FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/mpegtsenc.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 661 1398 47.3%
Functions: 32 40 80.0%
Branches: 321 890 36.1%
Line Branch Exec Source
1 /*
2 * MPEG-2 transport stream (aka DVB) muxer
3 * Copyright (c) 2003 Fabrice Bellard
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 "libavutil/avassert.h"
23 #include "libavutil/bswap.h"
24 #include "libavutil/crc.h"
25 #include "libavutil/dict.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/mem.h"
29 #include "libavutil/opt.h"
30
31 #include "libavcodec/ac3_parser_internal.h"
32 #include "libavcodec/bytestream.h"
33 #include "libavcodec/defs.h"
34 #include "libavcodec/h264.h"
35 #include "libavcodec/hevc/hevc.h"
36 #include "libavcodec/vvc.h"
37 #include "libavcodec/startcode.h"
38
39 #include "avformat.h"
40 #include "avio_internal.h"
41 #include "internal.h"
42 #include "mpegts.h"
43 #include "mux.h"
44
45 #define PCR_TIME_BASE 27000000
46
47 /* write DVB SI sections */
48
49 #define DVB_PRIVATE_NETWORK_START 0xff01
50
51 /*********************************************/
52 /* mpegts section writer */
53
54 typedef struct MpegTSSection {
55 int pid;
56 int cc;
57 int discontinuity;
58 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
59 void *opaque;
60 } MpegTSSection;
61
62 typedef struct MpegTSService {
63 MpegTSSection pmt; /* MPEG-2 PMT table context */
64 int sid; /* service ID */
65 uint8_t name[256];
66 uint8_t provider_name[256];
67 int pcr_pid;
68 AVProgram *program;
69 } MpegTSService;
70
71 // service_type values as defined in ETSI 300 468
72 enum {
73 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
74 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
75 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
76 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
77 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
78 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
79 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19,
80 MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV = 0x1F,
81 };
82 typedef struct MpegTSWrite {
83 const AVClass *av_class;
84 MpegTSSection pat; /* MPEG-2 PAT table */
85 MpegTSSection sdt; /* MPEG-2 SDT table context */
86 MpegTSSection nit; /* MPEG-2 NIT table context */
87 MpegTSService **services;
88 AVPacket *pkt;
89 int64_t sdt_period; /* SDT period in PCR time base */
90 int64_t pat_period; /* PAT/PMT period in PCR time base */
91 int64_t nit_period; /* NIT period in PCR time base */
92 int nb_services;
93 int64_t first_pcr;
94 int first_dts_checked;
95 int64_t next_pcr;
96 int mux_rate; ///< set to 1 when VBR
97 int pes_payload_size;
98 int64_t total_size;
99
100 int transport_stream_id;
101 int original_network_id;
102 int service_id;
103 int service_type;
104
105 int pmt_start_pid;
106 int start_pid;
107 int m2ts_mode;
108 int m2ts_video_pid;
109 int m2ts_audio_pid;
110 int m2ts_pgssub_pid;
111 int m2ts_textsub_pid;
112
113 int pcr_period_ms;
114 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
115 #define MPEGTS_FLAG_AAC_LATM 0x02
116 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
117 #define MPEGTS_FLAG_SYSTEM_B 0x08
118 #define MPEGTS_FLAG_DISCONT 0x10
119 #define MPEGTS_FLAG_NIT 0x20
120 #define MPEGTS_FLAG_OMIT_RAI 0x40
121 int flags;
122 int copyts;
123 int tables_version;
124 int64_t pat_period_us;
125 int64_t sdt_period_us;
126 int64_t nit_period_us;
127 int64_t last_pat_ts;
128 int64_t last_sdt_ts;
129 int64_t last_nit_ts;
130
131 uint8_t provider_name[256];
132
133 int omit_video_pes_length;
134 } MpegTSWrite;
135
136 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
137 #define DEFAULT_PES_HEADER_FREQ 16
138 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
139
140 /* The section length is 12 bits. The first 2 are set to 0, the remaining
141 * 10 bits should not exceed 1021. */
142 #define SECTION_LENGTH 1020
143
144 /* NOTE: 4 bytes must be left at the end for the crc32 */
145 1205 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
146 {
147 unsigned int crc;
148 unsigned char packet[TS_PACKET_SIZE];
149 const unsigned char *buf_ptr;
150 unsigned char *q;
151 int first, b, len1, left;
152
153 2410 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
154 1205 -1, buf, len - 4));
155
156 1205 buf[len - 4] = (crc >> 24) & 0xff;
157 1205 buf[len - 3] = (crc >> 16) & 0xff;
158 1205 buf[len - 2] = (crc >> 8) & 0xff;
159 1205 buf[len - 1] = crc & 0xff;
160
161 /* send each packet */
162 1205 buf_ptr = buf;
163
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 2410 while (len > 0) {
164 1205 first = buf == buf_ptr;
165 1205 q = packet;
166 1205 *q++ = 0x47;
167 1205 b = s->pid >> 8;
168
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169 1205 b |= 0x40;
170 1205 *q++ = b;
171 1205 *q++ = s->pid;
172 1205 s->cc = s->cc + 1 & 0xf;
173 1205 *q++ = 0x10 | s->cc;
174
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 1205 if (s->discontinuity) {
175 ✗ q[-1] |= 0x20;
176 ✗ *q++ = 1;
177 ✗ *q++ = 0x80;
178 ✗ s->discontinuity = 0;
179 }
180
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181 1205 *q++ = 0; /* 0 offset */
182 1205 len1 = TS_PACKET_SIZE - (q - packet);
183
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 1205 if (len1 > len)
184 1205 len1 = len;
185 1205 memcpy(q, buf_ptr, len1);
186 1205 q += len1;
187 /* add known padding data */
188 1205 left = TS_PACKET_SIZE - (q - packet);
189
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190 1205 memset(q, 0xff, left);
191
192 1205 s->write_packet(s, packet);
193
194 1205 buf_ptr += len1;
195 1205 len -= len1;
196 }
197 1205 }
198
199 4829 static inline void put16(uint8_t **q_ptr, int val)
200 {
201 uint8_t *q;
202 4829 q = *q_ptr;
203 4829 *q++ = val >> 8;
204 4829 *q++ = val;
205 4829 *q_ptr = q;
206 4829 }
207
208 1205 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
209 int version, int sec_num, int last_sec_num,
210 uint8_t *buf, int len)
211 {
212 uint8_t section[1024], *q;
213 unsigned int tot_len;
214 /* reserved_future_use field must be set to 1 for SDT and NIT */
215
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 1205 unsigned int flags = (tid == SDT_TID || tid == NIT_TID) ? 0xf000 : 0xb000;
216
217 1205 tot_len = 3 + 5 + len + 4;
218 /* check if not too big */
219
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 1205 if (tot_len > 1024)
220 ✗ return AVERROR_INVALIDDATA;
221
222 1205 q = section;
223 1205 *q++ = tid;
224 1205 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
225 1205 put16(&q, id);
226 1205 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
227 1205 *q++ = sec_num;
228 1205 *q++ = last_sec_num;
229 1205 memcpy(q, buf, len);
230
231 1205 mpegts_write_section(s, section, tot_len);
232 1205 return 0;
233 }
234
235 /*********************************************/
236 /* mpegts writer */
237
238 #define DEFAULT_PROVIDER_NAME "FFmpeg"
239 #define DEFAULT_SERVICE_NAME "Service"
240
241 /* we retransmit the SI info at this rate */
242 #define SDT_RETRANS_TIME 500
243 #define PAT_RETRANS_TIME 100
244 #define PCR_RETRANS_TIME 20
245 #define NIT_RETRANS_TIME 500
246
247 typedef struct MpegTSWriteStream {
248 int pid; /* stream associated pid */
249 int cc;
250 int discontinuity;
251 int payload_size;
252 int first_timestamp_checked; ///< first pts/dts check needed
253 int prev_payload_key;
254 int64_t payload_pts;
255 int64_t payload_dts;
256 int payload_flags;
257 uint8_t *payload;
258 AVFormatContext *amux;
259 int data_st_warning;
260
261 int64_t pcr_period; /* PCR period in PCR time base */
262 int64_t last_pcr;
263
264 /* For Opus */
265 int opus_queued_samples;
266 int opus_pending_trim_start;
267
268 DVBAC3Descriptor *dvb_ac3_desc;
269 } MpegTSWriteStream;
270
271 523 static void mpegts_write_pat(AVFormatContext *s)
272 {
273 523 MpegTSWrite *ts = s->priv_data;
274 MpegTSService *service;
275 uint8_t data[SECTION_LENGTH], *q;
276 int i;
277
278 523 q = data;
279
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 523 if (ts->flags & MPEGTS_FLAG_NIT) {
280 ✗ put16(&q, 0x0000);
281 ✗ put16(&q, NIT_PID);
282 }
283
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 1046 for (i = 0; i < ts->nb_services; i++) {
284 523 service = ts->services[i];
285 523 put16(&q, service->sid);
286 523 put16(&q, 0xe000 | service->pmt.pid);
287 }
288 523 mpegts_write_section1(&ts->pat, PAT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
289 523 data, q - data);
290 523 }
291
292 318 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
293 {
294 318 memcpy(*q_ptr, buf, len);
295 318 *q_ptr += len;
296 318 }
297
298 ✗ static int put_arib_caption_descriptor(AVFormatContext *s, uint8_t **q_ptr,
299 AVCodecParameters *codecpar)
300 {
301 uint8_t stream_identifier;
302 uint16_t data_component_id;
303 ✗ uint8_t *q = *q_ptr;
304
305 ✗ switch (codecpar->profile) {
306 ✗ case AV_PROFILE_ARIB_PROFILE_A:
307 ✗ stream_identifier = 0x30;
308 ✗ data_component_id = 0x0008;
309 ✗ break;
310 ✗ case AV_PROFILE_ARIB_PROFILE_C:
311 ✗ stream_identifier = 0x87;
312 ✗ data_component_id = 0x0012;
313 ✗ break;
314 ✗ default:
315 ✗ av_log(s, AV_LOG_ERROR,
316 "Unset/unknown ARIB caption profile %d utilized!\n",
317 codecpar->profile);
318 ✗ return AVERROR_INVALIDDATA;
319 }
320
321 // stream_identifier_descriptor
322 ✗ *q++ = 0x52; // descriptor_tag
323 ✗ *q++ = 1; // descriptor_length
324 ✗ *q++ = stream_identifier; // component_tag: stream_identifier
325
326 // data_component_descriptor, defined in ARIB STD-B10, part 2, 6.2.20
327 ✗ *q++ = 0xFD; // descriptor_tag: ARIB data coding type descriptor
328 ✗ *q++ = 3; // descriptor_length
329 ✗ put16(&q, data_component_id); // data_component_id
330 // additional_arib_caption_info: defined in ARIB STD-B24, fascicle 1, Part 3, 9.6.1
331 // Here we utilize a pre-defined set of values defined in ARIB TR-B14,
332 // Fascicle 2, 4.2.8.5 for PMT usage, with the reserved bits in the middle
333 // set to 1 (as that is what every broadcaster seems to be doing in
334 // production).
