1 /*! \file exif-tag.h 2 * \brief Handling EXIF tags 3 */ 4 /* 5 * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net> 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, write to the 19 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301 USA. 21 */ 22 23 #ifndef __EXIF_TAG_H__ 24 #define __EXIF_TAG_H__ 25 26 #ifdef __cplusplus 27 extern "C" { 28 #endif /* __cplusplus */ 29 30 #include <libexif/exif-ifd.h> 31 #include <libexif/exif-data-type.h> 32 33 /*! EXIF tags */ 34 typedef enum { 35 EXIF_TAG_GPS_VERSION_ID = 0x0000, 36 EXIF_TAG_GPS_LATITUDE_REF = 0x0001, /* INTEROPERABILITY_INDEX */ 37 EXIF_TAG_GPS_LATITUDE = 0x0002, /* INTEROPERABILITY_VERSION */ 38 EXIF_TAG_GPS_LONGITUDE_REF = 0x0003, 39 EXIF_TAG_GPS_LONGITUDE = 0x0004, 40 EXIF_TAG_GPS_ALTITUDE_REF = 0x0005, 41 EXIF_TAG_GPS_ALTITUDE = 0x0006, 42 EXIF_TAG_GPS_TIME_STAMP = 0x0007, 43 EXIF_TAG_GPS_SATELLITES = 0x0008, 44 EXIF_TAG_GPS_STATUS = 0x0009, 45 EXIF_TAG_GPS_MEASURE_MODE = 0x000a, 46 EXIF_TAG_GPS_DOP = 0x000b, 47 EXIF_TAG_GPS_SPEED_REF = 0x000c, 48 EXIF_TAG_GPS_SPEED = 0x000d, 49 EXIF_TAG_GPS_TRACK_REF = 0x000e, 50 EXIF_TAG_GPS_TRACK = 0x000f, 51 EXIF_TAG_GPS_IMG_DIRECTION_REF = 0x0010, 52 EXIF_TAG_GPS_IMG_DIRECTION = 0x0011, 53 EXIF_TAG_GPS_MAP_DATUM = 0x0012, 54 EXIF_TAG_GPS_DEST_LATITUDE_REF = 0x0013, 55 EXIF_TAG_GPS_DEST_LATITUDE = 0x0014, 56 EXIF_TAG_GPS_DEST_LONGITUDE_REF = 0x0015, 57 EXIF_TAG_GPS_DEST_LONGITUDE = 0x0016, 58 EXIF_TAG_GPS_DEST_BEARING_REF = 0x0017, 59 EXIF_TAG_GPS_DEST_BEARING = 0x0018, 60 EXIF_TAG_GPS_DEST_DISTANCE_REF = 0x0019, 61 EXIF_TAG_GPS_DEST_DISTANCE = 0x001a, 62 EXIF_TAG_GPS_PROCESSING_METHOD = 0x001b, 63 EXIF_TAG_GPS_AREA_INFORMATION = 0x001c, 64 EXIF_TAG_GPS_DATE_STAMP = 0x001d, 65 EXIF_TAG_GPS_DIFFERENTIAL = 0x001e, 66 EXIF_TAG_GPS_H_POSITIONING_ERROR = 0x001f, 67 EXIF_TAG_INTEROPERABILITY_INDEX = 0x0001, 68 EXIF_TAG_INTEROPERABILITY_VERSION = 0x0002, 69 EXIF_TAG_NEW_SUBFILE_TYPE = 0x00fe, 70 EXIF_TAG_IMAGE_WIDTH = 0x0100, 71 EXIF_TAG_IMAGE_LENGTH = 0x0101, 72 EXIF_TAG_BITS_PER_SAMPLE = 0x0102, 73 EXIF_TAG_COMPRESSION = 0x0103, 74 EXIF_TAG_PHOTOMETRIC_INTERPRETATION = 0x0106, 75 EXIF_TAG_FILL_ORDER = 0x010a, 76 EXIF_TAG_DOCUMENT_NAME = 0x010d, 77 EXIF_TAG_IMAGE_DESCRIPTION = 0x010e, 78 EXIF_TAG_MAKE = 0x010f, 79 EXIF_TAG_MODEL = 0x0110, 80 EXIF_TAG_STRIP_OFFSETS = 0x0111, 81 EXIF_TAG_ORIENTATION = 0x0112, 82 EXIF_TAG_SAMPLES_PER_PIXEL = 0x0115, 83 EXIF_TAG_ROWS_PER_STRIP = 0x0116, 84 EXIF_TAG_STRIP_BYTE_COUNTS = 0x0117, 85 EXIF_TAG_X_RESOLUTION = 0x011a, 86 EXIF_TAG_Y_RESOLUTION = 0x011b, 87 EXIF_TAG_PLANAR_CONFIGURATION = 0x011c, 88 EXIF_TAG_RESOLUTION_UNIT = 0x0128, 89 