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<!-- Creator : groff version 1.22.4 --> <!-- CreationDate: Sun Nov 2 19:00:00 2025 --> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta name="generator" content="groff -Thtml, see www.gnu.org"> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <meta name="Content-Style" content="text/css"> <style type="text/css"> p { margin-top: 0; margin-bottom: 0; vertical-align: top } pre { margin-top: 0; margin-bottom: 0; vertical-align: top } table { margin-top: 0; margin-bottom: 0; vertical-align: top } h1 { text-align: center } </style> <title>CODEC</title> </head> <body> <h1 align="center">CODEC</h1> <a href="#NAME">NAME</a><br> <a href="#SYNOPSIS">SYNOPSIS</a><br> <a href="#DESCRIPTION">DESCRIPTION</a><br> <a href="#DIAGNOSTICS">DIAGNOSTICS</a><br> <a href="#SEE ALSO">SEE ALSO</a><br> <hr> <h2>NAME <a name="NAME"></a> </h2> <p style="margin-left:11%; margin-top: 1em">TIFFFindCODEC, TIFFRegisterCODEC, TIFFUnRegisterCODEC, TIFFIsCODECConfigured − codec-related utility routines</p> <h2>SYNOPSIS <a name="SYNOPSIS"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><b>#include <tiffio.h></b></p> <p style="margin-left:11%; margin-top: 1em"><b>const TIFFCodec* TIFFFindCODEC(uint16_t</b> <i>scheme</i><b>); <br> TIFFCodec* TIFFRegisterCODEC(uint16_t</b> <i>scheme</i><b>, const char *</b><i>method</i><b>, TIFFInitMethod</b> <i>init</i><b>); <br> void TIFFUnRegisterCODEC(TIFFCodec *</b><i>codec</i><b>); <br> int TIFFIsCODECConfigured(uint16_t</b> <i>scheme</i><b>);</b></p> <h2>DESCRIPTION <a name="DESCRIPTION"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><b><i>libtiff</i></b> 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 <small>TIFF</small> <i>Compression</i> tag; e.g. 5 for <small>LZW</small> compression.</p> <p style="margin-left:11%; margin-top: 1em">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 codec.</p> <p style="margin-left:11%; margin-top: 1em"><i>TIFFIsCODECConfigured</i> returns 1 if the codec is configured and working. Otherwise 0 will be returned.</p> <h2>DIAGNOSTICS <a name="DIAGNOSTICS"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><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> <p style="margin-left:11%; margin-top: 1em"><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.</p> <h2>SEE ALSO <a name="SEE ALSO"></a> </h2> <p style="margin-left:11%; margin-top: 1em"><b>libtiff</b>(3TIFF)</p> <p style="margin-left:11%; margin-top: 1em">Libtiff library home page: <b>http://www.simplesystems.org/libtiff/</b></p> <hr> </body> </html>