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 "libavutil/reverse.h"
43 #include "avcodec.h"
44 #include "bytestream.h"
45 #include "codec_internal.h"
46 #include "faxcompr.h"
47 #include "internal.h"
48 #include "lzw.h"
49 #include "mathops.h"
50 #include "tiff.h"
51 #include "tiff_data.h"
52 #include "mjpegdec.h"
53 #include "thread.h"
54 #include "get_bits.h"
55
56 typedef struct TiffContext {
57 AVClass *class;
58 AVCodecContext *avctx;
59 GetByteContext gb;
60
61 /* JPEG decoding for DNG */
62 AVCodecContext *avctx_mjpeg; // wrapper context for MJPEG
63 AVPacket *jpkt; // encoded JPEG tile
64 AVFrame *jpgframe; // decoded JPEG tile
65
66 int get_subimage;
67 uint16_t get_page;
68 int get_thumbnail;
69
70 enum TiffType tiff_type;
71 int width, height;
72 unsigned int bpp, bppcount;
73 uint32_t palette[256];
74 int palette_is_set;
75 int le;
76 enum TiffCompr compr;
77 enum TiffPhotometric photometric;
78 int planar;
79 int subsampling[2];
80 int fax_opts;
81 int predictor;
82 int fill_order;
83 uint32_t res[4];
84 int is_thumbnail;
85 unsigned last_tag;
86
87 int is_bayer;
88 uint8_t pattern[4];
89 unsigned black_level;
90 unsigned white_level;
91 uint16_t dng_lut[65536];
92
93 uint32_t sub_ifd;
94 uint16_t cur_page;
95
96 int strips, rps, sstype;
97 int sot;
98 int stripsizesoff, stripsize, stripoff, strippos;
99 LZWState *lzw;
100
101 /* Tile support */
102 int is_tiled;
103 int tile_byte_counts_offset, tile_offsets_offset;
104 int tile_width, tile_length;
105
106 int is_jpeg;
107
108 uint8_t *deinvert_buf;
109 int deinvert_buf_size;
110 uint8_t *yuv_line;
111 unsigned int yuv_line_size;
112
113 int geotag_count;
114 TiffGeoTag *geotags;
115 } TiffContext;
116
tiff_set_type(TiffContext *s, enum TiffType tiff_type)117 static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
118 if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
119 s->tiff_type = tiff_type;
120 }
121
free_geotags(TiffContext *const s)122 static void free_geotags(TiffContext *const s)
123 {
124 int i;
125 for (i = 0; i < s->geotag_count; i++) {
126 if (s->geotags[i].val)
127 av_freep(&s->geotags[i].val);
128 }
129 av_freep(&s->geotags);
130 s->geotag_count = 0;
131 }
132
133 #define RET_GEOKEY(TYPE, array, element)\
134 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
135 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_name_type_map))\
136 return tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
137
get_geokey_name(int key)138 static const char *get_geokey_name(int key)
139 {
140 RET_GEOKEY(VERT, vert, name);
141 RET_GEOKEY(PROJ, proj, name);
142 RET_GEOKEY(GEOG, geog, name);
143 RET_GEOKEY(CONF, conf, name);
144
145 return NULL;
146 }
147
get_geokey_type(int key)148 static int get_geokey_type(int key)
149 {
150 RET_GEOKEY(VERT, vert, type);
151 RET_GEOKEY(PROJ, proj, type);
152 RET_GEOKEY(GEOG, geog, type);
153 RET_GEOKEY(CONF, conf, type);
154
155 return AVERROR_INVALIDDATA;
156 }
157
cmp_id_key(const void *id, const void *k)158 static int cmp_id_key(const void *id, const void *k)
159 {
160 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
161 }
162
search_keyval(const TiffGeoTagKeyName *keys, int n, int id)163 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
164 {
165 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
166 if(r)
167 return r->name;
168
169 return NULL;
170 }
171
get_geokey_val(int key, int val)172 static char *get_geokey_val(int key, int val)
173 {
174 char *ap;
175
176 if (val == TIFF_GEO_KEY_UNDEFINED)
177 return av_strdup("undefined");
178 if (val == TIFF_GEO_KEY_USER_DEFINED)
179 return av_strdup("User-Defined");
180
181 #define RET_GEOKEY_VAL(TYPE, array)\
182 if (val >= TIFF_##TYPE##_OFFSET &&\
183 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_codes))\
184 return av_strdup(tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
185
186 switch (key) {
187 case TIFF_GT_MODEL_TYPE_GEOKEY:
188 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
189 break;
190 case TIFF_GT_RASTER_TYPE_GEOKEY:
191 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
192 break;
193 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
194 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
195 case TIFF_VERTICAL_UNITS_GEOKEY:
196 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
197 break;
198 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
199 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
200 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
201 break;
202 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
203 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
204 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
205 break;
206 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
207 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
208 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
209 break;
210 case TIFF_GEOG_ELLIPSOID_GEOKEY:
211 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
212 break;
213 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
214 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
215 break;
216 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
217 ap = av_strdup(search_keyval(tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(tiff_proj_cs_type_codes), val));
218 if(ap) return ap;
219 break;
220 case TIFF_PROJECTION_GEOKEY:
221 ap = av_strdup(search_keyval(tiff_projection_codes, FF_ARRAY_ELEMS(tiff_projection_codes), val));
222 if(ap) return ap;
223 break;
224 case TIFF_PROJ_COORD_TRANS_GEOKEY:
225 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
226 break;
227 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
228 RET_GEOKEY_VAL(VERT_CS, vert_cs);
229 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
230 break;
231
232 }
233
234 ap = av_malloc(14);
235 if (ap)
236 snprintf(ap, 14, "Unknown-%d", val);
237 return ap;
238 }
239
doubles2str(double *dp, int count, const char *sep)240 static char *doubles2str(double *dp, int count, const char *sep)
241 {
242 int i;
243 char *ap, *ap0;
244 uint64_t component_len;
245 if (!sep) sep = ", ";
246 component_len = 24LL + strlen(sep);
247 if (count >= (INT_MAX - 1)/component_len)
248 return NULL;
249 ap = av_malloc(component_len * count + 1);
250 if (!ap)
251 return NULL;
252 ap0 = ap;
253 ap[0] = '\0';
254 for (i = 0; i < count; i++) {
255 unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep);
256 if(l >= component_len) {
257 av_free(ap0);
258 return NULL;
259 }
260 ap += l;
261 }
262 ap0[strlen(ap0) - strlen(sep)] = '\0';
263 return ap0;
264 }
265
add_metadata(int count, int type, const char *name, const char *sep, TiffContext *s, AVFrame *frame)266 static int add_metadata(int count, int type,
267 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
268 {
269 switch(type) {
270 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, &frame->metadata);
271 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata);
272 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata);
273 default : return AVERROR_INVALIDDATA;
274 };
275 }
276
277 /**
278 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
279 */
dng_process_color16(uint16_t value, const uint16_t *lut, uint16_t black_level, float scale_factor)280 static uint16_t av_always_inline dng_process_color16(uint16_t value,
281 const uint16_t *lut,
282 uint16_t black_level,
283 float scale_factor)
284 {
285 float value_norm;
286
287 // Lookup table lookup
288 if (lut)
289 value = lut[value];
290
291 // Black level subtraction
292 value = av_clip_uint16_c((unsigned)value - black_level);
293
294 // Color scaling
295 value_norm = (float)value * scale_factor;
296
297 value = av_clip_uint16_c(value_norm * 65535);
298
299 return value;
300 }
301
dng_process_color8(uint16_t value, const uint16_t *lut, uint16_t black_level, float scale_factor)302 static uint16_t av_always_inline dng_process_color8(uint16_t value,
303 const uint16_t *lut,
304 uint16_t black_level,
305 float scale_factor)
306 {
307 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
308 }
309
dng_blit(TiffContext *s, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int width, int height, int is_single_comp, int is_u16)310 static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
311 const uint8_t *src, int src_stride, int width, int height,
312 int is_single_comp, int is_u16)
313 {
314 int line, col;
315 float scale_factor;
