2 * MPEG2 transport stream (aka DVB) demuxer
3 * Copyright (c) 2002-2003 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
24 //#define USE_SYNCPOINT_SEARCH
26 #include "libavutil/crc.h"
27 #include "libavutil/intreadwrite.h"
28 #include "libavcodec/bytestream.h"
34 /* 1.0 second at 24Mbit/s */
35 #define MAX_SCAN_PACKETS 32000
37 /* maximum size in which we look for synchronisation if
38 synchronisation is lost */
39 #define MAX_RESYNC_SIZE 65536
41 #define MAX_PES_PAYLOAD 200*1024
43 enum MpegTSFilterType {
48 typedef struct MpegTSFilter MpegTSFilter;
50 typedef int PESCallback(MpegTSFilter *f, const uint8_t *buf, int len, int is_start, int64_t pos);
52 typedef struct MpegTSPESFilter {
57 typedef void SectionCallback(MpegTSFilter *f, const uint8_t *buf, int len);
59 typedef void SetServiceCallback(void *opaque, int ret);
61 typedef struct MpegTSSectionFilter {
65 unsigned int check_crc:1;
66 unsigned int end_of_section_reached:1;
67 SectionCallback *section_cb;
69 } MpegTSSectionFilter;
73 int last_cc; /* last cc code (-1 if first packet) */
74 enum MpegTSFilterType type;
76 MpegTSPESFilter pes_filter;
77 MpegTSSectionFilter section_filter;
81 #define MAX_PIDS_PER_PROGRAM 64
83 unsigned int id; //program id/service id
85 unsigned int pids[MAX_PIDS_PER_PROGRAM];
88 struct MpegTSContext {
90 AVFormatContext *stream;
91 /** raw packet size, including FEC if present */
96 /** if true, all pids are analyzed to find streams */
99 /** compute exact PCR for each transport stream packet */
100 int mpeg2ts_compute_pcr;
102 int64_t cur_pcr; /**< used to estimate the exact PCR */
103 int pcr_incr; /**< used to estimate the exact PCR */
105 /* data needed to handle file based ts */
106 /** stop parsing loop */
108 /** packet containing Audio/Video data */
110 /** to detect seek */
113 /******************************************/
114 /* private mpegts data */
116 /** structure to keep track of Program->pids mapping */
121 /** filters for various streams specified by PMT + for the PAT and PMT */
122 MpegTSFilter *pids[NB_PID_MAX];
125 /* TS stream handling */
130 MPEGTS_PESHEADER_FILL,
135 /* enough for PES header + length */
136 #define PES_START_SIZE 6
137 #define PES_HEADER_SIZE 9
138 #define MAX_PES_HEADER_SIZE (9 + 255)
140 typedef struct PESContext {
142 int pcr_pid; /**< if -1 then all packets containing PCR are considered */
145 AVFormatContext *stream;
147 AVStream *sub_st; /**< stream for the embedded AC3 stream in HDMV TrueHD */
148 enum MpegTSState state;
149 /* used to get the format */
153 int extended_stream_id;
155 int64_t ts_packet_pos; /**< position of first TS packet of this PES packet */
156 uint8_t header[MAX_PES_HEADER_SIZE];
160 extern AVInputFormat mpegts_demuxer;
162 static void clear_program(MpegTSContext *ts, unsigned int programid)
166 for(i=0; i<ts->nb_prg; i++)
167 if(ts->prg[i].id == programid)
168 ts->prg[i].nb_pids = 0;
171 static void clear_programs(MpegTSContext *ts)
177 static void add_pat_entry(MpegTSContext *ts, unsigned int programid)
180 void *tmp = av_realloc(ts->prg, (ts->nb_prg+1)*sizeof(struct Program));
184 p = &ts->prg[ts->nb_prg];
190 static void add_pid_to_pmt(MpegTSContext *ts, unsigned int programid, unsigned int pid)
193 struct Program *p = NULL;
194 for(i=0; i<ts->nb_prg; i++) {
195 if(ts->prg[i].id == programid) {
203 if(p->nb_pids >= MAX_PIDS_PER_PROGRAM)
205 p->pids[p->nb_pids++] = pid;
209 * \brief discard_pid() decides if the pid is to be discarded according
210 * to caller's programs selection
211 * \param ts : - TS context
213 * \return 1 if the pid is only comprised in programs that have .discard=AVDISCARD_ALL
216 static int discard_pid(MpegTSContext *ts, unsigned int pid)
219 int used = 0, discarded = 0;
221 for(i=0; i<ts->nb_prg; i++) {
223 for(j=0; j<p->nb_pids; j++) {
224 if(p->pids[j] != pid)
226 //is program with id p->id set to be discarded?
227 for(k=0; k<ts->stream->nb_programs; k++) {
228 if(ts->stream->programs[k]->id == p->id) {
229 if(ts->stream->programs[k]->discard == AVDISCARD_ALL)
238 return !used && discarded;
242 * Assembles PES packets out of TS packets, and then calls the "section_cb"
243 * function when they are complete.
