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annotate semiconginev2/platform/windows/audio.nim @ 1218:56781cc0fc7c compiletime-tests

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did: renamge main package
author sam <sam@basx.dev>
date Wed, 17 Jul 2024 21:01:37 +0700
parents semicongine/platform/windows/audio.nim@239adab121a3
children a3fa15c25026
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1191
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1 template CheckWinMMResult*(call: untyped) =
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2 let value = call
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3 if value < 0:
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4 raise newException(Exception, "Windows multimedia error: " & astToStr(call) &
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5 " returned " & $value)
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6 type
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7 NativeSoundDevice* = object
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8 handle: HWAVEOUT
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9 buffers: seq[WAVEHDR]
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10
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11 proc OpenSoundDevice*(sampleRate: uint32, buffers: seq[ptr SoundData]): NativeSoundDevice =
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12 var format = WAVEFORMATEX(
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13 wFormatTag: WAVE_FORMAT_PCM,
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14 nChannels: 2,
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15 nSamplesPerSec: DWORD(sampleRate),
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16 nAvgBytesPerSec: DWORD(sampleRate) * 4,
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17 nBlockAlign: 4,
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18 wBitsPerSample: 16,
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19 cbSize: 0,
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20 )
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21 CheckWinMMResult waveOutOpen(addr result.handle, WAVE_MAPPER, addr format, DWORD_PTR(0), DWORD_PTR(0), CALLBACK_NULL)
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22
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23 for i in 0 ..< buffers.len:
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24 result.buffers.add WAVEHDR(
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25 lpData: cast[cstring](addr buffers[i][][0]),
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26 dwBufferLength: DWORD(buffers[i][].len * sizeof(Sample)),
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27 dwLoops: 1,
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28 )
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29 for i in 0 ..< result.buffers.len:
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30 CheckWinMMResult waveOutPrepareHeader(result.handle, addr result.buffers[i], UINT(sizeof(WAVEHDR)))
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31 CheckWinMMResult waveOutWrite(result.handle, addr result.buffers[i], UINT(sizeof(WAVEHDR)))
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32
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33 proc WriteSoundData*(soundDevice: var NativeSoundDevice, buffer: int) =
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34 while (soundDevice.buffers[buffer].dwFlags and WHDR_DONE) == 0:
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35 sleep(1)
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36 CheckWinMMResult waveOutWrite(soundDevice.handle, addr soundDevice.buffers[buffer], UINT(sizeof(WAVEHDR)))
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37
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38 proc CloseSoundDevice*(soundDevice: var NativeSoundDevice) =
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39 for i in 0 ..< soundDevice.buffers.len:
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40 discard waveOutUnprepareHeader(soundDevice.handle, addr soundDevice.buffers[i], UINT(sizeof(WAVEHDR)))
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41 waveOutClose(soundDevice.handle)