Line data Source code
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 : * Scanline-oriented Write Support
29 : */
30 : #include "tiffiop.h"
31 : #include <stdio.h>
32 :
33 : #define STRIPINCR 20 /* expansion factor on strip array */
34 :
35 : #define WRITECHECKSTRIPS(tif, module) \
36 : (((tif)->tif_flags & TIFF_BEENWRITING) || TIFFWriteCheck((tif), 0, module))
37 : #define WRITECHECKTILES(tif, module) \
38 : (((tif)->tif_flags & TIFF_BEENWRITING) || TIFFWriteCheck((tif), 1, module))
39 : #define BUFFERCHECK(tif) \
40 : ((((tif)->tif_flags & TIFF_BUFFERSETUP) && tif->tif_rawdata) || \
41 : TIFFWriteBufferSetup((tif), NULL, (tmsize_t)-1))
42 :
43 : static int TIFFGrowStrips(TIFF *tif, uint32_t delta, const char *module);
44 : static int TIFFAppendToStrip(TIFF *tif, uint32_t strip, uint8_t *data,
45 : tmsize_t cc);
46 :
47 57252 : int TIFFWriteScanline(TIFF *tif, void *buf, uint32_t row, uint16_t sample)
48 : {
49 : static const char module[] = "TIFFWriteScanline";
50 : register TIFFDirectory *td;
51 57252 : int status, imagegrew = 0;
52 : uint32_t strip;
53 :
54 57252 : if (!WRITECHECKSTRIPS(tif, module))
55 0 : return (-1);
56 : /*
57 : * Handle delayed allocation of data buffer. This
58 : * permits it to be sized more intelligently (using
59 : * directory information).
60 : */
61 57252 : if (!BUFFERCHECK(tif))
62 0 : return (-1);
63 57252 : tif->tif_flags |= TIFF_BUF4WRITE; /* not strictly sure this is right*/
64 :
65 57252 : td = &tif->tif_dir;
66 : /*
67 : * Extend image length if needed
68 : * (but only for PlanarConfig=1).
69 : */
70 57252 : if (row >= td->td_imagelength)
71 : { /* extend image */
72 0 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
73 : {
74 0 : TIFFErrorExtR(
75 : tif, module,
76 : "Can not change \"ImageLength\" when using separate planes");
77 0 : return (-1);
78 : }
79 0 : td->td_imagelength = row + 1;
80 0 : imagegrew = 1;
81 : }
82 : /*
83 : * Calculate strip and check for crossings.
84 : */
85 57252 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
86 : {
87 15000 : if (sample >= td->td_samplesperpixel)
88 : {
89 0 : TIFFErrorExtR(tif, module, "%lu: Sample out of range, max %lu",
90 : (unsigned long)sample,
91 0 : (unsigned long)td->td_samplesperpixel);
92 0 : return (-1);
93 : }
94 15000 : strip = sample * td->td_stripsperimage + row / td->td_rowsperstrip;
95 : }
96 : else
97 42252 : strip = row / td->td_rowsperstrip;
98 : /*
99 : * Check strip array to make sure there's space. We don't support
100 : * dynamically growing files that have data organized in separate
101 : * bitplanes because it's too painful. In that case we require that
102 : * the imagelength be set properly before the first write (so that the
103 : * strips array will be fully allocated above).
104 : */
105 57252 : if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module))
106 0 : return (-1);
107 57252 : if (strip != tif->tif_curstrip)
108 : {
109 : /*
110 : * Changing strips -- flush any data present.
111 : */
112 11 : if (!TIFFFlushData(tif))
113 0 : return (-1);
114 11 : tif->tif_curstrip = strip;
115 : /*
116 : * Watch out for a growing image. The value of strips/image
117 : * will initially be 1 (since it can't be deduced until the
118 : * imagelength is known).
119 : */
120 11 : if (strip >= td->td_stripsperimage && imagegrew)
121 0 : td->td_stripsperimage =
122 0 : TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip);
123 11 : if (td->td_stripsperimage == 0)
124 : {
125 0 : TIFFErrorExtR(tif, module, "Zero strips per image");
126 0 : return (-1);
127 : }
128 11 : tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
129 11 : if ((tif->tif_flags & TIFF_CODERSETUP) == 0)
130 : {
131 9 : if (!(*tif->tif_setupencode)(tif))
132 0 : return (-1);
133 9 : tif->tif_flags |= TIFF_CODERSETUP;
134 : }
135 :
136 11 : tif->tif_rawcc = 0;
137 11 : tif->tif_rawcp = tif->tif_rawdata;
138 :
139 : /* this informs TIFFAppendToStrip() we have changed strip */
140 11 : tif->tif_curoff = 0;
141 :
142 11 : if (!(*tif->tif_preencode)(tif, sample))
143 0 : return (-1);
144 11 : tif->tif_flags |= TIFF_POSTENCODE;
145 : }
146 : /*
147 : * Ensure the write is either sequential or at the
148 : * beginning of a strip (or that we can randomly
149 : * access the data -- i.e. no encoding).
