112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
/* $Id: tif_flush.c,v 1.7 2008-12-21 20:31:33 fwarmerdam 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.
|
|
*/
|
|
#include "tiffiop.h"
|
|
|
|
int
|
|
TIFFFlush(TIFF* tif)
|
|
{
|
|
if( tif->tif_mode == O_RDONLY )
|
|
return 1;
|
|
|
|
if (!TIFFFlushData(tif))
|
|
return (0);
|
|
|
|
/* In update (r+) mode we try to detect the case where
|
|
only the strip/tile map has been altered, and we try to
|
|
rewrite only that portion of the directory without
|
|
making any other changes */
|
|
|
|
if( (tif->tif_flags & TIFF_DIRTYSTRIP)
|
|
&& !(tif->tif_flags & TIFF_DIRTYDIRECT)
|
|
&& tif->tif_mode == O_RDWR )
|
|
{
|
|
uint64 *offsets=NULL, *sizes=NULL;
|
|
|
|
if( TIFFIsTiled(tif) )
|
|
{
|
|
if( TIFFGetField( tif, TIFFTAG_TILEOFFSETS, &offsets )
|
|
&& TIFFGetField( tif, TIFFTAG_TILEBYTECOUNTS, &sizes )
|
|
&& _TIFFRewriteField( tif, TIFFTAG_TILEOFFSETS, TIFF_LONG8,
|
|
tif->tif_dir.td_nstrips, offsets )
|
|
&& _TIFFRewriteField( tif, TIFFTAG_TILEBYTECOUNTS, TIFF_LONG8,
|
|
tif->tif_dir.td_nstrips, sizes ) )
|
|
{
|
|
tif->tif_flags &= ~TIFF_DIRTYSTRIP;
|
|
tif->tif_flags &= ~TIFF_BEENWRITING;
|
|
return 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if( TIFFGetField( tif, TIFFTAG_STRIPOFFSETS, &offsets )
|
|
&& TIFFGetField( tif, TIFFTAG_STRIPBYTECOUNTS, &sizes )
|
|
&& _TIFFRewriteField( tif, TIFFTAG_STRIPOFFSETS, TIFF_LONG8,
|
|
tif->tif_dir.td_nstrips, offsets )
|
|
&& _TIFFRewriteField( tif, TIFFTAG_STRIPBYTECOUNTS, TIFF_LONG8,
|
|
tif->tif_dir.td_nstrips, sizes ) )
|
|
{
|
|
tif->tif_flags &= ~TIFF_DIRTYSTRIP;
|
|
tif->tif_flags &= ~TIFF_BEENWRITING;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((tif->tif_flags & (TIFF_DIRTYDIRECT|TIFF_DIRTYSTRIP))
|
|
&& !TIFFWriteDirectory(tif))
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Flush buffered data to the file.
|
|
*
|
|
* Frank Warmerdam'2000: I modified this to return 1 if TIFF_BEENWRITING
|
|
* is not set, so that TIFFFlush() will proceed to write out the directory.
|
|
* The documentation says returning 1 is an error indicator, but not having
|
|
* been writing isn't exactly a an error. Hopefully this doesn't cause
|
|
* problems for other people.
|
|
*/
|
|
int
|
|
TIFFFlushData(TIFF* tif)
|
|
{
|
|
if ((tif->tif_flags & TIFF_BEENWRITING) == 0)
|
|
return (1);
|
|
if (tif->tif_flags & TIFF_POSTENCODE) {
|
|
tif->tif_flags &= ~TIFF_POSTENCODE;
|
|
if (!(*tif->tif_postencode)(tif))
|
|
return (0);
|
|
}
|
|
return (TIFFFlushData1(tif));
|
|
}
|
|
|
|
/* vim: set ts=8 sts=8 sw=8 noet: */
|