2 * MPEG-2 transport stream (aka DVB) demuxer
3 * Copyright (c) 2002-2003 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/buffer.h"
23 #include "libavutil/crc.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/log.h"
26 #include "libavutil/dict.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/opt.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavcodec/get_bits.h"
31 #include "libavcodec/opus.h"
35 #include "avio_internal.h"
39 /* maximum size in which we look for synchronization if
40 * synchronization is lost */
41 #define MAX_RESYNC_SIZE 65536
43 #define MAX_PES_PAYLOAD 200 * 1024
45 #define MAX_MP4_DESCR_COUNT 16
47 #define MOD_UNLIKELY(modulus, dividend, divisor, prev_dividend) \
49 if ((prev_dividend) == 0 || (dividend) - (prev_dividend) != (divisor)) \
50 (modulus) = (dividend) % (divisor); \
51 (prev_dividend) = (dividend); \
54 enum MpegTSFilterType {
59 typedef struct MpegTSFilter MpegTSFilter;
61 typedef int PESCallback (MpegTSFilter *f, const uint8_t *buf, int len,
62 int is_start, int64_t pos);
64 typedef struct MpegTSPESFilter {
69 typedef void SectionCallback (MpegTSFilter *f, const uint8_t *buf, int len);
71 typedef void SetServiceCallback (void *opaque, int ret);
73 typedef struct MpegTSSectionFilter {
78 unsigned int check_crc : 1;
79 unsigned int end_of_section_reached : 1;
80 SectionCallback *section_cb;
82 } MpegTSSectionFilter;
87 int last_cc; /* last cc code (-1 if first packet) */
88 enum MpegTSFilterType type;
90 MpegTSPESFilter pes_filter;
91 MpegTSSectionFilter section_filter;
95 #define MAX_PIDS_PER_PROGRAM 64
97 unsigned int id; // program id/service id
99 unsigned int pids[MAX_PIDS_PER_PROGRAM];
102 struct MpegTSContext {
103 const AVClass *class;
105 AVFormatContext *stream;
106 /** raw packet size, including FEC if present */
110 /** position corresponding to pos47, or 0 if pos47 invalid */
113 /** if true, all pids are analyzed to find streams */
116 /** compute exact PCR for each transport stream packet */
117 int mpeg2ts_compute_pcr;
119 int64_t cur_pcr; /**< used to estimate the exact PCR */
120 int pcr_incr; /**< used to estimate the exact PCR */
122 /* data needed to handle file based ts */
123 /** stop parsing loop */
125 /** packet containing Audio/Video data */
127 /** to detect seek */
132 /******************************************/
133 /* private mpegts data */
135 /** structure to keep track of Program->pids mapping */
139 /** filters for various streams specified by PMT + for the PAT and PMT */
140 MpegTSFilter *pids[NB_PID_MAX];
143 #define MPEGTS_OPTIONS \
144 { "resync_size", "Size limit for looking up a new synchronization.", offsetof(MpegTSContext, resync_size), AV_OPT_TYPE_INT, { .i64 = MAX_RESYNC_SIZE}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }
146 static const AVOption options[] = {
151 static const AVClass mpegts_class = {
152 .class_name = "mpegts demuxer",
153 .item_name = av_default_item_name,
155 .version = LIBAVUTIL_VERSION_INT,
158 static const AVOption raw_options[] = {
160 { "compute_pcr", "Compute exact PCR for each transport stream packet.",
161 offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT,
162 { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
163 { "ts_packetsize", "Output option carrying the raw packet size.",
164 offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT,
166 AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
170 static const AVClass mpegtsraw_class = {
171 .class_name = "mpegtsraw demuxer",
172 .item_name = av_default_item_name,
173 .option = raw_options,
174 .version = LIBAVUTIL_VERSION_INT,
177 /* TS stream handling */
182 MPEGTS_PESHEADER_FILL,
187 /* enough for PES header + length */
188 #define PES_START_SIZE 6
189 #define PES_HEADER_SIZE 9
190 #define MAX_PES_HEADER_SIZE (9 + 255)
192 typedef struct PESContext {
194 int pcr_pid; /**< if -1 then all packets containing PCR are considered */
197 AVFormatContext *stream;
199 AVStream *sub_st; /**< stream for the embedded AC3 stream in HDMV TrueHD */
200 enum MpegTSState state;
201 /* used to get the format */
203 int flags; /**< copied to the AVPacket flags */
206 int extended_stream_id;
208 int64_t ts_packet_pos; /**< position of first TS packet of this PES packet */
209 uint8_t header[MAX_PES_HEADER_SIZE];
214 extern AVInputFormat ff_mpegts_demuxer;
216 static void clear_program(MpegTSContext *ts, unsigned int programid)
220 for (i = 0; i < ts->nb_prg; i++)
221 if (ts->prg[i].id == programid)
222 ts->prg[i].nb_pids = 0;
225 static void clear_programs(MpegTSContext *ts)
231 static void add_pat_entry(MpegTSContext *ts, unsigned int programid)
234 if (av_reallocp_array(&ts->prg, ts->nb_prg + 1, sizeof(*ts->prg)) < 0) {
238 p = &ts->prg[ts->nb_prg];
244 static void add_pid_to_pmt(MpegTSContext *ts, unsigned int programid,
248 struct Program *p = NULL;
249 for (i = 0; i < ts->nb_prg; i++) {
250 if (ts->prg[i].id == programid) {
258 if (p->nb_pids >= MAX_PIDS_PER_PROGRAM)
260 p->pids[p->nb_pids++] = pid;
264 * @brief discard_pid() decides if the pid is to be discarded according
265 * to caller's programs selection
266 * @param ts : - TS context
268 * @return 1 if the pid is only comprised in programs that have .discard=AVDISCARD_ALL
271 static int discard_pid(MpegTSContext *ts, unsigned int pid)
274 int used = 0, discarded = 0;
277 /* If none of the programs have .discard=AVDISCARD_ALL then there's
278 * no way we have to discard this packet */
279 for (k = 0; k < ts->stream->nb_programs; k++)
280 if (ts->stream->programs[k]->discard == AVDISCARD_ALL)
282 if (k == ts->stream->nb_programs)
285 for (i = 0; i < ts->nb_prg; i++) {
287 for (j = 0; j < p->nb_pids; j++) {
288 if (p->pids[j] != pid)
290 // is program with id p->id set to be discarded?
291 for (k = 0; k < ts->stream->nb_programs; k++) {
292 if (ts->stream->programs[k]->id == p->id) {
293 if (ts->stream->programs[k]->discard == AVDISCARD_ALL)
302 return !used && discarded;
306 * Assemble PES packets out of TS packets, and then call the "section_cb"
307 * function when they are complete.
