FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/tiff.c
Date: 2022-01-27 16:04:32
Exec Total Coverage
Lines: 370 1351 27.4%
Branches: 232 1118 20.8%

Line Branch Exec Source
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 AVPacket *jpkt; // encoded JPEG tile
62 AVFrame *jpgframe; // decoded JPEG tile
63
64 int get_subimage;
65 uint16_t get_page;
66 int get_thumbnail;
67
68 enum TiffType tiff_type;
69 int width, height;
70 unsigned int bpp, bppcount;
71 uint32_t palette[256];
72 int palette_is_set;
73 int le;
74 enum TiffCompr compr;
75 enum TiffPhotometric photometric;
76 int planar;
77 int subsampling[2];
78 int fax_opts;
79 int predictor;
80 int fill_order;
81 uint32_t res[4];
82 int is_thumbnail;
83 unsigned last_tag;
84
85 int is_bayer;
86 uint8_t pattern[4];
87 unsigned black_level;
88 unsigned white_level;
89 uint16_t dng_lut[65536];
90
91 uint32_t sub_ifd;
92 uint16_t cur_page;
93
94 int strips, rps, sstype;
95 int sot;
96 int stripsizesoff, stripsize, stripoff, strippos;
97 LZWState *lzw;
98
99 /* Tile support */
100 int is_tiled;
101 int tile_byte_counts_offset, tile_offsets_offset;
102 int tile_width, tile_length;
103 int tile_count;
104
105 int is_jpeg;
106
107 uint8_t *deinvert_buf;
108 int deinvert_buf_size;
109 uint8_t *yuv_line;
110 unsigned int yuv_line_size;
111
112 int geotag_count;
113 TiffGeoTag *geotags;
114 } TiffContext;
115
116 static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
117 if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
118 s->tiff_type = tiff_type;
119 }
120
121 30 static void free_geotags(TiffContext *const s)
122 {
123 int i;
124
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30 for (i = 0; i < s->geotag_count; i++) {
125 if (s->geotags[i].val)
126 av_freep(&s->geotags[i].val);
127 }
128 30 av_freep(&s->geotags);
129 30 s->geotag_count = 0;
130 30 }
131
132 #define RET_GEOKEY(TYPE, array, element)\
133 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
134 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_name_type_map))\
135 return tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
136
137 static const char *get_geokey_name(int key)
138 {
139 RET_GEOKEY(VERT, vert, name);
140 RET_GEOKEY(PROJ, proj, name);
141 RET_GEOKEY(GEOG, geog, name);
142 RET_GEOKEY(CONF, conf, name);
143
144 return NULL;
145 }
146
147 static int get_geokey_type(int key)
148 {
149 RET_GEOKEY(VERT, vert, type);
150 RET_GEOKEY(PROJ, proj, type);
151 RET_GEOKEY(GEOG, geog, type);
152 RET_GEOKEY(CONF, conf, type);
153
154 return AVERROR_INVALIDDATA;
155 }
156
157 static int cmp_id_key(const void *id, const void *k)
158 {
159 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
160 }
161
162 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
163 {
164 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
165 if(r)
166 return r->name;
167
168 return NULL;
169 }
170
171 static char *get_geokey_val(int key, int val)
172 {
173 char *ap;
174
175 if (val == TIFF_GEO_KEY_UNDEFINED)
176 return av_strdup("undefined");
177 if (val == TIFF_GEO_KEY_USER_DEFINED)
178 return av_strdup("User-Defined");
179
180 #define RET_GEOKEY_VAL(TYPE, array)\
181 if (val >= TIFF_##TYPE##_OFFSET &&\
182 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_codes))\
183 return av_strdup(tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
184
185 switch (key) {
186 case TIFF_GT_MODEL_TYPE_GEOKEY:
187 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
188 break;
189 case TIFF_GT_RASTER_TYPE_GEOKEY:
190 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
191 break;
192 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
193 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
194 case TIFF_VERTICAL_UNITS_GEOKEY:
195 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
196 break;
197 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
198 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
199 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
200 break;
201 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
202 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
203 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
204 break;
205 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
206 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
207 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
208 break;
209 case TIFF_GEOG_ELLIPSOID_GEOKEY:
210 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
211 break;
212 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
213 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
214 break;
215 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
216 ap = av_strdup(search_keyval(tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(tiff_proj_cs_type_codes), val));
217 if(ap) return ap;
218 break;
219 case TIFF_PROJECTION_GEOKEY:
220 ap = av_strdup(search_keyval(tiff_projection_codes, FF_ARRAY_ELEMS(tiff_projection_codes), val));
221 if(ap) return ap;
222 break;
223 case TIFF_PROJ_COORD_TRANS_GEOKEY:
224 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
225 break;
226 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
227 RET_GEOKEY_VAL(VERT_CS, vert_cs);
228 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
229 break;
230
231 }
232
233 ap = av_malloc(14);
234 if (ap)
235 snprintf(ap, 14, "Unknown-%d", val);
236 return ap;
237 }
238
239 static char *doubles2str(double *dp, int count, const char *sep)
240 {
241 int i;
242 char *ap, *ap0;
243 uint64_t component_len;
244 if (!sep) sep = ", ";
245 component_len = 24LL + strlen(sep);
246 if (count >= (INT_MAX - 1)/component_len)
247 return NULL;
248 ap = av_malloc(component_len * count + 1);
249 if (!ap)
250 return NULL;
251 ap0 = ap;
252 ap[0] = '\0';
253 for (i = 0; i < count; i++) {
254 unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep);
255 if(l >= component_len) {
256 av_free(ap0);
257 return NULL;
258 }
259 ap += l;
260 }
261 ap0[strlen(ap0) - strlen(sep)] = '\0';
262 return ap0;
263 }
264
265 14 static int add_metadata(int count, int type,
266 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
267 {
268
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14 switch(type) {
269 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, &frame->metadata);
270 2 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata);
271 12 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata);
272 default : return AVERROR_INVALIDDATA;
273 };
274 }
275
276 /**
277 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
278 */
279 static uint16_t av_always_inline dng_process_color16(uint16_t value,
280 const uint16_t *lut,
281 uint16_t black_level,
282 float scale_factor)
283 {
284 float value_norm;
285
286 // Lookup table lookup
287 if (lut)
288 value = lut[value];
289
290 // Black level subtraction
291 value = av_clip_uint16_c((unsigned)value - black_level);
292
293 // Color scaling
294 value_norm = (float)value * scale_factor;
295
296 value = av_clip_uint16_c(value_norm * 65535);
297
298 return value;
299 }
300
301 static uint16_t av_always_inline dng_process_color8(uint16_t value,
302 const uint16_t *lut,
303 uint16_t black_level,
304 float scale_factor)
305 {
306 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
307 }
308
309 static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
310 const uint8_t *src, int src_stride, int width, int height,
311 int is_single_comp, int is_u16)
312 {
313 int line, col;
314 float scale_factor;
315
316 scale_factor = 1.0f / (s->white_level - s->black_level);
317
318 if (is_single_comp) {
319 if (!is_u16)
320 return; /* <= 8bpp unsupported */
321
322 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
323 (split vertically in the middle). */
324 for (line = 0; line < height / 2; line++) {
325 uint16_t *dst_u16 = (uint16_t *)dst;
326 uint16_t *src_u16 = (uint16_t *)src;
327
328 /* Blit first half of input row row to initial row of output */
329 for (col = 0; col < width; col++)
330 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
331
332 /* Advance the destination pointer by a row (source pointer remains in the same place) */
333 dst += dst_stride * sizeof(uint16_t);
334 dst_u16 = (uint16_t *)dst;
335
336 /* Blit second half of input row row to next row of output */
337 for (col = 0; col < width; col++)
338 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
339
340 dst += dst_stride * sizeof(uint16_t);
341 src += src_stride * sizeof(uint16_t);
342 }
343 } else {
344 /* Input and output image are the same size and the MJpeg decoder has done per-component
345 deinterleaving, so blitting here is straightforward. */
346 if (is_u16) {
347 for (line = 0; line < height; line++) {
348 uint16_t *dst_u16 = (uint16_t *)dst;
349 uint16_t *src_u16 = (uint16_t *)src;
350
351 for (col = 0; col < width; col++)
352 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
353
354 dst += dst_stride * sizeof(uint16_t);
355 src += src_stride * sizeof(uint16_t);
356 }
357 } else {
358 for (line = 0; line < height; line++) {
359 uint8_t *dst_u8 = dst;
360 const uint8_t *src_u8 = src;
361
362 for (col = 0; col < width; col++)