335 ✗ *q++ = 0x3D; // DMF('0011'), Reserved('11'), Timing('01')
336
337 ✗ *q_ptr = q;
338
339 ✗ return 0;
340 }
341
342 33 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
343 {
344 33 uint8_t *q = *q_ptr;
345 33 *q++ = REGISTRATION_DESCRIPTOR;
346 33 *q++ = 4;
347 33 *q++ = tag;
348 33 *q++ = tag >> 8;
349 33 *q++ = tag >> 16;
350 33 *q++ = tag >> 24;
351 33 *q_ptr = q;
352 33 }
353
354 532 static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
355 {
356 532 MpegTSWrite *ts = s->priv_data;
357 532 MpegTSWriteStream *ts_st = st->priv_data;
358 int stream_type;
359
360
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 532 switch (st->codecpar->codec_id) {
361 9 case AV_CODEC_ID_MPEG1VIDEO:
362 case AV_CODEC_ID_MPEG2VIDEO:
363 9 stream_type = STREAM_TYPE_VIDEO_MPEG2;
364 9 break;
365 ✗ case AV_CODEC_ID_MPEG4:
366 ✗ stream_type = STREAM_TYPE_VIDEO_MPEG4;
367 ✗ break;
368 42 case AV_CODEC_ID_H264:
369 42 stream_type = STREAM_TYPE_VIDEO_H264;
370 42 break;
371 ✗ case AV_CODEC_ID_HEVC:
372 ✗ stream_type = STREAM_TYPE_VIDEO_HEVC;
373 ✗ break;
374 ✗ case AV_CODEC_ID_VVC:
375 ✗ stream_type = STREAM_TYPE_VIDEO_VVC;
376 ✗ break;
377 ✗ case AV_CODEC_ID_CAVS:
378 ✗ stream_type = STREAM_TYPE_VIDEO_CAVS;
379 ✗ break;
380 ✗ case AV_CODEC_ID_AVS2:
381 ✗ stream_type = STREAM_TYPE_VIDEO_AVS2;
382 ✗ break;
383 ✗ case AV_CODEC_ID_AVS3:
384 ✗ stream_type = STREAM_TYPE_VIDEO_AVS3;
385 ✗ break;
386 ✗ case AV_CODEC_ID_DIRAC:
387 ✗ stream_type = STREAM_TYPE_VIDEO_DIRAC;
388 ✗ break;
389 ✗ case AV_CODEC_ID_VC1:
390 ✗ stream_type = STREAM_TYPE_VIDEO_VC1;
391 ✗ break;
392 448 case AV_CODEC_ID_MP2:
393 case AV_CODEC_ID_MP3:
394
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 448 if ( st->codecpar->sample_rate > 0
395
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 448 && st->codecpar->sample_rate < 32000) {
396 ✗ stream_type = STREAM_TYPE_AUDIO_MPEG2;
397 } else {
398 448 stream_type = STREAM_TYPE_AUDIO_MPEG1;
399 }
400 448 break;
401 ✗ case AV_CODEC_ID_AAC:
402 ✗ stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
403 ? STREAM_TYPE_AUDIO_AAC_LATM
404 ✗ : STREAM_TYPE_AUDIO_AAC;
405 ✗ break;
406 ✗ case AV_CODEC_ID_AAC_LATM:
407 ✗ stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
408 ✗ break;
409 ✗ case AV_CODEC_ID_AC3:
410 ✗ stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
411 ? STREAM_TYPE_PRIVATE_DATA
412 ✗ : STREAM_TYPE_AUDIO_AC3;
413 ✗ break;
414 ✗ case AV_CODEC_ID_EAC3:
415 ✗ stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
416 ? STREAM_TYPE_PRIVATE_DATA
417 ✗ : STREAM_TYPE_AUDIO_EAC3;
418 ✗ break;
419 ✗ case AV_CODEC_ID_DTS:
420 ✗ stream_type = STREAM_TYPE_AUDIO_DTS;
421 ✗ break;
422 ✗ case AV_CODEC_ID_TRUEHD:
423 ✗ stream_type = STREAM_TYPE_AUDIO_TRUEHD;
424 ✗ break;
425 ✗ case AV_CODEC_ID_OPUS:
426 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
427 ✗ break;
428 ✗ case AV_CODEC_ID_TIMED_ID3:
429 ✗ stream_type = STREAM_TYPE_METADATA;
430 ✗ break;
431 ✗ case AV_CODEC_ID_SMPTE_2038:
432 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
433 ✗ break;
434 ✗ case AV_CODEC_ID_DVB_SUBTITLE:
435 case AV_CODEC_ID_DVB_TELETEXT:
436 case AV_CODEC_ID_ARIB_CAPTION:
437 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
438 ✗ break;
439 ✗ case AV_CODEC_ID_SMPTE_KLV:
440 ✗ if (st->codecpar->profile == AV_PROFILE_KLVA_SYNC) {
441 ✗ stream_type = STREAM_TYPE_METADATA;
442 } else {
443 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
444 }
445 ✗ break;
446 33 default:
447 33 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
448 "Stream %d, codec %s, is muxed as a private data stream "
449 "and may not be recognized upon reading.\n", st->index,
450 33 avcodec_get_name(st->codecpar->codec_id));
451 33 stream_type = STREAM_TYPE_PRIVATE_DATA;
452 33 break;
453 }
454
455 532 return stream_type;
456 }
457
458 ✗ static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
459 {
460 int stream_type;
461 ✗ MpegTSWriteStream *ts_st = st->priv_data;
462
463 ✗ switch (st->codecpar->codec_id) {
464 ✗ case AV_CODEC_ID_MPEG2VIDEO:
465 ✗ stream_type = STREAM_TYPE_VIDEO_MPEG2;
466 ✗ break;
467 ✗ case AV_CODEC_ID_H264:
468 ✗ stream_type = STREAM_TYPE_VIDEO_H264;
469 ✗ break;
470 ✗ case AV_CODEC_ID_VC1:
471 ✗ stream_type = STREAM_TYPE_VIDEO_VC1;
472 ✗ break;
473 ✗ case AV_CODEC_ID_HEVC:
474 ✗ stream_type = STREAM_TYPE_VIDEO_HEVC;
475 ✗ break;
476 ✗ case AV_CODEC_ID_PCM_BLURAY:
477 ✗ stream_type = 0x80;
478 ✗ break;
479 ✗ case AV_CODEC_ID_AC3:
480 ✗ stream_type = 0x81;
481 ✗ break;
482 ✗ case AV_CODEC_ID_DTS:
483 ✗ stream_type = (st->codecpar->ch_layout.nb_channels > 6) ? 0x85 : 0x82;
484 ✗ break;
485 ✗ case AV_CODEC_ID_TRUEHD:
486 ✗ stream_type = 0x83;
487 ✗ break;
488 ✗ case AV_CODEC_ID_EAC3:
489 ✗ stream_type = 0x84;
490 ✗ break;
491 ✗ case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
492 ✗ stream_type = 0x90;
493 ✗ break;
494 ✗ case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
495 ✗ stream_type = 0x92;
496 ✗ break;
497 ✗ default:
498 ✗ av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
499 "Stream %d, codec %s, is muxed as a private data stream "
500 "and may not be recognized upon reading.\n", st->index,
501 ✗ avcodec_get_name(st->codecpar->codec_id));
502 ✗ stream_type = STREAM_TYPE_PRIVATE_DATA;
503 ✗ break;
504 }
505
506 ✗ return stream_type;
507 }
508
509 523 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
510 {
511 523 MpegTSWrite *ts = s->priv_data;
512 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
513 523 int val, stream_type, i, err = 0;
514
515 523 q = data;
516 523 put16(&q, 0xe000 | service->pcr_pid);
517
518 523 program_info_length_ptr = q;
519 523 q += 2; /* patched after */
520
521 /* put program info here */
522
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 523 if (ts->m2ts_mode) {
523 ✗ put_registration_descriptor(&q, MKTAG('H', 'D', 'M', 'V'));
524 ✗ *q++ = 0x88; // descriptor_tag - hdmv_copy_control_descriptor
525 ✗ *q++ = 0x04; // descriptor_length
526 ✗ put16(&q, 0x0fff); // CA_System_ID
527 ✗ *q++ = 0xfc; // private_data_byte
528 ✗ *q++ = 0xfc; // private_data_byte
529 }
530
531 523 val = 0xf000 | (q - program_info_length_ptr - 2);
532 523 program_info_length_ptr[0] = val >> 8;
533 523 program_info_length_ptr[1] = val;
534
535
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 1055 for (i = 0; i < s->nb_streams; i++) {
536 532 AVStream *st = s->streams[i];
537 532 MpegTSWriteStream *ts_st = st->priv_data;
538 532 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
539 532 const char default_language[] = "und";
540
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 532 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
541 532 enum AVCodecID codec_id = st->codecpar->codec_id;
542
543
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 532 if (s->nb_programs) {
544 ✗ int k, found = 0;
545 ✗ AVProgram *program = service->program;
546
547 ✗ for (k = 0; k < program->nb_stream_indexes; k++)
548 ✗ if (program->stream_index[k] == i) {
549 ✗ found = 1;
550 ✗ break;
551 }
552
553 ✗ if (!found)
554 ✗ continue;
555 }
556
557
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 532 if (q - data > SECTION_LENGTH - 32) {
558 ✗ err = 1;
559 ✗ break;
560 }
561
562
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 532 stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
563
564 532 *q++ = stream_type;
565 532 put16(&q, 0xe000 | ts_st->pid);
566 532 desc_length_ptr = q;
567 532 q += 2; /* patched after */
568
569 /* write optional descriptors here */
570
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 532 switch (st->codecpar->codec_type) {
571 481 case AVMEDIA_TYPE_AUDIO:
572
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 481 if (codec_id == AV_CODEC_ID_AC3)
573 ✗ put_registration_descriptor(&q, MKTAG('A', 'C', '-', '3'));
574
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 481 if (codec_id == AV_CODEC_ID_EAC3)
575 ✗ put_registration_descriptor(&q, MKTAG('E', 'A', 'C', '3'));
576
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 481 if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
577 ✗ if (codec_id == AV_CODEC_ID_AC3) {
578 ✗ DVBAC3Descriptor *dvb_ac3_desc = ts_st->dvb_ac3_desc;
579
580 ✗ *q++=0x6a; // AC3 descriptor see A038 DVB SI
581 ✗ if (dvb_ac3_desc) {
582 ✗ int len = 1 +
583 ✗ !!(dvb_ac3_desc->component_type_flag) +
584 ✗ !!(dvb_ac3_desc->bsid_flag) +
585 ✗ !!(dvb_ac3_desc->mainid_flag) +
586 ✗ !!(dvb_ac3_desc->asvc_flag);
587
588 ✗ *q++ = len;
589 ✗ *q++ = dvb_ac3_desc->component_type_flag << 7 | dvb_ac3_desc->bsid_flag << 6 |
590 ✗ dvb_ac3_desc->mainid_flag << 5 | dvb_ac3_desc->asvc_flag << 4;
591
592 ✗ if (dvb_ac3_desc->component_type_flag) *q++ = dvb_ac3_desc->component_type;
593 ✗ if (dvb_ac3_desc->bsid_flag) *q++ = dvb_ac3_desc->bsid;
594 ✗ if (dvb_ac3_desc->mainid_flag) *q++ = dvb_ac3_desc->mainid;
595 ✗ if (dvb_ac3_desc->asvc_flag) *q++ = dvb_ac3_desc->asvc;
596 } else {
597 ✗ *q++=1; // 1 byte, all flags sets to 0
598 ✗ *q++=0; // omit all fields...
599 }
600 ✗ } else if (codec_id == AV_CODEC_ID_EAC3) {
601 ✗ *q++=0x7a; // EAC3 descriptor see A038 DVB SI
602 ✗ *q++=1; // 1 byte, all flags sets to 0
603 ✗ *q++=0; // omit all fields...
