Basic definition of an MPEG-2 transport packet. More...

Public Member Functions
void	clearPriority ()
	Clear the transport_priority - 1 bit. More...

void	clearPusi ()
	Clear the payload_unit_start_indicator (PUSI) - 1 bit. More...

void	clearTei ()
	Clear the transport_error_indicator (TEI) - 1 bit. More...

int	getAdaptationFieldSize () const
	Compute the adaptation_field (AF) size in bytes. More...

quint8	getCc () const
	Extract the continuity_counter (CC) - 4 bits. More...

bool	getDiscontinuityIndicator () const
	Check if packet has a discontinuity_indicator set - 1 bit. More...

quint64	getDts () const
	Get the DTS - 33 bits. More...

bool	getEspi () const
	Check if packet has a elementary_stream_priority_indicator (ESPI) set - 1 bit. More...

int	getHeaderSize () const
	Compute the size of the TS header (ie. More...

quint64	getOpcr () const
	Get the Original Program Clock Reference (OPCR) - 42 bits. More...

const quint8 *	getPayload () const
	Get payload start address inside this object. More...

quint8 *	getPayload ()
	Get payload start address inside this object. More...

int	getPayloadSize () const
	Compute the payload size. More...

quint64	getPcr () const
	Get the Program Clock Reference (PCR) - 42 bits. More...

QtsPid	getPid () const
	Extract the PID - 13 bits. More...

bool	getPriority () const
	Extract the transport_priority - 1 bit. More...

quint64	getPts () const
	Get the PTS - 33 bits. More...

bool	getPusi () const
	Extract the payload_unit_start_indicator (PUSI) - 1 bit. More...

bool	getRandomAccessIndicator () const
	Check if packet has a random_access_indicator set - 1 bit. More...

quint8	getScrambling () const
	Extract the transport_scrambling_control - 2 bits. More...

bool	getTei () const
	Extract the transport_error_indicator (TEI) - 1 bit. More...

bool	hasAdaptationField () const
	Check if the packet has an adaptation_field (AF). More...

bool	hasDTS () const
	Check if the TS packet contains a Decoding Time Stamp (DTS). More...

bool	hasOpcr () const
	Check if packet has an Original Program Clock Reference (OPCR). More...

bool	hasPayload () const
	Check if the packet has a payload. More...

bool	hasPcr () const
	Check if packet has a Program Clock Reference (PCR). More...

bool	hasPts () const
	Check if the TS packet contains a Presentation Time Stamp (PTS). More...

bool	hasValidSync () const
	Check if the sync byte is valid in the packet. More...

bool	isClear () const
	Check if the packet is clear. More...

bool	isScrambled () const
	Check if the packet is scrambled. More...

bool	operator!= (const QtsTsPacket &p) const
	Difference operator. More...

const QtsTsPacket &	operator= (const QtsTsPacket &p)
	Assigment operator. More...

bool	operator== (const QtsTsPacket &p) const
	Comparison operator. More...

void	setCc (quint8 cc)
	Set the continuity_counter (CC) - 4 bits. More...

void	setOpcr (const quint64 &opcr)
	Replace the Original Program Clock Reference (OPCR) value - 42 bits. More...

void	setPcr (const quint64 &pcr)
	Replace the Program Clock Reference (PCR) value - 42 bits. More...

void	setPid (QtsPid pid)
	Set the PID - 13 bits. More...

void	setPriority ()
	Set the transport_priority - 1 bit. More...

void	setPusi ()
	Set the payload_unit_start_indicator (PUSI) - 1 bit. More...

void	setScrambling (quint8 sc)
	Set the transport_scrambling_control - 2 bits. More...

void	setTei ()
	Set the transport_error_indicator (TEI) - 1 bit. More...

bool	startPes () const
	Check if the packet contains the start of a clear PES header. More...

Static Public Member Functions
static void	sanityCheck ()
	Sanity check routine. More...

Public Attributes
quint8	b [QTS_PKT_SIZE]
	Public content is a byte array. More...

