ptolemy.actor.lib.jmf
Class MovieReader

java.lang.Object
  ptolemy.kernel.util.NamedObj
      ptolemy.kernel.InstantiableNamedObj
          ptolemy.kernel.Entity
              ptolemy.kernel.ComponentEntity
                  ptolemy.actor.AtomicActor
                      ptolemy.actor.TypedAtomicActor
                          ptolemy.actor.lib.Source
                              ptolemy.actor.lib.jmf.MovieReader

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, javax.media.ControllerListener, Actor, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

public class MovieReader
extends Source
implements javax.media.ControllerListener

This actor loads a video file (MPEG, AVI, or Quicktime files only), and outputs each frame as a JMFImageToken.

Note that not all formats are supported, for details, see the JMF faq at: http://java.sun.com/products/java-media/jmf/reference/faqs/index.html

Since:

Ptolemy II 4.0

Version:

$Id: MovieReader.java 57040 2010-01-27 20:52:32Z cxh $

Author:

James Yeh

See Also:

Serialized Form

Accepted Rating:

Red (cxh)

Proposed Rating:

Red (cxh)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.Entity

Entity.ContainedObjectsIterator

Field Summary

private javax.media.protocol.DataSource	_dataSource
private javax.media.Buffer	_frame
private javax.media.control.FrameGrabbingControl	_frameGrabbingControl
private javax.media.control.FramePositioningControl	_framePositioningControl
private javax.media.Player	_player
private boolean	_playerOpen
private javax.media.ControllerEvent	_stateTransitionEvent
private boolean	_stateTransitionOK
private java.lang.Object	_waitSync
FileParameter	fileOrURL The file name or URL from which to read.

Fields inherited from class ptolemy.actor.lib.Source

output, trigger

Fields inherited from class ptolemy.actor.AtomicActor

_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS

Fields inherited from interface ptolemy.actor.Executable

COMPLETED, NOT_READY, STOP_ITERATING

Constructor Summary

MovieReader(CompositeEntity container, java.lang.String name)
Construct an actor with the given container and name.

Method Summary

private java.lang.String	_controlNames()
protected boolean	_waitForState(int state) Block until the processor has transitioned to the given state.
void	attributeChanged(Attribute attribute) An attempt is made to acquire the file name.
void	controllerUpdate(javax.media.ControllerEvent event) The controller listener.
void	fire() Send a JMFImageToken out through the output port.
void	initialize() An attempt is made to acquire both the frame grabbing and frame positioning controls.
boolean	postfire() If the player is no longer open, then disconnect the datasource.

Methods inherited from class ptolemy.actor.lib.Source

prefire

Methods inherited from class ptolemy.actor.TypedAtomicActor

_addPort, _fireAt, _fireAt, attributeTypeChanged, clone, newPort, typeConstraintList, typeConstraints

Methods inherited from class ptolemy.actor.AtomicActor

_actorFiring, _actorFiring, addActorFiringListener, addInitializable, clone, connectionsChanged, createReceivers, declareDelayDependency, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate, wrapup

Methods inherited from class ptolemy.kernel.ComponentEntity

_adjustDeferrals, _checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, isAtomic, isOpaque, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, propagateExistence, setName

Methods inherited from class ptolemy.kernel.Entity

_description, _exportMoMLContents, _removePort, _validateSettables, connectedPortList, connectedPorts, containedObjectsIterator, getAttribute, getPort, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts, setClassDefinition, uniqueName

Methods inherited from class ptolemy.kernel.InstantiableNamedObj

_setParent, exportMoML, getChildren, getElementName, getParent, getPrototypeList, isClassDefinition, isWithinClassDefinition

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _debug, _debug, _debug, _debug, _debug, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _propagateValue, _recordDecoratedAttributes, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, attributeList, attributeList, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttributes, getChangeListeners, getClassName, getDecoratorAttribute, getDecoratorAttributes, getDerivedLevel, getDerivedList, getDisplayName, getFullName, getModelErrorHandler, getName, getName, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, lazyContainedObjectsIterator, message, propagateValue, propagateValues, removeChangeListener, removeDebugListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, toString, validateSettables, workspace

