public Flanger(int sampleRate, double minDelay, double maxDelay)
{
if (minDelay > maxDelay)
{
double m = minDelay;
minDelay = maxDelay;
maxDelay = m;
}
LfoDescriptor description = new LfoDescriptor();
this.lfo = new Lfo();
this.lfo.QuickSetup(sampleRate, description);
this.baseDelay = (int)(sampleRate * (maxDelay - minDelay));
this.minDelay = (int)(sampleRate * minDelay);
int size = (int)(sampleRate * maxDelay) + 1;
this.inputBuffer1 = new float[size];
this.outputBuffer1 = new float[size];
this.position1 = 0;
this.inputBuffer2 = new float[size];
this.outputBuffer2 = new float[size];
this.position2 = 0;
this.fBack = .15f;
this.wMix = .5f;
this.dMix = .5f;
}
public DescriptorList(StreamReader reader)
{
List<EnvelopeDescriptor> envList = new List<EnvelopeDescriptor>();
List<FilterDescriptor> fltrList = new List<FilterDescriptor>();
List<LfoDescriptor> lfoList = new List<LfoDescriptor>();
List<GeneratorDescriptor> genList = new List<GeneratorDescriptor>();
List<CustomDescriptor> cList = new List<CustomDescriptor>();
List<string> descList = new List<string>();
while (!reader.EndOfStream)
{
string tag = ReadNextTag(reader, descList);
switch (tag)
{
case "envelope":
{
EnvelopeDescriptor env = new EnvelopeDescriptor();
env.Read(descList.ToArray());
envList.Add(env);
break;
}
case "generator":
{
GeneratorDescriptor gen = new GeneratorDescriptor();
gen.Read(descList.ToArray());
genList.Add(gen);
break;
}
case "filter":
{
FilterDescriptor fltr = new FilterDescriptor();
fltr.Read(descList.ToArray());
fltrList.Add(fltr);
break;
}
case "lfo":
{
LfoDescriptor lfo = new LfoDescriptor();
lfo.Read(descList.ToArray());
lfoList.Add(lfo);
break;
}
default:
if (!tag.Equals(string.Empty))
{
CustomDescriptor cus = new CustomDescriptor(tag, 0);
cus.Read(descList.ToArray());
cList.Add(cus);
}
break;
}
descList.Clear();
}
EnvelopeDescriptions = envList.ToArray();
FilterDescriptions = fltrList.ToArray();
LfoDescriptions = lfoList.ToArray();
GenDescriptions = genList.ToArray();
CustomDescriptions = cList.ToArray();
}
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 override void Load(DescriptorList description, AssetManager assets)
{
gen = description.GenDescriptions[0].ToGenerator(assets);
env = description.EnvelopeDescriptions[0];
lfo = description.LfoDescriptions[0];
}
public DescriptorList(BinaryReader reader)
{
List<EnvelopeDescriptor> envList = new List<EnvelopeDescriptor>();
List<FilterDescriptor> fltrList = new List<FilterDescriptor>();
List<LfoDescriptor> lfoList = new List<LfoDescriptor>();
List<GeneratorDescriptor> genList = new List<GeneratorDescriptor>();
List<CustomDescriptor> cList = new List<CustomDescriptor>();
int count = reader.ReadInt16();
for (int x = 0; x < count; x++)
{
string id = new string(IOHelper.Read8BitChars(reader, 4));
int size = reader.ReadInt32();
switch (id.ToLower())
{
case EnvelopeDescriptor.ID:
{
EnvelopeDescriptor env = new EnvelopeDescriptor();
env.Read(reader);
envList.Add(env);
break;
}
case GeneratorDescriptor.ID:
{
GeneratorDescriptor gen = new GeneratorDescriptor();
gen.Read(reader);
genList.Add(gen);
break;
}
case FilterDescriptor.ID:
{
FilterDescriptor fltr = new FilterDescriptor();
fltr.Read(reader);
fltrList.Add(fltr);
break;
}
case LfoDescriptor.ID:
{
LfoDescriptor lfo = new LfoDescriptor();
lfo.Read(reader);
lfoList.Add(lfo);
break;
}
default:
{
CustomDescriptor cus = new CustomDescriptor(id, size);
cus.Read(reader);
cList.Add(cus);
break;
}
}
}
EnvelopeDescriptions = envList.ToArray();
FilterDescriptions = fltrList.ToArray();
LfoDescriptions = lfoList.ToArray();
