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 = 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 if (is_dng && stride == 0)
683 return AVERROR_INVALIDDATA;
685 for (line = 0; line < lines; line++) {
686 if (src - ssrc > size) {
687 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
688 return AVERROR_INVALIDDATA;
691 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
693 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
696 if (ssrc + size - src < width)
697 return AVERROR_INVALIDDATA;
699 if (!s->fill_order) {
700 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
701 dst, 1, src, 0, width, 0);
704 for (i = 0; i < width; i++)
705 dst[i] = ff_reverse[src[i]];
708 /* Color processing for DNG images with uncompressed strips (non-tiled) */
710 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
712 is_u16 = (s->bpp > 8);
713 pixel_size_bits = (is_u16 ? 16 : 8);
714 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
716 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
717 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
720 0, // no stride, only 1 line
722 0, // no stride, only 1 line
725 0, // single-component variation is only preset in JPEG-encoded DNGs
732 for (pixels = 0; pixels < width;) {
733 if (ssrc + size - src < 2) {
734 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
735 return AVERROR_INVALIDDATA;
737 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
740 if (pixels + code > width ||
741 ssrc + size - src < code) {
742 av_log(s->avctx, AV_LOG_ERROR,
743 "Copy went out of bounds\n");
744 return AVERROR_INVALIDDATA;
746 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
747 dst, 1, src, 0, code, pixels);
750 } else if (code != -128) { // -127..-1
752 if (pixels + code > width) {
753 av_log(s->avctx, AV_LOG_ERROR,
754 "Run went out of bounds\n");
755 return AVERROR_INVALIDDATA;
758 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
759 dst, 0, NULL, c, code, pixels);
765 for (i = 0; i < width; i++)
766 dst[i] = ff_reverse[dst[i]];
771 unpack_yuv(s, p, dst, strip_start + line);
772 line += s->subsampling[1] - 1;
773 } else if (p->format == AV_PIX_FMT_GRAY12) {
774 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
782 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
784 static uint16_t av_always_inline dng_process_color16(uint16_t value,
786 uint16_t black_level,
787 float scale_factor) {
790 // Lookup table lookup
794 // Black level subtraction
795 value = av_clip_uint16_c((unsigned)value - black_level);
798 value_norm = (float)value * scale_factor;
800 value = av_clip_uint16_c(value_norm * 65535);
805 static uint16_t av_always_inline dng_process_color8(uint16_t value,
807 uint16_t black_level,
808 float scale_factor) {
809 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
812 static void dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
813 const uint8_t *src, int src_stride,
814 int width, int height, int is_single_comp, int is_u16)
819 scale_factor = 1.0f / (s->white_level - s->black_level);
821 if (is_single_comp) {
823 return; /* <= 8bpp unsupported */
825 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
826 (split vertically in the middle). */
827 for (line = 0; line < height / 2; line++) {
828 uint16_t *dst_u16 = (uint16_t *)dst;
829 uint16_t *src_u16 = (uint16_t *)src;
831 /* Blit first half of input row row to initial row of output */
832 for (col = 0; col < width; col++)
833 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
835 /* Advance the destination pointer by a row (source pointer remains in the same place) */
836 dst += dst_stride * sizeof(uint16_t);
837 dst_u16 = (uint16_t *)dst;
839 /* Blit second half of input row row to next row of output */
840 for (col = 0; col < width; col++)
841 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
843 dst += dst_stride * sizeof(uint16_t);
844 src += src_stride * sizeof(uint16_t);
847 /* Input and output image are the same size and the MJpeg decoder has done per-component
848 deinterleaving, so blitting here is straightforward. */
850 for (line = 0; line < height; line++) {
851 uint16_t *dst_u16 = (uint16_t *)dst;
852 uint16_t *src_u16 = (uint16_t *)src;
854 for (col = 0; col < width; col++)
855 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
857 dst += dst_stride * sizeof(uint16_t);
858 src += src_stride * sizeof(uint16_t);
861 for (line = 0; line < height; line++) {
862 uint8_t *dst_u8 = dst;
863 const uint8_t *src_u8 = src;
865 for (col = 0; col < width; col++)
866 *dst_u8++ = dng_process_color8(*src_u8++, s->dng_lut, s->black_level, scale_factor);
875 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
876 int tile_byte_count, int dst_x, int dst_y, int w, int h)
