class H323NonStandardDataCapability

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

Inheritance:


Public Methods

[more] Construction
[more] Overrides from class PObject
[more] Identification functions
[more] Protocol manipulation


Inherited from H323DataCapability:

Public Methods

Operations


Inherited from H323Capability:

Public Methods

Member variable access

Protected Fields

oCapabilityDirection capabilityDirection


Inherited from H323NonStandardCapabilityInfo:

Public Methods

ovirtual BOOL OnSendingPDU( PBYTEArray & data ) const
ovirtual BOOL OnReceivedPDU( const PBYTEArray & data )


Documentation

This class describes the interface to a non-standard data 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.

o Construction

o H323NonStandardDataCapability( unsigned maxBitRate, H323EndPoint & endpoint, const BYTE* dataBlock = NULL, PINDEX dataSize = 0, PINDEX comparisonOffset = 0, PINDEX comparisonLength = P_MAX_INDEX )
Create a new set of information about a non-standard codec.
Parameters:
maxBitRate - Maximum bit rate for data in 100's b/s
endpoint - Endpoint to get t35 information
dataBlock - Non-Standard data for codec type
dataSize - Size of dataBlock. If 0 and dataBlock != NULL use strlen(dataBlock)
comparisonOffset - Offset into dataBlock to compare
comparisonLength - Length of bytes to compare

o H323NonStandardDataCapability( unsigned maxBitRate, const PString & oid, const BYTE* dataBlock = NULL, PINDEX dataSize = 0, PINDEX comparisonOffset = 0, PINDEX comparisonLength = P_MAX_INDEX )
Create a new set of information about a non-standard codec.
Parameters:
maxBitRate - Maximum bit rate for data in 100's b/s
oid - OID for indentification of codec
dataBlock - Non-Standard data for codec type
dataSize - Size of dataBlock. If 0 and dataBlock != NULL use strlen(dataBlock)
comparisonOffset - Offset into dataBlock to compare
comparisonLength - Length of bytes to compare

o H323NonStandardDataCapability( unsigned maxBitRate, BYTE country, BYTE extension, WORD maufacturer, const BYTE* dataBlock = NULL, PINDEX dataSize = 0, PINDEX comparisonOffset = 0, PINDEX comparisonLength = P_MAX_INDEX )
Create a new set of information about a non-standard codec.
Parameters:
maxBitRate - Maximum bit rate for data in 100's b/s
country - t35 information
extension - t35 information
maufacturer - t35 information
dataBlock - Non-Standard data for codec type
dataSize - Size of dataBlock. If 0 and dataBlock != NULL use strlen(dataBlock)
comparisonOffset - Offset into dataBlock to compare
comparisonLength - Length of bytes to compare

o Overrides from class PObject

oComparison Compare(const PObject & obj) const
Compare two capability instances. This compares the main and sub-types of the capability.

o Identification functions

ovirtual unsigned GetSubType() const
Get the sub-type of the capability. This is a code dependent on the main type of the capability.

This returns one of the four possible combinations of mode and speed using the enum values of the protocol ASN H245_AudioCapability class.

o Protocol manipulation

ovirtual BOOL OnSendingPDU( H245_DataApplicationCapability & pdu ) const
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 H323NonStandardCapabilityinfo::OnSendingPDU() to handle the PDU.

Parameters:
pdu - PDU to set information on

ovirtual BOOL OnSendingPDU( H245_DataMode & pdu ) const
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 calls H323NonStandardCapabilityinfo::OnSendingPDU() to handle the PDU.

Parameters:
pdu - PDU to set information on

ovirtual BOOL OnReceivedPDU( const H245_DataApplicationCapability & pdu )
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 H323NonStandardCapabilityinfo::OnReceivedPDU() to handle the provided PDU.

Parameters:
pdu - PDU to set information on

ovirtual BOOL IsNonStandardMatch( const H245_NonStandardParameter & param ) const
Compare the nonStandardData part of the capability, if applicable.
Parameters:
param - Non standard field in PDU received


Direct child classes:
H323_T38NonStandardCapability

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