| OLD | NEW |
|---|
| (Empty) |
| 1 /* $Id: tif_write.c,v 1.37 2012-08-13 22:10:17 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 TIFFWriteScanline(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)) | |
| 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)) | |
| 64 return (-1); | |
| 65 tif->tif_flags |= TIFF_BUF4WRITE; /* 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_SEPARATE) { | |
| 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_SEPARATE) { | |
| 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_sampl
esperpixel); | |
| 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_rowsperstri
p); | |
| 118 tif->tif_row = | |
| 119 (strip % td->td_stripsperimage) * td->td_rowsperstrip; | |
| 120 if ((tif->tif_flags & TIFF_CODERSETUP) == 0) { | |
| 121 if (!(*tif->tif_setupencode)(tif)) | |
| 122 return (-1); | |
| 123 tif->tif_flags |= TIFF_CODERSETUP; | |
| 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_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 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 */ | |
| 183 tmsize_t | |
| 184 TIFFWriteEncodedStrip(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)) | |
| 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_SEPARATE) { | |
| 203 TIFFErrorExt(tif->tif_clientdata, module, | |
| 204 "Can not grow image by strips when using separate pl
anes"); | |
| 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); | |
| 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)) | |
| 218 return ((tmsize_t) -1); | |
| 219 | |
| 220 tif->tif_flags |= TIFF_BUF4WRITE; | |
| 221 tif->tif_curstrip = strip; | |
| 222 | |
| 223 tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip; | |
| 224 if ((tif->tif_flags & TIFF_CODERSETUP) == 0) { | |
| 225 if (!(*tif->tif_setupencode)(tif)) | |
| 226 return ((tmsize_t) -1); | |
| 227 tif->tif_flags |= TIFF_CODERSETUP; | |
| 228 } | |
| 229 | |
| 230 if( td->td_stripbytecount[strip] > 0 ) | |
| 231 { | |
| 232 /* Make sure that at the first attempt of rewriting the tile, we wil
l have */ | |
| 233 /* more bytes available in the output buffer than the previous byte
count, */ | |
| 234 /* so that TIFFAppendToStrip() will detect the overflow when it is c
alled the first */ | |
| 235 /* time if the new compressed tile is bigger than the older one. (GD
AL #4771) */ | |
| 236 if( tif->tif_rawdatasize <= (tmsize_t)td->td_stripbytecount[strip] ) | |
| 237 { | |
| 238 if( !(TIFFWriteBufferSetup(tif, NULL, | |
| 239 (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[stri
p] + 1), 1024))) ) | |
| 240 return ((tmsize_t)(-1)); | |
| 241 } | |
| 242 | |
| 243 /* Force TIFFAppendToStrip() to consider placing data at end | |
| 244 of file. */ | |
| 245 tif->tif_curoff = 0; | |
| 246 } | |
| 247 | |
| 248 tif->tif_rawcc = 0; | |
| 249 tif->tif_rawcp = tif->tif_rawdata; | |
| 250 | |
| 251 tif->tif_flags &= ~TIFF_POSTENCODE; | |
| 252 sample = (uint16)(strip / td->td_stripsperimage); | |
| 253 if (!(*tif->tif_preencode)(tif, sample)) | |
| 254 return ((tmsize_t) -1); | |
| 255 | |
| 256 /* swab if needed - note that source buffer will be altered */ | |
| 257 tif->tif_postdecode( tif, (uint8*) data, cc ); | |
| 258 | |
| 259 if (!(*tif->tif_encodestrip)(tif, (uint8*) data, cc, sample)) | |
| 260 return (0); | |
