2 * MPEG-2 transport stream (aka DVB) muxer
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
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"
30 #include "libavcodec/ac3_parser_internal.h"
31 #include "libavcodec/internal.h"
34 #include "avio_internal.h"
38 #define PCR_TIME_BASE 27000000
40 /* write DVB SI sections */
42 #define DVB_PRIVATE_NETWORK_START 0xff01
44 /*********************************************/
45 /* mpegts section writer */
47 typedef struct MpegTSSection {
51 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
55 typedef struct MpegTSService {
56 MpegTSSection pmt; /* MPEG-2 PMT table context */
57 int sid; /* service ID */
59 uint8_t provider_name[256];
64 // service_type values as defined in ETSI 300 468
66 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
67 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
68 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
69 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
70 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
71 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
72 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19,
73 MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV = 0x1F,
75 typedef struct MpegTSWrite {
76 const AVClass *av_class;
77 MpegTSSection pat; /* MPEG-2 PAT table */
78 MpegTSSection sdt; /* MPEG-2 SDT table context */
79 MpegTSService **services;
81 int64_t sdt_period; /* SDT period in PCR time base */
82 int64_t pat_period; /* PAT/PMT period in PCR time base */
85 int first_dts_checked;
87 int mux_rate; ///< set to 1 when VBR
91 int transport_stream_id;
92 int original_network_id;
102 int m2ts_textsub_pid;
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
113 int64_t pat_period_us;
114 int64_t sdt_period_us;
118 int omit_video_pes_length;
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)
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
129 /* NOTE: 4 bytes must be left at the end for the crc32 */
130 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
133 unsigned char packet[TS_PACKET_SIZE];
134 const unsigned char *buf_ptr;
136 int first, b, len1, left;
138 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
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;
146 /* send each packet */
149 first = buf == buf_ptr;
157 s->cc = s->cc + 1 & 0xf;
159 if (s->discontinuity) {
163 s->discontinuity = 0;
166 *q++ = 0; /* 0 offset */
167 len1 = TS_PACKET_SIZE - (q - packet);
170 memcpy(q, buf_ptr, len1);
172 /* add known padding data */
173 left = TS_PACKET_SIZE - (q - packet);
175 memset(q, 0xff, left);
177 s->write_packet(s, packet);
184 static inline void put16(uint8_t **q_ptr, int val)
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)
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;
202 tot_len = 3 + 5 + len + 4;
203 /* check if not too big */
205 return AVERROR_INVALIDDATA;
209 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
211 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
216 mpegts_write_section(s, section, tot_len);
220 /*********************************************/
223 #define DEFAULT_PROVIDER_NAME "FFmpeg"
224 #define DEFAULT_SERVICE_NAME "Service"
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
231 typedef struct MpegTSWriteStream {
232 int pid; /* stream associated pid */
236 int first_timestamp_checked; ///< first pts/dts check needed
237 int prev_payload_key;
242 AVFormatContext *amux;
245 int64_t pcr_period; /* PCR period in PCR time base */
249 int opus_queued_samples;
250 int opus_pending_trim_start;
252 DVBAC3Descriptor *dvb_ac3_desc;
255 static void mpegts_write_pat(AVFormatContext *s)
257 MpegTSWrite *ts = s->priv_data;
258 MpegTSService *service;
259 uint8_t data[SECTION_LENGTH], *q;
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);
268 mpegts_write_section1(&ts->pat, PAT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
272 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
274 memcpy(*q_ptr, buf, len);
278 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
281 *q++ = REGISTRATION_DESCRIPTOR;
290 static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
292 MpegTSWrite *ts = s->priv_data;
293 MpegTSWriteStream *ts_st = st->priv_data;
296 switch (st->codecpar->codec_id) {
297 case AV_CODEC_ID_MPEG1VIDEO:
298 case AV_CODEC_ID_MPEG2VIDEO:
299 stream_type = STREAM_TYPE_VIDEO_MPEG2;
301 case AV_CODEC_ID_MPEG4:
302 stream_type = STREAM_TYPE_VIDEO_MPEG4;
304 case AV_CODEC_ID_H264:
305 stream_type = STREAM_TYPE_VIDEO_H264;
307 case AV_CODEC_ID_HEVC:
308 stream_type = STREAM_TYPE_VIDEO_HEVC;
310 case AV_CODEC_ID_CAVS:
311 stream_type = STREAM_TYPE_VIDEO_CAVS;
313 case AV_CODEC_ID_DIRAC:
314 stream_type = STREAM_TYPE_VIDEO_DIRAC;
316 case AV_CODEC_ID_VC1:
317 stream_type = STREAM_TYPE_VIDEO_VC1;
