ptolemy.actor.lib.javasound
Class ClipPlayer

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.javasound.ClipPlayer

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.sound.sampled.LineListener, Actor, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

public class ClipPlayer
extends TypedAtomicActor
implements javax.sound.sampled.LineListener

An actor that plays an audio clip given in a file. If the overlay parameter is false (the default), then it will terminate any previously playing clip before playing the new instance. Otherwise, it will mix in the new instance with the currently playing clip.

Since:

Ptolemy II 6.1

Version:

$Id: ClipPlayer.java,v 1.6.4.2 2008/03/25 22:32:53 cxh Exp $

Author:

Edward A. Lee

See Also:

LiveSound, AudioCapture, AudioReader, AudioWriter, Serialized Form

Accepted Rating:

Red (eal)

Proposed Rating:

Yellow (eal)

Nested Class Summary

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

Entity.ContainedObjectsIterator

Field Summary

protected java.util.List<javax.sound.sampled.Clip>	_clips The clip to playback.
FileParameter	fileOrURL The file or URL giving the audio clip.
TypedIOPort	output Output port used to indicate starts and stops.
Parameter	overlay If true, then if the actor fires before the previous clip has finished playing, then a new instance of the clip will be played on top of the tail of the previous instance, as long as the underlying mixer supports adding additional clips.
TypedIOPort	trigger The 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

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

Method Summary

void	fire() Produce outputs indicating that the clip has started or stopped.
boolean	postfire() Read an input array and send to the audio hardware.
void	update(javax.sound.sampled.LineEvent event) Called to notify this object of changes in the status of a clip.
void	wrapup() Stop audio playback and free up any audio resources used for audio playback.

Methods inherited from class ptolemy.actor.TypedAtomicActor

_addPort, attributeTypeChanged, clone, newPort, typeConstraintList

Methods inherited from class ptolemy.actor.AtomicActor

_actorFiring, _actorFiring, _createReceivers, addActorFiringListener, addInitializable, clone, connectionsChanged, getDirector, getExecutiveDirector, getFunctionDependency, getManager, initialize, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, prefire, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate

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, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, attributeChanged, attributeList, attributeList, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttributes, getChangeListeners, getClassName, getDerivedLevel, getDerivedList, getDisplayName, getFullName, getModelErrorHandler, getName, getName, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, 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

getDirector, getExecutiveDirector, getFunctionDependency, getManager, inputPortList, newReceiver, outputPortList

Methods inherited from interface ptolemy.actor.Executable

isFireFunctional, isStrict, iterate, prefire, stop, stopFire, terminate

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, initialize, preinitialize, removeInitializable

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 or URL giving the audio clip. This is set by default to a file containing a voice signal.

output

public TypedIOPort output

Output port used to indicate starts and stops. This is a boolean port. A true output indicates that a clip has been started, and a false output indicates that one has stopped.

overlay

public Parameter overlay

If true, then if the actor fires before the previous clip has finished playing, then a new instance of the clip will be played on top of the tail of the previous instance, as long as the underlying mixer supports adding additional clips. This is a boolean that is false by default, which means that the clip is stopped and restarted each time the actor fires.

trigger

public TypedIOPort trigger

The trigger. When this port receives a token of any type, the actor begins playing the audio clip.

_clips

protected java.util.List<javax.sound.sampled.Clip> _clips

The clip to playback.

Constructor Detail

ClipPlayer

public ClipPlayer(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

fire

public void fire()
          throws IllegalActionException

Produce outputs indicating that the clip has started or stopped.

Specified by:

fire in interface Executable

Overrides:

fire in class AtomicActor

Throws:

IllegalActionException - Not thrown in this class.

postfire

public boolean postfire()
                 throws IllegalActionException

Read an input array and send to the audio hardware. If the audio buffer cannot accept the samples, then this method will stall the calling thread until it can.

Specified by:

postfire in interface Executable

Overrides:

postfire in class AtomicActor

Returns:

True if execution can continue into the next iteration.

Throws:

IllegalActionException - If there is a problem playing audio.

update

public void update(javax.sound.sampled.LineEvent event)

Called to notify this object of changes in the status of a clip.

Specified by:

update in interface javax.sound.sampled.LineListener

Parameters:

event - The event, with one of type OPEN, CLOSE, START, STOP of class LineEvent.Type.

wrapup

public void wrapup()
            throws IllegalActionException

Stop audio playback and free up any audio resources used for audio playback.

Specified by:

wrapup in interface Initializable

Overrides:

wrapup in class AtomicActor

Throws:

IllegalActionException - If there is a problem stopping audio playback.