//
// Example showing how to connect to a webcam and capture
// video frames
// you may need to chanve the openCV library paths to suit your setup.

#include </usr/include/opencv/cv.h>
#include </usr/include/opencv/highgui.h>
#include </usr/include/opencv/cxcore.h>
#include "stdio.h"
#include "string.h" int main(int argc, char ** argv)
{
CvCapture * pCapture = 0;
IplImage * pVideoFrame = 0;
int i;
char filename[50]; //returns the number of available cameras in the system
// int ncams = cvcamGetCamerasCount( );
// fprintf(stderr, "Number of cameras: %d\n", ncams); // Initialize video capture
// pCapture = cvCaptureFromCAM( CV_CAP_ANY );
pCapture = cvCaptureFromCAM( -1 );
if( !pCapture )
{
fprintf(stderr, "failed to initialize video capture\n");
return -1;
} // Capture three video frames and write them as files
for(i=0; i<3; i++)
{
pVideoFrame = cvQueryFrame( pCapture );
if( !pVideoFrame )
{
fprintf(stderr, "failed to get a video frame\n");
} // Write the captured video frame as an image file
sprintf(filename, "VideoFrame%d.jpg", i+1);
if( !cvSaveImage(filename, pVideoFrame) )
{
fprintf(stderr, "failed to write image file %s\n", filename);
} // IMPORTANT: Don't release or modify the image returned
// from cvQueryFrame() !
} // Terminate video capture and free capture resources
cvReleaseCapture( &pCapture ); return 0;
}