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;
80 int64_t sdt_period; /* SDT period in PCR time base */
81 int64_t pat_period; /* PAT/PMT period in PCR time base */
85 int mux_rate; ///< set to 1 when VBR
88 int transport_stream_id;
89 int original_network_id;
102 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
103 #define MPEGTS_FLAG_AAC_LATM 0x02
104 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
105 #define MPEGTS_FLAG_SYSTEM_B 0x08
106 #define MPEGTS_FLAG_DISCONT 0x10
110 int64_t pat_period_us;
111 int64_t sdt_period_us;
115 int omit_video_pes_length;
118 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
119 #define DEFAULT_PES_HEADER_FREQ 16
120 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
122 /* The section length is 12 bits. The first 2 are set to 0, the remaining
123 * 10 bits should not exceed 1021. */
124 #define SECTION_LENGTH 1020
126 /* NOTE: 4 bytes must be left at the end for the crc32 */
127 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
130 unsigned char packet[TS_PACKET_SIZE];
131 const unsigned char *buf_ptr;
133 int first, b, len1, left;
135 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
138 buf[len - 4] = (crc >> 24) & 0xff;
139 buf[len - 3] = (crc >> 16) & 0xff;
140 buf[len - 2] = (crc >> 8) & 0xff;
141 buf[len - 1] = crc & 0xff;
143 /* send each packet */
146 first = buf == buf_ptr;
154 s->cc = s->cc + 1 & 0xf;
156 if (s->discontinuity) {
160 s->discontinuity = 0;
163 *q++ = 0; /* 0 offset */
164 len1 = TS_PACKET_SIZE - (q - packet);
167 memcpy(q, buf_ptr, len1);
169 /* add known padding data */
170 left = TS_PACKET_SIZE - (q - packet);
172 memset(q, 0xff, left);
174 s->write_packet(s, packet);
181 static inline void put16(uint8_t **q_ptr, int val)
190 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
191 int version, int sec_num, int last_sec_num,
192 uint8_t *buf, int len)
194 uint8_t section[1024], *q;
195 unsigned int tot_len;
196 /* reserved_future_use field must be set to 1 for SDT */
197 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
199 tot_len = 3 + 5 + len + 4;
200 /* check if not too big */
202 return AVERROR_INVALIDDATA;
206 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
208 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
213 mpegts_write_section(s, section, tot_len);
217 /*********************************************/
220 #define DEFAULT_PROVIDER_NAME "FFmpeg"
221 #define DEFAULT_SERVICE_NAME "Service"
223 /* we retransmit the SI info at this rate */
224 #define SDT_RETRANS_TIME 500
225 #define PAT_RETRANS_TIME 100
226 #define PCR_RETRANS_TIME 20
228 typedef struct MpegTSWriteStream {
229 int pid; /* stream associated pid */
233 int first_pts_check; ///< first pts check needed
234 int prev_payload_key;
239 AVFormatContext *amux;
242 int64_t pcr_period; /* PCR period in PCR time base */
246 int opus_queued_samples;
247 int opus_pending_trim_start;
249 DVBAC3Descriptor *dvb_ac3_desc;
252 static void mpegts_write_pat(AVFormatContext *s)
254 MpegTSWrite *ts = s->priv_data;
255 MpegTSService *service;
256 uint8_t data[SECTION_LENGTH], *q;
260 for (i = 0; i < ts->nb_services; i++) {
261 service = ts->services[i];
262 put16(&q, service->sid);
263 put16(&q, 0xe000 | service->pmt.pid);
265 mpegts_write_section1(&ts->pat, PAT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
269 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
271 memcpy(*q_ptr, buf, len);
275 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
278 *q++ = 0x05; /* MPEG-2 registration descriptor*/
287 static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
289 MpegTSWrite *ts = s->priv_data;
290 MpegTSWriteStream *ts_st = st->priv_data;
293 switch (st->codecpar->codec_id) {
294 case AV_CODEC_ID_MPEG1VIDEO:
295 case AV_CODEC_ID_MPEG2VIDEO:
296 stream_type = STREAM_TYPE_VIDEO_MPEG2;
298 case AV_CODEC_ID_MPEG4:
299 stream_type = STREAM_TYPE_VIDEO_MPEG4;
301 case AV_CODEC_ID_H264:
302 stream_type = STREAM_TYPE_VIDEO_H264;
304 case AV_CODEC_ID_HEVC:
305 stream_type = STREAM_TYPE_VIDEO_HEVC;
307 case AV_CODEC_ID_CAVS:
308 stream_type = STREAM_TYPE_VIDEO_CAVS;
310 case AV_CODEC_ID_DIRAC:
311 stream_type = STREAM_TYPE_VIDEO_DIRAC;
313 case AV_CODEC_ID_VC1:
314 stream_type = STREAM_TYPE_VIDEO_VC1;
316 case AV_CODEC_ID_MP2:
317 case AV_CODEC_ID_MP3:
318 if ( st->codecpar->sample_rate > 0
319 && st->codecpar->sample_rate < 32000) {
320 stream_type = STREAM_TYPE_AUDIO_MPEG2;
322 stream_type = STREAM_TYPE_AUDIO_MPEG1;
325 case AV_CODEC_ID_AAC:
326 stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
327 ? STREAM_TYPE_AUDIO_AAC_LATM
328 : STREAM_TYPE_AUDIO_AAC;
330 case AV_CODEC_ID_AAC_LATM:
331 stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
333 case AV_CODEC_ID_AC3:
334 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
335 ? STREAM_TYPE_PRIVATE_DATA
336 : STREAM_TYPE_AUDIO_AC3;
338 case AV_CODEC_ID_EAC3:
339 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
340 ? STREAM_TYPE_PRIVATE_DATA
341 : STREAM_TYPE_AUDIO_EAC3;
343 case AV_CODEC_ID_DTS:
344 stream_type = STREAM_TYPE_AUDIO_DTS;
346 case AV_CODEC_ID_TRUEHD:
347 stream_type = STREAM_TYPE_AUDIO_TRUEHD;
349 case AV_CODEC_ID_OPUS:
350 stream_type = STREAM_TYPE_PRIVATE_DATA;
352 case AV_CODEC_ID_TIMED_ID3:
353 stream_type = STREAM_TYPE_METADATA;
355 case AV_CODEC_ID_DVB_SUBTITLE:
356 case AV_CODEC_ID_DVB_TELETEXT:
357 stream_type = STREAM_TYPE_PRIVATE_DATA;
359 case AV_CODEC_ID_SMPTE_KLV:
360 if (st->codecpar->profile == FF_PROFILE_KLVA_SYNC) {
361 stream_type = STREAM_TYPE_METADATA;
363 stream_type = STREAM_TYPE_PRIVATE_DATA;
367 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
368 "Stream %d, codec %s, is muxed as a private data stream "
369 "and may not be recognized upon reading.\n", st->index,
370 avcodec_get_name(st->codecpar->codec_id));
371 stream_type = STREAM_TYPE_PRIVATE_DATA;
378 static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
381 MpegTSWriteStream *ts_st = st->priv_data;
383 switch (st->codecpar->codec_id) {
384 case AV_CODEC_ID_MPEG2VIDEO:
385 stream_type = STREAM_TYPE_VIDEO_MPEG2;
387 case AV_CODEC_ID_H264:
388 stream_type = STREAM_TYPE_VIDEO_H264;
390 case AV_CODEC_ID_VC1:
391 stream_type = STREAM_TYPE_VIDEO_VC1;
393 case AV_CODEC_ID_HEVC:
394 stream_type = STREAM_TYPE_VIDEO_HEVC;
396 case AV_CODEC_ID_PCM_BLURAY:
399 case AV_CODEC_ID_AC3:
402 case AV_CODEC_ID_DTS:
403 stream_type = (st->codecpar->channels > 6) ? 0x85 : 0x82;
405 case AV_CODEC_ID_TRUEHD:
408 case AV_CODEC_ID_EAC3:
411 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
414 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
418 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
419 "Stream %d, codec %s, is muxed as a private data stream "
420 "and may not be recognized upon reading.\n", st->index,
421 avcodec_get_name(st->codecpar->codec_id));
422 stream_type = STREAM_TYPE_PRIVATE_DATA;
429 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
431 MpegTSWrite *ts = s->priv_data;
432 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
433 int val, stream_type, i, err = 0;
436 put16(&q, 0xe000 | service->pcr_pid);
438 program_info_length_ptr = q;
439 q += 2; /* patched after */
441 /* put program info here */
443 put_registration_descriptor(&q, MKTAG('H', 'D', 'M', 'V'));
444 *q++ = 0x88; // descriptor_tag - hdmv_copy_control_descriptor
445 *q++ = 0x04; // descriptor_length
446 put16(&q, 0x0fff); // CA_System_ID
447 *q++ = 0xfc; // private_data_byte
448 *q++ = 0xfc; // private_data_byte
451 val = 0xf000 | (q - program_info_length_ptr - 2);
452 program_info_length_ptr[0] = val >> 8;
453 program_info_length_ptr[1] = val;
455 for (i = 0; i < s->nb_streams; i++) {
456 AVStream *st = s->streams[i];
457 MpegTSWriteStream *ts_st = st->priv_data;
458 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
459 enum AVCodecID codec_id = st->codecpar->codec_id;
461 if (s->nb_programs) {
463 AVProgram *program = service->program;
465 for (k = 0; k < program->nb_stream_indexes; k++)
466 if (program->stream_index[k] == i) {
475 if (q - data > SECTION_LENGTH - 32) {
480 stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
483 put16(&q, 0xe000 | ts_st->pid);
485 q += 2; /* patched after */
487 /* write optional descriptors here */
488 switch (st->codecpar->codec_type) {
489 case AVMEDIA_TYPE_AUDIO:
490 if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
491 if (codec_id == AV_CODEC_ID_AC3) {
492 DVBAC3Descriptor *dvb_ac3_desc = ts_st->dvb_ac3_desc;
494 *q++=0x6a; // AC3 descriptor see A038 DVB SI
497 !!(dvb_ac3_desc->component_type_flag) +
498 !!(dvb_ac3_desc->bsid_flag) +
499 !!(dvb_ac3_desc->mainid_flag) +
500 !!(dvb_ac3_desc->asvc_flag);
503 *q++ = dvb_ac3_desc->component_type_flag << 7 | dvb_ac3_desc->bsid_flag << 6 |
504 dvb_ac3_desc->mainid_flag << 5 | dvb_ac3_desc->asvc_flag << 4;
506 if (dvb_ac3_desc->component_type_flag) *q++ = dvb_ac3_desc->component_type;
507 if (dvb_ac3_desc->bsid_flag) *q++ = dvb_ac3_desc->bsid;
508 if (dvb_ac3_desc->mainid_flag) *q++ = dvb_ac3_desc->mainid;
509 if (dvb_ac3_desc->asvc_flag) *q++ = dvb_ac3_desc->asvc;
511 *q++=1; // 1 byte, all flags sets to 0
512 *q++=0; // omit all fields...
514 } else if (codec_id == AV_CODEC_ID_EAC3) {
515 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
516 *q++=1; // 1 byte, all flags sets to 0
517 *q++=0; // omit all fields...
