Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1995-1997 Sam Leffler |
| 3 | * Copyright (c) 1995-1997 Silicon Graphics, Inc. |
| 4 | * |
| 5 | * Permission to use, copy, modify, distribute, and sell this software and |
| 6 | * its documentation for any purpose is hereby granted without fee, provided |
| 7 | * that (i) the above copyright notices and this permission notice appear in |
| 8 | * all copies of the software and related documentation, and (ii) the names of |
| 9 | * Sam Leffler and Silicon Graphics may not be used in any advertising or |
| 10 | * publicity relating to the software without the specific, prior written |
| 11 | * permission of Sam Leffler and Silicon Graphics. |
| 12 | * |
| 13 | * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
| 14 | * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
| 15 | * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | * |
| 17 | * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
| 18 | * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
| 19 | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
| 20 | * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
| 21 | * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 22 | * OF THIS SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "tiffiop.h" |
| 26 | #ifdef ZIP_SUPPORT |
| 27 | /* |
| 28 | * TIFF Library. |
| 29 | * |
| 30 | * ZIP (aka Deflate) Compression Support |
| 31 | * |
| 32 | * This file is simply an interface to the zlib library written by |
| 33 | * Jean-loup Gailly and Mark Adler. You must use version 1.0 or later |
| 34 | * of the library: this code assumes the 1.0 API and also depends on |
| 35 | * the ability to write the zlib header multiple times (one per strip) |
| 36 | * which was not possible with versions prior to 0.95. Note also that |
| 37 | * older versions of this codec avoided this bug by suppressing the header |
| 38 | * entirely. This means that files written with the old library cannot |
| 39 | * be read; they should be converted to a different compression scheme |
| 40 | * and then reconverted. |
| 41 | * |
| 42 | * The data format used by the zlib library is described in the files |
| 43 | * zlib-3.1.doc, deflate-1.1.doc and gzip-4.1.doc, available in the |
| 44 | * directory ftp://ftp.uu.net/pub/archiving/zip/doc. The library was |
| 45 | * last found at ftp://ftp.uu.net/pub/archiving/zip/zlib/zlib-0.99.tar.gz. |
| 46 | */ |
| 47 | #include "tif_predict.h" |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 48 | #include "zlib.h" |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 49 | |
| 50 | #include <stdio.h> |
| 51 | |
| 52 | /* |
| 53 | * Sigh, ZLIB_VERSION is defined as a string so there's no |
| 54 | * way to do a proper check here. Instead we guess based |
| 55 | * on the presence of #defines that were added between the |
| 56 | * 0.95 and 1.0 distributions. |
| 57 | */ |
| 58 | #if !defined(Z_NO_COMPRESSION) || !defined(Z_DEFLATED) |
| 59 | #error "Antiquated ZLIB software; you must use version 1.0 or later" |
| 60 | #endif |
| 61 | |
| 62 | #define SAFE_MSG(sp) ((sp)->stream.msg == NULL ? "" : (sp)->stream.msg) |
| 63 | |
| 64 | /* |
| 65 | * State block for each open TIFF |
| 66 | * file using ZIP compression/decompression. |
| 67 | */ |
| 68 | typedef struct { |
| 69 | TIFFPredictorState predict; |
| 70 | z_stream stream; |
| 71 | int zipquality; /* compression level */ |
| 72 | int state; /* state flags */ |
| 73 | #define ZSTATE_INIT_DECODE 0x01 |
| 74 | #define ZSTATE_INIT_ENCODE 0x02 |
| 75 | |
| 76 | TIFFVGetMethod vgetparent; /* super-class method */ |
| 77 | TIFFVSetMethod vsetparent; /* super-class method */ |
| 78 | } ZIPState; |
| 79 | |