Methods inherited from class java.lang.Object

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

Methods inherited from interface ptolemy.actor.Actor

createReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, newReceiver, outputPortList

Methods inherited from interface ptolemy.actor.Executable

isFireFunctional, isStrict, iterate, stop, stopFire, terminate

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, preinitialize, removeInitializable, wrapup

Methods inherited from interface ptolemy.kernel.util.Nameable

description, getContainer, getDisplayName, getFullName, getName, getName, setName

Methods inherited from interface ptolemy.kernel.util.Derivable

getDerivedLevel, getDerivedList, propagateValue

Field Detail

fileOrURL

public FileParameter fileOrURL

The file name or URL from which to read. This is a string with any form accepted by File Attribute. The default value is the string "file:///C:/program%20files/quicktime/Sample.mov".

See Also:

FileParameter

_dataSource

private javax.media.protocol.DataSource _dataSource

_frame

private javax.media.Buffer _frame

_frameGrabbingControl

private javax.media.control.FrameGrabbingControl _frameGrabbingControl

_framePositioningControl

private javax.media.control.FramePositioningControl _framePositioningControl

_player

private javax.media.Player _player

_playerOpen

private boolean _playerOpen

_stateTransitionEvent

private javax.media.ControllerEvent _stateTransitionEvent

_stateTransitionOK

private boolean _stateTransitionOK

_waitSync

private java.lang.Object _waitSync

Constructor Detail

MovieReader

public MovieReader(CompositeEntity container,
                   java.lang.String name)
            throws IllegalActionException,
                   NameDuplicationException

Construct an actor with the given container and name.

Parameters:

container - The container.

name - The name of this actor.

Throws:

IllegalActionException - If the actor cannot be contained by the proposed container.

NameDuplicationException - If the container already has an actor with this name.

Method Detail

attributeChanged

public void attributeChanged(Attribute attribute)
                      throws IllegalActionException

An attempt is made to acquire the file name. If it is successful, create the DataSource that encapsulates the file.

Overrides:

attributeChanged in class NamedObj

Parameters:

attribute - The attribute that changed.

Throws:

IllegalActionException - If the URL is null, or invalid.

controllerUpdate

public void controllerUpdate(javax.media.ControllerEvent event)

The controller listener. This method controls the initializing of the player. It also senses when the file is done playing, in which case it closes the player.

Specified by:

controllerUpdate in interface javax.media.ControllerListener

Parameters:

event - The controller event.

fire

public void fire()
          throws IllegalActionException

Send a JMFImageToken out through the output port.

Specified by:

fire in interface Executable

Overrides:

fire in class Source

Throws:

IllegalActionException - If there's no director.

initialize

public void initialize()
                throws IllegalActionException

An attempt is made to acquire both the frame grabbing and frame positioning controls. If both succeed, the first frame is acquired.

Specified by:

initialize in interface Initializable

Overrides:

initialize in class AtomicActor

Throws:

IllegalActionException - If the either frame grabbing control or frame positioning control cannot be acquired, or if a contained method throws it.

postfire

public boolean postfire()
                 throws IllegalActionException

If the player is no longer open, then disconnect the datasource. If the player is still open, acquire the next frame.

Specified by:

postfire in interface Executable

Overrides:

postfire in class AtomicActor

Returns:

false if the player is no longer open, otherwise return super.postfire().

Throws:

IllegalActionException - If thrown by the super class.

_waitForState

protected boolean _waitForState(int state)
                         throws IllegalActionException

Block until the processor has transitioned to the given state.

Parameters:

state - The state.

Returns:

false if the transition failed.

Throws:

IllegalActionException - If there is a problem blocking the processor until the state transition is completed.

_controlNames

private java.lang.String _controlNames()