245 static void write_section_data(AVFormatContext *s, MpegTSFilter *tss1,
246 const uint8_t *buf, int buf_size, int is_start)
248 MpegTSSectionFilter *tss = &tss1->u.section_filter;
252 memcpy(tss->section_buf, buf, buf_size);
253 tss->section_index = buf_size;
254 tss->section_h_size = -1;
255 tss->end_of_section_reached = 0;
257 if (tss->end_of_section_reached)
259 len = 4096 - tss->section_index;
262 memcpy(tss->section_buf + tss->section_index, buf, len);
263 tss->section_index += len;
266 /* compute section length if possible */
267 if (tss->section_h_size == -1 && tss->section_index >= 3) {
268 len = (AV_RB16(tss->section_buf + 1) & 0xfff) + 3;
271 tss->section_h_size = len;
274 if (tss->section_h_size != -1 && tss->section_index >= tss->section_h_size) {
275 tss->end_of_section_reached = 1;
276 if (!tss->check_crc ||
277 av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1,
278 tss->section_buf, tss->section_h_size) == 0)
279 tss->section_cb(tss1, tss->section_buf, tss->section_h_size);
283 static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts, unsigned int pid,
284 SectionCallback *section_cb, void *opaque,
288 MpegTSFilter *filter;
289 MpegTSSectionFilter *sec;
291 dprintf(ts->stream, "Filter: pid=0x%x\n", pid);
293 if (pid >= NB_PID_MAX || ts->pids[pid])
295 filter = av_mallocz(sizeof(MpegTSFilter));
298 ts->pids[pid] = filter;
299 filter->type = MPEGTS_SECTION;
301 filter->last_cc = -1;
302 sec = &filter->u.section_filter;
303 sec->section_cb = section_cb;
304 sec->opaque = opaque;
305 sec->section_buf = av_malloc(MAX_SECTION_SIZE);
306 sec->check_crc = check_crc;
307 if (!sec->section_buf) {
314 static MpegTSFilter *mpegts_open_pes_filter(MpegTSContext *ts, unsigned int pid,
318 MpegTSFilter *filter;
319 MpegTSPESFilter *pes;
321 if (pid >= NB_PID_MAX || ts->pids[pid])
323 filter = av_mallocz(sizeof(MpegTSFilter));
326 ts->pids[pid] = filter;
327 filter->type = MPEGTS_PES;
329 filter->last_cc = -1;
330 pes = &filter->u.pes_filter;
331 pes->pes_cb = pes_cb;
332 pes->opaque = opaque;
336 static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
341 if (filter->type == MPEGTS_SECTION)
342 av_freep(&filter->u.section_filter.section_buf);
343 else if (filter->type == MPEGTS_PES) {
344 PESContext *pes = filter->u.pes_filter.opaque;
345 av_freep(&pes->buffer);
346 /* referenced private data will be freed later in
347 * av_close_input_stream */
348 if (!((PESContext *)filter->u.pes_filter.opaque)->st) {
349 av_freep(&filter->u.pes_filter.opaque);
354 ts->pids[pid] = NULL;
357 static int analyze(const uint8_t *buf, int size, int packet_size, int *index){
358 int stat[TS_MAX_PACKET_SIZE];
363 memset(stat, 0, packet_size*sizeof(int));
365 for(x=i=0; i<size-3; i++){
366 if(buf[i] == 0x47 && !(buf[i+1] & 0x80) && (buf[i+3] & 0x30)){
368 if(stat[x] > best_score){
375 if(x == packet_size) x= 0;
381 /* autodetect fec presence. Must have at least 1024 bytes */
382 static int get_packet_size(const uint8_t *buf, int size)
384 int score, fec_score, dvhs_score;
386 if (size < (TS_FEC_PACKET_SIZE * 5 + 1))
389 score = analyze(buf, size, TS_PACKET_SIZE, NULL);
390 dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, NULL);
391 fec_score= analyze(buf, size, TS_FEC_PACKET_SIZE, NULL);
392 // av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
394 if (score > fec_score && score > dvhs_score) return TS_PACKET_SIZE;
395 else if(dvhs_score > score && dvhs_score > fec_score) return TS_DVHS_PACKET_SIZE;
396 else if(score < fec_score && dvhs_score < fec_score) return TS_FEC_PACKET_SIZE;
400 typedef struct SectionHeader {
405 uint8_t last_sec_num;
408 static inline int get8(const uint8_t **pp, const uint8_t *p_end)
421 static inline int get16(const uint8_t **pp, const uint8_t *p_end)
427 if ((p + 1) >= p_end)
435 /* read and allocate a DVB string preceeded by its length */
436 static char *getstr8(const uint8_t **pp, const uint8_t *p_end)
443 len = get8(&p, p_end);
446 if ((p + len) > p_end)
448 str = av_malloc(len + 1);
458 static int parse_section_header(SectionHeader *h,
459 const uint8_t **pp, const uint8_t *p_end)
463 val = get8(pp, p_end);
468 val = get16(pp, p_end);
472 val = get8(pp, p_end);
475 h->version = (val >> 1) & 0x1f;
476 val = get8(pp, p_end);
480 val = get8(pp, p_end);
483 h->last_sec_num = val;
488 uint32_t stream_type;
489 enum AVMediaType codec_type;
490 enum CodecID codec_id;
493 static const StreamType ISO_types[] = {
494 { 0x01, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
495 { 0x02, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
496 { 0x03, AVMEDIA_TYPE_AUDIO, CODEC_ID_MP3 },
497 { 0x04, AVMEDIA_TYPE_AUDIO, CODEC_ID_MP3 },
498 { 0x0f, AVMEDIA_TYPE_AUDIO, CODEC_ID_AAC },
499 { 0x10, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG4 },
500 //{ 0x11, AVMEDIA_TYPE_AUDIO, CODEC_ID_AAC }, /* LATM syntax */
501 { 0x1b, AVMEDIA_TYPE_VIDEO, CODEC_ID_H264 },
502 { 0xd1, AVMEDIA_TYPE_VIDEO, CODEC_ID_DIRAC },
503 { 0xea, AVMEDIA_TYPE_VIDEO, CODEC_ID_VC1 },
507 static const StreamType HDMV_types[] = {
