path: root/libavformat/mpegts.c (plain)
blob: 513187472a731851fe4b892c8dee6fa5fe54c092

1	/*
2	* MPEG-2 transport stream (aka DVB) demuxer
3	* Copyright (c) 2002-2003 Fabrice Bellard
4	*
5	* This file is part of FFmpeg.
6	*
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.
11	*
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.
16	*
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
20	*/
21
22	#include "libavutil/buffer.h"
23	#include "libavutil/crc.h"
24	#include "libavutil/internal.h"
25	#include "libavutil/intreadwrite.h"
26	#include "libavutil/log.h"
27	#include "libavutil/dict.h"
28	#include "libavutil/mathematics.h"
29	#include "libavutil/opt.h"
30	#include "libavutil/avassert.h"
31	#include "libavcodec/bytestream.h"
32	#include "libavcodec/get_bits.h"
33	#include "libavcodec/opus.h"
34	#include "avformat.h"
35	#include "mpegts.h"
36	#include "internal.h"
37	#include "avio_internal.h"
38	#include "mpeg.h"
39	#include "isom.h"
40
41	/* maximum size in which we look for synchronization if
42	* synchronization is lost */
43	#define MAX_RESYNC_SIZE 65536
44
45	#define MAX_PES_PAYLOAD 200 * 1024
46
47	#define MAX_MP4_DESCR_COUNT 16
48
49	#define MOD_UNLIKELY(modulus, dividend, divisor, prev_dividend) \
50	do { \
51	if ((prev_dividend) == 0 || (dividend) - (prev_dividend) != (divisor)) \
52	(modulus) = (dividend) % (divisor); \
53	(prev_dividend) = (dividend); \
54	} while (0)
55
56	enum MpegTSFilterType {
57	MPEGTS_PES,
58	MPEGTS_SECTION,
59	MPEGTS_PCR,
60	};
61
62	typedef struct MpegTSFilter MpegTSFilter;
63
64	typedef int PESCallback (MpegTSFilter *f, const uint8_t *buf, int len,
65	int is_start, int64_t pos);
66
67	typedef struct MpegTSPESFilter {
68	PESCallback *pes_cb;
69	void *opaque;
70	} MpegTSPESFilter;
71
72	typedef void SectionCallback (MpegTSFilter *f, const uint8_t *buf, int len);
73
74	typedef void SetServiceCallback (void *opaque, int ret);
75
76	typedef struct MpegTSSectionFilter {
77	int section_index;
78	int section_h_size;
79	int last_ver;
80	unsigned crc;
81	unsigned last_crc;
82	uint8_t *section_buf;
83	unsigned int check_crc : 1;
84	unsigned int end_of_section_reached : 1;
85	SectionCallback *section_cb;
86	void *opaque;
87	} MpegTSSectionFilter;
88
89	struct MpegTSFilter {
90	int pid;
91	int es_id;
92	int last_cc; /* last cc code (-1 if first packet) */
93	int64_t last_pcr;
94	enum MpegTSFilterType type;
95	union {
96	MpegTSPESFilter pes_filter;
97	MpegTSSectionFilter section_filter;
98	} u;
99	};
100
101	#define MAX_PIDS_PER_PROGRAM 64
102	struct Program {
103	unsigned int id; // program id/service id
104	unsigned int nb_pids;
105	unsigned int pids[MAX_PIDS_PER_PROGRAM];
106
107	/** have we found pmt for this program */
108	int pmt_found;
109	};
110
111	struct MpegTSContext {
112	const AVClass *class;
113	/* user data */
114	AVFormatContext *stream;
115	/** raw packet size, including FEC if present */
116	int raw_packet_size;
117
118	int size_stat[3];
119	int size_stat_count;
120	#define SIZE_STAT_THRESHOLD 10
121
122	int64_t pos47_full;
123
124	/** if true, all pids are analyzed to find streams */
125	int auto_guess;
126
127	/** compute exact PCR for each transport stream packet */
128	int mpeg2ts_compute_pcr;
129
130	/** fix dvb teletext pts */
131	int fix_teletext_pts;
132
133	int64_t cur_pcr; /**< used to estimate the exact PCR */
134	int pcr_incr; /**< used to estimate the exact PCR */
135
136	/* data needed to handle file based ts */
137	/** stop parsing loop */
138	int stop_parse;
139	/** packet containing Audio/Video data */
140	AVPacket *pkt;
141	/** to detect seek */
142	int64_t last_pos;
143
144	int skip_changes;
145	int skip_clear;
146
147	int scan_all_pmts;
148
149	int resync_size;
150
151	/******************************************/
152	/* private mpegts data */
153	/* scan context */
154	/** structure to keep track of Program->pids mapping */
155	unsigned int nb_prg;
156	struct Program *prg;
157
158	int8_t crc_validity[NB_PID_MAX];
159	/** filters for various streams specified by PMT + for the PAT and PMT */
160	MpegTSFilter *pids[NB_PID_MAX];
161	int current_pid;
162	};
163
164	#define MPEGTS_OPTIONS \
165	{ "resync_size", "set 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 }
166
167	static const AVOption options[] = {
168	MPEGTS_OPTIONS,
169	{"fix_teletext_pts", "try to fix pts values of dvb teletext streams", offsetof(MpegTSContext, fix_teletext_pts), AV_OPT_TYPE_BOOL,
170	{.i64 = 1}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
171	{"ts_packetsize", "output option carrying the raw packet size", offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT,
172	{.i64 = 0}, 0, 0, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
173	{"scan_all_pmts", "scan and combine all PMTs", offsetof(MpegTSContext, scan_all_pmts), AV_OPT_TYPE_BOOL,
174	{ .i64 = -1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM },
175	{"skip_changes", "skip changing / adding streams / programs", offsetof(MpegTSContext, skip_changes), AV_OPT_TYPE_BOOL,
176	{.i64 = 0}, 0, 1, 0 },
177	{"skip_clear", "skip clearing programs", offsetof(MpegTSContext, skip_clear), AV_OPT_TYPE_BOOL,
178	{.i64 = 0}, 0, 1, 0 },
179	{ NULL },
180	};
181
182	static const AVClass mpegts_class = {
183	.class_name = "mpegts demuxer",
184	.item_name = av_default_item_name,
185	.option = options,
186	.version = LIBAVUTIL_VERSION_INT,
187	};
188
189	static const AVOption raw_options[] = {
190	MPEGTS_OPTIONS,
191	{ "compute_pcr", "compute exact PCR for each transport stream packet",
192	offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_BOOL,
193	{ .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
194	{ "ts_packetsize", "output option carrying the raw packet size",
195	offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT,
196	{ .i64 = 0 }, 0, 0,
197	AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
198	{ NULL },
199	};
200
201	static const AVClass mpegtsraw_class = {
202	.class_name = "mpegtsraw demuxer",
203	.item_name = av_default_item_name,
204	.option = raw_options,
205	.version = LIBAVUTIL_VERSION_INT,
206	};
207
208	/* TS stream handling */
209
210	enum MpegTSState {
211	MPEGTS_HEADER = 0,
212	MPEGTS_PESHEADER,
213	MPEGTS_PESHEADER_FILL,
214	MPEGTS_PAYLOAD,
215	MPEGTS_SKIP,
216	};
217
218	/* enough for PES header + length */
219	#define PES_START_SIZE 6
220	#define PES_HEADER_SIZE 9
221	#define MAX_PES_HEADER_SIZE (9 + 255)
222
223	typedef struct PESContext {
224	int pid;
225	int pcr_pid; /**< if -1 then all packets containing PCR are considered */
226	int stream_type;
227	MpegTSContext *ts;
228	AVFormatContext *stream;
229	AVStream *st;
230	AVStream *sub_st; /**< stream for the embedded AC3 stream in HDMV TrueHD */
231	enum MpegTSState state;
232	/* used to get the format */
233	int data_index;
234	int flags; /**< copied to the AVPacket flags */
235	int total_size;
236	int pes_header_size;
237	int extended_stream_id;
238	uint8_t stream_id;
239	int64_t pts, dts;
240	int64_t ts_packet_pos; /**< position of first TS packet of this PES packet */
241	uint8_t header[MAX_PES_HEADER_SIZE];
242	AVBufferRef *buffer;
243	SLConfigDescr sl;
244	} PESContext;
245
246	extern AVInputFormat ff_mpegts_demuxer;
247
248	static struct Program * get_program(MpegTSContext *ts, unsigned int programid)
249	{
250	int i;
251	for (i = 0; i < ts->nb_prg; i++) {
252	if (ts->prg[i].id == programid) {
253	return &ts->prg[i];
254	}
255	}
256	return NULL;
257	}
258
259	static void clear_avprogram(MpegTSContext *ts, unsigned int programid)
260	{
261	AVProgram *prg = NULL;
262	int i;
263
264	for (i = 0; i < ts->stream->nb_programs; i++)
265	if (ts->stream->programs[i]->id == programid) {
266	prg = ts->stream->programs[i];
267	break;
268	}
269	if (!prg)
270	return;
271	prg->nb_stream_indexes = 0;
272	}
273
274	static void clear_program(MpegTSContext *ts, unsigned int programid)
275	{
276	int i;
277
278	clear_avprogram(ts, programid);
279	for (i = 0; i < ts->nb_prg; i++)
280	if (ts->prg[i].id == programid) {
281	ts->prg[i].nb_pids = 0;
282	ts->prg[i].pmt_found = 0;
283	}
284	}
285
286	static void clear_programs(MpegTSContext *ts)
287	{
288	av_freep(&ts->prg);
289	ts->nb_prg = 0;
290	}
291
292	static void add_pat_entry(MpegTSContext *ts, unsigned int programid)
293	{
294	struct Program *p;
295	if (av_reallocp_array(&ts->prg, ts->nb_prg + 1, sizeof(*ts->prg)) < 0) {
296	ts->nb_prg = 0;
297	return;
298	}
299	p = &ts->prg[ts->nb_prg];
300	p->id = programid;
301	p->nb_pids = 0;
302	p->pmt_found = 0;
303	ts->nb_prg++;
304	}
305
306	static void add_pid_to_pmt(MpegTSContext *ts, unsigned int programid,
307	unsigned int pid)
308	{
309	struct Program *p = get_program(ts, programid);
310	int i;
311	if (!p)
312	return;
313
314	if (p->nb_pids >= MAX_PIDS_PER_PROGRAM)
315	return;
316
317	for (i = 0; i < p->nb_pids; i++)
318	if (p->pids[i] == pid)
319	return;
320
321	p->pids[p->nb_pids++] = pid;
322	}
323
324	static void set_pmt_found(MpegTSContext *ts, unsigned int programid)
325	{
326	struct Program *p = get_program(ts, programid);
327	if (!p)
328	return;
329
330	p->pmt_found = 1;
331	}
332
333	static void set_pcr_pid(AVFormatContext *s, unsigned int programid, unsigned int pid)
334	{
335	int i;
336	for (i = 0; i < s->nb_programs; i++) {
337	if (s->programs[i]->id == programid) {
338	s->programs[i]->pcr_pid = pid;
339	break;
340	}
341	}
342	}
343
344	/**
345	* @brief discard_pid() decides if the pid is to be discarded according
346	* to caller's programs selection
347	* @param ts : - TS context
348	* @param pid : - pid
349	* @return 1 if the pid is only comprised in programs that have .discard=AVDISCARD_ALL
350	* 0 otherwise
351	*/
352	static int discard_pid(MpegTSContext *ts, unsigned int pid)
353	{
354	int i, j, k;
355	int used = 0, discarded = 0;
356	struct Program *p;
357
358	/* If none of the programs have .discard=AVDISCARD_ALL then there's
359	* no way we have to discard this packet */
360	for (k = 0; k < ts->stream->nb_programs; k++)
361	if (ts->stream->programs[k]->discard == AVDISCARD_ALL)
362	break;
363	if (k == ts->stream->nb_programs)
364	return 0;
365
366	for (i = 0; i < ts->nb_prg; i++) {
367	p = &ts->prg[i];
368	for (j = 0; j < p->nb_pids; j++) {
369	if (p->pids[j] != pid)
370	continue;
371	// is program with id p->id set to be discarded?
372	for (k = 0; k < ts->stream->nb_programs; k++) {
373	if (ts->stream->programs[k]->id == p->id) {
374	if (ts->stream->programs[k]->discard == AVDISCARD_ALL)
375	discarded++;
376	else
377	used++;
378	}
379	}
380	}
381	}
382
383	return !used && discarded;
384	}
385
386	/**
387	* Assemble PES packets out of TS packets, and then call the "section_cb"
388	* function when they are complete.
