2 * Copyright (c) 2006 Konstantin Shishkov
4 * This file is part of FFmpeg.
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.
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.
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
24 * @author Konstantin Shishkov
32 #define LZMA_API_STATIC
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"
43 #include "bytestream.h"
49 #include "tiff_data.h"
54 typedef struct TiffContext {
56 AVCodecContext *avctx;
59 /* JPEG decoding for DNG */
60 AVCodecContext *avctx_mjpeg; // wrapper context for MJPEG
61 AVFrame *jpgframe; // decoded JPEG tile
67 enum TiffType tiff_type;
69 unsigned int bpp, bppcount;
70 uint32_t palette[256];
74 enum TiffPhotometric photometric;
87 uint16_t dng_lut[65536];
92 int strips, rps, sstype;
94 int stripsizesoff, stripsize, stripoff, strippos;
99 int tile_byte_counts_offset, tile_offsets_offset;
100 int tile_width, tile_length;
105 uint8_t *deinvert_buf;
106 int deinvert_buf_size;
108 unsigned int yuv_line_size;
110 unsigned int fax_buffer_size;
116 static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
117 if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
118 s->tiff_type = tiff_type;
121 static void free_geotags(TiffContext *const s)
124 for (i = 0; i < s->geotag_count; i++) {
125 if (s->geotags[i].val)
126 av_freep(&s->geotags[i].val);
128 av_freep(&s->geotags);
132 #define RET_GEOKEY(TYPE, array, element)\
133 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
134 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
135 return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
137 static const char *get_geokey_name(int key)
139 RET_GEOKEY(VERT, vert, name);
140 RET_GEOKEY(PROJ, proj, name);
141 RET_GEOKEY(GEOG, geog, name);
142 RET_GEOKEY(CONF, conf, name);
147 static int get_geokey_type(int key)
149 RET_GEOKEY(VERT, vert, type);
150 RET_GEOKEY(PROJ, proj, type);
151 RET_GEOKEY(GEOG, geog, type);
152 RET_GEOKEY(CONF, conf, type);
154 return AVERROR_INVALIDDATA;
157 static int cmp_id_key(const void *id, const void *k)
159 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
162 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
164 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
171 static char *get_geokey_val(int key, int val)
175 if (val == TIFF_GEO_KEY_UNDEFINED)
176 return av_strdup("undefined");
177 if (val == TIFF_GEO_KEY_USER_DEFINED)
178 return av_strdup("User-Defined");
180 #define RET_GEOKEY_VAL(TYPE, array)\
181 if (val >= TIFF_##TYPE##_OFFSET &&\
182 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
183 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
186 case TIFF_GT_MODEL_TYPE_GEOKEY:
187 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
189 case TIFF_GT_RASTER_TYPE_GEOKEY:
190 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
192 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
193 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
194 case TIFF_VERTICAL_UNITS_GEOKEY:
195 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
197 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
198 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
199 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
201 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
202 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
203 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
205 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
206 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
207 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
209 case TIFF_GEOG_ELLIPSOID_GEOKEY:
210 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
212 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
213 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
215 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
216 ap = av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
219 case TIFF_PROJECTION_GEOKEY:
220 ap = av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
223 case TIFF_PROJ_COORD_TRANS_GEOKEY:
224 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
226 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
227 RET_GEOKEY_VAL(VERT_CS, vert_cs);
228 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
235 snprintf(ap, 14, "Unknown-%d", val);
239 static char *doubles2str(double *dp, int count, const char *sep)
243 uint64_t component_len;
244 if (!sep) sep = ", ";
245 component_len = 24LL + strlen(sep);
246 if (count >= (INT_MAX - 1)/component_len)
248 ap = av_malloc(component_len * count + 1);
253 for (i = 0; i < count; i++) {
254 unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep);
255 if(l >= component_len) {
261 ap0[strlen(ap0) - strlen(sep)] = '\0';
265 static int add_metadata(int count, int type,
266 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
269 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, &frame->metadata);
270 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata);
271 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata);
272 default : return AVERROR_INVALIDDATA;
276 static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
277 const uint8_t *src, int src_stride, int width, int height,
278 int is_single_comp, int is_u16);
280 static void av_always_inline horizontal_fill(TiffContext *s,
281 unsigned int bpp, uint8_t* dst,
282 int usePtr, const uint8_t *src,
283 uint8_t c, int width, int offset)
287 while (--width >= 0) {
288 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
289 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
290 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
291 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
292 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
293 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
294 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
295 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
299 while (--width >= 0) {
300 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
301 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
302 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
303 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
307 while (--width >= 0) {
308 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
309 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
315 uint16_t *dst16 = (uint16_t *)dst;
316 int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
317 uint8_t shift = is_dng ? 0 : 16 - bpp;
