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 /*
  * Copyright (c) 1988-1997 Sam Leffler
  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
  *
  * Permission to use, copy, modify, distribute, and sell this software and
  * its documentation for any purpose is hereby granted without fee, provided
  * that (i) the above copyright notices and this permission notice appear in
  * all copies of the software and related documentation, and (ii) the names of
  * Sam Leffler and Silicon Graphics may not be used in any advertising or
  * publicity relating to the software without the specific, prior written
  * permission of Sam Leffler and Silicon Graphics.
  *
  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  *
  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  * OF THIS SOFTWARE.
  */
 
 #ifndef _TIFF_
 #define _TIFF_
 
 #include "tiffconf.h"
 
 /*
  * Tag Image File Format (TIFF)
  *
  * Based on Rev 6.0 from:
  *    Developer's Desk
  *    Aldus Corporation
  *    411 First Ave. South
  *    Suite 200
  *    Seattle, WA  98104
  *    206-622-5500
  *
  *    (http://partners.adobe.com/asn/developer/PDFS/TN/TIFF6.pdf)
  *
  * For BigTIFF design notes see the following links
  *    http://www.remotesensing.org/libtiff/bigtiffdesign.html
  *    http://www.awaresystems.be/imaging/tiff/bigtiff.html
  */
 
 #define TIFF_VERSION_CLASSIC 42
 #define TIFF_VERSION_BIG 43
 
 #define TIFF_BIGENDIAN 0x4d4d
 #define TIFF_LITTLEENDIAN 0x4949
 #define MDI_LITTLEENDIAN 0x5045
 #define MDI_BIGENDIAN 0x4550
 
 /*
  * Intrinsic data types required by the file format:
  *
  * 8-bit quantities     int8_t/uint_8_t
  * 16-bit quantities    int16_t/uint_16_t
  * 32-bit quantities    int32_t/uint_32_t
  * 64-bit quantities    int64_t/uint_64_t
  * strings              unsigned char*
  */
 #ifdef __GNUC__
 #define TIFF_GCC_DEPRECATED __attribute__((deprecated))
 #else
 #define TIFF_GCC_DEPRECATED
 #endif
 #ifdef _MSC_VER
 #define TIFF_MSC_DEPRECATED                                                    \
     __declspec(deprecated("libtiff type deprecated; please use corresponding " \
                           "C99 stdint.h type"))
 #else
 #define TIFF_MSC_DEPRECATED
 #endif
 
 #ifndef TIFF_DISABLE_DEPRECATED
 typedef TIFF_MSC_DEPRECATED int8_t int8 TIFF_GCC_DEPRECATED;
 typedef TIFF_MSC_DEPRECATED uint8_t uint8 TIFF_GCC_DEPRECATED;
 
 typedef TIFF_MSC_DEPRECATED int16_t int16 TIFF_GCC_DEPRECATED;
 typedef TIFF_MSC_DEPRECATED uint16_t uint16 TIFF_GCC_DEPRECATED;
 
 typedef TIFF_MSC_DEPRECATED int32_t int32 TIFF_GCC_DEPRECATED;
 typedef TIFF_MSC_DEPRECATED uint32_t uint32 TIFF_GCC_DEPRECATED;
 
 typedef TIFF_MSC_DEPRECATED int64_t int64 TIFF_GCC_DEPRECATED;
 typedef TIFF_MSC_DEPRECATED uint64_t uint64 TIFF_GCC_DEPRECATED;
 #endif /* TIFF_DISABLE_DEPRECATED */
 
 /*
  * Some types as promoted in a variable argument list
  * We use uint16_vap rather then directly using int, because this way
  * we document the type we actually want to pass through, conceptually,
  * rather then confusing the issue by merely stating the type it gets
  * promoted to
  */
 
 typedef int uint16_vap;
 
 /*
  * TIFF header.
  */
 typedef struct
 {
     uint16_t tiff_magic;   /* magic number (defines byte order) */
     uint16_t tiff_version; /* TIFF version number */
 } TIFFHeaderCommon;
 typedef struct
 {
     uint16_t tiff_magic;   /* magic number (defines byte order) */
     uint16_t tiff_version; /* TIFF version number */
     uint32_t tiff_diroff;  /* byte offset to first directory */
 } TIFFHeaderClassic;
 typedef struct
 {
     uint16_t tiff_magic;      /* magic number (defines byte order) */
     uint16_t tiff_version;    /* TIFF version number */
     uint16_t tiff_offsetsize; /* size of offsets, should be 8 */
     uint16_t tiff_unused;     /* unused word, should be 0 */
     uint64_t tiff_diroff;     /* byte offset to first directory */
 } TIFFHeaderBig;
 
 /*
  * NB: In the comments below,
  *  - items marked with a + are obsoleted by revision 5.0,
  *  - items marked with a ! are introduced in revision 6.0.
  *  - items marked with a % are introduced post revision 6.0.
  *  - items marked with a $ are obsoleted by revision 6.0.
  *  - items marked with a & are introduced by Adobe DNG specification.
  */
 
 /*
  * Tag data type information.
  *
  * Note: RATIONALs are the ratio of two 32-bit integer values.
  *--:
  * Note2: TIFF_IFD8 data type is used in tiffFields[]-tag definition in order to
  distinguish the write-handling of those tags between ClassicTIFF and BigTiff:
                   For ClassicTIFF libtiff writes a 32-bit value and the TIFF_IFD
  type-id into the file For BigTIFF     libtiff writes a 64-bit value and the
  TIFF_IFD8 type-id into the file
  */
 typedef enum
 {
     TIFF_NOTYPE = 0,     /* placeholder */
     TIFF_BYTE = 1,       /* 8-bit unsigned integer */
     TIFF_ASCII = 2,      /* 8-bit bytes w/ last byte null */
     TIFF_SHORT = 3,      /* 16-bit unsigned integer */
     TIFF_LONG = 4,       /* 32-bit unsigned integer */
     TIFF_RATIONAL = 5,   /* 64-bit unsigned fraction */
     TIFF_SBYTE = 6,      /* !8-bit signed integer */
     TIFF_UNDEFINED = 7,  /* !8-bit untyped data */
     TIFF_SSHORT = 8,     /* !16-bit signed integer */
     TIFF_SLONG = 9,      /* !32-bit signed integer */
     TIFF_SRATIONAL = 10, /* !64-bit signed fraction */
     TIFF_FLOAT = 11,     /* !32-bit IEEE floating point */
     TIFF_DOUBLE = 12,    /* !64-bit IEEE floating point */
     TIFF_IFD = 13,       /* %32-bit unsigned integer (offset) */
     TIFF_LONG8 = 16,     /* BigTIFF 64-bit unsigned integer */
     TIFF_SLONG8 = 17,    /* BigTIFF 64-bit signed integer */
     TIFF_IFD8 = 18       /* BigTIFF 64-bit unsigned integer (offset) */
 } TIFFDataType;
 