878 TiffContext *s = avctx->priv_data;
880 uint8_t *dst_data, *src_data;
881 uint32_t dst_offset; /* offset from dst buffer in pixels */
882 int is_single_comp, is_u16, pixel_size;
885 /* Prepare a packet and send to the MJPEG decoder */
886 av_init_packet(&jpkt);
887 jpkt.data = (uint8_t*)s->gb.buffer;
888 jpkt.size = tile_byte_count;
891 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
892 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
893 image or not from its own data (and we need that information when decoding it). */
894 mjpegdecctx->bayer = 1;
897 ret = avcodec_send_packet(s->avctx_mjpeg, &jpkt);
899 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
903 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
905 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
907 /* Normally skip, error if explode */
908 if (avctx->err_recognition & AV_EF_EXPLODE)
909 return AVERROR_INVALIDDATA;
914 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
916 /* See dng_blit for explanation */
917 is_single_comp = (s->avctx_mjpeg->width == w * 2 && s->avctx_mjpeg->height == h / 2);
919 is_u16 = (s->bpp > 8);
920 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
922 if (is_single_comp && !is_u16) {
923 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
924 av_frame_unref(s->jpgframe);
925 return AVERROR_PATCHWELCOME;
928 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
929 dst_data = frame->data[0] + dst_offset * pixel_size;
930 src_data = s->jpgframe->data[0];
934 frame->linesize[0] / pixel_size,
936 s->jpgframe->linesize[0] / pixel_size,
942 av_frame_unref(s->jpgframe);
947 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame, AVPacket *avpkt)
949 TiffContext *s = avctx->priv_data;
951 int tile_offset_offset, tile_offset;
952 int tile_byte_count_offset, tile_byte_count;
953 int tile_count_x, tile_count_y;
954 int tile_width, tile_length;
955 int has_width_leftover, has_height_leftover;
956 int tile_x = 0, tile_y = 0;
957 int pos_x = 0, pos_y = 0;
960 s->jpgframe->width = s->tile_width;
961 s->jpgframe->height = s->tile_length;
963 s->avctx_mjpeg->width = s->tile_width;
964 s->avctx_mjpeg->height = s->tile_length;
966 has_width_leftover = (s->width % s->tile_width != 0);
967 has_height_leftover = (s->height % s->tile_length != 0);
969 /* Calculate tile counts (round up) */
970 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
971 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
973 /* Iterate over the number of tiles */
974 for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) {
975 tile_x = tile_idx % tile_count_x;
976 tile_y = tile_idx / tile_count_x;
978 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
979 tile_width = s->width % s->tile_width;
981 tile_width = s->tile_width;
983 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
984 tile_length = s->height % s->tile_length;
986 tile_length = s->tile_length;
988 /* Read tile offset */
989 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
990 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
991 tile_offset = ff_tget_long(&s->gb, s->le);
993 /* Read tile byte size */
994 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
995 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
996 tile_byte_count = ff_tget_long(&s->gb, s->le);
998 /* Seek to tile data */
999 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
1001 /* Decode JPEG tile and copy it in the reference frame */
1002 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1007 /* Advance current positions */
1008 pos_x += tile_width;
1009 if (tile_x == tile_count_x - 1) { // If on the right edge
1011 pos_y += tile_length;
1015 /* Frame is ready to be output */
1016 frame->pict_type = AV_PICTURE_TYPE_I;
1017 frame->key_frame = 1;
1022 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame)
1024 TiffContext *s = avctx->priv_data;
1026 s->jpgframe->width = s->width;
1027 s->jpgframe->height = s->height;
1029 s->avctx_mjpeg->width = s->width;
1030 s->avctx_mjpeg->height = s->height;
1032 return dng_decode_jpeg(avctx, frame, s->stripsize, 0, 0, s->width, s->height);
1035 static int init_image(TiffContext *s, ThreadFrame *frame)
1038 int create_gray_palette = 0;
1040 // make sure there is no aliasing in the following switch
1041 if (s->bpp >= 100 || s->bppcount >= 10) {
1042 av_log(s->avctx, AV_LOG_ERROR,
1043 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1044 s->bpp, s->bppcount);
1045 return AVERROR_INVALIDDATA;
1048 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1050 if (!s->palette_is_set) {
1051 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1056 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1057 if (!s->palette_is_set) {