363 *dst_u8++ = dng_process_color8(*src_u8++, s->dng_lut, s->black_level, scale_factor);
364
365 dst += dst_stride;
366 src += src_stride;
367 }
368 }
369 }
370 }
371
372 42246 static void av_always_inline horizontal_fill(TiffContext *s,
373 unsigned int bpp, uint8_t* dst,
374 int usePtr, const uint8_t *src,
375 uint8_t c, int width, int offset)
376 {
377
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42246 switch (bpp) {
378 case 1:
379 while (--width >= 0) {
380 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
381 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
382 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
383 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
384 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
385 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
386 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
387 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
388 }
389 break;
390 case 2:
391 while (--width >= 0) {
392 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
393 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
394 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
395 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
396 }
397 break;
398 case 4:
399 while (--width >= 0) {
400 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
401 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
402 }
403 break;
404 case 10:
405 case 12:
406 case 14: {
407 uint16_t *dst16 = (uint16_t *)dst;
408 int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
409 uint8_t shift = is_dng ? 0 : 16 - bpp;
410 GetBitContext gb;
411
412 init_get_bits8(&gb, src, width);
413 for (int i = 0; i < s->width; i++) {
414 dst16[i] = get_bits(&gb, bpp) << shift;
415 }
416 }
417 break;
418 42246 default:
419
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42246 if (usePtr) {
420 39747 memcpy(dst + offset, src, width);
421 } else {
422 2499 memset(dst + offset, c, width);
423 }
424 }
425 42246 }
426
427 36 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
428 {
429 int i;
430
431 36 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
432
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36 if (!s->deinvert_buf)
433 return AVERROR(ENOMEM);
434
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502274 for (i = 0; i < size; i++)
435 502238 s->deinvert_buf[i] = ff_reverse[src[i]];
436
437 36 return 0;
438 }
439
440 static void unpack_gray(TiffContext *s, AVFrame *p,
441 const uint8_t *src, int lnum, int width, int bpp)
442 {
443 GetBitContext gb;
444 uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]);
445
446 init_get_bits8(&gb, src, width);
447
448 for (int i = 0; i < s->width; i++) {
449 dst[i] = get_bits(&gb, bpp);
450 }
451 }
452
453 static void unpack_yuv(TiffContext *s, AVFrame *p,
454 const uint8_t *src, int lnum)
455 {
456 int i, j, k;
457 int w = (s->width - 1) / s->subsampling[0] + 1;
458 uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
459 uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
460 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
461 for (i = 0; i < w; i++) {
462 for (j = 0; j < s->subsampling[1]; j++)
463 for (k = 0; k < s->subsampling[0]; k++)
464 p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
465 FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++;
466 *pu++ = *src++;
467 *pv++ = *src++;
468 }
469 }else{
470 for (i = 0; i < w; i++) {
471 for (j = 0; j < s->subsampling[1]; j++)
472 for (k = 0; k < s->subsampling[0]; k++)
473 p->data[0][(lnum + j) * p->linesize[0] +
474 i * s->subsampling[0] + k] = *src++;
475 *pu++ = *src++;
476 *pv++ = *src++;
477 }
478 }
479 }
480
481 #if CONFIG_ZLIB
482 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
483 int size)
484 {
485 z_stream zstream = { 0 };
486 int zret;
487
488 zstream.next_in = src;
489 zstream.avail_in = size;
490 zstream.next_out = dst;
491 zstream.avail_out = *len;
492 zret = inflateInit(&zstream);
493 if (zret != Z_OK) {
494 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
495 return zret;
496 }
497 zret = inflate(&zstream, Z_SYNC_FLUSH);
498 inflateEnd(&zstream);
499 *len = zstream.total_out;
500 return zret == Z_STREAM_END ? Z_OK : zret;
501 }
502
503 static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
504 const uint8_t *src, int size, int width, int lines,
505 int strip_start, int is_yuv)
506 {
507 uint8_t *zbuf;
508 unsigned long outlen;
509 int ret, line;
510 outlen = width * lines;
511 zbuf = av_malloc(outlen);
512 if (!zbuf)
513 return AVERROR(ENOMEM);
514 if (s->fill_order) {
515 if ((ret = deinvert_buffer(s, src, size)) < 0) {
516 av_free(zbuf);
517 return ret;
518 }
519 src = s->deinvert_buf;
520 }
521 ret = tiff_uncompress(zbuf, &outlen, src, size);
522 if (ret != Z_OK) {
523 av_log(s->avctx, AV_LOG_ERROR,
524 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
525 (unsigned long)width * lines, ret);
526 av_free(zbuf);
527 return AVERROR_UNKNOWN;
528 }
529 src = zbuf;
530 for (line = 0; line < lines; line++) {
531 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
532 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
533 } else {
534 memcpy(dst, src, width);
535 }
536 if (is_yuv) {
537 unpack_yuv(s, p, dst, strip_start + line);
538 line += s->subsampling[1] - 1;
539 }
540 dst += stride;
541 src += width;
542 }
543 av_free(zbuf);
544 return 0;
545 }
546 #endif
547
548 #if CONFIG_LZMA
549 static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src,
550 int size)
551 {
552 lzma_stream stream = LZMA_STREAM_INIT;
553 lzma_ret ret;
554
555 stream.next_in = (uint8_t *)src;
556 stream.avail_in = size;
557 stream.next_out = dst;
558 stream.avail_out = *len;
559 ret = lzma_stream_decoder(&stream, UINT64_MAX, 0);
560 if (ret != LZMA_OK) {
561 av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret);
562 return ret;
563 }
564 ret = lzma_code(&stream, LZMA_RUN);
565 lzma_end(&stream);
566 *len = stream.total_out;
567 return ret == LZMA_STREAM_END ? LZMA_OK : ret;
568 }
569
570 static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
571 const uint8_t *src, int size, int width, int lines,
572 int strip_start, int is_yuv)
573 {
574 uint64_t outlen = width * (uint64_t)lines;
575 int ret, line;
576 uint8_t *buf = av_malloc(outlen);
577 if (!buf)
578 return AVERROR(ENOMEM);
579 if (s->fill_order) {
580 if ((ret = deinvert_buffer(s, src, size)) < 0) {
581 av_free(buf);
582 return ret;
583 }
584 src = s->deinvert_buf;
585 }
586 ret = tiff_uncompress_lzma(buf, &outlen, src, size);
587 if (ret != LZMA_OK) {
588 av_log(s->avctx, AV_LOG_ERROR,
589 "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen,
590 (uint64_t)width * lines, ret);
591 av_free(buf);
592 return AVERROR_UNKNOWN;
593 }
594 src = buf;
595 for (line = 0; line < lines; line++) {
596 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
597 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
598 } else {
599 memcpy(dst, src, width);
600 }
601 if (is_yuv) {
602 unpack_yuv(s, p, dst, strip_start + line);
603 line += s->subsampling[1] - 1;
604 }
605 dst += stride;
606 src += width;
607 }
608 av_free(buf);
609 return 0;
610 }
611 #endif
612
613 36 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
614 const uint8_t *src, int size, int width, int lines)
615 {
616 int line;
617 int ret;
618
619
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36 if (s->fill_order) {
620
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36 if ((ret = deinvert_buffer(s, src, size)) < 0)
621 return ret;
622 36 src = s->deinvert_buf;
623 }
624 36 ret = ff_ccitt_unpack(s->avctx, src, size, dst, lines, stride,
625 s->compr, s->fax_opts);
626
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36 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
627 for (line = 0; line < lines; line++) {
628 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
629 dst += stride;
630 }
631 36 return ret;
632 }
633
634 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
635 int tile_byte_count, int dst_x, int dst_y, int w, int h)
636 {
637 TiffContext *s = avctx->priv_data;
638 uint8_t *dst_data, *src_data;
639 uint32_t dst_offset; /* offset from dst buffer in pixels */
640 int is_single_comp, is_u16, pixel_size;
641 int ret;
642
643 if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb))
644 return AVERROR_INVALIDDATA;
645
646 /* Prepare a packet and send to the MJPEG decoder */
647 av_packet_unref(s->jpkt);
648 s->jpkt->data = (uint8_t*)s->gb.buffer;
649 s->jpkt->size = tile_byte_count;
650
651 if (s->is_bayer) {
652 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
653 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
654 image or not from its own data (and we need that information when decoding it). */
655 mjpegdecctx->bayer = 1;
656 }
657
658 ret = avcodec_send_packet(s->avctx_mjpeg, s->jpkt);
659 if (ret < 0) {
660 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
661 return ret;
662 }
663
664 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
665 if (ret < 0) {
666 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
667
668 /* Normally skip, error if explode */
