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"
38 #include "libavutil/attributes.h"
39 #include "libavutil/intreadwrite.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/avstring.h"
43 typedef struct TiffContext {
44 AVCodecContext *avctx;
49 unsigned int bpp, bppcount;
50 uint32_t palette[256];
59 int strips, rps, sstype;
61 int stripsizesoff, stripsize, stripoff, strippos;
68 static unsigned tget_short(GetByteContext *gb, int le)
70 unsigned v = le ? bytestream2_get_le16(gb) : bytestream2_get_be16(gb);
74 static unsigned tget_long(GetByteContext *gb, int le)
76 unsigned v = le ? bytestream2_get_le32(gb) : bytestream2_get_be32(gb);
80 static double tget_double(GetByteContext *gb, int le)
82 av_alias64 i = { .u64 = le ? bytestream2_get_le64(gb) : bytestream2_get_be64(gb)};
86 static unsigned tget(GetByteContext *gb, int type, int le)
89 case TIFF_BYTE : return bytestream2_get_byte(gb);
90 case TIFF_SHORT: return tget_short(gb, le);
91 case TIFF_LONG : return tget_long(gb, le);
92 default : return UINT_MAX;
96 static void free_geotags(TiffContext *const s)
99 for (i = 0; i < s->geotag_count; i++) {
100 if (s->geotags[i].val)
101 av_freep(&s->geotags[i].val);
103 av_freep(&s->geotags);
106 #define RET_GEOKEY(TYPE, array, element)\
107 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
108 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
109 return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
111 static const char *get_geokey_name(int key)
113 RET_GEOKEY(VERT, vert, name);
114 RET_GEOKEY(PROJ, proj, name);
115 RET_GEOKEY(GEOG, geog, name);
116 RET_GEOKEY(CONF, conf, name);
121 static int get_geokey_type(int key)
123 RET_GEOKEY(VERT, vert, type);
124 RET_GEOKEY(PROJ, proj, type);
125 RET_GEOKEY(GEOG, geog, type);
126 RET_GEOKEY(CONF, conf, type);
128 return AVERROR_INVALIDDATA;
131 static int cmp_id_key(const void *id, const void *k)
133 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
136 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
138 return ((TiffGeoTagKeyName*)bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key))->name;
141 static char *get_geokey_val(int key, int val)
145 if (val == TIFF_GEO_KEY_UNDEFINED)
146 return av_strdup("undefined");
147 if (val == TIFF_GEO_KEY_USER_DEFINED)
148 return av_strdup("User-Defined");
150 #define RET_GEOKEY_VAL(TYPE, array)\
151 if (val >= TIFF_##TYPE##_OFFSET &&\
152 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
153 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
156 case TIFF_GT_MODEL_TYPE_GEOKEY:
157 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
159 case TIFF_GT_RASTER_TYPE_GEOKEY:
160 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
162 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
163 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
164 case TIFF_VERTICAL_UNITS_GEOKEY:
165 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
167 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
168 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
169 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
171 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
172 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
173 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
175 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
176 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
177 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
179 case TIFF_GEOG_ELLIPSOID_GEOKEY:
180 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
182 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
183 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
185 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
186 return av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
188 case TIFF_PROJECTION_GEOKEY:
189 return av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
191 case TIFF_PROJ_COORD_TRANS_GEOKEY:
192 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
194 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
195 RET_GEOKEY_VAL(VERT_CS, vert_cs);
