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;
88 uint16_t dng_lut[65536];
93 int strips, rps, sstype;
95 int stripsizesoff, stripsize, stripoff, strippos;
100 int tile_byte_counts_offset, tile_offsets_offset;
101 int tile_width, tile_length;
106 uint8_t *deinvert_buf;
107 int deinvert_buf_size;
109 unsigned int yuv_line_size;
111 unsigned int fax_buffer_size;
117 static void tiff_set_type(TiffContext *s, enum TiffType tiff_type) {
118 if (s->tiff_type < tiff_type) // Prioritize higher-valued entries
119 s->tiff_type = tiff_type;
122 static void free_geotags(TiffContext *const s)
125 for (i = 0; i < s->geotag_count; i++) {
126 if (s->geotags[i].val)
127 av_freep(&s->geotags[i].val);
129 av_freep(&s->geotags);
133 #define RET_GEOKEY(TYPE, array, element)\
134 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
135 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_name_type_map))\
136 return tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
138 static const char *get_geokey_name(int key)
140 RET_GEOKEY(VERT, vert, name);
141 RET_GEOKEY(PROJ, proj, name);
142 RET_GEOKEY(GEOG, geog, name);
143 RET_GEOKEY(CONF, conf, name);
148 static int get_geokey_type(int key)
150 RET_GEOKEY(VERT, vert, type);
151 RET_GEOKEY(PROJ, proj, type);
152 RET_GEOKEY(GEOG, geog, type);
153 RET_GEOKEY(CONF, conf, type);
155 return AVERROR_INVALIDDATA;
158 static int cmp_id_key(const void *id, const void *k)
160 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
163 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
165 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
172 static char *get_geokey_val(int key, int val)
176 if (val == TIFF_GEO_KEY_UNDEFINED)
177 return av_strdup("undefined");
178 if (val == TIFF_GEO_KEY_USER_DEFINED)
179 return av_strdup("User-Defined");
181 #define RET_GEOKEY_VAL(TYPE, array)\
182 if (val >= TIFF_##TYPE##_OFFSET &&\
183 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(tiff_##array##_codes))\
184 return av_strdup(tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
187 case TIFF_GT_MODEL_TYPE_GEOKEY:
188 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
190 case TIFF_GT_RASTER_TYPE_GEOKEY:
191 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
193 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
194 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
195 case TIFF_VERTICAL_UNITS_GEOKEY:
196 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
198 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
199 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
200 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
202 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
203 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
204 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
206 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
207 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
208 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
210 case TIFF_GEOG_ELLIPSOID_GEOKEY:
211 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
213 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
214 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
216 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
217 ap = av_strdup(search_keyval(tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(tiff_proj_cs_type_codes), val));
220 case TIFF_PROJECTION_GEOKEY:
221 ap = av_strdup(search_keyval(tiff_projection_codes, FF_ARRAY_ELEMS(tiff_projection_codes), val));
224 case TIFF_PROJ_COORD_TRANS_GEOKEY:
225 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
227 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
228 RET_GEOKEY_VAL(VERT_CS, vert_cs);
229 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
236 snprintf(ap, 14, "Unknown-%d", val);
240 static char *doubles2str(double *dp, int count, const char *sep)
244 uint64_t component_len;
245 if (!sep) sep = ", ";
246 component_len = 24LL + strlen(sep);
247 if (count >= (INT_MAX - 1)/component_len)
249 ap = av_malloc(component_len * count + 1);
254 for (i = 0; i < count; i++) {
255 unsigned l = snprintf(ap, component_len, "%.15g%s", dp[i], sep);
256 if(l >= component_len) {
262 ap0[strlen(ap0) - strlen(sep)] = '\0';
266 static int add_metadata(int count, int type,
267 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
270 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, &frame->metadata);
271 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, 0, &frame->metadata);
272 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, &frame->metadata);
273 default : return AVERROR_INVALIDDATA;
277 static void av_always_inline dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
278 const uint8_t *src, int src_stride, int width, int height,
279 int is_single_comp, int is_u16);
281 static void av_always_inline horizontal_fill(TiffContext *s,
282 unsigned int bpp, uint8_t* dst,
283 int usePtr, const uint8_t *src,
284 uint8_t c, int width, int offset)
288 while (--width >= 0) {
289 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
290 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
291 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
292 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
293 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
294 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
295 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
296 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
300 while (--width >= 0) {
301 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
302 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
303 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
304 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
308 while (--width >= 0) {
309 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
310 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
316 uint16_t *dst16 = (uint16_t *)dst;
317 int is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
