float FVolumeManager::GetVolumeAttenuation(uint32 VoiceDataIndex) const
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Baseline[VoiceDataIndex] > 0.0f);
return Attenuation[VoiceDataIndex];
}
float FVolumeManager::GetVolumeFade(uint32 VoiceDataIndex) const
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Baseline[VoiceDataIndex] > 0.0f);
return FadeScale.CurrentValue[VoiceDataIndex];
}
float FVolumeManager::GetVolumeProduct(uint32 VoiceDataIndex) const
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Baseline[VoiceDataIndex] > 0.0f);
return VolumeProduct[VoiceDataIndex];
}
void FVolumeManager::SetDynamicVolumeScale(uint32 VoiceDataIndex, float InVolume, float DeltaTimeSec)
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Baseline[VoiceDataIndex] > 0.0f);
DEBUG_AUDIO_CHECK(InVolume >= 0.0f && InVolume <= 1.0f);
DynamicScale.SetValue(VoiceDataIndex, InVolume, LastTimeSec, DeltaTimeSec);
}
void FVolumeManager::Update()
{
double CurrentTimeSec = AudioModule->GetCurrentTimeSec();
LastTimeSec = CurrentTimeSec;
// If there are no volumes to update, then no need to update anything
if (EntryCount == 0)
{
return;
}
int32 UpdateCount = 0;
float DeltaTime = 0.0f;
float Fraction = 0.0f;
float Result = 0.0f;
int32 TotalCount = Baseline.Num();
// Update all dynamic volume parameters in one parallelized loop.
// TODO: implement SSE
for (int32 Index = 0; Index < TotalCount && UpdateCount < EntryCount; ++Index)
{
// If the value of baseline is less than 0.0f, it's been a released volume entry
if (Baseline[Index] < 0.0f)
{
continue;
}
++UpdateCount;
float Product = Baseline[Index] *
Attenuation[Index] *
DynamicScale.Compute(Index, CurrentTimeSec) *
FadeScale.Compute(Index, CurrentTimeSec);
DEBUG_AUDIO_CHECK(Product >= 0.0f && Product <= 1.0f);
VolumeProduct[Index] = Product;
}
// Reset the volume priority sorter
SortedVoices.Reset();
UpdateCount = 0;
VoiceComparePredicate Predicate;
for (int32 Index = 0; Index < TotalCount && UpdateCount < EntryCount; ++Index)
{
if (Baseline[Index] < 0.0f)
{
continue;
}
++UpdateCount;
float Temp = VolumeProduct[Index] * PriorityWeight[Index];
VolumeWeightedPriority[Index] = Temp;
SortedVoices.HeapPush(FSortedVoiceEntry(Index, Temp), Predicate);
}
// Make sure we updated everything
DEBUG_AUDIO_CHECK(UpdateCount == EntryCount);
}
void FVolumeManager::ReleaseEntry(uint32 VoiceDataIndex)
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
--EntryCount;
DEBUG_AUDIO_CHECK(EntryCount >= 0);
// Setting baseline to -1.0f is releasing the volume data at that index
Baseline[VoiceDataIndex] = -1.0f;
}
void FVolumeManager::InitializeEntry(uint32 VoiceDataIndex, const FVolumeInitParam& Params)
{
++EntryCount;
DEBUG_AUDIO_CHECK(EntryCount< Baseline.Num());
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Params.VolumeProduct >= 0.0f && Params.VolumeProduct <= 1.0f);
Baseline[VoiceDataIndex] = Params.BaseVolume;
Attenuation[VoiceDataIndex] = Params.VolumeAttenuation;
VolumeProduct[VoiceDataIndex] = Params.VolumeProduct;
EmitterHandle[VoiceDataIndex] = Params.EmitterHandle;
PriorityWeight[VoiceDataIndex] = Params.PriorityWeight;
DynamicScale.InitEntry(VoiceDataIndex);
DynamicScale.SetValue(VoiceDataIndex, Params.VolumeScale, LastTimeSec, Params.VolumeScaleDeltaTime);
FadeScale.InitEntry(VoiceDataIndex);
}
