text: /* $Id: tif_dirinfo.c,v 1.117 2012-08-19 16:56:34 bfriesen Exp $ */
  
  /*
   * 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 interprete the -1, -2 and -3
   *       values accordingly.
   */
  
  static TIFFFieldArray tiffFieldArray;
  static TIFFFieldArray exifFieldArray;
  
  static 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_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_RESOLUTION, 1, 0, "XResolution", NULL },
  	{ TIFFTAG_YRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, 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_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_POSITION, 1, 0, "XPosition", NULL },
  	{ TIFFTAG_YPOSITION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, 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 },
  	{ 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_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_LONG, 0, TIFF_SETGET_C32_UINT32, 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 },
  	{ TIFFTAG_EXIFIFD, 1, 1, TIFF_IFD8, 0, TIFF_SETGET_IFD8, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "EXIFIFDOffset", &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, 0, 0, "GPSIFDOffset", NULL },
  	{ 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_DOUBLE, 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_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineExposure", NULL },
  	{ TIFFTAG_BASELINENOISE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "BaselineNoise", NULL },
  	{ TIFFTAG_BASELINESHARPNESS, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, 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_DOUBLE, 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_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "ChromaBlurRadius", NULL },
  	{ TIFFTAG_ANTIALIASSTRENGTH, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 0, 0, "AntiAliasStrength", NULL },
  	{ TIFFTAG_SHADOWSCALE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, 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" },
      { TIFFTAG_GLOBALPARAMETERSIFD, 1, 1, TIFF_IFD, 0, TIFF_SETGET_UINT32, 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 DNG tags */
  	/* begin pseudo tags */
  };
  
  static TIFFField
  exifFields[] = {
  	{ EXIFTAG_EXPOSURETIME, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureTime", NULL },
  	{ EXIFTAG_FNUMBER, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, 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_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_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_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "CompressedBitsPerPixel", NULL },
  	{ EXIFTAG_SHUTTERSPEEDVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ShutterSpeedValue", NULL },
  	{ EXIFTAG_APERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ApertureValue", NULL },
  	{ EXIFTAG_BRIGHTNESSVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "BrightnessValue", NULL },
  	{ EXIFTAG_EXPOSUREBIASVALUE, 1, 1, TIFF_SRATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "ExposureBiasValue", NULL },
  	{ EXIFTAG_MAXAPERTUREVALUE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "MaxApertureValue", NULL },
  	{ EXIFTAG_SUBJECTDISTANCE, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, 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_DOUBLE, 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_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_DOUBLE, 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_DOUBLE, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "FocalPlaneXResolution", NULL },
  	{ EXIFTAG_FOCALPLANEYRESOLUTION, 1, 1, TIFF_RATIONAL, 0, TIFF_SETGET_DOUBLE, 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_DOUBLE, 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_DOUBLE, 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_DOUBLE, 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 }
  };
  
  static TIFFFieldArray
  tiffFieldArray = { tfiatImage, 0, TIFFArrayCount(tiffFields), tiffFields };
  static TIFFFieldArray
  exifFieldArray = { tfiatExif, 0, TIFFArrayCount(exifFields), exifFields };
  
  /*
   *  We have our own local lfind() equivelent 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);
  }
  
  void
  _TIFFSetupFields(TIFF* tif, const TIFFFieldArray* fieldarray)
  {
  	if (tif->tif_fields && tif->tif_nfields > 0) {
  		uint32 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 n)
  {
  	static const char module[] = "_TIFFMergeFields";
  	static const char reason[] = "for fields array";
  	/* TIFFField** tp; */
  	uint32 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 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;
  	}
  }
  
  const TIFFField*
  TIFFFindField(TIFF* tif, uint32 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);
  }
  
  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 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
  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 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 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
  	 */
  	sprintf(fld->field_name, "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;
  			case TIFF_SLONG8:
  				return TIFF_SETGET_C0_SINT64;
  			default:
  				return TIFF_SETGET_UNDEFINED;
  		}
  	}
  
  	else if (count == TIFF_VARIABLE && passcount == 1) {
  		switch (type)
  		{
  			case TIFF_BYTE:
  			case TIFF_UNDEFINED:
  				return TIFF_SETGET_C16_UINT8;
  			case TIFF_ASCII:
  				return TIFF_SETGET_C16_ASCII;
  			case TIFF_SHORT:
  				return TIFF_SETGET_C16_UINT16;
  			case TIFF_LONG:
  				return TIFF_SETGET_C16_UINT32;
  			case TIFF_RATIONAL:
  			case TIFF_SRATIONAL:
  			case TIFF_FLOAT:
  				return TIFF_SETGET_C16_FLOAT;
  			case TIFF_SBYTE:
  				return TIFF_SETGET_C16_SINT8;
  			case TIFF_SSHORT:
  				return TIFF_SETGET_C16_SINT16;
  			case TIFF_SLONG:
  				return TIFF_SETGET_C16_SINT32;
  			case TIFF_DOUBLE:
  				return TIFF_SETGET_C16_DOUBLE;
  			case TIFF_IFD:
  			case TIFF_IFD8:
  				return TIFF_SETGET_C16_IFD8;
  			case TIFF_LONG8:
  				return TIFF_SETGET_C16_UINT64;
  			case TIFF_SLONG8:
  				return TIFF_SETGET_C16_SINT64;
  			default:
  				return TIFF_SETGET_UNDEFINED;
  		}
  	}
  
