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)
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;
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);
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 (ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0) {
466 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
470 if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3
471 || s->compr == TIFF_G4) {
473 uint8_t *src2 = av_malloc((unsigned)size +
474 FF_INPUT_BUFFER_PADDING_SIZE);
477 av_log(s->avctx, AV_LOG_ERROR,
478 "Error allocating temporary buffer\n");
479 return AVERROR(ENOMEM);
481 if (s->fax_opts & 2) {
482 av_log(s->avctx, AV_LOG_ERROR,
483 "Uncompressed fax mode is not supported (yet)\n");
487 if (!s->fill_order) {
488 memcpy(src2, src, size);
490 for (i = 0; i < size; i++)
491 src2[i] = ff_reverse[src[i]];
493 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
498 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
499 s->compr, s->fax_opts);
502 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
503 for (line = 0; line < lines; line++) {
504 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
510 for (line = 0; line < lines; line++) {
511 if (src - ssrc > size) {
512 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
517 if (ssrc + size - src < width)
518 return AVERROR_INVALIDDATA;
519 if (!s->fill_order) {
520 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
521 dst, 1, src, 0, width, 0);
524 for (i = 0; i < width; i++)
525 dst[i] = ff_reverse[src[i]];
530 for (pixels = 0; pixels < width;) {
531 if (ssrc + size - src < 2) {
532 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
533 return AVERROR_INVALIDDATA;
535 code = (int8_t) * src++;
538 if (pixels + code > width) {
539 av_log(s->avctx, AV_LOG_ERROR,
540 "Copy went out of bounds\n");
543 if (ssrc + size - src < code) {
544 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
545 return AVERROR_INVALIDDATA;
547 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
548 dst, 1, src, 0, code, pixels);
551 } else if (code != -128) { // -127..-1
553 if (pixels + code > width) {
554 av_log(s->avctx, AV_LOG_ERROR,
555 "Run went out of bounds\n");
559 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
560 dst, 0, NULL, c, code, pixels);
566 pixels = ff_lzw_decode(s->lzw, dst, width);
567 if (pixels < width) {
568 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
572 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
573 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
581 static int init_image(TiffContext *s)
586 switch (s->bpp * 10 + s->bppcount) {
588 if (!s->palette_is_set) {
589 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
595 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
598 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
601 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
604 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
607 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
610 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
613 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
616 av_log(s->avctx, AV_LOG_ERROR,
617 "This format is not supported (bpp=%d, bppcount=%d)\n",
618 s->bpp, s->bppcount);
619 return AVERROR_INVALIDDATA;
621 if (s->width != s->avctx->width || s->height != s->avctx->height) {
622 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
624 avcodec_set_dimensions(s->avctx, s->width, s->height);
626 if (s->picture.data[0])
627 s->avctx->release_buffer(s->avctx, &s->picture);
628 if ((ret = ff_get_buffer(s->avctx, &s->picture)) < 0) {
629 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
632 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
633 if (s->palette_is_set) {
634 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
636 /* make default grayscale pal */
637 pal = (uint32_t *) s->picture.data[1];
638 for (i = 0; i < 1<<s->bpp; i++)
639 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
645 static int tiff_decode_tag(TiffContext *s)
647 unsigned tag, type, count, off, value = 0;
648 int i, j, k, pos, start;
653 tag = tget_short(&s->gb, s->le);
654 type = tget_short(&s->gb, s->le);
655 count = tget_long(&s->gb, s->le);
656 off = tget_long(&s->gb, s->le);
657 start = bytestream2_tell(&s->gb);
659 if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) {
660 av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n",
669 bytestream2_seek(&s->gb, -4, SEEK_CUR);
670 value = tget(&s->gb, type, s->le);
677 bytestream2_seek(&s->gb, -4, SEEK_CUR);
682 bytestream2_seek(&s->gb, off, SEEK_SET);
685 if (count <= 4 && type_sizes[type] * count <= 4) {
686 bytestream2_seek(&s->gb, -4, SEEK_CUR);
688 bytestream2_seek(&s->gb, off, SEEK_SET);
702 av_log(s->avctx, AV_LOG_ERROR,
703 "This format is not supported (bpp=%d, %d components)\n",
712 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) +
713 ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
718 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
720 for (i = 0; i < count; i++)
721 s->bpp += tget(&s->gb, type, s->le);
728 case TIFF_SAMPLES_PER_PIXEL:
730 av_log(s->avctx, AV_LOG_ERROR,
731 "Samples per pixel requires a single value, many provided\n");
