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;
61 // service_type values as defined in ETSI 300 468
63 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
64 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
65 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
66 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
67 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
68 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
69 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19
71 typedef struct MpegTSWrite {
72 const AVClass *av_class;
73 MpegTSSection pat; /* MPEG2 pat table */
74 MpegTSSection sdt; /* MPEG2 sdt table context */
75 MpegTSService **services;
77 int sdt_packet_period;
79 int pat_packet_period;
84 int mux_rate; ///< set to 1 when VBR
87 int transport_stream_id;
88 int original_network_id;
96 int reemit_pat_pmt; // backward compatibility
99 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
100 #define MPEGTS_FLAG_AAC_LATM 0x02
101 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
102 #define MPEGTS_FLAG_SYSTEM_B 0x08
111 int omit_video_pes_length;
114 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
115 #define DEFAULT_PES_HEADER_FREQ 16
116 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
118 /* The section length is 12 bits. The first 2 are set to 0, the remaining
119 * 10 bits should not exceed 1021. */
120 #define SECTION_LENGTH 1020
122 /* NOTE: 4 bytes must be left at the end for the crc32 */
123 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
126 unsigned char packet[TS_PACKET_SIZE];
127 const unsigned char *buf_ptr;
129 int first, b, len1, left;
131 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
134 buf[len - 4] = (crc >> 24) & 0xff;
135 buf[len - 3] = (crc >> 16) & 0xff;
136 buf[len - 2] = (crc >> 8) & 0xff;
137 buf[len - 1] = crc & 0xff;
139 /* send each packet */
142 first = buf == buf_ptr;
150 s->cc = s->cc + 1 & 0xf;
153 *q++ = 0; /* 0 offset */
154 len1 = TS_PACKET_SIZE - (q - packet);
157 memcpy(q, buf_ptr, len1);
159 /* add known padding data */
160 left = TS_PACKET_SIZE - (q - packet);
162 memset(q, 0xff, left);
164 s->write_packet(s, packet);
171 static inline void put16(uint8_t **q_ptr, int val)
180 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
181 int version, int sec_num, int last_sec_num,
182 uint8_t *buf, int len)
184 uint8_t section[1024], *q;
185 unsigned int tot_len;
186 /* reserved_future_use field must be set to 1 for SDT */
187 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
189 tot_len = 3 + 5 + len + 4;
190 /* check if not too big */
192 return AVERROR_INVALIDDATA;
196 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
198 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
203 mpegts_write_section(s, section, tot_len);
207 /*********************************************/
210 #define DEFAULT_PROVIDER_NAME "FFmpeg"
211 #define DEFAULT_SERVICE_NAME "Service01"
213 /* we retransmit the SI info at this rate */
214 #define SDT_RETRANS_TIME 500
215 #define PAT_RETRANS_TIME 100
216 #define PCR_RETRANS_TIME 20
218 typedef struct MpegTSWriteStream {
219 struct MpegTSService *service;
220 int pid; /* stream associated pid */
223 int first_pts_check; ///< first pts check needed
224 int prev_payload_key;
229 AVFormatContext *amux;
233 int opus_queued_samples;
234 int opus_pending_trim_start;
237 static void mpegts_write_pat(AVFormatContext *s)
239 MpegTSWrite *ts = s->priv_data;
240 MpegTSService *service;
241 uint8_t data[SECTION_LENGTH], *q;
245 for (i = 0; i < ts->nb_services; i++) {
246 service = ts->services[i];
247 put16(&q, service->sid);
248 put16(&q, 0xe000 | service->pmt.pid);
250 mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, ts->tables_version, 0, 0,
254 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
256 MpegTSWrite *ts = s->priv_data;
257 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
258 int val, stream_type, i, err = 0;
261 put16(&q, 0xe000 | service->pcr_pid);
263 program_info_length_ptr = q;
264 q += 2; /* patched after */
266 /* put program info here */
268 val = 0xf000 | (q - program_info_length_ptr - 2);
269 program_info_length_ptr[0] = val >> 8;
270 program_info_length_ptr[1] = val;
272 for (i = 0; i < s->nb_streams; i++) {
273 AVStream *st = s->streams[i];
274 MpegTSWriteStream *ts_st = st->priv_data;
275 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
277 if (s->nb_programs) {
280 for (j = 0; j < s->nb_programs; j++)
281 if (s->programs[j]->id == service->sid) {
282 for (k = 0; k < s->programs[j]->nb_stream_indexes; k++)
283 if (s->programs[j]->stream_index[k] == i) {
294 if (q - data > SECTION_LENGTH - 32) {
298 switch (st->codec->codec_id) {
299 case AV_CODEC_ID_MPEG1VIDEO:
300 case AV_CODEC_ID_MPEG2VIDEO:
301 stream_type = STREAM_TYPE_VIDEO_MPEG2;
303 case AV_CODEC_ID_MPEG4:
304 stream_type = STREAM_TYPE_VIDEO_MPEG4;
306 case AV_CODEC_ID_H264:
307 stream_type = STREAM_TYPE_VIDEO_H264;
309 case AV_CODEC_ID_HEVC:
310 stream_type = STREAM_TYPE_VIDEO_HEVC;
312 case AV_CODEC_ID_CAVS:
313 stream_type = STREAM_TYPE_VIDEO_CAVS;
315 case AV_CODEC_ID_DIRAC:
316 stream_type = STREAM_TYPE_VIDEO_DIRAC;
318 case AV_CODEC_ID_VC1:
319 stream_type = STREAM_TYPE_VIDEO_VC1;
321 case AV_CODEC_ID_MP2:
322 case AV_CODEC_ID_MP3:
323 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;
353 stream_type = STREAM_TYPE_PRIVATE_DATA;
358 put16(&q, 0xe000 | ts_st->pid);
360 q += 2; /* patched after */
362 /* write optional descriptors here */
363 switch (st->codec->codec_type) {
364 case AVMEDIA_TYPE_AUDIO:
365 if (st->codec->codec_id==AV_CODEC_ID_AC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
366 *q++=0x6a; // AC3 descriptor see A038 DVB SI
367 *q++=1; // 1 byte, all flags sets to 0
368 *q++=0; // omit all fields...