520 if (codec_id == AV_CODEC_ID_S302M)
521 put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
522 if (codec_id == AV_CODEC_ID_OPUS) {
523 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
524 if (q - data > SECTION_LENGTH - 6 - 4) {
529 put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
531 *q++ = 0x7f; /* DVB extension descriptor */
535 if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
536 if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) {
537 /* RTP mapping family */
538 *q++ = st->codecpar->channels;
539 } else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
540 st->codecpar->extradata_size >= 21 + st->codecpar->channels) {
541 static const uint8_t coupled_stream_counts[9] = {
542 1, 0, 1, 1, 2, 2, 2, 3, 3
544 static const uint8_t channel_map_a[8][8] = {
551 {0, 4, 1, 2, 3, 5, 6},
552 {0, 6, 1, 2, 3, 4, 5, 7},
554 static const uint8_t channel_map_b[8][8] = {
561 {0, 1, 2, 3, 4, 5, 6},
562 {0, 1, 2, 3, 4, 5, 6, 7},
564 /* Vorbis mapping family */
566 if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
567 st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
568 memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
569 *q++ = st->codecpar->channels;
570 } else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
571 st->codecpar->extradata[20] == 0 &&
572 memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
573 *q++ = st->codecpar->channels | 0x80;
575 /* Unsupported, could write an extended descriptor here */
576 av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
581 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
584 } else if (st->codecpar->channels <= 2) {
585 /* Assume RTP mapping family */
586 *q++ = st->codecpar->channels;
589 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
596 char *next = lang->value;
599 *q++ = 0x0a; /* ISO 639 language descriptor */
603 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
604 if (q - data > SECTION_LENGTH - 4) {
608 next = strchr(p, ',');
609 if (strlen(p) != 3 && (!next || next != p + 3))
610 continue; /* not a 3-letter code */
616 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
618 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
620 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
623 *q++ = 0; /* undefined type */
629 q -= 2; /* no language codes were written */
632 case AVMEDIA_TYPE_SUBTITLE:
634 const char default_language[] = "und";
635 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
637 if (codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
639 int extradata_copied = 0;
641 *q++ = 0x59; /* subtitling_descriptor */
644 while (strlen(language) >= 3) {
645 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
653 if (*language != '\0')
656 if (st->codecpar->extradata_size - extradata_copied >= 5) {
657 *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
658 memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
659 extradata_copied += 5;
663 * 0x10 - normal with no monitor aspect ratio criticality
664 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
665 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
666 if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
667 /* support of old 4-byte extradata format */
668 memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
669 extradata_copied += 4;
672 put16(&q, 1); /* composition_page_id */
673 put16(&q, 1); /* ancillary_page_id */
678 *len_ptr = q - len_ptr - 1;
679 } else if (codec_id == AV_CODEC_ID_DVB_TELETEXT) {
680 uint8_t *len_ptr = NULL;
681 int extradata_copied = 0;
683 /* The descriptor tag. teletext_descriptor */
687 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
692 if (*language != '\0')
695 if (st->codecpar->extradata_size - 1 > extradata_copied) {
696 memcpy(q, st->codecpar->extradata + extradata_copied, 2);
697 extradata_copied += 2;
700 /* The Teletext descriptor:
701 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
702 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
703 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
709 *len_ptr = q - len_ptr - 1;
713 case AVMEDIA_TYPE_VIDEO:
714 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
715 put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
716 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
717 put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
718 } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
719 put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
722 case AVMEDIA_TYPE_DATA:
723 if (codec_id == AV_CODEC_ID_SMPTE_KLV) {
724 put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
725 } else if (codec_id == AV_CODEC_ID_TIMED_ID3) {
726 const char *tag = "ID3 ";
727 *q++ = 0x26; /* metadata descriptor */
729 put16(&q, 0xffff); /* metadata application format */
730 putbuf(&q, tag, strlen(tag));
731 *q++ = 0xff; /* metadata format */
732 putbuf(&q, tag, strlen(tag));
733 *q++ = 0; /* metadata service ID */
734 *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
739 val = 0xf000 | (q - desc_length_ptr - 2);
740 desc_length_ptr[0] = val >> 8;
741 desc_length_ptr[1] = val;
745 av_log(s, AV_LOG_ERROR,
746 "The PMT section cannot fit stream %d and all following streams.\n"
747 "Try reducing the number of languages in the audio streams "
748 "or the total number of streams.\n", i);
750 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
755 static void mpegts_write_sdt(AVFormatContext *s)
757 MpegTSWrite *ts = s->priv_data;
758 MpegTSService *service;
759 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
760 int i, running_status, free_ca_mode, val;
763 put16(&q, ts->original_network_id);
765 for (i = 0; i < ts->nb_services; i++) {
766 service = ts->services[i];
767 put16(&q, service->sid);
768 *q++ = 0xfc | 0x00; /* currently no EIT info */
769 desc_list_len_ptr = q;
771 running_status = 4; /* running */
774 /* write only one descriptor for the service name and provider */
778 *q++ = ts->service_type;
779 putbuf(&q, service->provider_name, service->provider_name[0] + 1);
780 putbuf(&q, service->name, service->name[0] + 1);
781 desc_len_ptr[0] = q - desc_len_ptr - 1;
783 /* fill descriptor length */
784 val = (running_status << 13) | (free_ca_mode << 12) |
785 (q - desc_list_len_ptr - 2);
786 desc_list_len_ptr[0] = val >> 8;
787 desc_list_len_ptr[1] = val;
789 mpegts_write_section1(&ts->sdt, SDT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
793 /* This stores a string in buf with the correct encoding and also sets the
794 * first byte as the length. !str is accepted for an empty string.
