Bug Summary

File:libs/tiff-4.0.2/libtiff/tif_write.c
Location:line 303, column 24
Description:Division by zero

Annotated Source Code

1/* $Id: tif_write.c,v 1.36 2011-02-18 20:53:04 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 * Scanline-oriented Write Support
31 */
32#include "tiffiop.h"
33#include <stdio.h>
34
35#define STRIPINCR20 20 /* expansion factor on strip array */
36
37#define WRITECHECKSTRIPS(tif, module)(((tif)->tif_flags&0x00040) || TIFFWriteCheck((tif),0,
module)) \
38 (((tif)->tif_flags&TIFF_BEENWRITING0x00040) || TIFFWriteCheck((tif),0,module))
39#define WRITECHECKTILES(tif, module)(((tif)->tif_flags&0x00040) || TIFFWriteCheck((tif),1,
module)) \
40 (((tif)->tif_flags&TIFF_BEENWRITING0x00040) || TIFFWriteCheck((tif),1,module))
41#define BUFFERCHECK(tif)((((tif)->tif_flags & 0x00010) && tif->tif_rawdata
) || TIFFWriteBufferSetup((tif), ((void*)0), (tmsize_t) -1)) \
42 ((((tif)->tif_flags & TIFF_BUFFERSETUP0x00010) && tif->tif_rawdata) || \
43 TIFFWriteBufferSetup((tif), NULL((void*)0), (tmsize_t) -1))
44
45static int TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module);
46static int TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc);
47
48int
49TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
50{
51 static const char module[] = "TIFFWriteScanline";
52 register TIFFDirectory *td;
53 int status, imagegrew = 0;
54 uint32 strip;
55
56 if (!WRITECHECKSTRIPS(tif, module)(((tif)->tif_flags&0x00040) || TIFFWriteCheck((tif),0,
module)))
57 return (-1);
58 /*
59 * Handle delayed allocation of data buffer. This
60 * permits it to be sized more intelligently (using
61 * directory information).
62 */
63 if (!BUFFERCHECK(tif)((((tif)->tif_flags & 0x00010) && tif->tif_rawdata
) || TIFFWriteBufferSetup((tif), ((void*)0), (tmsize_t) -1)))
64 return (-1);
65 tif->tif_flags |= TIFF_BUF4WRITE0x100000; /* not strictly sure this is right*/
66
67 td = &tif->tif_dir;
68 /*
69 * Extend image length if needed
70 * (but only for PlanarConfig=1).
71 */
72 if (row >= td->td_imagelength) { /* extend image */
73 if (td->td_planarconfig == PLANARCONFIG_SEPARATE2) {
74 TIFFErrorExt(tif->tif_clientdata, module,
75 "Can not change \"ImageLength\" when using separate planes");
76 return (-1);
77 }
78 td->td_imagelength = row+1;
79 imagegrew = 1;
80 }
81 /*
82 * Calculate strip and check for crossings.
83 */
84 if (td->td_planarconfig == PLANARCONFIG_SEPARATE2) {
85 if (sample >= td->td_samplesperpixel) {
86 TIFFErrorExt(tif->tif_clientdata, module,
87 "%lu: Sample out of range, max %lu",
88 (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
89 return (-1);
90 }
91 strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
92 } else
93 strip = row / td->td_rowsperstrip;
94 /*
95 * Check strip array to make sure there's space. We don't support
96 * dynamically growing files that have data organized in separate
97 * bitplanes because it's too painful. In that case we require that
98 * the imagelength be set properly before the first write (so that the
99 * strips array will be fully allocated above).
100 */
101 if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module))
102 return (-1);
103 if (strip != tif->tif_curstrip) {
104 /*
105 * Changing strips -- flush any data present.
106 */
107 if (!TIFFFlushData(tif))
108 return (-1);
109 tif->tif_curstrip = strip;
110 /*
111 * Watch out for a growing image. The value of strips/image
112 * will initially be 1 (since it can't be deduced until the
113 * imagelength is known).
