exif-entry.h

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00001 /* exif-entry.h
00002  *
00003  * Copyright © 2001 Lutz Müller <lutz@users.sourceforge.net>
00004  *
00005  * This library is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU Lesser General Public
00007  * License as published by the Free Software Foundation; either
00008  * version 2 of the License, or (at your option) any later version.
00009  *
00010  * This library is distributed in the hope that it will be useful, 
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of 
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Lesser General Public License for more details. 
00014  *
00015  * You should have received a copy of the GNU Lesser General Public
00016  * License along with this library; if not, write to the
00017  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00018  * Boston, MA 02111-1307, USA.
00019  */
00020 
00021 #ifndef __EXIF_ENTRY_H__
00022 #define __EXIF_ENTRY_H__
00023 
00024 #ifdef __cplusplus
00025 extern "C" {
00026 #endif /* __cplusplus */
00027 
00028 typedef struct _ExifEntry        ExifEntry;
00029 typedef struct _ExifEntryPrivate ExifEntryPrivate;
00030 
00031 #include <libexif/exif-content.h>
00032 #include <libexif/exif-format.h>
00033 #include <libexif/exif-mem.h>
00034 
00035 struct _ExifEntry {
00036         ExifTag tag;
00037         ExifFormat format;
00038         unsigned long components;
00039 
00040         unsigned char *data;
00041         unsigned int size;
00042 
00043         /* Content containing this entry */
00044         ExifContent *parent;
00045 
00046         ExifEntryPrivate *priv;
00047 };
00048 
00049 /* Lifecycle */
00050 ExifEntry  *exif_entry_new     (void);
00051 ExifEntry  *exif_entry_new_mem (ExifMem *);
00052 void        exif_entry_ref     (ExifEntry *entry);
00053 void        exif_entry_unref   (ExifEntry *entry);
00054 void        exif_entry_free  (ExifEntry *entry);
00055 
00056 void        exif_entry_initialize (ExifEntry *entry, ExifTag tag);
00057 void        exif_entry_fix        (ExifEntry *entry);
00058 
00059 /* For your convenience */
00060 const char *exif_entry_get_value (ExifEntry *entry, char *val,
00061                                   unsigned int maxlen);
00062 
00063 void        exif_entry_dump      (ExifEntry *entry, unsigned int indent);
00064 
00065 #define exif_entry_get_ifd(e) ((e)?exif_content_get_ifd((e)->parent):EXIF_IFD_COUNT)
00066 
00067 #ifdef __cplusplus
00068 }
00069 #endif /* __cplusplus */
00070 
00071 #endif /* __EXIF_ENTRY_H__ */

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