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 return ((TiffGeoTagKeyName*)bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key))->name;
145 static char *get_geokey_val(int key, int val)
149 if (val == TIFF_GEO_KEY_UNDEFINED)
150 return av_strdup("undefined");
151 if (val == TIFF_GEO_KEY_USER_DEFINED)
152 return av_strdup("User-Defined");
154 #define RET_GEOKEY_VAL(TYPE, array)\
155 if (val >= TIFF_##TYPE##_OFFSET &&\
156 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
157 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
160 case TIFF_GT_MODEL_TYPE_GEOKEY:
161 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
163 case TIFF_GT_RASTER_TYPE_GEOKEY:
164 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
166 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
167 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
168 case TIFF_VERTICAL_UNITS_GEOKEY:
169 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
171 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
172 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
173 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
175 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
176 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
177 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
179 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
180 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
181 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
183 case TIFF_GEOG_ELLIPSOID_GEOKEY:
184 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
186 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
187 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
189 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
190 return av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
192 case TIFF_PROJECTION_GEOKEY:
193 return av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
195 case TIFF_PROJ_COORD_TRANS_GEOKEY:
196 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
198 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
199 RET_GEOKEY_VAL(VERT_CS, vert_cs);
200 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
207 snprintf(ap, 14, "Unknown-%d", val);
211 static char *doubles2str(double *dp, int count, const char *sep)
216 if (!sep) sep = ", ";
217 component_len = 15 + strlen(sep);
218 ap = av_malloc(component_len * count);
223 for (i = 0; i < count; i++) {
224 unsigned l = snprintf(ap, component_len, "%f%s", dp[i], sep);
225 if(l >= component_len) {
231 ap0[strlen(ap0) - strlen(sep)] = '\0';
235 static char *shorts2str(int16_t *sp, int count, const char *sep)
239 if (!sep) sep = ", ";
240 ap = av_malloc((5 + strlen(sep)) * count);
245 for (i = 0; i < count; i++) {
246 int l = snprintf(ap, 5 + strlen(sep), "%d%s", sp[i], sep);
249 ap0[strlen(ap0) - strlen(sep)] = '\0';
253 static int add_doubles_metadata(int count,
254 const char *name, const char *sep,
261 if (count >= INT_MAX / sizeof(int64_t) || count <= 0)
262 return AVERROR_INVALIDDATA;
263 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
264 return AVERROR_INVALIDDATA;
266 dp = av_malloc(count * sizeof(double));
268 return AVERROR(ENOMEM);
270 for (i = 0; i < count; i++)
271 dp[i] = tget_double(&s->gb, s->le);
272 ap = doubles2str(dp, count, sep);
275 return AVERROR(ENOMEM);
276 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
280 static int add_shorts_metadata(int count, const char *name,
281 const char *sep, TiffContext *s)
287 if (count >= INT_MAX / sizeof(int16_t) || count <= 0)
288 return AVERROR_INVALIDDATA;
289 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int16_t))
290 return AVERROR_INVALIDDATA;
292 sp = av_malloc(count * sizeof(int16_t));
294 return AVERROR(ENOMEM);
296 for (i = 0; i < count; i++)
297 sp[i] = tget_short(&s->gb, s->le);
298 ap = shorts2str(sp, count, sep);
301 return AVERROR(ENOMEM);
302 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
306 static int add_string_metadata(int count, const char *name,
311 if (bytestream2_get_bytes_left(&s->gb) < count || count < 0)
312 return AVERROR_INVALIDDATA;
314 value = av_malloc(count + 1);
316 return AVERROR(ENOMEM);
318 bytestream2_get_bufferu(&s->gb, value, count);
321 av_dict_set(&s->picture.metadata, name, value, AV_DICT_DONT_STRDUP_VAL);
325 static int add_metadata(int count, int type,
326 const char *name, const char *sep, TiffContext *s)
329 case TIFF_DOUBLE: return add_doubles_metadata(count, name, sep, s);
330 case TIFF_SHORT : return add_shorts_metadata(count, name, sep, s);
331 case TIFF_STRING: return add_string_metadata(count, name, s);
332 default : return AVERROR_INVALIDDATA;
337 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
340 z_stream zstream = { 0 };
