private static MusicNote CheckCache(string note, int a4Reference)
{
MusicNote musicNote = null;
if (MusicNoteCache == null)
{
MusicNoteCache = new BiMap <string, MusicNote>();
}
if (MusicNoteCache.Forward.ContainsKey(note))
{
musicNote = MusicNoteCache.Forward[note];
}
if (musicNote == null)
{
musicNote = new MusicNote()
{
Key = note,
Reference = a4Reference
};
musicNote.Error += MusicNote_Error;
musicNote.InitializeNote();
if (musicNote.IsValid)
{
FactoryCreateNote?.Invoke(musicNote, new EventArgs());
MusicNoteCache.Add(note, musicNote);
}
else
{
return(null);
}
}
return(musicNote);
}
/// <summary>
/// Plays the note using the current <see cref="IPlayer"/> for <see cref="Duration"/>ms
/// </summary>
public void PlayNote()
{
if (DesiredOctave > Frequencies.Count() - 1)
{
var error = new ArgumentException($"{DesiredOctave} is too high of an Octave to play {Key}", nameof(DesiredOctave));
Error?.Invoke(this, error);
}
else
{
try
{
string[] desiredChord = null;
switch (ChordType)
{
case ChordType.Note:
desiredChord = new string[] { Key };
break;
case ChordType.Power:
desiredChord = PowerChord;
break;
case ChordType.MinorThird:
desiredChord = MinorChord3;
break;
case ChordType.MajorThird:
desiredChord = MajorChord3;
break;
case ChordType.MinorSeventh:
desiredChord = MinorChord7;
break;
case ChordType.MajorSeventh:
desiredChord = MajorChord7;
break;
}
PlayingNote?.Invoke(this, new EventArgs());
var musicNotes = desiredChord.Select(sn => MusicNote.Create(sn));
var frequencies = musicNotes.Select(mn => new FrequencyDuration(mn.Key, mn.DesiredOctave, mn.Frequencies[DesiredOctave], Duration));
NotePlayer?.Play(frequencies, Instrument);
}
catch (Exception ex)
{
Error?.Invoke(this, ex);
}
}
}