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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2003 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 SMUSH_CODEC_47_H
#define SMUSH_CODEC_47_H
#include "common/scummsys.h"
class Codec47Decoder {
private:
int32 _deltaSize;
byte *_deltaBufs[2];
byte *_deltaBuf;
byte *_curBuf;
int32 _prevSeqNb;
int _lastTableWidth;
const byte *_d_src, *_paramPtr;
int _d_pitch;
int32 _offset1, _offset2;
byte _tableBig[99328];
byte _tableSmall[32768];
int16 _table[256];
int32 _frameSize;
int _width, _height;
void makeTables47(int32 width);
void makeTables37(int32 param);
void bompDecode(byte *dst, const byte *src, int len);
void level1(byte *d_dst);
void level2(byte *d_dst);
void level3(byte *d_dst);
void decode2(byte *dst, const byte *src, int width, int height, const byte *param_ptr);
public:
Codec47Decoder();
~Codec47Decoder();
void init(int width, int height);
void deinit();
bool decode(byte *dst, const byte *src);
};
#endif
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