public MidiMetaData(Midi midi, BmsTrackDetectionMode mode)
{
mChildren = new MidiTrackMetaData[16];
switch (mode) {
case BmsTrackDetectionMode.Manual: {
var metaData = midi.Select(track => MidiTrackMetaData.fromTrack(track));
Root = metaData.FirstOrDefault(t => t.TrackType == BmsTrackType.Root);
for (var i = 0; i < 16; ++i) {
mChildren[i] = metaData.FirstOrDefault(t => t.TrackType == BmsTrackType.Child && t.TrackId == i);
}
break;
}
case BmsTrackDetectionMode.Auto: {
Root = MidiTrackMetaData.fromTrack(midi.FirstOrDefault(track => track.All(midiEvent => midiEvent is MetaEvent || midiEvent is ControlChangeEvent)));
foreach (var track in midi.Where(track => track.Any<NoteOnEvent>())) {
var id = track.First<ChannelEvent>().ChannelNumber;
if (mChildren[id] != null) {
MIDItoBMS.error("More than one track with ID {0}.", id);
}
mChildren[id] = MidiTrackMetaData.fromTrack(track);
}
break;
}
}
if (Root == null) {
MIDItoBMS.error("Failed to detect root track.");
}
}
