1 /*
2 * Copyright (c) 2006 Konstantin Shishkov
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * TIFF image decoder
24 * @author Konstantin Shishkov
25 */
26
27 #include "config.h"
28 #if CONFIG_ZLIB
29 #include <zlib.h>
30 #endif
31 #if CONFIG_LZMA
32 #define LZMA_API_STATIC
33 #include <lzma.h>
34 #endif
35
36 #include "libavutil/attributes.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/error.h"
39 #include "libavutil/intreadwrite.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/opt.h"
42 #include "avcodec.h"
43 #include "bytestream.h"
44 #include "faxcompr.h"
45 #include "internal.h"
46 #include "lzw.h"
47 #include "mathops.h"
48 #include "tiff.h"
49 #include "tiff_data.h"
50 #include "mjpegdec.h"
51 #include "thread.h"
52 #include "get_bits.h"
53
54 typedef struct TiffContext {
55 AVClass *class;
56 AVCodecContext *avctx;
57 GetByteContext gb;
58
59 /* JPEG decoding for DNG */
60 AVCodecContext *avctx_mjpeg; // wrapper context for MJPEG
61 AVPacket *jpkt; // encoded JPEG tile
62 AVFrame *jpgframe; // decoded JPEG tile
63
64 int get_subimage;
65 uint16_t get_page;
66 int get_thumbnail;
67
68 enum TiffType tiff_type;
69 int width, height;
70 unsigned int bpp, bppcount;
71 uint32_t palette[256];
72 int palette_is_set;
73 int le;
74 enum TiffCompr compr;
75 enum TiffPhotometric photometric;
76 int planar;
77 int subsampling[2];
78 int fax_opts;
79 int predictor;
80 int fill_order;
81 uint32_t res[4];
82 int is_thumbnail;
83 unsigned last_tag;
84
85 int is_bayer;
86 uint8_t pattern[4];
87 unsigned black_level;
88 unsigned white_level;
89 uint16_t dng_lut[65536];
90
91 uint32_t sub_ifd;
92 uint16_t cur_page;
93
94 int strips, rps, sstype;
95 int sot;
96 int stripsizesoff, stripsize, stripoff, strippos;
97 LZWState *lzw;
98
99 /* Tile support */
100 int is_tiled;
101 int tile_byte_counts_offset, tile_offsets_offset;
102 int tile_width, tile_length;
103 int tile_count;
104
105 int is_jpeg;
106
107 uint8_t *deinvert_buf;
108 int deinvert_buf_size;
109 uint8_t *yuv_line;
110 unsigned int yuv_line_size;
111 uint8_t *fax_buffer;
112 unsigned int fax_buffer_size;
113
114 int geotag_count;
115 TiffGeoTag *geotags;
116 } TiffContext;
117
tiff_set_type(TiffContext * s,enum TiffType tiff_type)118 static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
119 if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
120 s->tiff_type = tiff_type;
121 }
122
free_geotags(TiffContext * const s)123 static void free_geotags(TiffContext *const s)
124 {
125 int i;
126 for (i = 0; i < s->geotag_count; i++) {
127 if (s->geotags[i].val)
128 av_freep(&s->geotags[i].val);
129 }
130 av_freep(&s->geotags);
131 s->geotag_count = 0;
132 }
133
134 #define RET_GEOKEY(TYPE, array, element)\
135 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
136 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_name_type_map))\
137 return tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
138
get_geokey_name(int key)139 static const char *get_geokey_name(int key)
140 {
141 RET_GEOKEY(VERT, vert, name);
142 RET_GEOKEY(PROJ, proj, name);
143 RET_GEOKEY(GEOG, geog, name);
144 RET_GEOKEY(CONF, conf, name);
145
146 return NULL;
147 }
148
get_geokey_type(int key)149 static int get_geokey_type(int key)
150 {
151 RET_GEOKEY(VERT, vert, type);
152 RET_GEOKEY(PROJ, proj, type);
153 RET_GEOKEY(GEOG, geog, type);
154 RET_GEOKEY(CONF, conf, type);
155
156 return AVERROR_INVALIDDATA;
157 }
158
cmp_id_key(const void * id,const void * k)159 static int cmp_id_key(const void *id, const void *k)
160 {
161 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
162 }
163
search_keyval(const TiffGeoTagKeyName * keys,int n,int id)164 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
165 {
166 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
167 if(r)
168 return r->name;
169
170 return NULL;
171 }
172
get_geokey_val(int key,int val)173 static char *get_geokey_val(int key, int val)
174 {
175 char *ap;
176
177 if (val == TIFF_GEO_KEY_UNDEFINED)
178 return av_strdup("undefined");
179 if (val == TIFF_GEO_KEY_USER_DEFINED)
180 return av_strdup("User-Defined");
181
182 #define RET_GEOKEY_VAL(TYPE, array)\
183 if (val >= TIFF_##TYPE##_OFFSET &&\
184 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_codes))\
185 return av_strdup(tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
186
187 switch (key) {
188 case TIFF_GT_MODEL_TYPE_GEOKEY:
189 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
190 break;
191 case TIFF_GT_RASTER_TYPE_GEOKEY:
192 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
193 break;
194 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
195 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
196 case TIFF_VERTICAL_UNITS_GEOKEY:
197 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
198 break;
199 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
200 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
201 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
202 break;
203 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
204 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
205 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
206 break;
207 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
208 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
209 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
210 break;
211 case TIFF_GEOG_ELLIPSOID_GEOKEY:
212 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
213 break;
214 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
215 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
216 break;
217 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
218 ap = av_strdup(search_keyval(tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(tiff_proj_cs_type_codes), val));
219 if(ap) return ap;
220 break;
221 case TIFF_PROJECTION_GEOKEY:
222 ap = av_strdup(search_keyval(tiff_projection_codes, FF_ARRAY_ELEMS(tiff_projection_codes), val));
223 if(ap) return ap;
224 break;
225 case TIFF_PROJ_COORD_TRANS_GEOKEY:
226 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
227 break;
228 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
229 RET_GEOKEY_VAL(VERT_CS, vert_cs);
230 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
231 break;
232
233 }
234
235 ap = av_malloc(14);
236 if (ap)
237 snprintf(ap, 14, "Unknown-%d", val);
238 return ap;
239 }
240
doubles2str(double * dp,int count,const char * sep)241 static char *doubles2str(double *dp, int count, const char *sep)
242 {
243 int i;
244 char *ap, *ap0;
245 uint64_t component_len;
246 if (!sep) sep = ", ";
247 component_len = 24LL + strlen(sep);
248 if (count >= (INT_MAX - 1)/component_len)
249 return NULL;
250 ap = av_malloc(component_len * count + 1);
251 if (!ap)
252 return NULL;
253 ap0 = ap;
254 ap[0] = '\0';
255 for (i = 0; i < count; i++) {
256 unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep);
257 if(l >= component_len) {
258 av_free(ap0);
259 return NULL;
260 }
261 ap += l;
262 }
263 ap0[strlen(ap0) - strlen(sep)] = '\0';
264 return ap0;
265 }
266
add_metadata(int count,int type,const char * name,const char * sep,TiffContext * s,AVFrame * frame)267 static int add_metadata(int count, int type,
268 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
269 {
270 switch(type) {
271 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, &frame->metadata);
272 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata);
273 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata);
274 default : return AVERROR_INVALIDDATA;
275 };
276 }
277
278 /**
279 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
280 */
dng_process_color16(uint16_t value,const uint16_t * lut,uint16_t black_level,float scale_factor)281 static uint16_t av_always_inline dng_process_color16(uint16_t value,
282 const uint16_t *lut,
283 uint16_t black_level,
284 float scale_factor)
285 {
286 float value_norm;
287
288 // Lookup table lookup
289 if (lut)
290 value = lut[value];
291
292 // Black level subtraction
293 value = av_clip_uint16_c((unsigned)value - black_level);
294
295 // Color scaling
296 value_norm = (float)value * scale_factor;
297
298 value = av_clip_uint16_c(value_norm * 65535);
299
300 return value;
301 }
302
dng_process_color8(uint16_t value,const uint16_t * lut,uint16_t black_level,float scale_factor)303 static uint16_t av_always_inline dng_process_color8(uint16_t value,
304 const uint16_t *lut,
305 uint16_t black_level,
306 float scale_factor)
307 {
308 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
