"

 COPYRIGHT (c) 1991 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

"{ Package: 'stx:libview2' }"

"{ NameSpace: Smalltalk }"

ImageReader subclass:#TIFFReader

	instanceVariableNames:'planarConfiguration subFileType stripOffsets rowsPerStrip

		fillOrder compression group3options predictor stripByteCounts

		currentOffset stripOffsetsPos stripByteCountsPos stripRowCounts

		bitsPerSamplePos colorMapPos orientation isBigTiff tileOffsets

		tileByteCounts tileWidth tileLength sampleFormat minSampleValue

		maxSampleValue subIfds decodeMetaTags loadFullResolutionImage

		isDNGImage'

	classVariableNames:'Verbose COMPRESSION_NONE COMPRESSION_CCITTRLE

		COMPRESSION_CCITTFAX3 COMPRESSION_CCITTFAX4 COMPRESSION_LZW

		COMPRESSION_OJPEG COMPRESSION_JPEG COMPRESSION_ADOBE_DEFLATE

		COMPRESSION_JBIG_T85 COMPRESSION_JBIG_T43 COMPRESSION_NEXT

		COMPRESSION_CCITTRLEW COMPRESSION_PACKBITS

		COMPRESSION_THUNDERSCAN COMPRESSION_IT8CTPAD COMPRESSION_IT8LW

		COMPRESSION_IT8MP COMPRESSION_IT8BL COMPRESSION_PIXARFILM

		COMPRESSION_PIXARLOG COMPRESSION_DEFLATE COMPRESSION_DCS

		COMPRESSION_JBIG COMPRESSION_JPEG2000 COMPRESSION_NIKON_NEF

		COMPRESSION_JBIG2 COMPRESSION_NEXT_JPEG SAMPLEFORMAT_UINT

		SAMPLEFORMAT_INT SAMPLEFORMAT_IEEEFP SAMPLEFORMAT_VOID

		SAMPLEFORMAT_COMPLEXINT SAMPLEFORMAT_COMPLEXIEEEFP

		COMPRESSION_SGILOG COMPRESSION_SGILOG24 PLANARCONFIG_CONTIG

		PLANARCONFIG_SEPARATE FILETYPE_MASK_REDUCEDIMAGE

		FILETYPE_MASK_PAGE FILETYPE_MASK_MASK'

	poolDictionaries:''

	category:'Graphics-Images-Readers'

!

Dictionary subclass:#TIFFMetaData

	instanceVariableNames:''

	classVariableNames:''

	poolDictionaries:''

	privateIn:TIFFReader

!

!TIFFReader class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1991 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

!

documentation

"

    This class knows how to read TIFF files and how to write uncompressed TIFF files.

    Implemented & Missing Features:

      - Only single image files are supported.

      - Not all formats are implemented, and of those that are, not all are tested.

        It should read with most rgb, palette, mono and greyscale images, 

        although the alpha channel is currently not supported and ignored.

        It supports reading of uncompressed, LZW, packbits and CCITT-G3 compressed images

        JPEG and many other formats are currently not implemented.

      - Only writing of uncompressed images is currently implemented.

        It should write (at least) mono, 8-bit palette and 24 bit rgb formats.

      - bigTiff is supported

      - some dng tags are supported

    More formats will come... (will they ever be needed?)

    TODO (?): 

        since I don't want to spend all of my life adding more formats here and

        reinventing the wheel, this code should be changed to use the tiff library.

        That would give us most formats and also writing capabilities for free.

        Late note: 

            I hate C and interfacing to C libraries: it almost always leads to trouble

            w.r.t. memory leaks, non-reentrancy, non-interruptability etc.

            (we recently fixed a malloc-non-reentrant bug for some architecture...)

            So its probably better to do it all in a real programming language ;-)

    [author:]

        Claus Gittinger

    [See also:]

        Image Form Icon

        BlitImageReader FaceReader GIFReader JPEGReader PBMReader PCXReader 

        ST80FormReader SunRasterReader TargaReader WindowsIconReader 

        XBMReader XPMReader XWDReader 

"

! !

!TIFFReader class methodsFor:'initialization'!

initialize

    "install myself in the Image classes fileFormat table

     for the `.tiff' and `.tif' extensions."

    MIMETypes defineImageType:'image/tiff' suffix:'tif'  reader:self info:'tiff image'.

    MIMETypes defineImageType:nil          suffix:'tiff' reader:self.

    MIMETypes defineImageType:'image/x-adobe-dng' suffix:'dng' reader:self info:'digital negative image'.