370 if (st->codec->codec_id==AV_CODEC_ID_EAC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
371 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
372 *q++=1; // 1 byte, all flags sets to 0
373 *q++=0; // omit all fields...
375 if (st->codec->codec_id==AV_CODEC_ID_S302M) {
376 *q++ = 0x05; /* MPEG-2 registration descriptor*/
383 if (st->codec->codec_id==AV_CODEC_ID_OPUS) {
384 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
385 if (q - data > SECTION_LENGTH - 6 - 4) {
390 *q++ = 0x05; /* MPEG-2 registration descriptor*/
397 *q++ = 0x7f; /* DVB extension descriptor */
401 if (st->codec->extradata && st->codec->extradata_size >= 19) {
402 if (st->codec->extradata[18] == 0 && st->codec->channels <= 2) {
403 /* RTP mapping family */
404 *q++ = st->codec->channels;
405 } else if (st->codec->extradata[18] == 1 && st->codec->channels <= 8 &&
406 st->codec->extradata_size >= 21 + st->codec->channels) {
407 static const uint8_t coupled_stream_counts[9] = {
408 1, 0, 1, 1, 2, 2, 2, 3, 3
410 static const uint8_t channel_map_a[8][8] = {
417 {0, 4, 1, 2, 3, 5, 6},
418 {0, 6, 1, 2, 3, 4, 5, 7},
420 static const uint8_t channel_map_b[8][8] = {
427 {0, 1, 2, 3, 4, 5, 6},
428 {0, 1, 2, 3, 4, 5, 6, 7},
430 /* Vorbis mapping family */
432 if (st->codec->extradata[19] == st->codec->channels - coupled_stream_counts[st->codec->channels] &&
433 st->codec->extradata[20] == coupled_stream_counts[st->codec->channels] &&
434 memcmp(&st->codec->extradata[21], channel_map_a[st->codec->channels-1], st->codec->channels) == 0) {
435 *q++ = st->codec->channels;
436 } else if (st->codec->channels >= 2 && st->codec->extradata[19] == st->codec->channels &&
437 st->codec->extradata[20] == 0 &&
438 memcmp(&st->codec->extradata[21], channel_map_b[st->codec->channels-1], st->codec->channels) == 0) {
439 *q++ = st->codec->channels | 0x80;
441 /* Unsupported, could write an extended descriptor here */
442 av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
447 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codec->extradata[18]);
450 } else if (st->codec->channels <= 2) {
451 /* Assume RTP mapping family */
452 *q++ = st->codec->channels;
455 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
462 char *next = lang->value;
465 *q++ = 0x0a; /* ISO 639 language descriptor */
469 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
470 if (q - data > SECTION_LENGTH - 4) {
474 next = strchr(p, ',');
475 if (strlen(p) != 3 && (!next || next != p + 3))
476 continue; /* not a 3-letter code */
482 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
484 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
486 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
489 *q++ = 0; /* undefined type */
495 q -= 2; /* no language codes were written */
498 case AVMEDIA_TYPE_SUBTITLE:
500 const char default_language[] = "und";
501 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
503 if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
505 int extradata_copied = 0;
507 *q++ = 0x59; /* subtitling_descriptor */
510 while (strlen(language) >= 3) {
511 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
519 if (*language != '\0')
522 if (st->codec->extradata_size - extradata_copied >= 5) {
523 *q++ = st->codec->extradata[extradata_copied + 4]; /* subtitling_type */
524 memcpy(q, st->codec->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
525 extradata_copied += 5;
529 * 0x10 - normal with no monitor aspect ratio criticality
530 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
531 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
532 if ((st->codec->extradata_size == 4) && (extradata_copied == 0)) {
533 /* support of old 4-byte extradata format */
534 memcpy(q, st->codec->extradata, 4); /* composition_page_id and ancillary_page_id */
535 extradata_copied += 4;
538 put16(&q, 1); /* composition_page_id */
539 put16(&q, 1); /* ancillary_page_id */
544 *len_ptr = q - len_ptr - 1;
545 } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
546 uint8_t *len_ptr = NULL;
547 int extradata_copied = 0;
549 /* The descriptor tag. teletext_descriptor */
553 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
558 if (*language != '\0')
561 if (st->codec->extradata_size - 1 > extradata_copied) {
562 memcpy(q, st->codec->extradata + extradata_copied, 2);
563 extradata_copied += 2;
566 /* The Teletext descriptor:
567 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
568 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
569 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
575 *len_ptr = q - len_ptr - 1;
579 case AVMEDIA_TYPE_VIDEO:
580 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
581 *q++ = 0x05; /*MPEG-2 registration descriptor*/
587 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
588 *q++ = 0x05; /*MPEG-2 registration descriptor*/
596 case AVMEDIA_TYPE_DATA:
597 if (st->codec->codec_id == AV_CODEC_ID_SMPTE_KLV) {
598 *q++ = 0x05; /* MPEG-2 registration descriptor */
608 val = 0xf000 | (q - desc_length_ptr - 2);
609 desc_length_ptr[0] = val >> 8;
610 desc_length_ptr[1] = val;
614 av_log(s, AV_LOG_ERROR,
615 "The PMT section cannot fit stream %d and all following streams.\n"
616 "Try reducing the number of languages in the audio streams "
617 "or the total number of streams.\n", i);
619 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
624 /* NOTE: !str is accepted for an empty string */
625 static void putstr8(uint8_t **q_ptr, const char *str)
