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2ba45a60 DM |
1 | /* |
2 | * Matroska file demuxer | |
3 | * Copyright (c) 2003-2008 The FFmpeg Project | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /** | |
23 | * @file | |
24 | * Matroska file demuxer | |
25 | * @author Ronald Bultje <rbultje@ronald.bitfreak.net> | |
26 | * @author with a little help from Moritz Bunkus <moritz@bunkus.org> | |
27 | * @author totally reworked by Aurelien Jacobs <aurel@gnuage.org> | |
28 | * @see specs available on the Matroska project page: http://www.matroska.org/ | |
29 | */ | |
30 | ||
31 | #include "config.h" | |
32 | ||
33 | #include <inttypes.h> | |
34 | #include <stdio.h> | |
2ba45a60 DM |
35 | |
36 | #include "libavutil/avstring.h" | |
37 | #include "libavutil/base64.h" | |
38 | #include "libavutil/dict.h" | |
39 | #include "libavutil/intfloat.h" | |
40 | #include "libavutil/intreadwrite.h" | |
41 | #include "libavutil/lzo.h" | |
42 | #include "libavutil/mathematics.h" | |
f6fa7814 | 43 | #include "libavutil/time_internal.h" |
2ba45a60 DM |
44 | |
45 | #include "libavcodec/bytestream.h" | |
46 | #include "libavcodec/flac.h" | |
47 | #include "libavcodec/mpeg4audio.h" | |
48 | ||
49 | #include "avformat.h" | |
50 | #include "avio_internal.h" | |
51 | #include "internal.h" | |
52 | #include "isom.h" | |
53 | #include "matroska.h" | |
54 | #include "oggdec.h" | |
55 | /* For ff_codec_get_id(). */ | |
56 | #include "riff.h" | |
57 | #include "rmsipr.h" | |
58 | ||
f6fa7814 DM |
59 | #if CONFIG_BZLIB |
60 | #include <bzlib.h> | |
61 | #endif | |
62 | #if CONFIG_ZLIB | |
63 | #include <zlib.h> | |
64 | #endif | |
65 | ||
2ba45a60 DM |
66 | typedef enum { |
67 | EBML_NONE, | |
68 | EBML_UINT, | |
69 | EBML_FLOAT, | |
70 | EBML_STR, | |
71 | EBML_UTF8, | |
72 | EBML_BIN, | |
73 | EBML_NEST, | |
74 | EBML_PASS, | |
75 | EBML_STOP, | |
76 | EBML_SINT, | |
77 | EBML_TYPE_COUNT | |
78 | } EbmlType; | |
79 | ||
80 | typedef const struct EbmlSyntax { | |
81 | uint32_t id; | |
82 | EbmlType type; | |
83 | int list_elem_size; | |
84 | int data_offset; | |
85 | union { | |
86 | uint64_t u; | |
87 | double f; | |
88 | const char *s; | |
89 | const struct EbmlSyntax *n; | |
90 | } def; | |
91 | } EbmlSyntax; | |
92 | ||
93 | typedef struct { | |
94 | int nb_elem; | |
95 | void *elem; | |
96 | } EbmlList; | |
97 | ||
98 | typedef struct { | |
99 | int size; | |
100 | uint8_t *data; | |
101 | int64_t pos; | |
102 | } EbmlBin; | |
103 | ||
104 | typedef struct { | |
105 | uint64_t version; | |
106 | uint64_t max_size; | |
107 | uint64_t id_length; | |
108 | char *doctype; | |
109 | uint64_t doctype_version; | |
110 | } Ebml; | |
111 | ||
112 | typedef struct { | |
113 | uint64_t algo; | |
114 | EbmlBin settings; | |
115 | } MatroskaTrackCompression; | |
116 | ||
117 | typedef struct { | |
118 | uint64_t algo; | |
119 | EbmlBin key_id; | |
120 | } MatroskaTrackEncryption; | |
121 | ||
122 | typedef struct { | |
123 | uint64_t scope; | |
124 | uint64_t type; | |
125 | MatroskaTrackCompression compression; | |
126 | MatroskaTrackEncryption encryption; | |
127 | } MatroskaTrackEncoding; | |
128 | ||
129 | typedef struct { | |
130 | double frame_rate; | |
131 | uint64_t display_width; | |
132 | uint64_t display_height; | |
133 | uint64_t pixel_width; | |
134 | uint64_t pixel_height; | |
135 | EbmlBin color_space; | |
136 | uint64_t stereo_mode; | |
137 | uint64_t alpha_mode; | |
138 | } MatroskaTrackVideo; | |
139 | ||
140 | typedef struct { | |
141 | double samplerate; | |
142 | double out_samplerate; | |
143 | uint64_t bitdepth; | |
144 | uint64_t channels; | |
145 | ||
146 | /* real audio header (extracted from extradata) */ | |
147 | int coded_framesize; | |
148 | int sub_packet_h; | |
149 | int frame_size; | |
150 | int sub_packet_size; | |
151 | int sub_packet_cnt; | |
152 | int pkt_cnt; | |
153 | uint64_t buf_timecode; | |
154 | uint8_t *buf; | |
155 | } MatroskaTrackAudio; | |
156 | ||
157 | typedef struct { | |
158 | uint64_t uid; | |
159 | uint64_t type; | |
160 | } MatroskaTrackPlane; | |
161 | ||
162 | typedef struct { | |
163 | EbmlList combine_planes; | |
164 | } MatroskaTrackOperation; | |
165 | ||
166 | typedef struct { | |
167 | uint64_t num; | |
168 | uint64_t uid; | |
169 | uint64_t type; | |
170 | char *name; | |
171 | char *codec_id; | |
172 | EbmlBin codec_priv; | |
173 | char *language; | |
174 | double time_scale; | |
175 | uint64_t default_duration; | |
176 | uint64_t flag_default; | |
177 | uint64_t flag_forced; | |
178 | uint64_t seek_preroll; | |
179 | MatroskaTrackVideo video; | |
180 | MatroskaTrackAudio audio; | |
181 | MatroskaTrackOperation operation; | |
182 | EbmlList encodings; | |
183 | uint64_t codec_delay; | |
184 | ||
185 | AVStream *stream; | |
186 | int64_t end_timecode; | |
187 | int ms_compat; | |
188 | uint64_t max_block_additional_id; | |
189 | } MatroskaTrack; | |
190 | ||
191 | typedef struct { | |
192 | uint64_t uid; | |
193 | char *filename; | |
194 | char *mime; | |
195 | EbmlBin bin; | |
196 | ||
197 | AVStream *stream; | |
198 | } MatroskaAttachment; | |
199 | ||
200 | typedef struct { | |
201 | uint64_t start; | |
202 | uint64_t end; | |
203 | uint64_t uid; | |
204 | char *title; | |
205 | ||
206 | AVChapter *chapter; | |
207 | } MatroskaChapter; | |
208 | ||
209 | typedef struct { | |
210 | uint64_t track; | |
211 | uint64_t pos; | |
212 | } MatroskaIndexPos; | |
213 | ||
214 | typedef struct { | |
215 | uint64_t time; | |
216 | EbmlList pos; | |
217 | } MatroskaIndex; | |
218 | ||
219 | typedef struct { | |
220 | char *name; | |
221 | char *string; | |
222 | char *lang; | |
223 | uint64_t def; | |
224 | EbmlList sub; | |
225 | } MatroskaTag; | |
226 | ||
227 | typedef struct { | |
228 | char *type; | |
229 | uint64_t typevalue; | |
230 | uint64_t trackuid; | |
231 | uint64_t chapteruid; | |
232 | uint64_t attachuid; | |
233 | } MatroskaTagTarget; | |
234 | ||
235 | typedef struct { | |
236 | MatroskaTagTarget target; | |
237 | EbmlList tag; | |
238 | } MatroskaTags; | |
239 | ||
240 | typedef struct { | |
241 | uint64_t id; | |
242 | uint64_t pos; | |
243 | } MatroskaSeekhead; | |
244 | ||
245 | typedef struct { | |
246 | uint64_t start; | |
247 | uint64_t length; | |
248 | } MatroskaLevel; | |
249 | ||
250 | typedef struct { | |
251 | uint64_t timecode; | |
252 | EbmlList blocks; | |
253 | } MatroskaCluster; | |
254 | ||
255 | typedef struct { | |
256 | AVFormatContext *ctx; | |
257 | ||
258 | /* EBML stuff */ | |
259 | int num_levels; | |
260 | MatroskaLevel levels[EBML_MAX_DEPTH]; | |
261 | int level_up; | |
262 | uint32_t current_id; | |
263 | ||
264 | uint64_t time_scale; | |
265 | double duration; | |
266 | char *title; | |
267 | char *muxingapp; | |
268 | EbmlBin date_utc; | |
269 | EbmlList tracks; | |
270 | EbmlList attachments; | |
271 | EbmlList chapters; | |
272 | EbmlList index; | |
273 | EbmlList tags; | |
274 | EbmlList seekhead; | |
275 | ||
276 | /* byte position of the segment inside the stream */ | |
277 | int64_t segment_start; | |
278 | ||
279 | /* the packet queue */ | |
280 | AVPacket **packets; | |
281 | int num_packets; | |
282 | AVPacket *prev_pkt; | |
283 | ||
284 | int done; | |
285 | ||
286 | /* What to skip before effectively reading a packet. */ | |
287 | int skip_to_keyframe; | |
288 | uint64_t skip_to_timecode; | |
289 | ||
290 | /* File has a CUES element, but we defer parsing until it is needed. */ | |
291 | int cues_parsing_deferred; | |
292 | ||
293 | int current_cluster_num_blocks; | |
294 | int64_t current_cluster_pos; | |
295 | MatroskaCluster current_cluster; | |
296 | ||
297 | /* File has SSA subtitles which prevent incremental cluster parsing. */ | |
298 | int contains_ssa; | |
299 | } MatroskaDemuxContext; | |
300 | ||
301 | typedef struct { | |
302 | uint64_t duration; | |
303 | int64_t reference; | |
304 | uint64_t non_simple; | |
305 | EbmlBin bin; | |
306 | uint64_t additional_id; | |
307 | EbmlBin additional; | |
308 | int64_t discard_padding; | |
309 | } MatroskaBlock; | |
310 | ||
311 | static EbmlSyntax ebml_header[] = { | |
312 | { EBML_ID_EBMLREADVERSION, EBML_UINT, 0, offsetof(Ebml, version), { .u = EBML_VERSION } }, | |
313 | { EBML_ID_EBMLMAXSIZELENGTH, EBML_UINT, 0, offsetof(Ebml, max_size), { .u = 8 } }, | |
314 | { EBML_ID_EBMLMAXIDLENGTH, EBML_UINT, 0, offsetof(Ebml, id_length), { .u = 4 } }, | |
315 | { EBML_ID_DOCTYPE, EBML_STR, 0, offsetof(Ebml, doctype), { .s = "(none)" } }, | |
316 | { EBML_ID_DOCTYPEREADVERSION, EBML_UINT, 0, offsetof(Ebml, doctype_version), { .u = 1 } }, | |
317 | { EBML_ID_EBMLVERSION, EBML_NONE }, | |
318 | { EBML_ID_DOCTYPEVERSION, EBML_NONE }, | |
319 | { 0 } | |
320 | }; | |
321 | ||
322 | static EbmlSyntax ebml_syntax[] = { | |
323 | { EBML_ID_HEADER, EBML_NEST, 0, 0, { .n = ebml_header } }, | |
324 | { 0 } | |
325 | }; | |
326 | ||
327 | static EbmlSyntax matroska_info[] = { | |
328 | { MATROSKA_ID_TIMECODESCALE, EBML_UINT, 0, offsetof(MatroskaDemuxContext, time_scale), { .u = 1000000 } }, | |
329 | { MATROSKA_ID_DURATION, EBML_FLOAT, 0, offsetof(MatroskaDemuxContext, duration) }, | |
330 | { MATROSKA_ID_TITLE, EBML_UTF8, 0, offsetof(MatroskaDemuxContext, title) }, | |
331 | { MATROSKA_ID_WRITINGAPP, EBML_NONE }, | |
332 | { MATROSKA_ID_MUXINGAPP, EBML_UTF8, 0, offsetof(MatroskaDemuxContext, muxingapp) }, | |
333 | { MATROSKA_ID_DATEUTC, EBML_BIN, 0, offsetof(MatroskaDemuxContext, date_utc) }, | |
334 | { MATROSKA_ID_SEGMENTUID, EBML_NONE }, | |
335 | { 0 } | |
336 | }; | |
337 | ||
338 | static EbmlSyntax matroska_track_video[] = { | |
339 | { MATROSKA_ID_VIDEOFRAMERATE, EBML_FLOAT, 0, offsetof(MatroskaTrackVideo, frame_rate) }, | |
340 | { MATROSKA_ID_VIDEODISPLAYWIDTH, EBML_UINT, 0, offsetof(MatroskaTrackVideo, display_width), { .u=-1 } }, | |
341 | { MATROSKA_ID_VIDEODISPLAYHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo, display_height), { .u=-1 } }, | |
342 | { MATROSKA_ID_VIDEOPIXELWIDTH, EBML_UINT, 0, offsetof(MatroskaTrackVideo, pixel_width) }, | |
343 | { MATROSKA_ID_VIDEOPIXELHEIGHT, EBML_UINT, 0, offsetof(MatroskaTrackVideo, pixel_height) }, | |
344 | { MATROSKA_ID_VIDEOCOLORSPACE, EBML_BIN, 0, offsetof(MatroskaTrackVideo, color_space) }, | |
345 | { MATROSKA_ID_VIDEOALPHAMODE, EBML_UINT, 0, offsetof(MatroskaTrackVideo, alpha_mode) }, | |
346 | { MATROSKA_ID_VIDEOPIXELCROPB, EBML_NONE }, | |
347 | { MATROSKA_ID_VIDEOPIXELCROPT, EBML_NONE }, | |
348 | { MATROSKA_ID_VIDEOPIXELCROPL, EBML_NONE }, | |
349 | { MATROSKA_ID_VIDEOPIXELCROPR, EBML_NONE }, | |
350 | { MATROSKA_ID_VIDEODISPLAYUNIT, EBML_NONE }, | |
351 | { MATROSKA_ID_VIDEOFLAGINTERLACED, EBML_NONE }, | |
352 | { MATROSKA_ID_VIDEOSTEREOMODE, EBML_UINT, 0, offsetof(MatroskaTrackVideo, stereo_mode), { .u = MATROSKA_VIDEO_STEREOMODE_TYPE_NB } }, | |
353 | { MATROSKA_ID_VIDEOASPECTRATIO, EBML_NONE }, | |
354 | { 0 } | |
355 | }; | |
356 | ||
357 | static EbmlSyntax matroska_track_audio[] = { | |
358 | { MATROSKA_ID_AUDIOSAMPLINGFREQ, EBML_FLOAT, 0, offsetof(MatroskaTrackAudio, samplerate), { .f = 8000.0 } }, | |
359 | { MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, EBML_FLOAT, 0, offsetof(MatroskaTrackAudio, out_samplerate) }, | |
360 | { MATROSKA_ID_AUDIOBITDEPTH, EBML_UINT, 0, offsetof(MatroskaTrackAudio, bitdepth) }, | |
361 | { MATROSKA_ID_AUDIOCHANNELS, EBML_UINT, 0, offsetof(MatroskaTrackAudio, channels), { .u = 1 } }, | |
362 | { 0 } | |
363 | }; | |
364 | ||
365 | static EbmlSyntax matroska_track_encoding_compression[] = { | |
366 | { MATROSKA_ID_ENCODINGCOMPALGO, EBML_UINT, 0, offsetof(MatroskaTrackCompression, algo), { .u = 0 } }, | |
367 | { MATROSKA_ID_ENCODINGCOMPSETTINGS, EBML_BIN, 0, offsetof(MatroskaTrackCompression, settings) }, | |
368 | { 0 } | |
369 | }; | |
370 | ||
371 | static EbmlSyntax matroska_track_encoding_encryption[] = { | |
372 | { MATROSKA_ID_ENCODINGENCALGO, EBML_UINT, 0, offsetof(MatroskaTrackEncryption,algo), {.u = 0} }, | |
373 | { MATROSKA_ID_ENCODINGENCKEYID, EBML_BIN, 0, offsetof(MatroskaTrackEncryption,key_id) }, | |
374 | { MATROSKA_ID_ENCODINGENCAESSETTINGS, EBML_NONE }, | |
375 | { MATROSKA_ID_ENCODINGSIGALGO, EBML_NONE }, | |
376 | { MATROSKA_ID_ENCODINGSIGHASHALGO, EBML_NONE }, | |
377 | { MATROSKA_ID_ENCODINGSIGKEYID, EBML_NONE }, | |
378 | { MATROSKA_ID_ENCODINGSIGNATURE, EBML_NONE }, | |
379 | { 0 } | |
380 | }; | |
381 | static EbmlSyntax matroska_track_encoding[] = { | |
382 | { MATROSKA_ID_ENCODINGSCOPE, EBML_UINT, 0, offsetof(MatroskaTrackEncoding, scope), { .u = 1 } }, | |
383 | { MATROSKA_ID_ENCODINGTYPE, EBML_UINT, 0, offsetof(MatroskaTrackEncoding, type), { .u = 0 } }, | |
384 | { MATROSKA_ID_ENCODINGCOMPRESSION, EBML_NEST, 0, offsetof(MatroskaTrackEncoding, compression), { .n = matroska_track_encoding_compression } }, | |
385 | { MATROSKA_ID_ENCODINGENCRYPTION, EBML_NEST, 0, offsetof(MatroskaTrackEncoding, encryption), { .n = matroska_track_encoding_encryption } }, | |
386 | { MATROSKA_ID_ENCODINGORDER, EBML_NONE }, | |
387 | { 0 } | |
388 | }; | |
389 | ||
390 | static EbmlSyntax matroska_track_encodings[] = { | |
391 | { MATROSKA_ID_TRACKCONTENTENCODING, EBML_NEST, sizeof(MatroskaTrackEncoding), offsetof(MatroskaTrack, encodings), { .n = matroska_track_encoding } }, | |
392 | { 0 } | |
393 | }; | |
394 | ||
395 | static EbmlSyntax matroska_track_plane[] = { | |
396 | { MATROSKA_ID_TRACKPLANEUID, EBML_UINT, 0, offsetof(MatroskaTrackPlane,uid) }, | |
397 | { MATROSKA_ID_TRACKPLANETYPE, EBML_UINT, 0, offsetof(MatroskaTrackPlane,type) }, | |
398 | { 0 } | |
399 | }; | |
400 | ||
401 | static EbmlSyntax matroska_track_combine_planes[] = { | |
402 | { MATROSKA_ID_TRACKPLANE, EBML_NEST, sizeof(MatroskaTrackPlane), offsetof(MatroskaTrackOperation,combine_planes), {.n = matroska_track_plane} }, | |
403 | { 0 } | |
404 | }; | |
405 | ||
406 | static EbmlSyntax matroska_track_operation[] = { | |
407 | { MATROSKA_ID_TRACKCOMBINEPLANES, EBML_NEST, 0, 0, {.n = matroska_track_combine_planes} }, | |
408 | { 0 } | |
409 | }; | |
410 | ||
411 | static EbmlSyntax matroska_track[] = { | |
412 | { MATROSKA_ID_TRACKNUMBER, EBML_UINT, 0, offsetof(MatroskaTrack, num) }, | |
413 | { MATROSKA_ID_TRACKNAME, EBML_UTF8, 0, offsetof(MatroskaTrack, name) }, | |
414 | { MATROSKA_ID_TRACKUID, EBML_UINT, 0, offsetof(MatroskaTrack, uid) }, | |
415 | { MATROSKA_ID_TRACKTYPE, EBML_UINT, 0, offsetof(MatroskaTrack, type) }, | |
416 | { MATROSKA_ID_CODECID, EBML_STR, 0, offsetof(MatroskaTrack, codec_id) }, | |
417 | { MATROSKA_ID_CODECPRIVATE, EBML_BIN, 0, offsetof(MatroskaTrack, codec_priv) }, | |
418 | { MATROSKA_ID_CODECDELAY, EBML_UINT, 0, offsetof(MatroskaTrack, codec_delay) }, | |
419 | { MATROSKA_ID_TRACKLANGUAGE, EBML_UTF8, 0, offsetof(MatroskaTrack, language), { .s = "eng" } }, | |
420 | { MATROSKA_ID_TRACKDEFAULTDURATION, EBML_UINT, 0, offsetof(MatroskaTrack, default_duration) }, | |
421 | { MATROSKA_ID_TRACKTIMECODESCALE, EBML_FLOAT, 0, offsetof(MatroskaTrack, time_scale), { .f = 1.0 } }, | |
422 | { MATROSKA_ID_TRACKFLAGDEFAULT, EBML_UINT, 0, offsetof(MatroskaTrack, flag_default), { .u = 1 } }, | |
423 | { MATROSKA_ID_TRACKFLAGFORCED, EBML_UINT, 0, offsetof(MatroskaTrack, flag_forced), { .u = 0 } }, | |
424 | { MATROSKA_ID_TRACKVIDEO, EBML_NEST, 0, offsetof(MatroskaTrack, video), { .n = matroska_track_video } }, | |
425 | { MATROSKA_ID_TRACKAUDIO, EBML_NEST, 0, offsetof(MatroskaTrack, audio), { .n = matroska_track_audio } }, | |
426 | { MATROSKA_ID_TRACKOPERATION, EBML_NEST, 0, offsetof(MatroskaTrack, operation), { .n = matroska_track_operation } }, | |
427 | { MATROSKA_ID_TRACKCONTENTENCODINGS, EBML_NEST, 0, 0, { .n = matroska_track_encodings } }, | |
428 | { MATROSKA_ID_TRACKMAXBLKADDID, EBML_UINT, 0, offsetof(MatroskaTrack, max_block_additional_id) }, | |
429 | { MATROSKA_ID_SEEKPREROLL, EBML_UINT, 0, offsetof(MatroskaTrack, seek_preroll) }, | |
430 | { MATROSKA_ID_TRACKFLAGENABLED, EBML_NONE }, | |
431 | { MATROSKA_ID_TRACKFLAGLACING, EBML_NONE }, | |
432 | { MATROSKA_ID_CODECNAME, EBML_NONE }, | |
433 | { MATROSKA_ID_CODECDECODEALL, EBML_NONE }, | |
434 | { MATROSKA_ID_CODECINFOURL, EBML_NONE }, | |
435 | { MATROSKA_ID_CODECDOWNLOADURL, EBML_NONE }, | |
436 | { MATROSKA_ID_TRACKMINCACHE, EBML_NONE }, | |
437 | { MATROSKA_ID_TRACKMAXCACHE, EBML_NONE }, | |
438 | { 0 } | |
439 | }; | |
440 | ||
441 | static EbmlSyntax matroska_tracks[] = { | |