318 uint8_t shift = is_dng ? 0 : 16 - bpp;
321 init_get_bits8(&gb, src, width);
322 for (int i = 0; i < s->width; i++) {
323 dst16[i] = get_bits(&gb, bpp) << shift;
329 memcpy(dst + offset, src, width);
331 memset(dst + offset, c, width);
336 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
340 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
341 if (!s->deinvert_buf)
342 return AVERROR(ENOMEM);
343 for (i = 0; i < size; i++)
344 s->deinvert_buf[i] = ff_reverse[src[i]];
349 static void unpack_gray(TiffContext *s, AVFrame *p,
350 const uint8_t *src, int lnum, int width, int bpp)
353 uint16_t *dst = (uint16_t *)(p->data[0] + lnum * p->linesize[0]);
355 init_get_bits8(&gb, src, width);
357 for (int i = 0; i < s->width; i++) {
358 dst[i] = get_bits(&gb, bpp);
362 static void unpack_yuv(TiffContext *s, AVFrame *p,
363 const uint8_t *src, int lnum)
366 int w = (s->width - 1) / s->subsampling[0] + 1;
367 uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
368 uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
369 if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
370 for (i = 0; i < w; i++) {
371 for (j = 0; j < s->subsampling[1]; j++)
372 for (k = 0; k < s->subsampling[0]; k++)
373 p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
374 FFMIN(i * s->subsampling[0] + k, s->width-1)] = *src++;
379 for (i = 0; i < w; i++) {
380 for (j = 0; j < s->subsampling[1]; j++)
381 for (k = 0; k < s->subsampling[0]; k++)
382 p->data[0][(lnum + j) * p->linesize[0] +
383 i * s->subsampling[0] + k] = *src++;
391 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
394 z_stream zstream = { 0 };
397 zstream.next_in = src;
398 zstream.avail_in = size;
399 zstream.next_out = dst;
400 zstream.avail_out = *len;
401 zret = inflateInit(&zstream);
403 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
406 zret = inflate(&zstream, Z_SYNC_FLUSH);
407 inflateEnd(&zstream);
408 *len = zstream.total_out;
409 return zret == Z_STREAM_END ? Z_OK : zret;
412 static int tiff_unpack_zlib(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
413 const uint8_t *src, int size, int width, int lines,
414 int strip_start, int is_yuv)
417 unsigned long outlen;
419 outlen = width * lines;
420 zbuf = av_malloc(outlen);
422 return AVERROR(ENOMEM);
424 if ((ret = deinvert_buffer(s, src, size)) < 0) {
428 src = s->deinvert_buf;
430 ret = tiff_uncompress(zbuf, &outlen, src, size);
432 av_log(s->avctx, AV_LOG_ERROR,
433 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
434 (unsigned long)width * lines, ret);
436 return AVERROR_UNKNOWN;
439 for (line = 0; line < lines; line++) {
440 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
441 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
443 memcpy(dst, src, width);
446 unpack_yuv(s, p, dst, strip_start + line);
447 line += s->subsampling[1] - 1;
458 static int tiff_uncompress_lzma(uint8_t *dst, uint64_t *len, const uint8_t *src,
461 lzma_stream stream = LZMA_STREAM_INIT;
464 stream.next_in = (uint8_t *)src;
465 stream.avail_in = size;
466 stream.next_out = dst;
467 stream.avail_out = *len;
468 ret = lzma_stream_decoder(&stream, UINT64_MAX, 0);
469 if (ret != LZMA_OK) {
470 av_log(NULL, AV_LOG_ERROR, "LZMA init error: %d\n", ret);
473 ret = lzma_code(&stream, LZMA_RUN);
475 *len = stream.total_out;
476 return ret == LZMA_STREAM_END ? LZMA_OK : ret;
479 static int tiff_unpack_lzma(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
480 const uint8_t *src, int size, int width, int lines,
481 int strip_start, int is_yuv)
483 uint64_t outlen = width * (uint64_t)lines;
485 uint8_t *buf = av_malloc(outlen);
487 return AVERROR(ENOMEM);
489 if ((ret = deinvert_buffer(s, src, size)) < 0) {
493 src = s->deinvert_buf;
495 ret = tiff_uncompress_lzma(buf, &outlen, src, size);
496 if (ret != LZMA_OK) {
497 av_log(s->avctx, AV_LOG_ERROR,
498 "Uncompressing failed (%"PRIu64" of %"PRIu64") with error %d\n", outlen,
499 (uint64_t)width * lines, ret);
501 return AVERROR_UNKNOWN;
504 for (line = 0; line < lines; line++) {
505 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
506 horizontal_fill(s, s->bpp, dst, 1, src, 0, width, 0);
508 memcpy(dst, src, width);
511 unpack_yuv(s, p, dst, strip_start + line);
512 line += s->subsampling[1] - 1;
522 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
523 const uint8_t *src, int size, int width, int lines)
529 av_fast_padded_malloc(&s->fax_buffer, &s->fax_buffer_size, size);
530 src2 = s->fax_buffer;
533 av_log(s->avctx, AV_LOG_ERROR,
534 "Error allocating temporary buffer\n");
535 return AVERROR(ENOMEM);
538 if (!s->fill_order) {
539 memcpy(src2, src, size);
541 for (i = 0; i < size; i++)
542 src2[i] = ff_reverse[src[i]];
544 memset(src2 + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
545 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
546 s->compr, s->fax_opts);
547 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
548 for (line = 0; line < lines; line++) {
549 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
555 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame);
557 static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int stride,
558 const uint8_t *src, int size, int strip_start, int lines)
561 int c, line, pixels, code, ret;
562 const uint8_t *ssrc = src;
563 int width = ((s->width * s->bpp) + 7) >> 3;
564 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(p->format);
565 int is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
566 (desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
567 desc->nb_components >= 3;
571 width /= s->bppcount;
574 return AVERROR_INVALIDDATA;
577 int bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
578 s->subsampling[0] * s->subsampling[1] + 7) >> 3;
579 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
580 if (s->yuv_line == NULL) {
581 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
582 return AVERROR(ENOMEM);
587 width = (s->width - 1) / s->subsampling[0] + 1;