 /*
  * TIFF Tag Definitions.
  */
 /* clang-format off */   /* for better readability of tag comments */
 #define TIFFTAG_SUBFILETYPE 254       /* subfile data descriptor */
 #define FILETYPE_REDUCEDIMAGE 0x1     /* reduced resolution version */
 #define FILETYPE_PAGE 0x2             /* one page of many */
 #define FILETYPE_MASK 0x4             /* transparency mask */
 #define TIFFTAG_OSUBFILETYPE 255      /* +kind of data in subfile */
 #define OFILETYPE_IMAGE 1             /* full resolution image data */
 #define OFILETYPE_REDUCEDIMAGE 2      /* reduced size image data */
 #define OFILETYPE_PAGE 3              /* one page of many */
 #define TIFFTAG_IMAGEWIDTH 256        /* image width in pixels */
 #define TIFFTAG_IMAGELENGTH 257       /* image height in pixels */
 #define TIFFTAG_BITSPERSAMPLE 258     /* bits per channel (sample) */
 #define TIFFTAG_COMPRESSION 259       /* data compression technique */
 #define COMPRESSION_NONE 1            /* dump mode */
 #define COMPRESSION_CCITTRLE 2        /* CCITT modified Huffman RLE */
 #define COMPRESSION_CCITTFAX3 3       /* CCITT Group 3 fax encoding */
 #define COMPRESSION_CCITT_T4 3        /* CCITT T.4 (TIFF 6 name) */
 #define COMPRESSION_CCITTFAX4 4       /* CCITT Group 4 fax encoding */
 #define COMPRESSION_CCITT_T6 4        /* CCITT T.6 (TIFF 6 name) */
 #define COMPRESSION_LZW 5             /* Lempel-Ziv  & Welch */
 #define COMPRESSION_OJPEG 6           /* !6.0 JPEG */
 #define COMPRESSION_JPEG 7            /* %JPEG DCT compression */
 #define COMPRESSION_T85 9             /* !TIFF/FX T.85 JBIG compression */
 #define COMPRESSION_T43 10            /* !TIFF/FX T.43 colour by layered JBIG compression */
 #define COMPRESSION_NEXT 32766        /* NeXT 2-bit RLE */
 #define COMPRESSION_CCITTRLEW 32771   /* #1 w/ word alignment */
 #define COMPRESSION_PACKBITS 32773    /* Macintosh RLE */
 #define COMPRESSION_THUNDERSCAN 32809 /* ThunderScan RLE */
 /* codes 32895-32898 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */
 #define COMPRESSION_IT8CTPAD 32895 /* IT8 CT w/padding */
 #define COMPRESSION_IT8LW 32896    /* IT8 Linework RLE */
 #define COMPRESSION_IT8MP 32897    /* IT8 Monochrome picture */
 #define COMPRESSION_IT8BL 32898    /* IT8 Binary line art */
 /* compression codes 32908-32911 are reserved for Pixar */
 #define COMPRESSION_PIXARFILM 32908 /* Pixar companded 10bit LZW */
 #define COMPRESSION_PIXARLOG 32909  /* Pixar companded 11bit ZIP */
 #define COMPRESSION_DEFLATE 32946   /* Deflate compression, legacy tag */
 #define COMPRESSION_ADOBE_DEFLATE 8 /* Deflate compression, as recognized by Adobe */
 /* compression code 32947 is reserved for Oceana Matrix <dev@oceana.com> */
 #define COMPRESSION_DCS 32947      /* Kodak DCS encoding */
 #define COMPRESSION_JBIG 34661     /* ISO JBIG */
 #define COMPRESSION_SGILOG 34676   /* SGI Log Luminance RLE */
 #define COMPRESSION_SGILOG24 34677 /* SGI Log 24-bit packed */
 #define COMPRESSION_JP2000 34712   /* Leadtools JPEG2000 */
 #define COMPRESSION_LERC 34887     /* ESRI Lerc codec: https://github.com/Esri/lerc */
 /* compression codes 34887-34889 are reserved for ESRI */
 #define COMPRESSION_LZMA 34925             /* LZMA2 */
 #define COMPRESSION_ZSTD 50000             /* ZSTD: WARNING not registered in Adobe-maintained registry */
 #define COMPRESSION_WEBP 50001             /* WEBP: WARNING not registered in Adobe-maintained registry */
 #define COMPRESSION_JXL 50002              /* JPEGXL: WARNING not registered in Adobe-maintained registry */
 #define TIFFTAG_PHOTOMETRIC 262            /* photometric interpretation */
 #define PHOTOMETRIC_MINISWHITE 0           /* min value is white */
 #define PHOTOMETRIC_MINISBLACK 1           /* min value is black */
 #define PHOTOMETRIC_RGB 2                  /* RGB color model */
 #define PHOTOMETRIC_PALETTE 3              /* color map indexed */
 #define PHOTOMETRIC_MASK 4                 /* $holdout mask */
 #define PHOTOMETRIC_SEPARATED 5            /* !color separations */
 #define PHOTOMETRIC_YCBCR 6                /* !CCIR 601 */
 #define PHOTOMETRIC_CIELAB 8               /* !1976 CIE L*a*b* */
 #define PHOTOMETRIC_ICCLAB 9               /* ICC L*a*b* [Adobe TIFF Technote 4] */
 #define PHOTOMETRIC_ITULAB 10              /* ITU L*a*b* */
 #define PHOTOMETRIC_CFA 32803              /* color filter array */
 #define PHOTOMETRIC_LOGL 32844             /* CIE Log2(L) */
 #define PHOTOMETRIC_LOGLUV 32845           /* CIE Log2(L) (u',v') */
 #define TIFFTAG_THRESHHOLDING 263          /* +thresholding used on data */
 #define THRESHHOLD_BILEVEL 1               /* b&w art scan */
 #define THRESHHOLD_HALFTONE 2              /* or dithered scan */
 #define THRESHHOLD_ERRORDIFFUSE 3          /* usually floyd-steinberg */
 #define TIFFTAG_CELLWIDTH 264              /* +dithering matrix width */
 #define TIFFTAG_CELLLENGTH 265             /* +dithering matrix height */
 #define TIFFTAG_FILLORDER 266              /* data order within a byte */
 #define FILLORDER_MSB2LSB 1                /* most significant -> least */
 #define FILLORDER_LSB2MSB 2                /* least significant -> most */
 #define TIFFTAG_DOCUMENTNAME 269           /* name of doc. image is from */
 #define TIFFTAG_IMAGEDESCRIPTION 270       /* info about image */
 #define TIFFTAG_MAKE 271                   /* scanner manufacturer name */
 #define TIFFTAG_MODEL 272                  /* scanner model name/number */
 #define TIFFTAG_STRIPOFFSETS 273           /* offsets to data strips */
 #define TIFFTAG_ORIENTATION 274            /* +image orientation */
 #define ORIENTATION_TOPLEFT 1              /* row 0 top, col 0 lhs */
 #define ORIENTATION_TOPRIGHT 2             /* row 0 top, col 0 rhs */
 #define ORIENTATION_BOTRIGHT 3             /* row 0 bottom, col 0 rhs */
 #define ORIENTATION_BOTLEFT 4              /* row 0 bottom, col 0 lhs */
 #define ORIENTATION_LEFTTOP 5              /* row 0 lhs, col 0 top */
 #define ORIENTATION_RIGHTTOP 6             /* row 0 rhs, col 0 top */
 #define ORIENTATION_RIGHTBOT 7             /* row 0 rhs, col 0 bottom */
 #define ORIENTATION_LEFTBOT 8              /* row 0 lhs, col 0 bottom */
 #define TIFFTAG_SAMPLESPERPIXEL 277        /* samples per pixel */
 #define TIFFTAG_ROWSPERSTRIP 278           /* rows per strip of data */
 #define TIFFTAG_STRIPBYTECOUNTS 279        /* bytes counts for strips */
 #define TIFFTAG_MINSAMPLEVALUE 280         /* +minimum sample value */
 #define TIFFTAG_MAXSAMPLEVALUE 281         /* +maximum sample value */
 #define TIFFTAG_XRESOLUTION 282            /* pixels/resolution in x */
 #define TIFFTAG_YRESOLUTION 283            /* pixels/resolution in y */
 #define TIFFTAG_PLANARCONFIG 284           /* storage organization */
 #define PLANARCONFIG_CONTIG 1              /* single image plane */
 #define PLANARCONFIG_SEPARATE 2            /* separate planes of data */
 #define TIFFTAG_PAGENAME 285               /* page name image is from */
 #define TIFFTAG_XPOSITION 286              /* x page offset of image lhs */
 #define TIFFTAG_YPOSITION 287              /* y page offset of image lhs */
 #define TIFFTAG_FREEOFFSETS 288            /* +byte offset to free block */
 #define TIFFTAG_FREEBYTECOUNTS 289         /* +sizes of free blocks */
 #define TIFFTAG_GRAYRESPONSEUNIT 290       /* $gray scale curve accuracy */
 #define GRAYRESPONSEUNIT_10S 1             /* tenths of a unit */
 #define GRAYRESPONSEUNIT_100S 2            /* hundredths of a unit */
 #define GRAYRESPONSEUNIT_1000S 3           /* thousandths of a unit */
 #define GRAYRESPONSEUNIT_10000S 4          /* ten-thousandths of a unit */
 #define GRAYRESPONSEUNIT_100000S 5         /* hundred-thousandths */
 #define TIFFTAG_GRAYRESPONSECURVE 291      /* $gray scale response curve */
 #define TIFFTAG_GROUP3OPTIONS 292          /* 32 flag bits */
 #define TIFFTAG_T4OPTIONS 292              /* TIFF 6.0 proper name alias */
 #define GROUP3OPT_2DENCODING 0x1           /* 2-dimensional coding */
 #define GROUP3OPT_UNCOMPRESSED 0x2         /* data not compressed */
 #define GROUP3OPT_FILLBITS 0x4             /* fill to byte boundary */
 #define TIFFTAG_GROUP4OPTIONS 293          /* 32 flag bits */
 #define TIFFTAG_T6OPTIONS 293              /* TIFF 6.0 proper name */
 #define GROUP4OPT_UNCOMPRESSED 0x2         /* data not compressed */
 #define TIFFTAG_RESOLUTIONUNIT 296         /* units of resolutions */
 #define RESUNIT_NONE 1                     /* no meaningful units */
 #define RESUNIT_INCH 2                     /* english */
 #define RESUNIT_CENTIMETER 3               /* metric */
 #define TIFFTAG_PAGENUMBER 297             /* page numbers of multi-page */
 #define TIFFTAG_COLORRESPONSEUNIT 300      /* $color curve accuracy */
 #define COLORRESPONSEUNIT_10S 1            /* tenths of a unit */
 #define COLORRESPONSEUNIT_100S 2           /* hundredths of a unit */
 #define COLORRESPONSEUNIT_1000S 3          /* thousandths of a unit */
 #define COLORRESPONSEUNIT_10000S 4         /* ten-thousandths of a unit */
 #define COLORRESPONSEUNIT_100000S 5        /* hundred-thousandths */
 #define TIFFTAG_TRANSFERFUNCTION 301       /* !colorimetry info */
 #define TIFFTAG_SOFTWARE 305               /* name & release */
 #define TIFFTAG_DATETIME 306               /* creation date and time */
 #define TIFFTAG_ARTIST 315                 /* creator of image */
 #define TIFFTAG_HOSTCOMPUTER 316           /* machine where created */
 #define TIFFTAG_PREDICTOR 317              /* prediction scheme w/ LZW */
 #define PREDICTOR_NONE 1                   /* no prediction scheme used */
 #define PREDICTOR_HORIZONTAL 2             /* horizontal differencing */
 #define PREDICTOR_FLOATINGPOINT 3          /* floating point predictor */
 #define TIFFTAG_WHITEPOINT 318             /* image white point */
 #define TIFFTAG_PRIMARYCHROMATICITIES 319  /* !primary chromaticities */
 #define TIFFTAG_COLORMAP 320               /* RGB map for palette image */
 #define TIFFTAG_HALFTONEHINTS 321          /* !highlight+shadow info */
 #define TIFFTAG_TILEWIDTH 322              /* !tile width in pixels */
 #define TIFFTAG_TILELENGTH 323             /* !tile height in pixels */
 #define TIFFTAG_TILEOFFSETS 324            /* !offsets to data tiles */
 #define TIFFTAG_TILEBYTECOUNTS 325         /* !byte counts for tiles */
 #define TIFFTAG_BADFAXLINES 326            /* lines w/ wrong pixel count */
 #define TIFFTAG_CLEANFAXDATA 327           /* regenerated line info */
 #define CLEANFAXDATA_CLEAN 0               /* no errors detected */
 #define CLEANFAXDATA_REGENERATED 1         /* receiver regenerated lines */
 #define CLEANFAXDATA_UNCLEAN 2             /* uncorrected errors exist */
 #define TIFFTAG_CONSECUTIVEBADFAXLINES 328 /* max consecutive bad lines */
 #define TIFFTAG_SUBIFD 330                 /* subimage descriptors */
 #define TIFFTAG_INKSET 332                 /* !inks in separated image */
 #define INKSET_CMYK 1                      /* !cyan-magenta-yellow-black color */
 #define INKSET_MULTIINK 2                  /* !multi-ink or hi-fi color */
 #define TIFFTAG_INKNAMES 333               /* !ascii names of inks */
 #define TIFFTAG_NUMBEROFINKS 334           /* !number of inks */
 #define TIFFTAG_DOTRANGE 336               /* !0% and 100% dot codes */
 #define TIFFTAG_TARGETPRINTER 337          /* !separation target */
 #define TIFFTAG_EXTRASAMPLES 338           /* !info about extra samples */
 #define EXTRASAMPLE_UNSPECIFIED 0          /* !unspecified data */
 #define EXTRASAMPLE_ASSOCALPHA 1           /* !associated alpha data */
 #define EXTRASAMPLE_UNASSALPHA 2           /* !unassociated alpha data */
 #define TIFFTAG_SAMPLEFORMAT 339           /* !data sample format */
 #define SAMPLEFORMAT_UINT 1                /* !unsigned integer data */
 #define SAMPLEFORMAT_INT 2                 /* !signed integer data */
 #define SAMPLEFORMAT_IEEEFP 3              /* !IEEE floating point data */
 #define SAMPLEFORMAT_VOID 4                /* !untyped data */
 #define SAMPLEFORMAT_COMPLEXINT 5          /* !complex signed int */
 #define SAMPLEFORMAT_COMPLEXIEEEFP 6       /* !complex ieee floating */
 #define TIFFTAG_SMINSAMPLEVALUE 340        /* !variable MinSampleValue */
 #define TIFFTAG_SMAXSAMPLEVALUE 341        /* !variable MaxSampleValue */
 #define TIFFTAG_CLIPPATH 343               /* %ClipPath [Adobe TIFF technote 2] */
 #define TIFFTAG_XCLIPPATHUNITS 344         /* %XClipPathUnits [Adobe TIFF technote 2] */
 #define TIFFTAG_YCLIPPATHUNITS 345         /* %YClipPathUnits [Adobe TIFF technote 2] */
 #define TIFFTAG_INDEXED 346                /* %Indexed [Adobe TIFF Technote 3] */
 #define TIFFTAG_JPEGTABLES 347             /* %JPEG table stream */
 #define TIFFTAG_OPIPROXY 351               /* %OPI Proxy [Adobe TIFF technote] */
 /* Tags 400-435 are from the TIFF/FX spec */
 #define TIFFTAG_GLOBALPARAMETERSIFD 400 /* ! */
 #define TIFFTAG_PROFILETYPE 401         /* ! */
 #define PROFILETYPE_UNSPECIFIED 0       /* ! */
 #define PROFILETYPE_G3_FAX 1            /* ! */
 #define TIFFTAG_FAXPROFILE 402          /* ! */
 #define FAXPROFILE_S 1                  /* !TIFF/FX FAX profile S */
 #define FAXPROFILE_F 2                  /* !TIFF/FX FAX profile F */
 #define FAXPROFILE_J 3                  /* !TIFF/FX FAX profile J */
 #define FAXPROFILE_C 4                  /* !TIFF/FX FAX profile C */
 #define FAXPROFILE_L 5                  /* !TIFF/FX FAX profile L */
 #define FAXPROFILE_M 6                  /* !TIFF/FX FAX profile LM */
 #define TIFFTAG_CODINGMETHODS 403       /* !TIFF/FX coding methods */
 #define CODINGMETHODS_T4_1D (1 << 1)    /* !T.4 1D */
 #define CODINGMETHODS_T4_2D (1 << 2)    /* !T.4 2D */
 #define CODINGMETHODS_T6 (1 << 3)       /* !T.6 */
 #define CODINGMETHODS_T85 (1 << 4)      /* !T.85 JBIG */
 #define CODINGMETHODS_T42 (1 << 5)      /* !T.42 JPEG */
 #define CODINGMETHODS_T43 (1 << 6)      /* !T.43 colour by layered JBIG */
 #define TIFFTAG_VERSIONYEAR 404         /* !TIFF/FX version year */
 #define TIFFTAG_MODENUMBER 405          /* !TIFF/FX mode number */
 #define TIFFTAG_DECODE 433              /* !TIFF/FX decode */
 #define TIFFTAG_IMAGEBASECOLOR 434      /* !TIFF/FX image base colour */
 #define TIFFTAG_T82OPTIONS 435          /* !TIFF/FX T.82 options */
 /*
  * Tags 512-521 are obsoleted by Technical Note #2 which specifies a
  * revised JPEG-in-TIFF scheme.
  */
 #define TIFFTAG_JPEGPROC 512               /* !JPEG processing algorithm */
 #define JPEGPROC_BASELINE 1                /* !baseline sequential */
 #define JPEGPROC_LOSSLESS 14               /* !Huffman coded lossless */
 #define TIFFTAG_JPEGIFOFFSET 513           /* !pointer to SOI marker */
 #define TIFFTAG_JPEGIFBYTECOUNT 514        /* !JFIF stream length */
 #define TIFFTAG_JPEGRESTARTINTERVAL 515    /* !restart interval length */
 #define TIFFTAG_JPEGLOSSLESSPREDICTORS 517 /* !lossless proc predictor */
 #define TIFFTAG_JPEGPOINTTRANSFORM 518     /* !lossless point transform */
 #define TIFFTAG_JPEGQTABLES 519            /* !Q matrix offsets */
 #define TIFFTAG_JPEGDCTABLES 520           /* !DCT table offsets */
 #define TIFFTAG_JPEGACTABLES 521           /* !AC coefficient offsets */
 #define TIFFTAG_YCBCRCOEFFICIENTS 529      /* !RGB -> YCbCr transform */
 #define TIFFTAG_YCBCRSUBSAMPLING 530       /* !YCbCr subsampling factors */
 #define TIFFTAG_YCBCRPOSITIONING 531       /* !subsample positioning */
 #define YCBCRPOSITION_CENTERED 1           /* !as in PostScript Level 2 */
 #define YCBCRPOSITION_COSITED 2            /* !as in CCIR 601-1 */
 #define TIFFTAG_REFERENCEBLACKWHITE 532    /* !colorimetry info */
 #define TIFFTAG_STRIPROWCOUNTS 559         /* !TIFF/FX strip row counts */
 #define TIFFTAG_XMLPACKET 700              /* %XML packet [Adobe XMP Specification, January 2004 */
 #define TIFFTAG_OPIIMAGEID 32781           /* %OPI ImageID [Adobe TIFF technote] */
 /* For eiStream Annotation Specification, Version 1.00.06 see
  * http://web.archive.org/web/20050309141348/http://www.kofile.com/support%20pro/faqs/annospec.htm */
 #define TIFFTAG_TIFFANNOTATIONDATA 32932
 /* tags 32952-32956 are private tags registered to Island Graphics */
 #define TIFFTAG_REFPTS 32953            /* image reference points */
 #define TIFFTAG_REGIONTACKPOINT 32954   /* region-xform tack point */
 #define TIFFTAG_REGIONWARPCORNERS 32955 /* warp quadrilateral */
 #define TIFFTAG_REGIONAFFINE 32956      /* affine transformation mat */
 /* tags 32995-32999 are private tags registered to SGI */
 #define TIFFTAG_MATTEING 32995   /* $use ExtraSamples */
 #define TIFFTAG_DATATYPE 32996   /* $use SampleFormat */
 #define TIFFTAG_IMAGEDEPTH 32997 /* z depth of image */
 #define TIFFTAG_TILEDEPTH 32998  /* z depth/data tile */
 /* tags 33300-33309 are private tags registered to Pixar */
 /*
  * TIFFTAG_PIXAR_IMAGEFULLWIDTH and TIFFTAG_PIXAR_IMAGEFULLLENGTH
  * are set when an image has been cropped out of a larger image.
  * They reflect the size of the original uncropped image.
  * The TIFFTAG_XPOSITION and TIFFTAG_YPOSITION can be used
  * to determine the position of the smaller image in the larger one.
  */
 #define TIFFTAG_PIXAR_IMAGEFULLWIDTH 33300  /* full image size in x */
 #define TIFFTAG_PIXAR_IMAGEFULLLENGTH 33301 /* full image size in y */
 /* Tags 33302-33306 are used to identify special image modes and data
  * used by Pixar's texture formats.
  */
 #define TIFFTAG_PIXAR_TEXTUREFORMAT 33302 /* texture map format */
 #define TIFFTAG_PIXAR_WRAPMODES 33303     /* s & t wrap modes */
 #define TIFFTAG_PIXAR_FOVCOT 33304        /* cotan(fov) for env. maps */
 #define TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN 33305
 #define TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA 33306
 /* tag 33405 is a private tag registered to Eastman Kodak */
 #define TIFFTAG_WRITERSERIALNUMBER 33405  /* device serial number */
 #define TIFFTAG_CFAREPEATPATTERNDIM 33421 /* (alias for TIFFTAG_EP_CFAREPEATPATTERNDIM)*/
 #define TIFFTAG_CFAPATTERN 33422          /* (alias for TIFFTAG_EP_CFAPATTERN) */
 #define TIFFTAG_BATTERYLEVEL 33423        /* (alias for TIFFTAG_EP_BATTERYLEVEL) */
 /* tag 33432 is listed in the 6.0 spec w/ unknown ownership */
 #define TIFFTAG_COPYRIGHT 33432 /* copyright string */
 /* Tags 33445-33452 are used for Molecular Dynamics GEL fileformat,
  * see http://research.stowers-institute.org/mcm/efg/ScientificSoftware/Utility/TiffTags/GEL-FileFormat.pdf
  * (2023: the above web site is unavailable but tags are explained briefly at
  * https://www.awaresystems.be/imaging/tiff/tifftags/docs/gel.html
  */
 #define TIFFTAG_MD_FILETAG 33445    /* Specifies the pixel data format encoding in the GEL file format. */
 #define TIFFTAG_MD_SCALEPIXEL 33446 /* scale factor */
 #define TIFFTAG_MD_COLORTABLE 33447 /* conversion from 16bit to 8bit */
 #define TIFFTAG_MD_LABNAME 33448    /* name of the lab that scanned this file. */
 #define TIFFTAG_MD_SAMPLEINFO 33449 /* information about the scanned GEL sample */
 #define TIFFTAG_MD_PREPDATE 33450   /* information about the date the sample was prepared YY/MM/DD */
 #define TIFFTAG_MD_PREPTIME 33451   /* information about the time the sample was prepared HH:MM*/
 #define TIFFTAG_MD_FILEUNITS 33452  /* Units for data in this file, as used in the GEL file format. */
 /* IPTC TAG from RichTIFF specifications */
 #define TIFFTAG_RICHTIFFIPTC 33723
 #define TIFFTAG_INGR_PACKET_DATA_TAG 33918       /* Intergraph Application specific storage. */
 #define TIFFTAG_INGR_FLAG_REGISTERS 33919        /* Intergraph Application specific flags. */
 #define TIFFTAG_IRASB_TRANSORMATION_MATRIX 33920 /* Originally part of Intergraph's GeoTIFF tags, but likely understood by IrasB only. */
 #define TIFFTAG_MODELTIEPOINTTAG 33922           /* GeoTIFF */
 /* 34016-34029 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */
 #define TIFFTAG_IT8SITE 34016                     /* site name */
 #define TIFFTAG_IT8COLORSEQUENCE 34017            /* color seq. [RGB,CMYK,etc] */
 #define TIFFTAG_IT8HEADER 34018                   /* DDES Header */
 #define TIFFTAG_IT8RASTERPADDING 34019            /* raster scanline padding */
 #define TIFFTAG_IT8BITSPERRUNLENGTH 34020         /* # of bits in short run */
 #define TIFFTAG_IT8BITSPEREXTENDEDRUNLENGTH 34021 /* # of bits in long run */
 #define TIFFTAG_IT8COLORTABLE 34022               /* LW colortable */
 #define TIFFTAG_IT8IMAGECOLORINDICATOR 34023      /* BP/BL image color switch */
 #define TIFFTAG_IT8BKGCOLORINDICATOR 34024        /* BP/BL bg color switch */
 #define TIFFTAG_IT8IMAGECOLORVALUE 34025          /* BP/BL image color value */
 #define TIFFTAG_IT8BKGCOLORVALUE 34026            /* BP/BL bg color value */
 #define TIFFTAG_IT8PIXELINTENSITYRANGE 34027      /* MP pixel intensity value */
 #define TIFFTAG_IT8TRANSPARENCYINDICATOR 34028    /* HC transparency switch */
 #define TIFFTAG_IT8COLORCHARACTERIZATION 34029    /* color character. table */
 #define TIFFTAG_IT8HCUSAGE 34030                  /* HC usage indicator */
 #define TIFFTAG_IT8TRAPINDICATOR 34031            /* Trapping indicator (untrapped=0, trapped=1) */
 #define TIFFTAG_IT8CMYKEQUIVALENT 34032           /* CMYK color equivalents */
 /* tags 34232-34236 are private tags registered to Texas Instruments */
 #define TIFFTAG_FRAMECOUNT 34232             /* Sequence Frame Count */
 #define TIFFTAG_MODELTRANSFORMATIONTAG 34264 /* Used in interchangeable GeoTIFF files */
 /* tag 34377 is private tag registered to Adobe for PhotoShop */
 #define TIFFTAG_PHOTOSHOP 34377
 /* tags 34665, 34853 and 40965 are documented in EXIF specification */
 #define TIFFTAG_EXIFIFD 34665 /* Pointer to EXIF private directory */
 /* tag 34750 is a private tag registered to Adobe? */
 #define TIFFTAG_ICCPROFILE 34675 /* ICC profile data */
 #define TIFFTAG_IMAGELAYER 34732 /* !TIFF/FX image layer information */
 /* tag 34750 is a private tag registered to Pixel Magic */
 #define TIFFTAG_JBIGOPTIONS 34750 /* JBIG options */
 #define TIFFTAG_GPSIFD 34853      /* Pointer to EXIF GPS private directory */
 /* tags 34908-34914 are private tags registered to SGI */
 #define TIFFTAG_FAXRECVPARAMS 34908 /* encoded Class 2 ses. params */
 #define TIFFTAG_FAXSUBADDRESS 34909 /* received SubAddr string */
 #define TIFFTAG_FAXRECVTIME 34910   /* receive time (secs) */
 #define TIFFTAG_FAXDCS 34911        /* encoded fax ses. params, Table 2/T.30 */
 /* tags 37439-37443 are registered to SGI <gregl@sgi.com> */
 #define TIFFTAG_STONITS 37439 /* Sample value to Nits */
 /* tag 34929 is a private tag registered to FedEx */
 #define TIFFTAG_FEDEX_EDR 34929                /* unknown use */
 #define TIFFTAG_IMAGESOURCEDATA 37724          /* http://justsolve.archiveteam.org/wiki/PSD, http://www.adobe.com/devnet-apps/photoshop/fileformatashtml/ */
 #define TIFFTAG_INTEROPERABILITYIFD 40965      /* Pointer to EXIF Interoperability private directory */
 #define TIFFTAG_GDAL_METADATA 42112            /* Used by the GDAL library */
 #define TIFFTAG_GDAL_NODATA 42113              /* Used by the GDAL library */
 #define TIFFTAG_OCE_SCANJOB_DESCRIPTION 50215  /* Used in the Oce scanning process */
 #define TIFFTAG_OCE_APPLICATION_SELECTOR 50216 /* Used in the Oce scanning process. */
 #define TIFFTAG_OCE_IDENTIFICATION_NUMBER 50217
 #define TIFFTAG_OCE_IMAGELOGIC_CHARACTERISTICS 50218
 /* tags 50674 to 50677 are reserved for ESRI */
 #define TIFFTAG_LERC_PARAMETERS 50674 /* Stores LERC version and additional compression method */
 
