| 1 | /* |
| 2 | * Copyright (c) 2006 Konstantin Shishkov |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | * @file |
| 23 | * TIFF image decoder |
| 24 | * @author Konstantin Shishkov |
| 25 | */ |
| 26 | |
| 27 | #include "config.h" |
| 28 | #if CONFIG_ZLIB |
| 29 | #include <zlib.h> |
| 30 | #endif |
| 31 | #if CONFIG_LZMA |
| 32 | #include <lzma.h> |
| 33 | #endif |
| 34 | |
| 35 | #include "libavutil/attributes.h" |
| 36 | #include "libavutil/avstring.h" |
| 37 | #include "libavutil/intreadwrite.h" |
| 38 | #include "libavutil/imgutils.h" |
| 39 | #include "avcodec.h" |
| 40 | #include "bytestream.h" |
| 41 | #include "faxcompr.h" |
| 42 | #include "internal.h" |
| 43 | #include "lzw.h" |
| 44 | #include "mathops.h" |
| 45 | #include "tiff.h" |
| 46 | #include "tiff_data.h" |
| 47 | #include "thread.h" |
| 48 | |
| 49 | typedef struct TiffContext { |
| 50 | AVCodecContext *avctx; |
| 51 | GetByteContext gb; |
| 52 | |
| 53 | int width, height; |
| 54 | unsigned int bpp, bppcount; |
| 55 | uint32_t palette[256]; |
| 56 | int palette_is_set; |
| 57 | int le; |
| 58 | enum TiffCompr compr; |
| 59 | enum TiffPhotometric photometric; |
| 60 | int planar; |
| 61 | int subsampling[2]; |
| 62 | int fax_opts; |
| 63 | int predictor; |
| 64 | int fill_order; |
| 65 | uint32_t res[4]; |
| 66 | |
| 67 | int strips, rps, sstype; |
| 68 | int sot; |
| 69 | int stripsizesoff, stripsize, stripoff, strippos; |
| 70 | LZWState *lzw; |
| 71 | |
| 72 | uint8_t *deinvert_buf; |
| 73 | int deinvert_buf_size; |
| 74 | uint8_t *yuv_line; |
| 75 | unsigned int yuv_line_size; |
| 76 | |
| 77 | int geotag_count; |
| 78 | TiffGeoTag *geotags; |
| 79 | } TiffContext; |
| 80 | |
| 81 | static void free_geotags(TiffContext *const s) |
| 82 | { |
| 83 | int i; |
| 84 | for (i = 0; i < s->geotag_count; i++) { |
| 85 | if (s->geotags[i].val) |
| 86 | av_freep(&s->geotags[i].val); |
| 87 | } |
| 88 | av_freep(&s->geotags); |
| 89 | s->geotag_count = 0; |
| 90 | } |
| 91 | |
| 92 | #define RET_GEOKEY(TYPE, array, element)\ |
| 93 | if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\ |
| 94 | key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\ |
| 95 | return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element; |
| 96 | |
| 97 | static const char *get_geokey_name(int key) |
| 98 | { |
| 99 | RET_GEOKEY(VERT, vert, name); |
| 100 | RET_GEOKEY(PROJ, proj, name); |
| 101 | RET_GEOKEY(GEOG, geog, name); |
| 102 | RET_GEOKEY(CONF, conf, name); |
| 103 | |
| 104 | return NULL; |
| 105 | } |
| 106 | |
| 107 | static int get_geokey_type(int key) |
| 108 | { |
| 109 | RET_GEOKEY(VERT, vert, type); |
| 110 | RET_GEOKEY(PROJ, proj, type); |
| 111 | RET_GEOKEY(GEOG, geog, type); |
| 112 | RET_GEOKEY(CONF, conf, type); |
| 113 | |
| 114 | return AVERROR_INVALIDDATA; |
| 115 | } |
| 116 | |
| 117 | static int cmp_id_key(const void *id, const void *k) |
| 118 | { |
| 119 | return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key; |
| 120 | } |
| 121 | |
| 122 | static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id) |
| 123 | { |
| 124 | TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key); |
| 125 | if(r) |
| 126 | return r->name; |
| 127 | |
| 128 | return NULL; |
| 129 | } |
| 130 | |
| 131 | static char *get_geokey_val(int key, int val) |
| 132 | { |
| 133 | char *ap; |
| 134 | |
| 135 | if (val == TIFF_GEO_KEY_UNDEFINED) |
| 136 | return av_strdup("undefined"); |
| 137 | if (val == TIFF_GEO_KEY_USER_DEFINED) |
| 138 | return av_strdup("User-Defined"); |
| 139 | |
| 140 | #define RET_GEOKEY_VAL(TYPE, array)\ |
| 141 | if (val >= TIFF_##TYPE##_OFFSET &&\ |
| 142 | val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\ |
| 143 | return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]); |
| 144 | |
| 145 | switch (key) { |
| 146 | case TIFF_GT_MODEL_TYPE_GEOKEY: |
| 147 | RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type); |
| 148 | break; |
| 149 | case TIFF_GT_RASTER_TYPE_GEOKEY: |
| 150 | RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type); |
| 151 | break; |
| 152 | case TIFF_GEOG_LINEAR_UNITS_GEOKEY: |
| 153 | case TIFF_PROJ_LINEAR_UNITS_GEOKEY: |
| 154 | case TIFF_VERTICAL_UNITS_GEOKEY: |
| 155 | RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit); |
| 156 | break; |
| 157 | case TIFF_GEOG_ANGULAR_UNITS_GEOKEY: |
| 158 | case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY: |
| 159 | RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit); |
| 160 | break; |
| 161 | case TIFF_GEOGRAPHIC_TYPE_GEOKEY: |
| 162 | RET_GEOKEY_VAL(GCS_TYPE, gcs_type); |
| 163 | RET_GEOKEY_VAL(GCSE_TYPE, gcse_type); |
| 164 | break; |
| 165 | case TIFF_GEOG_GEODETIC_DATUM_GEOKEY: |
| 166 | RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum); |
| 167 | RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e); |
| 168 | break; |
| 169 | case TIFF_GEOG_ELLIPSOID_GEOKEY: |
| 170 | RET_GEOKEY_VAL(ELLIPSOID, ellipsoid); |
| 171 | break; |
| 172 | case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY: |
| 173 | RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian); |
| 174 | break; |
| 175 | case TIFF_PROJECTED_CS_TYPE_GEOKEY: |
| 176 | ap = av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val)); |
| 177 | if(ap) return ap; |
| 178 | break; |
| 179 | case TIFF_PROJECTION_GEOKEY: |
| 180 | ap = av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val)); |
| 181 | if(ap) return ap; |
| 182 | break; |
| 183 | case TIFF_PROJ_COORD_TRANS_GEOKEY: |
| 184 | RET_GEOKEY_VAL(COORD_TRANS, coord_trans); |
| 185 | break; |
| 186 | case TIFF_VERTICAL_CS_TYPE_GEOKEY: |
| 187 | RET_GEOKEY_VAL(VERT_CS, vert_cs); |
| 188 | RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs); |
| 189 | break; |
| 190 | |
| 191 | } |
| 192 | |
| 193 | ap = av_malloc(14); |
| 194 | if (ap) |
| 195 | snprintf(ap, 14, "Unknown-%d", val); |
| 196 | return ap; |
| 197 | } |
| 198 | |
| 199 | static char *doubles2str(double *dp, int count, const char *sep) |
