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Diffstat (limited to 'src/zreverb.h')
| -rw-r--r-- | src/zreverb.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/zreverb.h b/src/zreverb.h new file mode 100644 index 0000000..2f9b905 --- /dev/null +++ b/src/zreverb.h @@ -0,0 +1,244 @@ +// ----------------------------------------------------------------------- +// +// Copyright (C) 2003-2013 Fons Adriaensen <fons@linuxaudio.org> +// +// 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., 675 Mass Ave, Cambridge, MA 02139, USA. +// +// ----------------------------------------------------------------------- + + +#ifndef __ZREVERB_H +#define __ZREVERB_H + +#include "pareq.h" + + +// ----------------------------------------------------------------------- + + +class Diff1 +{ +private: + + friend class Zreverb; + + Diff1 (void); + ~Diff1 (void); + + void init (int size, float c); + void fini (void); + void reset (void); + + float process (float x) + { + float z = _line [_i]; + x -= _c * z; + _line [_i] = x; + if (++_i == _size) _i = 0; + return z + _c * x; + } + + int _i; + float _c; + int _size; + float *_line; +}; + + +// ----------------------------------------------------------------------- + + +class Filt1 +{ +private: + + friend class Zreverb; + + Filt1 (void) : _slo (0), _shi (0) {} + ~Filt1 (void) {} + + void set_params (float del, float tmf, float tlo, float wlo, float thi, float chi); + + float process (float x) + { + _slo += _wlo * (x - _slo) + 1e-10f; + x += _glo * _slo; + _shi += _whi * (x - _shi); + return _gmf * _shi; + } + + void reset (void) + { + _slo = 0; + _shi = 0; + } + + float _gmf; + float _glo; + float _wlo; + float _whi; + float _slo; + float _shi; +}; + + + + +// ----------------------------------------------------------------------- + + +class Delay +{ +private: + + friend class Zreverb; + + Delay (void); + ~Delay (void); + + void init (int size); + void fini (void); + void reset (void); + + float read (void) + { + return _line [_i]; + } + + void write (float x) + { + _line [_i++] = x; + if (_i == _size) _i = 0; + } + + int _i; + int _size; + float *_line; +}; + + +// ----------------------------------------------------------------------- + + +class Vdelay +{ +private: + + friend class Zreverb; + + Vdelay (void); + ~Vdelay (void); + + void init (int size); + void fini (void); + void reset (void); + void set_delay (int del); + + void write (float x) + { + _line [_iwr++] = x; + if (_iwr == _size) _iwr = 0; + } + + float read0 (void) + { + float x = _line [_ir0++]; + if (_ir0 == _size) _ir0 = 0; + return x; + } + + float read1 (void) + { + float x = _line [_ir1++]; + if (_ir1 == _size) _ir1 = 0; + return x; + } + + int _iwr; + int _ir0; + int _ir1; + int _size; + float *_line; +}; + + +// ----------------------------------------------------------------------- + + +class Zreverb +{ +public: + + Zreverb (void); + ~Zreverb (void); + + void init (float fsamp, bool ambis); + void fini (void); + + void reset (void); + void prepare (int n); + void process (int n, float *inp [], float *out []); + + void set_delay (float v) { _ipdel = v; _cntA1++; } + void set_xover (float v) { _xover = v; _cntB1++; } + void set_rtlow (float v) { _rtlow = v; _cntB1++; } + void set_rtmid (float v) { _rtmid = v; _cntB1++; _cntC1++; } + void set_fdamp (float v) { _fdamp = v; _cntB1++; } + void set_opmix (float v) { _opmix = v; _cntC1++; } + void set_rgxyz (float v) { _rgxyz = v; _cntC1++; } + void set_eq1 (float f, float g) { _pareq1.setparam (f, g); } + void set_eq2 (float f, float g) { _pareq2.setparam (f, g); } + +private: + + + float _fsamp; + bool _ambis; + + Vdelay _vdelay0; + Vdelay _vdelay1; + Diff1 _diff1 [8]; + Filt1 _filt1 [8]; + Delay _delay [8]; + + volatile int _cntA1; + volatile int _cntB1; + volatile int _cntC1; + int _cntA2; + int _cntB2; + int _cntC2; + float _ipdel; + float _xover; + float _rtlow; + float _rtmid; + float _fdamp; + float _opmix; + float _rgxyz; + + float _g0, _d0; + float _g1, _d1; + + Pareq _pareq1; + Pareq _pareq2; + + static float _tdiff1 [8]; + static float _tdelay [8]; +}; + + +// ----------------------------------------------------------------------- + + +#endif |