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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/internal.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "mpegts.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 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 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   "Service01"
 
#define SDT_RETRANS_TIME   500
 
#define PAT_RETRANS_TIME   100
 
#define PCR_RETRANS_TIME   20
 

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
}
 

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 int mpegts_write_pmt (AVFormatContext *s, MpegTSService *service)
 
static void putstr8 (uint8_t **q_ptr, const char *str)
 
static void mpegts_write_sdt (AVFormatContext *s)
 
static MpegTSService * mpegts_add_service (MpegTSWrite *ts, int sid, const char *provider_name, const char *name)
 
static int64_t get_pcr (const MpegTSWrite *ts, AVIOContext *pb)
 
static void mpegts_prefix_m2ts_header (AVFormatContext *s)
 
static void section_write_packet (MpegTSSection *s, const uint8_t *packet)
 
static int mpegts_init (AVFormatContext *s)
 
static void retransmit_si_info (AVFormatContext *s, int force_pat, int64_t dts)
 
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 void mpegts_write_pes (AVFormatContext *s, AVStream *st, const uint8_t *payload, int payload_size, int64_t pts, int64_t dts, int key)
 
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 (struct AVFormatContext *s, const AVPacket *pkt)
 

Variables

static const AVOption options []
 
static const AVClass mpegts_muxer_class
 
AVOutputFormat ff_mpegts_muxer
 

Macro Definition Documentation

#define PCR_TIME_BASE   27000000

Definition at line 37 of file mpegtsenc.c.

Referenced by get_pcr(), and mpegts_init().

#define MPEGTS_FLAG_REEMIT_PAT_PMT   0x01

Definition at line 99 of file mpegtsenc.c.

Referenced by mpegts_write_packet_internal().

#define MPEGTS_FLAG_AAC_LATM   0x02

Definition at line 100 of file mpegtsenc.c.

Referenced by mpegts_init(), and mpegts_write_pmt().

#define MPEGTS_FLAG_PAT_PMT_AT_FRAMES   0x04

Definition at line 101 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

#define MPEGTS_FLAG_SYSTEM_B   0x08

Definition at line 102 of file mpegtsenc.c.

Referenced by mpegts_write_pmt().

#define DEFAULT_PES_HEADER_FREQ   16

Definition at line 115 of file mpegtsenc.c.

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

Definition at line 116 of file mpegtsenc.c.

#define SECTION_LENGTH   1020

Definition at line 120 of file mpegtsenc.c.

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

#define DEFAULT_PROVIDER_NAME   "FFmpeg"

Definition at line 210 of file mpegtsenc.c.

Referenced by mpegts_init().

#define DEFAULT_SERVICE_NAME   "Service01"

Definition at line 211 of file mpegtsenc.c.

Referenced by mpegts_init().

#define SDT_RETRANS_TIME   500

Definition at line 214 of file mpegtsenc.c.

Referenced by mpegts_init().

#define PAT_RETRANS_TIME   100

Definition at line 215 of file mpegtsenc.c.

Referenced by mpegts_init().

#define PCR_RETRANS_TIME   20

Definition at line 216 of file mpegtsenc.c.

Enumeration Type Documentation

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 

Definition at line 62 of file mpegtsenc.c.

Function Documentation

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

Definition at line 123 of file mpegtsenc.c.

Referenced by mpegts_write_section1().

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

Definition at line 171 of file mpegtsenc.c.

Referenced by mpegts_write_pat(), mpegts_write_pmt(), mpegts_write_sdt(), and 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 180 of file mpegtsenc.c.

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

static void mpegts_write_pat ( AVFormatContext *  s)
static

Definition at line 237 of file mpegtsenc.c.

Referenced by retransmit_si_info().

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

Definition at line 254 of file mpegtsenc.c.

Referenced by retransmit_si_info().

static void putstr8 ( uint8_t **  q_ptr,
const char *  str 
)
static

Definition at line 625 of file mpegtsenc.c.

Referenced by mpegts_write_sdt().

static void mpegts_write_sdt ( AVFormatContext *  s)
static

Definition at line 641 of file mpegtsenc.c.

Referenced by retransmit_si_info().

static MpegTSService* mpegts_add_service ( MpegTSWrite *  ts,
int  sid,
const char *  provider_name,
const char *  name 
)
static

Definition at line 679 of file mpegtsenc.c.

Referenced by mpegts_init().

static int64_t get_pcr ( const MpegTSWrite *  ts,
AVIOContext *  pb 
)
static

Definition at line 706 of file mpegtsenc.c.