389	*/
390	static void write_section_data(MpegTSContext *ts, MpegTSFilter *tss1,
391	const uint8_t *buf, int buf_size, int is_start)
392	{
393	MpegTSSectionFilter *tss = &tss1->u.section_filter;
394	int len;
395
396	if (is_start) {
397	memcpy(tss->section_buf, buf, buf_size);
398	tss->section_index = buf_size;
399	tss->section_h_size = -1;
400	tss->end_of_section_reached = 0;
401	} else {
402	if (tss->end_of_section_reached)
403	return;
404	len = 4096 - tss->section_index;
405	if (buf_size < len)
406	len = buf_size;
407	memcpy(tss->section_buf + tss->section_index, buf, len);
408	tss->section_index += len;
409	}
410
411	/* compute section length if possible */
412	if (tss->section_h_size == -1 && tss->section_index >= 3) {
413	len = (AV_RB16(tss->section_buf + 1) & 0xfff) + 3;
414	if (len > 4096)
415	return;
416	tss->section_h_size = len;
417	}
418
419	if (tss->section_h_size != -1 &&
420	tss->section_index >= tss->section_h_size) {
421	int crc_valid = 1;
422	tss->end_of_section_reached = 1;
423
424	if (tss->check_crc) {
425	crc_valid = !av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1, tss->section_buf, tss->section_h_size);
426	if (tss->section_h_size >= 4)
427	tss->crc = AV_RB32(tss->section_buf + tss->section_h_size - 4);
428
429	if (crc_valid) {
430	ts->crc_validity[ tss1->pid ] = 100;
431	}else if (ts->crc_validity[ tss1->pid ] > -10) {
432	ts->crc_validity[ tss1->pid ]--;
433	}else
434	crc_valid = 2;
435	}
436	if (crc_valid) {
437	tss->section_cb(tss1, tss->section_buf, tss->section_h_size);
438	if (crc_valid != 1)
439	tss->last_ver = -1;
440	}
441	}
442	}
443
444	static MpegTSFilter *mpegts_open_filter(MpegTSContext *ts, unsigned int pid,
445	enum MpegTSFilterType type)
446	{
447	MpegTSFilter *filter;
448
449	av_log(ts->stream, AV_LOG_TRACE, "Filter: pid=0x%x type=%d\n", pid, type);
450
451	if (pid >= NB_PID_MAX || ts->pids[pid])
452	return NULL;
453	filter = av_mallocz(sizeof(MpegTSFilter));
454	if (!filter)
455	return NULL;
456	ts->pids[pid] = filter;
457
458	filter->type = type;
459	filter->pid = pid;
460	filter->es_id = -1;
461	filter->last_cc = -1;
462	filter->last_pcr= -1;
463
464	return filter;
465	}
466
467	static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts,
468	unsigned int pid,
469	SectionCallback *section_cb,
470	void *opaque,
471	int check_crc)
472	{
473	MpegTSFilter *filter;
474	MpegTSSectionFilter *sec;
475
476	if (!(filter = mpegts_open_filter(ts, pid, MPEGTS_SECTION)))
477	return NULL;
478	sec = &filter->u.section_filter;
479	sec->section_cb = section_cb;
480	sec->opaque = opaque;
481	sec->section_buf = av_malloc(MAX_SECTION_SIZE);
482	sec->check_crc = check_crc;
483	sec->last_ver = -1;
484
485	if (!sec->section_buf) {
486	av_free(filter);
487	return NULL;
488	}
489	return filter;
490	}
491
492	static MpegTSFilter *mpegts_open_pes_filter(MpegTSContext *ts, unsigned int pid,
493	PESCallback *pes_cb,
494	void *opaque)
495	{
496	MpegTSFilter *filter;
497	MpegTSPESFilter *pes;
498
499	if (!(filter = mpegts_open_filter(ts, pid, MPEGTS_PES)))
500	return NULL;
501
502	pes = &filter->u.pes_filter;
503	pes->pes_cb = pes_cb;
504	pes->opaque = opaque;
505	return filter;
506	}
507
508	static MpegTSFilter *mpegts_open_pcr_filter(MpegTSContext *ts, unsigned int pid)
509	{
510	return mpegts_open_filter(ts, pid, MPEGTS_PCR);
511	}
512
513	static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
514	{
515	int pid;
516
517	pid = filter->pid;
518	if (filter->type == MPEGTS_SECTION)
519	av_freep(&filter->u.section_filter.section_buf);
520	else if (filter->type == MPEGTS_PES) {
521	PESContext *pes = filter->u.pes_filter.opaque;
522	av_buffer_unref(&pes->buffer);
523	/* referenced private data will be freed later in
524	* avformat_close_input */
525	if (!((PESContext *)filter->u.pes_filter.opaque)->st) {
526	av_freep(&filter->u.pes_filter.opaque);
527	}
528	}
529
530	av_free(filter);
531	ts->pids[pid] = NULL;
532	}
533
534	static int analyze(const uint8_t *buf, int size, int packet_size,
535	int probe)
536	{
537	int stat[TS_MAX_PACKET_SIZE];
538	int stat_all = 0;
539	int i;
540	int best_score = 0;
541
542	memset(stat, 0, packet_size * sizeof(*stat));
543
544	for (i = 0; i < size - 3; i++) {
545	if (buf[i] == 0x47) {
546	int pid = AV_RB16(buf+1) & 0x1FFF;
547	int asc = buf[i + 3] & 0x30;
548	if (!probe || pid == 0x1FFF || asc) {
549	int x = i % packet_size;
550	stat[x]++;
551	stat_all++;
552	if (stat[x] > best_score) {
553	best_score = stat[x];
554	}
555	}
556	}
557	}
558
559	return best_score - FFMAX(stat_all - 10*best_score, 0)/10;
560	}
561
562	/* autodetect fec presence. Must have at least 1024 bytes */
563	static int get_packet_size(const uint8_t *buf, int size)
564	{
565	int score, fec_score, dvhs_score;
566
567	if (size < (TS_FEC_PACKET_SIZE * 5 + 1))
568	return AVERROR_INVALIDDATA;
569
570	score = analyze(buf, size, TS_PACKET_SIZE, 0);
571	dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, 0);
572	fec_score = analyze(buf, size, TS_FEC_PACKET_SIZE, 0);
573	av_log(NULL, AV_LOG_TRACE, "score: %d, dvhs_score: %d, fec_score: %d \n",
574	score, dvhs_score, fec_score);
575
576	if (score > fec_score && score > dvhs_score)
577	return TS_PACKET_SIZE;
578	else if (dvhs_score > score && dvhs_score > fec_score)
579	return TS_DVHS_PACKET_SIZE;
580	else if (score < fec_score && dvhs_score < fec_score)
581	return TS_FEC_PACKET_SIZE;
582	else
583	return AVERROR_INVALIDDATA;
584	}
585
586	typedef struct SectionHeader {
587	uint8_t tid;
588	uint16_t id;
589	uint8_t version;
590	uint8_t sec_num;
591	uint8_t last_sec_num;
592	} SectionHeader;
593
594	static int skip_identical(const SectionHeader *h, MpegTSSectionFilter *tssf)
595	{
596	if (h->version == tssf->last_ver && tssf->last_crc == tssf->crc)
597	return 1;
598
599	tssf->last_ver = h->version;
600	tssf->last_crc = tssf->crc;
601
602	return 0;
603	}
604
605	static inline int get8(const uint8_t **pp, const uint8_t *p_end)
606	{
607	const uint8_t *p;
608	int c;
609
610	p = *pp;
611	if (p >= p_end)
612	return AVERROR_INVALIDDATA;
613	c = *p++;
614	*pp = p;
615	return c;
616	}
617
618	static inline int get16(const uint8_t **pp, const uint8_t *p_end)
619	{
620	const uint8_t *p;
621	int c;
622
623	p = *pp;
624	if (1 >= p_end - p)
625	return AVERROR_INVALIDDATA;
626	c = AV_RB16(p);
627	p += 2;
628	*pp = p;
629	return c;
630	}
631
632	/* read and allocate a DVB string preceded by its length */
633	static char *getstr8(const uint8_t **pp, const uint8_t *p_end)
634	{
635	int len;
636	const uint8_t *p;
637	char *str;
638
639	p = *pp;
640	len = get8(&p, p_end);
641	if (len < 0)
642	return NULL;
643	if (len > p_end - p)
644	return NULL;
645	str = av_malloc(len + 1);
646	if (!str)
647	return NULL;
648	memcpy(str, p, len);
649	str[len] = '\0';
650	p += len;
651	*pp = p;
652	return str;
653	}
654
655	static int parse_section_header(SectionHeader *h,
656	const uint8_t **pp, const uint8_t *p_end)
657	{
658	int val;
659
660	val = get8(pp, p_end);
661	if (val < 0)
662	return val;
663	h->tid = val;
664	*pp += 2;
665	val = get16(pp, p_end);
666	if (val < 0)
667	return val;
668	h->id = val;
669	val = get8(pp, p_end);
670	if (val < 0)
671	return val;
672	h->version = (val >> 1) & 0x1f;
673	val = get8(pp, p_end);
674	if (val < 0)
675	return val;
676	h->sec_num = val;
677	val = get8(pp, p_end);
678	if (val < 0)
679	return val;
680	h->last_sec_num = val;
681	return 0;
682	}
683
684	typedef struct StreamType {
685	uint32_t stream_type;
686	enum AVMediaType codec_type;
687	enum AVCodecID codec_id;
688	} StreamType;
689
690	static const StreamType ISO_types[] = {
691	{ 0x01, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
692	{ 0x02, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
693	{ 0x03, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
694	{ 0x04, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
695	{ 0x0f, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC },
696	{ 0x10, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG4 },
697	/* Makito encoder sets stream type 0x11 for AAC,
698	* so auto-detect LOAS/LATM instead of hardcoding it. */
699	#if !CONFIG_LOAS_DEMUXER
700	{ 0x11, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC_LATM }, /* LATM syntax */
701	#endif
702	{ 0x1b, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 },
703	{ 0x1c, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC },
704	{ 0x20, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 },
705	{ 0x21, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_JPEG2000 },
706	{ 0x24, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC },
707	{ 0x42, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_CAVS },
708	{ 0xd1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
709	{ 0xea, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
710	{ 0 },
711	};
712
713	static const StreamType HDMV_types[] = {
714	{ 0x80, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_BLURAY },
715	{ 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
716	{ 0x82, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
717	{ 0x83, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_TRUEHD },
718	{ 0x84, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
719	{ 0x85, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD */
720	{ 0x86, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD MASTER*/
721	{ 0xa1, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC3 Secondary Audio */
722	{ 0xa2, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS Express Secondary Audio */
723	{ 0x90, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_HDMV_PGS_SUBTITLE },
724	{ 0x92, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_HDMV_TEXT_SUBTITLE },
725	{ 0 },
726	};
727
728	/* SCTE types */
729	static const StreamType SCTE_types[] = {
730	{ 0x86, AVMEDIA_TYPE_DATA, AV_CODEC_ID_SCTE_35 },
731	{ 0 },
732	};
733
734	/* ATSC ? */
735	static const StreamType MISC_types[] = {
736	{ 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
737	{ 0x8a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
738	{ 0 },
739	};
740
741	static const StreamType REGD_types[] = {
742	{ MKTAG('d', 'r', 'a', 'c'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
743	{ MKTAG('A', 'C', '-', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
744	{ MKTAG('B', 'S', 'S', 'D'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_S302M },
745	{ MKTAG('D', 'T', 'S', '1'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
746	{ MKTAG('D', 'T', 'S', '2'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
747	{ MKTAG('D', 'T', 'S', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
748	{ MKTAG('D', 'T', 'S', 'H'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
749	{ MKTAG('E', 'A', 'C', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
750	{ MKTAG('H', 'E', 'V', 'C'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC },
751	{ MKTAG('K', 'L', 'V', 'A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV },
752	{ MKTAG('I', 'D', '3', ' '), AVMEDIA_TYPE_DATA, AV_CODEC_ID_TIMED_ID3 },
753	{ MKTAG('V', 'C', '-', '1'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
754	{ MKTAG('O', 'p', 'u', 's'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_OPUS },
755	{ MKTAG('D', 'R', 'A', '1'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DRA },
756	{ MKTAG('d', 'v', 'h', 'e'), AVMEDIA_TYPE_VIDEO , AV_CODEC_ID_HEVC}, /* HEVC Dobly vision ES dvhe*/
757	{ MKTAG('D', 'O', 'V', 'I'), AVMEDIA_TYPE_VIDEO , AV_CODEC_ID_HEVC}, /* HEVC Dobly vision ES dovi*/
758	{ 0 },
759	};
760
761	static const StreamType METADATA_types[] = {
762	{ MKTAG('K','L','V','A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV },
763	{ MKTAG('I','D','3',' '), AVMEDIA_TYPE_DATA, AV_CODEC_ID_TIMED_ID3 },
764	{ 0 },
765	};
766
767	/* descriptor present */
768	static const StreamType DESC_types[] = {
769	{ 0x6a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, /* AC-3 descriptor */
770	{ 0x7a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC-3 descriptor */
771	{ 0x7b, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
772	{ 0x56, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_TELETEXT },
773	{ 0x59, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_SUBTITLE }, /* subtitling descriptor */
774	{ 0 },
775	};
776
777	static void mpegts_find_stream_type(AVStream *st,
778	uint32_t stream_type,
779	const StreamType *types)
780	{
781	for (; types->stream_type; types++)
782	if (stream_type == types->stream_type) {
783	if (st->codecpar->codec_type != types->codec_type ||
784	st->codecpar->codec_id != types->codec_id) {
785	st->codecpar->codec_type = types->codec_type;
786	st->codecpar->codec_id = types->codec_id;
787	st->internal->need_context_update = 1;
788	}
789	st->request_probe = 0;
790	return;
791	}
792	}
793
794	static int mpegts_set_stream_info(AVStream *st, PESContext *pes,
795	uint32_t stream_type, uint32_t prog_reg_desc)
796	{
797	int old_codec_type = st->codecpar->codec_type;
798	int old_codec_id = st->codecpar->codec_id;
799	int old_codec_tag = st->codecpar->codec_tag;
800
801	if (avcodec_is_open(st->internal->avctx)) {
802	av_log(pes->stream, AV_LOG_DEBUG, "cannot set stream info, internal codec is open\n");
803	return 0;
804	}
805
806	avpriv_set_pts_info(st, 33, 1, 90000);
807	st->priv_data = pes;
808	st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
809	st->codecpar->codec_id = AV_CODEC_ID_NONE;
810	st->need_parsing = AVSTREAM_PARSE_FULL;
811	pes->st = st;
812	pes->stream_type = stream_type;
813
814	av_log(pes->stream, AV_LOG_DEBUG,
815	"stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n",
816	st->index, pes->stream_type, pes->pid, (char *)&prog_reg_desc);
817
818	st->codecpar->codec_tag = pes->stream_type;
819
820	mpegts_find_stream_type(st, pes->stream_type, ISO_types);
821	if (pes->stream_type == 4)
822	st->request_probe = 50;
823	if ((prog_reg_desc == AV_RL32("HDMV") ||
824	prog_reg_desc == AV_RL32("HDPR")) &&
825	st->codecpar->codec_id == AV_CODEC_ID_NONE) {
826	mpegts_find_stream_type(st, pes->stream_type, HDMV_types);
827	if (pes->stream_type == 0x83) {