669 if (avctx->err_recognition & AV_EF_EXPLODE)
670 return AVERROR_INVALIDDATA;
671 else
672 return 0;
673 }
674
675 is_u16 = (s->bpp > 8);
676
677 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
678
679 if (s->jpgframe->width != s->avctx_mjpeg->width ||
680 s->jpgframe->height != s->avctx_mjpeg->height ||
681 s->jpgframe->format != s->avctx_mjpeg->pix_fmt)
682 return AVERROR_INVALIDDATA;
683
684 /* See dng_blit for explanation */
685 if (s->avctx_mjpeg->width == w * 2 &&
686 s->avctx_mjpeg->height == h / 2 &&
687 s->avctx_mjpeg->pix_fmt == AV_PIX_FMT_GRAY16LE) {
688 is_single_comp = 1;
689 } else if (s->avctx_mjpeg->width >= w &&
690 s->avctx_mjpeg->height >= h &&
691 s->avctx_mjpeg->pix_fmt == (is_u16 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8)
692 ) {
693 is_single_comp = 0;
694 } else
695 return AVERROR_INVALIDDATA;
696
697 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
698
699 if (is_single_comp && !is_u16) {
700 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
701 av_frame_unref(s->jpgframe);
702 return AVERROR_PATCHWELCOME;
703 }
704
705 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
706 dst_data = frame->data[0] + dst_offset * pixel_size;
707 src_data = s->jpgframe->data[0];
708
709 dng_blit(s,
710 dst_data,
711 frame->linesize[0] / pixel_size,
712 src_data,
713 s->jpgframe->linesize[0] / pixel_size,
714 w,
715 h,
716 is_single_comp,
717 is_u16);
718
719 av_frame_unref(s->jpgframe);
720
721 return 0;
722 }
723
724 684 static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
725 const uint8_t *src, int size, int strip_start, int lines)
726 {
727 PutByteContext pb;
728 int c, line, pixels, code, ret;
729 684 const uint8_t *ssrc = src;
730 684 int width = ((s->width * s->bpp) + 7) >> 3;
731 684 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
732 1404 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
733
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684 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
734 desc->nb_components >= 3;
735 int is_dng;
736
737
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684 if (s->planar)
738 width /= s->bppcount;
739
740
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684 if (size <= 0)
741 return AVERROR_INVALIDDATA;
742
743
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684 if (is_yuv) {
744 int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
745 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
746 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
747 if (s->yuv_line == NULL) {
748 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
749 return AVERROR(ENOMEM);
750 }
751 dst = s->yuv_line;
752 stride = 0;
753
754 width = (s->width - 1) / s->subsampling[0] + 1;
755 width = width * s->subsampling[0] * s->subsampling[1] + 2*width;
756 av_assert0(width <= bytes_per_row);
757 av_assert0(s->bpp == 24);
758 }
759
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684 if (s->is_bayer) {
760 av_assert0(width == (s->bpp * s->width + 7) >> 3);
761 }
762
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684 if (p->format == AV_PIX_FMT_GRAY12) {
763 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width);
764 if (s->yuv_line == NULL) {
765 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
766 return AVERROR(ENOMEM);
767 }
768 dst = s->yuv_line;
769 stride = 0;
770 }
771
772
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684 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
773 #if CONFIG_ZLIB
774 return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines,
775 strip_start, is_yuv);
776 #else
777 av_log(s->avctx, AV_LOG_ERROR,
778 "zlib support not enabled, "
779 "deflate compression not supported\n");
780 return AVERROR(ENOSYS);
781 #endif
782 }
783
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684 if (s->compr == TIFF_LZMA) {
784 #if CONFIG_LZMA
785 return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines,
786 strip_start, is_yuv);
787 #else
788 av_log(s->avctx, AV_LOG_ERROR,
789 "LZMA support not enabled\n");
790 return AVERROR(ENOSYS);
791 #endif
792 }
793
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684 if (s->compr == TIFF_LZW) {
794 if (s->fill_order) {
795 if ((ret = deinvert_buffer(s, src, size)) < 0)
796 return ret;
797 ssrc = src = s->deinvert_buf;
798 }
799 if (size > 1 && !src[0] && (src[1]&1)) {
800 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
801 }
802 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
803 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
804 return ret;
805 }
806 for (line = 0; line < lines; line++) {
807 pixels = ff_lzw_decode(s->lzw, dst, width);
808 if (pixels < width) {
809 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
810 pixels, width);
811 return AVERROR_INVALIDDATA;
812 }
813 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
814 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
815 if (is_yuv) {
816 unpack_yuv(s, p, dst, strip_start + line);
817 line += s->subsampling[1] - 1;
818 } else if (p->format == AV_PIX_FMT_GRAY12) {
819 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
820 }
821 dst += stride;
822 }
823 return 0;
824 }
825
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684 if (s->compr == TIFF_CCITT_RLE ||
826
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684 s->compr == TIFF_G3 ||
827
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648 s->compr == TIFF_G4) {
828
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36 if (is_yuv || p->format == AV_PIX_FMT_GRAY12)
829 return AVERROR_INVALIDDATA;
830
831 36 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
832 }
833
834 648 bytestream2_init(&s->gb, src, size);
835
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648 bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines));
836
837
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648 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
838
839 /* Decode JPEG-encoded DNGs with strips */
840
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648 if (s->compr == TIFF_NEWJPEG && is_dng) {
841 if (s->strips > 1) {
842 av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n");
843 return AVERROR_PATCHWELCOME;
844 }
845 if ((ret = dng_decode_jpeg(s->avctx, p, s->stripsize, 0, 0, s->width, s->height)) < 0)
846 return ret;
847 return 0;
848 }
849
850
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648 if (is_dng && stride == 0)
851 return AVERROR_INVALIDDATA;
852
853
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5192 for (line = 0; line < lines; line++) {
854
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4544 if (src - ssrc > size) {
855 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
856 return AVERROR_INVALIDDATA;
857 }
858
859
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4544 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
860 break;
861 4544 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
862
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4544 switch (s->compr) {
863 224 case TIFF_RAW:
864
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224 if (ssrc + size - src < width)
865 return AVERROR_INVALIDDATA;
866
867
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224 if (!s->fill_order) {
868
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224 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
869 dst, 1, src, 0, width, 0);
870 } else {
871 int i;
872 for (i = 0; i < width; i++)
873 dst[i] = ff_reverse[src[i]];
874 }
875
876 /* Color processing for DNG images with uncompressed strips (non-tiled) */
877
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224 if (is_dng) {
878 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
879
880 is_u16 = (s->bpp / s->bppcount > 8);
881 pixel_size_bits = (is_u16 ? 16 : 8);
882 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
883
884 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
885 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
886 dng_blit(s,
887 dst,
888 0, // no stride, only 1 line
889 dst,
890 0, // no stride, only 1 line
891 elements,
892 1,
893 0, // single-component variation is only preset in JPEG-encoded DNGs
894 is_u16);
895 }
896
897 224 src += width;
898 224 break;
899 4320 case TIFF_PACKBITS:
900
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46342 for (pixels = 0; pixels < width;) {
901
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42022 if (ssrc + size - src < 2) {
902 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
903 return AVERROR_INVALIDDATA;
904 }
905
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42022 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
906
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42022 if (code >= 0) {
907 39523 code++;
908
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39523 if (pixels + code > width ||
909
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39523 ssrc + size - src < code) {
910 av_log(s->avctx, AV_LOG_ERROR,
911 "Copy went out of bounds\n");
912 return AVERROR_INVALIDDATA;
913 }
914 39523 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
