| 1 | /* $Header$ */ |
| 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 | * Directory Write Support Routines. |
| 31 | */ |
| 32 | #include "tiffiop.h" |
| 33 | |
| 34 | #if HAVE_IEEEFP |
| 35 | #define TIFFCvtNativeToIEEEFloat(tif, n, fp) |
| 36 | #define TIFFCvtNativeToIEEEDouble(tif, n, dp) |
| 37 | #else |
| 38 | extern void TIFFCvtNativeToIEEEFloat(TIFF*, uint32, float*); |
| 39 | extern void TIFFCvtNativeToIEEEDouble(TIFF*, uint32, double*); |
| 40 | #endif |
| 41 | |
| 42 | static int TIFFWriteNormalTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*); |
| 43 | static void TIFFSetupShortLong(TIFF*, ttag_t, TIFFDirEntry*, uint32); |
| 44 | static int TIFFSetupShortPair(TIFF*, ttag_t, TIFFDirEntry*); |
| 45 | static int TIFFWritePerSampleShorts(TIFF*, ttag_t, TIFFDirEntry*); |
| 46 | static int TIFFWritePerSampleAnys(TIFF*, TIFFDataType, ttag_t, TIFFDirEntry*); |
| 47 | static int TIFFWriteShortTable(TIFF*, ttag_t, TIFFDirEntry*, uint32, uint16**); |
| 48 | static int TIFFWriteShortArray(TIFF*, |
| 49 | TIFFDataType, ttag_t, TIFFDirEntry*, uint32, uint16*); |
| 50 | static int TIFFWriteLongArray(TIFF *, |
| 51 | TIFFDataType, ttag_t, TIFFDirEntry*, uint32, uint32*); |
| 52 | static int TIFFWriteRationalArray(TIFF *, |
| 53 | TIFFDataType, ttag_t, TIFFDirEntry*, uint32, float*); |
| 54 | static int TIFFWriteFloatArray(TIFF *, |
| 55 | TIFFDataType, ttag_t, TIFFDirEntry*, uint32, float*); |
| 56 | static int TIFFWriteDoubleArray(TIFF *, |
| 57 | TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*); |
| 58 | static int TIFFWriteByteArray(TIFF*, TIFFDirEntry*, char*); |
| 59 | static int TIFFWriteAnyArray(TIFF*, |
| 60 | TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*); |
| 61 | #ifdef COLORIMETRY_SUPPORT |
| 62 | static int TIFFWriteTransferFunction(TIFF*, TIFFDirEntry*); |
| 63 | #endif |
| 64 | #ifdef CMYK_SUPPORT |
| 65 | static int TIFFWriteInkNames(TIFF*, TIFFDirEntry*); |
| 66 | #endif |
| 67 | static int TIFFWriteData(TIFF*, TIFFDirEntry*, char*); |
| 68 | static int TIFFLinkDirectory(TIFF*); |
| 69 | |
| 70 | #define WriteRationalPair(type, tag1, v1, tag2, v2) { \ |
| 71 | if (!TIFFWriteRational(tif, type, tag1, dir, v1)) \ |
| 72 | goto bad; \ |
| 73 | if (!TIFFWriteRational(tif, type, tag2, dir+1, v2)) \ |
| 74 | goto bad; \ |
| 75 | dir++; \ |
| 76 | } |
| 77 | #define TIFFWriteRational(tif, type, tag, dir, v) \ |
| 78 | TIFFWriteRationalArray((tif), (type), (tag), (dir), 1, &(v)) |
| 79 | #ifndef TIFFWriteRational |
| 80 | static int TIFFWriteRational(TIFF*, |
| 81 | TIFFDataType, ttag_t, TIFFDirEntry*, float); |
| 82 | #endif |
| 83 | |
| 84 | /* |
| 85 | * Write the contents of the current directory |
| 86 | * to the specified file. This routine doesn't |
| 87 | * handle overwriting a directory with auxiliary |
| 88 | * storage that's been changed. |
| 89 | */ |
| 90 | int |
| 91 | TIFFWriteDirectory(TIFF* tif) |
| 92 | { |
| 93 | uint16 dircount; |
| 94 | uint32 diroff; |
| 95 | ttag_t tag; |
| 96 | uint32 nfields; |
| 97 | tsize_t dirsize; |
| 98 | char* data; |
| 99 | TIFFDirEntry* dir; |
| 100 | TIFFDirectory* td; |
| 101 | u_long b, fields[FIELD_SETLONGS]; |
| 102 | int fi, nfi; |
| 103 | |
| 104 | if (tif->tif_mode == O_RDONLY) |
| 105 | return (1); |
| 106 | /* |
| 107 | * Clear write state so that subsequent images with |
| 108 | * different characteristics get the right buffers |
| 109 | * setup for them. |
| 110 | */ |
| 111 | if (tif->tif_flags & TIFF_POSTENCODE) { |
| 112 | tif->tif_flags &= ~TIFF_POSTENCODE; |
| 113 | if (!(*tif->tif_postencode)(tif)) { |
| 114 | TIFFError(tif->tif_name, |
| 115 | "Error post-encoding before directory write"); |
| 116 | return (0); |
| 117 | } |
| 118 | } |
| 119 | (*tif->tif_close)(tif); /* shutdown encoder */ |
| 120 | /* |
| 121 | * Flush any data that might have been written |
| 122 | * by the compression close+cleanup routines. |
| 123 | */ |
| 124 | if (tif->tif_rawcc > 0 && !TIFFFlushData1(tif)) { |
| 125 | TIFFError(tif->tif_name, |
| 126 | "Error flushing data before directory write"); |
| 127 | return (0); |
| 128 | } |
| 129 | if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) { |
| 130 | _TIFFfree(tif->tif_rawdata); |
| 131 | tif->tif_rawdata = NULL; |
| 132 | tif->tif_rawcc = 0; |
| 133 | } |
| 134 | tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP); |
