/*

 * 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.

 */

/*

 * TIFF Library.

 *

 * Core Directory Tag Support.

 */

#include "tiffiop.h"

#include <stdlib.h>

/*

 * NOTE: THIS ARRAY IS ASSUMED TO BE SORTED BY TAG.

 *

 * NOTE: The second field (field_readcount) and third field (field_writecount)

 *       sometimes use the values TIFF_VARIABLE (-1), TIFF_VARIABLE2 (-3)

 *       and TIFF_SPP (-2). The macros should be used but would throw off

 *       the formatting of the code, so please interpret the -1, -2 and -3

 *       values accordingly.

 */

/* const object should be initialized */

#ifdef _MSC_VER

#pragma warning( push )

#pragma warning( disable : 4132 )

#endif

static const TIFFFieldArray tiffFieldArray;

static const TIFFFieldArray exifFieldArray;

static const TIFFFieldArray gpsFieldArray;

#ifdef _MSC_VER

#pragma warning( pop )

#endif

/*--: Rational2Double: --

 * The Rational2Double upgraded libtiff functionality allows the definition and achievement of true double-precision accuracy

 * for TIFF tags of RATIONAL type and field_bit=FIELD_CUSTOM using the set_field_type = TIFF_SETGET_DOUBLE.

 * Unfortunately, that changes the old implemented interface for TIFFGetField().

 * In order to keep the old TIFFGetField() interface behavior those tags have to be redefined with set_field_type = TIFF_SETGET_FLOAT!

 *

 *  Rational custom arrays are already defined as _Cxx_FLOAT, thus can stay.

 *

 */

static const TIFFField

tiffFields[] = {

  { TIFFTAG_SUBFILETYPE, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_SUBFILETYPE, 1, 0, "SubfileType", NULL },

  { TIFFTAG_OSUBFILETYPE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_SUBFILETYPE, 1, 0, "OldSubfileType", NULL },

  { TIFFTAG_IMAGEWIDTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_IMAGEDIMENSIONS, 0, 0, "ImageWidth", NULL },

  { TIFFTAG_IMAGELENGTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_IMAGEDIMENSIONS, 1, 0, "ImageLength", NULL },

  { TIFFTAG_BITSPERSAMPLE, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_BITSPERSAMPLE, 0, 0, "BitsPerSample", NULL },

  { TIFFTAG_COMPRESSION, -1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_COMPRESSION, 0, 0, "Compression", NULL },

  { TIFFTAG_PHOTOMETRIC, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_PHOTOMETRIC, 0, 0, "PhotometricInterpretation", NULL },

  { TIFFTAG_THRESHHOLDING, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_THRESHHOLDING, 1, 0, "Threshholding", NULL },

  { TIFFTAG_CELLWIDTH, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "CellWidth", NULL },

  { TIFFTAG_CELLLENGTH, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "CellLength", NULL },

  { TIFFTAG_FILLORDER, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_FILLORDER, 0, 0, "FillOrder", NULL },

  { TIFFTAG_DOCUMENTNAME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DocumentName", NULL },

  { TIFFTAG_IMAGEDESCRIPTION, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageDescription", NULL },

  { TIFFTAG_MAKE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Make", NULL },

  { TIFFTAG_MODEL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Model", NULL },

  { TIFFTAG_STRIPOFFSETS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPOFFSETS, 0, 0, "StripOffsets", NULL },

  { TIFFTAG_ORIENTATION, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_ORIENTATION, 0, 0, "Orientation", NULL },

  { TIFFTAG_SAMPLESPERPIXEL, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_SAMPLESPERPIXEL, 0, 0, "SamplesPerPixel", NULL },

  { TIFFTAG_ROWSPERSTRIP, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_ROWSPERSTRIP, 0, 0, "RowsPerStrip", NULL },

  { TIFFTAG_STRIPBYTECOUNTS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPBYTECOUNTS, 0, 0, "StripByteCounts", NULL },

  { TIFFTAG_MINSAMPLEVALUE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_MINSAMPLEVALUE, 1, 0, "MinSampleValue", NULL },

  { TIFFTAG_MAXSAMPLEVALUE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_MAXSAMPLEVALUE, 1, 0, "MaxSampleValue", NULL },

  { TIFFTAG_XRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "XResolution", NULL },

  { TIFFTAG_YRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "YResolution", NULL },

  { TIFFTAG_PLANARCONFIG, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_PLANARCONFIG, 0, 0, "PlanarConfiguration", NULL },

  { TIFFTAG_PAGENAME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PageName", NULL },

  { TIFFTAG_XPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "XPosition", NULL },

  { TIFFTAG_YPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "YPosition", NULL },

  { TIFFTAG_FREEOFFSETS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 0, 0, "FreeOffsets", NULL },

  { TIFFTAG_FREEBYTECOUNTS, -1, -1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 0, 0, "FreeByteCounts", NULL },

  { TIFFTAG_GRAYRESPONSEUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "GrayResponseUnit", NULL },

  { TIFFTAG_GRAYRESPONSECURVE, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "GrayResponseCurve", NULL },

  { TIFFTAG_RESOLUTIONUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTIONUNIT, 1, 0, "ResolutionUnit", NULL },

  { TIFFTAG_PAGENUMBER, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_PAGENUMBER, 1, 0, "PageNumber", NULL },

  { TIFFTAG_COLORRESPONSEUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_IGNORE, 1, 0, "ColorResponseUnit", NULL },

  { TIFFTAG_TRANSFERFUNCTION, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_OTHER, TIFF_SETGET_UNDEFINED, FIELD_TRANSFERFUNCTION, 1, 0, "TransferFunction", NULL },

  { TIFFTAG_SOFTWARE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Software", NULL },

  { TIFFTAG_DATETIME, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTime", NULL },

  { TIFFTAG_ARTIST, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Artist", NULL },

  { TIFFTAG_HOSTCOMPUTER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "HostComputer", NULL },

  { TIFFTAG_WHITEPOINT, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "WhitePoint", NULL },

  { TIFFTAG_PRIMARYCHROMATICITIES, 6, 6, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PrimaryChromaticities", NULL },

  { TIFFTAG_COLORMAP, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_OTHER, TIFF_SETGET_UNDEFINED, FIELD_COLORMAP, 1, 0, "ColorMap", NULL },

  { TIFFTAG_HALFTONEHINTS, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_HALFTONEHINTS, 1, 0, "HalftoneHints", NULL },

  { TIFFTAG_TILEWIDTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_TILEDIMENSIONS, 0, 0, "TileWidth", NULL },

  { TIFFTAG_TILELENGTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_TILEDIMENSIONS, 0, 0, "TileLength", NULL },

  { TIFFTAG_TILEOFFSETS, -1, 1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPOFFSETS, 0, 0, "TileOffsets", NULL },

