mpegtsenc.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/bswap.h"
#include "libavutil/crc.h"
#include "libavutil/dict.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavcodec/ac3_parser_internal.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/defs.h"
#include "libavcodec/h264.h"
#include "libavcodec/startcode.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "mpegts.h"
#include "mux.h"

Go to the source code of this file.

Data Structures
struct	MpegTSSection
struct	MpegTSService
struct	MpegTSWrite
struct	MpegTSWriteStream

Macros
#define	PCR_TIME_BASE   27000000
#define	DVB_PRIVATE_NETWORK_START   0xff01
#define	MPEGTS_FLAG_REEMIT_PAT_PMT   0x01
#define	MPEGTS_FLAG_AAC_LATM   0x02
#define	MPEGTS_FLAG_PAT_PMT_AT_FRAMES   0x04
#define	MPEGTS_FLAG_SYSTEM_B   0x08
#define	MPEGTS_FLAG_DISCONT   0x10
#define	MPEGTS_FLAG_NIT   0x20
#define	MPEGTS_FLAG_OMIT_RAI   0x40
#define	DEFAULT_PES_HEADER_FREQ   16
#define	DEFAULT_PES_PAYLOAD_SIZE   ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
#define	SECTION_LENGTH   1020
#define	DEFAULT_PROVIDER_NAME   "FFmpeg"
#define	DEFAULT_SERVICE_NAME   "Service"
#define	SDT_RETRANS_TIME   500
#define	PAT_RETRANS_TIME   100
#define	PCR_RETRANS_TIME   20
#define	NIT_RETRANS_TIME   500
#define	OFFSET(x)   offsetof(MpegTSWrite, x)
#define	ENC   AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	{   MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01, MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02, MPEGTS_SERVICE_TYPE_TELETEXT = 0x03, MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,   MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11, MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16, MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19, MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV = 0x1F }

Functions
static void	mpegts_write_section (MpegTSSection *s, uint8_t *buf, int len)
static void	put16 (uint8_t **q_ptr, int val)
static int	mpegts_write_section1 (MpegTSSection *s, int tid, int id, int version, int sec_num, int last_sec_num, uint8_t *buf, int len)
static void	mpegts_write_pat (AVFormatContext *s)
static void	putbuf (uint8_t **q_ptr, const uint8_t *buf, size_t len)
static int	put_arib_caption_descriptor (AVFormatContext *s, uint8_t **q_ptr, AVCodecParameters *codecpar)
static void	put_registration_descriptor (uint8_t **q_ptr, uint32_t tag)
static int	get_dvb_stream_type (AVFormatContext *s, AVStream *st)
static int	get_m2ts_stream_type (AVFormatContext *s, AVStream *st)
static int	mpegts_write_pmt (AVFormatContext *s, MpegTSService *service)
static void	mpegts_write_sdt (AVFormatContext *s)
static void	mpegts_write_nit (AVFormatContext *s)
static int	encode_str8 (uint8_t *buf, const char *str)
static int64_t	get_pcr (const MpegTSWrite *ts)
static void	write_packet (AVFormatContext *s, const uint8_t *packet)
static void	section_write_packet (MpegTSSection *s, const uint8_t *packet)
static MpegTSService *	mpegts_add_service (AVFormatContext *s, int sid, const AVDictionary *metadata, AVProgram *program)
static void	enable_pcr_generation_for_stream (AVFormatContext *s, AVStream *pcr_st)
static void	select_pcr_streams (AVFormatContext *s)
static int	mpegts_init (AVFormatContext *s)
static void	retransmit_si_info (AVFormatContext *s, int force_pat, int force_sdt, int force_nit, int64_t pcr)
static int	write_pcr_bits (uint8_t *buf, int64_t pcr)
static void	mpegts_insert_null_packet (AVFormatContext *s)
static void	mpegts_insert_pcr_only (AVFormatContext *s, AVStream *st)
static void	write_pts (uint8_t *q, int fourbits, int64_t pts)
static void	set_af_flag (uint8_t *pkt, int flag)
static void	extend_af (uint8_t *pkt, int size)
static uint8_t *	get_ts_payload_start (uint8_t *pkt)
static int	get_pes_stream_id (AVFormatContext *s, AVStream *st, int stream_id, int *async)
static void	mpegts_write_pes (AVFormatContext *s, AVStream *st, const uint8_t *payload, int payload_size, int64_t pts, int64_t dts, int key, int stream_id)
int	ff_check_h264_startcode (AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
	Check presence of H264 startcode. More...
static int	check_hevc_startcode (AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
static int	opus_get_packet_samples (AVFormatContext *s, AVPacket *pkt)
static int	mpegts_write_packet_internal (AVFormatContext *s, AVPacket *pkt)
static void	mpegts_write_flush (AVFormatContext *s)
static int	mpegts_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	mpegts_write_end (AVFormatContext *s)
static void	mpegts_deinit (AVFormatContext *s)
static int	mpegts_check_bitstream (AVFormatContext *s, AVStream *st, const AVPacket *pkt)