| 200 | { |
| 201 | int i; |
| 202 | char *ap, *ap0; |
| 203 | uint64_t component_len; |
| 204 | if (!sep) sep = ", "; |
| 205 | component_len = 24LL + strlen(sep); |
| 206 | if (count >= (INT_MAX - 1)/component_len) |
| 207 | return NULL; |
| 208 | ap = av_malloc(component_len * count + 1); |
| 209 | if (!ap) |
| 210 | return NULL; |
| 211 | ap0 = ap; |
| 212 | ap[0] = '\0'; |
| 213 | for (i = 0; i < count; i++) { |
| 214 | unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep); |
| 215 | if(l >= component_len) { |
| 216 | av_free(ap0); |
| 217 | return NULL; |
| 218 | } |
| 219 | ap += l; |
| 220 | } |
| 221 | ap0[strlen(ap0) - strlen(sep)] = '\0'; |
| 222 | return ap0; |
| 223 | } |
| 224 | |
| 225 | static int add_metadata(int count, int type, |
| 226 | const char *name, const char *sep, TiffContext *s, AVFrame *frame) |
| 227 | { |
| 228 | switch(type) { |
| 229 | case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, avpriv_frame_get_metadatap(frame)); |
| 230 | case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, avpriv_frame_get_metadatap(frame)); |
| 231 | case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, avpriv_frame_get_metadatap(frame)); |
| 232 | default : return AVERROR_INVALIDDATA; |
| 233 | }; |
| 234 | } |
| 235 | |
| 236 | static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst, |
| 237 | int usePtr, const uint8_t *src, |
| 238 | uint8_t c, int width, int offset) |
| 239 | { |
| 240 | switch (bpp) { |
| 241 | case 1: |
| 242 | while (--width >= 0) { |
| 243 | dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1; |
| 244 | dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1; |
| 245 | dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1; |
| 246 | dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1; |
| 247 | dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1; |
| 248 | dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1; |
| 249 | dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1; |
| 250 | dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7; |
| 251 | } |
| 252 | break; |
| 253 | case 2: |
| 254 | while (--width >= 0) { |
| 255 | dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3; |
| 256 | dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3; |
| 257 | dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3; |
| 258 | dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6; |
| 259 | } |
| 260 | break; |
| 261 | case 4: |
| 262 | while (--width >= 0) { |
| 263 | dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF; |
| 264 | dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4; |
| 265 | } |
| 266 | break; |
| 267 | default: |
| 268 | if (usePtr) { |
| 269 | memcpy(dst + offset, src, width); |
| 270 | } else { |
| 271 | memset(dst + offset, c, width); |
| 272 | } |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size) |
| 277 | { |
| 278 | int i; |
| 279 | |
| 280 | av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size); |
| 281 | if (!s->deinvert_buf) |
| 282 | return AVERROR(ENOMEM); |
| 283 | for (i = 0; i < size; i++) |
| 284 | s->deinvert_buf[i] = ff_reverse[src[i]]; |
| 285 | |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | static void unpack_yuv(TiffContext *s, AVFrame *p, |
| 290 | const uint8_t *src, int lnum) |
| 291 | { |
| 292 | int i, j, k; |
| 293 | int w = (s->width - 1) / s->subsampling[0] + 1; |
| 294 | uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]]; |
| 295 | uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]]; |
| 296 | if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) { |
| 297 | for (i = 0; i < w; i++) { |
| 298 | for (j = 0; j < s->subsampling[1]; j++) |
| 299 | for (k = 0; k < s->subsampling[0]; k++) |
| 300 | p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] + |
| 301 | FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++; |
| 302 | *pu++ = *src++; |
| 303 | *pv++ = *src++; |
| 304 | } |
| 305 | }else{ |
| 306 | for (i = 0; i < w; i++) { |
| 307 | for (j = 0; j < s->subsampling[1]; j++) |
| 308 | for (k = 0; k < s->subsampling[0]; k++) |
| 309 | p->data[0][(lnum + j) * p->linesize[0] + |
| 310 | i * s->subsampling[0] + k] = *src++; |
| 311 | *pu++ = *src++; |
| 312 | *pv++ = *src++; |
| 313 | } |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | #if CONFIG_ZLIB |
| 318 | static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src, |
| 319 | int size) |
| 320 | { |
| 321 | z_stream zstream = { 0 }; |
| 322 | int zret; |
| 323 | |
| 324 | zstream.next_in = (uint8_t *)src; |
| 325 | zstream.avail_in = size; |
| 326 | zstream.next_out = dst; |
| 327 | zstream.avail_out = *len; |
| 328 | zret = inflateInit(&zstream); |
| 329 | if (zret != Z_OK) { |
| 330 | av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret); |
| 331 | return zret; |
| 332 | } |
| 333 | zret = inflate(&zstream, Z_SYNC_FLUSH); |
| 334 | inflateEnd(&zstream); |
| 335 | *len = zstream.total_out; |
| 336 | return zret == Z_STREAM_END ? Z_OK : zret; |
| 337 | } |
| 338 | |
| 339 | static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride, |
| 340 | const uint8_t *src, int size, int width, int lines, |
| 341 | int strip_start, int is_yuv) |
| 342 | { |
| 343 | uint8_t *zbuf; |
| 344 | unsigned long outlen; |
| 345 | int ret, line; |
| 346 | outlen = width * lines; |
| 347 | zbuf = av_malloc(outlen); |
| 348 | if (!zbuf) |
| 349 | return AVERROR(ENOMEM); |
| 350 | if (s->fill_order) { |
| 351 | if ((ret = deinvert_buffer(s, src, size)) < 0) { |
| 352 | av_free(zbuf); |
| 353 | return ret; |
| 354 | } |
| 355 | src = s->deinvert_buf; |
| 356 | } |
| 357 | ret = tiff_uncompress(zbuf, &outlen, src, size); |
| 358 | if (ret != Z_OK) { |
| 359 | av_log(s->avctx, AV_LOG_ERROR, |
| 360 | "Uncompressing failed (%lu of %lu) with error %d\n", outlen, |
| 361 | (unsigned long)width * lines, ret); |
| 362 | av_free(zbuf); |
| 363 | return AVERROR_UNKNOWN; |
| 364 | } |
| 365 | src = zbuf; |