  { TIFFTAG_TILEBYTECOUNTS, -1, 1, TIFF_LONG8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_STRIPBYTECOUNTS, 0, 0, "TileByteCounts", NULL },

  { TIFFTAG_SUBIFD, -1, -1, TIFF_IFD8, 0, TIFF_SETGET_C16_IFD8, TIFF_SETGET_UNDEFINED, FIELD_SUBIFD, 1, 1, "SubIFD", (TIFFFieldArray*) &tiffFieldArray },

  { TIFFTAG_INKSET, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "InkSet", NULL },

  { TIFFTAG_INKNAMES, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_C16_ASCII, TIFF_SETGET_UNDEFINED, FIELD_INKNAMES, 1, 1, "InkNames", NULL },

  { TIFFTAG_NUMBEROFINKS, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "NumberOfInks", NULL },

  { TIFFTAG_DOTRANGE, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DotRange", NULL },

  { TIFFTAG_TARGETPRINTER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "TargetPrinter", NULL },

  { TIFFTAG_EXTRASAMPLES, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_EXTRASAMPLES, 0, 1, "ExtraSamples", NULL },

  { TIFFTAG_SAMPLEFORMAT, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_SAMPLEFORMAT, 0, 0, "SampleFormat", NULL },

  { TIFFTAG_SMINSAMPLEVALUE, -2, -1, TIFF_ANY, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_SMINSAMPLEVALUE, 1, 0, "SMinSampleValue", NULL },

  { TIFFTAG_SMAXSAMPLEVALUE, -2, -1, TIFF_ANY, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_SMAXSAMPLEVALUE, 1, 0, "SMaxSampleValue", NULL },

  { TIFFTAG_CLIPPATH, -1, -3, TIFF_BYTE, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ClipPath", NULL },

  { TIFFTAG_XCLIPPATHUNITS, 1, 1, TIFF_SLONG, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "XClipPathUnits", NULL },

  { TIFFTAG_XCLIPPATHUNITS, 1, 1, TIFF_SBYTE, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "XClipPathUnits", NULL },

  { TIFFTAG_YCLIPPATHUNITS, 1, 1, TIFF_SLONG, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "YClipPathUnits", NULL },

  { TIFFTAG_YCBCRCOEFFICIENTS, 3, 3, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "YCbCrCoefficients", NULL },

  { TIFFTAG_YCBCRSUBSAMPLING, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_UINT16_PAIR, TIFF_SETGET_UNDEFINED, FIELD_YCBCRSUBSAMPLING, 0, 0, "YCbCrSubsampling", NULL },

  { TIFFTAG_YCBCRPOSITIONING, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_YCBCRPOSITIONING, 0, 0, "YCbCrPositioning", NULL },

  { TIFFTAG_REFERENCEBLACKWHITE, 6, 6, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_REFBLACKWHITE, 1, 0, "ReferenceBlackWhite", NULL },

  { TIFFTAG_XMLPACKET, -3, -3, TIFF_BYTE, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "XMLPacket", NULL },

  /* begin SGI tags */

  { TIFFTAG_MATTEING, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_EXTRASAMPLES, 0, 0, "Matteing", NULL },

  { TIFFTAG_DATATYPE, -2, -1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_SAMPLEFORMAT, 0, 0, "DataType", NULL },

  { TIFFTAG_IMAGEDEPTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_IMAGEDEPTH, 0, 0, "ImageDepth", NULL },

  { TIFFTAG_TILEDEPTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_TILEDEPTH, 0, 0, "TileDepth", NULL },

  /* end SGI tags */

  /* begin Pixar tags */

  { TIFFTAG_PIXAR_IMAGEFULLWIDTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageFullWidth", NULL },

  { TIFFTAG_PIXAR_IMAGEFULLLENGTH, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageFullLength", NULL },

  { TIFFTAG_PIXAR_TEXTUREFORMAT, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "TextureFormat", NULL },

  { TIFFTAG_PIXAR_WRAPMODES, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "TextureWrapModes", NULL },

  { TIFFTAG_PIXAR_FOVCOT, 1, 1, TIFF_FLOAT, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FieldOfViewCotangent", NULL },

  { TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN, 16, 16, TIFF_FLOAT, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MatrixWorldToScreen", NULL },

  { TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA, 16, 16, TIFF_FLOAT, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MatrixWorldToCamera", NULL },

  { TIFFTAG_CFAREPEATPATTERNDIM, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0,  0,  "CFARepeatPatternDim", NULL },

  { TIFFTAG_CFAPATTERN, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CFAPattern" , NULL},

  { TIFFTAG_COPYRIGHT, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Copyright", NULL },

  /* end Pixar tags */

  { TIFFTAG_RICHTIFFIPTC, -3, -3, TIFF_UNDEFINED, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "RichTIFFIPTC", NULL },

  { TIFFTAG_PHOTOSHOP, -3, -3, TIFF_BYTE, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "Photoshop", NULL },

  /*--: EXIFIFD and GPSIFD specified as TIFF_LONG by Aware-Systems and not TIFF_IFD8 as in original LibTiff.

   *    However, for IFD-like tags, libtiff uses the data type TIFF_IFD8 in tiffFields[]-tag definition combined with

   *    a special handling procedure in order to write either a 32-bit value and the TIFF_IFD type-id into ClassicTIFF files 

   *    or a 64-bit value and the TIFF_IFD8 type-id into BigTIFF files. */

  { TIFFTAG_EXIFIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "EXIFIFDOffset", (TIFFFieldArray*) &exifFieldArray },

  { TIFFTAG_ICCPROFILE, -3, -3, TIFF_UNDEFINED, 0, TIFF_SETGET_C32_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ICC Profile", NULL },

  { TIFFTAG_GPSIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "GPSIFDOffset", (TIFFFieldArray*) &gpsFieldArray },

  { TIFFTAG_FAXRECVPARAMS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_CUSTOM, TRUE, FALSE, "FaxRecvParams", NULL },

  { TIFFTAG_FAXSUBADDRESS, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_ASCII, FIELD_CUSTOM, TRUE, FALSE, "FaxSubAddress", NULL },

  { TIFFTAG_FAXRECVTIME, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UINT32, FIELD_CUSTOM, TRUE, FALSE, "FaxRecvTime", NULL },

  { TIFFTAG_FAXDCS, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_ASCII, FIELD_CUSTOM, TRUE, FALSE, "FaxDcs", NULL },

  { TIFFTAG_STONITS, 1, 1, TIFF_DOUBLE, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "StoNits", NULL },

  { TIFFTAG_INTEROPERABILITYIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "InteroperabilityIFDOffset", NULL },

  /* begin DNG tags */

  { TIFFTAG_DNGVERSION, 4, 4, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DNGVersion", NULL },

