first commit
This commit is contained in:
Uladzimir Karpenka
+594
@@ -0,0 +1,594 @@
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/* bandpass.c
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2013, 2016, 2017 Warren Pratt, NR0V
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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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#include "comm.h"
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/********************************************************************************************************
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* *
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* Overlap-Save Bandpass *
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* *
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********************************************************************************************************/
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void calc_bps (BPS a)
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{
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double* impulse;
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a->infilt = (double *)malloc0(2 * a->size * sizeof(complex));
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a->product = (double *)malloc0(2 * a->size * sizeof(complex));
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impulse = fir_bandpass(a->size + 1, a->f_low, a->f_high, a->samplerate, a->wintype, 1, 1.0 / (double)(2 * a->size));
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a->mults = fftcv_mults(2 * a->size, impulse);
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a->CFor = fftw_plan_dft_1d(2 * a->size, (fftw_complex *)a->infilt, (fftw_complex *)a->product, FFTW_FORWARD, FFTW_PATIENT);
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a->CRev = fftw_plan_dft_1d(2 * a->size, (fftw_complex *)a->product, (fftw_complex *)a->out, FFTW_BACKWARD, FFTW_PATIENT);
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_aligned_free(impulse);
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}
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void decalc_bps (BPS a)
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{
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fftw_destroy_plan(a->CRev);
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fftw_destroy_plan(a->CFor);
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_aligned_free(a->mults);
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_aligned_free(a->product);
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_aligned_free(a->infilt);
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}
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BPS create_bps (int run, int position, int size, double* in, double* out,
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double f_low, double f_high, int samplerate, int wintype, double gain)
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{
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BPS a = (BPS) malloc0 (sizeof (bps));
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a->run = run;
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a->position = position;
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a->size = size;
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a->samplerate = (double)samplerate;
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a->wintype = wintype;
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a->gain = gain;
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a->in = in;
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a->out = out;
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a->f_low = f_low;
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a->f_high = f_high;
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calc_bps (a);
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return a;
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}
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void destroy_bps (BPS a)
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{
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decalc_bps (a);
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_aligned_free (a);
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}
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void flush_bps (BPS a)
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{
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memset (a->infilt, 0, 2 * a->size * sizeof (complex));
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}
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void xbps (BPS a, int pos)
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{
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int i;
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double I, Q;
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if (a->run && pos == a->position)
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{
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memcpy (&(a->infilt[2 * a->size]), a->in, a->size * sizeof (complex));
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fftw_execute (a->CFor);
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for (i = 0; i < 2 * a->size; i++)
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{
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I = a->gain * a->product[2 * i + 0];
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Q = a->gain * a->product[2 * i + 1];
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a->product[2 * i + 0] = I * a->mults[2 * i + 0] - Q * a->mults[2 * i + 1];
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a->product[2 * i + 1] = I * a->mults[2 * i + 1] + Q * a->mults[2 * i + 0];
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}
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fftw_execute (a->CRev);
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memcpy (a->infilt, &(a->infilt[2 * a->size]), a->size * sizeof(complex));
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}
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else if (a->in != a->out)
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memcpy (a->out, a->in, a->size * sizeof (complex));
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}
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void setBuffers_bps (BPS a, double* in, double* out)
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{
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decalc_bps (a);
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a->in = in;
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a->out = out;
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calc_bps (a);
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}
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void setSamplerate_bps (BPS a, int rate)
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{
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decalc_bps (a);
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a->samplerate = rate;
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calc_bps (a);
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}
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void setSize_bps (BPS a, int size)
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{
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decalc_bps (a);
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a->size = size;
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calc_bps (a);
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}
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void setFreqs_bps (BPS a, double f_low, double f_high)
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{
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decalc_bps (a);
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a->f_low = f_low;
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a->f_high = f_high;
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calc_bps (a);
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}
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/********************************************************************************************************
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* *
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* Overlap-Save Bandpass: RXA Properties *
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* *
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********************************************************************************************************/
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/* // UNCOMMENT properties when a pointer is in place in rxa[channel]