    COMPRESSION_NONE            := 1.

    COMPRESSION_CCITTRLE        := 2.

    COMPRESSION_CCITTFAX3       := 3.

    COMPRESSION_CCITTFAX4       := 4.

    COMPRESSION_LZW             := 5.

    COMPRESSION_OJPEG           := 6. "/ (old style jpeg)

    COMPRESSION_JPEG            := 7. "/ (new style jpeg)

    COMPRESSION_ADOBE_DEFLATE   := 8.

    COMPRESSION_JBIG_T85        := 9.  "/ (ITU-T T85)

    COMPRESSION_JBIG_T43        := 10. "/ (ITU-T T43)

    COMPRESSION_NEXT            := 32766. "/ (NeXT 2-bit encoding)

    COMPRESSION_CCITTRLEW       := 32771.

    COMPRESSION_PACKBITS        := 32773.

    COMPRESSION_THUNDERSCAN     := 32809. "/ (ThunderScan 4-bit encoding)

    COMPRESSION_NEXT_JPEG       := 32865. "/ (NeXT jpeg encoding)

    COMPRESSION_IT8CTPAD        := 32895.  

    COMPRESSION_IT8LW           := 32896.

    COMPRESSION_IT8MP           := 32897. 

    COMPRESSION_IT8BL           := 32898. 

    COMPRESSION_PIXARFILM       := 32908.

    COMPRESSION_PIXARLOG        := 32909. "/ (Pixar companded 11-bit ZIP encoding)

    COMPRESSION_DEFLATE         := 32946. "/ (PKZIP-style Deflate encoding)

    COMPRESSION_DCS             := 32947. "/ (kodac)

    COMPRESSION_JBIG            := 34661.

    COMPRESSION_SGILOG          := 34676. "/ (SGI 32-bit Log Luminance encoding)

    COMPRESSION_SGILOG24        := 34677. "/ (SGI 24-bit Log Luminance encoding)

    COMPRESSION_JPEG2000        := 34712. "/ JPEG2000

    COMPRESSION_NIKON_NEF       := 34713.

    COMPRESSION_JBIG2           := 34715.

    SAMPLEFORMAT_UINT           := 1.       "/ !!unsigned integer data 

    SAMPLEFORMAT_INT            := 2.       "/ !!signed integer data 

    SAMPLEFORMAT_IEEEFP         := 3.       "/ !!IEEE floating point data 

    SAMPLEFORMAT_VOID           := 4.       "/ !!untyped data 

    SAMPLEFORMAT_COMPLEXINT     := 5.       "/ !!complex signed int 

    SAMPLEFORMAT_COMPLEXIEEEFP  := 6.       "/ !!complex ieee floating 

    PLANARCONFIG_CONTIG         := 1.

    PLANARCONFIG_SEPARATE       := 2.

    FILETYPE_MASK_REDUCEDIMAGE  := 1.

    FILETYPE_MASK_PAGE          := 2.

    FILETYPE_MASK_MASK          := 4. 

"/    TYPE_NOTYPE := 0.           "/ placeholder 

"/    TYPE_BYTE   := 1.           "/ 8-bit unsigned integer 

"/    TYPE_ASCII  := 2.           "/ 8-bit bytes w/ last byte null 

"/    TYPE_SHORT  := 3.           "/ 16-bit unsigned integer 

"/    TYPE_LONG   := 4.           "/ 32-bit unsigned integer 

"/    TYPE_RATIONAL := 5.         "/ 64-bit unsigned fraction 

"/    TYPE_SBYTE  := 6.           "/ !!8-bit signed integer 

"/    TYPE_UNDEFINED  := 7.       "/ !!8-bit untyped data 

"/    TYPE_SSHORT     := 8.       "/ !!16-bit signed integer 

"/    TYPE_SLONG      := 9.       "/ !!32-bit signed integer 

"/    TYPE_SRATIONAL  := 10.      "/ !!64-bit signed fraction 

"/    TYPE_FLOAT      := 11.      "/ !!32-bit IEEE floating point 

"/    TYPE_DOUBLE     := 12.      "/ !!64-bit IEEE floating point 

"/    TYPE_IFD        := 13.      "/ %32-bit unsigned integer (offset) 

"/    TYPE_LONG8      := 16.      "/ BigTIFF 64-bit unsigned integer 

"/    TYPE_SLONG8     := 17.      "/ BigTIFF 64-bit signed integer 

"/    TYPE_IFD8       := 18.      "/ BigTIFF 64-bit unsigned integer (offset) 

