javax.media.jai.operator
Class AndConstDescriptor

java.lang.Object
  |
  +--javax.media.jai.OperationDescriptorImpl
        |
        +--javax.media.jai.operator.AndConstDescriptor

All Implemented Interfaces:

OperationDescriptor, RegistryElementDescriptor, Serializable

public class AndConstDescriptor

extends OperationDescriptorImpl

An OperationDescriptor describing the "AndConst" operation.

This operation takes one rendered or renderable image and an array of integer constants, and performs a bit-wise logical "and" between every pixel in the same band of the source and the constant from the corresponding array entry. If the number of constants supplied is less than the number of bands of the destination, then the constant from entry 0 is applied to all the bands. Otherwise, a constant from a different entry is applied to each band.

The source image must have an integral data type. By default, the destination image bound, data type, and number of bands are the same as the source image.

The following matrix defines the logical "and" operation.

Logical "and"

src	const	Result
0	0	0
0	1	0
1	0	0
1	1	1

The destination pixel values are defined by the pseudocode:

 if (constants.length < dstNumBands) {
     dst[x][y][b] = srcs[x][y][b] & constants[0];
 } else {
     dst[x][y][b] = srcs[x][y][b] & constants[b];
 }
 

Resource List

Name	Value
GlobalName	AndConst
LocalName	AndConst
Vendor	com.sun.media.jai
Description	Logically "ands" a rendered image with constants.
DocURL	http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/AndConstDescriptor.html
Version	1.0
arg0Desc	The constants to logically "and" with.

Parameter List

Name	Class Type	Default Value
constants	int[]	NO_PARAMETER_DEFAULT

See Also:

OperationDescriptor, Serialized Form

Fields inherited from class javax.media.jai.OperationDescriptorImpl

resources, sourceNames, supportedModes

Constructor Summary

AndConstDescriptor()
Constructor.

Method Summary

boolean

validateArguments(String modeName, ParameterBlock args, StringBuffer message) Validates the input source and parameter.

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, isRenderableSupported, isRenderedSupported, makeDefaultSourceClassList, 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

AndConstDescriptor

public AndConstDescriptor()

Constructor.

Method Detail

validateArguments

public boolean validateArguments(String modeName,
                                 ParameterBlock args,
                                 StringBuffer message)

Validates the input source and parameter.

In addition to the standard checks performed by the superclass method, this method checks that the source image has an integral data type and that "constants" has length at least 1.

Overrides:

validateArguments in class OperationDescriptorImpl

Tags copied from class: OperationDescriptorImpl

Parameters:

modeName - the operation mode name

args - Input arguments, including source(s) and/or parameter(s).

msg - A string that may contain error messages.

Throws:

IllegalArgumentException - if modeName is null

See Also:

OperationDescriptorImpl.validateSources(java.lang.String, java.awt.image.renderable.ParameterBlock, java.lang.StringBuffer), OperationDescriptorImpl.validateParameters(java.lang.String, java.awt.image.renderable.ParameterBlock, java.lang.StringBuffer)