FFmpeg  4.4.6
mpegtsenc.c
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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/opt.h"
29 
31 #include "libavcodec/internal.h"
32 
33 #include "avformat.h"
34 #include "avio_internal.h"
35 #include "internal.h"
36 #include "mpegts.h"
37 
38 #define PCR_TIME_BASE 27000000
39 
40 /* write DVB SI sections */
41 
42 #define DVB_PRIVATE_NETWORK_START 0xff01
43 
44 /*********************************************/
45 /* mpegts section writer */
46 
47 typedef struct MpegTSSection {
48  int pid;
49  int cc;
51  void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
52  void *opaque;
54 
55 typedef struct MpegTSService {
56  MpegTSSection pmt; /* MPEG-2 PMT table context */
57  int sid; /* service ID */
58  uint8_t name[256];
60  int pcr_pid;
63 
64 // service_type values as defined in ETSI 300 468
65 enum {
74 };
75 typedef struct MpegTSWrite {
76  const AVClass *av_class;
77  MpegTSSection pat; /* MPEG-2 PAT table */
78  MpegTSSection sdt; /* MPEG-2 SDT table context */
81  int64_t sdt_period; /* SDT period in PCR time base */
82  int64_t pat_period; /* PAT/PMT period in PCR time base */
87  int mux_rate; ///< set to 1 when VBR
90 
95 
97  int start_pid;
98  int m2ts_mode;
103 
105 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
106 #define MPEGTS_FLAG_AAC_LATM 0x02
107 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
108 #define MPEGTS_FLAG_SYSTEM_B 0x08
109 #define MPEGTS_FLAG_DISCONT 0x10
110  int flags;
111  int copyts;
117 
119 } MpegTSWrite;
120 
121 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
122 #define DEFAULT_PES_HEADER_FREQ 16
123 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
124 
125 /* The section length is 12 bits. The first 2 are set to 0, the remaining
126  * 10 bits should not exceed 1021. */
127 #define SECTION_LENGTH 1020
128 
129 /* NOTE: 4 bytes must be left at the end for the crc32 */
131 {
132  unsigned int crc;
133  unsigned char packet[TS_PACKET_SIZE];
134  const unsigned char *buf_ptr;
135  unsigned char *q;
136  int first, b, len1, left;
137 
139  -1, buf, len - 4));
140 
141  buf[len - 4] = (crc >> 24) & 0xff;
142  buf[len - 3] = (crc >> 16) & 0xff;
143  buf[len - 2] = (crc >> 8) & 0xff;
144  buf[len - 1] = crc & 0xff;
145 
146  /* send each packet */
147  buf_ptr = buf;
148  while (len > 0) {
149  first = buf == buf_ptr;
150  q = packet;
151  *q++ = 0x47;
152  b = s->pid >> 8;
153  if (first)
154  b |= 0x40;
155  *q++ = b;
156  *q++ = s->pid;
157  s->cc = s->cc + 1 & 0xf;
158  *q++ = 0x10 | s->cc;
159  if (s->discontinuity) {
160  q[-1] |= 0x20;
161  *q++ = 1;
162  *q++ = 0x80;
163  s->discontinuity = 0;
164  }
165  if (first)
166  *q++ = 0; /* 0 offset */
167  len1 = TS_PACKET_SIZE - (q - packet);
168  if (len1 > len)
169  len1 = len;
170  memcpy(q, buf_ptr, len1);
171  q += len1;
172  /* add known padding data */
173  left = TS_PACKET_SIZE - (q - packet);
174  if (left > 0)
175  memset(q, 0xff, left);
176 
177  s->write_packet(s, packet);
178 
179  buf_ptr += len1;
180  len -= len1;
181  }
182 }
183 
184 static inline void put16(uint8_t **q_ptr, int val)
185 {
186  uint8_t *q;
187  q = *q_ptr;
188  *q++ = val >> 8;
189  *q++ = val;
190  *q_ptr = q;
191 }
192 
193 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
194  int version, int sec_num, int last_sec_num,
195  uint8_t *buf, int len)
196 {
197  uint8_t section[1024], *q;
198  unsigned int tot_len;
199  /* reserved_future_use field must be set to 1 for SDT */
200  unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
201 
202  tot_len = 3 + 5 + len + 4;
203  /* check if not too big */
204  if (tot_len > 1024)
205  return AVERROR_INVALIDDATA;
206 
207  q = section;
208  *q++ = tid;
209  put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
210  put16(&q, id);
211  *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
212  *q++ = sec_num;
213  *q++ = last_sec_num;
214  memcpy(q, buf, len);
215 
216  mpegts_write_section(s, section, tot_len);
217  return 0;
218 }
219 
220 /*********************************************/
221 /* mpegts writer */
222 
223 #define DEFAULT_PROVIDER_NAME "FFmpeg"
224 #define DEFAULT_SERVICE_NAME "Service"
225 
226 /* we retransmit the SI info at this rate */
227 #define SDT_RETRANS_TIME 500
228 #define PAT_RETRANS_TIME 100
229 #define PCR_RETRANS_TIME 20
230 
231 typedef struct MpegTSWriteStream {
232  int pid; /* stream associated pid */
233  int cc;
236  int first_timestamp_checked; ///< first pts/dts check needed
244 
245  int64_t pcr_period; /* PCR period in PCR time base */
247 
248  /* For Opus */
251 
254 
256 {
257  MpegTSWrite *ts = s->priv_data;
258  MpegTSService *service;
260  int i;
261 
262  q = data;
263  for (i = 0; i < ts->nb_services; i++) {
264  service = ts->services[i];
265  put16(&q, service->sid);
266  put16(&q, 0xe000 | service->pmt.pid);
267  }
269  data, q - data);
270 }
271 
272 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
273 {
274  memcpy(*q_ptr, buf, len);
275  *q_ptr += len;
276 }
277 
278 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
279 {
280  uint8_t *q = *q_ptr;
282  *q++ = 4;
283  *q++ = tag;
284  *q++ = tag >> 8;
285  *q++ = tag >> 16;
286  *q++ = tag >> 24;
287  *q_ptr = q;
288 }
289 
291 {
292  MpegTSWrite *ts = s->priv_data;
293  MpegTSWriteStream *ts_st = st->priv_data;
294  int stream_type;
295 
296  switch (st->codecpar->codec_id) {
299  stream_type = STREAM_TYPE_VIDEO_MPEG2;
300  break;
301  case AV_CODEC_ID_MPEG4:
302  stream_type = STREAM_TYPE_VIDEO_MPEG4;
303  break;
304  case AV_CODEC_ID_H264:
305  stream_type = STREAM_TYPE_VIDEO_H264;
306  break;
307  case AV_CODEC_ID_HEVC:
308  stream_type = STREAM_TYPE_VIDEO_HEVC;
309  break;
310  case AV_CODEC_ID_CAVS:
311  stream_type = STREAM_TYPE_VIDEO_CAVS;
312  break;
313  case AV_CODEC_ID_DIRAC:
314  stream_type = STREAM_TYPE_VIDEO_DIRAC;
315  break;
316  case AV_CODEC_ID_VC1:
317  stream_type = STREAM_TYPE_VIDEO_VC1;
318  break;
319  case AV_CODEC_ID_MP2:
320  case AV_CODEC_ID_MP3:
321  if ( st->codecpar->sample_rate > 0
322  && st->codecpar->sample_rate < 32000) {
323  stream_type = STREAM_TYPE_AUDIO_MPEG2;
324  } else {
325  stream_type = STREAM_TYPE_AUDIO_MPEG1;
326  }
327  break;
328  case AV_CODEC_ID_AAC:
329  stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
332  break;
334  stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
335  break;
336  case AV_CODEC_ID_AC3:
337  stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
340  break;
341  case AV_CODEC_ID_EAC3:
342  stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
345  break;
346  case AV_CODEC_ID_DTS:
347  stream_type = STREAM_TYPE_AUDIO_DTS;
348  break;
349  case AV_CODEC_ID_TRUEHD:
350  stream_type = STREAM_TYPE_AUDIO_TRUEHD;
351  break;
352  case AV_CODEC_ID_OPUS:
353  stream_type = STREAM_TYPE_PRIVATE_DATA;
354  break;
356  stream_type = STREAM_TYPE_METADATA;
357  break;
360  stream_type = STREAM_TYPE_PRIVATE_DATA;
361  break;
363  if (st->codecpar->profile == FF_PROFILE_KLVA_SYNC) {
364  stream_type = STREAM_TYPE_METADATA;
365  } else {
366  stream_type = STREAM_TYPE_PRIVATE_DATA;
367  }
368  break;
369  default:
371  "Stream %d, codec %s, is muxed as a private data stream "
372  "and may not be recognized upon reading.\n", st->index,
374  stream_type = STREAM_TYPE_PRIVATE_DATA;
375  break;
376  }
377 
378  return stream_type;
379 }
380 
382 {
383  int stream_type;
384  MpegTSWriteStream *ts_st = st->priv_data;
385 
386  switch (st->codecpar->codec_id) {
388  stream_type = STREAM_TYPE_VIDEO_MPEG2;
389  break;
390  case AV_CODEC_ID_H264:
391  stream_type = STREAM_TYPE_VIDEO_H264;
392  break;
393  case AV_CODEC_ID_VC1:
394  stream_type = STREAM_TYPE_VIDEO_VC1;
395  break;
396  case AV_CODEC_ID_HEVC:
397  stream_type = STREAM_TYPE_VIDEO_HEVC;
398  break;
400  stream_type = 0x80;
401  break;
402  case AV_CODEC_ID_AC3:
403  stream_type = 0x81;
404  break;
405  case AV_CODEC_ID_DTS:
406  stream_type = (st->codecpar->channels > 6) ? 0x85 : 0x82;
407  break;
408  case AV_CODEC_ID_TRUEHD:
409  stream_type = 0x83;
410  break;
411  case AV_CODEC_ID_EAC3:
412  stream_type = 0x84;
413  break;
415  stream_type = 0x90;
416  break;
418  stream_type = 0x92;
419  break;
420  default:
422  "Stream %d, codec %s, is muxed as a private data stream "
423  "and may not be recognized upon reading.\n", st->index,
425  stream_type = STREAM_TYPE_PRIVATE_DATA;
426  break;
427  }
428 
429  return stream_type;
430 }
431 
433 {
434  MpegTSWrite *ts = s->priv_data;
435  uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
436  int val, stream_type, i, err = 0;
437 
438  q = data;
439  put16(&q, 0xe000 | service->pcr_pid);
440 
441  program_info_length_ptr = q;
442  q += 2; /* patched after */
443 
444  /* put program info here */
445  if (ts->m2ts_mode) {
446  put_registration_descriptor(&q, MKTAG('H', 'D', 'M', 'V'));
447  *q++ = 0x88; // descriptor_tag - hdmv_copy_control_descriptor
448  *q++ = 0x04; // descriptor_length
449  put16(&q, 0x0fff); // CA_System_ID
450  *q++ = 0xfc; // private_data_byte
451  *q++ = 0xfc; // private_data_byte
452  }
453 
454  val = 0xf000 | (q - program_info_length_ptr - 2);
455  program_info_length_ptr[0] = val >> 8;
456  program_info_length_ptr[1] = val;
457 
458  for (i = 0; i < s->nb_streams; i++) {
459  AVStream *st = s->streams[i];
460  MpegTSWriteStream *ts_st = st->priv_data;
461  AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
462  enum AVCodecID codec_id = st->codecpar->codec_id;
463 
464  if (s->nb_programs) {
465  int k, found = 0;
466  AVProgram *program = service->program;
467 
468  for (k = 0; k < program->nb_stream_indexes; k++)
469  if (program->stream_index[k] == i) {
470  found = 1;
