kopia lustrzana https://github.com/f4exb/sdrangel
286 wiersze
9.2 KiB
C++
286 wiersze
9.2 KiB
C++
/* bandpass.c
|
|
|
|
This file is part of a program that implements a Software-Defined Radio.
|
|
|
|
Copyright (C) 2013, 2016, 2017 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
|
|
|
|
*/
|
|
|
|
#include "comm.hpp"
|
|
#include "bandpass.hpp"
|
|
#include "fir.hpp"
|
|
#include "firmin.hpp"
|
|
#include "RXA.hpp"
|
|
#include "TXA.hpp"
|
|
|
|
namespace WDSP {
|
|
|
|
/********************************************************************************************************
|
|
* *
|
|
* Partitioned Overlap-Save Bandpass *
|
|
* *
|
|
********************************************************************************************************/
|
|
|
|
BANDPASS* BANDPASS::create_bandpass (int run, int position, int size, int nc, int mp, float* in, float* out,
|
|
float f_low, float f_high, int samplerate, int wintype, float gain)
|
|
{
|
|
// NOTE: 'nc' must be >= 'size'
|
|
BANDPASS *a = new BANDPASS;
|
|
float* impulse;
|
|
a->run = run;
|
|
a->position = position;
|
|
a->size = size;
|
|
a->nc = nc;
|
|
a->mp = mp;
|
|
a->in = in;
|
|
a->out = out;
|
|
a->f_low = f_low;
|
|
a->f_high = f_high;
|
|
a->samplerate = samplerate;
|
|
a->wintype = wintype;
|
|
a->gain = gain;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
a->p = FIRCORE::create_fircore (a->size, a->in, a->out, a->nc, a->mp, impulse);
|
|
delete[] impulse;
|
|
return a;
|
|
}
|
|
|
|
void BANDPASS::destroy_bandpass (BANDPASS *a)
|
|
{
|
|
FIRCORE::destroy_fircore (a->p);
|
|
delete a;
|
|
}
|
|
|
|
void BANDPASS::flush_bandpass (BANDPASS *a)
|
|
{
|
|
FIRCORE::flush_fircore (a->p);
|
|
}
|
|
|
|
void BANDPASS::xbandpass (BANDPASS *a, int pos)
|
|
{
|
|
if (a->run && a->position == pos)
|
|
FIRCORE::xfircore (a->p);
|
|
else if (a->out != a->in)
|
|
memcpy (a->out, a->in, a->size * sizeof (wcomplex));
|
|
}
|
|
|
|
void BANDPASS::setBuffers_bandpass (BANDPASS *a, float* in, float* out)
|
|
{
|
|
a->in = in;
|
|
a->out = out;
|
|
FIRCORE::setBuffers_fircore (a->p, a->in, a->out);
|
|
}
|
|
|
|
void BANDPASS::setSamplerate_bandpass (BANDPASS *a, int rate)
|
|
{
|
|
float* impulse;
|
|
a->samplerate = rate;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setImpulse_fircore (a->p, impulse, 1);
|
|
delete[] impulse;
|
|
}
|
|
|
|
void BANDPASS::setSize_bandpass (BANDPASS *a, int size)
|
|
{
|
|
// NOTE: 'size' must be <= 'nc'
|
|
float* impulse;
|
|
a->size = size;
|
|
FIRCORE::setSize_fircore (a->p, a->size);
|
|
// recalc impulse because scale factor is a function of size
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setImpulse_fircore (a->p, impulse, 1);
|
|
delete[] (impulse);
|
|
}
|
|
|
|
void BANDPASS::setGain_bandpass (BANDPASS *a, float gain, int update)
|
|
{
|
|
float* impulse;
|
|
a->gain = gain;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setImpulse_fircore (a->p, impulse, update);
|
|
delete[] (impulse);
|
|
}
|
|
|
|
void BANDPASS::CalcBandpassFilter (BANDPASS *a, float f_low, float f_high, float gain)
|
|
{
|
|
float* impulse;
|
|
if ((a->f_low != f_low) || (a->f_high != f_high) || (a->gain != gain))
|
|
{
|
|
a->f_low = f_low;
|
|
a->f_high = f_high;
|
|
a->gain = gain;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setImpulse_fircore (a->p, impulse, 1);
|
|
delete[] (impulse);
|
|
}
|
|
}
|
|
|
|
/********************************************************************************************************
|
|
* *
|
|
* RXA Properties *
|
|
* *
|
|
********************************************************************************************************/
|
