public BfxrGenerator(BfxrParameters p)
{
this.rand = new Random();
this.state.period = 100.0 / (p.StartFrequency * p.StartFrequency + 0.001);
this.state.maxPeriod = 100.0 / (p.MinFrequency * p.MinFrequency + 0.001);
this.state.slide = 1.0 - 0.01 * p.Slide * p.Slide * p.Slide;
this.state.deltaSlide = -0.000001 * p.DeltaSlide * p.DeltaSlide * p.DeltaSlide;
this.state.squareDuty = 0;
this.state.dutySweep = 0;
if (p.Wave == BfxrWave.Square)
{
this.state.squareDuty = 0.5 - 0.5 * p.SquareDuty;
this.state.dutySweep = -0.00005 * p.DutySweep;
}
this.state.changePeriod = (int)((1.1 - p.ChangeRepeat) * (20000 / 1.1) + 32);
this.state.changePeriodTime = 0;
this.state.changeAmount = p.ChangeAmount > 0
? 1.0 - 0.9 * p.ChangeAmount * p.ChangeAmount
: 1.0 + 10.0 * p.ChangeAmount * p.ChangeAmount;
this.state.changeAmount2 = p.ChangeAmount2 > 0
? 1.0 - 0.9 * p.ChangeAmount2 * p.ChangeAmount2
: 1.0 + 10.0 * p.ChangeAmount2 * p.ChangeAmount2;
this.state.changeTime = 0;
this.state.changeTime2 = 0;
this.state.changeLimit = p.ChangeSpeed == 1.0
? 0
: (int)(((1.0 - p.ChangeSpeed) * (1.0 - p.ChangeSpeed) * 20000 + 32) *
(1.0 - p.ChangeRepeat + 0.1) / 1.1);
this.state.changeLimit2 = p.ChangeSpeed2 == 1.0
? 0
: (int)(((1.0 - p.ChangeSpeed2) * (1.0 - p.ChangeSpeed2) * 20000 + 32) *
(1.0 - p.ChangeRepeat + 0.1) / 1.1);
this.initState = this.state;
this.pinkGenerator = new PinkGenerator(this.rand);
this.masterVolume = p.MasterVolume * p.MasterVolume;
this.wave = p.Wave;
double attackTime = Math.Max(0, p.AttackTime);
double sustainTime = Math.Max(0.01, p.SustainTime);
double decayTime = Math.Max(0, p.DecayTime);
double totalTime = attackTime + sustainTime + decayTime;
if (totalTime < MinLength)
{
double fac = MinLength / totalTime;
attackTime *= fac;
sustainTime *= fac;
decayTime *= fac;
}
this.sustainPunch = p.SustainPunch;
this.phase = 0;
this.minFrequency = p.MinFrequency;
this.muted = false;
this.overtones = (int)(p.Overtones * 10);
this.overtoneFalloff = p.OvertoneFalloff;
this.bitcrushFreq = 1 - Math.Pow(p.BitCrush, 1.0 / 3.0);
this.bitcrushFreqSweep = -0.000015 * p.BitCrushSweep;
this.bitcrushPhase = 0;
this.bitcrushLast = 0;
this.compressionFactor = 1 / (1 + 4 * p.CompressionAmount);
this.filters = p.LPFilterCutoff != 1.0 || p.HPFilterCutoff != 0.0;
this.lpFilterOn = p.LPFilterCutoff != 1.0;
this.lpFilterPos = 0.0;
this.lpFilterDeltaPos = 0.0;
this.lpFilterCutoff = 0.1 * p.LPFilterCutoff * p.LPFilterCutoff * p.LPFilterCutoff;
this.lpFilterDeltaCutoff = 1.0 + 0.0001 * p.LPFilterCutoffSweep;
this.lpFilterDamping = 1.0 - 5.0 / (1.0 + 20 * p.LPFilterResonance * p.LPFilterResonance) * (0.01 + this.lpFilterCutoff);
this.hpFilterPos = 0.0;
this.hpFilterCutoff = 0.1 * p.HPFilterCutoff * p.HPFilterCutoff;
this.hpFilterDeltaCutoff = 1.0 + 0.0003 * p.HPFilterCutoffSweep;
this.vibratoPhase = 0;
this.vibratoSpeed = 0.01 * p.VibratoSpeed * p.VibratoSpeed;
this.vibratoAmplitude = 0.5 * p.VibratoDepth;
this.envelopeVolume = 0;
this.envelopeStage = 0;
