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dsound: Use a 2 stage mixing/normalization for sound.

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This commit is contained in:
Maarten Lankhorst 2007-11-07 20:32:22 +01:00 committed by Alexandre Julliard
parent a938f69360
commit 4d1129f785
4 changed files with 69 additions and 75 deletions
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5
dlls/dsound/dsound.c
View file

@ -1275,8 +1275,9 @@ ULONG DirectSoundDevice_Release(DirectSoundDevice * device)
DSOUND_renderer[device->drvdesc.dnDevNode] = NULL;
HeapFree(GetProcessHeap(),0,device->tmp_buffer);
HeapFree(GetProcessHeap(),0,device->buffer);
HeapFree(GetProcessHeap(), 0, device->tmp_buffer);
HeapFree(GetProcessHeap(), 0, device->mix_buffer);
HeapFree(GetProcessHeap(), 0, device->buffer);
RtlDeleteResource(&device->buffer_list_lock);
device->mixlock.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&device->mixlock);

9
dlls/dsound/dsound_private.h
View file

@ -104,8 +104,11 @@ struct DirectSoundDevice
PrimaryBufferImpl* primary;
DSBUFFERDESC dsbd;
DWORD speaker_config;
LPBYTE tmp_buffer;
DWORD tmp_buffer_len;
LPBYTE tmp_buffer, mix_buffer;
DWORD tmp_buffer_len, mix_buffer_len;
mixfunc mixfunction;
normfunc normfunction;
/* DirectSound3DListener fields */
IDirectSound3DListenerImpl* listener;
@ -441,7 +444,7 @@ HRESULT DSOUND_ReopenDevice(DirectSoundDevice *device, BOOL forcewave);
HRESULT DSOUND_FullDuplexCreate(REFIID riid, LPDIRECTSOUNDFULLDUPLEX* ppDSFD);
/* mixer.c */
DWORD DSOUND_bufpos_to_mixpos(const DirectSoundDevice* device, DWORD pos);
void DSOUND_CheckEvent(const IDirectSoundBufferImpl *dsb, DWORD playpos, int len);
void DSOUND_RecalcVolPan(PDSVOLUMEPAN volpan);
void DSOUND_AmpFactorToVolPan(PDSVOLUMEPAN volpan);

