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annotate semiconginev2/audio/stb_vorbis.c @ 1234:841e12f33c47

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add: text & font rendering, not tested yet
author sam <sam@basx.dev>
date Sat, 20 Jul 2024 00:03:57 +0700
parents 27cd1c21290e
children
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1 // Ogg Vorbis audio decoder - v1.22 - public domain
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2 // http://nothings.org/stb_vorbis/
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3 //
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4 // Original version written by Sean Barrett in 2007.
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5 //
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6 // Originally sponsored by RAD Game Tools. Seeking implementation
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7 // sponsored by Phillip Bennefall, Marc Andersen, Aaron Baker,
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8 // Elias Software, Aras Pranckevicius, and Sean Barrett.
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9 //
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10 // LICENSE
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11 //
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12 // See end of file for license information.
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13 //
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14 // Limitations:
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15 //
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16 // - floor 0 not supported (used in old ogg vorbis files pre-2004)
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17 // - lossless sample-truncation at beginning ignored
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18 // - cannot concatenate multiple vorbis streams
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19 // - sample positions are 32-bit, limiting seekable 192Khz
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20 // files to around 6 hours (Ogg supports 64-bit)
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21 //
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22 // Feature contributors:
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23 // Dougall Johnson (sample-exact seeking)
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24 //
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25 // Bugfix/warning contributors:
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26 // Terje Mathisen Niklas Frykholm Andy Hill
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27 // Casey Muratori John Bolton Gargaj
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28 // Laurent Gomila Marc LeBlanc Ronny Chevalier
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29 // Bernhard Wodo Evan Balster github:alxprd
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30 // Tom Beaumont Ingo Leitgeb Nicolas Guillemot
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31 // Phillip Bennefall Rohit Thiago Goulart
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32 // github:manxorist Saga Musix github:infatum
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33 // Timur Gagiev Maxwell Koo Peter Waller
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34 // github:audinowho Dougall Johnson David Reid
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35 // github:Clownacy Pedro J. Estebanez Remi Verschelde
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36 // AnthoFoxo github:morlat Gabriel Ravier
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37 //
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38 // Partial history:
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39 // 1.22 - 2021-07-11 - various small fixes
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40 // 1.21 - 2021-07-02 - fix bug for files with no comments
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41 // 1.20 - 2020-07-11 - several small fixes
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42 // 1.19 - 2020-02-05 - warnings
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43 // 1.18 - 2020-02-02 - fix seek bugs; parse header comments; misc warnings etc.
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44 // 1.17 - 2019-07-08 - fix CVE-2019-13217..CVE-2019-13223 (by ForAllSecure)
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45 // 1.16 - 2019-03-04 - fix warnings
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46 // 1.15 - 2019-02-07 - explicit failure if Ogg Skeleton data is found
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47 // 1.14 - 2018-02-11 - delete bogus dealloca usage
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48 // 1.13 - 2018-01-29 - fix truncation of last frame (hopefully)
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49 // 1.12 - 2017-11-21 - limit residue begin/end to blocksize/2 to avoid large temp allocs in bad/corrupt files
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50 // 1.11 - 2017-07-23 - fix MinGW compilation
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51 // 1.10 - 2017-03-03 - more robust seeking; fix negative ilog(); clear error in open_memory
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52 // 1.09 - 2016-04-04 - back out 'truncation of last frame' fix from previous version
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53 // 1.08 - 2016-04-02 - warnings; setup memory leaks; truncation of last frame
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54 // 1.07 - 2015-01-16 - fixes for crashes on invalid files; warning fixes; const
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55 // 1.06 - 2015-08-31 - full, correct support for seeking API (Dougall Johnson)
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56 // some crash fixes when out of memory or with corrupt files
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57 // fix some inappropriately signed shifts
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58 // 1.05 - 2015-04-19 - don't define __forceinline if it's redundant
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59 // 1.04 - 2014-08-27 - fix missing const-correct case in API
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60 // 1.03 - 2014-08-07 - warning fixes
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61 // 1.02 - 2014-07-09 - declare qsort comparison as explicitly _cdecl in Windows
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62 // 1.01 - 2014-06-18 - fix stb_vorbis_get_samples_float (interleaved was correct)
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63 // 1.0 - 2014-05-26 - fix memory leaks; fix warnings; fix bugs in >2-channel;
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64 // (API change) report sample rate for decode-full-file funcs
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65 //
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66 // See end of file for full version history.
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67
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68
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69 //////////////////////////////////////////////////////////////////////////////
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70 //
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71 // HEADER BEGINS HERE
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72 //
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73
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74 #ifndef STB_VORBIS_INCLUDE_STB_VORBIS_H
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75 #define STB_VORBIS_INCLUDE_STB_VORBIS_H
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76
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77 #if defined(STB_VORBIS_NO_CRT) && !defined(STB_VORBIS_NO_STDIO)
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78 #define STB_VORBIS_NO_STDIO 1
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79 #endif
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80
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81 #ifndef STB_VORBIS_NO_STDIO
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82 #include <stdio.h>
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83 #endif
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84
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85 #ifdef __cplusplus
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86 extern "C" {
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87 #endif
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88
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89 /////////// THREAD SAFETY
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90
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91 // Individual stb_vorbis* handles are not thread-safe; you cannot decode from
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92 // them from multiple threads at the same time. However, you can have multiple
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93 // stb_vorbis* handles and decode from them independently in multiple thrads.
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94
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95
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96 /////////// MEMORY ALLOCATION
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97
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98 // normally stb_vorbis uses malloc() to allocate memory at startup,
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99 // and alloca() to allocate temporary memory during a frame on the
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100 // stack. (Memory consumption will depend on the amount of setup
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101 // data in the file and how you set the compile flags for speed
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102 // vs. size. In my test files the maximal-size usage is ~150KB.)
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103 //
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104 // You can modify the wrapper functions in the source (setup_malloc,
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105 // setup_temp_malloc, temp_malloc) to change this behavior, or you
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106 // can use a simpler allocation model: you pass in a buffer from
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107 // which stb_vorbis will allocate _all_ its memory (including the
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108 // temp memory). "open" may fail with a VORBIS_outofmem if you
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109 // do not pass in enough data; there is no way to determine how
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110 // much you do need except to succeed (at which point you can
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111 // query get_info to find the exact amount required. yes I know
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112 // this is lame).
