text: 
  // QT includes
  #include <QTimer>
  
  // Hyperion-Dispmanx includes
  #include <grabber/FramebufferFrameGrabber.h>
  
  class FramebufferWrapper : public QObject
  {
  	Q_OBJECT
  public:
  	FramebufferWrapper(const std::string & device, const unsigned grabWidth, const unsigned grabHeight, const unsigned updateRate_Hz);
  
  	const Image<ColorRgb> & getScreenshot();
  
  	///
  	/// Starts the timed capturing of screenshots
  	///
  	void start();
  
  	void stop();
  
  signals:
  	void sig_screenshot(const Image<ColorRgb> & screenshot);
  
  private slots:
  	///
  	/// Performs a single screenshot capture and publishes the capture screenshot on the screenshot signal.
  	///
  	void capture();
  
  private:
  	/// The QT timer to generate capture-publish events
  	QTimer _timer;
  
  	/// The grabber for creating screenshots
  	FramebufferFrameGrabber   _grabber;
  
  	// image buffers
  	Image<ColorRgb>  _screenshot;
  
  };
  