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#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "uca.h"
#define handle_error(errno) {if ((errno) != UCA_NO_ERROR) printf("error at <%s:%i>\n", \
__FILE__, __LINE__);}
static struct uca *u = NULL;
void sigint_handler(int signal)
{
printf("Closing down libuca\n");
handle_error(uca_cam_stop_recording(u->cameras));
uca_destroy(u);
exit(signal);
}
int main(int argc, char *argv[])
{
(void) signal(SIGINT, sigint_handler);
u = uca_init(NULL);
if (u == NULL) {
printf("Couldn't find a camera\n");
return 1;
}
/* take first camera */
struct uca_camera *cam = u->cameras;
uint32_t val = 5000;
handle_error(uca_cam_set_property(cam, UCA_PROP_EXPOSURE, &val));
val = 0;
handle_error(uca_cam_set_property(cam, UCA_PROP_DELAY, &val));
val = UCA_TIMESTAMP_ASCII | UCA_TIMESTAMP_BINARY;
handle_error(uca_cam_set_property(cam, UCA_PROP_TIMESTAMP_MODE, &val));
val = 1;
handle_error(uca_cam_set_property(cam, UCA_PROP_GRAB_AUTO, &val));
uint32_t width, height, bits;
handle_error(uca_cam_get_property(cam, UCA_PROP_WIDTH, &width, 0));
handle_error(uca_cam_get_property(cam, UCA_PROP_HEIGHT, &height, 0));
handle_error(uca_cam_get_property(cam, UCA_PROP_BITDEPTH, &bits, 0));
handle_error(uca_cam_alloc(cam, 20));
const int pixel_size = bits == 8 ? 1 : 2;
uint16_t *buffer = (uint16_t *) malloc(width * height * pixel_size);
handle_error(uca_cam_start_recording(cam));
uint32_t error = UCA_NO_ERROR;
char filename[FILENAME_MAX];
int counter = 0;
while ((error == UCA_NO_ERROR) && (counter < 20)) {
error = uca_cam_grab(cam, (char *) buffer, NULL);
snprintf(filename, FILENAME_MAX, "frame-%08i.raw", counter++);
FILE *fp = fopen(filename, "wb");
fwrite(buffer, width*height, pixel_size, fp);
fclose(fp);
}
handle_error(uca_cam_stop_recording(cam));
uca_destroy(u);
free(buffer);
return error != UCA_NO_ERROR ? 1 : 0;
}
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