private static Sequence seq;
private static Sequencer sequencer;
private static Synthesizer synthesizer;
+ private static Receiver receiver;
private static MidiChannel[] channels;
private static MidiChannel activeChannel;
private static MidiEvent[] timeSignatures, tempoChanges;
- private static String filename, fileArg;
- private static long editPosition;
- private static boolean makeGUI = true, isEdited;
+ private static ArrayList copyBuffer, emptyTracks;
+ private static Map trackMute = new HashMap();
+ private static Map trackSolo = new HashMap();
private static Thread player;
+
+ private static String filename;
+ private static long editPosition;
+ private static boolean makeGUI = true, initSound = true, edited = false, drawEmptyTracks = false;
public static final int DEFAULT_RESOLUTION = 96, DEFAULT_TRACKS = 4;
+ public static final int WHOLE_NOTE = 0, HALF_NOTE = 1, QUARTER_NOTE = 2, EIGHTH_NOTE = 3, SIXTEENTH_NOTE = 4;
/**
* Starts the application.
+ *
+ * Parses command-line arguments, acquires MIDI devices and connects them,
+ * loads a sequence and creates the GUI.
*/
public static void main (String[] args) {
System.out.println("\nMoosique version 1.0\n");
// Parses command-line arguments.
+ String fileArg = null;
for (int i = 0; i < args.length; i++) {
- if (args[i].equals("-n")) {makeGUI = false;}
- else if (fileArg == null) {fileArg = args[i];}
+ if (args[i].equals("-n")) makeGUI = false;
+ else if (fileArg == null) fileArg = args[i];
}
// Acquires MIDI devices and connects them.
System.out.print("Initializing MIDI devices.");
try {
+ // Configures sequencer
sequencer = MidiSystem.getSequencer();
System.out.print(".");
sequencer.open();
+ sequencer.addMetaEventListener(new SongEndListener());
+
+ // Configures synthesizer
synthesizer = MidiSystem.getSynthesizer();
System.out.print(".");
synthesizer.open();
- sequencer.getTransmitter().setReceiver(synthesizer.getReceiver());
+
+ // Configures receiver, transmitter and channels.
+ receiver = synthesizer.getReceiver();
+ sequencer.getTransmitter().setReceiver(receiver);
channels = synthesizer.getChannels();
setActiveChannel(0);
} catch (MidiUnavailableException e) {
System.out.println("Failed, quitting.");
-// System.exit(1);
+ System.exit(1);
}
System.out.println("Done");
+ // Loads user preferences (work directory, last opened files etc).
+ loadPreferences();
+
//If a filename is given as the command-line argument, attempts to load a sequence from the file.
if (fileArg != null) {
System.out.print("Loading MIDI sequence from " + fileArg + "...");
if (!load(fileArg)) {
- System.out.println("Failed");
+ System.out.println("Failed, creating new sequence");
clearSequence();
} else {
System.out.println("Done");
// Builds GUI, unless n-flag is set.
if (makeGUI) {
- System.out.print("Building GUI...");
+ System.out.print("Building GUI.");
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {}
}
}
+
+
+
+
+
+
+
+ /* ***
+ ** ACCESSOR METHODS **
+ *** */
+
+
+
+
+
+
+
+
+ /**
+ * Returns the currently active MidiChannel.
+ * @return the active MidiChannel
+ */
+ public static MidiChannel getActiveChannel() {
+ return activeChannel;
+ }
+
+ /**
+ * Returns the MidiChannels of the selected synthesizer.
+ * @return the available MidiChannels
+ */
+ public static MidiChannel getChannel(int i) {
+ return channels[i];
+ }
+
+ /**
+ * Returns the MidiChannels of the selected synthesizer.
+ * @return the available MidiChannels
+ */
+ public static MidiChannel[] getChannels() {
+ return channels;
+ }
+
+ /**
+ * Returns the current copy buffer.
+ * @return the current copy buffer
+ */
+ public static ArrayList getCopyBuffer() {
+ return copyBuffer;
+ }
+
+ /**
+ * Returns the current editing position of the sequencer.
+ * @return the tick position
+ */
+ public static long getEditPosition() {
+ return editPosition;
+ }
+
/**
* Returns the GUI.
* @return the GUI
return gui;
}
+ /**
+ * Calculates the position (measures, beats, ticks) in the current sequence for the given tick position.
+ * @return an array of integers where index 0 is measures, 1 is beats and 2 is ticks.