309 }
310
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)311 static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
312 const uint8_t *src, int src_stride, int width, int height,
313 int is_single_comp, int is_u16)
314 {
315 int line, col;
316 float scale_factor;
317
318 scale_factor = 1.0f / (s->white_level - s->black_level);
319
320 if (is_single_comp) {
321 if (!is_u16)
322 return; /* <= 8bpp unsupported */
323
324 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
325 (split vertically in the middle). */
326 for (line = 0; line < height / 2; line++) {
327 uint16_t *dst_u16 = (uint16_t *)dst;
328 uint16_t *src_u16 = (uint16_t *)src;
329
330 /* Blit first half of input row row to initial row of output */
331 for (col = 0; col < width; col++)
332 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
333
334 /* Advance the destination pointer by a row (source pointer remains in the same place) */
335 dst += dst_stride * sizeof(uint16_t);
336 dst_u16 = (uint16_t *)dst;
337
338 /* Blit second half of input row row to next row of output */
339 for (col = 0; col < width; col++)
340 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
341
342 dst += dst_stride * sizeof(uint16_t);
343 src += src_stride * sizeof(uint16_t);
344 }
345 } else {
346 /* Input and output image are the same size and the MJpeg decoder has done per-component
347 deinterleaving, so blitting here is straightforward. */
348 if (is_u16) {
349 for (line = 0; line < height; line++) {
350 uint16_t *dst_u16 = (uint16_t *)dst;
351 uint16_t *src_u16 = (uint16_t *)src;
352
353 for (col = 0; col < width; col++)
354 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
355
356 dst += dst_stride * sizeof(uint16_t);
357 src += src_stride * sizeof(uint16_t);
358 }
359 } else {
360 for (line = 0; line < height; line++) {
361 uint8_t *dst_u8 = dst;
362 const uint8_t *src_u8 = src;
363
364 for (col = 0; col < width; col++)
365 *dst_u8++ = dng_process_color8(*src_u8++, s->dng_lut, s->black_level, scale_factor);
366
367 dst += dst_stride;
368 src += src_stride;
369 }
370 }
371 }
372 }
373
horizontal_fill(TiffContext * s,unsigned int bpp,uint8_t * dst,int usePtr,const uint8_t * src,uint8_t c,int width,int offset)374 static void av_always_inline horizontal_fill(TiffContext *s,
375 unsigned int bpp, uint8_t* dst,
376 int usePtr, const uint8_t *src,
377 uint8_t c, int width, int offset)
378 {
379 switch (bpp) {
380 case 1:
381 while (--width >= 0) {
382 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
383 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
384 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
385 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
386 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
387 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
388 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
389 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
390 }
391 break;
392 case 2:
393 while (--width >= 0) {
394 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
395 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
396 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
397 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
398 }
399 break;
400 case 4:
401 while (--width >= 0) {
402 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
403 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
404 }
405 break;
406 case 10:
407 case 12:
408 case 14: {
409 uint16_t *dst16 = (uint16_t *)dst;
410 int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
411 uint8_t shift = is_dng ? 0 : 16 - bpp;
412 GetBitContext gb;
413
414 init_get_bits8(&gb, src, width);
415 for (int i = 0; i < s->width; i++) {
416 dst16[i] = get_bits(&gb, bpp) << shift;
417 }
418 }
419 break;
420 default:
421 if (usePtr) {
422 memcpy(dst + offset, src, width);
423 } else {
424 memset(dst + offset, c, width);
425 }
426 }
427 }
428
deinvert_buffer(TiffContext * s,const uint8_t * src,int size)429 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
430 {
431 int i;
432
433 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
434 if (!s->deinvert_buf)
435 return AVERROR(ENOMEM);
436 for (i = 0; i < size; i++)
437 s->deinvert_buf[i] = ff_reverse[src[i]];
438
439 return 0;
440 }
441
unpack_gray(TiffContext * s,AVFrame * p,const uint8_t * src,int lnum,int width,int bpp)442 static void unpack_gray(TiffContext *s, AVFrame *p,
443 const uint8_t *src, int lnum, int width, int bpp)
444 {
445 GetBitContext gb;
446 uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]);
447
448 init_get_bits8(&gb, src, width);
449
450 for (int i = 0; i < s->width; i++) {
451 dst[i] = get_bits(&gb, bpp);
452 }
453 }
454
unpack_yuv(TiffContext * s,AVFrame * p,const uint8_t * src,int lnum)455 static void unpack_yuv(TiffContext *s, AVFrame *p,
456 const uint8_t *src, int lnum)
457 {
458 int i, j, k;
459 int w = (s->width - 1) / s->subsampling[0] + 1;
460 uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
461 uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
462 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
463 for (i = 0; i < w; i++) {
464 for (j = 0; j < s->subsampling[1]; j++)
465 for (k = 0; k < s->subsampling[0]; k++)
466 p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
467 FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++;
468 *pu++ = *src++;
469 *pv++ = *src++;
470 }
471 }else{
472 for (i = 0; i < w; i++) {
473 for (j = 0; j < s->subsampling[1]; j++)
474 for (k = 0; k < s->subsampling[0]; k++)
475 p->data[0][(lnum + j) * p->linesize[0] +
476 i * s->subsampling[0] + k] = *src++;
477 *pu++ = *src++;
478 *pv++ = *src++;
479 }
480 }
481 }
482
483 #if CONFIG_ZLIB
tiff_uncompress(uint8_t * dst,unsigned long * len,const uint8_t * src,int size)484 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
485 int size)
486 {
487 z_stream zstream = { 0 };
488 int zret;
489
490 zstream.next_in = src;
491 zstream.avail_in = size;
492 zstream.next_out = dst;
493 zstream.avail_out = *len;
494 zret = inflateInit(&zstream);
495 if (zret != Z_OK) {
496 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
497 return zret;
498 }
499 zret = inflate(&zstream, Z_SYNC_FLUSH);
500 inflateEnd(&zstream);
501 *len = zstream.total_out;
502 return zret == Z_STREAM_END ? Z_OK : zret;
503 }
504
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)505 static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
506 const uint8_t *src, int size, int width, int lines,
507 int strip_start, int is_yuv)
508 {
509 uint8_t *zbuf;
510 unsigned long outlen;
511 int ret, line;
512 outlen = width * lines;
513 zbuf = av_malloc(outlen);
514 if (!zbuf)
515 return AVERROR(ENOMEM);
516 if (s->fill_order) {
517 if ((ret = deinvert_buffer(s, src, size)) < 0) {
518 av_free(zbuf);
519 return ret;
520 }
521 src = s->deinvert_buf;
522 }
523 ret = tiff_uncompress(zbuf, &outlen, src, size);
524 if (ret != Z_OK) {
525 av_log(s->avctx, AV_LOG_ERROR,
526 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
527 (unsigned long)width * lines, ret);
528 av_free(zbuf);
529 return AVERROR_UNKNOWN;
530 }
531 src = zbuf;
532 for (line = 0; line < lines; line++) {
533 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
534 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
535 } else {
536 memcpy(dst, src, width);
537 }
538 if (is_yuv) {
539 unpack_yuv(s, p, dst, strip_start + line);
540 line += s->subsampling[1] - 1;
541 }
542 dst += stride;
543 src += width;
544 }
545 av_free(zbuf);
546 return 0;
547 }
548 #endif
549
550 #if CONFIG_LZMA
tiff_uncompress_lzma(uint8_t * dst,uint64_t * len,const uint8_t * src,int size)551 static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src,
552 int size)
553 {
554 lzma_stream stream = LZMA_STREAM_INIT;
555 lzma_ret ret;
556
557 stream.next_in = (uint8_t *)src;
558 stream.avail_in = size;
559 stream.next_out = dst;
560 stream.avail_out = *len;
561 ret = lzma_stream_decoder(&stream, UINT64_MAX, 0);
562 if (ret != LZMA_OK) {
563 av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret);
564 return ret;
565 }
566 ret = lzma_code(&stream, LZMA_RUN);
567 lzma_end(&stream);
568 *len = stream.total_out;
569 return ret == LZMA_STREAM_END ? LZMA_OK : ret;
570 }
571
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)572 static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
573 const uint8_t *src, int size, int width, int lines,
574 int strip_start, int is_yuv)
575 {
576 uint64_t outlen = width * (uint64_t)lines;