196 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
203 snprintf(ap, 14, "Unknown-%d", val);
207 static char *doubles2str(double *dp, int count, const char *sep)
212 if (!sep) sep = ", ";
213 component_len = 15 + strlen(sep);
214 ap = av_malloc(component_len * count);
219 for (i = 0; i < count; i++) {
220 unsigned l = snprintf(ap, component_len, "%f%s", dp[i], sep);
221 if(l >= component_len) {
227 ap0[strlen(ap0) - strlen(sep)] = '\0';
231 static char *shorts2str(int16_t *sp, int count, const char *sep)
235 if (!sep) sep = ", ";
236 ap = av_malloc((5 + strlen(sep)) * count);
241 for (i = 0; i < count; i++) {
242 int l = snprintf(ap, 5 + strlen(sep), "%d%s", sp[i], sep);
245 ap0[strlen(ap0) - strlen(sep)] = '\0';
249 static int add_doubles_metadata(int count,
250 const char *name, const char *sep,
257 if (count >= INT_MAX / sizeof(int64_t) || count <= 0)
258 return AVERROR_INVALIDDATA;
259 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
260 return AVERROR_INVALIDDATA;
262 dp = av_malloc(count * sizeof(double));
264 return AVERROR(ENOMEM);
266 for (i = 0; i < count; i++)
267 dp[i] = tget_double(&s->gb, s->le);
268 ap = doubles2str(dp, count, sep);
271 return AVERROR(ENOMEM);
272 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
276 static int add_shorts_metadata(int count, const char *name,
277 const char *sep, TiffContext *s)
283 if (count >= INT_MAX / sizeof(int16_t) || count <= 0)
284 return AVERROR_INVALIDDATA;
285 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int16_t))
286 return AVERROR_INVALIDDATA;
288 sp = av_malloc(count * sizeof(int16_t));
290 return AVERROR(ENOMEM);
292 for (i = 0; i < count; i++)
293 sp[i] = tget_short(&s->gb, s->le);
294 ap = shorts2str(sp, count, sep);
297 return AVERROR(ENOMEM);
298 av_dict_set(&s->picture.metadata, name, ap, AV_DICT_DONT_STRDUP_VAL);
302 static int add_string_metadata(int count, const char *name,
307 if (bytestream2_get_bytes_left(&s->gb) < count)
308 return AVERROR_INVALIDDATA;
310 value = av_malloc(count + 1);
312 return AVERROR(ENOMEM);
314 bytestream2_get_bufferu(&s->gb, value, count);
317 av_dict_set(&s->picture.metadata, name, value, AV_DICT_DONT_STRDUP_VAL);
321 static int add_metadata(int count, int type,
322 const char *name, const char *sep, TiffContext *s)
325 case TIFF_DOUBLE: return add_doubles_metadata(count, name, sep, s);
326 case TIFF_SHORT : return add_shorts_metadata(count, name, sep, s);
327 case TIFF_STRING: return add_string_metadata(count, name, s);
328 default : return AVERROR_INVALIDDATA;
333 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
336 z_stream zstream = { 0 };
339 zstream.next_in = (uint8_t *)src;
340 zstream.avail_in = size;
341 zstream.next_out = dst;
342 zstream.avail_out = *len;
343 zret = inflateInit(&zstream);
345 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
348 zret = inflate(&zstream, Z_SYNC_FLUSH);
349 inflateEnd(&zstream);
350 *len = zstream.total_out;
351 return zret == Z_STREAM_END ? Z_OK : zret;
355 static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
356 int usePtr, const uint8_t *src,
357 uint8_t c, int width, int offset)
361 while (--width >= 0) {
362 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
363 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
364 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
365 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
366 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
367 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
368 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
369 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
373 while (--width >= 0) {
374 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
375 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
376 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
377 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
381 while (--width >= 0) {
382 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
383 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
388 memcpy(dst + offset, src, width);
