imageobject.h

一个完整的数字硬盘录像机系统软件

// ImageObject.h

#ifndef __IMAGEOBJECT_H__
#define __IMAGEOBJECT_H__
#define IMAGELIB_SUCCESS 0

// File errors
#define IMAGELIB_FILE_OPEN_ERROR -1
#define IMAGELIB_FILE_CREATION_ERROR -2
#define IMAGELIB_FILE_WRITE_ERROR -3
#define IMAGELIB_FILE_READ_ERROR -4

// Memory erros
#define IMAGELIB_MEMORY_ALLOCATION_ERROR -50
#define IMAGELIB_MEMORY_LOCK_ERROR -51

// Argument errors
#define IMAGELIB_NODIB -100

//
#define IMAGELIB_UNSUPPORTED_FILETYPE -200
#define IMAGELIB_HDIB_NULL -201
#define IMAGELIB_LOGICAL_PALETTE_CREATION_ERROR -202
#define IMAGELIB_NO_PALETTE_FOR_HIGH_COLOR -203
#define IMAGELIB_STRETCHDIBITS_ERROR -204
#define IMAGELIB_PALETTE_QUANTIZE_ERROR -205
#define IMAGELIB_ATTEMPT_CHANGE_TO_SAME 206
#define IMAGELIB_ROTATION_VALUE_ERROR -207
#define IMAGELIB_ROTATE_ERROR -208
#define POPULARITY_PALETTE 0
#define MEDIAN_CUT_PALETTE 1
#define FIXED_PALETTE 2

#pragma pack(1)
typedef struct{
	unsigned short m_nBlueList[256];
} GREENLIST;

typedef struct{
	GREENLIST *m_pGreenList[256];
} REDLIST;

typedef struct{
	unsigned short nCount;
	unsigned char ucRed;
	unsigned char ucGreen;
	unsigned char ucBlue;
} COUNTLIST;
#pragma pack()

#define GETRGB555( a, b, c, d ) { WORD *wData = (WORD *) d; a = (unsigned char) ( ( (*wData) & 0x7c00 ) >> 7 ); b = (unsigned char) ( ( (*wData) & 0x03e0 ) >> 2 ); c = (unsigned char) ( ( (*wData) & 0x001f ) << 3 ); }
#define GETRGB565( a, b, c, d ) { WORD *wData = (WORD *) d; a = (unsigned char) ( ( (*wData) & 0xf800 ) >> 8 ); b = (unsigned char) ( ( (*wData) & 0x07e0 ) >> 3 ); c = (unsigned char) ( ( (*wData) & 0x001f ) << 3 ); }
#define GETRGB888( a, b, c, d ) { DWORD *dwData = (DWORD *) d; a = (unsigned char) ( (*dwData) >> 16 ); b = (unsigned char) ( ( (*dwData) & 0x0000ff00 ) >> 8 ); c = (unsigned char) ( (*dwData) & 0x000000ff ); }
#define PUTRGB555( a, b, c, d ) { WORD *wData = (WORD *) d; *wData = ( ( ( (WORD) a & 0x00f8 ) << 7 ) | ( ( (WORD) b & 0x00f8 ) << 2 ) | ( (WORD) c >> 3 ) ); }
#define PUTRGB565( a, b, c, d ) { WORD *wData = (WORD *) d; *wData = ( ( ( (WORD) a & 0x00f8 ) << 8 ) | ( ( (WORD) b & 0x00fc ) << 3 ) | ( (WORD) c >> 3 ) ); }
#define PUTRGB888( a, b, c, d ) { DWORD *dwData = (DWORD *) d; *dwData = ( (DWORD) a << 16 ) | ( (DWORD) b << 8 ) | (DWORD) c; }

