int main( int argc, char** argv ) {
// CAPTURE VIDEO
CvCapture* capture;
capture = cvCreateFileCapture("trafficDay.avi");
if( capture == NULL ) {
fprintf (stderr, "cannot open file\n");
exit(1);
}
// ALLOCATE SPACE FOR IplImage STRUCTURES.
// DEFAULT ONE FROM VIDEO.
IplImage *big_frame = cvQueryFrame(capture);
IplImage *frame = cvCreateImage (cvSize(DEFAULT_SIZE(0), DEFAULT_SIZE(1)), big_frame->depth, big_frame->nChannels);
IplImage *last_frame = cvCreateImage (cvSize(DEFAULT_SIZE(0), DEFAULT_SIZE(1)), big_frame->depth, big_frame->nChannels);
IplImage *diff = cvCreateImage (cvSize(DEFAULT_SIZE(0), DEFAULT_SIZE(1)), big_frame->depth, big_frame->nChannels);
cvResize (big_frame, last_frame, CV_INTER_LINEAR );
// CREATE WINDOWS AND LOCATE THEM TO TOP LEFT OF THE SCREEN
cvNamedWindow( "Video", CV_WINDOW_AUTOSIZE);
cvNamedWindow( "Difference", CV_WINDOW_AUTOSIZE);
cvMoveWindow ("Video", 100, 0);
cvMoveWindow ("Difference", 100, 500);
// MAIN LOOP
while((big_frame = cvQueryFrame (capture)) != NULL) {
// RESIZE IMAGE FROM VIDEO
cvResize (big_frame, frame, CV_INTER_LINEAR );
// SHOW CAPTURED AND RESIZED IMAGE
cvShowImage("Video", frame);
// COMPUTE AND SWOW DIFFERENCE
cvSub (frame, last_frame, diff, NULL);
cvShowImage("Difference", diff);
// WAIT FOR BREAK AND TO ADJUST FPS
char c = cvWaitKey(50);
if(c == 27) break;
// UPDATE LAST FRAME
cvCopy (frame, last_frame, NULL);
}
//RELEASE IMAGE STRUCTURES
cvReleaseImage (&last_frame);
cvReleaseImage (&frame);
cvReleaseImage (&diff);
// RELEASE CAPTURE
cvReleaseCapture(&capture);
// DESTROY WINDOWS
cvDestroyWindow("Video");
cvDestroyWindow("Difference");
return 0;
}
void *ocl_setParameterValue (struct ld_kernel_s *ldKernel,
struct ld_kern_param_s *ldParam,
void *buffer, size_t size)
{
cl_mem mem_obj = (void *) -1;
cl_int errcode_ret;
if (ldParam->is_pointer) {
DEFAULT_SIZE(size)
mem_obj = real_clCreateBuffer(ldOclEnv.context, CL_MEM_READ_WRITE, size, NULL, clck_(&errcode_ret));
clCheck(real_clEnqueueWriteBuffer(ldOclEnv.command_queue,
(cl_mem) mem_obj,
CL_TRUE,
0, size, buffer,
0, NULL, NULL));
buffer = &mem_obj;
size = sizeof(cl_mem);
}
if (size == 0 && strstr(ldParam->name, "_tex")) {
cl_image_format format = {CL_R, CL_UNSIGNED_INT32};
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
mem_obj = clCreateImage2D (ldOclEnv.context, CL_MEM_READ_ONLY, &format, 100, 1, 0, &format, clck_(&errcode_ret));
#pragma GCC diagnostic pop
buffer = &mem_obj;
size = sizeof(cl_mem);
}
clCheck(real_clSetKernelArg ((cl_kernel) ldKernel->handle, ldParam->index,
size, buffer));
return mem_obj;
}
