dibapi.h

vc编程实现的哈夫曼编码

/******************************************************************************** 
 *  DIBAPI.H
 * 
 *  Header file for Device-Independent Bitmap (DIB) API.  Provides 
 *  function prototypes and constants for DIB functions 
 ********************************************************************************/ 

#ifndef __DIBAPI_H_
#define __DIBAPI_H_
//////////////////////////////////////////////////////////

/* Handle to a DIB */ 
#define HDIB				HANDLE 

// Dib Header Marker - used in writing DIBs to files 
#define DIB_HEADER_MARKER	((WORD) ('M' << 8) | 'B') 

/* DIB constants */ 
#define PALVERSION			0x300 

/* DIB copy constants */ 
#define PW_WINDOW			1 
#define PW_CLIENT			2

/* DIB Macros*/ 
// WIDTHBYTES performs DWORD-aligning of DIB scanlines.  The "bits" 
// parameter is the bit count for the scanline (biWidth * biBitCount), 
// and this macro returns the number of DWORD-aligned bytes needed  
// to hold those bits. 
#define WIDTHBYTES(bits)    (((bits) + 31) / 32 * 4) 
#define IS_WIN30_DIB(lpbi)  ((*(LPDWORD)(lpbi)) == sizeof(BITMAPINFOHEADER)) 
#define RECTWIDTH(lpRect)   ((lpRect)->right - (lpRect)->left) 
#define RECTHEIGHT(lpRect)  ((lpRect)->bottom - (lpRect)->top) 
#define WaitCursorBegin()	HCURSOR hcURSOR = SetCursor(LoadCursor(NULL, IDC_WAIT))
#define WaitCursorEnd()		SetCursor(hcURSOR) 
 
/* function prototypes */ 
	// DIB initialization
HDIB CreateDIB(DWORD, DWORD, WORD); 
HDIB CreateDefaultDIB(DWORD dwWidth, DWORD dwHeight);
void DestroyDIB(HDIB); 
HDIB LoadDIB (LPTSTR); 
BOOL SaveDIB (HDIB, LPTSTR); 
HDIB ReadDIBFile(HANDLE); 
	// DIB attributes
DWORD BytesPerLine(LPBYTE lpDIB);
DWORD BytesPerLine(HDIB hDIB);
DWORD DIBlockSize(HDIB hDIB);
DWORD DIBlockSize(LPBYTE lpDIB);
DWORD DIBHeight (LPBYTE lpDIB); 
DWORD DIBHeight (HDIB hDIB); 
DWORD DIBWidth (LPBYTE lpDIB); 
DWORD DIBWidth (HDIB hDIB); 
WORD DIBNumColors (LPBYTE lpDIB); 
WORD DIBNumColors (HDIB hDIB); 
WORD DIBBitCount (LPBYTE lpDIB); 
WORD DIBBitCount (HDIB hDIB); 
LPBYTE FindDIBBits (LPBYTE lpDIB); 
WORD PaletteSize (LPBYTE lpDIB); 
WORD PaletteSize (HDIB hDIB); 
	// DIB display
BOOL PaintBitmap(HDC, LPRECT, HBITMAP, LPRECT, HPALETTE, DWORD);
BOOL PaintDIB(HDC, LPRECT, HDIB, LPRECT, HPALETTE, DWORD);
	// DIB operations
HBITMAP DIBToDIBSection(LPBYTE lpDIB);
HBITMAP DIBToDIBSection(HDIB hDIB);
HDIB DIBSectionToDIB(HBITMAP hBitmap);
HDIB ConvertDIBFormat(LPBYTE lpSrcDIB, UINT nWidth, UINT nHeight, UINT nbpp, BOOL bStretch, HPALETTE hPalSrc);
HDIB ConvertDIBFormat(HDIB hDIB, UINT nWidth, UINT nHeight, UINT nbpp, BOOL bStretch, HPALETTE hPalSrc);
HDIB ConvertDIBFormat(LPBYTE lpSrcDIB, UINT nbpp, HPALETTE hPalSrc);
HDIB ConvertDIBFormat(HDIB hDIB, UINT nbpp, HPALETTE hPalSrc);
HDIB BitmapToDIB (HBITMAP, HPALETTE); 
HDIB BitmapToDIB (HBITMAP, HPALETTE, WORD);
HDIB ChangeBitmapFormat (HBITMAP, WORD, DWORD, HPALETTE); 
HBITMAP DIBToBitmap (HDIB hDIB, HPALETTE hPal); 
HDIB ChangeDIBFormat (HDIB, WORD, DWORD); 
BOOL CopyColorTable( LPBITMAPINFO lpTarget, LPBITMAPINFO lpSource, HPALETTE hPalSrc );
	// DIB palette
HPALETTE CreateDIBPalette(LPBYTE lpDIB);
HPALETTE CreateDIBPalette(HDIB hDIB); 
BOOL DisplayPalette(HDC hDC, LPRECT lpRect, HPALETTE hPal);
HPALETTE CopyPalette(HPALETTE hPalSrc);
HPALETTE GetSystemPalette(void); 
int PalEntriesOnDevice (HDC hDC); 
HPALETTE CreateIdentifyPalette(HPALETTE hPalSrc);
BOOL MapDIBColorsToPalette(HDIB hDIB, HPALETTE hPalette);
	// DIB capture
HBITMAP CopyScreenToBitmap (LPRECT); 
HBITMAP CopyWindowToBitmap (HWND, WORD); 
HBITMAP CopyClientRectToBitmap(HWND hWnd, LPRECT lpRect);
HDIB CopyScreenToDIB (LPRECT); 
HDIB CopyWindowToDIB (HWND, WORD); 
HDIB CopyClientRectToDIB(HWND hWnd, LPRECT lpRect); 
	// Color quantization
HPALETTE CreateOctreePalette(HDIB hDIB, UINT nMaxColors, UINT nColorBits);
HPALETTE CreateOctreePalette(LPBYTE lpDIB, UINT nMaxColors, UINT nColorBits);
HANDLE CopyHandle(HANDLE h);

//////////////////////////////////////////////////////////
#endif	//__DIBAPI_H_