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
32 #include "libavutil/attributes.h"
33 #include "libavutil/avstring.h"
34 #include "libavutil/intreadwrite.h"
35 #include "libavutil/imgutils.h"
37 #include "bytestream.h"
43 #include "tiff_data.h"
46 typedef struct TiffContext {
47 AVCodecContext *avctx;
51 unsigned int bpp, bppcount;
52 uint32_t palette[256];
62 int strips, rps, sstype;
64 int stripsizesoff, stripsize, stripoff, strippos;
67 uint8_t *deinvert_buf;
68 int deinvert_buf_size;
74 static void free_geotags(TiffContext *const s)
77 for (i = 0; i < s->geotag_count; i++) {
78 if (s->geotags[i].val)
79 av_freep(&s->geotags[i].val);
81 av_freep(&s->geotags);
85 #define RET_GEOKEY(TYPE, array, element)\
86 if (key >= TIFF_##TYPE##_KEY_ID_OFFSET &&\
87 key - TIFF_##TYPE##_KEY_ID_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_name_type_map))\
88 return ff_tiff_##array##_name_type_map[key - TIFF_##TYPE##_KEY_ID_OFFSET].element;
90 static const char *get_geokey_name(int key)
92 RET_GEOKEY(VERT, vert, name);
93 RET_GEOKEY(PROJ, proj, name);
94 RET_GEOKEY(GEOG, geog, name);
95 RET_GEOKEY(CONF, conf, name);
100 static int get_geokey_type(int key)
102 RET_GEOKEY(VERT, vert, type);
103 RET_GEOKEY(PROJ, proj, type);
104 RET_GEOKEY(GEOG, geog, type);
105 RET_GEOKEY(CONF, conf, type);
107 return AVERROR_INVALIDDATA;
110 static int cmp_id_key(const void *id, const void *k)
112 return *(const int*)id - ((const TiffGeoTagKeyName*)k)->key;
115 static const char *search_keyval(const TiffGeoTagKeyName *keys, int n, int id)
117 TiffGeoTagKeyName *r = bsearch(&id, keys, n, sizeof(keys[0]), cmp_id_key);
124 static char *get_geokey_val(int key, int val)
128 if (val == TIFF_GEO_KEY_UNDEFINED)
129 return av_strdup("undefined");
130 if (val == TIFF_GEO_KEY_USER_DEFINED)
131 return av_strdup("User-Defined");
133 #define RET_GEOKEY_VAL(TYPE, array)\
134 if (val >= TIFF_##TYPE##_OFFSET &&\
135 val - TIFF_##TYPE##_OFFSET < FF_ARRAY_ELEMS(ff_tiff_##array##_codes))\
136 return av_strdup(ff_tiff_##array##_codes[val - TIFF_##TYPE##_OFFSET]);
139 case TIFF_GT_MODEL_TYPE_GEOKEY:
140 RET_GEOKEY_VAL(GT_MODEL_TYPE, gt_model_type);
142 case TIFF_GT_RASTER_TYPE_GEOKEY:
143 RET_GEOKEY_VAL(GT_RASTER_TYPE, gt_raster_type);
145 case TIFF_GEOG_LINEAR_UNITS_GEOKEY:
146 case TIFF_PROJ_LINEAR_UNITS_GEOKEY:
147 case TIFF_VERTICAL_UNITS_GEOKEY:
148 RET_GEOKEY_VAL(LINEAR_UNIT, linear_unit);
150 case TIFF_GEOG_ANGULAR_UNITS_GEOKEY:
151 case TIFF_GEOG_AZIMUTH_UNITS_GEOKEY:
152 RET_GEOKEY_VAL(ANGULAR_UNIT, angular_unit);
154 case TIFF_GEOGRAPHIC_TYPE_GEOKEY:
155 RET_GEOKEY_VAL(GCS_TYPE, gcs_type);
156 RET_GEOKEY_VAL(GCSE_TYPE, gcse_type);
158 case TIFF_GEOG_GEODETIC_DATUM_GEOKEY:
159 RET_GEOKEY_VAL(GEODETIC_DATUM, geodetic_datum);
160 RET_GEOKEY_VAL(GEODETIC_DATUM_E, geodetic_datum_e);
162 case TIFF_GEOG_ELLIPSOID_GEOKEY:
163 RET_GEOKEY_VAL(ELLIPSOID, ellipsoid);
165 case TIFF_GEOG_PRIME_MERIDIAN_GEOKEY:
166 RET_GEOKEY_VAL(PRIME_MERIDIAN, prime_meridian);
168 case TIFF_PROJECTED_CS_TYPE_GEOKEY:
169 ap = av_strdup(search_keyval(ff_tiff_proj_cs_type_codes, FF_ARRAY_ELEMS(ff_tiff_proj_cs_type_codes), val));
172 case TIFF_PROJECTION_GEOKEY:
173 ap = av_strdup(search_keyval(ff_tiff_projection_codes, FF_ARRAY_ELEMS(ff_tiff_projection_codes), val));
176 case TIFF_PROJ_COORD_TRANS_GEOKEY:
177 RET_GEOKEY_VAL(COORD_TRANS, coord_trans);
179 case TIFF_VERTICAL_CS_TYPE_GEOKEY:
180 RET_GEOKEY_VAL(VERT_CS, vert_cs);
181 RET_GEOKEY_VAL(ORTHO_VERT_CS, ortho_vert_cs);
