games/semicongine: semiconginev2/audio/stb

annotate semiconginev2/audio/stb_vorbis.c @ 1225:27cd1c21290e compiletime-tests

did: refactor resources

author	sam <sam@basx.dev>
date	Wed, 17 Jul 2024 22:20:59 +0700
parents	semiconginev2/old/resources/stb_vorbis.c@56781cc0fc7c
children

rev	line source
840 44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1 // Ogg Vorbis audio decoder - v1.22 - public domain
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2 // http://nothings.org/stb_vorbis/
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4 // Original version written by Sean Barrett in 2007.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	6 // Originally sponsored by RAD Game Tools. Seeking implementation
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	7 // sponsored by Phillip Bennefall, Marc Andersen, Aaron Baker,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	8 // Elias Software, Aras Pranckevicius, and Sean Barrett.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	9 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	10 // LICENSE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	11 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	12 // See end of file for license information.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	13 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	14 // Limitations:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	15 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	16 // - floor 0 not supported (used in old ogg vorbis files pre-2004)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	17 // - lossless sample-truncation at beginning ignored
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	18 // - cannot concatenate multiple vorbis streams
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	19 // - sample positions are 32-bit, limiting seekable 192Khz
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	20 // files to around 6 hours (Ogg supports 64-bit)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	21 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	22 // Feature contributors:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	23 // Dougall Johnson (sample-exact seeking)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	24 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	25 // Bugfix/warning contributors:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	26 // Terje Mathisen Niklas Frykholm Andy Hill
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	27 // Casey Muratori John Bolton Gargaj
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	28 // Laurent Gomila Marc LeBlanc Ronny Chevalier
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	29 // Bernhard Wodo Evan Balster github:alxprd
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	30 // Tom Beaumont Ingo Leitgeb Nicolas Guillemot
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	31 // Phillip Bennefall Rohit Thiago Goulart
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	32 // github:manxorist Saga Musix github:infatum
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	33 // Timur Gagiev Maxwell Koo Peter Waller
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	34 // github:audinowho Dougall Johnson David Reid
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	35 // github:Clownacy Pedro J. Estebanez Remi Verschelde
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	36 // AnthoFoxo github:morlat Gabriel Ravier
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	37 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	38 // Partial history:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	39 // 1.22 - 2021-07-11 - various small fixes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	40 // 1.21 - 2021-07-02 - fix bug for files with no comments
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	41 // 1.20 - 2020-07-11 - several small fixes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	42 // 1.19 - 2020-02-05 - warnings
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	43 // 1.18 - 2020-02-02 - fix seek bugs; parse header comments; misc warnings etc.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	44 // 1.17 - 2019-07-08 - fix CVE-2019-13217..CVE-2019-13223 (by ForAllSecure)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	45 // 1.16 - 2019-03-04 - fix warnings
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	46 // 1.15 - 2019-02-07 - explicit failure if Ogg Skeleton data is found
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	47 // 1.14 - 2018-02-11 - delete bogus dealloca usage
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	48 // 1.13 - 2018-01-29 - fix truncation of last frame (hopefully)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	49 // 1.12 - 2017-11-21 - limit residue begin/end to blocksize/2 to avoid large temp allocs in bad/corrupt files
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	50 // 1.11 - 2017-07-23 - fix MinGW compilation
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	51 // 1.10 - 2017-03-03 - more robust seeking; fix negative ilog(); clear error in open_memory
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	52 // 1.09 - 2016-04-04 - back out 'truncation of last frame' fix from previous version
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	53 // 1.08 - 2016-04-02 - warnings; setup memory leaks; truncation of last frame
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	54 // 1.07 - 2015-01-16 - fixes for crashes on invalid files; warning fixes; const
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	55 // 1.06 - 2015-08-31 - full, correct support for seeking API (Dougall Johnson)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	56 // some crash fixes when out of memory or with corrupt files
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	57 // fix some inappropriately signed shifts
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	58 // 1.05 - 2015-04-19 - don't define __forceinline if it's redundant
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	59 // 1.04 - 2014-08-27 - fix missing const-correct case in API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	60 // 1.03 - 2014-08-07 - warning fixes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	61 // 1.02 - 2014-07-09 - declare qsort comparison as explicitly _cdecl in Windows
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	62 // 1.01 - 2014-06-18 - fix stb_vorbis_get_samples_float (interleaved was correct)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	63 // 1.0 - 2014-05-26 - fix memory leaks; fix warnings; fix bugs in >2-channel;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	64 // (API change) report sample rate for decode-full-file funcs
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	65 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	66 // See end of file for full version history.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	67
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	68
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	69 //////////////////////////////////////////////////////////////////////////////
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	70 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	71 // HEADER BEGINS HERE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	72 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	73
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	74 #ifndef STB_VORBIS_INCLUDE_STB_VORBIS_H
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	75 #define STB_VORBIS_INCLUDE_STB_VORBIS_H
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	76
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	77 #if defined(STB_VORBIS_NO_CRT) && !defined(STB_VORBIS_NO_STDIO)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	78 #define STB_VORBIS_NO_STDIO 1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	79 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	80
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	81 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	82 #include <stdio.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	83 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	84
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	85 #ifdef __cplusplus
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	86 extern "C" {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	87 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	88
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	89 /////////// THREAD SAFETY
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	90
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	91 // Individual stb_vorbis* handles are not thread-safe; you cannot decode from
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	92 // them from multiple threads at the same time. However, you can have multiple
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	93 // stb_vorbis* handles and decode from them independently in multiple thrads.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	94
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	95
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	96 /////////// MEMORY ALLOCATION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	97
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	98 // normally stb_vorbis uses malloc() to allocate memory at startup,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	99 // and alloca() to allocate temporary memory during a frame on the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	100 // stack. (Memory consumption will depend on the amount of setup
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	101 // data in the file and how you set the compile flags for speed
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	102 // vs. size. In my test files the maximal-size usage is ~150KB.)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	103 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	104 // You can modify the wrapper functions in the source (setup_malloc,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	105 // setup_temp_malloc, temp_malloc) to change this behavior, or you
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	106 // can use a simpler allocation model: you pass in a buffer from
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	107 // which stb_vorbis will allocate _all_ its memory (including the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	108 // temp memory). "open" may fail with a VORBIS_outofmem if you
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	109 // do not pass in enough data; there is no way to determine how
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	110 // much you do need except to succeed (at which point you can
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	111 // query get_info to find the exact amount required. yes I know
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	112 // this is lame).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	113 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	114 // If you pass in a non-NULL buffer of the type below, allocation
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	115 // will occur from it as described above. Otherwise just pass NULL
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	116 // to use malloc()/alloca()
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	117
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	118 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	119 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	120 char *alloc_buffer;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	121 int alloc_buffer_length_in_bytes;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	122 } stb_vorbis_alloc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	123
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	124
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	125 /////////// FUNCTIONS USEABLE WITH ALL INPUT MODES
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	126
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	127 typedef struct stb_vorbis stb_vorbis;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	128
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	129 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	130 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	131 unsigned int sample_rate;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	132 int channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	133
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	134 unsigned int setup_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	135 unsigned int setup_temp_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	136 unsigned int temp_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	137
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	138 int max_frame_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	139 } stb_vorbis_info;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	140
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	141 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	142 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	143 char *vendor;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	144
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	145 int comment_list_length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	146 char **comment_list;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	147 } stb_vorbis_comment;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	148
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	149 // get general information about the file
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	150 extern stb_vorbis_info stb_vorbis_get_info(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	151
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	152 // get ogg comments
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	153 extern stb_vorbis_comment stb_vorbis_get_comment(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	154
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	155 // get the last error detected (clears it, too)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	156 extern int stb_vorbis_get_error(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	157
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	158 // close an ogg vorbis file and free all memory in use
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	159 extern void stb_vorbis_close(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	160
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	161 // this function returns the offset (in samples) from the beginning of the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	162 // file that will be returned by the next decode, if it is known, or -1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	163 // otherwise. after a flush_pushdata() call, this may take a while before
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	164 // it becomes valid again.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	165 // NOT WORKING YET after a seek with PULLDATA API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	166 extern int stb_vorbis_get_sample_offset(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	167
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	168 // returns the current seek point within the file, or offset from the beginning
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	169 // of the memory buffer. In pushdata mode it returns 0.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	170 extern unsigned int stb_vorbis_get_file_offset(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	171
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	172 /////////// PUSHDATA API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	173
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	174 #ifndef STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	175
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	176 // this API allows you to get blocks of data from any source and hand
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	177 // them to stb_vorbis. you have to buffer them; stb_vorbis will tell
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	178 // you how much it used, and you have to give it the rest next time;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	179 // and stb_vorbis may not have enough data to work with and you will
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	180 // need to give it the same data again PLUS more. Note that the Vorbis
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	181 // specification does not bound the size of an individual frame.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	182
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	183 extern stb_vorbis *stb_vorbis_open_pushdata(
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	184 const unsigned char * datablock, int datablock_length_in_bytes,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	185 int *datablock_memory_consumed_in_bytes,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	186 int *error,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	187 const stb_vorbis_alloc *alloc_buffer);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	188 // create a vorbis decoder by passing in the initial data block containing
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	189 // the ogg&vorbis headers (you don't need to do parse them, just provide
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	190 // the first N bytes of the file--you're told if it's not enough, see below)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	191 // on success, returns an stb_vorbis *, does not set error, returns the amount of
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	192 // data parsed/consumed on this call in *datablock_memory_consumed_in_bytes;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	193 // on failure, returns NULL on error and sets error, does not change datablock_memory_consumed
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	194 // if returns NULL and *error is VORBIS_need_more_data, then the input block was
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	195 // incomplete and you need to pass in a larger block from the start of the file
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	196
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	197 extern int stb_vorbis_decode_frame_pushdata(
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	198 stb_vorbis *f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	199 const unsigned char *datablock, int datablock_length_in_bytes,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	200 int channels, // place to write number of float buffers
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	201 float *output, // place to write float array of float * buffers
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	202 int *samples // place to write number of output samples
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	203 );
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	204 // decode a frame of audio sample data if possible from the passed-in data block
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	205 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	206 // return value: number of bytes we used from datablock
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	207 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	208 // possible cases:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	209 // 0 bytes used, 0 samples output (need more data)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	210 // N bytes used, 0 samples output (resynching the stream, keep going)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	211 // N bytes used, M samples output (one frame of data)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	212 // note that after opening a file, you will ALWAYS get one N-bytes,0-sample
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	213 // frame, because Vorbis always "discards" the first frame.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	214 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	215 // Note that on resynch, stb_vorbis will rarely consume all of the buffer,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	216 // instead only datablock_length_in_bytes-3 or less. This is because it wants
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	217 // to avoid missing parts of a page header if they cross a datablock boundary,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	218 // without writing state-machiney code to record a partial detection.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	219 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	220 // The number of channels returned are stored in *channels (which can be
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	221 // NULL--it is always the same as the number of channels reported by
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	222 // get_info). output will contain an array of float buffers, one per
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	223 // channel. In other words, (*output)[0][0] contains the first sample from
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	224 // the first channel, and (*output)[1][0] contains the first sample from
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	225 // the second channel.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	226 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	227 // *output points into stb_vorbis's internal output buffer storage; these
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	228 // buffers are owned by stb_vorbis and application code should not free
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	229 // them or modify their contents. They are transient and will be overwritten
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	230 // once you ask for more data to get decoded, so be sure to grab any data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	231 // you need before then.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	232
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	233 extern void stb_vorbis_flush_pushdata(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	234 // inform stb_vorbis that your next datablock will not be contiguous with
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	235 // previous ones (e.g. you've seeked in the data); future attempts to decode
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	236 // frames will cause stb_vorbis to resynchronize (as noted above), and
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	237 // once it sees a valid Ogg page (typically 4-8KB, as large as 64KB), it
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	238 // will begin decoding the _next_ frame.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	239 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	240 // if you want to seek using pushdata, you need to seek in your file, then
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	241 // call stb_vorbis_flush_pushdata(), then start calling decoding, then once
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	242 // decoding is returning you data, call stb_vorbis_get_sample_offset, and
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	243 // if you don't like the result, seek your file again and repeat.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	244 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	245
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	246
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	247 ////////// PULLING INPUT API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	248
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	249 #ifndef STB_VORBIS_NO_PULLDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	250 // This API assumes stb_vorbis is allowed to pull data from a source--
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	251 // either a block of memory containing the _entire_ vorbis stream, or a
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	252 // FILE * that you or it create, or possibly some other reading mechanism
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	253 // if you go modify the source to replace the FILE * case with some kind
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	254 // of callback to your code. (But if you don't support seeking, you may
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	255 // just want to go ahead and use pushdata.)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	256
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	257 #if !defined(STB_VORBIS_NO_STDIO) && !defined(STB_VORBIS_NO_INTEGER_CONVERSION)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	258 extern int stb_vorbis_decode_filename(const char filename, int channels, int sample_rate, short *output);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	259 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	260 #if !defined(STB_VORBIS_NO_INTEGER_CONVERSION)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	261 extern int stb_vorbis_decode_memory(const unsigned char mem, int len, int channels, int sample_rate, short *output);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	262 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	263 // decode an entire file and output the data interleaved into a malloc()ed
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	264 // buffer stored in *output. The return value is the number of samples
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	265 // decoded, or -1 if the file could not be opened or was not an ogg vorbis file.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	266 // When you're done with it, just free() the pointer returned in *output.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	267
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	268 extern stb_vorbis * stb_vorbis_open_memory(const unsigned char *data, int len,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	269 int error, const stb_vorbis_alloc alloc_buffer);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	270 // create an ogg vorbis decoder from an ogg vorbis stream in memory (note
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	271 // this must be the entire stream!). on failure, returns NULL and sets *error
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	272
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	273 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	274 extern stb_vorbis * stb_vorbis_open_filename(const char *filename,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	275 int error, const stb_vorbis_alloc alloc_buffer);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	276 // create an ogg vorbis decoder from a filename via fopen(). on failure,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	277 // returns NULL and sets *error (possibly to VORBIS_file_open_failure).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	278
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	279 extern stb_vorbis * stb_vorbis_open_file(FILE *f, int close_handle_on_close,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	280 int error, const stb_vorbis_alloc alloc_buffer);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	281 // create an ogg vorbis decoder from an open FILE *, looking for a stream at
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	282 // the _current_ seek point (ftell). on failure, returns NULL and sets *error.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	283 // note that stb_vorbis must "own" this stream; if you seek it in between
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	284 // calls to stb_vorbis, it will become confused. Moreover, if you attempt to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	285 // perform stb_vorbis_seek_*() operations on this file, it will assume it
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	286 // owns the _entire_ rest of the file after the start point. Use the next
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	287 // function, stb_vorbis_open_file_section(), to limit it.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	288
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	289 extern stb_vorbis * stb_vorbis_open_file_section(FILE *f, int close_handle_on_close,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	290 int error, const stb_vorbis_alloc alloc_buffer, unsigned int len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	291 // create an ogg vorbis decoder from an open FILE *, looking for a stream at
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	292 // the _current_ seek point (ftell); the stream will be of length 'len' bytes.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	293 // on failure, returns NULL and sets *error. note that stb_vorbis must "own"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	294 // this stream; if you seek it in between calls to stb_vorbis, it will become
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	295 // confused.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	296 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	297
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	298 extern int stb_vorbis_seek_frame(stb_vorbis *f, unsigned int sample_number);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	299 extern int stb_vorbis_seek(stb_vorbis *f, unsigned int sample_number);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	300 // these functions seek in the Vorbis file to (approximately) 'sample_number'.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	301 // after calling seek_frame(), the next call to get_frame_*() will include
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	302 // the specified sample. after calling stb_vorbis_seek(), the next call to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	303 // stb_vorbis_get_samples_* will start with the specified sample. If you
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	304 // do not need to seek to EXACTLY the target sample when using get_samples_*,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	305 // you can also use seek_frame().
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	306
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	307 extern int stb_vorbis_seek_start(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	308 // this function is equivalent to stb_vorbis_seek(f,0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	309
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	310 extern unsigned int stb_vorbis_stream_length_in_samples(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	311 extern float stb_vorbis_stream_length_in_seconds(stb_vorbis *f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	312 // these functions return the total length of the vorbis stream
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	313
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	314 extern int stb_vorbis_get_frame_float(stb_vorbis f, int channels, float ***output);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	315 // decode the next frame and return the number of samples. the number of
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	316 // channels returned are stored in *channels (which can be NULL--it is always
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	317 // the same as the number of channels reported by get_info). *output will
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	318 // contain an array of float* buffers, one per channel. These outputs will
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	319 // be overwritten on the next call to stb_vorbis_get_frame_*.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	320 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	321 // You generally should not intermix calls to stb_vorbis_get_frame_*()
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	322 // and stb_vorbis_get_samples_*(), since the latter calls the former.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	323
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	324 #ifndef STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	325 extern int stb_vorbis_get_frame_short_interleaved(stb_vorbis f, int num_c, short buffer, int num_shorts);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	326 extern int stb_vorbis_get_frame_short (stb_vorbis f, int num_c, short *buffer, int num_samples);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	327 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	328 // decode the next frame and return the number of samples per channel.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	329 // Note that for interleaved data, you pass in the number of shorts (the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	330 // size of your array), but the return value is the number of samples per
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	331 // channel, not the total number of samples.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	332 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	333 // The data is coerced to the number of channels you request according to the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	334 // channel coercion rules (see below). You must pass in the size of your
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	335 // buffer(s) so that stb_vorbis will not overwrite the end of the buffer.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	336 // The maximum buffer size needed can be gotten from get_info(); however,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	337 // the Vorbis I specification implies an absolute maximum of 4096 samples
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	338 // per channel.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	339
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	340 // Channel coercion rules:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	341 // Let M be the number of channels requested, and N the number of channels present,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	342 // and Cn be the nth channel; let stereo L be the sum of all L and center channels,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	343 // and stereo R be the sum of all R and center channels (channel assignment from the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	344 // vorbis spec).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	345 // M N output
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	346 // 1 k sum(Ck) for all k
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	347 // 2 * stereo L, stereo R
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	348 // k l k > l, the first l channels, then 0s
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	349 // k l k <= l, the first k channels
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	350 // Note that this is not _good_ surround etc. mixing at all! It's just so
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	351 // you get something useful.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	352
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	353 extern int stb_vorbis_get_samples_float_interleaved(stb_vorbis f, int channels, float buffer, int num_floats);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	354 extern int stb_vorbis_get_samples_float(stb_vorbis f, int channels, float *buffer, int num_samples);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	355 // gets num_samples samples, not necessarily on a frame boundary--this requires
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	356 // buffering so you have to supply the buffers. DOES NOT APPLY THE COERCION RULES.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	357 // Returns the number of samples stored per channel; it may be less than requested
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	358 // at the end of the file. If there are no more samples in the file, returns 0.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	359
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	360 #ifndef STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	361 extern int stb_vorbis_get_samples_short_interleaved(stb_vorbis f, int channels, short buffer, int num_shorts);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	362 extern int stb_vorbis_get_samples_short(stb_vorbis f, int channels, short *buffer, int num_samples);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	363 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	364 // gets num_samples samples, not necessarily on a frame boundary--this requires
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	365 // buffering so you have to supply the buffers. Applies the coercion rules above
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	366 // to produce 'channels' channels. Returns the number of samples stored per channel;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	367 // it may be less than requested at the end of the file. If there are no more
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	368 // samples in the file, returns 0.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	369
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	370 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	371
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	372 //////// ERROR CODES
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	373
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	374 enum STBVorbisError
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	375 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	376 VORBIS__no_error,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	377
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	378 VORBIS_need_more_data=1, // not a real error
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	379
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	380 VORBIS_invalid_api_mixing, // can't mix API modes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	381 VORBIS_outofmem, // not enough memory
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	382 VORBIS_feature_not_supported, // uses floor 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	383 VORBIS_too_many_channels, // STB_VORBIS_MAX_CHANNELS is too small
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	384 VORBIS_file_open_failure, // fopen() failed
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	385 VORBIS_seek_without_length, // can't seek in unknown-length file
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	386
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	387 VORBIS_unexpected_eof=10, // file is truncated?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	388 VORBIS_seek_invalid, // seek past EOF
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	389
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	390 // decoding errors (corrupt/invalid stream) -- you probably
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	391 // don't care about the exact details of these
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	392
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	393 // vorbis errors:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	394 VORBIS_invalid_setup=20,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	395 VORBIS_invalid_stream,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	396
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	397 // ogg errors:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	398 VORBIS_missing_capture_pattern=30,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	399 VORBIS_invalid_stream_structure_version,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	400 VORBIS_continued_packet_flag_invalid,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	401 VORBIS_incorrect_stream_serial_number,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	402 VORBIS_invalid_first_page,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	403 VORBIS_bad_packet_type,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	404 VORBIS_cant_find_last_page,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	405 VORBIS_seek_failed,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	406 VORBIS_ogg_skeleton_not_supported
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	407 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	408
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	409
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	410 #ifdef __cplusplus
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	411 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	412 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	413
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	414 #endif // STB_VORBIS_INCLUDE_STB_VORBIS_H
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	415 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	416 // HEADER ENDS HERE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	417 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	418 //////////////////////////////////////////////////////////////////////////////
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	419
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	420 #ifndef STB_VORBIS_HEADER_ONLY
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	421
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	422 // global configuration settings (e.g. set these in the project/makefile),
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	423 // or just set them in this file at the top (although ideally the first few
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	424 // should be visible when the header file is compiled too, although it's not
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	425 // crucial)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	426
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	427 // STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	428 // does not compile the code for the various stb_vorbis_*_pushdata()
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	429 // functions
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	430 // #define STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	431
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	432 // STB_VORBIS_NO_PULLDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	433 // does not compile the code for the non-pushdata APIs
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	434 // #define STB_VORBIS_NO_PULLDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	435
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	436 // STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	437 // does not compile the code for the APIs that use FILE *s internally
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	438 // or externally (implied by STB_VORBIS_NO_PULLDATA_API)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	439 // #define STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	440
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	441 // STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	442 // does not compile the code for converting audio sample data from
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	443 // float to integer (implied by STB_VORBIS_NO_PULLDATA_API)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	444 // #define STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	445
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	446 // STB_VORBIS_NO_FAST_SCALED_FLOAT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	447 // does not use a fast float-to-int trick to accelerate float-to-int on
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	448 // most platforms which requires endianness be defined correctly.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	449 //#define STB_VORBIS_NO_FAST_SCALED_FLOAT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	450
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	451
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	452 // STB_VORBIS_MAX_CHANNELS [number]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	453 // globally define this to the maximum number of channels you need.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	454 // The spec does not put a restriction on channels except that
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	455 // the count is stored in a byte, so 255 is the hard limit.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	456 // Reducing this saves about 16 bytes per value, so using 16 saves
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	457 // (255-16)*16 or around 4KB. Plus anything other memory usage
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	458 // I forgot to account for. Can probably go as low as 8 (7.1 audio),
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	459 // 6 (5.1 audio), or 2 (stereo only).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	460 #ifndef STB_VORBIS_MAX_CHANNELS
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	461 #define STB_VORBIS_MAX_CHANNELS 16 // enough for anyone?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	462 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	463
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	464 // STB_VORBIS_PUSHDATA_CRC_COUNT [number]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	465 // after a flush_pushdata(), stb_vorbis begins scanning for the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	466 // next valid page, without backtracking. when it finds something
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	467 // that looks like a page, it streams through it and verifies its
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	468 // CRC32. Should that validation fail, it keeps scanning. But it's
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	469 // possible that _while_ streaming through to check the CRC32 of
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	470 // one candidate page, it sees another candidate page. This #define
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	471 // determines how many "overlapping" candidate pages it can search
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	472 // at once. Note that "real" pages are typically ~4KB to ~8KB, whereas
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	473 // garbage pages could be as big as 64KB, but probably average ~16KB.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	474 // So don't hose ourselves by scanning an apparent 64KB page and
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	475 // missing a ton of real ones in the interim; so minimum of 2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	476 #ifndef STB_VORBIS_PUSHDATA_CRC_COUNT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	477 #define STB_VORBIS_PUSHDATA_CRC_COUNT 4
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	478 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	479
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	480 // STB_VORBIS_FAST_HUFFMAN_LENGTH [number]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	481 // sets the log size of the huffman-acceleration table. Maximum
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	482 // supported value is 24. with larger numbers, more decodings are O(1),
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	483 // but the table size is larger so worse cache missing, so you'll have
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	484 // to probe (and try multiple ogg vorbis files) to find the sweet spot.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	485 #ifndef STB_VORBIS_FAST_HUFFMAN_LENGTH
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	486 #define STB_VORBIS_FAST_HUFFMAN_LENGTH 10
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	487 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	488
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	489 // STB_VORBIS_FAST_BINARY_LENGTH [number]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	490 // sets the log size of the binary-search acceleration table. this
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	491 // is used in similar fashion to the fast-huffman size to set initial
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	492 // parameters for the binary search
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	493
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	494 // STB_VORBIS_FAST_HUFFMAN_INT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	495 // The fast huffman tables are much more efficient if they can be
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	496 // stored as 16-bit results instead of 32-bit results. This restricts
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	497 // the codebooks to having only 65535 possible outcomes, though.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	498 // (At least, accelerated by the huffman table.)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	499 #ifndef STB_VORBIS_FAST_HUFFMAN_INT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	500 #define STB_VORBIS_FAST_HUFFMAN_SHORT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	501 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	502
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	503 // STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	504 // If the 'fast huffman' search doesn't succeed, then stb_vorbis falls
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	505 // back on binary searching for the correct one. This requires storing
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	506 // extra tables with the huffman codes in sorted order. Defining this
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	507 // symbol trades off space for speed by forcing a linear search in the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	508 // non-fast case, except for "sparse" codebooks.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	509 // #define STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	510
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	511 // STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	512 // stb_vorbis precomputes the result of the scalar residue decoding
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	513 // that would otherwise require a divide per chunk. you can trade off
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	514 // space for time by defining this symbol.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	515 // #define STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	516
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	517 // STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	518 // vorbis VQ codebooks can be encoded two ways: with every case explicitly
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	519 // stored, or with all elements being chosen from a small range of values,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	520 // and all values possible in all elements. By default, stb_vorbis expands
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	521 // this latter kind out to look like the former kind for ease of decoding,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	522 // because otherwise an integer divide-per-vector-element is required to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	523 // unpack the index. If you define STB_VORBIS_DIVIDES_IN_CODEBOOK, you can
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	524 // trade off storage for speed.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	525 //#define STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	526
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	527 #ifdef STB_VORBIS_CODEBOOK_SHORTS
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	528 #error "STB_VORBIS_CODEBOOK_SHORTS is no longer supported as it produced incorrect results for some input formats"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	529 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	530
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	531 // STB_VORBIS_DIVIDE_TABLE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	532 // this replaces small integer divides in the floor decode loop with
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	533 // table lookups. made less than 1% difference, so disabled by default.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	534
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	535 // STB_VORBIS_NO_INLINE_DECODE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	536 // disables the inlining of the scalar codebook fast-huffman decode.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	537 // might save a little codespace; useful for debugging
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	538 // #define STB_VORBIS_NO_INLINE_DECODE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	539
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	540 // STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	541 // Normally we only decode the floor without synthesizing the actual
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	542 // full curve. We can instead synthesize the curve immediately. This
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	543 // requires more memory and is very likely slower, so I don't think
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	544 // you'd ever want to do it except for debugging.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	545 // #define STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	546
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	547
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	548
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	549
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	550 //////////////////////////////////////////////////////////////////////////////
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	551
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	552 #ifdef STB_VORBIS_NO_PULLDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	553 #define STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	554 #define STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	555 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	556
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	557 #if defined(STB_VORBIS_NO_CRT) && !defined(STB_VORBIS_NO_STDIO)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	558 #define STB_VORBIS_NO_STDIO 1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	559 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	560
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	561 #ifndef STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	562 #ifndef STB_VORBIS_NO_FAST_SCALED_FLOAT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	563
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	564 // only need endianness for fast-float-to-int, which we don't
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	565 // use for pushdata
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	566
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	567 #ifndef STB_VORBIS_BIG_ENDIAN
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	568 #define STB_VORBIS_ENDIAN 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	569 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	570 #define STB_VORBIS_ENDIAN 1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	571 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	572
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	573 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	574 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	575
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	576
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	577 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	578 #include <stdio.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	579 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	580
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	581 #ifndef STB_VORBIS_NO_CRT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	582 #include <stdlib.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	583 #include <string.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	584 #include <assert.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	585 #include <math.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	586
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	587 // find definition of alloca if it's not in stdlib.h:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	588 #if defined(_MSC_VER) \|\| defined(__MINGW32__)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	589 #include <malloc.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	590 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	591 #if defined(__linux__) \|\| defined(__linux) \|\| defined(__sun__) \|\| defined(__EMSCRIPTEN__) \|\| defined(__NEWLIB__)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	592 #include <alloca.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	593 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	594 #else // STB_VORBIS_NO_CRT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	595 #define NULL 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	596 #define malloc(s) 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	597 #define free(s) ((void) 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	598 #define realloc(s) 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	599 #endif // STB_VORBIS_NO_CRT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	600
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	601 #include <limits.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	602
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	603 #ifdef __MINGW32__
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	604 // eff you mingw:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	605 // "fixed":
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	606 // http://sourceforge.net/p/mingw-w64/mailman/message/32882927/
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	607 // "no that broke the build, reverted, who cares about C":
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	608 // http://sourceforge.net/p/mingw-w64/mailman/message/32890381/
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	609 #ifdef __forceinline
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	610 #undef __forceinline
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	611 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	612 #define __forceinline
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	613 #ifndef alloca
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	614 #define alloca __builtin_alloca
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	615 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	616 #elif !defined(_MSC_VER)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	617 #if __GNUC__
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	618 #define __forceinline inline
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	619 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	620 #define __forceinline
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	621 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	622 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	623
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	624 #if STB_VORBIS_MAX_CHANNELS > 256
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	625 #error "Value of STB_VORBIS_MAX_CHANNELS outside of allowed range"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	626 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	627
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	628 #if STB_VORBIS_FAST_HUFFMAN_LENGTH > 24
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	629 #error "Value of STB_VORBIS_FAST_HUFFMAN_LENGTH outside of allowed range"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	630 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	631
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	632
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	633 #if 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	634 #include <crtdbg.h>
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	635 #define CHECK(f) _CrtIsValidHeapPointer(f->channel_buffers[1])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	636 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	637 #define CHECK(f) ((void) 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	638 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	639
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	640 #define MAX_BLOCKSIZE_LOG 13 // from specification