| 366 | for (line = 0; line < lines; line++) { |
| 367 | if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
| 368 | horizontal_fill(s->bpp, dst, 1, src, 0, width, 0); |
| 369 | } else { |
| 370 | memcpy(dst, src, width); |
| 371 | } |
| 372 | if (is_yuv) { |
| 373 | unpack_yuv(s, p, dst, strip_start + line); |
| 374 | line += s->subsampling[1] - 1; |
| 375 | } |
| 376 | dst += stride; |
| 377 | src += width; |
| 378 | } |
| 379 | av_free(zbuf); |
| 380 | return 0; |
| 381 | } |
| 382 | #endif |
| 383 | |
| 384 | #if CONFIG_LZMA |
| 385 | static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src, |
| 386 | int size) |
| 387 | { |
| 388 | lzma_stream stream = LZMA_STREAM_INIT; |
| 389 | lzma_ret ret; |
| 390 | |
| 391 | stream.next_in = (uint8_t *)src; |
| 392 | stream.avail_in = size; |
| 393 | stream.next_out = dst; |
| 394 | stream.avail_out = *len; |
| 395 | ret = lzma_stream_decoder(&stream, UINT64_MAX, 0); |
| 396 | if (ret != LZMA_OK) { |
| 397 | av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret); |
| 398 | return ret; |
| 399 | } |
| 400 | ret = lzma_code(&stream, LZMA_RUN); |
| 401 | lzma_end(&stream); |
| 402 | *len = stream.total_out; |
| 403 | return ret == LZMA_STREAM_END ? LZMA_OK : ret; |
| 404 | } |
| 405 | |
| 406 | static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride, |
| 407 | const uint8_t *src, int size, int width, int lines, |
| 408 | int strip_start, int is_yuv) |
| 409 | { |
| 410 | uint64_t outlen = width * lines; |
| 411 | int ret, line; |
| 412 | uint8_t *buf = av_malloc(outlen); |
| 413 | if (!buf) |
| 414 | return AVERROR(ENOMEM); |
| 415 | if (s->fill_order) { |
| 416 | if ((ret = deinvert_buffer(s, src, size)) < 0) { |
| 417 | av_free(buf); |
| 418 | return ret; |
| 419 | } |
| 420 | src = s->deinvert_buf; |
| 421 | } |
| 422 | ret = tiff_uncompress_lzma(buf, &outlen, src, size); |
| 423 | if (ret != LZMA_OK) { |
| 424 | av_log(s->avctx, AV_LOG_ERROR, |
| 425 | "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen, |
| 426 | (uint64_t)width * lines, ret); |
| 427 | av_free(buf); |
| 428 | return AVERROR_UNKNOWN; |
| 429 | } |
| 430 | src = buf; |
| 431 | for (line = 0; line < lines; line++) { |
| 432 | if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
| 433 | horizontal_fill(s->bpp, dst, 1, src, 0, width, 0); |
| 434 | } else { |
| 435 | memcpy(dst, src, width); |
| 436 | } |
| 437 | if (is_yuv) { |
| 438 | unpack_yuv(s, p, dst, strip_start + line); |
| 439 | line += s->subsampling[1] - 1; |
| 440 | } |
| 441 | dst += stride; |
| 442 | src += width; |
| 443 | } |
| 444 | av_free(buf); |
| 445 | return 0; |
| 446 | } |
| 447 | #endif |
| 448 | |
| 449 | static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride, |
| 450 | const uint8_t *src, int size, int width, int lines) |
| 451 | { |
| 452 | int i, ret = 0; |
| 453 | int line; |
| 454 | uint8_t *src2 = av_malloc((unsigned)size + |
| 455 | FF_INPUT_BUFFER_PADDING_SIZE); |
| 456 | |
| 457 | if (!src2) { |
| 458 | av_log(s->avctx, AV_LOG_ERROR, |
| 459 | "Error allocating temporary buffer\n"); |
| 460 | return AVERROR(ENOMEM); |
| 461 | } |
| 462 | if (s->fax_opts & 2) { |
| 463 | avpriv_request_sample(s->avctx, "Uncompressed fax mode"); |
| 464 | av_free(src2); |
| 465 | return AVERROR_PATCHWELCOME; |
| 466 | } |
| 467 | if (!s->fill_order) { |
| 468 | memcpy(src2, src, size); |
| 469 | } else { |
| 470 | for (i = 0; i < size; i++) |
| 471 | src2[i] = ff_reverse[src[i]]; |
| 472 | } |
| 473 | memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE); |
| 474 | ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride, |
| 475 | s->compr, s->fax_opts); |
| 476 | if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) |
| 477 | for (line = 0; line < lines; line++) { |
| 478 | horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0); |
| 479 | dst += stride; |
| 480 | } |
| 481 | av_free(src2); |
| 482 | return ret; |
| 483 | } |
| 484 | |
| 485 | static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride, |
| 486 | const uint8_t *src, int size, int strip_start, int lines) |
| 487 | { |
| 488 | PutByteContext pb; |
| 489 | int c, line, pixels, code, ret; |
| 490 | const uint8_t *ssrc = src; |
| 491 | int width = ((s->width * s->bpp) + 7) >> 3; |
| 492 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format); |
| 493 | int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) && |
| 494 | (desc->flags & AV_PIX_FMT_FLAG_PLANAR) && |
| 495 | desc->nb_components >= 3; |
| 496 | |
| 497 | if (s->planar) |
| 498 | width /= s->bppcount; |
| 499 | |
| 500 | if (size <= 0) |
| 501 | return AVERROR_INVALIDDATA; |
| 502 | |
| 503 | if (is_yuv) { |
| 504 | int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp * |
| 505 | s->subsampling[0] * s->subsampling[1] + 7) >> 3; |
| 506 | av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row); |
| 507 | if (s->yuv_line == NULL) { |
| 508 | av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n"); |
| 509 | return AVERROR(ENOMEM); |
| 510 | } |
| 511 | dst = s->yuv_line; |
| 512 | stride = 0; |
| 513 | width = s->width * s->subsampling[1] + 2*(s->width / s->subsampling[0]); |
| 514 | av_assert0(width <= bytes_per_row); |
| 515 | av_assert0(s->bpp == 24); |
| 516 | } |
| 517 | |
| 518 | if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) { |
| 519 | #if CONFIG_ZLIB |
| 520 | return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines, |
| 521 | strip_start, is_yuv); |
| 522 | #else |
| 523 | av_log(s->avctx, AV_LOG_ERROR, |
| 524 | "zlib support not enabled, " |
| 525 | "deflate compression not supported\n"); |
| 526 | return AVERROR(ENOSYS); |
| 527 | #endif |
| 528 | } |
| 529 | if (s->compr == TIFF_LZMA) { |
| 530 | #if CONFIG_LZMA |
| 531 | return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines, |
| 532 | strip_start, is_yuv); |
| 533 | #else |
| 534 | av_log(s->avctx, AV_LOG_ERROR, |
| 535 | "LZMA support not enabled\n"); |
| 536 | return AVERROR(ENOSYS); |
| 537 | #endif |