471  break;
472  }
473 
474  if (!found)
475  continue;
476  }
477 
478  if (q - data > SECTION_LENGTH - 32) {
479  err = 1;
480  break;
481  }
482 
483  stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
484 
485  *q++ = stream_type;
486  put16(&q, 0xe000 | ts_st->pid);
487  desc_length_ptr = q;
488  q += 2; /* patched after */
489 
490  /* write optional descriptors here */
491  switch (st->codecpar->codec_type) {
492  case AVMEDIA_TYPE_AUDIO:
493  if (codec_id == AV_CODEC_ID_AC3)
494  put_registration_descriptor(&q, MKTAG('A', 'C', '-', '3'));
495  if (codec_id == AV_CODEC_ID_EAC3)
496  put_registration_descriptor(&q, MKTAG('E', 'A', 'C', '3'));
497  if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
498  if (codec_id == AV_CODEC_ID_AC3) {
499  DVBAC3Descriptor *dvb_ac3_desc = ts_st->dvb_ac3_desc;
500 
501  *q++=0x6a; // AC3 descriptor see A038 DVB SI
502  if (dvb_ac3_desc) {
503  int len = 1 +
504  !!(dvb_ac3_desc->component_type_flag) +
505  !!(dvb_ac3_desc->bsid_flag) +
506  !!(dvb_ac3_desc->mainid_flag) +
507  !!(dvb_ac3_desc->asvc_flag);
508 
509  *q++ = len;
510  *q++ = dvb_ac3_desc->component_type_flag << 7 | dvb_ac3_desc->bsid_flag << 6 |
511  dvb_ac3_desc->mainid_flag << 5 | dvb_ac3_desc->asvc_flag << 4;
512 
513  if (dvb_ac3_desc->component_type_flag) *q++ = dvb_ac3_desc->component_type;
514  if (dvb_ac3_desc->bsid_flag) *q++ = dvb_ac3_desc->bsid;
515  if (dvb_ac3_desc->mainid_flag) *q++ = dvb_ac3_desc->mainid;
516  if (dvb_ac3_desc->asvc_flag) *q++ = dvb_ac3_desc->asvc;
517  } else {
518  *q++=1; // 1 byte, all flags sets to 0
519  *q++=0; // omit all fields...
520  }
521  } else if (codec_id == AV_CODEC_ID_EAC3) {
522  *q++=0x7a; // EAC3 descriptor see A038 DVB SI
523  *q++=1; // 1 byte, all flags sets to 0
524  *q++=0; // omit all fields...
525  }
526  }
528  put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
529  if (codec_id == AV_CODEC_ID_OPUS) {
530  /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
531  if (q - data > SECTION_LENGTH - 6 - 4) {
532  err = 1;
533  break;
534  }
535 
536  put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
537 
538  *q++ = 0x7f; /* DVB extension descriptor */
539  *q++ = 2;
540  *q++ = 0x80;
541 
542  if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
543  if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) {
544  /* RTP mapping family */
545  *q++ = st->codecpar->channels;
546  } else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
547  st->codecpar->extradata_size >= 21 + st->codecpar->channels) {
548  static const uint8_t coupled_stream_counts[9] = {
549  1, 0, 1, 1, 2, 2, 2, 3, 3
550  };
551  static const uint8_t channel_map_a[8][8] = {
552  {0},
553  {0, 1},
554  {0, 2, 1},
555  {0, 1, 2, 3},
556  {0, 4, 1, 2, 3},
557  {0, 4, 1, 2, 3, 5},
558  {0, 4, 1, 2, 3, 5, 6},
559  {0, 6, 1, 2, 3, 4, 5, 7},
560  };
561  static const uint8_t channel_map_b[8][8] = {
562  {0},
563  {0, 1},
564  {0, 1, 2},
565  {0, 1, 2, 3},
566  {0, 1, 2, 3, 4},
567  {0, 1, 2, 3, 4, 5},
568  {0, 1, 2, 3, 4, 5, 6},
569  {0, 1, 2, 3, 4, 5, 6, 7},
570  };
571  /* Vorbis mapping family */
572 
573  if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
574  st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
575  memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
576  *q++ = st->codecpar->channels;
577  } else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
578  st->codecpar->extradata[20] == 0 &&
579  memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
580  *q++ = st->codecpar->channels | 0x80;
581  } else {
582  /* Unsupported, could write an extended descriptor here */
583  av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
584  *q++ = 0xff;
585  }
586  } else {
587  /* Unsupported */
588  av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
589  *q++ = 0xff;
590  }
591  } else if (st->codecpar->channels <= 2) {
592  /* Assume RTP mapping family */
593  *q++ = st->codecpar->channels;
594  } else {
595  /* Unsupported */
596  av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
597  *q++ = 0xff;
598  }
599  }
600 
601  if (lang) {
602  char *p;
603  char *next = lang->value;
604  uint8_t *len_ptr;
605 
607  len_ptr = q++;
608  *len_ptr = 0;
609 
610  for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
611  if (q - data > SECTION_LENGTH - 4) {
612  err = 1;
613  break;
614  }
615  next = strchr(p, ',');
616  if (strlen(p) != 3 && (!next || next != p + 3))
617  continue; /* not a 3-letter code */
618 
619  *q++ = *p++;
620  *q++ = *p++;
621  *q++ = *p++;
622 
624  *q++ = 0x01;
626  *q++ = 0x02;
628  *q++ = 0x03;
629  else
630  *q++ = 0; /* undefined type */
631 
632  *len_ptr += 4;
633  }
634 
635  if (*len_ptr == 0)
636  q -= 2; /* no language codes were written */
637  }
638  break;
640  {
641  const char default_language[] = "und";
642  const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
643 
645  uint8_t *len_ptr;
646  int extradata_copied = 0;
647 
648  *q++ = 0x59; /* subtitling_descriptor */
649  len_ptr = q++;
650 
651  while (strlen(language) >= 3) {
652  if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
653  err = 1;
654  break;
655  }
656  *q++ = *language++;
657  *q++ = *language++;
658  *q++ = *language++;
659  /* Skip comma */
660  if (*language != '\0')
661  language++;
662 
663  if (st->codecpar->extradata_size - extradata_copied >= 5) {
664  *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
665  memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
666  extradata_copied += 5;
667  q += 4;
668  } else {
669  /* subtitling_type:
670  * 0x10 - normal with no monitor aspect ratio criticality
671  * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
672  *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
673  if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
674  /* support of old 4-byte extradata format */
675  memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
676  extradata_copied += 4;
677  q += 4;
678  } else {
679  put16(&q, 1); /* composition_page_id */
680  put16(&q, 1); /* ancillary_page_id */
681  }
682  }
683  }
684 
685  *len_ptr = q - len_ptr - 1;
686  } else if (codec_id == AV_CODEC_ID_DVB_TELETEXT) {
687  uint8_t *len_ptr = NULL;
688  int extradata_copied = 0;
689 
690  /* The descriptor tag. teletext_descriptor */
691  *q++ = 0x56;
692  len_ptr = q++;
693 
694  while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
695  *q++ = *language++;
696  *q++ = *language++;
697  *q++ = *language++;
698  /* Skip comma */
699  if (*language != '\0')
700  language++;
701 
702  if (st->codecpar->extradata_size - 1 > extradata_copied) {
703  memcpy(q, st->codecpar->extradata + extradata_copied, 2);
704  extradata_copied += 2;
705  q += 2;
706  } else {
707  /* The Teletext descriptor:
708  * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
709  * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
710  * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
711  *q++ = 0x08;
712  *q++ = 0x00;
713  }
714  }
715 
716  *len_ptr = q - len_ptr - 1;
717  }
718  }
719  break;
720  case AVMEDIA_TYPE_VIDEO:
721  if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
722  put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
723  } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
724  put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
725  } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
726  put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
727  }
728  break;
729  case AVMEDIA_TYPE_DATA:
731  put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
732  } else if (codec_id == AV_CODEC_ID_TIMED_ID3) {
733  const char *tag = "ID3 ";
734  *q++ = METADATA_DESCRIPTOR;
735  *q++ = 13;
736  put16(&q, 0xffff); /* metadata application format */
737  putbuf(&q, tag, strlen(tag));
738  *q++ = 0xff; /* metadata format */
739  putbuf(&q, tag, strlen(tag));
740  *q++ = 0; /* metadata service ID */
741  *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
742  }
743  break;
744  }
745 
746  val = 0xf000 | (q - desc_length_ptr - 2);
747  desc_length_ptr[0] = val >> 8;
748  desc_length_ptr[1] = val;
749  }
750 
751  if (err)
753  "The PMT section cannot fit stream %d and all following streams.\n"
754  "Try reducing the number of languages in the audio streams "
755  "or the total number of streams.\n", i);
756 
757  mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
758  data, q - data);
759  return 0;
760 }
761 
763 {
764  MpegTSWrite *ts = s->priv_data;
765  MpegTSService *service;
766  uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
767  int i, running_status, free_ca_mode, val;
768 
769  q = data;
770  put16(&q, ts->original_network_id);
771  *q++ = 0xff;
772  for (i = 0; i < ts->nb_services; i++) {
773  service = ts->services[i];
774  put16(&q, service->sid);
775  *q++ = 0xfc | 0x00; /* currently no EIT info */
776  desc_list_len_ptr = q;
777  q += 2;
778  running_status = 4; /* running */
779  free_ca_mode = 0;
780 
781  /* write only one descriptor for the service name and provider */
782  *q++ = 0x48;
783  desc_len_ptr = q;
784  q++;
785  *q++ = ts->service_type;
786  putbuf(&q, service->provider_name, service->provider_name[0] + 1);
787  putbuf(&q, service->name, service->name[0] + 1);
788  desc_len_ptr[0] = q - desc_len_ptr - 1;
789 
790  /* fill descriptor length */
791  val = (running_status << 13) | (free_ca_mode << 12) |
792  (q - desc_list_len_ptr - 2);
793  desc_list_len_ptr[0] = val >> 8;
794  desc_list_len_ptr[1] = val;
795  }
797  data, q - data);
798 }
799 
800 /* This stores a string in buf with the correct encoding and also sets the
801  * first byte as the length. !str is accepted for an empty string.