    "/

    "/ TIFF tags

    "/

"/    #define TIFFTAG_SUBFILETYPE             254     /* subfile data descriptor */

"/    #define     FILETYPE_REDUCEDIMAGE       0x1     /* reduced resolution version */

"/    #define     FILETYPE_PAGE               0x2     /* one page of many */

"/    #define     FILETYPE_MASK               0x4     /* transparency mask */

"/    #define TIFFTAG_OSUBFILETYPE            255     /* +kind of data in subfile */

"/    #define     OFILETYPE_IMAGE             1       /* full resolution image data */

"/    #define     OFILETYPE_REDUCEDIMAGE      2       /* reduced size image data */

"/    #define     OFILETYPE_PAGE              3       /* one page of many */

"/    #define TIFFTAG_IMAGEWIDTH              256     /* image width in pixels */

"/    #define TIFFTAG_IMAGELENGTH             257     /* image height in pixels */

"/    #define TIFFTAG_BITSPERSAMPLE           258     /* bits per channel (sample) */

"/    #define TIFFTAG_COMPRESSION             259     /* data compression technique */

"/    #define     COMPRESSION_NONE            1       /* dump mode */

"/    #define     COMPRESSION_CCITTRLE        2       /* CCITT modified Huffman RLE */

"/    #define     COMPRESSION_CCITTFAX3       3       /* CCITT Group 3 fax encoding */

"/    #define     COMPRESSION_CCITT_T4        3       /* CCITT T.4 (TIFF 6 name) */

"/    #define     COMPRESSION_CCITTFAX4       4       /* CCITT Group 4 fax encoding */

"/    #define     COMPRESSION_CCITT_T6        4       /* CCITT T.6 (TIFF 6 name) */

"/    #define     COMPRESSION_LZW             5       /* Lempel-Ziv  & Welch */

"/    #define     COMPRESSION_OJPEG           6       /* !!6.0 JPEG */

"/    #define     COMPRESSION_JPEG            7       /* %JPEG DCT compression */

"/    #define     COMPRESSION_T85                     9       /* !!TIFF/FX T.85 JBIG compression */

"/    #define     COMPRESSION_T43                     10      /* !!TIFF/FX T.43 colour by layered JBIG compression */

"/    #define     COMPRESSION_NEXT            32766   /* NeXT 2-bit RLE */

"/    #define     COMPRESSION_CCITTRLEW       32771   /* #1 w/ word alignment */

"/    #define     COMPRESSION_PACKBITS        32773   /* Macintosh RLE */

"/    #define     COMPRESSION_THUNDERSCAN     32809   /* ThunderScan RLE */

"/    /* codes 32895-32898 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */

"/    #define     COMPRESSION_IT8CTPAD        32895   /* IT8 CT w/padding */

"/    #define     COMPRESSION_IT8LW           32896   /* IT8 Linework RLE */

"/    #define     COMPRESSION_IT8MP           32897   /* IT8 Monochrome picture */

"/    #define     COMPRESSION_IT8BL           32898   /* IT8 Binary line art */

"/    /* compression codes 32908-32911 are reserved for Pixar */

"/    #define     COMPRESSION_PIXARFILM       32908   /* Pixar companded 10bit LZW */

"/    #define     COMPRESSION_PIXARLOG        32909   /* Pixar companded 11bit ZIP */

"/    #define     COMPRESSION_DEFLATE         32946   /* Deflate compression */

"/    #define     COMPRESSION_ADOBE_DEFLATE   8       /* Deflate compression,

"/                                                       as recognized by Adobe */

"/    /* compression code 32947 is reserved for Oceana Matrix <dev@oceana.com> */

"/    #define     COMPRESSION_DCS             32947   /* Kodak DCS encoding */

"/    #define     COMPRESSION_JBIG            34661   /* ISO JBIG */

"/    #define     COMPRESSION_SGILOG          34676   /* SGI Log Luminance RLE */

"/    #define     COMPRESSION_SGILOG24        34677   /* SGI Log 24-bit packed */

"/    #define     COMPRESSION_JP2000          34712   /* Leadtools JPEG2000 */

"/    #define     COMPRESSION_LZMA            34925   /* LZMA2 */

"/    #define TIFFTAG_PHOTOMETRIC             262     /* photometric interpretation */