508 { 0x80, AVMEDIA_TYPE_AUDIO, CODEC_ID_PCM_BLURAY },
509 { 0x81, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
510 { 0x82, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
511 { 0x83, AVMEDIA_TYPE_AUDIO, CODEC_ID_TRUEHD },
512 { 0x84, AVMEDIA_TYPE_AUDIO, CODEC_ID_EAC3 },
513 { 0x90, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_HDMV_PGS_SUBTITLE },
518 static const StreamType MISC_types[] = {
519 { 0x81, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
520 { 0x8a, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
524 static const StreamType REGD_types[] = {
525 { MKTAG('d','r','a','c'), AVMEDIA_TYPE_VIDEO, CODEC_ID_DIRAC },
526 { MKTAG('A','C','-','3'), AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
530 /* descriptor present */
531 static const StreamType DESC_types[] = {
532 { 0x6a, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 }, /* AC-3 descriptor */
533 { 0x7a, AVMEDIA_TYPE_AUDIO, CODEC_ID_EAC3 }, /* E-AC-3 descriptor */
534 { 0x7b, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
535 { 0x56, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_DVB_TELETEXT },
536 { 0x59, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_DVB_SUBTITLE }, /* subtitling descriptor */
540 static void mpegts_find_stream_type(AVStream *st,
541 uint32_t stream_type, const StreamType *types)
543 for (; types->stream_type; types++) {
544 if (stream_type == types->stream_type) {
545 st->codec->codec_type = types->codec_type;
546 st->codec->codec_id = types->codec_id;
552 static int mpegts_set_stream_info(AVStream *st, PESContext *pes,
553 uint32_t stream_type, uint32_t prog_reg_desc)
555 av_set_pts_info(st, 33, 1, 90000);
557 st->codec->codec_type = AVMEDIA_TYPE_DATA;
558 st->codec->codec_id = CODEC_ID_NONE;
559 st->need_parsing = AVSTREAM_PARSE_FULL;
561 pes->stream_type = stream_type;
563 av_log(pes->stream, AV_LOG_DEBUG,
564 "stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n",
565 st->index, pes->stream_type, pes->pid, (char*)&prog_reg_desc);
567 st->codec->codec_tag = pes->stream_type;
569 mpegts_find_stream_type(st, pes->stream_type, ISO_types);
570 if (prog_reg_desc == AV_RL32("HDMV") &&
571 st->codec->codec_id == CODEC_ID_NONE) {
572 mpegts_find_stream_type(st, pes->stream_type, HDMV_types);
573 if (pes->stream_type == 0x83) {
574 // HDMV TrueHD streams also contain an AC3 coded version of the
575 // audio track - add a second stream for this
577 // priv_data cannot be shared between streams
578 PESContext *sub_pes = av_malloc(sizeof(*sub_pes));
580 return AVERROR(ENOMEM);
581 memcpy(sub_pes, pes, sizeof(*sub_pes));
583 sub_st = av_new_stream(pes->stream, pes->pid);
586 return AVERROR(ENOMEM);
589 av_set_pts_info(sub_st, 33, 1, 90000);
590 sub_st->priv_data = sub_pes;
591 sub_st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
592 sub_st->codec->codec_id = CODEC_ID_AC3;
593 sub_st->need_parsing = AVSTREAM_PARSE_FULL;
594 sub_pes->sub_st = pes->sub_st = sub_st;
597 if (pes->stream_type == 0x11)
598 av_log(pes->stream, AV_LOG_WARNING,
599 "AAC LATM not currently supported, patch welcome\n");
600 if (st->codec->codec_id == CODEC_ID_NONE)
601 mpegts_find_stream_type(st, pes->stream_type, MISC_types);
606 static int64_t get_pts(const uint8_t *p)
608 int64_t pts = (int64_t)((p[0] >> 1) & 0x07) << 30;
609 pts |= (AV_RB16(p + 1) >> 1) << 15;
610 pts |= AV_RB16(p + 3) >> 1;
614 static void new_pes_packet(PESContext *pes, AVPacket *pkt)
618 pkt->destruct = av_destruct_packet;
619 pkt->data = pes->buffer;
620 pkt->size = pes->data_index;
621 memset(pkt->data+pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
623 // Separate out the AC3 substream from an HDMV combined TrueHD/AC3 PID
624 if (pes->sub_st && pes->stream_type == 0x83 && pes->extended_stream_id == 0x76)
625 pkt->stream_index = pes->sub_st->index;
627 pkt->stream_index = pes->st->index;
630 /* store position of first TS packet of this PES packet */
631 pkt->pos = pes->ts_packet_pos;
633 /* reset pts values */
634 pes->pts = AV_NOPTS_VALUE;
635 pes->dts = AV_NOPTS_VALUE;
640 /* return non zero if a packet could be constructed */
641 static int mpegts_push_data(MpegTSFilter *filter,
642 const uint8_t *buf, int buf_size, int is_start,
645 PESContext *pes = filter->u.pes_filter.opaque;
646 MpegTSContext *ts = pes->ts;
654 if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
655 new_pes_packet(pes, ts->pkt);
658 pes->state = MPEGTS_HEADER;
660 pes->ts_packet_pos = pos;
663 while (buf_size > 0) {
666 len = PES_START_SIZE - pes->data_index;
669 memcpy(pes->header + pes->data_index, p, len);
670 pes->data_index += len;
673 if (pes->data_index == PES_START_SIZE) {
674 /* we got all the PES or section header. We can now
677 av_hex_dump_log(pes->stream, AV_LOG_DEBUG, pes->header, pes->data_index);
679 if (pes->header[0] == 0x00 && pes->header[1] == 0x00 &&
680 pes->header[2] == 0x01) {
681 /* it must be an mpeg2 PES stream */
682 code = pes->header[3] | 0x100;
683 dprintf(pes->stream, "pid=%x pes_code=%#x\n", pes->pid, code);
