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 const uint16_t *dng_lut; // Pointer to DNG linearization table
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 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;
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));
715 0, // no stride, only 1 line
717 0, // no stride, only 1 line
718 width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount, // need to account for [1, 16] bpp
720 0, // single-component variation is only preset in JPEG-encoded DNGs
727 for (pixels = 0; pixels < width;) {
728 if (ssrc + size - src < 2) {
729 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
730 return AVERROR_INVALIDDATA;
732 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
735 if (pixels + code > width ||
736 ssrc + size - src < code) {
737 av_log(s->avctx, AV_LOG_ERROR,
738 "Copy went out of bounds\n");
739 return AVERROR_INVALIDDATA;
741 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
742 dst, 1, src, 0, code, pixels);
745 } else if (code != -128) { // -127..-1
747 if (pixels + code > width) {
748 av_log(s->avctx, AV_LOG_ERROR,
749 "Run went out of bounds\n");
750 return AVERROR_INVALIDDATA;
753 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
754 dst, 0, NULL, c, code, pixels);
760 for (i = 0; i < width; i++)
761 dst[i] = ff_reverse[dst[i]];
766 unpack_yuv(s, p, dst, strip_start + line);
767 line += s->subsampling[1] - 1;
768 } else if (p->format == AV_PIX_FMT_GRAY12) {
769 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
776 static float av_always_inline linear_to_srgb(float value) {
777 if (value <= 0.0031308f)
778 return value * 12.92f;
780 return powf(value * 1.055f, 1.0f / 2.4f) - 0.055f;
784 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
785 * Then convert to sRGB color space.
787 static uint16_t av_always_inline dng_process_color16(uint16_t value,
789 uint16_t black_level,
790 float scale_factor) {
793 // Lookup table lookup
797 // Black level subtraction
798 value = av_clip_uint16_c((unsigned)value - black_level);
801 value_norm = (float)value * scale_factor;
803 // Color space conversion (sRGB)
804 value = av_clip_uint16_c((uint16_t)(linear_to_srgb(value_norm) * 0xFFFF));
809 static uint16_t av_always_inline dng_process_color8(uint16_t value,
811 uint16_t black_level,
812 float scale_factor) {
813 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
816 static void dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
817 const uint8_t *src, int src_stride,
818 int width, int height, int is_single_comp, int is_u16)
823 scale_factor = 1.0f / (s->white_level - s->black_level);
825 if (is_single_comp) {
827 return; /* <= 8bpp unsupported */
829 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
830 (split vertically in the middle). */
831 for (line = 0; line < height / 2; line++) {
832 uint16_t *dst_u16 = (uint16_t *)dst;
833 uint16_t *src_u16 = (uint16_t *)src;
835 /* Blit first half of input row row to initial row of output */
836 for (col = 0; col < width; col++)
837 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
839 /* Advance the destination pointer by a row (source pointer remains in the same place) */
840 dst += dst_stride * sizeof(uint16_t);
841 dst_u16 = (uint16_t *)dst;
843 /* Blit second half of input row row to next row of output */
844 for (col = 0; col < width; col++)
845 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
847 dst += dst_stride * sizeof(uint16_t);
848 src += src_stride * sizeof(uint16_t);
851 /* Input and output image are the same size and the MJpeg decoder has done per-component
852 deinterleaving, so blitting here is straightforward. */
854 for (line = 0; line < height; line++) {
855 uint16_t *dst_u16 = (uint16_t *)dst;
856 uint16_t *src_u16 = (uint16_t *)src;
858 for (col = 0; col < width; col++)
859 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
861 dst += dst_stride * sizeof(uint16_t);
862 src += src_stride * sizeof(uint16_t);
865 for (line = 0; line < height; line++) {
866 for (col = 0; col < width; col++)
867 *dst++ = dng_process_color8(*src++, s->dng_lut, s->black_level, scale_factor);
876 static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame,
877 int tile_byte_count, int dst_x, int dst_y, int w, int h)
879 TiffContext *s = avctx->priv_data;
881 uint8_t *dst_data, *src_data;
882 uint32_t dst_offset; /* offset from dst buffer in pixels */
883 int is_single_comp, is_u16, pixel_size;
886 /* Prepare a packet and send to the MJPEG decoder */
887 av_init_packet(&jpkt);
888 jpkt.data = (uint8_t*)s->gb.buffer;
889 jpkt.size = tile_byte_count;
892 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
893 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
