private void Update(EvaluationContext context)
{
var list = Input.GetValue(context);
if (list == null || list.Count == 0)
{
return;
}
var lowerLimit = Math.Max(0, LowerLimit.GetValue(context));
var upperLimit = Math.Min(list.Count, UpperLimit.GetValue(context));
var sum = 0f;
for (var index = lowerLimit; index < upperLimit; index++)
{
sum += list[index];
}
Selected.Value = sum;
}
private void Update(EvaluationContext context)
{
var fft = FftInput.GetValue(context);
if (fft == null || fft.Count == 0)
{
return;
}
_bpmRangeMin = LowestBpm.GetValue(context);
if (_bpmRangeMin < 50)
{
_bpmRangeMin = 50;
}
else if (_bpmRangeMin > 200)
{
_bpmRangeMin = 200;
}
_bpmRangeMax = HighestBpm.GetValue(context);
if (_bpmRangeMax < _bpmRangeMin)
{
_bpmRangeMax = _bpmRangeMin + 1;
}
else if (_bpmRangeMax > 200)
{
_bpmRangeMax = 200;
}
if (_bpmEnergies.Count != _bpmRangeMax - _bpmRangeMin)
{
_bpmEnergies = new List <float>(new float[_bpmRangeMax - _bpmRangeMin]);
}
var bufferDuration = (int)BufferDurationSec.GetValue(context) * 60;
if (bufferDuration < 60)
{
bufferDuration = 60;
}
else if (bufferDuration > 60 * 60)
{
bufferDuration = 60 * 60;
}
_bufferLength = bufferDuration;
_lockInFactor = LockItFactor.GetValue(context);
UpdateBuffer(fft, LowerLimit.GetValue(context), UpperLimit.GetValue(context));
SmoothBuffer(ref _smoothedBuffer, _buffer);
var bestBpm = 0f;
var bestMeasurement = float.PositiveInfinity;
for (var bpm = _bpmRangeMin; bpm < _bpmRangeMax; bpm++)
{
var m = MeasureEnergyDifference(bpm) / ComputeFocusFactor(bpm, _currentBpm, 4, _lockInFactor);
if (m < bestMeasurement)
{
bestMeasurement = m;
bestBpm = bpm;
}
_bpmEnergies[bpm - _bpmRangeMin] = m;
}
foreach (var offset in _searchOffsets)
{
var bpm = _currentBpm + offset;
if (bpm < 70 || bpm > 160)
{
continue;
}
var m = MeasureEnergyDifference(bpm) / ComputeFocusFactor(bpm, _currentBpm, 2, 0.01f);
if (!(m < bestMeasurement))
{
continue;
}
bestMeasurement = m;
bestBpm = bpm;
}
DetectedBpm.Value = bestBpm;
_currentBpm = bestBpm;
Measurements.Value = _bpmEnergies;
}