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
28 #include "bytestream.h"
35 #include "tiff_data.h"
39 #include "libavutil/attributes.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/imgutils.h"
42 #include "libavutil/avstring.h"
44 typedef struct TiffContext {
45 AVCodecContext *avctx;
50 unsigned int bpp, bppcount;
51 uint32_t palette[256];
60 int strips, rps, sstype;
62 int stripsizesoff, stripsize, stripoff, strippos;
65 uint8_t *deinvert_buf;
66 int deinvert_buf_size;
72 static unsigned tget_short(GetByteContext *gb, int le)
74 unsigned v = le ? bytestream2_get_le16(gb) : bytestream2_get_be16(gb);
78 static unsigned tget_long(GetByteContext *gb, int le)
80 unsigned v = le ? bytestream2_get_le32(gb) : bytestream2_get_be32(gb);
84 static double tget_double(GetByteContext *gb, int le)
86 av_alias64 i = { .u64 = le ? bytestream2_get_le64(gb) : bytestream2_get_be64(gb)};
90 static unsigned tget(GetByteContext *gb, int type, int le)
93 case TIFF_BYTE : return bytestream2_get_byte(gb);
94 case TIFF_SHORT: return tget_short(gb, le);
95 case TIFF_LONG : return tget_long(gb, le);
96 default : return UINT_MAX;
100 static void free_geotags(TiffContext *const s)
103 for (i = 0; i < s->geotag_count; i++) {
104 if (s->geotags[i].val)
105 av_freep(&s->geotags[i].val);
107 av_freep(&s->geotags);
110 #define RET_GEOKEY(TYPE, array, element)\
111 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
112 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
113 return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
115 static const char *get_geokey_name(int key)
117 RET_GEOKEY(VERT, vert, name);
118 RET_GEOKEY(PROJ, proj, name);
119 RET_GEOKEY(GEOG, geog, name);
120 RET_GEOKEY(CONF, conf, name);
125 static int get_geokey_type(int key)
127 RET_GEOKEY(VERT, vert, type);
128 RET_GEOKEY(PROJ, proj, type);
129 RET_GEOKEY(GEOG, geog, type);
130 RET_GEOKEY(CONF, conf, type);
132 return AVERROR_INVALIDDATA;
135 static int cmp_id_key(const void *id, const void *k)
137 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
140 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
142 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
149 static char *get_geokey_val(int key, int val)
153 if (val == TIFF_GEO_KEY_UNDEFINED)
154 return av_strdup("undefined");
155 if (val == TIFF_GEO_KEY_USER_DEFINED)
156 return av_strdup("User-Defined");
158 #define RET_GEOKEY_VAL(TYPE, array)\
159 if (val >= TIFF_##TYPE##_OFFSET &&\
160 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
161 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
164 case TIFF_GT_MODEL_TYPE_GEOKEY:
165 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
167 case TIFF_GT_RASTER_TYPE_GEOKEY:
168 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
170 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
171 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
172 case TIFF_VERTICAL_UNITS_GEOKEY:
173 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
175 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
176 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
177 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
179 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
180 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
181 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
183 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
184 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
185 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
187 case TIFF_GEOG_ELLIPSOID_GEOKEY:
188 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
190 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
191 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
193 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
194 ap = av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
197 case TIFF_PROJECTION_GEOKEY:
198 ap = av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
201 case TIFF_PROJ_COORD_TRANS_GEOKEY:
202 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
204 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
205 RET_GEOKEY_VAL(VERT_CS, vert_cs);
206 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
213 snprintf(ap, 14, "Unknown-%d", val);
217 static char *doubles2str(double *dp, int count, const char *sep)