343 zstream.next_in = (uint8_t *)src;
344 zstream.avail_in = size;
345 zstream.next_out = dst;
346 zstream.avail_out = *len;
347 zret = inflateInit(&zstream);
349 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
352 zret = inflate(&zstream, Z_SYNC_FLUSH);
353 inflateEnd(&zstream);
354 *len = zstream.total_out;
355 return zret == Z_STREAM_END ? Z_OK : zret;
359 static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
360 int usePtr, const uint8_t *src,
361 uint8_t c, int width, int offset)
365 while (--width >= 0) {
366 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
367 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
368 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
369 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
370 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
371 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
372 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
373 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
377 while (--width >= 0) {
378 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
379 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
380 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
381 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
385 while (--width >= 0) {
386 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
387 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
392 memcpy(dst + offset, src, width);
394 memset(dst + offset, c, width);
399 static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
400 const uint8_t *src, int size, int lines)
402 int c, line, pixels, code, ret;
403 const uint8_t *ssrc = src;
404 int width = ((s->width * s->bpp) + 7) >> 3;
407 return AVERROR_INVALIDDATA;
410 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
411 uint8_t *src2 = NULL, *zbuf;
412 unsigned long outlen;
414 outlen = width * lines;
415 zbuf = av_malloc(outlen);
417 return AVERROR(ENOMEM);
419 src2 = av_malloc((unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE);
421 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
423 return AVERROR(ENOMEM);
425 for (i = 0; i < size; i++)
426 src2[i] = ff_reverse[src[i]];
427 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
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);
437 return AVERROR_UNKNOWN;
440 for (line = 0; line < lines; line++) {
441 if(s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8){
442 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
444 memcpy(dst, src, width);
454 if (s->compr == TIFF_LZW) {
457 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
458 if (!s->deinvert_buf)
459 return AVERROR(ENOMEM);
460 for (i = 0; i < size; i++)
461 s->deinvert_buf[i] = ff_reverse[src[i]];
462 src = s->deinvert_buf;
465 if (size > 1 && !src[0] && (src[1]&1)) {
466 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
468 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
469 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
473 if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3
474 || s->compr == TIFF_G4) {
476 uint8_t *src2 = av_malloc((unsigned)size +
477 FF_INPUT_BUFFER_PADDING_SIZE);
480 av_log(s->avctx, AV_LOG_ERROR,
481 "Error allocating temporary buffer\n");
482 return AVERROR(ENOMEM);
484 if (s->fax_opts & 2) {
485 av_log(s->avctx, AV_LOG_ERROR,
486 "Uncompressed fax mode is not supported (yet)\n");
488 return AVERROR_INVALIDDATA;
490 if (!s->fill_order) {
491 memcpy(src2, src, size);
493 for (i = 0; i < size; i++)
494 src2[i] = ff_reverse[src[i]];
496 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
501 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
502 s->compr, s->fax_opts);
505 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
506 for (line = 0; line < lines; line++) {
507 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
513 for (line = 0; line < lines; line++) {
514 if (src - ssrc > size) {
515 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
516 return AVERROR_INVALIDDATA;
520 if (ssrc + size - src < width)
521 return AVERROR_INVALIDDATA;
522 if (!s->fill_order) {
523 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
524 dst, 1, src, 0, width, 0);
527 for (i = 0; i < width; i++)
528 dst[i] = ff_reverse[src[i]];
533 for (pixels = 0; pixels < width;) {
534 if (ssrc + size - src < 2) {
535 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
536 return AVERROR_INVALIDDATA;
538 code = (int8_t) * src++;
541 if (pixels + code > width) {
542 av_log(s->avctx, AV_LOG_ERROR,
543 "Copy went out of bounds\n");
544 return AVERROR_INVALIDDATA;
546 if (ssrc + size - src < code) {
547 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
548 return AVERROR_INVALIDDATA;
550 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
