private void LoadGen(Sf2Region region, AssetManager assets)
{
SampleDataAsset sda = assets.SampleAssetList[region.Generators[(int)GeneratorEnum.SampleID]];
SampleGenerator 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 = LoopModeEnum.NoLoop;
break;
case 0x1:
gen.LoopMode = LoopModeEnum.Continuous;
break;
case 0x3:
gen.LoopMode = LoopModeEnum.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;
gen.Samples = sda.SampleData;
this.genList[0] = gen;
}
public SampleGenerator(GeneratorDescriptor description, AssetManager assets)
: base(description)
{
SampleDataAsset sample = assets.FindSample(Path.GetFileNameWithoutExtension(description.AssetName));
if (sample == null)
{
throw new Exception("Could not find asset: (" + description.AssetName + ").");
}
data = sample.SampleData;
freq = sample.SampleRate;
if (end < 0)
{
end = sample.End;
}
if (start < 0)
{
start = sample.Start;
}
if (loopEnd < 0)
{
if (sample.LoopEnd < 0)
{
loopEnd = end;
}
else
{
loopEnd = sample.LoopEnd;
}
}
if (loopStart < 0)
{
if (sample.LoopStart < 0)
{
loopStart = start;
}
else
{
loopStart = sample.LoopStart;
}
}
if (genPeriod < 0)
{
genPeriod = 1;
}
if (root < 0)
{
root = sample.RootKey;
if (tuneCents == 0)
{
tuneCents = sample.Tune;
}
}
//check sample end and loop end for consistency
if (end > data.Length)
{
end = data.Length;
}
if (loopEnd > end)
{
loopEnd = end;
}
}
