javax.media.jai.operator
Class DCTDescriptor

java.lang.Object
  javax.media.jai.OperationDescriptorImpl
      javax.media.jai.operator.DCTDescriptor

All Implemented Interfaces:

OperationDescriptor, RegistryElementDescriptor, Serializable

public class DCTDescriptor

extends OperationDescriptorImpl

An OperationDescriptor describing the "DCT" operation.

The "DCT" operation computes the even discrete cosine transform (DCT) of an image. Each band of the destination image is derived by performing a two-dimensional DCT on the corresponding band of the source image.

Resource List

Name	Value
GlobalName	DCT
LocalName	DCT
Vendor	com.sun.media.jai
Description	Computes the discrete cosine transform of an image.
DocURL	http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/DCTDescriptor.html
Version	1.0

No parameters are needed for the "DCT" operation.

See Also:

OperationDescriptor, Serialized Form

Field Summary

Fields inherited from class javax.media.jai.OperationDescriptorImpl

sourceNames, supportedModes

Fields inherited from interface javax.media.jai.OperationDescriptor

NO_PARAMETER_DEFAULT

Constructor Summary

DCTDescriptor()
Constructor.

Method Summary

static RenderedOp	create(RenderedImage source0, RenderingHints hints) Computes the discrete cosine transform of an image.
static RenderableOp	createRenderable(RenderableImage source0, RenderingHints hints) Computes the discrete cosine transform of an image.
boolean	isRenderableSupported() Returns true since renderable operation is supported.

Methods inherited from class javax.media.jai.OperationDescriptorImpl

arePropertiesSupported, getDefaultSourceClass, getDestClass, getDestClass, getInvalidRegion, getName, getNumParameters, getNumSources, getParamClasses, getParamDefaults, getParamDefaultValue, getParameterListDescriptor, getParamMaxValue, getParamMinValue, getParamNames, getPropertyGenerators, getPropertyGenerators, getRenderableDestClass, getRenderableSourceClasses, getResourceBundle, getResources, getSourceClasses, getSourceClasses, getSourceNames, getSupportedModes, isImmediate, isModeSupported, isRenderedSupported, makeDefaultSourceClassList, validateArguments, validateArguments, validateParameters, validateParameters, validateRenderableArguments, validateRenderableSources, validateSources, validateSources

Methods inherited from class java.lang.Object

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

Constructor Detail

DCTDescriptor

public DCTDescriptor()

Constructor.

Method Detail

isRenderableSupported

public boolean isRenderableSupported()

Returns true since renderable operation is supported.

Specified by:

isRenderableSupported in interface OperationDescriptor

Overrides:

isRenderableSupported in class OperationDescriptorImpl

See Also:

OperationDescriptorImpl.isModeSupported(java.lang.String)

create

public static RenderedOp create(RenderedImage source0,
                                RenderingHints hints)

Computes the discrete cosine transform of an image.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.create(String,ParameterBlock,RenderingHints).

Parameters:

source0 - RenderedImage source 0.

hints - The RenderingHints to use. May be null.

Returns:

The RenderedOp destination.

Throws:

IllegalArgumentException - if source0 is null.

See Also:

JAI, ParameterBlockJAI, RenderedOp

createRenderable

public static RenderableOp createRenderable(RenderableImage source0,
                                            RenderingHints hints)

Computes the discrete cosine transform of an image.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.createRenderable(String,ParameterBlock,RenderingHints).

Parameters:

source0 - RenderableImage source 0.

hints - The RenderingHints to use. May be null.

Returns:

The RenderableOp destination.

Throws:

IllegalArgumentException - if source0 is null.

See Also:

JAI, ParameterBlockJAI, RenderableOp