150 : */
151 57252 : if (row != tif->tif_row)
152 : {
153 0 : if (row < tif->tif_row)
154 : {
155 : /*
156 : * Moving backwards within the same strip:
157 : * backup to the start and then decode
158 : * forward (below).
159 : */
160 0 : tif->tif_row =
161 0 : (strip % td->td_stripsperimage) * td->td_rowsperstrip;
162 0 : tif->tif_rawcp = tif->tif_rawdata;
163 : }
164 : /*
165 : * Seek forward to the desired row.
166 : */
167 0 : if (!(*tif->tif_seek)(tif, row - tif->tif_row))
168 0 : return (-1);
169 0 : tif->tif_row = row;
170 : }
171 :
172 : /* swab if needed - note that source buffer will be altered */
173 57252 : tif->tif_postdecode(tif, (uint8_t *)buf, tif->tif_scanlinesize);
174 :
175 57252 : status = (*tif->tif_encoderow)(tif, (uint8_t *)buf, tif->tif_scanlinesize,
176 : sample);
177 :
178 : /* we are now poised at the beginning of the next row */
179 57252 : tif->tif_row = row + 1;
180 57252 : return (status);
181 : }
182 :
183 : /* Make sure that at the first attempt of rewriting a tile/strip, we will have
184 : */
185 : /* more bytes available in the output buffer than the previous byte count, */
186 : /* so that TIFFAppendToStrip() will detect the overflow when it is called the
187 : * first */
188 : /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
189 165811 : static int _TIFFReserveLargeEnoughWriteBuffer(TIFF *tif, uint32_t strip_or_tile)
190 : {
191 165811 : TIFFDirectory *td = &tif->tif_dir;
192 165811 : if (td->td_stripbytecount_p[strip_or_tile] > 0)
193 : {
194 : /* The +1 is to ensure at least one extra bytes */
195 : /* The +4 is because the LZW encoder flushes 4 bytes before the limit */
196 40329 : uint64_t safe_buffer_size =
197 40329 : (uint64_t)(td->td_stripbytecount_p[strip_or_tile] + 1 + 4);
198 40329 : if (tif->tif_rawdatasize <= (tmsize_t)safe_buffer_size)
199 : {
200 0 : if (!(TIFFWriteBufferSetup(
201 : tif, NULL,
202 0 : (tmsize_t)TIFFroundup_64(safe_buffer_size, 1024))))
203 0 : return 0;
204 : }
205 : }
206 165811 : return 1;
207 : }
208 :
209 : /*
210 : * Encode the supplied data and write it to the
211 : * specified strip.
212 : *
213 : * NB: Image length must be setup before writing.
214 : */
215 139402 : tmsize_t TIFFWriteEncodedStrip(TIFF *tif, uint32_t strip, void *data,
216 : tmsize_t cc)
217 : {
218 : static const char module[] = "TIFFWriteEncodedStrip";
219 139402 : TIFFDirectory *td = &tif->tif_dir;
220 : uint16_t sample;
221 :
222 139402 : if (!WRITECHECKSTRIPS(tif, module))
223 0 : return ((tmsize_t)-1);
224 : /*
225 : * Check strip array to make sure there's space.
226 : * We don't support dynamically growing files that
227 : * have data organized in separate bitplanes because
228 : * it's too painful. In that case we require that
229 : * the imagelength be set properly before the first
230 : * write (so that the strips array will be fully
231 : * allocated above).
232 : */
233 139400 : if (strip >= td->td_nstrips)
234 : {
235 0 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
236 : {
237 0 : TIFFErrorExtR(
238 : tif, module,
239 : "Can not grow image by strips when using separate planes");
240 0 : return ((tmsize_t)-1);
241 : }
242 0 : if (!TIFFGrowStrips(tif, 1, module))
243 0 : return ((tmsize_t)-1);
244 0 : td->td_stripsperimage =
245 0 : TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip);
246 : }
247 : /*
248 : * Handle delayed allocation of data buffer. This
249 : * permits it to be sized according to the directory
250 : * info.
