private Common.Models.Rest GetRest(Rest rest)
{
if (int.TryParse(rest.Value.TrimStart('r'), out var duration))
{
return(new Common.Models.Rest(DurationUtils.GetClosestDuration(duration)));
}
return(null);
}
private IList <MetaSymbolGroup> GetMetadataFromTrack(Track track)
{
var symbolGroups = new List <MetaSymbolGroup>();
MetaSymbolGroup last = null;
foreach (var e in track.Iterator())
{
var message = e.MidiMessage;
if (message.MessageType != MessageType.Meta)
{
continue;
}
var metaMessage = message as MetaMessage;
switch (metaMessage?.MetaType)
{
case MetaType.TimeSignature:
if (last != null)
{
last.End = e.AbsoluteTicks;
}
var timeSignatureBytes = metaMessage.GetBytes();
var beat = 1 / Math.Pow(timeSignatureBytes[1], -2);
var symbolGroup = new SymbolGroup
{
Meter = new TimeSignature
{
Ticks = timeSignatureBytes[0],
Beat = DurationUtils.GetClosestDuration(beat)
}
};
var meta = new MetaSymbolGroup {
Start = e.AbsoluteTicks, SymbolGroup = symbolGroup
};
symbolGroups.Add(meta);
last = meta;
_currentTimeSignature = symbolGroup.Meter;
break;
case MetaType.Tempo:
var tempoBytes = metaMessage.GetBytes();
var tempo = (tempoBytes[0] & 0xff) << 16 | (tempoBytes[1] & 0xff) << 8 |
(tempoBytes[2] & 0xff);
last.SymbolGroup.Tempo = 60000000 / tempo; // bpm
break;
}
}
return(symbolGroups);
}
private void SetTimeSignature(string value)
{
var values = value.Split('/');
if (!int.TryParse(values[0], out var ticks) || !int.TryParse(values[1], out var beat))
{
return;
}
_lastTimeSignature = new TimeSignature
{
Ticks = ticks, Beat = DurationUtils.GetClosestDuration(beat)
};
if (_currentGroup.Symbols.Count == 0) // still empty
{
_currentGroup.Meter = _lastTimeSignature;
return;
}
CreateNewSymbolGroup();
}
private Common.Models.Note GetNote(Note note)
{
var name = Regex.Replace(note.Value, @"[\d',.]", string.Empty);
int.TryParse(Regex.Replace(note.Value, @"[A-Za-z',.]", string.Empty), out var duration);
AlterOctave(note.Value);
// set previous to the new note
_previous = new Common.Models.Note((Names)name[0], _relativeOctave, DurationUtils.GetClosestDuration(duration));
if (name.EndsWith("es") || name.EndsWith("as"))
{
_previous.Modifier = Common.Definitions.Modifiers.Flat;
}
else if (name.EndsWith("is"))
{
_previous.Modifier = Common.Definitions.Modifiers.Sharp;
}
_previous.Dots = note.Value.ToCharArray().Count(dot => dot == '.');
return(_previous);
}