390 memset(dst + offset, c, width);
395 static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
396 const uint8_t *src, int size, int lines)
398 int c, line, pixels, code;
399 const uint8_t *ssrc = src;
400 int width = ((s->width * s->bpp) + 7) >> 3;
403 return AVERROR_INVALIDDATA;
406 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
408 unsigned long outlen;
410 outlen = width * lines;
411 zbuf = av_malloc(outlen);
413 return AVERROR(ENOMEM);
414 ret = tiff_uncompress(zbuf, &outlen, src, size);
416 av_log(s->avctx, AV_LOG_ERROR,
417 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
418 (unsigned long)width * lines, ret);
423 for (line = 0; line < lines; line++) {
424 if(s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8){
425 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
427 memcpy(dst, src, width);
436 if (s->compr == TIFF_LZW) {
437 if (ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0) {
438 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
442 if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3
443 || s->compr == TIFF_G4) {
445 uint8_t *src2 = av_malloc((unsigned)size +
446 FF_INPUT_BUFFER_PADDING_SIZE);
449 av_log(s->avctx, AV_LOG_ERROR,
450 "Error allocating temporary buffer\n");
451 return AVERROR(ENOMEM);
453 if (s->fax_opts & 2) {
454 av_log(s->avctx, AV_LOG_ERROR,
455 "Uncompressed fax mode is not supported (yet)\n");
459 if (!s->fill_order) {
460 memcpy(src2, src, size);
462 for (i = 0; i < size; i++)
463 src2[i] = ff_reverse[src[i]];
465 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
470 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
471 s->compr, s->fax_opts);
474 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
475 for (line = 0; line < lines; line++) {
476 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
482 for (line = 0; line < lines; line++) {
483 if (src - ssrc > size) {
484 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
489 if (ssrc + size - src < width)
490 return AVERROR_INVALIDDATA;
491 if (!s->fill_order) {
492 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
493 dst, 1, src, 0, width, 0);
496 for (i = 0; i < width; i++)
497 dst[i] = ff_reverse[src[i]];
502 for (pixels = 0; pixels < width;) {
503 if (ssrc + size - src < 2) {
504 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
505 return AVERROR_INVALIDDATA;
507 code = (int8_t) * src++;
510 if (pixels + code > width) {
511 av_log(s->avctx, AV_LOG_ERROR,
512 "Copy went out of bounds\n");
515 if (ssrc + size - src < code) {
516 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
517 return AVERROR_INVALIDDATA;
519 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
520 dst, 1, src, 0, code, pixels);
523 } else if (code != -128) { // -127..-1
525 if (pixels + code > width) {
526 av_log(s->avctx, AV_LOG_ERROR,
527 "Run went out of bounds\n");
531 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
532 dst, 0, NULL, c, code, pixels);
538 pixels = ff_lzw_decode(s->lzw, dst, width);
539 if (pixels < width) {
540 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
544 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
545 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
553 static int init_image(TiffContext *s)
558 switch (s->bpp * 10 + s->bppcount) {
560 if (!s->palette_is_set) {
561 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
567 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
570 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
573 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
576 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
579 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
582 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
585 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
588 av_log(s->avctx, AV_LOG_ERROR,
589 "This format is not supported (bpp=%d, bppcount=%d)\n",
590 s->bpp, s->bppcount);
591 return AVERROR_INVALIDDATA;
593 if (s->width != s->avctx->width || s->height != s->avctx->height) {
594 if ((ret = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
