arithmcode.h

A high quality VC++ source code implementing the very important context-based adaptive arithmetic co

#pragma once
#include "afx.h"
#include "TempFile.h"

typedef struct{
	unsigned int scale;
	unsigned int lowRange;
	unsigned int highRange;
}SYMBOL; 

class CArithmCode :
	public CObject
{
public:
	CArithmCode(void);
	~CArithmCode(void);
	CTempFile * memFile;
	HANDLE hTable[128];
	unsigned int * Table[128];
	SYMBOL symbol;
	int numSymbol;
	int numContext;	
	unsigned short low;
	unsigned short high;
	unsigned int range;
	int underflowBits;
	unsigned short code;
	unsigned int count;
	unsigned char mask;
	unsigned short rack;
	void OutputBit(short bit);
	void OutputBits(unsigned long code1, short count1);
	void InitializeEncode(void);
	void convert_int_to_symbol(short cxt, short i);
	void EncodeSymbol(void);
	void UpdateModel(short cxt, short i);
	void AdaptiveEncode(short cxt, short i);
	short InputBit(void);
	void GetScale(short cxt);
	void InitializeDecode(void);
	void GetCount(void);
	short convert_symbol_to_int(short cxt);
	void RemoveSymbol(void);
	short AdaptiveDecode(short cxt);
	void Flush(void);
	void Clear(void);
};