795 * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
796 * then we keep it as is, otherwise we signal UTF-8 encoding. */
797 static int encode_str8(uint8_t *buf, const char *str)
802 str_len = strlen(str);
803 if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
804 const uint8_t *q = str;
805 int has_multibyte = 0;
808 GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
809 has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
811 if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
813 return AVERROR(EINVAL);
814 buf[0] = str_len + 1;
816 memcpy(&buf[2], str, str_len);
821 /* Otherwise let's just encode the string as is! */
823 return AVERROR(EINVAL);
825 memcpy(&buf[1], str, str_len);
829 static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
831 return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
835 static void write_packet(AVFormatContext *s, const uint8_t *packet)
837 MpegTSWrite *ts = s->priv_data;
839 int64_t pcr = get_pcr(s->priv_data, s->pb);
840 uint32_t tp_extra_header = pcr % 0x3fffffff;
841 tp_extra_header = AV_RB32(&tp_extra_header);
842 avio_write(s->pb, (unsigned char *) &tp_extra_header,
843 sizeof(tp_extra_header));
845 avio_write(s->pb, packet, TS_PACKET_SIZE);
848 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
850 AVFormatContext *ctx = s->opaque;
851 write_packet(ctx, packet);
854 static MpegTSService *mpegts_add_service(AVFormatContext *s, int sid,
855 const AVDictionary *metadata,
858 MpegTSWrite *ts = s->priv_data;
859 MpegTSService *service;
860 AVDictionaryEntry *title, *provider;
861 char default_service_name[32];
862 const char *service_name;
863 const char *provider_name;
865 title = av_dict_get(metadata, "service_name", NULL, 0);
867 title = av_dict_get(metadata, "title", NULL, 0);
868 snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
869 service_name = title ? title->value : default_service_name;
870 provider = av_dict_get(metadata, "service_provider", NULL, 0);
871 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
873 service = av_mallocz(sizeof(MpegTSService));
876 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
878 service->pcr_pid = 0x1fff;
879 if (encode_str8(service->provider_name, provider_name) < 0 ||
880 encode_str8(service->name, service_name) < 0) {
881 av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
884 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
887 service->pmt.write_packet = section_write_packet;
888 service->pmt.opaque = s;
889 service->pmt.cc = 15;
890 service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
891 service->program = program;
899 static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
901 MpegTSWrite *ts = s->priv_data;
902 MpegTSWriteStream *ts_st = pcr_st->priv_data;
904 if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
905 int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
906 ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
908 /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
909 int64_t frame_period = 0;
910 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
911 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
913 av_log(s, AV_LOG_WARNING, "frame size not set\n");
916 frame_period = av_rescale_rnd(frame_size, PCR_TIME_BASE, pcr_st->codecpar->sample_rate, AV_ROUND_UP);
917 } else if (pcr_st->avg_frame_rate.num) {
918 frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
920 if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
921 ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
923 ts_st->pcr_period = 1;
926 // output a PCR as soon as possible
927 ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
930 static void select_pcr_streams(AVFormatContext *s)
932 MpegTSWrite *ts = s->priv_data;
934 for (int i = 0; i < ts->nb_services; i++) {
935 MpegTSService *service = ts->services[i];
936 AVStream *pcr_st = NULL;
937 AVProgram *program = service->program;
938 int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
940 for (int j = 0; j < nb_streams; j++) {
941 AVStream *st = s->streams[program ? program->stream_index[j] : j];
943 pcr_st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
950 MpegTSWriteStream *ts_st = pcr_st->priv_data;
951 service->pcr_pid = ts_st->pid;
952 enable_pcr_generation_for_stream(s, pcr_st);
953 av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
954 service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
959 static int mpegts_init(AVFormatContext *s)
961 MpegTSWrite *ts = s->priv_data;
965 if (ts->m2ts_mode == -1) {
966 if (av_match_ext(s->url, "m2ts")) {
973 ts->m2ts_video_pid = M2TS_VIDEO_PID;
974 ts->m2ts_audio_pid = M2TS_AUDIO_START_PID;
975 ts->m2ts_pgssub_pid = M2TS_PGSSUB_START_PID;
976 ts->m2ts_textsub_pid = M2TS_TEXTSUB_PID;
979 ts->pmt_start_pid = M2TS_PMT_PID;
980 if (s->nb_programs > 1) {
981 av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
982 return AVERROR(EINVAL);
986 if (s->max_delay < 0) /* Not set by the caller */
989 // round up to a whole number of TS packets
990 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
992 if (!s->nb_programs) {
993 /* allocate a single DVB service */
994 if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
995 return AVERROR(ENOMEM);
997 for (i = 0; i < s->nb_programs; i++) {
998 AVProgram *program = s->programs[i];
999 if (!mpegts_add_service(s, program->id, program->metadata, program))
1000 return AVERROR(ENOMEM);
1004 ts->pat.pid = PAT_PID;
1005 /* Initialize at 15 so that it wraps and is equal to 0 for the
1006 * first packet we write. */
1008 ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1009 ts->pat.write_packet = section_write_packet;
1012 ts->sdt.pid = SDT_PID;
1014 ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1015 ts->sdt.write_packet = section_write_packet;
1018 /* assign pids to each stream */
1019 for (i = 0; i < s->nb_streams; i++) {
1020 AVStream *st = s->streams[i];
1021 MpegTSWriteStream *ts_st;
1023 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
1025 return AVERROR(ENOMEM);
1027 st->priv_data = ts_st;
1029 avpriv_set_pts_info(st, 33, 1, 90000);
1031 ts_st->payload = av_mallocz(ts->pes_payload_size);
1032 if (!ts_st->payload) {
1033 return AVERROR(ENOMEM);
1036 /* MPEG pid values < 16 are reserved. Applications which set st->id in
1037 * this range are assigned a calculated pid. */
1039 if (ts->m2ts_mode) {
1040 switch (st->codecpar->codec_type) {
1041 case AVMEDIA_TYPE_VIDEO:
1042 ts_st->pid = ts->m2ts_video_pid++;
1044 case AVMEDIA_TYPE_AUDIO:
1045 ts_st->pid = ts->m2ts_audio_pid++;
1047 case AVMEDIA_TYPE_SUBTITLE:
1048 switch (st->codecpar->codec_id) {
1049 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
1050 ts_st->pid = ts->m2ts_pgssub_pid++;
1052 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
1053 ts_st->pid = ts->m2ts_textsub_pid++;
1058 if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1059 ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1060 ts->m2ts_pgssub_pid > M2TS_PGSSUB_START_PID + 32 ||
1061 ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1063 av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1064 return AVERROR(EINVAL);
1067 ts_st->pid = ts->start_pid + i;
1070 ts_st->pid = st->id;
1072 if (ts_st->pid >= 0x1FFF) {
1073 av_log(s, AV_LOG_ERROR,