#define _RGB(r,g,b) (WORD)(((b)&~7)<<7)|(((g)&~7)<<2)|((r)>>3)

class  CImageObject
{
// Construction
public:
	CImageObject();
	CImageObject( const char *, CDC *pDC = NULL, int nX = -1, int nY = -1 );
	~CImageObject();
//attrib
public:
	int          m_nLastError,m_nScreenPlanes, m_nScreenBits, m_nPaletteBytes;
	static char *szExtensions[7];
protected:
	int          m_nWidth, m_nHeight, m_nPlanes, m_nBits, m_nColors, m_nImageType;
	int          m_nX, m_nY;
	int          m_nQuality;
	int          m_nPaletteCreationType;
	CPalette     m_Palette;
	HGLOBAL      m_hDib;
	char*        m_pszFilename;
	LOGPALETTE*  m_pLogPal;
// Operations
public:
	BOOL         Load( const char *, CDC *pDC = NULL, int nX = -1, int nY = -1 );
	int          GetLastError( void );
	BOOL         Save( const char *, int nType = -1 );
	int          GetWidth( void );
	int          GetHeight( void );
	int          GetNumBits( void );
	int          GetNumColors( void );
	BOOL         GetPaletteData( RGBQUAD * );
	RGBQUAD*     GetPaletteData( void );
	int          GetImageType( const char * );
	int          GetImageType( void );
	BOOL         GetImageInfo( const char *, int *pnWidth = NULL,
		                       int *pnHeight = NULL, int *pnPlanes = NULL,
		                       int *pnBitsPerPixel = NULL, int *pnNumColors = NULL );
	BOOL         Draw( CDC *, int x = -1, int y = -1 );
	BOOL         Draw( CDC *pDC, CRect rRect );
	BOOL         DrawInRect( CDC *pDC, CRect rRect );
	BOOL         SetPalette( CDC * );
	void         SetPaletteCreationType( int );
	int          GetPaletteCreationType( void );
	BOOL         IsLoaded( void );
	int          ExtensionIndex( const char * );
	BOOL         Crop( int, int, int, int );
	BOOL         Stretch( int, int );
	BOOL         Rotate( int );
	BOOL         Invert( void );
	BOOL         Reverse( void );
	BOOL         RotateIt( int );
	void         Rotate90( unsigned char *, unsigned char * );
	void         Rotate270( unsigned char *, unsigned char * );
	BOOL         ChangeFormat( int );
	int          GetPaletteBytes( void );
	HGLOBAL      GetDib( void );
	CPalette*    GetPalette( void );
	void         operator= (const CImageObject &ImageObject);
	void         NormalizeCoordinates( int *, int *, int *, int *, BOOL *bCompleteImage = NULL, BOOL *bLessThanHalf = NULL );
	void*        GetDIBPointer( int *nWidthBytes = NULL, int nNewBits = 0, int *nNewWidthBytes = NULL, int nNewWidth = -1 );
	LOGPALETTE*  GetLogPal( void );
	LOGPALETTE*  CreateLogPalette( RGBQUAD *Palette, int NumColors );
	int          GetNearestIndex( unsigned char, unsigned char, unsigned char, RGBQUAD *, int );
	void         SetQuality( int nQual ){ m_nQuality = nQual; }
	void         ProcessPalette( void );
	int          WidthBytes( int, int );
	void         SetDib( HGLOBAL hDib ){ m_hDib = hDib; }
	void         SetLogPal( LOGPALETTE *pLogPal ){ m_pLogPal = pLogPal; }
protected:
	void         InitVars( BOOL bFlag = FALSE );
	void         ProcessImageHeader( void );
	void         KillImage( void );
	void         CreatePaletteFromDIB( RGBQUAD *, int );
	LOGPALETTE*  CreatePaletteFromBitmap( int, unsigned char *, int, int, int );
	RGBQUAD*     MakePopularityPalette( int, unsigned char *, int, int, int );
	RGBQUAD*     MakeMedianCutPalette( int, unsigned char *, int, int, int );
	RGBQUAD*     MakeFixedPalette( int );
};
#endif