| 135 | |
| 136 | td = &tif->tif_dir; |
| 137 | /* |
| 138 | * Size the directory so that we can calculate |
| 139 | * offsets for the data items that aren't kept |
| 140 | * in-place in each field. |
| 141 | */ |
| 142 | nfields = 0; |
| 143 | for (b = 0; b <= FIELD_LAST; b++) |
| 144 | if (TIFFFieldSet(tif, b)) |
| 145 | nfields += (b < FIELD_SUBFILETYPE ? 2 : 1); |
| 146 | dirsize = nfields * sizeof (TIFFDirEntry); |
| 147 | data = (char*) _TIFFmalloc(dirsize); |
| 148 | if (data == NULL) { |
| 149 | TIFFError(tif->tif_name, |
| 150 | "Cannot write directory, out of space"); |
| 151 | return (0); |
| 152 | } |
| 153 | /* |
| 154 | * Directory hasn't been placed yet, put |
| 155 | * it at the end of the file and link it |
| 156 | * into the existing directory structure. |
| 157 | */ |
| 158 | if (tif->tif_diroff == 0 && !TIFFLinkDirectory(tif)) |
| 159 | goto bad; |
| 160 | tif->tif_dataoff = (toff_t)( |
| 161 | tif->tif_diroff + sizeof (uint16) + dirsize + sizeof (toff_t)); |
| 162 | if (tif->tif_dataoff & 1) |
| 163 | tif->tif_dataoff++; |
| 164 | (void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET); |
| 165 | tif->tif_curdir++; |
| 166 | dir = (TIFFDirEntry*) data; |
| 167 | /* |
| 168 | * Setup external form of directory |
| 169 | * entries and write data items. |
| 170 | */ |
| 171 | _TIFFmemcpy(fields, td->td_fieldsset, sizeof (fields)); |
| 172 | /* |
| 173 | * Write out ExtraSamples tag only if |
| 174 | * extra samples are present in the data. |
| 175 | */ |
| 176 | if (FieldSet(fields, FIELD_EXTRASAMPLES) && !td->td_extrasamples) { |
| 177 | ResetFieldBit(fields, FIELD_EXTRASAMPLES); |
| 178 | nfields--; |
| 179 | dirsize -= sizeof (TIFFDirEntry); |
| 180 | } /*XXX*/ |
| 181 | for (fi = 0, nfi = tif->tif_nfields; nfi > 0; nfi--, fi++) { |
| 182 | const TIFFFieldInfo* fip = tif->tif_fieldinfo[fi]; |
| 183 | if (!FieldSet(fields, fip->field_bit)) |
| 184 | continue; |
| 185 | switch (fip->field_bit) { |
| 186 | case FIELD_STRIPOFFSETS: |
| 187 | /* |
| 188 | * We use one field bit for both strip and tile |
| 189 | * offsets, and so must be careful in selecting |
| 190 | * the appropriate field descriptor (so that tags |
| 191 | * are written in sorted order). |
| 192 | */ |
| 193 | tag = isTiled(tif) ? |
| 194 | TIFFTAG_TILEOFFSETS : TIFFTAG_STRIPOFFSETS; |
| 195 | if (tag != fip->field_tag) |
| 196 | continue; |
| 197 | if (!TIFFWriteLongArray(tif, TIFF_LONG, tag, dir, |
| 198 | (uint32) td->td_nstrips, td->td_stripoffset)) |
| 199 | goto bad; |
| 200 | break; |
| 201 | case FIELD_STRIPBYTECOUNTS: |
| 202 | /* |
| 203 | * We use one field bit for both strip and tile |
| 204 | * byte counts, and so must be careful in selecting |
| 205 | * the appropriate field descriptor (so that tags |
| 206 | * are written in sorted order). |
| 207 | */ |
| 208 | tag = isTiled(tif) ? |
| 209 | TIFFTAG_TILEBYTECOUNTS : TIFFTAG_STRIPBYTECOUNTS; |
| 210 | if (tag != fip->field_tag) |
| 211 | continue; |
| 212 | if (!TIFFWriteLongArray(tif, TIFF_LONG, tag, dir, |
| 213 | (uint32) td->td_nstrips, td->td_stripbytecount)) |
| 214 | goto bad; |
| 215 | break; |
| 216 | case FIELD_ROWSPERSTRIP: |
| 217 | TIFFSetupShortLong(tif, TIFFTAG_ROWSPERSTRIP, |
| 218 | dir, td->td_rowsperstrip); |
| 219 | break; |
| 220 | case FIELD_COLORMAP: |
| 221 | if (!TIFFWriteShortTable(tif, TIFFTAG_COLORMAP, dir, |
| 222 | 3, td->td_colormap)) |
| 223 | goto bad; |
| 224 | break; |
| 225 | case FIELD_IMAGEDIMENSIONS: |
| 226 | TIFFSetupShortLong(tif, TIFFTAG_IMAGEWIDTH, |
| 227 | dir++, td->td_imagewidth); |
| 228 | TIFFSetupShortLong(tif, TIFFTAG_IMAGELENGTH, |
| 229 | dir, td->td_imagelength); |
| 230 | break; |
| 231 | case FIELD_TILEDIMENSIONS: |
| 232 | TIFFSetupShortLong(tif, TIFFTAG_TILEWIDTH, |
| 233 | dir++, td->td_tilewidth); |
| 234 | TIFFSetupShortLong(tif, TIFFTAG_TILELENGTH, |
| 235 | dir, td->td_tilelength); |
| 236 | break; |
| 237 | case FIELD_POSITION: |
| 238 | WriteRationalPair(TIFF_RATIONAL, |
| 239 | TIFFTAG_XPOSITION, td->td_xposition, |
| 240 | TIFFTAG_YPOSITION, td->td_yposition); |
| 241 | break; |
| 242 | case FIELD_RESOLUTION: |
| 243 | WriteRationalPair(TIFF_RATIONAL, |
| 244 | TIFFTAG_XRESOLUTION, td->td_xresolution, |
| 245 | TIFFTAG_YRESOLUTION, td->td_yresolution); |
| 246 | break; |
| 247 | case FIELD_BITSPERSAMPLE: |
