Exemplos de ModBufferSize em C++ (Cpp)

Exemplo n.º 1

Arquivo: DSoundStream.cpp Projeto: chinhodado/ppsspp

// TODO: Move the init into the thread, like WASAPI?
int DSoundAudioBackend::RunThread() {
	setCurrentThreadName("DSound");
	currentPos_ = 0;
	lastPos_ = 0;

	dsBuffer_->Play(0,0,DSBPLAY_LOOPING);

	while (!threadData_) {
		EnterCriticalSection(&soundCriticalSection);

		dsBuffer_->GetCurrentPosition((DWORD *)&currentPos_, 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);
	}

Exemplo n.º 2

Arquivo: DSoundStream.cpp Projeto: 18859966862/ppsspp

	unsigned int WINAPI soundThread(void *)
	{
		setCurrentThreadName("DSoundThread");
		currentPos = 0;
		lastPos = 0;
		//writeDataToBuffer(0,realtimeBuffer,bufferSize);
		//  dsBuffer->Lock(0, bufferSize, (void **)&p1, &num1, (void **)&p2, &num2, 0); 

		dsBuffer->Play(0,0,DSBPLAY_LOOPING);

		while (!threadData)
		{
			EnterCriticalSection(&soundCriticalSection);

			dsBuffer->GetCurrentPosition((DWORD *)&currentPos, 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);
		}

Exemplo n.º 3

Arquivo: DSoundStream.cpp Projeto: njh08d/ppsspp

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 *)&currentPos_, 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);
	}

Exemplo n.º 4

Arquivo: DSoundStream.cpp Projeto: NullNoname/dolphin

// The audio thread.
void DSound::SoundLoop()
{
	currentPos = 0;
	lastPos = 0;
	dsBuffer->Play(0, 0, DSBPLAY_LOOPING);

	while (!threadData)
	{
		// No blocking inside the csection
		dsBuffer->GetCurrentPosition((DWORD*)&currentPos, 0);
		int numBytesToRender = FIX128(ModBufferSize(currentPos - lastPos));
		if (numBytesToRender >= 256)
		{
			if (numBytesToRender > sizeof(realtimeBuffer))
				PanicAlert("soundThread: too big render call");
			m_mixer->Mix(realtimeBuffer, numBytesToRender / 4);
			WriteDataToBuffer(lastPos, (char*)realtimeBuffer, numBytesToRender);
			lastPos = ModBufferSize(lastPos + numBytesToRender);
		}
		soundSyncEvent.Wait();
	}
}

Exemplo n.º 5

Arquivo: DSoundStream.cpp Projeto: Bulkman/ppsspp

	unsigned int WINAPI soundThread(void *)
	{
		setCurrentThreadName("DSoundThread");
		currentPos = 0;
		lastPos = 0;
		//writeDataToBuffer(0,realtimeBuffer,bufferSize);
		//  dsBuffer->Lock(0, bufferSize, (void **)&p1, &num1, (void **)&p2, &num2, 0); 

		dsBuffer->Play(0,0,DSBPLAY_LOOPING);

		while (!threadData)
		{
			EnterCriticalSection(&soundCriticalSection);

			dsBuffer->GetCurrentPosition((DWORD *)&currentPos, 0);
			int numBytesToRender = RoundDown128(ModBufferSize(currentPos - lastPos)); 

			//renderStuff(numBytesToRender/2);
			//if (numBytesToRender>bufferSize/2) numBytesToRender=0;

			if (numBytesToRender >= 256)
			{
				int numBytesRendered = 4 * (*callback)(realtimeBuffer, numBytesToRender >> 2, 16, 44100, 2);

				if (numBytesRendered != 0)
					writeDataToBuffer(lastPos, (char *)realtimeBuffer, numBytesRendered);

				currentPos = ModBufferSize(lastPos + numBytesRendered);
				totalRenderedBytes += numBytesRendered;

				lastPos = currentPos;
			}


			LeaveCriticalSection(&soundCriticalSection);
			WaitForSingleObject(soundSyncEvent, MAXWAIT);
		}