188 snprintf(ap, 14, "Unknown-%d", val);
192 static char *doubles2str(double *dp, int count, const char *sep)
196 uint64_t component_len;
197 if (!sep) sep = ", ";
198 component_len = 15LL + strlen(sep);
199 if (count >= (INT_MAX - 1)/component_len)
201 ap = av_malloc(component_len * count + 1);
206 for (i = 0; i < count; i++) {
207 unsigned l = snprintf(ap, component_len, "%f%s", dp[i], sep);
208 if(l >= component_len) {
214 ap0[strlen(ap0) - strlen(sep)] = '\0';
218 static int add_metadata(int count, int type,
219 const char *name, const char *sep, TiffContext *s, AVFrame *frame)
222 case TIFF_DOUBLE: return ff_tadd_doubles_metadata(count, name, sep, &s->gb, s->le, avpriv_frame_get_metadatap(frame));
223 case TIFF_SHORT : return ff_tadd_shorts_metadata(count, name, sep, &s->gb, s->le, avpriv_frame_get_metadatap(frame));
224 case TIFF_STRING: return ff_tadd_string_metadata(count, name, &s->gb, s->le, avpriv_frame_get_metadatap(frame));
225 default : return AVERROR_INVALIDDATA;
229 static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
230 int usePtr, const uint8_t *src,
231 uint8_t c, int width, int offset)
235 while (--width >= 0) {
236 dst[(width+offset)*8+7] = (usePtr ? src[width] : c) & 0x1;
237 dst[(width+offset)*8+6] = (usePtr ? src[width] : c) >> 1 & 0x1;
238 dst[(width+offset)*8+5] = (usePtr ? src[width] : c) >> 2 & 0x1;
239 dst[(width+offset)*8+4] = (usePtr ? src[width] : c) >> 3 & 0x1;
240 dst[(width+offset)*8+3] = (usePtr ? src[width] : c) >> 4 & 0x1;
241 dst[(width+offset)*8+2] = (usePtr ? src[width] : c) >> 5 & 0x1;
242 dst[(width+offset)*8+1] = (usePtr ? src[width] : c) >> 6 & 0x1;
243 dst[(width+offset)*8+0] = (usePtr ? src[width] : c) >> 7;
247 while (--width >= 0) {
248 dst[(width+offset)*4+3] = (usePtr ? src[width] : c) & 0x3;
249 dst[(width+offset)*4+2] = (usePtr ? src[width] : c) >> 2 & 0x3;
250 dst[(width+offset)*4+1] = (usePtr ? src[width] : c) >> 4 & 0x3;
251 dst[(width+offset)*4+0] = (usePtr ? src[width] : c) >> 6;
255 while (--width >= 0) {
256 dst[(width+offset)*2+1] = (usePtr ? src[width] : c) & 0xF;
257 dst[(width+offset)*2+0] = (usePtr ? src[width] : c) >> 4;
262 memcpy(dst + offset, src, width);
264 memset(dst + offset, c, width);
269 static int deinvert_buffer(TiffContext *s, const uint8_t *src, int size)
273 av_fast_padded_malloc(&s->deinvert_buf, &s->deinvert_buf_size, size);
274 if (!s->deinvert_buf)
275 return AVERROR(ENOMEM);
276 for (i = 0; i < size; i++)
277 s->deinvert_buf[i] = ff_reverse[src[i]];
283 static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
286 z_stream zstream = { 0 };
289 zstream.next_in = (uint8_t *)src;
290 zstream.avail_in = size;
291 zstream.next_out = dst;
292 zstream.avail_out = *len;
293 zret = inflateInit(&zstream);
295 av_log(NULL, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
298 zret = inflate(&zstream, Z_SYNC_FLUSH);
299 inflateEnd(&zstream);
300 *len = zstream.total_out;
301 return zret == Z_STREAM_END ? Z_OK : zret;
304 static int tiff_unpack_zlib(TiffContext *s, uint8_t *dst, int stride,
305 const uint8_t *src, int size,
306 int width, int lines)
309 unsigned long outlen;
311 outlen = width * lines;
312 zbuf = av_malloc(outlen);
314 return AVERROR(ENOMEM);
316 if ((ret = deinvert_buffer(s, src, size)) < 0) {
320 src = s->deinvert_buf;
322 ret = tiff_uncompress(zbuf, &outlen, src, size);
324 av_log(s->avctx, AV_LOG_ERROR,
325 "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
326 (unsigned long)width * lines, ret);
