/*! \file exif-tag.h
* \brief Handling EXIF tags
*/
/*
* 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_TAG_H__
#define __EXIF_TAG_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <libexif/exif-ifd.h>
#include <libexif/exif-data-type.h>
/*! EXIF tags */
typedef enum {
EXIF_TAG_INTEROPERABILITY_INDEX = 0x0001,
EXIF_TAG_INTEROPERABILITY_VERSION = 0x0002,
EXIF_TAG_NEW_SUBFILE_TYPE = 0x00fe,
EXIF_TAG_IMAGE_WIDTH = 0x0100,
EXIF_TAG_IMAGE_LENGTH = 0x0101,
EXIF_TAG_BITS_PER_SAMPLE = 0x0102,
EXIF_TAG_COMPRESSION = 0x0103,
EXIF_TAG_PHOTOMETRIC_INTERPRETATION = 0x0106,
EXIF_TAG_FILL_ORDER = 0x010a,
EXIF_TAG_DOCUMENT_NAME = 0x010d,
EXIF_TAG_IMAGE_DESCRIPTION = 0x010e,
EXIF_TAG_MAKE = 0x010f,
EXIF_TAG_MODEL = 0x0110,
EXIF_TAG_STRIP_OFFSETS = 0x0111,
EXIF_TAG_ORIENTATION = 0x0112,
EXIF_TAG_SAMPLES_PER_PIXEL = 0x0115,
EXIF_TAG_ROWS_PER_STRIP = 0x0116,
EXIF_TAG_STRIP_BYTE_COUNTS = 0x0117,
EXIF_TAG_X_RESOLUTION = 0x011a,
EXIF_TAG_Y_RESOLUTION = 0x011b,
EXIF_TAG_PLANAR_CONFIGURATION = 0x011c,
EXIF_TAG_RESOLUTION_UNIT = 0x0128,
EXIF_TAG_TRANSFER_FUNCTION = 0x012d,
EXIF_TAG_SOFTWARE = 0x0131,
EXIF_TAG_DATE_TIME = 0x0132,
EXIF_TAG_ARTIST = 0x013b,
EXIF_TAG_WHITE_POINT = 0x013e,
EXIF_TAG_PRIMARY_CHROMATICITIES = 0x013f,
EXIF_TAG_SUB_IFDS = 0x014a,
EXIF_TAG_TRANSFER_RANGE = 0x0156,
EXIF_TAG_JPEG_PROC = 0x0200,
EXIF_TAG_JPEG_INTERCHANGE_FORMAT = 0x0201,
EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH = 0x0202,
EXIF_TAG_YCBCR_COEFFICIENTS = 0x0211,
EXIF_TAG_YCBCR_SUB_SAMPLING = 0x0212,
EXIF_TAG_YCBCR_POSITIONING = 0x0213,
EXIF_TAG_REFERENCE_BLACK_WHITE = 0x0214,
EXIF_TAG_XML_PACKET = 0x02bc,
EXIF_TAG_RELATED_IMAGE_FILE_FORMAT = 0x1000,
EXIF_TAG_RELATED_IMAGE_WIDTH = 0x1001,
EXIF_TAG_RELATED_IMAGE_LENGTH = 0x1002,
EXIF_TAG_CFA_REPEAT_PATTERN_DIM = 0x828d,
EXIF_TAG_CFA_PATTERN = 0x828e,
EXIF_TAG_BATTERY_LEVEL = 0x828f,
EXIF_TAG_COPYRIGHT = 0x8298,
EXIF_TAG_EXPOSURE_TIME = 0x829a,
EXIF_TAG_FNUMBER = 0x829d,
EXIF_TAG_IPTC_NAA = 0x83bb,
EXIF_TAG_IMAGE_RESOURCES = 0x8649,
EXIF_TAG_EXIF_IFD_POINTER = 0x8769,
EXIF_TAG_INTER_COLOR_PROFILE = 0x8773,
EXIF_TAG_EXPOSURE_PROGRAM = 0x8822,
EXIF_TAG_SPECTRAL_SENSITIVITY = 0x8824,
EXIF_TAG_GPS_INFO_IFD_POINTER = 0x8825,
EXIF_TAG_ISO_SPEED_RATINGS = 0x8827,
EXIF_TAG_OECF = 0x8828,
EXIF_TAG_TIME_ZONE_OFFSET = 0x882a,
EXIF_TAG_EXIF_VERSION = 0x9000,
EXIF_TAG_DATE_TIME_ORIGINAL = 0x9003,
EXIF_TAG_DATE_TIME_DIGITIZED = 0x9004,
EXIF_TAG_COMPONENTS_CONFIGURATION = 0x9101,
EXIF_TAG_COMPRESSED_BITS_PER_PIXEL = 0x9102,
EXIF_TAG_SHUTTER_SPEED_VALUE = 0x9201,
EXIF_TAG_APERTURE_VALUE = 0x9202,
EXIF_TAG_BRIGHTNESS_VALUE = 0x9203,
EXIF_TAG_EXPOSURE_BIAS_VALUE = 0x9204,
EXIF_TAG_MAX_APERTURE_VALUE = 0x9205,
EXIF_TAG_SUBJECT_DISTANCE = 0x9206,
EXIF_TAG_METERING_MODE = 0x9207,
EXIF_TAG_LIGHT_SOURCE = 0x9208,
EXIF_TAG_FLASH = 0x9209,
EXIF_TAG_FOCAL_LENGTH = 0x920a,
EXIF_TAG_SUBJECT_AREA = 0x9214,
EXIF_TAG_TIFF_EP_STANDARD_ID = 0x9216,
EXIF_TAG_MAKER_NOTE = 0x927c,
EXIF_TAG_USER_COMMENT = 0x9286,
EXIF_TAG_SUB_SEC_TIME = 0x9290,
EXIF_TAG_SUB_SEC_TIME_ORIGINAL = 0x9291,
