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1 | /* |
2 | * Matroska muxer | |
3 | * Copyright (c) 2007 David Conrad | |
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 | #include <stdint.h> | |
23 | ||
24 | #include "avc.h" | |
25 | #include "hevc.h" | |
26 | #include "avformat.h" | |
27 | #include "avio_internal.h" | |
28 | #include "avlanguage.h" | |
29 | #include "flacenc.h" | |
30 | #include "internal.h" | |
31 | #include "isom.h" | |
32 | #include "matroska.h" | |
33 | #include "riff.h" | |
34 | #include "subtitles.h" | |
35 | #include "vorbiscomment.h" | |
36 | #include "wv.h" | |
37 | ||
38 | #include "libavutil/avstring.h" | |
39 | #include "libavutil/channel_layout.h" | |
40 | #include "libavutil/dict.h" | |
41 | #include "libavutil/intfloat.h" | |
42 | #include "libavutil/intreadwrite.h" | |
43 | #include "libavutil/lfg.h" | |
44 | #include "libavutil/mathematics.h" | |
45 | #include "libavutil/opt.h" | |
46 | #include "libavutil/random_seed.h" | |
47 | #include "libavutil/samplefmt.h" | |
48 | #include "libavutil/sha.h" | |
49 | #include "libavutil/stereo3d.h" | |
50 | ||
51 | #include "libavcodec/xiph.h" | |
52 | #include "libavcodec/mpeg4audio.h" | |
53 | #include "libavcodec/internal.h" | |
54 | ||
55 | typedef struct ebml_master { | |
56 | int64_t pos; ///< absolute offset in the file where the master's elements start | |
57 | int sizebytes; ///< how many bytes were reserved for the size | |
58 | } ebml_master; | |
59 | ||
60 | typedef struct mkv_seekhead_entry { | |
61 | unsigned int elementid; | |
62 | uint64_t segmentpos; | |
63 | } mkv_seekhead_entry; | |
64 | ||
65 | typedef struct mkv_seekhead { | |
66 | int64_t filepos; | |
67 | int64_t segment_offset; ///< the file offset to the beginning of the segment | |
68 | int reserved_size; ///< -1 if appending to file | |
69 | int max_entries; | |
70 | mkv_seekhead_entry *entries; | |
71 | int num_entries; | |
72 | } mkv_seekhead; | |
73 | ||
74 | typedef struct { | |
75 | uint64_t pts; | |
76 | int stream_idx; | |
77 | int tracknum; | |
78 | int64_t cluster_pos; ///< file offset of the cluster containing the block | |
79 | int64_t relative_pos; ///< relative offset from the position of the cluster containing the block | |
80 | int64_t duration; ///< duration of the block according to time base | |
81 | } mkv_cuepoint; | |
82 | ||
83 | typedef struct { | |
84 | int64_t segment_offset; | |
85 | mkv_cuepoint *entries; | |
86 | int num_entries; | |
87 | } mkv_cues; | |
88 | ||
89 | typedef struct { | |
90 | int write_dts; | |
91 | int has_cue; | |
92 | int64_t ts_offset; | |
93 | } mkv_track; | |
94 | ||
95 | #define MODE_MATROSKAv2 0x01 | |
96 | #define MODE_WEBM 0x02 | |
97 | ||
98 | typedef struct MatroskaMuxContext { | |
99 | const AVClass *class; | |
100 | int mode; | |
101 | AVIOContext *dyn_bc; | |
102 | ebml_master segment; | |
103 | int64_t segment_offset; | |
104 | ebml_master cluster; | |
105 | int64_t cluster_pos; ///< file offset of the current cluster | |
106 | int64_t cluster_pts; | |
107 | int64_t duration_offset; | |
108 | int64_t duration; | |
109 | mkv_seekhead *main_seekhead; | |
110 | mkv_cues *cues; | |
111 | mkv_track *tracks; | |
112 | ||
113 | AVPacket cur_audio_pkt; | |
114 | ||
115 | int have_attachments; | |
116 | ||
117 | int reserve_cues_space; | |
118 | int cluster_size_limit; | |
119 | int64_t cues_pos; | |
120 | int64_t cluster_time_limit; | |
121 | int is_dash; | |
122 | int dash_track_number; | |
123 | ||
124 | uint32_t chapter_id_offset; | |
125 | int wrote_chapters; | |
126 | } MatroskaMuxContext; | |
127 | ||
128 | ||
129 | /** 2 bytes * 3 for EBML IDs, 3 1-byte EBML lengths, 8 bytes for 64 bit | |
130 | * offset, 4 bytes for target EBML ID */ | |
131 | #define MAX_SEEKENTRY_SIZE 21 | |
132 | ||
133 | /** per-cuepoint-track - 5 1-byte EBML IDs, 5 1-byte EBML sizes, 4 | |
134 | * 8-byte uint max */ | |
135 | #define MAX_CUETRACKPOS_SIZE 42 | |
136 | ||
137 | /** per-cuepoint - 2 1-byte EBML IDs, 2 1-byte EBML sizes, 8-byte uint max */ | |
138 | #define MAX_CUEPOINT_SIZE(num_tracks) 12 + MAX_CUETRACKPOS_SIZE * num_tracks | |
139 | ||
140 | /** Seek preroll value for opus */ | |
141 | #define OPUS_SEEK_PREROLL 80000000 | |
142 | ||
143 | static int ebml_id_size(unsigned int id) | |
144 | { | |
145 | return (av_log2(id + 1) - 1) / 7 + 1; | |
146 | } | |
147 | ||
148 | static void put_ebml_id(AVIOContext *pb, unsigned int id) | |
149 | { | |
150 | int i = ebml_id_size(id); | |
151 | while (i--) | |
152 | avio_w8(pb, (uint8_t)(id >> (i * 8))); | |
153 | } | |
154 | ||
155 | /** | |
156 | * Write an EBML size meaning "unknown size". | |
157 | * | |
158 | * @param bytes The number of bytes the size should occupy (maximum: 8). | |
159 | */ | |
160 | static void put_ebml_size_unknown(AVIOContext *pb, int bytes) | |
161 | { | |
162 | av_assert0(bytes <= 8); | |
163 | avio_w8(pb, 0x1ff >> bytes); | |
164 | ffio_fill(pb, 0xff, bytes - 1); | |
165 | } | |
166 | ||
167 | /** | |
168 | * Calculate how many bytes are needed to represent a given number in EBML. | |
169 | */ | |
170 | static int ebml_num_size(uint64_t num) | |
171 | { | |
172 | int bytes = 1; | |
173 | while ((num + 1) >> bytes * 7) | |
174 | bytes++; | |
175 | return bytes; | |
176 | } | |
177 | ||
178 | /** | |
179 | * Write a number in EBML variable length format. | |
180 | * | |
181 | * @param bytes The number of bytes that need to be used to write the number. | |
182 | * If zero, any number of bytes can be used. | |
183 | */ | |
184 | static void put_ebml_num(AVIOContext *pb, uint64_t num, int bytes) | |
185 | { | |
186 | int i, needed_bytes = ebml_num_size(num); | |
187 | ||
188 | // sizes larger than this are currently undefined in EBML | |
189 | av_assert0(num < (1ULL << 56) - 1); | |
190 | ||
191 | if (bytes == 0) | |
192 | // don't care how many bytes are used, so use the min | |
193 | bytes = needed_bytes; | |
194 | // the bytes needed to write the given size would exceed the bytes | |
195 | // that we need to use, so write unknown size. This shouldn't happen. | |
196 | av_assert0(bytes >= needed_bytes); | |
197 | ||
198 | num |= 1ULL << bytes * 7; | |
199 | for (i = bytes - 1; i >= 0; i--) | |
200 | avio_w8(pb, (uint8_t)(num >> i * 8)); | |
201 | } | |
202 | ||
203 | static void put_ebml_uint(AVIOContext *pb, unsigned int elementid, uint64_t val) | |
204 | { | |
205 | int i, bytes = 1; | |
206 | uint64_t tmp = val; | |
207 | while (tmp >>= 8) | |
208 | bytes++; | |
209 | ||
210 | put_ebml_id(pb, elementid); | |
211 | put_ebml_num(pb, bytes, 0); | |
212 | for (i = bytes - 1; i >= 0; i--) | |
213 | avio_w8(pb, (uint8_t)(val >> i * 8)); | |
214 | } | |
215 | ||
216 | static void put_ebml_sint(AVIOContext *pb, unsigned int elementid, int64_t val) | |
217 | { | |
218 | int i, bytes = 1; | |
219 | uint64_t tmp = 2*(val < 0 ? val^-1 : val); | |
220 | ||
221 | while (tmp>>=8) bytes++; | |
222 | ||
223 | put_ebml_id(pb, elementid); | |
224 | put_ebml_num(pb, bytes, 0); | |
225 | for (i = bytes - 1; i >= 0; i--) | |
226 | avio_w8(pb, (uint8_t)(val >> i * 8)); | |
227 | } | |
228 | ||
229 | static void put_ebml_float(AVIOContext *pb, unsigned int elementid, double val) | |
230 | { | |
231 | put_ebml_id(pb, elementid); | |
232 | put_ebml_num(pb, 8, 0); | |
233 | avio_wb64(pb, av_double2int(val)); | |
234 | } | |
235 | ||
236 | static void put_ebml_binary(AVIOContext *pb, unsigned int elementid, | |
237 | const void *buf, int size) | |
238 | { | |
239 | put_ebml_id(pb, elementid); | |
240 | put_ebml_num(pb, size, 0); | |
241 | avio_write(pb, buf, size); | |
242 | } | |
243 | ||
244 | static void put_ebml_string(AVIOContext *pb, unsigned int elementid, | |
245 | const char *str) | |
246 | { | |
247 | put_ebml_binary(pb, elementid, str, strlen(str)); | |
248 | } | |
249 | ||
250 | /** | |
251 | * Write a void element of a given size. Useful for reserving space in | |
252 | * the file to be written to later. | |
253 | * | |
254 | * @param size The number of bytes to reserve, which must be at least 2. | |
255 | */ | |
256 | static void put_ebml_void(AVIOContext *pb, uint64_t size) | |
257 | { | |
258 | int64_t currentpos = avio_tell(pb); | |
259 | ||
260 | av_assert0(size >= 2); | |
261 | ||
262 | put_ebml_id(pb, EBML_ID_VOID); | |
263 | // we need to subtract the length needed to store the size from the | |
264 | // size we need to reserve so 2 cases, we use 8 bytes to store the | |
265 | // size if possible, 1 byte otherwise | |
266 | if (size < 10) | |
267 | put_ebml_num(pb, size - 1, 0); | |
268 | else | |
269 | put_ebml_num(pb, size - 9, 8); | |
270 | ffio_fill(pb, 0, currentpos + size - avio_tell(pb)); | |
271 | } | |
272 | ||
273 | static ebml_master start_ebml_master(AVIOContext *pb, unsigned int elementid, | |
274 | uint64_t expectedsize) | |
275 | { | |
276 | int bytes = expectedsize ? ebml_num_size(expectedsize) : 8; | |
277 | put_ebml_id(pb, elementid); | |
278 | put_ebml_size_unknown(pb, bytes); | |
279 | return (ebml_master) {avio_tell(pb), bytes }; | |
280 | } | |
281 | ||
282 | static void end_ebml_master(AVIOContext *pb, ebml_master master) | |
283 | { | |
284 | int64_t pos = avio_tell(pb); | |
285 | ||
286 | if (avio_seek(pb, master.pos - master.sizebytes, SEEK_SET) < 0) | |
287 | return; | |
288 | put_ebml_num(pb, pos - master.pos, master.sizebytes); | |
289 | avio_seek(pb, pos, SEEK_SET); | |
290 | } | |
291 | ||
292 | static void put_xiph_size(AVIOContext *pb, int size) | |
293 | { | |
294 | ffio_fill(pb, 255, size / 255); | |
295 | avio_w8(pb, size % 255); | |
296 | } | |
297 | ||
298 | /** | |
299 | * Initialize a mkv_seekhead element to be ready to index level 1 Matroska | |
300 | * elements. If a maximum number of elements is specified, enough space | |
301 | * will be reserved at the current file location to write a seek head of | |
302 | * that size. | |
303 | * | |
304 | * @param segment_offset The absolute offset to the position in the file | |
305 | * where the segment begins. | |
306 | * @param numelements The maximum number of elements that will be indexed | |
307 | * by this seek head, 0 if unlimited. | |
308 | */ | |
309 | static mkv_seekhead *mkv_start_seekhead(AVIOContext *pb, int64_t segment_offset, | |