Referenced by mpegts_insert_pcr_only(), mpegts_prefix_m2ts_header(), and mpegts_write_pes().

static void mpegts_prefix_m2ts_header ( AVFormatContext *  s)
static

Definition at line 712 of file mpegtsenc.c.

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

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

Definition at line 724 of file mpegtsenc.c.

Referenced by mpegts_init().

static int mpegts_init ( AVFormatContext *  s)
static

Definition at line 731 of file mpegtsenc.c.

static void retransmit_si_info ( AVFormatContext *  s,
int  force_pat,
int64_t  dts 
)
static

Definition at line 978 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

static int write_pcr_bits ( uint8_t *  buf,
int64_t  pcr 
)
static

Definition at line 1005 of file mpegtsenc.c.

Referenced by mpegts_insert_pcr_only(), and mpegts_write_pes().

static void mpegts_insert_null_packet ( AVFormatContext *  s)
static

Definition at line 1020 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

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

Definition at line 1036 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

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

Definition at line 1061 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

static void set_af_flag ( uint8_t *  pkt,
int  flag 
)
static

Definition at line 1076 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

static void extend_af ( uint8_t *  pkt,
int  size 
)
static

Definition at line 1092 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

static uint8_t* get_ts_payload_start ( uint8_t *  pkt)
static

Definition at line 1100 of file mpegtsenc.c.

Referenced by 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 
)
static

Definition at line 1112 of file mpegtsenc.c.

Referenced by mpegts_write_flush(), and mpegts_write_packet_internal().

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 1361 of file mpegtsenc.c.

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

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

Definition at line 1377 of file mpegtsenc.c.

Referenced by mpegts_write_packet_internal().

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

Definition at line 1395 of file mpegtsenc.c.

Referenced by mpegts_write_packet_internal().

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

Definition at line 1443 of file mpegtsenc.c.

Referenced by mpegts_write_packet().

static void mpegts_write_flush ( AVFormatContext *  s)
static

Definition at line 1676 of file mpegtsenc.c.

Referenced by mpegts_write_end(), and mpegts_write_packet().

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

Definition at line 1694 of file mpegtsenc.c.

static int mpegts_write_end ( AVFormatContext *  s)
static

Definition at line 1704 of file mpegtsenc.c.

static void mpegts_deinit ( AVFormatContext *  s)
static

Definition at line 1712 of file mpegtsenc.c.

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

Definition at line 1739 of file mpegtsenc.c.

Variable Documentation

const AVOption options[]
static

Definition at line 1757 of file mpegtsenc.c.

const AVClass mpegts_muxer_class
static
Initial value:
= {
.class_name = "MPEGTS muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
}
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
av_default_item_name
av_default_item_name
Definition: libopenh264enc.c:68
options
static const AVOption options[]
Definition: mpegtsenc.c:1757

Definition at line 1846 of file mpegtsenc.c.

AVOutputFormat ff_mpegts_muxer
Initial value:
= {
.name = "mpegts",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
.mime_type = "video/MP2T",
.extensions = "ts,m2t,m2ts,mts",
.priv_data_size = sizeof(MpegTSWrite),
.audio_codec = AV_CODEC_ID_MP2,
.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,
.flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS,
.priv_class = &mpegts_muxer_class,
}
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
mpegts_init
static int mpegts_init(AVFormatContext *s)
Definition: mpegtsenc.c:731
AVFMT_ALLOW_FLUSH
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:494
mpegts_check_bitstream
static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
Definition: mpegtsenc.c:1739
mpegts_write_packet
static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mpegtsenc.c:1694
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:106
mpegts_deinit
static void mpegts_deinit(AVFormatContext *s)
Definition: mpegtsenc.c:1712
mpegts_write_end
static int mpegts_write_end(AVFormatContext *s)
Definition: mpegtsenc.c:1704
AV_CODEC_ID_MP2
Definition: avcodec.h:419
flags
static int flags
Definition: cpu.c:47
AVFMT_VARIABLE_FPS
#define AVFMT_VARIABLE_FPS
Format allows variable fps.
Definition: avformat.h:488
mpegts_muxer_class
static const AVClass mpegts_muxer_class
Definition: mpegtsenc.c:1846
write_packet
static int write_packet(AVFormatContext *s1, AVPacket *pkt)
Definition: v4l2enc.c:86

Definition at line 1853 of file mpegtsenc.c.

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