1074 "Invalid stream id %d, must be less than 8191\n", st->id);
1075 return AVERROR(EINVAL);
1077 for (j = 0; j < ts->nb_services; j++) {
1078 if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1079 av_log(s, AV_LOG_ERROR,
1080 "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1081 return AVERROR(EINVAL);
1083 if (ts_st->pid == ts->services[j]->pmt.pid) {
1084 av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1085 return AVERROR(EINVAL);
1088 for (j = 0; j < i; j++) {
1089 MpegTSWriteStream *ts_st_prev = s->streams[j]->priv_data;
1090 if (ts_st_prev->pid == ts_st->pid) {
1091 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1092 return AVERROR(EINVAL);
1095 ts_st->payload_pts = AV_NOPTS_VALUE;
1096 ts_st->payload_dts = AV_NOPTS_VALUE;
1097 ts_st->first_pts_check = 1;
1099 ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1100 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1101 st->codecpar->extradata_size > 0) {
1103 ts_st->amux = avformat_alloc_context();
1105 return AVERROR(ENOMEM);
1107 ts_st->amux->oformat =
1108 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1110 if (!ts_st->amux->oformat) {
1111 return AVERROR(EINVAL);
1113 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1114 return AVERROR(ENOMEM);
1116 ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1119 ast->time_base = st->time_base;
1120 ret = avformat_write_header(ts_st->amux, NULL);
1124 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1125 ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
1130 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1132 select_pcr_streams(s);
1134 ts->last_pat_ts = AV_NOPTS_VALUE;
1135 ts->last_sdt_ts = AV_NOPTS_VALUE;
1136 ts->pat_period = av_rescale(ts->pat_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1137 ts->sdt_period = av_rescale(ts->sdt_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1139 if (ts->mux_rate == 1)
1140 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1142 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1143 av_log(s, AV_LOG_VERBOSE,
1144 "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms\n",
1145 av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1146 av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1151 /* send SDT, PAT and PMT tables regularly */
1152 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int64_t pcr)
1154 MpegTSWrite *ts = s->priv_data;
1157 if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1158 (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1161 if (pcr != AV_NOPTS_VALUE)
1162 ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1163 mpegts_write_sdt(s);
1165 if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1166 (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1168 if (pcr != AV_NOPTS_VALUE)
1169 ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1170 mpegts_write_pat(s);
1171 for (i = 0; i < ts->nb_services; i++)
1172 mpegts_write_pmt(s, ts->services[i]);
1176 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1178 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1180 *buf++ = pcr_high >> 25;
1181 *buf++ = pcr_high >> 17;
1182 *buf++ = pcr_high >> 9;
1183 *buf++ = pcr_high >> 1;
1184 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1190 /* Write a single null transport stream packet */
1191 static void mpegts_insert_null_packet(AVFormatContext *s)
1194 uint8_t buf[TS_PACKET_SIZE];
1201 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1202 write_packet(s, buf);
1205 /* Write a single transport stream packet with a PCR and no payload */
1206 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1208 MpegTSWrite *ts = s->priv_data;
1209 MpegTSWriteStream *ts_st = st->priv_data;
1211 uint8_t buf[TS_PACKET_SIZE];
1215 *q++ = ts_st->pid >> 8;
1217 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1218 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1219 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1220 *q++ = 0x10; /* Adaptation flags: PCR present */
1221 if (ts_st->discontinuity) {
1223 ts_st->discontinuity = 0;
1226 /* PCR coded into 6 bytes */
1227 q += write_pcr_bits(q, get_pcr(ts, s->pb));
1229 /* stuffing bytes */
1230 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1231 write_packet(s, buf);
1234 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1238 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1240 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1243 val = (((pts) & 0x7fff) << 1) | 1;
1248 /* Set an adaptation field flag in an MPEG-TS packet*/
1249 static void set_af_flag(uint8_t *pkt, int flag)
1251 // expect at least one flag to set
1254 if ((pkt[3] & 0x20) == 0) {
1255 // no AF yet, set adaptation field flag
1257 // 1 byte length, no flags
1264 /* Extend the adaptation field by size bytes */
1265 static void extend_af(uint8_t *pkt, int size)
1267 // expect already existing adaptation field
1268 av_assert0(pkt[3] & 0x20);
1272 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1273 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1276 return pkt + 5 + pkt[4];
1281 /* Add a PES header to the front of the payload, and segment into an integer
1282 * number of TS packets. The final TS packet is padded using an oversized
1283 * adaptation header to exactly fill the last TS packet.
1284 * NOTE: 'payload' contains a complete PES payload. */
1285 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1286 const uint8_t *payload, int payload_size,
1287 int64_t pts, int64_t dts, int key, int stream_id)
1289 MpegTSWriteStream *ts_st = st->priv_data;
1290 MpegTSWrite *ts = s->priv_data;
1291 uint8_t buf[TS_PACKET_SIZE];
1293 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1294 int afc_len, stuffing_len;
1295 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1296 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1299 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1300 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1304 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1307 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1311 while (payload_size > 0) {
1312 int64_t pcr = AV_NOPTS_VALUE;
1313 if (ts->mux_rate > 1)
1314 pcr = get_pcr(ts, s->pb);
1315 else if (dts != AV_NOPTS_VALUE)
1316 pcr = (dts - delay) * 300;
1318 retransmit_si_info(s, force_pat, force_sdt, pcr);
1323 if (ts->mux_rate > 1) {
1324 /* Send PCR packets for all PCR streams if needed */
1325 pcr = get_pcr(ts, s->pb);
1326 if (pcr >= ts->next_pcr) {
1327 int64_t next_pcr = INT64_MAX;
1328 for (int i = 0; i < s->nb_streams; i++) {
1329 /* Make the current stream the last, because for that we
1330 * can insert the pcr into the payload later */
1331 int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1332 AVStream *st2 = s->streams[st2_index];
1333 MpegTSWriteStream *ts_st2 = st2->priv_data;
1334 if (ts_st2->pcr_period) {
1335 if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1336 ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1338 mpegts_insert_pcr_only(s, st2);
1339 pcr = get_pcr(ts, s->pb);
1344 next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1347 ts->next_pcr = next_pcr;
1349 if (dts != AV_NOPTS_VALUE && (dts - pcr / 300) > delay) {
1350 /* pcr insert gets priority over null packet insert */
1352 mpegts_insert_pcr_only(s, st);
1354 mpegts_insert_null_packet(s);