1058 create_gray_palette = 1;
1062 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1065 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1068 switch (AV_RL32(s->pattern)) {
1070 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1073 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1076 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1079 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1082 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1083 AV_RL32(s->pattern));
1084 return AVERROR_PATCHWELCOME;
1091 switch (AV_RL32(s->pattern)) {
1093 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1096 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1099 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1102 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1105 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1106 AV_RL32(s->pattern));
1107 return AVERROR_PATCHWELCOME;
1111 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1112 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1113 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1114 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1115 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1116 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1117 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1118 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1119 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1120 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1121 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1122 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1123 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1125 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1126 return AVERROR_PATCHWELCOME;
1129 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1132 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1135 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1138 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1141 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1144 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1145 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1147 av_log(s->avctx, AV_LOG_ERROR,
1148 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1149 return AVERROR_PATCHWELCOME;
1153 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1156 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1159 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1162 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1165 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1168 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1171 av_log(s->avctx, AV_LOG_ERROR,
1172 "This format is not supported (bpp=%d, bppcount=%d)\n",
1173 s->bpp, s->bppcount);
1174 return AVERROR_INVALIDDATA;
1177 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1178 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1179 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1180 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1181 desc->nb_components < 3) {
1182 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1183 return AVERROR_INVALIDDATA;
1187 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1188 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1192 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1194 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1195 if (!create_gray_palette)
1196 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
1198 /* make default grayscale pal */
1200 uint32_t *pal = (uint32_t *)frame->f->data[1];
1201 for (i = 0; i < 1<<s->bpp; i++)
1202 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1208 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1210 int offset = tag == TIFF_YRES ? 2 : 0;
1211 s->res[offset++] = num;
1212 s->res[offset] = den;
1213 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1214 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1215 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1216 if (num > INT64_MAX || den > INT64_MAX) {
1220 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1221 num, den, INT32_MAX);
1222 if (!s->avctx->sample_aspect_ratio.den)
1223 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1227 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1229 AVFrameSideData *sd;
1230 GetByteContext gb_temp;
1231 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1237 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1242 off = bytestream2_tell(&s->gb);
1248 value = ff_tget(&s->gb, type, s->le);
1251 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1252 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1254 av_log(s->avctx, AV_LOG_ERROR, "Invalid denominator in rational\n");