442 | { MATROSKA_ID_TRACKENTRY, EBML_NEST, sizeof(MatroskaTrack), offsetof(MatroskaDemuxContext, tracks), { .n = matroska_track } }, | |
443 | { 0 } | |
444 | }; | |
445 | ||
446 | static EbmlSyntax matroska_attachment[] = { | |
447 | { MATROSKA_ID_FILEUID, EBML_UINT, 0, offsetof(MatroskaAttachment, uid) }, | |
448 | { MATROSKA_ID_FILENAME, EBML_UTF8, 0, offsetof(MatroskaAttachment, filename) }, | |
449 | { MATROSKA_ID_FILEMIMETYPE, EBML_STR, 0, offsetof(MatroskaAttachment, mime) }, | |
450 | { MATROSKA_ID_FILEDATA, EBML_BIN, 0, offsetof(MatroskaAttachment, bin) }, | |
451 | { MATROSKA_ID_FILEDESC, EBML_NONE }, | |
452 | { 0 } | |
453 | }; | |
454 | ||
455 | static EbmlSyntax matroska_attachments[] = { | |
456 | { MATROSKA_ID_ATTACHEDFILE, EBML_NEST, sizeof(MatroskaAttachment), offsetof(MatroskaDemuxContext, attachments), { .n = matroska_attachment } }, | |
457 | { 0 } | |
458 | }; | |
459 | ||
460 | static EbmlSyntax matroska_chapter_display[] = { | |
461 | { MATROSKA_ID_CHAPSTRING, EBML_UTF8, 0, offsetof(MatroskaChapter, title) }, | |
462 | { MATROSKA_ID_CHAPLANG, EBML_NONE }, | |
463 | { 0 } | |
464 | }; | |
465 | ||
466 | static EbmlSyntax matroska_chapter_entry[] = { | |
467 | { MATROSKA_ID_CHAPTERTIMESTART, EBML_UINT, 0, offsetof(MatroskaChapter, start), { .u = AV_NOPTS_VALUE } }, | |
468 | { MATROSKA_ID_CHAPTERTIMEEND, EBML_UINT, 0, offsetof(MatroskaChapter, end), { .u = AV_NOPTS_VALUE } }, | |
469 | { MATROSKA_ID_CHAPTERUID, EBML_UINT, 0, offsetof(MatroskaChapter, uid) }, | |
470 | { MATROSKA_ID_CHAPTERDISPLAY, EBML_NEST, 0, 0, { .n = matroska_chapter_display } }, | |
471 | { MATROSKA_ID_CHAPTERFLAGHIDDEN, EBML_NONE }, | |
472 | { MATROSKA_ID_CHAPTERFLAGENABLED, EBML_NONE }, | |
473 | { MATROSKA_ID_CHAPTERPHYSEQUIV, EBML_NONE }, | |
474 | { MATROSKA_ID_CHAPTERATOM, EBML_NONE }, | |
475 | { 0 } | |
476 | }; | |
477 | ||
478 | static EbmlSyntax matroska_chapter[] = { | |
479 | { MATROSKA_ID_CHAPTERATOM, EBML_NEST, sizeof(MatroskaChapter), offsetof(MatroskaDemuxContext, chapters), { .n = matroska_chapter_entry } }, | |
480 | { MATROSKA_ID_EDITIONUID, EBML_NONE }, | |
481 | { MATROSKA_ID_EDITIONFLAGHIDDEN, EBML_NONE }, | |
482 | { MATROSKA_ID_EDITIONFLAGDEFAULT, EBML_NONE }, | |
483 | { MATROSKA_ID_EDITIONFLAGORDERED, EBML_NONE }, | |
484 | { 0 } | |
485 | }; | |
486 | ||
487 | static EbmlSyntax matroska_chapters[] = { | |
488 | { MATROSKA_ID_EDITIONENTRY, EBML_NEST, 0, 0, { .n = matroska_chapter } }, | |
489 | { 0 } | |
490 | }; | |
491 | ||
492 | static EbmlSyntax matroska_index_pos[] = { | |
493 | { MATROSKA_ID_CUETRACK, EBML_UINT, 0, offsetof(MatroskaIndexPos, track) }, | |
494 | { MATROSKA_ID_CUECLUSTERPOSITION, EBML_UINT, 0, offsetof(MatroskaIndexPos, pos) }, | |
495 | { MATROSKA_ID_CUERELATIVEPOSITION,EBML_NONE }, | |
496 | { MATROSKA_ID_CUEDURATION, EBML_NONE }, | |
497 | { MATROSKA_ID_CUEBLOCKNUMBER, EBML_NONE }, | |
498 | { 0 } | |
499 | }; | |
500 | ||
501 | static EbmlSyntax matroska_index_entry[] = { | |
502 | { MATROSKA_ID_CUETIME, EBML_UINT, 0, offsetof(MatroskaIndex, time) }, | |
503 | { MATROSKA_ID_CUETRACKPOSITION, EBML_NEST, sizeof(MatroskaIndexPos), offsetof(MatroskaIndex, pos), { .n = matroska_index_pos } }, | |
504 | { 0 } | |
505 | }; | |
506 | ||
507 | static EbmlSyntax matroska_index[] = { | |
508 | { MATROSKA_ID_POINTENTRY, EBML_NEST, sizeof(MatroskaIndex), offsetof(MatroskaDemuxContext, index), { .n = matroska_index_entry } }, | |
509 | { 0 } | |
510 | }; | |
511 | ||
512 | static EbmlSyntax matroska_simpletag[] = { | |
513 | { MATROSKA_ID_TAGNAME, EBML_UTF8, 0, offsetof(MatroskaTag, name) }, | |
514 | { MATROSKA_ID_TAGSTRING, EBML_UTF8, 0, offsetof(MatroskaTag, string) }, | |
515 | { MATROSKA_ID_TAGLANG, EBML_STR, 0, offsetof(MatroskaTag, lang), { .s = "und" } }, | |
516 | { MATROSKA_ID_TAGDEFAULT, EBML_UINT, 0, offsetof(MatroskaTag, def) }, | |
517 | { MATROSKA_ID_TAGDEFAULT_BUG, EBML_UINT, 0, offsetof(MatroskaTag, def) }, | |
518 | { MATROSKA_ID_SIMPLETAG, EBML_NEST, sizeof(MatroskaTag), offsetof(MatroskaTag, sub), { .n = matroska_simpletag } }, | |
519 | { 0 } | |
520 | }; | |
521 | ||
522 | static EbmlSyntax matroska_tagtargets[] = { | |
523 | { MATROSKA_ID_TAGTARGETS_TYPE, EBML_STR, 0, offsetof(MatroskaTagTarget, type) }, | |
524 | { MATROSKA_ID_TAGTARGETS_TYPEVALUE, EBML_UINT, 0, offsetof(MatroskaTagTarget, typevalue), { .u = 50 } }, | |
525 | { MATROSKA_ID_TAGTARGETS_TRACKUID, EBML_UINT, 0, offsetof(MatroskaTagTarget, trackuid) }, | |
526 | { MATROSKA_ID_TAGTARGETS_CHAPTERUID, EBML_UINT, 0, offsetof(MatroskaTagTarget, chapteruid) }, | |
527 | { MATROSKA_ID_TAGTARGETS_ATTACHUID, EBML_UINT, 0, offsetof(MatroskaTagTarget, attachuid) }, | |
528 | { 0 } | |
529 | }; | |
530 | ||
531 | static EbmlSyntax matroska_tag[] = { | |
532 | { MATROSKA_ID_SIMPLETAG, EBML_NEST, sizeof(MatroskaTag), offsetof(MatroskaTags, tag), { .n = matroska_simpletag } }, | |
533 | { MATROSKA_ID_TAGTARGETS, EBML_NEST, 0, offsetof(MatroskaTags, target), { .n = matroska_tagtargets } }, | |
534 | { 0 } | |
535 | }; | |
536 | ||
537 | static EbmlSyntax matroska_tags[] = { | |
538 | { MATROSKA_ID_TAG, EBML_NEST, sizeof(MatroskaTags), offsetof(MatroskaDemuxContext, tags), { .n = matroska_tag } }, | |
539 | { 0 } | |
540 | }; | |
541 | ||
542 | static EbmlSyntax matroska_seekhead_entry[] = { | |
543 | { MATROSKA_ID_SEEKID, EBML_UINT, 0, offsetof(MatroskaSeekhead, id) }, | |
544 | { MATROSKA_ID_SEEKPOSITION, EBML_UINT, 0, offsetof(MatroskaSeekhead, pos), { .u = -1 } }, | |
545 | { 0 } | |
546 | }; | |
547 | ||
548 | static EbmlSyntax matroska_seekhead[] = { | |
549 | { MATROSKA_ID_SEEKENTRY, EBML_NEST, sizeof(MatroskaSeekhead), offsetof(MatroskaDemuxContext, seekhead), { .n = matroska_seekhead_entry } }, | |
550 | { 0 } | |
551 | }; | |
552 | ||
553 | static EbmlSyntax matroska_segment[] = { | |
554 | { MATROSKA_ID_INFO, EBML_NEST, 0, 0, { .n = matroska_info } }, | |
555 | { MATROSKA_ID_TRACKS, EBML_NEST, 0, 0, { .n = matroska_tracks } }, | |
556 | { MATROSKA_ID_ATTACHMENTS, EBML_NEST, 0, 0, { .n = matroska_attachments } }, | |
557 | { MATROSKA_ID_CHAPTERS, EBML_NEST, 0, 0, { .n = matroska_chapters } }, | |
558 | { MATROSKA_ID_CUES, EBML_NEST, 0, 0, { .n = matroska_index } }, | |
559 | { MATROSKA_ID_TAGS, EBML_NEST, 0, 0, { .n = matroska_tags } }, | |
560 | { MATROSKA_ID_SEEKHEAD, EBML_NEST, 0, 0, { .n = matroska_seekhead } }, | |
561 | { MATROSKA_ID_CLUSTER, EBML_STOP }, | |
562 | { 0 } | |
563 | }; | |
564 | ||
565 | static EbmlSyntax matroska_segments[] = { | |
566 | { MATROSKA_ID_SEGMENT, EBML_NEST, 0, 0, { .n = matroska_segment } }, | |
567 | { 0 } | |
568 | }; | |
569 | ||
570 | static EbmlSyntax matroska_blockmore[] = { | |
571 | { MATROSKA_ID_BLOCKADDID, EBML_UINT, 0, offsetof(MatroskaBlock,additional_id) }, | |
572 | { MATROSKA_ID_BLOCKADDITIONAL, EBML_BIN, 0, offsetof(MatroskaBlock,additional) }, | |
573 | { 0 } | |
574 | }; | |
575 | ||
576 | static EbmlSyntax matroska_blockadditions[] = { | |
577 | { MATROSKA_ID_BLOCKMORE, EBML_NEST, 0, 0, {.n = matroska_blockmore} }, | |
578 | { 0 } | |
579 | }; | |
580 | ||
581 | static EbmlSyntax matroska_blockgroup[] = { | |
582 | { MATROSKA_ID_BLOCK, EBML_BIN, 0, offsetof(MatroskaBlock, bin) }, | |
583 | { MATROSKA_ID_BLOCKADDITIONS, EBML_NEST, 0, 0, { .n = matroska_blockadditions} }, | |
584 | { MATROSKA_ID_SIMPLEBLOCK, EBML_BIN, 0, offsetof(MatroskaBlock, bin) }, | |
585 | { MATROSKA_ID_BLOCKDURATION, EBML_UINT, 0, offsetof(MatroskaBlock, duration) }, | |
586 | { MATROSKA_ID_DISCARDPADDING, EBML_SINT, 0, offsetof(MatroskaBlock, discard_padding) }, | |
587 | { MATROSKA_ID_BLOCKREFERENCE, EBML_SINT, 0, offsetof(MatroskaBlock, reference) }, | |
588 | { MATROSKA_ID_CODECSTATE, EBML_NONE }, | |
589 | { 1, EBML_UINT, 0, offsetof(MatroskaBlock, non_simple), { .u = 1 } }, | |
590 | { 0 } | |
591 | }; | |
592 | ||
593 | static EbmlSyntax matroska_cluster[] = { | |
594 | { MATROSKA_ID_CLUSTERTIMECODE, EBML_UINT, 0, offsetof(MatroskaCluster, timecode) }, | |
595 | { MATROSKA_ID_BLOCKGROUP, EBML_NEST, sizeof(MatroskaBlock), offsetof(MatroskaCluster, blocks), { .n = matroska_blockgroup } }, | |
596 | { MATROSKA_ID_SIMPLEBLOCK, EBML_PASS, sizeof(MatroskaBlock), offsetof(MatroskaCluster, blocks), { .n = matroska_blockgroup } }, | |
597 | { MATROSKA_ID_CLUSTERPOSITION, EBML_NONE }, | |
598 | { MATROSKA_ID_CLUSTERPREVSIZE, EBML_NONE }, | |
599 | { 0 } | |
600 | }; | |
601 | ||
602 | static EbmlSyntax matroska_clusters[] = { | |
603 | { MATROSKA_ID_CLUSTER, EBML_NEST, 0, 0, { .n = matroska_cluster } }, | |
604 | { MATROSKA_ID_INFO, EBML_NONE }, | |
605 | { MATROSKA_ID_CUES, EBML_NONE }, | |
606 | { MATROSKA_ID_TAGS, EBML_NONE }, | |
607 | { MATROSKA_ID_SEEKHEAD, EBML_NONE }, | |
608 | { 0 } | |
609 | }; | |
610 | ||
611 | static EbmlSyntax matroska_cluster_incremental_parsing[] = { | |
612 | { MATROSKA_ID_CLUSTERTIMECODE, EBML_UINT, 0, offsetof(MatroskaCluster, timecode) }, | |
613 | { MATROSKA_ID_BLOCKGROUP, EBML_NEST, sizeof(MatroskaBlock), offsetof(MatroskaCluster, blocks), { .n = matroska_blockgroup } }, | |
614 | { MATROSKA_ID_SIMPLEBLOCK, EBML_PASS, sizeof(MatroskaBlock), offsetof(MatroskaCluster, blocks), { .n = matroska_blockgroup } }, | |
615 | { MATROSKA_ID_CLUSTERPOSITION, EBML_NONE }, | |
616 | { MATROSKA_ID_CLUSTERPREVSIZE, EBML_NONE }, | |
617 | { MATROSKA_ID_INFO, EBML_NONE }, | |
618 | { MATROSKA_ID_CUES, EBML_NONE }, | |
619 | { MATROSKA_ID_TAGS, EBML_NONE }, | |
620 | { MATROSKA_ID_SEEKHEAD, EBML_NONE }, | |
621 | { MATROSKA_ID_CLUSTER, EBML_STOP }, | |
622 | { 0 } | |
623 | }; | |
624 | ||
625 | static EbmlSyntax matroska_cluster_incremental[] = { | |
626 | { MATROSKA_ID_CLUSTERTIMECODE, EBML_UINT, 0, offsetof(MatroskaCluster, timecode) }, | |
627 | { MATROSKA_ID_BLOCKGROUP, EBML_STOP }, | |
628 | { MATROSKA_ID_SIMPLEBLOCK, EBML_STOP }, | |
629 | { MATROSKA_ID_CLUSTERPOSITION, EBML_NONE }, | |
630 | { MATROSKA_ID_CLUSTERPREVSIZE, EBML_NONE }, | |
631 | { 0 } | |
632 | }; | |
633 | ||
634 | static EbmlSyntax matroska_clusters_incremental[] = { | |
635 | { MATROSKA_ID_CLUSTER, EBML_NEST, 0, 0, { .n = matroska_cluster_incremental } }, | |
636 | { MATROSKA_ID_INFO, EBML_NONE }, | |
637 | { MATROSKA_ID_CUES, EBML_NONE }, | |
638 | { MATROSKA_ID_TAGS, EBML_NONE }, | |
639 | { MATROSKA_ID_SEEKHEAD, EBML_NONE }, | |
640 | { 0 } | |
641 | }; | |
642 | ||
643 | static const char *const matroska_doctypes[] = { "matroska", "webm" }; | |
644 | ||
645 | static int matroska_resync(MatroskaDemuxContext *matroska, int64_t last_pos) | |
646 | { | |
647 | AVIOContext *pb = matroska->ctx->pb; | |
648 | uint32_t id; | |
649 | matroska->current_id = 0; | |
650 | matroska->num_levels = 0; | |
651 | ||
652 | /* seek to next position to resync from */ | |
653 | if (avio_seek(pb, last_pos + 1, SEEK_SET) < 0) | |
654 | goto eof; | |
655 | ||
656 | id = avio_rb32(pb); | |
657 | ||
658 | // try to find a toplevel element | |
659 | while (!avio_feof(pb)) { | |
660 | if (id == MATROSKA_ID_INFO || id == MATROSKA_ID_TRACKS || | |
661 | id == MATROSKA_ID_CUES || id == MATROSKA_ID_TAGS || | |
662 | id == MATROSKA_ID_SEEKHEAD || id == MATROSKA_ID_ATTACHMENTS || | |
663 | id == MATROSKA_ID_CLUSTER || id == MATROSKA_ID_CHAPTERS) { | |
664 | matroska->current_id = id; | |
665 | return 0; | |
666 | } | |
667 | id = (id << 8) | avio_r8(pb); | |
668 | } | |
669 | ||
670 | eof: | |
671 | matroska->done = 1; | |
672 | return AVERROR_EOF; | |
673 | } | |
674 | ||
675 | /* | |
676 | * Return: Whether we reached the end of a level in the hierarchy or not. | |
677 | */ | |
678 | static int ebml_level_end(MatroskaDemuxContext *matroska) | |
679 | { | |
680 | AVIOContext *pb = matroska->ctx->pb; | |
681 | int64_t pos = avio_tell(pb); | |
682 | ||
683 | if (matroska->num_levels > 0) { | |
684 | MatroskaLevel *level = &matroska->levels[matroska->num_levels - 1]; | |
685 | if (pos - level->start >= level->length || matroska->current_id) { | |
686 | matroska->num_levels--; | |
687 | return 1; | |
688 | } | |
689 | } | |
690 | return 0; | |
691 | } | |
692 | ||
693 | /* | |
694 | * Read: an "EBML number", which is defined as a variable-length | |
695 | * array of bytes. The first byte indicates the length by giving a | |
696 | * number of 0-bits followed by a one. The position of the first | |
697 | * "one" bit inside the first byte indicates the length of this | |
698 | * number. | |
699 | * Returns: number of bytes read, < 0 on error | |
700 | */ | |
701 | static int ebml_read_num(MatroskaDemuxContext *matroska, AVIOContext *pb, | |
702 | int max_size, uint64_t *number) | |
703 | { | |
704 | int read = 1, n = 1; | |
705 | uint64_t total = 0; | |
706 | ||
707 | /* The first byte tells us the length in bytes - avio_r8() can normally | |
708 | * return 0, but since that's not a valid first ebmlID byte, we can | |
709 | * use it safely here to catch EOS. */ | |
710 | if (!(total = avio_r8(pb))) { | |
711 | /* we might encounter EOS here */ | |
712 | if (!avio_feof(pb)) { | |
713 | int64_t pos = avio_tell(pb); | |
714 | av_log(matroska->ctx, AV_LOG_ERROR, | |
715 | "Read error at pos. %"PRIu64" (0x%"PRIx64")\n", | |
716 | pos, pos); | |
717 | return pb->error ? pb->error : AVERROR(EIO); | |
718 | } | |
719 | return AVERROR_EOF; | |
720 | } | |
721 | ||
722 | /* get the length of the EBML number */ | |
723 | read = 8 - ff_log2_tab[total]; | |
724 | if (read > max_size) { | |
725 | int64_t pos = avio_tell(pb) - 1; | |
726 | av_log(matroska->ctx, AV_LOG_ERROR, | |
727 | "Invalid EBML number size tag 0x%02x at pos %"PRIu64" (0x%"PRIx64")\n", | |
728 | (uint8_t) total, pos, pos); | |
729 | return AVERROR_INVALIDDATA; | |
730 | } | |
731 | ||
732 | /* read out length */ | |
733 | total ^= 1 << ff_log2_tab[total]; | |
734 | while (n++ < read) | |
735 | total = (total << 8) | avio_r8(pb); | |
736 | ||
737 | *number = total; | |
738 | ||
739 | return read; | |
740 | } | |
741 | ||
742 | /** | |
743 | * Read a EBML length value. | |
744 | * This needs special handling for the "unknown length" case which has multiple | |
745 | * encodings. | |
746 | */ | |
747 | static int ebml_read_length(MatroskaDemuxContext *matroska, AVIOContext *pb, | |
748 | uint64_t *number) | |
749 | { | |
750 | int res = ebml_read_num(matroska, pb, 8, number); | |
751 | if (res > 0 && *number + 1 == 1ULL << (7 * res)) | |
752 | *number = 0xffffffffffffffULL; | |
753 | return res; | |
754 | } | |
755 | ||
756 | /* | |
757 | * Read the next element as an unsigned int. | |
758 | * 0 is success, < 0 is failure. | |
759 | */ | |
760 | static int ebml_read_uint(AVIOContext *pb, int size, uint64_t *num) | |
761 | { | |
762 | int n = 0; | |
763 | ||
764 | if (size > 8) | |
765 | return AVERROR_INVALIDDATA; | |
766 | ||
767 | /* big-endian ordering; build up number */ | |
768 | *num = 0; | |
769 | while (n++ < size) | |
770 | *num = (*num << 8) | avio_r8(pb); | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
775 | /* | |
776 | * Read the next element as a signed int. | |
777 | * 0 is success, < 0 is failure. | |
778 | */ | |
779 | static int ebml_read_sint(AVIOContext *pb, int size, int64_t *num) | |
780 | { | |
781 | int n = 1; | |
782 | ||
783 | if (size > 8) | |
784 | return AVERROR_INVALIDDATA; | |
785 | ||
786 | if (size == 0) { | |
787 | *num = 0; | |
788 | } else { | |
789 | *num = sign_extend(avio_r8(pb), 8); | |
790 | ||
791 | /* big-endian ordering; build up number */ | |
792 | while (n++ < size) | |
793 | *num = (*num << 8) | avio_r8(pb); | |
794 | } | |
795 | ||
796 | return 0; | |
797 | } | |
798 | ||
799 | /* | |
800 | * Read the next element as a float. | |
801 | * 0 is success, < 0 is failure. | |
802 | */ | |
803 | static int ebml_read_float(AVIOContext *pb, int size, double *num) | |
804 | { | |
805 | if (size == 0) | |
806 | *num = 0; | |
807 | else if (size == 4) | |
808 | *num = av_int2float(avio_rb32(pb)); | |
809 | else if (size == 8) | |
810 | *num = av_int2double(avio_rb64(pb)); | |
811 | else | |
812 | return AVERROR_INVALIDDATA; | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | /* | |
818 | * Read the next element as an ASCII string. | |
819 | * 0 is success, < 0 is failure. | |
820 | */ | |
821 | static int ebml_read_ascii(AVIOContext *pb, int size, char **str) | |
822 | { | |
823 | char *res; | |
824 | ||
825 | /* EBML strings are usually not 0-terminated, so we allocate one | |
826 | * byte more, read the string and NULL-terminate it ourselves. */ | |