604 }
605 }
606
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 481 if (codec_id == AV_CODEC_ID_S302M)
607 33 put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
608
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 481 if (codec_id == AV_CODEC_ID_OPUS) {
609 ✗ int ch = st->codecpar->ch_layout.nb_channels;
610
611 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
612 ✗ if (q - data > SECTION_LENGTH - 6 - 4) {
613 ✗ err = 1;
614 ✗ break;
615 }
616
617 ✗ put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
618
619 ✗ *q++ = 0x7f; /* DVB extension descriptor */
620 ✗ *q++ = 2;
621 ✗ *q++ = 0x80;
622
623 ✗ if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
624 ✗ if (st->codecpar->extradata[18] == 0 && ch <= 2) {
625 /* RTP mapping family */
626 ✗ *q++ = ch;
627 ✗ } else if (st->codecpar->extradata[18] == 1 && ch <= 8 &&
628 ✗ st->codecpar->extradata_size >= 21 + ch) {
629 static const uint8_t coupled_stream_counts[9] = {
630 1, 0, 1, 1, 2, 2, 2, 3, 3
631 };
632 static const uint8_t channel_map_a[8][8] = {
633 {0},
634 {0, 1},
635 {0, 2, 1},
636 {0, 1, 2, 3},
637 {0, 4, 1, 2, 3},
638 {0, 4, 1, 2, 3, 5},
639 {0, 4, 1, 2, 3, 5, 6},
640 {0, 6, 1, 2, 3, 4, 5, 7},
641 };
642 static const uint8_t channel_map_b[8][8] = {
643 {0},
644 {0, 1},
645 {0, 1, 2},
646 {0, 1, 2, 3},
647 {0, 1, 2, 3, 4},
648 {0, 1, 2, 3, 4, 5},
649 {0, 1, 2, 3, 4, 5, 6},
650 {0, 1, 2, 3, 4, 5, 6, 7},
651 };
652 /* Vorbis mapping family */
653
654 ✗ if (st->codecpar->extradata[19] == ch - coupled_stream_counts[ch] &&
655 ✗ st->codecpar->extradata[20] == coupled_stream_counts[ch] &&
656 ✗ memcmp(&st->codecpar->extradata[21], channel_map_a[ch - 1], ch) == 0) {
657 ✗ *q++ = ch;
658 ✗ } else if (ch >= 2 && st->codecpar->extradata[19] == ch &&
659 ✗ st->codecpar->extradata[20] == 0 &&
660 ✗ memcmp(&st->codecpar->extradata[21], channel_map_b[ch - 1], ch) == 0) {
661 ✗ *q++ = ch | 0x80;
662 } else {
663 /* Unsupported, could write an extended descriptor here */
664 ✗ av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
665 ✗ *q++ = 0xff;
666 }
667 } else {
668 /* Unsupported */
669 ✗ av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
670 ✗ *q++ = 0xff;
671 }
672 ✗ } else if (ch <= 2) {
673 /* Assume RTP mapping family */
674 ✗ *q++ = ch;
675 } else {
676 /* Unsupported */
677 ✗ av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
678 ✗ *q++ = 0xff;
679 }
680 }
681
682
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 481 if (language != default_language ||
683
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 481 st->disposition & (AV_DISPOSITION_CLEAN_EFFECTS |
684 AV_DISPOSITION_HEARING_IMPAIRED |
685 AV_DISPOSITION_VISUAL_IMPAIRED)) {
686 const char *p, *next;
687 uint8_t *len_ptr;
688
689 ✗ *q++ = ISO_639_LANGUAGE_DESCRIPTOR;
690 ✗ len_ptr = q++;
691 ✗ *len_ptr = 0;
692
693 ✗ for (p = next = language; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
694 ✗ if (q - data > SECTION_LENGTH - 4) {
695 ✗ err = 1;
696 ✗ break;
697 }
698 ✗ next = strchr(p, ',');
699 ✗ if (strlen(p) != 3 && (!next || next != p + 3))
700 ✗ continue; /* not a 3-letter code */
701
702 ✗ *q++ = *p++;
703 ✗ *q++ = *p++;
704 ✗ *q++ = *p++;
705
706 ✗ if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
707 ✗ *q++ = 0x01;
708 ✗ else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
709 ✗ *q++ = 0x02;
710 ✗ else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
711 ✗ *q++ = 0x03;
712 else
713 ✗ *q++ = 0; /* undefined type */
714
715 ✗ *len_ptr += 4;
716 }
717
718 ✗ if (*len_ptr == 0)
719 ✗ q -= 2; /* no language codes were written */
720 }
721 481 break;
722 ✗ case AVMEDIA_TYPE_SUBTITLE:
723 ✗ if (codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
724 uint8_t *len_ptr;
725 ✗ int extradata_copied = 0;
726
727 ✗ *q++ = 0x59; /* subtitling_descriptor */
728 ✗ len_ptr = q++;
729
730 ✗ while (strlen(language) >= 3) {
731 ✗ if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
732 ✗ err = 1;
733 ✗ break;
734 }
735 ✗ *q++ = *language++;
736 ✗ *q++ = *language++;
737 ✗ *q++ = *language++;
738 /* Skip comma */
739 ✗ if (*language != '\0')
740 ✗ language++;
741
742 ✗ if (st->codecpar->extradata_size - extradata_copied >= 5) {
743 ✗ *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
744 ✗ memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
745 ✗ extradata_copied += 5;
746 ✗ q += 4;
747 } else {
748 /* subtitling_type:
749 * 0x10 - normal with no monitor aspect ratio criticality
750 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
751 ✗ *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
752 ✗ if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
753 /* support of old 4-byte extradata format */
754 ✗ memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
755 ✗ extradata_copied += 4;
756 ✗ q += 4;
757 } else {
758 ✗ put16(&q, 1); /* composition_page_id */
759 ✗ put16(&q, 1); /* ancillary_page_id */
760 }
761 }
762 }
763
764 ✗ *len_ptr = q - len_ptr - 1;
765 ✗ } else if (codec_id == AV_CODEC_ID_DVB_TELETEXT) {
766 ✗ uint8_t *len_ptr = NULL;
767 ✗ int extradata_copied = 0;
768
769 /* The descriptor tag. teletext_descriptor */
770 ✗ *q++ = 0x56;
771 ✗ len_ptr = q++;
772
773 ✗ while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
774 ✗ *q++ = *language++;
775 ✗ *q++ = *language++;
776 ✗ *q++ = *language++;
777 /* Skip comma */
778 ✗ if (*language != '\0')
779 ✗ language++;
780
781 ✗ if (st->codecpar->extradata_size - 1 > extradata_copied) {
782 ✗ memcpy(q, st->codecpar->extradata + extradata_copied, 2);
783 ✗ extradata_copied += 2;
784 ✗ q += 2;
785 } else {
786 /* The Teletext descriptor:
787 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
788 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
789 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
790 ✗ *q++ = 0x08;
791 ✗ *q++ = 0x00;
792 }
793 }
794
795 ✗ *len_ptr = q - len_ptr - 1;
796 ✗ } else if (codec_id == AV_CODEC_ID_ARIB_CAPTION) {
797 ✗ if (put_arib_caption_descriptor(s, &q, st->codecpar) < 0)
798 ✗ break;
799 }
800 ✗ break;
801 51 case AVMEDIA_TYPE_VIDEO:
802
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 51 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
803 ✗ put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
804
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 51 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
805 ✗ put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
806
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 51 } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
807 ✗ put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
808
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 51 } else if (stream_type == STREAM_TYPE_VIDEO_CAVS || stream_type == STREAM_TYPE_VIDEO_AVS2 ||
809 stream_type == STREAM_TYPE_VIDEO_AVS3) {
810 ✗ put_registration_descriptor(&q, MKTAG('A', 'V', 'S', 'V'));
811 }
812 51 break;
813 ✗ case AVMEDIA_TYPE_DATA:
814 ✗ if (codec_id == AV_CODEC_ID_SMPTE_KLV) {
815 ✗ put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
816 ✗ } else if (codec_id == AV_CODEC_ID_SMPTE_2038) {
817 ✗ put_registration_descriptor(&q, MKTAG('V', 'A', 'N', 'C'));
818 ✗ } else if (codec_id == AV_CODEC_ID_TIMED_ID3) {
819 ✗ const char *tag = "ID3 ";
820 ✗ *q++ = METADATA_DESCRIPTOR;
821 ✗ *q++ = 13;
822 ✗ put16(&q, 0xffff); /* metadata application format */
823 ✗ putbuf(&q, tag, strlen(tag));
824 ✗ *q++ = 0xff; /* metadata format */
825 ✗ putbuf(&q, tag, strlen(tag));
826 ✗ *q++ = 0; /* metadata service ID */
827 ✗ *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
828 }
829 ✗ break;
830 }
831
832 532 val = 0xf000 | (q - desc_length_ptr - 2);
833 532 desc_length_ptr[0] = val >> 8;
834 532 desc_length_ptr[1] = val;
835 }
836
837
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 523 if (err)
838 ✗ av_log(s, AV_LOG_ERROR,
839 "The PMT section cannot fit stream %d and all following streams.\n"
840 "Try reducing the number of languages in the audio streams "
841 "or the total number of streams.\n", i);
842
843 523 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
844 523 data, q - data);
845 523 return 0;
846 }
847
848 159 static void mpegts_write_sdt(AVFormatContext *s)
849 {
850 159 MpegTSWrite *ts = s->priv_data;
851 MpegTSService *service;
852 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
853 int i, running_status, free_ca_mode, val;
854
855 159 q = data;
856 159 put16(&q, ts->original_network_id);
857 159 *q++ = 0xff;
858
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 318 for (i = 0; i < ts->nb_services; i++) {
859 159 service = ts->services[i];
860 159 put16(&q, service->sid);
861 159 *q++ = 0xfc | 0x00; /* currently no EIT info */
862 159 desc_list_len_ptr = q;
863 159 q += 2;
864 159 running_status = 4; /* running */
865 159 free_ca_mode = 0;
866
867 /* write only one descriptor for the service name and provider */
868 159 *q++ = 0x48;
869 159 desc_len_ptr = q;
870 159 q++;
871 159 *q++ = ts->service_type;
872 159 putbuf(&q, service->provider_name, service->provider_name[0] + 1);
873 159 putbuf(&q, service->name, service->name[0] + 1);
874 159 desc_len_ptr[0] = q - desc_len_ptr - 1;
875
876 /* fill descriptor length */
877 159 val = (running_status << 13) | (free_ca_mode << 12) |
878 159 (q - desc_list_len_ptr - 2);
879 159 desc_list_len_ptr[0] = val >> 8;
880 159 desc_list_len_ptr[1] = val;
881 }
882 159 mpegts_write_section1(&ts->sdt, SDT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
883 159 data, q - data);
884 159 }
885
886 ✗ static void mpegts_write_nit(AVFormatContext *s)
887 {
888 ✗ MpegTSWrite *ts = s->priv_data;
889 uint8_t data[SECTION_LENGTH], *q, *desc_len_ptr, *loop_len_ptr;
890
891 ✗ q = data;
892
893 //network_descriptors_length
894 ✗ put16(&q, 0xf000 | (ts->provider_name[0] + 2));
895
896 //network_name_descriptor
897 ✗ *q++ = 0x40;
898 ✗ putbuf(&q, ts->provider_name, ts->provider_name[0] + 1);
899
900 //transport_stream_loop_length
901 ✗ loop_len_ptr = q;
902 ✗ q += 2;
903
904 ✗ put16(&q, ts->transport_stream_id);
905 ✗ put16(&q, ts->original_network_id);
906
907 //transport_descriptors_length
908 ✗ desc_len_ptr = q;
909 ✗ q += 2;
910
911 //service_list_descriptor
912 ✗ *q++ = 0x41;
913 ✗ *q++ = 3 * ts->nb_services;
914 ✗ for (int i = 0; i < ts->nb_services; i++) {
915 ✗ put16(&q, ts->services[i]->sid);
916 ✗ *q++ = ts->service_type;
917 }
918
919 //calculate lengths
920 ✗ put16(&desc_len_ptr, 0xf000 | q - (desc_len_ptr + 2));
921 ✗ put16(&loop_len_ptr, 0xf000 | q - (loop_len_ptr + 2));
922
923 ✗ mpegts_write_section1(&ts->nit, NIT_TID, ts->original_network_id, ts->tables_version, 0, 0,
924 ✗ data, q - data);
925 ✗ }
926
927 /* This stores a string in buf with the correct encoding and also sets the
928 * first byte as the length. !str is accepted for an empty string.
