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#include <MIDI.h>
#include <MozziGuts.h>
#include <Oscil.h>
#include <mozzi_midi.h>
#include <mozzi_fixmath.h>
#include <tables/saw256_int8.h>
#include <tables/sin256_int8.h>
#include <ADSR.h>
#include <LowPassFilter.h>
#define CONTROL_RATE 256
int tableChange =0;
Oscil <SAW256_NUM_CELLS, AUDIO_RATE> nco(SAW256_DATA), nco_det(SAW256_DATA);
Oscil <SIN256_NUM_CELLS, CONTROL_RATE> lfo(SIN256_DATA);
ADSR <CONTROL_RATE> adsr;
int noteOnn = 1;
float lastFreq = 0.0;
int noteOnBuffer[4];
int bufferIndex = 0;
LowPassFilter lpf;
void handleNoteOn(byte channel, byte note, byte velocity){
//If velocity is 0, the noteOn message is equivalent to a noteOff message.
if(velocity == 0){
handleNoteOff(channel,note,velocity);
return;
}
for(int i = 3; i> 0 ; i --){
noteOnBuffer[i] = noteOnBuffer[i-1];
}
noteOnBuffer[0] = note;
jouerNote(note);
}
void jouerNote(byte note){
noteOnn = 1;
lastFreq = mtof(note);
nco.setFreq(lastFreq);
adsr.noteOn();
}
void handleNoteOff(byte channel, byte note, byte velocity){
int i =0;
while(i<3 && noteOnBuffer[i] != note){
i ++;
}
while(i < 3){
noteOnBuffer[i] = noteOnBuffer[i+1];
i+=1;
}
if(i < 4){
noteOnBuffer[3] = -1;
}
if(noteOnBuffer[0] != -1){
jouerNote(noteOnBuffer[0]);
}else{
noteOnn = 0;
adsr.noteOff();
}
}
void setup(){
MIDI.setHandleNoteOn(handleNoteOn);
MIDI.setHandleNoteOff(handleNoteOff);
nco.setFreq(400);
startMozzi(CONTROL_RATE);
MIDI.begin();
lfo.setFreq(1);
for(int i = 0; i<3; i++){
noteOnBuffer[i] = -1;
}
adsr.setADLevels(255,210);
adsr.setTimes(188,345,65000,345);
adsr.setSustainLevel(255);
lpf.setResonance(156);
}
void updateControl(){
int lfoNext = lfo.next();
nco_det.setFreq(lastFreq+(lfoNext*0.02f));
MIDI.read();
adsr.update();
lpf.setCutoffFreq(255*adsr.next()>>8);
}
int updateAudio(){
//adsr.next();
return (int)(adsr.next()*(lpf.next((nco.next()+nco_det.next())>>2)))>>4;
}
void loop(){
audioHook();
}
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