public override void Process(VoiceParameters voiceparams, int startIndex, int endIndex)
{
//--Base pitch calculation
var basePitchFrequency = SynthHelper.CentsToPitch(voiceparams.SynthParams.CurrentPitch)*gen.Frequency;
var pitchWithBend = basePitchFrequency*SynthHelper.CentsToPitch(voiceparams.PitchOffset);
var basePitch = pitchWithBend / voiceparams.SynthParams.Synth.SampleRate;
float baseVolume = voiceparams.SynthParams.Synth.MasterVolume * voiceparams.SynthParams.CurrentVolume * voiceparams.SynthParams.Synth.MixGain;
//--Main Loop
for (int x = startIndex; x < endIndex; x += SynthConstants.DefaultBlockSize * voiceparams.SynthParams.Synth.AudioChannels)
{
voiceparams.Envelopes[0].Increment(SynthConstants.DefaultBlockSize);
voiceparams.Envelopes[1].Increment(SynthConstants.DefaultBlockSize);
voiceparams.Lfos[0].Increment(SynthConstants.DefaultBlockSize);
voiceparams.Lfos[1].Increment(SynthConstants.DefaultBlockSize);
//--Calculate pitch and get next block of samples
gen.GetValues(voiceparams.GeneratorParams[0], voiceparams.BlockBuffer, basePitch *
SynthHelper.CentsToPitch((int)(voiceparams.Envelopes[0].Value * modEnvToPitch +
voiceparams.Lfos[0].Value * modLfoToPitch + voiceparams.Lfos[1].Value * vibLfoToPitch)));
//--Filter
if (voiceparams.Filters[0].Enabled)
{
double centsFc = voiceparams.PData[0].Int1 + voiceparams.Lfos[0].Value * modLfoToFilterFc + voiceparams.Envelopes[0].Value * modEnvToFilterFc;
if (centsFc > 13500)
centsFc = 13500;
voiceparams.Filters[0].CutOff = SynthHelper.KeyToFrequency(centsFc / 100.0, 69);
if (voiceparams.Filters[0].CoeffNeedsUpdating)
voiceparams.Filters[0].ApplyFilterInterp(voiceparams.BlockBuffer, voiceparams.SynthParams.Synth.SampleRate);
else
voiceparams.Filters[0].ApplyFilter(voiceparams.BlockBuffer);
}
//--Volume calculation
float volume = (float)SynthHelper.DBtoLinear(voiceparams.VolOffset + voiceparams.Envelopes[1].Value + voiceparams.Lfos[0].Value * modLfoToVolume) * baseVolume;
//--Mix block based on number of channels
if (voiceparams.SynthParams.Synth.AudioChannels == 2)
voiceparams.MixMonoToStereoInterp(x,
volume * pan.Left * voiceparams.SynthParams.CurrentPan.Left,
volume * pan.Right * voiceparams.SynthParams.CurrentPan.Right);
else
voiceparams.MixMonoToMonoInterp(x, volume);
//--Check and end early if necessary
if ((voiceparams.Envelopes[1].CurrentStage > EnvelopeState.Hold && volume <= SynthConstants.NonAudible) || voiceparams.GeneratorParams[0].CurrentState == GeneratorState.Finished)
{
voiceparams.State = VoiceStateEnum.Stopped;
return;
}
}
}
