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"
37 #include "libavutil/common.h"
38 #include "libavutil/intreadwrite.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/avstring.h"
42 typedef struct TiffContext {
43 AVCodecContext *avctx;
48 unsigned int bpp, bppcount;
49 uint32_t palette[256];
58 int strips, rps, sstype;
60 int stripsizesoff, stripsize, stripoff, strippos;
67 static unsigned tget_short(GetByteContext *gb, int le)
69 unsigned v = le ? bytestream2_get_le16u(gb) : bytestream2_get_be16u(gb);
73 static unsigned tget_long(GetByteContext *gb, int le)
75 unsigned v = le ? bytestream2_get_le32u(gb) : bytestream2_get_be32u(gb);
79 static double tget_double(GetByteContext *gb, int le)
81 av_alias64 i = { .u64 = le ? bytestream2_get_le64u(gb) : bytestream2_get_be64u(gb)};
85 static unsigned tget(GetByteContext *gb, int type, int le)
88 case TIFF_BYTE : return bytestream2_get_byteu(gb);
89 case TIFF_SHORT: return tget_short(gb, le);
90 case TIFF_LONG : return tget_long(gb, le);
91 default : return UINT_MAX;
95 static void free_geotags(TiffContext *const s)
98 for (i = 0; i < s->geotag_count; i++) {
99 if (s->geotags[i].val)
100 av_freep(&s->geotags[i].val);
102 av_freep(&s->geotags);
105 #define RET_GEOKEY(TYPE, array, element)\
106 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
107 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
108 return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
110 static const char *get_geokey_name(int key)
112 RET_GEOKEY(VERT, vert, name);
113 RET_GEOKEY(PROJ, proj, name);
114 RET_GEOKEY(GEOG, geog, name);
115 RET_GEOKEY(CONF, conf, name);
120 static int get_geokey_type(int key)
122 RET_GEOKEY(VERT, vert, type);
123 RET_GEOKEY(PROJ, proj, type);
124 RET_GEOKEY(GEOG, geog, type);
125 RET_GEOKEY(CONF, conf, type);
127 return AVERROR_INVALIDDATA;
130 static int cmp_id_key(const void *id, const void *k)
132 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
135 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
137 return ((TiffGeoTagKeyName*)bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key))->name;
140 static char *get_geokey_val(int key, int val)
144 if (val == TIFF_GEO_KEY_UNDEFINED)
145 return av_strdup("undefined");
146 if (val == TIFF_GEO_KEY_USER_DEFINED)
147 return av_strdup("User-Defined");
149 #define RET_GEOKEY_VAL(TYPE, array)\
150 if (val >= TIFF_##TYPE##_OFFSET &&\
151 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
152 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
155 case TIFF_GT_MODEL_TYPE_GEOKEY:
156 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
158 case TIFF_GT_RASTER_TYPE_GEOKEY:
159 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
161 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
162 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
163 case TIFF_VERTICAL_UNITS_GEOKEY:
164 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
166 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
167 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
168 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
170 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
171 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
172 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
174 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
175 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
176 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
178 case TIFF_GEOG_ELLIPSOID_GEOKEY:
179 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
181 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
182 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
184 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
185 return av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
187 case TIFF_PROJECTION_GEOKEY:
188 return av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
190 case TIFF_PROJ_COORD_TRANS_GEOKEY:
191 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
193 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
