projects / wxWidgets.git / blame
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1 | <!-- Creator : groff version 1.18.1 --> |
| 2 | <!-- CreationDate: Mon Mar 13 18:03:09 2006 --> | |
| 3 | <html> | |
| 4 | <head> | |
| 5 | <meta name="generator" content="groff -Thtml, see www.gnu.org"> | |
| 6 | <meta name="Content-Style" content="text/css"> | |
| 7 | <title>TIFFReadEncodedTile</title> | |
| 8 | </head> | |
| 9 | <body> | |
| 10 | ||
| 11 | <h1 align=center>TIFFReadEncodedTile</h1> | |
| 12 | <a href="#NAME">NAME</a><br> | |
| 13 | <a href="#SYNOPSIS">SYNOPSIS</a><br> | |
| 14 | <a href="#DESCRIPTION">DESCRIPTION</a><br> | |
| 15 | <a href="#NOTES">NOTES</a><br> | |
| 16 | <a href="#RETURN VALUES">RETURN VALUES</a><br> | |
| 17 | <a href="#DIAGNOSTICS">DIAGNOSTICS</a><br> | |
| 18 | <a href="#SEE ALSO">SEE ALSO</a><br> | |
| 19 | ||
| 20 | <hr> | |
| 21 | <a name="NAME"></a> | |
| 22 | <h2>NAME</h2> | |
| 23 | <!-- INDENTATION --> | |
| 24 | <table width="100%" border=0 rules="none" frame="void" | |
| 25 | cols="2" cellspacing="0" cellpadding="0"> | |
| 26 | <tr valign="top" align="left"> | |
| 27 | <td width="8%"></td> | |
| 28 | <td width="91%"> | |
| 29 | <p>TIFFReadEncodedTile − read and decode a tile of | |
| 30 | data from an open <small>TIFF</small> file</p> | |
| 31 | </td> | |
| 32 | </table> | |
| 33 | <a name="SYNOPSIS"></a> | |
| 34 | <h2>SYNOPSIS</h2> | |
| 35 | <!-- INDENTATION --> | |
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| 40 | <td width="91%"> | |
| 41 | <p><b>#include <tiffio.h></b></p> | |
| 42 | <!-- INDENTATION --> | |
| 43 | <p><b>int TIFFReadEncodedTile(TIFF *</b><i>tif</i><b>, | |
| 44 | u_long</b> <i>tile</i><b>, u_char *</b><i>buf</i><b>, | |
| 45 | u_long</b> <i>size</i><b>)</b></p> | |
| 46 | </td> | |
| 47 | </table> | |
| 48 | <a name="DESCRIPTION"></a> | |
| 49 | <h2>DESCRIPTION</h2> | |
| 50 | <!-- INDENTATION --> | |
| 51 | <table width="100%" border=0 rules="none" frame="void" | |
| 52 | cols="2" cellspacing="0" cellpadding="0"> | |
| 53 | <tr valign="top" align="left"> | |
| 54 | <td width="8%"></td> | |
| 55 | <td width="91%"> | |
| 56 | <p>Read the specified tile of data and place up to | |
| 57 | <i>size</i> bytes of decompressed information in the (user | |
| 58 | supplied) data buffer.</p> | |
| 59 | </td> | |
| 60 | </table> | |
| 61 | <a name="NOTES"></a> | |
| 62 | <h2>NOTES</h2> | |
| 63 | <!-- INDENTATION --> | |
| 64 | <table width="100%" border=0 rules="none" frame="void" | |
| 65 | cols="2" cellspacing="0" cellpadding="0"> | |
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| 67 | <td width="8%"></td> | |
| 68 | <td width="91%"> | |
| 69 | <p>The value of <i>tile</i> is a ‘‘raw tile | |
| 70 | number.’’ That is, the caller must take into | |
| 71 | account whether or not the data are organized in separate | |
| 72 | planes (<i>PlanarConfiguration</i>=2). | |
| 73 | <i>TIFFComputeTile</i> automatically does this when | |
| 74 | converting an (x,y,z,sample) coordinate quadruple to a tile | |
| 75 | number. To read a full tile of data the data buffer should | |
| 76 | be at least as large as the value returned by | |
| 77 | <i>TIFFTileSize</i>.</p> | |
| 78 | <!-- INDENTATION --> | |
| 79 | <p>The library attempts to hide bit- and byte-ordering | |
| 80 | differences between the image and the native machine by | |
| 81 | converting data to the native machine order. Bit reversal is | |
| 82 | done if the <i>FillOrder</i> tag is opposite to the native | |
| 83 | machine bit order. 16- and 32-bit samples are automatically | |
| 84 | byte-swapped if the file was written with a byte order | |
| 85 | opposite to the native machine byte order,</p> | |
| 86 | </td> | |
| 87 | </table> | |
| 88 | <a name="RETURN VALUES"></a> | |
| 89 | <h2>RETURN VALUES</h2> | |
| 90 | <!-- INDENTATION --> | |
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| 94 | <td width="8%"></td> | |
| 95 | <td width="91%"> | |
| 96 | <p>The actual number of bytes of data that were placed in | |
| 97 | <i>buf</i> is returned; <i>TIFFReadEncodedTile</i> returns | |
| 98 | −1 if an error was encountered.</p> | |
| 99 | </td> | |
| 100 | </table> | |
| 101 | <a name="DIAGNOSTICS"></a> | |
| 102 | <h2>DIAGNOSTICS</h2> | |
| 103 | <!-- INDENTATION --> | |
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| 108 | <td width="91%"> | |
| 109 | <p>All error messages are directed to the | |
| 110 | <b>TIFFError</b>(3TIFF) routine.</p> | |
| 111 | </td> | |
| 112 | </table> | |
| 113 | <a name="SEE ALSO"></a> | |
| 114 | <h2>SEE ALSO</h2> | |
| 115 | <!-- INDENTATION --> | |
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| 118 | <tr valign="top" align="left"> | |
| 119 | <td width="8%"></td> | |
| 120 | <td width="91%"> | |
| 121 | <p><b>TIFFOpen</b>(3TIFF), <b>TIFFReadRawTile</b>(3TIFF), | |
| 122 | <b>TIFFReadTile</b>(3TIFF), <b>libtiff</b>(3TIFF)</p> | |
| 123 | <!-- INDENTATION --> | |
| 124 | <p>Libtiff library home page: | |
| 125 | <b>http://www.remotesensing.org/libtiff/</b></p> | |
| 126 | </td> | |
| 127 | </table> | |
| 128 | <hr> | |
| 129 | </body> | |
| 130 | </html> |