FramerateCounter.h

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// Copyright (c) 2025 Optris GmbH Co. KG

 
#pragma once
 
#include <memory>
 
#include "otcsdk/Api.h"
 
 
namespace optris
{
 
// Forward declarations
class Timer;
struct LinkedElement;
 

class FramerateCounter
{
public:
  static constexpr double DEFAULT_INTERVAL = 1000.;
  static constexpr unsigned int DEFAULT_SMOOTH_SIZE = 30;
 

  OTC_SDK_API FramerateCounter(double interval = DEFAULT_INTERVAL, unsigned int smoothSize = DEFAULT_SMOOTH_SIZE);

  OTC_SDK_API FramerateCounter(const FramerateCounter&) = delete;
  OTC_SDK_API FramerateCounter& operator=(const FramerateCounter&) = delete;

  OTC_SDK_API FramerateCounter(FramerateCounter&&) = delete;
  OTC_SDK_API FramerateCounter& operator=(FramerateCounter&&) = delete;

  OTC_SDK_API virtual ~FramerateCounter();
 

  OTC_SDK_API bool trigger();

  double getFps() const noexcept;
 
 
private:
  std::unique_ptr<Timer> _tElapsed;
  std::unique_ptr<Timer> _tPrint;
 
  double _fps;
  double _interval;
 
  struct LinkedElement* _oldest;
  struct LinkedElement* _newest;
};
 
 
// Inline implementation
inline double FramerateCounter::getFps() const noexcept
{
  return _fps;
}
 
} // namespace optris