827 | if (!(res = av_malloc(size + 1))) | |
828 | return AVERROR(ENOMEM); | |
829 | if (avio_read(pb, (uint8_t *) res, size) != size) { | |
830 | av_free(res); | |
831 | return AVERROR(EIO); | |
832 | } | |
833 | (res)[size] = '\0'; | |
834 | av_free(*str); | |
835 | *str = res; | |
836 | ||
837 | return 0; | |
838 | } | |
839 | ||
840 | /* | |
841 | * Read the next element as binary data. | |
842 | * 0 is success, < 0 is failure. | |
843 | */ | |
844 | static int ebml_read_binary(AVIOContext *pb, int length, EbmlBin *bin) | |
845 | { | |
846 | av_fast_padded_malloc(&bin->data, &bin->size, length); | |
847 | if (!bin->data) | |
848 | return AVERROR(ENOMEM); | |
849 | ||
850 | bin->size = length; | |
851 | bin->pos = avio_tell(pb); | |
852 | if (avio_read(pb, bin->data, length) != length) { | |
853 | av_freep(&bin->data); | |
854 | bin->size = 0; | |
855 | return AVERROR(EIO); | |
856 | } | |
857 | ||
858 | return 0; | |
859 | } | |
860 | ||
861 | /* | |
862 | * Read the next element, but only the header. The contents | |
863 | * are supposed to be sub-elements which can be read separately. | |
864 | * 0 is success, < 0 is failure. | |
865 | */ | |
866 | static int ebml_read_master(MatroskaDemuxContext *matroska, uint64_t length) | |
867 | { | |
868 | AVIOContext *pb = matroska->ctx->pb; | |
869 | MatroskaLevel *level; | |
870 | ||
871 | if (matroska->num_levels >= EBML_MAX_DEPTH) { | |
872 | av_log(matroska->ctx, AV_LOG_ERROR, | |
873 | "File moves beyond max. allowed depth (%d)\n", EBML_MAX_DEPTH); | |
874 | return AVERROR(ENOSYS); | |
875 | } | |
876 | ||
877 | level = &matroska->levels[matroska->num_levels++]; | |
878 | level->start = avio_tell(pb); | |
879 | level->length = length; | |
880 | ||
881 | return 0; | |
882 | } | |
883 | ||
884 | /* | |
885 | * Read signed/unsigned "EBML" numbers. | |
886 | * Return: number of bytes processed, < 0 on error | |
887 | */ | |
888 | static int matroska_ebmlnum_uint(MatroskaDemuxContext *matroska, | |
889 | uint8_t *data, uint32_t size, uint64_t *num) | |
890 | { | |
891 | AVIOContext pb; | |
892 | ffio_init_context(&pb, data, size, 0, NULL, NULL, NULL, NULL); | |
893 | return ebml_read_num(matroska, &pb, FFMIN(size, 8), num); | |
894 | } | |
895 | ||
896 | /* | |
897 | * Same as above, but signed. | |
898 | */ | |
899 | static int matroska_ebmlnum_sint(MatroskaDemuxContext *matroska, | |
900 | uint8_t *data, uint32_t size, int64_t *num) | |
901 | { | |
902 | uint64_t unum; | |
903 | int res; | |
904 | ||
905 | /* read as unsigned number first */ | |
906 | if ((res = matroska_ebmlnum_uint(matroska, data, size, &unum)) < 0) | |
907 | return res; | |
908 | ||
909 | /* make signed (weird way) */ | |
910 | *num = unum - ((1LL << (7 * res - 1)) - 1); | |
911 | ||
912 | return res; | |
913 | } | |
914 | ||
915 | static int ebml_parse_elem(MatroskaDemuxContext *matroska, | |
916 | EbmlSyntax *syntax, void *data); | |
917 | ||
918 | static int ebml_parse_id(MatroskaDemuxContext *matroska, EbmlSyntax *syntax, | |
919 | uint32_t id, void *data) | |
920 | { | |
921 | int i; | |
922 | for (i = 0; syntax[i].id; i++) | |
923 | if (id == syntax[i].id) | |
924 | break; | |
925 | if (!syntax[i].id && id == MATROSKA_ID_CLUSTER && | |
926 | matroska->num_levels > 0 && | |
927 | matroska->levels[matroska->num_levels - 1].length == 0xffffffffffffff) | |
928 | return 0; // we reached the end of an unknown size cluster | |
929 | if (!syntax[i].id && id != EBML_ID_VOID && id != EBML_ID_CRC32) { | |
930 | av_log(matroska->ctx, AV_LOG_INFO, "Unknown entry 0x%"PRIX32"\n", id); | |
931 | if (matroska->ctx->error_recognition & AV_EF_EXPLODE) | |
932 | return AVERROR_INVALIDDATA; | |
933 | } | |
934 | return ebml_parse_elem(matroska, &syntax[i], data); | |
935 | } | |
936 | ||
937 | static int ebml_parse(MatroskaDemuxContext *matroska, EbmlSyntax *syntax, | |
938 | void *data) | |
939 | { | |
940 | if (!matroska->current_id) { | |
941 | uint64_t id; | |
942 | int res = ebml_read_num(matroska, matroska->ctx->pb, 4, &id); | |
943 | if (res < 0) | |
944 | return res; | |
945 | matroska->current_id = id | 1 << 7 * res; | |
946 | } | |
947 | return ebml_parse_id(matroska, syntax, matroska->current_id, data); | |
948 | } | |
949 | ||
950 | static int ebml_parse_nest(MatroskaDemuxContext *matroska, EbmlSyntax *syntax, | |
951 | void *data) | |
952 | { | |
953 | int i, res = 0; | |
954 | ||
955 | for (i = 0; syntax[i].id; i++) | |
956 | switch (syntax[i].type) { | |
957 | case EBML_UINT: | |
958 | *(uint64_t *) ((char *) data + syntax[i].data_offset) = syntax[i].def.u; | |
959 | break; | |
960 | case EBML_FLOAT: | |
961 | *(double *) ((char *) data + syntax[i].data_offset) = syntax[i].def.f; | |
962 | break; | |
963 | case EBML_STR: | |
964 | case EBML_UTF8: | |
965 | // the default may be NULL | |
966 | if (syntax[i].def.s) { | |
967 | uint8_t **dst = (uint8_t **) ((uint8_t *) data + syntax[i].data_offset); | |
968 | *dst = av_strdup(syntax[i].def.s); | |
969 | if (!*dst) | |
970 | return AVERROR(ENOMEM); | |
971 | } | |
972 | break; | |
973 | } | |
974 | ||
975 | while (!res && !ebml_level_end(matroska)) | |
976 | res = ebml_parse(matroska, syntax, data); | |
977 | ||
978 | return res; | |
979 | } | |
980 | ||
981 | static int ebml_parse_elem(MatroskaDemuxContext *matroska, | |
982 | EbmlSyntax *syntax, void *data) | |
983 | { | |
984 | static const uint64_t max_lengths[EBML_TYPE_COUNT] = { | |
985 | [EBML_UINT] = 8, | |
986 | [EBML_FLOAT] = 8, | |
987 | // max. 16 MB for strings | |
988 | [EBML_STR] = 0x1000000, | |
989 | [EBML_UTF8] = 0x1000000, | |
990 | // max. 256 MB for binary data | |
991 | [EBML_BIN] = 0x10000000, | |
992 | // no limits for anything else | |
993 | }; | |
994 | AVIOContext *pb = matroska->ctx->pb; | |
995 | uint32_t id = syntax->id; | |
996 | uint64_t length; | |
997 | int res; | |
998 | void *newelem; | |
999 | ||
1000 | data = (char *) data + syntax->data_offset; | |
1001 | if (syntax->list_elem_size) { | |
1002 | EbmlList *list = data; | |
1003 | newelem = av_realloc_array(list->elem, list->nb_elem + 1, syntax->list_elem_size); | |
1004 | if (!newelem) | |
1005 | return AVERROR(ENOMEM); | |
1006 | list->elem = newelem; | |
1007 | data = (char *) list->elem + list->nb_elem * syntax->list_elem_size; | |
1008 | memset(data, 0, syntax->list_elem_size); | |
1009 | list->nb_elem++; | |
1010 | } | |
1011 | ||
1012 | if (syntax->type != EBML_PASS && syntax->type != EBML_STOP) { | |
1013 | matroska->current_id = 0; | |
1014 | if ((res = ebml_read_length(matroska, pb, &length)) < 0) | |
1015 | return res; | |
1016 | if (max_lengths[syntax->type] && length > max_lengths[syntax->type]) { | |
1017 | av_log(matroska->ctx, AV_LOG_ERROR, | |
1018 | "Invalid length 0x%"PRIx64" > 0x%"PRIx64" for syntax element %i\n", | |
1019 | length, max_lengths[syntax->type], syntax->type); | |
1020 | return AVERROR_INVALIDDATA; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | switch (syntax->type) { | |
1025 | case EBML_UINT: | |
1026 | res = ebml_read_uint(pb, length, data); | |
1027 | break; | |
1028 | case EBML_SINT: | |
1029 | res = ebml_read_sint(pb, length, data); | |
1030 | break; | |
1031 | case EBML_FLOAT: | |
1032 | res = ebml_read_float(pb, length, data); | |
1033 | break; | |
1034 | case EBML_STR: | |
1035 | case EBML_UTF8: | |
1036 | res = ebml_read_ascii(pb, length, data); | |
1037 | break; | |
1038 | case EBML_BIN: | |
1039 | res = ebml_read_binary(pb, length, data); | |
1040 | break; | |
1041 | case EBML_NEST: | |
1042 | if ((res = ebml_read_master(matroska, length)) < 0) | |
1043 | return res; | |
1044 | if (id == MATROSKA_ID_SEGMENT) | |
1045 | matroska->segment_start = avio_tell(matroska->ctx->pb); | |
1046 | return ebml_parse_nest(matroska, syntax->def.n, data); | |
1047 | case EBML_PASS: | |
1048 | return ebml_parse_id(matroska, syntax->def.n, id, data); | |
1049 | case EBML_STOP: | |
1050 | return 1; | |
1051 | default: | |
1052 | if (ffio_limit(pb, length) != length) | |
1053 | return AVERROR(EIO); | |
1054 | return avio_skip(pb, length) < 0 ? AVERROR(EIO) : 0; | |
1055 | } | |
1056 | if (res == AVERROR_INVALIDDATA) | |
1057 | av_log(matroska->ctx, AV_LOG_ERROR, "Invalid element\n"); | |
1058 | else if (res == AVERROR(EIO)) | |
1059 | av_log(matroska->ctx, AV_LOG_ERROR, "Read error\n"); | |
1060 | return res; | |
1061 | } | |
1062 | ||
1063 | static void ebml_free(EbmlSyntax *syntax, void *data) | |
1064 | { | |
1065 | int i, j; | |
1066 | for (i = 0; syntax[i].id; i++) { | |
1067 | void *data_off = (char *) data + syntax[i].data_offset; | |
1068 | switch (syntax[i].type) { | |
1069 | case EBML_STR: | |
1070 | case EBML_UTF8: | |
1071 | av_freep(data_off); | |
1072 | break; | |
1073 | case EBML_BIN: | |
1074 | av_freep(&((EbmlBin *) data_off)->data); | |
1075 | break; | |
1076 | case EBML_NEST: | |
1077 | if (syntax[i].list_elem_size) { | |
1078 | EbmlList *list = data_off; | |
1079 | char *ptr = list->elem; | |
1080 | for (j = 0; j < list->nb_elem; | |
1081 | j++, ptr += syntax[i].list_elem_size) | |
1082 | ebml_free(syntax[i].def.n, ptr); | |
1083 | av_free(list->elem); | |
1084 | } else | |
1085 | ebml_free(syntax[i].def.n, data_off); | |
1086 | default: | |
1087 | break; | |
1088 | } | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | * Autodetecting... | |
1094 | */ | |
1095 | static int matroska_probe(AVProbeData *p) | |
1096 | { | |
1097 | uint64_t total = 0; | |
1098 | int len_mask = 0x80, size = 1, n = 1, i; | |
1099 | ||
1100 | /* EBML header? */ | |
1101 | if (AV_RB32(p->buf) != EBML_ID_HEADER) | |
1102 | return 0; | |
1103 | ||
1104 | /* length of header */ | |
1105 | total = p->buf[4]; | |
1106 | while (size <= 8 && !(total & len_mask)) { | |
1107 | size++; | |
1108 | len_mask >>= 1; | |
1109 | } | |
1110 | if (size > 8) | |
1111 | return 0; | |
1112 | total &= (len_mask - 1); | |
1113 | while (n < size) | |
1114 | total = (total << 8) | p->buf[4 + n++]; | |
1115 | ||
1116 | /* Does the probe data contain the whole header? */ | |
1117 | if (p->buf_size < 4 + size + total) | |
1118 | return 0; | |
1119 | ||
1120 | /* The header should contain a known document type. For now, | |
1121 | * we don't parse the whole header but simply check for the | |
1122 | * availability of that array of characters inside the header. | |
1123 | * Not fully fool-proof, but good enough. */ | |
1124 | for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++) { | |
1125 | int probelen = strlen(matroska_doctypes[i]); | |
1126 | if (total < probelen) | |
1127 | continue; | |
1128 | for (n = 4 + size; n <= 4 + size + total - probelen; n++) | |
1129 | if (!memcmp(p->buf + n, matroska_doctypes[i], probelen)) | |
1130 | return AVPROBE_SCORE_MAX; | |
1131 | } | |
1132 | ||
1133 | // probably valid EBML header but no recognized doctype | |
1134 | return AVPROBE_SCORE_EXTENSION; | |
1135 | } | |
1136 | ||
1137 | static MatroskaTrack *matroska_find_track_by_num(MatroskaDemuxContext *matroska, | |
1138 | int num) | |
1139 | { | |
1140 | MatroskaTrack *tracks = matroska->tracks.elem; | |
1141 | int i; | |
1142 | ||
1143 | for (i = 0; i < matroska->tracks.nb_elem; i++) | |
1144 | if (tracks[i].num == num) | |
1145 | return &tracks[i]; | |
1146 | ||
1147 | av_log(matroska->ctx, AV_LOG_ERROR, "Invalid track number %d\n", num); | |
1148 | return NULL; | |
1149 | } | |
1150 | ||
1151 | static int matroska_decode_buffer(uint8_t **buf, int *buf_size, | |
1152 | MatroskaTrack *track) | |
1153 | { | |
1154 | MatroskaTrackEncoding *encodings = track->encodings.elem; | |
1155 | uint8_t *data = *buf; | |
1156 | int isize = *buf_size; | |
1157 | uint8_t *pkt_data = NULL; | |
1158 | uint8_t av_unused *newpktdata; | |
1159 | int pkt_size = isize; | |
1160 | int result = 0; | |
1161 | int olen; | |
1162 | ||
1163 | if (pkt_size >= 10000000U) | |
1164 | return AVERROR_INVALIDDATA; | |
1165 | ||
1166 | switch (encodings[0].compression.algo) { | |
1167 | case MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP: | |
1168 | { | |
1169 | int header_size = encodings[0].compression.settings.size; | |
1170 | uint8_t *header = encodings[0].compression.settings.data; | |
1171 | ||
1172 | if (header_size && !header) { | |
1173 | av_log(NULL, AV_LOG_ERROR, "Compression size but no data in headerstrip\n"); | |
1174 | return -1; | |
1175 | } | |
1176 | ||
1177 | if (!header_size) | |
1178 | return 0; | |
1179 | ||
1180 | pkt_size = isize + header_size; | |
1181 | pkt_data = av_malloc(pkt_size); | |
1182 | if (!pkt_data) | |
1183 | return AVERROR(ENOMEM); | |
1184 | ||
1185 | memcpy(pkt_data, header, header_size); | |
1186 | memcpy(pkt_data + header_size, data, isize); | |
1187 | break; | |
1188 | } | |
1189 | #if CONFIG_LZO | |
1190 | case MATROSKA_TRACK_ENCODING_COMP_LZO: | |
1191 | do { | |
1192 | olen = pkt_size *= 3; | |
1193 | newpktdata = av_realloc(pkt_data, pkt_size + AV_LZO_OUTPUT_PADDING); | |
1194 | if (!newpktdata) { | |
1195 | result = AVERROR(ENOMEM); | |
1196 | goto failed; | |
1197 | } | |
1198 | pkt_data = newpktdata; | |
1199 | result = av_lzo1x_decode(pkt_data, &olen, data, &isize); | |
1200 | } while (result == AV_LZO_OUTPUT_FULL && pkt_size < 10000000); | |
1201 | if (result) { | |
1202 | result = AVERROR_INVALIDDATA; | |
1203 | goto failed; | |
1204 | } | |
1205 | pkt_size -= olen; | |
1206 | break; | |
1207 | #endif | |
1208 | #if CONFIG_ZLIB | |
1209 | case MATROSKA_TRACK_ENCODING_COMP_ZLIB: | |
1210 | { | |
1211 | z_stream zstream = { 0 }; | |
1212 | if (inflateInit(&zstream) != Z_OK) | |
1213 | return -1; | |
1214 | zstream.next_in = data; | |
1215 | zstream.avail_in = isize; | |
1216 | do { | |
1217 | pkt_size *= 3; | |
1218 | newpktdata = av_realloc(pkt_data, pkt_size); | |
1219 | if (!newpktdata) { | |
1220 | inflateEnd(&zstream); | |
1221 | goto failed; | |
1222 | } | |
1223 | pkt_data = newpktdata; | |
1224 | zstream.avail_out = pkt_size - zstream.total_out; | |
1225 | zstream.next_out = pkt_data + zstream.total_out; | |
1226 | if (pkt_data) { | |
1227 | result = inflate(&zstream, Z_NO_FLUSH); | |
1228 | } else | |
1229 | result = Z_MEM_ERROR; | |
1230 | } while (result == Z_OK && pkt_size < 10000000); | |
1231 | pkt_size = zstream.total_out; | |
1232 | inflateEnd(&zstream); | |
1233 | if (result != Z_STREAM_END) { | |
1234 | if (result == Z_MEM_ERROR) | |
1235 | result = AVERROR(ENOMEM); | |
1236 | else | |
1237 | result = AVERROR_INVALIDDATA; | |
1238 | goto failed; | |
1239 | } | |
1240 | break; | |
1241 | } | |
1242 | #endif | |
1243 | #if CONFIG_BZLIB | |
1244 | case MATROSKA_TRACK_ENCODING_COMP_BZLIB: | |
1245 | { | |
1246 | bz_stream bzstream = { 0 }; | |
1247 | if (BZ2_bzDecompressInit(&bzstream, 0, 0) != BZ_OK) | |
1248 | return -1; | |
1249 | bzstream.next_in = data; | |
1250 | bzstream.avail_in = isize; | |
1251 | do { | |
1252 | pkt_size *= 3; | |
1253 | newpktdata = av_realloc(pkt_data, pkt_size); | |
1254 | if (!newpktdata) { | |
1255 | BZ2_bzDecompressEnd(&bzstream); | |
1256 | goto failed; | |
1257 | } | |
1258 | pkt_data = newpktdata; | |
1259 | bzstream.avail_out = pkt_size - bzstream.total_out_lo32; | |
1260 | bzstream.next_out = pkt_data + bzstream.total_out_lo32; | |
1261 | if (pkt_data) { | |
1262 | result = BZ2_bzDecompress(&bzstream); | |
1263 | } else | |
1264 | result = BZ_MEM_ERROR; | |
1265 | } while (result == BZ_OK && pkt_size < 10000000); | |
1266 | pkt_size = bzstream.total_out_lo32; | |
1267 | BZ2_bzDecompressEnd(&bzstream); | |
1268 | if (result != BZ_STREAM_END) { | |
1269 | if (result == BZ_MEM_ERROR) | |
1270 | result = AVERROR(ENOMEM); | |
1271 | else | |
1272 | result = AVERROR_INVALIDDATA; | |
1273 | goto failed; | |
1274 | } | |
1275 | break; | |
1276 | } | |
1277 | #endif | |
1278 | default: | |
1279 | return AVERROR_INVALIDDATA; | |
1280 | } | |
1281 | ||
1282 | *buf = pkt_data; | |
1283 | *buf_size = pkt_size; | |
1284 | return 0; | |
1285 | ||
1286 | failed: | |
1287 | av_free(pkt_data); | |
1288 | return result; | |
1289 | } | |
1290 | ||
1291 | static void matroska_convert_tag(AVFormatContext *s, EbmlList *list, | |
1292 | AVDictionary **metadata, char *prefix) | |
1293 | { | |
1294 | MatroskaTag *tags = list->elem; | |
1295 | char key[1024]; | |
1296 | int i; | |
1297 | ||
1298 | for (i = 0; i < list->nb_elem; i++) { | |
1299 | const char *lang = tags[i].lang && | |
1300 | strcmp(tags[i].lang, "und") ? tags[i].lang : NULL; | |
1301 | ||