328 return AVERROR_UNKNOWN;
331 for (line = 0; line < lines; line++) {
332 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
333 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
335 memcpy(dst, src, width);
346 static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
347 const uint8_t *src, int size, int width, int lines)
351 uint8_t *src2 = av_malloc((unsigned)size +
352 FF_INPUT_BUFFER_PADDING_SIZE);
355 av_log(s->avctx, AV_LOG_ERROR,
356 "Error allocating temporary buffer\n");
357 return AVERROR(ENOMEM);
359 if (s->fax_opts & 2) {
360 avpriv_request_sample(s->avctx, "Uncompressed fax mode");
362 return AVERROR_PATCHWELCOME;
364 if (!s->fill_order) {
365 memcpy(src2, src, size);
367 for (i = 0; i < size; i++)
368 src2[i] = ff_reverse[src[i]];
370 memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
371 ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
372 s->compr, s->fax_opts);
373 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
374 for (line = 0; line < lines; line++) {
375 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
382 static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
383 const uint8_t *src, int size, int lines)
385 int c, line, pixels, code, ret;
386 const uint8_t *ssrc = src;
387 int width = ((s->width * s->bpp) + 7) >> 3;
390 width /= s->bppcount;
393 return AVERROR_INVALIDDATA;
395 if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
397 return tiff_unpack_zlib(s, dst, stride, src, size, width, lines);
399 av_log(s->avctx, AV_LOG_ERROR,
400 "zlib support not enabled, "
401 "deflate compression not supported\n");
402 return AVERROR(ENOSYS);
405 if (s->compr == TIFF_LZW) {
407 if ((ret = deinvert_buffer(s, src, size)) < 0)
409 ssrc = src = s->deinvert_buf;
411 if (size > 1 && !src[0] && (src[1]&1)) {
412 av_log(s->avctx, AV_LOG_ERROR, "Old style LZW is unsupported\n");
414 if ((ret = ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF)) < 0) {
415 av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
419 if (s->compr == TIFF_CCITT_RLE ||
420 s->compr == TIFF_G3 ||
421 s->compr == TIFF_G4) {
422 return tiff_unpack_fax(s, dst, stride, src, size, width, lines);
424 for (line = 0; line < lines; line++) {
425 if (src - ssrc > size) {
426 av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
427 return AVERROR_INVALIDDATA;
431 if (ssrc + size - src < width)
432 return AVERROR_INVALIDDATA;
433 if (!s->fill_order) {
434 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
435 dst, 1, src, 0, width, 0);
438 for (i = 0; i < width; i++)
439 dst[i] = ff_reverse[src[i]];
444 for (pixels = 0; pixels < width;) {
445 if (ssrc + size - src < 2) {
446 av_log(s->avctx, AV_LOG_ERROR, "Read went out of bounds\n");
447 return AVERROR_INVALIDDATA;
449 code = s->fill_order ? (int8_t) ff_reverse[*src++]: (int8_t) *src++;
452 if (pixels + code > width ||
453 ssrc + size - src < code) {
454 av_log(s->avctx, AV_LOG_ERROR,
455 "Copy went out of bounds\n");
456 return AVERROR_INVALIDDATA;
458 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
459 dst, 1, src, 0, code, pixels);
462 } else if (code != -128) { // -127..-1
464 if (pixels + code > width) {
465 av_log(s->avctx, AV_LOG_ERROR,
466 "Run went out of bounds\n");
467 return AVERROR_INVALIDDATA;
470 horizontal_fill(s->bpp * (s->avctx->pix_fmt == AV_PIX_FMT_PAL8),
471 dst, 0, NULL, c, code, pixels);
477 for (i = 0; i < width; i++)
478 dst[i] = ff_reverse[dst[i]];
482 pixels = ff_lzw_decode(s->lzw, dst, width);
483 if (pixels < width) {