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113 //
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114 // If you pass in a non-NULL buffer of the type below, allocation
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115 // will occur from it as described above. Otherwise just pass NULL
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116 // to use malloc()/alloca()
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117
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118 typedef struct
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119 {
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120 char *alloc_buffer;
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121 int alloc_buffer_length_in_bytes;
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122 } stb_vorbis_alloc;
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123
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124
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125 /////////// FUNCTIONS USEABLE WITH ALL INPUT MODES
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126
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127 typedef struct stb_vorbis stb_vorbis;
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128
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129 typedef struct
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130 {
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131 unsigned int sample_rate;
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132 int channels;
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133
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134 unsigned int setup_memory_required;
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135 unsigned int setup_temp_memory_required;
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136 unsigned int temp_memory_required;
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137
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138 int max_frame_size;
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139 } stb_vorbis_info;
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140
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141 typedef struct
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142 {
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143 char *vendor;
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144
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145 int comment_list_length;
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146 char **comment_list;
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147 } stb_vorbis_comment;
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148
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149 // get general information about the file
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150 extern stb_vorbis_info stb_vorbis_get_info(stb_vorbis *f);
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151
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152 // get ogg comments
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153 extern stb_vorbis_comment stb_vorbis_get_comment(stb_vorbis *f);
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154
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155 // get the last error detected (clears it, too)
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156 extern int stb_vorbis_get_error(stb_vorbis *f);
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157
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158 // close an ogg vorbis file and free all memory in use
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159 extern void stb_vorbis_close(stb_vorbis *f);
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160
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161 // this function returns the offset (in samples) from the beginning of the
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162 // file that will be returned by the next decode, if it is known, or -1
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163 // otherwise. after a flush_pushdata() call, this may take a while before
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164 // it becomes valid again.
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165 // NOT WORKING YET after a seek with PULLDATA API
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166 extern int stb_vorbis_get_sample_offset(stb_vorbis *f);
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167
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168 // returns the current seek point within the file, or offset from the beginning
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169 // of the memory buffer. In pushdata mode it returns 0.
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170 extern unsigned int stb_vorbis_get_file_offset(stb_vorbis *f);
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171
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172 /////////// PUSHDATA API
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173
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174 #ifndef STB_VORBIS_NO_PUSHDATA_API
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175
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176 // this API allows you to get blocks of data from any source and hand
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177 // them to stb_vorbis. you have to buffer them; stb_vorbis will tell
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178 // you how much it used, and you have to give it the rest next time;
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179 // and stb_vorbis may not have enough data to work with and you will
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180 // need to give it the same data again PLUS more. Note that the Vorbis
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181 // specification does not bound the size of an individual frame.
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182
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183 extern stb_vorbis *stb_vorbis_open_pushdata(
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184 const unsigned char * datablock, int datablock_length_in_bytes,
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185 int *datablock_memory_consumed_in_bytes,
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186 int *error,
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187 const stb_vorbis_alloc *alloc_buffer);
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188 // create a vorbis decoder by passing in the initial data block containing
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189 // the ogg&vorbis headers (you don't need to do parse them, just provide
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190 // the first N bytes of the file--you're told if it's not enough, see below)
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191 // on success, returns an stb_vorbis *, does not set error, returns the amount of
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192 // data parsed/consumed on this call in *datablock_memory_consumed_in_bytes;
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193 // on failure, returns NULL on error and sets *error, does not change *datablock_memory_consumed
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194 // if returns NULL and *error is VORBIS_need_more_data, then the input block was
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195 // incomplete and you need to pass in a larger block from the start of the file
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196
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197 extern int stb_vorbis_decode_frame_pushdata(
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198 stb_vorbis *f,
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199 const unsigned char *datablock, int datablock_length_in_bytes,
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200 int *channels, // place to write number of float * buffers
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201 float ***output, // place to write float ** array of float * buffers
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202 int *samples // place to write number of output samples
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203 );
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204 // decode a frame of audio sample data if possible from the passed-in data block
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205 //
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206 // return value: number of bytes we used from datablock
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207 //
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208 // possible cases:
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209 // 0 bytes used, 0 samples output (need more data)
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210 // N bytes used, 0 samples output (resynching the stream, keep going)
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211 // N bytes used, M samples output (one frame of data)
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212 // note that after opening a file, you will ALWAYS get one N-bytes,0-sample
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213 // frame, because Vorbis always "discards" the first frame.
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214 //
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215 // Note that on resynch, stb_vorbis will rarely consume all of the buffer,
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216 // instead only datablock_length_in_bytes-3 or less. This is because it wants
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217 // to avoid missing parts of a page header if they cross a datablock boundary,
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218 // without writing state-machiney code to record a partial detection.
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219 //
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220 // The number of channels returned are stored in *channels (which can be
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221 // NULL--it is always the same as the number of channels reported by
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222 // get_info). *output will contain an array of float* buffers, one per
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223 // channel. In other words, (*output)[0][0] contains the first sample from
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224 // the first channel, and (*output)[1][0] contains the first sample from
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225 // the second channel.
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226 //
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227 // *output points into stb_vorbis's internal output buffer storage; these
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228 // buffers are owned by stb_vorbis and application code should not free
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229 // them or modify their contents. They are transient and will be overwritten
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230 // once you ask for more data to get decoded, so be sure to grab any data
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231 // you need before then.
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232
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233 extern void stb_vorbis_flush_pushdata(stb_vorbis *f);
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234 // inform stb_vorbis that your next datablock will not be contiguous with
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235 // previous ones (e.g. you've seeked in the data); future attempts to decode
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236 // frames will cause stb_vorbis to resynchronize (as noted above), and
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237 // once it sees a valid Ogg page (typically 4-8KB, as large as 64KB), it
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238 // will begin decoding the _next_ frame.
