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  16 <title>TIFFGetField
</title> 
  21 <h1 align=
"center">TIFFGetField
</h1> 
  23 <a href=
"#NAME">NAME
</a><br> 
  24 <a href=
"#SYNOPSIS">SYNOPSIS
</a><br> 
  25 <a href=
"#DESCRIPTION">DESCRIPTION
</a><br> 
  26 <a href=
"#AUTOREGISTERED TAGS">AUTOREGISTERED TAGS
</a><br> 
  27 <a href=
"#RETURN VALUES">RETURN VALUES
</a><br> 
  28 <a href=
"#DIAGNOSTICS">DIAGNOSTICS
</a><br> 
  29 <a href=
"#SEE ALSO">SEE ALSO
</a><br> 
  39 <p style=
"margin-left:11%; margin-top: 1em">TIFFGetField,
 
  40 TIFFVGetField 
− get the value(s) of a tag in an open
 
  41 <small>TIFF
</small> file
</p> 
  44 <a name=
"SYNOPSIS"></a> 
  48 <p style=
"margin-left:11%; margin-top: 1em"><b>#include
 
  49 <tiffio.h
></b></p> 
  51 <p style=
"margin-left:11%; margin-top: 1em"><b>int
 
  52 TIFFGetField(TIFF *
</b><i>tif
</i><b>, ttag_t
</b> 
  53 <i>tag
</i><b>,
</b> <i>...
</i><b>)
</b></p> 
  55 <p style=
"margin-left:11%; margin-top: 1em"><b>#include
 
  56 <stdarg.h
></b></p> 
  58 <p style=
"margin-left:11%; margin-top: 1em"><b>int
 
  59 TIFFVGetField(TIFF *
</b><i>tif
</i><b>, ttag_t
</b> 
  60 <i>tag
</i><b>, va_list
</b> <i>ap
</i><b>) 
<br> 
  61 int TIFFGetFieldDefaulted(TIFF *
</b><i>tif
</i><b>,
 
  62 ttag_t
</b> <i>tag
</i><b>,
</b> <i>...
</i><b>) 
<br> 
  63 int TIFFVGetFieldDefaulted(TIFF *
</b><i>tif
</i><b>,
 
  64 ttag_t
</b> <i>tag
</i><b>, va_list
</b> <i>ap
</i><b>)
</b></p> 
  67 <a name=
"DESCRIPTION"></a> 
  72 <p style=
"margin-left:11%; margin-top: 1em"><b><i>TIFFGetField
</i></b> 
  73 returns the value of a tag or pseudo-tag associated with the
 
  74 the current directory of the opened 
<small>TIFF
</small> file
 
  75 <i>tif
</i>. (A 
<i>pseudo-tag
</i> is a parameter that is used
 
  76 to control the operation of the 
<small>TIFF
</small> library
 
  77 but whose value is not read or written to the underlying
 
  78 file.) The file must have been previously opened with
 
  79 <i>TIFFOpen
</i>(
3TIFF). The tag is identified by 
<i>tag
</i>,
 
  80 one of the values defined in the include file 
<b>tiff.h
</b> 
  81 (see also the table below). The type and number of values
 
  82 returned is dependent on the tag being requested. The
 
  83 programming interface uses a variable argument list as
 
  84 prescribed by the 
<i>stdarg
</i>(
3) interface. The returned
 
  85 values should only be interpreted if 
<i>TIFFGetField
</i> 
  89 <p style=
"margin-left:11%; margin-top: 1em"><i>TIFFVGetField
</i> 
  90 is functionally equivalent to 
<i>TIFFGetField
</i> except
 
  91 that it takes a pointer to a variable argument list.
 
  92 <i>TIFFVGetField
</i> is useful for layering interfaces on
 
  93 top of the functionality provided by
 
  94 <i>TIFFGetField
</i>.
</p> 
  97 <p style=
"margin-left:11%; margin-top: 1em"><i>TIFFGetFieldDefaulted
</i> 
  98 and 
<i>TIFFVGetFieldDefaulted
</i> are identical to
 
  99 <i>TIFFGetField
</i> and 
<i>TIFFVGetField
</i>, except that if
 
 100 a tag is not defined in the current directory and it has a
 
 101 default value, then the default value is returned.
</p> 
 103 <p style=
"margin-left:11%; margin-top: 1em">The tags
 
 104 understood by 
<i>libtiff(
3TIFF),
</i> the number of parameter
 
 105 values, and the types for the returned values are shown
 
 106 below. The data types are specified as in C and correspond
 
 107 to the types used to specify tag values to
 
 108 <i>TIFFSetField
</i>(
3TIFF). Remember that
 
 109 <i>TIFFGetField
</i> returns parameter values, so all the
 
 110 listed data types are pointers to storage where values
 
 111 should be returned. Consult the 
<small>TIFF
</small> 
 112 specification (or relevant industry specification) for
 