  { TIFFTAG_DNGBACKWARDVERSION, 4, 4, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DNGBackwardVersion", NULL },

  { TIFFTAG_UNIQUECAMERAMODEL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "UniqueCameraModel", NULL },

  { TIFFTAG_LOCALIZEDCAMERAMODEL, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "LocalizedCameraModel", NULL },

  { TIFFTAG_CFAPLANECOLOR, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CFAPlaneColor", NULL },

  { TIFFTAG_CFALAYOUT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CFALayout", NULL },

  { TIFFTAG_LINEARIZATIONTABLE, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "LinearizationTable", NULL },

  { TIFFTAG_BLACKLEVELREPEATDIM, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BlackLevelRepeatDim", NULL },

  { TIFFTAG_BLACKLEVEL, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "BlackLevel", NULL },

  { TIFFTAG_BLACKLEVELDELTAH, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "BlackLevelDeltaH", NULL },

  { TIFFTAG_BLACKLEVELDELTAV, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "BlackLevelDeltaV", NULL },

  { TIFFTAG_WHITELEVEL, -1, -1, TIFF_LONG, 0, TIFF_SETGET_C16_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "WhiteLevel", NULL },

  { TIFFTAG_DEFAULTSCALE, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultScale", NULL },

  { TIFFTAG_BESTQUALITYSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BestQualityScale", NULL },

  { TIFFTAG_DEFAULTCROPORIGIN, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultCropOrigin", NULL },

  { TIFFTAG_DEFAULTCROPSIZE, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "DefaultCropSize", NULL },

  { TIFFTAG_COLORMATRIX1, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ColorMatrix1", NULL },

  { TIFFTAG_COLORMATRIX2, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ColorMatrix2", NULL },

  { TIFFTAG_CAMERACALIBRATION1, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CameraCalibration1", NULL },

  { TIFFTAG_CAMERACALIBRATION2, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CameraCalibration2", NULL },

  { TIFFTAG_REDUCTIONMATRIX1, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ReductionMatrix1", NULL },

  { TIFFTAG_REDUCTIONMATRIX2, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ReductionMatrix2", NULL },

  { TIFFTAG_ANALOGBALANCE, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AnalogBalance", NULL },

  { TIFFTAG_ASSHOTNEUTRAL, -1, -1, TIFF_RATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AsShotNeutral", NULL },

  { TIFFTAG_ASSHOTWHITEXY, 2, 2, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AsShotWhiteXY", NULL },

  { TIFFTAG_BASELINEEXPOSURE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineExposure", NULL },

  { TIFFTAG_BASELINENOISE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineNoise", NULL },

  { TIFFTAG_BASELINESHARPNESS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineSharpness", NULL },

  { TIFFTAG_BAYERGREENSPLIT, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BayerGreenSplit", NULL },

  { TIFFTAG_LINEARRESPONSELIMIT, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "LinearResponseLimit", NULL },

  { TIFFTAG_CAMERASERIALNUMBER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CameraSerialNumber", NULL },

  { TIFFTAG_LENSINFO, 4, 4, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "LensInfo", NULL },

  { TIFFTAG_CHROMABLURRADIUS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ChromaBlurRadius", NULL },

  { TIFFTAG_ANTIALIASSTRENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AntiAliasStrength", NULL },

  { TIFFTAG_SHADOWSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ShadowScale", NULL },

  { TIFFTAG_DNGPRIVATEDATA, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "DNGPrivateData", NULL },

  { TIFFTAG_MAKERNOTESAFETY, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "MakerNoteSafety", NULL },

  { TIFFTAG_CALIBRATIONILLUMINANT1, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CalibrationIlluminant1", NULL },

  { TIFFTAG_CALIBRATIONILLUMINANT2, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CalibrationIlluminant2", NULL },

  { TIFFTAG_RAWDATAUNIQUEID, 16, 16, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "RawDataUniqueID", NULL },

  { TIFFTAG_ORIGINALRAWFILENAME, -1, -1, TIFF_BYTE, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "OriginalRawFileName", NULL },

  { TIFFTAG_ORIGINALRAWFILEDATA, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "OriginalRawFileData", NULL },

  { TIFFTAG_ACTIVEAREA, 4, 4, TIFF_LONG, 0, TIFF_SETGET_C0_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ActiveArea", NULL },

  { TIFFTAG_MASKEDAREAS, -1, -1, TIFF_LONG, 0, TIFF_SETGET_C16_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "MaskedAreas", NULL },

  { TIFFTAG_ASSHOTICCPROFILE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AsShotICCProfile", NULL },

  { TIFFTAG_ASSHOTPREPROFILEMATRIX, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "AsShotPreProfileMatrix", NULL },

  { TIFFTAG_CURRENTICCPROFILE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CurrentICCProfile", NULL },

  { TIFFTAG_CURRENTPREPROFILEMATRIX, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "CurrentPreProfileMatrix", NULL },

  { TIFFTAG_PERSAMPLE, 0, 0, TIFF_SHORT, 0, TIFF_SETGET_UNDEFINED, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "PerSample", NULL},

  /* end DNG tags */

  /* begin TIFF/FX tags */

        { TIFFTAG_INDEXED, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "Indexed", NULL },

        { TIFFTAG_GLOBALPARAMETERSIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "GlobalParametersIFD", NULL },

        { TIFFTAG_PROFILETYPE, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ProfileType", NULL },

        { TIFFTAG_FAXPROFILE, 1, 1, TIFF_BYTE, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "FaxProfile", NULL },

        { TIFFTAG_CODINGMETHODS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "CodingMethods", NULL },

        { TIFFTAG_VERSIONYEAR, 4, 4, TIFF_BYTE, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "VersionYear", NULL },

        { TIFFTAG_MODENUMBER, 1, 1, TIFF_BYTE, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ModeNumber", NULL },

        { TIFFTAG_DECODE, -1, -1, TIFF_SRATIONAL, 0, TIFF_SETGET_C16_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "Decode", NULL },

        { TIFFTAG_IMAGEBASECOLOR, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "ImageBaseColor", NULL },

        { TIFFTAG_T82OPTIONS, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "T82Options", NULL },

        { TIFFTAG_STRIPROWCOUNTS, -1, -1, TIFF_LONG, 0, TIFF_SETGET_C16_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 1, "StripRowCounts", NULL },

        { TIFFTAG_IMAGELAYER, 2, 2, TIFF_LONG, 0, TIFF_SETGET_C0_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ImageLayer", NULL },

  /* end TIFF/FX tags */

  /* begin pseudo tags */

};

/*

 * EXIF tags  (Version 2.31, July 2016 plus version 2.32 May 2019)

 */

static const TIFFField

exifFields[] = {

  { EXIFTAG_EXPOSURETIME, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureTime", NULL },

