*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
*/
#include <config.h>
#define ESL_NNMM { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_MANDATORY, EXIF_SUPPORT_LEVEL_MANDATORY }
#define ESL_NNNM { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_MANDATORY }
#define ESL_NNNO { EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_NOT_RECORDED, EXIF_SUPPORT_LEVEL_OPTIONAL }
+#define ESL_UUUU { EXIF_SUPPORT_LEVEL_UNKNOWN, EXIF_SUPPORT_LEVEL_UNKNOWN, EXIF_SUPPORT_LEVEL_UNKNOWN, EXIF_SUPPORT_LEVEL_UNKNOWN }
#define ESL_GPS { ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN }
+#define ESL_UNKNOWN { ESL_UUUU, ESL_UUUU, ESL_UUUU, ESL_UUUU, ESL_UUUU }
-static const struct {
+/*!
+ * Table giving information about each EXIF tag.
+ * There may be more than one entry with the same tag value because some tags
+ * have different meanings depending on the IFD in which they appear.
+ * When there are such duplicate entries, there must be no overlap in their
+ * support levels.
+ * The entries MUST be sorted in tag order.
+ * The name and title are mandatory, but the description may be an empty
+ * string. None of the entries may be NULL except the final array terminator.
+ */
+static const struct TagEntry {
/*! Tag ID. There may be duplicate tags when the same number is used for
* different meanings in different IFDs. */
ExifTag tag;
ExifSupportLevel esl[EXIF_IFD_COUNT][EXIF_DATA_TYPE_COUNT];
} ExifTagTable[] = {
#ifndef NO_VERBOSE_TAG_STRINGS
- /* Not in EXIF 2.2 */
- {EXIF_TAG_NEW_SUBFILE_TYPE, "NewSubfileType",
- N_("New Subfile Type"), N_("A general indication of the kind of data "
- "contained in this subfile.")},
+ {EXIF_TAG_GPS_VERSION_ID, "GPSVersionID", N_("GPS Tag Version"),
+ N_("Indicates the version of <GPSInfoIFD>. The version is given "
+ "as 2.0.0.0. This tag is mandatory when <GPSInfo> tag is "
+ "present. (Note: The <GPSVersionID> tag is given in bytes, "
+ "unlike the <ExifVersion> tag. When the version is "
+ "2.0.0.0, the tag value is 02000000.H)."), ESL_GPS},
{EXIF_TAG_INTEROPERABILITY_INDEX, "InteroperabilityIndex",
N_("Interoperability Index"),
N_("Indicates the identification of the Interoperability rule. "
"volume of Recommended Exif Interoperability Rules (ExifR98) "
"for other tags used for ExifR98."),
{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_OOOO } },
+ {EXIF_TAG_GPS_LATITUDE_REF, "GPSLatitudeRef", N_("North or South Latitude"),
+ N_("Indicates whether the latitude is north or south latitude. The "
+ "ASCII value 'N' indicates north latitude, and 'S' is south "
+ "latitude."), ESL_GPS},
{EXIF_TAG_INTEROPERABILITY_VERSION, "InteroperabilityVersion",
N_("Interoperability Version"), "",
{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_OOOO } },
+ {EXIF_TAG_GPS_LATITUDE, "GPSLatitude", N_("Latitude"),
+ N_("Indicates the latitude. The latitude is expressed as three "
+ "RATIONAL values giving the degrees, minutes, and seconds, "
+ "respectively. When degrees, minutes and seconds are expressed, "
+ "the format is dd/1,mm/1,ss/1. When degrees and minutes are used "
+ "and, for example, fractions of minutes are given up to two "
+ "decimal places, the format is dd/1,mmmm/100,0/1."),
+ ESL_GPS},
+ {EXIF_TAG_GPS_LONGITUDE_REF, "GPSLongitudeRef", N_("East or West Longitude"),
+ N_("Indicates whether the longitude is east or west longitude. "
+ "ASCII 'E' indicates east longitude, and 'W' is west "
+ "longitude."), ESL_GPS},
+ {EXIF_TAG_GPS_LONGITUDE, "GPSLongitude", N_("Longitude"),
+ N_("Indicates the longitude. The longitude is expressed as three "
+ "RATIONAL values giving the degrees, minutes, and seconds, "
+ "respectively. When degrees, minutes and seconds are expressed, "
+ "the format is ddd/1,mm/1,ss/1. When degrees and minutes are "
+ "used and, for example, fractions of minutes are given up to "