 113 information on the meaning of each tag and their possible
 
 116 <table width=
"100%" border=
"0" rules=
"none" frame=
"void" 
 117        cellspacing=
"0" cellpadding=
"0"> 
 118 <tr valign=
"top" align=
"left"> 
 119 <td width=
"11%"></td> 
 123 <p><i>Tag Name
</i></p></td> 
 124 <td width=
"11%"></td> 
 128 <p><i>Count
</i></p></td> 
 131 <tr valign=
"top" align=
"left"> 
 132 <td width=
"11%"></td> 
 133 <td width=
"38%"></td> 
 134 <td width=
"11%"></td> 
 138 <p><i>Types
</i></p></td> 
 142 <p><i>Notes
</i></p></td></tr> 
 143 <tr valign=
"top" align=
"left"> 
 144 <td width=
"11%"></td> 
 148 <p>TIFFTAG_ARTIST
</p></td> 
 149 <td width=
"11%"></td> 
 156 <tr valign=
"top" align=
"left"> 
 157 <td width=
"11%"></td> 
 158 <td width=
"38%"></td> 
 159 <td width=
"11%"></td> 
 166 <tr valign=
"top" align=
"left"> 
 167 <td width=
"11%"></td> 
 171 <p>TIFFTAG_BADFAXLINES
</p></td> 
 172 <td width=
"11%"></td> 
 179 <tr valign=
"top" align=
"left"> 
 180 <td width=
"11%"></td> 
 181 <td width=
"38%"></td> 
 182 <td width=
"11%"></td> 
 189 <tr valign=
"top" align=
"left"> 
 190 <td width=
"11%"></td> 
 194 <p>TIFFTAG_BITSPERSAMPLE
</p></td> 
 195 <td width=
"11%"></td> 
 202 <tr valign=
"top" align=
"left"> 
 203 <td width=
"11%"></td> 
 204 <td width=
"38%"></td> 
 205 <td width=
"11%"></td> 
 212 <tr valign=
"top" align=
"left"> 
 213 <td width=
"11%"></td> 
 217 <p>TIFFTAG_CLEANFAXDATA
</p></td> 
 218 <td width=
"11%"></td> 
 225 <tr valign=
"top" align=
"left"> 
 226 <td width=
"11%"></td> 
 227 <td width=
"38%"></td> 
 228 <td width=
"11%"></td> 
 235 <tr valign=
"top" align=
"left"> 
 236 <td width=
"11%"></td> 
 240 <p>TIFFTAG_COLORMAP
</p></td> 
 241 <td width=
"11%"></td> 
 248 <tr valign=
"top" align=
"left"> 
 249 <td width=
"11%"></td> 
 250 <td width=
"38%"></td> 
 251 <td width=
"11%"></td> 
 259 <p>1<<BitsPerSample arrays
</p></td></tr> 
 260 <tr valign=
"top" align=
"left"> 
 261 <td width=
"11%"></td> 
 265 <p>TIFFTAG_COMPRESSION
</p></td> 
 266 <td width=
"11%"></td> 
 273 <tr valign=
"top" align=
"left"> 
 274 <td width=
"11%"></td> 
 275 <td width=
"38%"></td> 
 276 <td width=
"11%"></td> 
 283 <tr valign=
"top" align=
"left"> 
 284 <td width=
"11%"></td> 
 288 <p>TIFFTAG_CONSECUTIVEBADFAXLINES
</p></td> 
 289 <td width=
"11%"></td> 
 296 <tr valign=
"top" align=
"left"> 
 297 <td width=
"11%"></td> 
 298 <td width=
"38%"></td> 
 299 <td width=
"11%"></td> 
 306 <tr valign=
"top" align=
"left"> 
 307 <td width=
"11%"></td> 
 311 <p>TIFFTAG_COPYRIGHT
</p></td> 
 312 <td width=
"11%"></td> 
 319 <tr valign=
"top" align=
"left"> 
 320 <td width=
"11%"></td> 
 321 <td width=
"38%"></td> 
 322 <td width=
"11%"></td> 
 329 <tr valign=
"top" align=
"left"> 
 330 <td width=
"11%"></td> 
 334 <p>TIFFTAG_DATATYPE
</p></td> 
 335 <td width=
"11%"></td> 
 342 <tr valign=
"top" align=
"left"> 
 343 <td width=
"11%"></td> 
 344 <td width=
"38%"></td> 
 345 <td width=
"11%"></td> 
 352 <tr valign=
"top" align=
"left"> 
 353 <td width=
"11%"></td> 
 357 <p>TIFFTAG_DATETIME
</p></td> 
 358 <td width=
"11%"></td> 
 365 <tr valign=
"top" align=
"left"> 
 366 <td width=
"11%"></td> 
 367 <td width=
"38%"></td> 
 368 <td width=
"11%"></td> 
 375 <tr valign=
"top" align=
"left"> 
 376 <td width=
"11%"></td> 
 380 <p>TIFFTAG_DOCUMENTNAME
</p></td> 
 381 <td width=
"11%"></td> 
 388 <tr valign=
"top" align=
"left"> 
 389 <td width=
"11%"></td> 
 390 <td width=
"38%"></td> 
 391 <td width=
"11%"></td> 
 398 <tr valign=
"top" align=
"left"> 
 399 <td width=
"11%"></td> 
 403 <p>TIFFTAG_DOTRANGE