596 avcodec_set_dimensions(s->avctx, s->width, s->height);
598 if (s->picture.data[0])
599 s->avctx->release_buffer(s->avctx, &s->picture);
600 if ((ret = s->avctx->get_buffer(s->avctx, &s->picture)) < 0) {
601 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
604 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
605 if (s->palette_is_set) {
606 memcpy(s->picture.data[1], s->palette, sizeof(s->palette));
608 /* make default grayscale pal */
609 pal = (uint32_t *) s->picture.data[1];
610 for (i = 0; i < 1<<s->bpp; i++)
611 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
617 static int tiff_decode_tag(TiffContext *s)
619 unsigned tag, type, count, off, value = 0;
620 int i, j, k, pos, start;
625 tag = tget_short(&s->gb, s->le);
626 type = tget_short(&s->gb, s->le);
627 count = tget_long(&s->gb, s->le);
628 off = tget_long(&s->gb, s->le);
629 start = bytestream2_tell(&s->gb);
631 if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) {
632 av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n",
641 bytestream2_seek(&s->gb, -4, SEEK_CUR);
642 value = tget(&s->gb, type, s->le);
649 bytestream2_seek(&s->gb, -4, SEEK_CUR);
654 bytestream2_seek(&s->gb, off, SEEK_SET);
657 if (count <= 4 && type_sizes[type] * count <= 4) {
658 bytestream2_seek(&s->gb, -4, SEEK_CUR);
660 bytestream2_seek(&s->gb, off, SEEK_SET);
674 av_log(s->avctx, AV_LOG_ERROR,
675 "This format is not supported (bpp=%d, %d components)\n",
684 s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) +
685 ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
690 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
692 for (i = 0; i < count; i++)
693 s->bpp += tget(&s->gb, type, s->le);
700 case TIFF_SAMPLES_PER_PIXEL:
702 av_log(s->avctx, AV_LOG_ERROR,
703 "Samples per pixel requires a single value, many provided\n");
704 return AVERROR_INVALIDDATA;
706 if (s->bppcount == 1)
724 case TIFF_ADOBE_DEFLATE:
728 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
733 av_log(s->avctx, AV_LOG_ERROR,
734 "JPEG compression is not supported\n");
737 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
742 case TIFF_ROWSPERSTRIP:
743 if (type == TIFF_LONG && value == UINT_MAX)
744 value = s->avctx->height;
746 av_log(s->avctx, AV_LOG_ERROR,
747 "Incorrect value of rows per strip\n");
752 case TIFF_STRIP_OFFS:
762 if (s->strippos > bytestream2_size(&s->gb)) {
763 av_log(s->avctx, AV_LOG_ERROR,
764 "Tag referencing position outside the image\n");
768 case TIFF_STRIP_SIZE:
770 s->stripsizesoff = 0;
771 s->stripsize = value;
774 s->stripsizesoff = off;
778 if (s->stripsizesoff > bytestream2_size(&s->gb)) {
779 av_log(s->avctx, AV_LOG_ERROR,
780 "Tag referencing position outside the image\n");
784 case TIFF_TILE_BYTE_COUNTS:
785 case TIFF_TILE_LENGTH:
786 case TIFF_TILE_OFFSETS:
787 case TIFF_TILE_WIDTH:
788 av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
789 return AVERROR_PATCHWELCOME;
792 s->predictor = value;
806 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
811 case TIFF_FILL_ORDER:
812 if (value < 1 || value > 2) {
813 av_log(s->avctx, AV_LOG_ERROR,
814 "Unknown FillOrder value %d, trying default one\n", value);
817 s->fill_order = value - 1;
820 pal = (uint32_t *) s->palette;
821 off = type_sizes[type];
822 if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
824 off = (type_sizes[type] - 1) << 3;
825 for (k = 2; k >= 0; k--) {
826 for (i = 0; i < count / 3; i++) {
828 pal[i] = 0xFFU << 24;
829 j = (tget(&s->gb, type, s->le) >> off) << (k * 8);
833 s->palette_is_set = 1;
837 av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
842 if (s->compr == TIFF_G3)
846 if (s->compr == TIFF_G4)
849 #define ADD_METADATA(count, name, sep)\
850 if (ret = add_metadata(count, type, name, sep, s) < 0) {\
851 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
854 case TIFF_MODEL_PIXEL_SCALE:
855 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
857 case TIFF_MODEL_TRANSFORMATION:
858 ADD_METADATA(count, "ModelTransformationTag", NULL);
860 case TIFF_MODEL_TIEPOINT:
861 ADD_METADATA(count, "ModelTiepointTag", NULL);
