Convolve::Workspace Class Reference

Workspace for Fourier convolution. More...

Public Member Functions
	Workspace ()
	~Workspace ()
void	clear ()

Private Attributes
double *	dst_fft
	result of product of FFT(source) and FFT(kernel) More...
int	h_dst
int	h_fftw
int	h_kernel
int	h_offset
int	h_src
double *	in_kernel
	adjusted input 'kernel' array More...
double *	in_src
	adjusted input 'source' array More...
double *	out_kernel
	result of Fourier transformation of kernel More...
double *	out_src
	result of Fourier transformation of source More...
fftw_plan	p_back
fftw_plan	p_forw_kernel
fftw_plan	p_forw_src
int	w_dst
int	w_fftw
int	w_kernel
int	w_offset
int	w_src

Friends
class	Convolve

Detailed Description

Workspace for Fourier convolution.

Workspace contains input (source and kernel), intermediate and output arrays to run convolution via fft; 'source' it is our signal, 'kernel' it is our resolution function. Sizes of input arrays are adjusted; output arrays are alocated via fftw3 allocation for maximum performance.

Definition at line 89 of file Convolve.h.

Constructor & Destructor Documentation

Workspace()

Convolve::Workspace::Workspace

(

)

Definition at line 28 of file Convolve.cpp.

    : h_src(0)
    , w_src(0)
    , h_kernel(0)
    , w_kernel(0)
    , w_fftw(0)
    , h_fftw(0)
    , in_src(0)
    , out_src(0)
    , in_kernel(0)
    , out_kernel(0)
    , dst_fft(0)
    , h_dst(0)
    , w_dst(0)
    ,
    // dst(0),
    h_offset(0)
    , w_offset(0)
    , p_forw_src(nullptr)
    , p_forw_kernel(nullptr)
    , p_back(nullptr)
{
}

~Workspace()

Convolve::Workspace::~Workspace

(

)

Definition at line 52 of file Convolve.cpp.

{
    clear();
}

Member Function Documentation

clear()

void Convolve::Workspace::clear

(

)

Definition at line 57 of file Convolve.cpp.

{
    h_src = 0;
    w_src = 0;
    h_kernel = 0;
    w_kernel = 0;
    if (in_src)
        delete[] in_src;
    in_src = 0;
 
    if (out_src)
        fftw_free((fftw_complex*)out_src);
    out_src = 0;
 
    if (in_kernel)
        delete[] in_kernel;
    in_kernel = 0;
 
    if (out_kernel)
        fftw_free((fftw_complex*)out_kernel);
    out_kernel = 0;
 
    if (dst_fft)
        delete[] dst_fft;
    dst_fft = 0;
 
    // if(dst) delete[] dst;
    // dst=0;
 
    h_offset = 0;
    w_offset = 0;
 
    if (p_forw_src != nullptr)
        fftw_destroy_plan(p_forw_src);
    if (p_forw_kernel != nullptr)
        fftw_destroy_plan(p_forw_kernel);
    if (p_back != nullptr)
        fftw_destroy_plan(p_back);
 
    fftw_cleanup();
}

Referenced by Convolve::init().

Friends And Related Function Documentation

Convolve

friend class Convolve

friend

Definition at line 94 of file Convolve.h.

Member Data Documentation

dst_fft

double* Convolve::Workspace::dst_fft

private

result of product of FFT(source) and FFT(kernel)

Definition at line 110 of file Convolve.h.

Referenced by Convolve::fftconvolve(), Convolve::fftw_circular_convolution(), and Convolve::init().

h_dst

int Convolve::Workspace::h_dst

private

Definition at line 111 of file Convolve.h.

Referenced by Convolve::fftconvolve(), and Convolve::init().

h_fftw

int Convolve::Workspace::h_fftw

private

Definition at line 100 of file Convolve.h.

Referenced by Convolve::fftconvolve(), Convolve::fftw_circular_convolution(), and Convolve::init().

h_kernel

int Convolve::Workspace::h_kernel

private

Definition at line 98 of file Convolve.h.

Referenced by Convolve::fftconvolve(), Convolve::fftw_circular_convolution(), and Convolve::init().

h_offset

int Convolve::Workspace::h_offset

private

Definition at line 112 of file Convolve.h.

Referenced by Convolve::fftconvolve(), and Convolve::init().

h_src

int Convolve::Workspace::h_src

private

Definition at line 97 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

in_kernel

double* Convolve::Workspace::in_kernel

private

adjusted input 'kernel' array

Definition at line 106 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

in_src

double* Convolve::Workspace::in_src

private

adjusted input 'source' array

Definition at line 102 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

out_kernel

double* Convolve::Workspace::out_kernel

private

result of Fourier transformation of kernel

Definition at line 108 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

out_src

double* Convolve::Workspace::out_src

private

result of Fourier transformation of source

Definition at line 104 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

p_back

fftw_plan Convolve::Workspace::p_back

private

Definition at line 115 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

p_forw_kernel

fftw_plan Convolve::Workspace::p_forw_kernel

private

Definition at line 114 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

p_forw_src

fftw_plan Convolve::Workspace::p_forw_src

private

Definition at line 113 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

w_dst

int Convolve::Workspace::w_dst

private

Definition at line 111 of file Convolve.h.

Referenced by Convolve::fftconvolve(), and Convolve::init().

w_fftw

int Convolve::Workspace::w_fftw

private

Definition at line 100 of file Convolve.h.

Referenced by Convolve::fftconvolve(), Convolve::fftw_circular_convolution(), and Convolve::init().

w_kernel

int Convolve::Workspace::w_kernel

private

Definition at line 98 of file Convolve.h.

Referenced by Convolve::fftconvolve(), Convolve::fftw_circular_convolution(), and Convolve::init().

w_offset

int Convolve::Workspace::w_offset

private

Definition at line 112 of file Convolve.h.

Referenced by Convolve::fftconvolve(), and Convolve::init().

w_src

int Convolve::Workspace::w_src

private

Definition at line 97 of file Convolve.h.

Referenced by Convolve::fftw_circular_convolution(), and Convolve::init().

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The documentation for this class was generated from the following files:

• /home/www/ba/Device/Resolution/Convolve.h
• /home/www/ba/Device/Resolution/Convolve.cpp