/* exif-tag.c
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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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#include <config.h>
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#include <libexif/exif-tag.h>
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#include <libexif/i18n.h>
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#include <stdlib.h>
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#include <string.h>
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#define ESL_NNNN { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED }
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#define ESL_OOOO { EXIF_SUPPORT_LEVEL_OPTIONAL, EXIF_SUPPORT_LEVEL_OPTIONAL, EXIF_SUPPORT_LEVEL_OPTIONAL, EXIF_SUPPORT_LEVEL_OPTIONAL }
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#define ESL_MMMN { EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_NOT_RECORDED }
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#define ESL_MMMM { EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_MANDATORY }
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#define ESL_OMON { EXIF_SUPPORT_LEVEL_OPTIONAL, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_OPTIONAL, EXIF_SUPPORT_LEVEL_NOT_RECORDED }
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#define ESL_NNOO { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_OPTIONAL, EXIF_SUPPORT_LEVEL_OPTIONAL }
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#define ESL_NNMN { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_NOT_RECORDED }
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#define ESL_NNMM { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_MANDATORY }
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#define ESL_NNNM { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_MANDATORY }
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#define ESL_NNNO { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_OPTIONAL }
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#define ESL_GPS { ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN }
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/*!
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* Table giving information about each EXIF tag.
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* There may be more than one entry with the same tag value because some tags
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* have different meanings depending on the IFD in which they appear.
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* When there are such duplicate entries, there must be no overlap in their
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* support levels.
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* The entries MUST be sorted in tag order.
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* The name and title are mandatory, but the description may be an empty
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* string. None of the entries may be NULL except the final array terminator.
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*/
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static const struct TagEntry {
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/*! Tag ID. There may be duplicate tags when the same number is used for
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* different meanings in different IFDs. */
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ExifTag tag;
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const char *name;
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const char *title;
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const char *description;
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/*! indexed by the types [ExifIfd][ExifDataType] */
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ExifSupportLevel esl[EXIF_IFD_COUNT][EXIF_DATA_TYPE_COUNT];
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} ExifTagTable[] = {
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#ifndef NO_VERBOSE_TAG_STRINGS
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{EXIF_TAG_GPS_VERSION_ID, "GPSVersionID", N_("GPS Tag Version"),
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N_("Indicates the version of <GPSInfoIFD>. The version is given "
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"as 2.0.0.0. This tag is mandatory when <GPSInfo> tag is "
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"present. (Note: The <GPSVersionID> tag is given in bytes, "
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"unlike the <ExifVersion> tag. When the version is "
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"2.0.0.0, the tag value is 02000000.H)."), ESL_GPS},
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{EXIF_TAG_INTEROPERABILITY_INDEX, "InteroperabilityIndex",
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N_("Interoperability Index"),
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N_("Indicates the identification of the Interoperability rule. "
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"Use \"R98\" for stating ExifR98 Rules. Four bytes used "
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"including the termination code (NULL). see the separate "
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"volume of Recommended Exif Interoperability Rules (ExifR98) "
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"for other tags used for ExifR98."),
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{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_OOOO } },
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{EXIF_TAG_GPS_LATITUDE_REF, "GPSLatitudeRef", N_("North or South Latitude"),
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N_("Indicates whether the latitude is north or south latitude. The "
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"ASCII value 'N' indicates north latitude, and 'S' is south "
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"latitude."), ESL_GPS},
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{EXIF_TAG_INTEROPERABILITY_VERSION, "InteroperabilityVersion",
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N_("Interoperability Version"), "",
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{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_OOOO } },
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{EXIF_TAG_GPS_LATITUDE, "GPSLatitude", N_("Latitude"),
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N_("Indicates the latitude. The latitude is expressed as three "
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"RATIONAL values giving the degrees, minutes, and seconds, "
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"respectively. When degrees, minutes and seconds are expressed, "
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"the format is dd/1,mm/1,ss/1. When degrees and minutes are used "
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"and, for example, fractions of minutes are given up to two "
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"decimal places, the format is dd/1,mmmm/100,0/1."),
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ESL_GPS},
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{EXIF_TAG_GPS_LONGITUDE_REF, "GPSLongitudeRef", N_("East or West Longitude"),
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N_("Indicates whether the longitude is east or west longitude. "
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"ASCII 'E' indicates east longitude, and 'W' is west "
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"longitude."), ESL_GPS},
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{EXIF_TAG_GPS_LONGITUDE, "GPSLongitude", N_("Longitude"),
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N_("Indicates the longitude. The longitude is expressed as three "
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"RATIONAL values giving the degrees, minutes, and seconds, "
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"respectively. When degrees, minutes and seconds are expressed, "
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"the format is ddd/1,mm/1,ss/1. When degrees and minutes are "
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"used and, for example, fractions of minutes are given up to "
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"two decimal places, the format is ddd/1,mmmm/100,0/1."),
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ESL_GPS},
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{EXIF_TAG_GPS_ALTITUDE_REF, "GPSAltitudeRef", N_("Altitude Reference"),
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N_("Indicates the altitude used as the reference altitude. If the "
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"reference is sea level and the altitude is above sea level, 0 "
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"is given. If the altitude is below sea level, a value of 1 is given "
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"and the altitude is indicated as an absolute value in the "
