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winealsa: Zero buffer, only write data if needed.

This commit is contained in:
Maarten Lankhorst 2011-04-26 13:22:45 +02:00 committed by Alexandre Julliard
parent e140077cc7
commit c385a93505
1 changed files with 5 additions and 1 deletions
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6
dlls/winealsa.drv/mmdevdrv.c
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@ -479,6 +479,10 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
hr = E_OUTOFMEMORY;
goto exit;
}
if (fmt->wBitsPerSample == 8)
memset(This->local_buffer, 128, This->bufsize_frames * fmt->nBlockAlign);
else
memset(This->local_buffer, 0, This->bufsize_frames * fmt->nBlockAlign);
if((err = snd_pcm_sw_params_get_boundary(sw_params, &boundary)) < 0){
WARN("Unable to get boundary: %d (%s)\n", err, snd_strerror(err));
@ -1110,7 +1114,7 @@ static void CALLBACK alsa_push_buffer_data(void *user, BOOLEAN timer)
EnterCriticalSection(&This->lock);
if(This->dataflow == eRender)
if(This->dataflow == eRender && This->held_frames)
alsa_write_data(This);
else if(This->dataflow == eCapture)
alsa_read_data(This);