+ "two decimal places, the format is ddd/1,mmmm/100,0/1."),
+ ESL_GPS},
+ {EXIF_TAG_GPS_ALTITUDE_REF, "GPSAltitudeRef", N_("Altitude Reference"),
+ N_("Indicates the altitude used as the reference altitude. If the "
+ "reference is sea level and the altitude is above sea level, 0 "
+ "is given. If the altitude is below sea level, a value of 1 is given "
+ "and the altitude is indicated as an absolute value in the "
+ "GPSAltitude tag. The reference unit is meters. Note that this tag "
+ "is BYTE type, unlike other reference tags."), ESL_GPS},
+ {EXIF_TAG_GPS_ALTITUDE, "GPSAltitude", N_("Altitude"),
+ N_("Indicates the altitude based on the reference in GPSAltitudeRef. "
+ "Altitude is expressed as one RATIONAL value. The reference unit "
+ "is meters."), ESL_GPS},
+ {EXIF_TAG_GPS_TIME_STAMP, "GPSTimeStamp", N_("GPS Time (Atomic Clock)"),
+ N_("Indicates the time as UTC (Coordinated Universal Time). "
+ "TimeStamp is expressed as three RATIONAL values giving "
+ "the hour, minute, and second."), ESL_GPS},
+ {EXIF_TAG_GPS_SATELLITES, "GPSSatellites", N_("GPS Satellites"),
+ N_("Indicates the GPS satellites used for measurements. This "
+ "tag can be used to describe the number of satellites, their ID "
+ "number, angle of elevation, azimuth, SNR and other information "
+ "in ASCII notation. The format is not specified. If the GPS "
+ "receiver is incapable of taking measurements, value of the tag "
+ "shall be set to NULL."), ESL_GPS},
+ {EXIF_TAG_GPS_STATUS, "GPSStatus", N_("GPS Receiver Status"),
+ N_("Indicates the status of the GPS receiver when the image is "
+ "recorded. 'A' means measurement is in progress, and 'V' means "
+ "the measurement is Interoperability."), ESL_GPS},
+ {EXIF_TAG_GPS_MEASURE_MODE, "GPSMeasureMode", N_("GPS Measurement Mode"),
+ N_("Indicates the GPS measurement mode. '2' means "
+ "two-dimensional measurement and '3' means three-dimensional "
+ "measurement is in progress."), ESL_GPS},
+ {EXIF_TAG_GPS_DOP, "GPSDOP", N_("Measurement Precision"),
+ N_("Indicates the GPS DOP (data degree of precision). An HDOP "
+ "value is written during two-dimensional measurement, and PDOP "
+ "during three-dimensional measurement."), ESL_GPS},
+ {EXIF_TAG_GPS_SPEED_REF, "GPSSpeedRef", N_("Speed Unit"),
+ N_("Indicates the unit used to express the GPS receiver speed "
+ "of movement. 'K', 'M' and 'N' represent kilometers per hour, "
+ "miles per hour, and knots."), ESL_GPS},
+ {EXIF_TAG_GPS_SPEED, "GPSSpeed", N_("Speed of GPS Receiver"),
+ N_("Indicates the speed of GPS receiver movement."), ESL_GPS},
+ {EXIF_TAG_GPS_TRACK_REF, "GPSTrackRef", N_("Reference for direction of movement"),
+ N_("Indicates the reference for giving the direction of GPS "
+ "receiver movement. 'T' denotes true direction and 'M' is "
+ "magnetic direction."), ESL_GPS},
+ {EXIF_TAG_GPS_TRACK, "GPSTrack", N_("Direction of Movement"),
+ N_("Indicates the direction of GPS receiver movement. The range "
+ "of values is from 0.00 to 359.99."), ESL_GPS},
+ {EXIF_TAG_GPS_IMG_DIRECTION_REF, "GPSImgDirectionRef", N_("GPS Image Direction Reference"),
+ N_("Indicates the reference for giving the direction of the image when it is captured. "
+ "'T' denotes true direction and 'M' is magnetic direction."), ESL_GPS},
+ {EXIF_TAG_GPS_IMG_DIRECTION, "GPSImgDirection", N_("GPS Image Direction"),
+ N_("Indicates the direction of the image when it was captured. The range of values is "
+ "from 0.00 to 359.99."), ESL_GPS},
+ {EXIF_TAG_GPS_MAP_DATUM, "GPSMapDatum", N_("Geodetic Survey Data Used"),
+ N_("Indicates the geodetic survey data used by the GPS "
+ "receiver. If the survey data is restricted to Japan, the value "
+ "of this tag is 'TOKYO' or 'WGS-84'. If a GPS Info tag is "
+ "recorded, it is strongly recommended that this tag be recorded."), ESL_GPS},
