percentileEncodeMicros method
Linear-interpolation percentile (q in [0, 100]) of
Vp8FrameStats.encodeDurationMicros over the most recent
rolling window. Returns 0.0 when rolling stats are disabled or
the window is empty.
Implementation
double percentileEncodeMicros(double q) {
_validatePercentile(q);
if (_ringFill == 0) return 0.0;
final s = List<int>.generate(_ringFill, (i) => _ringMicros[i])..sort();
return _interpPercentileInt(s, q);
}