551 dst, 1, src, 0, code, pixels);
554 } else if (code != -128) { // -127..-1
556 if (pixels + code > width) {
557 av_log(s->avctx, AV_LOG_ERROR,
558 "Run went out of bounds\n");
559 return AVERROR_INVALIDDATA;
562 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
563 dst, 0, NULL, c, code, pixels);
569 pixels = ff_lzw_decode(s->lzw, dst, width);
570 if (pixels < width) {
571 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
573 return AVERROR_INVALIDDATA;
575 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
576 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
584 static int init_image(TiffContext *s)
589 switch (s->bpp * 10 + s->bppcount) {
591 if (!s->palette_is_set) {
592 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
598 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
601 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
604 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
607 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
610 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
613 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
616 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
619 av_log(s->avctx, AV_LOG_ERROR,
620 "This format is not supported (bpp=%d, bppcount=%d)\n",
621 s->bpp, s->bppcount);
622 return AVERROR_INVALIDDATA;
624 if (s->width != s->avctx->width || s->height != s->avctx->height) {
625 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
627 avcodec_set_dimensions(s->avctx, s->width, s->height);
629 if (s->picture.data[0])
630 s->avctx->release_buffer(s->avctx, &s->picture);
631 if ((ret = ff_get_buffer(s->avctx, &s->picture)) < 0) {
632 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
635 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
636 if (s->palette_is_set) {
637 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
639 /* make default grayscale pal */
640 pal = (uint32_t *) s->picture.data[1];
641 for (i = 0; i < 1<<s->bpp; i++)
642 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
648 static int tiff_decode_tag(TiffContext *s)
650 unsigned tag, type, count, off, value = 0;
651 int i, j, k, pos, start;
656 tag = tget_short(&s->gb, s->le);
657 type = tget_short(&s->gb, s->le);
658 count = tget_long(&s->gb, s->le);
659 off = tget_long(&s->gb, s->le);
660 start = bytestream2_tell(&s->gb);
662 if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) {
663 av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n",
672 bytestream2_seek(&s->gb, -4, SEEK_CUR);
673 value = tget(&s->gb, type, s->le);
680 bytestream2_seek(&s->gb, -4, SEEK_CUR);
685 bytestream2_seek(&s->gb, off, SEEK_SET);
688 if (count <= 4 && type_sizes[type] * count <= 4) {
689 bytestream2_seek(&s->gb, -4, SEEK_CUR);
691 bytestream2_seek(&s->gb, off, SEEK_SET);
705 av_log(s->avctx, AV_LOG_ERROR,
706 "This format is not supported (bpp=%d, %d components)\n",
708 return AVERROR_INVALIDDATA;
715 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) +
716 ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
721 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
722 return AVERROR_INVALIDDATA;
723 for (i = 0; i < count; i++)
724 s->bpp += tget(&s->gb, type, s->le);
731 case TIFF_SAMPLES_PER_PIXEL:
733 av_log(s->avctx, AV_LOG_ERROR,
734 "Samples per pixel requires a single value, many provided\n");
735 return AVERROR_INVALIDDATA;
737 if (s->bppcount == 1)
755 case TIFF_ADOBE_DEFLATE:
759 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
760 return AVERROR(ENOSYS);
764 av_log(s->avctx, AV_LOG_ERROR,
765 "JPEG compression is not supported\n");
766 return AVERROR_PATCHWELCOME;
768 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
770 return AVERROR_INVALIDDATA;
773 case TIFF_ROWSPERSTRIP:
774 if (type == TIFF_LONG && value == UINT_MAX)
777 av_log(s->avctx, AV_LOG_ERROR,
778 "Incorrect value of rows per strip\n");
779 return AVERROR_INVALIDDATA;
783 case TIFF_STRIP_OFFS:
793 if (s->strippos > bytestream2_size(&s->gb)) {
794 av_log(s->avctx, AV_LOG_ERROR,
795 "Tag referencing position outside the image\n");
796 return AVERROR_INVALIDDATA;
799 case TIFF_STRIP_SIZE:
801 s->stripsizesoff = 0;
802 s->stripsize = value;
805 s->stripsizesoff = off;
809 if (s->stripsizesoff > bytestream2_size(&s->gb)) {
810 av_log(s->avctx, AV_LOG_ERROR,
811 "Tag referencing position outside the image\n");
812 return AVERROR_INVALIDDATA;
815 case TIFF_TILE_BYTE_COUNTS:
816 case TIFF_TILE_LENGTH:
817 case TIFF_TILE_OFFSETS:
818 case TIFF_TILE_WIDTH:
819 av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
820 return AVERROR_PATCHWELCOME;
823 s->predictor = value;
837 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
839 return AVERROR_INVALIDDATA;
842 case TIFF_FILL_ORDER:
843 if (value < 1 || value > 2) {
844 av_log(s->avctx, AV_LOG_ERROR,
845 "Unknown FillOrder value %d, trying default one\n", value);
848 s->fill_order = value - 1;
851 pal = (uint32_t *) s->palette;
852 off = type_sizes[type];
853 if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
854 return AVERROR_INVALIDDATA;
855 off = (type_sizes[type] - 1) << 3;
856 for (k = 2; k >= 0; k--) {
857 for (i = 0; i < count / 3; i++) {
859 pal[i] = 0xFFU << 24;
860 j = (tget(&s->gb, type, s->le) >> off) << (k * 8);
864 s->palette_is_set = 1;
868 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
869 return AVERROR_PATCHWELCOME;
873 if (s->compr == TIFF_G3)
877 if (s->compr == TIFF_G4)
880 #define ADD_METADATA(count, name, sep)\
881 if ((ret = add_metadata(count, type, name, sep, s)) < 0) {\
882 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
885 case TIFF_MODEL_PIXEL_SCALE:
886 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
888 case TIFF_MODEL_TRANSFORMATION:
889 ADD_METADATA(count, "ModelTransformationTag", NULL);
891 case TIFF_MODEL_TIEPOINT:
892 ADD_METADATA(count, "ModelTiepointTag", NULL);
894 case TIFF_GEO_KEY_DIRECTORY:
895 ADD_METADATA(1, "GeoTIFF_Version", NULL);
896 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
897 s->geotag_count = tget_short(&s->gb, s->le);
898 if (s->geotag_count > count / 4 - 1) {
899 s->geotag_count = count / 4 - 1;
900 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
902 if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4)
904 s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
906 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
907 return AVERROR(ENOMEM);
909 for (i = 0; i < s->geotag_count; i++) {
910 s->geotags[i].key = tget_short(&s->gb, s->le);
911 s->geotags[i].type = tget_short(&s->gb, s->le);
912 s->geotags[i].count = tget_short(&s->gb, s->le);
914 if (!s->geotags[i].type)
915 s->geotags[i].val = get_geokey_val(s->geotags[i].key, tget_short(&s->gb, s->le));
917 s->geotags[i].offset = tget_short(&s->gb, s->le);
920 case TIFF_GEO_DOUBLE_PARAMS:
921 if (count >= INT_MAX / sizeof(int64_t))
922 return AVERROR_INVALIDDATA;
923 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
924 return AVERROR_INVALIDDATA;
925 dp = av_malloc(count * sizeof(double));
927 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
928 return AVERROR(ENOMEM);
930 for (i = 0; i < count; i++)
931 dp[i] = tget_double(&s->gb, s->le);
932 for (i = 0; i < s->geotag_count; i++) {
933 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
934 if (s->geotags[i].count == 0
935 || s->geotags[i].offset + s->geotags[i].count > count) {
936 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
938 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
940 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
942 return AVERROR(ENOMEM);
944 s->geotags[i].val = ap;
950 case TIFF_GEO_ASCII_PARAMS:
951 pos = bytestream2_tell(&s->gb);
952 for (i = 0; i < s->geotag_count; i++) {
953 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
954 if (s->geotags[i].count == 0
955 || s->geotags[i].offset + s->geotags[i].count > count) {
956 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
960 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
961 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
962 return AVERROR_INVALIDDATA;
963 ap = av_malloc(s->geotags[i].count);
965 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
966 return AVERROR(ENOMEM);
968 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
969 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
970 s->geotags[i].val = ap;
976 ADD_METADATA(count, "artist", NULL);
979 ADD_METADATA(count, "copyright", NULL);
982 ADD_METADATA(count, "date", NULL);
984 case TIFF_DOCUMENT_NAME:
985 ADD_METADATA(count, "document_name", NULL);
987 case TIFF_HOST_COMPUTER:
988 ADD_METADATA(count, "computer", NULL);
990 case TIFF_IMAGE_DESCRIPTION:
991 ADD_METADATA(count, "description", NULL);
994 ADD_METADATA(count, "make", NULL);
997 ADD_METADATA(count, "model", NULL);
1000 ADD_METADATA(count, "page_name", NULL);
1002 case TIFF_PAGE_NUMBER:
1003 ADD_METADATA(count, "page_number", " / ");
1005 case TIFF_SOFTWARE_NAME:
1006 ADD_METADATA(count, "software", NULL);
1009 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n",
1012 bytestream2_seek(&s->gb, start, SEEK_SET);
1016 static int decode_frame(AVCodecContext *avctx,
1017 void *data, int *got_frame, AVPacket *avpkt)
1019 TiffContext *const s = avctx->priv_data;
1020 AVFrame *picture = data;
1021 AVFrame *const p = &s->picture;
1026 unsigned soff, ssize;
1028 GetByteContext stripsizes;
1029 GetByteContext stripdata;
1031 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1033 //parse image header
