net.java.sip.communicator.impl.neomedia.jmfext.media.protocol
Class AbstractVideoPullBufferStream

java.lang.Object
  net.java.sip.communicator.impl.neomedia.control.AbstractControls
      net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.AbstractBufferStream
          net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.AbstractPullBufferStream
              net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.AbstractVideoPullBufferStream

All Implemented Interfaces:

javax.media.Controls, javax.media.protocol.PullBufferStream, javax.media.protocol.SourceStream

Direct Known Subclasses:

ImageStream, Video4Linux2Stream

public abstract class AbstractVideoPullBufferStream
extends AbstractPullBufferStream

Provides a base implementation of PullBufferStream for video in order to facilitate implementers by taking care of boilerplate in the most common cases.

Author:

Lyubomir Marinov

Field Summary

Fields inherited from class net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.AbstractBufferStream

dataSource, formatControl

Fields inherited from interface javax.media.protocol.SourceStream

LENGTH_UNKNOWN

Constructor Summary

protected

AbstractVideoPullBufferStream(javax.media.protocol.PullBufferDataSource dataSource, javax.media.control.FormatControl formatControl) Initializes a new AbstractVideoPullBufferStream instance which is to have its Format-related information abstracted by a specific FormatControl.

Method Summary

protected abstract void	doRead(javax.media.Buffer buffer) Blocks and reads into a Buffer from this PullBufferStream.
void	read(javax.media.Buffer buffer) Blocks and reads into a Buffer from this PullBufferStream.
void	start() Starts the transfer of media data from this AbstractBufferStream.
void	stop() Stops the transfer of media data from this AbstractBufferStream.

Methods inherited from class net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.AbstractPullBufferStream

willReadBlock

Methods inherited from class net.java.sip.communicator.impl.neomedia.jmfext.media.protocol.AbstractBufferStream

close, doGetFormat, doSetFormat, endOfStream, getContentDescriptor, getContentLength, getControls, getFormat, internalGetFormat, internalSetFormat

Methods inherited from class net.java.sip.communicator.impl.neomedia.control.AbstractControls

getControl, getControl

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.media.protocol.PullBufferStream

getFormat

Methods inherited from interface javax.media.protocol.SourceStream

endOfStream, getContentDescriptor, getContentLength

Methods inherited from interface javax.media.Controls

getControl, getControls

Constructor Detail

AbstractVideoPullBufferStream

protected AbstractVideoPullBufferStream(javax.media.protocol.PullBufferDataSource dataSource,
                                        javax.media.control.FormatControl formatControl)

Initializes a new AbstractVideoPullBufferStream instance which is to have its Format-related information abstracted by a specific FormatControl.

Parameters:

dataSource - the PullBufferDataSource which is creating the new instance so that it becomes one of its streams

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

Method Detail

doRead

protected abstract void doRead(javax.media.Buffer buffer)
                        throws IOException

Blocks and reads into a Buffer from this PullBufferStream.

Parameters:

buffer - the Buffer this PullBufferStream is to read into

Throws:

IOException - if an I/O error occurs while this PullBufferStream reads into the specified Buffer

read

public void read(javax.media.Buffer buffer)
          throws IOException

Blocks and reads into a Buffer from this PullBufferStream.

Parameters:

buffer - the Buffer this PullBufferStream is to read into

Throws:

IOException - if an I/O error occurs while this PullBufferStream reads into the specified Buffer

start

public void start()
           throws IOException

Starts the transfer of media data from this AbstractBufferStream.

Overrides:

start in class AbstractBufferStream

Throws:

IOException - if anything goes wrong while starting the transfer of media data from this AbstractBufferStream

See Also:

AbstractBufferStream.start()

stop

public void stop()
          throws IOException

Stops the transfer of media data from this AbstractBufferStream.

Overrides:

stop in class AbstractBufferStream

Throws:

IOException - if anything goes wrong while stopping the transfer of media data from this AbstractBufferStream

See Also:

AbstractBufferStream.stop()