Allows us to transform TS packets to PES packets, which are used to hold multimedia streams and very similar to PSIP tables. More...

#include <libmythtv/mpeg/pespacket.h>

Inheritance diagram for PESPacket:

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Collaboration diagram for PESPacket:

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Public Member Functions
	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...

virtual bool	HasCRC () const
	1 bit Cyclic Redundancy Check 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 Attributes
static constexpr uint	kMpegCRCSize { 4 }

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

void	Finalize ()

Protected Attributes
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
static const uint	kTheMagicNoCRCCRC = 0xFFFFFFFF

Detailed Description

Allows us to transform TS packets to PES packets, which are used to hold multimedia streams and very similar to PSIP tables.

See also: PSIPTable, TSPacket

Definition at line 25 of file pespacket.h.

Constructor & Destructor Documentation

◆ PESPacket() [1/4]

PESPacket::PESPacket ( )

protecteddefault

noop constructor, only for use by derived classes

◆ PESPacket() [2/4]

PESPacket::PESPacket ( const unsigned char * pesdata )

inlineexplicit

Definition at line 33 of file pespacket.h.

◆ PESPacket() [3/4]

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

inlineexplicit

Definition at line 40 of file pespacket.h.

◆ PESPacket() [4/4]

PESPacket::PESPacket ( const PESPacket & pkt )

inline

Definition at line 53 of file pespacket.h.

◆ ~PESPacket()

virtual PESPacket::~PESPacket ( )

inlinevirtual

Definition at line 74 of file pespacket.h.

Member Function Documentation

◆ AddTSPacket()

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

Definition at line 20 of file pespacket.cpp.

Referenced by MPEGStreamData::AssemblePSIP().

◆ CalcCRC()

uint PESPacket::CalcCRC ( void ) const

Definition at line 172 of file pespacket.cpp.

Referenced by NetworkInformationTable::Mutate(), ServiceDescriptionTable::Mutate(), FirewireDevice::ProcessPATPacket(), VerifyCRC(), and PSIPTable::VerifyPSIP().

◆ CopyRight()

bool PESPacket::CopyRight ( ) const

inline

1 bit If true packet may contain copy righted material and is known to have once contained materiale with copy rights.

If false packet may contain copy righted material but is not known to have ever contained materiale with copy rights.

Definition at line 113 of file pespacket.h.

◆ CRC()

uint PESPacket::CRC ( void ) const

inline

Definition at line 189 of file pespacket.h.

Referenced by insert_crc(), SCTENetworkInformationTable::toString(), NetworkTextTable::toString(), ShortVirtualChannelTable::toString(), VerifyCRC(), and PSIPTable::VerifyPSIP().

◆ data() [1/2]

unsigned char * PESPacket::data ( )

inline

Definition at line 168 of file pespacket.h.

◆ data() [2/2]

const unsigned char * PESPacket::data ( ) const

inline

Definition at line 167 of file pespacket.h.

Referenced by GetAsTSPackets().

◆ DataAligned()

bool PESPacket::DataAligned ( ) const

inline

1 bit Data alignment indicator (must be 0 for video)

Definition at line 108 of file pespacket.h.

◆ DTS()

uint64_t PESPacket::DTS ( void ) const

inline

Decode Time Stamp, present if HasDTS() is true.

Definition at line 146 of file pespacket.h.

◆ Finalize()

void PESPacket::Finalize ( )

inlineprotected

Definition at line 217 of file pespacket.h.

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

◆ GetAsTSPackets()

void PESPacket::GetAsTSPackets	(	std::vector< TSPacket > &	output,
		uint	cc
	)		const

Returns payload only PESPacket as series of TSPackets.

Definition at line 133 of file pespacket.cpp.

Referenced by DTVRecorder::HandleSingleProgramPAT(), and DTVRecorder::HandleSingleProgramPMT().

◆ HasACI()

bool PESPacket::HasACI ( ) const

inline

1 bit Additional Copy Info field is present

Definition at line 128 of file pespacket.h.

◆ HasCRC()

virtual bool PESPacket::HasCRC ( void ) const

inlinevirtual

1 bit Cyclic Redundancy Check present

Reimplemented in PSIPTable.

Definition at line 130 of file pespacket.h.

Referenced by PESPacket(), and VerifyCRC().

◆ HasDSM()

bool PESPacket::HasDSM ( ) const

inline

1 bit DSM field present (should always be false for broadcasts)

Definition at line 126 of file pespacket.h.

◆ HasDTS()

bool PESPacket::HasDTS ( ) const

inline

1 bit Decoding Time Stamp field is present

Definition at line 120 of file pespacket.h.

◆ HasESCR()

bool PESPacket::HasESCR ( ) const

inline

1 bit Elementary Stream Clock Reference field is present

Definition at line 122 of file pespacket.h.