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"GSPAltitude tag. The reference unit is meters. Note that this tag "
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"is BYTE type, unlike other reference tags."), ESL_GPS},
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{EXIF_TAG_GPS_ALTITUDE, "GPSAltitude", N_("Altitude"),
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N_("Indicates the altitude based on the reference in GPSAltitudeRef. "
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"Altitude is expressed as one RATIONAL value. The reference unit "
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"is meters."), ESL_GPS},
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{EXIF_TAG_GPS_TIME_STAMP, "GPSTimeStamp", N_("GPS Time (Atomic Clock)"),
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N_("Indicates the time as UTC (Coordinated Universal Time). "
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"TimeStamp is expressed as three RATIONAL values giving "
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"the hour, minute, and second."), ESL_GPS},
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{EXIF_TAG_GPS_SATELLITES, "GPSSatellites", N_("GPS Satellites"),
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N_("Indicates the GPS satellites used for measurements. This "
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"tag can be used to describe the number of satellites, their ID "
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"number, angle of elevation, azimuth, SNR and other information "
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"in ASCII notation. The format is not specified. If the GPS "
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"receiver is incapable of taking measurements, value of the tag "
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"shall be set to NULL."), ESL_GPS},
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{EXIF_TAG_GPS_STATUS, "GPSStatus", N_("GPS Receiver Status"),
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N_("Indicates the status of the GPS receiver when the image is "
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"recorded. 'A' means measurement is in progress, and 'V' means "
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"the measurement is Interoperability."), ESL_GPS},
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{EXIF_TAG_GPS_MEASURE_MODE, "GPSMeasureMode", N_("GPS Measurement Mode"),
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N_("Indicates the GPS measurement mode. '2' means "
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"two-dimensional measurement and '3' means three-dimensional "
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"measurement is in progress."), ESL_GPS},
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{EXIF_TAG_GPS_DOP, "GPSDOP", N_("Measurement Precision"),
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N_("Indicates the GPS DOP (data degree of precision). An HDOP "
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"value is written during two-dimensional measurement, and PDOP "
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"during three-dimensional measurement."), ESL_GPS},
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{EXIF_TAG_GPS_SPEED_REF, "GPSSpeedRef", N_("Speed Unit"),
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N_("Indicates the unit used to express the GPS receiver speed "
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"of movement. 'K', 'M' and 'N' represent kilometers per hour, "
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"miles per hour, and knots."), ESL_GPS},
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{EXIF_TAG_GPS_SPEED, "GPSSpeed", N_("Speed of GPS Receiver"),
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N_("Indicates the speed of GPS receiver movement."), ESL_GPS},
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{EXIF_TAG_GPS_TRACK_REF, "GPSTrackRef", N_("Reference for direction of movement"),
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N_("Indicates the reference for giving the direction of GPS "
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"receiver movement. 'T' denotes true direction and 'M' is "
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"magnetic direction."), ESL_GPS},
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{EXIF_TAG_GPS_TRACK, "GPSTrack", N_("Direction of Movement"),
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N_("Indicates the direction of GPS receiver movement. The range "
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"of values is from 0.00 to 359.99."), ESL_GPS},
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{EXIF_TAG_GPS_IMG_DIRECTION_REF, "GPSImgDirectionRef", N_("GPS Image Direction Reference"),
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N_("Indicates the reference for giving the direction of the image when it is captured. "
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"'T' denotes true direction and 'M' is magnetic direction."), ESL_GPS},
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{EXIF_TAG_GPS_IMG_DIRECTION, "GPSImgDirection", N_("GPS Image Direction"),
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N_("Indicates the direction of the image when it was captured. The range of values is "
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"from 0.00 to 359.99."), ESL_GPS},
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{EXIF_TAG_GPS_MAP_DATUM, "GPSMapDatum", N_("Geodetic Survey Data Used"),
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N_("Indicates the geodetic survey data used by the GPS "
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"receiver. If the survey data is restricted to Japan, the value "
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"of this tag is 'TOKYO' or 'WGS-84'. If a GPS Info tag is "
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"recorded, it is strongly recommended that this tag be recorded."), ESL_GPS},
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{EXIF_TAG_GPS_DEST_LATITUDE_REF, "GPSDestLatitudeRef", N_("Reference For Latitude of Destination"),
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N_("Indicates whether the latitude of the destination point is "
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"north or south latitude. The ASCII value 'N' indicates north "
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"latitude, and 'S' is south latitude."), ESL_GPS},
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{EXIF_TAG_GPS_DEST_LATITUDE, "GPSDestLatitude", N_("Latitude of Destination"),
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N_("Indicates the latitude of the destination point. The "
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"latitude is expressed as three RATIONAL values giving the "
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"degrees, minutes, and seconds, respectively. If latitude is "
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"expressed as degrees, minutes and seconds, a typical format "
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"would be dd/1,mm/1,ss/1. When degrees and minutes are used and, "
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"for example, fractions of minutes are given up to two decimal "
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"places, the format would be dd/1,mmmm/100,0/1."), ESL_GPS},
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{EXIF_TAG_GPS_DEST_LONGITUDE_REF, "GPSDestLongitudeRef", N_("Reference for Longitude of Destination"),
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N_("Indicates whether the longitude of the destination point is "
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"east or west longitude. ASCII 'E' indicates east longitude, and "
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"'W' is west longitude."), ESL_GPS},
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{EXIF_TAG_GPS_DEST_LONGITUDE, "GPSDestLongitude", N_("Longitude of Destination"),
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N_("Indicates the longitude of the destination point. The "
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"longitude is expressed as three RATIONAL values giving the "
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"degrees, minutes, and seconds, respectively. If longitude is "
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"expressed as degrees, minutes and seconds, a typical format "
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"would be ddd/1,mm/1,ss/1. When degrees and minutes are used "
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"and, for example, fractions of minutes are given up to two "
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"decimal places, the format would be ddd/1,mmmm/100,0/1."),
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ESL_GPS},
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{EXIF_TAG_GPS_DEST_BEARING_REF, "GPSDestBearingRef", N_("Reference for Bearing of Destination"),
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N_("Indicates the reference used for giving the bearing to "