641 static void mpegts_write_sdt(AVFormatContext *s)
643 MpegTSWrite *ts = s->priv_data;
644 MpegTSService *service;
645 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
646 int i, running_status, free_ca_mode, val;
651 for (i = 0; i < ts->nb_services; i++) {
652 service = ts->services[i];
653 put16(&q, service->sid);
654 *q++ = 0xfc | 0x00; /* currently no EIT info */
655 desc_list_len_ptr = q;
657 running_status = 4; /* running */
660 /* write only one descriptor for the service name and provider */
664 *q++ = ts->service_type;
665 putstr8(&q, service->provider_name);
666 putstr8(&q, service->name);
667 desc_len_ptr[0] = q - desc_len_ptr - 1;
669 /* fill descriptor length */
670 val = (running_status << 13) | (free_ca_mode << 12) |
671 (q - desc_list_len_ptr - 2);
672 desc_list_len_ptr[0] = val >> 8;
673 desc_list_len_ptr[1] = val;
675 mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, ts->tables_version, 0, 0,
679 static MpegTSService *mpegts_add_service(MpegTSWrite *ts, int sid,
680 const char *provider_name,
683 MpegTSService *service;
685 service = av_mallocz(sizeof(MpegTSService));
688 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
690 service->pcr_pid = 0x1fff;
691 service->provider_name = av_strdup(provider_name);
692 service->name = av_strdup(name);
693 if (!service->provider_name || !service->name)
695 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
700 av_freep(&service->provider_name);
701 av_freep(&service->name);
706 static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
708 return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
712 static void mpegts_prefix_m2ts_header(AVFormatContext *s)
714 MpegTSWrite *ts = s->priv_data;
716 int64_t pcr = get_pcr(s->priv_data, s->pb);
717 uint32_t tp_extra_header = pcr % 0x3fffffff;
718 tp_extra_header = AV_RB32(&tp_extra_header);
719 avio_write(s->pb, (unsigned char *) &tp_extra_header,
720 sizeof(tp_extra_header));
724 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
726 AVFormatContext *ctx = s->opaque;
727 mpegts_prefix_m2ts_header(ctx);
728 avio_write(ctx->pb, packet, TS_PACKET_SIZE);
731 static int mpegts_init(AVFormatContext *s)
733 MpegTSWrite *ts = s->priv_data;
734 MpegTSWriteStream *ts_st;
735 MpegTSService *service;
736 AVStream *st, *pcr_st = NULL;
737 AVDictionaryEntry *title, *provider;
739 const char *service_name;
740 const char *provider_name;
744 if (s->max_delay < 0) /* Not set by the caller */
747 // round up to a whole number of TS packets
748 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
750 ts->tsid = ts->transport_stream_id;
751 ts->onid = ts->original_network_id;
752 if (!s->nb_programs) {
753 /* allocate a single DVB service */
754 title = av_dict_get(s->metadata, "service_name", NULL, 0);
756 title = av_dict_get(s->metadata, "title", NULL, 0);
757 service_name = title ? title->value : DEFAULT_SERVICE_NAME;
758 provider = av_dict_get(s->metadata, "service_provider", NULL, 0);
759 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
760 service = mpegts_add_service(ts, ts->service_id,
761 provider_name, service_name);
764 return AVERROR(ENOMEM);
766 service->pmt.write_packet = section_write_packet;
767 service->pmt.opaque = s;
768 service->pmt.cc = 15;
770 for (i = 0; i < s->nb_programs; i++) {
771 AVProgram *program = s->programs[i];
772 title = av_dict_get(program->metadata, "service_name", NULL, 0);
774 title = av_dict_get(program->metadata, "title", NULL, 0);
775 service_name = title ? title->value : DEFAULT_SERVICE_NAME;
776 provider = av_dict_get(program->metadata, "service_provider", NULL, 0);
777 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
778 service = mpegts_add_service(ts, program->id,
779 provider_name, service_name);
782 return AVERROR(ENOMEM);
784 service->pmt.write_packet = section_write_packet;
785 service->pmt.opaque = s;
786 service->pmt.cc = 15;
790 ts->pat.pid = PAT_PID;
791 /* Initialize at 15 so that it wraps and is equal to 0 for the
792 * first packet we write. */
794 ts->pat.write_packet = section_write_packet;
797 ts->sdt.pid = SDT_PID;
799 ts->sdt.write_packet = section_write_packet;
802 pids = av_malloc_array(s->nb_streams, sizeof(*pids));
804 ret = AVERROR(ENOMEM);
808 /* assign pids to each stream */
809 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);
827 ts_st->service = service;
828 /* MPEG pid values < 16 are reserved. Applications which set st->id in
829 * this range are assigned a calculated pid. */
831 ts_st->pid = ts->start_pid + i;
832 } else if (st->id < 0x1FFF) {
835 av_log(s, AV_LOG_ERROR,
836 "Invalid stream id %d, must be less than 8191\n", st->id);
837 ret = AVERROR(EINVAL);
840 if (ts_st->pid == service->pmt.pid) {
841 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
842 ret = AVERROR(EINVAL);
845 for (j = 0; j < i; j++) {
846 if (pids[j] == ts_st->pid) {
847 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
848 ret = AVERROR(EINVAL);
852 pids[i] = ts_st->pid;
853 ts_st->payload_pts = AV_NOPTS_VALUE;
854 ts_st->payload_dts = AV_NOPTS_VALUE;
855 ts_st->first_pts_check = 1;
857 /* update PCR pid by using the first video stream */
858 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
859 service->pcr_pid == 0x1fff) {
860 service->pcr_pid = ts_st->pid;
863 if (st->codec->codec_id == AV_CODEC_ID_AAC &&
864 st->codec->extradata_size > 0) {
866 ts_st->amux = avformat_alloc_context();
868 ret = AVERROR(ENOMEM);
871 ts_st->amux->oformat =
872 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