 /* Adobe Digital Negative (DNG) format tags */
 #define TIFFTAG_DNGVERSION 50706           /* &DNG version number */
 #define TIFFTAG_DNGBACKWARDVERSION 50707   /* &DNG compatibility version */
 #define TIFFTAG_UNIQUECAMERAMODEL 50708    /* &name for the camera model */
 #define TIFFTAG_LOCALIZEDCAMERAMODEL 50709 /* &localized camera model name (UTF-8) */
 #define TIFFTAG_CFAPLANECOLOR 50710        /* &CFAPattern->LinearRaw space mapping */
 #define TIFFTAG_CFALAYOUT 50711            /* &spatial layout of the CFA */
 #define TIFFTAG_LINEARIZATIONTABLE 50712   /* &lookup table description */
 #define TIFFTAG_BLACKLEVELREPEATDIM 50713  /* &repeat pattern size for the BlackLevel tag */
 #define TIFFTAG_BLACKLEVEL 50714           /* &zero light encoding level */
 #define TIFFTAG_BLACKLEVELDELTAH 50715     /* &zero light encoding level differences (columns) */
 #define TIFFTAG_BLACKLEVELDELTAV 50716     /* &zero light encoding level differences (rows) */
 #define TIFFTAG_WHITELEVEL 50717           /* &fully saturated encoding level */
 #define TIFFTAG_DEFAULTSCALE 50718         /* &default scale factors */
 #define TIFFTAG_DEFAULTCROPORIGIN 50719    /* &origin of the final image area */
 #define TIFFTAG_DEFAULTCROPSIZE 50720      /* &size of the final image area */
 #define TIFFTAG_COLORMATRIX1 50721         /* &XYZ->reference color space transformation matrix 1 */
 #define TIFFTAG_COLORMATRIX2 50722         /* &XYZ->reference color space transformation matrix 2 */
 #define TIFFTAG_CAMERACALIBRATION1 50723   /* &calibration matrix 1 */
 #define TIFFTAG_CAMERACALIBRATION2 50724   /* &calibration matrix 2 */
 #define TIFFTAG_REDUCTIONMATRIX1 50725     /* &dimensionality reduction matrix 1 */
 #define TIFFTAG_REDUCTIONMATRIX2 50726     /* &dimensionality reduction matrix 2 */
 #define TIFFTAG_ANALOGBALANCE 50727        /* &gain applied the stored raw values*/
 #define TIFFTAG_ASSHOTNEUTRAL 50728        /* &selected white balance in linear reference space */
 #define TIFFTAG_ASSHOTWHITEXY 50729        /* &selected white balance in x-y chromaticity coordinates */
 #define TIFFTAG_BASELINEEXPOSURE 50730     /* &how much to move the zero point */
 #define TIFFTAG_BASELINENOISE 50731        /* &relative noise level */
 #define TIFFTAG_BASELINESHARPNESS 50732    /* &relative amount of sharpening */
 /* TIFFTAG_BAYERGREENSPLIT: &how closely the values of the green pixels in the blue/green rows
  * track the values of the green pixels in the red/green rows */
 #define TIFFTAG_BAYERGREENSPLIT 50733
 #define TIFFTAG_LINEARRESPONSELIMIT 50734     /* &non-linear encoding range */
 #define TIFFTAG_CAMERASERIALNUMBER 50735      /* &camera's serial number */
 #define TIFFTAG_LENSINFO 50736                /* info about the lens */
 #define TIFFTAG_CHROMABLURRADIUS 50737        /* &chroma blur radius */
 #define TIFFTAG_ANTIALIASSTRENGTH 50738       /* &relative strength of the camera's anti-alias filter */
 #define TIFFTAG_SHADOWSCALE 50739             /* &used by Adobe Camera Raw */
 #define TIFFTAG_DNGPRIVATEDATA 50740          /* &manufacturer's private data */
 #define TIFFTAG_MAKERNOTESAFETY 50741         /* &whether the EXIF MakerNote tag is safe to preserve along with the rest of the EXIF data */
 #define TIFFTAG_CALIBRATIONILLUMINANT1 50778  /* &illuminant 1 */
 #define TIFFTAG_CALIBRATIONILLUMINANT2 50779  /* &illuminant 2 */
 #define TIFFTAG_BESTQUALITYSCALE 50780        /* &best quality multiplier */
 #define TIFFTAG_RAWDATAUNIQUEID 50781         /* &unique identifier for the raw image data */
 #define TIFFTAG_ORIGINALRAWFILENAME 50827     /* &file name of the original raw file (UTF-8) */
 #define TIFFTAG_ORIGINALRAWFILEDATA 50828     /* &contents of the original raw file */
 #define TIFFTAG_ACTIVEAREA 50829              /* &active (non-masked) pixels of the sensor */
 #define TIFFTAG_MASKEDAREAS 50830             /* &list of coordinates of fully masked pixels */
 #define TIFFTAG_ASSHOTICCPROFILE 50831        /* &these two tags used to */
 #define TIFFTAG_ASSHOTPREPROFILEMATRIX 50832  /* map cameras's color space  into ICC profile space */
 #define TIFFTAG_CURRENTICCPROFILE 50833       /* & */
 #define TIFFTAG_CURRENTPREPROFILEMATRIX 50834 /* & */
 
