TIFFcodec¶
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)¶
-
TIFFCodec *TIFFGetConfiguredCODECs(uint16_t scheme)¶
-
int TIFFSetCompressionScheme(TIFF *tif, int 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.
TIFFFindCODEC() ??????
TIFFUnRegisterCODEC() ?????
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.
TIFFGetConfiguredCODECs() gets list of configured codecs,
both built-in and registered by user. Function returns array of
TIFFCodec records (the last record should be NULL) or NULL
if function failed. Caller is responsible to free this structure.
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),