915 dst, 1, src, 0, code, pixels);
916 39523 src += code;
917 39523 pixels += code;
918
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2499 } else if (code != -128) { // -127..-1
919 2499 code = (-code) + 1;
920
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2499 if (pixels + code > width) {
921 av_log(s->avctx, AV_LOG_ERROR,
922 "Run went out of bounds\n");
923 return AVERROR_INVALIDDATA;
924 }
925 2499 c = *src++;
926 2499 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
927 dst, 0, NULL, c, code, pixels);
928 2499 pixels += code;
929 }
930 }
931
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4320 if (s->fill_order) {
932 int i;
933 for (i = 0; i < width; i++)
934 dst[i] = ff_reverse[dst[i]];
935 }
936 4320 break;
937 }
938
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4544 if (is_yuv) {
939 unpack_yuv(s, p, dst, strip_start + line);
940 line += s->subsampling[1] - 1;
941
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4544 } else if (p->format == AV_PIX_FMT_GRAY12) {
942 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
943 }
944 4544 dst += stride;
945 }
946 648 return 0;
947 }
948
949 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame,
950 const AVPacket *avpkt)
951 {
952 TiffContext *s = avctx->priv_data;
953 int tile_idx;
954 int tile_offset_offset, tile_offset;
955 int tile_byte_count_offset, tile_byte_count;
956 int tile_count_x, tile_count_y;
957 int tile_width, tile_length;
958 int has_width_leftover, has_height_leftover;
959 int tile_x = 0, tile_y = 0;
960 int pos_x = 0, pos_y = 0;
961 int ret;
962
963 has_width_leftover = (s->width % s->tile_width != 0);
964 has_height_leftover = (s->height % s->tile_length != 0);
965
966 /* Calculate tile counts (round up) */
967 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
968 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
969
970 /* Iterate over the number of tiles */
971 for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) {
972 tile_x = tile_idx % tile_count_x;
973 tile_y = tile_idx / tile_count_x;
974
975 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
976 tile_width = s->width % s->tile_width;
977 else
978 tile_width = s->tile_width;
979
980 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
981 tile_length = s->height % s->tile_length;
982 else
983 tile_length = s->tile_length;
984
985 /* Read tile offset */
986 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
987 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
988 tile_offset = ff_tget_long(&s->gb, s->le);
989
990 /* Read tile byte size */
991 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
992 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
993 tile_byte_count = ff_tget_long(&s->gb, s->le);
994
995 /* Seek to tile data */
996 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
997
998 /* Decode JPEG tile and copy it in the reference frame */
999 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1000
1001 if (ret < 0)
1002 return ret;
1003
1004 /* Advance current positions */
1005 pos_x += tile_width;
1006 if (tile_x == tile_count_x - 1) { // If on the right edge
1007 pos_x = 0;
1008 pos_y += tile_length;
1009 }
1010 }
1011
1012 /* Frame is ready to be output */
1013 frame->pict_type = AV_PICTURE_TYPE_I;
1014 frame->key_frame = 1;
1015
1016 return avpkt->size;
1017 }
1018
1019 21 static int init_image(TiffContext *s, ThreadFrame *frame)
1020 {
1021 int ret;
1022 21 int create_gray_palette = 0;
1023
1024 // make sure there is no aliasing in the following switch
1025
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21 if (s->bpp >= 100 || s->bppcount >= 10) {
1026 av_log(s->avctx, AV_LOG_ERROR,
1027 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1028 s->bpp, s->bppcount);
1029 return AVERROR_INVALIDDATA;
1030 }
1031
1032
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21 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1033 4 case 11:
1034
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4 if (!s->palette_is_set) {
1035 4 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1036 4 break;
1037 }
1038 case 21:
1039 case 41:
1040 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1041 if (!s->palette_is_set) {
1042 create_gray_palette = 1;
1043 }
1044 break;
1045 case 81:
1046 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1047 break;
1048 case 121:
1049 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1050 break;
1051 case 10081:
1052 switch (AV_RL32(s->pattern)) {
1053 case 0x02010100:
1054 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1055 break;
1056 case 0x00010102:
1057 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1058 break;
1059 case 0x01000201:
1060 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1061 break;
1062 case 0x01020001:
1063 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1064 break;
1065 default:
1066 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1067 AV_RL32(s->pattern));
1068 return AVERROR_PATCHWELCOME;
1069 }
1070 break;
1071 case 10101:
1072 case 10121:
1073 case 10141:
1074 case 10161:
1075 switch (AV_RL32(s->pattern)) {
1076 case 0x02010100:
1077 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1078 break;
1079 case 0x00010102:
1080 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1081 break;
1082 case 0x01000201:
1083 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1084 break;
1085 case 0x01020001:
1086 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1087 break;
1088 default:
1089 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1090 AV_RL32(s->pattern));
1091 return AVERROR_PATCHWELCOME;
1092 }
1093 break;
1094 17 case 243:
1095
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17 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1096 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1097 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1098 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1099 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1100 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1101 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1102 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1103 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1104 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1105 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1106 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1107 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1108 } else {
1109 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1110 return AVERROR_PATCHWELCOME;
1111 }
1112 } else
1113 17 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1114 17 break;
1115 case 161:
1116 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1117 break;
1118 case 162:
1119 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1120 break;
1121 case 322:
1122 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1123 break;
1124 case 324:
1125 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1126 break;
1127 case 405:
1128 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1129 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1130 else {
1131 av_log(s->avctx, AV_LOG_ERROR,
1132 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1133 return AVERROR_PATCHWELCOME;
1134 }
1135 break;
1136 case 483:
1137 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1138 break;
1139 case 644:
1140 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1141 break;
1142 case 1243:
1143 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1144 break;
1145 case 1324:
1146 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1147 break;
1148 case 1483:
1149 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1150 break;
1151 case 1644:
1152 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1153 break;
1154 default:
1155 av_log(s->avctx, AV_LOG_ERROR,
1156 "This format is not supported (bpp=%d, bppcount=%d)\n",
1157 s->bpp, s->bppcount);
1158 return AVERROR_INVALIDDATA;
1159 }
1160
1161
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21 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1162 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1163 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1164 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1165 desc->nb_components < 3) {
1166 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1167 return AVERROR_INVALIDDATA;
1168 }
1169 }
1170
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21 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1172 5 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1173
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5 if (ret < 0)
1174 return ret;
1175 }
1176
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21 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1177 return ret;
1178
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21 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1179 if (!create_gray_palette)
1180 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
1181 else {
1182 /* make default grayscale pal */
