H323_RealTimeChannel Class Reference

#include <channels.h>

Inheritance diagram for H323_RealTimeChannel:

Public Member Functions
Construction
	H323_RealTimeChannel (H323Connection &connection, const H323Capability &capability, Directions direction)
Overrides from class H323Channel
virtual PBoolean	OnSendingPDU (H245_OpenLogicalChannel &openPDU) const
virtual void	OnSendOpenAck (const H245_OpenLogicalChannel &open, H245_OpenLogicalChannelAck &ack) const
virtual PBoolean	OnReceivedPDU (const H245_OpenLogicalChannel &pdu, unsigned &errorCode)
virtual PBoolean	OnReceivedAckPDU (const H245_OpenLogicalChannelAck &pdu)
Operations
virtual PBoolean	OnSendingPDU (H245_H2250LogicalChannelParameters &param) const
virtual void	OnSendOpenAck (H245_H2250LogicalChannelAckParameters &param) const
virtual PBoolean	OnReceivedPDU (const H245_H2250LogicalChannelParameters &param, unsigned &errorCode)
virtual PBoolean	OnReceivedAckPDU (const H245_H2250LogicalChannelAckParameters &param)
RTP_DataFrame::PayloadTypes	GetDynamicRTPPayloadType () const
Public Member Functions inherited from H323UnidirectionalChannel
	H323UnidirectionalChannel (H323Connection &connection, const H323Capability &capability, Directions direction)
	~H323UnidirectionalChannel ()
virtual Directions	GetDirection () const
virtual PBoolean	SetInitialBandwidth ()
virtual PBoolean	Open ()
virtual PBoolean	Start ()
virtual OpalMediaStreamPtr	GetMediaStream () const
Public Member Functions inherited from H323Channel
virtual bool	OnMediaCommand (const OpalMediaCommand &)
	H323Channel (H323Connection &connection, const H323Capability &capability)
	~H323Channel ()
virtual void	PrintOn (ostream &strm) const
const H323ChannelNumber &	GetNumber () const
void	SetNumber (const H323ChannelNumber &num)
const H323ChannelNumber &	GetReverseChannel () const
void	SetReverseChannel (const H323ChannelNumber &num)
unsigned	GetBandwidthUsed () const
PBoolean	SetBandwidthUsed (unsigned bandwidth)
const H323Capability &	GetCapability () const
PBoolean	IsPaused () const
void	SetPause (PBoolean pause)
virtual unsigned	GetSessionID () const
virtual bool	SetSessionID (unsigned sessionID)
virtual PBoolean	GetMediaTransportAddress (OpalTransportAddress &data, OpalTransportAddress &control) const
virtual void	Close ()
PBoolean	IsOpen () const
virtual void	OnFlowControl (long bitRateRestriction)
virtual void	OnMiscellaneousCommand (const H245_MiscellaneousCommand_type &type)
virtual void	OnMiscellaneousIndication (const H245_MiscellaneousIndication_type &type)
virtual void	OnJitterIndication (DWORD jitter, int skippedFrameCount, int additionalBuffer)

Additional Inherited Members
Public Types inherited from H323Channel
enum	Directions { IsBidirectional, IsTransmitter, IsReceiver, NumDirections }
Protected Member Functions inherited from H323UnidirectionalChannel
virtual void	InternalClose ()
Protected Attributes inherited from H323UnidirectionalChannel
bool	receiver
OpalMediaStreamPtr	mediaStream
Protected Attributes inherited from H323Channel
H323EndPoint &	endpoint
H323Connection &	connection
H323Capability *	capability
H323ChannelNumber	number
H323ChannelNumber	reverseChannel
bool	opened
bool	paused
PAtomicInteger	m_terminating

Detailed Description

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

Constructor & Destructor Documentation

H323_RealTimeChannel()

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

Member Function Documentation

GetDynamicRTPPayloadType()

RTP_DataFrame::PayloadTypes H323_RealTimeChannel::GetDynamicRTPPayloadType

(

)

const

OnReceivedAckPDU() [1/2]

virtual PBoolean 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.

OnReceivedAckPDU() [2/2]

virtual PBoolean H323_RealTimeChannel::OnReceivedAckPDU ( const H245_H2250LogicalChannelAckParameters &  param )

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

Reimplemented in H323_ExternalRTPChannel, and H323_RTPChannel.

OnReceivedPDU() [1/2]

virtual PBoolean 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.

OnReceivedPDU() [2/2]

virtual PBoolean H323_RealTimeChannel::OnReceivedPDU ( const H245_H2250LogicalChannelParameters &  param, 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 behaviour sets the remote ports to send UDP packets to.

Parameters

param	Acknowledgement PDU
errorCode	Error on failure

Reimplemented in H323_ExternalRTPChannel, and H323_RTPChannel.

OnSendingPDU() [1/2]

virtual PBoolean 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.

OnSendingPDU() [2/2]

virtual PBoolean H323_RealTimeChannel::OnSendingPDU ( H245_H2250LogicalChannelParameters &  param ) const

virtual

Fill out the OpenLogicalChannel PDU for the particular channel type.

Parameters

param

Open PDU to send.

Reimplemented in H323_ExternalRTPChannel, and H323_RTPChannel.

OnSendOpenAck() [1/2]

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.

OnSendOpenAck() [2/2]

virtual void H323_RealTimeChannel::OnSendOpenAck ( H245_H2250LogicalChannelAckParameters &  param ) const

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

Reimplemented in H323_ExternalRTPChannel, and H323_RTPChannel.

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

• channels.h