316
317 scale_factor = 1.0f / (s->white_level - s->black_level);
318
319 if (is_single_comp) {
320 if (!is_u16)
321 return; /* <= 8bpp unsupported */
322
323 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
324 (split vertically in the middle). */
325 for (line = 0; line < height / 2; line++) {
326 uint16_t *dst_u16 = (uint16_t *)dst;
327 uint16_t *src_u16 = (uint16_t *)src;
328
329 /* Blit first half of input row row to initial row of output */
330 for (col = 0; col < width; col++)
331 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
332
333 /* Advance the destination pointer by a row (source pointer remains in the same place) */
334 dst += dst_stride * sizeof(uint16_t);
335 dst_u16 = (uint16_t *)dst;
336
337 /* Blit second half of input row row to next row of output */
338 for (col = 0; col < width; col++)
339 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
340
341 dst += dst_stride * sizeof(uint16_t);
342 src += src_stride * sizeof(uint16_t);
343 }
344 } else {
345 /* Input and output image are the same size and the MJpeg decoder has done per-component
346 deinterleaving, so blitting here is straightforward. */
347 if (is_u16) {
348 for (line = 0; line < height; line++) {
349 uint16_t *dst_u16 = (uint16_t *)dst;
350 uint16_t *src_u16 = (uint16_t *)src;
351
352 for (col = 0; col < width; col++)
353 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
354
355 dst += dst_stride * sizeof(uint16_t);
356 src += src_stride * sizeof(uint16_t);
357 }
358 } else {
359 for (line = 0; line < height; line++) {
360 uint8_t *dst_u8 = dst;
361 const uint8_t *src_u8 = src;
362
363 for (col = 0; col < width; col++)
364 *dst_u8++ = dng_process_color8(*src_u8++, s->dng_lut, s->black_level, scale_factor);
365
366 dst += dst_stride;
367 src += src_stride;
368 }
369 }
370 }
371 }
372
horizontal_fill(TiffContext *s, unsigned int bpp, uint8_t* dst, int usePtr, const uint8_t *src, uint8_t c, int width, int offset)373 static void av_always_inline horizontal_fill(TiffContext *s,
374 unsigned int bpp, uint8_t* dst,
375 int usePtr, const uint8_t *src,
376 uint8_t c, int width, int offset)
377 {
378 switch (bpp) {
379 case 1:
380 while (--width >= 0) {
381 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
382 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
383 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
384 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
385 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
386 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
387 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
388 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
389 }
390 break;
391 case 2:
392 while (--width >= 0) {
393 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
394 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
395 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
396 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
397 }
398 break;
399 case 4:
400 while (--width >= 0) {
401 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
402 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
403 }
404 break;
405 case 10:
406 case 12:
407 case 14: {
408 uint16_t *dst16 = (uint16_t *)dst;
409 int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
410 uint8_t shift = is_dng ? 0 : 16 - bpp;
411 GetBitContext gb;
412
413 init_get_bits8(&gb, src, width);
414 for (int i = 0; i < s->width; i++) {
415 dst16[i] = get_bits(&gb, bpp) << shift;
416 }
417 }
418 break;
419 default:
420 if (usePtr) {
421 memcpy(dst + offset, src, width);
422 } else {
423 memset(dst + offset, c, width);
424 }
425 }
426 }
427
deinvert_buffer(TiffContext *s, const uint8_t *src, int size)428 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
429 {
430 int i;
431
432 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
433 if (!s->deinvert_buf)
434 return AVERROR(ENOMEM);
435 for (i = 0; i < size; i++)
436 s->deinvert_buf[i] = ff_reverse[src[i]];
437
438 return 0;
439 }
440
unpack_gray(TiffContext *s, AVFrame *p, const uint8_t *src, int lnum, int width, int bpp)441 static void unpack_gray(TiffContext *s, AVFrame *p,
442 const uint8_t *src, int lnum, int width, int bpp)
443 {
444 GetBitContext gb;
445 uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]);
446
447 init_get_bits8(&gb, src, width);
448
449 for (int i = 0; i < s->width; i++) {
450 dst[i] = get_bits(&gb, bpp);
451 }
452 }
453
unpack_yuv(TiffContext *s, AVFrame *p, const uint8_t *src, int lnum)454 static void unpack_yuv(TiffContext *s, AVFrame *p,
455 const uint8_t *src, int lnum)
456 {
457 int i, j, k;
458 int w = (s->width - 1) / s->subsampling[0] + 1;
459 uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
460 uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
461 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
462 for (i = 0; i < w; i++) {
463 for (j = 0; j < s->subsampling[1]; j++)
464 for (k = 0; k < s->subsampling[0]; k++)
465 p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
466 FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++;
467 *pu++ = *src++;
468 *pv++ = *src++;
469 }
470 }else{
471 for (i = 0; i < w; i++) {
472 for (j = 0; j < s->subsampling[1]; j++)
473 for (k = 0; k < s->subsampling[0]; k++)
474 p->data[0][(lnum + j) * p->linesize[0] +
475 i * s->subsampling[0] + k] = *src++;
476 *pu++ = *src++;
477 *pv++ = *src++;
478 }
479 }
480 }
481
482 #if CONFIG_ZLIB
tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src, int size)483 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
484 int size)
485 {
486 z_stream zstream = { 0 };
487 int zret;
488
489 zstream.next_in = src;
490 zstream.avail_in = size;
491 zstream.next_out = dst;
492 zstream.avail_out = *len;
493 zret = inflateInit(&zstream);
494 if (zret != Z_OK) {
495 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
496 return zret;
497 }
498 zret = inflate(&zstream, Z_SYNC_FLUSH);
499 inflateEnd(&zstream);
500 *len = zstream.total_out;
501 return zret == Z_STREAM_END ? Z_OK : zret;
502 }
503
tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride, const uint8_t *src, int size, int width, int lines, int strip_start, int is_yuv)504 static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
505 const uint8_t *src, int size, int width, int lines,
506 int strip_start, int is_yuv)
507 {
508 uint8_t *zbuf;
509 unsigned long outlen;
510 int ret, line;
511 outlen = width * lines;
512 zbuf = av_malloc(outlen);
513 if (!zbuf)
514 return AVERROR(ENOMEM);
515 if (s->fill_order) {
516 if ((ret = deinvert_buffer(s, src, size)) < 0) {
517 av_free(zbuf);
518 return ret;
519 }
520 src = s->deinvert_buf;
521 }
522 ret = tiff_uncompress(zbuf, &outlen, src, size);
523 if (ret != Z_OK) {
524 av_log(s->avctx, AV_LOG_ERROR,
525 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
526 (unsigned long)width * lines, ret);
527 av_free(zbuf);
528 return AVERROR_UNKNOWN;
529 }
530 src = zbuf;
531 for (line = 0; line < lines; line++) {
532 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
533 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
534 } else {
535 memcpy(dst, src, width);
536 }
537 if (is_yuv) {
538 unpack_yuv(s, p, dst, strip_start + line);
539 line += s->subsampling[1] - 1;
540 }
541 dst += stride;
542 src += width;
543 }
544 av_free(zbuf);
545 return 0;
546 }
547 #endif
548
549 #if CONFIG_LZMA
tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src, int size)550 static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src,
551 int size)
552 {
553 lzma_stream stream = LZMA_STREAM_INIT;
554 lzma_ret ret;
555
556 stream.next_in = (uint8_t *)src;
557 stream.avail_in = size;
558 stream.next_out = dst;
559 stream.avail_out = *len;
560 ret = lzma_stream_decoder(&stream, UINT64_MAX, 0);
561 if (ret != LZMA_OK) {
562 av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret);
563 return ret;
564 }
565 ret = lzma_code(&stream, LZMA_RUN);
566 lzma_end(&stream);
567 *len = stream.total_out;
568 return ret == LZMA_STREAM_END ? LZMA_OK : ret;
569 }
570
tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride, const uint8_t *src, int size, int width, int lines, int strip_start, int is_yuv)571 static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
572 const uint8_t *src, int size, int width, int lines,
573 int strip_start, int is_yuv)
574 {
575 uint64_t outlen = width * (uint64_t)lines;
576 int ret, line;
577 uint8_t *buf = av_malloc(outlen);