| 248 | case FIELD_MINSAMPLEVALUE: |
| 249 | case FIELD_MAXSAMPLEVALUE: |
| 250 | case FIELD_SAMPLEFORMAT: |
| 251 | if (!TIFFWritePerSampleShorts(tif, fip->field_tag, dir)) |
| 252 | goto bad; |
| 253 | break; |
| 254 | case FIELD_SMINSAMPLEVALUE: |
| 255 | case FIELD_SMAXSAMPLEVALUE: |
| 256 | if (!TIFFWritePerSampleAnys(tif, |
| 257 | _TIFFSampleToTagType(tif), fip->field_tag, dir)) |
| 258 | goto bad; |
| 259 | break; |
| 260 | case FIELD_PAGENUMBER: |
| 261 | case FIELD_HALFTONEHINTS: |
| 262 | #ifdef YCBCR_SUPPORT |
| 263 | case FIELD_YCBCRSUBSAMPLING: |
| 264 | #endif |
| 265 | #ifdef CMYK_SUPPORT |
| 266 | case FIELD_DOTRANGE: |
| 267 | #endif |
| 268 | if (!TIFFSetupShortPair(tif, fip->field_tag, dir)) |
| 269 | goto bad; |
| 270 | break; |
| 271 | #ifdef CMYK_SUPPORT |
| 272 | case FIELD_INKNAMES: |
| 273 | if (!TIFFWriteInkNames(tif, dir)) |
| 274 | goto bad; |
| 275 | break; |
| 276 | #endif |
| 277 | #ifdef COLORIMETRY_SUPPORT |
| 278 | case FIELD_TRANSFERFUNCTION: |
| 279 | if (!TIFFWriteTransferFunction(tif, dir)) |
| 280 | goto bad; |
| 281 | break; |
| 282 | #endif |
| 283 | #if SUBIFD_SUPPORT |
| 284 | case FIELD_SUBIFD: |
| 285 | if (!TIFFWriteNormalTag(tif, dir, fip)) |
| 286 | goto bad; |
| 287 | /* |
| 288 | * Total hack: if this directory includes a SubIFD |
| 289 | * tag then force the next <n> directories to be |
| 290 | * written as ``sub directories'' of this one. This |
| 291 | * is used to write things like thumbnails and |
| 292 | * image masks that one wants to keep out of the |
| 293 | * normal directory linkage access mechanism. |
| 294 | */ |
| 295 | if (dir->tdir_count > 0) { |
| 296 | tif->tif_flags |= TIFF_INSUBIFD; |
| 297 | tif->tif_nsubifd = dir->tdir_count; |
| 298 | if (dir->tdir_count > 1) |
| 299 | tif->tif_subifdoff = dir->tdir_offset; |
| 300 | else |
| 301 | tif->tif_subifdoff = (uint32)( |
| 302 | tif->tif_diroff |
| 303 | + sizeof (uint16) |
| 304 | + ((char*)&dir->tdir_offset-data)); |
| 305 | } |
| 306 | break; |
| 307 | #endif |
| 308 | default: |
| 309 | if (!TIFFWriteNormalTag(tif, dir, fip)) |
| 310 | goto bad; |
| 311 | break; |
| 312 | } |
| 313 | dir++; |
| 314 | ResetFieldBit(fields, fip->field_bit); |
| 315 | } |
| 316 | /* |
| 317 | * Write directory. |
| 318 | */ |
| 319 | dircount = (uint16) nfields; |
| 320 | diroff = (uint32) tif->tif_nextdiroff; |
| 321 | if (tif->tif_flags & TIFF_SWAB) { |
| 322 | /* |
| 323 | * The file's byte order is opposite to the |
| 324 | * native machine architecture. We overwrite |
| 325 | * the directory information with impunity |
| 326 | * because it'll be released below after we |
| 327 | * write it to the file. Note that all the |
| 328 | * other tag construction routines assume that |
| 329 | * we do this byte-swapping; i.e. they only |
| 330 | * byte-swap indirect data. |
| 331 | */ |
| 332 | for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) { |
| 333 | TIFFSwabArrayOfShort(&dir->tdir_tag, 2); |
| 334 | TIFFSwabArrayOfLong(&dir->tdir_count, 2); |
| 335 | } |
| 336 | dircount = (uint16) nfields; |
| 337 | TIFFSwabShort(&dircount); |
| 338 | TIFFSwabLong(&diroff); |
| 339 | } |
| 340 | (void) TIFFSeekFile(tif, tif->tif_diroff, SEEK_SET); |
| 341 | if (!WriteOK(tif, &dircount, sizeof (dircount))) { |
| 342 | TIFFError(tif->tif_name, "Error writing directory count"); |
| 343 | goto bad; |
| 344 | } |
| 345 | if (!WriteOK(tif, data, dirsize)) { |
| 346 | TIFFError(tif->tif_name, "Error writing directory contents"); |
| 347 | goto bad; |
| 348 | } |
| 349 | if (!WriteOK(tif, &diroff, sizeof (diroff))) { |
| 350 | TIFFError(tif->tif_name, "Error writing directory link"); |
| 351 | goto bad; |
| 352 | } |
| 353 | TIFFFreeDirectory(tif); |
| 354 | _TIFFfree(data); |
| 355 | tif->tif_flags &= ~TIFF_DIRTYDIRECT; |
| 356 | (*tif->tif_cleanup)(tif); |
| 357 | |
| 358 | /* |
| 359 | * Reset directory-related state for subsequent |
| 360 | * directories. |
| 361 | */ |
| 362 | TIFFDefaultDirectory(tif); |
| 363 | tif->tif_diroff = 0; |
| 364 | tif->tif_curoff = 0; |
| 365 | tif->tif_row = (uint32) -1; |
| 366 | tif->tif_curstrip = (tstrip_t) -1; |
| 367 | return (1); |
| 368 | bad: |
| 369 | _TIFFfree(data); |
| 370 | return (0); |
| 371 | } |
| 372 | #undef WriteRationalPair |
| 373 | |
| 374 | /* |
| 375 | * Process tags that are not special cased. |
| 376 | */ |
| 377 | static int |