802  * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
803  * then we keep it as is, otherwise we signal UTF-8 encoding. */
804 static int encode_str8(uint8_t *buf, const char *str)
805 {
806  size_t str_len;
807  if (!str)
808  str = "";
809  str_len = strlen(str);
810  if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
811  const uint8_t *q = str;
812  int has_multibyte = 0;
813  while (*q) {
814  uint32_t code;
815  GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
816  has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
817  }
818  if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
819  if (str_len > 254)
820  return AVERROR(EINVAL);
821  buf[0] = str_len + 1;
822  buf[1] = 0x15;
823  memcpy(&buf[2], str, str_len);
824  return 0;
825  }
826  }
827 invalid:
828  /* Otherwise let's just encode the string as is! */
829  if (str_len > 255)
830  return AVERROR(EINVAL);
831  buf[0] = str_len;
832  memcpy(&buf[1], str, str_len);
833  return 0;
834 }
835 
836 static int64_t get_pcr(const MpegTSWrite *ts)
837 {
838  return av_rescale(ts->total_size + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
839  ts->first_pcr;
840 }
841 
842 static void write_packet(AVFormatContext *s, const uint8_t *packet)
843 {
844  MpegTSWrite *ts = s->priv_data;
845  if (ts->m2ts_mode) {
846  int64_t pcr = get_pcr(s->priv_data);
847  uint32_t tp_extra_header = pcr % 0x3fffffff;
848  tp_extra_header = AV_RB32(&tp_extra_header);
849  avio_write(s->pb, (unsigned char *) &tp_extra_header,
850  sizeof(tp_extra_header));
851  }
852  avio_write(s->pb, packet, TS_PACKET_SIZE);
853  ts->total_size += TS_PACKET_SIZE;
854 }
855 
856 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
857 {
858  AVFormatContext *ctx = s->opaque;
859  write_packet(ctx, packet);
860 }
861 
863  const AVDictionary *metadata,
864  AVProgram *program)
865 {
866  MpegTSWrite *ts = s->priv_data;
867  MpegTSService *service;
868  AVDictionaryEntry *title, *provider;
869  char default_service_name[32];
870  const char *service_name;
871  const char *provider_name;
872 
873  title = av_dict_get(metadata, "service_name", NULL, 0);
874  if (!title)
875  title = av_dict_get(metadata, "title", NULL, 0);
876  snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
877  service_name = title ? title->value : default_service_name;
878  provider = av_dict_get(metadata, "service_provider", NULL, 0);
879  provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
880 
881  service = av_mallocz(sizeof(MpegTSService));
882  if (!service)
883  return NULL;
884  service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
885  service->sid = sid;
886  service->pcr_pid = 0x1fff;
887  if (encode_str8(service->provider_name, provider_name) < 0 ||
888  encode_str8(service->name, service_name) < 0) {
889  av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
890  goto fail;
891  }
892  if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
893  goto fail;
894 
896  service->pmt.opaque = s;
897  service->pmt.cc = 15;
898  service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
899  service->program = program;
900 
901  return service;
902 fail:
903  av_free(service);
904  return NULL;
905 }
906 
908 {
909  MpegTSWrite *ts = s->priv_data;
910  MpegTSWriteStream *ts_st = pcr_st->priv_data;
911 
912  if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
913  int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
914  ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
915  } else {
916  /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
917  int64_t frame_period = 0;
918  if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
920  if (!frame_size) {
921  av_log(s, AV_LOG_WARNING, "frame size not set\n");
922  frame_size = 512;
923  }
925  } else if (pcr_st->avg_frame_rate.num) {
926  frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
927  }
928  if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
929  ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
930  else
931  ts_st->pcr_period = 1;
932  }
933 
934  // output a PCR as soon as possible
935  ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
936 }
937 
939 {
940  MpegTSWrite *ts = s->priv_data;
941 
942  for (int i = 0; i < ts->nb_services; i++) {
943  MpegTSService *service = ts->services[i];
944  AVStream *pcr_st = NULL;
945  AVProgram *program = service->program;
946  int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
947 
948  for (int j = 0; j < nb_streams; j++) {
949  AVStream *st = s->streams[program ? program->stream_index[j] : j];
950  if (!pcr_st ||
952  {
953  pcr_st = st;
954  }
955  }
956 
957  if (pcr_st) {
958  MpegTSWriteStream *ts_st = pcr_st->priv_data;
959  service->pcr_pid = ts_st->pid;
961  av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
962  service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
963  }
964  }
965 }
966 
968 {
969  MpegTSWrite *ts = s->priv_data;
970  int i, j;
971  int ret;
972 
973  if (ts->m2ts_mode == -1) {
974  if (av_match_ext(s->url, "m2ts")) {
975  ts->m2ts_mode = 1;
976  } else {
977  ts->m2ts_mode = 0;
978  }
979  }
980 
985 
986  if (ts->m2ts_mode) {
988  if (s->nb_programs > 1) {
989  av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
990  return AVERROR(EINVAL);
991  }
992  }
993 
994  if (s->max_delay < 0) /* Not set by the caller */
995  s->max_delay = 0;
996 
997  // round up to a whole number of TS packets
998  ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
999 
1000  if (!s->nb_programs) {
1001  /* allocate a single DVB service */
1002  if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
1003  return AVERROR(ENOMEM);
1004  } else {
1005  for (i = 0; i < s->nb_programs; i++) {
1006  AVProgram *program = s->programs[i];
1007  if (!mpegts_add_service(s, program->id, program->metadata, program))
1008  return AVERROR(ENOMEM);
1009  }
1010  }
1011 
1012  ts->pat.pid = PAT_PID;
1013  /* Initialize at 15 so that it wraps and is equal to 0 for the
1014  * first packet we write. */
1015  ts->pat.cc = 15;
1018  ts->pat.opaque = s;
1019 
1020  ts->sdt.pid = SDT_PID;
1021  ts->sdt.cc = 15;
1024  ts->sdt.opaque = s;
1025 
1026  ts->pkt = av_packet_alloc();
1027  if (!ts->pkt)
1028  return AVERROR(ENOMEM);
1029 
1030  /* assign pids to each stream */
1031  for (i = 0; i < s->nb_streams; i++) {
1032  AVStream *st = s->streams[i];
1033  MpegTSWriteStream *ts_st;
1034 
1035  ts_st = av_mallocz(sizeof(MpegTSWriteStream));
1036  if (!ts_st) {
1037  return AVERROR(ENOMEM);
1038  }
1039  st->priv_data = ts_st;
1040 
1041  avpriv_set_pts_info(st, 33, 1, 90000);
1042 
1043  ts_st->payload = av_mallocz(ts->pes_payload_size);
1044  if (!ts_st->payload) {
1045  return AVERROR(ENOMEM);
1046  }
1047 
1048  /* MPEG pid values < 16 are reserved. Applications which set st->id in
1049  * this range are assigned a calculated pid. */
1050  if (st->id < 16) {
1051  if (ts->m2ts_mode) {
1052  switch (st->codecpar->codec_type) {
1053  case AVMEDIA_TYPE_VIDEO:
1054  ts_st->pid = ts->m2ts_video_pid++;
1055  break;
1056  case AVMEDIA_TYPE_AUDIO:
1057  ts_st->pid = ts->m2ts_audio_pid++;
1058  break;
1059  case AVMEDIA_TYPE_SUBTITLE:
1060  switch (st->codecpar->codec_id) {
1062  ts_st->pid = ts->m2ts_pgssub_pid++;
1063  break;
1065  ts_st->pid = ts->m2ts_textsub_pid++;
1066  break;
1067  }
1068  break;
1069  }
1070  if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1071  ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1073  ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1074  ts_st->pid < 16) {
1075  av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1076  return AVERROR(EINVAL);
1077  }
1078  } else {
1079  ts_st->pid = ts->start_pid + i;
1080  }
1081  } else {
1082  ts_st->pid = st->id;
1083  }
1084  if (ts_st->pid >= 0x1FFF) {
1086  "Invalid stream id %d, must be less than 8191\n", st->id);
1087  return AVERROR(EINVAL);
1088  }
1089  for (j = 0; j < ts->nb_services; j++) {
1090  if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1092  "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1093  return AVERROR(EINVAL);
1094  }
1095  if (ts_st->pid == ts->services[j]->pmt.pid) {
1096  av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1097  return AVERROR(EINVAL);
1098  }
1099  }
1100  for (j = 0; j < i; j++) {
1101  MpegTSWriteStream *ts_st_prev = s->streams[j]->priv_data;
1102  if (ts_st_prev->pid == ts_st->pid) {
1103  av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1104  return AVERROR(EINVAL);
1105  }
1106  }
1107  ts_st->payload_pts = AV_NOPTS_VALUE;
1108  ts_st->payload_dts = AV_NOPTS_VALUE;
1109  ts_st->cc = 15;
1110  ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1111  if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1112  st->codecpar->extradata_size > 0) {
1113  AVStream *ast;
1114  ts_st->amux = avformat_alloc_context();
1115  if (!ts_st->amux) {
1116  return AVERROR(ENOMEM);
1117  }
1118  ts_st->amux->oformat =
1119  av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1120  NULL, NULL);
1121  if (!ts_st->amux->oformat) {
1122  return AVERROR(EINVAL);
1123  }
1124  if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1125  return AVERROR(ENOMEM);
1126  }
1127  ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1128  if (ret != 0)
1129  return ret;
1130  ast->time_base = st->time_base;
1131  ret = avformat_write_header(ts_st->amux, NULL);
1132  if (ret < 0)
1133  return ret;
1134  }
1135  if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1137  }
1138  }
1139 
1140  if (ts->copyts < 1)
1141  ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1142 
1144 
1149 
1150  if (ts->mux_rate == 1)
1151  av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1152  else
1153  av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1155  "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms\n",
1156  av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1157  av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1158 
1159  return 0;
1160 }
1161 
1162 /* send SDT, PAT and PMT tables regularly */
1163 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int64_t pcr)
1164 {
1165  MpegTSWrite *ts = s->priv_data;
1166  int i;
1167 
1168  if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1169  (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1170  force_sdt
1171  ) {
1172  if (pcr != AV_NOPTS_VALUE)
1173  ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1175  }
1176  if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1177  (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1178  force_pat) {