| 261 if (!(*tif->tif_postencode)(tif)) | |
| 262 return ((tmsize_t) -1); | |
| 263 if (!isFillOrder(tif, td->td_fillorder) && | |
| 264 (tif->tif_flags & TIFF_NOBITREV) == 0) | |
| 265 TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc); | |
| 266 if (tif->tif_rawcc > 0 && | |
| 267 !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc)) | |
| 268 return ((tmsize_t) -1); | |
| 269 tif->tif_rawcc = 0; | |
| 270 tif->tif_rawcp = tif->tif_rawdata; | |
| 271 return (cc); | |
| 272 } | |
| 273 | |
| 274 /* | |
| 275 * Write the supplied data to the specified strip. | |
| 276 * | |
| 277 * NB: Image length must be setup before writing. | |
| 278 */ | |
| 279 tmsize_t | |
| 280 TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc) | |
| 281 { | |
| 282 static const char module[] = "TIFFWriteRawStrip"; | |
| 283 TIFFDirectory *td = &tif->tif_dir; | |
| 284 | |
| 285 if (!WRITECHECKSTRIPS(tif, module)) | |
| 286 return ((tmsize_t) -1); | |
| 287 /* | |
| 288 * Check strip array to make sure there's space. | |
| 289 * We don't support dynamically growing files that | |
| 290 * have data organized in separate bitplanes because | |
| 291 * it's too painful. In that case we require that | |
| 292 * the imagelength be set properly before the first | |
| 293 * write (so that the strips array will be fully | |
| 294 * allocated above). | |
| 295 */ | |
| 296 if (strip >= td->td_nstrips) { | |
| 297 if (td->td_planarconfig == PLANARCONFIG_SEPARATE) { | |
| 298 TIFFErrorExt(tif->tif_clientdata, module, | |
| 299 "Can not grow image by strips when using separate pl
anes"); | |
| 300 return ((tmsize_t) -1); | |
| 301 } | |
| 302 /* | |
| 303 * Watch out for a growing image. The value of | |
| 304 * strips/image will initially be 1 (since it | |
| 305 * can't be deduced until the imagelength is known). | |
| 306 */ | |
| 307 if (strip >= td->td_stripsperimage) | |
| 308 td->td_stripsperimage = | |
| 309 TIFFhowmany_32(td->td_imagelength,td->td_rowsperstri
p); | |
| 310 if (!TIFFGrowStrips(tif, 1, module)) | |
| 311 return ((tmsize_t) -1); | |
| 312 } | |
| 313 tif->tif_curstrip = strip; | |
| 314 tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip; | |
| 315 return (TIFFAppendToStrip(tif, strip, (uint8*) data, cc) ? | |
| 316 cc : (tmsize_t) -1); | |
| 317 } | |
| 318 | |
| 319 /* | |
| 320 * Write and compress a tile of data. The | |
| 321 * tile is selected by the (x,y,z,s) coordinates. | |
| 322 */ | |
| 323 tmsize_t | |
| 324 TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s) | |
| 325 { | |
| 326 if (!TIFFCheckTile(tif, x, y, z, s)) | |
| 327 return ((tmsize_t)(-1)); | |
| 328 /* | |
| 329 * NB: A tile size of -1 is used instead of tif_tilesize knowing | |
| 330 * that TIFFWriteEncodedTile will clamp this to the tile size. | |
| 331 * This is done because the tile size may not be defined until | |
| 332 * after the output buffer is setup in TIFFWriteBufferSetup. | |
| 333 */ | |
| 334 return (TIFFWriteEncodedTile(tif, | |
| 335 TIFFComputeTile(tif, x, y, z, s), buf, (tmsize_t)(-1))); | |
| 336 } | |
| 337 | |
| 338 /* | |
| 339 * Encode the supplied data and write it to the | |
| 340 * specified tile. There must be space for the | |
| 341 * data. The function clamps individual writes | |