194 RET_GEOKEY_VAL(VERT_CS, vert_cs);
195 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
202 snprintf(ap, 14, "Unknown-%d", val);
206 static char *doubles2str(double *dp, int count, const char *sep)
210 int component_len = 15 + strlen(sep);
211 if (!sep) sep = ", ";
212 ap = av_malloc(component_len * count);
217 for (i = 0; i < count; i++) {
218 unsigned l = snprintf(ap, component_len, "%f%s", dp[i], sep);
219 if(l >= component_len)
223 ap0[strlen(ap0) - strlen(sep)] = '\0';
227 static char *shorts2str(int16_t *sp, int count, const char *sep)
231 if (!sep) sep = ", ";
232 ap = av_malloc((5 + strlen(sep)) * count);
237 for (i = 0; i < count; i++) {
238 int l = snprintf(ap, 5 + strlen(sep), "%d%s", sp[i], sep);
241 ap0[strlen(ap0) - strlen(sep)] = '\0';
245 static int add_doubles_metadata(int count,
246 const char *name, const char *sep,
253 if (count >= INT_MAX / sizeof(int64_t))
254 return AVERROR_INVALIDDATA;
255 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
256 return AVERROR_INVALIDDATA;
258 dp = av_malloc(count * sizeof(double));
260 return AVERROR(ENOMEM);
262 for (i = 0; i < count; i++)
263 dp[i] = tget_double(&s->gb, s->le);
264 ap = doubles2str(dp, count, sep);
267 return AVERROR(ENOMEM);
268 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
272 static int add_shorts_metadata(int count, const char *name,
273 const char *sep, TiffContext *s)
279 if (count >= INT_MAX / sizeof(int16_t))
280 return AVERROR_INVALIDDATA;
281 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int16_t))
282 return AVERROR_INVALIDDATA;
284 sp = av_malloc(count * sizeof(int16_t));
286 return AVERROR(ENOMEM);
288 for (i = 0; i < count; i++)
289 sp[i] = tget_short(&s->gb, s->le);
290 ap = shorts2str(sp, count, sep);
293 return AVERROR(ENOMEM);
294 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
298 static int add_string_metadata(int count, const char *name,
303 if (bytestream2_get_bytes_left(&s->gb) < count)
304 return AVERROR_INVALIDDATA;
306 value = av_malloc(count + 1);
308 return AVERROR(ENOMEM);
310 bytestream2_get_bufferu(&s->gb, value, count);
313 av_dict_set(&s->picture.metadata, name, value, AV_DICT_DONT_STRDUP_VAL);
317 static int add_metadata(int count, int type,
318 const char *name, const char *sep, TiffContext *s)
321 case TIFF_DOUBLE: return add_doubles_metadata(count, name, sep, s);
322 case TIFF_SHORT : return add_shorts_metadata(count, name, sep, s);
323 case TIFF_STRING: return add_string_metadata(count, name, s);
324 default : return AVERROR_INVALIDDATA;
329 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
332 z_stream zstream = { 0 };
335 zstream.next_in = src;
336 zstream.avail_in = size;
337 zstream.next_out = dst;
338 zstream.avail_out = *len;
339 zret = inflateInit(&zstream);
341 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
344 zret = inflate(&zstream, Z_SYNC_FLUSH);
345 inflateEnd(&zstream);
346 *len = zstream.total_out;
347 return zret == Z_STREAM_END ? Z_OK : zret;
351 static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
352 int usePtr, const uint8_t *src,
353 uint8_t c, int width, int offset)
357 while (--width >= 0) {
358 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
359 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
360 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
361 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
362 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
363 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
364 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
365 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
369 while (--width >= 0) {
370 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
371 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
372 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
373 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
377 while (--width >= 0) {
378 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
379 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