894 image or not from its own data (and we need that information when decoding it). */
895 mjpegdecctx->bayer = 1;
898 ret = avcodec_send_packet(s->avctx_mjpeg, &jpkt);
900 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
904 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
906 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
908 /* Normally skip, error if explode */
909 if (avctx->err_recognition & AV_EF_EXPLODE)
910 return AVERROR_INVALIDDATA;
915 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
917 /* See dng_blit for explanation */
918 is_single_comp = (s->avctx_mjpeg->width == w * 2 && s->avctx_mjpeg->height == h / 2);
920 is_u16 = (s->bpp > 8);
921 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
923 if (is_single_comp && !is_u16) {
924 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
925 av_frame_unref(s->jpgframe);
926 return AVERROR_PATCHWELCOME;
929 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
930 dst_data = frame->data[0] + dst_offset * pixel_size;
931 src_data = s->jpgframe->data[0];
935 frame->linesize[0] / pixel_size,
937 s->jpgframe->linesize[0] / pixel_size,
943 av_frame_unref(s->jpgframe);
948 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame, AVPacket *avpkt)
950 TiffContext *s = avctx->priv_data;
952 int tile_offset_offset, tile_offset;
953 int tile_byte_count_offset, tile_byte_count;
954 int tile_count_x, tile_count_y;
955 int tile_width, tile_length;
956 int has_width_leftover, has_height_leftover;
957 int tile_x = 0, tile_y = 0;
958 int pos_x = 0, pos_y = 0;
961 s->jpgframe->width = s->tile_width;
962 s->jpgframe->height = s->tile_length;
964 s->avctx_mjpeg->width = s->tile_width;
965 s->avctx_mjpeg->height = s->tile_length;
967 has_width_leftover = (s->width % s->tile_width != 0);
968 has_height_leftover = (s->height % s->tile_length != 0);
970 /* Calculate tile counts (round up) */
971 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
972 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
974 /* Iterate over the number of tiles */
975 for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) {
976 tile_x = tile_idx % tile_count_x;
977 tile_y = tile_idx / tile_count_x;
979 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
980 tile_width = s->width % s->tile_width;
982 tile_width = s->tile_width;
984 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
985 tile_length = s->height % s->tile_length;
987 tile_length = s->tile_length;
989 /* Read tile offset */
990 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
991 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
992 tile_offset = ff_tget_long(&s->gb, s->le);
994 /* Read tile byte size */
995 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
996 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
997 tile_byte_count = ff_tget_long(&s->gb, s->le);
999 /* Seek to tile data */
1000 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
1002 /* Decode JPEG tile and copy it in the reference frame */
1003 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1008 /* Advance current positions */
1009 pos_x += tile_width;
1010 if (tile_x == tile_count_x - 1) { // If on the right edge
1012 pos_y += tile_length;
1016 /* Frame is ready to be output */
1017 frame->pict_type = AV_PICTURE_TYPE_I;
1018 frame->key_frame = 1;
1023 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame)
1025 TiffContext *s = avctx->priv_data;
1027 s->jpgframe->width = s->width;
1028 s->jpgframe->height = s->height;
1030 s->avctx_mjpeg->width = s->width;
1031 s->avctx_mjpeg->height = s->height;
1033 return dng_decode_jpeg(avctx, frame, s->stripsize, 0, 0, s->width, s->height);
1036 static int init_image(TiffContext *s, ThreadFrame *frame)
1039 int create_gray_palette = 0;
1041 // make sure there is no aliasing in the following switch
1042 if (s->bpp >= 100 || s->bppcount >= 10) {
1043 av_log(s->avctx, AV_LOG_ERROR,
1044 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1045 s->bpp, s->bppcount);
1046 return AVERROR_INVALIDDATA;
1049 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1051 if (!s->palette_is_set) {
1052 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1057 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1058 if (!s->palette_is_set) {
1059 create_gray_palette = 1;
1063 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1066 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1069 switch (AV_RL32(s->pattern)) {
1071 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1074 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1077 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1080 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1083 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1084 AV_RL32(s->pattern));
