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/*
* Encodage & décodage arithmétique
*/
#ifndef ARITH_H
#define ARITH_H
#include "utypes.h"
#include <stdio.h>
class ppm_expander;
class PPM_ReadBuf
{
FILE *my_file_in;
ppm_expander* parent;
public:
PPM_ReadBuf(FILE* f, ppm_expander* _parent) : my_file_in(f), parent(_parent) {}
UINT readbuf(UCHAR *buf,UINT len);
};
class ArithClass
{
UCHAR *ainbuf;
UCHAR *apinbuf,*aendinbuf;
UINT ainbufsize;
USHORT avalue,alow,ahigh;
PPM_ReadBuf* areadbuf;
UCHAR abitcnt;
USHORT abitbuf;
public:
void Arith_DecodeInit(PPM_ReadBuf* readbuf,UCHAR *buf,UINT bufsize);
UINT Arith_DecodeVal(UINT size);
void Arith_Decode(UINT min,UINT max,UINT size);
void Arith_DecodeEnd(void);
};
#endif
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