588 width = width * s->subsampling[0] * s->subsampling[1] + 2*width;
589 av_assert0(width <= bytes_per_row);
590 av_assert0(s->bpp == 24);
593 av_assert0(width == (s->bpp * s->width + 7) >> 3);
595 if (p->format == AV_PIX_FMT_GRAY12) {
596 av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, width);
597 if (s->yuv_line == NULL) {
598 av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
599 return AVERROR(ENOMEM);
605 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
607 return tiff_unpack_zlib(s, p, dst, stride, src, size, width, lines,
608 strip_start, is_yuv);
610 av_log(s->avctx, AV_LOG_ERROR,
611 "zlib support not enabled, "
612 "deflate compression not supported\n");
613 return AVERROR(ENOSYS);
616 if (s->compr == TIFF_LZMA) {
618 return tiff_unpack_lzma(s, p, dst, stride, src, size, width, lines,
619 strip_start, is_yuv);
621 av_log(s->avctx, AV_LOG_ERROR,
622 "LZMA support not enabled\n");
623 return AVERROR(ENOSYS);
626 if (s->compr == TIFF_LZW) {
628 if ((ret = deinvert_buffer(s, src, size)) < 0)
630 ssrc = src = s->deinvert_buf;
632 if (size > 1 && !src[0] && (src[1]&1)) {
633 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
635 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
636 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
639 for (line = 0; line < lines; line++) {
640 pixels = ff_lzw_decode(s->lzw, dst, width);
641 if (pixels < width) {
642 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
644 return AVERROR_INVALIDDATA;
646 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
647 horizontal_fill(s, s->bpp, dst, 1, dst, 0, width, 0);
649 unpack_yuv(s, p, dst, strip_start + line);
650 line += s->subsampling[1] - 1;
651 } else if (p->format == AV_PIX_FMT_GRAY12) {
652 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
658 if (s->compr == TIFF_CCITT_RLE ||
659 s->compr == TIFF_G3 ||
660 s->compr == TIFF_G4) {
661 if (is_yuv || p->format == AV_PIX_FMT_GRAY12)
662 return AVERROR_INVALIDDATA;
664 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
667 bytestream2_init(&s->gb, src, size);
668 bytestream2_init_writer(&pb, dst, is_yuv ? s->yuv_line_size : (stride * lines));
670 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
672 /* Decode JPEG-encoded DNGs with strips */
673 if (s->compr == TIFF_NEWJPEG && is_dng) {
675 av_log(s->avctx, AV_LOG_ERROR, "More than one DNG JPEG strips unsupported\n");
676 return AVERROR_PATCHWELCOME;
678 if ((ret = dng_decode_strip(s->avctx, p)) < 0)
683 if (is_dng && stride == 0)
684 return AVERROR_INVALIDDATA;
686 for (line = 0; line < lines; line++) {
687 if (src - ssrc > size) {
688 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
689 return AVERROR_INVALIDDATA;
692 if (bytestream2_get_bytes_left(&s->gb) == 0 || bytestream2_get_eof(&pb))
694 bytestream2_seek_p(&pb, stride * line, SEEK_SET);
697 if (ssrc + size - src < width)
698 return AVERROR_INVALIDDATA;
700 if (!s->fill_order) {
701 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 || s->is_bayer),
702 dst, 1, src, 0, width, 0);
705 for (i = 0; i < width; i++)
706 dst[i] = ff_reverse[src[i]];
709 /* Color processing for DNG images with uncompressed strips (non-tiled) */
711 int is_u16, pixel_size_bytes, pixel_size_bits, elements;
713 is_u16 = (s->bpp / s->bppcount > 8);
714 pixel_size_bits = (is_u16 ? 16 : 8);
715 pixel_size_bytes = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
717 elements = width / pixel_size_bytes * pixel_size_bits / s->bpp * s->bppcount; // need to account for [1, 16] bpp
718 av_assert0 (elements * pixel_size_bytes <= FFABS(stride));
721 0, // no stride, only 1 line
723 0, // no stride, only 1 line
726 0, // single-component variation is only preset in JPEG-encoded DNGs
733 for (pixels = 0; pixels < width;) {
734 if (ssrc + size - src < 2) {
735 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
736 return AVERROR_INVALIDDATA;
738 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
741 if (pixels + code > width ||
742 ssrc + size - src < code) {
743 av_log(s->avctx, AV_LOG_ERROR,
744 "Copy went out of bounds\n");
745 return AVERROR_INVALIDDATA;
747 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
748 dst, 1, src, 0, code, pixels);
751 } else if (code != -128) { // -127..-1
753 if (pixels + code > width) {
754 av_log(s->avctx, AV_LOG_ERROR,
755 "Run went out of bounds\n");
756 return AVERROR_INVALIDDATA;
759 horizontal_fill(s, s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
760 dst, 0, NULL, c, code, pixels);
766 for (i = 0; i < width; i++)
767 dst[i] = ff_reverse[dst[i]];
772 unpack_yuv(s, p, dst, strip_start + line);
773 line += s->subsampling[1] - 1;
774 } else if (p->format == AV_PIX_FMT_GRAY12) {
775 unpack_gray(s, p, dst, strip_start + line, width, s->bpp);
783 * Map stored raw sensor values into linear reference values (see: DNG Specification - Chapter 5)
785 static uint16_t av_always_inline dng_process_color16(uint16_t value,
787 uint16_t black_level,
788 float scale_factor) {
791 // Lookup table lookup
795 // Black level subtraction
796 value = av_clip_uint16_c((unsigned)value - black_level);
799 value_norm = (float)value * scale_factor;
801 value = av_clip_uint16_c(value_norm * 65535);
806 static uint16_t av_always_inline dng_process_color8(uint16_t value,
808 uint16_t black_level,
809 float scale_factor) {
810 return dng_process_color16(value, lut, black_level, scale_factor) >> 8;
813 static void dng_blit(TiffContext *s, uint8_t *dst, int dst_stride,
814 const uint8_t *src, int src_stride,
815 int width, int height, int is_single_comp, int is_u16)
820 scale_factor = 1.0f / (s->white_level - s->black_level);
822 if (is_single_comp) {
824 return; /* <= 8bpp unsupported */
826 /* Image is double the width and half the height we need, each row comprises 2 rows of the output
827 (split vertically in the middle). */
828 for (line = 0; line < height / 2; line++) {
829 uint16_t *dst_u16 = (uint16_t *)dst;
830 uint16_t *src_u16 = (uint16_t *)src;
