2 * MPEG2 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/internal.h"
33 #include "avio_internal.h"
37 #define PCR_TIME_BASE 27000000
39 /* write DVB SI sections */
41 /*********************************************/
42 /* mpegts section writer */
44 typedef struct MpegTSSection {
47 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
51 typedef struct MpegTSService {
52 MpegTSSection pmt; /* MPEG2 pmt table context */
53 int sid; /* service ID */
58 int pcr_packet_period;
62 // service_type values as defined in ETSI 300 468
64 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
65 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
66 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
67 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
68 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
69 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
70 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19
72 typedef struct MpegTSWrite {
73 const AVClass *av_class;
74 MpegTSSection pat; /* MPEG2 pat table */
75 MpegTSSection sdt; /* MPEG2 sdt table context */
76 MpegTSService **services;
78 int sdt_packet_period;
80 int pat_packet_period;
85 int mux_rate; ///< set to 1 when VBR
88 int transport_stream_id;
89 int original_network_id;
97 int reemit_pat_pmt; // backward compatibility
100 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
101 #define MPEGTS_FLAG_AAC_LATM 0x02
102 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
103 #define MPEGTS_FLAG_SYSTEM_B 0x08
112 int omit_video_pes_length;
115 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
116 #define DEFAULT_PES_HEADER_FREQ 16
117 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
119 /* The section length is 12 bits. The first 2 are set to 0, the remaining
120 * 10 bits should not exceed 1021. */
121 #define SECTION_LENGTH 1020
123 /* NOTE: 4 bytes must be left at the end for the crc32 */
124 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
127 unsigned char packet[TS_PACKET_SIZE];
128 const unsigned char *buf_ptr;
130 int first, b, len1, left;
132 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
135 buf[len - 4] = (crc >> 24) & 0xff;
136 buf[len - 3] = (crc >> 16) & 0xff;
137 buf[len - 2] = (crc >> 8) & 0xff;
138 buf[len - 1] = crc & 0xff;
140 /* send each packet */
143 first = buf == buf_ptr;
151 s->cc = s->cc + 1 & 0xf;
154 *q++ = 0; /* 0 offset */
155 len1 = TS_PACKET_SIZE - (q - packet);
158 memcpy(q, buf_ptr, len1);
160 /* add known padding data */
161 left = TS_PACKET_SIZE - (q - packet);
163 memset(q, 0xff, left);
165 s->write_packet(s, packet);
172 static inline void put16(uint8_t **q_ptr, int val)
181 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
182 int version, int sec_num, int last_sec_num,
183 uint8_t *buf, int len)
185 uint8_t section[1024], *q;
186 unsigned int tot_len;
187 /* reserved_future_use field must be set to 1 for SDT */
188 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
190 tot_len = 3 + 5 + len + 4;
191 /* check if not too big */
193 return AVERROR_INVALIDDATA;
197 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
199 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
204 mpegts_write_section(s, section, tot_len);
208 /*********************************************/
211 #define DEFAULT_PROVIDER_NAME "FFmpeg"
212 #define DEFAULT_SERVICE_NAME "Service01"
214 /* we retransmit the SI info at this rate */
215 #define SDT_RETRANS_TIME 500
216 #define PAT_RETRANS_TIME 100
217 #define PCR_RETRANS_TIME 20
219 typedef struct MpegTSWriteStream {
220 struct MpegTSService *service;
221 int pid; /* stream associated pid */
224 int first_pts_check; ///< first pts check needed
225 int prev_payload_key;
230 AVFormatContext *amux;
234 int opus_queued_samples;
235 int opus_pending_trim_start;
238 static void mpegts_write_pat(AVFormatContext *s)
240 MpegTSWrite *ts = s->priv_data;
241 MpegTSService *service;
242 uint8_t data[SECTION_LENGTH], *q;
246 for (i = 0; i < ts->nb_services; i++) {
247 service = ts->services[i];
248 put16(&q, service->sid);
249 put16(&q, 0xe000 | service->pmt.pid);
251 mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, ts->tables_version, 0, 0,
255 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
257 MpegTSWrite *ts = s->priv_data;
258 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
259 int val, stream_type, i, err = 0;
262 put16(&q, 0xe000 | service->pcr_pid);
264 program_info_length_ptr = q;
265 q += 2; /* patched after */
267 /* put program info here */
269 val = 0xf000 | (q - program_info_length_ptr - 2);
270 program_info_length_ptr[0] = val >> 8;
271 program_info_length_ptr[1] = val;
273 for (i = 0; i < s->nb_streams; i++) {
274 AVStream *st = s->streams[i];
275 MpegTSWriteStream *ts_st = st->priv_data;
276 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
278 if (s->nb_programs) {
280 AVProgram *program = service->program;
282 for (k = 0; k < program->nb_stream_indexes; k++)
283 if (program->stream_index[k] == i) {
292 if (q - data > SECTION_LENGTH - 32) {
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 stream_type = STREAM_TYPE_AUDIO_MPEG1;
323 case AV_CODEC_ID_AAC:
324 stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
325 ? STREAM_TYPE_AUDIO_AAC_LATM
326 : STREAM_TYPE_AUDIO_AAC;
328 case AV_CODEC_ID_AAC_LATM:
329 stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
331 case AV_CODEC_ID_AC3:
332 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
333 ? STREAM_TYPE_PRIVATE_DATA
334 : STREAM_TYPE_AUDIO_AC3;
336 case AV_CODEC_ID_EAC3:
337 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
338 ? STREAM_TYPE_PRIVATE_DATA
339 : STREAM_TYPE_AUDIO_EAC3;
341 case AV_CODEC_ID_DTS:
342 stream_type = STREAM_TYPE_AUDIO_DTS;
344 case AV_CODEC_ID_TRUEHD:
345 stream_type = STREAM_TYPE_AUDIO_TRUEHD;
347 case AV_CODEC_ID_OPUS:
348 stream_type = STREAM_TYPE_PRIVATE_DATA;
351 stream_type = STREAM_TYPE_PRIVATE_DATA;
356 put16(&q, 0xe000 | ts_st->pid);
358 q += 2; /* patched after */
360 /* write optional descriptors here */
361 switch (st->codecpar->codec_type) {
362 case AVMEDIA_TYPE_AUDIO:
363 if (st->codecpar->codec_id==AV_CODEC_ID_AC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
364 *q++=0x6a; // AC3 descriptor see A038 DVB SI
365 *q++=1; // 1 byte, all flags sets to 0
366 *q++=0; // omit all fields...
