release/src/router/libexif/test/test-value.c

   1 /* test-value.c
   2  *
   3  * Copyright 2002 Lutz M\uffffller <lutz@users.sourceforge.net>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA  02110-1301  USA.
  19  */
  20
  21 #include <libexif/exif-utils.h>
  22 #include <libexif/exif-data.h>
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 int
  28 main ()
  29 {
  30         ExifData *d;
  31         ExifEntry *e;
  32         char v[1024];
  33         ExifSRational r = {1., 20.};
  34         unsigned int i;
  35
  36         d = exif_data_new ();
  37         if (!d) {
  38                 printf ("Error running exif_data_new()\n");
  39                 exit(13);
  40         }
  41
  42         e = exif_entry_new ();
  43         if (!e) {
  44                 printf ("Error running exif_entry_new()\n");
  45                 exit(13);
  46         }
  47
  48         exif_content_add_entry (d->ifd[EXIF_IFD_0], e);
  49         exif_entry_initialize (e, EXIF_TAG_SHUTTER_SPEED_VALUE);
  50         exif_set_srational (e->data, exif_data_get_byte_order (d), r);
  51
  52         for (i = 30; i > 0; i--) {
  53                 printf ("Length %2i: '%s'\n", i,
  54                         exif_entry_get_value (e, v, i));
  55         }
  56
  57         exif_entry_unref (e);
  58         exif_data_unref (d);
  59
  60         return 0;
  61 }