src/tiff/html/man/TIFFswab.3tiff.html

   1 <!-- Creator     : groff version 1.18.1 -->
   2 <!-- CreationDate: Sat Feb 24 18:37:18 2007 -->
   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>SWAB</title>
   8 </head>
   9 <body>
  10
  11 <h1 align=center>SWAB</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="#DIAGNOSTICS">DIAGNOSTICS</a><br>
  16 <a href="#SEE ALSO">SEE ALSO</a><br>
  17
  18 <hr>
  19 <a name="NAME"></a>
  20 <h2>NAME</h2>
  21 <!-- INDENTATION -->
  22 <table width="100%" border=0 rules="none" frame="void"
  23        cols="2" cellspacing="0" cellpadding="0">
  24 <tr valign="top" align="left">
  25 <td width="8%"></td>
  26 <td width="91%">
  27 <p>TIFFGetBitRevTable, TIFFReverseBits, TIFFSwabShort,
  28 TIFFSwabLong, TIFFSwabArrayOfShort, TIFFSwabArrayOfLong
  29 &minus; byte- and bit-swapping routines</p>
  30 </td>
  31 </table>
  32 <a name="SYNOPSIS"></a>
  33 <h2>SYNOPSIS</h2>
  34 <!-- INDENTATION -->
  35 <table width="100%" border=0 rules="none" frame="void"
  36        cols="2" cellspacing="0" cellpadding="0">
  37 <tr valign="top" align="left">
  38 <td width="8%"></td>
  39 <td width="91%">
  40 <p><b>#include &lt;tiffio.h&gt;</b></p>
  41 <!-- INDENTATION -->
  42 <p><b>const unsigned char* TIFFGetBitRevTable(int</b>
  43 <i>reversed</i><b>)<br>
  44 void TIFFReverseBits(u_char *</b><i>data</i><b>, unsigned
  45 long</b> <i>nbytes</i><b>)<br>
  46 void TIFFSwabShort(uint16 *</b><i>data</i><b>)<br>
  47 void TIFFSwabLong(uint32 *</b><i>data</i><b>)<br>
  48 void TIFFSwabArrayOfShort(uint16 *</b><i>data</i><b>,
  49 unsigned long</b> <i>nshorts</i><b>)<br>
  50 void TIFFSwabArrayOfLong(uint32 *</b><i>data</i><b>,
  51 unsigned long</b> <i>nlongs</i><b>)</b></p>
  52 </td>
  53 </table>
  54 <a name="DESCRIPTION"></a>
  55 <h2>DESCRIPTION</h2>
  56 <!-- INDENTATION -->
  57 <table width="100%" border=0 rules="none" frame="void"
  58        cols="2" cellspacing="0" cellpadding="0">
  59 <tr valign="top" align="left">
  60 <td width="8%"></td>
  61 <td width="91%">
  62 <p>The following routines are used by the library to swap
  63 16- and 32-bit data and to reverse the order of bits in
  64 bytes.</p>
  65 <!-- INDENTATION -->
  66 <p><i>TIFFSwabShort</i> and <i>TIFFSwabLong</i> swap the
  67 bytes in a single 16-bit and 32-bit item, respectively.
  68 <i>TIFFSwabArrayOfShort</i> and <i>TIFFSwabArrayOfLong</i>
  69 swap the bytes in an array of 16-bit and 32-bit items,
  70 respectively.</p>
  71 <!-- INDENTATION -->
  72 <p><i>TIFFReverseBits</i> replaces each byte in <i>data</i>
  73 with the equivalent bit-reversed value. This operation is
  74 performed with a lookup table, which is returned using the
  75 <i>TIFFGetBitRevTable</i> function. <i>reversed</i>
  76 parameter specifies which table should be returned. Supply
  77 <i>1</i> if you want bit reversal table. Supply <i>0</i> to
  78 get the table that do not reverse bit values. It is a lookup
  79 table that can be used as an <i>identity function</i>; i.e.
  80 <i>TIFFNoBitRevTable[n] == n</i>.</p>
  81 </td>
  82 </table>
  83 <a name="DIAGNOSTICS"></a>
  84 <h2>DIAGNOSTICS</h2>
  85 <!-- INDENTATION -->
  86 <table width="100%" border=0 rules="none" frame="void"
  87        cols="2" cellspacing="0" cellpadding="0">
  88 <tr valign="top" align="left">
  89 <td width="8%"></td>
  90 <td width="91%">
  91 <p>None.</p>
  92 </td>
  93 </table>
  94 <a name="SEE ALSO"></a>
  95 <h2>SEE ALSO</h2>
  96 <!-- INDENTATION -->
  97 <table width="100%" border=0 rules="none" frame="void"
  98        cols="2" cellspacing="0" cellpadding="0">
  99 <tr valign="top" align="left">
 100 <td width="8%"></td>
 101 <td width="91%">
 102 <p><b>libtiff</b>(3TIFF)</p>
 103 <!-- INDENTATION -->
 104 <p>Libtiff library home page:
 105 <b>http://www.remotesensing.org/libtiff/</b></p>
 106 </td>
 107 </table>
 108 <hr>
 109 </body>
 110 </html>