FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/tiff.c
Date: 2024-07-14 13:34:57
Exec Total Coverage
Lines: 461 1529 30.2%
Functions: 14 31 45.2%
Branches: 298 1279 23.3%

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 <float.h>
37
38 #include "libavutil/attributes.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/error.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/mem.h"
43 #include "libavutil/opt.h"
44 #include "libavutil/reverse.h"
45 #include "avcodec.h"
46 #include "bytestream.h"
47 #include "codec_internal.h"
48 #include "decode.h"
49 #include "faxcompr.h"
50 #include "lzw.h"
51 #include "tiff.h"
52 #include "tiff_common.h"
53 #include "tiff_data.h"
54 #include "mjpegdec.h"
55 #include "thread.h"
56 #include "get_bits.h"
57
58 typedef struct TiffContext {
59 AVClass *class;
60 AVCodecContext *avctx;
61 GetByteContext gb;
62
63 /* JPEG decoding for DNG */
64 AVCodecContext *avctx_mjpeg; // wrapper context for MJPEG
65 AVPacket *jpkt; // encoded JPEG tile
66 AVFrame *jpgframe; // decoded JPEG tile
67
68 int get_subimage;
69 uint16_t get_page;
70 int get_thumbnail;
71
72 enum TiffType tiff_type;
73 int width, height;
74 unsigned int bpp, bppcount;
75 uint32_t palette[256];
76 int palette_is_set;
77 int le;
78 enum TiffCompr compr;
79 enum TiffPhotometric photometric;
80 int planar;
81 int subsampling[2];
82 int fax_opts;
83 int predictor;
84 int fill_order;
85 uint32_t res[4];
86 int is_thumbnail;
87 unsigned last_tag;
88
89 int is_bayer;
90 int use_color_matrix;
91 uint8_t pattern[4];
92
93 float analog_balance[4];
94 float as_shot_neutral[4];
95 float as_shot_white[4];
96 float color_matrix[3][4];
97 float camera_calibration[4][4];
98 float premultiply[4];
99 float black_level[4];
100
101 unsigned white_level;
102 uint16_t dng_lut[65536];
103
104 uint32_t sub_ifd;
105 uint16_t cur_page;
106
107 int strips, rps, sstype;
108 int sot;
109 int stripsizesoff, stripsize, stripoff, strippos;
110 LZWState *lzw;
111
112 /* Tile support */
113 int is_tiled;
114 int tile_byte_counts_offset, tile_offsets_offset;
115 int tile_width, tile_length;
116
117 int is_jpeg;
118
119 uint8_t *deinvert_buf;
120 int deinvert_buf_size;
121 uint8_t *yuv_line;
122 unsigned int yuv_line_size;
123
124 int geotag_count;
125 TiffGeoTag *geotags;
126 } TiffContext;
127
128 static const float d65_white[3] = { 0.950456f, 1.f, 1.088754f };
129
130 static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
131 if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
132 s->tiff_type = tiff_type;
133 }
134
135 54 static void free_geotags(TiffContext *const s)
136 {
137
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54 for (int i = 0; i < s->geotag_count; i++)
138 av_freep(&s->geotags[i].val);
139 54 av_freep(&s->geotags);
140 54 s->geotag_count = 0;
141 54 }
142
143 static const char *get_geokey_name(int key)
144 {
145 #define RET_GEOKEY_STR(TYPE, array)\
146 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
147 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_name_type_map))\
148 return tiff_##array##_name_type_string + tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].offset;
149
150 RET_GEOKEY_STR(VERT, vert);
151 RET_GEOKEY_STR(PROJ, proj);
152 RET_GEOKEY_STR(GEOG, geog);
153 RET_GEOKEY_STR(CONF, conf);
154
155 return NULL;
156 }
157
158 static int get_geokey_type(int key)
159 {
160 #define RET_GEOKEY_TYPE(TYPE, array)\
161 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
162 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_name_type_map))\
163 return tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].type;
164 RET_GEOKEY_TYPE(VERT, vert);
165 RET_GEOKEY_TYPE(PROJ, proj);
166 RET_GEOKEY_TYPE(GEOG, geog);
167 RET_GEOKEY_TYPE(CONF, conf);
168
169 return AVERROR_INVALIDDATA;
170 }
171
172 static int cmp_id_key(const void *id, const void *k)
173 {
174 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
175 }
176
177 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
178 {
179 const TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
180 if(r)
181 return r->name;
182
183 return NULL;
184 }
185
186 static const char *get_geokey_val(int key, uint16_t val)
187 {
188 if (val == TIFF_GEO_KEY_UNDEFINED)
189 return "undefined";
190 if (val == TIFF_GEO_KEY_USER_DEFINED)
191 return "User-Defined";
192
193 #define RET_GEOKEY_VAL(TYPE, array)\
194 if (val >= TIFF_##TYPE##_OFFSET &&\
195 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_codes))\
196 return tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET];
197
198 switch (key) {
199 case TIFF_GT_MODEL_TYPE_GEOKEY:
200 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
201 break;
202 case TIFF_GT_RASTER_TYPE_GEOKEY:
203 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
204 break;
205 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
206 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
207 case TIFF_VERTICAL_UNITS_GEOKEY:
208 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
209 break;
210 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
211 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
212 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
213 break;
214 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
215 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
216 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
217 break;
218 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
219 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
220 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
221 break;
222 case TIFF_GEOG_ELLIPSOID_GEOKEY:
223 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
224 break;
225 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
226 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
227 break;
228 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
229 return search_keyval(tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(tiff_proj_cs_type_codes), val);
230 case TIFF_PROJECTION_GEOKEY:
231 return search_keyval(tiff_projection_codes, FF_ARRAY_ELEMS(tiff_projection_codes), val);
232 case TIFF_PROJ_COORD_TRANS_GEOKEY:
233 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
234 break;
235 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
236 RET_GEOKEY_VAL(VERT_CS, vert_cs);
237 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
238 break;
239
240 }
241
242 return NULL;
243 }
244
245 static char *doubles2str(double *dp, int count, const char *sep)
246 {
247 int i;
248 char *ap, *ap0;
249 uint64_t component_len;
250 if (!sep) sep = ", ";
251 component_len = 24LL + strlen(sep);
252 if (count >= (INT_MAX - 1)/component_len)
253 return NULL;
254 ap = av_malloc(component_len * count + 1);
255 if (!ap)
256 return NULL;
257 ap0 = ap;
258 ap[0] = '\0';
259 for (i = 0; i < count; i++) {
260 unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep);
261 if(l >= component_len) {
262 av_free(ap0);
263 return NULL;
264 }
265 ap += l;
266 }
267 ap0[strlen(ap0) - strlen(sep)] = '\0';
268 return ap0;
269 }
270
271 26 static int add_metadata(int count, int type,
272 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
273 {
274
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26 switch(type) {
275 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, &frame->metadata);
276 12 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata);
277 14 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata);
278 default : return AVERROR_INVALIDDATA;
279 };
280 }
281
282 /**
283 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
284 */
285 static uint16_t av_always_inline dng_process_color16(uint16_t value,
286 const uint16_t *lut,
287 float black_level,
288 float scale_factor)
289 {
290 float value_norm;
291
292 // Lookup table lookup
293 value = lut[value];
294
295 // Black level subtraction
296 // Color scaling
297 value_norm = ((float)value - black_level) * scale_factor;
298
299 value = av_clip_uint16(lrintf(value_norm));
300
301 return value;
302 }
303
304 static uint16_t av_always_inline dng_process_color8(uint16_t value,
305 const uint16_t *lut,
306 float black_level,
307 float scale_factor)
308 {
309 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
310 }
311
312 static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
313 const uint8_t *src, int src_stride, int width, int height,
314 int is_single_comp, int is_u16, int odd_line)
315 {
316 float scale_factor[4];
317 int line, col;
318
319 if (s->is_bayer) {
320 for (int i = 0; i < 4; i++)
321 scale_factor[i] = s->premultiply[s->pattern[i]] * 65535.f / (s->white_level - s->black_level[i]);
322 } else {
