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WDSP: FIROPT rework
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f4exb
parent
e48dc22793
commit
12f4d0a0fd
211
wdsp/firopt.cpp
211
wdsp/firopt.cpp
@ -37,172 +37,169 @@ namespace WDSP {
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* *
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********************************************************************************************************/
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void FIROPT::plan_firopt (FIROPT *a)
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void FIROPT::plan()
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{
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// must call for change in 'nc', 'size', 'out'
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int i;
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a->nfor = a->nc / a->size;
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a->buffidx = 0;
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a->idxmask = a->nfor - 1;
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a->fftin = new float[2 * a->size * 2];
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a->fftout = new float*[a->nfor];
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a->fmask = new float*[a->nfor];
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a->maskgen = new float[2 * a->size * 2];
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a->pcfor = new fftwf_plan[a->nfor];
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a->maskplan = new fftwf_plan[a->nfor];
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for (i = 0; i < a->nfor; i++)
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nfor = nc / size;
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buffidx = 0;
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idxmask = nfor - 1;
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fftin.resize(2 * size * 2);
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fftout.resize(nfor);
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fmask.resize(nfor);
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maskgen.resize(2 * size * 2);
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pcfor.resize(nfor);
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maskplan.resize(nfor);
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for (int i = 0; i < nfor; i++)
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{
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a->fftout[i] = new float[2 * a->size * 2];
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a->fmask[i] = new float[2 * a->size * 2];
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a->pcfor[i] = fftwf_plan_dft_1d(
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2 * a->size,
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(fftwf_complex *)a->fftin,
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(fftwf_complex *)a->fftout[i],
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fftout[i].resize(2 * size * 2);
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fmask[i].resize(2 * size * 2);
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pcfor[i] = fftwf_plan_dft_1d(
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2 * size,
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(fftwf_complex *)fftin.data(),
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(fftwf_complex *)fftout[i].data(),
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FFTW_FORWARD,
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FFTW_PATIENT
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);
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a->maskplan[i] = fftwf_plan_dft_1d(
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2 * a->size,
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(fftwf_complex *)a->maskgen,
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(fftwf_complex *)a->fmask[i],
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maskplan[i] = fftwf_plan_dft_1d(
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2 * size,
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(fftwf_complex *)maskgen.data(),
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(fftwf_complex *)fmask[i].data(),
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FFTW_FORWARD,
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FFTW_PATIENT
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);
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}
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a->accum = new float[2 * a->size * 2];
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a->crev = fftwf_plan_dft_1d(
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2 * a->size,
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(fftwf_complex *)a->accum,
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(fftwf_complex *)a->out,
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accum.resize(2 * size * 2);
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crev = fftwf_plan_dft_1d(
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2 * size,
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(fftwf_complex *)accum.data(),
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(fftwf_complex *)out,
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FFTW_BACKWARD,
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FFTW_PATIENT
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);
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}
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void FIROPT::calc_firopt (FIROPT *a)
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void FIROPT::calc()
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{
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// call for change in frequency, rate, wintype, gain
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// must also call after a call to plan_firopt()
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std::vector<float> impulse;
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FIR::fir_bandpass (impulse, a->nc, a->f_low, a->f_high, a->samplerate, a->wintype, 1, a->gain);
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a->buffidx = 0;
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for (int i = 0; i < a->nfor; i++)
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FIR::fir_bandpass (impulse, nc, f_low, f_high, samplerate, wintype, 1, gain);
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buffidx = 0;
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for (int i = 0; i < nfor; i++)
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{
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// I right-justified the impulse response => take output from left side of output buff, discard right side
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// Be careful about flipping an asymmetrical impulse response.