| 538 | } |
| 539 | if (s->compr == TIFF_LZW) { |
| 540 | if (s->fill_order) { |
| 541 | if ((ret = deinvert_buffer(s, src, size)) < 0) |
| 542 | return ret; |
| 543 | ssrc = src = s->deinvert_buf; |
| 544 | } |
| 545 | if (size > 1 && !src[0] && (src[1]&1)) { |
| 546 | av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n"); |
| 547 | } |
| 548 | if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) { |
| 549 | av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n"); |
| 550 | return ret; |
| 551 | } |
| 552 | for (line = 0; line < lines; line++) { |
| 553 | pixels = ff_lzw_decode(s->lzw, dst, width); |
| 554 | if (pixels < width) { |
| 555 | av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n", |
| 556 | pixels, width); |
| 557 | return AVERROR_INVALIDDATA; |
| 558 | } |
| 559 | if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) |
| 560 | horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0); |
| 561 | if (is_yuv) { |
| 562 | unpack_yuv(s, p, dst, strip_start + line); |
| 563 | line += s->subsampling[1] - 1; |
| 564 | } |
| 565 | dst += stride; |
| 566 | } |
| 567 | return 0; |
| 568 | } |
| 569 | if (s->compr == TIFF_CCITT_RLE || |
| 570 | s->compr == TIFF_G3 || |
| 571 | s->compr == TIFF_G4) { |
| 572 | if (is_yuv) |
| 573 | return AVERROR_INVALIDDATA; |
| 574 | |
| 575 | return tiff_unpack_fax(s, dst, stride, src, size, width, lines); |
| 576 | } |
| 577 | |
| 578 | bytestream2_init(&s->gb, src, size); |
| 579 | bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines)); |
| 580 | |
| 581 | for (line = 0; line < lines; line++) { |
| 582 | if (src - ssrc > size) { |
| 583 | av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n"); |
| 584 | return AVERROR_INVALIDDATA; |
| 585 | } |
| 586 | |
| 587 | if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb)) |
| 588 | break; |
| 589 | bytestream2_seek_p(&pb, stride * line, SEEK_SET); |
| 590 | switch (s->compr) { |
| 591 | case TIFF_RAW: |
| 592 | if (ssrc + size - src < width) |
| 593 | return AVERROR_INVALIDDATA; |
| 594 | |
| 595 | if (!s->fill_order) { |
| 596 | horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), |
| 597 | dst, 1, src, 0, width, 0); |
| 598 | } else { |
| 599 | int i; |
| 600 | for (i = 0; i < width; i++) |
| 601 | dst[i] = ff_reverse[src[i]]; |
| 602 | } |
| 603 | src += width; |
| 604 | break; |
| 605 | case TIFF_PACKBITS: |
| 606 | for (pixels = 0; pixels < width;) { |
| 607 | if (ssrc + size - src < 2) { |
| 608 | av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n"); |
| 609 | return AVERROR_INVALIDDATA; |
| 610 | } |
| 611 | code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++; |
| 612 | if (code >= 0) { |
| 613 | code++; |
| 614 | if (pixels + code > width || |
| 615 | ssrc + size - src < code) { |
| 616 | av_log(s->avctx, AV_LOG_ERROR, |
| 617 | "Copy went out of bounds\n"); |
| 618 | return AVERROR_INVALIDDATA; |
| 619 | } |
| 620 | horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), |
| 621 | dst, 1, src, 0, code, pixels); |
| 622 | src += code; |
| 623 | pixels += code; |
| 624 | } else if (code != -128) { // -127..-1 |
| 625 | code = (-code) + 1; |
| 626 | if (pixels + code > width) { |
| 627 | av_log(s->avctx, AV_LOG_ERROR, |
| 628 | "Run went out of bounds\n"); |
| 629 | return AVERROR_INVALIDDATA; |
| 630 | } |
| 631 | c = *src++; |
| 632 | horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8), |
| 633 | dst, 0, NULL, c, code, pixels); |
| 634 | pixels += code; |
| 635 | } |
| 636 | } |
| 637 | if (s->fill_order) { |
| 638 | int i; |
| 639 | for (i = 0; i < width; i++) |
| 640 | dst[i] = ff_reverse[dst[i]]; |
| 641 | } |
| 642 | break; |
| 643 | } |
| 644 | if (is_yuv) { |
| 645 | unpack_yuv(s, p, dst, strip_start + line); |
| 646 | line += s->subsampling[1] - 1; |
| 647 | } |
| 648 | dst += stride; |
| 649 | } |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | static int init_image(TiffContext *s, ThreadFrame *frame) |
| 654 | { |
| 655 | int ret; |
| 656 | int create_gray_palette = 0; |
| 657 | |
| 658 | switch (s->planar * 1000 + s->bpp * 10 + s->bppcount) { |
| 659 | case 11: |
| 660 | if (!s->palette_is_set) { |
| 661 | s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK; |
| 662 | break; |
| 663 | } |
| 664 | case 21: |
| 665 | case 41: |
| 666 | s->avctx->pix_fmt = AV_PIX_FMT_PAL8; |
| 667 | if (!s->palette_is_set) { |
| 668 | create_gray_palette = 1; |
| 669 | } |
| 670 | break; |
| 671 | case 81: |
| 672 | s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8; |
| 673 | break; |
| 674 | case 243: |
| 675 | if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) { |
| 676 | if (s->subsampling[0] == 1 && s->subsampling[1] == 1) { |
| 677 | s->avctx->pix_fmt = AV_PIX_FMT_YUV444P; |
| 678 | } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) { |
| 679 | s->avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| 680 | } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) { |
| 681 | s->avctx->pix_fmt = AV_PIX_FMT_YUV411P; |
| 682 | } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) { |
| 683 | s->avctx->pix_fmt = AV_PIX_FMT_YUV440P; |
| 684 | } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) { |
| 685 | s->avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| 686 | } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) { |
| 687 | s->avctx->pix_fmt = AV_PIX_FMT_YUV410P; |
| 688 | } else { |
| 689 | av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n"); |
| 690 | return AVERROR_PATCHWELCOME; |
| 691 | } |
| 692 | } else |
| 693 | s->avctx->pix_fmt = AV_PIX_FMT_RGB24; |
| 694 | break; |
| 695 | case 161: |
| 696 | s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE; |
| 697 | break; |
| 698 | case 162: |
| 699 | s->avctx->pix_fmt = AV_PIX_FMT_YA8; |
| 700 | break; |
| 701 | case 322: |
| 702 | s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE; |
| 703 | break; |
| 704 | case 324: |
| 705 | s->avctx->pix_fmt = AV_PIX_FMT_RGBA; |
| 706 | break; |