1255 return AVERROR_INVALIDDATA;
1270 s->is_thumbnail = (value != 0);
1280 av_log(s->avctx, AV_LOG_ERROR,
1281 "This format is not supported (bpp=%d, %d components)\n",
1283 return AVERROR_INVALIDDATA;
1285 s->bppcount = count;
1294 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1295 return AVERROR_INVALIDDATA;
1296 for (i = 0; i < count; i++)
1297 s->bpp += ff_tget(&s->gb, type, s->le);
1304 case TIFF_SAMPLES_PER_PIXEL:
1306 av_log(s->avctx, AV_LOG_ERROR,
1307 "Samples per pixel requires a single value, many provided\n");
1308 return AVERROR_INVALIDDATA;
1311 av_log(s->avctx, AV_LOG_ERROR,
1312 "Samples per pixel %d is too large\n", value);
1313 return AVERROR_INVALIDDATA;
1315 if (s->bppcount == 1)
1317 s->bppcount = value;
1321 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1327 case TIFF_CCITT_RLE:
1334 case TIFF_ADOBE_DEFLATE:
1338 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1339 return AVERROR(ENOSYS);
1349 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1350 return AVERROR(ENOSYS);
1353 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1355 return AVERROR_INVALIDDATA;
1358 case TIFF_ROWSPERSTRIP:
1359 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1361 s->rps = FFMIN(value, s->height);
1363 case TIFF_STRIP_OFFS:
1365 if (value > INT_MAX) {
1366 av_log(s->avctx, AV_LOG_ERROR,
1367 "strippos %u too large\n", value);
1368 return AVERROR_INVALIDDATA;
1371 s->stripoff = value;
1379 case TIFF_STRIP_SIZE:
1381 if (value > INT_MAX) {
1382 av_log(s->avctx, AV_LOG_ERROR,
1383 "stripsize %u too large\n", value);
1384 return AVERROR_INVALIDDATA;
1386 s->stripsizesoff = 0;
1387 s->stripsize = value;
1390 s->stripsizesoff = off;
1397 set_sar(s, tag, value, value2);
1399 case TIFF_TILE_OFFSETS:
1400 s->tile_offsets_offset = off;
1401 s->tile_count = count;
1404 case TIFF_TILE_BYTE_COUNTS:
1405 s->tile_byte_counts_offset = off;
1407 case TIFF_TILE_LENGTH:
1408 s->tile_length = value;
1410 case TIFF_TILE_WIDTH:
1411 s->tile_width = value;
1413 case TIFF_PREDICTOR:
1414 s->predictor = value;
1420 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1422 case DNG_LINEARIZATION_TABLE:
1423 for (int i = 0; i < FFMIN(count, 1 << s->bpp); i++)
1424 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1426 case DNG_BLACK_LEVEL:
1427 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1428 if (type == TIFF_RATIONAL) {
1429 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1430 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1432 av_log(s->avctx, AV_LOG_ERROR, "Invalid black level denominator\n");
1433 return AVERROR_INVALIDDATA;
1436 s->black_level = value / value2;
1438 s->black_level = ff_tget(&s->gb, type, s->le);
1439 av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n");
1441 s->black_level = value / value2;
1444 case DNG_WHITE_LEVEL:
1445 s->white_level = value;
1447 case TIFF_CFA_PATTERN_DIM:
1448 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1449 ff_tget(&s->gb, type, s->le) != 2)) {
1450 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1451 return AVERROR_INVALIDDATA;
1454 case TIFF_CFA_PATTERN:
1456 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1457 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1458 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1459 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1461 case TIFF_PHOTOMETRIC:
1463 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1464 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1465 case TIFF_PHOTOMETRIC_RGB:
1466 case TIFF_PHOTOMETRIC_PALETTE:
1467 case TIFF_PHOTOMETRIC_SEPARATED:
1468 case TIFF_PHOTOMETRIC_YCBCR:
1469 case TIFF_PHOTOMETRIC_CFA:
1470 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1471 s->photometric = value;
1473 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1474 case TIFF_PHOTOMETRIC_CIE_LAB:
1475 case TIFF_PHOTOMETRIC_ICC_LAB:
1476 case TIFF_PHOTOMETRIC_ITU_LAB:
1477 case TIFF_PHOTOMETRIC_LOG_L:
1478 case TIFF_PHOTOMETRIC_LOG_LUV:
1479 avpriv_report_missing_feature(s->avctx,
1480 "PhotometricInterpretation 0x%04X",
1482 return AVERROR_PATCHWELCOME;
1484 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1485 "unknown\n", value);
1486 return AVERROR_INVALIDDATA;
1489 case TIFF_FILL_ORDER:
1490 if (value < 1 || value > 2) {
1491 av_log(s->avctx, AV_LOG_ERROR,
1492 "Unknown FillOrder value %d, trying default one\n", value);
1495 s->fill_order = value - 1;
1498 GetByteContext pal_gb[3];
1499 off = type_sizes[type];
1500 if (count / 3 > 256 ||
1501 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1502 return AVERROR_INVALIDDATA;
1504 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1505 bytestream2_skip(&pal_gb[1], count / 3 * off);