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"the destination point. 'T' denotes true direction and 'M' is "
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"magnetic direction."), ESL_GPS},
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{EXIF_TAG_GPS_DEST_BEARING, "GPSDestBearing", N_("Bearing of Destination"),
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N_("Indicates the bearing to the destination point. The range "
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"of values is from 0.00 to 359.99."), ESL_GPS},
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{EXIF_TAG_GPS_DEST_DISTANCE_REF, "GPSDestDistanceRef", N_("Reference for Distance to Destination"),
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N_("Indicates the unit used to express the distance to the "
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"destination point. 'K', 'M' and 'N' represent kilometers, miles "
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"and nautical miles."), ESL_GPS},
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{EXIF_TAG_GPS_DEST_DISTANCE, "GPSDestDistance", N_("Distance to Destination"),
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N_("Indicates the distance to the destination point."), ESL_GPS},
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{EXIF_TAG_GPS_PROCESSING_METHOD, "GPSProcessingMethod", N_("Name of GPS Processing Method"),
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N_("A character string recording the name of the method used "
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"for location finding. The first byte indicates the character "
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"code used, and this is followed by the name "
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"of the method. Since the Type is not ASCII, NULL termination is "
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"not necessary."), ESL_GPS},
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{EXIF_TAG_GPS_AREA_INFORMATION, "GPSAreaInformation", N_("Name of GPS Area"),
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N_("A character string recording the name of the GPS area. The "
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"first byte indicates the character code used, "
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"and this is followed by the name of the GPS area. Since "
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"the Type is not ASCII, NULL termination is not necessary."), ESL_GPS},
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{EXIF_TAG_GPS_DATE_STAMP, "GPSDateStamp", N_("GPS Date"),
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N_("A character string recording date and time information "
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"relative to UTC (Coordinated Universal Time). The format is "
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"\"YYYY:MM:DD\". The length of the string is 11 bytes including "
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"NULL."), ESL_GPS},
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{EXIF_TAG_GPS_DIFFERENTIAL, "GPSDifferential", N_("GPS Differential Correction"),
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N_("Indicates whether differential correction is applied to the "
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"GPS receiver."), ESL_GPS},
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/* Not in EXIF 2.2 */
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{EXIF_TAG_NEW_SUBFILE_TYPE, "NewSubfileType",
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N_("New Subfile Type"), N_("A general indication of the kind of data "
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"contained in this subfile.")},
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{EXIF_TAG_IMAGE_WIDTH, "ImageWidth", N_("Image Width"),
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N_("The number of columns of image data, equal to the number of "
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"pixels per row. In JPEG compressed data a JPEG marker is "
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"used instead of this tag."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_IMAGE_LENGTH, "ImageLength", N_("Image Length"),
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N_("The number of rows of image data. In JPEG compressed data a "
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"JPEG marker is used instead of this tag."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_BITS_PER_SAMPLE, "BitsPerSample", N_("Bits per Sample"),
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N_("The number of bits per image component. In this standard each "
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"component of the image is 8 bits, so the value for this "
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"tag is 8. See also <SamplesPerPixel>. In JPEG compressed data "
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"a JPEG marker is used instead of this tag."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_COMPRESSION, "Compression", N_("Compression"),
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N_("The compression scheme used for the image data. When a "
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"primary image is JPEG compressed, this designation is "
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"not necessary and is omitted. When thumbnails use JPEG "
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"compression, this tag value is set to 6."),
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{ ESL_MMMN, ESL_MMMM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_PHOTOMETRIC_INTERPRETATION, "PhotometricInterpretation",
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N_("Photometric Interpretation"),
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N_("The pixel composition. In JPEG compressed data a JPEG "
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"marker is used instead of this tag."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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/* Not in EXIF 2.2 */
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{EXIF_TAG_FILL_ORDER, "FillOrder", N_("Fill Order"), ""},
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/* Not in EXIF 2.2 */
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{EXIF_TAG_DOCUMENT_NAME, "DocumentName", N_("Document Name"), ""},
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{EXIF_TAG_IMAGE_DESCRIPTION, "ImageDescription",
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N_("Image Description"),
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N_("A character string giving the title of the image. It may be "
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"a comment such as \"1988 company picnic\" or "
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"the like. Two-bytes character codes cannot be used. "
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"When a 2-bytes code is necessary, the Exif Private tag "
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"<UserComment> is to be used."),
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{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_MAKE, "Make", N_("Manufacturer"),
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N_("The manufacturer of the recording "
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"equipment. This is the manufacturer of the DSC, scanner, "
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"video digitizer or other equipment that generated the "
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"image. When the field is left blank, it is treated as "
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"unknown."),
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{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_MODEL, "Model", N_("Model"),
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N_("The model name or model number of the equipment. This is the "
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"model name or number of the DSC, scanner, video digitizer "
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"or other equipment that generated the image. When the field "
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"is left blank, it is treated as unknown."),
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{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_STRIP_OFFSETS, "StripOffsets", N_("Strip Offsets"),
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N_("For each strip, the byte offset of that strip. It is "
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"recommended that this be selected so the number of strip "
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"bytes does not exceed 64 Kbytes. With JPEG compressed "
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"data this designation is not needed and is omitted. See also "