828	// HDMV TrueHD streams also contain an AC3 coded version of the
829	// audio track - add a second stream for this
830	AVStream *sub_st;
831	// priv_data cannot be shared between streams
832	PESContext *sub_pes = av_malloc(sizeof(*sub_pes));
833	if (!sub_pes)
834	return AVERROR(ENOMEM);
835	memcpy(sub_pes, pes, sizeof(*sub_pes));
836
837	sub_st = avformat_new_stream(pes->stream, NULL);
838	if (!sub_st) {
839	av_free(sub_pes);
840	return AVERROR(ENOMEM);
841	}
842
843	sub_st->id = pes->pid;
844	avpriv_set_pts_info(sub_st, 33, 1, 90000);
845	sub_st->priv_data = sub_pes;
846	sub_st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
847	sub_st->codecpar->codec_id = AV_CODEC_ID_AC3;
848	sub_st->need_parsing = AVSTREAM_PARSE_FULL;
849	sub_pes->sub_st = pes->sub_st = sub_st;
850	}
851	if (pes->stream_type == 0x81) {
852	// HDMV AC3 streams also contain an TRUEHD coded version of the
853	// audio track - add a second stream for this
854	AVStream *sub_st;
855	// priv_data cannot be shared between streams
856	PESContext *sub_pes = av_malloc(sizeof(*sub_pes));
857	if (!sub_pes)
858	return AVERROR(ENOMEM);
859	memcpy(sub_pes, pes, sizeof(*sub_pes));
860
861	sub_st = avformat_new_stream(pes->stream, NULL);
862	if (!sub_st) {
863	av_free(sub_pes);
864	return AVERROR(ENOMEM);
865	}
866
867	sub_st->id = pes->pid;
868	avpriv_set_pts_info(sub_st, 33, 1, 90000);
869	sub_st->priv_data = sub_pes;
870	sub_st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
871	sub_st->codec->codec_id = AV_CODEC_ID_TRUEHD;
872	sub_st->need_parsing = AVSTREAM_PARSE_FULL;
873	sub_st->discard = AVDISCARD_ALL;
874	sub_pes->sub_st = pes->sub_st = sub_st;
875	}
876	}
877	if (st->codec->codec_id == AV_CODEC_ID_NONE && pes->stream_type == 0x82) {
878	AVStream *sub_st;
879	PESContext *sub_pes = av_malloc(sizeof(*sub_pes));
880	if (!sub_pes)
881	return AVERROR(ENOMEM);
882	memcpy(sub_pes, pes, sizeof(*sub_pes));
883	sub_st = avformat_new_stream(pes->stream, NULL);
884	if (!sub_st) {
885	av_free(sub_pes);
886	return AVERROR(ENOMEM);
887	}
888
889	sub_st->id = pes->pid;
890	avpriv_set_pts_info(sub_st, 33, 1, 90000);
891	sub_st->priv_data = sub_pes;
892	sub_st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
893	sub_st->codec->codec_id = AV_CODEC_ID_DTS;
894	sub_st->need_parsing = AVSTREAM_PARSE_FULL;
895	sub_pes->sub_st = pes->sub_st = sub_st;
896	}
897	if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
898	mpegts_find_stream_type(st, pes->stream_type, MISC_types);
899	if (st->codecpar->codec_id == AV_CODEC_ID_NONE) {
900	st->codecpar->codec_id = old_codec_id;
901	st->codecpar->codec_type = old_codec_type;
902	}
903	if ((st->codecpar->codec_id == AV_CODEC_ID_NONE ||
904	(st->request_probe > 0 && st->request_probe < AVPROBE_SCORE_STREAM_RETRY / 5)) &&
905	st->probe_packets > 0 &&
906	stream_type == STREAM_TYPE_PRIVATE_DATA) {
907	st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
908	st->codecpar->codec_id = AV_CODEC_ID_BIN_DATA;
909	st->request_probe = AVPROBE_SCORE_STREAM_RETRY / 5;
910	}
911
912	/* queue a context update if properties changed */
913	if (old_codec_type != st->codecpar->codec_type ||
914	old_codec_id != st->codecpar->codec_id ||
915	old_codec_tag != st->codecpar->codec_tag)
916	st->internal->need_context_update = 1;
917
918	return 0;
919	}
920
921	static void reset_pes_packet_state(PESContext *pes)
922	{
923	pes->pts = AV_NOPTS_VALUE;
924	pes->dts = AV_NOPTS_VALUE;
925	pes->data_index = 0;
926	pes->flags = 0;
927	av_buffer_unref(&pes->buffer);
928	}
929
930	static void new_data_packet(const uint8_t *buffer, int len, AVPacket *pkt)
931	{
932	av_init_packet(pkt);
933	pkt->data = (uint8_t *)buffer;
934	pkt->size = len;
935	}
936
937	static int new_pes_packet(PESContext *pes, AVPacket *pkt)
938	{
939	char *sd;
940
941	av_init_packet(pkt);
942
943	pkt->buf = pes->buffer;
944	pkt->data = pes->buffer->data;
945	pkt->size = pes->data_index;
946
947	if (pes->total_size != MAX_PES_PAYLOAD &&
948	pes->pes_header_size + pes->data_index != pes->total_size +
949	PES_START_SIZE) {
950	av_log(pes->stream, AV_LOG_WARNING, "PES packet size mismatch\n");
951	pes->flags |= AV_PKT_FLAG_CORRUPT;
952	}
953	memset(pkt->data + pkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
954
955	// Separate out the AC3 substream from an HDMV combined TrueHD/AC3 PID
956	if (pes->sub_st && pes->stream_type == 0x83 && pes->extended_stream_id == 0x76)
957	pkt->stream_index = pes->sub_st->index;
958	else if (pes->sub_st && pes->stream_type == 0x81 && pes->extended_stream_id == 0x72)
959	pkt->stream_index = pes->sub_st->index;
960	else
961	pkt->stream_index = pes->st->index;
962	pkt->pts = pes->pts;
963	pkt->dts = pes->dts;
964	/* store position of first TS packet of this PES packet */
965	pkt->pos = pes->ts_packet_pos;
966	pkt->flags = pes->flags;
967
968	pes->buffer = NULL;
969	reset_pes_packet_state(pes);
970
971	sd = av_packet_new_side_data(pkt, AV_PKT_DATA_MPEGTS_STREAM_ID, 1);
972	if (!sd)
973	return AVERROR(ENOMEM);
974	*sd = pes->stream_id;
975
976	return 0;
977	}
978
979	static uint64_t get_ts64(GetBitContext *gb, int bits)
980	{
981	if (get_bits_left(gb) < bits)
982	return AV_NOPTS_VALUE;
983	return get_bits64(gb, bits);
984	}
985
986	static int read_sl_header(PESContext *pes, SLConfigDescr *sl,
987	const uint8_t *buf, int buf_size)
988	{
989	GetBitContext gb;
990	int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0;
991	int padding_flag = 0, padding_bits = 0, inst_bitrate_flag = 0;
992	int dts_flag = -1, cts_flag = -1;
993	int64_t dts = AV_NOPTS_VALUE, cts = AV_NOPTS_VALUE;
994	uint8_t buf_padded[128 + AV_INPUT_BUFFER_PADDING_SIZE];
995	int buf_padded_size = FFMIN(buf_size, sizeof(buf_padded) - AV_INPUT_BUFFER_PADDING_SIZE);
996
997	memcpy(buf_padded, buf, buf_padded_size);
998
999	init_get_bits(&gb, buf_padded, buf_padded_size * 8);
1000
1001	if (sl->use_au_start)
1002	au_start_flag = get_bits1(&gb);
1003	if (sl->use_au_end)
1004	au_end_flag = get_bits1(&gb);
1005	if (!sl->use_au_start && !sl->use_au_end)
1006	au_start_flag = au_end_flag = 1;
1007	if (sl->ocr_len > 0)
1008	ocr_flag = get_bits1(&gb);
1009	if (sl->use_idle)
1010	idle_flag = get_bits1(&gb);
1011	if (sl->use_padding)
1012	padding_flag = get_bits1(&gb);
1013	if (padding_flag)
1014	padding_bits = get_bits(&gb, 3);
1015
1016	if (!idle_flag && (!padding_flag || padding_bits != 0)) {
1017	if (sl->packet_seq_num_len)
1018	skip_bits_long(&gb, sl->packet_seq_num_len);
1019	if (sl->degr_prior_len)
1020	if (get_bits1(&gb))
1021	skip_bits(&gb, sl->degr_prior_len);
1022	if (ocr_flag)
1023	skip_bits_long(&gb, sl->ocr_len);
1024	if (au_start_flag) {
1025	if (sl->use_rand_acc_pt)
1026	get_bits1(&gb);
1027	if (sl->au_seq_num_len > 0)
1028	skip_bits_long(&gb, sl->au_seq_num_len);
1029	if (sl->use_timestamps) {
1030	dts_flag = get_bits1(&gb);
1031	cts_flag = get_bits1(&gb);
1032	}
1033	}
1034	if (sl->inst_bitrate_len)
1035	inst_bitrate_flag = get_bits1(&gb);
1036	if (dts_flag == 1)
1037	dts = get_ts64(&gb, sl->timestamp_len);
1038	if (cts_flag == 1)
1039	cts = get_ts64(&gb, sl->timestamp_len);
1040	if (sl->au_len > 0)
1041	skip_bits_long(&gb, sl->au_len);
1042	if (inst_bitrate_flag)
1043	skip_bits_long(&gb, sl->inst_bitrate_len);
1044	}
1045
1046	if (dts != AV_NOPTS_VALUE)
1047	pes->dts = dts;
1048	if (cts != AV_NOPTS_VALUE)
1049	pes->pts = cts;
1050
1051	if (sl->timestamp_len && sl->timestamp_res)
1052	avpriv_set_pts_info(pes->st, sl->timestamp_len, 1, sl->timestamp_res);
1053
1054	return (get_bits_count(&gb) + 7) >> 3;
1055	}
1056
1057	/* return non zero if a packet could be constructed */
1058	static int mpegts_push_data(MpegTSFilter *filter,
1059	const uint8_t *buf, int buf_size, int is_start,
1060	int64_t pos)
1061	{
1062	PESContext *pes = filter->u.pes_filter.opaque;
1063	MpegTSContext *ts = pes->ts;
1064	const uint8_t *p;
1065	int ret, len, code;
1066
1067	if (!ts->pkt)
1068	return 0;
1069
1070	if (is_start) {
1071	if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
1072	ret = new_pes_packet(pes, ts->pkt);
1073	if (ret < 0)
1074	return ret;
1075	ts->stop_parse = 1;
1076	} else {
1077	reset_pes_packet_state(pes);
1078	}
1079	pes->state = MPEGTS_HEADER;
1080	pes->ts_packet_pos = pos;
1081	}
1082	p = buf;
1083	while (buf_size > 0) {
1084	switch (pes->state) {
1085	case MPEGTS_HEADER:
1086	len = PES_START_SIZE - pes->data_index;
1087	if (len > buf_size)
1088	len = buf_size;
1089	memcpy(pes->header + pes->data_index, p, len);
1090	pes->data_index += len;
1091	p += len;
1092	buf_size -= len;
1093	if (pes->data_index == PES_START_SIZE) {
1094	/* we got all the PES or section header. We can now
1095	* decide */
1096	if (pes->header[0] == 0x00 && pes->header[1] == 0x00 &&
1097	pes->header[2] == 0x01) {
1098	/* it must be an MPEG-2 PES stream */
1099	code = pes->header[3] | 0x100;
1100	av_log(pes->stream, AV_LOG_TRACE, "pid=%x pes_code=%#x\n", pes->pid,
1101	code);
1102	pes->stream_id = pes->header[3];
1103
1104	if ((pes->st && pes->st->discard == AVDISCARD_ALL &&
1105	(!pes->sub_st ||
1106	pes->sub_st->discard == AVDISCARD_ALL)) ||
1107	code == 0x1be) /* padding_stream */
1108	goto skip;
1109
1110	/* stream not present in PMT */
1111	if (!pes->st) {
1112	if (ts->skip_changes)
1113	goto skip;
1114
1115	pes->st = avformat_new_stream(ts->stream, NULL);
1116	if (!pes->st)
1117	return AVERROR(ENOMEM);
1118	pes->st->id = pes->pid;
1119	mpegts_set_stream_info(pes->st, pes, 0, 0);
1120	}
1121
1122	pes->total_size = AV_RB16(pes->header + 4);
1123	/* NOTE: a zero total size means the PES size is
1124	* unbounded */
1125	if (!pes->total_size)
1126	pes->total_size = MAX_PES_PAYLOAD;
1127
1128	/* allocate pes buffer */
1129	pes->buffer = av_buffer_alloc(pes->total_size +
1130	AV_INPUT_BUFFER_PADDING_SIZE);
1131	if (!pes->buffer)
1132	return AVERROR(ENOMEM);
1133
1134	if (code != 0x1bc && code != 0x1bf && /* program_stream_map, private_stream_2 */
1135	code != 0x1f0 && code != 0x1f1 && /* ECM, EMM */
1136	code != 0x1ff && code != 0x1f2 && /* program_stream_directory, DSMCC_stream */
1137	code != 0x1f8) { /* ITU-T Rec. H.222.1 type E stream */
1138	pes->state = MPEGTS_PESHEADER;
1139	if (pes->st->codecpar->codec_id == AV_CODEC_ID_NONE && !pes->st->request_probe) {
1140	av_log(pes->stream, AV_LOG_TRACE,
1141	"pid=%x stream_type=%x probing\n",
1142	pes->pid,
1143	pes->stream_type);
1144	pes->st->request_probe = 1;
1145	}
1146	} else {
1147	pes->pes_header_size = 6;
1148	pes->state = MPEGTS_PAYLOAD;
1149	pes->data_index = 0;
1150	}
1151	} else {
1152	/* otherwise, it should be a table */
1153	/* skip packet */
1154	skip:
1155	pes->state = MPEGTS_SKIP;
1156	continue;
1157	}
1158	}
1159	break;
1160	/**********************************************/
1161	/* PES packing parsing */
1162	case MPEGTS_PESHEADER:
1163	len = PES_HEADER_SIZE - pes->data_index;
1164	if (len < 0)
1165	return AVERROR_INVALIDDATA;
1166	if (len > buf_size)
1167	len = buf_size;
1168	memcpy(pes->header + pes->data_index, p, len);
1169	pes->data_index += len;
1170	p += len;
1171	buf_size -= len;
1172	if (pes->data_index == PES_HEADER_SIZE) {
1173	pes->pes_header_size = pes->header[8] + 9;
1174	pes->state = MPEGTS_PESHEADER_FILL;
1175	}
1176	break;
1177	case MPEGTS_PESHEADER_FILL:
1178	len = pes->pes_header_size - pes->data_index;
1179	if (len < 0)
1180	return AVERROR_INVALIDDATA;
1181	if (len > buf_size)
1182	len = buf_size;
1183	memcpy(pes->header + pes->data_index, p, len);
1184	pes->data_index += len;
1185	p += len;
1186	buf_size -= len;
1187	if (pes->data_index == pes->pes_header_size) {
1188	const uint8_t *r;
1189	unsigned int flags, pes_ext, skip;
1190
1191	flags = pes->header[7];
1192	r = pes->header + 9;
1193	pes->pts = AV_NOPTS_VALUE;
1194	pes->dts = AV_NOPTS_VALUE;
1195	if ((flags & 0xc0) == 0x80) {
1196	pes->dts = pes->pts = ff_parse_pes_pts(r);
1197	r += 5;
1198	} else if ((flags & 0xc0) == 0xc0) {
1199	pes->pts = ff_parse_pes_pts(r);
1200	r += 5;
1201	pes->dts = ff_parse_pes_pts(r);
1202	r += 5;
1203	}
1204	pes->extended_stream_id = -1;
1205	if (flags & 0x01) { /* PES extension */
1206	pes_ext = *r++;
1207	/* Skip PES private data, program packet sequence counter and P-STD buffer */
1208	skip = (pes_ext >> 4) & 0xb;
1209	skip += skip & 0x9;
1210	r += skip;
1211	if ((pes_ext & 0x41) == 0x01 &&
1212	(r + 2) <= (pes->header + pes->pes_header_size)) {
1213	/* PES extension 2 */
1214	if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
1215	pes->extended_stream_id = r[1];
1216	}
1217	}
1218
1219	/* we got the full header. We parse it and get the payload */
1220	pes->state = MPEGTS_PAYLOAD;
1221	pes->data_index = 0;
1222	if (pes->stream_type == 0x12 && buf_size > 0) {
1223	int sl_header_bytes = read_sl_header(pes, &pes->sl, p,
1224	buf_size);
1225	pes->pes_header_size += sl_header_bytes;
1226	p += sl_header_bytes;
1227	buf_size -= sl_header_bytes;
1228	}
1229	if (pes->stream_type == 0x15 && buf_size >= 5) {
1230	/* skip metadata access unit header */
1231	pes->pes_header_size += 5;
1232	p += 5;
1233	buf_size -= 5;
1234	}
1235	if ( pes->ts->fix_teletext_pts
1236	&& ( pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT
1237	|| pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
1238	) {
1239	AVProgram *p = NULL;
1240	while ((p = av_find_program_from_stream(pes->stream, p, pes->st->index))) {
1241	if (p->pcr_pid != -1 && p->discard != AVDISCARD_ALL) {
1242	MpegTSFilter *f = pes->ts->pids[p->pcr_pid];
1243	if (f) {
1244	AVStream *st = NULL;
1245	if (f->type == MPEGTS_PES) {
1246	PESContext *pcrpes = f->u.pes_filter.opaque;
1247	if (pcrpes)
1248	st = pcrpes->st;
1249	} else if (f->type == MPEGTS_PCR) {
1250	int i;
1251	for (i = 0; i < p->nb_stream_indexes; i++) {
1252	AVStream *pst = pes->stream->streams[p->stream_index[i]];
1253	if (pst->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1254	st = pst;
1255	}
1256	}
1257	if (f->last_pcr != -1 && st && st->discard != AVDISCARD_ALL) {
1258	// teletext packets do not always have correct timestamps,
1259	// the standard says they should be handled after 40.6 ms at most,
1260	// and the pcr error to this packet should be no more than 100 ms.