void FDynamicParamData::InitEntry(uint32 Index)
{
DEBUG_AUDIO_CHECK(Index < (uint32)StartValue.Num());
StartValue[Index] = 1.0f;
EndValue[Index] = 1.0f;
CurrentValue[Index] = 1.0f;
StartTime[Index] = 0.0f;
DeltaTime[Index] = 0.0f;
bIsDone[Index] = true;
}
void FVoice::NotifyPlayVirtual(uint32 InVoiceDataIndex)
{
DEBUG_AUDIO_CHECK(InVoiceDataIndex != INDEX_NONE);
VoiceDataIndex = InVoiceDataIndex;
PlayingState = EVoicePlayingState::PLAYING_VIRTUAL;
for (int32 i = 0; i < VoiceListeners.Num(); ++i)
{
VoiceListeners[i]->OnVoiceVirtual(this);
}
}
EVoiceError::Type FVoice::GetVolumeProduct(float& OutVolumeProduct) const
{
AUDIO_VOICE_CHECK_ERROR();
if (IsPlaying())
{
DEBUG_AUDIO_CHECK(VoiceDataIndex != INDEX_NONE);
FVoiceManager& VoiceManager = AudioModule->GetVoiceManager();
return VoiceManager.GetVolumeProduct(VoiceDataIndex, OutVolumeProduct);
}
OutVolumeProduct = 1.0f;
return EVoiceError::VOICE_NOT_PLAYING;
}
EVoiceError::Type FVoice::SetPitchScale(float InPitchScale, float InDeltaTimeSec /* = 0.0f */)
{
AUDIO_VOICE_CHECK_ERROR();
AUDIO_VOICE_CHECK_SUSPEND();
if (PlayInfo.PitchScale != InPitchScale || PlayInfo.PitchScaletime != InDeltaTimeSec)
{
PlayInfo.PitchScale = InPitchScale;
PlayInfo.PitchScaletime = InDeltaTimeSec;
if (IsPlaying())
{
DEBUG_AUDIO_CHECK(VoiceDataIndex != INDEX_NONE);
FVoiceManager& VoiceManager = AudioModule->GetVoiceManager();
return SetError(VoiceManager.SetPitchScale(VoiceDataIndex, InPitchScale, InDeltaTimeSec));
}
}
return EVoiceError::NONE;
}
void DoWork()
{
// Synchronously load the input sound file
TSharedPtr<ISoundFile> InputSoundFile = AudioModule->LoadSoundFile(*SoundFilePath, false);
if (!InputSoundFile.IsValid())
{
return;
}
TSharedPtr<FSoundFileReader> InputSoundFileReader = AudioModule->CreateSoundFileReader();
ESoundFileError::Type Error = InputSoundFileReader->Init(InputSoundFile, false);
if (Error != ESoundFileError::NONE)
{
return;
}
check(Error == ESoundFileError::NONE);
// Cast to an internal object to get access to non-public API
FSoundFile* InputSoundFileInternal = static_cast<FSoundFile*>(InputSoundFile.Get());
FSoundFileDescription InputDescription;
Error = InputSoundFileInternal->GetDescription(InputDescription);
check(Error == ESoundFileError::NONE);
TArray<ESoundFileChannelMap::Type> ChannelMap;
Error = InputSoundFileInternal->GetChannelMap(ChannelMap);
FSoundFileDescription NewSoundFileDescription;
NewSoundFileDescription.NumChannels = InputDescription.NumChannels;
NewSoundFileDescription.NumFrames = InputDescription.NumFrames;
NewSoundFileDescription.FormatFlags = ConvertFormat.Format;
NewSoundFileDescription.SampleRate = ConvertFormat.SampleRate;
NewSoundFileDescription.NumSections = InputDescription.NumSections;
NewSoundFileDescription.bIsSeekable = InputDescription.bIsSeekable;
TSharedPtr<FSoundFileWriter> SoundFileWriter = AudioModule->CreateSoundFileWriter();
Error = SoundFileWriter->Init(NewSoundFileDescription, ChannelMap, ConvertFormat.EncodingQuality);
check(Error == ESoundFileError::NONE);
// Create a buffer to do the processing
SoundFileCount ProcessBufferSamples = 1024 * NewSoundFileDescription.NumChannels;
TArray<float> ProcessBuffer;
ProcessBuffer.Init(0.0f, ProcessBufferSamples);
double SampleRateConversionRatio = (double)InputDescription.SampleRate / ConvertFormat.SampleRate;