323 for (int i = 0; i < 4; i++)
324 scale_factor[i] = s->premultiply[ i ] * 65535.f / (s->white_level - s->black_level[i]);
325 }
326
327 if (is_single_comp) {
328 if (!is_u16)
329 return; /* <= 8bpp unsupported */
330
331 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
332 (split vertically in the middle). */
333 for (line = 0; line < height / 2; line++) {
334 uint16_t *dst_u16 = (uint16_t *)dst;
335 const uint16_t *src_u16 = (const uint16_t *)src;
336
337 /* Blit first half of input row row to initial row of output */
338 for (col = 0; col < width; col++)
339 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level[col&1], scale_factor[col&1]);
340
341 /* Advance the destination pointer by a row (source pointer remains in the same place) */
342 dst += dst_stride * sizeof(uint16_t);
343 dst_u16 = (uint16_t *)dst;
344
345 /* Blit second half of input row row to next row of output */
346 for (col = 0; col < width; col++)
347 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level[(col&1) + 2], scale_factor[(col&1) + 2]);
348
349 dst += dst_stride * sizeof(uint16_t);
350 src += src_stride * sizeof(uint16_t);
351 }
352 } else {
353 /* Input and output image are the same size and the MJpeg decoder has done per-component
354 deinterleaving, so blitting here is straightforward. */
355 if (is_u16) {
356 for (line = 0; line < height; line++) {
357 uint16_t *dst_u16 = (uint16_t *)dst;
358 const uint16_t *src_u16 = (const uint16_t *)src;
359
360 for (col = 0; col < width; col++)
361 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut,
362 s->black_level[(col&1) + 2 * ((line&1) + odd_line)],
363 scale_factor[(col&1) + 2 * ((line&1) + odd_line)]);
364
365 dst += dst_stride * sizeof(uint16_t);
366 src += src_stride * sizeof(uint16_t);
367 }
368 } else {
369 for (line = 0; line < height; line++) {
370 uint8_t *dst_u8 = dst;
371 const uint8_t *src_u8 = src;
372
373 for (col = 0; col < width; col++)
374 *dst_u8++ = dng_process_color8(*src_u8++, s->dng_lut,
375 s->black_level[(col&1) + 2 * ((line&1) + odd_line)],
376 scale_factor[(col&1) + 2 * ((line&1) + odd_line)]);
377
378 dst += dst_stride;
379 src += src_stride;
380 }
381 }
382 }
383 }
384
385 36484 static void av_always_inline horizontal_fill(TiffContext *s,
386 unsigned int bpp, uint8_t* dst,
387 int usePtr, const uint8_t *src,
388 uint8_t c, int width, int offset)
389 {
390
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36484 switch (bpp) {
391 case 1:
392 while (--width >= 0) {
393 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
394 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
395 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
396 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
397 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
398 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
399 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
400 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
401 }
402 break;
403 case 2:
404 while (--width >= 0) {
405 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
406 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
407 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
408 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
409 }
410 break;
411 case 4:
412 while (--width >= 0) {
413 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
414 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
415 }
416 break;
417 case 10:
418 case 12:
419 case 14: {
420 uint16_t *dst16 = (uint16_t *)dst;
421 int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
422 uint8_t shift = is_dng ? 0 : 16 - bpp;
423 GetBitContext gb;
424
425 av_unused int ret = init_get_bits8(&gb, src, width);
426 av_assert1(ret >= 0);
427 for (int i = 0; i < s->width; i++) {
428 dst16[i] = get_bits(&gb, bpp) << shift;
429 }
430 }
431 break;
432 36484 default:
433
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36484 if (usePtr) {
434 34369 memcpy(dst + offset, src, width);
435 } else {
436 2115 memset(dst + offset, c, width);
437 }
438 }
439 36484 }
440
441 18 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
442 {
443 int i;
444
445 18 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
446
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18 if (!s->deinvert_buf)
447 return AVERROR(ENOMEM);
448
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251137 for (i = 0; i < size; i++)
449 251119 s->deinvert_buf[i] = ff_reverse[src[i]];
450
451 18 return 0;
452 }
453
454 static void unpack_gray(TiffContext *s, AVFrame *p,
455 const uint8_t *src, int lnum, int width, int bpp)
456 {
457 GetBitContext gb;
458 uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]);
459
460 av_unused int ret = init_get_bits8(&gb, src, width);
461 av_assert1(ret >= 0);
462
463 for (int i = 0; i < s->width; i++) {
464 dst[i] = get_bits(&gb, bpp);
465 }
466 }
467
468 static void unpack_yuv(TiffContext *s, AVFrame *p,
469 const uint8_t *src, int lnum)
470 {
471 int i, j, k;
472 int w = (s->width - 1) / s->subsampling[0] + 1;
473 uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
474 uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
475 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
476 for (i = 0; i < w; i++) {
477 for (j = 0; j < s->subsampling[1]; j++)
478 for (k = 0; k < s->subsampling[0]; k++)
479 p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
480 FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++;
481 *pu++ = *src++;
482 *pv++ = *src++;
483 }
484 }else{
485 for (i = 0; i < w; i++) {
486 for (j = 0; j < s->subsampling[1]; j++)
487 for (k = 0; k < s->subsampling[0]; k++)
488 p->data[0][(lnum + j) * p->linesize[0] +
489 i * s->subsampling[0] + k] = *src++;
490 *pu++ = *src++;
491 *pv++ = *src++;
492 }
493 }
494 }
495
496 #if CONFIG_ZLIB
497 2 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
498 int size)
499 {
500 2 z_stream zstream = { 0 };
501 int zret;
502
503 2 zstream.next_in = src;
504 2 zstream.avail_in = size;
505 2 zstream.next_out = dst;
506 2 zstream.avail_out = *len;
507 2 zret = inflateInit(&zstream);
508
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2 if (zret != Z_OK) {
509 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
510 return zret;
511 }
512 2 zret = inflate(&zstream, Z_SYNC_FLUSH);
513 2 inflateEnd(&zstream);
514 2 *len = zstream.total_out;
515
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2 return zret == Z_STREAM_END ? Z_OK : zret;
516 }
517
518 2 static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
519 const uint8_t *src, int size, int width, int lines,
520 int strip_start, int is_yuv)
521 {
522 uint8_t *zbuf;
523 unsigned long outlen;
524 int ret, line;
525 2 outlen = width * lines;
526 2 zbuf = av_malloc(outlen);
527
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2 if (!zbuf)
528 return AVERROR(ENOMEM);
529
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2 if (s->fill_order) {
530 if ((ret = deinvert_buffer(s, src, size)) < 0) {
531 av_free(zbuf);
532 return ret;
533 }
534 src = s->deinvert_buf;
535 }
536 2 ret = tiff_uncompress(zbuf, &outlen, src, size);
537
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2 if (ret != Z_OK) {
538 av_log(s->avctx, AV_LOG_ERROR,
539 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
540 (unsigned long)width * lines, ret);
541 av_free(zbuf);
542 return AVERROR_UNKNOWN;
543 }
544 2 src = zbuf;
545
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18 for (line = 0; line < lines; line++) {
546
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16 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
547 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
548 } else {
549 16 memcpy(dst, src, width);
550 }
551
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16 if (is_yuv) {
552 unpack_yuv(s, p, dst, strip_start + line);
553 line += s->subsampling[1] - 1;
554 }
555 16 dst += stride;
556 16 src += width;
557 }
558 2 av_free(zbuf);
559 2 return 0;
560 }
561 #endif
562
563 #if CONFIG_LZMA
564 static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src,
565 int size)
566 {
567 lzma_stream stream = LZMA_STREAM_INIT;
568 lzma_ret ret;
569
570 stream.next_in = src;
571 stream.avail_in = size;
572 stream.next_out = dst;
573 stream.avail_out = *len;
574 ret = lzma_stream_decoder(&stream, UINT64_MAX, 0);
575 if (ret != LZMA_OK) {
576 av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret);
577 return ret;
578 }
579 ret = lzma_code(&stream, LZMA_RUN);
580 lzma_end(&stream);
581 *len = stream.total_out;
582 return ret == LZMA_STREAM_END ? LZMA_OK : ret;
583 }
584
585 static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