309 static void write_section_data(MpegTSContext *ts, MpegTSFilter *tss1,
310 const uint8_t *buf, int buf_size, int is_start)
312 MpegTSSectionFilter *tss = &tss1->u.section_filter;
316 memcpy(tss->section_buf, buf, buf_size);
317 tss->section_index = buf_size;
318 tss->section_h_size = -1;
319 tss->end_of_section_reached = 0;
321 if (tss->end_of_section_reached)
323 len = 4096 - tss->section_index;
326 memcpy(tss->section_buf + tss->section_index, buf, len);
327 tss->section_index += len;
330 /* compute section length if possible */
331 if (tss->section_h_size == -1 && tss->section_index >= 3) {
332 len = (AV_RB16(tss->section_buf + 1) & 0xfff) + 3;
335 tss->section_h_size = len;
338 if (tss->section_h_size != -1 &&
339 tss->section_index >= tss->section_h_size) {
340 tss->end_of_section_reached = 1;
341 if (!tss->check_crc ||
342 av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1,
343 tss->section_buf, tss->section_h_size) == 0)
344 tss->section_cb(tss1, tss->section_buf, tss->section_h_size);
348 static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts,
350 SectionCallback *section_cb,
354 MpegTSFilter *filter;
355 MpegTSSectionFilter *sec;
357 av_log(ts->stream, AV_LOG_TRACE, "Filter: pid=0x%x\n", pid);
359 if (pid >= NB_PID_MAX || ts->pids[pid])
361 filter = av_mallocz(sizeof(MpegTSFilter));
364 ts->pids[pid] = filter;
366 filter->type = MPEGTS_SECTION;
369 filter->last_cc = -1;
371 sec = &filter->u.section_filter;
372 sec->section_cb = section_cb;
373 sec->opaque = opaque;
374 sec->section_buf = av_malloc(MAX_SECTION_SIZE);
375 sec->check_crc = check_crc;
378 if (!sec->section_buf) {
385 static MpegTSFilter *mpegts_open_pes_filter(MpegTSContext *ts, unsigned int pid,
389 MpegTSFilter *filter;
390 MpegTSPESFilter *pes;
392 if (pid >= NB_PID_MAX || ts->pids[pid])
394 filter = av_mallocz(sizeof(MpegTSFilter));
398 ts->pids[pid] = filter;
399 filter->type = MPEGTS_PES;
402 filter->last_cc = -1;
404 pes = &filter->u.pes_filter;
405 pes->pes_cb = pes_cb;
406 pes->opaque = opaque;
410 static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
415 if (filter->type == MPEGTS_SECTION)
416 av_freep(&filter->u.section_filter.section_buf);
417 else if (filter->type == MPEGTS_PES) {
418 PESContext *pes = filter->u.pes_filter.opaque;
419 av_buffer_unref(&pes->buffer);
420 /* referenced private data will be freed later in
421 * avformat_close_input */
422 if (!((PESContext *)filter->u.pes_filter.opaque)->st) {
423 av_freep(&filter->u.pes_filter.opaque);
428 ts->pids[pid] = NULL;
431 static int analyze(const uint8_t *buf, int size, int packet_size, int *index,
434 int stat[TS_MAX_PACKET_SIZE];
439 memset(stat, 0, packet_size * sizeof(int));
441 for (x = i = 0; i < size - 3; i++) {
442 if (buf[i] == 0x47 &&
443 (!probe || (!(buf[i + 1] & 0x80) && (buf[i + 3] & 0x30)))) {
445 if (stat[x] > best_score) {
446 best_score = stat[x];
453 if (x == packet_size)
460 /* autodetect fec presence. Must have at least 1024 bytes */
461 static int get_packet_size(const uint8_t *buf, int size)
463 int score, fec_score, dvhs_score;
465 if (size < (TS_FEC_PACKET_SIZE * 5 + 1))
466 return AVERROR_INVALIDDATA;
468 score = analyze(buf, size, TS_PACKET_SIZE, NULL, 0);
469 dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, NULL, 0);
470 fec_score = analyze(buf, size, TS_FEC_PACKET_SIZE, NULL, 0);
471 av_log(NULL, AV_LOG_TRACE, "score: %d, dvhs_score: %d, fec_score: %d \n",
472 score, dvhs_score, fec_score);
474 if (score > fec_score && score > dvhs_score)
475 return TS_PACKET_SIZE;
476 else if (dvhs_score > score && dvhs_score > fec_score)
477 return TS_DVHS_PACKET_SIZE;
478 else if (score < fec_score && dvhs_score < fec_score)
479 return TS_FEC_PACKET_SIZE;
481 return AVERROR_INVALIDDATA;
484 typedef struct SectionHeader {
489 uint8_t last_sec_num;
492 static inline int get8(const uint8_t **pp, const uint8_t *p_end)
499 return AVERROR_INVALIDDATA;
505 static inline int get16(const uint8_t **pp, const uint8_t *p_end)
511 if ((p + 1) >= p_end)
512 return AVERROR_INVALIDDATA;
519 /* read and allocate a DVB string preceded by its length */
520 static char *getstr8(const uint8_t **pp, const uint8_t *p_end)
527 len = get8(&p, p_end);
530 if ((p + len) > p_end)
532 str = av_malloc(len + 1);
542 static int parse_section_header(SectionHeader *h,
543 const uint8_t **pp, const uint8_t *p_end)
547 val = get8(pp, p_end);
552 val = get16(pp, p_end);
556 val = get8(pp, p_end);
559 h->version = (val >> 1) & 0x1f;
560 val = get8(pp, p_end);
564 val = get8(pp, p_end);
567 h->last_sec_num = val;
571 typedef struct StreamType {
572 uint32_t stream_type;
573 enum AVMediaType codec_type;
574 enum AVCodecID codec_id;
577 static const StreamType ISO_types[] = {
578 { 0x01, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
579 { 0x02, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
580 { 0x03, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
581 { 0x04, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
582 { 0x0f, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC },
583 { 0x10, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG4 },
584 { 0x11, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC_LATM }, /* LATM syntax */
585 { 0x1b, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 },
586 { 0x21, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_JPEG2000 },
587 { 0x24, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC },
588 { 0x42, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_CAVS },
589 { 0xd1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
590 { 0xea, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
594 static const StreamType HDMV_types[] = {
595 { 0x80, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_BLURAY },
596 { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
597 { 0x82, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
598 { 0x83, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_TRUEHD },
599 { 0x84, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
600 { 0x85, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD */
601 { 0x86, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD MASTER*/
602 { 0x90, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_HDMV_PGS_SUBTITLE },
607 static const StreamType MISC_types[] = {
608 { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
609 { 0x8a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
613 static const StreamType REGD_types[] = {
614 { MKTAG('d', 'r', 'a', 'c'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
615 { MKTAG('A', 'C', '-', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
616 { MKTAG('B', 'S', 'S', 'D'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_S302M },
617 { MKTAG('D', 'T', 'S', '1'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
618 { MKTAG('D', 'T', 'S', '2'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
619 { MKTAG('D', 'T', 'S', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
620 { MKTAG('H', 'E', 'V', 'C'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC },
621 { MKTAG('V', 'C', '-', '1'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
622 { MKTAG('O', 'p', 'u', 's'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_OPUS },
626 /* descriptor present */
627 static const StreamType DESC_types[] = {
628 { 0x6a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, /* AC-3 descriptor */
629 { 0x7a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC-3 descriptor */
630 { 0x7b, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
631 { 0x56, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_TELETEXT },
632 { 0x59, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_SUBTITLE }, /* subtitling descriptor */
636 static void mpegts_find_stream_type(AVStream *st,
637 uint32_t stream_type,
638 const StreamType *types)
640 for (; types->stream_type; types++)
641 if (stream_type == types->stream_type) {
642 st->codecpar->codec_type = types->codec_type;
643 st->codecpar->codec_id = types->codec_id;
648 static int mpegts_set_stream_info(AVStream *st, PESContext *pes,
649 uint32_t stream_type, uint32_t prog_reg_desc)
651 avpriv_set_pts_info(st, 33, 1, 90000);
653 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
654 st->codecpar->codec_id = AV_CODEC_ID_NONE;
655 st->need_parsing = AVSTREAM_PARSE_FULL;
657 pes->stream_type = stream_type;
659 av_log(pes->stream, AV_LOG_DEBUG,
660 "stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n",
