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<title>TIFFReadEncodedTile</title>
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<h1 align="center">TIFFReadEncodedTile</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#NOTES">NOTES</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">TIFFReadEncodedTile
− read and decode a tile of data from 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
TIFFReadEncodedTile(TIFF *</b><i>tif</i><b>, ttile_t</b>
<i>tile</i><b>, tdata_t</b> <i>buf</i><b>, tsize_t</b>
<i>size</i><b>)</b></p>
<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">Read the
specified tile of data and place up to <i>size</i> bytes of
decompressed information in the (user supplied) data
buffer.</p>
<h2>NOTES
<a name="NOTES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">The value of
<i>tile</i> is a ‘‘raw tile
number.’’ That is, the caller must take into
account whether or not the data are organized in separate
planes (<i>PlanarConfiguration</i>=2).
<i>TIFFComputeTile</i> automatically does this when
converting an (x,y,z,sample) coordinate quadruple to a tile
number. To read a full tile of data the data buffer should
be at least as large as the value returned by
<i>TIFFTileSize</i>.</p>
<p style="margin-left:11%; margin-top: 1em">The library
attempts to hide bit- and byte-ordering differences between
the image and the native machine by converting data to the
native machine order. Bit reversal is done if the
<i>FillOrder</i> tag is opposite to the native machine bit
order. 16- and 32-bit samples are automatically byte-swapped
if the file was written with a byte order opposite to the
native machine byte order,</p>
<h2>RETURN VALUES
<a name="RETURN VALUES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">The actual
number of bytes of data that were placed in <i>buf</i> is
returned; <i>TIFFReadEncodedTile</i> returns −1 if an
error was encountered.</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>
<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>TIFFOpen</b>(3TIFF),
<b>TIFFReadRawTile</b>(3TIFF), <b>TIFFReadTile</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>
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