H323GenericControlCapability Class Reference

#include <h323caps.h>

Inheritance diagram for H323GenericControlCapability:

Public Member Functions
Construction
	H323GenericControlCapability (const PString &identifier)
Identification functions
virtual MainTypes	GetMainType () const
virtual unsigned	GetSubType () const
Protocol manipulation
virtual PBoolean	OnSendingPDU (H245_Capability &pdu) const
virtual PBoolean	OnSendingPDU (H245_ModeElement &pdu) const
virtual PBoolean	OnReceivedPDU (const H245_Capability &pdu)
virtual PBoolean	IsMatch (const PASN_Choice &subTypePDU) const
Operations
virtual H323Channel *	CreateChannel (H323Connection &connection, H323Channel::Directions dir, unsigned sessionID, const H245_H2250LogicalChannelParameters *param) const

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Detailed Description

This class describes a generic control capability, as used in H.239

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Constructor & Destructor Documentation

H323GenericControlCapability::H323GenericControlCapability

(

const PString &

identifier

)

Create a new data capability.

Parameters:

identifier

Indentifer (OID) for generic control

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Member Function Documentation

virtual H323Channel* H323GenericControlCapability::CreateChannel	(	H323Connection &	connection,
		H323Channel::Directions	dir,
		unsigned	sessionID,
		const H245_H2250LogicalChannelParameters *	param
	)			const [virtual]

Create the channel instance, allocating resources as required. This creates a logical channel object appropriate for the parameters provided. Not if param is NULL, sessionID must be provided, otherwise this is taken from the fields in param.

Parameters:

connection	Owner connection for channel
dir	Direction of channel
sessionID	Session ID for RTP channel
param	Parameters for channel

Implements H323Capability.

virtual MainTypes H323GenericControlCapability::GetMainType

(

)

const [virtual]

Get the main type of the capability. Always returns e_Data.

Implements H323Capability.

virtual unsigned H323GenericControlCapability::GetSubType

(

)

const [virtual]

Get the sub-type of the capability. This is a code dependent on the main type of the capability.

This returns H245_VideoCapability::e_extendedVideoCapability.

Implements H323Capability.

virtual PBoolean H323GenericControlCapability::IsMatch

(

const PASN_Choice &

subTypePDU

)

const [virtual]

Compare the generic part of the capability, if applicable.

Parameters:

subTypePDU

sub-type PDU of H323Capability

Reimplemented from H323Capability.

virtual PBoolean H323GenericControlCapability::OnReceivedPDU

(

const H245_Capability &

pdu

)

[virtual]

This function is called whenever and incoming TerminalCapabilitySet PDU is received on the control channel, and a new H323Capability descendent was created. This completes reading fields from the PDU into the classes members.

If the function returns PFalse then the received PDU codec description is not supported, so will be ignored. The default behaviour simply returns PTrue.

Parameters:

pdu	PDU to get information from

Reimplemented from H323Capability.

virtual PBoolean H323GenericControlCapability::OnSendingPDU

(

H245_ModeElement &

pdu

)

const [virtual]

This function is called whenever and outgoing RequestMode PDU is being constructed for the control channel. It allows the capability to set the PDU fields from information in members specific to the class.

The default behaviour is pure.

Parameters:

pdu	PDU to set information on

Implements H323Capability.

virtual PBoolean H323GenericControlCapability::OnSendingPDU

(

H245_Capability &

pdu

)

const [virtual]

This function is called whenever and outgoing TerminalCapabilitySet PDU is being constructed for the control channel. It allows the capability to set the PDU fields from information in members specific to the class.

The default behaviour calls the OnSendingPDU() function with a more specific PDU type.

Parameters:

pdu	PDU to set information on

Implements H323Capability.

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

• h323caps.h

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