251 : */
252 139400 : if (!BUFFERCHECK(tif))
253 0 : return ((tmsize_t)-1);
254 :
255 139409 : tif->tif_flags |= TIFF_BUF4WRITE;
256 :
257 139409 : tif->tif_curstrip = strip;
258 :
259 : /* this informs TIFFAppendToStrip() we have changed or reset strip */
260 139409 : tif->tif_curoff = 0;
261 :
262 139409 : if (!_TIFFReserveLargeEnoughWriteBuffer(tif, strip))
263 : {
264 0 : return ((tmsize_t)(-1));
265 : }
266 :
267 139432 : tif->tif_rawcc = 0;
268 139432 : tif->tif_rawcp = tif->tif_rawdata;
269 :
270 139432 : if (td->td_stripsperimage == 0)
271 : {
272 0 : TIFFErrorExtR(tif, module, "Zero strips per image");
273 0 : return ((tmsize_t)-1);
274 : }
275 :
276 139432 : tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
277 139432 : if ((tif->tif_flags & TIFF_CODERSETUP) == 0)
278 : {
279 31604 : if (!(*tif->tif_setupencode)(tif))
280 0 : return ((tmsize_t)-1);
281 31604 : tif->tif_flags |= TIFF_CODERSETUP;
282 : }
283 :
284 139432 : tif->tif_flags &= ~TIFF_POSTENCODE;
285 :
286 : /* shortcut to avoid an extra memcpy() */
287 139432 : if (td->td_compression == COMPRESSION_NONE)
288 : {
289 : /* swab if needed - note that source buffer will be altered */
290 113708 : tif->tif_postdecode(tif, (uint8_t *)data, cc);
291 :
292 113510 : if (!isFillOrder(tif, td->td_fillorder) &&
293 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
294 0 : TIFFReverseBits((uint8_t *)data, cc);
295 :
296 113588 : if (cc > 0 && !TIFFAppendToStrip(tif, strip, (uint8_t *)data, cc))
297 4 : return ((tmsize_t)-1);
298 113961 : return (cc);
299 : }
300 :
301 25724 : sample = (uint16_t)(strip / td->td_stripsperimage);
302 25724 : if (!(*tif->tif_preencode)(tif, sample))
303 2 : return ((tmsize_t)-1);
304 :
305 : /* swab if needed - note that source buffer will be altered */
306 25762 : tif->tif_postdecode(tif, (uint8_t *)data, cc);
307 :
308 25762 : if (!(*tif->tif_encodestrip)(tif, (uint8_t *)data, cc, sample))
309 0 : return ((tmsize_t)-1);
310 25763 : if (!(*tif->tif_postencode)(tif))
311 1 : return ((tmsize_t)-1);
312 25762 : if (!isFillOrder(tif, td->td_fillorder) &&
313 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
314 0 : TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
315 41062 : if (tif->tif_rawcc > 0 &&
316 15300 : !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
317 0 : return ((tmsize_t)-1);
318 25762 : tif->tif_rawcc = 0;
319 25762 : tif->tif_rawcp = tif->tif_rawdata;
320 25762 : return (cc);
321 : }
322 :
323 : /*
324 : * Write the supplied data to the specified strip.
325 : *
326 : * NB: Image length must be setup before writing.
327 : */
328 7366 : tmsize_t TIFFWriteRawStrip(TIFF *tif, uint32_t strip, void *data, tmsize_t cc)
329 : {
330 : static const char module[] = "TIFFWriteRawStrip";
331 7366 : TIFFDirectory *td = &tif->tif_dir;
332 :
333 7366 : if (!WRITECHECKSTRIPS(tif, module))
334 0 : return ((tmsize_t)-1);
335 : /*
336 : * Check strip array to make sure there's space.
337 : * We don't support dynamically growing files that
338 : * have data organized in separate bitplanes because
339 : * it's too painful. In that case we require that
340 : * the imagelength be set properly before the first
341 : * write (so that the strips array will be fully
342 : * allocated above).
343 : */
344 7366 : if (strip >= td->td_nstrips)
345 : {
346 0 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
347 : {
348 0 : TIFFErrorExtR(
349 : tif, module,
350 : "Can not grow image by strips when using separate planes");
351 0 : return ((tmsize_t)-1);
352 : }
353 : /*
354 : * Watch out for a growing image. The value of
355 : * strips/image will initially be 1 (since it
356 : * can't be deduced until the imagelength is known).
357 : */
358 0 : if (strip >= td->td_stripsperimage)
359 0 : td->td_stripsperimage =
360 0 : TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip);
361 0 : if (!TIFFGrowStrips(tif, 1, module))
362 0 : return ((tmsize_t)-1);
363 : }
364 :
365 7366 : if (tif->tif_curstrip != strip)
366 : {
367 7366 : tif->tif_curstrip = strip;
368 :
369 : /* this informs TIFFAppendToStrip() we have changed or reset strip */
370 7366 : tif->tif_curoff = 0;
371 : }
372 :
373 7366 : if (td->td_stripsperimage == 0)
374 : {
375 0 : TIFFErrorExtR(tif, module, "Zero strips per image");
376 0 : return ((tmsize_t)-1);
377 : }
378 7366 : tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
379 7366 : return (TIFFAppendToStrip(tif, strip, (uint8_t *)data, cc) ? cc
380 7366 : : (tmsize_t)-1);
381 : }
382 :
383 : /*
384 : * Write and compress a tile of data. The
385 : * tile is selected by the (x,y,z,s) coordinates.
386 : */
387 0 : tmsize_t TIFFWriteTile(TIFF *tif, void *buf, uint32_t x, uint32_t y, uint32_t z,
388 : uint16_t s)
389 : {
390 0 : if (!TIFFCheckTile(tif, x, y, z, s))
391 0 : return ((tmsize_t)(-1));
392 : /*
393 : * NB: A tile size of -1 is used instead of tif_tilesize knowing
394 : * that TIFFWriteEncodedTile will clamp this to the tile size.
395 : * This is done because the tile size may not be defined until
396 : * after the output buffer is setup in TIFFWriteBufferSetup.
