codec37.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef SCUMM_SMUSH_CODEC37_H
#define SCUMM_SMUSH_CODEC37_H

#include "common/scummsys.h"

namespace Scumm {

class SmushDeltaBlocksDecoder {
private:

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

public:
    SmushDeltaBlocksDecoder(int width, int height);
    ~SmushDeltaBlocksDecoder();
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