/*
* var startTime = System.Diagnostics.Stopwatch.StartNew();
* startTime.Stop();
* var resultTime = startTime.Elapsed;
* string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:000}",
* resultTime.Hours,
* resultTime.Minutes,
* resultTime.Seconds,
* resultTime.Milliseconds);
*/
public float GetSampleValue(ModuleMixerChannel mc)
{
if (mc.instrumentIndex <= 0)
{
return(0.0f);
}
ModuleInstrument sampleData = module.Instruments[(int)mc.instrumentIndex - 1];
mc.instrumentPosition = sampleData.CalculateInstrumentPosition(mc.instrumentPosition);
return(GetSampleValueSimple(mc));
}
protected virtual float GetSampleValueLinear(ModuleMixerChannel mc)
{
ModuleInstrument sampleData = module.Instruments[(int)mc.instrumentIndex - 1];
int posInt = (int)mc.instrumentPosition;
float posReal = mc.instrumentPosition - posInt;
float a1 = sampleData[posInt];
if ((posInt + 1) >= mc.instrumentLength)
{
return(a1 * mc.channelVolume);
}
float a2 = sampleData[posInt + 1];
return((a1 + (a2 - a1) * posReal) * mc.channelVolume);
}
protected virtual float GetSampleValueSpline(ModuleMixerChannel mc)
{
ModuleInstrument sampleData = module.Instruments[(int)mc.instrumentIndex - 1];
int posInt = (int)mc.instrumentPosition;
float posReal = mc.instrumentPosition - posInt;
float a2 = sampleData[posInt];
if (((posInt - 1) < 0) || ((posInt + 2) >= mc.instrumentLength))
{
return(a2 * mc.channelVolume);
}
float a1 = sampleData[posInt - 1];
float a3 = sampleData[posInt + 1];
float a4 = sampleData[posInt + 2];
float b0 = a1 + a2 + a2 + a2 + a2 + a3;
float b1 = -a1 + a3;
float b2 = a1 - a2 - a2 + a3;
float b3 = -a1 + a2 + a2 + a2 - a3 - a3 - a3 + a4;
return((((b3 * posReal * 0.1666666f + b2 * 0.5f) * posReal + b1 * 0.5f) * posReal + b0 * 0.1666666f) * mc.channelVolume);
}
protected virtual float GetSampleValueSimple(ModuleMixerChannel mc)
{
ModuleInstrument sampleData = module.Instruments[(int)mc.instrumentIndex - 1];
return(sampleData[(int)mc.instrumentPosition] * mc.channelVolume);
}
public void Add(ModuleInstrument instrument)
{
instruments.Add(instrument);
}
