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"
34 #include "tiff_data.h"
36 #include "libavutil/common.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/avstring.h"
41 typedef struct TiffContext {
42 AVCodecContext *avctx;
47 unsigned int bpp, bppcount;
48 uint32_t palette[256];
57 int strips, rps, sstype;
59 int stripsizesoff, stripsize, stripoff, strippos;
66 static unsigned tget_short(GetByteContext *gb, int le)
68 unsigned v = le ? bytestream2_get_le16(gb) : bytestream2_get_be16(gb);
72 static unsigned tget_long(GetByteContext *gb, int le)
74 unsigned v = le ? bytestream2_get_le32(gb) : bytestream2_get_be32(gb);
78 static double tget_double(GetByteContext *gb, int le)
80 av_alias64 i = { .u64 = le ? bytestream2_get_le64(gb) : bytestream2_get_be64(gb)};
84 static unsigned tget(GetByteContext *gb, int type, int le)
87 case TIFF_BYTE : return bytestream2_get_byte(gb);
88 case TIFF_SHORT: return tget_short(gb, le);
89 case TIFF_LONG : return tget_long(gb, le);
90 default : return UINT_MAX;
94 static void free_geotags(TiffContext *const s)
97 for (i = 0; i < s->geotag_count; i++) {
98 if (s->geotags[i].val)
99 av_freep(&s->geotags[i].val);
101 av_freep(&s->geotags);
104 #define RET_GEOKEY(TYPE, array, element)\
105 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
106 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
107 return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
109 static const char *get_geokey_name(int key)
111 RET_GEOKEY(VERT, vert, name);
112 RET_GEOKEY(PROJ, proj, name);
113 RET_GEOKEY(GEOG, geog, name);
114 RET_GEOKEY(CONF, conf, name);
119 static int get_geokey_type(int key)
121 RET_GEOKEY(VERT, vert, type);
122 RET_GEOKEY(PROJ, proj, type);
123 RET_GEOKEY(GEOG, geog, type);
124 RET_GEOKEY(CONF, conf, type);
126 return AVERROR_INVALIDDATA;
129 static int cmp_id_key(const void *id, const void *k)
131 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
134 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
136 return ((TiffGeoTagKeyName*)bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key))->name;
139 static char *get_geokey_val(int key, int val)
143 if (val == TIFF_GEO_KEY_UNDEFINED)
144 return av_strdup("undefined");
145 if (val == TIFF_GEO_KEY_USER_DEFINED)
146 return av_strdup("User-Defined");
148 #define RET_GEOKEY_VAL(TYPE, array)\
149 if (val >= TIFF_##TYPE##_OFFSET &&\
150 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
151 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
154 case TIFF_GT_MODEL_TYPE_GEOKEY:
155 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
157 case TIFF_GT_RASTER_TYPE_GEOKEY:
158 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
160 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
161 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
162 case TIFF_VERTICAL_UNITS_GEOKEY:
163 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
165 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
166 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
167 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
169 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
170 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
171 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
173 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
174 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
175 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
177 case TIFF_GEOG_ELLIPSOID_GEOKEY:
178 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
180 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
181 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
183 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
184 return av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
186 case TIFF_PROJECTION_GEOKEY:
187 return av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
189 case TIFF_PROJ_COORD_TRANS_GEOKEY:
190 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
192 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
193 RET_GEOKEY_VAL(VERT_CS, vert_cs);
194 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
201 snprintf(ap, 14, "Unknown-%d", val);
205 static char *doubles2str(double *dp, int count, const char *sep)
209 if (!sep) sep = ", ";
210 ap = av_malloc((15 + strlen(sep)) * count);
215 for (i = 0; i < count; i++) {
216 int l = snprintf(ap, 15 + strlen(sep), "%f%s", dp[i], sep);
219 ap0[strlen(ap0) - strlen(sep)] = '\0';
223 static char *shorts2str(int16_t *sp, int count, const char *sep)
