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#define __USE_BSD
#include <unistd.h>
#undef __USE_BSD
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
#include "uca.h"
static __suseconds_t time_diff(struct timeval *start, struct timeval *stop)
{
return (stop->tv_sec - start->tv_sec)*1000000 + (stop->tv_usec - start->tv_usec);
}
void grab_callback_raw(uint32_t image_number, void *buffer, void *meta_data, void *user)
{
uint32_t *count = (uint32_t *) user;
*count = image_number;
}
void benchmark_cam(struct uca_camera *cam)
{
char name[256];
uca_cam_get_property(cam, UCA_PROP_NAME, name, 256);
uint32_t val = 5000;
uca_cam_set_property(cam, UCA_PROP_EXPOSURE, &val);
val = 0;
uca_cam_set_property(cam, UCA_PROP_DELAY, &val);
uint32_t width, height, bits;
uca_cam_get_property(cam, UCA_PROP_WIDTH, &width, 0);
uca_cam_get_property(cam, UCA_PROP_HEIGHT, &height, 0);
uca_cam_get_property(cam, UCA_PROP_BITDEPTH, &bits, 0);
int pixel_size = bits == 8 ? 1 : 2;
struct timeval start, stop;
for (int i = 0; i < 2; i++) {
char *buffer = (char *) malloc(width*height*pixel_size);
uca_cam_set_property(cam, UCA_PROP_HEIGHT, &height);
uca_cam_alloc(cam, 20);
/*
* Experiment 1: Grab n frames manually
*/
gettimeofday(&start, NULL);
uca_cam_start_recording(cam);
for (int i = 0; i < 1000; i++)
uca_cam_grab(cam, (char *) buffer, NULL);
uca_cam_stop_recording(cam);
gettimeofday(&stop, NULL);
float seconds = time_diff(&start, &stop) / 1000000.0;
printf("%f,%s;%i;%i;1;%.2f;%.2f\n", seconds,name, width, height, 1000.0 / seconds, width*height*pixel_size*1000.0/ (1024*1024*seconds));
height /= 2;
free(buffer);
}
}
int main(int argc, char *argv[])
{
struct uca *u = uca_init(NULL);
if (u == NULL) {
printf("Couldn't find a camera\n");
return 1;
}
printf("# camera;width;height;experiment;frames-per-second;throughput in MB/s\n");
/* take first camera */
struct uca_camera *cam = u->cameras;
while (cam != NULL) {
benchmark_cam(cam);
cam = cam->next;
}
uca_destroy(u);
return 0;
}
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