1 /* test-mem.c
2 *
3 * Copyright (c) 2002 Lutz Mueller <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 * SPDX-License-Identifier: LGPL-2.0-or-later
21 */
22
23 #include <config.h>
24
25 #include <libexif/exif-data.h>
26 #include <libexif/exif-ifd.h>
27 #include <libexif/exif-loader.h>
28
29 #include <stdio.h>
30 #include <stdlib.h>
31
32 int
main(void)33 main (void)
34 {
35 ExifData *ed;
36 /* ExifEntry *e; */
37 unsigned char *eb, size[2];
38 unsigned int ebs;
39 ExifLoader *loader;
40 unsigned int i;
41
42 printf ("Creating EXIF data...\n");
43 ed = exif_data_new ();
44 if (!ed) {
45 fprintf(stderr, "Out of memory\n");
46 exit(13);
47 }
48
49 exif_data_set_data_type (ed, EXIF_DATA_TYPE_UNCOMPRESSED_CHUNKY);
50
51 printf ("Fill EXIF data with all necessary entries to follow specs...\n");
52 exif_data_fix (ed);
53
54 /* Add a dummy thumbnail */
55 ed->size = 4;
56 ed->data = calloc(1, ed->size);
57 if (!ed->data) {
58 fprintf(stderr, "Out of memory\n");
59 exif_data_unref (ed);
60 exit(13);
61 }
62
63 exif_data_dump (ed);
64
65 printf ("Saving EXIF data to memory...\n");
66 exif_data_save_data (ed, &eb, &ebs);
67 exif_data_unref (ed);
68
69 printf ("Writing %i byte(s) EXIF data to loader...\n", ebs);
70 loader = exif_loader_new ();
71 if (!loader) {
72 fprintf(stderr, "Out of memory\n");
73 free (eb);
74 exit(13);
75 }
76 size[0] = (unsigned char) ebs;
77 size[1] = (unsigned char) (ebs >> 8);
78 exif_loader_write (loader, size, 2);
79 for (i = 0; i < ebs && exif_loader_write (loader, eb + i, 1); i++);
80 printf ("Wrote %i byte(s).\n", i);
81 free (eb);
82 ed = exif_loader_get_data (loader);
83 if (!ed) {
84 fprintf(stderr, "Out of memory\n");
85 exit(13);
86 }
87 exif_loader_unref (loader);
88 exif_data_dump (ed);
89 exif_data_unref (ed);
90
91 return 0;
92 }
93