586 const uint8_t *src, int size, int width, int lines,
587 int strip_start, int is_yuv)
588 {
589 uint64_t outlen = width * (uint64_t)lines;
590 int ret, line;
591 uint8_t *buf = av_malloc(outlen);
592 if (!buf)
593 return AVERROR(ENOMEM);
594 if (s->fill_order) {
595 if ((ret = deinvert_buffer(s, src, size)) < 0) {
596 av_free(buf);
597 return ret;
598 }
599 src = s->deinvert_buf;
600 }
601 ret = tiff_uncompress_lzma(buf, &outlen, src, size);
602 if (ret != LZMA_OK) {
603 av_log(s->avctx, AV_LOG_ERROR,
604 "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen,
605 (uint64_t)width * lines, ret);
606 av_free(buf);
607 return AVERROR_UNKNOWN;
608 }
609 src = buf;
610 for (line = 0; line < lines; line++) {
611 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
612 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
613 } else {
614 memcpy(dst, src, width);
615 }
616 if (is_yuv) {
617 unpack_yuv(s, p, dst, strip_start + line);
618 line += s->subsampling[1] - 1;
619 }
620 dst += stride;
621 src += width;
622 }
623 av_free(buf);
624 return 0;
625 }
626 #endif
627
628 18 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
629 const uint8_t *src, int size, int width, int lines)
630 {
631 int line;
632 int ret;
633
634
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18 if (s->fill_order) {
635
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18 if ((ret = deinvert_buffer(s, src, size)) < 0)
636 return ret;
637 18 src = s->deinvert_buf;
638 }
639 18 ret = ff_ccitt_unpack(s->avctx, src, size, dst, lines, stride,
640 s->compr, s->fax_opts);
641
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18 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
642 for (line = 0; line < lines; line++) {
643 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
644 dst += stride;
645 }
646 18 return ret;
647 }
648
649 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
650 int tile_byte_count, int dst_x, int dst_y, int w, int h)
651 {
652 TiffContext *s = avctx->priv_data;
653 uint8_t *dst_data, *src_data;
654 uint32_t dst_offset; /* offset from dst buffer in pixels */
655 int is_single_comp, is_u16, pixel_size;
656 int ret;
657
658 if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb))
659 return AVERROR_INVALIDDATA;
660
661 /* Prepare a packet and send to the MJPEG decoder */
662 av_packet_unref(s->jpkt);
663 s->jpkt->data = (uint8_t*)s->gb.buffer;
664 s->jpkt->size = tile_byte_count;
665
666 if (s->is_bayer) {
667 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
668 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
669 image or not from its own data (and we need that information when decoding it). */
670 mjpegdecctx->bayer = 1;
671 }
672
673 ret = avcodec_send_packet(s->avctx_mjpeg, s->jpkt);
674 if (ret < 0) {
675 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
676 return ret;
677 }
678
679 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
680 if (ret < 0) {
681 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
682
683 /* Normally skip, error if explode */
684 if (avctx->err_recognition & AV_EF_EXPLODE)
685 return AVERROR_INVALIDDATA;
686 else
687 return 0;
688 }
689
690 is_u16 = (s->bpp > 8);
691
692 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
693
694 if (s->jpgframe->width != s->avctx_mjpeg->width ||
695 s->jpgframe->height != s->avctx_mjpeg->height ||
696 s->jpgframe->format != s->avctx_mjpeg->pix_fmt)
697 return AVERROR_INVALIDDATA;
698
699 /* See dng_blit for explanation */
700 if (s->avctx_mjpeg->width == w * 2 &&
701 s->avctx_mjpeg->height == h / 2 &&
702 s->avctx_mjpeg->pix_fmt == AV_PIX_FMT_GRAY16LE) {
703 is_single_comp = 1;
704 } else if (s->avctx_mjpeg->width >= w &&
705 s->avctx_mjpeg->height >= h &&
706 s->avctx_mjpeg->pix_fmt == (is_u16 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8)
707 ) {
708 is_single_comp = 0;
709 } else
710 return AVERROR_INVALIDDATA;
711
712 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
713
714 if (is_single_comp && !is_u16) {
715 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
716 av_frame_unref(s->jpgframe);
717 return AVERROR_PATCHWELCOME;
718 }
719
720 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
721 dst_data = frame->data[0] + dst_offset * pixel_size;
722 src_data = s->jpgframe->data[0];
723
724 dng_blit(s,
725 dst_data,
726 frame->linesize[0] / pixel_size,
727 src_data,
728 s->jpgframe->linesize[0] / pixel_size,
729 w,
730 h,
731 is_single_comp,
732 is_u16, 0);
733
734 av_frame_unref(s->jpgframe);
735
736 return 0;
737 }
738
739 579 static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
740 const uint8_t *src, int size, int strip_start, int lines)
741 {
742 PutByteContext pb;
743 int c, line, pixels, code, ret;
744 579 const uint8_t *ssrc = src;
745 579 int width = ((s->width * s->bpp) + 7) >> 3;
746 579 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
747 1176 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
748
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579 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
749 desc->nb_components >= 3;
750 int is_dng;
751
752
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579 if (s->planar)
753 width /= s->bppcount;
754
755
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579 if (size <= 0)
756 return AVERROR_INVALIDDATA;
757
758
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579 if (is_yuv) {
759 int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
760 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
761 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
762 if (s->yuv_line == NULL) {
763 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
764 return AVERROR(ENOMEM);
765 }
766 dst = s->yuv_line;
767 stride = 0;
768
769 width = (s->width - 1) / s->subsampling[0] + 1;
770 width = width * s->subsampling[0] * s->subsampling[1] + 2*width;
771 av_assert0(width <= bytes_per_row);
772 av_assert0(s->bpp == 24);
773 }
774
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579 if (s->is_bayer) {
775 av_assert0(width == (s->bpp * s->width + 7) >> 3);
776 }
777
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579 av_assert0(!(s->is_bayer && is_yuv));
778
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579 if (p->format == AV_PIX_FMT_GRAY12) {
779 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width);
780 if (s->yuv_line == NULL) {
781 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
782 return AVERROR(ENOMEM);
783 }
784 dst = s->yuv_line;
785 stride = 0;
786 }
787
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579 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
789 #if CONFIG_ZLIB
790 2 return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines,
791 strip_start, is_yuv);
792 #else
793 av_log(s->avctx, AV_LOG_ERROR,
794 "zlib support not enabled, "
795 "deflate compression not supported\n");
796 return AVERROR(ENOSYS);
797 #endif
798 }
799
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577 if (s->compr == TIFF_LZMA) {
800 #if CONFIG_LZMA
801 return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines,
802 strip_start, is_yuv);
803 #else
804 av_log(s->avctx, AV_LOG_ERROR,
805 "LZMA support not enabled\n");
806 return AVERROR(ENOSYS);
807 #endif
808 }
809
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577 if (s->compr == TIFF_LZW) {
810
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2 if (s->fill_order) {
811 if ((ret = deinvert_buffer(s, src, size)) < 0)
812 return ret;
813 ssrc = src = s->deinvert_buf;
814 }
815
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2 if (size > 1 && !src[0] && (src[1]&1)) {
816 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
817 }
818
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2 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
819 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
820 return ret;
821 }
822
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18 for (line = 0; line < lines; line++) {
823 16 pixels = ff_lzw_decode(s->lzw, dst, width);
824
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16 if (pixels < width) {
825 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
826 pixels, width);
827 return AVERROR_INVALIDDATA;
828 }
829
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16 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
830 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
831
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16 if (is_yuv) {
832 unpack_yuv(s, p, dst, strip_start + line);
833 line += s->subsampling[1] - 1;
834
