public void QuickSetupSf2(int sampleRate, int note, short keyNumToHold, short keyNumToDecay, bool isVolumeEnvelope, EnvelopeDescriptor envelopeInfo)
{
Depth = envelopeInfo.Depth;
// Delay
_stages[0].Offset = 0;
_stages[0].Scale = 0;
_stages[0].Time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DelayTime)));
// Attack
_stages[1].Offset = envelopeInfo.StartLevel;
_stages[1].Scale = envelopeInfo.PeakLevel - envelopeInfo.StartLevel;
_stages[1].Time = Math.Max(0, (int)(sampleRate * (envelopeInfo.AttackTime)));
_stages[1].Graph = Tables.EnvelopeTables(envelopeInfo.AttackGraph);
// Hold
_stages[2].Offset = 0;
_stages[2].Scale = envelopeInfo.PeakLevel;
_stages[2].Time = (int) Math.Max(0, sampleRate * (envelopeInfo.HoldTime) * Math.Pow(2, ((60 - note) * keyNumToHold) / 1200.0));
// Decay
_stages[3].Offset = envelopeInfo.SustainLevel;
_stages[3].Scale = envelopeInfo.PeakLevel - envelopeInfo.SustainLevel;
if (envelopeInfo.SustainLevel == envelopeInfo.PeakLevel)
_stages[3].Time = 0;
else
_stages[3].Time = Math.Max(0, (int)(sampleRate * (envelopeInfo.DecayTime) * Math.Pow(2, ((60 - note) * keyNumToDecay) / 1200.0)));
_stages[3].Graph = Tables.EnvelopeTables(envelopeInfo.DecayGraph);
// Sustain
_stages[4].Offset = 0;
_stages[4].Scale = envelopeInfo.SustainLevel;
_stages[4].Time = (int) (sampleRate * envelopeInfo.SustainTime);
// Release
_stages[5].Scale = _stages[3].Time == 0 && _stages[4].Time == 0 ? envelopeInfo.PeakLevel : _stages[4].Scale;
if (isVolumeEnvelope)
{
_stages[5].Offset = -100;
_stages[5].Scale += 100;
_stages[6].Scale = -100;
}
else
{
_stages[5].Offset = 0;
_stages[6].Scale = 0;
}
_stages[5].Time = Math.Max(0, (int)(sampleRate * (envelopeInfo.ReleaseTime)));
_stages[5].Graph = Tables.EnvelopeTables(envelopeInfo.ReleaseGraph);
_index = 0;
Value = 0;
CurrentStage = EnvelopeState.Delay;
while (_stages[(int)CurrentStage].Time == 0)
{
CurrentStage++;
}
_stage = _stages[(int)CurrentStage];
}
private void LoadEnvelopes(Sf2Region region)
{
//
//mod env
mod_env = new EnvelopeDescriptor();
mod_env.AttackTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.AttackModulationEnvelope] / 1200.0);
mod_env.AttackGraph = 3;
mod_env.DecayTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.DecayModulationEnvelope] / 1200.0);
mod_env.DelayTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.DelayModulationEnvelope] / 1200.0);
mod_env.HoldTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.HoldModulationEnvelope] / 1200.0);
mod_env.PeakLevel = 1;
mod_env.ReleaseTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.ReleaseModulationEnvelope] / 1200.0);
mod_env.StartLevel = 0;
mod_env.SustainLevel = 1f - SynthHelper.ClampS(region.Generators[(int)GeneratorEnum.SustainModulationEnvelope], (short)0, (short)1000) / 1000f;
//checks
if (mod_env.AttackTime < 0.001f)
mod_env.AttackTime = 0.001f;
else if (mod_env.AttackTime > 100f)
mod_env.AttackTime = 100f;
if (mod_env.DecayTime < 0.001f)
mod_env.DecayTime = 0;
else if (mod_env.DecayTime > 100f)
mod_env.DecayTime = 100f;
if (mod_env.DelayTime < 0.001f)
mod_env.DelayTime = 0;
else if (mod_env.DelayTime > 20f)
mod_env.DelayTime = 20f;
if (mod_env.HoldTime < 0.001f)
mod_env.HoldTime = 0;
else if (mod_env.HoldTime > 20f)
mod_env.HoldTime = 20f;
if (mod_env.ReleaseTime < 0.001f)
mod_env.ReleaseTime = 0.001f;
else if (mod_env.ReleaseTime > 100f)
mod_env.ReleaseTime = 100f;
//
// volume env
vel_env = new EnvelopeDescriptor();
vel_env.AttackTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.AttackVolumeEnvelope] / 1200.0);
vel_env.AttackGraph = 3;
vel_env.DecayTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.DecayVolumeEnvelope] / 1200.0);
vel_env.DelayTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.DelayVolumeEnvelope] / 1200.0);
vel_env.HoldTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.HoldVolumeEnvelope] / 1200.0);
vel_env.PeakLevel = 0;
vel_env.ReleaseTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.ReleaseVolumeEnvelope] / 1200.0);
vel_env.StartLevel = -100;
vel_env.SustainLevel = SynthHelper.ClampS(region.Generators[(int)GeneratorEnum.SustainVolumeEnvelope], (short)0, (short)1000) / -10f;
// checks
if (vel_env.AttackTime < 0.001f)
vel_env.AttackTime = 0.001f;
else if (vel_env.AttackTime > 100f)
vel_env.AttackTime = 100f;
if (vel_env.DecayTime < 0.001f)
vel_env.DecayTime = 0;
else if (vel_env.DecayTime > 100f)
vel_env.DecayTime = 100f;
if (vel_env.DelayTime < 0.001f)
vel_env.DelayTime = 0;
else if (vel_env.DelayTime > 20f)
vel_env.DelayTime = 20f;
if (vel_env.HoldTime < 0.001f)
vel_env.HoldTime = 0;
else if (vel_env.HoldTime > 20f)
vel_env.HoldTime = 20f;
if (vel_env.ReleaseTime < 0.001f)
vel_env.ReleaseTime = 0.001f;
else if (vel_env.ReleaseTime > 100f)
vel_env.ReleaseTime = 100f;
}
