| /* $Id: tif_flush.c,v 1.9 2010-03-31 06:40:10 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)) |
| && !TIFFRewriteDirectory(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: */ |
| /* |
| * Local Variables: |
| * mode: c |
| * c-basic-offset: 8 |
| * fill-column: 78 |
| * End: |
| */ |