 /* DNG 1.2.0.0 */
 #define TIFFTAG_COLORIMETRICREFERENCE 50879       /* &colorimetric reference */
 #define TIFFTAG_CAMERACALIBRATIONSIGNATURE 50931  /* &camera calibration signature (UTF-8) */
 #define TIFFTAG_PROFILECALIBRATIONSIGNATURE 50932 /* &profile calibration signature (UTF-8) */
 /* TIFFTAG_EXTRACAMERAPROFILES 50933 &extra camera profiles : is already defined for GeoTIFF DGIWG */
 #define TIFFTAG_ASSHOTPROFILENAME 50934           /* &as shot profile name (UTF-8) */
 #define TIFFTAG_NOISEREDUCTIONAPPLIED 50935       /* &amount of applied noise reduction */
 #define TIFFTAG_PROFILENAME 50936                 /* &camera profile name (UTF-8) */
 #define TIFFTAG_PROFILEHUESATMAPDIMS 50937        /* &dimensions of HSV mapping */
 #define TIFFTAG_PROFILEHUESATMAPDATA1 50938       /* &first HSV mapping table */
 #define TIFFTAG_PROFILEHUESATMAPDATA2 50939       /* &second HSV mapping table */
 #define TIFFTAG_PROFILETONECURVE 50940            /* &default tone curve */
 #define TIFFTAG_PROFILEEMBEDPOLICY 50941          /* &profile embedding policy */
 #define TIFFTAG_PROFILECOPYRIGHT 50942            /* &profile copyright information (UTF-8) */
 #define TIFFTAG_FORWARDMATRIX1 50964              /* &matrix for mapping white balanced camera colors to XYZ D50 */
 #define TIFFTAG_FORWARDMATRIX2 50965              /* &matrix for mapping white balanced camera colors to XYZ D50 */
 #define TIFFTAG_PREVIEWAPPLICATIONNAME 50966      /* &name of application that created preview (UTF-8) */
 #define TIFFTAG_PREVIEWAPPLICATIONVERSION 50967   /* &version of application that created preview (UTF-8) */
 #define TIFFTAG_PREVIEWSETTINGSNAME 50968         /* &name of conversion settings (UTF-8) */
 #define TIFFTAG_PREVIEWSETTINGSDIGEST 50969       /* &unique id of conversion settings */
 #define TIFFTAG_PREVIEWCOLORSPACE 50970           /* &preview color space */
 #define TIFFTAG_PREVIEWDATETIME 50971             /* &date/time preview was rendered */
 #define TIFFTAG_RAWIMAGEDIGEST 50972              /* &md5 of raw image data */
 #define TIFFTAG_ORIGINALRAWFILEDIGEST 50973       /* &md5 of the data stored in the OriginalRawFileData tag */
 #define TIFFTAG_SUBTILEBLOCKSIZE 50974            /* &subtile block size */
 #define TIFFTAG_ROWINTERLEAVEFACTOR 50975         /* &number of interleaved fields */
 #define TIFFTAG_PROFILELOOKTABLEDIMS 50981        /* &num of input samples in each dim of default "look" table */
 #define TIFFTAG_PROFILELOOKTABLEDATA 50982        /* &default "look" table for use as starting point */
 