227 if (!sep) sep = ", ";
228 ap = av_malloc((5 + strlen(sep)) * count);
233 for (i = 0; i < count; i++) {
234 int l = snprintf(ap, 5 + strlen(sep), "%d%s", sp[i], sep);
237 ap0[strlen(ap0) - strlen(sep)] = '\0';
241 static int add_doubles_metadata(int count,
242 const char *name, const char *sep,
249 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
252 dp = av_malloc(count * sizeof(double));
254 return AVERROR(ENOMEM);
256 for (i = 0; i < count; i++)
257 dp[i] = tget_double(&s->gb, s->le);
258 ap = doubles2str(dp, count, sep);
261 return AVERROR(ENOMEM);
262 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
266 static int add_shorts_metadata(int count, const char *name,
267 const char *sep, TiffContext *s)
273 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int16_t))
276 sp = av_malloc(count * sizeof(int16_t));
278 return AVERROR(ENOMEM);
280 for (i = 0; i < count; i++)
281 sp[i] = tget_short(&s->gb, s->le);
282 ap = shorts2str(sp, count, sep);
285 return AVERROR(ENOMEM);
286 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
290 static int add_metadata(int count, int type,
291 const char *name, const char *sep, TiffContext *s)
294 case TIFF_DOUBLE: return add_doubles_metadata(count, name, sep, s);
295 case TIFF_SHORT : return add_shorts_metadata(count, name, sep, s);
296 default : return AVERROR_INVALIDDATA;
301 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
304 z_stream zstream = { 0 };
307 zstream.next_in = src;
308 zstream.avail_in = size;
309 zstream.next_out = dst;
310 zstream.avail_out = *len;
311 zret = inflateInit(&zstream);
313 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
316 zret = inflate(&zstream, Z_SYNC_FLUSH);
317 inflateEnd(&zstream);
318 *len = zstream.total_out;
319 return zret == Z_STREAM_END ? Z_OK : zret;
323 static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
324 int usePtr, const uint8_t *src,
325 uint8_t c, int width, int offset)
329 while (--width >= 0) {
330 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
331 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
332 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
333 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
334 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
335 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
336 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
337 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
341 while (--width >= 0) {
342 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
343 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
344 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
345 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
349 while (--width >= 0) {
350 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
351 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
356 memcpy(dst + offset, src, width);
358 memset(dst + offset, c, width);
363 static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
364 const uint8_t *src, int size, int lines)
366 int c, line, pixels, code;
367 const uint8_t *ssrc = src;
368 int width = ((s->width * s->bpp) + 7) >> 3;
371 return AVERROR_INVALIDDATA;
374 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
376 unsigned long outlen;
378 outlen = width * lines;
379 zbuf = av_malloc(outlen);
381 return AVERROR(ENOMEM);
382 ret = tiff_uncompress(zbuf, &outlen, src, size);
384 av_log(s->avctx, AV_LOG_ERROR,
385 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
386 (unsigned long)width * lines, ret);
391 for (line = 0; line < lines; line++) {
392 if(s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8){
393 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
395 memcpy(dst, src, width);
404 if (s->compr == TIFF_LZW) {
405 if (ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0) {
406 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
410 if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3
411 || s->compr == TIFF_G4) {
413 uint8_t *src2 = av_malloc((unsigned)size +
414 FF_INPUT_BUFFER_PADDING_SIZE);
417 av_log(s->avctx, AV_LOG_ERROR,
418 "Error allocating temporary buffer\n");
419 return AVERROR(ENOMEM);
421 if (s->fax_opts & 2) {
422 av_log(s->avctx, AV_LOG_ERROR,
423 "Uncompressed fax mode is not supported (yet)\n");
427 if (!s->fill_order) {
428 memcpy(src2, src, size);
430 for (i = 0; i < size; i++)
431 src2[i] = av_reverse[src[i]];
433 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