EXIF_TAG_SUB_SEC_TIME_DIGITIZED = 0x9292,
EXIF_TAG_XP_TITLE = 0x9c9b,
EXIF_TAG_XP_COMMENT = 0x9c9c,
EXIF_TAG_XP_AUTHOR = 0x9c9d,
EXIF_TAG_XP_KEYWORDS = 0x9c9e,
EXIF_TAG_XP_SUBJECT = 0x9c9f,
EXIF_TAG_FLASH_PIX_VERSION = 0xa000,
EXIF_TAG_COLOR_SPACE = 0xa001,
EXIF_TAG_PIXEL_X_DIMENSION = 0xa002,
EXIF_TAG_PIXEL_Y_DIMENSION = 0xa003,
EXIF_TAG_RELATED_SOUND_FILE = 0xa004,
EXIF_TAG_INTEROPERABILITY_IFD_POINTER = 0xa005,
EXIF_TAG_FLASH_ENERGY = 0xa20b,
EXIF_TAG_SPATIAL_FREQUENCY_RESPONSE = 0xa20c,
EXIF_TAG_FOCAL_PLANE_X_RESOLUTION = 0xa20e,
EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION = 0xa20f,
EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT = 0xa210,
EXIF_TAG_SUBJECT_LOCATION = 0xa214,
EXIF_TAG_EXPOSURE_INDEX = 0xa215,
EXIF_TAG_SENSING_METHOD = 0xa217,
EXIF_TAG_FILE_SOURCE = 0xa300,
EXIF_TAG_SCENE_TYPE = 0xa301,
EXIF_TAG_NEW_CFA_PATTERN = 0xa302,
EXIF_TAG_CUSTOM_RENDERED = 0xa401,
EXIF_TAG_EXPOSURE_MODE = 0xa402,
EXIF_TAG_WHITE_BALANCE = 0xa403,
EXIF_TAG_DIGITAL_ZOOM_RATIO = 0xa404,
EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM = 0xa405,
EXIF_TAG_SCENE_CAPTURE_TYPE = 0xa406,
EXIF_TAG_GAIN_CONTROL = 0xa407,
EXIF_TAG_CONTRAST = 0xa408,
EXIF_TAG_SATURATION = 0xa409,
EXIF_TAG_SHARPNESS = 0xa40a,
EXIF_TAG_DEVICE_SETTING_DESCRIPTION = 0xa40b,
EXIF_TAG_SUBJECT_DISTANCE_RANGE = 0xa40c,
EXIF_TAG_IMAGE_UNIQUE_ID = 0xa420,
EXIF_TAG_GAMMA = 0xa500,
EXIF_TAG_PRINT_IMAGE_MATCHING = 0xc4a5,
EXIF_TAG_PADDING = 0xea1c
} ExifTag;
/* GPS tags overlap with above ones. */
#define EXIF_TAG_GPS_VERSION_ID 0x0000
#define EXIF_TAG_GPS_LATITUDE_REF 0x0001 /* INTEROPERABILITY_INDEX */
#define EXIF_TAG_GPS_LATITUDE 0x0002 /* INTEROPERABILITY_VERSION */
#define EXIF_TAG_GPS_LONGITUDE_REF 0x0003
#define EXIF_TAG_GPS_LONGITUDE 0x0004
#define EXIF_TAG_GPS_ALTITUDE_REF 0x0005
#define EXIF_TAG_GPS_ALTITUDE 0x0006
#define EXIF_TAG_GPS_TIME_STAMP 0x0007
#define EXIF_TAG_GPS_SATELLITES 0x0008
#define EXIF_TAG_GPS_STATUS 0x0009
#define EXIF_TAG_GPS_MEASURE_MODE 0x000a
#define EXIF_TAG_GPS_DOP 0x000b
#define EXIF_TAG_GPS_SPEED_REF 0x000c
#define EXIF_TAG_GPS_SPEED 0x000d
#define EXIF_TAG_GPS_TRACK_REF 0x000e
#define EXIF_TAG_GPS_TRACK 0x000f
#define EXIF_TAG_GPS_IMG_DIRECTION_REF 0x0010
#define EXIF_TAG_GPS_IMG_DIRECTION 0x0011
#define EXIF_TAG_GPS_MAP_DATUM 0x0012
#define EXIF_TAG_GPS_DEST_LATITUDE_REF 0x0013
#define EXIF_TAG_GPS_DEST_LATITUDE 0x0014
#define EXIF_TAG_GPS_DEST_LONGITUDE_REF 0x0015
#define EXIF_TAG_GPS_DEST_LONGITUDE 0x0016
#define EXIF_TAG_GPS_DEST_BEARING_REF 0x0017
#define EXIF_TAG_GPS_DEST_BEARING 0x0018
#define EXIF_TAG_GPS_DEST_DISTANCE_REF 0x0019
#define EXIF_TAG_GPS_DEST_DISTANCE 0x001a
#define EXIF_TAG_GPS_PROCESSING_METHOD 0x001b
#define EXIF_TAG_GPS_AREA_INFORMATION 0x001c
#define EXIF_TAG_GPS_DATE_STAMP 0x001d
#define EXIF_TAG_GPS_DIFFERENTIAL 0x001e
/*! What level of support a tag enjoys in the EXIF standard */
typedef enum {
/*! The meaning of this tag is unknown */
EXIF_SUPPORT_LEVEL_UNKNOWN = 0,
/*! This tag is not allowed in the given IFD */