863 case TIFF_GEO_KEY_DIRECTORY:
864 ADD_METADATA(1, "GeoTIFF_Version", NULL);
865 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
866 s->geotag_count = tget_short(&s->gb, s->le);
867 if (s->geotag_count > count / 4 - 1) {
868 s->geotag_count = count / 4 - 1;
869 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
871 if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4)
873 s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
875 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
876 return AVERROR(ENOMEM);
878 for (i = 0; i < s->geotag_count; i++) {
879 s->geotags[i].key = tget_short(&s->gb, s->le);
880 s->geotags[i].type = tget_short(&s->gb, s->le);
881 s->geotags[i].count = tget_short(&s->gb, s->le);
883 if (!s->geotags[i].type)
884 s->geotags[i].val = get_geokey_val(s->geotags[i].key, tget_short(&s->gb, s->le));
886 s->geotags[i].offset = tget_short(&s->gb, s->le);
889 case TIFF_GEO_DOUBLE_PARAMS:
890 if (count >= INT_MAX / sizeof(int64_t))
891 return AVERROR_INVALIDDATA;
892 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
893 return AVERROR_INVALIDDATA;
894 dp = av_malloc(count * sizeof(double));
896 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
897 return AVERROR(ENOMEM);
899 for (i = 0; i < count; i++)
900 dp[i] = tget_double(&s->gb, s->le);
901 for (i = 0; i < s->geotag_count; i++) {
902 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
903 if (s->geotags[i].count == 0
904 || s->geotags[i].offset + s->geotags[i].count > count) {
905 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
907 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
909 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
911 return AVERROR(ENOMEM);
913 s->geotags[i].val = ap;
919 case TIFF_GEO_ASCII_PARAMS:
920 pos = bytestream2_tell(&s->gb);
921 for (i = 0; i < s->geotag_count; i++) {
922 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
923 if (s->geotags[i].count == 0
924 || s->geotags[i].offset + s->geotags[i].count > count) {
925 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
929 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
930 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
932 ap = av_malloc(s->geotags[i].count);
934 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
935 return AVERROR(ENOMEM);
937 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
938 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
939 s->geotags[i].val = ap;
945 ADD_METADATA(count, "artist", NULL);
948 ADD_METADATA(count, "copyright", NULL);
951 ADD_METADATA(count, "date", NULL);
953 case TIFF_DOCUMENT_NAME:
954 ADD_METADATA(count, "document_name", NULL);
956 case TIFF_HOST_COMPUTER:
957 ADD_METADATA(count, "computer", NULL);
959 case TIFF_IMAGE_DESCRIPTION:
960 ADD_METADATA(count, "description", NULL);
963 ADD_METADATA(count, "make", NULL);
966 ADD_METADATA(count, "model", NULL);
969 ADD_METADATA(count, "page_name", NULL);
971 case TIFF_PAGE_NUMBER:
972 ADD_METADATA(count, "page_number", " / ");
974 case TIFF_SOFTWARE_NAME:
975 ADD_METADATA(count, "software", NULL);
978 av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n",
981 bytestream2_seek(&s->gb, start, SEEK_SET);
985 static int decode_frame(AVCodecContext *avctx,
986 void *data, int *data_size, AVPacket *avpkt)
988 TiffContext *const s = avctx->priv_data;
989 AVFrame *picture = data;
990 AVFrame *const p = &s->picture;
995 unsigned soff, ssize;
997 GetByteContext stripsizes;
998 GetByteContext stripdata;
1000 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1002 //parse image header
1003 if (avpkt->size < 8)
1004 return AVERROR_INVALIDDATA;
1005 id = bytestream2_get_le16u(&s->gb);
1008 else if (id == 0x4D4D)
1011 av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
1015 // TIFF_BPP is not a required tag and defaults to 1
1016 s->bppcount = s->bpp = 1;
1018 s->compr = TIFF_RAW;
1021 /* metadata has been destroyed from lavc internals, that pointer is not
1023 s->picture.metadata = NULL;
1025 // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
1026 // that further identifies the file as a TIFF file"
