1 : /* $Id: tif_write.c,v 1.34 2009-06-03 23:47:22 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 STRIPINCR 20 /* expansion factor on strip array */
36 :
37 : #define WRITECHECKSTRIPS(tif, module) \
38 : (((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),0,module))
39 : #define WRITECHECKTILES(tif, module) \
40 : (((tif)->tif_flags&TIFF_BEENWRITING) || TIFFWriteCheck((tif),1,module))
41 : #define BUFFERCHECK(tif) \
42 : ((((tif)->tif_flags & TIFF_BUFFERSETUP) && tif->tif_rawdata) || \
43 : TIFFWriteBufferSetup((tif), NULL, (tmsize_t) -1))
44 :
45 : static int TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module);
46 : static int TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc);
47 :
48 : int
49 22048 : TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample)
50 : {
51 : static const char module[] = "TIFFWriteScanline";
52 : register TIFFDirectory *td;
53 22048 : int status, imagegrew = 0;
54 : uint32 strip;
55 :
56 22048 : if (!WRITECHECKSTRIPS(tif, module))
57 0 : 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 22048 : if (!BUFFERCHECK(tif))
64 0 : return (-1);
65 22048 : tif->tif_flags |= TIFF_BUF4WRITE; /* not strictly sure this is right*/
66 :
67 22048 : td = &tif->tif_dir;
68 : /*
69 : * Extend image length if needed
70 : * (but only for PlanarConfig=1).
71 : */
72 22048 : if (row >= td->td_imagelength) { /* extend image */
73 0 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
74 0 : TIFFErrorExt(tif->tif_clientdata, module,
75 : "Can not change \"ImageLength\" when using separate planes");
76 0 : return (-1);
77 : }
78 0 : td->td_imagelength = row+1;
79 0 : imagegrew = 1;
80 : }
81 : /*
82 : * Calculate strip and check for crossings.
83 : */
84 22048 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
85 15000 : if (sample >= td->td_samplesperpixel) {
86 0 : TIFFErrorExt(tif->tif_clientdata, module,
87 : "%lu: Sample out of range, max %lu",
88 : (unsigned long) sample, (unsigned long) td->td_samplesperpixel);
89 0 : return (-1);
90 : }
91 15000 : strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip;
92 : } else
93 7048 : 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 22048 : if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module))
102 0 : return (-1);
103 22048 : if (strip != tif->tif_curstrip) {
104 : /*
105 : * Changing strips -- flush any data present.
106 : */
107 5 : if (!TIFFFlushData(tif))
108 0 : return (-1);
109 5 : 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 5 : if (strip >= td->td_stripsperimage && imagegrew)
116 0 : td->td_stripsperimage =
117 0 : TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip);
118 5 : tif->tif_row =
119 5 : (strip % td->td_stripsperimage) * td->td_rowsperstrip;
120 5 : if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
121 3 : if (!(*tif->tif_setupencode)(tif))
122 0 : return (-1);
123 3 : tif->tif_flags |= TIFF_CODERSETUP;
124 : }
125 :
126 5 : tif->tif_rawcc = 0;
127 5 : tif->tif_rawcp = tif->tif_rawdata;
128 :
129 5 : if( td->td_stripbytecount[strip] > 0 )
130 : {
131 : /* if we are writing over existing tiles, zero length */
132 0 : td->td_stripbytecount[strip] = 0;
133 :
134 : /* this forces TIFFAppendToStrip() to do a seek */
135 0 : tif->tif_curoff = 0;
136 : }
137 :
138 5 : if (!(*tif->tif_preencode)(tif, sample))
139 0 : return (-1);
140 5 : tif->tif_flags |= TIFF_POSTENCODE;
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 22048 : if (row != tif->tif_row) {
148 0 : 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 0 : tif->tif_row = (strip % td->td_stripsperimage) *
155 : td->td_rowsperstrip;
156 0 : tif->tif_rawcp = tif->tif_rawdata;
157 : }
158 : /*
159 : * Seek forward to the desired row.