1034 if (avpkt->size < 8)
1035 return AVERROR_INVALIDDATA;
1036 id = bytestream2_get_le16u(&s->gb);
1039 else if (id == 0x4D4D)
1042 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
1043 return AVERROR_INVALIDDATA;
1046 // TIFF_BPP is not a required tag and defaults to 1
1047 s->bppcount = s->bpp = 1;
1049 s->compr = TIFF_RAW;
1052 /* metadata has been destroyed from lavc internals, that pointer is not
1054 s->picture.metadata = NULL;
1056 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
1057 // that further identifies the file as a TIFF file"
1058 if (tget_short(&s->gb, le) != 42) {
1059 av_log(avctx, AV_LOG_ERROR,
1060 "The answer to life, universe and everything is not correct!\n");
1061 return AVERROR_INVALIDDATA;
1063 // Reset these offsets so we can tell if they were set this frame
1064 s->stripsizesoff = s->strippos = 0;
1065 /* parse image file directory */
1066 off = tget_long(&s->gb, le);
1067 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1068 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1069 return AVERROR_INVALIDDATA;
1071 bytestream2_seek(&s->gb, off, SEEK_SET);
1072 entries = tget_short(&s->gb, le);
1073 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1074 return AVERROR_INVALIDDATA;
1075 for (i = 0; i < entries; i++) {
1076 if ((ret = tiff_decode_tag(s)) < 0)
1080 for (i = 0; i<s->geotag_count; i++) {
1081 const char *keyname = get_geokey_name(s->geotags[i].key);
1083 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1086 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1087 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1090 ret = av_dict_set(&s->picture.metadata, keyname, s->geotags[i].val, 0);
1092 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1097 if (!s->strippos && !s->stripoff) {
1098 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1099 return AVERROR_INVALIDDATA;
1101 /* now we have the data and may start decoding */
1102 if ((ret = init_image(s)) < 0)
1105 if (s->strips == 1 && !s->stripsize) {
1106 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1107 s->stripsize = avpkt->size - s->stripoff;
1109 stride = p->linesize[0];
1112 if (s->stripsizesoff) {
1113 if (s->stripsizesoff >= (unsigned)avpkt->size)
1114 return AVERROR_INVALIDDATA;
1115 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
1118 if (s->strippos >= (unsigned)avpkt->size)
1119 return AVERROR_INVALIDDATA;
1120 bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
1124 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1125 return AVERROR_INVALIDDATA;
1128 for (i = 0; i < s->height; i += s->rps) {
1129 if (s->stripsizesoff)
1130 ssize = tget(&stripsizes, s->sstype, s->le);
1132 ssize = s->stripsize;
1135 soff = tget(&stripdata, s->sot, s->le);
1139 if (soff > avpkt->size || ssize > avpkt->size - soff) {
1140 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1141 return AVERROR_INVALIDDATA;
1143 if (tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize,
1144 FFMIN(s->rps, s->height - i)) < 0)
1146 dst += s->rps * stride;
1148 if (s->predictor == 2) {
1151 ssize = s->width * soff;
1152 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
1153 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE) {
1154 for (i = 0; i < s->height; i++) {
1155 for (j = soff; j < ssize; j += 2)
1156 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
1159 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
1160 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
1161 for (i = 0; i < s->height; i++) {
1162 for (j = soff; j < ssize; j += 2)
1163 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
1167 for (i = 0; i < s->height; i++) {
1168 for (j = soff; j < ssize; j++)
1169 dst[j] += dst[j - soff];
1176 dst = s->picture.data[0];
1177 for (i = 0; i < s->height; i++) {
1178 for (j = 0; j < s->picture.linesize[0]; j++)
1179 dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
1180 dst += s->picture.linesize[0];
1183 *picture = s->picture;
1189 static av_cold int tiff_init(AVCodecContext *avctx)
1191 TiffContext *s = avctx->priv_data;
1196 avcodec_get_frame_defaults(&s->picture);
1197 avctx->coded_frame = &s->picture;
1198 ff_lzw_decode_open(&s->lzw);
1199 ff_ccitt_unpack_init();
1204 static av_cold int tiff_end(AVCodecContext *avctx)
1206 TiffContext *const s = avctx->priv_data;
1210 ff_lzw_decode_close(&s->lzw);
1211 av_freep(&s->deinvert_buf);
1212 if (s->picture.data[0])
1213 avctx->release_buffer(avctx, &s->picture);
1217 AVCodec ff_tiff_decoder = {
1219 .type = AVMEDIA_TYPE_VIDEO,
1220 .id = AV_CODEC_ID_TIFF,
1221 .priv_data_size = sizeof(TiffContext),
1224 .decode = decode_frame,
1225 .capabilities = CODEC_CAP_DR1,
1226 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),