| 707 | case 483: |
| 708 | s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE; |
| 709 | break; |
| 710 | case 644: |
| 711 | s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE; |
| 712 | break; |
| 713 | case 1243: |
| 714 | s->avctx->pix_fmt = AV_PIX_FMT_GBRP; |
| 715 | break; |
| 716 | case 1324: |
| 717 | s->avctx->pix_fmt = AV_PIX_FMT_GBRAP; |
| 718 | break; |
| 719 | case 1483: |
| 720 | s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE; |
| 721 | break; |
| 722 | case 1644: |
| 723 | s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE; |
| 724 | break; |
| 725 | default: |
| 726 | av_log(s->avctx, AV_LOG_ERROR, |
| 727 | "This format is not supported (bpp=%d, bppcount=%d)\n", |
| 728 | s->bpp, s->bppcount); |
| 729 | return AVERROR_INVALIDDATA; |
| 730 | } |
| 731 | |
| 732 | if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) { |
| 733 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt); |
| 734 | if((desc->flags & AV_PIX_FMT_FLAG_RGB) || |
| 735 | !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) || |
| 736 | desc->nb_components < 3) { |
| 737 | av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n"); |
| 738 | return AVERROR_INVALIDDATA; |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | if (s->width != s->avctx->width || s->height != s->avctx->height) { |
| 743 | ret = ff_set_dimensions(s->avctx, s->width, s->height); |
| 744 | if (ret < 0) |
| 745 | return ret; |
| 746 | } |
| 747 | if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0) |
| 748 | return ret; |
| 749 | if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
| 750 | if (!create_gray_palette) |
| 751 | memcpy(frame->f->data[1], s->palette, sizeof(s->palette)); |
| 752 | else { |
| 753 | /* make default grayscale pal */ |
| 754 | int i; |
| 755 | uint32_t *pal = (uint32_t *)frame->f->data[1]; |
| 756 | for (i = 0; i < 1<<s->bpp; i++) |
| 757 | pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101; |
| 758 | } |
| 759 | } |
| 760 | return 0; |
| 761 | } |
| 762 | |
| 763 | static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den) |
| 764 | { |
| 765 | int offset = tag == TIFF_YRES ? 2 : 0; |
| 766 | s->res[offset++] = num; |
| 767 | s->res[offset] = den; |
| 768 | if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) |
| 769 | av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den, |
| 770 | s->res[2] * (uint64_t)s->res[1], s->res[0] * (uint64_t)s->res[3], INT32_MAX); |
| 771 | } |
| 772 | |
| 773 | static int tiff_decode_tag(TiffContext *s, AVFrame *frame) |
| 774 | { |
| 775 | unsigned tag, type, count, off, value = 0, value2 = 0; |
| 776 | int i, start; |
| 777 | int pos; |
| 778 | int ret; |
| 779 | double *dp; |
| 780 | |
| 781 | ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start); |
| 782 | if (ret < 0) { |
| 783 | goto end; |
| 784 | } |
| 785 | |
| 786 | off = bytestream2_tell(&s->gb); |
| 787 | if (count == 1) { |
| 788 | switch (type) { |
| 789 | case TIFF_BYTE: |
| 790 | case TIFF_SHORT: |
| 791 | case TIFF_LONG: |
| 792 | value = ff_tget(&s->gb, type, s->le); |
| 793 | break; |
| 794 | case TIFF_RATIONAL: |
| 795 | value = ff_tget(&s->gb, TIFF_LONG, s->le); |
| 796 | value2 = ff_tget(&s->gb, TIFF_LONG, s->le); |
| 797 | break; |
| 798 | case TIFF_STRING: |
| 799 | if (count <= 4) { |
| 800 | break; |
| 801 | } |
| 802 | default: |
| 803 | value = UINT_MAX; |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | switch (tag) { |
| 808 | case TIFF_WIDTH: |
| 809 | s->width = value; |
| 810 | break; |
| 811 | case TIFF_HEIGHT: |
| 812 | s->height = value; |
| 813 | break; |
| 814 | case TIFF_BPP: |
| 815 | if (count > 4U) { |
| 816 | av_log(s->avctx, AV_LOG_ERROR, |
| 817 | "This format is not supported (bpp=%d, %d components)\n", |
| 818 | value, count); |
| 819 | return AVERROR_INVALIDDATA; |
| 820 | } |
| 821 | s->bppcount = count; |
| 822 | if (count == 1) |
| 823 | s->bpp = value; |
| 824 | else { |
| 825 | switch (type) { |
| 826 | case TIFF_BYTE: |
| 827 | case TIFF_SHORT: |
| 828 | case TIFF_LONG: |
| 829 | s->bpp = 0; |
| 830 | if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count) |
| 831 | return AVERROR_INVALIDDATA; |
| 832 | for (i = 0; i < count; i++) |
| 833 | s->bpp += ff_tget(&s->gb, type, s->le); |
| 834 | break; |
| 835 | default: |
| 836 | s->bpp = -1; |
| 837 | } |
| 838 | } |
| 839 | if (s->bpp > 64U) { |
| 840 | av_log(s->avctx, AV_LOG_ERROR, |
| 841 | "This format is not supported (bpp=%d, %d components)\n", |
| 842 | s->bpp, count); |
| 843 | s->bpp = 0; |
| 844 | return AVERROR_INVALIDDATA; |
| 845 | } |
| 846 | break; |
| 847 | case TIFF_SAMPLES_PER_PIXEL: |
| 848 | if (count != 1) { |
| 849 | av_log(s->avctx, AV_LOG_ERROR, |
| 850 | "Samples per pixel requires a single value, many provided\n"); |
| 851 | return AVERROR_INVALIDDATA; |
| 852 | } |
| 853 | if (value > 4U) { |
| 854 | av_log(s->avctx, AV_LOG_ERROR, |
| 855 | "Samples per pixel %d is too large\n", value); |
| 856 | return AVERROR_INVALIDDATA; |
| 857 | } |
| 858 | if (s->bppcount == 1) |
| 859 | s->bpp *= value; |
| 860 | s->bppcount = value; |
| 861 | break; |
| 862 | case TIFF_COMPR: |
| 863 | s->compr = value; |
| 864 | s->predictor = 0; |
| 865 | switch (s->compr) { |
| 866 | case TIFF_RAW: |
| 867 | case TIFF_PACKBITS: |
| 868 | case TIFF_LZW: |
| 869 | case TIFF_CCITT_RLE: |
| 870 | break; |
| 871 | case TIFF_G3: |
| 872 | case TIFF_G4: |
| 873 | s->fax_opts = 0; |
| 874 | break; |
| 875 | case TIFF_DEFLATE: |
| 876 | case TIFF_ADOBE_DEFLATE: |
| 877 | #if CONFIG_ZLIB |
| 878 | break; |
| 879 | #else |
| 880 | av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n"); |
| 881 | return AVERROR(ENOSYS); |
| 882 | #endif |
| 883 | case TIFF_JPEG: |
| 884 | case TIFF_NEWJPEG: |
| 885 | avpriv_report_missing_feature(s->avctx, "JPEG compression"); |
| 886 | return AVERROR_PATCHWELCOME; |
| 887 | case TIFF_LZMA: |
| 888 | #if CONFIG_LZMA |
| 889 | break; |
| 890 | #else |
