encode method
Implementation
encode(int phase, int period) {
if (phase == 0 && period == 0) {
return '00';
}
final quantizeFactor = max(period >> 12, 1);
final encoded = min(15, max(1, _getTrailingZeros(period) - 1)) |
(phase ~/ quantizeFactor << 4);
return hex.encode(_littleIntToUint8List(encoded, 2));
}