ts::LogicalChannelNumbers Class Reference

A multi-standard storage of Logical Channel Numbers (LCN). More...

#include <tsLogicalChannelNumbers.h>

Public Member Functions
	LogicalChannelNumbers (DuckContext &duck)
	Constructor.
size_t	addFromDescriptors (const DescriptorList &descs, uint16_t ts_id, uint16_t onet_id=0xFFFF)
	Collect all LCN which are declared in a list of descriptors.
size_t	addFromNIT (const NIT &nit, uint16_t ts_id=0xFFFF, uint16_t onet_id=0xFFFF)
	Collect all LCN which are declared in a NIT.
void	addLCN (uint16_t lcn, uint16_t srv_id, uint16_t ts_id, uint16_t onet_id, bool visible=true)
	Add the logical channel number of a service.
void	clear ()
	Clear the content of the LCN store.
bool	empty () const
	Check if the LCN store is empty.
uint16_t	getLCN (const ServiceIdTriplet &srv) const
	Get the logical channel number of a service.
uint16_t	getLCN (uint16_t srv_id, uint16_t ts_id, uint16_t onet_id=0xFFFF) const
	Get the logical channel number of a service.
bool	getVisible (const ServiceIdTriplet &srv) const
	Get the visible flag of a service.
bool	getVisible (uint16_t srv_id, uint16_t ts_id, uint16_t onet_id=0xFFFF) const
	Get the visible flag of a service.
size_t	size () const
	Get the number of services in the LCN store.
bool	updateService (Service &srv, bool replace) const
	Update a service description with its LCN.
template<class CONTAINER >
void	updateServices (CONTAINER &services, Replacement rep) const
	Update a list of service descriptions with LCN's.

Detailed Description

A multi-standard storage of Logical Channel Numbers (LCN).

Logical Channel Numbers (LCN) are an important data for operators and users. However, there is not standard way to define them in the signalization. Several private descriptors exist. This class is a store of LCN values which can be collected from many type of tables.

Constructor & Destructor Documentation

LogicalChannelNumbers()

ts::LogicalChannelNumbers::LogicalChannelNumbers

(

DuckContext &

duck

)

Constructor.

Parameters

[in,out]

duck

TSDuck execution context.

Member Function Documentation

empty()

bool ts::LogicalChannelNumbers::empty ( ) const

inline

Check if the LCN store is empty.

Returns

True if the LCN store is empty.

size()

size_t ts::LogicalChannelNumbers::size ( ) const

inline

Get the number of services in the LCN store.

Returns

The number of services in the LCN store.

addLCN()

void ts::LogicalChannelNumbers::addLCN	(	uint16_t	lcn,
		uint16_t	srv_id,
		uint16_t	ts_id,
		uint16_t	onet_id,
		bool	visible = true
	)

Add the logical channel number of a service.

Parameters

[in]	lcn	The logical channel number to add.
[in]	srv_id	The service id.
[in]	ts_id	The transport stream id.
[in]	onet_id	The original network id. Use 0xFFFF for "unspecified".
[in]	visible	The service LCN is visible.

addFromNIT()

size_t ts::LogicalChannelNumbers::addFromNIT	(	const NIT &	nit,
		uint16_t	ts_id = 0xFFFF,
		uint16_t	onet_id = 0xFFFF
	)

Collect all LCN which are declared in a NIT.

Parameters

[in]	nit	The NIT to analyze.
[in]	ts_id	If not 0xFFFF, get services from that TS id only.
[in]	onet_id	If not 0xFFFF, get services from that original network id only.

Returns

The number of collected LCN.

addFromDescriptors()

size_t ts::LogicalChannelNumbers::addFromDescriptors	(	const DescriptorList &	descs,
		uint16_t	ts_id,
		uint16_t	onet_id = 0xFFFF
	)

Collect all LCN which are declared in a list of descriptors.

Parameters

[in]	descs	The list of descriptors to analyze.
[in]	ts_id	The transport stream id of all services.
[in]	onet_id	The original network id to use. If set to 0xFFFF (the default), leave it unspecified.

Returns

The number of collected LCN.

getLCN() [1/2]

uint16_t ts::LogicalChannelNumbers::getLCN	(	uint16_t	srv_id,
		uint16_t	ts_id,
		uint16_t	onet_id = 0xFFFF
	)		const

Get the logical channel number of a service.

Parameters

[in]	srv_id	The service id to search.
[in]	ts_id	The transport stream id of the service.
[in]	onet_id	The original network id of the service. If set to 0xFFFF (the default), the first match service is used.

Returns

The LCN of the service or 0xFFFF if not found.

getLCN() [2/2]

uint16_t ts::LogicalChannelNumbers::getLCN

(

const ServiceIdTriplet &

srv

)

const

Get the logical channel number of a service.

Parameters

[in]

srv

The service id triplet to search.

Returns

The LCN of the service or 0xFFFF if not found.

getVisible() [1/2]

bool ts::LogicalChannelNumbers::getVisible	(	uint16_t	srv_id,
		uint16_t	ts_id,
		uint16_t	onet_id = 0xFFFF
	)		const

Get the visible flag of a service.

Parameters

[in]	srv_id	The service id to search.
[in]	ts_id	The transport stream id of the service.
[in]	onet_id	The original network id of the service. If set to 0xFFFF (the default), the first match service is used.

Returns

The visible flag of the service or true if not found.

getVisible() [2/2]

bool ts::LogicalChannelNumbers::getVisible

(

const ServiceIdTriplet &

srv

)

const

Get the visible flag of a service.

Parameters

[in]

srv

The service id triplet to search.

Returns

The visible flag of the service or true if not found.

updateService()

bool ts::LogicalChannelNumbers::updateService	(	Service &	srv,
		bool	replace
	)		const

Update a service description with its LCN.

Parameters

[in,out]	srv	The service description to update. The service id and transport stream id must be set. If the original network id is unset, the first LCN matching the service id and transport stream id is used.
[in]	replace	If srv already has an LCN and replace is false, don't search.

Returns

True if the LCN was updated, false otherwise.

updateServices()

template<class CONTAINER >

void ts::LogicalChannelNumbers::updateServices	(	CONTAINER &	services,
		Replacement	rep
	)		const

Update a list of service descriptions with LCN's.

Template Parameters

CONTAINER

A container class of Services with push_back() method.

Parameters

[in,out]	services	The container of service description to update.
[in]	rep	Replacement policy in services for new, updated, or absent services.

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

• tsLogicalChannelNumbers.h