| 891 | av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n"); |
| 892 | return AVERROR(ENOSYS); |
| 893 | #endif |
| 894 | default: |
| 895 | av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n", |
| 896 | s->compr); |
| 897 | return AVERROR_INVALIDDATA; |
| 898 | } |
| 899 | break; |
| 900 | case TIFF_ROWSPERSTRIP: |
| 901 | if (!value || (type == TIFF_LONG && value == UINT_MAX)) |
| 902 | value = s->height; |
| 903 | s->rps = FFMIN(value, s->height); |
| 904 | break; |
| 905 | case TIFF_STRIP_OFFS: |
| 906 | if (count == 1) { |
| 907 | s->strippos = 0; |
| 908 | s->stripoff = value; |
| 909 | } else |
| 910 | s->strippos = off; |
| 911 | s->strips = count; |
| 912 | if (s->strips == 1) |
| 913 | s->rps = s->height; |
| 914 | s->sot = type; |
| 915 | break; |
| 916 | case TIFF_STRIP_SIZE: |
| 917 | if (count == 1) { |
| 918 | s->stripsizesoff = 0; |
| 919 | s->stripsize = value; |
| 920 | s->strips = 1; |
| 921 | } else { |
| 922 | s->stripsizesoff = off; |
| 923 | } |
| 924 | s->strips = count; |
| 925 | s->sstype = type; |
| 926 | break; |
| 927 | case TIFF_XRES: |
| 928 | case TIFF_YRES: |
| 929 | set_sar(s, tag, value, value2); |
| 930 | break; |
| 931 | case TIFF_TILE_BYTE_COUNTS: |
| 932 | case TIFF_TILE_LENGTH: |
| 933 | case TIFF_TILE_OFFSETS: |
| 934 | case TIFF_TILE_WIDTH: |
| 935 | av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n"); |
| 936 | return AVERROR_PATCHWELCOME; |
| 937 | break; |
| 938 | case TIFF_PREDICTOR: |
| 939 | s->predictor = value; |
| 940 | break; |
| 941 | case TIFF_PHOTOMETRIC: |
| 942 | switch (value) { |
| 943 | case TIFF_PHOTOMETRIC_WHITE_IS_ZERO: |
| 944 | case TIFF_PHOTOMETRIC_BLACK_IS_ZERO: |
| 945 | case TIFF_PHOTOMETRIC_RGB: |
| 946 | case TIFF_PHOTOMETRIC_PALETTE: |
| 947 | case TIFF_PHOTOMETRIC_YCBCR: |
| 948 | s->photometric = value; |
| 949 | break; |
| 950 | case TIFF_PHOTOMETRIC_ALPHA_MASK: |
| 951 | case TIFF_PHOTOMETRIC_SEPARATED: |
| 952 | case TIFF_PHOTOMETRIC_CIE_LAB: |
| 953 | case TIFF_PHOTOMETRIC_ICC_LAB: |
| 954 | case TIFF_PHOTOMETRIC_ITU_LAB: |
| 955 | case TIFF_PHOTOMETRIC_CFA: |
| 956 | case TIFF_PHOTOMETRIC_LOG_L: |
| 957 | case TIFF_PHOTOMETRIC_LOG_LUV: |
| 958 | case TIFF_PHOTOMETRIC_LINEAR_RAW: |
| 959 | avpriv_report_missing_feature(s->avctx, |
| 960 | "PhotometricInterpretation 0x%04X", |
| 961 | value); |
| 962 | return AVERROR_PATCHWELCOME; |
| 963 | default: |
| 964 | av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is " |
| 965 | "unknown\n", value); |
| 966 | return AVERROR_INVALIDDATA; |
| 967 | } |
| 968 | break; |
| 969 | case TIFF_FILL_ORDER: |
| 970 | if (value < 1 || value > 2) { |
| 971 | av_log(s->avctx, AV_LOG_ERROR, |
| 972 | "Unknown FillOrder value %d, trying default one\n", value); |
| 973 | value = 1; |
| 974 | } |
| 975 | s->fill_order = value - 1; |
| 976 | break; |
| 977 | case TIFF_PAL: { |
| 978 | GetByteContext pal_gb[3]; |
| 979 | off = type_sizes[type]; |
| 980 | if (count / 3 > 256 || |
| 981 | bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3) |
| 982 | return AVERROR_INVALIDDATA; |
| 983 | |
| 984 | pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb; |
| 985 | bytestream2_skip(&pal_gb[1], count / 3 * off); |
| 986 | bytestream2_skip(&pal_gb[2], count / 3 * off * 2); |
| 987 | |
| 988 | off = (type_sizes[type] - 1) << 3; |
| 989 | for (i = 0; i < count / 3; i++) { |
| 990 | uint32_t p = 0xFF000000; |
| 991 | p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16; |
| 992 | p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8; |
| 993 | p |= ff_tget(&pal_gb[2], type, s->le) >> off; |
| 994 | s->palette[i] = p; |
| 995 | } |
| 996 | s->palette_is_set = 1; |
| 997 | break; |
| 998 | } |
| 999 | case TIFF_PLANAR: |
| 1000 | s->planar = value == 2; |
| 1001 | break; |
| 1002 | case TIFF_YCBCR_SUBSAMPLING: |
| 1003 | if (count != 2) { |
| 1004 | av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n"); |
| 1005 | return AVERROR_INVALIDDATA; |
| 1006 | } |
| 1007 | for (i = 0; i < count; i++) |
| 1008 | s->subsampling[i] = ff_tget(&s->gb, type, s->le); |
| 1009 | break; |
| 1010 | case TIFF_T4OPTIONS: |
| 1011 | if (s->compr == TIFF_G3) |
| 1012 | s->fax_opts = value; |
| 1013 | break; |
| 1014 | case TIFF_T6OPTIONS: |
| 1015 | if (s->compr == TIFF_G4) |
| 1016 | s->fax_opts = value; |
| 1017 | break; |
| 1018 | #define ADD_METADATA(count, name, sep)\ |
| 1019 | if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\ |
| 1020 | av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\ |
| 1021 | goto end;\ |
| 1022 | } |
| 1023 | case TIFF_MODEL_PIXEL_SCALE: |
| 1024 | ADD_METADATA(count, "ModelPixelScaleTag", NULL); |
| 1025 | break; |
| 1026 | case TIFF_MODEL_TRANSFORMATION: |
| 1027 | ADD_METADATA(count, "ModelTransformationTag", NULL); |
| 1028 | break; |
| 1029 | case TIFF_MODEL_TIEPOINT: |
| 1030 | ADD_METADATA(count, "ModelTiepointTag", NULL); |
| 1031 | break; |
| 1032 | case TIFF_GEO_KEY_DIRECTORY: |
| 1033 | ADD_METADATA(1, "GeoTIFF_Version", NULL); |
| 1034 | ADD_METADATA(2, "GeoTIFF_Key_Revision", "."); |
| 1035 | s->geotag_count = ff_tget_short(&s->gb, s->le); |
| 1036 | if (s->geotag_count > count / 4 - 1) { |
| 1037 | s->geotag_count = count / 4 - 1; |
| 1038 | av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n"); |
| 1039 | } |
| 1040 | if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4) { |
| 1041 | s->geotag_count = 0; |
| 1042 | return -1; |
| 1043 | } |
| 1044 | s->geotags = av_mallocz_array(s->geotag_count, sizeof(TiffGeoTag)); |
| 1045 | if (!s->geotags) { |
| 1046 | av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); |
| 1047 | s->geotag_count = 0; |
| 1048 | goto end; |
| 1049 | } |
| 1050 | for (i = 0; i < s->geotag_count; i++) { |
| 1051 | s->geotags[i].key = ff_tget_short(&s->gb, s->le); |
| 1052 | s->geotags[i].type = ff_tget_short(&s->gb, s->le); |
| 1053 | s->geotags[i].count = ff_tget_short(&s->gb, s->le); |
| 1054 | |
| 1055 | if (!s->geotags[i].type) |
| 1056 | s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le)); |