310 | int numelements) | |
311 | { | |
312 | mkv_seekhead *new_seekhead = av_mallocz(sizeof(mkv_seekhead)); | |
313 | if (!new_seekhead) | |
314 | return NULL; | |
315 | ||
316 | new_seekhead->segment_offset = segment_offset; | |
317 | ||
318 | if (numelements > 0) { | |
319 | new_seekhead->filepos = avio_tell(pb); | |
320 | // 21 bytes max for a seek entry, 10 bytes max for the SeekHead ID | |
321 | // and size, and 3 bytes to guarantee that an EBML void element | |
322 | // will fit afterwards | |
323 | new_seekhead->reserved_size = numelements * MAX_SEEKENTRY_SIZE + 13; | |
324 | new_seekhead->max_entries = numelements; | |
325 | put_ebml_void(pb, new_seekhead->reserved_size); | |
326 | } | |
327 | return new_seekhead; | |
328 | } | |
329 | ||
330 | static int mkv_add_seekhead_entry(mkv_seekhead *seekhead, unsigned int elementid, uint64_t filepos) | |
331 | { | |
332 | mkv_seekhead_entry *entries = seekhead->entries; | |
333 | ||
334 | // don't store more elements than we reserved space for | |
335 | if (seekhead->max_entries > 0 && seekhead->max_entries <= seekhead->num_entries) | |
336 | return -1; | |
337 | ||
338 | entries = av_realloc_array(entries, seekhead->num_entries + 1, sizeof(mkv_seekhead_entry)); | |
339 | if (!entries) | |
340 | return AVERROR(ENOMEM); | |
341 | seekhead->entries = entries; | |
342 | ||
343 | seekhead->entries[seekhead->num_entries].elementid = elementid; | |
344 | seekhead->entries[seekhead->num_entries++].segmentpos = filepos - seekhead->segment_offset; | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | /** | |
350 | * Write the seek head to the file and free it. If a maximum number of | |
351 | * elements was specified to mkv_start_seekhead(), the seek head will | |
352 | * be written at the location reserved for it. Otherwise, it is written | |
353 | * at the current location in the file. | |
354 | * | |
355 | * @return The file offset where the seekhead was written, | |
356 | * -1 if an error occurred. | |
357 | */ | |
358 | static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead) | |
359 | { | |
360 | ebml_master metaseek, seekentry; | |
361 | int64_t currentpos; | |
362 | int i; | |
363 | ||
364 | currentpos = avio_tell(pb); | |
365 | ||
366 | if (seekhead->reserved_size > 0) { | |
367 | if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) { | |
368 | currentpos = -1; | |
369 | goto fail; | |
370 | } | |
371 | } | |
372 | ||
373 | metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size); | |
374 | for (i = 0; i < seekhead->num_entries; i++) { | |
375 | mkv_seekhead_entry *entry = &seekhead->entries[i]; | |
376 | ||
377 | seekentry = start_ebml_master(pb, MATROSKA_ID_SEEKENTRY, MAX_SEEKENTRY_SIZE); | |
378 | ||
379 | put_ebml_id(pb, MATROSKA_ID_SEEKID); | |
380 | put_ebml_num(pb, ebml_id_size(entry->elementid), 0); | |
381 | put_ebml_id(pb, entry->elementid); | |
382 | ||
383 | put_ebml_uint(pb, MATROSKA_ID_SEEKPOSITION, entry->segmentpos); | |
384 | end_ebml_master(pb, seekentry); | |
385 | } | |
386 | end_ebml_master(pb, metaseek); | |
387 | ||
388 | if (seekhead->reserved_size > 0) { | |
389 | uint64_t remaining = seekhead->filepos + seekhead->reserved_size - avio_tell(pb); | |
390 | put_ebml_void(pb, remaining); | |
391 | avio_seek(pb, currentpos, SEEK_SET); | |
392 | ||
393 | currentpos = seekhead->filepos; | |
394 | } | |
395 | fail: | |
396 | av_freep(&seekhead->entries); | |
397 | av_free(seekhead); | |
398 | ||
399 | return currentpos; | |
400 | } | |
401 | ||
402 | static mkv_cues *mkv_start_cues(int64_t segment_offset) | |
403 | { | |
404 | mkv_cues *cues = av_mallocz(sizeof(mkv_cues)); | |
405 | if (!cues) | |
406 | return NULL; | |
407 | ||
408 | cues->segment_offset = segment_offset; | |
409 | return cues; | |
410 | } | |
411 | ||
412 | static int mkv_add_cuepoint(mkv_cues *cues, int stream, int tracknum, int64_t ts, | |
413 | int64_t cluster_pos, int64_t relative_pos, int64_t duration) | |
414 | { | |
415 | mkv_cuepoint *entries = cues->entries; | |
416 | ||
417 | if (ts < 0) | |
418 | return 0; | |
419 | ||
420 | entries = av_realloc_array(entries, cues->num_entries + 1, sizeof(mkv_cuepoint)); | |
421 | if (!entries) | |
422 | return AVERROR(ENOMEM); | |
423 | cues->entries = entries; | |
424 | ||
425 | cues->entries[cues->num_entries].pts = ts; | |
426 | cues->entries[cues->num_entries].stream_idx = stream; | |
427 | cues->entries[cues->num_entries].tracknum = tracknum; | |
428 | cues->entries[cues->num_entries].cluster_pos = cluster_pos - cues->segment_offset; | |
429 | cues->entries[cues->num_entries].relative_pos = relative_pos; | |
430 | cues->entries[cues->num_entries++].duration = duration; | |
431 | ||
432 | return 0; | |
433 | } | |
434 | ||
435 | static int64_t mkv_write_cues(AVFormatContext *s, mkv_cues *cues, mkv_track *tracks, int num_tracks) | |
436 | { | |
437 | AVIOContext *pb = s->pb; | |
438 | ebml_master cues_element; | |
439 | int64_t currentpos; | |
440 | int i, j; | |
441 | ||
442 | currentpos = avio_tell(pb); | |
443 | cues_element = start_ebml_master(pb, MATROSKA_ID_CUES, 0); | |
444 | ||
445 | for (i = 0; i < cues->num_entries; i++) { | |
446 | ebml_master cuepoint, track_positions; | |
447 | mkv_cuepoint *entry = &cues->entries[i]; | |
448 | uint64_t pts = entry->pts; | |
449 | int ctp_nb = 0; | |
450 | ||
451 | // Calculate the number of entries, so we know the element size | |
452 | for (j = 0; j < num_tracks; j++) | |
453 | tracks[j].has_cue = 0; | |
454 | for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) { | |
455 | int tracknum = entry[j].stream_idx; | |
456 | av_assert0(tracknum>=0 && tracknum<num_tracks); | |
457 | if (tracks[tracknum].has_cue && s->streams[tracknum]->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) | |
458 | continue; | |
459 | tracks[tracknum].has_cue = 1; | |
460 | ctp_nb ++; | |
461 | } | |
462 | ||
463 | cuepoint = start_ebml_master(pb, MATROSKA_ID_POINTENTRY, MAX_CUEPOINT_SIZE(ctp_nb)); | |
464 | put_ebml_uint(pb, MATROSKA_ID_CUETIME, pts); | |
465 | ||
466 | // put all the entries from different tracks that have the exact same | |
467 | // timestamp into the same CuePoint | |
468 | for (j = 0; j < num_tracks; j++) | |
469 | tracks[j].has_cue = 0; | |
470 | for (j = 0; j < cues->num_entries - i && entry[j].pts == pts; j++) { | |
471 | int tracknum = entry[j].stream_idx; | |
472 | av_assert0(tracknum>=0 && tracknum<num_tracks); | |
473 | if (tracks[tracknum].has_cue && s->streams[tracknum]->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) | |
474 | continue; | |
475 | tracks[tracknum].has_cue = 1; | |
476 | track_positions = start_ebml_master(pb, MATROSKA_ID_CUETRACKPOSITION, MAX_CUETRACKPOS_SIZE); | |
477 | put_ebml_uint(pb, MATROSKA_ID_CUETRACK , entry[j].tracknum ); | |
478 | put_ebml_uint(pb, MATROSKA_ID_CUECLUSTERPOSITION , entry[j].cluster_pos); | |
479 | put_ebml_uint(pb, MATROSKA_ID_CUERELATIVEPOSITION, entry[j].relative_pos); | |
480 | if (entry[j].duration != -1) | |
481 | put_ebml_uint(pb, MATROSKA_ID_CUEDURATION , entry[j].duration); | |
482 | end_ebml_master(pb, track_positions); | |
483 | } | |
484 | i += j - 1; | |
485 | end_ebml_master(pb, cuepoint); | |
486 | } | |
487 | end_ebml_master(pb, cues_element); | |
488 | ||
489 | return currentpos; | |
490 | } | |
491 | ||
492 | static int put_xiph_codecpriv(AVFormatContext *s, AVIOContext *pb, AVCodecContext *codec) | |
493 | { | |
494 | uint8_t *header_start[3]; | |
495 | int header_len[3]; | |
496 | int first_header_size; | |
497 | int j; | |
498 | ||
499 | if (codec->codec_id == AV_CODEC_ID_VORBIS) | |
500 | first_header_size = 30; | |
501 | else | |
502 | first_header_size = 42; | |
503 | ||
504 | if (avpriv_split_xiph_headers(codec->extradata, codec->extradata_size, | |
505 | first_header_size, header_start, header_len) < 0) { | |
506 | av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n"); | |
507 | return -1; | |
508 | } | |
509 | ||
510 | avio_w8(pb, 2); // number packets - 1 | |
511 | for (j = 0; j < 2; j++) { | |
512 | put_xiph_size(pb, header_len[j]); | |
513 | } | |
514 | for (j = 0; j < 3; j++) | |
515 | avio_write(pb, header_start[j], header_len[j]); | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
520 | static int put_wv_codecpriv(AVIOContext *pb, AVCodecContext *codec) | |
521 | { | |
522 | if (codec->extradata && codec->extradata_size == 2) | |
523 | avio_write(pb, codec->extradata, 2); | |
524 | else | |
525 | avio_wl16(pb, 0x403); // fallback to the version mentioned in matroska specs | |
526 | return 0; | |
527 | } | |
528 | ||
529 | static int put_flac_codecpriv(AVFormatContext *s, | |
530 | AVIOContext *pb, AVCodecContext *codec) | |
531 | { | |
532 | int write_comment = (codec->channel_layout && | |
533 | !(codec->channel_layout & ~0x3ffffULL) && | |
534 | !ff_flac_is_native_layout(codec->channel_layout)); | |
535 | int ret = ff_flac_write_header(pb, codec->extradata, codec->extradata_size, | |
536 | !write_comment); | |
537 | ||
538 | if (ret < 0) | |
539 | return ret; | |
540 | ||
541 | if (write_comment) { | |
542 | const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ? | |
543 | "Lavf" : LIBAVFORMAT_IDENT; | |
544 | AVDictionary *dict = NULL; | |
545 | uint8_t buf[32], *data, *p; | |
546 | int len; | |
547 | ||
548 | snprintf(buf, sizeof(buf), "0x%"PRIx64, codec->channel_layout); | |
549 | av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0); | |
550 | ||
551 | len = ff_vorbiscomment_length(dict, vendor); | |
552 | data = av_malloc(len + 4); | |
553 | if (!data) { | |
554 | av_dict_free(&dict); | |
555 | return AVERROR(ENOMEM); | |
556 | } | |
557 | ||
558 | data[0] = 0x84; | |
559 | AV_WB24(data + 1, len); | |
560 | ||
561 | p = data + 4; | |
562 | ff_vorbiscomment_write(&p, &dict, vendor); | |
563 | ||
564 | avio_write(pb, data, len + 4); | |
565 | ||
566 | av_freep(&data); | |
567 | av_dict_free(&dict); | |
568 | } | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, | |
574 | int *sample_rate, int *output_sample_rate) | |
575 | { | |
576 | MPEG4AudioConfig mp4ac; | |
577 | ||
578 | if (avpriv_mpeg4audio_get_config(&mp4ac, codec->extradata, | |