1183 int i;
1184 uint32_t *pal = (uint32_t *)frame->f->data[1];
1185 for (i = 0; i < 1<<s->bpp; i++)
1186 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1187 }
1188 }
1189 21 return 0;
1190 }
1191
1192 42 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1193 {
1194
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42 int offset = tag == TIFF_YRES ? 2 : 0;
1195 42 s->res[offset++] = num;
1196 42 s->res[offset] = den;
1197
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42 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1198 33 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1199 33 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1200
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33 if (num > INT64_MAX || den > INT64_MAX) {
1201 num = num >> 1;
1202 den = den >> 1;
1203 }
1204 33 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1205 num, den, INT32_MAX);
1206
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33 if (!s->avctx->sample_aspect_ratio.den)
1207 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1208 }
1209 42 }
1210
1211 299 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1212 {
1213 AVFrameSideData *sd;
1214 GetByteContext gb_temp;
1215 299 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1216 int i, start;
1217 int pos;
1218 int ret;
1219 double *dp;
1220
1221 299 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1222
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299 if (ret < 0) {
1223 goto end;
1224 }
1225
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299 if (tag <= s->last_tag)
1226 return AVERROR_INVALIDDATA;
1227
1228 // We ignore TIFF_STRIP_SIZE as it is sometimes in the logic but wrong order around TIFF_STRIP_OFFS
1229
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299 if (tag != TIFF_STRIP_SIZE)
1230 278 s->last_tag = tag;
1231
1232 299 off = bytestream2_tell(&s->gb);
1233
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299 if (count == 1) {
1234
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230 switch (type) {
1235 188 case TIFF_BYTE:
1236 case TIFF_SHORT:
1237 case TIFF_LONG:
1238 188 value = ff_tget(&s->gb, type, s->le);
1239 188 break;
1240 42 case TIFF_RATIONAL:
1241 42 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1242 42 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1243
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42 if (!value2) {
1244 av_log(s->avctx, AV_LOG_ERROR, "Invalid denominator in rational\n");
1245 return AVERROR_INVALIDDATA;
1246 }
1247
1248 42 break;
1249 case TIFF_STRING:
1250 if (count <= 4) {
1251 break;
1252 }
1253 default:
1254 value = UINT_MAX;
1255 }
1256 }
1257
1258
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299 switch (tag) {
1259 15 case TIFF_SUBFILE:
1260 15 s->is_thumbnail = (value != 0);
1261 15 break;
1262 21 case TIFF_WIDTH:
1263 21 s->width = value;
1264 21 break;
1265 21 case TIFF_HEIGHT:
1266 21 s->height = value;
1267 21 break;
1268 21 case TIFF_BPP:
1269
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21 if (count > 5 || count <= 0) {
1270 av_log(s->avctx, AV_LOG_ERROR,
1271 "This format is not supported (bpp=%d, %d components)\n",
1272 value, count);
1273 return AVERROR_INVALIDDATA;
1274 }
1275 21 s->bppcount = count;
1276
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21 if (count == 1)
1277 4 s->bpp = value;
1278 else {
1279
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17 switch (type) {
1280 17 case TIFF_BYTE:
1281 case TIFF_SHORT:
1282 case TIFF_LONG:
1283 17 s->bpp = 0;
1284
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17 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1285 return AVERROR_INVALIDDATA;
1286
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68 for (i = 0; i < count; i++)
1287 51 s->bpp += ff_tget(&s->gb, type, s->le);
1288 17 break;
1289 default:
1290 s->bpp = -1;
1291 }
1292 }
1293 21 break;
1294 21 case TIFF_SAMPLES_PER_PIXEL:
1295
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21 if (count != 1) {
1296 av_log(s->avctx, AV_LOG_ERROR,
1297 "Samples per pixel requires a single value, many provided\n");
1298 return AVERROR_INVALIDDATA;
1299 }
1300
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21 if (value > 5 || value <= 0) {
1301 av_log(s->avctx, AV_LOG_ERROR,
1302 "Invalid samples per pixel %d\n", value);
1303 return AVERROR_INVALIDDATA;
1304 }
1305
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21 if (s->bppcount == 1)
1306 4 s->bpp *= value;
1307 21 s->bppcount = value;
1308 21 break;
1309 21 case TIFF_COMPR:
1310 21 s->compr = value;
1311 21 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1312 21 s->predictor = 0;
1313
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21 switch (s->compr) {
1314 17 case TIFF_RAW:
1315 case TIFF_PACKBITS:
1316 case TIFF_LZW:
1317 case TIFF_CCITT_RLE:
1318 17 break;
1319 4 case TIFF_G3:
1320 case TIFF_G4:
1321 4 s->fax_opts = 0;
1322 4 break;
1323 case TIFF_DEFLATE:
1324 case TIFF_ADOBE_DEFLATE:
1325 #if CONFIG_ZLIB
1326 break;
1327 #else
1328 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1329 return AVERROR(ENOSYS);
1330 #endif
1331 case TIFF_JPEG:
1332 case TIFF_NEWJPEG:
1333 s->is_jpeg = 1;
1334 break;
1335 case TIFF_LZMA:
1336 #if CONFIG_LZMA
1337 break;
1338 #else
1339 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1340 return AVERROR(ENOSYS);
1341 #endif
1342 default:
1343 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1344 s->compr);
1345 return AVERROR_INVALIDDATA;
1346 }
1347 21 break;
1348 21 case TIFF_ROWSPERSTRIP:
1349
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21 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1350 value = s->height;
1351 21 s->rps = FFMIN(value, s->height);
1352 21 break;
1353 21 case TIFF_STRIP_OFFS:
1354
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21 if (count == 1) {
1355
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2 if (value > INT_MAX) {
1356 av_log(s->avctx, AV_LOG_ERROR,
1357 "strippos %u too large\n", value);
1358 return AVERROR_INVALIDDATA;
1359 }
1360 2 s->strippos = 0;
1361 2 s->stripoff = value;
1362 } else
1363 19 s->strippos = off;
1364 21 s->strips = count;
1365
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21 if (s->strips == 1)
1366 2 s->rps = s->height;
1367 21 s->sot = type;
1368 21 break;
1369 21 case TIFF_STRIP_SIZE:
1370
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21 if (count == 1) {
1371
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2 if (value > INT_MAX) {
1372 av_log(s->avctx, AV_LOG_ERROR,
1373 "stripsize %u too large\n", value);
1374 return AVERROR_INVALIDDATA;
1375 }
1376 2 s->stripsizesoff = 0;
1377 2 s->stripsize = value;
1378 2 s->strips = 1;
1379 } else {
1380 19 s->stripsizesoff = off;
1381 }
1382 21 s->strips = count;
1383 21 s->sstype = type;
1384 21 break;
1385 42 case TIFF_XRES:
1386 case TIFF_YRES:
1387 42 set_sar(s, tag, value, value2);
1388 42 break;
1389 case TIFF_TILE_OFFSETS:
1390 s->tile_offsets_offset = off;
1391 s->tile_count = count;
1392 s->is_tiled = 1;
1393 break;
1394 case TIFF_TILE_BYTE_COUNTS:
1395 s->tile_byte_counts_offset = off;
1396 break;
1397 case TIFF_TILE_LENGTH:
1398 s->tile_length = value;
1399 break;
1400 case TIFF_TILE_WIDTH:
1401 s->tile_width = value;
1402 break;
1403 case TIFF_PREDICTOR:
1404 s->predictor = value;
1405 break;
1406 case TIFF_SUB_IFDS:
1407 if (count == 1)
1408 s->sub_ifd = value;
1409 else if (count > 1)
1410 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1411 break;
1412 case DNG_LINEARIZATION_TABLE:
1413 if (count > FF_ARRAY_ELEMS(s->dng_lut))
1414 return AVERROR_INVALIDDATA;
1415 for (int i = 0; i < count; i++)
1416 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1417 break;
1418 case DNG_BLACK_LEVEL:
1419 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1420 if (type == TIFF_RATIONAL) {
1421 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1422 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1423 if (!value2) {
1424 av_log(s->avctx, AV_LOG_ERROR, "Invalid black level denominator\n");
1425 return AVERROR_INVALIDDATA;
1426 }
1427
1428 s->black_level = value / value2;
1429 } else
1430 s->black_level = ff_tget(&s->gb, type, s->le);
1431 av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n");
1432 } else {
1433 s->black_level = value / value2;
1434 }
1435 break;
1436 case DNG_WHITE_LEVEL:
1437 s->white_level = value;
1438 break;
1439 case TIFF_CFA_PATTERN_DIM:
1440 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1441 ff_tget(&s->gb, type, s->le) != 2)) {
1442 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1443 return AVERROR_INVALIDDATA;
1444 }
1445 break;
1446 case TIFF_CFA_PATTERN:
1447 s->is_bayer = 1;
1448 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1449 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1450 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1451 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1452 break;
1453
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21 case TIFF_PHOTOMETRIC:
1454 switch (value) {