384 memcpy(dst + offset, src, width);
386 memset(dst + offset, c, width);
391 static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
392 const uint8_t *src, int size, int lines)
394 int c, line, pixels, code;
395 const uint8_t *ssrc = src;
396 int width = ((s->width * s->bpp) + 7) >> 3;
399 return AVERROR_INVALIDDATA;
402 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
404 unsigned long outlen;
406 outlen = width * lines;
407 zbuf = av_malloc(outlen);
409 return AVERROR(ENOMEM);
410 ret = tiff_uncompress(zbuf, &outlen, src, size);
412 av_log(s->avctx, AV_LOG_ERROR,
413 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
414 (unsigned long)width * lines, ret);
419 for (line = 0; line < lines; line++) {
420 if(s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8){
421 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
423 memcpy(dst, src, width);
432 if (s->compr == TIFF_LZW) {
433 if (ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0) {
434 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
438 if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3
439 || s->compr == TIFF_G4) {
441 uint8_t *src2 = av_malloc((unsigned)size +
442 FF_INPUT_BUFFER_PADDING_SIZE);
445 av_log(s->avctx, AV_LOG_ERROR,
446 "Error allocating temporary buffer\n");
447 return AVERROR(ENOMEM);
449 if (s->fax_opts & 2) {
450 av_log(s->avctx, AV_LOG_ERROR,
451 "Uncompressed fax mode is not supported (yet)\n");
455 if (!s->fill_order) {
456 memcpy(src2, src, size);
458 for (i = 0; i < size; i++)
459 src2[i] = av_reverse[src[i]];
461 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
466 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
467 s->compr, s->fax_opts);
470 if (s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8)
471 for (line = 0; line < lines; line++) {
472 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
478 for (line = 0; line < lines; line++) {
479 if (src - ssrc > size) {
480 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
485 if (ssrc + size - src < width)
486 return AVERROR_INVALIDDATA;
487 if (!s->fill_order) {
488 horizontal_fill(s->bpp * (s->avctx->pix_fmt == PIX_FMT_PAL8),
489 dst, 1, src, 0, width, 0);
492 for (i = 0; i < width; i++)
493 dst[i] = av_reverse[src[i]];
498 for (pixels = 0; pixels < width;) {
499 if (ssrc + size - src < 2) {
500 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
501 return AVERROR_INVALIDDATA;
503 code = (int8_t) * src++;
506 if (pixels + code > width) {
507 av_log(s->avctx, AV_LOG_ERROR,
508 "Copy went out of bounds\n");
511 if (ssrc + size - src < code) {
512 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
513 return AVERROR_INVALIDDATA;
515 horizontal_fill(s->bpp * (s->avctx->pix_fmt == PIX_FMT_PAL8),
516 dst, 1, src, 0, code, pixels);
519 } else if (code != -128) { // -127..-1
521 if (pixels + code > width) {
522 av_log(s->avctx, AV_LOG_ERROR,
523 "Run went out of bounds\n");
527 horizontal_fill(s->bpp * (s->avctx->pix_fmt == PIX_FMT_PAL8),
528 dst, 0, NULL, c, code, pixels);
534 pixels = ff_lzw_decode(s->lzw, dst, width);
535 if (pixels < width) {
536 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
540 if (s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8)
541 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
549 static int init_image(TiffContext *s)
554 switch (s->bpp * 10 + s->bppcount) {
556 if (!s->palette_is_set) {
557 s->avctx->pix_fmt = PIX_FMT_MONOBLACK;
563 s->avctx->pix_fmt = PIX_FMT_PAL8;
566 s->avctx->pix_fmt = PIX_FMT_RGB24;
569 s->avctx->pix_fmt = s->le ? PIX_FMT_GRAY16LE : PIX_FMT_GRAY16BE;
572 s->avctx->pix_fmt = PIX_FMT_GRAY8A;
575 s->avctx->pix_fmt = PIX_FMT_RGBA;
578 s->avctx->pix_fmt = s->le ? PIX_FMT_RGB48LE : PIX_FMT_RGB48BE;
581 s->avctx->pix_fmt = s->le ? PIX_FMT_RGBA64LE : PIX_FMT_RGBA64BE;
584 av_log(s->avctx, AV_LOG_ERROR,
585 "This format is not supported (bpp=%d, bppcount=%d)\n",
586 s->bpp, s->bppcount);
587 return AVERROR_INVALIDDATA;
589 if (s->width != s->avctx->width || s->height != s->avctx->height) {
