dlghuffman.h

是一种采用哈夫曼算法的图像压缩算法

#if !defined(AFX_DLGHUFFMAN_H__DD963955_0C2E_4E53_A64B_06680CA34E2E__INCLUDED_)
#define AFX_DLGHUFFMAN_H__DD963955_0C2E_4E53_A64B_06680CA34E2E__INCLUDED_


#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// DlgHuffman.h : header file
//
#define HUF_HEADER_MARKER ((WORD)('H'<<8) | 'F')
/////////////////////////////////////////////////////////////////////////////
// CDlgHuffman dialog
typedef struct
{ WORD wManufacturer;
  WORD bVersion;
  WORD wHeight;
  WORD wWidth;
  WORD wSize;
  WORD wItemNum;
  WORD wReserved;
}HUFHEADER;

typedef struct
{ 
  WORD GrayValue;
  short unsigned int parent,lchild,rchild;
}HUFCODEBOOK;

typedef struct
{ float freq;
  BYTE GrayValue;
  short unsigned int parent,lchild,rchild;
}HuffmanTree;

class CDlgHuffman : public CDialog
{
// Construction
public:
	unsigned int m_iColorNum;
	HuffmanTree *m_fFreq;
	LPSTR m_lpDIB;
	LPSTR m_lpDIBBits;
    long m_lLineBytes;
	unsigned int m_height;    //图象的高度
	unsigned int  m_width;     //图象的宽度
	CString *m_strCode;
	CDlgHuffman(CWnd* pParent = NULL);   // standard constructor

// Dialog Data
	//{{AFX_DATA(CDlgHuffman)
	enum { IDD = IDD_DLG_Huffman };
	CListCtrl m_lstTable;
	double m_dEntropy;
	double m_dAvgCodeLen;
	double m_dEfficiency;
		// NOTE: the ClassWizard will add data members here
	//}}AFX_DATA


// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CDlgHuffman)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:

	// Generated message map functions
	//{{AFX_MSG(CDlgHuffman)
    virtual BOOL OnInitDialog();
		// NOTE: the ClassWizard will add member functions here
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_DLGHUFFMAN_H__DD963955_0C2E_4E53_A64B_06680CA34E2E__INCLUDED_)