/*
* TIFF I/O Library Definitions.
*
* Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
* Copyright (c) 1991, 1992 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.
*
* Tag Image File Format (TIFF)
*
* Based on Rev 6.0 from:
* Developer's Desk
* Aldus Corporation
* 411 First Ave. South
* Suite 200
* Seattle, WA 98104
* 206-622-5500
*/
#pragma lib "libtiff.a"
#pragma src "/sys/src/libtiff"
#define TIFF_VERSION 42
typedef struct {
unsigned short tiff_magic; /* magic number (defines byte order) */
unsigned short tiff_version; /* TIFF version number */
unsigned long tiff_diroff; /* byte offset to first directory */
} TIFFHeader;
/*
* TIFF Image File Directories are comprised of
* a table of field descriptors of the form shown
* below. The table is sorted in ascending order
* by tag. The values associated with each entry
* are disjoint and may appear anywhere in the file
* (so long as they are placed on a word boundary).
*
* If the value is 4 bytes or less, then it is placed
* in the offset field to save space. If the value
* is less than 4 bytes, it is left-justified in the
* offset field.
*/
typedef struct {
unsigned short tdir_tag; /* see below */
unsigned short tdir_type; /* data type; see below */
unsigned long tdir_count; /* number of items; length in spec */
unsigned long tdir_offset; /* byte offset to field data */
} TIFFDirEntry;
/*
* NB: In the comments below,
* - items marked with a + are obsoleted by revision 5.0,
* - items marked with a ! are introduced in revision 6.0.
* - items marked with a $ are obsoleted by revision 6.0.
*/
/*
* Tag data type information.
*
* Note: RATIONALs are the ratio of two 32-bit integer values.
*/
typedef enum {
TIFF_NOTYPE = 0, /* placeholder */
TIFF_BYTE = 1, /* 8-bit unsigned integer */
TIFF_ASCII = 2, /* 8-bit bytes w/ last byte null */
TIFF_SHORT = 3, /* 16-bit unsigned integer */
TIFF_LONG = 4, /* 32-bit unsigned integer */
TIFF_RATIONAL = 5, /* 64-bit unsigned fraction */
TIFF_SBYTE = 6, /* !8-bit signed integer */
TIFF_UNDEFINED = 7, /* !8-bit untyped data */
TIFF_SSHORT = 8, /* !16-bit signed integer */
TIFF_SLONG = 9, /* !32-bit signed integer */
TIFF_SRATIONAL = 10, /* !64-bit signed fraction */
TIFF_FLOAT = 11, /* !32-bit IEEE floating point */
TIFF_DOUBLE = 12 /* !64-bit IEEE floating point */
} TIFFDataType;
/*
* TIFF Tag Definitions.
*/
#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_CCITTFAX4 4 /* CCITT Group 4 fax encoding */
#define COMPRESSION_LZW 5 /* Lempel-Ziv & Welch */
#define COMPRESSION_JPEG 6 /* !JPEG 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 */
#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 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 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 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 TIFFTAG_WHITEPOINT 318 /* image white point */
#define TIFFTAG_PRIMARYCHROMATICITIES 319 /* !primary chromaticities */
#define TIFFTAG_COLORMAP 320 /* RGB map for pallette image */
#define TIFFTAG_HALFTONEHINTS 321 /* !highlight+shadow info */
#define TIFFTAG_TILEWIDTH 322 /* !rows/data tile */
#define TIFFTAG_TILELENGTH 323 /* !cols/data tile */
#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_INKSET 332 /* !inks in separated image */
#define INKSET_CMYK 1 /* !cyan-magenta-yellow-black */
#define TIFFTAG_INKNAMES 333 /* !ascii names 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_INT 1 /* !signed integer data */
#define SAMPLEFORMAT_UINT 2 /* !unsigned integer data */
#define SAMPLEFORMAT_IEEEFP 3 /* !IEEE floating point data */
#define SAMPLEFORMAT_VOID 4 /* !untyped data */
#define TIFFTAG_SMINSAMPLEVALUE 340 /* !variable MinSampleValue */
#define TIFFTAG_SMAXSAMPLEVALUE 341 /* !variable MaxSampleValue */
#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 matrice 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 */
/* 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 */
/*
* TIFF is defined as an incomplete type to hide the
* library's internal data structures from clients.
*/
typedef struct tiff TIFF;
/*
* Flags to pass to TIFFPrintDirectory to control
* printing of data structures that are potentially
* very large. Bit-or these flags to enable printing
* multiple items.
*/
#define TIFFPRINT_NONE 0x0 /* no extra info */
#define TIFFPRINT_STRIPS 0x1 /* strips/tiles info */
#define TIFFPRINT_CURVES 0x2 /* color/gray response curves */
#define TIFFPRINT_COLORMAP 0x4 /* colormap */
#define TIFFPRINT_JPEGQTABLES 0x100 /* JPEG Q matrices */
#define TIFFPRINT_JPEGACTABLES 0x200 /* JPEG AC tables */
#define TIFFPRINT_JPEGDCTABLES 0x200 /* JPEG DC tables */