685 if ((!pes->st && pes->stream->nb_streams == MAX_STREAMS) ||
686 (pes->st && pes->st->discard == AVDISCARD_ALL) ||
687 code == 0x1be) /* padding_stream */
690 /* stream not present in PMT */
692 pes->st = av_new_stream(ts->stream, pes->pid);
694 return AVERROR(ENOMEM);
695 mpegts_set_stream_info(pes->st, pes, 0, 0);
698 pes->total_size = AV_RB16(pes->header + 4);
699 /* NOTE: a zero total size means the PES size is
701 if (!pes->total_size)
702 pes->total_size = MAX_PES_PAYLOAD;
704 /* allocate pes buffer */
705 pes->buffer = av_malloc(pes->total_size+FF_INPUT_BUFFER_PADDING_SIZE);
707 return AVERROR(ENOMEM);
709 if (code != 0x1bc && code != 0x1bf && /* program_stream_map, private_stream_2 */
710 code != 0x1f0 && code != 0x1f1 && /* ECM, EMM */
711 code != 0x1ff && code != 0x1f2 && /* program_stream_directory, DSMCC_stream */
712 code != 0x1f8) { /* ITU-T Rec. H.222.1 type E stream */
713 pes->state = MPEGTS_PESHEADER;
714 if (pes->st->codec->codec_id == CODEC_ID_NONE) {
715 dprintf(pes->stream, "pid=%x stream_type=%x probing\n",
716 pes->pid, pes->stream_type);
717 pes->st->codec->codec_id = CODEC_ID_PROBE;
720 pes->state = MPEGTS_PAYLOAD;
724 /* otherwise, it should be a table */
727 pes->state = MPEGTS_SKIP;
732 /**********************************************/
733 /* PES packing parsing */
734 case MPEGTS_PESHEADER:
735 len = PES_HEADER_SIZE - pes->data_index;
740 memcpy(pes->header + pes->data_index, p, len);
741 pes->data_index += len;
744 if (pes->data_index == PES_HEADER_SIZE) {
745 pes->pes_header_size = pes->header[8] + 9;
746 pes->state = MPEGTS_PESHEADER_FILL;
749 case MPEGTS_PESHEADER_FILL:
750 len = pes->pes_header_size - pes->data_index;
755 memcpy(pes->header + pes->data_index, p, len);
756 pes->data_index += len;
759 if (pes->data_index == pes->pes_header_size) {
761 unsigned int flags, pes_ext, skip;
763 flags = pes->header[7];
765 pes->pts = AV_NOPTS_VALUE;
766 pes->dts = AV_NOPTS_VALUE;
767 if ((flags & 0xc0) == 0x80) {
768 pes->dts = pes->pts = get_pts(r);
770 } else if ((flags & 0xc0) == 0xc0) {
771 pes->pts = get_pts(r);
773 pes->dts = get_pts(r);
776 pes->extended_stream_id = -1;
777 if (flags & 0x01) { /* PES extension */
779 /* Skip PES private data, program packet sequence counter and P-STD buffer */
780 skip = (pes_ext >> 4) & 0xb;
783 if ((pes_ext & 0x41) == 0x01 &&
784 (r + 2) <= (pes->header + pes->pes_header_size)) {
785 /* PES extension 2 */
786 if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
787 pes->extended_stream_id = r[1];
791 /* we got the full header. We parse it and get the payload */
792 pes->state = MPEGTS_PAYLOAD;
797 if (buf_size > 0 && pes->buffer) {
798 if (pes->data_index+buf_size > pes->total_size) {
799 new_pes_packet(pes, ts->pkt);
800 pes->total_size = MAX_PES_PAYLOAD;
801 pes->buffer = av_malloc(pes->total_size+FF_INPUT_BUFFER_PADDING_SIZE);
803 return AVERROR(ENOMEM);
806 memcpy(pes->buffer+pes->data_index, p, buf_size);
807 pes->data_index += buf_size;
810 /* emit complete packets with known packet size
811 * decreases demuxer delay for infrequent packets like subtitles from
812 * a couple of seconds to milliseconds for properly muxed files.
813 * total_size is the number of bytes following pes_packet_length
814 * in the pes header, i.e. not counting the first 6 bytes */
815 if (pes->total_size < MAX_PES_PAYLOAD &&
816 pes->pes_header_size + pes->data_index == pes->total_size + 6) {
818 new_pes_packet(pes, ts->pkt);
830 static PESContext *add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid)
835 /* if no pid found, then add a pid context */
836 pes = av_mallocz(sizeof(PESContext));
840 pes->stream = ts->stream;
842 pes->pcr_pid = pcr_pid;
843 pes->state = MPEGTS_SKIP;
844 pes->pts = AV_NOPTS_VALUE;
845 pes->dts = AV_NOPTS_VALUE;
846 tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes);
854 static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
856 MpegTSContext *ts = filter->u.section_filter.opaque;
857 SectionHeader h1, *h = &h1;
860 const uint8_t *p, *p_end, *desc_list_end, *desc_end;
861 int program_info_length, pcr_pid, pid, stream_type;
862 int desc_list_len, desc_len, desc_tag;
863 int comp_page, anc_page;
865 uint32_t prog_reg_desc = 0; /* registration descriptor */
868 dprintf(ts->stream, "PMT: len %i\n", section_len);
869 av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
872 p_end = section + section_len - 4;
874 if (parse_section_header(h, &p, p_end) < 0)
877 dprintf(ts->stream, "sid=0x%x sec_num=%d/%d\n",
878 h->id, h->sec_num, h->last_sec_num);
880 if (h->tid != PMT_TID)
883 clear_program(ts, h->id);
884 pcr_pid = get16(&p, p_end) & 0x1fff;
887 add_pid_to_pmt(ts, h->id, pcr_pid);
889 dprintf(ts->stream, "pcr_pid=0x%x\n", pcr_pid);
891 program_info_length = get16(&p, p_end) & 0xfff;
892 if (program_info_length < 0)
894 while(program_info_length >= 2) {
896 tag = get8(&p, p_end);
897 len = get8(&p, p_end);
898 if(len > program_info_length - 2)
899 //something else is broken, exit the program_descriptors_loop