Private Member Functions
int	dtsOffset () const
	Compute the offset of DTS. More...

quint64	getPdts (int offset) const
	Get the PTS or DTS at specified offset. More...

int	opcrOffset () const
	Compute the offset of OPCR. More...

int	pcrOffset () const
	Compute the offset of PCR. More...

int	ptsOffset () const
	Compute the offset of PTS. More...

Detailed Description

Basic definition of an MPEG-2 transport packet.

The binary representation of this object is exactly 188 bytes. Arrays of QtsTsPacket can be mapped on transport stream data buffers.

Member Function Documentation

◆ operator=()

const QtsTsPacket& QtsTsPacket::operator= ( const QtsTsPacket & p )

inline

Assigment operator.

Parameters

p	Other instance to assign.

Returns: A reference to this object.

◆ operator==()

bool QtsTsPacket::operator== ( const QtsTsPacket & p ) const

inline

Comparison operator.

Parameters

p	Other instance to compare with.

Returns: True if both packets have same content, false otherwise.

◆ operator!=()

bool QtsTsPacket::operator!= ( const QtsTsPacket & p ) const

inline

Difference operator.

Parameters

p	Other instance to compare with.

Returns: True if packets have distinct contents, false otherwise.

◆ hasValidSync()

bool QtsTsPacket::hasValidSync ( ) const

inline

Check if the sync byte is valid in the packet.

Returns: True if the sync byte is valid.

◆ getPid()

QtsPid QtsTsPacket::getPid ( ) const

inline

Extract the PID - 13 bits.

Returns: The PID of the packet.

◆ setPid()

void QtsTsPacket::setPid ( QtsPid pid )

inline

Set the PID - 13 bits.

Parameters

[in] pid The PID of the packet.

◆ getPusi()

bool QtsTsPacket::getPusi ( ) const

inline

Extract the payload_unit_start_indicator (PUSI) - 1 bit.

Returns: True if the PUSI is set, false otherwise.

◆ clearPusi()

void QtsTsPacket::clearPusi ( )

inline

Clear the payload_unit_start_indicator (PUSI) - 1 bit.

◆ setPusi()

void QtsTsPacket::setPusi ( )

inline

Set the payload_unit_start_indicator (PUSI) - 1 bit.

◆ getTei()

bool QtsTsPacket::getTei ( ) const

inline

Extract the transport_error_indicator (TEI) - 1 bit.

Returns: True if the TEI is set, false otherwise.

◆ clearTei()

void QtsTsPacket::clearTei ( )

inline

Clear the transport_error_indicator (TEI) - 1 bit.

◆ setTei()

void QtsTsPacket::setTei ( )

inline

Set the transport_error_indicator (TEI) - 1 bit.

◆ getPriority()

bool QtsTsPacket::getPriority ( ) const

inline

Extract the transport_priority - 1 bit.

Returns: True if the transport_priority is set, false otherwise.

◆ clearPriority()

void QtsTsPacket::clearPriority ( )

inline

Clear the transport_priority - 1 bit.

◆ setPriority()

void QtsTsPacket::setPriority ( )

inline

Set the transport_priority - 1 bit.

◆ getScrambling()

quint8 QtsTsPacket::getScrambling ( ) const

inline

Extract the transport_scrambling_control - 2 bits.

Returns: The transport_scrambling_control value.

◆ isClear()

bool QtsTsPacket::isClear ( ) const

inline

Check if the packet is clear.

Returns: True if the packet is clear, false if it is scrambled.

◆ isScrambled()

bool QtsTsPacket::isScrambled ( ) const

inline

Check if the packet is scrambled.

Returns: True if the packet is scrambled, false if it is clear.

◆ setScrambling()

void QtsTsPacket::setScrambling ( quint8 sc )

inline

Set the transport_scrambling_control - 2 bits.

Parameters

[in] sc The transport_scrambling_control value.

◆ getCc()

quint8 QtsTsPacket::getCc ( ) const

inline

Extract the continuity_counter (CC) - 4 bits.