FSampleRateConverter SampleRateConverter;
SampleRateConverter.Init(SampleRateConversionRatio, NewSoundFileDescription.NumChannels);
TArray<float> OutputBuffer;
SoundFileCount OutputBufferSamples = ProcessBufferSamples / SampleRateConversionRatio;
OutputBuffer.Reserve(OutputBufferSamples);
// Find the max value if we've been told to do peak normalization on import
float MaxValue = 0.0f;
SoundFileCount InputSamplesRead = 0;
bool bPerformPeakNormalization = ConvertFormat.bPerformPeakNormalization;
if (bPerformPeakNormalization)
{
Error = InputSoundFileReader->ReadSamples(ProcessBuffer.GetData(), ProcessBufferSamples, InputSamplesRead);
SOUND_CONVERT_CHECK(Error);
while (InputSamplesRead)
{
for (SoundFileCount Sample = 0; Sample < InputSamplesRead; ++Sample)
{
if (ProcessBuffer[Sample] > FMath::Abs(MaxValue))
{
MaxValue = ProcessBuffer[Sample];
}
}
Error = InputSoundFileReader->ReadSamples(ProcessBuffer.GetData(), ProcessBufferSamples, InputSamplesRead);
SOUND_CONVERT_CHECK(Error);
}
// If this happens, it means we have a totally silent file
if (MaxValue == 0.0)
{
bPerformPeakNormalization = false;
}
// Seek the file back to the beginning
SoundFileCount OutOffset;
InputSoundFileReader->SeekFrames(0, ESoundFileSeekMode::FROM_START, OutOffset);
}
bool SamplesProcessed = true;
// Read the first block of samples
Error = InputSoundFileReader->ReadSamples(ProcessBuffer.GetData(), ProcessBufferSamples, InputSamplesRead);
SOUND_CONVERT_CHECK(Error);
while (InputSamplesRead != 0)
{
SampleRateConverter.ProcessBlock(ProcessBuffer.GetData(), InputSamplesRead, OutputBuffer);
SoundFileCount SamplesWritten;
Error = SoundFileWriter->WriteSamples((const float*)OutputBuffer.GetData(), OutputBuffer.Num(), SamplesWritten);
SOUND_CONVERT_CHECK(Error);
DEBUG_AUDIO_CHECK(SamplesWritten == OutputBuffer.Num());
OutputBuffer.Reset();
// read more samples
Error = InputSoundFileReader->ReadSamples(ProcessBuffer.GetData(), ProcessBufferSamples, InputSamplesRead);
SOUND_CONVERT_CHECK(Error);
// ... normalize the samples if we're told to
if (bPerformPeakNormalization)
{
for (int32 Sample = 0; Sample < InputSamplesRead; ++Sample)
{
ProcessBuffer[Sample] /= MaxValue;
}
}
}
// Release the sound file handles as soon as we finished converting the file
InputSoundFileReader->Release();
SoundFileWriter->Release();
// Get the raw binary data
TArray<uint8>* Data = nullptr;
SoundFileWriter->GetData(&Data);
// Write the data to the output file
bool bSuccess = FFileHelper::SaveArrayToFile(*Data, *OutSoundFilePath);
check(bSuccess);
}
FVoice::~FVoice()
{
DEBUG_AUDIO_CHECK(VoiceDataIndex == INDEX_NONE);
}
bool FVolumeManager::IsFadedOut(uint32 VoiceDataIndex) const
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Baseline[VoiceDataIndex] > 0.0f);
return FadeScale.EndValue[VoiceDataIndex] == 0.0f && FadeScale.bIsDone[VoiceDataIndex];
}
void FVolumeManager::SetFadeOut(uint32 VoiceDataIndex, float FadeTimeSec)
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Baseline[VoiceDataIndex] > 0.0f);
FadeScale.SetValue(VoiceDataIndex, 0.0f, LastTimeSec, FadeTimeSec);
}
void FVolumeManager::SetAttenuation(uint32 VoiceDataIndex, float InAttenuation)
{
DEBUG_AUDIO_CHECK(VoiceDataIndex < (uint32)Baseline.Num());
DEBUG_AUDIO_CHECK(Baseline[VoiceDataIndex] > 0.0f);
Attenuation[VoiceDataIndex] = InAttenuation;
}