90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#ifndef __C_IMAGE_LOADER_BMP_H_INCLUDED__
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#define __C_IMAGE_LOADER_BMP_H_INCLUDED__
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#include "IImageLoader.h"
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namespace irr
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{
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namespace video
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{
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// byte-align structures
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#include "irrpack.h"
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struct SBMPHeader
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{
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u16 Id; // BM - Windows 3.1x, 95, NT, 98, 2000, ME, XP
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// BA - OS/2 Bitmap Array
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// CI - OS/2 Color Icon
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// CP - OS/2 Color Pointer
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// IC - OS/2 Icon
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// PT - OS/2 Pointer
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u32 FileSize;
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u32 Reserved;
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u32 BitmapDataOffset;
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u32 BitmapHeaderSize; // should be 28h for windows bitmaps or
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// 0Ch for OS/2 1.x or F0h for OS/2 2.x
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u32 Width;
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u32 Height;
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u16 Planes;
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u16 BPP; // 1: Monochrome bitmap
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// 4: 16 color bitmap
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// 8: 256 color bitmap
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// 16: 16bit (high color) bitmap
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// 24: 24bit (true color) bitmap
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// 32: 32bit (true color) bitmap
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u32 Compression; // 0: none (Also identified by BI_RGB)
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// 1: RLE 8-bit / pixel (Also identified by BI_RLE4)
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// 2: RLE 4-bit / pixel (Also identified by BI_RLE8)
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// 3: Bitfields (Also identified by BI_BITFIELDS)
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u32 BitmapDataSize; // Size of the bitmap data in bytes. This number must be rounded to the next 4 byte boundary.
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u32 PixelPerMeterX;
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u32 PixelPerMeterY;
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u32 Colors;
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u32 ImportantColors;
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} PACK_STRUCT;
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// Default alignment
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#include "irrunpack.h"
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/*!
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Surface Loader for Windows bitmaps
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*/
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class CImageLoaderBMP : public IImageLoader
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{
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public:
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//! constructor
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CImageLoaderBMP();
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//! returns true if the file maybe is able to be loaded by this class
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//! based on the file extension (e.g. ".tga")
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bool isALoadableFileExtension(const io::path& filename) const override;
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//! returns true if the file maybe is able to be loaded by this class
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bool isALoadableFileFormat(io::IReadFile* file) const override;
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//! creates a surface from the file
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IImage* loadImage(io::IReadFile* file) const override;
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private:
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void decompress8BitRLE(u8*& BmpData, s32 size, s32 width, s32 height, s32 pitch) const;
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void decompress4BitRLE(u8*& BmpData, s32 size, s32 width, s32 height, s32 pitch) const;
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};
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} // end namespace video
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} // end namespace irr
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#endif
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