1 /* exif-mnote-data.c
2 *
3 * Copyright (C) 2003 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 2.1 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 <config.h>
22
23 #include <libexif/exif-mnote-data.h>
24 #include <libexif/exif-mnote-data-priv.h>
25
26 #include <stdlib.h>
27 #include <string.h>
28
29 struct _ExifMnoteDataPriv
30 {
31 unsigned int ref_count;
32 };
33
34 void
exif_mnote_data_construct(ExifMnoteData * d,ExifMem * mem)35 exif_mnote_data_construct (ExifMnoteData *d, ExifMem *mem)
36 {
37 if (!d || !mem) return;
38 if (d->priv) return;
39 d->priv = exif_mem_alloc (mem, sizeof (ExifMnoteDataPriv));
40 if (!d->priv) return;
41
42 d->priv->ref_count = 1;
43
44 d->mem = mem;
45 exif_mem_ref (mem);
46 }
47
48 void
exif_mnote_data_ref(ExifMnoteData * d)49 exif_mnote_data_ref (ExifMnoteData *d)
50 {
51 if (d && d->priv) d->priv->ref_count++;
52 }
53
54 static void
exif_mnote_data_free(ExifMnoteData * d)55 exif_mnote_data_free (ExifMnoteData *d)
56 {
57 ExifMem *mem = d ? d->mem : NULL;
58
59 if (!d) return;
60 if (d->priv) {
61 if (d->methods.free) d->methods.free (d);
62 exif_mem_free (mem, d->priv);
63 d->priv = NULL;
64 }
65 exif_log_unref (d->log);
66 exif_mem_free (mem, d);
67 exif_mem_unref (mem);
68 }
69
70 void
exif_mnote_data_unref(ExifMnoteData * d)71 exif_mnote_data_unref (ExifMnoteData *d)
72 {
73 if (!d || !d->priv) return;
74 if (d->priv->ref_count > 0) d->priv->ref_count--;
75 if (!d->priv->ref_count)
76 exif_mnote_data_free (d);
77 }
78
79 void
exif_mnote_data_load(ExifMnoteData * d,const unsigned char * buf,unsigned int buf_size)80 exif_mnote_data_load (ExifMnoteData *d, const unsigned char *buf,
81 unsigned int buf_size)
82 {
83 if (!d || !d->methods.load) return;
84 d->methods.load (d, buf, buf_size);
85 }
86
87 void
exif_mnote_data_save(ExifMnoteData * d,unsigned char ** buf,unsigned int * buf_size)88 exif_mnote_data_save (ExifMnoteData *d, unsigned char **buf,
89 unsigned int *buf_size)
90 {
91 if (!d || !d->methods.save) return;
92 d->methods.save (d, buf, buf_size);
93 }
94
95 void
exif_mnote_data_set_byte_order(ExifMnoteData * d,ExifByteOrder o)96 exif_mnote_data_set_byte_order (ExifMnoteData *d, ExifByteOrder o)
97 {
98 if (!d || !d->methods.set_byte_order) return;
99 d->methods.set_byte_order (d, o);
100 }
101
102 void
exif_mnote_data_set_offset(ExifMnoteData * d,unsigned int o)103 exif_mnote_data_set_offset (ExifMnoteData *d, unsigned int o)
104 {
105 if (!d || !d->methods.set_offset) return;
106 d->methods.set_offset (d, o);
107 }
108
109 unsigned int
exif_mnote_data_count(ExifMnoteData * d)110 exif_mnote_data_count (ExifMnoteData *d)
111 {
112 if (!d || !d->methods.count) return 0;
113 return d->methods.count (d);
114 }
115
116 unsigned int
exif_mnote_data_get_id(ExifMnoteData * d,unsigned int n)117 exif_mnote_data_get_id (ExifMnoteData *d, unsigned int n)
118 {
119 if (!d || !d->methods.get_id) return 0;
120 return d->methods.get_id (d, n);
121 }
122
123 const char *
exif_mnote_data_get_name(ExifMnoteData * d,unsigned int n)124 exif_mnote_data_get_name (ExifMnoteData *d, unsigned int n)
125 {
126 if (!d || !d->methods.get_name) return NULL;
127 return d->methods.get_name (d, n);
128 }
129
130 const char *
exif_mnote_data_get_title(ExifMnoteData * d,unsigned int n)131 exif_mnote_data_get_title (ExifMnoteData *d, unsigned int n)
132 {
133 if (!d || !d->methods.get_title) return NULL;
134 return d->methods.get_title (d, n);
135 }
136
137 const char *
exif_mnote_data_get_description(ExifMnoteData * d,unsigned int n)138 exif_mnote_data_get_description (ExifMnoteData *d, unsigned int n)
139 {
140 if (!d || !d->methods.get_description) return NULL;
141 return d->methods.get_description (d, n);
142 }
143
144 char *
exif_mnote_data_get_value(ExifMnoteData * d,unsigned int n,char * val,unsigned int maxlen)145 exif_mnote_data_get_value (ExifMnoteData *d, unsigned int n, char *val, unsigned int maxlen)
146 {
147 if (!d || !d->methods.get_value) return NULL;
148 return d->methods.get_value (d, n, val, maxlen);
149 }
150
151 void
exif_mnote_data_log(ExifMnoteData * d,ExifLog * log)152 exif_mnote_data_log (ExifMnoteData *d, ExifLog *log)
153 {
154 if (!d) return;
155 exif_log_unref (d->log);
156 d->log = log;
157 exif_log_ref (log);
158 }
159