75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
|
|
|
|
#include "Analysis/MetasoundFrontendVertexAnalyzerTriggerDensity.h"
|
|
|
|
#include "MetasoundDataReference.h"
|
|
#include "MetasoundPrimitives.h"
|
|
#include "MetasoundRouter.h"
|
|
#include "MetasoundTrigger.h"
|
|
|
|
|
|
namespace Metasound
|
|
{
|
|
namespace Frontend
|
|
{
|
|
const FAnalyzerOutput& FVertexAnalyzerTriggerDensity::FOutputs::GetValue()
|
|
{
|
|
static const FAnalyzerOutput Value = { "TriggerDensity", GetMetasoundDataTypeName<float>() };
|
|
return Value;
|
|
}
|
|
|
|
const FName& FVertexAnalyzerTriggerDensity::GetAnalyzerName()
|
|
{
|
|
static const FName AnalyzerName = "UE.Trigger.Density";
|
|
return AnalyzerName;
|
|
}
|
|
|
|
const FName& FVertexAnalyzerTriggerDensity::GetDataType()
|
|
{
|
|
return GetMetasoundDataTypeName<FTrigger>();
|
|
}
|
|
|
|
FVertexAnalyzerTriggerDensity::FVertexAnalyzerTriggerDensity(const FCreateAnalyzerParams& InParams)
|
|
: FVertexAnalyzerBase(InParams.AnalyzerAddress, InParams.VertexDataReference)
|
|
, EnvelopeValue(TDataWriteReference<float>::CreateNew())
|
|
, NumFramesPerBlock(InParams.OperatorSettings.GetNumFramesPerBlock())
|
|
{
|
|
Audio::FEnvelopeFollowerInitParams Params;
|
|
Params.Mode = Audio::EPeakMode::Peak;
|
|
Params.SampleRate = InParams.OperatorSettings.GetSampleRate();
|
|
Params.NumChannels = 1;
|
|
Params.AttackTimeMsec = 0;
|
|
Params.ReleaseTimeMsec = 120;
|
|
EnvelopeFollower.Init(Params);
|
|
|
|
FVertexAnalyzerBase::BindOutputData<float>(FOutputs::GetValue().Name, InParams.OperatorSettings, TDataReadReference<float>(EnvelopeValue));
|
|
}
|
|
|
|
FVertexAnalyzerTriggerDensity::~FVertexAnalyzerTriggerDensity() = default;
|
|
|
|
void FVertexAnalyzerTriggerDensity::Execute()
|
|
{
|
|
const FTrigger& Trigger = GetVertexData<FTrigger>();
|
|
|
|
ScratchBuffer.Reset();
|
|
ScratchBuffer.AddZeroed(NumFramesPerBlock);
|
|
for (int32 i = 0; i < Trigger.Num(); ++i)
|
|
{
|
|
const int32 TriggerIndex = Trigger[i];
|
|
// Can trigger in the future so ignore those beyond the current block
|
|
if (TriggerIndex < ScratchBuffer.Num())
|
|
{
|
|
ScratchBuffer[TriggerIndex] = 1.0f;
|
|
}
|
|
}
|
|
|
|
EnvelopeFollower.ProcessAudio(ScratchBuffer.GetData(), ScratchBuffer.Num());
|
|
|
|
check(EnvelopeFollower.GetEnvelopeValues().Num() == 1);
|
|
*EnvelopeValue = EnvelopeFollower.GetEnvelopeValues().Last();
|
|
|
|
MarkOutputDirty();
|
|
}
|
|
} // namespace Frontend
|
|
} // namespace Metasound
|