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PORT
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void SetRXABPSRun (int channel, int run)
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{
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EnterCriticalSection (&ch[channel].csDSP);
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rxa[channel].bp1.p->run = run;
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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PORT
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void SetRXABPSFreqs (int channel, double f_low, double f_high)
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{
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double* impulse;
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BPS a1;
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EnterCriticalSection (&ch[channel].csDSP);
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a1 = rxa[channel].bp1.p;
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if ((f_low != a1->f_low) || (f_high != a1->f_high))
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{
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a1->f_low = f_low;
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a1->f_high = f_high;
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_aligned_free (a1->mults);
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impulse = fir_bandpass(a1->size + 1, f_low, f_high, a1->samplerate, a1->wintype, 1, 1.0 / (double)(2 * a1->size));
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a1->mults = fftcv_mults (2 * a1->size, impulse);
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_aligned_free (impulse);
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}
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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PORT
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void SetRXABPSWindow (int channel, int wintype)
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{
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double* impulse;
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BPS a1;
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EnterCriticalSection (&ch[channel].csDSP);
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a1 = rxa[channel].bp1.p;
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if ((a1->wintype != wintype))
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{
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a1->wintype = wintype;
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_aligned_free (a1->mults);
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impulse = fir_bandpass(a1->size + 1, a1->f_low, a1->f_high, a1->samplerate, a1->wintype, 1, 1.0 / (double)(2 * a1->size));
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a1->mults = fftcv_mults (2 * a1->size, impulse);
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_aligned_free (impulse);
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}
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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*/
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/********************************************************************************************************
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* *
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* TXA Properties *
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* *
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********************************************************************************************************/
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/* // UNCOMMENT properties when pointers in place in txa[channel]
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PORT
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void SetTXABPSRun (int channel, int run)
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{
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EnterCriticalSection (&ch[channel].csDSP);
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txa[channel].bp1.p->run = run;
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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PORT
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void SetTXABPSFreqs (int channel, double f_low, double f_high)
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{
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double* impulse;
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BPS a;
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EnterCriticalSection (&ch[channel].csDSP);
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a = txa[channel].bp0.p;
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if ((f_low != a->f_low) || (f_high != a->f_high))
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{
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a->f_low = f_low;
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a->f_high = f_high;
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_aligned_free (a->mults);
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impulse = fir_bandpass(a->size + 1, f_low, f_high, a->samplerate, a->wintype, 1, 1.0 / (double)(2 * a->size));
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a->mults = fftcv_mults (2 * a->size, impulse);
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_aligned_free (impulse);
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}
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a = txa[channel].bp1.p;
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if ((f_low != a->f_low) || (f_high != a->f_high))
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{
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a->f_low = f_low;
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a->f_high = f_high;
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_aligned_free (a->mults);
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impulse = fir_bandpass(a->size + 1, f_low, f_high, a->samplerate, a->wintype, 1, 1.0 / (double)(2 * a->size));
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a->mults = fftcv_mults (2 * a->size, impulse);
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_aligned_free (impulse);
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}
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a = txa[channel].bp2.p;
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if ((f_low != a->f_low) || (f_high != a->f_high))
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{
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a->f_low = f_low;
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a->f_high = f_high;
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_aligned_free (a->mults);
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impulse = fir_bandpass(a->size + 1, f_low, f_high, a->samplerate, a->wintype, 1, 1.0 / (double)(2 * a->size));
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a->mults = fftcv_mults (2 * a->size, impulse);
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_aligned_free (impulse);
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}
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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PORT
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void SetTXABPSWindow (int channel, int wintype)
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{
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double* impulse;
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BPS a;
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EnterCriticalSection (&ch[channel].csDSP);
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a = txa[channel].bp0.p;
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if (a->wintype != wintype)
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{
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a->wintype = wintype;
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_aligned_free (a->mults);
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impulse = fir_bandpass(a->size + 1, a->f_low, a->f_high, a->samplerate, a->wintype, 1, 1.0 / (double)(2 * a->size));
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a->mults = fftcv_mults (2 * a->size, impulse);
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_aligned_free (impulse);
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}
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a = txa[channel].bp1.p;
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if (a->wintype != wintype)
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{