1506 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1508 off = (type_sizes[type] - 1) << 3;
1510 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1511 return AVERROR_INVALIDDATA;
1514 for (i = 0; i < count / 3; i++) {
1515 uint32_t p = 0xFF000000;
1516 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1517 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1518 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1521 s->palette_is_set = 1;
1525 s->planar = value == 2;
1527 case TIFF_YCBCR_SUBSAMPLING:
1529 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1530 return AVERROR_INVALIDDATA;
1532 for (i = 0; i < count; i++) {
1533 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1534 if (s->subsampling[i] <= 0) {
1535 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1536 s->subsampling[i] = 1;
1537 return AVERROR_INVALIDDATA;
1541 case TIFF_T4OPTIONS:
1542 if (s->compr == TIFF_G3)
1543 s->fax_opts = value;
1545 case TIFF_T6OPTIONS:
1546 if (s->compr == TIFF_G4)
1547 s->fax_opts = value;
1549 #define ADD_METADATA(count, name, sep)\
1550 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1551 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1554 case TIFF_MODEL_PIXEL_SCALE:
1555 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1557 case TIFF_MODEL_TRANSFORMATION:
1558 ADD_METADATA(count, "ModelTransformationTag", NULL);
1560 case TIFF_MODEL_TIEPOINT:
1561 ADD_METADATA(count, "ModelTiepointTag", NULL);
1563 case TIFF_GEO_KEY_DIRECTORY:
1564 if (s->geotag_count) {
1565 avpriv_request_sample(s->avctx, "Multiple geo key directories\n");
1566 return AVERROR_INVALIDDATA;
1568 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1569 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1570 s->geotag_count = ff_tget_short(&s->gb, s->le);
1571 if (s->geotag_count > count / 4 - 1) {
1572 s->geotag_count = count / 4 - 1;
1573 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1575 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1576 || s->geotag_count == 0) {
1577 s->geotag_count = 0;
1580 s->geotags = av_mallocz_array(s->geotag_count, sizeof(TiffGeoTag));
1582 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1583 s->geotag_count = 0;
1586 for (i = 0; i < s->geotag_count; i++) {
1587 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1588 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1589 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1591 if (!s->geotags[i].type)
1592 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
1594 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
1597 case TIFF_GEO_DOUBLE_PARAMS:
1598 if (count >= INT_MAX / sizeof(int64_t))
1599 return AVERROR_INVALIDDATA;
1600 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1601 return AVERROR_INVALIDDATA;
1602 dp = av_malloc_array(count, sizeof(double));
1604 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1607 for (i = 0; i < count; i++)
1608 dp[i] = ff_tget_double(&s->gb, s->le);
1609 for (i = 0; i < s->geotag_count; i++) {
1610 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
1611 if (s->geotags[i].count == 0
1612 || s->geotags[i].offset + s->geotags[i].count > count) {
1613 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1614 } else if (s->geotags[i].val) {
1615 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1617 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1619 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1621 return AVERROR(ENOMEM);
1623 s->geotags[i].val = ap;
1629 case TIFF_GEO_ASCII_PARAMS:
1630 pos = bytestream2_tell(&s->gb);
1631 for (i = 0; i < s->geotag_count; i++) {
1632 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1633 if (s->geotags[i].count == 0
1634 || s->geotags[i].offset + s->geotags[i].count > count) {
1635 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1639 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1640 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1641 return AVERROR_INVALIDDATA;
1642 if (s->geotags[i].val)
1643 return AVERROR_INVALIDDATA;
1644 ap = av_malloc(s->geotags[i].count);
1646 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1647 return AVERROR(ENOMEM);
1649 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1650 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1651 s->geotags[i].val = ap;
1656 case TIFF_ICC_PROFILE:
1657 if (type != TIFF_UNDEFINED)
1658 return AVERROR_INVALIDDATA;
1661 bytestream2_seek(&gb_temp, SEEK_SET, off);
1663 if (bytestream2_get_bytes_left(&gb_temp) < count)
1664 return AVERROR_INVALIDDATA;
1666 sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count);
1668 return AVERROR(ENOMEM);
