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<HTML><HEAD><TITLE>Manpage of CODEC</TITLE>
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<H1>CODEC</H1>
Section: Misc. Reference Manual Pages (3T)<BR>Updated: October 15, 1995<BR><A HREF="#index">Index</A>
<BR><A HREF="index.html">Return to Main Contents</A>
<HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
TIFFFindCODEC, TIFFRegisterCODEC, TIFFUnRegisterCODEC - codec-related utility routines
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B>#include &lt;<A HREF="file:/usr/include/tiffio.h">tiffio.h</A>&gt;</B>
<BR>
<B>const TIFFCodec* TIFFFindCODEC(uint16 scheme);</B>
<BR>
<B>TIFFCodec* TIFFRegisterCODEC(uint16 scheme, const char* method, TIFFInitMethod init);</B>
<BR>
<B>void TIFFUnRegisterCODEC(TIFFCodec* codec);</B>
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
<I>libtiff</I>
supports a variety of compression schemes implemented by software
<I>codecs</I>.
Each codec adheres to a modular interface that provides for
the decoding and encoding of image data; as well as some other
methods for initialization, setup, cleanup, and the control
of default strip and tile sizes.
Codecs are identified by the associated value of the
<FONT SIZE="-1">TIFF</FONT>
<I>Compression</I>
tag; e.g. 5 for
<FONT SIZE="-1">LZW</FONT>
compression.
<P>
The
<I>TIFFRegisterCODEC</I>
routine can be used to
augment or override the set of codecs available to an application.
If the specified
<I>scheme</I>
already has a registered codec then it is
<I>overridden</I>
and any images with data encoded with this
compression scheme will be decoded using the supplied coded.
<A NAME="lbAE">&nbsp;</A>
<H2>DIAGNOSTICS</H2>
<B>No space to register compression scheme %s</B>.
<I>TIFFRegisterCODEC</I>
was unable to allocate memory for the data structures needed
to register a codec.
<P>
<B>Cannot remove compression scheme %s; not registered</B>.
<I>TIFFUnRegisterCODEC</I>
did not locate the specified codec in the table of registered
compression schemes.
<A NAME="lbAF">&nbsp;</A>
<H2>SEE ALSO</H2>
<I><A HREF="http:/cgi-bin/man2html?libtiff+3t">libtiff</A></I>(3T)
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT><A HREF="#lbAE">DIAGNOSTICS</A><DD>
<DT><A HREF="#lbAF">SEE ALSO</A><DD>
</DL>
<HR>
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Time: 01:31:39 GMT, November 23, 1999
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