579 | codec->extradata_size * 8, 1) < 0) { | |
580 | av_log(s, AV_LOG_WARNING, | |
581 | "Error parsing AAC extradata, unable to determine samplerate.\n"); | |
582 | return; | |
583 | } | |
584 | ||
585 | *sample_rate = mp4ac.sample_rate; | |
586 | *output_sample_rate = mp4ac.ext_sample_rate; | |
587 | } | |
588 | ||
589 | static int mkv_write_native_codecprivate(AVFormatContext *s, | |
590 | AVCodecContext *codec, | |
591 | AVIOContext *dyn_cp) | |
592 | { | |
593 | switch (codec->codec_id) { | |
594 | case AV_CODEC_ID_VORBIS: | |
595 | case AV_CODEC_ID_THEORA: | |
596 | return put_xiph_codecpriv(s, dyn_cp, codec); | |
597 | case AV_CODEC_ID_FLAC: | |
598 | return put_flac_codecpriv(s, dyn_cp, codec); | |
599 | case AV_CODEC_ID_WAVPACK: | |
600 | return put_wv_codecpriv(dyn_cp, codec); | |
601 | case AV_CODEC_ID_H264: | |
602 | return ff_isom_write_avcc(dyn_cp, codec->extradata, | |
603 | codec->extradata_size); | |
604 | case AV_CODEC_ID_HEVC: | |
605 | return ff_isom_write_hvcc(dyn_cp, codec->extradata, | |
606 | codec->extradata_size, 0); | |
607 | case AV_CODEC_ID_ALAC: | |
608 | if (codec->extradata_size < 36) { | |
609 | av_log(s, AV_LOG_ERROR, | |
610 | "Invalid extradata found, ALAC expects a 36-byte " | |
611 | "QuickTime atom."); | |
612 | return AVERROR_INVALIDDATA; | |
613 | } else | |
614 | avio_write(dyn_cp, codec->extradata + 12, | |
615 | codec->extradata_size - 12); | |
616 | break; | |
617 | default: | |
618 | if (codec->codec_id == AV_CODEC_ID_PRORES && | |
619 | ff_codec_get_id(ff_codec_movvideo_tags, codec->codec_tag) == AV_CODEC_ID_PRORES) { | |
620 | avio_wl32(dyn_cp, codec->codec_tag); | |
621 | } else if (codec->extradata_size && codec->codec_id != AV_CODEC_ID_TTA) | |
622 | avio_write(dyn_cp, codec->extradata, codec->extradata_size); | |
623 | } | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, | |
629 | AVCodecContext *codec, int native_id, | |
630 | int qt_id) | |
631 | { | |
632 | AVIOContext *dyn_cp; | |
633 | uint8_t *codecpriv; | |
634 | int ret, codecpriv_size; | |
635 | ||
636 | ret = avio_open_dyn_buf(&dyn_cp); | |
637 | if (ret < 0) | |
638 | return ret; | |
639 | ||
640 | if (native_id) { | |
641 | ret = mkv_write_native_codecprivate(s, codec, dyn_cp); | |
642 | } else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) { | |
643 | if (qt_id) { | |
644 | if (!codec->codec_tag) | |
645 | codec->codec_tag = ff_codec_get_tag(ff_codec_movvideo_tags, | |
646 | codec->codec_id); | |
647 | if (codec->extradata_size) { | |
648 | if ( ff_codec_get_id(ff_codec_movvideo_tags, codec->codec_tag) == codec->codec_id | |
649 | && ff_codec_get_id(ff_codec_movvideo_tags, AV_RL32(codec->extradata + 4)) != codec->codec_id | |
650 | ) { | |
651 | int i; | |
652 | avio_wb32(dyn_cp, 0x5a + codec->extradata_size); | |
653 | avio_wl32(dyn_cp, codec->codec_tag); | |
654 | for(i = 0; i < 0x5a - 8; i++) | |
655 | avio_w8(dyn_cp, 0); | |
656 | } | |
657 | avio_write(dyn_cp, codec->extradata, codec->extradata_size); | |
658 | } | |
659 | } else { | |
660 | if (!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id)) | |
661 | av_log(s, AV_LOG_WARNING, "codec %s is not supported by this format\n", | |
662 | avcodec_get_name(codec->codec_id)); | |
663 | ||
664 | if (!codec->codec_tag) | |
665 | codec->codec_tag = ff_codec_get_tag(ff_codec_bmp_tags, | |
666 | codec->codec_id); | |
667 | if (!codec->codec_tag) { | |
668 | av_log(s, AV_LOG_ERROR, "No bmp codec tag found for codec %s\n", | |
669 | avcodec_get_name(codec->codec_id)); | |
670 | ret = AVERROR(EINVAL); | |
671 | } | |
672 | ||
673 | ff_put_bmp_header(dyn_cp, codec, ff_codec_bmp_tags, 0, 0); | |
674 | } | |
675 | } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
676 | unsigned int tag; | |
677 | tag = ff_codec_get_tag(ff_codec_wav_tags, codec->codec_id); | |
678 | if (!tag) { | |
679 | av_log(s, AV_LOG_ERROR, "No wav codec tag found for codec %s\n", | |
680 | avcodec_get_name(codec->codec_id)); | |
681 | ret = AVERROR(EINVAL); | |
682 | } | |
683 | if (!codec->codec_tag) | |
684 | codec->codec_tag = tag; | |
685 | ||
686 | ff_put_wav_header(dyn_cp, codec, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX); | |
687 | } | |
688 | ||
689 | codecpriv_size = avio_close_dyn_buf(dyn_cp, &codecpriv); | |
690 | if (codecpriv_size) | |
691 | put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, | |
692 | codecpriv_size); | |
693 | av_free(codecpriv); | |
694 | return ret; | |
695 | } | |
696 | ||
697 | ||
698 | static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, | |
699 | AVStream *st, int mode) | |
700 | { | |
701 | int i; | |
702 | int ret = 0; | |
703 | AVDictionaryEntry *tag; | |
704 | MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB; | |
705 | ||
706 | // convert metadata into proper side data and add it to the stream | |
707 | if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) || | |
708 | (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) { | |
709 | int stereo_mode = atoi(tag->value); | |
710 | ||
711 | for (i=0; i<MATROSKA_VIDEO_STEREOMODE_TYPE_NB; i++) | |
712 | if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){ | |
713 | stereo_mode = i; | |
714 | break; | |
715 | } | |
716 | ||
717 | if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB && | |
718 | stereo_mode != 10 && stereo_mode != 12) { | |
719 | int ret = ff_mkv_stereo3d_conv(st, stereo_mode); | |
720 | if (ret < 0) | |
721 | return ret; | |
722 | } | |
723 | } | |
724 | ||
725 | for (i = 0; i < st->nb_side_data; i++) { | |
726 | AVPacketSideData sd = st->side_data[i]; | |
727 | if (sd.type == AV_PKT_DATA_STEREO3D) { | |
728 | AVStereo3D *stereo = (AVStereo3D *)sd.data; | |
729 | ||
730 | switch (stereo->type) { | |
731 | case AV_STEREO3D_2D: | |
732 | format = MATROSKA_VIDEO_STEREOMODE_TYPE_MONO; | |
733 | break; | |
734 | case AV_STEREO3D_SIDEBYSIDE: | |
735 | format = (stereo->flags & AV_STEREO3D_FLAG_INVERT) | |
736 | ? MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT | |
737 | : MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT; | |
738 | break; | |
739 | case AV_STEREO3D_TOPBOTTOM: | |
740 | format = MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM; | |
741 | if (stereo->flags & AV_STEREO3D_FLAG_INVERT) | |
742 | format--; | |
743 | break; | |
744 | case AV_STEREO3D_CHECKERBOARD: | |
745 | format = MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR; | |
746 | if (stereo->flags & AV_STEREO3D_FLAG_INVERT) | |
747 | format--; | |
748 | break; | |
749 | case AV_STEREO3D_LINES: | |
750 | format = MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR; | |
751 | if (stereo->flags & AV_STEREO3D_FLAG_INVERT) | |
752 | format--; | |
753 | break; | |
754 | case AV_STEREO3D_COLUMNS: | |
755 | format = MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR; | |
756 | if (stereo->flags & AV_STEREO3D_FLAG_INVERT) | |
757 | format--; | |
758 | break; | |
759 | case AV_STEREO3D_FRAMESEQUENCE: | |
760 | format = MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR; | |
761 | if (stereo->flags & AV_STEREO3D_FLAG_INVERT) | |
762 | format++; | |
763 | break; | |
764 | } | |
765 | ret = stereo->type; | |
766 | ||
767 | break; | |
768 | } | |
769 | } | |
770 | ||
771 | if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB) | |
772 | return ret; | |
773 | ||
774 | if ((mode == MODE_WEBM && | |
775 | format > MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM && | |
776 | format != MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT) | |
777 | || format >= MATROSKA_VIDEO_STEREOMODE_TYPE_NB) { | |
778 | av_log(s, AV_LOG_ERROR, | |
779 | "The specified stereo mode is not valid.\n"); | |
780 | format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB; | |
781 | return AVERROR(EINVAL); | |
782 | } | |
783 | ||
784 | put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, format); | |
785 | ||
786 | return ret; | |
787 | } | |
788 | ||
789 | static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, | |
790 | int i, AVIOContext *pb, int default_stream_exists) | |
791 | { | |
792 | AVStream *st = s->streams[i]; | |
793 | AVCodecContext *codec = st->codec; | |
794 | ebml_master subinfo, track; | |
795 | int native_id = 0; | |
796 | int qt_id = 0; | |
797 | int bit_depth = av_get_bits_per_sample(codec->codec_id); | |
798 | int sample_rate = codec->sample_rate; | |
799 | int output_sample_rate = 0; | |
800 | int display_width_div = 1; | |
801 | int display_height_div = 1; | |
802 | int j, ret; | |
803 | AVDictionaryEntry *tag; | |
804 | ||
805 | // ms precision is the de-facto standard timescale for mkv files | |
806 | avpriv_set_pts_info(st, 64, 1, 1000); | |
807 | ||
808 | if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) { | |
809 | mkv->have_attachments = 1; | |
810 | return 0; | |
811 | } | |
812 | ||
813 | if (!bit_depth && codec->codec_id != AV_CODEC_ID_ADPCM_G726) | |
814 | bit_depth = av_get_bytes_per_sample(codec->sample_fmt) << 3; | |
815 | if (!bit_depth) | |
816 | bit_depth = codec->bits_per_coded_sample; | |
817 | ||
818 | if (codec->codec_id == AV_CODEC_ID_AAC) | |
819 | get_aac_sample_rates(s, codec, &sample_rate, &output_sample_rate); | |
820 | ||
821 | track = start_ebml_master(pb, MATROSKA_ID_TRACKENTRY, 0); | |
822 | put_ebml_uint (pb, MATROSKA_ID_TRACKNUMBER, | |
823 | mkv->is_dash ? mkv->dash_track_number : i + 1); | |
824 | put_ebml_uint (pb, MATROSKA_ID_TRACKUID, | |
825 | mkv->is_dash ? mkv->dash_track_number : i + 1); | |
826 | put_ebml_uint (pb, MATROSKA_ID_TRACKFLAGLACING , 0); // no lacing (yet) | |
827 | ||
828 | if ((tag = av_dict_get(st->metadata, "title", NULL, 0))) | |
829 | put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value); | |
830 | tag = av_dict_get(st->metadata, "language", NULL, 0); | |
831 | if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) { | |
832 | put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und"); | |
833 | } else if (tag && tag->value) { | |
834 | put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag->value); | |
835 | } | |
836 | ||
837 | // The default value for TRACKFLAGDEFAULT is 1, so add element | |
838 | // if we need to clear it. | |
