ModFilter.h (2244B)
1 /* 2 ZynAddSubFX - a software synthesizer 3 4 ModFilter.h - Modulated Filter 5 Copyright (C) 2016 Mark McCurry 6 7 This program is free software; you can redistribute it and/or 8 modify it under the terms of the GNU General Public License 9 as published by the Free Software Foundation; either version 2 10 of the License, or (at your option) any later version. 11 */ 12 #pragma once 13 #include "../globals.h" 14 #include "../Misc/Time.h" 15 16 namespace zyn { 17 18 //Modulated instance of one of the filters in src/DSP/ 19 //Supports stereo modes 20 class ModFilter 21 { 22 public: 23 ModFilter(const FilterParams &pars, 24 const SYNTH_T &synth, 25 const AbsTime &time, 26 Allocator &alloc, 27 bool stereo, 28 float notefreq_); 29 ~ModFilter(void); 30 31 void addMod(LFO &lfo); 32 void addMod(Envelope &env); 33 34 //normal per tick update 35 void update(float relfreq, float relq); 36 37 //updates typically seen in note-init 38 void updateNoteFreq(float noteFreq_); 39 void updateSense(float velocity, 40 uint8_t scale, uint8_t func); 41 42 //filter stereo/mono signal(s) in-place 43 void filter(float *l, float *r); 44 private: 45 void paramUpdate(Filter *&f); 46 void svParamUpdate(SVFilter &sv); 47 void anParamUpdate(AnalogFilter &an); 48 void mgParamUpdate(MoogFilter &mg); 49 void cbParamUpdate(CombFilter &cb); 50 51 52 const FilterParams &pars; //Parameters to Pull Updates From 53 const SYNTH_T &synth; //Synthesizer Buffer Parameters 54 const AbsTime &time; //Time for RT Updates 55 Allocator &alloc; //RT Memory Pool 56 57 58 smooth_float baseQ; //filter sharpness 59 smooth_float baseFreq; //base filter frequency 60 float noteFreq; //frequency note was initialized to 61 smooth_float tracking; //shift due to note frequency 62 smooth_float sense; //shift due to note velocity 63 64 65 Filter *left; //left channel filter 66 Filter *right;//right channel filter 67 Envelope *env; //center freq envelope 68 LFO *lfo; //center freq lfo 69 }; 70 71 }