com.nativelibs4java.opencl.util.fft
Class DoubleFFTPow2

java.lang.Object
  com.nativelibs4java.opencl.util.Transformer.AbstractTransformer<T,A>
      com.nativelibs4java.opencl.util.fft.DoubleFFTPow2

All Implemented Interfaces:

Transformer<Double,double[]>

public class DoubleFFTPow2
extends Transformer.AbstractTransformer<T,A>

OpenCL Fast Fourier Transform for array sizes that are powers of two (double precision floating point numbers)

Nested Class Summary

Nested classes/interfaces inherited from interface com.nativelibs4java.opencl.util.Transformer

Transformer.AbstractTransformer<T,A>

Field Summary

Fields inherited from class com.nativelibs4java.opencl.util.Transformer.AbstractTransformer

context, primitiveClass

Constructor Summary

DoubleFFTPow2()

DoubleFFTPow2(CLContext context)

Method Summary

protected CLEvent	cooleyTukeyFFT(CLQueue queue, CLBuffer<Double> Y, int N, CLBuffer<Double> twiddleFactors, int inverse, int[] dims, CLEvent... evts)
protected CLEvent	cooleyTukeyFFTCopy(CLQueue queue, CLBuffer<Double> inBuf, CLBuffer<Double> outBuf, int length, CLBuffer<Integer> offsetsBuf, boolean inverse, CLEvent... evts)
protected CLEvent	cooleyTukeyFFTTwiddleFactors(CLQueue queue, int N, CLBuffer<Double> buf, CLEvent... evts)
protected CLBuffer<Integer>	getOffsetsBuf(int length)
protected CLBuffer<T>	getTwiddleFactorsBuf(CLQueue queue, int N)
CLEvent	transform(CLQueue queue, CLBuffer<T> inBuf, CLBuffer<T> outBuf, boolean inverse, CLEvent... eventsToWaitFor)

Methods inherited from class com.nativelibs4java.opencl.util.Transformer.AbstractTransformer

computeOutputSize, getContext, transform, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleFFTPow2

public DoubleFFTPow2(CLContext context)
              throws IOException,
                     CLException

Throws:

IOException

CLException

DoubleFFTPow2

public DoubleFFTPow2()
              throws IOException

Throws:

IOException

Method Detail

cooleyTukeyFFTTwiddleFactors

protected CLEvent cooleyTukeyFFTTwiddleFactors(CLQueue queue,
                                               int N,
                                               CLBuffer<Double> buf,
                                               CLEvent... evts)
                                        throws CLException

Throws:

CLException

cooleyTukeyFFTCopy

protected CLEvent cooleyTukeyFFTCopy(CLQueue queue,
                                     CLBuffer<Double> inBuf,
                                     CLBuffer<Double> outBuf,
                                     int length,
                                     CLBuffer<Integer> offsetsBuf,
                                     boolean inverse,
                                     CLEvent... evts)
                              throws CLException

Throws:

CLException

cooleyTukeyFFT

protected CLEvent cooleyTukeyFFT(CLQueue queue,
                                 CLBuffer<Double> Y,
                                 int N,
                                 CLBuffer<Double> twiddleFactors,
                                 int inverse,
                                 int[] dims,
                                 CLEvent... evts)
                          throws CLException

Throws:

CLException

getOffsetsBuf

protected CLBuffer<Integer> getOffsetsBuf(int length)

getTwiddleFactorsBuf

protected CLBuffer<T> getTwiddleFactorsBuf(CLQueue queue,
                                           int N)
                                    throws CLException

Throws:

CLException

transform

public CLEvent transform(CLQueue queue,
                         CLBuffer<T> inBuf,
                         CLBuffer<T> outBuf,
                         boolean inverse,
                         CLEvent... eventsToWaitFor)
                  throws CLException

Throws:

CLException