void UPhyaCollisionHandler::ProceduralWaveUnderflow(USoundWaveProcedural* InProceduralWave, int32 SamplesRequired)
{
check(ProceduralWave == InProceduralWave);
const int32 QueuedSamples = ProceduralWave->GetAvailableAudioByteCount()/sizeof(uint16);
const int32 SamplesNeeded = SamplesRequired - QueuedSamples;
const int32 BlocksNeeded = FMath::CeilToInt(SamplesNeeded/BlockSize);
UE_LOG(LogTemp, Log, TEXT("Creating %d blocks for %s"), BlocksNeeded, *GetWorld()->GetPathName());
TArray<int16> SampleData;
SampleData.AddUninitialized(BlocksNeeded * BlockSize);
int32 CurrSample = 0;
for(int32 BlockIdx=0; BlockIdx<BlocksNeeded; BlockIdx++)
{
paBlock* AudioBlock = paTick();
float* AudioData = AudioBlock->getStart();
for(int32 SampleIdx=0; SampleIdx<BlockSize; SampleIdx++)
{
SampleData[CurrSample] = (int16)AudioData[SampleIdx];
CurrSample++;
//UE_LOG(LogTemp, Log, TEXT("%d:%f"), CurrSample, SampleData[CurrSample]);
}
}
ProceduralWave->QueueAudio((uint8*)SampleData.GetData(), SampleData.Num() * sizeof(int16));
}
PHYA_API
int
paAdaptiveAutoGenerate()
{
if ( paScene::outputStream->calcnDeviceBufferSamplesToFillAdaptively() == -1 ) return -1; // Device buffer not ready for writing.
// Calculate audioblocks until there are enough to fill the device buffer
// upto the amount worked out internally in the AIO library.
while( paScene::outputStream->writeSamplesWithoutBlocking(paTick()->getStart(), paBlock::nFrames) != -1 );
return 0;
}
PHYA_API
paFloat*
paGenerate()
{
paBlock* output = paTick();
if (paScene::outputStreamIsOpen)
{
if (_limiter) _limiter->tick(output);
paScene::outputStream->writeSamples(output->getStart(), paBlock::nFrames);
}
// Allow the user to pass audio generated by paTick() to their own output stream.
if (_monoCallback) _monoCallback(output->getStart());
return output->getStart();
}
static
PHYA_THREAD_RETURN_TYPE
_audioThread(void*)
{
paBlock* output = new paBlock;
while(paScene::audioThreadIsOn)
{
paEnterCriticalSection(&_critSec); // Don't use paLock() because the locked flag is just for use by main thread.
output = paTick();
paLeaveCriticalSection(&_critSec);
if (_limiter) _limiter->tick(output);
// Allow the user to pass audio generated by paTick() to their own output stream.
if (_monoCallback) _monoCallback(output->getStart());
if (paScene::outputStreamIsOpen)
paScene::outputStream->writeSamples(output->getStart(), paBlock::nFrames);
}
// printf("thread stops\n");
return 0;
}
