public LfoDescriptor()
{
DelayTime = 0;
Frequency = SynthConstants.DefaultLfoFrequency;
Depth = 1;
Generator = DefaultGenerators.DefaultSine;
}
public void QuickSetup(int sampleRate, LfoDescriptor lfoInfo)
{
_generator = lfoInfo.Generator;
_delayTime = (int)(sampleRate * lfoInfo.DelayTime);
Frequency = lfoInfo.Frequency;
_increment = _generator.Period * Frequency / sampleRate;
Depth = lfoInfo.Depth;
Reset();
}
public Lfo()
{
CurrentState = LfoState.Delay;
_generator = DefaultGenerators.DefaultSine;
_delayTime = 0;
_increment = 0;
_phase = 0;
Frequency = 0;
CurrentState = 0;
Value = 0;
Depth = 0;
}
private void LoadGen(Sf2Region region, AssetManager assets)
{
SampleDataAsset sda = assets.SampleAssets[region.Generators[(int)GeneratorEnum.SampleID]];
gen = new SampleGenerator();
gen.EndPhase = sda.End + region.Generators[(int)GeneratorEnum.EndAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.EndAddressCoarseOffset];
gen.Frequency = sda.SampleRate;
gen.KeyTrack = region.Generators[(int)GeneratorEnum.ScaleTuning];
gen.LoopEndPhase = sda.LoopEnd + region.Generators[(int)GeneratorEnum.EndLoopAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.EndLoopAddressCoarseOffset];
switch (region.Generators[(int)GeneratorEnum.SampleModes] & 0x3)
{
case 0x0:
case 0x2:
gen.LoopMode = LoopMode.NoLoop;
break;
case 0x1:
gen.LoopMode = LoopMode.Continuous;
break;
case 0x3:
gen.LoopMode = LoopMode.LoopUntilNoteOff;
break;
}
gen.LoopStartPhase = sda.LoopStart + region.Generators[(int)GeneratorEnum.StartLoopAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.StartLoopAddressCoarseOffset];
gen.Offset = 0;
gen.Period = 1.0;
if (region.Generators[(int)GeneratorEnum.OverridingRootKey] > -1)
{
gen.RootKey = region.Generators[(int)GeneratorEnum.OverridingRootKey];
}
else
{
gen.RootKey = sda.RootKey;
}
gen.StartPhase = sda.Start + region.Generators[(int)GeneratorEnum.StartAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.StartAddressCoarseOffset];
gen.Tune = (short)(sda.Tune + region.Generators[(int)GeneratorEnum.FineTune] + 100 * region.Generators[(int)GeneratorEnum.CoarseTune]);
gen.VelocityTrack = 0;
((SampleGenerator)gen).Samples = sda.SampleData;
}
public void QuickSetup(Generator generator)
{
CurrentStart = generator.StartPhase;
Phase = CurrentStart + generator.Offset;
switch (generator.LoopMode)
{
case LoopMode.Continuous:
case LoopMode.LoopUntilNoteOff:
if (Phase >= generator.EndPhase)
{//phase is greater than the end index so generator is finished
CurrentState = GeneratorState.Finished;
}
else if (Phase >= generator.LoopEndPhase)
{//phase is greater than the loop end point so generator is in post loop
CurrentState = GeneratorState.PostLoop;
CurrentEnd = generator.EndPhase;
}
else if (Phase >= generator.LoopStartPhase)
{//phase is greater than loop start so we are inside the loop
CurrentState = GeneratorState.Loop;
CurrentEnd = generator.LoopEndPhase;
CurrentStart = generator.LoopStartPhase;
}
else
{//phase is less than the loop so generator is in pre loop
CurrentState = GeneratorState.PreLoop;
CurrentEnd = generator.LoopStartPhase;
}
break;
default:
CurrentEnd = generator.EndPhase;
if (Phase >= CurrentEnd)
CurrentState = GeneratorState.Finished;
else
CurrentState = GeneratorState.PostLoop;
break;
}
}
private void LoadGen(Sf2Region region, AssetManager assets)
{
SampleDataAsset sda = assets.SampleAssets[region.Generators[(int)GeneratorEnum.SampleID]];
gen = new SampleGenerator();
gen.EndPhase = sda.End + region.Generators[(int)GeneratorEnum.EndAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.EndAddressCoarseOffset];
gen.Frequency = sda.SampleRate;
gen.KeyTrack = region.Generators[(int)GeneratorEnum.ScaleTuning];
gen.LoopEndPhase = sda.LoopEnd + region.Generators[(int)GeneratorEnum.EndLoopAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.EndLoopAddressCoarseOffset];
switch (region.Generators[(int)GeneratorEnum.SampleModes] & 0x3)
{
case 0x0:
case 0x2:
gen.LoopMode = LoopMode.NoLoop;
break;
case 0x1:
gen.LoopMode = LoopMode.Continuous;
break;
case 0x3:
gen.LoopMode = LoopMode.LoopUntilNoteOff;
break;
}
gen.LoopStartPhase = sda.LoopStart + region.Generators[(int)GeneratorEnum.StartLoopAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.StartLoopAddressCoarseOffset];
gen.Offset = 0;
gen.Period = 1.0;
if (region.Generators[(int)GeneratorEnum.OverridingRootKey] > -1)
gen.RootKey = region.Generators[(int)GeneratorEnum.OverridingRootKey];
else
gen.RootKey = sda.RootKey;
gen.StartPhase = sda.Start + region.Generators[(int)GeneratorEnum.StartAddressOffset] + 32768 * region.Generators[(int)GeneratorEnum.StartAddressCoarseOffset];
gen.Tune = (short)(sda.Tune + region.Generators[(int)GeneratorEnum.FineTune] + 100 * region.Generators[(int)GeneratorEnum.CoarseTune]);
gen.VelocityTrack = 0;
((SampleGenerator)gen).Samples = sda.SampleData;
}
