Libav
Data Structures | Macros | Functions | Variables
mpegtsenc.c File Reference
#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 "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 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   "Libav"
 
#define DEFAULT_SERVICE_NAME   "Service01"
 
#define SDT_RETRANS_TIME   500
 
#define PAT_RETRANS_TIME   100
 
#define PCR_RETRANS_TIME   20
 

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 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 void section_write_packet (MpegTSSection *s, const uint8_t *packet)
 
static int mpegts_write_header (AVFormatContext *s)
 
static void retransmit_si_info (AVFormatContext *s)
 
static int64_t get_pcr (const MpegTSWrite *ts, AVIOContext *pb)
 
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)
 
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)
 

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 33 of file mpegtsenc.c.

Referenced by get_pcr(), and mpegts_write_header().

#define MPEGTS_FLAG_REEMIT_PAT_PMT   0x01

Definition at line 82 of file mpegtsenc.c.

Referenced by mpegts_write_packet_internal().

#define MPEGTS_FLAG_AAC_LATM   0x02

Definition at line 83 of file mpegtsenc.c.

Referenced by mpegts_write_header(), and mpegts_write_pmt().

#define DEFAULT_PES_HEADER_FREQ   16

Definition at line 88 of file mpegtsenc.c.

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

Definition at line 89 of file mpegtsenc.c.

#define SECTION_LENGTH   1020

Definition at line 93 of file mpegtsenc.c.

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

#define DEFAULT_PROVIDER_NAME   "Libav"

Definition at line 216 of file mpegtsenc.c.

Referenced by mpegts_write_header().

#define DEFAULT_SERVICE_NAME   "Service01"

Definition at line 217 of file mpegtsenc.c.

Referenced by mpegts_write_header().

#define SDT_RETRANS_TIME   500

Definition at line 220 of file mpegtsenc.c.

Referenced by mpegts_write_header().

#define PAT_RETRANS_TIME   100

Definition at line 221 of file mpegtsenc.c.

Referenced by mpegts_write_header().

#define PCR_RETRANS_TIME   20

Definition at line 222 of file mpegtsenc.c.

Referenced by mpegts_write_header().

Function Documentation

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

Definition at line 131 of file mpegtsenc.c.

Referenced by mpegts_write_section1().

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

Definition at line 177 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 186 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 void 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 414 of file mpegtsenc.c.

Referenced by mpegts_write_sdt().

static void mpegts_write_sdt ( AVFormatContext *  s)
static

Definition at line 430 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 468 of file mpegtsenc.c.

Referenced by mpegts_write_header().

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

Definition at line 487 of file mpegtsenc.c.

Referenced by mpegts_write_header().

static int mpegts_write_header ( AVFormatContext *  s)
static

Definition at line 493 of file mpegtsenc.c.

static void retransmit_si_info ( AVFormatContext *  s)
static

Definition at line 688 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

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(), and mpegts_write_pes().

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

Definition at line 712 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 727 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

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

Definition at line 742 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 766 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

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

Definition at line 781 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

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

Definition at line 797 of file mpegtsenc.c.

Referenced by mpegts_write_pes().

static uint8_t* get_ts_payload_start ( uint8_t *  pkt)
static

Definition at line 805 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 818 of file mpegtsenc.c.

Referenced by mpegts_write_flush(), and mpegts_write_packet_internal().

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

Definition at line 1004 of file mpegtsenc.c.

Referenced by mpegts_write_packet().

static void mpegts_write_flush ( AVFormatContext *  s)
static

Definition at line 1136 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 1154 of file mpegtsenc.c.

static int mpegts_write_end ( AVFormatContext *  s)
static

Definition at line 1164 of file mpegtsenc.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{ "mpegts_transport_stream_id", "Set transport_stream_id field.",
0x42, AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_original_network_id", "Set original_network_id field.",
0x42, AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_service_id", "Set service_id field.",
0x42, AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
0x42, AV_OPT_TYPE_INT, {.i64 = 0x1000 }, 0x1000, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_start_pid", "Set the first pid.",
0x42, AV_OPT_TYPE_INT, {.i64 = 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM},
{ "muxrate", NULL, 0x42, AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "pes_payload_size", "Minimum PES packet payload in bytes",
0x42, AV_OPT_TYPE_INT, {.i64 = DEFAULT_PES_PAYLOAD_SIZE}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_flags", "MPEG-TS muxing flags", 0x42, AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
{ "resend_headers", "Reemit PAT/PMT before writing the next packet",
0, AV_OPT_TYPE_CONST, {.i64 = MPEGTS_FLAG_REEMIT_PAT_PMT}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"},
{ "latm", "Use LATM packetization for AAC",
0, AV_OPT_TYPE_CONST, {.i64 = MPEGTS_FLAG_AAC_LATM}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"},
{ "resend_headers", "Reemit PAT/PMT before writing the next packet",
0x42, AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ NULL },
}
AV_OPT_TYPE_INT
Definition: opt.h:220
AV_OPT_TYPE_FLAGS
Definition: opt.h:219
AV_OPT_TYPE_CONST
Definition: opt.h:227
DEFAULT_PES_PAYLOAD_SIZE
#define DEFAULT_PES_PAYLOAD_SIZE
Definition: mpegtsenc.c:89
MPEGTS_FLAG_AAC_LATM
#define MPEGTS_FLAG_AAC_LATM
Definition: mpegtsenc.c:83
AV_OPT_FLAG_ENCODING_PARAM
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:263
MPEGTS_FLAG_REEMIT_PAT_PMT
#define MPEGTS_FLAG_REEMIT_PAT_PMT
Definition: mpegtsenc.c:82
NULL
NULL
Definition: eval.c:55

Definition at line 95 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,
}
options
static const AVOption options[]
Definition: mpegtsenc.c:95
LIBAVUTIL_VERSION_INT
LIBAVUTIL_VERSION_INT
Definition: eval.c:55
av_default_item_name
av_default_item_name
Definition: dnxhdenc.c:45

Definition at line 123 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/x-mpegts",
.extensions = "ts,m2t",
.priv_data_size = sizeof(MpegTSWrite),
.audio_codec = AV_CODEC_ID_MP2,
.video_codec = AV_CODEC_ID_MPEG2VIDEO,
.write_header = mpegts_write_header,
.write_packet = mpegts_write_packet,
.write_trailer = mpegts_write_end,
.flags = AVFMT_ALLOW_FLUSH,
.priv_class = &mpegts_muxer_class,
}
write_packet
static int write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: assenc.c:58
AVFMT_ALLOW_FLUSH
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:416
mpegts_write_packet
static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mpegtsenc.c:1154
flags
static int flags
Definition: log.c:44
write_trailer
static int write_trailer(AVFormatContext *s)
Definition: assenc.c:64
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:142
mpegts_write_header
static int mpegts_write_header(AVFormatContext *s)
Definition: mpegtsenc.c:493
AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:110
mpegts_write_end
static int mpegts_write_end(AVFormatContext *s)
Definition: mpegtsenc.c:1164
AV_CODEC_ID_MP2
Definition: avcodec.h:368
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:380
mpegts_muxer_class
static const AVClass mpegts_muxer_class
Definition: mpegtsenc.c:123

Definition at line 1193 of file mpegtsenc.c.

Generated on Mon Mar 28 2016 15:51:32 for Libav by   doxygen 1.8.7