Variables
static const AVOption	options []
static const AVClass	mpegts_muxer_class
const FFOutputFormat	ff_mpegts_muxer

Macro Definition Documentation

PCR_TIME_BASE

#define PCR_TIME_BASE   27000000

Definition at line 42 of file mpegtsenc.c.

DVB_PRIVATE_NETWORK_START

#define DVB_PRIVATE_NETWORK_START   0xff01

Definition at line 46 of file mpegtsenc.c.

MPEGTS_FLAG_REEMIT_PAT_PMT

#define MPEGTS_FLAG_REEMIT_PAT_PMT   0x01

Definition at line 111 of file mpegtsenc.c.

MPEGTS_FLAG_AAC_LATM

#define MPEGTS_FLAG_AAC_LATM   0x02

Definition at line 112 of file mpegtsenc.c.

MPEGTS_FLAG_PAT_PMT_AT_FRAMES

#define MPEGTS_FLAG_PAT_PMT_AT_FRAMES   0x04

Definition at line 113 of file mpegtsenc.c.

MPEGTS_FLAG_SYSTEM_B

#define MPEGTS_FLAG_SYSTEM_B   0x08

Definition at line 114 of file mpegtsenc.c.

MPEGTS_FLAG_DISCONT

#define MPEGTS_FLAG_DISCONT   0x10

Definition at line 115 of file mpegtsenc.c.

MPEGTS_FLAG_NIT

#define MPEGTS_FLAG_NIT   0x20

Definition at line 116 of file mpegtsenc.c.

MPEGTS_FLAG_OMIT_RAI

#define MPEGTS_FLAG_OMIT_RAI   0x40

Definition at line 117 of file mpegtsenc.c.

DEFAULT_PES_HEADER_FREQ

#define DEFAULT_PES_HEADER_FREQ   16

Definition at line 134 of file mpegtsenc.c.

DEFAULT_PES_PAYLOAD_SIZE

#define DEFAULT_PES_PAYLOAD_SIZE   ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)

Definition at line 135 of file mpegtsenc.c.

SECTION_LENGTH

#define SECTION_LENGTH   1020

Definition at line 139 of file mpegtsenc.c.

DEFAULT_PROVIDER_NAME

#define DEFAULT_PROVIDER_NAME   "FFmpeg"

Definition at line 235 of file mpegtsenc.c.

DEFAULT_SERVICE_NAME

#define DEFAULT_SERVICE_NAME   "Service"

Definition at line 236 of file mpegtsenc.c.

SDT_RETRANS_TIME

#define SDT_RETRANS_TIME   500

Definition at line 239 of file mpegtsenc.c.

PAT_RETRANS_TIME

#define PAT_RETRANS_TIME   100

Definition at line 240 of file mpegtsenc.c.

PCR_RETRANS_TIME

#define PCR_RETRANS_TIME   20

Definition at line 241 of file mpegtsenc.c.

NIT_RETRANS_TIME

#define NIT_RETRANS_TIME   500

Definition at line 242 of file mpegtsenc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(MpegTSWrite, x)

Definition at line 2279 of file mpegtsenc.c.

ENC

#define ENC   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 2280 of file mpegtsenc.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
MPEGTS_SERVICE_TYPE_DIGITAL_TV
MPEGTS_SERVICE_TYPE_DIGITAL_RADIO
MPEGTS_SERVICE_TYPE_TELETEXT
MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO
MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV
MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV
MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV
MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV

Definition at line 69 of file mpegtsenc.c.

Function Documentation

mpegts_write_section()

static void mpegts_write_section ( MpegTSSection *  s, uint8_t *  buf, int  len  )

static

Definition at line 142 of file mpegtsenc.c.

Referenced by mpegts_write_section1().

put16()

static void put16 ( uint8_t **  q_ptr, int  val  )

inlinestatic

Definition at line 196 of file mpegtsenc.c.