874 if (!ts_st->amux->oformat) {
875 ret = AVERROR(EINVAL);
878 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
879 ret = AVERROR(ENOMEM);
882 ret = avcodec_copy_context(ast->codec, st->codec);
885 ast->time_base = st->time_base;
886 ret = avformat_write_header(ts_st->amux, NULL);
890 if (st->codec->codec_id == AV_CODEC_ID_OPUS) {
891 ts_st->opus_pending_trim_start = st->codec->initial_padding * 48000 / st->codec->sample_rate;
897 /* if no video stream, use the first stream as PCR */
898 if (service->pcr_pid == 0x1fff && s->nb_streams > 0) {
899 pcr_st = s->streams[0];
900 ts_st = pcr_st->priv_data;
901 service->pcr_pid = ts_st->pid;
903 ts_st = pcr_st->priv_data;
905 if (ts->mux_rate > 1) {
906 service->pcr_packet_period = (int64_t)ts->mux_rate * ts->pcr_period /
907 (TS_PACKET_SIZE * 8 * 1000);
908 ts->sdt_packet_period = (int64_t)ts->mux_rate * SDT_RETRANS_TIME /
909 (TS_PACKET_SIZE * 8 * 1000);
910 ts->pat_packet_period = (int64_t)ts->mux_rate * PAT_RETRANS_TIME /
911 (TS_PACKET_SIZE * 8 * 1000);
914 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
916 /* Arbitrary values, PAT/PMT will also be written on video key frames */
917 ts->sdt_packet_period = 200;
918 ts->pat_packet_period = 40;
919 if (pcr_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
920 if (!pcr_st->codec->frame_size) {
921 av_log(s, AV_LOG_WARNING, "frame size not set\n");
922 service->pcr_packet_period =
923 pcr_st->codec->sample_rate / (10 * 512);
925 service->pcr_packet_period =
926 pcr_st->codec->sample_rate / (10 * pcr_st->codec->frame_size);
929 // max delta PCR 0.1s
930 // TODO: should be avg_frame_rate
931 service->pcr_packet_period =
932 ts_st->user_tb.den / (10 * ts_st->user_tb.num);
934 if (!service->pcr_packet_period)
935 service->pcr_packet_period = 1;
938 ts->last_pat_ts = AV_NOPTS_VALUE;
939 ts->last_sdt_ts = AV_NOPTS_VALUE;
940 // The user specified a period, use only it
941 if (ts->pat_period < INT_MAX/2) {
942 ts->pat_packet_period = INT_MAX;
944 if (ts->sdt_period < INT_MAX/2) {
945 ts->sdt_packet_period = INT_MAX;
948 // output a PCR as soon as possible
949 service->pcr_packet_count = service->pcr_packet_period;
950 ts->pat_packet_count = ts->pat_packet_period - 1;
951 ts->sdt_packet_count = ts->sdt_packet_period - 1;
953 if (ts->mux_rate == 1)
954 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
956 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
957 av_log(s, AV_LOG_VERBOSE,
958 "pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n",
959 service->pcr_packet_period,
960 ts->sdt_packet_period, ts->pat_packet_period);
962 if (ts->m2ts_mode == -1) {
963 if (av_match_ext(s->filename, "m2ts")) {
977 /* send SDT, PAT and PMT tables regulary */
978 static void retransmit_si_info(AVFormatContext *s, int force_pat, int64_t dts)
980 MpegTSWrite *ts = s->priv_data;
983 if (++ts->sdt_packet_count == ts->sdt_packet_period ||
984 (dts != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
985 (dts != AV_NOPTS_VALUE && dts - ts->last_sdt_ts >= ts->sdt_period*90000.0)
987 ts->sdt_packet_count = 0;
988 if (dts != AV_NOPTS_VALUE)
989 ts->last_sdt_ts = FFMAX(dts, ts->last_sdt_ts);
992 if (++ts->pat_packet_count == ts->pat_packet_period ||
993 (dts != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
994 (dts != AV_NOPTS_VALUE && dts - ts->last_pat_ts >= ts->pat_period*90000.0) ||
996 ts->pat_packet_count = 0;
997 if (dts != AV_NOPTS_VALUE)
998 ts->last_pat_ts = FFMAX(dts, ts->last_pat_ts);
1000 for (i = 0; i < ts->nb_services; i++)
1001 mpegts_write_pmt(s, ts->services[i]);
1005 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1007 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1009 *buf++ = pcr_high >> 25;
1010 *buf++ = pcr_high >> 17;
1011 *buf++ = pcr_high >> 9;
1012 *buf++ = pcr_high >> 1;
1013 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1019 /* Write a single null transport stream packet */
1020 static void mpegts_insert_null_packet(AVFormatContext *s)
1023 uint8_t buf[TS_PACKET_SIZE];
1030 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1031 mpegts_prefix_m2ts_header(s);
1032 avio_write(s->pb, buf, TS_PACKET_SIZE);
1035 /* Write a single transport stream packet with a PCR and no payload */
1036 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1038 MpegTSWrite *ts = s->priv_data;
1039 MpegTSWriteStream *ts_st = st->priv_data;
1041 uint8_t buf[TS_PACKET_SIZE];
1045 *q++ = ts_st->pid >> 8;
1047 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1048 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1049 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1050 *q++ = 0x10; /* Adaptation flags: PCR present */
1052 /* PCR coded into 6 bytes */
1053 q += write_pcr_bits(q, get_pcr(ts, s->pb));
1055 /* stuffing bytes */
1056 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1057 mpegts_prefix_m2ts_header(s);
1058 avio_write(s->pb, buf, TS_PACKET_SIZE);
1061 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1065 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1067 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1070 val = (((pts) & 0x7fff) << 1) | 1;
1075 /* Set an adaptation field flag in an MPEG-TS packet*/
1076 static void set_af_flag(uint8_t *pkt, int flag)
1078 // expect at least one flag to set
1081 if ((pkt[3] & 0x20) == 0) {
1082 // no AF yet, set adaptation field flag
1084 // 1 byte length, no flags
1091 /* Extend the adaptation field by size bytes */
1092 static void extend_af(uint8_t *pkt, int size)