578 if (!buf)
579 return AVERROR(ENOMEM);
580 if (s->fill_order) {
581 if ((ret = deinvert_buffer(s, src, size)) < 0) {
582 av_free(buf);
583 return ret;
584 }
585 src = s->deinvert_buf;
586 }
587 ret = tiff_uncompress_lzma(buf, &outlen, src, size);
588 if (ret != LZMA_OK) {
589 av_log(s->avctx, AV_LOG_ERROR,
590 "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen,
591 (uint64_t)width * lines, ret);
592 av_free(buf);
593 return AVERROR_UNKNOWN;
594 }
595 src = buf;
596 for (line = 0; line < lines; line++) {
597 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
598 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
599 } else {
600 memcpy(dst, src, width);
601 }
602 if (is_yuv) {
603 unpack_yuv(s, p, dst, strip_start + line);
604 line += s->subsampling[1] - 1;
605 }
606 dst += stride;
607 src += width;
608 }
609 av_free(buf);
610 return 0;
611 }
612 #endif
613
tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride, const uint8_t *src, int size, int width, int lines)614 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
615 const uint8_t *src, int size, int width, int lines)
616 {
617 int line;
618 int ret;
619
620 if (s->fill_order) {
621 if ((ret = deinvert_buffer(s, src, size)) < 0)
622 return ret;
623 src = s->deinvert_buf;
624 }
625 ret = ff_ccitt_unpack(s->avctx, src, size, dst, lines, stride,
626 s->compr, s->fax_opts);
627 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
628 for (line = 0; line < lines; line++) {
629 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
630 dst += stride;
631 }
632 return ret;
633 }
634
dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame, int tile_byte_count, int dst_x, int dst_y, int w, int h)635 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
636 int tile_byte_count, int dst_x, int dst_y, int w, int h)
637 {
638 TiffContext *s = avctx->priv_data;
639 uint8_t *dst_data, *src_data;
640 uint32_t dst_offset; /* offset from dst buffer in pixels */
641 int is_single_comp, is_u16, pixel_size;
642 int ret;
643
644 if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb))
645 return AVERROR_INVALIDDATA;
646
647 /* Prepare a packet and send to the MJPEG decoder */
648 av_packet_unref(s->jpkt);
649 s->jpkt->data = (uint8_t*)s->gb.buffer;
650 s->jpkt->size = tile_byte_count;
651
652 if (s->is_bayer) {
653 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
654 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
655 image or not from its own data (and we need that information when decoding it). */
656 mjpegdecctx->bayer = 1;
657 }
658
659 ret = avcodec_send_packet(s->avctx_mjpeg, s->jpkt);
660 if (ret < 0) {
661 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
662 return ret;
663 }
664
665 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
666 if (ret < 0) {
667 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
668
669 /* Normally skip, error if explode */
670 if (avctx->err_recognition & AV_EF_EXPLODE)
671 return AVERROR_INVALIDDATA;
672 else
673 return 0;
674 }
675
676 is_u16 = (s->bpp > 8);
677
678 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
679
680 if (s->jpgframe->width != s->avctx_mjpeg->width ||
681 s->jpgframe->height != s->avctx_mjpeg->height ||
682 s->jpgframe->format != s->avctx_mjpeg->pix_fmt)
683 return AVERROR_INVALIDDATA;
684
685 /* See dng_blit for explanation */
686 if (s->avctx_mjpeg->width == w * 2 &&
687 s->avctx_mjpeg->height == h / 2 &&
688 s->avctx_mjpeg->pix_fmt == AV_PIX_FMT_GRAY16LE) {
689 is_single_comp = 1;
690 } else if (s->avctx_mjpeg->width >= w &&
691 s->avctx_mjpeg->height >= h &&
692 s->avctx_mjpeg->pix_fmt == (is_u16 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8)
693 ) {
694 is_single_comp = 0;
695 } else
696 return AVERROR_INVALIDDATA;
697
698 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
699
700 if (is_single_comp && !is_u16) {
701 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
702 av_frame_unref(s->jpgframe);
703 return AVERROR_PATCHWELCOME;
704 }
705
706 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
707 dst_data = frame->data[0] + dst_offset * pixel_size;
708 src_data = s->jpgframe->data[0];
709
710 dng_blit(s,
711 dst_data,
712 frame->linesize[0] / pixel_size,
713 src_data,
714 s->jpgframe->linesize[0] / pixel_size,
715 w,
716 h,
717 is_single_comp,
718 is_u16);
719
720 av_frame_unref(s->jpgframe);
721
722 return 0;
723 }
724
tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride, const uint8_t *src, int size, int strip_start, int lines)725 static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
726 const uint8_t *src, int size, int strip_start, int lines)
727 {
728 PutByteContext pb;
729 int c, line, pixels, code, ret;
730 const uint8_t *ssrc = src;
731 int width = ((s->width * s->bpp) + 7) >> 3;
732 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
733 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
734 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
735 desc->nb_components >= 3;
736 int is_dng;
737
738 if (s->planar)
739 width /= s->bppcount;
740
741 if (size <= 0)
742 return AVERROR_INVALIDDATA;
743
744 if (is_yuv) {
745 int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
746 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
747 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
748 if (s->yuv_line == NULL) {
749 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
750 return AVERROR(ENOMEM);
751 }
752 dst = s->yuv_line;
753 stride = 0;
754
755 width = (s->width - 1) / s->subsampling[0] + 1;
756 width = width * s->subsampling[0] * s->subsampling[1] + 2*width;
757 av_assert0(width <= bytes_per_row);
758 av_assert0(s->bpp == 24);
759 }
760 if (s->is_bayer) {
761 av_assert0(width == (s->bpp * s->width + 7) >> 3);
762 }
763 av_assert0(!(s->is_bayer && is_yuv));
764 if (p->format == AV_PIX_FMT_GRAY12) {
765 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width);
766 if (s->yuv_line == NULL) {
767 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
768 return AVERROR(ENOMEM);
769 }
770 dst = s->yuv_line;
771 stride = 0;
772 }
773
774 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
775 #if CONFIG_ZLIB
776 return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines,
777 strip_start, is_yuv);
778 #else
779 av_log(s->avctx, AV_LOG_ERROR,
780 "zlib support not enabled, "
781 "deflate compression not supported\n");
782 return AVERROR(ENOSYS);
783 #endif
784 }
785 if (s->compr == TIFF_LZMA) {
786 #if CONFIG_LZMA
787 return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines,
788 strip_start, is_yuv);
789 #else
790 av_log(s->avctx, AV_LOG_ERROR,
791 "LZMA support not enabled\n");
792 return AVERROR(ENOSYS);
793 #endif
794 }
795 if (s->compr == TIFF_LZW) {
796 if (s->fill_order) {
797 if ((ret = deinvert_buffer(s, src, size)) < 0)
798 return ret;
799 ssrc = src = s->deinvert_buf;
800 }
801 if (size > 1 && !src[0] && (src[1]&1)) {
802 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
803 }
804 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
805 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
806 return ret;
807 }
808 for (line = 0; line < lines; line++) {
809 pixels = ff_lzw_decode(s->lzw, dst, width);
810 if (pixels < width) {
811 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
812 pixels, width);
813 return AVERROR_INVALIDDATA;
814 }
815 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
816 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
817 if (is_yuv) {
818 unpack_yuv(s, p, dst, strip_start + line);
819 line += s->subsampling[1] - 1;
820 } else if (p->format == AV_PIX_FMT_GRAY12) {
821 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
822 }
823 dst += stride;
824 }
825 return 0;
826 }
827 if (s->compr == TIFF_CCITT_RLE ||
828 s->compr == TIFF_G3 ||
829 s->compr == TIFF_G4) {
830 if (is_yuv || p->format == AV_PIX_FMT_GRAY12)
831 return AVERROR_INVALIDDATA;
832
833 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
834 }
835
836 bytestream2_init(&s->gb, src, size);
837 bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines));
838
839 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
840
841 /* Decode JPEG-encoded DNGs with strips */
842 if (s->compr == TIFF_NEWJPEG && is_dng) {
843 if (s->strips > 1) {
844 av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n");
845 return AVERROR_PATCHWELCOME;
846 }
847 if (!s->is_bayer)