+ {EXIF_TAG_GPS_DEST_LATITUDE_REF, "GPSDestLatitudeRef", N_("Reference For Latitude of Destination"),
+ N_("Indicates whether the latitude of the destination point is "
+ "north or south latitude. The ASCII value 'N' indicates north "
+ "latitude, and 'S' is south latitude."), ESL_GPS},
+ {EXIF_TAG_GPS_DEST_LATITUDE, "GPSDestLatitude", N_("Latitude of Destination"),
+ N_("Indicates the latitude of the destination point. The "
+ "latitude is expressed as three RATIONAL values giving the "
+ "degrees, minutes, and seconds, respectively. If latitude is "
+ "expressed as degrees, minutes and seconds, a typical format "
+ "would be dd/1,mm/1,ss/1. When degrees and minutes are used and, "
+ "for example, fractions of minutes are given up to two decimal "
+ "places, the format would be dd/1,mmmm/100,0/1."), ESL_GPS},
+ {EXIF_TAG_GPS_DEST_LONGITUDE_REF, "GPSDestLongitudeRef", N_("Reference for Longitude of Destination"),
+ N_("Indicates whether the longitude of the destination point is "
+ "east or west longitude. ASCII 'E' indicates east longitude, and "
+ "'W' is west longitude."), ESL_GPS},
+ {EXIF_TAG_GPS_DEST_LONGITUDE, "GPSDestLongitude", N_("Longitude of Destination"),
+ N_("Indicates the longitude of the destination point. The "
+ "longitude is expressed as three RATIONAL values giving the "
+ "degrees, minutes, and seconds, respectively. If longitude is "
+ "expressed as degrees, minutes and seconds, a typical format "
+ "would be ddd/1,mm/1,ss/1. When degrees and minutes are used "
+ "and, for example, fractions of minutes are given up to two "
+ "decimal places, the format would be ddd/1,mmmm/100,0/1."),
+ ESL_GPS},
+ {EXIF_TAG_GPS_DEST_BEARING_REF, "GPSDestBearingRef", N_("Reference for Bearing of Destination"),
+ N_("Indicates the reference used for giving the bearing to "
+ "the destination point. 'T' denotes true direction and 'M' is "
+ "magnetic direction."), ESL_GPS},
+ {EXIF_TAG_GPS_DEST_BEARING, "GPSDestBearing", N_("Bearing of Destination"),
+ N_("Indicates the bearing to the destination point. The range "
+ "of values is from 0.00 to 359.99."), ESL_GPS},
+ {EXIF_TAG_GPS_DEST_DISTANCE_REF, "GPSDestDistanceRef", N_("Reference for Distance to Destination"),
+ N_("Indicates the unit used to express the distance to the "
+ "destination point. 'K', 'M' and 'N' represent kilometers, miles "
+ "and nautical miles."), ESL_GPS},
+ {EXIF_TAG_GPS_DEST_DISTANCE, "GPSDestDistance", N_("Distance to Destination"),
+ N_("Indicates the distance to the destination point."), ESL_GPS},
+ {EXIF_TAG_GPS_PROCESSING_METHOD, "GPSProcessingMethod", N_("Name of GPS Processing Method"),
+ N_("A character string recording the name of the method used "
+ "for location finding. The first byte indicates the character "
+ "code used, and this is followed by the name "
+ "of the method. Since the Type is not ASCII, NULL termination is "
+ "not necessary."), ESL_GPS},
+ {EXIF_TAG_GPS_AREA_INFORMATION, "GPSAreaInformation", N_("Name of GPS Area"),
+ N_("A character string recording the name of the GPS area. The "
+ "first byte indicates the character code used, "
+ "and this is followed by the name of the GPS area. Since "
+ "the Type is not ASCII, NULL termination is not necessary."), ESL_GPS},
+ {EXIF_TAG_GPS_DATE_STAMP, "GPSDateStamp", N_("GPS Date"),
+ N_("A character string recording date and time information "
+ "relative to UTC (Coordinated Universal Time). The format is "
+ "\"YYYY:MM:DD\". The length of the string is 11 bytes including "
+ "NULL."), ESL_GPS},
+ {EXIF_TAG_GPS_DIFFERENTIAL, "GPSDifferential", N_("GPS Differential Correction"),
+ N_("Indicates whether differential correction is applied to the "
+ "GPS receiver."), ESL_GPS},
+ /* Not in EXIF 2.2 */
+ {EXIF_TAG_NEW_SUBFILE_TYPE, "NewSubfileType",
+ N_("New Subfile Type"), N_("A general indication of the kind of data "