1094 // expect already existing adaptation field
1095 av_assert0(pkt[3] & 0x20);
1099 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1100 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1103 return pkt + 5 + pkt[4];
1108 /* Add a PES header to the front of the payload, and segment into an integer
1109 * number of TS packets. The final TS packet is padded using an oversized
1110 * adaptation header to exactly fill the last TS packet.
1111 * NOTE: 'payload' contains a complete PES payload. */
1112 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1113 const uint8_t *payload, int payload_size,
1114 int64_t pts, int64_t dts, int key)
1116 MpegTSWriteStream *ts_st = st->priv_data;
1117 MpegTSWrite *ts = s->priv_data;
1118 uint8_t buf[TS_PACKET_SIZE];
1120 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1121 int afc_len, stuffing_len;
1122 int64_t pcr = -1; /* avoid warning */
1123 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1124 int force_pat = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1126 av_assert0(ts_st->payload != buf || st->codec->codec_type != AVMEDIA_TYPE_VIDEO);
1127 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1132 while (payload_size > 0) {
1133 retransmit_si_info(s, force_pat, dts);
1137 if (ts_st->pid == ts_st->service->pcr_pid) {
1138 if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames
1139 ts_st->service->pcr_packet_count++;
1140 if (ts_st->service->pcr_packet_count >=
1141 ts_st->service->pcr_packet_period) {
1142 ts_st->service->pcr_packet_count = 0;
1147 if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE &&
1148 (dts - get_pcr(ts, s->pb) / 300) > delay) {
1149 /* pcr insert gets priority over null packet insert */
1151 mpegts_insert_pcr_only(s, st);
1153 mpegts_insert_null_packet(s);
1154 /* recalculate write_pcr and possibly retransmit si_info */
1158 /* prepare packet header */
1161 val = ts_st->pid >> 8;
1166 ts_st->cc = ts_st->cc + 1 & 0xf;
1167 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1168 if (key && is_start && pts != AV_NOPTS_VALUE) {
1169 // set Random Access for key frames
1170 if (ts_st->pid == ts_st->service->pcr_pid)
1172 set_af_flag(buf, 0x40);
1173 q = get_ts_payload_start(buf);
1176 set_af_flag(buf, 0x10);
1177 q = get_ts_payload_start(buf);
1178 // add 11, pcr references the last byte of program clock reference base
1179 if (ts->mux_rate > 1)
1180 pcr = get_pcr(ts, s->pb);
1182 pcr = (dts - delay) * 300;
1183 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1184 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1185 extend_af(buf, write_pcr_bits(q, pcr));
1186 q = get_ts_payload_start(buf);
1189 int pes_extension = 0;
1190 int pes_header_stuffing_bytes = 0;
1191 /* write PES header */
1195 is_dvb_subtitle = 0;
1196 is_dvb_teletext = 0;
1197 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1198 if (st->codec->codec_id == AV_CODEC_ID_DIRAC)
1202 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1203 (st->codec->codec_id == AV_CODEC_ID_MP2 ||
1204 st->codec->codec_id == AV_CODEC_ID_MP3 ||
1205 st->codec->codec_id == AV_CODEC_ID_AAC)) {
1207 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1208 st->codec->codec_id == AV_CODEC_ID_AC3 &&
1213 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1214 if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1215 is_dvb_subtitle = 1;
1216 } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1217 is_dvb_teletext = 1;
1223 if (pts != AV_NOPTS_VALUE) {
1227 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1231 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1232 st->codec->codec_id == AV_CODEC_ID_DIRAC) {
1233 /* set PES_extension_flag */
1237 /* One byte for PES2 extension flag +
1238 * one byte for extension length +
1239 * one byte for extension id */
1242 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1243 * otherwise it will not play sound on blu-ray
1245 if (ts->m2ts_mode &&
1246 st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1247 st->codec->codec_id == AV_CODEC_ID_AC3) {
1248 /* set PES_extension_flag */
1253 if (is_dvb_teletext) {
1254 pes_header_stuffing_bytes = 0x24 - header_len;
1257 len = payload_size + header_len + 3;
1258 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1259 if (is_dvb_subtitle) {
1265 if (ts->omit_video_pes_length && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1271 /* data alignment indicator is required for subtitle and data streams */
1272 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA)
1277 if (pts != AV_NOPTS_VALUE) {
1278 write_pts(q, flags >> 6, pts);
1281 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1282 write_pts(q, 1, dts);
1285 if (pes_extension && st->codec->codec_id == AV_CODEC_ID_DIRAC) {
1286 flags = 0x01; /* set PES_extension_flag_2 */
1288 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1289 /* Set the stream ID extension flag bit to 0 and
1290 * write the extended stream ID. */
1293 /* For Blu-ray AC3 Audio Setting extended flags */
1294 if (ts->m2ts_mode &&
1296 st->codec->codec_id == AV_CODEC_ID_AC3) {
1297 flags = 0x01; /* set PES_extension_flag_2 */
1299 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1300 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1304 if (is_dvb_subtitle) {
1305 /* First two fields of DVB subtitles PES data:
1306 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1307 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1311 if (is_dvb_teletext) {
