EXIF library (libexif) API 0.6.24

exif-content.h
Go to the documentation of this file.
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 LIBEXIF_EXIF_CONTENT_H
24#define LIBEXIF_EXIF_CONTENT_H
25
26#ifdef __cplusplus
27 extern "C" {
28#endif /* __cplusplus */
29
31 typedef struct _ExifContent ExifContent;
32 typedef 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
59 ExifContent *exif_content_new (void);
60
68 ExifContent *exif_content_new_mem (ExifMem *);
69
76 void exif_content_ref (ExifContent *content);
77
83 void exif_content_unref (ExifContent *content);
84
92 void exif_content_free (ExifContent *content);
93
101 void exif_content_add_entry (ExifContent *c, ExifEntry *entry);
102
109 void exif_content_remove_entry (ExifContent *c, ExifEntry *e);
110
119 ExifEntry *exif_content_get_entry (ExifContent *content, ExifTag tag);
120
128 void exif_content_fix (ExifContent *c);
129
130 typedef void (* ExifContentForeachEntryFunc) (ExifEntry *, void *user_data);
131
139 void exif_content_foreach_entry (ExifContent *content,
140 ExifContentForeachEntryFunc func,
141 void *user_data);
142
148ExifIfd exif_content_get_ifd (ExifContent *c);
149
158#define exif_content_get_value(c,t,v,m) \
159 (exif_content_get_entry (c,t) ? \
160 exif_entry_get_value (exif_content_get_entry (c,t),v,m) : NULL)
161
168 void exif_content_dump (ExifContent *content, unsigned int indent);
169
175 void exif_content_log (ExifContent *content, ExifLog *log);
176
177#ifdef __cplusplus
178}
179#endif /* __cplusplus */
180
181#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:163
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:240
exif_content_fix
void exif_content_fix(ExifContent *c)
Fix the IFD to bring it into specification.
Definition: exif-content.c:284
exif_content_ref
void exif_content_ref(ExifContent *content)
Increase reference counter for ExifContent.
Definition: exif-content.c:79
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:202
exif_content_unref
void exif_content_unref(ExifContent *content)
Decrease reference counter for ExifContent.
Definition: exif-content.c:88
exif_content_add_entry
void exif_content_add_entry(ExifContent *c, ExifEntry *entry)
Add an EXIF tag to an IFD.
Definition: exif-content.c:139
exif_content_dump
void exif_content_dump(ExifContent *content, unsigned int indent)
Dump contents of the IFD to stdout.
Definition: exif-content.c:120
exif_content_log
void exif_content_log(ExifContent *content, ExifLog *log)
Set the log message object for this IFD.
Definition: exif-content.c:229
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:216
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:54
exif_content_new
ExifContent * exif_content_new(void)
Reserve memory for and initialize a new ExifContent.
Definition: exif-content.c:43
exif_content_free
void exif_content_free(ExifContent *content)
Actually free the ExifContent.
Definition: exif-content.c:99
exif-data.h
Defines the ExifData type and the associated functions.
exif-entry.h
Handling EXIF entries.
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
_ExifData
Represents the entire EXIF data found in an image.
Definition: exif-data.h:47
_ExifEntry
Data found in one EXIF tag.
Definition: exif-entry.h:43