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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>
#include "pitchbendArray.h"
#define CONTROL_RATE 256
int tableChange = 0;
Oscil <SAW256_NUM_CELLS, AUDIO_RATE> ncoOne(SAW256_DATA),
ncoTwo(SAW256_DATA), ncoThree(SAW256_DATA);
Oscil <SIN256_NUM_CELLS, CONTROL_RATE> lfo(SIN256_DATA);
ADSR <CONTROL_RATE> adsr;
int noteOnn = 1;
float lastFreq = 0;
int noteOnBuffer[4];
int bufferIndex = 0;
float pbAmount = 0.0;
float lastMidiNote = 0.0;
LowPassFilter lpf;
void handlePitchBend(byte channel, byte lsb, byte msb) {
pbAmount = pgm_read_float_near(PB_ARRAY+msb);
jouerNote(lastMidiNote);
}
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((float)note);
}
void jouerNote(float note) {
float totalNote = note + pbAmount;
lastFreq = Q16n16_to_float(Q16n16_mtof(float_to_Q16n16(totalNote)));
ncoOne.setFreq(lastFreq);
lastMidiNote = note;
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((float)noteOnBuffer[0]);
} else {
noteOnn = 0;
adsr.noteOff();
}
}
void setup() {
MIDI.setHandleNoteOn(handleNoteOn);
MIDI.setHandleNoteOff(handleNoteOff);
MIDI.setHandlePitchBend(handlePitchBend);
ncoOne.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);
}
int lfoNext = 0;
void updateControl() {
lfoNext = lfo.next();
ncoTwo.setFreq(lastFreq + (lfoNext * 0.02f));
//version tarrée à virgule fixe.
//ncoThree.setFreq((float)(((Q15n0_to_Q15n16((mozziAnalogRead(5)-512))*(float_to_Q15n16(0.004))>>23)*float_to_Q15n16(lastFreq))>>23));
MIDI.read();
adsr.update();
lpf.setCutoffFreq(255 * adsr.next() >> 8);
}
int updateAudio() {
//adsr.next();
return (int) (adsr.next()*(lpf.next((ncoOne.next() + ncoTwo.next() + ncoThree.next()) >> 2))) >> 2;
}
void loop() {
audioHook();
}
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