1085 return AVERROR_PATCHWELCOME;
1091 switch (AV_RL32(s->pattern)) {
1093 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_RGGB16LE : AV_PIX_FMT_BAYER_RGGB16BE;
1096 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_BGGR16LE : AV_PIX_FMT_BAYER_BGGR16BE;
1099 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_GBRG16LE : AV_PIX_FMT_BAYER_GBRG16BE;
1102 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_GRBG16LE : AV_PIX_FMT_BAYER_GRBG16BE;
1105 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1106 AV_RL32(s->pattern));
1107 return AVERROR_PATCHWELCOME;
1109 /* Force endianness as mentioned in 'DNG Specification: Chapter 3: BitsPerSample'
1110 NOTE: The spec actually specifies big-endian, not sure why we need little-endian, but
1111 such images don't work otherwise. Examples are images produced by Zenmuse X7. */
1112 if ((s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG)
1113 && (s->bpp != 8 && s->bpp != 16 && s->bpp != 32)) {
1114 switch (s->avctx->pix_fmt) {
1115 case AV_PIX_FMT_BAYER_RGGB16BE: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16LE; break;
1116 case AV_PIX_FMT_BAYER_BGGR16BE: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16LE; break;
1117 case AV_PIX_FMT_BAYER_GBRG16BE: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16LE; break;
1118 case AV_PIX_FMT_BAYER_GRBG16BE: s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16LE; break;
1123 switch (AV_RL32(s->pattern)) {
1125 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_RGGB16LE : AV_PIX_FMT_BAYER_RGGB16BE;
1128 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_BGGR16LE : AV_PIX_FMT_BAYER_BGGR16BE;
1131 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_GBRG16LE : AV_PIX_FMT_BAYER_GBRG16BE;
1134 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_BAYER_GRBG16LE : AV_PIX_FMT_BAYER_GRBG16BE;
1137 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1138 AV_RL32(s->pattern));
1139 return AVERROR_PATCHWELCOME;
1143 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1144 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1145 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1146 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1147 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1148 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1149 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1150 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1151 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1152 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1153 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1154 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1155 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1157 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1158 return AVERROR_PATCHWELCOME;
1161 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1164 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1167 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1170 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1173 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1176 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1177 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1179 av_log(s->avctx, AV_LOG_ERROR,
1180 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1181 return AVERROR_PATCHWELCOME;
1185 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1188 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1191 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1194 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1197 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1200 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1203 av_log(s->avctx, AV_LOG_ERROR,
1204 "This format is not supported (bpp=%d, bppcount=%d)\n",
1205 s->bpp, s->bppcount);
1206 return AVERROR_INVALIDDATA;
1209 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1210 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1211 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1212 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1213 desc->nb_components < 3) {
1214 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1215 return AVERROR_INVALIDDATA;
1219 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1220 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1224 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1226 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1227 if (!create_gray_palette)
1228 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
1230 /* make default grayscale pal */
1232 uint32_t *pal = (uint32_t *)frame->f->data[1];
1233 for (i = 0; i < 1<<s->bpp; i++)