732 return AVERROR_INVALIDDATA;
734 if (s->bppcount == 1)
752 case TIFF_ADOBE_DEFLATE:
756 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
761 av_log(s->avctx, AV_LOG_ERROR,
762 "JPEG compression is not supported\n");
765 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
770 case TIFF_ROWSPERSTRIP:
771 if (type == TIFF_LONG && value == UINT_MAX)
772 value = s->avctx->height;
774 av_log(s->avctx, AV_LOG_ERROR,
775 "Incorrect value of rows per strip\n");
780 case TIFF_STRIP_OFFS:
790 if (s->strippos > bytestream2_size(&s->gb)) {
791 av_log(s->avctx, AV_LOG_ERROR,
792 "Tag referencing position outside the image\n");
796 case TIFF_STRIP_SIZE:
798 s->stripsizesoff = 0;
799 s->stripsize = value;
802 s->stripsizesoff = off;
806 if (s->stripsizesoff > bytestream2_size(&s->gb)) {
807 av_log(s->avctx, AV_LOG_ERROR,
808 "Tag referencing position outside the image\n");
812 case TIFF_TILE_BYTE_COUNTS:
813 case TIFF_TILE_LENGTH:
814 case TIFF_TILE_OFFSETS:
815 case TIFF_TILE_WIDTH:
816 av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
817 return AVERROR_PATCHWELCOME;
820 s->predictor = value;
834 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
839 case TIFF_FILL_ORDER:
840 if (value < 1 || value > 2) {
841 av_log(s->avctx, AV_LOG_ERROR,
842 "Unknown FillOrder value %d, trying default one\n", value);
845 s->fill_order = value - 1;
848 pal = (uint32_t *) s->palette;
849 off = type_sizes[type];
850 if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
852 off = (type_sizes[type] - 1) << 3;
853 for (k = 2; k >= 0; k--) {
854 for (i = 0; i < count / 3; i++) {
856 pal[i] = 0xFFU << 24;
857 j = (tget(&s->gb, type, s->le) >> off) << (k * 8);
861 s->palette_is_set = 1;
865 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
870 if (s->compr == TIFF_G3)
874 if (s->compr == TIFF_G4)
877 #define ADD_METADATA(count, name, sep)\
878 if (ret = add_metadata(count, type, name, sep, s) < 0) {\
879 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
882 case TIFF_MODEL_PIXEL_SCALE:
883 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
885 case TIFF_MODEL_TRANSFORMATION:
886 ADD_METADATA(count, "ModelTransformationTag", NULL);
888 case TIFF_MODEL_TIEPOINT:
889 ADD_METADATA(count, "ModelTiepointTag", NULL);
891 case TIFF_GEO_KEY_DIRECTORY:
892 ADD_METADATA(1, "GeoTIFF_Version", NULL);
893 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
894 s->geotag_count = tget_short(&s->gb, s->le);
895 if (s->geotag_count > count / 4 - 1) {
896 s->geotag_count = count / 4 - 1;
897 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
899 if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4)
901 s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
903 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
904 return AVERROR(ENOMEM);
906 for (i = 0; i < s->geotag_count; i++) {
907 s->geotags[i].key = tget_short(&s->gb, s->le);
908 s->geotags[i].type = tget_short(&s->gb, s->le);
909 s->geotags[i].count = tget_short(&s->gb, s->le);
911 if (!s->geotags[i].type)
912 s->geotags[i].val = get_geokey_val(s->geotags[i].key, tget_short(&s->gb, s->le));
914 s->geotags[i].offset = tget_short(&s->gb, s->le);
917 case TIFF_GEO_DOUBLE_PARAMS:
918 if (count >= INT_MAX / sizeof(int64_t))
919 return AVERROR_INVALIDDATA;
920 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
921 return AVERROR_INVALIDDATA;
922 dp = av_malloc(count * sizeof(double));
924 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
925 return AVERROR(ENOMEM);
927 for (i = 0; i < count; i++)
928 dp[i] = tget_double(&s->gb, s->le);
929 for (i = 0; i < s->geotag_count; i++) {
930 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
931 if (s->geotags[i].count == 0
932 || s->geotags[i].offset + s->geotags[i].count > count) {
933 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
935 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
937 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
939 return AVERROR(ENOMEM);
941 s->geotags[i].val = ap;
947 case TIFF_GEO_ASCII_PARAMS:
948 pos = bytestream2_tell(&s->gb);
949 for (i = 0; i < s->geotag_count; i++) {
950 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
951 if (s->geotags[i].count == 0
952 || s->geotags[i].offset + s->geotags[i].count > count) {
953 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
957 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
958 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
960 ap = av_malloc(s->geotags[i].count);
962 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
963 return AVERROR(ENOMEM);
965 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
966 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
967 s->geotags[i].val = ap;
973 ADD_METADATA(count, "artist", NULL);
976 ADD_METADATA(count, "copyright", NULL);
979 ADD_METADATA(count, "date", NULL);
981 case TIFF_DOCUMENT_NAME:
982 ADD_METADATA(count, "document_name", NULL);
984 case TIFF_HOST_COMPUTER:
985 ADD_METADATA(count, "computer", NULL);
987 case TIFF_IMAGE_DESCRIPTION:
988 ADD_METADATA(count, "description", NULL);
991 ADD_METADATA(count, "make", NULL);
994 ADD_METADATA(count, "model", NULL);
997 ADD_METADATA(count, "page_name", NULL);
999 case TIFF_PAGE_NUMBER:
1000 ADD_METADATA(count, "page_number", " / ");
1002 case TIFF_SOFTWARE_NAME:
1003 ADD_METADATA(count, "software", NULL);
1006 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n",
1009 bytestream2_seek(&s->gb, start, SEEK_SET);
1013 static int decode_frame(AVCodecContext *avctx,
1014 void *data, int *got_frame, AVPacket *avpkt)
1016 TiffContext *const s = avctx->priv_data;
1017 AVFrame *picture = data;
1018 AVFrame *const p = &s->picture;
1023 unsigned soff, ssize;
1025 GetByteContext stripsizes;
1026 GetByteContext stripdata;
1028 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1030 //parse image header
1031 if (avpkt->size < 8)
1032 return AVERROR_INVALIDDATA;
1033 id = bytestream2_get_le16u(&s->gb);
1036 else if (id == 0x4D4D)
1039 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
1043 // TIFF_BPP is not a required tag and defaults to 1
1044 s->bppcount = s->bpp = 1;
1046 s->compr = TIFF_RAW;
1049 /* metadata has been destroyed from lavc internals, that pointer is not
1051 s->picture.metadata = NULL;
1053 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
1054 // that further identifies the file as a TIFF file"
1055 if (tget_short(&s->gb, le) != 42) {
1056 av_log(avctx, AV_LOG_ERROR,
1057 "The answer to life, universe and everything is not correct!\n");
1060 // Reset these offsets so we can tell if they were set this frame
1061 s->stripsizesoff = s->strippos = 0;
1062 /* parse image file directory */
1063 off = tget_long(&s->gb, le);
1064 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1065 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1066 return AVERROR_INVALIDDATA;
1068 bytestream2_seek(&s->gb, off, SEEK_SET);
1069 entries = tget_short(&s->gb, le);
1070 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1071 return AVERROR_INVALIDDATA;
1072 for (i = 0; i < entries; i++) {
1073 if (tiff_decode_tag(s) < 0)
1077 for (i = 0; i<s->geotag_count; i++) {
1078 const char *keyname = get_geokey_name(s->geotags[i].key);
1080 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1083 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1084 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1087 ret = av_dict_set(&s->picture.metadata, keyname, s->geotags[i].val, 0);
1089 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1094 if (!s->strippos && !s->stripoff) {
1095 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1098 /* now we have the data and may start decoding */
1099 if ((ret = init_image(s)) < 0)
1102 if (s->strips == 1 && !s->stripsize) {
1103 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1104 s->stripsize = avpkt->size - s->stripoff;
1106 stride = p->linesize[0];
1109 if (s->stripsizesoff) {
1110 if (s->stripsizesoff >= (unsigned)avpkt->size)
1111 return AVERROR_INVALIDDATA;
1112 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
1115 if (s->strippos >= (unsigned)avpkt->size)
1116 return AVERROR_INVALIDDATA;
1117 bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
1121 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1122 return AVERROR_INVALIDDATA;
1125 for (i = 0; i < s->height; i += s->rps) {
1126 if (s->stripsizesoff)
1127 ssize = tget(&stripsizes, s->sstype, s->le);
1129 ssize = s->stripsize;
1132 soff = tget(&stripdata, s->sot, s->le);
1136 if (soff > avpkt->size || ssize > avpkt->size - soff) {
1137 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1140 if (tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize,
1141 FFMIN(s->rps, s->height - i)) < 0)
1143 dst += s->rps * stride;
1145 if (s->predictor == 2) {
1148 ssize = s->width * soff;
1149 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
1150 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE) {
1151 for (i = 0; i < s->height; i++) {
1152 for (j = soff; j < ssize; j += 2)
1153 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
1156 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
1157 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
1158 for (i = 0; i < s->height; i++) {
1159 for (j = soff; j < ssize; j += 2)
1160 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
1164 for (i = 0; i < s->height; i++) {
1165 for (j = soff; j < ssize; j++)
1166 dst[j] += dst[j - soff];
1173 dst = s->picture.data[0];
1174 for (i = 0; i < s->height; i++) {
1175 for (j = 0; j < s->picture.linesize[0]; j++)
1176 dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
1177 dst += s->picture.linesize[0];
1180 *picture = s->picture;
1186 static av_cold int tiff_init(AVCodecContext *avctx)
1188 TiffContext *s = avctx->priv_data;
1193 avcodec_get_frame_defaults(&s->picture);
1194 avctx->coded_frame = &s->picture;
1195 ff_lzw_decode_open(&s->lzw);
1196 ff_ccitt_unpack_init();
1201 static av_cold int tiff_end(AVCodecContext *avctx)
1203 TiffContext *const s = avctx->priv_data;
1207 ff_lzw_decode_close(&s->lzw);
1208 av_freep(&s->deinvert_buf);
1209 if (s->picture.data[0])
1210 avctx->release_buffer(avctx, &s->picture);
1214 AVCodec ff_tiff_decoder = {
1216 .type = AVMEDIA_TYPE_VIDEO,
1217 .id = AV_CODEC_ID_TIFF,
1218 .priv_data_size = sizeof(TiffContext),
1221 .decode = decode_frame,
1222 .capabilities = CODEC_CAP_DR1,
1223 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),