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 #define LZMA_API_STATIC
33 #include <lzma.h>
34 #endif
35
36 #include "libavutil/attributes.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/error.h"
39 #include "libavutil/intreadwrite.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/opt.h"
42 #include "avcodec.h"
43 #include "bytestream.h"
44 #include "faxcompr.h"
45 #include "internal.h"
46 #include "lzw.h"
47 #include "mathops.h"
48 #include "tiff.h"
49 #include "tiff_data.h"
50 #include "mjpegdec.h"
51 #include "thread.h"
52 #include "get_bits.h"
53
54 typedef struct TiffContext {
55 AVClass *class;
56 AVCodecContext *avctx;
57 GetByteContext gb;
58
59 /* JPEG decoding for DNG */
60 AVCodecContext *avctx_mjpeg; // wrapper context for MJPEG
61 AVFrame *jpgframe; // decoded JPEG tile
62
63 int get_subimage;
64 uint16_t get_page;
65 int get_thumbnail;
66
67 enum TiffType tiff_type;
68 int width, height;
69 unsigned int bpp, bppcount;
70 uint32_t palette[256];
71 int palette_is_set;
72 int le;
73 enum TiffCompr compr;
74 enum TiffPhotometric photometric;
75 int planar;
76 int subsampling[2];
77 int fax_opts;
78 int predictor;
79 int fill_order;
80 uint32_t res[4];
81 int is_thumbnail;
82 unsigned last_tag;
83
84 int is_bayer;
85 uint8_t pattern[4];
86 unsigned black_level;
87 unsigned white_level;
88 uint16_t dng_lut[65536];
89
90 uint32_t sub_ifd;
91 uint16_t cur_page;
92
93 int strips, rps, sstype;
94 int sot;
95 int stripsizesoff, stripsize, stripoff, strippos;
96 LZWState *lzw;
97
98 /* Tile support */
99 int is_tiled;
100 int tile_byte_counts_offset, tile_offsets_offset;
101 int tile_width, tile_length;
102 int tile_count;
103
104 int is_jpeg;
105
106 uint8_t *deinvert_buf;
107 int deinvert_buf_size;
108 uint8_t *yuv_line;
109 unsigned int yuv_line_size;
110 uint8_t *fax_buffer;
111 unsigned int fax_buffer_size;
112
113 int geotag_count;
114 TiffGeoTag *geotags;
115 } TiffContext;
116
tiff_set_type(TiffContext * s,enum TiffType tiff_type)117 static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
118 if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
119 s->tiff_type = tiff_type;
120 }
121
free_geotags(TiffContext * const s)122 static void free_geotags(TiffContext *const s)
123 {
124 int i;
125 for (i = 0; i < s->geotag_count; i++) {
126 if (s->geotags[i].val)
127 av_freep(&s->geotags[i].val);
128 }
129 av_freep(&s->geotags);
130 s->geotag_count = 0;
131 }
132
133 #define RET_GEOKEY(TYPE, array, element)\
134 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
135 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
136 return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
137
get_geokey_name(int key)138 static const char *get_geokey_name(int key)
139 {
140 RET_GEOKEY(VERT, vert, name);
141 RET_GEOKEY(PROJ, proj, name);
142 RET_GEOKEY(GEOG, geog, name);
143 RET_GEOKEY(CONF, conf, name);
144
145 return NULL;
146 }
147
get_geokey_type(int key)148 static int get_geokey_type(int key)
149 {
150 RET_GEOKEY(VERT, vert, type);
151 RET_GEOKEY(PROJ, proj, type);
152 RET_GEOKEY(GEOG, geog, type);
153 RET_GEOKEY(CONF, conf, type);
154
155 return AVERROR_INVALIDDATA;
156 }
157
cmp_id_key(const void * id,const void * k)158 static int cmp_id_key(const void *id, const void *k)
159 {
160 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
161 }
162
search_keyval(const TiffGeoTagKeyName * keys,int n,int id)163 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
164 {
165 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
166 if(r)
167 return r->name;
168
169 return NULL;
170 }
171
get_geokey_val(int key,int val)172 static char *get_geokey_val(int key, int val)
173 {
174 char *ap;
175
176 if (val == TIFF_GEO_KEY_UNDEFINED)
177 return av_strdup("undefined");
178 if (val == TIFF_GEO_KEY_USER_DEFINED)
179 return av_strdup("User-Defined");
180
181 #define RET_GEOKEY_VAL(TYPE, array)\
182 if (val >= TIFF_##TYPE##_OFFSET &&\
183 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
184 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
185
186 switch (key) {
187 case TIFF_GT_MODEL_TYPE_GEOKEY:
188 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
189 break;
190 case TIFF_GT_RASTER_TYPE_GEOKEY:
191 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
192 break;
193 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
194 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
195 case TIFF_VERTICAL_UNITS_GEOKEY:
196 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
197 break;
198 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
199 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
200 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
201 break;
202 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
203 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
204 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
205 break;
206 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
207 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
208 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
209 break;
210 case TIFF_GEOG_ELLIPSOID_GEOKEY:
211 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
212 break;
213 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
214 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
215 break;
216 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
217 ap = av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
218 if(ap) return ap;
219 break;
220 case TIFF_PROJECTION_GEOKEY:
221 ap = av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
222 if(ap) return ap;
223 break;
224 case TIFF_PROJ_COORD_TRANS_GEOKEY:
225 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
226 break;
227 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
228 RET_GEOKEY_VAL(VERT_CS, vert_cs);
229 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
230 break;
231
232 }
233
234 ap = av_malloc(14);
235 if (ap)
236 snprintf(ap, 14, "Unknown-%d", val);
237 return ap;
238 }
239
doubles2str(double * dp,int count,const char * sep)240 static char *doubles2str(double *dp, int count, const char *sep)
241 {
242 int i;
243 char *ap, *ap0;
244 uint64_t component_len;
245 if (!sep) sep = ", ";
246 component_len = 24LL + strlen(sep);
247 if (count >= (INT_MAX - 1)/component_len)
248 return NULL;
249 ap = av_malloc(component_len * count + 1);
250 if (!ap)
251 return NULL;
252 ap0 = ap;
253 ap[0] = '\0';
254 for (i = 0; i < count; i++) {
255 unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep);
256 if(l >= component_len) {
257 av_free(ap0);
258 return NULL;
259 }
260 ap += l;
261 }
262 ap0[strlen(ap0) - strlen(sep)] = '\0';
263 return ap0;
264 }
265
add_metadata(int count,int type,const char * name,const char * sep,TiffContext * s,AVFrame * frame)266 static int add_metadata(int count, int type,
267 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
268 {
269 switch(type) {
270 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, &frame->metadata);
271 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata);
272 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata);
273 default : return AVERROR_INVALIDDATA;
274 };
275 }
276
277 static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
278 const uint8_t *src, int src_stride, int width, int height,
279 int is_single_comp, int is_u16);
280
horizontal_fill(TiffContext * s,unsigned int bpp,uint8_t * dst,int usePtr,const uint8_t * src,uint8_t c,int width,int offset)281 static void av_always_inline horizontal_fill(TiffContext *s,
282 unsigned int bpp, uint8_t* dst,
283 int usePtr, const uint8_t *src,
284 uint8_t c, int width, int offset)
285 {
286 switch (bpp) {
287 case 1:
288 while (--width >= 0) {
289 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
290 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
291 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
292 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
293 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
294 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
295 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
296 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
297 }
298 break;
299 case 2:
300 while (--width >= 0) {
301 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
302 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
303 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
304 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
305 }
306 break;
307 case 4:
308 while (--width >= 0) {