EXIF_TAG_TRANSFER_FUNCTION = 0x012d, 90 EXIF_TAG_SOFTWARE = 0x0131, 91 EXIF_TAG_DATE_TIME = 0x0132, 92 EXIF_TAG_ARTIST = 0x013b, 93 EXIF_TAG_WHITE_POINT = 0x013e, 94 EXIF_TAG_PRIMARY_CHROMATICITIES = 0x013f, 95 EXIF_TAG_SUB_IFDS = 0x014a, 96 EXIF_TAG_TRANSFER_RANGE = 0x0156, 97 EXIF_TAG_JPEG_PROC = 0x0200, 98 EXIF_TAG_JPEG_INTERCHANGE_FORMAT = 0x0201, 99 EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH = 0x0202, 100 EXIF_TAG_YCBCR_COEFFICIENTS = 0x0211, 101 EXIF_TAG_YCBCR_SUB_SAMPLING = 0x0212, 102 EXIF_TAG_YCBCR_POSITIONING = 0x0213, 103 EXIF_TAG_REFERENCE_BLACK_WHITE = 0x0214, 104 EXIF_TAG_XML_PACKET = 0x02bc, 105 EXIF_TAG_RELATED_IMAGE_FILE_FORMAT = 0x1000, 106 EXIF_TAG_RELATED_IMAGE_WIDTH = 0x1001, 107 EXIF_TAG_RELATED_IMAGE_LENGTH = 0x1002, 108 EXIF_TAG_CFA_REPEAT_PATTERN_DIM = 0x828d, 109 EXIF_TAG_CFA_PATTERN = 0x828e, 110 EXIF_TAG_BATTERY_LEVEL = 0x828f, 111 EXIF_TAG_COPYRIGHT = 0x8298, 112 EXIF_TAG_EXPOSURE_TIME = 0x829a, 113 EXIF_TAG_FNUMBER = 0x829d, 114 EXIF_TAG_IPTC_NAA = 0x83bb, 115 EXIF_TAG_IMAGE_RESOURCES = 0x8649, 116 EXIF_TAG_EXIF_IFD_POINTER = 0x8769, 117 EXIF_TAG_INTER_COLOR_PROFILE = 0x8773, 118 EXIF_TAG_EXPOSURE_PROGRAM = 0x8822, 119 EXIF_TAG_SPECTRAL_SENSITIVITY = 0x8824, 120 EXIF_TAG_GPS_INFO_IFD_POINTER = 0x8825, 121 EXIF_TAG_ISO_SPEED_RATINGS = 0x8827, 122 EXIF_TAG_OECF = 0x8828, 123 EXIF_TAG_TIME_ZONE_OFFSET = 0x882a, 124 EXIF_TAG_EXIF_VERSION = 0x9000, 125 EXIF_TAG_DATE_TIME_ORIGINAL = 0x9003, 126 EXIF_TAG_DATE_TIME_DIGITIZED = 0x9004, 127 EXIF_TAG_COMPONENTS_CONFIGURATION = 0x9101, 128 EXIF_TAG_COMPRESSED_BITS_PER_PIXEL = 0x9102, 129 EXIF_TAG_SHUTTER_SPEED_VALUE = 0x9201, 130 EXIF_TAG_APERTURE_VALUE = 0x9202, 131 EXIF_TAG_BRIGHTNESS_VALUE = 0x9203, 132 EXIF_TAG_EXPOSURE_BIAS_VALUE = 0x9204, 133 EXIF_TAG_MAX_APERTURE_VALUE = 0x9205, 134 EXIF_TAG_SUBJECT_DISTANCE = 0x9206, 135 EXIF_TAG_METERING_MODE = 0x9207, 136 EXIF_TAG_LIGHT_SOURCE = 0x9208, 137 EXIF_TAG_FLASH = 0x9209, 138 EXIF_TAG_FOCAL_LENGTH = 0x920a, 139 EXIF_TAG_SUBJECT_AREA = 0x9214, 140 EXIF_TAG_TIFF_EP_STANDARD_ID = 0x9216, 141 EXIF_TAG_MAKER_NOTE = 0x927c, 142 EXIF_TAG_USER_COMMENT = 0x9286, 143 EXIF_TAG_SUB_SEC_TIME = 0x9290, 144 EXIF_TAG_SUB_SEC_TIME_ORIGINAL = 0x9291, 145 EXIF_TAG_SUB_SEC_TIME_DIGITIZED = 0x9292, 146 EXIF_TAG_XP_TITLE = 0x9c9b, 147 EXIF_TAG_XP_COMMENT = 0x9c9c, 148 EXIF_TAG_XP_AUTHOR = 0x9c9d, 149 EXIF_TAG_XP_KEYWORDS = 0x9c9e, 150 EXIF_TAG_XP_SUBJECT = 0x9c9f, 151 EXIF_TAG_FLASH_PIX_VERSION = 0xa000, 152 EXIF_TAG_COLOR_SPACE = 0xa001, 153 EXIF_TAG_PIXEL_X_DIMENSION = 0xa002, 154 EXIF_TAG_PIXEL_Y_DIMENSION = 0xa003, 155 EXIF_TAG_RELATED_SOUND_FILE = 0xa004, 156 