| 1057 | else |
| 1058 | s->geotags[i].offset = ff_tget_short(&s->gb, s->le); |
| 1059 | } |
| 1060 | break; |
| 1061 | case TIFF_GEO_DOUBLE_PARAMS: |
| 1062 | if (count >= INT_MAX / sizeof(int64_t)) |
| 1063 | return AVERROR_INVALIDDATA; |
| 1064 | if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t)) |
| 1065 | return AVERROR_INVALIDDATA; |
| 1066 | dp = av_malloc_array(count, sizeof(double)); |
| 1067 | if (!dp) { |
| 1068 | av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); |
| 1069 | goto end; |
| 1070 | } |
| 1071 | for (i = 0; i < count; i++) |
| 1072 | dp[i] = ff_tget_double(&s->gb, s->le); |
| 1073 | for (i = 0; i < s->geotag_count; i++) { |
| 1074 | if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) { |
| 1075 | if (s->geotags[i].count == 0 |
| 1076 | || s->geotags[i].offset + s->geotags[i].count > count) { |
| 1077 | av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key); |
| 1078 | } else { |
| 1079 | char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", "); |
| 1080 | if (!ap) { |
| 1081 | av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); |
| 1082 | av_freep(&dp); |
| 1083 | return AVERROR(ENOMEM); |
| 1084 | } |
| 1085 | s->geotags[i].val = ap; |
| 1086 | } |
| 1087 | } |
| 1088 | } |
| 1089 | av_freep(&dp); |
| 1090 | break; |
| 1091 | case TIFF_GEO_ASCII_PARAMS: |
| 1092 | pos = bytestream2_tell(&s->gb); |
| 1093 | for (i = 0; i < s->geotag_count; i++) { |
| 1094 | if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) { |
| 1095 | if (s->geotags[i].count == 0 |
| 1096 | || s->geotags[i].offset + s->geotags[i].count > count) { |
| 1097 | av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key); |
| 1098 | } else { |
| 1099 | char *ap; |
| 1100 | |
| 1101 | bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET); |
| 1102 | if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count) |
| 1103 | return AVERROR_INVALIDDATA; |
| 1104 | ap = av_malloc(s->geotags[i].count); |
| 1105 | if (!ap) { |
| 1106 | av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n"); |
| 1107 | return AVERROR(ENOMEM); |
| 1108 | } |
| 1109 | bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count); |
| 1110 | ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte |
| 1111 | s->geotags[i].val = ap; |
| 1112 | } |
| 1113 | } |
| 1114 | } |
| 1115 | break; |
| 1116 | case TIFF_ARTIST: |
| 1117 | ADD_METADATA(count, "artist", NULL); |
| 1118 | break; |
| 1119 | case TIFF_COPYRIGHT: |
| 1120 | ADD_METADATA(count, "copyright", NULL); |
| 1121 | break; |
| 1122 | case TIFF_DATE: |
| 1123 | ADD_METADATA(count, "date", NULL); |
| 1124 | break; |
| 1125 | case TIFF_DOCUMENT_NAME: |
| 1126 | ADD_METADATA(count, "document_name", NULL); |
| 1127 | break; |
| 1128 | case TIFF_HOST_COMPUTER: |
| 1129 | ADD_METADATA(count, "computer", NULL); |
| 1130 | break; |
| 1131 | case TIFF_IMAGE_DESCRIPTION: |
| 1132 | ADD_METADATA(count, "description", NULL); |
| 1133 | break; |
| 1134 | case TIFF_MAKE: |
| 1135 | ADD_METADATA(count, "make", NULL); |
| 1136 | break; |
| 1137 | case TIFF_MODEL: |
| 1138 | ADD_METADATA(count, "model", NULL); |
| 1139 | break; |
| 1140 | case TIFF_PAGE_NAME: |
| 1141 | ADD_METADATA(count, "page_name", NULL); |
| 1142 | break; |
| 1143 | case TIFF_PAGE_NUMBER: |
| 1144 | ADD_METADATA(count, "page_number", " / "); |
| 1145 | break; |
| 1146 | case TIFF_SOFTWARE_NAME: |
| 1147 | ADD_METADATA(count, "software", NULL); |
| 1148 | break; |
| 1149 | default: |
| 1150 | if (s->avctx->err_recognition & AV_EF_EXPLODE) { |
| 1151 | av_log(s->avctx, AV_LOG_ERROR, |
| 1152 | "Unknown or unsupported tag %d/0X%0X\n", |
| 1153 | tag, tag); |
| 1154 | return AVERROR_INVALIDDATA; |
| 1155 | } |
| 1156 | } |
| 1157 | end: |
| 1158 | bytestream2_seek(&s->gb, start, SEEK_SET); |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
| 1162 | static int decode_frame(AVCodecContext *avctx, |
| 1163 | void *data, int *got_frame, AVPacket *avpkt) |
| 1164 | { |
| 1165 | TiffContext *const s = avctx->priv_data; |
| 1166 | AVFrame *const p = data; |
| 1167 | ThreadFrame frame = { .f = data }; |
| 1168 | unsigned off; |
| 1169 | int le, ret, plane, planes; |
| 1170 | int i, j, entries, stride; |
| 1171 | unsigned soff, ssize; |
| 1172 | uint8_t *dst; |
| 1173 | GetByteContext stripsizes; |
| 1174 | GetByteContext stripdata; |
| 1175 | |
| 1176 | bytestream2_init(&s->gb, avpkt->data, avpkt->size); |
| 1177 | |
| 1178 | // parse image header |
| 1179 | if ((ret = ff_tdecode_header(&s->gb, &le, &off))) { |
| 1180 | av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n"); |
| 1181 | return ret; |
| 1182 | } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) { |
| 1183 | av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n"); |
| 1184 | return AVERROR_INVALIDDATA; |
| 1185 | } |
| 1186 | s->le = le; |
| 1187 | // TIFF_BPP is not a required tag and defaults to 1 |
| 1188 | s->bppcount = s->bpp = 1; |
| 1189 | s->photometric = TIFF_PHOTOMETRIC_NONE; |
| 1190 | s->compr = TIFF_RAW; |
| 1191 | s->fill_order = 0; |
| 1192 | free_geotags(s); |
| 1193 | |
| 1194 | // Reset these offsets so we can tell if they were set this frame |
| 1195 | s->stripsizesoff = s->strippos = 0; |
| 1196 | /* parse image file directory */ |
| 1197 | bytestream2_seek(&s->gb, off, SEEK_SET); |
| 1198 | entries = ff_tget_short(&s->gb, le); |
| 1199 | if (bytestream2_get_bytes_left(&s->gb) < entries * 12) |
| 1200 | return AVERROR_INVALIDDATA; |
| 1201 | for (i = 0; i < entries; i++) { |
| 1202 | if ((ret = tiff_decode_tag(s, p)) < 0) |
| 1203 | return ret; |
| 1204 | } |
| 1205 | |
| 1206 | for (i = 0; i<s->geotag_count; i++) { |
| 1207 | const char *keyname = get_geokey_name(s->geotags[i].key); |
| 1208 | if (!keyname) { |
| 1209 | av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key); |
| 1210 | continue; |
| 1211 | } |
| 1212 | if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) { |
| 1213 | av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key); |
