/**
* Initializes a source with a given wave instance and prepares it for playback.
*
* @param WaveInstance wave instance being primed for playback
* @return true if initialization was successful, false otherwise
*/
bool FCoreAudioSoundSource::Init( FWaveInstance* InWaveInstance )
{
if (InWaveInstance->OutputTarget != EAudioOutputTarget::Controller)
{
// Find matching buffer.
Buffer = FCoreAudioSoundBuffer::Init( AudioDevice, InWaveInstance->WaveData, InWaveInstance->StartTime > 0.f );
// Buffer failed to be created, or there was an error with the compressed data
if( Buffer && Buffer->NumChannels > 0 )
{
SCOPE_CYCLE_COUNTER( STAT_AudioSourceInitTime );
WaveInstance = InWaveInstance;
// Set whether to apply reverb
SetReverbApplied( true );
if (WaveInstance->StartTime > 0.f)
{
Buffer->Seek(WaveInstance->StartTime);
}
// Submit audio buffers
switch( Buffer->SoundFormat )
{
case SoundFormat_PCM:
case SoundFormat_PCMPreview:
SubmitPCMBuffers();
break;
case SoundFormat_PCMRT:
SubmitPCMRTBuffers();
break;
}
// Initialization succeeded.
return( true );
}
}
// Initialization failed.
return false;
}
bool FMixerSource::Init(FWaveInstance* InWaveInstance)
{
AUDIO_MIXER_CHECK(MixerBuffer);
AUDIO_MIXER_CHECK(MixerBuffer->IsRealTimeSourceReady());
// Get the number of frames before creating the buffer
int32 NumFrames = INDEX_NONE;
if (InWaveInstance->WaveData->DecompressionType != EDecompressionType::DTYPE_Procedural)
{
const int32 NumBytes = InWaveInstance->WaveData->RawPCMDataSize;
NumFrames = NumBytes / (InWaveInstance->WaveData->NumChannels * sizeof(int16));
}
FSoundBuffer* SoundBuffer = static_cast<FSoundBuffer*>(MixerBuffer);
if (SoundBuffer->NumChannels > 0)
{
SCOPE_CYCLE_COUNTER(STAT_AudioSourceInitTime);
AUDIO_MIXER_CHECK(MixerDevice);
MixerSourceVoice = MixerDevice->GetMixerSourceVoice(InWaveInstance, this, UseHRTSpatialization());
if (!MixerSourceVoice)
{
return false;
}
// Default the submix to use to use the master submix
FMixerSubmix* SourceSubmix = MixerDevice->GetMasterSubmix();
// If we're told to use a different submix, then grab that submix and set it for the sound
if (InWaveInstance->SoundSubmix)
{
FMixerSubmix** Submix = MixerDevice->GetSubmix(InWaveInstance->SoundSubmix);
check(Submix);
SourceSubmix = *Submix;
}
// Initialize the source voice with the necessary format information
FMixerSourceVoiceInitParams InitParams;
InitParams.BufferQueueListener = this;
InitParams.NumInputChannels = InWaveInstance->WaveData->NumChannels;
InitParams.NumInputFrames = NumFrames;
InitParams.OwningSubmix = SourceSubmix;
InitParams.SourceVoice = MixerSourceVoice;
InitParams.bUseHRTFSpatialization = UseHRTSpatialization();
// Check to see if this sound has been flagged to be in debug mode
#if AUDIO_MIXER_ENABLE_DEBUG_MODE
InitParams.DebugName = InWaveInstance->GetName();
bool bIsDebug = false;
FString WaveInstanceName = WaveInstance->GetName();
FString TestName = GEngine->GetAudioDeviceManager()->GetAudioMixerDebugSoundName();
if (WaveInstanceName.Contains(TestName))
{
bDebugMode = true;
InitParams.bIsDebugMode = bDebugMode;
}
#endif
if (MixerSourceVoice->Init(InitParams))
{
AUDIO_MIXER_CHECK(WaveInstance);
if (WaveInstance->StartTime)
{
MixerBuffer->Seek(WaveInstance->StartTime);
}
const EBufferType::Type BufferType = MixerBuffer->GetType();
switch (BufferType)
{
case EBufferType::PCM:
case EBufferType::PCMPreview:
SubmitPCMBuffers();
break;
case EBufferType::PCMRealTime:
case EBufferType::Streaming:
SubmitPCMRTBuffers();
break;
case EBufferType::Invalid:
break;
}
bInitialized = true;
ChannelMap.Reset();
Update();
return true;
}
}
return false;
}