minetest/irr/src/CImageLoaderTGA.h
2024-03-26 21:39:02 +01:00

67 lines
1.5 KiB
C++

// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#pragma once
#include "IImageLoader.h"
namespace irr
{
namespace video
{
// byte-align structures
#include "irrpack.h"
// these structs are also used in the TGA writer
struct STGAHeader
{
u8 IdLength;
u8 ColorMapType;
u8 ImageType;
u8 FirstEntryIndex[2];
u16 ColorMapLength;
u8 ColorMapEntrySize;
u8 XOrigin[2];
u8 YOrigin[2];
u16 ImageWidth;
u16 ImageHeight;
u8 PixelDepth;
u8 ImageDescriptor;
} PACK_STRUCT;
struct STGAFooter
{
u32 ExtensionOffset;
u32 DeveloperOffset;
c8 Signature[18];
} PACK_STRUCT;
// Default alignment
#include "irrunpack.h"
/*!
Surface Loader for targa images
*/
class CImageLoaderTGA : public IImageLoader
{
public:
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".tga")
bool isALoadableFileExtension(const io::path &filename) const override;
//! returns true if the file maybe is able to be loaded by this class
bool isALoadableFileFormat(io::IReadFile *file) const override;
//! creates a surface from the file
IImage *loadImage(io::IReadFile *file) const override;
private:
//! loads a compressed tga. Was written and sent in by Jon Pry, thank you very much!
u8 *loadCompressedImage(io::IReadFile *file, const STGAHeader &header) const;
};
} // end namespace video
} // end namespace irr