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;
325 stream_type = STREAM_TYPE_AUDIO_MPEG1;
328 case AV_CODEC_ID_AAC:
329 stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
330 ? STREAM_TYPE_AUDIO_AAC_LATM
331 : STREAM_TYPE_AUDIO_AAC;
333 case AV_CODEC_ID_AAC_LATM:
334 stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
336 case AV_CODEC_ID_AC3:
337 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
338 ? STREAM_TYPE_PRIVATE_DATA
339 : STREAM_TYPE_AUDIO_AC3;
341 case AV_CODEC_ID_EAC3:
342 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
343 ? STREAM_TYPE_PRIVATE_DATA
344 : STREAM_TYPE_AUDIO_EAC3;
346 case AV_CODEC_ID_DTS:
347 stream_type = STREAM_TYPE_AUDIO_DTS;
349 case AV_CODEC_ID_TRUEHD:
350 stream_type = STREAM_TYPE_AUDIO_TRUEHD;
352 case AV_CODEC_ID_OPUS:
353 stream_type = STREAM_TYPE_PRIVATE_DATA;
355 case AV_CODEC_ID_TIMED_ID3:
356 stream_type = STREAM_TYPE_METADATA;
358 case AV_CODEC_ID_DVB_SUBTITLE:
359 case AV_CODEC_ID_DVB_TELETEXT:
360 stream_type = STREAM_TYPE_PRIVATE_DATA;
362 case AV_CODEC_ID_SMPTE_KLV:
363 if (st->codecpar->profile == FF_PROFILE_KLVA_SYNC) {
364 stream_type = STREAM_TYPE_METADATA;
366 stream_type = STREAM_TYPE_PRIVATE_DATA;
370 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
371 "Stream %d, codec %s, is muxed as a private data stream "
372 "and may not be recognized upon reading.\n", st->index,
373 avcodec_get_name(st->codecpar->codec_id));
374 stream_type = STREAM_TYPE_PRIVATE_DATA;
381 static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
384 MpegTSWriteStream *ts_st = st->priv_data;
386 switch (st->codecpar->codec_id) {
387 case AV_CODEC_ID_MPEG2VIDEO:
388 stream_type = STREAM_TYPE_VIDEO_MPEG2;
390 case AV_CODEC_ID_H264:
391 stream_type = STREAM_TYPE_VIDEO_H264;
393 case AV_CODEC_ID_VC1:
394 stream_type = STREAM_TYPE_VIDEO_VC1;
396 case AV_CODEC_ID_HEVC:
397 stream_type = STREAM_TYPE_VIDEO_HEVC;
399 case AV_CODEC_ID_PCM_BLURAY:
402 case AV_CODEC_ID_AC3:
405 case AV_CODEC_ID_DTS:
406 stream_type = (st->codecpar->channels > 6) ? 0x85 : 0x82;
408 case AV_CODEC_ID_TRUEHD:
411 case AV_CODEC_ID_EAC3:
414 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
417 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
421 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
422 "Stream %d, codec %s, is muxed as a private data stream "
423 "and may not be recognized upon reading.\n", st->index,
424 avcodec_get_name(st->codecpar->codec_id));
425 stream_type = STREAM_TYPE_PRIVATE_DATA;
432 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
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;
439 put16(&q, 0xe000 | service->pcr_pid);
441 program_info_length_ptr = q;
442 q += 2; /* patched after */
444 /* put program info here */
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
454 val = 0xf000 | (q - program_info_length_ptr - 2);
455 program_info_length_ptr[0] = val >> 8;
456 program_info_length_ptr[1] = val;
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 const char default_language[] = "und";
463 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
464 enum AVCodecID codec_id = st->codecpar->codec_id;
466 if (s->nb_programs) {
468 AVProgram *program = service->program;
470 for (k = 0; k < program->nb_stream_indexes; k++)
471 if (program->stream_index[k] == i) {
480 if (q - data > SECTION_LENGTH - 32) {
485 stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
488 put16(&q, 0xe000 | ts_st->pid);
490 q += 2; /* patched after */
492 /* write optional descriptors here */
493 switch (st->codecpar->codec_type) {
494 case AVMEDIA_TYPE_AUDIO:
495 if (codec_id == AV_CODEC_ID_AC3)
496 put_registration_descriptor(&q, MKTAG('A', 'C', '-', '3'));
497 if (codec_id == AV_CODEC_ID_EAC3)
498 put_registration_descriptor(&q, MKTAG('E', 'A', 'C', '3'));
499 if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
500 if (codec_id == AV_CODEC_ID_AC3) {
501 DVBAC3Descriptor *dvb_ac3_desc = ts_st->dvb_ac3_desc;
503 *q++=0x6a; // AC3 descriptor see A038 DVB SI
506 !!(dvb_ac3_desc->component_type_flag) +
507 !!(dvb_ac3_desc->bsid_flag) +
508 !!(dvb_ac3_desc->mainid_flag) +
509 !!(dvb_ac3_desc->asvc_flag);
512 *q++ = dvb_ac3_desc->component_type_flag << 7 | dvb_ac3_desc->bsid_flag << 6 |
513 dvb_ac3_desc->mainid_flag << 5 | dvb_ac3_desc->asvc_flag << 4;
515 if (dvb_ac3_desc->component_type_flag) *q++ = dvb_ac3_desc->component_type;
516 if (dvb_ac3_desc->bsid_flag) *q++ = dvb_ac3_desc->bsid;
517 if (dvb_ac3_desc->mainid_flag) *q++ = dvb_ac3_desc->mainid;
518 if (dvb_ac3_desc->asvc_flag) *q++ = dvb_ac3_desc->asvc;
520 *q++=1; // 1 byte, all flags sets to 0
521 *q++=0; // omit all fields...
523 } else if (codec_id == AV_CODEC_ID_EAC3) {
524 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
525 *q++=1; // 1 byte, all flags sets to 0
526 *q++=0; // omit all fields...