929 * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
930 * then we keep it as is, otherwise we signal UTF-8 encoding. */
931 60 static int encode_str8(uint8_t *buf, const char *str)
932 {
933 size_t str_len;
934
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 60 if (!str)
935 ✗ str = "";
936 60 str_len = strlen(str);
937
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 60 if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
938 60 const uint8_t *q = str;
939 60 int has_multibyte = 0;
940
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 479 while (*q) {
941 uint32_t code;
942
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 419 GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
943 419 has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
944 }
945
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 60 if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
946 ✗ if (str_len > 254)
947 ✗ return AVERROR(EINVAL);
948 ✗ buf[0] = str_len + 1;
949 ✗ buf[1] = 0x15;
950 ✗ memcpy(&buf[2], str, str_len);
951 ✗ return 0;
952 }
953 }
954 60 invalid:
955 /* Otherwise let's just encode the string as is! */
956
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 60 if (str_len > 255)
957 ✗ return AVERROR(EINVAL);
958 60 buf[0] = str_len;
959 60 memcpy(&buf[1], str, str_len);
960 60 return 0;
961 }
962
963 ✗ static int64_t get_pcr(const MpegTSWrite *ts)
964 {
965 ✗ return av_rescale(ts->total_size + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
966 ✗ ts->first_pcr;
967 }
968
969 65648 static void write_packet(AVFormatContext *s, const uint8_t *packet)
970 {
971 65648 MpegTSWrite *ts = s->priv_data;
972
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 65648 if (ts->m2ts_mode) {
973 ✗ int64_t pcr = get_pcr(s->priv_data);
974 ✗ uint32_t tp_extra_header = pcr % 0x3fffffff;
975 ✗ tp_extra_header = AV_RB32(&tp_extra_header);
976 ✗ avio_write(s->pb, (unsigned char *) &tp_extra_header,
977 sizeof(tp_extra_header));
978 }
979 65648 avio_write(s->pb, packet, TS_PACKET_SIZE);
980 65648 ts->total_size += TS_PACKET_SIZE;
981 65648 }
982
983 1205 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
984 {
985 1205 AVFormatContext *ctx = s->opaque;
986 1205 write_packet(ctx, packet);
987 1205 }
988
989 20 static MpegTSService *mpegts_add_service(AVFormatContext *s, int sid,
990 const AVDictionary *metadata,
991 AVProgram *program)
992 {
993 20 MpegTSWrite *ts = s->priv_data;
994 MpegTSService *service;
995 AVDictionaryEntry *title, *provider;
996 char default_service_name[32];
997 const char *service_name;
998 const char *provider_name;
999
1000 20 title = av_dict_get(metadata, "service_name", NULL, 0);
1001
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 20 if (!title)
1002 20 title = av_dict_get(metadata, "title", NULL, 0);
1003 20 snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
1004
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 20 service_name = title ? title->value : default_service_name;
1005 20 provider = av_dict_get(metadata, "service_provider", NULL, 0);
1006
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 20 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
1007
1008 20 service = av_mallocz(sizeof(MpegTSService));
1009
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 20 if (!service)
1010 ✗ return NULL;
1011 20 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
1012 20 service->sid = sid;
1013 20 service->pcr_pid = 0x1fff;
1014
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 40 if (encode_str8(service->provider_name, provider_name) < 0 ||
1015 20 encode_str8(service->name, service_name) < 0) {
1016 ✗ av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
1017 ✗ goto fail;
1018 }
1019
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 20 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
1020 ✗ goto fail;
1021
1022 20 service->pmt.write_packet = section_write_packet;
1023 20 service->pmt.opaque = s;
1024 20 service->pmt.cc = 15;
1025 20 service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1026 20 service->program = program;
1027
1028 20 return service;
1029 ✗ fail:
1030 ✗ av_free(service);
1031 ✗ return NULL;
1032 }
1033
1034 20 static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
1035 {
1036 20 MpegTSWrite *ts = s->priv_data;
1037 20 MpegTSWriteStream *ts_st = pcr_st->priv_data;
1038
1039
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 20 if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
1040 ✗ int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
1041 ✗ ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
1042 } else {
1043 /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
1044 20 int64_t frame_period = 0;
1045
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 20 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1046 14 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
1047
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 14 if (!frame_size) {
1048 1 av_log(s, AV_LOG_WARNING, "frame size not set\n");
1049 1 frame_size = 512;
1050 }
1051 14 frame_period = av_rescale_rnd(frame_size, PCR_TIME_BASE, pcr_st->codecpar->sample_rate, AV_ROUND_UP);
1052
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 6 } else if (pcr_st->avg_frame_rate.num) {
1053 6 frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
1054 }
1055
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 20 if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
1056 20 ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
1057 else
1058 ✗ ts_st->pcr_period = 1;
1059 }
1060
1061 // output a PCR as soon as possible
1062 20 ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
1063 20 }
1064
1065 20 static void select_pcr_streams(AVFormatContext *s)
1066 {
1067 20 MpegTSWrite *ts = s->priv_data;
1068
1069
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 40 for (int i = 0; i < ts->nb_services; i++) {
1070 20 MpegTSService *service = ts->services[i];
1071 20 AVStream *pcr_st = NULL;
1072 20 AVProgram *program = service->program;
1073
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 20 int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
1074
1075
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 41 for (int j = 0; j < nb_streams; j++) {
1076
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 21 AVStream *st = s->streams[program ? program->stream_index[j] : j];
1077
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 21 if (!pcr_st ||
1078
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 1 pcr_st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1079 {
1080 20 pcr_st = st;
1081 }
1082 }
1083
1084
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 20 if (pcr_st) {
1085 20 MpegTSWriteStream *ts_st = pcr_st->priv_data;
1086 20 service->pcr_pid = ts_st->pid;
1087 20 enable_pcr_generation_for_stream(s, pcr_st);
1088 20 av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
1089 service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
1090 }
1091 }
1092 20 }
1093
1094 20 static int mpegts_init(AVFormatContext *s)
1095 {
1096 20 MpegTSWrite *ts = s->priv_data;
1097 AVDictionaryEntry *provider;
1098 const char *provider_name;
1099 int i, j;
1100 int ret;
1101
1102
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 20 if (ts->m2ts_mode == -1) {
1103
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 20 if (av_match_ext(s->url, "m2ts")) {
1104 ✗ ts->m2ts_mode = 1;
1105 } else {
1106 20 ts->m2ts_mode = 0;
1107 }
1108 }
1109
1110 20 ts->m2ts_video_pid = M2TS_VIDEO_PID;
1111 20 ts->m2ts_audio_pid = M2TS_AUDIO_START_PID;
1112 20 ts->m2ts_pgssub_pid = M2TS_PGSSUB_START_PID;
1113 20 ts->m2ts_textsub_pid = M2TS_TEXTSUB_PID;
1114
1115
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 20 if (ts->m2ts_mode) {
1116 ✗ ts->pmt_start_pid = M2TS_PMT_PID;
1117 ✗ if (s->nb_programs > 1) {
1118 ✗ av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
1119 ✗ return AVERROR(EINVAL);
1120 }
1121 }
1122
1123
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 20 if (s->max_delay < 0) /* Not set by the caller */
1124 ✗ s->max_delay = 0;
1125
1126 // round up to a whole number of TS packets
1127 20 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
1128
1129
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 20 if (!s->nb_programs) {
1130 /* allocate a single DVB service */
1131
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 20 if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
1132 ✗ return AVERROR(ENOMEM);
1133 } else {
1134 ✗ for (i = 0; i < s->nb_programs; i++) {
1135 ✗ AVProgram *program = s->programs[i];
1136 ✗ if (!mpegts_add_service(s, program->id, program->metadata, program))
1137 ✗ return AVERROR(ENOMEM);
1138 }
1139 }
1140
1141 20 ts->pat.pid = PAT_PID;
1142 /* Initialize at 15 so that it wraps and is equal to 0 for the
1143 * first packet we write. */
1144 20 ts->pat.cc = 15;
1145 20 ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1146 20 ts->pat.write_packet = section_write_packet;
1147 20 ts->pat.opaque = s;
1148
1149 20 ts->sdt.pid = SDT_PID;
1150 20 ts->sdt.cc = 15;
1151 20 ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1152 20 ts->sdt.write_packet = section_write_packet;
1153 20 ts->sdt.opaque = s;
1154
1155 20 ts->nit.pid = NIT_PID;
1156 20 ts->nit.cc = 15;
1157 20 ts->nit.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1158 20 ts->nit.write_packet = section_write_packet;
1159 20 ts->nit.opaque = s;
1160
1161 20 ts->pkt = ffformatcontext(s)->pkt;
1162
1163 /* assign pids to each stream */
1164
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 41 for (i = 0; i < s->nb_streams; i++) {
1165 21 AVStream *st = s->streams[i];
1166 MpegTSWriteStream *ts_st;
1167
1168 21 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
1169
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 21 if (!ts_st) {
1170 ✗ return AVERROR(ENOMEM);
1171 }
1172 21 st->priv_data = ts_st;
1173
1174 21 avpriv_set_pts_info(st, 33, 1, 90000);
1175
1176 21 ts_st->payload = av_mallocz(ts->pes_payload_size);
1177
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 21 if (!ts_st->payload) {
1178 ✗ return AVERROR(ENOMEM);
1179 }
1180
1181 /* MPEG pid values < 16 are reserved. Applications which set st->id in
1182 * this range are assigned a calculated pid. */
1183
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 21 if (st->id < 16) {
1184
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 21 if (ts->m2ts_mode) {
1185 ✗ switch (st->codecpar->codec_type) {
1186 ✗ case AVMEDIA_TYPE_VIDEO:
1187 ✗ ts_st->pid = ts->m2ts_video_pid++;
1188 ✗ break;
1189 ✗ case AVMEDIA_TYPE_AUDIO:
1190 ✗ ts_st->pid = ts->m2ts_audio_pid++;
1191 ✗ break;
1192 ✗ case AVMEDIA_TYPE_SUBTITLE:
1193 ✗ switch (st->codecpar->codec_id) {
1194 ✗ case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
1195 ✗ ts_st->pid = ts->m2ts_pgssub_pid++;
1196 ✗ break;
1197 ✗ case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
1198 ✗ ts_st->pid = ts->m2ts_textsub_pid++;
1199 ✗ break;
1200 }
1201 ✗ break;
1202 }
1203 ✗ if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1204 ✗ ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1205 ✗ ts->m2ts_pgssub_pid > M2TS_PGSSUB_START_PID + 32 ||
1206 ✗ ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1207 ✗ ts_st->pid < 16) {
1208 ✗ av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1209 ✗ return AVERROR(EINVAL);
1210 }
1211 } else {
1212 21 ts_st->pid = ts->start_pid + i;
1213 }
1214 } else {
1215 ✗ ts_st->pid = st->id;
1216 }
1217
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 21 if (ts_st->pid >= 0x1FFF) {
1218 ✗ av_log(s, AV_LOG_ERROR,
1219 "Invalid stream id %d, must be less than 8191\n", st->id);
1220 ✗ return AVERROR(EINVAL);
1221 }
1222
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 42 for (j = 0; j < ts->nb_services; j++) {
1223
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 21 if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1224 ✗ av_log(s, AV_LOG_ERROR,
1225 ✗ "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1226 ✗ return AVERROR(EINVAL);
1227 }
1228
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 21 if (ts_st->pid == ts->services[j]->pmt.pid) {
1229 ✗ av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1230 ✗ return AVERROR(EINVAL);
1231 }
1232 }
1233
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 22 for (j = 0; j < i; j++) {
1234 1 MpegTSWriteStream *ts_st_prev = s->streams[j]->priv_data;
1235
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 1 if (ts_st_prev->pid == ts_st->pid) {
1236 ✗ av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1237 ✗ return AVERROR(EINVAL);
1238 }
1239 }
1240 21 ts_st->payload_pts = AV_NOPTS_VALUE;
1241 21 ts_st->payload_dts = AV_NOPTS_VALUE;
1242 21 ts_st->cc = 15;
1243 21 ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1244
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 21 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1245 ✗ st->codecpar->extradata_size > 0) {
1246 AVStream *ast;
1247 ✗ ts_st->amux = avformat_alloc_context();
1248 ✗ if (!ts_st->amux) {
1249 ✗ return AVERROR(ENOMEM);
1250 }
1251 ✗ ts_st->amux->oformat =
1252 ✗ av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1253 NULL, NULL);
1254 ✗ if (!ts_st->amux->oformat) {
1255 ✗ return AVERROR(EINVAL);
1256 }
1257 ✗ if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1258 ✗ return AVERROR(ENOMEM);
1259 }
1260 ✗ ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1261 ✗ if (ret != 0)
1262 ✗ return ret;
1263 ✗ ast->time_base = st->time_base;
1264 ✗ ret = avformat_write_header(ts_st->amux, NULL);
1265 ✗ if (ret < 0)
1266 ✗ return ret;
1267 }
1268
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 21 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1269 ✗ ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