</p></td> 
 404 <td width=
"11%"></td> 
 411 <tr valign=
"top" align=
"left"> 
 412 <td width=
"11%"></td> 
 413 <td width=
"38%"></td> 
 414 <td width=
"11%"></td> 
 421 <tr valign=
"top" align=
"left"> 
 422 <td width=
"11%"></td> 
 426 <p>TIFFTAG_EXTRASAMPLES
</p></td> 
 427 <td width=
"11%"></td> 
 434 <tr valign=
"top" align=
"left"> 
 435 <td width=
"11%"></td> 
 436 <td width=
"38%"></td> 
 437 <td width=
"11%"></td> 
 441 <p>uint16*,uint16**
</p></td> 
 445 <p>count 
& types array
</p></td></tr> 
 446 <tr valign=
"top" align=
"left"> 
 447 <td width=
"11%"></td> 
 451 <p>TIFFTAG_FAXFILLFUNC
</p></td> 
 452 <td width=
"11%"></td> 
 459 <tr valign=
"top" align=
"left"> 
 460 <td width=
"11%"></td> 
 461 <td width=
"38%"></td> 
 462 <td width=
"11%"></td> 
 466 <p>TIFFFaxFillFunc*
</p></td> 
 470 <p>G3/G4 compression pseudo-tag
</p></td></tr> 
 471 <tr valign=
"top" align=
"left"> 
 472 <td width=
"11%"></td> 
 476 <p>TIFFTAG_FAXMODE
</p></td> 
 477 <td width=
"11%"></td> 
 484 <tr valign=
"top" align=
"left"> 
 485 <td width=
"11%"></td> 
 486 <td width=
"38%"></td> 
 487 <td width=
"11%"></td> 
 495 <p>G3/G4 compression pseudo-tag
</p></td></tr> 
 496 <tr valign=
"top" align=
"left"> 
 497 <td width=
"11%"></td> 
 501 <p>TIFFTAG_FILLORDER
</p></td> 
 502 <td width=
"11%"></td> 
 509 <tr valign=
"top" align=
"left"> 
 510 <td width=
"11%"></td> 
 511 <td width=
"38%"></td> 
 512 <td width=
"11%"></td> 
 519 <tr valign=
"top" align=
"left"> 
 520 <td width=
"11%"></td> 
 524 <p>TIFFTAG_GROUP3OPTIONS
</p></td> 
 525 <td width=
"11%"></td> 
 532 <tr valign=
"top" align=
"left"> 
 533 <td width=
"11%"></td> 
 534 <td width=
"38%"></td> 
 535 <td width=
"11%"></td> 
 542 <tr valign=
"top" align=
"left"> 
 543 <td width=
"11%"></td> 
 547 <p>TIFFTAG_GROUP4OPTIONS
</p></td> 
 548 <td width=
"11%"></td> 
 555 <tr valign=
"top" align=
"left"> 
 556 <td width=
"11%"></td> 
 557 <td width=
"38%"></td> 
 558 <td width=
"11%"></td> 
 565 <tr valign=
"top" align=
"left"> 
 566 <td width=
"11%"></td> 
 570 <p>TIFFTAG_HALFTONEHINTS
</p></td> 
 571 <td width=
"11%"></td> 
 578 <tr valign=
"top" align=
"left"> 
 579 <td width=
"11%"></td> 
 580 <td width=
"38%"></td> 
 581 <td width=
"11%"></td> 
 588 <tr valign=
"top" align=
"left"> 
 589 <td width=
"11%"></td> 
 593 <p>TIFFTAG_HOSTCOMPUTER
</p></td> 
 594 <td width=
"11%"></td> 
 601 <tr valign=
"top" align=
"left"> 
 602 <td width=
"11%"></td> 
 603 <td width=
"38%"></td> 
 604 <td width=
"11%"></td> 
 611 <tr valign=
"top" align=
"left"> 
 612 <td width=
"11%"></td> 
 616 <p>TIFFTAG_ICCPROFILE
</p></td> 
 617 <td width=
"11%"></td> 
 624 <tr valign=
"top" align=
"left"> 
 625 <td width=
"11%"></td> 
 626 <td width=
"38%"></td> 
 627 <td width=
"11%"></td> 
 631 <p>uint32*,void**
</p></td> 
 635 <p>count, profile data
</p></td></tr> 
 636 <tr valign=
"top" align=
"left"> 
 637 <td width=
"11%"></td> 
 641 <p>TIFFTAG_IMAGEDEPTH
</p></td> 
 642 <td width=
"11%"></td> 
 649 <tr valign=
"top" align=
"left"> 
 650 <td width=
"11%"></td> 
 651 <td width=
"38%"></td> 
 652 <td width=
"11%"></td> 
 659 <tr valign=
"top" align=
"left"> 
 660 <td width=
"11%"></td> 
 664 <p>TIFFTAG_IMAGEDESCRIPTION
</p></td> 
 665 <td width=
"11%"></td> 
 672 <tr valign=
"top" align=
"left"> 
 673 <td width=
"11%"></td> 
 674 <td width=
"38%"></td> 
 675 <td width=
"11%"></td> 
 682 <tr valign=
"top" align=
"left"> 
 683 <td width=
"11%"></td> 
 687 <p>TIFFTAG_IMAGELENGTH
</p></td> 
 688 <td width=
"11%"></td> 
 695 <tr valign=
"top" align=
"left"> 
 696 <td width=
"11%"></td> 
