Capture.hpp

/* $Id: $ */

#ifndef JAFAR_IMAGE_CAPTURE_HPP
#define JAFAR_IMAGE_CAPTURE_HPP

#include <opencv2/highgui/highgui.hpp> // opencv

#include "image/Image.hpp"

namespace jafar { 
  namespace image {

    class Capture {
      
    public:
    
      Capture(int index = CV_CAP_ANY) : m_cvCapture(0), m_image(0) {
  setCamera(index);
      }

      ~Capture() {
  if (m_cvCapture) cvReleaseCapture(&(m_cvCapture));
      }

      void setCamera(int index = CV_CAP_ANY) {
  release();
  m_cvCapture = cvCreateCameraCapture(CV_CAP_ANY);
  if (m_cvCapture)
    m_image = new Image(cvQueryFrame(m_cvCapture));
  else
    JFR_WARNING("Error during initialisation: check the camera and device index.");
      }

      jafar::image::Image* image() {return m_image;}

      void grabFrame() {
  cvQueryFrame(m_cvCapture);
      }

      void release() {
  if (m_cvCapture) {
    cvReleaseCapture(&(m_cvCapture));
    m_cvCapture = 0;
  }      
      }

    private:

      CvCapture* m_cvCapture;
      jafar::image::Image* m_image;

    };

  }
}

#endif // JAFAR_IMAGE_CAPTURE_HPP