public static (int missing, int wrong) CalculateDiff(StringRelatedChord calculatedWithBackground, StringRelatedChord actualChordToBePlayed, List <int> heardNotes)
{
int missing = 0;
int wrong = 0;
Chord chord = actualChordToBePlayed.ConvertToChord();
List <int> wrongNotes = new List <int>();
foreach (var note in chord.Notes)
{
if (!heardNotes.Contains(note))
{
missing++;
}
}
chord = calculatedWithBackground.ConvertToChord();
foreach (var heardNote in heardNotes)
{
if (!chord.ContainsNoteIncludingHarmonics(heardNote))
{
if (wrongNotes.All(wrongNote => heardNote % 12 != wrongNote % 12))
{
wrong++;
wrongNotes.Add(heardNote);
}
}
}
return(missing, wrong);
}
public StringRelatedChord UpdateWith(StringRelatedChord chord)
{
StringRelatedChord newStringRelatedChord = new StringRelatedChord(Tune, new List <int?>(Frets));
for (int i = 0; i < 6; i++)
{
if (chord.Frets[i] != null)
{
newStringRelatedChord.Frets[i] = chord.Frets[i];
}
}
return(newStringRelatedChord);
}
public void LoadTab(string[] lines)
{
Tab.Clear();
int minCharIndex = lines.Select(line => line.Length).Min();
for (int charIndex = 0; charIndex < minCharIndex; charIndex++)
{
bool noFretsHit = true;
StringRelatedChord tempChord = new StringRelatedChord(Tune);
for (int lineIndex = 0; lineIndex < 6; lineIndex++)
{
char c = lines[lineIndex][charIndex];
if (c >= '0' && c <= '9')
{
noFretsHit = false;
int fret = c - '0';
tempChord.Frets.Add(fret);
}
else
{
tempChord.Frets.Add(null);
}
}
if (!noFretsHit)
{
Tab.Add(tempChord);
}
}
TabWithBackground.Add(Tab[0]);
for (int i = 1; i < Tab.Count; i++)
{
TabWithBackground.Add(TabWithBackground[i - 1].UpdateWith(Tab[i]));
}
if (Tab.Count == 0)
{
OnTabLoaded?.Invoke(null);
return;
}
OnTabLoaded?.Invoke(Tab);
}
public void Compare(double[] noteBins)
{
DateTime now = DateTime.Now;
List <int> heardNotes = new List <int>();
for (int i = 0; i < noteBins.Length; i++)
{
if (noteBins[i] > 0.01)
{
heardNotes.Add(i);
}
}
var timeSpanMs = (now - LastSuccessfulRecognition).TotalMilliseconds;
var delayMs = MinimumDelay.TotalMilliseconds;
for (int i = 1; i < MaximumPositionSkip && i + CurrentPosition < Tab.Count; i++)
{
if (timeSpanMs < delayMs * i)
{
return;
}
StringRelatedChord possibleCurrentChord = TabWithBackground[CurrentPosition + i];
int missing, wrong;
(missing, wrong) =
StringRelatedChord.CalculateDiff(possibleCurrentChord, Tab[CurrentPosition + i], heardNotes);
int notesCount = Tab[CurrentPosition + i].GetFretsCount();
int maximumMissing = (int)Math.Round(notesCount * this.MaximumMissingNotesFraction);
if (missing <= maximumMissing && wrong <= MaximumWrongNotes)
{
CurrentPosition += i;
LastSuccessfulRecognition = DateTime.Now;
OnPositionUpdated?.Invoke(CurrentPosition);
return;
}
}
}