1455 21 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1456 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1457 case TIFF_PHOTOMETRIC_RGB:
1458 case TIFF_PHOTOMETRIC_PALETTE:
1459 case TIFF_PHOTOMETRIC_SEPARATED:
1460 case TIFF_PHOTOMETRIC_YCBCR:
1461 case TIFF_PHOTOMETRIC_CFA:
1462 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1463 21 s->photometric = value;
1464 21 break;
1465 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1466 case TIFF_PHOTOMETRIC_CIE_LAB:
1467 case TIFF_PHOTOMETRIC_ICC_LAB:
1468 case TIFF_PHOTOMETRIC_ITU_LAB:
1469 case TIFF_PHOTOMETRIC_LOG_L:
1470 case TIFF_PHOTOMETRIC_LOG_LUV:
1471 avpriv_report_missing_feature(s->avctx,
1472 "PhotometricInterpretation 0x%04X",
1473 value);
1474 return AVERROR_PATCHWELCOME;
1475 default:
1476 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1477 "unknown\n", value);
1478 return AVERROR_INVALIDDATA;
1479 }
1480 21 break;
1481 6 case TIFF_FILL_ORDER:
1482
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6 if (value < 1 || value > 2) {
1483 av_log(s->avctx, AV_LOG_ERROR,
1484 "Unknown FillOrder value %d, trying default one\n", value);
1485 value = 1;
1486 }
1487 6 s->fill_order = value - 1;
1488 6 break;
1489 case TIFF_PAL: {
1490 GetByteContext pal_gb[3];
1491 off = type_sizes[type];
1492 if (count / 3 > 256 ||
1493 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1494 return AVERROR_INVALIDDATA;
1495
1496 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1497 bytestream2_skip(&pal_gb[1], count / 3 * off);
1498 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1499
1500 off = (type_sizes[type] - 1) << 3;
1501 if (off > 31U) {
1502 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1503 return AVERROR_INVALIDDATA;
1504 }
1505
1506 for (i = 0; i < count / 3; i++) {
1507 uint32_t p = 0xFF000000;
1508 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1509 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1510 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1511 s->palette[i] = p;
1512 }
1513 s->palette_is_set = 1;
1514 break;
1515 }
1516 6 case TIFF_PLANAR:
1517 6 s->planar = value == 2;
1518 6 break;
1519 case TIFF_YCBCR_SUBSAMPLING:
1520 if (count != 2) {
1521 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1522 return AVERROR_INVALIDDATA;
1523 }
1524 for (i = 0; i < count; i++) {
1525 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1526 if (s->subsampling[i] <= 0) {
1527 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1528 s->subsampling[i] = 1;
1529 return AVERROR_INVALIDDATA;
1530 }
1531 }
1532 break;
1533 case TIFF_T4OPTIONS:
1534 if (s->compr == TIFF_G3)
1535 s->fax_opts = value;
1536 break;
1537 case TIFF_T6OPTIONS:
1538 if (s->compr == TIFF_G4)
1539 s->fax_opts = value;
1540 break;
1541 #define ADD_METADATA(count, name, sep)\
1542 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1543 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1544 goto end;\
1545 }
1546 case TIFF_MODEL_PIXEL_SCALE:
1547 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1548 break;
1549 case TIFF_MODEL_TRANSFORMATION:
1550 ADD_METADATA(count, "ModelTransformationTag", NULL);
1551 break;
1552 case TIFF_MODEL_TIEPOINT:
1553 ADD_METADATA(count, "ModelTiepointTag", NULL);
1554 break;
1555 case TIFF_GEO_KEY_DIRECTORY:
1556 if (s->geotag_count) {
1557 avpriv_request_sample(s->avctx, "Multiple geo key directories");
1558 return AVERROR_INVALIDDATA;
1559 }
1560 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1561 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1562 s->geotag_count = ff_tget_short(&s->gb, s->le);
1563 if (s->geotag_count > count / 4 - 1) {
1564 s->geotag_count = count / 4 - 1;
1565 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1566 }
1567 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1568 || s->geotag_count == 0) {
1569 s->geotag_count = 0;
1570 return -1;
1571 }
1572 s->geotags = av_calloc(s->geotag_count, sizeof(*s->geotags));
1573 if (!s->geotags) {
1574 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1575 s->geotag_count = 0;
1576 goto end;
1577 }
1578 for (i = 0; i < s->geotag_count; i++) {
1579 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1580 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1581 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1582
1583 if (!s->geotags[i].type)
1584 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
1585 else
1586 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
1587 }
1588 break;
1589 case TIFF_GEO_DOUBLE_PARAMS:
1590 if (count >= INT_MAX / sizeof(int64_t))
1591 return AVERROR_INVALIDDATA;
1592 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1593 return AVERROR_INVALIDDATA;
1594 dp = av_malloc_array(count, sizeof(double));
1595 if (!dp) {
1596 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1597 goto end;
1598 }
1599 for (i = 0; i < count; i++)
1600 dp[i] = ff_tget_double(&s->gb, s->le);
1601 for (i = 0; i < s->geotag_count; i++) {
1602 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
1603 if (s->geotags[i].count == 0
1604 || s->geotags[i].offset + s->geotags[i].count > count) {
1605 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1606 } else if (s->geotags[i].val) {
1607 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1608 } else {
1609 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1610 if (!ap) {
1611 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1612 av_freep(&dp);
1613 return AVERROR(ENOMEM);
1614 }
1615 s->geotags[i].val = ap;
1616 }
1617 }
1618 }
1619 av_freep(&dp);
1620 break;
1621 case TIFF_GEO_ASCII_PARAMS:
1622 pos = bytestream2_tell(&s->gb);
1623 for (i = 0; i < s->geotag_count; i++) {
1624 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1625 if (s->geotags[i].count == 0
1626 || s->geotags[i].offset + s->geotags[i].count > count) {
1627 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1628 } else {
1629 char *ap;
1630
1631 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1632 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1633 return AVERROR_INVALIDDATA;
1634 if (s->geotags[i].val)
1635 return AVERROR_INVALIDDATA;
1636 ap = av_malloc(s->geotags[i].count);
1637 if (!ap) {
1638 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1639 return AVERROR(ENOMEM);
1640 }
1641 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1642 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1643 s->geotags[i].val = ap;
1644 }
1645 }
1646 }
1647 break;
1648 case TIFF_ICC_PROFILE:
1649 gb_temp = s->gb;
1650 bytestream2_seek(&gb_temp, SEEK_SET, off);
1651
1652 if (bytestream2_get_bytes_left(&gb_temp) < count)
1653 return AVERROR_INVALIDDATA;
1654
1655 sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count);
1656 if (!sd)
1657 return AVERROR(ENOMEM);
1658
1659 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1660 break;
1661 case TIFF_ARTIST:
1662 ADD_METADATA(count, "artist", NULL);
1663 break;
1664 case TIFF_COPYRIGHT:
1665 ADD_METADATA(count, "copyright", NULL);
1666 break;
1667 case TIFF_DATE:
1668 ADD_METADATA(count, "date", NULL);
1669 break;
1670 6 case TIFF_DOCUMENT_NAME:
1671
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6 ADD_METADATA(count, "document_name", NULL);
1672 6 break;
1673 case TIFF_HOST_COMPUTER:
1674 ADD_METADATA(count, "computer", NULL);
1675 break;
1676 4 case TIFF_IMAGE_DESCRIPTION:
1677
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4 ADD_METADATA(count, "description", NULL);
1678 4 break;
1679 case TIFF_MAKE:
1680 ADD_METADATA(count, "make", NULL);
1681 break;
1682 case TIFF_MODEL:
1683 ADD_METADATA(count, "model", NULL);
1684 break;
1685 case TIFF_PAGE_NAME:
1686 ADD_METADATA(count, "page_name", NULL);
1687 break;
1688 2 case TIFF_PAGE_NUMBER:
1689
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2 ADD_METADATA(count, "page_number", " / ");
1690 // need to seek back to re-read the page number
1691 2 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1692 // read the page number
1693 2 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1694 // get back to where we were before the previous seek
1695 2 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1696 2 break;
1697 2 case TIFF_SOFTWARE_NAME:
1698
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2 ADD_METADATA(count, "software", NULL);
1699 2 break;
1700 case DNG_VERSION:
1701 if (count == 4) {
1702 unsigned int ver[4];
1703 ver[0] = ff_tget(&s->gb, type, s->le);
1704 ver[1] = ff_tget(&s->gb, type, s->le);
1705 ver[2] = ff_tget(&s->gb, type, s->le);
1706 ver[3] = ff_tget(&s->gb, type, s->le);
1707
1708 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1709 ver[0], ver[1], ver[2], ver[3]);
1710
1711 tiff_set_type(s, TIFF_TYPE_DNG);
1712 }
1713 break;
1714 case CINEMADNG_TIME_CODES:
1715 case CINEMADNG_FRAME_RATE:
1716 case CINEMADNG_T_STOP:
1717 case CINEMADNG_REEL_NAME:
1718 case CINEMADNG_CAMERA_LABEL:
1719 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1720 break;
1721 27 default:
1722
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27 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1723 av_log(s->avctx, AV_LOG_ERROR,
1724 "Unknown or unsupported tag %d/0x%0X\n",
