org.jitsi.impl.neomedia.protocol

Class PullBufferDataSourceDelegate<T extends javax.media.protocol.DataSource>

java.lang.Object

javax.media.protocol.DataSource

javax.media.protocol.PullBufferDataSource

org.jitsi.impl.neomedia.protocol.CaptureDeviceDelegatePullBufferDataSource

org.jitsi.impl.neomedia.protocol.PullBufferDataSourceDelegate<T>

Type Parameters:

T - the very type of DataSource to be wrapped in a PullBufferDataSourceDelegate

All Implemented Interfaces:

javax.media.Controls, javax.media.Duration, javax.media.protocol.CaptureDevice

Direct Known Subclasses:

RewritablePullBufferDataSource

public abstract class PullBufferDataSourceDelegate<T extends javax.media.protocol.DataSource>
extends CaptureDeviceDelegatePullBufferDataSource

Implements most of PullBufferDataSource for a particular DataSource and requires extenders to only implement PullBufferDataSource.getStreams(). Intended to allow easier overriding of the streams returned by a DataSource.

Author:

Damian Minkov

Field Summary

Fields

Modifier and Type	Field and Description
protected T	dataSource The wrapped DataSource this instance delegates to.

Fields inherited from class org.jitsi.impl.neomedia.protocol.CaptureDeviceDelegatePullBufferDataSource

captureDevice, EMPTY_STREAMS

Fields inherited from interface javax.media.Duration

DURATION_UNBOUNDED, DURATION_UNKNOWN

Constructor Summary

Constructors

Constructor and Description
PullBufferDataSourceDelegate(T dataSource) Initializes a new PullBufferDataSourceDelegate which is to delegate to a specific DataSource.

Method Summary

Modifier and Type	Method and Description
void	connect() Implements DataSource.connect().
void	disconnect() Implements DataSource.disconnect().
String	getContentType() Implements DataSource.getContentType().
Object	getControl(String controlType) Implements Controls.getControl(String).
Object[]	getControls() Implements Controls.getControls().
T	getDataSource() Gets the DataSource wrapped by this instance.
javax.media.Time	getDuration() Implements Duration.getDuration().
javax.media.MediaLocator	getLocator() Implements DataSource.getLocator().
abstract javax.media.protocol.PullBufferStream[]	getStreams() Gets the PullBufferStreams through which this PullBufferDataSource gives access to its media data.
void	start() Implements DataSource.start().
void	stop() Implements DataSource.stop().

Methods inherited from class org.jitsi.impl.neomedia.protocol.CaptureDeviceDelegatePullBufferDataSource

getCaptureDeviceInfo, getFormatControls

Methods inherited from class javax.media.protocol.DataSource

initCheck, setLocator

Methods inherited from class java.lang.Object

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

Field Detail

dataSource

protected final T extends javax.media.protocol.DataSource dataSource

The wrapped DataSource this instance delegates to.

Constructor Detail

PullBufferDataSourceDelegate

public PullBufferDataSourceDelegate(T dataSource)

Initializes a new PullBufferDataSourceDelegate which is to delegate to a specific DataSource.

Parameters:

dataSource - the DataSource the new instance is to delegate to

Method Detail

connect

public void connect()
             throws IOException

Implements DataSource.connect(). Delegates to the wrapped DataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.connect() because the wrapped DataSource may not be a CaptureDevice yet it still needs to be connected.

Specified by:

connect in interface javax.media.protocol.CaptureDevice

Overrides:

connect in class CaptureDeviceDelegatePullBufferDataSource

Throws:

IOException - if the wrapped DataSource throws such an exception

disconnect

public void disconnect()

Implements DataSource.disconnect(). Delegates to the wrapped DataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.disconnect() because the wrapped DataSource may not be a CaptureDevice yet it still needs to be disconnected.

Specified by:

disconnect in interface javax.media.protocol.CaptureDevice

Overrides:

disconnect in class CaptureDeviceDelegatePullBufferDataSource

getContentType

public String getContentType()

Implements DataSource.getContentType(). Delegates to the wrapped DataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.getContentType() because the wrapped DataSource may not be a CaptureDevice yet it still needs to report the content type.

Overrides:

getContentType in class CaptureDeviceDelegatePullBufferDataSource

Returns:

a String value which describes the content type of the wrapped DataSource

getLocator

public javax.media.MediaLocator getLocator()

Implements DataSource.getLocator(). Delegates to the wrapped DataSource.

Overrides:

getLocator in class javax.media.protocol.DataSource

Returns:

a MediaLocator value which describes the locator of the wrapped DataSource

getControl

public Object getControl(String controlType)

Implements Controls.getControl(String). Delegates to the wrapped DataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.getControl(String) because the wrapped DataSource may not be a CaptureDevice yet it still needs to give access to the control.

Specified by:

getControl in interface javax.media.Controls

Overrides:

getControl in class CaptureDeviceDelegatePullBufferDataSource

Parameters:

controlType - a String value which names the type of the control to be retrieved

Returns:

an Object which represents the control of the requested controlType of the wrapped DataSource

getControls

public Object[] getControls()

Implements Controls.getControls(). Delegates to the wrapped PullBufferDataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.getControls() because the wrapped DataSource may not be a CaptureDevice yet it still needs to give access to the controls.

Specified by:

getControls in interface javax.media.Controls

Overrides:

getControls in class CaptureDeviceDelegatePullBufferDataSource

Returns:

an array of Objects which represent the controls of the wrapped DataSource

getDataSource

public T getDataSource()

Gets the DataSource wrapped by this instance.

Returns:

the DataSource wrapped by this instance

getDuration

public javax.media.Time getDuration()

Implements Duration.getDuration(). Delegates to the wrapped DataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.getDuration() because the wrapped DataSource may not be a CaptureDevice yet it still needs to report the duration.

Specified by:

getDuration in interface javax.media.Duration

Overrides:

getDuration in class CaptureDeviceDelegatePullBufferDataSource

Returns:

the duration of the wrapped DataSource

getStreams

public abstract javax.media.protocol.PullBufferStream[] getStreams()

Gets the PullBufferStreams through which this PullBufferDataSource gives access to its media data.

Overrides:

getStreams in class CaptureDeviceDelegatePullBufferDataSource

Returns:

an array of PullBufferStreams through which this PullBufferDataSource gives access to its media data

start

public void start()
           throws IOException

Implements DataSource.start(). Delegates to the wrapped DataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.start() because the wrapped DataSource may not be a CaptureDevice yet it still needs to be started.

Specified by:

start in interface javax.media.protocol.CaptureDevice

Overrides:

start in class CaptureDeviceDelegatePullBufferDataSource

Throws:

IOException - if the wrapped DataSource throws such an exception

stop

public void stop()
          throws IOException

Implements DataSource.stop(). Delegates to the wrapped DataSource. Overrides CaptureDeviceDelegatePullBufferDataSource.stop() because the wrapped DataSource may not be a CaptureDevice yet it still needs to be stopped.

Specified by:

stop in interface javax.media.protocol.CaptureDevice

Overrides:

stop in class CaptureDeviceDelegatePullBufferDataSource

Throws:

IOException - if the wrapped DataSource throws such an exception