84 lines
2.2 KiB
C++
84 lines
2.2 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 "AssetRegistry/AssetDataTagMapSerializationDetails.h"
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#include "Serialization/LargeMemoryWriter.h"
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#include "UObject/NameBatchSerialization.h"
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struct FAssetData;
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struct FAssetRegistrySerializationOptions;
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/** @see FAssetRegistryWriter */
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class FAssetRegistryReader: public FArchiveProxy
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{
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public:
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/// @param NumWorkers > 0 for parallel loading
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FAssetRegistryReader(FArchive& Inner, int32 NumWorkers = 0);
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~FAssetRegistryReader();
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virtual FArchive& operator<<(FName& Value) override;
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void SerializeTagsAndBundles(FAssetData& Out);
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void WaitForTasks();
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private:
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TArray<FNameEntryId> Names;
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TRefCountPtr<const FixedTagPrivate::FStore> Tags;
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TFuture<void> Task;
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friend FAssetDataTagMapSharedView LoadTags(FAssetRegistryReader& Reader);
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};
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#if ALLOW_NAME_BATCH_SAVING
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class FAssetRegistryWriterBase
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{
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protected:
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FLargeMemoryWriter MemWriter;
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};
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struct FAssetRegistryWriterOptions
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{
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FAssetRegistryWriterOptions() = default;
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explicit FAssetRegistryWriterOptions(const FAssetRegistrySerializationOptions& Options);
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FixedTagPrivate::FOptions Tags;
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};
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/**
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* Indexes FName and tag maps and serializes out deduplicated indices instead.
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*
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* Unlike previous FNameTableArchiveWriter:
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* - Name data stored as name batches, which is faster
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* - Name batch is written as a header instead of footer for faster seek-free loading
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* - Numberless FNames are serialized as a single 32-bit int
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* - Deduplicates all tag values, not just names
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*
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* Use in conjunction with FNameBatchReader.
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*
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* Data is written to inner archive in destructor to achieve seek-free loading.
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*/
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class FAssetRegistryWriter: public FAssetRegistryWriterBase
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, public FArchiveProxy
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{
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public:
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FAssetRegistryWriter(const FAssetRegistryWriterOptions& Options, FArchive& Out);
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~FAssetRegistryWriter();
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virtual FArchive& operator<<(FName& Value) override;
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void SerializeTagsAndBundles(const FAssetData& In);
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private:
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TMap<FNameEntryId, uint32> Names;
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FixedTagPrivate::FStoreBuilder Tags;
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FArchive& TargetAr;
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friend void SaveTags(FAssetRegistryWriter& Writer, const FAssetDataTagMapSharedView& Map);
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};
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#endif
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