+ "contained in this subfile."),
+ ESL_UNKNOWN},
{EXIF_TAG_IMAGE_WIDTH, "ImageWidth", N_("Image Width"),
N_("The number of columns of image data, equal to the number of "
"pixels per row. In JPEG compressed data a JPEG marker is "
"marker is used instead of this tag."),
{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
/* Not in EXIF 2.2 */
- {EXIF_TAG_FILL_ORDER, "FillOrder", N_("Fill Order"), ""},
+ {EXIF_TAG_FILL_ORDER, "FillOrder", N_("Fill Order"), "", ESL_UNKNOWN},
/* Not in EXIF 2.2 */
- {EXIF_TAG_DOCUMENT_NAME, "DocumentName", N_("Document Name"), ""},
+ {EXIF_TAG_DOCUMENT_NAME, "DocumentName", N_("Document Name"), "",
+ ESL_UNKNOWN},
{EXIF_TAG_IMAGE_DESCRIPTION, "ImageDescription",
N_("Image Description"),
N_("A character string giving the title of the image. It may be "
N_("The total number of bytes in each strip. With JPEG compressed "
"data this designation is not needed and is omitted."),
{ ESL_MMMN, ESL_MMMN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
- {EXIF_TAG_X_RESOLUTION, "XResolution", N_("x-Resolution"),
+ {EXIF_TAG_X_RESOLUTION, "XResolution", N_("X-Resolution"),
N_("The number of pixels per <ResolutionUnit> in the <ImageWidth> "
"direction. When the image resolution is unknown, 72 [dpi] "
"is designated."),
{ ESL_MMMM, ESL_MMMM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
- {EXIF_TAG_Y_RESOLUTION, "YResolution", N_("y-Resolution"),
+ {EXIF_TAG_Y_RESOLUTION, "YResolution", N_("Y-Resolution"),
N_("The number of pixels per <ResolutionUnit> in the <ImageLength> "
"direction. The same value as <XResolution> is designated."),
{ ESL_MMMM, ESL_MMMM, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
"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_TRANSFER_RANGE, "TransferRange", N_("Transfer Range"), ""},
- /* 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.")},
+ "to enable TIFF Trees within a TIFF file."), ESL_UNKNOWN},
/* Not in EXIF 2.2 */
- {EXIF_TAG_JPEG_PROC, "JPEGProc", "JPEGProc", ""},
+ {EXIF_TAG_TRANSFER_RANGE, "TransferRange", N_("Transfer Range"), "",
+ ESL_UNKNOWN},
+ /* Not in EXIF 2.2 */
+ {EXIF_TAG_JPEG_PROC, "JPEGProc", "JPEGProc", "", ESL_UNKNOWN},
{EXIF_TAG_JPEG_INTERCHANGE_FORMAT, "JPEGInterchangeFormat",
N_("JPEG Interchange Format"),
N_("The offset to the start byte (SOI) of JPEG compressed "
"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")},
+ {EXIF_TAG_XML_PACKET, "XMLPacket", N_("XML Packet"), N_("XMP Metadata"),
+ ESL_UNKNOWN},
/* Not in EXIF 2.2 */
{EXIF_TAG_RELATED_IMAGE_FILE_FORMAT, "RelatedImageFileFormat",
- "RelatedImageFileFormat", ""},
+ "RelatedImageFileFormat", "", ESL_UNKNOWN},
/* Not in EXIF 2.2 */
{EXIF_TAG_RELATED_IMAGE_WIDTH, "RelatedImageWidth",
- "RelatedImageWidth", ""},
+ "RelatedImageWidth", "", ESL_UNKNOWN},
/* Not in EXIF 2.2 */
{EXIF_TAG_RELATED_IMAGE_LENGTH, "RelatedImageLength",
- "RelatedImageLength", ""},
+ "RelatedImageLength", "", ESL_UNKNOWN},
/* Not in EXIF 2.2 */
{EXIF_TAG_CFA_REPEAT_PATTERN_DIM, "CFARepeatPatternDim",
- "CFARepeatPatternDim", ""},
+ "CFARepeatPatternDim", "", ESL_UNKNOWN},
/* 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.")},
+ "It does not apply to all sensing methods."), ESL_UNKNOWN},
/* Not in EXIF 2.2 */
- {EXIF_TAG_BATTERY_LEVEL, "BatteryLevel", N_("Battery Level"), ""},
+ {EXIF_TAG_BATTERY_LEVEL, "BatteryLevel", N_("Battery Level"), "",
+ ESL_UNKNOWN},
{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 "
{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_("FNumber"),
+ {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", ""},
+ {EXIF_TAG_IPTC_NAA, "IPTC/NAA", "IPTC/NAA", "", ESL_UNKNOWN},
/* Not in EXIF 2.2 */
- {EXIF_TAG_IMAGE_RESOURCES, "ImageResources", N_("Image Resources Block"), ""},
+ {EXIF_TAG_IMAGE_RESOURCES, "ImageResources", N_("Image Resources Block"), "",
+ ESL_UNKNOWN},