901 program_info_length -= len + 2;
902 if(tag == 0x05 && len >= 4) { // registration descriptor
903 prog_reg_desc = bytestream_get_le32(&p);
908 p += program_info_length;
912 // stop parsing after pmt, we found header
913 if (!ts->stream->nb_streams)
918 stream_type = get8(&p, p_end);
921 pid = get16(&p, p_end) & 0x1fff;
925 /* now create ffmpeg stream */
926 if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) {
927 pes = ts->pids[pid]->u.pes_filter.opaque;
930 if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably
931 pes = add_pes_stream(ts, pid, pcr_pid);
933 st = av_new_stream(pes->stream, pes->pid);
939 if (!pes->stream_type)
940 mpegts_set_stream_info(st, pes, stream_type, prog_reg_desc);
942 add_pid_to_pmt(ts, h->id, pid);
944 ff_program_add_stream_index(ts->stream, h->id, st->index);
946 desc_list_len = get16(&p, p_end) & 0xfff;
947 if (desc_list_len < 0)
949 desc_list_end = p + desc_list_len;
950 if (desc_list_end > p_end)
953 desc_tag = get8(&p, desc_list_end);
956 desc_len = get8(&p, desc_list_end);
959 desc_end = p + desc_len;
960 if (desc_end > desc_list_end)
963 dprintf(ts->stream, "tag: 0x%02x len=%d\n",
966 if (st->codec->codec_id == CODEC_ID_NONE &&
967 stream_type == STREAM_TYPE_PRIVATE_DATA)
968 mpegts_find_stream_type(st, desc_tag, DESC_types);
971 case 0x56: /* DVB teletext descriptor */
972 language[0] = get8(&p, desc_end);
973 language[1] = get8(&p, desc_end);
974 language[2] = get8(&p, desc_end);
976 av_metadata_set2(&st->metadata, "language", language, 0);
978 case 0x59: /* subtitling descriptor */
979 language[0] = get8(&p, desc_end);
980 language[1] = get8(&p, desc_end);
981 language[2] = get8(&p, desc_end);
984 comp_page = get16(&p, desc_end);
985 anc_page = get16(&p, desc_end);
986 st->codec->sub_id = (anc_page << 16) | comp_page;
987 av_metadata_set2(&st->metadata, "language", language, 0);
989 case 0x0a: /* ISO 639 language descriptor */
990 language[0] = get8(&p, desc_end);
991 language[1] = get8(&p, desc_end);
992 language[2] = get8(&p, desc_end);
994 av_metadata_set2(&st->metadata, "language", language, 0);
996 case 0x05: /* registration descriptor */
997 st->codec->codec_tag = bytestream_get_le32(&p);
998 dprintf(ts->stream, "reg_desc=%.4s\n", (char*)&st->codec->codec_tag);
999 if (st->codec->codec_id == CODEC_ID_NONE &&
1000 stream_type == STREAM_TYPE_PRIVATE_DATA)
1001 mpegts_find_stream_type(st, st->codec->codec_tag, REGD_types);
1008 if (prog_reg_desc == AV_RL32("HDMV") && stream_type == 0x83 && pes->sub_st) {
1009 ff_program_add_stream_index(ts->stream, h->id, pes->sub_st->index);
1010 pes->sub_st->codec->codec_tag = st->codec->codec_tag;
1015 /* all parameters are there */
1016 mpegts_close_filter(ts, filter);
1019 static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
1021 MpegTSContext *ts = filter->u.section_filter.opaque;
1022 SectionHeader h1, *h = &h1;
1023 const uint8_t *p, *p_end;
1027 dprintf(ts->stream, "PAT:\n");
1028 av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
1030 p_end = section + section_len - 4;
1032 if (parse_section_header(h, &p, p_end) < 0)
1034 if (h->tid != PAT_TID)
1039 sid = get16(&p, p_end);
1042 pmt_pid = get16(&p, p_end) & 0x1fff;
1046 dprintf(ts->stream, "sid=0x%x pid=0x%x\n", sid, pmt_pid);
1048 if (sid == 0x0000) {
1051 av_new_program(ts->stream, sid);
1052 mpegts_open_section_filter(ts, pmt_pid, pmt_cb, ts, 1);
1053 add_pat_entry(ts, sid);
1054 add_pid_to_pmt(ts, sid, 0); //add pat pid to program
1055 add_pid_to_pmt(ts, sid, pmt_pid);
1060 static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
1062 MpegTSContext *ts = filter->u.section_filter.opaque;
1063 SectionHeader h1, *h = &h1;
1064 const uint8_t *p, *p_end, *desc_list_end, *desc_end;
1065 int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
1066 char *name, *provider_name;
1069 dprintf(ts->stream, "SDT:\n");
1070 av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
1073 p_end = section + section_len - 4;
1075 if (parse_section_header(h, &p, p_end) < 0)
1077 if (h->tid != SDT_TID)
1079 onid = get16(&p, p_end);
1082 val = get8(&p, p_end);
1086 sid = get16(&p, p_end);
1089 val = get8(&p, p_end);
1092 desc_list_len = get16(&p, p_end) & 0xfff;
1093 if (desc_list_len < 0)
1095 desc_list_end = p + desc_list_len;
1096 if (desc_list_end > p_end)
1099 desc_tag = get8(&p, desc_list_end);
1102 desc_len = get8(&p, desc_list_end);
1103 desc_end = p + desc_len;
1104 if (desc_end > desc_list_end)
1107 dprintf(ts->stream, "tag: 0x%02x len=%d\n",
1108 desc_tag, desc_len);
1112 service_type = get8(&p, p_end);
1113 if (service_type < 0)
1115 provider_name = getstr8(&p, p_end);
1118 name = getstr8(&p, p_end);
1120 AVProgram *program = av_new_program(ts->stream, sid);
1122 av_metadata_set2(&program->metadata, "name", name, 0);
1123 av_metadata_set2(&program->metadata, "provider_name", provider_name, 0);
1127 av_free(provider_name);
1138 /* handle one TS packet */
1139 static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
1141 AVFormatContext *s = ts->stream;