397 : */
398 0 : return (TIFFWriteEncodedTile(tif, TIFFComputeTile(tif, x, y, z, s), buf,
399 : (tmsize_t)(-1)));
400 : }
401 :
402 : /*
403 : * Encode the supplied data and write it to the
404 : * specified tile. There must be space for the
405 : * data. The function clamps individual writes
406 : * to a tile to the tile size, but does not (and
407 : * can not) check that multiple writes to the same
408 : * tile do not write more than tile size data.
409 : *
410 : * NB: Image length must be setup before writing; this
411 : * interface does not support automatically growing
412 : * the image on each write (as TIFFWriteScanline does).
413 : */
414 26379 : tmsize_t TIFFWriteEncodedTile(TIFF *tif, uint32_t tile, void *data, tmsize_t cc)
415 : {
416 : static const char module[] = "TIFFWriteEncodedTile";
417 : TIFFDirectory *td;
418 : uint16_t sample;
419 : uint32_t howmany32;
420 :
421 26379 : if (!WRITECHECKTILES(tif, module))
422 0 : return ((tmsize_t)(-1));
423 26379 : td = &tif->tif_dir;
424 26379 : if (tile >= td->td_nstrips)
425 : {
426 0 : TIFFErrorExtR(tif, module, "Tile %lu out of range, max %lu",
427 0 : (unsigned long)tile, (unsigned long)td->td_nstrips);
428 0 : return ((tmsize_t)(-1));
429 : }
430 : /*
431 : * Handle delayed allocation of data buffer. This
432 : * permits it to be sized more intelligently (using
433 : * directory information).
434 : */
435 26379 : if (!BUFFERCHECK(tif))
436 0 : return ((tmsize_t)(-1));
437 :
438 26374 : tif->tif_flags |= TIFF_BUF4WRITE;
439 :
440 26374 : tif->tif_curtile = tile;
441 :
442 : /* this informs TIFFAppendToStrip() we have changed or reset tile */
443 26374 : tif->tif_curoff = 0;
444 :
445 26374 : if (!_TIFFReserveLargeEnoughWriteBuffer(tif, tile))
446 : {
447 0 : return ((tmsize_t)(-1));
448 : }
449 :
450 26373 : tif->tif_rawcc = 0;
451 26373 : tif->tif_rawcp = tif->tif_rawdata;
452 :
453 : /*
454 : * Compute tiles per row & per column to compute
455 : * current row and column
456 : */
457 26373 : howmany32 = TIFFhowmany_32(td->td_imagelength, td->td_tilelength);
458 26373 : if (howmany32 == 0)
459 : {
460 0 : TIFFErrorExtR(tif, module, "Zero tiles");
461 0 : return ((tmsize_t)(-1));
462 : }
463 26373 : tif->tif_row = (tile % howmany32) * td->td_tilelength;
464 26373 : howmany32 = TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth);
465 26373 : if (howmany32 == 0)
466 : {
467 0 : TIFFErrorExtR(tif, module, "Zero tiles");
468 0 : return ((tmsize_t)(-1));
469 : }
470 26373 : tif->tif_col = (tile % howmany32) * td->td_tilewidth;
471 :
472 26373 : if ((tif->tif_flags & TIFF_CODERSETUP) == 0)
473 : {
474 1096 : if (!(*tif->tif_setupencode)(tif))
475 0 : return ((tmsize_t)(-1));
476 1096 : tif->tif_flags |= TIFF_CODERSETUP;
477 : }
478 26373 : tif->tif_flags &= ~TIFF_POSTENCODE;
479 :
480 : /*
481 : * Clamp write amount to the tile size. This is mostly
482 : * done so that callers can pass in some large number
483 : * (e.g. -1) and have the tile size used instead.
484 : */
485 26373 : if (cc < 1 || cc > tif->tif_tilesize)
486 0 : cc = tif->tif_tilesize;
487 :
488 : /* shortcut to avoid an extra memcpy() */
489 26373 : if (td->td_compression == COMPRESSION_NONE)
490 : {
491 : /* swab if needed - note that source buffer will be altered */
492 17893 : tif->tif_postdecode(tif, (uint8_t *)data, cc);
493 :
494 17893 : if (!isFillOrder(tif, td->td_fillorder) &&
495 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
496 0 : TIFFReverseBits((uint8_t *)data, cc);
497 :
498 17893 : if (cc > 0 && !TIFFAppendToStrip(tif, tile, (uint8_t *)data, cc))
499 0 : return ((tmsize_t)-1);
500 17893 : return (cc);
501 : }
502 :
503 8480 : sample = (uint16_t)(tile / td->td_stripsperimage);
504 8480 : if (!(*tif->tif_preencode)(tif, sample))
505 0 : return ((tmsize_t)(-1));
506 : /* swab if needed - note that source buffer will be altered */
507 8484 : tif->tif_postdecode(tif, (uint8_t *)data, cc);
508 :
509 8482 : if (!(*tif->tif_encodetile)(tif, (uint8_t *)data, cc, sample))
510 0 : return ((tmsize_t)-1);
511 8486 : if (!(*tif->tif_postencode)(tif))
512 1 : return ((tmsize_t)(-1));
513 8484 : if (!isFillOrder(tif, td->td_fillorder) &&
514 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
515 0 : TIFFReverseBits((uint8_t *)tif->tif_rawdata, tif->tif_rawcc);
516 10483 : if (tif->tif_rawcc > 0 &&
517 2001 : !TIFFAppendToStrip(tif, tile, tif->tif_rawdata, tif->tif_rawcc))
518 12 : return ((tmsize_t)(-1));
519 8470 : tif->tif_rawcc = 0;
520 8470 : tif->tif_rawcp = tif->tif_rawdata;
521 8470 : return (cc);
522 : }
523 :
524 : /*
525 : * Write the supplied data to the specified strip.