529 if (codec_id == AV_CODEC_ID_S302M)
530 put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
531 if (codec_id == AV_CODEC_ID_OPUS) {
532 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
533 if (q - data > SECTION_LENGTH - 6 - 4) {
538 put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
540 *q++ = 0x7f; /* DVB extension descriptor */
544 if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
545 if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) {
546 /* RTP mapping family */
547 *q++ = st->codecpar->channels;
548 } else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
549 st->codecpar->extradata_size >= 21 + st->codecpar->channels) {
550 static const uint8_t coupled_stream_counts[9] = {
551 1, 0, 1, 1, 2, 2, 2, 3, 3
553 static const uint8_t channel_map_a[8][8] = {
560 {0, 4, 1, 2, 3, 5, 6},
561 {0, 6, 1, 2, 3, 4, 5, 7},
563 static const uint8_t channel_map_b[8][8] = {
570 {0, 1, 2, 3, 4, 5, 6},
571 {0, 1, 2, 3, 4, 5, 6, 7},
573 /* Vorbis mapping family */
575 if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
576 st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
577 memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
578 *q++ = st->codecpar->channels;
579 } else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
580 st->codecpar->extradata[20] == 0 &&
581 memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
582 *q++ = st->codecpar->channels | 0x80;
584 /* Unsupported, could write an extended descriptor here */
585 av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
590 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
593 } else if (st->codecpar->channels <= 2) {
594 /* Assume RTP mapping family */
595 *q++ = st->codecpar->channels;
598 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
603 if (language != default_language ||
604 st->disposition & (AV_DISPOSITION_CLEAN_EFFECTS |
605 AV_DISPOSITION_HEARING_IMPAIRED |
606 AV_DISPOSITION_VISUAL_IMPAIRED)) {
607 const char *p, *next;
610 *q++ = ISO_639_LANGUAGE_DESCRIPTOR;
614 for (p = next = language; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
615 if (q - data > SECTION_LENGTH - 4) {
619 next = strchr(p, ',');
620 if (strlen(p) != 3 && (!next || next != p + 3))
621 continue; /* not a 3-letter code */
627 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
629 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
631 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
634 *q++ = 0; /* undefined type */
640 q -= 2; /* no language codes were written */
643 case AVMEDIA_TYPE_SUBTITLE:
644 if (codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
646 int extradata_copied = 0;
648 *q++ = 0x59; /* subtitling_descriptor */
651 while (strlen(language) >= 3) {
652 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
660 if (*language != '\0')
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;
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;
679 put16(&q, 1); /* composition_page_id */
680 put16(&q, 1); /* ancillary_page_id */
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;
690 /* The descriptor tag. teletext_descriptor */
694 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
699 if (*language != '\0')
702 if (st->codecpar->extradata_size - 1 > extradata_copied) {
703 memcpy(q, st->codecpar->extradata + extradata_copied, 2);
704 extradata_copied += 2;
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. */
716 *len_ptr = q - len_ptr - 1;
719 case AVMEDIA_TYPE_VIDEO:
720 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
721 put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
722 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
723 put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
724 } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
725 put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
728 case AVMEDIA_TYPE_DATA:
729 if (codec_id == AV_CODEC_ID_SMPTE_KLV) {
730 put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
731 } else if (codec_id == AV_CODEC_ID_TIMED_ID3) {
732 const char *tag = "ID3 ";
733 *q++ = METADATA_DESCRIPTOR;
735 put16(&q, 0xffff); /* metadata application format */
736 putbuf(&q, tag, strlen(tag));
737 *q++ = 0xff; /* metadata format */
738 putbuf(&q, tag, strlen(tag));
739 *q++ = 0; /* metadata service ID */
740 *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
745 val = 0xf000 | (q - desc_length_ptr - 2);
746 desc_length_ptr[0] = val >> 8;
747 desc_length_ptr[1] = val;
751 av_log(s, AV_LOG_ERROR,
752 "The PMT section cannot fit stream %d and all following streams.\n"
753 "Try reducing the number of languages in the audio streams "
754 "or the total number of streams.\n", i);
756 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
761 static void mpegts_write_sdt(AVFormatContext *s)
763 MpegTSWrite *ts = s->priv_data;
764 MpegTSService *service;
765 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
766 int i, running_status, free_ca_mode, val;
769 put16(&q, ts->original_network_id);
771 for (i = 0; i < ts->nb_services; i++) {
772 service = ts->services[i];
773 put16(&q, service->sid);
774 *q++ = 0xfc | 0x00; /* currently no EIT info */
775 desc_list_len_ptr = q;
777 running_status = 4; /* running */
780 /* write only one descriptor for the service name and provider */
784 *q++ = ts->service_type;
785 putbuf(&q, service->provider_name, service->provider_name[0] + 1);
786 putbuf(&q, service->name, service->name[0] + 1);
787 desc_len_ptr[0] = q - desc_len_ptr - 1;
789 /* fill descriptor length */
790 val = (running_status << 13) | (free_ca_mode << 12) |
791 (q - desc_list_len_ptr - 2);
792 desc_list_len_ptr[0] = val >> 8;
793 desc_list_len_ptr[1] = val;
795 mpegts_write_section1(&ts->sdt, SDT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
799 /* This stores a string in buf with the correct encoding and also sets the
800 * first byte as the length. !str is accepted for an empty string.
801 * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
802 * then we keep it as is, otherwise we signal UTF-8 encoding. */
803 static int encode_str8(uint8_t *buf, const char *str)
808 str_len = strlen(str);
809 if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
810 const uint8_t *q = str;
811 int has_multibyte = 0;
814 GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
815 has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
817 if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
819 return AVERROR(EINVAL);
820 buf[0] = str_len + 1;
822 memcpy(&buf[2], str, str_len);
827 /* Otherwise let's just encode the string as is! */
829 return AVERROR(EINVAL);
831 memcpy(&buf[1], str, str_len);
835 static int64_t get_pcr(const MpegTSWrite *ts)
837 return av_rescale(ts->total_size + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
841 static void write_packet(AVFormatContext *s, const uint8_t *packet)
843 MpegTSWrite *ts = s->priv_data;
845 int64_t pcr = get_pcr(s->priv_data);
846 uint32_t tp_extra_header = pcr % 0x3fffffff;
847 tp_extra_header = AV_RB32(&tp_extra_header);
848 avio_write(s->pb, (unsigned char *) &tp_extra_header,
849 sizeof(tp_extra_header));