320 init_get_bits8(&gb, src, width);
321 for (int i = 0; i < s->width; i++) {
322 dst16[i] = get_bits(&gb, bpp) << shift;
328 memcpy(dst + offset, src, width);
330 memset(dst + offset, c, width);
335 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
339 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
340 if (!s->deinvert_buf)
341 return AVERROR(ENOMEM);
342 for (i = 0; i < size; i++)
343 s->deinvert_buf[i] = ff_reverse[src[i]];
348 static void unpack_gray(TiffContext *s, AVFrame *p,
349 const uint8_t *src, int lnum, int width, int bpp)
352 uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]);
354 init_get_bits8(&gb, src, width);
356 for (int i = 0; i < s->width; i++) {
357 dst[i] = get_bits(&gb, bpp);
361 static void unpack_yuv(TiffContext *s, AVFrame *p,
362 const uint8_t *src, int lnum)
365 int w = (s->width - 1) / s->subsampling[0] + 1;
366 uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
367 uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
368 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
369 for (i = 0; i < w; i++) {
370 for (j = 0; j < s->subsampling[1]; j++)
371 for (k = 0; k < s->subsampling[0]; k++)
372 p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
373 FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++;
378 for (i = 0; i < w; i++) {
379 for (j = 0; j < s->subsampling[1]; j++)
380 for (k = 0; k < s->subsampling[0]; k++)
381 p->data[0][(lnum + j) * p->linesize[0] +
382 i * s->subsampling[0] + k] = *src++;
390 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
393 z_stream zstream = { 0 };
396 zstream.next_in = (uint8_t *)src;
397 zstream.avail_in = size;
398 zstream.next_out = dst;
399 zstream.avail_out = *len;
400 zret = inflateInit(&zstream);
402 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
405 zret = inflate(&zstream, Z_SYNC_FLUSH);
406 inflateEnd(&zstream);
407 *len = zstream.total_out;
408 return zret == Z_STREAM_END ? Z_OK : zret;
411 static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
412 const uint8_t *src, int size, int width, int lines,
413 int strip_start, int is_yuv)
416 unsigned long outlen;
418 outlen = width * lines;
419 zbuf = av_malloc(outlen);
421 return AVERROR(ENOMEM);
423 if ((ret = deinvert_buffer(s, src, size)) < 0) {
427 src = s->deinvert_buf;
429 ret = tiff_uncompress(zbuf, &outlen, src, size);
431 av_log(s->avctx, AV_LOG_ERROR,
432 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
433 (unsigned long)width * lines, ret);
435 return AVERROR_UNKNOWN;
438 for (line = 0; line < lines; line++) {
439 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
440 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
442 memcpy(dst, src, width);
445 unpack_yuv(s, p, dst, strip_start + line);
446 line += s->subsampling[1] - 1;
457 static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src,
460 lzma_stream stream = LZMA_STREAM_INIT;
463 stream.next_in = (uint8_t *)src;
464 stream.avail_in = size;
465 stream.next_out = dst;
466 stream.avail_out = *len;
467 ret = lzma_stream_decoder(&stream, UINT64_MAX, 0);
468 if (ret != LZMA_OK) {
469 av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret);
472 ret = lzma_code(&stream, LZMA_RUN);
474 *len = stream.total_out;
475 return ret == LZMA_STREAM_END ? LZMA_OK : ret;
478 static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
479 const uint8_t *src, int size, int width, int lines,
480 int strip_start, int is_yuv)
482 uint64_t outlen = width * (uint64_t)lines;
484 uint8_t *buf = av_malloc(outlen);
486 return AVERROR(ENOMEM);
488 if ((ret = deinvert_buffer(s, src, size)) < 0) {
492 src = s->deinvert_buf;
494 ret = tiff_uncompress_lzma(buf, &outlen, src, size);
495 if (ret != LZMA_OK) {
496 av_log(s->avctx, AV_LOG_ERROR,
497 "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen,
498 (uint64_t)width * lines, ret);
500 return AVERROR_UNKNOWN;
503 for (line = 0; line < lines; line++) {
504 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
505 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
507 memcpy(dst, src, width);
510 unpack_yuv(s, p, dst, strip_start + line);
511 line += s->subsampling[1] - 1;
521 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
522 const uint8_t *src, int size, int width, int lines)
528 av_fast_padded_malloc(&s->fax_buffer, &s->fax_buffer_size, size);
529 src2 = s->fax_buffer;
532 av_log(s->avctx, AV_LOG_ERROR,
533 "Error allocating temporary buffer\n");
534 return AVERROR(ENOMEM);
537 if (!s->fill_order) {
538 memcpy(src2, src, size);
540 for (i = 0; i < size; i++)
541 src2[i] = ff_reverse[src[i]];
543 memset(src2 + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
544 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
545 s->compr, s->fax_opts);
546 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
547 for (line = 0; line < lines; line++) {
548 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
554 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame);
556 static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
557 const uint8_t *src, int size, int strip_start, int lines)
560 int c, line, pixels, code, ret;
561 const uint8_t *ssrc = src;
562 int width = ((s->width * s->bpp) + 7) >> 3;
563 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
564 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
565 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
566 desc->nb_components >= 3;
570 width /= s->bppcount;
573 return AVERROR_INVALIDDATA;
576 int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
577 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
578 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
579 if (s->yuv_line == NULL) {
580 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
581 return AVERROR(ENOMEM);
586 width = (s->width - 1) / s->subsampling[0] + 1;
587 width = width * s->subsampling[0] * s->subsampling[1] + 2*width;
588 av_assert0(width <= bytes_per_row);
589 av_assert0(s->bpp == 24);
592 av_assert0(width == (s->bpp * s->width + 7) >> 3);
594 if (p->format == AV_PIX_FMT_GRAY12) {
595 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width);
596 if (s->yuv_line == NULL) {
597 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
598 return AVERROR(ENOMEM);
604 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
606 return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines,
607 strip_start, is_yuv);
609 av_log(s->avctx, AV_LOG_ERROR,
610 "zlib support not enabled, "
611 "deflate compression not supported\n");