| 378 | TIFFWriteNormalTag(TIFF* tif, TIFFDirEntry* dir, const TIFFFieldInfo* fip) |
| 379 | { |
| 380 | u_short wc = (u_short) fip->field_writecount; |
| 381 | uint32 wc2; |
| 382 | |
| 383 | dir->tdir_tag = fip->field_tag; |
| 384 | dir->tdir_type = (u_short) fip->field_type; |
| 385 | dir->tdir_count = wc; |
| 386 | #define WRITEF(x,y) x(tif, fip->field_type, fip->field_tag, dir, wc, y) |
| 387 | switch (fip->field_type) { |
| 388 | case TIFF_SHORT: |
| 389 | case TIFF_SSHORT: |
| 390 | if (wc > 1) { |
| 391 | uint16* wp; |
| 392 | if (wc == (u_short) TIFF_VARIABLE) |
| 393 | TIFFGetField(tif, fip->field_tag, &wc, &wp); |
| 394 | else |
| 395 | TIFFGetField(tif, fip->field_tag, &wp); |
| 396 | if (!WRITEF(TIFFWriteShortArray, wp)) |
| 397 | return (0); |
| 398 | } else { |
| 399 | uint16 sv; |
| 400 | TIFFGetField(tif, fip->field_tag, &sv); |
| 401 | dir->tdir_offset = |
| 402 | TIFFInsertData(tif, dir->tdir_type, sv); |
| 403 | } |
| 404 | break; |
| 405 | case TIFF_LONG: |
| 406 | case TIFF_SLONG: |
| 407 | if (wc > 1) { |
| 408 | uint32* lp; |
| 409 | if (wc == (u_short) TIFF_VARIABLE) |
| 410 | TIFFGetField(tif, fip->field_tag, &wc, &lp); |
| 411 | else |
| 412 | TIFFGetField(tif, fip->field_tag, &lp); |
| 413 | if (!WRITEF(TIFFWriteLongArray, lp)) |
| 414 | return (0); |
| 415 | } else { |
| 416 | /* XXX handle LONG->SHORT conversion */ |
| 417 | TIFFGetField(tif, fip->field_tag, &dir->tdir_offset); |
| 418 | } |
| 419 | break; |
| 420 | case TIFF_RATIONAL: |
| 421 | case TIFF_SRATIONAL: |
| 422 | if (wc > 1) { |
| 423 | float* fp; |
| 424 | if (wc == (u_short) TIFF_VARIABLE) |
| 425 | TIFFGetField(tif, fip->field_tag, &wc, &fp); |
| 426 | else |
| 427 | TIFFGetField(tif, fip->field_tag, &fp); |
| 428 | if (!WRITEF(TIFFWriteRationalArray, fp)) |
| 429 | return (0); |
| 430 | } else { |
| 431 | float fv; |
| 432 | TIFFGetField(tif, fip->field_tag, &fv); |
| 433 | if (!WRITEF(TIFFWriteRationalArray, &fv)) |
| 434 | return (0); |
| 435 | } |
| 436 | break; |
| 437 | case TIFF_FLOAT: |
| 438 | if (wc > 1) { |
| 439 | float* fp; |
| 440 | if (wc == (u_short) TIFF_VARIABLE) |
| 441 | TIFFGetField(tif, fip->field_tag, &wc, &fp); |
| 442 | else |
| 443 | TIFFGetField(tif, fip->field_tag, &fp); |
| 444 | if (!WRITEF(TIFFWriteFloatArray, fp)) |
| 445 | return (0); |
| 446 | } else { |
| 447 | float fv; |
| 448 | TIFFGetField(tif, fip->field_tag, &fv); |
| 449 | if (!WRITEF(TIFFWriteFloatArray, &fv)) |
| 450 | return (0); |
| 451 | } |
| 452 | break; |
| 453 | case TIFF_DOUBLE: |
| 454 | if (wc > 1) { |
| 455 | double* dp; |
| 456 | if (wc == (u_short) TIFF_VARIABLE) |
| 457 | TIFFGetField(tif, fip->field_tag, &wc, &dp); |
| 458 | else |
| 459 | TIFFGetField(tif, fip->field_tag, &dp); |
| 460 | if (!WRITEF(TIFFWriteDoubleArray, dp)) |
| 461 | return (0); |
| 462 | } else { |
| 463 | double dv; |
| 464 | TIFFGetField(tif, fip->field_tag, &dv); |
| 465 | if (!WRITEF(TIFFWriteDoubleArray, &dv)) |
| 466 | return (0); |
| 467 | } |
| 468 | break; |
| 469 | case TIFF_ASCII: |
| 470 | { char* cp; |
| 471 | TIFFGetField(tif, fip->field_tag, &cp); |
| 472 | dir->tdir_count = (uint32) (strlen(cp) + 1); |
| 473 | if (!TIFFWriteByteArray(tif, dir, cp)) |
| 474 | return (0); |
| 475 | } |
| 476 | break; |
| 477 | |
| 478 | /* added based on patch request from MARTIN.MCBRIDE.MM@agfa.co.uk, |
| 479 | correctness not verified (FW, 99/08) */ |
| 480 | case TIFF_BYTE: |
| 481 | case TIFF_SBYTE: |
| 482 | if (wc > 1) { |
| 483 | char* cp; |
| 484 | if (wc == (u_short) TIFF_VARIABLE) { |
| 485 | TIFFGetField(tif, fip->field_tag, &wc, &cp); |
| 486 | dir->tdir_count = wc; |
| 487 | } else |
| 488 | TIFFGetField(tif, fip->field_tag, &cp); |
| 489 | if (!TIFFWriteByteArray(tif, dir, cp)) |
| 490 | return (0); |
| 491 | } else { |
| 492 | char cv; |
| 493 | TIFFGetField(tif, fip->field_tag, &cv); |
| 494 | if (!TIFFWriteByteArray(tif, dir, &cv)) |
| 495 | return (0); |
| 496 | } |
| 497 | break; |
| 498 | |
| 499 | case TIFF_UNDEFINED: |
| 500 | { char* cp; |
| 501 | if (wc == (u_short) TIFF_VARIABLE) { |
| 502 | TIFFGetField(tif, fip->field_tag, &wc, &cp); |
| 503 | dir->tdir_count = wc; |
| 504 | } else if (wc == (u_short) TIFF_VARIABLE2) { |
| 505 | TIFFGetField(tif, fip->field_tag, &wc2, &cp); |
| 506 | dir->tdir_count = wc2; |
| 507 | } else |