1234 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1240 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1242 int offset = tag == TIFF_YRES ? 2 : 0;
1243 s->res[offset++] = num;
1244 s->res[offset] = den;
1245 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1246 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1247 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1248 if (num > INT64_MAX || den > INT64_MAX) {
1252 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1253 num, den, INT32_MAX);
1254 if (!s->avctx->sample_aspect_ratio.den)
1255 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1259 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1261 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1267 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1272 off = bytestream2_tell(&s->gb);
1278 value = ff_tget(&s->gb, type, s->le);
1281 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1282 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1295 s->is_thumbnail = (value != 0);
1305 av_log(s->avctx, AV_LOG_ERROR,
1306 "This format is not supported (bpp=%d, %d components)\n",
1308 return AVERROR_INVALIDDATA;
1310 s->bppcount = count;
1319 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1320 return AVERROR_INVALIDDATA;
1321 for (i = 0; i < count; i++)
1322 s->bpp += ff_tget(&s->gb, type, s->le);
1329 case TIFF_SAMPLES_PER_PIXEL:
1331 av_log(s->avctx, AV_LOG_ERROR,
1332 "Samples per pixel requires a single value, many provided\n");
1333 return AVERROR_INVALIDDATA;
1336 av_log(s->avctx, AV_LOG_ERROR,
1337 "Samples per pixel %d is too large\n", value);
1338 return AVERROR_INVALIDDATA;
1340 if (s->bppcount == 1)
1342 s->bppcount = value;
1346 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1352 case TIFF_CCITT_RLE:
1359 case TIFF_ADOBE_DEFLATE:
1363 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1364 return AVERROR(ENOSYS);
1374 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1375 return AVERROR(ENOSYS);
1378 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1380 return AVERROR_INVALIDDATA;
1383 case TIFF_ROWSPERSTRIP:
1384 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1386 s->rps = FFMIN(value, s->height);
1388 case TIFF_STRIP_OFFS:
1390 if (value > INT_MAX) {
1391 av_log(s->avctx, AV_LOG_ERROR,
1392 "strippos %u too large\n", value);
1393 return AVERROR_INVALIDDATA;
1396 s->stripoff = value;
1404 case TIFF_STRIP_SIZE:
1406 if (value > INT_MAX) {
1407 av_log(s->avctx, AV_LOG_ERROR,
1408 "stripsize %u too large\n", value);
1409 return AVERROR_INVALIDDATA;
1411 s->stripsizesoff = 0;
1412 s->stripsize = value;
1415 s->stripsizesoff = off;
1422 set_sar(s, tag, value, value2);
1424 case TIFF_TILE_OFFSETS:
1425 s->tile_offsets_offset = off;
1426 s->tile_count = count;
1429 case TIFF_TILE_BYTE_COUNTS:
1430 s->tile_byte_counts_offset = off;
1432 case TIFF_TILE_LENGTH:
1433 s->tile_length = value;
1435 case TIFF_TILE_WIDTH:
1436 s->tile_width = value;
1438 case TIFF_PREDICTOR:
1439 s->predictor = value;
1445 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1447 case DNG_LINEARIZATION_TABLE: {
1448 uint32_t lut_offset = value;
1449 uint32_t lut_size = count;
1450 uint32_t lut_wanted_size = 1 << s->bpp;
1451 if (lut_wanted_size != lut_size)
1452 av_log(s->avctx, AV_LOG_WARNING, "DNG contains LUT with invalid size (%"PRIu32"), disabling LUT\n", lut_size);
1453 else if (lut_offset >= bytestream2_size(&s->gb))
1454 av_log(s->avctx, AV_LOG_WARNING, "DNG contains LUT with invalid offset (%"PRIu32"), disabling LUT\n", lut_offset);
1456 s->dng_lut = (uint16_t*)(s->gb.buffer + lut_offset);
1459 case DNG_BLACK_LEVEL:
1460 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1461 if (type == TIFF_RATIONAL) {
1462 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1463 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1465 s->black_level = value / value2;
1467 s->black_level = ff_tget(&s->gb, type, s->le);
1468 av_log(s->avctx, AV_LOG_WARNING, "Assuming black level pattern values are identical\n");
1470 s->black_level = value / value2;
1473 case DNG_WHITE_LEVEL:
1474 s->white_level = value;
1476 case TIFF_CFA_PATTERN_DIM:
1477 if (count != 2 || (ff_tget(&s->gb, type, s->le) != 2 &&
1478 ff_tget(&s->gb, type, s->le) != 2)) {
1479 av_log(s->avctx, AV_LOG_ERROR, "CFA Pattern dimensions are not 2x2\n");
1480 return AVERROR_INVALIDDATA;
1483 case TIFF_CFA_PATTERN:
1485 s->pattern[0] = ff_tget(&s->gb, type, s->le);
1486 s->pattern[1] = ff_tget(&s->gb, type, s->le);
1487 s->pattern[2] = ff_tget(&s->gb, type, s->le);
1488 s->pattern[3] = ff_tget(&s->gb, type, s->le);
1490 case TIFF_PHOTOMETRIC:
1492 case TIFF_PHOTOMETRIC_WHITE_IS_ZERO:
1493 case TIFF_PHOTOMETRIC_BLACK_IS_ZERO:
1494 case TIFF_PHOTOMETRIC_RGB:
1495 case TIFF_PHOTOMETRIC_PALETTE:
1496 case TIFF_PHOTOMETRIC_SEPARATED:
1497 case TIFF_PHOTOMETRIC_YCBCR:
1498 case TIFF_PHOTOMETRIC_CFA:
1499 case TIFF_PHOTOMETRIC_LINEAR_RAW: // Used by DNG images
1500 s->photometric = value;
1502 case TIFF_PHOTOMETRIC_ALPHA_MASK:
1503 case TIFF_PHOTOMETRIC_CIE_LAB:
1504 case TIFF_PHOTOMETRIC_ICC_LAB:
1505 case TIFF_PHOTOMETRIC_ITU_LAB:
1506 case TIFF_PHOTOMETRIC_LOG_L:
1507 case TIFF_PHOTOMETRIC_LOG_LUV:
1508 avpriv_report_missing_feature(s->avctx,
1509 "PhotometricInterpretation 0x%04X",
1511 return AVERROR_PATCHWELCOME;
1513 av_log(s->avctx, AV_LOG_ERROR, "PhotometricInterpretation %u is "
1514 "unknown\n", value);
1515 return AVERROR_INVALIDDATA;
1518 case TIFF_FILL_ORDER:
1519 if (value < 1 || value > 2) {
1520 av_log(s->avctx, AV_LOG_ERROR,
1521 "Unknown FillOrder value %d, trying default one\n", value);
1524 s->fill_order = value - 1;
1527 GetByteContext pal_gb[3];
1528 off = type_sizes[type];
1529 if (count / 3 > 256 ||
1530 bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
1531 return AVERROR_INVALIDDATA;
1533 pal_gb[0] = pal_gb[1] = pal_gb[2] = s->gb;
1534 bytestream2_skip(&pal_gb[1], count / 3 * off);
1535 bytestream2_skip(&pal_gb[2], count / 3 * off * 2);
1537 off = (type_sizes[type] - 1) << 3;
1539 av_log(s->avctx, AV_LOG_ERROR, "palette shift %d is out of range\n", off);
1540 return AVERROR_INVALIDDATA;
1543 for (i = 0; i < count / 3; i++) {
1544 uint32_t p = 0xFF000000;
1545 p |= (ff_tget(&pal_gb[0], type, s->le) >> off) << 16;
1546 p |= (ff_tget(&pal_gb[1], type, s->le) >> off) << 8;
1547 p |= ff_tget(&pal_gb[2], type, s->le) >> off;
1550 s->palette_is_set = 1;
1554 s->planar = value == 2;
1556 case TIFF_YCBCR_SUBSAMPLING:
1558 av_log(s->avctx, AV_LOG_ERROR, "subsample count invalid\n");
1559 return AVERROR_INVALIDDATA;
1561 for (i = 0; i < count; i++) {
1562 s->subsampling[i] = ff_tget(&s->gb, type, s->le);
1563 if (s->subsampling[i] <= 0) {
1564 av_log(s->avctx, AV_LOG_ERROR, "subsampling %d is invalid\n", s->subsampling[i]);
1565 s->subsampling[i] = 1;
1566 return AVERROR_INVALIDDATA;
1570 case TIFF_T4OPTIONS:
1571 if (s->compr == TIFF_G3)
1572 s->fax_opts = value;
1574 case TIFF_T6OPTIONS:
1575 if (s->compr == TIFF_G4)
1576 s->fax_opts = value;
1578 #define ADD_METADATA(count, name, sep)\
1579 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
1580 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
1583 case TIFF_MODEL_PIXEL_SCALE:
1584 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
1586 case TIFF_MODEL_TRANSFORMATION:
1587 ADD_METADATA(count, "ModelTransformationTag", NULL);
1589 case TIFF_MODEL_TIEPOINT:
1590 ADD_METADATA(count, "ModelTiepointTag", NULL);
1592 case TIFF_GEO_KEY_DIRECTORY:
1593 if (s->geotag_count) {
1594 avpriv_request_sample(s->avctx, "Multiple geo key directories\n");
1595 return AVERROR_INVALIDDATA;
1597 ADD_METADATA(1, "GeoTIFF_Version", NULL);
1598 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
1599 s->geotag_count = ff_tget_short(&s->gb, s->le);
1600 if (s->geotag_count > count / 4 - 1) {
1601 s->geotag_count = count / 4 - 1;
1602 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
1604 if ( bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4
1605 || s->geotag_count == 0) {
1606 s->geotag_count = 0;
1609 s->geotags = av_mallocz_array(s->geotag_count, sizeof(TiffGeoTag));
1611 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1612 s->geotag_count = 0;
1615 for (i = 0; i < s->geotag_count; i++) {
1616 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
1617 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
1618 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
1620 if (!s->geotags[i].type)
1621 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
1623 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
1626 case TIFF_GEO_DOUBLE_PARAMS:
1627 if (count >= INT_MAX / sizeof(int64_t))
1628 return AVERROR_INVALIDDATA;
1629 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
1630 return AVERROR_INVALIDDATA;
1631 dp = av_malloc_array(count, sizeof(double));
1633 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1636 for (i = 0; i < count; i++)
1637 dp[i] = ff_tget_double(&s->gb, s->le);
1638 for (i = 0; i < s->geotag_count; i++) {
1639 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
1640 if (s->geotags[i].count == 0
1641 || s->geotags[i].offset + s->geotags[i].count > count) {
1642 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1643 } else if (s->geotags[i].val) {
1644 av_log(s->avctx, AV_LOG_WARNING, "Duplicate GeoTIFF key %d\n", s->geotags[i].key);
1646 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
1648 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1650 return AVERROR(ENOMEM);