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	641 #define MAX_BLOCKSIZE (1 << MAX_BLOCKSIZE_LOG)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	642
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	643
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	644 typedef unsigned char uint8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	645 typedef signed char int8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	646 typedef unsigned short uint16;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	647 typedef signed short int16;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	648 typedef unsigned int uint32;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	649 typedef signed int int32;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	650
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	651 #ifndef TRUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	652 #define TRUE 1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	653 #define FALSE 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	654 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	655
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	656 typedef float codetype;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	657
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	658 #ifdef _MSC_VER
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	659 #define STBV_NOTUSED(v) (void)(v)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	660 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	661 #define STBV_NOTUSED(v) (void)sizeof(v)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	662 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	663
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	664 // @NOTE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	665 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	666 // Some arrays below are tagged "//varies", which means it's actually
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	667 // a variable-sized piece of data, but rather than malloc I assume it's
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	668 // small enough it's better to just allocate it all together with the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	669 // main thing
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	670 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	671 // Most of the variables are specified with the smallest size I could pack
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	672 // them into. It might give better performance to make them all full-sized
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	673 // integers. It should be safe to freely rearrange the structures or change
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	674 // the sizes larger--nothing relies on silently truncating etc., nor the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	675 // order of variables.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	676
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	677 #define FAST_HUFFMAN_TABLE_SIZE (1 << STB_VORBIS_FAST_HUFFMAN_LENGTH)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	678 #define FAST_HUFFMAN_TABLE_MASK (FAST_HUFFMAN_TABLE_SIZE - 1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	679
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	680 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	681 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	682 int dimensions, entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	683 uint8 *codeword_lengths;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	684 float minimum_value;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	685 float delta_value;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	686 uint8 value_bits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	687 uint8 lookup_type;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	688 uint8 sequence_p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	689 uint8 sparse;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	690 uint32 lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	691 codetype *multiplicands;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	692 uint32 *codewords;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	693 #ifdef STB_VORBIS_FAST_HUFFMAN_SHORT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	694 int16 fast_huffman[FAST_HUFFMAN_TABLE_SIZE];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	695 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	696 int32 fast_huffman[FAST_HUFFMAN_TABLE_SIZE];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	697 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	698 uint32 *sorted_codewords;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	699 int *sorted_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	700 int sorted_entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	701 } Codebook;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	702
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	703 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	704 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	705 uint8 order;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	706 uint16 rate;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	707 uint16 bark_map_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	708 uint8 amplitude_bits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	709 uint8 amplitude_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	710 uint8 number_of_books;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	711 uint8 book_list[16]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	712 } Floor0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	713
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	714 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	715 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	716 uint8 partitions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	717 uint8 partition_class_list[32]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	718 uint8 class_dimensions[16]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	719 uint8 class_subclasses[16]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	720 uint8 class_masterbooks[16]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	721 int16 subclass_books[16][8]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	722 uint16 Xlist[31*8+2]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	723 uint8 sorted_order[31*8+2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	724 uint8 neighbors[31*8+2][2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	725 uint8 floor1_multiplier;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	726 uint8 rangebits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	727 int values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	728 } Floor1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	729
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	730 typedef union
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	731 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	732 Floor0 floor0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	733 Floor1 floor1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	734 } Floor;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	735
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	736 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	737 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	738 uint32 begin, end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	739 uint32 part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	740 uint8 classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	741 uint8 classbook;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	742 uint8 **classdata;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	743 int16 (*residue_books)[8];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	744 } Residue;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	745
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	746 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	747 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	748 uint8 magnitude;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	749 uint8 angle;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	750 uint8 mux;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	751 } MappingChannel;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	752
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	753 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	754 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	755 uint16 coupling_steps;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	756 MappingChannel *chan;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	757 uint8 submaps;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	758 uint8 submap_floor[15]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	759 uint8 submap_residue[15]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	760 } Mapping;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	761
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	762 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	763 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	764 uint8 blockflag;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	765 uint8 mapping;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	766 uint16 windowtype;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	767 uint16 transformtype;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	768 } Mode;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	769
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	770 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	771 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	772 uint32 goal_crc; // expected crc if match
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	773 int bytes_left; // bytes left in packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	774 uint32 crc_so_far; // running crc
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	775 int bytes_done; // bytes processed in _current_ chunk
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	776 uint32 sample_loc; // granule pos encoded in page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	777 } CRCscan;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	778
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	779 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	780 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	781 uint32 page_start, page_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	782 uint32 last_decoded_sample;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	783 } ProbedPage;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	784
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	785 struct stb_vorbis
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	786 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	787 // user-accessible info
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	788 unsigned int sample_rate;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	789 int channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	790
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	791 unsigned int setup_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	792 unsigned int temp_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	793 unsigned int setup_temp_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	794
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	795 char *vendor;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	796 int comment_list_length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	797 char **comment_list;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	798
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	799 // input config
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	800 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	801 FILE *f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	802 uint32 f_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	803 int close_on_free;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	804 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	805
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	806 uint8 *stream;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	807 uint8 *stream_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	808 uint8 *stream_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	809
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	810 uint32 stream_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	811
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	812 uint8 push_mode;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	813
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	814 // the page to seek to when seeking to start, may be zero
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	815 uint32 first_audio_page_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	816
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	817 // p_first is the page on which the first audio packet ends
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	818 // (but not necessarily the page on which it starts)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	819 ProbedPage p_first, p_last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	820
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	821 // memory management
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	822 stb_vorbis_alloc alloc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	823 int setup_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	824 int temp_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	825
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	826 // run-time results
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	827 int eof;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	828 enum STBVorbisError error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	829
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	830 // user-useful data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	831
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	832 // header info
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	833 int blocksize[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	834 int blocksize_0, blocksize_1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	835 int codebook_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	836 Codebook *codebooks;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	837 int floor_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	838 uint16 floor_types[64]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	839 Floor *floor_config;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	840 int residue_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	841 uint16 residue_types[64]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	842 Residue *residue_config;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	843 int mapping_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	844 Mapping *mapping;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	845 int mode_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	846 Mode mode_config[64]; // varies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	847
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	848 uint32 total_samples;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	849
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	850 // decode buffer
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	851 float *channel_buffers[STB_VORBIS_MAX_CHANNELS];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	852 float *outputs [STB_VORBIS_MAX_CHANNELS];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	853
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	854 float *previous_window[STB_VORBIS_MAX_CHANNELS];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	855 int previous_length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	856
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	857 #ifndef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	858 int16 *finalY[STB_VORBIS_MAX_CHANNELS];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	859 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	860 float *floor_buffers[STB_VORBIS_MAX_CHANNELS];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	861 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	862
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	863 uint32 current_loc; // sample location of next frame to decode
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	864 int current_loc_valid;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	865
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	866 // per-blocksize precomputed data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	867
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	868 // twiddle factors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	869 float A[2],B[2],*C[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	870 float *window[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	871 uint16 *bit_reverse[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	872
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	873 // current page/packet/segment streaming info
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	874 uint32 serial; // stream serial number for verification
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	875 int last_page;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	876 int segment_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	877 uint8 segments[255];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	878 uint8 page_flag;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	879 uint8 bytes_in_seg;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	880 uint8 first_decode;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	881 int next_seg;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	882 int last_seg; // flag that we're on the last segment
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	883 int last_seg_which; // what was the segment number of the last seg?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	884 uint32 acc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	885 int valid_bits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	886 int packet_bytes;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	887 int end_seg_with_known_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	888 uint32 known_loc_for_packet;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	889 int discard_samples_deferred;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	890 uint32 samples_output;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	891
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	892 // push mode scanning
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	893 int page_crc_tests; // only in push_mode: number of tests active; -1 if not searching
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	894 #ifndef STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	895 CRCscan scan[STB_VORBIS_PUSHDATA_CRC_COUNT];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	896 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	897
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	898 // sample-access
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	899 int channel_buffer_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	900 int channel_buffer_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	901 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	902
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	903 #if defined(STB_VORBIS_NO_PUSHDATA_API)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	904 #define IS_PUSH_MODE(f) FALSE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	905 #elif defined(STB_VORBIS_NO_PULLDATA_API)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	906 #define IS_PUSH_MODE(f) TRUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	907 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	908 #define IS_PUSH_MODE(f) ((f)->push_mode)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	909 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	910
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	911 typedef struct stb_vorbis vorb;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	912
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	913 static int error(vorb *f, enum STBVorbisError e)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	914 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	915 f->error = e;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	916 if (!f->eof && e != VORBIS_need_more_data) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	917 f->error=e; // breakpoint for debugging
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	918 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	919 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	920 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	921
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	922
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	923 // these functions are used for allocating temporary memory
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	924 // while decoding. if you can afford the stack space, use
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	925 // alloca(); otherwise, provide a temp buffer and it will
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	926 // allocate out of those.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	927
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	928 #define array_size_required(count,size) (count(sizeof(void )+(size)))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	929
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	930 #define temp_alloc(f,size) (f->alloc.alloc_buffer ? setup_temp_malloc(f,size) : alloca(size))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	931 #define temp_free(f,p) (void)0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	932 #define temp_alloc_save(f) ((f)->temp_offset)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	933 #define temp_alloc_restore(f,p) ((f)->temp_offset = (p))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	934
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	935 #define temp_block_array(f,count,size) make_block_array(temp_alloc(f,array_size_required(count,size)), count, size)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	936
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	937 // given a sufficiently large block of memory, make an array of pointers to subblocks of it
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	938 static void make_block_array(void mem, int count, int size)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	939 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	940 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	941 void p = (void ) mem;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	942 char q = (char ) (p + count);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	943 for (i=0; i < count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	944 p[i] = q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	945 q += size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	946 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	947 return p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	948 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	949
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	950 static void setup_malloc(vorb f, int sz)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	951 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	952 sz = (sz+7) & ~7; // round up to nearest 8 for alignment of future allocs.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	953 f->setup_memory_required += sz;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	954 if (f->alloc.alloc_buffer) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	955 void p = (char ) f->alloc.alloc_buffer + f->setup_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	956 if (f->setup_offset + sz > f->temp_offset) return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	957 f->setup_offset += sz;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	958 return p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	959 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	960 return sz ? malloc(sz) : NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	961 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	962
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	963 static void setup_free(vorb f, void p)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	964 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	965 if (f->alloc.alloc_buffer) return; // do nothing; setup mem is a stack
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	966 free(p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	967 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	968
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	969 static void setup_temp_malloc(vorb f, int sz)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	970 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	971 sz = (sz+7) & ~7; // round up to nearest 8 for alignment of future allocs.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	972 if (f->alloc.alloc_buffer) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	973 if (f->temp_offset - sz < f->setup_offset) return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	974 f->temp_offset -= sz;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	975 return (char *) f->alloc.alloc_buffer + f->temp_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	976 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	977 return malloc(sz);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	978 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	979
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	980 static void setup_temp_free(vorb f, void p, int sz)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	981 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	982 if (f->alloc.alloc_buffer) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	983 f->temp_offset += (sz+7)&~7;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	984 return;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	985 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	986 free(p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	987 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	988
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	989 #define CRC32_POLY 0x04c11db7 // from spec
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	990
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	991 static uint32 crc_table[256];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	992 static void crc32_init(void)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	993 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	994 int i,j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	995 uint32 s;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	996 for(i=0; i < 256; i++) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	997 for (s=(uint32) i << 24, j=0; j < 8; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	998 s = (s << 1) ^ (s >= (1U<<31) ? CRC32_POLY : 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	999 crc_table[i] = s;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1000 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1001 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1002
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1003 static __forceinline uint32 crc32_update(uint32 crc, uint8 byte)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1004 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1005 return (crc << 8) ^ crc_table[byte ^ (crc >> 24)];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1006 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1007
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1008
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1009 // used in setup, and for huffman that doesn't go fast path
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1010 static unsigned int bit_reverse(unsigned int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1011 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1012 n = ((n & 0xAAAAAAAA) >> 1) \| ((n & 0x55555555) << 1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1013 n = ((n & 0xCCCCCCCC) >> 2) \| ((n & 0x33333333) << 2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1014 n = ((n & 0xF0F0F0F0) >> 4) \| ((n & 0x0F0F0F0F) << 4);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1015 n = ((n & 0xFF00FF00) >> 8) \| ((n & 0x00FF00FF) << 8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1016 return (n >> 16) \| (n << 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1017 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1018
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1019 static float square(float x)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1020 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1021 return x*x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1022 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1023
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1024 // this is a weird definition of log2() for which log2(1) = 1, log2(2) = 2, log2(4) = 3
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1025 // as required by the specification. fast(?) implementation from stb.h
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1026 // @OPTIMIZE: called multiple times per-packet with "constants"; move to setup
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1027 static int ilog(int32 n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1028 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1029 static signed char log2_4[16] = { 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1030
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1031 if (n < 0) return 0; // signed n returns 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1032
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1033 // 2 compares if n < 16, 3 compares otherwise (4 if signed or n > 1<<29)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1034 if (n < (1 << 14))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1035 if (n < (1 << 4)) return 0 + log2_4[n ];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1036 else if (n < (1 << 9)) return 5 + log2_4[n >> 5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1037 else return 10 + log2_4[n >> 10];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1038 else if (n < (1 << 24))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1039 if (n < (1 << 19)) return 15 + log2_4[n >> 15];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1040 else return 20 + log2_4[n >> 20];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1041 else if (n < (1 << 29)) return 25 + log2_4[n >> 25];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1042 else return 30 + log2_4[n >> 30];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1043 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1044
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1045 #ifndef M_PI
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1046 #define M_PI 3.14159265358979323846264f // from CRC
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1047 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1048
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1049 // code length assigned to a value with no huffman encoding
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1050 #define NO_CODE 255
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1051
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1052 /////////////////////// LEAF SETUP FUNCTIONS //////////////////////////
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1053 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1054 // these functions are only called at setup, and only a few times
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1055 // per file
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1056
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1057 static float float32_unpack(uint32 x)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1058 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1059 // from the specification
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1060 uint32 mantissa = x & 0x1fffff;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1061 uint32 sign = x & 0x80000000;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1062 uint32 exp = (x & 0x7fe00000) >> 21;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1063 double res = sign ? -(double)mantissa : (double)mantissa;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1064 return (float) ldexp((float)res, (int)exp-788);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1065 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1066
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1067
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1068 // zlib & jpeg huffman tables assume that the output symbols
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1069 // can either be arbitrarily arranged, or have monotonically
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1070 // increasing frequencies--they rely on the lengths being sorted;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1071 // this makes for a very simple generation algorithm.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1072 // vorbis allows a huffman table with non-sorted lengths. This
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1073 // requires a more sophisticated construction, since symbols in
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1074 // order do not map to huffman codes "in order".
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1075 static void add_entry(Codebook c, uint32 huff_code, int symbol, int count, int len, uint32 values)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1076 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1077 if (!c->sparse) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1078 c->codewords [symbol] = huff_code;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1079 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1080 c->codewords [count] = huff_code;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1081 c->codeword_lengths[count] = len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1082 values [count] = symbol;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1083 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1084 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1085
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1086 static int compute_codewords(Codebook c, uint8 len, int n, uint32 *values)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1087 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1088 int i,k,m=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1089 uint32 available[32];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1090
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1091 memset(available, 0, sizeof(available));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1092 // find the first entry
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1093 for (k=0; k < n; ++k) if (len[k] < NO_CODE) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1094 if (k == n) { assert(c->sorted_entries == 0); return TRUE; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1095 assert(len[k] < 32); // no error return required, code reading lens checks this
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1096 // add to the list
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1097 add_entry(c, 0, k, m++, len[k], values);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1098 // add all available leaves
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1099 for (i=1; i <= len[k]; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1100 available[i] = 1U << (32-i);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1101 // note that the above code treats the first case specially,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1102 // but it's really the same as the following code, so they
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1103 // could probably be combined (except the initial code is 0,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1104 // and I use 0 in available[] to mean 'empty')
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1105 for (i=k+1; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1106 uint32 res;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1107 int z = len[i], y;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1108 if (z == NO_CODE) continue;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1109 assert(z < 32); // no error return required, code reading lens checks this
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1110 // find lowest available leaf (should always be earliest,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1111 // which is what the specification calls for)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1112 // note that this property, and the fact we can never have
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1113 // more than one free leaf at a given level, isn't totally
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1114 // trivial to prove, but it seems true and the assert never
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1115 // fires, so!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1116 while (z > 0 && !available[z]) --z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1117 if (z == 0) { return FALSE; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1118 res = available[z];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1119 available[z] = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1120 add_entry(c, bit_reverse(res), i, m++, len[i], values);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1121 // propagate availability up the tree
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1122 if (z != len[i]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1123 for (y=len[i]; y > z; --y) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1124 assert(available[y] == 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1125 available[y] = res + (1 << (32-y));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1126 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1127 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1128 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1129 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1130 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1131
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1132 // accelerated huffman table allows fast O(1) match of all symbols
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1133 // of length <= STB_VORBIS_FAST_HUFFMAN_LENGTH
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1134 static void compute_accelerated_huffman(Codebook *c)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1135 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1136 int i, len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1137 for (i=0; i < FAST_HUFFMAN_TABLE_SIZE; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1138 c->fast_huffman[i] = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1139
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1140 len = c->sparse ? c->sorted_entries : c->entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1141 #ifdef STB_VORBIS_FAST_HUFFMAN_SHORT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1142 if (len > 32767) len = 32767; // largest possible value we can encode!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1143 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1144 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1145 if (c->codeword_lengths[i] <= STB_VORBIS_FAST_HUFFMAN_LENGTH) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1146 uint32 z = c->sparse ? bit_reverse(c->sorted_codewords[i]) : c->codewords[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1147 // set table entries for all bit combinations in the higher bits
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1148 while (z < FAST_HUFFMAN_TABLE_SIZE) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1149 c->fast_huffman[z] = i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1150 z += 1 << c->codeword_lengths[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1151 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1152 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1153 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1154 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1155
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1156 #ifdef _MSC_VER
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1157 #define STBV_CDECL __cdecl
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1158 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1159 #define STBV_CDECL
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1160 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1161
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1162 static int STBV_CDECL uint32_compare(const void p, const void q)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1163 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1164 uint32 x = * (uint32 *) p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1165 uint32 y = * (uint32 *) q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1166 return x < y ? -1 : x > y;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1167 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1168
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1169 static int include_in_sort(Codebook *c, uint8 len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1170 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1171 if (c->sparse) { assert(len != NO_CODE); return TRUE; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1172 if (len == NO_CODE) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1173 if (len > STB_VORBIS_FAST_HUFFMAN_LENGTH) return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1174 return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1175 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1176
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1177 // if the fast table above doesn't work, we want to binary
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1178 // search them... need to reverse the bits
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1179 static void compute_sorted_huffman(Codebook c, uint8 lengths, uint32 *values)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1180 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1181 int i, len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1182 // build a list of all the entries
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1183 // OPTIMIZATION: don't include the short ones, since they'll be caught by FAST_HUFFMAN.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1184 // this is kind of a frivolous optimization--I don't see any performance improvement,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1185 // but it's like 4 extra lines of code, so.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1186 if (!c->sparse) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1187 int k = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1188 for (i=0; i < c->entries; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1189 if (include_in_sort(c, lengths[i]))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1190 c->sorted_codewords[k++] = bit_reverse(c->codewords[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1191 assert(k == c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1192 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1193 for (i=0; i < c->sorted_entries; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1194 c->sorted_codewords[i] = bit_reverse(c->codewords[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1195 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1196
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1197 qsort(c->sorted_codewords, c->sorted_entries, sizeof(c->sorted_codewords[0]), uint32_compare);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1198 c->sorted_codewords[c->sorted_entries] = 0xffffffff;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1199
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1200 len = c->sparse ? c->sorted_entries : c->entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1201 // now we need to indicate how they correspond; we could either
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1202 // #1: sort a different data structure that says who they correspond to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1203 // #2: for each sorted entry, search the original list to find who corresponds
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1204 // #3: for each original entry, find the sorted entry
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1205 // #1 requires extra storage, #2 is slow, #3 can use binary search!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1206 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1207 int huff_len = c->sparse ? lengths[values[i]] : lengths[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1208 if (include_in_sort(c,huff_len)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1209 uint32 code = bit_reverse(c->codewords[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1210 int x=0, n=c->sorted_entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1211 while (n > 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1212 // invariant: sc[x] <= code < sc[x+n]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1213 int m = x + (n >> 1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1214 if (c->sorted_codewords[m] <= code) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1215 x = m;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1216 n -= (n>>1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1217 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1218 n >>= 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1219 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1220 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1221 assert(c->sorted_codewords[x] == code);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1222 if (c->sparse) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1223 c->sorted_values[x] = values[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1224 c->codeword_lengths[x] = huff_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1225 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1226 c->sorted_values[x] = i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1227 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1228 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1229 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1230 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1231
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1232 // only run while parsing the header (3 times)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1233 static int vorbis_validate(uint8 *data)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1234 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1235 static uint8 vorbis[6] = { 'v', 'o', 'r', 'b', 'i', 's' };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1236 return memcmp(data, vorbis, 6) == 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1237 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1238
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1239 // called from setup only, once per code book
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1240 // (formula implied by specification)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1241 static int lookup1_values(int entries, int dim)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1242 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1243 int r = (int) floor(exp((float) log((float) entries) / dim));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1244 if ((int) floor(pow((float) r+1, dim)) <= entries) // (int) cast for MinGW warning;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1245 ++r; // floor() to avoid _ftol() when non-CRT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1246 if (pow((float) r+1, dim) <= entries)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1247 return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1248 if ((int) floor(pow((float) r, dim)) > entries)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1249 return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1250 return r;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1251 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1252
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1253 // called twice per file
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1254 static void compute_twiddle_factors(int n, float A, float B, float *C)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1255 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1256 int n4 = n >> 2, n8 = n >> 3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1257 int k,k2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1258
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1259 for (k=k2=0; k < n4; ++k,k2+=2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1260 A[k2 ] = (float) cos(4kM_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1261 A[k2+1] = (float) -sin(4kM_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1262 B[k2 ] = (float) cos((k2+1)M_PI/n/2) 0.5f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1263 B[k2+1] = (float) sin((k2+1)M_PI/n/2) 0.5f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1264 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1265 for (k=k2=0; k < n8; ++k,k2+=2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1266 C[k2 ] = (float) cos(2(k2+1)M_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1267 C[k2+1] = (float) -sin(2(k2+1)M_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1268 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1269 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1270
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1271 static void compute_window(int n, float *window)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1272 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1273 int n2 = n >> 1, i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1274 for (i=0; i < n2; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1275 window[i] = (float) sin(0.5 * M_PI * square((float) sin((i - 0 + 0.5) / n2 * 0.5 * M_PI)));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1276 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1277
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1278 static void compute_bitreverse(int n, uint16 *rev)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1279 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1280 int ld = ilog(n) - 1; // ilog is off-by-one from normal definitions
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1281 int i, n8 = n >> 3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1282 for (i=0; i < n8; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1283 rev[i] = (bit_reverse(i) >> (32-ld+3)) << 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1284 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1285
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1286 static int init_blocksize(vorb *f, int b, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1287 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1288 int n2 = n >> 1, n4 = n >> 2, n8 = n >> 3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1289 f->A[b] = (float ) setup_malloc(f, sizeof(float) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1290 f->B[b] = (float ) setup_malloc(f, sizeof(float) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1291 f->C[b] = (float ) setup_malloc(f, sizeof(float) n4);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1292 if (!f->A[b] \|\| !f->B[b] \|\| !f->C[b]) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1293 compute_twiddle_factors(n, f->A[b], f->B[b], f->C[b]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1294 f->window[b] = (float ) setup_malloc(f, sizeof(float) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1295 if (!f->window[b]) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1296 compute_window(n, f->window[b]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1297 f->bit_reverse[b] = (uint16 ) setup_malloc(f, sizeof(uint16) n8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1298 if (!f->bit_reverse[b]) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1299 compute_bitreverse(n, f->bit_reverse[b]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1300 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1301 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1302
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1303 static void neighbors(uint16 x, int n, int plow, int *phigh)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1304 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1305 int low = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1306 int high = 65536;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1307 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1308 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1309 if (x[i] > low && x[i] < x[n]) { *plow = i; low = x[i]; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1310 if (x[i] < high && x[i] > x[n]) { *phigh = i; high = x[i]; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1311 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1312 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1313
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1314 // this has been repurposed so y is now the original index instead of y
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1315 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1316 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1317 uint16 x,id;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1318 } stbv__floor_ordering;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1319
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1320 static int STBV_CDECL point_compare(const void p, const void q)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1321 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1322 stbv__floor_ordering a = (stbv__floor_ordering ) p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1323 stbv__floor_ordering b = (stbv__floor_ordering ) q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1324 return a->x < b->x ? -1 : a->x > b->x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1325 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1326
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1327 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1328 /////////////////////// END LEAF SETUP FUNCTIONS //////////////////////////
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1329
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1330
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1331 #if defined(STB_VORBIS_NO_STDIO)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1332 #define USE_MEMORY(z) TRUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1333 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1334 #define USE_MEMORY(z) ((z)->stream)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1335 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1336
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1337 static uint8 get8(vorb *z)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1338 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1339 if (USE_MEMORY(z)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1340 if (z->stream >= z->stream_end) { z->eof = TRUE; return 0; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1341 return *z->stream++;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1342 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1343
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1344 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1345 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1346 int c = fgetc(z->f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1347 if (c == EOF) { z->eof = TRUE; return 0; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1348 return c;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1349 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1350 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1351 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1352
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1353 static uint32 get32(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1354 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1355 uint32 x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1356 x = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1357 x += get8(f) << 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1358 x += get8(f) << 16;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1359 x += (uint32) get8(f) << 24;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1360 return x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1361 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1362
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1363 static int getn(vorb z, uint8 data, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1364 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1365 if (USE_MEMORY(z)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1366 if (z->stream+n > z->stream_end) { z->eof = 1; return 0; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1367 memcpy(data, z->stream, n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1368 z->stream += n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1369 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1370 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1371
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1372 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1373 if (fread(data, n, 1, z->f) == 1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1374 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1375 else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1376 z->eof = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1377 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1378 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1379 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1380 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1381
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1382 static void skip(vorb *z, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1383 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1384 if (USE_MEMORY(z)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1385 z->stream += n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1386 if (z->stream >= z->stream_end) z->eof = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1387 return;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1388 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1389 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1390 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1391 long x = ftell(z->f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1392 fseek(z->f, x+n, SEEK_SET);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1393 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1394 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1395 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1396
