www.pudn.com > ac-win32.zip > ArithmeticCoderC.h

#ifndef __ARITHMETICCODERC_H__ 
#define __ARITHMETICCODERC_H__ 
 
#include  
using namespace std; 
 
class ArithmeticCoderC   
{ 
public: 
	ArithmeticCoderC(); 
 
	void SetFile( fstream *file ); 
 
	void Encode( const unsigned int low_count,  
	             const unsigned int high_count,  
	             const unsigned int total ); 
	void EncodeFinish(); 
 
	void DecodeStart(); 
	unsigned int DecodeTarget( const unsigned int total ); 
	void Decode( const unsigned int low_count,  
	             const unsigned int high_count ); 
 
protected: 
	// bit operations 
	void SetBit( const unsigned char bit ); 
	void SetBitFlush(); 
	unsigned char GetBit(); 
 
	unsigned char mBitBuffer; 
	unsigned char mBitCount; 
 
	// in-/output stream 
	fstream *mFile; 
 
	// encoder & decoder 
	unsigned int mLow; 
	unsigned int mHigh; 
	unsigned int mStep; 
	unsigned int mScale; 
 
	// decoder 
	unsigned int mBuffer; 
}; 
 
#endif