#include "opencv/highgui.h"
#include "opencv/cv.h"
using namespace std;
using namespace cv;

int main(int argc, char** argv){
  cvNamedWindow("testcamera", CV_WINDOW_AUTOSIZE);
  CvCapture* capture;
  if (argc == 1){
    capture=cvCaptureFromCAM(0);
    printf("capture 0\n");
  }
  else {
    capture = cvCreateFileCapture(argv[1]);
    printf("capture argv1\n");
  }
  assert(capture != NULL);
  IplImage* frame;
  frame = cvCreateImage(cvSize(640, 320), IPL_DEPTH_16U, 3);
  while(1){
    frame = cvQueryFrame(capture);
    if (!frame)
      break;
    cvShowImage("testcamera", frame);
    char c=cvWaitKey(33);
    if (c==27)
      break;
  }
  cvReleaseCapture(&capture);
  cvDestroyWindow("testcamera");
  return 0;
}