GenDescriptions = genList.ToArray();
CustomDescriptions = cList.ToArray();
}
private void LoadSfzLfos(SfzRegion region)
{
LfoDescriptions = new LfoDescriptor[3];
LfoDescriptions[0] = new LfoDescriptor();
LfoDescriptions[0].DelayTime = region.pitchLfoDelay; //make sure pitch lfo is enabled for midi mod event
LfoDescriptions[0].Frequency = region.pitchLfoFrequency > 0 ? region.pitchLfoFrequency : (float)Synthesizer.DefaultLfoFrequency;
LfoDescriptions[0].Depth = region.pitchLfoDepth;
LfoDescriptions[1] = new LfoDescriptor();
LfoDescriptions[1].DelayTime = region.filterLfoDelay;
LfoDescriptions[1].Frequency = region.filterLfoFrequency;
LfoDescriptions[1].Depth = region.filterLfoDepth;
LfoDescriptions[2] = new LfoDescriptor();
LfoDescriptions[2].DelayTime = region.ampLfoDelay;
LfoDescriptions[2].Frequency = region.ampLfoFrequency;
LfoDescriptions[2].Depth = (float)SynthHelper.DBtoLinear(region.ampLfoDepth);
}
private void LoadLfos(Sf2Region region)
{
mod_lfo = new LfoDescriptor();
mod_lfo.DelayTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.DelayModulationLFO] / 1200.0);
mod_lfo.Frequency = (float)(Math.Pow(2, region.Generators[(int)GeneratorEnum.FrequencyModulationLFO] / 1200.0) * 8.176);
mod_lfo.Generator = AudioSynthesis.Bank.Components.Generators.Generator.DefaultSine;
vib_lfo = new LfoDescriptor();
vib_lfo.DelayTime = (float)Math.Pow(2, region.Generators[(int)GeneratorEnum.DelayVibratoLFO] / 1200.0);
vib_lfo.Frequency = (float)(Math.Pow(2, region.Generators[(int)GeneratorEnum.FrequencyVibratoLFO] / 1200.0) * 8.176);
vib_lfo.Generator = AudioSynthesis.Bank.Components.Generators.Generator.DefaultSine;
}
public override void Load(DescriptorList description, AssetManager assets)
{
//read in sfz params
CustomDescriptor sfzConfig = description.FindCustomDescriptor("sfzi");
exTarget = (int)sfzConfig.Objects[0];
exGroup = (int)sfzConfig.Objects[1];
sfzVolume = (float)sfzConfig.Objects[2];
sfzPan = new PanComponent((float)sfzConfig.Objects[3], PanFormulaEnum.Neg3dBCenter);
ampKeyTrack = (float)sfzConfig.Objects[4];
ampRootKey = (byte)sfzConfig.Objects[5];
ampVelTrack = (float)sfzConfig.Objects[6];
//read in the generator info
GeneratorDescriptor gdes = description.GenDescriptions[0];
if (gdes.SamplerType != WaveformEnum.SampleData)
throw new Exception("Sfz can only support sample data generators.");
gen = gdes.ToGenerator(assets);
//read in the envelope info
ptch_env = description.EnvelopeDescriptions[0];
fltr_env = description.EnvelopeDescriptions[1];
amp_env = description.EnvelopeDescriptions[2];
//read in the lfo info
ptch_lfo = description.LfoDescriptions[0];
fltr_lfo = description.LfoDescriptions[1];
amp_lfo = description.LfoDescriptions[2];
//read in the filter info
fltr = description.FilterDescriptions[0];
}
public override void Load(DescriptorList description, AssetManager assets)
{
CustomDescriptor fmConfig = description.FindCustomDescriptor("fm2c");
cIndex = (double)fmConfig.Objects[0];
mIndex = (double)fmConfig.Objects[1];
feedBack = (double)fmConfig.Objects[2];
sync = GetSyncModeFromString((string)fmConfig.Objects[3]);
if (description.GenDescriptions[0].LoopMethod != LoopModeEnum.Continuous || description.GenDescriptions[1].LoopMethod != LoopModeEnum.Continuous)
throw new Exception("Fm2 patches must have continuous generators with wrapping bounds.");
cGen = description.GenDescriptions[0].ToGenerator(assets);
mGen = description.GenDescriptions[1].ToGenerator(assets);
cEnv = description.EnvelopeDescriptions[0];
mEnv = description.EnvelopeDescriptions[1];
lfo = description.LfoDescriptions[0];
}
