1 /* test-value.c 2 * 3 * Copyright 2002 Lutz M\uffffller <lutz (at) 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 } 62