1725 tag, tag);
1726 return AVERROR_INVALIDDATA;
1727 }
1728 }
1729 27 end:
1730
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299 if (s->bpp > 64U) {
1731 av_log(s->avctx, AV_LOG_ERROR,
1732 "This format is not supported (bpp=%d, %d components)\n",
1733 s->bpp, count);
1734 s->bpp = 0;
1735 return AVERROR_INVALIDDATA;
1736 }
1737 299 bytestream2_seek(&s->gb, start, SEEK_SET);
1738 299 return 0;
1739 }
1740
1741 21 static int decode_frame(AVCodecContext *avctx,
1742 void *data, int *got_frame, AVPacket *avpkt)
1743 {
1744 21 TiffContext *const s = avctx->priv_data;
1745 21 AVFrame *const p = data;
1746 21 ThreadFrame frame = { .f = data };
1747 unsigned off, last_off;
1748 int le, ret, plane, planes;
1749 int i, j, entries, stride;
1750 unsigned soff, ssize;
1751 uint8_t *dst;
1752 GetByteContext stripsizes;
1753 GetByteContext stripdata;
1754 int retry_for_subifd, retry_for_page;
1755 int is_dng;
1756 int has_tile_bits, has_strip_bits;
1757
1758 21 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1759
1760 // parse image header
1761
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21 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1762 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1763 return ret;
1764
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21 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1765 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1766 return AVERROR_INVALIDDATA;
1767 }
1768 21 s->le = le;
1769 // TIFF_BPP is not a required tag and defaults to 1
1770
1771 21 s->tiff_type = TIFF_TYPE_TIFF;
1772 21 again:
1773 21 s->is_thumbnail = 0;
1774 21 s->bppcount = s->bpp = 1;
1775 21 s->photometric = TIFF_PHOTOMETRIC_NONE;
1776 21 s->compr = TIFF_RAW;
1777 21 s->fill_order = 0;
1778 21 s->white_level = 0;
1779 21 s->is_bayer = 0;
1780 21 s->is_tiled = 0;
1781 21 s->is_jpeg = 0;
1782 21 s->cur_page = 0;
1783 21 s->last_tag = 0;
1784
1785
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1376277 for (i = 0; i < 65536; i++)
1786 1376256 s->dng_lut[i] = i;
1787
1788 21 free_geotags(s);
1789
1790 // Reset these offsets so we can tell if they were set this frame
1791 21 s->stripsizesoff = s->strippos = 0;
1792 /* parse image file directory */
1793 21 bytestream2_seek(&s->gb, off, SEEK_SET);
1794 21 entries = ff_tget_short(&s->gb, le);
1795
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21 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1796 return AVERROR_INVALIDDATA;
1797
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320 for (i = 0; i < entries; i++) {
1798
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299 if ((ret = tiff_decode_tag(s, p)) < 0)
1799 return ret;
1800 }
1801
1802
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21 if (s->get_thumbnail && !s->is_thumbnail) {
1803 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1804 return AVERROR_EOF;
1805 }
1806
1807 /** whether we should process this IFD's SubIFD */
1808
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21 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1809 /** whether we should process this multi-page IFD's next page */
1810
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21 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1811
1812 21 last_off = off;
1813
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21 if (retry_for_page) {
1814 // set offset to the next IFD
1815 off = ff_tget_long(&s->gb, le);
1816
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21 } else if (retry_for_subifd) {
1817 // set offset to the SubIFD
1818 off = s->sub_ifd;
1819 }
1820
1821
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21 if (retry_for_subifd || retry_for_page) {
1822 if (!off) {
1823 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1824 return AVERROR_INVALIDDATA;
1825 }
1826 if (off <= last_off) {
1827 avpriv_request_sample(s->avctx, "non increasing IFD offset");
1828 return AVERROR_INVALIDDATA;
1829 }
1830 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1831 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1832 return AVERROR_INVALIDDATA;
1833 }
1834 s->sub_ifd = 0;
1835 goto again;
1836 }
1837
1838 /* At this point we've decided on which (Sub)IFD to process */
1839
1840
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21 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1841
1842
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21 for (i = 0; i<s->geotag_count; i++) {
1843 const char *keyname = get_geokey_name(s->geotags[i].key);
1844 if (!keyname) {
1845 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1846 continue;
1847 }
1848 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1849 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1850 continue;
1851 }
1852 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1853 if (ret<0) {
1854 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1855 return ret;
1856 }
1857 }
1858
1859
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21 if (is_dng) {
1860 int bps;
1861
1862 if (s->bpp % s->bppcount)
1863 return AVERROR_INVALIDDATA;
1864 bps = s->bpp / s->bppcount;
1865 if (bps < 8 || bps > 32)
1866 return AVERROR_INVALIDDATA;
1867
1868 if (s->white_level == 0)
1869 s->white_level = (1LL << bps) - 1; /* Default value as per the spec */
1870
1871 if (s->white_level <= s->black_level) {
1872 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1873 s->black_level, s->white_level);
1874 return AVERROR_INVALIDDATA;
1875 }
1876
1877 if (s->planar)
1878 return AVERROR_PATCHWELCOME;
1879 }
1880
1881
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21 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1882 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1883 return AVERROR_INVALIDDATA;
1884 }
1885
1886
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21 has_tile_bits = s->is_tiled || s->tile_byte_counts_offset || s->tile_offsets_offset || s->tile_width || s->tile_length || s->tile_count;
1887
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21 has_strip_bits = s->strippos || s->strips || s->stripoff || s->rps || s->sot || s->sstype || s->stripsize || s->stripsizesoff;
1888
1889
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21 if (has_tile_bits && has_strip_bits) {
1890 int tiled_dng = s->is_tiled && is_dng;
1891 av_log(avctx, tiled_dng ? AV_LOG_WARNING : AV_LOG_ERROR, "Tiled TIFF is not allowed to strip\n");
1892 if (!tiled_dng)
1893 return AVERROR_INVALIDDATA;
1894 }
1895
1896 /* now we have the data and may start decoding */
1897
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21 if ((ret = init_image(s, &frame)) < 0)
1898 return ret;
1899
1900
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21 if (!s->is_tiled || has_strip_bits) {
1901
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21 if (s->strips == 1 && !s->stripsize) {
1902 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1903 s->stripsize = avpkt->size - s->stripoff;
1904 }
1905
1906
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21 if (s->stripsizesoff) {
1907
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19 if (s->stripsizesoff >= (unsigned)avpkt->size)
1908 return AVERROR_INVALIDDATA;
1909 19 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1910 19 avpkt->size - s->stripsizesoff);
1911 }
1912
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21 if (s->strippos) {
1913
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19 if (s->strippos >= (unsigned)avpkt->size)
1914 return AVERROR_INVALIDDATA;
1915 19 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1916 19 avpkt->size - s->strippos);
1917 }
1918
1919
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21 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1920 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1921 return AVERROR_INVALIDDATA;
1922 }
1923 }
1924
1925
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21 if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW ||
1926
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21 s->photometric == TIFF_PHOTOMETRIC_CFA) {
1927 p->color_trc = AVCOL_TRC_LINEAR;
1928
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21 } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) {
1929 p->color_trc = AVCOL_TRC_GAMMA22;
1930 }
1931
1932 /* Handle DNG images with JPEG-compressed tiles */
1933
1934
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21 if (is_dng && s->is_tiled) {
1935 if (!s->is_jpeg) {
1936 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1937 return AVERROR_PATCHWELCOME;
1938 } else if (!s->is_bayer) {
1939 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1940 return AVERROR_PATCHWELCOME;
1941 } else {
1942 if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0)
1943 *got_frame = 1;
1944 return ret;
1945 }
1946 }
1947
1948 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1949
1950
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21 planes = s->planar ? s->bppcount : 1;
1951
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42 for (plane = 0; plane < planes; plane++) {
