public IList <MusicSampleProvider> GetNextMixerInputs(int sampleCount)
{
List <MusicSampleProvider> mixerInputs = new List <MusicSampleProvider>();
int samplePos = 0;
while (samplePos < sampleCount)
{
for (int note = 0; note < drumPattern.Notes; note++)
{
if (drumPattern[note, currentStep] != 0)
{
var sampleProvider = drumKit.GetSampleProvider(note);
Debug.WriteLine("beat at step {0}, patternPostion={1}", currentStep, patternPosition);
double offsetFromCurrent = (currentStep - patternPosition);
if (offsetFromCurrent < 0)
{
offsetFromCurrent += drumPattern.Steps;
}
sampleProvider.DelayBy = (int)(this.samplesPerStep * offsetFromCurrent);
mixerInputs.Add(sampleProvider);
}
}
samplePos += samplesPerStep;
currentStep++;
currentStep = currentStep % drumPattern.Steps;
}
this.patternPosition += ((double)sampleCount / samplesPerStep);
if (this.patternPosition > drumPattern.Steps)
{
this.patternPosition -= drumPattern.Steps;
}
return(mixerInputs);
}
public IList <MusicSampleProvider> GetNextMixerInputs(int sampleCount)
{
List <MusicSampleProvider> mixerInputs = new List <MusicSampleProvider>();
int samplePos = 0;
if (newTempo)
{
int samplesPerBeat = (this.drumKit.WaveFormat.Channels * this.drumKit.WaveFormat.SampleRate * 60) / tempo;
this.samplesPerStep = samplesPerBeat / 4;
//patternPosition = 0;
newTempo = false;
}
while (samplePos < sampleCount)
{
double offsetFromCurrent = (currentStep - patternPosition);
if (offsetFromCurrent < 0)
{
offsetFromCurrent += drumPattern.Steps;
}
int delayForThisStep = (int)(this.samplesPerStep * offsetFromCurrent);
if (delayForThisStep >= sampleCount)
{
// don't queue up any samples beyond the requested time range
break;
}
for (int note = 0; note < drumPattern.Notes; note++)
{
if (drumPattern[note, currentStep] != 0)
{
var sampleProvider = drumKit.GetSampleProvider(note);
sampleProvider.DelayBy = delayForThisStep;
Debug.WriteLine("beat at step {0}, patternPostion={1}, delayBy {2}", currentStep, patternPosition, delayForThisStep);
mixerInputs.Add(sampleProvider);
}
}
samplePos += samplesPerStep;
currentStep++;
currentStep = currentStep % drumPattern.Steps;
}
this.patternPosition += ((double)sampleCount / samplesPerStep);
if (this.patternPosition > drumPattern.Steps)
{
this.patternPosition -= drumPattern.Steps;
}
return(mixerInputs);
}