Glide Plugin GLES2 port from mupen64plus-ae, but with special FrameSkip code

[mupen64plus-pandora.git] / source / gles2glide64 / src / Glide64 / FrameSkipper.h

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *   Copyright (C) 2011 yongzh (freeman.yong@gmail.com)                    *
 *                                                                         *
 *   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.          *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifndef FRAME_SKIPPER_H
#define FRAME_SKIPPER_H

class FrameSkipper {
public:
	enum { AUTO, MANUAL };

	FrameSkipper();

	void setSkips(int type, int max) {
		skipType = type;
		maxSkips = max;
	}

	void setTargetFPS(int fps) {
		targetFPS = fps;
	}
	bool willSkipNext() {
		return (skipCounter > 0);
	}
	
#if 0
	bool hasSkipped();
#else
	bool hasSkipped() {
		return (oldSkip > 0);
	}
	void newFrame();
#endif
	void start();
	void update();

private:
	int skipType;
	int	oldSkip;
	int maxSkips;
	int targetFPS;
	int skipCounter;
	int	countVI;
	unsigned int initialTicks;
	unsigned int virtualCount;
};

#endif