+ */
+ public static int[] getPositionForTicks(long ticks) {
+ /*
+ int measures, beats, ticks;
+ for (int i = 0; i < timeSignatures.length; i++) {
+ long tick = timeSignatures[i].getTick();
+ // Split the ticks in the interval into measures, beats and ticks.
+ }
+ */
+ int[] pos = {1, 1, 1};
+ return pos;
+ }
+
+ /**
+ * Returns the receiver of the current sequencer.
+ * @return the receiver
+ */
+ public static Receiver getReceiver() {
+ return receiver;
+ }
+
/**
* Returns the current sequence.
* @return the current sequence
}
/**
- * Returns the MidiChannels of the selected synthesizer.
- * @return the available MidiChannels
+ * Returns the tempo of the current sequence.
+ * @return the tick position
*/
- public static MidiChannel[] getChannels() {
- return channels;
+ public static int getTempo() {
+ return 120;
+ // if (tempoMsg == null) return 0;
}
/**
- * Returns the MidiChannels of the selected synthesizer.
- * @return the available MidiChannels
+ * Calculates the tick position in the current sequence for the given position (measures, beats, ticks).
+ * @return the tick position.
*/
- public static MidiChannel getChannel(int i) {
- return channels[i];
+ public static long getTicksForPosition(int measures, int beats, int ticks) {
+ long tickPos = 0;
+ /*
+ for (int i = 0; i < timeSignatures.length; i++) {
+ long tick = timeSignatures[i].getTick();
+ // Add the measures, beats and ticks in the interval.
+ }
+ */
+ return tickPos;
}
/**
- * Returns the currently active MidiChannel.
- * @return the active MidiChannel
+ * Returns the tempo of the current sequence.
+ * @return the tick position
*/
- public static MidiChannel getActiveChannel() {
- return activeChannel;
+ public static int[] getTimeSig() {
+ int[] ts = {4, 4};
+ return ts;
+ // if (timeSigMsg == null) return 0;
}
/**
- * Sets the currently active MidiChannel.
- * @param channel the number of the MidiChannel to activate
+ * Returns true if the current sequence has been edited.
+ * @return the tick position
*/
- public static void setActiveChannel(int channel) {
- activeChannel = channels[channel];
+ public static boolean isEdited() {
+ return edited;
}
/**
- * Replaces the current sequence with a new one, holding three empty tracks.
+ * Returns whether the given track should be drawn
+ * @return true if the given track should be drawn
*/
- public static void clearSequence() {
- // Creates a new sequence and sends it to the sequencer.
- try {
- seq = new Sequence(Sequence.PPQ, DEFAULT_RESOLUTION, DEFAULT_TRACKS);
- sequencer.setSequence(seq);
- } catch (InvalidMidiDataException e) {}
- // Sends sequence to GUI.
- if (gui != null) gui.setSequence(seq);
+ public static boolean shouldBeDrawn(Track track) {
+ if (drawEmptyTracks) return true;
+ else return (!emptyTracks.contains(track));
}
+
+
+
+
+
+
+
+ /* ***
+ ** MUTATOR METHODS **
+ *** */
+
+
+
+
+
+
+
+
/**
- * Starts playback of the current sequence.
+ * Fast forwards the current sequence the given number of measures.
+ * @param measures the number of measures to fast forward
*/
- public static void play() {
- sequencer.setTickPosition(editPosition);
- resume();
+ public static void forward(long ticks) {
+ editPosition += ticks;
}
/**
- * Pauses playback of the current sequence.
+ * Rewinds the current sequence the given number of measures.
+ * @param measures the number of measures to rewind
*/
- public static void pause() {
- if (sequencer.isRunning()) {
- sequencer.stop();
- }
- if (player != null) player.interrupt();
+ public static void rewind(long ticks) {
+ editPosition -= ticks;
}
/**
- * Resumes playback of the current sequence.
+ * Sets the currently active MidiChannel.
+ * @param channel the number of the MidiChannel to activate
*/
- public static void resume() {
- gui.update(0);
- sequencer.start();
-
- // Disables input to volatile components
- // gui.disable();
-
- System.out.println("Ticks/16: " + seq.getResolution()/4);
+ public static void setActiveChannel(int channel) {
+ activeChannel = channels[channel];
+ }
- // Creates the visualisation thread and starts it.
- player = new Thread () {
- public void run() {
- long position = sequencer.getTickPosition();
- while(sequencer.isRunning()) {
- long pos = sequencer.getTickPosition();
- System.out.print(" ... " + (pos - position));
- position = pos;
-
- // Updates the GUI with the current tick position.