{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. "
{ ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
/* Not in EXIF 2.2 */
{EXIF_TAG_INTER_COLOR_PROFILE, "InterColorProfile",
- "InterColorProfile", ""},
+ "InterColorProfile", "", ESL_UNKNOWN},
{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."),
"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",
- "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_GPS_VERSION_ID, "GPSVersionID", N_("GPS tag version"),
- N_("Indicates the version of <GPSInfoIFD>. The version is given "
- "as 2.0.0.0. This tag is mandatory when <GPSInfo> tag is "
- "present. (Note: The <GPSVersionID> tag is given in bytes, "
- "unlike the <ExifVersion> tag. When the version is "
- "2.0.0.0, the tag value is 02000000.H)."), ESL_GPS},
- {EXIF_TAG_GPS_LATITUDE_REF, "GPSLatitudeRef", N_("North or South Latitude"),
- N_("Indicates whether the latitude is north or south latitude. The "
- "ASCII value 'N' indicates north latitude, and 'S' is south "
- "latitude."), ESL_GPS},
- {EXIF_TAG_GPS_LATITUDE, "GPSLatitude", N_("Latitude"),
- N_("Indicates the latitude. The latitude is expressed as three "
- "RATIONAL values giving the degrees, minutes, and seconds, "
- "respectively. When degrees, minutes and seconds are expressed, "
- "the format is dd/1,mm/1,ss/1. When degrees and minutes are used "
- "and, for example, fractions of minutes are given up to two "
- "decimal places, the format is dd/1,mmmm/100,0/1."),
- ESL_GPS},
- {EXIF_TAG_GPS_LONGITUDE_REF, "GPSLongitudeRef", N_("East or West Longitude"),
- N_("Indicates whether the longitude is east or west longitude. "
- "ASCII 'E' indicates east longitude, and 'W' is west "
- "longitude."), ESL_GPS},
- {EXIF_TAG_GPS_LONGITUDE, "GPSLongitude", N_("Longitude"),
- N_("Indicates the longitude. The longitude is expressed as three "
- "RATIONAL values giving the degrees, minutes, and seconds, "
- "respectively. When degrees, minutes and seconds are expressed, "
- "the format is ddd/1,mm/1,ss/1. When degrees and minutes are "
- "used and, for example, fractions of minutes are given up to "
- "two decimal places, the format is ddd/1,mmmm/100,0/1."),
- ESL_GPS},
- {EXIF_TAG_GPS_ALTITUDE_REF, "GPSAltitudeRef", N_("Altitude reference"),
- N_("Indicates the altitude used as the reference altitude. If the "
- "reference is sea level and the altitude is above sea level, 0 "
- "is given. If the altitude is below sea level, a value of 1 is given "
- "and the altitude is indicated as an absolute value in the "
- "GSPAltitude tag. The reference unit is meters. Note that this tag "
- "is BYTE type, unlike other reference tags."), ESL_GPS},
- {EXIF_TAG_GPS_ALTITUDE, "GPSAltitude", N_("Altitude"),
- N_("Indicates the altitude based on the reference in GPSAltitudeRef. "
- "Altitude is expressed as one RATIONAL value. The reference unit "
- "is meters."), ESL_GPS},
- {EXIF_TAG_GPS_TIME_STAMP, "GPSTimeStamp", N_("GPS time (atomic clock)"),
- N_("Indicates the time as UTC (Coordinated Universal Time). "
- "TimeStamp is expressed as three RATIONAL values giving "
- "the hour, minute, and second."), ESL_GPS},
- {EXIF_TAG_GPS_SATELLITES, "GPSSatellites", N_("GPS satellites used for measurement"),
- N_("Indicates the GPS satellites used for measurements. This "
- "tag can be used to describe the number of satellites, their ID "
- "number, angle of elevation, azimuth, SNR and other information "
- "in ASCII notation. The format is not specified. If the GPS "
- "receiver is incapable of taking measurements, value of the tag "
- "shall be set to NULL."), ESL_GPS},
- {EXIF_TAG_GPS_STATUS, "GPSStatus", N_("GPS receiver status"),
- N_("Indicates the status of the GPS receiver when the image is "
- "recorded. 'A' means measurement is in progress, and 'V' means "
- "the measurement is Interoperability."), ESL_GPS},