590 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
592 avcodec_set_dimensions(s->avctx, s->width, s->height);
594 if (s->picture.data[0])
595 s->avctx->release_buffer(s->avctx, &s->picture);
596 if ((ret = s->avctx->get_buffer(s->avctx, &s->picture)) < 0) {
597 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
600 if (s->avctx->pix_fmt == PIX_FMT_PAL8) {
601 if (s->palette_is_set) {
602 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
604 /* make default grayscale pal */
605 pal = (uint32_t *) s->picture.data[1];
606 for (i = 0; i < 1<<s->bpp; i++)
607 pal[i] = 0xFF << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
613 static int tiff_decode_tag(TiffContext *s)
615 unsigned tag, type, count, off, value = 0;
616 int i, j, k, pos, start;
621 tag = tget_short(&s->gb, s->le);
622 type = tget_short(&s->gb, s->le);
623 count = tget_long(&s->gb, s->le);
624 off = tget_long(&s->gb, s->le);
625 start = bytestream2_tell(&s->gb);
627 if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) {
628 av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n",
637 bytestream2_seek(&s->gb, -4, SEEK_CUR);
638 value = tget(&s->gb, type, s->le);
645 bytestream2_seek(&s->gb, -4, SEEK_CUR);
650 bytestream2_seek(&s->gb, off, SEEK_SET);
653 if (count <= 4 && type_sizes[type] * count <= 4) {
654 bytestream2_seek(&s->gb, -4, SEEK_CUR);
656 bytestream2_seek(&s->gb, off, SEEK_SET);
670 av_log(s->avctx, AV_LOG_ERROR,
671 "This format is not supported (bpp=%d, %d components)\n",
680 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) +
681 ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
686 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
688 for (i = 0; i < count; i++)
689 s->bpp += tget(&s->gb, type, s->le);
696 case TIFF_SAMPLES_PER_PIXEL:
698 av_log(s->avctx, AV_LOG_ERROR,
699 "Samples per pixel requires a single value, many provided\n");
700 return AVERROR_INVALIDDATA;
702 if (s->bppcount == 1)
720 case TIFF_ADOBE_DEFLATE:
724 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
729 av_log(s->avctx, AV_LOG_ERROR,
730 "JPEG compression is not supported\n");
733 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
738 case TIFF_ROWSPERSTRIP:
739 if (type == TIFF_LONG && value == UINT_MAX)
740 value = s->avctx->height;
742 av_log(s->avctx, AV_LOG_ERROR,
743 "Incorrect value of rows per strip\n");
748 case TIFF_STRIP_OFFS:
758 if (s->strippos > bytestream2_size(&s->gb)) {
759 av_log(s->avctx, AV_LOG_ERROR,
760 "Tag referencing position outside the image\n");
764 case TIFF_STRIP_SIZE:
766 s->stripsizesoff = 0;
767 s->stripsize = value;
770 s->stripsizesoff = off;
774 if (s->stripsizesoff > bytestream2_size(&s->gb)) {
775 av_log(s->avctx, AV_LOG_ERROR,
776 "Tag referencing position outside the image\n");
780 case TIFF_TILE_BYTE_COUNTS:
781 case TIFF_TILE_LENGTH:
782 case TIFF_TILE_OFFSETS:
783 case TIFF_TILE_WIDTH:
784 av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
785 return AVERROR_PATCHWELCOME;
788 s->predictor = value;
802 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
807 case TIFF_FILL_ORDER:
808 if (value < 1 || value > 2) {
809 av_log(s->avctx, AV_LOG_ERROR,
810 "Unknown FillOrder value %d, trying default one\n", value);
813 s->fill_order = value - 1;
816 pal = (uint32_t *) s->palette;
817 off = type_sizes[type];
818 if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
820 off = (type_sizes[type] - 1) << 3;
821 for (k = 2; k >= 0; k--) {
822 for (i = 0; i < count / 3; i++) {
825 j = (tget(&s->gb, type, s->le) >> off) << (k * 8);
829 s->palette_is_set = 1;
833 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
838 if (s->compr == TIFF_G3)
842 if (s->compr == TIFF_G4)
845 #define ADD_METADATA(count, name, sep)\
846 if (ret = add_metadata(count, type, name, sep, s) < 0) {\
847 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
850 case TIFF_MODEL_PIXEL_SCALE:
851 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
853 case TIFF_MODEL_TRANSFORMATION:
854 ADD_METADATA(count, "ModelTransformationTag", NULL);