222 if (!sep) sep = ", ";
223 component_len = 15 + strlen(sep);
224 ap = av_malloc(component_len * count);
229 for (i = 0; i < count; i++) {
230 unsigned l = snprintf(ap, component_len, "%f%s", dp[i], sep);
231 if(l >= component_len) {
237 ap0[strlen(ap0) - strlen(sep)] = '\0';
241 static char *shorts2str(int16_t *sp, int count, const char *sep)
245 if (!sep) sep = ", ";
246 ap = av_malloc((5 + strlen(sep)) * count);
251 for (i = 0; i < count; i++) {
252 int l = snprintf(ap, 5 + strlen(sep), "%d%s", sp[i], sep);
255 ap0[strlen(ap0) - strlen(sep)] = '\0';
259 static int add_doubles_metadata(int count,
260 const char *name, const char *sep,
267 if (count >= INT_MAX / sizeof(int64_t) || count <= 0)
268 return AVERROR_INVALIDDATA;
269 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
270 return AVERROR_INVALIDDATA;
272 dp = av_malloc(count * sizeof(double));
274 return AVERROR(ENOMEM);
276 for (i = 0; i < count; i++)
277 dp[i] = tget_double(&s->gb, s->le);
278 ap = doubles2str(dp, count, sep);
281 return AVERROR(ENOMEM);
282 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
286 static int add_shorts_metadata(int count, const char *name,
287 const char *sep, TiffContext *s)
293 if (count >= INT_MAX / sizeof(int16_t) || count <= 0)
294 return AVERROR_INVALIDDATA;
295 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int16_t))
296 return AVERROR_INVALIDDATA;
298 sp = av_malloc(count * sizeof(int16_t));
300 return AVERROR(ENOMEM);
302 for (i = 0; i < count; i++)
303 sp[i] = tget_short(&s->gb, s->le);
304 ap = shorts2str(sp, count, sep);
307 return AVERROR(ENOMEM);
308 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
312 static int add_string_metadata(int count, const char *name,
317 if (bytestream2_get_bytes_left(&s->gb) < count || count < 0)
318 return AVERROR_INVALIDDATA;
320 value = av_malloc(count + 1);
322 return AVERROR(ENOMEM);
324 bytestream2_get_bufferu(&s->gb, value, count);
327 av_dict_set(&s->picture.metadata, name, value, AV_DICT_DONT_STRDUP_VAL);
331 static int add_metadata(int count, int type,
332 const char *name, const char *sep, TiffContext *s)
335 case TIFF_DOUBLE: return add_doubles_metadata(count, name, sep, s);
336 case TIFF_SHORT : return add_shorts_metadata(count, name, sep, s);
337 case TIFF_STRING: return add_string_metadata(count, name, s);
338 default : return AVERROR_INVALIDDATA;
343 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
346 z_stream zstream = { 0 };
349 zstream.next_in = (uint8_t *)src;
350 zstream.avail_in = size;
351 zstream.next_out = dst;
352 zstream.avail_out = *len;
353 zret = inflateInit(&zstream);
355 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
358 zret = inflate(&zstream, Z_SYNC_FLUSH);
359 inflateEnd(&zstream);
360 *len = zstream.total_out;
361 return zret == Z_STREAM_END ? Z_OK : zret;
365 static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
366 int usePtr, const uint8_t *src,
367 uint8_t c, int width, int offset)
371 while (--width >= 0) {
372 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
373 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
374 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
375 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
376 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
377 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
378 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
379 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
383 while (--width >= 0) {
384 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
385 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
386 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
387 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
391 while (--width >= 0) {
392 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
393 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
398 memcpy(dst + offset, src, width);
400 memset(dst + offset, c, width);
405 static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
406 const uint8_t *src, int size, int lines)
408 int c, line, pixels, code, ret;
409 const uint8_t *ssrc = src;
410 int width = ((s->width * s->bpp) + 7) >> 3;
413 return AVERROR_INVALIDDATA;
416 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
417 uint8_t *src2 = NULL, *zbuf;
418 unsigned long outlen;
