// Let's add something new here: Either save data we can use to do it, or do it
// Detect the best Flute instrument
// The best flute instrument: Has many notes, has long notes, covers a large octave area
// So while we already track the octaves covered, we should track numNotes and avgNoteLength of each track or channel
// That also might mean we need to start tracking data for tracks, instead of just channels, and allow a toggle to show those instead
private void HandleLoadCompleted(object sender, AsyncCompletedEventArgs e)
{
tickMetaNotes.Clear();
var startTime = DateTime.Now;
lock (loadLock)
{
if (e.Error == null)
{
//channelNames = new Dictionary<int, string>();
//trackNames = new Dictionary<int, string>();
channels = new Dictionary <int, MidiChannelItem>();
tracks = new Dictionary <int, TrackItem>();
// Set default channel names
foreach (var channelNum in sequence.Channels)
{
var midiChannel = new MidiChannelItem();
midiChannel.Id = channelNum;
midiChannel.Name = MidiChannelTypes.Names[channelNum];
midiChannel.Active = true;
channels[channelNum] = midiChannel;
}
foreach (var midiTrack in sequence.Tracks)
{
var track = new TrackItem();
track.Id = midiTrack.Id;
if (!string.IsNullOrWhiteSpace(midiTrack.Name))
{
track.Name = midiTrack.Name;
}
else
{
track.Name = "Untitled Track";
}
track.lowestNote = midiTrack.MinNoteId;
track.highestNote = midiTrack.MaxNoteId;
track.Active = true;
tracks[midiTrack.Id] = track;
}
//Parallel.ForEach(sequence, track =>
//{
foreach (var track in sequence)
{
foreach (var midiEvent in track.Iterator())
{
if (midiEvent.MidiMessage is ChannelMessage c)
{
if (!channels.ContainsKey(c.MidiChannel))
{
var midiChannel = new MidiChannelItem();
midiChannel.Id = c.MidiChannel;
midiChannel.Name = MidiChannelTypes.Names[c.MidiChannel];
midiChannel.Active = true;
channels[c.MidiChannel] = midiChannel;
}
if (c.Data2 > 0 && c.Command == ChannelCommand.NoteOn)
{
if (c.MidiChannel == 9) // Glockenspiel - always channel 9
{
drumNoteCounts[c.Data1]++; // They're all 0 by default
channels[c.MidiChannel].Active = false; // Disabled by default
}
if (c.Data1 > channels[c.MidiChannel].highestNote)
{
channels[c.MidiChannel].highestNote = c.Data1;
}
if (c.Data1 < channels[c.MidiChannel].lowestNote)
{
channels[c.MidiChannel].lowestNote = c.Data1;
}
// Track noteOn events and when we get a noteOff or velocity 0, add up note lengths
channels[c.MidiChannel].noteTicks[c.Data1] = midiEvent.AbsoluteTicks;
channels[c.MidiChannel].numNotes++;
if (!channels[c.MidiChannel].tickNotes.ContainsKey(midiEvent.AbsoluteTicks))
{
channels[c.MidiChannel].tickNotes[midiEvent.AbsoluteTicks] = new List <MidiNote>();
}
channels[c.MidiChannel].tickNotes[midiEvent.AbsoluteTicks].Add(new MidiNote()
{
note = c.Data1, tickNumber = midiEvent.AbsoluteTicks, track = track.Id, channel = c.MidiChannel
});
// Ideally I'd like to parse out chords of size 3 or more, using some setting like RemoveLowest, RemoveHighest, RemoveMiddle
// Though I'm unsure how I'd really do that to anything except lutemod; lutebot is reading straight from the midi data isn't it?
}
else if (c.Command == ChannelCommand.ProgramChange)
{
string channelName = MidiChannelTypes.Names[c.Data1];
channels[c.MidiChannel].Name = channelName;
}
else if (c.Command == ChannelCommand.NoteOff || (c.Command == ChannelCommand.NoteOn && c.Data2 == 0))
{
if (channels[c.MidiChannel].noteTicks.ContainsKey(c.Data1))
{
// Find the original note...
var startTick = channels[c.MidiChannel].noteTicks[c.Data1];
var length = midiEvent.AbsoluteTicks - startTick;
var note = channels[c.MidiChannel].tickNotes[startTick].Where(n => n.note == c.Data1).FirstOrDefault();
note.length = length;
// If we already have a note with a length on this same tick, we don't need to add to totalNoteLength...?
