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xaudio2: Implement IXAudio2SourceVoice::FlushSourceBuffers.

This commit is contained in:
Andrew Eikum 2015-08-28 08:22:25 -05:00 committed by Alexandre Julliard
parent cb38242821
commit 66a58ad52a
1 changed files with 37 additions and 0 deletions
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37
dlls/xaudio2_7/xaudio_dll.c
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@ -639,8 +639,45 @@ static HRESULT WINAPI XA2SRC_SubmitSourceBuffer(IXAudio2SourceVoice *iface,
static HRESULT WINAPI XA2SRC_FlushSourceBuffers(IXAudio2SourceVoice *iface)
{
UINT i, first, last, to_flush;
XA2SourceImpl *This = impl_from_IXAudio2SourceVoice(iface);
TRACE("%p\n", This);
EnterCriticalSection(&This->lock);
if(This->running && This->nbufs > 0){
/* when running, flush only completely unused buffers; the rest remain
* in queue */
last = (This->first_buf + This->nbufs) % XAUDIO2_MAX_QUEUED_BUFFERS;
first = (This->cur_buf + 1) % XAUDIO2_MAX_QUEUED_BUFFERS;
if(This->cur_buf == last)
/* nothing to do */
to_flush = 0;
else if(last >= first)
to_flush = last - first;
else
to_flush = last + XAUDIO2_MAX_QUEUED_BUFFERS - first;
}else{
/* when stopped, flush all buffers */
first = This->first_buf;
last = (This->first_buf + This->nbufs) % XAUDIO2_MAX_QUEUED_BUFFERS;
to_flush = This->nbufs;
}
for(i = first;
i < (first + to_flush) % XAUDIO2_MAX_QUEUED_BUFFERS;
i = (i + 1) % XAUDIO2_MAX_QUEUED_BUFFERS){
if(This->cb)
IXAudio2VoiceCallback_OnBufferEnd(This->cb,
This->buffers[i].xa2buffer.pContext);
}
This->nbufs -= to_flush;
LeaveCriticalSection(&This->lock);
return S_OK;
}