420 outlen = width * lines;
421 zbuf = av_malloc(outlen);
423 return AVERROR(ENOMEM);
425 src2 = av_malloc((unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE);
427 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
429 return AVERROR(ENOMEM);
431 for (i = 0; i < size; i++)
432 src2[i] = ff_reverse[src[i]];
433 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
436 ret = tiff_uncompress(zbuf, &outlen, src, size);
438 av_log(s->avctx, AV_LOG_ERROR,
439 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
440 (unsigned long)width * lines, ret);
443 return AVERROR_UNKNOWN;
446 for (line = 0; line < lines; line++) {
447 if(s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8){
448 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
450 memcpy(dst, src, width);
460 if (s->compr == TIFF_LZW) {
463 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
464 if (!s->deinvert_buf)
465 return AVERROR(ENOMEM);
466 for (i = 0; i < size; i++)
467 s->deinvert_buf[i] = ff_reverse[src[i]];
468 src = s->deinvert_buf;
471 if (size > 1 && !src[0] && (src[1]&1)) {
472 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
474 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
475 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
479 if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3
480 || s->compr == TIFF_G4) {
482 uint8_t *src2 = av_malloc((unsigned)size +
483 FF_INPUT_BUFFER_PADDING_SIZE);
486 av_log(s->avctx, AV_LOG_ERROR,
487 "Error allocating temporary buffer\n");
488 return AVERROR(ENOMEM);
490 if (s->fax_opts & 2) {
491 av_log(s->avctx, AV_LOG_ERROR,
492 "Uncompressed fax mode is not supported (yet)\n");
494 return AVERROR_INVALIDDATA;
496 if (!s->fill_order) {
497 memcpy(src2, src, size);
499 for (i = 0; i < size; i++)
500 src2[i] = ff_reverse[src[i]];
502 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
507 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
508 s->compr, s->fax_opts);
511 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
512 for (line = 0; line < lines; line++) {
513 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
519 for (line = 0; line < lines; line++) {
520 if (src - ssrc > size) {
521 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
522 return AVERROR_INVALIDDATA;
526 if (ssrc + size - src < width)
527 return AVERROR_INVALIDDATA;
528 if (!s->fill_order) {
529 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
530 dst, 1, src, 0, width, 0);
533 for (i = 0; i < width; i++)
534 dst[i] = ff_reverse[src[i]];
539 for (pixels = 0; pixels < width;) {
540 if (ssrc + size - src < 2) {
541 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
542 return AVERROR_INVALIDDATA;
544 code = (int8_t) * src++;
547 if (pixels + code > width) {
548 av_log(s->avctx, AV_LOG_ERROR,
549 "Copy went out of bounds\n");
550 return AVERROR_INVALIDDATA;
552 if (ssrc + size - src < code) {
553 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
554 return AVERROR_INVALIDDATA;
556 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
557 dst, 1, src, 0, code, pixels);
560 } else if (code != -128) { // -127..-1
562 if (pixels + code > width) {
563 av_log(s->avctx, AV_LOG_ERROR,
564 "Run went out of bounds\n");
565 return AVERROR_INVALIDDATA;
568 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
569 dst, 0, NULL, c, code, pixels);
575 pixels = ff_lzw_decode(s->lzw, dst, width);
576 if (pixels < width) {
577 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
579 return AVERROR_INVALIDDATA;
581 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
582 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
590 static int init_image(TiffContext *s)
595 switch (s->bpp * 10 + s->bppcount) {
597 if (!s->palette_is_set) {
598 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
604 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
607 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
610 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
613 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
616 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
619 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
622 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
625 av_log(s->avctx, AV_LOG_ERROR,
626 "This format is not supported (bpp=%d, bppcount=%d)\n",
627 s->bpp, s->bppcount);
