EXIF library (libexif) API: libexif/exif-content.h Source File

EXIF library (libexif) API 0.6.20

exif-content.h
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1
4/*
5 * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301 USA.
21 */
22
23#ifndef __EXIF_CONTENT_H__
24#define __EXIF_CONTENT_H__
25
26#ifdef __cplusplus
27extern "C" {
28#endif /* __cplusplus */
29
31 typedef struct _ExifContent ExifContent;
32typedef struct _ExifContentPrivate ExifContentPrivate;
33
34#include <libexif/exif-tag.h>
35#include <libexif/exif-entry.h>
36#include <libexif/exif-data.h>
37#include <libexif/exif-log.h>
38#include <libexif/exif-mem.h>
39
40 struct _ExifContent
41{
42 ExifEntry **entries;
43 unsigned int count;
44
46 ExifData *parent;
47
48 ExifContentPrivate *priv;
49};
50
51/* Lifecycle */
52 ExifContent *exif_content_new (void);
53 ExifContent *exif_content_new_mem (ExifMem *);
54void exif_content_ref (ExifContent *content);
55void exif_content_unref (ExifContent *content);
56void exif_content_free (ExifContent *content);
57
65void exif_content_add_entry (ExifContent *c, ExifEntry *entry);
66
73void exif_content_remove_entry (ExifContent *c, ExifEntry *e);
74
83 ExifEntry *exif_content_get_entry (ExifContent *content, ExifTag tag);
84
92void exif_content_fix (ExifContent *c);
93
94typedef void (* ExifContentForeachEntryFunc) (ExifEntry *, void *user_data);
95
103void exif_content_foreach_entry (ExifContent *content,
104 ExifContentForeachEntryFunc func,
105 void *user_data);
106
112ExifIfd exif_content_get_ifd (ExifContent *c);
113
122#define exif_content_get_value(c,t,v,m) \
123 (exif_content_get_entry (c,t) ? \
124 exif_entry_get_value (exif_content_get_entry (c,t),v,m) : NULL)
125
132void exif_content_dump (ExifContent *content, unsigned int indent);
133
139void exif_content_log (ExifContent *content, ExifLog *log);
140
141#ifdef __cplusplus
142}
143#endif /* __cplusplus */
144
145#endif /* __EXIF_CONTENT_H__ */
exif_content_remove_entry
void exif_content_remove_entry(ExifContent *c, ExifEntry *e)
Remove an EXIF tag from an IFD.
Definition exif-content.c:157
exif_content_get_ifd
ExifIfd exif_content_get_ifd(ExifContent *c)
Return the IFD number in which the given ExifContent is found.
Definition exif-content.c:234
exif_content_fix
void exif_content_fix(ExifContent *c)
Fix the IFD to bring it into specification.
Definition exif-content.c:278
exif_content_get_entry
ExifEntry * exif_content_get_entry(ExifContent *content, ExifTag tag)
Return the ExifEntry in this IFD corresponding to the given tag.
Definition exif-content.c:196
exif_content_add_entry
void exif_content_add_entry(ExifContent *c, ExifEntry *entry)
Add an EXIF tag to an IFD.
Definition exif-content.c:133
exif_content_dump
void exif_content_dump(ExifContent *content, unsigned int indent)
Dump contents of the IFD to stdout.
Definition exif-content.c:114
ExifContent
struct _ExifContent ExifContent
Holds all EXIF tags in a single IFD.
Definition exif-content.h:31
exif_content_log
void exif_content_log(ExifContent *content, ExifLog *log)
Set the log message object for this IFD.
Definition exif-content.c:223
exif_content_foreach_entry
void exif_content_foreach_entry(ExifContent *content, ExifContentForeachEntryFunc func, void *user_data)
Executes function on each EXIF tag in this IFD in turn.
Definition exif-content.c:210
exif-data.h
Defines the ExifData type and the associated functions.
ExifData
struct _ExifData ExifData
Represents the entire EXIF data found in an image.
Definition exif-data.h:38
exif-entry.h
Handling EXIF entries.
ExifEntry
struct _ExifEntry ExifEntry
Data found in one EXIF tag.
Definition exif-entry.h:35
exif-log.h
Log message infrastructure.
ExifLog
struct _ExifLog ExifLog
State maintained by the logging interface.
Definition exif-log.h:34
exif-mem.h
Define the ExifMem data type and the associated functions.
ExifMem
struct _ExifMem ExifMem
ExifMem define a memory allocator.
Definition exif-mem.h:57
exif-tag.h
Handling EXIF tags.
ExifTag
ExifTag
EXIF tags.
Definition exif-tag.h:34
_ExifContent
Definition exif-content.h:41
_ExifContent::parent
ExifData * parent
Data containing this content.
Definition exif-content.h:46