368 if (st->codecpar->codec_id==AV_CODEC_ID_EAC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
369 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
370 *q++=1; // 1 byte, all flags sets to 0
371 *q++=0; // omit all fields...
373 if (st->codecpar->codec_id==AV_CODEC_ID_S302M) {
374 *q++ = 0x05; /* MPEG-2 registration descriptor*/
381 if (st->codecpar->codec_id==AV_CODEC_ID_OPUS) {
382 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
383 if (q - data > SECTION_LENGTH - 6 - 4) {
388 *q++ = 0x05; /* MPEG-2 registration descriptor*/
395 *q++ = 0x7f; /* DVB extension descriptor */
399 if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
400 if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) {
401 /* RTP mapping family */
402 *q++ = st->codecpar->channels;
403 } else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
404 st->codecpar->extradata_size >= 21 + st->codecpar->channels) {
405 static const uint8_t coupled_stream_counts[9] = {
406 1, 0, 1, 1, 2, 2, 2, 3, 3
408 static const uint8_t channel_map_a[8][8] = {
415 {0, 4, 1, 2, 3, 5, 6},
416 {0, 6, 1, 2, 3, 4, 5, 7},
418 static const uint8_t channel_map_b[8][8] = {
425 {0, 1, 2, 3, 4, 5, 6},
426 {0, 1, 2, 3, 4, 5, 6, 7},
428 /* Vorbis mapping family */
430 if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
431 st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
432 memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
433 *q++ = st->codecpar->channels;
434 } else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
435 st->codecpar->extradata[20] == 0 &&
436 memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
437 *q++ = st->codecpar->channels | 0x80;
439 /* Unsupported, could write an extended descriptor here */
440 av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
445 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
448 } else if (st->codecpar->channels <= 2) {
449 /* Assume RTP mapping family */
450 *q++ = st->codecpar->channels;
453 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
460 char *next = lang->value;
463 *q++ = 0x0a; /* ISO 639 language descriptor */
467 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
468 if (q - data > SECTION_LENGTH - 4) {
472 next = strchr(p, ',');
473 if (strlen(p) != 3 && (!next || next != p + 3))
474 continue; /* not a 3-letter code */
480 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
482 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
484 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
487 *q++ = 0; /* undefined type */
493 q -= 2; /* no language codes were written */
496 case AVMEDIA_TYPE_SUBTITLE:
498 const char default_language[] = "und";
499 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
501 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
503 int extradata_copied = 0;
505 *q++ = 0x59; /* subtitling_descriptor */
508 while (strlen(language) >= 3) {
509 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
517 if (*language != '\0')
520 if (st->codecpar->extradata_size - extradata_copied >= 5) {
521 *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
522 memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
523 extradata_copied += 5;
527 * 0x10 - normal with no monitor aspect ratio criticality
528 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
529 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
530 if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
531 /* support of old 4-byte extradata format */
532 memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
533 extradata_copied += 4;
536 put16(&q, 1); /* composition_page_id */
537 put16(&q, 1); /* ancillary_page_id */
542 *len_ptr = q - len_ptr - 1;
543 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
544 uint8_t *len_ptr = NULL;
545 int extradata_copied = 0;
547 /* The descriptor tag. teletext_descriptor */
551 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
556 if (*language != '\0')
559 if (st->codecpar->extradata_size - 1 > extradata_copied) {
560 memcpy(q, st->codecpar->extradata + extradata_copied, 2);
561 extradata_copied += 2;
564 /* The Teletext descriptor:
565 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
566 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
567 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
573 *len_ptr = q - len_ptr - 1;
577 case AVMEDIA_TYPE_VIDEO:
578 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
579 *q++ = 0x05; /*MPEG-2 registration descriptor*/
585 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
586 *q++ = 0x05; /*MPEG-2 registration descriptor*/
594 case AVMEDIA_TYPE_DATA:
595 if (st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV) {
596 *q++ = 0x05; /* MPEG-2 registration descriptor */
606 val = 0xf000 | (q - desc_length_ptr - 2);
607 desc_length_ptr[0] = val >> 8;
608 desc_length_ptr[1] = val;
612 av_log(s, AV_LOG_ERROR,
613 "The PMT section cannot fit stream %d and all following streams.\n"
614 "Try reducing the number of languages in the audio streams "
615 "or the total number of streams.\n", i);
617 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
622 /* NOTE: !str is accepted for an empty string */
623 static void putstr8(uint8_t **q_ptr, const char *str)
639 static void mpegts_write_sdt(AVFormatContext *s)
641 MpegTSWrite *ts = s->priv_data;
642 MpegTSService *service;
643 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
644 int i, running_status, free_ca_mode, val;
649 for (i = 0; i < ts->nb_services; i++) {
650 service = ts->services[i];
651 put16(&q, service->sid);