 697 <td width=
"38%"></td> 
 698 <td width=
"11%"></td> 
 705 <tr valign=
"top" align=
"left"> 
 706 <td width=
"11%"></td> 
 710 <p>TIFFTAG_IMAGEWIDTH
</p></td> 
 711 <td width=
"11%"></td> 
 718 <tr valign=
"top" align=
"left"> 
 719 <td width=
"11%"></td> 
 720 <td width=
"38%"></td> 
 721 <td width=
"11%"></td> 
 728 <tr valign=
"top" align=
"left"> 
 729 <td width=
"11%"></td> 
 733 <p>TIFFTAG_INKNAMES
</p></td> 
 734 <td width=
"11%"></td> 
 741 <tr valign=
"top" align=
"left"> 
 742 <td width=
"11%"></td> 
 743 <td width=
"38%"></td> 
 744 <td width=
"11%"></td> 
 751 <tr valign=
"top" align=
"left"> 
 752 <td width=
"11%"></td> 
 756 <p>TIFFTAG_INKSET
</p></td> 
 757 <td width=
"11%"></td> 
 764 <tr valign=
"top" align=
"left"> 
 765 <td width=
"11%"></td> 
 766 <td width=
"38%"></td> 
 767 <td width=
"11%"></td> 
 774 <tr valign=
"top" align=
"left"> 
 775 <td width=
"11%"></td> 
 779 <p>TIFFTAG_JPEGCOLORMODE
</p></td> 
 780 <td width=
"11%"></td> 
 787 <tr valign=
"top" align=
"left"> 
 788 <td width=
"11%"></td> 
 789 <td width=
"38%"></td> 
 790 <td width=
"11%"></td> 
 798 <p>JPEG pseudo-tag
</p></td></tr> 
 799 <tr valign=
"top" align=
"left"> 
 800 <td width=
"11%"></td> 
 804 <p>TIFFTAG_JPEGQUALITY
</p></td> 
 805 <td width=
"11%"></td> 
 812 <tr valign=
"top" align=
"left"> 
 813 <td width=
"11%"></td> 
 814 <td width=
"38%"></td> 
 815 <td width=
"11%"></td> 
 823 <p>JPEG pseudo-tag
</p></td></tr> 
 824 <tr valign=
"top" align=
"left"> 
 825 <td width=
"11%"></td> 
 829 <p>TIFFTAG_JPEGTABLES
</p></td> 
 830 <td width=
"11%"></td> 
 837 <tr valign=
"top" align=
"left"> 
 838 <td width=
"11%"></td> 
 839 <td width=
"38%"></td> 
 840 <td width=
"11%"></td> 
 844 <p>uint32*,void**
</p></td> 
 848 <p>count 
& tables
</p></td></tr> 
 849 <tr valign=
"top" align=
"left"> 
 850 <td width=
"11%"></td> 
 854 <p>TIFFTAG_JPEGTABLESMODE
</p></td> 
 855 <td width=
"11%"></td> 
 862 <tr valign=
"top" align=
"left"> 
 863 <td width=
"11%"></td> 
 864 <td width=
"38%"></td> 
 865 <td width=
"11%"></td> 
 873 <p>JPEG pseudo-tag
</p></td></tr> 
 874 <tr valign=
"top" align=
"left"> 
 875 <td width=
"11%"></td> 
 879 <p>TIFFTAG_MAKE
</p></td> 
 880 <td width=
"11%"></td> 
 887 <tr valign=
"top" align=
"left"> 
 888 <td width=
"11%"></td> 
 889 <td width=
"38%"></td> 
 890 <td width=
"11%"></td> 
 897 <tr valign=
"top" align=
"left"> 
 898 <td width=
"11%"></td> 
 902 <p>TIFFTAG_MATTEING
</p></td> 
 903 <td width=
"11%"></td> 
 910 <tr valign=
"top" align=
"left"> 
 911 <td width=
"11%"></td> 
 912 <td width=
"38%"></td> 
 913 <td width=
"11%"></td> 
 920 <tr valign=
"top" align=
"left"> 
 921 <td width=
"11%"></td> 
 925 <p>TIFFTAG_MAXSAMPLEVALUE
</p></td> 
 926 <td width=
"11%"></td> 
 933 <tr valign=
"top" align=
"left"> 
 934 <td width=
"11%"></td> 
 935 <td width=
"38%"></td> 
 936 <td width=
"11%"></td> 
 943 <tr valign=
"top" align=
"left"> 
 944 <td width=
"11%"></td> 
 948 <p>TIFFTAG_MINSAMPLEVALUE
</p></td> 
 949 <td width=
"11%"></td> 
 956 <tr valign=
"top" align=
"left"> 
 957 <td width=
"11%"></td> 
 958 <td width=
"38%"></td> 
 959 <td width=
"11%"></td> 
 966 <tr valign=
"top" align=
"left"> 
 967 <td width=
"11%"></td> 
 971 <p>TIFFTAG_MODEL
</p></td> 
 972 <td width=
"11%"></td> 
 979 <tr valign=
"top" align=
"left"> 
 980 <td width=
"11%"></td> 
 981 <td width=
"38%"></td> 
 982 <td width=
"11%"></td> 
 989 <tr valign=
"top" align=
"left"> 
 990 <td width=
"11%"></td> 
 994 <p>TIFFTAG_ORIENTATION
</p></td> 
 995 <td width=
"11%"></td> 
1002 <tr valign=
"top" align=
"left"> 
1003 <td width=