| 342 * to a tile to the tile size, but does not (and | |
| 343 * can not) check that multiple writes to the same | |
| 344 * tile do not write more than tile size data. | |
| 345 * | |
| 346 * NB: Image length must be setup before writing; this | |
| 347 * interface does not support automatically growing | |
| 348 * the image on each write (as TIFFWriteScanline does). | |
| 349 */ | |
| 350 tmsize_t | |
| 351 TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc) | |
| 352 { | |
| 353 static const char module[] = "TIFFWriteEncodedTile"; | |
| 354 TIFFDirectory *td; | |
| 355 uint16 sample; | |
| 356 | |
| 357 if (!WRITECHECKTILES(tif, module)) | |
| 358 return ((tmsize_t)(-1)); | |
| 359 td = &tif->tif_dir; | |
| 360 if (tile >= td->td_nstrips) { | |
| 361 TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range
, max %lu", | |
| 362 (unsigned long) tile, (unsigned long) td->td_nstrips); | |
| 363 return ((tmsize_t)(-1)); | |
| 364 } | |
| 365 /* | |
| 366 * Handle delayed allocation of data buffer. This | |
| 367 * permits it to be sized more intelligently (using | |
| 368 * directory information). | |
| 369 */ | |
| 370 if (!BUFFERCHECK(tif)) | |
| 371 return ((tmsize_t)(-1)); | |
| 372 | |
| 373 tif->tif_flags |= TIFF_BUF4WRITE; | |
| 374 tif->tif_curtile = tile; | |
| 375 | |
| 376 if( td->td_stripbytecount[tile] > 0 ) | |
| 377 { | |
| 378 /* Make sure that at the first attempt of rewriting the tile, we wil
l have */ | |
| 379 /* more bytes available in the output buffer than the previous byte
count, */ | |
| 380 /* so that TIFFAppendToStrip() will detect the overflow when it is c
alled the first */ | |
| 381 /* time if the new compressed tile is bigger than the older one. (GD
AL #4771) */ | |
| 382 if( tif->tif_rawdatasize <= (tmsize_t)td->td_stripbytecount[tile] ) | |
| 383 { | |
| 384 if( !(TIFFWriteBufferSetup(tif, NULL, | |
| 385 (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[tile
] + 1), 1024))) ) | |
| 386 return ((tmsize_t)(-1)); | |
| 387 } | |
| 388 | |
| 389 /* Force TIFFAppendToStrip() to consider placing data at end | |
| 390 of file. */ | |
| 391 tif->tif_curoff = 0; | |
| 392 } | |
| 393 | |
| 394 tif->tif_rawcc = 0; | |
| 395 tif->tif_rawcp = tif->tif_rawdata; | |
| 396 | |
| 397 /* | |
| 398 * Compute tiles per row & per column to compute | |
| 399 * current row and column | |
| 400 */ | |
| 401 tif->tif_row = (tile % TIFFhowmany_32(td->td_imagelength, td->td_tilelen
gth)) | |
| 402 * td->td_tilelength; | |
| 403 tif->tif_col = (tile % TIFFhowmany_32(td->td_imagewidth, td->td_tilewidt
h)) | |
| 404 * td->td_tilewidth; | |
| 405 | |
| 406 if ((tif->tif_flags & TIFF_CODERSETUP) == 0) { | |
| 407 if (!(*tif->tif_setupencode)(tif)) | |
| 408 return ((tmsize_t)(-1)); | |
| 409 tif->tif_flags |= TIFF_CODERSETUP; | |
| 410 } | |
| 411 tif->tif_flags &= ~TIFF_POSTENCODE; | |
| 412 sample = (uint16)(tile/td->td_stripsperimage); | |
| 413 if (!(*tif->tif_preencode)(tif, sample)) | |
| 414 return ((tmsize_t)(-1)); | |
| 415 /* | |
| 416 * Clamp write amount to the tile size. This is mostly | |
| 417 * done so that callers can pass in some large number | |
| 418 * (e.g. -1) and have the tile size used instead. | |
| 419 */ | |
| 420 if ( cc < 1 || cc > tif->tif_tilesize) | |
| 421 cc = tif->tif_tilesize; | |
| 422 | |
