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Copy pathDownsampler2x2F64Neon.h
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Downsampler2x2F64Neon.h
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/*****************************************************************************
Downsampler2x2F64Neon.h
Author: Laurent de Soras, 2016
Ported to double by Dario Mambro, 2020
Downsamples vectors of 2 double by a factor 2 the input signal, using NEON
instruction set.
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://sam.zoy.org/wtfpl/COPYING for more details.
*Tab=3***********************************************************************/
#pragma once
#if ! defined (hiir_Downsampler2x2F64Neon_HEADER_INCLUDED)
#define hiir_Downsampler2x2F64Neon_HEADER_INCLUDED
#if defined (_MSC_VER)
#pragma warning (4 : 4250)
#endif
/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
#include "hiir/def.h"
#include "hiir/StageDataNeonV2F64.h"
#include <arm_neon.h>
#include <array>
namespace hiir
{
template <int NC>
class Downsampler2x2F64Neon
{
static_assert ((NC > 0), "Number of coefficient must be positive.");
/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
public:
typedef double DataType;
static const int _nbr_chn = 4;
enum { NBR_COEFS = NC };
Downsampler2x2F64Neon ();
Downsampler2x2F64Neon (const Downsampler2x2F64Neon <NC> &other) = default;
Downsampler2x2F64Neon (Downsampler2x2F64Neon <NC> &&other) = default;
~Downsampler2x2F64Neon () = default;
Downsampler2x2F64Neon <NC> &
operator = (const Downsampler2x2F64Neon <NC> &other) = default;
Downsampler2x2F64Neon <NC> &
operator = (Downsampler2x2F64Neon <NC> &&other) = default;
void set_coefs (const double coef_arr []);
hiir_FORCEINLINE float64x2_t
process_sample (const double in_ptr [4]);
hiir_FORCEINLINE float64x2_t
process_sample (float64x2_t in_0, float64x2_t in_1);
void process_block (double out_ptr [], const double in_ptr [], long nbr_spl);
hiir_FORCEINLINE void
process_sample_split (float64x2_t &low, float64x2_t &high, const double in_ptr [4]);
hiir_FORCEINLINE void
process_sample_split (float64x2_t &low, float64x2_t &high, float64x2_t in_0, float64x2_t in_1);
void process_block_split (double out_l_ptr [], double out_h_ptr [], const double in_ptr [], long nbr_spl);
void clear_buffers ();
/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
protected:
/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
private:
typedef std::array <StageDataNeonV2F64, NBR_COEFS + 2> Filter; // Stages 0 and 1 contain only input memories
Filter _filter; // Should be the first member (thus easier to align)
/*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
private:
bool operator == (const Downsampler2x2F64Neon <NC> &other) const = delete;
bool operator != (const Downsampler2x2F64Neon <NC> &other) const = delete;
}; // class Downsampler2x2F64Neon
} // namespace hiir
#include "hiir/Downsampler2x2F64Neon.hpp"
#endif // hiir_Downsampler2x2F64Neon_HEADER_INCLUDED
/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/