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"<RowsPerStrip> and <StripByteCounts>."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_ORIENTATION, "Orientation", N_("Orientation"),
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N_("The image orientation viewed in terms of rows and columns."),
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{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_SAMPLES_PER_PIXEL, "SamplesPerPixel",
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N_("Samples per Pixel"),
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N_("The number of components per pixel. Since this standard applies "
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"to RGB and YCbCr images, the value set for this tag is 3. "
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"In JPEG compressed data a JPEG marker is used instead of this "
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"tag."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_ROWS_PER_STRIP, "RowsPerStrip", N_("Rows per Strip"),
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N_("The number of rows per strip. This is the number of rows "
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"in the image of one strip when an image is divided into "
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"strips. With JPEG compressed data this designation is not "
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"needed and is omitted. See also <StripOffsets> and "
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"<StripByteCounts>."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_STRIP_BYTE_COUNTS, "StripByteCounts", N_("Strip Byte Count"),
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N_("The total number of bytes in each strip. With JPEG compressed "
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"data this designation is not needed and is omitted."),
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{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_X_RESOLUTION, "XResolution", N_("X-Resolution"),
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N_("The number of pixels per <ResolutionUnit> in the <ImageWidth> "
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"direction. When the image resolution is unknown, 72 [dpi] "
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"is designated."),
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{ ESL_MMMM, ESL_MMMM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_Y_RESOLUTION, "YResolution", N_("Y-Resolution"),
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N_("The number of pixels per <ResolutionUnit> in the <ImageLength> "
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"direction. The same value as <XResolution> is designated."),
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{ ESL_MMMM, ESL_MMMM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_PLANAR_CONFIGURATION, "PlanarConfiguration",
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N_("Planar Configuration"),
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N_("Indicates whether pixel components are recorded in a chunky "
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"or planar format. In JPEG compressed files a JPEG marker "
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"is used instead of this tag. If this field does not exist, "
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"the TIFF default of 1 (chunky) is assumed."),
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{ ESL_OMON, ESL_OMON, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_RESOLUTION_UNIT, "ResolutionUnit", N_("Resolution Unit"),
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N_("The unit for measuring <XResolution> and <YResolution>. The same "
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"unit is used for both <XResolution> and <YResolution>. If "
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"the image resolution is unknown, 2 (inches) is designated."),
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{ ESL_MMMM, ESL_MMMM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_TRANSFER_FUNCTION, "TransferFunction",
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N_("Transfer Function"),
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N_("A transfer function for the image, described in tabular style. "
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"Normally this tag is not necessary, since color space is "
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"specified in the color space information tag (<ColorSpace>)."),
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{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_SOFTWARE, "Software", N_("Software"),
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N_("This tag records the name and version of the software or "
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"firmware of the camera or image input device used to "
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"generate the image. The detailed format is not specified, but "
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"it is recommended that the example shown below be "
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"followed. When the field is left blank, it is treated as "
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"unknown."),
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{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_DATE_TIME, "DateTime", N_("Date and Time"),
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N_("The date and time of image creation. In this standard "
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"(EXIF-2.1) it is the date and time the file was changed."),
|
{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_ARTIST, "Artist", N_("Artist"),
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N_("This tag records the name of the camera owner, photographer or "
|
"image creator. The detailed format is not specified, but it is "
|
"recommended that the information be written as in the example "
|
"below for ease of Interoperability. When the field is "
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"left blank, it is treated as unknown."),
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{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
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{EXIF_TAG_WHITE_POINT, "WhitePoint", N_("White Point"),
|
N_("The chromaticity of the white point of the image. Normally "
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"this tag is not necessary, since color space is specified "
|
"in the color space information tag (<ColorSpace>)."),
|
{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_PRIMARY_CHROMATICITIES, "PrimaryChromaticities",
|
N_("Primary Chromaticities"),
|
N_("The chromaticity of the three primary colors of the image. "
|
"Normally this tag is not necessary, since color space is "
|
"specified in the color space information tag (<ColorSpace>)."),
|
{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_SUB_IFDS, "SubIFDs", "SubIFD Offsets", N_("Defined by Adobe Corporation "
|
"to enable TIFF Trees within a TIFF file.")},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_TRANSFER_RANGE, "TransferRange", N_("Transfer Range"), ""},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_JPEG_PROC, "JPEGProc", "JPEGProc", ""},
|
{EXIF_TAG_JPEG_INTERCHANGE_FORMAT, "JPEGInterchangeFormat",
|
N_("JPEG Interchange Format"),
|
N_("The offset to the start byte (SOI) of JPEG compressed "
|
"thumbnail data. This is not used for primary image "
|
"JPEG data."),
|
{ ESL_NNNN, ESL_NNNM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH,
|
"JPEGInterchangeFormatLength", N_("JPEG Interchange Format Length"),
|
N_("The number of bytes of JPEG compressed thumbnail data. This "
|
"is not used for primary image JPEG data. JPEG thumbnails "
|
"are not divided but are recorded as a continuous JPEG "
|
"bitstream from SOI to EOI. Appn and COM markers should "
|
"not be recorded. Compressed thumbnails must be recorded in no "
|
"more than 64 Kbytes, including all other data to be "
|
"recorded in APP1."),
|
{ ESL_NNNN, ESL_NNNM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_YCBCR_COEFFICIENTS, "YCbCrCoefficients",
|
N_("YCbCr Coefficients"),
|
N_("The matrix coefficients for transformation from RGB to YCbCr "
|
"image data. No default is given in TIFF; but here the "
|
"value given in \"Color Space Guidelines\", is used "
|
"as the default. The color space is declared in a "
|
"color space information tag, with the default being the value "
|
"that gives the optimal image characteristics "
|
"Interoperability this condition."),
|
{ ESL_NNOO, ESL_NNOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_YCBCR_SUB_SAMPLING, "YCbCrSubSampling",
|
N_("YCbCr Sub-Sampling"),
|
N_("The sampling ratio of chrominance components in relation to the "
|
"luminance component. In JPEG compressed data a JPEG marker "
|
"is used instead of this tag."),
|
{ ESL_NNMN, ESL_NNMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_YCBCR_POSITIONING, "YCbCrPositioning",
|
N_("YCbCr Positioning"),
|
N_("The position of chrominance components in relation to the "