|
|
|
void BANDPASS::SetBandpassFreqs (RXA& rxa, float f_low, float f_high)
|
|
{
|
|
float* impulse;
|
|
BANDPASS *a = rxa.bp1.p;
|
|
if ((f_low != a->f_low) || (f_high != a->f_high))
|
|
{
|
|
impulse = FIR::fir_bandpass (a->nc, f_low, f_high, a->samplerate,
|
|
a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setImpulse_fircore (a->p, impulse, 0);
|
|
delete[] (impulse);
|
|
rxa.csDSP.lock();
|
|
a->f_low = f_low;
|
|
a->f_high = f_high;
|
|
FIRCORE::setUpdate_fircore (a->p);
|
|
rxa.csDSP.unlock();
|
|
}
|
|
}
|
|
|
|
void BANDPASS::SetBandpassNC (RXA& rxa, int nc)
|
|
{
|
|
// NOTE: 'nc' must be >= 'size'
|
|
float* impulse;
|
|
BANDPASS *a;
|
|
rxa.csDSP.lock();
|
|
a = rxa.bp1.p;
|
|
if (nc != a->nc)
|
|
{
|
|
a->nc = nc;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setNc_fircore (a->p, a->nc, impulse);
|
|
delete[] (impulse);
|
|
}
|
|
rxa.csDSP.unlock();
|
|
}
|
|
|
|
void BANDPASS::SetBandpassMP (RXA& rxa, int mp)
|
|
{
|
|
BANDPASS *a;
|
|
a = rxa.bp1.p;
|
|
if (mp != a->mp)
|
|
{
|
|
a->mp = mp;
|
|
FIRCORE::setMp_fircore (a->p, a->mp);
|
|
}
|
|
}
|
|
|
|
/********************************************************************************************************
|
|
* *
|
|
* TXA Properties *
|
|
* *
|
|
********************************************************************************************************/
|
|
|
|
//PORT
|
|
//void SetTXABandpassFreqs (int channel, float f_low, float f_high)
|
|
//{
|
|
// float* impulse;
|
|
// BANDPASS a;
|
|
// a = txa.bp0.p;
|
|
// if ((f_low != a->f_low) || (f_high != a->f_high))
|
|
// {
|
|
// a->f_low = f_low;
|
|
// a->f_high = f_high;
|
|
// impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
// setImpulse_fircore (a->p, impulse, 1);
|
|
// delete[] (impulse);
|
|
// }
|
|
// a = txa.bp1.p;
|
|
// if ((f_low != a->f_low) || (f_high != a->f_high))
|
|
// {
|
|
// a->f_low = f_low;
|
|
// a->f_high = f_high;
|
|
// impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
// setImpulse_fircore (a->p, impulse, 1);
|
|
// delete[] (impulse);
|
|
// }
|
|
// a = txa.bp2.p;
|
|
// if ((f_low != a->f_low) || (f_high != a->f_high))
|
|
// {
|
|
// a->f_low = f_low;
|
|
// a->f_high = f_high;
|
|
// impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
// setImpulse_fircore (a->p, impulse, 1);
|
|
// delete[] (impulse);
|
|
// }
|
|
//}
|
|
|
|
void BANDPASS::SetBandpassNC (TXA& txa, int nc)
|
|
{
|
|
// NOTE: 'nc' must be >= 'size'
|
|
float* impulse;
|
|
BANDPASS *a;
|
|
txa.csDSP.lock();
|
|
a = txa.bp0.p;
|
|
if (a->nc != nc)
|
|
{
|
|
a->nc = nc;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setNc_fircore (a->p, a->nc, impulse);
|
|
delete[] (impulse);
|
|
}
|
|
a = txa.bp1.p;
|
|
if (a->nc != nc)
|
|
{
|
|
a->nc = nc;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setNc_fircore (a->p, a->nc, impulse);
|
|
delete[] (impulse);
|
|
}
|
|
a = txa.bp2.p;
|
|
if (a->nc != nc)
|
|
{
|
|
a->nc = nc;
|
|
impulse = FIR::fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (float)(2 * a->size));
|
|
FIRCORE::setNc_fircore (a->p, a->nc, impulse);
|
|
delete[] (impulse);
|
|
}
|
|
txa.csDSP.unlock();
|
|
}
|
|
|
|
void BANDPASS::SetBandpassMP (TXA& txa, int mp)
|
|
{
|
|
BANDPASS *a;
|
|
a = txa.bp0.p;
|
|
if (mp != a->mp)
|
|
{
|
|
a->mp = mp;
|
|
FIRCORE::setMp_fircore (a->p, a->mp);
|
|
}
|
|
a = txa.bp1.p;
|
|
if (mp != a->mp)
|
|
{
|
|
a->mp = mp;
|
|
FIRCORE::setMp_fircore (a->p, a->mp);
|
|
}
|
|
a = txa.bp2.p;
|
|
if (mp != a->mp)
|
|
{
|
|
a->mp = mp;
|
|
FIRCORE::setMp_fircore (a->p, a->mp);
|
|
}
|
|
}
|
|
|
|
} // namespace WDSP
|