/*! \file exif-tag.h
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* \brief Handling EXIF tags
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*/
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/*
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* Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*/
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#ifndef __EXIF_TAG_H__
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#define __EXIF_TAG_H__
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#include <libexif/exif-ifd.h>
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#include <libexif/exif-data-type.h>
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/*! EXIF tags */
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typedef enum {
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EXIF_TAG_INTEROPERABILITY_INDEX = 0x0001,
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EXIF_TAG_INTEROPERABILITY_VERSION = 0x0002,
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EXIF_TAG_NEW_SUBFILE_TYPE = 0x00fe,
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EXIF_TAG_IMAGE_WIDTH = 0x0100,
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EXIF_TAG_IMAGE_LENGTH = 0x0101,
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EXIF_TAG_BITS_PER_SAMPLE = 0x0102,
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EXIF_TAG_COMPRESSION = 0x0103,
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EXIF_TAG_PHOTOMETRIC_INTERPRETATION = 0x0106,
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EXIF_TAG_FILL_ORDER = 0x010a,
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EXIF_TAG_DOCUMENT_NAME = 0x010d,
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EXIF_TAG_IMAGE_DESCRIPTION = 0x010e,
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EXIF_TAG_MAKE = 0x010f,
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EXIF_TAG_MODEL = 0x0110,
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EXIF_TAG_STRIP_OFFSETS = 0x0111,
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EXIF_TAG_ORIENTATION = 0x0112,
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EXIF_TAG_SAMPLES_PER_PIXEL = 0x0115,
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EXIF_TAG_ROWS_PER_STRIP = 0x0116,
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EXIF_TAG_STRIP_BYTE_COUNTS = 0x0117,
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EXIF_TAG_X_RESOLUTION = 0x011a,
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EXIF_TAG_Y_RESOLUTION = 0x011b,
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EXIF_TAG_PLANAR_CONFIGURATION = 0x011c,
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EXIF_TAG_RESOLUTION_UNIT = 0x0128,
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EXIF_TAG_TRANSFER_FUNCTION = 0x012d,
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EXIF_TAG_SOFTWARE = 0x0131,
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EXIF_TAG_DATE_TIME = 0x0132,
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EXIF_TAG_ARTIST = 0x013b,
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EXIF_TAG_WHITE_POINT = 0x013e,
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EXIF_TAG_PRIMARY_CHROMATICITIES = 0x013f,
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EXIF_TAG_SUB_IFDS = 0x014a,
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EXIF_TAG_TRANSFER_RANGE = 0x0156,
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EXIF_TAG_JPEG_PROC = 0x0200,
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EXIF_TAG_JPEG_INTERCHANGE_FORMAT = 0x0201,
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EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH = 0x0202,
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EXIF_TAG_YCBCR_COEFFICIENTS = 0x0211,
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EXIF_TAG_YCBCR_SUB_SAMPLING = 0x0212,
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EXIF_TAG_YCBCR_POSITIONING = 0x0213,
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EXIF_TAG_REFERENCE_BLACK_WHITE = 0x0214,
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EXIF_TAG_XML_PACKET = 0x02bc,
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EXIF_TAG_RELATED_IMAGE_FILE_FORMAT = 0x1000,
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EXIF_TAG_RELATED_IMAGE_WIDTH = 0x1001,
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EXIF_TAG_RELATED_IMAGE_LENGTH = 0x1002,
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EXIF_TAG_CFA_REPEAT_PATTERN_DIM = 0x828d,
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EXIF_TAG_CFA_PATTERN = 0x828e,
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EXIF_TAG_BATTERY_LEVEL = 0x828f,
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EXIF_TAG_COPYRIGHT = 0x8298,
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EXIF_TAG_EXPOSURE_TIME = 0x829a,
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EXIF_TAG_FNUMBER = 0x829d,
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EXIF_TAG_IPTC_NAA = 0x83bb,
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EXIF_TAG_IMAGE_RESOURCES = 0x8649,