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239 //
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240 // if you want to seek using pushdata, you need to seek in your file, then
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241 // call stb_vorbis_flush_pushdata(), then start calling decoding, then once
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242 // decoding is returning you data, call stb_vorbis_get_sample_offset, and
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243 // if you don't like the result, seek your file again and repeat.
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244 #endif
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245
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246
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247 ////////// PULLING INPUT API
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248
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249 #ifndef STB_VORBIS_NO_PULLDATA_API
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250 // This API assumes stb_vorbis is allowed to pull data from a source--
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251 // either a block of memory containing the _entire_ vorbis stream, or a
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252 // FILE * that you or it create, or possibly some other reading mechanism
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253 // if you go modify the source to replace the FILE * case with some kind
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254 // of callback to your code. (But if you don't support seeking, you may
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255 // just want to go ahead and use pushdata.)
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256
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257 #if !defined(STB_VORBIS_NO_STDIO) && !defined(STB_VORBIS_NO_INTEGER_CONVERSION)
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258 extern int stb_vorbis_decode_filename(const char *filename, int *channels, int *sample_rate, short **output);
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259 #endif
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260 #if !defined(STB_VORBIS_NO_INTEGER_CONVERSION)
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261 extern int stb_vorbis_decode_memory(const unsigned char *mem, int len, int *channels, int *sample_rate, short **output);
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262 #endif
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263 // decode an entire file and output the data interleaved into a malloc()ed
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264 // buffer stored in *output. The return value is the number of samples
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265 // decoded, or -1 if the file could not be opened or was not an ogg vorbis file.
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266 // When you're done with it, just free() the pointer returned in *output.
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267
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268 extern stb_vorbis * stb_vorbis_open_memory(const unsigned char *data, int len,
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269 int *error, const stb_vorbis_alloc *alloc_buffer);
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270 // create an ogg vorbis decoder from an ogg vorbis stream in memory (note
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271 // this must be the entire stream!). on failure, returns NULL and sets *error
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272
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273 #ifndef STB_VORBIS_NO_STDIO
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274 extern stb_vorbis * stb_vorbis_open_filename(const char *filename,
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275 int *error, const stb_vorbis_alloc *alloc_buffer);
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276 // create an ogg vorbis decoder from a filename via fopen(). on failure,
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277 // returns NULL and sets *error (possibly to VORBIS_file_open_failure).
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278
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279 extern stb_vorbis * stb_vorbis_open_file(FILE *f, int close_handle_on_close,
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280 int *error, const stb_vorbis_alloc *alloc_buffer);
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281 // create an ogg vorbis decoder from an open FILE *, looking for a stream at
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282 // the _current_ seek point (ftell). on failure, returns NULL and sets *error.
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283 // note that stb_vorbis must "own" this stream; if you seek it in between
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284 // calls to stb_vorbis, it will become confused. Moreover, if you attempt to
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285 // perform stb_vorbis_seek_*() operations on this file, it will assume it
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286 // owns the _entire_ rest of the file after the start point. Use the next
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287 // function, stb_vorbis_open_file_section(), to limit it.
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288
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289 extern stb_vorbis * stb_vorbis_open_file_section(FILE *f, int close_handle_on_close,
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290 int *error, const stb_vorbis_alloc *alloc_buffer, unsigned int len);
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291 // create an ogg vorbis decoder from an open FILE *, looking for a stream at
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292 // the _current_ seek point (ftell); the stream will be of length 'len' bytes.
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293 // on failure, returns NULL and sets *error. note that stb_vorbis must "own"
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294 // this stream; if you seek it in between calls to stb_vorbis, it will become
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295 // confused.
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296 #endif
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297
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298 extern int stb_vorbis_seek_frame(stb_vorbis *f, unsigned int sample_number);
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299 extern int stb_vorbis_seek(stb_vorbis *f, unsigned int sample_number);
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300 // these functions seek in the Vorbis file to (approximately) 'sample_number'.
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301 // after calling seek_frame(), the next call to get_frame_*() will include
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302 // the specified sample. after calling stb_vorbis_seek(), the next call to
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303 // stb_vorbis_get_samples_* will start with the specified sample. If you
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304 // do not need to seek to EXACTLY the target sample when using get_samples_*,
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305 // you can also use seek_frame().
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306
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307 extern int stb_vorbis_seek_start(stb_vorbis *f);
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308 // this function is equivalent to stb_vorbis_seek(f,0)
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309
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310 extern unsigned int stb_vorbis_stream_length_in_samples(stb_vorbis *f);
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311 extern float stb_vorbis_stream_length_in_seconds(stb_vorbis *f);
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312 // these functions return the total length of the vorbis stream
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313
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314 extern int stb_vorbis_get_frame_float(stb_vorbis *f, int *channels, float ***output);
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315 // decode the next frame and return the number of samples. the number of
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316 // channels returned are stored in *channels (which can be NULL--it is always
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317 // the same as the number of channels reported by get_info). *output will
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318 // contain an array of float* buffers, one per channel. These outputs will
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319 // be overwritten on the next call to stb_vorbis_get_frame_*.
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320 //
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321 // You generally should not intermix calls to stb_vorbis_get_frame_*()
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322 // and stb_vorbis_get_samples_*(), since the latter calls the former.
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323
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324 #ifndef STB_VORBIS_NO_INTEGER_CONVERSION
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325 extern int stb_vorbis_get_frame_short_interleaved(stb_vorbis *f, int num_c, short *buffer, int num_shorts);
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326 extern int stb_vorbis_get_frame_short (stb_vorbis *f, int num_c, short **buffer, int num_samples);
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327 #endif
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328 // decode the next frame and return the number of *samples* per channel.
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329 // Note that for interleaved data, you pass in the number of shorts (the
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330 // size of your array), but the return value is the number of samples per
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331 // channel, not the total number of samples.
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332 //
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333 // The data is coerced to the number of channels you request according to the
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334 // channel coercion rules (see below). You must pass in the size of your
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335 // buffer(s) so that stb_vorbis will not overwrite the end of the buffer.
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336 // The maximum buffer size needed can be gotten from get_info(); however,
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337 // the Vorbis I specification implies an absolute maximum of 4096 samples
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338 // per channel.