851 avio_write(s->pb, packet, TS_PACKET_SIZE);
852 ts->total_size += TS_PACKET_SIZE;
855 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
857 AVFormatContext *ctx = s->opaque;
858 write_packet(ctx, packet);
861 static MpegTSService *mpegts_add_service(AVFormatContext *s, int sid,
862 const AVDictionary *metadata,
865 MpegTSWrite *ts = s->priv_data;
866 MpegTSService *service;
867 AVDictionaryEntry *title, *provider;
868 char default_service_name[32];
869 const char *service_name;
870 const char *provider_name;
872 title = av_dict_get(metadata, "service_name", NULL, 0);
874 title = av_dict_get(metadata, "title", NULL, 0);
875 snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
876 service_name = title ? title->value : default_service_name;
877 provider = av_dict_get(metadata, "service_provider", NULL, 0);
878 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
880 service = av_mallocz(sizeof(MpegTSService));
883 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
885 service->pcr_pid = 0x1fff;
886 if (encode_str8(service->provider_name, provider_name) < 0 ||
887 encode_str8(service->name, service_name) < 0) {
888 av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
891 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
894 service->pmt.write_packet = section_write_packet;
895 service->pmt.opaque = s;
896 service->pmt.cc = 15;
897 service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
898 service->program = program;
906 static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
908 MpegTSWrite *ts = s->priv_data;
909 MpegTSWriteStream *ts_st = pcr_st->priv_data;
911 if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
912 int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
913 ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
915 /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
916 int64_t frame_period = 0;
917 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
918 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
920 av_log(s, AV_LOG_WARNING, "frame size not set\n");
923 frame_period = av_rescale_rnd(frame_size, PCR_TIME_BASE, pcr_st->codecpar->sample_rate, AV_ROUND_UP);
924 } else if (pcr_st->avg_frame_rate.num) {
925 frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
927 if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
928 ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
930 ts_st->pcr_period = 1;
933 // output a PCR as soon as possible
934 ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
937 static void select_pcr_streams(AVFormatContext *s)
939 MpegTSWrite *ts = s->priv_data;
941 for (int i = 0; i < ts->nb_services; i++) {
942 MpegTSService *service = ts->services[i];
943 AVStream *pcr_st = NULL;
944 AVProgram *program = service->program;
945 int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
947 for (int j = 0; j < nb_streams; j++) {
948 AVStream *st = s->streams[program ? program->stream_index[j] : j];
950 pcr_st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
957 MpegTSWriteStream *ts_st = pcr_st->priv_data;
958 service->pcr_pid = ts_st->pid;
959 enable_pcr_generation_for_stream(s, pcr_st);
960 av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
961 service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
966 static int mpegts_init(AVFormatContext *s)
968 MpegTSWrite *ts = s->priv_data;
972 if (ts->m2ts_mode == -1) {
973 if (av_match_ext(s->url, "m2ts")) {
980 ts->m2ts_video_pid = M2TS_VIDEO_PID;
981 ts->m2ts_audio_pid = M2TS_AUDIO_START_PID;
982 ts->m2ts_pgssub_pid = M2TS_PGSSUB_START_PID;
983 ts->m2ts_textsub_pid = M2TS_TEXTSUB_PID;
986 ts->pmt_start_pid = M2TS_PMT_PID;
987 if (s->nb_programs > 1) {
988 av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
989 return AVERROR(EINVAL);
993 if (s->max_delay < 0) /* Not set by the caller */
996 // round up to a whole number of TS packets
997 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
999 if (!s->nb_programs) {
1000 /* allocate a single DVB service */
1001 if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
1002 return AVERROR(ENOMEM);
1004 for (i = 0; i < s->nb_programs; i++) {
1005 AVProgram *program = s->programs[i];
1006 if (!mpegts_add_service(s, program->id, program->metadata, program))
1007 return AVERROR(ENOMEM);
1011 ts->pat.pid = PAT_PID;
1012 /* Initialize at 15 so that it wraps and is equal to 0 for the
1013 * first packet we write. */
1015 ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1016 ts->pat.write_packet = section_write_packet;
1019 ts->sdt.pid = SDT_PID;
1021 ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1022 ts->sdt.write_packet = section_write_packet;
1025 ts->pkt = av_packet_alloc();
1027 return AVERROR(ENOMEM);
1029 /* assign pids to each stream */
1030 for (i = 0; i < s->nb_streams; i++) {
1031 AVStream *st = s->streams[i];
1032 MpegTSWriteStream *ts_st;
1034 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
1036 return AVERROR(ENOMEM);
1038 st->priv_data = ts_st;
1040 avpriv_set_pts_info(st, 33, 1, 90000);
1042 ts_st->payload = av_mallocz(ts->pes_payload_size);
1043 if (!ts_st->payload) {
1044 return AVERROR(ENOMEM);
1047 /* MPEG pid values < 16 are reserved. Applications which set st->id in
1048 * this range are assigned a calculated pid. */
1050 if (ts->m2ts_mode) {
1051 switch (st->codecpar->codec_type) {
1052 case AVMEDIA_TYPE_VIDEO:
1053 ts_st->pid = ts->m2ts_video_pid++;
1055 case AVMEDIA_TYPE_AUDIO:
1056 ts_st->pid = ts->m2ts_audio_pid++;
1058 case AVMEDIA_TYPE_SUBTITLE:
1059 switch (st->codecpar->codec_id) {
1060 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
1061 ts_st->pid = ts->m2ts_pgssub_pid++;
1063 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
1064 ts_st->pid = ts->m2ts_textsub_pid++;
1069 if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1070 ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1071 ts->m2ts_pgssub_pid > M2TS_PGSSUB_START_PID + 32 ||
1072 ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1074 av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1075 return AVERROR(EINVAL);
1078 ts_st->pid = ts->start_pid + i;
1081 ts_st->pid = st->id;
1083 if (ts_st->pid >= 0x1FFF) {
1084 av_log(s, AV_LOG_ERROR,
1085 "Invalid stream id %d, must be less than 8191\n", st->id);
1086 return AVERROR(EINVAL);
1088 for (j = 0; j < ts->nb_services; j++) {
1089 if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1090 av_log(s, AV_LOG_ERROR,
1091 "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1092 return AVERROR(EINVAL);
1094 if (ts_st->pid == ts->services[j]->pmt.pid) {
1095 av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1096 return AVERROR(EINVAL);
1099 for (j = 0; j < i; j++) {
1100 MpegTSWriteStream *ts_st_prev = s->streams[j]->priv_data;
1101 if (ts_st_prev->pid == ts_st->pid) {
1102 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1103 return AVERROR(EINVAL);
1106 ts_st->payload_pts = AV_NOPTS_VALUE;
1107 ts_st->payload_dts = AV_NOPTS_VALUE;
1109 ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1110 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1111 st->codecpar->extradata_size > 0) {
1113 ts_st->amux = avformat_alloc_context();