309 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
310 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
311 }
312 break;
313 case 10:
314 case 12:
315 case 14: {
316 uint16_t *dst16 = (uint16_t *)dst;
317 int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
318 uint8_t shift = is_dng ? 0 : 16 - bpp;
319 GetBitContext gb;
320
321 init_get_bits8(&gb, src, width);
322 for (int i = 0; i < s->width; i++) {
323 dst16[i] = get_bits(&gb, bpp) << shift;
324 }
325 }
326 break;
327 default:
328 if (usePtr) {
329 memcpy(dst + offset, src, width);
330 } else {
331 memset(dst + offset, c, width);
332 }
333 }
334 }
335
deinvert_buffer(TiffContext * s,const uint8_t * src,int size)336 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
337 {
338 int i;
339
340 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
341 if (!s->deinvert_buf)
342 return AVERROR(ENOMEM);
343 for (i = 0; i < size; i++)
344 s->deinvert_buf[i] = ff_reverse[src[i]];
345
346 return 0;
347 }
348
unpack_gray(TiffContext * s,AVFrame * p,const uint8_t * src,int lnum,int width,int bpp)349 static void unpack_gray(TiffContext *s, AVFrame *p,
350 const uint8_t *src, int lnum, int width, int bpp)
351 {
352 GetBitContext gb;
353 uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]);
354
355 init_get_bits8(&gb, src, width);
356
357 for (int i = 0; i < s->width; i++) {
358 dst[i] = get_bits(&gb, bpp);
359 }
360 }
361
unpack_yuv(TiffContext * s,AVFrame * p,const uint8_t * src,int lnum)362 static void unpack_yuv(TiffContext *s, AVFrame *p,
363 const uint8_t *src, int lnum)
364 {
365 int i, j, k;
366 int w = (s->width - 1) / s->subsampling[0] + 1;
367 uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
368 uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
369 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
370 for (i = 0; i < w; i++) {
371 for (j = 0; j < s->subsampling[1]; j++)
372 for (k = 0; k < s->subsampling[0]; k++)
373 p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
374 FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++;
375 *pu++ = *src++;
376 *pv++ = *src++;
377 }
378 }else{
379 for (i = 0; i < w; i++) {
380 for (j = 0; j < s->subsampling[1]; j++)
381 for (k = 0; k < s->subsampling[0]; k++)
382 p->data[0][(lnum + j) * p->linesize[0] +
383 i * s->subsampling[0] + k] = *src++;
384 *pu++ = *src++;
385 *pv++ = *src++;
386 }
387 }
388 }
389
390 #if CONFIG_ZLIB
tiff_uncompress(uint8_t * dst,unsigned long * len,const uint8_t * src,int size)391 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
392 int size)
393 {
394 z_stream zstream = { 0 };
395 int zret;
396
397 zstream.next_in = src;
398 zstream.avail_in = size;
399 zstream.next_out = dst;
400 zstream.avail_out = *len;
401 zret = inflateInit(&zstream);
402 if (zret != Z_OK) {
403 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
404 return zret;
405 }
406 zret = inflate(&zstream, Z_SYNC_FLUSH);
407 inflateEnd(&zstream);
408 *len = zstream.total_out;
409 return zret == Z_STREAM_END ? Z_OK : zret;
410 }
411
tiff_unpack_zlib(TiffContext * s,AVFrame * p,uint8_t * dst,int stride,const uint8_t * src,int size,int width,int lines,int strip_start,int is_yuv)412 static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
413 const uint8_t *src, int size, int width, int lines,
414 int strip_start, int is_yuv)
415 {
416 uint8_t *zbuf;
417 unsigned long outlen;
418 int ret, line;
419 outlen = width * lines;
420 zbuf = av_malloc(outlen);
421 if (!zbuf)
422 return AVERROR(ENOMEM);
423 if (s->fill_order) {
424 if ((ret = deinvert_buffer(s, src, size)) < 0) {
425 av_free(zbuf);
426 return ret;
427 }
428 src = s->deinvert_buf;
429 }
430 ret = tiff_uncompress(zbuf, &outlen, src, size);
431 if (ret != Z_OK) {
432 av_log(s->avctx, AV_LOG_ERROR,
433 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
434 (unsigned long)width * lines, ret);
435 av_free(zbuf);
436 return AVERROR_UNKNOWN;
437 }
438 src = zbuf;
439 for (line = 0; line < lines; line++) {
440 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
441 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
442 } else {
443 memcpy(dst, src, width);
444 }
445 if (is_yuv) {
446 unpack_yuv(s, p, dst, strip_start + line);
447 line += s->subsampling[1] - 1;
448 }
449 dst += stride;
450 src += width;
451 }
452 av_free(zbuf);
453 return 0;
454 }
455 #endif
456
457 #if CONFIG_LZMA
tiff_uncompress_lzma(uint8_t * dst,uint64_t * len,const uint8_t * src,int size)458 static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src,
459 int size)
460 {
461 lzma_stream stream = LZMA_STREAM_INIT;
462 lzma_ret ret;
463
464 stream.next_in = (uint8_t *)src;
465 stream.avail_in = size;
466 stream.next_out = dst;
467 stream.avail_out = *len;
468 ret = lzma_stream_decoder(&stream, UINT64_MAX, 0);
469 if (ret != LZMA_OK) {
470 av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret);
471 return ret;
472 }
473 ret = lzma_code(&stream, LZMA_RUN);
474 lzma_end(&stream);
475 *len = stream.total_out;
476 return ret == LZMA_STREAM_END ? LZMA_OK : ret;
477 }
478
tiff_unpack_lzma(TiffContext * s,AVFrame * p,uint8_t * dst,int stride,const uint8_t * src,int size,int width,int lines,int strip_start,int is_yuv)479 static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
480 const uint8_t *src, int size, int width, int lines,
481 int strip_start, int is_yuv)
482 {
483 uint64_t outlen = width * (uint64_t)lines;
484 int ret, line;
485 uint8_t *buf = av_malloc(outlen);
486 if (!buf)
487 return AVERROR(ENOMEM);
488 if (s->fill_order) {
489 if ((ret = deinvert_buffer(s, src, size)) < 0) {
490 av_free(buf);
491 return ret;
492 }
493 src = s->deinvert_buf;
494 }
495 ret = tiff_uncompress_lzma(buf, &outlen, src, size);
496 if (ret != LZMA_OK) {
497 av_log(s->avctx, AV_LOG_ERROR,
498 "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen,
499 (uint64_t)width * lines, ret);
500 av_free(buf);
501 return AVERROR_UNKNOWN;
502 }
503 src = buf;
504 for (line = 0; line < lines; line++) {
505 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
506 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
507 } else {
508 memcpy(dst, src, width);
509 }
510 if (is_yuv) {
511 unpack_yuv(s, p, dst, strip_start + line);
512 line += s->subsampling[1] - 1;
513 }
514 dst += stride;
515 src += width;
516 }
517 av_free(buf);
518 return 0;
519 }
520 #endif
521
tiff_unpack_fax(TiffContext * s,uint8_t * dst,int stride,const uint8_t * src,int size,int width,int lines)522 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
523 const uint8_t *src, int size, int width, int lines)
524 {
525 int i, ret = 0;
526 int line;
527 uint8_t *src2;
528
529 av_fast_padded_malloc(&s->fax_buffer, &s->fax_buffer_size, size);
530 src2 = s->fax_buffer;
531
532 if (!src2) {
533 av_log(s->avctx, AV_LOG_ERROR,
534 "Error allocating temporary buffer\n");
535 return AVERROR(ENOMEM);
536 }
537
538 if (!s->fill_order) {
539 memcpy(src2, src, size);
540 } else {
541 for (i = 0; i < size; i++)
542 src2[i] = ff_reverse[src[i]];
543 }
544 memset(src2 + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
545 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
546 s->compr, s->fax_opts);
547 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
548 for (line = 0; line < lines; line++) {
549 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
550 dst += stride;
551 }
552 return ret;
553 }
554
555 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame);
556
tiff_unpack_strip(TiffContext * s,AVFrame * p,uint8_t * dst,int stride,const uint8_t * src,int size,int strip_start,int lines)557 static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
558 const uint8_t *src, int size, int strip_start, int lines)
559 {
560 PutByteContext pb;
561 int c, line, pixels, code, ret;
562 const uint8_t *ssrc = src;
563 int width = ((s->width * s->bpp) + 7) >> 3;
564 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
565 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
566 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
567 desc->nb_components >= 3;
568 int is_dng;
569
570 if (s->planar)
571 width /= s->bppcount;
572
573 if (size <= 0)
574 return AVERROR_INVALIDDATA;
575
576 if (is_yuv) {
577 int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
578 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
579 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
580 if (s->yuv_line == NULL) {
581 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
582 return AVERROR(ENOMEM);
583 }
584 dst = s->yuv_line;
585 stride = 0;
586
587 width = (s->width - 1) / s->subsampling[0] + 1;