 /* DNG 1.3.0.0 */
 #define TIFFTAG_OPCODELIST1 51008  /* &opcodes that should be applied to raw image after reading */
 #define TIFFTAG_OPCODELIST2 51009  /* &opcodes that should be applied after mapping to linear reference */
 #define TIFFTAG_OPCODELIST3 51022  /* &opcodes that should be applied after demosaicing */
 #define TIFFTAG_NOISEPROFILE 51041 /* &noise profile */
 
 /* DNG 1.4.0.0 */
 #define TIFFTAG_DEFAULTUSERCROP 51125              /* &default user crop rectangle in relative coords */
 #define TIFFTAG_DEFAULTBLACKRENDER 51110           /* &black rendering hint */
 #define TIFFTAG_BASELINEEXPOSUREOFFSET 51109       /* &baseline exposure offset */
 #define TIFFTAG_PROFILELOOKTABLEENCODING 51108     /* &3D LookTable indexing conversion */
 #define TIFFTAG_PROFILEHUESATMAPENCODING 51107     /* &3D HueSatMap indexing conversion */
 #define TIFFTAG_ORIGINALDEFAULTFINALSIZE 51089     /* &default final size of larger original file for this proxy */
 #define TIFFTAG_ORIGINALBESTQUALITYFINALSIZE 51090 /* &best quality final size of larger original file for this proxy */
 #define TIFFTAG_ORIGINALDEFAULTCROPSIZE 51091      /* &the default crop size of larger original file for this proxy */
 #define TIFFTAG_NEWRAWIMAGEDIGEST 51111            /* &modified MD5 digest of the raw image data */
 #define TIFFTAG_RAWTOPREVIEWGAIN 51112             /* &The gain between the main raw FD and the preview IFD containing this tag */
 