- {EXIF_TAG_GPS_MEASURE_MODE, "GPSMeasureMode", N_("GPS measurement mode"),
- N_("Indicates the GPS measurement mode. '2' means "
- "two-dimensional measurement and '3' means three-dimensional "
- "measurement is in progress."), ESL_GPS},
- {EXIF_TAG_GPS_DOP, "GPSDOP", N_("Measurement precision"),
- N_("Indicates the GPS DOP (data degree of precision). An HDOP "
- "value is written during two-dimensional measurement, and PDOP "
- "during three-dimensional measurement."), ESL_GPS},
- {EXIF_TAG_GPS_SPEED_REF, "GPSSpeedRef", N_("Speed unit"),
- N_("Indicates the unit used to express the GPS receiver speed "
- "of movement. 'K', 'M' and 'N' represent kilometers per hour, "
- "miles per hour, and knots."), ESL_GPS},
- {EXIF_TAG_GPS_SPEED, "GPSSpeed", N_("Speed of GPS receiver"),
- N_("Indicates the speed of GPS receiver movement."), ESL_GPS},
- {EXIF_TAG_GPS_TRACK_REF, "GPSTrackRef", N_("Reference for direction of movement"),
- N_("Indicates the reference for giving the direction of GPS "
- "receiver movement. 'T' denotes true direction and 'M' is "
- "magnetic direction."), ESL_GPS},
- {EXIF_TAG_GPS_TRACK, "GPSTrack", N_("Direction of movement"),
- N_("Indicates the direction of GPS receiver movement. The range "
- "of values is from 0.00 to 359.99."), ESL_GPS},
- {EXIF_TAG_GPS_IMG_DIRECTION_REF, "GPSImgDirectionRef", N_("GPS Img Direction Reference"),
- N_("Indicates the reference for giving the direction of the image when it is captured. "
- "'T' denotes true direction and 'M' is magnetic direction."), ESL_GPS},
- {EXIF_TAG_GPS_IMG_DIRECTION, "GPSImgDirection", N_("GPS Img Direction"),
- N_("Indicates the direction of the image when it was captured. The range of values is "
- "from 0.00 to 359.99."), ESL_GPS},
- {EXIF_TAG_GPS_MAP_DATUM, "GPSMapDatum", N_("Geodetic survey data used"),
- N_("Indicates the geodetic survey data used by the GPS "
- "receiver. If the survey data is restricted to Japan, the value "
- "of this tag is 'TOKYO' or 'WGS-84'. If a GPS Info tag is "
- "recorded, it is strongly recommended that this tag be recorded."), ESL_GPS},
- {EXIF_TAG_GPS_DEST_LATITUDE_REF, "GPSDestLatitudeRef", N_("Reference for latitude of destination"),
- N_("Indicates whether the latitude of the destination point is "
- "north or south latitude. The ASCII value 'N' indicates north "
- "latitude, and 'S' is south latitude."), ESL_GPS},
- {EXIF_TAG_GPS_DEST_LATITUDE, "GPSDestLatitude", N_("Latitude of destination"),
- N_("Indicates the latitude of the destination point. The "
- "latitude is expressed as three RATIONAL values giving the "
- "degrees, minutes, and seconds, respectively. If latitude is "
- "expressed as degrees, minutes and seconds, a typical format "
- "would be dd/1,mm/1,ss/1. When degrees and minutes are used and, "
- "for example, fractions of minutes are given up to two decimal "
- "places, the format would be dd/1,mmmm/100,0/1."), ESL_GPS},
- {EXIF_TAG_GPS_DEST_LONGITUDE_REF, "GPSDestLongitudeRef", N_("Reference for longitude of destination"),
- N_("Indicates whether the longitude of the destination point is "
- "east or west longitude. ASCII 'E' indicates east longitude, and "
- "'W' is west longitude."), ESL_GPS},
- {EXIF_TAG_GPS_DEST_LONGITUDE, "GPSDestLongitude", N_("Longitude of destination"),
- N_("Indicates the longitude of the destination point. The "
- "longitude is expressed as three RATIONAL values giving the "
- "degrees, minutes, and seconds, respectively. If longitude is "
- "expressed as degrees, minutes and seconds, a typical format "
- "would be ddd/1,mm/1,ss/1. When degrees and minutes are used "
- "and, for example, fractions of minutes are given up to two "
- "decimal places, the format would be ddd/1,mmmm/100,0/1."),
- ESL_GPS},
- {EXIF_TAG_GPS_DEST_BEARING_REF, "GPSDestBearingRef", N_("Reference for bearing of destination"),