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std::copy(&(impulse[2 * a->size * i]), &(impulse[2 * a->size * i]) + a->size * 2, &(a->maskgen[2 * a->size]));
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fftwf_execute (a->maskplan[i]);
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std::copy(&(impulse[2 * size * i]), &(impulse[2 * size * i]) + size * 2, &(maskgen[2 * size]));
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fftwf_execute (maskplan[i]);
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}
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}
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FIROPT* FIROPT::create_firopt (int run, int position, int size, float* in, float* out,
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int nc, float f_low, float f_high, int samplerate, int wintype, float gain)
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FIROPT::FIROPT(
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int _run,
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int _position,
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int _size,
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float* _in,
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float* _out,
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int _nc,
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float _f_low,
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float _f_high,
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int _samplerate,
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int _wintype,
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float _gain
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)
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{
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FIROPT *a = new FIROPT;
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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->in = in;
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a->out = out;
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a->nc = nc;
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a->f_low = f_low;
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a->f_high = f_high;
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a->samplerate = (float) samplerate;
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a->wintype = wintype;
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a->gain = gain;
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plan_firopt (a);
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calc_firopt (a);
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return a;
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run = _run;
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position = _position;
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size = _size;
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in = _in;
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out = _out;
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nc = _nc;
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f_low = _f_low;
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f_high = _f_high;
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samplerate = (float) _samplerate;
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wintype = _wintype;
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gain = _gain;
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plan();
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calc();
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}
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void FIROPT::deplan_firopt (FIROPT *a)
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void FIROPT::deplan()
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{
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int i;
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fftwf_destroy_plan (a->crev);
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delete[] (a->accum);
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for (i = 0; i < a->nfor; i++)
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fftwf_destroy_plan (crev);
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for (int i = 0; i < nfor; i++)
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{
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delete[] (a->fftout[i]);
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delete[] (a->fmask[i]);
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fftwf_destroy_plan (a->pcfor[i]);
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fftwf_destroy_plan (a->maskplan[i]);
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fftwf_destroy_plan (pcfor[i]);
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fftwf_destroy_plan (maskplan[i]);
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}
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delete[] (a->maskplan);
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delete[] (a->pcfor);
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delete[] (a->maskgen);
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delete[] (a->fmask);
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delete[] (a->fftout);
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delete[] (a->fftin);
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}
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void FIROPT::destroy_firopt (FIROPT *a)
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FIROPT::~FIROPT()
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{
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deplan_firopt (a);
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delete (a);
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deplan();
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}
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void FIROPT::flush_firopt (FIROPT *a)
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void FIROPT::flush()
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{
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std::fill(a->fftin, a->fftin + 2 * a->size * 2, 0);
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for (int i = 0; i < a->nfor; i++)
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std::fill(a->fftout[i], a->fftout[i] + 2 * a->size * 2, 0);
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a->buffidx = 0;
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std::fill(fftin.begin(), fftin.end(), 0);
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for (int i = 0; i < nfor; i++)
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std::fill(fftout[i].begin(), fftout[i].end(), 0);
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buffidx = 0;
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}
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void FIROPT::xfiropt (FIROPT *a, int pos)
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void FIROPT::execute(int pos)
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{
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if (a->run && (a->position == pos))
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if (run && (position == pos))
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{
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int k;
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std::copy(a->in, a->in + a->size * 2, &(a->fftin[2 * a->size]));
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fftwf_execute (a->pcfor[a->buffidx]);
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k = a->buffidx;
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std::fill(a->accum, a->accum + 2 * a->size * 2, 0);
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for (int j = 0; j < a->nfor; j++)
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std::copy(in, in + size * 2, &(fftin[2 * size]));
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fftwf_execute (pcfor[buffidx]);
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k = buffidx;
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std::fill(accum.begin(), accum.end(), 0);
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for (int j = 0; j < nfor; j++)
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{
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for (int i = 0; i < 2 * a->size; i++)
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for (int i = 0; i < 2 * size; i++)
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{
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a->accum[2 * i + 0] += a->fftout[k][2 * i + 0] * a->fmask[j][2 * i + 0] - a->fftout[k][2 * i + 1] * a->fmask[j][2 * i + 1];
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a->accum[2 * i + 1] += a->fftout[k][2 * i + 0] * a->fmask[j][2 * i + 1] + a->fftout[k][2 * i + 1] * a->fmask[j][2 * i + 0];
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accum[2 * i + 0] += fftout[k][2 * i + 0] * fmask[j][2 * i + 0] - fftout[k][2 * i + 1] * fmask[j][2 * i + 1];
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accum[2 * i + 1] += fftout[k][2 * i + 0] * fmask[j][2 * i + 1] + fftout[k][2 * i + 1] * fmask[j][2 * i + 0];
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}
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k = (k + a->idxmask) & a->idxmask;
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k = (k + idxmask) & idxmask;
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}
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a->buffidx = (a->buffidx + 1) & a->idxmask;
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fftwf_execute (a->crev);
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std::copy(&(a->fftin[2 * a->size]), &(a->fftin[2 * a->size]) + a->size * 2, a->fftin);
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buffidx = (buffidx + 1) & idxmask;
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fftwf_execute (crev);
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std::copy(&(fftin[2 * size]), &(fftin[2 * size]) + size * 2, fftin.begin());
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}
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else if (a->in != a->out)
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std::copy( a->in, a->in + a->size * 2, a->out);
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else if (in != out)
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std::copy( in, in + size * 2, out);
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}
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void FIROPT::setBuffers_firopt (FIROPT *a, float* in, float* out)
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void FIROPT::setBuffers(float* _in, float* _out)
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{
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a->in = in;
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a->out = out;
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deplan_firopt (a);
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plan_firopt (a);
