/// <summary>
/// Loads a Harmony Sequence though
/// </summary>
/// <param name="f"></param>
/// <returns></returns>
public static Composition LoadMidiType1(MidiFile f)
{
Composition comp = new Composition();
int c = 1;
foreach(var trackEvents in f.Events)
{
Track t = new Track();
t.Channel = (byte)c++;
TempoEvent tempo = new TempoEvent((int)(Note.ToRealDuration((int)Durations.qn, 60) * 1000000), 0);
HarmonySequence seq = new HarmonySequence();
long lastAbsTime = -1;
List<int> chordNotes = new List<int>(); int chordDuration = 0;
PatchNames instr = (PatchNames)9999;
bool add = true;
foreach(var e in trackEvents)
{
if (e as TempoEvent != null)
{
tempo = (TempoEvent)e;
}
if (e as PatchChangeEvent != null)
{
var p = e as PatchChangeEvent;
t.Instrument = (PatchNames)p.Patch;
if(t.Instrument == instr)
{
break;
}
instr = t.Instrument;
/*if(t.Duration < 1)
{
foreach(var t_ in comp.Tracks)
if(t_.Instrument == (PatchNames)p.Patch)
{
t = t_;
seq = t_.GetMainSequence() as HarmonySequence;
add = false;
break;
}
}*/
}
NoteOnEvent on = e as NoteOnEvent;
if (on != null && on.OffEvent != null)
{
int newDuration = Note.ToNoteLength(on.NoteLength, f.DeltaTicksPerQuarterNote, tempo.Tempo);
if (on.AbsoluteTime == lastAbsTime && chordDuration==newDuration)//skip chords
{
chordNotes.Add(on.NoteNumber);
}
else
{
Chord lastChord = new Chord(chordNotes.ToArray(), chordDuration);
chordNotes.Clear(); chordDuration = 0;
seq.AddChord(lastChord);
chordNotes.Add(on.NoteNumber);
}
chordDuration = newDuration;
lastAbsTime = on.AbsoluteTime;
}
}
if(chordNotes.Count > 0)
{
Chord lastChord = new Chord(chordNotes.ToArray(), chordDuration);
chordNotes.Clear(); chordDuration = 0;
seq.AddChord(lastChord);
}
t.AddSequence(seq);
if (!comp.Tracks.Contains(t) && t.Duration > 0 && add)
comp.Add(t);
}
return comp;
}
static void ChordTest()
{
MusicPlayer player = new MusicPlayer();
Chord dminor = new Chord(new NoteNames[] { NoteNames.D, NoteNames.F, NoteNames.A }, 4, Durations.wn);
Chord dmajor = new Chord(new NoteNames[] { NoteNames.G, NoteNames.B, NoteNames.B }, 4, Durations.wn);
Chord cmajor = new Chord(new NoteNames[] { NoteNames.C, NoteNames.E, NoteNames.G }, 4, Durations.bn);
HarmonySequence seq = new HarmonySequence();
seq.AddChord(dminor); seq.AddChord(dmajor); seq.AddChord(cmajor); seq.AddChord(dminor); seq.AddChord(cmajor); seq.AddChord(dminor); seq.AddChord(dmajor); seq.AddChord(cmajor);
player.Play(seq);
player.Close();
}
public HarmonySequence GetHarmonySequence(MelodySequence seq)
{
HarmonySequence sequence = new HarmonySequence();
foreach(Note n in seq.ToArray())
{
if (n.Pitch > 0 && n.Velocity > 0 && n.Duration > (int)Durations.en)
sequence.AddChord(GetChord(n));
else
seq.AddPause(n.Duration);
}
return sequence;
}