"11%"></td> 
1004 <td width=
"38%"></td> 
1005 <td width=
"11%"></td> 
1012 <tr valign=
"top" align=
"left"> 
1013 <td width=
"11%"></td> 
1017 <p>TIFFTAG_PAGENAME
</p></td> 
1018 <td width=
"11%"></td> 
1025 <tr valign=
"top" align=
"left"> 
1026 <td width=
"11%"></td> 
1027 <td width=
"38%"></td> 
1028 <td width=
"11%"></td> 
1035 <tr valign=
"top" align=
"left"> 
1036 <td width=
"11%"></td> 
1040 <p>TIFFTAG_PAGENUMBER
</p></td> 
1041 <td width=
"11%"></td> 
1048 <tr valign=
"top" align=
"left"> 
1049 <td width=
"11%"></td> 
1050 <td width=
"38%"></td> 
1051 <td width=
"11%"></td> 
1058 <tr valign=
"top" align=
"left"> 
1059 <td width=
"11%"></td> 
1063 <p>TIFFTAG_PHOTOMETRIC
</p></td> 
1064 <td width=
"11%"></td> 
1071 <tr valign=
"top" align=
"left"> 
1072 <td width=
"11%"></td> 
1073 <td width=
"38%"></td> 
1074 <td width=
"11%"></td> 
1081 <tr valign=
"top" align=
"left"> 
1082 <td width=
"11%"></td> 
1086 <p>TIFFTAG_PHOTOSHOP
</p></td> 
1087 <td width=
"11%"></td> 
1094 <tr valign=
"top" align=
"left"> 
1095 <td width=
"11%"></td> 
1096 <td width=
"38%"></td> 
1097 <td width=
"11%"></td> 
1101 <p>uint32*,void**
</p></td> 
1105 <p>count, data
</p></td></tr> 
1106 <tr valign=
"top" align=
"left"> 
1107 <td width=
"11%"></td> 
1111 <p>TIFFTAG_PLANARCONFIG
</p></td> 
1112 <td width=
"11%"></td> 
1119 <tr valign=
"top" align=
"left"> 
1120 <td width=
"11%"></td> 
1121 <td width=
"38%"></td> 
1122 <td width=
"11%"></td> 
1129 <tr valign=
"top" align=
"left"> 
1130 <td width=
"11%"></td> 
1134 <p>TIFFTAG_PREDICTOR
</p></td> 
1135 <td width=
"11%"></td> 
1142 <tr valign=
"top" align=
"left"> 
1143 <td width=
"11%"></td> 
1144 <td width=
"38%"></td> 
1145 <td width=
"11%"></td> 
1152 <tr valign=
"top" align=
"left"> 
1153 <td width=
"11%"></td> 
1157 <p>TIFFTAG_PRIMARYCHROMATICITIES
</p></td> 
1158 <td width=
"11%"></td> 
1165 <tr valign=
"top" align=
"left"> 
1166 <td width=
"11%"></td> 
1167 <td width=
"38%"></td> 
1168 <td width=
"11%"></td> 
1176 <p>6-entry array
</p></td></tr> 
1177 <tr valign=
"top" align=
"left"> 
1178 <td width=
"11%"></td> 
1182 <p>TIFFTAG_REFERENCEBLACKWHITE
</p></td> 
1183 <td width=
"11%"></td> 
1190 <tr valign=
"top" align=
"left"> 
1191 <td width=
"11%"></td> 
1192 <td width=
"38%"></td> 
1193 <td width=
"11%"></td> 
1201 <p>6-entry array
</p></td></tr> 
1202 <tr valign=
"top" align=
"left"> 
1203 <td width=
"11%"></td> 
1207 <p>TIFFTAG_RESOLUTIONUNIT
</p></td> 
1208 <td width=
"11%"></td> 
1215 <tr valign=
"top" align=
"left"> 
1216 <td width=
"11%"></td> 
1217 <td width=
"38%"></td> 
1218 <td width=
"11%"></td> 
1225 <tr valign=
"top" align=
"left"> 
1226 <td width=
"11%"></td> 
1230 <p>TIFFTAG_RICHTIFFIPTC
</p></td> 
1231 <td width=
"11%"></td> 
1238 <tr valign=
"top" align=
"left"> 
1239 <td width=
"11%"></td> 
1240 <td width=
"38%"></td> 
1241 <td width=
"11%"></td> 
1245 <p>uint32*,void**
</p></td> 
1249 <p>count, data
</p></td></tr> 
1250 <tr valign=
"top" align=
"left"> 
1251 <td width=
"11%"></td> 
1255 <p>TIFFTAG_ROWSPERSTRIP
</p></td> 
1256 <td width=
"11%"></td> 
1263 <tr valign=
"top" align=
"left"> 
1264 <td width=
"11%"></td> 
1265 <td width=
"38%"></td> 
1266 <td width=
"11%"></td> 
1273 <tr valign=
"top" align=
"left"> 
1274 <td width=
"11%"></td> 
1278 <p>TIFFTAG_SAMPLEFORMAT
</p></td> 
1279 <td width=
"11%"></td> 
1286 <tr valign=
"top" align=
"left"> 
1287 <td width=
"11%"></td> 
1288 <td width=
"38%"></td> 
1289 <td width=
"11%"></td> 
1296 <tr valign=
"top" align=
"left"> 
1297 <td width=
"11%"></td> 
1301 <p>TIFFTAG_SAMPLESPERPIXEL
</p></td> 