| 80 | #define ZState(tif) ((ZIPState*) (tif)->tif_data) |
| 81 | #define DecoderState(tif) ZState(tif) |
| 82 | #define EncoderState(tif) ZState(tif) |
| 83 | |
| 84 | static int ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s); |
| 85 | static int ZIPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s); |
| 86 | |
| 87 | static int |
| 88 | ZIPFixupTags(TIFF* tif) |
| 89 | { |
| 90 | (void) tif; |
| 91 | return (1); |
| 92 | } |
| 93 | |
| 94 | static int |
| 95 | ZIPSetupDecode(TIFF* tif) |
| 96 | { |
| 97 | static const char module[] = "ZIPSetupDecode"; |
| 98 | ZIPState* sp = DecoderState(tif); |
| 99 | |
| 100 | assert(sp != NULL); |
| 101 | |
| 102 | /* if we were last encoding, terminate this mode */ |
| 103 | if (sp->state & ZSTATE_INIT_ENCODE) { |
| 104 | deflateEnd(&sp->stream); |
| 105 | sp->state = 0; |
| 106 | } |
| 107 | |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 108 | /* This function can possibly be called several times by */ |
| 109 | /* PredictorSetupDecode() if this function succeeds but */ |
| 110 | /* PredictorSetup() fails */ |
| 111 | if ((sp->state & ZSTATE_INIT_DECODE) == 0 && |
| 112 | inflateInit(&sp->stream) != Z_OK) { |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 113 | TIFFErrorExt(tif->tif_clientdata, module, "%s", SAFE_MSG(sp)); |
| 114 | return (0); |
| 115 | } else { |
| 116 | sp->state |= ZSTATE_INIT_DECODE; |
| 117 | return (1); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | /* |
| 122 | * Setup state for decoding a strip. |
| 123 | */ |
| 124 | static int |
| 125 | ZIPPreDecode(TIFF* tif, uint16 s) |
| 126 | { |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 127 | ZIPState* sp = DecoderState(tif); |
| 128 | |
| 129 | (void) s; |
| 130 | assert(sp != NULL); |
| 131 | |
| 132 | if( (sp->state & ZSTATE_INIT_DECODE) == 0 ) |
| 133 | tif->tif_setupdecode( tif ); |
| 134 | |
| 135 | sp->stream.next_in = tif->tif_rawdata; |
| 136 | assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised, |
| 137 | we need to simplify this code to reflect a ZLib that is likely updated |
| 138 | to deal with 8byte memory sizes, though this code will respond |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 139 | appropriately even before we simplify it */ |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 140 | sp->stream.avail_in = (uint64)tif->tif_rawcc < 0xFFFFFFFFU ? (uInt) tif->tif_rawcc : 0xFFFFFFFFU; |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 141 | return (inflateReset(&sp->stream) == Z_OK); |
| 142 | } |
| 143 | |
| 144 | static int |
| 145 | ZIPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s) |
| 146 | { |
| 147 | static const char module[] = "ZIPDecode"; |
| 148 | ZIPState* sp = DecoderState(tif); |
| 149 | |
| 150 | (void) s; |
| 151 | assert(sp != NULL); |
| 152 | assert(sp->state == ZSTATE_INIT_DECODE); |
| 153 | |
| 154 | sp->stream.next_in = tif->tif_rawcp; |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 155 | |
| 156 | sp->stream.next_out = op; |
| 157 | assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised, |
| 158 | we need to simplify this code to reflect a ZLib that is likely updated |
| 159 | to deal with 8byte memory sizes, though this code will respond |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 160 | appropriately even before we simplify it */ |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 161 | do { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 162 | int state; |
| 163 | uInt avail_in_before = (uint64)tif->tif_rawcc <= 0xFFFFFFFFU ? (uInt)tif->tif_rawcc : 0xFFFFFFFFU; |
| 164 | uInt avail_out_before = (uint64)occ < 0xFFFFFFFFU ? (uInt) occ : 0xFFFFFFFFU; |
| 165 | sp->stream.avail_in = avail_in_before; |
