text: // Copyright (C) 2002-2007 Nikolaus Gebhardt
  // This file is part of the "Irrlicht Engine".
  // For conditions of distribution and use, see copyright notice in irrlicht.h
  
  #ifndef __C_IMAGE_LOADER_BMP_H_INCLUDED__
  #define __C_IMAGE_LOADER_BMP_H_INCLUDED__
  
  #include "IImageLoader.h"
  
  
  namespace irr
  {
  namespace video
  {
  
  
  	// byte-align structures
  #if defined(_MSC_VER) ||  defined(__BORLANDC__) || defined (__BCPLUSPLUS__) 
  #	pragma pack( push, packing )
  #	pragma pack( 1 )
  #	define PACK_STRUCT
  #elif defined( __GNUC__ )
  #	define PACK_STRUCT	__attribute__((packed))
  #elif defined(__SYMBIAN32__)    
  #   if defined(__WINS__)
  #     define PACK_STRUCT 
  #     pragma pack(1)
  #   elif defined(__ARMCC__)
  #     define PACK_STRUCT 
  #   else
  #	  define PACK_STRUCT	__attribute__((packed,aligned(1)))
  #   endif
  #else
  #	error compiler not supported
  #endif
  
  #if defined(__SYMBIAN32__) && defined(__ARMCC__)
      __packed 
  #endif    
      struct SBMPHeader
  	{
  		u16	Id;					//	BM - Windows 3.1x, 95, NT, 98, 2000, ME, XP
  											//	BA - OS/2 Bitmap Array
  											//	CI - OS/2 Color Icon
  											//	CP - OS/2 Color Pointer
  											//	IC - OS/2 Icon
  											//	PT - OS/2 Pointer
  		u32	FileSize;
  		u32	Reserved;
  		u32	BitmapDataOffset;
  		u32	BitmapHeaderSize;	// should be 28h for windows bitmaps or
  											// 0Ch for OS/2 1.x or F0h for OS/2 2.x
  		u32 Width;
  		u32 Height;
  		u16 Planes;
  		u16 BPP;					// 1: Monochrome bitmap
  											// 4: 16 color bitmap
  											// 8: 256 color bitmap
  											// 16: 16bit (high color) bitmap
  											// 24: 24bit (true color) bitmap
  											// 32: 32bit (true color) bitmap
  
  		u32  Compression;			// 0: none (Also identified by BI_RGB)
  											// 1: RLE 8-bit / pixel (Also identified by BI_RLE4)
  											// 2: RLE 4-bit / pixel (Also identified by BI_RLE8)
  											// 3: Bitfields  (Also identified by BI_BITFIELDS)
  
  		u32  BitmapDataSize;		// Size of the bitmap data in bytes. This number must be rounded to the next 4 byte boundary.
  		u32  PixelPerMeterX;
  		u32  PixelPerMeterY;
  		u32  Colors;
  		u32  ImportantColors;
  	} PACK_STRUCT;
  
  
  // Default alignment
  #if defined(_MSC_VER) ||  defined(__BORLANDC__) || defined (__BCPLUSPLUS__) 
  #	pragma pack( pop, packing )
  #elif defined(__SYMBIAN32__) && defined(__WINS__)
  #   pragma pack(4) //default alignment in Project settings 
  #endif
  
  #undef PACK_STRUCT
  
  
  /*!
  	Surface Loader for Windows bitmaps
  */
  class CImageLoaderBMP : public IImageLoader
  {
  public:
  
  	//! constructor
  	CImageLoaderBMP();
  
  	//! destructor
  	virtual ~CImageLoaderBMP();
  
  	//! returns true if the file maybe is able to be loaded by this class
  	//! based on the file extension (e.g. ".tga")
  	virtual bool isALoadableFileExtension(const c8* fileName);
  
  	//! returns true if the file maybe is able to be loaded by this class
  	virtual bool isALoadableFileFormat(irr::io::IReadFile* file);
  
  	//! creates a surface from the file
  	virtual IImage* loadImage(irr::io::IReadFile* file);
  
  private:
  
  	void decompress8BitRLE(u8*& BmpData, s32 size, s32 width, s32 height, s32 pitch);
  
  	void decompress4BitRLE(u8*& BmpData, s32 size, s32 width, s32 height, s32 pitch);
  
  	u8* BmpData;
  	s32* PaletteData;
  
  };
  
  
  } // end namespace video
  } // end namespace irr
  
  
  #endif
  
  