1302 <td width=
"11%"></td> 
1309 <tr valign=
"top" align=
"left"> 
1310 <td width=
"11%"></td> 
1311 <td width=
"38%"></td> 
1312 <td width=
"11%"></td> 
1319 <tr valign=
"top" align=
"left"> 
1320 <td width=
"11%"></td> 
1324 <p>TIFFTAG_SMAXSAMPLEVALUE
</p></td> 
1325 <td width=
"11%"></td> 
1332 <tr valign=
"top" align=
"left"> 
1333 <td width=
"11%"></td> 
1334 <td width=
"38%"></td> 
1335 <td width=
"11%"></td> 
1342 <tr valign=
"top" align=
"left"> 
1343 <td width=
"11%"></td> 
1347 <p>TIFFTAG_SMINSAMPLEVALUE
</p></td> 
1348 <td width=
"11%"></td> 
1355 <tr valign=
"top" align=
"left"> 
1356 <td width=
"11%"></td> 
1357 <td width=
"38%"></td> 
1358 <td width=
"11%"></td> 
1365 <tr valign=
"top" align=
"left"> 
1366 <td width=
"11%"></td> 
1370 <p>TIFFTAG_SOFTWARE
</p></td> 
1371 <td width=
"11%"></td> 
1378 <tr valign=
"top" align=
"left"> 
1379 <td width=
"11%"></td> 
1380 <td width=
"38%"></td> 
1381 <td width=
"11%"></td> 
1388 <tr valign=
"top" align=
"left"> 
1389 <td width=
"11%"></td> 
1393 <p>TIFFTAG_STONITS
</p></td> 
1394 <td width=
"11%"></td> 
1401 <tr valign=
"top" align=
"left"> 
1402 <td width=
"11%"></td> 
1403 <td width=
"38%"></td> 
1404 <td width=
"11%"></td> 
1408 <p>double**
</p></td> 
1411 <tr valign=
"top" align=
"left"> 
1412 <td width=
"11%"></td> 
1416 <p>TIFFTAG_STRIPBYTECOUNTS
</p></td> 
1417 <td width=
"11%"></td> 
1424 <tr valign=
"top" align=
"left"> 
1425 <td width=
"11%"></td> 
1426 <td width=
"38%"></td> 
1427 <td width=
"11%"></td> 
1431 <p>uint32**
</p></td> 
1434 <tr valign=
"top" align=
"left"> 
1435 <td width=
"11%"></td> 
1439 <p>TIFFTAG_STRIPOFFSETS
</p></td> 
1440 <td width=
"11%"></td> 
1447 <tr valign=
"top" align=
"left"> 
1448 <td width=
"11%"></td> 
1449 <td width=
"38%"></td> 
1450 <td width=
"11%"></td> 
1454 <p>uint32**
</p></td> 
1457 <tr valign=
"top" align=
"left"> 
1458 <td width=
"11%"></td> 
1462 <p>TIFFTAG_SUBFILETYPE
</p></td> 
1463 <td width=
"11%"></td> 
1470 <tr valign=
"top" align=
"left"> 
1471 <td width=
"11%"></td> 
1472 <td width=
"38%"></td> 
1473 <td width=
"11%"></td> 
1480 <tr valign=
"top" align=
"left"> 
1481 <td width=
"11%"></td> 
1485 <p>TIFFTAG_SUBIFD
</p></td> 
1486 <td width=
"11%"></td> 
1493 <tr valign=
"top" align=
"left"> 
1494 <td width=
"11%"></td> 
1495 <td width=
"38%"></td> 
1496 <td width=
"11%"></td> 
1500 <p>uint16*,uint32**
</p></td> 
1504 <p>count 
& offsets array
</p></td></tr> 
1505 <tr valign=
"top" align=
"left"> 
1506 <td width=
"11%"></td> 
1510 <p>TIFFTAG_TARGETPRINTER
</p></td> 
1511 <td width=
"11%"></td> 
1518 <tr valign=
"top" align=
"left"> 
1519 <td width=
"11%"></td> 
1520 <td width=
"38%"></td> 
1521 <td width=
"11%"></td> 
1528 <tr valign=
"top" align=
"left"> 
1529 <td width=
"11%"></td> 
1533 <p>TIFFTAG_THRESHHOLDING
</p></td> 
1534 <td width=
"11%"></td> 
1541 <tr valign=
"top" align=
"left"> 
1542 <td width=
"11%"></td> 
1543 <td width=
"38%"></td> 
1544 <td width=
"11%"></td> 
1551 <tr valign=
"top" align=
"left"> 
1552 <td width=
"11%"></td> 
1556 <p>TIFFTAG_TILEBYTECOUNTS
</p></td> 
1557 <td width=
"11%"></td> 
1564 <tr valign=
"top" align=
"left"> 
1565 <td width=
"11%"></td> 
1566 <td width=
"38%"></td> 
1567 <td width=
"11%"></td> 
1571 <p>uint32**
</p></td> 
1574 <tr valign=
"top" align=
"left"> 
1575 <td width=
"11%"></td> 
1579 <p>TIFFTAG_TILEDEPTH
</p></td> 
1580 <td width=
"11%"></td> 
1587 <tr valign=
"top" align=
"left"> 
1588 <td width=
"11%"></td> 
1589 <td width=
"38%"></td> 
1590 <td width=
"11%"></td> 
1597 <tr valign=
"top" align=
"left"> 
1598 <td width=