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1397 static int set_file_offset(stb_vorbis *f, unsigned int loc)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1398 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1399 #ifndef STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1400 if (f->push_mode) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1401 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1402 f->eof = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1403 if (USE_MEMORY(f)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1404 if (f->stream_start + loc >= f->stream_end \|\| f->stream_start + loc < f->stream_start) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1405 f->stream = f->stream_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1406 f->eof = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1407 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1408 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1409 f->stream = f->stream_start + loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1410 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1411 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1412 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1413 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1414 if (loc + f->f_start < loc \|\| loc >= 0x80000000) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1415 loc = 0x7fffffff;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1416 f->eof = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1417 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1418 loc += f->f_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1419 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1420 if (!fseek(f->f, loc, SEEK_SET))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1421 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1422 f->eof = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1423 fseek(f->f, f->f_start, SEEK_END);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1424 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1425 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1426 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1427
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1428
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1429 static uint8 ogg_page_header[4] = { 0x4f, 0x67, 0x67, 0x53 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1430
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1431 static int capture_pattern(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1432 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1433 if (0x4f != get8(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1434 if (0x67 != get8(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1435 if (0x67 != get8(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1436 if (0x53 != get8(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1437 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1438 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1439
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1440 #define PAGEFLAG_continued_packet 1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1441 #define PAGEFLAG_first_page 2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1442 #define PAGEFLAG_last_page 4
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1443
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1444 static int start_page_no_capturepattern(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1445 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1446 uint32 loc0,loc1,n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1447 if (f->first_decode && !IS_PUSH_MODE(f)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1448 f->p_first.page_start = stb_vorbis_get_file_offset(f) - 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1449 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1450 // stream structure version
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1451 if (0 != get8(f)) return error(f, VORBIS_invalid_stream_structure_version);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1452 // header flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1453 f->page_flag = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1454 // absolute granule position
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1455 loc0 = get32(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1456 loc1 = get32(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1457 // @TODO: validate loc0,loc1 as valid positions?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1458 // stream serial number -- vorbis doesn't interleave, so discard
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1459 get32(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1460 //if (f->serial != get32(f)) return error(f, VORBIS_incorrect_stream_serial_number);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1461 // page sequence number
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1462 n = get32(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1463 f->last_page = n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1464 // CRC32
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1465 get32(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1466 // page_segments
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1467 f->segment_count = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1468 if (!getn(f, f->segments, f->segment_count))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1469 return error(f, VORBIS_unexpected_eof);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1470 // assume we _don't_ know any the sample position of any segments
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1471 f->end_seg_with_known_loc = -2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1472 if (loc0 != ~0U \|\| loc1 != ~0U) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1473 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1474 // determine which packet is the last one that will complete
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1475 for (i=f->segment_count-1; i >= 0; --i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1476 if (f->segments[i] < 255)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1477 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1478 // 'i' is now the index of the _last_ segment of a packet that ends
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1479 if (i >= 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1480 f->end_seg_with_known_loc = i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1481 f->known_loc_for_packet = loc0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1482 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1483 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1484 if (f->first_decode) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1485 int i,len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1486 len = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1487 for (i=0; i < f->segment_count; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1488 len += f->segments[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1489 len += 27 + f->segment_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1490 f->p_first.page_end = f->p_first.page_start + len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1491 f->p_first.last_decoded_sample = loc0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1492 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1493 f->next_seg = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1494 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1495 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1496
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1497 static int start_page(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1498 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1499 if (!capture_pattern(f)) return error(f, VORBIS_missing_capture_pattern);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1500 return start_page_no_capturepattern(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1501 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1502
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1503 static int start_packet(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1504 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1505 while (f->next_seg == -1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1506 if (!start_page(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1507 if (f->page_flag & PAGEFLAG_continued_packet)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1508 return error(f, VORBIS_continued_packet_flag_invalid);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1509 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1510 f->last_seg = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1511 f->valid_bits = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1512 f->packet_bytes = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1513 f->bytes_in_seg = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1514 // f->next_seg is now valid
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1515 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1516 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1517
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1518 static int maybe_start_packet(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1519 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1520 if (f->next_seg == -1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1521 int x = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1522 if (f->eof) return FALSE; // EOF at page boundary is not an error!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1523 if (0x4f != x ) return error(f, VORBIS_missing_capture_pattern);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1524 if (0x67 != get8(f)) return error(f, VORBIS_missing_capture_pattern);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1525 if (0x67 != get8(f)) return error(f, VORBIS_missing_capture_pattern);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1526 if (0x53 != get8(f)) return error(f, VORBIS_missing_capture_pattern);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1527 if (!start_page_no_capturepattern(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1528 if (f->page_flag & PAGEFLAG_continued_packet) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1529 // set up enough state that we can read this packet if we want,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1530 // e.g. during recovery
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1531 f->last_seg = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1532 f->bytes_in_seg = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1533 return error(f, VORBIS_continued_packet_flag_invalid);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1534 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1535 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1536 return start_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1537 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1538
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1539 static int next_segment(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1540 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1541 int len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1542 if (f->last_seg) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1543 if (f->next_seg == -1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1544 f->last_seg_which = f->segment_count-1; // in case start_page fails
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1545 if (!start_page(f)) { f->last_seg = 1; return 0; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1546 if (!(f->page_flag & PAGEFLAG_continued_packet)) return error(f, VORBIS_continued_packet_flag_invalid);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1547 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1548 len = f->segments[f->next_seg++];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1549 if (len < 255) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1550 f->last_seg = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1551 f->last_seg_which = f->next_seg-1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1552 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1553 if (f->next_seg >= f->segment_count)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1554 f->next_seg = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1555 assert(f->bytes_in_seg == 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1556 f->bytes_in_seg = len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1557 return len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1558 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1559
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1560 #define EOP (-1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1561 #define INVALID_BITS (-1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1562
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1563 static int get8_packet_raw(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1564 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1565 if (!f->bytes_in_seg) { // CLANG!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1566 if (f->last_seg) return EOP;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1567 else if (!next_segment(f)) return EOP;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1568 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1569 assert(f->bytes_in_seg > 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1570 --f->bytes_in_seg;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1571 ++f->packet_bytes;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1572 return get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1573 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1574
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1575 static int get8_packet(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1576 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1577 int x = get8_packet_raw(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1578 f->valid_bits = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1579 return x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1580 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1581
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1582 static int get32_packet(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1583 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1584 uint32 x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1585 x = get8_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1586 x += get8_packet(f) << 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1587 x += get8_packet(f) << 16;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1588 x += (uint32) get8_packet(f) << 24;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1589 return x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1590 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1591
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1592 static void flush_packet(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1593 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1594 while (get8_packet_raw(f) != EOP);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1595 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1596
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1597 // @OPTIMIZE: this is the secondary bit decoder, so it's probably not as important
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1598 // as the huffman decoder?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1599 static uint32 get_bits(vorb *f, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1600 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1601 uint32 z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1602
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1603 if (f->valid_bits < 0) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1604 if (f->valid_bits < n) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1605 if (n > 24) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1606 // the accumulator technique below would not work correctly in this case
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1607 z = get_bits(f, 24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1608 z += get_bits(f, n-24) << 24;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1609 return z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1610 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1611 if (f->valid_bits == 0) f->acc = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1612 while (f->valid_bits < n) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1613 int z = get8_packet_raw(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1614 if (z == EOP) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1615 f->valid_bits = INVALID_BITS;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1616 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1617 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1618 f->acc += z << f->valid_bits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1619 f->valid_bits += 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1620 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1621 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1622
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1623 assert(f->valid_bits >= n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1624 z = f->acc & ((1 << n)-1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1625 f->acc >>= n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1626 f->valid_bits -= n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1627 return z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1628 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1629
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1630 // @OPTIMIZE: primary accumulator for huffman
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1631 // expand the buffer to as many bits as possible without reading off end of packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1632 // it might be nice to allow f->valid_bits and f->acc to be stored in registers,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1633 // e.g. cache them locally and decode locally
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1634 static __forceinline void prep_huffman(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1635 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1636 if (f->valid_bits <= 24) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1637 if (f->valid_bits == 0) f->acc = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1638 do {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1639 int z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1640 if (f->last_seg && !f->bytes_in_seg) return;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1641 z = get8_packet_raw(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1642 if (z == EOP) return;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1643 f->acc += (unsigned) z << f->valid_bits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1644 f->valid_bits += 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1645 } while (f->valid_bits <= 24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1646 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1647 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1648
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1649 enum
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1650 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1651 VORBIS_packet_id = 1,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1652 VORBIS_packet_comment = 3,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1653 VORBIS_packet_setup = 5
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1654 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1655
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1656 static int codebook_decode_scalar_raw(vorb f, Codebook c)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1657 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1658 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1659 prep_huffman(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1660
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1661 if (c->codewords == NULL && c->sorted_codewords == NULL)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1662 return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1663
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1664 // cases to use binary search: sorted_codewords && !c->codewords
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1665 // sorted_codewords && c->entries > 8
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1666 if (c->entries > 8 ? c->sorted_codewords!=NULL : !c->codewords) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1667 // binary search
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1668 uint32 code = bit_reverse(f->acc);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1669 int x=0, n=c->sorted_entries, len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1670
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1671 while (n > 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1672 // invariant: sc[x] <= code < sc[x+n]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1673 int m = x + (n >> 1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1674 if (c->sorted_codewords[m] <= code) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1675 x = m;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1676 n -= (n>>1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1677 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1678 n >>= 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1679 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1680 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1681 // x is now the sorted index
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1682 if (!c->sparse) x = c->sorted_values[x];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1683 // x is now sorted index if sparse, or symbol otherwise
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1684 len = c->codeword_lengths[x];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1685 if (f->valid_bits >= len) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1686 f->acc >>= len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1687 f->valid_bits -= len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1688 return x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1689 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1690
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1691 f->valid_bits = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1692 return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1693 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1694
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1695 // if small, linear search
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1696 assert(!c->sparse);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1697 for (i=0; i < c->entries; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1698 if (c->codeword_lengths[i] == NO_CODE) continue;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1699 if (c->codewords[i] == (f->acc & ((1 << c->codeword_lengths[i])-1))) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1700 if (f->valid_bits >= c->codeword_lengths[i]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1701 f->acc >>= c->codeword_lengths[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1702 f->valid_bits -= c->codeword_lengths[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1703 return i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1704 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1705 f->valid_bits = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1706 return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1707 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1708 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1709
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1710 error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1711 f->valid_bits = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1712 return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1713 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1714
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1715 #ifndef STB_VORBIS_NO_INLINE_DECODE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1716
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1717 #define DECODE_RAW(var, f,c) \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1718 if (f->valid_bits < STB_VORBIS_FAST_HUFFMAN_LENGTH) \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1719 prep_huffman(f); \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1720 var = f->acc & FAST_HUFFMAN_TABLE_MASK; \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1721 var = c->fast_huffman[var]; \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1722 if (var >= 0) { \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1723 int n = c->codeword_lengths[var]; \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1724 f->acc >>= n; \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1725 f->valid_bits -= n; \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1726 if (f->valid_bits < 0) { f->valid_bits = 0; var = -1; } \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1727 } else { \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1728 var = codebook_decode_scalar_raw(f,c); \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1729 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1730
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1731 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1732
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1733 static int codebook_decode_scalar(vorb f, Codebook c)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1734 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1735 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1736 if (f->valid_bits < STB_VORBIS_FAST_HUFFMAN_LENGTH)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1737 prep_huffman(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1738 // fast huffman table lookup
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1739 i = f->acc & FAST_HUFFMAN_TABLE_MASK;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1740 i = c->fast_huffman[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1741 if (i >= 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1742 f->acc >>= c->codeword_lengths[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1743 f->valid_bits -= c->codeword_lengths[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1744 if (f->valid_bits < 0) { f->valid_bits = 0; return -1; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1745 return i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1746 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1747 return codebook_decode_scalar_raw(f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1748 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1749
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1750 #define DECODE_RAW(var,f,c) var = codebook_decode_scalar(f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1751
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1752 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1753
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1754 #define DECODE(var,f,c) \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1755 DECODE_RAW(var,f,c) \
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1756 if (c->sparse) var = c->sorted_values[var];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1757
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1758 #ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1759 #define DECODE_VQ(var,f,c) DECODE_RAW(var,f,c)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1760 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1761 #define DECODE_VQ(var,f,c) DECODE(var,f,c)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1762 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1763
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1764
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1765
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1766
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1767
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1768
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1769 // CODEBOOK_ELEMENT_FAST is an optimization for the CODEBOOK_FLOATS case
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1770 // where we avoid one addition
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1771 #define CODEBOOK_ELEMENT(c,off) (c->multiplicands[off])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1772 #define CODEBOOK_ELEMENT_FAST(c,off) (c->multiplicands[off])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1773 #define CODEBOOK_ELEMENT_BASE(c) (0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1774
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1775 static int codebook_decode_start(vorb f, Codebook c)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1776 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1777 int z = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1778
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1779 // type 0 is only legal in a scalar context
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1780 if (c->lookup_type == 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1781 error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1782 else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1783 DECODE_VQ(z,f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1784 if (c->sparse) assert(z < c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1785 if (z < 0) { // check for EOP
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1786 if (!f->bytes_in_seg)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1787 if (f->last_seg)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1788 return z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1789 error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1790 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1791 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1792 return z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1793 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1794
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1795 static int codebook_decode(vorb f, Codebook c, float *output, int len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1796 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1797 int i,z = codebook_decode_start(f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1798 if (z < 0) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1799 if (len > c->dimensions) len = c->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1800
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1801 #ifdef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1802 if (c->lookup_type == 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1803 float last = CODEBOOK_ELEMENT_BASE(c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1804 int div = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1805 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1806 int off = (z / div) % c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1807 float val = CODEBOOK_ELEMENT_FAST(c,off) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1808 output[i] += val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1809 if (c->sequence_p) last = val + c->minimum_value;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1810 div *= c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1811 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1812 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1813 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1814 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1815
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1816 z *= c->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1817 if (c->sequence_p) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1818 float last = CODEBOOK_ELEMENT_BASE(c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1819 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1820 float val = CODEBOOK_ELEMENT_FAST(c,z+i) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1821 output[i] += val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1822 last = val + c->minimum_value;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1823 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1824 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1825 float last = CODEBOOK_ELEMENT_BASE(c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1826 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1827 output[i] += CODEBOOK_ELEMENT_FAST(c,z+i) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1828 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1829 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1830
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1831 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1832 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1833
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1834 static int codebook_decode_step(vorb f, Codebook c, float *output, int len, int step)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1835 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1836 int i,z = codebook_decode_start(f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1837 float last = CODEBOOK_ELEMENT_BASE(c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1838 if (z < 0) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1839 if (len > c->dimensions) len = c->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1840
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1841 #ifdef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1842 if (c->lookup_type == 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1843 int div = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1844 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1845 int off = (z / div) % c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1846 float val = CODEBOOK_ELEMENT_FAST(c,off) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1847 output[i*step] += val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1848 if (c->sequence_p) last = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1849 div *= c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1850 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1851 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1852 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1853 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1854
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1855 z *= c->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1856 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1857 float val = CODEBOOK_ELEMENT_FAST(c,z+i) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1858 output[i*step] += val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1859 if (c->sequence_p) last = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1860 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1861
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1862 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1863 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1864
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1865 static int codebook_decode_deinterleave_repeat(vorb f, Codebook c, float *outputs, int ch, int c_inter_p, int *p_inter_p, int len, int total_decode)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1866 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1867 int c_inter = *c_inter_p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1868 int p_inter = *p_inter_p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1869 int i,z, effective = c->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1870
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1871 // type 0 is only legal in a scalar context
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1872 if (c->lookup_type == 0) return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1873
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1874 while (total_decode > 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1875 float last = CODEBOOK_ELEMENT_BASE(c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1876 DECODE_VQ(z,f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1877 #ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1878 assert(!c->sparse \|\| z < c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1879 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1880 if (z < 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1881 if (!f->bytes_in_seg)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1882 if (f->last_seg) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1883 return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1884 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1885
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1886 // if this will take us off the end of the buffers, stop short!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1887 // we check by computing the length of the virtual interleaved
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1888 // buffer (lench), our current offset within it (p_interch)+(c_inter),
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1889 // and the length we'll be using (effective)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1890 if (c_inter + p_interch + effective > len ch) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1891 effective = lench - (p_interch - c_inter);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1892 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1893
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1894 #ifdef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1895 if (c->lookup_type == 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1896 int div = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1897 for (i=0; i < effective; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1898 int off = (z / div) % c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1899 float val = CODEBOOK_ELEMENT_FAST(c,off) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1900 if (outputs[c_inter])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1901 outputs[c_inter][p_inter] += val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1902 if (++c_inter == ch) { c_inter = 0; ++p_inter; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1903 if (c->sequence_p) last = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1904 div *= c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1905 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1906 } else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1907 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1908 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1909 z *= c->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1910 if (c->sequence_p) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1911 for (i=0; i < effective; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1912 float val = CODEBOOK_ELEMENT_FAST(c,z+i) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1913 if (outputs[c_inter])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1914 outputs[c_inter][p_inter] += val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1915 if (++c_inter == ch) { c_inter = 0; ++p_inter; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1916 last = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1917 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1918 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1919 for (i=0; i < effective; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1920 float val = CODEBOOK_ELEMENT_FAST(c,z+i) + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1921 if (outputs[c_inter])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1922 outputs[c_inter][p_inter] += val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1923 if (++c_inter == ch) { c_inter = 0; ++p_inter; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1924 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1925 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1926 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1927
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1928 total_decode -= effective;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1929 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1930 *c_inter_p = c_inter;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1931 *p_inter_p = p_inter;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1932 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1933 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1934
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1935 static int predict_point(int x, int x0, int x1, int y0, int y1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1936 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1937 int dy = y1 - y0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1938 int adx = x1 - x0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1939 // @OPTIMIZE: force int division to round in the right direction... is this necessary on x86?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1940 int err = abs(dy) * (x - x0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1941 int off = err / adx;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1942 return dy < 0 ? y0 - off : y0 + off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1943 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1944
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1945 // the following table is block-copied from the specification
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1946 static float inverse_db_table[256] =
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1947 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1948 1.0649863e-07f, 1.1341951e-07f, 1.2079015e-07f, 1.2863978e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1949 1.3699951e-07f, 1.4590251e-07f, 1.5538408e-07f, 1.6548181e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1950 1.7623575e-07f, 1.8768855e-07f, 1.9988561e-07f, 2.1287530e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1951 2.2670913e-07f, 2.4144197e-07f, 2.5713223e-07f, 2.7384213e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1952 2.9163793e-07f, 3.1059021e-07f, 3.3077411e-07f, 3.5226968e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1953 3.7516214e-07f, 3.9954229e-07f, 4.2550680e-07f, 4.5315863e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1954 4.8260743e-07f, 5.1396998e-07f, 5.4737065e-07f, 5.8294187e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1955 6.2082472e-07f, 6.6116941e-07f, 7.0413592e-07f, 7.4989464e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1956 7.9862701e-07f, 8.5052630e-07f, 9.0579828e-07f, 9.6466216e-07f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1957 1.0273513e-06f, 1.0941144e-06f, 1.1652161e-06f, 1.2409384e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1958 1.3215816e-06f, 1.4074654e-06f, 1.4989305e-06f, 1.5963394e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1959 1.7000785e-06f, 1.8105592e-06f, 1.9282195e-06f, 2.0535261e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1960 2.1869758e-06f, 2.3290978e-06f, 2.4804557e-06f, 2.6416497e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1961 2.8133190e-06f, 2.9961443e-06f, 3.1908506e-06f, 3.3982101e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1962 3.6190449e-06f, 3.8542308e-06f, 4.1047004e-06f, 4.3714470e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1963 4.6555282e-06f, 4.9580707e-06f, 5.2802740e-06f, 5.6234160e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1964 5.9888572e-06f, 6.3780469e-06f, 6.7925283e-06f, 7.2339451e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1965 7.7040476e-06f, 8.2047000e-06f, 8.7378876e-06f, 9.3057248e-06f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1966 9.9104632e-06f, 1.0554501e-05f, 1.1240392e-05f, 1.1970856e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1967 1.2748789e-05f, 1.3577278e-05f, 1.4459606e-05f, 1.5399272e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1968 1.6400004e-05f, 1.7465768e-05f, 1.8600792e-05f, 1.9809576e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1969 2.1096914e-05f, 2.2467911e-05f, 2.3928002e-05f, 2.5482978e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1970 2.7139006e-05f, 2.8902651e-05f, 3.0780908e-05f, 3.2781225e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1971 3.4911534e-05f, 3.7180282e-05f, 3.9596466e-05f, 4.2169667e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1972 4.4910090e-05f, 4.7828601e-05f, 5.0936773e-05f, 5.4246931e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1973 5.7772202e-05f, 6.1526565e-05f, 6.5524908e-05f, 6.9783085e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1974 7.4317983e-05f, 7.9147585e-05f, 8.4291040e-05f, 8.9768747e-05f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1975 9.5602426e-05f, 0.00010181521f, 0.00010843174f, 0.00011547824f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1976 0.00012298267f, 0.00013097477f, 0.00013948625f, 0.00014855085f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1977 0.00015820453f, 0.00016848555f, 0.00017943469f, 0.00019109536f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1978 0.00020351382f, 0.00021673929f, 0.00023082423f, 0.00024582449f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1979 0.00026179955f, 0.00027881276f, 0.00029693158f, 0.00031622787f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1980 0.00033677814f, 0.00035866388f, 0.00038197188f, 0.00040679456f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1981 0.00043323036f, 0.00046138411f, 0.00049136745f, 0.00052329927f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1982 0.00055730621f, 0.00059352311f, 0.00063209358f, 0.00067317058f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1983 0.00071691700f, 0.00076350630f, 0.00081312324f, 0.00086596457f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1984 0.00092223983f, 0.00098217216f, 0.0010459992f, 0.0011139742f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1985 0.0011863665f, 0.0012634633f, 0.0013455702f, 0.0014330129f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1986 0.0015261382f, 0.0016253153f, 0.0017309374f, 0.0018434235f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1987 0.0019632195f, 0.0020908006f, 0.0022266726f, 0.0023713743f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1988 0.0025254795f, 0.0026895994f, 0.0028643847f, 0.0030505286f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1989 0.0032487691f, 0.0034598925f, 0.0036847358f, 0.0039241906f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1990 0.0041792066f, 0.0044507950f, 0.0047400328f, 0.0050480668f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1991 0.0053761186f, 0.0057254891f, 0.0060975636f, 0.0064938176f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1992 0.0069158225f, 0.0073652516f, 0.0078438871f, 0.0083536271f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1993 0.0088964928f, 0.009474637f, 0.010090352f, 0.010746080f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1994 0.011444421f, 0.012188144f, 0.012980198f, 0.013823725f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1995 0.014722068f, 0.015678791f, 0.016697687f, 0.017782797f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1996 0.018938423f, 0.020169149f, 0.021479854f, 0.022875735f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1997 0.024362330f, 0.025945531f, 0.027631618f, 0.029427276f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1998 0.031339626f, 0.033376252f, 0.035545228f, 0.037855157f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	1999 0.040315199f, 0.042935108f, 0.045725273f, 0.048696758f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2000 0.051861348f, 0.055231591f, 0.058820850f, 0.062643361f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2001 0.066714279f, 0.071049749f, 0.075666962f, 0.080584227f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2002 0.085821044f, 0.091398179f, 0.097337747f, 0.10366330f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2003 0.11039993f, 0.11757434f, 0.12521498f, 0.13335215f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2004 0.14201813f, 0.15124727f, 0.16107617f, 0.17154380f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2005 0.18269168f, 0.19456402f, 0.20720788f, 0.22067342f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2006 0.23501402f, 0.25028656f, 0.26655159f, 0.28387361f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2007 0.30232132f, 0.32196786f, 0.34289114f, 0.36517414f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2008 0.38890521f, 0.41417847f, 0.44109412f, 0.46975890f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2009 0.50028648f, 0.53279791f, 0.56742212f, 0.60429640f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2010 0.64356699f, 0.68538959f, 0.72993007f, 0.77736504f,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2011 0.82788260f, 0.88168307f, 0.9389798f, 1.0f
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2012 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2013
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2014
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2015 // @OPTIMIZE: if you want to replace this bresenham line-drawing routine,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2016 // note that you must produce bit-identical output to decode correctly;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2017 // this specific sequence of operations is specified in the spec (it's
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2018 // drawing integer-quantized frequency-space lines that the encoder
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2019 // expects to be exactly the same)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2020 // ... also, isn't the whole point of Bresenham's algorithm to NOT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2021 // have to divide in the setup? sigh.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2022 #ifndef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2023 #define LINE_OP(a,b) a *= b
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2024 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2025 #define LINE_OP(a,b) a = b
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2026 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2027
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2028 #ifdef STB_VORBIS_DIVIDE_TABLE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2029 #define DIVTAB_NUMER 32
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2030 #define DIVTAB_DENOM 64
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2031 int8 integer_divide_table[DIVTAB_NUMER][DIVTAB_DENOM]; // 2KB
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2032 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2033
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2034 static __forceinline void draw_line(float *output, int x0, int y0, int x1, int y1, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2035 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2036 int dy = y1 - y0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2037 int adx = x1 - x0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2038 int ady = abs(dy);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2039 int base;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2040 int x=x0,y=y0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2041 int err = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2042 int sy;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2043
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2044 #ifdef STB_VORBIS_DIVIDE_TABLE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2045 if (adx < DIVTAB_DENOM && ady < DIVTAB_NUMER) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2046 if (dy < 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2047 base = -integer_divide_table[ady][adx];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2048 sy = base-1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2049 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2050 base = integer_divide_table[ady][adx];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2051 sy = base+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2052 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2053 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2054 base = dy / adx;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2055 if (dy < 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2056 sy = base - 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2057 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2058 sy = base+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2059 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2060 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2061 base = dy / adx;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2062 if (dy < 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2063 sy = base - 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2064 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2065 sy = base+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2066 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2067 ady -= abs(base) * adx;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2068 if (x1 > n) x1 = n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2069 if (x < x1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2070 LINE_OP(output[x], inverse_db_table[y&255]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2071 for (++x; x < x1; ++x) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2072 err += ady;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2073 if (err >= adx) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2074 err -= adx;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2075 y += sy;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2076 } else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2077 y += base;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2078 LINE_OP(output[x], inverse_db_table[y&255]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2079 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2080 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2081 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2082
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2083 static int residue_decode(vorb f, Codebook book, float *target, int offset, int n, int rtype)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2084 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2085 int k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2086 if (rtype == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2087 int step = n / book->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2088 for (k=0; k < step; ++k)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2089 if (!codebook_decode_step(f, book, target+offset+k, n-offset-k, step))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2090 return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2091 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2092 for (k=0; k < n; ) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2093 if (!codebook_decode(f, book, target+offset, n-k))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2094 return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2095 k += book->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2096 offset += book->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2097 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2098 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2099 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2100 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2101
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2102 // n is 1/2 of the blocksize --
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2103 // specification: "Correct per-vector decode length is [n]/2"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2104 static void decode_residue(vorb f, float residue_buffers[], int ch, int n, int rn, uint8 *do_not_decode)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2105 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2106 int i,j,pass;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2107 Residue *r = f->residue_config + rn;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2108 int rtype = f->residue_types[rn];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2109 int c = r->classbook;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2110 int classwords = f->codebooks[c].dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2111 unsigned int actual_size = rtype == 2 ? n*2 : n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2112 unsigned int limit_r_begin = (r->begin < actual_size ? r->begin : actual_size);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2113 unsigned int limit_r_end = (r->end < actual_size ? r->end : actual_size);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2114 int n_read = limit_r_end - limit_r_begin;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2115 int part_read = n_read / r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2116 int temp_alloc_point = temp_alloc_save(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2117 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2118 uint8 *part_classdata = (uint8 ) temp_block_array(f,f->channels, part_read sizeof(**part_classdata));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2119 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2120 int classifications = (int ) temp_block_array(f,f->channels, part_read * sizeof(**classifications));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2121 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2122
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2123 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2124
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2125 for (i=0; i < ch; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2126 if (!do_not_decode[i])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2127 memset(residue_buffers[i], 0, sizeof(float) * n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2128
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2129 if (rtype == 2 && ch != 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2130 for (j=0; j < ch; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2131 if (!do_not_decode[j])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2132 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2133 if (j == ch)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2134 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2135
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2136 for (pass=0; pass < 8; ++pass) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2137 int pcount = 0, class_set = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2138 if (ch == 2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2139 while (pcount < part_read) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2140 int z = r->begin + pcount*r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2141 int c_inter = (z & 1), p_inter = z>>1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2142 if (pass == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2143 Codebook *c = f->codebooks+r->classbook;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2144 int q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2145 DECODE(q,f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2146 if (q == EOP) goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2147 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2148 part_classdata[0][class_set] = r->classdata[q];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2149 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2150 for (i=classwords-1; i >= 0; --i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2151 classifications[0][i+pcount] = q % r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2152 q /= r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2153 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2154 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2155 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2156 for (i=0; i < classwords && pcount < part_read; ++i, ++pcount) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2157 int z = r->begin + pcount*r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2158 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2159 int c = part_classdata[0][class_set][i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2160 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2161 int c = classifications[0][pcount];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2162 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2163 int b = r->residue_books[c][pass];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2164 if (b >= 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2165 Codebook *book = f->codebooks + b;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2166 #ifdef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2167 if (!codebook_decode_deinterleave_repeat(f, book, residue_buffers, ch, &c_inter, &p_inter, n, r->part_size))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2168 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2169 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2170 // saves 1%