1302 | if (!tags[i].name) { | |
1303 | av_log(s, AV_LOG_WARNING, "Skipping invalid tag with no TagName.\n"); | |
1304 | continue; | |
1305 | } | |
1306 | if (prefix) | |
1307 | snprintf(key, sizeof(key), "%s/%s", prefix, tags[i].name); | |
1308 | else | |
1309 | av_strlcpy(key, tags[i].name, sizeof(key)); | |
1310 | if (tags[i].def || !lang) { | |
1311 | av_dict_set(metadata, key, tags[i].string, 0); | |
1312 | if (tags[i].sub.nb_elem) | |
1313 | matroska_convert_tag(s, &tags[i].sub, metadata, key); | |
1314 | } | |
1315 | if (lang) { | |
1316 | av_strlcat(key, "-", sizeof(key)); | |
1317 | av_strlcat(key, lang, sizeof(key)); | |
1318 | av_dict_set(metadata, key, tags[i].string, 0); | |
1319 | if (tags[i].sub.nb_elem) | |
1320 | matroska_convert_tag(s, &tags[i].sub, metadata, key); | |
1321 | } | |
1322 | } | |
1323 | ff_metadata_conv(metadata, NULL, ff_mkv_metadata_conv); | |
1324 | } | |
1325 | ||
1326 | static void matroska_convert_tags(AVFormatContext *s) | |
1327 | { | |
1328 | MatroskaDemuxContext *matroska = s->priv_data; | |
1329 | MatroskaTags *tags = matroska->tags.elem; | |
1330 | int i, j; | |
1331 | ||
1332 | for (i = 0; i < matroska->tags.nb_elem; i++) { | |
1333 | if (tags[i].target.attachuid) { | |
1334 | MatroskaAttachment *attachment = matroska->attachments.elem; | |
1335 | for (j = 0; j < matroska->attachments.nb_elem; j++) | |
1336 | if (attachment[j].uid == tags[i].target.attachuid && | |
1337 | attachment[j].stream) | |
1338 | matroska_convert_tag(s, &tags[i].tag, | |
1339 | &attachment[j].stream->metadata, NULL); | |
1340 | } else if (tags[i].target.chapteruid) { | |
1341 | MatroskaChapter *chapter = matroska->chapters.elem; | |
1342 | for (j = 0; j < matroska->chapters.nb_elem; j++) | |
1343 | if (chapter[j].uid == tags[i].target.chapteruid && | |
1344 | chapter[j].chapter) | |
1345 | matroska_convert_tag(s, &tags[i].tag, | |
1346 | &chapter[j].chapter->metadata, NULL); | |
1347 | } else if (tags[i].target.trackuid) { | |
1348 | MatroskaTrack *track = matroska->tracks.elem; | |
1349 | for (j = 0; j < matroska->tracks.nb_elem; j++) | |
1350 | if (track[j].uid == tags[i].target.trackuid && track[j].stream) | |
1351 | matroska_convert_tag(s, &tags[i].tag, | |
1352 | &track[j].stream->metadata, NULL); | |
1353 | } else { | |
1354 | matroska_convert_tag(s, &tags[i].tag, &s->metadata, | |
1355 | tags[i].target.type); | |
1356 | } | |
1357 | } | |
1358 | } | |
1359 | ||
1360 | static int matroska_parse_seekhead_entry(MatroskaDemuxContext *matroska, | |
1361 | int idx) | |
1362 | { | |
1363 | EbmlList *seekhead_list = &matroska->seekhead; | |
1364 | uint32_t level_up = matroska->level_up; | |
1365 | uint32_t saved_id = matroska->current_id; | |
1366 | MatroskaSeekhead *seekhead = seekhead_list->elem; | |
1367 | int64_t before_pos = avio_tell(matroska->ctx->pb); | |
1368 | MatroskaLevel level; | |
1369 | int64_t offset; | |
1370 | int ret = 0; | |
1371 | ||
1372 | if (idx >= seekhead_list->nb_elem || | |
1373 | seekhead[idx].id == MATROSKA_ID_SEEKHEAD || | |
1374 | seekhead[idx].id == MATROSKA_ID_CLUSTER) | |
1375 | return 0; | |
1376 | ||
1377 | /* seek */ | |
1378 | offset = seekhead[idx].pos + matroska->segment_start; | |
1379 | if (avio_seek(matroska->ctx->pb, offset, SEEK_SET) == offset) { | |
1380 | /* We don't want to lose our seekhead level, so we add | |
1381 | * a dummy. This is a crude hack. */ | |
1382 | if (matroska->num_levels == EBML_MAX_DEPTH) { | |
1383 | av_log(matroska->ctx, AV_LOG_INFO, | |
1384 | "Max EBML element depth (%d) reached, " | |
1385 | "cannot parse further.\n", EBML_MAX_DEPTH); | |
1386 | ret = AVERROR_INVALIDDATA; | |
1387 | } else { | |
1388 | level.start = 0; | |
1389 | level.length = (uint64_t) -1; | |
1390 | matroska->levels[matroska->num_levels] = level; | |
1391 | matroska->num_levels++; | |
1392 | matroska->current_id = 0; | |
1393 | ||
1394 | ret = ebml_parse(matroska, matroska_segment, matroska); | |
1395 | ||
1396 | /* remove dummy level */ | |
1397 | while (matroska->num_levels) { | |
1398 | uint64_t length = matroska->levels[--matroska->num_levels].length; | |
1399 | if (length == (uint64_t) -1) | |
1400 | break; | |
1401 | } | |
1402 | } | |
1403 | } | |
1404 | /* seek back */ | |
1405 | avio_seek(matroska->ctx->pb, before_pos, SEEK_SET); | |
1406 | matroska->level_up = level_up; | |
1407 | matroska->current_id = saved_id; | |
1408 | ||
1409 | return ret; | |
1410 | } | |
1411 | ||
1412 | static void matroska_execute_seekhead(MatroskaDemuxContext *matroska) | |
1413 | { | |
1414 | EbmlList *seekhead_list = &matroska->seekhead; | |
1415 | int64_t before_pos = avio_tell(matroska->ctx->pb); | |
1416 | int i; | |
1417 | ||
1418 | // we should not do any seeking in the streaming case | |
1419 | if (!matroska->ctx->pb->seekable || | |
1420 | (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)) | |
1421 | return; | |
1422 | ||
1423 | for (i = 0; i < seekhead_list->nb_elem; i++) { | |
1424 | MatroskaSeekhead *seekhead = seekhead_list->elem; | |
1425 | if (seekhead[i].pos <= before_pos) | |
1426 | continue; | |
1427 | ||
1428 | // defer cues parsing until we actually need cue data. | |
1429 | if (seekhead[i].id == MATROSKA_ID_CUES) { | |
1430 | matroska->cues_parsing_deferred = 1; | |
1431 | continue; | |
1432 | } | |
1433 | ||
1434 | if (matroska_parse_seekhead_entry(matroska, i) < 0) { | |
1435 | // mark index as broken | |
1436 | matroska->cues_parsing_deferred = -1; | |
1437 | break; | |
1438 | } | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | static void matroska_add_index_entries(MatroskaDemuxContext *matroska) | |
1443 | { | |
1444 | EbmlList *index_list; | |
1445 | MatroskaIndex *index; | |
1446 | int index_scale = 1; | |
1447 | int i, j; | |
1448 | ||
1449 | index_list = &matroska->index; | |
1450 | index = index_list->elem; | |
1451 | if (index_list->nb_elem && | |
1452 | index[0].time > 1E14 / matroska->time_scale) { | |
1453 | av_log(matroska->ctx, AV_LOG_WARNING, "Working around broken index.\n"); | |
1454 | index_scale = matroska->time_scale; | |
1455 | } | |
1456 | for (i = 0; i < index_list->nb_elem; i++) { | |
1457 | EbmlList *pos_list = &index[i].pos; | |
1458 | MatroskaIndexPos *pos = pos_list->elem; | |
1459 | for (j = 0; j < pos_list->nb_elem; j++) { | |
1460 | MatroskaTrack *track = matroska_find_track_by_num(matroska, | |
1461 | pos[j].track); | |
1462 | if (track && track->stream) | |
1463 | av_add_index_entry(track->stream, | |
1464 | pos[j].pos + matroska->segment_start, | |
1465 | index[i].time / index_scale, 0, 0, | |
1466 | AVINDEX_KEYFRAME); | |
1467 | } | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | static void matroska_parse_cues(MatroskaDemuxContext *matroska) { | |
1472 | EbmlList *seekhead_list = &matroska->seekhead; | |
1473 | MatroskaSeekhead *seekhead = seekhead_list->elem; | |
1474 | int i; | |
1475 | ||
1476 | for (i = 0; i < seekhead_list->nb_elem; i++) | |
1477 | if (seekhead[i].id == MATROSKA_ID_CUES) | |
1478 | break; | |
1479 | av_assert1(i <= seekhead_list->nb_elem); | |
1480 | ||
1481 | if (matroska_parse_seekhead_entry(matroska, i) < 0) | |
1482 | matroska->cues_parsing_deferred = -1; | |
1483 | matroska_add_index_entries(matroska); | |
1484 | } | |
1485 | ||
1486 | static int matroska_aac_profile(char *codec_id) | |
1487 | { | |
1488 | static const char *const aac_profiles[] = { "MAIN", "LC", "SSR" }; | |
1489 | int profile; | |
1490 | ||
1491 | for (profile = 0; profile < FF_ARRAY_ELEMS(aac_profiles); profile++) | |
1492 | if (strstr(codec_id, aac_profiles[profile])) | |
1493 | break; | |
1494 | return profile + 1; | |
1495 | } | |
1496 | ||
1497 | static int matroska_aac_sri(int samplerate) | |
1498 | { | |
1499 | int sri; | |
1500 | ||
1501 | for (sri = 0; sri < FF_ARRAY_ELEMS(avpriv_mpeg4audio_sample_rates); sri++) | |
1502 | if (avpriv_mpeg4audio_sample_rates[sri] == samplerate) | |
1503 | break; | |
1504 | return sri; | |
1505 | } | |
1506 | ||
1507 | static void matroska_metadata_creation_time(AVDictionary **metadata, int64_t date_utc) | |
1508 | { | |
1509 | char buffer[32]; | |
1510 | /* Convert to seconds and adjust by number of seconds between 2001-01-01 and Epoch */ | |
1511 | time_t creation_time = date_utc / 1000000000 + 978307200; | |
f6fa7814 | 1512 | struct tm tmpbuf, *ptm = gmtime_r(&creation_time, &tmpbuf); |
2ba45a60 | 1513 | if (!ptm) return; |
f6fa7814 DM |
1514 | if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm)) |
1515 | av_dict_set(metadata, "creation_time", buffer, 0); | |
2ba45a60 DM |
1516 | } |
1517 | ||
1518 | static int matroska_parse_flac(AVFormatContext *s, | |
1519 | MatroskaTrack *track, | |
1520 | int *offset) | |
1521 | { | |
1522 | AVStream *st = track->stream; | |
1523 | uint8_t *p = track->codec_priv.data; | |
1524 | int size = track->codec_priv.size; | |
1525 | ||
1526 | if (size < 8 + FLAC_STREAMINFO_SIZE || p[4] & 0x7f) { | |
1527 | av_log(s, AV_LOG_WARNING, "Invalid FLAC private data\n"); | |
1528 | track->codec_priv.size = 0; | |
1529 | return 0; | |
1530 | } | |
1531 | *offset = 8; | |
1532 | track->codec_priv.size = 8 + FLAC_STREAMINFO_SIZE; | |
1533 | ||
1534 | p += track->codec_priv.size; | |
1535 | size -= track->codec_priv.size; | |
1536 | ||
1537 | /* parse the remaining metadata blocks if present */ | |
1538 | while (size >= 4) { | |
1539 | int block_last, block_type, block_size; | |
1540 | ||
1541 | flac_parse_block_header(p, &block_last, &block_type, &block_size); | |
1542 | ||
1543 | p += 4; | |
1544 | size -= 4; | |
1545 | if (block_size > size) | |
1546 | return 0; | |
1547 | ||
1548 | /* check for the channel mask */ | |
1549 | if (block_type == FLAC_METADATA_TYPE_VORBIS_COMMENT) { | |
1550 | AVDictionary *dict = NULL; | |
1551 | AVDictionaryEntry *chmask; | |
1552 | ||
1553 | ff_vorbis_comment(s, &dict, p, block_size, 0); | |
1554 | chmask = av_dict_get(dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", NULL, 0); | |
1555 | if (chmask) { | |
1556 | uint64_t mask = strtol(chmask->value, NULL, 0); | |
1557 | if (!mask || mask & ~0x3ffffULL) { | |
1558 | av_log(s, AV_LOG_WARNING, | |
1559 | "Invalid value of WAVEFORMATEXTENSIBLE_CHANNEL_MASK\n"); | |
1560 | } else | |
1561 | st->codec->channel_layout = mask; | |
1562 | } | |
1563 | av_dict_free(&dict); | |
1564 | } | |
1565 | ||
1566 | p += block_size; | |
1567 | size -= block_size; | |
1568 | } | |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | static int matroska_parse_tracks(AVFormatContext *s) | |
1574 | { | |
1575 | MatroskaDemuxContext *matroska = s->priv_data; | |
1576 | MatroskaTrack *tracks = matroska->tracks.elem; | |
1577 | AVStream *st; | |
1578 | int i, j, ret; | |
1579 | int k; | |
1580 | ||
1581 | for (i = 0; i < matroska->tracks.nb_elem; i++) { | |
1582 | MatroskaTrack *track = &tracks[i]; | |
1583 | enum AVCodecID codec_id = AV_CODEC_ID_NONE; | |
1584 | EbmlList *encodings_list = &track->encodings; | |
1585 | MatroskaTrackEncoding *encodings = encodings_list->elem; | |
1586 | uint8_t *extradata = NULL; | |
1587 | int extradata_size = 0; | |
1588 | int extradata_offset = 0; | |
1589 | uint32_t fourcc = 0; | |
1590 | AVIOContext b; | |
1591 | char* key_id_base64 = NULL; | |
1592 | int bit_depth = -1; | |
1593 | ||
1594 | /* Apply some sanity checks. */ | |
1595 | if (track->type != MATROSKA_TRACK_TYPE_VIDEO && | |
1596 | track->type != MATROSKA_TRACK_TYPE_AUDIO && | |
1597 | track->type != MATROSKA_TRACK_TYPE_SUBTITLE && | |
1598 | track->type != MATROSKA_TRACK_TYPE_METADATA) { | |
1599 | av_log(matroska->ctx, AV_LOG_INFO, | |
1600 | "Unknown or unsupported track type %"PRIu64"\n", | |
1601 | track->type); | |
1602 | continue; | |
1603 | } | |
1604 | if (!track->codec_id) | |
1605 | continue; | |
1606 | ||
1607 | if (track->type == MATROSKA_TRACK_TYPE_VIDEO) { | |
1608 | if (!track->default_duration && track->video.frame_rate > 0) | |
1609 | track->default_duration = 1000000000 / track->video.frame_rate; | |
1610 | if (track->video.display_width == -1) | |
1611 | track->video.display_width = track->video.pixel_width; | |
1612 | if (track->video.display_height == -1) | |
1613 | track->video.display_height = track->video.pixel_height; | |
1614 | if (track->video.color_space.size == 4) | |
1615 | fourcc = AV_RL32(track->video.color_space.data); | |
1616 | } else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) { | |
1617 | if (!track->audio.out_samplerate) | |
1618 | track->audio.out_samplerate = track->audio.samplerate; | |
1619 | } | |
1620 | if (encodings_list->nb_elem > 1) { | |
1621 | av_log(matroska->ctx, AV_LOG_ERROR, | |
1622 | "Multiple combined encodings not supported"); | |
1623 | } else if (encodings_list->nb_elem == 1) { | |
1624 | if (encodings[0].type) { | |
1625 | if (encodings[0].encryption.key_id.size > 0) { | |
1626 | /* Save the encryption key id to be stored later as a | |
1627 | metadata tag. */ | |
1628 | const int b64_size = AV_BASE64_SIZE(encodings[0].encryption.key_id.size); | |
1629 | key_id_base64 = av_malloc(b64_size); | |
1630 | if (key_id_base64 == NULL) | |
1631 | return AVERROR(ENOMEM); | |
1632 | ||
1633 | av_base64_encode(key_id_base64, b64_size, | |
1634 | encodings[0].encryption.key_id.data, | |
1635 | encodings[0].encryption.key_id.size); | |
1636 | } else { | |
1637 | encodings[0].scope = 0; | |
1638 | av_log(matroska->ctx, AV_LOG_ERROR, | |
1639 | "Unsupported encoding type"); | |
1640 | } | |
1641 | } else if ( | |
1642 | #if CONFIG_ZLIB | |
1643 | encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_ZLIB && | |
1644 | #endif | |
1645 | #if CONFIG_BZLIB | |
1646 | encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_BZLIB && | |
1647 | #endif | |
1648 | #if CONFIG_LZO | |
1649 | encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_LZO && | |
1650 | #endif | |
1651 | encodings[0].compression.algo != MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP) { | |
1652 | encodings[0].scope = 0; | |
1653 | av_log(matroska->ctx, AV_LOG_ERROR, | |
1654 | "Unsupported encoding type"); | |
1655 | } else if (track->codec_priv.size && encodings[0].scope & 2) { | |
1656 | uint8_t *codec_priv = track->codec_priv.data; | |
1657 | int ret = matroska_decode_buffer(&track->codec_priv.data, | |
1658 | &track->codec_priv.size, | |
1659 | track); | |
1660 | if (ret < 0) { | |
1661 | track->codec_priv.data = NULL; | |
1662 | track->codec_priv.size = 0; | |
1663 | av_log(matroska->ctx, AV_LOG_ERROR, | |
1664 | "Failed to decode codec private data\n"); | |
1665 | } | |
1666 | ||
1667 | if (codec_priv != track->codec_priv.data) | |
1668 | av_free(codec_priv); | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) { | |
1673 | if (!strncmp(ff_mkv_codec_tags[j].str, track->codec_id, | |
1674 | strlen(ff_mkv_codec_tags[j].str))) { | |
1675 | codec_id = ff_mkv_codec_tags[j].id; | |
1676 | break; | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | st = track->stream = avformat_new_stream(s, NULL); | |
1681 | if (!st) { | |
1682 | av_free(key_id_base64); | |
1683 | return AVERROR(ENOMEM); | |
1684 | } | |
1685 | ||
1686 | if (key_id_base64) { | |
1687 | /* export encryption key id as base64 metadata tag */ | |
1688 | av_dict_set(&st->metadata, "enc_key_id", key_id_base64, 0); | |
1689 | av_freep(&key_id_base64); | |
1690 | } | |
1691 | ||
1692 | if (!strcmp(track->codec_id, "V_MS/VFW/FOURCC") && | |
1693 | track->codec_priv.size >= 40 && | |
1694 | track->codec_priv.data) { | |
1695 | track->ms_compat = 1; | |
1696 | bit_depth = AV_RL16(track->codec_priv.data + 14); | |
1697 | fourcc = AV_RL32(track->codec_priv.data + 16); | |
1698 | codec_id = ff_codec_get_id(ff_codec_bmp_tags, | |
1699 | fourcc); | |
1700 | if (!codec_id) | |
1701 | codec_id = ff_codec_get_id(ff_codec_movvideo_tags, | |
1702 | fourcc); | |
1703 | extradata_offset = 40; | |
1704 | } else if (!strcmp(track->codec_id, "A_MS/ACM") && | |
1705 | track->codec_priv.size >= 14 && | |
1706 | track->codec_priv.data) { | |
1707 | int ret; | |
1708 | ffio_init_context(&b, track->codec_priv.data, | |
1709 | track->codec_priv.size, | |
1710 | 0, NULL, NULL, NULL, NULL); | |
1711 | ret = ff_get_wav_header(&b, st->codec, track->codec_priv.size); | |
1712 | if (ret < 0) | |
1713 | return ret; | |
1714 | codec_id = st->codec->codec_id; | |
1715 | extradata_offset = FFMIN(track->codec_priv.size, 18); | |
1716 | } else if (!strcmp(track->codec_id, "A_QUICKTIME") | |