Returns: The continuity_counter value.

◆ setCc()

void QtsTsPacket::setCc ( quint8 cc )

inline

Set the continuity_counter (CC) - 4 bits.

Parameters

[in] cc The continuity_counter value.

◆ hasAdaptationField()

bool QtsTsPacket::hasAdaptationField ( ) const

inline

Check if the packet has an adaptation_field (AF).

Returns: True if the packet has an adaptation_field, false otherwise.

◆ getAdaptationFieldSize()

int QtsTsPacket::getAdaptationFieldSize ( ) const

inline

Compute the adaptation_field (AF) size in bytes.

Returns: Adaptation field size in bytes (zero if there is no adaptation field).

◆ getHeaderSize()

int QtsTsPacket::getHeaderSize ( ) const

inline

Compute the size of the TS header (ie.

index to TS payload).

Returns: The size of the TS header (ie. index to TS payload).

◆ hasPayload()

bool QtsTsPacket::hasPayload ( ) const

inline

Check if the packet has a payload.

Returns: True if the packet has a payload, false otherwise.

◆ getPayload() [1/2]

const quint8* QtsTsPacket::getPayload ( ) const

inline

Get payload start address inside this object.

Returns: The payload start address inside this object.

◆ getPayload() [2/2]

quint8* QtsTsPacket::getPayload ( )

inline

Get payload start address inside this object.

Returns: The payload start address inside this object.

◆ getPayloadSize()

int QtsTsPacket::getPayloadSize ( ) const

inline

Compute the payload size.

Returns: The payload size in bytes.

◆ getDiscontinuityIndicator()

bool QtsTsPacket::getDiscontinuityIndicator ( ) const

inline

Check if packet has a discontinuity_indicator set - 1 bit.

Returns: True if the packet has a discontinuity_indicator set, false otherwise.

◆ getRandomAccessIndicator()

bool QtsTsPacket::getRandomAccessIndicator ( ) const

inline

Check if packet has a random_access_indicator set - 1 bit.

Returns: True if the packet has a random_access_indicator set, false otherwise.

◆ getEspi()

bool QtsTsPacket::getEspi ( ) const

inline

Check if packet has a elementary_stream_priority_indicator (ESPI) set - 1 bit.

Returns: True if the packet has a elementary_stream_priority_indicator (ESPI) set, false otherwise.

◆ hasPcr()

bool QtsTsPacket::hasPcr ( ) const

inline

Check if packet has a Program Clock Reference (PCR).

Returns: True if the packet has a Program Clock Reference (PCR), false otherwise.

◆ hasOpcr()

bool QtsTsPacket::hasOpcr ( ) const

inline

Check if packet has an Original Program Clock Reference (OPCR).

Returns: True if the packet has an Original Program Clock Reference (OPCR), false otherwise.

◆ getPcr()

quint64 QtsTsPacket::getPcr ( ) const

Get the Program Clock Reference (PCR) - 42 bits.

Returns: PCR value or zero if not found.

◆ getOpcr()

quint64 QtsTsPacket::getOpcr ( ) const

Get the Original Program Clock Reference (OPCR) - 42 bits.

Returns: OPCR value or zero if not found.

◆ setPcr()

void QtsTsPacket::setPcr ( const quint64 & pcr )

Replace the Program Clock Reference (PCR) value - 42 bits.

Do nothing if the packet has not PCR.

Parameters

pcr	PCR value to replace.

◆ setOpcr()

void QtsTsPacket::setOpcr ( const quint64 & opcr )

Replace the Original Program Clock Reference (OPCR) value - 42 bits.

Do nothing if the packet has not OPCR.

Parameters

opcr	OPCR value to replace.

◆ startPes()

bool QtsTsPacket::startPes ( ) const

Check if the packet contains the start of a clear PES header.

Returns: True if the packet contains the start of a clear PES header, false otherwise.

