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fft_engine.hh
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Mon, Sep 9, 17:41
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Wed, Sep 11, 17:41 (1 d, 22 h)
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rMSPPROTO µSpectre prototype implementation
fft_engine.hh
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/**
* file fft_engine.hh
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 11 May 2017
*
* @brief abstract base class defining interface for fft_systems
*
* @section LICENCE
*
* Copyright (C) 2017 Till Junge
*
* µSpectre is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3, or (at
* your option) any later version.
*
* µSpectre is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Emacs; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "common/common.hh"
#include <algorithm>
#include <utility>
#ifndef FFT_ENGINE_H
#define FFT_ENGINE_H
namespace
muSpectre
{
enum
class
FFT_PlanFlags
{
estimate
,
measure
,
patient
};
template
<
Dim_t
DimS
,
Dim_t
DimM
>
class
FFT_Engine
{
public
:
using
Ccoord
=
Ccoord_t
<
DimS
>
;
FFT_Engine
(
Ccoord
nb_pixels
)
:
nb_pixels
(
nb_pixels
),
tot_nb_pixels
(
std
::
accumulate
(
nb_pixels
.
begin
(),
nb_pixels
.
end
(),
1
,
std
::
multiplies
<
size_t
>
())){};
virtual
Real
*
convolve
(
const
Real
*
const
Ghat
,
const
Real
*
const
arr
)
=
0
;
//! out-of place convolution
virtual
void
convolve
(
const
Real
*
const
Ghat
,
const
Real
*
const
in
,
Real
*
out
)
=
0
;
size_t
get_tot_nb_pixels
()
const
{
return
this
->
tot_nb_pixels
;}
protected
:
virtual
void
init
(
FFT_PlanFlags
flags
)
=
0
;
const
Ccoord
nb_pixels
;
size_t
tot_nb_pixels
;
};
}
// muSpectre
#endif
/* FFT_ENGINE_H */
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