1717 | && (track->codec_priv.size >= 86) | |
1718 | && (track->codec_priv.data)) { | |
1719 | fourcc = AV_RL32(track->codec_priv.data + 4); | |
1720 | codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc); | |
1721 | if (ff_codec_get_id(ff_codec_movaudio_tags, AV_RL32(track->codec_priv.data))) { | |
1722 | fourcc = AV_RL32(track->codec_priv.data); | |
1723 | codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc); | |
1724 | } | |
1725 | } else if (!strcmp(track->codec_id, "V_QUICKTIME") && | |
1726 | (track->codec_priv.size >= 21) && | |
1727 | (track->codec_priv.data)) { | |
1728 | fourcc = AV_RL32(track->codec_priv.data + 4); | |
1729 | codec_id = ff_codec_get_id(ff_codec_movvideo_tags, fourcc); | |
1730 | if (ff_codec_get_id(ff_codec_movvideo_tags, AV_RL32(track->codec_priv.data))) { | |
1731 | fourcc = AV_RL32(track->codec_priv.data); | |
1732 | codec_id = ff_codec_get_id(ff_codec_movvideo_tags, fourcc); | |
1733 | } | |
1734 | if (codec_id == AV_CODEC_ID_NONE && AV_RL32(track->codec_priv.data+4) == AV_RL32("SMI ")) | |
1735 | codec_id = AV_CODEC_ID_SVQ3; | |
1736 | } else if (codec_id == AV_CODEC_ID_PCM_S16BE) { | |
1737 | switch (track->audio.bitdepth) { | |
1738 | case 8: | |
1739 | codec_id = AV_CODEC_ID_PCM_U8; | |
1740 | break; | |
1741 | case 24: | |
1742 | codec_id = AV_CODEC_ID_PCM_S24BE; | |
1743 | break; | |
1744 | case 32: | |
1745 | codec_id = AV_CODEC_ID_PCM_S32BE; | |
1746 | break; | |
1747 | } | |
1748 | } else if (codec_id == AV_CODEC_ID_PCM_S16LE) { | |
1749 | switch (track->audio.bitdepth) { | |
1750 | case 8: | |
1751 | codec_id = AV_CODEC_ID_PCM_U8; | |
1752 | break; | |
1753 | case 24: | |
1754 | codec_id = AV_CODEC_ID_PCM_S24LE; | |
1755 | break; | |
1756 | case 32: | |
1757 | codec_id = AV_CODEC_ID_PCM_S32LE; | |
1758 | break; | |
1759 | } | |
1760 | } else if (codec_id == AV_CODEC_ID_PCM_F32LE && | |
1761 | track->audio.bitdepth == 64) { | |
1762 | codec_id = AV_CODEC_ID_PCM_F64LE; | |
1763 | } else if (codec_id == AV_CODEC_ID_AAC && !track->codec_priv.size) { | |
1764 | int profile = matroska_aac_profile(track->codec_id); | |
1765 | int sri = matroska_aac_sri(track->audio.samplerate); | |
1766 | extradata = av_mallocz(5 + FF_INPUT_BUFFER_PADDING_SIZE); | |
1767 | if (!extradata) | |
1768 | return AVERROR(ENOMEM); | |
1769 | extradata[0] = (profile << 3) | ((sri & 0x0E) >> 1); | |
1770 | extradata[1] = ((sri & 0x01) << 7) | (track->audio.channels << 3); | |
1771 | if (strstr(track->codec_id, "SBR")) { | |
1772 | sri = matroska_aac_sri(track->audio.out_samplerate); | |
1773 | extradata[2] = 0x56; | |
1774 | extradata[3] = 0xE5; | |
1775 | extradata[4] = 0x80 | (sri << 3); | |
1776 | extradata_size = 5; | |
1777 | } else | |
1778 | extradata_size = 2; | |
1779 | } else if (codec_id == AV_CODEC_ID_ALAC && track->codec_priv.size && track->codec_priv.size < INT_MAX - 12 - FF_INPUT_BUFFER_PADDING_SIZE) { | |
1780 | /* Only ALAC's magic cookie is stored in Matroska's track headers. | |
1781 | * Create the "atom size", "tag", and "tag version" fields the | |
1782 | * decoder expects manually. */ | |
1783 | extradata_size = 12 + track->codec_priv.size; | |
1784 | extradata = av_mallocz(extradata_size + | |
1785 | FF_INPUT_BUFFER_PADDING_SIZE); | |
1786 | if (!extradata) | |
1787 | return AVERROR(ENOMEM); | |
1788 | AV_WB32(extradata, extradata_size); | |
1789 | memcpy(&extradata[4], "alac", 4); | |
1790 | AV_WB32(&extradata[8], 0); | |
1791 | memcpy(&extradata[12], track->codec_priv.data, | |
1792 | track->codec_priv.size); | |
1793 | } else if (codec_id == AV_CODEC_ID_TTA) { | |
1794 | extradata_size = 30; | |
1795 | extradata = av_mallocz(extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); | |
1796 | if (!extradata) | |
1797 | return AVERROR(ENOMEM); | |
1798 | ffio_init_context(&b, extradata, extradata_size, 1, | |
1799 | NULL, NULL, NULL, NULL); | |
1800 | avio_write(&b, "TTA1", 4); | |
1801 | avio_wl16(&b, 1); | |
1802 | avio_wl16(&b, track->audio.channels); | |
1803 | avio_wl16(&b, track->audio.bitdepth); | |
1804 | if (track->audio.out_samplerate < 0 || track->audio.out_samplerate > INT_MAX) | |
1805 | return AVERROR_INVALIDDATA; | |
1806 | avio_wl32(&b, track->audio.out_samplerate); | |
1807 | avio_wl32(&b, av_rescale((matroska->duration * matroska->time_scale), | |
1808 | track->audio.out_samplerate, | |
1809 | AV_TIME_BASE * 1000)); | |
1810 | } else if (codec_id == AV_CODEC_ID_RV10 || | |
1811 | codec_id == AV_CODEC_ID_RV20 || | |
1812 | codec_id == AV_CODEC_ID_RV30 || | |
1813 | codec_id == AV_CODEC_ID_RV40) { | |
1814 | extradata_offset = 26; | |
1815 | } else if (codec_id == AV_CODEC_ID_RA_144) { | |
1816 | track->audio.out_samplerate = 8000; | |
1817 | track->audio.channels = 1; | |
1818 | } else if ((codec_id == AV_CODEC_ID_RA_288 || | |
1819 | codec_id == AV_CODEC_ID_COOK || | |
1820 | codec_id == AV_CODEC_ID_ATRAC3 || | |
1821 | codec_id == AV_CODEC_ID_SIPR) | |
1822 | && track->codec_priv.data) { | |
1823 | int flavor; | |
1824 | ||
1825 | ffio_init_context(&b, track->codec_priv.data, | |
1826 | track->codec_priv.size, | |
1827 | 0, NULL, NULL, NULL, NULL); | |
1828 | avio_skip(&b, 22); | |
1829 | flavor = avio_rb16(&b); | |
1830 | track->audio.coded_framesize = avio_rb32(&b); | |
1831 | avio_skip(&b, 12); | |
1832 | track->audio.sub_packet_h = avio_rb16(&b); | |
1833 | track->audio.frame_size = avio_rb16(&b); | |
1834 | track->audio.sub_packet_size = avio_rb16(&b); | |
1835 | if (flavor < 0 || | |
1836 | track->audio.coded_framesize <= 0 || | |
1837 | track->audio.sub_packet_h <= 0 || | |
1838 | track->audio.frame_size <= 0 || | |
1839 | track->audio.sub_packet_size <= 0) | |
1840 | return AVERROR_INVALIDDATA; | |
1841 | track->audio.buf = av_malloc_array(track->audio.sub_packet_h, | |
1842 | track->audio.frame_size); | |
1843 | if (!track->audio.buf) | |
1844 | return AVERROR(ENOMEM); | |
1845 | if (codec_id == AV_CODEC_ID_RA_288) { | |
1846 | st->codec->block_align = track->audio.coded_framesize; | |
1847 | track->codec_priv.size = 0; | |
1848 | } else { | |
1849 | if (codec_id == AV_CODEC_ID_SIPR && flavor < 4) { | |
1850 | static const int sipr_bit_rate[4] = { 6504, 8496, 5000, 16000 }; | |
1851 | track->audio.sub_packet_size = ff_sipr_subpk_size[flavor]; | |
1852 | st->codec->bit_rate = sipr_bit_rate[flavor]; | |
1853 | } | |
1854 | st->codec->block_align = track->audio.sub_packet_size; | |
1855 | extradata_offset = 78; | |
1856 | } | |
1857 | } else if (codec_id == AV_CODEC_ID_FLAC && track->codec_priv.size) { | |
1858 | ret = matroska_parse_flac(s, track, &extradata_offset); | |
1859 | if (ret < 0) | |
1860 | return ret; | |
1861 | } else if (codec_id == AV_CODEC_ID_PRORES && track->codec_priv.size == 4) { | |
1862 | fourcc = AV_RL32(track->codec_priv.data); | |
1863 | } | |
1864 | track->codec_priv.size -= extradata_offset; | |
1865 | ||
1866 | if (codec_id == AV_CODEC_ID_NONE) | |
1867 | av_log(matroska->ctx, AV_LOG_INFO, | |
1868 | "Unknown/unsupported AVCodecID %s.\n", track->codec_id); | |
1869 | ||
1870 | if (track->time_scale < 0.01) | |
1871 | track->time_scale = 1.0; | |
1872 | avpriv_set_pts_info(st, 64, matroska->time_scale * track->time_scale, | |
1873 | 1000 * 1000 * 1000); /* 64 bit pts in ns */ | |
1874 | ||
1875 | /* convert the delay from ns to the track timebase */ | |
1876 | track->codec_delay = av_rescale_q(track->codec_delay, | |
1877 | (AVRational){ 1, 1000000000 }, | |
1878 | st->time_base); | |
1879 | ||
1880 | st->codec->codec_id = codec_id; | |
1881 | ||
1882 | if (strcmp(track->language, "und")) | |
1883 | av_dict_set(&st->metadata, "language", track->language, 0); | |
1884 | av_dict_set(&st->metadata, "title", track->name, 0); | |
1885 | ||
1886 | if (track->flag_default) | |
1887 | st->disposition |= AV_DISPOSITION_DEFAULT; | |
1888 | if (track->flag_forced) | |
1889 | st->disposition |= AV_DISPOSITION_FORCED; | |
1890 | ||
1891 | if (!st->codec->extradata) { | |
1892 | if (extradata) { | |
1893 | st->codec->extradata = extradata; | |
1894 | st->codec->extradata_size = extradata_size; | |
1895 | } else if (track->codec_priv.data && track->codec_priv.size > 0) { | |
1896 | if (ff_alloc_extradata(st->codec, track->codec_priv.size)) | |
1897 | return AVERROR(ENOMEM); | |
1898 | memcpy(st->codec->extradata, | |
1899 | track->codec_priv.data + extradata_offset, | |
1900 | track->codec_priv.size); | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | if (track->type == MATROSKA_TRACK_TYPE_VIDEO) { | |
1905 | MatroskaTrackPlane *planes = track->operation.combine_planes.elem; | |
1906 | ||
1907 | st->codec->codec_type = AVMEDIA_TYPE_VIDEO; | |
1908 | st->codec->codec_tag = fourcc; | |
1909 | if (bit_depth >= 0) | |
1910 | st->codec->bits_per_coded_sample = bit_depth; | |
1911 | st->codec->width = track->video.pixel_width; | |
1912 | st->codec->height = track->video.pixel_height; | |
1913 | av_reduce(&st->sample_aspect_ratio.num, | |
1914 | &st->sample_aspect_ratio.den, | |
1915 | st->codec->height * track->video.display_width, | |
1916 | st->codec->width * track->video.display_height, | |
1917 | 255); | |
1918 | if (st->codec->codec_id != AV_CODEC_ID_HEVC) | |
1919 | st->need_parsing = AVSTREAM_PARSE_HEADERS; | |
1920 | ||
1921 | if (track->default_duration) { | |
1922 | av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, | |
1923 | 1000000000, track->default_duration, 30000); | |
1924 | #if FF_API_R_FRAME_RATE | |
1925 | if ( st->avg_frame_rate.num < st->avg_frame_rate.den * 1000L | |
1926 | && st->avg_frame_rate.num > st->avg_frame_rate.den * 5L) | |
1927 | st->r_frame_rate = st->avg_frame_rate; | |
1928 | #endif | |
1929 | } | |
1930 | ||
1931 | /* export stereo mode flag as metadata tag */ | |
1932 | if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB) | |
1933 | av_dict_set(&st->metadata, "stereo_mode", ff_matroska_video_stereo_mode[track->video.stereo_mode], 0); | |
1934 | ||
1935 | /* export alpha mode flag as metadata tag */ | |
1936 | if (track->video.alpha_mode) | |
1937 | av_dict_set(&st->metadata, "alpha_mode", "1", 0); | |
1938 | ||
1939 | /* if we have virtual track, mark the real tracks */ | |
1940 | for (j=0; j < track->operation.combine_planes.nb_elem; j++) { | |
1941 | char buf[32]; | |
1942 | if (planes[j].type >= MATROSKA_VIDEO_STEREO_PLANE_COUNT) | |
1943 | continue; | |
1944 | snprintf(buf, sizeof(buf), "%s_%d", | |
1945 | ff_matroska_video_stereo_plane[planes[j].type], i); | |
1946 | for (k=0; k < matroska->tracks.nb_elem; k++) | |
1947 | if (planes[j].uid == tracks[k].uid) { | |
1948 | av_dict_set(&s->streams[k]->metadata, | |
1949 | "stereo_mode", buf, 0); | |
1950 | break; | |
1951 | } | |
1952 | } | |
1953 | // add stream level stereo3d side data if it is a supported format | |
1954 | if (track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB && | |
1955 | track->video.stereo_mode != 10 && track->video.stereo_mode != 12) { | |
1956 | int ret = ff_mkv_stereo3d_conv(st, track->video.stereo_mode); | |
1957 | if (ret < 0) | |
1958 | return ret; | |
1959 | } | |
1960 | } else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) { | |
1961 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; | |
1962 | st->codec->sample_rate = track->audio.out_samplerate; | |
1963 | st->codec->channels = track->audio.channels; | |
1964 | if (!st->codec->bits_per_coded_sample) | |
1965 | st->codec->bits_per_coded_sample = track->audio.bitdepth; | |
1966 | if (st->codec->codec_id != AV_CODEC_ID_AAC) | |
1967 | st->need_parsing = AVSTREAM_PARSE_HEADERS; | |
1968 | if (track->codec_delay > 0) { | |
1969 | st->codec->delay = av_rescale_q(track->codec_delay, | |
1970 | st->time_base, | |
1971 | (AVRational){1, st->codec->sample_rate}); | |
1972 | } | |
1973 | if (track->seek_preroll > 0) { | |
1974 | av_codec_set_seek_preroll(st->codec, | |
1975 | av_rescale_q(track->seek_preroll, | |
1976 | (AVRational){1, 1000000000}, | |
1977 | (AVRational){1, st->codec->sample_rate})); | |
1978 | } | |
1979 | } else if (codec_id == AV_CODEC_ID_WEBVTT) { | |
1980 | st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; | |
1981 | ||
1982 | if (!strcmp(track->codec_id, "D_WEBVTT/CAPTIONS")) { | |
1983 | st->disposition |= AV_DISPOSITION_CAPTIONS; | |
1984 | } else if (!strcmp(track->codec_id, "D_WEBVTT/DESCRIPTIONS")) { | |
1985 | st->disposition |= AV_DISPOSITION_DESCRIPTIONS; | |
1986 | } else if (!strcmp(track->codec_id, "D_WEBVTT/METADATA")) { | |
1987 | st->disposition |= AV_DISPOSITION_METADATA; | |
1988 | } | |
1989 | } else if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE) { | |
1990 | st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; | |
1991 | if (st->codec->codec_id == AV_CODEC_ID_ASS) | |
1992 | matroska->contains_ssa = 1; | |
1993 | } | |
1994 | } | |
1995 | ||
1996 | return 0; | |
1997 | } | |
1998 | ||
1999 | static int matroska_read_header(AVFormatContext *s) | |
2000 | { | |
2001 | MatroskaDemuxContext *matroska = s->priv_data; | |
2002 | EbmlList *attachments_list = &matroska->attachments; | |
2003 | EbmlList *chapters_list = &matroska->chapters; | |
2004 | MatroskaAttachment *attachments; | |
2005 | MatroskaChapter *chapters; | |
2006 | uint64_t max_start = 0; | |
2007 | int64_t pos; | |
2008 | Ebml ebml = { 0 }; | |
2009 | int i, j, res; | |
2010 | ||
2011 | matroska->ctx = s; | |
2012 | ||
2013 | /* First read the EBML header. */ | |
2014 | if (ebml_parse(matroska, ebml_syntax, &ebml) || | |
2015 | ebml.version > EBML_VERSION || | |
2016 | ebml.max_size > sizeof(uint64_t) || | |
2017 | ebml.id_length > sizeof(uint32_t) || | |
2018 | ebml.doctype_version > 3 || | |
2019 | !ebml.doctype) { | |
2020 | av_log(matroska->ctx, AV_LOG_ERROR, | |
2021 | "EBML header using unsupported features\n" | |
2022 | "(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n", | |
2023 | ebml.version, ebml.doctype, ebml.doctype_version); | |
2024 | ebml_free(ebml_syntax, &ebml); | |
2025 | return AVERROR_PATCHWELCOME; | |
2026 | } else if (ebml.doctype_version == 3) { | |
2027 | av_log(matroska->ctx, AV_LOG_WARNING, | |
2028 | "EBML header using unsupported features\n" | |
2029 | "(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n", | |
2030 | ebml.version, ebml.doctype, ebml.doctype_version); | |
2031 | } | |
2032 | for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++) | |
2033 | if (!strcmp(ebml.doctype, matroska_doctypes[i])) | |
2034 | break; | |
2035 | if (i >= FF_ARRAY_ELEMS(matroska_doctypes)) { | |
2036 | av_log(s, AV_LOG_WARNING, "Unknown EBML doctype '%s'\n", ebml.doctype); | |
2037 | if (matroska->ctx->error_recognition & AV_EF_EXPLODE) { | |
2038 | ebml_free(ebml_syntax, &ebml); | |
2039 | return AVERROR_INVALIDDATA; | |
2040 | } | |
2041 | } | |
2042 | ebml_free(ebml_syntax, &ebml); | |
2043 | ||
2044 | /* The next thing is a segment. */ | |
2045 | pos = avio_tell(matroska->ctx->pb); | |
2046 | res = ebml_parse(matroska, matroska_segments, matroska); | |
2047 | // try resyncing until we find a EBML_STOP type element. | |
2048 | while (res != 1) { | |
2049 | res = matroska_resync(matroska, pos); | |
2050 | if (res < 0) | |
2051 | return res; | |
2052 | pos = avio_tell(matroska->ctx->pb); | |
2053 | res = ebml_parse(matroska, matroska_segment, matroska); | |
2054 | } | |
2055 | matroska_execute_seekhead(matroska); | |
2056 | ||
2057 | if (!matroska->time_scale) | |
2058 | matroska->time_scale = 1000000; | |
2059 | if (matroska->duration) | |
2060 | matroska->ctx->duration = matroska->duration * matroska->time_scale * | |
2061 | 1000 / AV_TIME_BASE; | |
2062 | av_dict_set(&s->metadata, "title", matroska->title, 0); | |
2063 | av_dict_set(&s->metadata, "encoder", matroska->muxingapp, 0); | |
2064 | ||
2065 | if (matroska->date_utc.size == 8) | |
2066 | matroska_metadata_creation_time(&s->metadata, AV_RB64(matroska->date_utc.data)); | |
2067 | ||
2068 | res = matroska_parse_tracks(s); | |
2069 | if (res < 0) | |
2070 | return res; | |
2071 | ||
2072 | attachments = attachments_list->elem; | |
2073 | for (j = 0; j < attachments_list->nb_elem; j++) { | |
2074 | if (!(attachments[j].filename && attachments[j].mime && | |
2075 | attachments[j].bin.data && attachments[j].bin.size > 0)) { | |
2076 | av_log(matroska->ctx, AV_LOG_ERROR, "incomplete attachment\n"); | |
2077 | } else { | |
2078 | AVStream *st = avformat_new_stream(s, NULL); | |
2079 | if (!st) | |
2080 | break; | |