| 423 /* swab if needed - note that source buffer will be altered */ | |
| 424 tif->tif_postdecode( tif, (uint8*) data, cc ); | |
| 425 | |
| 426 if (!(*tif->tif_encodetile)(tif, (uint8*) data, cc, sample)) | |
| 427 return (0); | |
| 428 if (!(*tif->tif_postencode)(tif)) | |
| 429 return ((tmsize_t)(-1)); | |
| 430 if (!isFillOrder(tif, td->td_fillorder) && | |
| 431 (tif->tif_flags & TIFF_NOBITREV) == 0) | |
| 432 TIFFReverseBits((uint8*)tif->tif_rawdata, tif->tif_rawcc); | |
| 433 if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile, | |
| 434 tif->tif_rawdata, tif->tif_rawcc)) | |
| 435 return ((tmsize_t)(-1)); | |
| 436 tif->tif_rawcc = 0; | |
| 437 tif->tif_rawcp = tif->tif_rawdata; | |
| 438 return (cc); | |
| 439 } | |
| 440 | |
| 441 /* | |
| 442 * Write the supplied data to the specified strip. | |
| 443 * There must be space for the data; we don't check | |
| 444 * if strips overlap! | |
| 445 * | |
| 446 * NB: Image length must be setup before writing; this | |
| 447 * interface does not support automatically growing | |
| 448 * the image on each write (as TIFFWriteScanline does). | |
| 449 */ | |
| 450 tmsize_t | |
| 451 TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc) | |
| 452 { | |
| 453 static const char module[] = "TIFFWriteRawTile"; | |
| 454 | |
| 455 if (!WRITECHECKTILES(tif, module)) | |
| 456 return ((tmsize_t)(-1)); | |
| 457 if (tile >= tif->tif_dir.td_nstrips) { | |
| 458 TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range
, max %lu", | |
| 459 (unsigned long) tile, | |
| 460 (unsigned long) tif->tif_dir.td_nstrips); | |
| 461 return ((tmsize_t)(-1)); | |
| 462 } | |
| 463 return (TIFFAppendToStrip(tif, tile, (uint8*) data, cc) ? | |
| 464 cc : (tmsize_t)(-1)); | |
| 465 } | |
| 466 | |
| 467 #define isUnspecified(tif, f) \ | |
| 468 (TIFFFieldSet(tif,f) && (tif)->tif_dir.td_imagelength == 0) | |
| 469 | |
| 470 int | |
| 471 TIFFSetupStrips(TIFF* tif) | |
| 472 { | |
| 473 TIFFDirectory* td = &tif->tif_dir; | |
| 474 | |
| 475 if (isTiled(tif)) | |
| 476 td->td_stripsperimage = | |
| 477 isUnspecified(tif, FIELD_TILEDIMENSIONS) ? | |
| 478 td->td_samplesperpixel : TIFFNumberOfTiles(tif); | |
| 479 else | |
| 480 td->td_stripsperimage = | |
| 481 isUnspecified(tif, FIELD_ROWSPERSTRIP) ? | |
| 482 td->td_samplesperpixel : TIFFNumberOfStrips(tif); | |
| 483 td->td_nstrips = td->td_stripsperimage; | |
| 484 if (td->td_planarconfig == PLANARCONFIG_SEPARATE) | |
| 485 td->td_stripsperimage /= td->td_samplesperpixel; | |
| 486 td->td_stripoffset = (uint64 *) | |
| 487 _TIFFmalloc(td->td_nstrips * sizeof (uint64)); | |
| 488 td->td_stripbytecount = (uint64 *) | |
| 489 _TIFFmalloc(td->td_nstrips * sizeof (uint64)); | |
| 490 if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL) | |
| 491 return (0); | |
| 492 /* | |
| 493 * Place data at the end-of-file | |
| 494 * (by setting offsets to zero). | |
| 495 */ | |
| 496 _TIFFmemset(td->td_stripoffset, 0, td->td_nstrips*sizeof (uint64)); | |
| 497 _TIFFmemset(td->td_stripbytecount, 0, td->td_nstrips*sizeof (uint64)); | |
| 498 TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS); | |
| 499 TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS); | |
| 500 return (1); | |
| 501 } | |
| 502 #undef isUnspecified | |
| 503 | |