114 */
115 if (strip >= td->td_stripsperimage && imagegrew)
116 td->td_stripsperimage =
117 TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip)(((uint32)td->td_imagelength < (0xffffffff - (uint32)(td
->td_rowsperstrip-1))) ? ((((uint32)(td->td_imagelength
))+(((uint32)(td->td_rowsperstrip))-1))/((uint32)(td->td_rowsperstrip
))) : 0U);
118 tif->tif_row =
119 (strip % td->td_stripsperimage) * td->td_rowsperstrip;
120 if ((tif->tif_flags & TIFF_CODERSETUP0x00020) == 0) {
121 if (!(*tif->tif_setupencode)(tif))
122 return (-1);
123 tif->tif_flags |= TIFF_CODERSETUP0x00020;
124 }
125
126 tif->tif_rawcc = 0;
127 tif->tif_rawcp = tif->tif_rawdata;
128
129 if( td->td_stripbytecount[strip] > 0 )
130 {
131 /* if we are writing over existing tiles, zero length */
132 td->td_stripbytecount[strip] = 0;
133
134 /* this forces TIFFAppendToStrip() to do a seek */
135 tif->tif_curoff = 0;
136 }
137
138 if (!(*tif->tif_preencode)(tif, sample))
139 return (-1);
140 tif->tif_flags |= TIFF_POSTENCODE0x01000;
141 }
142 /*
143 * Ensure the write is either sequential or at the
144 * beginning of a strip (or that we can randomly
145 * access the data -- i.e. no encoding).
146 */
147 if (row != tif->tif_row) {
148 if (row < tif->tif_row) {
149 /*
150 * Moving backwards within the same strip:
151 * backup to the start and then decode
152 * forward (below).
153 */
154 tif->tif_row = (strip % td->td_stripsperimage) *
155 td->td_rowsperstrip;
156 tif->tif_rawcp = tif->tif_rawdata;
157 }
158 /*
159 * Seek forward to the desired row.
160 */
161 if (!(*tif->tif_seek)(tif, row - tif->tif_row))
162 return (-1);
163 tif->tif_row = row;
164 }
165
166 /* swab if needed - note that source buffer will be altered */
167 tif->tif_postdecode( tif, (uint8*) buf, tif->tif_scanlinesize );
168
169 status = (*tif->tif_encoderow)(tif, (uint8*) buf,
170 tif->tif_scanlinesize, sample);
171
172 /* we are now poised at the beginning of the next row */
173 tif->tif_row = row + 1;
174 return (status);
175}
176
177/*
178 * Encode the supplied data and write it to the
179 * specified strip.
180 *
181 * NB: Image length must be setup before writing.
182 */
183tmsize_t
184TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
185{
186 static const char module[] = "TIFFWriteEncodedStrip";
187 TIFFDirectory *td = &tif->tif_dir;
188 uint16 sample;
189
190 if (!WRITECHECKSTRIPS(tif, module)(((tif)->tif_flags&0x00040) || TIFFWriteCheck((tif),0,
module)))
191 return ((tmsize_t) -1);
192 /*
193 * Check strip array to make sure there's space.
194 * We don't support dynamically growing files that
195 * have data organized in separate bitplanes because
196 * it's too painful. In that case we require that
197 * the imagelength be set properly before the first
198 * write (so that the strips array will be fully
199 * allocated above).
200 */
201 if (strip >= td->td_nstrips) {
202 if (td->td_planarconfig == PLANARCONFIG_SEPARATE2) {
203 TIFFErrorExt(tif->tif_clientdata, module,
204 "Can not grow image by strips when using separate planes");
205 return ((tmsize_t) -1);
206 }
207 if (!TIFFGrowStrips(tif, 1, module))
208 return ((tmsize_t) -1);
209 td->td_stripsperimage =
210 TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip)(((uint32)td->td_imagelength < (0xffffffff - (uint32)(td
->td_rowsperstrip-1))) ? ((((uint32)(td->td_imagelength
))+(((uint32)(td->td_rowsperstrip))-1))/((uint32)(td->td_rowsperstrip
))) : 0U);
211 }
212 /*
213 * Handle delayed allocation of data buffer. This
214 * permits it to be sized according to the directory
215 * info.