1355 /* recalculate write_pcr and possibly retransmit si_info */
1358 } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1359 if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1360 ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1365 /* prepare packet header */
1368 val = ts_st->pid >> 8;
1369 if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1375 ts_st->cc = ts_st->cc + 1 & 0xf;
1376 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1377 if (ts_st->discontinuity) {
1378 set_af_flag(buf, 0x80);
1379 q = get_ts_payload_start(buf);
1380 ts_st->discontinuity = 0;
1382 if (key && is_start && pts != AV_NOPTS_VALUE) {
1383 // set Random Access for key frames
1384 if (ts_st->pcr_period)
1386 set_af_flag(buf, 0x40);
1387 q = get_ts_payload_start(buf);
1390 set_af_flag(buf, 0x10);
1391 q = get_ts_payload_start(buf);
1392 // add 11, pcr references the last byte of program clock reference base
1393 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1394 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1395 extend_af(buf, write_pcr_bits(q, pcr));
1396 q = get_ts_payload_start(buf);
1399 int pes_extension = 0;
1400 int pes_header_stuffing_bytes = 0;
1401 /* write PES header */
1405 is_dvb_subtitle = 0;
1406 is_dvb_teletext = 0;
1407 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1408 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1409 *q++ = STREAM_ID_EXTENDED_STREAM_ID;
1411 *q++ = STREAM_ID_VIDEO_STREAM_0;
1412 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1413 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1414 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1415 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1416 *q++ = STREAM_ID_AUDIO_STREAM_0;
1417 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1418 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1420 *q++ = STREAM_ID_EXTENDED_STREAM_ID;
1421 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1422 st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
1423 *q++ = STREAM_ID_PRIVATE_STREAM_1;
1424 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1425 *q++ = stream_id != -1 ? stream_id : STREAM_ID_METADATA_STREAM;
1427 if (stream_id == STREAM_ID_PRIVATE_STREAM_1) /* asynchronous KLV */
1428 pts = dts = AV_NOPTS_VALUE;
1430 *q++ = STREAM_ID_PRIVATE_STREAM_1;
1431 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1432 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1433 is_dvb_subtitle = 1;
1434 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1435 is_dvb_teletext = 1;
1441 if (pts != AV_NOPTS_VALUE) {
1445 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1449 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1450 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1451 /* set PES_extension_flag */
1455 /* One byte for PES2 extension flag +
1456 * one byte for extension length +
1457 * one byte for extension id */
1460 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1461 * otherwise it will not play sound on blu-ray
1463 if (ts->m2ts_mode &&
1464 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1465 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1466 /* set PES_extension_flag */
1471 if (is_dvb_teletext) {
1472 pes_header_stuffing_bytes = 0x24 - header_len;
1475 len = payload_size + header_len + 3;
1476 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1477 if (is_dvb_subtitle) {
1483 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1489 /* data alignment indicator is required for subtitle and data streams */
1490 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1495 if (pts != AV_NOPTS_VALUE) {
1496 write_pts(q, flags >> 6, pts);
1499 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1500 write_pts(q, 1, dts);
1503 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1504 flags = 0x01; /* set PES_extension_flag_2 */
1506 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1507 /* Set the stream ID extension flag bit to 0 and
1508 * write the extended stream ID. */
1511 /* For Blu-ray AC3 Audio Setting extended flags */
1512 if (ts->m2ts_mode &&
1514 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1515 flags = 0x01; /* set PES_extension_flag_2 */
1517 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1518 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1522 if (is_dvb_subtitle) {
1523 /* First two fields of DVB subtitles PES data:
1524 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1525 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1529 if (is_dvb_teletext) {
1530 memset(q, 0xff, pes_header_stuffing_bytes);
1531 q += pes_header_stuffing_bytes;
1536 header_len = q - buf;
1538 len = TS_PACKET_SIZE - header_len;
1539 if (len > payload_size)
1541 stuffing_len = TS_PACKET_SIZE - header_len - len;
1542 if (stuffing_len > 0) {
1543 /* add stuffing with AFC */
1544 if (buf[3] & 0x20) {
1545 /* stuffing already present: increase its size */
1546 afc_len = buf[4] + 1;
1547 memmove(buf + 4 + afc_len + stuffing_len,
1549 header_len - (4 + afc_len));
1550 buf[4] += stuffing_len;
1551 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1554 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1556 buf[4] = stuffing_len - 1;
1557 if (stuffing_len >= 2) {
1559 memset(buf + 6, 0xff, stuffing_len - 2);
1564 if (is_dvb_subtitle && payload_size == len) {
1565 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1566 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1568 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1572 payload_size -= len;
1573 write_packet(s, buf);
1575 ts_st->prev_payload_key = key;
1578 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1580 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1581 if (!st->nb_frames) {
1582 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1583 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1584 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1585 return AVERROR_INVALIDDATA;
1587 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1589 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1590 av_log(s, AV_LOG_WARNING, "\n");
1595 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1597 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1598 if (!st->nb_frames) {
1599 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1600 return AVERROR_PATCHWELCOME;
1602 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1604 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1605 av_log(s, AV_LOG_WARNING, "\n");
1610 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1611 * Released under the LGPL v2.1+, written by
1612 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1614 static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1616 static const int durations[32] = {
1617 480, 960, 1920, 2880, /* Silk NB */
1618 480, 960, 1920, 2880, /* Silk MB */
1619 480, 960, 1920, 2880, /* Silk WB */
1620 480, 960, /* Hybrid SWB */
1621 480, 960, /* Hybrid FB */
1622 120, 240, 480, 960, /* CELT NB */
1623 120, 240, 480, 960, /* CELT NB */
1624 120, 240, 480, 960, /* CELT NB */
1625 120, 240, 480, 960, /* CELT NB */
1627 int toc, frame_duration, nframes, duration;
1634 frame_duration = durations[toc >> 3];
1648 nframes = pkt->data[1] & 63;
1652 duration = nframes * frame_duration;
1653 if (duration > 5760) {