612 return AVERROR(ENOSYS);
615 if (s->compr == TIFF_LZMA) {
617 return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines,
618 strip_start, is_yuv);
620 av_log(s->avctx, AV_LOG_ERROR,
621 "LZMA support not enabled\n");
622 return AVERROR(ENOSYS);
625 if (s->compr == TIFF_LZW) {
627 if ((ret = deinvert_buffer(s, src, size)) < 0)
629 ssrc = src = s->deinvert_buf;
631 if (size > 1 && !src[0] && (src[1]&1)) {
632 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
634 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
635 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
638 for (line = 0; line < lines; line++) {
639 pixels = ff_lzw_decode(s->lzw, dst, width);
640 if (pixels < width) {
641 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
643 return AVERROR_INVALIDDATA;
645 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
646 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
648 unpack_yuv(s, p, dst, strip_start + line);
649 line += s->subsampling[1] - 1;
650 } else if (p->format == AV_PIX_FMT_GRAY12) {
651 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
657 if (s->compr == TIFF_CCITT_RLE ||
658 s->compr == TIFF_G3 ||
659 s->compr == TIFF_G4) {
660 if (is_yuv || p->format == AV_PIX_FMT_GRAY12)
661 return AVERROR_INVALIDDATA;
663 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
666 bytestream2_init(&s->gb, src, size);
667 bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines));
669 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
671 /* Decode JPEG-encoded DNGs with strips */
672 if (s->compr == TIFF_NEWJPEG && is_dng) {
674 av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n");
675 return AVERROR_PATCHWELCOME;
677 if ((ret = dng_decode_strip(s->avctx, p)) < 0)
682 for (line = 0; line < lines; line++) {
683 if (src - ssrc > size) {
684 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
685 return AVERROR_INVALIDDATA;
688 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
690 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
693 if (ssrc + size - src < width)
694 return AVERROR_INVALIDDATA;
696 if (!s->fill_order) {
697 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
698 dst, 1, src, 0, width, 0);
701 for (i = 0; i < width; i++)
702 dst[i] = ff_reverse[src[i]];
705 /* Color processing for DNG images with uncompressed strips (non-tiled) */
707 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
709 is_u16 = (s->bpp > 8);
710 pixel_size_bits = (is_u16 ? 16 : 8);
711 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
713 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
714 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
717 0, // no stride, only 1 line
719 0, // no stride, only 1 line
722 0, // single-component variation is only preset in JPEG-encoded DNGs
729 for (pixels = 0; pixels < width;) {
730 if (ssrc + size - src < 2) {
731 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
732 return AVERROR_INVALIDDATA;
734 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
737 if (pixels + code > width ||
738 ssrc + size - src < code) {
739 av_log(s->avctx, AV_LOG_ERROR,
740 "Copy went out of bounds\n");
741 return AVERROR_INVALIDDATA;
743 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
744 dst, 1, src, 0, code, pixels);
747 } else if (code != -128) { // -127..-1
749 if (pixels + code > width) {
750 av_log(s->avctx, AV_LOG_ERROR,
751 "Run went out of bounds\n");
752 return AVERROR_INVALIDDATA;
755 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
756 dst, 0, NULL, c, code, pixels);
762 for (i = 0; i < width; i++)
763 dst[i] = ff_reverse[dst[i]];
768 unpack_yuv(s, p, dst, strip_start + line);
769 line += s->subsampling[1] - 1;
770 } else if (p->format == AV_PIX_FMT_GRAY12) {
771 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
779 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
781 static uint16_t av_always_inline dng_process_color16(uint16_t value,
783 uint16_t black_level,
784 float scale_factor) {
787 // Lookup table lookup
791 // Black level subtraction
792 value = av_clip_uint16_c((unsigned)value - black_level);
795 value_norm = (float)value * scale_factor;
797 value = av_clip_uint16_c(value_norm * 65535);
802 static uint16_t av_always_inline dng_process_color8(uint16_t value,
804 uint16_t black_level,
805 float scale_factor) {
806 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
809 static void dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
810 const uint8_t *src, int src_stride,
811 int width, int height, int is_single_comp, int is_u16)
816 scale_factor = 1.0f / (s->white_level - s->black_level);
818 if (is_single_comp) {
820 return; /* <= 8bpp unsupported */
822 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
823 (split vertically in the middle). */
824 for (line = 0; line < height / 2; line++) {
825 uint16_t *dst_u16 = (uint16_t *)dst;
826 uint16_t *src_u16 = (uint16_t *)src;
828 /* Blit first half of input row row to initial row of output */
829 for (col = 0; col < width; col++)
830 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
832 /* Advance the destination pointer by a row (source pointer remains in the same place) */
833 dst += dst_stride * sizeof(uint16_t);
834 dst_u16 = (uint16_t *)dst;
836 /* Blit second half of input row row to next row of output */
837 for (col = 0; col < width; col++)
838 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
840 dst += dst_stride * sizeof(uint16_t);
841 src += src_stride * sizeof(uint16_t);
844 /* Input and output image are the same size and the MJpeg decoder has done per-component
845 deinterleaving, so blitting here is straightforward. */
847 for (line = 0; line < height; line++) {
848 uint16_t *dst_u16 = (uint16_t *)dst;
849 uint16_t *src_u16 = (uint16_t *)src;
851 for (col = 0; col < width; col++)
852 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
854 dst += dst_stride * sizeof(uint16_t);
855 src += src_stride * sizeof(uint16_t);
858 for (line = 0; line < height; line++) {
859 for (col = 0; col < width; col++)
860 *dst++ = dng_process_color8(*src++, s->dng_lut, s->black_level, scale_factor);
869 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
870 int tile_byte_count, int dst_x, int dst_y, int w, int h)
872 TiffContext *s = avctx->priv_data;
874 uint8_t *dst_data, *src_data;
875 uint32_t dst_offset; /* offset from dst buffer in pixels */
876 int is_single_comp, is_u16, pixel_size;
879 /* Prepare a packet and send to the MJPEG decoder */