216 */
217 if (!BUFFERCHECK(tif)((((tif)->tif_flags & 0x00010) && tif->tif_rawdata
) || TIFFWriteBufferSetup((tif), ((void*)0), (tmsize_t) -1)))
218 return ((tmsize_t) -1);
219
220 tif->tif_flags |= TIFF_BUF4WRITE0x100000;
221 tif->tif_curstrip = strip;
222
223 tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
224 if ((tif->tif_flags & TIFF_CODERSETUP0x00020) == 0) {
225 if (!(*tif->tif_setupencode)(tif))
226 return ((tmsize_t) -1);
227 tif->tif_flags |= TIFF_CODERSETUP0x00020;
228 }
229
230 tif->tif_rawcc = 0;
231 tif->tif_rawcp = tif->tif_rawdata;
232
233 if( td->td_stripbytecount[strip] > 0 )
234 {
235 /* Force TIFFAppendToStrip() to consider placing data at end
236 of file. */
237 tif->tif_curoff = 0;
238 }
239
240 tif->tif_flags &= ~TIFF_POSTENCODE0x01000;
241 sample = (uint16)(strip / td->td_stripsperimage);
242 if (!(*tif->tif_preencode)(tif, sample))
243 return ((tmsize_t) -1);
244
245 /* swab if needed - note that source buffer will be altered */
246 tif->tif_postdecode( tif, (uint8*) data, cc );
247
248 if (!(*tif->tif_encodestrip)(tif, (uint8*) data, cc, sample))
249 return (0);
250 if (!(*tif->tif_postencode)(tif))
251 return ((tmsize_t) -1);
252 if (!isFillOrder(tif, td->td_fillorder)(((tif)->tif_flags & (td->td_fillorder)) != 0) &&
253 (tif->tif_flags & TIFF_NOBITREV0x00100) == 0)
254 TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
255 if (tif->tif_rawcc > 0 &&
256 !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
257 return ((tmsize_t) -1);
258 tif->tif_rawcc = 0;
259 tif->tif_rawcp = tif->tif_rawdata;
260 return (cc);
261}
262
263/*
264 * Write the supplied data to the specified strip.
265 *
266 * NB: Image length must be setup before writing.
267 */
268tmsize_t
269TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
270{
271 static const char module[] = "TIFFWriteRawStrip";
272 TIFFDirectory *td = &tif->tif_dir;
273
274 if (!WRITECHECKSTRIPS(tif, module)(((tif)->tif_flags&0x00040) || TIFFWriteCheck((tif),0,
module)))
1
Taking false branch
→
275 return ((tmsize_t) -1);
276 /*
277 * Check strip array to make sure there's space.
278 * We don't support dynamically growing files that
279 * have data organized in separate bitplanes because
280 * it's too painful. In that case we require that
281 * the imagelength be set properly before the first
282 * write (so that the strips array will be fully
283 * allocated above).
284 */
285 if (strip >= td->td_nstrips) {
2
←
Taking true branch
→
286 if (td->td_planarconfig == PLANARCONFIG_SEPARATE2) {
3
←
Taking false branch
→
287 TIFFErrorExt(tif->tif_clientdata, module,
288 "Can not grow image by strips when using separate planes");
289 return ((tmsize_t) -1);
290 }
291 /*
292 * Watch out for a growing image. The value of
293 * strips/image will initially be 1 (since it
294 * can't be deduced until the imagelength is known).
295 */
296 if (strip >= td->td_stripsperimage)
4
←
Taking true branch
→
297 td->td_stripsperimage =
5
←
The value 0 is assigned to field 'td_stripsperimage'
→
298 TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip)(((uint32)td->td_imagelength < (0xffffffff - (uint32)(td
->td_rowsperstrip-1))) ? ((((uint32)(td->td_imagelength
))+(((uint32)(td->td_rowsperstrip))-1))/((uint32)(td->td_rowsperstrip
))) : 0U);
299 if (!TIFFGrowStrips(tif, 1, module))
6
←
Calling 'TIFFGrowStrips'
→
11
←
Returning from 'TIFFGrowStrips'
→
12
←
Taking false branch
→
300 return ((tmsize_t) -1);
301 }
302 tif->tif_curstrip = strip;
303 tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
13
←
Division by zero
304 return (TIFFAppendToStrip(tif, strip, (uint8*) data, cc) ?
