| 1 | <!-- Creator : groff version 1.18.1 -->
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| 2 | <!-- CreationDate: Fri Jul 13 17:43:16 2007 -->
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| 3 | <html>
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| 4 | <head>
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| 5 | <meta name="generator" content="groff -Thtml, see www.gnu.org">
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| 6 | <meta name="Content-Style" content="text/css">
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| 7 | <title>TIFFReadEncodedTile</title>
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| 8 | </head>
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| 9 | <body>
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| 10 |
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| 11 | <h1 align=center>TIFFReadEncodedTile</h1>
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| 12 | <a href="#NAME">NAME</a><br>
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| 13 | <a href="#SYNOPSIS">SYNOPSIS</a><br>
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| 14 | <a href="#DESCRIPTION">DESCRIPTION</a><br>
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| 15 | <a href="#NOTES">NOTES</a><br>
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| 16 | <a href="#RETURN VALUES">RETURN VALUES</a><br>
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| 17 | <a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
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| 18 | <a href="#SEE ALSO">SEE ALSO</a><br>
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| 19 |
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| 20 | <hr>
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| 21 | <a name="NAME"></a>
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| 22 | <h2>NAME</h2>
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| 23 | <!-- INDENTATION -->
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| 25 | cols="2" cellspacing="0" cellpadding="0">
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| 26 | <tr valign="top" align="left">
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| 27 | <td width="8%"></td>
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| 28 | <td width="91%">
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| 29 | <p>TIFFReadEncodedTile − read and decode a tile of
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| 30 | data from an open <small>TIFF</small> file</p>
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| 31 | </td>
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| 32 | </table>
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| 33 | <a name="SYNOPSIS"></a>
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| 34 | <h2>SYNOPSIS</h2>
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| 35 | <!-- INDENTATION -->
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| 39 | <td width="8%"></td>
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| 40 | <td width="91%">
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| 41 | <p><b>#include <tiffio.h></b></p>
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| 42 | <!-- INDENTATION -->
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| 43 | <p><b>int TIFFReadEncodedTile(TIFF *</b><i>tif</i><b>,
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| 44 | ttile_t</b> <i>tile</i><b>, tdata_t</b> <i>buf</i><b>,
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| 45 | tsize_t</b> <i>size</i><b>)</b></p>
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| 46 | </td>
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| 47 | </table>
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| 48 | <a name="DESCRIPTION"></a>
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| 49 | <h2>DESCRIPTION</h2>
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| 50 | <!-- INDENTATION -->
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| 54 | <td width="8%"></td>
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| 55 | <td width="91%">
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| 56 | <p>Read the specified tile of data and place up to
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| 57 | <i>size</i> bytes of decompressed information in the (user
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| 58 | supplied) data buffer.</p>
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| 59 | </td>
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| 60 | </table>
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| 61 | <a name="NOTES"></a>
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| 62 | <h2>NOTES</h2>
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| 63 | <!-- INDENTATION -->
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| 67 | <td width="8%"></td>
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| 68 | <td width="91%">
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| 69 | <p>The value of <i>tile</i> is a ‘‘raw tile
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| 70 | number.’’ That is, the caller must take into
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| 71 | account whether or not the data are organized in separate
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| 72 | planes (<i>PlanarConfiguration</i>=2).
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| 73 | <i>TIFFComputeTile</i> automatically does this when
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| 74 | converting an (x,y,z,sample) coordinate quadruple to a tile
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| 75 | number. To read a full tile of data the data buffer should
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| 76 | be at least as large as the value returned by
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| 77 | <i>TIFFTileSize</i>.</p>
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| 78 | <!-- INDENTATION -->
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| 79 | <p>The library attempts to hide bit- and byte-ordering
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| 80 | differences between the image and the native machine by
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| 81 | converting data to the native machine order. Bit reversal is
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| 82 | done if the <i>FillOrder</i> tag is opposite to the native
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| 83 | machine bit order. 16- and 32-bit samples are automatically
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| 84 | byte-swapped if the file was written with a byte order
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| 85 | opposite to the native machine byte order,</p>
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| 86 | </td>
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| 87 | </table>
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| 88 | <a name="RETURN VALUES"></a>
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| 89 | <h2>RETURN VALUES</h2>
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| 90 | <!-- INDENTATION -->
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| 94 | <td width="8%"></td>
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| 95 | <td width="91%">
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| 96 | <p>The actual number of bytes of data that were placed in
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| 97 | <i>buf</i> is returned; <i>TIFFReadEncodedTile</i> returns
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| 98 | −1 if an error was encountered.</p>
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| 99 | </td>
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| 100 | </table>
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| 101 | <a name="DIAGNOSTICS"></a>
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| 102 | <h2>DIAGNOSTICS</h2>
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| 103 | <!-- INDENTATION -->
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| 107 | <td width="8%"></td>
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| 108 | <td width="91%">
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| 109 | <p>All error messages are directed to the
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| 110 | <b>TIFFError</b>(3TIFF) routine.</p>
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| 111 | </td>
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| 112 | </table>
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| 113 | <a name="SEE ALSO"></a>
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| 114 | <h2>SEE ALSO</h2>
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| 115 | <!-- INDENTATION -->
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| 117 | cols="2" cellspacing="0" cellpadding="0">
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| 118 | <tr valign="top" align="left">
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| 119 | <td width="8%"></td>
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| 120 | <td width="91%">
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| 121 | <p><b>TIFFOpen</b>(3TIFF), <b>TIFFReadRawTile</b>(3TIFF),
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| 122 | <b>TIFFReadTile</b>(3TIFF), <b>libtiff</b>(3TIFF)</p>
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| 123 | <!-- INDENTATION -->
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| 124 | <p>Libtiff library home page:
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| 125 | <b>http://www.remotesensing.org/libtiff/</b></p>
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| 126 | </td>
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| 127 | </table>
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| 128 | <hr>
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| 129 | </body>
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| 130 | </html>
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