839 | if (default_stream_exists && !(st->disposition & AV_DISPOSITION_DEFAULT)) | |
840 | put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT)); | |
841 | ||
842 | if (st->disposition & AV_DISPOSITION_FORCED) | |
843 | put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGFORCED, 1); | |
844 | ||
845 | if (mkv->mode == MODE_WEBM && codec->codec_id == AV_CODEC_ID_WEBVTT) { | |
846 | const char *codec_id; | |
847 | if (st->disposition & AV_DISPOSITION_CAPTIONS) { | |
848 | codec_id = "D_WEBVTT/CAPTIONS"; | |
849 | native_id = MATROSKA_TRACK_TYPE_SUBTITLE; | |
850 | } else if (st->disposition & AV_DISPOSITION_DESCRIPTIONS) { | |
851 | codec_id = "D_WEBVTT/DESCRIPTIONS"; | |
852 | native_id = MATROSKA_TRACK_TYPE_METADATA; | |
853 | } else if (st->disposition & AV_DISPOSITION_METADATA) { | |
854 | codec_id = "D_WEBVTT/METADATA"; | |
855 | native_id = MATROSKA_TRACK_TYPE_METADATA; | |
856 | } else { | |
857 | codec_id = "D_WEBVTT/SUBTITLES"; | |
858 | native_id = MATROSKA_TRACK_TYPE_SUBTITLE; | |
859 | } | |
860 | put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id); | |
861 | } else { | |
862 | // look for a codec ID string specific to mkv to use, | |
863 | // if none are found, use AVI codes | |
864 | for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) { | |
865 | if (ff_mkv_codec_tags[j].id == codec->codec_id) { | |
866 | put_ebml_string(pb, MATROSKA_ID_CODECID, ff_mkv_codec_tags[j].str); | |
867 | native_id = 1; | |
868 | break; | |
869 | } | |
870 | } | |
871 | } | |
872 | ||
873 | if (codec->codec_type == AVMEDIA_TYPE_AUDIO && codec->delay && codec->codec_id == AV_CODEC_ID_OPUS) { | |
874 | // mkv->tracks[i].ts_offset = av_rescale_q(codec->delay, | |
875 | // (AVRational){ 1, codec->sample_rate }, | |
876 | // st->time_base); | |
877 | ||
878 | put_ebml_uint(pb, MATROSKA_ID_CODECDELAY, | |
879 | av_rescale_q(codec->delay, (AVRational){ 1, codec->sample_rate }, | |
880 | (AVRational){ 1, 1000000000 })); | |
881 | } | |
882 | if (codec->codec_id == AV_CODEC_ID_OPUS) { | |
883 | put_ebml_uint(pb, MATROSKA_ID_SEEKPREROLL, OPUS_SEEK_PREROLL); | |
884 | } | |
885 | ||
886 | if (mkv->mode == MODE_WEBM && !(codec->codec_id == AV_CODEC_ID_VP8 || | |
887 | codec->codec_id == AV_CODEC_ID_VP9 || | |
888 | codec->codec_id == AV_CODEC_ID_OPUS || | |
889 | codec->codec_id == AV_CODEC_ID_VORBIS || | |
890 | codec->codec_id == AV_CODEC_ID_WEBVTT)) { | |
891 | av_log(s, AV_LOG_ERROR, | |
892 | "Only VP8 or VP9 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM.\n"); | |
893 | return AVERROR(EINVAL); | |
894 | } | |
895 | ||
896 | switch (codec->codec_type) { | |
897 | case AVMEDIA_TYPE_VIDEO: | |
898 | put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO); | |
899 | ||
900 | if( st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0 | |
901 | && 1.0/av_q2d(st->avg_frame_rate) > av_q2d(codec->time_base)) | |
902 | put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, 1E9 / av_q2d(st->avg_frame_rate)); | |
903 | else | |
904 | put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9); | |
905 | ||
906 | if (!native_id && | |
907 | ff_codec_get_tag(ff_codec_movvideo_tags, codec->codec_id) && | |
908 | (!ff_codec_get_tag(ff_codec_bmp_tags, codec->codec_id) || | |
909 | codec->codec_id == AV_CODEC_ID_SVQ1 || | |
910 | codec->codec_id == AV_CODEC_ID_SVQ3 || | |
911 | codec->codec_id == AV_CODEC_ID_CINEPAK)) | |
912 | qt_id = 1; | |
913 | ||
914 | if (qt_id) | |
915 | put_ebml_string(pb, MATROSKA_ID_CODECID, "V_QUICKTIME"); | |
916 | else if (!native_id) { | |
917 | // if there is no mkv-specific codec ID, use VFW mode | |
918 | put_ebml_string(pb, MATROSKA_ID_CODECID, "V_MS/VFW/FOURCC"); | |
919 | mkv->tracks[i].write_dts = 1; | |
920 | } | |
921 | ||
922 | subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKVIDEO, 0); | |
923 | // XXX: interlace flag? | |
924 | put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width); | |
925 | put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height); | |
926 | ||
927 | // check both side data and metadata for stereo information, | |
928 | // write the result to the bitstream if any is found | |
929 | ret = mkv_write_stereo_mode(s, pb, st, mkv->mode); | |
930 | if (ret < 0) | |
931 | return ret; | |
932 | ||
933 | switch (ret) { | |
934 | case AV_STEREO3D_SIDEBYSIDE: | |
935 | case AV_STEREO3D_COLUMNS: | |
936 | display_width_div = 2; | |
937 | break; | |
938 | case AV_STEREO3D_TOPBOTTOM: | |
939 | case AV_STEREO3D_LINES: | |
940 | display_height_div = 2; | |
941 | break; | |
942 | } | |
943 | ||
944 | if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) || | |
945 | ((tag = av_dict_get( s->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) || | |
946 | (codec->pix_fmt == AV_PIX_FMT_YUVA420P)) { | |
947 | put_ebml_uint(pb, MATROSKA_ID_VIDEOALPHAMODE, 1); | |
948 | } | |
949 | ||
950 | if (st->sample_aspect_ratio.num) { | |
951 | int64_t d_width = av_rescale(codec->width, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den); | |
952 | if (d_width > INT_MAX) { | |
953 | av_log(s, AV_LOG_ERROR, "Overflow in display width\n"); | |
954 | return AVERROR(EINVAL); | |
955 | } | |
956 | put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div); | |
957 | put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div); | |
958 | } else if (display_width_div != 1 || display_height_div != 1) { | |
959 | put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , codec->width / display_width_div); | |
960 | put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, codec->height / display_height_div); | |
961 | } | |
962 | ||
963 | if (codec->codec_id == AV_CODEC_ID_RAWVIDEO) { | |
964 | uint32_t color_space = av_le2ne32(codec->codec_tag); | |
965 | put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space)); | |
966 | } | |
967 | end_ebml_master(pb, subinfo); | |
968 | break; | |
969 | ||
970 | case AVMEDIA_TYPE_AUDIO: | |
971 | put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_AUDIO); | |
972 | ||
973 | if (!native_id) | |
974 | // no mkv-specific ID, use ACM mode | |
975 | put_ebml_string(pb, MATROSKA_ID_CODECID, "A_MS/ACM"); | |
976 | ||
977 | subinfo = start_ebml_master(pb, MATROSKA_ID_TRACKAUDIO, 0); | |
978 | put_ebml_uint (pb, MATROSKA_ID_AUDIOCHANNELS , codec->channels); | |
979 | put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate); | |
980 | if (output_sample_rate) | |
981 | put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate); | |
982 | if (bit_depth) | |
983 | put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth); | |
984 | end_ebml_master(pb, subinfo); | |
985 | break; | |
986 | ||
987 | case AVMEDIA_TYPE_SUBTITLE: | |
988 | if (!native_id) { | |
989 | av_log(s, AV_LOG_ERROR, "Subtitle codec %d is not supported.\n", codec->codec_id); | |
990 | return AVERROR(ENOSYS); | |
991 | } | |
992 | ||
993 | if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) | |
994 | native_id = MATROSKA_TRACK_TYPE_SUBTITLE; | |
995 | ||
996 | put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, native_id); | |
997 | break; | |
998 | default: | |
999 | av_log(s, AV_LOG_ERROR, "Only audio, video, and subtitles are supported for Matroska.\n"); | |
1000 | return AVERROR(EINVAL); | |
1001 | } | |
1002 | ||
1003 | if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) { | |
1004 | ret = mkv_write_codecprivate(s, pb, codec, native_id, qt_id); | |
1005 | if (ret < 0) | |
1006 | return ret; | |
1007 | } | |
1008 | ||
1009 | end_ebml_master(pb, track); | |
1010 | ||
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | static int mkv_write_tracks(AVFormatContext *s) | |
1015 | { | |
1016 | MatroskaMuxContext *mkv = s->priv_data; | |
1017 | AVIOContext *pb = s->pb; | |
1018 | ebml_master tracks; | |
1019 | int i, ret, default_stream_exists = 0; | |
1020 | ||
1021 | ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TRACKS, avio_tell(pb)); | |
1022 | if (ret < 0) | |
1023 | return ret; | |
1024 | ||
1025 | tracks = start_ebml_master(pb, MATROSKA_ID_TRACKS, 0); | |
1026 | for (i = 0; i < s->nb_streams; i++) { | |
1027 | AVStream *st = s->streams[i]; | |
1028 | default_stream_exists |= st->disposition & AV_DISPOSITION_DEFAULT; | |
1029 | } | |
1030 | for (i = 0; i < s->nb_streams; i++) { | |
1031 | ret = mkv_write_track(s, mkv, i, pb, default_stream_exists); | |
1032 | if (ret < 0) | |
1033 | return ret; | |
1034 | } | |
1035 | end_ebml_master(pb, tracks); | |
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | static int mkv_write_chapters(AVFormatContext *s) | |
1040 | { | |
1041 | MatroskaMuxContext *mkv = s->priv_data; | |
1042 | AVIOContext *pb = s->pb; | |
1043 | ebml_master chapters, editionentry; | |
1044 | AVRational scale = {1, 1E9}; | |
1045 | int i, ret; | |
1046 | ||
1047 | if (!s->nb_chapters || mkv->wrote_chapters) | |
1048 | return 0; | |
1049 | ||
1050 | ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CHAPTERS, avio_tell(pb)); | |
1051 | if (ret < 0) return ret; | |
1052 | ||
1053 | chapters = start_ebml_master(pb, MATROSKA_ID_CHAPTERS , 0); | |
1054 | editionentry = start_ebml_master(pb, MATROSKA_ID_EDITIONENTRY, 0); | |
1055 | put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGDEFAULT, 1); | |
1056 | put_ebml_uint(pb, MATROSKA_ID_EDITIONFLAGHIDDEN , 0); | |
1057 | for (i = 0; i < s->nb_chapters; i++) { | |
1058 | ebml_master chapteratom, chapterdisplay; | |
1059 | AVChapter *c = s->chapters[i]; | |
1060 | AVDictionaryEntry *t = NULL; | |
1061 | ||
1062 | chapteratom = start_ebml_master(pb, MATROSKA_ID_CHAPTERATOM, 0); | |
1063 | put_ebml_uint(pb, MATROSKA_ID_CHAPTERUID, c->id + mkv->chapter_id_offset); | |
1064 | put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMESTART, | |
1065 | av_rescale_q(c->start, c->time_base, scale)); | |
1066 | put_ebml_uint(pb, MATROSKA_ID_CHAPTERTIMEEND, | |
1067 | av_rescale_q(c->end, c->time_base, scale)); | |
1068 | put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGHIDDEN , 0); | |
1069 | put_ebml_uint(pb, MATROSKA_ID_CHAPTERFLAGENABLED, 1); | |
1070 | if ((t = av_dict_get(c->metadata, "title", NULL, 0))) { | |
1071 | chapterdisplay = start_ebml_master(pb, MATROSKA_ID_CHAPTERDISPLAY, 0); | |
