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Examples
tif_flush.c
Go to the documentation of this file.
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
32
TIFFFlush
(
TIFF
* tif)
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
if
(
TIFFForceStrileArrayWriting
(tif) )
50
return
1;
51
}
52
53
if
((tif->
tif_flags
& (
TIFF_DIRTYDIRECT
|
TIFF_DIRTYSTRIP
))
54
&& !
TIFFRewriteDirectory
(tif))
55
return
(0);
56
57
return
(1);
58
}
59
60
/*
61
* This is an advanced writing function that must be used in a particular
62
* sequence, and together with TIFFDeferStrileArrayWriting(),
63
* to make its intended effect. Its aim is to force the writing of
64
* the [Strip/Tile][Offsets/ByteCounts] arrays at the end of the file, when
65
* they have not yet been rewritten.
66
*
67
* The typical sequence of calls is:
68
* TIFFOpen()
69
* [ TIFFCreateDirectory(tif) ]
70
* Set fields with calls to TIFFSetField(tif, ...)
71
* TIFFDeferStrileArrayWriting(tif)
72
* TIFFWriteCheck(tif, ...)
73
* TIFFWriteDirectory(tif)
74
* ... potentially create other directories and come back to the above directory
75
* TIFFForceStrileArrayWriting(tif)
76
*
77
* Returns 1 in case of success, 0 otherwise.
78
*/
79
int
TIFFForceStrileArrayWriting
(
TIFF
* tif)
80
{
81
static
const
char
module
[] =
"TIFFForceStrileArrayWriting"
;
82
const
int
isTiled
=
TIFFIsTiled
(tif);
83
84
if
(tif->
tif_mode
==
O_RDONLY
)
85
{
86
TIFFErrorExt
(tif->
tif_clientdata
, tif->
tif_name
,
87
"File opened in read-only mode"
);
88
return
0;
89
}
90
if
( tif->
tif_diroff
== 0 )
91
{
92
TIFFErrorExt
(tif->
tif_clientdata
,
module
,
93
"Directory has not yet been written"
);
94
return
0;
95
}
96
if
( (tif->
tif_flags
&
TIFF_DIRTYDIRECT
) != 0 )
97
{
98
TIFFErrorExt
(tif->
tif_clientdata
,
module
,
99
"Directory has changes other than the strile arrays. "
100
"TIFFRewriteDirectory() should be called instead"
);
101
return
0;
102
}
103
104
if
( !(tif->
tif_flags
&
TIFF_DIRTYSTRIP
) )
105
{
106
if
( !(tif->
tif_dir
.
td_stripoffset_entry
.
tdir_tag
!= 0 &&
107
tif->
tif_dir
.
td_stripoffset_entry
.
tdir_count
== 0 &&
108
tif->
tif_dir
.
td_stripoffset_entry
.
tdir_type
== 0 &&
109
tif->
tif_dir
.
td_stripoffset_entry
.
tdir_offset
.
toff_long8
== 0 &&
110
tif->
tif_dir
.
td_stripbytecount_entry
.
tdir_tag
!= 0 &&
111
tif->
tif_dir
.
td_stripbytecount_entry
.
tdir_count
== 0 &&
112
tif->
tif_dir
.
td_stripbytecount_entry
.
tdir_type
== 0 &&
113
tif->
tif_dir
.
td_stripbytecount_entry
.
tdir_offset
.
toff_long8
== 0) )
114
{
115
TIFFErrorExt
(tif->
tif_clientdata
,
module
,
116
"Function not called together with "
117
"TIFFDeferStrileArrayWriting()"
);
118
return
0;
119
}
120
121
if
(tif->
tif_dir
.
td_stripoffset_p
==
NULL
&& !
TIFFSetupStrips
(tif))
122
return
0;
123
}
124
125
if
(
_TIFFRewriteField
( tif,
126
isTiled
?
TIFFTAG_TILEOFFSETS
:
127
TIFFTAG_STRIPOFFSETS
,
128
TIFF_LONG8
,
129
tif->
tif_dir
.
td_nstrips
,
130
tif->
tif_dir
.
td_stripoffset_p
)
131
&&
_TIFFRewriteField
( tif,
132
isTiled
?
TIFFTAG_TILEBYTECOUNTS
:
133
TIFFTAG_STRIPBYTECOUNTS
,
134
TIFF_LONG8
,
135
tif->
tif_dir
.
td_nstrips
,
136
tif->
tif_dir
.
td_stripbytecount_p
) )
137
{
138
tif->
tif_flags
&= ~TIFF_DIRTYSTRIP;
139
tif->
tif_flags
&= ~TIFF_BEENWRITING;
140
return
1;
141
}
142
143
return
0;
144
}
145
146
/*
147
* Flush buffered data to the file.
148
*
149
* Frank Warmerdam'2000: I modified this to return 1 if TIFF_BEENWRITING
150
* is not set, so that TIFFFlush() will proceed to write out the directory.
151
* The documentation says returning 1 is an error indicator, but not having
152
* been writing isn't exactly a an error. Hopefully this doesn't cause
153
* problems for other people.