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calc_firopt (a);
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in = _in;
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out = _out;
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deplan();
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plan();
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calc();
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}
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void FIROPT::setSamplerate_firopt (FIROPT *a, int rate)
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void FIROPT::setSamplerate(int _rate)
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{
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a->samplerate = (float) rate;
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calc_firopt (a);
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samplerate = (float) _rate;
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calc();
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}
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void FIROPT::setSize_firopt (FIROPT *a, int size)
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void FIROPT::setSize(int _size)
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{
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a->size = size;
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deplan_firopt (a);
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plan_firopt (a);
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calc_firopt (a);
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size = _size;
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deplan();
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plan();
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calc();
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}
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void FIROPT::setFreqs_firopt (FIROPT *a, float f_low, float f_high)
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void FIROPT::setFreqs(float _f_low, float _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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calc_firopt (a);
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f_low = _f_low;
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f_high = _f_high;
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calc();
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}
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@ -43,6 +43,7 @@ namespace WDSP {
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class WDSP_API FIROPT
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{
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public:
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int run; // run control
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int position; // position at which to execute
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int size; // input/output buffer size, power of two
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@ -55,31 +56,46 @@ class WDSP_API FIROPT
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int wintype; // filter window type
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float gain; // filter gain
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int nfor; // number of buffers in delay line
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float* fftin; // fft input buffer
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float** fmask; // frequency domain masks
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float** fftout; // fftout delay line
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float* accum; // frequency domain accumulator
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std::vector<float> fftin; // fft input buffer
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std::vector<std::vector<float>> fmask; // frequency domain masks
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std::vector<std::vector<float>> fftout; // fftout delay line
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std::vector<float> accum; // frequency domain accumulator
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int buffidx; // fft out buffer index
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int idxmask; // mask for index computations
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float* maskgen; // input for mask generation FFT
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fftwf_plan* pcfor; // array of forward FFT plans
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std::vector<float> maskgen; // input for mask generation FFT
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std::vector<fftwf_plan> pcfor; // array of forward FFT plans
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fftwf_plan crev; // reverse fft plan
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fftwf_plan* maskplan; // plans for frequency domain masks
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std::vector<fftwf_plan> maskplan; // plans for frequency domain masks
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static FIROPT* create_firopt (int run, int position, int size, float* in, float* out,
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int nc, float f_low, float f_high, int samplerate, int wintype, float gain);
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static void xfiropt (FIROPT *a, int pos);
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static void destroy_firopt (FIROPT *a);
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static void flush_firopt (FIROPT *a);
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static void setBuffers_firopt (FIROPT *a, float* in, float* out);
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static void setSamplerate_firopt (FIROPT *a, int rate);
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static void setSize_firopt (FIROPT *a, int size);
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static void setFreqs_firopt (FIROPT *a, float f_low, float f_high);
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FIROPT(
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int run,
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int position,
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int size,
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float* in,
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float* out,
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int nc,
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float f_low,
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float f_high,
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int samplerate,
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int wintype,
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float gain
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);
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FIROPT(const FIROPT&) = delete;
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FIROPT& operator=(const FIROPT& other) = delete;
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~FIROPT();
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void destroy();
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void flush();
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void execute(int pos);
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void setBuffers(float* in, float* out);
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void setSamplerate(int rate);
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void setSize(int size);
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void setFreqs(float f_low, float f_high);
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private:
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static void plan_firopt (FIROPT *a);
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static void calc_firopt (FIROPT *a);
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static void deplan_firopt (FIROPT *a);
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void plan();
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void calc();
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void deplan();
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};
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} // namespace WDSP
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10
wdsp/fmd.cpp
10
wdsp/fmd.cpp
@ -168,8 +168,8 @@ FMD::FMD(
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FMD::~FMD()
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{
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delete (paud);
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delete (pde);
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delete paud;
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delete pde;
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decalc();
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}
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@ -281,7 +281,7 @@ void FMD::setSize(int _size)
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calc();
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audio.resize(size * 2);
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// de-emphasis filter
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delete (pde);
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delete pde;
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std::vector<float> impulse(2 * nc_de);
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FCurve::fc_impulse (
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impulse,
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@ -298,7 +298,7 @@ void FMD::setSize(int _size)
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);
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pde = new FIRCORE(size, audio.data(), out, nc_de, mp_de, impulse.data());
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// audio filter
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delete (paud);
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delete paud;
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std::vector<float> impulseb;
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FIR::fir_bandpass(impulseb, nc_aud, 0.8 * f_low, 1.1 * f_high, rate, 0, 1, afgain / (2.0 * size));
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paud = new FIRCORE(size, out, out, nc_aud, mp_aud, impulseb.data());
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@ -363,8 +363,6 @@ void FMD::setMPde(int mp)
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void FMD::setNCaud(int nc)
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{
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float* impulse;
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if (nc_aud != nc)
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{
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nc_aud = nc;
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