1312 memset(q, 0xff, pes_header_stuffing_bytes);
1313 q += pes_header_stuffing_bytes;
1318 header_len = q - buf;
1320 len = TS_PACKET_SIZE - header_len;
1321 if (len > payload_size)
1323 stuffing_len = TS_PACKET_SIZE - header_len - len;
1324 if (stuffing_len > 0) {
1325 /* add stuffing with AFC */
1326 if (buf[3] & 0x20) {
1327 /* stuffing already present: increase its size */
1328 afc_len = buf[4] + 1;
1329 memmove(buf + 4 + afc_len + stuffing_len,
1331 header_len - (4 + afc_len));
1332 buf[4] += stuffing_len;
1333 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1336 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1338 buf[4] = stuffing_len - 1;
1339 if (stuffing_len >= 2) {
1341 memset(buf + 6, 0xff, stuffing_len - 2);
1346 if (is_dvb_subtitle && payload_size == len) {
1347 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1348 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1350 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1354 payload_size -= len;
1355 mpegts_prefix_m2ts_header(s);
1356 avio_write(s->pb, buf, TS_PACKET_SIZE);
1358 ts_st->prev_payload_key = key;
1361 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1363 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1364 if (!st->nb_frames) {
1365 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1366 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1367 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1368 return AVERROR_INVALIDDATA;
1370 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1371 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1372 av_log(s, AV_LOG_WARNING, "\n");
1377 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1379 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1380 if (!st->nb_frames) {
1381 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1382 return AVERROR_PATCHWELCOME;
1384 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1385 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1386 av_log(s, AV_LOG_WARNING, "\n");
1391 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1392 * Released under the LGPL v2.1+, written by
1393 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1395 static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1397 static const int durations[32] = {
1398 480, 960, 1920, 2880, /* Silk NB */
1399 480, 960, 1920, 2880, /* Silk MB */
1400 480, 960, 1920, 2880, /* Silk WB */
1401 480, 960, /* Hybrid SWB */
1402 480, 960, /* Hybrid FB */
1403 120, 240, 480, 960, /* CELT NB */
1404 120, 240, 480, 960, /* CELT NB */
1405 120, 240, 480, 960, /* CELT NB */
1406 120, 240, 480, 960, /* CELT NB */
1408 int toc, frame_duration, nframes, duration;
1415 frame_duration = durations[toc >> 3];
1429 nframes = pkt->data[1] & 63;
1433 duration = nframes * frame_duration;
1434 if (duration > 5760) {
1435 av_log(s, AV_LOG_WARNING,
1436 "Opus packet duration > 120 ms, invalid");
1443 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1445 AVStream *st = s->streams[pkt->stream_index];
1446 int size = pkt->size;
1447 uint8_t *buf = pkt->data;
1448 uint8_t *data = NULL;
1449 MpegTSWrite *ts = s->priv_data;
1450 MpegTSWriteStream *ts_st = st->priv_data;
1451 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1452 int64_t dts = pkt->dts, pts = pkt->pts;
1453 int opus_samples = 0;
1455 if (ts->reemit_pat_pmt) {
1456 av_log(s, AV_LOG_WARNING,
1457 "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
1458 ts->reemit_pat_pmt = 0;
1459 ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT;
1462 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1463 ts->pat_packet_count = ts->pat_packet_period - 1;
1464 ts->sdt_packet_count = ts->sdt_packet_period - 1;
1465 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1468 if (ts->copyts < 1) {
1469 if (pts != AV_NOPTS_VALUE)
1471 if (dts != AV_NOPTS_VALUE)
1475 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
1476 av_log(s, AV_LOG_ERROR, "first pts value must be set\n");
1477 return AVERROR_INVALIDDATA;
1479 ts_st->first_pts_check = 0;
1481 if (st->codec->codec_id == AV_CODEC_ID_H264) {
1482 const uint8_t *p = buf, *buf_end = p + size;
1483 uint32_t state = -1;
1484 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codec->extradata_size : 0;
1485 int ret = ff_check_h264_startcode(s, st, pkt);
1489 if (extradd && AV_RB24(st->codec->extradata) > 1)
1493 p = avpriv_find_start_code(p, buf_end, &state);
1494 av_log(s, AV_LOG_TRACE, "nal %d\n", state & 0x1f);
1495 if ((state & 0x1f) == 7)
1497 } while (p < buf_end && (state & 0x1f) != 9 &&
1498 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1500 if ((state & 0x1f) != 5)
1502 if ((state & 0x1f) != 9) { // AUD NAL
1503 data = av_malloc(pkt->size + 6 + extradd);
1505 return AVERROR(ENOMEM);
1506 memcpy(data + 6, st->codec->extradata, extradd);
1507 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1508 AV_WB32(data, 0x00000001);
1510 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1512 size = pkt->size + 6 + extradd;
1514 } else if (st->codec->codec_id == AV_CODEC_ID_AAC) {
1515 if (pkt->size < 2) {
1516 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1517 return AVERROR_INVALIDDATA;
1519 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1524 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1525 "and extradata missing\n");
1527 return AVERROR_INVALIDDATA;
1529 av_init_packet(&pkt2);
1530 pkt2.data = pkt->data;
1531 pkt2.size = pkt->size;
