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// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#ifndef _DisplayEngine_H_
#define _DisplayEngine_H_
#include "../api.h"
#include "DisplayParams.h"
#include "../graphics/Pixel32.h"
#include "../graphics/Bitmap.h"
#include "../base/Rect.h"
#include <boost/shared_ptr.hpp>
#include <string>
namespace avg {
class Region;
class AVG_API DisplayEngine
{
public:
DisplayEngine();
virtual ~DisplayEngine();
virtual void teardown() = 0;
void initRender();
void deinitRender();
void setFramerate(float rate);
float getFramerate();
float getEffectiveFramerate();
void setVBlankRate(int rate);
bool wasFrameLate();
virtual void setGamma(float Red, float Green, float Blue) = 0;
virtual void setMousePos(const IntPoint& pos) = 0;
virtual int getKeyModifierState() const = 0;
void frameWait();
virtual void swapBuffers() = 0;
void checkJitter();
long long getDisplayTime();
virtual IntPoint getSize() = 0;
virtual void showCursor(bool bShow) = 0;
virtual BitmapPtr screenshot(int buffer=0) = 0;
protected:
private:
int m_NumFrames;
int m_FramesTooLate;
long long m_StartTime;
long long m_TimeSpentWaiting;
// Per-Frame timings.
long long m_LastFrameTime;
long long m_FrameWaitStartTime;
long long m_TargetTime;
int m_VBRate;
float m_Framerate;
bool m_bInitialized;
bool m_bFrameLate;
float m_EffFramerate;
};
typedef boost::shared_ptr<DisplayEngine> DisplayEnginePtr;
}
#endif //_DisplayEngine_H_
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