2081 | av_dict_set(&st->metadata, "filename", attachments[j].filename, 0); | |
2082 | av_dict_set(&st->metadata, "mimetype", attachments[j].mime, 0); | |
2083 | st->codec->codec_id = AV_CODEC_ID_NONE; | |
2084 | st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT; | |
2085 | if (ff_alloc_extradata(st->codec, attachments[j].bin.size)) | |
2086 | break; | |
2087 | memcpy(st->codec->extradata, attachments[j].bin.data, | |
2088 | attachments[j].bin.size); | |
2089 | ||
2090 | for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++) { | |
2091 | if (!strncmp(ff_mkv_mime_tags[i].str, attachments[j].mime, | |
2092 | strlen(ff_mkv_mime_tags[i].str))) { | |
2093 | st->codec->codec_id = ff_mkv_mime_tags[i].id; | |
2094 | break; | |
2095 | } | |
2096 | } | |
2097 | attachments[j].stream = st; | |
2098 | } | |
2099 | } | |
2100 | ||
2101 | chapters = chapters_list->elem; | |
2102 | for (i = 0; i < chapters_list->nb_elem; i++) | |
2103 | if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid && | |
2104 | (max_start == 0 || chapters[i].start > max_start)) { | |
2105 | chapters[i].chapter = | |
2106 | avpriv_new_chapter(s, chapters[i].uid, | |
2107 | (AVRational) { 1, 1000000000 }, | |
2108 | chapters[i].start, chapters[i].end, | |
2109 | chapters[i].title); | |
2110 | if (chapters[i].chapter) { | |
2111 | av_dict_set(&chapters[i].chapter->metadata, | |
2112 | "title", chapters[i].title, 0); | |
2113 | } | |
2114 | max_start = chapters[i].start; | |
2115 | } | |
2116 | ||
2117 | matroska_add_index_entries(matroska); | |
2118 | ||
2119 | matroska_convert_tags(s); | |
2120 | ||
2121 | return 0; | |
2122 | } | |
2123 | ||
2124 | /* | |
2125 | * Put one packet in an application-supplied AVPacket struct. | |
2126 | * Returns 0 on success or -1 on failure. | |
2127 | */ | |
2128 | static int matroska_deliver_packet(MatroskaDemuxContext *matroska, | |
2129 | AVPacket *pkt) | |
2130 | { | |
2131 | if (matroska->num_packets > 0) { | |
2132 | memcpy(pkt, matroska->packets[0], sizeof(AVPacket)); | |
2133 | av_free(matroska->packets[0]); | |
2134 | if (matroska->num_packets > 1) { | |
2135 | void *newpackets; | |
2136 | memmove(&matroska->packets[0], &matroska->packets[1], | |
2137 | (matroska->num_packets - 1) * sizeof(AVPacket *)); | |
2138 | newpackets = av_realloc(matroska->packets, | |
2139 | (matroska->num_packets - 1) * | |
2140 | sizeof(AVPacket *)); | |
2141 | if (newpackets) | |
2142 | matroska->packets = newpackets; | |
2143 | } else { | |
2144 | av_freep(&matroska->packets); | |
2145 | matroska->prev_pkt = NULL; | |
2146 | } | |
2147 | matroska->num_packets--; | |
2148 | return 0; | |
2149 | } | |
2150 | ||
2151 | return -1; | |
2152 | } | |
2153 | ||
2154 | /* | |
2155 | * Free all packets in our internal queue. | |
2156 | */ | |
2157 | static void matroska_clear_queue(MatroskaDemuxContext *matroska) | |
2158 | { | |
2159 | matroska->prev_pkt = NULL; | |
2160 | if (matroska->packets) { | |
2161 | int n; | |
2162 | for (n = 0; n < matroska->num_packets; n++) { | |
2163 | av_free_packet(matroska->packets[n]); | |
2164 | av_free(matroska->packets[n]); | |
2165 | } | |
2166 | av_freep(&matroska->packets); | |
2167 | matroska->num_packets = 0; | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, | |
2172 | int *buf_size, int type, | |
2173 | uint32_t **lace_buf, int *laces) | |
2174 | { | |
2175 | int res = 0, n, size = *buf_size; | |
2176 | uint8_t *data = *buf; | |
2177 | uint32_t *lace_size; | |
2178 | ||
2179 | if (!type) { | |
2180 | *laces = 1; | |
2181 | *lace_buf = av_mallocz(sizeof(int)); | |
2182 | if (!*lace_buf) | |
2183 | return AVERROR(ENOMEM); | |
2184 | ||
2185 | *lace_buf[0] = size; | |
2186 | return 0; | |
2187 | } | |
2188 | ||
2189 | av_assert0(size > 0); | |
2190 | *laces = *data + 1; | |
2191 | data += 1; | |
2192 | size -= 1; | |
2193 | lace_size = av_mallocz(*laces * sizeof(int)); | |
2194 | if (!lace_size) | |
2195 | return AVERROR(ENOMEM); | |
2196 | ||
2197 | switch (type) { | |
2198 | case 0x1: /* Xiph lacing */ | |
2199 | { | |
2200 | uint8_t temp; | |
2201 | uint32_t total = 0; | |
2202 | for (n = 0; res == 0 && n < *laces - 1; n++) { | |
2203 | while (1) { | |
2204 | if (size <= total) { | |
2205 | res = AVERROR_INVALIDDATA; | |
2206 | break; | |
2207 | } | |
2208 | temp = *data; | |
2209 | total += temp; | |
2210 | lace_size[n] += temp; | |
2211 | data += 1; | |
2212 | size -= 1; | |
2213 | if (temp != 0xff) | |
2214 | break; | |
2215 | } | |
2216 | } | |
2217 | if (size <= total) { | |
2218 | res = AVERROR_INVALIDDATA; | |
2219 | break; | |
2220 | } | |
2221 | ||
2222 | lace_size[n] = size - total; | |
2223 | break; | |
2224 | } | |
2225 | ||
2226 | case 0x2: /* fixed-size lacing */ | |
2227 | if (size % (*laces)) { | |
2228 | res = AVERROR_INVALIDDATA; | |
2229 | break; | |
2230 | } | |
2231 | for (n = 0; n < *laces; n++) | |
2232 | lace_size[n] = size / *laces; | |
2233 | break; | |
2234 | ||
2235 | case 0x3: /* EBML lacing */ | |
2236 | { | |
2237 | uint64_t num; | |
2238 | uint64_t total; | |
2239 | n = matroska_ebmlnum_uint(matroska, data, size, &num); | |
2240 | if (n < 0 || num > INT_MAX) { | |
2241 | av_log(matroska->ctx, AV_LOG_INFO, | |
2242 | "EBML block data error\n"); | |
2243 | res = n<0 ? n : AVERROR_INVALIDDATA; | |
2244 | break; | |
2245 | } | |
2246 | data += n; | |
2247 | size -= n; | |
2248 | total = lace_size[0] = num; | |
2249 | for (n = 1; res == 0 && n < *laces - 1; n++) { | |
2250 | int64_t snum; | |
2251 | int r; | |
2252 | r = matroska_ebmlnum_sint(matroska, data, size, &snum); | |
2253 | if (r < 0 || lace_size[n - 1] + snum > (uint64_t)INT_MAX) { | |
2254 | av_log(matroska->ctx, AV_LOG_INFO, | |
2255 | "EBML block data error\n"); | |
2256 | res = r<0 ? r : AVERROR_INVALIDDATA; | |
2257 | break; | |
2258 | } | |
2259 | data += r; | |
2260 | size -= r; | |
2261 | lace_size[n] = lace_size[n - 1] + snum; | |
2262 | total += lace_size[n]; | |
2263 | } | |
2264 | if (size <= total) { | |
2265 | res = AVERROR_INVALIDDATA; | |
2266 | break; | |
2267 | } | |
2268 | lace_size[*laces - 1] = size - total; | |
2269 | break; | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | *buf = data; | |
2274 | *lace_buf = lace_size; | |
2275 | *buf_size = size; | |
2276 | ||
2277 | return res; | |
2278 | } | |
2279 | ||
2280 | static int matroska_parse_rm_audio(MatroskaDemuxContext *matroska, | |
2281 | MatroskaTrack *track, AVStream *st, | |
2282 | uint8_t *data, int size, uint64_t timecode, | |
2283 | int64_t pos) | |
2284 | { | |
2285 | int a = st->codec->block_align; | |
2286 | int sps = track->audio.sub_packet_size; | |
2287 | int cfs = track->audio.coded_framesize; | |
2288 | int h = track->audio.sub_packet_h; | |
2289 | int y = track->audio.sub_packet_cnt; | |
2290 | int w = track->audio.frame_size; | |
2291 | int x; | |
2292 | ||
2293 | if (!track->audio.pkt_cnt) { | |
2294 | if (track->audio.sub_packet_cnt == 0) | |
2295 | track->audio.buf_timecode = timecode; | |
2296 | if (st->codec->codec_id == AV_CODEC_ID_RA_288) { | |
2297 | if (size < cfs * h / 2) { | |
2298 | av_log(matroska->ctx, AV_LOG_ERROR, | |
2299 | "Corrupt int4 RM-style audio packet size\n"); | |
2300 | return AVERROR_INVALIDDATA; | |
2301 | } | |
2302 | for (x = 0; x < h / 2; x++) | |
2303 | memcpy(track->audio.buf + x * 2 * w + y * cfs, | |
2304 | data + x * cfs, cfs); | |
2305 | } else if (st->codec->codec_id == AV_CODEC_ID_SIPR) { | |
2306 | if (size < w) { | |
2307 | av_log(matroska->ctx, AV_LOG_ERROR, | |
2308 | "Corrupt sipr RM-style audio packet size\n"); | |
2309 | return AVERROR_INVALIDDATA; | |
2310 | } | |
2311 | memcpy(track->audio.buf + y * w, data, w); | |
2312 | } else { | |
2313 | if (size < sps * w / sps || h<=0 || w%sps) { | |
2314 | av_log(matroska->ctx, AV_LOG_ERROR, | |
2315 | "Corrupt generic RM-style audio packet size\n"); | |
2316 | return AVERROR_INVALIDDATA; | |
2317 | } | |
2318 | for (x = 0; x < w / sps; x++) | |
2319 | memcpy(track->audio.buf + | |
2320 | sps * (h * x + ((h + 1) / 2) * (y & 1) + (y >> 1)), | |
2321 | data + x * sps, sps); | |
2322 | } | |
2323 | ||
2324 | if (++track->audio.sub_packet_cnt >= h) { | |
2325 | if (st->codec->codec_id == AV_CODEC_ID_SIPR) | |
2326 | ff_rm_reorder_sipr_data(track->audio.buf, h, w); | |
2327 | track->audio.sub_packet_cnt = 0; | |
2328 | track->audio.pkt_cnt = h * w / a; | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | while (track->audio.pkt_cnt) { | |
f6fa7814 DM |
2333 | int ret; |
2334 | AVPacket *pkt = av_mallocz(sizeof(AVPacket)); | |
2335 | if (!pkt) | |
2ba45a60 | 2336 | return AVERROR(ENOMEM); |
f6fa7814 DM |
2337 | |
2338 | ret = av_new_packet(pkt, a); | |
2339 | if (ret < 0) { | |
2340 | av_free(pkt); | |
2341 | return ret; | |
2ba45a60 DM |
2342 | } |
2343 | memcpy(pkt->data, | |
2344 | track->audio.buf + a * (h * w / a - track->audio.pkt_cnt--), | |
2345 | a); | |
2346 | pkt->pts = track->audio.buf_timecode; | |
2347 | track->audio.buf_timecode = AV_NOPTS_VALUE; | |
2348 | pkt->pos = pos; | |
2349 | pkt->stream_index = st->index; | |
2350 | dynarray_add(&matroska->packets, &matroska->num_packets, pkt); | |
2351 | } | |
2352 | ||
2353 | return 0; | |
2354 | } | |
2355 | ||
2356 | /* reconstruct full wavpack blocks from mangled matroska ones */ | |
2357 | static int matroska_parse_wavpack(MatroskaTrack *track, uint8_t *src, | |
2358 | uint8_t **pdst, int *size) | |
2359 | { | |
2360 | uint8_t *dst = NULL; | |
2361 | int dstlen = 0; | |
2362 | int srclen = *size; | |
2363 | uint32_t samples; | |
2364 | uint16_t ver; | |
2365 | int ret, offset = 0; | |
2366 | ||
2367 | if (srclen < 12 || track->stream->codec->extradata_size < 2) | |
2368 | return AVERROR_INVALIDDATA; | |
2369 | ||
2370 | ver = AV_RL16(track->stream->codec->extradata); | |
2371 | ||
2372 | samples = AV_RL32(src); | |
2373 | src += 4; | |
2374 | srclen -= 4; | |
2375 | ||
2376 | while (srclen >= 8) { | |
2377 | int multiblock; | |
2378 | uint32_t blocksize; | |
2379 | uint8_t *tmp; | |
2380 | ||
2381 | uint32_t flags = AV_RL32(src); | |
2382 | uint32_t crc = AV_RL32(src + 4); | |
2383 | src += 8; | |
2384 | srclen -= 8; | |
2385 | ||
2386 | multiblock = (flags & 0x1800) != 0x1800; | |
2387 | if (multiblock) { | |
2388 | if (srclen < 4) { | |
2389 | ret = AVERROR_INVALIDDATA; | |
2390 | goto fail; | |
2391 | } | |
2392 | blocksize = AV_RL32(src); | |
2393 | src += 4; | |
2394 | srclen -= 4; | |
2395 | } else | |
2396 | blocksize = srclen; | |
2397 | ||
2398 | if (blocksize > srclen) { | |
2399 | ret = AVERROR_INVALIDDATA; | |
2400 | goto fail; | |
2401 | } | |
2402 | ||
2403 | tmp = av_realloc(dst, dstlen + blocksize + 32); | |
2404 | if (!tmp) { | |
2405 | ret = AVERROR(ENOMEM); | |
2406 | goto fail; | |
2407 | } | |
2408 | dst = tmp; | |
2409 | dstlen += blocksize + 32; | |
2410 | ||
2411 | AV_WL32(dst + offset, MKTAG('w', 'v', 'p', 'k')); // tag | |
2412 | AV_WL32(dst + offset + 4, blocksize + 24); // blocksize - 8 | |
2413 | AV_WL16(dst + offset + 8, ver); // version | |
2414 | AV_WL16(dst + offset + 10, 0); // track/index_no | |
2415 | AV_WL32(dst + offset + 12, 0); // total samples | |
2416 | AV_WL32(dst + offset + 16, 0); // block index | |
2417 | AV_WL32(dst + offset + 20, samples); // number of samples | |
2418 | AV_WL32(dst + offset + 24, flags); // flags | |
2419 | AV_WL32(dst + offset + 28, crc); // crc | |
2420 | memcpy(dst + offset + 32, src, blocksize); // block data | |
2421 | ||
2422 | src += blocksize; | |
2423 | srclen -= blocksize; | |
2424 | offset += blocksize + 32; | |
2425 | } | |
2426 | ||
2427 | *pdst = dst; | |
2428 | *size = dstlen; | |
2429 | ||
2430 | return 0; | |
2431 | ||
2432 | fail: | |
2433 | av_freep(&dst); | |
2434 | return ret; | |
2435 | } | |
2436 | ||
2437 | static int matroska_parse_webvtt(MatroskaDemuxContext *matroska, | |
2438 | MatroskaTrack *track, | |
2439 | AVStream *st, | |
2440 | uint8_t *data, int data_len, | |
2441 | uint64_t timecode, | |
2442 | uint64_t duration, | |
2443 | int64_t pos) | |
2444 | { | |
2445 | AVPacket *pkt; | |
2446 | uint8_t *id, *settings, *text, *buf; | |
2447 | int id_len, settings_len, text_len; | |
2448 | uint8_t *p, *q; | |
2449 | int err; | |
2450 | ||
2451 | if (data_len <= 0) | |
2452 | return AVERROR_INVALIDDATA; | |
2453 | ||
2454 | p = data; | |
2455 | q = data + data_len; | |
2456 | ||
2457 | id = p; | |
2458 | id_len = -1; | |
2459 | while (p < q) { | |
2460 | if (*p == '\r' || *p == '\n') { | |
2461 | id_len = p - id; | |
2462 | if (*p == '\r') | |
2463 | p++; | |
2464 | break; | |
2465 | } | |
2466 | p++; | |
2467 | } | |
2468 | ||
2469 | if (p >= q || *p != '\n') | |
2470 | return AVERROR_INVALIDDATA; | |
2471 | p++; | |
2472 | ||
2473 | settings = p; | |
2474 | settings_len = -1; | |
2475 | while (p < q) { | |
2476 | if (*p == '\r' || *p == '\n') { | |
2477 | settings_len = p - settings; | |
2478 | if (*p == '\r') | |
2479 | p++; | |
2480 | break; | |
2481 | } | |
2482 | p++; | |
2483 | } | |
2484 | ||
2485 | if (p >= q || *p != '\n') | |
2486 | return AVERROR_INVALIDDATA; | |
2487 | p++; | |
2488 | ||
2489 | text = p; | |
2490 | text_len = q - p; | |
2491 | while (text_len > 0) { | |
2492 | const int len = text_len - 1; | |
2493 | const uint8_t c = p[len]; | |
2494 | if (c != '\r' && c != '\n') | |
2495 | break; | |
2496 | text_len = len; | |
2497 | } | |
2498 | ||
2499 | if (text_len <= 0) | |
2500 | return AVERROR_INVALIDDATA; | |
2501 | ||
2502 | pkt = av_mallocz(sizeof(*pkt)); | |
2503 | err = av_new_packet(pkt, text_len); | |
2504 | if (err < 0) { | |
2505 | av_free(pkt); | |
2506 | return AVERROR(err); | |
2507 | } | |
2508 | ||
2509 | memcpy(pkt->data, text, text_len); | |
2510 | ||
2511 | if (id_len > 0) { | |
2512 | buf = av_packet_new_side_data(pkt, | |
2513 | AV_PKT_DATA_WEBVTT_IDENTIFIER, | |
2514 | id_len); | |
2515 | if (!buf) { | |
2516 | av_free(pkt); | |
2517 | return AVERROR(ENOMEM); | |
2518 | } | |
2519 | memcpy(buf, id, id_len); | |
2520 | } | |
2521 | ||
2522 | if (settings_len > 0) { | |
2523 | buf = av_packet_new_side_data(pkt, | |
2524 | AV_PKT_DATA_WEBVTT_SETTINGS, | |
2525 | settings_len); | |
2526 | if (!buf) { | |
2527 | av_free(pkt); | |
2528 | return AVERROR(ENOMEM); | |
2529 | } | |
2530 | memcpy(buf, settings, settings_len); | |
2531 | } | |
2532 | ||
2533 | // Do we need this for subtitles? | |
2534 | // pkt->flags = AV_PKT_FLAG_KEY; | |
2535 | ||
2536 | pkt->stream_index = st->index; | |
2537 | pkt->pts = timecode; | |
2538 | ||
2539 | // Do we need this for subtitles? | |
2540 | // pkt->dts = timecode; | |
2541 | ||
2542 | pkt->duration = duration; | |
2543 | pkt->pos = pos; | |
2544 | ||
2545 | dynarray_add(&matroska->packets, &matroska->num_packets, pkt); | |
2546 | matroska->prev_pkt = pkt; | |
2547 | ||
2548 | return 0; | |
2549 | } | |
2550 | ||
2551 | static int matroska_parse_frame(MatroskaDemuxContext *matroska, | |
2552 | MatroskaTrack *track, AVStream *st, | |
2553 | uint8_t *data, int pkt_size, | |
2554 | uint64_t timecode, uint64_t lace_duration, | |
2555 | int64_t pos, int is_keyframe, | |
2556 | uint8_t *additional, uint64_t additional_id, int additional_size, | |
2557 | int64_t discard_padding) | |
2558 | { | |
2559 | MatroskaTrackEncoding *encodings = track->encodings.elem; | |
2560 | uint8_t *pkt_data = data; | |
2561 | int offset = 0, res; | |
2562 | AVPacket *pkt; | |
2563 | ||
2564 | if (encodings && !encodings->type && encodings->scope & 1) { | |
2565 | res = matroska_decode_buffer(&pkt_data, &pkt_size, track); | |
2566 | if (res < 0) | |
2567 | return res; | |
2568 | } | |
2569 | ||
2570 | if (st->codec->codec_id == AV_CODEC_ID_WAVPACK) { | |
2571 | uint8_t *wv_data; | |
2572 | res = matroska_parse_wavpack(track, pkt_data, &wv_data, &pkt_size); | |
2573 | if (res < 0) { | |
2574 | av_log(matroska->ctx, AV_LOG_ERROR, | |
2575 | "Error parsing a wavpack block.\n"); | |
2576 | goto fail; | |
2577 | } | |
2578 | if (pkt_data != data) | |
2579 | av_freep(&pkt_data); | |
2580 | pkt_data = wv_data; | |
2581 | } | |
2582 | ||
2583 | if (st->codec->codec_id == AV_CODEC_ID_PRORES && | |
2584 | AV_RB32(&data[4]) != MKBETAG('i', 'c', 'p', 'f')) | |
2585 | offset = 8; | |
2586 | ||
2587 | pkt = av_mallocz(sizeof(AVPacket)); | |
2588 | /* XXX: prevent data copy... */ | |
2589 | if (av_new_packet(pkt, pkt_size + offset) < 0) { | |
2590 | av_free(pkt); | |
2591 | res = AVERROR(ENOMEM); | |
2592 | goto fail; | |
2593 | } | |
2594 | ||
