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- /*
- Copyright (c) 1988 by Sam Leffler.
- All rights reserved.
-
- Program ported to Turbo C by Craig A. Lindley 12/08/89
-
- This file is provided for unrestricted use provided that this
- legend is included on all tape media and as a part of the
- software program in whole or part. Users may copy, modify or
- distribute this file at will.
- */
-
- #ifndef _TIFF_
- #define _TIFF_
- /*
- Tag Image File Format (TIFF)
- */
-
- #define TIFF_VERSION 42
- #define TIFF_BIGENDIAN 0x4d4d
- #define TIFF_LITTLEENDIAN 0x4949
-
- typedef struct
- {
- unsigned tiff_magic; /* magic number (defines byte order) */
- unsigned 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 tdir_tag; /* see below */
- unsigned 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;
-
- typedef enum
- {
- ABYTE = 1, /* 8-bit unsigned integer */
- ASCII = 2, /* 8-bit bytes w/ last byte null */
- SHORT = 3, /* 16-bit unsigned integer */
- LONG = 4, /* 32-bit unsigned integer */
- RATIONAL = 5, /* 64-bit fractional (numerator+denominator) */
- } TIFFDataType;
-
- /*
- TIFF Tag Definitions. Those marked with a + are obsoleted by revision 5.0
- */
- #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_CCITTRLEW 32771U /* #1 w/ word alignment */
- #define COMPRESSION_PACKBITS 32773U /* Macintosh 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_DEPTH 32768U /* z-depth data */
- #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 scale 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_COLORRESPONSECURVE 301 /* RGB response curve */
- #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 */
- #endif _TIFF_