1261	// TODO: we should interpolate the PCR, not just use the last one
1262	int64_t pcr = f->last_pcr / 300;
1263	pes->st->pts_wrap_reference = st->pts_wrap_reference;
1264	pes->st->pts_wrap_behavior = st->pts_wrap_behavior;
1265	if (pes->dts == AV_NOPTS_VALUE || pes->dts < pcr) {
1266	pes->pts = pes->dts = pcr;
1267	} else if (pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT &&
1268	pes->dts > pcr + 3654 + 9000) {
1269	pes->pts = pes->dts = pcr + 3654 + 9000;
1270	} else if (pes->st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
1271	pes->dts > pcr + 10*90000) { //10sec
1272	pes->pts = pes->dts = pcr + 3654 + 9000;
1273	}
1274	break;
1275	}
1276	}
1277	}
1278	}
1279	}
1280	}
1281	break;
1282	case MPEGTS_PAYLOAD:
1283	if (pes->buffer) {
1284	if (pes->data_index > 0 &&
1285	pes->data_index + buf_size > pes->total_size) {
1286	ret = new_pes_packet(pes, ts->pkt);
1287	if (ret < 0)
1288	return ret;
1289	pes->total_size = MAX_PES_PAYLOAD;
1290	pes->buffer = av_buffer_alloc(pes->total_size +
1291	AV_INPUT_BUFFER_PADDING_SIZE);
1292	if (!pes->buffer)
1293	return AVERROR(ENOMEM);
1294	ts->stop_parse = 1;
1295	} else if (pes->data_index == 0 &&
1296	buf_size > pes->total_size) {
1297	// pes packet size is < ts size packet and pes data is padded with 0xff
1298	// not sure if this is legal in ts but see issue #2392
1299	buf_size = pes->total_size;
1300	}
1301	memcpy(pes->buffer->data + pes->data_index, p, buf_size);
1302	pes->data_index += buf_size;
1303	/* emit complete packets with known packet size
1304	* decreases demuxer delay for infrequent packets like subtitles from
1305	* a couple of seconds to milliseconds for properly muxed files.
1306	* total_size is the number of bytes following pes_packet_length
1307	* in the pes header, i.e. not counting the first PES_START_SIZE bytes */
1308	if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD &&
1309	pes->pes_header_size + pes->data_index == pes->total_size + PES_START_SIZE) {
1310	ts->stop_parse = 1;
1311	ret = new_pes_packet(pes, ts->pkt);
1312	if (ret < 0)
1313	return ret;
1314	}
1315	}
1316	buf_size = 0;
1317	break;
1318	case MPEGTS_SKIP:
1319	buf_size = 0;
1320	break;
1321	}
1322	}
1323
1324	return 0;
1325	}
1326
1327	static PESContext *add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid)
1328	{
1329	MpegTSFilter *tss;
1330	PESContext *pes;
1331
1332	/* if no pid found, then add a pid context */
1333	pes = av_mallocz(sizeof(PESContext));
1334	if (!pes)
1335	return 0;
1336	pes->ts = ts;
1337	pes->stream = ts->stream;
1338	pes->pid = pid;
1339	pes->pcr_pid = pcr_pid;
1340	pes->state = MPEGTS_SKIP;
1341	pes->pts = AV_NOPTS_VALUE;
1342	pes->dts = AV_NOPTS_VALUE;
1343	tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes);
1344	if (!tss) {
1345	av_free(pes);
1346	return 0;
1347	}
1348	return pes;
1349	}
1350
1351	#define MAX_LEVEL 4
1352	typedef struct MP4DescrParseContext {
1353	AVFormatContext *s;
1354	AVIOContext pb;
1355	Mp4Descr *descr;
1356	Mp4Descr *active_descr;
1357	int descr_count;
1358	int max_descr_count;
1359	int level;
1360	int predefined_SLConfigDescriptor_seen;
1361	} MP4DescrParseContext;
1362
1363	static int init_MP4DescrParseContext(MP4DescrParseContext *d, AVFormatContext *s,
1364	const uint8_t *buf, unsigned size,
1365	Mp4Descr *descr, int max_descr_count)
1366	{
1367	int ret;
1368	if (size > (1 << 30))
1369	return AVERROR_INVALIDDATA;
1370
1371	if ((ret = ffio_init_context(&d->pb, (unsigned char *)buf, size, 0,
1372	NULL, NULL, NULL, NULL)) < 0)
1373	return ret;
1374
1375	d->s = s;
1376	d->level = 0;
1377	d->descr_count = 0;
1378	d->descr = descr;
1379	d->active_descr = NULL;
1380	d->max_descr_count = max_descr_count;
1381
1382	return 0;
1383	}
1384
1385	static void update_offsets(AVIOContext *pb, int64_t *off, int *len)
1386	{
1387	int64_t new_off = avio_tell(pb);
1388	(*len) -= new_off - *off;
1389	*off = new_off;
1390	}
1391
1392	static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
1393	int target_tag);
1394
1395	static int parse_mp4_descr_arr(MP4DescrParseContext *d, int64_t off, int len)
1396	{
1397	while (len > 0) {
1398	int ret = parse_mp4_descr(d, off, len, 0);
1399	if (ret < 0)
1400	return ret;
1401	update_offsets(&d->pb, &off, &len);
1402	}
1403	return 0;
1404	}
1405
1406	static int parse_MP4IODescrTag(MP4DescrParseContext *d, int64_t off, int len)
1407	{
1408	avio_rb16(&d->pb); // ID
1409	avio_r8(&d->pb);
1410	avio_r8(&d->pb);
1411	avio_r8(&d->pb);
1412	avio_r8(&d->pb);
1413	avio_r8(&d->pb);
1414	update_offsets(&d->pb, &off, &len);
1415	return parse_mp4_descr_arr(d, off, len);
1416	}
1417
1418	static int parse_MP4ODescrTag(MP4DescrParseContext *d, int64_t off, int len)
1419	{
1420	int id_flags;
1421	if (len < 2)
1422	return 0;
1423	id_flags = avio_rb16(&d->pb);
1424	if (!(id_flags & 0x0020)) { // URL_Flag
1425	update_offsets(&d->pb, &off, &len);
1426	return parse_mp4_descr_arr(d, off, len); // ES_Descriptor[]
1427	} else {
1428	return 0;
1429	}
1430	}
1431
1432	static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len)
1433	{
1434	int es_id = 0;
1435	int ret = 0;
1436
1437	if (d->descr_count >= d->max_descr_count)
1438	return AVERROR_INVALIDDATA;
1439	ff_mp4_parse_es_descr(&d->pb, &es_id);
1440	d->active_descr = d->descr + (d->descr_count++);
1441
1442	d->active_descr->es_id = es_id;
1443	update_offsets(&d->pb, &off, &len);
1444	if ((ret = parse_mp4_descr(d, off, len, MP4DecConfigDescrTag)) < 0)
1445	return ret;
1446	update_offsets(&d->pb, &off, &len);
1447	if (len > 0)
1448	ret = parse_mp4_descr(d, off, len, MP4SLDescrTag);
1449	d->active_descr = NULL;
1450	return ret;
1451	}
1452
1453	static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off,
1454	int len)
1455	{
1456	Mp4Descr *descr = d->active_descr;
1457	if (!descr)
1458	return AVERROR_INVALIDDATA;
1459	d->active_descr->dec_config_descr = av_malloc(len);
1460	if (!descr->dec_config_descr)
1461	return AVERROR(ENOMEM);
1462	descr->dec_config_descr_len = len;
1463	avio_read(&d->pb, descr->dec_config_descr, len);
1464	return 0;
1465	}
1466
1467	static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len)
1468	{
1469	Mp4Descr *descr = d->active_descr;
1470	int predefined;
1471	if (!descr)
1472	return AVERROR_INVALIDDATA;
1473
1474	#define R8_CHECK_CLIP_MAX(dst, maxv) do { \
1475	descr->sl.dst = avio_r8(&d->pb); \
1476	if (descr->sl.dst > maxv) { \
1477	descr->sl.dst = maxv; \
1478	return AVERROR_INVALIDDATA; \
1479	} \
1480	} while (0)
1481
1482	predefined = avio_r8(&d->pb);
1483	if (!predefined) {
1484	int lengths;
1485	int flags = avio_r8(&d->pb);
1486	descr->sl.use_au_start = !!(flags & 0x80);
1487	descr->sl.use_au_end = !!(flags & 0x40);
1488	descr->sl.use_rand_acc_pt = !!(flags & 0x20);
1489	descr->sl.use_padding = !!(flags & 0x08);
1490	descr->sl.use_timestamps = !!(flags & 0x04);
1491	descr->sl.use_idle = !!(flags & 0x02);
1492	descr->sl.timestamp_res = avio_rb32(&d->pb);
1493	avio_rb32(&d->pb);
1494	R8_CHECK_CLIP_MAX(timestamp_len, 63);
1495	R8_CHECK_CLIP_MAX(ocr_len, 63);
1496	R8_CHECK_CLIP_MAX(au_len, 31);
1497	descr->sl.inst_bitrate_len = avio_r8(&d->pb);
1498	lengths = avio_rb16(&d->pb);
1499	descr->sl.degr_prior_len = lengths >> 12;
1500	descr->sl.au_seq_num_len = (lengths >> 7) & 0x1f;
1501	descr->sl.packet_seq_num_len = (lengths >> 2) & 0x1f;
1502	} else if (!d->predefined_SLConfigDescriptor_seen){
1503	avpriv_report_missing_feature(d->s, "Predefined SLConfigDescriptor");
1504	d->predefined_SLConfigDescriptor_seen = 1;
1505	}
1506	return 0;
1507	}
1508
1509	static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
1510	int target_tag)
1511	{
1512	int tag;
1513	int len1 = ff_mp4_read_descr(d->s, &d->pb, &tag);
1514	int ret = 0;
1515
1516	update_offsets(&d->pb, &off, &len);
1517	if (len < 0 || len1 > len || len1 <= 0) {
1518	av_log(d->s, AV_LOG_ERROR,
1519	"Tag %x length violation new length %d bytes remaining %d\n",
1520	tag, len1, len);
1521	return AVERROR_INVALIDDATA;
1522	}
1523
1524	if (d->level++ >= MAX_LEVEL) {
1525	av_log(d->s, AV_LOG_ERROR, "Maximum MP4 descriptor level exceeded\n");
1526	ret = AVERROR_INVALIDDATA;
1527	goto done;
1528	}
1529
1530	if (target_tag && tag != target_tag) {
1531	av_log(d->s, AV_LOG_ERROR, "Found tag %x expected %x\n", tag,
1532	target_tag);
1533	ret = AVERROR_INVALIDDATA;
1534	goto done;
1535	}
1536
1537	switch (tag) {
1538	case MP4IODescrTag:
1539	ret = parse_MP4IODescrTag(d, off, len1);
1540	break;
1541	case MP4ODescrTag:
1542	ret = parse_MP4ODescrTag(d, off, len1);
1543	break;
1544	case MP4ESDescrTag:
1545	ret = parse_MP4ESDescrTag(d, off, len1);
1546	break;
1547	case MP4DecConfigDescrTag:
1548	ret = parse_MP4DecConfigDescrTag(d, off, len1);
1549	break;
1550	case MP4SLDescrTag:
1551	ret = parse_MP4SLDescrTag(d, off, len1);
1552	break;
1553	}
1554
1555
1556	done:
1557	d->level--;
1558	avio_seek(&d->pb, off + len1, SEEK_SET);
1559	return ret;
1560	}
1561
1562	static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size,
1563	Mp4Descr *descr, int *descr_count, int max_descr_count)
1564	{
1565	MP4DescrParseContext d;
1566	int ret;
1567
1568	ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count);
1569	if (ret < 0)
1570	return ret;
1571
1572	ret = parse_mp4_descr(&d, avio_tell(&d.pb), size, MP4IODescrTag);
1573
1574	*descr_count = d.descr_count;
1575	return ret;
1576	}
1577
1578	static int mp4_read_od(AVFormatContext *s, const uint8_t *buf, unsigned size,
1579	Mp4Descr *descr, int *descr_count, int max_descr_count)
1580	{
1581	MP4DescrParseContext d;
1582	int ret;
1583
1584	ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count);
1585	if (ret < 0)
1586	return ret;
1587
1588	ret = parse_mp4_descr_arr(&d, avio_tell(&d.pb), size);
1589
1590	*descr_count = d.descr_count;
1591	return ret;
1592	}
1593
1594	static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section,
1595	int section_len)
1596	{
1597	MpegTSContext *ts = filter->u.section_filter.opaque;
1598	MpegTSSectionFilter *tssf = &filter->u.section_filter;
1599	SectionHeader h;
1600	const uint8_t *p, *p_end;
1601	AVIOContext pb;
1602	int mp4_descr_count = 0;
1603	Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } };
1604	int i, pid;
1605	AVFormatContext *s = ts->stream;
1606
1607	p_end = section + section_len - 4;
1608	p = section;
1609	if (parse_section_header(&h, &p, p_end) < 0)
1610	return;
1611	if (h.tid != M4OD_TID)
1612	return;
1613	if (skip_identical(&h, tssf))
1614	return;
1615
1616	mp4_read_od(s, p, (unsigned) (p_end - p), mp4_descr, &mp4_descr_count,
1617	MAX_MP4_DESCR_COUNT);
1618
1619	for (pid = 0; pid < NB_PID_MAX; pid++) {
1620	if (!ts->pids[pid])
1621	continue;
1622	for (i = 0; i < mp4_descr_count; i++) {