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2171 if (!codebook_decode_deinterleave_repeat(f, book, residue_buffers, ch, &c_inter, &p_inter, n, r->part_size))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2172 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2173 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2174 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2175 z += r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2176 c_inter = z & 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2177 p_inter = z >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2178 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2179 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2180 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2181 ++class_set;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2182 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2183 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2184 } else if (ch > 2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2185 while (pcount < part_read) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2186 int z = r->begin + pcount*r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2187 int c_inter = z % ch, p_inter = z/ch;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2188 if (pass == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2189 Codebook *c = f->codebooks+r->classbook;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2190 int q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2191 DECODE(q,f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2192 if (q == EOP) goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2193 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2194 part_classdata[0][class_set] = r->classdata[q];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2195 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2196 for (i=classwords-1; i >= 0; --i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2197 classifications[0][i+pcount] = q % r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2198 q /= r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2199 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2200 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2201 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2202 for (i=0; i < classwords && pcount < part_read; ++i, ++pcount) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2203 int z = r->begin + pcount*r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2204 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2205 int c = part_classdata[0][class_set][i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2206 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2207 int c = classifications[0][pcount];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2208 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2209 int b = r->residue_books[c][pass];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2210 if (b >= 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2211 Codebook *book = f->codebooks + b;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2212 if (!codebook_decode_deinterleave_repeat(f, book, residue_buffers, ch, &c_inter, &p_inter, n, r->part_size))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2213 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2214 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2215 z += r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2216 c_inter = z % ch;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2217 p_inter = z / ch;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2218 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2219 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2220 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2221 ++class_set;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2222 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2223 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2224 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2225 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2226 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2227 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2228 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2229
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2230 for (pass=0; pass < 8; ++pass) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2231 int pcount = 0, class_set=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2232 while (pcount < part_read) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2233 if (pass == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2234 for (j=0; j < ch; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2235 if (!do_not_decode[j]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2236 Codebook *c = f->codebooks+r->classbook;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2237 int temp;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2238 DECODE(temp,f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2239 if (temp == EOP) goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2240 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2241 part_classdata[j][class_set] = r->classdata[temp];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2242 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2243 for (i=classwords-1; i >= 0; --i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2244 classifications[j][i+pcount] = temp % r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2245 temp /= r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2246 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2247 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2248 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2249 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2250 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2251 for (i=0; i < classwords && pcount < part_read; ++i, ++pcount) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2252 for (j=0; j < ch; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2253 if (!do_not_decode[j]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2254 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2255 int c = part_classdata[j][class_set][i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2256 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2257 int c = classifications[j][pcount];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2258 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2259 int b = r->residue_books[c][pass];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2260 if (b >= 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2261 float *target = residue_buffers[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2262 int offset = r->begin + pcount * r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2263 int n = r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2264 Codebook *book = f->codebooks + b;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2265 if (!residue_decode(f, book, target, offset, n, rtype))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2266 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2267 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2268 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2269 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2270 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2271 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2272 ++class_set;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2273 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2274 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2275 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2276 done:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2277 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2278 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2279 temp_free(f,part_classdata);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2280 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2281 temp_free(f,classifications);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2282 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2283 temp_alloc_restore(f,temp_alloc_point);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2284 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2285
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2286
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2287 #if 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2288 // slow way for debugging
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2289 void inverse_mdct_slow(float *buffer, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2290 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2291 int i,j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2292 int n2 = n >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2293 float x = (float ) malloc(sizeof(x) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2294 memcpy(x, buffer, sizeof(x) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2295 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2296 float acc = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2297 for (j=0; j < n2; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2298 // formula from paper:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2299 //acc += n/4.0f * x[j] * (float) cos(M_PI / 2 / n * (2 * i + 1 + n/2.0)(2j+1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2300 // formula from wikipedia
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2301 //acc += 2.0f / n2 * x[j] * (float) cos(M_PI/n2 * (i + 0.5 + n2/2)*(j + 0.5));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2302 // these are equivalent, except the formula from the paper inverts the multiplier!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2303 // however, what actually works is NO MULTIPLIER!?!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2304 //acc += 64 * 2.0f / n2 * x[j] * (float) cos(M_PI/n2 * (i + 0.5 + n2/2)*(j + 0.5));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2305 acc += x[j] * (float) cos(M_PI / 2 / n * (2 * i + 1 + n/2.0)(2j+1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2306 buffer[i] = acc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2307 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2308 free(x);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2309 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2310 #elif 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2311 // same as above, but just barely able to run in real time on modern machines
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2312 void inverse_mdct_slow(float buffer, int n, vorb f, int blocktype)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2313 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2314 float mcos[16384];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2315 int i,j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2316 int n2 = n >> 1, nmask = (n << 2) -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2317 float x = (float ) malloc(sizeof(x) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2318 memcpy(x, buffer, sizeof(x) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2319 for (i=0; i < 4*n; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2320 mcos[i] = (float) cos(M_PI / 2 * i / n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2321
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2322 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2323 float acc = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2324 for (j=0; j < n2; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2325 acc += x[j] * mcos[(2 * i + 1 + n2)(2j+1) & nmask];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2326 buffer[i] = acc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2327 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2328 free(x);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2329 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2330 #elif 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2331 // transform to use a slow dct-iv; this is STILL basically trivial,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2332 // but only requires half as many ops
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2333 void dct_iv_slow(float *buffer, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2334 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2335 float mcos[16384];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2336 float x[2048];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2337 int i,j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2338 int n2 = n >> 1, nmask = (n << 3) - 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2339 memcpy(x, buffer, sizeof(x) n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2340 for (i=0; i < 8*n; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2341 mcos[i] = (float) cos(M_PI / 4 * i / n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2342 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2343 float acc = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2344 for (j=0; j < n; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2345 acc += x[j] * mcos[((2 * i + 1)(2j+1)) & nmask];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2346 buffer[i] = acc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2347 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2348 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2349
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2350 void inverse_mdct_slow(float buffer, int n, vorb f, int blocktype)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2351 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2352 int i, n4 = n >> 2, n2 = n >> 1, n3_4 = n - n4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2353 float temp[4096];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2354
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2355 memcpy(temp, buffer, n2 * sizeof(float));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2356 dct_iv_slow(temp, n2); // returns -c'-d, a-b'
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2357
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2358 for (i=0; i < n4 ; ++i) buffer[i] = temp[i+n4]; // a-b'
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2359 for ( ; i < n3_4; ++i) buffer[i] = -temp[n3_4 - i - 1]; // b-a', c+d'
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2360 for ( ; i < n ; ++i) buffer[i] = -temp[i - n3_4]; // c'+d
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2361 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2362 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2363
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2364 #ifndef LIBVORBIS_MDCT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2365 #define LIBVORBIS_MDCT 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2366 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2367
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2368 #if LIBVORBIS_MDCT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2369 // directly call the vorbis MDCT using an interface documented
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2370 // by Jeff Roberts... useful for performance comparison
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2371 typedef struct
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2372 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2373 int n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2374 int log2n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2375
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2376 float *trig;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2377 int *bitrev;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2378
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2379 float scale;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2380 } mdct_lookup;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2381
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2382 extern void mdct_init(mdct_lookup *lookup, int n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2383 extern void mdct_clear(mdct_lookup *l);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2384 extern void mdct_backward(mdct_lookup init, float in, float *out);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2385
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2386 mdct_lookup M1,M2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2387
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2388 void inverse_mdct(float buffer, int n, vorb f, int blocktype)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2389 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2390 mdct_lookup *M;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2391 if (M1.n == n) M = &M1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2392 else if (M2.n == n) M = &M2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2393 else if (M1.n == 0) { mdct_init(&M1, n); M = &M1; }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2394 else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2395 if (M2.n) __asm int 3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2396 mdct_init(&M2, n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2397 M = &M2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2398 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2399
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2400 mdct_backward(M, buffer, buffer);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2401 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2402 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2403
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2404
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2405 // the following were split out into separate functions while optimizing;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2406 // they could be pushed back up but eh. __forceinline showed no change;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2407 // they're probably already being inlined.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2408 static void imdct_step3_iter0_loop(int n, float e, int i_off, int k_off, float A)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2409 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2410 float *ee0 = e + i_off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2411 float *ee2 = ee0 + k_off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2412 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2413
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2414 assert((n & 3) == 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2415 for (i=(n>>2); i > 0; --i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2416 float k00_20, k01_21;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2417 k00_20 = ee0[ 0] - ee2[ 0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2418 k01_21 = ee0[-1] - ee2[-1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2419 ee0[ 0] += ee2[ 0];//ee0[ 0] = ee0[ 0] + ee2[ 0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2420 ee0[-1] += ee2[-1];//ee0[-1] = ee0[-1] + ee2[-1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2421 ee2[ 0] = k00_20 * A[0] - k01_21 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2422 ee2[-1] = k01_21 * A[0] + k00_20 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2423 A += 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2424
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2425 k00_20 = ee0[-2] - ee2[-2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2426 k01_21 = ee0[-3] - ee2[-3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2427 ee0[-2] += ee2[-2];//ee0[-2] = ee0[-2] + ee2[-2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2428 ee0[-3] += ee2[-3];//ee0[-3] = ee0[-3] + ee2[-3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2429 ee2[-2] = k00_20 * A[0] - k01_21 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2430 ee2[-3] = k01_21 * A[0] + k00_20 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2431 A += 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2432
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2433 k00_20 = ee0[-4] - ee2[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2434 k01_21 = ee0[-5] - ee2[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2435 ee0[-4] += ee2[-4];//ee0[-4] = ee0[-4] + ee2[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2436 ee0[-5] += ee2[-5];//ee0[-5] = ee0[-5] + ee2[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2437 ee2[-4] = k00_20 * A[0] - k01_21 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2438 ee2[-5] = k01_21 * A[0] + k00_20 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2439 A += 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2440
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2441 k00_20 = ee0[-6] - ee2[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2442 k01_21 = ee0[-7] - ee2[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2443 ee0[-6] += ee2[-6];//ee0[-6] = ee0[-6] + ee2[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2444 ee0[-7] += ee2[-7];//ee0[-7] = ee0[-7] + ee2[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2445 ee2[-6] = k00_20 * A[0] - k01_21 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2446 ee2[-7] = k01_21 * A[0] + k00_20 * A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2447 A += 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2448 ee0 -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2449 ee2 -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2450 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2451 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2452
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2453 static void imdct_step3_inner_r_loop(int lim, float e, int d0, int k_off, float A, int k1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2454 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2455 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2456 float k00_20, k01_21;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2457
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2458 float *e0 = e + d0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2459 float *e2 = e0 + k_off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2460
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2461 for (i=lim >> 2; i > 0; --i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2462 k00_20 = e0[-0] - e2[-0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2463 k01_21 = e0[-1] - e2[-1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2464 e0[-0] += e2[-0];//e0[-0] = e0[-0] + e2[-0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2465 e0[-1] += e2[-1];//e0[-1] = e0[-1] + e2[-1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2466 e2[-0] = (k00_20)A[0] - (k01_21) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2467 e2[-1] = (k01_21)A[0] + (k00_20) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2468
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2469 A += k1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2470
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2471 k00_20 = e0[-2] - e2[-2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2472 k01_21 = e0[-3] - e2[-3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2473 e0[-2] += e2[-2];//e0[-2] = e0[-2] + e2[-2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2474 e0[-3] += e2[-3];//e0[-3] = e0[-3] + e2[-3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2475 e2[-2] = (k00_20)A[0] - (k01_21) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2476 e2[-3] = (k01_21)A[0] + (k00_20) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2477
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2478 A += k1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2479
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2480 k00_20 = e0[-4] - e2[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2481 k01_21 = e0[-5] - e2[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2482 e0[-4] += e2[-4];//e0[-4] = e0[-4] + e2[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2483 e0[-5] += e2[-5];//e0[-5] = e0[-5] + e2[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2484 e2[-4] = (k00_20)A[0] - (k01_21) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2485 e2[-5] = (k01_21)A[0] + (k00_20) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2486
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2487 A += k1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2488
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2489 k00_20 = e0[-6] - e2[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2490 k01_21 = e0[-7] - e2[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2491 e0[-6] += e2[-6];//e0[-6] = e0[-6] + e2[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2492 e0[-7] += e2[-7];//e0[-7] = e0[-7] + e2[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2493 e2[-6] = (k00_20)A[0] - (k01_21) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2494 e2[-7] = (k01_21)A[0] + (k00_20) A[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2495
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2496 e0 -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2497 e2 -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2498
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2499 A += k1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2500 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2501 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2502
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2503 static void imdct_step3_inner_s_loop(int n, float e, int i_off, int k_off, float A, int a_off, int k0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2504 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2505 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2506 float A0 = A[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2507 float A1 = A[0+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2508 float A2 = A[0+a_off];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2509 float A3 = A[0+a_off+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2510 float A4 = A[0+a_off*2+0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2511 float A5 = A[0+a_off*2+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2512 float A6 = A[0+a_off*3+0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2513 float A7 = A[0+a_off*3+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2514
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2515 float k00,k11;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2516
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2517 float *ee0 = e +i_off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2518 float *ee2 = ee0+k_off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2519
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2520 for (i=n; i > 0; --i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2521 k00 = ee0[ 0] - ee2[ 0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2522 k11 = ee0[-1] - ee2[-1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2523 ee0[ 0] = ee0[ 0] + ee2[ 0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2524 ee0[-1] = ee0[-1] + ee2[-1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2525 ee2[ 0] = (k00) * A0 - (k11) * A1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2526 ee2[-1] = (k11) * A0 + (k00) * A1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2527
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2528 k00 = ee0[-2] - ee2[-2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2529 k11 = ee0[-3] - ee2[-3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2530 ee0[-2] = ee0[-2] + ee2[-2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2531 ee0[-3] = ee0[-3] + ee2[-3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2532 ee2[-2] = (k00) * A2 - (k11) * A3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2533 ee2[-3] = (k11) * A2 + (k00) * A3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2534
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2535 k00 = ee0[-4] - ee2[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2536 k11 = ee0[-5] - ee2[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2537 ee0[-4] = ee0[-4] + ee2[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2538 ee0[-5] = ee0[-5] + ee2[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2539 ee2[-4] = (k00) * A4 - (k11) * A5;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2540 ee2[-5] = (k11) * A4 + (k00) * A5;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2541
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2542 k00 = ee0[-6] - ee2[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2543 k11 = ee0[-7] - ee2[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2544 ee0[-6] = ee0[-6] + ee2[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2545 ee0[-7] = ee0[-7] + ee2[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2546 ee2[-6] = (k00) * A6 - (k11) * A7;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2547 ee2[-7] = (k11) * A6 + (k00) * A7;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2548
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2549 ee0 -= k0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2550 ee2 -= k0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2551 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2552 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2553
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2554 static __forceinline void iter_54(float *z)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2555 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2556 float k00,k11,k22,k33;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2557 float y0,y1,y2,y3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2558
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2559 k00 = z[ 0] - z[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2560 y0 = z[ 0] + z[-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2561 y2 = z[-2] + z[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2562 k22 = z[-2] - z[-6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2563
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2564 z[-0] = y0 + y2; // z0 + z4 + z2 + z6
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2565 z[-2] = y0 - y2; // z0 + z4 - z2 - z6
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2566
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2567 // done with y0,y2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2568
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2569 k33 = z[-3] - z[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2570
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2571 z[-4] = k00 + k33; // z0 - z4 + z3 - z7
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2572 z[-6] = k00 - k33; // z0 - z4 - z3 + z7
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2573
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2574 // done with k33
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2575
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2576 k11 = z[-1] - z[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2577 y1 = z[-1] + z[-5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2578 y3 = z[-3] + z[-7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2579
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2580 z[-1] = y1 + y3; // z1 + z5 + z3 + z7
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2581 z[-3] = y1 - y3; // z1 + z5 - z3 - z7
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2582 z[-5] = k11 - k22; // z1 - z5 + z2 - z6
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2583 z[-7] = k11 + k22; // z1 - z5 - z2 + z6
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2584 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2585
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2586 static void imdct_step3_inner_s_loop_ld654(int n, float e, int i_off, float A, int base_n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2587 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2588 int a_off = base_n >> 3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2589 float A2 = A[0+a_off];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2590 float *z = e + i_off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2591 float base = z - 16 n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2592
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2593 while (z > base) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2594 float k00,k11;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2595 float l00,l11;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2596
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2597 k00 = z[-0] - z[ -8];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2598 k11 = z[-1] - z[ -9];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2599 l00 = z[-2] - z[-10];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2600 l11 = z[-3] - z[-11];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2601 z[ -0] = z[-0] + z[ -8];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2602 z[ -1] = z[-1] + z[ -9];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2603 z[ -2] = z[-2] + z[-10];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2604 z[ -3] = z[-3] + z[-11];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2605 z[ -8] = k00;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2606 z[ -9] = k11;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2607 z[-10] = (l00+l11) * A2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2608 z[-11] = (l11-l00) * A2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2609
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2610 k00 = z[ -4] - z[-12];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2611 k11 = z[ -5] - z[-13];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2612 l00 = z[ -6] - z[-14];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2613 l11 = z[ -7] - z[-15];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2614 z[ -4] = z[ -4] + z[-12];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2615 z[ -5] = z[ -5] + z[-13];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2616 z[ -6] = z[ -6] + z[-14];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2617 z[ -7] = z[ -7] + z[-15];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2618 z[-12] = k11;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2619 z[-13] = -k00;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2620 z[-14] = (l11-l00) * A2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2621 z[-15] = (l00+l11) * -A2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2622
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2623 iter_54(z);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2624 iter_54(z-8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2625 z -= 16;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2626 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2627 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2628
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2629 static void inverse_mdct(float buffer, int n, vorb f, int blocktype)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2630 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2631 int n2 = n >> 1, n4 = n >> 2, n8 = n >> 3, l;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2632 int ld;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2633 // @OPTIMIZE: reduce register pressure by using fewer variables?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2634 int save_point = temp_alloc_save(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2635 float buf2 = (float ) temp_alloc(f, n2 * sizeof(*buf2));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2636 float u=NULL,v=NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2637 // twiddle factors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2638 float *A = f->A[blocktype];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2639
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2640 // IMDCT algorithm from "The use of multirate filter banks for coding of high quality digital audio"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2641 // See notes about bugs in that paper in less-optimal implementation 'inverse_mdct_old' after this function.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2642
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2643 // kernel from paper
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2644
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2645
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2646 // merged:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2647 // copy and reflect spectral data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2648 // step 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2649
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2650 // note that it turns out that the items added together during
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2651 // this step are, in fact, being added to themselves (as reflected
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2652 // by step 0). inexplicable inefficiency! this became obvious
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2653 // once I combined the passes.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2654
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2655 // so there's a missing 'times 2' here (for adding X to itself).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2656 // this propagates through linearly to the end, where the numbers
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2657 // are 1/2 too small, and need to be compensated for.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2658
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2659 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2660 float d,e, AA, e_stop;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2661 d = &buf2[n2-2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2662 AA = A;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2663 e = &buffer[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2664 e_stop = &buffer[n2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2665 while (e != e_stop) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2666 d[1] = (e[0] * AA[0] - e[2]*AA[1]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2667 d[0] = (e[0] * AA[1] + e[2]*AA[0]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2668 d -= 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2669 AA += 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2670 e += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2671 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2672
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2673 e = &buffer[n2-3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2674 while (d >= buf2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2675 d[1] = (-e[2] * AA[0] - -e[0]*AA[1]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2676 d[0] = (-e[2] * AA[1] + -e[0]*AA[0]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2677 d -= 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2678 AA += 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2679 e -= 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2680 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2681 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2682
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2683 // now we use symbolic names for these, so that we can
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2684 // possibly swap their meaning as we change which operations
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2685 // are in place
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2686
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2687 u = buffer;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2688 v = buf2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2689
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2690 // step 2 (paper output is w, now u)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2691 // this could be in place, but the data ends up in the wrong
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2692 // place... _somebody_'s got to swap it, so this is nominated
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2693 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2694 float *AA = &A[n2-8];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2695 float d0,d1, e0, e1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2696
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2697 e0 = &v[n4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2698 e1 = &v[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2699
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2700 d0 = &u[n4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2701 d1 = &u[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2702
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2703 while (AA >= A) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2704 float v40_20, v41_21;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2705
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2706 v41_21 = e0[1] - e1[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2707 v40_20 = e0[0] - e1[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2708 d0[1] = e0[1] + e1[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2709 d0[0] = e0[0] + e1[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2710 d1[1] = v41_21AA[4] - v40_20AA[5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2711 d1[0] = v40_20AA[4] + v41_21AA[5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2712
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2713 v41_21 = e0[3] - e1[3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2714 v40_20 = e0[2] - e1[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2715 d0[3] = e0[3] + e1[3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2716 d0[2] = e0[2] + e1[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2717 d1[3] = v41_21AA[0] - v40_20AA[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2718 d1[2] = v40_20AA[0] + v41_21AA[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2719
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2720 AA -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2721
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2722 d0 += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2723 d1 += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2724 e0 += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2725 e1 += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2726 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2727 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2728
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2729 // step 3
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2730 ld = ilog(n) - 1; // ilog is off-by-one from normal definitions
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2731
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2732 // optimized step 3:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2733
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2734 // the original step3 loop can be nested r inside s or s inside r;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2735 // it's written originally as s inside r, but this is dumb when r
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2736 // iterates many times, and s few. So I have two copies of it and
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2737 // switch between them halfway.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2738
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2739 // this is iteration 0 of step 3
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2740 imdct_step3_iter0_loop(n >> 4, u, n2-1-n4*0, -(n >> 3), A);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2741 imdct_step3_iter0_loop(n >> 4, u, n2-1-n4*1, -(n >> 3), A);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2742
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2743 // this is iteration 1 of step 3
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2744 imdct_step3_inner_r_loop(n >> 5, u, n2-1 - n8*0, -(n >> 4), A, 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2745 imdct_step3_inner_r_loop(n >> 5, u, n2-1 - n8*1, -(n >> 4), A, 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2746 imdct_step3_inner_r_loop(n >> 5, u, n2-1 - n8*2, -(n >> 4), A, 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2747 imdct_step3_inner_r_loop(n >> 5, u, n2-1 - n8*3, -(n >> 4), A, 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2748
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2749 l=2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2750 for (; l < (ld-3)>>1; ++l) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2751 int k0 = n >> (l+2), k0_2 = k0>>1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2752 int lim = 1 << (l+1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2753 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2754 for (i=0; i < lim; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2755 imdct_step3_inner_r_loop(n >> (l+4), u, n2-1 - k0*i, -k0_2, A, 1 << (l+3));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2756 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2757
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2758 for (; l < ld-6; ++l) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2759 int k0 = n >> (l+2), k1 = 1 << (l+3), k0_2 = k0>>1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2760 int rlim = n >> (l+6), r;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2761 int lim = 1 << (l+1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2762 int i_off;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2763 float *A0 = A;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2764 i_off = n2-1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2765 for (r=rlim; r > 0; --r) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2766 imdct_step3_inner_s_loop(lim, u, i_off, -k0_2, A0, k1, k0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2767 A0 += k1*4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2768 i_off -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2769 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2770 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2771
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2772 // iterations with count:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2773 // ld-6,-5,-4 all interleaved together
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2774 // the big win comes from getting rid of needless flops
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2775 // due to the constants on pass 5 & 4 being all 1 and 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2776 // combining them to be simultaneous to improve cache made little difference
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2777 imdct_step3_inner_s_loop_ld654(n >> 5, u, n2-1, A, n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2778
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2779 // output is u
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2780
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2781 // step 4, 5, and 6
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2782 // cannot be in-place because of step 5
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2783 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2784 uint16 *bitrev = f->bit_reverse[blocktype];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2785 // weirdly, I'd have thought reading sequentially and writing
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2786 // erratically would have been better than vice-versa, but in
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2787 // fact that's not what my testing showed. (That is, with
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2788 // j = bitreverse(i), do you read i and write j, or read j and write i.)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2789
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2790 float *d0 = &v[n4-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2791 float *d1 = &v[n2-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2792 while (d0 >= v) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2793 int k4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2794
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2795 k4 = bitrev[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2796 d1[3] = u[k4+0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2797 d1[2] = u[k4+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2798 d0[3] = u[k4+2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2799 d0[2] = u[k4+3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2800
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2801 k4 = bitrev[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2802 d1[1] = u[k4+0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2803 d1[0] = u[k4+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2804 d0[1] = u[k4+2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2805 d0[0] = u[k4+3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2806
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2807 d0 -= 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2808 d1 -= 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2809 bitrev += 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2810 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2811 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2812 // (paper output is u, now v)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2813
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2814
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2815 // data must be in buf2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2816 assert(v == buf2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2817
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2818 // step 7 (paper output is v, now v)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2819 // this is now in place
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2820 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2821 float *C = f->C[blocktype];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2822 float d, e;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2823
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2824 d = v;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2825 e = v + n2 - 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2826
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2827 while (d < e) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2828 float a02,a11,b0,b1,b2,b3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2829
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2830 a02 = d[0] - e[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2831 a11 = d[1] + e[3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2832
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2833 b0 = C[1]a02 + C[0]a11;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2834 b1 = C[1]a11 - C[0]a02;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2835
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2836 b2 = d[0] + e[ 2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2837 b3 = d[1] - e[ 3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2838
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2839 d[0] = b2 + b0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2840 d[1] = b3 + b1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2841 e[2] = b2 - b0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2842 e[3] = b1 - b3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2843
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2844 a02 = d[2] - e[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2845 a11 = d[3] + e[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2846
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2847 b0 = C[3]a02 + C[2]a11;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2848 b1 = C[3]a11 - C[2]a02;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2849
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2850 b2 = d[2] + e[ 0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2851 b3 = d[3] - e[ 1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2852
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2853 d[2] = b2 + b0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2854 d[3] = b3 + b1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2855 e[0] = b2 - b0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2856 e[1] = b1 - b3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2857
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2858 C += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2859 d += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2860 e -= 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2861 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2862 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2863
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2864 // data must be in buf2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2865
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2866
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2867 // step 8+decode (paper output is X, now buffer)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2868 // this generates pairs of data a la 8 and pushes them directly through
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2869 // the decode kernel (pushing rather than pulling) to avoid having
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2870 // to make another pass later
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2871
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2872 // this cannot POSSIBLY be in place, so we refer to the buffers directly
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2873
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2874 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2875 float d0,d1,d2,d3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2876
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2877 float *B = f->B[blocktype] + n2 - 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2878 float *e = buf2 + n2 - 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2879 d0 = &buffer[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2880 d1 = &buffer[n2-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2881 d2 = &buffer[n2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2882 d3 = &buffer[n-4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2883 while (e >= v) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2884 float p0,p1,p2,p3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2885
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2886 p3 = e[6]B[7] - e[7]B[6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2887 p2 = -e[6]B[6] - e[7]B[7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2888
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2889 d0[0] = p3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2890 d1[3] = - p3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2891 d2[0] = p2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2892 d3[3] = p2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2893
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2894 p1 = e[4]B[5] - e[5]B[4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2895 p0 = -e[4]B[4] - e[5]B[5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2896
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2897 d0[1] = p1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2898 d1[2] = - p1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2899 d2[1] = p0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2900 d3[2] = p0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2901
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2902 p3 = e[2]B[3] - e[3]B[2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2903 p2 = -e[2]B[2] - e[3]B[3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2904
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2905 d0[2] = p3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2906 d1[1] = - p3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2907 d2[2] = p2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2908 d3[1] = p2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2909
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2910 p1 = e[0]B[1] - e[1]B[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2911 p0 = -e[0]B[0] - e[1]B[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2912
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2913 d0[3] = p1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2914 d1[0] = - p1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2915 d2[3] = p0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2916 d3[0] = p0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2917
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2918 B -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2919 e -= 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2920 d0 += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2921 d2 += 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2922 d1 -= 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2923 d3 -= 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2924 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2925 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2926
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2927 temp_free(f,buf2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2928 temp_alloc_restore(f,save_point);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2929 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2930
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2931 #if 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2932 // this is the original version of the above code, if you want to optimize it from scratch
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2933 void inverse_mdct_naive(float *buffer, int n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2934 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2935 float s;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2936 float A[1 << 12], B[1 << 12], C[1 << 11];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2937 int i,k,k2,k4, n2 = n >> 1, n4 = n >> 2, n8 = n >> 3, l;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2938 int n3_4 = n - n4, ld;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2939 // how can they claim this only uses N words?!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2940 // oh, because they're only used sparsely, whoops
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2941 float u[1 << 13], X[1 << 13], v[1 << 13], w[1 << 13];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2942 // set up twiddle factors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2943
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2944 for (k=k2=0; k < n4; ++k,k2+=2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2945 A[k2 ] = (float) cos(4kM_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2946 A[k2+1] = (float) -sin(4kM_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2947 B[k2 ] = (float) cos((k2+1)*M_PI/n/2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2948 B[k2+1] = (float) sin((k2+1)*M_PI/n/2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2949 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2950 for (k=k2=0; k < n8; ++k,k2+=2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2951 C[k2 ] = (float) cos(2(k2+1)M_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2952 C[k2+1] = (float) -sin(2(k2+1)M_PI/n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2953 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2954
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2955 // IMDCT algorithm from "The use of multirate filter banks for coding of high quality digital audio"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2956 // Note there are bugs in that pseudocode, presumably due to them attempting
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2957 // to rename the arrays nicely rather than representing the way their actual
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2958 // implementation bounces buffers back and forth. As a result, even in the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2959 // "some formulars corrected" version, a direct implementation fails. These
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2960 // are noted below as "paper bug".