880 av_init_packet(&jpkt);
881 jpkt.data = (uint8_t*)s->gb.buffer;
882 jpkt.size = tile_byte_count;
885 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
886 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
887 image or not from its own data (and we need that information when decoding it). */
888 mjpegdecctx->bayer = 1;
891 ret = avcodec_send_packet(s->avctx_mjpeg, &jpkt);
893 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
897 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
899 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
901 /* Normally skip, error if explode */
902 if (avctx->err_recognition & AV_EF_EXPLODE)
903 return AVERROR_INVALIDDATA;
908 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
910 /* See dng_blit for explanation */
911 is_single_comp = (s->avctx_mjpeg->width == w * 2 && s->avctx_mjpeg->height == h / 2);
913 is_u16 = (s->bpp > 8);
914 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
916 if (is_single_comp && !is_u16) {
917 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
918 av_frame_unref(s->jpgframe);
919 return AVERROR_PATCHWELCOME;
922 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
923 dst_data = frame->data[0] + dst_offset * pixel_size;
924 src_data = s->jpgframe->data[0];
928 frame->linesize[0] / pixel_size,
930 s->jpgframe->linesize[0] / pixel_size,
936 av_frame_unref(s->jpgframe);
941 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame, AVPacket *avpkt)
943 TiffContext *s = avctx->priv_data;
945 int tile_offset_offset, tile_offset;
946 int tile_byte_count_offset, tile_byte_count;
947 int tile_count_x, tile_count_y;
948 int tile_width, tile_length;
949 int has_width_leftover, has_height_leftover;
950 int tile_x = 0, tile_y = 0;
951 int pos_x = 0, pos_y = 0;
954 s->jpgframe->width = s->tile_width;
955 s->jpgframe->height = s->tile_length;
957 s->avctx_mjpeg->width = s->tile_width;
958 s->avctx_mjpeg->height = s->tile_length;
960 has_width_leftover = (s->width % s->tile_width != 0);
961 has_height_leftover = (s->height % s->tile_length != 0);
963 /* Calculate tile counts (round up) */
964 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
965 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
967 /* Iterate over the number of tiles */
968 for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) {
969 tile_x = tile_idx % tile_count_x;
970 tile_y = tile_idx / tile_count_x;
972 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
973 tile_width = s->width % s->tile_width;
975 tile_width = s->tile_width;
977 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
978 tile_length = s->height % s->tile_length;
980 tile_length = s->tile_length;
982 /* Read tile offset */
983 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
984 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
985 tile_offset = ff_tget_long(&s->gb, s->le);
987 /* Read tile byte size */
988 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
989 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
990 tile_byte_count = ff_tget_long(&s->gb, s->le);
992 /* Seek to tile data */
993 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
995 /* Decode JPEG tile and copy it in the reference frame */
996 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1001 /* Advance current positions */
1002 pos_x += tile_width;
1003 if (tile_x == tile_count_x - 1) { // If on the right edge
1005 pos_y += tile_length;
1009 /* Frame is ready to be output */
1010 frame->pict_type = AV_PICTURE_TYPE_I;
1011 frame->key_frame = 1;
1016 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame)
1018 TiffContext *s = avctx->priv_data;
1020 s->jpgframe->width = s->width;
1021 s->jpgframe->height = s->height;
1023 s->avctx_mjpeg->width = s->width;
1024 s->avctx_mjpeg->height = s->height;
1026 return dng_decode_jpeg(avctx, frame, s->stripsize, 0, 0, s->width, s->height);
1029 static int init_image(TiffContext *s, ThreadFrame *frame)
1032 int create_gray_palette = 0;
1034 // make sure there is no aliasing in the following switch
1035 if (s->bpp >= 100 || s->bppcount >= 10) {
1036 av_log(s->avctx, AV_LOG_ERROR,
1037 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1038 s->bpp, s->bppcount);
1039 return AVERROR_INVALIDDATA;
1042 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1044 if (!s->palette_is_set) {
1045 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1050 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1051 if (!s->palette_is_set) {
1052 create_gray_palette = 1;
1056 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1059 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1062 switch (AV_RL32(s->pattern)) {
1064 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1067 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1070 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1073 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1076 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1077 AV_RL32(s->pattern));
1078 return AVERROR_PATCHWELCOME;
1085 switch (AV_RL32(s->pattern)) {
1087 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1090 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1093 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1096 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1099 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1100 AV_RL32(s->pattern));
1101 return AVERROR_PATCHWELCOME;
1105 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1106 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1107 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1108 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1109 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1110 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1111 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1112 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1113 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1114 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1115 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1116 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1117 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1119 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1120 return AVERROR_PATCHWELCOME;