628 return AVERROR_INVALIDDATA;
630 if (s->width != s->avctx->width || s->height != s->avctx->height) {
631 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
633 avcodec_set_dimensions(s->avctx, s->width, s->height);
635 if (s->picture.data[0])
636 s->avctx->release_buffer(s->avctx, &s->picture);
637 if ((ret = ff_get_buffer(s->avctx, &s->picture)) < 0) {
638 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
641 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
642 if (s->palette_is_set) {
643 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
645 /* make default grayscale pal */
646 pal = (uint32_t *) s->picture.data[1];
647 for (i = 0; i < 1<<s->bpp; i++)
648 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
654 static int tiff_decode_tag(TiffContext *s)
656 unsigned tag, type, count, off, value = 0;
657 int i, j, k, pos, start;
662 tag = tget_short(&s->gb, s->le);
663 type = tget_short(&s->gb, s->le);
664 count = tget_long(&s->gb, s->le);
665 off = tget_long(&s->gb, s->le);
666 start = bytestream2_tell(&s->gb);
668 if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) {
669 av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n",
678 bytestream2_seek(&s->gb, -4, SEEK_CUR);
679 value = tget(&s->gb, type, s->le);
686 bytestream2_seek(&s->gb, -4, SEEK_CUR);
691 bytestream2_seek(&s->gb, off, SEEK_SET);
694 if (count <= 4 && type_sizes[type] * count <= 4) {
695 bytestream2_seek(&s->gb, -4, SEEK_CUR);
697 bytestream2_seek(&s->gb, off, SEEK_SET);
711 av_log(s->avctx, AV_LOG_ERROR,
712 "This format is not supported (bpp=%d, %d components)\n",
714 return AVERROR_INVALIDDATA;
721 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) +
722 ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
727 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
728 return AVERROR_INVALIDDATA;
729 for (i = 0; i < count; i++)
730 s->bpp += tget(&s->gb, type, s->le);
737 case TIFF_SAMPLES_PER_PIXEL:
739 av_log(s->avctx, AV_LOG_ERROR,
740 "Samples per pixel requires a single value, many provided\n");
741 return AVERROR_INVALIDDATA;
743 if (s->bppcount == 1)
761 case TIFF_ADOBE_DEFLATE:
765 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
766 return AVERROR(ENOSYS);
770 av_log(s->avctx, AV_LOG_ERROR,
771 "JPEG compression is not supported\n");
772 return AVERROR_PATCHWELCOME;
774 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
776 return AVERROR_INVALIDDATA;
779 case TIFF_ROWSPERSTRIP:
780 if (type == TIFF_LONG && value == UINT_MAX)
783 av_log(s->avctx, AV_LOG_ERROR,
784 "Incorrect value of rows per strip\n");
785 return AVERROR_INVALIDDATA;
789 case TIFF_STRIP_OFFS:
799 if (s->strippos > bytestream2_size(&s->gb)) {
800 av_log(s->avctx, AV_LOG_ERROR,
801 "Tag referencing position outside the image\n");
802 return AVERROR_INVALIDDATA;
805 case TIFF_STRIP_SIZE:
807 s->stripsizesoff = 0;
808 s->stripsize = value;
811 s->stripsizesoff = off;
815 if (s->stripsizesoff > bytestream2_size(&s->gb)) {
816 av_log(s->avctx, AV_LOG_ERROR,
817 "Tag referencing position outside the image\n");
818 return AVERROR_INVALIDDATA;
821 case TIFF_TILE_BYTE_COUNTS:
822 case TIFF_TILE_LENGTH:
823 case TIFF_TILE_OFFSETS:
824 case TIFF_TILE_WIDTH:
825 av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
826 return AVERROR_PATCHWELCOME;
829 s->predictor = value;
843 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
845 return AVERROR_INVALIDDATA;
848 case TIFF_FILL_ORDER:
849 if (value < 1 || value > 2) {
850 av_log(s->avctx, AV_LOG_ERROR,
851 "Unknown FillOrder value %d, trying default one\n", value);
854 s->fill_order = value - 1;
857 pal = (uint32_t *) s->palette;
858 off = type_sizes[type];
859 if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
860 return AVERROR_INVALIDDATA;
861 off = (type_sizes[type] - 1) << 3;
862 for (k = 2; k >= 0; k--) {
863 for (i = 0; i < count / 3; i++) {
865 pal[i] = 0xFFU << 24;
866 j = (tget(&s->gb, type, s->le) >> off) << (k * 8);
870 s->palette_is_set = 1;
874 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
875 return AVERROR_PATCHWELCOME;
879 if (s->compr == TIFF_G3)
883 if (s->compr == TIFF_G4)
886 #define ADD_METADATA(count, name, sep)\
887 if ((ret = add_metadata(count, type, name, sep, s)) < 0) {\
888 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