// I want to avoid a chord of 3 having 3x the detected total length...
// I'll just have to deal with that later, and we won't bother tracking totalLength here
// Just add all the lengths, we'll divide after we read everything
channels[c.MidiChannel].avgNoteLength += length;
channels[c.MidiChannel].noteTicks.Remove(c.Data1);
}
}
}
else if (midiEvent.MidiMessage is MetaMessage meta)
{
if (meta.MetaType == MetaType.TrackName)
{
var bytes = meta.GetBytes();
// Byte 3 is the length, bytes 4+ are the text in ascii
// But apparently the library trims out that for me, and the entire bytes array is what we want
if (bytes.Length > 0)
{
string trackName = ASCIIEncoding.ASCII.GetString(bytes);
tracks[track.Id].Name = trackName;
}
}
else if (meta.MetaType == MetaType.Tempo)
{
var newTempo = BytesToInt(meta.GetBytes()); // We divide by division when converting for lutemod only, apparently
if (!tickMetaNotes.ContainsKey(midiEvent.AbsoluteTicks))
{
tickMetaNotes[midiEvent.AbsoluteTicks] = new List <MidiNote>();
}
tickMetaNotes[midiEvent.AbsoluteTicks].Add(new MidiNote()
{
note = newTempo, tickNumber = midiEvent.AbsoluteTicks, track = track.Id
});
}
}
}
}//);
// So, now we have a totalNoteLength... except, no. That's not quite useful
// We do have the list of all notes with lengths on them, though.
// So we can get a total length of parts by, for each tick/entry, take the longest length for that tick
// And then only count new notes if their start+length > thatTick+thatLength
// Compile noteLengths of channels
foreach (var kvp in channels)
{
var channel = kvp.Value;
if (channel.numNotes > 0)
{
channel.avgNoteLength = channel.avgNoteLength / channel.numNotes;
}
int nextValidTick = 0;
foreach (var noteKvp in channel.tickNotes.OrderBy(n => n.Key))
{
var noteList = noteKvp.Value;
var note = noteList.OrderByDescending(n => n.length).First();
if (note.tickNumber > nextValidTick)
{
channel.totalNoteLength += note.length;
nextValidTick = note.tickNumber + note.length;
}
else if (note.tickNumber + note.length > nextValidTick)
{
var diff = (note.tickNumber + note.length) - nextValidTick;
channel.totalNoteLength += diff;
nextValidTick = nextValidTick + diff;
}
}
if (channel.tickNotes.Count > 0)
{
channel.maxChordSize = channel.tickNotes.Max(t => t.Value.Count);
}
}
// Add a note on the drum channel
if (channels.ContainsKey(9))
{
channels[9].Name += " (DRUMS)";
}
// Remove any channels or tracks that don't contain any notes
channels = channels.Values.Where(c => c.numNotes > 0).ToDictionary(c => c.Id);
Console.WriteLine("Read track data in " + (DateTime.Now - startTime).TotalMilliseconds);
// Now let's get a sorted list of drum note counts
// I can't figure out how to do this nicely.
//for (int i = 0; i < drumNoteCounts.Length; i++)
//{
// DrumNoteCounts.Add(new KeyValuePair<int, int>(i, drumNoteCounts[i]));
//}
//DrumNoteCounts = DrumNoteCounts.OrderBy((kvp) => kvp.Value).ToList();
base.LoadCompleted(this, e);
mordhauOutDevice.HighMidiNoteId = sequence.MaxNoteId;
mordhauOutDevice.LowMidiNoteId = sequence.MinNoteId;
rustOutDevice.HighMidiNoteId = sequence.MaxNoteId;
rustOutDevice.LowMidiNoteId = sequence.MinNoteId;
}
}
}