438 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
439 s->compr, s->fax_opts);
442 if (s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8)
443 for (line = 0; line < lines; line++) {
444 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
450 for (line = 0; line < lines; line++) {
451 if (src - ssrc > size) {
452 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
457 if (ssrc + size - src < width)
458 return AVERROR_INVALIDDATA;
459 if (!s->fill_order) {
460 horizontal_fill(s->bpp * (s->avctx->pix_fmt == PIX_FMT_PAL8),
461 dst, 1, src, 0, width, 0);
464 for (i = 0; i < width; i++)
465 dst[i] = av_reverse[src[i]];
470 for (pixels = 0; pixels < width;) {
471 if (ssrc + size - src < 2) {
472 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
473 return AVERROR_INVALIDDATA;
475 code = (int8_t) * src++;
478 if (pixels + code > width) {
479 av_log(s->avctx, AV_LOG_ERROR,
480 "Copy went out of bounds\n");
483 if (ssrc + size - src < code) {
484 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
485 return AVERROR_INVALIDDATA;
487 horizontal_fill(s->bpp * (s->avctx->pix_fmt == PIX_FMT_PAL8),
488 dst, 1, src, 0, code, pixels);
491 } else if (code != -128) { // -127..-1
493 if (pixels + code > width) {
494 av_log(s->avctx, AV_LOG_ERROR,
495 "Run went out of bounds\n");
499 horizontal_fill(s->bpp * (s->avctx->pix_fmt == PIX_FMT_PAL8),
500 dst, 0, NULL, c, code, pixels);
506 pixels = ff_lzw_decode(s->lzw, dst, width);
507 if (pixels < width) {
508 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
512 if (s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8)
513 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
521 static int init_image(TiffContext *s)
526 switch (s->bpp * 10 + s->bppcount) {
528 if (!s->palette_is_set) {
529 s->avctx->pix_fmt = PIX_FMT_MONOBLACK;
535 s->avctx->pix_fmt = PIX_FMT_PAL8;
538 s->avctx->pix_fmt = PIX_FMT_RGB24;
541 s->avctx->pix_fmt = s->le ? PIX_FMT_GRAY16LE : PIX_FMT_GRAY16BE;
544 s->avctx->pix_fmt = PIX_FMT_GRAY8A;
547 s->avctx->pix_fmt = PIX_FMT_RGBA;
550 s->avctx->pix_fmt = s->le ? PIX_FMT_RGB48LE : PIX_FMT_RGB48BE;
553 s->avctx->pix_fmt = s->le ? PIX_FMT_RGBA64LE : PIX_FMT_RGBA64BE;
556 av_log(s->avctx, AV_LOG_ERROR,
557 "This format is not supported (bpp=%d, bppcount=%d)\n",
558 s->bpp, s->bppcount);
559 return AVERROR_INVALIDDATA;
561 if (s->width != s->avctx->width || s->height != s->avctx->height) {
562 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
564 avcodec_set_dimensions(s->avctx, s->width, s->height);
566 if (s->picture.data[0])
567 s->avctx->release_buffer(s->avctx, &s->picture);
568 if ((ret = s->avctx->get_buffer(s->avctx, &s->picture)) < 0) {
569 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
572 if (s->avctx->pix_fmt == PIX_FMT_PAL8) {
573 if (s->palette_is_set) {
574 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
576 /* make default grayscale pal */
577 pal = (uint32_t *) s->picture.data[1];
578 for (i = 0; i < 1<<s->bpp; i++)
579 pal[i] = 0xFF << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
585 static int tiff_decode_tag(TiffContext *s)
587 unsigned tag, type, count, off, value = 0;
588 int i, j, k, pos, start;
593 if (bytestream2_get_bytes_left(&s->gb) < 12)
595 tag = tget_short(&s->gb, s->le);
596 type = tget_short(&s->gb, s->le);
597 count = tget_long(&s->gb, s->le);
598 off = tget_long(&s->gb, s->le);
599 start = bytestream2_tell(&s->gb);
601 if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) {
602 av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n",
611 bytestream2_seek(&s->gb, -4, SEEK_CUR);
612 value = tget(&s->gb, type, s->le);
619 bytestream2_seek(&s->gb, -4, SEEK_CUR);
624 bytestream2_seek(&s->gb, off, SEEK_SET);
627 if (count <= 4 && type_sizes[type] * count <= 4) {
628 bytestream2_seek(&s->gb, -4, SEEK_CUR);
630 bytestream2_seek(&s->gb, off, SEEK_SET);
644 av_log(s->avctx, AV_LOG_ERROR,
645 "This format is not supported (bpp=%d, %d components)\n",
654 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) +
655 ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
660 for (i = 0; i < count && bytestream2_get_bytes_left(&s->gb) > 0; i++)
661 s->bpp += tget(&s->gb, type, s->le);
668 case TIFF_SAMPLES_PER_PIXEL:
670 av_log(s->avctx, AV_LOG_ERROR,
671 "Samples per pixel requires a single value, many provided\n");
672 return AVERROR_INVALIDDATA;
674 if (s->bppcount == 1)
692 case TIFF_ADOBE_DEFLATE:
696 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
701 av_log(s->avctx, AV_LOG_ERROR,