1270 }
1271 }
1272
1273
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 20 if (ts->copyts < 1)
1274 20 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1275
1276 20 select_pcr_streams(s);
1277
1278 20 ts->last_pat_ts = AV_NOPTS_VALUE;
1279 20 ts->last_sdt_ts = AV_NOPTS_VALUE;
1280 20 ts->last_nit_ts = AV_NOPTS_VALUE;
1281 20 ts->pat_period = av_rescale(ts->pat_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1282 20 ts->sdt_period = av_rescale(ts->sdt_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1283 20 ts->nit_period = av_rescale(ts->nit_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1284
1285 /* assign provider name */
1286 20 provider = av_dict_get(s->metadata, "service_provider", NULL, 0);
1287
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 20 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
1288
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 20 if (encode_str8(ts->provider_name, provider_name) < 0) {
1289 ✗ av_log(s, AV_LOG_ERROR, "Too long provider name\n");
1290 ✗ return AVERROR(EINVAL);
1291 }
1292
1293
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 20 if (ts->mux_rate == 1)
1294 20 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1295 else
1296 ✗ av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1297 20 av_log(s, AV_LOG_VERBOSE,
1298 "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms",
1299 av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1300 av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1301
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 20 if (ts->flags & MPEGTS_FLAG_NIT)
1302 ✗ av_log(s, AV_LOG_VERBOSE, ", nit every %"PRId64" ms", av_rescale(ts->nit_period, 1000, PCR_TIME_BASE));
1303 20 av_log(s, AV_LOG_VERBOSE, "\n");
1304
1305 20 return 0;
1306 }
1307
1308 /* send SDT, NIT, PAT and PMT tables regularly */
1309 64443 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int force_nit, int64_t pcr)
1310 {
1311 64443 MpegTSWrite *ts = s->priv_data;
1312 int i;
1313
1314
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 64443 if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1315
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 64423 (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1316 force_sdt
1317 ) {
1318
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 159 if (pcr != AV_NOPTS_VALUE)
1319 159 ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1320 159 mpegts_write_sdt(s);
1321 }
1322
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 64443 if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1323
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 64423 (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1324 force_pat) {
1325
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 523 if (pcr != AV_NOPTS_VALUE)
1326 523 ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1327 523 mpegts_write_pat(s);
1328
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 1046 for (i = 0; i < ts->nb_services; i++)
1329 523 mpegts_write_pmt(s, ts->services[i]);
1330 }
1331
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 64443 if ((pcr != AV_NOPTS_VALUE && ts->last_nit_ts == AV_NOPTS_VALUE) ||
1332
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 64423 (pcr != AV_NOPTS_VALUE && pcr - ts->last_nit_ts >= ts->nit_period) ||
1333 force_nit
1334 ) {
1335
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 416 if (pcr != AV_NOPTS_VALUE)
1336 416 ts->last_nit_ts = FFMAX(pcr, ts->last_nit_ts);
1337
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 416 if (ts->flags & MPEGTS_FLAG_NIT)
1338 ✗ mpegts_write_nit(s);
1339 }
1340 64443 }
1341
1342 3925 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1343 {
1344 3925 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1345
1346 3925 *buf++ = pcr_high >> 25;
1347 3925 *buf++ = pcr_high >> 17;
1348 3925 *buf++ = pcr_high >> 9;
1349 3925 *buf++ = pcr_high >> 1;
1350 3925 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1351 3925 *buf++ = pcr_low;
1352
1353 3925 return 6;
1354 }
1355
1356 /* Write a single null transport stream packet */
1357 ✗ static void mpegts_insert_null_packet(AVFormatContext *s)
1358 {
1359 uint8_t *q;
1360 uint8_t buf[TS_PACKET_SIZE];
1361
1362 ✗ q = buf;
1363 ✗ *q++ = 0x47;
1364 ✗ *q++ = 0x00 | 0x1f;
1365 ✗ *q++ = 0xff;
1366 ✗ *q++ = 0x10;
1367 ✗ memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1368 ✗ write_packet(s, buf);
1369 ✗ }
1370
1371 /* Write a single transport stream packet with a PCR and no payload */
1372 ✗ static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1373 {
1374 ✗ MpegTSWrite *ts = s->priv_data;
1375 ✗ MpegTSWriteStream *ts_st = st->priv_data;
1376 uint8_t *q;
1377 uint8_t buf[TS_PACKET_SIZE];
1378
1379 ✗ q = buf;
1380 ✗ *q++ = 0x47;
1381 ✗ *q++ = ts_st->pid >> 8;
1382 ✗ *q++ = ts_st->pid;
1383 ✗ *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1384 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1385 ✗ *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1386 ✗ *q++ = 0x10; /* Adaptation flags: PCR present */
1387 ✗ if (ts_st->discontinuity) {
1388 ✗ q[-1] |= 0x80;
1389 ✗ ts_st->discontinuity = 0;
1390 }
1391
1392 /* PCR coded into 6 bytes */
1393 ✗ q += write_pcr_bits(q, get_pcr(ts));
1394
1395 /* stuffing bytes */
1396 ✗ memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1397 ✗ write_packet(s, buf);
1398 ✗ }
1399
1400 4118 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1401 {
1402 int val;
1403
1404 4118 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1405 4118 *q++ = val;
1406 4118 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1407 4118 *q++ = val >> 8;
1408 4118 *q++ = val;
1409 4118 val = (((pts) & 0x7fff) << 1) | 1;
1410 4118 *q++ = val >> 8;
1411 4118 *q++ = val;
1412 4118 }
1413
1414 /* Set an adaptation field flag in an MPEG-TS packet*/
1415 7780 static void set_af_flag(uint8_t *pkt, int flag)
1416 {
1417 // expect at least one flag to set
1418
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 7780 av_assert0(flag);
1419
1420
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 7780 if ((pkt[3] & 0x20) == 0) {
1421 // no AF yet, set adaptation field flag
1422 3928 pkt[3] |= 0x20;
1423 // 1 byte length, no flags
1424 3928 pkt[4] = 1;
1425 3928 pkt[5] = 0;
1426 }
1427 7780 pkt[5] |= flag;
1428 7780 }
1429
1430 /* Extend the adaptation field by size bytes */
1431 3925 static void extend_af(uint8_t *pkt, int size)
1432 {
1433 // expect already existing adaptation field
1434
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 3925 av_assert0(pkt[3] & 0x20);
1435 3925 pkt[4] += size;
1436 3925 }
1437
1438 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1439 11705 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1440 {
1441
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 11705 if (pkt[3] & 0x20)
1442 11705 return pkt + 5 + pkt[4];
1443 else
1444 ✗ return pkt + 4;
1445 }
1446
1447 3997 static int get_pes_stream_id(AVFormatContext *s, AVStream *st, int stream_id, int *async)
1448 {
1449 3997 MpegTSWrite *ts = s->priv_data;
1450 3997 *async = 0;
1451
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 3997 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1452
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 151 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1453 ✗ return STREAM_ID_EXTENDED_STREAM_ID;
1454 else
1455 151 return STREAM_ID_VIDEO_STREAM_0;
1456
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 3846 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1457
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 3846 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1458
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 66 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1459
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 66 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1460 3780 return STREAM_ID_AUDIO_STREAM_0;
1461
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 66 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1462
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 66 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1463 ✗ ts->m2ts_mode) {
1464 ✗ return STREAM_ID_EXTENDED_STREAM_ID;
1465
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 66 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1466 ✗ st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
1467 ✗ return STREAM_ID_PRIVATE_STREAM_1;
1468
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 66 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1469 ✗ if (st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV &&
1470 stream_id == STREAM_ID_PRIVATE_STREAM_1) /* asynchronous KLV */
1471 ✗ *async = 1;
1472 ✗ return stream_id != -1 ? stream_id : STREAM_ID_METADATA_STREAM;
1473 } else {
1474 66 return STREAM_ID_PRIVATE_STREAM_1;
1475 }
1476 }
1477
1478 /* Add a PES header to the front of the payload, and segment into an integer
1479 * number of TS packets. The final TS packet is padded using an oversized
1480 * adaptation header to exactly fill the last TS packet.
1481 * NOTE: 'payload' contains a complete PES payload. */
1482 3997 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1483 const uint8_t *payload, int payload_size,
1484 int64_t pts, int64_t dts, int key, int stream_id)
1485 {
1486 3997 MpegTSWriteStream *ts_st = st->priv_data;
1487 3997 MpegTSWrite *ts = s->priv_data;
1488 uint8_t buf[TS_PACKET_SIZE];
1489 uint8_t *q;
1490 int val, is_start, len, header_len, write_pcr, flags;
1491 int afc_len, stuffing_len;
1492 3997 int is_dvb_subtitle = (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE);
1493 3997 int is_dvb_teletext = (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT);
1494 3997 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1495
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 3997 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1496 3997 int force_sdt = 0;
1497 3997 int force_nit = 0;
1498
1499
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 3997 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1500
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 3997 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1501 ✗ force_pat = 1;
1502 }
1503
1504
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 3997 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1505 61 force_pat = 1;
1506 61 force_sdt = 1;
1507 61 force_nit = 1;
1508 61 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1509 }
1510
1511 3997 is_start = 1;
1512
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 68440 while (payload_size > 0) {
1513 64443 int64_t pcr = AV_NOPTS_VALUE;
1514
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 64443 if (ts->mux_rate > 1)
1515 ✗ pcr = get_pcr(ts);
1516
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 64443 else if (dts != AV_NOPTS_VALUE)
1517 64443 pcr = (dts - delay) * 300;
1518
1519 64443 retransmit_si_info(s, force_pat, force_sdt, force_nit, pcr);
1520 64443 force_pat = 0;
1521 64443 force_sdt = 0;
1522 64443 force_nit = 0;
1523
1524 64443 write_pcr = 0;
1525
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 64443 if (ts->mux_rate > 1) {
1526 /* Send PCR packets for all PCR streams if needed */
1527 ✗ pcr = get_pcr(ts);
1528 ✗ if (pcr >= ts->next_pcr) {
1529 ✗ int64_t next_pcr = INT64_MAX;
1530 ✗ for (int i = 0; i < s->nb_streams; i++) {
1531 /* Make the current stream the last, because for that we
1532 * can insert the pcr into the payload later */
1533 ✗ int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1534 ✗ AVStream *st2 = s->streams[st2_index];
1535 ✗ MpegTSWriteStream *ts_st2 = st2->priv_data;
1536 ✗ if (ts_st2->pcr_period) {
1537 ✗ if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1538 ✗ ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1539 ✗ if (st2 != st) {
1540 ✗ mpegts_insert_pcr_only(s, st2);
1541 ✗ pcr = get_pcr(ts);
1542 } else {
1543 ✗ write_pcr = 1;
1544 }
1545 }
1546 ✗ next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1547 }
1548 }
1549 ✗ ts->next_pcr = next_pcr;
1550 }
1551 ✗ if (dts != AV_NOPTS_VALUE && (dts - pcr / 300) > delay) {
1552 /* pcr insert gets priority over null packet insert */
1553 ✗ if (write_pcr)
1554 ✗ mpegts_insert_pcr_only(s, st);
1555 else
1556 ✗ mpegts_insert_null_packet(s);
1557 /* recalculate write_pcr and possibly retransmit si_info */
1558 ✗ continue;
1559 }
1560
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 64443 } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1561
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 64398 if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1562 2648 ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1563 2648 write_pcr = 1;
1564 }
1565 }
1566
1567 /* prepare packet header */
1568 64443 q = buf;
1569 64443 *q++ = 0x47;
1570 64443 val = ts_st->pid >> 8;
1571
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 64443 if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1572 ✗ val |= 0x20;
1573
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 64443 if (is_start)
1574 3997 val |= 0x40;
1575 64443 *q++ = val;
1576 64443 *q++ = ts_st->pid;
1577 64443 ts_st->cc = ts_st->cc + 1 & 0xf;
1578 64443 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1579
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 64443 if (ts_st->discontinuity) {
1580 ✗ set_af_flag(buf, 0x80);
1581 ✗ q = get_ts_payload_start(buf);
1582 ✗ ts_st->discontinuity = 0;
1583 }
1584
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 64443 if (!(ts->flags & MPEGTS_FLAG_OMIT_RAI) &&
1585
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 61686 key && is_start && pts != AV_NOPTS_VALUE &&
1586 !is_dvb_teletext /* adaptation+payload forbidden for teletext (ETSI EN 300 472 V1.3.1 4.1) */) {
1587 // set Random Access for key frames