848 return AVERROR_PATCHWELCOME;
849 if ((ret = dng_decode_jpeg(s->avctx, p, s->stripsize, 0, 0, s->width, s->height)) < 0)
850 return ret;
851 return 0;
852 }
853
854 if (is_dng && stride == 0)
855 return AVERROR_INVALIDDATA;
856
857 for (line = 0; line < lines; line++) {
858 if (src - ssrc > size) {
859 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
860 return AVERROR_INVALIDDATA;
861 }
862
863 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
864 break;
865 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
866 switch (s->compr) {
867 case TIFF_RAW:
868 if (ssrc + size - src < width)
869 return AVERROR_INVALIDDATA;
870
871 if (!s->fill_order) {
872 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
873 dst, 1, src, 0, width, 0);
874 } else {
875 int i;
876 for (i = 0; i < width; i++)
877 dst[i] = ff_reverse[src[i]];
878 }
879
880 /* Color processing for DNG images with uncompressed strips (non-tiled) */
881 if (is_dng) {
882 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
883
884 is_u16 = (s->bpp / s->bppcount > 8);
885 pixel_size_bits = (is_u16 ? 16 : 8);
886 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
887
888 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
889 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
890 dng_blit(s,
891 dst,
892 0, // no stride, only 1 line
893 dst,
894 0, // no stride, only 1 line
895 elements,
896 1,
897 0, // single-component variation is only preset in JPEG-encoded DNGs
898 is_u16);
899 }
900
901 src += width;
902 break;
903 case TIFF_PACKBITS:
904 for (pixels = 0; pixels < width;) {
905 if (ssrc + size - src < 2) {
906 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
907 return AVERROR_INVALIDDATA;
908 }
909 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
910 if (code >= 0) {
911 code++;
912 if (pixels + code > width ||
913 ssrc + size - src < code) {
914 av_log(s->avctx, AV_LOG_ERROR,
915 "Copy went out of bounds\n");
916 return AVERROR_INVALIDDATA;
917 }
918 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
919 dst, 1, src, 0, code, pixels);
920 src += code;
921 pixels += code;
922 } else if (code != -128) { // -127..-1
923 code = (-code) + 1;
924 if (pixels + code > width) {
925 av_log(s->avctx, AV_LOG_ERROR,
926 "Run went out of bounds\n");
927 return AVERROR_INVALIDDATA;
928 }
929 c = *src++;
930 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
931 dst, 0, NULL, c, code, pixels);
932 pixels += code;
933 }
934 }
935 if (s->fill_order) {
936 int i;
937 for (i = 0; i < width; i++)
938 dst[i] = ff_reverse[dst[i]];
939 }
940 break;
941 }
942 if (is_yuv) {
943 unpack_yuv(s, p, dst, strip_start + line);
944 line += s->subsampling[1] - 1;
945 } else if (p->format == AV_PIX_FMT_GRAY12) {
946 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
947 }
948 dst += stride;
949 }
950 return 0;
951 }
952
dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame, const AVPacket *avpkt)953 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame,
954 const AVPacket *avpkt)
955 {
956 TiffContext *s = avctx->priv_data;
957 int tile_idx;
958 int tile_offset_offset, tile_offset;
959 int tile_byte_count_offset, tile_byte_count;
960 int tile_count_x, tile_count_y;
961 int tile_width, tile_length;
962 int has_width_leftover, has_height_leftover;
963 int tile_x = 0, tile_y = 0;
964 int pos_x = 0, pos_y = 0;
965 int ret;
966
967 if (s->tile_width <= 0 || s->tile_length <= 0)
968 return AVERROR_INVALIDDATA;
969
970 has_width_leftover = (s->width % s->tile_width != 0);
971 has_height_leftover = (s->height % s->tile_length != 0);
972
973 /* Calculate tile counts (round up) */
974 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
975 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
976
977 /* Iterate over the number of tiles */
978 for (tile_idx = 0; tile_idx < tile_count_x * tile_count_y; tile_idx++) {
979 tile_x = tile_idx % tile_count_x;
980 tile_y = tile_idx / tile_count_x;
981
982 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
983 tile_width = s->width % s->tile_width;
984 else
985 tile_width = s->tile_width;
986
987 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
988 tile_length = s->height % s->tile_length;
989 else
990 tile_length = s->tile_length;
991
992 /* Read tile offset */
993 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
994 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
995 tile_offset = ff_tget_long(&s->gb, s->le);
996
997 /* Read tile byte size */
998 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
999 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
1000 tile_byte_count = ff_tget_long(&s->gb, s->le);
1001
1002 /* Seek to tile data */
1003 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
1004
1005 /* Decode JPEG tile and copy it in the reference frame */
1006 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1007
1008 if (ret < 0)
1009 return ret;
1010
1011 /* Advance current positions */
1012 pos_x += tile_width;
1013 if (tile_x == tile_count_x - 1) { // If on the right edge
1014 pos_x = 0;
1015 pos_y += tile_length;
1016 }
1017 }
1018
1019 /* Frame is ready to be output */
1020 frame->pict_type = AV_PICTURE_TYPE_I;
1021 frame->key_frame = 1;
1022
1023 return avpkt->size;
1024 }
1025
init_image(TiffContext *s, AVFrame *frame)1026 static int init_image(TiffContext *s, AVFrame *frame)
1027 {
1028 int ret;
1029 int create_gray_palette = 0;
1030
1031 // make sure there is no aliasing in the following switch
1032 if (s->bpp >= 100 || s->bppcount >= 10) {
1033 av_log(s->avctx, AV_LOG_ERROR,
1034 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1035 s->bpp, s->bppcount);
1036 return AVERROR_INVALIDDATA;
1037 }
1038
1039 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1040 case 11:
1041 if (!s->palette_is_set) {
1042 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1043 break;
1044 }
1045 case 21:
1046 case 41:
1047 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1048 if (!s->palette_is_set) {
1049 create_gray_palette = 1;
1050 }
1051 break;
1052 case 81:
1053 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1054 break;
1055 case 121:
1056 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1057 break;
1058 case 10081:
1059 switch (AV_RL32(s->pattern)) {
1060 case 0x02010100:
1061 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1062 break;
1063 case 0x00010102:
1064 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1065 break;
1066 case 0x01000201:
1067 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1068 break;
1069 case 0x01020001:
1070 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1071 break;
1072 default:
1073 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1074 AV_RL32(s->pattern));
1075 return AVERROR_PATCHWELCOME;
1076 }
1077 break;
1078 case 10101:
1079 case 10121:
1080 case 10141:
1081 case 10161:
1082 switch (AV_RL32(s->pattern)) {
1083 case 0x02010100:
1084 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1085 break;
1086 case 0x00010102:
1087 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1088 break;
1089 case 0x01000201:
1090 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1091 break;
1092 case 0x01020001:
1093 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1094 break;
1095 default:
1096 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1097 AV_RL32(s->pattern));
1098 return AVERROR_PATCHWELCOME;
1099 }
1100 break;
1101 case 243:
1102 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1103 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1104 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1105 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1106 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1107 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1108 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1109 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1110 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1111 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1112 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1113 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1114 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1115 } else {
1116 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1117 return AVERROR_PATCHWELCOME;
1118 }
1119 } else
1120 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1121 break;
1122 case 161:
1123 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1124 break;
1125 case 162:
1126 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1127 break;
1128 case 322:
1129 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1130 break;
1131 case 324:
1132 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1133 break;
1134 case 405:
1135 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1136 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1137 else {
1138 av_log(s->avctx, AV_LOG_ERROR,
1139 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1140 return AVERROR_PATCHWELCOME;
1141 }
1142 break;
1143 case 483:
1144 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1145 break;
1146 case 644:
1147 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1148 break;
1149 case 1243:
1150 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1151 break;
1152 case 1324:
1153 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1154 break;
1155 case 1483:
1156 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1157 break;
1158 case 1644:
1159 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1160 break;
1161 default:
1162 av_log(s->avctx, AV_LOG_ERROR,
1163 "This format is not supported (bpp=%d, bppcount=%d)\n",
1164 s->bpp, s->bppcount);
1165 return AVERROR_INVALIDDATA;
1166 }
1167
1168 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1169 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1170 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1171 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1172 desc->nb_components < 3) {
1173 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1174 return AVERROR_INVALIDDATA;
1175 }
1176 }
1177
1178 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1179 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1180 if (ret < 0)
1181 return ret;
1182 }
1183 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1184 return ret;
1185 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1186 if (!create_gray_palette)
1187 memcpy(frame->data[1], s->palette, sizeof(s->palette));
1188 else {
1189 /* make default grayscale pal */
1190 int i;
1191 uint32_t *pal = (uint32_t *)frame->data[1];
1192 for (i = 0; i < 1<<s->bpp; i++)
1193 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1194 }
1195 }
1196 return 0;
1197 }
1198
set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)1199 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1200 {
1201 int offset = tag == TIFF_YRES ? 2 : 0;
1202 s->res[offset++] = num;
1203 s->res[offset] = den;
1204 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1205 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1206 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1207 if (num > INT64_MAX || den > INT64_MAX) {
1208 num = num >> 1;
1209 den = den >> 1;
1210 }
1211 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1212 num, den, INT32_MAX);
1213 if (!s->avctx->sample_aspect_ratio.den)
1214 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1215 }
1216 }
1217
tiff_decode_tag(TiffContext *s, AVFrame *frame)1218 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1219 {
1220 AVFrameSideData *sd;
1221 GetByteContext gb_temp;
1222 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1223 int i, start;
1224 int pos;
1225 int ret;
1226 double *dp;
1227
1228 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1229 if (ret < 0) {
1230 goto end;
1231 }
1232 if (tag <= s->last_tag)
1233 return AVERROR_INVALIDDATA;
1234
1235 // We ignore TIFF_STRIP_SIZE as it is sometimes in the logic but wrong order around TIFF_STRIP_OFFS
1236 if (tag != TIFF_STRIP_SIZE)
1237 s->last_tag = tag;
1238
1239 off = bytestream2_tell(&s->gb);
1240 if (count == 1) {
1241 switch (type) {
1242 case TIFF_BYTE:
1243 case TIFF_SHORT:
1244 case TIFF_LONG:
1245 value = ff_tget(&s->gb, type, s->le);
1246 break;
1247 case TIFF_RATIONAL:
1248 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1249 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1250 if (!value2) {
1251 av_log(s->avctx, AV_LOG_WARNING, "Invalid denominator in rational\n");
1252 value2 = 1;
1253 }
1254
1255 break;
1256 case TIFF_STRING:
1257 if (count <= 4) {
1258 break;
1259 }
1260 default:
1261 value = UINT_MAX;
1262 }
1263 }
1264
1265 switch (tag) {
1266 case TIFF_SUBFILE:
1267 s->is_thumbnail = (value != 0);
1268 break;
1269 case TIFF_WIDTH:
1270 if (value > INT_MAX)
1271 return AVERROR_INVALIDDATA;
1272 s->width = value;
1273 break;
1274 case TIFF_HEIGHT:
1275 if (value > INT_MAX)
1276 return AVERROR_INVALIDDATA;
1277 s->height = value;
1278 break;
1279 case TIFF_BPP:
1280 if (count > 5 || count <= 0) {
1281 av_log(s->avctx, AV_LOG_ERROR,
1282 "This format is not supported (bpp=%d, %d components)\n",
1283 value, count);
1284 return AVERROR_INVALIDDATA;
1285 }
1286 s->bppcount = count;
1287 if (count == 1)
1288 s->bpp = value;
1289 else {
1290 switch (type) {
1291 case TIFF_BYTE:
1292 case TIFF_SHORT:
1293 case TIFF_LONG:
1294 s->bpp = 0;
1295 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1296 return AVERROR_INVALIDDATA;
1297 for (i = 0; i < count; i++)
1298 s->bpp += ff_tget(&s->gb, type, s->le);
1299 break;
1300 default:
1301 s->bpp = -1;
1302 }
1303 }
1304 break;
1305 case TIFF_SAMPLES_PER_PIXEL:
1306 if (count != 1) {
1307 av_log(s->avctx, AV_LOG_ERROR,
1308 "Samples per pixel requires a single value, many provided\n");
1309 return AVERROR_INVALIDDATA;
1310 }
1311 if (value > 5 || value <= 0) {
1312 av_log(s->avctx, AV_LOG_ERROR,
1313 "Invalid samples per pixel %d\n", value);
1314 return AVERROR_INVALIDDATA;
1315 }
1316 if (s->bppcount == 1)
1317 s->bpp *= value;
1318 s->bppcount = value;
1319 break;
1320 case TIFF_COMPR:
1321 s->compr = value;
1322 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1323 s->predictor = 0;
1324 switch (s->compr) {
1325 case TIFF_RAW:
1326 case TIFF_PACKBITS:
1327 case TIFF_LZW:
1328 case TIFF_CCITT_RLE:
1329 break;
1330 case TIFF_G3:
1331 case TIFF_G4:
1332 s->fax_opts = 0;
1333 break;
1334 case TIFF_DEFLATE:
1335 case TIFF_ADOBE_DEFLATE:
1336 #if CONFIG_ZLIB
1337 break;
1338 #else
1339 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1340 return AVERROR(ENOSYS);
1341 #endif
1342 case TIFF_JPEG:
1343 case TIFF_NEWJPEG:
1344 s->is_jpeg = 1;
1345 break;
1346 case TIFF_LZMA:
1347 #if CONFIG_LZMA
1348 break;
1349 #else
1350 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1351 return AVERROR(ENOSYS);
1352 #endif
1353 default:
1354 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1355 s->compr);
1356 return AVERROR_INVALIDDATA;
1357 }
1358 break;
1359 case TIFF_ROWSPERSTRIP:
1360 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1361 value = s->height;
1362 s->rps = FFMIN(value, s->height);
1363 break;
1364 case TIFF_STRIP_OFFS:
1365 if (count == 1) {
1366 if (value > INT_MAX) {
1367 av_log(s->avctx, AV_LOG_ERROR,
1368 "strippos %u too large\n", value);
1369 return AVERROR_INVALIDDATA;
1370 }
1371 s->strippos = 0;
1372 s->stripoff = value;
1373 } else
1374 s->strippos = off;
1375 s->strips = count;
1376 if (s->strips == 1)
1377 s->rps = s->height;
1378 s->sot = type;
1379 break;
1380 case TIFF_STRIP_SIZE:
1381 if (count == 1) {
1382 if (value > INT_MAX) {
1383 av_log(s->avctx, AV_LOG_ERROR,
1384 "stripsize %u too large\n", value);
1385 return AVERROR_INVALIDDATA;
1386 }
1387 s->stripsizesoff = 0;
1388 s->stripsize = value;
1389 s->strips = 1;
1390 } else {
1391 s->stripsizesoff = off;
1392 }
1393 s->strips = count;
1394 s->sstype = type;
1395 break;
1396 case TIFF_XRES:
1397 case TIFF_YRES:
1398 set_sar(s, tag, value, value2);
1399 break;
1400 case TIFF_TILE_OFFSETS:
1401 s->tile_offsets_offset = off;
1402 s->is_tiled = 1;
1403 break;
1404 case TIFF_TILE_BYTE_COUNTS:
1405 s->tile_byte_counts_offset = off;
1406 break;
1407 case TIFF_TILE_LENGTH:
1408 if (value > INT_MAX)
1409 return AVERROR_INVALIDDATA;
1410 s->tile_length = value;
1411 break;
1412 case TIFF_TILE_WIDTH:
1413 if (value > INT_MAX)
1414 return AVERROR_INVALIDDATA;
1415 s->tile_width = value;
1416 break;
1417 case TIFF_PREDICTOR:
1418 if (value > INT_MAX)
1419 return AVERROR_INVALIDDATA;
1420 s->predictor = value;
1421 break;
1422 case TIFF_SUB_IFDS:
1423 if (count == 1)
1424 s->sub_ifd = value;
1425 else if (count > 1)
1426 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1427 break;
1428 case DNG_LINEARIZATION_TABLE:
1429 if (count < 1 || count > FF_ARRAY_ELEMS(s->dng_lut))
