1 /* $Header: /home/vp/work/opencv-cvsbackup/opencv/3rdparty/libtiff/tif_extension.c,v 1.1 2005-06-17 13:54:52 vp153 Exp $ */
4 * Copyright (c) 1988-1997 Sam Leffler
5 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
7 * Permission to use, copy, modify, distribute, and sell this software and
8 * its documentation for any purpose is hereby granted without fee, provided
9 * that (i) the above copyright notices and this permission notice appear in
10 * all copies of the software and related documentation, and (ii) the names of
11 * Sam Leffler and Silicon Graphics may not be used in any advertising or
12 * publicity relating to the software without the specific, prior written
13 * permission of Sam Leffler and Silicon Graphics.
15 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
17 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
19 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
20 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
21 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
22 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
23 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
30 * Various routines support external extension of the tag set, and other
31 * application extension capabilities.
36 int TIFFGetTagListCount( TIFF *tif )
39 TIFFDirectory* td = &tif->tif_dir;
41 return td->td_customValueCount;
44 ttag_t TIFFGetTagListEntry( TIFF *tif, int tag_index )
47 TIFFDirectory* td = &tif->tif_dir;
49 if( tag_index < 0 || tag_index >= td->td_customValueCount )
52 return td->td_customValues[tag_index].info->field_tag;
56 ** This provides read/write access to the TIFFTagMethods within the TIFF
57 ** structure to application code without giving access to the private
60 TIFFTagMethods *TIFFAccessTagMethods( TIFF *tif )
63 return &(tif->tif_tagmethods);
66 void *TIFFGetClientInfo( TIFF *tif, const char *name )
69 TIFFClientInfoLink *link = tif->tif_clientinfo;
71 while( link != NULL && strcmp(link->name,name) != 0 )
80 void TIFFSetClientInfo( TIFF *tif, void *data, const char *name )
83 TIFFClientInfoLink *link = tif->tif_clientinfo;
86 ** Do we have an existing link with this name? If so, just
89 while( link != NULL && strcmp(link->name,name) != 0 )
102 link = (TIFFClientInfoLink *) _TIFFmalloc(sizeof(TIFFClientInfoLink));
103 assert (link != NULL);
104 link->next = tif->tif_clientinfo;
105 link->name = (char *) _TIFFmalloc(strlen(name)+1);
106 assert (link->name != NULL);
107 strcpy(link->name, name);
110 tif->tif_clientinfo = link;