this.envelopeTime = 0;
this.envelopeLength0 = (int)(100000 * attackTime * attackTime);
this.envelopeLength1 = (int)(100000 * sustainTime * sustainTime);
this.envelopeLength2 = (int)(100000 * decayTime * decayTime + 10);
this.envelopeLength = this.envelopeLength0;
this.envelopeFullLength = this.envelopeLength0 + this.envelopeLength1 + this.envelopeLength2;
this.envelopeInvLength0 = 1.0 / this.envelopeLength0;
this.envelopeInvLength1 = 1.0 / this.envelopeLength1;
this.envelopeInvLength2 = 1.0 / this.envelopeLength2;
this.flanger = p.FlangerOffset != 0.0 || p.FlangerSweep != 0.0;
this.flangerOffset = 1020.0 * p.FlangerOffset * p.FlangerOffset * (p.FlangerOffset > 0 ? 1 : -1);
this.flangerDeltaOffset = 0.2 * p.FlangerSweep * p.FlangerSweep * p.FlangerSweep;
this.flangerPos = 0;
this.flangerBuffer = new float[1024];
this.noiseBuffer = new float[32];
this.pinkNoiseBuffer = new float[32];
this.loResNoiseBuffer = new float[32];
for (int i = 0; i < this.noiseBuffer.Length; i++)
{
this.noiseBuffer[i] = 2.0f * (float)this.rand.NextDouble() - 1.0f;
}
for (int i = 0; i < this.pinkNoiseBuffer.Length; i++)
{
this.pinkNoiseBuffer[i] = this.pinkGenerator.Next();
}
float val = 0.0f;
for (int i = 0; i < this.loResNoiseBuffer.Length; i++)
{
if ((i % LoResNoisePeriod) == 0)
{
val = 2.0f * (float)this.rand.NextDouble() - 1.0f;
}
this.loResNoiseBuffer[i] = val;
}
this.repeatTime = 0;
this.repeatLimit = p.RepeatSpeed == 0.0
? 0
: (int)((1.0 - p.RepeatSpeed) * (1.0 - p.RepeatSpeed) * 20000) + 32;
}
public BfxrGenerator(BfxrParameters p)
{
this.rand = new Random();
this.state.period = 100.0 / (p.StartFrequency * p.StartFrequency + 0.001);
this.state.maxPeriod = 100.0 / (p.MinFrequency * p.MinFrequency + 0.001);
this.state.slide = 1.0 - 0.01 * p.Slide * p.Slide * p.Slide;
this.state.deltaSlide = -0.000001 * p.DeltaSlide * p.DeltaSlide * p.DeltaSlide;
this.state.squareDuty = 0;
this.state.dutySweep = 0;
if (p.Wave == BfxrWave.Square)
{
this.state.squareDuty = 0.5 - 0.5 * p.SquareDuty;
this.state.dutySweep = -0.00005 * p.DutySweep;
}
this.state.changePeriod = (int)((1.1 - p.ChangeRepeat) * (20000 / 1.1) + 32);
this.state.changePeriodTime = 0;
this.state.changeAmount = p.ChangeAmount > 0
? 1.0 - 0.9 * p.ChangeAmount * p.ChangeAmount
: 1.0 + 10.0 * p.ChangeAmount * p.ChangeAmount;
this.state.changeAmount2 = p.ChangeAmount2 > 0
? 1.0 - 0.9 * p.ChangeAmount2 * p.ChangeAmount2
: 1.0 + 10.0 * p.ChangeAmount2 * p.ChangeAmount2;
this.state.changeTime = 0;
this.state.changeTime2 = 0;
this.state.changeLimit = p.ChangeSpeed == 1.0
? 0
: (int)(((1.0 - p.ChangeSpeed) * (1.0 - p.ChangeSpeed) * 20000 + 32) *
(1.0 - p.ChangeRepeat + 0.1) / 1.1);
this.state.changeLimit2 = p.ChangeSpeed2 == 1.0
? 0
: (int)(((1.0 - p.ChangeSpeed2) * (1.0 - p.ChangeSpeed2) * 20000 + 32) *
(1.0 - p.ChangeRepeat + 0.1) / 1.1);
this.initState = this.state;
this.pinkGenerator = new PinkGenerator(this.rand);
this.masterVolume = p.MasterVolume * p.MasterVolume;
this.wave = p.Wave;
