The Program Association Table lists all the programs in a stream, and is always found on PID 0. More...

#include <libmythtv/mpeg/mpegtables.h>

Inheritance diagram for ProgramAssociationTable:

Collaboration diagram for ProgramAssociationTable:

Public Member Functions
	ProgramAssociationTable (const ProgramAssociationTable &table)

	ProgramAssociationTable (const PSIPTable &table)

uint	TransportStreamID (void) const

uint	ProgramCount (void) const

uint	ProgramNumber (uint i) const

uint	ProgramPID (uint i) const

void	SetTranportStreamID (uint gtsid)

uint	FindPID (uint progNum) const

uint	FindAnyPID (void) const

uint	FindProgram (uint pid) const

QString	toString (void) const override

QString	toStringXML (uint indent_level) const override

Public Member Functions inherited from PSIPTable
	PSIPTable (const TSPacket &tspacket, const unsigned char *pesdata, uint pes_size)

	PSIPTable (const unsigned char *pesdata)
	Constructor for viewing a section, does not create it's own data. More...

	PSIPTable (const std::vector< uint8_t > &pesdata)

	PSIPTable (const PSIPTable &)=default

	PSIPTable (const PESPacket &table)

	PSIPTable (const TSPacket &table)

uint	TableID (void) const

bool	SectionSyntaxIndicator (void) const

bool	PrivateIndicator (void) const

uint	SectionLength (void) const

uint	SectionLengthRaw (void) const

uint	TableIDExtension (void) const

uint	Version (void) const

bool	IsCurrent (void) const

uint	Section (void) const

uint	LastSection (void) const

uint	ATSCProtocolVersion (void) const

const unsigned char *	psipdata (void) const

unsigned char *	psipdata (void)

void	SetTableID (uint id)

void	SetSectionLength (uint length)

void	SetTableIDExtension (uint len)

void	SetVersionNumber (uint ver)

void	SetCurrent (bool cur)

void	SetSection (uint num)

void	SetLastSection (uint num)

void	SetATSCProtocolVersion (int ver)

bool	HasCRC (void) const override
	1 bit Cyclic Redundancy Check present More...

bool	HasSectionNumber (void) const

bool	VerifyPSIP (bool verify_crc) const

Public Member Functions inherited from PESPacket
	PESPacket (const unsigned char *pesdata)

	PESPacket (const std::vector< uint8_t > &pesdata)

PESPacket &	operator= (const PESPacket &pkt)=delete

	PESPacket (const PESPacket &pkt)

virtual	~PESPacket ()

bool	IsClone () const

bool	AddTSPacket (const TSPacket *tspacket, int cardid, bool &broken)

bool	IsGood () const

const TSHeader *	tsheader () const

TSHeader *	tsheader ()

void	GetAsTSPackets (std::vector< TSPacket > &output, uint cc) const
	Returns payload only PESPacket as series of TSPackets. More...

uint	StreamID () const

uint	Length () const

uint	ScramblingControl () const

bool	HighPriority () const
	1 bit Indicates if this is a high priority packet More...

bool	DataAligned () const
	1 bit Data alignment indicator (must be 0 for video) More...

bool	CopyRight () const
	1 bit If true packet may contain copy righted material and is known to have once contained materiale with copy rights. More...

bool	OriginalRecording () const
	1 bit Original Recording More...

bool	HasPTS () const
	1 bit Presentation Time Stamp field is present More...

bool	HasDTS () const
	1 bit Decoding Time Stamp field is present More...

bool	HasESCR () const
	1 bit Elementary Stream Clock Reference field is present More...

bool	HasESR () const
	1 bit Elementary Stream Rate field is present More...

bool	HasDSM () const
	1 bit DSM field present (should always be false for broadcasts) More...

bool	HasACI () const
	1 bit Additional Copy Info field is present More...

bool	HasExtensionFlags () const
	1 bit Extension flags are present More...

