OpalPCSSConnection Class Reference

#include <pcss.h>

Inheritance diagram for OpalPCSSConnection:

Public Member Functions
Construction
	OpalPCSSConnection (OpalCall &call, OpalPCSSEndPoint &endpoint, const PString &playDevice, const PString &recordDevice, unsigned options=0, OpalConnection::StringOptions *stringOptions=NULL)
	~OpalPCSSConnection ()
Overrides from OpalConnection
virtual bool	TransferConnection (const PString &remoteParty)
virtual OpalMediaStream *	CreateMediaStream (const OpalMediaFormat &mediaFormat, unsigned sessionID, PBoolean isSource)
virtual PBoolean	SetAudioVolume (PBoolean source, unsigned percentage)
virtual unsigned	GetAudioSignalLevel (PBoolean source)
New operations
virtual PSoundChannel *	CreateSoundChannel (const OpalMediaFormat &mediaFormat, PBoolean isSource)
Member variable access
const PString &	GetSoundChannelPlayDevice () const
const PString &	GetSoundChannelRecordDevice () const
unsigned	GetSoundChannelBufferDepth () const
unsigned	GetSoundChannelBufferTime () const
Protected Attributes
OpalPCSSEndPoint &	endpoint
PString	soundChannelPlayDevice
PString	soundChannelRecordDevice
unsigned	soundChannelBuffers
unsigned	m_soundChannelBufferTime

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Detailed Description

PC Sound System connection.

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Constructor & Destructor Documentation

OpalPCSSConnection::OpalPCSSConnection	(	OpalCall &	call,
		OpalPCSSEndPoint &	endpoint,
		const PString &	playDevice,
		const PString &	recordDevice,
		unsigned	options = 0,
		OpalConnection::StringOptions *	stringOptions = NULL
	)

Create a new endpoint.

Parameters:

call	Owner calll for connection
endpoint	Owner endpoint for connection
playDevice	Sound channel play device
recordDevice	Sound channel record device
options	Option bit map to be passed to connection
stringOptions	Options to be passed to connection

OpalPCSSConnection::~OpalPCSSConnection

(

)

Destroy endpoint.

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Member Function Documentation

virtual OpalMediaStream* OpalPCSSConnection::CreateMediaStream	(	const OpalMediaFormat &	mediaFormat,
		unsigned	sessionID,
		PBoolean	isSource
	)			[virtual]

Open a new media stream. This will create a media stream of an appropriate subclass as required by the underlying connection protocol. For instance H.323 would create an OpalRTPStream.

The sessionID parameter may not be needed by a particular media stream and may be ignored. In the case of an OpalRTPStream it us used.

Note that media streams may be created internally to the underlying protocol. This function is not the only way a stream can come into existance.

The default behaviour is pure.

Parameters:

mediaFormat	Media format for stream
sessionID	Session number for stream
isSource	Is a source stream

Reimplemented from OpalLocalConnection.

virtual PSoundChannel* OpalPCSSConnection::CreateSoundChannel	(	const OpalMediaFormat &	mediaFormat,
		PBoolean	isSource
	)			[virtual]

Create an PSoundChannel based media stream.

Parameters:

mediaFormat	Media format for the connection
isSource	Direction for channel

virtual unsigned OpalPCSSConnection::GetAudioSignalLevel

(

PBoolean

source

)

[virtual]

Get the average signal level (0..32767) for the audio media channel. A return value of UINT_MAX indicates no valid signal, eg no audio channel opened.

Parameters:

source

true for source (microphone), false for sink (speaker)

Reimplemented from OpalConnection.

unsigned OpalPCSSConnection::GetSoundChannelBufferDepth

(

)

const [inline]

Get default the sound channel buffer depth. Note the largest of the depth in frames and the depth in milliseconds as returned by GetSoundBufferTime() is used.

unsigned OpalPCSSConnection::GetSoundChannelBufferTime

(

)

const [inline]

Get default the sound channel buffer time in milliseconds. Note the largest of the depth in frames and the depth in milliseconds as returned by GetSoundBufferTime() is used.

const PString& OpalPCSSConnection::GetSoundChannelPlayDevice

(

)

const [inline]

Get the name for the sound channel to be used for output. This defaults to the value of the PSoundChannel::GetDefaultDevice() function.

const PString& OpalPCSSConnection::GetSoundChannelRecordDevice

(

)

const [inline]

Get the name for the sound channel to be used for input. This defaults to the value of the PSoundChannel::GetDefaultDevice() function.

virtual PBoolean OpalPCSSConnection::SetAudioVolume	(	PBoolean	source,
		unsigned	percentage
	)			[virtual]

Set the volume (gain) for the audio media channel to the specified percentage.

Parameters:

source	true for source (microphone), false for sink (speaker)
percentage	Gain, 0=silent, 100=maximun

Reimplemented from OpalConnection.

virtual bool OpalPCSSConnection::TransferConnection

(

const PString &

remoteParty

)

[virtual]

Initiate the transfer of an existing call (connection) to a new remote party.

If remoteParty is a valid call token, then the remote party is transferred to that party (consultation transfer) and both calls are cleared.

Parameters:

remoteParty

Remote party to transfer the existing call to

Reimplemented from OpalConnection.

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Field Documentation

OpalPCSSEndPoint& OpalPCSSConnection::endpoint [protected]

Reimplemented from OpalLocalConnection.

unsigned OpalPCSSConnection::m_soundChannelBufferTime [protected]

unsigned OpalPCSSConnection::soundChannelBuffers [protected]

PString OpalPCSSConnection::soundChannelPlayDevice [protected]

PString OpalPCSSConnection::soundChannelRecordDevice [protected]

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

• pcss.h

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