526 : * There must be space for the data; we don't check
527 : * if strips overlap!
528 : *
529 : * NB: Image length must be setup before writing; this
530 : * interface does not support automatically growing
531 : * the image on each write (as TIFFWriteScanline does).
532 : */
533 25564 : tmsize_t TIFFWriteRawTile(TIFF *tif, uint32_t tile, void *data, tmsize_t cc)
534 : {
535 : static const char module[] = "TIFFWriteRawTile";
536 :
537 25564 : if (!WRITECHECKTILES(tif, module))
538 0 : return ((tmsize_t)(-1));
539 25564 : if (tile >= tif->tif_dir.td_nstrips)
540 : {
541 0 : TIFFErrorExtR(tif, module, "Tile %lu out of range, max %lu",
542 : (unsigned long)tile,
543 0 : (unsigned long)tif->tif_dir.td_nstrips);
544 0 : return ((tmsize_t)(-1));
545 : }
546 25564 : return (TIFFAppendToStrip(tif, tile, (uint8_t *)data, cc) ? cc
547 25564 : : (tmsize_t)(-1));
548 : }
549 :
550 : #define isUnspecified(tif, f) \
551 : (TIFFFieldSet(tif, f) && (tif)->tif_dir.td_imagelength == 0)
552 :
553 36726 : int TIFFSetupStrips(TIFF *tif)
554 : {
555 36726 : TIFFDirectory *td = &tif->tif_dir;
556 :
557 36726 : if (isTiled(tif))
558 4838 : td->td_stripsperimage = isUnspecified(tif, FIELD_TILEDIMENSIONS)
559 0 : ? td->td_samplesperpixel
560 4838 : : TIFFNumberOfTiles(tif);
561 : else
562 68607 : td->td_stripsperimage = isUnspecified(tif, FIELD_ROWSPERSTRIP)
563 0 : ? td->td_samplesperpixel
564 68612 : : TIFFNumberOfStrips(tif);
565 36721 : td->td_nstrips = td->td_stripsperimage;
566 : /* TIFFWriteDirectoryTagData has a limitation to 0x80000000U bytes */
567 73442 : if (td->td_nstrips >=
568 36721 : 0x80000000U / ((tif->tif_flags & TIFF_BIGTIFF) ? 0x8U : 0x4U))
569 : {
570 0 : TIFFErrorExtR(tif, "TIFFSetupStrips",
571 : "Too large Strip/Tile Offsets/ByteCounts arrays");
572 0 : return 0;
573 : }
574 36721 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
575 2360 : td->td_stripsperimage /= td->td_samplesperpixel;
576 73444 : td->td_stripoffset_p = (uint64_t *)_TIFFCheckMalloc(
577 36721 : tif, td->td_nstrips, sizeof(uint64_t), "for \"StripOffsets\" array");
578 73449 : td->td_stripbytecount_p = (uint64_t *)_TIFFCheckMalloc(
579 36723 : tif, td->td_nstrips, sizeof(uint64_t), "for \"StripByteCounts\" array");
580 36726 : if (td->td_stripoffset_p == NULL || td->td_stripbytecount_p == NULL)
581 0 : return (0);
582 : /*
583 : * Place data at the end-of-file
584 : * (by setting offsets to zero).
585 : */
586 36726 : _TIFFmemset(td->td_stripoffset_p, 0, td->td_nstrips * sizeof(uint64_t));
587 36725 : _TIFFmemset(td->td_stripbytecount_p, 0, td->td_nstrips * sizeof(uint64_t));
588 36725 : TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
589 36725 : TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
590 36725 : return (1);
591 : }
592 : #undef isUnspecified
593 :
594 : /*
595 : * Verify file is writable and that the directory
596 : * information is setup properly. In doing the latter
597 : * we also "freeze" the state of the directory so
598 : * that important information is not changed.
599 : */
600 43796 : int TIFFWriteCheck(TIFF *tif, int tiles, const char *module)
601 : {
602 43796 : if (tif->tif_mode == O_RDONLY)
603 : {
604 0 : TIFFErrorExtR(tif, module, "File not open for writing");
605 0 : return (0);
606 : }
607 43796 : if (tiles ^ isTiled(tif))
608 : {
609 0 : TIFFErrorExtR(tif, module,
610 : tiles ? "Can not write tiles to a striped image"
611 : : "Can not write scanlines to a tiled image");
612 0 : return (0);
613 : }
614 :
615 43796 : _TIFFFillStriles(tif);
616 :
617 : /*
618 : * On the first write verify all the required information
619 : * has been setup and initialize any data structures that
620 : * had to wait until directory information was set.
