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
29struct _ExifMnoteDataPriv
30{
31	unsigned int ref_count;
32};
33
34void
35exif_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
48void
49exif_mnote_data_ref (ExifMnoteData *d)
50{
51	if (d && d->priv) d->priv->ref_count++;
52}
53
54static void
55exif_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
70void
71exif_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
79void
80exif_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
87void
88exif_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
95void
96exif_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
102void
103exif_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
109unsigned int
110exif_mnote_data_count (ExifMnoteData *d)
111{
112	if (!d || !d->methods.count) return 0;
113	return d->methods.count (d);
114}
115
116unsigned int
117exif_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
123const char *
124exif_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
130const char *
131exif_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
137const char *
138exif_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
144char *
145exif_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
151void
152exif_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