832 /* Blit first half of input row row to initial row of output */
833 for (col = 0; col < width; col++)
834 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
836 /* Advance the destination pointer by a row (source pointer remains in the same place) */
837 dst += dst_stride * sizeof(uint16_t);
838 dst_u16 = (uint16_t *)dst;
840 /* Blit second half of input row row to next row of output */
841 for (col = 0; col < width; col++)
842 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
844 dst += dst_stride * sizeof(uint16_t);
845 src += src_stride * sizeof(uint16_t);
848 /* Input and output image are the same size and the MJpeg decoder has done per-component
849 deinterleaving, so blitting here is straightforward. */
851 for (line = 0; line < height; line++) {
852 uint16_t *dst_u16 = (uint16_t *)dst;
853 uint16_t *src_u16 = (uint16_t *)src;
855 for (col = 0; col < width; col++)
856 *dst_u16++ = dng_process_color16(*src_u16++, s->dng_lut, s->black_level, scale_factor);
858 dst += dst_stride * sizeof(uint16_t);
859 src += src_stride * sizeof(uint16_t);
862 for (line = 0; line < height; line++) {
863 uint8_t *dst_u8 = dst;
864 const uint8_t *src_u8 = src;
866 for (col = 0; col < width; col++)
867 *dst_u8++ = dng_process_color8(*src_u8++, 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 if (tile_byte_count < 0 || tile_byte_count > bytestream2_get_bytes_left(&s->gb))
887 return AVERROR_INVALIDDATA;
889 /* Prepare a packet and send to the MJPEG decoder */
890 av_init_packet(&jpkt);
891 jpkt.data = (uint8_t*)s->gb.buffer;
892 jpkt.size = tile_byte_count;
895 MJpegDecodeContext *mjpegdecctx = s->avctx_mjpeg->priv_data;
896 /* We have to set this information here, there is no way to know if a given JPEG is a DNG-embedded
897 image or not from its own data (and we need that information when decoding it). */
898 mjpegdecctx->bayer = 1;
901 ret = avcodec_send_packet(s->avctx_mjpeg, &jpkt);
903 av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
907 ret = avcodec_receive_frame(s->avctx_mjpeg, s->jpgframe);
909 av_log(avctx, AV_LOG_ERROR, "JPEG decoding error: %s.\n", av_err2str(ret));
911 /* Normally skip, error if explode */
912 if (avctx->err_recognition & AV_EF_EXPLODE)
913 return AVERROR_INVALIDDATA;
918 is_u16 = (s->bpp > 8);
920 /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */
922 if (s->jpgframe->width != s->avctx_mjpeg->width ||
923 s->jpgframe->height != s->avctx_mjpeg->height ||
924 s->jpgframe->format != s->avctx_mjpeg->pix_fmt)
925 return AVERROR_INVALIDDATA;
927 /* See dng_blit for explanation */
928 if (s->avctx_mjpeg->width == w * 2 &&
929 s->avctx_mjpeg->height == h / 2 &&
930 s->avctx_mjpeg->pix_fmt == AV_PIX_FMT_GRAY16LE) {
932 } else if (s->avctx_mjpeg->width >= w &&
933 s->avctx_mjpeg->height >= h &&
934 s->avctx_mjpeg->pix_fmt == (is_u16 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8)
938 return AVERROR_INVALIDDATA;
940 pixel_size = (is_u16 ? sizeof(uint16_t) : sizeof(uint8_t));
942 if (is_single_comp && !is_u16) {
943 av_log(s->avctx, AV_LOG_ERROR, "DNGs with bpp <= 8 and 1 component are unsupported\n");
944 av_frame_unref(s->jpgframe);
945 return AVERROR_PATCHWELCOME;
948 dst_offset = dst_x + frame->linesize[0] * dst_y / pixel_size;
949 dst_data = frame->data[0] + dst_offset * pixel_size;
950 src_data = s->jpgframe->data[0];
954 frame->linesize[0] / pixel_size,
956 s->jpgframe->linesize[0] / pixel_size,
962 av_frame_unref(s->jpgframe);
967 static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame,
968 const AVPacket *avpkt)
970 TiffContext *s = avctx->priv_data;
972 int tile_offset_offset, tile_offset;
973 int tile_byte_count_offset, tile_byte_count;
974 int tile_count_x, tile_count_y;
975 int tile_width, tile_length;
976 int has_width_leftover, has_height_leftover;
977 int tile_x = 0, tile_y = 0;
978 int pos_x = 0, pos_y = 0;
981 s->jpgframe->width = s->tile_width;
982 s->jpgframe->height = s->tile_length;
984 s->avctx_mjpeg->width = s->tile_width;
985 s->avctx_mjpeg->height = s->tile_length;
987 has_width_leftover = (s->width % s->tile_width != 0);
988 has_height_leftover = (s->height % s->tile_length != 0);
990 /* Calculate tile counts (round up) */
991 tile_count_x = (s->width + s->tile_width - 1) / s->tile_width;
992 tile_count_y = (s->height + s->tile_length - 1) / s->tile_length;
994 /* Iterate over the number of tiles */
995 for (tile_idx = 0; tile_idx < s->tile_count; tile_idx++) {
996 tile_x = tile_idx % tile_count_x;
997 tile_y = tile_idx / tile_count_x;
999 if (has_width_leftover && tile_x == tile_count_x - 1) // If on the right-most tile
1000 tile_width = s->width % s->tile_width;
1002 tile_width = s->tile_width;
1004 if (has_height_leftover && tile_y == tile_count_y - 1) // If on the bottom-most tile
1005 tile_length = s->height % s->tile_length;
1007 tile_length = s->tile_length;
1009 /* Read tile offset */
1010 tile_offset_offset = s->tile_offsets_offset + tile_idx * sizeof(int);
1011 bytestream2_seek(&s->gb, tile_offset_offset, SEEK_SET);
1012 tile_offset = ff_tget_long(&s->gb, s->le);
1014 /* Read tile byte size */
1015 tile_byte_count_offset = s->tile_byte_counts_offset + tile_idx * sizeof(int);
1016 bytestream2_seek(&s->gb, tile_byte_count_offset, SEEK_SET);
1017 tile_byte_count = ff_tget_long(&s->gb, s->le);
1019 /* Seek to tile data */
1020 bytestream2_seek(&s->gb, tile_offset, SEEK_SET);
1022 /* Decode JPEG tile and copy it in the reference frame */
1023 ret = dng_decode_jpeg(avctx, frame, tile_byte_count, pos_x, pos_y, tile_width, tile_length);
1028 /* Advance current positions */
1029 pos_x += tile_width;
1030 if (tile_x == tile_count_x - 1) { // If on the right edge
1032 pos_y += tile_length;
1036 /* Frame is ready to be output */
1037 frame->pict_type = AV_PICTURE_TYPE_I;
1038 frame->key_frame = 1;
1043 static int dng_decode_strip(AVCodecContext *avctx, AVFrame *frame)
1045 TiffContext *s = avctx->priv_data;
1047 s->jpgframe->width = s->width;
1048 s->jpgframe->height = s->height;
