/* 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 GRIM_BLOCKY16_H
#define GRIM_BLOCKY16_H

#include "common/scummsys.h"

namespace Grim {

class Blocky16 {
private:

	byte *_deltaBufs[2];
	byte *_deltaBuf;
	byte *_curBuf;
	int32 _prevSeqNb;
	int _lastTableWidth;
	const byte *_d_src, *_paramPtr, *_param6_7Ptr;
	int _d_pitch;
	int32 _offset1, _offset2;
	byte *_tableBig;
	byte *_tableSmall;
	int16 _table[256];
	int32 _frameSize;
	int _offset;
	int _width, _height;
	int _blocksWidth, _blocksHeight;

	void makeTablesInterpolation(int param);
	void makeTables47(int width);
	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, const byte *param6_7_ptr);

public:
	Blocky16();
	~Blocky16();
	void init(int width, int height);
	void deinit();
	void decode(byte *dst, const byte *src);
};

} // end of namespace Grim

#endif