652 *q++ = 0xfc | 0x00; /* currently no EIT info */
653 desc_list_len_ptr = q;
655 running_status = 4; /* running */
658 /* write only one descriptor for the service name and provider */
662 *q++ = ts->service_type;
663 putstr8(&q, service->provider_name);
664 putstr8(&q, service->name);
665 desc_len_ptr[0] = q - desc_len_ptr - 1;
667 /* fill descriptor length */
668 val = (running_status << 13) | (free_ca_mode << 12) |
669 (q - desc_list_len_ptr - 2);
670 desc_list_len_ptr[0] = val >> 8;
671 desc_list_len_ptr[1] = val;
673 mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, ts->tables_version, 0, 0,
677 static MpegTSService *mpegts_add_service(MpegTSWrite *ts, int sid,
678 const char *provider_name,
681 MpegTSService *service;
683 service = av_mallocz(sizeof(MpegTSService));
686 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
688 service->pcr_pid = 0x1fff;
689 service->provider_name = av_strdup(provider_name);
690 service->name = av_strdup(name);
691 if (!service->provider_name || !service->name)
693 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
698 av_freep(&service->provider_name);
699 av_freep(&service->name);
704 static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
706 return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
710 static void mpegts_prefix_m2ts_header(AVFormatContext *s)
712 MpegTSWrite *ts = s->priv_data;
714 int64_t pcr = get_pcr(s->priv_data, s->pb);
715 uint32_t tp_extra_header = pcr % 0x3fffffff;
716 tp_extra_header = AV_RB32(&tp_extra_header);
717 avio_write(s->pb, (unsigned char *) &tp_extra_header,
718 sizeof(tp_extra_header));
722 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
724 AVFormatContext *ctx = s->opaque;
725 mpegts_prefix_m2ts_header(ctx);
726 avio_write(ctx->pb, packet, TS_PACKET_SIZE);
729 static int mpegts_init(AVFormatContext *s)
731 MpegTSWrite *ts = s->priv_data;
732 MpegTSWriteStream *ts_st;
733 MpegTSService *service;
734 AVStream *st, *pcr_st = NULL;
735 AVDictionaryEntry *title, *provider;
737 const char *service_name;
738 const char *provider_name;
742 if (s->max_delay < 0) /* Not set by the caller */
745 // round up to a whole number of TS packets
746 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
748 ts->tsid = ts->transport_stream_id;
749 ts->onid = ts->original_network_id;
750 if (!s->nb_programs) {
751 /* allocate a single DVB service */
752 title = av_dict_get(s->metadata, "service_name", NULL, 0);
754 title = av_dict_get(s->metadata, "title", NULL, 0);
755 service_name = title ? title->value : DEFAULT_SERVICE_NAME;
756 provider = av_dict_get(s->metadata, "service_provider", NULL, 0);
757 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
758 service = mpegts_add_service(ts, ts->service_id,
759 provider_name, service_name);
762 return AVERROR(ENOMEM);
764 service->pmt.write_packet = section_write_packet;
765 service->pmt.opaque = s;
766 service->pmt.cc = 15;
768 for (i = 0; i < s->nb_programs; i++) {
769 AVProgram *program = s->programs[i];
770 title = av_dict_get(program->metadata, "service_name", NULL, 0);
772 title = av_dict_get(program->metadata, "title", NULL, 0);
773 service_name = title ? title->value : DEFAULT_SERVICE_NAME;
774 provider = av_dict_get(program->metadata, "service_provider", NULL, 0);
775 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
776 service = mpegts_add_service(ts, program->id,
777 provider_name, service_name);
780 return AVERROR(ENOMEM);
782 service->pmt.write_packet = section_write_packet;
783 service->pmt.opaque = s;
784 service->pmt.cc = 15;
785 service->program = program;
789 ts->pat.pid = PAT_PID;
790 /* Initialize at 15 so that it wraps and is equal to 0 for the
791 * first packet we write. */
793 ts->pat.write_packet = section_write_packet;
796 ts->sdt.pid = SDT_PID;
798 ts->sdt.write_packet = section_write_packet;
801 pids = av_malloc_array(s->nb_streams, sizeof(*pids));
803 ret = AVERROR(ENOMEM);
807 /* assign pids to each stream */
808 for (i = 0; i < s->nb_streams; i++) {
812 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
814 ret = AVERROR(ENOMEM);
817 st->priv_data = ts_st;
819 ts_st->user_tb = st->time_base;
820 avpriv_set_pts_info(st, 33, 1, 90000);
822 ts_st->payload = av_mallocz(ts->pes_payload_size);
823 if (!ts_st->payload) {
824 ret = AVERROR(ENOMEM);
828 program = av_find_program_from_stream(s, NULL, i);
830 for (j = 0; j < ts->nb_services; j++) {
831 if (ts->services[j]->program == program) {
832 service = ts->services[j];
838 ts_st->service = service;
839 /* MPEG pid values < 16 are reserved. Applications which set st->id in
840 * this range are assigned a calculated pid. */
842 ts_st->pid = ts->start_pid + i;
843 } else if (st->id < 0x1FFF) {
846 av_log(s, AV_LOG_ERROR,
847 "Invalid stream id %d, must be less than 8191\n", st->id);
848 ret = AVERROR(EINVAL);
851 if (ts_st->pid == service->pmt.pid) {
852 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
853 ret = AVERROR(EINVAL);
856 for (j = 0; j < i; j++) {
857 if (pids[j] == ts_st->pid) {
858 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
859 ret = AVERROR(EINVAL);
863 pids[i] = ts_st->pid;
864 ts_st->payload_pts = AV_NOPTS_VALUE;
865 ts_st->payload_dts = AV_NOPTS_VALUE;
866 ts_st->first_pts_check = 1;
868 /* update PCR pid by using the first video stream */
869 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
870 service->pcr_pid == 0x1fff) {
871 service->pcr_pid = ts_st->pid;
874 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
875 st->codecpar->extradata_size > 0) {
877 ts_st->amux = avformat_alloc_context();
879 ret = AVERROR(ENOMEM);
