public void SetStep()
{
Assert.AreEqual(MusicalTimeSpan.Quarter, PatternBuilder.DefaultStep, "Default step is invalid.");
var patternBuilder = new PatternBuilder();
Assert.AreEqual(PatternBuilder.DefaultStep, patternBuilder.Step, "Invalid initial step.");
var step = new BarBeatFractionTimeSpan(0, 2.5);
patternBuilder.SetStep(step);
Assert.AreEqual(step, patternBuilder.Step, "Invalid step after change.");
}
/// <summary> Constructs an IMidiFile instance based on a MIDI file stream.</summary>
/// <param name="stream"> stream of the midi file content. </param>
/// <param name="disposeStream"> Set true if stream is to be closed by the constructor once it's done reading the file. </param>
internal DryWetMidiAdapter(Stream stream, bool disposeStream = false)
{
// initialization
Stream = stream;
stream.Position = 0;
_midiContent = MidiFile.Read(stream);
_tempoMap = _midiContent.GetTempoMap();
IList <TrackChunk> trackChunks = _midiContent.GetTrackChunks().ToList();
_metadataTrack = trackChunks.First();
_metaEvents = _metadataTrack.Events.ToList();
// set midi title property
Title = (((from e in _metaEvents
where e.EventType == MidiEventType.SequenceTrackName
select e).First()) as BaseTextEvent)?.Text ?? "Undefined";
// set key signature property
TimeSignatureEvent timeSignatureEvent = (from e in _metaEvents
where e.EventType == MidiEventType.TimeSignature
select e)?.First() as TimeSignatureEvent;
KeySignature = MusicTheoryFactory.CreateDuration(timeSignatureEvent.Numerator, timeSignatureEvent.Denominator, false);
// set number of bars property
BarBeatFractionTimeSpan duration = _midiContent.GetDuration <BarBeatFractionTimeSpan>();
NumberOfBars = (int)duration.Bars + (int)Math.Ceiling(duration.Beats / timeSignatureEvent.Numerator);
// set BPM property
BeatsPerMinute = (byte)(_midiContent.GetTempoMap()?.Tempo.AtTime(0).BeatsPerMinute);
// set MIDI pitch range
IEnumerable <DWMidiI.Note> notes = _midiContent.GetNotes();
LowestPitch = (NotePitch)(byte)(notes.Min(note => note.NoteNumber));
HighestPitch = (NotePitch)(byte)(notes.Max(note => note.NoteNumber));
// dispose stream if requested
if (disposeStream)
{
stream.Dispose();
}
}