- gui.update(sequencer.getTickPosition());
-
- // Puts the thread to sleep for as long as it takes
- // the sequencer to reach the next sixteenth.
- try {
- sleep((long)(15000 / getTempo()));
- } catch (InterruptedException e) {
- Moosique.stop();
- }
- }
- Moosique.stop();
- }
- };
- player.start();
+ /**
+ * Sets the current copy buffer.
+ * @param the copy buffer
+ */
+ public static void setCopyBuffer(ArrayList buffer) {
+ copyBuffer = buffer;
}
/**
- * Stops playback of the current sequence.
+ * Sets whether empty tracks should be drawn
+ * @param state true if empty tracks should be drawn
*/
- public static void stop() {
- if (sequencer.isRunning()) {
- sequencer.stop();
- }
- sequencer.setTickPosition(editPosition);
- if (player != null) player.interrupt();
- gui.update((long)0);
+ public static void setDrawEmptyTracks(boolean state) {
+ drawEmptyTracks = state;
}
/**
- * Returns the current editing position of the sequencer.
- * @return the tick position
+ * Sets the current sequence as edited, which implies prompts when loading a new sequence.
*/
- public static long getEditPosition() {
- return editPosition;
+ public static void setEdited() {
+ edited = true;
}
/**
}
/**
- * Returns the tempo of the current sequence.
- * @return the tick position
+ * Sets the current editing position of the sequencer.
+ * @param ticks the tick position
*/
- public static int getTempo() {
- return 120;
- // if (tempoMsg == null) return 0;
+ public static void setTempo(int bpm) {
+ // tempoMsg
}
/**
* Sets the current editing position of the sequencer.
* @param ticks the tick position
*/
- public static void setTempo(int bpm) {
- // tempoMsg
+ public static void setTimeSig(int bpm) {
+ // timeSigMsg
}
-
+
/**
- * Returns the tempo of the current sequence.
- * @return the tick position
+ * Sets the solo setting of the given track.
+ * @param on true for solo, false for not
*/
- public static int[] getTimeSig() {
- int[] ts = {4, 4};
- return ts;
- // if (timeSigMsg == null) return 0;
+ public static void setTrackSolo(Track track, boolean on){
+ trackSolo.put(track, new Boolean(on));
}
/**
- * Sets the current editing position of the sequencer.
- * @param ticks the tick position
+ * Sets the mute setting of the given track.
+ * @param on true for mute, false for not
*/
- public static void setTimeSig(int bpm) {
- // timeSigMsg
+ public static void setTrackMute(Track track, boolean on){
+ trackMute.put(track, new Boolean(on));
}
/**
- * Returns true if the current sequence has been edited.
- * @return the tick position
+ * Sets the current playback volume.
+ * @param volume the volume, between 0 and 1
*/
- public static boolean isEdited() {
- return isEdited;
+ public void setVolume(long volume) {
+ for (int i = 0; i < channels.length; i++) {
+ channels[i].controlChange(7, (int)(volume * 127.0));
+ }
}
+
+
+
+
+
+
+
+ /* ***
+ ** PLAYBACK METHODS **
+ *** */
+
+
+
+
+
+
+
+
/**
- * Sets the current sequence as edited, which implies prompts when loading a new sequence.
+ * Starts playback of the current sequence.
*/
- public static void setEdited() {
- isEdited = true;
+ public static void play() {
+ sequencer.setTickPosition(editPosition);
+ resume();
}
/**
- * Rewinds the current sequence the given number of measures.
- * @param measures the number of measures to rewind
+ * Resumes playback of the current sequence.
*/
- public static void rewind(long ticks) {
- editPosition -= ticks;
+ public static void resume() {
+ gui.update(0);
+ try {
+ sequencer.setSequence(seq);
+ } catch (InvalidMidiDataException e) {}
+ Track[] tracks = seq.getTracks();
+
+ sequencer.start();
+
+ for (int i = 0; i < tracks.length; i++) {
+
+ Object ob = trackSolo.get(tracks[i]);
+ if(ob instanceof Boolean){
+ sequencer.setTrackSolo(i,((Boolean)ob).booleanValue());
+ }
+
+ 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();
}
/**
- * Fast forwards the current sequence the given number of measures.
- * @param measures the number of measures to fast forward
+ * Pauses playback of the current sequence.
*/
- public static void forward(long ticks) {
- editPosition += ticks;
+ public static void pause() {
+ if (sequencer.isRunning()) {
+ sequencer.stop();
+ }
+ if (player != null) player.interrupt();
}
/**
- * Loads the MooSequence in the given file.
