ptolemy.domains.sdf.lib
Class DelayLine
java.lang.Object
ptolemy.kernel.util.NamedObj
ptolemy.kernel.InstantiableNamedObj
ptolemy.kernel.Entity
ptolemy.kernel.ComponentEntity
ptolemy.actor.AtomicActor
ptolemy.actor.TypedAtomicActor
ptolemy.domains.sdf.lib.SDFTransformer
ptolemy.domains.sdf.lib.DelayLine
- All Implemented Interfaces:
- java.io.Serializable, java.lang.Cloneable, Actor, Executable, FiringsRecordable, Initializable, SequenceActor, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable
public class DelayLine
- extends SDFTransformer
This actor reads tokens from its input port, and for each token read
outputs an array that contains the current token as the first token,
followed by some number of previously read tokens. The length of the
output array is the same as that of the array in the initialValues
parameter. That parameter also provides the initial values when there
are no previously read tokens.
Note that this actor is not a simple sample delay.
Use the SampleDelay actor to achieve a simple sample delay.
- Since:
- Ptolemy II 1.0
- Version:
- $Id: DelayLine.java 57040 2010-01-27 20:52:32Z cxh $
- Author:
- Steve Neuendorffer
- See Also:
SampleDelay
,
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 |
DelayLine(CompositeEntity container,
java.lang.String name)
Construct an actor with the given container and name. |
Method Summary |
void |
attributeTypeChanged(Attribute attribute)
Override the base class to allow type changes on
initialValues. |
java.lang.Object |
clone(Workspace workspace)
Clone the actor into the specified workspace. |
void |
fire()
Consume a token from the input, push it onto the delay line
and produce the output ArrayToken containing the current state of
the delay line. |
void |
initialize()
Initialize this actor by reading the value of initialValues. |
Methods inherited from class ptolemy.actor.AtomicActor |
_actorFiring, _actorFiring, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, declareDelayDependency, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, postfire, 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 |
initialValues
public Parameter initialValues
- The initial values of the delay line.
This parameter must contain an ArrayToken.
The default value is an array that contains 4 integer tokens.
Changes to this parameter after initialize() has been invoked
are ignored until the next execution of the model.
_delayLine
private Token[] _delayLine
- The delay line.
DelayLine
public DelayLine(CompositeEntity container,
java.lang.String name)
throws NameDuplicationException,
IllegalActionException
- 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.
attributeTypeChanged
public void attributeTypeChanged(Attribute attribute)
throws IllegalActionException
- Override the base class to allow type changes on
initialValues.
- Overrides:
attributeTypeChanged
in class TypedAtomicActor
- Parameters:
attribute
- The attribute whose type changed.
- Throws:
IllegalActionException
- If type changes are not
allowed on the specified attribute.
clone
public java.lang.Object clone(Workspace workspace)
throws java.lang.CloneNotSupportedException
- Clone the actor into the specified workspace. This overrides the
base class to handle type constraints.
- Overrides:
clone
in class AtomicActor
- Parameters:
workspace
- The workspace for the new object.
- Returns:
- A new actor.
- Throws:
java.lang.CloneNotSupportedException
- If a derived class contains
an attribute that cannot be cloned.- See Also:
NamedObj.exportMoML(Writer, int, String)
,
NamedObj.setDeferringChangeRequests(boolean)
fire
public void fire()
throws IllegalActionException
- Consume a token from the input, push it onto the delay line
and produce the output ArrayToken containing the current state of
the delay line.
- Specified by:
fire
in interface Executable
- Overrides:
fire
in class AtomicActor
- Throws:
IllegalActionException
- If not enough tokens are available.
initialize
public void initialize()
throws IllegalActionException
- Initialize this actor by reading the value of initialValues.
- Specified by:
initialize
in interface Initializable
- Overrides:
initialize
in class AtomicActor
- Throws:
IllegalActionException
- If a derived class throws it.