160 : */
161 0 : if (!(*tif->tif_seek)(tif, row - tif->tif_row))
162 0 : return (-1);
163 0 : tif->tif_row = row;
164 : }
165 :
166 : /* swab if needed - note that source buffer will be altered */
167 22048 : tif->tif_postdecode( tif, (uint8*) buf, tif->tif_scanlinesize );
168 :
169 22048 : 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 22048 : tif->tif_row = row + 1;
174 22048 : 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 : */
183 : tmsize_t
184 73942 : TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
185 : {
186 : static const char module[] = "TIFFWriteEncodedStrip";
187 73942 : TIFFDirectory *td = &tif->tif_dir;
188 : uint16 sample;
189 :
190 73942 : if (!WRITECHECKSTRIPS(tif, module))
191 0 : 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 73942 : if (strip >= td->td_nstrips) {
202 0 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
203 0 : TIFFErrorExt(tif->tif_clientdata, module,
204 : "Can not grow image by strips when using separate planes");
205 0 : return ((tmsize_t) -1);
206 : }
207 0 : if (!TIFFGrowStrips(tif, 1, module))
208 0 : return ((tmsize_t) -1);
209 0 : td->td_stripsperimage =
210 0 : TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip);
211 : }
212 : /*
213 : * Handle delayed allocation of data buffer. This
214 : * permits it to be sized according to the directory
215 : * info.
216 : */
217 73942 : if (!BUFFERCHECK(tif))
218 0 : return ((tmsize_t) -1);
219 :
220 73942 : tif->tif_flags |= TIFF_BUF4WRITE;
221 73942 : tif->tif_curstrip = strip;
222 :
223 73942 : tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
224 73942 : if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
225 775 : if (!(*tif->tif_setupencode)(tif))
226 0 : return ((tmsize_t) -1);
227 775 : tif->tif_flags |= TIFF_CODERSETUP;
228 : }
229 :
230 73942 : tif->tif_rawcc = 0;
231 73942 : tif->tif_rawcp = tif->tif_rawdata;
232 :
233 73942 : if( td->td_stripbytecount[strip] > 0 )
234 : {
235 : /* Force TIFFAppendToStrip() to consider placing data at end
236 : of file. */
237 24 : tif->tif_curoff = 0;
238 : }
239 :
240 73942 : tif->tif_flags &= ~TIFF_POSTENCODE;
241 73942 : sample = (uint16)(strip / td->td_stripsperimage);
242 73942 : if (!(*tif->tif_preencode)(tif, sample))
243 0 : return ((tmsize_t) -1);
244 :
245 : /* swab if needed - note that source buffer will be altered */
246 73942 : tif->tif_postdecode( tif, (uint8*) data, cc );
247 :
248 73942 : if (!(*tif->tif_encodestrip)(tif, (uint8*) data, cc, sample))
249 0 : return (0);
250 73942 : if (!(*tif->tif_postencode)(tif))
251 0 : return ((tmsize_t) -1);
252 73942 : if (!isFillOrder(tif, td->td_fillorder) &&
253 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
254 0 : TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
255 147835 : if (tif->tif_rawcc > 0 &&
256 73893 : !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
257 0 : return ((tmsize_t) -1);
258 73942 : tif->tif_rawcc = 0;
259 73942 : tif->tif_rawcp = tif->tif_rawdata;
260 73942 : 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 : */
268 : tmsize_t
269 2 : TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
270 : {
271 : static const char module[] = "TIFFWriteRawStrip";
272 2 : TIFFDirectory *td = &tif->tif_dir;
273 :
274 2 : if (!WRITECHECKSTRIPS(tif, module))
275 0 : 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 2 : if (strip >= td->td_nstrips) {
286 0 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
287 0 : TIFFErrorExt(tif->tif_clientdata, module,
288 : "Can not grow image by strips when using separate planes");
289 0 : 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 0 : if (strip >= td->td_stripsperimage)
297 0 : td->td_stripsperimage =
298 0 : TIFFhowmany_32(td->td_imagelength,td->td_rowsperstrip);