1623	PESContext *pes;
1624	AVStream *st;
1625	if (ts->pids[pid]->es_id != mp4_descr[i].es_id)
1626	continue;
1627	if (ts->pids[pid]->type != MPEGTS_PES) {
1628	av_log(s, AV_LOG_ERROR, "pid %x is not PES\n", pid);
1629	continue;
1630	}
1631	pes = ts->pids[pid]->u.pes_filter.opaque;
1632	st = pes->st;
1633	if (!st)
1634	continue;
1635
1636	pes->sl = mp4_descr[i].sl;
1637
1638	ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
1639	mp4_descr[i].dec_config_descr_len, 0,
1640	NULL, NULL, NULL, NULL);
1641	ff_mp4_read_dec_config_descr(s, st, &pb);
1642	if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1643	st->codecpar->extradata_size > 0)
1644	st->need_parsing = 0;
1645	if (st->codecpar->codec_id == AV_CODEC_ID_H264 &&
1646	st->codecpar->extradata_size > 0)
1647	st->need_parsing = 0;
1648
1649	st->codecpar->codec_type = avcodec_get_type(st->codecpar->codec_id);
1650	st->internal->need_context_update = 1;
1651	}
1652	}
1653	for (i = 0; i < mp4_descr_count; i++)
1654	av_free(mp4_descr[i].dec_config_descr);
1655	}
1656
1657	static void scte_data_cb(MpegTSFilter *filter, const uint8_t *section,
1658	int section_len)
1659	{
1660	AVProgram *prg = NULL;
1661	MpegTSContext *ts = filter->u.section_filter.opaque;
1662
1663	int idx = ff_find_stream_index(ts->stream, filter->pid);
1664	if (idx < 0)
1665	return;
1666
1667	new_data_packet(section, section_len, ts->pkt);
1668	ts->pkt->stream_index = idx;
1669	prg = av_find_program_from_stream(ts->stream, NULL, idx);
1670	if (prg && prg->pcr_pid != -1 && prg->discard != AVDISCARD_ALL) {
1671	MpegTSFilter *f = ts->pids[prg->pcr_pid];
1672	if (f && f->last_pcr != -1)
1673	ts->pkt->pts = ts->pkt->dts = f->last_pcr/300;
1674	}
1675	ts->stop_parse = 1;
1676
1677	}
1678
1679	static const uint8_t opus_coupled_stream_cnt[9] = {
1680	1, 0, 1, 1, 2, 2, 2, 3, 3
1681	};
1682
1683	static const uint8_t opus_stream_cnt[9] = {
1684	1, 1, 1, 2, 2, 3, 4, 4, 5,
1685	};
1686
1687	static const uint8_t opus_channel_map[8][8] = {
1688	{ 0 },
1689	{ 0,1 },
1690	{ 0,2,1 },
1691	{ 0,1,2,3 },
1692	{ 0,4,1,2,3 },
1693	{ 0,4,1,2,3,5 },
1694	{ 0,4,1,2,3,5,6 },
1695	{ 0,6,1,2,3,4,5,7 },
1696	};
1697
1698	int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type,
1699	const uint8_t **pp, const uint8_t *desc_list_end,
1700	Mp4Descr *mp4_descr, int mp4_descr_count, int pid,
1701	MpegTSContext *ts)
1702	{
1703	const uint8_t *desc_end;
1704	int desc_len, desc_tag, desc_es_id, ext_desc_tag, channels, channel_config_code;
1705	char language[252];
1706	int i;
1707
1708	desc_tag = get8(pp, desc_list_end);
1709	if (desc_tag < 0)
1710	return AVERROR_INVALIDDATA;
1711	desc_len = get8(pp, desc_list_end);
1712	if (desc_len < 0)
1713	return AVERROR_INVALIDDATA;
1714	desc_end = *pp + desc_len;
1715	if (desc_end > desc_list_end)
1716	return AVERROR_INVALIDDATA;
1717
1718	av_log(fc, AV_LOG_TRACE, "tag: 0x%02x len=%d\n", desc_tag, desc_len);
1719
1720	if ((st->codecpar->codec_id == AV_CODEC_ID_NONE || st->request_probe > 0) &&
1721	stream_type == STREAM_TYPE_PRIVATE_DATA)
1722	mpegts_find_stream_type(st, desc_tag, DESC_types);
1723
1724	switch (desc_tag) {
1725	case 0x1E: /* SL descriptor */
1726	desc_es_id = get16(pp, desc_end);
1727	if (desc_es_id < 0)
1728	break;
1729	if (ts && ts->pids[pid])
1730	ts->pids[pid]->es_id = desc_es_id;
1731	for (i = 0; i < mp4_descr_count; i++)
1732	if (mp4_descr[i].dec_config_descr_len &&
1733	mp4_descr[i].es_id == desc_es_id) {
1734	AVIOContext pb;
1735	ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
1736	mp4_descr[i].dec_config_descr_len, 0,
1737	NULL, NULL, NULL, NULL);
1738	ff_mp4_read_dec_config_descr(fc, st, &pb);
1739	if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1740	st->codecpar->extradata_size > 0) {
1741	st->need_parsing = 0;
1742	st->internal->need_context_update = 1;
1743	}
1744	if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4SYSTEMS)
1745	mpegts_open_section_filter(ts, pid, m4sl_cb, ts, 1);
1746	}
1747	break;
1748	case 0x1F: /* FMC descriptor */
1749	if (get16(pp, desc_end) < 0)
1750	break;
1751	if (mp4_descr_count > 0 &&
1752	(st->codecpar->codec_id == AV_CODEC_ID_AAC_LATM ||
1753	(st->request_probe == 0 && st->codecpar->codec_id == AV_CODEC_ID_NONE) ||
1754	st->request_probe > 0) &&
1755	mp4_descr->dec_config_descr_len && mp4_descr->es_id == pid) {
1756	AVIOContext pb;
1757	ffio_init_context(&pb, mp4_descr->dec_config_descr,
1758	mp4_descr->dec_config_descr_len, 0,
1759	NULL, NULL, NULL, NULL);
1760	ff_mp4_read_dec_config_descr(fc, st, &pb);
1761	if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1762	st->codecpar->extradata_size > 0) {
1763	st->request_probe = st->need_parsing = 0;
1764	st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
1765	st->internal->need_context_update = 1;
1766	}
1767	}
1768	break;
1769	case 0x56: /* DVB teletext descriptor */
1770	{
1771	uint8_t *extradata = NULL;
1772	int language_count = desc_len / 5;
1773
1774	if (desc_len > 0 && desc_len % 5 != 0)
1775	return AVERROR_INVALIDDATA;
1776
1777	if (language_count > 0) {
1778	/* 4 bytes per language code (3 bytes) with comma or NUL byte should fit language buffer */
1779	av_assert0(language_count <= sizeof(language) / 4);
1780
1781	if (st->codecpar->extradata == NULL) {
1782	if (ff_alloc_extradata(st->codecpar, language_count * 2)) {
1783	return AVERROR(ENOMEM);
1784	}
1785	}
1786
1787	if (st->codecpar->extradata_size < language_count * 2)
1788	return AVERROR_INVALIDDATA;
1789
1790	extradata = st->codecpar->extradata;
1791
1792	for (i = 0; i < language_count; i++) {
1793	language[i * 4 + 0] = get8(pp, desc_end);
1794	language[i * 4 + 1] = get8(pp, desc_end);
1795	language[i * 4 + 2] = get8(pp, desc_end);
1796	language[i * 4 + 3] = ',';
1797
1798	memcpy(extradata, *pp, 2);
1799	extradata += 2;
1800
1801	*pp += 2;
1802	}
1803
1804	language[i * 4 - 1] = 0;
1805	av_dict_set(&st->metadata, "language", language, 0);
1806	st->internal->need_context_update = 1;
1807	}
1808	}
1809	break;
1810	case 0x59: /* subtitling descriptor */
1811	{
1812	/* 8 bytes per DVB subtitle substream data:
1813	* ISO_639_language_code (3 bytes),
1814	* subtitling_type (1 byte),
1815	* composition_page_id (2 bytes),
1816	* ancillary_page_id (2 bytes) */
1817	int language_count = desc_len / 8;
1818
1819	if (desc_len > 0 && desc_len % 8 != 0)
1820	return AVERROR_INVALIDDATA;
1821
1822	if (language_count > 1) {
1823	avpriv_request_sample(fc, "DVB subtitles with multiple languages");
1824	}
1825
1826	if (language_count > 0) {
1827	uint8_t *extradata;
1828
1829	/* 4 bytes per language code (3 bytes) with comma or NUL byte should fit language buffer */
1830	av_assert0(language_count <= sizeof(language) / 4);
1831
1832	if (st->codecpar->extradata == NULL) {
1833	if (ff_alloc_extradata(st->codecpar, language_count * 5)) {
1834	return AVERROR(ENOMEM);
1835	}
1836	}
1837
1838	if (st->codecpar->extradata_size < language_count * 5)
1839	return AVERROR_INVALIDDATA;
1840
1841	extradata = st->codecpar->extradata;
1842
1843	for (i = 0; i < language_count; i++) {
1844	language[i * 4 + 0] = get8(pp, desc_end);
1845	language[i * 4 + 1] = get8(pp, desc_end);
1846	language[i * 4 + 2] = get8(pp, desc_end);
1847	language[i * 4 + 3] = ',';
1848
1849	/* hearing impaired subtitles detection using subtitling_type */
1850	switch (*pp[0]) {
1851	case 0x20: /* DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality */
1852	case 0x21: /* DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor */
1853	case 0x22: /* DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor */
1854	case 0x23: /* DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor */
1855	case 0x24: /* DVB subtitles (for the hard of hearing) for display on a high definition monitor */
1856	case 0x25: /* DVB subtitles (for the hard of hearing) with plano-stereoscopic disparity for display on a high definition monitor */
1857	st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
1858	break;
1859	}
1860
1861	extradata[4] = get8(pp, desc_end); /* subtitling_type */
1862	memcpy(extradata, *pp, 4); /* composition_page_id and ancillary_page_id */
1863	extradata += 5;
1864
1865	*pp += 4;
1866	}
1867
1868	language[i * 4 - 1] = 0;
1869	av_dict_set(&st->metadata, "language", language, 0);
1870	st->internal->need_context_update = 1;
1871	}
1872	}
1873	break;
1874	case 0x0a: /* ISO 639 language descriptor */
1875	for (i = 0; i + 4 <= desc_len; i += 4) {
1876	language[i + 0] = get8(pp, desc_end);
1877	language[i + 1] = get8(pp, desc_end);
1878	language[i + 2] = get8(pp, desc_end);
1879	language[i + 3] = ',';
1880	switch (get8(pp, desc_end)) {
1881	case 0x01:
1882	st->disposition |= AV_DISPOSITION_CLEAN_EFFECTS;
1883	break;
1884	case 0x02:
1885	st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
1886	break;
1887	case 0x03:
1888	st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
1889	break;
1890	}
1891	}
1892	if (i && language[0]) {
1893	language[i - 1] = 0;
1894	av_dict_set(&st->metadata, "language", language, 0);
1895	}
1896	break;
1897	case 0x05: /* registration descriptor */
1898	st->codecpar->codec_tag = bytestream_get_le32(pp);
1899	av_log(fc, AV_LOG_TRACE, "reg_desc=%.4s\n", (char *)&st->codecpar->codec_tag);
1900	if (st->codecpar->codec_id == AV_CODEC_ID_NONE || st->request_probe > 0) {
1901	mpegts_find_stream_type(st, st->codecpar->codec_tag, REGD_types);
1902	if (st->codecpar->codec_tag == MKTAG('B', 'S', 'S', 'D'))
1903	st->request_probe = 50;
1904	}
1905	break;
1906	case 0x52: /* stream identifier descriptor */
1907	st->stream_identifier = 1 + get8(pp, desc_end);
1908	break;
1909	case 0x26: /* metadata descriptor */
1910	if (get16(pp, desc_end) == 0xFFFF)
1911	*pp += 4;
1912	if (get8(pp, desc_end) == 0xFF) {
1913	st->codecpar->codec_tag = bytestream_get_le32(pp);
1914	if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
1915	mpegts_find_stream_type(st, st->codecpar->codec_tag, METADATA_types);
1916	}
1917	break;
1918	case 0x7f: /* DVB extension descriptor */
1919	ext_desc_tag = get8(pp, desc_end);
1920	if (ext_desc_tag < 0)
1921	return AVERROR_INVALIDDATA;
1922	if (st->codecpar->codec_id == AV_CODEC_ID_OPUS &&
1923	ext_desc_tag == 0x80) { /* User defined (provisional Opus) */
1924	if (!st->codecpar->extradata) {
1925	st->codecpar->extradata = av_mallocz(sizeof(opus_default_extradata) +
1926	AV_INPUT_BUFFER_PADDING_SIZE);
1927	if (!st->codecpar->extradata)
1928	return AVERROR(ENOMEM);
1929
1930	st->codecpar->extradata_size = sizeof(opus_default_extradata);
1931	memcpy(st->codecpar->extradata, opus_default_extradata, sizeof(opus_default_extradata));
1932
1933	channel_config_code = get8(pp, desc_end);
1934	if (channel_config_code < 0)