577 int ret, line;
578 uint8_t *buf = av_malloc(outlen);
579 if (!buf)
580 return AVERROR(ENOMEM);
581 if (s->fill_order) {
582 if ((ret = deinvert_buffer(s, src, size)) < 0) {
583 av_free(buf);
584 return ret;
585 }
586 src = s->deinvert_buf;
587 }
588 ret = tiff_uncompress_lzma(buf, &outlen, src, size);
589 if (ret != LZMA_OK) {
590 av_log(s->avctx, AV_LOG_ERROR,
591 "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen,
592 (uint64_t)width * lines, ret);
593 av_free(buf);
594 return AVERROR_UNKNOWN;
595 }
596 src = buf;
597 for (line = 0; line < lines; line++) {
598 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
599 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
600 } else {
601 memcpy(dst, src, width);
602 }
603 if (is_yuv) {
604 unpack_yuv(s, p, dst, strip_start + line);
605 line += s->subsampling[1] - 1;
606 }
607 dst += stride;
608 src += width;
609 }
610 av_free(buf);
611 return 0;
612 }
613 #endif
614
tiff_unpack_fax(TiffContext * s,uint8_t * dst,int stride,const uint8_t * src,int size,int width,int lines)615 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
616 const uint8_t *src, int size, int width, int lines)
617 {
618 int i, ret = 0;
619 int line;
620 uint8_t *src2;
621
622 av_fast_padded_malloc(&s->fax_buffer, &s->fax_buffer_size, size);
623 src2 = s->fax_buffer;
624
625 if (!src2) {
626 av_log(s->avctx, AV_LOG_ERROR,
627 "Error allocating temporary buffer\n");
628 return AVERROR(ENOMEM);
629 }
630
631 if (!s->fill_order) {
632 memcpy(src2, src, size);
633 } else {
634 for (i = 0; i < size; i++)
635 src2[i] = ff_reverse[src[i]];
636 }
637 memset(src2 + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
638 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
639 s->compr, s->fax_opts);
640 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
641 for (line = 0; line < lines; line++) {
642 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
643 dst += stride;
644 }
645 return ret;
646 }
647
dng_decode_jpeg(AVCodecContext * avctx,AVFrame * frame,int tile_byte_count,int dst_x,int dst_y,int w,int h)648 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
649 int tile_byte_count, int dst_x, int dst_y, int w, int h)
650 {
651 TiffContext *s = avctx->priv_data;
652 uint8_t *dst_data, *src_data;
653 uint32_t dst_offset; /* offset from dst buffer in pixels */
654 int is_single_comp, is_u16, pixel_size;
655 int ret;
656
657 if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb))
658 return AVERROR_INVALIDDATA;
659
660 /* Prepare a packet and send to the MJPEG decoder */
661 av_packet_unref(s->jpkt);
662 s->jpkt->data = (uint8_t*)s->gb.buffer;
663 s->jpkt->size = tile_byte_count;
664
665 if (s->is_bayer) {
666 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
667 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
668 image or not from its own data (and we need that information when decoding it). */
669 mjpegdecctx->bayer = 1;
670 }
671
672 ret = avcodec_send_packet(s->avctx_mjpeg, s->jpkt);
673 if (ret < 0) {
674 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
675 return ret;
676 }
677
678 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
679 if (ret < 0) {
680 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
681
682 /* Normally skip, error if explode */
683 if (avctx->err_recognition & AV_EF_EXPLODE)
684 return AVERROR_INVALIDDATA;
685 else
686 return 0;
687 }
688
689 is_u16 = (s->bpp > 8);
690
691 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
692
693 if (s->jpgframe->width != s->avctx_mjpeg->width ||
694 s->jpgframe->height != s->avctx_mjpeg->height ||
695 s->jpgframe->format != s->avctx_mjpeg->pix_fmt)
696 return AVERROR_INVALIDDATA;
697
698 /* See dng_blit for explanation */
699 if (s->avctx_mjpeg->width == w * 2 &&
700 s->avctx_mjpeg->height == h / 2 &&
701 s->avctx_mjpeg->pix_fmt == AV_PIX_FMT_GRAY16LE) {
702 is_single_comp = 1;
703 } else if (s->avctx_mjpeg->width >= w &&
704 s->avctx_mjpeg->height >= h &&
705 s->avctx_mjpeg->pix_fmt == (is_u16 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8)
706 ) {
707 is_single_comp = 0;
708 } else
709 return AVERROR_INVALIDDATA;
710
711 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
712
713 if (is_single_comp && !is_u16) {
714 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
715 av_frame_unref(s->jpgframe);
716 return AVERROR_PATCHWELCOME;
717 }
718
719 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
720 dst_data = frame->data[0] + dst_offset * pixel_size;
721 src_data = s->jpgframe->data[0];
722
723 dng_blit(s,
724 dst_data,
725 frame->linesize[0] / pixel_size,
726 src_data,
727 s->jpgframe->linesize[0] / pixel_size,
728 w,
729 h,
730 is_single_comp,
731 is_u16);
732
733 av_frame_unref(s->jpgframe);
734
735 return 0;
736 }
737
dng_decode_strip(AVCodecContext * avctx,AVFrame * frame)738 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame)
739 {
740 TiffContext *s = avctx->priv_data;
741
742 s->jpgframe->width = s->width;
743 s->jpgframe->height = s->height;
744
745 s->avctx_mjpeg->width = s->width;
746 s->avctx_mjpeg->height = s->height;
747
748 return dng_decode_jpeg(avctx, frame, s->stripsize, 0, 0, s->width, s->height);
749 }
750
tiff_unpack_strip(TiffContext * s,AVFrame * p,uint8_t * dst,int stride,const uint8_t * src,int size,int strip_start,int lines)751 static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
752 const uint8_t *src, int size, int strip_start, int lines)
753 {
754 PutByteContext pb;
755 int c, line, pixels, code, ret;
756 const uint8_t *ssrc = src;
757 int width = ((s->width * s->bpp) + 7) >> 3;
758 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
759 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
760 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
761 desc->nb_components >= 3;
762 int is_dng;
763
764 if (s->planar)
765 width /= s->bppcount;
766
767 if (size <= 0)
768 return AVERROR_INVALIDDATA;
769
770 if (is_yuv) {
771 int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
772 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
773 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
774 if (s->yuv_line == NULL) {
775 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
776 return AVERROR(ENOMEM);
777 }
778 dst = s->yuv_line;
779 stride = 0;
780
781 width = (s->width - 1) / s->subsampling[0] + 1;
782 width = width * s->subsampling[0] * s->subsampling[1] + 2*width;
783 av_assert0(width <= bytes_per_row);
784 av_assert0(s->bpp == 24);
785 }
786 if (s->is_bayer) {
787 av_assert0(width == (s->bpp * s->width + 7) >> 3);
788 }
789 if (p->format == AV_PIX_FMT_GRAY12) {
790 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width);
791 if (s->yuv_line == NULL) {
792 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
793 return AVERROR(ENOMEM);
794 }
795 dst = s->yuv_line;
796 stride = 0;
797 }
798
799 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
800 #if CONFIG_ZLIB
801 return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines,
802 strip_start, is_yuv);
803 #else
804 av_log(s->avctx, AV_LOG_ERROR,
805 "zlib support not enabled, "
806 "deflate compression not supported\n");
807 return AVERROR(ENOSYS);
808 #endif
809 }
810 if (s->compr == TIFF_LZMA) {
811 #if CONFIG_LZMA
812 return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines,
813 strip_start, is_yuv);
814 #else
815 av_log(s->avctx, AV_LOG_ERROR,
816 "LZMA support not enabled\n");
817 return AVERROR(ENOSYS);
818 #endif
819 }
820 if (s->compr == TIFF_LZW) {
821 if (s->fill_order) {
822 if ((ret = deinvert_buffer(s, src, size)) < 0)
823 return ret;
824 ssrc = src = s->deinvert_buf;
825 }
826 if (size > 1 && !src[0] && (src[1]&1)) {
827 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
828 }
829 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
830 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
831 return ret;
832 }
833 for (line = 0; line < lines; line++) {
834 pixels = ff_lzw_decode(s->lzw, dst, width);
835 if (pixels < width) {
836 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
837 pixels, width);
838 return AVERROR_INVALIDDATA;
839 }
840 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
841 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
842 if (is_yuv) {
843 unpack_yuv(s, p, dst, strip_start + line);
844 line += s->subsampling[1] - 1;
845 } else if (p->format == AV_PIX_FMT_GRAY12) {
846 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
847 }
848 dst += stride;
849 }
850 return 0;
851 }
