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/*! \file exif-data.h
* \brief Defines the ExifData type and the associated functions.
*
* \author Lutz Mueller <lutz@users.sourceforge.net>
* \date 2001-2005
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __EXIF_DATA_H__
#define __EXIF_DATA_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <libexif/exif-byte-order.h>
#include <libexif/exif-data-type.h>
#include <libexif/exif-ifd.h>
#include <libexif/exif-log.h>
#include <libexif/exif-tag.h>
typedef struct _ExifData ExifData;
typedef struct _ExifDataPrivate ExifDataPrivate;
#include <libexif/exif-content.h>
#include <libexif/exif-mnote-data.h>
#include <libexif/exif-mem.h>
struct _ExifData
{
ExifContent *ifd[EXIF_IFD_COUNT];
unsigned char *data;
unsigned int size;
ExifDataPrivate *priv;
};
ExifData *exif_data_new (void);
ExifData *exif_data_new_mem (ExifMem *);
/*! \brief load exif data from file
* \param[in] path filename including path
*/
ExifData *exif_data_new_from_file (const char *path);
ExifData *exif_data_new_from_data (const unsigned char *data,
unsigned int size);
void exif_data_load_data (ExifData *data, const unsigned char *d,
unsigned int size);
void exif_data_save_data (ExifData *data, unsigned char **d,
unsigned int *size);
void exif_data_ref (ExifData *data);
void exif_data_unref (ExifData *data);
void exif_data_free (ExifData *data);
ExifByteOrder exif_data_get_byte_order (ExifData *data);
void exif_data_set_byte_order (ExifData *data, ExifByteOrder order);
ExifMnoteData *exif_data_get_mnote_data (ExifData *);
void exif_data_fix (ExifData *);
typedef void (* ExifDataForeachContentFunc) (ExifContent *, void *user_data);
void exif_data_foreach_content (ExifData *data,
ExifDataForeachContentFunc func,
void *user_data);
typedef enum {
EXIF_DATA_OPTION_IGNORE_UNKNOWN_TAGS = 1 << 0,
EXIF_DATA_OPTION_FOLLOW_SPECIFICATION = 1 << 1,
EXIF_DATA_OPTION_DONT_CHANGE_MAKER_NOTE = 1 << 2
} ExifDataOption;
const char *exif_data_option_get_name (ExifDataOption);
const char *exif_data_option_get_description (ExifDataOption);
void exif_data_set_option (ExifData *, ExifDataOption);
void exif_data_unset_option (ExifData *, ExifDataOption);
void exif_data_set_data_type (ExifData *, ExifDataType);
ExifDataType exif_data_get_data_type (ExifData *);
/* For debugging purposes and error reporting */
void exif_data_dump (ExifData *data);
void exif_data_log (ExifData *data, ExifLog *log);
/** convenience macro. */
#define exif_data_get_entry(d,t) \
(exif_content_get_entry(d->ifd[EXIF_IFD_0],t) ? \
exif_content_get_entry(d->ifd[EXIF_IFD_0],t) : \
exif_content_get_entry(d->ifd[EXIF_IFD_1],t) ? \
exif_content_get_entry(d->ifd[EXIF_IFD_1],t) : \
exif_content_get_entry(d->ifd[EXIF_IFD_EXIF],t) ? \
exif_content_get_entry(d->ifd[EXIF_IFD_EXIF],t) : \
exif_content_get_entry(d->ifd[EXIF_IFD_GPS],t) ? \
exif_content_get_entry(d->ifd[EXIF_IFD_GPS],t) : \
exif_content_get_entry(d->ifd[EXIF_IFD_INTEROPERABILITY],t) ? \
exif_content_get_entry(d->ifd[EXIF_IFD_INTEROPERABILITY],t) : NULL)
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __EXIF_DATA_H__ */
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