| 504 /* | |
| 505 * Verify file is writable and that the directory | |
| 506 * information is setup properly. In doing the latter | |
| 507 * we also "freeze" the state of the directory so | |
| 508 * that important information is not changed. | |
| 509 */ | |
| 510 int | |
| 511 TIFFWriteCheck(TIFF* tif, int tiles, const char* module) | |
| 512 { | |
| 513 if (tif->tif_mode == O_RDONLY) { | |
| 514 TIFFErrorExt(tif->tif_clientdata, module, "File not open for wri
ting"); | |
| 515 return (0); | |
| 516 } | |
| 517 if (tiles ^ isTiled(tif)) { | |
| 518 TIFFErrorExt(tif->tif_clientdata, module, tiles ? | |
| 519 "Can not write tiles to a stripped image" : | |
| 520 "Can not write scanlines to a tiled image"); | |
| 521 return (0); | |
| 522 } | |
| 523 | |
| 524 _TIFFFillStriles( tif ); | |
| 525 | |
| 526 /* | |
| 527 * On the first write verify all the required information | |
| 528 * has been setup and initialize any data structures that | |
| 529 * had to wait until directory information was set. | |
| 530 * Note that a lot of our work is assumed to remain valid | |
| 531 * because we disallow any of the important parameters | |
| 532 * from changing after we start writing (i.e. once | |
| 533 * TIFF_BEENWRITING is set, TIFFSetField will only allow | |
| 534 * the image's length to be changed). | |
| 535 */ | |
| 536 if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) { | |
| 537 TIFFErrorExt(tif->tif_clientdata, module, | |
| 538 "Must set \"ImageWidth\" before writing data"); | |
| 539 return (0); | |
| 540 } | |
| 541 if (tif->tif_dir.td_samplesperpixel == 1) { | |
| 542 /* | |
| 543 * Planarconfiguration is irrelevant in case of single band | |
| 544 * images and need not be included. We will set it anyway, | |
| 545 * because this field is used in other parts of library even | |
| 546 * in the single band case. | |
| 547 */ | |
| 548 if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) | |
| 549 tif->tif_dir.td_planarconfig = PLANARCONFIG_CONTIG; | |
| 550 } else { | |
| 551 if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) { | |
| 552 TIFFErrorExt(tif->tif_clientdata, module, | |
| 553 "Must set \"PlanarConfiguration\" before writing dat
a"); | |
| 554 return (0); | |
| 555 } | |
| 556 } | |
| 557 if (tif->tif_dir.td_stripoffset == NULL && !TIFFSetupStrips(tif)) { | |
| 558 tif->tif_dir.td_nstrips = 0; | |
| 559 TIFFErrorExt(tif->tif_clientdata, module, "No space for %s array
s", | |
| 560 isTiled(tif) ? "tile" : "strip"); | |
| 561 return (0); | |
| 562 } | |
| 563 if (isTiled(tif)) | |
| 564 { | |
| 565 tif->tif_tilesize = TIFFTileSize(tif); | |
| 566 if (tif->tif_tilesize == 0) | |
| 567 return (0); | |
| 568 } | |
| 569 else | |
| 570 tif->tif_tilesize = (tmsize_t)(-1); | |
| 571 tif->tif_scanlinesize = TIFFScanlineSize(tif); | |
| 572 if (tif->tif_scanlinesize == 0) | |
| 573 return (0); | |
| 574 tif->tif_flags |= TIFF_BEENWRITING; | |
| 575 return (1); | |
| 576 } | |
| 577 | |
| 578 /* | |
| 579 * Setup the raw data buffer used for encoding. | |
| 580 */ | |
| 581 int | |
| 582 TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_t size) | |
| 583 { | |
| 584 static const char module[] = "TIFFWriteBufferSetup"; | |
| 585 | |
| 586 if (tif->tif_rawdata) { | |