- N_("Indicates the reference used for giving the bearing to "
- "the destination point. 'T' denotes true direction and 'M' is "
- "magnetic direction."), ESL_GPS},
- {EXIF_TAG_GPS_DEST_BEARING, "GPSDestBearing", N_("Bearing of destination"),
- N_("Indicates the bearing to the destination point. The range "
- "of values is from 0.00 to 359.99."), ESL_GPS},
- {EXIF_TAG_GPS_DEST_DISTANCE_REF, "GPSDestDistanceRef", N_("Reference for distance to destination"),
- N_("Indicates the unit used to express the distance to the "
- "destination point. 'K', 'M' and 'N' represent kilometers, miles "
- "and knots."), ESL_GPS},
- {EXIF_TAG_GPS_DEST_DISTANCE, "GPSDestDistance", N_("Distance to destination"),
- N_("Indicates the distance to the destination point."), ESL_GPS},
- {EXIF_TAG_GPS_PROCESSING_METHOD, "GPSProcessingMethod", N_("Name of GPS processing method"),
- N_("A character string recording the name of the method used "
- "for location finding. The first byte indicates the character "
- "code used, and this is followed by the name "
- "of the method. Since the Type is not ASCII, NULL termination is "
- "not necessary."), ESL_GPS},
- {EXIF_TAG_GPS_AREA_INFORMATION, "GPSAreaInformation", N_("Name of GPS area"),
- N_("A character string recording the name of the GPS area. The "
- "first byte indicates the character code used, "
- "and this is followed by the name of the GPS area. Since "
- "the Type is not ASCII, NULL termination is not necessary."), ESL_GPS},
- {EXIF_TAG_GPS_DATE_STAMP, "GPSDateStamp", N_("GPS date"),
- N_("A character string recording date and time information "
- "relative to UTC (Coordinated Universal Time). The format is "
- "\"YYYY:MM:DD\". The length of the string is 11 bytes including "
- "NULL."), ESL_GPS},
- {EXIF_TAG_GPS_DIFFERENTIAL, "GPSDifferential", N_("GPS differential correction"),
- N_("Indicates whether differential correction is applied to the "
- "GPS receiver."), ESL_GPS},
-
{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_("OECF"),
+ {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.")},
+ N_("Encodes time zone of camera clock relative to GMT."),
+ ESL_UNKNOWN},
{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_("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_("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",
"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"),
+ {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 } },
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"), "",
+ ESL_UNKNOWN},
{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."),
"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", "SubsecTime",
+ {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",
- "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",
- "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 } },
"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", "PixelXDimension",
+ {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", "PixelYDimension",
+ {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 "
"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",
- "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 "
"conformance to the Exif audio format. Writers are also allowed "
"to store the data such as Audio within APP2 as FlashPix "
"extension stream data. "
- "Audio files must be recorded in conformance to the Exif audio "
- "format. The mapping of Exif image files and audio files is done "
+ "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 "
"audio file end."),
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
{EXIF_TAG_INTEROPERABILITY_IFD_POINTER, "InteroperabilityIFDPointer",
- "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. "
"12233."),
{ ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },
{EXIF_TAG_FOCAL_PLANE_X_RESOLUTION, "FocalPlaneXResolution",