 /* DNG 1.5.0.0 */
 #define TIFFTAG_DEPTHFORMAT 51177      /* &encoding of the depth data in the file */
 #define TIFFTAG_DEPTHNEAR 51178        /* &distance from the camera represented by value 0 in the depth map */
 #define TIFFTAG_DEPTHFAR 51179         /* &distance from the camera represented by the maximum value in the depth map */
 #define TIFFTAG_DEPTHUNITS 51180       /* &measurement units for DepthNear and DepthFar */
 #define TIFFTAG_DEPTHMEASURETYPE 51181 /* &measurement geometry for the depth map */
 #define TIFFTAG_ENHANCEPARAMS 51182    /* &a string that documents how the enhanced image data was processed. */
 
 /* DNG 1.6.0.0 */
 #define TIFFTAG_PROFILEGAINTABLEMAP 52525    /* &spatially varying gain tables that can be applied as starting point */
 #define TIFFTAG_SEMANTICNAME 52526           /* &a string that identifies the semantic mask */
 #define TIFFTAG_SEMANTICINSTANCEID 52528     /* &a string that identifies a specific instance in a semantic mask */
 #define TIFFTAG_MASKSUBAREA 52536            /* &the crop rectangle of this IFD's mask, relative to the main image */
 #define TIFFTAG_RGBTABLES 52543              /* &color transforms to apply to masked image regions */
 #define TIFFTAG_CALIBRATIONILLUMINANT3 52529 /* &the illuminant used for the third set of color calibration tags */
 #define TIFFTAG_COLORMATRIX3 52531           /* &matrix to convert XYZ values to reference camera native color space under CalibrationIlluminant3 */
 #define TIFFTAG_CAMERACALIBRATION3 52530     /* &matrix to transform reference camera native space values to individual camera native space values under CalibrationIlluminant3 */
 #define TIFFTAG_REDUCTIONMATRIX3 52538       /* &dimensionality reduction matrix for use in color conversion to XYZ under CalibrationIlluminant3 */
 #define TIFFTAG_PROFILEHUESATMAPDATA3 52537  /* &the data for the third HSV table */
 #define TIFFTAG_FORWARDMATRIX3 52532         /* &matrix to map white balanced camera colors to XYZ D50 */
 #define TIFFTAG_ILLUMINANTDATA1 52533        /* &data for the first calibration illuminant */
 #define TIFFTAG_ILLUMINANTDATA2 52534        /* &data for the second calibration illuminant */
 #define TIFFTAG_ILLUMINANTDATA3 53535        /* &data for the third calibration illuminant */
 
 /* TIFF/EP */
 #define TIFFTAG_EP_CFAREPEATPATTERNDIM 33421      /* dimensions of CFA pattern */
 #define TIFFTAG_EP_CFAPATTERN 33422               /* color filter array pattern */
 #define TIFFTAG_EP_BATTERYLEVEL 33423             /* battery level (rational or ASCII) */
 #define TIFFTAG_EP_INTERLACE 34857                /* Number of multi-field images */
 /* TIFFTAG_EP_IPTC_NAA and TIFFTAG_RICHTIFFIPTC share the same tag number (33723)
  *   LibTIFF type is UNDEFINED or BYTE, but often times incorrectly specified as LONG,
  *   because TIFF/EP (ISO/DIS 12234-2) specifies type LONG or ASCII. */
 #define TIFFTAG_EP_IPTC_NAA 33723                 /* Alias IPTC/NAA Newspaper Association RichTIFF */
 #define TIFFTAG_EP_TIMEZONEOFFSET 34858           /* Time zone offset relative to UTC */
 #define TIFFTAG_EP_SELFTIMERMODE 34859            /* Number of seconds capture was delayed from button press */
 #define TIFFTAG_EP_FLASHENERGY 37387              /* Flash energy, or range if there is uncertainty */
 #define TIFFTAG_EP_SPATIALFREQUENCYRESPONSE 37388 /* Spatial frequency response */
 #define TIFFTAG_EP_NOISE 37389                    /* Camera noise measurement values */
 #define TIFFTAG_EP_FOCALPLANEXRESOLUTION 37390    /* Focal plane X resolution */
 #define TIFFTAG_EP_FOCALPLANEYRESOLUTION 37391    /* Focal plane Y resolution */
 #define TIFFTAG_EP_FOCALPLANERESOLUTIONUNIT 37392 /* Focal plane resolution unit */
 #define TIFFTAG_EP_IMAGENUMBER 37393              /* Number of image when several of burst shot stored in same TIFF/EP */
 #define TIFFTAG_EP_SECURITYCLASSIFICATION 37394   /* Security classification */
 #define TIFFTAG_EP_IMAGEHISTORY 37395             /* Record of what has been done to the image */
 #define TIFFTAG_EP_EXPOSUREINDEX 37397            /* Exposure index */
 #define TIFFTAG_EP_STANDARDID 37398               /* TIFF/EP standard version, n.n.n.n */
 #define TIFFTAG_EP_SENSINGMETHOD 37399            /* Type of image sensor */
 /* 
  * TIFF/EP tags equivalent to EXIF tags
  *     Note that TIFF-EP and EXIF use nearly the same metadata tag set, but TIFF-EP stores the tags in IFD 0,
  *     while EXIF store the tags in a separate IFD. Either location is allowed by DNG, but the EXIF location is preferred.
  */
 #define TIFFTAG_EP_EXPOSURETIME 33434             /* Exposure time */
 #define TIFFTAG_EP_FNUMBER 33437                  /* F number */
 #define TIFFTAG_EP_EXPOSUREPROGRAM 34850          /* Exposure program */
 #define TIFFTAG_EP_SPECTRALSENSITIVITY 34852      /* Spectral sensitivity */
 #define TIFFTAG_EP_ISOSPEEDRATINGS 34855          /* ISO speed rating */
 #define TIFFTAG_EP_OECF 34856                     /* Optoelectric conversion factor */
 #define TIFFTAG_EP_DATETIMEORIGINAL 36867         /* Date and time of original data generation */
 #define TIFFTAG_EP_COMPRESSEDBITSPERPIXEL 37122   /* Image compression mode */
 #define TIFFTAG_EP_SHUTTERSPEEDVALUE 37377        /* Shutter speed */
 #define TIFFTAG_EP_APERTUREVALUE 37378            /* Aperture */
 #define TIFFTAG_EP_BRIGHTNESSVALUE 37379          /* Brightness */
 #define TIFFTAG_EP_EXPOSUREBIASVALUE 37380        /* Exposure bias */
 #define TIFFTAG_EP_MAXAPERTUREVALUE 37381         /* Maximum lens aperture */
 #define TIFFTAG_EP_SUBJECTDISTANCE 37382          /* Subject distance */
 #define TIFFTAG_EP_METERINGMODE 37383             /* Metering mode */
 #define TIFFTAG_EP_LIGHTSOURCE 37384              /* Light source */
 #define TIFFTAG_EP_FLASH 37385                    /* Flash */
 #define TIFFTAG_EP_FOCALLENGTH 37386              /* Lens focal length */
 #define TIFFTAG_EP_SUBJECTLOCATION 37396          /* Subject location (area) */
 
 #define TIFFTAG_RPCCOEFFICIENT 50844       /* Define by GDAL for geospatial georeferencing through RPC: http://geotiff.maptools.org/rpc_prop.html */
 #define TIFFTAG_ALIAS_LAYER_METADATA 50784 /* Alias Sketchbook Pro layer usage description. */
 
 /* GeoTIFF DGIWG */
 #define TIFFTAG_TIFF_RSID 50908           /* https://www.awaresystems.be/imaging/tiff/tifftags/tiff_rsid.html */
 #define TIFFTAG_GEO_METADATA 50909        /* https://www.awaresystems.be/imaging/tiff/tifftags/geo_metadata.html */
 #define TIFFTAG_EXTRACAMERAPROFILES 50933 /* http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/dng_spec_1.4.0.0.pdf */
 
 /* tag 65535 is an undefined tag used by Eastman Kodak */
 #define TIFFTAG_DCSHUESHIFTVALUES 65535 /* hue shift correction data */
 
