/* exif-utils.h
 *
 * Copyright (C) 2001 Lutz Müller <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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef __EXIF_UTILS_H__
#define __EXIF_UTILS_H__

#ifdef __cplusplus
extern          "C"
{
#endif				/* __cplusplus */

#include "exif-byte-order.h"

    typedef char    ExifByte;	/* 1 byte  */
    typedef char   *ExifAscii;
    typedef unsigned short ExifShort;	/* 2 bytes */
    typedef unsigned long ExifLong;	/* 4 bytes */
    typedef struct
    {
	ExifLong        numerator;
	ExifLong        denominator;
    }
    ExifRational;
    typedef char    ExifUndefined;	/* 1 byte  */
    typedef signed long ExifSLong;	/* 4 bytes */
    typedef struct
    {
	ExifSLong       numerator;
	ExifSLong       denominator;
    }
    ExifSRational;


    ExifShort       exif_get_short (const unsigned char *b,
				    ExifByteOrder order);
    ExifLong        exif_get_long (const unsigned char *b,
				   ExifByteOrder order);
    ExifSLong       exif_get_slong (const unsigned char *b,
				    ExifByteOrder order);
    ExifRational    exif_get_rational (const unsigned char *b,
				       ExifByteOrder order);
    ExifSRational   exif_get_srational (const unsigned char *b,
					ExifByteOrder order);

    void            exif_set_short (unsigned char *b, ExifByteOrder order,
				    ExifShort value);
    void            exif_set_long (unsigned char *b, ExifByteOrder order,
				   ExifLong value);
    void            exif_set_slong (unsigned char *b, ExifByteOrder order,
				    ExifSLong value);
    void            exif_set_rational (unsigned char *b, ExifByteOrder order,
				       ExifRational value);
    void            exif_set_srational (unsigned char *b, ExifByteOrder order,
					ExifSRational value);

#ifdef __cplusplus
}
#endif				/* __cplusplus */

#endif				/* __EXIF_UTILS_H__ */