661 st->index, pes->stream_type, pes->pid, (char *)&prog_reg_desc);
663 st->codecpar->codec_tag = pes->stream_type;
665 mpegts_find_stream_type(st, pes->stream_type, ISO_types);
666 if (prog_reg_desc == AV_RL32("HDMV") &&
667 st->codecpar->codec_id == AV_CODEC_ID_NONE) {
668 mpegts_find_stream_type(st, pes->stream_type, HDMV_types);
669 if (pes->stream_type == 0x83) {
670 // HDMV TrueHD streams also contain an AC3 coded version of the
671 // audio track - add a second stream for this
673 // priv_data cannot be shared between streams
674 PESContext *sub_pes = av_malloc(sizeof(*sub_pes));
676 return AVERROR(ENOMEM);
677 memcpy(sub_pes, pes, sizeof(*sub_pes));
679 sub_st = avformat_new_stream(pes->stream, NULL);
682 return AVERROR(ENOMEM);
685 sub_st->id = pes->pid;
686 avpriv_set_pts_info(sub_st, 33, 1, 90000);
687 sub_st->priv_data = sub_pes;
688 sub_st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
689 sub_st->codecpar->codec_id = AV_CODEC_ID_AC3;
690 sub_st->need_parsing = AVSTREAM_PARSE_FULL;
691 sub_pes->sub_st = pes->sub_st = sub_st;
694 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
695 mpegts_find_stream_type(st, pes->stream_type, MISC_types);
700 static void new_pes_packet(PESContext *pes, AVPacket *pkt)
704 pkt->buf = pes->buffer;
705 pkt->data = pes->buffer->data;
706 pkt->size = pes->data_index;
708 if (pes->total_size != MAX_PES_PAYLOAD &&
709 pes->pes_header_size + pes->data_index != pes->total_size +
711 av_log(pes->stream, AV_LOG_WARNING, "PES packet size mismatch\n");
712 pes->flags |= AV_PKT_FLAG_CORRUPT;
714 memset(pkt->data + pkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
716 // Separate out the AC3 substream from an HDMV combined TrueHD/AC3 PID
717 if (pes->sub_st && pes->stream_type == 0x83 && pes->extended_stream_id == 0x76)
718 pkt->stream_index = pes->sub_st->index;
720 pkt->stream_index = pes->st->index;
723 /* store position of first TS packet of this PES packet */
724 pkt->pos = pes->ts_packet_pos;
725 pkt->flags = pes->flags;
727 /* reset pts values */
728 pes->pts = AV_NOPTS_VALUE;
729 pes->dts = AV_NOPTS_VALUE;
735 static int read_sl_header(PESContext *pes, SLConfigDescr *sl,
736 const uint8_t *buf, int buf_size)
739 int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0;
740 int padding_flag = 0, padding_bits = 0, inst_bitrate_flag = 0;
741 int dts_flag = -1, cts_flag = -1;
742 int64_t dts = AV_NOPTS_VALUE, cts = AV_NOPTS_VALUE;
743 init_get_bits(&gb, buf, buf_size * 8);
745 if (sl->use_au_start)
746 au_start_flag = get_bits1(&gb);
748 au_end_flag = get_bits1(&gb);
749 if (!sl->use_au_start && !sl->use_au_end)
750 au_start_flag = au_end_flag = 1;
752 ocr_flag = get_bits1(&gb);
754 idle_flag = get_bits1(&gb);
756 padding_flag = get_bits1(&gb);
758 padding_bits = get_bits(&gb, 3);
760 if (!idle_flag && (!padding_flag || padding_bits != 0)) {
761 if (sl->packet_seq_num_len)
762 skip_bits_long(&gb, sl->packet_seq_num_len);
763 if (sl->degr_prior_len)
765 skip_bits(&gb, sl->degr_prior_len);
767 skip_bits_long(&gb, sl->ocr_len);
769 if (sl->use_rand_acc_pt)
771 if (sl->au_seq_num_len > 0)
772 skip_bits_long(&gb, sl->au_seq_num_len);
773 if (sl->use_timestamps) {
774 dts_flag = get_bits1(&gb);
775 cts_flag = get_bits1(&gb);
778 if (sl->inst_bitrate_len)
779 inst_bitrate_flag = get_bits1(&gb);
781 dts = get_bits64(&gb, sl->timestamp_len);
783 cts = get_bits64(&gb, sl->timestamp_len);
785 skip_bits_long(&gb, sl->au_len);
786 if (inst_bitrate_flag)
787 skip_bits_long(&gb, sl->inst_bitrate_len);
790 if (dts != AV_NOPTS_VALUE)
792 if (cts != AV_NOPTS_VALUE)
795 if (sl->timestamp_len && sl->timestamp_res)
796 avpriv_set_pts_info(pes->st, sl->timestamp_len, 1, sl->timestamp_res);
798 return (get_bits_count(&gb) + 7) >> 3;
801 /* return non zero if a packet could be constructed */
802 static int mpegts_push_data(MpegTSFilter *filter,
803 const uint8_t *buf, int buf_size, int is_start,
806 PESContext *pes = filter->u.pes_filter.opaque;
807 MpegTSContext *ts = pes->ts;
815 if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
816 new_pes_packet(pes, ts->pkt);
819 pes->state = MPEGTS_HEADER;
821 pes->ts_packet_pos = pos;
824 while (buf_size > 0) {
825 switch (pes->state) {
827 len = PES_START_SIZE - pes->data_index;
830 memcpy(pes->header + pes->data_index, p, len);
831 pes->data_index += len;
834 if (pes->data_index == PES_START_SIZE) {
835 /* we got all the PES or section header. We can now
837 if (pes->header[0] == 0x00 && pes->header[1] == 0x00 &&
838 pes->header[2] == 0x01) {
839 /* it must be an MPEG-2 PES stream */
840 code = pes->header[3] | 0x100;
841 av_log(pes->stream, AV_LOG_TRACE, "pid=%x pes_code=%#x\n", pes->pid,
844 if ((pes->st && pes->st->discard == AVDISCARD_ALL &&
846 pes->sub_st->discard == AVDISCARD_ALL)) ||
847 code == 0x1be) /* padding_stream */
850 /* stream not present in PMT */
852 pes->st = avformat_new_stream(ts->stream, NULL);
854 return AVERROR(ENOMEM);
855 pes->st->id = pes->pid;
856 mpegts_set_stream_info(pes->st, pes, 0, 0);
859 pes->total_size = AV_RB16(pes->header + 4);
860 /* NOTE: a zero total size means the PES size is
862 if (!pes->total_size)
863 pes->total_size = MAX_PES_PAYLOAD;
865 /* allocate pes buffer */
866 pes->buffer = av_buffer_alloc(pes->total_size +
867 AV_INPUT_BUFFER_PADDING_SIZE);
869 return AVERROR(ENOMEM);
871 if (code != 0x1bc && code != 0x1bf && /* program_stream_map, private_stream_2 */
872 code != 0x1f0 && code != 0x1f1 && /* ECM, EMM */
873 code != 0x1ff && code != 0x1f2 && /* program_stream_directory, DSMCC_stream */
874 code != 0x1f8) { /* ITU-T Rec. H.222.1 type E stream */
875 pes->state = MPEGTS_PESHEADER;
876 if (pes->st->codecpar->codec_id == AV_CODEC_ID_NONE) {
877 av_log(pes->stream, AV_LOG_TRACE,
878 "pid=%x stream_type=%x probing\n",
881 pes->st->codecpar->codec_id = AV_CODEC_ID_PROBE;
884 pes->state = MPEGTS_PAYLOAD;
888 /* otherwise, it should be a table */
891 pes->state = MPEGTS_SKIP;
896 /**********************************************/
897 /* PES packing parsing */
898 case MPEGTS_PESHEADER:
899 len = PES_HEADER_SIZE - pes->data_index;
901 return AVERROR_INVALIDDATA;
904 memcpy(pes->header + pes->data_index, p, len);
905 pes->data_index += len;
908 if (pes->data_index == PES_HEADER_SIZE) {
909 pes->pes_header_size = pes->header[8] + 9;
910 pes->state = MPEGTS_PESHEADER_FILL;
913 case MPEGTS_PESHEADER_FILL:
914 len = pes->pes_header_size - pes->data_index;
916 return AVERROR_INVALIDDATA;
919 memcpy(pes->header + pes->data_index, p, len);
920 pes->data_index += len;
923 if (pes->data_index == pes->pes_header_size) {
925 unsigned int flags, pes_ext, skip;
927 flags = pes->header[7];
929 pes->pts = AV_NOPTS_VALUE;
930 pes->dts = AV_NOPTS_VALUE;
931 if ((flags & 0xc0) == 0x80) {
932 pes->dts = pes->pts = ff_parse_pes_pts(r);
934 } else if ((flags & 0xc0) == 0xc0) {
935 pes->pts = ff_parse_pes_pts(r);
937 pes->dts = ff_parse_pes_pts(r);
940 pes->extended_stream_id = -1;
941 if (flags & 0x01) { /* PES extension */
943 /* Skip PES private data, program packet sequence counter and P-STD buffer */
944 skip = (pes_ext >> 4) & 0xb;
947 if ((pes_ext & 0x41) == 0x01 &&
948 (r + 2) <= (pes->header + pes->pes_header_size)) {
949 /* PES extension 2 */
950 if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
951 pes->extended_stream_id = r[1];
955 /* we got the full header. We parse it and get the payload */
956 pes->state = MPEGTS_PAYLOAD;
958 if (pes->stream_type == 0x12 && buf_size > 0) {
959 int sl_header_bytes = read_sl_header(pes, &pes->sl, p,
961 pes->pes_header_size += sl_header_bytes;
962 p += sl_header_bytes;
963 buf_size -= sl_header_bytes;
968 if (buf_size > 0 && pes->buffer) {
969 if (pes->data_index > 0 &&
970 pes->data_index + buf_size > pes->total_size) {
971 new_pes_packet(pes, ts->pkt);
972 pes->total_size = MAX_PES_PAYLOAD;
973 pes->buffer = av_buffer_alloc(pes->total_size +
974 AV_INPUT_BUFFER_PADDING_SIZE);
976 return AVERROR(ENOMEM);
978 } else if (pes->data_index == 0 &&
979 buf_size > pes->total_size) {
980 // pes packet size is < ts size packet and pes data is padded with 0xff
981 // not sure if this is legal in ts but see issue #2392
982 buf_size = pes->total_size;
984 memcpy(pes->buffer->data + pes->data_index, p, buf_size);
985 pes->data_index += buf_size;
988 /* emit complete packets with known packet size
989 * decreases demuxer delay for infrequent packets like subtitles from
990 * a couple of seconds to milliseconds for properly muxed files.
