Used to access the data of a Transport Stream packet. More...

#include <libmythtv/mpeg/tspacket.h>

Inheritance diagram for TSPacket:

Collaboration diagram for TSPacket:

Public Member Functions
	TSPacket (void)=default

TSPacket *	CreateClone (void) const

void	InitPayload (const unsigned char *payload)

void	InitPayload (const unsigned char *payload, uint size)

unsigned int	AFCOffset (void) const

unsigned int	StartOfFieldPointer (void) const

void	SetStartOfFieldPointer (uint sof)

QString	toString (void) const

Public Member Functions inherited from TSHeader
	TSHeader (void)

	TSHeader (int cc)

void	InitHeader (const unsigned char *header)

bool	HasSync (void) const

bool	TransportError (void) const

bool	PayloadStart (void) const

bool	Priority (void) const

unsigned int	PID (void) const

unsigned int	ScramblingControl (void) const

unsigned int	AdaptationFieldControl (void) const

unsigned int	ContinuityCounter (void) const

bool	Scrambled (void) const

bool	HasAdaptationField (void) const

size_t	AdaptationFieldSize (void) const

bool	HasPayload (void) const

bool	GetDiscontinuityIndicator (void) const

bool	HasPCR (void) const

int64_t	GetPCRbase (void) const

int32_t	GetPCRext (void) const

int64_t	GetPCRraw (void) const

TimePoint	GetPCR (void) const

void	SetTransportError (bool err)

void	SetPayloadStart (bool start)

void	SetPriority (bool priority)

void	SetPID (unsigned int pid)

void	SetScrambled (unsigned int scr)

void	SetAdaptationFieldControl (unsigned int afc)

void	SetContinuityCounter (unsigned int cc)

const unsigned char *	data (void) const

unsigned char *	data (void)

Static Public Member Functions
static TSPacket *	CreatePayloadOnlyPacket (void)

Static Public Attributes
static constexpr unsigned int	kSize {188}

static constexpr unsigned int	kPayloadSize {188-4}

static constexpr unsigned int	kDVBEmissionSize {204}

static constexpr unsigned int	kISDBEmissionSize {204}

static constexpr unsigned int	k8VSBEmissionSize {208}

static const TSPacket *	kNullPacket

Static Public Attributes inherited from TSHeader
static constexpr unsigned int	kHeaderSize {4}

static const TSHeaderArray	kPayloadOnlyHeader

Private Attributes
std::array< uint8_t, 184 >	m_tsPayload

Friends
class	PESPacket

Additional Inherited Members
Public Types inherited from TSHeader
using	Clock = std::chrono::steady_clock

using	TimePoint = std::chrono::time_point< Clock, std::chrono::microseconds >

Detailed Description

Used to access the data of a Transport Stream packet.

Warning: Be very, very careful when modifying this data structure. This class is used in the core of the received video data path, and for performance reasons overlaid on the buffer of bytes received from the network. It therefore can only contain (per-instance) variables that directly correspond to the data bytes received from the broadcaster. There may be static variables in this class, but absolutely no per-instance variables that are not part of the overlaid byte stream. There also must not be any virtual functions in this class, as the vtable is implemented as a per-instance variable in the class structure, and would mess up the overlaying of this structure on the received byte stream.

See also: TSHeader, PESPacket, HDTVRecorder

Definition at line 205 of file tspacket.h.

Constructor & Destructor Documentation

◆ TSPacket()

TSPacket::TSPacket ( void )

default

Member Function Documentation

◆ CreatePayloadOnlyPacket()

static TSPacket* TSPacket::CreatePayloadOnlyPacket ( void )

inlinestatic

Definition at line 213 of file tspacket.h.

Referenced by ProgramAssociationTable::CreateBlank(), and ProgramMapTable::CreateBlank().

◆ CreateClone()

TSPacket* TSPacket::CreateClone ( void ) const

inline

Definition at line 222 of file tspacket.h.

Referenced by MpegRecorder::ProcessTSPacket().

◆ InitPayload() [1/2]

void TSPacket::InitPayload ( const unsigned char * payload )

inline

Definition at line 228 of file tspacket.h.

◆ InitPayload() [2/2]

void TSPacket::InitPayload	(	const unsigned char *	payload,
		uint	size
	)

inline

Definition at line 234 of file tspacket.h.

