1 /* 2 Rakarrack Audio FX 3 4 Dual_Flange.h - Super Flanger 5 Copyright (C) 2010 Ryan Billing 6 Authors: 7 Ryan Billing (a.k.a Transmogrifox) -- Signal Processing 8 Copyright (C) 2010 Ryan Billing 9 10 Nasca Octavian Paul -- Remnants of ZynAddSubFX Echo.h structure and utility routines common to ZynSubFX source 11 Copyright (C) 2002-2005 Nasca Octavian Paul 12 13 Higher intensity flanging accomplished by picking two points out of the delay line to create a wider notch filter. 14 15 This program is free software; you can redistribute it and/or modify 16 it under the terms of version 2 of the GNU General Public License 17 as published by the Free Software Foundation. 18 19 This program is distributed in the hope that it will be useful, 20 but WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 GNU General Public License (version 2) for more details. 23 24 You should have received a copy of the GNU General Public License (version 2) 25 along with this program; if not, write to the Free Software Foundation, 26 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 27 28 */ 29 30 #ifndef DUAL_FLANGE_H 31 #define DUAL_FLANGE_H 32 33 #include "global.h" 34 #include "EffectLFO.h" 35 #include "delayline.h" 36 37 class Dflange 38 { 39 public: 40 Dflange (float * efxoutl_, float * efxoutr_, double sample_rate); 41 ~Dflange (); 42 void out (float * smpsl, float * smpr, uint32_t period); 43 void setpreset (int npreset); 44 void changepar (int npar, int value); 45 int getpar (int npar); 46 void cleanup (); 47 48 int Ppreset; 49 50 float *efxoutl; 51 float *efxoutr; 52 53 uint32_t PERIOD; 54 55 private: 56 //Parameters 57 int Pwetdry; // 0 //Wet/Dry mix. Range -64 to 64 58 int Ppanning; // 1 //Panning. Range -64 to 64 59 int Plrcross; // 2 //L/R Mixing. Range 0 to 127 60 int Pdepth; // 3 //Max delay deviation expressed as frequency of lowest frequency notch. Min = 20, Max = 4000 61 int Pwidth; // 4 //LFO amplitude. Range 0 to 16000 (Hz) 62 int Poffset; // 5 //Offset of notch 1 to notch 2. Range 0 to 100 (percent) 63 int Pfb; // 6 //Feedback parameter. Range -64 to 64 64 int Phidamp; // 7 //Lowpass filter delay line. Range 20 to 20000 (Hz) 65 int Psubtract; // 8 //Subtract wet/dry instead of add. Nonzero is true 66 int Pzero; // 9 //Enable through-zero flanging, Nonzero is true 67 // 10 //LFO Speed 68 // 11 //LFO stereo diff 69 // 12 //LFO type 70 // 13 //LFO Randomness 71 int Pintense; // 14 //Intense Mode 72 73 float wet, dry; //Wet/Dry mix. 74 float lpan, rpan; //Panning. 75 float flrcross, frlcross; // L/R Mixing. 76 float fdepth; //Max delay deviation expressed as frequency of lowest frequency notch. Min = 20, Max = 15000 77 float fwidth; //LFO amplitude. 78 float foffset; // Offset of notch 1 to notch 2. Range 0 to 1.0 79 float ffb; //Feedback parameter. Range -0.99 to 0.99 80 float fhidamp; //Lowpass filter delay line. Range 20 to 20000 (Hz) 81 float fsubtract; //Subtract wet/dry instead of add. Nonzero is true 82 float fzero; //Enable through-zero flanging 83 float logmax; 84 EffectLFO *lfo; //lfo Flanger 85 86 //Internally used variables 87 int maxx_delay; 88 int kl, kr, zl, zr; 89 int zcenter; 90 91 float l, r, ldl, rdl, zdr, zdl; 92 float rflange0, rflange1, lflange0, lflange1, oldrflange0, oldrflange1, oldlflange0, oldlflange1; 93 float period_const, base, ibase; 94 float *ldelay, *rdelay, *zldelay, *zrdelay; 95 float oldl, oldr; //pt. lpf 96 float rsA, rsB, lsA, lsB; //Audio sample at given delay 97 98 delayline *ldelayline0, *rdelayline0, *ldelayline1, *rdelayline1; 99 class FPreset *Fpre; 100 101 float fSAMPLE_RATE; 102 103 104 }; 105 106 107 #endif 108