856 case TIFF_MODEL_TIEPOINT:
857 ADD_METADATA(count, "ModelTiepointTag", NULL);
859 case TIFF_GEO_KEY_DIRECTORY:
860 ADD_METADATA(1, "GeoTIFF_Version", NULL);
861 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
862 s->geotag_count = tget_short(&s->gb, s->le);
863 if (s->geotag_count > count / 4 - 1) {
864 s->geotag_count = count / 4 - 1;
865 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
867 if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4)
869 s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
871 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
872 return AVERROR(ENOMEM);
874 for (i = 0; i < s->geotag_count; i++) {
875 s->geotags[i].key = tget_short(&s->gb, s->le);
876 s->geotags[i].type = tget_short(&s->gb, s->le);
877 s->geotags[i].count = tget_short(&s->gb, s->le);
879 if (!s->geotags[i].type)
880 s->geotags[i].val = get_geokey_val(s->geotags[i].key, tget_short(&s->gb, s->le));
882 s->geotags[i].offset = tget_short(&s->gb, s->le);
885 case TIFF_GEO_DOUBLE_PARAMS:
886 if (count >= INT_MAX / sizeof(int64_t))
887 return AVERROR_INVALIDDATA;
888 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
889 return AVERROR_INVALIDDATA;
890 dp = av_malloc(count * sizeof(double));
892 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
893 return AVERROR(ENOMEM);
895 for (i = 0; i < count; i++)
896 dp[i] = tget_double(&s->gb, s->le);
897 for (i = 0; i < s->geotag_count; i++) {
898 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
899 if (s->geotags[i].count == 0
900 || s->geotags[i].offset + s->geotags[i].count > count) {
901 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
903 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
905 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
907 return AVERROR(ENOMEM);
909 s->geotags[i].val = ap;
915 case TIFF_GEO_ASCII_PARAMS:
916 pos = bytestream2_tell(&s->gb);
917 for (i = 0; i < s->geotag_count; i++) {
918 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
919 if (s->geotags[i].count == 0
920 || s->geotags[i].offset + s->geotags[i].count > count) {
921 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
925 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
926 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
928 ap = av_malloc(s->geotags[i].count);
930 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
931 return AVERROR(ENOMEM);
933 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
934 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
935 s->geotags[i].val = ap;
941 ADD_METADATA(count, "artist", NULL);
944 ADD_METADATA(count, "copyright", NULL);
947 ADD_METADATA(count, "date", NULL);
949 case TIFF_DOCUMENT_NAME:
950 ADD_METADATA(count, "document_name", NULL);
952 case TIFF_HOST_COMPUTER:
953 ADD_METADATA(count, "computer", NULL);
955 case TIFF_IMAGE_DESCRIPTION:
956 ADD_METADATA(count, "description", NULL);
959 ADD_METADATA(count, "make", NULL);
962 ADD_METADATA(count, "model", NULL);
965 ADD_METADATA(count, "page_name", NULL);
967 case TIFF_PAGE_NUMBER:
968 ADD_METADATA(count, "page_number", " / ");
970 case TIFF_SOFTWARE_NAME:
971 ADD_METADATA(count, "software", NULL);
974 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n",
977 bytestream2_seek(&s->gb, start, SEEK_SET);
981 static int decode_frame(AVCodecContext *avctx,
982 void *data, int *data_size, AVPacket *avpkt)
984 TiffContext *const s = avctx->priv_data;
985 AVFrame *picture = data;
986 AVFrame *const p = &s->picture;
991 unsigned soff, ssize;
993 GetByteContext stripsizes;
994 GetByteContext stripdata;
996 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1000 return AVERROR_INVALIDDATA;
1001 id = bytestream2_get_le16u(&s->gb);
1004 else if (id == 0x4D4D)
1007 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
1012 s->compr = TIFF_RAW;
1015 /* free existing metadata */
1016 av_dict_free(&s->picture.metadata);
1018 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
1019 // that further identifies the file as a TIFF file"
1020 if (tget_short(&s->gb, le) != 42) {
