projects / wxWidgets.git / blame
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1 | .\" $Id: TIFFcodec.3tiff,v 1.2 2005/11/02 11:07:18 dron Exp $ |
| 2 | .\" | |
| 3 | .\" Copyright (c) 1995 Sam Leffler | |
| 4 | .\" Copyright (c) 1995 Silicon Graphics, Inc. | |
| 5 | .\" | |
| 6 | .\" Permission to use, copy, modify, distribute, and sell this software and | |
| 7 | .\" its documentation for any purpose is hereby granted without fee, provided | |
| 8 | .\" that (i) the above copyright notices and this permission notice appear in | |
| 9 | .\" all copies of the software and related documentation, and (ii) the names of | |
| 10 | .\" Sam Leffler and Silicon Graphics may not be used in any advertising or | |
| 11 | .\" publicity relating to the software without the specific, prior written | |
| 12 | .\" permission of Sam Leffler and Silicon Graphics. | |
| 13 | .\" | |
| 14 | .\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, | |
| 15 | .\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY | |
| 16 | .\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. | |
| 17 | .\" | |
| 18 | .\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR | |
| 19 | .\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, | |
| 20 | .\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
| 21 | .\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF | |
| 22 | .\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
| 23 | .\" OF THIS SOFTWARE. | |
| 24 | .\" | |
| 25 | .if n .po 0 | |
| 26 | .TH CODEC 3TIFF "October 29, 2004" "libtiff" | |
| 27 | .SH NAME | |
| 28 | TIFFFindCODEC, TIFFRegisterCODEC, TIFFUnRegisterCODEC, TIFFIsCODECConfigured | |
| 29 | \- codec-related utility routines | |
| 30 | .SH SYNOPSIS | |
| 31 | .B "#include <tiffio.h>" | |
| 32 | .sp | |
| 33 | .BI "const TIFFCodec* TIFFFindCODEC(uint16 " scheme ");" | |
| 34 | .br | |
| 35 | .BI "TIFFCodec* TIFFRegisterCODEC(uint16 " scheme ", const char *" method ", TIFFInitMethod " init ");" | |
| 36 | .br | |
| 37 | .BI "void TIFFUnRegisterCODEC(TIFFCodec *" codec ");" | |
| 38 | .br | |
| 39 | .BI "int TIFFIsCODECConfigured(uint16 " scheme ");" | |
| 40 | .SH DESCRIPTION | |
| 41 | .I libtiff | |
| 42 | supports a variety of compression schemes implemented by software | |
| 43 | .IR codecs . | |
| 44 | Each codec adheres to a modular interface that provides for | |
| 45 | the decoding and encoding of image data; as well as some other | |
| 46 | methods for initialization, setup, cleanup, and the control | |
| 47 | of default strip and tile sizes. | |
| 48 | Codecs are identified by the associated value of the | |
| 49 | .SM TIFF | |
| 50 | .I Compression | |
| 51 | tag; e.g. 5 for | |
| 52 | .SM LZW | |
| 53 | compression. | |
| 54 | .PP | |
| 55 | The | |
| 56 | .I TIFFRegisterCODEC | |
| 57 | routine can be used to | |
| 58 | augment or override the set of codecs available to an application. | |
| 59 | If the specified | |
| 60 | .I scheme | |
| 61 | already has a registered codec then it is | |
| 62 | .I overridden | |
| 63 | and any images with data encoded with this | |
| 64 | compression scheme will be decoded using the supplied coded. | |
| 65 | .PP | |
| 66 | .I TIFFIsCODECConfigured | |
| 67 | returns 1 if the codec is configured and working. Otherwise 0 will be returned. | |
| 68 | .SH DIAGNOSTICS | |
| 69 | .BR "No space to register compression scheme %s" . | |
| 70 | .I TIFFRegisterCODEC | |
| 71 | was unable to allocate memory for the data structures needed | |
| 72 | to register a codec. | |
| 73 | .PP | |
| 74 | .BR "Cannot remove compression scheme %s; not registered" . | |
| 75 | .I TIFFUnRegisterCODEC | |
| 76 | did not locate the specified codec in the table of registered | |
| 77 | compression schemes. | |
| 78 | .SH "SEE ALSO" | |
| 79 | .BR libtiff (3TIFF) | |
| 80 | .PP | |
| 81 | Libtiff library home page: | |
| 82 | .BR http://www.remotesensing.org/libtiff/ |