/* 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 KYRA_WSAMOVIE_H
#define KYRA_WSAMOVIE_H

#include "kyra/kyra_v1.h"

namespace Kyra {

class Palette;

class Movie {
public:
	Movie(KyraEngine_v1 *vm) : _vm(vm), _screen(vm->screen()), _opened(false),  _x(-1), _y(-1), _drawPage(-1) {}
	virtual ~Movie() {}

	virtual bool opened() { return _opened; }

	virtual int xAdd() const { return 0; }
	virtual int yAdd() const { return 0; }

	virtual int width() const = 0;
	virtual int height() const = 0;

	virtual int open(const char *filename, int offscreen, Palette *palette) = 0;
	virtual void close() = 0;

	virtual int frames() = 0;

	virtual void displayFrame(int frameNum, int pageNum, int x, int y, uint16 flags, const uint8 *table1, const uint8 *table2) = 0;

protected:
	KyraEngine_v1 *_vm;
	Screen *_screen;
	bool _opened;

	int _x, _y;
	int _drawPage;
};

class WSAMovie_v1 : public Movie {
public:
	WSAMovie_v1(KyraEngine_v1 *vm);
	~WSAMovie_v1() override;

	int width() const override { return _width; }
	int height() const override { return _height; }

	int open(const char *filename, int offscreen, Palette *palette) override;
	void close() override;

	int frames() override { return _opened ? _numFrames : -1; }

	void displayFrame(int frameNum, int pageNum, int x, int y, uint16 flags, const uint8 *table1, const uint8 *table2) override;

	enum WSAFlags {
		WF_OFFSCREEN_DECODE = 0x10,
		WF_NO_LAST_FRAME = 0x20,
		WF_NO_FIRST_FRAME = 0x40,
		WF_FLIPPED = 0x80,
		WF_HAS_PALETTE = 0x100,
		WF_XOR = 0x200
	};

protected:
	virtual void processFrame(int frameNum, uint8 *dst);

	uint16 _currentFrame;
	uint16 _numFrames;
	uint16 _width;
	uint16 _height;
	uint16 _flags;
	uint8 *_deltaBuffer;
	uint32 _deltaBufferSize;
	uint8 *_offscreenBuffer;
	uint32 *_frameOffsTable;
	uint8 *_frameData;
};

class WSAMovieAmiga : public WSAMovie_v1 {
public:
	WSAMovieAmiga(KyraEngine_v1 *vm);
	int open(const char *filename, int offscreen, Palette *palette) override;
	void close() override;

	void displayFrame(int frameNum, int pageNum, int x, int y, uint16 flags, const uint8 *table1, const uint8 *table2) override;
private:
	void processFrame(int frameNum, uint8 *dst) override;

	uint8 *_buffer;
};

class WSAMovie_v2 : public WSAMovie_v1 {
public:
	WSAMovie_v2(KyraEngine_v1 *vm);

	int open(const char *filename, int unk1, Palette *palette) override;
	void displayFrame(int frameNum, int pageNum, int x, int y, uint16 flags, const uint8 *table1, const uint8 *table2) override {
		WSAMovie_v1::displayFrame(frameNum, pageNum, x + _xAdd, y + _yAdd, flags, table1, table2);
	}

	int xAdd() const override { return _xAdd; }
	int yAdd() const override { return _yAdd; }

	void setWidth(int w) { _width = w; }
	void setHeight(int h) { _height = h; }
protected:
	int16 _xAdd;
	int16 _yAdd;
};

} // End of namespace Kyra

#endif