| 508 | TIFFGetField(tif, fip->field_tag, &cp); |
| 509 | if (!TIFFWriteByteArray(tif, dir, cp)) |
| 510 | return (0); |
| 511 | } |
| 512 | break; |
| 513 | |
| 514 | case TIFF_NOTYPE: |
| 515 | break; |
| 516 | } |
| 517 | return (1); |
| 518 | } |
| 519 | #undef WRITEF |
| 520 | |
| 521 | /* |
| 522 | * Setup a directory entry with either a SHORT |
| 523 | * or LONG type according to the value. |
| 524 | */ |
| 525 | static void |
| 526 | TIFFSetupShortLong(TIFF* tif, ttag_t tag, TIFFDirEntry* dir, uint32 v) |
| 527 | { |
| 528 | dir->tdir_tag = tag; |
| 529 | dir->tdir_count = 1; |
| 530 | if (v > 0xffffL) { |
| 531 | dir->tdir_type = (short) TIFF_LONG; |
| 532 | dir->tdir_offset = v; |
| 533 | } else { |
| 534 | dir->tdir_type = (short) TIFF_SHORT; |
| 535 | dir->tdir_offset = TIFFInsertData(tif, (int) TIFF_SHORT, v); |
| 536 | } |
| 537 | } |
| 538 | #undef MakeShortDirent |
| 539 | |
| 540 | #ifndef TIFFWriteRational |
| 541 | /* |
| 542 | * Setup a RATIONAL directory entry and |
| 543 | * write the associated indirect value. |
| 544 | */ |
| 545 | static int |
| 546 | TIFFWriteRational(TIFF* tif, |
| 547 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, float v) |
| 548 | { |
| 549 | return (TIFFWriteRationalArray(tif, type, tag, dir, 1, &v)); |
| 550 | } |
| 551 | #endif |
| 552 | |
| 553 | #define NITEMS(x) (sizeof (x) / sizeof (x[0])) |
| 554 | /* |
| 555 | * Setup a directory entry that references a |
| 556 | * samples/pixel array of SHORT values and |
| 557 | * (potentially) write the associated indirect |
| 558 | * values. |
| 559 | */ |
| 560 | static int |
| 561 | TIFFWritePerSampleShorts(TIFF* tif, ttag_t tag, TIFFDirEntry* dir) |
| 562 | { |
| 563 | uint16 buf[10], v; |
| 564 | uint16* w = buf; |
| 565 | int i, status, samples = tif->tif_dir.td_samplesperpixel; |
| 566 | |
| 567 | if (samples > NITEMS(buf)) |
| 568 | w = (uint16*) _TIFFmalloc(samples * sizeof (uint16)); |
| 569 | TIFFGetField(tif, tag, &v); |
| 570 | for (i = 0; i < samples; i++) |
| 571 | w[i] = v; |
| 572 | status = TIFFWriteShortArray(tif, TIFF_SHORT, tag, dir, samples, w); |
| 573 | if (w != buf) |
| 574 | _TIFFfree((char*) w); |
| 575 | return (status); |
| 576 | } |
| 577 | |
| 578 | /* |
| 579 | * Setup a directory entry that references a samples/pixel array of ``type'' |
| 580 | * values and (potentially) write the associated indirect values. The source |
| 581 | * data from TIFFGetField() for the specified tag must be returned as double. |
| 582 | */ |
| 583 | static int |
| 584 | TIFFWritePerSampleAnys(TIFF* tif, |
| 585 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir) |
| 586 | { |
| 587 | double buf[10], v; |
| 588 | double* w = buf; |
| 589 | int i, status; |
| 590 | int samples = (int) tif->tif_dir.td_samplesperpixel; |
| 591 | |
| 592 | if (samples > NITEMS(buf)) |
| 593 | w = (double*) _TIFFmalloc(samples * sizeof (double)); |
| 594 | TIFFGetField(tif, tag, &v); |
| 595 | for (i = 0; i < samples; i++) |
| 596 | w[i] = v; |
| 597 | status = TIFFWriteAnyArray(tif, type, tag, dir, samples, w); |
| 598 | if (w != buf) |
| 599 | _TIFFfree(w); |
| 600 | return (status); |
| 601 | } |
| 602 | #undef NITEMS |
| 603 | |
| 604 | /* |
| 605 | * Setup a pair of shorts that are returned by |
| 606 | * value, rather than as a reference to an array. |
| 607 | */ |
| 608 | static int |
| 609 | TIFFSetupShortPair(TIFF* tif, ttag_t tag, TIFFDirEntry* dir) |
| 610 | { |
| 611 | uint16 v[2]; |
| 612 | |
| 613 | TIFFGetField(tif, tag, &v[0], &v[1]); |
| 614 | return (TIFFWriteShortArray(tif, TIFF_SHORT, tag, dir, 2, v)); |
| 615 | } |
| 616 | |
| 617 | /* |
| 618 | * Setup a directory entry for an NxM table of shorts, |
| 619 | * where M is known to be 2**bitspersample, and write |
| 620 | * the associated indirect data. |
| 621 | */ |
| 622 | static int |
| 623 | TIFFWriteShortTable(TIFF* tif, |
| 624 | ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16** table) |
| 625 | { |
| 626 | uint32 i, off; |
| 627 | |
| 628 | dir->tdir_tag = tag; |
| 629 | dir->tdir_type = (short) TIFF_SHORT; |
| 630 | /* XXX -- yech, fool TIFFWriteData */ |
| 631 | dir->tdir_count = (uint32) (1L<<tif->tif_dir.td_bitspersample); |
| 632 | off = tif->tif_dataoff; |
| 633 | for (i = 0; i < n; i++) |
| 634 | if (!TIFFWriteData(tif, dir, (char *)table[i])) |
| 635 | return (0); |
| 636 | dir->tdir_count *= n; |