1123 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1126 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1129 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1132 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1135 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1138 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1139 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1141 av_log(s->avctx, AV_LOG_ERROR,
1142 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1143 return AVERROR_PATCHWELCOME;
1147 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1150 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1153 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1156 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1159 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1162 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1165 av_log(s->avctx, AV_LOG_ERROR,
1166 "This format is not supported (bpp=%d, bppcount=%d)\n",
1167 s->bpp, s->bppcount);
1168 return AVERROR_INVALIDDATA;
1171 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1172 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1173 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1174 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1175 desc->nb_components < 3) {
1176 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1177 return AVERROR_INVALIDDATA;
1181 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1182 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1186 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1188 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1189 if (!create_gray_palette)
1190 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
1192 /* make default grayscale pal */
1194 uint32_t *pal = (uint32_t *)frame->f->data[1];
1195 for (i = 0; i < 1<<s->bpp; i++)
1196 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1202 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1204 int offset = tag == TIFF_YRES ? 2 : 0;
1205 s->res[offset++] = num;
1206 s->res[offset] = den;
1207 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1208 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1209 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1210 if (num > INT64_MAX || den > INT64_MAX) {
1214 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1215 num, den, INT32_MAX);
1216 if (!s->avctx->sample_aspect_ratio.den)
1217 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1221 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1223 AVFrameSideData *sd;
1224 GetByteContext gb_temp;
1225 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1231 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1236 off = bytestream2_tell(&s->gb);
1242 value = ff_tget(&s->gb, type, s->le);
1245 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1246 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1248 av_log(s->avctx, AV_LOG_ERROR, "Invalid denominator in rational\n");
1249 return AVERROR_INVALIDDATA;
1264 s->is_thumbnail = (value != 0);
1274 av_log(s->avctx, AV_LOG_ERROR,
1275 "This format is not supported (bpp=%d, %d components)\n",
1277 return AVERROR_INVALIDDATA;
1279 s->bppcount = count;
1288 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1289 return AVERROR_INVALIDDATA;
1290 for (i = 0; i < count; i++)
1291 s->bpp += ff_tget(&s->gb, type, s->le);
1298 case TIFF_SAMPLES_PER_PIXEL:
1300 av_log(s->avctx, AV_LOG_ERROR,
1301 "Samples per pixel requires a single value, many provided\n");
1302 return AVERROR_INVALIDDATA;
1305 av_log(s->avctx, AV_LOG_ERROR,
1306 "Samples per pixel %d is too large\n", value);
1307 return AVERROR_INVALIDDATA;
1309 if (s->bppcount == 1)
1311 s->bppcount = value;
1315 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1321 case TIFF_CCITT_RLE:
1328 case TIFF_ADOBE_DEFLATE:
1332 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1333 return AVERROR(ENOSYS);
1343 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1344 return AVERROR(ENOSYS);
1347 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1349 return AVERROR_INVALIDDATA;
1352 case TIFF_ROWSPERSTRIP:
1353 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1355 s->rps = FFMIN(value, s->height);
1357 case TIFF_STRIP_OFFS:
1359 if (value > INT_MAX) {
1360 av_log(s->avctx, AV_LOG_ERROR,
1361 "strippos %u too large\n", value);
1362 return AVERROR_INVALIDDATA;
1365 s->stripoff = value;
1373 case TIFF_STRIP_SIZE:
1375 if (value > INT_MAX) {
1376 av_log(s->avctx, AV_LOG_ERROR,
1377 "stripsize %u too large\n", value);
1378 return AVERROR_INVALIDDATA;
1380 s->stripsizesoff = 0;
1381 s->stripsize = value;
1384 s->stripsizesoff = off;
1391 set_sar(s, tag, value, value2);
1393 case TIFF_TILE_OFFSETS:
1394 s->tile_offsets_offset = off;
1395 s->tile_count = count;
1398 case TIFF_TILE_BYTE_COUNTS:
1399 s->tile_byte_counts_offset = off;
1401 case TIFF_TILE_LENGTH:
1402 s->tile_length = value;
1404 case TIFF_TILE_WIDTH:
1405 s->tile_width = value;
1407 case TIFF_PREDICTOR:
1408 s->predictor = value;
1414 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1416 case DNG_LINEARIZATION_TABLE:
1417 for (int i = 0; i < FFMIN(count, 1 << s->bpp); i++)
1418 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1420 case DNG_BLACK_LEVEL:
1421 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1422 if (type == TIFF_RATIONAL) {
1423 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1424 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1426 av_log(s->avctx, AV_LOG_ERROR, "Invalid black level denominator\n");
1427 return AVERROR_INVALIDDATA;
1430 s->black_level = value / value2;
1432 s->black_level = ff_tget(&s->gb, type, s->le);
1433 av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n");
1435 s->black_level = value / value2;
1438 case DNG_WHITE_LEVEL:
1439 s->white_level = value;
1441 case TIFF_CFA_PATTERN_DIM:
1442 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1443 ff_tget(&s->gb, type, s->le) != 2)) {
1444 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1445 return AVERROR_INVALIDDATA;
1448 case TIFF_CFA_PATTERN:
1450 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1451 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1452 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1453 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1455 case TIFF_PHOTOMETRIC:
1457 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1458 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1459 case TIFF_PHOTOMETRIC_RGB:
1460 case TIFF_PHOTOMETRIC_PALETTE:
1461 case TIFF_PHOTOMETRIC_SEPARATED:
1462 case TIFF_PHOTOMETRIC_YCBCR:
1463 case TIFF_PHOTOMETRIC_CFA:
1464 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1465 s->photometric = value;
1467 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1468 case TIFF_PHOTOMETRIC_CIE_LAB:
1469 case TIFF_PHOTOMETRIC_ICC_LAB:
1470 case TIFF_PHOTOMETRIC_ITU_LAB:
1471 case TIFF_PHOTOMETRIC_LOG_L:
1472 case TIFF_PHOTOMETRIC_LOG_LUV:
1473 avpriv_report_missing_feature(s->avctx,
1474 "PhotometricInterpretation 0x%04X",
1476 return AVERROR_PATCHWELCOME;
1478 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1479 "unknown\n", value);
1480 return AVERROR_INVALIDDATA;
1483 case TIFF_FILL_ORDER:
1484 if (value < 1 || value > 2) {
1485 av_log(s->avctx, AV_LOG_ERROR,
1486 "Unknown FillOrder value %d, trying default one\n", value);
1489 s->fill_order = value - 1;
1492 GetByteContext pal_gb[3];
1493 off = type_sizes[type];
1494 if (count / 3 > 256 ||
1495 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1496 return AVERROR_INVALIDDATA;
1498 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1499 bytestream2_skip(&pal_gb[1], count / 3 * off);
1500 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1502 off = (type_sizes[type] - 1) << 3;
1504 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1505 return AVERROR_INVALIDDATA;
1508 for (i = 0; i < count / 3; i++) {
1509 uint32_t p = 0xFF000000;
1510 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1511 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1512 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1515 s->palette_is_set = 1;
1519 s->planar = value == 2;
1521 case TIFF_YCBCR_SUBSAMPLING:
1523 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1524 return AVERROR_INVALIDDATA;
1526 for (i = 0; i < count; i++) {
1527 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1528 if (s->subsampling[i] <= 0) {
1529 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1530 s->subsampling[i] = 1;
1531 return AVERROR_INVALIDDATA;
1535 case TIFF_T4OPTIONS:
1536 if (s->compr == TIFF_G3)
1537 s->fax_opts = value;
1539 case TIFF_T6OPTIONS:
1540 if (s->compr == TIFF_G4)
1541 s->fax_opts = value;
1543 #define ADD_METADATA(count, name, sep)\
1544 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1545 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1548 case TIFF_MODEL_PIXEL_SCALE:
1549 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1551 case TIFF_MODEL_TRANSFORMATION:
1552 ADD_METADATA(count, "ModelTransformationTag", NULL);
1554 case TIFF_MODEL_TIEPOINT:
1555 ADD_METADATA(count, "ModelTiepointTag", NULL);
1557 case TIFF_GEO_KEY_DIRECTORY:
1558 if (s->geotag_count) {
1559 avpriv_request_sample(s->avctx, "Multiple geo key directories\n");
1560 return AVERROR_INVALIDDATA;
1562 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1563 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1564 s->geotag_count = ff_tget_short(&s->gb, s->le);
1565 if (s->geotag_count > count / 4 - 1) {
1566 s->geotag_count = count / 4 - 1;
1567 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1569 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1570 || s->geotag_count == 0) {
1571 s->geotag_count = 0;
1574 s->geotags = av_mallocz_array(s->geotag_count, sizeof(TiffGeoTag));
1576 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1577 s->geotag_count = 0;
1580 for (i = 0; i < s->geotag_count; i++) {
1581 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1582 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1583 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1585 if (!s->geotags[i].type)
1586 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
1588 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
1591 case TIFF_GEO_DOUBLE_PARAMS:
1592 if (count >= INT_MAX / sizeof(int64_t))
1593 return AVERROR_INVALIDDATA;
1594 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1595 return AVERROR_INVALIDDATA;
1596 dp = av_malloc_array(count, sizeof(double));
1598 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1601 for (i = 0; i < count; i++)
1602 dp[i] = ff_tget_double(&s->gb, s->le);
1603 for (i = 0; i < s->geotag_count; i++) {
1604 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
1605 if (s->geotags[i].count == 0
1606 || s->geotags[i].offset + s->geotags[i].count > count) {
1607 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1608 } else if (s->geotags[i].val) {
1609 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1611 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1613 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1615 return AVERROR(ENOMEM);
1617 s->geotags[i].val = ap;
1623 case TIFF_GEO_ASCII_PARAMS:
1624 pos = bytestream2_tell(&s->gb);
1625 for (i = 0; i < s->geotag_count; i++) {
1626 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1627 if (s->geotags[i].count == 0
1628 || s->geotags[i].offset + s->geotags[i].count > count) {
1629 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1633 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1634 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1635 return AVERROR_INVALIDDATA;
1636 if (s->geotags[i].val)
1637 return AVERROR_INVALIDDATA;
1638 ap = av_malloc(s->geotags[i].count);
1640 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1641 return AVERROR(ENOMEM);
1643 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1644 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1645 s->geotags[i].val = ap;
1650 case TIFF_ICC_PROFILE:
1651 if (type != TIFF_UNDEFINED)
1652 return AVERROR_INVALIDDATA;
1655 bytestream2_seek(&gb_temp, SEEK_SET, off);
1657 if (bytestream2_get_bytes_left(&gb_temp) < count)
1658 return AVERROR_INVALIDDATA;
1660 sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count);
1662 return AVERROR(ENOMEM);
1664 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1667 ADD_METADATA(count, "artist", NULL);
1669 case TIFF_COPYRIGHT:
1670 ADD_METADATA(count, "copyright", NULL);
1673 ADD_METADATA(count, "date", NULL);
1675 case TIFF_DOCUMENT_NAME:
1676 ADD_METADATA(count, "document_name", NULL);
1678 case TIFF_HOST_COMPUTER:
1679 ADD_METADATA(count, "computer", NULL);
1681 case TIFF_IMAGE_DESCRIPTION:
1682 ADD_METADATA(count, "description", NULL);
1685 ADD_METADATA(count, "make", NULL);
1688 ADD_METADATA(count, "model", NULL);
1690 case TIFF_PAGE_NAME:
1691 ADD_METADATA(count, "page_name", NULL);
1693 case TIFF_PAGE_NUMBER:
1694 ADD_METADATA(count, "page_number", " / ");
1695 // need to seek back to re-read the page number
1696 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1697 // read the page number