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16 } else if (p->format == AV_PIX_FMT_GRAY12) {
835 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
836 }
837 16 dst += stride;
838 }
839 2 return 0;
840 }
841
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575 if (s->compr == TIFF_CCITT_RLE ||
842
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575 s->compr == TIFF_G3 ||
843
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557 s->compr == TIFF_G4) {
844
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18 if (is_yuv || p->format == AV_PIX_FMT_GRAY12)
845 return AVERROR_INVALIDDATA;
846
847 18 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
848 }
849
850 557 bytestream2_init(&s->gb, src, size);
851
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557 bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines));
852
853
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557 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
854
855 /* Decode JPEG-encoded DNGs with strips */
856
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557 if (s->compr == TIFF_NEWJPEG && is_dng) {
857 if (s->strips > 1) {
858 av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n");
859 return AVERROR_PATCHWELCOME;
860 }
861 if (!s->is_bayer)
862 return AVERROR_PATCHWELCOME;
863 if ((ret = dng_decode_jpeg(s->avctx, p, s->stripsize, 0, 0, s->width, s->height)) < 0)
864 return ret;
865 return 0;
866 }
867
868
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557 if (is_dng && stride == 0)
869 return AVERROR_INVALIDDATA;
870
871
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4429 for (line = 0; line < lines; line++) {
872
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3872 if (src - ssrc > size) {
873 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
874 return AVERROR_INVALIDDATA;
875 }
876
877
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3872 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
878 break;
879 3872 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
880
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3872 switch (s->compr) {
881 128 case TIFF_RAW:
882
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128 if (ssrc + size - src < width)
883 return AVERROR_INVALIDDATA;
884
885
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128 if (!s->fill_order) {
886
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128 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
887 dst, 1, src, 0, width, 0);
888 } else {
889 int i;
890 for (i = 0; i < width; i++)
891 dst[i] = ff_reverse[src[i]];
892 }
893
894 /* Color processing for DNG images with uncompressed strips (non-tiled) */
895
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128 if (is_dng) {
896 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
897
898 is_u16 = (s->bpp / s->bppcount > 8);
899 pixel_size_bits = (is_u16 ? 16 : 8);
900 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
901
902 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
903 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
904 dng_blit(s,
905 dst,
906 0, // no stride, only 1 line
907 dst,
908 0, // no stride, only 1 line
909 elements,
910 1,
911 0, // single-component variation is only preset in JPEG-encoded DNGs
912 is_u16,
913 (line + strip_start)&1);
914 }
915
916 128 src += width;
917 128 break;
918 3744 case TIFF_PACKBITS:
919
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40100 for (pixels = 0; pixels < width;) {
920
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36356 if (ssrc + size - src < 2) {
921 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
922 return AVERROR_INVALIDDATA;
923 }
924
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36356 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
925
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36356 if (code >= 0) {
926 34241 code++;
927
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34241 if (pixels + code > width ||
928
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34241 ssrc + size - src < code) {
929 av_log(s->avctx, AV_LOG_ERROR,
930 "Copy went out of bounds\n");
931 return AVERROR_INVALIDDATA;
932 }
933 34241 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
934 dst, 1, src, 0, code, pixels);
935 34241 src += code;
936 34241 pixels += code;
937
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2115 } else if (code != -128) { // -127..-1
938 2115 code = (-code) + 1;
939
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2115 if (pixels + code > width) {
940 av_log(s->avctx, AV_LOG_ERROR,
941 "Run went out of bounds\n");
942 return AVERROR_INVALIDDATA;
943 }
944 2115 c = *src++;
945 2115 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
946 dst, 0, NULL, c, code, pixels);
947 2115 pixels += code;
948 }
949 }
950
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3744 if (s->fill_order) {
951 int i;
952 for (i = 0; i < width; i++)
953 dst[i] = ff_reverse[dst[i]];
954 }
955 3744 break;
956 }
957
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3872 if (is_yuv) {
958 unpack_yuv(s, p, dst, strip_start + line);
959 line += s->subsampling[1] - 1;
960
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3872 } else if (p->format == AV_PIX_FMT_GRAY12) {
961 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
962 }
963 3872 dst += stride;
964 }
965 557 return 0;
966 }
967
968 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame,
969 const AVPacket *avpkt)
970 {
971 TiffContext *s = avctx->priv_data;
972 int tile_idx;
973 int tile_offset_offset, tile_offset;
974 int tile_byte_count_offset, tile_byte_count;
975 int tile_count_x, tile_count_y;
976 int tile_width, tile_length;
977 int has_width_leftover, has_height_leftover;
978 int tile_x = 0, tile_y = 0;
979 int pos_x = 0, pos_y = 0;
980 int ret;
981
982 if (s->tile_width <= 0 || s->tile_length <= 0)
983 return AVERROR_INVALIDDATA;
984
985 has_width_leftover = (s->width % s->tile_width != 0);
986 has_height_leftover = (s->height % s->tile_length != 0);
987
988 /* Calculate tile counts (round up) */
989 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
990 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
991
992 /* Iterate over the number of tiles */
993 for (tile_idx = 0; tile_idx < tile_count_x * tile_count_y; tile_idx++) {
994 tile_x = tile_idx % tile_count_x;
995 tile_y = tile_idx / tile_count_x;
996
997 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
998 tile_width = s->width % s->tile_width;
999 else
1000 tile_width = s->tile_width;
1001
1002 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
1003 tile_length = s->height % s->tile_length;
1004 else
1005 tile_length = s->tile_length;
1006
1007 /* Read tile offset */
1008 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
1009 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
1010 tile_offset = ff_tget_long(&s->gb, s->le);
1011
1012 /* Read tile byte size */
1013 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
1014 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
1015 tile_byte_count = ff_tget_long(&s->gb, s->le);
1016
1017 /* Seek to tile data */
1018 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
1019
1020 /* Decode JPEG tile and copy it in the reference frame */
1021 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1022
1023 if (ret < 0)
1024 return ret;
1025
1026 /* Advance current positions */
1027 pos_x += tile_width;
1028 if (tile_x == tile_count_x - 1) { // If on the right edge
1029 pos_x = 0;
1030 pos_y += tile_length;
1031 }
1032 }
1033
1034 /* Frame is ready to be output */
1035 frame->pict_type = AV_PICTURE_TYPE_I;
1036 frame->flags |= AV_FRAME_FLAG_KEY;
1037
1038 return avpkt->size;
1039 }
1040
1041 33 static int init_image(TiffContext *s, AVFrame *frame)
1042 {
1043 int ret;
1044 33 int create_gray_palette = 0;
1045
1046 // make sure there is no aliasing in the following switch
1047
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33 if (s->bpp > 128 || s->bppcount >= 10) {
1048 av_log(s->avctx, AV_LOG_ERROR,
1049 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1050 s->bpp, s->bppcount);
1051 return AVERROR_INVALIDDATA;
1052 }
1053
1054
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33 switch (s->planar * 10000 + s->bpp * 10 + s->bppcount + s->is_bayer * 100000) {
1055 4 case 11:
1056
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4 if (!s->palette_is_set) {
1057 4 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1058 4 break;
1059 }
1060 case 21:
1061 case 41:
1062 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1063 if (!s->palette_is_set) {
