filter.h

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/***************************************************************************/
#ifndef AURESERVOIR_FILTER_H__
#define AURESERVOIR_FILTER_H__

#include "utilities.h"
#include <vector>

namespace aureservoir
{

template <typename T>
class BPFilter
{
 public:

  BPFilter() {}

  virtual ~BPFilter() {}

  const BPFilter& operator= (const BPFilter<T>& src)
  {
    ema1_ = src.ema1_; ema2_ = src.ema2_;
    f1_ = src.f1_; f2_ = src.f2_;
    scale_ = src.scale_;
    return *this;
  }

  void setBPCutoff(const typename DEVector<T>::Type &f1,
                   const typename DEVector<T>::Type &f2)
                   throw(AUExcept);

  void calc(typename DEVector<T>::Type &x);

 protected:

  typename DEVector<T>::Type ema1_;
  typename DEVector<T>::Type ema2_;
  typename DEVector<T>::Type f1_;
  typename DEVector<T>::Type f2_;
  typename DEVector<T>::Type scale_;
};

template <typename T>
class IIRFilter
{
 public:

  IIRFilter() {}

  virtual ~IIRFilter() {}

  const IIRFilter& operator= (const IIRFilter<T>& src)
  {
    B_ = src.B_;
    A_ = src.A_;
    S_ = src.S_;
    y_ = src.y_;
    return *this;
  }

  void setIIRCoeff(const typename DEMatrix<T>::Type &B,
                   const typename DEMatrix<T>::Type &A)
                   throw(AUExcept);

  void calc(typename DEVector<T>::Type &x);

 protected:

  typename DEMatrix<T>::Type B_;
  typename DEMatrix<T>::Type A_;
  typename DEMatrix<T>::Type S_;
  typename DEVector<T>::Type y_;

};

template <typename T>
class SerialIIRFilter
{
 public:

  SerialIIRFilter() {}

  virtual ~SerialIIRFilter() {}

  const SerialIIRFilter& operator= (const IIRFilter<T>& src)
  {
    filters_ = src.filters_;
    return *this;
  }

  void setIIRCoeff(const typename DEMatrix<T>::Type &B,
                   const typename DEMatrix<T>::Type &A,
                   int series=1) throw(AUExcept);

  void calc(typename DEVector<T>::Type &x);

 protected:

   std::vector< IIRFilter<T> > filters_;
};

} // end of namespace aureservoir

#include <aureservoir/filter.hpp>

#endif // AURESERVOIR_FILTER_H__

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