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<title>CODEC</title>

CODEC

NAME

SYNOPSIS

DESCRIPTION

DIAGNOSTICS

SEE ALSO

NAME

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TIFFFindCODEC, TIFFRegisterCODEC, TIFFUnRegisterCODEC,

TIFFIsCODECConfigured − codec-related utility

routines

SYNOPSIS

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#include <tiffio.h>

const TIFFCodec* TIFFFindCODEC(uint16

scheme);

TIFFCodec* TIFFRegisterCODEC(uint16 scheme,

const char *method, TIFFInitMethod

init);

void TIFFUnRegisterCODEC(TIFFCodec

*codec);

int TIFFIsCODECConfigured(uint16

scheme);

DESCRIPTION

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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 <small>TIFF</small>

Compression tag; e.g. 5 for <small>LZW</small>

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 coded.

TIFFIsCODECConfigured returns 1 if the codec is

configured and working. Otherwise 0 will be returned.

DIAGNOSTICS

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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

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libtiff(3TIFF)

Libtiff library home page:

http://www.remotesensing.org/libtiff/