Referenced by mpegts_write_nit(), mpegts_write_pat(), mpegts_write_pmt(), mpegts_write_sdt(), mpegts_write_section1(), and put_arib_caption_descriptor().

mpegts_write_section1()

static int mpegts_write_section1 ( MpegTSSection *  s, int  tid, int  id, int  version, int  sec_num, int  last_sec_num, uint8_t *  buf, int  len  )

static

Definition at line 205 of file mpegtsenc.c.

Referenced by mpegts_write_nit(), mpegts_write_pat(), mpegts_write_pmt(), and mpegts_write_sdt().

mpegts_write_pat()

static void mpegts_write_pat ( AVFormatContext *  s )

static

Definition at line 268 of file mpegtsenc.c.

Referenced by retransmit_si_info().

putbuf()

static void putbuf ( uint8_t **  q_ptr, const uint8_t *  buf, size_t  len  )

static

Definition at line 289 of file mpegtsenc.c.

Referenced by mpegts_write_nit(), mpegts_write_pmt(), and mpegts_write_sdt().

put_arib_caption_descriptor()

static int put_arib_caption_descriptor ( AVFormatContext *  s, uint8_t **  q_ptr, AVCodecParameters *  codecpar  )

static

Definition at line 295 of file mpegtsenc.c.

Referenced by mpegts_write_pmt().

put_registration_descriptor()

static void put_registration_descriptor ( uint8_t **  q_ptr, uint32_t  tag  )

static

Definition at line 339 of file mpegtsenc.c.

Referenced by mpegts_write_pmt().

get_dvb_stream_type()

static int get_dvb_stream_type ( AVFormatContext *  s, AVStream *  st  )

static

Definition at line 351 of file mpegtsenc.c.

Referenced by mpegts_write_pmt().

get_m2ts_stream_type()

static int get_m2ts_stream_type ( AVFormatContext *  s, AVStream *  st  )

static

Definition at line 452 of file mpegtsenc.c.

Referenced by mpegts_write_pmt().

mpegts_write_pmt()

static int mpegts_write_pmt ( AVFormatContext *  s, MpegTSService *  service  )

static

Definition at line 503 of file mpegtsenc.c.

Referenced by retransmit_si_info().

mpegts_write_sdt()

static void mpegts_write_sdt ( AVFormatContext *  s )

static

Definition at line 842 of file mpegtsenc.c.

Referenced by retransmit_si_info().

mpegts_write_nit()

static void mpegts_write_nit ( AVFormatContext *  s )

static

Definition at line 880 of file mpegtsenc.c.

Referenced by retransmit_si_info().

encode_str8()

static int encode_str8 ( uint8_t *  buf, const char *  str  )

static

Definition at line 925 of file mpegtsenc.c.

Referenced by mpegts_add_service(), and mpegts_init().

get_pcr()

static int64_t get_pcr ( const MpegTSWrite *  ts )

static

Definition at line 957 of file mpegtsenc.c.

Referenced by mpegts_insert_pcr_only(), mpegts_write_pes(), and write_packet().

write_packet()

static void write_packet ( AVFormatContext *  s, const uint8_t *  packet  )

static

Definition at line 963 of file mpegtsenc.c.

Referenced by mpegts_insert_null_packet(), mpegts_insert_pcr_only(), mpegts_write_pes(), and section_write_packet().

section_write_packet()

static void section_write_packet ( MpegTSSection *  s, const uint8_t *  packet  )

static

Definition at line 977 of file mpegtsenc.c.

Referenced by mpegts_add_service(), and mpegts_init().

mpegts_add_service()

static MpegTSService* mpegts_add_service ( AVFormatContext *  s, int  sid, const AVDictionary *  metadata, AVProgram *  program  )

static

Definition at line 983 of file mpegtsenc.c.

Referenced by mpegts_init().

enable_pcr_generation_for_stream()

static void enable_pcr_generation_for_stream ( AVFormatContext *  s, AVStream *  pcr_st  )

static

Definition at line 1028 of file mpegtsenc.c.

Referenced by select_pcr_streams().

select_pcr_streams()

static void select_pcr_streams ( AVFormatContext *  s )

static

Definition at line 1059 of file mpegtsenc.c.

Referenced by mpegts_init().

mpegts_init()

static int mpegts_init ( AVFormatContext *  s )

static

Definition at line 1088 of file mpegtsenc.c.

retransmit_si_info()

static void retransmit_si_info ( AVFormatContext *  s, int  force_pat, int  force_sdt, int  force_nit, int64_t  pcr  )

static

Definition at line 1303 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

write_pcr_bits()

static int write_pcr_bits ( uint8_t *  buf, int64_t  pcr  )

static

Definition at line 1336 of file mpegtsenc.c.

