+ Track[] tracks = seq.getTracks();
+ emptyTracks = new ArrayList();
+
+ // Searches track 0 for changes in tempo and time signature.
+ MidiEvent event;
+ MetaMessage metaMsg;
+ ArrayList ts = new ArrayList(), tc = new ArrayList();
+ for (int i = 0; i < tracks[0].size(); i++) {
+ event = tracks[0].get(i);
+ if (event.getMessage().getStatus() == MetaMessage.META) {
+ metaMsg = (MetaMessage)event.getMessage();
+ switch(metaMsg.getType()) {
+ case 81: tc.add(event); break;
+ case 88: ts.add(event);
+ }
+ }
+ }
+// timeSignatures = ts.toArray(timeSignatures);
+// tempoChanges = tc.toArray(tempoChanges);
+
+ // Wraps each NoteOn event with its NoteOff event in a MooNote
+ ArrayList noteOns, noteOffs;
+ for (int i = 0; i < tracks.length; i++) {
+ // Searches the sequence for NoteOn and NoteOff events
+ noteOns = new ArrayList(tracks[i].size() / 2);
+ noteOffs = new ArrayList(tracks[i].size() / 2);
+ for (int j = 0; j < tracks[i].size(); j++) {
+ event = tracks[i].get(j);
+ if (event.getMessage().getStatus() >= 144 &&
+ event.getMessage().getStatus() < 160) noteOns.add(event);
+ if (event.getMessage().getStatus() >= 128 &&
+ event.getMessage().getStatus() < 144) noteOffs.add(event);
+ }
+ noteOns.trimToSize();
+ noteOffs.trimToSize();
+ boolean isEmpty = (noteOns.size() == 0);
+ String text = "Track " + i + " has " + noteOns.size() + "/" + noteOffs.size() + "/" + tracks[i].size();
+ if (isEmpty) text += " and will not be removed.";
+ System.out.println(text);
+ emptyTracks.add(tracks[i]);
+
+ // Sorts the note lists by tick position.
+ Comparator c = new Comparator() {
+ public int compare(Object o1, Object o2) {
+ return (int)(((MidiEvent)o1).getTick() - ((MidiEvent)o2).getTick());
+ }
+ };
+ Collections.sort(noteOns, c);
+ Collections.sort(noteOffs, c);
+
+ // For each NoteOn event, finds its NoteOff event and replaces it with a MooNote.
+ Iterator iOn = noteOns.iterator(), iOff;
+ MidiEvent on, off = null, nextOff;
+ ShortMessage onMsg, nextOffMsg;
+ while(iOn.hasNext()) {
+ on = (MidiEvent)iOn.next();
+ onMsg = (ShortMessage)on.getMessage();
+ iOff = noteOffs.iterator();
+ while(iOff.hasNext()) {
+ nextOff = (MidiEvent)iOff.next();
+ nextOffMsg = (ShortMessage)nextOff.getMessage();
+ if(onMsg.getChannel() == nextOffMsg.getChannel() &&
+ onMsg.getData1() == nextOffMsg.getData1() &&
+ c.compare(nextOff, on) > 0) {
+ off = nextOff;
+ iOff.remove();
+ break;
+ }
+
+ }
+ tracks[i].remove(on);
+ if (off != null) {
+ tracks[i].add(new MooNote(on, off));
+ } else {
+ tracks[i].add(new MooNote(on));
+ }
+ iOn.remove();
+ }
+ }
+
+ /*
+ Collections.sort(track[i].events, new Comparator() {
+ public int compare(Object o1, Object o2) {
+ return ((MidiEvent)o2).getTick() - ((MidiEvent)o1).getTick();
+ }
+ });