1935	return AVERROR_INVALIDDATA;
1936	if (channel_config_code <= 0x8) {
1937	st->codecpar->extradata[9] = channels = channel_config_code ? channel_config_code : 2;
1938	st->codecpar->extradata[18] = channel_config_code ? (channels > 2) : /* Dual Mono */ 255;
1939	st->codecpar->extradata[19] = opus_stream_cnt[channel_config_code];
1940	st->codecpar->extradata[20] = opus_coupled_stream_cnt[channel_config_code];
1941	memcpy(&st->codecpar->extradata[21], opus_channel_map[channels - 1], channels);
1942	} else {
1943	avpriv_request_sample(fc, "Opus in MPEG-TS - channel_config_code > 0x8");
1944	}
1945	st->need_parsing = AVSTREAM_PARSE_FULL;
1946	st->internal->need_context_update = 1;
1947	}
1948	}
1949	break;
1950	default:
1951	break;
1952	}
1953	*pp = desc_end;
1954	return 0;
1955	}
1956
1957	static int is_pes_stream(int stream_type, uint32_t prog_reg_desc)
1958	{
1959	return !(stream_type == 0x13 ||
1960	(stream_type == 0x86 && prog_reg_desc == AV_RL32("CUEI")) );
1961	}
1962
1963	static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
1964	{
1965	MpegTSContext *ts = filter->u.section_filter.opaque;
1966	MpegTSSectionFilter *tssf = &filter->u.section_filter;
1967	SectionHeader h1, *h = &h1;
1968	PESContext *pes;
1969	AVStream *st;
1970	const uint8_t *p, *p_end, *desc_list_end;
1971	int program_info_length, pcr_pid, pid, stream_type;
1972	int desc_list_len;
1973	uint32_t prog_reg_desc = 0; /* registration descriptor */
1974
1975	int mp4_descr_count = 0;
1976	Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } };
1977	int i;
1978
1979	av_log(ts->stream, AV_LOG_TRACE, "PMT: len %i\n", section_len);
1980	hex_dump_debug(ts->stream, section, section_len);
1981
1982	p_end = section + section_len - 4;
1983	p = section;
1984	if (parse_section_header(h, &p, p_end) < 0)
1985	return;
1986	if (skip_identical(h, tssf))
1987	return;
1988
1989	av_log(ts->stream, AV_LOG_TRACE, "sid=0x%x sec_num=%d/%d version=%d tid=%d\n",
1990	h->id, h->sec_num, h->last_sec_num, h->version, h->tid);
1991
1992	if (h->tid != PMT_TID)
1993	return;
1994	if (!ts->scan_all_pmts && ts->skip_changes)
1995	return;
1996
1997	if (!ts->skip_clear)
1998	clear_program(ts, h->id);
1999
2000	pcr_pid = get16(&p, p_end);
2001	if (pcr_pid < 0)
2002	return;
2003	pcr_pid &= 0x1fff;
2004	add_pid_to_pmt(ts, h->id, pcr_pid);
2005	set_pcr_pid(ts->stream, h->id, pcr_pid);
2006
2007	av_log(ts->stream, AV_LOG_TRACE, "pcr_pid=0x%x\n", pcr_pid);
2008
2009	program_info_length = get16(&p, p_end);
2010	if (program_info_length < 0)
2011	return;
2012	program_info_length &= 0xfff;
2013	while (program_info_length >= 2) {
2014	uint8_t tag, len;
2015	tag = get8(&p, p_end);
2016	len = get8(&p, p_end);
2017
2018	av_log(ts->stream, AV_LOG_TRACE, "program tag: 0x%02x len=%d\n", tag, len);
2019
2020	if (len > program_info_length - 2)
2021	// something else is broken, exit the program_descriptors_loop
2022	break;
2023	program_info_length -= len + 2;
2024	if (tag == 0x1d) { // IOD descriptor
2025	get8(&p, p_end); // scope
2026	get8(&p, p_end); // label
2027	len -= 2;
2028	mp4_read_iods(ts->stream, p, len, mp4_descr + mp4_descr_count,
2029	&mp4_descr_count, MAX_MP4_DESCR_COUNT);
2030	} else if (tag == 0x05 && len >= 4) { // registration descriptor
2031	prog_reg_desc = bytestream_get_le32(&p);
2032	len -= 4;
2033	}
2034	p += len;
2035	}
2036	p += program_info_length;
2037	if (p >= p_end)
2038	goto out;
2039
2040	// stop parsing after pmt, we found header
2041	if (!ts->stream->nb_streams)
2042	ts->stop_parse = 2;
2043
2044	set_pmt_found(ts, h->id);
2045
2046
2047	for (;;) {
2048	st = 0;
2049	pes = NULL;
2050	stream_type = get8(&p, p_end);
2051	if (stream_type < 0)
2052	break;
2053	pid = get16(&p, p_end);
2054	if (pid < 0)
2055	goto out;
2056	pid &= 0x1fff;
2057	if (pid == ts->current_pid)
2058	goto out;
2059
2060	/* now create stream */
2061	if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) {
2062	pes = ts->pids[pid]->u.pes_filter.opaque;
2063	if (!pes->st) {
2064	pes->st = avformat_new_stream(pes->stream, NULL);
2065	if (!pes->st)
2066	goto out;
2067	pes->st->id = pes->pid;
2068	}
2069	st = pes->st;
2070	} else if (is_pes_stream(stream_type, prog_reg_desc)) {
2071	if (ts->pids[pid])
2072	mpegts_close_filter(ts, ts->pids[pid]); // wrongly added sdt filter probably
2073	pes = add_pes_stream(ts, pid, pcr_pid);
2074	if (pes) {
2075	st = avformat_new_stream(pes->stream, NULL);
2076	if (!st)
2077	goto out;
2078	st->id = pes->pid;
2079	}
2080	} else {
2081	int idx = ff_find_stream_index(ts->stream, pid);
2082	if (idx >= 0) {
2083	st = ts->stream->streams[idx];
2084	} else {
2085	st = avformat_new_stream(ts->stream, NULL);
2086	if (!st)
2087	goto out;
2088	st->id = pid;
2089	st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2090	if (stream_type == 0x86 && prog_reg_desc == AV_RL32("CUEI")) {
2091	mpegts_find_stream_type(st, stream_type, SCTE_types);
2092	mpegts_open_section_filter(ts, pid, scte_data_cb, ts, 1);
2093	}
2094	}
2095	}
2096
2097	if (!st)
2098	goto out;
2099
2100	if (pes && !pes->stream_type)
2101	mpegts_set_stream_info(st, pes, stream_type, prog_reg_desc);
2102
2103	add_pid_to_pmt(ts, h->id, pid);
2104
2105	av_program_add_stream_index(ts->stream, h->id, st->index);
2106
2107	desc_list_len = get16(&p, p_end);
2108	if (desc_list_len < 0)
2109	goto out;
2110	desc_list_len &= 0xfff;
2111	desc_list_end = p + desc_list_len;
2112	if (desc_list_end > p_end)
2113	goto out;
2114	for (;;) {
2115	if (ff_parse_mpeg2_descriptor(ts->stream, st, stream_type, &p,
2116	desc_list_end, mp4_descr,
2117	mp4_descr_count, pid, ts) < 0)
2118	break;
2119
2120	if (pes && prog_reg_desc == AV_RL32("HDMV") &&
2121	(stream_type == 0x83 || stream_type == 0x81) && pes->sub_st) {
2122	av_program_add_stream_index(ts->stream, h->id,
2123	pes->sub_st->index);
2124	pes->sub_st->codecpar->codec_tag = st->codecpar->codec_tag;
2125	}
2126	}
2127	p = desc_list_end;
2128	}
2129
2130	if (!ts->pids[pcr_pid])
2131	mpegts_open_pcr_filter(ts, pcr_pid);
2132
2133	out:
2134	for (i = 0; i < mp4_descr_count; i++)
2135	av_free(mp4_descr[i].dec_config_descr);
2136	}
2137
2138	static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
2139	{
2140	MpegTSContext *ts = filter->u.section_filter.opaque;
2141	MpegTSSectionFilter *tssf = &filter->u.section_filter;
2142	SectionHeader h1, *h = &h1;
2143	const uint8_t *p, *p_end;
2144	int sid, pmt_pid;
2145	AVProgram *program;
2146
2147	av_log(ts->stream, AV_LOG_TRACE, "PAT:\n");
2148	hex_dump_debug(ts->stream, section, section_len);
2149
2150	p_end = section + section_len - 4;
2151	p = section;
2152	if (parse_section_header(h, &p, p_end) < 0)
2153	return;
2154	if (h->tid != PAT_TID)
2155	return;
2156	if (ts->skip_changes)
2157	return;
2158
2159	if (skip_identical(h, tssf))
2160	return;
2161	ts->stream->ts_id = h->id;
2162
2163	clear_programs(ts);
2164	for (;;) {
2165	sid = get16(&p, p_end);
2166	if (sid < 0)
2167	break;
2168	pmt_pid = get16(&p, p_end);
2169	if (pmt_pid < 0)
2170	break;
2171	pmt_pid &= 0x1fff;
2172
2173	if (pmt_pid == ts->current_pid)
2174	break;
2175
2176	av_log(ts->stream, AV_LOG_TRACE, "sid=0x%x pid=0x%x\n", sid, pmt_pid);
2177
2178	if (sid == 0x0000) {
2179	/* NIT info */
2180	} else {
2181	MpegTSFilter *fil = ts->pids[pmt_pid];
2182	program = av_new_program(ts->stream, sid);
2183	if (program) {
2184	program->program_num = sid;
2185	program->pmt_pid = pmt_pid;
2186	}
2187	if (fil)
2188	if ( fil->type != MPEGTS_SECTION
2189	|| fil->pid != pmt_pid
2190	|| fil->u.section_filter.section_cb != pmt_cb)
2191	mpegts_close_filter(ts, ts->pids[pmt_pid]);
2192
2193	if (!ts->pids[pmt_pid])
2194	mpegts_open_section_filter(ts, pmt_pid, pmt_cb, ts, 1);
2195	add_pat_entry(ts, sid);
2196	add_pid_to_pmt(ts, sid, 0); // add pat pid to program
2197	add_pid_to_pmt(ts, sid, pmt_pid);
2198	}
2199	}
2200
2201	if (sid < 0) {
2202	int i,j;
2203	for (j=0; j<ts->stream->nb_programs; j++) {
2204	for (i = 0; i < ts->nb_prg; i++)
2205	if (ts->prg[i].id == ts->stream->programs[j]->id)
2206	break;
2207	if (i==ts->nb_prg && !ts->skip_clear)
2208	clear_avprogram(ts, ts->stream->programs[j]->id);
2209	}
2210	}
2211	}
2212
2213	static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
2214	{
2215	MpegTSContext *ts = filter->u.section_filter.opaque;
2216	MpegTSSectionFilter *tssf = &filter->u.section_filter;
2217	SectionHeader h1, *h = &h1;
2218	const uint8_t *p, *p_end, *desc_list_end, *desc_end;
2219	int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
2220	char *name, *provider_name;
2221
2222	av_log(ts->stream, AV_LOG_TRACE, "SDT:\n");
2223	hex_dump_debug(ts->stream, section, section_len);
2224
2225	p_end = section + section_len - 4;
2226	p = section;
2227	if (parse_section_header(h, &p, p_end) < 0)
2228	return;
2229	if (h->tid != SDT_TID)
2230	return;
2231	if (ts->skip_changes)
2232	return;
2233	if (skip_identical(h, tssf))
2234	return;
2235
2236	onid = get16(&p, p_end);
2237	if (onid < 0)
2238	return;
2239	val = get8(&p, p_end);
2240	if (val < 0)
2241	return;
2242	for (;;) {
2243	sid = get16(&p, p_end);
2244	if (sid < 0)
2245	break;
2246	val = get8(&p, p_end);
2247	if (val < 0)
2248	break;
2249	desc_list_len = get16(&p, p_end);
2250	if (desc_list_len < 0)
2251	break;
2252	desc_list_len &= 0xfff;
2253	desc_list_end = p + desc_list_len;
2254	if (desc_list_end > p_end)
2255	break;
2256	for (;;) {
2257	desc_tag = get8(&p, desc_list_end);
2258	if (desc_tag < 0)
2259	break;
2260	desc_len = get8(&p, desc_list_end);
2261	desc_end = p + desc_len;
2262	if (desc_len < 0 || desc_end > desc_list_end)
2263	break;
2264
2265	av_log(ts->stream, AV_LOG_TRACE, "tag: 0x%02x len=%d\n",
2266	desc_tag, desc_len);
2267
2268	switch (desc_tag) {
2269	case 0x48:
2270	service_type = get8(&p, p_end);
2271	if (service_type < 0)
2272	break;
2273	provider_name = getstr8(&p, p_end);
2274	if (!provider_name)
2275	break;
2276	name = getstr8(&p, p_end);
2277	if (name) {
2278	AVProgram *program = av_new_program(ts->stream, sid);
2279	if (program) {
2280	av_dict_set(&program->metadata, "service_name", name, 0);
2281	av_dict_set(&program->metadata, "service_provider",
2282	provider_name, 0);
2283	}
2284	}
2285	av_free(name);
2286	av_free(provider_name);
2287	break;
2288	default:
2289	break;
2290	}
2291	p = desc_end;
2292	}
2293	p = desc_list_end;
2294	}
2295	}
2296
2297	static int parse_pcr(int64_t *ppcr_high, int *ppcr_low,
2298	const uint8_t *packet);
2299
2300	/* handle one TS packet */
2301	static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
2302	{
2303	MpegTSFilter *tss;
2304	int len, pid, cc, expected_cc, cc_ok, afc, is_start, is_discontinuity,
2305	has_adaptation, has_payload;
2306	const uint8_t *p, *p_end;
2307	int64_t pos;