702 "JPEG compression is not supported\n");
705 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
710 case TIFF_ROWSPERSTRIP:
711 if (type == TIFF_LONG && value == UINT_MAX)
712 value = s->avctx->height;
714 av_log(s->avctx, AV_LOG_ERROR,
715 "Incorrect value of rows per strip\n");
720 case TIFF_STRIP_OFFS:
730 if (s->strippos > bytestream2_size(&s->gb)) {
731 av_log(s->avctx, AV_LOG_ERROR,
732 "Tag referencing position outside the image\n");
736 case TIFF_STRIP_SIZE:
738 s->stripsizesoff = 0;
739 s->stripsize = value;
742 s->stripsizesoff = off;
746 if (s->stripsizesoff > bytestream2_size(&s->gb)) {
747 av_log(s->avctx, AV_LOG_ERROR,
748 "Tag referencing position outside the image\n");
752 case TIFF_TILE_BYTE_COUNTS:
753 case TIFF_TILE_LENGTH:
754 case TIFF_TILE_OFFSETS:
755 case TIFF_TILE_WIDTH:
756 av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
757 return AVERROR_PATCHWELCOME;
760 s->predictor = value;
774 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
779 case TIFF_FILL_ORDER:
780 if (value < 1 || value > 2) {
781 av_log(s->avctx, AV_LOG_ERROR,
782 "Unknown FillOrder value %d, trying default one\n", value);
785 s->fill_order = value - 1;
788 pal = (uint32_t *) s->palette;
789 off = type_sizes[type];
790 if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
792 off = (type_sizes[type] - 1) << 3;
793 for (k = 2; k >= 0; k--) {
794 for (i = 0; i < count / 3; i++) {
797 j = (tget(&s->gb, type, s->le) >> off) << (k * 8);
801 s->palette_is_set = 1;
805 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
810 if (s->compr == TIFF_G3)
814 if (s->compr == TIFF_G4)
817 #define ADD_METADATA(count, name, sep)\
818 if (ret = add_metadata(count, type, name, sep, s) < 0) {\
819 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
822 case TIFF_MODEL_PIXEL_SCALE:
823 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
825 case TIFF_MODEL_TRANSFORMATION:
826 ADD_METADATA(count, "ModelTransformationTag", NULL);
828 case TIFF_MODEL_TIEPOINT:
829 ADD_METADATA(count, "ModelTiepointTag", NULL);
831 case TIFF_GEO_KEY_DIRECTORY:
832 ADD_METADATA(1, "GeoTIFF_Version", NULL);
833 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
834 s->geotag_count = tget_short(&s->gb, s->le);
835 if (s->geotag_count > count / 4 - 1) {
836 s->geotag_count = count / 4 - 1;
837 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
839 s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
841 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
842 return AVERROR(ENOMEM);
844 for (i = 0; i < s->geotag_count; i++) {
845 s->geotags[i].key = tget_short(&s->gb, s->le);
846 s->geotags[i].type = tget_short(&s->gb, s->le);
847 s->geotags[i].count = tget_short(&s->gb, s->le);
849 if (!s->geotags[i].type)
850 s->geotags[i].val = get_geokey_val(s->geotags[i].key, tget_short(&s->gb, s->le));
852 s->geotags[i].offset = tget_short(&s->gb, s->le);
855 case TIFF_GEO_DOUBLE_PARAMS:
856 dp = av_malloc(count * sizeof(double));
858 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
859 return AVERROR(ENOMEM);
861 for (i = 0; i < count; i++)
862 dp[i] = tget_double(&s->gb, s->le);
863 for (i = 0; i < s->geotag_count; i++) {
864 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
865 if (s->geotags[i].count == 0
866 || s->geotags[i].offset + s->geotags[i].count > count) {
867 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
869 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
871 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
873 return AVERROR(ENOMEM);
875 s->geotags[i].val = ap;
881 case TIFF_GEO_ASCII_PARAMS:
882 pos = bytestream2_tell(&s->gb);
883 for (i = 0; i < s->geotag_count; i++) {
884 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
885 if (s->geotags[i].count == 0
886 || s->geotags[i].offset + s->geotags[i].count > count) {
887 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
889 char *ap = av_malloc(s->geotags[i].count);
891 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
892 return AVERROR(ENOMEM);
894 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
895 bytestream2_get_buffer(&s->gb, ap, s->geotags[i].count);
896 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
897 s->geotags[i].val = ap;
903 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n",
906 bytestream2_seek(&s->gb, start, SEEK_SET);
910 static int decode_frame(AVCodecContext *avctx,
911 void *data, int *data_size, AVPacket *avpkt)
913 TiffContext *const s = avctx->priv_data;