"/    #define     PHOTOMETRIC_MINISWHITE      0       /* min value is white */

"/    #define     PHOTOMETRIC_MINISBLACK      1       /* min value is black */

"/    #define     PHOTOMETRIC_RGB             2       /* RGB color model */

"/    #define     PHOTOMETRIC_PALETTE         3       /* color map indexed */

"/    #define     PHOTOMETRIC_MASK            4       /* $holdout mask */

"/    #define     PHOTOMETRIC_SEPARATED       5       /* !!color separations */

"/    #define     PHOTOMETRIC_YCBCR           6       /* !!CCIR 601 */

"/    #define     PHOTOMETRIC_CIELAB          8       /* !!1976 CIE L*a*b* */

"/    #define     PHOTOMETRIC_ICCLAB          9       /* ICC L*a*b* [Adobe TIFF Technote 4] */

"/    #define     PHOTOMETRIC_ITULAB          10      /* ITU L*a*b* */

"/    #define     PHOTOMETRIC_CFA             32803   /* color filter array */

"/    #define     PHOTOMETRIC_LOGL            32844   /* CIE Log2(L) */

"/    #define     PHOTOMETRIC_LOGLUV          32845   /* CIE Log2(L) (u',v') */

"/    #define TIFFTAG_THRESHHOLDING           263     /* +thresholding used on data */

"/    #define     THRESHHOLD_BILEVEL          1       /* b&w art scan */

"/    #define     THRESHHOLD_HALFTONE         2       /* or dithered scan */

"/    #define     THRESHHOLD_ERRORDIFFUSE     3       /* usually floyd-steinberg */

"/    #define TIFFTAG_CELLWIDTH               264     /* +dithering matrix width */

"/    #define TIFFTAG_CELLLENGTH              265     /* +dithering matrix height */

"/    #define TIFFTAG_FILLORDER               266     /* data order within a byte */

"/    #define     FILLORDER_MSB2LSB           1       /* most significant -> least */

"/    #define     FILLORDER_LSB2MSB           2       /* least significant -> most */

"/    #define TIFFTAG_DOCUMENTNAME            269     /* name of doc. image is from */

"/    #define TIFFTAG_IMAGEDESCRIPTION        270     /* info about image */

"/    #define TIFFTAG_MAKE                    271     /* scanner manufacturer name */

"/    #define TIFFTAG_MODEL                   272     /* scanner model name/number */

"/    #define TIFFTAG_STRIPOFFSETS            273     /* offsets to data strips */

"/    #define TIFFTAG_ORIENTATION             274     /* +image orientation */

"/    #define     ORIENTATION_TOPLEFT         1       /* row 0 top, col 0 lhs */

"/    #define     ORIENTATION_TOPRIGHT        2       /* row 0 top, col 0 rhs */

"/    #define     ORIENTATION_BOTRIGHT        3       /* row 0 bottom, col 0 rhs */

"/    #define     ORIENTATION_BOTLEFT         4       /* row 0 bottom, col 0 lhs */

"/    #define     ORIENTATION_LEFTTOP         5       /* row 0 lhs, col 0 top */

"/    #define     ORIENTATION_RIGHTTOP        6       /* row 0 rhs, col 0 top */

"/    #define     ORIENTATION_RIGHTBOT        7       /* row 0 rhs, col 0 bottom */

"/    #define     ORIENTATION_LEFTBOT         8       /* row 0 lhs, col 0 bottom */

"/    #define TIFFTAG_SAMPLESPERPIXEL         277     /* samples per pixel */

"/    #define TIFFTAG_ROWSPERSTRIP            278     /* rows per strip of data */

"/    #define TIFFTAG_STRIPBYTECOUNTS         279     /* bytes counts for strips */

"/    #define TIFFTAG_MINSAMPLEVALUE          280     /* +minimum sample value */

"/    #define TIFFTAG_MAXSAMPLEVALUE          281     /* +maximum sample value */

"/    #define TIFFTAG_XRESOLUTION             282     /* pixels/resolution in x */

"/    #define TIFFTAG_YRESOLUTION             283     /* pixels/resolution in y */

"/    #define TIFFTAG_PLANARCONFIG            284     /* storage organization */

"/    #define     PLANARCONFIG_CONTIG         1       /* single image plane */

"/    #define     PLANARCONFIG_SEPARATE       2       /* separate planes of data */

"/    #define TIFFTAG_PAGENAME                285     /* page name image is from */

"/    #define TIFFTAG_XPOSITION               286     /* x page offset of image lhs */

"/    #define TIFFTAG_YPOSITION               287     /* y page offset of image lhs */

"/    #define TIFFTAG_FREEOFFSETS             288     /* +byte offset to free block */

