org.jitsi.impl.neomedia.device

Class AudioSilenceMediaDevice

java.lang.Object

org.jitsi.impl.neomedia.device.AbstractMediaDevice

org.jitsi.impl.neomedia.device.MediaDeviceImpl

org.jitsi.impl.neomedia.device.AudioMediaDeviceImpl

org.jitsi.impl.neomedia.device.AudioSilenceMediaDevice

All Implemented Interfaces:

MediaDevice

public class AudioSilenceMediaDevice
extends AudioMediaDeviceImpl

Implements a MediaDevice which provides silence in the form of audio media and does not play back any (audio) media (because Jitsi Videobridge is a server-side technology).

Author:

Lyubomir Marinov, Boris Grozev

Constructor Summary

Constructors

Constructor and Description
AudioSilenceMediaDevice() Initializes a new AudioSilenceMediaDevice instance.
AudioSilenceMediaDevice(boolean clockOnly) Initializes a new AudioSilenceMediaDevice instance.

Method Summary

Modifier and Type	Method and Description
protected javax.media.protocol.CaptureDevice	createCaptureDevice() Creates the JMF CaptureDevice this instance represents and provides an implementation of MediaDevice for.
protected javax.media.Processor	createPlayer(javax.media.protocol.DataSource dataSource) Initializes a new Processor instance which is to be used to play back media on this MediaDevice.
MediaDeviceSession	createSession() Creates a new MediaDeviceSession instance which is to represent the use of this MediaDevice by a MediaStream.
MediaDirection	getDirection() Returns the MediaDirection supported by this device.

Methods inherited from class org.jitsi.impl.neomedia.device.AudioMediaDeviceImpl

connect, createRenderer, getSupportedExtensions, superCreateCaptureDevice

Methods inherited from class org.jitsi.impl.neomedia.device.MediaDeviceImpl

createOutputDataSource, createTracingCaptureDevice, getCaptureDeviceInfo, getCaptureDeviceInfoLocatorProtocol, getFormat, getMediaType, getSupportedFormats, getSupportedFormats, getSupportedFormats, toString

Methods inherited from class org.jitsi.impl.neomedia.device.AbstractMediaDevice

getSupportedFormats

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AudioSilenceMediaDevice

public AudioSilenceMediaDevice()

Initializes a new AudioSilenceMediaDevice instance.

AudioSilenceMediaDevice

public AudioSilenceMediaDevice(boolean clockOnly)

Initializes a new AudioSilenceMediaDevice instance.

Parameters:

clockOnly - the value to set to clockOnly.

Method Detail

createCaptureDevice

protected javax.media.protocol.CaptureDevice createCaptureDevice()

Creates the JMF CaptureDevice this instance represents and provides an implementation of MediaDevice for. Overrides the super implementation to initialize a CaptureDevice without asking FMJ to initialize one for a CaptureDeviceInfo.

Overrides:

createCaptureDevice in class AudioMediaDeviceImpl

Returns:

the JMF CaptureDevice this instance represents and provides an implementation of MediaDevice for; null if the creation fails

createPlayer

protected javax.media.Processor createPlayer(javax.media.protocol.DataSource dataSource)

Initializes a new Processor instance which is to be used to play back media on this MediaDevice. Allows extenders to, for example, disable the playback on this MediaDevice by completely overriding and returning null. Overrides the super implementation to disable the very playback because Jitsi Videobridge is a server-side technology.

Overrides:

createPlayer in class AbstractMediaDevice

Parameters:

dataSource - the DataSource which is to be played back by the new Processor instance

Returns:

a new Processor instance which is to be used to play back the media provided by the specified dataSource or null if the specified dataSource is to not be played back

createSession

public MediaDeviceSession createSession()

Creates a new MediaDeviceSession instance which is to represent the use of this MediaDevice by a MediaStream. Overrides the super implementation to initialize a MediaDeviceSession which disables the very playback because Jitsi Videobridge is a server-side technology.

Overrides:

createSession in class AbstractMediaDevice

Returns:

a new MediaDeviceSession instance which is to represent the use of this MediaDevice by a MediaStream

getDirection

public MediaDirection getDirection()

Returns the MediaDirection supported by this device. Overrides the super implementation to always return MediaDirection.SENDRECV because this instance stands for a relay and because the super bases the MediaDirection on the CaptureDeviceInfo which this instance does not have.

Specified by:

getDirection in interface MediaDevice

Overrides:

getDirection in class MediaDeviceImpl

Returns:

MediaDirection.SENDONLY if this is a read-only device, MediaDirection.RECVONLY if this is a write-only device or MediaDirection.SENDRECV if this MediaDevice can both capture and render media

See Also:

MediaDevice.getDirection()