H323GenericVideoCapability Class Reference

#include <h323caps.h>

Inheritance diagram for H323GenericVideoCapability:

Public Member Functions
Construction
	H323GenericVideoCapability (const PString &capabilityId, PINDEX maxBitRate=0)
Overrides from class PObject
Comparison	Compare (const PObject &obj) const
Identification functions
virtual unsigned	GetSubType () const
Protocol manipulation
virtual PBoolean	OnSendingPDU (H245_VideoCapability &pdu, CommandType type) const
virtual PBoolean	OnSendingPDU (H245_VideoMode &pdu) const
virtual PBoolean	OnReceivedPDU (const H245_VideoCapability &pdu, CommandType type)
virtual PBoolean	IsMatch (const PASN_Choice &subTypePDU) const

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Detailed Description

This class describes the interface to a generic video codec used to transfer data via the logical channels opened and managed by the H323 control channel.

An application may create a descendent off this class and override functions as required for descibing the codec.

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Constructor & Destructor Documentation

H323GenericVideoCapability::H323GenericVideoCapability	(	const PString &	capabilityId,
		PINDEX	maxBitRate = 0
	)

Create a new set of information about a non-standard codec.

Parameters:

capabilityId	generic codec identifier (OID)
maxBitRate	maxBitRate parameter for the GenericCapability

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Member Function Documentation

Comparison H323GenericVideoCapability::Compare

(

const PObject &

obj

)

const

Compare two capability instances. This compares the main and sub-types of the capability.

Reimplemented from H323Capability.

Reimplemented in H323H239VideoCapability.

virtual unsigned H323GenericVideoCapability::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_genericCapability.

Implements H323Capability.

Reimplemented in H323ExtendedVideoCapability.

virtual PBoolean H323GenericVideoCapability::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.

Reimplemented in H323ExtendedVideoCapability.

virtual PBoolean H323GenericVideoCapability::OnReceivedPDU	(	const H245_VideoCapability &	pdu,
		CommandType	type
	)			[virtual]

This function is called whenever and incoming TerminalCapabilitySet or OpenLogicalChannel PDU has been used to construct the control channel. It allows the capability to set from the PDU fields, information in members specific to the class.

The default behaviour calls H323GenericCapabilityinfo::OnReceivedPDU() to handle the provided PDU.

Parameters:

pdu	PDU to get information from
type	Type of PDU to send in

Reimplemented from H323VideoCapability.

Reimplemented in H323ExtendedVideoCapability, and H323H239VideoCapability.

virtual PBoolean H323GenericVideoCapability::OnSendingPDU

(

H245_VideoMode &

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 sets the PDUs tag according to the GetSubType() function (translated to different enum).

Parameters:

pdu	PDU to set information on

Implements H323VideoCapability.

Reimplemented in H323ExtendedVideoCapability.

virtual PBoolean H323GenericVideoCapability::OnSendingPDU	(	H245_VideoCapability &	pdu,
		CommandType	type
	)			const [virtual]

This function is called whenever and outgoing TerminalCapabilitySet or OpenLogicalChannel 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 H323GenericCapabilityinfo::OnSendingPDU() to handle the PDU.

Parameters:

pdu	PDU to set information on
type	Type of PDU to send in

Reimplemented from H323VideoCapability.

Reimplemented in H323ExtendedVideoCapability, and H323H239VideoCapability.

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

• h323caps.h

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