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EXIF_TAG_EXIF_IFD_POINTER = 0x8769,
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EXIF_TAG_INTER_COLOR_PROFILE = 0x8773,
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EXIF_TAG_EXPOSURE_PROGRAM = 0x8822,
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EXIF_TAG_SPECTRAL_SENSITIVITY = 0x8824,
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EXIF_TAG_GPS_INFO_IFD_POINTER = 0x8825,
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EXIF_TAG_ISO_SPEED_RATINGS = 0x8827,
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EXIF_TAG_OECF = 0x8828,
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EXIF_TAG_TIME_ZONE_OFFSET = 0x882a,
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EXIF_TAG_EXIF_VERSION = 0x9000,
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EXIF_TAG_DATE_TIME_ORIGINAL = 0x9003,
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EXIF_TAG_DATE_TIME_DIGITIZED = 0x9004,
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EXIF_TAG_COMPONENTS_CONFIGURATION = 0x9101,
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EXIF_TAG_COMPRESSED_BITS_PER_PIXEL = 0x9102,
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EXIF_TAG_SHUTTER_SPEED_VALUE = 0x9201,
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EXIF_TAG_APERTURE_VALUE = 0x9202,
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EXIF_TAG_BRIGHTNESS_VALUE = 0x9203,
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EXIF_TAG_EXPOSURE_BIAS_VALUE = 0x9204,
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EXIF_TAG_MAX_APERTURE_VALUE = 0x9205,
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EXIF_TAG_SUBJECT_DISTANCE = 0x9206,
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EXIF_TAG_METERING_MODE = 0x9207,
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EXIF_TAG_LIGHT_SOURCE = 0x9208,
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EXIF_TAG_FLASH = 0x9209,
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EXIF_TAG_FOCAL_LENGTH = 0x920a,
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EXIF_TAG_SUBJECT_AREA = 0x9214,
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EXIF_TAG_TIFF_EP_STANDARD_ID = 0x9216,
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EXIF_TAG_MAKER_NOTE = 0x927c,
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EXIF_TAG_USER_COMMENT = 0x9286,
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EXIF_TAG_SUB_SEC_TIME = 0x9290,
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EXIF_TAG_SUB_SEC_TIME_ORIGINAL = 0x9291,
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EXIF_TAG_SUB_SEC_TIME_DIGITIZED = 0x9292,
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EXIF_TAG_XP_TITLE = 0x9c9b,
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EXIF_TAG_XP_COMMENT = 0x9c9c,
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EXIF_TAG_XP_AUTHOR = 0x9c9d,
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EXIF_TAG_XP_KEYWORDS = 0x9c9e,
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EXIF_TAG_XP_SUBJECT = 0x9c9f,
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EXIF_TAG_FLASH_PIX_VERSION = 0xa000,
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EXIF_TAG_COLOR_SPACE = 0xa001,
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EXIF_TAG_PIXEL_X_DIMENSION = 0xa002,
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EXIF_TAG_PIXEL_Y_DIMENSION = 0xa003,
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EXIF_TAG_RELATED_SOUND_FILE = 0xa004,
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EXIF_TAG_INTEROPERABILITY_IFD_POINTER = 0xa005,
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EXIF_TAG_FLASH_ENERGY = 0xa20b,
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EXIF_TAG_SPATIAL_FREQUENCY_RESPONSE = 0xa20c,
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EXIF_TAG_FOCAL_PLANE_X_RESOLUTION = 0xa20e,
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EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION = 0xa20f,
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EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT = 0xa210,
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EXIF_TAG_SUBJECT_LOCATION = 0xa214,
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EXIF_TAG_EXPOSURE_INDEX = 0xa215,
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EXIF_TAG_SENSING_METHOD = 0xa217,
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EXIF_TAG_FILE_SOURCE = 0xa300,
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EXIF_TAG_SCENE_TYPE = 0xa301,
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EXIF_TAG_NEW_CFA_PATTERN = 0xa302,
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EXIF_TAG_CUSTOM_RENDERED = 0xa401,
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EXIF_TAG_EXPOSURE_MODE = 0xa402,
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EXIF_TAG_WHITE_BALANCE = 0xa403,
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EXIF_TAG_DIGITAL_ZOOM_RATIO = 0xa404,
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EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM = 0xa405,