uint64_t	PTS (void) const
	Presentation Time Stamp, present if HasPTS() is true. More...

uint64_t	DTS (void) const
	Decode Time Stamp, present if HasDTS() is true. More...

uint	TSSizeInBuffer () const

uint	PSIOffset () const

const unsigned char *	pesdata () const

unsigned char *	pesdata ()

const unsigned char *	data () const

unsigned char *	data ()

void	SetStreamID (uint id)

void	SetLength (uint len)

void	SetTotalLength (uint len)

void	SetPSIOffset (uint offset)

uint	CRC (void) const

void	SetCRC (uint crc)

uint	CalcCRC (void) const

bool	VerifyCRC (void) const

bool	VerifyCRC (int cardid, int pid) const

Static Public Member Functions
static ProgramAssociationTable *	Create (uint tsid, uint version, const std::vector< uint > &pnum, const std::vector< uint > &pid)

Static Public Member Functions inherited from PSIPTable
static PSIPTable	View (const TSPacket &tspacket)

static PSIPTable	ViewData (const unsigned char *pesdata)

Static Private Member Functions
static ProgramAssociationTable *	CreateBlank (bool smallPacket=true)

Friends
class	TestMPEGTables

Additional Inherited Members
Static Public Attributes inherited from PSIPTable
static const uint	kPsipOffset = 8

Static Public Attributes inherited from PESPacket
static constexpr uint	kMpegCRCSize { 4 }

Protected Member Functions inherited from PSIPTable
	PSIPTable (const TSPacket &tspacket, bool)

QString	XMLValues (uint indent_level) const

Protected Member Functions inherited from PESPacket
	PESPacket ()=default
	noop constructor, only for use by derived classes More...

void	Finalize ()

Protected Attributes inherited from PESPacket
unsigned char *	m_pesData { nullptr }
	Pointer to PES data in full buffer. More...

unsigned char *	m_fullBuffer { nullptr }
	Pointer to allocated data. More...

uint	m_psiOffset { 0 }
	AFCOffset + StartOfFieldPointer. More...

uint	m_ccLast { 255 }
	Continuity counter of last inserted TS Packet. More...

uint	m_pesDataSize { 0 }
	Number of data bytes (TS header + PES data) More...

uint	m_allocSize { 0 }
	Total number of bytes we allocated. More...

bool	m_badPacket { false }
	true if a CRC is not good yet More...

Static Protected Attributes inherited from PESPacket
static const uint	kTheMagicNoCRCCRC = 0xFFFFFFFF

Detailed Description

The Program Association Table lists all the programs in a stream, and is always found on PID 0.

Based on info in this table and the ProgramMapTable for the program we are interested in we should be able determine which PID to write to the ringbuffer when given the program stream to record.

NOTE: Broadcasters are encouraged to keep the subprogram:PID mapping constant. If we store this data in the channel database, we can branch-predict which PIDs we are looking for, and can thus "tune" the subprogram more quickly.

See also: ProgramMapTable

Definition at line 617 of file mpegtables.h.

Constructor & Destructor Documentation

◆ ProgramAssociationTable() [1/2]

ProgramAssociationTable::ProgramAssociationTable ( const ProgramAssociationTable & table )

inline

Definition at line 620 of file mpegtables.h.

Referenced by CreateBlank().

◆ ProgramAssociationTable() [2/2]

ProgramAssociationTable::ProgramAssociationTable ( const PSIPTable & table )

inlineexplicit

Definition at line 626 of file mpegtables.h.

Member Function Documentation

◆ Create()

ProgramAssociationTable * ProgramAssociationTable::Create	(	uint	tsid,
		uint	version,
		const std::vector< uint > &	pnum,
		const std::vector< uint > &	pid
	)

static

Definition at line 346 of file mpegtables.cpp.

Referenced by MPEGStreamData::CreatePATSingleProgram(), and DTVChannel::SetChannelByString().