1027 if (tget_short(&s->gb, le) != 42) {
1028 av_log(avctx, AV_LOG_ERROR,
1029 "The answer to life, universe and everything is not correct!\n");
1032 // Reset these offsets so we can tell if they were set this frame
1033 s->stripsizesoff = s->strippos = 0;
1034 /* parse image file directory */
1035 off = tget_long(&s->gb, le);
1036 if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
1037 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
1038 return AVERROR_INVALIDDATA;
1040 bytestream2_seek(&s->gb, off, SEEK_SET);
1041 entries = tget_short(&s->gb, le);
1042 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
1043 return AVERROR_INVALIDDATA;
1044 for (i = 0; i < entries; i++) {
1045 if (tiff_decode_tag(s) < 0)
1049 for (i = 0; i<s->geotag_count; i++) {
1050 const char *keyname = get_geokey_name(s->geotags[i].key);
1052 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
1055 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
1056 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
1059 ret = av_dict_set(&s->picture.metadata, keyname, s->geotags[i].val, 0);
1061 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
1066 if (!s->strippos && !s->stripoff) {
1067 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
1070 /* now we have the data and may start decoding */
1071 if ((ret = init_image(s)) < 0)
1074 if (s->strips == 1 && !s->stripsize) {
1075 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
1076 s->stripsize = avpkt->size - s->stripoff;
1078 stride = p->linesize[0];
1081 if (s->stripsizesoff) {
1082 if (s->stripsizesoff >= (unsigned)avpkt->size)
1083 return AVERROR_INVALIDDATA;
1084 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
1087 if (s->strippos >= (unsigned)avpkt->size)
1088 return AVERROR_INVALIDDATA;
1089 bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
1093 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1094 return AVERROR_INVALIDDATA;
1097 for (i = 0; i < s->height; i += s->rps) {
1098 if (s->stripsizesoff)
1099 ssize = tget(&stripsizes, s->sstype, s->le);
1101 ssize = s->stripsize;
1104 soff = tget(&stripdata, s->sot, s->le);
1108 if (soff > avpkt->size || ssize > avpkt->size - soff) {
1109 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1112 if (tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize,
1113 FFMIN(s->rps, s->height - i)) < 0)
1115 dst += s->rps * stride;
1117 if (s->predictor == 2) {
1120 ssize = s->width * soff;
1121 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
1122 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE) {
1123 for (i = 0; i < s->height; i++) {
1124 for (j = soff; j < ssize; j += 2)
1125 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
1128 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
1129 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
1130 for (i = 0; i < s->height; i++) {
1131 for (j = soff; j < ssize; j += 2)
1132 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
1136 for (i = 0; i < s->height; i++) {
1137 for (j = soff; j < ssize; j++)
1138 dst[j] += dst[j - soff];
1145 dst = s->picture.data[0];
1146 for (i = 0; i < s->height; i++) {
1147 for (j = 0; j < s->picture.linesize[0]; j++)
1148 dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
1149 dst += s->picture.linesize[0];
1152 *picture = s->picture;
1153 *data_size = sizeof(AVPicture);
1158 static av_cold int tiff_init(AVCodecContext *avctx)
1160 TiffContext *s = avctx->priv_data;
1165 avcodec_get_frame_defaults(&s->picture);
1166 avctx->coded_frame = &s->picture;
1167 ff_lzw_decode_open(&s->lzw);
1168 ff_ccitt_unpack_init();
1173 static av_cold int tiff_end(AVCodecContext *avctx)
1175 TiffContext *const s = avctx->priv_data;
1179 ff_lzw_decode_close(&s->lzw);
1180 if (s->picture.data[0])
1181 avctx->release_buffer(avctx, &s->picture);
1185 AVCodec ff_tiff_decoder = {
1187 .type = AVMEDIA_TYPE_VIDEO,
1188 .id = AV_CODEC_ID_TIFF,
1189 .priv_data_size = sizeof(TiffContext),
1192 .decode = decode_frame,
1193 .capabilities = CODEC_CAP_DR1,
1194 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),