- N_("Focal Plane x-Resolution"),
+ 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_("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 } },
"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_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_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 "
"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_("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 "
{ 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.")},
+ N_("Indicates the value of coefficient gamma."),
+ ESL_UNKNOWN},
/* Not in EXIF 2.2 */
{EXIF_TAG_PRINT_IMAGE_MATCHING, "PrintImageMatching", N_("PRINT Image Matching"),
- N_("Related to Epson's PRINT Image Matching technology")},
+ N_("Related to Epson's PRINT Image Matching technology"),
+ ESL_UNKNOWN},
+ /* 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}
+ {0, NULL, NULL, NULL, ESL_UNKNOWN}
};
/* For now, do not use these functions. */
-/*! \internal */
-ExifTag exif_tag_table_get_tag (unsigned int n);
-
-/*! \internal */
-const char *exif_tag_table_get_name (unsigned int n);
+/*!
+ * Return the number of entries in the EXIF tag table, including the
+ * terminating NULL entry.
+ */
+unsigned int
+exif_tag_table_count (void)
+{
+ return sizeof (ExifTagTable) / sizeof (ExifTagTable[0]);
+}
-/*! \internal */
-unsigned int exif_tag_table_count (void);
ExifTag
exif_tag_table_get_tag (unsigned int n)
return (n < exif_tag_table_count ()) ? ExifTagTable[n].name : NULL;
}
-unsigned int
-exif_tag_table_count (void)
+/*!
+ * 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 sizeof (ExifTagTable) / sizeof (ExifTagTable[0]);
+ 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 \
exif_tag_get_name_in_ifd (ExifTag tag, ExifIfd ifd)
{
unsigned int i;
+ int first;
- if (ifd >= EXIF_IFD_COUNT) return NULL;
- for (i = 0; ExifTagTable[i].name; i++)
- if ((ExifTagTable[i].tag == tag) && RECORDED) break;
+ 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;
}
exif_tag_get_title_in_ifd (ExifTag tag, ExifIfd ifd)
{
unsigned int i;
+ int first;
- /* 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");
- */
+ 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 */
+ }
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
- if (ifd >= EXIF_IFD_COUNT) return NULL;
- for (i = 0; ExifTagTable[i].title; i++)
- if ((ExifTagTable[i].tag == tag) && RECORDED) break;
return _(ExifTagTable[i].title);
}
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
* bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
*/
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
-
- if (ifd >= EXIF_IFD_COUNT) return NULL;
- for (i = 0; ExifTagTable[i].description; i++)
- if ((ExifTagTable[i].tag == tag) && RECORDED) {
- /* GNU gettext acts strangely when given an empty string */
- if (!*ExifTagTable[i].description)
- return "";
- return _(ExifTagTable[i].description);
- }
- return NULL;
+ return _(ExifTagTable[i].description);
}
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_EXIF,
EXIF_IFD_INTEROPERABILITY,
EXIF_IFD_GPS
};
const char *
exif_tag_get_description (ExifTag tag)
{
- return exif_tag_get_stuff (tag, exif_tag_get_description_in_ifd);
+ return exif_tag_get_stuff(tag, exif_tag_get_description_in_ifd);
}
*
* \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_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;
- for (i = 0; ExifTagTable[i].description; i++) {
- if (ExifTagTable[i].tag == tag)
- return ExifTagTable[i].esl[ifd][t];
+ 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;
}
get_support_level_any_type (ExifTag tag, ExifIfd ifd)
{
unsigned int i;
- for (i = 0; ExifTagTable[i].description; 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
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;
projects / platform / upstream / libexif.git / blobdiff