ptolemy.actor.lib.vhdl

Class FixTransformer

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.InstantiableNamedObj

ptolemy.kernel.Entity<T>

ptolemy.kernel.ComponentEntity<T>

ptolemy.actor.AtomicActor<TypedIOPort>

ptolemy.actor.TypedAtomicActor

ptolemy.actor.lib.vhdl.FixTransformer

All Implemented Interfaces:

java.lang.Cloneable, Actor, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

Direct Known Subclasses:

Concat, FixConst, FixSequence, Slice, SynchronousFixTransformer

public class FixTransformer
extends TypedAtomicActor

This is an abstract base class for actors that transform an input stream into output stream. It provides an fix point input and an fix point output port, and manages the cloning of these ports.

Since:

Ptolemy II 6.0

Version:

$Id$

Author:

Man-Kit Leung

Pt.AcceptedRating:

Red (mankit)

Pt.ProposedRating:

Red (mankit)

Nested Class Summary

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

Entity.ContainedObjectsIterator

Field Summary

Fields

Modifier and Type	Field and Description
QueuedTypedIOPort	output Queued output to simulate pipelined add.

Fields inherited from class ptolemy.actor.TypedAtomicActor

_typesValid

Fields inherited from class ptolemy.actor.AtomicActor

_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _deferChangeRequests, _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

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected void	_checkFixMaxValue(FixToken token, int max) Verify that the bit width of the given fix-point token is equal to the minimum bit width that is required to represent the given value.
protected void	_checkFixTokenWidth(FixToken token, int width) Verify that the bit width of the given FixToken is equal to the given width.
protected void	_setAndHideQuantizationParameters(java.lang.String precisionString, java.lang.String overflowString, java.lang.String roundingString) Set quantization parameters of the output port with the given parameter expression strings.
protected void	_setQuantizationParameters(java.lang.String precisionString, java.lang.String overflowString, java.lang.String roundingString) Set quantization parameters for the output port.
protected void	_showQuantizationParameters(boolean showPrecision, boolean showOverflow, boolean showRounding) Set the visibility of the precision, overflow and rounding parameters.
java.lang.String	getPortPrecision(IOPort port) Return the precision string of the given port.
QueuedTypedIOPort	newFixOutputPort(java.lang.String name) Create a new fix point type output port with given the name.
void	sendOutput(TypedIOPort port, int channel, Token token) Send the quantized output token according the output precision, overflow and rounding parameters of the output port.

Methods inherited from class ptolemy.actor.TypedAtomicActor

_containedTypeConstraints, _customTypeConstraints, _defaultTypeConstraints, _fireAt, _fireAt, attributeTypeChanged, clone, clone, isBackwardTypeInferenceEnabled, newPort, typeConstraintList, typeConstraints

Methods inherited from class ptolemy.actor.AtomicActor

_actorFiring, _actorFiring, _declareDelayDependency, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, declareDelayDependency, fire, getCausalityInterface, getDirector, getExecutiveDirector, getManager, initialize, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, postfire, prefire, 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

_addPort, _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, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, attributeChanged, attributeDeleted, attributeList, attributeList, decorators, 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, notifyOfNameChange, propagateValue, propagateValues, removeAttribute, removeChangeListener, removeDebugListener, removeHierarchyListener, 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

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

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, initialize, 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

output

public QueuedTypedIOPort output

Queued output to simulate pipelined add. The output is fix point type.

Constructor Detail

FixTransformer

public FixTransformer(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.

Method Detail

getPortPrecision

public java.lang.String getPortPrecision(IOPort port)
                                  throws IllegalActionException

Return the precision string of the given port.

Parameters:

port - The given port.

Returns:

The precision string.

Throws:

IllegalActionException - Thrown if there is no precision parameter for the given port.

sendOutput

public void sendOutput(TypedIOPort port,
                       int channel,
                       Token token)
                throws NoRoomException,
                       IllegalActionException

Send the quantized output token according the output precision, overflow and rounding parameters of the output port.

Parameters:

channel - The given channel to send the output token.

port - The given output port.

token - The given output token.

Throws:

IllegalActionException - If the token to be sent cannot be converted to the type of this port, or if the token is null.

NoRoomException - If there is no room in the receiver.

newFixOutputPort

public QueuedTypedIOPort newFixOutputPort(java.lang.String name)
                                   throws IllegalActionException,
                                          NameDuplicationException

Create a new fix point type output port with given the name. The container of the created port is this actor. This also create a new precision parameter associated with this port.

Parameters:

name - The given name of the port.

Returns:

The new output port.

Throws:

IllegalActionException - If parameters cannot be created.

NameDuplicationException - If a parameter with the same name already exists.

_checkFixTokenWidth

protected void _checkFixTokenWidth(FixToken token,
                                   int width)
                            throws IllegalActionException

Verify that the bit width of the given FixToken is equal to the given width. If not, an IllegalActionException is thrown.

Parameters:

token - The given fix-point token.

width - The given width.

Throws:

IllegalActionException - Thrown If the bit width of the given fix token is not equal to given width.

_checkFixMaxValue

protected void _checkFixMaxValue(FixToken token,
                                 int max)
                          throws IllegalActionException

Verify that the bit width of the given fix-point token is equal to the minimum bit width that is required to represent the given value.

Parameters:

token - The given token.

max - The given value.

Throws:

IllegalActionException - Thrown if _checkFixToken(FixToken, in) throws it.

_setAndHideQuantizationParameters

protected void _setAndHideQuantizationParameters(java.lang.String precisionString,
                                                 java.lang.String overflowString,
                                                 java.lang.String roundingString)

Set quantization parameters of the output port with the given parameter expression strings. Hide the parameters in the configure dialog.

Parameters:

precisionString - The given expression for the precision parameter.

overflowString - The given expression for the overflow parameter.

roundingString - The given expression for the rounding parameter.

_showQuantizationParameters

protected void _showQuantizationParameters(boolean showPrecision,
                                           boolean showOverflow,
                                           boolean showRounding)

Set the visibility of the precision, overflow and rounding parameters.

Parameters:

showPrecision - The visibility of the precision parameter.

showOverflow - The visibility of the overflow parameter.

showRounding - The visibility of the precision parameter.

_setQuantizationParameters

protected void _setQuantizationParameters(java.lang.String precisionString,
                                          java.lang.String overflowString,
                                          java.lang.String roundingString)

Set quantization parameters for the output port.

Parameters:

precisionString - The given precision expression.

overflowString - The given overflow expression.

roundingString - The given rounding expression.