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/* Copyright (C) 2011, 2012 Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
(Karlsruhe Institute of Technology)
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General Public License along
with this library; if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA 02110, USA */
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.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));
sleep(3);
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);
if (error != UCA_NO_ERROR)
break;
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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