public GeneratorEnvelope(SoundfontBase aSoundfont, byte aVelocity, double aSecondsSustain = 0.0d)
{
soundfont = aSoundfont;
waveform = aSoundfont.waveform;
secondsSustain = aSecondsSustain;
samplePosition = soundfont.soundinfo.offset;
volume = ( float )Math.Pow(10.0d, ( double )aSoundfont.soundinfo.volume / 20.0d) * ( float )aVelocity / 8.0f;
double lCenterFrequency = 440.0d * Math.Pow(2.0d, (( double )aSoundfont.soundinfo.pitchKeyCenter - 69.0d) / 12.0d);
sampleSpeed = waveform.format.sampleRate / lCenterFrequency;
generatorEnvelopeCurrent = GeneratorEnvelopeSet.generatorEnvelopeDelay;
timeElapsedDelay = 0.0d;
timeElapsedAttack = 0.0d;
timeElapsedHold = 0.0d;
timeElapsedDecay = 0.0d;
timeElapsedSustain = 0.0d;
timeElapsedRelease = 0.0d;
timeElapsedEnd = 0.0d;
timeElapsedSum = 0.0d;
aSoundfont.waveform.reader.GetSample(0, 0);
}
public void Generate(double[] aBuffer, double aAddSamples, double aSampleSpeed)
{
generatorEnvelopeCurrent = generatorEnvelopeCurrent.GetNextOscillator(ref this);
if (samplePosition >= waveform.format.samples || samplePosition > soundfont.soundinfo.end)
{
generatorEnvelopeCurrent = GeneratorEnvelopeSet.generatorEnvelopeEnd;
if (soundfont.soundinfo.loopMode == true)
{
Logger.Warning("End");
}
}
generatorEnvelopeCurrent.Generate(aBuffer, aAddSamples, aSampleSpeed, ref this);
aBuffer[0] *= volume;
aBuffer[1] *= volume;
}