882 ts_st->amux->oformat =
883 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
885 if (!ts_st->amux->oformat) {
886 ret = AVERROR(EINVAL);
889 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
890 ret = AVERROR(ENOMEM);
893 ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
896 ast->time_base = st->time_base;
897 ret = avformat_write_header(ts_st->amux, NULL);
901 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
902 ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
908 /* if no video stream, use the first stream as PCR */
909 if (service->pcr_pid == 0x1fff && s->nb_streams > 0) {
910 pcr_st = s->streams[0];
911 ts_st = pcr_st->priv_data;
912 service->pcr_pid = ts_st->pid;
914 ts_st = pcr_st->priv_data;
916 if (ts->mux_rate > 1) {
917 service->pcr_packet_period = (int64_t)ts->mux_rate * ts->pcr_period /
918 (TS_PACKET_SIZE * 8 * 1000);
919 ts->sdt_packet_period = (int64_t)ts->mux_rate * SDT_RETRANS_TIME /
920 (TS_PACKET_SIZE * 8 * 1000);
921 ts->pat_packet_period = (int64_t)ts->mux_rate * PAT_RETRANS_TIME /
922 (TS_PACKET_SIZE * 8 * 1000);
925 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
927 /* Arbitrary values, PAT/PMT will also be written on video key frames */
928 ts->sdt_packet_period = 200;
929 ts->pat_packet_period = 40;
930 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
931 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
933 av_log(s, AV_LOG_WARNING, "frame size not set\n");
934 service->pcr_packet_period =
935 pcr_st->codecpar->sample_rate / (10 * 512);
937 service->pcr_packet_period =
938 pcr_st->codecpar->sample_rate / (10 * frame_size);
941 // max delta PCR 0.1s
942 // TODO: should be avg_frame_rate
943 service->pcr_packet_period =
944 ts_st->user_tb.den / (10 * ts_st->user_tb.num);
946 if (!service->pcr_packet_period)
947 service->pcr_packet_period = 1;
950 ts->last_pat_ts = AV_NOPTS_VALUE;
951 ts->last_sdt_ts = AV_NOPTS_VALUE;
952 // The user specified a period, use only it
953 if (ts->pat_period < INT_MAX/2) {
954 ts->pat_packet_period = INT_MAX;
956 if (ts->sdt_period < INT_MAX/2) {
957 ts->sdt_packet_period = INT_MAX;
960 // output a PCR as soon as possible
961 service->pcr_packet_count = service->pcr_packet_period;
962 ts->pat_packet_count = ts->pat_packet_period - 1;
963 ts->sdt_packet_count = ts->sdt_packet_period - 1;
965 if (ts->mux_rate == 1)
966 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
968 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
969 av_log(s, AV_LOG_VERBOSE,
970 "pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n",
971 service->pcr_packet_period,
972 ts->sdt_packet_period, ts->pat_packet_period);
974 if (ts->m2ts_mode == -1) {
975 if (av_match_ext(s->filename, "m2ts")) {
989 /* send SDT, PAT and PMT tables regulary */
990 static void retransmit_si_info(AVFormatContext *s, int force_pat, int64_t dts)
992 MpegTSWrite *ts = s->priv_data;
995 if (++ts->sdt_packet_count == ts->sdt_packet_period ||
996 (dts != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
997 (dts != AV_NOPTS_VALUE && dts - ts->last_sdt_ts >= ts->sdt_period*90000.0)
999 ts->sdt_packet_count = 0;
1000 if (dts != AV_NOPTS_VALUE)
1001 ts->last_sdt_ts = FFMAX(dts, ts->last_sdt_ts);
1002 mpegts_write_sdt(s);
1004 if (++ts->pat_packet_count == ts->pat_packet_period ||
1005 (dts != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1006 (dts != AV_NOPTS_VALUE && dts - ts->last_pat_ts >= ts->pat_period*90000.0) ||
1008 ts->pat_packet_count = 0;
1009 if (dts != AV_NOPTS_VALUE)
1010 ts->last_pat_ts = FFMAX(dts, ts->last_pat_ts);
1011 mpegts_write_pat(s);
1012 for (i = 0; i < ts->nb_services; i++)
1013 mpegts_write_pmt(s, ts->services[i]);
1017 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1019 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1021 *buf++ = pcr_high >> 25;
1022 *buf++ = pcr_high >> 17;
1023 *buf++ = pcr_high >> 9;
1024 *buf++ = pcr_high >> 1;
1025 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1031 /* Write a single null transport stream packet */
1032 static void mpegts_insert_null_packet(AVFormatContext *s)
1035 uint8_t buf[TS_PACKET_SIZE];
1042 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1043 mpegts_prefix_m2ts_header(s);
1044 avio_write(s->pb, buf, TS_PACKET_SIZE);
1047 /* Write a single transport stream packet with a PCR and no payload */
1048 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1050 MpegTSWrite *ts = s->priv_data;
1051 MpegTSWriteStream *ts_st = st->priv_data;
1053 uint8_t buf[TS_PACKET_SIZE];
1057 *q++ = ts_st->pid >> 8;
1059 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1060 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1061 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1062 *q++ = 0x10; /* Adaptation flags: PCR present */
1064 /* PCR coded into 6 bytes */
1065 q += write_pcr_bits(q, get_pcr(ts, s->pb));
1067 /* stuffing bytes */
1068 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1069 mpegts_prefix_m2ts_header(s);
1070 avio_write(s->pb, buf, TS_PACKET_SIZE);
1073 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1077 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1079 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1082 val = (((pts) & 0x7fff) << 1) | 1;
1087 /* Set an adaptation field flag in an MPEG-TS packet*/
1088 static void set_af_flag(uint8_t *pkt, int flag)
1090 // expect at least one flag to set
1093 if ((pkt[3] & 0x20) == 0) {
1094 // no AF yet, set adaptation field flag
1096 // 1 byte length, no flags
1103 /* Extend the adaptation field by size bytes */