 /*
  * The following are ``pseudo tags'' that can be used to control
  * codec-specific functionality.  These tags are not written to file.
  * Note that these values start at 0xffff+1 so that they'll never
  * collide with Aldus-assigned tags.
  *
  * If you want your private pseudo tags ``registered'' (i.e. added to
  * this file), please post a bug report via the tracking system at
  * http://www.remotesensing.org/libtiff/bugs.html with the appropriate
  * C definitions to add.
  */
 #define TIFFTAG_FAXMODE 65536        /* Group 3/4 format control */
 #define FAXMODE_CLASSIC 0x0000       /* default, include RTC */
 #define FAXMODE_NORTC 0x0001         /* no RTC at end of data */
 #define FAXMODE_NOEOL 0x0002         /* no EOL code at end of row */
 #define FAXMODE_BYTEALIGN 0x0004     /* byte align row */
 #define FAXMODE_WORDALIGN 0x0008     /* word align row */
 #define FAXMODE_CLASSF FAXMODE_NORTC /* TIFF Class F */
 #define TIFFTAG_JPEGQUALITY 65537    /* Compression quality level */
 /* Note: quality level is on the IJG 0-100 scale.  Default value is 75 */
 #define TIFFTAG_JPEGCOLORMODE 65538  /* Auto RGB<=>YCbCr convert? */
 #define JPEGCOLORMODE_RAW 0x0000     /* no conversion (default) */
 #define JPEGCOLORMODE_RGB 0x0001     /* do auto conversion */
 #define TIFFTAG_JPEGTABLESMODE 65539 /* What to put in JPEGTables */
 #define JPEGTABLESMODE_QUANT 0x0001  /* include quantization tbls */
 #define JPEGTABLESMODE_HUFF 0x0002   /* include Huffman tbls */
 /* Note: default is JPEGTABLESMODE_QUANT | JPEGTABLESMODE_HUFF */
 #define TIFFTAG_FAXFILLFUNC 65540     /* G3/G4 fill function */
 #define TIFFTAG_PIXARLOGDATAFMT 65549 /* PixarLogCodec I/O data sz */
 #define PIXARLOGDATAFMT_8BIT 0        /* regular u_char samples */
 #define PIXARLOGDATAFMT_8BITABGR 1    /* ABGR-order u_chars */
 #define PIXARLOGDATAFMT_11BITLOG 2    /* 11-bit log-encoded (raw) */
 #define PIXARLOGDATAFMT_12BITPICIO 3  /* as per PICIO (1.0==2048) */
 #define PIXARLOGDATAFMT_16BIT 4       /* signed short samples */
 #define PIXARLOGDATAFMT_FLOAT 5       /* IEEE float samples */
 /* 65550-65556 are allocated to Oceana Matrix <dev@oceana.com> */
 #define TIFFTAG_DCSIMAGERTYPE 65550     /* imager model & filter */
 #define DCSIMAGERMODEL_M3 0             /* M3 chip (1280 x 1024) */
 #define DCSIMAGERMODEL_M5 1             /* M5 chip (1536 x 1024) */
 #define DCSIMAGERMODEL_M6 2             /* M6 chip (3072 x 2048) */
 #define DCSIMAGERFILTER_IR 0            /* infrared filter */
 #define DCSIMAGERFILTER_MONO 1          /* monochrome filter */
 #define DCSIMAGERFILTER_CFA 2           /* color filter array */
 #define DCSIMAGERFILTER_OTHER 3         /* other filter */
 #define TIFFTAG_DCSINTERPMODE 65551     /* interpolation mode */
 #define DCSINTERPMODE_NORMAL 0x0        /* whole image, default */
 #define DCSINTERPMODE_PREVIEW 0x1       /* preview of image (384x256) */
 #define TIFFTAG_DCSBALANCEARRAY 65552   /* color balance values */
 #define TIFFTAG_DCSCORRECTMATRIX 65553  /* color correction values */
 #define TIFFTAG_DCSGAMMA 65554          /* gamma value */
 #define TIFFTAG_DCSTOESHOULDERPTS 65555 /* toe & shoulder points */
 #define TIFFTAG_DCSCALIBRATIONFD 65556  /* calibration file desc */
 /* Note: quality level is on the ZLIB 1-9 scale. Default value is -1 */
 #define TIFFTAG_ZIPQUALITY 65557      /* compression quality level */
 #define TIFFTAG_PIXARLOGQUALITY 65558 /* PixarLog uses same scale */
 /* 65559 is allocated to Oceana Matrix <dev@oceana.com> */
 #define TIFFTAG_DCSCLIPRECTANGLE 65559 /* area of image to acquire */
 #define TIFFTAG_SGILOGDATAFMT 65560    /* SGILog user data format */
 #define SGILOGDATAFMT_FLOAT 0          /* IEEE float samples */
 #define SGILOGDATAFMT_16BIT 1          /* 16-bit samples */
 #define SGILOGDATAFMT_RAW 2            /* uninterpreted data */
 #define SGILOGDATAFMT_8BIT 3           /* 8-bit RGB monitor values */
 #define TIFFTAG_SGILOGENCODE 65561     /* SGILog data encoding control*/
 #define SGILOGENCODE_NODITHER 0        /* do not dither encoded values*/
 #define SGILOGENCODE_RANDITHER 1       /* randomly dither encd values */
 #define TIFFTAG_LZMAPRESET 65562       /* LZMA2 preset (compression level) */
 #define TIFFTAG_PERSAMPLE 65563        /* interface for per sample tags */
 #define PERSAMPLE_MERGED 0             /* present as a single value */
 #define PERSAMPLE_MULTI 1              /* present as multiple values */
 #define TIFFTAG_ZSTD_LEVEL 65564       /* ZSTD compression level */
 #define TIFFTAG_LERC_VERSION 65565     /* LERC version */
 #define LERC_VERSION_2_4 4
 #define TIFFTAG_LERC_ADD_COMPRESSION 65566 /* LERC additional compression */
 #define LERC_ADD_COMPRESSION_NONE 0
 #define LERC_ADD_COMPRESSION_DEFLATE 1
 #define LERC_ADD_COMPRESSION_ZSTD 2
 #define TIFFTAG_LERC_MAXZERROR 65567   /* LERC maximum error */
 #define TIFFTAG_WEBP_LEVEL 65568       /* WebP compression level */
 #define TIFFTAG_WEBP_LOSSLESS 65569    /* WebP lossless/lossy */
 #define TIFFTAG_DEFLATE_SUBCODEC 65570 /* ZIP codec: to get/set the sub-codec to use. Will default to libdeflate when available */
 #define DEFLATE_SUBCODEC_ZLIB 0
 #define DEFLATE_SUBCODEC_LIBDEFLATE 1
 
 /*
  * EXIF tags
  */
 #define EXIFTAG_EXPOSURETIME 33434             /* Exposure time */
 #define EXIFTAG_FNUMBER 33437                  /* F number */
 #define EXIFTAG_EXPOSUREPROGRAM 34850          /* Exposure program */
 #define EXIFTAG_SPECTRALSENSITIVITY 34852      /* Spectral sensitivity */
 /* After EXIF 2.2.1 ISOSpeedRatings is named PhotographicSensitivity.
    In addition, while "Count=Any", only 1 count should be used. */
 #define EXIFTAG_ISOSPEEDRATINGS 34855          /* ISO speed rating */
 #define EXIFTAG_PHOTOGRAPHICSENSITIVITY 34855  /* Photographic Sensitivity (new name for tag 34855) */
 #define EXIFTAG_OECF 34856                     /* Optoelectric conversion factor */
 #define EXIFTAG_EXIFVERSION 36864              /* Exif version */
 #define EXIFTAG_DATETIMEORIGINAL 36867         /* Date and time of original data generation */
 #define EXIFTAG_DATETIMEDIGITIZED 36868        /* Date and time of digital data generation */
 #define EXIFTAG_COMPONENTSCONFIGURATION 37121  /* Meaning of each component */
 #define EXIFTAG_COMPRESSEDBITSPERPIXEL 37122   /* Image compression mode */
 #define EXIFTAG_SHUTTERSPEEDVALUE 37377        /* Shutter speed */
 #define EXIFTAG_APERTUREVALUE 37378            /* Aperture */
 #define EXIFTAG_BRIGHTNESSVALUE 37379          /* Brightness */
 #define EXIFTAG_EXPOSUREBIASVALUE 37380        /* Exposure bias */
 #define EXIFTAG_MAXAPERTUREVALUE 37381         /* Maximum lens aperture */
 #define EXIFTAG_SUBJECTDISTANCE 37382          /* Subject distance */
 #define EXIFTAG_METERINGMODE 37383             /* Metering mode */
 #define EXIFTAG_LIGHTSOURCE 37384              /* Light source */
 #define EXIFTAG_FLASH 37385                    /* Flash */
 #define EXIFTAG_FOCALLENGTH 37386              /* Lens focal length */
 #define EXIFTAG_SUBJECTAREA 37396              /* Subject area */
 #define EXIFTAG_MAKERNOTE 37500                /* Manufacturer notes */
 #define EXIFTAG_USERCOMMENT 37510              /* User comments */
 #define EXIFTAG_SUBSECTIME 37520               /* DateTime subseconds */
 #define EXIFTAG_SUBSECTIMEORIGINAL 37521       /* DateTimeOriginal subseconds */
 #define EXIFTAG_SUBSECTIMEDIGITIZED 37522      /* DateTimeDigitized subseconds */
 #define EXIFTAG_FLASHPIXVERSION 40960          /* Supported Flashpix version */
 #define EXIFTAG_COLORSPACE 40961               /* Color space information */
 #define EXIFTAG_PIXELXDIMENSION 40962          /* Valid image width */
 #define EXIFTAG_PIXELYDIMENSION 40963          /* Valid image height */
 #define EXIFTAG_RELATEDSOUNDFILE 40964         /* Related audio file */
 #define EXIFTAG_FLASHENERGY 41483              /* Flash energy */
 #define EXIFTAG_SPATIALFREQUENCYRESPONSE 41484 /* Spatial frequency response */
 #define EXIFTAG_FOCALPLANEXRESOLUTION 41486    /* Focal plane X resolution */
 #define EXIFTAG_FOCALPLANEYRESOLUTION 41487    /* Focal plane Y resolution */
 #define EXIFTAG_FOCALPLANERESOLUTIONUNIT 41488 /* Focal plane resolution unit */
 #define EXIFTAG_SUBJECTLOCATION 41492          /* Subject location */
 #define EXIFTAG_EXPOSUREINDEX 41493            /* Exposure index */
 #define EXIFTAG_SENSINGMETHOD 41495            /* Sensing method */
 #define EXIFTAG_FILESOURCE 41728               /* File source */
 #define EXIFTAG_SCENETYPE 41729                /* Scene type */
 #define EXIFTAG_CFAPATTERN 41730               /* CFA pattern */
 #define EXIFTAG_CUSTOMRENDERED 41985           /* Custom image processing */
 #define EXIFTAG_EXPOSUREMODE 41986             /* Exposure mode */
 #define EXIFTAG_WHITEBALANCE 41987             /* White balance */
 #define EXIFTAG_DIGITALZOOMRATIO 41988         /* Digital zoom ratio */
 #define EXIFTAG_FOCALLENGTHIN35MMFILM 41989    /* Focal length in 35 mm film */
 #define EXIFTAG_SCENECAPTURETYPE 41990         /* Scene capture type */
 #define EXIFTAG_GAINCONTROL 41991              /* Gain control */
 #define EXIFTAG_CONTRAST 41992                 /* Contrast */
 #define EXIFTAG_SATURATION 41993               /* Saturation */
 #define EXIFTAG_SHARPNESS 41994                /* Sharpness */
 #define EXIFTAG_DEVICESETTINGDESCRIPTION 41995 /* Device settings description */
 #define EXIFTAG_SUBJECTDISTANCERANGE 41996     /* Subject distance range */
 #define EXIFTAG_IMAGEUNIQUEID 42016            /* Unique image ID */
 