  { EXIFTAG_FNUMBER, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FNumber", NULL },

  { EXIFTAG_EXPOSUREPROGRAM, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureProgram", NULL },

  { EXIFTAG_SPECTRALSENSITIVITY, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SpectralSensitivity", NULL },

  { EXIFTAG_ISOSPEEDRATINGS, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "ISOSpeedRatings", NULL },

  { EXIFTAG_OECF, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "OptoelectricConversionFactor", NULL },

  { EXIFTAG_SENSITIVITYTYPE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SensitivityType", NULL },

  { EXIFTAG_STANDARDOUTPUTSENSITIVITY, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "StandardOutputSensitivity", NULL },

  { EXIFTAG_RECOMMENDEDEXPOSUREINDEX, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "RecommendedExposureIndex", NULL },

  { EXIFTAG_ISOSPEED, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ISOSpeed", NULL },

  { EXIFTAG_ISOSPEEDLATITUDEYYY, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ISOSpeedLatitudeyyy", NULL },

  { EXIFTAG_ISOSPEEDLATITUDEZZZ, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ISOSpeedLatitudezzz", NULL },

  { EXIFTAG_EXIFVERSION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExifVersion", NULL },

  { EXIFTAG_DATETIMEORIGINAL, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTimeOriginal", NULL },

  { EXIFTAG_DATETIMEDIGITIZED, 20, 20, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DateTimeDigitized", NULL },

  { EXIFTAG_OFFSETTIME, 7, 7, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "OffsetTime", NULL },

  { EXIFTAG_OFFSETTIMEORIGINAL, 7, 7, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "OffsetTimeOriginal", NULL },

  { EXIFTAG_OFFSETTIMEDIGITIZED, 7, 7, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "OffsetTimeDigitized", NULL },

  { EXIFTAG_COMPONENTSCONFIGURATION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ComponentsConfiguration", NULL },

  { EXIFTAG_COMPRESSEDBITSPERPIXEL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CompressedBitsPerPixel", NULL },

  { EXIFTAG_SHUTTERSPEEDVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ShutterSpeedValue", NULL },

  { EXIFTAG_APERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ApertureValue", NULL },

  { EXIFTAG_BRIGHTNESSVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "BrightnessValue", NULL },

  { EXIFTAG_EXPOSUREBIASVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureBiasValue", NULL },

  { EXIFTAG_MAXAPERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MaxApertureValue", NULL },

  /*--: EXIFTAG_SUBJECTDISTANCE: LibTiff returns value of "-1" if numerator equals 4294967295 (0xFFFFFFFF) to indicate infinite distance!

   * However, there are two other EXIF tags where numerator indicates a special value and six other cases where the denominator indicates special values,

   * which are not treated within LibTiff!! */

  { EXIFTAG_SUBJECTDISTANCE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectDistance", NULL },

  { EXIFTAG_METERINGMODE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MeteringMode", NULL },

  { EXIFTAG_LIGHTSOURCE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LightSource", NULL },

  { EXIFTAG_FLASH, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Flash", NULL },

  { EXIFTAG_FOCALLENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalLength", NULL },

  { EXIFTAG_SUBJECTAREA, -1, -1, TIFF_SHORT, 0, TIFF_SETGET_C16_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SubjectArea", NULL },

  { EXIFTAG_MAKERNOTE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "MakerNote", NULL },

  { EXIFTAG_USERCOMMENT, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "UserComment", NULL },

  { EXIFTAG_SUBSECTIME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTime", NULL },

  { EXIFTAG_SUBSECTIMEORIGINAL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTimeOriginal", NULL },

  { EXIFTAG_SUBSECTIMEDIGITIZED, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubSecTimeDigitized", NULL },

  { EXIFTAG_TEMPERATURE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Temperature", NULL },

  { EXIFTAG_HUMIDITY, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Humidity", NULL },

  { EXIFTAG_PRESSURE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Pressure", NULL },

  { EXIFTAG_WATERDEPTH, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "WaterDepth", NULL },

  { EXIFTAG_ACCELERATION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Acceleration", NULL },

  { EXIFTAG_CAMERAELEVATIONANGLE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CameraElevationAngle", NULL },

  { EXIFTAG_FLASHPIXVERSION, 4, 4, TIFF_UNDEFINED, 0, TIFF_SETGET_C0_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FlashpixVersion", NULL },

  { EXIFTAG_COLORSPACE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ColorSpace", NULL },

  { EXIFTAG_PIXELXDIMENSION, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PixelXDimension", NULL },

  { EXIFTAG_PIXELYDIMENSION, 1, 1, TIFF_LONG, 0, TIFF_SETGET_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "PixelYDimension", NULL },

  { EXIFTAG_RELATEDSOUNDFILE, 13, 13, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "RelatedSoundFile", NULL },

  { EXIFTAG_FLASHENERGY, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FlashEnergy", NULL },

  { EXIFTAG_SPATIALFREQUENCYRESPONSE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SpatialFrequencyResponse", NULL },

  { EXIFTAG_FOCALPLANEXRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneXResolution", NULL },

  { EXIFTAG_FOCALPLANEYRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneYResolution", NULL },

  { EXIFTAG_FOCALPLANERESOLUTIONUNIT, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneResolutionUnit", NULL },

  { EXIFTAG_SUBJECTLOCATION, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectLocation", NULL },

  { EXIFTAG_EXPOSUREINDEX, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureIndex", NULL },

  { EXIFTAG_SENSINGMETHOD, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SensingMethod", NULL },

  { EXIFTAG_FILESOURCE, 1, 1, TIFF_UNDEFINED, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FileSource", NULL },

  { EXIFTAG_SCENETYPE, 1, 1, TIFF_UNDEFINED, 0, TIFF_SETGET_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SceneType", NULL },

  { EXIFTAG_CFAPATTERN, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "CFAPattern", NULL },

  { EXIFTAG_CUSTOMRENDERED, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CustomRendered", NULL },

  { EXIFTAG_EXPOSUREMODE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureMode", NULL },

  { EXIFTAG_WHITEBALANCE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "WhiteBalance", NULL },

  { EXIFTAG_DIGITALZOOMRATIO, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "DigitalZoomRatio", NULL },

  { EXIFTAG_FOCALLENGTHIN35MMFILM, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalLengthIn35mmFilm", NULL },

  { EXIFTAG_SCENECAPTURETYPE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SceneCaptureType", NULL },

  { EXIFTAG_GAINCONTROL, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "GainControl", NULL },

  { EXIFTAG_CONTRAST, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Contrast", NULL },

  { EXIFTAG_SATURATION, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Saturation", NULL },

  { EXIFTAG_SHARPNESS, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Sharpness", NULL },