588 width = width * s->subsampling[0] * s->subsampling[1] + 2*width;
589 av_assert0(width <= bytes_per_row);
590 av_assert0(s->bpp == 24);
591 }
592 if (s->is_bayer) {
593 av_assert0(width == (s->bpp * s->width + 7) >> 3);
594 }
595 if (p->format == AV_PIX_FMT_GRAY12) {
596 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width);
597 if (s->yuv_line == NULL) {
598 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
599 return AVERROR(ENOMEM);
600 }
601 dst = s->yuv_line;
602 stride = 0;
603 }
604
605 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
606 #if CONFIG_ZLIB
607 return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines,
608 strip_start, is_yuv);
609 #else
610 av_log(s->avctx, AV_LOG_ERROR,
611 "zlib support not enabled, "
612 "deflate compression not supported\n");
613 return AVERROR(ENOSYS);
614 #endif
615 }
616 if (s->compr == TIFF_LZMA) {
617 #if CONFIG_LZMA
618 return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines,
619 strip_start, is_yuv);
620 #else
621 av_log(s->avctx, AV_LOG_ERROR,
622 "LZMA support not enabled\n");
623 return AVERROR(ENOSYS);
624 #endif
625 }
626 if (s->compr == TIFF_LZW) {
627 if (s->fill_order) {
628 if ((ret = deinvert_buffer(s, src, size)) < 0)
629 return ret;
630 ssrc = src = s->deinvert_buf;
631 }
632 if (size > 1 && !src[0] && (src[1]&1)) {
633 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
634 }
635 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
636 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
637 return ret;
638 }
639 for (line = 0; line < lines; line++) {
640 pixels = ff_lzw_decode(s->lzw, dst, width);
641 if (pixels < width) {
642 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
643 pixels, width);
644 return AVERROR_INVALIDDATA;
645 }
646 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
647 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
648 if (is_yuv) {
649 unpack_yuv(s, p, dst, strip_start + line);
650 line += s->subsampling[1] - 1;
651 } else if (p->format == AV_PIX_FMT_GRAY12) {
652 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
653 }
654 dst += stride;
655 }
656 return 0;
657 }
658 if (s->compr == TIFF_CCITT_RLE ||
659 s->compr == TIFF_G3 ||
660 s->compr == TIFF_G4) {
661 if (is_yuv || p->format == AV_PIX_FMT_GRAY12)
662 return AVERROR_INVALIDDATA;
663
664 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
665 }
666
667 bytestream2_init(&s->gb, src, size);
668 bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines));
669
670 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
671
672 /* Decode JPEG-encoded DNGs with strips */
673 if (s->compr == TIFF_NEWJPEG && is_dng) {
674 if (s->strips > 1) {
675 av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n");
676 return AVERROR_PATCHWELCOME;
677 }
678 if ((ret = dng_decode_strip(s->avctx, p)) < 0)
679 return ret;
680 return 0;
681 }
682
683 if (is_dng && stride == 0)
684 return AVERROR_INVALIDDATA;
685
686 for (line = 0; line < lines; line++) {
687 if (src - ssrc > size) {
688 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
689 return AVERROR_INVALIDDATA;
690 }
691
692 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
693 break;
694 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
695 switch (s->compr) {
696 case TIFF_RAW:
697 if (ssrc + size - src < width)
698 return AVERROR_INVALIDDATA;
699
700 if (!s->fill_order) {
701 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
702 dst, 1, src, 0, width, 0);
703 } else {
704 int i;
705 for (i = 0; i < width; i++)
706 dst[i] = ff_reverse[src[i]];
707 }
708
709 /* Color processing for DNG images with uncompressed strips (non-tiled) */
710 if (is_dng) {
711 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
712
713 is_u16 = (s->bpp / s->bppcount > 8);
714 pixel_size_bits = (is_u16 ? 16 : 8);
715 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
716
717 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
718 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
719 dng_blit(s,
720 dst,
721 0, // no stride, only 1 line
722 dst,
723 0, // no stride, only 1 line
724 elements,
725 1,
726 0, // single-component variation is only preset in JPEG-encoded DNGs
727 is_u16);
728 }
729
730 src += width;
731 break;
732 case TIFF_PACKBITS:
733 for (pixels = 0; pixels < width;) {
734 if (ssrc + size - src < 2) {
735 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
736 return AVERROR_INVALIDDATA;
737 }
738 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
739 if (code >= 0) {
740 code++;
741 if (pixels + code > width ||
742 ssrc + size - src < code) {
743 av_log(s->avctx, AV_LOG_ERROR,
744 "Copy went out of bounds\n");
745 return AVERROR_INVALIDDATA;
746 }
747 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
748 dst, 1, src, 0, code, pixels);
749 src += code;
750 pixels += code;
751 } else if (code != -128) { // -127..-1
752 code = (-code) + 1;
753 if (pixels + code > width) {
754 av_log(s->avctx, AV_LOG_ERROR,
755 "Run went out of bounds\n");
756 return AVERROR_INVALIDDATA;
757 }
758 c = *src++;
759 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
760 dst, 0, NULL, c, code, pixels);
761 pixels += code;
762 }
763 }
764 if (s->fill_order) {
765 int i;
766 for (i = 0; i < width; i++)
767 dst[i] = ff_reverse[dst[i]];
768 }
769 break;
770 }
771 if (is_yuv) {
772 unpack_yuv(s, p, dst, strip_start + line);
773 line += s->subsampling[1] - 1;
774 } else if (p->format == AV_PIX_FMT_GRAY12) {
775 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
776 }
777 dst += stride;
778 }
779 return 0;
780 }
781
782 /**
783 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
784 */
dng_process_color16(uint16_t value,const uint16_t * lut,uint16_t black_level,float scale_factor)785 static uint16_t av_always_inline dng_process_color16(uint16_t value,
786 const uint16_t *lut,
787 uint16_t black_level,
788 float scale_factor) {
789 float value_norm;
790
791 // Lookup table lookup
792 if (lut)
793 value = lut[value];
794
795 // Black level subtraction
796 value = av_clip_uint16_c((unsigned)value - black_level);
797
798 // Color scaling
799 value_norm = (float)value * scale_factor;
800
801 value = av_clip_uint16_c(value_norm * 65535);
802
803 return value;
804 }
805
dng_process_color8(uint16_t value,const uint16_t * lut,uint16_t black_level,float scale_factor)806 static uint16_t av_always_inline dng_process_color8(uint16_t value,
807 const uint16_t *lut,
808 uint16_t black_level,
809 float scale_factor) {
810 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
811 }
812
dng_blit(TiffContext * s,uint8_t * dst,int dst_stride,const uint8_t * src,int src_stride,int width,int height,int is_single_comp,int is_u16)813 static void dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
814 const uint8_t *src, int src_stride,
815 int width, int height, int is_single_comp, int is_u16)
816 {
817 int line, col;
818 float scale_factor;
819
820 scale_factor = 1.0f / (s->white_level - s->black_level);
821
822 if (is_single_comp) {
823 if (!is_u16)
824 return; /* <= 8bpp unsupported */
825
826 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
827 (split vertically in the middle). */
828 for (line = 0; line < height / 2; line++) {
829 uint16_t *dst_u16 = (uint16_t *)dst;
830 uint16_t *src_u16 = (uint16_t *)src;
831
832 /* Blit first half of input row row to initial row of output */
833 for (col = 0; col < width; col++)
834 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
835
836 /* Advance the destination pointer by a row (source pointer remains in the same place) */
837 dst += dst_stride * sizeof(uint16_t);
838 dst_u16 = (uint16_t *)dst;
839
840 /* Blit second half of input row row to next row of output */
841 for (col = 0; col < width; col++)
842 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
843
844 dst += dst_stride * sizeof(uint16_t);
845 src += src_stride * sizeof(uint16_t);
846 }
847 } else {
848 /* Input and output image are the same size and the MJpeg decoder has done per-component
849 deinterleaving, so blitting here is straightforward. */
850 if (is_u16) {
851 for (line = 0; line < height; line++) {
852 uint16_t *dst_u16 = (uint16_t *)dst;
853 uint16_t *src_u16 = (uint16_t *)src;
854
855 for (col = 0; col < width; col++)
856 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
857
858 dst += dst_stride * sizeof(uint16_t);
859 src += src_stride * sizeof(uint16_t);
860 }
861 } else {
862 for (line = 0; line < height; line++) {
863 uint8_t *dst_u8 = dst;
864 const uint8_t *src_u8 = src;