|
"luminance component. This field is designated only for "
|
"JPEG compressed data or uncompressed YCbCr data. The TIFF "
|
"default is 1 (centered); but when Y:Cb:Cr = 4:2:2 it is "
|
"recommended in this standard that 2 (co-sited) be used to "
|
"record data, in order to improve the image quality when viewed "
|
"on TV systems. When this field does not exist, the reader shall "
|
"assume the TIFF default. In the case of Y:Cb:Cr = 4:2:0, the "
|
"TIFF default (centered) is recommended. If the reader "
|
"does not have the capability of supporting both kinds of "
|
"<YCbCrPositioning>, it shall follow the TIFF default regardless "
|
"of the value in this field. It is preferable that readers "
|
"be able to support both centered and co-sited positioning."),
|
{ ESL_NNMM, ESL_NNOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_REFERENCE_BLACK_WHITE, "ReferenceBlackWhite",
|
N_("Reference Black/White"),
|
N_("The reference black point value and reference white point "
|
"value. No defaults are given in TIFF, but the values "
|
"below are given as defaults here. The color space is declared "
|
"in a color space information tag, with the default "
|
"being the value that gives the optimal image characteristics "
|
"Interoperability these conditions."),
|
{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_XML_PACKET, "XMLPacket", N_("XML Packet"), N_("XMP Metadata")},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_RELATED_IMAGE_FILE_FORMAT, "RelatedImageFileFormat",
|
"RelatedImageFileFormat", ""},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_RELATED_IMAGE_WIDTH, "RelatedImageWidth",
|
"RelatedImageWidth", ""},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_RELATED_IMAGE_LENGTH, "RelatedImageLength",
|
"RelatedImageLength", ""},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_CFA_REPEAT_PATTERN_DIM, "CFARepeatPatternDim",
|
"CFARepeatPatternDim", ""},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_CFA_PATTERN, "CFAPattern",
|
N_("CFA Pattern"),
|
N_("Indicates the color filter array (CFA) geometric pattern of the "
|
"image sensor when a one-chip color area sensor is used. "
|
"It does not apply to all sensing methods.")},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_BATTERY_LEVEL, "BatteryLevel", N_("Battery Level"), ""},
|
{EXIF_TAG_COPYRIGHT, "Copyright", N_("Copyright"),
|
N_("Copyright information. In this standard the tag is used to "
|
"indicate both the photographer and editor copyrights. It is "
|
"the copyright notice of the person or organization claiming "
|
"rights to the image. The Interoperability copyright "
|
"statement including date and rights should be written in this "
|
"field; e.g., \"Copyright, John Smith, 19xx. All rights "
|
"reserved.\". In this standard the field records both the "
|
"photographer and editor copyrights, with each recorded in a "
|
"separate part of the statement. When there is a clear "
|
"distinction between the photographer and editor copyrights, "
|
"these are to be written in the order of photographer followed "
|
"by editor copyright, separated by NULL (in this case, "
|
"since the statement also ends with a NULL, there are two NULL "
|
"codes) (see example 1). When only the photographer is given, "
|
"it is terminated by one NULL code (see example 2). When only "
|
"the editor copyright is given, "
|
"the photographer copyright part consists of one space followed "
|
"by a terminating NULL code, then the editor copyright is given "
|
"(see example 3). When the field is left blank, it is treated "
|
"as unknown."),
|
{ ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_EXPOSURE_TIME, "ExposureTime", N_("Exposure Time"),
|
N_("Exposure time, given in seconds (sec)."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FNUMBER, "FNumber", N_("F-Number"),
|
N_("The F number."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_IPTC_NAA, "IPTC/NAA", "IPTC/NAA", ""},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_IMAGE_RESOURCES, "ImageResources", N_("Image Resources Block"), ""},
|
{EXIF_TAG_EXIF_IFD_POINTER, "ExifIfdPointer", "ExifIFDPointer",
|
N_("A pointer to the Exif IFD. Interoperability, Exif IFD has the "
|
"same structure as that of the IFD specified in TIFF. "
|
"ordinarily, however, it does not contain image data as in "
|
"the case of TIFF."),
|
{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_INTER_COLOR_PROFILE, "InterColorProfile",
|
"InterColorProfile", ""},
|
{EXIF_TAG_EXPOSURE_PROGRAM, "ExposureProgram", N_("Exposure Program"),
|
N_("The class of the program used by the camera to set exposure "
|
"when the picture is taken."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SPECTRAL_SENSITIVITY, "SpectralSensitivity",
|
N_("Spectral Sensitivity"),
|
N_("Indicates the spectral sensitivity of each channel of the "
|
"camera used. The tag value is an ASCII string compatible "
|
"with the standard developed by the ASTM Technical Committee."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_GPS_INFO_IFD_POINTER, "GPSInfoIFDPointer",
|
N_("GPS Info IFD Pointer"),
|
N_("A pointer to the GPS Info IFD. The "
|
"Interoperability structure of the GPS Info IFD, like that of "
|
"Exif IFD, has no image data."),
|
{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
|
{EXIF_TAG_ISO_SPEED_RATINGS, "ISOSpeedRatings",
|
N_("ISO Speed Ratings"),
|
N_("Indicates the ISO Speed and ISO Latitude of the camera or "
|
"input device as specified in ISO 12232."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_OECF, "OECF", N_("Opto-Electronic Conversion Function"),
|
N_("Indicates the Opto-Electronic Conversion Function (OECF) "
|
"specified in ISO 14524. <OECF> is the relationship between "
|
"the camera optical input and the image values."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_TIME_ZONE_OFFSET, "TimeZoneOffset", N_("Time Zone Offset"),
|
N_("Encodes time zone of camera clock relative to GMT.")},
|
{EXIF_TAG_EXIF_VERSION, "ExifVersion", N_("Exif Version"),
|
N_("The version of this standard supported. Nonexistence of this "
|
"field is taken to mean nonconformance to the standard."),
|
{ ESL_NNNN, ESL_NNNN, ESL_MMMM, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_DATE_TIME_ORIGINAL, "DateTimeOriginal",
|
N_("Date and Time (Original)"),
|
N_("The date and time when the original image data was generated. "
|
"For a digital still camera "
|
"the date and time the picture was taken are recorded."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_DATE_TIME_DIGITIZED, "DateTimeDigitized",
|
N_("Date and Time (Digitized)"),
|
N_("The date and time when the image was stored as digital data."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_COMPONENTS_CONFIGURATION, "ComponentsConfiguration",
|
N_("Components Configuration"),
|
N_("Information specific to compressed data. The channels of "
|
"each component are arranged in order from the 1st "
|
"component to the 4th. For uncompressed data the data "
|
"arrangement is given in the <PhotometricInterpretation> tag. "
|
"However, since <PhotometricInterpretation> can only "
|
"express the order of Y, Cb and Cr, this tag is provided "
|
"for cases when compressed data uses components other than "
|
"Y, Cb, and Cr and to enable support of other sequences."),
|
{ ESL_NNNN, ESL_NNNN, ESL_NNNM, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_COMPRESSED_BITS_PER_PIXEL, "CompressedBitsPerPixel",
|
N_("Compressed Bits per Pixel"),
|
N_("Information specific to compressed data. The compression mode "
|
"used for a compressed image is indicated in unit bits "
|
"per pixel."),
|
{ ESL_NNNN, ESL_NNNN, ESL_NNNO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SHUTTER_SPEED_VALUE, "ShutterSpeedValue", N_("Shutter Speed"),
|
N_("Shutter speed. The unit is the APEX (Additive System of "
|
"Photographic Exposure) setting."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_APERTURE_VALUE, "ApertureValue", N_("Aperture"),
|
N_("The lens aperture. The unit is the APEX value."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_BRIGHTNESS_VALUE, "BrightnessValue", N_("Brightness"),
|
N_("The value of brightness. The unit is the APEX value. "
|
"Ordinarily it is given in the range of -99.99 to 99.99."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_EXPOSURE_BIAS_VALUE, "ExposureBiasValue",
|
N_("Exposure Bias"),
|
N_("The exposure bias. The units is the APEX value. Ordinarily "
|
"it is given in the range of -99.99 to 99.99."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_MAX_APERTURE_VALUE, "MaxApertureValue", N_("Maximum Aperture Value"),
|
N_("The smallest F number of the lens. The unit is the APEX value. "
|
"Ordinarily it is given in the range of 00.00 to 99.99, "
|
"but it is not limited to this range."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SUBJECT_DISTANCE, "SubjectDistance",
|
N_("Subject Distance"),
|
N_("The distance to the subject, given in meters."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_METERING_MODE, "MeteringMode", N_("Metering Mode"),
|
N_("The metering mode."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_LIGHT_SOURCE, "LightSource", N_("Light Source"),
|
N_("The kind of light source."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FLASH, "Flash", N_("Flash"),
