net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.alsa
Class DataSource

java.lang.Object
  javax.media.protocol.DataSource
      javax.media.protocol.PushBufferDataSource
          net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.alsa.DataSource

All Implemented Interfaces:

javax.media.Controls, javax.media.Duration

public class DataSource
extends javax.media.protocol.PushBufferDataSource

low-latency ALSA access through JNI wrapper

Author:

Jean Lorchat, Lubomir Marinov

Field Summary

protected boolean	connected
protected javax.media.Time	duration
protected boolean	started
protected AlsaStream	stream
protected AlsaStream[]	streams

Fields inherited from interface javax.media.Duration

DURATION_UNBOUNDED, DURATION_UNKNOWN

Constructor Summary

DataSource()
Constructs a new ALSA DataSource.

Method Summary

void	connect() Connect the datasource
void	disconnect() Disconnect the datasource
String	getContentType() Gets the type of the content made available by this DataSource (i.e.
Object	getControl(String controlType) Return required control from the Control[] array if exists, that is
Object[]	getControls() Gives control information to the caller.
javax.media.Time	getDuration() Gives to the caller the duration information of our stream Which is, obviously unknown.
javax.media.protocol.PushBufferStream[]	getStreams() Returns an array of PushBufferStream containing all the streams i.e.
void	start() Start the datasource and the underlying stream
void	stop() Stop the datasource and it's underlying stream

Methods inherited from class javax.media.protocol.DataSource

getLocator, initCheck, setLocator

Methods inherited from class java.lang.Object

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

Field Detail

started

protected boolean started

connected

protected boolean connected

duration

protected javax.media.Time duration

streams

protected AlsaStream[] streams

stream

protected AlsaStream stream

Constructor Detail

DataSource

public DataSource()

Constructs a new ALSA DataSource.

Method Detail

getContentType

public String getContentType()

Gets the type of the content made available by this DataSource (i.e. raw).

Specified by:

getContentType in class javax.media.protocol.DataSource

Returns:

the type of the content made available by this DataSource (i.e. raw)

connect

public void connect()
             throws IOException

Connect the datasource

Specified by:

connect in class javax.media.protocol.DataSource

Throws:

IOException

disconnect

public void disconnect()

Disconnect the datasource

Specified by:

disconnect in class javax.media.protocol.DataSource

start

public void start()
           throws IOException

Start the datasource and the underlying stream

Specified by:

start in class javax.media.protocol.DataSource

Throws:

IOException

stop

public void stop()
          throws IOException

Stop the datasource and it's underlying stream

Specified by:

stop in class javax.media.protocol.DataSource

Throws:

IOException

getControls

public Object[] getControls()

Gives control information to the caller.

Specified by:

getControls in interface javax.media.Controls

Specified by:

getControls in class javax.media.protocol.DataSource

getControl

public Object getControl(String controlType)

Return required control from the Control[] array if exists, that is

Specified by:

getControl in interface javax.media.Controls

Specified by:

getControl in class javax.media.protocol.DataSource

getDuration

public javax.media.Time getDuration()

Gives to the caller the duration information of our stream Which is, obviously unknown. Better turn on that premonition switch again, Mrs Cake.

Specified by:

getDuration in interface javax.media.Duration

Specified by:

getDuration in class javax.media.protocol.DataSource

Returns:

DURATION_UNKNOWN

getStreams

public javax.media.protocol.PushBufferStream[] getStreams()

Returns an array of PushBufferStream containing all the streams i.e. only one in our case : only sound If no stream actually exists, instanciate one on the fly

Specified by:

getStreams in class javax.media.protocol.PushBufferDataSource

Returns:

Array of one stream