484 av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
486 return AVERROR_INVALIDDATA;
488 if (s->bpp < 8 && s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
489 horizontal_fill(s->bpp, dst, 1, dst, 0, width, 0);
497 static int init_image(TiffContext *s, ThreadFrame *frame)
502 switch (s->planar * 1000 + s->bpp * 10 + s->bppcount) {
504 if (!s->palette_is_set) {
505 s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
511 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
514 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
517 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
520 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
523 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
526 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
529 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
532 s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
535 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
538 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
541 s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
544 av_log(s->avctx, AV_LOG_ERROR,
545 "This format is not supported (bpp=%d, bppcount=%d)\n",
546 s->bpp, s->bppcount);
547 return AVERROR_INVALIDDATA;
549 if (s->width != s->avctx->width || s->height != s->avctx->height) {
550 ret = ff_set_dimensions(s->avctx, s->width, s->height);
554 if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
556 if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
557 if (s->palette_is_set) {
558 memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
560 /* make default grayscale pal */
561 pal = (uint32_t *) frame->f->data[1];
562 for (i = 0; i < 1<<s->bpp; i++)
563 pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
569 static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
571 unsigned tag, type, count, off, value = 0;
572 int i, j, k, pos, start;
577 ret = ff_tread_tag(&s->gb, s->le, &tag, &type, &count, &start);
582 off = bytestream2_tell(&s->gb);
588 value = ff_tget(&s->gb, type, s->le);
609 av_log(s->avctx, AV_LOG_ERROR,
610 "This format is not supported (bpp=%d, %d components)\n",
612 return AVERROR_INVALIDDATA;
622 if (bytestream2_get_bytes_left(&s->gb) < type_sizes[type] * count)
623 return AVERROR_INVALIDDATA;
624 for (i = 0; i < count; i++)
625 s->bpp += ff_tget(&s->gb, type, s->le);
632 case TIFF_SAMPLES_PER_PIXEL:
634 av_log(s->avctx, AV_LOG_ERROR,
635 "Samples per pixel requires a single value, many provided\n");
636 return AVERROR_INVALIDDATA;
639 av_log(s->avctx, AV_LOG_ERROR,
640 "Samples per pixel %d is too large\n", value);
641 return AVERROR_INVALIDDATA;
643 if (s->bppcount == 1)
661 case TIFF_ADOBE_DEFLATE:
665 av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
666 return AVERROR(ENOSYS);
670 avpriv_report_missing_feature(s->avctx, "JPEG compression");
671 return AVERROR_PATCHWELCOME;
673 av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
675 return AVERROR_INVALIDDATA;
678 case TIFF_ROWSPERSTRIP:
679 if (type == TIFF_LONG && value == UINT_MAX)
682 av_log(s->avctx, AV_LOG_ERROR,
683 "Incorrect value of rows per strip\n");
684 return AVERROR_INVALIDDATA;
688 case TIFF_STRIP_OFFS:
698 if (s->strippos > bytestream2_size(&s->gb)) {
699 av_log(s->avctx, AV_LOG_ERROR,
700 "Tag referencing position outside the image\n");
701 return AVERROR_INVALIDDATA;
704 case TIFF_STRIP_SIZE:
706 s->stripsizesoff = 0;
707 s->stripsize = value;
710 s->stripsizesoff = off;
714 if (s->stripsizesoff > bytestream2_size(&s->gb)) {
