H323_RTPChannel Class Reference

`#include <channels.h>`

Inheritance diagram for H323_RTPChannel:

## Public Member Functions

Construction
| H323_RTPChannel (H323Connection &connection, const H323Capability &capability, Directions direction, RTP_Session &rtp)
| ~H323_RTPChannel ()
| Destroy the channel. More...
Overrides from class H323Channel
virtual unsigned | GetSessionID () const
virtual bool | SetSessionID (unsigned sessionID)
Overrides from class H323_RealTimeChannel
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)
Public Member Functions inherited from H323_RealTimeChannel
| H323_RealTimeChannel (H323Connection &connection, const H323Capability &capability, Directions direction)
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)
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 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)

## Protected Attributes

RTP_Session & | rtpSession
H323_RTP_Session & | rtpCallbacks
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

## Additional Inherited Members

Public Types inherited from H323Channel
enum | Directions { IsBidirectional, IsTransmitter, IsReceiver, NumDirections }
Protected Member Functions inherited from H323UnidirectionalChannel
virtual void | InternalClose ()

## Detailed Description

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

## Constructor & Destructor Documentation

H323_RTPChannel::H323_RTPChannel | ( | H323Connection & | connection,
|  | const H323Capability & | capability,
|  | Directions | direction,
|  | RTP_Session & | rtp
| ) |  |

Create a new channel.

Parameters

  connection | Connection to endpoint for channel
  capability | Capability channel is using
  rtp | Direction of channel RTP session for channel

H323_RTPChannel::~H323_RTPChannel | ( |  | ) |

Destroy the channel.

## Member Function Documentation

virtual unsigned H323_RTPChannel::GetSessionID | ( |  | ) | const

virtual

Indicate the session number of the channel. Return session for channel. This returns the session ID of the RTP_Session member variable.

Reimplemented from H323Channel.

virtual PBoolean H323_RTPChannel::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 from H323_RealTimeChannel.

virtual PBoolean H323_RTPChannel::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 from H323_RealTimeChannel.

virtual PBoolean H323_RTPChannel::OnSendingPDU | ( | H245_H2250LogicalChannelParameters & | param | ) | const

virtual

Fill out the OpenLogicalChannel PDU for the particular channel type.

Parameters

  param | Open PDU to send.

Reimplemented from H323_RealTimeChannel.

virtual void H323_RTPChannel::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 from H323_RealTimeChannel.

virtual bool H323_RTPChannel::SetSessionID | ( | unsigned | sessionID | ) |

virtual

Set the session number of the channel. During OLC negotations teh master may change the session number being used for the logical channel.

Returns false if the sesion could not be renumbered.

Parameters

  sessionID | New session ID

Reimplemented from H323Channel.

## Field Documentation

H323_RTP_Session& H323_RTPChannel::rtpCallbacks

protected

RTP_Session& H323_RTPChannel::rtpSession

protected

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

- channels.h