EXIF_TAG_INTEROPERABILITY_IFD_POINTER = 0xa005, 157 EXIF_TAG_FLASH_ENERGY = 0xa20b, 158 EXIF_TAG_SPATIAL_FREQUENCY_RESPONSE = 0xa20c, 159 EXIF_TAG_FOCAL_PLANE_X_RESOLUTION = 0xa20e, 160 EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION = 0xa20f, 161 EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT = 0xa210, 162 EXIF_TAG_SUBJECT_LOCATION = 0xa214, 163 EXIF_TAG_EXPOSURE_INDEX = 0xa215, 164 EXIF_TAG_SENSING_METHOD = 0xa217, 165 EXIF_TAG_FILE_SOURCE = 0xa300, 166 EXIF_TAG_SCENE_TYPE = 0xa301, 167 EXIF_TAG_NEW_CFA_PATTERN = 0xa302, 168 EXIF_TAG_CUSTOM_RENDERED = 0xa401, 169 EXIF_TAG_EXPOSURE_MODE = 0xa402, 170 EXIF_TAG_WHITE_BALANCE = 0xa403, 171 EXIF_TAG_DIGITAL_ZOOM_RATIO = 0xa404, 172 EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM = 0xa405, 173 EXIF_TAG_SCENE_CAPTURE_TYPE = 0xa406, 174 EXIF_TAG_GAIN_CONTROL = 0xa407, 175 EXIF_TAG_CONTRAST = 0xa408, 176 EXIF_TAG_SATURATION = 0xa409, 177 EXIF_TAG_SHARPNESS = 0xa40a, 178 EXIF_TAG_DEVICE_SETTING_DESCRIPTION = 0xa40b, 179 EXIF_TAG_SUBJECT_DISTANCE_RANGE = 0xa40c, 180 EXIF_TAG_IMAGE_UNIQUE_ID = 0xa420, 181 EXIF_TAG_CAMERA_OWNER_NAME = 0xa430, 182 EXIF_TAG_BODY_SERIAL_NUMBER = 0xa431, 183 EXIF_TAG_LENS_SPECIFICATION = 0xa432, 184 EXIF_TAG_LENS_MAKE = 0xa433, 185 EXIF_TAG_LENS_MODEL = 0xa434, 186 EXIF_TAG_LENS_SERIAL_NUMBER = 0xa435, 187 EXIF_TAG_COMPOSITE_IMAGE = 0xa460, 188 EXIF_TAG_SOURCE_IMAGE_NUMBER_OF_COMPOSITE_IMAGE = 0xa461, 189 EXIF_TAG_SOURCE_EXPOSURE_TIMES_OF_COMPOSITE_IMAGE = 0xa462, 190 EXIF_TAG_GAMMA = 0xa500, 191 EXIF_TAG_PRINT_IMAGE_MATCHING = 0xc4a5, 192 EXIF_TAG_PADDING = 0xea1c 193 } ExifTag; 194 195 /* GPS tags overlap with above ones. */ 196 197 198 /*! What level of support a tag enjoys in the EXIF standard */ 199 typedef enum { 200 /*! The meaning of this tag is unknown */ 201 EXIF_SUPPORT_LEVEL_UNKNOWN = 0, 202 203 /*! This tag is not allowed in the given IFD */ 204 EXIF_SUPPORT_LEVEL_NOT_RECORDED, 205 206 /*! This tag is mandatory in the given IFD */ 207 EXIF_SUPPORT_LEVEL_MANDATORY, 208 209 /*! This tag is optional in the given IFD */ 210 EXIF_SUPPORT_LEVEL_OPTIONAL 211 } ExifSupportLevel; 212 213 /*! Return the tag ID given its unique textual name. 214 * 215 * \param[in] name tag name 216 * \return tag ID, or 0 if tag not found 217 * \note The tag not found value cannot be distinguished from a legitimate 218 * tag number 0. 219 */ 220 ExifTag exif_tag_from_name (const char *name); 221 222 /*! Return a textual name of the given tag when found in the given IFD. The 223 * name is a short, unique, non-localized text string containing only 224 * US-ASCII alphanumeric characters. 