1115 return AVERROR(ENOMEM);
1117 ts_st->amux->oformat =
1118 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1120 if (!ts_st->amux->oformat) {
1121 return AVERROR(EINVAL);
1123 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1124 return AVERROR(ENOMEM);
1126 ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1129 ast->time_base = st->time_base;
1130 ret = avformat_write_header(ts_st->amux, NULL);
1134 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1135 ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
1140 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1142 select_pcr_streams(s);
1144 ts->last_pat_ts = AV_NOPTS_VALUE;
1145 ts->last_sdt_ts = AV_NOPTS_VALUE;
1146 ts->pat_period = av_rescale(ts->pat_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1147 ts->sdt_period = av_rescale(ts->sdt_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1149 if (ts->mux_rate == 1)
1150 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1152 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1153 av_log(s, AV_LOG_VERBOSE,
1154 "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms\n",
1155 av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1156 av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1161 /* send SDT, PAT and PMT tables regularly */
1162 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int64_t pcr)
1164 MpegTSWrite *ts = s->priv_data;
1167 if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1168 (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1171 if (pcr != AV_NOPTS_VALUE)
1172 ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1173 mpegts_write_sdt(s);
1175 if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1176 (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1178 if (pcr != AV_NOPTS_VALUE)
1179 ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1180 mpegts_write_pat(s);
1181 for (i = 0; i < ts->nb_services; i++)
1182 mpegts_write_pmt(s, ts->services[i]);
1186 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1188 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1190 *buf++ = pcr_high >> 25;
1191 *buf++ = pcr_high >> 17;
1192 *buf++ = pcr_high >> 9;
1193 *buf++ = pcr_high >> 1;
1194 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1200 /* Write a single null transport stream packet */
1201 static void mpegts_insert_null_packet(AVFormatContext *s)
1204 uint8_t buf[TS_PACKET_SIZE];
1211 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1212 write_packet(s, buf);
1215 /* Write a single transport stream packet with a PCR and no payload */
1216 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1218 MpegTSWrite *ts = s->priv_data;
1219 MpegTSWriteStream *ts_st = st->priv_data;
1221 uint8_t buf[TS_PACKET_SIZE];
1225 *q++ = ts_st->pid >> 8;
1227 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1228 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1229 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1230 *q++ = 0x10; /* Adaptation flags: PCR present */
1231 if (ts_st->discontinuity) {
1233 ts_st->discontinuity = 0;
1236 /* PCR coded into 6 bytes */
1237 q += write_pcr_bits(q, get_pcr(ts));
1239 /* stuffing bytes */
1240 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1241 write_packet(s, buf);
1244 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1248 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1250 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1253 val = (((pts) & 0x7fff) << 1) | 1;
1258 /* Set an adaptation field flag in an MPEG-TS packet*/
1259 static void set_af_flag(uint8_t *pkt, int flag)
1261 // expect at least one flag to set
1264 if ((pkt[3] & 0x20) == 0) {
1265 // no AF yet, set adaptation field flag
1267 // 1 byte length, no flags
1274 /* Extend the adaptation field by size bytes */
1275 static void extend_af(uint8_t *pkt, int size)
1277 // expect already existing adaptation field
1278 av_assert0(pkt[3] & 0x20);
1282 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1283 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1286 return pkt + 5 + pkt[4];
1291 /* Add a PES header to the front of the payload, and segment into an integer
1292 * number of TS packets. The final TS packet is padded using an oversized
1293 * adaptation header to exactly fill the last TS packet.
1294 * NOTE: 'payload' contains a complete PES payload. */
1295 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1296 const uint8_t *payload, int payload_size,
1297 int64_t pts, int64_t dts, int key, int stream_id)
1299 MpegTSWriteStream *ts_st = st->priv_data;
1300 MpegTSWrite *ts = s->priv_data;
1301 uint8_t buf[TS_PACKET_SIZE];
1303 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1304 int afc_len, stuffing_len;
1305 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1306 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1309 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1310 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1314 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1317 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1321 while (payload_size > 0) {
1322 int64_t pcr = AV_NOPTS_VALUE;
1323 if (ts->mux_rate > 1)
1325 else if (dts != AV_NOPTS_VALUE)
1326 pcr = (dts - delay) * 300;
1328 retransmit_si_info(s, force_pat, force_sdt, pcr);
1333 if (ts->mux_rate > 1) {
1334 /* Send PCR packets for all PCR streams if needed */
1336 if (pcr >= ts->next_pcr) {
1337 int64_t next_pcr = INT64_MAX;
1338 for (int i = 0; i < s->nb_streams; i++) {
1339 /* Make the current stream the last, because for that we
1340 * can insert the pcr into the payload later */
1341 int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1342 AVStream *st2 = s->streams[st2_index];
1343 MpegTSWriteStream *ts_st2 = st2->priv_data;
1344 if (ts_st2->pcr_period) {
1345 if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1346 ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1348 mpegts_insert_pcr_only(s, st2);
1354 next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1357 ts->next_pcr = next_pcr;
1359 if (dts != AV_NOPTS_VALUE && (dts - pcr / 300) > delay) {
1360 /* pcr insert gets priority over null packet insert */
1362 mpegts_insert_pcr_only(s, st);
1364 mpegts_insert_null_packet(s);
1365 /* recalculate write_pcr and possibly retransmit si_info */
1368 } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1369 if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1370 ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1375 /* prepare packet header */
1378 val = ts_st->pid >> 8;
1379 if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1385 ts_st->cc = ts_st->cc + 1 & 0xf;
1386 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1387 if (ts_st->discontinuity) {
1388 set_af_flag(buf, 0x80);
1389 q = get_ts_payload_start(buf);
1390 ts_st->discontinuity = 0;
1392 if (key && is_start && pts != AV_NOPTS_VALUE) {
1393 // set Random Access for key frames
1394 if (ts_st->pcr_period)
1396 set_af_flag(buf, 0x40);
1397 q = get_ts_payload_start(buf);
1400 set_af_flag(buf, 0x10);
1401 q = get_ts_payload_start(buf);