891 case TIFF_MODEL_PIXEL_SCALE:
892 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
894 case TIFF_MODEL_TRANSFORMATION:
895 ADD_METADATA(count, "ModelTransformationTag", NULL);
897 case TIFF_MODEL_TIEPOINT:
898 ADD_METADATA(count, "ModelTiepointTag", NULL);
900 case TIFF_GEO_KEY_DIRECTORY:
901 ADD_METADATA(1, "GeoTIFF_Version", NULL);
902 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
903 s->geotag_count = tget_short(&s->gb, s->le);
904 if (s->geotag_count > count / 4 - 1) {
905 s->geotag_count = count / 4 - 1;
906 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
908 if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4) {
912 s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
914 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
916 return AVERROR(ENOMEM);
918 for (i = 0; i < s->geotag_count; i++) {
919 s->geotags[i].key = tget_short(&s->gb, s->le);
920 s->geotags[i].type = tget_short(&s->gb, s->le);
921 s->geotags[i].count = tget_short(&s->gb, s->le);
923 if (!s->geotags[i].type)
924 s->geotags[i].val = get_geokey_val(s->geotags[i].key, tget_short(&s->gb, s->le));
926 s->geotags[i].offset = tget_short(&s->gb, s->le);
929 case TIFF_GEO_DOUBLE_PARAMS:
930 if (count >= INT_MAX / sizeof(int64_t))
931 return AVERROR_INVALIDDATA;
932 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
933 return AVERROR_INVALIDDATA;
934 dp = av_malloc(count * sizeof(double));
936 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
937 return AVERROR(ENOMEM);
939 for (i = 0; i < count; i++)
940 dp[i] = tget_double(&s->gb, s->le);
941 for (i = 0; i < s->geotag_count; i++) {
942 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
943 if (s->geotags[i].count == 0
944 || s->geotags[i].offset + s->geotags[i].count > count) {
945 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
947 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
949 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
951 return AVERROR(ENOMEM);
953 s->geotags[i].val = ap;
959 case TIFF_GEO_ASCII_PARAMS:
960 pos = bytestream2_tell(&s->gb);
961 for (i = 0; i < s->geotag_count; i++) {
962 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
963 if (s->geotags[i].count == 0
964 || s->geotags[i].offset + s->geotags[i].count > count) {
965 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
969 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
970 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
971 return AVERROR_INVALIDDATA;
972 ap = av_malloc(s->geotags[i].count);
974 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
975 return AVERROR(ENOMEM);
977 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
978 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
979 s->geotags[i].val = ap;
985 ADD_METADATA(count, "artist", NULL);
988 ADD_METADATA(count, "copyright", NULL);
991 ADD_METADATA(count, "date", NULL);
993 case TIFF_DOCUMENT_NAME:
994 ADD_METADATA(count, "document_name", NULL);
996 case TIFF_HOST_COMPUTER:
997 ADD_METADATA(count, "computer", NULL);
999 case TIFF_IMAGE_DESCRIPTION:
1000 ADD_METADATA(count, "description", NULL);
1003 ADD_METADATA(count, "make", NULL);
1006 ADD_METADATA(count, "model", NULL);
1008 case TIFF_PAGE_NAME:
1009 ADD_METADATA(count, "page_name", NULL);
1011 case TIFF_PAGE_NUMBER:
1012 ADD_METADATA(count, "page_number", " / ");
1014 case TIFF_SOFTWARE_NAME:
1015 ADD_METADATA(count, "software", NULL);
1018 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n",
1021 bytestream2_seek(&s->gb, start, SEEK_SET);
1025 static int decode_frame(AVCodecContext *avctx,
1026 void *data, int *got_frame, AVPacket *avpkt)
1028 TiffContext *const s = avctx->priv_data;
1029 AVFrame *picture = data;
1030 AVFrame *const p = &s->picture;
1035 unsigned soff, ssize;
1037 GetByteContext stripsizes;
1038 GetByteContext stripdata;
1040 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1042 //parse image header
1043 if (avpkt->size < 8)
1044 return AVERROR_INVALIDDATA;
1045 id = bytestream2_get_le16u(&s->gb);
1048 else if (id == 0x4D4D)
1051 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
1052 return AVERROR_INVALIDDATA;
1055 // TIFF_BPP is not a required tag and defaults to 1
1056 s->bppcount = s->bpp = 1;
1058 s->compr = TIFF_RAW;
1061 /* metadata has been destroyed from lavc internals, that pointer is not
