sxiv/exif.h

/* sxiv: exif.h
 * Copyright (c) 2012 Bert Muennich <be.muennich at googlemail.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef EXIF_H
#define EXIF_H

#include "types.h"

enum {
	JPEG_MARKER_SOI  = 0xFFD8,
	JPEG_MARKER_APP1 = 0xFFE1
};

enum {
	EXIF_MAX_LEN          = 0x10000,
	EXIF_HEAD             = 0x45786966,
	EXIF_BO_BIG_ENDIAN    = 0x4D4D,
	EXIF_BO_LITTLE_ENDIAN = 0x4949,
	EXIF_TAG_MARK         = 0x002A,
	EXIF_TAG_ORIENTATION  = 0x0112
};

int exif_orientation(const fileinfo_t*);
void exif_auto_orientate(const fileinfo_t*); /* in image.c */

#endif /* EXIF_H */