2595 | if (st->codec->codec_id == AV_CODEC_ID_PRORES && offset == 8) { | |
2596 | uint8_t *buf = pkt->data; | |
2597 | bytestream_put_be32(&buf, pkt_size); | |
2598 | bytestream_put_be32(&buf, MKBETAG('i', 'c', 'p', 'f')); | |
2599 | } | |
2600 | ||
2601 | memcpy(pkt->data + offset, pkt_data, pkt_size); | |
2602 | ||
2603 | if (pkt_data != data) | |
2604 | av_freep(&pkt_data); | |
2605 | ||
2606 | pkt->flags = is_keyframe; | |
2607 | pkt->stream_index = st->index; | |
2608 | ||
2609 | if (additional_size > 0) { | |
2610 | uint8_t *side_data = av_packet_new_side_data(pkt, | |
2611 | AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, | |
2612 | additional_size + 8); | |
2613 | if (!side_data) { | |
2614 | av_free_packet(pkt); | |
2615 | av_free(pkt); | |
2616 | return AVERROR(ENOMEM); | |
2617 | } | |
2618 | AV_WB64(side_data, additional_id); | |
2619 | memcpy(side_data + 8, additional, additional_size); | |
2620 | } | |
2621 | ||
2622 | if (discard_padding) { | |
2623 | uint8_t *side_data = av_packet_new_side_data(pkt, | |
2624 | AV_PKT_DATA_SKIP_SAMPLES, | |
2625 | 10); | |
2626 | if (!side_data) { | |
2627 | av_free_packet(pkt); | |
2628 | av_free(pkt); | |
2629 | return AVERROR(ENOMEM); | |
2630 | } | |
2631 | AV_WL32(side_data, 0); | |
2632 | AV_WL32(side_data + 4, av_rescale_q(discard_padding, | |
2633 | (AVRational){1, 1000000000}, | |
2634 | (AVRational){1, st->codec->sample_rate})); | |
2635 | } | |
2636 | ||
2637 | if (track->ms_compat) | |
2638 | pkt->dts = timecode; | |
2639 | else | |
2640 | pkt->pts = timecode; | |
2641 | pkt->pos = pos; | |
2642 | if (st->codec->codec_id == AV_CODEC_ID_SUBRIP) { | |
2643 | /* | |
2644 | * For backward compatibility. | |
2645 | * Historically, we have put subtitle duration | |
2646 | * in convergence_duration, on the off chance | |
2647 | * that the time_scale is less than 1us, which | |
2648 | * could result in a 32bit overflow on the | |
2649 | * normal duration field. | |
2650 | */ | |
2651 | pkt->convergence_duration = lace_duration; | |
2652 | } | |
2653 | ||
2654 | if (track->type != MATROSKA_TRACK_TYPE_SUBTITLE || | |
2655 | lace_duration <= INT_MAX) { | |
2656 | /* | |
2657 | * For non subtitle tracks, just store the duration | |
2658 | * as normal. | |
2659 | * | |
2660 | * If it's a subtitle track and duration value does | |
2661 | * not overflow a uint32, then also store it normally. | |
2662 | */ | |
2663 | pkt->duration = lace_duration; | |
2664 | } | |
2665 | ||
2666 | dynarray_add(&matroska->packets, &matroska->num_packets, pkt); | |
2667 | matroska->prev_pkt = pkt; | |
2668 | ||
2669 | return 0; | |
2670 | ||
2671 | fail: | |
2672 | if (pkt_data != data) | |
2673 | av_freep(&pkt_data); | |
2674 | return res; | |
2675 | } | |
2676 | ||
2677 | static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, | |
2678 | int size, int64_t pos, uint64_t cluster_time, | |
2679 | uint64_t block_duration, int is_keyframe, | |
2680 | uint8_t *additional, uint64_t additional_id, int additional_size, | |
2681 | int64_t cluster_pos, int64_t discard_padding) | |
2682 | { | |
2683 | uint64_t timecode = AV_NOPTS_VALUE; | |
2684 | MatroskaTrack *track; | |
2685 | int res = 0; | |
2686 | AVStream *st; | |
2687 | int16_t block_time; | |
2688 | uint32_t *lace_size = NULL; | |
2689 | int n, flags, laces = 0; | |
2690 | uint64_t num; | |
2691 | int trust_default_duration = 1; | |
2692 | ||
2693 | if ((n = matroska_ebmlnum_uint(matroska, data, size, &num)) < 0) { | |
2694 | av_log(matroska->ctx, AV_LOG_ERROR, "EBML block data error\n"); | |
2695 | return n; | |
2696 | } | |
2697 | data += n; | |
2698 | size -= n; | |
2699 | ||
2700 | track = matroska_find_track_by_num(matroska, num); | |
2701 | if (!track || !track->stream) { | |
2702 | av_log(matroska->ctx, AV_LOG_INFO, | |
2703 | "Invalid stream %"PRIu64" or size %u\n", num, size); | |
2704 | return AVERROR_INVALIDDATA; | |
2705 | } else if (size <= 3) | |
2706 | return 0; | |
2707 | st = track->stream; | |
2708 | if (st->discard >= AVDISCARD_ALL) | |
2709 | return res; | |
2710 | av_assert1(block_duration != AV_NOPTS_VALUE); | |
2711 | ||
2712 | block_time = sign_extend(AV_RB16(data), 16); | |
2713 | data += 2; | |
2714 | flags = *data++; | |
2715 | size -= 3; | |
2716 | if (is_keyframe == -1) | |
2717 | is_keyframe = flags & 0x80 ? AV_PKT_FLAG_KEY : 0; | |
2718 | ||
2719 | if (cluster_time != (uint64_t) -1 && | |
2720 | (block_time >= 0 || cluster_time >= -block_time)) { | |
2721 | timecode = cluster_time + block_time - track->codec_delay; | |
2722 | if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE && | |
2723 | timecode < track->end_timecode) | |
2724 | is_keyframe = 0; /* overlapping subtitles are not key frame */ | |
2725 | if (is_keyframe) | |
2726 | av_add_index_entry(st, cluster_pos, timecode, 0, 0, | |
2727 | AVINDEX_KEYFRAME); | |
2728 | } | |
2729 | ||
2730 | if (matroska->skip_to_keyframe && | |
2731 | track->type != MATROSKA_TRACK_TYPE_SUBTITLE) { | |
2732 | if (timecode < matroska->skip_to_timecode) | |
2733 | return res; | |
2734 | if (is_keyframe) | |
2735 | matroska->skip_to_keyframe = 0; | |
2736 | else if (!st->skip_to_keyframe) { | |
2737 | av_log(matroska->ctx, AV_LOG_ERROR, "File is broken, keyframes not correctly marked!\n"); | |
2738 | matroska->skip_to_keyframe = 0; | |
2739 | } | |
2740 | } | |
2741 | ||
2742 | res = matroska_parse_laces(matroska, &data, &size, (flags & 0x06) >> 1, | |
2743 | &lace_size, &laces); | |
2744 | ||
2745 | if (res) | |
2746 | goto end; | |
2747 | ||
2748 | if (track->audio.samplerate == 8000) { | |
2749 | // If this is needed for more codecs, then add them here | |
2750 | if (st->codec->codec_id == AV_CODEC_ID_AC3) { | |
2751 | if (track->audio.samplerate != st->codec->sample_rate || !st->codec->frame_size) | |
2752 | trust_default_duration = 0; | |
2753 | } | |
2754 | } | |
2755 | ||
2756 | if (!block_duration && trust_default_duration) | |
2757 | block_duration = track->default_duration * laces / matroska->time_scale; | |
2758 | ||
2759 | if (cluster_time != (uint64_t)-1 && (block_time >= 0 || cluster_time >= -block_time)) | |
2760 | track->end_timecode = | |
2761 | FFMAX(track->end_timecode, timecode + block_duration); | |
2762 | ||
2763 | for (n = 0; n < laces; n++) { | |
2764 | int64_t lace_duration = block_duration*(n+1) / laces - block_duration*n / laces; | |
2765 | ||
2766 | if (lace_size[n] > size) { | |
2767 | av_log(matroska->ctx, AV_LOG_ERROR, "Invalid packet size\n"); | |
2768 | break; | |
2769 | } | |
2770 | ||
2771 | if ((st->codec->codec_id == AV_CODEC_ID_RA_288 || | |
2772 | st->codec->codec_id == AV_CODEC_ID_COOK || | |
2773 | st->codec->codec_id == AV_CODEC_ID_SIPR || | |
2774 | st->codec->codec_id == AV_CODEC_ID_ATRAC3) && | |
2775 | st->codec->block_align && track->audio.sub_packet_size) { | |
2776 | res = matroska_parse_rm_audio(matroska, track, st, data, | |
2777 | lace_size[n], | |
2778 | timecode, pos); | |
2779 | if (res) | |
2780 | goto end; | |
2781 | ||
2782 | } else if (st->codec->codec_id == AV_CODEC_ID_WEBVTT) { | |
2783 | res = matroska_parse_webvtt(matroska, track, st, | |
2784 | data, lace_size[n], | |
2785 | timecode, lace_duration, | |
2786 | pos); | |
2787 | if (res) | |
2788 | goto end; | |
2789 | } else { | |
2790 | res = matroska_parse_frame(matroska, track, st, data, lace_size[n], | |
2791 | timecode, lace_duration, pos, | |
2792 | !n ? is_keyframe : 0, | |
2793 | additional, additional_id, additional_size, | |
2794 | discard_padding); | |
2795 | if (res) | |
2796 | goto end; | |
2797 | } | |
2798 | ||
2799 | if (timecode != AV_NOPTS_VALUE) | |
2800 | timecode = lace_duration ? timecode + lace_duration : AV_NOPTS_VALUE; | |
2801 | data += lace_size[n]; | |
2802 | size -= lace_size[n]; | |
2803 | } | |
2804 | ||
2805 | end: | |
2806 | av_free(lace_size); | |
2807 | return res; | |
2808 | } | |
2809 | ||
2810 | static int matroska_parse_cluster_incremental(MatroskaDemuxContext *matroska) | |
2811 | { | |
2812 | EbmlList *blocks_list; | |
2813 | MatroskaBlock *blocks; | |
2814 | int i, res; | |
2815 | res = ebml_parse(matroska, | |
2816 | matroska_cluster_incremental_parsing, | |
2817 | &matroska->current_cluster); | |
2818 | if (res == 1) { | |
2819 | /* New Cluster */ | |
2820 | if (matroska->current_cluster_pos) | |
2821 | ebml_level_end(matroska); | |
2822 | ebml_free(matroska_cluster, &matroska->current_cluster); | |
2823 | memset(&matroska->current_cluster, 0, sizeof(MatroskaCluster)); | |
2824 | matroska->current_cluster_num_blocks = 0; | |
2825 | matroska->current_cluster_pos = avio_tell(matroska->ctx->pb); | |
2826 | matroska->prev_pkt = NULL; | |
2827 | /* sizeof the ID which was already read */ | |
2828 | if (matroska->current_id) | |
2829 | matroska->current_cluster_pos -= 4; | |
2830 | res = ebml_parse(matroska, | |
2831 | matroska_clusters_incremental, | |
2832 | &matroska->current_cluster); | |
2833 | /* Try parsing the block again. */ | |
2834 | if (res == 1) | |
2835 | res = ebml_parse(matroska, | |
2836 | matroska_cluster_incremental_parsing, | |
2837 | &matroska->current_cluster); | |
2838 | } | |
2839 | ||
2840 | if (!res && | |
2841 | matroska->current_cluster_num_blocks < | |
2842 | matroska->current_cluster.blocks.nb_elem) { | |
2843 | blocks_list = &matroska->current_cluster.blocks; | |
2844 | blocks = blocks_list->elem; | |
2845 | ||
2846 | matroska->current_cluster_num_blocks = blocks_list->nb_elem; | |
2847 | i = blocks_list->nb_elem - 1; | |
2848 | if (blocks[i].bin.size > 0 && blocks[i].bin.data) { | |
2849 | int is_keyframe = blocks[i].non_simple ? !blocks[i].reference : -1; | |
2850 | uint8_t* additional = blocks[i].additional.size > 0 ? | |
2851 | blocks[i].additional.data : NULL; | |
2852 | if (!blocks[i].non_simple) | |
2853 | blocks[i].duration = 0; | |
2854 | res = matroska_parse_block(matroska, blocks[i].bin.data, | |
2855 | blocks[i].bin.size, blocks[i].bin.pos, | |
2856 | matroska->current_cluster.timecode, | |
2857 | blocks[i].duration, is_keyframe, | |
2858 | additional, blocks[i].additional_id, | |
2859 | blocks[i].additional.size, | |
2860 | matroska->current_cluster_pos, | |
2861 | blocks[i].discard_padding); | |
2862 | } | |
2863 | } | |
2864 | ||
2865 | return res; | |
2866 | } | |
2867 | ||
2868 | static int matroska_parse_cluster(MatroskaDemuxContext *matroska) | |
2869 | { | |
2870 | MatroskaCluster cluster = { 0 }; | |
2871 | EbmlList *blocks_list; | |
2872 | MatroskaBlock *blocks; | |
2873 | int i, res; | |
2874 | int64_t pos; | |
2875 | ||
2876 | if (!matroska->contains_ssa) | |
2877 | return matroska_parse_cluster_incremental(matroska); | |
2878 | pos = avio_tell(matroska->ctx->pb); | |
2879 | matroska->prev_pkt = NULL; | |
2880 | if (matroska->current_id) | |
2881 | pos -= 4; /* sizeof the ID which was already read */ | |
2882 | res = ebml_parse(matroska, matroska_clusters, &cluster); | |
2883 | blocks_list = &cluster.blocks; | |
2884 | blocks = blocks_list->elem; | |
2885 | for (i = 0; i < blocks_list->nb_elem; i++) | |
2886 | if (blocks[i].bin.size > 0 && blocks[i].bin.data) { | |
2887 | int is_keyframe = blocks[i].non_simple ? !blocks[i].reference : -1; | |
2888 | res = matroska_parse_block(matroska, blocks[i].bin.data, | |
2889 | blocks[i].bin.size, blocks[i].bin.pos, | |
2890 | cluster.timecode, blocks[i].duration, | |
2891 | is_keyframe, NULL, 0, 0, pos, | |
2892 | blocks[i].discard_padding); | |
2893 | } | |
2894 | ebml_free(matroska_cluster, &cluster); | |
2895 | return res; | |
2896 | } | |
2897 | ||
2898 | static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt) | |
2899 | { | |
2900 | MatroskaDemuxContext *matroska = s->priv_data; | |
2901 | ||
2902 | while (matroska_deliver_packet(matroska, pkt)) { | |
2903 | int64_t pos = avio_tell(matroska->ctx->pb); | |
2904 | if (matroska->done) | |
2905 | return AVERROR_EOF; | |
2906 | if (matroska_parse_cluster(matroska) < 0) | |
2907 | matroska_resync(matroska, pos); | |
2908 | } | |
2909 | ||
2910 | return 0; | |
2911 | } | |
2912 | ||
2913 | static int matroska_read_seek(AVFormatContext *s, int stream_index, | |
2914 | int64_t timestamp, int flags) | |
2915 | { | |
2916 | MatroskaDemuxContext *matroska = s->priv_data; | |
f6fa7814 | 2917 | MatroskaTrack *tracks = NULL; |
2ba45a60 DM |
2918 | AVStream *st = s->streams[stream_index]; |
2919 | int i, index, index_sub, index_min; | |
2920 | ||
2921 | /* Parse the CUES now since we need the index data to seek. */ | |
2922 | if (matroska->cues_parsing_deferred > 0) { | |
2923 | matroska->cues_parsing_deferred = 0; | |
2924 | matroska_parse_cues(matroska); | |
2925 | } | |
2926 | ||
2927 | if (!st->nb_index_entries) | |
2928 | goto err; | |
2929 | timestamp = FFMAX(timestamp, st->index_entries[0].timestamp); | |
2930 | ||
f6fa7814 | 2931 | if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 || index == st->nb_index_entries - 1) { |
2ba45a60 DM |
2932 | avio_seek(s->pb, st->index_entries[st->nb_index_entries - 1].pos, |
2933 | SEEK_SET); | |
2934 | matroska->current_id = 0; | |
f6fa7814 | 2935 | while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 || index == st->nb_index_entries - 1) { |
2ba45a60 DM |
2936 | matroska_clear_queue(matroska); |
2937 | if (matroska_parse_cluster(matroska) < 0) | |
2938 | break; | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | matroska_clear_queue(matroska); | |
2943 | if (index < 0 || (matroska->cues_parsing_deferred < 0 && index == st->nb_index_entries - 1)) | |
2944 | goto err; | |
2945 | ||
2946 | index_min = index; | |
f6fa7814 | 2947 | tracks = matroska->tracks.elem; |
2ba45a60 DM |
2948 | for (i = 0; i < matroska->tracks.nb_elem; i++) { |
2949 | tracks[i].audio.pkt_cnt = 0; | |
2950 | tracks[i].audio.sub_packet_cnt = 0; | |
2951 | tracks[i].audio.buf_timecode = AV_NOPTS_VALUE; | |
2952 | tracks[i].end_timecode = 0; | |
2953 | if (tracks[i].type == MATROSKA_TRACK_TYPE_SUBTITLE && | |
2954 | tracks[i].stream->discard != AVDISCARD_ALL) { | |
2955 | index_sub = av_index_search_timestamp( | |
2956 | tracks[i].stream, st->index_entries[index].timestamp, | |
2957 | AVSEEK_FLAG_BACKWARD); | |
2958 | while (index_sub >= 0 && | |
2959 | index_min > 0 && | |
2960 | tracks[i].stream->index_entries[index_sub].pos < st->index_entries[index_min].pos && | |
2961 | st->index_entries[index].timestamp - tracks[i].stream->index_entries[index_sub].timestamp < 30000000000 / matroska->time_scale) | |
2962 | index_min--; | |
2963 | } | |
2964 | } | |
2965 | ||
2966 | avio_seek(s->pb, st->index_entries[index_min].pos, SEEK_SET); | |
2967 | matroska->current_id = 0; | |
2968 | if (flags & AVSEEK_FLAG_ANY) { | |
2969 | st->skip_to_keyframe = 0; | |
2970 | matroska->skip_to_timecode = timestamp; | |
2971 | } else { | |
2972 | st->skip_to_keyframe = 1; | |
2973 | matroska->skip_to_timecode = st->index_entries[index].timestamp; | |
2974 | } | |
2975 | matroska->skip_to_keyframe = 1; | |
2976 | matroska->done = 0; | |
2977 | matroska->num_levels = 0; | |
2978 | ff_update_cur_dts(s, st, st->index_entries[index].timestamp); | |
2979 | return 0; | |
2980 | err: | |
2981 | // slightly hackish but allows proper fallback to | |
2982 | // the generic seeking code. | |
2983 | matroska_clear_queue(matroska); | |
2984 | matroska->current_id = 0; | |
2985 | st->skip_to_keyframe = | |
2986 | matroska->skip_to_keyframe = 0; | |
2987 | matroska->done = 0; | |
2988 | matroska->num_levels = 0; | |
2989 | return -1; | |
2990 | } | |
2991 | ||
2992 | static int matroska_read_close(AVFormatContext *s) | |
2993 | { | |
2994 | MatroskaDemuxContext *matroska = s->priv_data; | |
2995 | MatroskaTrack *tracks = matroska->tracks.elem; | |
2996 | int n; | |
2997 | ||
2998 | matroska_clear_queue(matroska); | |
2999 | ||
3000 | for (n = 0; n < matroska->tracks.nb_elem; n++) | |
3001 | if (tracks[n].type == MATROSKA_TRACK_TYPE_AUDIO) | |
3002 | av_free(tracks[n].audio.buf); | |
3003 | ebml_free(matroska_cluster, &matroska->current_cluster); | |
3004 | ebml_free(matroska_segment, matroska); | |
3005 | ||
3006 | return 0; | |
3007 | } | |
3008 | ||
3009 | typedef struct { | |
3010 | int64_t start_time_ns; | |
3011 | int64_t end_time_ns; | |
3012 | int64_t start_offset; | |
3013 | int64_t end_offset; | |
3014 | } CueDesc; | |
3015 | ||
3016 | /* This function searches all the Cues and returns the CueDesc corresponding the | |
3017 | * the timestamp ts. Returned CueDesc will be such that start_time_ns <= ts < | |