|
N_("This tag is recorded when an image is taken using a strobe "
|
"light (flash)."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FOCAL_LENGTH, "FocalLength", N_("Focal Length"),
|
N_("The actual focal length of the lens, in mm. Conversion is not "
|
"made to the focal length of a 35 mm film camera."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SUBJECT_AREA, "SubjectArea", N_("Subject Area"),
|
N_("This tag indicates the location and area of the main subject "
|
"in the overall scene."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_TIFF_EP_STANDARD_ID, "TIFF/EPStandardID", N_("TIFF/EP Standard ID"), ""},
|
{EXIF_TAG_MAKER_NOTE, "MakerNote", N_("Maker Note"),
|
N_("A tag for manufacturers of Exif writers to record any desired "
|
"information. The contents are up to the manufacturer."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_USER_COMMENT, "UserComment", N_("User Comment"),
|
N_("A tag for Exif users to write keywords or comments on the image "
|
"besides those in <ImageDescription>, and without the "
|
"character code limitations of the <ImageDescription> tag. The "
|
"character code used in the <UserComment> tag is identified "
|
"based on an ID code in a fixed 8-byte area at the start of "
|
"the tag data area. The unused portion of the area is padded "
|
"with NULL (\"00.h\"). ID codes are assigned by means of "
|
"registration. The designation method and references for each "
|
"character code are defined in the specification. The value of "
|
"CountN is determined based on the 8 bytes in the character code "
|
"area and the number of bytes in the user comment part. Since "
|
"the TYPE is not ASCII, NULL termination is not necessary. "
|
"The ID code for the <UserComment> area may be a Defined code "
|
"such as JIS or ASCII, or may be Undefined. The Undefined name "
|
"is UndefinedText, and the ID code is filled with 8 bytes of all "
|
"\"NULL\" (\"00.H\"). An Exif reader that reads the "
|
"<UserComment> tag must have a function for determining the "
|
"ID code. This function is not required in Exif readers that "
|
"do not use the <UserComment> tag. "
|
"When a <UserComment> area is set aside, it is recommended that "
|
"the ID code be ASCII and that the following user comment "
|
"part be filled with blank characters [20.H]."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SUB_SEC_TIME, "SubsecTime", N_("Sub-second Time"),
|
N_("A tag used to record fractions of seconds for the "
|
"<DateTime> tag."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SUB_SEC_TIME_ORIGINAL, "SubSecTimeOriginal",
|
N_("Sub-second Time (Original)"),
|
N_("A tag used to record fractions of seconds for the "
|
"<DateTimeOriginal> tag."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SUB_SEC_TIME_DIGITIZED, "SubSecTimeDigitized",
|
N_("Sub-second Time (Digitized)"),
|
N_("A tag used to record fractions of seconds for the "
|
"<DateTimeDigitized> tag."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 (Microsoft extension) */
|
{EXIF_TAG_XP_TITLE, "XPTitle", N_("XP Title"),
|
N_("A character string giving the title of the image, encoded in "
|
"UTF-16LE."),
|
{ ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 (Microsoft extension) */
|
{EXIF_TAG_XP_COMMENT, "XPComment", N_("XP Comment"),
|
N_("A character string containing a comment about the image, encoded "
|
"in UTF-16LE."),
|
{ ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 (Microsoft extension) */
|
{EXIF_TAG_XP_AUTHOR, "XPAuthor", N_("XP Author"),
|
N_("A character string containing the name of the image creator, "
|
"encoded in UTF-16LE."),
|
{ ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 (Microsoft extension) */
|
{EXIF_TAG_XP_KEYWORDS, "XPKeywords", N_("XP Keywords"),
|
N_("A character string containing key words describing the image, "
|
"encoded in UTF-16LE."),
|
{ ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 (Microsoft extension) */
|
{EXIF_TAG_XP_SUBJECT, "XPSubject", N_("XP Subject"),
|
N_("A character string giving the image subject, encoded in "
|
"UTF-16LE."),
|
{ ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FLASH_PIX_VERSION, "FlashPixVersion", "FlashPixVersion",
|
N_("The FlashPix format version supported by a FPXR file."),
|
{ ESL_NNNN, ESL_NNNN, ESL_MMMM, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_COLOR_SPACE, "ColorSpace", N_("Color Space"),
|
N_("The color space information tag is always "
|
"recorded as the color space specifier. Normally sRGB (=1) "
|
"is used to define the color space based on the PC monitor "
|
"conditions and environment. If a color space other than "
|
"sRGB is used, Uncalibrated (=FFFF.H) is set. Image data "
|
"recorded as Uncalibrated can be treated as sRGB when it is "
|
"converted to FlashPix."),
|
{ ESL_NNNN, ESL_NNNN, ESL_MMMM, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_PIXEL_X_DIMENSION, "PixelXDimension", N_("Pixel X Dimension"),
|
N_("Information specific to compressed data. When a "
|
"compressed file is recorded, the valid width of the "
|
"meaningful image must be recorded in this tag, whether or "
|
"not there is padding data or a restart marker. This tag "
|
"should not exist in an uncompressed file."),
|
{ ESL_NNNN, ESL_NNNN, ESL_NNNM, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_PIXEL_Y_DIMENSION, "PixelYDimension", N_("Pixel Y Dimension"),
|
N_("Information specific to compressed data. When a compressed "
|
"file is recorded, the valid height of the meaningful image "
|
"must be recorded in this tag, whether or not there is padding "
|
"data or a restart marker. This tag should not exist in an "
|
"uncompressed file. "
|
"Since data padding is unnecessary in the vertical direction, "
|
"the number of lines recorded in this valid image height tag "
|
"will in fact be the same as that recorded in the SOF."),
|
{ ESL_NNNN, ESL_NNNN, ESL_NNNM, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_RELATED_SOUND_FILE, "RelatedSoundFile",
|
N_("Related Sound File"),
|
N_("This tag is used to record the name of an audio file related "
|
"to the image data. The only relational information "
|
"recorded here is the Exif audio file name and extension (an "
|
"ASCII string consisting of 8 characters + '.' + 3 "
|
"characters). The path is not recorded. Stipulations on audio "
|
"and file naming conventions are defined in the specification. "
|
"When using this tag, audio files must be recorded in "
|
"conformance to the Exif audio format. Writers are also allowed "
|
"to store the data such as Audio within APP2 as FlashPix "
|
"extension stream data. "
|
"The mapping of Exif image files and audio files is done "
|
"in any of three ways, [1], [2] and [3]. If multiple files "
|
"are mapped to one file as in [2] or [3], the above "
|
"format is used to record just one audio file name. If "
|
"there are multiple audio files, the first recorded file is "
|
"given. In the case of [3], for example, for the "
|
"Exif image file \"DSC00001.JPG\" only \"SND00001.WAV\" is "
|
"given as the related Exif audio file. When there are three "
|
"Exif audio files \"SND00001.WAV\", \"SND00002.WAV\" and "
|
"\"SND00003.WAV\", the Exif image file name for each of them, "
|
"\"DSC00001.JPG\", is indicated. By combining multiple "
|
"relational information, a variety of playback possibilities "
|
"can be supported. The method of using relational information "
|
"is left to the implementation on the playback side. Since this "
|
"information is an ASCII character string, it is terminated by "
|
"NULL. When this tag is used to map audio files, the relation "
|
"of the audio file to image data must also be indicated on the "
|
"audio file end."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_INTEROPERABILITY_IFD_POINTER, "InteroperabilityIFDPointer",
|
N_("Interoperability IFD Pointer"),
|
N_("Interoperability IFD is composed of tags which stores the "
|
"information to ensure the Interoperability and pointed "
|
"by the following tag located in Exif IFD. "
|
"The Interoperability structure of Interoperability IFD is "
|
"the same as TIFF defined IFD structure "
|
"but does not contain the "
|
"image data characteristically compared with normal TIFF "
|
"IFD."),
|
{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FLASH_ENERGY, "FlashEnergy", N_("Flash Energy"),
|
N_("Indicates the strobe energy at the time the image is "
|
"captured, as measured in Beam Candle Power Seconds (BCPS)."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SPATIAL_FREQUENCY_RESPONSE, "SpatialFrequencyResponse",
|
N_("Spatial Frequency Response"),
|
N_("This tag records the camera or input device spatial frequency "
|
"table and SFR values in the direction of image width, "
|
"image height, and diagonal direction, as specified in ISO "
|
"12233."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FOCAL_PLANE_X_RESOLUTION, "FocalPlaneXResolution",
|
N_("Focal Plane X-Resolution"),
|
N_("Indicates the number of pixels in the image width (X) direction "
|
"per <FocalPlaneResolutionUnit> on the camera focal plane."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION, "FocalPlaneYResolution",
|
N_("Focal Plane Y-Resolution"),
|