1698 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1699 // get back to where we were before the previous seek
1700 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1702 case TIFF_SOFTWARE_NAME:
1703 ADD_METADATA(count, "software", NULL);
1707 unsigned int ver[4];
1708 ver[0] = ff_tget(&s->gb, type, s->le);
1709 ver[1] = ff_tget(&s->gb, type, s->le);
1710 ver[2] = ff_tget(&s->gb, type, s->le);
1711 ver[3] = ff_tget(&s->gb, type, s->le);
1713 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1714 ver[0], ver[1], ver[2], ver[3]);
1716 tiff_set_type(s, TIFF_TYPE_DNG);
1719 case CINEMADNG_TIME_CODES:
1720 case CINEMADNG_FRAME_RATE:
1721 case CINEMADNG_T_STOP:
1722 case CINEMADNG_REEL_NAME:
1723 case CINEMADNG_CAMERA_LABEL:
1724 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1727 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1728 av_log(s->avctx, AV_LOG_ERROR,
1729 "Unknown or unsupported tag %d/0x%0X\n",
1731 return AVERROR_INVALIDDATA;
1736 av_log(s->avctx, AV_LOG_ERROR,
1737 "This format is not supported (bpp=%d, %d components)\n",
1740 return AVERROR_INVALIDDATA;
1742 bytestream2_seek(&s->gb, start, SEEK_SET);
1746 static int decode_frame(AVCodecContext *avctx,
1747 void *data, int *got_frame, AVPacket *avpkt)
1749 TiffContext *const s = avctx->priv_data;
1750 AVFrame *const p = data;
1751 ThreadFrame frame = { .f = data };
1752 unsigned off, last_off;
1753 int le, ret, plane, planes;
1754 int i, j, entries, stride;
1755 unsigned soff, ssize;
1757 GetByteContext stripsizes;
1758 GetByteContext stripdata;
1759 int retry_for_subifd, retry_for_page;
1762 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1764 // parse image header
1765 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1766 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1768 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1769 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1770 return AVERROR_INVALIDDATA;
1773 // TIFF_BPP is not a required tag and defaults to 1
1775 s->tiff_type = TIFF_TYPE_TIFF;
1777 s->is_thumbnail = 0;
1778 s->bppcount = s->bpp = 1;
1779 s->photometric = TIFF_PHOTOMETRIC_NONE;
1780 s->compr = TIFF_RAW;
1788 for (i = 0; i < 65536; i++)
1793 // Reset these offsets so we can tell if they were set this frame
1794 s->stripsizesoff = s->strippos = 0;
1795 /* parse image file directory */
1796 bytestream2_seek(&s->gb, off, SEEK_SET);
1797 entries = ff_tget_short(&s->gb, le);
1798 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1799 return AVERROR_INVALIDDATA;
1800 for (i = 0; i < entries; i++) {
1801 if ((ret = tiff_decode_tag(s, p)) < 0)
1805 if (s->get_thumbnail && !s->is_thumbnail) {
1806 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1810 /** whether we should process this IFD's SubIFD */
1811 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1812 /** whether we should process this multi-page IFD's next page */
1813 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1816 if (retry_for_page) {
1817 // set offset to the next IFD
1818 off = ff_tget_long(&s->gb, le);
1819 } else if (retry_for_subifd) {
1820 // set offset to the SubIFD
1824 if (retry_for_subifd || retry_for_page) {
1826 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1827 return AVERROR_INVALIDDATA;
1829 if (off <= last_off) {
1830 avpriv_request_sample(s->avctx, "non increasing IFD offset\n");
1831 return AVERROR_INVALIDDATA;
1833 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1834 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1835 return AVERROR_INVALIDDATA;
1841 /* At this point we've decided on which (Sub)IFD to process */
1843 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1845 for (i = 0; i<s->geotag_count; i++) {
1846 const char *keyname = get_geokey_name(s->geotags[i].key);
1848 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1851 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1852 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1855 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1857 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1865 if (s->white_level == 0)
1866 s->white_level = (1 << s->bpp) - 1; /* Default value as per the spec */
1868 if (s->white_level <= s->black_level) {
1869 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1870 s->black_level, s->white_level);
1871 return AVERROR_INVALIDDATA;
1874 if (s->bpp % s->bppcount)
1875 return AVERROR_INVALIDDATA;
1876 bps = s->bpp / s->bppcount;
1877 if (bps < 8 || bps > 32)
1878 return AVERROR_INVALIDDATA;
1880 return AVERROR_PATCHWELCOME;
1883 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1884 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1885 return AVERROR_INVALIDDATA;
1888 /* now we have the data and may start decoding */
1889 if ((ret = init_image(s, &frame)) < 0)
1893 if (s->strips == 1 && !s->stripsize) {
1894 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1895 s->stripsize = avpkt->size - s->stripoff;
1898 if (s->stripsizesoff) {
1899 if (s->stripsizesoff >= (unsigned)avpkt->size)
1900 return AVERROR_INVALIDDATA;
1901 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1902 avpkt->size - s->stripsizesoff);
1905 if (s->strippos >= (unsigned)avpkt->size)
1906 return AVERROR_INVALIDDATA;
1907 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1908 avpkt->size - s->strippos);
1911 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1912 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1913 return AVERROR_INVALIDDATA;
1917 if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW ||
1918 s->photometric == TIFF_PHOTOMETRIC_CFA) {
1919 p->color_trc = AVCOL_TRC_LINEAR;
1920 } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) {
1921 p->color_trc = AVCOL_TRC_GAMMA22;
1924 /* Handle DNG images with JPEG-compressed tiles */
1926 if (is_dng && s->is_tiled) {
1928 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1929 return AVERROR_PATCHWELCOME;
1930 } else if (!s->is_bayer) {
1931 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1932 return AVERROR_PATCHWELCOME;
1934 if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0)
1940 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1942 planes = s->planar ? s->bppcount : 1;
1943 for (plane = 0; plane < planes; plane++) {
1944 uint8_t *five_planes = NULL;
1945 int remaining = avpkt->size;
1947 stride = p->linesize[plane];
1948 dst = p->data[plane];