◆ AFCOffset()

unsigned int TSPacket::AFCOffset ( void ) const

inline

Definition at line 247 of file tspacket.h.

Referenced by MPEGStreamData::AssemblePSIP(), DTVRecorder::FindH2645Keyframes(), DTVRecorder::FindMPEG2Keyframes(), PSIPTable::InitPESPacket(), and PTSListener::ProcessTSPacket().

◆ StartOfFieldPointer()

unsigned int TSPacket::StartOfFieldPointer ( void ) const

inline

Definition at line 252 of file tspacket.h.

Referenced by MPEGStreamData::AssemblePSIP(), and PSIPTable::InitPESPacket().

◆ SetStartOfFieldPointer()

void TSPacket::SetStartOfFieldPointer ( uint sof )

inline

Definition at line 254 of file tspacket.h.

◆ toString()

QString TSPacket::toString ( void ) const

Definition at line 28 of file tspacket.cpp.

Referenced by MPEGStreamData::ProcessTSPacket().

Friends And Related Function Documentation

◆ PESPacket

friend class PESPacket

friend

Definition at line 207 of file tspacket.h.

Member Data Documentation

◆ kSize

constexpr unsigned int TSPacket::kSize {188}

staticconstexpr

Definition at line 259 of file tspacket.h.

Referenced by FirewireRecorder::AddData(), MPEGStreamData::AssemblePSIP(), FirewireDevice::BroadcastToListeners(), DTVRecorder::BufferedWrite(), DTVRecorder::DTVRecorder(), DTVRecorder::FindH2645Keyframes(), DTVRecorder::FindMPEG2Keyframes(), PESPacket::GetAsTSPackets(), ASIStreamHandler::Open(), MpegRecorder::OpenV4L2DeviceAsInput(), MPEGStreamData::ProcessData(), PTSListener::ProcessTSPacket(), PSIPTable::PSIPTable(), MPEGStreamData::ResyncStream(), V4L2encStreamHandler::run(), DVBStreamHandler::RunTS(), and LinuxFirewireDevice::SetAVStreamBufferSize().

◆ kPayloadSize

constexpr unsigned int TSPacket::kPayloadSize {188-4}

staticconstexpr

Definition at line 260 of file tspacket.h.

Referenced by PESPacket::AddTSPacket(), MPEGStreamData::AssemblePSIP(), ProgramAssociationTable::CreateBlank(), PESPacket::GetAsTSPackets(), and InitPayload().

◆ kDVBEmissionSize

constexpr unsigned int TSPacket::kDVBEmissionSize {204}

staticconstexpr

Definition at line 261 of file tspacket.h.

Referenced by ASIStreamHandler::Open().

◆ kISDBEmissionSize

constexpr unsigned int TSPacket::kISDBEmissionSize {204}

staticconstexpr

Definition at line 262 of file tspacket.h.

◆ k8VSBEmissionSize

constexpr unsigned int TSPacket::k8VSBEmissionSize {208}

staticconstexpr

Definition at line 263 of file tspacket.h.

◆ kNullPacket

const TSPacket * TSPacket::kNullPacket

static

Initial value:

=

reinterpret_cast<const TSPacket*>(NULL_PACKET_BYTES.data())

Definition at line 264 of file tspacket.h.

◆ m_tsPayload

std::array<uint8_t,184> TSPacket::m_tsPayload

private

Definition at line 266 of file tspacket.h.

The documentation for this class was generated from the following files:

mythtv/libs/libmythtv/mpeg/tspacket.h
mythtv/libs/libmythtv/mpeg/tspacket.cpp

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ TSPacket()

Member Function Documentation

◆ CreatePayloadOnlyPacket()

◆ CreateClone()

◆ InitPayload() [1/2]

◆ InitPayload() [2/2]

◆ AFCOffset()

◆ StartOfFieldPointer()

◆ SetStartOfFieldPointer()

◆ toString()

Friends And Related Function Documentation

◆ PESPacket

Member Data Documentation

◆ kSize

◆ kPayloadSize

◆ kDVBEmissionSize

◆ kISDBEmissionSize

◆ k8VSBEmissionSize

◆ kNullPacket

◆ m_tsPayload