| 166 | sp->stream.avail_out = avail_out_before; |
| 167 | state = inflate(&sp->stream, Z_PARTIAL_FLUSH); |
| 168 | tif->tif_rawcc -= (avail_in_before - sp->stream.avail_in); |
| 169 | occ -= (avail_out_before - sp->stream.avail_out); |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 170 | if (state == Z_STREAM_END) |
| 171 | break; |
| 172 | if (state == Z_DATA_ERROR) { |
| 173 | TIFFErrorExt(tif->tif_clientdata, module, |
| 174 | "Decoding error at scanline %lu, %s", |
| 175 | (unsigned long) tif->tif_row, SAFE_MSG(sp)); |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 176 | return (0); |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 177 | } |
| 178 | if (state != Z_OK) { |
| 179 | TIFFErrorExt(tif->tif_clientdata, module, |
| 180 | "ZLib error: %s", SAFE_MSG(sp)); |
| 181 | return (0); |
| 182 | } |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 183 | } while (occ > 0); |
| 184 | if (occ != 0) { |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 185 | TIFFErrorExt(tif->tif_clientdata, module, |
| 186 | "Not enough data at scanline %lu (short " TIFF_UINT64_FORMAT " bytes)", |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 187 | (unsigned long) tif->tif_row, (TIFF_UINT64_T) occ); |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 188 | return (0); |
| 189 | } |
| 190 | |
| 191 | tif->tif_rawcp = sp->stream.next_in; |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 192 | |
| 193 | return (1); |
| 194 | } |
| 195 | |
| 196 | static int |
| 197 | ZIPSetupEncode(TIFF* tif) |
| 198 | { |
| 199 | static const char module[] = "ZIPSetupEncode"; |
| 200 | ZIPState* sp = EncoderState(tif); |
| 201 | |
| 202 | assert(sp != NULL); |
| 203 | if (sp->state & ZSTATE_INIT_DECODE) { |
| 204 | inflateEnd(&sp->stream); |
| 205 | sp->state = 0; |
| 206 | } |
| 207 | |
| 208 | if (deflateInit(&sp->stream, sp->zipquality) != Z_OK) { |
| 209 | TIFFErrorExt(tif->tif_clientdata, module, "%s", SAFE_MSG(sp)); |
| 210 | return (0); |
| 211 | } else { |
| 212 | sp->state |= ZSTATE_INIT_ENCODE; |
| 213 | return (1); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | /* |
| 218 | * Reset encoding state at the start of a strip. |
| 219 | */ |
| 220 | static int |
| 221 | ZIPPreEncode(TIFF* tif, uint16 s) |
| 222 | { |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 223 | ZIPState *sp = EncoderState(tif); |
| 224 | |
| 225 | (void) s; |
| 226 | assert(sp != NULL); |
| 227 | if( sp->state != ZSTATE_INIT_ENCODE ) |
| 228 | tif->tif_setupencode( tif ); |
| 229 | |
| 230 | sp->stream.next_out = tif->tif_rawdata; |
| 231 | assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised, |
| 232 | we need to simplify this code to reflect a ZLib that is likely updated |
| 233 | to deal with 8byte memory sizes, though this code will respond |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 234 | appropriately even before we simplify it */ |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 235 | sp->stream.avail_out = (uint64)tif->tif_rawdatasize <= 0xFFFFFFFFU ? (uInt)tif->tif_rawdatasize : 0xFFFFFFFFU; |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 236 | return (deflateReset(&sp->stream) == Z_OK); |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * Encode a chunk of pixels. |
| 241 | */ |
| 242 | static int |
| 243 | ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) |
| 244 | { |
| 245 | static const char module[] = "ZIPEncode"; |
| 246 | ZIPState *sp = EncoderState(tif); |
| 247 | |
| 248 | assert(sp != NULL); |
| 249 | assert(sp->state == ZSTATE_INIT_ENCODE); |
| 250 | |
| 251 | (void) s; |
| 252 | sp->stream.next_in = bp; |
| 253 | assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised, |