1064 create_gray_palette = 1;
1065 }
1066 break;
1067 case 81:
1068 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1069 break;
1070 case 121:
1071 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1072 break;
1073 case 100081:
1074 switch (AV_RL32(s->pattern)) {
1075 case 0x02010100:
1076 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1077 break;
1078 case 0x00010102:
1079 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1080 break;
1081 case 0x01000201:
1082 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1083 break;
1084 case 0x01020001:
1085 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1086 break;
1087 default:
1088 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1089 AV_RL32(s->pattern));
1090 return AVERROR_PATCHWELCOME;
1091 }
1092 break;
1093 case 100101:
1094 case 100121:
1095 case 100141:
1096 case 100161:
1097 switch (AV_RL32(s->pattern)) {
1098 case 0x02010100:
1099 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1100 break;
1101 case 0x00010102:
1102 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1103 break;
1104 case 0x01000201:
1105 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1106 break;
1107 case 0x01020001:
1108 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1109 break;
1110 default:
1111 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1112 AV_RL32(s->pattern));
1113 return AVERROR_PATCHWELCOME;
1114 }
1115 break;
1116 17 case 243:
1117
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17 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1118 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1119 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1120 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1121 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1122 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1123 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1124 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1125 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1126 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1127 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1128 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1129 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1130 } else {
1131 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1132 return AVERROR_PATCHWELCOME;
1133 }
1134 } else
1135 17 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1136 17 break;
1137 case 161:
1138 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1139 break;
1140 case 162:
1141 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1142 break;
1143 case 322:
1144 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1145 break;
1146 case 324:
1147 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1148 break;
1149 case 405:
1150 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1151 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1152 else {
1153 av_log(s->avctx, AV_LOG_ERROR,
1154 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1155 return AVERROR_PATCHWELCOME;
1156 }
1157 break;
1158 case 483:
1159 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1160 break;
1161 case 644:
1162 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1163 break;
1164 case 10243:
1165 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1166 break;
1167 case 10324:
1168 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1169 break;
1170 case 10483:
1171 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1172 break;
1173 case 10644:
1174 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1175 break;
1176 6 case 963:
1177
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6 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBF32LE : AV_PIX_FMT_RGBF32BE;
1178 6 break;
1179 6 case 1284:
1180
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6 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBAF32LE : AV_PIX_FMT_RGBAF32BE;
1181 6 break;
1182 case 10963:
1183 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRPF32LE : AV_PIX_FMT_GBRPF32BE;
1184 break;
1185 case 11284:
1186 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAPF32LE : AV_PIX_FMT_GBRAPF32BE;
1187 break;
1188 default:
1189 av_log(s->avctx, AV_LOG_ERROR,
1190 "This format is not supported (bpp=%d, bppcount=%d)\n",
1191 s->bpp, s->bppcount);
1192 return AVERROR_INVALIDDATA;
1193 }
1194
1195
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33 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1196 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1197 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1198 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1199 desc->nb_components < 3) {
1200 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1201 return AVERROR_INVALIDDATA;
1202 }
1203 }
1204
1205
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33 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1206 11 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1207
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11 if (ret < 0)
1208 return ret;
1209 }
1210
1211
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33 if (s->avctx->skip_frame >= AVDISCARD_ALL)
1212 11 return 0;
1213
1214
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22 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1215 return ret;
1216
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22 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1217 if (!create_gray_palette)
1218 memcpy(frame->data[1], s->palette, sizeof(s->palette));
1219 else {
1220 /* make default grayscale pal */
1221 int i;
1222 uint32_t *pal = (uint32_t *)frame->data[1];
1223 for (i = 0; i < 1<<s->bpp; i++)
1224 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1225 }
1226 }
1227 22 return 1;
1228 }
1229
1230 42 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1231 {
1232
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42 int offset = tag == TIFF_YRES ? 2 : 0;
1233 42 s->res[offset++] = num;
1234 42 s->res[offset] = den;
1235
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42 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1236 33 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1237 33 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1238
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33 if (num > INT64_MAX || den > INT64_MAX) {
1239 num = num >> 1;
1240 den = den >> 1;
1241 }
1242 33 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1243 num, den, INT32_MAX);
1244
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33 if (!s->avctx->sample_aspect_ratio.den)
1245 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1246 }
1247 42 }
1248
1249 519 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1250 {
1251 AVFrameSideData *sd;
1252 GetByteContext gb_temp;
1253 519 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1254 int i, start;
1255 int pos;
1256 int ret;
1257 double *dp;
1258
1259 519 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1260
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519 if (ret < 0) {
1261 goto end;
1262 }
1263
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519 if (tag <= s->last_tag)
1264 return AVERROR_INVALIDDATA;
1265
1266 // We ignore TIFF_STRIP_SIZE as it is sometimes in the logic but wrong order around TIFF_STRIP_OFFS
1267
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519 if (tag != TIFF_STRIP_SIZE)
1268 486 s->last_tag = tag;
1269
1270 519 off = bytestream2_tell(&s->gb);
1271
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519 if (count == 1) {
1272
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374 switch (type) {
1273 332 case TIFF_BYTE:
1274 case TIFF_SHORT:
1275 case TIFF_LONG:
1276 332 value = ff_tget(&s->gb, type, s->le);
1277 332 break;
1278 42 case TIFF_RATIONAL:
1279 42 value = ff_tget_long(&s->gb, s->le);
1280 42 value2 = ff_tget_long(&s->gb, s->le);
1281
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42 if (!value2) {
1282 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator in rational\n");
1283 value2 = 1;
1284 }
1285
1286 42 break;
1287 case TIFF_STRING:
1288 if (count <= 4) {
1289 break;
1290 }
1291 default:
1292 value = UINT_MAX;
1293 }
1294 }
1295
1296
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519 switch (tag) {
1297 15 case TIFF_SUBFILE:
1298 15 s->is_thumbnail = (value != 0);
1299 15 break;
1300 33 case TIFF_WIDTH:
1301 33 s->width = value;
1302 33 break;
1303 33 case TIFF_HEIGHT:
1304 33 s->height = value;
1305 33 break;
1306 33 case TIFF_BPP:
1307
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33 if (count > 5 || count <= 0) {
