org.mobicents.media.server.impl.resource.dtmf
Class InbandDetectorImpl

java.lang.Object
  org.mobicents.media.server.impl.BaseComponent
      org.mobicents.media.server.impl.AbstractSink
          org.mobicents.media.server.impl.resource.dtmf.DtmfBuffer
              org.mobicents.media.server.impl.resource.dtmf.InbandDetectorImpl

All Implemented Interfaces:

java.io.Serializable, org.mobicents.media.Component, org.mobicents.media.MediaSink, org.mobicents.media.server.spi.resource.DtmfDetector

public class InbandDetectorImpl
extends DtmfBuffer

Implements inband DTMF detector. Inband means that DTMF is transmitted within the audio of the phone conversation, i.e. it is audible to the conversation partners. Therefore only uncompressed codecs like g711 alaw or ulaw can carry inband DTMF reliably. Female voice are known to once in a while trigger the recognition of a DTMF tone. For analog lines inband is the only possible means to transmit DTMF. Though Inband DTMF detection may work for other codecs like SPEEX, GSM, G729 as DtmfDetector is using DSP in front of InbandDetector there is no guarantee that it will always work. In future MMS may not have DSP in front of InbandDetector and hence Inband detection for codecs like SPEEX, GSM, G729 may completely stop

Author:

Oleg Kulikov, amit bhayani

See Also:

Serialized Form

Field Summary

static java.lang.String[][]

events

Fields inherited from class org.mobicents.media.server.impl.resource.dtmf.DtmfBuffer

silence, TIMEOUT

Fields inherited from class org.mobicents.media.server.impl.AbstractSink

otherParty

Fields inherited from interface org.mobicents.media.server.spi.resource.DtmfDetector

DETECTOR_DURATION, DETECTOR_MASK, DETECTOR_SILENCE, TONE

Fields inherited from interface org.mobicents.media.Component

AUDIO_PLAYER, AUDIO_RECORDER, DTMF_DETECTOR, DTMF_GENERATOR

Constructor Summary

InbandDetectorImpl(java.lang.String name)
Creates new instance of Detector.

Method Summary

void	connect(org.mobicents.media.MediaSource otherParty) (Non Java-doc).
int	getDuration()
org.mobicents.media.Format[]	getFormats()
void	init() After creating instance of InbandDetector, set the Tone Duratin if its not default = 50ms and the initialize it
boolean	isAcceptable(org.mobicents.media.Format format)
void	receive(org.mobicents.media.Buffer buffer) (Non Java-doc).
void	setDuration(int duartion)
void	start() (Non Java-doc).
void	stop() (Non Java-doc).

Methods inherited from class org.mobicents.media.server.impl.resource.dtmf.DtmfBuffer

getMask, getSilenec, push, setMask, setSilenec

Methods inherited from class org.mobicents.media.server.impl.AbstractSink

disconnect, isConnected

Methods inherited from class org.mobicents.media.server.impl.BaseComponent

addListener, getConnection, getEndpoint, getId, getName, getResourceType, removeListener, sendEvent, setConnection, setEndpoint, setResourceType, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mobicents.media.MediaSink

disconnect

Methods inherited from interface org.mobicents.media.Component

addListener, getConnection, getEndpoint, getId, getName, getResourceType, removeListener, setConnection, setEndpoint, setResourceType

Field Detail

events

public static final java.lang.String[][] events

Constructor Detail

InbandDetectorImpl

public InbandDetectorImpl(java.lang.String name)

Creates new instance of Detector.

Method Detail

init

public void init()

After creating instance of InbandDetector, set the Tone Duratin if its not default = 50ms and the initialize it

start

public void start()

(Non Java-doc).

See Also:

org.mobicents.media.server.spi.MediaSink#start().

stop

public void stop()

(Non Java-doc).

See Also:

org.mobicents.media.server.spi.MediaSink#stop().

setDuration

public void setDuration(int duartion)

getDuration

public int getDuration()

receive

public void receive(org.mobicents.media.Buffer buffer)

(Non Java-doc).

See Also:

org.mobicents.media.protocol.BufferTransferHandler.transferData().

getFormats

public org.mobicents.media.Format[] getFormats()

isAcceptable

public boolean isAcceptable(org.mobicents.media.Format format)

connect

public void connect(org.mobicents.media.MediaSource otherParty)

Description copied from class: AbstractSink

(Non Java-doc).

Specified by:

connect in interface org.mobicents.media.MediaSink

Overrides:

connect in class AbstractSink

See Also:

org.mobicents.MediaSink#connect(MediaStream).