QRealComplexFFTGSL.hh

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#ifndef __QREALCOMPLFFTGSL_
#define __QREALCOMPLFFTGSL_
 
#include "QFFT.hh"
#include <gsl/gsl_fft_real.h>
#include <gsl/gsl_fft_halfcomplex.h>
 
Q_BEGIN_NAMESPACE
 
class QVectorC;
 
class QRealComplexFFTGSL: public QFFT {
 
public: 
  QRealComplexFFTGSL(const int size);
  QRealComplexFFTGSL();
  virtual ~QRealComplexFFTGSL();
  virtual int TransformToFreq(const QVector& data, QVectorC& FFT,
                              bool compress=false); 
  virtual int TransformFromFreq(const QVectorC& FT, QVector& spectrum,
                                bool compress=false); 
 
 
  virtual void SetWindowType(WindowType wt, int coherent = 0);
 
protected:
 
  virtual int Transform(const QVector& data, QVector& result); 
 
private:
  // RF should not be called from outside, but done
  // automatically at Transform time
  virtual bool Resize(size_t s);
 
  gsl_fft_real_wavetable* fWaveTable;
  gsl_fft_halfcomplex_wavetable* fHCWaveTable;
  gsl_fft_real_workspace* fWork;
 
  ClassDef(QRealComplexFFTGSL,0);
 
 
};
 
Q_END_NAMESPACE
 
#endif