991 * total_size is the number of bytes following pes_packet_length
992 * in the pes header, i.e. not counting the first PES_START_SIZE bytes */
993 if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD &&
994 pes->pes_header_size + pes->data_index == pes->total_size + PES_START_SIZE) {
996 new_pes_packet(pes, ts->pkt);
1008 static PESContext *add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid)
1013 /* if no pid found, then add a pid context */
1014 pes = av_mallocz(sizeof(PESContext));
1018 pes->stream = ts->stream;
1020 pes->pcr_pid = pcr_pid;
1021 pes->state = MPEGTS_SKIP;
1022 pes->pts = AV_NOPTS_VALUE;
1023 pes->dts = AV_NOPTS_VALUE;
1024 tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes);
1033 typedef struct MP4DescrParseContext {
1037 Mp4Descr *active_descr;
1039 int max_descr_count;
1041 } MP4DescrParseContext;
1043 static int init_MP4DescrParseContext(MP4DescrParseContext *d, AVFormatContext *s,
1044 const uint8_t *buf, unsigned size,
1045 Mp4Descr *descr, int max_descr_count)
1048 if (size > (1 << 30))
1049 return AVERROR_INVALIDDATA;
1051 if ((ret = ffio_init_context(&d->pb, (unsigned char *)buf, size, 0,
1052 NULL, NULL, NULL, NULL)) < 0)
1059 d->active_descr = NULL;
1060 d->max_descr_count = max_descr_count;
1065 static void update_offsets(AVIOContext *pb, int64_t *off, int *len)
1067 int64_t new_off = avio_tell(pb);
1068 (*len) -= new_off - *off;
1072 static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
1075 static int parse_mp4_descr_arr(MP4DescrParseContext *d, int64_t off, int len)
1078 int ret = parse_mp4_descr(d, off, len, 0);
1081 update_offsets(&d->pb, &off, &len);
1086 static int parse_MP4IODescrTag(MP4DescrParseContext *d, int64_t off, int len)
1088 avio_rb16(&d->pb); // ID
1094 update_offsets(&d->pb, &off, &len);
1095 return parse_mp4_descr_arr(d, off, len);
1098 static int parse_MP4ODescrTag(MP4DescrParseContext *d, int64_t off, int len)
1103 id_flags = avio_rb16(&d->pb);
1104 if (!(id_flags & 0x0020)) { // URL_Flag
1105 update_offsets(&d->pb, &off, &len);
1106 return parse_mp4_descr_arr(d, off, len); // ES_Descriptor[]
1112 static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len)
1117 if (d->descr_count >= d->max_descr_count)
1118 return AVERROR_INVALIDDATA;
1119 ff_mp4_parse_es_descr(&d->pb, &es_id);
1120 d->active_descr = d->descr + (d->descr_count++);
1122 d->active_descr->es_id = es_id;
1123 update_offsets(&d->pb, &off, &len);
1124 if ((ret = parse_mp4_descr(d, off, len, MP4DecConfigDescrTag)) < 0)
1126 update_offsets(&d->pb, &off, &len);
1128 ret = parse_mp4_descr(d, off, len, MP4SLDescrTag);
1129 d->active_descr = NULL;
1133 static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off,
1136 Mp4Descr *descr = d->active_descr;
1138 return AVERROR_INVALIDDATA;
1139 d->active_descr->dec_config_descr = av_malloc(len);
1140 if (!descr->dec_config_descr)
1141 return AVERROR(ENOMEM);
1142 descr->dec_config_descr_len = len;
1143 avio_read(&d->pb, descr->dec_config_descr, len);
1147 static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len)
1149 Mp4Descr *descr = d->active_descr;
1152 return AVERROR_INVALIDDATA;
1154 predefined = avio_r8(&d->pb);
1157 int flags = avio_r8(&d->pb);
1158 descr->sl.use_au_start = !!(flags & 0x80);
1159 descr->sl.use_au_end = !!(flags & 0x40);
1160 descr->sl.use_rand_acc_pt = !!(flags & 0x20);
1161 descr->sl.use_padding = !!(flags & 0x08);
1162 descr->sl.use_timestamps = !!(flags & 0x04);
1163 descr->sl.use_idle = !!(flags & 0x02);
1164 descr->sl.timestamp_res = avio_rb32(&d->pb);
1166 descr->sl.timestamp_len = avio_r8(&d->pb);
1167 descr->sl.ocr_len = avio_r8(&d->pb);
1168 descr->sl.au_len = avio_r8(&d->pb);
1169 descr->sl.inst_bitrate_len = avio_r8(&d->pb);
1170 lengths = avio_rb16(&d->pb);
1171 descr->sl.degr_prior_len = lengths >> 12;
1172 descr->sl.au_seq_num_len = (lengths >> 7) & 0x1f;
1173 descr->sl.packet_seq_num_len = (lengths >> 2) & 0x1f;
1174 if (descr->sl.timestamp_len >= 64 ||
1175 descr->sl.ocr_len >= 64 ||
1176 descr->sl.au_len >= 32) {
1177 return AVERROR_INVALIDDATA;
1180 avpriv_report_missing_feature(d->s, "Predefined SLConfigDescriptor");
1185 static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
1189 int len1 = ff_mp4_read_descr(d->s, &d->pb, &tag);
1192 update_offsets(&d->pb, &off, &len);
1193 if (len < 0 || len1 > len || len1 <= 0) {
1194 av_log(d->s, AV_LOG_ERROR,
1195 "Tag %x length violation new length %d bytes remaining %d\n",
1197 return AVERROR_INVALIDDATA;
1200 if (d->level++ >= MAX_LEVEL) {
1201 av_log(d->s, AV_LOG_ERROR, "Maximum MP4 descriptor level exceeded\n");
1202 ret = AVERROR_INVALIDDATA;
1206 if (target_tag && tag != target_tag) {
1207 av_log(d->s, AV_LOG_ERROR, "Found tag %x expected %x\n", tag,
1209 ret = AVERROR_INVALIDDATA;
1215 ret = parse_MP4IODescrTag(d, off, len1);
1218 ret = parse_MP4ODescrTag(d, off, len1);
1221 ret = parse_MP4ESDescrTag(d, off, len1);
1223 case MP4DecConfigDescrTag:
1224 ret = parse_MP4DecConfigDescrTag(d, off, len1);
1227 ret = parse_MP4SLDescrTag(d, off, len1);
1234 avio_seek(&d->pb, off + len1, SEEK_SET);
1238 static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size,
1239 Mp4Descr *descr, int *descr_count, int max_descr_count)
1241 MP4DescrParseContext d;
1244 ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count);
1248 ret = parse_mp4_descr(&d, avio_tell(&d.pb), size, MP4IODescrTag);
1250 *descr_count = d.descr_count;
1254 static int mp4_read_od(AVFormatContext *s, const uint8_t *buf, unsigned size,
1255 Mp4Descr *descr, int *descr_count, int max_descr_count)
1257 MP4DescrParseContext d;
1260 ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count);
1264 ret = parse_mp4_descr_arr(&d, avio_tell(&d.pb), size);
1266 *descr_count = d.descr_count;
1270 static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section,
1273 MpegTSContext *ts = filter->u.section_filter.opaque;
1274 MpegTSSectionFilter *tssf = &filter->u.section_filter;
1276 const uint8_t *p, *p_end;
1278 int mp4_descr_count = 0;
1279 Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } };
1281 AVFormatContext *s = ts->stream;
1283 p_end = section + section_len - 4;
1285 if (parse_section_header(&h, &p, p_end) < 0)
1287 if (h.tid != M4OD_TID)
1289 if (h.version == tssf->last_ver)
1291 tssf->last_ver = h.version;
1293 mp4_read_od(s, p, (unsigned) (p_end - p), mp4_descr, &mp4_descr_count,
1294 MAX_MP4_DESCR_COUNT);
1296 for (pid = 0; pid < NB_PID_MAX; pid++) {
1299 for (i = 0; i < mp4_descr_count; i++) {
1302 if (ts->pids[pid]->es_id != mp4_descr[i].es_id)
1304 if (!(ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES)) {
1305 av_log(s, AV_LOG_ERROR, "pid %x is not PES\n", pid);
1308 pes = ts->pids[pid]->u.pes_filter.opaque;
1313 pes->sl = mp4_descr[i].sl;
1315 ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
1316 mp4_descr[i].dec_config_descr_len, 0,
1317 NULL, NULL, NULL, NULL);
1318 ff_mp4_read_dec_config_descr(s, st, &pb);
1319 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1320 st->codecpar->extradata_size > 0)
1321 st->need_parsing = 0;
1322 if (st->codecpar->codec_id == AV_CODEC_ID_H264 &&