852 if (s->compr == TIFF_CCITT_RLE ||
853 s->compr == TIFF_G3 ||
854 s->compr == TIFF_G4) {
855 if (is_yuv || p->format == AV_PIX_FMT_GRAY12)
856 return AVERROR_INVALIDDATA;
857
858 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
859 }
860
861 bytestream2_init(&s->gb, src, size);
862 bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines));
863
864 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
865
866 /* Decode JPEG-encoded DNGs with strips */
867 if (s->compr == TIFF_NEWJPEG && is_dng) {
868 if (s->strips > 1) {
869 av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n");
870 return AVERROR_PATCHWELCOME;
871 }
872 if ((ret = dng_decode_strip(s->avctx, p)) < 0)
873 return ret;
874 return 0;
875 }
876
877 if (is_dng && stride == 0)
878 return AVERROR_INVALIDDATA;
879
880 for (line = 0; line < lines; line++) {
881 if (src - ssrc > size) {
882 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
883 return AVERROR_INVALIDDATA;
884 }
885
886 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
887 break;
888 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
889 switch (s->compr) {
890 case TIFF_RAW:
891 if (ssrc + size - src < width)
892 return AVERROR_INVALIDDATA;
893
894 if (!s->fill_order) {
895 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
896 dst, 1, src, 0, width, 0);
897 } else {
898 int i;
899 for (i = 0; i < width; i++)
900 dst[i] = ff_reverse[src[i]];
901 }
902
903 /* Color processing for DNG images with uncompressed strips (non-tiled) */
904 if (is_dng) {
905 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
906
907 is_u16 = (s->bpp / s->bppcount > 8);
908 pixel_size_bits = (is_u16 ? 16 : 8);
909 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
910
911 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
912 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
913 dng_blit(s,
914 dst,
915 0, // no stride, only 1 line
916 dst,
917 0, // no stride, only 1 line
918 elements,
919 1,
920 0, // single-component variation is only preset in JPEG-encoded DNGs
921 is_u16);
922 }
923
924 src += width;
925 break;
926 case TIFF_PACKBITS:
927 for (pixels = 0; pixels < width;) {
928 if (ssrc + size - src < 2) {
929 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
930 return AVERROR_INVALIDDATA;
931 }
932 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
933 if (code >= 0) {
934 code++;
935 if (pixels + code > width ||
936 ssrc + size - src < code) {
937 av_log(s->avctx, AV_LOG_ERROR,
938 "Copy went out of bounds\n");
939 return AVERROR_INVALIDDATA;
940 }
941 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
942 dst, 1, src, 0, code, pixels);
943 src += code;
944 pixels += code;
945 } else if (code != -128) { // -127..-1
946 code = (-code) + 1;
947 if (pixels + code > width) {
948 av_log(s->avctx, AV_LOG_ERROR,
949 "Run went out of bounds\n");
950 return AVERROR_INVALIDDATA;
951 }
952 c = *src++;
953 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
954 dst, 0, NULL, c, code, pixels);
955 pixels += code;
956 }
957 }
958 if (s->fill_order) {
959 int i;
960 for (i = 0; i < width; i++)
961 dst[i] = ff_reverse[dst[i]];
962 }
963 break;
964 }
965 if (is_yuv) {
966 unpack_yuv(s, p, dst, strip_start + line);
967 line += s->subsampling[1] - 1;
968 } else if (p->format == AV_PIX_FMT_GRAY12) {
969 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
970 }
971 dst += stride;
972 }
973 return 0;
974 }
975
dng_decode_tiles(AVCodecContext * avctx,AVFrame * frame,const AVPacket * avpkt)976 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame,
977 const AVPacket *avpkt)
978 {
979 TiffContext *s = avctx->priv_data;
980 int tile_idx;
981 int tile_offset_offset, tile_offset;
982 int tile_byte_count_offset, tile_byte_count;
983 int tile_count_x, tile_count_y;
984 int tile_width, tile_length;
985 int has_width_leftover, has_height_leftover;
986 int tile_x = 0, tile_y = 0;
987 int pos_x = 0, pos_y = 0;
988 int ret;
989
990 s->jpgframe->width = s->tile_width;
991 s->jpgframe->height = s->tile_length;
992
993 s->avctx_mjpeg->width = s->tile_width;
994 s->avctx_mjpeg->height = s->tile_length;
995
996 has_width_leftover = (s->width % s->tile_width != 0);
997 has_height_leftover = (s->height % s->tile_length != 0);
998
999 /* Calculate tile counts (round up) */
1000 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
1001 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
1002
1003 /* Iterate over the number of tiles */
1004 for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) {
1005 tile_x = tile_idx % tile_count_x;
1006 tile_y = tile_idx / tile_count_x;
1007
1008 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
1009 tile_width = s->width % s->tile_width;
1010 else
1011 tile_width = s->tile_width;
1012
1013 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
1014 tile_length = s->height % s->tile_length;
1015 else
1016 tile_length = s->tile_length;
1017
1018 /* Read tile offset */
1019 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
1020 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
1021 tile_offset = ff_tget_long(&s->gb, s->le);
1022
1023 /* Read tile byte size */
1024 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
1025 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
1026 tile_byte_count = ff_tget_long(&s->gb, s->le);
1027
1028 /* Seek to tile data */
1029 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
1030
1031 /* Decode JPEG tile and copy it in the reference frame */
1032 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1033
1034 if (ret < 0)
1035 return ret;
1036
1037 /* Advance current positions */
1038 pos_x += tile_width;
1039 if (tile_x == tile_count_x - 1) { // If on the right edge
1040 pos_x = 0;
1041 pos_y += tile_length;
1042 }
1043 }
1044
1045 /* Frame is ready to be output */
1046 frame->pict_type = AV_PICTURE_TYPE_I;
1047 frame->key_frame = 1;
1048
1049 return avpkt->size;
1050 }
1051
init_image(TiffContext * s,ThreadFrame * frame)1052 static int init_image(TiffContext *s, ThreadFrame *frame)
1053 {
1054 int ret;
1055 int create_gray_palette = 0;
1056
1057 // make sure there is no aliasing in the following switch
1058 if (s->bpp >= 100 || s->bppcount >= 10) {
1059 av_log(s->avctx, AV_LOG_ERROR,
1060 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1061 s->bpp, s->bppcount);
1062 return AVERROR_INVALIDDATA;
1063 }
1064
1065 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1066 case 11:
1067 if (!s->palette_is_set) {
1068 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1069 break;
1070 }
1071 case 21:
1072 case 41:
1073 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1074 if (!s->palette_is_set) {
1075 create_gray_palette = 1;
1076 }
1077 break;
1078 case 81:
1079 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1080 break;
1081 case 121:
1082 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1083 break;
1084 case 10081:
1085 switch (AV_RL32(s->pattern)) {
1086 case 0x02010100:
1087 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1088 break;
1089 case 0x00010102:
1090 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1091 break;
1092 case 0x01000201:
1093 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1094 break;
1095 case 0x01020001:
1096 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1097 break;
1098 default:
1099 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1100 AV_RL32(s->pattern));
1101 return AVERROR_PATCHWELCOME;
1102 }
1103 break;
1104 case 10101:
1105 case 10121:
1106 case 10141:
1107 case 10161:
1108 switch (AV_RL32(s->pattern)) {
1109 case 0x02010100:
1110 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1111 break;
1112 case 0x00010102:
1113 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1114 break;
1115 case 0x01000201:
1116 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1117 break;
1118 case 0x01020001:
1119 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1120 break;
1121 default:
1122 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1123 AV_RL32(s->pattern));
1124 return AVERROR_PATCHWELCOME;
1125 }
1126 break;
1127 case 243:
1128 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1129 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1130 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1131 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1132 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1133 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1134 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1135 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1136 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1137 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1138 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1139 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1140 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1141 } else {