1179  if (pcr != AV_NOPTS_VALUE)
1180  ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1182  for (i = 0; i < ts->nb_services; i++)
1183  mpegts_write_pmt(s, ts->services[i]);
1184  }
1185 }
1186 
1187 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1188 {
1189  int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1190 
1191  *buf++ = pcr_high >> 25;
1192  *buf++ = pcr_high >> 17;
1193  *buf++ = pcr_high >> 9;
1194  *buf++ = pcr_high >> 1;
1195  *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1196  *buf++ = pcr_low;
1197 
1198  return 6;
1199 }
1200 
1201 /* Write a single null transport stream packet */
1203 {
1204  uint8_t *q;
1205  uint8_t buf[TS_PACKET_SIZE];
1206 
1207  q = buf;
1208  *q++ = 0x47;
1209  *q++ = 0x00 | 0x1f;
1210  *q++ = 0xff;
1211  *q++ = 0x10;
1212  memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1213  write_packet(s, buf);
1214 }
1215 
1216 /* Write a single transport stream packet with a PCR and no payload */
1218 {
1219  MpegTSWrite *ts = s->priv_data;
1220  MpegTSWriteStream *ts_st = st->priv_data;
1221  uint8_t *q;
1222  uint8_t buf[TS_PACKET_SIZE];
1223 
1224  q = buf;
1225  *q++ = 0x47;
1226  *q++ = ts_st->pid >> 8;
1227  *q++ = ts_st->pid;
1228  *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1229  /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1230  *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1231  *q++ = 0x10; /* Adaptation flags: PCR present */
1232  if (ts_st->discontinuity) {
1233  q[-1] |= 0x80;
1234  ts_st->discontinuity = 0;
1235  }
1236 
1237  /* PCR coded into 6 bytes */
1238  q += write_pcr_bits(q, get_pcr(ts));
1239 
1240  /* stuffing bytes */
1241  memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1242  write_packet(s, buf);
1243 }
1244 
1245 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1246 {
1247  int val;
1248 
1249  val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1250  *q++ = val;
1251  val = (((pts >> 15) & 0x7fff) << 1) | 1;
1252  *q++ = val >> 8;
1253  *q++ = val;
1254  val = (((pts) & 0x7fff) << 1) | 1;
1255  *q++ = val >> 8;
1256  *q++ = val;
1257 }
1258 
1259 /* Set an adaptation field flag in an MPEG-TS packet*/
1260 static void set_af_flag(uint8_t *pkt, int flag)
1261 {
1262  // expect at least one flag to set
1263  av_assert0(flag);
1264 
1265  if ((pkt[3] & 0x20) == 0) {
1266  // no AF yet, set adaptation field flag
1267  pkt[3] |= 0x20;
1268  // 1 byte length, no flags
1269  pkt[4] = 1;
1270  pkt[5] = 0;
1271  }
1272  pkt[5] |= flag;
1273 }
1274 
1275 /* Extend the adaptation field by size bytes */
1276 static void extend_af(uint8_t *pkt, int size)
1277 {
1278  // expect already existing adaptation field
1279  av_assert0(pkt[3] & 0x20);
1280  pkt[4] += size;
1281 }
1282 
1283 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1285 {
1286  if (pkt[3] & 0x20)
1287  return pkt + 5 + pkt[4];
1288  else
1289  return pkt + 4;
1290 }
1291 
1292 /* Add a PES header to the front of the payload, and segment into an integer
1293  * number of TS packets. The final TS packet is padded using an oversized
1294  * adaptation header to exactly fill the last TS packet.
1295  * NOTE: 'payload' contains a complete PES payload. */
1297  const uint8_t *payload, int payload_size,
1298  int64_t pts, int64_t dts, int key, int stream_id)
1299 {
1300  MpegTSWriteStream *ts_st = st->priv_data;
1301  MpegTSWrite *ts = s->priv_data;
1302  uint8_t buf[TS_PACKET_SIZE];
1303  uint8_t *q;
1304  int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1305  int afc_len, stuffing_len;
1306  int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1307  int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1308  int force_sdt = 0;
1309 
1310  av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1312  force_pat = 1;
1313  }
1314 
1315  if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1316  force_pat = 1;
1317  force_sdt = 1;
1319  }
1320 
1321  is_start = 1;
1322  while (payload_size > 0) {
1323  int64_t pcr = AV_NOPTS_VALUE;
1324  if (ts->mux_rate > 1)
1325  pcr = get_pcr(ts);
1326  else if (dts != AV_NOPTS_VALUE)
1327  pcr = (dts - delay) * 300;
1328 
1329  retransmit_si_info(s, force_pat, force_sdt, pcr);
1330  force_pat = 0;
1331  force_sdt = 0;
1332 
1333  write_pcr = 0;
1334  if (ts->mux_rate > 1) {
1335  /* Send PCR packets for all PCR streams if needed */
1336  pcr = get_pcr(ts);
1337  if (pcr >= ts->next_pcr) {
1338  int64_t next_pcr = INT64_MAX;
1339  for (int i = 0; i < s->nb_streams; i++) {
1340  /* Make the current stream the last, because for that we
1341  * can insert the pcr into the payload later */
1342  int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1343  AVStream *st2 = s->streams[st2_index];
1344  MpegTSWriteStream *ts_st2 = st2->priv_data;
1345  if (ts_st2->pcr_period) {
1346  if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1347  ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1348  if (st2 != st) {
1349  mpegts_insert_pcr_only(s, st2);
1350  pcr = get_pcr(ts);
1351  } else {
1352  write_pcr = 1;
1353  }
1354  }
1355  next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1356  }
1357  }
1358  ts->next_pcr = next_pcr;
1359  }
1360  if (dts != AV_NOPTS_VALUE && (dts - pcr / 300) > delay) {
1361  /* pcr insert gets priority over null packet insert */
1362  if (write_pcr)
1364  else
1366  /* recalculate write_pcr and possibly retransmit si_info */
1367  continue;
1368  }
1369  } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1370  if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1371  ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1372  write_pcr = 1;
1373  }
1374  }
1375 
1376  /* prepare packet header */
1377  q = buf;
1378  *q++ = 0x47;
1379  val = ts_st->pid >> 8;
1380  if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1381  val |= 0x20;
1382  if (is_start)
1383  val |= 0x40;
1384  *q++ = val;
1385  *q++ = ts_st->pid;
1386  ts_st->cc = ts_st->cc + 1 & 0xf;
1387  *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1388  if (ts_st->discontinuity) {
1389  set_af_flag(buf, 0x80);
1390  q = get_ts_payload_start(buf);
1391  ts_st->discontinuity = 0;
1392  }
1393  if (key && is_start && pts != AV_NOPTS_VALUE) {
1394  // set Random Access for key frames
1395  if (ts_st->pcr_period)
1396  write_pcr = 1;
1397  set_af_flag(buf, 0x40);
1398  q = get_ts_payload_start(buf);
1399  }
1400  if (write_pcr) {
1401  set_af_flag(buf, 0x10);
1402  q = get_ts_payload_start(buf);
1403  // add 11, pcr references the last byte of program clock reference base
1404  if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1405  av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1406  extend_af(buf, write_pcr_bits(q, pcr));
1407  q = get_ts_payload_start(buf);
1408  }
1409  if (is_start) {
1410  int pes_extension = 0;
1411  int pes_header_stuffing_bytes = 0;
1412  /* write PES header */
1413  *q++ = 0x00;
1414  *q++ = 0x00;
1415  *q++ = 0x01;
1416  is_dvb_subtitle = 0;
1417  is_dvb_teletext = 0;
1418  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1419  if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1421  else
1422  *q++ = STREAM_ID_VIDEO_STREAM_0;
1423  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1424  (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1425  st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1426  st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1427  *q++ = STREAM_ID_AUDIO_STREAM_0;
1428  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1429  st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1430  ts->m2ts_mode) {
1432  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1435  } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1436  *q++ = stream_id != -1 ? stream_id : STREAM_ID_METADATA_STREAM;
1437 
1438  if (stream_id == STREAM_ID_PRIVATE_STREAM_1) /* asynchronous KLV */
1439  pts = dts = AV_NOPTS_VALUE;
1440  } else {
1444  is_dvb_subtitle = 1;
1445  } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1446  is_dvb_teletext = 1;
1447  }
1448  }
1449  }
1450  header_len = 0;
1451  flags = 0;
1452  if (pts != AV_NOPTS_VALUE) {
1453  header_len += 5;
1454  flags |= 0x80;
1455  }
1456  if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1457  header_len += 5;
1458  flags |= 0x40;
1459  }
1460  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1462  /* set PES_extension_flag */
1463  pes_extension = 1;
1464  flags |= 0x01;
1465 
1466  /* One byte for PES2 extension flag +
1467  * one byte for extension length +
1468  * one byte for extension id */
1469  header_len += 3;
1470  }
1471  /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1472  * otherwise it will not play sound on blu-ray
1473  */
1474  if (ts->m2ts_mode &&
1476  st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1477  /* set PES_extension_flag */
1478  pes_extension = 1;
1479  flags |= 0x01;
1480  header_len += 3;
1481  }
1482  if (is_dvb_teletext) {
1483  pes_header_stuffing_bytes = 0x24 - header_len;
1484  header_len = 0x24;
1485  }
1486  len = payload_size + header_len + 3;
1487  /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1488  if (is_dvb_subtitle) {
1489  len += 3;
1490  payload_size++;
1491  }
1492  if (len > 0xffff)
1493  len = 0;
1495  len = 0;
1496  }
1497  *q++ = len >> 8;
1498  *q++ = len;
1499  val = 0x80;
1500  /* data alignment indicator is required for subtitle and data streams */
1502  val |= 0x04;
1503  *q++ = val;
1504  *q++ = flags;
1505  *q++ = header_len;
1506  if (pts != AV_NOPTS_VALUE) {
1507  write_pts(q, flags >> 6, pts);
1508  q += 5;
1509  }
1510  if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1511  write_pts(q, 1, dts);
1512  q += 5;
1513  }
1514  if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1515  flags = 0x01; /* set PES_extension_flag_2 */
1516  *q++ = flags;
1517  *q++ = 0x80 | 0x01; /* marker bit + extension length */
1518  /* Set the stream ID extension flag bit to 0 and
1519  * write the extended stream ID. */
1520  *q++ = 0x00 | 0x60;
1521  }
1522  /* For Blu-ray AC3 Audio Setting extended flags */
1523  if (ts->m2ts_mode &&
1524  pes_extension &&
1525  st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1526  flags = 0x01; /* set PES_extension_flag_2 */
1527  *q++ = flags;
1528  *q++ = 0x80 | 0x01; /* marker bit + extension length */
1529  *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1530  }
1531 
1532 
1533  if (is_dvb_subtitle) {
1534  /* First two fields of DVB subtitles PES data:
1535  * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1536  * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1537  *q++ = 0x20;
1538  *q++ = 0x00;
1539  }
1540  if (is_dvb_teletext) {
1541  memset(q, 0xff, pes_header_stuffing_bytes);
1542  q += pes_header_stuffing_bytes;
1543  }
1544  is_start = 0;
1545  }
1546  /* header size */
1547  header_len = q - buf;
1548  /* data len */
1549  len = TS_PACKET_SIZE - header_len;
1550  if (len > payload_size)
1551  len = payload_size;
1552  stuffing_len = TS_PACKET_SIZE - header_len - len;
1553  if (stuffing_len > 0) {
1554  /* add stuffing with AFC */
1555  if (buf[3] & 0x20) {
1556  /* stuffing already present: increase its size */
1557  afc_len = buf[4] + 1;
1558  memmove(buf + 4 + afc_len + stuffing_len,
1559  buf + 4 + afc_len,
1560  header_len - (4 + afc_len));
1561  buf[4] += stuffing_len;
1562  memset(buf + 4 + afc_len, 0xff, stuffing_len);
1563  } else {
1564  /* add stuffing */
1565  memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1566  buf[3] |= 0x20;
1567  buf[4] = stuffing_len - 1;
1568  if (stuffing_len >= 2) {
1569  buf[5] = 0x00;
1570  memset(buf + 6, 0xff, stuffing_len - 2);
1571  }
1572  }
1573  }
1574 
1575  if (is_dvb_subtitle && payload_size == len) {
1576  memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1577  buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1578  } else {
1579  memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1580  }
1581 
1582  payload += len;
1583  payload_size -= len;
1584  write_packet(s, buf);
1585  }
1586  ts_st->prev_payload_key = key;
1587 }
1588 
1590 {
1591  if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1592  if (!st->nb_frames) {
1593  av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1594  "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1595  "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1596  return AVERROR_INVALIDDATA;
1597  }
1598  av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1599  if (pkt->size)
1600  av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1601  av_log(s, AV_LOG_WARNING, "\n");
1602  }
1603  return 0;
1604 }
1605 
1607 {
1608  if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1609  if (!st->nb_frames) {
1610  av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1611  return AVERROR_PATCHWELCOME;
1612  }
1613  av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1614  if (pkt->size)
1615  av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1616  av_log(s, AV_LOG_WARNING, "\n");
1617  }
1618  return 0;
1619 }
1620 
1621 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1622  * Released under the LGPL v2.1+, written by
1623  * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1624  */
1626 {
1627  static const int durations[32] = {
1628  480, 960, 1920, 2880, /* Silk NB */
1629  480, 960, 1920, 2880, /* Silk MB */
1630  480, 960, 1920, 2880, /* Silk WB */
1631  480, 960, /* Hybrid SWB */
1632  480, 960, /* Hybrid FB */
1633  120, 240, 480, 960, /* CELT NB */
1634  120, 240, 480, 960, /* CELT NB */
1635  120, 240, 480, 960, /* CELT NB */
1636  120, 240, 480, 960, /* CELT NB */
1637  };
1638  int toc, frame_duration, nframes, duration;
1639 
1640  if (pkt->size < 1)
1641  return 0;
1642 
1643  toc = pkt->data[0];
1644 
1645  frame_duration = durations[toc >> 3];
1646  switch (toc & 3) {
1647  case 0:
1648  nframes = 1;
1649  break;
1650  case 1:
1651  nframes = 2;
1652  break;
1653  case 2:
1654  nframes = 2;
1655  break;
1656  case 3:
1657  if (pkt->size < 2)
1658  return 0;
1659  nframes = pkt->data[1] & 63;
1660  break;
1661  }
1662 
1663  duration = nframes * frame_duration;
1664  if (duration > 5760) {
1666  "Opus packet duration > 120 ms, invalid");
1667  return 0;
1668  }
1669 
1670  return duration;
1671 }
1672 
1674 {
1675  AVStream *st = s->streams[pkt->stream_index];
1676  int size = pkt->size;
1677  uint8_t *buf = pkt->data;
1678  uint8_t *data = NULL;
1679  MpegTSWrite *ts = s->priv_data;
1680  MpegTSWriteStream *ts_st = st->priv_data;
1681  const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1682  const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1683  int64_t dts = pkt->dts, pts = pkt->pts;
1684  int opus_samples = 0;
1685  buffer_size_t side_data_size;
1686  uint8_t *side_data = NULL;
1687  int stream_id = -1;
1688 
1689  side_data = av_packet_get_side_data(pkt,
1691  &side_data_size);
1692  if (side_data)
1693  stream_id = side_data[0];
1694 
1695  if (ts->copyts < 1) {
1696  if (!ts->first_dts_checked && dts != AV_NOPTS_VALUE) {
1697  ts->first_pcr += dts * 300;
1698  ts->first_dts_checked = 1;
1699  }
1700 
1701  if (pts != AV_NOPTS_VALUE)
1702  pts += delay;
1703  if (dts != AV_NOPTS_VALUE)
1704  dts += delay;
1705  }
1706 
1707  if (!ts_st->first_timestamp_checked && (pts == AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE)) {
1708  av_log(s, AV_LOG_ERROR, "first pts and dts value must be set\n");
1709  return AVERROR_INVALIDDATA;
1710  }
1711  ts_st->first_timestamp_checked = 1;
1712 
1713  if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1714  const uint8_t *p = buf, *buf_end = p + size;
1715  uint32_t state = -1;
1716  int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1717  int ret = ff_check_h264_startcode(s, st, pkt);
1718  if (ret < 0)
1719  return ret;
1720 
1721  if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1722  extradd = 0;
1723 
1724  do {
1725  p = avpriv_find_start_code(p, buf_end, &state);
1726  av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", state & 0x1f);
1727  if ((state & 0x1f) == 7)
1728  extradd = 0;
1729  } while (p < buf_end && (state & 0x1f) != 9 &&
1730  (state & 0x1f) != 5 && (state & 0x1f) != 1);
1731 
1732  if ((state & 0x1f) != 5)
1733  extradd = 0;
1734  if ((state & 0x1f) != 9) { // AUD NAL
1735  data = av_malloc(pkt->size + 6 + extradd);
1736  if (!data)
1737  return AVERROR(ENOMEM);
1738  memcpy(data + 6, st->codecpar->extradata, extradd);
1739  memcpy(data + 6 + extradd, pkt->data, pkt->size);
1740  AV_WB32(data, 0x00000001);
1741  data[4] = 0x09;
1742  data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1743  buf = data;
1744  size = pkt->size + 6 + extradd;
1745  }
1746  } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1747  if (pkt->size < 2) {
1748  av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1749  return AVERROR_INVALIDDATA;
1750  }
1751  if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1752  int ret;
1753  AVPacket *pkt2 = ts->pkt;
1754 
1755  if (!ts_st->amux) {
1756  av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1757  "and extradata missing\n");
1758  } else {
1759  av_packet_unref(pkt2);
1760  pkt2->data = pkt->data;
1761  pkt2->size = pkt->size;
1763  pkt2->dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1764 
1765  ret = avio_open_dyn_buf(&ts_st->amux->pb);
1766  if (ret < 0)
1767  return ret;
1768 
1769  ret = av_write_frame(ts_st->amux, pkt2);
1770  if (ret < 0) {
1771  ffio_free_dyn_buf(&ts_st->amux->pb);
1772  return ret;
1773  }
1774  size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1775  ts_st->amux->pb = NULL;
1776  buf = data;
1777  }
1778  }
1779  } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1780  const uint8_t *p = buf, *buf_end = p + size;
1781  uint32_t state = -1;
1782  int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1783  int ret = check_hevc_startcode(s, st, pkt);
1784  if (ret < 0)
1785  return ret;
1786 
1787  if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1788  extradd = 0;
1789 
1790  do {
1791  p = avpriv_find_start_code(p, buf_end, &state);
1792  av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", (state & 0x7e)>>1);
1793  if ((state & 0x7e) == 2*32)
1794  extradd = 0;
1795  } while (p < buf_end && (state & 0x7e) != 2*35 &&
1796  (state & 0x7e) >= 2*32);
1797 
1798  if ((state & 0x7e) < 2*16 || (state & 0x7e) >= 2*24)
1799  extradd = 0;
1800  if ((state & 0x7e) != 2*35) { // AUD NAL
1801  data = av_malloc(pkt->size + 7 + extradd);
1802  if (!data)
1803  return AVERROR(ENOMEM);
1804  memcpy(data + 7, st->codecpar->extradata, extradd);
1805  memcpy(data + 7 + extradd, pkt->data, pkt->size);
1806  AV_WB32(data, 0x00000001);
1807  data[4] = 2*35;
1808  data[5] = 1;
1809  data[6] = 0x50; // any slice type (0x4) + rbsp stop one bit
1810  buf = data;
1811  size = pkt->size + 7 + extradd;
1812  }
1813  } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1814  if (pkt->size < 2) {
1815  av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1816  return AVERROR_INVALIDDATA;
1817  }
1818 
1819  /* Add Opus control header */
1820  if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1821  uint8_t *side_data;
1822  buffer_size_t side_data_size;
1823  int i, n;
1824  int ctrl_header_size;
1825  int trim_start = 0, trim_end = 0;
1826 
1827  opus_samples = opus_get_packet_samples(s, pkt);
1828 
1829  side_data = av_packet_get_side_data(pkt,
1831  &side_data_size);
1832 
1833  if (side_data && side_data_size >= 10) {
1834  trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
1835  }
1836 
1837  ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1838  if (ts_st->opus_pending_trim_start)
1839  ctrl_header_size += 2;
1840  if (trim_end)
1841  ctrl_header_size += 2;
1842 
1843  data = av_malloc(ctrl_header_size);
1844  if (!data)
1845  return AVERROR(ENOMEM);
1846 
1847  data[0] = 0x7f;
1848  data[1] = 0xe0;
1849  if (ts_st->opus_pending_trim_start)
1850  data[1] |= 0x10;
1851  if (trim_end)
1852  data[1] |= 0x08;
1853 
1854  n = pkt->size;
1855  i = 2;
1856  do {
1857  data[i] = FFMIN(n, 255);
1858  n -= 255;
1859  i++;
1860  } while (n >= 0);
1861 
1862  av_assert0(2 + pkt->size / 255 + 1 == i);
1863 
1864  if (ts_st->opus_pending_trim_start) {
1865  trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1866  AV_WB16(data + i, trim_start);
1867  i += 2;
1868  ts_st->opus_pending_trim_start -= trim_start;
1869  }
1870  if (trim_end) {
1871  trim_end = FFMIN(trim_end, opus_samples - trim_start);
1872  AV_WB16(data + i, trim_end);
1873  i += 2;
1874  }
1875 
1876  memcpy(data + i, pkt->data, pkt->size);
1877  buf = data;
1878  size = ctrl_header_size;
1879  } else {
1880  /* TODO: Can we get TS formatted data here? If so we will
1881  * need to count the samples of that too! */
1882  av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1883  }
1884  } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3 && !ts_st->dvb_ac3_desc) {
1885  AC3HeaderInfo *hdr = NULL;