715 av_log(s->avctx, AV_LOG_ERROR,
716 "Tag referencing position outside the image\n");
717 return AVERROR_INVALIDDATA;
720 case TIFF_TILE_BYTE_COUNTS:
721 case TIFF_TILE_LENGTH:
722 case TIFF_TILE_OFFSETS:
723 case TIFF_TILE_WIDTH:
724 av_log(s->avctx, AV_LOG_ERROR, "Tiled images are not supported\n");
725 return AVERROR_PATCHWELCOME;
728 s->predictor = value;
742 av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
744 return AVERROR_INVALIDDATA;
747 case TIFF_FILL_ORDER:
748 if (value < 1 || value > 2) {
749 av_log(s->avctx, AV_LOG_ERROR,
750 "Unknown FillOrder value %d, trying default one\n", value);
753 s->fill_order = value - 1;
756 pal = (uint32_t *) s->palette;
757 off = type_sizes[type];
758 if (count / 3 > 256 || bytestream2_get_bytes_left(&s->gb) < count / 3 * off * 3)
759 return AVERROR_INVALIDDATA;
760 off = (type_sizes[type] - 1) << 3;
761 for (k = 2; k >= 0; k--) {
762 for (i = 0; i < count / 3; i++) {
764 pal[i] = 0xFFU << 24;
765 j = (ff_tget(&s->gb, type, s->le) >> off) << (k * 8);
769 s->palette_is_set = 1;
772 s->planar = value == 2;
775 if (s->compr == TIFF_G3)
779 if (s->compr == TIFF_G4)
782 #define ADD_METADATA(count, name, sep)\
783 if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\
784 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");\
787 case TIFF_MODEL_PIXEL_SCALE:
788 ADD_METADATA(count, "ModelPixelScaleTag", NULL);
790 case TIFF_MODEL_TRANSFORMATION:
791 ADD_METADATA(count, "ModelTransformationTag", NULL);
793 case TIFF_MODEL_TIEPOINT:
794 ADD_METADATA(count, "ModelTiepointTag", NULL);
796 case TIFF_GEO_KEY_DIRECTORY:
797 ADD_METADATA(1, "GeoTIFF_Version", NULL);
798 ADD_METADATA(2, "GeoTIFF_Key_Revision", ".");
799 s->geotag_count = ff_tget_short(&s->gb, s->le);
800 if (s->geotag_count > count / 4 - 1) {
801 s->geotag_count = count / 4 - 1;
802 av_log(s->avctx, AV_LOG_WARNING, "GeoTIFF key directory buffer shorter than specified\n");
804 if (bytestream2_get_bytes_left(&s->gb) < s->geotag_count * sizeof(int16_t) * 4) {
808 s->geotags = av_mallocz(sizeof(TiffGeoTag) * s->geotag_count);
810 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
814 for (i = 0; i < s->geotag_count; i++) {
815 s->geotags[i].key = ff_tget_short(&s->gb, s->le);
816 s->geotags[i].type = ff_tget_short(&s->gb, s->le);
817 s->geotags[i].count = ff_tget_short(&s->gb, s->le);
819 if (!s->geotags[i].type)
820 s->geotags[i].val = get_geokey_val(s->geotags[i].key, ff_tget_short(&s->gb, s->le));
822 s->geotags[i].offset = ff_tget_short(&s->gb, s->le);
825 case TIFF_GEO_DOUBLE_PARAMS:
826 if (count >= INT_MAX / sizeof(int64_t))
827 return AVERROR_INVALIDDATA;
828 if (bytestream2_get_bytes_left(&s->gb) < count * sizeof(int64_t))
829 return AVERROR_INVALIDDATA;
830 dp = av_malloc(count * sizeof(double));
832 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
835 for (i = 0; i < count; i++)
836 dp[i] = ff_tget_double(&s->gb, s->le);
837 for (i = 0; i < s->geotag_count; i++) {
838 if (s->geotags[i].type == TIFF_GEO_DOUBLE_PARAMS) {
839 if (s->geotags[i].count == 0
840 || s->geotags[i].offset + s->geotags[i].count > count) {
841 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
843 char *ap = doubles2str(&dp[s->geotags[i].offset], s->geotags[i].count, ", ");
845 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
847 return AVERROR(ENOMEM);
849 s->geotags[i].val = ap;
855 case TIFF_GEO_ASCII_PARAMS:
856 pos = bytestream2_tell(&s->gb);
857 for (i = 0; i < s->geotag_count; i++) {