305 cc : (tmsize_t) -1);
306}
307
308/*
309 * Write and compress a tile of data. The
310 * tile is selected by the (x,y,z,s) coordinates.
311 */
312tmsize_t
313TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s)
314{
315 if (!TIFFCheckTile(tif, x, y, z, s))
316 return ((tmsize_t)(-1));
317 /*
318 * NB: A tile size of -1 is used instead of tif_tilesize knowing
319 * that TIFFWriteEncodedTile will clamp this to the tile size.
320 * This is done because the tile size may not be defined until
321 * after the output buffer is setup in TIFFWriteBufferSetup.
322 */
323 return (TIFFWriteEncodedTile(tif,
324 TIFFComputeTile(tif, x, y, z, s), buf, (tmsize_t)(-1)));
325}
326
327/*
328 * Encode the supplied data and write it to the
329 * specified tile. There must be space for the
330 * data. The function clamps individual writes
331 * to a tile to the tile size, but does not (and
332 * can not) check that multiple writes to the same
333 * tile do not write more than tile size data.
334 *
335 * NB: Image length must be setup before writing; this
336 * interface does not support automatically growing
337 * the image on each write (as TIFFWriteScanline does).
338 */
339tmsize_t
340TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
341{
342 static const char module[] = "TIFFWriteEncodedTile";
343 TIFFDirectory *td;
344 uint16 sample;
345
346 if (!WRITECHECKTILES(tif, module)(((tif)->tif_flags&0x00040) || TIFFWriteCheck((tif),1,
module)))
347 return ((tmsize_t)(-1));
348 td = &tif->tif_dir;
349 if (tile >= td->td_nstrips) {
350 TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
351 (unsigned long) tile, (unsigned long) td->td_nstrips);
352 return ((tmsize_t)(-1));
353 }
354 /*
355 * Handle delayed allocation of data buffer. This
356 * permits it to be sized more intelligently (using
357 * directory information).
358 */
359 if (!BUFFERCHECK(tif)((((tif)->tif_flags & 0x00010) && tif->tif_rawdata
) || TIFFWriteBufferSetup((tif), ((void*)0), (tmsize_t) -1)))
360 return ((tmsize_t)(-1));
361
362 tif->tif_flags |= TIFF_BUF4WRITE0x100000;
363 tif->tif_curtile = tile;
364
365 tif->tif_rawcc = 0;
366 tif->tif_rawcp = tif->tif_rawdata;
367
368 if( td->td_stripbytecount[tile] > 0 )
369 {
370 /* Force TIFFAppendToStrip() to consider placing data at end
371 of file. */
372 tif->tif_curoff = 0;
373 }
374
375 /*
376 * Compute tiles per row & per column to compute
377 * current row and column
378 */
379 tif->tif_row = (tile % TIFFhowmany_32(td->td_imagelength, td->td_tilelength)(((uint32)td->td_imagelength < (0xffffffff - (uint32)(td
->td_tilelength-1))) ? ((((uint32)(td->td_imagelength))
+(((uint32)(td->td_tilelength))-1))/((uint32)(td->td_tilelength
))) : 0U))
380 * td->td_tilelength;
381 tif->tif_col = (tile % TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth)(((uint32)td->td_imagewidth < (0xffffffff - (uint32)(td
->td_tilewidth-1))) ? ((((uint32)(td->td_imagewidth))+(
((uint32)(td->td_tilewidth))-1))/((uint32)(td->td_tilewidth
))) : 0U))
382 * td->td_tilewidth;
383
384 if ((tif->tif_flags & TIFF_CODERSETUP0x00020) == 0) {
385 if (!(*tif->tif_setupencode)(tif))
386 return ((tmsize_t)(-1));
387 tif->tif_flags |= TIFF_CODERSETUP0x00020;
388 }
389 tif->tif_flags &= ~TIFF_POSTENCODE0x01000;
390 sample = (uint16)(tile/td->td_stripsperimage);
391 if (!(*tif->tif_preencode)(tif, sample))
392 return ((tmsize_t)(-1));
393 /*
394 * Clamp write amount to the tile size. This is mostly
395 * done so that callers can pass in some large number
396 * (e.g. -1) and have the tile size used instead.
