+
+ ob = trackMute.get(tracks[i]);
+ if(ob instanceof Boolean){
+ sequencer.setTrackMute(i,((Boolean)ob).booleanValue());
+ }
+ }
+
+ // Disables input to volatile components
+ // gui.disable();
+
+ // Creates the visualisation thread and starts it.
+ player = new PlayThread();
+ player.start();
+ }
+
+ /**
+ * Pauses playback of the current sequence.
+ */
+ public static void pause() {
+ if (sequencer.isRunning()) {
+ sequencer.stop();
+ }
+ player = null;
+ }
+
+ /**
+ * Stops playback of the current sequence.
+ */
+ public static void stop() {
+ if (sequencer.isRunning()) {
+ sequencer.stop();
+ }
+ sequencer.setTickPosition(editPosition);
+ player = null;
+ gui.update((long)0);
+ }
+
+
+
+
+
+
+
+
+ /* ***
+ ** SYSTEM & IO METHODS **
+ *** */
+
+
+
+
+
+
+
+
+ /**
+ * Replaces the current sequence with a new one, holding three empty tracks.
+ */
+ public static void clearSequence() {
+ try {
+ // Creates a new sequence.
+ seq = new Sequence(Sequence.PPQ, DEFAULT_RESOLUTION, DEFAULT_TRACKS);
+ Track[] tracks = seq.getTracks();
+
+ // Creates messages for default tempo (120) and time signature (4/4), and adds them to track 0.
+ MetaMessage timeSigMsg = new MetaMessage();
+ MetaMessage tempoMsg = new MetaMessage();
+ try {
+ timeSigMsg.setMessage(88, encodeTimeSig(4, 4), 4);
+ tempoMsg.setMessage(81, encodeTempo(120), 3);
+ } catch (InvalidMidiDataException e) {}
+ tracks[0].add(new MidiEvent(timeSigMsg, (long)0));
+ tracks[0].add(new MidiEvent(tempoMsg, (long)0));
+
+ // Sets program and title for the tracks.
+ initializeTrack(tracks[1], 0, 24, "Guitar");
+ initializeTrack(tracks[2], 1, 33, "Bass");
+ initializeTrack(tracks[3], 9, 0, "Drums");
+ } catch (InvalidMidiDataException e) {}
+
+ // Reinitializes sequence variables
+ file = null;
+ reinitializeVariables();
+
+ // Sends the sequence to the GUI.
+ if (gui != null) gui.setSequence(seq, null);
+ }
+
+ /**
+ * Creates event in the given track for program change and title.
+ */
+ private static void initializeTrack(Track track, int channel, int program, String title) {
+ // Creates program change and title message.
+ ShortMessage programMsg = new ShortMessage();
+ MetaMessage titleMsg = new MetaMessage();
+
+ // Sets the data of the messages.
+ try {
+ programMsg.setMessage(ShortMessage.PROGRAM_CHANGE, channel, program, 0);
+ titleMsg.setMessage(3, title.getBytes(), title.length());
+ } catch (InvalidMidiDataException e) {}
+
+ // Sends the program change to the channel
+ getChannel(channel).programChange(program);
+
+ // Adds them to the track.
+ track.add(new MidiEvent(programMsg, (long)0));
+ track.add(new MidiEvent(titleMsg, (long)0));
+ }
+
+ /**
+ * Wraps each NoteOn event in the track with its NoteOff event in a MooNote.
+ * @param track the track to convert
+ * @param quantize whether to round locations and durations in the track to nearest 16th
+ * @return a list of the created MooNotes
+ */
+ public static List convertTrack(Track track, boolean quantize) {
+ // Searches the track for NoteOn and NoteOff events
+ ArrayList noteOns = new ArrayList(track.size() / 2);
+ ArrayList noteOffs = new ArrayList(track.size() / 2);
+ ArrayList newMooNotes = new ArrayList();
+ MidiEvent event;
+ for (int j = 0; j < track.size(); j++) {
+ event = track.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();
+ if (noteOns.size() == 0) emptyTracks.add(track);
+
+ // Sorts the note lists by tick position.
+ Comparator c = new MidiEventComparator();
+ Collections.sort(noteOns, c);
+ Collections.sort(noteOffs, c);
+
+ // Replaces each NoteOn event it with a MooNote containing a reference to the NoteOff event.
+ Iterator iOn = noteOns.iterator(), iOff;
+ MidiEvent on, off = null, nextOff;
+ ShortMessage onMsg, nextOffMsg;
+ while(iOn.hasNext()) {
+ on = (MidiEvent)iOn.next();
+ if (!(on instanceof MooNote)) {