  	else if (count == TIFF_VARIABLE2 && passcount == 1) {
  		switch (type)
  		{
  			case TIFF_BYTE:
  			case TIFF_UNDEFINED:
  				return TIFF_SETGET_C32_UINT8;
  			case TIFF_ASCII:
  				return TIFF_SETGET_C32_ASCII;
  			case TIFF_SHORT:
  				return TIFF_SETGET_C32_UINT16;
  			case TIFF_LONG:
  				return TIFF_SETGET_C32_UINT32;
  			case TIFF_RATIONAL:
  			case TIFF_SRATIONAL:
  			case TIFF_FLOAT:
  				return TIFF_SETGET_C32_FLOAT;
  			case TIFF_SBYTE:
  				return TIFF_SETGET_C32_SINT8;
  			case TIFF_SSHORT:
  				return TIFF_SETGET_C32_SINT16;
  			case TIFF_SLONG:
  				return TIFF_SETGET_C32_SINT32;
  			case TIFF_DOUBLE:
  				return TIFF_SETGET_C32_DOUBLE;
  			case TIFF_IFD:
  			case TIFF_IFD8:
  				return TIFF_SETGET_C32_IFD8;
  			case TIFF_LONG8:
  				return TIFF_SETGET_C32_UINT64;
  			case TIFF_SLONG8:
  				return TIFF_SETGET_C32_SINT64;
  			default:
  				return TIFF_SETGET_UNDEFINED;
  		}
  	}
  
  	return TIFF_SETGET_UNDEFINED;
  }
  
  int
  TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], uint32 n)
  {
  	static const char module[] = "TIFFMergeFieldInfo";
  	static const char reason[] = "for fields array";
  	TIFFField *tp;
  	size_t nfields;
  	uint32 i;
  
  	if (tif->tif_nfieldscompat > 0) {
  		tif->tif_fieldscompat = (TIFFFieldArray *)
  			_TIFFCheckRealloc(tif, tif->tif_fieldscompat,
  					  tif->tif_nfieldscompat + 1,
  					  sizeof(TIFFFieldArray), reason);
  	} else {
  		tif->tif_fieldscompat = (TIFFFieldArray *)
  			_TIFFCheckMalloc(tif, 1, sizeof(TIFFFieldArray),
  					 reason);
  	}
  	if (!tif->tif_fieldscompat) {
  		TIFFErrorExt(tif->tif_clientdata, module,
  			     "Failed to allocate fields array");
  		return -1;
  	}
  	nfields = tif->tif_nfieldscompat++;
  
  	tif->tif_fieldscompat[nfields].type = tfiatOther;
  	tif->tif_fieldscompat[nfields].allocated_size = n;
  	tif->tif_fieldscompat[nfields].count = n;
  	tif->tif_fieldscompat[nfields].fields =
  		(TIFFField *)_TIFFCheckMalloc(tif, n, sizeof(TIFFField),
  					      reason);
  	if (!tif->tif_fieldscompat[nfields].fields) {
  		TIFFErrorExt(tif->tif_clientdata, module,
  			     "Failed to allocate fields array");
  		return -1;
  	}
  
  	tp = tif->tif_fieldscompat[nfields].fields;
  	for (i = 0; i < n; i++) {
  		tp->field_tag = info[i].field_tag;
  		tp->field_readcount = info[i].field_readcount;
  		tp->field_writecount = info[i].field_writecount;
  		tp->field_type = info[i].field_type;
  		tp->reserved = 0;
  		tp->set_field_type =
  		     _TIFFSetGetType(info[i].field_type,
  				info[i].field_readcount,
  				info[i].field_passcount);
  		tp->get_field_type =
  		     _TIFFSetGetType(info[i].field_type,
  				info[i].field_readcount,
  				info[i].field_passcount);
  		tp->field_bit = info[i].field_bit;
  		tp->field_oktochange = info[i].field_oktochange;
  		tp->field_passcount = info[i].field_passcount;
  		tp->field_name = info[i].field_name;
  		tp->field_subfields = NULL;
  		tp++;
  	}
  
  	if (!_TIFFMergeFields(tif, tif->tif_fieldscompat[nfields].fields, n)) {
  		TIFFErrorExt(tif->tif_clientdata, module,
  			     "Setting up field info failed");
  		return -1;
  	}
  
  	return 0;
  }
  
  /* vim: set ts=8 sts=8 sw=8 noet: */
  
  /*
   * Local Variables:
   * mode: c
   * c-basic-offset: 8
   * fill-column: 78
   * End:
   */
  