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codec37.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2002-2005 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/scumm/smush/codec37.h,v 1.16.2.1 2005/10/18 02:11:25 sev Exp $
 *
 */

#ifndef SMUSH_CODEC37_H
#define SMUSH_CODEC37_H

#include "common/scummsys.h"

namespace Scumm {

class Codec37Decoder {
private:

      int32 _deltaSize;
      byte *_deltaBufs[2];
      byte *_deltaBuf;
      int16 *_offsetTable;
      int _curtable;
      uint16 _prevSeqNb;
      int _tableLastPitch;
      int _tableLastIndex;
      int32 _frameSize;
      int _width, _height;

public:
      Codec37Decoder();
      ~Codec37Decoder();
      void init(int width, int height);
      void deinit();
protected:
      void maketable(int, int);
      void proc1(byte *dst, const byte *src, int32, int, int, int, int16 *);
      void proc3WithFDFE(byte *dst, const byte *src, int32, int, int, int, int16 *);
      void proc3WithoutFDFE(byte *dst, const byte *src, int32, int, int, int, int16 *);
      void proc4WithFDFE(byte *dst, const byte *src, int32, int, int, int, int16 *);
      void proc4WithoutFDFE(byte *dst, const byte *src, int32, int, int, int, int16 *);
public:
      void decode(byte *dst, const byte *src);
};

} // End of namespace Scumm

#endif

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