139 lines
4.5 KiB
C++
139 lines
4.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Internationalization/Text.h"
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#include "MetasoundFacade.h"
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#include "MetasoundExecutableOperator.h"
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#include "MetasoundNodeRegistrationMacro.h"
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#include "MetasoundPrimitives.h"
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#include "MetasoundStandardNodesNames.h"
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#include "MetasoundStandardNodesCategories.h"
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#include "DSP/Dsp.h"
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#include "MetasoundParamHelper.h"
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#define LOCTEXT_NAMESPACE "MetasoundStandardNodes_DecibelsToLinearGain"
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namespace Metasound
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{
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namespace DecibelsToLinearGainVertexNames
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{
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METASOUND_PARAM(InputDecibelGain, "Decibels", "Input logarithmic (dB) gain.");
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METASOUND_PARAM(OutputLinearGain, "Linear Gain", "Output corresponding linear gain.");
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}
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class FDecibelsToLinearGainOperator : public TExecutableOperator<FDecibelsToLinearGainOperator>
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{
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public:
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static const FNodeClassMetadata& GetNodeInfo();
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static const FVertexInterface& GetVertexInterface();
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static TUniquePtr<IOperator> CreateOperator(const FBuildOperatorParams& InParams, FBuildResults& OutResults);
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FDecibelsToLinearGainOperator(const FBuildOperatorParams& InParams, const FFloatReadRef& InDecibelGain);
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virtual void BindInputs(FInputVertexInterfaceData& InOutVertexData) override;
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virtual void BindOutputs(FOutputVertexInterfaceData& InOutVertexData) override;
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void Reset(const IOperator::FResetParams& InParams);
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void Execute();
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private:
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// The input dB value
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FFloatReadRef DecibelGainInput;
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// The output linear gain
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FFloatWriteRef LinearGainOutput;
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};
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FDecibelsToLinearGainOperator::FDecibelsToLinearGainOperator(const FBuildOperatorParams& InParams, const FFloatReadRef& InDecibelGain)
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: DecibelGainInput(InDecibelGain)
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, LinearGainOutput(FFloatWriteRef::CreateNew())
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{
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Reset(InParams);
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}
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void FDecibelsToLinearGainOperator::BindInputs(FInputVertexInterfaceData& InOutVertexData)
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{
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using namespace DecibelsToLinearGainVertexNames;
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InOutVertexData.BindReadVertex(METASOUND_GET_PARAM_NAME(InputDecibelGain), DecibelGainInput);
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}
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void FDecibelsToLinearGainOperator::BindOutputs(FOutputVertexInterfaceData& InOutVertexData)
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{
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using namespace DecibelsToLinearGainVertexNames;
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InOutVertexData.BindReadVertex(METASOUND_GET_PARAM_NAME(OutputLinearGain), LinearGainOutput);
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}
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void FDecibelsToLinearGainOperator::Reset(const IOperator::FResetParams& InParams)
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{
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Execute();
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}
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void FDecibelsToLinearGainOperator::Execute()
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{
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*LinearGainOutput = Audio::ConvertToLinear(*DecibelGainInput);
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}
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const FVertexInterface& FDecibelsToLinearGainOperator::GetVertexInterface()
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{
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using namespace DecibelsToLinearGainVertexNames;
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static const FVertexInterface Interface(
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FInputVertexInterface(
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TInputDataVertex<float>(METASOUND_GET_PARAM_NAME_AND_METADATA(InputDecibelGain), 0.0f)
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),
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FOutputVertexInterface(
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TOutputDataVertex<float>(METASOUND_GET_PARAM_NAME_AND_METADATA(OutputLinearGain))
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)
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);
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return Interface;
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}
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const FNodeClassMetadata& FDecibelsToLinearGainOperator::GetNodeInfo()
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{
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auto InitNodeInfo = []() -> FNodeClassMetadata
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{
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const FName DataTypeName = GetMetasoundDataTypeName<float>();
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const FName OperatorName = TEXT("Decibels to Linear Gain");
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const FText NodeDisplayName = METASOUND_LOCTEXT("Metasound_DecibelsToLinearGainName", "Decibels to Linear Gain");
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const FText NodeDescription = METASOUND_LOCTEXT("Metasound_DecibelsToLinearGainDescription", "Converts a logarithmic (dB) gain value to a linear gain value.");
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FNodeClassMetadata Info;
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Info.ClassName = { StandardNodes::Namespace, OperatorName, DataTypeName };
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Info.MajorVersion = 1;
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Info.MinorVersion = 0;
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Info.DisplayName = NodeDisplayName;
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Info.Description = NodeDescription;
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Info.Author = PluginAuthor;
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Info.PromptIfMissing = PluginNodeMissingPrompt;
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Info.DefaultInterface = GetVertexInterface();
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Info.CategoryHierarchy.Emplace(NodeCategories::Dynamics);
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return Info;
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};
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static const FNodeClassMetadata Info = InitNodeInfo();
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return Info;
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}
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TUniquePtr<IOperator> FDecibelsToLinearGainOperator::CreateOperator(const FBuildOperatorParams& InParams, FBuildResults& OutResults)
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{
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using namespace DecibelsToLinearGainVertexNames;
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const FInputVertexInterfaceData& InputData = InParams.InputData;
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FFloatReadRef InDecibelGain = InputData.GetOrCreateDefaultDataReadReference<float>(METASOUND_GET_PARAM_NAME(InputDecibelGain), InParams.OperatorSettings);
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return MakeUnique<FDecibelsToLinearGainOperator>(InParams, InDecibelGain);
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}
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using FDecibelsToLinearGainNode = TNodeFacade<FDecibelsToLinearGainOperator>;
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METASOUND_REGISTER_NODE(FDecibelsToLinearGainNode)
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}
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#undef LOCTEXT_NAMESPACE
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