1104 static void extend_af(uint8_t *pkt, int size)
1106 // expect already existing adaptation field
1107 av_assert0(pkt[3] & 0x20);
1111 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1112 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1115 return pkt + 5 + pkt[4];
1120 /* Add a PES header to the front of the payload, and segment into an integer
1121 * number of TS packets. The final TS packet is padded using an oversized
1122 * adaptation header to exactly fill the last TS packet.
1123 * NOTE: 'payload' contains a complete PES payload. */
1124 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1125 const uint8_t *payload, int payload_size,
1126 int64_t pts, int64_t dts, int key, int stream_id)
1128 MpegTSWriteStream *ts_st = st->priv_data;
1129 MpegTSWrite *ts = s->priv_data;
1130 uint8_t buf[TS_PACKET_SIZE];
1132 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1133 int afc_len, stuffing_len;
1134 int64_t pcr = -1; /* avoid warning */
1135 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1136 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1138 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1139 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1144 while (payload_size > 0) {
1145 retransmit_si_info(s, force_pat, dts);
1149 if (ts_st->pid == ts_st->service->pcr_pid) {
1150 if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames
1151 ts_st->service->pcr_packet_count++;
1152 if (ts_st->service->pcr_packet_count >=
1153 ts_st->service->pcr_packet_period) {
1154 ts_st->service->pcr_packet_count = 0;
1159 if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE &&
1160 (dts - get_pcr(ts, s->pb) / 300) > delay) {
1161 /* pcr insert gets priority over null packet insert */
1163 mpegts_insert_pcr_only(s, st);
1165 mpegts_insert_null_packet(s);
1166 /* recalculate write_pcr and possibly retransmit si_info */
1170 /* prepare packet header */
1173 val = ts_st->pid >> 8;
1178 ts_st->cc = ts_st->cc + 1 & 0xf;
1179 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1180 if (key && is_start && pts != AV_NOPTS_VALUE) {
1181 // set Random Access for key frames
1182 if (ts_st->pid == ts_st->service->pcr_pid)
1184 set_af_flag(buf, 0x40);
1185 q = get_ts_payload_start(buf);
1188 set_af_flag(buf, 0x10);
1189 q = get_ts_payload_start(buf);
1190 // add 11, pcr references the last byte of program clock reference base
1191 if (ts->mux_rate > 1)
1192 pcr = get_pcr(ts, s->pb);
1194 pcr = (dts - delay) * 300;
1195 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1196 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1197 extend_af(buf, write_pcr_bits(q, pcr));
1198 q = get_ts_payload_start(buf);
1201 int pes_extension = 0;
1202 int pes_header_stuffing_bytes = 0;
1203 /* write PES header */
1207 is_dvb_subtitle = 0;
1208 is_dvb_teletext = 0;
1209 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1210 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1214 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1215 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1216 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1217 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1219 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1220 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1223 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1224 *q++ = stream_id != -1 ? stream_id : 0xfc;
1226 if (stream_id == 0xbd) /* asynchronous KLV */
1227 pts = dts = AV_NOPTS_VALUE;
1230 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1231 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1232 is_dvb_subtitle = 1;
1233 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1234 is_dvb_teletext = 1;
1240 if (pts != AV_NOPTS_VALUE) {
1244 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1248 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1249 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1250 /* set PES_extension_flag */
1254 /* One byte for PES2 extension flag +
1255 * one byte for extension length +
1256 * one byte for extension id */
1259 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1260 * otherwise it will not play sound on blu-ray
1262 if (ts->m2ts_mode &&
1263 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1264 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1265 /* set PES_extension_flag */
1270 if (is_dvb_teletext) {
1271 pes_header_stuffing_bytes = 0x24 - header_len;
1274 len = payload_size + header_len + 3;
1275 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1276 if (is_dvb_subtitle) {
1282 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1288 /* data alignment indicator is required for subtitle and data streams */
1289 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1294 if (pts != AV_NOPTS_VALUE) {
1295 write_pts(q, flags >> 6, pts);
1298 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1299 write_pts(q, 1, dts);
1302 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1303 flags = 0x01; /* set PES_extension_flag_2 */
1305 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1306 /* Set the stream ID extension flag bit to 0 and
1307 * write the extended stream ID. */
1310 /* For Blu-ray AC3 Audio Setting extended flags */
1311 if (ts->m2ts_mode &&
1313 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1314 flags = 0x01; /* set PES_extension_flag_2 */
1316 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1317 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1321 if (is_dvb_subtitle) {
1322 /* First two fields of DVB subtitles PES data:
1323 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1324 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1328 if (is_dvb_teletext) {
1329 memset(q, 0xff, pes_header_stuffing_bytes);
1330 q += pes_header_stuffing_bytes;
1335 header_len = q - buf;
1337 len = TS_PACKET_SIZE - header_len;
1338 if (len > payload_size)
1340 stuffing_len = TS_PACKET_SIZE - header_len - len;
1341 if (stuffing_len > 0) {
1342 /* add stuffing with AFC */
1343 if (buf[3] & 0x20) {
1344 /* stuffing already present: increase its size */
1345 afc_len = buf[4] + 1;
1346 memmove(buf + 4 + afc_len + stuffing_len,
1348 header_len - (4 + afc_len));
1349 buf[4] += stuffing_len;
1350 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1353 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1355 buf[4] = stuffing_len - 1;
1356 if (stuffing_len >= 2) {
1358 memset(buf + 6, 0xff, stuffing_len - 2);
1363 if (is_dvb_subtitle && payload_size == len) {
1364 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1365 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1367 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1371 payload_size -= len;
1372 mpegts_prefix_m2ts_header(s);
1373 avio_write(s->pb, buf, TS_PACKET_SIZE);
1375 ts_st->prev_payload_key = key;
1378 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1380 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1381 if (!st->nb_frames) {
1382 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1383 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1384 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1385 return AVERROR_INVALIDDATA;
1387 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1388 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1389 av_log(s, AV_LOG_WARNING, "\n");
1394 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1396 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1397 if (!st->nb_frames) {
1398 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1399 return AVERROR_PATCHWELCOME;
1401 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1402 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1403 av_log(s, AV_LOG_WARNING, "\n");
1408 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1409 * Released under the LGPL v2.1+, written by
1410 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1412 static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1414 static const int durations[32] = {
1415 480, 960, 1920, 2880, /* Silk NB */
1416 480, 960, 1920, 2880, /* Silk MB */
1417 480, 960, 1920, 2880, /* Silk WB */
1418 480, 960, /* Hybrid SWB */
1419 480, 960, /* Hybrid FB */
1420 120, 240, 480, 960, /* CELT NB */
1421 120, 240, 480, 960, /* CELT NB */
1422 120, 240, 480, 960, /* CELT NB */
1423 120, 240, 480, 960, /* CELT NB */
1425 int toc, frame_duration, nframes, duration;
1432 frame_duration = durations[toc >> 3];
1446 nframes = pkt->data[1] & 63;
1450 duration = nframes * frame_duration;
1451 if (duration > 5760) {
1452 av_log(s, AV_LOG_WARNING,
1453 "Opus packet duration > 120 ms, invalid");
1460 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1462 AVStream *st = s->streams[pkt->stream_index];
1463 int size = pkt->size;
1464 uint8_t *buf = pkt->data;
1465 uint8_t *data = NULL;
1466 MpegTSWrite *ts = s->priv_data;
1467 MpegTSWriteStream *ts_st = st->priv_data;
1468 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1469 int64_t dts = pkt->dts, pts = pkt->pts;
1470 int opus_samples = 0;
1472 char *side_data = NULL;
1475 side_data = av_packet_get_side_data(pkt,
1476 AV_PKT_DATA_MPEGTS_STREAM_ID,
1479 stream_id = side_data[0];
1481 if (ts->reemit_pat_pmt) {
1482 av_log(s, AV_LOG_WARNING,
1483 "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
1484 ts->reemit_pat_pmt = 0;
1485 ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT;
1488 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1489 ts->pat_packet_count = ts->pat_packet_period - 1;
1490 ts->sdt_packet_count = ts->sdt_packet_period - 1;
1491 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1494 if (ts->copyts < 1) {
1495 if (pts != AV_NOPTS_VALUE)
1497 if (dts != AV_NOPTS_VALUE)
1501 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
1502 av_log(s, AV_LOG_ERROR, "first pts value must be set\n");
1503 return AVERROR_INVALIDDATA;
1505 ts_st->first_pts_check = 0;
1507 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1508 const uint8_t *p = buf, *buf_end = p + size;
1509 uint32_t state = -1;
1510 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1511 int ret = ff_check_h264_startcode(s, st, pkt);
1515 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1519 p = avpriv_find_start_code(p, buf_end, &state);
1520 av_log(s, AV_LOG_TRACE, "nal %d\n", state & 0x1f);
1521 if ((state & 0x1f) == 7)
1523 } while (p < buf_end && (state & 0x1f) != 9 &&
1524 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1526 if ((state & 0x1f) != 5)
1528 if ((state & 0x1f) != 9) { // AUD NAL
1529 data = av_malloc(pkt->size + 6 + extradd);
1531 return AVERROR(ENOMEM);
1532 memcpy(data + 6, st->codecpar->extradata, extradd);
1533 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1534 AV_WB32(data, 0x00000001);
1536 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1538 size = pkt->size + 6 + extradd;
1540 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1541 if (pkt->size < 2) {
1542 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1543 return AVERROR_INVALIDDATA;
1545 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1550 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1551 "and extradata missing\n");
