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annotate projects/d-box/OscillatorBank.h @ 0:8a575ba3ab52

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Initial commit.
author andrewm
date Fri, 31 Oct 2014 19:10:17 +0100
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andrewm@0 1 /*
andrewm@0 2 * OscillatorBank.h
andrewm@0 3 *
andrewm@0 4 * Created on: May 23, 2014
andrewm@0 5 * Author: Victor Zappi and Andrew McPherson
andrewm@0 6 */
andrewm@0 7
andrewm@0 8 #ifndef OSCILLATORBANK_H_
andrewm@0 9 #define OSCILLATORBANK_H_
andrewm@0 10
andrewm@0 11
andrewm@0 12 #include <string>
andrewm@0 13
andrewm@0 14 #include "spear_parser.h"
andrewm@0 15 #include "ADSR.h"
andrewm@0 16 #include "config.h"
andrewm@0 17
andrewm@0 18 using namespace std;
andrewm@0 19
andrewm@0 20 enum OscBankstates {bank_stopped, bank_playing, bank_toreset};
andrewm@0 21
andrewm@0 22 class OscillatorBank
andrewm@0 23 {
andrewm@0 24 public:
andrewm@0 25 OscillatorBank();
andrewm@0 26 OscillatorBank(string filename, int hopsize=-1, int samplerate=44100);
andrewm@0 27 OscillatorBank(char *filename, int hopsize=-1, int samplerate=44100);
andrewm@0 28 ~OscillatorBank();
andrewm@0 29 float *oscillatorPhases;
andrewm@0 30 float *oscillatorNormFrequencies;
andrewm@0 31 float *oscillatorNormFreqDerivatives;
andrewm@0 32 float *oscillatorAmplitudes;
andrewm@0 33 float *oscillatorAmplitudeDerivatives;
andrewm@0 34 float *oscStatNormFrequenciesMean;
andrewm@0 35 float *oscStatNumHops;
andrewm@0 36 OscBankstates state;
andrewm@0 37 bool note;
andrewm@0 38 int actPartNum;
andrewm@0 39 unsigned int *actPart;
andrewm@0 40 int hopCounter;
andrewm@0 41 int lookupTableSize;
andrewm@0 42 float *lookupTable;
andrewm@0 43 float ampTh;
andrewm@0 44 int hopNumTh;
andrewm@0 45 float pitchMultiplier;
andrewm@0 46 float freqMovement;
andrewm@0 47 int filterNum;
andrewm@0 48 float filterFreqs[5];
andrewm@0 49 float filterQ[5];
andrewm@0 50 float filterMaxF;
andrewm@0 51 float filterAmpMinF;
andrewm@0 52 float filterAmpMaxF;
andrewm@0 53 float filterAmpMul;
andrewm@0 54
andrewm@0 55 bool loadFile(string filename, int hopsize=-1, int samplerate=44100);
andrewm@0 56 bool loadFile(char *filename, int hopsize=-1, int samplerate=44100);
andrewm@0 57 bool initBank(int oversamp=1);
andrewm@0 58 void resetOscillators();
andrewm@0 59 int getHopSize() { return hopSize; }
andrewm@0 60 void nextHop();
andrewm@0 61 void setLoopHops(int start, int end);
andrewm@0 62 void play(float vel);
andrewm@0 63 void stop();
andrewm@0 64 void afterTouch(float vel);
andrewm@0 65 int getEnvelopeState();
andrewm@0 66 float getFrequencyScaler();
andrewm@0 67 void setSpeed(float sp);
andrewm@0 68 float getSpeed();
andrewm@0 69 float getMaxSpeed();
andrewm@0 70 float getMinSpeed();
andrewm@0 71 void setJumpHop(int hop);
andrewm@0 72 int getLastHop();
andrewm@0 73 int getCurrentHop() { return currentHop; }
andrewm@0 74
andrewm@0 75 private:
andrewm@0 76
andrewm@0 77 bool loaded;
andrewm@0 78 int numOfPartials;
andrewm@0 79 int numOfOscillators;
andrewm@0 80 int partialsHopSize;
andrewm@0 81 int overSampling;
andrewm@0 82 int hopSize;
andrewm@0 83 int hopSizeReminder;
andrewm@0 84 int oscBankHopSize;
andrewm@0 85 float frequencyScaler;
andrewm@0 86 float nyqNorm;
andrewm@0 87 int lastHop;
andrewm@0 88 int currentHop;
andrewm@0 89 int loopDir;
andrewm@0 90 int loopDirShift;
andrewm@0 91 int loopStartHop;
andrewm@0 92 int loopEndHop;
andrewm@0 93 int *indicesMapping;
andrewm@0 94 float *phaseCopies;
andrewm@0 95 float *oscillatorNextNormFreq;
andrewm@0 96 float *oscillatorNextAmp;
andrewm@0 97 float *nextNormFreqCopies;
andrewm@0 98 float *nextAmpCopies;
andrewm@0 99 float *freqFixedDeltas;
andrewm@0 100 float *ampFixedDeltas;
andrewm@0 101 bool *nyquistCut;
andrewm@0 102 Spear_parser parser;
andrewm@0 103 Partials *partials;
andrewm@0 104 ADSR adsr;
andrewm@0 105 float minAttackTime;
andrewm@0 106 float deltaAttackTime;
andrewm@0 107 float minReleaseTime;
andrewm@0 108 float deltaReleaseTime;
andrewm@0 109 int envState;
andrewm@0 110 int rate;
andrewm@0 111 float speed;
andrewm@0 112 float nextSpeed;
andrewm@0 113 float maxSpeed;