1072 | put_ebml_string(pb, MATROSKA_ID_CHAPSTRING, t->value); | |
1073 | put_ebml_string(pb, MATROSKA_ID_CHAPLANG , "und"); | |
1074 | end_ebml_master(pb, chapterdisplay); | |
1075 | } | |
1076 | end_ebml_master(pb, chapteratom); | |
1077 | } | |
1078 | end_ebml_master(pb, editionentry); | |
1079 | end_ebml_master(pb, chapters); | |
1080 | ||
1081 | mkv->wrote_chapters = 1; | |
1082 | return 0; | |
1083 | } | |
1084 | ||
1085 | static void mkv_write_simpletag(AVIOContext *pb, AVDictionaryEntry *t) | |
1086 | { | |
1087 | uint8_t *key = av_strdup(t->key); | |
1088 | uint8_t *p = key; | |
1089 | const uint8_t *lang = NULL; | |
1090 | ebml_master tag; | |
1091 | ||
1092 | if ((p = strrchr(p, '-')) && | |
1093 | (lang = av_convert_lang_to(p + 1, AV_LANG_ISO639_2_BIBL))) | |
1094 | *p = 0; | |
1095 | ||
1096 | p = key; | |
1097 | while (*p) { | |
1098 | if (*p == ' ') | |
1099 | *p = '_'; | |
1100 | else if (*p >= 'a' && *p <= 'z') | |
1101 | *p -= 'a' - 'A'; | |
1102 | p++; | |
1103 | } | |
1104 | ||
1105 | tag = start_ebml_master(pb, MATROSKA_ID_SIMPLETAG, 0); | |
1106 | put_ebml_string(pb, MATROSKA_ID_TAGNAME, key); | |
1107 | if (lang) | |
1108 | put_ebml_string(pb, MATROSKA_ID_TAGLANG, lang); | |
1109 | put_ebml_string(pb, MATROSKA_ID_TAGSTRING, t->value); | |
1110 | end_ebml_master(pb, tag); | |
1111 | ||
1112 | av_freep(&key); | |
1113 | } | |
1114 | ||
1115 | static int mkv_write_tag(AVFormatContext *s, AVDictionary *m, unsigned int elementid, | |
1116 | unsigned int uid, ebml_master *tags) | |
1117 | { | |
1118 | MatroskaMuxContext *mkv = s->priv_data; | |
1119 | ebml_master tag, targets; | |
1120 | AVDictionaryEntry *t = NULL; | |
1121 | int ret; | |
1122 | ||
1123 | if (!tags->pos) { | |
1124 | ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_TAGS, avio_tell(s->pb)); | |
1125 | if (ret < 0) return ret; | |
1126 | ||
1127 | *tags = start_ebml_master(s->pb, MATROSKA_ID_TAGS, 0); | |
1128 | } | |
1129 | ||
1130 | tag = start_ebml_master(s->pb, MATROSKA_ID_TAG, 0); | |
1131 | targets = start_ebml_master(s->pb, MATROSKA_ID_TAGTARGETS, 0); | |
1132 | if (elementid) | |
1133 | put_ebml_uint(s->pb, elementid, uid); | |
1134 | end_ebml_master(s->pb, targets); | |
1135 | ||
1136 | while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) | |
1137 | if (av_strcasecmp(t->key, "title") && | |
1138 | av_strcasecmp(t->key, "stereo_mode") && | |
1139 | av_strcasecmp(t->key, "encoding_tool")) | |
1140 | mkv_write_simpletag(s->pb, t); | |
1141 | ||
1142 | end_ebml_master(s->pb, tag); | |
1143 | return 0; | |
1144 | } | |
1145 | ||
1146 | static int mkv_check_tag(AVDictionary *m) | |
1147 | { | |
1148 | AVDictionaryEntry *t = NULL; | |
1149 | ||
1150 | while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) | |
1151 | if (av_strcasecmp(t->key, "title") && av_strcasecmp(t->key, "stereo_mode")) | |
1152 | return 1; | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int mkv_write_tags(AVFormatContext *s) | |
1158 | { | |
1159 | MatroskaMuxContext *mkv = s->priv_data; | |
1160 | ebml_master tags = {0}; | |
1161 | int i, ret; | |
1162 | ||
1163 | ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL); | |
1164 | ||
1165 | if (mkv_check_tag(s->metadata)) { | |
1166 | ret = mkv_write_tag(s, s->metadata, 0, 0, &tags); | |
1167 | if (ret < 0) return ret; | |
1168 | } | |
1169 | ||
1170 | for (i = 0; i < s->nb_streams; i++) { | |
1171 | AVStream *st = s->streams[i]; | |
1172 | ||
1173 | if (!mkv_check_tag(st->metadata)) | |
1174 | continue; | |
1175 | ||
1176 | ret = mkv_write_tag(s, st->metadata, MATROSKA_ID_TAGTARGETS_TRACKUID, i + 1, &tags); | |
1177 | if (ret < 0) return ret; | |
1178 | } | |
1179 | ||
1180 | for (i = 0; i < s->nb_chapters; i++) { | |
1181 | AVChapter *ch = s->chapters[i]; | |
1182 | ||
1183 | if (!mkv_check_tag(ch->metadata)) | |
1184 | continue; | |
1185 | ||
1186 | ret = mkv_write_tag(s, ch->metadata, MATROSKA_ID_TAGTARGETS_CHAPTERUID, ch->id + mkv->chapter_id_offset, &tags); | |
1187 | if (ret < 0) return ret; | |
1188 | } | |
1189 | ||
1190 | if (tags.pos) | |
1191 | end_ebml_master(s->pb, tags); | |
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | static int mkv_write_attachments(AVFormatContext *s) | |
1196 | { | |
1197 | MatroskaMuxContext *mkv = s->priv_data; | |
1198 | AVIOContext *pb = s->pb; | |
1199 | ebml_master attachments; | |
1200 | AVLFG c; | |
1201 | int i, ret; | |
1202 | ||
1203 | if (!mkv->have_attachments) | |
1204 | return 0; | |
1205 | ||
1206 | av_lfg_init(&c, av_get_random_seed()); | |
1207 | ||
1208 | ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_ATTACHMENTS, avio_tell(pb)); | |
1209 | if (ret < 0) return ret; | |
1210 | ||
1211 | attachments = start_ebml_master(pb, MATROSKA_ID_ATTACHMENTS, 0); | |
1212 | ||
1213 | for (i = 0; i < s->nb_streams; i++) { | |
1214 | AVStream *st = s->streams[i]; | |
1215 | ebml_master attached_file; | |
1216 | AVDictionaryEntry *t; | |
1217 | const char *mimetype = NULL; | |
1218 | uint64_t fileuid; | |
1219 | ||
1220 | if (st->codec->codec_type != AVMEDIA_TYPE_ATTACHMENT) | |
1221 | continue; | |
1222 | ||
1223 | attached_file = start_ebml_master(pb, MATROSKA_ID_ATTACHEDFILE, 0); | |
1224 | ||
1225 | if (t = av_dict_get(st->metadata, "title", NULL, 0)) | |
1226 | put_ebml_string(pb, MATROSKA_ID_FILEDESC, t->value); | |
1227 | if (!(t = av_dict_get(st->metadata, "filename", NULL, 0))) { | |
1228 | av_log(s, AV_LOG_ERROR, "Attachment stream %d has no filename tag.\n", i); | |
1229 | return AVERROR(EINVAL); | |
1230 | } | |
1231 | put_ebml_string(pb, MATROSKA_ID_FILENAME, t->value); | |
1232 | if (t = av_dict_get(st->metadata, "mimetype", NULL, 0)) | |
1233 | mimetype = t->value; | |
1234 | else if (st->codec->codec_id != AV_CODEC_ID_NONE ) { | |
1235 | int i; | |
1236 | for (i = 0; ff_mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++) | |
1237 | if (ff_mkv_mime_tags[i].id == st->codec->codec_id) { | |
1238 | mimetype = ff_mkv_mime_tags[i].str; | |
1239 | break; | |
1240 | } | |
1241 | } | |
1242 | if (!mimetype) { | |
1243 | av_log(s, AV_LOG_ERROR, "Attachment stream %d has no mimetype tag and " | |
1244 | "it cannot be deduced from the codec id.\n", i); | |
1245 | return AVERROR(EINVAL); | |
1246 | } | |
1247 | ||
1248 | if (s->flags & AVFMT_FLAG_BITEXACT) { | |
1249 | struct AVSHA *sha = av_sha_alloc(); | |
1250 | uint8_t digest[20]; | |
1251 | if (!sha) | |
1252 | return AVERROR(ENOMEM); | |
1253 | av_sha_init(sha, 160); | |
1254 | av_sha_update(sha, st->codec->extradata, st->codec->extradata_size); | |
1255 | av_sha_final(sha, digest); | |
1256 | av_free(sha); | |
1257 | fileuid = AV_RL64(digest); | |
1258 | } else { | |
1259 | fileuid = av_lfg_get(&c); | |
1260 | } | |
1261 | av_log(s, AV_LOG_VERBOSE, "Using %.16"PRIx64" for attachment %d\n", | |
1262 | fileuid, i); | |
1263 | ||
1264 | put_ebml_string(pb, MATROSKA_ID_FILEMIMETYPE, mimetype); | |
1265 | put_ebml_binary(pb, MATROSKA_ID_FILEDATA, st->codec->extradata, st->codec->extradata_size); | |
1266 | put_ebml_uint(pb, MATROSKA_ID_FILEUID, fileuid); | |
1267 | end_ebml_master(pb, attached_file); | |
1268 | } | |
1269 | end_ebml_master(pb, attachments); | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | static int mkv_write_header(AVFormatContext *s) | |
1275 | { | |
1276 | MatroskaMuxContext *mkv = s->priv_data; | |
1277 | AVIOContext *pb = s->pb; | |
1278 | ebml_master ebml_header, segment_info; | |
1279 | AVDictionaryEntry *tag; | |
1280 | int ret, i, version = 2; | |
1281 | ||
1282 | if (!strcmp(s->oformat->name, "webm")) | |
1283 | mkv->mode = MODE_WEBM; | |
1284 | else | |
1285 | mkv->mode = MODE_MATROSKAv2; | |
1286 | ||
1287 | if (s->avoid_negative_ts < 0) | |
1288 | s->avoid_negative_ts = 1; | |
1289 | ||
1290 | if (mkv->mode != MODE_WEBM || | |
1291 | av_dict_get(s->metadata, "stereo_mode", NULL, 0) || | |
1292 | av_dict_get(s->metadata, "alpha_mode", NULL, 0)) | |
1293 | version = 4; | |
1294 | ||
1295 | for (i = 0; i < s->nb_streams; i++) { | |
1296 | if (s->streams[i]->codec->codec_id == AV_CODEC_ID_ATRAC3 || | |
1297 | s->streams[i]->codec->codec_id == AV_CODEC_ID_COOK || | |
1298 | s->streams[i]->codec->codec_id == AV_CODEC_ID_RA_288 || | |
1299 | s->streams[i]->codec->codec_id == AV_CODEC_ID_SIPR || | |
1300 | s->streams[i]->codec->codec_id == AV_CODEC_ID_RV10 || | |
1301 | s->streams[i]->codec->codec_id == AV_CODEC_ID_RV20) { | |
1302 | av_log(s, AV_LOG_ERROR, | |
1303 | "The Matroska muxer does not yet support muxing %s\n", | |
1304 | avcodec_get_name(s->streams[i]->codec->codec_id)); | |
1305 | return AVERROR_PATCHWELCOME; | |
1306 | } | |
1307 | if (s->streams[i]->codec->codec_id == AV_CODEC_ID_OPUS || | |
1308 | av_dict_get(s->streams[i]->metadata, "stereo_mode", NULL, 0) || | |
1309 | av_dict_get(s->streams[i]->metadata, "alpha_mode", NULL, 0)) | |
1310 | version = 4; | |
1311 | } | |
1312 | ||
1313 | mkv->tracks = av_mallocz_array(s->nb_streams, sizeof(*mkv->tracks)); | |
1314 | if (!mkv->tracks) | |
1315 | return AVERROR(ENOMEM); | |
1316 | ||
1317 | ebml_header = start_ebml_master(pb, EBML_ID_HEADER, 0); | |
1318 | put_ebml_uint (pb, EBML_ID_EBMLVERSION , 1); | |
1319 | put_ebml_uint (pb, EBML_ID_EBMLREADVERSION , 1); | |
1320 | put_ebml_uint (pb, EBML_ID_EBMLMAXIDLENGTH , 4); | |
1321 | put_ebml_uint (pb, EBML_ID_EBMLMAXSIZELENGTH , 8); | |
1322 | put_ebml_string (pb, EBML_ID_DOCTYPE , s->oformat->name); | |
1323 | put_ebml_uint (pb, EBML_ID_DOCTYPEVERSION , version); | |
1324 | put_ebml_uint (pb, EBML_ID_DOCTYPEREADVERSION , 2); | |
1325 | end_ebml_master(pb, ebml_header); | |
1326 | ||
1327 | mkv->segment = start_ebml_master(pb, MATROSKA_ID_SEGMENT, 0); | |
1328 | mkv->segment_offset = avio_tell(pb); | |
1329 | ||
1330 | // we write 2 seek heads - one at the end of the file to point to each | |
1331 | // cluster, and one at the beginning to point to all other level one | |
1332 | // elements (including the seek head at the end of the file), which | |
1333 | // isn't more than 10 elements if we only write one of each other | |
1334 | // currently defined level 1 element | |
1335 | mkv->main_seekhead = mkv_start_seekhead(pb, mkv->segment_offset, 10); | |
1336 | if (!mkv->main_seekhead) | |