double attackTime = Math.Max(0, p.AttackTime);
double sustainTime = Math.Max(0.01, p.SustainTime);
double decayTime = Math.Max(0, p.DecayTime);
double totalTime = attackTime + sustainTime + decayTime;
if (totalTime < MinLength)
{
double fac = MinLength / totalTime;
attackTime *= fac;
sustainTime *= fac;
decayTime *= fac;
}
this.sustainPunch = p.SustainPunch;
this.phase = 0;
this.minFrequency = p.MinFrequency;
this.muted = false;
this.overtones = (int)(p.Overtones * 10);
this.overtoneFalloff = p.OvertoneFalloff;
this.bitcrushFreq = 1 - Math.Pow(p.BitCrush, 1.0 / 3.0);
this.bitcrushFreqSweep = -0.000015 * p.BitCrushSweep;
this.bitcrushPhase = 0;
this.bitcrushLast = 0;
this.compressionFactor = 1 / (1 + 4 * p.CompressionAmount);
this.filters = p.LPFilterCutoff != 1.0 || p.HPFilterCutoff != 0.0;
this.lpFilterOn = p.LPFilterCutoff != 1.0;
this.lpFilterPos = 0.0;
this.lpFilterDeltaPos = 0.0;
this.lpFilterCutoff = 0.1 * p.LPFilterCutoff * p.LPFilterCutoff * p.LPFilterCutoff;
this.lpFilterDeltaCutoff = 1.0 + 0.0001 * p.LPFilterCutoffSweep;
this.lpFilterDamping = 1.0 - 5.0 / (1.0 + 20 * p.LPFilterResonance * p.LPFilterResonance) * (0.01 + this.lpFilterCutoff);
this.hpFilterPos = 0.0;
this.hpFilterCutoff = 0.1 * p.HPFilterCutoff * p.HPFilterCutoff;
this.hpFilterDeltaCutoff = 1.0 + 0.0003 * p.HPFilterCutoffSweep;
this.vibratoPhase = 0;
this.vibratoSpeed = 0.01 * p.VibratoSpeed * p.VibratoSpeed;
this.vibratoAmplitude = 0.5 * p.VibratoDepth;
this.envelopeVolume = 0;
this.envelopeStage = 0;
this.envelopeTime = 0;
this.envelopeLength0 = (int)(100000 * attackTime * attackTime);
this.envelopeLength1 = (int)(100000 * sustainTime * sustainTime);
this.envelopeLength2 = (int)(100000 * decayTime * decayTime + 10);
this.envelopeLength = this.envelopeLength0;
this.envelopeFullLength = this.envelopeLength0 + this.envelopeLength1 + this.envelopeLength2;
this.envelopeInvLength0 = 1.0 / this.envelopeLength0;
this.envelopeInvLength1 = 1.0 / this.envelopeLength1;
this.envelopeInvLength2 = 1.0 / this.envelopeLength2;
this.flanger = p.FlangerOffset != 0.0 || p.FlangerSweep != 0.0;
this.flangerOffset = 1020.0 * p.FlangerOffset * p.FlangerOffset * (p.FlangerOffset > 0 ? 1 : -1);
this.flangerDeltaOffset = 0.2 * p.FlangerSweep * p.FlangerSweep * p.FlangerSweep;
this.flangerPos = 0;
this.flangerBuffer = new float[1024];
this.noiseBuffer = new float[32];
this.pinkNoiseBuffer = new float[32];
this.loResNoiseBuffer = new float[32];
for (int i = 0; i < this.noiseBuffer.Length; i++)
{
this.noiseBuffer[i] = 2.0f * (float)this.rand.NextDouble() - 1.0f;
}
for (int i = 0; i < this.pinkNoiseBuffer.Length; i++)
{
this.pinkNoiseBuffer[i] = this.pinkGenerator.Next();
}
float val = 0.0f;
for (int i = 0; i < this.loResNoiseBuffer.Length; i++)
{
if ((i % LoResNoisePeriod) == 0)
{
val = 2.0f * (float)this.rand.NextDouble() - 1.0f;
}
this.loResNoiseBuffer[i] = val;
}
this.repeatTime = 0;
this.repeatLimit = p.RepeatSpeed == 0.0
? 0
: (int)((1.0 - p.RepeatSpeed) * (1.0 - p.RepeatSpeed) * 20000) + 32;
}