"11%"></td> 
1602 <p>TIFFTAG_TILELENGTH
</p></td> 
1603 <td width=
"11%"></td> 
1610 <tr valign=
"top" align=
"left"> 
1611 <td width=
"11%"></td> 
1612 <td width=
"38%"></td> 
1613 <td width=
"11%"></td> 
1620 <tr valign=
"top" align=
"left"> 
1621 <td width=
"11%"></td> 
1625 <p>TIFFTAG_TILEOFFSETS
</p></td> 
1626 <td width=
"11%"></td> 
1633 <tr valign=
"top" align=
"left"> 
1634 <td width=
"11%"></td> 
1635 <td width=
"38%"></td> 
1636 <td width=
"11%"></td> 
1640 <p>uint32**
</p></td> 
1643 <tr valign=
"top" align=
"left"> 
1644 <td width=
"11%"></td> 
1648 <p>TIFFTAG_TILEWIDTH
</p></td> 
1649 <td width=
"11%"></td> 
1656 <tr valign=
"top" align=
"left"> 
1657 <td width=
"11%"></td> 
1658 <td width=
"38%"></td> 
1659 <td width=
"11%"></td> 
1666 <tr valign=
"top" align=
"left"> 
1667 <td width=
"11%"></td> 
1671 <p>TIFFTAG_TRANSFERFUNCTION
</p></td> 
1672 <td width=
"11%"></td> 
1676 <p>1 or 
3†</p></td> 
1680 <p>uint16**
1<<BitsPerSample entry arrays
</p></td></tr> 
1681 <tr valign=
"top" align=
"left"> 
1682 <td width=
"11%"></td> 
1686 <p>TIFFTAG_WHITEPOINT
</p></td> 
1687 <td width=
"11%"></td> 
1694 <tr valign=
"top" align=
"left"> 
1695 <td width=
"11%"></td> 
1696 <td width=
"38%"></td> 
1697 <td width=
"11%"></td> 
1705 <p>2-entry array
</p></td></tr> 
1706 <tr valign=
"top" align=
"left"> 
1707 <td width=
"11%"></td> 
1711 <p>TIFFTAG_XMLPACKET
</p></td> 
1712 <td width=
"11%"></td> 
1719 <tr valign=
"top" align=
"left"> 
1720 <td width=
"11%"></td> 
1721 <td width=
"38%"></td> 
1722 <td width=
"11%"></td> 
1726 <p>uint32*,void**
</p></td> 
1730 <p>count, data
</p></td></tr> 
1731 <tr valign=
"top" align=
"left"> 
1732 <td width=
"11%"></td> 
1736 <p>TIFFTAG_XPOSITION
</p></td> 
1737 <td width=
"11%"></td> 
1744 <tr valign=
"top" align=
"left"> 
1745 <td width=
"11%"></td> 
1746 <td width=
"38%"></td> 
1747 <td width=
"11%"></td> 
1754 <tr valign=
"top" align=
"left"> 
1755 <td width=
"11%"></td> 
1759 <p>TIFFTAG_XRESOLUTION
</p></td> 
1760 <td width=
"11%"></td> 
1767 <tr valign=
"top" align=
"left"> 
1768 <td width=
"11%"></td> 
1769 <td width=
"38%"></td> 
1770 <td width=
"11%"></td> 
1777 <tr valign=
"top" align=
"left"> 
1778 <td width=
"11%"></td> 
1782 <p>TIFFTAG_YCBCRCOEFFICIENTS
</p></td> 
1783 <td width=
"11%"></td> 
1790 <tr valign=
"top" align=
"left"> 
1791 <td width=
"11%"></td> 
1792 <td width=
"38%"></td> 
1793 <td width=
"11%"></td> 
1801 <p>3-entry array
</p></td></tr> 
1802 <tr valign=
"top" align=
"left"> 
1803 <td width=
"11%"></td> 
1807 <p>TIFFTAG_YCBCRPOSITIONING
</p></td> 
1808 <td width=
"11%"></td> 
1815 <tr valign=
"top" align=
"left"> 
1816 <td width=
"11%"></td> 
1817 <td width=
"38%"></td> 
1818 <td width=
"11%"></td> 
1825 <tr valign=
"top" align=
"left"> 
1826 <td width=
"11%"></td> 
1830 <p>TIFFTAG_YCBCRSUBSAMPLING
</p></td> 
1831 <td width=
"11%"></td> 
1838 <tr valign=
"top" align=
"left"> 
1839 <td width=
"11%"></td> 
1840 <td width=
"38%"></td> 
1841 <td width=
"11%"></td> 
1848 <tr valign=
"top" align=
"left"> 
1849 <td width=
"11%"></td> 
1853 <p>TIFFTAG_YPOSITION
</p></td> 
1854 <td width=
"11%"></td> 
1861 <tr valign=
"top" align=
"left"> 
1862 <td width=
"11%"></td> 
1863 <td width=
"38%"></td> 
1864 <td width=
"11%"></td> 
1871 <tr valign=
"top" align=
"left"> 
1872 <td width=
"11%"></td> 
1876 <p>TIFFTAG_YRESOLUTION
</p></td> 
1877 <td width=
"11%"></td> 
1884 <tr valign=
"top" align=
"left"> 
1885 <td width=
"11%"></td> 
1886 <td width=
"38%"></td> 
1887 <td width=
"11%"></td> 
1891 <p>float*
‡</p></td> 
1896 <p style=
"margin-left:11%;">† If
 
