OpenCV 2.1 Camera Test

/*
    Compile with opencv 2.1 April 2010 Release

    Assuming you have the libraries installed centrally, e.g. prefix /usr thus /usr/include and /usr/lib
    you can compile with:

    gcc -g -std=c99 -lopencv_highgui -lopencv_core -lopencv_imgproc -lopencv_features2d main.c -o CamTest

    I recommend -g so you can use gdb with something like gdb ./CamTest and then inside gdb:

    b 7
    run
 */

#include <stdio.h>
#include <opencv/cv.h>
#include <opencv/highgui.h>

int main(int argc, char **argv)
{
    IplImage *l_ipiCapture;
    CvCapture *l_cvcCamera;


    l_cvcCamera = cvCreateCameraCapture(CV_CAP_ANY);
    if(!l_cvcCamera)
    {
        printf("Unable to capture camera.");
        exit(1);
    }

    while(1)
    {
        cvNamedWindow("Cam Test",CV_WINDOW_AUTOSIZE);

        l_ipiCapture = cvQueryFrame(l_cvcCamera);

        cvShowImage("Cam Test",l_ipiCapture);

        if( (cvWaitKey(10) & 255) == 27 ) break;
    }

    cvReleaseImage(&l_ipiCapture);
    cvReleaseCapture(&l_cvcCamera);

    cvDestroyWindow("Cam Test");

    exit(0);
}