1430 return AVERROR_INVALIDDATA;
1431 for (int i = 0; i < count; i++)
1432 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1433 break;
1434 case DNG_BLACK_LEVEL:
1435 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1436 if (type == TIFF_RATIONAL) {
1437 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1438 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1439 if (!value2) {
1440 av_log(s->avctx, AV_LOG_WARNING, "Invalid black level denominator\n");
1441 value2 = 1;
1442 }
1443
1444 s->black_level = value / value2;
1445 } else
1446 s->black_level = ff_tget(&s->gb, type, s->le);
1447 av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n");
1448 } else {
1449 s->black_level = value / value2;
1450 }
1451 break;
1452 case DNG_WHITE_LEVEL:
1453 s->white_level = value;
1454 break;
1455 case TIFF_CFA_PATTERN_DIM:
1456 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1457 ff_tget(&s->gb, type, s->le) != 2)) {
1458 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1459 return AVERROR_INVALIDDATA;
1460 }
1461 break;
1462 case TIFF_CFA_PATTERN:
1463 s->is_bayer = 1;
1464 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1465 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1466 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1467 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1468 break;
1469 case TIFF_PHOTOMETRIC:
1470 switch (value) {
1471 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1472 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1473 case TIFF_PHOTOMETRIC_RGB:
1474 case TIFF_PHOTOMETRIC_PALETTE:
1475 case TIFF_PHOTOMETRIC_SEPARATED:
1476 case TIFF_PHOTOMETRIC_YCBCR:
1477 case TIFF_PHOTOMETRIC_CFA:
1478 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1479 s->photometric = value;
1480 break;
1481 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1482 case TIFF_PHOTOMETRIC_CIE_LAB:
1483 case TIFF_PHOTOMETRIC_ICC_LAB:
1484 case TIFF_PHOTOMETRIC_ITU_LAB:
1485 case TIFF_PHOTOMETRIC_LOG_L:
1486 case TIFF_PHOTOMETRIC_LOG_LUV:
1487 avpriv_report_missing_feature(s->avctx,
1488 "PhotometricInterpretation 0x%04X",
1489 value);
1490 return AVERROR_PATCHWELCOME;
1491 default:
1492 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1493 "unknown\n", value);
1494 return AVERROR_INVALIDDATA;
1495 }
1496 break;
1497 case TIFF_FILL_ORDER:
1498 if (value < 1 || value > 2) {
1499 av_log(s->avctx, AV_LOG_ERROR,
1500 "Unknown FillOrder value %d, trying default one\n", value);
1501 value = 1;
1502 }
1503 s->fill_order = value - 1;
1504 break;
1505 case TIFF_PAL: {
1506 GetByteContext pal_gb[3];
1507 off = type_sizes[type];
1508 if (count / 3 > 256 ||
1509 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1510 return AVERROR_INVALIDDATA;
1511
1512 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1513 bytestream2_skip(&pal_gb[1], count / 3 * off);
1514 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1515
1516 off = (type_sizes[type] - 1) << 3;
1517 if (off > 31U) {
1518 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1519 return AVERROR_INVALIDDATA;
1520 }
1521
1522 for (i = 0; i < count / 3; i++) {
1523 uint32_t p = 0xFF000000;
1524 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1525 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1526 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1527 s->palette[i] = p;
1528 }
1529 s->palette_is_set = 1;
1530 break;
1531 }
1532 case TIFF_PLANAR:
1533 s->planar = value == 2;
1534 break;
1535 case TIFF_YCBCR_SUBSAMPLING:
1536 if (count != 2) {
1537 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1538 return AVERROR_INVALIDDATA;
1539 }
1540 for (i = 0; i < count; i++) {
1541 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1542 if (s->subsampling[i] <= 0) {
1543 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1544 s->subsampling[i] = 1;
1545 return AVERROR_INVALIDDATA;
1546 }
1547 }
1548 break;
1549 case TIFF_T4OPTIONS:
1550 if (s->compr == TIFF_G3) {
1551 if (value > INT_MAX)
1552 return AVERROR_INVALIDDATA;
1553 s->fax_opts = value;
1554 }
1555 break;
1556 case TIFF_T6OPTIONS:
1557 if (s->compr == TIFF_G4) {
1558 if (value > INT_MAX)
1559 return AVERROR_INVALIDDATA;
1560 s->fax_opts = value;
1561 }
1562 break;
1563 #define ADD_METADATA(count, name, sep)\
1564 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1565 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1566 goto end;\
1567 }
1568 case TIFF_MODEL_PIXEL_SCALE:
1569 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1570 break;
1571 case TIFF_MODEL_TRANSFORMATION:
1572 ADD_METADATA(count, "ModelTransformationTag", NULL);
1573 break;
1574 case TIFF_MODEL_TIEPOINT:
1575 ADD_METADATA(count, "ModelTiepointTag", NULL);
1576 break;
1577 case TIFF_GEO_KEY_DIRECTORY:
1578 if (s->geotag_count) {
1579 avpriv_request_sample(s->avctx, "Multiple geo key directories");
1580 return AVERROR_INVALIDDATA;
1581 }
1582 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1583 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1584 s->geotag_count = ff_tget_short(&s->gb, s->le);
1585 if (s->geotag_count > count / 4 - 1) {
1586 s->geotag_count = count / 4 - 1;
1587 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1588 }
1589 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1590 || s->geotag_count == 0) {
1591 s->geotag_count = 0;
1592 return -1;
1593 }
1594 s->geotags = av_calloc(s->geotag_count, sizeof(*s->geotags));
1595 if (!s->geotags) {
1596 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1597 s->geotag_count = 0;
1598 goto end;
1599 }
1600 for (i = 0; i < s->geotag_count; i++) {
1601 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1602 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1603 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1604
1605 if (!s->geotags[i].type)
1606 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
1607 else
1608 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
1609 }
1610 break;
1611 case TIFF_GEO_DOUBLE_PARAMS:
1612 if (count >= INT_MAX / sizeof(int64_t))
1613 return AVERROR_INVALIDDATA;
1614 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1615 return AVERROR_INVALIDDATA;
1616 dp = av_malloc_array(count, sizeof(double));
1617 if (!dp) {
1618 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1619 goto end;
1620 }
1621 for (i = 0; i < count; i++)
1622 dp[i] = ff_tget_double(&s->gb, s->le);
1623 for (i = 0; i < s->geotag_count; i++) {
1624 if (s->geotags[i].type == TIFF_GEO_DOUBLE_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 if (s->geotags[i].val) {
1629 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1630 } else {
1631 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1632 if (!ap) {
1633 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1634 av_freep(&dp);
1635 return AVERROR(ENOMEM);
1636 }
1637 s->geotags[i].val = ap;
1638 }
1639 }
1640 }
1641 av_freep(&dp);
1642 break;
1643 case TIFF_GEO_ASCII_PARAMS:
1644 pos = bytestream2_tell(&s->gb);
1645 for (i = 0; i < s->geotag_count; i++) {
1646 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1647 if (s->geotags[i].count == 0
1648 || s->geotags[i].offset + s->geotags[i].count > count) {
1649 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1650 } else {
1651 char *ap;
1652
1653 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1654 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1655 return AVERROR_INVALIDDATA;
1656 if (s->geotags[i].val)
1657 return AVERROR_INVALIDDATA;
1658 ap = av_malloc(s->geotags[i].count);
1659 if (!ap) {
1660 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1661 return AVERROR(ENOMEM);
1662 }
1663 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1664 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1665 s->geotags[i].val = ap;
1666 }
1667 }
1668 }
1669 break;
1670 case TIFF_ICC_PROFILE:
1671 gb_temp = s->gb;
1672 bytestream2_seek(&gb_temp, SEEK_SET, off);
1673
1674 if (bytestream2_get_bytes_left(&gb_temp) < count)
1675 return AVERROR_INVALIDDATA;
1676
1677 sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count);
1678 if (!sd)
1679 return AVERROR(ENOMEM);
1680
1681 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1682 break;
1683 case TIFF_ARTIST:
1684 ADD_METADATA(count, "artist", NULL);
1685 break;
1686 case TIFF_COPYRIGHT:
1687 ADD_METADATA(count, "copyright", NULL);
1688 break;
1689 case TIFF_DATE:
1690 ADD_METADATA(count, "date", NULL);
1691 break;
1692 case TIFF_DOCUMENT_NAME:
1693 ADD_METADATA(count, "document_name", NULL);
1694 break;
1695 case TIFF_HOST_COMPUTER:
1696 ADD_METADATA(count, "computer", NULL);
1697 break;
1698 case TIFF_IMAGE_DESCRIPTION:
1699 ADD_METADATA(count, "description", NULL);
1700 break;
1701 case TIFF_MAKE:
1702 ADD_METADATA(count, "make", NULL);
1703 break;
1704 case TIFF_MODEL:
1705 ADD_METADATA(count, "model", NULL);
1706 break;
1707 case TIFF_PAGE_NAME:
1708 ADD_METADATA(count, "page_name", NULL);
1709 break;
1710 case TIFF_PAGE_NUMBER:
1711 ADD_METADATA(count, "page_number", " / ");
1712 // need to seek back to re-read the page number
1713 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1714 // read the page number
1715 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1716 // get back to where we were before the previous seek
1717 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1718 break;
1719 case TIFF_SOFTWARE_NAME:
1720 ADD_METADATA(count, "software", NULL);
1721 break;
1722 case DNG_VERSION:
1723 if (count == 4) {
1724 unsigned int ver[4];
1725 ver[0] = ff_tget(&s->gb, type, s->le);
1726 ver[1] = ff_tget(&s->gb, type, s->le);
1727 ver[2] = ff_tget(&s->gb, type, s->le);
1728 ver[3] = ff_tget(&s->gb, type, s->le);
1729
1730 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1731 ver[0], ver[1], ver[2], ver[3]);
1732
1733 tiff_set_type(s, TIFF_TYPE_DNG);
1734 }
1735 break;
1736 case CINEMADNG_TIME_CODES:
1737 case CINEMADNG_FRAME_RATE:
1738 case CINEMADNG_T_STOP:
1739 case CINEMADNG_REEL_NAME:
1740 case CINEMADNG_CAMERA_LABEL:
1741 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1742 break;
1743 default:
1744 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1745 av_log(s->avctx, AV_LOG_ERROR,
1746 "Unknown or unsupported tag %d/0x%0X\n",
1747 tag, tag);
1748 return AVERROR_INVALIDDATA;
1749 }
1750 }
1751 end:
1752 if (s->bpp > 64U) {
1753 av_log(s->avctx, AV_LOG_ERROR,
1754 "This format is not supported (bpp=%d, %d components)\n",
1755 s->bpp, count);
1756 s->bpp = 0;
1757 return AVERROR_INVALIDDATA;
1758 }
1759 bytestream2_seek(&s->gb, start, SEEK_SET);
1760 return 0;
1761 }
1762
decode_frame(AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)1763 static int decode_frame(AVCodecContext *avctx, AVFrame *p,
1764 int *got_frame, AVPacket *avpkt)
1765 {
1766 TiffContext *const s = avctx->priv_data;
1767 unsigned off, last_off = 0;
1768 int le, ret, plane, planes;
1769 int i, j, entries, stride;
1770 unsigned soff, ssize;
1771 uint8_t *dst;
1772 GetByteContext stripsizes;
1773 GetByteContext stripdata;
1774 int retry_for_subifd, retry_for_page;
1775 int is_dng;
1776 int has_tile_bits, has_strip_bits;
1777
1778 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1779
1780 // parse image header
1781 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1782 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1783 return ret;
1784 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1785 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1786 return AVERROR_INVALIDDATA;
1787 }
1788 s->le = le;
1789 // TIFF_BPP is not a required tag and defaults to 1
1790
1791 s->tiff_type = TIFF_TYPE_TIFF;
1792 again:
1793 s->is_thumbnail = 0;
1794 s->bppcount = s->bpp = 1;
1795 s->photometric = TIFF_PHOTOMETRIC_NONE;
1796 s->compr = TIFF_RAW;
1797 s->fill_order = 0;
1798 s->white_level = 0;
1799 s->is_bayer = 0;
1800 s->is_tiled = 0;
1801 s->is_jpeg = 0;
1802 s->cur_page = 0;
1803 s->last_tag = 0;
1804
1805 for (i = 0; i < 65536; i++)
1806 s->dng_lut[i] = i;
1807
1808 free_geotags(s);
1809
1810 // Reset these offsets so we can tell if they were set this frame
1811 s->stripsizesoff = s->strippos = 0;
1812 /* parse image file directory */
1813 bytestream2_seek(&s->gb, off, SEEK_SET);
1814 entries = ff_tget_short(&s->gb, le);
1815 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1816 return AVERROR_INVALIDDATA;
1817 for (i = 0; i < entries; i++) {
1818 if ((ret = tiff_decode_tag(s, p)) < 0)
1819 return ret;
1820 }
1821
1822 if (s->get_thumbnail && !s->is_thumbnail) {
1823 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1824 return AVERROR_EOF;
1825 }
1826
1827 /** whether we should process this IFD's SubIFD */
1828 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1829 /** whether we should process this multi-page IFD's next page */
1830 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1831
1832 if (retry_for_page) {
1833 // set offset to the next IFD
1834 off = ff_tget_long(&s->gb, le);
1835 } else if (retry_for_subifd) {
1836 // set offset to the SubIFD
1837 off = s->sub_ifd;
1838 }
1839
1840 if (retry_for_subifd || retry_for_page) {
1841 if (!off) {
1842 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1843 return AVERROR_INVALIDDATA;
1844 }
1845 if (off <= last_off) {
1846 avpriv_request_sample(s->avctx, "non increasing IFD offset");
1847 return AVERROR_INVALIDDATA;
1848 }
1849 last_off = off;
1850 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1851 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1852 return AVERROR_INVALIDDATA;
1853 }
1854 s->sub_ifd = 0;
1855 goto again;
1856 }
1857
1858 /* At this point we've decided on which (Sub)IFD to process */
1859
1860 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1861
1862 for (i = 0; i<s->geotag_count; i++) {
1863 const char *keyname = get_geokey_name(s->geotags[i].key);
1864 if (!keyname) {
1865 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1866 continue;
1867 }
1868 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1869 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1870 continue;
1871 }
1872 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1873 if (ret<0) {
1874 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1875 return ret;
1876 }
1877 }
1878
1879 if (is_dng) {
1880 int bps;
1881
1882 if (s->bpp % s->bppcount)
1883 return AVERROR_INVALIDDATA;
1884 bps = s->bpp / s->bppcount;
1885 if (bps < 8 || bps > 32)
1886 return AVERROR_INVALIDDATA;
1887
1888 if (s->white_level == 0)
1889 s->white_level = (1LL << bps) - 1; /* Default value as per the spec */
1890
1891 if (s->white_level <= s->black_level) {
1892 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1893 s->black_level, s->white_level);
1894 return AVERROR_INVALIDDATA;
1895 }
1896
1897 if (s->planar)
1898 return AVERROR_PATCHWELCOME;
1899 }
1900
1901 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1902 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1903 return AVERROR_INVALIDDATA;
1904 }
1905
1906 has_tile_bits = s->is_tiled || s->tile_byte_counts_offset || s->tile_offsets_offset || s->tile_width || s->tile_length;
1907 has_strip_bits = s->strippos || s->strips || s->stripoff || s->rps || s->sot || s->sstype || s->stripsize || s->stripsizesoff;
1908
1909 if (has_tile_bits && has_strip_bits) {
1910 int tiled_dng = s->is_tiled && is_dng;
1911 av_log(avctx, tiled_dng ? AV_LOG_WARNING : AV_LOG_ERROR, "Tiled TIFF is not allowed to strip\n");
1912 if (!tiled_dng)
1913 return AVERROR_INVALIDDATA;
1914 }
1915
1916 /* now we have the data and may start decoding */
1917 if ((ret = init_image(s, p)) < 0)
1918 return ret;
1919
1920 if (!s->is_tiled || has_strip_bits) {
1921 if (s->strips == 1 && !s->stripsize) {
1922 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1923 s->stripsize = avpkt->size - s->stripoff;
1924 }
1925
1926 if (s->stripsizesoff) {
1927 if (s->stripsizesoff >= (unsigned)avpkt->size)
1928 return AVERROR_INVALIDDATA;
1929 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1930 avpkt->size - s->stripsizesoff);
1931 }
1932 if (s->strippos) {
1933 if (s->strippos >= (unsigned)avpkt->size)
1934 return AVERROR_INVALIDDATA;
1935 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1936 avpkt->size - s->strippos);
1937 }
1938
1939 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1940 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1941 return AVERROR_INVALIDDATA;
1942 }
1943 }
1944
1945 if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW ||
1946 s->photometric == TIFF_PHOTOMETRIC_CFA) {
1947 p->color_trc = AVCOL_TRC_LINEAR;
1948 } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) {
1949 p->color_trc = AVCOL_TRC_GAMMA22;
1950 }
1951
1952 /* Handle DNG images with JPEG-compressed tiles */
1953
1954 if (is_dng && s->is_tiled) {
1955 if (!s->is_jpeg) {