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339
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340 // Channel coercion rules:
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341 // Let M be the number of channels requested, and N the number of channels present,
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342 // and Cn be the nth channel; let stereo L be the sum of all L and center channels,
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343 // and stereo R be the sum of all R and center channels (channel assignment from the
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344 // vorbis spec).
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345 // M N output
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346 // 1 k sum(Ck) for all k
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347 // 2 * stereo L, stereo R
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348 // k l k > l, the first l channels, then 0s
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349 // k l k <= l, the first k channels
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350 // Note that this is not _good_ surround etc. mixing at all! It's just so
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351 // you get something useful.
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352
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353 extern int stb_vorbis_get_samples_float_interleaved(stb_vorbis *f, int channels, float *buffer, int num_floats);
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354 extern int stb_vorbis_get_samples_float(stb_vorbis *f, int channels, float **buffer, int num_samples);
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355 // gets num_samples samples, not necessarily on a frame boundary--this requires
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356 // buffering so you have to supply the buffers. DOES NOT APPLY THE COERCION RULES.
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357 // Returns the number of samples stored per channel; it may be less than requested
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358 // at the end of the file. If there are no more samples in the file, returns 0.
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359
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360 #ifndef STB_VORBIS_NO_INTEGER_CONVERSION
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361 extern int stb_vorbis_get_samples_short_interleaved(stb_vorbis *f, int channels, short *buffer, int num_shorts);
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362 extern int stb_vorbis_get_samples_short(stb_vorbis *f, int channels, short **buffer, int num_samples);
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363 #endif
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364 // gets num_samples samples, not necessarily on a frame boundary--this requires
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365 // buffering so you have to supply the buffers. Applies the coercion rules above
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366 // to produce 'channels' channels. Returns the number of samples stored per channel;
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367 // it may be less than requested at the end of the file. If there are no more
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368 // samples in the file, returns 0.
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369
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370 #endif
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371
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372 //////// ERROR CODES
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373
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374 enum STBVorbisError
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375 {
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376 VORBIS__no_error,
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377
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378 VORBIS_need_more_data=1, // not a real error
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379
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380 VORBIS_invalid_api_mixing, // can't mix API modes
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381 VORBIS_outofmem, // not enough memory
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382 VORBIS_feature_not_supported, // uses floor 0
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383 VORBIS_too_many_channels, // STB_VORBIS_MAX_CHANNELS is too small
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384 VORBIS_file_open_failure, // fopen() failed
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385 VORBIS_seek_without_length, // can't seek in unknown-length file
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386
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387 VORBIS_unexpected_eof=10, // file is truncated?
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388 VORBIS_seek_invalid, // seek past EOF
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389
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390 // decoding errors (corrupt/invalid stream) -- you probably
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391 // don't care about the exact details of these
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392
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393 // vorbis errors:
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394 VORBIS_invalid_setup=20,
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395 VORBIS_invalid_stream,
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396
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397 // ogg errors:
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398 VORBIS_missing_capture_pattern=30,
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399 VORBIS_invalid_stream_structure_version,
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400 VORBIS_continued_packet_flag_invalid,
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401 VORBIS_incorrect_stream_serial_number,
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402 VORBIS_invalid_first_page,
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403 VORBIS_bad_packet_type,
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404 VORBIS_cant_find_last_page,
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405 VORBIS_seek_failed,
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406 VORBIS_ogg_skeleton_not_supported
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407 };
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408
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409
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410 #ifdef __cplusplus
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411 }
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412 #endif
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413
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414 #endif // STB_VORBIS_INCLUDE_STB_VORBIS_H
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415 //
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416 // HEADER ENDS HERE
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417 //
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418 //////////////////////////////////////////////////////////////////////////////
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419
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420 #ifndef STB_VORBIS_HEADER_ONLY
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421
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422 // global configuration settings (e.g. set these in the project/makefile),
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423 // or just set them in this file at the top (although ideally the first few
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424 // should be visible when the header file is compiled too, although it's not
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425 // crucial)
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426
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427 // STB_VORBIS_NO_PUSHDATA_API
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428 // does not compile the code for the various stb_vorbis_*_pushdata()
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429 // functions
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430 // #define STB_VORBIS_NO_PUSHDATA_API
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431
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432 // STB_VORBIS_NO_PULLDATA_API
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433 // does not compile the code for the non-pushdata APIs
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434 // #define STB_VORBIS_NO_PULLDATA_API
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435
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436 // STB_VORBIS_NO_STDIO
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437 // does not compile the code for the APIs that use FILE *s internally
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438 // or externally (implied by STB_VORBIS_NO_PULLDATA_API)
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439 // #define STB_VORBIS_NO_STDIO
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440
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441 // STB_VORBIS_NO_INTEGER_CONVERSION
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442 // does not compile the code for converting audio sample data from
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443 // float to integer (implied by STB_VORBIS_NO_PULLDATA_API)
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444 // #define STB_VORBIS_NO_INTEGER_CONVERSION
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445
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446 // STB_VORBIS_NO_FAST_SCALED_FLOAT
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447 // does not use a fast float-to-int trick to accelerate float-to-int on
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diff changeset
448 // most platforms which requires endianness be defined correctly.
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Sam <sam@basx.dev>
parents:
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449 //#define STB_VORBIS_NO_FAST_SCALED_FLOAT
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Sam <sam@basx.dev>
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diff changeset
450
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Sam <sam@basx.dev>
parents:
diff changeset
451
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
Sam <sam@basx.dev>
parents:
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452 // STB_VORBIS_MAX_CHANNELS [number]
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Sam <sam@basx.dev>
parents:
diff changeset
453 // globally define this to the maximum number of channels you need.
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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:
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455 // the count is stored in a byte, so 255 is the hard limit.
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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
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Sam <sam@basx.dev>
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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
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Sam <sam@basx.dev>
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461 #define STB_VORBIS_MAX_CHANNELS 16 // enough for anyone?
