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- Conform template build step nominclature to "Document Preprocessing" (as it may be used either directly before building or at time post serialization) - Use new preprocessor to cache edge data for more performant reroute template processing #rb phil.popp #rnx #jira UE-160476 #preflight 62fbe79fad3bd8ad645963ec [CL 21413130 by Rob Gay in ue5-main branch]
65 lines
2.5 KiB
C++
65 lines
2.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "MetasoundFrontendController.h"
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#include "MetasoundFrontendDocument.h"
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#include "MetasoundFrontendTransform.h"
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#include "Templates/SharedPointer.h"
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#include "Templates/UniquePtr.h"
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#include "UObject/NoExportTypes.h"
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namespace Metasound
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{
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namespace Frontend
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{
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/**
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* Base interface for a node template, which acts in place of frontend node class and respective instance(s).
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* Instances are preprocessed, allowing for custom graph manipulation prior to generating a respective runtime
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* graph operator representation.
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*/
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class METASOUNDFRONTEND_API INodeTemplate
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{
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public:
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virtual ~INodeTemplate() = default;
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// Generates node transform that can cache document state for use when individually preprocessing nodes.
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virtual TUniquePtr<INodeTransform> GenerateNodeTransform(FMetasoundFrontendDocument& InDocument) const = 0;
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// Returns the class definition for the given node class template.
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virtual const FMetasoundFrontendClass& GetFrontendClass() const = 0;
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// Returns the version of the given node class template.
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virtual const FMetasoundFrontendVersion& GetVersion() const = 0;
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// Given the provided node interface, returns whether or not it conforms to an expected format
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// that can be successfully manipulated by a generated node template preprocessor.
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virtual bool IsValidNodeInterface(const FMetasoundFrontendNodeInterface& InNodeInterface) const = 0;
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#if WITH_EDITOR
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// Returns whether or not the given node template has the necessary
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// required connections to be preprocessed (editor only).
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virtual bool HasRequiredConnections(FConstNodeHandle InNodeHandle) const = 0;
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#endif // WITH_EDITOR
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};
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class METASOUNDFRONTEND_API INodeTemplateRegistry
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{
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public:
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// Returns singleton template registry.
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static INodeTemplateRegistry& Get();
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virtual ~INodeTemplateRegistry() = default;
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// Find a template with the given key. Returns null if entry not found with given key.
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virtual const INodeTemplate* FindTemplate(const FNodeRegistryKey& InKey) const = 0;
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};
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// Register & Unregister are not publicly accessible implementation as the API
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// is in beta and, currently, only to be used by internal implementation (ex. reroute nodes).
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void RegisterNodeTemplate(TUniquePtr<INodeTemplate>&& InTemplate);
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void UnregisterNodeTemplate(const FMetasoundFrontendVersion& InNodeTemplateVersion);
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} // namespace Frontend
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} // namespace Metasound
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