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2961
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2962 // copy and reflect spectral data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2963 for (k=0; k < n2; ++k) u[k] = buffer[k];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2964 for ( ; k < n ; ++k) u[k] = -buffer[n - k - 1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2965 // kernel from paper
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2966 // step 1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2967 for (k=k2=k4=0; k < n4; k+=1, k2+=2, k4+=4) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2968 v[n-k4-1] = (u[k4] - u[n-k4-1]) * A[k2] - (u[k4+2] - u[n-k4-3])*A[k2+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2969 v[n-k4-3] = (u[k4] - u[n-k4-1]) * A[k2+1] + (u[k4+2] - u[n-k4-3])*A[k2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2970 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2971 // step 2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2972 for (k=k4=0; k < n8; k+=1, k4+=4) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2973 w[n2+3+k4] = v[n2+3+k4] + v[k4+3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2974 w[n2+1+k4] = v[n2+1+k4] + v[k4+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2975 w[k4+3] = (v[n2+3+k4] - v[k4+3])A[n2-4-k4] - (v[n2+1+k4]-v[k4+1])A[n2-3-k4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2976 w[k4+1] = (v[n2+1+k4] - v[k4+1])A[n2-4-k4] + (v[n2+3+k4]-v[k4+3])A[n2-3-k4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2977 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2978 // step 3
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2979 ld = ilog(n) - 1; // ilog is off-by-one from normal definitions
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2980 for (l=0; l < ld-3; ++l) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2981 int k0 = n >> (l+2), k1 = 1 << (l+3);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2982 int rlim = n >> (l+4), r4, r;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2983 int s2lim = 1 << (l+2), s2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2984 for (r=r4=0; r < rlim; r4+=4,++r) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2985 for (s2=0; s2 < s2lim; s2+=2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2986 u[n-1-k0s2-r4] = w[n-1-k0s2-r4] + w[n-1-k0*(s2+1)-r4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2987 u[n-3-k0s2-r4] = w[n-3-k0s2-r4] + w[n-3-k0*(s2+1)-r4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2988 u[n-1-k0(s2+1)-r4] = (w[n-1-k0s2-r4] - w[n-1-k0(s2+1)-r4]) A[r*k1]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2989 - (w[n-3-k0s2-r4] - w[n-3-k0(s2+1)-r4]) * A[r*k1+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2990 u[n-3-k0(s2+1)-r4] = (w[n-3-k0s2-r4] - w[n-3-k0(s2+1)-r4]) A[r*k1]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2991 + (w[n-1-k0s2-r4] - w[n-1-k0(s2+1)-r4]) * A[r*k1+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2992 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2993 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2994 if (l+1 < ld-3) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2995 // paper bug: ping-ponging of u&w here is omitted
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2996 memcpy(w, u, sizeof(u));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2997 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2998 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	2999
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3000 // step 4
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3001 for (i=0; i < n8; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3002 int j = bit_reverse(i) >> (32-ld+3);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3003 assert(j < n8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3004 if (i == j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3005 // paper bug: original code probably swapped in place; if copying,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3006 // need to directly copy in this case
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3007 int i8 = i << 3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3008 v[i8+1] = u[i8+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3009 v[i8+3] = u[i8+3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3010 v[i8+5] = u[i8+5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3011 v[i8+7] = u[i8+7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3012 } else if (i < j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3013 int i8 = i << 3, j8 = j << 3;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3014 v[j8+1] = u[i8+1], v[i8+1] = u[j8 + 1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3015 v[j8+3] = u[i8+3], v[i8+3] = u[j8 + 3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3016 v[j8+5] = u[i8+5], v[i8+5] = u[j8 + 5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3017 v[j8+7] = u[i8+7], v[i8+7] = u[j8 + 7];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3018 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3019 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3020 // step 5
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3021 for (k=0; k < n2; ++k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3022 w[k] = v[k*2+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3023 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3024 // step 6
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3025 for (k=k2=k4=0; k < n8; ++k, k2 += 2, k4 += 4) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3026 u[n-1-k2] = w[k4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3027 u[n-2-k2] = w[k4+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3028 u[n3_4 - 1 - k2] = w[k4+2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3029 u[n3_4 - 2 - k2] = w[k4+3];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3030 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3031 // step 7
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3032 for (k=k2=0; k < n8; ++k, k2 += 2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3033 v[n2 + k2 ] = ( u[n2 + k2] + u[n-2-k2] + C[k2+1](u[n2+k2]-u[n-2-k2]) + C[k2](u[n2+k2+1]+u[n-2-k2+1]))/2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3034 v[n-2 - k2] = ( u[n2 + k2] + u[n-2-k2] - C[k2+1](u[n2+k2]-u[n-2-k2]) - C[k2](u[n2+k2+1]+u[n-2-k2+1]))/2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3035 v[n2+1+ k2] = ( u[n2+1+k2] - u[n-1-k2] + C[k2+1](u[n2+1+k2]+u[n-1-k2]) - C[k2](u[n2+k2]-u[n-2-k2]))/2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3036 v[n-1 - k2] = (-u[n2+1+k2] + u[n-1-k2] + C[k2+1](u[n2+1+k2]+u[n-1-k2]) - C[k2](u[n2+k2]-u[n-2-k2]))/2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3037 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3038 // step 8
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3039 for (k=k2=0; k < n4; ++k,k2 += 2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3040 X[k] = v[k2+n2]B[k2 ] + v[k2+1+n2]B[k2+1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3041 X[n2-1-k] = v[k2+n2]B[k2+1] - v[k2+1+n2]B[k2 ];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3042 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3043
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3044 // decode kernel to output
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3045 // determined the following value experimentally
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3046 // (by first figuring out what made inverse_mdct_slow work); then matching that here
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3047 // (probably vorbis encoder premultiplies by n or n/2, to save it on the decoder?)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3048 s = 0.5; // theoretically would be n4
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3049
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3050 // [[[ note! the s value of 0.5 is compensated for by the B[] in the current code,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3051 // so it needs to use the "old" B values to behave correctly, or else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3052 // set s to 1.0 ]]]
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3053 for (i=0; i < n4 ; ++i) buffer[i] = s * X[i+n4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3054 for ( ; i < n3_4; ++i) buffer[i] = -s * X[n3_4 - i - 1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3055 for ( ; i < n ; ++i) buffer[i] = -s * X[i - n3_4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3056 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3057 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3058
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3059 static float get_window(vorb f, int len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3060 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3061 len <<= 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3062 if (len == f->blocksize_0) return f->window[0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3063 if (len == f->blocksize_1) return f->window[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3064 return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3065 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3066
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3067 #ifndef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3068 typedef int16 YTYPE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3069 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3070 typedef int YTYPE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3071 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3072 static int do_floor(vorb f, Mapping map, int i, int n, float target, YTYPE finalY, uint8 *step2_flag)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3073 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3074 int n2 = n >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3075 int s = map->chan[i].mux, floor;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3076 floor = map->submap_floor[s];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3077 if (f->floor_types[floor] == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3078 return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3079 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3080 Floor1 *g = &f->floor_config[floor].floor1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3081 int j,q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3082 int lx = 0, ly = finalY[0] * g->floor1_multiplier;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3083 for (q=1; q < g->values; ++q) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3084 j = g->sorted_order[q];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3085 #ifndef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3086 STBV_NOTUSED(step2_flag);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3087 if (finalY[j] >= 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3088 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3089 if (step2_flag[j])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3090 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3091 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3092 int hy = finalY[j] * g->floor1_multiplier;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3093 int hx = g->Xlist[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3094 if (lx != hx)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3095 draw_line(target, lx,ly, hx,hy, n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3096 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3097 lx = hx, ly = hy;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3098 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3099 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3100 if (lx < n2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3101 // optimization of: draw_line(target, lx,ly, n,ly, n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3102 for (j=lx; j < n2; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3103 LINE_OP(target[j], inverse_db_table[ly]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3104 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3105 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3106 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3107 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3108 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3109
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3110 // The meaning of "left" and "right"
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3111 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3112 // For a given frame:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3113 // we compute samples from 0..n
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3114 // window_center is n/2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3115 // we'll window and mix the samples from left_start to left_end with data from the previous frame
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3116 // all of the samples from left_end to right_start can be output without mixing; however,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3117 // this interval is 0-length except when transitioning between short and long frames
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3118 // all of the samples from right_start to right_end need to be mixed with the next frame,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3119 // which we don't have, so those get saved in a buffer
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3120 // frame N's right_end-right_start, the number of samples to mix with the next frame,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3121 // has to be the same as frame N+1's left_end-left_start (which they are by
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3122 // construction)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3123
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3124 static int vorbis_decode_initial(vorb f, int p_left_start, int p_left_end, int p_right_start, int p_right_end, int mode)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3125 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3126 Mode *m;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3127 int i, n, prev, next, window_center;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3128 f->channel_buffer_start = f->channel_buffer_end = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3129
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3130 retry:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3131 if (f->eof) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3132 if (!maybe_start_packet(f))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3133 return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3134 // check packet type
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3135 if (get_bits(f,1) != 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3136 if (IS_PUSH_MODE(f))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3137 return error(f,VORBIS_bad_packet_type);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3138 while (EOP != get8_packet(f));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3139 goto retry;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3140 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3141
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3142 if (f->alloc.alloc_buffer)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3143 assert(f->alloc.alloc_buffer_length_in_bytes == f->temp_offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3144
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3145 i = get_bits(f, ilog(f->mode_count-1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3146 if (i == EOP) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3147 if (i >= f->mode_count) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3148 *mode = i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3149 m = f->mode_config + i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3150 if (m->blockflag) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3151 n = f->blocksize_1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3152 prev = get_bits(f,1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3153 next = get_bits(f,1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3154 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3155 prev = next = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3156 n = f->blocksize_0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3157 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3158
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3159 // WINDOWING
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3160
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3161 window_center = n >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3162 if (m->blockflag && !prev) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3163 *p_left_start = (n - f->blocksize_0) >> 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3164 *p_left_end = (n + f->blocksize_0) >> 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3165 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3166 *p_left_start = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3167 *p_left_end = window_center;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3168 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3169 if (m->blockflag && !next) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3170 p_right_start = (n3 - f->blocksize_0) >> 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3171 p_right_end = (n3 + f->blocksize_0) >> 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3172 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3173 *p_right_start = window_center;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3174 *p_right_end = n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3175 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3176
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3177 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3178 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3179
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3180 static int vorbis_decode_packet_rest(vorb f, int len, Mode m, int left_start, int left_end, int right_start, int right_end, int p_left)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3181 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3182 Mapping *map;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3183 int i,j,k,n,n2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3184 int zero_channel[256];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3185 int really_zero_channel[256];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3186
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3187 // WINDOWING
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3188
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3189 STBV_NOTUSED(left_end);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3190 n = f->blocksize[m->blockflag];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3191 map = &f->mapping[m->mapping];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3192
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3193 // FLOORS
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3194 n2 = n >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3195
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3196 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3197
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3198 for (i=0; i < f->channels; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3199 int s = map->chan[i].mux, floor;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3200 zero_channel[i] = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3201 floor = map->submap_floor[s];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3202 if (f->floor_types[floor] == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3203 return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3204 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3205 Floor1 *g = &f->floor_config[floor].floor1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3206 if (get_bits(f, 1)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3207 short *finalY;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3208 uint8 step2_flag[256];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3209 static int range_list[4] = { 256, 128, 86, 64 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3210 int range = range_list[g->floor1_multiplier-1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3211 int offset = 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3212 finalY = f->finalY[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3213 finalY[0] = get_bits(f, ilog(range)-1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3214 finalY[1] = get_bits(f, ilog(range)-1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3215 for (j=0; j < g->partitions; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3216 int pclass = g->partition_class_list[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3217 int cdim = g->class_dimensions[pclass];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3218 int cbits = g->class_subclasses[pclass];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3219 int csub = (1 << cbits)-1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3220 int cval = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3221 if (cbits) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3222 Codebook *c = f->codebooks + g->class_masterbooks[pclass];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3223 DECODE(cval,f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3224 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3225 for (k=0; k < cdim; ++k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3226 int book = g->subclass_books[pclass][cval & csub];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3227 cval = cval >> cbits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3228 if (book >= 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3229 int temp;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3230 Codebook *c = f->codebooks + book;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3231 DECODE(temp,f,c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3232 finalY[offset++] = temp;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3233 } else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3234 finalY[offset++] = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3235 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3236 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3237 if (f->valid_bits == INVALID_BITS) goto error; // behavior according to spec
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3238 step2_flag[0] = step2_flag[1] = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3239 for (j=2; j < g->values; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3240 int low, high, pred, highroom, lowroom, room, val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3241 low = g->neighbors[j][0];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3242 high = g->neighbors[j][1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3243 //neighbors(g->Xlist, j, &low, &high);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3244 pred = predict_point(g->Xlist[j], g->Xlist[low], g->Xlist[high], finalY[low], finalY[high]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3245 val = finalY[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3246 highroom = range - pred;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3247 lowroom = pred;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3248 if (highroom < lowroom)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3249 room = highroom * 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3250 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3251 room = lowroom * 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3252 if (val) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3253 step2_flag[low] = step2_flag[high] = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3254 step2_flag[j] = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3255 if (val >= room)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3256 if (highroom > lowroom)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3257 finalY[j] = val - lowroom + pred;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3258 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3259 finalY[j] = pred - val + highroom - 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3260 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3261 if (val & 1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3262 finalY[j] = pred - ((val+1)>>1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3263 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3264 finalY[j] = pred + (val>>1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3265 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3266 step2_flag[j] = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3267 finalY[j] = pred;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3268 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3269 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3270
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3271 #ifdef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3272 do_floor(f, map, i, n, f->floor_buffers[i], finalY, step2_flag);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3273 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3274 // defer final floor computation until _after_ residue
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3275 for (j=0; j < g->values; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3276 if (!step2_flag[j])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3277 finalY[j] = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3278 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3279 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3280 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3281 error:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3282 zero_channel[i] = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3283 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3284 // So we just defer everything else to later
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3285
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3286 // at this point we've decoded the floor into buffer
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3287 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3288 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3289 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3290 // at this point we've decoded all floors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3291
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3292 if (f->alloc.alloc_buffer)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3293 assert(f->alloc.alloc_buffer_length_in_bytes == f->temp_offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3294
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3295 // re-enable coupled channels if necessary
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3296 memcpy(really_zero_channel, zero_channel, sizeof(really_zero_channel[0]) * f->channels);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3297 for (i=0; i < map->coupling_steps; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3298 if (!zero_channel[map->chan[i].magnitude] \|\| !zero_channel[map->chan[i].angle]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3299 zero_channel[map->chan[i].magnitude] = zero_channel[map->chan[i].angle] = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3300 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3301
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3302 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3303 // RESIDUE DECODE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3304 for (i=0; i < map->submaps; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3305 float *residue_buffers[STB_VORBIS_MAX_CHANNELS];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3306 int r;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3307 uint8 do_not_decode[256];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3308 int ch = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3309 for (j=0; j < f->channels; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3310 if (map->chan[j].mux == i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3311 if (zero_channel[j]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3312 do_not_decode[ch] = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3313 residue_buffers[ch] = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3314 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3315 do_not_decode[ch] = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3316 residue_buffers[ch] = f->channel_buffers[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3317 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3318 ++ch;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3319 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3320 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3321 r = map->submap_residue[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3322 decode_residue(f, residue_buffers, ch, n2, r, do_not_decode);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3323 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3324
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3325 if (f->alloc.alloc_buffer)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3326 assert(f->alloc.alloc_buffer_length_in_bytes == f->temp_offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3327 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3328
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3329 // INVERSE COUPLING
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3330 for (i = map->coupling_steps-1; i >= 0; --i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3331 int n2 = n >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3332 float *m = f->channel_buffers[map->chan[i].magnitude];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3333 float *a = f->channel_buffers[map->chan[i].angle ];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3334 for (j=0; j < n2; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3335 float a2,m2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3336 if (m[j] > 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3337 if (a[j] > 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3338 m2 = m[j], a2 = m[j] - a[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3339 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3340 a2 = m[j], m2 = m[j] + a[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3341 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3342 if (a[j] > 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3343 m2 = m[j], a2 = m[j] + a[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3344 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3345 a2 = m[j], m2 = m[j] - a[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3346 m[j] = m2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3347 a[j] = a2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3348 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3349 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3350 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3351
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3352 // finish decoding the floors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3353 #ifndef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3354 for (i=0; i < f->channels; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3355 if (really_zero_channel[i]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3356 memset(f->channel_buffers[i], 0, sizeof(f->channel_buffers[i]) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3357 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3358 do_floor(f, map, i, n, f->channel_buffers[i], f->finalY[i], NULL);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3359 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3360 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3361 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3362 for (i=0; i < f->channels; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3363 if (really_zero_channel[i]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3364 memset(f->channel_buffers[i], 0, sizeof(f->channel_buffers[i]) n2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3365 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3366 for (j=0; j < n2; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3367 f->channel_buffers[i][j] *= f->floor_buffers[i][j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3368 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3369 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3370 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3371
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3372 // INVERSE MDCT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3373 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3374 for (i=0; i < f->channels; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3375 inverse_mdct(f->channel_buffers[i], n, f, m->blockflag);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3376 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3377
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3378 // this shouldn't be necessary, unless we exited on an error
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3379 // and want to flush to get to the next packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3380 flush_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3381
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3382 if (f->first_decode) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3383 // assume we start so first non-discarded sample is sample 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3384 // this isn't to spec, but spec would require us to read ahead
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3385 // and decode the size of all current frames--could be done,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3386 // but presumably it's not a commonly used feature
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3387 f->current_loc = 0u - n2; // start of first frame is positioned for discard (NB this is an intentional unsigned overflow/wrap-around)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3388 // we might have to discard samples "from" the next frame too,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3389 // if we're lapping a large block then a small at the start?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3390 f->discard_samples_deferred = n - right_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3391 f->current_loc_valid = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3392 f->first_decode = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3393 } else if (f->discard_samples_deferred) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3394 if (f->discard_samples_deferred >= right_start - left_start) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3395 f->discard_samples_deferred -= (right_start - left_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3396 left_start = right_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3397 *p_left = left_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3398 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3399 left_start += f->discard_samples_deferred;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3400 *p_left = left_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3401 f->discard_samples_deferred = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3402 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3403 } else if (f->previous_length == 0 && f->current_loc_valid) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3404 // we're recovering from a seek... that means we're going to discard
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3405 // the samples from this packet even though we know our position from
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3406 // the last page header, so we need to update the position based on
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3407 // the discarded samples here
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3408 // but wait, the code below is going to add this in itself even
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3409 // on a discard, so we don't need to do it here...
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3410 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3411
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3412 // check if we have ogg information about the sample # for this packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3413 if (f->last_seg_which == f->end_seg_with_known_loc) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3414 // if we have a valid current loc, and this is final:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3415 if (f->current_loc_valid && (f->page_flag & PAGEFLAG_last_page)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3416 uint32 current_end = f->known_loc_for_packet;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3417 // then let's infer the size of the (probably) short final frame
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3418 if (current_end < f->current_loc + (right_end-left_start)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3419 if (current_end < f->current_loc) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3420 // negative truncation, that's impossible!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3421 *len = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3422 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3423 *len = current_end - f->current_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3424 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3425 *len += left_start; // this doesn't seem right, but has no ill effect on my test files
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3426 if (len > right_end) len = right_end; // this should never happen
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3427 f->current_loc += *len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3428 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3429 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3430 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3431 // otherwise, just set our sample loc
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3432 // guess that the ogg granule pos refers to the _middle_ of the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3433 // last frame?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3434 // set f->current_loc to the position of left_start
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3435 f->current_loc = f->known_loc_for_packet - (n2-left_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3436 f->current_loc_valid = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3437 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3438 if (f->current_loc_valid)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3439 f->current_loc += (right_start - left_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3440
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3441 if (f->alloc.alloc_buffer)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3442 assert(f->alloc.alloc_buffer_length_in_bytes == f->temp_offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3443 *len = right_end; // ignore samples after the window goes to 0
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3444 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3445
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3446 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3447 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3448
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3449 static int vorbis_decode_packet(vorb f, int len, int p_left, int p_right)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3450 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3451 int mode, left_end, right_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3452 if (!vorbis_decode_initial(f, p_left, &left_end, p_right, &right_end, &mode)) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3453 return vorbis_decode_packet_rest(f, len, f->mode_config + mode, p_left, left_end, p_right, right_end, p_left);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3454 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3455
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3456 static int vorbis_finish_frame(stb_vorbis *f, int len, int left, int right)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3457 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3458 int prev,i,j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3459 // we use right&left (the start of the right- and left-window sin()-regions)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3460 // to determine how much to return, rather than inferring from the rules
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3461 // (same result, clearer code); 'left' indicates where our sin() window
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3462 // starts, therefore where the previous window's right edge starts, and
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3463 // therefore where to start mixing from the previous buffer. 'right'
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3464 // indicates where our sin() ending-window starts, therefore that's where
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3465 // we start saving, and where our returned-data ends.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3466
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3467 // mixin from previous window
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3468 if (f->previous_length) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3469 int i,j, n = f->previous_length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3470 float *w = get_window(f, n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3471 if (w == NULL) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3472 for (i=0; i < f->channels; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3473 for (j=0; j < n; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3474 f->channel_buffers[i][left+j] =
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3475 f->channel_buffers[i][left+j]*w[ j] +
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3476 f->previous_window[i][ j]*w[n-1-j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3477 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3478 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3479
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3480 prev = f->previous_length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3481
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3482 // last half of this data becomes previous window
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3483 f->previous_length = len - right;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3484
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3485 // @OPTIMIZE: could avoid this copy by double-buffering the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3486 // output (flipping previous_window with channel_buffers), but
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3487 // then previous_window would have to be 2x as large, and
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3488 // channel_buffers couldn't be temp mem (although they're NOT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3489 // currently temp mem, they could be (unless we want to level
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3490 // performance by spreading out the computation))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3491 for (i=0; i < f->channels; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3492 for (j=0; right+j < len; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3493 f->previous_window[i][j] = f->channel_buffers[i][right+j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3494
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3495 if (!prev)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3496 // there was no previous packet, so this data isn't valid...
