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winecoreaudio: Allocate/deallocate audio buffers in widOpen/widClose.

This commit is contained in:
Ken Thomases 2006-12-28 11:06:29 -06:00 committed by Alexandre Julliard
parent 4b904bbf13
commit 127523d7a2
1 changed files with 67 additions and 0 deletions
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67
dlls/winmm/winecoreaudio/audio.c
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@ -176,6 +176,7 @@ typedef struct {
PCMWAVEFORMAT format;
AudioUnit audioUnit;
AudioBufferList*bufferList;
/* Record state of debug channels at open. Used to control fprintf's since
* we can't use Wine debug channel calls in non-Wine AudioUnit threads. */
@ -1518,6 +1519,54 @@ static DWORD widGetDevCaps(WORD wDevID, LPWAVEINCAPSW lpCaps, DWORD dwSize)
}
/**************************************************************************
* widHelper_DestroyAudioBufferList [internal]
* Convenience function to dispose of our audio buffers
*/
static void widHelper_DestroyAudioBufferList(AudioBufferList* list)
{
if (list)
{
UInt32 i;
for (i = 0; i < list->mNumberBuffers; i++)
{
if (list->mBuffers[i].mData)
HeapFree(GetProcessHeap(), 0, list->mBuffers[i].mData);
}
HeapFree(GetProcessHeap(), 0, list);
}
}
/**************************************************************************
* widHelper_AllocateAudioBufferList [internal]
* Convenience function to allocate our audio buffers
*/
static AudioBufferList* widHelper_AllocateAudioBufferList(UInt32 numChannels, UInt32 size)
{
AudioBufferList* list;
UInt32 i;
list = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(AudioBufferList) + numChannels * sizeof(AudioBuffer));
if (list == NULL)
return NULL;
list->mNumberBuffers = numChannels;
for (i = 0; i < numChannels; ++i)
{
list->mBuffers[i].mNumberChannels = 1;
list->mBuffers[i].mDataByteSize = size;
list->mBuffers[i].mData = HeapAlloc(GetProcessHeap(), 0, size);
if (list->mBuffers[i].mData == NULL)
{
widHelper_DestroyAudioBufferList(list);
return NULL;
}
}
return list;
}
/**************************************************************************
* widOpen [internal]
*/
@ -1525,6 +1574,7 @@ static DWORD widOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
{
WINE_WAVEIN* wwi;
UInt32 frameCount;
UInt32 bytesPerFrame;
TRACE("(%u, %p, %08X);\n", wDevID, lpDesc, dwFlags);
if (lpDesc == NULL)
@ -1601,6 +1651,19 @@ static DWORD widOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
return MMSYSERR_ERROR;
}
/* Allocate our audio buffers */
/* For interleaved audio, we allocate one buffer for all channels. */
bytesPerFrame = wwi->format.wBitsPerSample * wwi->format.wf.nChannels / 8;
wwi->bufferList = widHelper_AllocateAudioBufferList(1, wwi->format.wf.nChannels * frameCount * bytesPerFrame);
if (wwi->bufferList == NULL)
{
ERR("Failed to allocate buffer list\n");
AudioUnitUninitialize(wwi->audioUnit);
AudioUnit_CloseAudioUnit(wwi->audioUnit);
OSSpinLockUnlock(&wwi->lock);
return MMSYSERR_NOMEM;
}
OSSpinLockUnlock(&wwi->lock);
return widNotifyClient(wwi, WIM_OPEN, 0L, 0L);
@ -1658,6 +1721,10 @@ static DWORD widClose(WORD wDevID)
ERR("Can't close AudioUnit\n");
}
/* Dellocate our audio buffers */
widHelper_DestroyAudioBufferList(wwi->bufferList);
wwi->bufferList = NULL;
ret = widNotifyClient(wwi, WIM_CLOSE, 0L, 0L);
}