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<!-- Creator : groff version 1.20.1 --> <!-- CreationDate: Thu May 6 13:48:43 2010 --> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta name="generator" content="groff -Thtml, see www.gnu.org"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta name="Content-Style" content="text/css"> <style type="text/css"> p { margin-top: 0; margin-bottom: 0; vertical-align: top } pre { margin-top: 0; margin-bottom: 0; vertical-align: top } table { margin-top: 0; margin-bottom: 0; vertical-align: top } h1 { text-align: center } </style> <title>TIFFGetField</title> </head> <body> <h1 align="center">TIFFGetField</h1> <a href="#NAME">NAME</a><br> <a href="#SYNOPSIS">SYNOPSIS</a><br> <a href="#DESCRIPTION">DESCRIPTION</a><br> <a href="#AUTOREGISTERED TAGS">AUTOREGISTERED TAGS</a><br> <a href="#RETURN VALUES">RETURN VALUES</a><br> <a href="#DIAGNOSTICS">DIAGNOSTICS</a><br> <a href="#SEE ALSO">SEE ALSO</a><br> <hr> <h2>NAME <a name="NAME"></a> </h2> <p style="margin-left:11%; margin-top: 1em">TIFFGetField, TIFFVGetField − get the value(s) of a tag in an open <small>TIFF</small> file</p> <h2>SYNOPSIS <a name="SYNOPSIS"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><b>#include <tiffio.h></b></p> <p style="margin-left:11%; margin-top: 1em"><b>int TIFFGetField(TIFF *</b><i>tif</i><b>, ttag_t</b> <i>tag</i><b>,</b> <i>...</i><b>)</b></p> <p style="margin-left:11%; margin-top: 1em"><b>#include <stdarg.h></b></p> <p style="margin-left:11%; margin-top: 1em"><b>int TIFFVGetField(TIFF *</b><i>tif</i><b>, ttag_t</b> <i>tag</i><b>, va_list</b> <i>ap</i><b>) <br> int TIFFGetFieldDefaulted(TIFF *</b><i>tif</i><b>, ttag_t</b> <i>tag</i><b>,</b> <i>...</i><b>) <br> int TIFFVGetFieldDefaulted(TIFF *</b><i>tif</i><b>, ttag_t</b> <i>tag</i><b>, va_list</b> <i>ap</i><b>)</b></p> <h2>DESCRIPTION <a name="DESCRIPTION"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><b><i>TIFFGetField</i></b> returns the value of a tag or pseudo-tag associated with the the current directory of the opened <small>TIFF</small> file <i>tif</i>. (A <i>pseudo-tag</i> is a parameter that is used to control the operation of the <small>TIFF</small> library but whose value is not read or written to the underlying file.) The file must have been previously opened with <i>TIFFOpen</i>(3TIFF). The tag is identified by <i>tag</i>, one of the values defined in the include file <b>tiff.h</b> (see also the table below). The type and number of values returned is dependent on the tag being requested. The programming interface uses a variable argument list as prescribed by the <i>stdarg</i>(3) interface. The returned values should only be interpreted if <i>TIFFGetField</i> returns 1.</p> <p style="margin-left:11%; margin-top: 1em"><i>TIFFVGetField</i> is functionally equivalent to <i>TIFFGetField</i> except that it takes a pointer to a variable argument list. <i>TIFFVGetField</i> is useful for layering interfaces on top of the functionality provided by <i>TIFFGetField</i>.</p> <p style="margin-left:11%; margin-top: 1em"><i>TIFFGetFieldDefaulted</i> and <i>TIFFVGetFieldDefaulted</i> are identical to <i>TIFFGetField</i> and <i>TIFFVGetField</i>, except that if a tag is not defined in the current directory and it has a default value, then the default value is returned.</p> <p style="margin-left:11%; margin-top: 1em">The tags understood by <i>libtiff(3TIFF),</i> the number of parameter values, and the types for the returned values are shown below. The data types are specified as in C and correspond to the types used to specify tag values to <i>TIFFSetField</i>(3TIFF). Remember that <i>TIFFGetField</i> returns parameter values, so all the listed data types are pointers to storage where values should be returned. Consult the <small>TIFF</small> specification (or relevant industry specification) for information on the meaning of each tag and their possible values.</p> <table width="100%" border="0" rules="none" frame="void" cellspacing="0" cellpadding="0"> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p><i>Tag Name</i></p></td> <td width="11%"></td> <td width="28%"> <p><i>Count</i></p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p><i>Types</i></p></td> <td width="12%"> <p><i>Notes</i></p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_ARTIST</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_BADFAXLINES</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_BITSPERSAMPLE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_CLEANFAXDATA</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_COLORMAP</p></td> <td width="11%"></td> <td width="28%"> <p>3</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t**</p></td> <td width="12%"> <p>1<<BitsPerSample arrays</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_COMPRESSION</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_CONSECUTIVEBADFAXLINES</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_COPYRIGHT</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_DATATYPE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_DATETIME</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_DOCUMENTNAME</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_DOTRANGE</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_EXTRASAMPLES</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*,uint16_t**</p></td> <td width="12%"> <p>count & types array</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_FAXFILLFUNC</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>TIFFFaxFillFunc*</p></td> <td width="12%"> <p>G3/G4 compression pseudo-tag</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_FAXMODE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>int*</p></td> <td width="12%"> <p>G3/G4 compression pseudo-tag</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_FILLORDER</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_GROUP3OPTIONS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_GROUP4OPTIONS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_HALFTONEHINTS</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_HOSTCOMPUTER</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_ICCPROFILE</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*,void**</p></td> <td width="12%"> <p>count, profile data</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_IMAGEDEPTH</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_IMAGEDESCRIPTION</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_IMAGELENGTH</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_IMAGEWIDTH</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_INKNAMES</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_INKSET</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_JPEGCOLORMODE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>int*</p></td> <td width="12%"> <p>JPEG pseudo-tag</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_JPEGQUALITY</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>int*</p></td> <td width="12%"> <p>JPEG