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3497 // this isn't entirely true, only the would-have-overlapped data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3498 // isn't valid, but this seems to be what the spec requires
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3499 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3500
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3501 // truncate a short frame
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3502 if (len < right) right = len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3503
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3504 f->samples_output += right-left;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3505
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3506 return right - left;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3507 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3508
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3509 static int vorbis_pump_first_frame(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3510 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3511 int len, right, left, res;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3512 res = vorbis_decode_packet(f, &len, &left, &right);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3513 if (res)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3514 vorbis_finish_frame(f, len, left, right);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3515 return res;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3516 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3517
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3518 #ifndef STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3519 static int is_whole_packet_present(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3520 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3521 // make sure that we have the packet available before continuing...
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3522 // this requires a full ogg parse, but we know we can fetch from f->stream
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3523
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3524 // instead of coding this out explicitly, we could save the current read state,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3525 // read the next packet with get8() until end-of-packet, check f->eof, then
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3526 // reset the state? but that would be slower, esp. since we'd have over 256 bytes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3527 // of state to restore (primarily the page segment table)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3528
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3529 int s = f->next_seg, first = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3530 uint8 *p = f->stream;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3531
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3532 if (s != -1) { // if we're not starting the packet with a 'continue on next page' flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3533 for (; s < f->segment_count; ++s) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3534 p += f->segments[s];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3535 if (f->segments[s] < 255) // stop at first short segment
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3536 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3537 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3538 // either this continues, or it ends it...
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3539 if (s == f->segment_count)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3540 s = -1; // set 'crosses page' flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3541 if (p > f->stream_end) return error(f, VORBIS_need_more_data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3542 first = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3543 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3544 for (; s == -1;) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3545 uint8 *q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3546 int n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3547
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3548 // check that we have the page header ready
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3549 if (p + 26 >= f->stream_end) return error(f, VORBIS_need_more_data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3550 // validate the page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3551 if (memcmp(p, ogg_page_header, 4)) return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3552 if (p[4] != 0) return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3553 if (first) { // the first segment must NOT have 'continued_packet', later ones MUST
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3554 if (f->previous_length)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3555 if ((p[5] & PAGEFLAG_continued_packet)) return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3556 // if no previous length, we're resynching, so we can come in on a continued-packet,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3557 // which we'll just drop
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3558 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3559 if (!(p[5] & PAGEFLAG_continued_packet)) return error(f, VORBIS_invalid_stream);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3560 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3561 n = p[26]; // segment counts
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3562 q = p+27; // q points to segment table
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3563 p = q + n; // advance past header
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3564 // make sure we've read the segment table
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3565 if (p > f->stream_end) return error(f, VORBIS_need_more_data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3566 for (s=0; s < n; ++s) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3567 p += q[s];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3568 if (q[s] < 255)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3569 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3570 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3571 if (s == n)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3572 s = -1; // set 'crosses page' flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3573 if (p > f->stream_end) return error(f, VORBIS_need_more_data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3574 first = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3575 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3576 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3577 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3578 #endif // !STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3579
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3580 static int start_decoder(vorb *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3581 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3582 uint8 header[6], x,y;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3583 int len,i,j,k, max_submaps = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3584 int longest_floorlist=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3585
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3586 // first page, first packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3587 f->first_decode = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3588
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3589 if (!start_page(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3590 // validate page flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3591 if (!(f->page_flag & PAGEFLAG_first_page)) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3592 if (f->page_flag & PAGEFLAG_last_page) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3593 if (f->page_flag & PAGEFLAG_continued_packet) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3594 // check for expected packet length
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3595 if (f->segment_count != 1) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3596 if (f->segments[0] != 30) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3597 // check for the Ogg skeleton fishead identifying header to refine our error
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3598 if (f->segments[0] == 64 &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3599 getn(f, header, 6) &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3600 header[0] == 'f' &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3601 header[1] == 'i' &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3602 header[2] == 's' &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3603 header[3] == 'h' &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3604 header[4] == 'e' &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3605 header[5] == 'a' &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3606 get8(f) == 'd' &&
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3607 get8(f) == '\0') return error(f, VORBIS_ogg_skeleton_not_supported);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3608 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3609 return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3610 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3611
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3612 // read packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3613 // check packet header
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3614 if (get8(f) != VORBIS_packet_id) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3615 if (!getn(f, header, 6)) return error(f, VORBIS_unexpected_eof);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3616 if (!vorbis_validate(header)) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3617 // vorbis_version
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3618 if (get32(f) != 0) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3619 f->channels = get8(f); if (!f->channels) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3620 if (f->channels > STB_VORBIS_MAX_CHANNELS) return error(f, VORBIS_too_many_channels);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3621 f->sample_rate = get32(f); if (!f->sample_rate) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3622 get32(f); // bitrate_maximum
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3623 get32(f); // bitrate_nominal
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3624 get32(f); // bitrate_minimum
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3625 x = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3626 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3627 int log0,log1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3628 log0 = x & 15;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3629 log1 = x >> 4;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3630 f->blocksize_0 = 1 << log0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3631 f->blocksize_1 = 1 << log1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3632 if (log0 < 6 \|\| log0 > 13) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3633 if (log1 < 6 \|\| log1 > 13) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3634 if (log0 > log1) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3635 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3636
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3637 // framing_flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3638 x = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3639 if (!(x & 1)) return error(f, VORBIS_invalid_first_page);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3640
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3641 // second packet!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3642 if (!start_page(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3643
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3644 if (!start_packet(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3645
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3646 if (!next_segment(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3647
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3648 if (get8_packet(f) != VORBIS_packet_comment) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3649 for (i=0; i < 6; ++i) header[i] = get8_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3650 if (!vorbis_validate(header)) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3651 //file vendor
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3652 len = get32_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3653 f->vendor = (char)setup_malloc(f, sizeof(char) (len+1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3654 if (f->vendor == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3655 for(i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3656 f->vendor[i] = get8_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3657 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3658 f->vendor[len] = (char)'\0';
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3659 //user comments
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3660 f->comment_list_length = get32_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3661 f->comment_list = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3662 if (f->comment_list_length > 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3663 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3664 f->comment_list = (char*) setup_malloc(f, sizeof(char) * (f->comment_list_length));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3665 if (f->comment_list == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3666 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3667
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3668 for(i=0; i < f->comment_list_length; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3669 len = get32_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3670 f->comment_list[i] = (char)setup_malloc(f, sizeof(char) (len+1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3671 if (f->comment_list[i] == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3672
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3673 for(j=0; j < len; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3674 f->comment_list[i][j] = get8_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3675 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3676 f->comment_list[i][len] = (char)'\0';
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3677 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3678
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3679 // framing_flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3680 x = get8_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3681 if (!(x & 1)) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3682
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3683
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3684 skip(f, f->bytes_in_seg);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3685 f->bytes_in_seg = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3686
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3687 do {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3688 len = next_segment(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3689 skip(f, len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3690 f->bytes_in_seg = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3691 } while (len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3692
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3693 // third packet!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3694 if (!start_packet(f)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3695
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3696 #ifndef STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3697 if (IS_PUSH_MODE(f)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3698 if (!is_whole_packet_present(f)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3699 // convert error in ogg header to write type
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3700 if (f->error == VORBIS_invalid_stream)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3701 f->error = VORBIS_invalid_setup;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3702 return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3703 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3704 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3705 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3706
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3707 crc32_init(); // always init it, to avoid multithread race conditions
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3708
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3709 if (get8_packet(f) != VORBIS_packet_setup) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3710 for (i=0; i < 6; ++i) header[i] = get8_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3711 if (!vorbis_validate(header)) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3712
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3713 // codebooks
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3714
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3715 f->codebook_count = get_bits(f,8) + 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3716 f->codebooks = (Codebook ) setup_malloc(f, sizeof(f->codebooks) * f->codebook_count);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3717 if (f->codebooks == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3718 memset(f->codebooks, 0, sizeof(f->codebooks) f->codebook_count);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3719 for (i=0; i < f->codebook_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3720 uint32 *values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3721 int ordered, sorted_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3722 int total=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3723 uint8 *lengths;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3724 Codebook *c = f->codebooks+i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3725 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3726 x = get_bits(f, 8); if (x != 0x42) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3727 x = get_bits(f, 8); if (x != 0x43) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3728 x = get_bits(f, 8); if (x != 0x56) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3729 x = get_bits(f, 8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3730 c->dimensions = (get_bits(f, 8)<<8) + x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3731 x = get_bits(f, 8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3732 y = get_bits(f, 8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3733 c->entries = (get_bits(f, 8)<<16) + (y<<8) + x;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3734 ordered = get_bits(f,1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3735 c->sparse = ordered ? 0 : get_bits(f,1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3736
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3737 if (c->dimensions == 0 && c->entries != 0) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3738
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3739 if (c->sparse)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3740 lengths = (uint8 *) setup_temp_malloc(f, c->entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3741 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3742 lengths = c->codeword_lengths = (uint8 *) setup_malloc(f, c->entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3743
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3744 if (!lengths) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3745
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3746 if (ordered) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3747 int current_entry = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3748 int current_length = get_bits(f,5) + 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3749 while (current_entry < c->entries) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3750 int limit = c->entries - current_entry;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3751 int n = get_bits(f, ilog(limit));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3752 if (current_length >= 32) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3753 if (current_entry + n > (int) c->entries) { return error(f, VORBIS_invalid_setup); }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3754 memset(lengths + current_entry, current_length, n);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3755 current_entry += n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3756 ++current_length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3757 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3758 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3759 for (j=0; j < c->entries; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3760 int present = c->sparse ? get_bits(f,1) : 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3761 if (present) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3762 lengths[j] = get_bits(f, 5) + 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3763 ++total;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3764 if (lengths[j] == 32)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3765 return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3766 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3767 lengths[j] = NO_CODE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3768 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3769 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3770 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3771
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3772 if (c->sparse && total >= c->entries >> 2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3773 // convert sparse items to non-sparse!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3774 if (c->entries > (int) f->setup_temp_memory_required)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3775 f->setup_temp_memory_required = c->entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3776
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3777 c->codeword_lengths = (uint8 *) setup_malloc(f, c->entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3778 if (c->codeword_lengths == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3779 memcpy(c->codeword_lengths, lengths, c->entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3780 setup_temp_free(f, lengths, c->entries); // note this is only safe if there have been no intervening temp mallocs!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3781 lengths = c->codeword_lengths;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3782 c->sparse = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3783 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3784
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3785 // compute the size of the sorted tables
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3786 if (c->sparse) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3787 sorted_count = total;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3788 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3789 sorted_count = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3790 #ifndef STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3791 for (j=0; j < c->entries; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3792 if (lengths[j] > STB_VORBIS_FAST_HUFFMAN_LENGTH && lengths[j] != NO_CODE)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3793 ++sorted_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3794 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3795 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3796
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3797 c->sorted_entries = sorted_count;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3798 values = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3799
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3800 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3801 if (!c->sparse) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3802 c->codewords = (uint32 ) setup_malloc(f, sizeof(c->codewords[0]) c->entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3803 if (!c->codewords) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3804 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3805 unsigned int size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3806 if (c->sorted_entries) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3807 c->codeword_lengths = (uint8 *) setup_malloc(f, c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3808 if (!c->codeword_lengths) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3809 c->codewords = (uint32 ) setup_temp_malloc(f, sizeof(c->codewords) * c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3810 if (!c->codewords) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3811 values = (uint32 ) setup_temp_malloc(f, sizeof(values) * c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3812 if (!values) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3813 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3814 size = c->entries + (sizeof(c->codewords) + sizeof(values)) * c->sorted_entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3815 if (size > f->setup_temp_memory_required)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3816 f->setup_temp_memory_required = size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3817 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3818
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3819 if (!compute_codewords(c, lengths, c->entries, values)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3820 if (c->sparse) setup_temp_free(f, values, 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3821 return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3822 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3823
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3824 if (c->sorted_entries) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3825 // allocate an extra slot for sentinels
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3826 c->sorted_codewords = (uint32 ) setup_malloc(f, sizeof(c->sorted_codewords) * (c->sorted_entries+1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3827 if (c->sorted_codewords == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3828 // allocate an extra slot at the front so that c->sorted_values[-1] is defined
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3829 // so that we can catch that case without an extra if
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3830 c->sorted_values = ( int ) setup_malloc(f, sizeof(c->sorted_values ) * (c->sorted_entries+1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3831 if (c->sorted_values == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3832 ++c->sorted_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3833 c->sorted_values[-1] = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3834 compute_sorted_huffman(c, lengths, values);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3835 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3836
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3837 if (c->sparse) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3838 setup_temp_free(f, values, sizeof(values)c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3839 setup_temp_free(f, c->codewords, sizeof(c->codewords)c->sorted_entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3840 setup_temp_free(f, lengths, c->entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3841 c->codewords = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3842 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3843
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3844 compute_accelerated_huffman(c);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3845
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3846 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3847 c->lookup_type = get_bits(f, 4);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3848 if (c->lookup_type > 2) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3849 if (c->lookup_type > 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3850 uint16 *mults;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3851 c->minimum_value = float32_unpack(get_bits(f, 32));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3852 c->delta_value = float32_unpack(get_bits(f, 32));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3853 c->value_bits = get_bits(f, 4)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3854 c->sequence_p = get_bits(f,1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3855 if (c->lookup_type == 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3856 int values = lookup1_values(c->entries, c->dimensions);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3857 if (values < 0) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3858 c->lookup_values = (uint32) values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3859 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3860 c->lookup_values = c->entries * c->dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3861 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3862 if (c->lookup_values == 0) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3863 mults = (uint16 ) setup_temp_malloc(f, sizeof(mults[0]) c->lookup_values);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3864 if (mults == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3865 for (j=0; j < (int) c->lookup_values; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3866 int q = get_bits(f, c->value_bits);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3867 if (q == EOP) { setup_temp_free(f,mults,sizeof(mults[0])*c->lookup_values); return error(f, VORBIS_invalid_setup); }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3868 mults[j] = q;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3869 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3870
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3871 #ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3872 if (c->lookup_type == 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3873 int len, sparse = c->sparse;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3874 float last=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3875 // pre-expand the lookup1-style multiplicands, to avoid a divide in the inner loop
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3876 if (sparse) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3877 if (c->sorted_entries == 0) goto skip;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3878 c->multiplicands = (codetype ) setup_malloc(f, sizeof(c->multiplicands[0]) c->sorted_entries * c->dimensions);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3879 } else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3880 c->multiplicands = (codetype ) setup_malloc(f, sizeof(c->multiplicands[0]) c->entries * c->dimensions);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3881 if (c->multiplicands == NULL) { setup_temp_free(f,mults,sizeof(mults[0])*c->lookup_values); return error(f, VORBIS_outofmem); }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3882 len = sparse ? c->sorted_entries : c->entries;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3883 for (j=0; j < len; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3884 unsigned int z = sparse ? c->sorted_values[j] : j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3885 unsigned int div=1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3886 for (k=0; k < c->dimensions; ++k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3887 int off = (z / div) % c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3888 float val = mults[off]*c->delta_value + c->minimum_value + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3889 c->multiplicands[j*c->dimensions + k] = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3890 if (c->sequence_p)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3891 last = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3892 if (k+1 < c->dimensions) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3893 if (div > UINT_MAX / (unsigned int) c->lookup_values) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3894 setup_temp_free(f, mults,sizeof(mults[0])*c->lookup_values);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3895 return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3896 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3897 div *= c->lookup_values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3898 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3899 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3900 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3901 c->lookup_type = 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3902 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3903 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3904 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3905 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3906 float last=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3907 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3908 c->multiplicands = (codetype ) setup_malloc(f, sizeof(c->multiplicands[0]) c->lookup_values);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3909 if (c->multiplicands == NULL) { setup_temp_free(f, mults,sizeof(mults[0])*c->lookup_values); return error(f, VORBIS_outofmem); }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3910 for (j=0; j < (int) c->lookup_values; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3911 float val = mults[j] * c->delta_value + c->minimum_value + last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3912 c->multiplicands[j] = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3913 if (c->sequence_p)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3914 last = val;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3915 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3916 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3917 #ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3918 skip:;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3919 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3920 setup_temp_free(f, mults, sizeof(mults[0])*c->lookup_values);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3921
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3922 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3923 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3924 CHECK(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3925 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3926
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3927 // time domain transfers (notused)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3928
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3929 x = get_bits(f, 6) + 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3930 for (i=0; i < x; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3931 uint32 z = get_bits(f, 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3932 if (z != 0) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3933 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3934
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3935 // Floors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3936 f->floor_count = get_bits(f, 6)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3937 f->floor_config = (Floor ) setup_malloc(f, f->floor_count sizeof(*f->floor_config));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3938 if (f->floor_config == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3939 for (i=0; i < f->floor_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3940 f->floor_types[i] = get_bits(f, 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3941 if (f->floor_types[i] > 1) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3942 if (f->floor_types[i] == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3943 Floor0 *g = &f->floor_config[i].floor0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3944 g->order = get_bits(f,8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3945 g->rate = get_bits(f,16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3946 g->bark_map_size = get_bits(f,16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3947 g->amplitude_bits = get_bits(f,6);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3948 g->amplitude_offset = get_bits(f,8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3949 g->number_of_books = get_bits(f,4) + 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3950 for (j=0; j < g->number_of_books; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3951 g->book_list[j] = get_bits(f,8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3952 return error(f, VORBIS_feature_not_supported);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3953 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3954 stbv__floor_ordering p[31*8+2];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3955 Floor1 *g = &f->floor_config[i].floor1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3956 int max_class = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3957 g->partitions = get_bits(f, 5);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3958 for (j=0; j < g->partitions; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3959 g->partition_class_list[j] = get_bits(f, 4);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3960 if (g->partition_class_list[j] > max_class)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3961 max_class = g->partition_class_list[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3962 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3963 for (j=0; j <= max_class; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3964 g->class_dimensions[j] = get_bits(f, 3)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3965 g->class_subclasses[j] = get_bits(f, 2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3966 if (g->class_subclasses[j]) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3967 g->class_masterbooks[j] = get_bits(f, 8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3968 if (g->class_masterbooks[j] >= f->codebook_count) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3969 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3970 for (k=0; k < 1 << g->class_subclasses[j]; ++k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3971 g->subclass_books[j][k] = (int16)get_bits(f,8)-1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3972 if (g->subclass_books[j][k] >= f->codebook_count) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3973 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3974 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3975 g->floor1_multiplier = get_bits(f,2)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3976 g->rangebits = get_bits(f,4);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3977 g->Xlist[0] = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3978 g->Xlist[1] = 1 << g->rangebits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3979 g->values = 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3980 for (j=0; j < g->partitions; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3981 int c = g->partition_class_list[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3982 for (k=0; k < g->class_dimensions[c]; ++k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3983 g->Xlist[g->values] = get_bits(f, g->rangebits);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3984 ++g->values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3985 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3986 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3987 // precompute the sorting
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3988 for (j=0; j < g->values; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3989 p[j].x = g->Xlist[j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3990 p[j].id = j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3991 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3992 qsort(p, g->values, sizeof(p[0]), point_compare);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3993 for (j=0; j < g->values-1; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3994 if (p[j].x == p[j+1].x)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3995 return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3996 for (j=0; j < g->values; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3997 g->sorted_order[j] = (uint8) p[j].id;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3998 // precompute the neighbors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	3999 for (j=2; j < g->values; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4000 int low = 0,hi = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4001 neighbors(g->Xlist, j, &low,&hi);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4002 g->neighbors[j][0] = low;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4003 g->neighbors[j][1] = hi;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4004 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4005
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4006 if (g->values > longest_floorlist)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4007 longest_floorlist = g->values;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4008 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4009 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4010
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4011 // Residue
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4012 f->residue_count = get_bits(f, 6)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4013 f->residue_config = (Residue ) setup_malloc(f, f->residue_count sizeof(f->residue_config[0]));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4014 if (f->residue_config == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4015 memset(f->residue_config, 0, f->residue_count * sizeof(f->residue_config[0]));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4016 for (i=0; i < f->residue_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4017 uint8 residue_cascade[64];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4018 Residue *r = f->residue_config+i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4019 f->residue_types[i] = get_bits(f, 16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4020 if (f->residue_types[i] > 2) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4021 r->begin = get_bits(f, 24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4022 r->end = get_bits(f, 24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4023 if (r->end < r->begin) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4024 r->part_size = get_bits(f,24)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4025 r->classifications = get_bits(f,6)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4026 r->classbook = get_bits(f,8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4027 if (r->classbook >= f->codebook_count) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4028 for (j=0; j < r->classifications; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4029 uint8 high_bits=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4030 uint8 low_bits=get_bits(f,3);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4031 if (get_bits(f,1))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4032 high_bits = get_bits(f,5);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4033 residue_cascade[j] = high_bits*8 + low_bits;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4034 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4035 r->residue_books = (short ()[8]) setup_malloc(f, sizeof(r->residue_books[0]) r->classifications);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4036 if (r->residue_books == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4037 for (j=0; j < r->classifications; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4038 for (k=0; k < 8; ++k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4039 if (residue_cascade[j] & (1 << k)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4040 r->residue_books[j][k] = get_bits(f, 8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4041 if (r->residue_books[j][k] >= f->codebook_count) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4042 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4043 r->residue_books[j][k] = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4044 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4045 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4046 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4047 // precompute the classifications[] array to avoid inner-loop mod/divide
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4048 // call it 'classdata' since we already have r->classifications
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4049 r->classdata = (uint8 *) setup_malloc(f, sizeof(r->classdata) * f->codebooks[r->classbook].entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4050 if (!r->classdata) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4051 memset(r->classdata, 0, sizeof(r->classdata) f->codebooks[r->classbook].entries);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4052 for (j=0; j < f->codebooks[r->classbook].entries; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4053 int classwords = f->codebooks[r->classbook].dimensions;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4054 int temp = j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4055 r->classdata[j] = (uint8 ) setup_malloc(f, sizeof(r->classdata[j][0]) classwords);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4056 if (r->classdata[j] == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4057 for (k=classwords-1; k >= 0; --k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4058 r->classdata[j][k] = temp % r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4059 temp /= r->classifications;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4060 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4061 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4062 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4063
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4064 f->mapping_count = get_bits(f,6)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4065 f->mapping = (Mapping ) setup_malloc(f, f->mapping_count sizeof(*f->mapping));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4066 if (f->mapping == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4067 memset(f->mapping, 0, f->mapping_count * sizeof(*f->mapping));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4068 for (i=0; i < f->mapping_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4069 Mapping *m = f->mapping + i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4070 int mapping_type = get_bits(f,16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4071 if (mapping_type != 0) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4072 m->chan = (MappingChannel ) setup_malloc(f, f->channels sizeof(*m->chan));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4073 if (m->chan == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4074 if (get_bits(f,1))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4075 m->submaps = get_bits(f,4)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4076 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4077 m->submaps = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4078 if (m->submaps > max_submaps)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4079 max_submaps = m->submaps;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4080 if (get_bits(f,1)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4081 m->coupling_steps = get_bits(f,8)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4082 if (m->coupling_steps > f->channels) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4083 for (k=0; k < m->coupling_steps; ++k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4084 m->chan[k].magnitude = get_bits(f, ilog(f->channels-1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4085 m->chan[k].angle = get_bits(f, ilog(f->channels-1));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4086 if (m->chan[k].magnitude >= f->channels) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4087 if (m->chan[k].angle >= f->channels) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4088 if (m->chan[k].magnitude == m->chan[k].angle) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4089 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4090 } else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4091 m->coupling_steps = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4092
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4093 // reserved field
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4094 if (get_bits(f,2)) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4095 if (m->submaps > 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4096 for (j=0; j < f->channels; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4097 m->chan[j].mux = get_bits(f, 4);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4098 if (m->chan[j].mux >= m->submaps) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4099 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4100 } else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4101 // @SPECIFICATION: this case is missing from the spec
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4102 for (j=0; j < f->channels; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4103 m->chan[j].mux = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4104
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4105 for (j=0; j < m->submaps; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4106 get_bits(f,8); // discard
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4107 m->submap_floor[j] = get_bits(f,8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4108 m->submap_residue[j] = get_bits(f,8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4109 if (m->submap_floor[j] >= f->floor_count) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4110 if (m->submap_residue[j] >= f->residue_count) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4111 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4112 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4113
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4114 // Modes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4115 f->mode_count = get_bits(f, 6)+1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4116 for (i=0; i < f->mode_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4117 Mode *m = f->mode_config+i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4118 m->blockflag = get_bits(f,1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4119 m->windowtype = get_bits(f,16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4120 m->transformtype = get_bits(f,16);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4121 m->mapping = get_bits(f,8);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4122 if (m->windowtype != 0) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4123 if (m->transformtype != 0) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4124 if (m->mapping >= f->mapping_count) return error(f, VORBIS_invalid_setup);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4125 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4126
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4127 flush_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4128
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4129 f->previous_length = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4130
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4131 for (i=0; i < f->channels; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4132 f->channel_buffers[i] = (float ) setup_malloc(f, sizeof(float) f->blocksize_1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4133 f->previous_window[i] = (float ) setup_malloc(f, sizeof(float) f->blocksize_1/2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4134 f->finalY[i] = (int16 ) setup_malloc(f, sizeof(int16) longest_floorlist);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4135 if (f->channel_buffers[i] == NULL \|\| f->previous_window[i] == NULL \|\| f->finalY[i] == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4136 memset(f->channel_buffers[i], 0, sizeof(float) * f->blocksize_1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4137 #ifdef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4138 f->floor_buffers[i] = (float ) setup_malloc(f, sizeof(float) f->blocksize_1/2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4139 if (f->floor_buffers[i] == NULL) return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4140 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4141 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4142
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4143 if (!init_blocksize(f, 0, f->blocksize_0)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4144 if (!init_blocksize(f, 1, f->blocksize_1)) return FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4145 f->blocksize[0] = f->blocksize_0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4146 f->blocksize[1] = f->blocksize_1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4147
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4148 #ifdef STB_VORBIS_DIVIDE_TABLE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4149 if (integer_divide_table[1][1]==0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4150 for (i=0; i < DIVTAB_NUMER; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4151 for (j=1; j < DIVTAB_DENOM; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4152 integer_divide_table[i][j] = i / j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4153 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4154
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4155 // compute how much temporary memory is needed
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4156
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4157 // 1.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4158 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4159 uint32 imdct_mem = (f->blocksize_1 * sizeof(float) >> 1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4160 uint32 classify_mem;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4161 int i,max_part_read=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4162 for (i=0; i < f->residue_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4163 Residue *r = f->residue_config + i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4164 unsigned int actual_size = f->blocksize_1 / 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4165 unsigned int limit_r_begin = r->begin < actual_size ? r->begin : actual_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4166 unsigned int limit_r_end = r->end < actual_size ? r->end : actual_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4167 int n_read = limit_r_end - limit_r_begin;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4168 int part_read = n_read / r->part_size;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4169 if (part_read > max_part_read)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4170 max_part_read = part_read;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4171 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4172 #ifndef STB_VORBIS_DIVIDES_IN_RESIDUE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4173 classify_mem = f->channels * (sizeof(void) + max_part_read sizeof(uint8 *));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4174 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4175 classify_mem = f->channels * (sizeof(void) + max_part_read sizeof(int *));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4176 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4177
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4178 // maximum reasonable partition size is f->blocksize_1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4179
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4180 f->temp_memory_required = classify_mem;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4181 if (imdct_mem > f->temp_memory_required)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4182 f->temp_memory_required = imdct_mem;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4183 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4184
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4185
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4186 if (f->alloc.alloc_buffer) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4187 assert(f->temp_offset == f->alloc.alloc_buffer_length_in_bytes);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4188 // check if there's enough temp memory so we don't error later
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4189 if (f->setup_offset + sizeof(*f) + f->temp_memory_required > (unsigned) f->temp_offset)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4190 return error(f, VORBIS_outofmem);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4191 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4192
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4193 // @TODO: stb_vorbis_seek_start expects first_audio_page_offset to point to a page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4194 // without PAGEFLAG_continued_packet, so this either points to the first page, or
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4195 // the page after the end of the headers. It might be cleaner to point to a page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4196 // in the middle of the headers, when that's the page where the first audio packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4197 // starts, but we'd have to also correctly skip the end of any continued packet in
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4198 // stb_vorbis_seek_start.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4199 if (f->next_seg == -1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4200 f->first_audio_page_offset = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4201 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4202 f->first_audio_page_offset = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4203 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4204
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4205 return TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4206 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4207
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4208 static void vorbis_deinit(stb_vorbis *p)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4209 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4210 int i,j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4211
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4212 setup_free(p, p->vendor);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4213 for (i=0; i < p->comment_list_length; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4214 setup_free(p, p->comment_list[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4215 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4216 setup_free(p, p->comment_list);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4217
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4218 if (p->residue_config) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4219 for (i=0; i < p->residue_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4220 Residue *r = p->residue_config+i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4221 if (r->classdata) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4222 for (j=0; j < p->codebooks[r->classbook].entries; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4223 setup_free(p, r->classdata[j]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4224 setup_free(p, r->classdata);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4225 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4226 setup_free(p, r->residue_books);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4227 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4228 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4229
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4230 if (p->codebooks) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4231 CHECK(p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4232 for (i=0; i < p->codebook_count; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4233 Codebook *c = p->codebooks + i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4234 setup_free(p, c->codeword_lengths);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4235 setup_free(p, c->multiplicands);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4236 setup_free(p, c->codewords);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4237 setup_free(p, c->sorted_codewords);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4238 // c->sorted_values[-1] is the first entry in the array
