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Initial implementation for image device access and capture

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Also added new example: img_capture
This commit is contained in:
Daniel Drake
2007-10-27 00:06:53 +01:00
parent 0aac3706d7
commit f3a838e856
9 changed files with 369 additions and 8 deletions
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5
examples/Makefile.am
View File

@@ -1,5 +1,5 @@
INCLUDES = -I$(top_srcdir)
noinst_PROGRAMS = verify_live enroll verify
noinst_PROGRAMS = verify_live enroll verify img_capture
verify_live_SOURCES = verify_live.c
verify_live_LDADD = ../libfprint/libfprint.la -lfprint
@@ -10,3 +10,6 @@ enroll_LDADD = ../libfprint/libfprint.la -lfprint
verify_SOURCES = verify.c
verify_LDADD = ../libfprint/libfprint.la -lfprint
img_capture_SOURCES = img_capture.c
img_capture_LDADD = ../libfprint/libfprint.la -lfprint

100
examples/img_capture.c Normal file
View File

@@ -0,0 +1,100 @@
/*
* 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 = NULL;
int i;
for (i = 0; ddev = discovered_devs[i]; i++) {
struct fp_driver *drv = fp_dscv_dev_get_driver(ddev);
printf("Found device claimed by %s driver\n",
fp_driver_get_full_name(drv));
return ddev;
}
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_dev *imgdev;
struct fp_img *img = NULL;
r = fp_init();
if (r < 0) {
fprintf(stderr, "Failed to initialize libfprint\n");
exit(1);
}
discovered_devs = fp_discover_devs();
if (!discovered_devs) {
fprintf(stderr, "Could not discover devices\n");
exit(1);
}
ddev = discover_device(discovered_devs);
if (!ddev) {
fprintf(stderr, "No devices detected.\n");
exit(1);
}
dev = fp_dev_open(ddev);
fp_dscv_devs_free(discovered_devs);
if (!dev) {
fprintf(stderr, "Could not open device.\n");
exit(1);
}
imgdev = fp_dev_to_img_dev(dev);
if (!imgdev) {
fprintf(stderr, "could not get image dev, is this an imaging "
"device?\n");
goto out_close;
}
printf("Opened device. It's now time to scan your finger.\n\n");
r = fp_imgdev_capture(imgdev, 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;
}
r = 0;
out_close:
fp_dev_close(dev);
return r;
}