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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 <unistd.h>
#include "uca.h"
struct image_props {
uint32_t width;
uint32_t height;
uint32_t bits;
};
void grab_callback(uint64_t image_number, void *buffer, void *meta_data, void *user)
{
struct image_props *props = (struct image_props *) user;
const int pixel_size = props->bits == 8 ? 1 : 2;
char filename[256];
sprintf(filename, "out-%04i.raw", (int) image_number);
FILE *fp = fopen(filename, "wb");
fwrite(buffer, props->width * props->height, pixel_size, fp);
fclose(fp);
printf("grabbed picture %i at %p (%ix%i @ %i bits)\n",
(int) image_number, buffer,
props->width, props->height, props->bits);
}
int main(int argc, char *argv[])
{
struct uca *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;
uca_cam_set_property(cam, UCA_PROP_EXPOSURE, &val);
val = 0;
uca_cam_set_property(cam, UCA_PROP_DELAY, &val);
struct image_props props;
uca_cam_get_property(cam, UCA_PROP_WIDTH, &props.width, 0);
uca_cam_get_property(cam, UCA_PROP_HEIGHT, &props.height, 0);
uca_cam_get_property(cam, UCA_PROP_BITDEPTH, &props.bits, 0);
uca_cam_alloc(cam, 10);
uca_cam_register_callback(cam, &grab_callback, &props);
uca_cam_start_recording(cam);
printf("grabbing for 1 second ... ");
fflush(stdout);
sleep(1);
uca_cam_stop_recording(cam);
printf("done\n");
uca_destroy(u);
return 0;
}
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