delaysum.h

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/***************************************************************************/
#ifndef AURESERVOIR_DELAYSUM_H__
#define AURESERVOIR_DELAYSUM_H__

#include "utilities.h"
#include <complex>
#include <math.h>
#include <fftw3.h>

namespace aureservoir
{



void rfft(const DEVector<double>::Type &x,
          CDEVector<double>::Type &X, int fftsize);

void rfft(const DEVector<float>::Type &x,
          CDEVector<float>::Type &X, int fftsize);

void irfft(CDEVector<double>::Type &X, DEVector<double>::Type &x);

void irfft(CDEVector<float>::Type &X, DEVector<float>::Type &x);


template <typename T>
class CalcDelay
{
 public:
  static int gcc(const typename CDEVector<T>::Type &X,
                 const typename CDEVector<T>::Type &Y,
                 int maxdelay=1000, int filter=0);
};

template <typename T>
class DelayLine
{
 public:

  DelayLine()
  { delay_=0; readpt_=1; }

  virtual ~DelayLine() {}

  void initBuffer(const typename DEVector<T>::Type &initbuf);

  T tic(T sample);

  const DelayLine& operator= (const DelayLine<T>& src)
  {
    readpt_ = src.readpt_;
    delay_ = src.delay_;
    buffer_ = src.buffer_;
    return *this;
  }

  typename DEVector<T>::Type buffer_;

  long readpt_;

  long delay_;
};

} // end of namespace aureservoir

#include <aureservoir/delaysum.hpp>

#endif // AURESERVOIR_DELAYSUM_H__

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