621 : * Note that a lot of our work is assumed to remain valid
622 : * because we disallow any of the important parameters
623 : * from changing after we start writing (i.e. once
624 : * TIFF_BEENWRITING is set, TIFFSetField will only allow
625 : * the image's length to be changed).
626 : */
627 43793 : if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS))
628 : {
629 1 : TIFFErrorExtR(tif, module,
630 : "Must set \"ImageWidth\" before writing data");
631 0 : return (0);
632 : }
633 43792 : if (tif->tif_dir.td_stripoffset_p == NULL && !TIFFSetupStrips(tif))
634 : {
635 0 : tif->tif_dir.td_nstrips = 0;
636 0 : TIFFErrorExtR(tif, module, "No space for %s arrays",
637 0 : isTiled(tif) ? "tile" : "strip");
638 0 : return (0);
639 : }
640 43795 : if (isTiled(tif))
641 : {
642 2884 : tif->tif_tilesize = TIFFTileSize(tif);
643 2884 : if (tif->tif_tilesize == 0)
644 0 : return (0);
645 : }
646 : else
647 40911 : tif->tif_tilesize = (tmsize_t)(-1);
648 43795 : tif->tif_scanlinesize = TIFFScanlineSize(tif);
649 43790 : if (tif->tif_scanlinesize == 0)
650 0 : return (0);
651 43790 : tif->tif_flags |= TIFF_BEENWRITING;
652 :
653 43790 : if (tif->tif_dir.td_stripoffset_entry.tdir_tag != 0 &&
654 7413 : tif->tif_dir.td_stripoffset_entry.tdir_count == 0 &&
655 0 : tif->tif_dir.td_stripoffset_entry.tdir_type == 0 &&
656 0 : tif->tif_dir.td_stripoffset_entry.tdir_offset.toff_long8 == 0 &&
657 0 : tif->tif_dir.td_stripbytecount_entry.tdir_tag != 0 &&
658 0 : tif->tif_dir.td_stripbytecount_entry.tdir_count == 0 &&
659 0 : tif->tif_dir.td_stripbytecount_entry.tdir_type == 0 &&
660 0 : tif->tif_dir.td_stripbytecount_entry.tdir_offset.toff_long8 == 0 &&
661 0 : !(tif->tif_flags & TIFF_DIRTYDIRECT))
662 : {
663 0 : TIFFForceStrileArrayWriting(tif);
664 : }
665 :
666 43792 : return (1);
667 : }
668 :
669 : /*
670 : * Setup the raw data buffer used for encoding.
671 : */
672 32785 : int TIFFWriteBufferSetup(TIFF *tif, void *bp, tmsize_t size)
673 : {
674 : static const char module[] = "TIFFWriteBufferSetup";
675 :
676 32785 : if (tif->tif_rawdata)
677 : {
678 14 : if (tif->tif_flags & TIFF_MYBUFFER)
679 : {
680 14 : _TIFFfreeExt(tif, tif->tif_rawdata);
681 14 : tif->tif_flags &= ~TIFF_MYBUFFER;
682 : }
683 14 : tif->tif_rawdata = NULL;
684 : }
685 32785 : if (size == (tmsize_t)(-1))
686 : {
687 32785 : size = (isTiled(tif) ? tif->tif_tilesize : TIFFStripSize(tif));
688 :
689 : /* Adds 10% margin for cases where compression would expand a bit */
690 32781 : if (size < TIFF_TMSIZE_T_MAX - size / 10)
691 32783 : size += size / 10;
692 : /*
693 : * Make raw data buffer at least 8K
694 : */
695 32781 : if (size < 8 * 1024)
696 24059 : size = 8 * 1024;
697 32781 : bp = NULL; /* NB: force malloc */
698 : }
699 32781 : if (bp == NULL)
700 : {
701 32780 : bp = _TIFFmallocExt(tif, size);
702 32786 : if (bp == NULL)
703 : {
704 0 : TIFFErrorExtR(tif, module, "No space for output buffer");
705 0 : return (0);
706 : }
707 32786 : tif->tif_flags |= TIFF_MYBUFFER;
708 : }
709 : else
710 1 : tif->tif_flags &= ~TIFF_MYBUFFER;
711 32787 : tif->tif_rawdata = (uint8_t *)bp;
712 32787 : tif->tif_rawdatasize = size;
713 32787 : tif->tif_rawcc = 0;
714 32787 : tif->tif_rawcp = tif->tif_rawdata;
715 32787 : tif->tif_flags |= TIFF_BUFFERSETUP;
716 32787 : return (1);
717 : }
718 :
719 : /*
720 : * Grow the strip data structures by delta strips.