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4239 setup_free(p, c->sorted_values ? c->sorted_values-1 : NULL);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4240 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4241 setup_free(p, p->codebooks);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4242 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4243 setup_free(p, p->floor_config);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4244 setup_free(p, p->residue_config);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4245 if (p->mapping) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4246 for (i=0; i < p->mapping_count; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4247 setup_free(p, p->mapping[i].chan);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4248 setup_free(p, p->mapping);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4249 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4250 CHECK(p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4251 for (i=0; i < p->channels && i < STB_VORBIS_MAX_CHANNELS; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4252 setup_free(p, p->channel_buffers[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4253 setup_free(p, p->previous_window[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4254 #ifdef STB_VORBIS_NO_DEFER_FLOOR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4255 setup_free(p, p->floor_buffers[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4256 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4257 setup_free(p, p->finalY[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4258 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4259 for (i=0; i < 2; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4260 setup_free(p, p->A[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4261 setup_free(p, p->B[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4262 setup_free(p, p->C[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4263 setup_free(p, p->window[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4264 setup_free(p, p->bit_reverse[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4265 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4266 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4267 if (p->close_on_free) fclose(p->f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4268 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4269 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4270
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4271 void stb_vorbis_close(stb_vorbis *p)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4272 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4273 if (p == NULL) return;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4274 vorbis_deinit(p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4275 setup_free(p,p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4276 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4277
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4278 static void vorbis_init(stb_vorbis p, const stb_vorbis_alloc z)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4279 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4280 memset(p, 0, sizeof(*p)); // NULL out all malloc'd pointers to start
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4281 if (z) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4282 p->alloc = *z;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4283 p->alloc.alloc_buffer_length_in_bytes &= ~7;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4284 p->temp_offset = p->alloc.alloc_buffer_length_in_bytes;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4285 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4286 p->eof = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4287 p->error = VORBIS__no_error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4288 p->stream = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4289 p->codebooks = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4290 p->page_crc_tests = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4291 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4292 p->close_on_free = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4293 p->f = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4294 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4295 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4296
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4297 int stb_vorbis_get_sample_offset(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4298 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4299 if (f->current_loc_valid)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4300 return f->current_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4301 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4302 return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4303 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4304
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4305 stb_vorbis_info stb_vorbis_get_info(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4306 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4307 stb_vorbis_info d;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4308 d.channels = f->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4309 d.sample_rate = f->sample_rate;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4310 d.setup_memory_required = f->setup_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4311 d.setup_temp_memory_required = f->setup_temp_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4312 d.temp_memory_required = f->temp_memory_required;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4313 d.max_frame_size = f->blocksize_1 >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4314 return d;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4315 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4316
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4317 stb_vorbis_comment stb_vorbis_get_comment(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4318 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4319 stb_vorbis_comment d;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4320 d.vendor = f->vendor;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4321 d.comment_list_length = f->comment_list_length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4322 d.comment_list = f->comment_list;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4323 return d;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4324 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4325
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4326 int stb_vorbis_get_error(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4327 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4328 int e = f->error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4329 f->error = VORBIS__no_error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4330 return e;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4331 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4332
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4333 static stb_vorbis * vorbis_alloc(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4334 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4335 stb_vorbis p = (stb_vorbis ) setup_malloc(f, sizeof(*p));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4336 return p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4337 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4338
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4339 #ifndef STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4340
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4341 void stb_vorbis_flush_pushdata(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4342 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4343 f->previous_length = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4344 f->page_crc_tests = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4345 f->discard_samples_deferred = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4346 f->current_loc_valid = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4347 f->first_decode = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4348 f->samples_output = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4349 f->channel_buffer_start = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4350 f->channel_buffer_end = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4351 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4352
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4353 static int vorbis_search_for_page_pushdata(vorb f, uint8 data, int data_len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4354 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4355 int i,n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4356 for (i=0; i < f->page_crc_tests; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4357 f->scan[i].bytes_done = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4358
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4359 // if we have room for more scans, search for them first, because
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4360 // they may cause us to stop early if their header is incomplete
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4361 if (f->page_crc_tests < STB_VORBIS_PUSHDATA_CRC_COUNT) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4362 if (data_len < 4) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4363 data_len -= 3; // need to look for 4-byte sequence, so don't miss
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4364 // one that straddles a boundary
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4365 for (i=0; i < data_len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4366 if (data[i] == 0x4f) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4367 if (0==memcmp(data+i, ogg_page_header, 4)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4368 int j,len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4369 uint32 crc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4370 // make sure we have the whole page header
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4371 if (i+26 >= data_len \|\| i+27+data[i+26] >= data_len) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4372 // only read up to this page start, so hopefully we'll
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4373 // have the whole page header start next time
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4374 data_len = i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4375 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4376 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4377 // ok, we have it all; compute the length of the page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4378 len = 27 + data[i+26];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4379 for (j=0; j < data[i+26]; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4380 len += data[i+27+j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4381 // scan everything up to the embedded crc (which we must 0)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4382 crc = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4383 for (j=0; j < 22; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4384 crc = crc32_update(crc, data[i+j]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4385 // now process 4 0-bytes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4386 for ( ; j < 26; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4387 crc = crc32_update(crc, 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4388 // len is the total number of bytes we need to scan
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4389 n = f->page_crc_tests++;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4390 f->scan[n].bytes_left = len-j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4391 f->scan[n].crc_so_far = crc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4392 f->scan[n].goal_crc = data[i+22] + (data[i+23] << 8) + (data[i+24]<<16) + (data[i+25]<<24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4393 // if the last frame on a page is continued to the next, then
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4394 // we can't recover the sample_loc immediately
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4395 if (data[i+27+data[i+26]-1] == 255)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4396 f->scan[n].sample_loc = ~0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4397 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4398 f->scan[n].sample_loc = data[i+6] + (data[i+7] << 8) + (data[i+ 8]<<16) + (data[i+ 9]<<24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4399 f->scan[n].bytes_done = i+j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4400 if (f->page_crc_tests == STB_VORBIS_PUSHDATA_CRC_COUNT)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4401 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4402 // keep going if we still have room for more
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4403 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4404 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4405 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4406 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4407
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4408 for (i=0; i < f->page_crc_tests;) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4409 uint32 crc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4410 int j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4411 int n = f->scan[i].bytes_done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4412 int m = f->scan[i].bytes_left;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4413 if (m > data_len - n) m = data_len - n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4414 // m is the bytes to scan in the current chunk
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4415 crc = f->scan[i].crc_so_far;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4416 for (j=0; j < m; ++j)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4417 crc = crc32_update(crc, data[n+j]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4418 f->scan[i].bytes_left -= m;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4419 f->scan[i].crc_so_far = crc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4420 if (f->scan[i].bytes_left == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4421 // does it match?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4422 if (f->scan[i].crc_so_far == f->scan[i].goal_crc) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4423 // Houston, we have page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4424 data_len = n+m; // consumption amount is wherever that scan ended
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4425 f->page_crc_tests = -1; // drop out of page scan mode
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4426 f->previous_length = 0; // decode-but-don't-output one frame
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4427 f->next_seg = -1; // start a new page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4428 f->current_loc = f->scan[i].sample_loc; // set the current sample location
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4429 // to the amount we'd have decoded had we decoded this page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4430 f->current_loc_valid = f->current_loc != ~0U;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4431 return data_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4432 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4433 // delete entry
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4434 f->scan[i] = f->scan[--f->page_crc_tests];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4435 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4436 ++i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4437 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4438 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4439
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4440 return data_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4441 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4442
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4443 // return value: number of bytes we used
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4444 int stb_vorbis_decode_frame_pushdata(
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4445 stb_vorbis *f, // the file we're decoding
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4446 const uint8 *data, int data_len, // the memory available for decoding
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4447 int channels, // place to write number of float buffers
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4448 float *output, // place to write float array of float * buffers
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4449 int *samples // place to write number of output samples
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4450 )
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4451 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4452 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4453 int len,right,left;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4454
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4455 if (!IS_PUSH_MODE(f)) return error(f, VORBIS_invalid_api_mixing);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4456
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4457 if (f->page_crc_tests >= 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4458 *samples = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4459 return vorbis_search_for_page_pushdata(f, (uint8 *) data, data_len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4460 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4461
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4462 f->stream = (uint8 *) data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4463 f->stream_end = (uint8 *) data + data_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4464 f->error = VORBIS__no_error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4465
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4466 // check that we have the entire packet in memory
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4467 if (!is_whole_packet_present(f)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4468 *samples = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4469 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4470 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4471
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4472 if (!vorbis_decode_packet(f, &len, &left, &right)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4473 // save the actual error we encountered
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4474 enum STBVorbisError error = f->error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4475 if (error == VORBIS_bad_packet_type) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4476 // flush and resynch
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4477 f->error = VORBIS__no_error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4478 while (get8_packet(f) != EOP)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4479 if (f->eof) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4480 *samples = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4481 return (int) (f->stream - data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4482 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4483 if (error == VORBIS_continued_packet_flag_invalid) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4484 if (f->previous_length == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4485 // we may be resynching, in which case it's ok to hit one
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4486 // of these; just discard the packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4487 f->error = VORBIS__no_error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4488 while (get8_packet(f) != EOP)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4489 if (f->eof) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4490 *samples = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4491 return (int) (f->stream - data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4492 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4493 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4494 // if we get an error while parsing, what to do?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4495 // well, it DEFINITELY won't work to continue from where we are!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4496 stb_vorbis_flush_pushdata(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4497 // restore the error that actually made us bail
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4498 f->error = error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4499 *samples = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4500 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4501 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4502
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4503 // success!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4504 len = vorbis_finish_frame(f, len, left, right);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4505 for (i=0; i < f->channels; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4506 f->outputs[i] = f->channel_buffers[i] + left;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4507
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4508 if (channels) *channels = f->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4509 *samples = len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4510 *output = f->outputs;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4511 return (int) (f->stream - data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4512 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4513
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4514 stb_vorbis *stb_vorbis_open_pushdata(
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4515 const unsigned char *data, int data_len, // the memory available for decoding
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4516 int *data_used, // only defined if result is not NULL
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4517 int error, const stb_vorbis_alloc alloc)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4518 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4519 stb_vorbis *f, p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4520 vorbis_init(&p, alloc);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4521 p.stream = (uint8 *) data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4522 p.stream_end = (uint8 *) data + data_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4523 p.push_mode = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4524 if (!start_decoder(&p)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4525 if (p.eof)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4526 *error = VORBIS_need_more_data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4527 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4528 *error = p.error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4529 vorbis_deinit(&p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4530 return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4531 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4532 f = vorbis_alloc(&p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4533 if (f) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4534 *f = p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4535 *data_used = (int) (f->stream - data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4536 *error = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4537 return f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4538 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4539 vorbis_deinit(&p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4540 return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4541 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4542 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4543 #endif // STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4544
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4545 unsigned int stb_vorbis_get_file_offset(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4546 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4547 #ifndef STB_VORBIS_NO_PUSHDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4548 if (f->push_mode) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4549 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4550 if (USE_MEMORY(f)) return (unsigned int) (f->stream - f->stream_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4551 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4552 return (unsigned int) (ftell(f->f) - f->f_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4553 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4554 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4555
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4556 #ifndef STB_VORBIS_NO_PULLDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4557 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4558 // DATA-PULLING API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4559 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4560
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4561 static uint32 vorbis_find_page(stb_vorbis f, uint32 end, uint32 *last)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4562 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4563 for(;;) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4564 int n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4565 if (f->eof) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4566 n = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4567 if (n == 0x4f) { // page header candidate
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4568 unsigned int retry_loc = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4569 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4570 // check if we're off the end of a file_section stream
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4571 if (retry_loc - 25 > f->stream_len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4572 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4573 // check the rest of the header
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4574 for (i=1; i < 4; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4575 if (get8(f) != ogg_page_header[i])
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4576 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4577 if (f->eof) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4578 if (i == 4) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4579 uint8 header[27];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4580 uint32 i, crc, goal, len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4581 for (i=0; i < 4; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4582 header[i] = ogg_page_header[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4583 for (; i < 27; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4584 header[i] = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4585 if (f->eof) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4586 if (header[4] != 0) goto invalid;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4587 goal = header[22] + (header[23] << 8) + (header[24]<<16) + ((uint32)header[25]<<24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4588 for (i=22; i < 26; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4589 header[i] = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4590 crc = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4591 for (i=0; i < 27; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4592 crc = crc32_update(crc, header[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4593 len = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4594 for (i=0; i < header[26]; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4595 int s = get8(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4596 crc = crc32_update(crc, s);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4597 len += s;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4598 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4599 if (len && f->eof) return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4600 for (i=0; i < len; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4601 crc = crc32_update(crc, get8(f));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4602 // finished parsing probable page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4603 if (crc == goal) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4604 // we could now check that it's either got the last
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4605 // page flag set, OR it's followed by the capture
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4606 // pattern, but I guess TECHNICALLY you could have
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4607 // a file with garbage between each ogg page and recover
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4608 // from it automatically? So even though that paranoia
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4609 // might decrease the chance of an invalid decode by
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4610 // another 2^32, not worth it since it would hose those
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4611 // invalid-but-useful files?
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4612 if (end)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4613 *end = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4614 if (last) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4615 if (header[5] & 0x04)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4616 *last = 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4617 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4618 *last = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4619 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4620 set_file_offset(f, retry_loc-1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4621 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4622 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4623 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4624 invalid:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4625 // not a valid page, so rewind and look for next one
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4626 set_file_offset(f, retry_loc);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4627 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4628 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4629 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4630
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4631
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4632 #define SAMPLE_unknown 0xffffffff
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4633
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4634 // seeking is implemented with a binary search, which narrows down the range to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4635 // 64K, before using a linear search (because finding the synchronization
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4636 // pattern can be expensive, and the chance we'd find the end page again is
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4637 // relatively high for small ranges)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4638 //
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4639 // two initial interpolation-style probes are used at the start of the search
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4640 // to try to bound either side of the binary search sensibly, while still
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4641 // working in O(log n) time if they fail.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4642
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4643 static int get_seek_page_info(stb_vorbis f, ProbedPage z)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4644 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4645 uint8 header[27], lacing[255];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4646 int i,len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4647
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4648 // record where the page starts
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4649 z->page_start = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4650
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4651 // parse the header
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4652 getn(f, header, 27);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4653 if (header[0] != 'O' \|\| header[1] != 'g' \|\| header[2] != 'g' \|\| header[3] != 'S')
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4654 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4655 getn(f, lacing, header[26]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4656
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4657 // determine the length of the payload
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4658 len = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4659 for (i=0; i < header[26]; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4660 len += lacing[i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4661
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4662 // this implies where the page ends
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4663 z->page_end = z->page_start + 27 + header[26] + len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4664
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4665 // read the last-decoded sample out of the data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4666 z->last_decoded_sample = header[6] + (header[7] << 8) + (header[8] << 16) + (header[9] << 24);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4667
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4668 // restore file state to where we were
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4669 set_file_offset(f, z->page_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4670 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4671 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4672
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4673 // rarely used function to seek back to the preceding page while finding the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4674 // start of a packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4675 static int go_to_page_before(stb_vorbis *f, unsigned int limit_offset)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4676 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4677 unsigned int previous_safe, end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4678
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4679 // now we want to seek back 64K from the limit
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4680 if (limit_offset >= 65536 && limit_offset-65536 >= f->first_audio_page_offset)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4681 previous_safe = limit_offset - 65536;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4682 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4683 previous_safe = f->first_audio_page_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4684
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4685 set_file_offset(f, previous_safe);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4686
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4687 while (vorbis_find_page(f, &end, NULL)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4688 if (end >= limit_offset && stb_vorbis_get_file_offset(f) < limit_offset)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4689 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4690 set_file_offset(f, end);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4691 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4692
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4693 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4694 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4695
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4696 // implements the search logic for finding a page and starting decoding. if
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4697 // the function succeeds, current_loc_valid will be true and current_loc will
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4698 // be less than or equal to the provided sample number (the closer the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4699 // better).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4700 static int seek_to_sample_coarse(stb_vorbis *f, uint32 sample_number)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4701 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4702 ProbedPage left, right, mid;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4703 int i, start_seg_with_known_loc, end_pos, page_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4704 uint32 delta, stream_length, padding, last_sample_limit;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4705 double offset = 0.0, bytes_per_sample = 0.0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4706 int probe = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4707
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4708 // find the last page and validate the target sample
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4709 stream_length = stb_vorbis_stream_length_in_samples(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4710 if (stream_length == 0) return error(f, VORBIS_seek_without_length);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4711 if (sample_number > stream_length) return error(f, VORBIS_seek_invalid);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4712
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4713 // this is the maximum difference between the window-center (which is the
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4714 // actual granule position value), and the right-start (which the spec
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4715 // indicates should be the granule position (give or take one)).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4716 padding = ((f->blocksize_1 - f->blocksize_0) >> 2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4717 if (sample_number < padding)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4718 last_sample_limit = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4719 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4720 last_sample_limit = sample_number - padding;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4721
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4722 left = f->p_first;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4723 while (left.last_decoded_sample == ~0U) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4724 // (untested) the first page does not have a 'last_decoded_sample'
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4725 set_file_offset(f, left.page_end);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4726 if (!get_seek_page_info(f, &left)) goto error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4727 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4728
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4729 right = f->p_last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4730 assert(right.last_decoded_sample != ~0U);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4731
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4732 // starting from the start is handled differently
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4733 if (last_sample_limit <= left.last_decoded_sample) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4734 if (stb_vorbis_seek_start(f)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4735 if (f->current_loc > sample_number)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4736 return error(f, VORBIS_seek_failed);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4737 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4738 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4739 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4740 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4741
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4742 while (left.page_end != right.page_start) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4743 assert(left.page_end < right.page_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4744 // search range in bytes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4745 delta = right.page_start - left.page_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4746 if (delta <= 65536) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4747 // there's only 64K left to search - handle it linearly
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4748 set_file_offset(f, left.page_end);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4749 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4750 if (probe < 2) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4751 if (probe == 0) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4752 // first probe (interpolate)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4753 double data_bytes = right.page_end - left.page_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4754 bytes_per_sample = data_bytes / right.last_decoded_sample;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4755 offset = left.page_start + bytes_per_sample * (last_sample_limit - left.last_decoded_sample);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4756 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4757 // second probe (try to bound the other side)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4758 double error = ((double) last_sample_limit - mid.last_decoded_sample) * bytes_per_sample;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4759 if (error >= 0 && error < 8000) error = 8000;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4760 if (error < 0 && error > -8000) error = -8000;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4761 offset += error * 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4762 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4763
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4764 // ensure the offset is valid
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4765 if (offset < left.page_end)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4766 offset = left.page_end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4767 if (offset > right.page_start - 65536)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4768 offset = right.page_start - 65536;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4769
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4770 set_file_offset(f, (unsigned int) offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4771 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4772 // binary search for large ranges (offset by 32K to ensure
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4773 // we don't hit the right page)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4774 set_file_offset(f, left.page_end + (delta / 2) - 32768);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4775 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4776
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4777 if (!vorbis_find_page(f, NULL, NULL)) goto error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4778 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4779
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4780 for (;;) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4781 if (!get_seek_page_info(f, &mid)) goto error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4782 if (mid.last_decoded_sample != ~0U) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4783 // (untested) no frames end on this page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4784 set_file_offset(f, mid.page_end);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4785 assert(mid.page_start < right.page_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4786 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4787
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4788 // if we've just found the last page again then we're in a tricky file,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4789 // and we're close enough (if it wasn't an interpolation probe).
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4790 if (mid.page_start == right.page_start) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4791 if (probe >= 2 \|\| delta <= 65536)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4792 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4793 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4794 if (last_sample_limit < mid.last_decoded_sample)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4795 right = mid;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4796 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4797 left = mid;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4798 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4799
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4800 ++probe;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4801 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4802
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4803 // seek back to start of the last packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4804 page_start = left.page_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4805 set_file_offset(f, page_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4806 if (!start_page(f)) return error(f, VORBIS_seek_failed);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4807 end_pos = f->end_seg_with_known_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4808 assert(end_pos >= 0);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4809
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4810 for (;;) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4811 for (i = end_pos; i > 0; --i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4812 if (f->segments[i-1] != 255)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4813 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4814
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4815 start_seg_with_known_loc = i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4816
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4817 if (start_seg_with_known_loc > 0 \|\| !(f->page_flag & PAGEFLAG_continued_packet))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4818 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4819
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4820 // (untested) the final packet begins on an earlier page
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4821 if (!go_to_page_before(f, page_start))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4822 goto error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4823
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4824 page_start = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4825 if (!start_page(f)) goto error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4826 end_pos = f->segment_count - 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4827 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4828
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4829 // prepare to start decoding
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4830 f->current_loc_valid = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4831 f->last_seg = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4832 f->valid_bits = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4833 f->packet_bytes = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4834 f->bytes_in_seg = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4835 f->previous_length = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4836 f->next_seg = start_seg_with_known_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4837
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4838 for (i = 0; i < start_seg_with_known_loc; i++)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4839 skip(f, f->segments[i]);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4840
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4841 // start decoding (optimizable - this frame is generally discarded)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4842 if (!vorbis_pump_first_frame(f))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4843 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4844 if (f->current_loc > sample_number)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4845 return error(f, VORBIS_seek_failed);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4846 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4847
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4848 error:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4849 // try to restore the file to a valid state
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4850 stb_vorbis_seek_start(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4851 return error(f, VORBIS_seek_failed);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4852 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4853
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4854 // the same as vorbis_decode_initial, but without advancing
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4855 static int peek_decode_initial(vorb f, int p_left_start, int p_left_end, int p_right_start, int p_right_end, int mode)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4856 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4857 int bits_read, bytes_read;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4858
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4859 if (!vorbis_decode_initial(f, p_left_start, p_left_end, p_right_start, p_right_end, mode))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4860 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4861
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4862 // either 1 or 2 bytes were read, figure out which so we can rewind
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4863 bits_read = 1 + ilog(f->mode_count-1);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4864 if (f->mode_config[*mode].blockflag)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4865 bits_read += 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4866 bytes_read = (bits_read + 7) / 8;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4867
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4868 f->bytes_in_seg += bytes_read;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4869 f->packet_bytes -= bytes_read;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4870 skip(f, -bytes_read);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4871 if (f->next_seg == -1)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4872 f->next_seg = f->segment_count - 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4873 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4874 f->next_seg--;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4875 f->valid_bits = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4876
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4877 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4878 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4879
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4880 int stb_vorbis_seek_frame(stb_vorbis *f, unsigned int sample_number)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4881 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4882 uint32 max_frame_samples;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4883
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4884 if (IS_PUSH_MODE(f)) return error(f, VORBIS_invalid_api_mixing);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4885
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4886 // fast page-level search
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4887 if (!seek_to_sample_coarse(f, sample_number))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4888 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4889
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4890 assert(f->current_loc_valid);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4891 assert(f->current_loc <= sample_number);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4892
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4893 // linear search for the relevant packet
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4894 max_frame_samples = (f->blocksize_1*3 - f->blocksize_0) >> 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4895 while (f->current_loc < sample_number) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4896 int left_start, left_end, right_start, right_end, mode, frame_samples;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4897 if (!peek_decode_initial(f, &left_start, &left_end, &right_start, &right_end, &mode))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4898 return error(f, VORBIS_seek_failed);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4899 // calculate the number of samples returned by the next frame
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4900 frame_samples = right_start - left_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4901 if (f->current_loc + frame_samples > sample_number) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4902 return 1; // the next frame will contain the sample
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4903 } else if (f->current_loc + frame_samples + max_frame_samples > sample_number) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4904 // there's a chance the frame after this could contain the sample
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4905 vorbis_pump_first_frame(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4906 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4907 // this frame is too early to be relevant
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4908 f->current_loc += frame_samples;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4909 f->previous_length = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4910 maybe_start_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4911 flush_packet(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4912 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4913 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4914 // the next frame should start with the sample
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4915 if (f->current_loc != sample_number) return error(f, VORBIS_seek_failed);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4916 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4917 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4918
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4919 int stb_vorbis_seek(stb_vorbis *f, unsigned int sample_number)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4920 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4921 if (!stb_vorbis_seek_frame(f, sample_number))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4922 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4923
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4924 if (sample_number != f->current_loc) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4925 int n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4926 uint32 frame_start = f->current_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4927 stb_vorbis_get_frame_float(f, &n, NULL);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4928 assert(sample_number > frame_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4929 assert(f->channel_buffer_start + (int) (sample_number-frame_start) <= f->channel_buffer_end);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4930 f->channel_buffer_start += (sample_number - frame_start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4931 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4932
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4933 return 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4934 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4935
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4936 int stb_vorbis_seek_start(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4937 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4938 if (IS_PUSH_MODE(f)) { return error(f, VORBIS_invalid_api_mixing); }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4939 set_file_offset(f, f->first_audio_page_offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4940 f->previous_length = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4941 f->first_decode = TRUE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4942 f->next_seg = -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4943 return vorbis_pump_first_frame(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4944 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4945
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4946 unsigned int stb_vorbis_stream_length_in_samples(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4947 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4948 unsigned int restore_offset, previous_safe;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4949 unsigned int end, last_page_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4950
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4951 if (IS_PUSH_MODE(f)) return error(f, VORBIS_invalid_api_mixing);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4952 if (!f->total_samples) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4953 unsigned int last;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4954 uint32 lo,hi;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4955 char header[6];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4956
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4957 // first, store the current decode position so we can restore it
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4958 restore_offset = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4959
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4960 // now we want to seek back 64K from the end (the last page must
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4961 // be at most a little less than 64K, but let's allow a little slop)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4962 if (f->stream_len >= 65536 && f->stream_len-65536 >= f->first_audio_page_offset)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4963 previous_safe = f->stream_len - 65536;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4964 else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4965 previous_safe = f->first_audio_page_offset;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4966
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4967 set_file_offset(f, previous_safe);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4968 // previous_safe is now our candidate 'earliest known place that seeking
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4969 // to will lead to the final page'
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4970
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4971 if (!vorbis_find_page(f, &end, &last)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4972 // if we can't find a page, we're hosed!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4973 f->error = VORBIS_cant_find_last_page;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4974 f->total_samples = 0xffffffff;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4975 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4976 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4977
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4978 // check if there are more pages
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4979 last_page_loc = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4980
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4981 // stop when the last_page flag is set, not when we reach eof;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4982 // this allows us to stop short of a 'file_section' end without
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4983 // explicitly checking the length of the section
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4984 while (!last) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4985 set_file_offset(f, end);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4986 if (!vorbis_find_page(f, &end, &last)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4987 // the last page we found didn't have the 'last page' flag
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4988 // set. whoops!