1588
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 3855 if (ts_st->pcr_period)
1589 3852 write_pcr = 1;
1590 3855 set_af_flag(buf, 0x40);
1591 3855 q = get_ts_payload_start(buf);
1592 }
1593
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 64443 if (write_pcr) {
1594 3925 set_af_flag(buf, 0x10);
1595 3925 q = get_ts_payload_start(buf);
1596 // add 11, pcr references the last byte of program clock reference base
1597
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 3925 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1598 ✗ av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1599 3925 extend_af(buf, write_pcr_bits(q, pcr));
1600 3925 q = get_ts_payload_start(buf);
1601 }
1602
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 64443 if (is_start) {
1603 3997 int pes_extension = 0;
1604 3997 int pes_header_stuffing_bytes = 0;
1605 int async;
1606 /* write PES header */
1607 3997 *q++ = 0x00;
1608 3997 *q++ = 0x00;
1609 3997 *q++ = 0x01;
1610 3997 *q++ = stream_id = get_pes_stream_id(s, st, stream_id, &async);
1611
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 3997 if (async)
1612 ✗ pts = dts = AV_NOPTS_VALUE;
1613
1614 3997 header_len = 0;
1615
1616
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 3997 if (stream_id != STREAM_ID_PROGRAM_STREAM_MAP &&
1617
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 3997 stream_id != STREAM_ID_PADDING_STREAM &&
1618
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 3997 stream_id != STREAM_ID_PRIVATE_STREAM_2 &&
1619
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 3997 stream_id != STREAM_ID_ECM_STREAM &&
1620
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 3997 stream_id != STREAM_ID_EMM_STREAM &&
1621
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 3997 stream_id != STREAM_ID_PROGRAM_STREAM_DIRECTORY &&
1622
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 3997 stream_id != STREAM_ID_DSMCC_STREAM &&
1623 stream_id != STREAM_ID_TYPE_E_STREAM) {
1624
1625 3997 flags = 0;
1626
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 3997 if (pts != AV_NOPTS_VALUE) {
1627 3997 header_len += 5;
1628 3997 flags |= 0x80;
1629 }
1630
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 3997 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1631 121 header_len += 5;
1632 121 flags |= 0x40;
1633 }
1634
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 3997 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1635
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 151 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1636 /* set PES_extension_flag */
1637 ✗ pes_extension = 1;
1638 ✗ flags |= 0x01;
1639
1640 /* One byte for PES2 extension flag +
1641 * one byte for extension length +
1642 * one byte for extension id */
1643 ✗ header_len += 3;
1644 }
1645 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1646 * otherwise it will not play sound on blu-ray
1647 */
1648
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 3997 if (ts->m2ts_mode &&
1649 ✗ st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1650 ✗ st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1651 /* set PES_extension_flag */
1652 ✗ pes_extension = 1;
1653 ✗ flags |= 0x01;
1654 ✗ header_len += 3;
1655 }
1656
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 3997 if (is_dvb_teletext) {
1657 ✗ pes_header_stuffing_bytes = 0x24 - header_len;
1658 ✗ header_len = 0x24;
1659 }
1660 3997 len = payload_size + header_len + 3;
1661 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1662
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 3997 if (is_dvb_subtitle) {
1663 ✗ len += 3;
1664 ✗ payload_size++;
1665 }
1666
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 3997 if (len > 0xffff)
1667 ✗ len = 0;
1668
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 3997 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1669 151 len = 0;
1670 }
1671 3997 *q++ = len >> 8;
1672 3997 *q++ = len;
1673 3997 val = 0x80;
1674 /* data alignment indicator is required for subtitle and data streams */
1675
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 3997 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1676 ✗ val |= 0x04;
1677 3997 *q++ = val;
1678 3997 *q++ = flags;
1679 3997 *q++ = header_len;
1680
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 3997 if (pts != AV_NOPTS_VALUE) {
1681 3997 write_pts(q, flags >> 6, pts);
1682 3997 q += 5;
1683 }
1684
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 3997 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1685 121 write_pts(q, 1, dts);
1686 121 q += 5;
1687 }
1688
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 3997 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1689 ✗ flags = 0x01; /* set PES_extension_flag_2 */
1690 ✗ *q++ = flags;
1691 ✗ *q++ = 0x80 | 0x01; /* marker bit + extension length */
1692 /* Set the stream ID extension flag bit to 0 and
1693 * write the extended stream ID. */
1694 ✗ *q++ = 0x00 | 0x60;
1695 }
1696 /* For Blu-ray AC3 Audio Setting extended flags */
1697
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 3997 if (ts->m2ts_mode &&
1698 ✗ pes_extension &&
1699 ✗ st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1700 ✗ flags = 0x01; /* set PES_extension_flag_2 */
1701 ✗ *q++ = flags;
1702 ✗ *q++ = 0x80 | 0x01; /* marker bit + extension length */
1703 ✗ *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1704 }
1705
1706
1707
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 3997 if (is_dvb_subtitle) {
1708 /* First two fields of DVB subtitles PES data:
1709 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1710 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1711 ✗ *q++ = 0x20;
1712 ✗ *q++ = 0x00;
1713 }
1714
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 3997 if (is_dvb_teletext) {
1715 ✗ memset(q, 0xff, pes_header_stuffing_bytes);
1716 ✗ q += pes_header_stuffing_bytes;
1717 }
1718 } else {
1719 ✗ len = payload_size;
1720 ✗ *q++ = len >> 8;
1721 ✗ *q++ = len;
1722 }
1723 3997 is_start = 0;
1724 }
1725 /* header size */
1726 64443 header_len = q - buf;
1727 /* data len */
1728 64443 len = TS_PACKET_SIZE - header_len;
1729
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 64443 if (len > payload_size)
1730 3996 len = payload_size;
1731 64443 stuffing_len = TS_PACKET_SIZE - header_len - len;
1732
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 64443 if (stuffing_len > 0) {
1733 /* add stuffing with AFC */
1734
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 3996 if (buf[3] & 0x20) {
1735 /* stuffing already present: increase its size */
1736 2 afc_len = buf[4] + 1;
1737 2 memmove(buf + 4 + afc_len + stuffing_len,
1738 2 buf + 4 + afc_len,
1739 2 header_len - (4 + afc_len));
1740 2 buf[4] += stuffing_len;
1741 2 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1742 } else {
1743 /* add stuffing */
1744 3994 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1745 3994 buf[3] |= 0x20;
1746 3994 buf[4] = stuffing_len - 1;
1747
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 3994 if (stuffing_len >= 2) {
1748 3992 buf[5] = 0x00;
1749 3992 memset(buf + 6, 0xff, stuffing_len - 2);
1750 }
1751 }
1752 }
1753
1754
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 64443 if (is_dvb_subtitle && payload_size == len) {
1755 ✗ memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1756 ✗ buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1757 } else {
1758 64443 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1759 }
1760
1761 64443 payload += len;
1762 64443 payload_size -= len;
1763 64443 write_packet(s, buf);
1764 }
1765 3997 ts_st->prev_payload_key = key;
1766 3997 }
1767
1768 205 static int check_h26x_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt, const char *codec)
1769 {
1770
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 205 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1771 ✗ if (!st->nb_frames) {
1772 ✗ av_log(s, AV_LOG_ERROR, "%s bitstream malformed, "
1773 "no startcode found, use the video bitstream filter '%s_mp4toannexb' to fix it "
1774 "('-bsf:v %s_mp4toannexb' option with ffmpeg)\n", codec, codec, codec);
1775 ✗ return AVERROR_INVALIDDATA;
1776 }
1777 ✗ av_log(s, AV_LOG_WARNING, "%s bitstream error, startcode missing, size %d", codec, pkt->size);
1778 ✗ if (pkt->size)
1779 ✗ av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1780 ✗ av_log(s, AV_LOG_WARNING, "\n");
1781 }
1782 205 return 0;
1783 }
1784
1785 205 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1786 {
1787 205 return check_h26x_startcode(s, st, pkt, "h264");
1788 }
1789
1790 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1791 * Released under the LGPL v2.1+, written by
1792 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1793 */
1794 ✗ static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1795 {
1796 static const int durations[32] = {
1797 480, 960, 1920, 2880, /* Silk NB */
1798 480, 960, 1920, 2880, /* Silk MB */
1799 480, 960, 1920, 2880, /* Silk WB */
1800 480, 960, /* Hybrid SWB */
1801 480, 960, /* Hybrid FB */
1802 120, 240, 480, 960, /* CELT NB */
1803 120, 240, 480, 960, /* CELT NB */
1804 120, 240, 480, 960, /* CELT NB */
1805 120, 240, 480, 960, /* CELT NB */
1806 };
1807 int toc, frame_duration, nframes, duration;
1808
1809 ✗ if (pkt->size < 1)
1810 ✗ return 0;
1811
1812 ✗ toc = pkt->data[0];
1813
1814 ✗ frame_duration = durations[toc >> 3];
1815 ✗ switch (toc & 3) {
1816 ✗ case 0:
1817 ✗ nframes = 1;
1818 ✗ break;
1819 ✗ case 1:
1820 ✗ nframes = 2;
1821 ✗ break;
1822 ✗ case 2:
1823 ✗ nframes = 2;
1824 ✗ break;
1825 ✗ case 3:
1826 ✗ if (pkt->size < 2)
1827 ✗ return 0;
1828 ✗ nframes = pkt->data[1] & 63;
1829 ✗ break;
1830 }
1831
1832 ✗ duration = nframes * frame_duration;
1833 ✗ if (duration > 5760) {
1834 ✗ av_log(s, AV_LOG_WARNING,
1835 "Opus packet duration > 120 ms, invalid");
1836 ✗ return 0;
1837 }
1838
1839 ✗ return duration;
1840 }
1841
1842 ✗ static uint8_t *h26x_prefix_aud(const uint8_t *aud, const int aud_size,
1843 const uint8_t *extra_data, const int extra_size, AVPacket *pkt, int *size)
1844 {
1845 ✗ const int sz = 4; //start code size
1846 ✗ uint8_t *data = av_malloc(pkt->size + sz + aud_size + extra_size);
1847 ✗ if (!data)
1848 ✗ return NULL;
1849 ✗ AV_WB32(data, 0x00000001);
1850 ✗ memcpy(data + sz, aud, aud_size);
1851 ✗ memcpy(data + sz + aud_size, extra_data, extra_size);
1852 ✗ memcpy(data + sz + aud_size + extra_size, pkt->data, pkt->size);
1853 ✗ *size = pkt->size + sz + aud_size + extra_size;
1854 ✗ return data;
1855 }
1856
1857 #define H264_NAL_TYPE(state) (state & 0x1f)
1858 #define HEVC_NAL_TYPE(state) ((state & 0x7e) >> 1)
1859 #define VVC_NAL_TYPE(state) ((state >> 11) & 0x1f)
1860 7764 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1861 {
1862 7764 AVStream *st = s->streams[pkt->stream_index];
1863 7764 int size = pkt->size;
1864 7764 const uint8_t *buf = pkt->data;
1865 7764 uint8_t *data = NULL;
1866 7764 MpegTSWrite *ts = s->priv_data;
1867 7764 MpegTSWriteStream *ts_st = st->priv_data;
1868 7764 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1869 7764 const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1870 7764 int64_t dts = pkt->dts, pts = pkt->pts;
1871 7764 int opus_samples = 0;
1872 size_t side_data_size;
1873 7764 uint8_t *side_data = NULL;
1874 7764 int stream_id = -1;
1875
1876 7764 side_data = av_packet_get_side_data(pkt,
1877 AV_PKT_DATA_MPEGTS_STREAM_ID,
1878 &side_data_size);
1879
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 7764 if (side_data)
1880 ✗ stream_id = side_data[0];
1881
1882
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 7764 if (!ts->first_dts_checked && dts != AV_NOPTS_VALUE) {
1883 20 ts->first_pcr += dts * 300;
1884 20 ts->first_dts_checked = 1;
1885 }
1886
1887
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 7764 if (ts->copyts < 1) {
1888
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 7764 if (pts != AV_NOPTS_VALUE)
1889 7764 pts += delay;
1890
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 7764 if (dts != AV_NOPTS_VALUE)
1891 7764 dts += delay;
1892 }
1893
1894
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 7764 if (!ts_st->first_timestamp_checked && (pts == AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE)) {
1895 ✗ av_log(s, AV_LOG_ERROR, "first pts and dts value must be set\n");
1896 ✗ return AVERROR_INVALIDDATA;
1897 }
1898 7764 ts_st->first_timestamp_checked = 1;
1899
1900
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 7764 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1901 126 const uint8_t *p = buf, *buf_end = p + size;
1902 126 const uint8_t *found_aud = NULL, *found_aud_end = NULL;
1903 int nal_type;
1904 126 uint32_t state = -1;
1905
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 126 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1906 126 int ret = ff_check_h264_startcode(s, st, pkt);
1907
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 126 if (ret < 0)
1908 ✗ return ret;
1909
1910
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 126 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1911 6 extradd = 0;
1912
1913 /* Ensure that all pictures are prefixed with an AUD, and that
1914 * IDR pictures are also prefixed with SPS and PPS. SPS and PPS
1915 * are assumed to be available in 'extradata' if not found in-band. */
1916 do {
1917 127 p = avpriv_find_start_code(p, buf_end, &state);
1918 127 nal_type = H264_NAL_TYPE(state);
1919 127 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", nal_type);
1920
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 127 if (nal_type == H264_NAL_SPS)
1921 ✗ extradd = 0;
1922
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 127 if (nal_type == H264_NAL_AUD) {
1923 126 found_aud = p - 4; // start of the 0x000001 start code.