1323 st->codecpar->extradata_size > 0)
1324 st->need_parsing = 0;
1326 st->codecpar->codec_type = avcodec_get_type(st->codecpar->codec_id);
1329 for (i = 0; i < mp4_descr_count; i++)
1330 av_free(mp4_descr[i].dec_config_descr);
1333 static const uint8_t opus_coupled_stream_cnt[9] = {
1334 1, 0, 1, 1, 2, 2, 2, 3, 3
1337 static const uint8_t opus_stream_cnt[9] = {
1338 1, 1, 1, 2, 2, 3, 4, 4, 5,
1341 static const uint8_t opus_channel_map[8][8] = {
1349 { 0,6,1,2,3,4,5,7 },
1352 int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type,
1353 const uint8_t **pp, const uint8_t *desc_list_end,
1354 Mp4Descr *mp4_descr, int mp4_descr_count, int pid,
1357 const uint8_t *desc_end;
1358 int desc_len, desc_tag, desc_es_id, ext_desc_tag, channels, channel_config_code;
1362 desc_tag = get8(pp, desc_list_end);
1364 return AVERROR_INVALIDDATA;
1365 desc_len = get8(pp, desc_list_end);
1367 return AVERROR_INVALIDDATA;
1368 desc_end = *pp + desc_len;
1369 if (desc_end > desc_list_end)
1370 return AVERROR_INVALIDDATA;
1372 av_log(fc, AV_LOG_TRACE, "tag: 0x%02x len=%d\n", desc_tag, desc_len);
1374 if (st->codecpar->codec_id == AV_CODEC_ID_NONE &&
1375 stream_type == STREAM_TYPE_PRIVATE_DATA)
1376 mpegts_find_stream_type(st, desc_tag, DESC_types);
1379 case 0x1E: /* SL descriptor */
1380 desc_es_id = get16(pp, desc_end);
1383 if (ts && ts->pids[pid])
1384 ts->pids[pid]->es_id = desc_es_id;
1385 for (i = 0; i < mp4_descr_count; i++)
1386 if (mp4_descr[i].dec_config_descr_len &&
1387 mp4_descr[i].es_id == desc_es_id) {
1389 ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
1390 mp4_descr[i].dec_config_descr_len, 0,
1391 NULL, NULL, NULL, NULL);
1392 ff_mp4_read_dec_config_descr(fc, st, &pb);
1393 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1394 st->codecpar->extradata_size > 0)
1395 st->need_parsing = 0;
1396 if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4SYSTEMS)
1397 mpegts_open_section_filter(ts, pid, m4sl_cb, ts, 1);
1400 case 0x1F: /* FMC descriptor */
1401 if (get16(pp, desc_end) < 0)
1403 if (mp4_descr_count > 0 &&
1404 st->codecpar->codec_id == AV_CODEC_ID_AAC_LATM &&
1405 mp4_descr->dec_config_descr_len && mp4_descr->es_id == pid) {
1407 ffio_init_context(&pb, mp4_descr->dec_config_descr,
1408 mp4_descr->dec_config_descr_len, 0,
1409 NULL, NULL, NULL, NULL);
1410 ff_mp4_read_dec_config_descr(fc, st, &pb);
1411 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1412 st->codecpar->extradata_size > 0)
1413 st->need_parsing = 0;
1416 case 0x56: /* DVB teletext descriptor */
1417 language[0] = get8(pp, desc_end);
1418 language[1] = get8(pp, desc_end);
1419 language[2] = get8(pp, desc_end);
1421 av_dict_set(&st->metadata, "language", language, 0);
1423 case 0x59: /* subtitling descriptor */
1424 language[0] = get8(pp, desc_end);
1425 language[1] = get8(pp, desc_end);
1426 language[2] = get8(pp, desc_end);
1428 /* hearing impaired subtitles detection */
1429 switch (get8(pp, desc_end)) {
1430 case 0x20: /* DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality */
1431 case 0x21: /* DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor */
1432 case 0x22: /* DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor */
1433 case 0x23: /* DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor */
1434 case 0x24: /* DVB subtitles (for the hard of hearing) for display on a high definition monitor */
1435 case 0x25: /* DVB subtitles (for the hard of hearing) with plano-stereoscopic disparity for display on a high definition monitor */
1436 st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
1439 if (st->codecpar->extradata) {
1440 if (st->codecpar->extradata_size == 4 &&
1441 memcmp(st->codecpar->extradata, *pp, 4))
1442 avpriv_request_sample(fc, "DVB sub with multiple IDs");
1444 st->codecpar->extradata = av_malloc(4 + AV_INPUT_BUFFER_PADDING_SIZE);
1445 if (st->codecpar->extradata) {
1446 st->codecpar->extradata_size = 4;
1447 memcpy(st->codecpar->extradata, *pp, 4);
1451 av_dict_set(&st->metadata, "language", language, 0);
1453 case 0x0a: /* ISO 639 language descriptor */
1454 for (i = 0; i + 4 <= desc_len; i += 4) {
1455 language[i + 0] = get8(pp, desc_end);
1456 language[i + 1] = get8(pp, desc_end);
1457 language[i + 2] = get8(pp, desc_end);
1458 language[i + 3] = ',';
1459 switch (get8(pp, desc_end)) {
1461 st->disposition |= AV_DISPOSITION_CLEAN_EFFECTS;
1464 st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
1467 st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
1471 if (i && language[0]) {
1472 language[i - 1] = 0;
1473 av_dict_set(&st->metadata, "language", language, 0);
1476 case 0x05: /* registration descriptor */
1477 st->codecpar->codec_tag = bytestream_get_le32(pp);
1478 av_log(fc, AV_LOG_TRACE, "reg_desc=%.4s\n", (char *)&st->codecpar->codec_tag);
1479 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
1480 mpegts_find_stream_type(st, st->codecpar->codec_tag, REGD_types);
1482 case 0x7f: /* DVB extension descriptor */
1483 ext_desc_tag = get8(pp, desc_end);
1484 if (ext_desc_tag < 0)
1485 return AVERROR_INVALIDDATA;
1486 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS &&
1487 ext_desc_tag == 0x80) { /* User defined (provisional Opus) */
1488 if (!st->codecpar->extradata) {
1489 st->codecpar->extradata = av_mallocz(sizeof(opus_default_extradata) +
1490 AV_INPUT_BUFFER_PADDING_SIZE);
1491 if (!st->codecpar->extradata)
1492 return AVERROR(ENOMEM);
1494 st->codecpar->extradata_size = sizeof(opus_default_extradata);
1495 memcpy(st->codecpar->extradata, opus_default_extradata, sizeof(opus_default_extradata));
1497 channel_config_code = get8(pp, desc_end);
1498 if (channel_config_code < 0)
1499 return AVERROR_INVALIDDATA;
1500 if (channel_config_code <= 0x8) {
1501 st->codecpar->extradata[9] = channels = channel_config_code ? channel_config_code : 2;
1502 st->codecpar->extradata[18] = channel_config_code ? (channels > 2) : 255;
1503 st->codecpar->extradata[19] = opus_stream_cnt[channel_config_code];
1504 st->codecpar->extradata[20] = opus_coupled_stream_cnt[channel_config_code];
1505 memcpy(&st->codecpar->extradata[21], opus_channel_map[channels - 1], channels);
1507 avpriv_request_sample(fc, "Opus in MPEG-TS - channel_config_code > 0x8");
1509 st->need_parsing = AVSTREAM_PARSE_FULL;
1520 static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
1522 MpegTSContext *ts = filter->u.section_filter.opaque;
1523 MpegTSSectionFilter *tssf = &filter->u.section_filter;
1524 SectionHeader h1, *h = &h1;
1527 const uint8_t *p, *p_end, *desc_list_end;
1528 int program_info_length, pcr_pid, pid, stream_type;
1530 uint32_t prog_reg_desc = 0; /* registration descriptor */
1532 int mp4_descr_count = 0;
1533 Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } };
1536 av_log(ts->stream, AV_LOG_TRACE, "PMT: len %i\n", section_len);
1537 hex_dump_debug(ts->stream, section, section_len);
1539 p_end = section + section_len - 4;
1541 if (parse_section_header(h, &p, p_end) < 0)
1543 if (h->version == tssf->last_ver)
1545 tssf->last_ver = h->version;
1547 av_log(ts->stream, AV_LOG_TRACE, "sid=0x%x sec_num=%d/%d\n",
