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| 1 /* $Id: tif_flush.c,v 1.9 2010-03-31 06:40:10 fwarmerdam Exp $ */ | |
| 2 | |
| 3 /* | |
| 4 * Copyright (c) 1988-1997 Sam Leffler | |
| 5 * Copyright (c) 1991-1997 Silicon Graphics, Inc. | |
| 6 * | |
| 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. | |
| 14 * | |
| 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. | |
| 18 * | |
| 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 | |
| 24 * OF THIS SOFTWARE. | |
| 25 */ | |
| 26 | |
| 27 /* | |
| 28 * TIFF Library. | |
| 29 */ | |
| 30 #include "tiffiop.h" | |
| 31 | |
| 32 int | |
| 33 TIFFFlush(TIFF* tif) | |
| 34 { | |
| 35 if( tif->tif_mode == O_RDONLY ) | |
| 36 return 1; | |
| 37 | |
| 38 if (!TIFFFlushData(tif)) | |
| 39 return (0); | |
| 40 | |
| 41 /* In update (r+) mode we try to detect the case where | |
| 42 only the strip/tile map has been altered, and we try to | |
| 43 rewrite only that portion of the directory without | |
| 44 making any other changes */ | |
| 45 | |
| 46 if( (tif->tif_flags & TIFF_DIRTYSTRIP) | |
| 47 && !(tif->tif_flags & TIFF_DIRTYDIRECT) | |
| 48 && tif->tif_mode == O_RDWR ) | |
| 49 { | |
| 50 uint64 *offsets=NULL, *sizes=NULL; | |
| 51 | |
| 52 if( TIFFIsTiled(tif) ) | |
| 53 { | |
| 54 if( TIFFGetField( tif, TIFFTAG_TILEOFFSETS, &offsets ) | |
| 55 && TIFFGetField( tif, TIFFTAG_TILEBYTECOUNTS, &sizes ) | |
| 56 && _TIFFRewriteField( tif, TIFFTAG_TILEOFFSETS, TIFF_LONG8, | |
| 57 tif->tif_dir.td_nstrips, offsets ) | |
| 58 && _TIFFRewriteField( tif, TIFFTAG_TILEBYTECOUNTS, TIFF_LONG8, | |
| 59 tif->tif_dir.td_nstrips, sizes ) ) | |
| 60 { | |
| 61 tif->tif_flags &= ~TIFF_DIRTYSTRIP; | |
| 62 tif->tif_flags &= ~TIFF_BEENWRITING; | |
| 63 return 1; | |
| 64 } | |
| 65 } | |
| 66 else | |
| 67 { | |
| 68 if( TIFFGetField( tif, TIFFTAG_STRIPOFFSETS, &offsets ) | |
| 69 && TIFFGetField( tif, TIFFTAG_STRIPBYTECOUNTS, &sizes ) | |
| 70 && _TIFFRewriteField( tif, TIFFTAG_STRIPOFFSETS, TIFF_LONG8, | |
| 71 tif->tif_dir.td_nstrips, offsets ) | |
| 72 && _TIFFRewriteField( tif, TIFFTAG_STRIPBYTECOUNTS, TIFF_LONG8, | |
| 73 tif->tif_dir.td_nstrips, sizes ) ) | |
| 74 { | |
| 75 tif->tif_flags &= ~TIFF_DIRTYSTRIP; | |
| 76 tif->tif_flags &= ~TIFF_BEENWRITING; | |
| 77 return 1; | |
| 78 } | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 if ((tif->tif_flags & (TIFF_DIRTYDIRECT|TIFF_DIRTYSTRIP)) | |
| 83 && !TIFFRewriteDirectory(tif)) | |
| 84 return (0); | |
| 85 | |
| 86 return (1); | |
| 87 } | |
| 88 | |
| 89 /* | |
| 90 * Flush buffered data to the file. | |
| 91 * | |
| 92 * Frank Warmerdam'2000: I modified this to return 1 if TIFF_BEENWRITING | |
| 93 * is not set, so that TIFFFlush() will proceed to write out the directory. | |
| 94 * The documentation says returning 1 is an error indicator, but not having | |
| 95 * been writing isn't exactly a an error. Hopefully this doesn't cause | |
| 96 * problems for other people. | |
| 97 */ | |
| 98 int | |
| 99 TIFFFlushData(TIFF* tif) | |
| 100 { | |
| 101 if ((tif->tif_flags & TIFF_BEENWRITING) == 0) | |
| 102 return (1); | |
| 103 if (tif->tif_flags & TIFF_POSTENCODE) { | |
| 104 tif->tif_flags &= ~TIFF_POSTENCODE; | |
| 105 if (!(*tif->tif_postencode)(tif)) | |
| 106 return (0); | |
| 107 } | |
| 108 return (TIFFFlushData1(tif)); | |
| 109 } | |
| 110 | |
| 111 /* vim: set ts=8 sts=8 sw=8 noet: */ | |
| 112 /* | |
| 113 * Local Variables: | |
| 114 * mode: c | |
| 115 * c-basic-offset: 8 | |
| 116 * fill-column: 78 | |
| 117 * End: | |
| 118 */ | |
| 119 | |
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Chromium Code Reviews
Issue 1563103002:
XFA: Upgrade to libtiff 4.0.6. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@xfa