EXIF library (libexif) API: libexif/exif-tag.h Source File

EXIF library (libexif) API 0.6.20

exif-tag.h
Go to the documentation of this file.
1
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
27extern "C" {
28#endif /* __cplusplus */
29
30#include <libexif/exif-ifd.h>
31#include <libexif/exif-data-type.h>
32
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
188 typedef enum {
190 EXIF_SUPPORT_LEVEL_UNKNOWN = 0,
191
193 EXIF_SUPPORT_LEVEL_NOT_RECORDED,
194
196 EXIF_SUPPORT_LEVEL_MANDATORY,
197
199 EXIF_SUPPORT_LEVEL_OPTIONAL
200} ExifSupportLevel;
201
209 ExifTag exif_tag_from_name (const char *name);
210
219const char *exif_tag_get_name_in_ifd (ExifTag tag, ExifIfd ifd);
220
228const char *exif_tag_get_title_in_ifd (ExifTag tag, ExifIfd ifd);
229
237const char *exif_tag_get_description_in_ifd (ExifTag tag, ExifIfd ifd);
238
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
257const char *exif_tag_get_name (ExifTag tag);
258
260const char *exif_tag_get_title (ExifTag tag);
261
263const char *exif_tag_get_description (ExifTag tag);
264
265
266/* For now, do not use these functions. */
267
269 ExifTag exif_tag_table_get_tag (unsigned int n);
270
272const char *exif_tag_table_get_name (unsigned int n);
273
275unsigned int exif_tag_table_count (void);
276
277
278/* Don't use these definitions. They are here for compatibility only. */
279
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__ */
exif_tag_get_description_in_ifd
const char * exif_tag_get_description_in_ifd(ExifTag tag, ExifIfd ifd)
Return a verbose textual description of the given tag when found in the given IFD.
Definition exif-tag.c:998
ExifTag
ExifTag
EXIF tags.
Definition exif-tag.h:34
exif_tag_get_title
const char * exif_tag_get_title(ExifTag tag)
Definition exif-tag.c:1068
exif_tag_get_name_in_ifd
const char * exif_tag_get_name_in_ifd(ExifTag tag, ExifIfd ifd)
Return a textual name of the given tag when found in the given IFD.
Definition exif-tag.c:946
exif_tag_from_name
ExifTag exif_tag_from_name(const char *name)
Return the tag ID given its unique textual name.
Definition exif-tag.c:1082
exif_tag_table_count
unsigned int exif_tag_table_count(void)
Return the number of entries in the EXIF tag table, including the terminating NULL entry.
Definition exif-tag.c:881
exif_tag_get_support_level_in_ifd
ExifSupportLevel exif_tag_get_support_level_in_ifd(ExifTag tag, ExifIfd ifd, ExifDataType t)
Return whether the given tag is mandatory or not in the given IFD and data type according to the EXIF...
Definition exif-tag.c:1171
ExifSupportLevel
ExifSupportLevel
What level of support a tag enjoys in the EXIF standard.
Definition exif-tag.h:188
EXIF_SUPPORT_LEVEL_UNKNOWN
@ EXIF_SUPPORT_LEVEL_UNKNOWN
The meaning of this tag is unknown.
Definition exif-tag.h:190
EXIF_SUPPORT_LEVEL_OPTIONAL
@ EXIF_SUPPORT_LEVEL_OPTIONAL
This tag is optional in the given IFD.
Definition exif-tag.h:199
EXIF_SUPPORT_LEVEL_NOT_RECORDED
@ EXIF_SUPPORT_LEVEL_NOT_RECORDED
This tag is not allowed in the given IFD.
Definition exif-tag.h:193
EXIF_SUPPORT_LEVEL_MANDATORY
@ EXIF_SUPPORT_LEVEL_MANDATORY
This tag is mandatory in the given IFD.
Definition exif-tag.h:196
exif_tag_get_name
const char * exif_tag_get_name(ExifTag tag)
Definition exif-tag.c:1062
exif_tag_get_title_in_ifd
const char * exif_tag_get_title_in_ifd(ExifTag tag, ExifIfd ifd)
Return a textual title of the given tag when found in the given IFD.
Definition exif-tag.c:968
exif_tag_get_description
const char * exif_tag_get_description(ExifTag tag)
Definition exif-tag.c:1074