- * @param filename the filename to use
+ * Stops playback of the current sequence.
*/
- public static boolean load(String file) {
- // Loads sequence from file
- filename = file;
- try {
- seq = MidiSystem.getSequence(new File(filename));
- } catch (InvalidMidiDataException e) {
- return false;
- } catch (IOException e) {
- return false;
+ public static void stop() {
+ if (sequencer.isRunning()) {
+ sequencer.stop();
}
- isEdited = false;
+ sequencer.setTickPosition(editPosition);
+ if (player != null) player.interrupt();
+ gui.update((long)0);
+ }
- Track[] tracks = seq.getTracks();
- // Searches track 0 for changes in tempo and time signature.
+
+
+
+
+
+
+ /* ***
+ ** SYSTEM & IO METHODS **
+ *** */
+
+
+
+
+
+
+
+
+ /**
+ * Replaces the current sequence with a new one, holding three empty tracks.
+ */
+ public static void clearSequence() {
+ // Creates a new sequence and sends it to the sequencer.
+ try {
+ seq = new Sequence(Sequence.PPQ, DEFAULT_RESOLUTION, DEFAULT_TRACKS);
+ sequencer.setSequence(seq);
+ filename = null;
+ emptyTracks = new ArrayList();
+ trackSolo = new HashMap();
+ trackMute = new HashMap();
+ copyBuffer = new ArrayList();
+ } catch (InvalidMidiDataException e) {}
+ // Sends sequence to GUI.
+ if (gui != null) gui.setSequence(seq);
+ }
+
+ /**
+ * 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;
- 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);
- }
- }
+ 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);
}
-// 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();
-
- // 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();
+ 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)) {
onMsg = (ShortMessage)on.getMessage();
iOff = noteOffs.iterator();
while(iOff.hasNext()) {
}
}
- tracks[i].remove(on);
+ track.remove(on);
+ MooNote mn;
if (off != null) {
- tracks[i].add(new MooNote(on, off));
+ mn = new MooNote(on, off);
} else {
- tracks[i].add(new MooNote(on));
+ mn = new MooNote(on, new MidiEvent((ShortMessage)on.getMessage().clone(), on.getTick() + 48));
}
+ track.add(mn);
+ newMooNotes.add(mn);
iOn.remove();
}
}
+ if (quantize) quantize(newMooNotes, SIXTEENTH_NOTE, true, true);
+ return newMooNotes;
+ }
- /*
- Collections.sort(track[i].events, new Comparator() {
- public int compare(Object o1, Object o2) {
- return ((MidiEvent)o2).getTick() - ((MidiEvent)o1).getTick();
- }
- });
+ /**
+ * Loads a MIDI sequence from the given file.
+ * @param filename the filename to use
+ */
+ public static boolean load(String file) {
+ // Loads sequence from file
+ filename = file;
+ try {seq = MidiSystem.getSequence(new File(filename));}
+ catch (Exception e) {return false;}
+ edited = false;
- // Searches the sequence for NoteOn events
- MidiEvent noteOn, noteOff = null, nextEvent;
- MidiMessage nextMsg;
- ShortMessage shortMsg;
+ Track[] tracks = seq.getTracks();
+ emptyTracks = new ArrayList();
+ trackMute = new HashMap();
+ trackSolo = new HashMap();
+ copyBuffer = new ArrayList();
- for (int i = 0; i < tracks.length; i++) {
- for (int j = 0; j < tracks[i].size(); j++) {
- noteOn = tracks[i].get(j);
- if (noteOn.getMessage().getStatus() == ShortMessage.NOTE_ON) {
- // Finds the corresponding NoteOff event
- for (int k = j + 1; k < tracks[i].size(); k++) {
- nextEvent = tracks[i].get(k);
- nextMsg = nextEvent.getMessage();
- if (nextMsg instanceof ShortMessage) {
- shortMsg = (ShortMessage) nextMsg;
- if (shortMsg.getCommand() == ShortMessage.NOTE_OFF && shortMsg.getChannel() == ((ShortMessage)noteOn.getMessage()).getChannel() && shortMsg.getData1() == ((ShortMessage)noteOn.getMessage()).getData1()) {
- noteOff = nextEvent;
- break;
- }
- }
- }
- // Replaces the NoteOn event with a MooNote, if possible with the corresponding NoteOff event
- tracks[i].remove(noteOn);
- if (noteOff != null) {
- tracks[i].add(new MooNote(noteOn, noteOff));
- } else {
- tracks[i].add(new MooNote(noteOn));
- }
+ // 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);
+
+ // Converts tracks.