1532 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1533 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1535 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1537 return AVERROR(ENOMEM);
1539 ret = av_write_frame(ts_st->amux, &pkt2);
1541 ffio_free_dyn_buf(&ts_st->amux->pb);
1544 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1545 ts_st->amux->pb = NULL;
1549 } else if (st->codec->codec_id == AV_CODEC_ID_HEVC) {
1550 int ret = check_hevc_startcode(s, st, pkt);
1553 } else if (st->codec->codec_id == AV_CODEC_ID_OPUS) {
1554 if (pkt->size < 2) {
1555 av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1556 return AVERROR_INVALIDDATA;
1559 /* Add Opus control header */
1560 if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1564 int ctrl_header_size;
1565 int trim_start = 0, trim_end = 0;
1567 opus_samples = opus_get_packet_samples(s, pkt);
1569 side_data = av_packet_get_side_data(pkt,
1570 AV_PKT_DATA_SKIP_SAMPLES,
1573 if (side_data && side_data_size >= 10) {
1574 trim_end = AV_RL32(side_data + 4) * 48000 / st->codec->sample_rate;
1577 ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1578 if (ts_st->opus_pending_trim_start)
1579 ctrl_header_size += 2;
1581 ctrl_header_size += 2;
1583 data = av_malloc(ctrl_header_size);
1585 return AVERROR(ENOMEM);
1589 if (ts_st->opus_pending_trim_start)
1597 data[i] = FFMIN(n, 255);
1602 av_assert0(2 + pkt->size / 255 + 1 == i);
1604 if (ts_st->opus_pending_trim_start) {
1605 trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1606 AV_WB16(data + i, trim_start);
1608 ts_st->opus_pending_trim_start -= trim_start;
1611 trim_end = FFMIN(trim_end, opus_samples - trim_start);
1612 AV_WB16(data + i, trim_end);
1616 memcpy(data + i, pkt->data, pkt->size);
1618 size = ctrl_header_size;
1620 /* TODO: Can we get TS formatted data here? If so we will
1621 * need to count the samples of that too! */
1622 av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1626 if (pkt->dts != AV_NOPTS_VALUE) {
1628 for(i=0; i<s->nb_streams; i++) {
1629 AVStream *st2 = s->streams[i];
1630 MpegTSWriteStream *ts_st2 = st2->priv_data;
1631 if ( ts_st2->payload_size
1632 && (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)) {
1633 mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size,
1634 ts_st2->payload_pts, ts_st2->payload_dts,
1635 ts_st2->payload_flags & AV_PKT_FLAG_KEY);
1636 ts_st2->payload_size = 0;
1641 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1642 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1643 av_compare_ts(dts - ts_st->payload_dts, st->time_base,
1644 s->max_delay, AV_TIME_BASE_Q) >= 0) ||
1645 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1646 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1647 ts_st->payload_pts, ts_st->payload_dts,
1648 ts_st->payload_flags & AV_PKT_FLAG_KEY);
1649 ts_st->payload_size = 0;
1650 ts_st->opus_queued_samples = 0;
1653 if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1654 av_assert0(!ts_st->payload_size);
1655 // for video and subtitle, write a single pes packet
1656 mpegts_write_pes(s, st, buf, size, pts, dts,
1657 pkt->flags & AV_PKT_FLAG_KEY);
1658 ts_st->opus_queued_samples = 0;
1663 if (!ts_st->payload_size) {
1664 ts_st->payload_pts = pts;
1665 ts_st->payload_dts = dts;
1666 ts_st->payload_flags = pkt->flags;
1669 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1670 ts_st->payload_size += size;
1671 ts_st->opus_queued_samples += opus_samples;
1678 static void mpegts_write_flush(AVFormatContext *s)
1682 /* flush current packets */
1683 for (i = 0; i < s->nb_streams; i++) {
1684 AVStream *st = s->streams[i];
1685 MpegTSWriteStream *ts_st = st->priv_data;
1686 if (ts_st->payload_size > 0) {
1687 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1688 ts_st->payload_pts, ts_st->payload_dts,
1689 ts_st->payload_flags & AV_PKT_FLAG_KEY);
1690 ts_st->payload_size = 0;
1691 ts_st->opus_queued_samples = 0;
1696 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
1699 mpegts_write_flush(s);
1702 return mpegts_write_packet_internal(s, pkt);
1706 static int mpegts_write_end(AVFormatContext *s)
1709 mpegts_write_flush(s);
1714 static void mpegts_deinit(AVFormatContext *s)
1716 MpegTSWrite *ts = s->priv_data;
1717 MpegTSService *service;
1720 for (i = 0; i < s->nb_streams; i++) {
1721 AVStream *st = s->streams[i];
1722 MpegTSWriteStream *ts_st = st->priv_data;
1724 av_freep(&ts_st->payload);
1726 avformat_free_context(ts_st->amux);
1732 for (i = 0; i < ts->nb_services; i++) {
1733 service = ts->services[i];
1734 av_freep(&service->provider_name);
1735 av_freep(&service->name);
1738 av_freep(&ts->services);
1741 static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
1744 AVStream *st = s->streams[pkt->stream_index];
1746 if (st->codec->codec_id == AV_CODEC_ID_H264) {
1747 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1748 AV_RB24(pkt->data) != 0x000001)
1749 ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
1750 } else if (st->codec->codec_id == AV_CODEC_ID_HEVC) {
1751 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1752 AV_RB24(pkt->data) != 0x000001)
1753 ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
1759 static const AVOption options[] = {
1760 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1761 offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
1762 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1763 { "mpegts_original_network_id", "Set original_network_id field.",
1764 offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT,