109
dlls/dsound/mixer.c
View file

@ -90,6 +90,19 @@ void DSOUND_AmpFactorToVolPan(PDSVOLUMEPAN volpan)
TRACE("Vol=%d Pan=%d\n", volpan->lVolume, volpan->lPan);
}
/** Convert a primary buffer position to a pointer position for device->mix_buffer
* device: DirectSoundDevice for which to calculate
* pos: Primary buffer position to converts
* Returns: Offset for mix_buffer
*/
DWORD DSOUND_bufpos_to_mixpos(const DirectSoundDevice* device, DWORD pos)
{
DWORD ret = pos * 32 / device->pwfx->wBitsPerSample;
if (device->pwfx->wBitsPerSample == 32)
ret *= 2;
return ret;
}
/* NOTE: Not all secpos have to always be mapped to a bufpos, other way around is always the case
* DWORD64 is used here because a single DWORD wouldn't be big enough to fit the freqAcc for big buffers
*/
@ -466,9 +479,9 @@ static LPBYTE DSOUND_MixerVol(const IDirectSoundBufferImpl *dsb, DWORD writepos,
*/
static DWORD DSOUND_MixInBuffer(IDirectSoundBufferImpl *dsb, DWORD writepos, DWORD fraglen)
{
INT i, len = fraglen, field, todo, ilen;
INT len = fraglen, ilen;
BYTE *ibuf = (dsb->tmp_buffer ? dsb->tmp_buffer : dsb->buffer->memory) + dsb->buf_mixpos, *volbuf;
DWORD oldpos;
DWORD oldpos, mixbufpos;
TRACE("buf_mixpos=%d/%d sec_mixpos=%d/%d\n", dsb->buf_mixpos, dsb->tmp_buffer_len, dsb->sec_mixpos, dsb->buflen);
TRACE("(%p,%d,%d)\n",dsb,writepos,fraglen);
@ -486,82 +499,26 @@ static DWORD DSOUND_MixInBuffer(IDirectSoundBufferImpl *dsb, DWORD writepos, DWO
if (volbuf)
ibuf = volbuf;
mixbufpos = DSOUND_bufpos_to_mixpos(dsb->device, writepos);
/* Now mix the temporary buffer into the devices main buffer */
if (dsb->device->pwfx->wBitsPerSample == 8) {
BYTE *obuf = dsb->device->buffer + writepos;
if ((writepos + len) <= dsb->device->buflen)
todo = len;
else
todo = dsb->device->buflen - writepos;
for (i = 0; i < todo; i++) {
/* 8-bit WAV is unsigned */
field = (*ibuf++ - 128);
field += (*obuf - 128);
if (field > 127) field = 127;
else if (field < -128) field = -128;
*obuf++ = field + 128;
}
if (todo < len) {
todo = len - todo;
obuf = dsb->device->buffer;
for (i = 0; i < todo; i++) {
/* 8-bit WAV is unsigned */
field = (*ibuf++ - 128);
field += (*obuf - 128);
if (field > 127) field = 127;
else if (field < -128) field = -128;
*obuf++ = field + 128;
}
}
} else {
INT16 *ibufs, *obufs;
ibufs = (INT16 *) ibuf;
obufs = (INT16 *)(dsb->device->buffer + writepos);
if ((writepos + len) <= dsb->device->buflen)
todo = len / 2;
else
todo = (dsb->device->buflen - writepos) / 2;
for (i = 0; i < todo; i++) {
/* 16-bit WAV is signed */
field = *ibufs++;
field += *obufs;
if (field > 32767) field = 32767;
else if (field < -32768) field = -32768;
*obufs++ = field;
}
if (todo < (len / 2)) {
todo = (len / 2) - todo;
obufs = (INT16 *)dsb->device->buffer;
for (i = 0; i < todo; i++) {
/* 16-bit WAV is signed */
field = *ibufs++;
field += *obufs;
if (field > 32767) field = 32767;
else if (field < -32768) field = -32768;
*obufs++ = field;
}
}
if ((writepos + len) <= dsb->device->buflen)
dsb->device->mixfunction(ibuf, dsb->device->mix_buffer + mixbufpos, len);
else
{
DWORD todo = dsb->device->buflen - writepos;
dsb->device->mixfunction(ibuf, dsb->device->mix_buffer + mixbufpos, todo);
dsb->device->mixfunction(ibuf + todo, dsb->device->mix_buffer, len - todo);
}
oldpos = dsb->sec_mixpos;
dsb->buf_mixpos += len;
if (dsb->buf_mixpos >= dsb->tmp_buffer_len) {
if (dsb->buf_mixpos > dsb->tmp_buffer_len)
ERR("Mixpos (%u) past buflen (%u), capping...\n", dsb->buf_mixpos, dsb->tmp_buffer_len);
if (dsb->playflags & DSBPLAY_LOOPING) {
dsb->buf_mixpos -= dsb->tmp_buffer_len;
} else if (dsb->buf_mixpos >= dsb->tmp_buffer_len) {
if (dsb->buf_mixpos > dsb->tmp_buffer_len)
ERR("Mixpos (%u) past buflen (%u), capping...\n", dsb->buf_mixpos, dsb->tmp_buffer_len);
dsb->buf_mixpos = dsb->sec_mixpos = 0;
dsb->state = STATE_STOPPED;
}
@ -817,7 +774,7 @@ static void DSOUND_PerformMix(DirectSoundDevice *device)
if (device->priolevel != DSSCL_WRITEPRIMARY) {
BOOL recover = FALSE, all_stopped = FALSE;
DWORD playpos, writepos, writelead, maxq, frag, prebuff_max, prebuff_left, size1, size2;
DWORD playpos, writepos, writelead, maxq, frag, prebuff_max, prebuff_left, size1, size2, mixplaypos, mixplaypos2;
LPVOID buf1, buf2;
BOOL lock = (device->hwbuf && !(device->drvdesc.dwFlags & DSDDESC_DONTNEEDPRIMARYLOCK));
BOOL mustlock = FALSE;
@ -836,12 +793,16 @@ static void DSOUND_PerformMix(DirectSoundDevice *device)
playpos,writepos,device->playpos,device->mixpos,device->buflen);
assert(device->playpos < device->buflen);
mixplaypos = DSOUND_bufpos_to_mixpos(device, device->playpos);
mixplaypos2 = DSOUND_bufpos_to_mixpos(device, playpos);
/* wipe out just-played sound data */
if (playpos < device->playpos) {
buf1 = device->buffer + device->playpos;
buf2 = device->buffer;
size1 = device->buflen - device->playpos;
size2 = playpos;
FillMemory(device->mix_buffer + mixplaypos, device->mix_buffer_len - mixplaypos, 0);
FillMemory(device->mix_buffer, mixplaypos2, 0);
if (lock)
IDsDriverBuffer_Lock(device->hwbuf, &buf1, &size1, &buf2, &size2, device->playpos, size1+size2, 0);
FillMemory(buf1, size1, nfiller);
@ -855,6 +816,7 @@ static void DSOUND_PerformMix(DirectSoundDevice *device)
buf2 = NULL;
size1 = playpos - device->playpos;
size2 = 0;
FillMemory(device->mix_buffer + mixplaypos, mixplaypos2 - mixplaypos, 0);
if (lock)
IDsDriverBuffer_Lock(device->hwbuf, &buf1, &size1, &buf2, &size2, device->playpos, size1+size2, 0);
FillMemory(buf1, size1, nfiller);
@ -906,6 +868,15 @@ static void DSOUND_PerformMix(DirectSoundDevice *device)
/* do the mixing */
frag = DSOUND_MixToPrimary(device, writepos, maxq, mustlock, recover, &all_stopped);
if (frag + writepos > device->buflen)
{
DWORD todo = device->buflen - writepos;
device->normfunction(device->mix_buffer + DSOUND_bufpos_to_mixpos(device, writepos), device->buffer + writepos, todo);
device->normfunction(device->mix_buffer, device->buffer, frag - todo);
}
else
device->normfunction(device->mix_buffer + DSOUND_bufpos_to_mixpos(device, writepos), device->buffer + writepos, frag);
/* update the mix position, taking wrap-around into acount */
device->mixpos = writepos + frag;
device->mixpos %= device->buflen;