1063 s->picture.metadata = NULL;
1065 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
1066 // that further identifies the file as a TIFF file"
1067 if (tget_short(&s->gb, le) != 42) {
1068 av_log(avctx, AV_LOG_ERROR,
1069 "The answer to life, universe and everything is not correct!\n");
1070 return AVERROR_INVALIDDATA;
1072 // Reset these offsets so we can tell if they were set this frame
1073 s->stripsizesoff = s->strippos = 0;
1074 /* parse image file directory */
1075 off = tget_long(&s->gb, le);
1076 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1077 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1078 return AVERROR_INVALIDDATA;
1080 bytestream2_seek(&s->gb, off, SEEK_SET);
1081 entries = tget_short(&s->gb, le);
1082 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1083 return AVERROR_INVALIDDATA;
1084 for (i = 0; i < entries; i++) {
1085 if ((ret = tiff_decode_tag(s)) < 0)
1089 for (i = 0; i<s->geotag_count; i++) {
1090 const char *keyname = get_geokey_name(s->geotags[i].key);
1092 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1095 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1096 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1099 ret = av_dict_set(&s->picture.metadata, keyname, s->geotags[i].val, 0);
1101 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1106 if (!s->strippos && !s->stripoff) {
1107 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1108 return AVERROR_INVALIDDATA;
1110 /* now we have the data and may start decoding */
1111 if ((ret = init_image(s)) < 0)
1114 if (s->strips == 1 && !s->stripsize) {
1115 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1116 s->stripsize = avpkt->size - s->stripoff;
1118 stride = p->linesize[0];
1121 if (s->stripsizesoff) {
1122 if (s->stripsizesoff >= (unsigned)avpkt->size)
1123 return AVERROR_INVALIDDATA;
1124 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
1127 if (s->strippos >= (unsigned)avpkt->size)
1128 return AVERROR_INVALIDDATA;
1129 bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
1133 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1134 return AVERROR_INVALIDDATA;
1137 for (i = 0; i < s->height; i += s->rps) {
1138 if (s->stripsizesoff)
1139 ssize = tget(&stripsizes, s->sstype, s->le);
1141 ssize = s->stripsize;
1144 soff = tget(&stripdata, s->sot, s->le);
1148 if (soff > avpkt->size || ssize > avpkt->size - soff) {
1149 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1150 return AVERROR_INVALIDDATA;
1152 if (tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize,
1153 FFMIN(s->rps, s->height - i)) < 0)
1155 dst += s->rps * stride;
1157 if (s->predictor == 2) {
1160 ssize = s->width * soff;
1161 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
1162 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE) {
1163 for (i = 0; i < s->height; i++) {
1164 for (j = soff; j < ssize; j += 2)
1165 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
1168 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
1169 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
1170 for (i = 0; i < s->height; i++) {
1171 for (j = soff; j < ssize; j += 2)
1172 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
1176 for (i = 0; i < s->height; i++) {
1177 for (j = soff; j < ssize; j++)
1178 dst[j] += dst[j - soff];
1185 dst = s->picture.data[0];
1186 for (i = 0; i < s->height; i++) {
1187 for (j = 0; j < s->picture.linesize[0]; j++)
1188 dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
1189 dst += s->picture.linesize[0];
1192 *picture = s->picture;
1198 static av_cold int tiff_init(AVCodecContext *avctx)
1200 TiffContext *s = avctx->priv_data;
1205 avcodec_get_frame_defaults(&s->picture);
1206 avctx->coded_frame = &s->picture;
1207 ff_lzw_decode_open(&s->lzw);
1208 ff_ccitt_unpack_init();
1213 static av_cold int tiff_end(AVCodecContext *avctx)
1215 TiffContext *const s = avctx->priv_data;
1219 ff_lzw_decode_close(&s->lzw);
1220 av_freep(&s->deinvert_buf);
1221 if (s->picture.data[0])
1222 avctx->release_buffer(avctx, &s->picture);
1226 AVCodec ff_tiff_decoder = {
1228 .type = AVMEDIA_TYPE_VIDEO,
1229 .id = AV_CODEC_ID_TIFF,
1230 .priv_data_size = sizeof(TiffContext),
1233 .decode = decode_frame,
1234 .capabilities = CODEC_CAP_DR1,
1235 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),