Add libexif to deps/third_party.

libexif/sources/libexif/exif-tag.h

+/*! \file exif-tag.h
+ *  \brief Handling EXIF tags
+ */
+/*
+ * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
+ *
+ * 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 <libexif/exif-ifd.h>
+#include <libexif/exif-data-type.h>
+
+/*! 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__ */