  { EXIFTAG_DEVICESETTINGDESCRIPTION, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "DeviceSettingDescription", NULL },

  { EXIFTAG_SUBJECTDISTANCERANGE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SubjectDistanceRange", NULL },

  { EXIFTAG_IMAGEUNIQUEID, 33, 33, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ImageUniqueID", NULL },

  { EXIFTAG_CAMERAOWNERNAME, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CameraOwnerName", NULL },

  { EXIFTAG_BODYSERIALNUMBER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "BodySerialNumber", NULL },

  { EXIFTAG_LENSSPECIFICATION, 4, 4, TIFF_RATIONAL, 0, TIFF_SETGET_C0_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensSpecification", NULL },

  { EXIFTAG_LENSMAKE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensMake", NULL },

  { EXIFTAG_LENSMODEL, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensModel", NULL },

  { EXIFTAG_LENSSERIALNUMBER, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "LensSerialNumber", NULL },

  { EXIFTAG_GAMMA, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_FLOAT, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Gamma", NULL },

  { EXIFTAG_COMPOSITEIMAGE, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CompositeImage", NULL },

  { EXIFTAG_SOURCEIMAGENUMBEROFCOMPOSITEIMAGE, 2, 2, TIFF_SHORT, 0, TIFF_SETGET_C0_UINT16, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "SourceImageNumberOfCompositeImage", NULL },

  { EXIFTAG_SOURCEEXPOSURETIMESOFCOMPOSITEIMAGE, -1, -1, TIFF_UNDEFINED, 0, TIFF_SETGET_C16_UINT8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 1, "SourceExposureTimesOfCompositeImage", NULL }

};

/*

 * EXIF-GPS tags  (Version 2.31, July 2016; nothing changed for version 2.32 May 2019)

 */

static const TIFFField

gpsFields[] = {

  /*  For the GPS tag definitions in gpsFields[] the standard definition for Rationals is TIFF_SETGET_DOUBLE and TIFF_SETGET_C0_FLOAT.

   *-- ATTENTION: After the upgrade with Rational2Double, the GPSTAG values can now be written and also read in double precision!

   *              In order to achieve double precision for GPS tags:

   *              Standard definitions for GPSTAG is kept to TIFF_SETGET_DOUBLE 

   *              and TIFF_SETGET_C0_FLOAT is changed to TIFF_SETGET_C0_DOUBLE.

   */

  {   GPSTAG_VERSIONID  , 4, 4,   TIFF_BYTE , 0,  TIFF_SETGET_C0_UINT8  , TIFF_SETGET_UINT8 , FIELD_CUSTOM  , 1, 0,   "VersionID", NULL },

  {   GPSTAG_LATITUDEREF  , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "LatitudeRef", NULL },

  {   GPSTAG_LATITUDE , 3, 3, TIFF_RATIONAL , 0,  TIFF_SETGET_C0_DOUBLE , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Latitude", NULL },

  {   GPSTAG_LONGITUDEREF , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "LongitudeRef", NULL },

  {   GPSTAG_LONGITUDE  , 3, 3, TIFF_RATIONAL , 0,  TIFF_SETGET_C0_DOUBLE , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Longitude", NULL },

  {   GPSTAG_ALTITUDEREF  , 1, 1, TIFF_BYTE , 0,  TIFF_SETGET_UINT8 , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "AltitudeRef", NULL },

  {   GPSTAG_ALTITUDE , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Altitude", NULL },

  {   GPSTAG_TIMESTAMP  , 3, 3, TIFF_RATIONAL , 0,  TIFF_SETGET_C0_DOUBLE , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "TimeStamp", NULL },

  {   GPSTAG_SATELLITES , -1, -1, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Satellites", NULL },

  {   GPSTAG_STATUS , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Status", NULL },

  {   GPSTAG_MEASUREMODE  , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "MeasureMode", NULL },

  {   GPSTAG_DOP  , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DOP", NULL },

  {   GPSTAG_SPEEDREF , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "SpeedRef", NULL },

  {   GPSTAG_SPEED  , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Speed", NULL },

  {   GPSTAG_TRACKREF , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "TrackRef", NULL },

  {   GPSTAG_TRACK  , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Track", NULL },

  {   GPSTAG_IMGDIRECTIONREF  , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "ImgDirectionRef", NULL },

  {   GPSTAG_IMGDIRECTION , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "ImgDirection", NULL },

  {   GPSTAG_MAPDATUM , -1, -1, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "MapDatum", NULL },

  {   GPSTAG_DESTLATITUDEREF  , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestLatitudeRef", NULL },

  {   GPSTAG_DESTLATITUDE , 3, 3, TIFF_RATIONAL , 0,  TIFF_SETGET_C0_DOUBLE , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestLatitude", NULL },

  {   GPSTAG_DESTLONGITUDEREF , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestLongitudeRef", NULL },

  {   GPSTAG_DESTLONGITUDE  , 3, 3, TIFF_RATIONAL , 0,  TIFF_SETGET_C0_DOUBLE , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestLongitude", NULL },

  {   GPSTAG_DESTBEARINGREF , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestBearingRef", NULL },

  {   GPSTAG_DESTBEARING  , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestBearing", NULL },

  {   GPSTAG_DESTDISTANCEREF  , 2, 2, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestDistanceRef", NULL },

  {   GPSTAG_DESTDISTANCE , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DestDistance", NULL },

  {   GPSTAG_PROCESSINGMETHOD , -1, -1, TIFF_UNDEFINED  , 0,  TIFF_SETGET_C16_UINT8 , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 1,   "ProcessingMethod", NULL },

  {   GPSTAG_AREAINFORMATION  , -1, -1, TIFF_UNDEFINED  , 0,  TIFF_SETGET_C16_UINT8 , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 1,   "AreaInformation", NULL },

  {   GPSTAG_DATESTAMP  , 11, 11, TIFF_ASCII  , 0,  TIFF_SETGET_ASCII , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "DateStamp", NULL },

  {   GPSTAG_DIFFERENTIAL , 1, 1, TIFF_SHORT  , 0,  TIFF_SETGET_UINT16  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "Differential", NULL },

  {   GPSTAG_GPSHPOSITIONINGERROR , 1, 1, TIFF_RATIONAL , 0,  TIFF_SETGET_DOUBLE  , TIFF_SETGET_UNDEFINED , FIELD_CUSTOM  , 1, 0,   "HorizontalPositioningError", NULL }

};

static const TIFFFieldArray

tiffFieldArray = { tfiatImage, 0, TIFFArrayCount(tiffFields), (TIFFField*) tiffFields };

static const TIFFFieldArray

exifFieldArray = { tfiatExif, 0, TIFFArrayCount(exifFields), (TIFFField*) exifFields };

static const TIFFFieldArray

gpsFieldArray = { tfiatGps, 0, TIFFArrayCount(gpsFields), (TIFFField*) gpsFields };

/*

 *  We have our own local lfind() equivalent to avoid subtle differences

 *  in types passed to lfind() on different systems. 