1142 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1143 return AVERROR_PATCHWELCOME;
1144 }
1145 } else
1146 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1147 break;
1148 case 161:
1149 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1150 break;
1151 case 162:
1152 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1153 break;
1154 case 322:
1155 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1156 break;
1157 case 324:
1158 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1159 break;
1160 case 405:
1161 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1162 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1163 else {
1164 av_log(s->avctx, AV_LOG_ERROR,
1165 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1166 return AVERROR_PATCHWELCOME;
1167 }
1168 break;
1169 case 483:
1170 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1171 break;
1172 case 644:
1173 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1174 break;
1175 case 1243:
1176 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1177 break;
1178 case 1324:
1179 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1180 break;
1181 case 1483:
1182 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1183 break;
1184 case 1644:
1185 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1186 break;
1187 default:
1188 av_log(s->avctx, AV_LOG_ERROR,
1189 "This format is not supported (bpp=%d, bppcount=%d)\n",
1190 s->bpp, s->bppcount);
1191 return AVERROR_INVALIDDATA;
1192 }
1193
1194 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1195 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1196 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1197 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1198 desc->nb_components < 3) {
1199 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1200 return AVERROR_INVALIDDATA;
1201 }
1202 }
1203
1204 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1205 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1206 if (ret < 0)
1207 return ret;
1208 }
1209 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1210 return ret;
1211 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1212 if (!create_gray_palette)
1213 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
1214 else {
1215 /* make default grayscale pal */
1216 int i;
1217 uint32_t *pal = (uint32_t *)frame->f->data[1];
1218 for (i = 0; i < 1<<s->bpp; i++)
1219 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1220 }
1221 }
1222 return 0;
1223 }
1224
set_sar(TiffContext * s,unsigned tag,unsigned num,unsigned den)1225 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1226 {
1227 int offset = tag == TIFF_YRES ? 2 : 0;
1228 s->res[offset++] = num;
1229 s->res[offset] = den;
1230 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1231 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1232 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1233 if (num > INT64_MAX || den > INT64_MAX) {
1234 num = num >> 1;
1235 den = den >> 1;
1236 }
1237 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1238 num, den, INT32_MAX);
1239 if (!s->avctx->sample_aspect_ratio.den)
1240 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1241 }
1242 }
1243
tiff_decode_tag(TiffContext * s,AVFrame * frame)1244 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1245 {
1246 AVFrameSideData *sd;
1247 GetByteContext gb_temp;
1248 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1249 int i, start;
1250 int pos;
1251 int ret;
1252 double *dp;
1253
1254 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1255 if (ret < 0) {
1256 goto end;
1257 }
1258 if (tag <= s->last_tag)
1259 return AVERROR_INVALIDDATA;
1260
1261 // We ignore TIFF_STRIP_SIZE as it is sometimes in the logic but wrong order around TIFF_STRIP_OFFS
1262 if (tag != TIFF_STRIP_SIZE)
1263 s->last_tag = tag;
1264
1265 off = bytestream2_tell(&s->gb);
1266 if (count == 1) {
1267 switch (type) {
1268 case TIFF_BYTE:
1269 case TIFF_SHORT:
1270 case TIFF_LONG:
1271 value = ff_tget(&s->gb, type, s->le);
1272 break;
1273 case TIFF_RATIONAL:
1274 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1275 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1276 if (!value2) {
1277 av_log(s->avctx, AV_LOG_ERROR, "Invalid denominator in rational\n");
1278 return AVERROR_INVALIDDATA;
1279 }
1280
1281 break;
1282 case TIFF_STRING:
1283 if (count <= 4) {
1284 break;
1285 }
1286 default:
1287 value = UINT_MAX;
1288 }
1289 }
1290
1291 switch (tag) {
1292 case TIFF_SUBFILE:
1293 s->is_thumbnail = (value != 0);
1294 break;
1295 case TIFF_WIDTH:
1296 s->width = value;
1297 break;
1298 case TIFF_HEIGHT:
1299 s->height = value;
1300 break;
1301 case TIFF_BPP:
1302 if (count > 5 || count <= 0) {
1303 av_log(s->avctx, AV_LOG_ERROR,
1304 "This format is not supported (bpp=%d, %d components)\n",
1305 value, count);
1306 return AVERROR_INVALIDDATA;
1307 }
1308 s->bppcount = count;
1309 if (count == 1)
1310 s->bpp = value;
1311 else {
1312 switch (type) {
1313 case TIFF_BYTE:
1314 case TIFF_SHORT:
1315 case TIFF_LONG:
1316 s->bpp = 0;
1317 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1318 return AVERROR_INVALIDDATA;
1319 for (i = 0; i < count; i++)
1320 s->bpp += ff_tget(&s->gb, type, s->le);
1321 break;
1322 default:
1323 s->bpp = -1;
1324 }
1325 }
1326 break;
1327 case TIFF_SAMPLES_PER_PIXEL:
1328 if (count != 1) {
1329 av_log(s->avctx, AV_LOG_ERROR,
1330 "Samples per pixel requires a single value, many provided\n");
1331 return AVERROR_INVALIDDATA;
1332 }
1333 if (value > 5 || value <= 0) {
1334 av_log(s->avctx, AV_LOG_ERROR,
1335 "Invalid samples per pixel %d\n", value);
1336 return AVERROR_INVALIDDATA;
1337 }
1338 if (s->bppcount == 1)
1339 s->bpp *= value;
1340 s->bppcount = value;
1341 break;
1342 case TIFF_COMPR:
1343 s->compr = value;
1344 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1345 s->predictor = 0;
1346 switch (s->compr) {
1347 case TIFF_RAW:
1348 case TIFF_PACKBITS:
1349 case TIFF_LZW:
1350 case TIFF_CCITT_RLE:
1351 break;
1352 case TIFF_G3:
1353 case TIFF_G4:
1354 s->fax_opts = 0;
1355 break;
1356 case TIFF_DEFLATE:
1357 case TIFF_ADOBE_DEFLATE:
1358 #if CONFIG_ZLIB
1359 break;
1360 #else
1361 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1362 return AVERROR(ENOSYS);
1363 #endif
1364 case TIFF_JPEG:
1365 case TIFF_NEWJPEG:
1366 s->is_jpeg = 1;
1367 break;
1368 case TIFF_LZMA:
1369 #if CONFIG_LZMA
1370 break;
1371 #else
1372 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1373 return AVERROR(ENOSYS);
1374 #endif
1375 default:
1376 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1377 s->compr);
1378 return AVERROR_INVALIDDATA;
1379 }
1380 break;
1381 case TIFF_ROWSPERSTRIP:
1382 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1383 value = s->height;
1384 s->rps = FFMIN(value, s->height);
1385 break;
1386 case TIFF_STRIP_OFFS:
1387 if (count == 1) {
1388 if (value > INT_MAX) {
1389 av_log(s->avctx, AV_LOG_ERROR,
1390 "strippos %u too large\n", value);
1391 return AVERROR_INVALIDDATA;
1392 }
1393 s->strippos = 0;
1394 s->stripoff = value;
1395 } else
1396 s->strippos = off;
1397 s->strips = count;
1398 if (s->strips == 1)
1399 s->rps = s->height;
1400 s->sot = type;
1401 break;
1402 case TIFF_STRIP_SIZE:
1403 if (count == 1) {
1404 if (value > INT_MAX) {
1405 av_log(s->avctx, AV_LOG_ERROR,
1406 "stripsize %u too large\n", value);
1407 return AVERROR_INVALIDDATA;
1408 }
1409 s->stripsizesoff = 0;
1410 s->stripsize = value;
1411 s->strips = 1;
1412 } else {
1413 s->stripsizesoff = off;
1414 }
1415 s->strips = count;
1416 s->sstype = type;
1417 break;
1418 case TIFF_XRES:
1419 case TIFF_YRES:
1420 set_sar(s, tag, value, value2);
1421 break;
1422 case TIFF_TILE_OFFSETS:
1423 s->tile_offsets_offset = off;
1424 s->tile_count = count;
1425 s->is_tiled = 1;
1426 break;
1427 case TIFF_TILE_BYTE_COUNTS:
1428 s->tile_byte_counts_offset = off;
1429 break;
1430 case TIFF_TILE_LENGTH:
1431 s->tile_length = value;
1432 break;
1433 case TIFF_TILE_WIDTH:
1434 s->tile_width = value;
1435 break;
1436 case TIFF_PREDICTOR:
1437 s->predictor = value;
1438 break;
1439 case TIFF_SUB_IFDS:
1440 if (count == 1)
1441 s->sub_ifd = value;
1442 else if (count > 1)
1443 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1444 break;
1445 case DNG_LINEARIZATION_TABLE:
1446 if (count > FF_ARRAY_ELEMS(s->dng_lut))
1447 return AVERROR_INVALIDDATA;
1448 for (int i = 0; i < count; i++)
1449 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1450 break;
1451 case DNG_BLACK_LEVEL:
1452 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1453 if (type == TIFF_RATIONAL) {
1454 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1455 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1456 if (!value2) {
1457 av_log(s->avctx, AV_LOG_ERROR, "Invalid black level denominator\n");
1458 return AVERROR_INVALIDDATA;
1459 }
1460
1461 s->black_level = value / value2;
1462 } else
1463 s->black_level = ff_tget(&s->gb, type, s->le);
1464 av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n");
1465 } else {
1466 s->black_level = value / value2;
1467 }
1468 break;
1469 case DNG_WHITE_LEVEL:
1470 s->white_level = value;
1471 break;
1472 case TIFF_CFA_PATTERN_DIM:
1473 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1474 ff_tget(&s->gb, type, s->le) != 2)) {
1475 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1476 return AVERROR_INVALIDDATA;
1477 }
1478 break;
1479 case TIFF_CFA_PATTERN:
1480 s->is_bayer = 1;
1481 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1482 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1483 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1484 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1485 break;
1486 case TIFF_PHOTOMETRIC:
1487 switch (value) {
1488 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1489 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1490 case TIFF_PHOTOMETRIC_RGB:
1491 case TIFF_PHOTOMETRIC_PALETTE:
1492 case TIFF_PHOTOMETRIC_SEPARATED:
1493 case TIFF_PHOTOMETRIC_YCBCR:
1494 case TIFF_PHOTOMETRIC_CFA:
1495 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1496 s->photometric = value;
1497 break;
1498 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1499 case TIFF_PHOTOMETRIC_CIE_LAB:
1500 case TIFF_PHOTOMETRIC_ICC_LAB:
1501 case TIFF_PHOTOMETRIC_ITU_LAB:
1502 case TIFF_PHOTOMETRIC_LOG_L:
1503 case TIFF_PHOTOMETRIC_LOG_LUV:
1504 avpriv_report_missing_feature(s->avctx,
1505 "PhotometricInterpretation 0x%04X",
1506 value);
1507 return AVERROR_PATCHWELCOME;
1508 default:
1509 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1510 "unknown\n", value);
1511 return AVERROR_INVALIDDATA;
1512 }
1513 break;
1514 case TIFF_FILL_ORDER:
1515 if (value < 1 || value > 2) {
1516 av_log(s->avctx, AV_LOG_ERROR,
1517 "Unknown FillOrder value %d, trying default one\n", value);
1518 value = 1;
1519 }
1520 s->fill_order = value - 1;
1521 break;
1522 case TIFF_PAL: {
1523 GetByteContext pal_gb[3];
1524 off = type_sizes[type];
1525 if (count / 3 > 256 ||
1526 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1527 return AVERROR_INVALIDDATA;
1528
1529 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1530 bytestream2_skip(&pal_gb[1], count / 3 * off);
1531 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1532
1533 off = (type_sizes[type] - 1) << 3;
1534 if (off > 31U) {
1535 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1536 return AVERROR_INVALIDDATA;
1537 }
1538
1539 for (i = 0; i < count / 3; i++) {
1540 uint32_t p = 0xFF000000;
1541 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1542 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1543 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1544 s->palette[i] = p;
1545 }
1546 s->palette_is_set = 1;
1547 break;
1548 }
1549 case TIFF_PLANAR:
1550 s->planar = value == 2;
1551 break;
1552 case TIFF_YCBCR_SUBSAMPLING:
1553 if (count != 2) {
1554 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1555 return AVERROR_INVALIDDATA;
1556 }
1557 for (i = 0; i < count; i++) {
1558 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1559 if (s->subsampling[i] <= 0) {
1560 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1561 s->subsampling[i] = 1;
1562 return AVERROR_INVALIDDATA;
1563 }
1564 }
1565 break;
1566 case TIFF_T4OPTIONS:
1567 if (s->compr == TIFF_G3)
1568 s->fax_opts = value;
1569 break;
1570 case TIFF_T6OPTIONS:
1571 if (s->compr == TIFF_G4)
1572 s->fax_opts = value;
1573 break;
1574 #define ADD_METADATA(count, name, sep)\
1575 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1576 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1577 goto end;\
1578 }
1579 case TIFF_MODEL_PIXEL_SCALE:
1580 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1581 break;
1582 case TIFF_MODEL_TRANSFORMATION:
1583 ADD_METADATA(count, "ModelTransformationTag", NULL);
1584 break;
1585 case TIFF_MODEL_TIEPOINT:
1586 ADD_METADATA(count, "ModelTiepointTag", NULL);
1587 break;
1588 case TIFF_GEO_KEY_DIRECTORY:
1589 if (s->geotag_count) {
1590 avpriv_request_sample(s->avctx, "Multiple geo key directories");
1591 return AVERROR_INVALIDDATA;
1592 }
1593 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1594 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1595 s->geotag_count = ff_tget_short(&s->gb, s->le);
1596 if (s->geotag_count > count / 4 - 1) {
1597 s->geotag_count = count / 4 - 1;
1598 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1599 }
1600 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1601 || s->geotag_count == 0) {
1602 s->geotag_count = 0;
1603 return -1;
1604 }
1605 s->geotags = av_mallocz_array(s->geotag_count, sizeof(TiffGeoTag));
1606 if (!s->geotags) {
1607 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1608 s->geotag_count = 0;
1609 goto end;
1610 }
1611 for (i = 0; i < s->geotag_count; i++) {
1612 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1613 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1614 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1615
1616 if (!s->geotags[i].type)
1617 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
1618 else
1619 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
1620 }
1621 break;
1622 case TIFF_GEO_DOUBLE_PARAMS:
1623 if (count >= INT_MAX / sizeof(int64_t))
1624 return AVERROR_INVALIDDATA;
1625 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1626 return AVERROR_INVALIDDATA;
1627 dp = av_malloc_array(count, sizeof(double));
1628 if (!dp) {
1629 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1630 goto end;
1631 }
1632 for (i = 0; i < count; i++)
1633 dp[i] = ff_tget_double(&s->gb, s->le);
1634 for (i = 0; i < s->geotag_count; i++) {
1635 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
1636 if (s->geotags[i].count == 0
1637 || s->geotags[i].offset + s->geotags[i].count > count) {
1638 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1639 } else if (s->geotags[i].val) {
1640 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1641 } else {
1642 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1643 if (!ap) {
1644 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1645 av_freep(&dp);
1646 return AVERROR(ENOMEM);
1647 }
1648 s->geotags[i].val = ap;
1649 }
1650 }
1651 }
1652 av_freep(&dp);
1653 break;
1654 case TIFF_GEO_ASCII_PARAMS:
1655 pos = bytestream2_tell(&s->gb);
1656 for (i = 0; i < s->geotag_count; i++) {
1657 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1658 if (s->geotags[i].count == 0
1659 || s->geotags[i].offset + s->geotags[i].count > count) {
1660 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1661 } else {
1662 char *ap;
1663
1664 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1665 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1666 return AVERROR_INVALIDDATA;
1667 if (s->geotags[i].val)
1668 return AVERROR_INVALIDDATA;
1669 ap = av_malloc(s->geotags[i].count);
1670 if (!ap) {
1671 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1672 return AVERROR(ENOMEM);
1673 }
1674 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1675 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1676 s->geotags[i].val = ap;
1677 }
1678 }
1679 }
1680 break;
1681 case TIFF_ICC_PROFILE:
1682 gb_temp = s->gb;
1683 bytestream2_seek(&gb_temp, SEEK_SET, off);
1684
1685 if (bytestream2_get_bytes_left(&gb_temp) < count)
1686 return AVERROR_INVALIDDATA;
1687
1688 sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count);
1689 if (!sd)
1690 return AVERROR(ENOMEM);
1691
1692 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1693 break;
1694 case TIFF_ARTIST:
1695 ADD_METADATA(count, "artist", NULL);
1696 break;