2308
2309	pid = AV_RB16(packet + 1) & 0x1fff;
2310	if (pid && discard_pid(ts, pid))
2311	return 0;
2312	is_start = packet[1] & 0x40;
2313	tss = ts->pids[pid];
2314	if (ts->auto_guess && !tss && is_start) {
2315	add_pes_stream(ts, pid, -1);
2316	tss = ts->pids[pid];
2317	}
2318	if (!tss)
2319	return 0;
2320	ts->current_pid = pid;
2321
2322	afc = (packet[3] >> 4) & 3;
2323	if (afc == 0) /* reserved value */
2324	return 0;
2325	has_adaptation = afc & 2;
2326	has_payload = afc & 1;
2327	is_discontinuity = has_adaptation &&
2328	packet[4] != 0 && /* with length > 0 */
2329	(packet[5] & 0x80); /* and discontinuity indicated */
2330
2331	/* continuity check (currently not used) */
2332	cc = (packet[3] & 0xf);
2333	expected_cc = has_payload ? (tss->last_cc + 1) & 0x0f : tss->last_cc;
2334	cc_ok = pid == 0x1FFF || // null packet PID
2335	is_discontinuity ||
2336	tss->last_cc < 0 ||
2337	expected_cc == cc;
2338
2339	tss->last_cc = cc;
2340	if (!cc_ok) {
2341	av_log(ts->stream, AV_LOG_DEBUG,
2342	"Continuity check failed for pid %d expected %d got %d\n",
2343	pid, expected_cc, cc);
2344	if (tss->type == MPEGTS_PES) {
2345	PESContext *pc = tss->u.pes_filter.opaque;
2346	pc->flags |= AV_PKT_FLAG_CORRUPT;
2347	}
2348	}
2349
2350	p = packet + 4;
2351	if (has_adaptation) {
2352	int64_t pcr_h;
2353	int pcr_l;
2354	if (parse_pcr(&pcr_h, &pcr_l, packet) == 0)
2355	tss->last_pcr = pcr_h * 300 + pcr_l;
2356	/* skip adaptation field */
2357	p += p[0] + 1;
2358	}
2359	/* if past the end of packet, ignore */
2360	p_end = packet + TS_PACKET_SIZE;
2361	if (p >= p_end || !has_payload)
2362	return 0;
2363
2364	pos = avio_tell(ts->stream->pb);
2365	if (pos >= 0) {
2366	av_assert0(pos >= TS_PACKET_SIZE);
2367	ts->pos47_full = pos - TS_PACKET_SIZE;
2368	}
2369
2370	if (tss->type == MPEGTS_SECTION) {
2371	if (is_start) {
2372	/* pointer field present */
2373	len = *p++;
2374	if (len > p_end - p)
2375	return 0;
2376	if (len && cc_ok) {
2377	/* write remaining section bytes */
2378	write_section_data(ts, tss,
2379	p, len, 0);
2380	/* check whether filter has been closed */
2381	if (!ts->pids[pid])
2382	return 0;
2383	}
2384	p += len;
2385	if (p < p_end) {
2386	write_section_data(ts, tss,
2387	p, p_end - p, 1);
2388	}
2389	} else {
2390	if (cc_ok) {
2391	write_section_data(ts, tss,
2392	p, p_end - p, 0);
2393	}
2394	}
2395
2396	// stop find_stream_info from waiting for more streams
2397	// when all programs have received a PMT
2398	if (ts->stream->ctx_flags & AVFMTCTX_NOHEADER && ts->scan_all_pmts <= 0) {
2399	int i;
2400	for (i = 0; i < ts->nb_prg; i++) {
2401	if (!ts->prg[i].pmt_found)
2402	break;
2403	}
2404	if (i == ts->nb_prg && ts->nb_prg > 0) {
2405	int types = 0;
2406	for (i = 0; i < ts->stream->nb_streams; i++) {
2407	AVStream *st = ts->stream->streams[i];
2408	if (st->codecpar->codec_type >= 0)
2409	types |= 1<<st->codecpar->codec_type;
2410	}
2411	if ((types & (1<<AVMEDIA_TYPE_AUDIO) && types & (1<<AVMEDIA_TYPE_VIDEO)) || pos > 100000) {
2412	av_log(ts->stream, AV_LOG_DEBUG, "All programs have pmt, headers found\n");
2413	ts->stream->ctx_flags &= ~AVFMTCTX_NOHEADER;
2414	}
2415	}
2416	}
2417
2418	} else {
2419	int ret;
2420	// Note: The position here points actually behind the current packet.
2421	if (tss->type == MPEGTS_PES) {
2422	if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start,
2423	pos - ts->raw_packet_size)) < 0)
2424	return ret;
2425	}
2426	}
2427
2428	return 0;
2429	}
2430
2431	static void reanalyze(MpegTSContext *ts) {
2432	AVIOContext *pb = ts->stream->pb;
2433	int64_t pos = avio_tell(pb);
2434	if (pos < 0)
2435	return;
2436	pos -= ts->pos47_full;
2437	if (pos == TS_PACKET_SIZE) {
2438	ts->size_stat[0] ++;
2439	} else if (pos == TS_DVHS_PACKET_SIZE) {
2440	ts->size_stat[1] ++;
2441	} else if (pos == TS_FEC_PACKET_SIZE) {
2442	ts->size_stat[2] ++;
2443	}
2444
2445	ts->size_stat_count ++;
2446	if (ts->size_stat_count > SIZE_STAT_THRESHOLD) {
2447	int newsize = 0;
2448	if (ts->size_stat[0] > SIZE_STAT_THRESHOLD) {
2449	newsize = TS_PACKET_SIZE;
2450	} else if (ts->size_stat[1] > SIZE_STAT_THRESHOLD) {
2451	newsize = TS_DVHS_PACKET_SIZE;
2452	} else if (ts->size_stat[2] > SIZE_STAT_THRESHOLD) {
2453	newsize = TS_FEC_PACKET_SIZE;
2454	}
2455	if (newsize && newsize != ts->raw_packet_size) {
2456	av_log(ts->stream, AV_LOG_WARNING, "changing packet size to %d\n", newsize);
2457	ts->raw_packet_size = newsize;
2458	}
2459	ts->size_stat_count = 0;
2460	memset(ts->size_stat, 0, sizeof(ts->size_stat));
2461	}
2462	}
2463
2464	/* XXX: try to find a better synchro over several packets (use
2465	* get_packet_size() ?) */
2466	static int mpegts_resync(AVFormatContext *s, int seekback, const uint8_t *current_packet)
2467	{
2468	MpegTSContext *ts = s->priv_data;
2469	AVIOContext *pb = s->pb;
2470	int c, i;
2471	uint64_t pos = avio_tell(pb);
2472
2473	avio_seek(pb, -FFMIN(seekback, pos), SEEK_CUR);
2474
2475	//Special case for files like 01c56b0dc1.ts
2476	if (current_packet[0] == 0x80 && current_packet[12] == 0x47) {
2477	avio_seek(pb, 12, SEEK_CUR);
2478	return 0;
2479	}
2480
2481	for (i = 0; i < ts->resync_size; i++) {
2482	c = avio_r8(pb);
2483	if (avio_feof(pb))
2484	return AVERROR_EOF;
2485	if (c == 0x47) {
2486	avio_seek(pb, -1, SEEK_CUR);
2487	reanalyze(s->priv_data);
2488	return 0;
2489	}
2490	}
2491	av_log(s, AV_LOG_ERROR,
2492	"max resync size reached, could not find sync byte\n");
2493	/* no sync found */
2494	return AVERROR_INVALIDDATA;
2495	}
2496
2497	/* return AVERROR_something if error or EOF. Return 0 if OK. */
2498	static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size,
2499	const uint8_t **data)
2500	{
2501	AVIOContext *pb = s->pb;
2502	int len;
2503
2504	for (;;) {
2505	len = ffio_read_indirect(pb, buf, TS_PACKET_SIZE, data);
2506	if (len != TS_PACKET_SIZE)
2507	return len < 0 ? len : AVERROR_EOF;
2508	/* check packet sync byte */
2509	if ((*data)[0] != 0x47) {
2510	/* find a new packet start */
2511
2512	if (mpegts_resync(s, raw_packet_size, *data) < 0)
2513	return AVERROR(EAGAIN);
2514	else
2515	continue;
2516	} else {
2517	break;
2518	}
2519	}
2520	return 0;
2521	}
2522
2523	static void finished_reading_packet(AVFormatContext *s, int raw_packet_size)
2524	{
2525	AVIOContext *pb = s->pb;
2526	int skip = raw_packet_size - TS_PACKET_SIZE;
2527	if (skip > 0)
2528	avio_skip(pb, skip);
2529	}
2530
2531	static int handle_packets(MpegTSContext *ts, int64_t nb_packets)
2532	{
2533	AVFormatContext *s = ts->stream;
2534	uint8_t packet[TS_PACKET_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
2535	const uint8_t *data;
2536	int64_t packet_num;
2537	int ret = 0;
2538
2539	if (avio_tell(s->pb) != ts->last_pos) {
2540	int i;
2541	av_log(ts->stream, AV_LOG_TRACE, "Skipping after seek\n");
2542	/* seek detected, flush pes buffer */
2543	for (i = 0; i < NB_PID_MAX; i++) {
2544	if (ts->pids[i]) {
2545	if (ts->pids[i]->type == MPEGTS_PES) {
2546	PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
2547	av_buffer_unref(&pes->buffer);
2548	pes->data_index = 0;
2549	pes->state = MPEGTS_SKIP; /* skip until pes header */
2550	} else if (ts->pids[i]->type == MPEGTS_SECTION) {
2551	ts->pids[i]->u.section_filter.last_ver = -1;
2552	}
2553	ts->pids[i]->last_cc = -1;
2554	ts->pids[i]->last_pcr = -1;
2555	}
2556	}
2557	}
2558
2559	ts->stop_parse = 0;
2560	packet_num = 0;
2561	memset(packet + TS_PACKET_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);
2562	for (;;) {
2563	packet_num++;
2564	if (nb_packets != 0 && packet_num >= nb_packets ||
2565	ts->stop_parse > 1) {
2566	ret = AVERROR(EAGAIN);
2567	break;
2568	}
2569	if (ts->stop_parse > 0)
2570	break;
2571
2572	ret = read_packet(s, packet, ts->raw_packet_size, &data);
2573	if (ret != 0)
2574	break;
2575	ret = handle_packet(ts, data);
2576	finished_reading_packet(s, ts->raw_packet_size);
2577	if (ret != 0)
2578	break;
2579	}
2580	ts->last_pos = avio_tell(s->pb);
2581	return ret;
2582	}
2583
2584	static int mpegts_probe(AVProbeData *p)
2585	{
2586	const int size = p->buf_size;
2587	int maxscore = 0;
2588	int sumscore = 0;
2589	int i;
2590	int check_count = size / TS_FEC_PACKET_SIZE;
2591	#define CHECK_COUNT 10
2592	#define CHECK_BLOCK 100
2593
2594	if (!check_count)
2595	return 0;
2596
2597	for (i = 0; i<check_count; i+=CHECK_BLOCK) {
2598	int left = FFMIN(check_count - i, CHECK_BLOCK);
2599	int score = analyze(p->buf + TS_PACKET_SIZE *i, TS_PACKET_SIZE *left, TS_PACKET_SIZE , 1);
2600	int dvhs_score = analyze(p->buf + TS_DVHS_PACKET_SIZE*i, TS_DVHS_PACKET_SIZE*left, TS_DVHS_PACKET_SIZE, 1);
2601	int fec_score = analyze(p->buf + TS_FEC_PACKET_SIZE *i, TS_FEC_PACKET_SIZE *left, TS_FEC_PACKET_SIZE , 1);
2602	score = FFMAX3(score, dvhs_score, fec_score);
2603	sumscore += score;
2604	maxscore = FFMAX(maxscore, score);
2605	}
2606
2607	sumscore = sumscore * CHECK_COUNT / check_count;
2608	maxscore = maxscore * CHECK_COUNT / CHECK_BLOCK;
2609
2610	ff_dlog(0, "TS score: %d %d\n", sumscore, maxscore);
2611
2612	if (check_count > CHECK_COUNT && sumscore > 6) {
2613	return AVPROBE_SCORE_MAX + sumscore - CHECK_COUNT;
2614	} else if (check_count >= CHECK_COUNT && sumscore > 6) {
2615	return AVPROBE_SCORE_MAX/2 + sumscore - CHECK_COUNT;
2616	} else if (check_count >= CHECK_COUNT && maxscore > 6) {
2617	return AVPROBE_SCORE_MAX/2 + sumscore - CHECK_COUNT;
2618	} else if (sumscore > 6) {
2619	return 2;
2620	} else {
2621	return 0;
2622	}
2623	}
2624
2625	/* return the 90kHz PCR and the extension for the 27MHz PCR. return
2626	* (-1) if not available */
2627	static int parse_pcr(int64_t *ppcr_high, int *ppcr_low, const uint8_t *packet)
2628	{
2629	int afc, len, flags;
2630	const uint8_t *p;
2631	unsigned int v;
2632
2633	afc = (packet[3] >> 4) & 3;
2634	if (afc <= 1)
2635	return AVERROR_INVALIDDATA;
2636	p = packet + 4;
2637	len = p[0];
2638	p++;
2639	if (len == 0)
2640	return AVERROR_INVALIDDATA;
2641	flags = *p++;
2642	len--;
2643	if (!(flags & 0x10))
2644	return AVERROR_INVALIDDATA;
2645	if (len < 6)
2646	return AVERROR_INVALIDDATA;
2647	v = AV_RB32(p);
2648	*ppcr_high = ((int64_t) v << 1) | (p[4] >> 7);
2649	*ppcr_low = ((p[4] & 1) << 8) | p[5];
2650	return 0;
2651	}
2652
2653	static void seek_back(AVFormatContext *s, AVIOContext *pb, int64_t pos) {
2654
2655	/* NOTE: We attempt to seek on non-seekable files as well, as the
2656	* probe buffer usually is big enough. Only warn if the seek failed
2657	* on files where the seek should work. */
2658	if (avio_seek(pb, pos, SEEK_SET) < 0)
2659	av_log(s, (pb->seekable & AVIO_SEEKABLE_NORMAL) ? AV_LOG_ERROR : AV_LOG_INFO, "Unable to seek back to the start\n");
2660	}
2661
2662	static int mpegts_read_header(AVFormatContext *s)
2663	{
