FramerateCounter.h

/******************************************************************************
 * Copyright (c) 2012-2017 All Rights Reserved, http://www.evocortex.com      *
 *  Evocortex GmbH                                                            *
 *  Emilienstr. 1                                                             *
 *  90489 Nuremberg                                                           *
 *  Germany                                                                   *
 *                                                                            *
 * Contributors:                                                              *
 *  Initial version for Linux 64-Bit platform supported by Fraunhofer IPA,    *
 *  http://www.ipa.fraunhofer.de                                              *
 *****************************************************************************/
 
#ifndef FRAMERATECOUNTER_H_
#define FRAMERATECOUNTER_H_
 
#include <iostream>
#include <list>
#include "irdirectsdk_defs.h"
 
namespace evo
{
 
struct LinkedElement;
 
class Timer;
 
class __IRDIRECTSDK_API__ FramerateCounter
{
public:
  FramerateCounter(double interval=1000.0, unsigned int smoothSize=30);
 
  virtual ~FramerateCounter();
 
  bool trigger(double* fps=NULL);
 
  double getFps();
 
private:
 
  Timer*                _tElapsed;
 
  Timer*                _tPrint;
 
  double                _fps;
 
  double                _interval;
 
  struct LinkedElement* _oldest;
 
  struct LinkedElement* _newest;
 
};
 
}
 
#endif /* FRAMERATECOUNTER_H_ */