EXIF_SUPPORT_LEVEL_NOT_RECORDED,
/*! This tag is mandatory in the given IFD */
EXIF_SUPPORT_LEVEL_MANDATORY,
/*! This tag is optional in the given IFD */
EXIF_SUPPORT_LEVEL_OPTIONAL
} ExifSupportLevel;
/*! Return the tag ID given its unique textual name.
*
* \param[in] name tag name
* \return tag ID, or 0 if tag not found
* \note The tag not found value cannot be distinguished from a legitimate
* tag number 0.
*/
ExifTag exif_tag_from_name (const char *name);
/*! Return a textual name of the given tag when found in the given IFD. The
* name is a short, unique, non-localized text string containing only
* US-ASCII alphanumeric characters.
*
* \param[in] tag EXIF tag
* \param[in] ifd IFD
* \return textual name of the tag, or NULL if the tag is unknown
*/
const char *exif_tag_get_name_in_ifd (ExifTag tag, ExifIfd ifd);
/*! Return a textual title of the given tag when found in the given IFD.
* The title is a short, localized description of the tag.
*
* \param[in] tag EXIF tag
* \param[in] ifd IFD
* \return textual title of the tag, or NULL if the tag is unknown
*/
const char *exif_tag_get_title_in_ifd (ExifTag tag, ExifIfd ifd);
/*! Return a verbose textual description of the given tag when found in the
* given IFD. The description is a verbose, localized description of the tag.
*
* \param[in] tag EXIF tag
* \param[in] ifd IFD
* \return textual description of the tag, or NULL if the tag is unknown
*/
const char *exif_tag_get_description_in_ifd (ExifTag tag, ExifIfd ifd);
/*! Return whether the given tag is mandatory or not in the given IFD and
* data type according to the EXIF specification. If the IFD given is
* EXIF_IFD_COUNT, the result is EXIF_SUPPORT_LEVEL_UNKNOWN. If the data
* type is EXIF_DATA_TYPE_UNKNOWN, the result is
* EXIF_SUPPORT_LEVEL_UNKNOWN unless the support level is the same for
* all data types.
*
* \param[in] tag EXIF tag
* \param[in] ifd IFD or EXIF_IFD_COUNT
* \param[in] t data type or EXIF_DATA_TYPE_UNKNOWN
* \return the level of support for this tag
*/
ExifSupportLevel exif_tag_get_support_level_in_ifd (ExifTag tag, ExifIfd ifd,
ExifDataType t);
/* Don't use these functions. They are here for compatibility only. */
/*! \deprecated Use #exif_tag_get_name_in_ifd instead */
const char *exif_tag_get_name (ExifTag tag);
/*! \deprecated Use #exif_tag_get_title_in_ifd instead */
const char *exif_tag_get_title (ExifTag tag);
/*! \deprecated Use #exif_tag_get_description_in_ifd instead */
const char *exif_tag_get_description (ExifTag tag);
/* For now, do not use these functions. */
/*! \internal */
ExifTag exif_tag_table_get_tag (unsigned int n);
/*! \internal */
const char *exif_tag_table_get_name (unsigned int n);
/*! \internal */
unsigned int exif_tag_table_count (void);
/* Don't use these definitions. They are here for compatibility only. */
/*! \deprecated Use EXIF_TAG_PRINT_IMAGE_MATCHING instead. */
#define EXIF_TAG_UNKNOWN_C4A5 EXIF_TAG_PRINT_IMAGE_MATCHING
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __EXIF_TAG_H__ */