1402 // add 11, pcr references the last byte of program clock reference base
1403 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1404 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1405 extend_af(buf, write_pcr_bits(q, pcr));
1406 q = get_ts_payload_start(buf);
1409 int pes_extension = 0;
1410 int pes_header_stuffing_bytes = 0;
1411 /* write PES header */
1415 is_dvb_subtitle = 0;
1416 is_dvb_teletext = 0;
1417 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1418 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1419 *q++ = STREAM_ID_EXTENDED_STREAM_ID;
1421 *q++ = STREAM_ID_VIDEO_STREAM_0;
1422 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1423 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1424 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1425 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1426 *q++ = STREAM_ID_AUDIO_STREAM_0;
1427 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1428 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1430 *q++ = STREAM_ID_EXTENDED_STREAM_ID;
1431 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1432 st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
1433 *q++ = STREAM_ID_PRIVATE_STREAM_1;
1434 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1435 *q++ = stream_id != -1 ? stream_id : STREAM_ID_METADATA_STREAM;
1437 if (stream_id == STREAM_ID_PRIVATE_STREAM_1) /* asynchronous KLV */
1438 pts = dts = AV_NOPTS_VALUE;
1440 *q++ = STREAM_ID_PRIVATE_STREAM_1;
1441 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1442 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1443 is_dvb_subtitle = 1;
1444 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1445 is_dvb_teletext = 1;
1451 if (pts != AV_NOPTS_VALUE) {
1455 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1459 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1460 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1461 /* set PES_extension_flag */
1465 /* One byte for PES2 extension flag +
1466 * one byte for extension length +
1467 * one byte for extension id */
1470 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1471 * otherwise it will not play sound on blu-ray
1473 if (ts->m2ts_mode &&
1474 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1475 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1476 /* set PES_extension_flag */
1481 if (is_dvb_teletext) {
1482 pes_header_stuffing_bytes = 0x24 - header_len;
1485 len = payload_size + header_len + 3;
1486 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1487 if (is_dvb_subtitle) {
1493 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1499 /* data alignment indicator is required for subtitle and data streams */
1500 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1505 if (pts != AV_NOPTS_VALUE) {
1506 write_pts(q, flags >> 6, pts);
1509 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1510 write_pts(q, 1, dts);
1513 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1514 flags = 0x01; /* set PES_extension_flag_2 */
1516 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1517 /* Set the stream ID extension flag bit to 0 and
1518 * write the extended stream ID. */
1521 /* For Blu-ray AC3 Audio Setting extended flags */
1522 if (ts->m2ts_mode &&
1524 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1525 flags = 0x01; /* set PES_extension_flag_2 */
1527 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1528 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1532 if (is_dvb_subtitle) {
1533 /* First two fields of DVB subtitles PES data:
1534 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1535 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1539 if (is_dvb_teletext) {
1540 memset(q, 0xff, pes_header_stuffing_bytes);
1541 q += pes_header_stuffing_bytes;
1546 header_len = q - buf;
1548 len = TS_PACKET_SIZE - header_len;
1549 if (len > payload_size)
1551 stuffing_len = TS_PACKET_SIZE - header_len - len;
1552 if (stuffing_len > 0) {
1553 /* add stuffing with AFC */
1554 if (buf[3] & 0x20) {
1555 /* stuffing already present: increase its size */
1556 afc_len = buf[4] + 1;
1557 memmove(buf + 4 + afc_len + stuffing_len,
1559 header_len - (4 + afc_len));
1560 buf[4] += stuffing_len;
1561 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1564 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1566 buf[4] = stuffing_len - 1;
1567 if (stuffing_len >= 2) {
1569 memset(buf + 6, 0xff, stuffing_len - 2);
1574 if (is_dvb_subtitle && payload_size == len) {
1575 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1576 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1578 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1582 payload_size -= len;
1583 write_packet(s, buf);
1585 ts_st->prev_payload_key = key;
1588 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1590 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1591 if (!st->nb_frames) {
1592 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1593 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1594 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1595 return AVERROR_INVALIDDATA;
1597 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1599 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1600 av_log(s, AV_LOG_WARNING, "\n");
1605 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1607 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1608 if (!st->nb_frames) {
1609 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1610 return AVERROR_PATCHWELCOME;
1612 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1614 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1615 av_log(s, AV_LOG_WARNING, "\n");
1620 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1621 * Released under the LGPL v2.1+, written by
1622 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1624 static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1626 static const int durations[32] = {
1627 480, 960, 1920, 2880, /* Silk NB */
1628 480, 960, 1920, 2880, /* Silk MB */
1629 480, 960, 1920, 2880, /* Silk WB */
1630 480, 960, /* Hybrid SWB */
1631 480, 960, /* Hybrid FB */
1632 120, 240, 480, 960, /* CELT NB */
1633 120, 240, 480, 960, /* CELT NB */
1634 120, 240, 480, 960, /* CELT NB */
1635 120, 240, 480, 960, /* CELT NB */
1637 int toc, frame_duration, nframes, duration;
1644 frame_duration = durations[toc >> 3];
1658 nframes = pkt->data[1] & 63;
1662 duration = nframes * frame_duration;
1663 if (duration > 5760) {
1664 av_log(s, AV_LOG_WARNING,
1665 "Opus packet duration > 120 ms, invalid");
1672 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1674 AVStream *st = s->streams[pkt->stream_index];
1675 int size = pkt->size;
1676 uint8_t *buf = pkt->data;
1677 uint8_t *data = NULL;
1678 MpegTSWrite *ts = s->priv_data;
1679 MpegTSWriteStream *ts_st = st->priv_data;
1680 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1681 const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1682 int64_t dts = pkt->dts, pts = pkt->pts;
1683 int opus_samples = 0;
1684 buffer_size_t side_data_size;
1685 uint8_t *side_data = NULL;
1688 side_data = av_packet_get_side_data(pkt,
1689 AV_PKT_DATA_MPEGTS_STREAM_ID,