◆ TransportStreamID()

uint ProgramAssociationTable::TransportStreamID ( void ) const

inline

Definition at line 636 of file mpegtables.h.

Referenced by MPEGStreamData::CachePAT(), FirewireSignalMonitor::HandlePAT(), DTVSignalMonitor::HandlePAT(), toString(), and toStringXML().

◆ ProgramCount()

uint ProgramAssociationTable::ProgramCount ( void ) const

inline

Definition at line 638 of file mpegtables.h.

Referenced by DTVRecorder::HandlePAT(), DTVSignalMonitor::HandlePAT(), ChannelScanSM::HandlePAT(), toString(), and toStringXML().

◆ ProgramNumber()

uint ProgramAssociationTable::ProgramNumber ( uint i ) const

inline

Definition at line 645 of file mpegtables.h.

Referenced by DTVRecorder::HandlePAT(), DTVSignalMonitor::HandlePAT(), V4L2encRecorder::run(), ExternalRecorder::run(), ASIRecorder::run(), toString(), and toStringXML().

◆ ProgramPID()

uint ProgramAssociationTable::ProgramPID ( uint i ) const

inline

Definition at line 648 of file mpegtables.h.

Referenced by DTVRecorder::HandlePAT(), DTVSignalMonitor::HandlePAT(), ChannelScanSM::HandlePAT(), V4L2encRecorder::run(), ExternalRecorder::run(), ASIRecorder::run(), toString(), and toStringXML().

◆ SetTranportStreamID()

void ProgramAssociationTable::SetTranportStreamID ( uint gtsid )

inline

Definition at line 654 of file mpegtables.h.

Referenced by Create().

◆ FindPID()

uint ProgramAssociationTable::FindPID ( uint progNum ) const

inline

Definition at line 657 of file mpegtables.h.

Referenced by MPEGStreamData::CreatePATSingleProgram(), DTVRecorder::HandlePAT(), DTVSignalMonitor::HandlePAT(), MPEGStreamData::ProcessPAT(), and MPEGStreamData::SetDesiredProgram().

◆ FindAnyPID()

uint ProgramAssociationTable::FindAnyPID ( void ) const

inline

Definition at line 664 of file mpegtables.h.

Referenced by MPEGStreamData::CreatePATSingleProgram().

◆ FindProgram()

uint ProgramAssociationTable::FindProgram ( uint pid ) const

inline

Definition at line 671 of file mpegtables.h.

◆ toString()

QString ProgramAssociationTable::toString ( void ) const

overridevirtual

Reimplemented from PSIPTable.

Definition at line 815 of file mpegtables.cpp.

Referenced by MPEGStreamData::CreatePATSingleProgram(), DTVSignalMonitor::HandlePAT(), and ChannelScanSM::HandlePAT().

◆ toStringXML()

QString ProgramAssociationTable::toStringXML ( uint indent_level ) const

overridevirtual

Reimplemented from PSIPTable.

Definition at line 853 of file mpegtables.cpp.

◆ CreateBlank()

ProgramAssociationTable * ProgramAssociationTable::CreateBlank ( bool smallPacket = true )

staticprivate

Definition at line 331 of file mpegtables.cpp.

Referenced by Create().

Friends And Related Function Documentation

◆ TestMPEGTables

friend class TestMPEGTables

friend

Definition at line 686 of file mpegtables.h.

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

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

Public Member Functions

Static Public Member Functions

Static Private Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ProgramAssociationTable() [1/2]

◆ ProgramAssociationTable() [2/2]

Member Function Documentation

◆ Create()

◆ TransportStreamID()

◆ ProgramCount()

◆ ProgramNumber()

◆ ProgramPID()

◆ SetTranportStreamID()

◆ FindPID()

◆ FindAnyPID()

◆ FindProgram()

◆ toString()

◆ toStringXML()

◆ CreateBlank()

Friends And Related Function Documentation

◆ TestMPEGTables