865
866 for (col = 0; col < width; col++)
867 *dst_u8++ = dng_process_color8(*src_u8++, s->dng_lut, s->black_level, scale_factor);
868
869 dst += dst_stride;
870 src += src_stride;
871 }
872 }
873 }
874 }
875
dng_decode_jpeg(AVCodecContext * avctx,AVFrame * frame,int tile_byte_count,int dst_x,int dst_y,int w,int h)876 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
877 int tile_byte_count, int dst_x, int dst_y, int w, int h)
878 {
879 TiffContext *s = avctx->priv_data;
880 AVPacket jpkt;
881 uint8_t *dst_data, *src_data;
882 uint32_t dst_offset; /* offset from dst buffer in pixels */
883 int is_single_comp, is_u16, pixel_size;
884 int ret;
885
886 if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb))
887 return AVERROR_INVALIDDATA;
888
889 /* Prepare a packet and send to the MJPEG decoder */
890 av_init_packet(&jpkt);
891 jpkt.data = (uint8_t*)s->gb.buffer;
892 jpkt.size = tile_byte_count;
893
894 if (s->is_bayer) {
895 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
896 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
897 image or not from its own data (and we need that information when decoding it). */
898 mjpegdecctx->bayer = 1;
899 }
900
901 ret = avcodec_send_packet(s->avctx_mjpeg, &jpkt);
902 if (ret < 0) {
903 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
904 return ret;
905 }
906
907 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
908 if (ret < 0) {
909 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
910
911 /* Normally skip, error if explode */
912 if (avctx->err_recognition & AV_EF_EXPLODE)
913 return AVERROR_INVALIDDATA;
914 else
915 return 0;
916 }
917
918 is_u16 = (s->bpp > 8);
919
920 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
921
922 if (s->jpgframe->width != s->avctx_mjpeg->width ||
923 s->jpgframe->height != s->avctx_mjpeg->height ||
924 s->jpgframe->format != s->avctx_mjpeg->pix_fmt)
925 return AVERROR_INVALIDDATA;
926
927 /* See dng_blit for explanation */
928 if (s->avctx_mjpeg->width == w * 2 &&
929 s->avctx_mjpeg->height == h / 2 &&
930 s->avctx_mjpeg->pix_fmt == AV_PIX_FMT_GRAY16LE) {
931 is_single_comp = 1;
932 } else if (s->avctx_mjpeg->width == w &&
933 s->avctx_mjpeg->height == h &&
934 s->avctx_mjpeg->pix_fmt == (is_u16 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8)
935 ) {
936 is_single_comp = 0;
937 } else
938 return AVERROR_INVALIDDATA;
939
940 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
941
942 if (is_single_comp && !is_u16) {
943 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
944 av_frame_unref(s->jpgframe);
945 return AVERROR_PATCHWELCOME;
946 }
947
948 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
949 dst_data = frame->data[0] + dst_offset * pixel_size;
950 src_data = s->jpgframe->data[0];
951
952 dng_blit(s,
953 dst_data,
954 frame->linesize[0] / pixel_size,
955 src_data,
956 s->jpgframe->linesize[0] / pixel_size,
957 w,
958 h,
959 is_single_comp,
960 is_u16);
961
962 av_frame_unref(s->jpgframe);
963
964 return 0;
965 }
966
dng_decode_tiles(AVCodecContext * avctx,AVFrame * frame,AVPacket * avpkt)967 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame, AVPacket *avpkt)
968 {
969 TiffContext *s = avctx->priv_data;
970 int tile_idx;
971 int tile_offset_offset, tile_offset;
972 int tile_byte_count_offset, tile_byte_count;
973 int tile_count_x, tile_count_y;
974 int tile_width, tile_length;
975 int has_width_leftover, has_height_leftover;
976 int tile_x = 0, tile_y = 0;
977 int pos_x = 0, pos_y = 0;
978 int ret;
979
980 s->jpgframe->width = s->tile_width;
981 s->jpgframe->height = s->tile_length;
982
983 s->avctx_mjpeg->width = s->tile_width;
984 s->avctx_mjpeg->height = s->tile_length;
985
986 has_width_leftover = (s->width % s->tile_width != 0);
987 has_height_leftover = (s->height % s->tile_length != 0);
988
989 /* Calculate tile counts (round up) */
990 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
991 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
992
993 /* Iterate over the number of tiles */
994 for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) {
995 tile_x = tile_idx % tile_count_x;
996 tile_y = tile_idx / tile_count_x;
997
998 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
999 tile_width = s->width % s->tile_width;
1000 else
1001 tile_width = s->tile_width;
1002
1003 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
1004 tile_length = s->height % s->tile_length;
1005 else
1006 tile_length = s->tile_length;
1007
1008 /* Read tile offset */
1009 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
1010 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
1011 tile_offset = ff_tget_long(&s->gb, s->le);
1012
1013 /* Read tile byte size */
1014 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
1015 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
1016 tile_byte_count = ff_tget_long(&s->gb, s->le);
1017
1018 /* Seek to tile data */
1019 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
1020
1021 /* Decode JPEG tile and copy it in the reference frame */
1022 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1023
1024 if (ret < 0)
1025 return ret;
1026
1027 /* Advance current positions */
1028 pos_x += tile_width;
1029 if (tile_x == tile_count_x - 1) { // If on the right edge
1030 pos_x = 0;
1031 pos_y += tile_length;
1032 }
1033 }
1034
1035 /* Frame is ready to be output */
1036 frame->pict_type = AV_PICTURE_TYPE_I;
1037 frame->key_frame = 1;
1038
1039 return avpkt->size;
1040 }
1041
dng_decode_strip(AVCodecContext * avctx,AVFrame * frame)1042 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame)
1043 {
1044 TiffContext *s = avctx->priv_data;
1045
1046 s->jpgframe->width = s->width;
1047 s->jpgframe->height = s->height;
1048
1049 s->avctx_mjpeg->width = s->width;
1050 s->avctx_mjpeg->height = s->height;
1051
1052 return dng_decode_jpeg(avctx, frame, s->stripsize, 0, 0, s->width, s->height);
1053 }
1054
init_image(TiffContext * s,ThreadFrame * frame)1055 static int init_image(TiffContext *s, ThreadFrame *frame)
1056 {
1057 int ret;
1058 int create_gray_palette = 0;
1059
1060 // make sure there is no aliasing in the following switch
1061 if (s->bpp >= 100 || s->bppcount >= 10) {
1062 av_log(s->avctx, AV_LOG_ERROR,
1063 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1064 s->bpp, s->bppcount);
1065 return AVERROR_INVALIDDATA;
1066 }
1067
1068 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1069 case 11:
1070 if (!s->palette_is_set) {
1071 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1072 break;
1073 }
1074 case 21:
1075 case 41:
1076 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1077 if (!s->palette_is_set) {
1078 create_gray_palette = 1;
1079 }
1080 break;
1081 case 81:
1082 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1083 break;
1084 case 121:
1085 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1086 break;
1087 case 10081:
1088 switch (AV_RL32(s->pattern)) {
1089 case 0x02010100:
1090 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1091 break;
1092 case 0x00010102:
1093 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1094 break;
1095 case 0x01000201:
1096 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1097 break;
1098 case 0x01020001:
1099 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1100 break;
1101 default:
1102 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1103 AV_RL32(s->pattern));
1104 return AVERROR_PATCHWELCOME;
1105 }
1106 break;
1107 case 10101:
1108 case 10121:
1109 case 10141:
1110 case 10161:
1111 switch (AV_RL32(s->pattern)) {
1112 case 0x02010100:
1113 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1114 break;
1115 case 0x00010102:
1116 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1117 break;
1118 case 0x01000201:
1119 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1120 break;
1121 case 0x01020001:
1122 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1123 break;
1124 default:
1125 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1126 AV_RL32(s->pattern));
1127 return AVERROR_PATCHWELCOME;
1128 }
1129 break;
1130 case 243:
1131 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1132 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1133 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1134 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1135 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1136 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1137 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1138 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1139 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1140 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1141 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1142 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1143 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1144 } else {