1652 s->geotags[i].val = ap;
1658 case TIFF_GEO_ASCII_PARAMS:
1659 pos = bytestream2_tell(&s->gb);
1660 for (i = 0; i < s->geotag_count; i++) {
1661 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
1662 if (s->geotags[i].count == 0
1663 || s->geotags[i].offset + s->geotags[i].count > count) {
1664 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
1668 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
1669 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
1670 return AVERROR_INVALIDDATA;
1671 if (s->geotags[i].val)
1672 return AVERROR_INVALIDDATA;
1673 ap = av_malloc(s->geotags[i].count);
1675 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
1676 return AVERROR(ENOMEM);
1678 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
1679 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
1680 s->geotags[i].val = ap;
1686 ADD_METADATA(count, "artist", NULL);
1688 case TIFF_COPYRIGHT:
1689 ADD_METADATA(count, "copyright", NULL);
1692 ADD_METADATA(count, "date", NULL);
1694 case TIFF_DOCUMENT_NAME:
1695 ADD_METADATA(count, "document_name", NULL);
1697 case TIFF_HOST_COMPUTER:
1698 ADD_METADATA(count, "computer", NULL);
1700 case TIFF_IMAGE_DESCRIPTION:
1701 ADD_METADATA(count, "description", NULL);
1704 ADD_METADATA(count, "make", NULL);
1707 ADD_METADATA(count, "model", NULL);
1709 case TIFF_PAGE_NAME:
1710 ADD_METADATA(count, "page_name", NULL);
1712 case TIFF_PAGE_NUMBER:
1713 ADD_METADATA(count, "page_number", " / ");
1714 // need to seek back to re-read the page number
1715 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1716 // read the page number
1717 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1718 // get back to where we were before the previous seek
1719 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1721 case TIFF_SOFTWARE_NAME:
1722 ADD_METADATA(count, "software", NULL);
1726 unsigned int ver[4];
1727 ver[0] = ff_tget(&s->gb, type, s->le);
1728 ver[1] = ff_tget(&s->gb, type, s->le);
1729 ver[2] = ff_tget(&s->gb, type, s->le);
1730 ver[3] = ff_tget(&s->gb, type, s->le);
1732 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1733 ver[0], ver[1], ver[2], ver[3]);
1735 tiff_set_type(s, TIFF_TYPE_DNG);
1738 case CINEMADNG_TIME_CODES:
1739 case CINEMADNG_FRAME_RATE:
1740 case CINEMADNG_T_STOP:
1741 case CINEMADNG_REEL_NAME:
1742 case CINEMADNG_CAMERA_LABEL:
1743 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1746 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1747 av_log(s->avctx, AV_LOG_ERROR,
1748 "Unknown or unsupported tag %d/0x%0X\n",
1750 return AVERROR_INVALIDDATA;
1755 av_log(s->avctx, AV_LOG_ERROR,
1756 "This format is not supported (bpp=%d, %d components)\n",
1759 return AVERROR_INVALIDDATA;
1761 bytestream2_seek(&s->gb, start, SEEK_SET);
1765 static int decode_frame(AVCodecContext *avctx,
1766 void *data, int *got_frame, AVPacket *avpkt)
1768 TiffContext *const s = avctx->priv_data;
1769 AVFrame *const p = data;
1770 ThreadFrame frame = { .f = data };
1771 unsigned off, last_off;
1772 int le, ret, plane, planes;
1773 int i, j, entries, stride;
1774 unsigned soff, ssize;
1776 GetByteContext stripsizes;
1777 GetByteContext stripdata;
1778 int retry_for_subifd, retry_for_page;
1781 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1783 // parse image header
1784 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1785 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1787 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1788 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1789 return AVERROR_INVALIDDATA;
1792 // TIFF_BPP is not a required tag and defaults to 1
1794 s->tiff_type = TIFF_TYPE_TIFF;
1796 s->is_thumbnail = 0;
1797 s->bppcount = s->bpp = 1;
1798 s->photometric = TIFF_PHOTOMETRIC_NONE;
1799 s->compr = TIFF_RAW;
1809 // Reset these offsets so we can tell if they were set this frame
1810 s->stripsizesoff = s->strippos = 0;
1811 /* parse image file directory */
1812 bytestream2_seek(&s->gb, off, SEEK_SET);
1813 entries = ff_tget_short(&s->gb, le);
1814 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1815 return AVERROR_INVALIDDATA;
1816 for (i = 0; i < entries; i++) {
1817 if ((ret = tiff_decode_tag(s, p)) < 0)
1821 if (s->get_thumbnail && !s->is_thumbnail) {
1822 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1826 /** whether we should process this IFD's SubIFD */
1827 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1828 /** whether we should process this multi-page IFD's next page */
1829 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1832 if (retry_for_page) {
1833 // set offset to the next IFD
1834 off = ff_tget_long(&s->gb, le);
1835 } else if (retry_for_subifd) {