1308 av_log(s->avctx, AV_LOG_ERROR,
1309 "This format is not supported (bpp=%d, %d components)\n",
1310 value, count);
1311 return AVERROR_INVALIDDATA;
1312 }
1313 33 s->bppcount = count;
1314
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33 if (count == 1)
1315 4 s->bpp = value;
1316 else {
1317
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29 switch (type) {
1318 29 case TIFF_BYTE:
1319 case TIFF_SHORT:
1320 case TIFF_LONG:
1321 29 s->bpp = 0;
1322
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29 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1323 return AVERROR_INVALIDDATA;
1324
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122 for (i = 0; i < count; i++)
1325 93 s->bpp += ff_tget(&s->gb, type, s->le);
1326 29 break;
1327 default:
1328 s->bpp = -1;
1329 }
1330 }
1331 33 break;
1332 33 case TIFF_SAMPLES_PER_PIXEL:
1333
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33 if (count != 1) {
1334 av_log(s->avctx, AV_LOG_ERROR,
1335 "Samples per pixel requires a single value, many provided\n");
1336 return AVERROR_INVALIDDATA;
1337 }
1338
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33 if (value > 5 || value <= 0) {
1339 av_log(s->avctx, AV_LOG_ERROR,
1340 "Invalid samples per pixel %d\n", value);
1341 return AVERROR_INVALIDDATA;
1342 }
1343
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33 if (s->bppcount == 1)
1344 4 s->bpp *= value;
1345 33 s->bppcount = value;
1346 33 break;
1347 33 case TIFF_COMPR:
1348 33 s->compr = value;
1349 33 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1350 33 s->predictor = 0;
1351
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33 switch (s->compr) {
1352 25 case TIFF_RAW:
1353 case TIFF_PACKBITS:
1354 case TIFF_LZW:
1355 case TIFF_CCITT_RLE:
1356 25 break;
1357 4 case TIFF_G3:
1358 case TIFF_G4:
1359 4 s->fax_opts = 0;
1360 4 break;
1361 4 case TIFF_DEFLATE:
1362 case TIFF_ADOBE_DEFLATE:
1363 #if CONFIG_ZLIB
1364 4 break;
1365 #else
1366 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1367 return AVERROR(ENOSYS);
1368 #endif
1369 case TIFF_JPEG:
1370 case TIFF_NEWJPEG:
1371 s->is_jpeg = 1;
1372 break;
1373 case TIFF_LZMA:
1374 #if CONFIG_LZMA
1375 break;
1376 #else
1377 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1378 return AVERROR(ENOSYS);
1379 #endif
1380 default:
1381 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1382 s->compr);
1383 return AVERROR_INVALIDDATA;
1384 }
1385 33 break;
1386 33 case TIFF_ROWSPERSTRIP:
1387
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33 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1388 value = s->height;
1389 33 s->rps = FFMIN(value, s->height);
1390 33 break;
1391 33 case TIFF_STRIP_OFFS:
1392
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33 if (count == 1) {
1393
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14 if (value > INT_MAX) {
1394 av_log(s->avctx, AV_LOG_ERROR,
1395 "strippos %u too large\n", value);
1396 return AVERROR_INVALIDDATA;
1397 }
1398 14 s->strippos = 0;
1399 14 s->stripoff = value;
1400 } else
1401 19 s->strippos = off;
1402 33 s->strips = count;
1403
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33 if (s->strips == s->bppcount)
1404 2 s->rps = s->height;
1405 33 s->sot = type;
1406 33 break;
1407 33 case TIFF_STRIP_SIZE:
1408
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33 if (count == 1) {
1409
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14 if (value > INT_MAX) {
1410 av_log(s->avctx, AV_LOG_ERROR,
1411 "stripsize %u too large\n", value);
1412 return AVERROR_INVALIDDATA;
1413 }
1414 14 s->stripsizesoff = 0;
1415 14 s->stripsize = value;
1416 14 s->strips = 1;
1417 } else {
1418 19 s->stripsizesoff = off;
1419 }
1420 33 s->strips = count;
1421 33 s->sstype = type;
1422 33 break;
1423 42 case TIFF_XRES:
1424 case TIFF_YRES:
1425 42 set_sar(s, tag, value, value2);
1426 42 break;
1427 case TIFF_TILE_OFFSETS:
1428 s->tile_offsets_offset = off;
1429 s->is_tiled = 1;
1430 break;
1431 case TIFF_TILE_BYTE_COUNTS:
1432 s->tile_byte_counts_offset = off;
1433 break;
1434 case TIFF_TILE_LENGTH:
1435 s->tile_length = value;
1436 break;
1437 case TIFF_TILE_WIDTH:
1438 s->tile_width = value;
1439 break;
1440 8 case TIFF_PREDICTOR:
1441 8 s->predictor = value;
1442 8 break;
1443 case TIFF_SUB_IFDS:
1444 if (count == 1)
1445 s->sub_ifd = value;
1446 else if (count > 1)
1447 s->sub_ifd = ff_tget_long(&s->gb, s->le); /** Only get the first SubIFD */
1448 break;
1449 case TIFF_GRAY_RESPONSE_CURVE:
1450 case DNG_LINEARIZATION_TABLE:
1451 if (count < 1 || count > FF_ARRAY_ELEMS(s->dng_lut))
1452 return AVERROR_INVALIDDATA;
1453 for (int i = 0; i < count; i++)
1454 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1455 s->white_level = s->dng_lut[count-1];
1456 break;
1457 case DNG_BLACK_LEVEL:
1458 if (count > FF_ARRAY_ELEMS(s->black_level))
1459 return AVERROR_INVALIDDATA;
1460 s->black_level[0] = value / (float)value2;
1461 for (int i = 0; i < count && count > 1; i++) {
1462 if (type == TIFF_RATIONAL) {
1463 value = ff_tget_long(&s->gb, s->le);
1464 value2 = ff_tget_long(&s->gb, s->le);
1465 if (!value2) {
1466 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator\n");
1467 value2 = 1;
1468 }
1469
1470 s->black_level[i] = value / (float)value2;
1471 } else if (type == TIFF_SRATIONAL) {
1472 int value = ff_tget_long(&s->gb, s->le);
1473 int value2 = ff_tget_long(&s->gb, s->le);
1474 if (!value2) {
1475 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator\n");
1476 value2 = 1;
1477 }
1478
1479 s->black_level[i] = value / (float)value2;
1480 } else {
1481 s->black_level[i] = ff_tget(&s->gb, type, s->le);
1482 }
1483 }
1484 for (int i = count; i < 4 && count > 0; i++)
1485 s->black_level[i] = s->black_level[count - 1];
1486 break;
1487 case DNG_WHITE_LEVEL:
1488 s->white_level = value;
1489 break;
1490 case TIFF_CFA_PATTERN_DIM:
1491 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1492 ff_tget(&s->gb, type, s->le) != 2)) {
1493 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1494 return AVERROR_INVALIDDATA;
1495 }
1496 break;
1497 case TIFF_CFA_PATTERN:
1498 s->is_bayer = 1;
1499 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1500 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1501 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1502 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1503 break;
1504
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33 case TIFF_PHOTOMETRIC:
1505 switch (value) {
1506 33 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1507 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1508 case TIFF_PHOTOMETRIC_RGB:
1509 case TIFF_PHOTOMETRIC_PALETTE:
1510 case TIFF_PHOTOMETRIC_SEPARATED:
1511 case TIFF_PHOTOMETRIC_YCBCR:
1512 case TIFF_PHOTOMETRIC_CFA:
1513 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1514 33 s->photometric = value;
1515 33 break;
1516 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1517 case TIFF_PHOTOMETRIC_CIE_LAB:
1518 case TIFF_PHOTOMETRIC_ICC_LAB:
1519 case TIFF_PHOTOMETRIC_ITU_LAB:
1520 case TIFF_PHOTOMETRIC_LOG_L:
1521 case TIFF_PHOTOMETRIC_LOG_LUV:
1522 avpriv_report_missing_feature(s->avctx,
1523 "PhotometricInterpretation 0x%04X",
1524 value);
1525 return AVERROR_PATCHWELCOME;
1526 default:
1527 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1528 "unknown\n", value);
1529 return AVERROR_INVALIDDATA;
1530 }
1531 33 break;
1532 16 case TIFF_FILL_ORDER:
1533
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16 if (value < 1 || value > 2) {
1534 av_log(s->avctx, AV_LOG_ERROR,
1535 "Unknown FillOrder value %d, trying default one\n", value);
1536 value = 1;
1537 }
1538 16 s->fill_order = value - 1;
1539 16 break;
1540 case TIFF_PAL: {
1541 GetByteContext pal_gb[3];
1542 off = type_sizes[type];
1543 if (count / 3 > 256 ||
1544 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1545 return AVERROR_INVALIDDATA;
1546
1547 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1548 bytestream2_skip(&pal_gb[1], count / 3 * off);
1549 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1550
1551 off = (type_sizes[type] - 1) << 3;
1552 if (off > 31U) {
1553 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1554 return AVERROR_INVALIDDATA;
1555 }
1556
1557 for (i = 0; i < count / 3; i++) {
1558 uint32_t p = 0xFF000000;
1559 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1560 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1561 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1562 s->palette[i] = p;
1563 }
1564 s->palette_is_set = 1;
1565 break;
1566 }
1567 18 case TIFF_PLANAR:
1568 18 s->planar = value == 2;
1569 18 break;
1570 case TIFF_YCBCR_SUBSAMPLING:
1571 if (count != 2) {
1572 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1573 return AVERROR_INVALIDDATA;
1574 }
1575 for (i = 0; i < count; i++) {
1576 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1577 if (s->subsampling[i] <= 0) {
1578 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1579 s->subsampling[i] = 1;
1580 return AVERROR_INVALIDDATA;
1581 }
1582 }
1583 break;
1584 case TIFF_T4OPTIONS:
1585 if (s->compr == TIFF_G3)
1586 s->fax_opts = value;
1587 break;
1588 case TIFF_T6OPTIONS:
1589 if (s->compr == TIFF_G4)
1590 s->fax_opts = value;
1591 break;
1592 #define ADD_METADATA(count, name, sep)\
1593 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1594 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1595 goto end;\
1596 }
1597 case TIFF_MODEL_PIXEL_SCALE:
1598 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1599 break;
1600 case TIFF_MODEL_TRANSFORMATION:
1601 ADD_METADATA(count, "ModelTransformationTag", NULL);
1602 break;
1603 case TIFF_MODEL_TIEPOINT:
1604 ADD_METADATA(count, "ModelTiepointTag", NULL);
1605 break;
1606 case TIFF_GEO_KEY_DIRECTORY:
1607 if (s->geotag_count) {
1608 avpriv_request_sample(s->avctx, "Multiple geo key directories");
1609 return AVERROR_INVALIDDATA;
1610 }
1611 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1612 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1613 s->geotag_count = ff_tget_short(&s->gb, s->le);
1614 if (s->geotag_count > count / 4 - 1) {
1615 s->geotag_count = count / 4 - 1;
1616 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1617 }
1618 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1619 || s->geotag_count == 0) {
1620 s->geotag_count = 0;
1621 return -1;
1622 }
1623 s->geotags = av_calloc(s->geotag_count, sizeof(*s->geotags));
1624 if (!s->geotags) {
1625 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1626 s->geotag_count = 0;
1627 goto end;
1628 }
1629 for (i = 0; i < s->geotag_count; i++) {
1630 unsigned val;
1631 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1632 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1633 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1634 val = ff_tget_short(&s->gb, s->le);
1635
1636 if (!s->geotags[i].type) {
1637 const char *str = get_geokey_val(s->geotags[i].key, val);
1638
1639 s->geotags[i].val = str ? av_strdup(str) : av_asprintf("Unknown-%u", val);
1640 if (!s->geotags[i].val)
1641 return AVERROR(ENOMEM);
1642 } else
1643 s->geotags[i].offset = val;
1644 }
1645 break;
1646 case TIFF_GEO_DOUBLE_PARAMS:
1647 if (count >= INT_MAX / sizeof(int64_t))
1648 return AVERROR_INVALIDDATA;
1649 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1650 return AVERROR_INVALIDDATA;
1651 dp = av_malloc_array(count, sizeof(double));
1652 if (!dp) {
1653 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1654 goto end;
1655 }
1656 for (i = 0; i < count; i++)
1657 dp[i] = ff_tget_double(&s->gb, s->le);
1658 for (i = 0; i < s->geotag_count; i++) {
1659 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
1660 if (s->geotags[i].count == 0
1661 || s->geotags[i].offset + s->geotags[i].count > count) {
1662 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1663 } else if (s->geotags[i].val) {
1664 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1665 } else {
1666 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1667 if (!ap) {
1668 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1669 av_freep(&dp);
1670 return AVERROR(ENOMEM);
1671 }
1672 s->geotags[i].val = ap;
1673 }
1674 }
1675 }
1676 av_freep(&dp);
1677 break;
1678 case TIFF_GEO_ASCII_PARAMS:
1679 pos = bytestream2_tell(&s->gb);
1680 for (i = 0; i < s->geotag_count; i++) {
1681 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1682 if (s->geotags[i].count == 0
1683 || s->geotags[i].offset + s->geotags[i].count > count) {
1684 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1685 } else {
1686 char *ap;
1687
1688 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1689 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1690 return AVERROR_INVALIDDATA;
1691 if (s->geotags[i].val)
1692 return AVERROR_INVALIDDATA;
1693 ap = av_malloc(s->geotags[i].count);
1694 if (!ap) {
1695 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1696 return AVERROR(ENOMEM);
1697 }
1698 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1699 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1700 s->geotags[i].val = ap;
1701 }
1702 }
1703 }
1704 break;
1705 case TIFF_ICC_PROFILE:
1706 gb_temp = s->gb;
1707 bytestream2_seek(&gb_temp, off, SEEK_SET);
1708
1709 if (bytestream2_get_bytes_left(&gb_temp) < count)
1710 return AVERROR_INVALIDDATA;
1711
1712 ret = ff_frame_new_side_data(s->avctx, frame, AV_FRAME_DATA_ICC_PROFILE, count, &sd);
1713 if (ret < 0)
1714 return ret;
1715 if (sd)
1716 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1717 break;
1718 case TIFF_ARTIST:
1719 ADD_METADATA(count, "artist", NULL);
1720 break;
1721 case TIFF_COPYRIGHT:
1722 ADD_METADATA(count, "copyright", NULL);
1723 break;
1724 2 case TIFF_DATE:
1725
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2 ADD_METADATA(count, "date", NULL);
1726 2 break;
1727 6 case TIFF_DOCUMENT_NAME:
1728
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6 ADD_METADATA(count, "document_name", NULL);
1729 6 break;
1730 case TIFF_HOST_COMPUTER:
1731 ADD_METADATA(count, "computer", NULL);
1732 break;
1733 4 case TIFF_IMAGE_DESCRIPTION:
1734
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4 ADD_METADATA(count, "description", NULL);
1735 4 break;
1736 case TIFF_MAKE:
1737 ADD_METADATA(count, "make", NULL);
1738 break;
1739 case TIFF_MODEL:
1740 ADD_METADATA(count, "model", NULL);
1741 break;
1742 case TIFF_PAGE_NAME:
1743 ADD_METADATA(count, "page_name", NULL);
1744 break;
1745 12 case TIFF_PAGE_NUMBER:
1746
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12 ADD_METADATA(count, "page_number", " / ");
1747 // need to seek back to re-read the page number
1748 12 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1749 // read the page number
1750 12 s->cur_page = ff_tget_short(&s->gb, s->le);
1751 // get back to where we were before the previous seek
1752 12 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1753 12 break;
1754 2 case TIFF_SOFTWARE_NAME:
1755
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2 ADD_METADATA(count, "software", NULL);
1756 2 break;
1757 case DNG_VERSION:
1758 if (count == 4) {
1759 unsigned int ver[4];
1760 ver[0] = ff_tget(&s->gb, type, s->le);
1761 ver[1] = ff_tget(&s->gb, type, s->le);
1762 ver[2] = ff_tget(&s->gb, type, s->le);
1763 ver[3] = ff_tget(&s->gb, type, s->le);
1764
1765 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1766 ver[0], ver[1], ver[2], ver[3]);
1767
1768 tiff_set_type(s, TIFF_TYPE_DNG);
1769 }
1770 break;
1771 case DNG_ANALOG_BALANCE:
1772 if (type != TIFF_RATIONAL)
1773 break;
1774
1775 for (int i = 0; i < 3; i++) {
1776 value = ff_tget_long(&s->gb, s->le);
1777 value2 = ff_tget_long(&s->gb, s->le);
1778 if (!value2) {
1779 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator\n");
1780 value2 = 1;
1781 }
1782
1783 s->analog_balance[i] = value / (float)value2;
1784 }
1785 break;
1786 case DNG_AS_SHOT_NEUTRAL:
1787 if (type != TIFF_RATIONAL)
1788 break;
1789
1790 for (int i = 0; i < 3; i++) {
1791 value = ff_tget_long(&s->gb, s->le);
1792 value2 = ff_tget_long(&s->gb, s->le);
1793 if (!value2) {
1794 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator\n");
1795 value2 = 1;
1796 }
1797
1798 s->as_shot_neutral[i] = value / (float)value2;
1799 }
1800 break;
1801 case DNG_AS_SHOT_WHITE_XY:
1802 if (type != TIFF_RATIONAL)
1803 break;
1804
1805 for (int i = 0; i < 2; i++) {
1806 value = ff_tget_long(&s->gb, s->le);
1807 value2 = ff_tget_long(&s->gb, s->le);
1808 if (!value2) {
1809 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator\n");
1810 value2 = 1;
1811 }
1812
1813 s->as_shot_white[i] = value / (float)value2;
1814 }
1815 s->as_shot_white[2] = 1.f - s->as_shot_white[0] - s->as_shot_white[1];
1816 for (int i = 0; i < 3; i++) {
1817 s->as_shot_white[i] /= d65_white[i];
1818 }
1819 break;
1820 case DNG_COLOR_MATRIX1:
1821 case DNG_COLOR_MATRIX2:
1822 for (int i = 0; i < 3; i++) {
1823 for (int j = 0; j < 3; j++) {
1824 int value = ff_tget_long(&s->gb, s->le);
1825 int value2 = ff_tget_long(&s->gb, s->le);
1826 if (!value2) {
1827 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator\n");
1828 value2 = 1;
1829 }
1830 s->color_matrix[i][j] = value / (float)value2;
1831 }
1832 s->use_color_matrix = 1;
