BOOL getCurrentChannelConfig()
{
IDirectSound8* ds;
DWORD speakerConfig;
LPGUID guid = NULL;
DirectSoundEnumerate((LPDSENUMCALLBACK)DSEnumProc, (VOID*)&guid);
if (DirectSoundCreate8(guid, &ds, NULL) != S_OK) {
return FALSE;
}
ds->Initialize(NULL);
if (ds->GetSpeakerConfig(&speakerConfig) != S_OK) {
PrintLastError("GetSpeakerConfig()");
return FALSE;
}
if (ds) {
ds->Release();
}
if (guid) {
LocalFree(guid);
}
switch (DSSPEAKER_CONFIG(speakerConfig)) {
case DSSPEAKER_STEREO: currentChannelCount = 2; return TRUE;
case DSSPEAKER_QUAD: currentChannelCount = 4; return TRUE;
case DSSPEAKER_5POINT1: currentChannelCount = 6; return TRUE;
case DSSPEAKER_7POINT1: currentChannelCount = 8; return TRUE;
}
return FALSE;
}
int DSoundAudioBackend::RunThread() {
if (FAILED(DirectSoundCreate8(0, &ds_, 0))) {
ds_ = NULL;
threadData_ = 2;
return 1;
}
ds_->SetCooperativeLevel(window_, DSSCL_PRIORITY);
if (!CreateBuffer()) {
ds_->Release();
ds_ = NULL;
threadData_ = 2;
return 1;
}
soundSyncEvent_ = CreateEvent(0, false, false, 0);
InitializeCriticalSection(&soundCriticalSection);
DWORD num1;
short *p1;
dsBuffer_->Lock(0, bufferSize_, (void **)&p1, &num1, 0, 0, 0);
memset(p1, 0, num1);
dsBuffer_->Unlock(p1, num1, 0, 0);
totalRenderedBytes_ = -bufferSize_;
setCurrentThreadName("DSound");
currentPos_ = 0;
lastPos_ = 0;
dsBuffer_->Play(0,0,DSBPLAY_LOOPING);
while (!threadData_) {
EnterCriticalSection(&soundCriticalSection);
dsBuffer_->GetCurrentPosition((DWORD *)¤tPos_, 0);
int numBytesToRender = RoundDown128(ModBufferSize(currentPos_ - lastPos_));
if (numBytesToRender >= 256) {
int numBytesRendered = 4 * (*callback_)(realtimeBuffer_, numBytesToRender >> 2, 16, 44100, 2);
//We need to copy the full buffer, regardless of what the mixer claims to have filled
//If we don't do this then the sound will loop if the sound stops and the mixer writes only zeroes
numBytesRendered = numBytesToRender;
WriteDataToBuffer(lastPos_, (char *) realtimeBuffer_, numBytesRendered);
currentPos_ = ModBufferSize(lastPos_ + numBytesRendered);
totalRenderedBytes_ += numBytesRendered;
lastPos_ = currentPos_;
}
LeaveCriticalSection(&soundCriticalSection);
WaitForSingleObject(soundSyncEvent_, MAXWAIT);
}
void VDAudioOutputDirectSoundW32::ShutdownDirectSound() {
ShutdownPlayback();
if (mpDS8) {
mpDS8->Release();
mpDS8 = NULL;
}
if (mhmodDS) {
FreeLibrary(mhmodDS);
mhmodDS = NULL;
}
}
BOOL setCurrentChannelConfig()
{
IDirectSound8* ds;
DWORD speakerConfig;
LPGUID guid = NULL;
DirectSoundEnumerate((LPDSENUMCALLBACK)DSEnumProc, (VOID*)&guid);
if (DirectSoundCreate8(guid, &ds, NULL) != S_OK) {
PrintLastError("DirectSoundCreate8()");
return FALSE;
}
ds->Initialize(NULL);
switch (currentChannelCount) {
case 2: speakerConfig = DSSPEAKER_STEREO; break;
case 4: speakerConfig = DSSPEAKER_QUAD; break;
case 6: speakerConfig = DSSPEAKER_5POINT1; break;
case 8: speakerConfig = DSSPEAKER_7POINT1; break;
default: speakerConfig = DSSPEAKER_STEREO; break;
}
if (ds->SetSpeakerConfig(speakerConfig) != S_OK) {
PrintLastError("SetSpeakerConfig()");
return FALSE;
}
if (ds) {
ds->Release();
}
if (guid) {
LocalFree(guid);
}
return FALSE;
}