"/    #define TIFFTAG_FREEBYTECOUNTS          289     /* +sizes of free blocks */

"/    #define TIFFTAG_GRAYRESPONSEUNIT        290     /* $gray scale curve accuracy */

"/    #define     GRAYRESPONSEUNIT_10S        1       /* tenths of a unit */

"/    #define     GRAYRESPONSEUNIT_100S       2       /* hundredths of a unit */

"/    #define     GRAYRESPONSEUNIT_1000S      3       /* thousandths of a unit */

"/    #define     GRAYRESPONSEUNIT_10000S     4       /* ten-thousandths of a unit */

"/    #define     GRAYRESPONSEUNIT_100000S    5       /* hundred-thousandths */

"/    #define TIFFTAG_GRAYRESPONSECURVE       291     /* $gray scale response curve */

"/    #define TIFFTAG_GROUP3OPTIONS           292     /* 32 flag bits */

"/    #define TIFFTAG_T4OPTIONS               292     /* TIFF 6.0 proper name alias */

"/    #define     GROUP3OPT_2DENCODING        0x1     /* 2-dimensional coding */

"/    #define     GROUP3OPT_UNCOMPRESSED      0x2     /* data not compressed */

"/    #define     GROUP3OPT_FILLBITS          0x4     /* fill to byte boundary */

"/    #define TIFFTAG_GROUP4OPTIONS           293     /* 32 flag bits */

"/    #define TIFFTAG_T6OPTIONS               293     /* TIFF 6.0 proper name */

"/    #define     GROUP4OPT_UNCOMPRESSED      0x2     /* data not compressed */

"/    #define TIFFTAG_RESOLUTIONUNIT          296     /* units of resolutions */

"/    #define     RESUNIT_NONE                1       /* no meaningful units */

"/    #define     RESUNIT_INCH                2       /* english */

"/    #define     RESUNIT_CENTIMETER          3       /* metric */

"/    #define TIFFTAG_PAGENUMBER              297     /* page numbers of multi-page */

"/    #define TIFFTAG_COLORRESPONSEUNIT       300     /* $color curve accuracy */

"/    #define     COLORRESPONSEUNIT_10S       1       /* tenths of a unit */

"/    #define     COLORRESPONSEUNIT_100S      2       /* hundredths of a unit */

"/    #define     COLORRESPONSEUNIT_1000S     3       /* thousandths of a unit */

"/    #define     COLORRESPONSEUNIT_10000S    4       /* ten-thousandths of a unit */

"/    #define     COLORRESPONSEUNIT_100000S   5       /* hundred-thousandths */

"/    #define TIFFTAG_TRANSFERFUNCTION        301     /* !!colorimetry info */

"/    #define TIFFTAG_SOFTWARE                305     /* name & release */

"/    #define TIFFTAG_DATETIME                306     /* creation date and time */

"/    #define TIFFTAG_ARTIST                  315     /* creator of image */

"/    #define TIFFTAG_HOSTCOMPUTER            316     /* machine where created */

"/    #define TIFFTAG_PREDICTOR               317     /* prediction scheme w/ LZW */

"/    #define     PREDICTOR_NONE              1       /* no prediction scheme used */

"/    #define     PREDICTOR_HORIZONTAL        2       /* horizontal differencing */

"/    #define     PREDICTOR_FLOATINGPOINT     3       /* floating point predictor */

"/    #define TIFFTAG_WHITEPOINT              318     /* image white point */

"/    #define TIFFTAG_PRIMARYCHROMATICITIES   319     /* !!primary chromaticities */

"/    #define TIFFTAG_COLORMAP                320     /* RGB map for palette image */

"/    #define TIFFTAG_HALFTONEHINTS           321     /* !!highlight+shadow info */

"/    #define TIFFTAG_TILEWIDTH               322     /* !!tile width in pixels */

"/    #define TIFFTAG_TILELENGTH              323     /* !!tile height in pixels */

"/    #define TIFFTAG_TILEOFFSETS             324     /* !!offsets to data tiles */

"/    #define TIFFTAG_TILEBYTECOUNTS          325     /* !!byte counts for tiles */

"/    #define TIFFTAG_BADFAXLINES             326     /* lines w/ wrong pixel count */

"/    #define TIFFTAG_CLEANFAXDATA            327     /* regenerated line info */

"/    #define     CLEANFAXDATA_CLEAN          0       /* no errors detected */

"/    #define     CLEANFAXDATA_REGENERATED    1       /* receiver regenerated lines */