1145 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1146 return AVERROR_PATCHWELCOME;
1147 }
1148 } else
1149 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1150 break;
1151 case 161:
1152 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1153 break;
1154 case 162:
1155 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1156 break;
1157 case 322:
1158 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1159 break;
1160 case 324:
1161 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1162 break;
1163 case 405:
1164 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1165 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1166 else {
1167 av_log(s->avctx, AV_LOG_ERROR,
1168 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1169 return AVERROR_PATCHWELCOME;
1170 }
1171 break;
1172 case 483:
1173 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1174 break;
1175 case 644:
1176 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1177 break;
1178 case 1243:
1179 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1180 break;
1181 case 1324:
1182 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1183 break;
1184 case 1483:
1185 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1186 break;
1187 case 1644:
1188 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1189 break;
1190 default:
1191 av_log(s->avctx, AV_LOG_ERROR,
1192 "This format is not supported (bpp=%d, bppcount=%d)\n",
1193 s->bpp, s->bppcount);
1194 return AVERROR_INVALIDDATA;
1195 }
1196
1197 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1198 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1199 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1200 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1201 desc->nb_components < 3) {
1202 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1203 return AVERROR_INVALIDDATA;
1204 }
1205 }
1206
1207 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1208 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1209 if (ret < 0)
1210 return ret;
1211 }
1212 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1213 return ret;
1214 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1215 if (!create_gray_palette)
1216 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
1217 else {
1218 /* make default grayscale pal */
1219 int i;
1220 uint32_t *pal = (uint32_t *)frame->f->data[1];
1221 for (i = 0; i < 1<<s->bpp; i++)
1222 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1223 }
1224 }
1225 return 0;
1226 }
1227
set_sar(TiffContext * s,unsigned tag,unsigned num,unsigned den)1228 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1229 {
1230 int offset = tag == TIFF_YRES ? 2 : 0;
1231 s->res[offset++] = num;
1232 s->res[offset] = den;
1233 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1234 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1235 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1236 if (num > INT64_MAX || den > INT64_MAX) {
1237 num = num >> 1;
1238 den = den >> 1;
1239 }
1240 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1241 num, den, INT32_MAX);
1242 if (!s->avctx->sample_aspect_ratio.den)
1243 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1244 }
1245 }
1246
tiff_decode_tag(TiffContext * s,AVFrame * frame)1247 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1248 {
1249 AVFrameSideData *sd;
1250 GetByteContext gb_temp;
1251 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1252 int i, start;
1253 int pos;
1254 int ret;
1255 double *dp;
1256
1257 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1258 if (ret < 0) {
1259 goto end;
1260 }
1261 if (tag <= s->last_tag)
1262 return AVERROR_INVALIDDATA;
1263
1264 // We ignore TIFF_STRIP_SIZE as it is sometimes in the logic but wrong order around TIFF_STRIP_OFFS
1265 if (tag != TIFF_STRIP_SIZE)
1266 s->last_tag = tag;
1267
1268 off = bytestream2_tell(&s->gb);
1269 if (count == 1) {
1270 switch (type) {
1271 case TIFF_BYTE:
1272 case TIFF_SHORT:
1273 case TIFF_LONG:
1274 value = ff_tget(&s->gb, type, s->le);
1275 break;
1276 case TIFF_RATIONAL:
1277 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1278 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1279 if (!value2) {
1280 av_log(s->avctx, AV_LOG_ERROR, "Invalid denominator in rational\n");
1281 return AVERROR_INVALIDDATA;
1282 }
1283
1284 break;
1285 case TIFF_STRING:
1286 if (count <= 4) {
1287 break;
1288 }
1289 default:
1290 value = UINT_MAX;
1291 }
1292 }
1293
1294 switch (tag) {
1295 case TIFF_SUBFILE:
1296 s->is_thumbnail = (value != 0);
1297 break;
1298 case TIFF_WIDTH:
1299 s->width = value;
1300 break;
1301 case TIFF_HEIGHT:
1302 s->height = value;
1303 break;
1304 case TIFF_BPP:
1305 if (count > 5 || count <= 0) {
1306 av_log(s->avctx, AV_LOG_ERROR,
1307 "This format is not supported (bpp=%d, %d components)\n",
1308 value, count);
1309 return AVERROR_INVALIDDATA;
1310 }
1311 s->bppcount = count;
1312 if (count == 1)
1313 s->bpp = value;
1314 else {
1315 switch (type) {
1316 case TIFF_BYTE:
1317 case TIFF_SHORT:
1318 case TIFF_LONG:
1319 s->bpp = 0;
1320 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1321 return AVERROR_INVALIDDATA;
1322 for (i = 0; i < count; i++)
1323 s->bpp += ff_tget(&s->gb, type, s->le);
1324 break;
1325 default:
1326 s->bpp = -1;
1327 }
1328 }
1329 break;
1330 case TIFF_SAMPLES_PER_PIXEL:
1331 if (count != 1) {
1332 av_log(s->avctx, AV_LOG_ERROR,
1333 "Samples per pixel requires a single value, many provided\n");
1334 return AVERROR_INVALIDDATA;
1335 }
1336 if (value > 5 || value <= 0) {
1337 av_log(s->avctx, AV_LOG_ERROR,
1338 "Invalid samples per pixel %d\n", value);
1339 return AVERROR_INVALIDDATA;
1340 }
1341 if (s->bppcount == 1)
1342 s->bpp *= value;
1343 s->bppcount = value;
1344 break;
1345 case TIFF_COMPR:
1346 s->compr = value;
1347 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1348 s->predictor = 0;
1349 switch (s->compr) {
1350 case TIFF_RAW:
1351 case TIFF_PACKBITS:
1352 case TIFF_LZW:
1353 case TIFF_CCITT_RLE:
1354 break;
1355 case TIFF_G3:
1356 case TIFF_G4:
1357 s->fax_opts = 0;
1358 break;
1359 case TIFF_DEFLATE:
1360 case TIFF_ADOBE_DEFLATE:
1361 #if CONFIG_ZLIB
1362 break;
1363 #else
1364 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1365 return AVERROR(ENOSYS);
1366 #endif
1367 case TIFF_JPEG:
1368 case TIFF_NEWJPEG:
1369 s->is_jpeg = 1;
1370 break;
1371 case TIFF_LZMA:
1372 #if CONFIG_LZMA
1373 break;
1374 #else
1375 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1376 return AVERROR(ENOSYS);
1377 #endif
1378 default:
1379 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1380 s->compr);
1381 return AVERROR_INVALIDDATA;
1382 }
1383 break;
1384 case TIFF_ROWSPERSTRIP:
1385 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1386 value = s->height;
1387 s->rps = FFMIN(value, s->height);
1388 break;
1389 case TIFF_STRIP_OFFS:
1390 if (count == 1) {
1391 if (value > INT_MAX) {
1392 av_log(s->avctx, AV_LOG_ERROR,
1393 "strippos %u too large\n", value);
1394 return AVERROR_INVALIDDATA;
1395 }
1396 s->strippos = 0;
1397 s->stripoff = value;
1398 } else
1399 s->strippos = off;
1400 s->strips = count;
1401 if (s->strips == 1)
1402 s->rps = s->height;
1403 s->sot = type;
1404 break;
1405 case TIFF_STRIP_SIZE:
1406 if (count == 1) {
1407 if (value > INT_MAX) {
1408 av_log(s->avctx, AV_LOG_ERROR,
1409 "stripsize %u too large\n", value);
1410 return AVERROR_INVALIDDATA;
1411 }
1412 s->stripsizesoff = 0;
1413 s->stripsize = value;
1414 s->strips = 1;
1415 } else {
1416 s->stripsizesoff = off;
1417 }
1418 s->strips = count;
1419 s->sstype = type;
1420 break;
1421 case TIFF_XRES:
1422 case TIFF_YRES:
1423 set_sar(s, tag, value, value2);
1424 break;
1425 case TIFF_TILE_OFFSETS:
1426 s->tile_offsets_offset = off;
1427 s->tile_count = count;
1428 s->is_tiled = 1;
1429 break;
1430 case TIFF_TILE_BYTE_COUNTS:
1431 s->tile_byte_counts_offset = off;
1432 break;
1433 case TIFF_TILE_LENGTH:
1434 s->tile_length = value;
1435 break;
1436 case TIFF_TILE_WIDTH:
1437 s->tile_width = value;
1438 break;
1439 case TIFF_PREDICTOR:
1440 s->predictor = value;
1441 break;
1442 case TIFF_SUB_IFDS:
1443 if (count == 1)
1444 s->sub_ifd = value;