1050 s->avctx_mjpeg->width = s->width;
1051 s->avctx_mjpeg->height = s->height;
1053 return dng_decode_jpeg(avctx, frame, s->stripsize, 0, 0, s->width, s->height);
1056 static int init_image(TiffContext *s, ThreadFrame *frame)
1059 int create_gray_palette = 0;
1061 // make sure there is no aliasing in the following switch
1062 if (s->bpp >= 100 || s->bppcount >= 10) {
1063 av_log(s->avctx, AV_LOG_ERROR,
1064 "Unsupported image parameters: bpp=%d, bppcount=%d\n",
1065 s->bpp, s->bppcount);
1066 return AVERROR_INVALIDDATA;
1069 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount + s->is_bayer * 10000) {
1071 if (!s->palette_is_set) {
1072 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
1077 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
1078 if (!s->palette_is_set) {
1079 create_gray_palette = 1;
1083 s->avctx->pix_fmt = s->palette_is_set ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
1086 s->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
1089 switch (AV_RL32(s->pattern)) {
1091 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB8;
1094 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR8;
1097 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG8;
1100 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG8;
1103 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1104 AV_RL32(s->pattern));
1105 return AVERROR_PATCHWELCOME;
1112 switch (AV_RL32(s->pattern)) {
1114 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_RGGB16;
1117 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_BGGR16;
1120 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GBRG16;
1123 s->avctx->pix_fmt = AV_PIX_FMT_BAYER_GRBG16;
1126 av_log(s->avctx, AV_LOG_ERROR, "Unsupported Bayer pattern: 0x%X\n",
1127 AV_RL32(s->pattern));
1128 return AVERROR_PATCHWELCOME;
1132 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1133 if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
1134 s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
1135 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
1136 s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
1137 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
1138 s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
1139 } else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
1140 s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
1141 } else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
1142 s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1143 } else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
1144 s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
1146 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
1147 return AVERROR_PATCHWELCOME;
1150 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
1153 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
1156 s->avctx->pix_fmt = AV_PIX_FMT_YA8;
1159 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_YA16LE : AV_PIX_FMT_YA16BE;
1162 s->avctx->pix_fmt = s->photometric == TIFF_PHOTOMETRIC_SEPARATED ? AV_PIX_FMT_RGB0 : AV_PIX_FMT_RGBA;
1165 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED)
1166 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
1168 av_log(s->avctx, AV_LOG_ERROR,
1169 "bpp=40 without PHOTOMETRIC_SEPARATED is unsupported\n");
1170 return AVERROR_PATCHWELCOME;
1174 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
1177 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
1180 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
1183 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1186 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
1189 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
1192 av_log(s->avctx, AV_LOG_ERROR,
1193 "This format is not supported (bpp=%d, bppcount=%d)\n",
1194 s->bpp, s->bppcount);
1195 return AVERROR_INVALIDDATA;
1198 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
1199 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
1200 if((desc->flags & AV_PIX_FMT_FLAG_RGB) ||
1201 !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
1202 desc->nb_components < 3) {
1203 av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr variant\n");
1204 return AVERROR_INVALIDDATA;
1208 if (s->width != s->avctx->width || s->height != s->avctx->height) {
1209 ret = ff_set_dimensions(s->avctx, s->width, s->height);
1213 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
1215 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
1216 if (!create_gray_palette)
1217 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
1219 /* make default grayscale pal */
1221 uint32_t *pal = (uint32_t *)frame->f->data[1];
1222 for (i = 0; i < 1<<s->bpp; i++)
1223 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
1229 static void set_sar(TiffContext *s, unsigned tag, unsigned num, unsigned den)
1231 int offset = tag == TIFF_YRES ? 2 : 0;
1232 s->res[offset++] = num;
1233 s->res[offset] = den;
1234 if (s->res[0] && s->res[1] && s->res[2] && s->res[3]) {
1235 uint64_t num = s->res[2] * (uint64_t)s->res[1];
1236 uint64_t den = s->res[0] * (uint64_t)s->res[3];
1237 if (num > INT64_MAX || den > INT64_MAX) {
1241 av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
1242 num, den, INT32_MAX);
1243 if (!s->avctx->sample_aspect_ratio.den)
1244 s->avctx->sample_aspect_ratio = (AVRational) {0, 1};
1248 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
1250 AVFrameSideData *sd;
1251 GetByteContext gb_temp;
1252 unsigned tag, type, count, off, value = 0, value2 = 1; // value2 is a denominator so init. to 1
1258 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
1262 if (tag <= s->last_tag)
1263 return AVERROR_INVALIDDATA;
1265 // We ignore TIFF_STRIP_SIZE as it is sometimes in the logic but wrong order around TIFF_STRIP_OFFS
1266 if (tag != TIFF_STRIP_SIZE)
1269 off = bytestream2_tell(&s->gb);
1275 value = ff_tget(&s->gb, type, s->le);
1278 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1279 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1281 av_log(s->avctx, AV_LOG_ERROR, "Invalid denominator in rational\n");