1952 21 uint8_t *five_planes = NULL;
1953 21 int remaining = avpkt->size;
1954 int decoded_height;
1955 21 stride = p->linesize[plane];
1956 21 dst = p->data[plane];
1957
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21 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1958 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1959 stride = stride * 5 / 4;
1960 five_planes =
1961 dst = av_malloc(stride * s->height);
1962 if (!dst)
1963 return AVERROR(ENOMEM);
1964 }
1965
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705 for (i = 0; i < s->height; i += s->rps) {
1966
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684 if (i)
1967 663 dst += s->rps * stride;
1968
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684 if (s->stripsizesoff)
1969 682 ssize = ff_tget(&stripsizes, s->sstype, le);
1970 else
1971 2 ssize = s->stripsize;
1972
1973
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684 if (s->strippos)
1974 682 soff = ff_tget(&stripdata, s->sot, le);
1975 else
1976 2 soff = s->stripoff;
1977
1978
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684 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
1979 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1980 av_freep(&five_planes);
1981 return AVERROR_INVALIDDATA;
1982 }
1983 684 remaining -= ssize;
1984
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684 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
1985 684 FFMIN(s->rps, s->height - i))) < 0) {
1986 if (avctx->err_recognition & AV_EF_EXPLODE) {
1987 av_freep(&five_planes);
1988 return ret;
1989 }
1990 break;
1991 }
1992 }
1993 21 decoded_height = FFMIN(i, s->height);
1994
1995
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21 if (s->predictor == 2) {
1996 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1997 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
1998 return AVERROR_PATCHWELCOME;
1999 }
2000 dst = five_planes ? five_planes : p->data[plane];
2001 soff = s->bpp >> 3;
2002 if (s->planar)
2003 soff = FFMAX(soff / s->bppcount, 1);
2004 ssize = s->width * soff;
2005 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
2006 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
2007 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
2008 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2009 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2010 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2011 for (i = 0; i < decoded_height; i++) {
2012 for (j = soff; j < ssize; j += 2)
2013 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2014 dst += stride;
2015 }
2016 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2017 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2018 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2019 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2020 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2021 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2022 for (i = 0; i < decoded_height; i++) {
2023 for (j = soff; j < ssize; j += 2)
2024 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2025 dst += stride;
2026 }
2027 } else {
2028 for (i = 0; i < decoded_height; i++) {
2029 for (j = soff; j < ssize; j++)
2030 dst[j] += dst[j - soff];
2031 dst += stride;
2032 }
2033 }
2034 }
2035
2036
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21 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2037
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4 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2038 4 dst = p->data[plane];
2039
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12996 for (i = 0; i < s->height; i++) {
2040
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4170432 for (j = 0; j < stride; j++)
2041 4157440 dst[j] = c - dst[j];
2042 12992 dst += stride;
2043 }
2044 }
2045
2046
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21 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2047 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2048 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2049 uint8_t *src = five_planes ? five_planes : p->data[plane];
2050 dst = p->data[plane];
2051 for (i = 0; i < s->height; i++) {
2052 for (j = 0; j < s->width; j++) {
2053 int k = 255 - src[x * j + 3];
2054 int r = (255 - src[x * j ]) * k;
2055 int g = (255 - src[x * j + 1]) * k;
2056 int b = (255 - src[x * j + 2]) * k;
2057 dst[4 * j ] = r * 257 >> 16;
2058 dst[4 * j + 1] = g * 257 >> 16;
2059 dst[4 * j + 2] = b * 257 >> 16;
2060 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2061 }
2062 src += stride;
2063 dst += p->linesize[plane];
2064 }
2065 av_freep(&five_planes);
2066
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21 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2067 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2068 dst = p->data[plane];
2069 for (i = 0; i < s->height; i++) {
2070 for (j = 0; j < s->width; j++) {
2071 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2072 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2073 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2074 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2075 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2076 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2077 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2078 AV_WB16(dst + 8 * j + 6, 65535);
2079 }
2080 dst += p->linesize[plane];
2081 }
2082 }
2083 }
2084
2085
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21 if (s->planar && s->bppcount > 2) {
2086 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2087 FFSWAP(int, p->linesize[0], p->linesize[2]);
2088 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2089 FFSWAP(int, p->linesize[0], p->linesize[1]);
2090 }
2091
2092
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21 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2093 uint16_t *dst = (uint16_t *)p->data[0];
2094 for (i = 0; i < s->height; i++) {
2095 for (j = 0; j < s->width; j++)
2096 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2097 dst += stride / 2;
2098 }
2099 }
2100
2101 21 *got_frame = 1;
2102
2103 21 return avpkt->size;
2104 }
2105
2106 9 static av_cold int tiff_init(AVCodecContext *avctx)
2107 {
2108 9 TiffContext *s = avctx->priv_data;
2109 const AVCodec *codec;
2110 int ret;
2111
2112 9 s->width = 0;
2113 9 s->height = 0;
2114 9 s->subsampling[0] =
2115 9 s->subsampling[1] = 1;
2116 9 s->avctx = avctx;
2117 9 ff_lzw_decode_open(&s->lzw);
2118
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9 if (!s->lzw)
2119 return AVERROR(ENOMEM);
2120 9 ff_ccitt_unpack_init();
2121
2122 /* Allocate JPEG frame */
2123 9 s->jpgframe = av_frame_alloc();
2124 9 s->jpkt = av_packet_alloc();
2125
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9 if (!s->jpgframe || !s->jpkt)
2126 return AVERROR(ENOMEM);
2127
2128 /* Prepare everything needed for JPEG decoding */
2129 9 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2130
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9 if (!codec)
2131 return AVERROR_BUG;
2132 9 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2133
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9 if (!s->avctx_mjpeg)
2134 return AVERROR(ENOMEM);
2135 9 s->avctx_mjpeg->flags = avctx->flags;
2136 9 s->avctx_mjpeg->flags2 = avctx->flags2;
2137 9 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2138 9 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2139 9 s->avctx_mjpeg->max_pixels = avctx->max_pixels;
2140 9 ret = avcodec_open2(s->avctx_mjpeg, codec, NULL);
2141
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9 if (ret < 0) {
2142 return ret;
2143 }
2144
2145 9 return 0;
2146 }
2147
2148 9 static av_cold int tiff_end(AVCodecContext *avctx)
2149 {
2150 9 TiffContext *const s = avctx->priv_data;
2151
2152 9 free_geotags(s);
2153
2154 9 ff_lzw_decode_close(&s->lzw);
2155 9 av_freep(&s->deinvert_buf);
2156 9 s->deinvert_buf_size = 0;
2157 9 av_freep(&s->yuv_line);
2158 9 s->yuv_line_size = 0;
2159 9 av_frame_free(&s->jpgframe);
2160 9 av_packet_free(&s->jpkt);
2161 9 avcodec_free_context(&s->avctx_mjpeg);
2162 9 return 0;
2163 }
2164
2165 #define OFFSET(x) offsetof(TiffContext, x)
2166 static const AVOption tiff_options[] = {
2167 { "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 },
2168 { "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 },
2169 { "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 },
2170 { NULL },
2171 };
2172
2173 static const AVClass tiff_decoder_class = {
2174 .class_name = "TIFF decoder",
2175 .item_name = av_default_item_name,
2176 .option = tiff_options,
2177 .version = LIBAVUTIL_VERSION_INT,
2178 };
2179
2180 const AVCodec ff_tiff_decoder = {
2181 .name = "tiff",
2182 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2183 .type = AVMEDIA_TYPE_VIDEO,
2184 .id = AV_CODEC_ID_TIFF,
2185 .priv_data_size = sizeof(TiffContext),
2186 .init = tiff_init,
2187 .close = tiff_end,
2188 .decode = decode_frame,
2189 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2190 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
2191 .priv_class = &tiff_decoder_class,
2192 };
2193