| 587 if (tif->tif_flags & TIFF_MYBUFFER) { | |
| 588 _TIFFfree(tif->tif_rawdata); | |
| 589 tif->tif_flags &= ~TIFF_MYBUFFER; | |
| 590 } | |
| 591 tif->tif_rawdata = NULL; | |
| 592 } | |
| 593 if (size == (tmsize_t)(-1)) { | |
| 594 size = (isTiled(tif) ? | |
| 595 tif->tif_tilesize : TIFFStripSize(tif)); | |
| 596 /* | |
| 597 * Make raw data buffer at least 8K | |
| 598 */ | |
| 599 if (size < 8*1024) | |
| 600 size = 8*1024; | |
| 601 bp = NULL; /* NB: force malloc */ | |
| 602 } | |
| 603 if (bp == NULL) { | |
| 604 bp = _TIFFmalloc(size); | |
| 605 if (bp == NULL) { | |
| 606 TIFFErrorExt(tif->tif_clientdata, module, "No space for
output buffer"); | |
| 607 return (0); | |
| 608 } | |
| 609 tif->tif_flags |= TIFF_MYBUFFER; | |
| 610 } else | |
| 611 tif->tif_flags &= ~TIFF_MYBUFFER; | |
| 612 tif->tif_rawdata = (uint8*) bp; | |
| 613 tif->tif_rawdatasize = size; | |
| 614 tif->tif_rawcc = 0; | |
| 615 tif->tif_rawcp = tif->tif_rawdata; | |
| 616 tif->tif_flags |= TIFF_BUFFERSETUP; | |
| 617 return (1); | |
| 618 } | |
| 619 | |
| 620 /* | |
| 621 * Grow the strip data structures by delta strips. | |
| 622 */ | |
| 623 static int | |
| 624 TIFFGrowStrips(TIFF* tif, uint32 delta, const char* module) | |
| 625 { | |
| 626 TIFFDirectory *td = &tif->tif_dir; | |
| 627 uint64* new_stripoffset; | |
| 628 uint64* new_stripbytecount; | |
| 629 | |
| 630 assert(td->td_planarconfig == PLANARCONFIG_CONTIG); | |
| 631 new_stripoffset = (uint64*)_TIFFrealloc(td->td_stripoffset, | |
| 632 (td->td_nstrips + delta) * sizeof (uint64)); | |
| 633 new_stripbytecount = (uint64*)_TIFFrealloc(td->td_stripbytecount, | |
| 634 (td->td_nstrips + delta) * sizeof (uint64)); | |
| 635 if (new_stripoffset == NULL || new_stripbytecount == NULL) { | |
| 636 if (new_stripoffset) | |
| 637 _TIFFfree(new_stripoffset); | |
| 638 if (new_stripbytecount) | |
| 639 _TIFFfree(new_stripbytecount); | |
| 640 td->td_nstrips = 0; | |
| 641 TIFFErrorExt(tif->tif_clientdata, module, "No space to expand st
rip arrays"); | |
| 642 return (0); | |
| 643 } | |
| 644 td->td_stripoffset = new_stripoffset; | |
| 645 td->td_stripbytecount = new_stripbytecount; | |
| 646 _TIFFmemset(td->td_stripoffset + td->td_nstrips, | |
| 647 0, delta*sizeof (uint64)); | |
| 648 _TIFFmemset(td->td_stripbytecount + td->td_nstrips, | |
| 649 0, delta*sizeof (uint64)); | |
| 650 td->td_nstrips += delta; | |
| 651 tif->tif_flags |= TIFF_DIRTYDIRECT; | |
| 652 | |
| 653 return (1); | |
| 654 } | |
| 655 | |
| 656 /* | |
| 657 * Append the data to the specified strip. | |
| 658 */ | |
| 659 static int | |
| 660 TIFFAppendToStrip(TIFF* tif, uint32 strip, uint8* data, tmsize_t cc) | |
| 661 { | |
| 662 static const char module[] = "TIFFAppendToStrip"; | |
| 663 TIFFDirectory *td = &tif->tif_dir; | |
| 664 uint64 m; | |
| 665 int64 old_byte_count = -1; | |
| 666 | |
| 667 if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) { | |
| 668 assert(td->td_nstrips > 0); | |
| 669 | |
| 670 if( td->td_stripbytecount[strip] != 0 | |
| 671 && td->td_stripoffset[strip] != 0 | |
| 672 && td->td_stripbytecount[strip] >= (uint64) cc ) | |
| 673 { | |
| 674 /* | |
| 675 * There is already tile data on disk, and the new tile | |
| 676 * data we have will fit in the same space. The only | |
