7e6f25908b
Make it easier for application developers, don't have to care about this level of abstraction which we're intending to make superfluous to them.
106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
/*
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* Example libfprint image capture program
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* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <libfprint/fprint.h>
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struct fp_dscv_dev *discover_device(struct fp_dscv_dev **discovered_devs)
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{
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struct fp_dscv_dev *ddev = NULL;
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int i;
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for (i = 0; ddev = discovered_devs[i]; i++) {
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struct fp_driver *drv = fp_dscv_dev_get_driver(ddev);
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printf("Found device claimed by %s driver\n",
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fp_driver_get_full_name(drv));
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return ddev;
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}
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return ddev;
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}
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int main(void)
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{
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int r = 1;
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struct fp_dscv_dev *ddev;
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struct fp_dscv_dev **discovered_devs;
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struct fp_dev *dev;
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struct fp_img *img = NULL;
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r = fp_init();
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if (r < 0) {
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fprintf(stderr, "Failed to initialize libfprint\n");
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exit(1);
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}
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discovered_devs = fp_discover_devs();
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if (!discovered_devs) {
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fprintf(stderr, "Could not discover devices\n");
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exit(1);
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}
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ddev = discover_device(discovered_devs);
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if (!ddev) {
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fprintf(stderr, "No devices detected.\n");
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exit(1);
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}
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dev = fp_dev_open(ddev);
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fp_dscv_devs_free(discovered_devs);
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if (!dev) {
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fprintf(stderr, "Could not open device.\n");
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exit(1);
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}
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if (!fp_dev_supports_imaging(dev)) {
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fprintf(stderr, "this device does not have imaging capabilities.\n");
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goto out_close;
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}
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printf("Opened device. It's now time to scan your finger.\n\n");
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r = fp_dev_img_capture(dev, 0, &img);
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if (r) {
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fprintf(stderr, "image capture failed, code %d\n", r);
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goto out_close;
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}
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r = fp_img_save_to_file(img, "finger.pgm");
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if (r) {
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fprintf(stderr, "img save failed, code %d\n", r);
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goto out_close;
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}
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fp_img_standardize(img);
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r = fp_img_save_to_file(img, "finger_standardized.pgm");
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fp_img_free(img);
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if (r) {
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fprintf(stderr, "standardized img save failed, code %d\n", r);
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goto out_close;
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}
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r = 0;
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out_close:
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fp_dev_close(dev);
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return r;
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}
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