N_("Indicates the number of pixels in the image height (V) direction "
|
"per <FocalPlaneResolutionUnit> on the camera focal plane."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT, "FocalPlaneResolutionUnit",
|
N_("Focal Plane Resolution Unit"),
|
N_("Indicates the unit for measuring <FocalPlaneXResolution> and "
|
"<FocalPlaneYResolution>. This value is the same as the "
|
"<ResolutionUnit>."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SUBJECT_LOCATION, "SubjectLocation",
|
N_("Subject Location"),
|
N_("Indicates the location of the main subject in the scene. The "
|
"value of this tag represents the pixel at the center of the "
|
"main subject relative to the left edge, prior to rotation "
|
"processing as per the <Rotation> tag. The first value "
|
"indicates the X column number and the second indicates "
|
"the Y row number."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_EXPOSURE_INDEX, "ExposureIndex", N_("Exposure Index"),
|
N_("Indicates the exposure index selected on the camera or "
|
"input device at the time the image is captured."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SENSING_METHOD, "SensingMethod", N_("Sensing Method"),
|
N_("Indicates the image sensor type on the camera or input "
|
"device."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FILE_SOURCE, "FileSource", N_("File Source"),
|
N_("Indicates the image source. If a DSC recorded the image, "
|
"the tag value of this tag always be set to 3, indicating "
|
"that the image was recorded on a DSC."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SCENE_TYPE, "SceneType", N_("Scene Type"),
|
N_("Indicates the type of scene. If a DSC recorded the image, "
|
"this tag value must always be set to 1, indicating that the "
|
"image was directly photographed."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_NEW_CFA_PATTERN, "CFAPattern",
|
N_("CFA Pattern"),
|
N_("Indicates the color filter array (CFA) geometric pattern of the "
|
"image sensor when a one-chip color area sensor is used. "
|
"It does not apply to all sensing methods."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_CUSTOM_RENDERED, "CustomRendered", N_("Custom Rendered"),
|
N_("This tag indicates the use of special processing on image "
|
"data, such as rendering geared to output. When special "
|
"processing is performed, the reader is expected to disable "
|
"or minimize any further processing."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_EXPOSURE_MODE, "ExposureMode", N_("Exposure Mode"),
|
N_("This tag indicates the exposure mode set when the image was "
|
"shot. In auto-bracketing mode, the camera shoots a series of "
|
"frames of the same scene at different exposure settings."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_WHITE_BALANCE, "WhiteBalance", N_("White Balance"),
|
N_("This tag indicates the white balance mode set when the image "
|
"was shot."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_DIGITAL_ZOOM_RATIO, "DigitalZoomRatio",
|
N_("Digital Zoom Ratio"),
|
N_("This tag indicates the digital zoom ratio when the image was "
|
"shot. If the numerator of the recorded value is 0, this "
|
"indicates that digital zoom was not used."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM, "FocalLengthIn35mmFilm",
|
N_("Focal Length in 35mm Film"),
|
N_("This tag indicates the equivalent focal length assuming a "
|
"35mm film camera, in mm. A value of 0 means the focal "
|
"length is unknown. Note that this tag differs from the "
|
"FocalLength tag."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SCENE_CAPTURE_TYPE, "SceneCaptureType",
|
N_("Scene Capture Type"),
|
N_("This tag indicates the type of scene that was shot. It can "
|
"also be used to record the mode in which the image was "
|
"shot. Note that this differs from the scene type "
|
"<SceneType> tag."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_GAIN_CONTROL, "GainControl", N_("Gain Control"),
|
N_("This tag indicates the degree of overall image gain "
|
"adjustment."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_CONTRAST, "Contrast", N_("Contrast"),
|
N_("This tag indicates the direction of contrast processing "
|
"applied by the camera when the image was shot."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SATURATION, "Saturation", N_("Saturation"),
|
N_("This tag indicates the direction of saturation processing "
|
"applied by the camera when the image was shot."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SHARPNESS, "Sharpness", N_("Sharpness"),
|
N_("This tag indicates the direction of sharpness processing "
|
"applied by the camera when the image was shot."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_DEVICE_SETTING_DESCRIPTION, "DeviceSettingDescription",
|
N_("Device Setting Description"),
|
N_("This tag indicates information on the picture-taking "
|
"conditions of a particular camera model. The tag is used "
|
"only to indicate the picture-taking conditions in the "
|
"reader."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_SUBJECT_DISTANCE_RANGE, "SubjectDistanceRange",
|
N_("Subject Distance Range"),
|
N_("This tag indicates the distance to the subject."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
{EXIF_TAG_IMAGE_UNIQUE_ID, "ImageUniqueID", N_("Image Unique ID"),
|
N_("This tag indicates an identifier assigned uniquely to "
|
"each image. It is recorded as an ASCII string equivalent "
|
"to hexadecimal notation and 128-bit fixed length."),
|
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_GAMMA, "Gamma", N_("Gamma"),
|
N_("Indicates the value of coefficient gamma.")},
|
/* Not in EXIF 2.2 */
|
{EXIF_TAG_PRINT_IMAGE_MATCHING, "PrintImageMatching", N_("PRINT Image Matching"),
|
N_("Related to Epson's PRINT Image Matching technology")},
|
/* Not in EXIF 2.2 (from the Microsoft HD Photo specification) */
|
{EXIF_TAG_PADDING, "Padding", N_("Padding"),
|
N_("This tag reserves space that can be reclaimed later when "
|
"additional metadata are added. New metadata can be written "
|
"in place by replacing this tag with a smaller data element "
|
"and using the reclaimed space to store the new or expanded "
|
"metadata tags."),
|
{ ESL_OOOO, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
|
#endif
|
{0, NULL, NULL, NULL}
|
};
|
|
/* For now, do not use these functions. */
|
|
/*!
|
* Return the number of entries in the EXIF tag table, including the
|
* terminating NULL entry.
|
*/
|
inline unsigned int
|
exif_tag_table_count (void)
|
{
|
return sizeof (ExifTagTable) / sizeof (ExifTagTable[0]);
|
}
|
|
|
ExifTag
|
exif_tag_table_get_tag (unsigned int n)
|
{
|
return (n < exif_tag_table_count ()) ? ExifTagTable[n].tag : 0;
|
}
|
|
const char *
|
exif_tag_table_get_name (unsigned int n)
|
{
|
return (n < exif_tag_table_count ()) ? ExifTagTable[n].name : NULL;
|
}
|
|
/*!
|
* Compares the tag with that in entry.
|
* \param[in] tag pointer to integer tag value
|
* \param[in] entry pointer to a struct TagEntry
|
* \return 0 if tags are equal, <0 if tag < entry, >0 if tag > entry
|
*/
|
static int
|
match_tag(const void *tag, const void *entry)
|
{
|
return *(int*)tag - ((struct TagEntry *)entry)->tag;
|
}
|
|
|
/*!
|
* Finds the first entry in the EXIF tag table with the given tag number
|
* using a binary search.
|
* \param[in] tag to find
|
* \return index into table, or -1 if not found
|
*/
|
static int
|
exif_tag_table_first(ExifTag tag)
|
{
|
int i;
|
struct TagEntry *entry = bsearch(&tag, ExifTagTable,
|
exif_tag_table_count()-1, sizeof(struct TagEntry), match_tag);
|
if (!entry)
|
return -1; /* Not found */
|
|
/* Calculate index of found entry */
|
i = entry - ExifTagTable;
|
|
/* There may be other entries with the same tag number, so search
|
* backwards to find the first
|
*/
|
while ((i > 0) && (ExifTagTable[i-1].tag == tag)) {
|
--i;
|
}
|
return i;
|
}
|
|
#define RECORDED \
|
((ExifTagTable[i].esl[ifd][EXIF_DATA_TYPE_UNCOMPRESSED_CHUNKY] != EXIF_SUPPORT_LEVEL_NOT_RECORDED) || \
|
(ExifTagTable[i].esl[ifd][EXIF_DATA_TYPE_UNCOMPRESSED_PLANAR] != EXIF_SUPPORT_LEVEL_NOT_RECORDED) || \
|
(ExifTagTable[i].esl[ifd][EXIF_DATA_TYPE_UNCOMPRESSED_YCC] != EXIF_SUPPORT_LEVEL_NOT_RECORDED) || \
|
(ExifTagTable[i].esl[ifd][EXIF_DATA_TYPE_COMPRESSED] != EXIF_SUPPORT_LEVEL_NOT_RECORDED))
|
|
const char *
|
exif_tag_get_name_in_ifd (ExifTag tag, ExifIfd ifd)
|
{
|
unsigned int i;
|
int first;
|
|
if (ifd >= EXIF_IFD_COUNT)
|
return NULL;
|
first = exif_tag_table_first(tag);
|
if (first < 0)
|
return NULL;
|
|
for (i = first; ExifTagTable[i].name; i++) {
|
if (ExifTagTable[i].tag == tag) {
|
if (RECORDED)
|
break;
|
} else
|
return NULL; /* Recorded tag not found in the table */
|
}
|
return ExifTagTable[i].name;
|
}
|
|
const char *
|
exif_tag_get_title_in_ifd (ExifTag tag, ExifIfd ifd)
|
{
|
unsigned int i;
|
int first;
|
|
if (ifd >= EXIF_IFD_COUNT)
|
return NULL;
|
first = exif_tag_table_first(tag);
|
if (first < 0)
|
return NULL;
|
|
for (i = first; ExifTagTable[i].name; i++) {
|
if (ExifTagTable[i].tag == tag) {
|
if (RECORDED)
|
break;
|
} else
|
return NULL; /* Recorded tag not found in the table */
|
}
|
/* FIXME: This belongs to somewhere else. */
|
/* libexif should use the default system locale.
