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sdrangel/wdsp/eq.hpp
2024-08-03 11:05:12 +02:00

95 lines
2.6 KiB
C++

/* eq.h
This file is part of a program that implements a Software-Defined Radio.
Copyright (C) 2013, 2016 Warren Pratt, NR0V
Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
This program 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 2
of the License, or (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
The author can be reached by email at
warren@wpratt.com
*/
/********************************************************************************************************
* *
* Overlap-Save Equalizer *
* *
********************************************************************************************************/
#ifndef wdsp_eq_h
#define wdsp_eq_h
#include <vector>
#include "fftw3.h"
#include "export.h"
namespace WDSP {
class WDSP_API EQ
{
public:
int run;
int size;
float* in;
float* out;
int nfreqs;
std::vector<float> F;
std::vector<float> G;
std::vector<float> infilt;
std::vector<float> product;
std::vector<float> mults;
float scale;
int ctfmode;
int wintype;
float samplerate;
fftwf_plan CFor;
fftwf_plan CRev;
EQ(
int run,
int size,
float *in,
float *out,
int nfreqs,
const float* F,
const float* G,
int ctfmode,
int wintype,
int samplerate
);
EQ(const EQ&) = delete;
EQ& operator=(EQ& other) = delete;
~EQ() = default;
void flush();
void execute();
void setBuffers(float* in, float* out);
void setSamplerate(int rate);
void setSize(int size);
private:
static void eq_mults (std::vector<float>& mults, int size, int nfreqs, float* F, float* G, float samplerate, float scale, int ctfmode, int wintype);
void calc();
void decalc();
};
} // namespace WDSP
#endif