"/    #define     CLEANFAXDATA_UNCLEAN        2       /* uncorrected errors exist */

"/    #define TIFFTAG_CONSECUTIVEBADFAXLINES  328     /* max consecutive bad lines */

"/    #define TIFFTAG_SUBIFD                  330     /* subimage descriptors */

"/    #define TIFFTAG_INKSET                  332     /* !!inks in separated image */

"/    #define     INKSET_CMYK                 1       /* !!cyan-magenta-yellow-black color */

"/    #define     INKSET_MULTIINK             2       /* !!multi-ink or hi-fi color */

"/    #define TIFFTAG_INKNAMES                333     /* !!ascii names of inks */

"/    #define TIFFTAG_NUMBEROFINKS            334     /* !!number of inks */

"/    #define TIFFTAG_DOTRANGE                336     /* !!0% and 100% dot codes */

"/    #define TIFFTAG_TARGETPRINTER           337     /* !!separation target */

"/    #define TIFFTAG_EXTRASAMPLES            338     /* !!info about extra samples */

"/    #define     EXTRASAMPLE_UNSPECIFIED     0       /* !!unspecified data */

"/    #define     EXTRASAMPLE_ASSOCALPHA      1       /* !!associated alpha data */

"/    #define     EXTRASAMPLE_UNASSALPHA      2       /* !!unassociated alpha data */

"/    #define TIFFTAG_SAMPLEFORMAT            339     /* !!data sample format */

"/    #define     SAMPLEFORMAT_UINT           1       /* !!unsigned integer data */

"/    #define     SAMPLEFORMAT_INT            2       /* !!signed integer data */

"/    #define     SAMPLEFORMAT_IEEEFP         3       /* !!IEEE floating point data */

"/    #define     SAMPLEFORMAT_VOID           4       /* !!untyped data */

"/    #define     SAMPLEFORMAT_COMPLEXINT     5       /* !!complex signed int */

"/    #define     SAMPLEFORMAT_COMPLEXIEEEFP  6       /* !!complex ieee floating */

"/    #define TIFFTAG_SMINSAMPLEVALUE         340     /* !!variable MinSampleValue */

"/    #define TIFFTAG_SMAXSAMPLEVALUE         341     /* !!variable MaxSampleValue */

"/    #define TIFFTAG_CLIPPATH                343     /* %ClipPath

"/                                                       [Adobe TIFF technote 2] */

"/    #define TIFFTAG_XCLIPPATHUNITS          344     /* %XClipPathUnits

"/                                                       [Adobe TIFF technote 2] */

"/    #define TIFFTAG_YCLIPPATHUNITS          345     /* %YClipPathUnits

"/                                                       [Adobe TIFF technote 2] */

"/    #define TIFFTAG_INDEXED                 346     /* %Indexed

"/                                                       [Adobe TIFF Technote 3] */

"/    #define TIFFTAG_JPEGTABLES              347     /* %JPEG table stream */

"/    #define TIFFTAG_OPIPROXY                351     /* %OPI Proxy [Adobe TIFF technote] */

"/    /* Tags 400-435 are from the TIFF/FX spec */

"/    #define TIFFTAG_GLOBALPARAMETERSIFD     400     /* !! */

"/    #define TIFFTAG_PROFILETYPE                     401     /* !! */

"/    #define     PROFILETYPE_UNSPECIFIED     0       /* !! */

"/    #define     PROFILETYPE_G3_FAX          1       /* !! */

"/    #define TIFFTAG_FAXPROFILE                      402     /* !! */

"/    #define     FAXPROFILE_S                        1       /* !!TIFF/FX FAX profile S */

"/    #define     FAXPROFILE_F                        2       /* !!TIFF/FX FAX profile F */

"/    #define     FAXPROFILE_J                        3       /* !!TIFF/FX FAX profile J */

"/    #define     FAXPROFILE_C                        4       /* !!TIFF/FX FAX profile C */

"/    #define     FAXPROFILE_L                        5       /* !!TIFF/FX FAX profile L */

"/    #define     FAXPROFILE_M                        6       /* !!TIFF/FX FAX profile LM */

"/    #define TIFFTAG_CODINGMETHODS           403     /* !!TIFF/FX coding methods */