2664	MpegTSContext *ts = s->priv_data;
2665	AVIOContext *pb = s->pb;
2666	uint8_t buf[8 * 1024] = {0};
2667	int len;
2668	int64_t pos, probesize = s->probesize;
2669
2670	if (ffio_ensure_seekback(pb, probesize) < 0)
2671	av_log(s, AV_LOG_WARNING, "Failed to allocate buffers for seekback\n");
2672
2673	/* read the first 8192 bytes to get packet size */
2674	pos = avio_tell(pb);
2675	len = avio_read(pb, buf, sizeof(buf));
2676	ts->raw_packet_size = get_packet_size(buf, len);
2677	if (ts->raw_packet_size <= 0) {
2678	av_log(s, AV_LOG_WARNING, "Could not detect TS packet size, defaulting to non-FEC/DVHS\n");
2679	ts->raw_packet_size = TS_PACKET_SIZE;
2680	}
2681	ts->stream = s;
2682	ts->auto_guess = 0;
2683
2684	if (s->iformat == &ff_mpegts_demuxer) {
2685	/* normal demux */
2686
2687	/* first do a scan to get all the services */
2688	seek_back(s, pb, pos);
2689
2690	mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
2691
2692	mpegts_open_section_filter(ts, PAT_PID, pat_cb, ts, 1);
2693
2694	handle_packets(ts, probesize / ts->raw_packet_size);
2695	/* if could not find service, enable auto_guess */
2696
2697	ts->auto_guess = 1;
2698
2699	av_log(ts->stream, AV_LOG_TRACE, "tuning done\n");
2700
2701	s->ctx_flags |= AVFMTCTX_NOHEADER;
2702	} else {
2703	AVStream *st;
2704	int pcr_pid, pid, nb_packets, nb_pcrs, ret, pcr_l;
2705	int64_t pcrs[2], pcr_h;
2706	int packet_count[2];
2707	uint8_t packet[TS_PACKET_SIZE];
2708	const uint8_t *data;
2709
2710	/* only read packets */
2711
2712	st = avformat_new_stream(s, NULL);
2713	if (!st)
2714	return AVERROR(ENOMEM);
2715	avpriv_set_pts_info(st, 60, 1, 27000000);
2716	st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2717	st->codecpar->codec_id = AV_CODEC_ID_MPEG2TS;
2718
2719	/* we iterate until we find two PCRs to estimate the bitrate */
2720	pcr_pid = -1;
2721	nb_pcrs = 0;
2722	nb_packets = 0;
2723	for (;;) {
2724	ret = read_packet(s, packet, ts->raw_packet_size, &data);
2725	if (ret < 0)
2726	return ret;
2727	pid = AV_RB16(data + 1) & 0x1fff;
2728	if ((pcr_pid == -1 || pcr_pid == pid) &&
2729	parse_pcr(&pcr_h, &pcr_l, data) == 0) {
2730	finished_reading_packet(s, ts->raw_packet_size);
2731	pcr_pid = pid;
2732	packet_count[nb_pcrs] = nb_packets;
2733	pcrs[nb_pcrs] = pcr_h * 300 + pcr_l;
2734	nb_pcrs++;
2735	if (nb_pcrs >= 2) {
2736	if (pcrs[1] - pcrs[0] > 0) {
2737	/* the difference needs to be positive to make sense for bitrate computation */
2738	break;
2739	} else {
2740	av_log(ts->stream, AV_LOG_WARNING, "invalid pcr pair %"PRId64" >= %"PRId64"\n", pcrs[0], pcrs[1]);
2741	pcrs[0] = pcrs[1];
2742	packet_count[0] = packet_count[1];
2743	nb_pcrs--;
2744	}
2745	}
2746	} else {
2747	finished_reading_packet(s, ts->raw_packet_size);
2748	}
2749	nb_packets++;
2750	}
2751
2752	/* NOTE1: the bitrate is computed without the FEC */
2753	/* NOTE2: it is only the bitrate of the start of the stream */
2754	ts->pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - packet_count[0]);
2755	ts->cur_pcr = pcrs[0] - ts->pcr_incr * packet_count[0];
2756	s->bit_rate = TS_PACKET_SIZE * 8 * 27000000LL / ts->pcr_incr;
2757	st->codecpar->bit_rate = s->bit_rate;
2758	st->start_time = ts->cur_pcr;
2759	av_log(ts->stream, AV_LOG_TRACE, "start=%0.3f pcr=%0.3f incr=%d\n",
2760	st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr);
2761	}
2762
2763	seek_back(s, pb, pos);
2764	return 0;
2765	}
2766
2767	#define MAX_PACKET_READAHEAD ((128 * 1024) / 188)
2768
2769	static int mpegts_raw_read_packet(AVFormatContext *s, AVPacket *pkt)
2770	{
2771	MpegTSContext *ts = s->priv_data;
2772	int ret, i;
2773	int64_t pcr_h, next_pcr_h, pos;
2774	int pcr_l, next_pcr_l;
2775	uint8_t pcr_buf[12];
2776	const uint8_t *data;
2777
2778	if (av_new_packet(pkt, TS_PACKET_SIZE) < 0)
2779	return AVERROR(ENOMEM);
2780	ret = read_packet(s, pkt->data, ts->raw_packet_size, &data);
2781	pkt->pos = avio_tell(s->pb);
2782	if (ret < 0) {
2783	av_packet_unref(pkt);
2784	return ret;
2785	}
2786	if (data != pkt->data)
2787	memcpy(pkt->data, data, ts->raw_packet_size);
2788	finished_reading_packet(s, ts->raw_packet_size);
2789	if (ts->mpeg2ts_compute_pcr) {
2790	/* compute exact PCR for each packet */
2791	if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) {
2792	/* we read the next PCR (XXX: optimize it by using a bigger buffer */
2793	pos = avio_tell(s->pb);
2794	for (i = 0; i < MAX_PACKET_READAHEAD; i++) {
2795	avio_seek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
2796	avio_read(s->pb, pcr_buf, 12);
2797	if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
2798	/* XXX: not precise enough */
2799	ts->pcr_incr =
2800	((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
2801	(i + 1);
2802	break;
2803	}
2804	}
2805	avio_seek(s->pb, pos, SEEK_SET);
2806	/* no next PCR found: we use previous increment */
2807	ts->cur_pcr = pcr_h * 300 + pcr_l;
2808	}
2809	pkt->pts = ts->cur_pcr;
2810	pkt->duration = ts->pcr_incr;
2811	ts->cur_pcr += ts->pcr_incr;
2812	}
2813	pkt->stream_index = 0;
2814	return 0;
2815	}
2816
2817	static int mpegts_read_packet(AVFormatContext *s, AVPacket *pkt)
2818	{
2819	MpegTSContext *ts = s->priv_data;
2820	int ret, i;
2821
2822	pkt->size = -1;
2823	ts->pkt = pkt;
2824	ret = handle_packets(ts, 0);
2825	if (ret < 0) {
2826	av_packet_unref(ts->pkt);
2827	/* flush pes data left */
2828	for (i = 0; i < NB_PID_MAX; i++)
2829	if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
2830	PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
2831	if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
2832	ret = new_pes_packet(pes, pkt);
2833	if (ret < 0)
2834	return ret;
2835	pes->state = MPEGTS_SKIP;
2836	ret = 0;
2837	break;
2838	}
2839	}
2840	}
2841
2842	if (!ret && pkt->size < 0)
2843	ret = AVERROR_INVALIDDATA;
2844	return ret;
2845	}
2846
2847	static void mpegts_free(MpegTSContext *ts)
2848	{
2849	int i;
2850
2851	clear_programs(ts);
2852
2853	for (i = 0; i < NB_PID_MAX; i++)
2854	if (ts->pids[i])
2855	mpegts_close_filter(ts, ts->pids[i]);
2856	}
2857
2858	static int mpegts_read_close(AVFormatContext *s)
2859	{
2860	MpegTSContext *ts = s->priv_data;
2861	mpegts_free(ts);
2862	return 0;
2863	}
2864
2865	static av_unused int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index,
2866	int64_t *ppos, int64_t pos_limit)
2867	{
2868	MpegTSContext *ts = s->priv_data;
2869	int64_t pos, timestamp;
2870	uint8_t buf[TS_PACKET_SIZE];
2871	int pcr_l, pcr_pid =
2872	((PESContext *)s->streams[stream_index]->priv_data)->pcr_pid;
2873	int pos47 = ts->pos47_full % ts->raw_packet_size;
2874	pos =
2875	((*ppos + ts->raw_packet_size - 1 - pos47) / ts->raw_packet_size) *
2876	ts->raw_packet_size + pos47;
2877	while(pos < pos_limit) {
2878	if (avio_seek(s->pb, pos, SEEK_SET) < 0)
2879	return AV_NOPTS_VALUE;
2880	if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
2881	return AV_NOPTS_VALUE;
2882	if (buf[0] != 0x47) {
2883	if (mpegts_resync(s, TS_PACKET_SIZE, buf) < 0)
2884	return AV_NOPTS_VALUE;
2885	pos = avio_tell(s->pb);
2886	continue;
2887	}
2888	if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
2889	parse_pcr(&timestamp, &pcr_l, buf) == 0) {
2890	*ppos = pos;
2891	return timestamp;
2892	}
2893	pos += ts->raw_packet_size;
2894	}
2895
2896	return AV_NOPTS_VALUE;
2897	}
2898
2899	static int64_t mpegts_get_dts(AVFormatContext *s, int stream_index,
2900	int64_t *ppos, int64_t pos_limit)
2901	{
2902	MpegTSContext *ts = s->priv_data;
2903	int64_t pos;
2904	int pos47 = ts->pos47_full % ts->raw_packet_size;
2905	pos = ((*ppos + ts->raw_packet_size - 1 - pos47) / ts->raw_packet_size) * ts->raw_packet_size + pos47;
2906	ff_read_frame_flush(s);
2907	if (avio_seek(s->pb, pos, SEEK_SET) < 0)
2908	return AV_NOPTS_VALUE;
2909	while(pos < pos_limit) {
2910	int ret;
2911	AVPacket pkt;
2912	av_init_packet(&pkt);
2913	ret = av_read_frame(s, &pkt);
2914	if (ret < 0)
2915	return AV_NOPTS_VALUE;
2916	if (pkt.dts != AV_NOPTS_VALUE && pkt.pos >= 0) {
2917	ff_reduce_index(s, pkt.stream_index);
2918	av_add_index_entry(s->streams[pkt.stream_index], pkt.pos, pkt.dts, 0, 0, AVINDEX_KEYFRAME /* FIXME keyframe? */);
2919	if (pkt.stream_index == stream_index && pkt.pos >= *ppos) {
2920	int64_t dts = pkt.dts;
2921	*ppos = pkt.pos;
2922	av_packet_unref(&pkt);
2923	return dts;
2924	}
2925	}
2926	pos = pkt.pos;
2927	av_packet_unref(&pkt);
2928	}
2929
2930	return AV_NOPTS_VALUE;
2931	}
2932
2933	/**************************************************************/
2934	/* parsing functions - called from other demuxers such as RTP */
2935
2936	MpegTSContext *avpriv_mpegts_parse_open(AVFormatContext *s)
2937	{
2938	MpegTSContext *ts;
2939
2940	ts = av_mallocz(sizeof(MpegTSContext));
2941	if (!ts)
2942	return NULL;
2943	/* no stream case, currently used by RTP */
2944	ts->raw_packet_size = TS_PACKET_SIZE;
2945	ts->stream = s;
2946	ts->auto_guess = 1;
2947	mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
2948	mpegts_open_section_filter(ts, PAT_PID, pat_cb, ts, 1);
2949
2950	return ts;
2951	}
2952
2953	/* return the consumed length if a packet was output, or -1 if no
2954	* packet is output */
2955	int avpriv_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt,
2956	const uint8_t *buf, int len)
2957	{
2958	int len1;
2959
2960	len1 = len;
2961	ts->pkt = pkt;
2962	for (;;) {
2963	ts->stop_parse = 0;
2964	if (len < TS_PACKET_SIZE)
2965	return AVERROR_INVALIDDATA;
2966	if (buf[0] != 0x47) {
2967	buf++;
2968	len--;
2969	} else {
2970	handle_packet(ts, buf);
2971	buf += TS_PACKET_SIZE;
2972	len -= TS_PACKET_SIZE;
2973	if (ts->stop_parse == 1)
2974	break;
2975	}
2976	}
2977	return len1 - len;
2978	}
2979
2980	void avpriv_mpegts_parse_close(MpegTSContext *ts)
2981	{
2982	mpegts_free(ts);
2983	av_free(ts);
2984	}
2985
2986	AVInputFormat ff_mpegts_demuxer = {
2987	.name = "mpegts",
2988	.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2989	.priv_data_size = sizeof(MpegTSContext),
2990	.read_probe = mpegts_probe,
2991	.read_header = mpegts_read_header,
2992	.read_packet = mpegts_read_packet,
2993	.read_close = mpegts_read_close,
2994	.read_timestamp = mpegts_get_dts,
2995	.flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
2996	.priv_class = &mpegts_class,
2997	};
2998
2999	AVInputFormat ff_mpegtsraw_demuxer = {
3000	.name = "mpegtsraw",
3001	.long_name = NULL_IF_CONFIG_SMALL("raw MPEG-TS (MPEG-2 Transport Stream)"),
3002	.priv_data_size = sizeof(MpegTSContext),
3003	.read_header = mpegts_read_header,
3004	.read_packet = mpegts_raw_read_packet,
3005	.read_close = mpegts_read_close,
3006	.read_timestamp = mpegts_get_dts,
3007	.flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
3008	.priv_class = &mpegtsraw_class,
3009	};
3010