| 637 | dir->tdir_offset = off; |
| 638 | return (1); |
| 639 | } |
| 640 | |
| 641 | /* |
| 642 | * Write/copy data associated with an ASCII or opaque tag value. |
| 643 | */ |
| 644 | static int |
| 645 | TIFFWriteByteArray(TIFF* tif, TIFFDirEntry* dir, char* cp) |
| 646 | { |
| 647 | if (dir->tdir_count > 4) { |
| 648 | if (!TIFFWriteData(tif, dir, cp)) |
| 649 | return (0); |
| 650 | } else |
| 651 | _TIFFmemcpy(&dir->tdir_offset, cp, dir->tdir_count); |
| 652 | return (1); |
| 653 | } |
| 654 | |
| 655 | /* |
| 656 | * Setup a directory entry of an array of SHORT |
| 657 | * or SSHORT and write the associated indirect values. |
| 658 | */ |
| 659 | static int |
| 660 | TIFFWriteShortArray(TIFF* tif, |
| 661 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16* v) |
| 662 | { |
| 663 | dir->tdir_tag = tag; |
| 664 | dir->tdir_type = (short) type; |
| 665 | dir->tdir_count = n; |
| 666 | if (n <= 2) { |
| 667 | if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) { |
| 668 | dir->tdir_offset = (uint32) ((long) v[0] << 16); |
| 669 | if (n == 2) |
| 670 | dir->tdir_offset |= v[1] & 0xffff; |
| 671 | } else { |
| 672 | dir->tdir_offset = v[0] & 0xffff; |
| 673 | if (n == 2) |
| 674 | dir->tdir_offset |= (long) v[1] << 16; |
| 675 | } |
| 676 | return (1); |
| 677 | } else |
| 678 | return (TIFFWriteData(tif, dir, (char*) v)); |
| 679 | } |
| 680 | |
| 681 | /* |
| 682 | * Setup a directory entry of an array of LONG |
| 683 | * or SLONG and write the associated indirect values. |
| 684 | */ |
| 685 | static int |
| 686 | TIFFWriteLongArray(TIFF* tif, |
| 687 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, uint32* v) |
| 688 | { |
| 689 | dir->tdir_tag = tag; |
| 690 | dir->tdir_type = (short) type; |
| 691 | dir->tdir_count = n; |
| 692 | if (n == 1) { |
| 693 | dir->tdir_offset = v[0]; |
| 694 | return (1); |
| 695 | } else |
| 696 | return (TIFFWriteData(tif, dir, (char*) v)); |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | * Setup a directory entry of an array of RATIONAL |
| 701 | * or SRATIONAL and write the associated indirect values. |
| 702 | */ |
| 703 | static int |
| 704 | TIFFWriteRationalArray(TIFF* tif, |
| 705 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v) |
| 706 | { |
| 707 | uint32 i; |
| 708 | uint32* t; |
| 709 | int status; |
| 710 | |
| 711 | dir->tdir_tag = tag; |
| 712 | dir->tdir_type = (short) type; |
| 713 | dir->tdir_count = n; |
| 714 | t = (uint32*) _TIFFmalloc(2*n * sizeof (uint32)); |
| 715 | for (i = 0; i < n; i++) { |
| 716 | float fv = v[i]; |
| 717 | int sign = 1; |
| 718 | uint32 den; |
| 719 | |
| 720 | if (fv < 0) { |
| 721 | if (type == TIFF_RATIONAL) { |
| 722 | TIFFWarning(tif->tif_name, |
| 723 | "\"%s\": Information lost writing value (%g) as (unsigned) RATIONAL", |
| 724 | _TIFFFieldWithTag(tif,tag)->field_name, fv); |
| 725 | fv = 0; |
| 726 | } else |
| 727 | fv = -fv, sign = -1; |
| 728 | } |
| 729 | den = 1L; |
| 730 | if (fv > 0) { |
| 731 | while (fv < 1L<<(31-3) && den < 1L<<(31-3)) |
| 732 | fv *= 1<<3, den *= 1L<<3; |
| 733 | } |
| 734 | t[2*i+0] = sign * (fv + 0.5); |
| 735 | t[2*i+1] = den; |
| 736 | } |
| 737 | status = TIFFWriteData(tif, dir, (char *)t); |
| 738 | _TIFFfree((char*) t); |
| 739 | return (status); |
| 740 | } |
| 741 | |
| 742 | static int |
| 743 | TIFFWriteFloatArray(TIFF* tif, |
| 744 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v) |
| 745 | { |
| 746 | dir->tdir_tag = tag; |
| 747 | dir->tdir_type = (short) type; |
| 748 | dir->tdir_count = n; |
| 749 | TIFFCvtNativeToIEEEFloat(tif, n, v); |
| 750 | if (n == 1) { |
| 751 | dir->tdir_offset = *(uint32*) &v[0]; |
| 752 | return (1); |
| 753 | } else |
| 754 | return (TIFFWriteData(tif, dir, (char*) v)); |
| 755 | } |
| 756 | |
| 757 | static int |
| 758 | TIFFWriteDoubleArray(TIFF* tif, |
| 759 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v) |
| 760 | { |
| 761 | dir->tdir_tag = tag; |
| 762 | dir->tdir_type = (short) type; |
| 763 | dir->tdir_count = n; |
| 764 | TIFFCvtNativeToIEEEDouble(tif, n, v); |
| 765 | return (TIFFWriteData(tif, dir, (char*) v)); |
| 766 | } |
| 767 | |
| 768 | /* |
| 769 | * Write an array of ``type'' values for a specified tag (i.e. this is a tag |
| 770 | * which is allowed to have different types, e.g. SMaxSampleType). |