"/    #define     CODINGMETHODS_T4_1D         (1 << 1)        /* !!T.4 1D */

"/    #define     CODINGMETHODS_T4_2D         (1 << 2)        /* !!T.4 2D */

"/    #define     CODINGMETHODS_T6            (1 << 3)        /* !!T.6 */

"/    #define     CODINGMETHODS_T85           (1 << 4)        /* !!T.85 JBIG */

"/    #define     CODINGMETHODS_T42           (1 << 5)        /* !!T.42 JPEG */

"/    #define     CODINGMETHODS_T43           (1 << 6)        /* !!T.43 colour by layered JBIG */

"/    #define TIFFTAG_VERSIONYEAR                     404     /* !!TIFF/FX version year */

"/    #define TIFFTAG_MODENUMBER                      405     /* !!TIFF/FX mode number */

"/    #define TIFFTAG_DECODE                          433     /* !!TIFF/FX decode */

"/    #define TIFFTAG_IMAGEBASECOLOR          434     /* !!TIFF/FX image base colour */

"/    #define TIFFTAG_T82OPTIONS                      435     /* !!TIFF/FX T.82 options */

"/    /*

"/     * Tags 512-521 are obsoleted by Technical Note #2 which specifies a

"/     * revised JPEG-in-TIFF scheme.

"/     */

"/    #define TIFFTAG_JPEGPROC                512     /* !!JPEG processing algorithm */

"/    #define     JPEGPROC_BASELINE           1       /* !!baseline sequential */

"/    #define     JPEGPROC_LOSSLESS           14      /* !!Huffman coded lossless */

"/    #define TIFFTAG_JPEGIFOFFSET            513     /* !!pointer to SOI marker */

"/    #define TIFFTAG_JPEGIFBYTECOUNT         514     /* !!JFIF stream length */

"/    #define TIFFTAG_JPEGRESTARTINTERVAL     515     /* !!restart interval length */

"/    #define TIFFTAG_JPEGLOSSLESSPREDICTORS  517     /* !!lossless proc predictor */

"/    #define TIFFTAG_JPEGPOINTTRANSFORM      518     /* !!lossless point transform */

"/    #define TIFFTAG_JPEGQTABLES             519     /* !!Q matrix offsets */

"/    #define TIFFTAG_JPEGDCTABLES            520     /* !!DCT table offsets */

"/    #define TIFFTAG_JPEGACTABLES            521     /* !!AC coefficient offsets */

"/    #define TIFFTAG_YCBCRCOEFFICIENTS       529     /* !!RGB -> YCbCr transform */

"/    #define TIFFTAG_YCBCRSUBSAMPLING        530     /* !!YCbCr subsampling factors */

"/    #define TIFFTAG_YCBCRPOSITIONING        531     /* !!subsample positioning */

"/    #define     YCBCRPOSITION_CENTERED      1       /* !!as in PostScript Level 2 */

"/    #define     YCBCRPOSITION_COSITED       2       /* !!as in CCIR 601-1 */

"/    #define TIFFTAG_REFERENCEBLACKWHITE     532     /* !!colorimetry info */

"/    #define TIFFTAG_STRIPROWCOUNTS          559 /* !!TIFF/FX strip row counts */

"/    #define TIFFTAG_XMLPACKET               700     /* %XML packet

"/                                                       [Adobe XMP Specification,

"/                                                       January 2004 */

"/    #define TIFFTAG_OPIIMAGEID              32781   /* %OPI ImageID

"/                                                       [Adobe TIFF technote] */

"/    /* tags 32952-32956 are private tags registered to Island Graphics */

"/    #define TIFFTAG_REFPTS                  32953   /* image reference points */

"/    #define TIFFTAG_REGIONTACKPOINT         32954   /* region-xform tack point */

"/    #define TIFFTAG_REGIONWARPCORNERS       32955   /* warp quadrilateral */

"/    #define TIFFTAG_REGIONAFFINE            32956   /* affine transformation mat */

"/    /* tags 32995-32999 are private tags registered to SGI */

"/    #define TIFFTAG_MATTEING                32995   /* $use ExtraSamples */

"/    #define TIFFTAG_DATATYPE                32996   /* $use SampleFormat */

"/    #define TIFFTAG_IMAGEDEPTH              32997   /* z depth of image */

"/    #define TIFFTAG_TILEDEPTH               32998   /* z depth/data tile */

"/    /* tags 33300-33309 are private tags registered to Pixar */

"/    /*

"/     * TIFFTAG_PIXAR_IMAGEFULLWIDTH and TIFFTAG_PIXAR_IMAGEFULLLENGTH

"/     * are set when an image has been cropped out of a larger image.  

"/     * They reflect the size of the original uncropped image.

"/     * The TIFFTAG_XPOSITION and TIFFTAG_YPOSITION can be used

"/     * to determine the position of the smaller image in the larger one.