1282 return AVERROR_INVALIDDATA;
1297 s->is_thumbnail = (value != 0);
1306 if (count > 5 || count <= 0) {
1307 av_log(s->avctx, AV_LOG_ERROR,
1308 "This format is not supported (bpp=%d, %d components)\n",
1310 return AVERROR_INVALIDDATA;
1312 s->bppcount = count;
1321 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
1322 return AVERROR_INVALIDDATA;
1323 for (i = 0; i < count; i++)
1324 s->bpp += ff_tget(&s->gb, type, s->le);
1331 case TIFF_SAMPLES_PER_PIXEL:
1333 av_log(s->avctx, AV_LOG_ERROR,
1334 "Samples per pixel requires a single value, many provided\n");
1335 return AVERROR_INVALIDDATA;
1337 if (value > 5 || value <= 0) {
1338 av_log(s->avctx, AV_LOG_ERROR,
1339 "Invalid samples per pixel %d\n", value);
1340 return AVERROR_INVALIDDATA;
1342 if (s->bppcount == 1)
1344 s->bppcount = value;
1348 av_log(s->avctx, AV_LOG_DEBUG, "compression: %d\n", s->compr);
1354 case TIFF_CCITT_RLE:
1361 case TIFF_ADOBE_DEFLATE:
1365 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
1366 return AVERROR(ENOSYS);
1376 av_log(s->avctx, AV_LOG_ERROR, "LZMA not compiled in\n");
1377 return AVERROR(ENOSYS);
1380 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
1382 return AVERROR_INVALIDDATA;
1385 case TIFF_ROWSPERSTRIP:
1386 if (!value || (type == TIFF_LONG && value == UINT_MAX))
1388 s->rps = FFMIN(value, s->height);
1390 case TIFF_STRIP_OFFS:
1392 if (value > INT_MAX) {
1393 av_log(s->avctx, AV_LOG_ERROR,
1394 "strippos %u too large\n", value);
1395 return AVERROR_INVALIDDATA;
1398 s->stripoff = value;
1406 case TIFF_STRIP_SIZE:
1408 if (value > INT_MAX) {
1409 av_log(s->avctx, AV_LOG_ERROR,
1410 "stripsize %u too large\n", value);
1411 return AVERROR_INVALIDDATA;
1413 s->stripsizesoff = 0;
1414 s->stripsize = value;
1417 s->stripsizesoff = off;
1424 set_sar(s, tag, value, value2);
1426 case TIFF_TILE_OFFSETS:
1427 s->tile_offsets_offset = off;
1428 s->tile_count = count;
1431 case TIFF_TILE_BYTE_COUNTS:
1432 s->tile_byte_counts_offset = off;
1434 case TIFF_TILE_LENGTH:
1435 s->tile_length = value;
1437 case TIFF_TILE_WIDTH:
1438 s->tile_width = value;
1440 case TIFF_PREDICTOR:
1441 s->predictor = value;
1447 s->sub_ifd = ff_tget(&s->gb, TIFF_LONG, s->le); /** Only get the first SubIFD */
1449 case DNG_LINEARIZATION_TABLE:
1450 if (count > FF_ARRAY_ELEMS(s->dng_lut))
1451 return AVERROR_INVALIDDATA;
1452 for (int i = 0; i < count; i++)
1453 s->dng_lut[i] = ff_tget(&s->gb, type, s->le);
1455 case DNG_BLACK_LEVEL:
1456 if (count > 1) { /* Use the first value in the pattern (assume they're all the same) */
1457 if (type == TIFF_RATIONAL) {
1458 value = ff_tget(&s->gb, TIFF_LONG, s->le);
1459 value2 = ff_tget(&s->gb, TIFF_LONG, s->le);
1461 av_log(s->avctx, AV_LOG_ERROR, "Invalid black level denominator\n");
1462 return AVERROR_INVALIDDATA;
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");
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;
1685 case TIFF_ICC_PROFILE:
1687 bytestream2_seek(&gb_temp, SEEK_SET, off);
1689 if (bytestream2_get_bytes_left(&gb_temp) < count)
1690 return AVERROR_INVALIDDATA;
1692 sd = av_frame_new_side_data(frame, AV_FRAME_DATA_ICC_PROFILE, count);
1694 return AVERROR(ENOMEM);
1696 bytestream2_get_bufferu(&gb_temp, sd->data, count);
1699 ADD_METADATA(count, "artist", NULL);
1701 case TIFF_COPYRIGHT:
1702 ADD_METADATA(count, "copyright", NULL);
1705 ADD_METADATA(count, "date", NULL);
1707 case TIFF_DOCUMENT_NAME:
1708 ADD_METADATA(count, "document_name", NULL);
1710 case TIFF_HOST_COMPUTER:
1711 ADD_METADATA(count, "computer", NULL);
1713 case TIFF_IMAGE_DESCRIPTION:
1714 ADD_METADATA(count, "description", NULL);
1717 ADD_METADATA(count, "make", NULL);
1720 ADD_METADATA(count, "model", NULL);
1722 case TIFF_PAGE_NAME:
1723 ADD_METADATA(count, "page_name", NULL);
1725 case TIFF_PAGE_NUMBER:
1726 ADD_METADATA(count, "page_number", " / ");
1727 // need to seek back to re-read the page number
1728 bytestream2_seek(&s->gb, -count * sizeof(uint16_t), SEEK_CUR);
1729 // read the page number
1730 s->cur_page = ff_tget(&s->gb, TIFF_SHORT, s->le);
1731 // get back to where we were before the previous seek
1732 bytestream2_seek(&s->gb, count * sizeof(uint16_t) - sizeof(uint16_t), SEEK_CUR);
1734 case TIFF_SOFTWARE_NAME:
1735 ADD_METADATA(count, "software", NULL);
1739 unsigned int ver[4];
1740 ver[0] = ff_tget(&s->gb, type, s->le);
1741 ver[1] = ff_tget(&s->gb, type, s->le);
1742 ver[2] = ff_tget(&s->gb, type, s->le);
1743 ver[3] = ff_tget(&s->gb, type, s->le);
1745 av_log(s->avctx, AV_LOG_DEBUG, "DNG file, version %u.%u.%u.%u\n",
1746 ver[0], ver[1], ver[2], ver[3]);
1748 tiff_set_type(s, TIFF_TYPE_DNG);
1751 case CINEMADNG_TIME_CODES:
1752 case CINEMADNG_FRAME_RATE:
1753 case CINEMADNG_T_STOP:
1754 case CINEMADNG_REEL_NAME:
1755 case CINEMADNG_CAMERA_LABEL:
1756 tiff_set_type(s, TIFF_TYPE_CINEMADNG);
1759 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1760 av_log(s->avctx, AV_LOG_ERROR,
1761 "Unknown or unsupported tag %d/0x%0X\n",
1763 return AVERROR_INVALIDDATA;
1768 av_log(s->avctx, AV_LOG_ERROR,
1769 "This format is not supported (bpp=%d, %d components)\n",
1772 return AVERROR_INVALIDDATA;
1774 bytestream2_seek(&s->gb, start, SEEK_SET);
1778 static int decode_frame(AVCodecContext *avctx,
1779 void *data, int *got_frame, AVPacket *avpkt)
1781 TiffContext *const s = avctx->priv_data;
1782 AVFrame *const p = data;
1783 ThreadFrame frame = { .f = data };
1784 unsigned off, last_off;
1785 int le, ret, plane, planes;
1786 int i, j, entries, stride;
1787 unsigned soff, ssize;
1789 GetByteContext stripsizes;
1790 GetByteContext stripdata;
1791 int retry_for_subifd, retry_for_page;
1793 int has_tile_bits, has_strip_bits;
1795 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1797 // parse image header
1798 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
1799 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