1949 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1950 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1951 stride = stride * 5 / 4;
1953 dst = av_malloc(stride * s->height);
1955 return AVERROR(ENOMEM);
1957 for (i = 0; i < s->height; i += s->rps) {
1959 dst += s->rps * stride;
1960 if (s->stripsizesoff)
1961 ssize = ff_tget(&stripsizes, s->sstype, le);
1963 ssize = s->stripsize;
1966 soff = ff_tget(&stripdata, s->sot, le);
1970 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
1971 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1972 av_freep(&five_planes);
1973 return AVERROR_INVALIDDATA;
1976 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
1977 FFMIN(s->rps, s->height - i))) < 0) {
1978 if (avctx->err_recognition & AV_EF_EXPLODE) {
1979 av_freep(&five_planes);
1985 decoded_height = FFMIN(i, s->height);
1987 if (s->predictor == 2) {
1988 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1989 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
1990 return AVERROR_PATCHWELCOME;
1992 dst = five_planes ? five_planes : p->data[plane];
1995 soff = FFMAX(soff / s->bppcount, 1);
1996 ssize = s->width * soff;
1997 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
1998 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
1999 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
2000 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2001 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2002 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2003 for (i = 0; i < decoded_height; i++) {
2004 for (j = soff; j < ssize; j += 2)
2005 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2008 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2009 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2010 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2011 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2012 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2013 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2014 for (i = 0; i < decoded_height; i++) {
2015 for (j = soff; j < ssize; j += 2)
2016 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2020 for (i = 0; i < decoded_height; i++) {
2021 for (j = soff; j < ssize; j++)
2022 dst[j] += dst[j - soff];
2028 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2029 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2030 dst = p->data[plane];
2031 for (i = 0; i < s->height; i++) {
2032 for (j = 0; j < stride; j++)
2033 dst[j] = c - dst[j];
2038 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2039 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2040 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2041 uint8_t *src = five_planes ? five_planes : p->data[plane];
2042 dst = p->data[plane];
2043 for (i = 0; i < s->height; i++) {
2044 for (j = 0; j < s->width; j++) {
2045 int k = 255 - src[x * j + 3];
2046 int r = (255 - src[x * j ]) * k;
2047 int g = (255 - src[x * j + 1]) * k;
2048 int b = (255 - src[x * j + 2]) * k;
2049 dst[4 * j ] = r * 257 >> 16;
2050 dst[4 * j + 1] = g * 257 >> 16;
2051 dst[4 * j + 2] = b * 257 >> 16;
2052 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2055 dst += p->linesize[plane];
2057 av_freep(&five_planes);
2058 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2059 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2060 dst = p->data[plane];
2061 for (i = 0; i < s->height; i++) {
2062 for (j = 0; j < s->width; j++) {
2063 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2064 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2065 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2066 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2067 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2068 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2069 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2070 AV_WB16(dst + 8 * j + 6, 65535);
2072 dst += p->linesize[plane];
2077 if (s->planar && s->bppcount > 2) {
2078 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2079 FFSWAP(int, p->linesize[0], p->linesize[2]);
2080 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2081 FFSWAP(int, p->linesize[0], p->linesize[1]);
2084 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2085 uint16_t *dst = (uint16_t *)p->data[0];
2086 for (i = 0; i < s->height; i++) {
2087 for (j = 0; j < s->width; j++)
2088 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2098 static av_cold int tiff_init(AVCodecContext *avctx)
2100 TiffContext *s = avctx->priv_data;
2101 const AVCodec *codec;
2107 s->subsampling[1] = 1;
2109 ff_lzw_decode_open(&s->lzw);
2111 return AVERROR(ENOMEM);
2112 ff_ccitt_unpack_init();
2114 /* Allocate JPEG frame */
2115 s->jpgframe = av_frame_alloc();
2117 return AVERROR(ENOMEM);
2119 /* Prepare everything needed for JPEG decoding */
2120 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2123 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2124 if (!s->avctx_mjpeg)
2125 return AVERROR(ENOMEM);
2126 s->avctx_mjpeg->flags = avctx->flags;
2127 s->avctx_mjpeg->flags2 = avctx->flags2;
2128 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2129 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2130 ret = ff_codec_open2_recursive(s->avctx_mjpeg, codec, NULL);
2138 static av_cold int tiff_end(AVCodecContext *avctx)
2140 TiffContext *const s = avctx->priv_data;
2144 ff_lzw_decode_close(&s->lzw);
2145 av_freep(&s->deinvert_buf);
2146 s->deinvert_buf_size = 0;
2147 av_freep(&s->yuv_line);
2148 s->yuv_line_size = 0;
2149 av_freep(&s->fax_buffer);
2150 s->fax_buffer_size = 0;
2151 av_frame_free(&s->jpgframe);
2152 avcodec_free_context(&s->avctx_mjpeg);
2156 #define OFFSET(x) offsetof(TiffContext, x)
2157 static const AVOption tiff_options[] = {
2158 { "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 },
2159 { "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 },
2160 { "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 },
2164 static const AVClass tiff_decoder_class = {
2165 .class_name = "TIFF decoder",
2166 .item_name = av_default_item_name,
2167 .option = tiff_options,
2168 .version = LIBAVUTIL_VERSION_INT,
2171 AVCodec ff_tiff_decoder = {
2173 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2174 .type = AVMEDIA_TYPE_VIDEO,
2175 .id = AV_CODEC_ID_TIFF,
2176 .priv_data_size = sizeof(TiffContext),
2179 .decode = decode_frame,
2180 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2181 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
2182 .priv_class = &tiff_decoder_class,