1553 av_init_packet(&pkt2);
1554 pkt2.data = pkt->data;
1555 pkt2.size = pkt->size;
1556 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1557 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1559 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1561 return AVERROR(ENOMEM);
1563 ret = av_write_frame(ts_st->amux, &pkt2);
1565 ffio_free_dyn_buf(&ts_st->amux->pb);
1568 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1569 ts_st->amux->pb = NULL;
1573 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1574 int ret = check_hevc_startcode(s, st, pkt);
1577 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1578 if (pkt->size < 2) {
1579 av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1580 return AVERROR_INVALIDDATA;
1583 /* Add Opus control header */
1584 if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1588 int ctrl_header_size;
1589 int trim_start = 0, trim_end = 0;
1591 opus_samples = opus_get_packet_samples(s, pkt);
1593 side_data = av_packet_get_side_data(pkt,
1594 AV_PKT_DATA_SKIP_SAMPLES,
1597 if (side_data && side_data_size >= 10) {
1598 trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
1601 ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1602 if (ts_st->opus_pending_trim_start)
1603 ctrl_header_size += 2;
1605 ctrl_header_size += 2;
1607 data = av_malloc(ctrl_header_size);
1609 return AVERROR(ENOMEM);
1613 if (ts_st->opus_pending_trim_start)
1621 data[i] = FFMIN(n, 255);
1626 av_assert0(2 + pkt->size / 255 + 1 == i);
1628 if (ts_st->opus_pending_trim_start) {
1629 trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1630 AV_WB16(data + i, trim_start);
1632 ts_st->opus_pending_trim_start -= trim_start;
1635 trim_end = FFMIN(trim_end, opus_samples - trim_start);
1636 AV_WB16(data + i, trim_end);
1640 memcpy(data + i, pkt->data, pkt->size);
1642 size = ctrl_header_size;
1644 /* TODO: Can we get TS formatted data here? If so we will
1645 * need to count the samples of that too! */
1646 av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1650 if (pkt->dts != AV_NOPTS_VALUE) {
1652 for(i=0; i<s->nb_streams; i++) {
1653 AVStream *st2 = s->streams[i];
1654 MpegTSWriteStream *ts_st2 = st2->priv_data;
1655 if ( ts_st2->payload_size
1656 && (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)) {
1657 mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size,
1658 ts_st2->payload_pts, ts_st2->payload_dts,
1659 ts_st2->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1660 ts_st2->payload_size = 0;
1665 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1666 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1667 av_compare_ts(dts - ts_st->payload_dts, st->time_base,
1668 s->max_delay, AV_TIME_BASE_Q) >= 0) ||
1669 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1670 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1671 ts_st->payload_pts, ts_st->payload_dts,
1672 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1673 ts_st->payload_size = 0;
1674 ts_st->opus_queued_samples = 0;
1677 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1678 av_assert0(!ts_st->payload_size);
1679 // for video and subtitle, write a single pes packet
1680 mpegts_write_pes(s, st, buf, size, pts, dts,
1681 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
1682 ts_st->opus_queued_samples = 0;
1687 if (!ts_st->payload_size) {
1688 ts_st->payload_pts = pts;
1689 ts_st->payload_dts = dts;
1690 ts_st->payload_flags = pkt->flags;
1693 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1694 ts_st->payload_size += size;
1695 ts_st->opus_queued_samples += opus_samples;
1702 static void mpegts_write_flush(AVFormatContext *s)
1706 /* flush current packets */
1707 for (i = 0; i < s->nb_streams; i++) {
1708 AVStream *st = s->streams[i];
1709 MpegTSWriteStream *ts_st = st->priv_data;
1710 if (ts_st->payload_size > 0) {
1711 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1712 ts_st->payload_pts, ts_st->payload_dts,
1713 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
1714 ts_st->payload_size = 0;
1715 ts_st->opus_queued_samples = 0;
1720 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
1723 mpegts_write_flush(s);
1726 return mpegts_write_packet_internal(s, pkt);
1730 static int mpegts_write_end(AVFormatContext *s)
1733 mpegts_write_flush(s);
1738 static void mpegts_deinit(AVFormatContext *s)
1740 MpegTSWrite *ts = s->priv_data;
1741 MpegTSService *service;
1744 for (i = 0; i < s->nb_streams; i++) {
1745 AVStream *st = s->streams[i];
1746 MpegTSWriteStream *ts_st = st->priv_data;
1748 av_freep(&ts_st->payload);
1750 avformat_free_context(ts_st->amux);
1756 for (i = 0; i < ts->nb_services; i++) {
1757 service = ts->services[i];
1758 av_freep(&service->provider_name);
1759 av_freep(&service->name);
1762 av_freep(&ts->services);
1765 static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
1768 AVStream *st = s->streams[pkt->stream_index];
1770 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1771 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1772 AV_RB24(pkt->data) != 0x000001)
1773 ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
1774 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1775 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1776 AV_RB24(pkt->data) != 0x000001)
1777 ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
1783 static const AVOption options[] = {
1784 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1785 offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
1786 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1787 { "mpegts_original_network_id", "Set original_network_id field.",