 */

static void *

td_lfind(const void *key, const void *base, size_t *nmemb, size_t size,

         int(*compar)(const void *, const void *))

{

    char *element, *end;

    end = (char *)base + *nmemb * size;

    for (element = (char *)base; element < end; element += size)

        if (!compar(key, element))   /* key found */

            return element;

    return NULL;

}

const TIFFFieldArray*

_TIFFGetFields(void)

{

  return(&tiffFieldArray);

}

const TIFFFieldArray*

_TIFFGetExifFields(void)

{

  return(&exifFieldArray);

}

const TIFFFieldArray*

_TIFFGetGpsFields(void)

{

  return(&gpsFieldArray);

}

void

_TIFFSetupFields(TIFF* tif, const TIFFFieldArray* fieldarray)

{

  if (tif->tif_fields && tif->tif_nfields > 0) {

    uint32_t i;

    for (i = 0; i < tif->tif_nfields; i++) {

      TIFFField *fld = tif->tif_fields[i];

      if (fld->field_bit == FIELD_CUSTOM &&

        strncmp("Tag ", fld->field_name, 4) == 0) {

          _TIFFfree(fld->field_name);

          _TIFFfree(fld);

        }

    }

    _TIFFfree(tif->tif_fields);

    tif->tif_fields = NULL;

    tif->tif_nfields = 0;

  }

  if (!_TIFFMergeFields(tif, fieldarray->fields, fieldarray->count)) {

    TIFFErrorExt(tif->tif_clientdata, "_TIFFSetupFields",

           "Setting up field info failed");

  }

}

static int

tagCompare(const void* a, const void* b)

{

  const TIFFField* ta = *(const TIFFField**) a;

  const TIFFField* tb = *(const TIFFField**) b;

  /* NB: be careful of return values for 16-bit platforms */

  if (ta->field_tag != tb->field_tag)

    return (int)ta->field_tag - (int)tb->field_tag;

  else

    return (ta->field_type == TIFF_ANY) ?

      0 : ((int)tb->field_type - (int)ta->field_type);

}

static int

tagNameCompare(const void* a, const void* b)

{

  const TIFFField* ta = *(const TIFFField**) a;

  const TIFFField* tb = *(const TIFFField**) b;

  int ret = strcmp(ta->field_name, tb->field_name);

  if (ret)

    return ret;

  else

    return (ta->field_type == TIFF_ANY) ?

      0 : ((int)tb->field_type - (int)ta->field_type);

}

int

_TIFFMergeFields(TIFF* tif, const TIFFField info[], uint32_t n)

{

  static const char module[] = "_TIFFMergeFields";

  static const char reason[] = "for fields array";

  /* TIFFField** tp; */

  uint32_t i;

        tif->tif_foundfield = NULL;

  if (tif->tif_fields && tif->tif_nfields > 0) {

    tif->tif_fields = (TIFFField**)

      _TIFFCheckRealloc(tif, tif->tif_fields,

            (tif->tif_nfields + n),

            sizeof(TIFFField *), reason);

  } else {

    tif->tif_fields = (TIFFField **)

      _TIFFCheckMalloc(tif, n, sizeof(TIFFField *),

           reason);

  }

  if (!tif->tif_fields) {

    TIFFErrorExt(tif->tif_clientdata, module,

           "Failed to allocate fields array");

    return 0;

  }

  /* tp = tif->tif_fields + tif->tif_nfields; */

  for (i = 0; i < n; i++) {

    const TIFFField *fip =

      TIFFFindField(tif, info[i].field_tag, TIFF_ANY);

                /* only add definitions that aren't already present */

    if (!fip) {

                        tif->tif_fields[tif->tif_nfields] = (TIFFField *) (info+i);

                        tif->tif_nfields++;

                }

  }

        /* Sort the field info by tag number */

  qsort(tif->tif_fields, tif->tif_nfields,

        sizeof(TIFFField *), tagCompare);

  return n;

}

void

_TIFFPrintFieldInfo(TIFF* tif, FILE* fd)

{

  uint32_t i;

  fprintf(fd, "%s: \n", tif->tif_name);

  for (i = 0; i < tif->tif_nfields; i++) {

    const TIFFField* fip = tif->tif_fields[i];

    fprintf(fd, "field[%2d] %5lu, %2d, %2d, %d, %2d, %5s, %5s, %s\n"

      , (int)i

      , (unsigned long) fip->field_tag

      , fip->field_readcount, fip->field_writecount

      , fip->field_type

      , fip->field_bit

      , fip->field_oktochange ? "TRUE" : "FALSE"

      , fip->field_passcount ? "TRUE" : "FALSE"

      , fip->field_name

    );

  }

}

/*

 * Return size of TIFFDataType in bytes

 */

int

TIFFDataWidth(TIFFDataType type)

{

  switch(type)

  {

    case 0:  /* nothing */

    case TIFF_BYTE:

    case TIFF_ASCII:

    case TIFF_SBYTE:

    case TIFF_UNDEFINED:

      return 1;

    case TIFF_SHORT:

    case TIFF_SSHORT:

      return 2;

    case TIFF_LONG:

    case TIFF_SLONG:

    case TIFF_FLOAT:

    case TIFF_IFD:

      return 4;

    case TIFF_RATIONAL:

    case TIFF_SRATIONAL:

    case TIFF_DOUBLE:

    case TIFF_LONG8:

    case TIFF_SLONG8:

    case TIFF_IFD8:

      return 8;

    default:

      return 0; /* will return 0 for unknown types */

  }

}

/*

 * Return size of TIFFDataType in bytes.

 *

 * XXX: We need a separate function to determine the space needed

 * to store the value. For TIFF_RATIONAL values TIFFDataWidth() returns 8,

 * but we use 4-byte float to represent rationals.

 */

int

_TIFFDataSize(TIFFDataType type)

{

  switch (type)

  {

    case TIFF_BYTE:

    case TIFF_SBYTE:

    case TIFF_ASCII:

    case TIFF_UNDEFINED:

        return 1;

    case TIFF_SHORT:

    case TIFF_SSHORT:

        return 2;

    case TIFF_LONG:

    case TIFF_SLONG:

    case TIFF_FLOAT:

    case TIFF_IFD:

    case TIFF_RATIONAL:

    case TIFF_SRATIONAL:

        return 4;

    case TIFF_DOUBLE:

    case TIFF_LONG8:

    case TIFF_SLONG8:

    case TIFF_IFD8:

        return 8;

    default:

        return 0;

  }

}

/*

 * Rational2Double: 

 * Return size of TIFFSetGetFieldType in bytes.