1801 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1802 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1803 return AVERROR_INVALIDDATA;
1806 // TIFF_BPP is not a required tag and defaults to 1
1808 s->tiff_type = TIFF_TYPE_TIFF;
1810 s->is_thumbnail = 0;
1811 s->bppcount = s->bpp = 1;
1812 s->photometric = TIFF_PHOTOMETRIC_NONE;
1813 s->compr = TIFF_RAW;
1822 for (i = 0; i < 65536; i++)
1827 // Reset these offsets so we can tell if they were set this frame
1828 s->stripsizesoff = s->strippos = 0;
1829 /* parse image file directory */
1830 bytestream2_seek(&s->gb, off, SEEK_SET);
1831 entries = ff_tget_short(&s->gb, le);
1832 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1833 return AVERROR_INVALIDDATA;
1834 for (i = 0; i < entries; i++) {
1835 if ((ret = tiff_decode_tag(s, p)) < 0)
1839 if (s->get_thumbnail && !s->is_thumbnail) {
1840 av_log(avctx, AV_LOG_INFO, "No embedded thumbnail present\n");
1844 /** whether we should process this IFD's SubIFD */
1845 retry_for_subifd = s->sub_ifd && (s->get_subimage || (!s->get_thumbnail && s->is_thumbnail));
1846 /** whether we should process this multi-page IFD's next page */
1847 retry_for_page = s->get_page && s->cur_page + 1 < s->get_page; // get_page is 1-indexed
1850 if (retry_for_page) {
1851 // set offset to the next IFD
1852 off = ff_tget_long(&s->gb, le);
1853 } else if (retry_for_subifd) {
1854 // set offset to the SubIFD
1858 if (retry_for_subifd || retry_for_page) {
1860 av_log(avctx, AV_LOG_ERROR, "Requested entry not found\n");
1861 return AVERROR_INVALIDDATA;
1863 if (off <= last_off) {
1864 avpriv_request_sample(s->avctx, "non increasing IFD offset");
1865 return AVERROR_INVALIDDATA;
1867 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1868 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1869 return AVERROR_INVALIDDATA;
1875 /* At this point we've decided on which (Sub)IFD to process */
1877 is_dng = (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type == TIFF_TYPE_CINEMADNG);
1879 for (i = 0; i<s->geotag_count; i++) {
1880 const char *keyname = get_geokey_name(s->geotags[i].key);
1882 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1885 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1886 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1889 ret = av_dict_set(&p->metadata, keyname, s->geotags[i].val, 0);
1891 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1899 if (s->bpp % s->bppcount)
1900 return AVERROR_INVALIDDATA;
1901 bps = s->bpp / s->bppcount;
1902 if (bps < 8 || bps > 32)
1903 return AVERROR_INVALIDDATA;
1905 if (s->white_level == 0)
1906 s->white_level = (1LL << bps) - 1; /* Default value as per the spec */
1908 if (s->white_level <= s->black_level) {
1909 av_log(avctx, AV_LOG_ERROR, "BlackLevel (%"PRId32") must be less than WhiteLevel (%"PRId32")\n",
1910 s->black_level, s->white_level);
1911 return AVERROR_INVALIDDATA;
1915 return AVERROR_PATCHWELCOME;
1918 if (!s->is_tiled && !s->strippos && !s->stripoff) {
1919 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1920 return AVERROR_INVALIDDATA;
1923 has_tile_bits = s->is_tiled || s->tile_byte_counts_offset || s->tile_offsets_offset || s->tile_width || s->tile_length || s->tile_count;
1924 has_strip_bits = s->strippos || s->strips || s->stripoff || s->rps || s->sot || s->sstype || s->stripsize || s->stripsizesoff;
1926 if (has_tile_bits && has_strip_bits) {
1927 int tiled_dng = s->is_tiled && is_dng;
1928 av_log(avctx, tiled_dng ? AV_LOG_WARNING : AV_LOG_ERROR, "Tiled TIFF is not allowed to strip\n");
1930 return AVERROR_INVALIDDATA;
1933 /* now we have the data and may start decoding */
1934 if ((ret = init_image(s, &frame)) < 0)
1937 if (!s->is_tiled || has_strip_bits) {
1938 if (s->strips == 1 && !s->stripsize) {
1939 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1940 s->stripsize = avpkt->size - s->stripoff;
1943 if (s->stripsizesoff) {
1944 if (s->stripsizesoff >= (unsigned)avpkt->size)
1945 return AVERROR_INVALIDDATA;
1946 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff,
1947 avpkt->size - s->stripsizesoff);
1950 if (s->strippos >= (unsigned)avpkt->size)
1951 return AVERROR_INVALIDDATA;
1952 bytestream2_init(&stripdata, avpkt->data + s->strippos,
1953 avpkt->size - s->strippos);
1956 if (s->rps <= 0 || s->rps % s->subsampling[1]) {
1957 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1958 return AVERROR_INVALIDDATA;
1962 if (s->photometric == TIFF_PHOTOMETRIC_LINEAR_RAW ||
1963 s->photometric == TIFF_PHOTOMETRIC_CFA) {
1964 p->color_trc = AVCOL_TRC_LINEAR;
1965 } else if (s->photometric == TIFF_PHOTOMETRIC_BLACK_IS_ZERO) {
1966 p->color_trc = AVCOL_TRC_GAMMA22;
1969 /* Handle DNG images with JPEG-compressed tiles */
1971 if (is_dng && s->is_tiled) {
1973 avpriv_report_missing_feature(avctx, "DNG uncompressed tiled images");
1974 return AVERROR_PATCHWELCOME;
1975 } else if (!s->is_bayer) {
1976 avpriv_report_missing_feature(avctx, "DNG JPG-compressed tiled non-bayer-encoded images");
1977 return AVERROR_PATCHWELCOME;
1979 if ((ret = dng_decode_tiles(avctx, (AVFrame*)data, avpkt)) > 0)
1985 /* Handle TIFF images and DNG images with uncompressed strips (non-tiled) */
1987 planes = s->planar ? s->bppcount : 1;
1988 for (plane = 0; plane < planes; plane++) {
1989 uint8_t *five_planes = NULL;
1990 int remaining = avpkt->size;
1992 stride = p->linesize[plane];
1993 dst = p->data[plane];
1994 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
1995 s->avctx->pix_fmt == AV_PIX_FMT_RGBA) {
1996 stride = stride * 5 / 4;
1998 dst = av_malloc(stride * s->height);
2000 return AVERROR(ENOMEM);
2002 for (i = 0; i < s->height; i += s->rps) {
2004 dst += s->rps * stride;
2005 if (s->stripsizesoff)
2006 ssize = ff_tget(&stripsizes, s->sstype, le);
2008 ssize = s->stripsize;
2011 soff = ff_tget(&stripdata, s->sot, le);
2015 if (soff > avpkt->size || ssize > avpkt->size - soff || ssize > remaining) {
2016 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
2017 av_freep(&five_planes);