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Sam <sam@basx.dev>
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462 #endif
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Sam <sam@basx.dev>
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diff changeset
463
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Sam <sam@basx.dev>
parents:
diff changeset
464 // STB_VORBIS_PUSHDATA_CRC_COUNT [number]
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Sam <sam@basx.dev>
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diff changeset
465 // after a flush_pushdata(), stb_vorbis begins scanning for the
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Sam <sam@basx.dev>
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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:
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467 // that looks like a page, it streams through it and verifies its
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Sam <sam@basx.dev>
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468 // CRC32. Should that validation fail, it keeps scanning. But it's
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Sam <sam@basx.dev>
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469 // possible that _while_ streaming through to check the CRC32 of
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Sam <sam@basx.dev>
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470 // one candidate page, it sees another candidate page. This #define
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Sam <sam@basx.dev>
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471 // determines how many "overlapping" candidate pages it can search
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Sam <sam@basx.dev>
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472 // at once. Note that "real" pages are typically ~4KB to ~8KB, whereas
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Sam <sam@basx.dev>
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diff changeset
473 // garbage pages could be as big as 64KB, but probably average ~16KB.
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Sam <sam@basx.dev>
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474 // So don't hose ourselves by scanning an apparent 64KB page and
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Sam <sam@basx.dev>
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475 // missing a ton of real ones in the interim; so minimum of 2
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Sam <sam@basx.dev>
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476 #ifndef STB_VORBIS_PUSHDATA_CRC_COUNT
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477 #define STB_VORBIS_PUSHDATA_CRC_COUNT 4
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478 #endif
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Sam <sam@basx.dev>
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479
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480 // STB_VORBIS_FAST_HUFFMAN_LENGTH [number]
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Sam <sam@basx.dev>
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diff changeset
481 // sets the log size of the huffman-acceleration table. Maximum
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Sam <sam@basx.dev>
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482 // supported value is 24. with larger numbers, more decodings are O(1),
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Sam <sam@basx.dev>
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483 // but the table size is larger so worse cache missing, so you'll have
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Sam <sam@basx.dev>
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484 // to probe (and try multiple ogg vorbis files) to find the sweet spot.
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485 #ifndef STB_VORBIS_FAST_HUFFMAN_LENGTH
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486 #define STB_VORBIS_FAST_HUFFMAN_LENGTH 10
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487 #endif
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488
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489 // STB_VORBIS_FAST_BINARY_LENGTH [number]
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Sam <sam@basx.dev>
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490 // sets the log size of the binary-search acceleration table. this
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Sam <sam@basx.dev>
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491 // is used in similar fashion to the fast-huffman size to set initial
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Sam <sam@basx.dev>
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492 // parameters for the binary search
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Sam <sam@basx.dev>
parents:
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493
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494 // STB_VORBIS_FAST_HUFFMAN_INT
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Sam <sam@basx.dev>
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495 // The fast huffman tables are much more efficient if they can be
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Sam <sam@basx.dev>
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496 // stored as 16-bit results instead of 32-bit results. This restricts
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497 // the codebooks to having only 65535 possible outcomes, though.
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498 // (At least, accelerated by the huffman table.)
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Sam <sam@basx.dev>
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499 #ifndef STB_VORBIS_FAST_HUFFMAN_INT
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500 #define STB_VORBIS_FAST_HUFFMAN_SHORT
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501 #endif
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502
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Sam <sam@basx.dev>
parents:
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503 // STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH
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Sam <sam@basx.dev>
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504 // If the 'fast huffman' search doesn't succeed, then stb_vorbis falls
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Sam <sam@basx.dev>
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505 // back on binary searching for the correct one. This requires storing
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Sam <sam@basx.dev>
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diff changeset
506 // extra tables with the huffman codes in sorted order. Defining this
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Sam <sam@basx.dev>
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diff changeset
507 // symbol trades off space for speed by forcing a linear search in the
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Sam <sam@basx.dev>
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508 // non-fast case, except for "sparse" codebooks.
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Sam <sam@basx.dev>
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diff changeset
509 // #define STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH
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Sam <sam@basx.dev>
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diff changeset
510
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Sam <sam@basx.dev>
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511 // STB_VORBIS_DIVIDES_IN_RESIDUE
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Sam <sam@basx.dev>
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512 // stb_vorbis precomputes the result of the scalar residue decoding
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Sam <sam@basx.dev>
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513 // that would otherwise require a divide per chunk. you can trade off
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Sam <sam@basx.dev>
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514 // space for time by defining this symbol.
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Sam <sam@basx.dev>
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515 // #define STB_VORBIS_DIVIDES_IN_RESIDUE
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516
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517 // STB_VORBIS_DIVIDES_IN_CODEBOOK
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Sam <sam@basx.dev>
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diff changeset
518 // vorbis VQ codebooks can be encoded two ways: with every case explicitly
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Sam <sam@basx.dev>
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519 // stored, or with all elements being chosen from a small range of values,
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Sam <sam@basx.dev>
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520 // and all values possible in all elements. By default, stb_vorbis expands
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Sam <sam@basx.dev>
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521 // this latter kind out to look like the former kind for ease of decoding,
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Sam <sam@basx.dev>
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522 // because otherwise an integer divide-per-vector-element is required to
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Sam <sam@basx.dev>
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523 // unpack the index. If you define STB_VORBIS_DIVIDES_IN_CODEBOOK, you can
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Sam <sam@basx.dev>
parents:
diff changeset
524 // trade off storage for speed.
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Sam <sam@basx.dev>
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525 //#define STB_VORBIS_DIVIDES_IN_CODEBOOK
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Sam <sam@basx.dev>
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526
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527 #ifdef STB_VORBIS_CODEBOOK_SHORTS
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528 #error "STB_VORBIS_CODEBOOK_SHORTS is no longer supported as it produced incorrect results for some input formats"
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Sam <sam@basx.dev>
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529 #endif
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Sam <sam@basx.dev>
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diff changeset
530
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Sam <sam@basx.dev>
parents:
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531 // STB_VORBIS_DIVIDE_TABLE
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Sam <sam@basx.dev>
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532 // this replaces small integer divides in the floor decode loop with
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Sam <sam@basx.dev>
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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
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Sam <sam@basx.dev>
parents:
diff changeset
535 // STB_VORBIS_NO_INLINE_DECODE
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Sam <sam@basx.dev>
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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:
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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
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Sam <sam@basx.dev>
parents:
diff changeset
544 // you'd ever want to do it except for debugging.