| 254 | we need to simplify this code to reflect a ZLib that is likely updated |
| 255 | to deal with 8byte memory sizes, though this code will respond |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 256 | appropriately even before we simplify it */ |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 257 | do { |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 258 | uInt avail_in_before = (uint64)cc <= 0xFFFFFFFFU ? (uInt)cc : 0xFFFFFFFFU; |
| 259 | sp->stream.avail_in = avail_in_before; |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 260 | if (deflate(&sp->stream, Z_NO_FLUSH) != Z_OK) { |
| 261 | TIFFErrorExt(tif->tif_clientdata, module, |
| 262 | "Encoder error: %s", |
| 263 | SAFE_MSG(sp)); |
| 264 | return (0); |
| 265 | } |
| 266 | if (sp->stream.avail_out == 0) { |
| 267 | tif->tif_rawcc = tif->tif_rawdatasize; |
| 268 | TIFFFlushData1(tif); |
| 269 | sp->stream.next_out = tif->tif_rawdata; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 270 | sp->stream.avail_out = (uint64)tif->tif_rawdatasize <= 0xFFFFFFFFU ? (uInt)tif->tif_rawdatasize : 0xFFFFFFFFU; |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 271 | } |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 272 | cc -= (avail_in_before - sp->stream.avail_in); |
| 273 | } while (cc > 0); |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 274 | return (1); |
| 275 | } |
| 276 | |
| 277 | /* |
| 278 | * Finish off an encoded strip by flushing the last |
| 279 | * string and tacking on an End Of Information code. |
| 280 | */ |
| 281 | static int |
| 282 | ZIPPostEncode(TIFF* tif) |
| 283 | { |
| 284 | static const char module[] = "ZIPPostEncode"; |
| 285 | ZIPState *sp = EncoderState(tif); |
| 286 | int state; |
| 287 | |
| 288 | sp->stream.avail_in = 0; |
| 289 | do { |
| 290 | state = deflate(&sp->stream, Z_FINISH); |
| 291 | switch (state) { |
| 292 | case Z_STREAM_END: |
| 293 | case Z_OK: |
| 294 | if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) |
| 295 | { |
| 296 | tif->tif_rawcc = tif->tif_rawdatasize - sp->stream.avail_out; |
| 297 | TIFFFlushData1(tif); |
| 298 | sp->stream.next_out = tif->tif_rawdata; |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame] | 299 | sp->stream.avail_out = (uint64)tif->tif_rawdatasize <= 0xFFFFFFFFU ? (uInt)tif->tif_rawdatasize : 0xFFFFFFFFU; |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 300 | } |
| 301 | break; |
| 302 | default: |
| 303 | TIFFErrorExt(tif->tif_clientdata, module, |
| 304 | "ZLib error: %s", SAFE_MSG(sp)); |
| 305 | return (0); |
| 306 | } |
| 307 | } while (state != Z_STREAM_END); |
| 308 | return (1); |
| 309 | } |
| 310 | |
| 311 | static void |
| 312 | ZIPCleanup(TIFF* tif) |
| 313 | { |
| 314 | ZIPState* sp = ZState(tif); |
| 315 | |
| 316 | assert(sp != 0); |
| 317 | |
| 318 | (void)TIFFPredictorCleanup(tif); |
| 319 | |
| 320 | tif->tif_tagmethods.vgetfield = sp->vgetparent; |
| 321 | tif->tif_tagmethods.vsetfield = sp->vsetparent; |
| 322 | |
| 323 | if (sp->state & ZSTATE_INIT_ENCODE) { |
| 324 | deflateEnd(&sp->stream); |
| 325 | sp->state = 0; |
| 326 | } else if( sp->state & ZSTATE_INIT_DECODE) { |
| 327 | inflateEnd(&sp->stream); |
| 328 | sp->state = 0; |
| 329 | } |
| 330 | _TIFFfree(sp); |
| 331 | tif->tif_data = NULL; |
| 332 | |
| 333 | _TIFFSetDefaultCompressionState(tif); |
| 334 | } |
| 335 | |
| 336 | static int |
| 337 | ZIPVSetField(TIFF* tif, uint32 tag, va_list ap) |
| 338 | { |
| 339 | static const char module[] = "ZIPVSetField"; |
| 340 | ZIPState* sp = ZState(tif); |
| 341 | |
| 342 | switch (tag) { |
| 343 | case TIFFTAG_ZIPQUALITY: |
| 344 | sp->zipquality = (int) va_arg(ap, int); |
| 345 | if ( sp->state&ZSTATE_INIT_ENCODE ) { |
| 346 | if (deflateParams(&sp->stream, |
