/usr/include/libexif/exif-content.h is in libexif-dev 0.6.20-2ubuntu0.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | /*! \file exif-content.h
* \brief Handling EXIF IFDs
*/
/*
* Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*/
#ifndef __EXIF_CONTENT_H__
#define __EXIF_CONTENT_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*! Holds all EXIF tags in a single IFD */
typedef struct _ExifContent ExifContent;
typedef struct _ExifContentPrivate ExifContentPrivate;
#include <libexif/exif-tag.h>
#include <libexif/exif-entry.h>
#include <libexif/exif-data.h>
#include <libexif/exif-log.h>
#include <libexif/exif-mem.h>
struct _ExifContent
{
ExifEntry **entries;
unsigned int count;
/*! Data containing this content */
ExifData *parent;
ExifContentPrivate *priv;
};
/* Lifecycle */
ExifContent *exif_content_new (void);
ExifContent *exif_content_new_mem (ExifMem *);
void exif_content_ref (ExifContent *content);
void exif_content_unref (ExifContent *content);
void exif_content_free (ExifContent *content);
/*! Add an EXIF tag to an IFD.
* If this tag already exists in the IFD, this function does nothing.
* \pre The "tag" member of the entry must be set on entry.
*
* \param[out] c IFD
* \param[in] entry EXIF entry to add
*/
void exif_content_add_entry (ExifContent *c, ExifEntry *entry);
/*! Remove an EXIF tag from an IFD.
* If this tag does not exist in the IFD, this function does nothing.
*
* \param[out] c IFD
* \param[in] e EXIF entry to remove
*/
void exif_content_remove_entry (ExifContent *c, ExifEntry *e);
/*! Return the #ExifEntry in this IFD corresponding to the given tag.
* This is a pointer into a member of the #ExifContent array and must NOT be
* freed or unrefed by the caller.
*
* \param[in] content EXIF content for an IFD
* \param[in] tag EXIF tag to return
* \return #ExifEntry of the tag, or NULL on error
*/
ExifEntry *exif_content_get_entry (ExifContent *content, ExifTag tag);
/*! Fix the IFD to bring it into specification. Call #exif_entry_fix on
* each entry in this IFD to fix existing entries, create any new entries
* that are mandatory in this IFD but do not yet exist, and remove any
* entries that are not allowed in this IFD.
*
* \param[in,out] c EXIF content for an IFD
*/
void exif_content_fix (ExifContent *c);
typedef void (* ExifContentForeachEntryFunc) (ExifEntry *, void *user_data);
/*! Executes function on each EXIF tag in this IFD in turn.
* The tags will not necessarily be visited in numerical order.
*
* \param[in,out] content IFD over which to iterate
* \param[in] func function to call for each entry
* \param[in] user_data data to pass into func on each call
*/
void exif_content_foreach_entry (ExifContent *content,
ExifContentForeachEntryFunc func,
void *user_data);
/*! Return the IFD number in which the given #ExifContent is found.
*
* \param[in] c an #ExifContent*
* \return IFD number, or #EXIF_IFD_COUNT on error
*/
ExifIfd exif_content_get_ifd (ExifContent *c);
/*! Return a textual representation of the EXIF data for a tag.
*
* \param[in] c #ExifContent* for an IFD
* \param[in] t #ExifTag to return
* \param[out] v char* buffer in which to store value
* \param[in] m unsigned int length of the buffer v
* \return the v pointer, or NULL on error
*/
#define exif_content_get_value(c,t,v,m) \
(exif_content_get_entry (c,t) ? \
exif_entry_get_value (exif_content_get_entry (c,t),v,m) : NULL)
/*! Dump contents of the IFD to stdout.
* This is intended for diagnostic purposes only.
*
* \param[in] content IFD data
* \param[in] indent how many levels deep to indent the data
*/
void exif_content_dump (ExifContent *content, unsigned int indent);
/*! Set the log message object for this IFD.
*
* \param[in] content IFD
* \param[in] log #ExifLog*
*/
void exif_content_log (ExifContent *content, ExifLog *log);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __EXIF_CONTENT_H__ */
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