org.mobicents.media.server.impl.resource.cnf
Class AudioMixer

java.lang.Object
  org.mobicents.media.server.impl.BaseComponent
      org.mobicents.media.server.impl.AbstractSink
          org.mobicents.media.server.impl.AbstractSinkSet
              org.mobicents.media.server.impl.resource.cnf.AudioMixer

All Implemented Interfaces:

java.io.Serializable, org.mobicents.media.Component, org.mobicents.media.MediaSink, org.mobicents.media.Outlet

Direct Known Subclasses:

AdaptiveAudioMixer, MaxPowerAudioMixer

public class AudioMixer
extends AbstractSinkSet
implements org.mobicents.media.Outlet

Author:

Oleg Kulikov

See Also:

Serialized Form

Field Summary

protected int	channelCount
protected static org.mobicents.media.Format[]	formats
protected byte[][]	frames
protected static org.mobicents.media.format.AudioFormat	LINEAR
protected MixerOutput	mixerOutput
protected int	packetPeriod
protected int	packetSize

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

logger, otherParty

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

format

Constructor Summary

AudioMixer(java.lang.String name)
Creates a new instance of AudioMixer.

Method Summary

short[]	byteToShortArray(byte[] input) Converts inner byte representation of the signal into 16bit per sample array
void	connect(org.mobicents.media.MediaSink sink)
AbstractSink	createSink(org.mobicents.media.MediaSource otherParty)
void	destroySink(AbstractSink sink)
void	disconnect(org.mobicents.media.MediaSink sink)
void	evolve(org.mobicents.media.Buffer buffer, long timestamp) (Non Java-doc).
org.mobicents.media.Format[]	getFormats() (Non Java-doc.)
org.mobicents.media.MediaSource	getOutput() (Non Java-doc.)
protected void	init() Initializes audio mixer.
boolean	isAcceptable(org.mobicents.media.Format fmt) (Non Java-doc.)
byte[]	mix(byte[][] frames) Mixes input packets.
void	onMediaTransfer(org.mobicents.media.Buffer buffer) (Non Java-doc.)
void	setConnection(org.mobicents.media.server.spi.Connection connection) (Non Java-doc.)
void	setEndpoint(org.mobicents.media.server.spi.Endpoint endpoint) (Non Java-doc.)
void	start() (Non Java-doc).
void	stop() (Non Java-doc).

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

connect, disconnect, getActiveSinkCount, getStreams, isMultipleConnectionsAllowed

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

assignPreffered, connect, disconnect, failed, getBytesReceived, getInterface, getPacketsReceived, getPreffered, isConnected, isStarted, receive, resetStats, selectPreffered, started, stopped

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

addListener, getConnection, getEndpoint, getFormat, getId, getName, removeListener, sendEvent, subset, 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.Component

addListener, getConnection, getEndpoint, getFormat, getId, getInterface, getName, removeListener, resetStats

Methods inherited from interface org.mobicents.media.MediaSink

connect, disconnect, getBytesReceived, getPacketsReceived, isConnected, isStarted, receive

Field Detail

LINEAR

protected static final org.mobicents.media.format.AudioFormat LINEAR

formats

protected static final org.mobicents.media.Format[] formats

packetSize

protected int packetSize

packetPeriod

protected int packetPeriod

mixerOutput

protected MixerOutput mixerOutput

channelCount

protected int channelCount

frames

protected byte[][] frames

Constructor Detail

AudioMixer

public AudioMixer(java.lang.String name)

Creates a new instance of AudioMixer.

Parameters:

packetPeriod - packetization period in milliseconds.

fmt - format of the output stream.

Method Detail

init

protected void init()

Initializes audio mixer.

Throws:

javax.media.format.UnsupportedFormatException

getOutput

public org.mobicents.media.MediaSource getOutput()

(Non Java-doc.)

Specified by:

getOutput in interface org.mobicents.media.Outlet

See Also:

Outlet.getOutput().

start

public void start()

Description copied from class: AbstractSink

(Non Java-doc).

Specified by:

start in interface org.mobicents.media.MediaSink

Overrides:

start in class AbstractSink

See Also:

MediaSink.start().

stop

public void stop()

Description copied from class: AbstractSink

(Non Java-doc).

Specified by:

stop in interface org.mobicents.media.MediaSink

Overrides:

stop in class AbstractSink

See Also:

MediaSink.stop().

setEndpoint

public void setEndpoint(org.mobicents.media.server.spi.Endpoint endpoint)

Description copied from class: BaseComponent

(Non Java-doc.)

Specified by:

setEndpoint in interface org.mobicents.media.Component

Overrides:

setEndpoint in class BaseComponent

See Also:

Component.setEndpoint(Endpoint).

setConnection

public void setConnection(org.mobicents.media.server.spi.Connection connection)

Description copied from class: BaseComponent

(Non Java-doc.)

Specified by:

setConnection in interface org.mobicents.media.Component

Overrides:

setConnection in class BaseComponent

See Also:

org.mobicents.media.Component#setConnection().

byteToShortArray

public short[] byteToShortArray(byte[] input)

Converts inner byte representation of the signal into 16bit per sample array

Parameters:

input - the array where sample takes two elements.

Returns:

array where sample takes one element.

mix

public byte[] mix(byte[][] frames)

Mixes input packets.

Parameters:

input - collection of arras of samples of same length

Returns:

array of result array of samples.

evolve

public void evolve(org.mobicents.media.Buffer buffer,
                   long timestamp)

(Non Java-doc).

See Also:

AbstractSource.evolve(org.mobicents.media.Buffer, long).

isAcceptable

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

(Non Java-doc.)

See Also:

org.mobicents.media.MediaSink#isAcceptable(org.mobicents.media.Format)

onMediaTransfer

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

(Non Java-doc.)

Specified by:

onMediaTransfer in class AbstractSink

Parameters:

buffer - the new portion of media data.

See Also:

AbstractSink.onMediaTransfer(org.mobicents.media.Buffer)

getFormats

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

(Non Java-doc.)

Specified by:

getFormats in interface org.mobicents.media.MediaSink

See Also:

MediaSink.getFormats()

connect

public void connect(org.mobicents.media.MediaSink sink)

Specified by:

connect in interface org.mobicents.media.Outlet

disconnect

public void disconnect(org.mobicents.media.MediaSink sink)

Specified by:

disconnect in interface org.mobicents.media.Outlet

createSink

public AbstractSink createSink(org.mobicents.media.MediaSource otherParty)

Specified by:

createSink in class AbstractSinkSet

destroySink

public void destroySink(AbstractSink sink)

Specified by:

destroySink in class AbstractSinkSet