Package org.jitsi.impl.neomedia.jmfext.media.protocol.imgstreaming

Class DataSource

java.lang.Object

javax.media.protocol.DataSource

javax.media.protocol.PullBufferDataSource

org.jitsi.impl.neomedia.jmfext.media.protocol.AbstractPullBufferCaptureDevice

org.jitsi.impl.neomedia.jmfext.media.protocol.AbstractVideoPullBufferCaptureDevice

org.jitsi.impl.neomedia.jmfext.media.protocol.imgstreaming.DataSource

All Implemented Interfaces:

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

public class DataSource
extends AbstractVideoPullBufferCaptureDevice

Implements CaptureDevice and DataSource for the purposes of image and desktop streaming.

Author:

Sebastien Vincent, Lyubomir Marinov, Damian Minkov

Field Summary

Fields inherited from interface javax.media.Duration

DURATION_UNBOUNDED, DURATION_UNKNOWN

Constructor Summary

Constructors

Constructor	Description
DataSource()	Initializes a new DataSource instance.
DataSource(javax.media.MediaLocator locator)	Initializes a new DataSource instance from a specific MediaLocator.

Method Summary

Modifier and Type	Method	Description
protected ImageStream	createStream(int streamIndex, javax.media.control.FormatControl formatControl)	Creates a new PullBufferStream which is to be at a specific zero-based index in the list of streams of this PullBufferDataSource.
Object	getControl(String controlType)	Gets the control of the specified type available for this instance.
void	setOrigin(int streamIndex, int displayIndex, int x, int y)	Set the display index and the origin of the ImageStream associated with a specific index in this DataSource.

Methods inherited from class org.jitsi.impl.neomedia.jmfext.media.protocol.AbstractVideoPullBufferCaptureDevice

createFrameRateControl

Methods inherited from class org.jitsi.impl.neomedia.jmfext.media.protocol.AbstractPullBufferCaptureDevice

connect, disconnect, doConnect, doDisconnect, doStart, doStop, getCaptureDeviceInfo, getContentType, getControls, getDuration, getFormat, getFormatControls, getStreams, getStreamSyncRoot, getSupportedFormats, setCaptureDeviceInfo, setFormat, start, stop, streams

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

Constructor Detail

DataSource

public DataSource()

Initializes a new DataSource instance.

DataSource

public DataSource(javax.media.MediaLocator locator)

Initializes a new DataSource instance from a specific MediaLocator.

Parameters:

locator - the MediaLocator to initialize the new instance from

Method Detail

createStream

protected ImageStream createStream(int streamIndex,
                                   javax.media.control.FormatControl formatControl)

Creates a new PullBufferStream which is to be at a specific zero-based index in the list of streams of this PullBufferDataSource. The Format-related information of the new instance is to be abstracted by a specific FormatControl.

Specified by:

createStream in class AbstractPullBufferCaptureDevice

Parameters:

streamIndex - the zero-based index of the PullBufferStream in the list of streams of this PullBufferDataSource

formatControl - the FormatControl which is to abstract the Format-related information of the new instance

Returns:

a new PullBufferStream which is to be at the specified streamIndex in the list of streams of this PullBufferDataSource and which has its Format-related information abstracted by the specified formatControl

See Also:

AbstractPullBufferCaptureDevice.createStream(int, FormatControl)

getControl

public Object getControl(String controlType)

Gets the control of the specified type available for this instance.

Specified by:

getControl in interface javax.media.Controls

Overrides:

getControl in class AbstractPullBufferCaptureDevice

Parameters:

controlType - the type of the control available for this instance to be retrieved

Returns:

an Object which represents the control of the specified type available for this instance if such a control is indeed available; otherwise, null

setOrigin

public void setOrigin(int streamIndex,
                      int displayIndex,
                      int x,
                      int y)

Set the display index and the origin of the ImageStream associated with a specific index in this DataSource.

Parameters:

streamIndex - the index in this DataSource of the ImageStream to set the display index and the origin of

displayIndex - the display index to set on the specified ImageStream

x - the x coordinate of the origin to set on the specified ImageStream

y - the y coordinate of the origin to set on the specified ImageStream