/* 
 * File:   FirComplex.hpp
 * Author: jens
 *
 * Created on 20. Dezember 2014, 08:12
 */

#ifndef FIRCOMPLEX_HPP
#define	FIRCOMPLEX_HPP

#include "Vector.hpp"

namespace Radio
{

class FirComplex
{
public:
	FirComplex(uint32_t numTaps = 0)
	: m_numTaps(numTaps)
	, m_x(numTaps)
	{
	}
	virtual ~FirComplex()
	{
		
	}
	
	void setNumTaps(uint32_t numTaps)
	{
		m_numTaps = numTaps;
		m_x.resize(numTaps);
//		m_x.fill(ComplexScalar(0,0));
	}
	
	void feed(ComplexScalar const &x)
	{
//		m_x.reverse().head(m_numTaps-1) = m_x.reverse().tail(m_numTaps-1);
		
		m_x.reverse() << m_x.head(m_numTaps-1).reverse(), x;
//		m_x(0) = x;
	}

	ComplexScalar process(CVec const &coeff)
	{
		return m_x.transpose() * coeff.conjugate();
	}
	
protected:
	uint32_t m_numTaps;
	CVec m_x;
	
};

} // ::Radio

#endif	/* FIRCOMPLEX_HPP */