1886 
1887  if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) >= 0) {
1888  uint8_t number_of_channels_flag;
1889  uint8_t service_type_flag;
1890  uint8_t full_service_flag = 1;
1891  DVBAC3Descriptor *dvb_ac3_desc;
1892 
1893  dvb_ac3_desc = av_mallocz(sizeof(*dvb_ac3_desc));
1894  if (!dvb_ac3_desc) {
1895  av_free(hdr);
1896  return AVERROR(ENOMEM);
1897  }
1898 
1899  service_type_flag = hdr->bitstream_mode;
1900  switch (hdr->channel_mode) {
1901  case AC3_CHMODE_DUALMONO:
1902  number_of_channels_flag = 1;
1903  break;
1904  case AC3_CHMODE_MONO:
1905  number_of_channels_flag = 0;
1906  break;
1907  case AC3_CHMODE_STEREO:
1908  if (hdr->dolby_surround_mode == AC3_DSURMOD_ON)
1909  number_of_channels_flag = 3;
1910  else
1911  number_of_channels_flag = 2;
1912  break;
1913  case AC3_CHMODE_3F:
1914  case AC3_CHMODE_2F1R:
1915  case AC3_CHMODE_3F1R:
1916  case AC3_CHMODE_2F2R:
1917  case AC3_CHMODE_3F2R:
1918  number_of_channels_flag = 4;
1919  break;
1920  default: /* reserved */
1921  number_of_channels_flag = 7;
1922  break;
1923  }
1924 
1925  if (service_type_flag == 1 || service_type_flag == 4 ||
1926  (service_type_flag == 7 && !number_of_channels_flag))
1927  full_service_flag = 0;
1928 
1929  dvb_ac3_desc->component_type_flag = 1;
1930  dvb_ac3_desc->component_type = (full_service_flag << 6) |
1931  ((service_type_flag & 0x7) << 3) |
1932  (number_of_channels_flag & 0x7);
1933  dvb_ac3_desc->bsid_flag = 1;
1934  dvb_ac3_desc->bsid = hdr->bitstream_id;
1935  dvb_ac3_desc->mainid_flag = 0;
1936  dvb_ac3_desc->asvc_flag = 0;
1937 
1938  ts_st->dvb_ac3_desc = dvb_ac3_desc;
1939  }
1940  av_free(hdr);
1941  }
1942 
1943  if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1944  (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1945  dts - ts_st->payload_dts >= max_audio_delay) ||
1946  ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1947  mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1948  ts_st->payload_pts, ts_st->payload_dts,
1949  ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1950  ts_st->payload_size = 0;
1951  ts_st->opus_queued_samples = 0;
1952  }
1953 
1955  av_assert0(!ts_st->payload_size);
1956  // for video and subtitle, write a single pes packet
1957  mpegts_write_pes(s, st, buf, size, pts, dts,
1958  pkt->flags & AV_PKT_FLAG_KEY, stream_id);
1959  ts_st->opus_queued_samples = 0;
1960  av_free(data);
1961  return 0;
1962  }
1963 
1964  if (!ts_st->payload_size) {
1965  ts_st->payload_pts = pts;
1966  ts_st->payload_dts = dts;
1967  ts_st->payload_flags = pkt->flags;
1968  }
1969 
1970  memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1971  ts_st->payload_size += size;
1972  ts_st->opus_queued_samples += opus_samples;
1973 
1974  av_free(data);
1975 
1976  return 0;
1977 }
1978 
1980 {
1981  MpegTSWrite *ts = s->priv_data;
1982  int i;
1983 
1984  /* flush current packets */
1985  for (i = 0; i < s->nb_streams; i++) {
1986  AVStream *st = s->streams[i];
1987  MpegTSWriteStream *ts_st = st->priv_data;
1988  if (ts_st->payload_size > 0) {
1989  mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1990  ts_st->payload_pts, ts_st->payload_dts,
1991  ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
1992  ts_st->payload_size = 0;
1993  ts_st->opus_queued_samples = 0;
1994  }
1995  }
1996 
1997  if (ts->m2ts_mode) {
1998  int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
1999  while (packets++ < 32)
2001  }
2002 }
2003 
2005 {
2006  if (!pkt) {
2008  return 1;
2009  } else {
2011  }
2012 }
2013 
2015 {
2016  if (s->pb)
2018 
2019  return 0;
2020 }
2021 
2023 {
2024  MpegTSWrite *ts = s->priv_data;
2025  MpegTSService *service;
2026  int i;
2027 
2028  av_packet_free(&ts->pkt);
2029 
2030  for (i = 0; i < s->nb_streams; i++) {
2031  AVStream *st = s->streams[i];
2032  MpegTSWriteStream *ts_st = st->priv_data;
2033  if (ts_st) {
2034  av_freep(&ts_st->dvb_ac3_desc);
2035  av_freep(&ts_st->payload);
2036  if (ts_st->amux) {
2037  avformat_free_context(ts_st->amux);
2038  ts_st->amux = NULL;
2039  }
2040  }
2041  }
2042 
2043  for (i = 0; i < ts->nb_services; i++) {
2044  service = ts->services[i];
2045  av_freep(&service);
2046  }
2047  av_freep(&ts->services);
2048 }
2049 
2051 {
2052  int ret = 1;
2053  AVStream *st = s->streams[pkt->stream_index];
2054 
2055  if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2056  if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2057  (AV_RB24(pkt->data) != 0x000001 ||
2058  (st->codecpar->extradata_size > 0 &&
2059  st->codecpar->extradata[0] == 1)))
2060  ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
2061  } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
2062  if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2063  (AV_RB24(pkt->data) != 0x000001 ||
2064  (st->codecpar->extradata_size > 0 &&
2065  st->codecpar->extradata[0] == 1)))
2066  ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
2067  }
2068 
2069  return ret;
2070 }
2071 
2072 #define OFFSET(x) offsetof(MpegTSWrite, x)
2073 #define ENC AV_OPT_FLAG_ENCODING_PARAM
2074 static const AVOption options[] = {
2075  { "mpegts_transport_stream_id", "Set transport_stream_id field.",
2076  OFFSET(transport_stream_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2077  { "mpegts_original_network_id", "Set original_network_id field.",
2078  OFFSET(original_network_id), AV_OPT_TYPE_INT, { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, ENC },
2079  { "mpegts_service_id", "Set service_id field.",
2080  OFFSET(service_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2081  { "mpegts_service_type", "Set service_type field.",
2082  OFFSET(service_type), AV_OPT_TYPE_INT, { .i64 = 0x01 }, 0x01, 0xff, ENC, "mpegts_service_type" },
2083  { "digital_tv", "Digital Television.",
2084  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2085  { "digital_radio", "Digital Radio.",
2086  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2087  { "teletext", "Teletext.",
2088  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff, ENC, "mpegts_service_type" },
2089  { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
2090  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2091  { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
2092  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2093  { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
2094  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2095  { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
2096  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2097  { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2098  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2099  { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2100  OFFSET(pmt_start_pid), AV_OPT_TYPE_INT, { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2101  { "mpegts_start_pid", "Set the first pid.",
2102  OFFSET(start_pid), AV_OPT_TYPE_INT, { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2103  { "mpegts_m2ts_mode", "Enable m2ts mode.", OFFSET(m2ts_mode), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2104  { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
2105  { "pes_payload_size", "Minimum PES packet payload in bytes",
2106  OFFSET(pes_payload_size), AV_OPT_TYPE_INT, { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, ENC },
2107  { "mpegts_flags", "MPEG-TS muxing flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, ENC, "mpegts_flags" },
2108  { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2109  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX, ENC, "mpegts_flags" },
2110  { "latm", "Use LATM packetization for AAC",
2111  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX, ENC, "mpegts_flags" },
2112  { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2113  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX, ENC, "mpegts_flags" },
2114  { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2115  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX, ENC, "mpegts_flags" },
2116  { "initial_discontinuity", "Mark initial packets as discontinuous",
2117  0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX, ENC, "mpegts_flags" },
2118  { "mpegts_copyts", "don't offset dts/pts", OFFSET(copyts), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2119  { "tables_version", "set PAT, PMT and SDT version", OFFSET(tables_version), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 31, ENC },
2120  { "omit_video_pes_length", "Omit the PES packet length for video packets",
2121  OFFSET(omit_video_pes_length), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
2122  { "pcr_period", "PCR retransmission time in milliseconds",
2123  OFFSET(pcr_period_ms), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC },
2124  { "pat_period", "PAT/PMT retransmission time limit in seconds",
2125  OFFSET(pat_period_us), AV_OPT_TYPE_DURATION, { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2126  { "sdt_period", "SDT retransmission time limit in seconds",
2127  OFFSET(sdt_period_us), AV_OPT_TYPE_DURATION, { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2128  { NULL },
2129 };
2130 
2131 static const AVClass mpegts_muxer_class = {
2132  .class_name = "MPEGTS muxer",
2133  .item_name = av_default_item_name,
2134  .option = options,
2135  .version = LIBAVUTIL_VERSION_INT,
2136 };
2137 
2139  .name = "mpegts",
2140  .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2141  .mime_type = "video/MP2T",
2142  .extensions = "ts,m2t,m2ts,mts",
2143  .priv_data_size = sizeof(MpegTSWrite),
2144  .audio_codec = AV_CODEC_ID_MP2,
2145  .video_codec = AV_CODEC_ID_MPEG2VIDEO,
2146  .init = mpegts_init,
2149  .deinit = mpegts_deinit,
2152  .priv_class = &mpegts_muxer_class,
2153 };
@ AC3_CHMODE_MONO
Definition: ac3.h:126
@ AC3_CHMODE_STEREO
Definition: ac3.h:127
@ AC3_CHMODE_2F1R
Definition: ac3.h:129
@ AC3_CHMODE_DUALMONO
Definition: ac3.h:125
@ AC3_CHMODE_3F
Definition: ac3.h:128
@ AC3_CHMODE_3F1R
Definition: ac3.h:130
@ AC3_CHMODE_2F2R
Definition: ac3.h:131
@ AC3_CHMODE_3F2R
Definition: ac3.h:132
@ AC3_DSURMOD_ON
Definition: ac3.h:139
int avpriv_ac3_parse_header(AC3HeaderInfo **phdr, const uint8_t *buf, size_t size)
Definition: ac3_parser.c:255
static double val(void *priv, double ch)
Definition: aeval.c:76
uint8_t
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define FF_PROFILE_KLVA_SYNC
Definition: avcodec.h:1980
#define FF_COMPLIANCE_NORMAL
Definition: avcodec.h:1608
Main libavformat public API header.