1337 | return AVERROR(ENOMEM); | |
1338 | ||
1339 | ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_INFO, avio_tell(pb)); | |
1340 | if (ret < 0) return ret; | |
1341 | ||
1342 | segment_info = start_ebml_master(pb, MATROSKA_ID_INFO, 0); | |
1343 | put_ebml_uint(pb, MATROSKA_ID_TIMECODESCALE, 1000000); | |
1344 | if ((tag = av_dict_get(s->metadata, "title", NULL, 0))) | |
1345 | put_ebml_string(pb, MATROSKA_ID_TITLE, tag->value); | |
1346 | if (!(s->flags & AVFMT_FLAG_BITEXACT)) { | |
1347 | uint32_t segment_uid[4]; | |
1348 | AVLFG lfg; | |
1349 | ||
1350 | av_lfg_init(&lfg, av_get_random_seed()); | |
1351 | ||
1352 | for (i = 0; i < 4; i++) | |
1353 | segment_uid[i] = av_lfg_get(&lfg); | |
1354 | ||
1355 | put_ebml_string(pb, MATROSKA_ID_MUXINGAPP, LIBAVFORMAT_IDENT); | |
1356 | if ((tag = av_dict_get(s->metadata, "encoding_tool", NULL, 0))) | |
1357 | put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, tag->value); | |
1358 | else | |
1359 | put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, LIBAVFORMAT_IDENT); | |
1360 | put_ebml_binary(pb, MATROSKA_ID_SEGMENTUID, segment_uid, 16); | |
1361 | } else { | |
1362 | const char *ident = "Lavf"; | |
1363 | put_ebml_string(pb, MATROSKA_ID_MUXINGAPP , ident); | |
1364 | put_ebml_string(pb, MATROSKA_ID_WRITINGAPP, ident); | |
1365 | } | |
1366 | ||
1367 | if (tag = av_dict_get(s->metadata, "creation_time", NULL, 0)) { | |
1368 | // Adjust time so it's relative to 2001-01-01 and convert to nanoseconds. | |
1369 | int64_t date_utc = (ff_iso8601_to_unix_time(tag->value) - 978307200) * 1000000000; | |
1370 | uint8_t date_utc_buf[8]; | |
1371 | AV_WB64(date_utc_buf, date_utc); | |
1372 | put_ebml_binary(pb, MATROSKA_ID_DATEUTC, date_utc_buf, 8); | |
1373 | } | |
1374 | ||
1375 | // reserve space for the duration | |
1376 | mkv->duration = 0; | |
1377 | mkv->duration_offset = avio_tell(pb); | |
1378 | put_ebml_void(pb, 11); // assumes double-precision float to be written | |
1379 | end_ebml_master(pb, segment_info); | |
1380 | ||
1381 | ret = mkv_write_tracks(s); | |
1382 | if (ret < 0) | |
1383 | return ret; | |
1384 | ||
1385 | for (i = 0; i < s->nb_chapters; i++) | |
1386 | mkv->chapter_id_offset = FFMAX(mkv->chapter_id_offset, 1LL - s->chapters[i]->id); | |
1387 | ||
1388 | if (mkv->mode != MODE_WEBM) { | |
1389 | ret = mkv_write_chapters(s); | |
1390 | if (ret < 0) | |
1391 | return ret; | |
1392 | ||
1393 | ret = mkv_write_tags(s); | |
1394 | if (ret < 0) | |
1395 | return ret; | |
1396 | ||
1397 | ret = mkv_write_attachments(s); | |
1398 | if (ret < 0) | |
1399 | return ret; | |
1400 | } | |
1401 | ||
1402 | if (!s->pb->seekable) | |
1403 | mkv_write_seekhead(pb, mkv->main_seekhead); | |
1404 | ||
1405 | mkv->cues = mkv_start_cues(mkv->segment_offset); | |
1406 | if (!mkv->cues) | |
1407 | return AVERROR(ENOMEM); | |
1408 | ||
1409 | if (pb->seekable && mkv->reserve_cues_space) { | |
1410 | mkv->cues_pos = avio_tell(pb); | |
1411 | put_ebml_void(pb, mkv->reserve_cues_space); | |
1412 | } | |
1413 | ||
1414 | av_init_packet(&mkv->cur_audio_pkt); | |
1415 | mkv->cur_audio_pkt.size = 0; | |
1416 | mkv->cluster_pos = -1; | |
1417 | ||
1418 | avio_flush(pb); | |
1419 | ||
1420 | // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or | |
1421 | // after 4k and on a keyframe | |
1422 | if (pb->seekable) { | |
1423 | if (mkv->cluster_time_limit < 0) | |
1424 | mkv->cluster_time_limit = 5000; | |
1425 | if (mkv->cluster_size_limit < 0) | |
1426 | mkv->cluster_size_limit = 5 * 1024 * 1024; | |
1427 | } else { | |
1428 | if (mkv->cluster_time_limit < 0) | |
1429 | mkv->cluster_time_limit = 1000; | |
1430 | if (mkv->cluster_size_limit < 0) | |
1431 | mkv->cluster_size_limit = 32 * 1024; | |
1432 | } | |
1433 | ||
1434 | return 0; | |
1435 | } | |
1436 | ||
1437 | static int mkv_blockgroup_size(int pkt_size) | |
1438 | { | |
1439 | int size = pkt_size + 4; | |
1440 | size += ebml_num_size(size); | |
1441 | size += 2; // EBML ID for block and block duration | |
1442 | size += 8; // max size of block duration | |
1443 | size += ebml_num_size(size); | |
1444 | size += 1; // blockgroup EBML ID | |
1445 | return size; | |
1446 | } | |
1447 | ||
1448 | static int mkv_strip_wavpack(const uint8_t *src, uint8_t **pdst, int *size) | |
1449 | { | |
1450 | uint8_t *dst; | |
1451 | int srclen = *size; | |
1452 | int offset = 0; | |
1453 | int ret; | |
1454 | ||
1455 | dst = av_malloc(srclen); | |
1456 | if (!dst) | |
1457 | return AVERROR(ENOMEM); | |
1458 | ||
1459 | while (srclen >= WV_HEADER_SIZE) { | |
1460 | WvHeader header; | |
1461 | ||
1462 | ret = ff_wv_parse_header(&header, src); | |
1463 | if (ret < 0) | |
1464 | goto fail; | |
1465 | src += WV_HEADER_SIZE; | |
1466 | srclen -= WV_HEADER_SIZE; | |
1467 | ||
1468 | if (srclen < header.blocksize) { | |
1469 | ret = AVERROR_INVALIDDATA; | |
1470 | goto fail; | |
1471 | } | |
1472 | ||
1473 | if (header.initial) { | |
1474 | AV_WL32(dst + offset, header.samples); | |
1475 | offset += 4; | |
1476 | } | |
1477 | AV_WL32(dst + offset, header.flags); | |
1478 | AV_WL32(dst + offset + 4, header.crc); | |
1479 | offset += 8; | |
1480 | ||
1481 | if (!(header.initial && header.final)) { | |
1482 | AV_WL32(dst + offset, header.blocksize); | |
1483 | offset += 4; | |
1484 | } | |
1485 | ||
1486 | memcpy(dst + offset, src, header.blocksize); | |
1487 | src += header.blocksize; | |
1488 | srclen -= header.blocksize; | |
1489 | offset += header.blocksize; | |
1490 | } | |
1491 | ||
1492 | *pdst = dst; | |
1493 | *size = offset; | |
1494 | ||
1495 | return 0; | |
1496 | fail: | |
1497 | av_freep(&dst); | |
1498 | return ret; | |
1499 | } | |
1500 | ||
1501 | static void mkv_write_block(AVFormatContext *s, AVIOContext *pb, | |
1502 | unsigned int blockid, AVPacket *pkt, int flags) | |
1503 | { | |
1504 | MatroskaMuxContext *mkv = s->priv_data; | |
1505 | AVCodecContext *codec = s->streams[pkt->stream_index]->codec; | |
1506 | uint8_t *data = NULL, *side_data = NULL; | |
1507 | int offset = 0, size = pkt->size, side_data_size = 0; | |
1508 | int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; | |
1509 | uint64_t additional_id = 0; | |
1510 | int64_t discard_padding = 0; | |
1511 | ebml_master block_group, block_additions, block_more; | |
1512 | ||
1513 | av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, " | |
1514 | "pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n", | |
1515 | avio_tell(pb), pkt->size, pkt->pts, pkt->dts, pkt->duration, flags); | |
1516 | if (codec->codec_id == AV_CODEC_ID_H264 && codec->extradata_size > 0 && | |
1517 | (AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1)) | |
1518 | ff_avc_parse_nal_units_buf(pkt->data, &data, &size); | |
1519 | else if (codec->codec_id == AV_CODEC_ID_HEVC && codec->extradata_size > 6 && | |
1520 | (AV_RB24(codec->extradata) == 1 || AV_RB32(codec->extradata) == 1)) | |
1521 | /* extradata is Annex B, assume the bitstream is too and convert it */ | |
1522 | ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL); | |
1523 | else if (codec->codec_id == AV_CODEC_ID_WAVPACK) { | |
1524 | int ret = mkv_strip_wavpack(pkt->data, &data, &size); | |
1525 | if (ret < 0) { | |
1526 | av_log(s, AV_LOG_ERROR, "Error stripping a WavPack packet.\n"); | |
1527 | return; | |
1528 | } | |
1529 | } else | |
1530 | data = pkt->data; | |
1531 | ||
1532 | if (codec->codec_id == AV_CODEC_ID_PRORES) { | |
1533 | /* Matroska specification requires to remove the first QuickTime atom | |
1534 | */ | |
1535 | size -= 8; | |
1536 | offset = 8; | |
1537 | } | |
1538 | ||
1539 | side_data = av_packet_get_side_data(pkt, | |
1540 | AV_PKT_DATA_SKIP_SAMPLES, | |
1541 | &side_data_size); | |
1542 | ||
1543 | if (side_data && side_data_size >= 10) { | |
1544 | discard_padding = av_rescale_q(AV_RL32(side_data + 4), | |
1545 | (AVRational){1, codec->sample_rate}, | |
1546 | (AVRational){1, 1000000000}); | |
1547 | } | |
1548 | ||
1549 | side_data = av_packet_get_side_data(pkt, | |
1550 | AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, | |
1551 | &side_data_size); | |
1552 | if (side_data) { | |
1553 | additional_id = AV_RB64(side_data); | |
1554 | side_data += 8; | |
1555 | side_data_size -= 8; | |
1556 | } | |
1557 | ||
1558 | if ((side_data_size && additional_id == 1) || discard_padding) { | |
1559 | block_group = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, 0); | |
1560 | blockid = MATROSKA_ID_BLOCK; | |
1561 | } | |
1562 | ||
1563 | put_ebml_id(pb, blockid); | |
1564 | put_ebml_num(pb, size + 4, 0); | |
1565 | // this assumes stream_index is less than 126 | |
1566 | avio_w8(pb, 0x80 | (mkv->is_dash ? mkv->dash_track_number : (pkt->stream_index + 1))); | |
1567 | avio_wb16(pb, ts - mkv->cluster_pts); | |
1568 | avio_w8(pb, flags); | |
1569 | avio_write(pb, data + offset, size); | |
1570 | if (data != pkt->data) | |
1571 | av_free(data); | |
1572 | ||
1573 | if (discard_padding) { | |
1574 | put_ebml_sint(pb, MATROSKA_ID_DISCARDPADDING, discard_padding); | |
1575 | } | |
1576 | ||
1577 | if (side_data_size && additional_id == 1) { | |
1578 | block_additions = start_ebml_master(pb, MATROSKA_ID_BLOCKADDITIONS, 0); | |
1579 | block_more = start_ebml_master(pb, MATROSKA_ID_BLOCKMORE, 0); | |
1580 | put_ebml_uint(pb, MATROSKA_ID_BLOCKADDID, 1); | |
1581 | put_ebml_id(pb, MATROSKA_ID_BLOCKADDITIONAL); | |
1582 | put_ebml_num(pb, side_data_size, 0); | |
1583 | avio_write(pb, side_data, side_data_size); | |
1584 | end_ebml_master(pb, block_more); | |
1585 | end_ebml_master(pb, block_additions); | |
1586 | } | |
1587 | if ((side_data_size && additional_id == 1) || discard_padding) { | |
1588 | end_ebml_master(pb, block_group); | |
1589 | } | |
1590 | } | |
1591 | ||
1592 | static int srt_get_duration(uint8_t **buf) | |
1593 | { | |
1594 | int i, duration = 0; | |
1595 | ||
1596 | for (i = 0; i < 2 && !duration; i++) { | |
1597 | int s_hour, s_min, s_sec, s_hsec, e_hour, e_min, e_sec, e_hsec; | |
1598 | if (sscanf(*buf, "%d:%2d:%2d%*1[,.]%3d --> %d:%2d:%2d%*1[,.]%3d", | |
1599 | &s_hour, &s_min, &s_sec, &s_hsec, | |
1600 | &e_hour, &e_min, &e_sec, &e_hsec) == 8) { | |
1601 | s_min += 60 * s_hour; | |
1602 | e_min += 60 * e_hour; | |
