#include "opencv2/opencv.hpp"
#include "opencv2/videoio.hpp"
#include "opencv2/highgui.hpp"

const int FPS = 15;

int main() {
  cv::VideoCapture cap;
  cap.open(0);

  if (!cap.isOpened()) {
    std::cerr << "[ERROR] Unable to open camera!" << std::endl;
    return -2;
  }

  while (true) {
    // create a matrix to store the image from the cam
    cv::Mat frame;
    // wait for a new frame from camera and store it into 'frame'
    cap.read(frame);
    // check if we succeeded
    if (frame.empty()) {
      std::cerr << "[ERROR] blank frame grabbed" << std::endl;
      break;
    }
    cv::imshow("Color", frame);
    if (cv::waitKey(1000.0 / FPS) >= 0)
      break;
  }

  return 0;
}