#define AVFMT_NODIMENSIONS
Format does not need width/height.
Definition: avformat.h:466
#define AV_DISPOSITION_HEARING_IMPAIRED
stream for hearing impaired audiences
Definition: avformat.h:831
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:471
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:465
#define AV_DISPOSITION_CLEAN_EFFECTS
stream without voice
Definition: avformat.h:833
#define AV_DISPOSITION_VISUAL_IMPAIRED
stream for visual impaired audiences
Definition: avformat.h:832
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1427
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:225
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1382
void ffio_free_dyn_buf(AVIOContext **s)
Free a dynamic buffer.
Definition: aviobuf.c:1457
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t *size)
Definition: avpacket.c:368
#define AV_RB24
Definition: intreadwrite.h:64
#define AV_RB32
Definition: intreadwrite.h:130
#define AV_RB16
Definition: intreadwrite.h:53
#define AV_RL32
Definition: intreadwrite.h:146
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
#define av_bswap32
Definition: bswap.h:33
byte swapping routines
#define flag(name)
Definition: cbs_av1.c:564
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define s(width, name)
Definition: cbs_vp9.c:257
static struct @321 state
#define fail()
Definition: checkasm.h:133
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: codec_par.c:72
#define FFMIN(a, b)
Definition: common.h:105
#define MKTAG(a, b, c, d)
Definition: common.h:478
#define GET_UTF8(val, GET_BYTE, ERROR)
Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:499
#define FFMAX(a, b)
Definition: common.h:103
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
Public header for CRC hash function implementation.
Public dictionary API.
static int nb_streams
Definition: ffprobe.c:283
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_DURATION
Definition: opt.h:239
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:224
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:480
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
@ AV_CODEC_ID_DIRAC
Definition: codec_id.h:165
@ AV_CODEC_ID_TIMED_ID3
Definition: codec_id.h:563
@ AV_CODEC_ID_HDMV_PGS_SUBTITLE
Definition: codec_id.h:529
@ AV_CODEC_ID_EAC3
Definition: codec_id.h:464
@ AV_CODEC_ID_DVB_SUBTITLE
Definition: codec_id.h:524
@ AV_CODEC_ID_S302M
Definition: codec_id.h:339
@ AV_CODEC_ID_PCM_BLURAY
Definition: codec_id.h:337
@ AV_CODEC_ID_H264
Definition: codec_id.h:76
@ AV_CODEC_ID_SMPTE_KLV
Definition: codec_id.h:561
@ AV_CODEC_ID_HDMV_TEXT_SUBTITLE
Definition: codec_id.h:547
@ AV_CODEC_ID_VC1
Definition: codec_id.h:119
@ AV_CODEC_ID_CAVS
Definition: codec_id.h:136
@ AV_CODEC_ID_MP2
Definition: codec_id.h:424
@ AV_CODEC_ID_DTS
Definition: codec_id.h:428
@ AV_CODEC_ID_HEVC
Definition: codec_id.h:223
@ AV_CODEC_ID_AAC
Definition: codec_id.h:426
@ AV_CODEC_ID_TRUEHD
Definition: codec_id.h:468
@ AV_CODEC_ID_AC3
Definition: codec_id.h:427
@ AV_CODEC_ID_DVB_TELETEXT
Definition: codec_id.h:530
@ AV_CODEC_ID_MPEG4
Definition: codec_id.h:61
@ AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:425
@ AV_CODEC_ID_MPEG1VIDEO
Definition: codec_id.h:50
@ AV_CODEC_ID_AAC_LATM
Definition: codec_id.h:473
@ AV_CODEC_ID_OPUS
Definition: codec_id.h:484
@ AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: codec_id.h:51
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
This function is the same as av_get_audio_frame_duration(), except it works with AVCodecParameters in...
Definition: utils.c:874
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:75
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:634
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.c:64
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: packet.h:156
@ AV_PKT_DATA_MPEGTS_STREAM_ID
MPEGTS stream ID as uint8_t, this is required to pass the stream ID information from the demuxer to t...
Definition: packet.h:215
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
Definition: utils.c:4436
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
Definition: options.c:211
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4509
av_warn_unused_result int avformat_write_header(AVFormatContext *s, AVDictionary **options)
Allocate the stream private data and write the stream header to an output media file.
Definition: mux.c:506
ff_const59 AVOutputFormat * av_guess_format(const char *short_name, const char *filename, const char *mime_type)
Return the output format in the list of registered output formats which best matches the provided par...
Definition: format.c:76
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
Write a packet to an output media file.
Definition: mux.c:1212
int av_match_ext(const char *filename, const char *extensions)
Return a positive value if the given filename has one of the given extensions, 0 otherwise.
Definition: format.c:38
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:374
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:392
@ AV_CRC_32_IEEE
Definition: crc.h:53
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:220
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:210
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
Definition: mathematics.c:58
@ AV_ROUND_UP
Round toward +infinity.
Definition: mathematics.h:83
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem)
Add an element to a dynamic array.
Definition: mem.c:296
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:203
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * key
int i
Definition: input.c:407
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
#define AV_WB16(p, v)
Definition: intreadwrite.h:405
common internal api header.
const uint8_t * avpriv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state)
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4945
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
Add a bitstream filter to a stream.
Definition: utils.c:5576
common internal API header
int buffer_size_t
Definition: internal.h:306
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
version
Definition: libkvazaar.c:326
void av_log_once(void *avcl, int initial_level, int subsequent_level, int *state, const char *fmt,...)
Definition: log.c:415
uint32_t tag
Definition: movenc.c:1611
#define STREAM_TYPE_VIDEO_MPEG4
Definition: mpeg.h:56
#define STREAM_TYPE_VIDEO_CAVS
Definition: mpeg.h:59
#define STREAM_TYPE_AUDIO_MPEG2
Definition: mpeg.h:52
#define STREAM_TYPE_VIDEO_HEVC
Definition: mpeg.h:58
#define STREAM_TYPE_AUDIO_AC3
Definition: mpeg.h:61
#define STREAM_TYPE_PRIVATE_DATA
Definition: mpeg.h:54
#define STREAM_TYPE_AUDIO_AAC
Definition: mpeg.h:55
#define STREAM_TYPE_VIDEO_H264
Definition: mpeg.h:57
#define STREAM_TYPE_AUDIO_MPEG1
Definition: mpeg.h:51
#define STREAM_TYPE_VIDEO_MPEG2
Definition: mpeg.h:50
#define M2TS_TEXTSUB_PID
Definition: mpegts.h:74
#define STREAM_TYPE_VIDEO_DIRAC
Definition: mpegts.h:133
#define M2TS_PGSSUB_START_PID
Definition: mpegts.h:73
#define FIRST_OTHER_PID
Definition: mpegts.h:61
#define STREAM_TYPE_VIDEO_VC1
Definition: mpegts.h:132
#define PAT_PID
Definition: mpegts.h:37
#define STREAM_ID_METADATA_STREAM
Definition: mpegts.h:144
#define M2TS_VIDEO_PID
Definition: mpegts.h:71
#define STREAM_TYPE_AUDIO_DTS
Definition: mpegts.h:136
#define PAT_TID
Definition: mpegts.h:79
#define M2TS_AUDIO_START_PID
Definition: mpegts.h:72
#define STREAM_TYPE_AUDIO_TRUEHD
Definition: mpegts.h:137
#define PMT_TID
Definition: mpegts.h:81
#define SDT_TID
Definition: mpegts.h:87
#define STREAM_TYPE_AUDIO_AAC_LATM
Definition: mpegts.h:126
#define SDT_PID
Definition: mpegts.h:43
#define ISO_639_LANGUAGE_DESCRIPTOR
Definition: mpegts.h:150
#define REGISTRATION_DESCRIPTOR
Definition: mpegts.h:149
#define STREAM_ID_EXTENDED_STREAM_ID
Definition: mpegts.h:145
#define LAST_OTHER_PID
Definition: mpegts.h:62
#define METADATA_DESCRIPTOR
Definition: mpegts.h:154
#define STREAM_ID_PRIVATE_STREAM_1
Definition: mpegts.h:141
#define STREAM_ID_VIDEO_STREAM_0
Definition: mpegts.h:143
#define M2TS_PMT_PID
Definition: mpegts.h:69
#define STREAM_TYPE_AUDIO_EAC3
Definition: mpegts.h:138
#define STREAM_TYPE_METADATA
Definition: mpegts.h:128
#define TS_PACKET_SIZE
Definition: mpegts.h:29
#define STREAM_ID_AUDIO_STREAM_0
Definition: mpegts.h:142
static const AVClass mpegts_muxer_class
Definition: mpegtsenc.c:2131
#define SDT_RETRANS_TIME
Definition: mpegtsenc.c:227
static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
Definition: mpegtsenc.c:1625
static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
Definition: mpegtsenc.c:907
static void mpegts_deinit(AVFormatContext *s)
Definition: mpegtsenc.c:2022
static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
Definition: mpegtsenc.c:1673
static int mpegts_write_section1(MpegTSSection *s, int tid, int id, int version, int sec_num, int last_sec_num, uint8_t *buf, int len)
Definition: mpegtsenc.c:193
static void write_pts(uint8_t *q, int fourbits, int64_t pts)
Definition: mpegtsenc.c:1245
static void extend_af(uint8_t *pkt, int size)
Definition: mpegtsenc.c:1276
static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
Definition: mpegtsenc.c:1217
static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
Definition: mpegtsenc.c:856
static const AVOption options[]
Definition: mpegtsenc.c:2074
static void write_packet(AVFormatContext *s, const uint8_t *packet)
Definition: mpegtsenc.c:842
static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mpegtsenc.c:2004
static void select_pcr_streams(AVFormatContext *s)
Definition: mpegtsenc.c:938
#define PCR_TIME_BASE
Definition: mpegtsenc.c:38
static void mpegts_write_flush(AVFormatContext *s)
Definition: mpegtsenc.c:1979
#define MPEGTS_FLAG_REEMIT_PAT_PMT
Definition: mpegtsenc.c:105
static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int64_t pcr)
Definition: mpegtsenc.c:1163
static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
Definition: mpegtsenc.c:1606
static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
Definition: mpegtsenc.c:278
#define PCR_RETRANS_TIME
Definition: mpegtsenc.c:229
static void mpegts_write_pes(AVFormatContext *s, AVStream *st, const uint8_t *payload, int payload_size, int64_t pts, int64_t dts, int key, int stream_id)
Definition: mpegtsenc.c:1296
#define SECTION_LENGTH
Definition: mpegtsenc.c:127
int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
Check presence of H264 startcode.
