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sdrangel/wdsp/dbqlp.hpp
2024-08-01 00:31:28 +02:00

86 lines
2.3 KiB
C++

/* dbqlp.h
This file is part of a program that implements a Software-Defined Radio.
Copyright (C) 2014, 2022, 2023 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
*/
/********************************************************************************************************
* *
* Double Bi-Quad Low-Pass *
* *
********************************************************************************************************/
#ifndef wdsp_dbqlp_h
#define wdsp_dbqlp_h
#include <vector>
#include "export.h"
namespace WDSP {
class WDSP_API DBQLP
{
public:
int run;
int size;
float* in;
float* out;
double rate;
double fc;
double Q;
double gain;
int nstages;
double a0, a1, a2, b1, b2;
std::vector<double> x0, x1, x2, y0, y1, y2;
DBQLP(
int run,
int size,
float* in,
float* out,
double rate,
double fc,
double Q,
double gain,
int nstages
);
DBQLP(const DBQLP&) = delete;
DBQLP& operator=(DBQLP& other) = delete;
~DBQLP() = default;
void flush();
void execute();
void setBuffers(float* in, float* out);
void setSamplerate(int rate);
void setSize(int size);
private:
void calc();
};
} // namespace WDSP
#endif