pseudo-tag</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_JPEGTABLES</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*,void**</p></td> <td width="12%"> <p>count & tables</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_JPEGTABLESMODE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>int*</p></td> <td width="12%"> <p>JPEG pseudo-tag</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_MAKE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_MATTEING</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_MAXSAMPLEVALUE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_MINSAMPLEVALUE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_MODEL</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_ORIENTATION</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_PAGENAME</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_PAGENUMBER</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_PHOTOMETRIC</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_PHOTOSHOP</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*,void**</p></td> <td width="12%"> <p>count, data</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_PLANARCONFIG</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_PREDICTOR</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_PRIMARYCHROMATICITIES</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float**</p></td> <td width="12%"> <p>6-entry array</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_REFERENCEBLACKWHITE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float**</p></td> <td width="12%"> <p>6-entry array</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_RESOLUTIONUNIT</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_RICHTIFFIPTC</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*,void**</p></td> <td width="12%"> <p>count, data</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_ROWSPERSTRIP</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_SAMPLEFORMAT</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_SAMPLESPERPIXEL</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_SMAXSAMPLEVALUE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>double*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_SMINSAMPLEVALUE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>double*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_SOFTWARE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_STONITS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>double**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_STRIPBYTECOUNTS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_STRIPOFFSETS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_SUBFILETYPE</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_SUBIFD</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*,uint32_t**</p></td> <td width="12%"> <p>count & offsets array</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_TARGETPRINTER</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>char**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_THRESHHOLDING</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_TILEBYTECOUNTS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_TILEDEPTH</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_TILELENGTH</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_TILEOFFSETS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t**</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_TILEWIDTH</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_TRANSFERFUNCTION</p></td> <td width="11%"></td> <td width="28%"> <p>1 or 3†</p></td> <td width="12%"> <p>uint16_t**1<<BitsPerSample entry arrays</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_WHITEPOINT</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float**</p></td> <td width="12%"> <p>2-entry array</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_XMLPACKET</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint32_t*,void**</p></td> <td width="12%"> <p>count, data</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_XPOSITION</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_XRESOLUTION</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_YCBCRCOEFFICIENTS</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float**</p></td> <td width="12%"> <p>3-entry array</p></td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_YCBCRPOSITIONING</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_YCBCRSUBSAMPLING</p></td> <td width="11%"></td> <td width="28%"> <p>2</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>uint16_t*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_YPOSITION</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float*</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"> <p>TIFFTAG_YRESOLUTION</p></td> <td width="11%"></td> <td width="28%"> <p>1</p></td> <td width="12%"> </td></tr> <tr valign="top" align="left"> <td width="11%"></td> <td width="38%"></td> <td width="11%"></td> <td width="28%"> <p>float*‡</p></td> <td width="12%"> </td></tr> </table> <p style="margin-left:11%;">† If <i>SamplesPerPixel</i> is one, then a single array is returned; otherwise three arrays are returned. <br> ‡ The contents of this field are quite complex. See <i>The ICC Profile Format Specification</i>, Annex B.3 "Embedding ICC Profiles in TIFF Files" (available at http://www.color.org) for an explanation.</p> <h2>AUTOREGISTERED TAGS <a name="AUTOREGISTERED TAGS"></a> </h2> <p style="margin-left:11%; margin-top: 1em">If you can’t find the tag in the table above that means this is unsupported tag. But you still be able to read it’s value if you know the data type of that tag. For example, if you want to read the LONG value from the tag 33424 and ASCII string from the tag 36867 you can use the following code:</p> <p style="margin-left:22%; margin-top: 1em">uint16_t count; <br> void *data;</p> <p style="margin-left:22%; margin-top: 1em">TIFFGetField(tiff, 33424, &count, &data); <br> printf("Tag %d: %d, count %d0, 33424, *(uint32_t *)data, count); <br> TIFFGetField(tiff, 36867, &count, &data); <br> printf("Tag %d: %s, count %d0, 36867, (char *)data, count);</p> <p style="margin-left:11%; margin-top: 1em">is not supported by <b>libtiff(3TIFF),</b> library</p> <h2>RETURN VALUES <a name="RETURN VALUES"></a> </h2> <p style="margin-left:11%; margin-top: 1em">1 is returned if the tag is defined in the current directory; otherwise a 0 is returned.</p> <h2>DIAGNOSTICS <a name="DIAGNOSTICS"></a> </h2> <p style="margin-left:11%; margin-top: 1em">All error messages are directed to the <b>TIFFError</b>(3TIFF) routine.</p> <p style="margin-left:11%; margin-top: 1em"><b>Unknown field, tag 0x%x</b>. An unknown tag was supplied.</p> <h2>SEE ALSO <a name="SEE ALSO"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><b>TIFFOpen</b>(3TIFF), <b>TIFFSetField</b>(3TIFF), <b>TIFFSetDirectory</b>(3TIFF), <b>TIFFReadDirectory</b>(3TIFF), <b>TIFFWriteDirectory</b>(3TIFF) <b>libtiff</b>(3TIFF),</p> <p style="margin-left:11%; margin-top: 1em">Libtiff library home page: <b>http://www.simplesystems.org/libtiff/</b></p> <hr> </body> </html>