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Sam <sam@basx.dev>
parents:
diff changeset
545 // #define STB_VORBIS_NO_DEFER_FLOOR
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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>
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diff changeset
549
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
Sam <sam@basx.dev>
parents:
diff changeset
550 //////////////////////////////////////////////////////////////////////////////
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Sam <sam@basx.dev>
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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
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Sam <sam@basx.dev>
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diff changeset
553 #define STB_VORBIS_NO_INTEGER_CONVERSION
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Sam <sam@basx.dev>
parents:
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554 #define STB_VORBIS_NO_STDIO
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Sam <sam@basx.dev>
parents:
diff changeset
555 #endif
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
Sam <sam@basx.dev>
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diff changeset
556
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
Sam <sam@basx.dev>
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diff changeset
557 #if defined(STB_VORBIS_NO_CRT) && !defined(STB_VORBIS_NO_STDIO)
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Sam <sam@basx.dev>
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558 #define STB_VORBIS_NO_STDIO 1
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Sam <sam@basx.dev>
parents:
diff changeset
559 #endif
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Sam <sam@basx.dev>
parents:
diff changeset
560
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Sam <sam@basx.dev>
parents:
diff changeset
561 #ifndef STB_VORBIS_NO_INTEGER_CONVERSION
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Sam <sam@basx.dev>
parents:
diff changeset
562 #ifndef STB_VORBIS_NO_FAST_SCALED_FLOAT
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Sam <sam@basx.dev>
parents:
diff changeset
563
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Sam <sam@basx.dev>
parents:
diff changeset
564 // only need endianness for fast-float-to-int, which we don't
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Sam <sam@basx.dev>
parents:
diff changeset
565 // use for pushdata
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Sam <sam@basx.dev>
parents:
diff changeset
566
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Sam <sam@basx.dev>
parents:
diff changeset
567 #ifndef STB_VORBIS_BIG_ENDIAN
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Sam <sam@basx.dev>
parents:
diff changeset
568 #define STB_VORBIS_ENDIAN 0
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Sam <sam@basx.dev>
parents:
diff changeset
569 #else
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Sam <sam@basx.dev>
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570 #define STB_VORBIS_ENDIAN 1
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Sam <sam@basx.dev>
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diff changeset
571 #endif
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Sam <sam@basx.dev>
parents:
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572
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Sam <sam@basx.dev>
parents:
diff changeset
573 #endif
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Sam <sam@basx.dev>
parents:
diff changeset
574 #endif
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Sam <sam@basx.dev>
parents:
diff changeset
575
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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
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Sam <sam@basx.dev>
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diff changeset
578 #include <stdio.h>
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Sam <sam@basx.dev>
parents:
diff changeset
579 #endif
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Sam <sam@basx.dev>
parents:
diff changeset
580
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Sam <sam@basx.dev>
parents:
diff changeset
581 #ifndef STB_VORBIS_NO_CRT
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Sam <sam@basx.dev>
parents:
diff changeset
582 #include <stdlib.h>
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Sam <sam@basx.dev>
parents:
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583 #include <string.h>
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Sam <sam@basx.dev>
parents:
diff changeset
584 #include <assert.h>
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Sam <sam@basx.dev>
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585 #include <math.h>
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Sam <sam@basx.dev>
parents:
diff changeset
586
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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__)
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Sam <sam@basx.dev>
parents:
diff changeset
589 #include <malloc.h>
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Sam <sam@basx.dev>
parents:
diff changeset
590 #endif
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Sam <sam@basx.dev>
parents:
diff changeset
591 #if defined(__linux__) || defined(__linux) || defined(__sun__) || defined(__EMSCRIPTEN__) || defined(__NEWLIB__)
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Sam <sam@basx.dev>
parents:
diff changeset
592 #include <alloca.h>
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Sam <sam@basx.dev>
parents:
diff changeset
593 #endif
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Sam <sam@basx.dev>
parents:
diff changeset
594 #else // STB_VORBIS_NO_CRT
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Sam <sam@basx.dev>
parents:
diff changeset
595 #define NULL 0
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Sam <sam@basx.dev>
parents:
diff changeset
596 #define malloc(s) 0
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Sam <sam@basx.dev>
parents:
diff changeset
597 #define free(s) ((void) 0)
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Sam <sam@basx.dev>
parents:
diff changeset
598 #define realloc(s) 0
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Sam <sam@basx.dev>
parents:
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599 #endif // STB_VORBIS_NO_CRT
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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>
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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__
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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
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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>
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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;
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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
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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
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Sam <sam@basx.dev>
parents:
diff changeset
659 #define STBV_NOTUSED(v) (void)(v)
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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;
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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
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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
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diff changeset
770 typedef struct
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771 {
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772 uint32 goal_crc; // expected crc if match
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diff changeset
773 int bytes_left; // bytes left in packet
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diff changeset
774 uint32 crc_so_far; // running crc
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diff changeset
775 int bytes_done; // bytes processed in _current_ chunk
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776 uint32 sample_loc; // granule pos encoded in page
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777 } CRCscan;
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diff changeset
778
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diff changeset
779 typedef struct
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diff changeset
780 {
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781 uint32 page_start, page_end;
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diff changeset
782 uint32 last_decoded_sample;
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783 } ProbedPage;
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diff changeset
784
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785 struct stb_vorbis
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diff changeset
786 {
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787 // user-accessible info
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diff changeset
788 unsigned int sample_rate;
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diff changeset
789 int channels;
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diff changeset
790
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791 unsigned int setup_memory_required;
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diff changeset
792 unsigned int temp_memory_required;
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793 unsigned int setup_temp_memory_required;
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794
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795 char *vendor;
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796 int comment_list_length;
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797 char **comment_list;
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798
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diff changeset