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4989 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4990 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4991 //previous_safe = last_page_loc+1; // NOTE: not used after this point, but note for debugging
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4992 last_page_loc = stb_vorbis_get_file_offset(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4993 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4994
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4995 set_file_offset(f, last_page_loc);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4996
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4997 // parse the header
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4998 getn(f, (unsigned char *)header, 6);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	4999 // extract the absolute granule position
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5000 lo = get32(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5001 hi = get32(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5002 if (lo == 0xffffffff && hi == 0xffffffff) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5003 f->error = VORBIS_cant_find_last_page;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5004 f->total_samples = SAMPLE_unknown;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5005 goto done;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5006 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5007 if (hi)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5008 lo = 0xfffffffe; // saturate
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5009 f->total_samples = lo;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5010
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5011 f->p_last.page_start = last_page_loc;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5012 f->p_last.page_end = end;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5013 f->p_last.last_decoded_sample = lo;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5014
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5015 done:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5016 set_file_offset(f, restore_offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5017 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5018 return f->total_samples == SAMPLE_unknown ? 0 : f->total_samples;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5019 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5020
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5021 float stb_vorbis_stream_length_in_seconds(stb_vorbis *f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5022 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5023 return stb_vorbis_stream_length_in_samples(f) / (float) f->sample_rate;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5024 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5025
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5026
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5027
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5028 int stb_vorbis_get_frame_float(stb_vorbis f, int channels, float ***output)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5029 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5030 int len, right,left,i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5031 if (IS_PUSH_MODE(f)) return error(f, VORBIS_invalid_api_mixing);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5032
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5033 if (!vorbis_decode_packet(f, &len, &left, &right)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5034 f->channel_buffer_start = f->channel_buffer_end = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5035 return 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5036 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5037
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5038 len = vorbis_finish_frame(f, len, left, right);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5039 for (i=0; i < f->channels; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5040 f->outputs[i] = f->channel_buffers[i] + left;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5041
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5042 f->channel_buffer_start = left;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5043 f->channel_buffer_end = left+len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5044
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5045 if (channels) *channels = f->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5046 if (output) *output = f->outputs;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5047 return len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5048 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5049
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5050 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5051
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5052 stb_vorbis * stb_vorbis_open_file_section(FILE file, int close_on_free, int error, const stb_vorbis_alloc *alloc, unsigned int length)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5053 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5054 stb_vorbis *f, p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5055 vorbis_init(&p, alloc);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5056 p.f = file;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5057 p.f_start = (uint32) ftell(file);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5058 p.stream_len = length;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5059 p.close_on_free = close_on_free;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5060 if (start_decoder(&p)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5061 f = vorbis_alloc(&p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5062 if (f) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5063 *f = p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5064 vorbis_pump_first_frame(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5065 return f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5066 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5067 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5068 if (error) *error = p.error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5069 vorbis_deinit(&p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5070 return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5071 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5072
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5073 stb_vorbis * stb_vorbis_open_file(FILE file, int close_on_free, int error, const stb_vorbis_alloc *alloc)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5074 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5075 unsigned int len, start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5076 start = (unsigned int) ftell(file);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5077 fseek(file, 0, SEEK_END);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5078 len = (unsigned int) (ftell(file) - start);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5079 fseek(file, start, SEEK_SET);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5080 return stb_vorbis_open_file_section(file, close_on_free, error, alloc, len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5081 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5082
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5083 stb_vorbis * stb_vorbis_open_filename(const char filename, int error, const stb_vorbis_alloc *alloc)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5084 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5085 FILE *f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5086 #if defined(_WIN32) && defined(__STDC_WANT_SECURE_LIB__)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5087 if (0 != fopen_s(&f, filename, "rb"))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5088 f = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5089 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5090 f = fopen(filename, "rb");
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5091 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5092 if (f)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5093 return stb_vorbis_open_file(f, TRUE, error, alloc);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5094 if (error) *error = VORBIS_file_open_failure;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5095 return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5096 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5097 #endif // STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5098
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5099 stb_vorbis * stb_vorbis_open_memory(const unsigned char data, int len, int error, const stb_vorbis_alloc *alloc)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5100 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5101 stb_vorbis *f, p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5102 if (!data) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5103 if (error) *error = VORBIS_unexpected_eof;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5104 return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5105 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5106 vorbis_init(&p, alloc);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5107 p.stream = (uint8 *) data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5108 p.stream_end = (uint8 *) data + len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5109 p.stream_start = (uint8 *) p.stream;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5110 p.stream_len = len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5111 p.push_mode = FALSE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5112 if (start_decoder(&p)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5113 f = vorbis_alloc(&p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5114 if (f) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5115 *f = p;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5116 vorbis_pump_first_frame(f);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5117 if (error) *error = VORBIS__no_error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5118 return f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5119 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5120 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5121 if (error) *error = p.error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5122 vorbis_deinit(&p);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5123 return NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5124 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5125
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5126 #ifndef STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5127 #define PLAYBACK_MONO 1
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5128 #define PLAYBACK_LEFT 2
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5129 #define PLAYBACK_RIGHT 4
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5130
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5131 #define L (PLAYBACK_LEFT \| PLAYBACK_MONO)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5132 #define C (PLAYBACK_LEFT \| PLAYBACK_RIGHT \| PLAYBACK_MONO)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5133 #define R (PLAYBACK_RIGHT \| PLAYBACK_MONO)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5134
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5135 static int8 channel_position[7][6] =
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5136 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5137 { 0 },
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5138 { C },
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5139 { L, R },
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5140 { L, C, R },
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5141 { L, R, L, R },
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5142 { L, C, R, L, R },
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5143 { L, C, R, L, R, C },
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5144 };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5145
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5146
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5147 #ifndef STB_VORBIS_NO_FAST_SCALED_FLOAT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5148 typedef union {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5149 float f;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5150 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5151 } float_conv;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5152 typedef char stb_vorbis_float_size_test[sizeof(float)==4 && sizeof(int) == 4];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5153 #define FASTDEF(x) float_conv x
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5154 // add (1<<23) to convert to int, then divide by 2^SHIFT, then add 0.5/2^SHIFT to round
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5155 #define MAGIC(SHIFT) (1.5f * (1 << (23-SHIFT)) + 0.5f/(1 << SHIFT))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5156 #define ADDEND(SHIFT) (((150-SHIFT) << 23) + (1 << 22))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5157 #define FAST_SCALED_FLOAT_TO_INT(temp,x,s) (temp.f = (x) + MAGIC(s), temp.i - ADDEND(s))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5158 #define check_endianness()
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5159 #else
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5160 #define FAST_SCALED_FLOAT_TO_INT(temp,x,s) ((int) ((x) * (1 << (s))))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5161 #define check_endianness()
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5162 #define FASTDEF(x)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5163 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5164
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5165 static void copy_samples(short dest, float src, int len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5166 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5167 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5168 check_endianness();
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5169 for (i=0; i < len; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5170 FASTDEF(temp);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5171 int v = FAST_SCALED_FLOAT_TO_INT(temp, src[i],15);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5172 if ((unsigned int) (v + 32768) > 65535)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5173 v = v < 0 ? -32768 : 32767;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5174 dest[i] = v;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5175 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5176 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5177
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5178 static void compute_samples(int mask, short output, int num_c, float *data, int d_offset, int len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5179 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5180 #define STB_BUFFER_SIZE 32
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5181 float buffer[STB_BUFFER_SIZE];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5182 int i,j,o,n = STB_BUFFER_SIZE;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5183 check_endianness();
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5184 for (o = 0; o < len; o += STB_BUFFER_SIZE) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5185 memset(buffer, 0, sizeof(buffer));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5186 if (o + n > len) n = len - o;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5187 for (j=0; j < num_c; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5188 if (channel_position[num_c][j] & mask) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5189 for (i=0; i < n; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5190 buffer[i] += data[j][d_offset+o+i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5191 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5192 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5193 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5194 FASTDEF(temp);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5195 int v = FAST_SCALED_FLOAT_TO_INT(temp,buffer[i],15);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5196 if ((unsigned int) (v + 32768) > 65535)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5197 v = v < 0 ? -32768 : 32767;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5198 output[o+i] = v;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5199 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5200 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5201 #undef STB_BUFFER_SIZE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5202 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5203
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5204 static void compute_stereo_samples(short output, int num_c, float *data, int d_offset, int len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5205 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5206 #define STB_BUFFER_SIZE 32
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5207 float buffer[STB_BUFFER_SIZE];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5208 int i,j,o,n = STB_BUFFER_SIZE >> 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5209 // o is the offset in the source data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5210 check_endianness();
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5211 for (o = 0; o < len; o += STB_BUFFER_SIZE >> 1) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5212 // o2 is the offset in the output data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5213 int o2 = o << 1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5214 memset(buffer, 0, sizeof(buffer));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5215 if (o + n > len) n = len - o;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5216 for (j=0; j < num_c; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5217 int m = channel_position[num_c][j] & (PLAYBACK_LEFT \| PLAYBACK_RIGHT);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5218 if (m == (PLAYBACK_LEFT \| PLAYBACK_RIGHT)) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5219 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5220 buffer[i*2+0] += data[j][d_offset+o+i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5221 buffer[i*2+1] += data[j][d_offset+o+i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5222 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5223 } else if (m == PLAYBACK_LEFT) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5224 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5225 buffer[i*2+0] += data[j][d_offset+o+i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5226 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5227 } else if (m == PLAYBACK_RIGHT) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5228 for (i=0; i < n; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5229 buffer[i*2+1] += data[j][d_offset+o+i];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5230 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5231 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5232 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5233 for (i=0; i < (n<<1); ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5234 FASTDEF(temp);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5235 int v = FAST_SCALED_FLOAT_TO_INT(temp,buffer[i],15);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5236 if ((unsigned int) (v + 32768) > 65535)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5237 v = v < 0 ? -32768 : 32767;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5238 output[o2+i] = v;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5239 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5240 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5241 #undef STB_BUFFER_SIZE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5242 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5243
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5244 static void convert_samples_short(int buf_c, short buffer, int b_offset, int data_c, float data, int d_offset, int samples)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5245 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5246 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5247 if (buf_c != data_c && buf_c <= 2 && data_c <= 6) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5248 static int channel_selector[3][2] = { {0}, {PLAYBACK_MONO}, {PLAYBACK_LEFT, PLAYBACK_RIGHT} };
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5249 for (i=0; i < buf_c; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5250 compute_samples(channel_selector[buf_c][i], buffer[i]+b_offset, data_c, data, d_offset, samples);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5251 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5252 int limit = buf_c < data_c ? buf_c : data_c;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5253 for (i=0; i < limit; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5254 copy_samples(buffer[i]+b_offset, data[i]+d_offset, samples);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5255 for ( ; i < buf_c; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5256 memset(buffer[i]+b_offset, 0, sizeof(short) * samples);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5257 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5258 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5259
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5260 int stb_vorbis_get_frame_short(stb_vorbis f, int num_c, short *buffer, int num_samples)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5261 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5262 float **output = NULL;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5263 int len = stb_vorbis_get_frame_float(f, NULL, &output);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5264 if (len > num_samples) len = num_samples;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5265 if (len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5266 convert_samples_short(num_c, buffer, 0, f->channels, output, 0, len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5267 return len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5268 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5269
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5270 static void convert_channels_short_interleaved(int buf_c, short buffer, int data_c, float *data, int d_offset, int len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5271 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5272 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5273 check_endianness();
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5274 if (buf_c != data_c && buf_c <= 2 && data_c <= 6) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5275 assert(buf_c == 2);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5276 for (i=0; i < buf_c; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5277 compute_stereo_samples(buffer, data_c, data, d_offset, len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5278 } else {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5279 int limit = buf_c < data_c ? buf_c : data_c;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5280 int j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5281 for (j=0; j < len; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5282 for (i=0; i < limit; ++i) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5283 FASTDEF(temp);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5284 float f = data[i][d_offset+j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5285 int v = FAST_SCALED_FLOAT_TO_INT(temp, f,15);//data[i][d_offset+j],15);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5286 if ((unsigned int) (v + 32768) > 65535)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5287 v = v < 0 ? -32768 : 32767;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5288 *buffer++ = v;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5289 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5290 for ( ; i < buf_c; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5291 *buffer++ = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5292 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5293 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5294 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5295
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5296 int stb_vorbis_get_frame_short_interleaved(stb_vorbis f, int num_c, short buffer, int num_shorts)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5297 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5298 float **output;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5299 int len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5300 if (num_c == 1) return stb_vorbis_get_frame_short(f,num_c,&buffer, num_shorts);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5301 len = stb_vorbis_get_frame_float(f, NULL, &output);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5302 if (len) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5303 if (len*num_c > num_shorts) len = num_shorts / num_c;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5304 convert_channels_short_interleaved(num_c, buffer, f->channels, output, 0, len);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5305 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5306 return len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5307 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5308
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5309 int stb_vorbis_get_samples_short_interleaved(stb_vorbis f, int channels, short buffer, int num_shorts)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5310 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5311 float **outputs;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5312 int len = num_shorts / channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5313 int n=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5314 while (n < len) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5315 int k = f->channel_buffer_end - f->channel_buffer_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5316 if (n+k >= len) k = len - n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5317 if (k)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5318 convert_channels_short_interleaved(channels, buffer, f->channels, f->channel_buffers, f->channel_buffer_start, k);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5319 buffer += k*channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5320 n += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5321 f->channel_buffer_start += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5322 if (n == len) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5323 if (!stb_vorbis_get_frame_float(f, NULL, &outputs)) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5324 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5325 return n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5326 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5327
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5328 int stb_vorbis_get_samples_short(stb_vorbis f, int channels, short *buffer, int len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5329 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5330 float **outputs;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5331 int n=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5332 while (n < len) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5333 int k = f->channel_buffer_end - f->channel_buffer_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5334 if (n+k >= len) k = len - n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5335 if (k)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5336 convert_samples_short(channels, buffer, n, f->channels, f->channel_buffers, f->channel_buffer_start, k);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5337 n += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5338 f->channel_buffer_start += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5339 if (n == len) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5340 if (!stb_vorbis_get_frame_float(f, NULL, &outputs)) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5341 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5342 return n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5343 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5344
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5345 #ifndef STB_VORBIS_NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5346 int stb_vorbis_decode_filename(const char filename, int channels, int sample_rate, short *output)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5347 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5348 int data_len, offset, total, limit, error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5349 short *data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5350 stb_vorbis *v = stb_vorbis_open_filename(filename, &error, NULL);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5351 if (v == NULL) return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5352 limit = v->channels * 4096;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5353 *channels = v->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5354 if (sample_rate)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5355 *sample_rate = v->sample_rate;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5356 offset = data_len = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5357 total = limit;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5358 data = (short ) malloc(total sizeof(*data));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5359 if (data == NULL) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5360 stb_vorbis_close(v);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5361 return -2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5362 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5363 for (;;) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5364 int n = stb_vorbis_get_frame_short_interleaved(v, v->channels, data+offset, total-offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5365 if (n == 0) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5366 data_len += n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5367 offset += n * v->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5368 if (offset + limit > total) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5369 short *data2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5370 total *= 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5371 data2 = (short ) realloc(data, total sizeof(*data));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5372 if (data2 == NULL) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5373 free(data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5374 stb_vorbis_close(v);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5375 return -2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5376 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5377 data = data2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5378 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5379 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5380 *output = data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5381 stb_vorbis_close(v);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5382 return data_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5383 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5384 #endif // NO_STDIO
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5385
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5386 int stb_vorbis_decode_memory(const uint8 mem, int len, int channels, int sample_rate, short *output)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5387 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5388 int data_len, offset, total, limit, error;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5389 short *data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5390 stb_vorbis *v = stb_vorbis_open_memory(mem, len, &error, NULL);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5391 if (v == NULL) return -1;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5392 limit = v->channels * 4096;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5393 *channels = v->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5394 if (sample_rate)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5395 *sample_rate = v->sample_rate;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5396 offset = data_len = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5397 total = limit;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5398 data = (short ) malloc(total sizeof(*data));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5399 if (data == NULL) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5400 stb_vorbis_close(v);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5401 return -2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5402 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5403 for (;;) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5404 int n = stb_vorbis_get_frame_short_interleaved(v, v->channels, data+offset, total-offset);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5405 if (n == 0) break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5406 data_len += n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5407 offset += n * v->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5408 if (offset + limit > total) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5409 short *data2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5410 total *= 2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5411 data2 = (short ) realloc(data, total sizeof(*data));
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5412 if (data2 == NULL) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5413 free(data);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5414 stb_vorbis_close(v);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5415 return -2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5416 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5417 data = data2;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5418 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5419 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5420 *output = data;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5421 stb_vorbis_close(v);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5422 return data_len;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5423 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5424 #endif // STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5425
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5426 int stb_vorbis_get_samples_float_interleaved(stb_vorbis f, int channels, float buffer, int num_floats)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5427 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5428 float **outputs;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5429 int len = num_floats / channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5430 int n=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5431 int z = f->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5432 if (z > channels) z = channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5433 while (n < len) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5434 int i,j;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5435 int k = f->channel_buffer_end - f->channel_buffer_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5436 if (n+k >= len) k = len - n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5437 for (j=0; j < k; ++j) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5438 for (i=0; i < z; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5439 *buffer++ = f->channel_buffers[i][f->channel_buffer_start+j];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5440 for ( ; i < channels; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5441 *buffer++ = 0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5442 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5443 n += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5444 f->channel_buffer_start += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5445 if (n == len)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5446 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5447 if (!stb_vorbis_get_frame_float(f, NULL, &outputs))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5448 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5449 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5450 return n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5451 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5452
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5453 int stb_vorbis_get_samples_float(stb_vorbis f, int channels, float *buffer, int num_samples)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5454 {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5455 float **outputs;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5456 int n=0;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5457 int z = f->channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5458 if (z > channels) z = channels;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5459 while (n < num_samples) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5460 int i;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5461 int k = f->channel_buffer_end - f->channel_buffer_start;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5462 if (n+k >= num_samples) k = num_samples - n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5463 if (k) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5464 for (i=0; i < z; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5465 memcpy(buffer[i]+n, f->channel_buffers[i]+f->channel_buffer_start, sizeof(float)*k);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5466 for ( ; i < channels; ++i)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5467 memset(buffer[i]+n, 0, sizeof(float) * k);
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5468 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5469 n += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5470 f->channel_buffer_start += k;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5471 if (n == num_samples)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5472 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5473 if (!stb_vorbis_get_frame_float(f, NULL, &outputs))
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5474 break;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5475 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5476 return n;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5477 }
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5478 #endif // STB_VORBIS_NO_PULLDATA_API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5479
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5480 /* Version history
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5481 1.17 - 2019-07-08 - fix CVE-2019-13217, -13218, -13219, -13220, -13221, -13222, -13223
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5482 found with Mayhem by ForAllSecure
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5483 1.16 - 2019-03-04 - fix warnings
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5484 1.15 - 2019-02-07 - explicit failure if Ogg Skeleton data is found
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5485 1.14 - 2018-02-11 - delete bogus dealloca usage
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5486 1.13 - 2018-01-29 - fix truncation of last frame (hopefully)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5487 1.12 - 2017-11-21 - limit residue begin/end to blocksize/2 to avoid large temp allocs in bad/corrupt files
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5488 1.11 - 2017-07-23 - fix MinGW compilation
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5489 1.10 - 2017-03-03 - more robust seeking; fix negative ilog(); clear error in open_memory
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5490 1.09 - 2016-04-04 - back out 'avoid discarding last frame' fix from previous version
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5491 1.08 - 2016-04-02 - fixed multiple warnings; fix setup memory leaks;
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5492 avoid discarding last frame of audio data
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5493 1.07 - 2015-01-16 - fixed some warnings, fix mingw, const-correct API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5494 some more crash fixes when out of memory or with corrupt files
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5495 1.06 - 2015-08-31 - full, correct support for seeking API (Dougall Johnson)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5496 some crash fixes when out of memory or with corrupt files
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5497 1.05 - 2015-04-19 - don't define __forceinline if it's redundant
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5498 1.04 - 2014-08-27 - fix missing const-correct case in API
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5499 1.03 - 2014-08-07 - Warning fixes
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5500 1.02 - 2014-07-09 - Declare qsort compare function _cdecl on windows
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5501 1.01 - 2014-06-18 - fix stb_vorbis_get_samples_float
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5502 1.0 - 2014-05-26 - fix memory leaks; fix warnings; fix bugs in multichannel
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5503 (API change) report sample rate for decode-full-file funcs
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5504 0.99996 - bracket #include <malloc.h> for macintosh compilation by Laurent Gomila
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5505 0.99995 - use union instead of pointer-cast for fast-float-to-int to avoid alias-optimization problem
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5506 0.99994 - change fast-float-to-int to work in single-precision FPU mode, remove endian-dependence
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5507 0.99993 - remove assert that fired on legal files with empty tables
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5508 0.99992 - rewind-to-start
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5509 0.99991 - bugfix to stb_vorbis_get_samples_short by Bernhard Wodo
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5510 0.9999 - (should have been 0.99990) fix no-CRT support, compiling as C++
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5511 0.9998 - add a full-decode function with a memory source
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5512 0.9997 - fix a bug in the read-from-FILE case in 0.9996 addition
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5513 0.9996 - query length of vorbis stream in samples/seconds
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5514 0.9995 - bugfix to another optimization that only happened in certain files
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5515 0.9994 - bugfix to one of the optimizations that caused significant (but inaudible?) errors
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5516 0.9993 - performance improvements; runs in 99% to 104% of time of reference implementation
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5517 0.9992 - performance improvement of IMDCT; now performs close to reference implementation
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5518 0.9991 - performance improvement of IMDCT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5519 0.999 - (should have been 0.9990) performance improvement of IMDCT
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5520 0.998 - no-CRT support from Casey Muratori
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5521 0.997 - bugfixes for bugs found by Terje Mathisen
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5522 0.996 - bugfix: fast-huffman decode initialized incorrectly for sparse codebooks; fixing gives 10% speedup - found by Terje Mathisen
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5523 0.995 - bugfix: fix to 'effective' overrun detection - found by Terje Mathisen
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5524 0.994 - bugfix: garbage decode on final VQ symbol of a non-multiple - found by Terje Mathisen
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5525 0.993 - bugfix: pushdata API required 1 extra byte for empty page (failed to consume final page if empty) - found by Terje Mathisen
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5526 0.992 - fixes for MinGW warning
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5527 0.991 - turn fast-float-conversion on by default
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5528 0.990 - fix push-mode seek recovery if you seek into the headers
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5529 0.98b - fix to bad release of 0.98
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5530 0.98 - fix push-mode seek recovery; robustify float-to-int and support non-fast mode
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5531 0.97 - builds under c++ (typecasting, don't use 'class' keyword)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5532 0.96 - somehow MY 0.95 was right, but the web one was wrong, so here's my 0.95 rereleased as 0.96, fixes a typo in the clamping code
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5533 0.95 - clamping code for 16-bit functions
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5534 0.94 - not publically released
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5535 0.93 - fixed all-zero-floor case (was decoding garbage)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5536 0.92 - fixed a memory leak
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5537 0.91 - conditional compiles to omit parts of the API and the infrastructure to support them: STB_VORBIS_NO_PULLDATA_API, STB_VORBIS_NO_PUSHDATA_API, STB_VORBIS_NO_STDIO, STB_VORBIS_NO_INTEGER_CONVERSION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5538 0.90 - first public release
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5539 */
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5540
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5541 #endif // STB_VORBIS_HEADER_ONLY
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5542
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5543
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5544 /*
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5545 ------------------------------------------------------------------------------
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5546 This software is available under 2 licenses -- choose whichever you prefer.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5547 ------------------------------------------------------------------------------
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5548 ALTERNATIVE A - MIT License
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5549 Copyright (c) 2017 Sean Barrett
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5550 Permission is hereby granted, free of charge, to any person obtaining a copy of
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5551 this software and associated documentation files (the "Software"), to deal in
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5552 the Software without restriction, including without limitation the rights to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5553 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5554 of the Software, and to permit persons to whom the Software is furnished to do
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5555 so, subject to the following conditions:
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5556 The above copyright notice and this permission notice shall be included in all
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5557 copies or substantial portions of the Software.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5558 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5559 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5560 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5561 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5562 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5563 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5564 SOFTWARE.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5565 ------------------------------------------------------------------------------
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5566 ALTERNATIVE B - Public Domain (www.unlicense.org)
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5567 This is free and unencumbered software released into the public domain.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5568 Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5569 software, either in source code form or as a compiled binary, for any purpose,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5570 commercial or non-commercial, and by any means.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5571 In jurisdictions that recognize copyright laws, the author or authors of this
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5572 software dedicate any and all copyright interest in the software to the public
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5573 domain. We make this dedication for the benefit of the public at large and to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5574 the detriment of our heirs and successors. We intend this dedication to be an
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5575 overt act of relinquishment in perpetuity of all present and future rights to
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5576 this software under copyright law.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5577 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5578 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5579 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5580 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5581 ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5582 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5583 ------------------------------------------------------------------------------
44ec744fbedc did: package restructuring according to nimble recommendation for libraries Sam <sam@basx.dev> parents: diff changeset	5584 */

Mercurial > games > semicongine

annotate semiconginev2/audio/stb_vorbis.c @ 1225:27cd1c21290e compiletime-tests