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_INTEROPERABILITY_INDEX = 0x0001, 36 EXIF_TAG_INTEROPERABILITY_VERSION = 0x0002, 37 EXIF_TAG_NEW_SUBFILE_TYPE = 0x00fe, 38 EXIF_TAG_IMAGE_WIDTH = 0x0100, 39 EXIF_TAG_IMAGE_LENGTH = 0x0101, 40 EXIF_TAG_BITS_PER_SAMPLE = 0x0102, 41 EXIF_TAG_COMPRESSION = 0x0103, 42 EXIF_TAG_PHOTOMETRIC_INTERPRETATION = 0x0106, 43 EXIF_TAG_FILL_ORDER = 0x010a, 44 EXIF_TAG_DOCUMENT_NAME = 0x010d, 45 EXIF_TAG_IMAGE_DESCRIPTION = 0x010e, 46 EXIF_TAG_MAKE = 0x010f, 47 EXIF_TAG_MODEL = 0x0110, 48 EXIF_TAG_STRIP_OFFSETS = 0x0111, 49 EXIF_TAG_ORIENTATION = 0x0112, 50 EXIF_TAG_SAMPLES_PER_PIXEL = 0x0115, 51 EXIF_TAG_ROWS_PER_STRIP = 0x0116, 52 EXIF_TAG_STRIP_BYTE_COUNTS = 0x0117, 53 EXIF_TAG_X_RESOLUTION = 0x011a, 54 EXIF_TAG_Y_RESOLUTION = 0x011b, 55 EXIF_TAG_PLANAR_CONFIGURATION = 0x011c, 56 EXIF_TAG_RESOLUTION_UNIT = 0x0128, 57 EXIF_TAG_TRANSFER_FUNCTION = 0x012d, 58 EXIF_TAG_SOFTWARE = 0x0131, 59 EXIF_TAG_DATE_TIME = 0x0132, 60 EXIF_TAG_ARTIST = 0x013b, 61 EXIF_TAG_WHITE_POINT = 0x013e, 62 EXIF_TAG_PRIMARY_CHROMATICITIES = 0x013f, 63 EXIF_TAG_SUB_IFDS = 0x014a, 64 EXIF_TAG_TRANSFER_RANGE = 0x0156, 65 EXIF_TAG_JPEG_PROC = 0x0200, 66 EXIF_TAG_JPEG_INTERCHANGE_FORMAT = 0x0201, 67 EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH = 0x0202, 68 EXIF_TAG_YCBCR_COEFFICIENTS = 0x0211, 69 EXIF_TAG_YCBCR_SUB_SAMPLING = 0x0212, 70 EXIF_TAG_YCBCR_POSITIONING = 0x0213, 71 EXIF_TAG_REFERENCE_BLACK_WHITE = 0x0214, 72 EXIF_TAG_XML_PACKET = 0x02bc, 73 EXIF_TAG_RELATED_IMAGE_FILE_FORMAT = 0x1000, 74 EXIF_TAG_RELATED_IMAGE_WIDTH = 0x1001, 75 EXIF_TAG_RELATED_IMAGE_LENGTH = 0x1002, 76 EXIF_TAG_CFA_REPEAT_PATTERN_DIM = 0x828d, 77 EXIF_TAG_CFA_PATTERN = 0x828e, 78 EXIF_TAG_BATTERY_LEVEL = 0x828f, 79 EXIF_TAG_COPYRIGHT = 0x8298, 80 EXIF_TAG_EXPOSURE_TIME = 0x829a, 81 EXIF_TAG_FNUMBER = 0x829d, 82 EXIF_TAG_IPTC_NAA = 0x83bb, 83 EXIF_TAG_IMAGE_RESOURCES = 0x8649, 84 EXIF_TAG_EXIF_IFD_POINTER = 0x8769, 85 EXIF_TAG_INTER_COLOR_PROFILE = 0x8773, 86 EXIF_TAG_EXPOSURE_PROGRAM = 0x8822, 87 EXIF_TAG_SPECTRAL_SENSITIVITY = 0x8824, 88 EXIF_TAG_GPS_INFO_IFD_POINTER = 0x8825, 89 EXIF_TAG_ISO_SPEED_RATINGS = 0x8827, 90 EXIF_TAG_OECF = 0x8828, 91 EXIF_TAG_TIME_ZONE_OFFSET = 0x882a, 92 EXIF_TAG_EXIF_VERSION = 0x9000, 93 EXIF_TAG_DATE_TIME_ORIGINAL = 0x9003, 94 EXIF_TAG_DATE_TIME_DIGITIZED = 0x9004, 95 EXIF_TAG_COMPONENTS_CONFIGURATION = 0x9101, 96 EXIF_TAG_COMPRESSED_BITS_PER_PIXEL = 0x9102, 97 