Packetization of MPEG sections into Transport Stream packets. More...

#include <tsPacketizer.h>

Inheritance diagram for ts::Packetizer:

[legend]

Collaboration diagram for ts::Packetizer:

Public Member Functions
	Packetizer (const DuckContext &duck, PID pid=PID_NULL, SectionProviderInterface *provider=nullptr)
	Constructor.

virtual	~Packetizer () override
	Destructor.

void	allowHeaderSplit (bool allow)
	Allow or disallow splitting section headers across TS packets.

bool	atSectionBoundary () const
	Check if the packet stream is exactly at a section boundary.

virtual std::ostream &	display (std::ostream &strm) const override
	Display the internal state of the packetizer, mainly for debug.

const DuckContext &	duck () const
	Get a reference to the TSDuck execution context.

virtual bool	getNextPacket (TSPacket &packet) override
	Build the next MPEG packet for the list of items (sections or PES) to pacjetize.

PID	getPID () const
	Get the default PID for subsequent MPEG packets.

bool	headerSplitAllowed () const
	Check if splitting section headers across TS packets is allowed.

uint8_t	nextContinuityCounter () const
	Get the continuity counter value for next MPEG packet.

PacketCounter	packetCount () const
	Get the number of generated TS packets so far.

Report &	report () const
	Get a reference to the debugging report.

virtual void	reset () override
	Reset the packetizer.

SectionCounter	sectionCount () const
	Get the number of completely packetized sections so far.

SectionProviderInterface *	sectionProvider () const
	Get the object which provides MPEG sections when the packetizer needs a new section.

void	setNextContinuityCounter (uint8_t cc)
	Set the continuity counter value for next MPEG packet.

void	setPID (PID pid)
	Set the default PID for subsequent MPEG packets.

void	setSectionProvider (SectionProviderInterface *provider)
	Set the object which provides MPEG sections when the packetizer needs a new section.

Protected Member Functions
void	configurePacket (TSPacket &pkt, bool nullify)
	Configure a TS packet with continuity and PID.

Detailed Description

Packetization of MPEG sections into Transport Stream packets.

Sections are provided by an object implementing SectionProviderInterface.

Constructor & Destructor Documentation

◆ Packetizer()

ts::Packetizer::Packetizer	(	const DuckContext &	duck,
		PID	pid = `PID_NULL`,
		SectionProviderInterface *	provider = `nullptr`
	)

Constructor.

Parameters

[in]	duck	TSDuck execution context. The reference is kept inside the packetizer.
[in]	pid	PID for generated TS packets.
[in]	provider	An object which will be called each time a section is required.

Member Function Documentation

◆ setSectionProvider()

void ts::Packetizer::setSectionProvider ( SectionProviderInterface * provider )

inline

Set the object which provides MPEG sections when the packetizer needs a new section.

Parameters

[in] provider An object which will be called each time a section is required.

◆ sectionProvider()

SectionProviderInterface * ts::Packetizer::sectionProvider ( ) const

inline

Get the object which provides MPEG sections when the packetizer needs a new section.

Returns: The object which will be called each time a section is required.

◆ atSectionBoundary()

bool ts::Packetizer::atSectionBoundary ( ) const

inline

Check if the packet stream is exactly at a section boundary.

Returns: True if the last returned packet contained the end of a section and no unfinished section.

◆ sectionCount()

SectionCounter ts::Packetizer::sectionCount ( ) const

inline

Get the number of completely packetized sections so far.

Returns: The number of completely packetized sections so far.

◆ allowHeaderSplit()

void ts::Packetizer::allowHeaderSplit ( bool allow )

inline

Allow or disallow splitting section headers across TS packets.

By default, a Packetizer never splits a section header between two TS packets. This is not required by the MPEG standard but some STB are known to have problems with that.

Parameters

[in] allow If true, splitting section headers across TS packets is allowed.

◆ headerSplitAllowed()

bool ts::Packetizer::headerSplitAllowed ( ) const

inline

Check if splitting section headers across TS packets is allowed.

Returns: True if splitting section headers across TS packets is allowed.

◆ reset()

virtual void ts::Packetizer::reset ( )

overridevirtual

Reset the packetizer.

All unfinished items (sections or PES packets) are dropped.

Reimplemented from ts::AbstractPacketizer.

Reimplemented in ts::CyclingPacketizer.

◆ getNextPacket()

virtual bool ts::Packetizer::getNextPacket ( TSPacket & packet )

overridevirtual

Build the next MPEG packet for the list of items (sections or PES) to pacjetize.

If there is nothing to packetize, generate a null packet on PID_NULL.

Parameters

[out] packet The next TS packet.

Returns: True if a real packet is returned, false if a null packet was returned.

Implements ts::AbstractPacketizer.

◆ display()

virtual std::ostream & ts::Packetizer::display ( std::ostream & strm ) const

overridevirtual

Display the internal state of the packetizer, mainly for debug.

Parameters

[in,out] strm Output text stream.

Returns: A reference to strm.

Reimplemented from ts::AbstractPacketizer.

Reimplemented in ts::CyclingPacketizer.

◆ setPID()

void ts::AbstractPacketizer::setPID ( PID pid )

inlineinherited

Set the default PID for subsequent MPEG packets.

Parameters

[in] pid PID for generated TS packets.

◆ getPID()

PID ts::AbstractPacketizer::getPID ( ) const

inlineinherited

Get the default PID for subsequent MPEG packets.

Returns: PID for generated TS packets.

◆ setNextContinuityCounter()

void ts::AbstractPacketizer::setNextContinuityCounter ( uint8_t cc )

inlineinherited

Set the continuity counter value for next MPEG packet.

This counter is automatically incremented at each packet. It is usually never a good idea to change this, except maybe before generating the first packet if the continuity must be preserved with the previous content of the PID.

Parameters

[in] cc Next continuity counter.

◆ nextContinuityCounter()

uint8_t ts::AbstractPacketizer::nextContinuityCounter ( ) const

inlineinherited

Get the continuity counter value for next MPEG packet.

Returns: Next continuity counter.

◆ packetCount()

PacketCounter ts::AbstractPacketizer::packetCount ( ) const

inlineinherited

Get the number of generated TS packets so far.

Returns: The number of generated TS packets so far.

◆ report()

Report & ts::AbstractPacketizer::report ( ) const

inlineinherited

Get a reference to the debugging report.

Returns: A reference to the debugging report.

◆ duck()

const DuckContext & ts::AbstractPacketizer::duck ( ) const

inlineinherited

Get a reference to the TSDuck execution context.

Returns: A reference to the TSDuck execution context.

◆ configurePacket()

void ts::AbstractPacketizer::configurePacket	(	TSPacket &	pkt,
		bool	nullify
	)

protectedinherited

Configure a TS packet with continuity and PID.

Also increment the number of generated packet. So this method must be called exactly once per packet.

Parameters

[in,out]	pkt	TS packet to configure
[in]	nullify	Return a null packet instead (no data to return for now).

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

tsPacketizer.h

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ Packetizer()

Member Function Documentation

◆ setSectionProvider()

◆ sectionProvider()

◆ atSectionBoundary()

◆ sectionCount()

◆ allowHeaderSplit()

◆ headerSplitAllowed()

◆ reset()

◆ getNextPacket()

◆ display()

◆ setPID()

◆ getPID()

◆ setNextContinuityCounter()

◆ nextContinuityCounter()

◆ packetCount()

◆ report()

◆ duck()

◆ configurePacket()