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sdrangel/wdsp/eq.cpp

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/* eq.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 "eq.hpp"
#include "eqp.hpp"
#include "fircore.hpp"
#include "fir.hpp"
#include "RXA.hpp"
#include "TXA.hpp"
namespace WDSP {
/********************************************************************************************************
* *
* Overlap-Save Equalizer *
* *
********************************************************************************************************/
float* EQ::eq_mults (int size, int nfreqs, float* F, float* G, float samplerate, float scale, int ctfmode, int wintype)
{
float* impulse = EQP::eq_impulse (size + 1, nfreqs, F, G, samplerate, scale, ctfmode, wintype);
float* mults = FIR::fftcv_mults(2 * size, impulse);
delete[] (impulse);
return mults;
}
void EQ::calc_eq (EQ *a)
{
a->scale = 1.0 / (float)(2 * a->size);
a->infilt = new float[2 * a->size * 2]; // (float *)malloc0(2 * a->size * sizeof(complex));
a->product = new float[2 * a->size * 2]; // (float *)malloc0(2 * a->size * sizeof(complex));
a->CFor = fftwf_plan_dft_1d(2 * a->size, (fftwf_complex *)a->infilt, (fftwf_complex *)a->product, FFTW_FORWARD, FFTW_PATIENT);
a->CRev = fftwf_plan_dft_1d(2 * a->size, (fftwf_complex *)a->product, (fftwf_complex *)a->out, FFTW_BACKWARD, FFTW_PATIENT);
a->mults = EQ::eq_mults(a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
}
void EQ::decalc_eq (EQ *a)
{
fftwf_destroy_plan(a->CRev);
fftwf_destroy_plan(a->CFor);
delete[] (a->mults);
delete[] (a->product);
delete[] (a->infilt);
}
EQ* EQ::create_eq (int run, int size, float *in, float *out, int nfreqs, float* F, float* G, int ctfmode, int wintype, int samplerate)
{
EQ *a = new EQ;
a->run = run;
a->size = size;
a->in = in;
a->out = out;
a->nfreqs = nfreqs;
a->F = new float[a->nfreqs + 1]; // (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->G = new float[a->nfreqs + 1]; // (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
memcpy (a->F, F, (nfreqs + 1) * sizeof (float));
memcpy (a->G, G, (nfreqs + 1) * sizeof (float));
a->ctfmode = ctfmode;
a->wintype = wintype;
a->samplerate = (float)samplerate;
calc_eq (a);
return a;
}
void EQ::destroy_eq (EQ *a)
{
decalc_eq (a);
delete[] (a->G);
delete[] (a->F);
delete[] (a);
}
void EQ::flush_eq (EQ *a)
{
std::fill(a->infilt, a->infilt + 2 * a->size * 2, 0);
}
void EQ::xeq (EQ *a)
{
int i;
float I, Q;
if (a->run)
{
std::copy(a->in, a->in + a->size * 2, &(a->infilt[2 * a->size]));
fftwf_execute (a->CFor);
for (i = 0; i < 2 * a->size; i++)
{
I = a->product[2 * i + 0];
Q = a->product[2 * i + 1];
a->product[2 * i + 0] = I * a->mults[2 * i + 0] - Q * a->mults[2 * i + 1];
a->product[2 * i + 1] = I * a->mults[2 * i + 1] + Q * a->mults[2 * i + 0];
}
fftwf_execute (a->CRev);
std::copy(&(a->infilt[2 * a->size]), &(a->infilt[2 * a->size]) + a->size * 2, a->infilt);
}
else if (a->in != a->out)
std::copy( a->in, a->in + a->size * 2, a->out);
}
void EQ::setBuffers_eq (EQ *a, float* in, float* out)
{
decalc_eq (a);
a->in = in;
a->out = out;
calc_eq (a);
}
void EQ::setSamplerate_eq (EQ *a, int rate)
{
decalc_eq (a);
a->samplerate = rate;
calc_eq (a);
}
void EQ::setSize_eq (EQ *a, int size)
{
decalc_eq (a);
a->size = size;
calc_eq (a);
}
/********************************************************************************************************
* *
* Overlap-Save Equalizer: RXA Properties *
* *
********************************************************************************************************/
/* // UNCOMMENT properties when a pointer is in place in rxa
PORT
void SetRXAEQRun (int channel, int run)
{
ch.csDSP.lock();
rxa.eq->run = run;
ch.csDSP.unlock();
}
PORT
void SetRXAEQProfile (int channel, int nfreqs, float* F, float* G)
{
EQ a;
ch.csDSP.lock();
a = rxa.eq;
delete[] (a->G);
delete[] (a->F);
a->nfreqs = nfreqs;
a->F = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->G = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
memcpy (a->F, F, (nfreqs + 1) * sizeof (float));
