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#jira UE-156087 #rb rob.gay #preflight 634841dffd22d1fbde5d7d73 [CL 22512918 by phil popp in ue5-main branch]
113 lines
4.2 KiB
C++
113 lines
4.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Engine/Engine.h"
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#include "Engine/StreamableManager.h"
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#include "MetasoundAssetBase.h"
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#include "MetasoundAssetManager.h"
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#include "Subsystems/EngineSubsystem.h"
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#include "UObject/Object.h"
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#include "MetasoundAssetSubsystem.generated.h"
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// Forward Declarations
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class UAssetManager;
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class FMetasoundAssetBase;
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struct FDirectoryPath;
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USTRUCT(BlueprintType)
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struct METASOUNDENGINE_API FMetaSoundAssetDirectory
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{
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GENERATED_BODY()
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Directories, meta = (RelativePath, LongPackageName))
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FDirectoryPath Directory;
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};
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/** Contains info of assets which are currently async loading. */
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USTRUCT()
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struct FMetaSoundAsyncAssetDependencies
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{
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GENERATED_BODY()
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// ID of the async load
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int32 LoadID = 0;
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// Parent MetaSound
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UPROPERTY(Transient)
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TObjectPtr<UObject> MetaSound;
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// Dependencies of parent MetaSound
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TArray<FSoftObjectPath> Dependencies;
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// Handle to in-flight streaming request
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TSharedPtr<FStreamableHandle> StreamableHandle;
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};
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/** The subsystem in charge of the MetaSound asset registry */
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UCLASS()
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class METASOUNDENGINE_API UMetaSoundAssetSubsystem : public UEngineSubsystem, public Metasound::Frontend::IMetaSoundAssetManager
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{
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GENERATED_BODY()
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public:
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using FAssetInfo = Metasound::Frontend::IMetaSoundAssetManager::FAssetInfo;
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virtual void Initialize(FSubsystemCollectionBase& InCollection) override;
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Metasound::Frontend::FNodeRegistryKey AddOrUpdateAsset(const FAssetData& InAssetData);
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void RemoveAsset(const UObject& InObject);
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void RemoveAsset(const FAssetData& InAssetData);
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void RenameAsset(const FAssetData& InAssetData, bool bInReregisterWithFrontend = true);
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#if WITH_EDITORONLY_DATA
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virtual void AddAssetReferences(FMetasoundAssetBase& InAssetBase) override;
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#endif
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virtual Metasound::Frontend::FNodeRegistryKey AddOrUpdateAsset(const UObject& InObject) override;
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virtual bool CanAutoUpdate(const FMetasoundFrontendClassName& InClassName) const override;
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virtual bool ContainsKey(const Metasound::Frontend::FNodeRegistryKey& InRegistryKey) const override;
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virtual const FSoftObjectPath* FindObjectPathFromKey(const Metasound::Frontend::FNodeRegistryKey& RegistryKey) const override;
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#if WITH_EDITOR
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virtual TSet<FAssetInfo> GetReferencedAssetClasses(const FMetasoundAssetBase& InAssetBase) const override;
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#endif
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virtual void RescanAutoUpdateDenyList() override;
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virtual FMetasoundAssetBase* TryLoadAsset(const FSoftObjectPath& InObjectPath) const override;
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virtual FMetasoundAssetBase* TryLoadAssetFromKey(const Metasound::Frontend::FNodeRegistryKey& RegistryKey) const override;
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virtual bool TryLoadReferencedAssets(const FMetasoundAssetBase& InAssetBase, TArray<FMetasoundAssetBase*>& OutReferencedAssets) const override;
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virtual void RequestAsyncLoadReferencedAssets(FMetasoundAssetBase& InAssetBase) override;
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virtual void WaitUntilAsyncLoadReferencedAssetsComplete(FMetasoundAssetBase& InAssetBase) override;
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UFUNCTION(BlueprintCallable, Category = "MetaSounds|Registration")
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void RegisterAssetClassesInDirectories(const TArray<FMetaSoundAssetDirectory>& Directories);
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UFUNCTION(BlueprintCallable, Category = "MetaSounds|Registration")
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void UnregisterAssetClassesInDirectories(const TArray<FMetaSoundAssetDirectory>& Directories);
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protected:
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void PostEngineInit();
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void PostInitAssetScan();
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void RebuildDenyListCache(const UAssetManager& InAssetManager);
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void ResetAssetClassDisplayName(const FAssetData& InAssetData);
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void SearchAndIterateDirectoryAssets(const TArray<FDirectoryPath>& InDirectories, TFunctionRef<void(const FAssetData&)> InFunction);
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private:
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UPROPERTY(Transient)
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TArray<FMetaSoundAsyncAssetDependencies> LoadingDependencies;
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FMetaSoundAsyncAssetDependencies* FindLoadingDependencies(const UObject* InParentAsset);
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FMetaSoundAsyncAssetDependencies* FindLoadingDependencies(int32 InLoadID);
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void RemoveLoadingDependencies(int32 InLoadID);
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void OnAssetsLoaded(int32 InLoadID);
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FStreamableManager StreamableManager;
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int32 AsyncLoadIDCounter = 0;
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int32 AutoUpdateDenyListChangeID = INDEX_NONE;
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TSet<FName> AutoUpdateDenyListCache;
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TMap<Metasound::Frontend::FNodeRegistryKey, FSoftObjectPath> PathMap;
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std::atomic<bool> bIsInitialAssetScanComplete = false;
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};
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