1603 | s_sec += 60 * s_min; | |
1604 | ||
1605 | e_sec += 60 * e_min; | |
1606 | s_hsec += 1000 * s_sec; | |
1607 | e_hsec += 1000 * e_sec; | |
1608 | ||
1609 | duration = e_hsec - s_hsec; | |
1610 | } | |
1611 | *buf += ff_subtitles_next_line(*buf); | |
1612 | } | |
1613 | return duration; | |
1614 | } | |
1615 | ||
1616 | static int mkv_write_srt_blocks(AVFormatContext *s, AVIOContext *pb, | |
1617 | AVPacket *pkt) | |
1618 | { | |
1619 | ebml_master blockgroup; | |
1620 | AVPacket pkt2 = *pkt; | |
1621 | int64_t duration = srt_get_duration(&pkt2.data); | |
1622 | pkt2.size -= pkt2.data - pkt->data; | |
1623 | ||
1624 | blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, | |
1625 | mkv_blockgroup_size(pkt2.size)); | |
1626 | mkv_write_block(s, pb, MATROSKA_ID_BLOCK, &pkt2, 0); | |
1627 | put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); | |
1628 | end_ebml_master(pb, blockgroup); | |
1629 | ||
1630 | return duration; | |
1631 | } | |
1632 | ||
1633 | static int mkv_write_vtt_blocks(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt) | |
1634 | { | |
1635 | MatroskaMuxContext *mkv = s->priv_data; | |
1636 | ebml_master blockgroup; | |
1637 | int id_size, settings_size, size; | |
1638 | uint8_t *id, *settings; | |
1639 | int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; | |
1640 | const int flags = 0; | |
1641 | ||
1642 | id_size = 0; | |
1643 | id = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_IDENTIFIER, | |
1644 | &id_size); | |
1645 | ||
1646 | settings_size = 0; | |
1647 | settings = av_packet_get_side_data(pkt, AV_PKT_DATA_WEBVTT_SETTINGS, | |
1648 | &settings_size); | |
1649 | ||
1650 | size = id_size + 1 + settings_size + 1 + pkt->size; | |
1651 | ||
1652 | av_log(s, AV_LOG_DEBUG, "Writing block at offset %" PRIu64 ", size %d, " | |
1653 | "pts %" PRId64 ", dts %" PRId64 ", duration %d, flags %d\n", | |
1654 | avio_tell(pb), size, pkt->pts, pkt->dts, pkt->duration, flags); | |
1655 | ||
1656 | blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, mkv_blockgroup_size(size)); | |
1657 | ||
1658 | put_ebml_id(pb, MATROSKA_ID_BLOCK); | |
1659 | put_ebml_num(pb, size + 4, 0); | |
1660 | avio_w8(pb, 0x80 | (pkt->stream_index + 1)); // this assumes stream_index is less than 126 | |
1661 | avio_wb16(pb, ts - mkv->cluster_pts); | |
1662 | avio_w8(pb, flags); | |
1663 | avio_printf(pb, "%.*s\n%.*s\n%.*s", id_size, id, settings_size, settings, pkt->size, pkt->data); | |
1664 | ||
1665 | put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, pkt->duration); | |
1666 | end_ebml_master(pb, blockgroup); | |
1667 | ||
1668 | return pkt->duration; | |
1669 | } | |
1670 | ||
1671 | static void mkv_flush_dynbuf(AVFormatContext *s) | |
1672 | { | |
1673 | MatroskaMuxContext *mkv = s->priv_data; | |
1674 | int bufsize; | |
1675 | uint8_t *dyn_buf; | |
1676 | ||
1677 | if (!mkv->dyn_bc) | |
1678 | return; | |
1679 | ||
1680 | bufsize = avio_close_dyn_buf(mkv->dyn_bc, &dyn_buf); | |
1681 | avio_write(s->pb, dyn_buf, bufsize); | |
1682 | av_free(dyn_buf); | |
1683 | mkv->dyn_bc = NULL; | |
1684 | } | |
1685 | ||
1686 | static void mkv_start_new_cluster(AVFormatContext *s, AVPacket *pkt) | |
1687 | { | |
1688 | MatroskaMuxContext *mkv = s->priv_data; | |
1689 | AVIOContext *pb; | |
1690 | ||
1691 | if (s->pb->seekable) { | |
1692 | pb = s->pb; | |
1693 | } else { | |
1694 | pb = mkv->dyn_bc; | |
1695 | } | |
1696 | ||
1697 | av_log(s, AV_LOG_DEBUG, | |
1698 | "Starting new cluster at offset %" PRIu64 " bytes, " | |
1699 | "pts %" PRIu64 "dts %" PRIu64 "\n", | |
1700 | avio_tell(pb), pkt->pts, pkt->dts); | |
1701 | end_ebml_master(pb, mkv->cluster); | |
1702 | mkv->cluster_pos = -1; | |
1703 | if (mkv->dyn_bc) | |
1704 | mkv_flush_dynbuf(s); | |
1705 | avio_flush(s->pb); | |
1706 | } | |
1707 | ||
1708 | static int mkv_write_packet_internal(AVFormatContext *s, AVPacket *pkt, int add_cue) | |
1709 | { | |
1710 | MatroskaMuxContext *mkv = s->priv_data; | |
1711 | AVIOContext *pb = s->pb; | |
1712 | AVCodecContext *codec = s->streams[pkt->stream_index]->codec; | |
1713 | int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY); | |
1714 | int duration = pkt->duration; | |
1715 | int ret; | |
1716 | int64_t ts = mkv->tracks[pkt->stream_index].write_dts ? pkt->dts : pkt->pts; | |
1717 | int64_t relative_packet_pos; | |
1718 | int dash_tracknum = mkv->is_dash ? mkv->dash_track_number : pkt->stream_index + 1; | |
1719 | ||
1720 | if (ts == AV_NOPTS_VALUE) { | |
1721 | av_log(s, AV_LOG_ERROR, "Can't write packet with unknown timestamp\n"); | |
1722 | return AVERROR(EINVAL); | |
1723 | } | |
1724 | ts += mkv->tracks[pkt->stream_index].ts_offset; | |
1725 | ||
1726 | if (mkv->cluster_pos != -1) { | |
1727 | int64_t cluster_time = ts - mkv->cluster_pts + mkv->tracks[pkt->stream_index].ts_offset; | |
1728 | if ((int16_t)cluster_time != cluster_time) { | |
1729 | av_log(s, AV_LOG_WARNING, "Starting new cluster due to timestamp\n"); | |
1730 | mkv_start_new_cluster(s, pkt); | |
1731 | } | |
1732 | } | |
1733 | ||
1734 | if (!s->pb->seekable) { | |
1735 | if (!mkv->dyn_bc) { | |
1736 | if ((ret = avio_open_dyn_buf(&mkv->dyn_bc)) < 0) { | |
1737 | av_log(s, AV_LOG_ERROR, "Failed to open dynamic buffer\n"); | |
1738 | return ret; | |
1739 | } | |
1740 | } | |
1741 | pb = mkv->dyn_bc; | |
1742 | } | |
1743 | ||
1744 | if (mkv->cluster_pos == -1) { | |
1745 | mkv->cluster_pos = avio_tell(s->pb); | |
1746 | mkv->cluster = start_ebml_master(pb, MATROSKA_ID_CLUSTER, 0); | |
1747 | put_ebml_uint(pb, MATROSKA_ID_CLUSTERTIMECODE, FFMAX(0, ts)); | |
1748 | mkv->cluster_pts = FFMAX(0, ts); | |
1749 | } | |
1750 | ||
1751 | relative_packet_pos = avio_tell(s->pb) - mkv->cluster.pos; | |
1752 | ||
1753 | if (codec->codec_type != AVMEDIA_TYPE_SUBTITLE) { | |
1754 | mkv_write_block(s, pb, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe << 7); | |
1755 | if (codec->codec_type == AVMEDIA_TYPE_VIDEO && keyframe || add_cue) { | |
1756 | ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, mkv->cluster_pos, relative_packet_pos, -1); | |
1757 | if (ret < 0) return ret; | |
1758 | } | |
1759 | } else { | |
1760 | if (codec->codec_id == AV_CODEC_ID_SRT) { | |
1761 | duration = mkv_write_srt_blocks(s, pb, pkt); | |
1762 | } else if (codec->codec_id == AV_CODEC_ID_WEBVTT) { | |
1763 | duration = mkv_write_vtt_blocks(s, pb, pkt); | |
1764 | } else { | |
1765 | ebml_master blockgroup = start_ebml_master(pb, MATROSKA_ID_BLOCKGROUP, | |
1766 | mkv_blockgroup_size(pkt->size)); | |
1767 | /* For backward compatibility, prefer convergence_duration. */ | |
1768 | if (pkt->convergence_duration > 0) { | |
1769 | duration = pkt->convergence_duration; | |
1770 | } | |
1771 | mkv_write_block(s, pb, MATROSKA_ID_BLOCK, pkt, 0); | |
1772 | put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); | |
1773 | end_ebml_master(pb, blockgroup); | |
1774 | } | |
1775 | ||
1776 | ret = mkv_add_cuepoint(mkv->cues, pkt->stream_index, dash_tracknum, ts, | |
1777 | mkv->cluster_pos, relative_packet_pos, duration); | |
1778 | if (ret < 0) | |
1779 | return ret; | |
1780 | } | |
1781 | ||
1782 | mkv->duration = FFMAX(mkv->duration, ts + duration); | |
1783 | return 0; | |
1784 | } | |
1785 | ||
1786 | static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt) | |
1787 | { | |
1788 | MatroskaMuxContext *mkv = s->priv_data; | |
1789 | int codec_type = s->streams[pkt->stream_index]->codec->codec_type; | |
1790 | int keyframe = !!(pkt->flags & AV_PKT_FLAG_KEY); | |
1791 | int cluster_size; | |
1792 | int64_t cluster_time; | |
1793 | int ret; | |
1794 | int start_new_cluster; | |
1795 | ||
1796 | if (mkv->tracks[pkt->stream_index].write_dts) | |
1797 | cluster_time = pkt->dts - mkv->cluster_pts; | |
1798 | else | |
1799 | cluster_time = pkt->pts - mkv->cluster_pts; | |
1800 | cluster_time += mkv->tracks[pkt->stream_index].ts_offset; | |
1801 | ||
1802 | // start a new cluster every 5 MB or 5 sec, or 32k / 1 sec for streaming or | |
1803 | // after 4k and on a keyframe | |
1804 | if (s->pb->seekable) { | |
1805 | cluster_size = avio_tell(s->pb) - mkv->cluster_pos; | |
1806 | } else { | |
1807 | cluster_size = avio_tell(mkv->dyn_bc); | |
1808 | } | |
1809 | ||
1810 | if (mkv->is_dash && codec_type == AVMEDIA_TYPE_VIDEO) { | |
1811 | // WebM DASH specification states that the first block of every cluster | |
1812 | // has to be a key frame. So for DASH video, we only create a cluster | |
1813 | // on seeing key frames. | |
1814 | start_new_cluster = keyframe; | |
1815 | } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO && | |
1816 | cluster_time > mkv->cluster_time_limit) { | |
1817 | // For DASH audio, we create a Cluster based on cluster_time_limit | |
1818 | start_new_cluster = 1; | |
1819 | } else if (!mkv->is_dash && | |
1820 | (cluster_size > mkv->cluster_size_limit || | |
1821 | cluster_time > mkv->cluster_time_limit || | |
1822 | (codec_type == AVMEDIA_TYPE_VIDEO && keyframe && | |
1823 | cluster_size > 4 * 1024))) { | |
1824 | start_new_cluster = 1; | |
1825 | } else { | |
1826 | start_new_cluster = 0; | |
1827 | } | |
1828 | ||
1829 | if (mkv->cluster_pos != -1 && start_new_cluster) { | |
1830 | mkv_start_new_cluster(s, pkt); | |
1831 | } | |
1832 | ||
1833 | // check if we have an audio packet cached | |
1834 | if (mkv->cur_audio_pkt.size > 0) { | |
1835 | // for DASH audio, a CuePoint has to be added when there is a new cluster. | |
1836 | ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, | |
1837 | mkv->is_dash ? start_new_cluster : 0); | |
1838 | av_free_packet(&mkv->cur_audio_pkt); | |
1839 | if (ret < 0) { | |
1840 | av_log(s, AV_LOG_ERROR, | |
1841 | "Could not write cached audio packet ret:%d\n", ret); | |
1842 | return ret; | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | // buffer an audio packet to ensure the packet containing the video | |
1847 | // keyframe's timecode is contained in the same cluster for WebM | |
1848 | if (codec_type == AVMEDIA_TYPE_AUDIO) { | |
1849 | mkv->cur_audio_pkt = *pkt; | |
1850 | if (pkt->buf) { | |
1851 | mkv->cur_audio_pkt.buf = av_buffer_ref(pkt->buf); | |
1852 | ret = mkv->cur_audio_pkt.buf ? 0 : AVERROR(ENOMEM); | |
