ts::CASMapper Class Reference

This class maps PID's with CA system ids. More...

#include <tsCASMapper.h>

Inheritance diagram for ts::CASMapper:

Collaboration diagram for ts::CASMapper:

Public Member Functions
	CASMapper (DuckContext &duck)
	Constructor.
uint16_t	casId (PID pid) const
	Get the CAS id of a CA PID (ECM or EMM).
void	feedPacket (const TSPacket &pkt)
	This method feeds the CAS mapper with a TS packet.
bool	getCADescriptor (PID pid, CADescriptorPtr &desc) const
	Get the CA_descriptor which describes a CA PID (ECM or EMM).
bool	isECM (PID pid) const
	Check if a PID carries ECM's.
bool	isEMM (PID pid) const
	Check if a PID carries EMM's.
bool	knownPID (PID pid) const
	Check if a PID is a known CA PID.
void	reset ()
	Reset the CAS mapper.
void	setCurrentNext (bool current, bool next)
	Filter PSI tables based on current/next indicator.
void	trackInvalidSectionVersions (bool on)
	Track / untrack invalid section version numbers.

Detailed Description

This class maps PID's with CA system ids.

All packets are passed through this object. It tracks the location of all EMM and ECM PID's and records the corresponding CAS attributes.

Constructor & Destructor Documentation

CASMapper()

ts::CASMapper::CASMapper

(

DuckContext &

duck

)

Constructor.

Parameters

[in,out]

duck

TSDuck execution context. The reference is kept inside this object.

Member Function Documentation

feedPacket()

void ts::CASMapper::feedPacket ( const TSPacket &  pkt )

inline

This method feeds the CAS mapper with a TS packet.

Parameters

[in]

pkt

A new transport stream packet.

setCurrentNext()

void ts::CASMapper::setCurrentNext ( bool  current, bool  next  )

inline

Filter PSI tables based on current/next indicator.

Parameters

[in]	current	Use "current" tables. This is true by default.
[in]	next	Use "next" tables. This is false by default.

trackInvalidSectionVersions()

void ts::CASMapper::trackInvalidSectionVersions ( bool  on )

inline

Track / untrack invalid section version numbers.

By default, if a section version does not change, the section is ignored. When this tracking is enabled, the content of the sections are tracked and a table is demuxed when a section version does not change but the content changes. This is considered as an error according to MPEG rules.

Parameters

[in]

on

Track invalid section versions. This is false by default.

knownPID()

bool ts::CASMapper::knownPID ( PID  pid ) const

inline

Check if a PID is a known CA PID.

Parameters

[in]

pid

A PID to check.

Returns

True if @ pid is a known ECM or EMM PID.

casId()

uint16_t ts::CASMapper::casId

(

PID

pid

)

const

Get the CAS id of a CA PID (ECM or EMM).

Parameters

[in]

pid

A PID to check.

Returns

The CAS id or zero if the PID is not known.

isECM()

bool ts::CASMapper::isECM

(

PID

pid

)

const

Check if a PID carries ECM's.

Parameters

[in]

pid

A PID to check.

Returns

True if the PID carries ECM's, false otherwise.

isEMM()

bool ts::CASMapper::isEMM

(

PID

pid

)

const

Check if a PID carries EMM's.

Parameters

[in]

pid

A PID to check.

Returns

True if the PID carries EMM's, false otherwise.

getCADescriptor()

bool ts::CASMapper::getCADescriptor	(	PID	pid,
		CADescriptorPtr &	desc
	)		const

Get the CA_descriptor which describes a CA PID (ECM or EMM).

Parameters

[in]	pid	A PID to check.
[out]	desc	A safe pointer to the associated CA_descriptor.

Returns

True if the CA_descriptor was found, false otherwise.

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

• tsCASMapper.h