1956 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1957 return AVERROR_PATCHWELCOME;
1958 } else if (!s->is_bayer) {
1959 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1960 return AVERROR_PATCHWELCOME;
1961 } else {
1962 if ((ret = dng_decode_tiles(avctx, p, avpkt)) > 0)
1963 *got_frame = 1;
1964 return ret;
1965 }
1966 }
1967
1968 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1969
1970 planes = s->planar ? s->bppcount : 1;
1971 for (plane = 0; plane < planes; plane++) {
1972 uint8_t *five_planes = NULL;
1973 int remaining = avpkt->size;
1974 int decoded_height;
1975 stride = p->linesize[plane];
1976 dst = p->data[plane];
1977 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1978 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1979 stride = stride * 5 / 4;
1980 five_planes =
1981 dst = av_malloc(stride * s->height);
1982 if (!dst)
1983 return AVERROR(ENOMEM);
1984 }
1985 for (i = 0; i < s->height; i += s->rps) {
1986 if (i)
1987 dst += s->rps * stride;
1988 if (s->stripsizesoff)
1989 ssize = ff_tget(&stripsizes, s->sstype, le);
1990 else
1991 ssize = s->stripsize;
1992
1993 if (s->strippos)
1994 soff = ff_tget(&stripdata, s->sot, le);
1995 else
1996 soff = s->stripoff;
1997
1998 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
1999 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
2000 av_freep(&five_planes);
2001 return AVERROR_INVALIDDATA;
2002 }
2003 remaining -= ssize;
2004 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
2005 FFMIN(s->rps, s->height - i))) < 0) {
2006 if (avctx->err_recognition & AV_EF_EXPLODE) {
2007 av_freep(&five_planes);
2008 return ret;
2009 }
2010 break;
2011 }
2012 }
2013 decoded_height = FFMIN(i, s->height);
2014
2015 if (s->predictor == 2) {
2016 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
2017 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
2018 return AVERROR_PATCHWELCOME;
2019 }
2020 dst = five_planes ? five_planes : p->data[plane];
2021 soff = s->bpp >> 3;
2022 if (s->planar)
2023 soff = FFMAX(soff / s->bppcount, 1);
2024 ssize = s->width * soff;
2025 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
2026 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
2027 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
2028 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2029 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2030 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2031 for (i = 0; i < decoded_height; i++) {
2032 for (j = soff; j < ssize; j += 2)
2033 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2034 dst += stride;
2035 }
2036 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2037 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2038 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2039 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2040 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2041 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2042 for (i = 0; i < decoded_height; i++) {
2043 for (j = soff; j < ssize; j += 2)
2044 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2045 dst += stride;
2046 }
2047 } else {
2048 for (i = 0; i < decoded_height; i++) {
2049 for (j = soff; j < ssize; j++)
2050 dst[j] += dst[j - soff];
2051 dst += stride;
2052 }
2053 }
2054 }
2055
2056 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2057 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2058 dst = p->data[plane];
2059 for (i = 0; i < s->height; i++) {
2060 for (j = 0; j < stride; j++)
2061 dst[j] = c - dst[j];
2062 dst += stride;
2063 }
2064 }
2065
2066 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2067 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2068 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2069 uint8_t *src = five_planes ? five_planes : p->data[plane];
2070 dst = p->data[plane];
2071 for (i = 0; i < s->height; i++) {
2072 for (j = 0; j < s->width; j++) {
2073 int k = 255 - src[x * j + 3];
2074 int r = (255 - src[x * j ]) * k;
2075 int g = (255 - src[x * j + 1]) * k;
2076 int b = (255 - src[x * j + 2]) * k;
2077 dst[4 * j ] = r * 257 >> 16;
2078 dst[4 * j + 1] = g * 257 >> 16;
2079 dst[4 * j + 2] = b * 257 >> 16;
2080 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2081 }
2082 src += stride;
2083 dst += p->linesize[plane];
2084 }
2085 av_freep(&five_planes);
2086 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2087 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2088 dst = p->data[plane];
2089 for (i = 0; i < s->height; i++) {
2090 for (j = 0; j < s->width; j++) {
2091 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2092 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2093 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2094 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2095 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2096 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2097 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2098 AV_WB16(dst + 8 * j + 6, 65535);
2099 }
2100 dst += p->linesize[plane];
2101 }
2102 }
2103 }
2104
2105 if (s->planar && s->bppcount > 2) {
2106 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2107 FFSWAP(int, p->linesize[0], p->linesize[2]);
2108 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2109 FFSWAP(int, p->linesize[0], p->linesize[1]);
2110 }
2111
2112 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2113 uint16_t *dst = (uint16_t *)p->data[0];
2114 for (i = 0; i < s->height; i++) {
2115 for (j = 0; j < s->width; j++)
2116 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2117 dst += stride / 2;
2118 }
2119 }
2120
2121 *got_frame = 1;
2122
2123 return avpkt->size;
2124 }
2125
tiff_init(AVCodecContext *avctx)2126 static av_cold int tiff_init(AVCodecContext *avctx)
2127 {
2128 TiffContext *s = avctx->priv_data;
2129 const AVCodec *codec;
2130 int ret;
2131
2132 s->width = 0;
2133 s->height = 0;
2134 s->subsampling[0] =
2135 s->subsampling[1] = 1;
2136 s->avctx = avctx;
2137 ff_lzw_decode_open(&s->lzw);
2138 if (!s->lzw)
2139 return AVERROR(ENOMEM);
2140 ff_ccitt_unpack_init();
2141
2142 /* Allocate JPEG frame */
2143 s->jpgframe = av_frame_alloc();
2144 s->jpkt = av_packet_alloc();
2145 if (!s->jpgframe || !s->jpkt)
2146 return AVERROR(ENOMEM);
2147
2148 /* Prepare everything needed for JPEG decoding */
2149 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2150 if (!codec)
2151 return AVERROR_BUG;
2152 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2153 if (!s->avctx_mjpeg)
2154 return AVERROR(ENOMEM);
2155 s->avctx_mjpeg->flags = avctx->flags;
2156 s->avctx_mjpeg->flags2 = avctx->flags2;
2157 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2158 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2159 s->avctx_mjpeg->max_pixels = avctx->max_pixels;
2160 ret = avcodec_open2(s->avctx_mjpeg, codec, NULL);
2161 if (ret < 0) {
2162 return ret;
2163 }
2164
2165 return 0;
2166 }
2167
tiff_end(AVCodecContext *avctx)2168 static av_cold int tiff_end(AVCodecContext *avctx)
2169 {
2170 TiffContext *const s = avctx->priv_data;
2171
2172 free_geotags(s);
2173
2174 ff_lzw_decode_close(&s->lzw);
2175 av_freep(&s->deinvert_buf);
2176 s->deinvert_buf_size = 0;
2177 av_freep(&s->yuv_line);
2178 s->yuv_line_size = 0;
2179 av_frame_free(&s->jpgframe);
2180 av_packet_free(&s->jpkt);
2181 avcodec_free_context(&s->avctx_mjpeg);
2182 return 0;
2183 }
2184
2185 #define OFFSET(x) offsetof(TiffContext, x)
2186 static const AVOption tiff_options[] = {
2187 { "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 },
2188 { "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 },
2189 { "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 },
2190 { NULL },
2191 };
2192
2193 static const AVClass tiff_decoder_class = {
2194 .class_name = "TIFF decoder",
2195 .item_name = av_default_item_name,
2196 .option = tiff_options,
2197 .version = LIBAVUTIL_VERSION_INT,
2198 };
2199
2200 const FFCodec ff_tiff_decoder = {
2201 .p.name = "tiff",
2202 .p.long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2203 .p.type = AVMEDIA_TYPE_VIDEO,
2204 .p.id = AV_CODEC_ID_TIFF,
2205 .priv_data_size = sizeof(TiffContext),
2206 .init = tiff_init,
2207 .close = tiff_end,
2208 FF_CODEC_DECODE_CB(decode_frame),
2209 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2210 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
2211 .p.priv_class = &tiff_decoder_class,
2212 };
2213