1548 h->id, h->sec_num, h->last_sec_num);
1550 if (h->tid != PMT_TID)
1553 clear_program(ts, h->id);
1554 pcr_pid = get16(&p, p_end);
1558 add_pid_to_pmt(ts, h->id, pcr_pid);
1560 av_log(ts->stream, AV_LOG_TRACE, "pcr_pid=0x%x\n", pcr_pid);
1562 program_info_length = get16(&p, p_end);
1563 if (program_info_length < 0)
1565 program_info_length &= 0xfff;
1566 while (program_info_length >= 2) {
1568 tag = get8(&p, p_end);
1569 len = get8(&p, p_end);
1571 av_log(ts->stream, AV_LOG_TRACE, "program tag: 0x%02x len=%d\n", tag, len);
1573 if (len > program_info_length - 2)
1574 // something else is broken, exit the program_descriptors_loop
1576 program_info_length -= len + 2;
1577 if (tag == 0x1d) { // IOD descriptor
1578 get8(&p, p_end); // scope
1579 get8(&p, p_end); // label
1581 mp4_read_iods(ts->stream, p, len, mp4_descr + mp4_descr_count,
1582 &mp4_descr_count, MAX_MP4_DESCR_COUNT);
1583 } else if (tag == 0x05 && len >= 4) { // registration descriptor
1584 prog_reg_desc = bytestream_get_le32(&p);
1589 p += program_info_length;
1593 // stop parsing after pmt, we found header
1594 if (!ts->stream->nb_streams)
1601 stream_type = get8(&p, p_end);
1602 if (stream_type < 0)
1604 pid = get16(&p, p_end);
1609 /* now create stream */
1610 if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) {
1611 pes = ts->pids[pid]->u.pes_filter.opaque;
1613 pes->st = avformat_new_stream(pes->stream, NULL);
1614 pes->st->id = pes->pid;
1617 } else if (stream_type != 0x13) {
1619 mpegts_close_filter(ts, ts->pids[pid]); // wrongly added sdt filter probably
1620 pes = add_pes_stream(ts, pid, pcr_pid);
1622 st = avformat_new_stream(pes->stream, NULL);
1626 int idx = ff_find_stream_index(ts->stream, pid);
1628 st = ts->stream->streams[idx];
1630 st = avformat_new_stream(ts->stream, NULL);
1632 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
1639 if (pes && !pes->stream_type)
1640 mpegts_set_stream_info(st, pes, stream_type, prog_reg_desc);
1642 add_pid_to_pmt(ts, h->id, pid);
1644 ff_program_add_stream_index(ts->stream, h->id, st->index);
1646 desc_list_len = get16(&p, p_end);
1647 if (desc_list_len < 0)
1649 desc_list_len &= 0xfff;
1650 desc_list_end = p + desc_list_len;
1651 if (desc_list_end > p_end)
1654 if (ff_parse_mpeg2_descriptor(ts->stream, st, stream_type, &p,
1655 desc_list_end, mp4_descr,
1656 mp4_descr_count, pid, ts) < 0)
1659 if (pes && prog_reg_desc == AV_RL32("HDMV") &&
1660 stream_type == 0x83 && pes->sub_st) {
1661 ff_program_add_stream_index(ts->stream, h->id,
1662 pes->sub_st->index);
1663 pes->sub_st->codecpar->codec_tag = st->codecpar->codec_tag;
1670 for (i = 0; i < mp4_descr_count; i++)
1671 av_free(mp4_descr[i].dec_config_descr);
1674 static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
1676 MpegTSContext *ts = filter->u.section_filter.opaque;
1677 MpegTSSectionFilter *tssf = &filter->u.section_filter;
1678 SectionHeader h1, *h = &h1;
1679 const uint8_t *p, *p_end;
1682 av_log(ts->stream, AV_LOG_TRACE, "PAT:\n");
1683 hex_dump_debug(ts->stream, section, section_len);
1685 p_end = section + section_len - 4;
1687 if (parse_section_header(h, &p, p_end) < 0)
1689 if (h->tid != PAT_TID)
1691 if (h->version == tssf->last_ver)
1693 tssf->last_ver = h->version;
1697 sid = get16(&p, p_end);
1700 pmt_pid = get16(&p, p_end);
1705 av_log(ts->stream, AV_LOG_TRACE, "sid=0x%x pid=0x%x\n", sid, pmt_pid);
1707 if (sid == 0x0000) {
1710 av_new_program(ts->stream, sid);
1711 if (ts->pids[pmt_pid])
1712 mpegts_close_filter(ts, ts->pids[pmt_pid]);
1713 mpegts_open_section_filter(ts, pmt_pid, pmt_cb, ts, 1);
1714 add_pat_entry(ts, sid);
1715 add_pid_to_pmt(ts, sid, 0); // add pat pid to program
1716 add_pid_to_pmt(ts, sid, pmt_pid);
1721 static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
1723 MpegTSContext *ts = filter->u.section_filter.opaque;
1724 MpegTSSectionFilter *tssf = &filter->u.section_filter;
1725 SectionHeader h1, *h = &h1;
1726 const uint8_t *p, *p_end, *desc_list_end, *desc_end;
1727 int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
1728 char *name, *provider_name;
1730 av_log(ts->stream, AV_LOG_TRACE, "SDT:\n");
1731 hex_dump_debug(ts->stream, section, section_len);
1733 p_end = section + section_len - 4;
1735 if (parse_section_header(h, &p, p_end) < 0)
1737 if (h->tid != SDT_TID)
1739 if (h->version == tssf->last_ver)
1741 tssf->last_ver = h->version;
1743 onid = get16(&p, p_end);
1746 val = get8(&p, p_end);
1750 sid = get16(&p, p_end);
1753 val = get8(&p, p_end);
1756 desc_list_len = get16(&p, p_end);
1757 if (desc_list_len < 0)
1759 desc_list_len &= 0xfff;
1760 desc_list_end = p + desc_list_len;
1761 if (desc_list_end > p_end)
1764 desc_tag = get8(&p, desc_list_end);
1767 desc_len = get8(&p, desc_list_end);
1768 desc_end = p + desc_len;
1769 if (desc_end > desc_list_end)
1772 av_log(ts->stream, AV_LOG_TRACE, "tag: 0x%02x len=%d\n",
1773 desc_tag, desc_len);
1777 service_type = get8(&p, p_end);
1778 if (service_type < 0)
1780 provider_name = getstr8(&p, p_end);
1783 name = getstr8(&p, p_end);
1785 AVProgram *program = av_new_program(ts->stream, sid);
1787 av_dict_set(&program->metadata, "service_name", name, 0);
1788 av_dict_set(&program->metadata, "service_provider",
1793 av_free(provider_name);
1804 /* handle one TS packet */
1805 static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
1808 int len, pid, cc, expected_cc, cc_ok, afc, is_start, is_discontinuity,
1809 has_adaptation, has_payload;
1810 const uint8_t *p, *p_end;
1813 pid = AV_RB16(packet + 1) & 0x1fff;
1814 if (pid && discard_pid(ts, pid))
1816 is_start = packet[1] & 0x40;
1817 tss = ts->pids[pid];
1818 if (ts->auto_guess && !tss && is_start) {
1819 add_pes_stream(ts, pid, -1);
1820 tss = ts->pids[pid];
1825 afc = (packet[3] >> 4) & 3;
1826 if (afc == 0) /* reserved value */
1828 has_adaptation = afc & 2;
1829 has_payload = afc & 1;
1830 is_discontinuity = has_adaptation &&
1831 packet[4] != 0 && /* with length > 0 */
1832 (packet[5] & 0x80); /* and discontinuity indicated */
1834 /* continuity check (currently not used) */
1835 cc = (packet[3] & 0xf);
1836 expected_cc = has_payload ? (tss->last_cc + 1) & 0x0f : tss->last_cc;
1837 cc_ok = pid == 0x1FFF || // null packet PID
1844 av_log(ts->stream, AV_LOG_WARNING,
1845 "Continuity check failed for pid %d expected %d got %d\n",
1846 pid, expected_cc, cc);
1847 if (tss->type == MPEGTS_PES) {
1848 PESContext *pc = tss->u.pes_filter.opaque;
1849 pc->flags |= AV_PKT_FLAG_CORRUPT;
1856 if (has_adaptation) {
1857 /* skip adaptation field */
1860 /* if past the end of packet, ignore */
1861 p_end = packet + TS_PACKET_SIZE;
1865 pos = avio_tell(ts->stream->pb);
1866 MOD_UNLIKELY(ts->pos47, pos, ts->raw_packet_size, ts->pos);
1868 if (tss->type == MPEGTS_SECTION) {
1870 /* pointer field present */
1872 if (p + len > p_end)
1875 /* write remaining section bytes */
1876 write_section_data(ts, tss,
1878 /* check whether filter has been closed */
1884 write_section_data(ts, tss,
1889 write_section_data(ts, tss,
1895 // Note: The position here points actually behind the current packet.