1692 stream_id = side_data[0];
1694 if (ts->copyts < 1) {
1695 if (!ts->first_dts_checked && dts != AV_NOPTS_VALUE) {
1696 ts->first_pcr += dts * 300;
1697 ts->first_dts_checked = 1;
1700 if (pts != AV_NOPTS_VALUE)
1702 if (dts != AV_NOPTS_VALUE)
1706 if (!ts_st->first_timestamp_checked && (pts == AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE)) {
1707 av_log(s, AV_LOG_ERROR, "first pts and dts value must be set\n");
1708 return AVERROR_INVALIDDATA;
1710 ts_st->first_timestamp_checked = 1;
1712 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1713 const uint8_t *p = buf, *buf_end = p + size;
1714 uint32_t state = -1;
1715 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1716 int ret = ff_check_h264_startcode(s, st, pkt);
1720 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1724 p = avpriv_find_start_code(p, buf_end, &state);
1725 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", state & 0x1f);
1726 if ((state & 0x1f) == 7)
1728 } while (p < buf_end && (state & 0x1f) != 9 &&
1729 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1731 if ((state & 0x1f) != 5)
1733 if ((state & 0x1f) != 9) { // AUD NAL
1734 data = av_malloc(pkt->size + 6 + extradd);
1736 return AVERROR(ENOMEM);
1737 memcpy(data + 6, st->codecpar->extradata, extradd);
1738 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1739 AV_WB32(data, 0x00000001);
1741 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1743 size = pkt->size + 6 + extradd;
1745 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1746 if (pkt->size < 2) {
1747 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1748 return AVERROR_INVALIDDATA;
1750 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1752 AVPacket *pkt2 = ts->pkt;
1755 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1756 "and extradata missing\n");
1758 av_packet_unref(pkt2);
1759 pkt2->data = pkt->data;
1760 pkt2->size = pkt->size;
1761 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1762 pkt2->dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1764 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1768 ret = av_write_frame(ts_st->amux, pkt2);
1770 ffio_free_dyn_buf(&ts_st->amux->pb);
1773 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1774 ts_st->amux->pb = NULL;
1778 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1779 const uint8_t *p = buf, *buf_end = p + size;
1780 uint32_t state = -1;
1781 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1782 int ret = check_hevc_startcode(s, st, pkt);
1786 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1790 p = avpriv_find_start_code(p, buf_end, &state);
1791 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", (state & 0x7e)>>1);
1792 if ((state & 0x7e) == 2*32)
1794 } while (p < buf_end && (state & 0x7e) != 2*35 &&
1795 (state & 0x7e) >= 2*32);
1797 if ((state & 0x7e) < 2*16 || (state & 0x7e) >= 2*24)
1799 if ((state & 0x7e) != 2*35) { // AUD NAL
1800 data = av_malloc(pkt->size + 7 + extradd);
1802 return AVERROR(ENOMEM);
1803 memcpy(data + 7, st->codecpar->extradata, extradd);
1804 memcpy(data + 7 + extradd, pkt->data, pkt->size);
1805 AV_WB32(data, 0x00000001);
1808 data[6] = 0x50; // any slice type (0x4) + rbsp stop one bit
1810 size = pkt->size + 7 + extradd;
1812 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1813 if (pkt->size < 2) {
1814 av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1815 return AVERROR_INVALIDDATA;
1818 /* Add Opus control header */
1819 if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1821 buffer_size_t side_data_size;
1823 int ctrl_header_size;
1824 int trim_start = 0, trim_end = 0;
1826 opus_samples = opus_get_packet_samples(s, pkt);
1828 side_data = av_packet_get_side_data(pkt,
1829 AV_PKT_DATA_SKIP_SAMPLES,
1832 if (side_data && side_data_size >= 10) {
1833 trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
1836 ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1837 if (ts_st->opus_pending_trim_start)
1838 ctrl_header_size += 2;
1840 ctrl_header_size += 2;
1842 data = av_malloc(ctrl_header_size);
1844 return AVERROR(ENOMEM);
1848 if (ts_st->opus_pending_trim_start)
1856 data[i] = FFMIN(n, 255);
1861 av_assert0(2 + pkt->size / 255 + 1 == i);
1863 if (ts_st->opus_pending_trim_start) {
1864 trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1865 AV_WB16(data + i, trim_start);
1867 ts_st->opus_pending_trim_start -= trim_start;
1870 trim_end = FFMIN(trim_end, opus_samples - trim_start);
1871 AV_WB16(data + i, trim_end);
1875 memcpy(data + i, pkt->data, pkt->size);
1877 size = ctrl_header_size;
1879 /* TODO: Can we get TS formatted data here? If so we will
1880 * need to count the samples of that too! */
1881 av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1883 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3 && !ts_st->dvb_ac3_desc) {
1884 AC3HeaderInfo *hdr = NULL;
1886 if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) >= 0) {
1887 uint8_t number_of_channels_flag;
1888 uint8_t service_type_flag;
1889 uint8_t full_service_flag = 1;
1890 DVBAC3Descriptor *dvb_ac3_desc;
1892 dvb_ac3_desc = av_mallocz(sizeof(*dvb_ac3_desc));
1893 if (!dvb_ac3_desc) {
1895 return AVERROR(ENOMEM);
1898 service_type_flag = hdr->bitstream_mode;
1899 switch (hdr->channel_mode) {
1900 case AC3_CHMODE_DUALMONO:
1901 number_of_channels_flag = 1;
1903 case AC3_CHMODE_MONO:
1904 number_of_channels_flag = 0;
1906 case AC3_CHMODE_STEREO:
1907 if (hdr->dolby_surround_mode == AC3_DSURMOD_ON)
1908 number_of_channels_flag = 3;
1910 number_of_channels_flag = 2;
1913 case AC3_CHMODE_2F1R:
1914 case AC3_CHMODE_3F1R:
1915 case AC3_CHMODE_2F2R:
1916 case AC3_CHMODE_3F2R:
1917 number_of_channels_flag = 4;
1919 default: /* reserved */
1920 number_of_channels_flag = 7;
1924 if (service_type_flag == 1 || service_type_flag == 4 ||
1925 (service_type_flag == 7 && !number_of_channels_flag))
1926 full_service_flag = 0;
1928 dvb_ac3_desc->component_type_flag = 1;
1929 dvb_ac3_desc->component_type = (full_service_flag << 6) |
1930 ((service_type_flag & 0x7) << 3) |
1931 (number_of_channels_flag & 0x7);
1932 dvb_ac3_desc->bsid_flag = 1;
1933 dvb_ac3_desc->bsid = hdr->bitstream_id;
1934 dvb_ac3_desc->mainid_flag = 0;
1935 dvb_ac3_desc->asvc_flag = 0;
1937 ts_st->dvb_ac3_desc = dvb_ac3_desc;
1942 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1943 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1944 dts - ts_st->payload_dts >= max_audio_delay) ||
1945 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1946 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1947 ts_st->payload_pts, ts_st->payload_dts,
1948 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1949 ts_st->payload_size = 0;
1950 ts_st->opus_queued_samples = 0;
1953 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1954 av_assert0(!ts_st->payload_size);
1955 // for video and subtitle, write a single pes packet
1956 mpegts_write_pes(s, st, buf, size, pts, dts,
1957 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
1958 ts_st->opus_queued_samples = 0;
1963 if (!ts_st->payload_size) {
1964 ts_st->payload_pts = pts;
1965 ts_st->payload_dts = dts;