1021 av_log(avctx, AV_LOG_ERROR,
1022 "The answer to life, universe and everything is not correct!\n");
1025 // Reset these offsets so we can tell if they were set this frame
1026 s->stripsizesoff = s->strippos = 0;
1027 /* parse image file directory */
1028 off = tget_long(&s->gb, le);
1029 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1030 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1031 return AVERROR_INVALIDDATA;
1033 bytestream2_seek(&s->gb, off, SEEK_SET);
1034 entries = tget_short(&s->gb, le);
1035 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1036 return AVERROR_INVALIDDATA;
1037 for (i = 0; i < entries; i++) {
1038 if (tiff_decode_tag(s) < 0)
1042 for (i = 0; i<s->geotag_count; i++) {
1043 const char *keyname = get_geokey_name(s->geotags[i].key);
1045 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1048 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1049 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1052 ret = av_dict_set(&s->picture.metadata, keyname, s->geotags[i].val, 0);
1054 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1059 if (!s->strippos && !s->stripoff) {
1060 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1063 /* now we have the data and may start decoding */
1064 if ((ret = init_image(s)) < 0)
1067 if (s->strips == 1 && !s->stripsize) {
1068 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1069 s->stripsize = avpkt->size - s->stripoff;
1071 stride = p->linesize[0];
1074 if (s->stripsizesoff) {
1075 if (s->stripsizesoff >= avpkt->size)
1076 return AVERROR_INVALIDDATA;
1077 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
1080 if (s->strippos >= avpkt->size)
1081 return AVERROR_INVALIDDATA;
1082 bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
1085 for (i = 0; i < s->height; i += s->rps) {
1086 if (s->stripsizesoff)
1087 ssize = tget(&stripsizes, s->sstype, s->le);
1089 ssize = s->stripsize;
1092 soff = tget(&stripdata, s->sot, s->le);
1096 if (soff > avpkt->size || ssize > avpkt->size - soff) {
1097 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1100 if (tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize,
1101 FFMIN(s->rps, s->height - i)) < 0)
1103 dst += s->rps * stride;
1105 if (s->predictor == 2) {
1108 ssize = s->width * soff;
1109 if (s->avctx->pix_fmt == PIX_FMT_RGB48LE ||
1110 s->avctx->pix_fmt == PIX_FMT_RGBA64LE) {
1111 for (i = 0; i < s->height; i++) {
1112 for (j = soff; j < ssize; j += 2)
1113 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
1116 } else if (s->avctx->pix_fmt == PIX_FMT_RGB48BE ||
1117 s->avctx->pix_fmt == PIX_FMT_RGBA64BE) {
1118 for (i = 0; i < s->height; i++) {
1119 for (j = soff; j < ssize; j += 2)
1120 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
1124 for (i = 0; i < s->height; i++) {
1125 for (j = soff; j < ssize; j++)
1126 dst[j] += dst[j - soff];
1133 dst = s->picture.data[0];
1134 for (i = 0; i < s->height; i++) {
1135 for (j = 0; j < s->picture.linesize[0]; j++)
1136 dst[j] = (s->avctx->pix_fmt == PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
1137 dst += s->picture.linesize[0];
1140 *picture = s->picture;
1141 *data_size = sizeof(AVPicture);
1146 static av_cold int tiff_init(AVCodecContext *avctx)
1148 TiffContext *s = avctx->priv_data;
1153 avcodec_get_frame_defaults(&s->picture);
1154 avctx->coded_frame = &s->picture;
1155 ff_lzw_decode_open(&s->lzw);
1156 ff_ccitt_unpack_init();
1161 static av_cold int tiff_end(AVCodecContext *avctx)
1163 TiffContext *const s = avctx->priv_data;
1166 if (avctx->coded_frame && avctx->coded_frame->metadata)
1167 av_dict_free(&avctx->coded_frame->metadata);
1169 ff_lzw_decode_close(&s->lzw);
1170 if (s->picture.data[0])
1171 avctx->release_buffer(avctx, &s->picture);
1175 AVCodec ff_tiff_decoder = {
1177 .type = AVMEDIA_TYPE_VIDEO,
1178 .id = AV_CODEC_ID_TIFF,
1179 .priv_data_size = sizeof(TiffContext),
1182 .decode = decode_frame,
1183 .capabilities = CODEC_CAP_DR1,
1184 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),