1897 <i>SamplesPerPixel
</i> is one, then a single array is
 
1898 returned; otherwise three arrays are returned. 
<br> 
1899 ‡ The contents of this field are quite complex. See
 
1900 <i>The ICC Profile Format Specification
</i>, Annex B
.3 
1901 "Embedding ICC Profiles in TIFF Files
" (available
 
1902 at http://www.color.org) for an explanation.
</p> 
1904 <h2>AUTOREGISTERED TAGS
 
1905 <a name=
"AUTOREGISTERED TAGS"></a> 
1909 <p style=
"margin-left:11%; margin-top: 1em">If you
 
1910 can
’t find the tag in the table above that means this
 
1911 is unsupported tag. But you still be able to read it
’s
 
1912 value if you know the data type of that tag. For example, if
 
1913 you want to read the LONG value from the tag 
33424 and ASCII
 
1914 string from the tag 
36867 you can use the following
 
1917 <p style=
"margin-left:22%; margin-top: 1em">uint16 count;
 
1922 <p style=
"margin-left:22%; margin-top: 1em">TIFFGetField(tiff,
 
1923 33424, 
&count, 
&data); 
<br> 
1924 printf(
"Tag %d: %d, count %d0, 
33424, *(uint32 *)data,
 
1926 TIFFGetField(tiff, 
36867, 
&count, 
&data); 
<br> 
1927 printf(
"Tag %d: %s, count %d0, 
36867, (char *)data,
 
1930 <p style=
"margin-left:11%; margin-top: 1em">is not
 
1931 supported by 
<b>libtiff(
3TIFF),
</b> library
</p> 
1934 <a name=
"RETURN VALUES"></a> 
1938 <p style=
"margin-left:11%; margin-top: 1em">1 is returned
 
1939 if the tag is defined in the current directory; otherwise a
 
1943 <a name=
"DIAGNOSTICS"></a> 
1947 <p style=
"margin-left:11%; margin-top: 1em">All error
 
1948 messages are directed to the 
<b>TIFFError
</b>(
3TIFF)
 
1951 <p style=
"margin-left:11%; margin-top: 1em"><b>Unknown
 
1952 field, tag 
0x%x
</b>. An unknown tag was supplied.
</p> 
1955 <a name=
"SEE ALSO"></a> 
1960 <p style=
"margin-left:11%; margin-top: 1em"><b>TIFFOpen
</b>(
3TIFF),
 
1961 <b>TIFFSetField
</b>(
3TIFF), 
<b>TIFFSetDirectory
</b>(
3TIFF),
 
1962 <b>TIFFReadDirectory
</b>(
3TIFF),
 
1963 <b>TIFFWriteDirectory
</b>(
3TIFF) 
<b>libtiff
</b>(
3TIFF),
</p> 
1965 <p style=
"margin-left:11%; margin-top: 1em">Libtiff library
 
1966 home page: 
<b>http://www.remotesensing.org/libtiff/
</b></p>