1765 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1766 { "mpegts_service_id", "Set service_id field.",
1767 offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
1768 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1769 { "mpegts_service_type", "Set service_type field.",
1770 offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT,
1771 { .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1772 { "digital_tv", "Digital Television.",
1773 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff,
1774 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1775 { "digital_radio", "Digital Radio.",
1776 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff,
1777 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1778 { "teletext", "Teletext.",
1779 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff,
1780 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1781 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
1782 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff,
1783 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1784 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
1785 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff,
1786 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1787 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
1788 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff,
1789 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1790 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
1791 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff,
1792 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1793 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
1794 offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT,
1795 { .i64 = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM },
1796 { "mpegts_start_pid", "Set the first pid.",
1797 offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT,
1798 { .i64 = 0x0100 }, 0x0020, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM },
1799 { "mpegts_m2ts_mode", "Enable m2ts mode.",
1800 offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_BOOL,
1801 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1803 offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
1804 { .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1805 { "pes_payload_size", "Minimum PES packet payload in bytes",
1806 offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT,
1807 { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1808 { "mpegts_flags", "MPEG-TS muxing flags",
1809 offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX,
1810 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1811 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1812 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
1813 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1814 { "latm", "Use LATM packetization for AAC",
1815 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
1816 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1817 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
1818 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX,
1819 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1820 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
1821 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX,
1822 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1823 // backward compatibility
1824 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1825 offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT,
1826 { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1827 { "mpegts_copyts", "don't offset dts/pts",
1828 offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_BOOL,
1829 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1830 { "tables_version", "set PAT, PMT and SDT version",
1831 offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT,
1832 { .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM },
1833 { "omit_video_pes_length", "Omit the PES packet length for video packets",
1834 offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_BOOL,
1835 { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
1836 { "pcr_period", "PCR retransmission time",
1837 offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT,
1838 { .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1839 { "pat_period", "PAT/PMT retransmission time limit in seconds",
1840 offsetof(MpegTSWrite, pat_period), AV_OPT_TYPE_DOUBLE,
1841 { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1842 { "sdt_period", "SDT retransmission time limit in seconds",
1843 offsetof(MpegTSWrite, sdt_period), AV_OPT_TYPE_DOUBLE,
1844 { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1848 static const AVClass mpegts_muxer_class = {
1849 .class_name = "MPEGTS muxer",
1850 .item_name = av_default_item_name,
1852 .version = LIBAVUTIL_VERSION_INT,
1855 AVOutputFormat ff_mpegts_muxer = {
1857 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
1858 .mime_type = "video/MP2T",
1859 .extensions = "ts,m2t,m2ts,mts",
1860 .priv_data_size = sizeof(MpegTSWrite),
1861 .audio_codec = AV_CODEC_ID_MP2,
1862 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
1863 .init = mpegts_init,
1864 .write_packet = mpegts_write_packet,
1865 .write_trailer = mpegts_write_end,
1866 .deinit = mpegts_deinit,
1867 .check_bitstream = mpegts_check_bitstream,
1868 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS,
1869 .priv_class = &mpegts_muxer_class,