1445 else if (count > 1)
1446 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1447 break;
1448 case DNG_LINEARIZATION_TABLE:
1449 if (count > FF_ARRAY_ELEMS(s->dng_lut))
1450 return AVERROR_INVALIDDATA;
1451 for (int i = 0; i < count; i++)
1452 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1453 break;
1454 case DNG_BLACK_LEVEL:
1455 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1456 if (type == TIFF_RATIONAL) {
1457 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1458 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1459 if (!value2) {
1460 av_log(s->avctx, AV_LOG_ERROR, "Invalid black level denominator\n");
1461 return AVERROR_INVALIDDATA;
1462 }
1463
1464 s->black_level = value / value2;
1465 } else
1466 s->black_level = ff_tget(&s->gb, type, s->le);
1467 av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n");
1468 } else {
1469 s->black_level = value / value2;
1470 }
1471 break;
1472 case DNG_WHITE_LEVEL:
1473 s->white_level = value;
1474 break;
1475 case TIFF_CFA_PATTERN_DIM:
1476 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1477 ff_tget(&s->gb, type, s->le) != 2)) {
1478 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1479 return AVERROR_INVALIDDATA;
1480 }
1481 break;
1482 case TIFF_CFA_PATTERN:
1483 s->is_bayer = 1;
1484 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1485 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1486 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1487 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1488 break;
1489 case TIFF_PHOTOMETRIC:
1490 switch (value) {
1491 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1492 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1493 case TIFF_PHOTOMETRIC_RGB:
1494 case TIFF_PHOTOMETRIC_PALETTE:
1495 case TIFF_PHOTOMETRIC_SEPARATED:
1496 case TIFF_PHOTOMETRIC_YCBCR:
1497 case TIFF_PHOTOMETRIC_CFA:
1498 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1499 s->photometric = value;
1500 break;
1501 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1502 case TIFF_PHOTOMETRIC_CIE_LAB:
1503 case TIFF_PHOTOMETRIC_ICC_LAB:
1504 case TIFF_PHOTOMETRIC_ITU_LAB:
1505 case TIFF_PHOTOMETRIC_LOG_L:
1506 case TIFF_PHOTOMETRIC_LOG_LUV:
1507 avpriv_report_missing_feature(s->avctx,
1508 "PhotometricInterpretation 0x%04X",
1509 value);
1510 return AVERROR_PATCHWELCOME;
1511 default:
1512 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1513 "unknown\n", value);
1514 return AVERROR_INVALIDDATA;
1515 }
1516 break;
1517 case TIFF_FILL_ORDER:
1518 if (value < 1 || value > 2) {
1519 av_log(s->avctx, AV_LOG_ERROR,
1520 "Unknown FillOrder value %d, trying default one\n", value);
1521 value = 1;
1522 }
1523 s->fill_order = value - 1;
1524 break;
1525 case TIFF_PAL: {
1526 GetByteContext pal_gb[3];
1527 off = type_sizes[type];
1528 if (count / 3 > 256 ||
1529 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1530 return AVERROR_INVALIDDATA;
1531
1532 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1533 bytestream2_skip(&pal_gb[1], count / 3 * off);
1534 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1535
1536 off = (type_sizes[type] - 1) << 3;
1537 if (off > 31U) {
1538 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1539 return AVERROR_INVALIDDATA;
1540 }
1541
1542 for (i = 0; i < count / 3; i++) {
1543 uint32_t p = 0xFF000000;
1544 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1545 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1546 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1547 s->palette[i] = p;
1548 }
1549 s->palette_is_set = 1;
1550 break;
1551 }
1552 case TIFF_PLANAR:
1553 s->planar = value == 2;
1554 break;
1555 case TIFF_YCBCR_SUBSAMPLING:
1556 if (count != 2) {
1557 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1558 return AVERROR_INVALIDDATA;
1559 }
1560 for (i = 0; i < count; i++) {
1561 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1562 if (s->subsampling[i] <= 0) {
1563 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1564 s->subsampling[i] = 1;
1565 return AVERROR_INVALIDDATA;
1566 }
1567 }
1568 break;
1569 case TIFF_T4OPTIONS:
1570 if (s->compr == TIFF_G3)
1571 s->fax_opts = value;
1572 break;
1573 case TIFF_T6OPTIONS:
1574 if (s->compr == TIFF_G4)
1575 s->fax_opts = value;
1576 break;
1577 #define ADD_METADATA(count, name, sep)\
1578 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1579 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1580 goto end;\
1581 }
1582 case TIFF_MODEL_PIXEL_SCALE:
1583 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1584 break;
1585 case TIFF_MODEL_TRANSFORMATION:
1586 ADD_METADATA(count, "ModelTransformationTag", NULL);
1587 break;
1588 case TIFF_MODEL_TIEPOINT:
1589 ADD_METADATA(count, "ModelTiepointTag", NULL);
1590 break;
1591 case TIFF_GEO_KEY_DIRECTORY:
1592 if (s->geotag_count) {
1593 avpriv_request_sample(s->avctx, "Multiple geo key directories\n");
1594 return AVERROR_INVALIDDATA;
1595 }
1596 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1597 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1598 s->geotag_count = ff_tget_short(&s->gb, s->le);
1599 if (s->geotag_count > count / 4 - 1) {
1600 s->geotag_count = count / 4 - 1;
1601 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1602 }
1603 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1604 || s->geotag_count == 0) {
1605 s->geotag_count = 0;
1606 return -1;
1607 }
1608 s->geotags = av_mallocz_array(s->geotag_count, sizeof(TiffGeoTag));
1609 if (!s->geotags) {
1610 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1611 s->geotag_count = 0;
1612 goto end;
1613 }
1614 for (i = 0; i < s->geotag_count; i++) {
1615 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1616 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1617 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1618
1619 if (!s->geotags[i].type)
1620 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
1621 else
1622 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
1623 }
1624 break;
1625 case TIFF_GEO_DOUBLE_PARAMS:
1626 if (count >= INT_MAX / sizeof(int64_t))
1627 return AVERROR_INVALIDDATA;
1628 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1629 return AVERROR_INVALIDDATA;
1630 dp = av_malloc_array(count, sizeof(double));
1631 if (!dp) {
1632 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1633 goto end;
1634 }
1635 for (i = 0; i < count; i++)
1636 dp[i] = ff_tget_double(&s->gb, s->le);
1637 for (i = 0; i < s->geotag_count; i++) {
1638 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
1639 if (s->geotags[i].count == 0
1640 || s->geotags[i].offset + s->geotags[i].count > count) {
1641 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1642 } else if (s->geotags[i].val) {
1643 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1644 } else {
1645 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1646 if (!ap) {
1647 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1648 av_freep(&dp);
1649 return AVERROR(ENOMEM);
1650 }
1651 s->geotags[i].val = ap;
1652 }
1653 }
1654 }
1655 av_freep(&dp);
1656 break;
1657 case TIFF_GEO_ASCII_PARAMS:
1658 pos = bytestream2_tell(&s->gb);
1659 for (i = 0; i < s->geotag_count; i++) {
1660 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1661 if (s->geotags[i].count == 0
1662 || s->geotags[i].offset + s->geotags[i].count > count) {
1663 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1664 } else {
1665 char *ap;
1666
1667 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1668 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1669 return AVERROR_INVALIDDATA;
1670 if (s->geotags[i].val)
1671 return AVERROR_INVALIDDATA;
1672 ap = av_malloc(s->geotags[i].count);
1673 if (!ap) {
1674 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1675 return AVERROR(ENOMEM);
1676 }
1677 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1678 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1679 s->geotags[i].val = ap;
1680 }
1681 }
1682 }
1683 break;
1684 case TIFF_ICC_PROFILE:
1685 if (type != TIFF_UNDEFINED)
1686 return AVERROR_INVALIDDATA;
1687
1688 gb_temp = s->gb;
1689 bytestream2_seek(&gb_temp, SEEK_SET, off);
1690
1691 if (bytestream2_get_bytes_left(&gb_temp) < count)
1692 return AVERROR_INVALIDDATA;
1693
1694 sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count);
1695 if (!sd)
1696 return AVERROR(ENOMEM);
1697
1698 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1699 break;
1700 case TIFF_ARTIST:
1701 ADD_METADATA(count, "artist", NULL);
1702 break;
1703 case TIFF_COPYRIGHT:
1704 ADD_METADATA(count, "copyright", NULL);
1705 break;
1706 case TIFF_DATE:
1707 ADD_METADATA(count, "date", NULL);
1708 break;
1709 case TIFF_DOCUMENT_NAME:
1710 ADD_METADATA(count, "document_name", NULL);
1711 break;
1712 case TIFF_HOST_COMPUTER:
1713 ADD_METADATA(count, "computer", NULL);
1714 break;
1715 case TIFF_IMAGE_DESCRIPTION:
1716 ADD_METADATA(count, "description", NULL);
1717 break;
1718 case TIFF_MAKE:
1719 ADD_METADATA(count, "make", NULL);
1720 break;
1721 case TIFF_MODEL:
1722 ADD_METADATA(count, "model", NULL);
1723 break;
1724 case TIFF_PAGE_NAME:
1725 ADD_METADATA(count, "page_name", NULL);
1726 break;
1727 case TIFF_PAGE_NUMBER:
1728 ADD_METADATA(count, "page_number", " / ");
1729 // need to seek back to re-read the page number
1730 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1731 // read the page number
1732 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1733 // get back to where we were before the previous seek
1734 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1735 break;
1736 case TIFF_SOFTWARE_NAME:
1737 ADD_METADATA(count, "software", NULL);
1738 break;
1739 case DNG_VERSION:
1740 if (count == 4) {
1741 unsigned int ver[4];
1742 ver[0] = ff_tget(&s->gb, type, s->le);
1743 ver[1] = ff_tget(&s->gb, type, s->le);
1744 ver[2] = ff_tget(&s->gb, type, s->le);
1745 ver[3] = ff_tget(&s->gb, type, s->le);
1746
1747 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1748 ver[0], ver[1], ver[2], ver[3]);
1749
1750 tiff_set_type(s, TIFF_TYPE_DNG);
1751 }
1752 break;
1753 case CINEMADNG_TIME_CODES:
1754 case CINEMADNG_FRAME_RATE:
1755 case CINEMADNG_T_STOP:
1756 case CINEMADNG_REEL_NAME:
1757 case CINEMADNG_CAMERA_LABEL:
1758 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1759 break;
1760 default:
1761 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1762 av_log(s->avctx, AV_LOG_ERROR,
1763 "Unknown or unsupported tag %d/0x%0X\n",
1764 tag, tag);
1765 return AVERROR_INVALIDDATA;
1766 }
1767 }
1768 end:
1769 if (s->bpp > 64U) {
1770 av_log(s->avctx, AV_LOG_ERROR,
1771 "This format is not supported (bpp=%d, %d components)\n",
1772 s->bpp, count);
1773 s->bpp = 0;
1774 return AVERROR_INVALIDDATA;
1775 }
1776 bytestream2_seek(&s->gb, start, SEEK_SET);
1777 return 0;
1778 }
1779
decode_frame(AVCodecContext * avctx,void * data,int * got_frame,AVPacket * avpkt)1780 static int decode_frame(AVCodecContext *avctx,
1781 void *data, int *got_frame, AVPacket *avpkt)
1782 {
1783 TiffContext *const s = avctx->priv_data;
1784 AVFrame *const p = data;
1785 ThreadFrame frame = { .f = data };
1786 unsigned off, last_off;
1787 int le, ret, plane, planes;
1788 int i, j, entries, stride;
1789 unsigned soff, ssize;
1790 uint8_t *dst;
1791 GetByteContext stripsizes;
1792 GetByteContext stripdata;
1793 int retry_for_subifd, retry_for_page;
1794 int is_dng;
1795 int has_tile_bits, has_strip_bits;
1796
1797 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1798
1799 // parse image header
1800 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1801 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1802 return ret;
1803 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1804 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1805 return AVERROR_INVALIDDATA;
1806 }
1807 s->le = le;
1808 // TIFF_BPP is not a required tag and defaults to 1
1809
1810 s->tiff_type = TIFF_TYPE_TIFF;
1811 again:
1812 s->is_thumbnail = 0;
1813 s->bppcount = s->bpp = 1;
1814 s->photometric = TIFF_PHOTOMETRIC_NONE;
1815 s->compr = TIFF_RAW;
1816 s->fill_order = 0;
1817 s->white_level = 0;
1818 s->is_bayer = 0;
1819 s->is_tiled = 0;
1820 s->is_jpeg = 0;
1821 s->cur_page = 0;
1822 s->last_tag = 0;
1823
1824 for (i = 0; i < 65536; i++)
1825 s->dng_lut[i] = i;
1826
1827 free_geotags(s);
1828
1829 // Reset these offsets so we can tell if they were set this frame
1830 s->stripsizesoff = s->strippos = 0;
1831 /* parse image file directory */
1832 bytestream2_seek(&s->gb, off, SEEK_SET);
1833 entries = ff_tget_short(&s->gb, le);
1834 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1835 return AVERROR_INVALIDDATA;
1836 for (i = 0; i < entries; i++) {
1837 if ((ret = tiff_decode_tag(s, p)) < 0)
1838 return ret;
1839 }
1840
1841 if (s->get_thumbnail && !s->is_thumbnail) {
1842 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1843 return AVERROR_EOF;
1844 }
1845
1846 /** whether we should process this IFD's SubIFD */
1847 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1848 /** whether we should process this multi-page IFD's next page */
1849 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1850
1851 last_off = off;
1852 if (retry_for_page) {
1853 // set offset to the next IFD
1854 off = ff_tget_long(&s->gb, le);
1855 } else if (retry_for_subifd) {
1856 // set offset to the SubIFD
1857 off = s->sub_ifd;
1858 }
1859
1860 if (retry_for_subifd || retry_for_page) {
1861 if (!off) {
1862 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1863 return AVERROR_INVALIDDATA;
1864 }
1865 if (off <= last_off) {
1866 avpriv_request_sample(s->avctx, "non increasing IFD offset\n");
1867 return AVERROR_INVALIDDATA;
1868 }
1869 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1870 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1871 return AVERROR_INVALIDDATA;
1872 }
1873 s->sub_ifd = 0;
1874 goto again;
1875 }
1876
1877 /* At this point we've decided on which (Sub)IFD to process */
1878
1879 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1880
1881 for (i = 0; i<s->geotag_count; i++) {
1882 const char *keyname = get_geokey_name(s->geotags[i].key);
1883 if (!keyname) {
1884 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1885 continue;
1886 }
1887 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1888 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1889 continue;
1890 }
1891 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1892 if (ret<0) {
1893 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1894 return ret;
1895 }
1896 }
1897
1898 if (is_dng) {
1899 int bps;
1900
1901 if (s->bpp % s->bppcount)
1902 return AVERROR_INVALIDDATA;
1903 bps = s->bpp / s->bppcount;
1904 if (bps < 8 || bps > 32)
1905 return AVERROR_INVALIDDATA;
1906
1907 if (s->white_level == 0)
1908 s->white_level = (1LL << bps) - 1; /* Default value as per the spec */
1909
1910 if (s->white_level <= s->black_level) {
1911 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1912 s->black_level, s->white_level);
1913 return AVERROR_INVALIDDATA;
1914 }
1915
1916 if (s->planar)
1917 return AVERROR_PATCHWELCOME;
1918 }
1919
1920 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1921 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1922 return AVERROR_INVALIDDATA;
1923 }
1924
1925 has_tile_bits = s->is_tiled || s->tile_byte_counts_offset || s->tile_offsets_offset || s->tile_width || s->tile_length || s->tile_count;
1926 has_strip_bits = s->strippos || s->strips || s->stripoff || s->rps || s->sot || s->sstype || s->stripsize || s->stripsizesoff;
1927
1928 if (has_tile_bits && has_strip_bits) {
1929 av_log(avctx, AV_LOG_ERROR, "Tiled TIFF is not allowed to strip\n");
1930 return AVERROR_INVALIDDATA;
1931 }
1932
1933 /* now we have the data and may start decoding */
1934 if ((ret = init_image(s, &frame)) < 0)
1935 return ret;
1936
1937 if (!s->is_tiled) {
1938 if (s->strips == 1 && !s->stripsize) {
1939 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1940 s->stripsize = avpkt->size - s->stripoff;
1941 }
1942
1943 if (s->stripsizesoff) {
1944 if (s->stripsizesoff >= (unsigned)avpkt->size)
1945 return AVERROR_INVALIDDATA;
1946 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1947 avpkt->size - s->stripsizesoff);
1948 }
1949 if (s->strippos) {
1950 if (s->strippos >= (unsigned)avpkt->size)
1951 return AVERROR_INVALIDDATA;
1952 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1953 avpkt->size - s->strippos);
1954 }
1955
1956 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1957 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1958 return AVERROR_INVALIDDATA;
1959 }
1960 }
1961
1962 if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW ||
1963 s->photometric == TIFF_PHOTOMETRIC_CFA) {
1964 p->color_trc = AVCOL_TRC_LINEAR;
1965 } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) {
1966 p->color_trc = AVCOL_TRC_GAMMA22;
1967 }
1968
1969 /* Handle DNG images with JPEG-compressed tiles */
1970
1971 if (is_dng && s->is_tiled) {
1972 if (!s->is_jpeg) {
1973 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1974 return AVERROR_PATCHWELCOME;