299 0 : if (!TIFFGrowStrips(tif, 1, module))
300 0 : return ((tmsize_t) -1);
301 : }
302 2 : tif->tif_curstrip = strip;
303 2 : tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
304 2 : 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 : */
312 : tmsize_t
313 0 : TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s)
314 : {
315 0 : if (!TIFFCheckTile(tif, x, y, z, s))
316 0 : 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 0 : 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 : */
339 : tmsize_t
340 552 : TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
341 : {
342 : static const char module[] = "TIFFWriteEncodedTile";
343 : TIFFDirectory *td;
344 : uint16 sample;
345 :
346 552 : if (!WRITECHECKTILES(tif, module))
347 0 : return ((tmsize_t)(-1));
348 552 : td = &tif->tif_dir;
349 552 : if (tile >= td->td_nstrips) {
350 0 : TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
351 : (unsigned long) tile, (unsigned long) td->td_nstrips);
352 0 : 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 : */
359 552 : if (!BUFFERCHECK(tif))
360 0 : return ((tmsize_t)(-1));
361 :
362 552 : tif->tif_flags |= TIFF_BUF4WRITE;
363 552 : tif->tif_curtile = tile;
364 :
365 552 : tif->tif_rawcc = 0;
366 552 : tif->tif_rawcp = tif->tif_rawdata;
367 :
368 552 : if( td->td_stripbytecount[tile] > 0 )
369 : {
370 : /* Force TIFFAppendToStrip() to consider placing data at end
371 : of file. */
372 65 : tif->tif_curoff = 0;
373 : }
374 :
375 : /*
376 : * Compute tiles per row & per column to compute
377 : * current row and column
378 : */
379 552 : tif->tif_row = (tile % TIFFhowmany_32(td->td_imagelength, td->td_tilelength))
380 : * td->td_tilelength;
381 552 : tif->tif_col = (tile % TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth))
382 : * td->td_tilewidth;
383 :
384 552 : if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
385 63 : if (!(*tif->tif_setupencode)(tif))
386 0 : return ((tmsize_t)(-1));
387 63 : tif->tif_flags |= TIFF_CODERSETUP;
388 : }
389 552 : tif->tif_flags &= ~TIFF_POSTENCODE;
390 552 : sample = (uint16)(tile/td->td_stripsperimage);
391 552 : if (!(*tif->tif_preencode)(tif, sample))
392 0 : 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 : */
398 552 : if ( cc < 1 || cc > tif->tif_tilesize)
399 0 : cc = tif->tif_tilesize;
400 :
401 : /* swab if needed - note that source buffer will be altered */
402 552 : tif->tif_postdecode( tif, (uint8*) data, cc );
403 :
404 552 : if (!(*tif->tif_encodetile)(tif, (uint8*) data, cc, sample))
405 0 : return (0);
406 552 : if (!(*tif->tif_postencode)(tif))
407 0 : return ((tmsize_t)(-1));
408 552 : if (!isFillOrder(tif, td->td_fillorder) &&
409 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
410 0 : TIFFReverseBits((uint8*)tif->tif_rawdata, tif->tif_rawcc);
411 552 : if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
412 : tif->tif_rawdata, tif->tif_rawcc))
413 0 : return ((tmsize_t)(-1));
414 552 : tif->tif_rawcc = 0;
415 552 : tif->tif_rawcp = tif->tif_rawdata;
416 552 : 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 : */
428 : tmsize_t
429 0 : TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
430 : {
431 : static const char module[] = "TIFFWriteRawTile";
432 :
433 0 : if (!WRITECHECKTILES(tif, module))
434 0 : return ((tmsize_t)(-1));
435 0 : if (tile >= tif->tif_dir.td_nstrips) {
436 0 : 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 0 : return ((tmsize_t)(-1));
440 : }
441 0 : 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_imagelength == 0)
447 :
448 : int
449 948 : TIFFSetupStrips(TIFF* tif)
450 : {
451 948 : TIFFDirectory* td = &tif->tif_dir;
452 :
453 948 : if (isTiled(tif))
454 399 : td->td_stripsperimage =
455 266 : isUnspecified(tif, FIELD_TILEDIMENSIONS) ?