 /*--: New for EXIF-Version 2.32, May 2019 ... */
 #define EXIFTAG_SENSITIVITYTYPE 34864           /* The SensitivityType tag indicates which one of the parameters of ISO12232 is the PhotographicSensitivity tag. */
 #define EXIFTAG_STANDARDOUTPUTSENSITIVITY 34865 /* This tag indicates the standard output sensitivity value of a camera or input device defined in ISO 12232. */
 #define EXIFTAG_RECOMMENDEDEXPOSUREINDEX 34866  /* recommended exposure index   */
 #define EXIFTAG_ISOSPEED 34867                  /* ISO speed value */
 #define EXIFTAG_ISOSPEEDLATITUDEYYY 34868       /* ISO speed latitude yyy */
 #define EXIFTAG_ISOSPEEDLATITUDEZZZ 34869       /* ISO speed latitude zzz */
 #define EXIFTAG_OFFSETTIME 36880                /* offset from UTC of the time of DateTime tag. */
 #define EXIFTAG_OFFSETTIMEORIGINAL 36881        /* offset from UTC of the time of DateTimeOriginal tag. */
 #define EXIFTAG_OFFSETTIMEDIGITIZED 36882       /* offset from UTC of the time of DateTimeDigitized tag. */
 #define EXIFTAG_TEMPERATURE 37888               /* Temperature as the ambient situation at the shot in dergee Celsius */
 #define EXIFTAG_HUMIDITY 37889                  /* Humidity as the ambient situation at the shot in percent */
 #define EXIFTAG_PRESSURE 37890                  /* Pressure as the ambient situation at the shot hecto-Pascal (hPa) */
 #define EXIFTAG_WATERDEPTH 37891                /* WaterDepth as the ambient situation at the shot in meter (m) */
 #define EXIFTAG_ACCELERATION 37892              /* Acceleration (a scalar regardless of direction) as the ambientsituation at the shot in units of mGal (10-5 m/s^2) */
 /* EXIFTAG_CAMERAELEVATIONANGLE: Elevation/depression. angle of the orientation of the  camera(imaging optical axis)
  *                               as the ambient situation at the shot in degree from -180deg to +180deg. */
 #define EXIFTAG_CAMERAELEVATIONANGLE 37893
 #define EXIFTAG_CAMERAOWNERNAME 42032  /* owner of a camera */
 #define EXIFTAG_BODYSERIALNUMBER 42033 /* serial number of the body of the camera */
 /* EXIFTAG_LENSSPECIFICATION: minimum focal length (in mm), maximum focal length (in mm),minimum F number in the minimum focal length,
  *                            and minimum F number in the maximum focal length, */
 #define EXIFTAG_LENSSPECIFICATION 42034
 #define EXIFTAG_LENSMAKE 42035                            /* the lens manufacturer */
 #define EXIFTAG_LENSMODEL 42036                           /* the lens model name and model number */
 #define EXIFTAG_LENSSERIALNUMBER 42037                    /* the serial number of the interchangeable lens */
 #define EXIFTAG_GAMMA 42240                               /* value of coefficient gamma */
 #define EXIFTAG_COMPOSITEIMAGE 42080                      /* composite image */
 #define EXIFTAG_SOURCEIMAGENUMBEROFCOMPOSITEIMAGE 42081   /* source image number of composite image */
 #define EXIFTAG_SOURCEEXPOSURETIMESOFCOMPOSITEIMAGE 42082 /* source exposure times of composite image */
 
 /*
  * EXIF-GPS tags  (Version 2.31, July 2016)
  */
 #define GPSTAG_VERSIONID 0             /* Indicates the version of GPSInfoIFD. */
 #define GPSTAG_LATITUDEREF 1           /* Indicates whether the latitude is north or south latitude. */
 #define GPSTAG_LATITUDE 2              /* Indicates the latitude. */
 #define GPSTAG_LONGITUDEREF 3          /* Indicates whether the longitude is east or west longitude. */
 #define GPSTAG_LONGITUDE 4             /* Indicates the longitude. */
 #define GPSTAG_ALTITUDEREF 5           /* Indicates the altitude used as the reference altitude. */
 #define GPSTAG_ALTITUDE 6              /* Indicates the altitude based on the reference in GPSAltitudeRef. */
 #define GPSTAG_TIMESTAMP 7             /*Indicates the time as UTC (Coordinated Universal Time). */
 #define GPSTAG_SATELLITES 8            /*Indicates the GPS satellites used for measurements. */
 #define GPSTAG_STATUS 9                /* Indicates the status of the GPS receiver when the image is  recorded. */
 #define GPSTAG_MEASUREMODE 10          /* Indicates the GPS measurement mode. */
 #define GPSTAG_DOP 11                  /* Indicates the GPS DOP (data degree of precision). */
 #define GPSTAG_SPEEDREF 12             /* Indicates the unit used to express the GPS receiver speed of movement. */
 #define GPSTAG_SPEED 13                /* Indicates the speed of GPS receiver movement. */
 #define GPSTAG_TRACKREF 14             /* Indicates the reference for giving the direction of GPS receiver movement. */
 #define GPSTAG_TRACK 15                /* Indicates the direction of GPS receiver movement. */
 #define GPSTAG_IMGDIRECTIONREF 16      /* Indicates the reference for giving the direction of the image when it is captured. */
 #define GPSTAG_IMGDIRECTION 17         /* Indicates the direction of the image when it was captured. */
 #define GPSTAG_MAPDATUM 18             /* Indicates the geodetic survey data used by the GPS receiver. (e.g. WGS-84) */
 #define GPSTAG_DESTLATITUDEREF 19      /* Indicates whether the latitude of the destination point is north or south latitude. */
 #define GPSTAG_DESTLATITUDE 20         /* Indicates the latitude of the destination point. */
 #define GPSTAG_DESTLONGITUDEREF 21     /* Indicates whether the longitude of the destination point is east or west longitude. */
 #define GPSTAG_DESTLONGITUDE 22        /* Indicates the longitude of the destination point. */
 #define GPSTAG_DESTBEARINGREF 23       /* Indicates the reference used for giving the bearing to the destination point. */
 #define GPSTAG_DESTBEARING 24          /* Indicates the bearing to the destination point. */
 #define GPSTAG_DESTDISTANCEREF 25      /* Indicates the unit used to express the distance to the destination point. */
 #define GPSTAG_DESTDISTANCE 26         /* Indicates the distance to the destination point. */
 #define GPSTAG_PROCESSINGMETHOD 27     /* A character string recording the name of the method used for location finding. */
 #define GPSTAG_AREAINFORMATION 28      /* A character string recording the name of the GPS area. */
 #define GPSTAG_DATESTAMP 29            /* A character string recording date and time information relative to UTC (Coordinated Universal Time). */
 #define GPSTAG_DIFFERENTIAL 30         /* Indicates whether differential correction is applied to the GPS receiver. */
 #define GPSTAG_GPSHPOSITIONINGERROR 31 /* Indicates horizontal positioning errors in meters. */
 
 #endif /* _TIFF_ */

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