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#rb Helen.Yang #jira UE-151659, UE-151662 #p4v-preflight-copy 20381225 #preflight 6298ca1eb72f596b0fcb2f07 [CL 20469618 by phil popp in ue5-main branch]
110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "MetasoundBuilderInterface.h"
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#include "MetasoundGraph.h"
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#include "MetasoundFrontendDataTypeRegistry.h"
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#include "MetasoundFrontendDocument.h"
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#include "MetasoundFrontendRegistries.h"
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// Forward Declarations
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class FMetasoundAssetBase;
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namespace Metasound
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{
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namespace Frontend
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{
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/** Generates a new FMetasoundFrontendClass from Node Metadata
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*
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* @param InNodeMetadata - Metadata describing an external node.
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*
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* @return FrontendClass for natively-defined node.
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*/
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METASOUNDFRONTEND_API FMetasoundFrontendClass GenerateClass(const FNodeClassMetadata& InNodeMetadata, EMetasoundFrontendClassType ClassType=EMetasoundFrontendClassType::External);
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/** Generates a new FMetasoundFrontendClass from node lookup info.
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*
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* @param InInfo - Class info for a already registered external node.
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*
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* @return FrontendClass for natively-defined node.
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*/
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METASOUNDFRONTEND_API FMetasoundFrontendClass GenerateClass(const Metasound::Frontend::FNodeRegistryKey& InKey);
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/** Generates a new FMetasoundFrontendClass from Node init data
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*
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* @tparam NodeType - Type of node to instantiate.
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* @param InNodeInitData - Data used to call constructor of node.
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*
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* @return FrontendClass for natively-defined node.
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*/
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template<typename NodeType>
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FMetasoundFrontendClass GenerateClass(const FNodeInitData& InNodeInitData)
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{
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TUniquePtr<INode> Node = MakeUnique<NodeType>(InNodeInitData);
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if (ensure(Node.IsValid()))
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{
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return GenerateClass(Node->GetMetadata());
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}
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return FMetasoundFrontendClass();
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}
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/** Generates a new FMetasoundFrontendClass from a NodeType
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*
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* @tparam NodeType - Type of node.
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*
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* @return FrontendClass for natively-defined node.
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*/
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template<typename NodeType>
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FMetasoundFrontendClass GenerateClass()
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{
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FNodeInitData InitData;
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InitData.InstanceName = "GeneratedClass";
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return GenerateClass<NodeType>(InitData);
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}
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// Takes a JSON string and deserializes it into a Metasound document struct.
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// @returns false if the file couldn't be found or parsed into a document.
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METASOUNDFRONTEND_API bool ImportJSONToMetasound(const FString& InJSON, FMetasoundFrontendDocument& OutMetasoundDocument);
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// Opens a json document at the given absolute path and deserializes it into a Metasound document struct.
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// @returns false if the file couldn't be found or parsed into a document.
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METASOUNDFRONTEND_API bool ImportJSONAssetToMetasound(const FString& InPath, FMetasoundFrontendDocument& OutMetasoundDocument);
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// Struct that indicates whether an input and an output can be connected,
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// and whether an intermediate node is necessary to connect the two.
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struct METASOUNDFRONTEND_API FConnectability
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{
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enum class EConnectable
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{
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Yes,
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No,
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YesWithConverterNode
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};
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enum class EReason : uint8
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{
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None,
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IncompatibleDataTypes,
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CausesLoop,
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IncompatibleAccessTypes
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};
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EConnectable Connectable = EConnectable::No;
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EReason Reason = EReason::None;
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// If Connectable is EConnectable::YesWithConverterNode,
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// this will be a populated list of nodes we can use
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// to convert between the input and output.
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TArray<FConverterNodeInfo> PossibleConverterNodeClasses;
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};
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} // namespace Frontend
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} // namespace Metasound
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