456 133 : td->td_samplesperpixel : TIFFNumberOfTiles(tif);
457 : else
458 2445 : td->td_stripsperimage =
459 1630 : isUnspecified(tif, FIELD_ROWSPERSTRIP) ?
460 815 : td->td_samplesperpixel : TIFFNumberOfStrips(tif);
461 948 : td->td_nstrips = td->td_stripsperimage;
462 948 : if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
463 27 : td->td_stripsperimage /= td->td_samplesperpixel;
464 948 : td->td_stripoffset = (uint64 *)
465 948 : _TIFFmalloc(td->td_nstrips * sizeof (uint64));
466 948 : td->td_stripbytecount = (uint64 *)
467 948 : _TIFFmalloc(td->td_nstrips * sizeof (uint64));
468 948 : if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL)
469 0 : return (0);
470 : /*
471 : * Place data at the end-of-file
472 : * (by setting offsets to zero).
473 : */
474 948 : _TIFFmemset(td->td_stripoffset, 0, td->td_nstrips*sizeof (uint64));
475 948 : _TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint64));
476 948 : TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS);
477 948 : TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS);
478 948 : 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 : */
488 : int
489 1988 : TIFFWriteCheck(TIFF* tif, int tiles, const char* module)
490 : {
491 1988 : if (tif->tif_mode == O_RDONLY) {
492 0 : TIFFErrorExt(tif->tif_clientdata, module, "File not open for writing");
493 0 : return (0);
494 : }
495 1988 : if (tiles ^ isTiled(tif)) {
496 0 : 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 0 : return (0);
500 : }
501 :
502 : /*
503 : * On the first write verify all the required information
504 : * has been setup and initialize any data structures that
505 : * had to wait until directory information was set.
506 : * Note that a lot of our work is assumed to remain valid
507 : * because we disallow any of the important parameters
508 : * from changing after we start writing (i.e. once
509 : * TIFF_BEENWRITING is set, TIFFSetField will only allow
510 : * the image's length to be changed).
511 : */
512 1988 : if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) {
513 0 : TIFFErrorExt(tif->tif_clientdata, module,
514 : "Must set \"ImageWidth\" before writing data");
515 0 : return (0);
516 : }
517 1988 : if (tif->tif_dir.td_samplesperpixel == 1) {
518 : /*
519 : * Planarconfiguration is irrelevant in case of single band
520 : * images and need not be included. We will set it anyway,
521 : * because this field is used in other parts of library even
522 : * in the single band case.
523 : */
524 1598 : if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG))
525 0 : tif->tif_dir.td_planarconfig = PLANARCONFIG_CONTIG;
526 : } else {
527 390 : if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) {
528 0 : TIFFErrorExt(tif->tif_clientdata, module,
529 : "Must set \"PlanarConfiguration\" before writing data");
530 0 : return (0);
531 : }
532 : }
533 1988 : if (tif->tif_dir.td_stripoffset == NULL && !TIFFSetupStrips(tif)) {
534 0 : tif->tif_dir.td_nstrips = 0;
535 0 : TIFFErrorExt(tif->tif_clientdata, module, "No space for %s arrays",
536 0 : isTiled(tif) ? "tile" : "strip");
537 0 : return (0);
538 : }
539 1988 : if (isTiled(tif))
540 : {
541 353 : tif->tif_tilesize = TIFFTileSize(tif);
542 353 : if (tif->tif_tilesize == 0)
543 0 : return (0);
544 : }
545 : else
546 1635 : tif->tif_tilesize = (tmsize_t)(-1);
547 1988 : tif->tif_scanlinesize = TIFFScanlineSize(tif);
548 1988 : if (tif->tif_scanlinesize == 0)
549 0 : return (0);
550 1988 : tif->tif_flags |= TIFF_BEENWRITING;
551 1988 : return (1);
552 : }
553 :
554 : /*
555 : * Setup the raw data buffer used for encoding.
