src/tiff/html/man/TIFFcodec.3tiff.html

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   7 <title>CODEC</title>
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  10
  11 <h1 align=center>CODEC</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>
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  27 <p>TIFFFindCODEC, TIFFRegisterCODEC, TIFFUnRegisterCODEC,
  28 TIFFIsCODECConfigured &minus; codec-related utility
  29 routines</p>
  30 </td>
  31 </table>
  32 <a name="SYNOPSIS"></a>
  33 <h2>SYNOPSIS</h2>
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  40 <p><b>#include &lt;tiffio.h&gt;</b></p>
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  42 <p><b>const TIFFCodec* TIFFFindCODEC(uint16</b>
  43 <i>scheme</i><b>);<br>
  44 TIFFCodec* TIFFRegisterCODEC(uint16</b> <i>scheme</i><b>,
  45 const char *</b><i>method</i><b>, TIFFInitMethod</b>
  46 <i>init</i><b>);<br>
  47 void TIFFUnRegisterCODEC(TIFFCodec
  48 *</b><i>codec</i><b>);<br>
  49 int TIFFIsCODECConfigured(uint16</b>
  50 <i>scheme</i><b>);</b></p>
  51 </td>
  52 </table>
  53 <a name="DESCRIPTION"></a>
  54 <h2>DESCRIPTION</h2>
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  61 <p><i>libtiff</i> supports a variety of compression schemes
  62 implemented by software <i>codecs</i>. Each codec adheres to
  63 a modular interface that provides for the decoding and
  64 encoding of image data; as well as some other methods for
  65 initialization, setup, cleanup, and the control of default
  66 strip and tile sizes. Codecs are identified by the
  67 associated value of the <small>TIFF</small>
  68 <i>Compression</i> tag; e.g. 5 for <small>LZW</small>
  69 compression.</p>
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  71 <p>The <i>TIFFRegisterCODEC</i> routine can be used to
  72 augment or override the set of codecs available to an
  73 application. If the specified <i>scheme</i> already has a
  74 registered codec then it is <i>overridden</i> and any images
  75 with data encoded with this compression scheme will be
  76 decoded using the supplied coded.</p>
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  78 <p><i>TIFFIsCODECConfigured</i> returns 1 if the codec is
  79 configured and working. Otherwise 0 will be returned.</p>
  80 </td>
  81 </table>
  82 <a name="DIAGNOSTICS"></a>
  83 <h2>DIAGNOSTICS</h2>
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  90 <p><b>No space to register compression scheme %s</b>.
  91 <i>TIFFRegisterCODEC</i> was unable to allocate memory for
  92 the data structures needed to register a codec.</p>
  93 <!-- INDENTATION -->
  94 <p><b>Cannot remove compression scheme %s; not
  95 registered</b>. <i>TIFFUnRegisterCODEC</i> did not locate
  96 the specified codec in the table of registered compression
  97 schemes.</p>
  98 </td>
  99 </table>
 100 <a name="SEE ALSO"></a>
 101 <h2>SEE ALSO</h2>
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 108 <p><b>libtiff</b>(3TIFF)</p>
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 110 <p>Libtiff library home page:
 111 <b>http://www.remotesensing.org/libtiff/</b></p>
 112 </td>
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