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PhaseHalfPi4Sse.h
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/*****************************************************************************
PhaseHalfPi4Sse.h
Author: Laurent de Soras, 2020
From the input signal, generates two signals with a pi/2 phase shift, using
SSE instruction set. Works on vectors of 4 float.
This object must be aligned on a 16-byte boundary!
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://www.wtfpl.net/ for more details.
*Tab=3***********************************************************************/
#pragma once
#if ! defined (hiir_PhaseHalfPi4Sse_HEADER_INCLUDED)
#define hiir_PhaseHalfPi4Sse_HEADER_INCLUDED
/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
#include "hiir/def.h"
#include "hiir/StageDataSse.h"
#include <xmmintrin.h>
#include <array>
namespace hiir
{
template <int NC>
class PhaseHalfPi4Sse
{
static_assert ((NC > 0), "Number of coefficient must be positive.");
/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
public:
typedef float DataType;
static const int _nbr_chn = 4;
enum { NBR_COEFS = NC };
PhaseHalfPi4Sse ();
PhaseHalfPi4Sse (const PhaseHalfPi4Sse <NC> &other) = default;
PhaseHalfPi4Sse (PhaseHalfPi4Sse <NC> &&other) = default;
~PhaseHalfPi4Sse () = default;
PhaseHalfPi4Sse <NC> &
operator = (const PhaseHalfPi4Sse <NC> &other) = default;
PhaseHalfPi4Sse <NC> &
operator = (PhaseHalfPi4Sse <NC> &&other) = default;
void set_coefs (const double coef_arr []);
hiir_FORCEINLINE void
process_sample (__m128 &out_0, __m128 &out_1, __m128 input);
void process_block (float out_0_ptr [], float out_1_ptr [], const float in_ptr [], long nbr_spl);
void clear_buffers ();
/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
protected:
/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
private:
static const int _nbr_phases = 2;
typedef std::array <StageDataSse, NBR_COEFS + 2> Filter; // Stages 0 and 1 contain only input memories
typedef std::array <Filter, _nbr_phases> FilterBiPhase;
FilterBiPhase _bifilter;
union
{
__m128 _prev4; // Just to ensure alignement
float _prev [4];
};
int _phase; // 0 or 1
/*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
private:
bool operator == (const PhaseHalfPi4Sse &other) const = delete;
bool operator != (const PhaseHalfPi4Sse &other) const = delete;
}; // class PhaseHalfPi4Sse
} // namespace hiir
#include "hiir/PhaseHalfPi4Sse.hpp"
#endif // hiir_PhaseHalfPi4Sse_HEADER_INCLUDED
/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/