1924 126 found_aud_end = p + 1; // first byte past the AUD.
1925
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 126 if (found_aud < buf)
1926 ✗ found_aud = buf;
1927
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 126 if (buf_end < found_aud_end)
1928 ✗ found_aud_end = buf_end;
1929 }
1930 } while (p < buf_end
1931
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 127 && nal_type != H264_NAL_IDR_SLICE
1932
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 127 && nal_type != H264_NAL_SLICE
1933
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 254 && (extradd > 0 || !found_aud));
1934
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 126 if (nal_type != H264_NAL_IDR_SLICE)
1935 126 extradd = 0;
1936
1937
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 126 if (!found_aud) {
1938 /* Prefix 'buf' with the missing AUD, and extradata if needed. */
1939 ✗ const uint8_t aud[] = {
1940 H264_NAL_AUD,
1941 0xf0, // any slice type (0xe) + rbsp stop one bit
1942 };
1943 ✗ buf = data = h26x_prefix_aud(aud, FF_ARRAY_ELEMS(aud),
1944 ✗ st->codecpar->extradata, extradd, pkt, &size);
1945 ✗ if (!data)
1946 ✗ return AVERROR(ENOMEM);
1947
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 126 } else if (extradd != 0) {
1948 /* Move the AUD up to the beginning of the frame, where the H.264
1949 * spec requires it to appear. Emit the extradata after it. */
1950 PutByteContext pb;
1951 ✗ const int new_pkt_size = pkt->size + 1 + extradd;
1952 ✗ data = av_malloc(new_pkt_size);
1953 ✗ if (!data)
1954 ✗ return AVERROR(ENOMEM);
1955 ✗ bytestream2_init_writer(&pb, data, new_pkt_size);
1956 ✗ bytestream2_put_byte(&pb, 0x00);
1957 ✗ bytestream2_put_buffer(&pb, found_aud, found_aud_end - found_aud);
1958 ✗ bytestream2_put_buffer(&pb, st->codecpar->extradata, extradd);
1959 ✗ bytestream2_put_buffer(&pb, pkt->data, found_aud - pkt->data);
1960 ✗ bytestream2_put_buffer(&pb, found_aud_end, buf_end - found_aud_end);
1961 ✗ av_assert0(new_pkt_size == bytestream2_tell_p(&pb));
1962 ✗ buf = data;
1963 ✗ size = new_pkt_size;
1964 }
1965
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 7638 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1966 ✗ if (pkt->size < 2) {
1967 ✗ av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1968 ✗ return AVERROR_INVALIDDATA;
1969 }
1970 ✗ if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1971 int ret;
1972 ✗ AVPacket *pkt2 = ts->pkt;
1973
1974 ✗ if (!ts_st->amux) {
1975 ✗ av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1976 "and extradata missing\n");
1977 } else {
1978 ✗ av_packet_unref(pkt2);
1979 ✗ pkt2->data = pkt->data;
1980 ✗ pkt2->size = pkt->size;
1981 ✗ av_assert0(pkt->dts != AV_NOPTS_VALUE);
1982 ✗ pkt2->dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1983
1984 ✗ ret = avio_open_dyn_buf(&ts_st->amux->pb);
1985 ✗ if (ret < 0)
1986 ✗ return ret;
1987
1988 ✗ ret = av_write_frame(ts_st->amux, pkt2);
1989 ✗ if (ret < 0) {
1990 ✗ ffio_free_dyn_buf(&ts_st->amux->pb);
1991 ✗ return ret;
1992 }
1993 ✗ size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1994 ✗ ts_st->amux->pb = NULL;
1995 ✗ buf = data;
1996 }
1997 }
1998
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 7638 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1999 ✗ const uint8_t *p = buf, *buf_end = p + size;
2000 ✗ uint32_t state = -1;
2001 int nal_type;
2002 ✗ int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
2003 ✗ int ret = check_h26x_startcode(s, st, pkt, "hevc");
2004 ✗ if (ret < 0)
2005 ✗ return ret;
2006
2007 ✗ if (extradd && AV_RB24(st->codecpar->extradata) > 1)
2008 ✗ extradd = 0;
2009
2010 do {
2011 ✗ p = avpriv_find_start_code(p, buf_end, &state);
2012 ✗ nal_type = HEVC_NAL_TYPE(state);
2013 ✗ av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", nal_type);
2014 ✗ if (nal_type == HEVC_NAL_VPS)
2015 ✗ extradd = 0;
2016 ✗ } while (p < buf_end && nal_type != HEVC_NAL_AUD && nal_type >= HEVC_NAL_VPS);
2017
2018 ✗ if (nal_type < HEVC_NAL_BLA_W_LP || nal_type >= HEVC_NAL_RSV_VCL24)
2019 ✗ extradd = 0;
2020 ✗ if (nal_type != HEVC_NAL_AUD) { // AUD NAL
2021 ✗ const uint8_t aud[] = {
2022 (HEVC_NAL_AUD << 1),
2023 0x01,
2024 0x50, // any slice type (0x4) + rbsp stop one bit
2025 };
2026 ✗ buf = data = h26x_prefix_aud(aud, FF_ARRAY_ELEMS(aud),
2027 ✗ st->codecpar->extradata, extradd, pkt, &size);
2028 ✗ if (!data)
2029 ✗ return AVERROR(ENOMEM);
2030 }
2031
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 7638 } else if (st->codecpar->codec_id == AV_CODEC_ID_VVC) {
2032 ✗ const uint8_t *p = buf, *buf_end = p + size;
2033 ✗ uint32_t state = -1;
2034 ✗ uint32_t nal_type = -1;
2035 ✗ int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
2036 ✗ int ret = check_h26x_startcode(s, st, pkt, "vvc");
2037 ✗ if (ret < 0)
2038 ✗ return ret;
2039
2040 ✗ if (extradd && AV_RB24(st->codecpar->extradata) > 1)
2041 ✗ extradd = 0;
2042
2043 do {
2044 ✗ p = avpriv_find_start_code(p, buf_end, &state);
2045 // state contains byte behind start code, p points 2 bytes behind start code
2046 ✗ nal_type = VVC_NAL_TYPE(state);
2047 ✗ av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", nal_type );
2048 ✗ if (nal_type == VVC_VPS_NUT)
2049 ✗ extradd = 0;
2050 ✗ } while (p < buf_end && nal_type != VVC_AUD_NUT && nal_type >= VVC_OPI_NUT);
2051
2052 ✗ if (nal_type >= VVC_OPI_NUT)
2053 ✗ extradd = 0;
2054 ✗ if (nal_type != VVC_AUD_NUT) { // AUD NAL
2055 ✗ const uint8_t aud[] = {
2056 0, // forbidden_zero_bit, nuh_reserved_zero_bit, nuh_layer_id
2057 (VVC_AUD_NUT << 3) | 1, // nal_unit_type, nuh_temporal_id_plus1(1)
2058 ✗ (pkt->flags & AV_PKT_FLAG_KEY) << 7 | 0x28, // aud_irap_or_gdr_flag, aud_pic_type(2), rbsp_stop_one_bit
2059 };
2060 ✗ buf = data = h26x_prefix_aud(aud, FF_ARRAY_ELEMS(aud), st->codecpar->extradata, extradd, pkt, &size);
2061 ✗ if (!data)
2062 ✗ return AVERROR(ENOMEM);
2063 }
2064
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 7638 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
2065 ✗ if (pkt->size < 2) {
2066 ✗ av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
2067 ✗ return AVERROR_INVALIDDATA;
2068 }
2069
2070 /* Add Opus control header */
2071 ✗ if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
2072 uint8_t *side_data;
2073 size_t side_data_size;
2074 int i, n;
2075 int ctrl_header_size;
2076 ✗ int trim_start = 0, trim_end = 0;
2077
2078 ✗ opus_samples = opus_get_packet_samples(s, pkt);
2079
2080 ✗ side_data = av_packet_get_side_data(pkt,
2081 AV_PKT_DATA_SKIP_SAMPLES,
2082 &side_data_size);
2083
2084 ✗ if (side_data && side_data_size >= 10) {
2085 ✗ trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
2086 }
2087
2088 ✗ ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
2089 ✗ if (ts_st->opus_pending_trim_start)
2090 ✗ ctrl_header_size += 2;
2091 ✗ if (trim_end)
2092 ✗ ctrl_header_size += 2;
2093
2094 ✗ data = av_malloc(ctrl_header_size);
2095 ✗ if (!data)
2096 ✗ return AVERROR(ENOMEM);
2097
2098 ✗ data[0] = 0x7f;
2099 ✗ data[1] = 0xe0;
2100 ✗ if (ts_st->opus_pending_trim_start)
2101 ✗ data[1] |= 0x10;
2102 ✗ if (trim_end)
2103 ✗ data[1] |= 0x08;
2104
2105 ✗ n = pkt->size;
2106 ✗ i = 2;
2107 do {
2108 ✗ data[i] = FFMIN(n, 255);
2109 ✗ n -= 255;
2110 ✗ i++;
2111 ✗ } while (n >= 0);
2112
2113 ✗ av_assert0(2 + pkt->size / 255 + 1 == i);
2114
2115 ✗ if (ts_st->opus_pending_trim_start) {
2116 ✗ trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
2117 ✗ AV_WB16(data + i, trim_start);
2118 ✗ i += 2;
2119 ✗ ts_st->opus_pending_trim_start -= trim_start;
2120 }
2121 ✗ if (trim_end) {
2122 ✗ trim_end = FFMIN(trim_end, opus_samples - trim_start);
2123 ✗ AV_WB16(data + i, trim_end);
2124 ✗ i += 2;
2125 }
2126
2127 ✗ memcpy(data + i, pkt->data, pkt->size);
2128 ✗ buf = data;
2129 ✗ size = ctrl_header_size;
2130 } else {
2131 /* TODO: Can we get TS formatted data here? If so we will
2132 * need to count the samples of that too! */
2133 ✗ av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
2134 }
2135
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 7638 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3 && !ts_st->dvb_ac3_desc) {
2136 ✗ AC3HeaderInfo *hdr = NULL;
2137
2138 ✗ if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) >= 0) {
2139 uint8_t number_of_channels_flag;
2140 uint8_t service_type_flag;
2141 ✗ uint8_t full_service_flag = 1;
2142 DVBAC3Descriptor *dvb_ac3_desc;
2143
2144 ✗ dvb_ac3_desc = av_mallocz(sizeof(*dvb_ac3_desc));
2145 ✗ if (!dvb_ac3_desc) {
2146 ✗ av_free(hdr);
2147 ✗ return AVERROR(ENOMEM);
2148 }
2149
2150 ✗ service_type_flag = hdr->bitstream_mode;
2151 ✗ switch (hdr->channel_mode) {
2152 ✗ case AC3_CHMODE_DUALMONO:
2153 ✗ number_of_channels_flag = 1;
2154 ✗ break;
2155 ✗ case AC3_CHMODE_MONO:
2156 ✗ number_of_channels_flag = 0;
2157 ✗ break;
2158 ✗ case AC3_CHMODE_STEREO:
2159 ✗ if (hdr->dolby_surround_mode == AC3_DSURMOD_ON)
2160 ✗ number_of_channels_flag = 3;
2161 else
2162 ✗ number_of_channels_flag = 2;
2163 ✗ break;
2164 ✗ case AC3_CHMODE_3F:
2165 case AC3_CHMODE_2F1R:
2166 case AC3_CHMODE_3F1R:
2167 case AC3_CHMODE_2F2R:
2168 case AC3_CHMODE_3F2R:
2169 ✗ number_of_channels_flag = 4;
2170 ✗ break;
2171 ✗ default: /* reserved */
2172 ✗ number_of_channels_flag = 7;
2173 ✗ break;
2174 }
2175
2176 ✗ if (service_type_flag == 1 || service_type_flag == 4 ||
2177 ✗ (service_type_flag == 7 && !number_of_channels_flag))
2178 ✗ full_service_flag = 0;
2179
2180 ✗ dvb_ac3_desc->component_type_flag = 1;
2181 ✗ dvb_ac3_desc->component_type = (full_service_flag << 6) |
2182 ✗ ((service_type_flag & 0x7) << 3) |
2183 ✗ (number_of_channels_flag & 0x7);
2184 ✗ dvb_ac3_desc->bsid_flag = 1;
2185 ✗ dvb_ac3_desc->bsid = hdr->bitstream_id;
2186 ✗ dvb_ac3_desc->mainid_flag = 0;
2187 ✗ dvb_ac3_desc->asvc_flag = 0;
2188
2189 ✗ ts_st->dvb_ac3_desc = dvb_ac3_desc;
2190 }
2191 ✗ av_free(hdr);
2192
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 7638 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_BLURAY && ts->m2ts_mode) {
2193 ✗ mpegts_write_pes(s, st, buf, size, pts, dts,
2194 ✗ pkt->flags & AV_PKT_FLAG_KEY, stream_id);
2195 ✗ return 0;
2196 }
2197
2198
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 7764 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
2199
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 3767 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
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 3767 dts - ts_st->payload_dts >= max_audio_delay) ||