858 if (s->geotags[i].type == TIFF_GEO_ASCII_PARAMS) {
859 if (s->geotags[i].count == 0
860 || s->geotags[i].offset + s->geotags[i].count > count) {
861 av_log(s->avctx, AV_LOG_WARNING, "Invalid GeoTIFF key %d\n", s->geotags[i].key);
865 bytestream2_seek(&s->gb, pos + s->geotags[i].offset, SEEK_SET);
866 if (bytestream2_get_bytes_left(&s->gb) < s->geotags[i].count)
867 return AVERROR_INVALIDDATA;
868 ap = av_malloc(s->geotags[i].count);
870 av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
871 return AVERROR(ENOMEM);
873 bytestream2_get_bufferu(&s->gb, ap, s->geotags[i].count);
874 ap[s->geotags[i].count - 1] = '\0'; //replace the "|" delimiter with a 0 byte
875 s->geotags[i].val = ap;
881 ADD_METADATA(count, "artist", NULL);
884 ADD_METADATA(count, "copyright", NULL);
887 ADD_METADATA(count, "date", NULL);
889 case TIFF_DOCUMENT_NAME:
890 ADD_METADATA(count, "document_name", NULL);
892 case TIFF_HOST_COMPUTER:
893 ADD_METADATA(count, "computer", NULL);
895 case TIFF_IMAGE_DESCRIPTION:
896 ADD_METADATA(count, "description", NULL);
899 ADD_METADATA(count, "make", NULL);
902 ADD_METADATA(count, "model", NULL);
905 ADD_METADATA(count, "page_name", NULL);
907 case TIFF_PAGE_NUMBER:
908 ADD_METADATA(count, "page_number", " / ");
910 case TIFF_SOFTWARE_NAME:
911 ADD_METADATA(count, "software", NULL);
914 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
915 av_log(s->avctx, AV_LOG_ERROR,
916 "Unknown or unsupported tag %d/0X%0X\n",
918 return AVERROR_INVALIDDATA;
922 bytestream2_seek(&s->gb, start, SEEK_SET);
926 static int decode_frame(AVCodecContext *avctx,
927 void *data, int *got_frame, AVPacket *avpkt)
929 TiffContext *const s = avctx->priv_data;
930 AVFrame *const p = data;
931 ThreadFrame frame = { .f = data };
933 int le, ret, plane, planes;
934 int i, j, entries, stride;
935 unsigned soff, ssize;
937 GetByteContext stripsizes;
938 GetByteContext stripdata;
940 bytestream2_init(&s->gb, avpkt->data, avpkt->size);
942 // parse image header
943 if ((ret = ff_tdecode_header(&s->gb, &le, &off))) {
944 av_log(avctx, AV_LOG_ERROR, "Invalid TIFF header\n");
946 } else if (off >= UINT_MAX - 14 || avpkt->size < off + 14) {
947 av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
948 return AVERROR_INVALIDDATA;
951 // TIFF_BPP is not a required tag and defaults to 1
952 s->bppcount = s->bpp = 1;
958 // Reset these offsets so we can tell if they were set this frame
959 s->stripsizesoff = s->strippos = 0;
960 /* parse image file directory */
961 bytestream2_seek(&s->gb, off, SEEK_SET);
962 entries = ff_tget_short(&s->gb, le);
963 if (bytestream2_get_bytes_left(&s->gb) < entries * 12)
964 return AVERROR_INVALIDDATA;
965 for (i = 0; i < entries; i++) {
966 if ((ret = tiff_decode_tag(s, p)) < 0)
970 for (i = 0; i<s->geotag_count; i++) {
971 const char *keyname = get_geokey_name(s->geotags[i].key);
973 av_log(avctx, AV_LOG_WARNING, "Unknown or unsupported GeoTIFF key %d\n", s->geotags[i].key);
976 if (get_geokey_type(s->geotags[i].key) != s->geotags[i].type) {
977 av_log(avctx, AV_LOG_WARNING, "Type of GeoTIFF key %d is wrong\n", s->geotags[i].key);
980 ret = av_dict_set(avpriv_frame_get_metadatap(p), keyname, s->geotags[i].val, 0);
982 av_log(avctx, AV_LOG_ERROR, "Writing metadata with key '%s' failed\n", keyname);
987 if (!s->strippos && !s->stripoff) {
988 av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
989 return AVERROR_INVALIDDATA;
991 /* now we have the data and may start decoding */
992 if ((ret = init_image(s, &frame)) < 0)
