public void Import(
EditorFile file,
string filename,
PorterOptions options
)
{
var midifile = new MidiFile(filename, false);
var trackcontainer =
file[TrackControllerContainer.ItemName] as TrackControllerContainer;
var musictrackfactory =
trackcontainer
.Tracks
.FactorySet
.Factories
.FirstOrDefault(_ => _ is MusicTrackFactory)
.Name;
for (int track_index = 0; track_index < midifile.Tracks; track_index++)
{
var events = midifile.Events.GetTrackEvents(track_index);
var track =
(MusicTrack)trackcontainer.Tracks.Create(musictrackfactory);
foreach (var e in events)
{
switch (e.CommandCode)
{
case MidiCommandCode.NoteOn: {
var e1 = (NoteOnEvent)e;
var start =
ImportTime(e1.AbsoluteTime, midifile);
var length =
ImportTime(e1.NoteLength, midifile);
var duration =
new Duration {
Start = start,
Length = length
};
track.Melody.AddNote(new SemiTone(e1.NoteNumber - 12), duration);
break;
}
case MidiCommandCode.NoteOff: {
var e1 = (NoteEvent)e;
break;
}
case MidiCommandCode.MetaEvent: {
var meta = (MetaEvent)e;
switch (meta.MetaEventType)
{
case MetaEventType.Copyright:
break;
case MetaEventType.CuePoint:
break;
case MetaEventType.DeviceName:
break;
case MetaEventType.EndTrack:
break;
case MetaEventType.KeySignature: {
var keysigevent = (KeySignatureEvent)meta;
var circle5index = (sbyte)keysigevent.SharpsFlats;
Mode mode;
switch (keysigevent.MajorMinor)
{
case 1:
mode = Mode.Major;
break;
case 0:
mode = Mode.Minor;
break;
default:
throw new InvalidOperationException();
}
PitchTransform transform;
var key =
CircleOfFifths.Index(circle5index, ChromaticPitchClass.C, out transform);
var sig =
KeySignature.Create(
key,
transform,
mode
);
var start =
ImportTime(keysigevent.AbsoluteTime, midifile);
track
.Adornment
.KeySignatures
.OverwriteEverythingToRight(
sig,
start
);
break;
}
case MetaEventType.Lyric:
break;
case MetaEventType.Marker:
break;
case MetaEventType.MidiChannel:
break;
case MetaEventType.MidiPort:
break;
case MetaEventType.ProgramName:
break;
case MetaEventType.SequencerSpecific:
break;
case MetaEventType.SequenceTrackName: {
var text = (TextEvent)meta;
track.Name.Value = text.Text;
break;
}
case MetaEventType.SetTempo:
var tempoevent = meta as TempoEvent;
// Can midi files have linear varying tempos?
// if so, then this code doesn't handle all midis.
if (options.PortTempo)
{
track
.Tempo
.SetTempo(
ImportTime(tempoevent.AbsoluteTime, midifile),
(float)tempoevent.Tempo / 4
);
}
break;
case MetaEventType.SmpteOffset:
break;
case MetaEventType.TextEvent:
break;
case MetaEventType.TimeSignature:
var timesigevent = (TimeSignatureEvent)meta;
var timesig =
new TimeSignature(
new Simple(
timesigevent.Numerator,
timesigevent.Denominator
)
);
track
.Rhythm
.TimeSignatures
.OverwriteEverythingToRight(
timesig,
ImportTime(timesigevent.AbsoluteTime, midifile)
);
break;
case MetaEventType.TrackInstrumentName:
break;
case MetaEventType.TrackSequenceNumber:
break;
default:
throw new InvalidOperationException();
}
break;
}
case MidiCommandCode.PatchChange: {
break;
}
case MidiCommandCode.ControlChange: {
break;
}
default:
throw new InvalidOperationException();
}
}
}
}