1670 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1673 ADD_METADATA(count, "artist", NULL);
1675 case TIFF_COPYRIGHT:
1676 ADD_METADATA(count, "copyright", NULL);
1679 ADD_METADATA(count, "date", NULL);
1681 case TIFF_DOCUMENT_NAME:
1682 ADD_METADATA(count, "document_name", NULL);
1684 case TIFF_HOST_COMPUTER:
1685 ADD_METADATA(count, "computer", NULL);
1687 case TIFF_IMAGE_DESCRIPTION:
1688 ADD_METADATA(count, "description", NULL);
1691 ADD_METADATA(count, "make", NULL);
1694 ADD_METADATA(count, "model", NULL);
1696 case TIFF_PAGE_NAME:
1697 ADD_METADATA(count, "page_name", NULL);
1699 case TIFF_PAGE_NUMBER:
1700 ADD_METADATA(count, "page_number", " / ");
1701 // need to seek back to re-read the page number
1702 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1703 // read the page number
1704 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1705 // get back to where we were before the previous seek
1706 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1708 case TIFF_SOFTWARE_NAME:
1709 ADD_METADATA(count, "software", NULL);
1713 unsigned int ver[4];
1714 ver[0] = ff_tget(&s->gb, type, s->le);
1715 ver[1] = ff_tget(&s->gb, type, s->le);
1716 ver[2] = ff_tget(&s->gb, type, s->le);
1717 ver[3] = ff_tget(&s->gb, type, s->le);
1719 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1720 ver[0], ver[1], ver[2], ver[3]);
1722 tiff_set_type(s, TIFF_TYPE_DNG);
1725 case CINEMADNG_TIME_CODES:
1726 case CINEMADNG_FRAME_RATE:
1727 case CINEMADNG_T_STOP:
1728 case CINEMADNG_REEL_NAME:
1729 case CINEMADNG_CAMERA_LABEL:
1730 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1733 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1734 av_log(s->avctx, AV_LOG_ERROR,
1735 "Unknown or unsupported tag %d/0x%0X\n",
1737 return AVERROR_INVALIDDATA;
1742 av_log(s->avctx, AV_LOG_ERROR,
1743 "This format is not supported (bpp=%d, %d components)\n",
1746 return AVERROR_INVALIDDATA;
1748 bytestream2_seek(&s->gb, start, SEEK_SET);
1752 static int decode_frame(AVCodecContext *avctx,
1753 void *data, int *got_frame, AVPacket *avpkt)
1755 TiffContext *const s = avctx->priv_data;
1756 AVFrame *const p = data;
1757 ThreadFrame frame = { .f = data };
1758 unsigned off, last_off;
1759 int le, ret, plane, planes;
1760 int i, j, entries, stride;
1761 unsigned soff, ssize;
1763 GetByteContext stripsizes;
1764 GetByteContext stripdata;
1765 int retry_for_subifd, retry_for_page;
1767 int has_tile_bits, has_strip_bits;
1769 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1771 // parse image header
1772 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1773 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1775 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1776 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1777 return AVERROR_INVALIDDATA;
1780 // TIFF_BPP is not a required tag and defaults to 1
1782 s->tiff_type = TIFF_TYPE_TIFF;
1784 s->is_thumbnail = 0;
1785 s->bppcount = s->bpp = 1;
1786 s->photometric = TIFF_PHOTOMETRIC_NONE;
1787 s->compr = TIFF_RAW;
1795 for (i = 0; i < 65536; i++)
1800 // Reset these offsets so we can tell if they were set this frame
1801 s->stripsizesoff = s->strippos = 0;
1802 /* parse image file directory */
1803 bytestream2_seek(&s->gb, off, SEEK_SET);
1804 entries = ff_tget_short(&s->gb, le);
1805 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1806 return AVERROR_INVALIDDATA;
1807 for (i = 0; i < entries; i++) {
1808 if ((ret = tiff_decode_tag(s, p)) < 0)
1812 if (s->get_thumbnail && !s->is_thumbnail) {
1813 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1817 /** whether we should process this IFD's SubIFD */
1818 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1819 /** whether we should process this multi-page IFD's next page */
1820 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1823 if (retry_for_page) {
1824 // set offset to the next IFD
1825 off = ff_tget_long(&s->gb, le);
1826 } else if (retry_for_subifd) {
1827 // set offset to the SubIFD
1831 if (retry_for_subifd || retry_for_page) {
1833 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1834 return AVERROR_INVALIDDATA;
1836 if (off <= last_off) {
1837 avpriv_request_sample(s->avctx, "non increasing IFD offset\n");
1838 return AVERROR_INVALIDDATA;
1840 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1841 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1842 return AVERROR_INVALIDDATA;
1848 /* At this point we've decided on which (Sub)IFD to process */
1850 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1852 for (i = 0; i<s->geotag_count; i++) {
1853 const char *keyname = get_geokey_name(s->geotags[i].key);
