public ChordSegment(Key key, ChordSegment previousChordSegment, BeatEvent beat, byte lowestPitch)
{
Key = key;
PreviousChordSegment = previousChordSegment;
Beat = beat;
NotesInLevel2Beats = new NotesInSegment(beat.AbsoluteRealTime, beat.Length, lowestPitch);
BestPrevious = new int[24];
Scores = new double[24];
BaseScores = new double[24];
}
public ChordAnalyzer(Model midi)
{
_midi = midi;
_beats = _midi.EventsOfType <BeatEvent>().OrderBy(b => b.AbsoluteRealTime).ToArray();
_segments = new ChordSegment[_beats.Length];
_lowestPitch = midi.EventsOfType <NoteOn>(n => !n.IsPercussion && n.Volume > 0).Min(n => n.NoteNumber);
var keyChanges = midi.IsKeyFoundByMidiItself
? new Queue <KeySignature>(midi.EventsOfType <KeySignature>().OrderBy(k => k.AbsoluteRealTime))
: new Queue <KeySignature>();
var actualKey = midi.IsKeyFoundByMidiItself ? keyChanges.Dequeue().Key : midi.Key.Value;
_segments[0] = new ChordSegment(actualKey, null, _beats[0], _lowestPitch);
for (var i = 1; i < _segments.Length; i++)
{
while (keyChanges.Count > 0 && keyChanges.Peek().AbsoluteRealTime <= _beats[i].AbsoluteRealTime)
{
actualKey = keyChanges.Dequeue().Key;
}
_segments[i] = new ChordSegment(actualKey, _segments[i - 1], _beats[i], _lowestPitch);
}
}
