TgaImageSupport.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "HAL/Platform.h"
#include "Serialization/Archive.h"
 
#pragma pack(push,1)
struct FTGAFileHeader
{
    uint8 IdFieldLength;
    uint8 ColorMapType;
    uint8 ImageTypeCode;        // 2 for uncompressed RGB format
    uint16 ColorMapOrigin;
    uint16 ColorMapLength;
    uint8 ColorMapEntrySize;
    uint16 XOrigin;
    uint16 YOrigin;
    uint16 Width;
    uint16 Height;
    uint8 BitsPerPixel;
    uint8 ImageDescriptor;
 
    friend FArchive& operator<<( FArchive& Ar, FTGAFileHeader& H )
    {
        Ar << H.IdFieldLength << H.ColorMapType << H.ImageTypeCode;
        Ar << H.ColorMapOrigin << H.ColorMapLength << H.ColorMapEntrySize;
        Ar << H.XOrigin << H.YOrigin << H.Width << H.Height << H.BitsPerPixel;
        Ar << H.ImageDescriptor;
        return Ar;
    }
};
#pragma pack(pop)
 
IMAGEWRAPPER_API bool DecompressTGA_helper( const FTGAFileHeader* TGA, const int64 TGABufferLength, uint32* TextureData, const int64 TextureDataSize );