556 : */
557 : int
558 870 : TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_t size)
559 : {
560 : static const char module[] = "TIFFWriteBufferSetup";
561 :
562 870 : if (tif->tif_rawdata) {
563 26 : if (tif->tif_flags & TIFF_MYBUFFER) {
564 26 : _TIFFfree(tif->tif_rawdata);
565 26 : tif->tif_flags &= ~TIFF_MYBUFFER;
566 : }
567 26 : tif->tif_rawdata = NULL;
568 : }
569 870 : if (size == (tmsize_t)(-1)) {
570 1653 : size = (isTiled(tif) ?
571 783 : tif->tif_tilesize : TIFFStripSize(tif));
572 : /*
573 : * Make raw data buffer at least 8K
574 : */
575 870 : if (size < 8*1024)
576 777 : size = 8*1024;
577 870 : bp = NULL; /* NB: force malloc */
578 : }
579 870 : if (bp == NULL) {
580 870 : bp = _TIFFmalloc(size);
581 870 : if (bp == NULL) {
582 0 : TIFFErrorExt(tif->tif_clientdata, module, "No space for output buffer");
583 0 : return (0);
584 : }
585 870 : tif->tif_flags |= TIFF_MYBUFFER;
586 : } else
587 0 : tif->tif_flags &= ~TIFF_MYBUFFER;
588 870 : tif->tif_rawdata = (uint8*) bp;
589 870 : tif->tif_rawdatasize = size;
590 870 : tif->tif_rawcc = 0;
591 870 : tif->tif_rawcp = tif->tif_rawdata;
592 870 : tif->tif_flags |= TIFF_BUFFERSETUP;
593 870 : return (1);
594 : }
595 :
596 : /*
597 : * Grow the strip data structures by delta strips.
598 : */
599 : static int
600 0 : TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module)
601 : {
602 0 : TIFFDirectory *td = &tif->tif_dir;
603 : uint64* new_stripoffset;
604 : uint64* new_stripbytecount;
605 :
606 0 : assert(td->td_planarconfig == PLANARCONFIG_CONTIG);
607 0 : new_stripoffset = (uint64*)_TIFFrealloc(td->td_stripoffset,
608 0 : (td->td_nstrips + delta) * sizeof (uint64));
609 0 : new_stripbytecount = (uint64*)_TIFFrealloc(td->td_stripbytecount,
610 0 : (td->td_nstrips + delta) * sizeof (uint64));
611 0 : if (new_stripoffset == NULL || new_stripbytecount == NULL) {
612 0 : if (new_stripoffset)
613 0 : _TIFFfree(new_stripoffset);
614 0 : if (new_stripbytecount)
615 0 : _TIFFfree(new_stripbytecount);
616 0 : td->td_nstrips = 0;
617 0 : TIFFErrorExt(tif->tif_clientdata, module, "No space to expand strip arrays");
618 0 : return (0);
619 : }
620 0 : td->td_stripoffset = new_stripoffset;
621 0 : td->td_stripbytecount = new_stripbytecount;
622 0 : _TIFFmemset(td->td_stripoffset + td->td_nstrips,
623 0 : 0, delta*sizeof (uint64));
624 0 : _TIFFmemset(td->td_stripbytecount + td->td_nstrips,
625 0 : 0, delta*sizeof (uint64));
626 0 : td->td_nstrips += delta;
627 0 : tif->tif_flags |= TIFF_DIRTYDIRECT;
628 :
629 0 : return (1);
630 : }
631 :
632 : /*
633 : * Append the data to the specified strip.