397 */
398 if ( cc < 1 || cc > tif->tif_tilesize)
399 cc = tif->tif_tilesize;
400
401 /* swab if needed - note that source buffer will be altered */
402 tif->tif_postdecode( tif, (uint8*) data, cc );
403
404 if (!(*tif->tif_encodetile)(tif, (uint8*) data, cc, sample))
405 return (0);
406 if (!(*tif->tif_postencode)(tif))
407 return ((tmsize_t)(-1));
408 if (!isFillOrder(tif, td->td_fillorder)(((tif)->tif_flags & (td->td_fillorder)) != 0) &&
409 (tif->tif_flags & TIFF_NOBITREV0x00100) == 0)
410 TIFFReverseBits((uint8*)tif->tif_rawdata, tif->tif_rawcc);
411 if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
412 tif->tif_rawdata, tif->tif_rawcc))
413 return ((tmsize_t)(-1));
414 tif->tif_rawcc = 0;
415 tif->tif_rawcp = tif->tif_rawdata;
416 return (cc);
417}
418
419/*
420 * Write the supplied data to the specified strip.
421 * There must be space for the data; we don't check
422 * if strips overlap!
423 *
424 * NB: Image length must be setup before writing; this
425 * interface does not support automatically growing
426 * the image on each write (as TIFFWriteScanline does).
427 */
428tmsize_t
429TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
430{
431 static const char module[] = "TIFFWriteRawTile";
432
433 if (!WRITECHECKTILES(tif, module)(((tif)->tif_flags&0x00040) || TIFFWriteCheck((tif),1,
module)))
434 return ((tmsize_t)(-1));
435 if (tile >= tif->tif_dir.td_nstrips) {
436 TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
437 (unsigned long) tile,
438 (unsigned long) tif->tif_dir.td_nstrips);
439 return ((tmsize_t)(-1));
440 }
441 return (TIFFAppendToStrip(tif, tile, (uint8*) data, cc) ?
442 cc : (tmsize_t)(-1));
443}
444
445#define isUnspecified(tif, f) \
446 (TIFFFieldSet(tif,f)(((tif)->tif_dir.td_fieldsset[(f)/32]) & (((unsigned long
)1L)<<((f)&0x1f))) && (tif)->tif_dir.td_imagelength == 0)
447
448int
449TIFFSetupStrips(TIFF* tif)
450{
451 TIFFDirectory* td = &tif->tif_dir;
452
453 if (isTiled(tif)(((tif)->tif_flags & 0x00400) != 0))
454 td->td_stripsperimage =
455 isUnspecified(tif, FIELD_TILEDIMENSIONS2) ?
456 td->td_samplesperpixel : TIFFNumberOfTiles(tif);
457 else
458 td->td_stripsperimage =
459 isUnspecified(tif, FIELD_ROWSPERSTRIP17) ?
460 td->td_samplesperpixel : TIFFNumberOfStrips(tif);
461 td->td_nstrips = td->td_stripsperimage;
462 if (td->td_planarconfig == PLANARCONFIG_SEPARATE2)
463 td->td_stripsperimage /= td->td_samplesperpixel;
464 td->td_stripoffset = (uint64 *)
465 _TIFFmalloc(td->td_nstrips * sizeof (uint64));
466 td->td_stripbytecount = (uint64 *)
467 _TIFFmalloc(td->td_nstrips * sizeof (uint64));
468 if (td->td_stripoffset == NULL((void*)0) || td->td_stripbytecount == NULL((void*)0))
469 return (0);
470 /*
471 * Place data at the end-of-file
472 * (by setting offsets to zero).
