ptolemy.actor.lib.jmf
Class StreamLoader
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.StreamLoader
- All Implemented Interfaces:
- java.io.Serializable, java.lang.Cloneable, Actor, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable
public class StreamLoader
- extends Source
Load a datasource from a URL.
This actor generates an ObjectToken that contains a DataSource.
This actor is typically connected to a VideoPlayer actor.
- Since:
- Ptolemy II 4.0
- Version:
- $Id: StreamLoader.java 43472 2006-08-21 23:16:56Z cxh $
- Author:
- James Yeh
- See Also:
- Serialized Form
- Accepted Rating:
- Proposed Rating:
| Fields inherited from class ptolemy.kernel.util.NamedObj |
_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS |
|
Constructor Summary |
StreamLoader(CompositeEntity container,
java.lang.String name)
Construct an actor with the given container and name. |
|
Method Summary |
void |
initialize()
Initialize this actor. |
boolean |
postfire()
Return true, unless stop() has been called, in which case,
return false. |
| 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.util.NamedObj |
_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _debug, _debug, _debug, _debug, _debug, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _propagateValue, _recordDecoratedAttributes, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, attributeChanged, 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 |
fileOrURL
public FileParameter fileOrURL
- The file or URL that it to be read.
_dataSource
private javax.media.protocol.DataSource _dataSource
StreamLoader
public StreamLoader(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.
initialize
public void initialize()
throws IllegalActionException
- Description copied from class:
AtomicActor
- Initialize this actor. Derived classes override this method
to perform actions that should occur once at the beginning of
an execution, but after type resolution. Derived classes can
produce output data and schedule events.
- Specified by:
initialize in interface Initializable- Overrides:
initialize in class AtomicActor
- Throws:
IllegalActionException - If a derived class throws it.
postfire
public boolean postfire()
throws IllegalActionException
- Description copied from class:
AtomicActor
- Return true, unless stop() has been called, in which case,
return false. Derived classes override this method to define
operations to be performed at the end of every iteration of
its execution, after one invocation of the prefire() method
and any number of invocations of the fire() method.
This method typically wraps up an iteration, which may
involve updating local state. In derived classes,
this method returns false to indicate that this actor should not
be fired again.
- Specified by:
postfire in interface Executable- Overrides:
postfire in class AtomicActor
- Returns:
- True if execution can continue into the next iteration.
- Throws:
IllegalActionException - Not thrown in this base class.