public byte[] GenerateTone(Envelope envelope, Sweep sweep)
{
double timeResolution = 1.0 / 128.0;
int timeSteps = 0;
byte[] result = new byte[LengthInSamples(2f)];
byte[] outBuffer;
double frequency = CalcFreq(sweep.Frequency);
int resultIndex = 0;
while (true)
{
outBuffer = GenerateTone(frequency, timeResolution, AMPLITUDE_STEPS * envelope.InitialVolume);
timeSteps++;
if (envelope.Sweep > 0 && timeSteps % (envelope.Sweep * 2) == 0)
{
if (envelope.Increasing)
{
envelope.InitialVolume++;
}
else
{
envelope.InitialVolume--;
}
}
if (sweep.SweepEnable() && timeSteps % sweep.SweepTime == 0)
{
sweep.SweepSet();
frequency = CalcFreq(sweep.Frequency);
}
if (resultIndex + outBuffer.Length > result.Length)
{
Array.Copy(outBuffer, 0, result, resultIndex, result.Length - resultIndex);
return(result); //array is full, return it.
}
Array.Copy(outBuffer, 0, result, resultIndex, outBuffer.Length);
resultIndex += outBuffer.Length;
if ((envelope.Increasing && envelope.InitialVolume == 0xf) || (!envelope.Increasing && envelope.InitialVolume == 0x00) || sweep.Frequency > 2047)
{
return(result);
}
}
}