21
dlls/dsound/primary.c
View file

@ -188,6 +188,16 @@ static HRESULT DSOUND_PrimaryOpen(DirectSoundDevice *device)
device->prebuf = device->helfrags;
}
device->mix_buffer_len = DSOUND_bufpos_to_mixpos(device, device->buflen);
device->mix_buffer = HeapAlloc(GetProcessHeap(), 0, device->mix_buffer_len);
if (!device->mix_buffer)
{
if (device->hwbuf)
IDsDriverBuffer_Release(device->hwbuf);
device->hwbuf = NULL;
return DSERR_OUTOFMEMORY;
}
if (device->state == STATE_PLAYING) device->state = STATE_STARTING;
else if (device->state == STATE_STOPPING) device->state = STATE_STOPPED;
@ -256,7 +266,10 @@ static HRESULT DSOUND_PrimaryOpen(DirectSoundDevice *device)
TRACE("fraglen=%d, overshot=%d\n", device->fraglen, overshot);
}
device->mixfunction = mixfunctions[device->pwfx->wBitsPerSample/8 - 1];
device->normfunction = normfunctions[device->pwfx->wBitsPerSample/8 - 1];
FillMemory(device->buffer, device->buflen, (device->pwfx->wBitsPerSample == 8) ? 128 : 0);
FillMemory(device->mix_buffer, device->mix_buffer_len, 0);
device->pwplay = device->pwqueue = device->playpos = device->mixpos = 0;
return err;
}
@ -443,7 +456,7 @@ HRESULT DSOUND_PrimarySetFormat(DirectSoundDevice *device, LPCWAVEFORMATEX wfex,
RtlAcquireResourceExclusive(&(device->buffer_list_lock), TRUE);
EnterCriticalSection(&(device->mixlock));
if (wfex->wFormatTag == WAVE_FORMAT_PCM) {
if (wfex->wFormatTag == WAVE_FORMAT_PCM) {
alloc_size = sizeof(WAVEFORMATEX);
cp_size = sizeof(PCMWAVEFORMAT);
} else
@ -520,6 +533,12 @@ HRESULT DSOUND_PrimarySetFormat(DirectSoundDevice *device, LPCWAVEFORMATEX wfex,
}
}
device->mix_buffer_len = DSOUND_bufpos_to_mixpos(device, device->buflen);
device->mix_buffer = HeapReAlloc(GetProcessHeap(), 0, device->mix_buffer, device->mix_buffer_len);
FillMemory(device->mix_buffer, device->mix_buffer_len, 0);
device->mixfunction = mixfunctions[device->pwfx->wBitsPerSample/8 - 1];
device->normfunction = normfunctions[device->pwfx->wBitsPerSample/8 - 1];
if (nSamplesPerSec != device->pwfx->nSamplesPerSec || bpp != device->pwfx->wBitsPerSample || chans != device->pwfx->nChannels) {
IDirectSoundBufferImpl** dsb = device->buffers;
for (i = 0; i < device->nrofbuffers; i++, dsb++) {