forked from Mirrors/freeswitch
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
|
/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_extension.c,v 1.4 2004/10/02 13:29:41 dron Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1988-1997 Sam Leffler
|
||
|
|
* Copyright (c) 1991-1997 Silicon Graphics, Inc.
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, distribute, and sell this software and
|
||
|
|
* its documentation for any purpose is hereby granted without fee, provided
|
||
|
|
* that (i) the above copyright notices and this permission notice appear in
|
||
|
|
* all copies of the software and related documentation, and (ii) the names of
|
||
|
|
* Sam Leffler and Silicon Graphics may not be used in any advertising or
|
||
|
|
* publicity relating to the software without the specific, prior written
|
||
|
|
* permission of Sam Leffler and Silicon Graphics.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
|
||
|
|
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
|
||
|
|
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
*
|
||
|
|
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
|
||
|
|
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
|
||
|
|
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
|
||
|
|
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
|
||
|
|
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
||
|
|
* OF THIS SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* TIFF Library.
|
||
|
|
*
|
||
|
|
* Various routines support external extension of the tag set, and other
|
||
|
|
* application extension capabilities.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "tiffiop.h"
|
||
|
|
|
||
|
|
int TIFFGetTagListCount( TIFF *tif )
|
||
|
|
|
||
|
|
{
|
||
|
|
TIFFDirectory* td = &tif->tif_dir;
|
||
|
|
|
||
|
|
return td->td_customValueCount;
|
||
|
|
}
|
||
|
|
|
||
|
|
ttag_t TIFFGetTagListEntry( TIFF *tif, int tag_index )
|
||
|
|
|
||
|
|
{
|
||
|
|
TIFFDirectory* td = &tif->tif_dir;
|
||
|
|
|
||
|
|
if( tag_index < 0 || tag_index >= td->td_customValueCount )
|
||
|
|
return (ttag_t) -1;
|
||
|
|
else
|
||
|
|
return td->td_customValues[tag_index].info->field_tag;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
** This provides read/write access to the TIFFTagMethods within the TIFF
|
||
|
|
** structure to application code without giving access to the private
|
||
|
|
** TIFF structure.
|
||
|
|
*/
|
||
|
|
TIFFTagMethods *TIFFAccessTagMethods( TIFF *tif )
|
||
|
|
|
||
|
|
{
|
||
|
|
return &(tif->tif_tagmethods);
|
||
|
|
}
|
||
|
|
|
||
|
|
void *TIFFGetClientInfo( TIFF *tif, const char *name )
|
||
|
|
|
||
|
|
{
|
||
|
|
TIFFClientInfoLink *link = tif->tif_clientinfo;
|
||
|
|
|
||
|
|
while( link != NULL && strcmp(link->name,name) != 0 )
|
||
|
|
link = link->next;
|
||
|
|
|
||
|
|
if( link != NULL )
|
||
|
|
return link->data;
|
||
|
|
else
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void TIFFSetClientInfo( TIFF *tif, void *data, const char *name )
|
||
|
|
|
||
|
|
{
|
||
|
|
TIFFClientInfoLink *link = tif->tif_clientinfo;
|
||
|
|
|
||
|
|
/*
|
||
|
|
** Do we have an existing link with this name? If so, just
|
||
|
|
** set it.
|
||
|
|
*/
|
||
|
|
while( link != NULL && strcmp(link->name,name) != 0 )
|
||
|
|
link = link->next;
|
||
|
|
|
||
|
|
if( link != NULL )
|
||
|
|
{
|
||
|
|
link->data = data;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
** Create a new link.
|
||
|
|
*/
|
||
|
|
|
||
|
|
link = (TIFFClientInfoLink *) _TIFFmalloc(sizeof(TIFFClientInfoLink));
|
||
|
|
assert (link != NULL);
|
||
|
|
link->next = tif->tif_clientinfo;
|
||
|
|
link->name = (char *) _TIFFmalloc(strlen(name)+1);
|
||
|
|
assert (link->name != NULL);
|
||
|
|
strcpy(link->name, name);
|
||
|
|
link->data = data;
|
||
|
|
|
||
|
|
tif->tif_clientinfo = link;
|
||
|
|
}
|