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[REVIEW] [at]phil.popp [at]rob.gay [at]aaron.mcleran #preflight 639b5db4012902cb8d76c448 [CL 23532613 by buzz burrowes in ue5-main branch]
71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Templates/SharedPointer.h"
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#include "MetasoundParameterPack.h"
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#include "MetasoundGeneratorHandle.generated.h"
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class UAudioComponent;
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class UMetaSoundSource;
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class UMetasoundParameterPack;
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namespace Metasound
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{
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class FMetasoundGenerator;
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}
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UCLASS(BlueprintType,Category="MetaSound")
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class METASOUNDENGINE_API UMetasoundGeneratorHandle : public UObject
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{
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GENERATED_BODY()
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public:
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UFUNCTION(BlueprintCallable, Category="MetaSound")
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static UMetasoundGeneratorHandle* CreateMetaSoundGeneratorHandle(UAudioComponent* OnComponent);
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/**
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* Makes a copy of the supplied parameter pack and passes it to the MetaSoundGenerator
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* for asynchronous processing. IT ALSO caches this copy so that if the AudioComponent
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* is virtualized the parameter pack will be sent again when/if the AudioComponent is
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* "unvirtualized".
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*/
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UFUNCTION(BlueprintCallable, Category="MetaSoundParameterPack")
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bool ApplyParameterPack(UMetasoundParameterPack* Pack);
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private:
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void SetAudioComponent(UAudioComponent* InAudioComponent);
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void CacheMetasoundSource();
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void ClearCachedData();
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/**
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* Attempts to pin the weak generator pointer. If the first attempt fails it checks to see
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* if it can "recapture" a pointer to a generator for the current AudioComponent/MetaSoundSource
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* combination.
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*/
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TSharedPtr<Metasound::FMetasoundGenerator> PinGenerator();
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/**
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* Functions for adding and removing our MetaSoundGenerator lifecycle delegates
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*/
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void AttachGeneratorDelegates();
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void DetachGeneratorDelegates();
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/**
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* Generator creation and destruction delegates we register with the UMetaSoundSource
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*/
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void OnSourceCreatedAGenerator(uint64 InAudioComponentId, TSharedPtr<Metasound::FMetasoundGenerator> InGenerator);
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void OnSourceDestroyedAGenerator(uint64 InAudioComponentId, TSharedPtr<Metasound::FMetasoundGenerator> InGenerator);
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UPROPERTY(Transient)
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TObjectPtr<UAudioComponent> AudioComponent;
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uint64 AudioComponentId;
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UPROPERTY(Transient)
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TObjectPtr<UMetaSoundSource> CachedMetasoundSource;
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TWeakPtr<Metasound::FMetasoundGenerator> CachedGeneratorPtr;
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FSharedMetasoundParameterStoragePtr CachedParameterPack;
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FDelegateHandle GeneratorCreatedDelegateHandle;
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FDelegateHandle GeneratorDestroyedDelegateHandle;
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}; |