memcpy (a->G, G, (nfreqs + 1) * sizeof (float));
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetRXAEQCtfmode (int channel, int mode)
{
EQ a;
ch.csDSP.lock();
a = rxa.eq;
a->ctfmode = mode;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetRXAEQWintype (int channel, int wintype)
{
EQ a;
ch.csDSP.lock();
a = rxa.eq;
a->wintype = wintype;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetRXAGrphEQ (int channel, int *rxeq)
{ // three band equalizer (legacy compatibility)
EQ a;
ch.csDSP.lock();
a = rxa.eq;
delete[] (a->G);
delete[] (a->F);
a->nfreqs = 4;
a->F = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->G = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->F[1] = 150.0;
a->F[2] = 400.0;
a->F[3] = 1500.0;
a->F[4] = 6000.0;
a->G[0] = (float)rxeq[0];
a->G[1] = (float)rxeq[1];
a->G[2] = (float)rxeq[1];
a->G[3] = (float)rxeq[2];
a->G[4] = (float)rxeq[3];
a->ctfmode = 0;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetRXAGrphEQ10 (int channel, int *rxeq)
{ // ten band equalizer (legacy compatibility)
EQ a;
int i;
ch.csDSP.lock();
a = rxa.eq;
delete[] (a->G);
delete[] (a->F);
a->nfreqs = 10;
a->F = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->G = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->F[1] = 32.0;
a->F[2] = 63.0;
a->F[3] = 125.0;
a->F[4] = 250.0;
a->F[5] = 500.0;
a->F[6] = 1000.0;
a->F[7] = 2000.0;
a->F[8] = 4000.0;
a->F[9] = 8000.0;
a->F[10] = 16000.0;
for (i = 0; i <= a->nfreqs; i++)
a->G[i] = (float)rxeq[i];
a->ctfmode = 0;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
*/
/********************************************************************************************************
* *
* Overlap-Save Equalizer: TXA Properties *
* *
********************************************************************************************************/
/* // UNCOMMENT properties when a pointer is in place in rxa
PORT
void SetTXAEQRun (int channel, int run)
{
ch.csDSP.lock();
txa.eq->run = run;
ch.csDSP.unlock();
}
PORT
void SetTXAEQProfile (int channel, int nfreqs, float* F, float* G)
{
EQ a;
ch.csDSP.lock();
a = txa.eq;
delete[] (a->G);
delete[] (a->F);
a->nfreqs = nfreqs;
a->F = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->G = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
memcpy (a->F, F, (nfreqs + 1) * sizeof (float));
memcpy (a->G, G, (nfreqs + 1) * sizeof (float));
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetTXAEQCtfmode (int channel, int mode)
{
EQ a;
ch.csDSP.lock();
a = txa.eq;
a->ctfmode = mode;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetTXAEQMethod (int channel, int wintype)
{
EQ a;
ch.csDSP.lock();
a = txa.eq;
a->wintype = wintype;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetTXAGrphEQ (int channel, int *txeq)
{ // three band equalizer (legacy compatibility)
EQ a;
ch.csDSP.lock();
a = txa.eq;
delete[] (a->G);
delete[] (a->F);
a->nfreqs = 4;
a->F = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->G = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->F[1] = 150.0;
a->F[2] = 400.0;
a->F[3] = 1500.0;
a->F[4] = 6000.0;
a->G[0] = (float)txeq[0];
a->G[1] = (float)txeq[1];
a->G[2] = (float)txeq[1];
a->G[3] = (float)txeq[2];
a->G[4] = (float)txeq[3];
a->ctfmode = 0;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
PORT
void SetTXAGrphEQ10 (int channel, int *txeq)
{ // ten band equalizer (legacy compatibility)
EQ a;
int i;
ch.csDSP.lock();
a = txa.eq;
delete[] (a->G);
delete[] (a->F);
a->nfreqs = 10;
a->F = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->G = (float *) malloc0 ((a->nfreqs + 1) * sizeof (float));
a->F[1] = 32.0;
a->F[2] = 63.0;
a->F[3] = 125.0;
a->F[4] = 250.0;
a->F[5] = 500.0;
a->F[6] = 1000.0;
a->F[7] = 2000.0;
a->F[8] = 4000.0;
a->F[9] = 8000.0;
a->F[10] = 16000.0;
for (i = 0; i <= a->nfreqs; i++)
a->G[i] = (float)txeq[i];
a->ctfmode = 0;
delete[] (a->mults);
a->mults = eq_mults (a->size, a->nfreqs, a->F, a->G, a->samplerate, a->scale, a->ctfmode, a->wintype);
ch.csDSP.unlock();
}
*/
} // namespace WDSP
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