293 lines
7.2 KiB
C++
293 lines
7.2 KiB
C++
// -----------------------------------------------------------------------
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// Copyright (C) 2003-2011 Fons Adriaensen <fons@linuxaudio.org>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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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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//
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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// -----------------------------------------------------------------------
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#ifndef __ZITA_H__
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#define __ZITA_H__
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#include "effects/effect.h"
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namespace Ms {
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class EffectGui;
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//---------------------------------------------------------
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// Pareq
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//---------------------------------------------------------
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class Pareq
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{
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enum { BYPASS, STATIC, SMOOTH, MAXCH = 4 };
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void calcpar1 (int nsamp, float g, float f);
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void process1 (int nsamp, float*);
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volatile int16_t _touch0;
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volatile int16_t _touch1;
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#if 0 // not yet (?) used
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bool _bypass;
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#endif
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int _state;
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float _fsamp;
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float _g;
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float _g0, _g1;
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float _f;
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float _f0, _f1;
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float _c1, _dc1;
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float _c2, _dc2;
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float _gg, _dgg;
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float _z1 [MAXCH];
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float _z2 [MAXCH];
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public:
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Pareq();
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void setfsamp(float fsamp);
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void setparam(float f, float g) {
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_f = f;
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_g = g;
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_f0 = f;
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_g0 = powf (10.0f, 0.05f * g);
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_touch0++;
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}
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void set_gn(float g) { setparam(_f, g); }
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float gn() const { return _g; }
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void set_fr(float f) { setparam(f, _g); }
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float fr() const { return _f; }
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void reset();
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void prepare(int nsamp);
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void process(int nsamp, float* data) {
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if (_state != BYPASS)
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process1(nsamp, data);
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}
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};
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//---------------------------------------------------------
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// Diff1
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//---------------------------------------------------------
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class Diff1
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{
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friend class ZitaReverb;
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int _i;
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float _c;
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int _size = 0;
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float* _line = 0;
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Diff1() {}
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~Diff1();
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void init(int size, float c);
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void fini();
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float process(float x) {
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float z = _line [_i];
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x -= _c * z;
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_line [_i] = x;
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if (++_i == _size)
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_i = 0;
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return z + _c * x;
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}
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};
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//---------------------------------------------------------
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// Filt1
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//---------------------------------------------------------
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class Filt1
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{
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friend class ZitaReverb;
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Filt1 () : _slo (0), _shi (0) {}
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~Filt1 () {}
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void set_params (float del, float tmf, float tlo, float wlo, float thi, float chi);
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float process(float x) {
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_slo += _wlo * (x - _slo) + 1e-10f;
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x += _glo * _slo;
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_shi += _whi * (x - _shi);
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return _gmf * _shi;
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}
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float _gmf;
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float _glo;
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float _wlo;
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float _whi;
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float _slo;
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float _shi;
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};
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//---------------------------------------------------------
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// Delay
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//---------------------------------------------------------
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class Delay
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{
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friend class ZitaReverb;
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Delay();
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~Delay();
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void init (int size);
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void fini ();
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float read () { return _line [_i]; }
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void write (float x) {
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_line [_i++] = x;
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if (_i == _size)
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_i = 0;
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}
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int _i;
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int _size;
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float *_line;
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};
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//---------------------------------------------------------
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// Vdelay
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//---------------------------------------------------------
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class Vdelay
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{
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friend class ZitaReverb;
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Vdelay();
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~Vdelay();
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void init (int size);
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void fini ();
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void set_delay (int del);
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float read () {
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float x = _line [_ir++];
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if (_ir == _size)
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_ir = 0;
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return x;
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}
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void write (float x) {
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_line [_iw++] = x;
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if (_iw == _size)
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_iw = 0;
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}
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int _ir;
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int _iw;
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int _size;
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float* _line;
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};
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//---------------------------------------------------------
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// ZitaReverb
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//---------------------------------------------------------
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class ZitaReverb : public Effect
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{
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Q_OBJECT
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float _fsamp;
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Vdelay _vdelay0;
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Vdelay _vdelay1;
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Diff1 _diff1[8];
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Filt1 _filt1[8];
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Delay _delay[8];
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volatile int _cntA1;
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volatile int _cntB1;
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volatile int _cntC1;
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int _cntA2;
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int _cntB2;
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int _cntC2;
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float _ipdel;
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float _xover;
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float _rtlow;
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float _rtmid;
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float _fdamp;
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float _opmix;
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float _rgxyz;
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float _g0, _d0;
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float _g1, _d1;
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Pareq _pareq1;
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Pareq _pareq2;
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static float _tdiff1 [8];
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static float _tdelay [8];
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int _fragm;
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int _nsamp;
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void prepare(int n);
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public:
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ZitaReverb() : Effect() {}
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~ZitaReverb();
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virtual void init(float fsamp);
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void fini();
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virtual void process(int n, float* inp, float* out);
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void set_delay(float v) { _ipdel = v; _cntA1++; }
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float delay() const { return _ipdel; }
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void set_xover(float v) { _xover = v; _cntB1++; }
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float xover() const { return _xover; }
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void set_rtlow(float v) { _rtlow = v; _cntB1++; }
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float rtlow() const { return _rtlow; }
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void set_rtmid(float v) { _rtmid = v; _cntB1++; _cntC1++; }
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float rtmid() const { return _rtmid; }
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void set_fdamp(float v) { _fdamp = v; _cntB1++; }
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float fdamp() const { return _fdamp; }
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void set_eq1fr(float f) { _pareq1.set_fr(f); }
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float eq1fr() const { return _pareq1.fr(); }
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void set_eq1gn(float f) { _pareq1.set_gn(f); }
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float eq1gn() const { return _pareq1.gn(); }
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void set_eq2fr(float f) { _pareq2.set_fr(f); }
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float eq2fr() const { return _pareq2.fr(); }
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void set_eq2gn(float f) { _pareq2.set_gn(f); }
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float eq2gn() const { return _pareq2.gn(); }
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void set_opmix(float v) { _opmix = v; _cntC1++; }
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float opmix() const { return _opmix; }
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virtual const char* name() const { return "Zita1"; }
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virtual EffectGui* gui();
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virtual const std::vector<ParDescr>& parDescr() const;
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virtual void setNValue(int parameter, double value);
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virtual double nvalue(int idx) const;
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virtual SynthesizerGroup state() const;
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virtual void setState(const SynthesizerGroup&);
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};
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}
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#endif
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