ReactOS  0.4.14-dev-323-g6fe6a88
tif_flush.c
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1 /*
2  * Copyright (c) 1988-1997 Sam Leffler
3  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
4  *
5  * Permission to use, copy, modify, distribute, and sell this software and
6  * its documentation for any purpose is hereby granted without fee, provided
7  * that (i) the above copyright notices and this permission notice appear in
8  * all copies of the software and related documentation, and (ii) the names of
9  * Sam Leffler and Silicon Graphics may not be used in any advertising or
10  * publicity relating to the software without the specific, prior written
11  * permission of Sam Leffler and Silicon Graphics.
12  *
13  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
14  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
15  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
16  *
17  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
18  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
19  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
20  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
21  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
22  * OF THIS SOFTWARE.
23  */
24 
25 /*
26  * TIFF Library.
27  */
28 
29 #include <precomp.h>
30 
31 int
33 {
34  if( tif->tif_mode == O_RDONLY )
35  return 1;
36 
37  if (!TIFFFlushData(tif))
38  return (0);
39 
40  /* In update (r+) mode we try to detect the case where
41  only the strip/tile map has been altered, and we try to
42  rewrite only that portion of the directory without
43  making any other changes */
44 
45  if( (tif->tif_flags & TIFF_DIRTYSTRIP)
46  && !(tif->tif_flags & TIFF_DIRTYDIRECT)
47  && tif->tif_mode == O_RDWR )
48  {
49  uint64 *offsets=NULL, *sizes=NULL;
50 
51  if( TIFFIsTiled(tif) )
52  {
53  if( TIFFGetField( tif, TIFFTAG_TILEOFFSETS, &offsets )
56  tif->tif_dir.td_nstrips, offsets )
58  tif->tif_dir.td_nstrips, sizes ) )
59  {
60  tif->tif_flags &= ~TIFF_DIRTYSTRIP;
61  tif->tif_flags &= ~TIFF_BEENWRITING;
62  return 1;
63  }
64  }
65  else
66  {
67  if( TIFFGetField( tif, TIFFTAG_STRIPOFFSETS, &offsets )
70  tif->tif_dir.td_nstrips, offsets )
72  tif->tif_dir.td_nstrips, sizes ) )
73  {
74  tif->tif_flags &= ~TIFF_DIRTYSTRIP;
75  tif->tif_flags &= ~TIFF_BEENWRITING;
76  return 1;
77  }
78  }
79  }
80 
82  && !TIFFRewriteDirectory(tif))
83  return (0);
84 
85  return (1);
86 }
87 
88 /*
89  * Flush buffered data to the file.
90  *
91  * Frank Warmerdam'2000: I modified this to return 1 if TIFF_BEENWRITING
92  * is not set, so that TIFFFlush() will proceed to write out the directory.
93  * The documentation says returning 1 is an error indicator, but not having
94  * been writing isn't exactly a an error. Hopefully this doesn't cause
95  * problems for other people.
96  */
97 int
99 {
100  if ((tif->tif_flags & TIFF_BEENWRITING) == 0)
101  return (1);
102  if (tif->tif_flags & TIFF_POSTENCODE) {
103  tif->tif_flags &= ~TIFF_POSTENCODE;
104  if (!(*tif->tif_postencode)(tif))
105  return (0);
106  }
107  return (TIFFFlushData1(tif));
108 }
109 
110 /* vim: set ts=8 sts=8 sw=8 noet: */
111 /*
112  * Local Variables:
113  * mode: c
114  * c-basic-offset: 8
115  * fill-column: 78
116  * End:
117  */
unsigned long long uint64
Definition: platform.h:18
#define TIFF_BEENWRITING
Definition: tiffiop.h:112
int TIFFRewriteDirectory(TIFF *tif)
Definition: tif_dirwrite.c:216
#define TIFFTAG_STRIPBYTECOUNTS
Definition: tiff.h:234
#define TIFFTAG_STRIPOFFSETS
Definition: tiff.h:222
#define TIFF_DIRTYDIRECT
Definition: tiffiop.h:109
Definition: tiffiop.h:102
#define TIFFTAG_TILEBYTECOUNTS
Definition: tiff.h:289
int TIFFGetField(TIFF *tif, uint32 tag,...)
Definition: tif_dir.c:1215
int TIFFFlushData(TIFF *tif)
Definition: tif_flush.c:98
int tif_mode
Definition: tiffiop.h:105
uint32 tif_flags
Definition: tiffiop.h:106
smooth NULL
Definition: ftsmooth.c:416
#define TIFFTAG_TILEOFFSETS
Definition: tiff.h:288
#define TIFF_POSTENCODE
Definition: tiffiop.h:118
uint32 td_nstrips
Definition: tif_dir.h:99
TIFFBoolMethod tif_postencode
Definition: tiffiop.h:163
#define TIFF_DIRTYSTRIP
Definition: tiffiop.h:127
int TIFFFlush(TIFF *tif)
Definition: tif_flush.c:32
#define O_RDWR
Definition: fcntl.h:36
TIFFDirectory tif_dir
Definition: tiffiop.h:135
int _TIFFRewriteField(TIFF *tif, uint16 tag, TIFFDataType in_datatype, tmsize_t count, void *data)
int TIFFIsTiled(TIFF *tif)
Definition: tif_open.c:577
int TIFFFlushData1(TIFF *tif)
Definition: tif_write.c:792
static const struct @529 sizes[]
#define O_RDONLY
Definition: acwin.h:108