/* 
 *  PSX-Tools Bundle Pack 
 *  Copyright (C) 2002 Nicolas "Pixel" Noble 
 *  
 *  This program is free software; you can redistribute it and/or modify 
 *  it under the terms of the GNU General Public License as published by 
 *  the Free Software Foundation; either version 2 of the License, or 
 *  (at your option) any later version. 
 * 
 *  This program is distributed in the hope that it will be useful, 
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 *  GNU General Public License for more details. 
 * 
 *  You should have received a copy of the GNU General Public License 
 *  aint with this program; if not, write to the Free Software 
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 */

#ifndef __LZSS_H__
#define __LZSS_H__

#include <stdio.h>
#include "generic.h"
#include "Handle.h"

#define LZSS_VERSION String("3.0.0-pre1")
#define LZSS_NAME String("lzss")

class lzss : public Base {
  public:
      lzss();
    typedef struct {
	char * name;
	int one_is_compressed, bitmap_inversed, one_jump, overlap_trick, negative_trick, sixteen_bits, ptrb, filling;
	int window_start;
	int l_mask_1, l_shft_1, l_mask_2, l_shft_2;
	int j_mask_1, j_shft_1, j_mask_2, j_shft_2;
	int f_mask_1, f_shft_1, f_mask_2, f_shft_2;
	int v_mask_1, v_shft_1, v_mask_2, v_shft_2;
    } scheme_t;

    enum {
	XENO = 0,
	DBZ,
	FF7,
	LM,
	MM,
	OB,
	LODOSS,
	FF6,
	VP_1,
	VP_2,
	TOD,
	END
    };

    static const scheme_t schemes[];
    int tolerate, blockb;
    int blk, bitmap_count;

    unsigned int lzss_decomp(Handle * f_source, Handle * f_cible, int true_length = -1);
    void lzss_comp(Handle * f_source, Handle * f_cible, int * delta = NULL);

    Byte swap_bits(Byte);
    
    void change_scheme(scheme_t);
    scheme_t get_scheme();

  private:
    scheme_t scheme;
    int lzss_maxsize, lzss_maxptr;
    
    unsigned int shift(unsigned int, int);
    void compute_limits(void);
    unsigned char lzss_rd(unsigned char *, int);
    int lzss_comp_strstr(unsigned char *, unsigned char *, int *, int);
    unsigned char * lzss_memcomp(unsigned char *, int *, int *);
};

#endif