1 // Copyright 2014 Emilie Gillet. 2 // 3 // Author: Emilie Gillet (emilie.o.gillet@gmail.com) 4 // 5 // Permission is hereby granted, free of charge, to any person obtaining a copy 6 // of this software and associated documentation files (the "Software"), to deal 7 // in the Software without restriction, including without limitation the rights 8 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 // copies of the Software, and to permit persons to whom the Software is 10 // furnished to do so, subject to the following conditions: 11 // 12 // The above copyright notice and this permission notice shall be included in 13 // all copies or substantial portions of the Software. 14 // 15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 21 // THE SOFTWARE. 22 // 23 // See http://creativecommons.org/licenses/MIT/ for more information. 24 // 25 // ----------------------------------------------------------------------------- 26 // 27 // Modal synthesis voice. 28 29 #ifndef ELEMENTS_DSP_VOICE_H_ 30 #define ELEMENTS_DSP_VOICE_H_ 31 32 #include "stmlib/stmlib.h" 33 34 #include "stmlib/dsp/filter.h" 35 36 #include "elements/dsp/dsp.h" 37 #include "elements/dsp/exciter.h" 38 #include "elements/dsp/multistage_envelope.h" 39 #include "elements/dsp/patch.h" 40 #include "elements/dsp/resonator.h" 41 #include "elements/dsp/string.h" 42 #include "elements/dsp/tube.h" 43 44 #include "elements/dsp/fx/diffuser.h" 45 46 namespace elements { 47 48 const size_t kNumStrings = 5; 49 50 enum ResonatorModel { 51 RESONATOR_MODEL_MODAL, 52 RESONATOR_MODEL_STRING, 53 RESONATOR_MODEL_STRINGS, 54 }; 55 56 class Voice { 57 public: Voice()58 Voice() { } ~Voice()59 ~Voice() { } 60 61 void Init(); 62 void Process( 63 const Patch& patch, 64 float frequency, 65 float strength, 66 const bool gate_in, 67 const float* blow_in, 68 const float* strike_in, 69 float* raw, 70 float* center, 71 float* sides, 72 size_t size); 73 // For metering. exciter_level()74 inline float exciter_level() const { return exciter_level_; } Panic()75 void Panic() { 76 ResetResonator(); 77 } set_resonator_model(ResonatorModel resonator_model)78 void set_resonator_model(ResonatorModel resonator_model) { 79 resonator_model_ = resonator_model; 80 } 81 82 private: 83 void ResetResonator(); GetGateFlags(bool gate_in)84 inline uint8_t GetGateFlags(bool gate_in) { 85 uint8_t flags = 0; 86 if (gate_in) { 87 if (!previous_gate_) { 88 flags |= EXCITER_FLAG_RISING_EDGE; 89 } 90 flags |= EXCITER_FLAG_GATE; 91 } else if (previous_gate_) { 92 flags = EXCITER_FLAG_FALLING_EDGE; 93 } 94 previous_gate_ = gate_in; 95 return flags; 96 } 97 98 MultistageEnvelope envelope_; 99 Tube tube_; 100 Exciter bow_; 101 Exciter blow_; 102 Exciter strike_; 103 Diffuser diffuser_; 104 Resonator resonator_; 105 String string_[kNumStrings]; 106 stmlib::DCBlocker dc_blocker_; 107 108 float strength_; 109 float envelope_value_; 110 111 float exciter_level_; 112 113 float bow_buffer_[kMaxBlockSize]; 114 float bow_strength_buffer_[kMaxBlockSize]; 115 float blow_buffer_[kMaxBlockSize]; 116 float strike_buffer_[kMaxBlockSize]; 117 float external_buffer_[kMaxBlockSize]; 118 119 float diffuser_buffer_[1024]; 120 121 bool previous_gate_; 122 123 ResonatorModel resonator_model_; 124 float chord_index_; 125 126 DISALLOW_COPY_AND_ASSIGN(Voice); 127 }; 128 129 } // namespace elements 130 131 #endif // ELEMENTS_DSP_VOICE_H_ 132