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/*
* Example libfprint image capture program
* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <libfprint/fprint.h>
struct fp_dscv_dev *discover_device(struct fp_dscv_dev **discovered_devs)
{
struct fp_dscv_dev *ddev = discovered_devs[0];
struct fp_driver *drv;
if (!ddev)
return NULL;
drv = fp_dscv_dev_get_driver(ddev);
printf("Found device claimed by %s driver\n", fp_driver_get_full_name(drv));
return ddev;
}
int main(void)
{
int r = 1;
struct fp_dscv_dev *ddev;
struct fp_dscv_dev **discovered_devs;
struct fp_dev *dev;
struct fp_img *img = NULL;
r = fp_init();
if (r < 0) {
fprintf(stderr, "Failed to initialize libfprint\n");
exit(1);
}
fp_set_debug(3);
discovered_devs = fp_discover_devs();
if (!discovered_devs) {
fprintf(stderr, "Could not discover devices\n");
goto out;
}
ddev = discover_device(discovered_devs);
if (!ddev) {
fprintf(stderr, "No devices detected.\n");
goto out;
}
dev = fp_dev_open(ddev);
fp_dscv_devs_free(discovered_devs);
if (!dev) {
fprintf(stderr, "Could not open device.\n");
goto out;
}
if (!fp_dev_supports_imaging(dev)) {
fprintf(stderr, "this device does not have imaging capabilities.\n");
goto out_close;
}
printf("Opened device. It's now time to scan your finger.\n\n");
r = fp_dev_img_capture(dev, 0, &img);
if (r) {
fprintf(stderr, "image capture failed, code %d\n", r);
goto out_close;
}
r = fp_img_save_to_file(img, "finger.pgm");
if (r) {
fprintf(stderr, "img save failed, code %d\n", r);
goto out_close;
}
fp_img_standardize(img);
r = fp_img_save_to_file(img, "finger_standardized.pgm");
fp_img_free(img);
if (r) {
fprintf(stderr, "standardized img save failed, code %d\n", r);
goto out_close;
}
r = 0;
out_close:
fp_dev_close(dev);
out:
fp_exit();
return r;
}
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