/*****************************************************************************

        Upsampler2xFpu.h
        Author: Laurent de Soras, 2005

Upsamples by a factor 2 the input signal, using FPU.

Template parameters:
	- NC: number of coefficients, > 0

--- Legal stuff ---

This program is free software. It comes without any warranty, to
the extent permitted by applicable law. You can redistribute it
and/or modify it under the terms of the Do What The Fuck You Want
To Public License, Version 2, as published by Sam Hocevar. See
http://sam.zoy.org/wtfpl/COPYING for more details.

*Tab=3***********************************************************************/



#if ! defined (hiir_Upsampler2xFpu_HEADER_INCLUDED)
#define hiir_Upsampler2xFpu_HEADER_INCLUDED

#if defined (_MSC_VER)
	#pragma once
	#pragma warning (4 : 4250) // "Inherits via dominance."
#endif



/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

#include <array>



namespace hiir
{



template <int NC>
class Upsampler2xFpu
{

	static_assert ((NC > 0), "Number of coefficient must be positive.");

/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

public:

	enum {         NBR_COEFS	= NC	};

	               Upsampler2xFpu ();

	void           set_coefs (const double coef_arr [NBR_COEFS]);
	inline void    process_sample (float &out_0, float &out_1, float input);
	void           process_block (float out_ptr [], const float in_ptr [], long nbr_spl);
	void           clear_buffers ();



/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

protected:



/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

private:

	typedef std::array <float, NBR_COEFS> HyperGluar;

	HyperGluar     _coef;
	HyperGluar     _x;
	HyperGluar     _y;



/*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

private:

	bool           operator == (const Upsampler2xFpu <NC> &other);
	bool           operator != (const Upsampler2xFpu <NC> &other);

}; // class Upsampler2xFpu



}  // namespace hiir



#include "hiir/Upsampler2xFpu.hpp"



#endif   // hiir_Upsampler2xFpu_HEADER_INCLUDED



/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/