EXIF_TAG_SHUTTER_SPEED_VALUE = 0x9201, 98 EXIF_TAG_APERTURE_VALUE = 0x9202, 99 EXIF_TAG_BRIGHTNESS_VALUE = 0x9203, 100 EXIF_TAG_EXPOSURE_BIAS_VALUE = 0x9204, 101 EXIF_TAG_MAX_APERTURE_VALUE = 0x9205, 102 EXIF_TAG_SUBJECT_DISTANCE = 0x9206, 103 EXIF_TAG_METERING_MODE = 0x9207, 104 EXIF_TAG_LIGHT_SOURCE = 0x9208, 105 EXIF_TAG_FLASH = 0x9209, 106 EXIF_TAG_FOCAL_LENGTH = 0x920a, 107 EXIF_TAG_SUBJECT_AREA = 0x9214, 108 EXIF_TAG_TIFF_EP_STANDARD_ID = 0x9216, 109 EXIF_TAG_MAKER_NOTE = 0x927c, 110 EXIF_TAG_USER_COMMENT = 0x9286, 111 EXIF_TAG_SUB_SEC_TIME = 0x9290, 112 EXIF_TAG_SUB_SEC_TIME_ORIGINAL = 0x9291, 113 EXIF_TAG_SUB_SEC_TIME_DIGITIZED = 0x9292, 114 EXIF_TAG_XP_TITLE = 0x9c9b, 115 EXIF_TAG_XP_COMMENT = 0x9c9c, 116 EXIF_TAG_XP_AUTHOR = 0x9c9d, 117 EXIF_TAG_XP_KEYWORDS = 0x9c9e, 118 EXIF_TAG_XP_SUBJECT = 0x9c9f, 119 EXIF_TAG_FLASH_PIX_VERSION = 0xa000, 120 EXIF_TAG_COLOR_SPACE = 0xa001, 121 EXIF_TAG_PIXEL_X_DIMENSION = 0xa002, 122 EXIF_TAG_PIXEL_Y_DIMENSION = 0xa003, 123 EXIF_TAG_RELATED_SOUND_FILE = 0xa004, 124 EXIF_TAG_INTEROPERABILITY_IFD_POINTER = 0xa005, 125 EXIF_TAG_FLASH_ENERGY = 0xa20b, 126 EXIF_TAG_SPATIAL_FREQUENCY_RESPONSE = 0xa20c, 127 EXIF_TAG_FOCAL_PLANE_X_RESOLUTION = 0xa20e, 128 EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION = 0xa20f, 129 EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT = 0xa210, 130 EXIF_TAG_SUBJECT_LOCATION = 0xa214, 131 EXIF_TAG_EXPOSURE_INDEX = 0xa215, 132 EXIF_TAG_SENSING_METHOD = 0xa217, 133 EXIF_TAG_FILE_SOURCE = 0xa300, 134 EXIF_TAG_SCENE_TYPE = 0xa301, 135 EXIF_TAG_NEW_CFA_PATTERN = 0xa302, 136 EXIF_TAG_CUSTOM_RENDERED = 0xa401, 137 EXIF_TAG_EXPOSURE_MODE = 0xa402, 138 EXIF_TAG_WHITE_BALANCE = 0xa403, 139 EXIF_TAG_DIGITAL_ZOOM_RATIO = 0xa404, 140 EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM = 0xa405, 141 EXIF_TAG_SCENE_CAPTURE_TYPE = 0xa406, 142 EXIF_TAG_GAIN_CONTROL = 0xa407, 143 EXIF_TAG_CONTRAST = 0xa408, 144 EXIF_TAG_SATURATION = 0xa409, 145 EXIF_TAG_SHARPNESS = 0xa40a, 146 EXIF_TAG_DEVICE_SETTING_DESCRIPTION = 0xa40b, 147 EXIF_TAG_SUBJECT_DISTANCE_RANGE = 0xa40c, 148 EXIF_TAG_IMAGE_UNIQUE_ID = 0xa420, 149 EXIF_TAG_GAMMA = 0xa500, 150 EXIF_TAG_PRINT_IMAGE_MATCHING = 0xc4a5, 151 EXIF_TAG_PADDING = 0xea1c 152 } ExifTag; 153 154 /* GPS tags overlap with above ones. */ 155 #define EXIF_TAG_GPS_VERSION_ID 0x0000 156 #define EXIF_TAG_GPS_LATITUDE_REF 0x0001 /* INTEROPERABILITY_INDEX */ 157 #define EXIF_TAG_GPS_LATITUDE 0x0002 /* INTEROPERABILITY_VERSION */ 158 #define EXIF_TAG_GPS_LONGITUDE_REF 0x0003 159 #define EXIF_TAG_GPS_LONGITUDE 0x0004 160 #define EXIF_TAG_GPS_ALTITUDE_REF 0x0005 161 #define EXIF_TAG_GPS_ALTITUDE 0x0006 162 #define EXIF_TAG_GPS_TIME_STAMP 0x0007 163 #define EXIF_TAG_GPS_SATELLITES 0x0008 164 #define EXIF_TAG_GPS_STATUS 0x0009 165 #define EXIF_TAG_GPS_MEASURE_MODE 0x000a 166 #define EXIF_TAG_GPS_DOP 0x000b 167 #define EXIF_TAG_GPS_SPEED_REF 0x000c 168 #define EXIF_TAG_GPS_SPEED 0x000d 169 #define EXIF_TAG_GPS_TRACK_REF 0x000e 170 #define EXIF_TAG_GPS_TRACK 0x000f 171 #define EXIF_TAG_GPS_IMG_DIRECTION_REF 0x0010 172 #define EXIF_TAG_GPS_IMG_DIRECTION 0x0011 173 #define EXIF_TAG_GPS_MAP_DATUM 0x0012 174 #define EXIF_TAG_GPS_DEST_LATITUDE_REF 0x0013 175 #define EXIF_TAG_GPS_DEST_LATITUDE 0x0014 176 #define EXIF_TAG_GPS_DEST_LONGITUDE_REF 0x0015 177 #define EXIF_TAG_GPS_DEST_LONGITUDE 0x0016 178 #define EXIF_TAG_GPS_DEST_BEARING_REF 0x0017 179 #define EXIF_TAG_GPS_DEST_BEARING 0x0018 180 #define EXIF_TAG_GPS_DEST_DISTANCE_REF 0x0019 181 #define EXIF_TAG_GPS_DEST_DISTANCE 0x001a 182 #define EXIF_TAG_GPS_PROCESSING_METHOD 0x001b 183 #define EXIF_TAG_GPS_AREA_INFORMATION 0x001c 184 #define EXIF_TAG_GPS_DATE_STAMP 0x001d 185 #define EXIF_TAG_GPS_DIFFERENTIAL 0x001e 186 187 /*! What level of support a tag enjoys in the EXIF standard */ 188 typedef enum { 189 /*! The meaning of this tag is unknown */ 190 EXIF_SUPPORT_LEVEL_UNKNOWN = 0, 191 192 /*! This tag is not allowed in the given IFD */ 193 EXIF_SUPPORT_LEVEL_NOT_RECORDED, 194 195 /*! This tag is mandatory in the given IFD */ 196 EXIF_SUPPORT_LEVEL_MANDATORY, 197 198 /*! This tag is optional in the given IFD */ 199 EXIF_SUPPORT_LEVEL_OPTIONAL 200 } ExifSupportLevel; 201 202 /*! Return the tag ID given its unique textual name. 203 * 204 * \param[in] name tag name 205 * \return tag ID, or 0 if tag not found 206 * \note The tag not found value cannot be distinguished from a legitimate 207 * tag number 0. 208 */ 209 ExifTag exif_tag_from_name (const char *name); 210 211 /*! Return a textual name of the given tag when found in the given IFD. The 212 * name is a short, unique, non-localized text string containing only 213 * US-ASCII alphanumeric characters. 