EXIF library (libexif) API  0.6.24
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 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 
41 {
42  ExifEntry **entries;
43  unsigned int count;
44 
47 
48  ExifContentPrivate *priv;
49 };
50 
51 /* Lifecycle */
52 
60 
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 
102 
110 
120 
128 void exif_content_fix (ExifContent *c);
129 
130 typedef void (* ExifContentForeachEntryFunc) (ExifEntry *, void *user_data);
131 
140  ExifContentForeachEntryFunc func,
141  void *user_data);
142 
148 ExifIfd 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) */
void exif_content_remove_entry(ExifContent *c, ExifEntry *e)
Remove an EXIF tag from an IFD.
Definition: exif-content.c:163
ExifIfd exif_content_get_ifd(ExifContent *c)
Return the IFD number in which the given ExifContent is found.
Definition: exif-content.c:240
void exif_content_fix(ExifContent *c)
Fix the IFD to bring it into specification.
Definition: exif-content.c:284
ExifContent * exif_content_new_mem(ExifMem *)
Reserve memory for and initialize new ExifContent using the specified memory allocator.
Definition: exif-content.c:54
void exif_content_ref(ExifContent *content)
Increase reference counter for ExifContent.
Definition: exif-content.c:79
void exif_content_unref(ExifContent *content)
Decrease reference counter for ExifContent.
Definition: exif-content.c:88
void exif_content_add_entry(ExifContent *c, ExifEntry *entry)
Add an EXIF tag to an IFD.
Definition: exif-content.c:139
void exif_content_dump(ExifContent *content, unsigned int indent)
Dump contents of the IFD to stdout.
Definition: exif-content.c:120
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
void exif_content_log(ExifContent *content, ExifLog *log)
Set the log message object for this IFD.
Definition: exif-content.c:229
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
ExifContent * exif_content_new(void)
Reserve memory for and initialize a new ExifContent.
Definition: exif-content.c:43
void exif_content_free(ExifContent *content)
Actually free the ExifContent.
Definition: exif-content.c:99
Defines the ExifData type and the associated functions.
Handling EXIF entries.
Log message infrastructure.
struct _ExifLog ExifLog
State maintained by the logging interface.
Definition: exif-log.h:34
Define the ExifMem data type and the associated functions.
struct _ExifMem ExifMem
ExifMem define a memory allocator.
Definition: exif-mem.h:57
Handling EXIF tags.
ExifTag
EXIF tags.
Definition: exif-tag.h:34
Definition: exif-content.h:41
ExifData * parent
Data containing this content.
Definition: exif-content.h:46
Represents the entire EXIF data found in an image.
Definition: exif-data.h:47
Data found in one EXIF tag.
Definition: exif-entry.h:43