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EXIF_TAG_SCENE_CAPTURE_TYPE = 0xa406,
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EXIF_TAG_GAIN_CONTROL = 0xa407,
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EXIF_TAG_CONTRAST = 0xa408,
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EXIF_TAG_SATURATION = 0xa409,
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EXIF_TAG_SHARPNESS = 0xa40a,
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EXIF_TAG_DEVICE_SETTING_DESCRIPTION = 0xa40b,
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EXIF_TAG_SUBJECT_DISTANCE_RANGE = 0xa40c,
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EXIF_TAG_IMAGE_UNIQUE_ID = 0xa420,
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EXIF_TAG_GAMMA = 0xa500,
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EXIF_TAG_PRINT_IMAGE_MATCHING = 0xc4a5,
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EXIF_TAG_PADDING = 0xea1c
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} ExifTag;
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/* GPS tags overlap with above ones. */
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#define EXIF_TAG_GPS_VERSION_ID 0x0000
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#define EXIF_TAG_GPS_LATITUDE_REF 0x0001 /* INTEROPERABILITY_INDEX */
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#define EXIF_TAG_GPS_LATITUDE 0x0002 /* INTEROPERABILITY_VERSION */
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#define EXIF_TAG_GPS_LONGITUDE_REF 0x0003
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#define EXIF_TAG_GPS_LONGITUDE 0x0004
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#define EXIF_TAG_GPS_ALTITUDE_REF 0x0005
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#define EXIF_TAG_GPS_ALTITUDE 0x0006
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#define EXIF_TAG_GPS_TIME_STAMP 0x0007
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#define EXIF_TAG_GPS_SATELLITES 0x0008
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#define EXIF_TAG_GPS_STATUS 0x0009
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#define EXIF_TAG_GPS_MEASURE_MODE 0x000a
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#define EXIF_TAG_GPS_DOP 0x000b
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#define EXIF_TAG_GPS_SPEED_REF 0x000c
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#define EXIF_TAG_GPS_SPEED 0x000d
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#define EXIF_TAG_GPS_TRACK_REF 0x000e
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#define EXIF_TAG_GPS_TRACK 0x000f
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#define EXIF_TAG_GPS_IMG_DIRECTION_REF 0x0010
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#define EXIF_TAG_GPS_IMG_DIRECTION 0x0011
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#define EXIF_TAG_GPS_MAP_DATUM 0x0012
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#define EXIF_TAG_GPS_DEST_LATITUDE_REF 0x0013
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#define EXIF_TAG_GPS_DEST_LATITUDE 0x0014
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#define EXIF_TAG_GPS_DEST_LONGITUDE_REF 0x0015
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#define EXIF_TAG_GPS_DEST_LONGITUDE 0x0016
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#define EXIF_TAG_GPS_DEST_BEARING_REF 0x0017
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#define EXIF_TAG_GPS_DEST_BEARING 0x0018
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#define EXIF_TAG_GPS_DEST_DISTANCE_REF 0x0019
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#define EXIF_TAG_GPS_DEST_DISTANCE 0x001a
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#define EXIF_TAG_GPS_PROCESSING_METHOD 0x001b
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#define EXIF_TAG_GPS_AREA_INFORMATION 0x001c
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#define EXIF_TAG_GPS_DATE_STAMP 0x001d
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#define EXIF_TAG_GPS_DIFFERENTIAL 0x001e
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/*! What level of support a tag enjoys in the EXIF standard */
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typedef enum {
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/*! The meaning of this tag is unknown */
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EXIF_SUPPORT_LEVEL_UNKNOWN = 0,
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/*! This tag is not allowed in the given IFD */
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EXIF_SUPPORT_LEVEL_NOT_RECORDED,
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/*! This tag is mandatory in the given IFD */
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EXIF_SUPPORT_LEVEL_MANDATORY,
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/*! This tag is optional in the given IFD */
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EXIF_SUPPORT_LEVEL_OPTIONAL
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} ExifSupportLevel;
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/*! Return the tag ID given its unique textual name.