214 * 215 * \param[in] tag EXIF tag 216 * \param[in] ifd IFD 217 * \return textual name of the tag, or NULL if the tag is unknown 218 */ 219 const char *exif_tag_get_name_in_ifd (ExifTag tag, ExifIfd ifd); 220 221 /*! Return a textual title of the given tag when found in the given IFD. 222 * The title is a short, localized description of the tag. 223 * 224 * \param[in] tag EXIF tag 225 * \param[in] ifd IFD 226 * \return textual title of the tag, or NULL if the tag is unknown 227 */ 228 const char *exif_tag_get_title_in_ifd (ExifTag tag, ExifIfd ifd); 229 230 /*! Return a verbose textual description of the given tag when found in the 231 * given IFD. The description is a verbose, localized description of the tag. 232 * 233 * \param[in] tag EXIF tag 234 * \param[in] ifd IFD 235 * \return textual description of the tag, or NULL if the tag is unknown 236 */ 237 const char *exif_tag_get_description_in_ifd (ExifTag tag, ExifIfd ifd); 238 239 /*! Return whether the given tag is mandatory or not in the given IFD and 240 * data type according to the EXIF specification. If the IFD given is 241 * EXIF_IFD_COUNT, the result is EXIF_SUPPORT_LEVEL_UNKNOWN. If the data 242 * type is EXIF_DATA_TYPE_UNKNOWN, the result is 243 * EXIF_SUPPORT_LEVEL_UNKNOWN unless the support level is the same for 244 * all data types. 245 * 246 * \param[in] tag EXIF tag 247 * \param[in] ifd IFD or EXIF_IFD_COUNT 248 * \param[in] t data type or EXIF_DATA_TYPE_UNKNOWN 249 * \return the level of support for this tag 250 */ 251 ExifSupportLevel exif_tag_get_support_level_in_ifd (ExifTag tag, ExifIfd ifd, 252 ExifDataType t); 253 254 /* Don't use these functions. They are here for compatibility only. */ 255 256 /*! \deprecated Use #exif_tag_get_name_in_ifd instead */ 257 const char *exif_tag_get_name (ExifTag tag); 258 259 /*! \deprecated Use #exif_tag_get_title_in_ifd instead */ 260 const char *exif_tag_get_title (ExifTag tag); 261 262 /*! \deprecated Use #exif_tag_get_description_in_ifd instead */ 263 const char *exif_tag_get_description (ExifTag tag); 264 265 266 /* For now, do not use these functions. */ 267 268 /*! \internal */ 269 ExifTag exif_tag_table_get_tag (unsigned int n); 270 271 /*! \internal */ 272 const char *exif_tag_table_get_name (unsigned int n); 273 274 /*! \internal */ 275 unsigned int exif_tag_table_count (void); 276 277 278 /* Don't use these definitions. They are here for compatibility only. */ 279 280 /*! \deprecated Use EXIF_TAG_PRINT_IMAGE_MATCHING instead. */ 281 #define EXIF_TAG_UNKNOWN_C4A5 EXIF_TAG_PRINT_IMAGE_MATCHING 282 283 #ifdef __cplusplus 284 } 285 #endif /* __cplusplus */ 286 287 #endif /* __EXIF_TAG_H__ */ 288