914 AVFrame *picture = data;
915 AVFrame *const p = &s->picture;
920 unsigned soff, ssize;
922 GetByteContext stripsizes;
923 GetByteContext stripdata;
925 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
929 return AVERROR_INVALIDDATA;
930 id = bytestream2_get_le16(&s->gb);
933 else if (id == 0x4D4D)
936 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
944 /* free existing metadata */
945 av_dict_free(&s->picture.metadata);
947 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
948 // that further identifies the file as a TIFF file"
949 if (tget_short(&s->gb, le) != 42) {
950 av_log(avctx, AV_LOG_ERROR,
951 "The answer to life, universe and everything is not correct!\n");
954 // Reset these offsets so we can tell if they were set this frame
955 s->stripsizesoff = s->strippos = 0;
956 /* parse image file directory */
957 off = tget_long(&s->gb, le);
958 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
959 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
960 return AVERROR_INVALIDDATA;
962 bytestream2_seek(&s->gb, off, SEEK_SET);
963 entries = tget_short(&s->gb, le);
964 for (i = 0; i < entries; i++) {
965 if (tiff_decode_tag(s) < 0)
969 for (i = 0; i<s->geotag_count; i++) {
970 const char *keyname = get_geokey_name(s->geotags[i].key);
972 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
975 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
976 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
979 ret = av_dict_set(&s->picture.metadata, keyname, s->geotags[i].val, 0);
981 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
986 if (!s->strippos && !s->stripoff) {
987 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
990 /* now we have the data and may start decoding */
991 if ((ret = init_image(s)) < 0)
994 if (s->strips == 1 && !s->stripsize) {
995 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
996 s->stripsize = avpkt->size - s->stripoff;
998 stride = p->linesize[0];
1001 if (s->stripsizesoff) {
1002 if (s->stripsizesoff >= avpkt->size)
1003 return AVERROR_INVALIDDATA;
1004 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
1007 if (s->strippos >= avpkt->size)
1008 return AVERROR_INVALIDDATA;
1009 bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
1012 for (i = 0; i < s->height; i += s->rps) {
1013 if (s->stripsizesoff)
1014 ssize = tget(&stripsizes, s->sstype, s->le);
1016 ssize = s->stripsize;
1019 soff = tget(&stripdata, s->sot, s->le);
1023 if (soff > avpkt->size || ssize > avpkt->size - soff) {
1024 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1027 if (tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize,
1028 FFMIN(s->rps, s->height - i)) < 0)
1030 dst += s->rps * stride;
1032 if (s->predictor == 2) {
1035 ssize = s->width * soff;
1036 if (s->avctx->pix_fmt == PIX_FMT_RGB48LE ||
1037 s->avctx->pix_fmt == PIX_FMT_RGBA64LE) {
1038 for (i = 0; i < s->height; i++) {
1039 for (j = soff; j < ssize; j += 2)
1040 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
1043 } else if (s->avctx->pix_fmt == PIX_FMT_RGB48BE ||
1044 s->avctx->pix_fmt == PIX_FMT_RGBA64BE) {
1045 for (i = 0; i < s->height; i++) {
1046 for (j = soff; j < ssize; j += 2)
1047 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
1051 for (i = 0; i < s->height; i++) {
1052 for (j = soff; j < ssize; j++)
1053 dst[j] += dst[j - soff];
1060 dst = s->picture.data[0];
1061 for (i = 0; i < s->height; i++) {
1062 for (j = 0; j < s->picture.linesize[0]; j++)
1063 dst[j] = (s->avctx->pix_fmt == PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
1064 dst += s->picture.linesize[0];
1067 *picture = s->picture;
1068 *data_size = sizeof(AVPicture);
1073 static av_cold int tiff_init(AVCodecContext *avctx)
1075 TiffContext *s = avctx->priv_data;
1080 avcodec_get_frame_defaults(&s->picture);
1081 avctx->coded_frame = &s->picture;
1082 ff_lzw_decode_open(&s->lzw);
1083 ff_ccitt_unpack_init();
1088 static av_cold int tiff_end(AVCodecContext *avctx)
1090 TiffContext *const s = avctx->priv_data;
1093 if (avctx->coded_frame && avctx->coded_frame->metadata)
1094 av_dict_free(&avctx->coded_frame->metadata);
1096 ff_lzw_decode_close(&s->lzw);
1097 if (s->picture.data[0])
1098 avctx->release_buffer(avctx, &s->picture);
1102 AVCodec ff_tiff_decoder = {
1104 .type = AVMEDIA_TYPE_VIDEO,
1105 .id = CODEC_ID_TIFF,
1106 .priv_data_size = sizeof(TiffContext),
1109 .decode = decode_frame,
1110 .capabilities = CODEC_CAP_DR1,
1111 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),