kopia lustrzana https://github.com/f4exb/sdrangel
156 wiersze
4.8 KiB
C++
156 wiersze
4.8 KiB
C++
/* nbp.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2015, 2016 Warren Pratt, NR0V
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Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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The author can be reached by email at
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warren@wpratt.com
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*/
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#ifndef wdsp_nbp_h
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#define wdsp_nbp_h
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#include "export.h"
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namespace WDSP {
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class FIRCORE;
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class RXA;
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class WDSP_API NOTCHDB
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{
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public:
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int master_run;
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double tunefreq;
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double shift;
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int nn;
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int* active;
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double* fcenter;
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double* fwidth;
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double* nlow;
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double* nhigh;
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int maxnotches;
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static NOTCHDB* create_notchdb (int master_run, int maxnotches);
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static void destroy_notchdb (NOTCHDB *b);
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};
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class NBP
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{
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public:
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int run; // run the filter
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int fnfrun; // use the notches
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int position; // position in processing pipeline
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int size; // buffer size
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int nc; // number of filter coefficients
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int mp; // minimum phase flag
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float* in; // input buffer
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float* out; // output buffer
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double flow; // low bandpass cutoff freq
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double fhigh; // high bandpass cutoff freq
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float* impulse; // filter impulse response
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double rate; // sample rate
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int wintype; // filter window type
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double gain; // filter gain
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int autoincr; // auto-increment notch width
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int maxpb; // maximum number of passbands
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NOTCHDB* ptraddr; // ptr to addr of notch-database data structure
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double* bplow; // array of passband lows
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double* bphigh; // array of passband highs
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int numpb; // number of passbands
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FIRCORE *p;
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int havnotch;
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int hadnotch;
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static NBP* create_nbp(
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int run,
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int fnfrun,
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int position,
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int size,
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int nc,
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int mp,
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float* in,
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float* out,
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double flow,
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double fhigh,
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int rate,
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int wintype,
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double gain,
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int autoincr,
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int maxpb,
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NOTCHDB* ptraddr
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);
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static void destroy_nbp (NBP *a);
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static void flush_nbp (NBP *a);
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static void xnbp (NBP *a, int pos);
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static void setBuffers_nbp (NBP *a, float* in, float* out);
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static void setSamplerate_nbp (NBP *a, int rate);
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static void setSize_nbp (NBP *a, int size);
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static void calc_nbp_impulse (NBP *a);
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static void setNc_nbp (NBP *a);
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static void setMp_nbp (NBP *a);
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// RXA Properties
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static void UpdateNBPFiltersLightWeight (RXA& rxa);
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static void UpdateNBPFilters(RXA& rxa);
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static int NBPAddNotch (RXA& rxa, int notch, double fcenter, double fwidth, int active);
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static int NBPGetNotch (RXA& rxa, int notch, double* fcenter, double* fwidth, int* active);
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static int NBPDeleteNotch (RXA& rxa, int notch);
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static int NBPEditNotch (RXA& rxa, int notch, double fcenter, double fwidth, int active);
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static void NBPGetNumNotches (RXA& rxa, int* nnotches);
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static void NBPSetTuneFrequency (RXA& rxa, double tunefreq);
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static void NBPSetShiftFrequency (RXA& rxa, double shift);
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static void NBPSetNotchesRun (RXA& rxa, int run);
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static void NBPSetRun (RXA& rxa, int run);
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static void NBPSetFreqs (RXA& rxa, double flow, double fhigh);
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static void NBPSetWindow (RXA& rxa, int wintype);
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static void NBPSetNC (RXA& rxa, int nc);
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static void NBPSetMP (RXA& rxa, int mp);
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static void NBPGetMinNotchWidth (RXA& rxa, double* minwidth);
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static void NBPSetAutoIncrease (RXA& rxa, int autoincr);
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private:
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static float* fir_mbandpass (int N, int nbp, double* flow, double* fhigh, double rate, double scale, int wintype);
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static double min_notch_width (NBP *a);
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static int make_nbp (
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int nn,
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int* active,
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double* center,
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double* width,
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double* nlow,
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double* nhigh,
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double minwidth,
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int autoincr,
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double flow,
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double fhigh,
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double* bplow,
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double* bphigh,
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int* havnotch
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);
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static void calc_nbp_lightweight (NBP *a);
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};
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} // namespace WDSP
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#endif
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