Definition: mpegtsenc.c:1589
static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
Definition: mpegtsenc.c:272
#define DEFAULT_PES_PAYLOAD_SIZE
Definition: mpegtsenc.c:123
static void put16(uint8_t **q_ptr, int val)
Definition: mpegtsenc.c:184
static int64_t get_pcr(const MpegTSWrite *ts)
Definition: mpegtsenc.c:836
static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
Definition: mpegtsenc.c:290
static void mpegts_write_sdt(AVFormatContext *s)
Definition: mpegtsenc.c:762
static MpegTSService * mpegts_add_service(AVFormatContext *s, int sid, const AVDictionary *metadata, AVProgram *program)
Definition: mpegtsenc.c:862
static uint8_t * get_ts_payload_start(uint8_t *pkt)
Definition: mpegtsenc.c:1284
#define MPEGTS_FLAG_AAC_LATM
Definition: mpegtsenc.c:106
static int mpegts_write_end(AVFormatContext *s)
Definition: mpegtsenc.c:2014
#define DVB_PRIVATE_NETWORK_START
Definition: mpegtsenc.c:42
#define ENC
Definition: mpegtsenc.c:2073
#define PAT_RETRANS_TIME
Definition: mpegtsenc.c:228
static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
Definition: mpegtsenc.c:130
static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
Definition: mpegtsenc.c:2050
static void set_af_flag(uint8_t *pkt, int flag)
Definition: mpegtsenc.c:1260
#define MPEGTS_FLAG_DISCONT
Definition: mpegtsenc.c:109
#define MPEGTS_FLAG_PAT_PMT_AT_FRAMES
Definition: mpegtsenc.c:107
#define DEFAULT_PROVIDER_NAME
Definition: mpegtsenc.c:223
static void mpegts_write_pat(AVFormatContext *s)
Definition: mpegtsenc.c:255
static int mpegts_init(AVFormatContext *s)
Definition: mpegtsenc.c:967
#define OFFSET(x)
Definition: mpegtsenc.c:2072
static int encode_str8(uint8_t *buf, const char *str)
Definition: mpegtsenc.c:804
static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
Definition: mpegtsenc.c:432
@ MPEGTS_SERVICE_TYPE_DIGITAL_RADIO
Definition: mpegtsenc.c:67
@ MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV
Definition: mpegtsenc.c:73
@ MPEGTS_SERVICE_TYPE_TELETEXT
Definition: mpegtsenc.c:68
@ MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO
Definition: mpegtsenc.c:69
@ MPEGTS_SERVICE_TYPE_DIGITAL_TV
Definition: mpegtsenc.c:66
@ MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV
Definition: mpegtsenc.c:72
@ MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV
Definition: mpegtsenc.c:71
@ MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV
Definition: mpegtsenc.c:70
AVOutputFormat ff_mpegts_muxer
Definition: mpegtsenc.c:2138
#define MPEGTS_FLAG_SYSTEM_B
Definition: mpegtsenc.c:108
#define DEFAULT_SERVICE_NAME
Definition: mpegtsenc.c:224
static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
Definition: mpegtsenc.c:381
static void mpegts_insert_null_packet(AVFormatContext *s)
Definition: mpegtsenc.c:1202
static int write_pcr_bits(uint8_t *buf, int64_t pcr)
Definition: mpegtsenc.c:1187
static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
Definition: mux.c:1095
const char data[16]
Definition: mxf.c:142
int frame_size
Definition: mxfenc.c:2206
AVOptions.
typedef void(RENAME(mix_any_func_type))
#define snprintf
Definition: snprintf.h:34
const uint8_t * code
Definition: spdifenc.c:413
Coded AC-3 header values up to the lfeon element, plus derived values.
Definition: ac3.h:178
uint8_t bitstream_mode
Definition: ac3.h:186
int dolby_surround_mode
Definition: ac3.h:195
uint8_t bitstream_id
Definition: ac3.h:185
uint8_t channel_mode
Definition: ac3.h:187
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
int channels
Audio only.
Definition: codec_par.h:166
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
int profile
Codec-specific bitstream restrictions that the stream conforms to.
Definition: codec_par.h:120
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int sample_rate
Audio only.
Definition: codec_par.h:170
int initial_padding
Audio only.
Definition: codec_par.h:189
char * value
Definition: dict.h:83
Format I/O context.
Definition: avformat.h:1232
AVIOContext * pb
I/O context.
Definition: avformat.h:1274
ff_const59 struct AVOutputFormat * oformat
The output container format.
Definition: avformat.h:1251
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1300
AVOption.
Definition: opt.h:248
const char * name
Definition: avformat.h:491
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
uint8_t * data
Definition: packet.h:369
New fields can be added to the end with minor version bumps.
Definition: avformat.h:1150
unsigned int nb_stream_indexes
Definition: avformat.h:1155
unsigned int * stream_index
Definition: avformat.h:1154
AVDictionary * metadata
Definition: avformat.h:1156
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:924
AVDictionary * metadata
Definition: avformat.h:937
void * priv_data
Definition: avformat.h:888
int id
Format-specific stream ID.
Definition: avformat.h:880
int index
stream index in AVFormatContext
Definition: avformat.h:874
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:902
int disposition
AV_DISPOSITION_* bit field.
Definition: avformat.h:926
uint8_t asvc
Definition: mpegts.h:201
uint8_t bsid_flag
Definition: mpegts.h:194
uint8_t mainid_flag
Definition: mpegts.h:195
uint8_t bsid
Definition: mpegts.h:199
uint8_t component_type_flag
Definition: mpegts.h:193
uint8_t mainid
Definition: mpegts.h:200
uint8_t component_type
Definition: mpegts.h:198
uint8_t asvc_flag
Definition: mpegts.h:196
void(* write_packet)(struct MpegTSSection *s, const uint8_t *packet)
Definition: mpegtsenc.c:51
int discontinuity
Definition: mpegtsenc.c:50
void * opaque
Definition: mpegtsenc.c:52
AVProgram * program
Definition: mpegtsenc.c:61
uint8_t provider_name[256]
Definition: mpegtsenc.c:59
uint8_t name[256]
Definition: mpegtsenc.c:58
MpegTSSection pmt
Definition: mpegtsenc.c:56
int64_t payload_pts
Definition: mpegtsenc.c:238
int64_t pcr_period
Definition: mpegtsenc.c:245
int opus_pending_trim_start
Definition: mpegtsenc.c:250
uint8_t * payload
Definition: mpegtsenc.c:241
int64_t last_pcr
Definition: mpegtsenc.c:246
int first_timestamp_checked
first pts/dts check needed
Definition: mpegtsenc.c:236
AVFormatContext * amux
Definition: mpegtsenc.c:242
int64_t payload_dts
Definition: mpegtsenc.c:239
DVBAC3Descriptor * dvb_ac3_desc
Definition: mpegtsenc.c:252
int64_t next_pcr
Definition: mpegtsenc.c:86
MpegTSSection sdt
Definition: mpegtsenc.c:78
int omit_video_pes_length
Definition: mpegtsenc.c:118
int64_t last_pat_ts
Definition: mpegtsenc.c:115
int mux_rate
set to 1 when VBR
Definition: mpegtsenc.c:87
int pcr_period_ms
Definition: mpegtsenc.c:104
int pmt_start_pid
Definition: mpegtsenc.c:96
int tables_version
Definition: mpegtsenc.c:112
int64_t last_sdt_ts
Definition: mpegtsenc.c:116
MpegTSService ** services
Definition: mpegtsenc.c:79
int m2ts_video_pid
Definition: mpegtsenc.c:99
MpegTSSection pat
Definition: mpegtsenc.c:77
int64_t sdt_period_us
Definition: mpegtsenc.c:114
int pes_payload_size
Definition: mpegtsenc.c:88
int original_network_id
Definition: mpegtsenc.c:92
int nb_services
Definition: mpegtsenc.c:83
int m2ts_textsub_pid
Definition: mpegtsenc.c:102
int m2ts_audio_pid
Definition: mpegtsenc.c:100
AVPacket * pkt
Definition: mpegtsenc.c:80
int first_dts_checked
Definition: mpegtsenc.c:85
int64_t pat_period_us
Definition: mpegtsenc.c:113
const AVClass * av_class
Definition: mpegtsenc.c:76
int64_t total_size
Definition: mpegtsenc.c:89
int m2ts_mode
Definition: mpegtsenc.c:98
int service_id
Definition: mpegtsenc.c:93
int service_type
Definition: mpegtsenc.c:94
int64_t first_pcr
Definition: mpegtsenc.c:84
int64_t pat_period
Definition: mpegtsenc.c:82
int transport_stream_id
Definition: mpegtsenc.c:91
int m2ts_pgssub_pid
Definition: mpegtsenc.c:101
int start_pid
Definition: mpegtsenc.c:97
int64_t sdt_period
Definition: mpegtsenc.c:81
#define av_free(p)
#define av_freep(p)
#define av_malloc(s)
#define av_log(a,...)
int64_t duration
Definition: movenc.c:64
AVPacket * pkt
Definition: movenc.c:59
AVFormatContext * ctx
Definition: movenc.c:48
static int64_t pts
int size
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
enum AVCodecID codec_id
Definition: vaapi_decode.c:369
const char * b
Definition: vf_curves.c:118
int len