995 if (s->strips == 1 && !s->stripsize) {
996 av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
997 s->stripsize = avpkt->size - s->stripoff;
1000 if (s->stripsizesoff) {
1001 if (s->stripsizesoff >= (unsigned)avpkt->size)
1002 return AVERROR_INVALIDDATA;
1003 bytestream2_init(&stripsizes, avpkt->data + s->stripsizesoff, avpkt->size - s->stripsizesoff);
1006 if (s->strippos >= (unsigned)avpkt->size)
1007 return AVERROR_INVALIDDATA;
1008 bytestream2_init(&stripdata, avpkt->data + s->strippos, avpkt->size - s->strippos);
1012 av_log(avctx, AV_LOG_ERROR, "rps %d invalid\n", s->rps);
1013 return AVERROR_INVALIDDATA;
1016 planes = s->planar ? s->bppcount : 1;
1017 for (plane = 0; plane < planes; plane++) {
1018 stride = p->linesize[plane];
1019 dst = p->data[plane];
1020 for (i = 0; i < s->height; i += s->rps) {
1021 if (s->stripsizesoff)
1022 ssize = ff_tget(&stripsizes, s->sstype, s->le);
1024 ssize = s->stripsize;
1027 soff = ff_tget(&stripdata, s->sot, s->le);
1031 if (soff > avpkt->size || ssize > avpkt->size - soff) {
1032 av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
1033 return AVERROR_INVALIDDATA;
1035 if ((ret = tiff_unpack_strip(s, dst, stride, avpkt->data + soff, ssize,
1036 FFMIN(s->rps, s->height - i))) < 0) {
1037 if (avctx->err_recognition & AV_EF_EXPLODE)
1041 dst += s->rps * stride;
1043 if (s->predictor == 2) {
1044 dst = p->data[plane];
1047 soff = FFMAX(soff / s->bppcount, 1);
1048 ssize = s->width * soff;
1049 if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48LE ||
1050 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64LE ||
1051 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16LE ||
1052 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16LE) {
1053 for (i = 0; i < s->height; i++) {
1054 for (j = soff; j < ssize; j += 2)
1055 AV_WL16(dst + j, AV_RL16(dst + j) + AV_RL16(dst + j - soff));
1058 } else if (s->avctx->pix_fmt == AV_PIX_FMT_RGB48BE ||
1059 s->avctx->pix_fmt == AV_PIX_FMT_RGBA64BE ||
1060 s->avctx->pix_fmt == AV_PIX_FMT_GBRP16BE ||
1061 s->avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
1062 for (i = 0; i < s->height; i++) {
1063 for (j = soff; j < ssize; j += 2)
1064 AV_WB16(dst + j, AV_RB16(dst + j) + AV_RB16(dst + j - soff));
1068 for (i = 0; i < s->height; i++) {
1069 for (j = soff; j < ssize; j++)
1070 dst[j] += dst[j - soff];
1077 dst = p->data[plane];
1078 for (i = 0; i < s->height; i++) {
1079 for (j = 0; j < p->linesize[plane]; j++)
1080 dst[j] = (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
1081 dst += p->linesize[plane];
1086 if (s->planar && s->bppcount > 2) {
1087 FFSWAP(uint8_t*, p->data[0], p->data[2]);
1088 FFSWAP(int, p->linesize[0], p->linesize[2]);
1089 FFSWAP(uint8_t*, p->data[0], p->data[1]);
1090 FFSWAP(int, p->linesize[0], p->linesize[1]);
1098 static av_cold int tiff_init(AVCodecContext *avctx)
1100 TiffContext *s = avctx->priv_data;
1105 ff_lzw_decode_open(&s->lzw);
1106 ff_ccitt_unpack_init();
1111 static av_cold int tiff_end(AVCodecContext *avctx)
1113 TiffContext *const s = avctx->priv_data;
1117 ff_lzw_decode_close(&s->lzw);
1118 av_freep(&s->deinvert_buf);
1122 AVCodec ff_tiff_decoder = {
1124 .long_name = NULL_IF_CONFIG_SMALL("TIFF image"),
1125 .type = AVMEDIA_TYPE_VIDEO,
1126 .id = AV_CODEC_ID_TIFF,
1127 .priv_data_size = sizeof(TiffContext),
1130 .decode = decode_frame,
1131 .init_thread_copy = ONLY_IF_THREADS_ENABLED(tiff_init),
1132 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,