boolean Osc::charEv( char code )
{
switch ( code )
{
#ifdef INTERN_CONSOLE
case 'd': // set detuning amount
console.getSByte( CONSTR("detune"), &this->detune );
setDetune( detune );
break;
case 'f': // input an ideal frequency
{
double newFreq;
if ( console.getDouble( CONSTR("freq"), &newFreq ) )
setFreq( newFreq );
break;
}
#endif
#ifdef CONSOLE_OUTPUT
case chrInfo: // display object info to console
super::charEv( code );
case chrInLnfo: // display object info inline to console
console.infoDouble( CONSTR("freq"), realFreq() );
console.infoInt( CONSTR("detune"), detune );
break;
#endif
case '!': // perform a reset
super::charEv('!');
setDetune(0);
extFactor = 1.0;
break;
default:
return super::charEv( code );
}
return true;
}
void Oscillator::reset() {
parameters.amp = 0.5f;
parameters.wave = OSC_SAWTOOTH;
counter = 0.0f;
sqp = 1.0f;
sqc = 0;
parameters.pulsewidth = 0.0f;
parameters.detune = 0;
setAmp(1.0f);
setWave(OSC_SAWTOOTH);
setPulseWidth(0.0f);
setNote(12);
setDetune(0);
}
Oscillator::Oscillator() : AudioNode() {
FrequencyIn = new AudioNodeInput();
FMSourceIn = new AudioNodeInput();
FMAmountIn = new AudioNodeInput();
_period = 0;
_phase = 0;
_osc = 0;
_accumulator = 0;
_sample = 0;
setFrequency(110.0f);
setDetune(0.0f);
setBend(0.0f);
setPortamento(1);
setSemitone(0);
setGain(1.0f);
// this extends the standard midi frequencies from 128 to 256 discrete values,
// extending the frequency range with -117 positions below to 0.00949 Hz
// and +11 above to 23679 Hz.
for (int i=0; i<=128; i++) {
_expFrequency[i] = (int64_t(pow(2,((float(i) - 69.0) / 12.0)) * 440.0) << 32) / SAMPLE_RATE; // divide by sample rate?
// Serial.print("_expFrequency[");
// Serial.print(i);
// Serial.print("] = ");
// Serial.println(int(_expFrequency[i] >> 32));
}
for (int i=0; i<=128; i++) {
_lfoFrequency[i] = (int64_t(pow(2,((double(i) - 117.0 - 69.0) / 12.0)) * 440.0) << 32) / SAMPLE_RATE; // divide by sample rate?
}
_dir = 1;
_indx = 0;
_ifrac = 0;
_freq0 = 0;
_freq1 = 0;
_dfreq = 0;
_ffrac = 0;
_dPhase = 0;
_lfo = false;
}
void Detune_set(void* ctx, float val)
{
SetHelp("Unison Level");
setDetune(val);
}
Oscillator::Oscillator(void)
{
m_tempo = 120.0f;
m_sync = true;
m_waveform = k_sine;
m_startphase = 0.0;
m_phase=m_startphase;
m_pitch = 0.0f;
m_detune = 0.0f;
m_semi = 0.0f;
m_pw = 0.0f;
m_pwm = 0.0f;
m_pw_mod = 0.0f;
m_pitch_mod = 0.0f;
//noise generation
m_gaussian_noise_constant_a = 0x67452301;
m_gaussian_noise_constant_c = static_cast<int>(0xefcdab89);
m_sampleandhold_period=1;
m_sampleandhold_counter=0;
m_sample = 0.0f;
m_fintmax = static_cast<float>(std::numeric_limits<int>::max());
isActive=false;
setOscMode(k_oscmode_oscillator);
setDetune(0.5f);
setSemi(0.5f);
setVolume(1.0f);
setPW(0.5f);
setPWM(0.0f);
setPitch(440.0f);
/* populate bpm denominators
4 full notes = BPM / 960 => speed 0
Dotted 2 full notes = BPM / 720
Triplets for 4 full notes = BPM / 640
2 full notes = BPM / 480
Dotted full note = BPM / 360
Triplets for 2 full notes = BPM / 320
Full note = BPM / 240
Dotted-half note = BPM / 180
Triplet-full note = BPM / 160
Half note = BPM / 120
Dotted-quarter note = BPM / 90
Triplet-half note = BPM / 80
Quarter note = BPM / 60
Dotted-eighth note = BPM / 45
Triplet-quarter note = BPM / 40
Eighth note = BPM / 30
Dotted-sixteenth note = BPM / 22.5
Triplet-eighth note = BPM / 20
Sixteenth note = BPM / 15
Dotted-32th note = BPM / 11.25
Triplet-sixteenth note = BPM / 10
32th note = BPM / 7.5
Dotted-64th note = BPM / 5.5125
Triplet-32th note = BPM / 5
64th note = BPM / 3.75
Dotted-128th note = BPM / 2.75625
Triplet-64th note = BPM / 2.5
128th note = BPM / 1.875
Triplet-128th note = BPM / 1.25 => speed g_num_bpm_synced_lfo_speeds-1
*/
//TODO: less hardcoding
m_bpm_denominators[0]=960.0f;
m_bpm_denominators[1]=720.0f;
m_bpm_denominators[2]=640.0f;
m_bpm_denominators[3]=480.0f;
m_bpm_denominators[4]=360.0f;
m_bpm_denominators[5]=320.0f;
m_bpm_denominators[6]=240.0f;
m_bpm_denominators[7]=180.0f;
m_bpm_denominators[8]=160.0f;
m_bpm_denominators[9]=120.0f;
m_bpm_denominators[10]=90.0f;
m_bpm_denominators[11]=80.0f;
m_bpm_denominators[12]=60.0f;
m_bpm_denominators[13]=45.0f;
m_bpm_denominators[14]=40.0f;
m_bpm_denominators[15]=30.0f;
m_bpm_denominators[16]=22.5f;
m_bpm_denominators[17]=20.0f;
m_bpm_denominators[18]=15.0f;
m_bpm_denominators[19]=11.25f;
m_bpm_denominators[20]=10.0f;
m_bpm_denominators[21]=7.5f;
m_bpm_denominators[22]=5.5125f;
m_bpm_denominators[23]=5.0f;
m_bpm_denominators[24]=3.750f;
m_bpm_denominators[25]=2.75625f;
m_bpm_denominators[26]=2.5f;
m_bpm_denominators[27]=1.875f;
m_bpm_denominators[28]=1.25f;
}