1143 int len, pid, cc, cc_ok, afc, is_start;
1144 const uint8_t *p, *p_end;
1147 pid = AV_RB16(packet + 1) & 0x1fff;
1148 if(pid && discard_pid(ts, pid))
1150 is_start = packet[1] & 0x40;
1151 tss = ts->pids[pid];
1152 if (ts->auto_guess && tss == NULL && is_start) {
1153 add_pes_stream(ts, pid, -1);
1154 tss = ts->pids[pid];
1159 /* continuity check (currently not used) */
1160 cc = (packet[3] & 0xf);
1161 cc_ok = (tss->last_cc < 0) || ((((tss->last_cc + 1) & 0x0f) == cc));
1164 /* skip adaptation field */
1165 afc = (packet[3] >> 4) & 3;
1167 if (afc == 0) /* reserved value */
1169 if (afc == 2) /* adaptation field only */
1172 /* skip adapation field */
1175 /* if past the end of packet, ignore */
1176 p_end = packet + TS_PACKET_SIZE;
1180 pos = url_ftell(ts->stream->pb);
1181 ts->pos47= pos % ts->raw_packet_size;
1183 if (tss->type == MPEGTS_SECTION) {
1185 /* pointer field present */
1187 if (p + len > p_end)
1190 /* write remaining section bytes */
1191 write_section_data(s, tss,
1193 /* check whether filter has been closed */
1199 write_section_data(s, tss,
1204 write_section_data(s, tss,
1210 // Note: The position here points actually behind the current packet.
1211 if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start,
1212 pos - ts->raw_packet_size)) < 0)
1219 /* XXX: try to find a better synchro over several packets (use
1220 get_packet_size() ?) */
1221 static int mpegts_resync(AVFormatContext *s)
1223 ByteIOContext *pb = s->pb;
1226 for(i = 0;i < MAX_RESYNC_SIZE; i++) {
1231 url_fseek(pb, -1, SEEK_CUR);
1235 av_log(s, AV_LOG_ERROR, "max resync size reached, could not find sync byte\n");
1240 /* return -1 if error or EOF. Return 0 if OK. */
1241 static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size)
1243 ByteIOContext *pb = s->pb;
1247 len = get_buffer(pb, buf, TS_PACKET_SIZE);
1248 if (len != TS_PACKET_SIZE)
1249 return AVERROR(EIO);
1250 /* check paquet sync byte */
1251 if (buf[0] != 0x47) {
1252 /* find a new packet start */
1253 url_fseek(pb, -TS_PACKET_SIZE, SEEK_CUR);
1254 if (mpegts_resync(s) < 0)
1255 return AVERROR(EAGAIN);
1259 skip = raw_packet_size - TS_PACKET_SIZE;
1261 url_fskip(pb, skip);
1268 static int handle_packets(MpegTSContext *ts, int nb_packets)
1270 AVFormatContext *s = ts->stream;
1271 uint8_t packet[TS_PACKET_SIZE];
1272 int packet_num, ret;
1277 if (ts->stop_parse>0)
1280 if (nb_packets != 0 && packet_num >= nb_packets)
1282 ret = read_packet(s, packet, ts->raw_packet_size);
1285 ret = handle_packet(ts, packet);
1292 static int mpegts_probe(AVProbeData *p)
1295 const int size= p->buf_size;
1296 int score, fec_score, dvhs_score;
1297 int check_count= size / TS_FEC_PACKET_SIZE;
1298 #define CHECK_COUNT 10
1300 if (check_count < CHECK_COUNT)
1303 score = analyze(p->buf, TS_PACKET_SIZE *check_count, TS_PACKET_SIZE , NULL)*CHECK_COUNT/check_count;
1304 dvhs_score= analyze(p->buf, TS_DVHS_PACKET_SIZE*check_count, TS_DVHS_PACKET_SIZE, NULL)*CHECK_COUNT/check_count;
1305 fec_score = analyze(p->buf, TS_FEC_PACKET_SIZE *check_count, TS_FEC_PACKET_SIZE , NULL)*CHECK_COUNT/check_count;
1306 // av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
1308 // we need a clear definition for the returned score otherwise things will become messy sooner or later
1309 if (score > fec_score && score > dvhs_score && score > 6) return AVPROBE_SCORE_MAX + score - CHECK_COUNT;
1310 else if(dvhs_score > score && dvhs_score > fec_score && dvhs_score > 6) return AVPROBE_SCORE_MAX + dvhs_score - CHECK_COUNT;
1311 else if( fec_score > 6) return AVPROBE_SCORE_MAX + fec_score - CHECK_COUNT;
1314 /* only use the extension for safer guess */
1315 if (av_match_ext(p->filename, "ts"))
1316 return AVPROBE_SCORE_MAX;
1322 /* return the 90kHz PCR and the extension for the 27MHz PCR. return
1323 (-1) if not available */
1324 static int parse_pcr(int64_t *ppcr_high, int *ppcr_low,
1325 const uint8_t *packet)
1327 int afc, len, flags;
1331 afc = (packet[3] >> 4) & 3;
1341 if (!(flags & 0x10))
1346 *ppcr_high = ((int64_t)v << 1) | (p[4] >> 7);
1347 *ppcr_low = ((p[4] & 1) << 8) | p[5];
1351 static int mpegts_read_header(AVFormatContext *s,
1352 AVFormatParameters *ap)
1354 MpegTSContext *ts = s->priv_data;
1355 ByteIOContext *pb = s->pb;
1356 uint8_t buf[5*1024];
1361 ts->mpeg2ts_compute_pcr = ap->mpeg2ts_compute_pcr;
1362 if(ap->mpeg2ts_raw){
1363 av_log(s, AV_LOG_ERROR, "use mpegtsraw_demuxer!\n");
1368 /* read the first 1024 bytes to get packet size */
1369 pos = url_ftell(pb);
1370 len = get_buffer(pb, buf, sizeof(buf));
1371 if (len != sizeof(buf))
1373 ts->raw_packet_size = get_packet_size(buf, sizeof(buf));
1374 if (ts->raw_packet_size <= 0)
1379 if (s->iformat == &mpegts_demuxer) {
1382 /* first do a scaning to get all the services */
1383 url_fseek(pb, pos, SEEK_SET);
1385 mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
1387 mpegts_open_section_filter(ts, PAT_PID, pat_cb, ts, 1);
1389 handle_packets(ts, s->probesize / ts->raw_packet_size);
1390 /* if could not find service, enable auto_guess */
