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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001/2002 The ScummVM project
*
* 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef CODEC_47_H
#define CODEC_47_H
#include "config.h"
#include "decoder.h"
class Codec47Decoder : public Decoder {
private:
int32 _deltaSize;
byte * _deltaBufs[2];
byte * _deltaBuf;
byte * _curBuf;
int32 _prevSeqNb;
int32 _lastTableWidth;
byte * _d_src, * _paramPtr;
int32 _d_pitch;
int32 _offset1, _offset2;
byte _tableBig[99328];
byte _tableSmall[32768];
int16 _table[256];
void makeTables47(int32 width);
void makeTables37(int32 param);
void bompDecode(byte *dst, byte *src, int32 len);
void level1(byte * d_dst);
void level2(byte * d_dst);
void level3(byte * d_dst);
void decode2(byte * dst, byte * src, int32 width, int32 height, byte * param_ptr);
public:
Codec47Decoder();
virtual ~Codec47Decoder();
bool initSize(const Point &, const Rect &);
void clean();
bool decode(Blitter &, Chunk &);
};
#endif
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