◆ hasPts()

bool QtsTsPacket::hasPts ( ) const

inline

Check if the TS packet contains a Presentation Time Stamp (PTS).

Technically, the PTS and DTS are part of the PES packet, not the TS packet. If the TS packet is the first TS packet of a PES packet, it is possible that the PTS and/or DTS are present in the PES packet but outside the first TS packet. This is possible but rare. So, we provide here a fast way of getting PTS and/or DTS from the TS packet if available.

Returns: True if the TS packet contains a Presentation Time Stamp (PTS).

◆ hasDTS()

bool QtsTsPacket::hasDTS ( ) const

inline

Check if the TS packet contains a Decoding Time Stamp (DTS).

Returns: True if the TS packet contains a Decoding Time Stamp (DTS).

See also: hasPts()

◆ getPts()

quint64 QtsTsPacket::getPts ( ) const

inline

Get the PTS - 33 bits.

Returns: The PTS value or zero if there is none.

See also: hasPts()

◆ getDts()

quint64 QtsTsPacket::getDts ( ) const

inline

Get the DTS - 33 bits.

Returns: The DTS value or zero if there is none.

See also: hasPts(); hasDts()

◆ sanityCheck()

void QtsTsPacket::sanityCheck ( )

static

Sanity check routine.

Ensure that the QtsTsPacket structure can be used in contiguous memory array and array of packets. Crash the application if this is not the case. Can be used once at startup time in paranoid applications.

◆ pcrOffset()

int QtsTsPacket::pcrOffset ( ) const

private

Compute the offset of PCR.

Returns: PCR offset in packet or zero if there is none.

◆ opcrOffset()

int QtsTsPacket::opcrOffset ( ) const

private

Compute the offset of OPCR.

Returns: OPCR offset in packet or zero if there is none.

◆ ptsOffset()

int QtsTsPacket::ptsOffset ( ) const

private

Compute the offset of PTS.

Returns: PTS offset in packet or zero if there is none.

◆ dtsOffset()

int QtsTsPacket::dtsOffset ( ) const

private

Compute the offset of DTS.

Returns: DTS offset in packet or zero if there is none.

◆ getPdts()

quint64 QtsTsPacket::getPdts ( int offset ) const

private

Get the PTS or DTS at specified offset.

Parameters

[in] offset Offset in packet.

Returns: A PTS/DTS value or zero if offset is zero.

Member Data Documentation

◆ b

quint8 QtsTsPacket::b[QTS_PKT_SIZE]

Public content is a byte array.

This byte array exactly fills the memory area of a transport packet. This is why arrays of QtsTsPacket can be mapped on transport stream data buffers.

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

Public Member Functions

Static Public Member Functions

Public Attributes

Private Member Functions

Detailed Description

Member Function Documentation

◆ operator=()

◆ operator==()

◆ operator!=()

◆ hasValidSync()

◆ getPid()

◆ setPid()

◆ getPusi()

◆ clearPusi()

◆ setPusi()

◆ getTei()

◆ clearTei()

◆ setTei()

◆ getPriority()

◆ clearPriority()

◆ setPriority()

◆ getScrambling()

◆ isClear()

◆ isScrambled()

◆ setScrambling()

◆ getCc()

◆ setCc()

◆ hasAdaptationField()

◆ getAdaptationFieldSize()

◆ getHeaderSize()

◆ hasPayload()

◆ getPayload() [1/2]

◆ getPayload() [2/2]

◆ getPayloadSize()

◆ getDiscontinuityIndicator()

◆ getRandomAccessIndicator()

◆ getEspi()

◆ hasPcr()

◆ hasOpcr()

◆ getPcr()

◆ getOpcr()

◆ setPcr()

◆ setOpcr()

◆ startPes()

◆ hasPts()

◆ hasDTS()

◆ getPts()

◆ getDts()

◆ sanityCheck()

◆ pcrOffset()

◆ opcrOffset()

◆ ptsOffset()

◆ dtsOffset()

◆ getPdts()

Member Data Documentation

◆ b