| 771 | * Internally the data values are represented as double since a double can |
| 772 | * hold any of the TIFF tag types (yes, this should really be an abstract |
| 773 | * type tany_t for portability). The data is converted into the specified |
| 774 | * type in a temporary buffer and then handed off to the appropriate array |
| 775 | * writer. |
| 776 | */ |
| 777 | static int |
| 778 | TIFFWriteAnyArray(TIFF* tif, |
| 779 | TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v) |
| 780 | { |
| 781 | char buf[10 * sizeof(double)]; |
| 782 | char* w = buf; |
| 783 | int i, status = 0; |
| 784 | |
| 785 | if (n * tiffDataWidth[type] > sizeof buf) |
| 786 | w = (char*) _TIFFmalloc(n * tiffDataWidth[type]); |
| 787 | switch (type) { |
| 788 | case TIFF_BYTE: |
| 789 | { uint8* bp = (uint8*) w; |
| 790 | for (i = 0; i < n; i++) |
| 791 | bp[i] = (uint8) v[i]; |
| 792 | dir->tdir_tag = tag; |
| 793 | dir->tdir_type = (short) type; |
| 794 | dir->tdir_count = n; |
| 795 | if (!TIFFWriteByteArray(tif, dir, (char*) bp)) |
| 796 | goto out; |
| 797 | } |
| 798 | break; |
| 799 | case TIFF_SBYTE: |
| 800 | { int8* bp = (int8*) w; |
| 801 | for (i = 0; i < n; i++) |
| 802 | bp[i] = (int8) v[i]; |
| 803 | dir->tdir_tag = tag; |
| 804 | dir->tdir_type = (short) type; |
| 805 | dir->tdir_count = n; |
| 806 | if (!TIFFWriteByteArray(tif, dir, (char*) bp)) |
| 807 | goto out; |
| 808 | } |
| 809 | break; |
| 810 | case TIFF_SHORT: |
| 811 | { uint16* bp = (uint16*) w; |
| 812 | for (i = 0; i < n; i++) |
| 813 | bp[i] = (uint16) v[i]; |
| 814 | if (!TIFFWriteShortArray(tif, type, tag, dir, n, (uint16*)bp)) |
| 815 | goto out; |
| 816 | } |
| 817 | break; |
| 818 | case TIFF_SSHORT: |
| 819 | { int16* bp = (int16*) w; |
| 820 | for (i = 0; i < n; i++) |
| 821 | bp[i] = (int16) v[i]; |
| 822 | if (!TIFFWriteShortArray(tif, type, tag, dir, n, (uint16*)bp)) |
| 823 | goto out; |
| 824 | } |
| 825 | break; |
| 826 | case TIFF_LONG: |
| 827 | { uint32* bp = (uint32*) w; |
| 828 | for (i = 0; i < n; i++) |
| 829 | bp[i] = (uint32) v[i]; |
| 830 | if (!TIFFWriteLongArray(tif, type, tag, dir, n, bp)) |
| 831 | goto out; |
| 832 | } |
| 833 | break; |
| 834 | case TIFF_SLONG: |
| 835 | { int32* bp = (int32*) w; |
| 836 | for (i = 0; i < n; i++) |
| 837 | bp[i] = (int32) v[i]; |
| 838 | if (!TIFFWriteLongArray(tif, type, tag, dir, n, (uint32*) bp)) |
| 839 | goto out; |
| 840 | } |
| 841 | break; |
| 842 | case TIFF_FLOAT: |
| 843 | { float* bp = (float*) w; |
| 844 | for (i = 0; i < n; i++) |
| 845 | bp[i] = (float) v[i]; |
| 846 | if (!TIFFWriteFloatArray(tif, type, tag, dir, n, bp)) |
| 847 | goto out; |
| 848 | } |
| 849 | break; |
| 850 | case TIFF_DOUBLE: |
| 851 | return (TIFFWriteDoubleArray(tif, type, tag, dir, n, v)); |
| 852 | default: |
| 853 | /* TIFF_NOTYPE */ |
| 854 | /* TIFF_ASCII */ |
| 855 | /* TIFF_UNDEFINED */ |
| 856 | /* TIFF_RATIONAL */ |
| 857 | /* TIFF_SRATIONAL */ |
| 858 | goto out; |
| 859 | } |
| 860 | status = 1; |
| 861 | out: |
| 862 | if (w != buf) |
| 863 | _TIFFfree(w); |
| 864 | return (status); |
| 865 | } |
| 866 | |
| 867 | #ifdef COLORIMETRY_SUPPORT |
| 868 | static int |
| 869 | TIFFWriteTransferFunction(TIFF* tif, TIFFDirEntry* dir) |
| 870 | { |
| 871 | TIFFDirectory* td = &tif->tif_dir; |
| 872 | tsize_t n = (1L<<td->td_bitspersample) * sizeof (uint16); |
| 873 | uint16** tf = td->td_transferfunction; |
| 874 | int ncols; |
| 875 | |
| 876 | /* |
| 877 | * Check if the table can be written as a single column, |
| 878 | * or if it must be written as 3 columns. Note that we |
| 879 | * write a 3-column tag if there are 2 samples/pixel and |
| 880 | * a single column of data won't suffice--hmm. |
| 881 | */ |
| 882 | switch (td->td_samplesperpixel - td->td_extrasamples) { |
| 883 | default: if (_TIFFmemcmp(tf[0], tf[2], n)) { ncols = 3; break; } |
| 884 | case 2: if (_TIFFmemcmp(tf[0], tf[1], n)) { ncols = 3; break; } |
| 885 | case 1: case 0: ncols = 1; |
| 886 | } |
| 887 | return (TIFFWriteShortTable(tif, |
| 888 | TIFFTAG_TRANSFERFUNCTION, dir, ncols, tf)); |
| 889 | } |
| 890 | #endif |
| 891 | |
| 892 | #ifdef CMYK_SUPPORT |
| 893 | static int |
| 894 | TIFFWriteInkNames(TIFF* tif, TIFFDirEntry* dir) |
| 895 | { |
| 896 | TIFFDirectory* td = &tif->tif_dir; |
| 897 | |
| 898 | dir->tdir_tag = TIFFTAG_INKNAMES; |
| 899 | dir->tdir_type = (short) TIFF_ASCII; |
