com.nativelibs4java.opencl.util.fft
Class FloatFFTPow2

java.lang.Object
  com.nativelibs4java.opencl.util.Transformer.AbstractTransformer<T,A>
      com.nativelibs4java.opencl.util.fft.FloatFFTPow2

All Implemented Interfaces:

Transformer<Float,float[]>

public class FloatFFTPow2
extends Transformer.AbstractTransformer<T,A>

OpenCL Fast Fourier Transform for array sizes that are powers of two (simple 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

FloatFFTPow2()

FloatFFTPow2(CLContext context)

Method Summary

protected CLEvent	cooleyTukeyFFT(CLQueue queue, CLBuffer<Float> Y, int N, CLBuffer<Float> twiddleFactors, int inverse, int[] dims, CLEvent... evts)
protected CLEvent	cooleyTukeyFFTCopy(CLQueue queue, CLBuffer<Float> inBuf, CLBuffer<Float> outBuf, int length, CLBuffer<Integer> offsetsBuf, boolean inverse, CLEvent... evts)
protected CLEvent	cooleyTukeyFFTTwiddleFactors(CLQueue queue, int N, CLBuffer<Float> 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

FloatFFTPow2

public FloatFFTPow2(CLContext context)
             throws IOException

Throws:

IOException

FloatFFTPow2

public FloatFFTPow2()
             throws IOException

Throws:

IOException

Method Detail

cooleyTukeyFFTTwiddleFactors

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

Throws:

CLException

cooleyTukeyFFTCopy

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

Throws:

CLException

cooleyTukeyFFT

protected CLEvent cooleyTukeyFFT(CLQueue queue,
                                 CLBuffer<Float> Y,
                                 int N,
                                 CLBuffer<Float> 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