2201
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 3767 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
2202 3714 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
2203 ts_st->payload_pts, ts_st->payload_dts,
2204 3714 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
2205 3714 ts_st->payload_size = 0;
2206 3714 ts_st->opus_queued_samples = 0;
2207 }
2208
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 7764 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
2210
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 216 av_assert0(!ts_st->payload_size);
2211 // for video and subtitle, write a single pes packet
2212 216 mpegts_write_pes(s, st, buf, size, pts, dts,
2213 216 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
2214 216 ts_st->opus_queued_samples = 0;
2215 216 av_free(data);
2216 216 return 0;
2217 }
2218
2219
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 7548 if (!ts_st->payload_size) {
2220 3781 ts_st->payload_pts = pts;
2221 3781 ts_st->payload_dts = dts;
2222 3781 ts_st->payload_flags = pkt->flags;
2223 }
2224
2225 7548 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
2226 7548 ts_st->payload_size += size;
2227 7548 ts_st->opus_queued_samples += opus_samples;
2228
2229 7548 av_free(data);
2230
2231 7548 return 0;
2232 }
2233
2234 136 static void mpegts_write_flush(AVFormatContext *s)
2235 {
2236 136 MpegTSWrite *ts = s->priv_data;
2237 int i;
2238
2239 /* flush current packets */
2240
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 273 for (i = 0; i < s->nb_streams; i++) {
2241 137 AVStream *st = s->streams[i];
2242 137 MpegTSWriteStream *ts_st = st->priv_data;
2243
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 137 if (ts_st->payload_size > 0) {
2244 67 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
2245 ts_st->payload_pts, ts_st->payload_dts,
2246 67 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
2247 67 ts_st->payload_size = 0;
2248 67 ts_st->opus_queued_samples = 0;
2249 }
2250 }
2251
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 136 if (ts->m2ts_mode) {
2253 ✗ int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
2254 ✗ while (packets++ < 32)
2255 ✗ mpegts_insert_null_packet(s);
2256 }
2257 136 }
2258
2259 7880 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
2260 {
2261
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 7880 if (!pkt) {
2262 116 mpegts_write_flush(s);
2263 116 return 1;
2264 } else {
2265 7764 return mpegts_write_packet_internal(s, pkt);
2266 }
2267 }
2268
2269 20 static int mpegts_write_end(AVFormatContext *s)
2270 {
2271
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 20 if (s->pb)
2272 20 mpegts_write_flush(s);
2273
2274 20 return 0;
2275 }
2276
2277 20 static void mpegts_deinit(AVFormatContext *s)
2278 {
2279 20 MpegTSWrite *ts = s->priv_data;
2280 MpegTSService *service;
2281 int i;
2282
2283
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 41 for (i = 0; i < s->nb_streams; i++) {
2284 21 AVStream *st = s->streams[i];
2285 21 MpegTSWriteStream *ts_st = st->priv_data;
2286
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 21 if (ts_st) {
2287 21 av_freep(&ts_st->dvb_ac3_desc);
2288 21 av_freep(&ts_st->payload);
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 21 if (ts_st->amux) {
2290 ✗ avformat_free_context(ts_st->amux);
2291 ✗ ts_st->amux = NULL;
2292 }
2293 }
2294 }
2295
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 40 for (i = 0; i < ts->nb_services; i++) {
2297 20 service = ts->services[i];
2298 20 av_freep(&service);
2299 }
2300 20 av_freep(&ts->services);
2301 20 }
2302
2303 15 static int mpegts_check_bitstream(AVFormatContext *s, AVStream *st,
2304 const AVPacket *pkt)
2305 {
2306 const struct Entry {
2307 enum AVCodecID id;
2308 const char *bsf_name;
2309 uint8_t mask;
2310 uint8_t value;
2311 15 } list[] = {
2312 { AV_CODEC_ID_H264, "h264_mp4toannexb", 0xff, 0x01 /* configurationVersion in AVCDecoderConfigurationRecord */},
2313 { AV_CODEC_ID_HEVC, "hevc_mp4toannexb", 0xff, 0x01 /* configurationVersion in HEVCDecoderConfigurationRecord */},
2314 { AV_CODEC_ID_VVC, "vvc_mp4toannexb", 0xf8, 0xf8 /* reserved '11111'b in VVCDecoderConfigurationRecord */},
2315 };
2316
2317
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 57 for (int i = 0; i < FF_ARRAY_ELEMS(list); i++) {
2318 43 const struct Entry *e = list + i;
2319
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 43 if (e->id == st->codecpar->codec_id &&
2320
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 1 pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2321
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 1 (AV_RB24(pkt->data) != 0x000001 ||
2322 ✗ (st->codecpar->extradata_size > 0 &&
2323 ✗ ((st->codecpar->extradata[0] & e->mask) == e->value))))
2324 1 return ff_stream_add_bitstream_filter(st, e->bsf_name, NULL);
2325 }
2326 14 return 1;
2327 }
2328
2329 #define OFFSET(x) offsetof(MpegTSWrite, x)
2330 #define ENC AV_OPT_FLAG_ENCODING_PARAM
2331 static const AVOption options[] = {
2332 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
2333 OFFSET(transport_stream_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2334 { "mpegts_original_network_id", "Set original_network_id field.",
2335 OFFSET(original_network_id), AV_OPT_TYPE_INT, { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, ENC },
2336 { "mpegts_service_id", "Set service_id field.",
2337 OFFSET(service_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2338 { "mpegts_service_type", "Set service_type field.",
2339 OFFSET(service_type), AV_OPT_TYPE_INT, { .i64 = 0x01 }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2340 { "digital_tv", "Digital Television.",
2341 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2342 { "digital_radio", "Digital Radio.",
2343 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2344 { "teletext", "Teletext.",
2345 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2346 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
2347 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2348 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
2349 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2350 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
2351 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2352 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
2353 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2354 { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2355 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff, ENC, .unit = "mpegts_service_type" },
2356 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2357 OFFSET(pmt_start_pid), AV_OPT_TYPE_INT, { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2358 { "mpegts_start_pid", "Set the first pid.",
2359 OFFSET(start_pid), AV_OPT_TYPE_INT, { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2360 { "mpegts_m2ts_mode", "Enable m2ts mode.", OFFSET(m2ts_mode), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2361 { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
2362 { "pes_payload_size", "Minimum PES packet payload in bytes",
2363 OFFSET(pes_payload_size), AV_OPT_TYPE_INT, { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, ENC },
2364 { "mpegts_flags", "MPEG-TS muxing flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2365 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2366 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2367 { "latm", "Use LATM packetization for AAC",
2368 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2369 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2370 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2371 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2372 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2373 { "initial_discontinuity", "Mark initial packets as discontinuous",
2374 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2375 { "nit", "Enable NIT transmission",
2376 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_NIT}, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2377 { "omit_rai", "Disable writing of random access indicator",
2378 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_OMIT_RAI }, 0, INT_MAX, ENC, .unit = "mpegts_flags" },
2379 { "mpegts_copyts", "don't offset dts/pts", OFFSET(copyts), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2380 { "tables_version", "set PAT, PMT, SDT and NIT version", OFFSET(tables_version), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 31, ENC },
2381 { "omit_video_pes_length", "Omit the PES packet length for video packets",
2382 OFFSET(omit_video_pes_length), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
2383 { "pcr_period", "PCR retransmission time in milliseconds",
2384 OFFSET(pcr_period_ms), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC },
2385 { "pat_period", "PAT/PMT retransmission time limit in seconds",
2386 OFFSET(pat_period_us), AV_OPT_TYPE_DURATION, { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2387 { "sdt_period", "SDT retransmission time limit in seconds",
2388 OFFSET(sdt_period_us), AV_OPT_TYPE_DURATION, { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2389 { "nit_period", "NIT retransmission time limit in seconds",
2390 OFFSET(nit_period_us), AV_OPT_TYPE_DURATION, { .i64 = NIT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2391 { NULL },
2392 };
2393
2394 static const AVClass mpegts_muxer_class = {
2395 .class_name = "MPEGTS muxer",
2396 .item_name = av_default_item_name,
2397 .option = options,
2398 .version = LIBAVUTIL_VERSION_INT,
2399 };
2400
2401 const FFOutputFormat ff_mpegts_muxer = {
2402 .p.name = "mpegts",
2403 .p.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2404 .p.mime_type = "video/MP2T",
2405 .p.extensions = "ts,m2t,m2ts,mts",
2406 .priv_data_size = sizeof(MpegTSWrite),
2407 .p.audio_codec = AV_CODEC_ID_MP2,
2408 .p.video_codec = AV_CODEC_ID_MPEG2VIDEO,
2409 .init = mpegts_init,
2410 .write_packet = mpegts_write_packet,
2411 .write_trailer = mpegts_write_end,
2412 .deinit = mpegts_deinit,
2413 .check_bitstream = mpegts_check_bitstream,
2414 #if FF_API_ALLOW_FLUSH
2415 .p.flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2416 #else
2417 .p.flags = AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2418 #endif
2419 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
2420 .p.priv_class = &mpegts_muxer_class,
2421 };
2422