1697 case TIFF_COPYRIGHT:
1698 ADD_METADATA(count, "copyright", NULL);
1699 break;
1700 case TIFF_DATE:
1701 ADD_METADATA(count, "date", NULL);
1702 break;
1703 case TIFF_DOCUMENT_NAME:
1704 ADD_METADATA(count, "document_name", NULL);
1705 break;
1706 case TIFF_HOST_COMPUTER:
1707 ADD_METADATA(count, "computer", NULL);
1708 break;
1709 case TIFF_IMAGE_DESCRIPTION:
1710 ADD_METADATA(count, "description", NULL);
1711 break;
1712 case TIFF_MAKE:
1713 ADD_METADATA(count, "make", NULL);
1714 break;
1715 case TIFF_MODEL:
1716 ADD_METADATA(count, "model", NULL);
1717 break;
1718 case TIFF_PAGE_NAME:
1719 ADD_METADATA(count, "page_name", NULL);
1720 break;
1721 case TIFF_PAGE_NUMBER:
1722 ADD_METADATA(count, "page_number", " / ");
1723 // need to seek back to re-read the page number
1724 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1725 // read the page number
1726 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1727 // get back to where we were before the previous seek
1728 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1729 break;
1730 case TIFF_SOFTWARE_NAME:
1731 ADD_METADATA(count, "software", NULL);
1732 break;
1733 case DNG_VERSION:
1734 if (count == 4) {
1735 unsigned int ver[4];
1736 ver[0] = ff_tget(&s->gb, type, s->le);
1737 ver[1] = ff_tget(&s->gb, type, s->le);
1738 ver[2] = ff_tget(&s->gb, type, s->le);
1739 ver[3] = ff_tget(&s->gb, type, s->le);
1740
1741 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1742 ver[0], ver[1], ver[2], ver[3]);
1743
1744 tiff_set_type(s, TIFF_TYPE_DNG);
1745 }
1746 break;
1747 case CINEMADNG_TIME_CODES:
1748 case CINEMADNG_FRAME_RATE:
1749 case CINEMADNG_T_STOP:
1750 case CINEMADNG_REEL_NAME:
1751 case CINEMADNG_CAMERA_LABEL:
1752 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1753 break;
1754 default:
1755 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1756 av_log(s->avctx, AV_LOG_ERROR,
1757 "Unknown or unsupported tag %d/0x%0X\n",
1758 tag, tag);
1759 return AVERROR_INVALIDDATA;
1760 }
1761 }
1762 end:
1763 if (s->bpp > 64U) {
1764 av_log(s->avctx, AV_LOG_ERROR,
1765 "This format is not supported (bpp=%d, %d components)\n",
1766 s->bpp, count);
1767 s->bpp = 0;
1768 return AVERROR_INVALIDDATA;
1769 }
1770 bytestream2_seek(&s->gb, start, SEEK_SET);
1771 return 0;
1772 }
1773
decode_frame(AVCodecContext * avctx,void * data,int * got_frame,AVPacket * avpkt)1774 static int decode_frame(AVCodecContext *avctx,
1775 void *data, int *got_frame, AVPacket *avpkt)
1776 {
1777 TiffContext *const s = avctx->priv_data;
1778 AVFrame *const p = data;
1779 ThreadFrame frame = { .f = data };
1780 unsigned off, last_off;
1781 int le, ret, plane, planes;
1782 int i, j, entries, stride;
1783 unsigned soff, ssize;
1784 uint8_t *dst;
1785 GetByteContext stripsizes;
1786 GetByteContext stripdata;
1787 int retry_for_subifd, retry_for_page;
1788 int is_dng;
1789 int has_tile_bits, has_strip_bits;
1790
1791 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1792
1793 // parse image header
1794 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1795 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1796 return ret;
1797 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1798 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1799 return AVERROR_INVALIDDATA;
1800 }
1801 s->le = le;
1802 // TIFF_BPP is not a required tag and defaults to 1
1803
1804 s->tiff_type = TIFF_TYPE_TIFF;
1805 again:
1806 s->is_thumbnail = 0;
1807 s->bppcount = s->bpp = 1;
1808 s->photometric = TIFF_PHOTOMETRIC_NONE;
1809 s->compr = TIFF_RAW;
1810 s->fill_order = 0;
1811 s->white_level = 0;
1812 s->is_bayer = 0;
1813 s->is_tiled = 0;
1814 s->is_jpeg = 0;
1815 s->cur_page = 0;
1816 s->last_tag = 0;
1817
1818 for (i = 0; i < 65536; i++)
1819 s->dng_lut[i] = i;
1820
1821 free_geotags(s);
1822
1823 // Reset these offsets so we can tell if they were set this frame
1824 s->stripsizesoff = s->strippos = 0;
1825 /* parse image file directory */
1826 bytestream2_seek(&s->gb, off, SEEK_SET);
1827 entries = ff_tget_short(&s->gb, le);
1828 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1829 return AVERROR_INVALIDDATA;
1830 for (i = 0; i < entries; i++) {
1831 if ((ret = tiff_decode_tag(s, p)) < 0)
1832 return ret;
1833 }
1834
1835 if (s->get_thumbnail && !s->is_thumbnail) {
1836 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1837 return AVERROR_EOF;
1838 }
1839
1840 /** whether we should process this IFD's SubIFD */
1841 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1842 /** whether we should process this multi-page IFD's next page */
1843 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1844
1845 last_off = off;
1846 if (retry_for_page) {
1847 // set offset to the next IFD
1848 off = ff_tget_long(&s->gb, le);
1849 } else if (retry_for_subifd) {
1850 // set offset to the SubIFD
1851 off = s->sub_ifd;
1852 }
1853
1854 if (retry_for_subifd || retry_for_page) {
1855 if (!off) {
1856 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1857 return AVERROR_INVALIDDATA;
1858 }
1859 if (off <= last_off) {
1860 avpriv_request_sample(s->avctx, "non increasing IFD offset");
1861 return AVERROR_INVALIDDATA;
1862 }
1863 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1864 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1865 return AVERROR_INVALIDDATA;
1866 }
1867 s->sub_ifd = 0;
1868 goto again;
1869 }
1870
1871 /* At this point we've decided on which (Sub)IFD to process */
1872
1873 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1874
1875 for (i = 0; i<s->geotag_count; i++) {
1876 const char *keyname = get_geokey_name(s->geotags[i].key);
1877 if (!keyname) {
1878 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1879 continue;
1880 }
1881 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1882 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1883 continue;
1884 }
1885 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1886 if (ret<0) {
1887 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1888 return ret;
1889 }
1890 }
1891
1892 if (is_dng) {
1893 int bps;
1894
1895 if (s->bpp % s->bppcount)
1896 return AVERROR_INVALIDDATA;
1897 bps = s->bpp / s->bppcount;
1898 if (bps < 8 || bps > 32)
1899 return AVERROR_INVALIDDATA;
1900
1901 if (s->white_level == 0)
1902 s->white_level = (1LL << bps) - 1; /* Default value as per the spec */
1903
1904 if (s->white_level <= s->black_level) {
1905 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1906 s->black_level, s->white_level);
1907 return AVERROR_INVALIDDATA;
1908 }
1909
1910 if (s->planar)
1911 return AVERROR_PATCHWELCOME;
1912 }
1913
1914 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1915 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1916 return AVERROR_INVALIDDATA;
1917 }
1918
1919 has_tile_bits = s->is_tiled || s->tile_byte_counts_offset || s->tile_offsets_offset || s->tile_width || s->tile_length || s->tile_count;
1920 has_strip_bits = s->strippos || s->strips || s->stripoff || s->rps || s->sot || s->sstype || s->stripsize || s->stripsizesoff;
1921
1922 if (has_tile_bits && has_strip_bits) {
1923 int tiled_dng = s->is_tiled && is_dng;
1924 av_log(avctx, tiled_dng ? AV_LOG_WARNING : AV_LOG_ERROR, "Tiled TIFF is not allowed to strip\n");
1925 if (!tiled_dng)
1926 return AVERROR_INVALIDDATA;
1927 }
1928
1929 /* now we have the data and may start decoding */
1930 if ((ret = init_image(s, &frame)) < 0)
1931 return ret;
1932
1933 if (!s->is_tiled || has_strip_bits) {
1934 if (s->strips == 1 && !s->stripsize) {
1935 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1936 s->stripsize = avpkt->size - s->stripoff;
1937 }
1938
1939 if (s->stripsizesoff) {
1940 if (s->stripsizesoff >= (unsigned)avpkt->size)
1941 return AVERROR_INVALIDDATA;
1942 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1943 avpkt->size - s->stripsizesoff);
1944 }
1945 if (s->strippos) {
1946 if (s->strippos >= (unsigned)avpkt->size)
1947 return AVERROR_INVALIDDATA;
1948 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1949 avpkt->size - s->strippos);
1950 }
1951
1952 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1953 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1954 return AVERROR_INVALIDDATA;
1955 }
1956 }
1957
1958 if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW ||
1959 s->photometric == TIFF_PHOTOMETRIC_CFA) {
1960 p->color_trc = AVCOL_TRC_LINEAR;
1961 } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) {
1962 p->color_trc = AVCOL_TRC_GAMMA22;
1963 }
1964