1975 } else if (!s->is_bayer) {
1976 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1977 return AVERROR_PATCHWELCOME;
1978 } else {
1979 if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0)
1980 *got_frame = 1;
1981 return ret;
1982 }
1983 }
1984
1985 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1986
1987 planes = s->planar ? s->bppcount : 1;
1988 for (plane = 0; plane < planes; plane++) {
1989 uint8_t *five_planes = NULL;
1990 int remaining = avpkt->size;
1991 int decoded_height;
1992 stride = p->linesize[plane];
1993 dst = p->data[plane];
1994 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1995 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1996 stride = stride * 5 / 4;
1997 five_planes =
1998 dst = av_malloc(stride * s->height);
1999 if (!dst)
2000 return AVERROR(ENOMEM);
2001 }
2002 for (i = 0; i < s->height; i += s->rps) {
2003 if (i)
2004 dst += s->rps * stride;
2005 if (s->stripsizesoff)
2006 ssize = ff_tget(&stripsizes, s->sstype, le);
2007 else
2008 ssize = s->stripsize;
2009
2010 if (s->strippos)
2011 soff = ff_tget(&stripdata, s->sot, le);
2012 else
2013 soff = s->stripoff;
2014
2015 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
2016 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
2017 av_freep(&five_planes);
2018 return AVERROR_INVALIDDATA;
2019 }
2020 remaining -= ssize;
2021 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
2022 FFMIN(s->rps, s->height - i))) < 0) {
2023 if (avctx->err_recognition & AV_EF_EXPLODE) {
2024 av_freep(&five_planes);
2025 return ret;
2026 }
2027 break;
2028 }
2029 }
2030 decoded_height = FFMIN(i, s->height);
2031
2032 if (s->predictor == 2) {
2033 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
2034 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
2035 return AVERROR_PATCHWELCOME;
2036 }
2037 dst = five_planes ? five_planes : p->data[plane];
2038 soff = s->bpp >> 3;
2039 if (s->planar)
2040 soff = FFMAX(soff / s->bppcount, 1);
2041 ssize = s->width * soff;
2042 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
2043 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
2044 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
2045 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2046 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2047 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2048 for (i = 0; i < decoded_height; i++) {
2049 for (j = soff; j < ssize; j += 2)
2050 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2051 dst += stride;
2052 }
2053 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2054 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2055 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2056 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2057 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2058 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2059 for (i = 0; i < decoded_height; i++) {
2060 for (j = soff; j < ssize; j += 2)
2061 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2062 dst += stride;
2063 }
2064 } else {
2065 for (i = 0; i < decoded_height; i++) {
2066 for (j = soff; j < ssize; j++)
2067 dst[j] += dst[j - soff];
2068 dst += stride;
2069 }
2070 }
2071 }
2072
2073 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2074 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2075 dst = p->data[plane];
2076 for (i = 0; i < s->height; i++) {
2077 for (j = 0; j < stride; j++)
2078 dst[j] = c - dst[j];
2079 dst += stride;
2080 }
2081 }
2082
2083 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2084 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2085 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2086 uint8_t *src = five_planes ? five_planes : p->data[plane];
2087 dst = p->data[plane];
2088 for (i = 0; i < s->height; i++) {
2089 for (j = 0; j < s->width; j++) {
2090 int k = 255 - src[x * j + 3];
2091 int r = (255 - src[x * j ]) * k;
2092 int g = (255 - src[x * j + 1]) * k;
2093 int b = (255 - src[x * j + 2]) * k;
2094 dst[4 * j ] = r * 257 >> 16;
2095 dst[4 * j + 1] = g * 257 >> 16;
2096 dst[4 * j + 2] = b * 257 >> 16;
2097 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2098 }
2099 src += stride;
2100 dst += p->linesize[plane];
2101 }
2102 av_freep(&five_planes);
2103 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2104 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2105 dst = p->data[plane];
2106 for (i = 0; i < s->height; i++) {
2107 for (j = 0; j < s->width; j++) {
2108 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2109 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2110 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2111 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2112 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2113 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2114 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2115 AV_WB16(dst + 8 * j + 6, 65535);
2116 }
2117 dst += p->linesize[plane];
2118 }
2119 }
2120 }
2121
2122 if (s->planar && s->bppcount > 2) {
2123 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2124 FFSWAP(int, p->linesize[0], p->linesize[2]);
2125 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2126 FFSWAP(int, p->linesize[0], p->linesize[1]);
2127 }
2128
2129 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2130 uint16_t *dst = (uint16_t *)p->data[0];
2131 for (i = 0; i < s->height; i++) {
2132 for (j = 0; j < s->width; j++)
2133 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2134 dst += stride / 2;
2135 }
2136 }
2137
2138 *got_frame = 1;
2139
2140 return avpkt->size;
2141 }
2142
tiff_init(AVCodecContext * avctx)2143 static av_cold int tiff_init(AVCodecContext *avctx)
2144 {
2145 TiffContext *s = avctx->priv_data;
2146 const AVCodec *codec;
2147 int ret;
2148
2149 s->width = 0;
2150 s->height = 0;
2151 s->subsampling[0] =
2152 s->subsampling[1] = 1;
2153 s->avctx = avctx;
2154 ff_lzw_decode_open(&s->lzw);
2155 if (!s->lzw)
2156 return AVERROR(ENOMEM);
2157 ff_ccitt_unpack_init();
2158
2159 /* Allocate JPEG frame */
2160 s->jpgframe = av_frame_alloc();
2161 if (!s->jpgframe)
2162 return AVERROR(ENOMEM);
2163
2164 /* Prepare everything needed for JPEG decoding */
2165 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2166 if (!codec)
2167 return AVERROR_BUG;
2168 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2169 if (!s->avctx_mjpeg)
2170 return AVERROR(ENOMEM);
2171 s->avctx_mjpeg->flags = avctx->flags;
2172 s->avctx_mjpeg->flags2 = avctx->flags2;
2173 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2174 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2175 ret = ff_codec_open2_recursive(s->avctx_mjpeg, codec, NULL);
2176 if (ret < 0) {
2177 return ret;
2178 }
2179
2180 return 0;
2181 }
2182
tiff_end(AVCodecContext * avctx)2183 static av_cold int tiff_end(AVCodecContext *avctx)
2184 {
2185 TiffContext *const s = avctx->priv_data;
2186
2187 free_geotags(s);
2188
2189 ff_lzw_decode_close(&s->lzw);
2190 av_freep(&s->deinvert_buf);
2191 s->deinvert_buf_size = 0;
2192 av_freep(&s->yuv_line);
2193 s->yuv_line_size = 0;
2194 av_freep(&s->fax_buffer);
2195 s->fax_buffer_size = 0;
2196 av_frame_free(&s->jpgframe);
2197 avcodec_free_context(&s->avctx_mjpeg);
2198 return 0;
2199 }
2200
2201 #define OFFSET(x) offsetof(TiffContext, x)
2202 static const AVOption tiff_options[] = {
2203 { "subimage", "decode subimage instead if available", OFFSET(get_subimage), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM },
2204 { "thumbnail", "decode embedded thumbnail subimage instead if available", OFFSET(get_thumbnail), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM },
2205 { "page", "page number of multi-page image to decode (starting from 1)", OFFSET(get_page), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM },
2206 { NULL },
2207 };
2208
2209 static const AVClass tiff_decoder_class = {
2210 .class_name = "TIFF decoder",
2211 .item_name = av_default_item_name,
2212 .option = tiff_options,
2213 .version = LIBAVUTIL_VERSION_INT,
2214 };
2215
2216 AVCodec ff_tiff_decoder = {
2217 .name = "tiff",
2218 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2219 .type = AVMEDIA_TYPE_VIDEO,
2220 .id = AV_CODEC_ID_TIFF,
2221 .priv_data_size = sizeof(TiffContext),
2222 .init = tiff_init,
2223 .close = tiff_end,
2224 .decode = decode_frame,
2225 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2226 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
2227 .priv_class = &tiff_decoder_class,
2228 };
2229