org.jitsi.impl.neomedia.device

Class AudioSilenceSystem

java.lang.Object

org.jitsi.utils.event.PropertyChangeNotifier

org.jitsi.impl.neomedia.device.DeviceSystem

org.jitsi.impl.neomedia.device.AudioSystem

org.jitsi.impl.neomedia.device.AudioSilenceSystem

public class AudioSilenceSystem
extends AudioSystem

Implements an AudioSystem which produces silence without capturing from an actual hardware device. Hence, it is suitable for server-side technologies that do not need to and/or cannot capture speech.

Author:

Pawel Domas

Nested Class Summary

Nested classes/interfaces inherited from class org.jitsi.impl.neomedia.device.AudioSystem

AudioSystem.DataFlow

Field Summary

Fields inherited from class org.jitsi.impl.neomedia.device.AudioSystem

FEATURE_AGC, FEATURE_DENOISE, FEATURE_ECHO_CANCELLATION, FEATURE_NOTIFY_AND_PLAYBACK_DEVICES, LOCATOR_PROTOCOL_AUDIORECORD, LOCATOR_PROTOCOL_AUDIOSILENCE, LOCATOR_PROTOCOL_JAVASOUND, LOCATOR_PROTOCOL_MACCOREAUDIO, LOCATOR_PROTOCOL_OPENSLES, LOCATOR_PROTOCOL_PORTAUDIO, LOCATOR_PROTOCOL_PULSEAUDIO, LOCATOR_PROTOCOL_WASAPI, PNAME_DENOISE, PNAME_ECHOCANCEL

Fields inherited from class org.jitsi.impl.neomedia.device.DeviceSystem

FEATURE_REINITIALIZE, LOCATOR_PROTOCOL_ANDROIDCAMERA, LOCATOR_PROTOCOL_CIVIL, LOCATOR_PROTOCOL_DIRECTSHOW, LOCATOR_PROTOCOL_IMGSTREAMING, LOCATOR_PROTOCOL_MEDIARECORDER, LOCATOR_PROTOCOL_QUICKTIME, LOCATOR_PROTOCOL_VIDEO4LINUX2, PROP_DEVICES

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AudioSilenceSystem() Initializes a new AudioSilenceSystem instance.

Method Summary

Modifier and Type	Method and Description
protected void	doInitialize() Invoked by DeviceSystem.initialize() to perform the very logic of the initialization of this DeviceSystem.

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

createRenderer, createRenderer, getAudioInputStream, getAudioSystem, getAudioSystems, getDevice, getDevices, getFormat, getPropertyName, getSelectedDevice, isAutomaticGainControl, isDenoise, isEchoCancel, postInitialize, postInitializeSpecificDevices, preInitialize, setAutomaticGainControl, setCaptureDevices, setDenoise, setDevice, setEchoCancel, setPlaybackDevices

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

filterDeviceListByLocatorProtocol, getDeviceSystems, getFeatures, getFormat, getLocatorProtocol, getMediaType, getRendererClassName, initialize, initializeDeviceSystems, initializeDeviceSystems, toString

Methods inherited from class org.jitsi.utils.event.PropertyChangeNotifier

addPropertyChangeListener, firePropertyChange, getPropertyChangeSource, removePropertyChangeListener

Methods inherited from class java.lang.Object

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

Constructor Detail

AudioSilenceSystem

protected AudioSilenceSystem()
                      throws Exception

Initializes a new AudioSilenceSystem instance.

Throws:

Exception

Method Detail

doInitialize

protected void doInitialize()
                     throws Exception

Description copied from class: DeviceSystem

Invoked by DeviceSystem.initialize() to perform the very logic of the initialization of this DeviceSystem. This instance has been prepared for initialization by an earlier call to DeviceSystem.preInitialize() and the initialization will be completed with a subsequent call to DeviceSystem.postInitialize().

Specified by:

doInitialize in class DeviceSystem

Throws:

Exception - if an error occurs during the initialization of this instance. The initialization of this instance will be completed with a subsequent call to postInitialize() regardless of any Exception thrown by doInitialize().