3018 | * end_time_ns. All 4 fields will be set to -1 if ts >= file's duration. | |
3019 | */ | |
3020 | static CueDesc get_cue_desc(AVFormatContext *s, int64_t ts, int64_t cues_start) { | |
3021 | MatroskaDemuxContext *matroska = s->priv_data; | |
3022 | CueDesc cue_desc; | |
3023 | int i; | |
3024 | int nb_index_entries = s->streams[0]->nb_index_entries; | |
3025 | AVIndexEntry *index_entries = s->streams[0]->index_entries; | |
3026 | if (ts >= matroska->duration * matroska->time_scale) return (CueDesc) {-1, -1, -1, -1}; | |
3027 | for (i = 1; i < nb_index_entries; i++) { | |
3028 | if (index_entries[i - 1].timestamp * matroska->time_scale <= ts && | |
3029 | index_entries[i].timestamp * matroska->time_scale > ts) { | |
3030 | break; | |
3031 | } | |
3032 | } | |
3033 | --i; | |
3034 | cue_desc.start_time_ns = index_entries[i].timestamp * matroska->time_scale; | |
3035 | cue_desc.start_offset = index_entries[i].pos - matroska->segment_start; | |
3036 | if (i != nb_index_entries - 1) { | |
3037 | cue_desc.end_time_ns = index_entries[i + 1].timestamp * matroska->time_scale; | |
3038 | cue_desc.end_offset = index_entries[i + 1].pos - matroska->segment_start; | |
3039 | } else { | |
3040 | cue_desc.end_time_ns = matroska->duration * matroska->time_scale; | |
3041 | // FIXME: this needs special handling for files where Cues appear | |
3042 | // before Clusters. the current logic assumes Cues appear after | |
3043 | // Clusters. | |
3044 | cue_desc.end_offset = cues_start - matroska->segment_start; | |
3045 | } | |
3046 | return cue_desc; | |
3047 | } | |
3048 | ||
3049 | static int webm_clusters_start_with_keyframe(AVFormatContext *s) | |
3050 | { | |
3051 | MatroskaDemuxContext *matroska = s->priv_data; | |
3052 | int64_t cluster_pos, before_pos; | |
3053 | int index, rv = 1; | |
3054 | if (s->streams[0]->nb_index_entries <= 0) return 0; | |
3055 | // seek to the first cluster using cues. | |
3056 | index = av_index_search_timestamp(s->streams[0], 0, 0); | |
3057 | if (index < 0) return 0; | |
3058 | cluster_pos = s->streams[0]->index_entries[index].pos; | |
3059 | before_pos = avio_tell(s->pb); | |
3060 | while (1) { | |
3061 | int64_t cluster_id = 0, cluster_length = 0; | |
3062 | AVPacket *pkt; | |
3063 | avio_seek(s->pb, cluster_pos, SEEK_SET); | |
3064 | // read cluster id and length | |
3065 | ebml_read_num(matroska, matroska->ctx->pb, 4, &cluster_id); | |
3066 | ebml_read_length(matroska, matroska->ctx->pb, &cluster_length); | |
3067 | if (cluster_id != 0xF43B675) { // done with all clusters | |
3068 | break; | |
3069 | } | |
3070 | avio_seek(s->pb, cluster_pos, SEEK_SET); | |
3071 | matroska->current_id = 0; | |
3072 | matroska_clear_queue(matroska); | |
3073 | if (matroska_parse_cluster(matroska) < 0 || | |
3074 | matroska->num_packets <= 0) { | |
3075 | break; | |
3076 | } | |
3077 | pkt = matroska->packets[0]; | |
3078 | cluster_pos += cluster_length + 12; // 12 is the offset of the cluster id and length. | |
3079 | if (!(pkt->flags & AV_PKT_FLAG_KEY)) { | |
3080 | rv = 0; | |
3081 | break; | |
3082 | } | |
3083 | } | |
3084 | avio_seek(s->pb, before_pos, SEEK_SET); | |
3085 | return rv; | |
3086 | } | |
3087 | ||
3088 | static int buffer_size_after_time_downloaded(int64_t time_ns, double search_sec, int64_t bps, | |
3089 | double min_buffer, double* buffer, | |
3090 | double* sec_to_download, AVFormatContext *s, | |
3091 | int64_t cues_start) | |
3092 | { | |
3093 | double nano_seconds_per_second = 1000000000.0; | |
3094 | double time_sec = time_ns / nano_seconds_per_second; | |
3095 | int rv = 0; | |
3096 | int64_t time_to_search_ns = (int64_t)(search_sec * nano_seconds_per_second); | |
3097 | int64_t end_time_ns = time_ns + time_to_search_ns; | |
3098 | double sec_downloaded = 0.0; | |
3099 | CueDesc desc_curr = get_cue_desc(s, time_ns, cues_start); | |
3100 | if (desc_curr.start_time_ns == -1) | |
3101 | return -1; | |
3102 | *sec_to_download = 0.0; | |
3103 | ||
3104 | // Check for non cue start time. | |
3105 | if (time_ns > desc_curr.start_time_ns) { | |
3106 | int64_t cue_nano = desc_curr.end_time_ns - time_ns; | |
3107 | double percent = (double)(cue_nano) / (desc_curr.end_time_ns - desc_curr.start_time_ns); | |
3108 | double cueBytes = (desc_curr.end_offset - desc_curr.start_offset) * percent; | |
3109 | double timeToDownload = (cueBytes * 8.0) / bps; | |
3110 | ||
3111 | sec_downloaded += (cue_nano / nano_seconds_per_second) - timeToDownload; | |
3112 | *sec_to_download += timeToDownload; | |
3113 | ||
3114 | // Check if the search ends within the first cue. | |
3115 | if (desc_curr.end_time_ns >= end_time_ns) { | |
3116 | double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second; | |
3117 | double percent_to_sub = search_sec / (desc_end_time_sec - time_sec); | |
3118 | sec_downloaded = percent_to_sub * sec_downloaded; | |
3119 | *sec_to_download = percent_to_sub * *sec_to_download; | |
3120 | } | |
3121 | ||
3122 | if ((sec_downloaded + *buffer) <= min_buffer) { | |
3123 | return 1; | |
3124 | } | |
3125 | ||
3126 | // Get the next Cue. | |
3127 | desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start); | |
3128 | } | |
3129 | ||
3130 | while (desc_curr.start_time_ns != -1) { | |
3131 | int64_t desc_bytes = desc_curr.end_offset - desc_curr.start_offset; | |
3132 | int64_t desc_ns = desc_curr.end_time_ns - desc_curr.start_time_ns; | |
3133 | double desc_sec = desc_ns / nano_seconds_per_second; | |
3134 | double bits = (desc_bytes * 8.0); | |
3135 | double time_to_download = bits / bps; | |
3136 | ||
3137 | sec_downloaded += desc_sec - time_to_download; | |
3138 | *sec_to_download += time_to_download; | |
3139 | ||
3140 | if (desc_curr.end_time_ns >= end_time_ns) { | |
3141 | double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second; | |
3142 | double percent_to_sub = search_sec / (desc_end_time_sec - time_sec); | |
3143 | sec_downloaded = percent_to_sub * sec_downloaded; | |
3144 | *sec_to_download = percent_to_sub * *sec_to_download; | |
3145 | ||
3146 | if ((sec_downloaded + *buffer) <= min_buffer) | |
3147 | rv = 1; | |
3148 | break; | |
3149 | } | |
3150 | ||
3151 | if ((sec_downloaded + *buffer) <= min_buffer) { | |
3152 | rv = 1; | |
3153 | break; | |
3154 | } | |
3155 | ||
3156 | desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start); | |
3157 | } | |
3158 | *buffer = *buffer + sec_downloaded; | |
3159 | return rv; | |
3160 | } | |
3161 | ||
3162 | /* This function computes the bandwidth of the WebM file with the help of | |
3163 | * buffer_size_after_time_downloaded() function. Both of these functions are | |
3164 | * adapted from WebM Tools project and are adapted to work with FFmpeg's | |
3165 | * Matroska parsing mechanism. | |
3166 | * | |
3167 | * Returns the bandwidth of the file on success; -1 on error. | |
3168 | * */ | |
3169 | static int64_t webm_dash_manifest_compute_bandwidth(AVFormatContext *s, int64_t cues_start) | |
3170 | { | |
3171 | MatroskaDemuxContext *matroska = s->priv_data; | |
3172 | AVStream *st = s->streams[0]; | |
3173 | double bandwidth = 0.0; | |
3174 | int i; | |
3175 | ||
3176 | for (i = 0; i < st->nb_index_entries; i++) { | |
3177 | int64_t prebuffer_ns = 1000000000; | |
3178 | int64_t time_ns = st->index_entries[i].timestamp * matroska->time_scale; | |
3179 | double nano_seconds_per_second = 1000000000.0; | |
3180 | int64_t prebuffered_ns = time_ns + prebuffer_ns; | |
3181 | double prebuffer_bytes = 0.0; | |
3182 | int64_t temp_prebuffer_ns = prebuffer_ns; | |
3183 | int64_t pre_bytes, pre_ns; | |
3184 | double pre_sec, prebuffer, bits_per_second; | |
3185 | CueDesc desc_beg = get_cue_desc(s, time_ns, cues_start); | |
3186 | ||
3187 | // Start with the first Cue. | |
3188 | CueDesc desc_end = desc_beg; | |
3189 | ||
3190 | // Figure out how much data we have downloaded for the prebuffer. This will | |
3191 | // be used later to adjust the bits per sample to try. | |
3192 | while (desc_end.start_time_ns != -1 && desc_end.end_time_ns < prebuffered_ns) { | |
3193 | // Prebuffered the entire Cue. | |
3194 | prebuffer_bytes += desc_end.end_offset - desc_end.start_offset; | |
3195 | temp_prebuffer_ns -= desc_end.end_time_ns - desc_end.start_time_ns; | |
3196 | desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start); | |
3197 | } | |
3198 | if (desc_end.start_time_ns == -1) { | |
3199 | // The prebuffer is larger than the duration. | |
f6fa7814 DM |
3200 | if (matroska->duration * matroska->time_scale >= prebuffered_ns) |
3201 | return -1; | |
3202 | bits_per_second = 0.0; | |
3203 | } else { | |
3204 | // The prebuffer ends in the last Cue. Estimate how much data was | |
3205 | // prebuffered. | |
3206 | pre_bytes = desc_end.end_offset - desc_end.start_offset; | |
3207 | pre_ns = desc_end.end_time_ns - desc_end.start_time_ns; | |
3208 | pre_sec = pre_ns / nano_seconds_per_second; | |
3209 | prebuffer_bytes += | |
3210 | pre_bytes * ((temp_prebuffer_ns / nano_seconds_per_second) / pre_sec); | |
3211 | ||
3212 | prebuffer = prebuffer_ns / nano_seconds_per_second; | |
3213 | ||
3214 | // Set this to 0.0 in case our prebuffer buffers the entire video. | |
3215 | bits_per_second = 0.0; | |
3216 | do { | |
3217 | int64_t desc_bytes = desc_end.end_offset - desc_beg.start_offset; | |
3218 | int64_t desc_ns = desc_end.end_time_ns - desc_beg.start_time_ns; | |
3219 | double desc_sec = desc_ns / nano_seconds_per_second; | |
3220 | double calc_bits_per_second = (desc_bytes * 8) / desc_sec; | |
3221 | ||
3222 | // Drop the bps by the percentage of bytes buffered. | |
3223 | double percent = (desc_bytes - prebuffer_bytes) / desc_bytes; | |
3224 | double mod_bits_per_second = calc_bits_per_second * percent; | |
3225 | ||
3226 | if (prebuffer < desc_sec) { | |
3227 | double search_sec = | |
3228 | (double)(matroska->duration * matroska->time_scale) / nano_seconds_per_second; | |
3229 | ||
3230 | // Add 1 so the bits per second should be a little bit greater than file | |
3231 | // datarate. | |
3232 | int64_t bps = (int64_t)(mod_bits_per_second) + 1; | |
3233 | const double min_buffer = 0.0; | |
3234 | double buffer = prebuffer; | |
3235 | double sec_to_download = 0.0; | |
3236 | ||
3237 | int rv = buffer_size_after_time_downloaded(prebuffered_ns, search_sec, bps, | |
3238 | min_buffer, &buffer, &sec_to_download, | |
3239 | s, cues_start); | |
3240 | if (rv < 0) { | |
3241 | return -1; | |
3242 | } else if (rv == 0) { | |
3243 | bits_per_second = (double)(bps); | |
3244 | break; | |
3245 | } | |
2ba45a60 | 3246 | } |
2ba45a60 | 3247 | |
f6fa7814 DM |
3248 | desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start); |
3249 | } while (desc_end.start_time_ns != -1); | |
3250 | } | |
2ba45a60 DM |
3251 | if (bandwidth < bits_per_second) bandwidth = bits_per_second; |
3252 | } | |
3253 | return (int64_t)bandwidth; | |
3254 | } | |
3255 | ||
3256 | static int webm_dash_manifest_cues(AVFormatContext *s) | |
3257 | { | |
3258 | MatroskaDemuxContext *matroska = s->priv_data; | |
3259 | EbmlList *seekhead_list = &matroska->seekhead; | |
3260 | MatroskaSeekhead *seekhead = seekhead_list->elem; | |
3261 | char *buf; | |
3262 | int64_t cues_start = -1, cues_end = -1, before_pos, bandwidth; | |
3263 | int i; | |
3264 | ||
3265 | // determine cues start and end positions | |
3266 | for (i = 0; i < seekhead_list->nb_elem; i++) | |
3267 | if (seekhead[i].id == MATROSKA_ID_CUES) | |
3268 | break; | |
3269 | ||
3270 | if (i >= seekhead_list->nb_elem) return -1; | |
3271 | ||
3272 | before_pos = avio_tell(matroska->ctx->pb); | |
3273 | cues_start = seekhead[i].pos + matroska->segment_start; | |
3274 | if (avio_seek(matroska->ctx->pb, cues_start, SEEK_SET) == cues_start) { | |
f6fa7814 DM |
3275 | // cues_end is computed as cues_start + cues_length + length of the |
3276 | // Cues element ID + EBML length of the Cues element. cues_end is | |
3277 | // inclusive and the above sum is reduced by 1. | |
3278 | uint64_t cues_length = 0, cues_id = 0, bytes_read = 0; | |
3279 | bytes_read += ebml_read_num(matroska, matroska->ctx->pb, 4, &cues_id); | |
3280 | bytes_read += ebml_read_length(matroska, matroska->ctx->pb, &cues_length); | |
3281 | cues_end = cues_start + cues_length + bytes_read - 1; | |
2ba45a60 DM |
3282 | } |
3283 | avio_seek(matroska->ctx->pb, before_pos, SEEK_SET); | |
3284 | if (cues_start == -1 || cues_end == -1) return -1; | |
3285 | ||
3286 | // parse the cues | |
3287 | matroska_parse_cues(matroska); | |
3288 | ||
3289 | // cues start | |
3290 | av_dict_set_int(&s->streams[0]->metadata, CUES_START, cues_start, 0); | |
3291 | ||
3292 | // cues end | |
3293 | av_dict_set_int(&s->streams[0]->metadata, CUES_END, cues_end, 0); | |
3294 | ||
3295 | // bandwidth | |
3296 | bandwidth = webm_dash_manifest_compute_bandwidth(s, cues_start); | |
3297 | if (bandwidth < 0) return -1; | |
3298 | av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH, bandwidth, 0); | |
3299 | ||
3300 | // check if all clusters start with key frames | |
3301 | av_dict_set_int(&s->streams[0]->metadata, CLUSTER_KEYFRAME, webm_clusters_start_with_keyframe(s), 0); | |
3302 | ||
3303 | // store cue point timestamps as a comma separated list for checking subsegment alignment in | |
3304 | // the muxer. assumes that each timestamp cannot be more than 20 characters long. | |
3305 | buf = av_malloc(s->streams[0]->nb_index_entries * 20 * sizeof(char)); | |
3306 | if (!buf) return -1; | |
3307 | strcpy(buf, ""); | |
3308 | for (i = 0; i < s->streams[0]->nb_index_entries; i++) { | |
3309 | snprintf(buf, (i + 1) * 20 * sizeof(char), | |
3310 | "%s%" PRId64, buf, s->streams[0]->index_entries[i].timestamp); | |
3311 | if (i != s->streams[0]->nb_index_entries - 1) | |
3312 | strncat(buf, ",", sizeof(char)); | |
3313 | } | |
3314 | av_dict_set(&s->streams[0]->metadata, CUE_TIMESTAMPS, buf, 0); | |
3315 | av_free(buf); | |
3316 | ||
3317 | return 0; | |
3318 | } | |
3319 | ||
3320 | static int webm_dash_manifest_read_header(AVFormatContext *s) | |
3321 | { | |
3322 | char *buf; | |
3323 | int ret = matroska_read_header(s); | |
3324 | MatroskaTrack *tracks; | |
3325 | MatroskaDemuxContext *matroska = s->priv_data; | |
3326 | if (ret) { | |
3327 | av_log(s, AV_LOG_ERROR, "Failed to read file headers\n"); | |
3328 | return -1; | |
3329 | } | |
3330 | ||
3331 | // initialization range | |
3332 | // 5 is the offset of Cluster ID. | |
3333 | av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, avio_tell(s->pb) - 5, 0); | |
3334 | ||
3335 | // basename of the file | |
3336 | buf = strrchr(s->filename, '/'); | |
f6fa7814 | 3337 | av_dict_set(&s->streams[0]->metadata, FILENAME, buf ? ++buf : s->filename, 0); |
2ba45a60 DM |
3338 | |
3339 | // duration | |
3340 | buf = av_asprintf("%g", matroska->duration); | |
3341 | if (!buf) return AVERROR(ENOMEM); | |
3342 | av_dict_set(&s->streams[0]->metadata, DURATION, buf, 0); | |
3343 | av_free(buf); | |
3344 | ||
3345 | // track number | |
3346 | tracks = matroska->tracks.elem; | |
3347 | av_dict_set_int(&s->streams[0]->metadata, TRACK_NUMBER, tracks[0].num, 0); | |
3348 | ||
3349 | // parse the cues and populate Cue related fields | |
3350 | return webm_dash_manifest_cues(s); | |
3351 | } | |
3352 | ||
3353 | static int webm_dash_manifest_read_packet(AVFormatContext *s, AVPacket *pkt) | |
3354 | { | |
3355 | return AVERROR_EOF; | |
3356 | } | |
3357 | ||
3358 | AVInputFormat ff_matroska_demuxer = { | |
3359 | .name = "matroska,webm", | |
3360 | .long_name = NULL_IF_CONFIG_SMALL("Matroska / WebM"), | |
3361 | .extensions = "mkv,mk3d,mka,mks", | |
3362 | .priv_data_size = sizeof(MatroskaDemuxContext), | |
3363 | .read_probe = matroska_probe, | |
3364 | .read_header = matroska_read_header, | |
3365 | .read_packet = matroska_read_packet, | |
3366 | .read_close = matroska_read_close, | |
3367 | .read_seek = matroska_read_seek, | |
3368 | .mime_type = "audio/webm,audio/x-matroska,video/webm,video/x-matroska" | |
3369 | }; | |
3370 | ||
3371 | AVInputFormat ff_webm_dash_manifest_demuxer = { | |
3372 | .name = "webm_dash_manifest", | |
3373 | .long_name = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"), | |
3374 | .priv_data_size = sizeof(MatroskaDemuxContext), | |
3375 | .read_header = webm_dash_manifest_read_header, | |
3376 | .read_packet = webm_dash_manifest_read_packet, | |
3377 | .read_close = matroska_read_close, | |
3378 | }; |