Referenced by mpegts_insert_pcr_only(), and mpegts_write_pes().

mpegts_insert_null_packet()

static void mpegts_insert_null_packet ( AVFormatContext *  s )

static

Definition at line 1351 of file mpegtsenc.c.

Referenced by mpegts_write_flush(), and mpegts_write_pes().

mpegts_insert_pcr_only()

static void mpegts_insert_pcr_only ( AVFormatContext *  s, AVStream *  st  )

static

Definition at line 1366 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

write_pts()

static void write_pts ( uint8_t *  q, int  fourbits, int64_t  pts  )

static

Definition at line 1394 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

set_af_flag()

static void set_af_flag ( uint8_t *  pkt, int  flag  )

static

Definition at line 1409 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

extend_af()

static void extend_af ( uint8_t *  pkt, int  size  )

static

Definition at line 1425 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

get_ts_payload_start()

static uint8_t* get_ts_payload_start ( uint8_t *  pkt )

static

Definition at line 1433 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

get_pes_stream_id()

static int get_pes_stream_id ( AVFormatContext *  s, AVStream *  st, int  stream_id, int *  async  )

static

Definition at line 1441 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

mpegts_write_pes()

static void mpegts_write_pes ( AVFormatContext *  s, AVStream *  st, const uint8_t *  payload, int  payload_size, int64_t  pts, int64_t  dts, int  key, int  stream_id  )

static

Definition at line 1476 of file mpegtsenc.c.

Referenced by mpegts_write_flush(), and mpegts_write_packet_internal().

ff_check_h264_startcode()

int ff_check_h264_startcode	(	AVFormatContext *	s,
		const AVStream *	st,
		const AVPacket *	pkt
	)

Check presence of H264 startcode.

Returns

<0 to stop processing

Definition at line 1762 of file mpegtsenc.c.

Referenced by avi_write_packet(), mpegts_write_packet_internal(), and write_packet().

check_hevc_startcode()

static int check_hevc_startcode ( AVFormatContext *  s, const AVStream *  st, const AVPacket *  pkt  )

static

Definition at line 1779 of file mpegtsenc.c.

Referenced by mpegts_write_packet_internal().

opus_get_packet_samples()

static int opus_get_packet_samples ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 1798 of file mpegtsenc.c.

Referenced by mpegts_write_packet_internal().

mpegts_write_packet_internal()

static int mpegts_write_packet_internal ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 1846 of file mpegtsenc.c.

Referenced by mpegts_write_packet().

mpegts_write_flush()

static void mpegts_write_flush ( AVFormatContext *  s )

static

Definition at line 2188 of file mpegtsenc.c.

Referenced by mpegts_write_end(), and mpegts_write_packet().

mpegts_write_packet()

static int mpegts_write_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 2213 of file mpegtsenc.c.

mpegts_write_end()

static int mpegts_write_end ( AVFormatContext *  s )

static

Definition at line 2223 of file mpegtsenc.c.

mpegts_deinit()

static void mpegts_deinit ( AVFormatContext *  s )

static

Definition at line 2231 of file mpegtsenc.c.

mpegts_check_bitstream()

static int mpegts_check_bitstream ( AVFormatContext *  s, AVStream *  st, const AVPacket *  pkt  )

static

Definition at line 2257 of file mpegtsenc.c.

Variable Documentation

options

const AVOption options[]

static

Definition at line 2281 of file mpegtsenc.c.

mpegts_muxer_class

const AVClass mpegts_muxer_class

static

Initial value:

= {
    .class_name = "MPEGTS muxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 2344 of file mpegtsenc.c.

ff_mpegts_muxer

const FFOutputFormat ff_mpegts_muxer

Initial value:

= {
    .p.name         = "mpegts",
    .p.long_name    = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
    .p.mime_type    = "video/MP2T",
    .p.extensions   = "ts,m2t,m2ts,mts",
    .priv_data_size = sizeof(MpegTSWrite),
    .p.audio_codec  = AV_CODEC_ID_MP2,
    .p.video_codec  = AV_CODEC_ID_MPEG2VIDEO,
    .init           = mpegts_init,
    .write_packet   = mpegts_write_packet,
    .write_trailer  = mpegts_write_end,
    .deinit         = mpegts_deinit,
    .check_bitstream = mpegts_check_bitstream,
 
 
 
    .p.flags         = AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
 
    .flags_internal  = FF_FMT_ALLOW_FLUSH,
    .p.priv_class   = &mpegts_muxer_class,
}

Definition at line 2351 of file mpegtsenc.c.