1654 av_log(s, AV_LOG_WARNING,
1655 "Opus packet duration > 120 ms, invalid");
1662 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1664 AVStream *st = s->streams[pkt->stream_index];
1665 int size = pkt->size;
1666 uint8_t *buf = pkt->data;
1667 uint8_t *data = NULL;
1668 MpegTSWrite *ts = s->priv_data;
1669 MpegTSWriteStream *ts_st = st->priv_data;
1670 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1671 const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1672 int64_t dts = pkt->dts, pts = pkt->pts;
1673 int opus_samples = 0;
1675 uint8_t *side_data = NULL;
1678 side_data = av_packet_get_side_data(pkt,
1679 AV_PKT_DATA_MPEGTS_STREAM_ID,
1682 stream_id = side_data[0];
1684 if (ts->copyts < 1) {
1685 if (pts != AV_NOPTS_VALUE)
1687 if (dts != AV_NOPTS_VALUE)
1691 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
1692 av_log(s, AV_LOG_ERROR, "first pts value must be set\n");
1693 return AVERROR_INVALIDDATA;
1695 ts_st->first_pts_check = 0;
1697 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1698 const uint8_t *p = buf, *buf_end = p + size;
1699 uint32_t state = -1;
1700 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1701 int ret = ff_check_h264_startcode(s, st, pkt);
1705 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1709 p = avpriv_find_start_code(p, buf_end, &state);
1710 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", state & 0x1f);
1711 if ((state & 0x1f) == 7)
1713 } while (p < buf_end && (state & 0x1f) != 9 &&
1714 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1716 if ((state & 0x1f) != 5)
1718 if ((state & 0x1f) != 9) { // AUD NAL
1719 data = av_malloc(pkt->size + 6 + extradd);
1721 return AVERROR(ENOMEM);
1722 memcpy(data + 6, st->codecpar->extradata, extradd);
1723 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1724 AV_WB32(data, 0x00000001);
1726 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1728 size = pkt->size + 6 + extradd;
1730 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1731 if (pkt->size < 2) {
1732 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1733 return AVERROR_INVALIDDATA;
1735 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1740 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1741 "and extradata missing\n");
1743 av_init_packet(&pkt2);
1744 pkt2.data = pkt->data;
1745 pkt2.size = pkt->size;
1746 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1747 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1749 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1753 ret = av_write_frame(ts_st->amux, &pkt2);
1755 ffio_free_dyn_buf(&ts_st->amux->pb);
1758 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1759 ts_st->amux->pb = NULL;
1763 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1764 const uint8_t *p = buf, *buf_end = p + size;
1765 uint32_t state = -1;
1766 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1767 int ret = check_hevc_startcode(s, st, pkt);
1771 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1775 p = avpriv_find_start_code(p, buf_end, &state);
1776 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", (state & 0x7e)>>1);
1777 if ((state & 0x7e) == 2*32)
1779 } while (p < buf_end && (state & 0x7e) != 2*35 &&
1780 (state & 0x7e) >= 2*32);
1782 if ((state & 0x7e) < 2*16 || (state & 0x7e) >= 2*24)
1784 if ((state & 0x7e) != 2*35) { // AUD NAL
1785 data = av_malloc(pkt->size + 7 + extradd);
1787 return AVERROR(ENOMEM);
1788 memcpy(data + 7, st->codecpar->extradata, extradd);
1789 memcpy(data + 7 + extradd, pkt->data, pkt->size);
1790 AV_WB32(data, 0x00000001);
1793 data[6] = 0x50; // any slice type (0x4) + rbsp stop one bit
1795 size = pkt->size + 7 + extradd;
1797 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1798 if (pkt->size < 2) {
1799 av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1800 return AVERROR_INVALIDDATA;
1803 /* Add Opus control header */
1804 if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1808 int ctrl_header_size;
1809 int trim_start = 0, trim_end = 0;
1811 opus_samples = opus_get_packet_samples(s, pkt);
1813 side_data = av_packet_get_side_data(pkt,
1814 AV_PKT_DATA_SKIP_SAMPLES,
1817 if (side_data && side_data_size >= 10) {
1818 trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
1821 ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1822 if (ts_st->opus_pending_trim_start)
1823 ctrl_header_size += 2;
1825 ctrl_header_size += 2;
1827 data = av_malloc(ctrl_header_size);
1829 return AVERROR(ENOMEM);
1833 if (ts_st->opus_pending_trim_start)
1841 data[i] = FFMIN(n, 255);
1846 av_assert0(2 + pkt->size / 255 + 1 == i);
1848 if (ts_st->opus_pending_trim_start) {
1849 trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1850 AV_WB16(data + i, trim_start);
1852 ts_st->opus_pending_trim_start -= trim_start;
1855 trim_end = FFMIN(trim_end, opus_samples - trim_start);
1856 AV_WB16(data + i, trim_end);
1860 memcpy(data + i, pkt->data, pkt->size);
1862 size = ctrl_header_size;
1864 /* TODO: Can we get TS formatted data here? If so we will
1865 * need to count the samples of that too! */
1866 av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1868 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3 && !ts_st->dvb_ac3_desc) {
1869 AC3HeaderInfo *hdr = NULL;
1871 if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) >= 0) {
1872 uint8_t number_of_channels_flag;
1873 uint8_t service_type_flag;
1874 uint8_t full_service_flag = 1;
1875 DVBAC3Descriptor *dvb_ac3_desc;
1877 dvb_ac3_desc = av_mallocz(sizeof(*dvb_ac3_desc));
1878 if (!dvb_ac3_desc) {
1880 return AVERROR(ENOMEM);
1883 service_type_flag = hdr->bitstream_mode;
1884 switch (hdr->channel_mode) {
1885 case AC3_CHMODE_DUALMONO:
1886 number_of_channels_flag = 1;
1888 case AC3_CHMODE_MONO:
1889 number_of_channels_flag = 0;
1891 case AC3_CHMODE_STEREO:
1892 if (hdr->dolby_surround_mode == AC3_DSURMOD_ON)
1893 number_of_channels_flag = 3;
1895 number_of_channels_flag = 2;
1898 case AC3_CHMODE_2F1R:
1899 case AC3_CHMODE_3F1R:
1900 case AC3_CHMODE_2F2R:
1901 case AC3_CHMODE_3F2R:
1902 number_of_channels_flag = 4;
1904 default: /* reserved */
1905 number_of_channels_flag = 7;
1909 if (service_type_flag == 1 || service_type_flag == 4 ||
1910 (service_type_flag == 7 && !number_of_channels_flag))
1911 full_service_flag = 0;
1913 dvb_ac3_desc->component_type_flag = 1;
1914 dvb_ac3_desc->component_type = (full_service_flag << 6) |
1915 ((service_type_flag & 0x7) << 3) |
1916 (number_of_channels_flag & 0x7);
1917 dvb_ac3_desc->bsid_flag = 1;
1918 dvb_ac3_desc->bsid = hdr->bitstream_id;
1919 dvb_ac3_desc->mainid_flag = 0;
1920 dvb_ac3_desc->asvc_flag = 0;
1922 ts_st->dvb_ac3_desc = dvb_ac3_desc;
1927 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1928 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1929 dts - ts_st->payload_dts >= max_audio_delay) ||
1930 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1931 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1932 ts_st->payload_pts, ts_st->payload_dts,
1933 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1934 ts_st->payload_size = 0;
1935 ts_st->opus_queued_samples = 0;
1938 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1939 av_assert0(!ts_st->payload_size);
1940 // for video and subtitle, write a single pes packet