225 * 226 * \param[in] tag EXIF tag 227 * \param[in] ifd IFD 228 * \return textual name of the tag, or NULL if the tag is unknown 229 */ 230 const char *exif_tag_get_name_in_ifd (ExifTag tag, ExifIfd ifd); 231 232 /*! Return a textual title of the given tag when found in the given IFD. 233 * The title is a short, localized description of the tag. 234 * 235 * \param[in] tag EXIF tag 236 * \param[in] ifd IFD 237 * \return textual title of the tag, or NULL if the tag is unknown 238 */ 239 const char *exif_tag_get_title_in_ifd (ExifTag tag, ExifIfd ifd); 240 241 /*! Return a verbose textual description of the given tag when found in the 242 * given IFD. The description is a verbose, localized description of the tag. 243 * 244 * \param[in] tag EXIF tag 245 * \param[in] ifd IFD 246 * \return textual description of the tag, or NULL if the tag is unknown 247 */ 248 const char *exif_tag_get_description_in_ifd (ExifTag tag, ExifIfd ifd); 249 250 /*! Return whether the given tag is mandatory or not in the given IFD and 251 * data type according to the EXIF specification. If the IFD given is 252 * EXIF_IFD_COUNT, the result is EXIF_SUPPORT_LEVEL_UNKNOWN. If the data 253 * type is EXIF_DATA_TYPE_UNKNOWN, the result is 254 * EXIF_SUPPORT_LEVEL_UNKNOWN unless the support level is the same for 255 * all data types. 256 * 257 * \param[in] tag EXIF tag 258 * \param[in] ifd IFD or EXIF_IFD_COUNT 259 * \param[in] t data type or EXIF_DATA_TYPE_UNKNOWN 260 * \return the level of support for this tag 261 */ 262 ExifSupportLevel exif_tag_get_support_level_in_ifd (ExifTag tag, ExifIfd ifd, 263 ExifDataType t); 264 265 /* Don't use these functions. They are here for compatibility only. */ 266 267 /*! \deprecated Use #exif_tag_get_name_in_ifd instead */ 268 const char *exif_tag_get_name (ExifTag tag); 269 270 /*! \deprecated Use #exif_tag_get_title_in_ifd instead */ 271 const char *exif_tag_get_title (ExifTag tag); 272 273 /*! \deprecated Use #exif_tag_get_description_in_ifd instead */ 274 const char *exif_tag_get_description (ExifTag tag); 275 276 277 /* For now, do not use these functions. */ 278 279 /*! \internal */ 280 ExifTag exif_tag_table_get_tag (unsigned int n); 281 282 /*! \internal */ 283 const char *exif_tag_table_get_name (unsigned int n); 284 285 /*! \internal */ 286 unsigned int exif_tag_table_count (void); 287 288 289 /* Don't use these definitions. They are here for compatibility only. */ 290 291 /*! \deprecated Use EXIF_TAG_PRINT_IMAGE_MATCHING instead. */ 292 #define EXIF_TAG_UNKNOWN_C4A5 EXIF_TAG_PRINT_IMAGE_MATCHING 293 294 #ifdef __cplusplus 295 } 296 #endif /* __cplusplus */ 297 298 #endif /* __EXIF_TAG_H__ */ 299