139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "MetasoundDataReference.h"
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#include "MetasoundFrontend.h"
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#include "MetasoundFrontendQuery.h"
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#include "MetasoundFrontendRegistries.h"
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#include "Misc/Guid.h"
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#include "Templates/PimplPtr.h"
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#define UE_API METASOUNDFRONTEND_API
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namespace Metasound
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{
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// Forward declare private implementation
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class FNodeClassRegistrationEventsPimpl;
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class FMapToNull : public IFrontendQueryMapStep
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{
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public:
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virtual FFrontendQueryKey Map(const FFrontendQueryEntry& InEntry) const override
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{
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return FFrontendQueryKey();
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}
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};
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/** Streams node classes that have been newly registered or unregistered since last call to Stream()
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*/
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class FNodeClassRegistrationEvents : public IFrontendQueryStreamStep
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{
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public:
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UE_API FNodeClassRegistrationEvents();
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UE_API virtual void Stream(TArray<FFrontendQueryValue>& OutValues) override;
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private:
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TPimplPtr<FNodeClassRegistrationEventsPimpl> Pimpl;
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};
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/** Partitions node registration events by their node registration keys. */
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class FMapRegistrationEventsToNodeRegistryKeys : public IFrontendQueryMapStep
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{
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public:
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UE_API virtual FFrontendQueryKey Map(const FFrontendQueryEntry& InEntry) const override;
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};
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/** Reduces registration events mapped to the same key by inspecting their add/remove state in
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* order to determine their final state. If an item has been added more than it has been removed,
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* then it is added to the output. Otherwise, it is omitted. */
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class FReduceRegistrationEventsToCurrentStatus: public IFrontendQueryReduceStep
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{
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public:
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UE_API virtual void Reduce(const FFrontendQueryKey& InKey, FFrontendQueryPartition& InOutEntries) const override;
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private:
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using FTimeType = Frontend::FNodeRegistryTransaction::FTimeType;
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static FTimeType GetTransactionTimestamp(const FFrontendQueryEntry& InEntry);
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static bool IsValidTransactionOfType(Frontend::FNodeRegistryTransaction::ETransactionType InType, const FFrontendQueryEntry* InEntry);
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};
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/** Transforms a registration event into a FMetasoundFrontendClass. */
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class FTransformRegistrationEventsToClasses : public IFrontendQueryTransformStep
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{
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public:
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UE_API virtual void Transform(FFrontendQueryEntry::FValue& InValue) const override;
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};
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class FFilterClassesByInputVertexDataType : public IFrontendQueryFilterStep
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{
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public:
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template<typename DataType>
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FFilterClassesByInputVertexDataType()
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: FFilterClassesByInputVertexDataType(GetMetasoundDataTypeName<DataType>())
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{
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}
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UE_API FFilterClassesByInputVertexDataType(const FName& InTypeName);
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UE_API virtual bool Filter(const FFrontendQueryEntry& InEntry) const override;
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private:
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FName InputVertexTypeName;
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};
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class FFilterClassesByOutputVertexDataType : public IFrontendQueryFilterStep
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{
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public:
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template<typename DataType>
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FFilterClassesByOutputVertexDataType()
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: FFilterClassesByOutputVertexDataType(GetMetasoundDataTypeName<DataType>())
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{
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}
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UE_API FFilterClassesByOutputVertexDataType(const FName& InTypeName);
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UE_API virtual bool Filter(const FFrontendQueryEntry& InEntry) const override;
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private:
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FName OutputVertexTypeName;
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};
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class FMapClassesToClassName : public IFrontendQueryMapStep
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{
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public:
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UE_API virtual FFrontendQueryKey Map(const FFrontendQueryEntry& InEntry) const override;
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};
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class FFilterClassesByClassID : public IFrontendQueryFilterStep
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{
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public:
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UE_API FFilterClassesByClassID(const FGuid InClassID);
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UE_API virtual bool Filter(const FFrontendQueryEntry& InEntry) const override;
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private:
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FGuid ClassID;
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};
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class FMapToFullClassName : public IFrontendQueryMapStep
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{
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public:
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UE_API virtual FFrontendQueryKey Map(const FFrontendQueryEntry& InEntry) const override;
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};
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class FReduceClassesToHighestVersion : public IFrontendQueryReduceStep
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{
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public:
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UE_API virtual void Reduce(const FFrontendQueryKey& InKey, FFrontendQueryPartition& InOutEntries) const override;
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};
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class FSortClassesByVersion : public IFrontendQuerySortStep
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{
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public:
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UE_API virtual bool Sort(const FFrontendQueryEntry& InEntryLHS, const FFrontendQueryEntry& InEntryRHS) const override;
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};
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}
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#undef UE_API
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