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a->wintype = wintype;
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_aligned_free (a->mults);
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impulse = fir_bandpass(a->size + 1, a->f_low, a->f_high, a->samplerate, a->wintype, 1, 1.0 / (double)(2 * a->size));
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a->mults = fftcv_mults (2 * a->size, impulse);
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_aligned_free (impulse);
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}
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a = txa[channel].bp2.p;
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if (a->wintype != wintype)
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{
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a->wintype = wintype;
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_aligned_free (a->mults);
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impulse = fir_bandpass (a->size + 1, a->f_low, a->f_high, a->samplerate, a->wintype, 1, 1.0 / (double)(2 * a->size));
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a->mults = fftcv_mults (2 * a->size, impulse);
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_aligned_free (impulse);
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}
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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*/
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/********************************************************************************************************
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* *
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* Partitioned Overlap-Save Bandpass *
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* *
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********************************************************************************************************/
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BANDPASS create_bandpass (int run, int position, int size, int nc, int mp, double* in, double* out,
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double f_low, double f_high, int samplerate, int wintype, double gain)
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{
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// NOTE: 'nc' must be >= 'size'
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BANDPASS a = (BANDPASS) malloc0 (sizeof (bandpass));
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double* impulse;
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a->run = run;
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a->position = position;
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a->size = size;
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a->nc = nc;
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a->mp = mp;
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a->in = in;
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a->out = out;
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a->f_low = f_low;
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a->f_high = f_high;
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a->samplerate = samplerate;
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a->wintype = wintype;
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a->gain = gain;
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impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
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a->p = create_fircore (a->size, a->in, a->out, a->nc, a->mp, impulse);
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_aligned_free (impulse);
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return a;
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}
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void destroy_bandpass (BANDPASS a)
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{
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destroy_fircore (a->p);
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_aligned_free (a);
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}
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void flush_bandpass (BANDPASS a)
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{
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flush_fircore (a->p);
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}
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void xbandpass (BANDPASS a, int pos)
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{
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if (a->run && a->position == pos)
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xfircore (a->p);
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else if (a->out != a->in)
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memcpy (a->out, a->in, a->size * sizeof (complex));
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}
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void setBuffers_bandpass (BANDPASS a, double* in, double* out)
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{
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a->in = in;
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a->out = out;
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setBuffers_fircore (a->p, a->in, a->out);
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}
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void setSamplerate_bandpass (BANDPASS a, int rate)
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{
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double* impulse;
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a->samplerate = rate;
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impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
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setImpulse_fircore (a->p, impulse, 1);
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_aligned_free (impulse);
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}
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void setSize_bandpass (BANDPASS a, int size)
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{
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// NOTE: 'size' must be <= 'nc'
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double* impulse;
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a->size = size;
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setSize_fircore (a->p, a->size);
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// recalc impulse because scale factor is a function of size
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impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
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setImpulse_fircore (a->p, impulse, 1);
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_aligned_free (impulse);
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}
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void setGain_bandpass (BANDPASS a, double gain, int update)
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{
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double* impulse;
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a->gain = gain;
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impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
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setImpulse_fircore (a->p, impulse, update);
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_aligned_free (impulse);
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}
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void CalcBandpassFilter (BANDPASS a, double f_low, double f_high, double gain)
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{
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double* impulse;
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if ((a->f_low != f_low) || (a->f_high != f_high) || (a->gain != gain))
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{
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a->f_low = f_low;
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a->f_high = f_high;
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a->gain = gain;
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impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
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setImpulse_fircore (a->p, impulse, 1);
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_aligned_free (impulse);
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}
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}
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/********************************************************************************************************