1836 // set offset to the SubIFD
1840 if (retry_for_subifd || retry_for_page) {
1842 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1843 return AVERROR_INVALIDDATA;
1845 if (off <= last_off) {
1846 avpriv_request_sample(s->avctx, "non increasing IFD offset\n");
1847 return AVERROR_INVALIDDATA;
1849 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1850 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1851 return AVERROR_INVALIDDATA;
1857 /* At this point we've decided on which (Sub)IFD to process */
1859 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1861 for (i = 0; i<s->geotag_count; i++) {
1862 const char *keyname = get_geokey_name(s->geotags[i].key);
1864 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1867 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1868 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1871 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1873 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1879 if (s->white_level == 0)
1880 s->white_level = (1 << s->bpp) - 1; /* Default value as per the spec */
1882 if (s->white_level <= s->black_level) {
1883 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1884 s->black_level, s->white_level);
1885 return AVERROR_INVALIDDATA;
1889 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1890 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1891 return AVERROR_INVALIDDATA;
1894 /* now we have the data and may start decoding */
1895 if ((ret = init_image(s, &frame)) < 0)
1899 if (s->strips == 1 && !s->stripsize) {
1900 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1901 s->stripsize = avpkt->size - s->stripoff;
1904 if (s->stripsizesoff) {
1905 if (s->stripsizesoff >= (unsigned)avpkt->size)
1906 return AVERROR_INVALIDDATA;
1907 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1908 avpkt->size - s->stripsizesoff);
1911 if (s->strippos >= (unsigned)avpkt->size)
1912 return AVERROR_INVALIDDATA;
1913 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1914 avpkt->size - s->strippos);
1917 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1918 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1919 return AVERROR_INVALIDDATA;
1923 /* Handle DNG images with JPEG-compressed tiles */
1925 if (is_dng && s->is_tiled) {
1927 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1928 return AVERROR_PATCHWELCOME;
1929 } else if (!s->is_bayer) {
1930 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1931 return AVERROR_PATCHWELCOME;
1933 if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0)
1939 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1941 planes = s->planar ? s->bppcount : 1;
1942 for (plane = 0; plane < planes; plane++) {
1943 uint8_t *five_planes = NULL;
1944 int remaining = avpkt->size;
1946 stride = p->linesize[plane];
1947 dst = p->data[plane];
1948 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1949 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1950 stride = stride * 5 / 4;
1952 dst = av_malloc(stride * s->height);
1954 return AVERROR(ENOMEM);
1956 for (i = 0; i < s->height; i += s->rps) {
1958 dst += s->rps * stride;
1959 if (s->stripsizesoff)
1960 ssize = ff_tget(&stripsizes, s->sstype, le);
1962 ssize = s->stripsize;
1965 soff = ff_tget(&stripdata, s->sot, le);
1969 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
1970 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1971 av_freep(&five_planes);
1972 return AVERROR_INVALIDDATA;
1975 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
1976 FFMIN(s->rps, s->height - i))) < 0) {
1977 if (avctx->err_recognition & AV_EF_EXPLODE) {
1978 av_freep(&five_planes);
1984 decoded_height = FFMIN(i, s->height);
1986 if (s->predictor == 2) {
1987 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1988 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
1989 return AVERROR_PATCHWELCOME;
1991 dst = five_planes ? five_planes : p->data[plane];
1994 soff = FFMAX(soff / s->bppcount, 1);
1995 ssize = s->width * soff;
1996 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
1997 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
1998 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
1999 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2000 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2001 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2002 for (i = 0; i < decoded_height; i++) {
2003 for (j = soff; j < ssize; j += 2)
2004 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2007 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2008 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2009 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2010 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2011 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2012 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2013 for (i = 0; i < decoded_height; i++) {