1855 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1858 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1859 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1862 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1864 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1872 if (s->white_level == 0)
1873 s->white_level = (1 << s->bpp) - 1; /* Default value as per the spec */
1875 if (s->white_level <= s->black_level) {
1876 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1877 s->black_level, s->white_level);
1878 return AVERROR_INVALIDDATA;
1881 if (s->bpp % s->bppcount)
1882 return AVERROR_INVALIDDATA;
1883 bps = s->bpp / s->bppcount;
1884 if (bps < 8 || bps > 32)
1885 return AVERROR_INVALIDDATA;
1887 return AVERROR_PATCHWELCOME;
1890 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1891 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1892 return AVERROR_INVALIDDATA;
1895 has_tile_bits = s->is_tiled || s->tile_byte_counts_offset || s->tile_offsets_offset || s->tile_width || s->tile_length || s->tile_count;
1896 has_strip_bits = s->strippos || s->strips || s->stripoff || s->rps || s->sot || s->sstype || s->stripsize || s->stripsizesoff;
1898 if (has_tile_bits && has_strip_bits) {
1899 av_log(avctx, AV_LOG_ERROR, "Tiled TIFF is not allowed to strip\n");
1900 return AVERROR_INVALIDDATA;
1903 /* now we have the data and may start decoding */
1904 if ((ret = init_image(s, &frame)) < 0)
1908 if (s->strips == 1 && !s->stripsize) {
1909 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1910 s->stripsize = avpkt->size - s->stripoff;
1913 if (s->stripsizesoff) {
1914 if (s->stripsizesoff >= (unsigned)avpkt->size)
1915 return AVERROR_INVALIDDATA;
1916 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1917 avpkt->size - s->stripsizesoff);
1920 if (s->strippos >= (unsigned)avpkt->size)
1921 return AVERROR_INVALIDDATA;
1922 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1923 avpkt->size - s->strippos);
1926 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1927 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1928 return AVERROR_INVALIDDATA;
1932 if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW ||
1933 s->photometric == TIFF_PHOTOMETRIC_CFA) {
1934 p->color_trc = AVCOL_TRC_LINEAR;
1935 } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) {
1936 p->color_trc = AVCOL_TRC_GAMMA22;
1939 /* Handle DNG images with JPEG-compressed tiles */
1941 if (is_dng && s->is_tiled) {
1943 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1944 return AVERROR_PATCHWELCOME;
1945 } else if (!s->is_bayer) {
1946 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1947 return AVERROR_PATCHWELCOME;
1949 if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0)
1955 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1957 planes = s->planar ? s->bppcount : 1;
1958 for (plane = 0; plane < planes; plane++) {
1959 uint8_t *five_planes = NULL;
1960 int remaining = avpkt->size;
1962 stride = p->linesize[plane];
1963 dst = p->data[plane];
1964 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1965 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1966 stride = stride * 5 / 4;
1968 dst = av_malloc(stride * s->height);
1970 return AVERROR(ENOMEM);
1972 for (i = 0; i < s->height; i += s->rps) {
1974 dst += s->rps * stride;
1975 if (s->stripsizesoff)
1976 ssize = ff_tget(&stripsizes, s->sstype, le);
1978 ssize = s->stripsize;
1981 soff = ff_tget(&stripdata, s->sot, le);
1985 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
1986 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1987 av_freep(&five_planes);
1988 return AVERROR_INVALIDDATA;
1991 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
1992 FFMIN(s->rps, s->height - i))) < 0) {
1993 if (avctx->err_recognition & AV_EF_EXPLODE) {
1994 av_freep(&five_planes);
2000 decoded_height = FFMIN(i, s->height);
2002 if (s->predictor == 2) {
2003 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
2004 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
2005 return AVERROR_PATCHWELCOME;
2007 dst = five_planes ? five_planes : p->data[plane];
2010 soff = FFMAX(soff / s->bppcount, 1);
2011 ssize = s->width * soff;
2012 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
2013 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
2014 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
2015 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2016 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2017 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2018 for (i = 0; i < decoded_height; i++) {
2019 for (j = soff; j < ssize; j += 2)