| 1214 | continue; |
| 1215 | } |
| 1216 | ret = av_dict_set(avpriv_frame_get_metadatap(p), keyname, s->geotags[i].val, 0); |
| 1217 | if (ret<0) { |
| 1218 | av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname); |
| 1219 | return ret; |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | if (!s->strippos && !s->stripoff) { |
| 1224 | av_log(avctx, AV_LOG_ERROR, "Image data is missing\n"); |
| 1225 | return AVERROR_INVALIDDATA; |
| 1226 | } |
| 1227 | /* now we have the data and may start decoding */ |
| 1228 | if ((ret = init_image(s, &frame)) < 0) |
| 1229 | return ret; |
| 1230 | |
| 1231 | if (s->strips == 1 && !s->stripsize) { |
| 1232 | av_log(avctx, AV_LOG_WARNING, "Image data size missing\n"); |
| 1233 | s->stripsize = avpkt->size - s->stripoff; |
| 1234 | } |
| 1235 | |
| 1236 | if (s->stripsizesoff) { |
| 1237 | if (s->stripsizesoff >= (unsigned)avpkt->size) |
| 1238 | return AVERROR_INVALIDDATA; |
| 1239 | bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, |
| 1240 | avpkt->size - s->stripsizesoff); |
| 1241 | } |
| 1242 | if (s->strippos) { |
| 1243 | if (s->strippos >= (unsigned)avpkt->size) |
| 1244 | return AVERROR_INVALIDDATA; |
| 1245 | bytestream2_init(&stripdata, avpkt->data + s->strippos, |
| 1246 | avpkt->size - s->strippos); |
| 1247 | } |
| 1248 | |
| 1249 | if (s->rps <= 0) { |
| 1250 | av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps); |
| 1251 | return AVERROR_INVALIDDATA; |
| 1252 | } |
| 1253 | |
| 1254 | planes = s->planar ? s->bppcount : 1; |
| 1255 | for (plane = 0; plane < planes; plane++) { |
| 1256 | stride = p->linesize[plane]; |
| 1257 | dst = p->data[plane]; |
| 1258 | for (i = 0; i < s->height; i += s->rps) { |
| 1259 | if (s->stripsizesoff) |
| 1260 | ssize = ff_tget(&stripsizes, s->sstype, le); |
| 1261 | else |
| 1262 | ssize = s->stripsize; |
| 1263 | |
| 1264 | if (s->strippos) |
| 1265 | soff = ff_tget(&stripdata, s->sot, le); |
| 1266 | else |
| 1267 | soff = s->stripoff; |
| 1268 | |
| 1269 | if (soff > avpkt->size || ssize > avpkt->size - soff) { |
| 1270 | av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n"); |
| 1271 | return AVERROR_INVALIDDATA; |
| 1272 | } |
| 1273 | if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i, |
| 1274 | FFMIN(s->rps, s->height - i))) < 0) { |
| 1275 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 1276 | return ret; |
| 1277 | break; |
| 1278 | } |
| 1279 | dst += s->rps * stride; |
| 1280 | } |
| 1281 | if (s->predictor == 2) { |
| 1282 | if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) { |
| 1283 | av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported"); |
| 1284 | return AVERROR_PATCHWELCOME; |
| 1285 | } |
| 1286 | dst = p->data[plane]; |
| 1287 | soff = s->bpp >> 3; |
| 1288 | if (s->planar) |
| 1289 | soff = FFMAX(soff / s->bppcount, 1); |
| 1290 | ssize = s->width * soff; |
| 1291 | if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE || |
| 1292 | s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE || |
| 1293 | s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE || |
| 1294 | s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) { |
| 1295 | for (i = 0; i < s->height; i++) { |
| 1296 | for (j = soff; j < ssize; j += 2) |
| 1297 | AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff)); |
| 1298 | dst += stride; |
| 1299 | } |
| 1300 | } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE || |
| 1301 | s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE || |
| 1302 | s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE || |
| 1303 | s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) { |
| 1304 | for (i = 0; i < s->height; i++) { |
| 1305 | for (j = soff; j < ssize; j += 2) |
| 1306 | AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff)); |
| 1307 | dst += stride; |
| 1308 | } |
| 1309 | } else { |
| 1310 | for (i = 0; i < s->height; i++) { |
| 1311 | for (j = soff; j < ssize; j++) |
| 1312 | dst[j] += dst[j - soff]; |
| 1313 | dst += stride; |
| 1314 | } |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) { |
| 1319 | dst = p->data[plane]; |
| 1320 | for (i = 0; i < s->height; i++) { |
| 1321 | for (j = 0; j < p->linesize[plane]; j++) |
| 1322 | dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j]; |
| 1323 | dst += stride; |
| 1324 | } |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | if (s->planar && s->bppcount > 2) { |
| 1329 | FFSWAP(uint8_t*, p->data[0], p->data[2]); |
| 1330 | FFSWAP(int, p->linesize[0], p->linesize[2]); |
| 1331 | FFSWAP(uint8_t*, p->data[0], p->data[1]); |
| 1332 | FFSWAP(int, p->linesize[0], p->linesize[1]); |
| 1333 | } |
| 1334 | |
| 1335 | *got_frame = 1; |
| 1336 | |
| 1337 | return avpkt->size; |
| 1338 | } |
| 1339 | |
| 1340 | static av_cold int tiff_init(AVCodecContext *avctx) |
| 1341 | { |
| 1342 | TiffContext *s = avctx->priv_data; |
| 1343 | |
| 1344 | s->width = 0; |
| 1345 | s->height = 0; |
| 1346 | s->subsampling[0] = |
| 1347 | s->subsampling[1] = 1; |
| 1348 | s->avctx = avctx; |
| 1349 | ff_lzw_decode_open(&s->lzw); |
| 1350 | ff_ccitt_unpack_init(); |
| 1351 | |
| 1352 | return 0; |
| 1353 | } |
| 1354 | |
| 1355 | static av_cold int tiff_end(AVCodecContext *avctx) |
| 1356 | { |
| 1357 | TiffContext *const s = avctx->priv_data; |
| 1358 | |
| 1359 | free_geotags(s); |
| 1360 | |
| 1361 | ff_lzw_decode_close(&s->lzw); |
| 1362 | av_freep(&s->deinvert_buf); |
| 1363 | return 0; |
| 1364 | } |
| 1365 | |
| 1366 | AVCodec ff_tiff_decoder = { |
| 1367 | .name = "tiff", |
| 1368 | .long_name = NULL_IF_CONFIG_SMALL("TIFF image"), |
| 1369 | .type = AVMEDIA_TYPE_VIDEO, |
| 1370 | .id = AV_CODEC_ID_TIFF, |
| 1371 | .priv_data_size = sizeof(TiffContext), |
| 1372 | .init = tiff_init, |
| 1373 | .close = tiff_end, |
| 1374 | .decode = decode_frame, |
| 1375 | .init_thread_copy = ONLY_IF_THREADS_ENABLED(tiff_init), |
| 1376 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, |
| 1377 | }; |