1965 /* Handle DNG images with JPEG-compressed tiles */
1966
1967 if (is_dng && s->is_tiled) {
1968 if (!s->is_jpeg) {
1969 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1970 return AVERROR_PATCHWELCOME;
1971 } else if (!s->is_bayer) {
1972 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1973 return AVERROR_PATCHWELCOME;
1974 } else {
1975 if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0)
1976 *got_frame = 1;
1977 return ret;
1978 }
1979 }
1980
1981 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1982
1983 planes = s->planar ? s->bppcount : 1;
1984 for (plane = 0; plane < planes; plane++) {
1985 uint8_t *five_planes = NULL;
1986 int remaining = avpkt->size;
1987 int decoded_height;
1988 stride = p->linesize[plane];
1989 dst = p->data[plane];
1990 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1991 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1992 stride = stride * 5 / 4;
1993 five_planes =
1994 dst = av_malloc(stride * s->height);
1995 if (!dst)
1996 return AVERROR(ENOMEM);
1997 }
1998 for (i = 0; i < s->height; i += s->rps) {
1999 if (i)
2000 dst += s->rps * stride;
2001 if (s->stripsizesoff)
2002 ssize = ff_tget(&stripsizes, s->sstype, le);
2003 else
2004 ssize = s->stripsize;
2005
2006 if (s->strippos)
2007 soff = ff_tget(&stripdata, s->sot, le);
2008 else
2009 soff = s->stripoff;
2010
2011 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
2012 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
2013 av_freep(&five_planes);
2014 return AVERROR_INVALIDDATA;
2015 }
2016 remaining -= ssize;
2017 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
2018 FFMIN(s->rps, s->height - i))) < 0) {
2019 if (avctx->err_recognition & AV_EF_EXPLODE) {
2020 av_freep(&five_planes);
2021 return ret;
2022 }
2023 break;
2024 }
2025 }
2026 decoded_height = FFMIN(i, s->height);
2027
2028 if (s->predictor == 2) {
2029 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
2030 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
2031 return AVERROR_PATCHWELCOME;
2032 }
2033 dst = five_planes ? five_planes : p->data[plane];
2034 soff = s->bpp >> 3;
2035 if (s->planar)
2036 soff = FFMAX(soff / s->bppcount, 1);
2037 ssize = s->width * soff;
2038 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
2039 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
2040 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
2041 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2042 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2043 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2044 for (i = 0; i < decoded_height; i++) {
2045 for (j = soff; j < ssize; j += 2)
2046 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2047 dst += stride;
2048 }
2049 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2050 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2051 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2052 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2053 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2054 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2055 for (i = 0; i < decoded_height; i++) {
2056 for (j = soff; j < ssize; j += 2)
2057 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2058 dst += stride;
2059 }
2060 } else {
2061 for (i = 0; i < decoded_height; i++) {
2062 for (j = soff; j < ssize; j++)
2063 dst[j] += dst[j - soff];
2064 dst += stride;
2065 }
2066 }
2067 }
2068
2069 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2070 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2071 dst = p->data[plane];
2072 for (i = 0; i < s->height; i++) {
2073 for (j = 0; j < stride; j++)
2074 dst[j] = c - dst[j];
2075 dst += stride;
2076 }
2077 }
2078
2079 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2080 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2081 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2082 uint8_t *src = five_planes ? five_planes : p->data[plane];
2083 dst = p->data[plane];
2084 for (i = 0; i < s->height; i++) {
2085 for (j = 0; j < s->width; j++) {
2086 int k = 255 - src[x * j + 3];
2087 int r = (255 - src[x * j ]) * k;
2088 int g = (255 - src[x * j + 1]) * k;
2089 int b = (255 - src[x * j + 2]) * k;
2090 dst[4 * j ] = r * 257 >> 16;
2091 dst[4 * j + 1] = g * 257 >> 16;
2092 dst[4 * j + 2] = b * 257 >> 16;
2093 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2094 }
2095 src += stride;
2096 dst += p->linesize[plane];
2097 }
2098 av_freep(&five_planes);
2099 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2100 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2101 dst = p->data[plane];
2102 for (i = 0; i < s->height; i++) {
2103 for (j = 0; j < s->width; j++) {
2104 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2105 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2106 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2107 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2108 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2109 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2110 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2111 AV_WB16(dst + 8 * j + 6, 65535);
2112 }
2113 dst += p->linesize[plane];
2114 }
2115 }
2116 }
2117
2118 if (s->planar && s->bppcount > 2) {
2119 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2120 FFSWAP(int, p->linesize[0], p->linesize[2]);
2121 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2122 FFSWAP(int, p->linesize[0], p->linesize[1]);
2123 }
2124
2125 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2126 uint16_t *dst = (uint16_t *)p->data[0];
2127 for (i = 0; i < s->height; i++) {
2128 for (j = 0; j < s->width; j++)
2129 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2130 dst += stride / 2;
2131 }
2132 }
2133
2134 *got_frame = 1;
2135
2136 return avpkt->size;
2137 }
2138
tiff_init(AVCodecContext * avctx)2139 static av_cold int tiff_init(AVCodecContext *avctx)
2140 {
2141 TiffContext *s = avctx->priv_data;
2142 const AVCodec *codec;
2143 int ret;
2144
2145 s->width = 0;
2146 s->height = 0;
2147 s->subsampling[0] =
2148 s->subsampling[1] = 1;
2149 s->avctx = avctx;
2150 ff_lzw_decode_open(&s->lzw);
2151 if (!s->lzw)
2152 return AVERROR(ENOMEM);
2153 ff_ccitt_unpack_init();
2154
2155 /* Allocate JPEG frame */
2156 s->jpgframe = av_frame_alloc();
2157 s->jpkt = av_packet_alloc();
2158 if (!s->jpgframe || !s->jpkt)
2159 return AVERROR(ENOMEM);
2160
2161 /* Prepare everything needed for JPEG decoding */
2162 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2163 if (!codec)
2164 return AVERROR_BUG;
2165 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2166 if (!s->avctx_mjpeg)
2167 return AVERROR(ENOMEM);
2168 s->avctx_mjpeg->flags = avctx->flags;
2169 s->avctx_mjpeg->flags2 = avctx->flags2;
2170 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2171 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2172 ret = avcodec_open2(s->avctx_mjpeg, codec, NULL);
2173 if (ret < 0) {
2174 return ret;
2175 }
2176
2177 return 0;
2178 }
2179
tiff_end(AVCodecContext * avctx)2180 static av_cold int tiff_end(AVCodecContext *avctx)
2181 {
2182 TiffContext *const s = avctx->priv_data;
2183
2184 free_geotags(s);
2185
2186 ff_lzw_decode_close(&s->lzw);
2187 av_freep(&s->deinvert_buf);
2188 s->deinvert_buf_size = 0;
2189 av_freep(&s->yuv_line);
2190 s->yuv_line_size = 0;
2191 av_freep(&s->fax_buffer);
2192 s->fax_buffer_size = 0;
2193 av_frame_free(&s->jpgframe);
2194 av_packet_free(&s->jpkt);
2195 avcodec_free_context(&s->avctx_mjpeg);
2196 return 0;
2197 }
2198
2199 #define OFFSET(x) offsetof(TiffContext, x)
2200 static const AVOption tiff_options[] = {
2201 { "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 },
2202 { "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 },
2203 { "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 },
2204 { NULL },
2205 };
2206
2207 static const AVClass tiff_decoder_class = {
2208 .class_name = "TIFF decoder",
2209 .item_name = av_default_item_name,
2210 .option = tiff_options,
2211 .version = LIBAVUTIL_VERSION_INT,
2212 };
2213
2214 AVCodec ff_tiff_decoder = {
2215 .name = "tiff",
2216 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2217 .type = AVMEDIA_TYPE_VIDEO,
2218 .id = AV_CODEC_ID_TIFF,
2219 .priv_data_size = sizeof(TiffContext),
2220 .init = tiff_init,
2221 .close = tiff_end,
2222 .decode = decode_frame,
2223 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2224 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
2225 .priv_class = &tiff_decoder_class,
2226 };
2227