mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-13 20:01:46 -05:00
134 lines
4.3 KiB
C++
134 lines
4.3 KiB
C++
/* nobII.h
|
|
|
|
This file is part of a program that implements a Software-Defined Radio.
|
|
|
|
Copyright (C) 2014 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
|
|
|
|
*/
|
|
|
|
#ifndef wdsp_nob_h
|
|
#define wdsp_nob_h
|
|
|
|
#include <vector>
|
|
|
|
#include "export.h"
|
|
|
|
namespace WDSP {
|
|
|
|
class WDSP_API NOB
|
|
{
|
|
public:
|
|
int run;
|
|
int buffsize; // size of input/output buffer
|
|
float* in; // input buffer
|
|
float* out; // output buffer
|
|
int dline_size; // length of delay line which is 'double dline[length][2]'
|
|
std::vector<double> dline; // delay line
|
|
std::vector<int> imp;
|
|
double samplerate; // samplerate, used to convert times into sample counts
|
|
int mode;
|
|
double advslewtime; // transition time, signal<->zero
|
|
double advtime; // deadtime (zero output) in advance of detected noise
|
|
double hangslewtime;
|
|
double hangtime; // time to stay at zero after noise is no longer detected
|
|
double max_imp_seq_time;
|
|
int filterlen;
|
|
std::vector<double> fcoefs;
|
|
std::vector<double> bfbuff;
|
|
int bfb_in_idx;
|
|
std::vector<double> ffbuff;
|
|
int ffb_in_idx;
|
|
double backtau; // time constant used in averaging the magnitude of the input signal
|
|
double threshold; // triggers if (noise > threshold * average_signal_magnitude)
|
|
std::vector<double> awave; // array holding transition waveform
|
|
std::vector<double> hwave;
|
|
int state; // state of the state machine
|
|
double avg; // average value of the signal magnitude
|
|
int time; // count when decreasing the signal magnitude
|
|
int adv_slew_count;
|
|
int adv_count; // number of samples to equal 'tau' time
|
|
int hang_count; // number of samples to equal 'hangtime' time
|
|
int hang_slew_count; // number of samples to equal 'advtime' time
|
|
int max_imp_seq;
|
|
int blank_count;
|
|
int in_idx; // ring buffer position into which new samples are inserted
|
|
int scan_idx;
|
|
int out_idx; // ring buffer position from which delayed samples are pulled
|
|
double backmult; // multiplier for waveform averaging
|
|
double ombackmult; // multiplier for waveform averaging
|
|
double I1;
|
|
double Q1;
|
|
double I2;
|
|
double Q2;
|
|
double I;
|
|
double Q;
|
|
double Ilast;
|
|
double Qlast;
|
|
double deltaI;
|
|
double deltaQ;
|
|
double Inext;
|
|
double Qnext;
|
|
int overflow;
|
|
|
|
NOB(
|
|
int run,
|
|
int buffsize,
|
|
float* in,
|
|
float* out,
|
|
double samplerate,
|
|
int mode,
|
|
double advslewtime,
|
|
double advtime,
|
|
double hangslewtime,
|
|
double hangtime,
|
|
double max_imp_seq_time,
|
|
double backtau,
|
|
double threshold
|
|
);
|
|
NOB(const NOB&) = delete;
|
|
NOB& operator=(const NOB& other) = delete;
|
|
~NOB() = default;
|
|
//////////// legacy interface - remove
|
|
void flush();
|
|
void execute();
|
|
void setBuffers(float* in, float* out);
|
|
void setSize(int size);
|
|
// Common interface
|
|
void setRun (int run);
|
|
void setMode (int mode);
|
|
void setBuffsize (int size);
|
|
void setSamplerate (int size);
|
|
void setTau (double tau);
|
|
void setHangtime (double time);
|
|
void setAdvtime (double time);
|
|
void setBacktau (double tau);
|
|
void setThreshold (double thresh);
|
|
|
|
private:
|
|
void init();
|
|
};
|
|
|
|
|
|
} // namespace
|
|
|
|
#endif
|