1941 mpegts_write_pes(s, st, buf, size, pts, dts,
1942 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
1943 ts_st->opus_queued_samples = 0;
1948 if (!ts_st->payload_size) {
1949 ts_st->payload_pts = pts;
1950 ts_st->payload_dts = dts;
1951 ts_st->payload_flags = pkt->flags;
1954 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1955 ts_st->payload_size += size;
1956 ts_st->opus_queued_samples += opus_samples;
1963 static void mpegts_write_flush(AVFormatContext *s)
1965 MpegTSWrite *ts = s->priv_data;
1968 /* flush current packets */
1969 for (i = 0; i < s->nb_streams; i++) {
1970 AVStream *st = s->streams[i];
1971 MpegTSWriteStream *ts_st = st->priv_data;
1972 if (ts_st->payload_size > 0) {
1973 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1974 ts_st->payload_pts, ts_st->payload_dts,
1975 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
1976 ts_st->payload_size = 0;
1977 ts_st->opus_queued_samples = 0;
1981 if (ts->m2ts_mode) {
1982 int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
1983 while (packets++ < 32)
1984 mpegts_insert_null_packet(s);
1988 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
1991 mpegts_write_flush(s);
1994 return mpegts_write_packet_internal(s, pkt);
1998 static int mpegts_write_end(AVFormatContext *s)
2001 mpegts_write_flush(s);
2006 static void mpegts_deinit(AVFormatContext *s)
2008 MpegTSWrite *ts = s->priv_data;
2009 MpegTSService *service;
2012 for (i = 0; i < s->nb_streams; i++) {
2013 AVStream *st = s->streams[i];
2014 MpegTSWriteStream *ts_st = st->priv_data;
2016 av_freep(&ts_st->dvb_ac3_desc);
2017 av_freep(&ts_st->payload);
2019 avformat_free_context(ts_st->amux);
2025 for (i = 0; i < ts->nb_services; i++) {
2026 service = ts->services[i];
2029 av_freep(&ts->services);
2032 static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2035 AVStream *st = s->streams[pkt->stream_index];
2037 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2038 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2039 (AV_RB24(pkt->data) != 0x000001 ||
2040 (st->codecpar->extradata_size > 0 &&
2041 st->codecpar->extradata[0] == 1)))
2042 ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
2043 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
2044 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2045 (AV_RB24(pkt->data) != 0x000001 ||
2046 (st->codecpar->extradata_size > 0 &&
2047 st->codecpar->extradata[0] == 1)))
2048 ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
2054 #define OFFSET(x) offsetof(MpegTSWrite, x)
2055 #define ENC AV_OPT_FLAG_ENCODING_PARAM
2056 static const AVOption options[] = {
2057 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
2058 OFFSET(transport_stream_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2059 { "mpegts_original_network_id", "Set original_network_id field.",
2060 OFFSET(original_network_id), AV_OPT_TYPE_INT, { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, ENC },
2061 { "mpegts_service_id", "Set service_id field.",
2062 OFFSET(service_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2063 { "mpegts_service_type", "Set service_type field.",
2064 OFFSET(service_type), AV_OPT_TYPE_INT, { .i64 = 0x01 }, 0x01, 0xff, ENC, "mpegts_service_type" },
2065 { "digital_tv", "Digital Television.",
2066 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2067 { "digital_radio", "Digital Radio.",
2068 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2069 { "teletext", "Teletext.",
2070 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff, ENC, "mpegts_service_type" },
2071 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
2072 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2073 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
2074 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2075 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
2076 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2077 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
2078 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2079 { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2080 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2081 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2082 OFFSET(pmt_start_pid), AV_OPT_TYPE_INT, { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2083 { "mpegts_start_pid", "Set the first pid.",
2084 OFFSET(start_pid), AV_OPT_TYPE_INT, { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2085 { "mpegts_m2ts_mode", "Enable m2ts mode.", OFFSET(m2ts_mode), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2086 { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
2087 { "pes_payload_size", "Minimum PES packet payload in bytes",
2088 OFFSET(pes_payload_size), AV_OPT_TYPE_INT, { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, ENC },
2089 { "mpegts_flags", "MPEG-TS muxing flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, ENC, "mpegts_flags" },
2090 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2091 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX, ENC, "mpegts_flags" },
2092 { "latm", "Use LATM packetization for AAC",
2093 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX, ENC, "mpegts_flags" },
2094 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2095 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX, ENC, "mpegts_flags" },
2096 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2097 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX, ENC, "mpegts_flags" },
2098 { "initial_discontinuity", "Mark initial packets as discontinuous",
2099 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX, ENC, "mpegts_flags" },
2100 { "mpegts_copyts", "don't offset dts/pts", OFFSET(copyts), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2101 { "tables_version", "set PAT, PMT and SDT version", OFFSET(tables_version), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 31, ENC },
2102 { "omit_video_pes_length", "Omit the PES packet length for video packets",
2103 OFFSET(omit_video_pes_length), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
2104 { "pcr_period", "PCR retransmission time in milliseconds",
2105 OFFSET(pcr_period_ms), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC },
2106 { "pat_period", "PAT/PMT retransmission time limit in seconds",
2107 OFFSET(pat_period_us), AV_OPT_TYPE_DURATION, { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2108 { "sdt_period", "SDT retransmission time limit in seconds",
2109 OFFSET(sdt_period_us), AV_OPT_TYPE_DURATION, { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2113 static const AVClass mpegts_muxer_class = {
2114 .class_name = "MPEGTS muxer",
2115 .item_name = av_default_item_name,
2117 .version = LIBAVUTIL_VERSION_INT,
2120 AVOutputFormat ff_mpegts_muxer = {
2122 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2123 .mime_type = "video/MP2T",
2124 .extensions = "ts,m2t,m2ts,mts",
2125 .priv_data_size = sizeof(MpegTSWrite),
2126 .audio_codec = AV_CODEC_ID_MP2,
2127 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
2128 .init = mpegts_init,
2129 .write_packet = mpegts_write_packet,
2130 .write_trailer = mpegts_write_end,
2131 .deinit = mpegts_deinit,
2132 .check_bitstream = mpegts_check_bitstream,
2133 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2134 .priv_class = &mpegts_muxer_class,