"/     */

"/    #define TIFFTAG_PIXAR_IMAGEFULLWIDTH    33300   /* full image size in x */

"/    #define TIFFTAG_PIXAR_IMAGEFULLLENGTH   33301   /* full image size in y */

"/     /* Tags 33302-33306 are used to identify special image modes and data

"/      * used by Pixar's texture formats.

"/      */

"/    #define TIFFTAG_PIXAR_TEXTUREFORMAT     33302   /* texture map format */

"/    #define TIFFTAG_PIXAR_WRAPMODES         33303   /* s & t wrap modes */

"/    #define TIFFTAG_PIXAR_FOVCOT            33304   /* cotan(fov) for env. maps */

"/    #define TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN 33305

"/    #define TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA 33306

"/    /* tag 33405 is a private tag registered to Eastman Kodak */

"/    #define TIFFTAG_WRITERSERIALNUMBER      33405   /* device serial number */

"/    #define TIFFTAG_CFAREPEATPATTERNDIM     33421   /* dimensions of CFA pattern */

"/    #define TIFFTAG_CFAPATTERN              33422   /* color filter array pattern */

"/    /* tag 33432 is listed in the 6.0 spec w/ unknown ownership */

"/    #define TIFFTAG_COPYRIGHT               33432   /* copyright string */

"/    /* IPTC TAG from RichTIFF specifications */

"/    #define TIFFTAG_RICHTIFFIPTC            33723

"/    /* 34016-34029 are reserved for ANSI IT8 TIFF/IT <dkelly@apago.com) */

"/    #define TIFFTAG_IT8SITE                 34016   /* site name */

"/    #define TIFFTAG_IT8COLORSEQUENCE        34017   /* color seq. [RGB,CMYK,etc] */

"/    #define TIFFTAG_IT8HEADER               34018   /* DDES Header */

"/    #define TIFFTAG_IT8RASTERPADDING        34019   /* raster scanline padding */

"/    #define TIFFTAG_IT8BITSPERRUNLENGTH     34020   /* # of bits in short run */

"/    #define TIFFTAG_IT8BITSPEREXTENDEDRUNLENGTH 34021/* # of bits in long run */

"/    #define TIFFTAG_IT8COLORTABLE           34022   /* LW colortable */

"/    #define TIFFTAG_IT8IMAGECOLORINDICATOR  34023   /* BP/BL image color switch */

"/    #define TIFFTAG_IT8BKGCOLORINDICATOR    34024   /* BP/BL bg color switch */

"/    #define TIFFTAG_IT8IMAGECOLORVALUE      34025   /* BP/BL image color value */

"/    #define TIFFTAG_IT8BKGCOLORVALUE        34026   /* BP/BL bg color value */

"/    #define TIFFTAG_IT8PIXELINTENSITYRANGE  34027   /* MP pixel intensity value */

"/    #define TIFFTAG_IT8TRANSPARENCYINDICATOR 34028  /* HC transparency switch */

"/    #define TIFFTAG_IT8COLORCHARACTERIZATION 34029  /* color character. table */

"/    #define TIFFTAG_IT8HCUSAGE              34030   /* HC usage indicator */

"/    #define TIFFTAG_IT8TRAPINDICATOR        34031   /* Trapping indicator

"/                                                       (untrapped=0, trapped=1) */

"/    #define TIFFTAG_IT8CMYKEQUIVALENT       34032   /* CMYK color equivalents */

"/    /* tags 34232-34236 are private tags registered to Texas Instruments */

"/    #define TIFFTAG_FRAMECOUNT              34232   /* Sequence Frame Count */

"/    /* tag 34377 is private tag registered to Adobe for PhotoShop */

"/    #define TIFFTAG_PHOTOSHOP               34377 

"/    /* tags 34665, 34853 and 40965 are documented in EXIF specification */

"/    #define TIFFTAG_EXIFIFD                 34665   /* Pointer to EXIF private directory */

"/    /* tag 34750 is a private tag registered to Adobe? */

"/    #define TIFFTAG_ICCPROFILE              34675   /* ICC profile data */

"/    #define TIFFTAG_IMAGELAYER              34732   /* !!TIFF/FX image layer information */

"/    /* tag 34750 is a private tag registered to Pixel Magic */

"/    #define TIFFTAG_JBIGOPTIONS             34750   /* JBIG options */

"/    #define TIFFTAG_GPSIFD                  34853   /* Pointer to GPS private directory */