#if !defined lpaq6_h_included

#define lpaq6_h_included

#pragma warning(disable:4554)

#define WIKI

#include <stdio.h>

// 8, 16, 32 bit unsigned types (adjust as appropriate)

typedef unsigned char U8;

typedef unsigned short U16;

typedef unsigned int U32;

template <int B>

class HashTable {

U8* t; // table: 1 element = B bytes: checksum,priority,data,data,...

const int NB; // size in bytes

public:

HashTable(int n);

U8* get(U32 i);

#ifdef WIKI

U8* get0(U32 i);

U8* get1(U32 i);

#endif

};

#define COMPRESS 1

#define DECOMPRESS 2

class Predictor;

class MatchModel;

class Encoder {

public:

#ifdef WIKI

HashTable<16> t4a; // cxt -> state

HashTable<16> t4b; // cxt -> state

#define t1a t4a

#define t2a t4a

#define t3a t4a

#define t1b t4b

#define t2b t4b

#define t3b t4b

#else

HashTable<16> t1; // cxt -> state

HashTable<16> t2; // cxt -> state

HashTable<16> t3; // cxt -> state

#define t1a t1

#define t2a t2

#define t3a t3

#define t1b t1

#define t2b t2

#define t3b t3

#endif

MatchModel* mm; // predicts next bit by matching context

FILE *archive; // Compressed data file

U32 x1, x2; // Range, initially [0, 1), scaled by 2^32

U32 x; // Decompress mode: last 4 input bytes of archive

U32 p;

int *add2order;

U32 Predictor_upd(int y);

Encoder(int m, FILE* f);

~Encoder();

void flush(); // call this when compression is finished

void compress(int c);

int decompress();

};

void set_PAQ_level(int level);

#endif