◆ HasESR()

bool PESPacket::HasESR ( ) const

inline

1 bit Elementary Stream Rate field is present

Definition at line 124 of file pespacket.h.

◆ HasExtensionFlags()

bool PESPacket::HasExtensionFlags ( ) const

inline

1 bit Extension flags are present

Definition at line 132 of file pespacket.h.

◆ HasPTS()

bool PESPacket::HasPTS ( ) const

inline

1 bit Presentation Time Stamp field is present

Definition at line 118 of file pespacket.h.

◆ HighPriority()

bool PESPacket::HighPriority ( ) const

inline

1 bit Indicates if this is a high priority packet

Definition at line 106 of file pespacket.h.

◆ IsClone()

bool PESPacket::IsClone ( ) const

inline

Definition at line 83 of file pespacket.h.

Referenced by AddTSPacket().

◆ IsGood()

bool PESPacket::IsGood ( ) const

inline

Definition at line 88 of file pespacket.h.

Referenced by MPEGStreamData::AssemblePSIP(), and MPEGStreamData::HandleTSTables().

◆ Length()

uint PESPacket::Length ( void ) const

inline

Definition at line 99 of file pespacket.h.

Referenced by AddTSPacket(), CalcCRC(), GetAsTSPackets(), PSIPTable::InitPESPacket(), ShortVirtualChannelTable::Parse(), ServiceDescriptionTable::Parse(), DVBEventInformationTable::Parse(), ProgramMapTable::Parse(), PSIPTable::toString(), PSIPTable::VerifyPSIP(), and PSIPTable::XMLValues().

◆ operator=()

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

delete

◆ OriginalRecording()

bool PESPacket::OriginalRecording ( ) const

inline

1 bit Original Recording

Definition at line 115 of file pespacket.h.

◆ pesdata() [1/2]

unsigned char * PESPacket::pesdata ( )

inline

Definition at line 165 of file pespacket.h.

◆ pesdata() [2/2]

const unsigned char * PESPacket::pesdata ( ) const

inline

Definition at line 164 of file pespacket.h.

Referenced by ProgramMapTable::AppendStream(), MPEGStreamData::AssemblePSIP(), ProgramAssociationTable::Create(), TimeOffsetTable::Descriptors(), TimeOffsetTable::DescriptorsLength(), SpliceInformationTable::Parse(), SCTENetworkInformationTable::Parse(), ShortVirtualChannelTable::Parse(), NetworkInformationTable::Parse(), ServiceDescriptionTable::Parse(), BouquetAssociationTable::Parse(), DVBEventInformationTable::Parse(), VirtualChannelTable::toString(), VirtualChannelTable::toStringXML(), TimeDateTable::UTCdata(), and TimeOffsetTable::UTCdata().

◆ PSIOffset()

uint PESPacket::PSIOffset ( ) const

inline

Definition at line 162 of file pespacket.h.

Referenced by MPEGStreamData::AssemblePSIP().

◆ PTS()

uint64_t PESPacket::PTS ( void ) const

inline

Presentation Time Stamp, present if HasPTS() is true.

Definition at line 135 of file pespacket.h.

◆ ScramblingControl()

uint PESPacket::ScramblingControl ( ) const

inline

Definition at line 103 of file pespacket.h.

◆ SetCRC()

void PESPacket::SetCRC ( uint crc )

inline

Definition at line 200 of file pespacket.h.

Referenced by NetworkInformationTable::Mutate(), and ServiceDescriptionTable::Mutate().

◆ SetLength()

void PESPacket::SetLength ( uint len )

inline

Definition at line 171 of file pespacket.h.

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

◆ SetPSIOffset()

void PESPacket::SetPSIOffset ( uint offset )

inline

Definition at line 183 of file pespacket.h.

Referenced by MPEGStreamData::AssemblePSIP().

◆ SetStreamID()

void PESPacket::SetStreamID ( uint id )

inline

Definition at line 170 of file pespacket.h.

◆ SetTotalLength()

void PESPacket::SetTotalLength ( uint len )

inline

Definition at line 176 of file pespacket.h.

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

◆ StreamID()

uint PESPacket::StreamID ( ) const

inline

Definition at line 98 of file pespacket.h.

Referenced by MPEGStreamData::AssemblePSIP(), and VerifyCRC().

◆ tsheader() [1/2]

TSHeader * PESPacket::tsheader ( )

inline

Definition at line 92 of file pespacket.h.

◆ tsheader() [2/2]

const TSHeader * PESPacket::tsheader ( ) const

inline

Definition at line 90 of file pespacket.h.

