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dsound: Don't use IAudioClock::GetPosition to determine buffer fullness.

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This commit is contained in:
Andrew Eikum 2012-05-15 14:41:24 -05:00 committed by Alexandre Julliard
parent d2ddd20054
commit 1cc9ecb558
3 changed files with 17 additions and 19 deletions
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1
dlls/dsound/dsound_private.h
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@ -83,7 +83,6 @@ struct DirectSoundDevice
DWORD priolevel;
PWAVEFORMATEX pwfx;
UINT timerID, playing_offs_bytes, in_mmdev_bytes, prebuf, helfrags;
UINT64 last_pos_bytes;
DWORD fraglen;
LPBYTE buffer;
DWORD writelead, buflen, state, playpos, mixpos;

33
dlls/dsound/mixer.c
View file

@ -667,8 +667,7 @@ static void DSOUND_WaveQueue(DirectSoundDevice *device, BOOL force)
*/
static void DSOUND_PerformMix(DirectSoundDevice *device)
{
UINT64 clock_pos, clock_freq, pos_bytes;
UINT delta_frags;
UINT32 pad, to_mix_frags, to_mix_bytes;
HRESULT hr;
TRACE("(%p)\n", device);
@ -676,28 +675,28 @@ static void DSOUND_PerformMix(DirectSoundDevice *device)
/* **** */
EnterCriticalSection(&device->mixlock);
hr = IAudioClock_GetFrequency(device->clock, &clock_freq);
if(FAILED(hr)){
WARN("GetFrequency failed: %08x\n", hr);
LeaveCriticalSection(&device->mixlock);
return;
}
hr = IAudioClock_GetPosition(device->clock, &clock_pos, NULL);
hr = IAudioClient_GetCurrentPadding(device->client, &pad);
if(FAILED(hr)){
WARN("GetCurrentPadding failed: %08x\n", hr);
LeaveCriticalSection(&device->mixlock);
LeaveCriticalSection(&device->mixlock);
return;
}
pos_bytes = (clock_pos * device->pwfx->nSamplesPerSec * device->pwfx->nBlockAlign) / clock_freq;
to_mix_frags = device->prebuf - (pad * device->pwfx->nBlockAlign + device->fraglen - 1) / device->fraglen;
delta_frags = (pos_bytes - device->last_pos_bytes) / device->fraglen;
if(delta_frags > 0){
device->playing_offs_bytes += delta_frags * device->fraglen;
if(to_mix_frags == 0){
/* nothing to do! */
LeaveCriticalSection(&device->mixlock);
return;
}
to_mix_bytes = to_mix_frags * device->fraglen;
if(device->in_mmdev_bytes > 0){
DWORD delta_bytes = min(to_mix_bytes, device->in_mmdev_bytes);
device->in_mmdev_bytes -= delta_bytes;
device->playing_offs_bytes += delta_bytes;
device->playing_offs_bytes %= device->buflen;
device->in_mmdev_bytes -= delta_frags * device->fraglen;
device->last_pos_bytes = pos_bytes - (pos_bytes % device->fraglen);
}
if (device->priolevel != DSSCL_WRITEPRIMARY) {

2
dlls/dsound/primary.c
View file

@ -196,7 +196,7 @@ static HRESULT DSOUND_PrimaryOpen(DirectSoundDevice *device)
FillMemory(device->buffer, device->buflen, (device->pwfx->wBitsPerSample == 8) ? 128 : 0);
FillMemory(device->mix_buffer, device->mix_buffer_len, 0);
device->last_pos_bytes = device->playing_offs_bytes = device->in_mmdev_bytes = device->playpos = device->mixpos = 0;
device->playing_offs_bytes = device->in_mmdev_bytes = device->playpos = device->mixpos = 0;
return DS_OK;
}