H323_RealTimeChannel Class Reference

#include <channels.h>

Inheritance diagram for H323_RealTimeChannel:

List of all members.

Public Member Functions
Construction
	H323_RealTimeChannel (H323Connection &connection, const H323Capability &capability, Directions direction)
Overrides from class H323Channel
virtual BOOL	OnSendingPDU (H245_OpenLogicalChannel &openPDU) const
virtual void	OnSendOpenAck (const H245_OpenLogicalChannel &open, H245_OpenLogicalChannelAck &ack) const
virtual BOOL	OnReceivedPDU (const H245_OpenLogicalChannel &pdu, unsigned &errorCode)
virtual BOOL	OnReceivedAckPDU (const H245_OpenLogicalChannelAck &pdu)
Operations
virtual BOOL	OnSendingPDU (H245_H2250LogicalChannelParameters &param) const =0
virtual void	OnSendOpenAck (H245_H2250LogicalChannelAckParameters &param) const =0
virtual BOOL	OnReceivedPDU (const H245_H2250LogicalChannelParameters &param, unsigned &errorCode)=0
virtual BOOL	OnReceivedAckPDU (const H245_H2250LogicalChannelAckParameters &param)=0
virtual RTP_DataFrame::PayloadTypes	GetRTPPayloadType () const
virtual BOOL	SetDynamicRTPPayloadType (int newType)
Protected Attributes
RTP_DataFrame::PayloadTypes	rtpPayloadType

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Detailed Description

This class is for encpsulating the IETF Real Time Protocol interface.

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Constructor & Destructor Documentation

H323_RealTimeChannel::H323_RealTimeChannel	(	H323Connection &	connection,
		const H323Capability &	capability,
		Directions	direction
	)

Create a new channel.

Parameters:

connection	Connection to endpoint for channel
capability	Capability channel is using
direction	Direction of channel

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Member Function Documentation

virtual BOOL H323_RealTimeChannel::OnSendingPDU

(

H245_OpenLogicalChannel &

openPDU

)

const [virtual]

Fill out the OpenLogicalChannel PDU for the particular channel type.

Parameters:

openPDU

Open PDU to send.

Implements H323Channel.

virtual void H323_RealTimeChannel::OnSendOpenAck	(	const H245_OpenLogicalChannel &	open,
		H245_OpenLogicalChannelAck &	ack
	)			const [virtual]

This is called when request to create a channel is received from a remote machine and is about to be acknowledged.

Parameters:

open	Open PDU
ack	Acknowledgement PDU

Reimplemented from H323Channel.

virtual BOOL H323_RealTimeChannel::OnReceivedPDU	(	const H245_OpenLogicalChannel &	pdu,
		unsigned &	errorCode
	)			[virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint.

The default makes sure the parameters are compatible and passes on the PDU to the rtp session.

Parameters:

pdu	Open PDU
errorCode	Error code on failure

Reimplemented from H323Channel.

virtual BOOL H323_RealTimeChannel::OnReceivedAckPDU

(

const H245_OpenLogicalChannelAck &

pdu

)

[virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint.

The default makes sure the parameters are compatible and passes on the PDU to the rtp session.

Parameters:

pdu	Acknowledgement PDU

Reimplemented from H323Channel.

virtual BOOL H323_RealTimeChannel::OnSendingPDU

(

H245_H2250LogicalChannelParameters &

param

)

const [pure virtual]

Fill out the OpenLogicalChannel PDU for the particular channel type.

Parameters:

param

Open PDU to send.

Implemented in H323_RTPChannel, and H323_ExternalRTPChannel.

virtual void H323_RealTimeChannel::OnSendOpenAck

(

H245_H2250LogicalChannelAckParameters &

param

)

const [pure virtual]

This is called when request to create a channel is received from a remote machine and is about to be acknowledged.

Parameters:

param

Acknowledgement PDU

Implemented in H323_RTPChannel, and H323_ExternalRTPChannel.

virtual BOOL H323_RealTimeChannel::OnReceivedPDU	(	const H245_H2250LogicalChannelParameters &	param,
		unsigned &	errorCode
	)			[pure virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint.

The default behaviour sets the remote ports to send UDP packets to.

Parameters:

param	Acknowledgement PDU
errorCode	Error on failure

Implemented in H323_RTPChannel, and H323_ExternalRTPChannel.

virtual BOOL H323_RealTimeChannel::OnReceivedAckPDU

(

const H245_H2250LogicalChannelAckParameters &

param

)

[pure virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint.

The default behaviour sets the remote ports to send UDP packets to.

Parameters:

param

Acknowledgement PDU

Implemented in H323_RTPChannel, and H323_ExternalRTPChannel.

virtual RTP_DataFrame::PayloadTypes H323_RealTimeChannel::GetRTPPayloadType

(

)

const [virtual]

Get the active payload type used by this channel. This will use the dynamic payload type configured for the channel, or the fixed payload type defined by the media format.

virtual BOOL H323_RealTimeChannel::SetDynamicRTPPayloadType

(

int

newType

)

[virtual]

Set the dynamic payload type used by this channel.

Parameters:

newType

New RTP payload type number

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Member Data Documentation

RTP_DataFrame::PayloadTypes H323_RealTimeChannel::rtpPayloadType [protected]

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

• channels.h