473 */
474 _TIFFmemset(td->td_stripoffset, 0, td->td_nstrips*sizeof (uint64));
475 _TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint64));
476 TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS)(((tif)->tif_dir.td_fieldsset[(25)/32]) |= (((unsigned long
)1L)<<((25)&0x1f)));
477 TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS)(((tif)->tif_dir.td_fieldsset[(24)/32]) |= (((unsigned long
)1L)<<((24)&0x1f)));
478 return (1);
479}
480#undef isUnspecified
481
482/*
483 * Verify file is writable and that the directory
484 * information is setup properly. In doing the latter
485 * we also "freeze" the state of the directory so
486 * that important information is not changed.
487 */
488int
489TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
490{
491 if (tif->tif_mode == O_RDONLY00) {
492 TIFFErrorExt(tif->tif_clientdata, module, "File not open for writing");
493 return (0);
494 }
495 if (tiles ^ isTiled(tif)(((tif)->tif_flags & 0x00400) != 0)) {
496 TIFFErrorExt(tif->tif_clientdata, module, tiles ?
497 "Can not write tiles to a stripped image" :
498 "Can not write scanlines to a tiled image");
499 return (0);
500 }
501
502 _TIFFFillStriles( tif );
503
504 /*
505 * On the first write verify all the required information
506 * has been setup and initialize any data structures that
507 * had to wait until directory information was set.
508 * Note that a lot of our work is assumed to remain valid
509 * because we disallow any of the important parameters
510 * from changing after we start writing (i.e. once
511 * TIFF_BEENWRITING is set, TIFFSetField will only allow
512 * the image's length to be changed).
513 */
514 if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)(((tif)->tif_dir.td_fieldsset[(1)/32]) & (((unsigned long
)1L)<<((1)&0x1f)))) {
515 TIFFErrorExt(tif->tif_clientdata, module,
516 "Must set \"ImageWidth\" before writing data");
517 return (0);
518 }
519 if (tif->tif_dir.td_samplesperpixel == 1) {
520 /*
521 * Planarconfiguration is irrelevant in case of single band
522 * images and need not be included. We will set it anyway,
523 * because this field is used in other parts of library even
524 * in the single band case.
525 */
526 if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)(((tif)->tif_dir.td_fieldsset[(20)/32]) & (((unsigned long
)1L)<<((20)&0x1f))))
527 tif->tif_dir.td_planarconfig = PLANARCONFIG_CONTIG1;
528 } else {
529 if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)(((tif)->tif_dir.td_fieldsset[(20)/32]) & (((unsigned long
)1L)<<((20)&0x1f)))) {
530 TIFFErrorExt(tif->tif_clientdata, module,
531 "Must set \"PlanarConfiguration\" before writing data");
532 return (0);
533 }
534 }
535 if (tif->tif_dir.td_stripoffset == NULL((void*)0) && !TIFFSetupStrips(tif)) {
536 tif->tif_dir.td_nstrips = 0;
537 TIFFErrorExt(tif->tif_clientdata, module, "No space for %s arrays",
538 isTiled(tif)(((tif)->tif_flags & 0x00400) != 0) ? "tile" : "strip");
539 return (0);
540 }
541 if (isTiled(tif)(((tif)->tif_flags & 0x00400) != 0))
542 {
543 tif->tif_tilesize = TIFFTileSize(tif);
544 if (tif->tif_tilesize == 0)
545 return (0);
546 }
547 else
548 tif->tif_tilesize = (tmsize_t)(-1);
549 tif->tif_scanlinesize = TIFFScanlineSize(tif);
550 if (tif->tif_scanlinesize == 0)
551 return (0);
552 tif->tif_flags |= TIFF_BEENWRITING0x00040;
553 return (1);
554}
555
556/*
557 * Setup the raw data buffer used for encoding.
