mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-15 22:28:10 +00:00
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/* 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 GFX_FRAMELIMITER_H
|
|
#define GFX_FRAMELIMITER_H
|
|
|
|
#include "common/system.h"
|
|
|
|
namespace Graphics {
|
|
|
|
/**
|
|
* A framerate limiter
|
|
*
|
|
* Ensures the framerate does not exceed the specified value
|
|
* by delaying until all of the timeslot allocated to the frame
|
|
* is consumed.
|
|
* Allows to curb CPU usage and have a stable framerate.
|
|
*/
|
|
class FrameLimiter {
|
|
public:
|
|
FrameLimiter(OSystem *system, const uint framerate);
|
|
|
|
void startFrame();
|
|
void delayBeforeSwap();
|
|
|
|
void pause(bool pause);
|
|
|
|
uint getLastFrameDuration() const;
|
|
private:
|
|
OSystem *_system;
|
|
|
|
bool _enabled;
|
|
uint _speedLimitMs;
|
|
uint _startFrameTime;
|
|
uint _lastFrameDurationMs;
|
|
};
|
|
|
|
} // End of namespace Graphics
|
|
|
|
#endif // GFX_FRAMELIMITER_H
|