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