721 : */
722 0 : static int TIFFGrowStrips(TIFF *tif, uint32_t delta, const char *module)
723 : {
724 0 : TIFFDirectory *td = &tif->tif_dir;
725 : uint64_t *new_stripoffset;
726 : uint64_t *new_stripbytecount;
727 :
728 0 : assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
729 0 : new_stripoffset = (uint64_t *)_TIFFreallocExt(
730 0 : tif, td->td_stripoffset_p, (td->td_nstrips + delta) * sizeof(uint64_t));
731 0 : new_stripbytecount = (uint64_t *)_TIFFreallocExt(
732 0 : tif, td->td_stripbytecount_p,
733 0 : (td->td_nstrips + delta) * sizeof(uint64_t));
734 0 : if (new_stripoffset == NULL || new_stripbytecount == NULL)
735 : {
736 0 : if (new_stripoffset)
737 0 : _TIFFfreeExt(tif, new_stripoffset);
738 0 : if (new_stripbytecount)
739 0 : _TIFFfreeExt(tif, new_stripbytecount);
740 0 : td->td_nstrips = 0;
741 0 : TIFFErrorExtR(tif, module, "No space to expand strip arrays");
742 0 : return (0);
743 : }
744 0 : td->td_stripoffset_p = new_stripoffset;
745 0 : td->td_stripbytecount_p = new_stripbytecount;
746 0 : _TIFFmemset(td->td_stripoffset_p + td->td_nstrips, 0,
747 0 : delta * sizeof(uint64_t));
748 0 : _TIFFmemset(td->td_stripbytecount_p + td->td_nstrips, 0,
749 0 : delta * sizeof(uint64_t));
750 0 : td->td_nstrips += delta;
751 0 : tif->tif_flags |= TIFF_DIRTYDIRECT;
752 :
753 0 : return (1);
754 : }
755 :
756 : /*
757 : * Append the data to the specified strip.
758 : */
759 198747 : static int TIFFAppendToStrip(TIFF *tif, uint32_t strip, uint8_t *data,
760 : tmsize_t cc)
761 : {
762 : static const char module[] = "TIFFAppendToStrip";
763 198747 : TIFFDirectory *td = &tif->tif_dir;
764 : uint64_t m;
765 198747 : int64_t old_byte_count = -1;
766 :
767 198747 : if (tif->tif_curoff == 0)
768 173846 : tif->tif_lastvalidoff = 0;
769 :
770 198747 : if (td->td_stripoffset_p[strip] == 0 || tif->tif_curoff == 0)
771 : {
772 198839 : assert(td->td_nstrips > 0);
773 :
774 198839 : if (td->td_stripbytecount_p[strip] != 0 &&
775 40799 : td->td_stripoffset_p[strip] != 0 &&
776 40825 : td->td_stripbytecount_p[strip] >= (uint64_t)cc)
777 : {
778 : /*
779 : * There is already tile data on disk, and the new tile
780 : * data we have will fit in the same space. The only
781 : * aspect of this that is risky is that there could be
782 : * more data to append to this strip before we are done
783 : * depending on how we are getting called.
784 : */
785 40784 : if (!SeekOK(tif, td->td_stripoffset_p[strip]))
786 : {
787 132 : TIFFErrorExtR(tif, module, "Seek error at scanline %lu",
788 132 : (unsigned long)tif->tif_row);
789 0 : return (0);
790 : }
791 :
792 40535 : tif->tif_lastvalidoff =
793 40535 : td->td_stripoffset_p[strip] + td->td_stripbytecount_p[strip];
794 : }
795 : else
796 : {
797 : /*
798 : * Seek to end of file, and set that as our location to
799 : * write this strip.
800 : */
801 158055 : td->td_stripoffset_p[strip] = TIFFSeekFile(tif, 0, SEEK_END);
802 158078 : tif->tif_flags |= TIFF_DIRTYSTRIP;
803 : }
804 :
805 198613 : tif->tif_curoff = td->td_stripoffset_p[strip];
806 :
807 : /*
808 : * We are starting a fresh strip/tile, so set the size to zero.