2020 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2023 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2024 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2025 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2026 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2027 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2028 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2029 for (i = 0; i < decoded_height; i++) {
2030 for (j = soff; j < ssize; j += 2)
2031 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2035 for (i = 0; i < decoded_height; i++) {
2036 for (j = soff; j < ssize; j++)
2037 dst[j] += dst[j - soff];
2043 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2044 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2045 dst = p->data[plane];
2046 for (i = 0; i < s->height; i++) {
2047 for (j = 0; j < stride; j++)
2048 dst[j] = c - dst[j];
2053 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2054 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2055 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2056 uint8_t *src = five_planes ? five_planes : p->data[plane];
2057 dst = p->data[plane];
2058 for (i = 0; i < s->height; i++) {
2059 for (j = 0; j < s->width; j++) {
2060 int k = 255 - src[x * j + 3];
2061 int r = (255 - src[x * j ]) * k;
2062 int g = (255 - src[x * j + 1]) * k;
2063 int b = (255 - src[x * j + 2]) * k;
2064 dst[4 * j ] = r * 257 >> 16;
2065 dst[4 * j + 1] = g * 257 >> 16;
2066 dst[4 * j + 2] = b * 257 >> 16;
2067 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2070 dst += p->linesize[plane];
2072 av_freep(&five_planes);
2073 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2074 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2075 dst = p->data[plane];
2076 for (i = 0; i < s->height; i++) {
2077 for (j = 0; j < s->width; j++) {
2078 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2079 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2080 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2081 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2082 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2083 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2084 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2085 AV_WB16(dst + 8 * j + 6, 65535);
2087 dst += p->linesize[plane];
2092 if (s->planar && s->bppcount > 2) {
2093 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2094 FFSWAP(int, p->linesize[0], p->linesize[2]);
2095 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2096 FFSWAP(int, p->linesize[0], p->linesize[1]);
2099 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2100 uint16_t *dst = (uint16_t *)p->data[0];
2101 for (i = 0; i < s->height; i++) {
2102 for (j = 0; j < s->width; j++)
2103 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2113 static av_cold int tiff_init(AVCodecContext *avctx)
2115 TiffContext *s = avctx->priv_data;
2116 const AVCodec *codec;
2122 s->subsampling[1] = 1;
2124 ff_lzw_decode_open(&s->lzw);
2126 return AVERROR(ENOMEM);
2127 ff_ccitt_unpack_init();
2129 /* Allocate JPEG frame */
2130 s->jpgframe = av_frame_alloc();
2132 return AVERROR(ENOMEM);
2134 /* Prepare everything needed for JPEG decoding */
2135 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2138 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2139 if (!s->avctx_mjpeg)
2140 return AVERROR(ENOMEM);
2141 s->avctx_mjpeg->flags = avctx->flags;
2142 s->avctx_mjpeg->flags2 = avctx->flags2;
2143 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2144 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2145 ret = ff_codec_open2_recursive(s->avctx_mjpeg, codec, NULL);
2153 static av_cold int tiff_end(AVCodecContext *avctx)
2155 TiffContext *const s = avctx->priv_data;
2159 ff_lzw_decode_close(&s->lzw);
2160 av_freep(&s->deinvert_buf);
2161 s->deinvert_buf_size = 0;
2162 av_freep(&s->yuv_line);
2163 s->yuv_line_size = 0;
2164 av_freep(&s->fax_buffer);
2165 s->fax_buffer_size = 0;
2166 av_frame_free(&s->jpgframe);
2167 avcodec_free_context(&s->avctx_mjpeg);
2171 #define OFFSET(x) offsetof(TiffContext, x)
2172 static const AVOption tiff_options[] = {
2173 { "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 },
2174 { "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 },
2175 { "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 },
2179 static const AVClass tiff_decoder_class = {
2180 .class_name = "TIFF decoder",
2181 .item_name = av_default_item_name,
2182 .option = tiff_options,
2183 .version = LIBAVUTIL_VERSION_INT,
2186 AVCodec ff_tiff_decoder = {
2188 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2189 .type = AVMEDIA_TYPE_VIDEO,
2190 .id = AV_CODEC_ID_TIFF,
2191 .priv_data_size = sizeof(TiffContext),
2194 .decode = decode_frame,
2195 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2196 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
2197 .priv_class = &tiff_decoder_class,