+ for (int i = 0; i < tracks.length; i++) {
+ convertTrack(tracks[i], false);
+ }
+
// Sends sequence to GUI and sequencer, then returns
if (gui != null) gui.setSequence(seq);
try {
}
/**
- * Saves the current sequence to the given filename
- * @param file the filename to use
+ * Quantizes the given list of MIDI events
+ * @param notes a list of the notes to quantize
+ * @param resolution the note size to round each note to
+ * @param location whether the quantize should affect the location of the note
+ * @param duration whether the quantize should affect the duration of the note
*/
- public static void saveAs(String file) {
- try {
- MidiSystem.write(seq, 1, new File(filename));
- } catch (IOException e) {}
- filename = file;
- gui.setStatus("Saved " + file);
+ public static void quantize(List notes, int resolution, boolean location, boolean duration) {
+ // Math.round(mn.getTick() / ticksPerSixteenth);
+ }
+
+ /**
+ * Loads the user preferences.
+ */
+ public static void loadPreferences() {
+
+ }
+
+ /**
+ * Saves the user preferences.
+ */
+ public static void savePreferences() {
+
+ }
+
+ /**
+ * Prompts the user .
+ */
+ public static boolean promptOnUnsavedChanges() {
+ if (!edited) return false;
+ int exitOption = JOptionPane.showConfirmDialog(gui,
+ "The current sequence has been edited, but not saved.\nDo you wish to continue anyway?",
+ "File not saved - continue?",
+ JOptionPane.OK_CANCEL_OPTION,
+ JOptionPane.WARNING_MESSAGE);
+ if (exitOption == JOptionPane.CANCEL_OPTION || exitOption == JOptionPane.CLOSED_OPTION) return true;
+ return false;
}
/**
* Saves the current sequence to the previously given filename.
*/
- public static void save() {
- saveAs(filename);
+ public static boolean save() {
+ if (filename == null) return false;
+ else {
+ saveAs(filename);
+ return true;
+ }
+ }
+
+ /**
+ * Saves the current sequence to the given filename
+ * @param file the filename to use
+ */
+ public static boolean saveAs(String file) {
+ try {
+ MidiSystem.write(seq, 1, new File(file));
+ filename = file;
+ edited = false;
+ gui.setStatus("Saved " + file);
+ return true;
+ } catch (IOException e) {
+ gui.setStatus("Failed in saving " + file);
+ return false;
+ }
}
/**
* Releases all reserved devices and exits the program.
*/
public static void quit() {
+ if (gui != null) {
+ if (promptOnUnsavedChanges()) return;
+ }
+ savePreferences();
if (sequencer.isOpen()) sequencer.close();
if (synthesizer.isOpen()) synthesizer.close();
System.exit(0);
}
-}
\ No newline at end of file
+
+ /**
+ * A Ccmparator for sorting lists of MidiEvents.
+ */
+ public static class MidiEventComparator implements Comparator {
+ public int compare(Object o1, Object o2) {
+ int diff = (int)(((MidiEvent)o1).getTick() - ((MidiEvent)o2).getTick());
+ if (diff != 0 || !(((MidiEvent)o1).getMessage() instanceof ShortMessage) || !(((MidiEvent)o2).getMessage() instanceof ShortMessage)) return diff;
+ return (((ShortMessage)((MidiEvent)o1).getMessage()).getData1() - ((ShortMessage)((MidiEvent)o2).getMessage()).getData1());
+ }
+ }
+
+ /**
+ * The thread that updates the GUI during playback.
+ */
+ public static class PlayThread extends Thread {
+ public void run() {
+ // Updates the GUI with the current tick position.
+ gui.update(sequencer.getTickPosition());
+
+ // Puts the thread to sleep for as long as it takes
+ // the sequencer to reach the next sixteenth.
+ try {
+ //sleep((long)((15000 / getTempo()) * (tickDiff / ticksPerSixteenth)));
+ sleep (10);
+ } catch (InterruptedException e) {
+ Moosique.stop();
+ }
+ }
+ }
+
+ /**
+ * A listener for detecting the end of the sequence.
+ */
+ public static class SongEndListener implements MetaEventListener {
+ public void meta(MetaMessage event) {
+ if (event.getType() == 47)
+ // End of sequence
+ stop();
+ }
+ }
+}