809 : */
810 198613 : old_byte_count = td->td_stripbytecount_p[strip];
811 198613 : td->td_stripbytecount_p[strip] = 0;
812 : }
813 :
814 198521 : m = tif->tif_curoff + cc;
815 198521 : if (!(tif->tif_flags & TIFF_BIGTIFF))
816 183767 : m = (uint32_t)m;
817 198521 : if ((m < tif->tif_curoff) || (m < (uint64_t)cc))
818 : {
819 0 : TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded");
820 0 : return (0);
821 : }
822 :
823 198895 : if (tif->tif_lastvalidoff != 0 && m > tif->tif_lastvalidoff &&
824 0 : td->td_stripbytecount_p[strip] > 0)
825 : {
826 : /* Ouch: we have detected that we are rewriting in place a strip/tile */
827 : /* with several calls to TIFFAppendToStrip(). The first call was with */
828 : /* a size smaller than the previous size of the strip/tile, so we */
829 : /* opted to rewrite in place, but a following call causes us to go */
830 : /* outsize of the strip/tile area, so we have to finally go for a */
831 : /* append-at-end-of-file strategy, and start by moving what we already
832 : */
833 : /* wrote. */
834 : tmsize_t tempSize;
835 : void *temp;
836 : uint64_t offsetRead;
837 : uint64_t offsetWrite;
838 0 : uint64_t toCopy = td->td_stripbytecount_p[strip];
839 :
840 0 : if (toCopy < 1024 * 1024)
841 0 : tempSize = (tmsize_t)toCopy;
842 : else
843 0 : tempSize = 1024 * 1024;
844 :
845 0 : offsetRead = td->td_stripoffset_p[strip];
846 0 : offsetWrite = TIFFSeekFile(tif, 0, SEEK_END);
847 :
848 0 : m = offsetWrite + toCopy + cc;
849 0 : if (!(tif->tif_flags & TIFF_BIGTIFF) && m != (uint32_t)m)
850 : {
851 0 : TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded");
852 0 : return (0);
853 : }
854 :
855 0 : temp = _TIFFmallocExt(tif, tempSize);
856 0 : if (temp == NULL)
857 : {
858 0 : TIFFErrorExtR(tif, module, "No space for output buffer");
859 0 : return (0);
860 : }
861 :
862 0 : tif->tif_flags |= TIFF_DIRTYSTRIP;
863 :
864 0 : td->td_stripoffset_p[strip] = offsetWrite;
865 0 : td->td_stripbytecount_p[strip] = 0;
866 :
867 : /* Move data written by previous calls to us at end of file */
868 0 : while (toCopy > 0)
869 : {
870 0 : if (!SeekOK(tif, offsetRead))
871 : {
872 0 : TIFFErrorExtR(tif, module, "Seek error");
873 0 : _TIFFfreeExt(tif, temp);
874 0 : return (0);
875 : }
876 0 : if (!ReadOK(tif, temp, tempSize))
877 : {
878 0 : TIFFErrorExtR(tif, module, "Cannot read");
879 0 : _TIFFfreeExt(tif, temp);
880 0 : return (0);
881 : }
882 0 : if (!SeekOK(tif, offsetWrite))
883 : {
884 0 : TIFFErrorExtR(tif, module, "Seek error");
885 0 : _TIFFfreeExt(tif, temp);
886 0 : return (0);
887 : }
888 0 : if (!WriteOK(tif, temp, tempSize))
889 : {
890 0 : TIFFErrorExtR(tif, module, "Cannot write");
891 0 : _TIFFfreeExt(tif, temp);
892 0 : return (0);
893 : }
894 0 : offsetRead += tempSize;
895 0 : offsetWrite += tempSize;
896 0 : td->td_stripbytecount_p[strip] += tempSize;
897 0 : toCopy -= tempSize;
898 : }
899 0 : _TIFFfreeExt(tif, temp);
900 :
901 : /* Append the data of this call */
902 0 : offsetWrite += cc;
903 0 : m = offsetWrite;
904 : }
905 :
906 198895 : if (!WriteOK(tif, data, cc))
907 : {
908 53 : TIFFErrorExtR(tif, module, "Write error at scanline %lu",
909 53 : (unsigned long)tif->tif_row);
910 40 : return (0);
911 : }
912 199025 : tif->tif_curoff = m;
913 199025 : td->td_stripbytecount_p[strip] += cc;
914 :
915 199025 : if ((int64_t)td->td_stripbytecount_p[strip] != old_byte_count)
916 158057 : tif->tif_flags |= TIFF_DIRTYSTRIP;
917 :
918 199025 : return (1);
919 : }
920 :
921 : /*
922 : * Internal version of TIFFFlushData that can be
923 : * called by ``encodestrip routines'' w/o concern
924 : * for infinite recursion.
925 : */
926 50900 : int TIFFFlushData1(TIFF *tif)
927 : {
928 50900 : if (tif->tif_rawcc > 0 && tif->tif_flags & TIFF_BUF4WRITE)
929 : {
930 16971 : if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
931 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
932 0 : TIFFReverseBits((uint8_t *)tif->tif_rawdata, tif->tif_rawcc);
933 16972 : if (!TIFFAppendToStrip(
934 16972 : tif, isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip,
935 : tif->tif_rawdata, tif->tif_rawcc))
936 : {
937 : /* We update those variables even in case of error since there's */
938 : /* code that doesn't really check the return code of this */
939 : /* function */
940 12 : tif->tif_rawcc = 0;
941 12 : tif->tif_rawcp = tif->tif_rawdata;
942 12 : return (0);
943 : }
944 16952 : tif->tif_rawcc = 0;
945 16952 : tif->tif_rawcp = tif->tif_rawdata;
946 : }
947 50881 : return (1);
948 : }
949 :
950 : /*
951 : * Set the current write offset. This should only be
952 : * used to set the offset to a known previous location
953 : * (very carefully), or to 0 so that the next write gets
954 : * appended to the end of the file.
955 : */
956 360 : void TIFFSetWriteOffset(TIFF *tif, toff_t off)
957 : {
958 360 : tif->tif_curoff = off;
959 360 : tif->tif_lastvalidoff = 0;
960 360 : }
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