2014 for (j = soff; j < ssize; j += 2)
2015 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2019 for (i = 0; i < decoded_height; i++) {
2020 for (j = soff; j < ssize; j++)
2021 dst[j] += dst[j - soff];
2027 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2028 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2029 dst = p->data[plane];
2030 for (i = 0; i < s->height; i++) {
2031 for (j = 0; j < stride; j++)
2032 dst[j] = c - dst[j];
2037 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2038 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2039 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2040 uint8_t *src = five_planes ? five_planes : p->data[plane];
2041 dst = p->data[plane];
2042 for (i = 0; i < s->height; i++) {
2043 for (j = 0; j < s->width; j++) {
2044 int k = 255 - src[x * j + 3];
2045 int r = (255 - src[x * j ]) * k;
2046 int g = (255 - src[x * j + 1]) * k;
2047 int b = (255 - src[x * j + 2]) * k;
2048 dst[4 * j ] = r * 257 >> 16;
2049 dst[4 * j + 1] = g * 257 >> 16;
2050 dst[4 * j + 2] = b * 257 >> 16;
2051 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2054 dst += p->linesize[plane];
2056 av_freep(&five_planes);
2057 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2058 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2059 dst = p->data[plane];
2060 for (i = 0; i < s->height; i++) {
2061 for (j = 0; j < s->width; j++) {
2062 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2063 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2064 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2065 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2066 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2067 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2068 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2069 AV_WB16(dst + 8 * j + 6, 65535);
2071 dst += p->linesize[plane];
2076 if (s->planar && s->bppcount > 2) {
2077 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2078 FFSWAP(int, p->linesize[0], p->linesize[2]);
2079 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2080 FFSWAP(int, p->linesize[0], p->linesize[1]);
2083 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2084 uint16_t *dst = (uint16_t *)p->data[0];
2085 for (i = 0; i < s->height; i++) {
2086 for (j = 0; j < s->width; j++)
2087 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2097 static av_cold int tiff_init(AVCodecContext *avctx)
2099 TiffContext *s = avctx->priv_data;
2100 const AVCodec *codec;
2106 s->subsampling[1] = 1;
2108 ff_lzw_decode_open(&s->lzw);
2110 return AVERROR(ENOMEM);
2111 ff_ccitt_unpack_init();
2113 /* Allocate JPEG frame */
2114 s->jpgframe = av_frame_alloc();
2116 return AVERROR(ENOMEM);
2118 /* Prepare everything needed for JPEG decoding */
2119 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2122 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2123 if (!s->avctx_mjpeg)
2124 return AVERROR(ENOMEM);
2125 s->avctx_mjpeg->flags = avctx->flags;
2126 s->avctx_mjpeg->flags2 = avctx->flags2;
2127 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2128 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2129 ret = ff_codec_open2_recursive(s->avctx_mjpeg, codec, NULL);
2131 av_frame_free(&s->jpgframe);
2132 avcodec_free_context(&s->avctx_mjpeg);
2139 static av_cold int tiff_end(AVCodecContext *avctx)
2141 TiffContext *const s = avctx->priv_data;
2145 ff_lzw_decode_close(&s->lzw);
2146 av_freep(&s->deinvert_buf);
2147 s->deinvert_buf_size = 0;
2148 av_freep(&s->yuv_line);
2149 s->yuv_line_size = 0;
2150 av_freep(&s->fax_buffer);
2151 s->fax_buffer_size = 0;
2152 av_frame_free(&s->jpgframe);
2153 avcodec_free_context(&s->avctx_mjpeg);
2157 #define OFFSET(x) offsetof(TiffContext, x)
2158 static const AVOption tiff_options[] = {
2159 { "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 },
2160 { "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 },
2161 { "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 },
2165 static const AVClass tiff_decoder_class = {
2166 .class_name = "TIFF decoder",
2167 .item_name = av_default_item_name,
2168 .option = tiff_options,
2169 .version = LIBAVUTIL_VERSION_INT,
2172 AVCodec ff_tiff_decoder = {
2174 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2175 .type = AVMEDIA_TYPE_VIDEO,
2176 .id = AV_CODEC_ID_TIFF,
2177 .priv_data_size = sizeof(TiffContext),
2180 .decode = decode_frame,
2181 .init_thread_copy = ONLY_IF_THREADS_ENABLED(tiff_init),
2182 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2183 .priv_class = &tiff_decoder_class,