1394 dprintf(ts->stream, "tuning done\n");
1396 s->ctx_flags |= AVFMTCTX_NOHEADER;
1399 int pcr_pid, pid, nb_packets, nb_pcrs, ret, pcr_l;
1400 int64_t pcrs[2], pcr_h;
1401 int packet_count[2];
1402 uint8_t packet[TS_PACKET_SIZE];
1404 /* only read packets */
1406 st = av_new_stream(s, 0);
1409 av_set_pts_info(st, 60, 1, 27000000);
1410 st->codec->codec_type = AVMEDIA_TYPE_DATA;
1411 st->codec->codec_id = CODEC_ID_MPEG2TS;
1413 /* we iterate until we find two PCRs to estimate the bitrate */
1418 ret = read_packet(s, packet, ts->raw_packet_size);
1421 pid = AV_RB16(packet + 1) & 0x1fff;
1422 if ((pcr_pid == -1 || pcr_pid == pid) &&
1423 parse_pcr(&pcr_h, &pcr_l, packet) == 0) {
1425 packet_count[nb_pcrs] = nb_packets;
1426 pcrs[nb_pcrs] = pcr_h * 300 + pcr_l;
1434 /* NOTE1: the bitrate is computed without the FEC */
1435 /* NOTE2: it is only the bitrate of the start of the stream */
1436 ts->pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - packet_count[0]);
1437 ts->cur_pcr = pcrs[0] - ts->pcr_incr * packet_count[0];
1438 s->bit_rate = (TS_PACKET_SIZE * 8) * 27e6 / ts->pcr_incr;
1439 st->codec->bit_rate = s->bit_rate;
1440 st->start_time = ts->cur_pcr;
1442 av_log(ts->stream, AV_LOG_DEBUG, "start=%0.3f pcr=%0.3f incr=%d\n",
1443 st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr);
1447 url_fseek(pb, pos, SEEK_SET);
1453 #define MAX_PACKET_READAHEAD ((128 * 1024) / 188)
1455 static int mpegts_raw_read_packet(AVFormatContext *s,
1458 MpegTSContext *ts = s->priv_data;
1460 int64_t pcr_h, next_pcr_h, pos;
1461 int pcr_l, next_pcr_l;
1462 uint8_t pcr_buf[12];
1464 if (av_new_packet(pkt, TS_PACKET_SIZE) < 0)
1465 return AVERROR(ENOMEM);
1466 pkt->pos= url_ftell(s->pb);
1467 ret = read_packet(s, pkt->data, ts->raw_packet_size);
1469 av_free_packet(pkt);
1472 if (ts->mpeg2ts_compute_pcr) {
1473 /* compute exact PCR for each packet */
1474 if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) {
1475 /* we read the next PCR (XXX: optimize it by using a bigger buffer */
1476 pos = url_ftell(s->pb);
1477 for(i = 0; i < MAX_PACKET_READAHEAD; i++) {
1478 url_fseek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
1479 get_buffer(s->pb, pcr_buf, 12);
1480 if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
1481 /* XXX: not precise enough */
1482 ts->pcr_incr = ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
1487 url_fseek(s->pb, pos, SEEK_SET);
1488 /* no next PCR found: we use previous increment */
1489 ts->cur_pcr = pcr_h * 300 + pcr_l;
1491 pkt->pts = ts->cur_pcr;
1492 pkt->duration = ts->pcr_incr;
1493 ts->cur_pcr += ts->pcr_incr;
1495 pkt->stream_index = 0;
1499 static int mpegts_read_packet(AVFormatContext *s,
1502 MpegTSContext *ts = s->priv_data;
1505 if (url_ftell(s->pb) != ts->last_pos) {
1506 /* seek detected, flush pes buffer */
1507 for (i = 0; i < NB_PID_MAX; i++) {
1508 if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
1509 PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
1510 av_freep(&pes->buffer);
1511 pes->data_index = 0;
1512 pes->state = MPEGTS_SKIP; /* skip until pes header */
1518 ret = handle_packets(ts, 0);
1520 /* flush pes data left */
1521 for (i = 0; i < NB_PID_MAX; i++) {
1522 if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
1523 PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
1524 if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
1525 new_pes_packet(pes, pkt);
1526 pes->state = MPEGTS_SKIP;
1534 ts->last_pos = url_ftell(s->pb);
1539 static int mpegts_read_close(AVFormatContext *s)
1541 MpegTSContext *ts = s->priv_data;
1546 for(i=0;i<NB_PID_MAX;i++)
1547 if (ts->pids[i]) mpegts_close_filter(ts, ts->pids[i]);
1552 static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index,
1553 int64_t *ppos, int64_t pos_limit)
1555 MpegTSContext *ts = s->priv_data;
1556 int64_t pos, timestamp;
1557 uint8_t buf[TS_PACKET_SIZE];
1558 int pcr_l, pcr_pid = ((PESContext*)s->streams[stream_index]->priv_data)->pcr_pid;
1559 const int find_next= 1;
1560 pos = ((*ppos + ts->raw_packet_size - 1 - ts->pos47) / ts->raw_packet_size) * ts->raw_packet_size + ts->pos47;
1563 url_fseek(s->pb, pos, SEEK_SET);
1564 if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
1565 return AV_NOPTS_VALUE;
1566 if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
1567 parse_pcr(×tamp, &pcr_l, buf) == 0) {
1570 pos += ts->raw_packet_size;
1574 pos -= ts->raw_packet_size;
1576 return AV_NOPTS_VALUE;
1577 url_fseek(s->pb, pos, SEEK_SET);
1578 if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
1579 return AV_NOPTS_VALUE;
1580 if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
1581 parse_pcr(×tamp, &pcr_l, buf) == 0) {
1591 #ifdef USE_SYNCPOINT_SEARCH
1593 static int read_seek2(AVFormatContext *s,
1602 int64_t ts_ret, ts_adj;
1603 int stream_index_gen_search;
1605 AVParserState *backup;
1607 backup = ff_store_parser_state(s);
1609 // detect direction of seeking for search purposes
1610 flags |= (target_ts - min_ts > (uint64_t)(max_ts - target_ts)) ?