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*
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* \param[in] name tag name
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* \return tag ID, or 0 if tag not found
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* \note The tag not found value cannot be distinguished from a legitimate
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* tag number 0.
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*/
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ExifTag exif_tag_from_name (const char *name);
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/*! Return a textual name of the given tag when found in the given IFD. The
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* name is a short, unique, non-localized text string containing only
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* US-ASCII alphanumeric characters.
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*
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* \param[in] tag EXIF tag
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* \param[in] ifd IFD
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* \return textual name of the tag, or NULL if the tag is unknown
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*/
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const char *exif_tag_get_name_in_ifd (ExifTag tag, ExifIfd ifd);
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/*! Return a textual title of the given tag when found in the given IFD.
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* The title is a short, localized description of the tag.
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*
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* \param[in] tag EXIF tag
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* \param[in] ifd IFD
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* \return textual title of the tag, or NULL if the tag is unknown
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*/
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const char *exif_tag_get_title_in_ifd (ExifTag tag, ExifIfd ifd);
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/*! Return a verbose textual description of the given tag when found in the
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* given IFD. The description is a verbose, localized description of the tag.
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*
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* \param[in] tag EXIF tag
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* \param[in] ifd IFD
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* \return textual description of the tag, or NULL if the tag is unknown
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*/
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const char *exif_tag_get_description_in_ifd (ExifTag tag, ExifIfd ifd);
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/*! Return whether the given tag is mandatory or not in the given IFD and
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* data type according to the EXIF specification. If the IFD given is
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* EXIF_IFD_COUNT, the result is EXIF_SUPPORT_LEVEL_UNKNOWN. If the data
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* type is EXIF_DATA_TYPE_UNKNOWN, the result is
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* EXIF_SUPPORT_LEVEL_UNKNOWN unless the support level is the same for
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* all data types.
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*
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* \param[in] tag EXIF tag
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* \param[in] ifd IFD or EXIF_IFD_COUNT
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* \param[in] t data type or EXIF_DATA_TYPE_UNKNOWN
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* \return the level of support for this tag
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*/
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ExifSupportLevel exif_tag_get_support_level_in_ifd (ExifTag tag, ExifIfd ifd,
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ExifDataType t);
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/* Don't use these functions. They are here for compatibility only. */
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/*! \deprecated Use #exif_tag_get_name_in_ifd instead */
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const char *exif_tag_get_name (ExifTag tag);
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/*! \deprecated Use #exif_tag_get_title_in_ifd instead */
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const char *exif_tag_get_title (ExifTag tag);
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/*! \deprecated Use #exif_tag_get_description_in_ifd instead */
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const char *exif_tag_get_description (ExifTag tag);
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/* For now, do not use these functions. */
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/*! \internal */
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ExifTag exif_tag_table_get_tag (unsigned int n);
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/*! \internal */
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const char *exif_tag_table_get_name (unsigned int n);
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/*! \internal */
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unsigned int exif_tag_table_count (void);
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/* Don't use these definitions. They are here for compatibility only. */
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/*! \deprecated Use EXIF_TAG_PRINT_IMAGE_MATCHING instead. */
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#define EXIF_TAG_UNKNOWN_C4A5 EXIF_TAG_PRINT_IMAGE_MATCHING
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __EXIF_TAG_H__ */
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