| 900 | dir->tdir_count = td->td_inknameslen; |
| 901 | return (TIFFWriteByteArray(tif, dir, td->td_inknames)); |
| 902 | } |
| 903 | #endif |
| 904 | |
| 905 | /* |
| 906 | * Write a contiguous directory item. |
| 907 | */ |
| 908 | static int |
| 909 | TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp) |
| 910 | { |
| 911 | tsize_t cc; |
| 912 | |
| 913 | if (tif->tif_flags & TIFF_SWAB) { |
| 914 | switch (dir->tdir_type) { |
| 915 | case TIFF_SHORT: |
| 916 | case TIFF_SSHORT: |
| 917 | TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count); |
| 918 | break; |
| 919 | case TIFF_LONG: |
| 920 | case TIFF_SLONG: |
| 921 | case TIFF_FLOAT: |
| 922 | TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count); |
| 923 | break; |
| 924 | case TIFF_RATIONAL: |
| 925 | case TIFF_SRATIONAL: |
| 926 | TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count); |
| 927 | break; |
| 928 | case TIFF_DOUBLE: |
| 929 | TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count); |
| 930 | break; |
| 931 | } |
| 932 | } |
| 933 | dir->tdir_offset = tif->tif_dataoff; |
| 934 | cc = dir->tdir_count * tiffDataWidth[dir->tdir_type]; |
| 935 | if (SeekOK(tif, dir->tdir_offset) && |
| 936 | WriteOK(tif, cp, cc)) { |
| 937 | tif->tif_dataoff += (cc + 1) & ~1; |
| 938 | return (1); |
| 939 | } |
| 940 | TIFFError(tif->tif_name, "Error writing data for field \"%s\"", |
| 941 | _TIFFFieldWithTag(tif, dir->tdir_tag)->field_name); |
| 942 | return (0); |
| 943 | } |
| 944 | |
| 945 | /* |
| 946 | * Link the current directory into the |
| 947 | * directory chain for the file. |
| 948 | */ |
| 949 | static int |
| 950 | TIFFLinkDirectory(TIFF* tif) |
| 951 | { |
| 952 | static const char module[] = "TIFFLinkDirectory"; |
| 953 | uint32 nextdir; |
| 954 | uint32 diroff; |
| 955 | |
| 956 | tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1; |
| 957 | diroff = (uint32) tif->tif_diroff; |
| 958 | if (tif->tif_flags & TIFF_SWAB) |
| 959 | TIFFSwabLong(&diroff); |
| 960 | #if SUBIFD_SUPPORT |
| 961 | if (tif->tif_flags & TIFF_INSUBIFD) { |
| 962 | (void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET); |
| 963 | if (!WriteOK(tif, &diroff, sizeof (diroff))) { |
| 964 | TIFFError(module, |
| 965 | "%s: Error writing SubIFD directory link", |
| 966 | tif->tif_name); |
| 967 | return (0); |
| 968 | } |
| 969 | /* |
| 970 | * Advance to the next SubIFD or, if this is |
| 971 | * the last one configured, revert back to the |
| 972 | * normal directory linkage. |
| 973 | */ |
| 974 | if (--tif->tif_nsubifd) |
| 975 | tif->tif_subifdoff += sizeof (diroff); |
| 976 | else |
| 977 | tif->tif_flags &= ~TIFF_INSUBIFD; |
| 978 | return (1); |
| 979 | } |
| 980 | #endif |
| 981 | if (tif->tif_header.tiff_diroff == 0) { |
| 982 | /* |
| 983 | * First directory, overwrite offset in header. |
| 984 | */ |
| 985 | tif->tif_header.tiff_diroff = (uint32) tif->tif_diroff; |
| 986 | #define HDROFF(f) ((toff_t) &(((TIFFHeader*) 0)->f)) |
| 987 | (void) TIFFSeekFile(tif, HDROFF(tiff_diroff), SEEK_SET); |
| 988 | if (!WriteOK(tif, &diroff, sizeof (diroff))) { |
| 989 | TIFFError(tif->tif_name, "Error writing TIFF header"); |
| 990 | return (0); |
| 991 | } |
| 992 | return (1); |
| 993 | } |
| 994 | /* |
| 995 | * Not the first directory, search to the last and append. |
| 996 | */ |
| 997 | nextdir = tif->tif_header.tiff_diroff; |
| 998 | do { |
| 999 | uint16 dircount; |
| 1000 | |
| 1001 | if (!SeekOK(tif, nextdir) || |
| 1002 | !ReadOK(tif, &dircount, sizeof (dircount))) { |
| 1003 | TIFFError(module, "Error fetching directory count"); |
| 1004 | return (0); |
| 1005 | } |
| 1006 | if (tif->tif_flags & TIFF_SWAB) |
| 1007 | TIFFSwabShort(&dircount); |
| 1008 | (void) TIFFSeekFile(tif, |
| 1009 | dircount * sizeof (TIFFDirEntry), SEEK_CUR); |
| 1010 | if (!ReadOK(tif, &nextdir, sizeof (nextdir))) { |
| 1011 | TIFFError(module, "Error fetching directory link"); |
| 1012 | return (0); |
| 1013 | } |
| 1014 | if (tif->tif_flags & TIFF_SWAB) |
| 1015 | TIFFSwabLong(&nextdir); |
| 1016 | } while (nextdir != 0); |
| 1017 | (void) TIFFSeekFile(tif, -(toff_t) sizeof (nextdir), SEEK_CUR); |
| 1018 | if (!WriteOK(tif, &diroff, sizeof (diroff))) { |
| 1019 | TIFFError(module, "Error writing directory link"); |
| 1020 | return (0); |
| 1021 | } |
| 1022 | return (1); |
| 1023 | } |