1611 AVSEEK_FLAG_BACKWARD : 0;
1613 if (flags & AVSEEK_FLAG_BYTE) {
1614 // use position directly, we will search starting from it
1617 // search for some position with good timestamp match
1618 if (stream_index < 0) {
1619 stream_index_gen_search = av_find_default_stream_index(s);
1620 if (stream_index_gen_search < 0) {
1621 ff_restore_parser_state(s, backup);
1625 st = s->streams[stream_index_gen_search];
1626 // timestamp for default must be expressed in AV_TIME_BASE units
1627 ts_adj = av_rescale(target_ts,
1629 AV_TIME_BASE * (int64_t)st->time_base.num);
1632 stream_index_gen_search = stream_index;
1634 pos = av_gen_search(s, stream_index_gen_search, ts_adj,
1638 flags, &ts_ret, mpegts_get_pcr);
1640 ff_restore_parser_state(s, backup);
1645 // search for actual matching keyframe/starting position for all streams
1646 if (ff_gen_syncpoint_search(s, stream_index, pos,
1647 min_ts, target_ts, max_ts,
1649 ff_restore_parser_state(s, backup);
1653 ff_free_parser_state(s, backup);
1657 static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1660 if (flags & AVSEEK_FLAG_BACKWARD) {
1661 flags &= ~AVSEEK_FLAG_BACKWARD;
1662 ret = read_seek2(s, stream_index, INT64_MIN, target_ts, target_ts, flags);
1664 // for compatibility reasons, seek to the best-fitting timestamp
1665 ret = read_seek2(s, stream_index, INT64_MIN, target_ts, INT64_MAX, flags);
1667 ret = read_seek2(s, stream_index, target_ts, target_ts, INT64_MAX, flags);
1669 // for compatibility reasons, seek to the best-fitting timestamp
1670 ret = read_seek2(s, stream_index, INT64_MIN, target_ts, INT64_MAX, flags);
1677 static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1678 MpegTSContext *ts = s->priv_data;
1679 uint8_t buf[TS_PACKET_SIZE];
1682 if(av_seek_frame_binary(s, stream_index, target_ts, flags) < 0)
1685 pos= url_ftell(s->pb);
1688 url_fseek(s->pb, pos, SEEK_SET);
1689 if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
1691 // pid = AV_RB16(buf + 1) & 0x1fff;
1692 if(buf[1] & 0x40) break;
1693 pos += ts->raw_packet_size;
1695 url_fseek(s->pb, pos, SEEK_SET);
1702 /**************************************************************/
1703 /* parsing functions - called from other demuxers such as RTP */
1705 MpegTSContext *ff_mpegts_parse_open(AVFormatContext *s)
1709 ts = av_mallocz(sizeof(MpegTSContext));
1712 /* no stream case, currently used by RTP */
1713 ts->raw_packet_size = TS_PACKET_SIZE;
1719 /* return the consumed length if a packet was output, or -1 if no
1721 int ff_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt,
1722 const uint8_t *buf, int len)
1730 if (ts->stop_parse>0)
1732 if (len < TS_PACKET_SIZE)
1734 if (buf[0] != 0x47) {
1738 handle_packet(ts, buf);
1739 buf += TS_PACKET_SIZE;
1740 len -= TS_PACKET_SIZE;
1746 void ff_mpegts_parse_close(MpegTSContext *ts)
1750 for(i=0;i<NB_PID_MAX;i++)
1751 av_free(ts->pids[i]);
1755 AVInputFormat mpegts_demuxer = {
1757 NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),
1758 sizeof(MpegTSContext),
1765 .flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
1766 #ifdef USE_SYNCPOINT_SEARCH
1767 .read_seek2 = read_seek2,
1771 AVInputFormat mpegtsraw_demuxer = {
1773 NULL_IF_CONFIG_SMALL("MPEG-2 raw transport stream format"),
1774 sizeof(MpegTSContext),
1777 mpegts_raw_read_packet,
1781 .flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
1782 #ifdef USE_SYNCPOINT_SEARCH
1783 .read_seek2 = read_seek2,