1833 }
1834 break;
1835 case DNG_CAMERA_CALIBRATION1:
1836 case DNG_CAMERA_CALIBRATION2:
1837 for (int i = 0; i < 3; i++) {
1838 for (int j = 0; j < 3; j++) {
1839 int value = ff_tget_long(&s->gb, s->le);
1840 int value2 = ff_tget_long(&s->gb, s->le);
1841 if (!value2) {
1842 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator\n");
1843 value2 = 1;
1844 }
1845 s->camera_calibration[i][j] = value / (float)value2;
1846 }
1847 }
1848 break;
1849 case CINEMADNG_TIME_CODES:
1850 case CINEMADNG_FRAME_RATE:
1851 case CINEMADNG_T_STOP:
1852 case CINEMADNG_REEL_NAME:
1853 case CINEMADNG_CAMERA_LABEL:
1854 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1855 break;
1856 97 default:
1857
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97 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1858 av_log(s->avctx, AV_LOG_ERROR,
1859 "Unknown or unsupported tag %d/0x%0X\n",
1860 tag, tag);
1861 return AVERROR_INVALIDDATA;
1862 }
1863 }
1864 97 end:
1865
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519 if (s->bpp > 128U) {
1866 av_log(s->avctx, AV_LOG_ERROR,
1867 "This format is not supported (bpp=%d, %d components)\n",
1868 s->bpp, count);
1869 s->bpp = 0;
1870 return AVERROR_INVALIDDATA;
1871 }
1872 519 bytestream2_seek(&s->gb, start, SEEK_SET);
1873 519 return 0;
1874 }
1875
1876 static const float xyz2rgb[3][3] = {
1877 { 0.412453f, 0.357580f, 0.180423f },
1878 { 0.212671f, 0.715160f, 0.072169f },
1879 { 0.019334f, 0.119193f, 0.950227f },
1880 };
1881
1882 static void camera_xyz_coeff(TiffContext *s,
1883 float rgb2cam[3][4],
1884 double cam2xyz[4][3])
1885 {
1886 double cam2rgb[4][3], num;
1887 int i, j, k;
1888
1889 for (i = 0; i < 3; i++) {
1890 for (j = 0; j < 3; j++) {
1891 cam2rgb[i][j] = 0.;
1892 for (k = 0; k < 3; k++)
1893 cam2rgb[i][j] += cam2xyz[i][k] * xyz2rgb[k][j];
1894 }
1895 }
1896
1897 for (i = 0; i < 3; i++) {
1898 for (num = j = 0; j < 3; j++)
1899 num += cam2rgb[i][j];
1900 if (!num)
1901 num = 1;
1902 for (j = 0; j < 3; j++)
1903 cam2rgb[i][j] /= num;
1904 s->premultiply[i] = 1.f / num;
1905 }
1906 }
1907
1908 33 static int decode_frame(AVCodecContext *avctx, AVFrame *p,
1909 int *got_frame, AVPacket *avpkt)
1910 {
1911 33 TiffContext *const s = avctx->priv_data;
1912 33 unsigned off, last_off = 0;
1913 int le, ret, plane, planes;
1914 int i, j, entries, stride;
1915 unsigned soff, ssize;
1916 uint8_t *dst;
1917 GetByteContext stripsizes;
1918 GetByteContext stripdata;
1919 int retry_for_subifd, retry_for_page;
1920 int is_dng;
1921 int has_tile_bits, has_strip_bits;
1922
1923 33 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1924
1925 // parse image header
1926
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33 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1927 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1928 return ret;
1929
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33 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1930 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1931 return AVERROR_INVALIDDATA;
1932 }
1933 33 s->le = le;
1934 // TIFF_BPP is not a required tag and defaults to 1
1935
1936 33 s->tiff_type = TIFF_TYPE_TIFF;
1937 33 s->use_color_matrix = 0;
1938 33 again:
1939 33 s->is_thumbnail = 0;
1940 33 s->bppcount = s->bpp = 1;
1941 33 s->photometric = TIFF_PHOTOMETRIC_NONE;
1942 33 s->compr = TIFF_RAW;
1943 33 s->fill_order = 0;
1944 33 s->white_level = 0;
1945 33 s->is_bayer = 0;
1946 33 s->is_tiled = 0;
1947 33 s->is_jpeg = 0;
1948 33 s->cur_page = 0;
1949 33 s->last_tag = 0;
1950
1951
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2162721 for (i = 0; i < 65536; i++)
1952 2162688 s->dng_lut[i] = i;
1953
1954
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165 for (i = 0; i < FF_ARRAY_ELEMS(s->black_level); i++)
1955 132 s->black_level[i] = 0.f;
1956
1957
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165 for (i = 0; i < FF_ARRAY_ELEMS(s->as_shot_neutral); i++)
1958 132 s->as_shot_neutral[i] = 0.f;
1959
1960
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165 for (i = 0; i < FF_ARRAY_ELEMS(s->as_shot_white); i++)
1961 132 s->as_shot_white[i] = 1.f;
1962
1963
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165 for (i = 0; i < FF_ARRAY_ELEMS(s->analog_balance); i++)
1964 132 s->analog_balance[i] = 1.f;
1965
1966
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165 for (i = 0; i < FF_ARRAY_ELEMS(s->premultiply); i++)
1967 132 s->premultiply[i] = 1.f;
1968
1969
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165 for (i = 0; i < 4; i++)
1970
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660 for (j = 0; j < 4; j++)
1971
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528 s->camera_calibration[i][j] = i == j;
1972
1973 33 free_geotags(s);
1974
1975 // Reset these offsets so we can tell if they were set this frame
1976 33 s->stripsizesoff = s->strippos = 0;
1977 /* parse image file directory */
1978 33 bytestream2_seek(&s->gb, off, SEEK_SET);
1979 33 entries = ff_tget_short(&s->gb, le);
1980
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33 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1981 return AVERROR_INVALIDDATA;
1982
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552 for (i = 0; i < entries; i++) {
1983
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519 if ((ret = tiff_decode_tag(s, p)) < 0)
1984 return ret;
1985 }
1986
1987
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33 if (s->get_thumbnail && !s->is_thumbnail) {
1988 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1989 return AVERROR_EOF;
1990 }
1991
1992 /** whether we should process this IFD's SubIFD */
1993
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33 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1994 /** whether we should process this multi-page IFD's next page */
1995
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33 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1996
1997
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33 if (retry_for_page) {
1998 // set offset to the next IFD
1999 off = ff_tget_long(&s->gb, le);
2000
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33 } else if (retry_for_subifd) {
2001 // set offset to the SubIFD
2002 off = s->sub_ifd;
2003 }
2004
2005
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33 if (retry_for_subifd || retry_for_page) {
2006 if (!off) {
2007 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
2008 return AVERROR_INVALIDDATA;
2009 }
2010 if (off <= last_off) {
2011 avpriv_request_sample(s->avctx, "non increasing IFD offset");
2012 return AVERROR_INVALIDDATA;
2013 }
2014 last_off = off;
2015 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
2016 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
2017 return AVERROR_INVALIDDATA;
2018 }
2019 s->sub_ifd = 0;
2020 goto again;
2021 }
2022
2023 /* At this point we've decided on which (Sub)IFD to process */
2024
2025
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33 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
2026
2027
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33 for (i = 0; i<s->geotag_count; i++) {
2028 const char *keyname = get_geokey_name(s->geotags[i].key);
2029 if (!keyname) {
2030 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
2031 continue;
2032 }
2033 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
2034 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
2035 continue;
2036 }
2037 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, AV_DICT_DONT_STRDUP_VAL);
2038 s->geotags[i].val = NULL;
2039 if (ret<0) {
2040 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
2041 return ret;
2042 }
2043 }
2044
2045
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33 if (is_dng) {
2046 double cam2xyz[4][3];
2047 float cmatrix[3][4];
2048 float pmin = FLT_MAX;
2049 int bps;
2050
2051 for (i = 0; i < 3; i++) {
2052 for (j = 0; j < 3; j++)
2053 s->camera_calibration[i][j] *= s->analog_balance[i];
2054 }
2055
2056 if (!s->use_color_matrix) {
2057 for (i = 0; i < 3; i++) {
2058 if (s->camera_calibration[i][i])
2059 s->premultiply[i] /= s->camera_calibration[i][i];
2060 }
2061 } else {
2062 for (int c = 0; c < 3; c++) {
2063 for (i = 0; i < 3; i++) {
2064 cam2xyz[c][i] = 0.;
2065 for (j = 0; j < 3; j++)
2066 cam2xyz[c][i] += s->camera_calibration[c][j] * s->color_matrix[j][i] * s->as_shot_white[i];
2067 }
2068 }
2069
2070 camera_xyz_coeff(s, cmatrix, cam2xyz);
2071 }
2072
2073 for (int c = 0; c < 3; c++)
2074 pmin = fminf(pmin, s->premultiply[c]);
2075
2076 for (int c = 0; c < 3; c++)
2077 s->premultiply[c] /= pmin;
2078