| 347 | sp->zipquality, Z_DEFAULT_STRATEGY) != Z_OK) { |
| 348 | TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s", |
| 349 | SAFE_MSG(sp)); |
| 350 | return (0); |
| 351 | } |
| 352 | } |
| 353 | return (1); |
| 354 | default: |
| 355 | return (*sp->vsetparent)(tif, tag, ap); |
| 356 | } |
| 357 | /*NOTREACHED*/ |
| 358 | } |
| 359 | |
| 360 | static int |
| 361 | ZIPVGetField(TIFF* tif, uint32 tag, va_list ap) |
| 362 | { |
| 363 | ZIPState* sp = ZState(tif); |
| 364 | |
| 365 | switch (tag) { |
| 366 | case TIFFTAG_ZIPQUALITY: |
| 367 | *va_arg(ap, int*) = sp->zipquality; |
| 368 | break; |
| 369 | default: |
| 370 | return (*sp->vgetparent)(tif, tag, ap); |
| 371 | } |
| 372 | return (1); |
| 373 | } |
| 374 | |
| 375 | static const TIFFField zipFields[] = { |
| 376 | { TIFFTAG_ZIPQUALITY, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "", NULL }, |
| 377 | }; |
| 378 | |
| 379 | int |
| 380 | TIFFInitZIP(TIFF* tif, int scheme) |
| 381 | { |
| 382 | static const char module[] = "TIFFInitZIP"; |
| 383 | ZIPState* sp; |
| 384 | |
| 385 | assert( (scheme == COMPRESSION_DEFLATE) |
| 386 | || (scheme == COMPRESSION_ADOBE_DEFLATE)); |
| 387 | |
| 388 | /* |
| 389 | * Merge codec-specific tag information. |
| 390 | */ |
| 391 | if (!_TIFFMergeFields(tif, zipFields, TIFFArrayCount(zipFields))) { |
| 392 | TIFFErrorExt(tif->tif_clientdata, module, |
| 393 | "Merging Deflate codec-specific tags failed"); |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * Allocate state block so tag methods have storage to record values. |
| 399 | */ |
| 400 | tif->tif_data = (uint8*) _TIFFmalloc(sizeof (ZIPState)); |
| 401 | if (tif->tif_data == NULL) |
| 402 | goto bad; |
| 403 | sp = ZState(tif); |
| 404 | sp->stream.zalloc = NULL; |
| 405 | sp->stream.zfree = NULL; |
| 406 | sp->stream.opaque = NULL; |
| 407 | sp->stream.data_type = Z_BINARY; |
| 408 | |
| 409 | /* |
| 410 | * Override parent get/set field methods. |
| 411 | */ |
| 412 | sp->vgetparent = tif->tif_tagmethods.vgetfield; |
| 413 | tif->tif_tagmethods.vgetfield = ZIPVGetField; /* hook for codec tags */ |
| 414 | sp->vsetparent = tif->tif_tagmethods.vsetfield; |
| 415 | tif->tif_tagmethods.vsetfield = ZIPVSetField; /* hook for codec tags */ |
| 416 | |
| 417 | /* Default values for codec-specific fields */ |
| 418 | sp->zipquality = Z_DEFAULT_COMPRESSION; /* default comp. level */ |
| 419 | sp->state = 0; |
| 420 | |
| 421 | /* |
| 422 | * Install codec methods. |
| 423 | */ |
| 424 | tif->tif_fixuptags = ZIPFixupTags; |
| 425 | tif->tif_setupdecode = ZIPSetupDecode; |
| 426 | tif->tif_predecode = ZIPPreDecode; |
| 427 | tif->tif_decoderow = ZIPDecode; |
| 428 | tif->tif_decodestrip = ZIPDecode; |
| 429 | tif->tif_decodetile = ZIPDecode; |
| 430 | tif->tif_setupencode = ZIPSetupEncode; |
| 431 | tif->tif_preencode = ZIPPreEncode; |
| 432 | tif->tif_postencode = ZIPPostEncode; |
| 433 | tif->tif_encoderow = ZIPEncode; |
| 434 | tif->tif_encodestrip = ZIPEncode; |
| 435 | tif->tif_encodetile = ZIPEncode; |
| 436 | tif->tif_cleanup = ZIPCleanup; |
| 437 | /* |
| 438 | * Setup predictor setup. |
| 439 | */ |
| 440 | (void) TIFFPredictorInit(tif); |
| 441 | return (1); |
| 442 | bad: |
| 443 | TIFFErrorExt(tif->tif_clientdata, module, |
| 444 | "No space for ZIP state block"); |
| 445 | return (0); |
| 446 | } |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 447 | #endif /* ZIP_SUPPORT */ |
Philip P. Moltmann | ac3d58c | 2016-03-04 15:19:21 -0800 | [diff] [blame] | 448 | |
| 449 | /* vim: set ts=8 sts=8 sw=8 noet: */ |
| 450 | /* |
| 451 | * Local Variables: |
| 452 | * mode: c |
| 453 | * c-basic-offset: 8 |
| 454 | * fill-column: 78 |
| 455 | * End: |
| 456 | */ |