799 // input config
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800 #ifndef STB_VORBIS_NO_STDIO
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801 FILE *f;
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802 uint32 f_start;
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803 int close_on_free;
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804 #endif
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805
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806 uint8 *stream;
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807 uint8 *stream_start;
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808 uint8 *stream_end;
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diff changeset
809
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810 uint32 stream_len;
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diff changeset
811
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812 uint8 push_mode;
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813
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814 // the page to seek to when seeking to start, may be zero
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815 uint32 first_audio_page_offset;
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diff changeset
816
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817 // p_first is the page on which the first audio packet ends
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818 // (but not necessarily the page on which it starts)
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819 ProbedPage p_first, p_last;
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820
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821 // memory management
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822 stb_vorbis_alloc alloc;
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823 int setup_offset;
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824 int temp_offset;
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825
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826 // run-time results
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827 int eof;
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828 enum STBVorbisError error;
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829
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830 // user-useful data
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831
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832 // header info
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833 int blocksize[2];
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834 int blocksize_0, blocksize_1;
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835 int codebook_count;
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836 Codebook *codebooks;
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837 int floor_count;
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838 uint16 floor_types[64]; // varies
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839 Floor *floor_config;
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840 int residue_count;
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841 uint16 residue_types[64]; // varies
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842 Residue *residue_config;
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843 int mapping_count;
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844 Mapping *mapping;
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845 int mode_count;
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846 Mode mode_config[64]; // varies
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847
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848 uint32 total_samples;
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849
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850 // decode buffer
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851 float *channel_buffers[STB_VORBIS_MAX_CHANNELS];
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852 float *outputs [STB_VORBIS_MAX_CHANNELS];
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853
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854 float *previous_window[STB_VORBIS_MAX_CHANNELS];
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855 int previous_length;
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856
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857 #ifndef STB_VORBIS_NO_DEFER_FLOOR
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858 int16 *finalY[STB_VORBIS_MAX_CHANNELS];
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859 #else
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860 float *floor_buffers[STB_VORBIS_MAX_CHANNELS];
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861 #endif
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862
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863 uint32 current_loc; // sample location of next frame to decode
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864 int current_loc_valid;
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865
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866 // per-blocksize precomputed data
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867
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868 // twiddle factors
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869 float *A[2],*B[2],*C[2];
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870 float *window[2];
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871 uint16 *bit_reverse[2];
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872
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873 // current page/packet/segment streaming info
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874 uint32 serial; // stream serial number for verification
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875 int last_page;
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876 int segment_count;
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877 uint8 segments[255];
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878 uint8 page_flag;
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879 uint8 bytes_in_seg;
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880 uint8 first_decode;
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881 int next_seg;
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882 int last_seg; // flag that we're on the last segment
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883 int last_seg_which; // what was the segment number of the last seg?
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884 uint32 acc;
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885 int valid_bits;
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886 int packet_bytes;
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887 int end_seg_with_known_loc;
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888 uint32 known_loc_for_packet;
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889 int discard_samples_deferred;
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890 uint32 samples_output;
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diff changeset
891
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892 // push mode scanning
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893 int page_crc_tests; // only in push_mode: number of tests active; -1 if not searching
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894 #ifndef STB_VORBIS_NO_PUSHDATA_API
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895 CRCscan scan[STB_VORBIS_PUSHDATA_CRC_COUNT];
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896 #endif
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diff changeset
897
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898 // sample-access
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899 int channel_buffer_start;
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900 int channel_buffer_end;
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901 };
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diff changeset
902
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903 #if defined(STB_VORBIS_NO_PUSHDATA_API)
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904 #define IS_PUSH_MODE(f) FALSE
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905 #elif defined(STB_VORBIS_NO_PULLDATA_API)
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906 #define IS_PUSH_MODE(f) TRUE
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907 #else
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908 #define IS_PUSH_MODE(f) ((f)->push_mode)
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909 #endif
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diff changeset
910
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911 typedef struct stb_vorbis vorb;
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912
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913 static int error(vorb *f, enum STBVorbisError e)
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914 {
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915 f->error = e;
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916 if (!f->eof && e != VORBIS_need_more_data) {
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917 f->error=e; // breakpoint for debugging
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918 }
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919 return 0;
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920 }
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diff changeset
921
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diff changeset
922
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923 // these functions are used for allocating temporary memory
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924 // while decoding. if you can afford the stack space, use
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925 // alloca(); otherwise, provide a temp buffer and it will
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parents:
diff changeset
926 // allocate out of those.