634 : */
635 : static int
636 74501 : TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc)
637 : {
638 : static const char module[] = "TIFFAppendToStrip";
639 74501 : TIFFDirectory *td = &tif->tif_dir;
640 : uint64 m;
641 74501 : int64 old_byte_count = -1;
642 :
643 74501 : if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) {
644 74501 : assert(td->td_nstrips > 0);
645 :
646 74767 : if( td->td_stripbytecount[strip] != 0
647 89 : && td->td_stripoffset[strip] != 0
648 89 : && td->td_stripbytecount[strip] >= (uint64) cc )
649 : {
650 : /*
651 : * There is already tile data on disk, and the new tile
652 : * data we have will fit in the same space. The only
653 : * aspect of this that is risky is that there could be
654 : * more data to append to this strip before we are done
655 : * depending on how we are getting called.
656 : */
657 88 : if (!SeekOK(tif, td->td_stripoffset[strip])) {
658 0 : TIFFErrorExt(tif->tif_clientdata, module,
659 : "Seek error at scanline %lu",
660 : (unsigned long)tif->tif_row);
661 0 : return (0);
662 : }
663 : }
664 : else
665 : {
666 : /*
667 : * Seek to end of file, and set that as our location to
668 : * write this strip.
669 : */
670 74413 : td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END);
671 74413 : tif->tif_flags |= TIFF_DIRTYSTRIP;
672 : }
673 :
674 74501 : tif->tif_curoff = td->td_stripoffset[strip];
675 :
676 : /*
677 : * We are starting a fresh strip/tile, so set the size to zero.
678 : */
679 74501 : old_byte_count = td->td_stripbytecount[strip];
680 74501 : td->td_stripbytecount[strip] = 0;
681 : }
682 :
683 74501 : m = tif->tif_curoff+cc;
684 74501 : if (!(tif->tif_flags&TIFF_BIGTIFF))
685 74496 : m = (uint32)m;
686 74501 : if ((m<tif->tif_curoff)||(m<(uint64)cc))
687 : {
688 0 : TIFFErrorExt(tif->tif_clientdata, module, "Maximum TIFF file size exceeded");
689 0 : return (0);
690 : }
691 74501 : if (!WriteOK(tif, data, cc)) {
692 0 : TIFFErrorExt(tif->tif_clientdata, module, "Write error at scanline %lu",
693 : (unsigned long) tif->tif_row);
694 0 : return (0);
695 : }
696 74501 : tif->tif_curoff = m;
697 74501 : td->td_stripbytecount[strip] += cc;
698 :
699 74501 : if( (int64) td->td_stripbytecount[strip] != old_byte_count )
700 74413 : tif->tif_flags |= TIFF_DIRTYSTRIP;
701 :
702 74501 : return (1);
703 : }
704 :
705 : /*
706 : * Internal version of TIFFFlushData that can be
707 : * called by ``encodestrip routines'' w/o concern
708 : * for infinite recursion.
709 : */
710 : int
711 1517 : TIFFFlushData1(TIFF* tif)
712 : {
713 1517 : if (tif->tif_rawcc > 0 && tif->tif_flags & TIFF_BUF4WRITE ) {
714 496 : if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
715 0 : (tif->tif_flags & TIFF_NOBITREV) == 0)
716 0 : TIFFReverseBits((uint8*)tif->tif_rawdata,
717 : tif->tif_rawcc);
718 992 : if (!TIFFAppendToStrip(tif,
719 496 : isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip,
720 : tif->tif_rawdata, tif->tif_rawcc))
721 0 : return (0);
722 496 : tif->tif_rawcc = 0;
723 496 : tif->tif_rawcp = tif->tif_rawdata;
724 : }
725 1517 : return (1);
726 : }
727 :
728 : /*
729 : * Set the current write offset. This should only be
730 : * used to set the offset to a known previous location
731 : * (very carefully), or to 0 so that the next write gets
732 : * appended to the end of the file.
733 : */
734 : void
735 0 : TIFFSetWriteOffset(TIFF* tif, toff_t off)
736 : {
737 0 : tif->tif_curoff = off;
738 0 : }
739 :
740 : /* vim: set ts=8 sts=8 sw=8 noet: */
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