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#jira VLN-1183 #rb trivial [FYI] Alexis.Matte #ROBOMERGE-SOURCE: CL 15623903 in //UE5/Release-5.0-EarlyAccess/... #ROBOMERGE-BOT: STARSHIP (Release-5.0-EarlyAccess -> Main) (v777-15581079) [CL 15623925 by julien stjean in ue5-main branch]
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "TgaImageWrapper.h"
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#include "ImageWrapperPrivate.h"
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#include "TgaImageSupport.h"
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void FTgaImageWrapper::Compress(int32 Quality)
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{
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checkf(false, TEXT("TGA compression not supported"));
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}
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bool FTgaImageWrapper::SetCompressed(const void* InCompressedData, int64 InCompressedSize)
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{
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bool bResult = FImageWrapperBase::SetCompressed(InCompressedData, InCompressedSize);
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return bResult && LoadTGAHeader();
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}
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void FTgaImageWrapper::Uncompress(const ERGBFormat InFormat, const int32 InBitDepth)
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{
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const int32 BytesPerPixel = ( InFormat == ERGBFormat::Gray ? 1 : 4 );
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RawData.AddUninitialized( (int64)Width * Height * BytesPerPixel );
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const int32 TextureDataSize = RawData.Num();
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uint32* TextureData = reinterpret_cast< uint32* >( RawData.GetData() );
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FTGAFileHeader* TgaHeader = reinterpret_cast< FTGAFileHeader* >( CompressedData.GetData() );
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if ( !DecompressTGA_helper( TgaHeader, CompressedData.Num(), TextureData, TextureDataSize ) )
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{
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SetError(TEXT("Error while decompressing a TGA"));
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}
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}
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bool FTgaImageWrapper::LoadTGAHeader()
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{
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check( CompressedData.Num() );
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const FTGAFileHeader* TgaHeader = (FTGAFileHeader*)CompressedData.GetData();
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if ( CompressedData.Num() >= sizeof( FTGAFileHeader ) &&
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( (TgaHeader->ColorMapType == 0 && TgaHeader->ImageTypeCode == 2) ||
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( TgaHeader->ColorMapType == 0 && TgaHeader->ImageTypeCode == 3 ) || // ImageTypeCode 3 is greyscale
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( TgaHeader->ColorMapType == 0 && TgaHeader->ImageTypeCode == 10 ) ||
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( TgaHeader->ColorMapType == 1 && TgaHeader->ImageTypeCode == 1 && TgaHeader->BitsPerPixel == 8 ) ) )
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{
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Width = TgaHeader->Width;
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Height = TgaHeader->Height;
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ColorMapType = TgaHeader->ColorMapType;
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ImageTypeCode = TgaHeader->ImageTypeCode;
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BitDepth = TgaHeader->BitsPerPixel;
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return true;
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}
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else
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{
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return false;
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}
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}
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