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

EXIF library (libexif) API 0.6.26

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 * SPDX-License-Identifier: LGPL-2.0-or-later
23 */
24
25#ifndef LIBEXIF_EXIF_CONTENT_H
26#define LIBEXIF_EXIF_CONTENT_H
27
28#ifdef __cplusplus
29extern "C" {
30#endif /* __cplusplus */
31
33 typedef struct _ExifContent ExifContent;
34typedef struct _ExifContentPrivate ExifContentPrivate;
35
36#include <libexif/exif-tag.h>
37#include <libexif/exif-entry.h>
38#include <libexif/exif-data.h>
39#include <libexif/exif-log.h>
40#include <libexif/exif-mem.h>
41
42 struct _ExifContent
43{
44 ExifEntry **entries;
45 unsigned int count;
46
48 ExifData *parent;
49
50 ExifContentPrivate *priv;
51};
52
53/* Lifecycle */
54
61 ExifContent *exif_content_new (void);
62
70 ExifContent *exif_content_new_mem (ExifMem *);
71
78void exif_content_ref (ExifContent *content);
79
85void exif_content_unref (ExifContent *content);
86
94void exif_content_free (ExifContent *content);
95
103void exif_content_add_entry (ExifContent *c, ExifEntry *entry);
104
111void exif_content_remove_entry (ExifContent *c, ExifEntry *e);
112
121 ExifEntry *exif_content_get_entry (ExifContent *content, ExifTag tag);
122
130void exif_content_fix (ExifContent *c);
131
132typedef void (* ExifContentForeachEntryFunc) (ExifEntry *, void *user_data);
133
141void exif_content_foreach_entry (ExifContent *content,
142 ExifContentForeachEntryFunc func,
143 void *user_data);
144
150ExifIfd exif_content_get_ifd (ExifContent *c);
151
160#define exif_content_get_value(c,t,v,m) \
161 (exif_content_get_entry (c,t) ? \
162 exif_entry_get_value (exif_content_get_entry (c,t),v,m) : NULL)
163
170void exif_content_dump (ExifContent *content, unsigned int indent);
171
177void exif_content_log (ExifContent *content, ExifLog *log);
178
179#ifdef __cplusplus
180}
181#endif /* __cplusplus */
182
183#endif /* !defined(LIBEXIF_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:165
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:242
exif_content_fix
void exif_content_fix(ExifContent *c)
Fix the IFD to bring it into specification.
Definition exif-content.c:286
exif_content_ref
void exif_content_ref(ExifContent *content)
Increase reference counter for ExifContent.
Definition exif-content.c:81
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:204
exif_content_unref
void exif_content_unref(ExifContent *content)
Decrease reference counter for ExifContent.
Definition exif-content.c:90
exif_content_add_entry
void exif_content_add_entry(ExifContent *c, ExifEntry *entry)
Add an EXIF tag to an IFD.
Definition exif-content.c:141
exif_content_dump
void exif_content_dump(ExifContent *content, unsigned int indent)
Dump contents of the IFD to stdout.
Definition exif-content.c:122
ExifContent
struct _ExifContent ExifContent
Holds all EXIF tags in a single IFD.
Definition exif-content.h:33
exif_content_log
void exif_content_log(ExifContent *content, ExifLog *log)
Set the log message object for this IFD.
Definition exif-content.c:231
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:218
exif_content_new_mem
ExifContent * exif_content_new_mem(ExifMem *)
Reserve memory for and initialize new ExifContent using the specified memory allocator.
Definition exif-content.c:56
exif_content_new
ExifContent * exif_content_new(void)
Reserve memory for and initialize a new ExifContent.
Definition exif-content.c:45
exif_content_free
void exif_content_free(ExifContent *content)
Actually free the ExifContent.
Definition exif-content.c:101
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:39
exif-entry.h
Handling EXIF entries.
ExifEntry
struct _ExifEntry ExifEntry
Data found in one EXIF tag.
Definition exif-entry.h:37
exif-log.h
Log message infrastructure.
ExifLog
struct _ExifLog ExifLog
State maintained by the logging interface.
Definition exif-log.h:36
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:59
exif-tag.h
Handling EXIF tags.
ExifTag
ExifTag
EXIF tags.
Definition exif-tag.h:36
_ExifContent
Definition exif-content.h:43
_ExifContent::parent
ExifData * parent
Data containing this content.
Definition exif-content.h:48