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45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// Copyright 1998-2019 Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#ifndef WITH_CRUNCH
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#define WITH_CRUNCH 1
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#endif
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/** Crunch compression lib is currently only built for Windows */
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#define WITH_CRUNCH_COMPRESSION (WITH_CRUNCH && WITH_EDITOR && PLATFORM_WINDOWS)
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#if WITH_CRUNCH
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#if WITH_CRUNCH_COMPRESSION
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/** Crunch compression */
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struct FCrunchEncodeParameters
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{
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TArray<TArray<uint32>> RawImagesRGBA;
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FName OutputFormat;
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float CompressionAmmount = 0.0f; // 0 min compression, 1 max compression
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uint32 ImageWidth = 0u;
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uint32 ImageHeight = 0u;
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uint32 NumWorkerThreads = 0u;
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bool bIsGammaCorrected = false;
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};
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namespace CrunchCompression
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{
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CRUNCHCOMPRESSION_API bool IsValidFormat(const FName& Format);
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CRUNCHCOMPRESSION_API bool Encode(const FCrunchEncodeParameters& Parameters, TArray<uint8>& OutCodecPayload, TArray<TArray<uint8>>& OutTilePayload);
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}
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#endif // WITH_CRUNCH_COMPRESSION
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/** Decompression */
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namespace CrunchCompression
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{
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CRUNCHCOMPRESSION_API void* InitializeDecoderContext(const void* HeaderData, size_t HeaderDataSize);
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CRUNCHCOMPRESSION_API bool Decode(void* Context, const void* CompressedPixelData, uint32 Slice, void* OutUncompressedData, size_t OutDataSize, size_t OutUncompressedDataPitch);
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CRUNCHCOMPRESSION_API void DestroyDecoderContext(void* Context);
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}
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#endif // WITH_CRUNCH
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