|
* If an application specifically requires UTF-8, then we
|
* must give the application a way to tell libexif that.
|
*
|
* bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
|
*/
|
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
|
return _(ExifTagTable[i].title);
|
}
|
|
const char *
|
exif_tag_get_description_in_ifd (ExifTag tag, ExifIfd ifd)
|
{
|
unsigned int i;
|
int first;
|
|
if (ifd >= EXIF_IFD_COUNT)
|
return NULL;
|
first = exif_tag_table_first(tag);
|
if (first < 0)
|
return NULL;
|
|
for (i = first; ExifTagTable[i].name; i++) {
|
if (ExifTagTable[i].tag == tag) {
|
if (RECORDED)
|
break;
|
} else
|
return NULL; /* Recorded tag not found in the table */
|
}
|
|
/* GNU gettext acts strangely when given an empty string */
|
if (!ExifTagTable[i].description || !*ExifTagTable[i].description)
|
return "";
|
|
/* libexif should use the default system locale.
|
* If an application specifically requires UTF-8, then we
|
* must give the application a way to tell libexif that.
|
*
|
* bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
|
*/
|
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
|
return _(ExifTagTable[i].description);
|
}
|
|
|
/**********************************************************************
|
* convenience functions
|
**********************************************************************/
|
|
/* generic part: iterate through IFD list and return first result */
|
typedef const char * (*get_stuff_func) (ExifTag tag, ExifIfd ifd);
|
|
static const char *
|
exif_tag_get_stuff (ExifTag tag, get_stuff_func func)
|
{
|
/* Search IFDs in this order, in decreasing order of number of valid tags */
|
static const ExifIfd ifds[EXIF_IFD_COUNT] = {
|
EXIF_IFD_EXIF,
|
EXIF_IFD_0,
|
EXIF_IFD_1,
|
EXIF_IFD_INTEROPERABILITY,
|
EXIF_IFD_GPS
|
};
|
int i;
|
for (i=0; i<EXIF_IFD_COUNT; i++) {
|
const char *result = func(tag, ifds[i]);
|
if (result != NULL) {
|
return result;
|
}
|
}
|
return (const char *) NULL;
|
}
|
|
/* explicit functions */
|
const char *
|
exif_tag_get_name (ExifTag tag)
|
{
|
return exif_tag_get_stuff(tag, exif_tag_get_name_in_ifd);
|
}
|
|
const char *
|
exif_tag_get_title (ExifTag tag)
|
{
|
return exif_tag_get_stuff(tag, exif_tag_get_title_in_ifd);
|
}
|
|
const char *
|
exif_tag_get_description (ExifTag tag)
|
{
|
return exif_tag_get_stuff(tag, exif_tag_get_description_in_ifd);
|
}
|
|
|
|
ExifTag
|
exif_tag_from_name (const char *name)
|
{
|
unsigned int i;
|
unsigned int result=0;
|
|
if (!name) return 0;
|
|
for (i = 0; ExifTagTable[i].name; i++)
|
if (!strcmp (ExifTagTable[i].name, name)) {
|
result = ExifTagTable[i].tag;
|
break;
|
}
|
return result;
|
}
|
|
/*! Return the support level of a tag in the given IFD with the given data
|
* type. If the tag is not specified in the EXIF standard, this function
|
* returns EXIF_SUPPORT_LEVEL_NOT_RECORDED.
|
*
|
* \param[in] tag EXIF tag
|
* \param[in] ifd a valid IFD (not EXIF_IFD_COUNT)
|
* \param[in] t a valid data type (not EXIF_DATA_TYPE_UNKNOWN)
|
* \return the level of support for this tag
|
*/
|
static inline ExifSupportLevel
|
get_support_level_in_ifd (ExifTag tag, ExifIfd ifd, ExifDataType t)
|
{
|
unsigned int i;
|
int first = exif_tag_table_first(tag);
|
if (first < 0)
|
return EXIF_SUPPORT_LEVEL_NOT_RECORDED;
|
|
for (i = first; ExifTagTable[i].name; i++) {
|
if (ExifTagTable[i].tag == tag) {
|
const ExifSupportLevel supp = ExifTagTable[i].esl[ifd][t];
|
if (supp != EXIF_SUPPORT_LEVEL_NOT_RECORDED)
|
return supp;
|
/* Try looking for another entry */
|
} else {
|
break; /* We've reached the end of the matching tags */
|
}
|
}
|
return EXIF_SUPPORT_LEVEL_NOT_RECORDED;
|
}
|
|
/*! Return the support level of a tag in the given IFD, regardless of the
|
* data type. If the support level varies depending on the data type, this
|
* function returns EXIF_SUPPORT_LEVEL_UNKNOWN. If the tag is not specified
|
* in the EXIF standard, this function returns EXIF_SUPPORT_LEVEL_UNKNOWN.
|
*
|
* \param[in] tag EXIF tag
|
* \param[in] ifd a valid IFD (not EXIF_IFD_COUNT)
|
* \return the level of support for this tag
|
*/
|
static inline ExifSupportLevel
|
get_support_level_any_type (ExifTag tag, ExifIfd ifd)
|
{
|
unsigned int i;
|
int first = exif_tag_table_first(tag);
|
if (first < 0)
|
return EXIF_SUPPORT_LEVEL_UNKNOWN;
|
|
for (i = first; ExifTagTable[i].name; i++) {
|
if (ExifTagTable[i].tag == tag) {
|
/*
|
* Check whether the support level is the same for all possible
|
* data types and isn't marked not recorded.
|
*/
|
const ExifSupportLevel supp = ExifTagTable[i].esl[ifd][0];
|
/* If level is not recorded, keep searching for another */
|
if (supp != EXIF_SUPPORT_LEVEL_NOT_RECORDED) {
|
unsigned int dt;
|
for (dt = 0; dt < EXIF_DATA_TYPE_COUNT; ++dt) {
|
if (ExifTagTable[i].esl[ifd][dt] != supp)
|
break;
|
}
|
if (dt == EXIF_DATA_TYPE_COUNT)
|
/* Support level is always the same, so return it */
|
return supp;
|
}
|
/* Keep searching the table for another tag for our IFD */
|
} else {
|
break; /* We've reached the end of the matching tags */
|
}
|
}
|
return EXIF_SUPPORT_LEVEL_UNKNOWN;
|
}
|
|
ExifSupportLevel
|
exif_tag_get_support_level_in_ifd (ExifTag tag, ExifIfd ifd, ExifDataType t)
|
{
|
if (ifd >= EXIF_IFD_COUNT)
|
return EXIF_SUPPORT_LEVEL_UNKNOWN;
|
|
if (t >= EXIF_DATA_TYPE_COUNT)
|
return get_support_level_any_type (tag, ifd);
|
|
return get_support_level_in_ifd (tag, ifd, t);
|
}
|