Referenced by AddTSPacket(), ProgramMapTable::Create(), MPEGStreamData::CreatePATSingleProgram(), MPEGStreamData::CreatePMTSingleProgram(), ATSCStreamData::DeleteCachedTable(), GetAsTSPackets(), DTVRecorder::HandleSingleProgramPAT(), DTVRecorder::HandleSingleProgramPMT(), EventInformationTable::toString(), and ProgramMapTable::toString().

◆ TSSizeInBuffer()

uint PESPacket::TSSizeInBuffer ( ) const

inline

Definition at line 161 of file pespacket.h.

Referenced by MPEGStreamData::AssemblePSIP().

◆ VerifyCRC() [1/2]

bool PESPacket::VerifyCRC	(	int	cardid,
		int	pid
	)		const

Definition at line 193 of file pespacket.cpp.

◆ VerifyCRC() [2/2]

bool PESPacket::VerifyCRC ( void ) const

Definition at line 180 of file pespacket.cpp.

Referenced by AddTSPacket(), PSIPTable::InitPESPacket(), NetworkInformationTable::Mutate(), and ServiceDescriptionTable::Mutate().

Member Data Documentation

◆ kMpegCRCSize

constexpr uint PESPacket::kMpegCRCSize { 4 }

staticconstexpr

Definition at line 233 of file pespacket.h.

◆ kTheMagicNoCRCCRC

const uint PESPacket::kTheMagicNoCRCCRC = 0xFFFFFFFF

staticprotected

Definition at line 230 of file pespacket.h.

Referenced by CalcCRC().

◆ m_allocSize

uint PESPacket::m_allocSize { 0 }

protected

Total number of bytes we allocated.

Definition at line 225 of file pespacket.h.

Referenced by AddTSPacket(), and PSIPTable::VerifyPSIP().

◆ m_badPacket

bool PESPacket::m_badPacket { false }

protected

true if a CRC is not good yet

Definition at line 226 of file pespacket.h.

Referenced by AddTSPacket(), and PSIPTable::InitPESPacket().

◆ m_ccLast

uint PESPacket::m_ccLast { 255 }

protected

Continuity counter of last inserted TS Packet.

Definition at line 223 of file pespacket.h.

Referenced by AddTSPacket().

◆ m_fullBuffer

unsigned char* PESPacket::m_fullBuffer { nullptr }

protected

Pointer to allocated data.

Definition at line 220 of file pespacket.h.

Referenced by AddTSPacket(), GetAsTSPackets(), PESPacket(), and PSIPTable::VerifyPSIP().

◆ m_pesData

unsigned char* PESPacket::m_pesData { nullptr }

protected

Pointer to PES data in full buffer.

Definition at line 219 of file pespacket.h.

Referenced by AddTSPacket(), CalcCRC(), GetAsTSPackets(), PSIPTable::InitPESPacket(), PESPacket(), and PSIPTable::VerifyPSIP().

◆ m_pesDataSize

uint PESPacket::m_pesDataSize { 0 }

protected

Number of data bytes (TS header + PES data)

Definition at line 224 of file pespacket.h.

Referenced by AddTSPacket(), and PESPacket().

◆ m_psiOffset

uint PESPacket::m_psiOffset { 0 }

protected

AFCOffset + StartOfFieldPointer.

Definition at line 222 of file pespacket.h.

Referenced by AddTSPacket(), and PSIPTable::InitPESPacket().

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

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

Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ PESPacket() [1/4]

◆ PESPacket() [2/4]

◆ PESPacket() [3/4]

◆ PESPacket() [4/4]

◆ ~PESPacket()

Member Function Documentation

◆ AddTSPacket()

◆ CalcCRC()

◆ CopyRight()

◆ CRC()

◆ data() [1/2]

◆ data() [2/2]

◆ DataAligned()

◆ DTS()

◆ Finalize()

◆ GetAsTSPackets()

◆ HasACI()

◆ HasCRC()

◆ HasDSM()

◆ HasDTS()

◆ HasESCR()

◆ HasESR()

◆ HasExtensionFlags()

◆ HasPTS()

◆ HighPriority()

◆ IsClone()

◆ IsGood()

◆ Length()

◆ operator=()

◆ OriginalRecording()

◆ pesdata() [1/2]

◆ pesdata() [2/2]

◆ PSIOffset()

◆ PTS()

◆ ScramblingControl()

◆ SetCRC()

◆ SetLength()

◆ SetPSIOffset()

◆ SetStreamID()

◆ SetTotalLength()

◆ StreamID()

◆ tsheader() [1/2]

◆ tsheader() [2/2]

◆ TSSizeInBuffer()

◆ VerifyCRC() [1/2]

◆ VerifyCRC() [2/2]

Member Data Documentation

◆ kMpegCRCSize

◆ kTheMagicNoCRCCRC

◆ m_allocSize

◆ m_badPacket

◆ m_ccLast

◆ m_fullBuffer

◆ m_pesData

◆ m_pesDataSize

◆ m_psiOffset