| 677 * aspect of this that is risky is that there could be | |
| 678 * more data to append to this strip before we are done | |
| 679 * depending on how we are getting called. | |
| 680 */ | |
| 681 if (!SeekOK(tif, td->td_stripoffset[strip])) { | |
| 682 TIFFErrorExt(tif->tif_clientdata, module, | |
| 683 "Seek error at scanline %lu", | |
| 684 (unsigned long)tif->tif_row); | |
| 685 return (0); | |
| 686 } | |
| 687 } | |
| 688 else | |
| 689 { | |
| 690 /* | |
| 691 * Seek to end of file, and set that as our location to | |
| 692 * write this strip. | |
| 693 */ | |
| 694 td->td_stripoffset[strip] = TIFFSeekFile(tif, 0, SEEK_END); | |
| 695 tif->tif_flags |= TIFF_DIRTYSTRIP; | |
| 696 } | |
| 697 | |
| 698 tif->tif_curoff = td->td_stripoffset[strip]; | |
| 699 | |
| 700 /* | |
| 701 * We are starting a fresh strip/tile, so set the size to zero. | |
| 702 */ | |
| 703 old_byte_count = td->td_stripbytecount[strip]; | |
| 704 td->td_stripbytecount[strip] = 0; | |
| 705 } | |
| 706 | |
| 707 m = tif->tif_curoff+cc; | |
| 708 if (!(tif->tif_flags&TIFF_BIGTIFF)) | |
| 709 m = (uint32)m; | |
| 710 if ((m<tif->tif_curoff)||(m<(uint64)cc)) | |
| 711 { | |
| 712 TIFFErrorExt(tif->tif_clientdata, module, "Maximum TIFF file siz
e exceeded"); | |
| 713 return (0); | |
| 714 } | |
| 715 if (!WriteOK(tif, data, cc)) { | |
| 716 TIFFErrorExt(tif->tif_clientdata, module, "Write error at scanli
ne %lu", | |
| 717 (unsigned long) tif->tif_row); | |
| 718 return (0); | |
| 719 } | |
| 720 tif->tif_curoff = m; | |
| 721 td->td_stripbytecount[strip] += cc; | |
| 722 | |
| 723 if( (int64) td->td_stripbytecount[strip] != old_byte_count ) | |
| 724 tif->tif_flags |= TIFF_DIRTYSTRIP; | |
| 725 | |
| 726 return (1); | |
| 727 } | |
| 728 | |
| 729 /* | |
| 730 * Internal version of TIFFFlushData that can be | |
| 731 * called by ``encodestrip routines'' w/o concern | |
| 732 * for infinite recursion. | |
| 733 */ | |
| 734 int | |
| 735 TIFFFlushData1(TIFF* tif) | |
| 736 { | |
| 737 if (tif->tif_rawcc > 0 && tif->tif_flags & TIFF_BUF4WRITE ) { | |
| 738 if (!isFillOrder(tif, tif->tif_dir.td_fillorder) && | |
| 739 (tif->tif_flags & TIFF_NOBITREV) == 0) | |
| 740 TIFFReverseBits((uint8*)tif->tif_rawdata, | |
| 741 tif->tif_rawcc); | |
| 742 if (!TIFFAppendToStrip(tif, | |
| 743 isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip, | |
| 744 tif->tif_rawdata, tif->tif_rawcc)) | |
| 745 return (0); | |
| 746 tif->tif_rawcc = 0; | |
| 747 tif->tif_rawcp = tif->tif_rawdata; | |
| 748 } | |
| 749 return (1); | |
| 750 } | |
| 751 | |
| 752 /* | |
| 753 * Set the current write offset. This should only be | |
| 754 * used to set the offset to a known previous location | |
| 755 * (very carefully), or to 0 so that the next write gets | |
| 756 * appended to the end of the file. | |
| 757 */ | |
| 758 void | |
| 759 TIFFSetWriteOffset(TIFF* tif, toff_t off) | |
| 760 { | |
| 761 tif->tif_curoff = off; | |
| 762 } | |
| 763 | |
| 764 /* vim: set ts=8 sts=8 sw=8 noet: */ | |
| 765 /* | |
| 766 * Local Variables: | |
| 767 * mode: c | |
| 768 * c-basic-offset: 8 | |
| 769 * fill-column: 78 | |
| 770 * End: | |
| 771 */ | |
| 772 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1563103002:
XFA: Upgrade to libtiff 4.0.6. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@xfa