1788 offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT,
1789 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1790 { "mpegts_service_id", "Set service_id field.",
1791 offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
1792 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1793 { "mpegts_service_type", "Set service_type field.",
1794 offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT,
1795 { .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1796 { "digital_tv", "Digital Television.",
1797 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff,
1798 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1799 { "digital_radio", "Digital Radio.",
1800 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff,
1801 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1802 { "teletext", "Teletext.",
1803 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff,
1804 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1805 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
1806 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff,
1807 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1808 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
1809 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff,
1810 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1811 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
1812 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff,
1813 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1814 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
1815 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff,
1816 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1817 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
1818 offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT,
1819 { .i64 = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM },
1820 { "mpegts_start_pid", "Set the first pid.",
1821 offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT,
1822 { .i64 = 0x0100 }, 0x0020, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM },
1823 { "mpegts_m2ts_mode", "Enable m2ts mode.",
1824 offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_BOOL,
1825 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1827 offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
1828 { .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1829 { "pes_payload_size", "Minimum PES packet payload in bytes",
1830 offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT,
1831 { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1832 { "mpegts_flags", "MPEG-TS muxing flags",
1833 offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX,
1834 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1835 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1836 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
1837 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1838 { "latm", "Use LATM packetization for AAC",
1839 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
1840 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1841 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
1842 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX,
1843 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1844 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
1845 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX,
1846 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1847 // backward compatibility
1848 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1849 offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT,
1850 { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1851 { "mpegts_copyts", "don't offset dts/pts",
1852 offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_BOOL,
1853 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1854 { "tables_version", "set PAT, PMT and SDT version",
1855 offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT,
1856 { .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM },
1857 { "omit_video_pes_length", "Omit the PES packet length for video packets",
1858 offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_BOOL,
1859 { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
1860 { "pcr_period", "PCR retransmission time",
1861 offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT,
1862 { .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1863 { "pat_period", "PAT/PMT retransmission time limit in seconds",
1864 offsetof(MpegTSWrite, pat_period), AV_OPT_TYPE_DOUBLE,
1865 { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1866 { "sdt_period", "SDT retransmission time limit in seconds",
1867 offsetof(MpegTSWrite, sdt_period), AV_OPT_TYPE_DOUBLE,
1868 { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1872 static const AVClass mpegts_muxer_class = {
1873 .class_name = "MPEGTS muxer",
1874 .item_name = av_default_item_name,
1876 .version = LIBAVUTIL_VERSION_INT,
1879 AVOutputFormat ff_mpegts_muxer = {
1881 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
1882 .mime_type = "video/MP2T",
1883 .extensions = "ts,m2t,m2ts,mts",
1884 .priv_data_size = sizeof(MpegTSWrite),
1885 .audio_codec = AV_CODEC_ID_MP2,
1886 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
1887 .init = mpegts_init,
1888 .write_packet = mpegts_write_packet,
1889 .write_trailer = mpegts_write_end,
1890 .deinit = mpegts_deinit,
1891 .check_bitstream = mpegts_check_bitstream,
1892 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS,
1893 .priv_class = &mpegts_muxer_class,