558 */
559int
560TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_t size)
561{
562 static const char module[] = "TIFFWriteBufferSetup";
563
564 if (tif->tif_rawdata) {
565 if (tif->tif_flags & TIFF_MYBUFFER0x00200) {
566 _TIFFfree(tif->tif_rawdata);
567 tif->tif_flags &= ~TIFF_MYBUFFER0x00200;
568 }
569 tif->tif_rawdata = NULL((void*)0);
570 }
571 if (size == (tmsize_t)(-1)) {
572 size = (isTiled(tif)(((tif)->tif_flags & 0x00400) != 0) ?
573 tif->tif_tilesize : TIFFStripSize(tif));
574 /*
575 * Make raw data buffer at least 8K
576 */
577 if (size < 8*1024)
578 size = 8*1024;
579 bp = NULL((void*)0); /* NB: force malloc */
580 }
581 if (bp == NULL((void*)0)) {
582 bp = _TIFFmalloc(size);
583 if (bp == NULL((void*)0)) {
584 TIFFErrorExt(tif->tif_clientdata, module, "No space for output buffer");
585 return (0);
586 }
587 tif->tif_flags |= TIFF_MYBUFFER0x00200;
588 } else
589 tif->tif_flags &= ~TIFF_MYBUFFER0x00200;
590 tif->tif_rawdata = (uint8*) bp;
591 tif->tif_rawdatasize = size;
592 tif->tif_rawcc = 0;
593 tif->tif_rawcp = tif->tif_rawdata;
594 tif->tif_flags |= TIFF_BUFFERSETUP0x00010;
595 return (1);
596}
597
598/*
599 * Grow the strip data structures by delta strips.
600 */
601static int
602TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module)
603{
604 TIFFDirectory *td = &tif->tif_dir;
605 uint64* new_stripoffset;
606 uint64* new_stripbytecount;
607
608 assert(td->td_planarconfig == PLANARCONFIG_CONTIG)((td->td_planarconfig == 1) ? (void) (0) : __assert_fail (
"td->td_planarconfig == 1", "tif_write.c", 608, __PRETTY_FUNCTION__
));
7
←
Within the expansion of the macro 'assert':
→
609 new_stripoffset = (uint64*)_TIFFrealloc(td->td_stripoffset,
610 (td->td_nstrips + delta) * sizeof (uint64));
611 new_stripbytecount = (uint64*)_TIFFrealloc(td->td_stripbytecount,
612 (td->td_nstrips + delta) * sizeof (uint64));
613 if (new_stripoffset == NULL((void*)0) || new_stripbytecount == NULL((void*)0)) {
8
←
Assuming 'new_stripoffset' is not equal to null
→
9
←
Assuming 'new_stripbytecount' is not equal to null
→
10
←
Taking false branch
→
614 if (new_stripoffset)
615 _TIFFfree(new_stripoffset);
616 if (new_stripbytecount)
617 _TIFFfree(new_stripbytecount);
618 td->td_nstrips = 0;
619 TIFFErrorExt(tif->tif_clientdata, module, "No space to expand strip arrays");
620 return (0);
621 }
622 td->td_stripoffset = new_stripoffset;
623 td->td_stripbytecount = new_stripbytecount;
624 _TIFFmemset(td->td_stripoffset + td->td_nstrips,
625 0, delta*sizeof (uint64));
626 _TIFFmemset(td->td_stripbytecount + td->td_nstrips,
627 0, delta*sizeof (uint64));
628 td->td_nstrips += delta;
629 tif->tif_flags |= TIFF_DIRTYDIRECT0x00008;
630
631 return (1);
632}
633
634/*
635 * Append the data to the specified strip.
636 */
637static int
638TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
639{
640 static const char module[] = "TIFFAppendToStrip";
641 TIFFDirectory *td = &tif->tif_dir;
642 uint64 m;
643 int64 old_byte_count = -1;
644
645 if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
646 assert(td->td_nstrips > 0)((td->td_nstrips > 0) ? (void) (0) : __assert_fail ("td->td_nstrips > 0"
, "tif_write.c", 646, __PRETTY_FUNCTION__));
647
648 if( td->td_stripbytecount[strip] != 0
649 && td->td_stripoffset[strip] != 0
650 && td->td_stripbytecount[strip] >= (uint64) cc )
651 {
652 /*
653 * There is already tile data on disk, and the new tile
654 * data we have will fit in the same space. The only
655 * aspect of this that is risky is that there could be
656 * more data to append to this strip before we are done
657 * depending on how we are getting called.
