void FAudioStreamingManager::RemoveStreamingSoundSource(FSoundSource* SoundSource)
{
const FWaveInstance* WaveInstance = SoundSource->GetWaveInstance();
if (WaveInstance && WaveInstance->WaveData && WaveInstance->WaveData->IsStreaming())
{
// Make sure there is a request so that unused chunks
// can be cleared if this was the last playing instance
GetWaveRequest(WaveInstance->WaveData);
StreamingSoundSources.Remove(SoundSource);
}
}
void FAudioStreamingManager::UpdateResourceStreaming(float DeltaTime, bool bProcessEverything /*= false*/)
{
for (auto& WavePair : StreamingSoundWaves)
{
WavePair.Value.UpdateStreamingStatus();
}
for (auto Source : StreamingSoundSources)
{
const FWaveInstance* WaveInstance = Source->GetWaveInstance();
USoundWave* Wave = WaveInstance ? WaveInstance->WaveData : nullptr;
if (Wave)
{
FStreamingWaveData* WaveData = StreamingSoundWaves.Find(Wave);
if (WaveData && WaveData->PendingChunkChangeRequestStatus.GetValue() == AudioState_ReadyFor_Requests)
{
// Request the chunk the source is using and the one after that
FWaveRequest& WaveRequest = GetWaveRequest(Wave);
int32 SourceChunk = Source->GetBuffer()->GetCurrentChunkIndex();
if (SourceChunk >= 0 && SourceChunk < Wave->RunningPlatformData->NumChunks)
{
WaveRequest.RequiredIndices.AddUnique(SourceChunk);
WaveRequest.RequiredIndices.AddUnique((SourceChunk+1)%Wave->RunningPlatformData->NumChunks);
if (!WaveData->LoadedChunkIndices.Contains(SourceChunk)
|| Source->GetBuffer()->GetCurrentChunkOffset() > Wave->RunningPlatformData->Chunks[SourceChunk].DataSize / 2)
{
// currently not loaded or already read over half, request is high priority
WaveRequest.bPrioritiseRequest = true;
}
}
}
}
}
for (auto WaveRequest : WaveRequests)
{
USoundWave* Wave = WaveRequest.Key;
FStreamingWaveData* WaveData = StreamingSoundWaves.Find(Wave);
if (WaveData && WaveData->PendingChunkChangeRequestStatus.GetValue() == AudioState_ReadyFor_Requests)
{
WaveData->UpdateChunkRequests(WaveRequest.Value);
WaveData->UpdateStreamingStatus();
WaveRequests.Remove(Wave);
}
}
}
