CODEC(3TIFF) CODEC(3TIFF)

NAME

TIFFFindCODEC, TIFFRegisterCODEC, TIFFUnRegisterCODEC,
TIFFIsCODECConfigured - codec-related utility routines

SYNOPSIS

#include <tiffio.h>

const TIFFCodec* TIFFFindCODEC(uint16_t scheme);
TIFFCodec* TIFFRegisterCODEC(uint16_t scheme, const char *method,
TIFFInitMethod init);
void TIFFUnRegisterCODEC(TIFFCodec *codec);
int TIFFIsCODECConfigured(uint16_t scheme);

DESCRIPTION

libtiff supports a variety of compression schemes implemented by
software codecs. 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 TIFF Compression tag; e.g. 5 for LZW
compression.

The TIFFRegisterCODEC routine can be used to augment or override the
set of codecs available to an application. If the specified scheme
already has a registered codec then it is overridden and any images
with data encoded with this compression scheme will be decoded using
the supplied codec.

TIFFIsCODECConfigured returns 1 if the codec is configured and
working. Otherwise 0 will be returned.

DIAGNOSTICS

No space to register compression scheme %s. TIFFRegisterCODEC was
unable to allocate memory for the data structures needed to register
a codec.

Cannot remove compression scheme %s; not registered.
TIFFUnRegisterCODEC did not locate the specified codec in the table
of registered compression schemes.

SEE ALSO

libtiff(3TIFF)

Libtiff library home page: http://www.simplesystems.org/libtiff/

libtiff October 29, 2004 CODEC(3TIFF)