 *

 * XXX: TIFF_RATIONAL values for FIELD_CUSTOM are stored internally as 4-byte float.

 * However, some of them should be stored internally as 8-byte double. 

 * This is now managed by the SetGetField of the tag-definition!

 */

int

_TIFFSetGetFieldSize(TIFFSetGetFieldType setgettype)

{

  switch (setgettype)

  {

    case TIFF_SETGET_UNDEFINED:

    case TIFF_SETGET_ASCII:

    case TIFF_SETGET_C0_ASCII:

    case TIFF_SETGET_C16_ASCII:

    case TIFF_SETGET_C32_ASCII:

    case TIFF_SETGET_OTHER:

        return 0;

    case TIFF_SETGET_UINT8:

    case TIFF_SETGET_SINT8:

    case TIFF_SETGET_C0_UINT8:

    case TIFF_SETGET_C0_SINT8:

    case TIFF_SETGET_C16_UINT8:

    case TIFF_SETGET_C16_SINT8:

    case TIFF_SETGET_C32_UINT8:

    case TIFF_SETGET_C32_SINT8:

        return 1;

    case TIFF_SETGET_UINT16:

    case TIFF_SETGET_SINT16:

    case TIFF_SETGET_C0_UINT16:

    case TIFF_SETGET_C0_SINT16:

    case TIFF_SETGET_C16_UINT16:

    case TIFF_SETGET_C16_SINT16:

    case TIFF_SETGET_C32_UINT16:

    case TIFF_SETGET_C32_SINT16:

        return 2;

    case TIFF_SETGET_INT:

    case TIFF_SETGET_UINT32:

    case TIFF_SETGET_SINT32:

    case TIFF_SETGET_FLOAT:

    case TIFF_SETGET_UINT16_PAIR:

    case TIFF_SETGET_C0_UINT32:

    case TIFF_SETGET_C0_SINT32:

    case TIFF_SETGET_C0_FLOAT:

    case TIFF_SETGET_C16_UINT32:

    case TIFF_SETGET_C16_SINT32:

    case TIFF_SETGET_C16_FLOAT:

    case TIFF_SETGET_C32_UINT32:

    case TIFF_SETGET_C32_SINT32:

    case TIFF_SETGET_C32_FLOAT:

        return 4;

    case TIFF_SETGET_UINT64:

    case TIFF_SETGET_SINT64:

    case TIFF_SETGET_DOUBLE:

    case TIFF_SETGET_IFD8:

    case TIFF_SETGET_C0_UINT64:

    case TIFF_SETGET_C0_SINT64:

    case TIFF_SETGET_C0_DOUBLE:

    case TIFF_SETGET_C0_IFD8:

    case TIFF_SETGET_C16_UINT64:

    case TIFF_SETGET_C16_SINT64:

    case TIFF_SETGET_C16_DOUBLE:

    case TIFF_SETGET_C16_IFD8:

    case TIFF_SETGET_C32_UINT64:

    case TIFF_SETGET_C32_SINT64:

    case TIFF_SETGET_C32_DOUBLE:

    case TIFF_SETGET_C32_IFD8:

        return 8;

    default:

        return 0;

  }

} /*-- _TIFFSetGetFieldSize --- */

const TIFFField*

TIFFFindField(TIFF* tif, uint32_t tag, TIFFDataType dt)

{

  TIFFField key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0, 0, 0, NULL, NULL};

  TIFFField* pkey = &key;

  const TIFFField **ret;

  if (tif->tif_foundfield && tif->tif_foundfield->field_tag == tag &&

      (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))

    return tif->tif_foundfield;

  /* If we are invoked with no field information, then just return. */

  if (!tif->tif_fields)

    return NULL;

  /* NB: use sorted search (e.g. binary search) */

  key.field_tag = tag;

  key.field_type = dt;

  ret = (const TIFFField **) bsearch(&pkey, tif->tif_fields,

             tif->tif_nfields,

             sizeof(TIFFField *), tagCompare);

  return tif->tif_foundfield = (ret ? *ret : NULL);

}

static const TIFFField*

_TIFFFindFieldByName(TIFF* tif, const char *field_name, TIFFDataType dt)

{

  TIFFField key = {0, 0, 0, TIFF_NOTYPE, 0, 0, 0, 0, 0, 0, NULL, NULL};

  TIFFField* pkey = &key;

  const TIFFField **ret;

  if (tif->tif_foundfield

      && streq(tif->tif_foundfield->field_name, field_name)

      && (dt == TIFF_ANY || dt == tif->tif_foundfield->field_type))

    return (tif->tif_foundfield);

  /* If we are invoked with no field information, then just return. */

  if (!tif->tif_fields)

    return NULL;

  /* NB: use linear search since list is sorted by key#, not name */

  key.field_name = (char *)field_name;

  key.field_type = dt;

  ret = (const TIFFField **) 

            td_lfind(&pkey, tif->tif_fields, &tif->tif_nfields,

                     sizeof(TIFFField *), tagNameCompare);

  return tif->tif_foundfield = (ret ? *ret : NULL);

}

const TIFFField*

TIFFFieldWithTag(TIFF* tif, uint32_t tag)

{

  const TIFFField* fip = TIFFFindField(tif, tag, TIFF_ANY);

  if (!fip) {

    TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithTag",

           "Internal error, unknown tag 0x%x",

           (unsigned int) tag);

  }

  return (fip);

}

const TIFFField*

TIFFFieldWithName(TIFF* tif, const char *field_name)

{

  const TIFFField* fip =

    _TIFFFindFieldByName(tif, field_name, TIFF_ANY);

  if (!fip) {

    TIFFErrorExt(tif->tif_clientdata, "TIFFFieldWithName",

           "Internal error, unknown tag %s", field_name);

  }

  return (fip);

}

uint32_t

TIFFFieldTag(const TIFFField* fip)

{

  return fip->field_tag;

}

const char *

TIFFFieldName(const TIFFField* fip)

{

  return fip->field_name;

}

TIFFDataType

TIFFFieldDataType(const TIFFField* fip)

{

  return fip->field_type;

}

int

TIFFFieldPassCount(const TIFFField* fip)

{

  return fip->field_passcount;

}

int

TIFFFieldReadCount(const TIFFField* fip)

{

  return fip->field_readcount;

}

int

TIFFFieldWriteCount(const TIFFField* fip)

{

  return fip->field_writecount;

}

const TIFFField*

_TIFFFindOrRegisterField(TIFF *tif, uint32_t tag, TIFFDataType dt)

{

  const TIFFField *fld;

  fld = TIFFFindField(tif, tag, dt);

  if (fld == NULL) {

    fld = _TIFFCreateAnonField(tif, tag, dt);

    if (!_TIFFMergeFields(tif, fld, 1))

      return NULL;