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diff changeset
927
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928 #define array_size_required(count,size) (count*(sizeof(void *)+(size)))
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diff changeset
929
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930 #define temp_alloc(f,size) (f->alloc.alloc_buffer ? setup_temp_malloc(f,size) : alloca(size))
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diff changeset
931 #define temp_free(f,p) (void)0
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932 #define temp_alloc_save(f) ((f)->temp_offset)
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933 #define temp_alloc_restore(f,p) ((f)->temp_offset = (p))
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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(4*k*M_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(4*k*M_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 (len*ch), our current offset within it (p_inter*ch)+(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_inter*ch + effective > len * ch) {
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
Sam <sam@basx.dev>
parents:
diff changeset
1891 effective = len*ch - (p_inter*ch - 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)*(2*j+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)*(2*j+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)*(2*j+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)*(2*j+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_21*AA[4] - v40_20*AA[5];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
Sam <sam@basx.dev>
parents:
diff changeset
2711 d1[0] = v40_20*AA[4] + v41_21*AA[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_21*AA[0] - v40_20*AA[1];
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
Sam <sam@basx.dev>
parents:
diff changeset
2718 d1[2] = v40_20*AA[0] + v41_21*AA[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(4*k*M_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(4*k*M_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-k0*s2-r4] = w[n-1-k0*s2-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-k0*s2-r4] = w[n-3-k0*s2-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-k0*s2-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-k0*s2-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-k0*s2-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-k0*s2-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 = (n*3 - 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 = (n*3 + 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
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5482 found with Mayhem by ForAllSecure
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5483 1.16 - 2019-03-04 - fix warnings
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5484 1.15 - 2019-02-07 - explicit failure if Ogg Skeleton data is found
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5485 1.14 - 2018-02-11 - delete bogus dealloca usage
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5486 1.13 - 2018-01-29 - fix truncation of last frame (hopefully)
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5487 1.12 - 2017-11-21 - limit residue begin/end to blocksize/2 to avoid large temp allocs in bad/corrupt files
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5488 1.11 - 2017-07-23 - fix MinGW compilation
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5489 1.10 - 2017-03-03 - more robust seeking; fix negative ilog(); clear error in open_memory
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5490 1.09 - 2016-04-04 - back out 'avoid discarding last frame' fix from previous version
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5491 1.08 - 2016-04-02 - fixed multiple warnings; fix setup memory leaks;
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5492 avoid discarding last frame of audio data
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5493 1.07 - 2015-01-16 - fixed some warnings, fix mingw, const-correct API
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5494 some more crash fixes when out of memory or with corrupt files
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5495 1.06 - 2015-08-31 - full, correct support for seeking API (Dougall Johnson)
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5496 some crash fixes when out of memory or with corrupt files
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5497 1.05 - 2015-04-19 - don't define __forceinline if it's redundant
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5498 1.04 - 2014-08-27 - fix missing const-correct case in API
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5499 1.03 - 2014-08-07 - Warning fixes
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5500 1.02 - 2014-07-09 - Declare qsort compare function _cdecl on windows
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5501 1.01 - 2014-06-18 - fix stb_vorbis_get_samples_float
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5502 1.0 - 2014-05-26 - fix memory leaks; fix warnings; fix bugs in multichannel
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5503 (API change) report sample rate for decode-full-file funcs
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5504 0.99996 - bracket #include <malloc.h> for macintosh compilation by Laurent Gomila
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5505 0.99995 - use union instead of pointer-cast for fast-float-to-int to avoid alias-optimization problem
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5506 0.99994 - change fast-float-to-int to work in single-precision FPU mode, remove endian-dependence
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5507 0.99993 - remove assert that fired on legal files with empty tables
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5508 0.99992 - rewind-to-start
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5509 0.99991 - bugfix to stb_vorbis_get_samples_short by Bernhard Wodo
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5510 0.9999 - (should have been 0.99990) fix no-CRT support, compiling as C++
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5511 0.9998 - add a full-decode function with a memory source
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5512 0.9997 - fix a bug in the read-from-FILE case in 0.9996 addition
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5513 0.9996 - query length of vorbis stream in samples/seconds
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5514 0.9995 - bugfix to another optimization that only happened in certain files
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5515 0.9994 - bugfix to one of the optimizations that caused significant (but inaudible?) errors
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5516 0.9993 - performance improvements; runs in 99% to 104% of time of reference implementation
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5517 0.9992 - performance improvement of IMDCT; now performs close to reference implementation
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5518 0.9991 - performance improvement of IMDCT
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5519 0.999 - (should have been 0.9990) performance improvement of IMDCT
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5520 0.998 - no-CRT support from Casey Muratori
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5521 0.997 - bugfixes for bugs found by Terje Mathisen
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5522 0.996 - bugfix: fast-huffman decode initialized incorrectly for sparse codebooks; fixing gives 10% speedup - found by Terje Mathisen
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5523 0.995 - bugfix: fix to 'effective' overrun detection - found by Terje Mathisen
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5524 0.994 - bugfix: garbage decode on final VQ symbol of a non-multiple - found by Terje Mathisen
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5525 0.993 - bugfix: pushdata API required 1 extra byte for empty page (failed to consume final page if empty) - found by Terje Mathisen
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5526 0.992 - fixes for MinGW warning
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5527 0.991 - turn fast-float-conversion on by default
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5528 0.990 - fix push-mode seek recovery if you seek into the headers
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Sam <sam@basx.dev>
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5529 0.98b - fix to bad release of 0.98
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5530 0.98 - fix push-mode seek recovery; robustify float-to-int and support non-fast mode
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5531 0.97 - builds under c++ (typecasting, don't use 'class' keyword)
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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
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5533 0.95 - clamping code for 16-bit functions
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5534 0.94 - not publically released
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5535 0.93 - fixed all-zero-floor case (was decoding garbage)
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5536 0.92 - fixed a memory leak
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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
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5538 0.90 - first public release
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5539 */
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5540
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5541 #endif // STB_VORBIS_HEADER_ONLY
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5542
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5543
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5544 /*
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5545 ------------------------------------------------------------------------------
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5546 This software is available under 2 licenses -- choose whichever you prefer.
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5547 ------------------------------------------------------------------------------
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5548 ALTERNATIVE A - MIT License
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5549 Copyright (c) 2017 Sean Barrett
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5550 Permission is hereby granted, free of charge, to any person obtaining a copy of
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5551 this software and associated documentation files (the "Software"), to deal in
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5552 the Software without restriction, including without limitation the rights to
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5553 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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5554 of the Software, and to permit persons to whom the Software is furnished to do
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5555 so, subject to the following conditions:
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5556 The above copyright notice and this permission notice shall be included in all
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
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5557 copies or substantial portions of the Software.
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5558 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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5559 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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Sam <sam@basx.dev>
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5560 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
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5561 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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5562 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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5563 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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5564 SOFTWARE.
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5565 ------------------------------------------------------------------------------
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5566 ALTERNATIVE B - Public Domain (www.unlicense.org)
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5567 This is free and unencumbered software released into the public domain.
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5568 Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
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5569 software, either in source code form or as a compiled binary, for any purpose,
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5570 commercial or non-commercial, and by any means.
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5571 In jurisdictions that recognize copyright laws, the author or authors of this
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
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5572 software dedicate any and all copyright interest in the software to the public
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5573 domain. We make this dedication for the benefit of the public at large and to
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5574 the detriment of our heirs and successors. We intend this dedication to be an
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5575 overt act of relinquishment in perpetuity of all present and future rights to
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5576 this software under copyright law.
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5577 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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5578 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
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5579 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
44ec744fbedc did: package restructuring according to nimble recommendation for libraries
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5580 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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5581 ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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5582 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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5583 ------------------------------------------------------------------------------
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5584 */