154
*/
155
int
156
TIFFFlushData
(
TIFF
* tif)
157
{
158
if
((tif->
tif_flags
&
TIFF_BEENWRITING
) == 0)
159
return
(1);
160
if
(tif->
tif_flags
&
TIFF_POSTENCODE
) {
161
tif->
tif_flags
&= ~TIFF_POSTENCODE;
162
if
(!(*tif->
tif_postencode
)(tif))
163
return
(0);
164
}
165
return
(
TIFFFlushData1
(tif));
166
}
167
168
/* vim: set ts=8 sts=8 sw=8 noet: */
169
/*
170
* Local Variables:
171
* mode: c
172
* c-basic-offset: 8
173
* fill-column: 78
174
* End:
175
*/
O_RDONLY
#define O_RDONLY
Definition:
acwin.h:108
NULL
#define NULL
Definition:
types.h:112
O_RDWR
#define O_RDWR
Definition:
fcntl.h:36
TIFFDirEntry::toff_long8
uint64 toff_long8
Definition:
tif_dir.h:59
TIFFDirEntry::tdir_offset
union TIFFDirEntry::@3463 tdir_offset
TIFFDirEntry::tdir_count
uint64 tdir_count
Definition:
tif_dir.h:55
TIFFDirEntry::tdir_tag
uint16 tdir_tag
Definition:
tif_dir.h:53
TIFFDirEntry::tdir_type
uint16 tdir_type
Definition:
tif_dir.h:54
TIFFDirectory::td_stripbytecount_p
uint64 * td_stripbytecount_p
Definition:
tif_dir.h:102
TIFFDirectory::td_stripoffset_entry
TIFFDirEntry td_stripoffset_entry
Definition:
tif_dir.h:107
TIFFDirectory::td_nstrips
uint32 td_nstrips
Definition:
tif_dir.h:100
TIFFDirectory::td_stripoffset_p
uint64 * td_stripoffset_p
Definition:
tif_dir.h:101
TIFFDirectory::td_stripbytecount_entry
TIFFDirEntry td_stripbytecount_entry
Definition:
tif_dir.h:108
module
Definition:
dbghelp_private.h:377
tiff
Definition:
tiffiop.h:115
tiff::tif_clientdata
thandle_t tif_clientdata
Definition:
tiffiop.h:207
tiff::tif_name
char * tif_name
Definition:
tiffiop.h:116
tiff::tif_flags
uint32 tif_flags
Definition:
tiffiop.h:119
tiff::tif_dir
TIFFDirectory tif_dir
Definition:
tiffiop.h:151
tiff::tif_postencode
TIFFBoolMethod tif_postencode
Definition:
tiffiop.h:179
tiff::tif_diroff
uint64 tif_diroff
Definition:
tiffiop.h:146
tiff::tif_mode
int tif_mode
Definition:
tiffiop.h:118
_TIFFRewriteField
int _TIFFRewriteField(TIFF *tif, uint16 tag, TIFFDataType in_datatype, tmsize_t count, void *data)
Definition:
tif_dirwrite.c:2824
TIFFRewriteDirectory
int TIFFRewriteDirectory(TIFF *tif)
Definition:
tif_dirwrite.c:261
TIFFErrorExt
void TIFFErrorExt(thandle_t fd, const char *module, const char *fmt,...)
Definition:
tif_error.c:65
TIFFForceStrileArrayWriting
int TIFFForceStrileArrayWriting(TIFF *tif)
Definition:
tif_flush.c:79
TIFFFlushData
int TIFFFlushData(TIFF *tif)
Definition:
tif_flush.c:156
TIFFFlush
int TIFFFlush(TIFF *tif)
Definition:
tif_flush.c:32
TIFFIsTiled
int TIFFIsTiled(TIFF *tif)
Definition:
tif_open.c:594
TIFFFlushData1
int TIFFFlushData1(TIFF *tif)
Definition:
tif_write.c:803
TIFFSetupStrips
int TIFFSetupStrips(TIFF *tif)
Definition:
tif_write.c:523
TIFF_LONG8
@ TIFF_LONG8
Definition:
tiff.h:138
TIFFTAG_TILEBYTECOUNTS
#define TIFFTAG_TILEBYTECOUNTS
Definition:
tiff.h:288
TIFFTAG_STRIPBYTECOUNTS
#define TIFFTAG_STRIPBYTECOUNTS
Definition:
tiff.h:233
TIFFTAG_TILEOFFSETS
#define TIFFTAG_TILEOFFSETS
Definition:
tiff.h:287
TIFFTAG_STRIPOFFSETS
#define TIFFTAG_STRIPOFFSETS
Definition:
tiff.h:221
isTiled
#define isTiled(tif)
Definition:
tiffiop.h:229
TIFF_POSTENCODE
#define TIFF_POSTENCODE
Definition:
tiffiop.h:131
TIFF_BEENWRITING
#define TIFF_BEENWRITING
Definition:
tiffiop.h:125
TIFF_DIRTYSTRIP
#define TIFF_DIRTYSTRIP
Definition:
tiffiop.h:140
TIFF_DIRTYDIRECT
#define TIFF_DIRTYDIRECT
Definition:
tiffiop.h:122
precomp.h
dll
3rdparty
libtiff
tif_flush.c
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