658 */
659 if (!SeekOK(tif, td->td_stripoffset[strip])(((*((tif))->tif_seekproc)(((tif))->tif_clientdata,((td
->td_stripoffset[strip])),(0)))==(td->td_stripoffset[strip
]))) {
660 TIFFErrorExt(tif->tif_clientdata, module,
661 "Seek error at scanline %lu",
662 (unsigned long)tif->tif_row);
663 return (0);
664 }
665 }
666 else
667 {
668 /*
669 * Seek to end of file, and set that as our location to
670 * write this strip.
671 */
672 td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END)((*(tif)->tif_seekproc)((tif)->tif_clientdata,(0),(2)));
673 tif->tif_flags |= TIFF_DIRTYSTRIP0x200000;
674 }
675
676 tif->tif_curoff = td->td_stripoffset[strip];
677
678 /*
679 * We are starting a fresh strip/tile, so set the size to zero.
680 */
681 old_byte_count = td->td_stripbytecount[strip];
682 td->td_stripbytecount[strip] = 0;
683 }
684
685 m = tif->tif_curoff+cc;
686 if (!(tif->tif_flags&TIFF_BIGTIFF0x80000))
687 m = (uint32)m;
688 if ((m<tif->tif_curoff)||(m<(uint64)cc))
689 {
690 TIFFErrorExt(tif->tif_clientdata, module, "Maximum TIFF file size exceeded");
691 return (0);
692 }
693 if (!WriteOK(tif, data, cc)(((*((tif))->tif_writeproc)(((tif))->tif_clientdata,((data
)),((cc))))==(cc))) {
694 TIFFErrorExt(tif->tif_clientdata, module, "Write error at scanline %lu",
695 (unsigned long) tif->tif_row);
696 return (0);
697 }
698 tif->tif_curoff = m;
699 td->td_stripbytecount[strip] += cc;
700
701 if( (int64) td->td_stripbytecount[strip] != old_byte_count )
702 tif->tif_flags |= TIFF_DIRTYSTRIP0x200000;
703
704 return (1);
705}
706
707/*
708 * Internal version of TIFFFlushData that can be
709 * called by ``encodestrip routines'' w/o concern
710 * for infinite recursion.
711 */
712int
713TIFFFlushData1(TIFF* tif)
714{
715 if (tif->tif_rawcc > 0 && tif->tif_flags & TIFF_BUF4WRITE0x100000 ) {
716 if (!isFillOrder(tif, tif->tif_dir.td_fillorder)(((tif)->tif_flags & (tif->tif_dir.td_fillorder)) !=
0) &&
717 (tif->tif_flags & TIFF_NOBITREV0x00100) == 0)
718 TIFFReverseBits((uint8*)tif->tif_rawdata,
719 tif->tif_rawcc);
720 if (!TIFFAppendToStrip(tif,
721 isTiled(tif)(((tif)->tif_flags & 0x00400) != 0) ? tif->tif_curtile : tif->tif_curstrip,
722 tif->tif_rawdata, tif->tif_rawcc))
723 return (0);
724 tif->tif_rawcc = 0;
725 tif->tif_rawcp = tif->tif_rawdata;
726 }
727 return (1);
728}
729
730/*
731 * Set the current write offset. This should only be
732 * used to set the offset to a known previous location
733 * (very carefully), or to 0 so that the next write gets
734 * appended to the end of the file.
735 */
736void
737TIFFSetWriteOffset(TIFF* tif, toff_t off)
738{
739 tif->tif_curoff = off;
740}
741
742/* vim: set ts=8 sts=8 sw=8 noet: */
743/*
744 * Local Variables:
745 * mode: c
746 * c-basic-offset: 8
747 * fill-column: 78
748 * End:
749 */