1896 if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start,
1897 pos - ts->raw_packet_size)) < 0)
1904 /* XXX: try to find a better synchro over several packets (use
1905 * get_packet_size() ?) */
1906 static int mpegts_resync(AVFormatContext *s)
1908 MpegTSContext *ts = s->priv_data;
1909 AVIOContext *pb = s->pb;
1912 for (i = 0; i < ts->resync_size; i++) {
1914 if (pb->eof_reached)
1917 avio_seek(pb, -1, SEEK_CUR);
1921 av_log(s, AV_LOG_ERROR,
1922 "max resync size reached, could not find sync byte\n");
1924 return AVERROR_INVALIDDATA;
1927 /* return AVERROR_something if error or EOF. Return 0 if OK. */
1928 static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size,
1929 const uint8_t **data)
1931 AVIOContext *pb = s->pb;
1935 len = ffio_read_indirect(pb, buf, TS_PACKET_SIZE, data);
1936 if (len != TS_PACKET_SIZE)
1937 return len < 0 ? len : AVERROR_EOF;
1938 /* check packet sync byte */
1939 if ((*data)[0] != 0x47) {
1940 /* find a new packet start */
1941 avio_seek(pb, -TS_PACKET_SIZE, SEEK_CUR);
1942 if (mpegts_resync(s) < 0)
1943 return AVERROR(EAGAIN);
1953 static void finished_reading_packet(AVFormatContext *s, int raw_packet_size)
1955 AVIOContext *pb = s->pb;
1956 int skip = raw_packet_size - TS_PACKET_SIZE;
1958 avio_skip(pb, skip);
1961 static int handle_packets(MpegTSContext *ts, int nb_packets)
1963 AVFormatContext *s = ts->stream;
1964 uint8_t packet[TS_PACKET_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
1965 const uint8_t *data;
1966 int packet_num, ret = 0;
1968 if (avio_tell(s->pb) != ts->last_pos) {
1970 av_log(ts->stream, AV_LOG_TRACE, "Skipping after seek\n");
1971 /* seek detected, flush pes buffer */
1972 for (i = 0; i < NB_PID_MAX; i++) {
1974 if (ts->pids[i]->type == MPEGTS_PES) {
1975 PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
1976 av_buffer_unref(&pes->buffer);
1977 pes->data_index = 0;
1978 pes->state = MPEGTS_SKIP; /* skip until pes header */
1980 ts->pids[i]->last_cc = -1;
1987 memset(packet + TS_PACKET_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1989 if (ts->stop_parse > 0)
1992 if (nb_packets != 0 && packet_num >= nb_packets)
1994 ret = read_packet(s, packet, ts->raw_packet_size, &data);
1997 ret = handle_packet(ts, data);
1998 finished_reading_packet(s, ts->raw_packet_size);
2002 ts->last_pos = avio_tell(s->pb);
2006 static int mpegts_probe(AVProbeData *p)
2008 const int size = p->buf_size;
2009 int score, fec_score, dvhs_score;
2010 int check_count = size / TS_FEC_PACKET_SIZE;
2011 #define CHECK_COUNT 10
2013 if (check_count < CHECK_COUNT)
2014 return AVERROR_INVALIDDATA;
2016 score = analyze(p->buf, TS_PACKET_SIZE * check_count,
2017 TS_PACKET_SIZE, NULL, 1) * CHECK_COUNT / check_count;
2018 dvhs_score = analyze(p->buf, TS_DVHS_PACKET_SIZE * check_count,
2019 TS_DVHS_PACKET_SIZE, NULL, 1) * CHECK_COUNT / check_count;
2020 fec_score = analyze(p->buf, TS_FEC_PACKET_SIZE * check_count,
2021 TS_FEC_PACKET_SIZE, NULL, 1) * CHECK_COUNT / check_count;
2022 av_log(NULL, AV_LOG_TRACE, "score: %d, dvhs_score: %d, fec_score: %d \n",
2023 score, dvhs_score, fec_score);
2025 /* we need a clear definition for the returned score otherwise
2026 * things will become messy sooner or later */
2027 if (score > fec_score && score > dvhs_score && score > 6)
2028 return AVPROBE_SCORE_MAX + score - CHECK_COUNT;
2029 else if (dvhs_score > score && dvhs_score > fec_score && dvhs_score > 6)
2030 return AVPROBE_SCORE_MAX + dvhs_score - CHECK_COUNT;
2031 else if (fec_score > 6)
2032 return AVPROBE_SCORE_MAX + fec_score - CHECK_COUNT;
2034 return AVERROR_INVALIDDATA;
2037 /* return the 90kHz PCR and the extension for the 27MHz PCR. return
2038 * (-1) if not available */
2039 static int parse_pcr(int64_t *ppcr_high, int *ppcr_low, const uint8_t *packet)
2041 int afc, len, flags;
2045 afc = (packet[3] >> 4) & 3;
2047 return AVERROR_INVALIDDATA;
2052 return AVERROR_INVALIDDATA;
2055 if (!(flags & 0x10))
2056 return AVERROR_INVALIDDATA;
2058 return AVERROR_INVALIDDATA;
2060 *ppcr_high = ((int64_t) v << 1) | (p[4] >> 7);
2061 *ppcr_low = ((p[4] & 1) << 8) | p[5];
2065 static int mpegts_read_header(AVFormatContext *s)
2067 MpegTSContext *ts = s->priv_data;
2068 AVIOContext *pb = s->pb;
2069 uint8_t buf[5 * 1024];
2073 /* read the first 1024 bytes to get packet size */
2074 pos = avio_tell(pb);
2075 len = avio_read(pb, buf, sizeof(buf));
2078 if (len != sizeof(buf))
2080 ts->raw_packet_size = get_packet_size(buf, sizeof(buf));
2081 if (ts->raw_packet_size <= 0)
2082 return AVERROR_INVALIDDATA;
2086 if (s->iformat == &ff_mpegts_demuxer) {
2089 /* first do a scan to get all the services */
2090 if (avio_seek(pb, pos, SEEK_SET) < 0 &&
2091 (pb->seekable & AVIO_SEEKABLE_NORMAL))
2092 av_log(s, AV_LOG_ERROR, "Unable to seek back to the start\n");
2094 mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
2096 mpegts_open_section_filter(ts, PAT_PID, pat_cb, ts, 1);
2098 handle_packets(ts, s->probesize / ts->raw_packet_size);
2099 /* if could not find service, enable auto_guess */
2103 av_log(ts->stream, AV_LOG_TRACE, "tuning done\n");
2105 s->ctx_flags |= AVFMTCTX_NOHEADER;
2108 int pcr_pid, pid, nb_packets, nb_pcrs, ret, pcr_l;
2109 int64_t pcrs[2], pcr_h;
2110 int packet_count[2];
2111 uint8_t packet[TS_PACKET_SIZE];
2112 const uint8_t *data;
2114 /* only read packets */
2116 st = avformat_new_stream(s, NULL);
2118 return AVERROR(ENOMEM);
2119 avpriv_set_pts_info(st, 60, 1, 27000000);
2120 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2121 st->codecpar->codec_id = AV_CODEC_ID_MPEG2TS;
2123 /* we iterate until we find two PCRs to estimate the bitrate */
2128 ret = read_packet(s, packet, ts->raw_packet_size, &data);
2131 pid = AV_RB16(data + 1) & 0x1fff;
2132 if ((pcr_pid == -1 || pcr_pid == pid) &&
2133 parse_pcr(&pcr_h, &pcr_l, data) == 0) {
2134 finished_reading_packet(s, ts->raw_packet_size);
2136 packet_count[nb_pcrs] = nb_packets;
2137 pcrs[nb_pcrs] = pcr_h * 300 + pcr_l;
2142 finished_reading_packet(s, ts->raw_packet_size);