1966 ts_st->payload_flags = pkt->flags;
1969 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1970 ts_st->payload_size += size;
1971 ts_st->opus_queued_samples += opus_samples;
1978 static void mpegts_write_flush(AVFormatContext *s)
1980 MpegTSWrite *ts = s->priv_data;
1983 /* flush current packets */
1984 for (i = 0; i < s->nb_streams; i++) {
1985 AVStream *st = s->streams[i];
1986 MpegTSWriteStream *ts_st = st->priv_data;
1987 if (ts_st->payload_size > 0) {
1988 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1989 ts_st->payload_pts, ts_st->payload_dts,
1990 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
1991 ts_st->payload_size = 0;
1992 ts_st->opus_queued_samples = 0;
1996 if (ts->m2ts_mode) {
1997 int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
1998 while (packets++ < 32)
1999 mpegts_insert_null_packet(s);
2003 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
2006 mpegts_write_flush(s);
2009 return mpegts_write_packet_internal(s, pkt);
2013 static int mpegts_write_end(AVFormatContext *s)
2016 mpegts_write_flush(s);
2021 static void mpegts_deinit(AVFormatContext *s)
2023 MpegTSWrite *ts = s->priv_data;
2024 MpegTSService *service;
2027 av_packet_free(&ts->pkt);
2029 for (i = 0; i < s->nb_streams; i++) {
2030 AVStream *st = s->streams[i];
2031 MpegTSWriteStream *ts_st = st->priv_data;
2033 av_freep(&ts_st->dvb_ac3_desc);
2034 av_freep(&ts_st->payload);
2036 avformat_free_context(ts_st->amux);
2042 for (i = 0; i < ts->nb_services; i++) {
2043 service = ts->services[i];
2046 av_freep(&ts->services);
2049 static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2052 AVStream *st = s->streams[pkt->stream_index];
2054 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2055 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2056 (AV_RB24(pkt->data) != 0x000001 ||
2057 (st->codecpar->extradata_size > 0 &&
2058 st->codecpar->extradata[0] == 1)))
2059 ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
2060 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
2061 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2062 (AV_RB24(pkt->data) != 0x000001 ||
2063 (st->codecpar->extradata_size > 0 &&
2064 st->codecpar->extradata[0] == 1)))
2065 ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
2071 #define OFFSET(x) offsetof(MpegTSWrite, x)
2072 #define ENC AV_OPT_FLAG_ENCODING_PARAM
2073 static const AVOption options[] = {
2074 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
2075 OFFSET(transport_stream_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2076 { "mpegts_original_network_id", "Set original_network_id field.",
2077 OFFSET(original_network_id), AV_OPT_TYPE_INT, { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, ENC },
2078 { "mpegts_service_id", "Set service_id field.",
2079 OFFSET(service_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2080 { "mpegts_service_type", "Set service_type field.",
2081 OFFSET(service_type), AV_OPT_TYPE_INT, { .i64 = 0x01 }, 0x01, 0xff, ENC, "mpegts_service_type" },
2082 { "digital_tv", "Digital Television.",
2083 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2084 { "digital_radio", "Digital Radio.",
2085 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2086 { "teletext", "Teletext.",
2087 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff, ENC, "mpegts_service_type" },
2088 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
2089 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2090 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
2091 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2092 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
2093 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2094 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
2095 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2096 { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2097 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2098 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2099 OFFSET(pmt_start_pid), AV_OPT_TYPE_INT, { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2100 { "mpegts_start_pid", "Set the first pid.",
2101 OFFSET(start_pid), AV_OPT_TYPE_INT, { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2102 { "mpegts_m2ts_mode", "Enable m2ts mode.", OFFSET(m2ts_mode), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2103 { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
2104 { "pes_payload_size", "Minimum PES packet payload in bytes",
2105 OFFSET(pes_payload_size), AV_OPT_TYPE_INT, { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, ENC },
2106 { "mpegts_flags", "MPEG-TS muxing flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, ENC, "mpegts_flags" },
2107 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2108 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX, ENC, "mpegts_flags" },
2109 { "latm", "Use LATM packetization for AAC",
2110 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX, ENC, "mpegts_flags" },
2111 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2112 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX, ENC, "mpegts_flags" },
2113 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2114 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX, ENC, "mpegts_flags" },
2115 { "initial_discontinuity", "Mark initial packets as discontinuous",
2116 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX, ENC, "mpegts_flags" },
2117 { "mpegts_copyts", "don't offset dts/pts", OFFSET(copyts), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2118 { "tables_version", "set PAT, PMT and SDT version", OFFSET(tables_version), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 31, ENC },
2119 { "omit_video_pes_length", "Omit the PES packet length for video packets",
2120 OFFSET(omit_video_pes_length), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
2121 { "pcr_period", "PCR retransmission time in milliseconds",
2122 OFFSET(pcr_period_ms), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC },
2123 { "pat_period", "PAT/PMT retransmission time limit in seconds",
2124 OFFSET(pat_period_us), AV_OPT_TYPE_DURATION, { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2125 { "sdt_period", "SDT retransmission time limit in seconds",
2126 OFFSET(sdt_period_us), AV_OPT_TYPE_DURATION, { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2130 static const AVClass mpegts_muxer_class = {
2131 .class_name = "MPEGTS muxer",
2132 .item_name = av_default_item_name,
2134 .version = LIBAVUTIL_VERSION_INT,
2137 AVOutputFormat ff_mpegts_muxer = {
2139 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2140 .mime_type = "video/MP2T",
2141 .extensions = "ts,m2t,m2ts,mts",
2142 .priv_data_size = sizeof(MpegTSWrite),
2143 .audio_codec = AV_CODEC_ID_MP2,
2144 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
2145 .init = mpegts_init,
2146 .write_packet = mpegts_write_packet,
2147 .write_trailer = mpegts_write_end,
2148 .deinit = mpegts_deinit,
2149 .check_bitstream = mpegts_check_bitstream,
2150 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2151 .priv_class = &mpegts_muxer_class,