seq.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 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.
 *
 * $URL$
 * $Id$
 *
 */

#ifndef EXPRESS_SEQ_H
#define EXPRESS_SEQ_H

#include "common/stream.h"
#include "graphics/surface.h"

namespace Express {

struct FrameInfo {
	void read(Common::SeekableReadStream *in, uint16 decompOffset);

	uint32 dataOffset;
	uint32 palOffset;
	uint32 xPos1;
	uint32 yPos1;
	uint32 xPos2;
	uint32 yPos2;
	uint32 initialSkip;
	uint32 decompSize;

	byte compType;
};

class AnimFrame {
public:
	AnimFrame(Common::SeekableReadStream *in, FrameInfo *f);
	~AnimFrame();
	void paint(Graphics::Surface *s);

private:
	void decomp3(Common::SeekableReadStream *in, FrameInfo *f);
	void decomp4(Common::SeekableReadStream *in, FrameInfo *f);
	void decomp34(Common::SeekableReadStream *in, FrameInfo *f, byte mask, byte shift);
	void decomp5(Common::SeekableReadStream *in, FrameInfo *f);
	void decomp7(Common::SeekableReadStream *in, FrameInfo *f);
	void decompFF(Common::SeekableReadStream *in, FrameInfo *f);
	void readPalette(Common::SeekableReadStream *in, FrameInfo *f);

	Graphics::Surface _image;
	uint16 _palSize;
	uint16 *_palette;
};

class Seq {
public:
	Seq(Common::SeekableReadStream *in);
	~Seq();

private:
	bool load(Common::SeekableReadStream *in);
	AnimFrame *decodeFrame(Common::SeekableReadStream *in, uint32 numFrame);

	Common::Array<FrameInfo> _frames;
};

} // End of Express namespace

#endif // EXPRESS_SEQ_H