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* *
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* RXA Properties *
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* *
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********************************************************************************************************/
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PORT
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void SetRXABandpassRun (int channel, int run)
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{
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EnterCriticalSection (&ch[channel].csDSP);
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rxa[channel].bp1.p->run = run;
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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PORT
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void SetRXABandpassFreqs (int channel, double f_low, double f_high)
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{
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double* impulse;
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BANDPASS a = rxa[channel].bp1.p;
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if ((f_low != a->f_low) || (f_high != a->f_high))
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{
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impulse = fir_bandpass (a->nc, f_low, f_high, a->samplerate,
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a->wintype, 1, a->gain / (double)(2 * a->size));
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setImpulse_fircore (a->p, impulse, 0);
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_aligned_free (impulse);
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EnterCriticalSection (&ch[channel].csDSP);
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a->f_low = f_low;
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a->f_high = f_high;
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setUpdate_fircore (a->p);
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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}
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PORT
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void SetRXABandpassWindow (int channel, int wintype)
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{
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double* impulse;
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BANDPASS a = rxa[channel].bp1.p;
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if ((a->wintype != wintype))
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{
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impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate,
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wintype, 1, a->gain / (double)(2 * a->size));
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setImpulse_fircore (a->p, impulse, 0);
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_aligned_free (impulse);
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EnterCriticalSection (&ch[channel].csDSP);
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a->wintype = wintype;
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setUpdate_fircore (a->p);
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LeaveCriticalSection (&ch[channel].csDSP);
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}
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}
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||||
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PORT
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void SetRXABandpassNC (int channel, int nc)
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{
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// NOTE: 'nc' must be >= 'size'
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double* impulse;
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BANDPASS a;
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EnterCriticalSection (&ch[channel].csDSP);
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||||
a = rxa[channel].bp1.p;
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if (nc != a->nc)
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{
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a->nc = nc;
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impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
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||||
setNc_fircore (a->p, a->nc, impulse);
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_aligned_free (impulse);
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}
|
||||
LeaveCriticalSection (&ch[channel].csDSP);
|
||||
}
|
||||
|
||||
PORT
|
||||
void SetRXABandpassMP (int channel, int mp)
|
||||
{
|
||||
BANDPASS a;
|
||||
a = rxa[channel].bp1.p;
|
||||
if (mp != a->mp)
|
||||
{
|
||||
a->mp = mp;
|
||||
setMp_fircore (a->p, a->mp);
|
||||
}
|
||||
}
|
||||
|
||||
/********************************************************************************************************
|
||||
* *
|
||||
* TXA Properties *
|
||||
* *
|
||||
********************************************************************************************************/
|
||||
|
||||
PORT
|
||||
void SetTXABandpassRun (int channel, int run)
|
||||
{
|
||||
EnterCriticalSection (&ch[channel].csDSP);
|
||||
txa[channel].bp1.p->run = run;
|
||||
LeaveCriticalSection (&ch[channel].csDSP);
|
||||
}
|
||||
|
||||
//PORT
|
||||
//void SetTXABandpassFreqs (int channel, double f_low, double f_high)
|
||||
//{
|
||||
// double* impulse;
|
||||
// BANDPASS a;
|
||||
// a = txa[channel].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 / (double)(2 * a->size));
|
||||
// setImpulse_fircore (a->p, impulse, 1);
|
||||
// _aligned_free (impulse);
|
||||
// }
|
||||
// a = txa[channel].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 / (double)(2 * a->size));
|
||||
// setImpulse_fircore (a->p, impulse, 1);
|
||||
// _aligned_free (impulse);
|
||||
// }
|
||||
// a = txa[channel].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 / (double)(2 * a->size));
|
||||
// setImpulse_fircore (a->p, impulse, 1);
|
||||
// _aligned_free (impulse);
|
||||
// }
|
||||
//}
|
||||
|
||||
PORT
|
||||
void SetTXABandpassWindow (int channel, int wintype)
|
||||
{
|
||||
double* impulse;
|
||||
BANDPASS a;
|
||||
a = txa[channel].bp0.p;
|
||||
if (a->wintype != wintype)
|
||||
{
|
||||
a->wintype = wintype;
|
||||
impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
|
||||
setImpulse_fircore (a->p, impulse, 1);
|
||||
_aligned_free (impulse);
|
||||
}
|
||||
a = txa[channel].bp1.p;
|
||||
if (a->wintype != wintype)
|
||||
{
|
||||
a->wintype = wintype;
|
||||
impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
|
||||
setImpulse_fircore (a->p, impulse, 1);
|
||||
_aligned_free (impulse);
|
||||
}
|
||||
a = txa[channel].bp2.p;
|
||||
if (a->wintype != wintype)
|
||||
{
|
||||
a->wintype = wintype;
|
||||
impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
|
||||
setImpulse_fircore (a->p, impulse, 1);
|
||||
_aligned_free (impulse);
|
||||
}
|
||||
}
|
||||
|
||||
PORT
|
||||
void SetTXABandpassNC (int channel, int nc)
|
||||
{
|
||||
// NOTE: 'nc' must be >= 'size'
|
||||
double* impulse;
|
||||
BANDPASS a;
|
||||
EnterCriticalSection (&ch[channel].csDSP);
|
||||
a = txa[channel].bp0.p;
|
||||
if (a->nc != nc)
|
||||
{
|
||||
a->nc = nc;
|
||||
impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
|
||||
setNc_fircore (a->p, a->nc, impulse);
|
||||
_aligned_free (impulse);
|
||||
}
|
||||
a = txa[channel].bp1.p;
|
||||
if (a->nc != nc)
|
||||
{
|
||||
a->nc = nc;
|
||||
impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
|
||||
setNc_fircore (a->p, a->nc, impulse);
|
||||
_aligned_free (impulse);
|
||||
}
|
||||
a = txa[channel].bp2.p;
|
||||
if (a->nc != nc)
|
||||
{
|
||||
a->nc = nc;
|
||||
impulse = fir_bandpass (a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain / (double)(2 * a->size));
|
||||
setNc_fircore (a->p, a->nc, impulse);
|
||||
_aligned_free (impulse);
|
||||
}
|
||||
LeaveCriticalSection (&ch[channel].csDSP);
|
||||
}
|
||||
|
||||
PORT
|
||||
void SetTXABandpassMP (int channel, int mp)
|
||||
{
|
||||
BANDPASS a;
|
||||
a = txa[channel].bp0.p;
|
||||
if (mp != a->mp)
|
||||
{
|
||||
a->mp = mp;
|
||||
setMp_fircore (a->p, a->mp);
|
||||
}
|
||||
a = txa[channel].bp1.p;
|
||||
if (mp != a->mp)
|
||||
{
|
||||
a->mp = mp;
|
||||
setMp_fircore (a->p, a->mp);
|
||||
}
|
||||
a = txa[channel].bp2.p;
|
||||
if (mp != a->mp)
|
||||
{
|
||||
a->mp = mp;
|
||||
setMp_fircore (a->p, a->mp);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user