1853 | } else | |
1854 | ret = av_dup_packet(&mkv->cur_audio_pkt); | |
1855 | if (mkv->cur_audio_pkt.side_data_elems > 0) { | |
1856 | ret = av_copy_packet_side_data(&mkv->cur_audio_pkt, &mkv->cur_audio_pkt); | |
1857 | } | |
1858 | } else | |
1859 | ret = mkv_write_packet_internal(s, pkt, 0); | |
1860 | return ret; | |
1861 | } | |
1862 | ||
1863 | static int mkv_write_flush_packet(AVFormatContext *s, AVPacket *pkt) | |
1864 | { | |
1865 | MatroskaMuxContext *mkv = s->priv_data; | |
1866 | AVIOContext *pb; | |
1867 | if (s->pb->seekable) | |
1868 | pb = s->pb; | |
1869 | else | |
1870 | pb = mkv->dyn_bc; | |
1871 | if (!pkt) { | |
1872 | if (mkv->cluster_pos != -1) { | |
1873 | av_log(s, AV_LOG_DEBUG, | |
1874 | "Flushing cluster at offset %" PRIu64 " bytes\n", | |
1875 | avio_tell(pb)); | |
1876 | end_ebml_master(pb, mkv->cluster); | |
1877 | mkv->cluster_pos = -1; | |
1878 | if (mkv->dyn_bc) | |
1879 | mkv_flush_dynbuf(s); | |
1880 | avio_flush(s->pb); | |
1881 | } | |
1882 | return 0; | |
1883 | } | |
1884 | return mkv_write_packet(s, pkt); | |
1885 | } | |
1886 | ||
1887 | static int mkv_write_trailer(AVFormatContext *s) | |
1888 | { | |
1889 | MatroskaMuxContext *mkv = s->priv_data; | |
1890 | AVIOContext *pb = s->pb; | |
1891 | int64_t currentpos, cuespos; | |
1892 | int ret; | |
1893 | ||
1894 | // check if we have an audio packet cached | |
1895 | if (mkv->cur_audio_pkt.size > 0) { | |
1896 | ret = mkv_write_packet_internal(s, &mkv->cur_audio_pkt, 0); | |
1897 | av_free_packet(&mkv->cur_audio_pkt); | |
1898 | if (ret < 0) { | |
1899 | av_log(s, AV_LOG_ERROR, | |
1900 | "Could not write cached audio packet ret:%d\n", ret); | |
1901 | return ret; | |
1902 | } | |
1903 | } | |
1904 | ||
1905 | if (mkv->dyn_bc) { | |
1906 | end_ebml_master(mkv->dyn_bc, mkv->cluster); | |
1907 | mkv_flush_dynbuf(s); | |
1908 | } else if (mkv->cluster_pos != -1) { | |
1909 | end_ebml_master(pb, mkv->cluster); | |
1910 | } | |
1911 | ||
1912 | if (mkv->mode != MODE_WEBM) { | |
1913 | ret = mkv_write_chapters(s); | |
1914 | if (ret < 0) | |
1915 | return ret; | |
1916 | } | |
1917 | ||
1918 | if (pb->seekable) { | |
1919 | if (mkv->cues->num_entries) { | |
1920 | if (mkv->reserve_cues_space) { | |
1921 | int64_t cues_end; | |
1922 | ||
1923 | currentpos = avio_tell(pb); | |
1924 | avio_seek(pb, mkv->cues_pos, SEEK_SET); | |
1925 | ||
1926 | cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams); | |
1927 | cues_end = avio_tell(pb); | |
1928 | if (cues_end > cuespos + mkv->reserve_cues_space) { | |
1929 | av_log(s, AV_LOG_ERROR, | |
1930 | "Insufficient space reserved for cues: %d " | |
1931 | "(needed: %" PRId64 ").\n", | |
1932 | mkv->reserve_cues_space, cues_end - cuespos); | |
1933 | return AVERROR(EINVAL); | |
1934 | } | |
1935 | ||
1936 | if (cues_end < cuespos + mkv->reserve_cues_space) | |
1937 | put_ebml_void(pb, mkv->reserve_cues_space - | |
1938 | (cues_end - cuespos)); | |
1939 | ||
1940 | avio_seek(pb, currentpos, SEEK_SET); | |
1941 | } else { | |
1942 | cuespos = mkv_write_cues(s, mkv->cues, mkv->tracks, s->nb_streams); | |
1943 | } | |
1944 | ||
1945 | ret = mkv_add_seekhead_entry(mkv->main_seekhead, MATROSKA_ID_CUES, | |
1946 | cuespos); | |
1947 | if (ret < 0) | |
1948 | return ret; | |
1949 | } | |
1950 | ||
1951 | mkv_write_seekhead(pb, mkv->main_seekhead); | |
1952 | ||
1953 | // update the duration | |
1954 | av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration); | |
1955 | currentpos = avio_tell(pb); | |
1956 | avio_seek(pb, mkv->duration_offset, SEEK_SET); | |
1957 | put_ebml_float(pb, MATROSKA_ID_DURATION, mkv->duration); | |
1958 | ||
1959 | avio_seek(pb, currentpos, SEEK_SET); | |
1960 | } | |
1961 | ||
1962 | end_ebml_master(pb, mkv->segment); | |
1963 | av_freep(&mkv->tracks); | |
1964 | av_freep(&mkv->cues->entries); | |
1965 | av_freep(&mkv->cues); | |
1966 | ||
1967 | return 0; | |
1968 | } | |
1969 | ||
1970 | static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance) | |
1971 | { | |
1972 | int i; | |
1973 | for (i = 0; ff_mkv_codec_tags[i].id != AV_CODEC_ID_NONE; i++) | |
1974 | if (ff_mkv_codec_tags[i].id == codec_id) | |
1975 | return 1; | |
1976 | ||
1977 | if (std_compliance < FF_COMPLIANCE_NORMAL) { | |
1978 | enum AVMediaType type = avcodec_get_type(codec_id); | |
1979 | // mkv theoretically supports any video/audio through VFW/ACM | |
1980 | if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO) | |
1981 | return 1; | |
1982 | } | |
1983 | ||
1984 | return 0; | |
1985 | } | |
1986 | ||
1987 | static const AVCodecTag additional_audio_tags[] = { | |
1988 | { AV_CODEC_ID_ALAC, 0XFFFFFFFF }, | |
1989 | { AV_CODEC_ID_EAC3, 0XFFFFFFFF }, | |
1990 | { AV_CODEC_ID_MLP, 0xFFFFFFFF }, | |
1991 | { AV_CODEC_ID_OPUS, 0xFFFFFFFF }, | |
1992 | { AV_CODEC_ID_PCM_S16BE, 0xFFFFFFFF }, | |
1993 | { AV_CODEC_ID_PCM_S24BE, 0xFFFFFFFF }, | |
1994 | { AV_CODEC_ID_PCM_S32BE, 0xFFFFFFFF }, | |
1995 | { AV_CODEC_ID_QDM2, 0xFFFFFFFF }, | |
1996 | { AV_CODEC_ID_RA_144, 0xFFFFFFFF }, | |
1997 | { AV_CODEC_ID_RA_288, 0xFFFFFFFF }, | |
1998 | { AV_CODEC_ID_COOK, 0xFFFFFFFF }, | |
1999 | { AV_CODEC_ID_TRUEHD, 0xFFFFFFFF }, | |
2000 | { AV_CODEC_ID_NONE, 0xFFFFFFFF } | |
2001 | }; | |
2002 | ||
2003 | static const AVCodecTag additional_video_tags[] = { | |
2004 | { AV_CODEC_ID_RV10, 0xFFFFFFFF }, | |
2005 | { AV_CODEC_ID_RV20, 0xFFFFFFFF }, | |
2006 | { AV_CODEC_ID_RV30, 0xFFFFFFFF }, | |
2007 | { AV_CODEC_ID_RV40, 0xFFFFFFFF }, | |
2008 | { AV_CODEC_ID_VP9, 0xFFFFFFFF }, | |
2009 | { AV_CODEC_ID_NONE, 0xFFFFFFFF } | |
2010 | }; | |
2011 | ||
2012 | #define OFFSET(x) offsetof(MatroskaMuxContext, x) | |
2013 | #define FLAGS AV_OPT_FLAG_ENCODING_PARAM | |
2014 | static const AVOption options[] = { | |
2015 | { "reserve_index_space", "Reserve a given amount of space (in bytes) at the beginning of the file for the index (cues).", OFFSET(reserve_cues_space), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, | |
2016 | { "cluster_size_limit", "Store at most the provided amount of bytes in a cluster. ", OFFSET(cluster_size_limit), AV_OPT_TYPE_INT , { .i64 = -1 }, -1, INT_MAX, FLAGS }, | |
2017 | { "cluster_time_limit", "Store at most the provided number of milliseconds in a cluster.", OFFSET(cluster_time_limit), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, FLAGS }, | |
2018 | { "dash", "Create a WebM file conforming to WebM DASH specification", OFFSET(is_dash), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS }, | |
2019 | { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS }, | |
2020 | { NULL }, | |
2021 | }; | |
2022 | ||
2023 | #if CONFIG_MATROSKA_MUXER | |
2024 | static const AVClass matroska_class = { | |
2025 | .class_name = "matroska muxer", | |
2026 | .item_name = av_default_item_name, | |
2027 | .option = options, | |
2028 | .version = LIBAVUTIL_VERSION_INT, | |
2029 | }; | |
2030 | ||
2031 | AVOutputFormat ff_matroska_muxer = { | |
2032 | .name = "matroska", | |
2033 | .long_name = NULL_IF_CONFIG_SMALL("Matroska"), | |
2034 | .mime_type = "video/x-matroska", | |
2035 | .extensions = "mkv", | |
2036 | .priv_data_size = sizeof(MatroskaMuxContext), | |
2037 | .audio_codec = CONFIG_LIBVORBIS_ENCODER ? | |
2038 | AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3, | |
2039 | .video_codec = CONFIG_LIBX264_ENCODER ? | |
2040 | AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4, | |
2041 | .write_header = mkv_write_header, | |
2042 | .write_packet = mkv_write_flush_packet, | |
2043 | .write_trailer = mkv_write_trailer, | |
2044 | .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | | |
2045 | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, | |
2046 | .codec_tag = (const AVCodecTag* const []){ | |
2047 | ff_codec_bmp_tags, ff_codec_wav_tags, | |
2048 | additional_audio_tags, additional_video_tags, 0 | |
2049 | }, | |
2050 | .subtitle_codec = AV_CODEC_ID_ASS, | |
2051 | .query_codec = mkv_query_codec, | |
2052 | .priv_class = &matroska_class, | |
2053 | }; | |
2054 | #endif | |
2055 | ||
2056 | #if CONFIG_WEBM_MUXER | |
2057 | static const AVClass webm_class = { | |
2058 | .class_name = "webm muxer", | |
2059 | .item_name = av_default_item_name, | |
2060 | .option = options, | |
2061 | .version = LIBAVUTIL_VERSION_INT, | |
2062 | }; | |
2063 | ||
2064 | AVOutputFormat ff_webm_muxer = { | |
2065 | .name = "webm", | |
2066 | .long_name = NULL_IF_CONFIG_SMALL("WebM"), | |
2067 | .mime_type = "video/webm", | |
2068 | .extensions = "webm", | |
2069 | .priv_data_size = sizeof(MatroskaMuxContext), | |
2070 | .audio_codec = AV_CODEC_ID_VORBIS, | |
2071 | .video_codec = AV_CODEC_ID_VP8, | |
2072 | .subtitle_codec = AV_CODEC_ID_WEBVTT, | |
2073 | .write_header = mkv_write_header, | |
2074 | .write_packet = mkv_write_flush_packet, | |
2075 | .write_trailer = mkv_write_trailer, | |
2076 | .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | | |
2077 | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, | |
2078 | .priv_class = &webm_class, | |
2079 | }; | |
2080 | #endif | |
2081 | ||
2082 | #if CONFIG_MATROSKA_AUDIO_MUXER | |
2083 | static const AVClass mka_class = { | |
2084 | .class_name = "matroska audio muxer", | |
2085 | .item_name = av_default_item_name, | |
2086 | .option = options, | |
2087 | .version = LIBAVUTIL_VERSION_INT, | |
2088 | }; | |
2089 | AVOutputFormat ff_matroska_audio_muxer = { | |
2090 | .name = "matroska", | |
2091 | .long_name = NULL_IF_CONFIG_SMALL("Matroska Audio"), | |
2092 | .mime_type = "audio/x-matroska", | |
2093 | .extensions = "mka", | |
2094 | .priv_data_size = sizeof(MatroskaMuxContext), | |
2095 | .audio_codec = CONFIG_LIBVORBIS_ENCODER ? | |
2096 | AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3, | |
2097 | .video_codec = AV_CODEC_ID_NONE, | |
2098 | .write_header = mkv_write_header, | |
2099 | .write_packet = mkv_write_flush_packet, | |
2100 | .write_trailer = mkv_write_trailer, | |
2101 | .flags = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT | | |
2102 | AVFMT_ALLOW_FLUSH, | |
2103 | .codec_tag = (const AVCodecTag* const []){ | |
2104 | ff_codec_wav_tags, additional_audio_tags, 0 | |
2105 | }, | |
2106 | .priv_class = &mka_class, | |
2107 | }; | |
2108 | #endif |