org.shared.fft

Class FftCache<C extends AbstractArray<C,C,R,?>,R extends AbstractArray<R,C,R,?>>

java.lang.Object

org.shared.fft.FftCache<C,R>

Type Parameters:

C - the complex array type.

R - the real array type.

Direct Known Subclasses:

ConvolutionCache

public abstract class FftCache<C extends AbstractArray<C,C,R,?>,R extends AbstractArray<R,C,R,?>>
extends Object

A class for thread-safe caching of padded and FFT'd convolution kernels.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	FftCache.CacheKey A lookup key class for cached kernels.

Constructor Summary

Constructors

Constructor and Description
FftCache() Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract <A extends AbstractArray<?,C,?,?>> C	createCacheable(A array, int[] dims) Creates an instance of the complex array type.
<A extends AbstractArray<?,C,?,?>> C	get(A tag, int... dims) Attempts to retrieve a cached, padded, and FFT'd companion of the given AbstractArray.
String	toString() Delegates to AbstractMap.toString().

Methods inherited from class java.lang.Object

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

Constructor Detail

FftCache

public FftCache()

Default constructor.

Method Detail

toString

public String toString()

Delegates to AbstractMap.toString().

Overrides:

toString in class Object

get

public <A extends AbstractArray<?,C,?,?>> C get(A tag,
                                       int... dims)

Attempts to retrieve a cached, padded, and FFT'd companion of the given AbstractArray.

Type Parameters:

A - the query array type.

Parameters:

tag - the query key.

dims - the size of the cached result.

Returns:

the cached result, or a newly created and inserted one.

createCacheable

protected abstract <A extends AbstractArray<?,C,?,?>> C createCacheable(A array,
                                                   int[] dims)

Creates an instance of the complex array type.

Type Parameters:

A - the query array type.

Parameters:

array - the query key.

dims - the size of the cached result.

Returns:

an instance of the complex array type.