2018 return AVERROR_INVALIDDATA;
2021 if ((ret = tiff_unpack_strip(s, p, dst, stride, avpkt->data + soff, ssize, i,
2022 FFMIN(s->rps, s->height - i))) < 0) {
2023 if (avctx->err_recognition & AV_EF_EXPLODE) {
2024 av_freep(&five_planes);
2030 decoded_height = FFMIN(i, s->height);
2032 if (s->predictor == 2) {
2033 if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
2034 av_log(s->avctx, AV_LOG_ERROR, "predictor == 2 with YUV is unsupported");
2035 return AVERROR_PATCHWELCOME;
2037 dst = five_planes ? five_planes : p->data[plane];
2040 soff = FFMAX(soff / s->bppcount, 1);
2041 ssize = s->width * soff;
2042 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
2043 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
2044 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16LE ||
2045 s->avctx->pix_fmt == AV_PIX_FMT_YA16LE ||
2046 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
2047 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
2048 for (i = 0; i < decoded_height; i++) {
2049 for (j = soff; j < ssize; j += 2)
2050 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
2053 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
2054 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
2055 s->avctx->pix_fmt == AV_PIX_FMT_GRAY16BE ||
2056 s->avctx->pix_fmt == AV_PIX_FMT_YA16BE ||
2057 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
2058 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
2059 for (i = 0; i < decoded_height; i++) {
2060 for (j = soff; j < ssize; j += 2)
2061 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
2065 for (i = 0; i < decoded_height; i++) {
2066 for (j = soff; j < ssize; j++)
2067 dst[j] += dst[j - soff];
2073 if (s->photometric == TIFF_PHOTOMETRIC_WHITE_IS_ZERO) {
2074 int c = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255);
2075 dst = p->data[plane];
2076 for (i = 0; i < s->height; i++) {
2077 for (j = 0; j < stride; j++)
2078 dst[j] = c - dst[j];
2083 if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2084 (s->avctx->pix_fmt == AV_PIX_FMT_RGB0 || s->avctx->pix_fmt == AV_PIX_FMT_RGBA)) {
2085 int x = s->avctx->pix_fmt == AV_PIX_FMT_RGB0 ? 4 : 5;
2086 uint8_t *src = five_planes ? five_planes : p->data[plane];
2087 dst = p->data[plane];
2088 for (i = 0; i < s->height; i++) {
2089 for (j = 0; j < s->width; j++) {
2090 int k = 255 - src[x * j + 3];
2091 int r = (255 - src[x * j ]) * k;
2092 int g = (255 - src[x * j + 1]) * k;
2093 int b = (255 - src[x * j + 2]) * k;
2094 dst[4 * j ] = r * 257 >> 16;
2095 dst[4 * j + 1] = g * 257 >> 16;
2096 dst[4 * j + 2] = b * 257 >> 16;
2097 dst[4 * j + 3] = s->avctx->pix_fmt == AV_PIX_FMT_RGBA ? src[x * j + 4] : 255;
2100 dst += p->linesize[plane];
2102 av_freep(&five_planes);
2103 } else if (s->photometric == TIFF_PHOTOMETRIC_SEPARATED &&
2104 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
2105 dst = p->data[plane];
2106 for (i = 0; i < s->height; i++) {
2107 for (j = 0; j < s->width; j++) {
2108 uint64_t k = 65535 - AV_RB16(dst + 8 * j + 6);
2109 uint64_t r = (65535 - AV_RB16(dst + 8 * j )) * k;
2110 uint64_t g = (65535 - AV_RB16(dst + 8 * j + 2)) * k;
2111 uint64_t b = (65535 - AV_RB16(dst + 8 * j + 4)) * k;
2112 AV_WB16(dst + 8 * j , r * 65537 >> 32);
2113 AV_WB16(dst + 8 * j + 2, g * 65537 >> 32);
2114 AV_WB16(dst + 8 * j + 4, b * 65537 >> 32);
2115 AV_WB16(dst + 8 * j + 6, 65535);
2117 dst += p->linesize[plane];
2122 if (s->planar && s->bppcount > 2) {
2123 FFSWAP(uint8_t*, p->data[0], p->data[2]);
2124 FFSWAP(int, p->linesize[0], p->linesize[2]);
2125 FFSWAP(uint8_t*, p->data[0], p->data[1]);
2126 FFSWAP(int, p->linesize[0], p->linesize[1]);
2129 if (s->is_bayer && s->white_level && s->bpp == 16 && !is_dng) {
2130 uint16_t *dst = (uint16_t *)p->data[0];
2131 for (i = 0; i < s->height; i++) {
2132 for (j = 0; j < s->width; j++)
2133 dst[j] = FFMIN((dst[j] / (float)s->white_level) * 65535, 65535);
2143 static av_cold int tiff_init(AVCodecContext *avctx)
2145 TiffContext *s = avctx->priv_data;
2146 const AVCodec *codec;
2152 s->subsampling[1] = 1;
2154 ff_lzw_decode_open(&s->lzw);
2156 return AVERROR(ENOMEM);
2157 ff_ccitt_unpack_init();
2159 /* Allocate JPEG frame */
2160 s->jpgframe = av_frame_alloc();
2162 return AVERROR(ENOMEM);
2164 /* Prepare everything needed for JPEG decoding */
2165 codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
2168 s->avctx_mjpeg = avcodec_alloc_context3(codec);
2169 if (!s->avctx_mjpeg)
2170 return AVERROR(ENOMEM);
2171 s->avctx_mjpeg->flags = avctx->flags;
2172 s->avctx_mjpeg->flags2 = avctx->flags2;
2173 s->avctx_mjpeg->dct_algo = avctx->dct_algo;
2174 s->avctx_mjpeg->idct_algo = avctx->idct_algo;
2175 ret = avcodec_open2(s->avctx_mjpeg, codec, NULL);
2183 static av_cold int tiff_end(AVCodecContext *avctx)
2185 TiffContext *const s = avctx->priv_data;
2189 ff_lzw_decode_close(&s->lzw);
2190 av_freep(&s->deinvert_buf);
2191 s->deinvert_buf_size = 0;
2192 av_freep(&s->yuv_line);
2193 s->yuv_line_size = 0;
2194 av_freep(&s->fax_buffer);
2195 s->fax_buffer_size = 0;
2196 av_frame_free(&s->jpgframe);
2197 avcodec_free_context(&s->avctx_mjpeg);
2201 #define OFFSET(x) offsetof(TiffContext, x)
2202 static const AVOption tiff_options[] = {
2203 { "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 },
2204 { "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 },
2205 { "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 },
2209 static const AVClass tiff_decoder_class = {
2210 .class_name = "TIFF decoder",
2211 .item_name = av_default_item_name,
2212 .option = tiff_options,
2213 .version = LIBAVUTIL_VERSION_INT,
2216 AVCodec ff_tiff_decoder = {
2218 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
2219 .type = AVMEDIA_TYPE_VIDEO,
2220 .id = AV_CODEC_ID_TIFF,
2221 .priv_data_size = sizeof(TiffContext),
2224 .decode = decode_frame,
2225 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
2226 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
2227 .priv_class = &tiff_decoder_class,