andrewm@0 114 float minSpeed;
andrewm@0 115 int jumpHop;
andrewm@0 116 float adsrVal;
andrewm@0 117 float prevAdsrVal;
andrewm@0 118 float prevAmpTh;
andrewm@0 119 int prevHopNumTh;
andrewm@0 120 float prevPitchMultiplier;
andrewm@0 121 float prevFreqMovement;
andrewm@0 122 int prevFilterNum;
andrewm@0 123 float prevFilterFreqs[5];
andrewm@0 124 float prevFilterQ[5];
andrewm@0 125
andrewm@0 126 bool loader(char *filename, int hopsize=-1, int samplerate=44100);
andrewm@0 127 void addFakeOsc();
andrewm@0 128 void nextOscBankHop();
andrewm@0 129 void nextPartialHop();
andrewm@0 130 int jumpToHop();
andrewm@0 131 void setDirection(int dir);
andrewm@0 132 int nextEnvState();
andrewm@0 133 void checkDirection();
andrewm@0 134 void checkSpeed();
andrewm@0 135 int checkJump();
andrewm@0 136 bool checkOversampling();
andrewm@0 137 void updatePrevControls();
andrewm@0 138 float calculateParDamping(int parIndex, int hopNTh, float adsrVl, float nextFreq,
andrewm@0 139 int filNum, float *filFreq, float *filQ);
andrewm@0 140 };
andrewm@0 141
andrewm@0 142 inline bool OscillatorBank::loadFile(string filename, int hopsize, int samplerate)
andrewm@0 143 {
andrewm@0 144 return loader((char *)filename.c_str(), hopsize, samplerate);
andrewm@0 145 }
andrewm@0 146
andrewm@0 147 inline bool OscillatorBank::loadFile(char *filename, int hopsize, int samplerate)
andrewm@0 148 {
andrewm@0 149 return loader(filename, hopsize, samplerate);
andrewm@0 150 }
andrewm@0 151
andrewm@0 152 inline void OscillatorBank::setLoopHops(int start, int end)
andrewm@0 153 {
andrewm@0 154 if(start > end)
andrewm@0 155 end = start;
andrewm@0 156
andrewm@0 157 if(start<0)
andrewm@0 158 start = 0;
andrewm@0 159 else if(start>lastHop)
andrewm@0 160 start = 0;
andrewm@0 161 if(end < 1)
andrewm@0 162 end = 1;
andrewm@0 163 end = (end<=lastHop) ? end : lastHop;
andrewm@0 164
andrewm@0 165 // set it, take into consideration hop oversampling
andrewm@0 166 loopStartHop = start*overSampling;
andrewm@0 167 loopEndHop = end*overSampling;
andrewm@0 168 }
andrewm@0 169
andrewm@0 170 inline void OscillatorBank::stop()
andrewm@0 171 {
andrewm@0 172 note = false;
andrewm@0 173 adsr.gate(0);
andrewm@0 174 }
andrewm@0 175
andrewm@0 176 inline float OscillatorBank::getFrequencyScaler()
andrewm@0 177 {
andrewm@0 178 return frequencyScaler;
andrewm@0 179 }
andrewm@0 180
andrewm@0 181 inline void OscillatorBank::afterTouch(float vel)
andrewm@0 182 {
andrewm@0 183 hopNumTh = log((1-vel)+1)/log(2)*20000;
andrewm@0 184 if(adsr.getState()==env_attack)
andrewm@0 185 adsr.setAttackRate( (minAttackTime + ( (1-vel)*deltaAttackTime )) * rate );
andrewm@0 186 adsr.setReleaseRate( (minReleaseTime+(1-vel)*deltaReleaseTime)* rate );
andrewm@0 187 }
andrewm@0 188
andrewm@0 189 inline int OscillatorBank::getEnvelopeState()
andrewm@0 190 {
andrewm@0 191 return envState;
andrewm@0 192 }
andrewm@0 193
andrewm@0 194 inline void OscillatorBank::setSpeed(float sp)
andrewm@0 195 {
andrewm@0 196 nextSpeed = sp;
andrewm@0 197 }
andrewm@0 198
andrewm@0 199 inline float OscillatorBank::getSpeed()
andrewm@0 200 {
andrewm@0 201 return speed;
andrewm@0 202 }
andrewm@0 203
andrewm@0 204 inline float OscillatorBank::getMaxSpeed()
andrewm@0 205 {
andrewm@0 206 return maxSpeed;
andrewm@0 207 }
andrewm@0 208
andrewm@0 209 inline float OscillatorBank::getMinSpeed()
andrewm@0 210 {
andrewm@0 211 return minSpeed;
andrewm@0 212 }
andrewm@0 213
andrewm@0 214 inline void OscillatorBank::setJumpHop(int hop)
andrewm@0 215 {
andrewm@0 216 if(hop<0)
andrewm@0 217 return;
andrewm@0 218 hop = (hop<=lastHop) ? hop : lastHop;
andrewm@0 219 jumpHop = hop;
andrewm@0 220 }
andrewm@0 221
andrewm@0 222 inline void OscillatorBank::setDirection(int dir)
andrewm@0 223 {
andrewm@0 224 if(dir>=0)
andrewm@0 225 {
andrewm@0 226 loopDir = 1;
andrewm@0 227 loopDirShift = 0;
andrewm@0 228 }
andrewm@0 229 else
andrewm@0 230 {
andrewm@0 231 loopDir = -1;
andrewm@0 232 loopDirShift = 1;
andrewm@0 233 }
andrewm@0 234 }
andrewm@0 235
andrewm@0 236 inline int OscillatorBank::getLastHop()
andrewm@0 237 {
andrewm@0 238 return lastHop;
andrewm@0 239 }
andrewm@0 240 #endif /* OSCILLATORBANK_H_ */