  }

  return fld;

}

TIFFField*

_TIFFCreateAnonField(TIFF *tif, uint32_t tag, TIFFDataType field_type)

{

  TIFFField *fld;

  (void) tif;

  fld = (TIFFField *) _TIFFmalloc(sizeof (TIFFField));

  if (fld == NULL)

      return NULL;

  _TIFFmemset(fld, 0, sizeof(TIFFField));

  fld->field_tag = tag;

  fld->field_readcount = TIFF_VARIABLE2;

  fld->field_writecount = TIFF_VARIABLE2;

  fld->field_type = field_type;

  fld->reserved = 0;

  switch (field_type)

  {

    case TIFF_BYTE:

    case TIFF_UNDEFINED:

      fld->set_field_type = TIFF_SETGET_C32_UINT8;

      fld->get_field_type = TIFF_SETGET_C32_UINT8;

      break;

    case TIFF_ASCII:

      fld->set_field_type = TIFF_SETGET_C32_ASCII;

      fld->get_field_type = TIFF_SETGET_C32_ASCII;

      break;

    case TIFF_SHORT:

      fld->set_field_type = TIFF_SETGET_C32_UINT16;

      fld->get_field_type = TIFF_SETGET_C32_UINT16;

      break;

    case TIFF_LONG:

      fld->set_field_type = TIFF_SETGET_C32_UINT32;

      fld->get_field_type = TIFF_SETGET_C32_UINT32;

      break;

    case TIFF_RATIONAL:

    case TIFF_SRATIONAL:

    case TIFF_FLOAT:

      fld->set_field_type = TIFF_SETGET_C32_FLOAT;

      fld->get_field_type = TIFF_SETGET_C32_FLOAT;

      break;

    case TIFF_SBYTE:

      fld->set_field_type = TIFF_SETGET_C32_SINT8;

      fld->get_field_type = TIFF_SETGET_C32_SINT8;

      break;

    case TIFF_SSHORT:

      fld->set_field_type = TIFF_SETGET_C32_SINT16;

      fld->get_field_type = TIFF_SETGET_C32_SINT16;

      break;

    case TIFF_SLONG:

      fld->set_field_type = TIFF_SETGET_C32_SINT32;

      fld->get_field_type = TIFF_SETGET_C32_SINT32;

      break;

    case TIFF_DOUBLE:

      fld->set_field_type = TIFF_SETGET_C32_DOUBLE;

      fld->get_field_type = TIFF_SETGET_C32_DOUBLE;

      break;

    case TIFF_IFD:

    case TIFF_IFD8:

      fld->set_field_type = TIFF_SETGET_C32_IFD8;

      fld->get_field_type = TIFF_SETGET_C32_IFD8;

      break;

    case TIFF_LONG8:

      fld->set_field_type = TIFF_SETGET_C32_UINT64;

      fld->get_field_type = TIFF_SETGET_C32_UINT64;

      break;

    case TIFF_SLONG8:

      fld->set_field_type = TIFF_SETGET_C32_SINT64;

      fld->get_field_type = TIFF_SETGET_C32_SINT64;

      break;

    default:

      fld->set_field_type = TIFF_SETGET_UNDEFINED;

      fld->get_field_type = TIFF_SETGET_UNDEFINED;

      break;

  }

  fld->field_bit = FIELD_CUSTOM;

  fld->field_oktochange = TRUE;

  fld->field_passcount = TRUE;

  fld->field_name = (char *) _TIFFmalloc(32);

  if (fld->field_name == NULL) {

      _TIFFfree(fld);

      return NULL;

  }

  fld->field_subfields = NULL;

  /* 

   * note that this name is a special sign to TIFFClose() and

   * _TIFFSetupFields() to free the field

   */

  (void) snprintf(fld->field_name, 32, "Tag %d", (int) tag);

  return fld;    

}

/****************************************************************************

 *               O B S O L E T E D    I N T E R F A C E S

 *

 * Don't use this stuff in your applications, it may be removed in the future

 * libtiff versions.

 ****************************************************************************/

static TIFFSetGetFieldType

_TIFFSetGetType(TIFFDataType type, short count, unsigned char passcount)

{

  if (type == TIFF_ASCII && count == TIFF_VARIABLE && passcount == 0)

    return TIFF_SETGET_ASCII;

  else if (count == 1 && passcount == 0) {

    switch (type)

    {

      case TIFF_BYTE:

      case TIFF_UNDEFINED:

        return TIFF_SETGET_UINT8;

      case TIFF_ASCII:

        return TIFF_SETGET_ASCII;

      case TIFF_SHORT:

        return TIFF_SETGET_UINT16;

      case TIFF_LONG:

        return TIFF_SETGET_UINT32;

      case TIFF_RATIONAL:

      case TIFF_SRATIONAL:

      case TIFF_FLOAT:

        return TIFF_SETGET_FLOAT;

      case TIFF_SBYTE:

        return TIFF_SETGET_SINT8;

      case TIFF_SSHORT:

        return TIFF_SETGET_SINT16;

      case TIFF_SLONG:

        return TIFF_SETGET_SINT32;

      case TIFF_DOUBLE:

        return TIFF_SETGET_DOUBLE;

      case TIFF_IFD:

      case TIFF_IFD8:

        return TIFF_SETGET_IFD8;

      case TIFF_LONG8:

        return TIFF_SETGET_UINT64;

      case TIFF_SLONG8:

        return TIFF_SETGET_SINT64;

      default:

        return TIFF_SETGET_UNDEFINED;

    }

  }

  else if (count >= 1 && passcount == 0) {

    switch (type)

    {

      case TIFF_BYTE:

      case TIFF_UNDEFINED:

        return TIFF_SETGET_C0_UINT8;

      case TIFF_ASCII:

        return TIFF_SETGET_C0_ASCII;

      case TIFF_SHORT:

        return TIFF_SETGET_C0_UINT16;

      case TIFF_LONG:

        return TIFF_SETGET_C0_UINT32;

      case TIFF_RATIONAL:

      case TIFF_SRATIONAL:

      case TIFF_FLOAT:

        return TIFF_SETGET_C0_FLOAT;

      case TIFF_SBYTE:

        return TIFF_SETGET_C0_SINT8;

      case TIFF_SSHORT:

        return TIFF_SETGET_C0_SINT16;

      case TIFF_SLONG:

        return TIFF_SETGET_C0_SINT32;

      case TIFF_DOUBLE:

        return TIFF_SETGET_C0_DOUBLE;

      case TIFF_IFD:

      case TIFF_IFD8:

        return TIFF_SETGET_C0_IFD8;

      case TIFF_LONG8:

        return TIFF_SETGET_C0_UINT64;