2147 /* NOTE1: the bitrate is computed without the FEC */
2148 /* NOTE2: it is only the bitrate of the start of the stream */
2149 ts->pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - packet_count[0]);
2150 ts->cur_pcr = pcrs[0] - ts->pcr_incr * packet_count[0];
2151 s->bit_rate = TS_PACKET_SIZE * 8 * 27e6 / ts->pcr_incr;
2152 st->codecpar->bit_rate = s->bit_rate;
2153 st->start_time = ts->cur_pcr;
2154 av_log(ts->stream, AV_LOG_TRACE, "start=%0.3f pcr=%0.3f incr=%d\n",
2155 st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr);
2158 avio_seek(pb, pos, SEEK_SET);
2162 #define MAX_PACKET_READAHEAD ((128 * 1024) / 188)
2164 static int mpegts_raw_read_packet(AVFormatContext *s, AVPacket *pkt)
2166 MpegTSContext *ts = s->priv_data;
2168 int64_t pcr_h, next_pcr_h, pos;
2169 int pcr_l, next_pcr_l;
2170 uint8_t pcr_buf[12];
2171 const uint8_t *data;
2173 if (av_new_packet(pkt, TS_PACKET_SIZE) < 0)
2174 return AVERROR(ENOMEM);
2175 ret = read_packet(s, pkt->data, ts->raw_packet_size, &data);
2176 pkt->pos = avio_tell(s->pb);
2178 av_packet_unref(pkt);
2181 if (data != pkt->data)
2182 memcpy(pkt->data, data, ts->raw_packet_size);
2183 finished_reading_packet(s, ts->raw_packet_size);
2184 if (ts->mpeg2ts_compute_pcr) {
2185 /* compute exact PCR for each packet */
2186 if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) {
2187 /* we read the next PCR (XXX: optimize it by using a bigger buffer */
2188 pos = avio_tell(s->pb);
2189 for (i = 0; i < MAX_PACKET_READAHEAD; i++) {
2190 avio_seek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
2191 avio_read(s->pb, pcr_buf, 12);
2192 if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
2193 /* XXX: not precise enough */
2195 ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
2200 avio_seek(s->pb, pos, SEEK_SET);
2201 /* no next PCR found: we use previous increment */
2202 ts->cur_pcr = pcr_h * 300 + pcr_l;
2204 pkt->pts = ts->cur_pcr;
2205 pkt->duration = ts->pcr_incr;
2206 ts->cur_pcr += ts->pcr_incr;
2208 pkt->stream_index = 0;
2212 static int mpegts_read_packet(AVFormatContext *s, AVPacket *pkt)
2214 MpegTSContext *ts = s->priv_data;
2219 ret = handle_packets(ts, 0);
2221 /* flush pes data left */
2222 for (i = 0; i < NB_PID_MAX; i++)
2223 if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
2224 PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
2225 if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
2226 new_pes_packet(pes, pkt);
2227 pes->state = MPEGTS_SKIP;
2234 if (!ret && pkt->size < 0)
2235 ret = AVERROR(EINTR);
2239 static void mpegts_free(MpegTSContext *ts)
2245 for (i = 0; i < NB_PID_MAX; i++)
2247 mpegts_close_filter(ts, ts->pids[i]);
2250 static int mpegts_read_close(AVFormatContext *s)
2252 MpegTSContext *ts = s->priv_data;
2257 static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index,
2258 int64_t *ppos, int64_t pos_limit)
2260 MpegTSContext *ts = s->priv_data;
2261 int64_t pos, timestamp;
2262 uint8_t buf[TS_PACKET_SIZE];
2263 int pcr_l, pcr_pid =
2264 ((PESContext *)s->streams[stream_index]->priv_data)->pcr_pid;
2265 const int find_next = 1;
2267 ((*ppos + ts->raw_packet_size - 1 - ts->pos47) / ts->raw_packet_size) *
2268 ts->raw_packet_size + ts->pos47;
2271 avio_seek(s->pb, pos, SEEK_SET);
2272 if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
2273 return AV_NOPTS_VALUE;
2274 if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
2275 parse_pcr(×tamp, &pcr_l, buf) == 0) {
2278 pos += ts->raw_packet_size;
2282 pos -= ts->raw_packet_size;
2284 return AV_NOPTS_VALUE;
2285 avio_seek(s->pb, pos, SEEK_SET);
2286 if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
2287 return AV_NOPTS_VALUE;
2288 if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
2289 parse_pcr(×tamp, &pcr_l, buf) == 0) {
2299 static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
2301 MpegTSContext *ts = s->priv_data;
2302 uint8_t buf[TS_PACKET_SIZE];
2306 ret = ff_seek_frame_binary(s, stream_index, target_ts, flags);
2310 pos = avio_tell(s->pb);
2313 avio_seek(s->pb, pos, SEEK_SET);
2314 ret = avio_read(s->pb, buf, TS_PACKET_SIZE);
2317 if (ret != TS_PACKET_SIZE)
2319 // pid = AV_RB16(buf + 1) & 0x1fff;
2322 pos += ts->raw_packet_size;
2324 avio_seek(s->pb, pos, SEEK_SET);
2329 /**************************************************************/
2330 /* parsing functions - called from other demuxers such as RTP */
2332 MpegTSContext *ff_mpegts_parse_open(AVFormatContext *s)
2336 ts = av_mallocz(sizeof(MpegTSContext));
2339 /* no stream case, currently used by RTP */
2340 ts->raw_packet_size = TS_PACKET_SIZE;
2346 /* return the consumed length if a packet was output, or -1 if no
2347 * packet is output */
2348 int ff_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt,
2349 const uint8_t *buf, int len)
2357 if (ts->stop_parse > 0)
2359 if (len < TS_PACKET_SIZE)
2360 return AVERROR_INVALIDDATA;
2361 if (buf[0] != 0x47) {
2365 handle_packet(ts, buf);
2366 buf += TS_PACKET_SIZE;
2367 len -= TS_PACKET_SIZE;
2373 void ff_mpegts_parse_close(MpegTSContext *ts)
2379 AVInputFormat ff_mpegts_demuxer = {
2381 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2382 .priv_data_size = sizeof(MpegTSContext),
2383 .read_probe = mpegts_probe,
2384 .read_header = mpegts_read_header,
2385 .read_packet = mpegts_read_packet,
2386 .read_close = mpegts_read_close,
2387 .read_seek = read_seek,
2388 .read_timestamp = mpegts_get_pcr,
2389 .flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
2390 .priv_class = &mpegts_class,
2393 AVInputFormat ff_mpegtsraw_demuxer = {
2394 .name = "mpegtsraw",
2395 .long_name = NULL_IF_CONFIG_SMALL("raw MPEG-TS (MPEG-2 Transport Stream)"),
2396 .priv_data_size = sizeof(MpegTSContext),
2397 .read_header = mpegts_read_header,
2398 .read_packet = mpegts_raw_read_packet,
2399 .read_close = mpegts_read_close,
2400 .read_seek = read_seek,
2401 .read_timestamp = mpegts_get_pcr,
2402 .flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
2403 .priv_class = &mpegtsraw_class,