private static Receiver receiver;
private static MidiChannel[] channels;
private static MidiChannel activeChannel;
- private static MidiEvent[] timeSignatures, tempoChanges;
- private static ArrayList copyBuffer, emptyTracks;
+ private static ArrayList copyBuffer, emptyTracks, timeSignatures, tempoChanges;
private static Map trackMute = new HashMap();
private static Map trackSolo = new HashMap();
private static Thread player;
- private static String filename;
+ private static File file = null;
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.
* loads a sequence and creates the GUI.
*/
public static void main (String[] args) {
- System.out.println("\nMoosique version 1.0\n");
+ out("\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 (args[i].equals("-m")) initSound = 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();
+
+ // 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.");
+ out("Failed, quitting.");
System.exit(1);
}
- System.out.println("Done");
+ out("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, creating new sequence");
+ if (!load(new File(fileArg))) {
+ out("Failed, creating new sequence");
clearSequence();
} else {
- System.out.println("Done");
+ out("Done");
}
} else {
// Otherwise creates a new empty one.
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {}
- gui = new MooGUI(seq);
- System.out.println("Done");
+ gui = new MooGUI(seq, file);
+ out("Done");
} else {
System.out.print("Playing...");
play();
while (sequencer.isRunning()) {}
- System.out.println("Done");
+ out("Done");
quit();
}
}
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
* 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[] getPositionForTick(long ticks) {
+ public static int[] getPositionForTicks(long ticks) {
/*
int measures, beats, ticks;
for (int i = 0; i < timeSignatures.length; i++) {
}
/**
- * Returns the tempo of the current sequence.
- * @return the tick position
+ * Returns the tempo in the given tick position.
+ * @param tick the tick position for which to return the tempo
+ * @return the tempo at the specified tick position
*/
- public static int getTempo() {
- return 120;
- // if (tempoMsg == null) return 0;
+ public static int getTempo(long tick) {
+ if (tempoChanges.size() == 0) return 120;
+ MidiEvent tempoEvent = (MidiEvent)tempoChanges.get(0);
+ if (tempoChanges.size() > 1) {
+ for (int i = 1; i < tempoChanges.size(); i++) {
+ MidiEvent nextTempoEvent = (MidiEvent)tempoChanges.get(i);
+ if (nextTempoEvent.getTick() < tick && nextTempoEvent.getTick() > tempoEvent.getTick())
+ tempoEvent = nextTempoEvent;
+ }
+ }
+ return decodeTempo(((MetaMessage)tempoEvent.getMessage()).getData());
}
/**
}
/**
- * Returns the tempo of the current sequence.
- * @return the tick position
+ * Returns the time signature in the given tick position.
+ * @param tick the tick position for which to return the time signature
+ * @return an array of two integers where [0] is the numerator and [1] the denominator
*/
- public static int[] getTimeSig() {
+ public static int[] getTimeSig(long tick) {
int[] ts = {4, 4};
- return ts;
- // if (timeSigMsg == null) return 0;
+ if (timeSignatures.size() == 0) return ts;
+ MidiEvent timeSigEvent = (MidiEvent)timeSignatures.get(0);
+ if (timeSignatures.size() > 1) {
+ for (int i = 1; i < timeSignatures.size(); i++) {
+ MidiEvent nextTimeSigEvent = (MidiEvent)timeSignatures.get(i);
+ if (nextTimeSigEvent.getTick() < tick && nextTimeSigEvent.getTick() > timeSigEvent.getTick())
+ timeSigEvent = nextTimeSigEvent;
+ }
+ }
+ return decodeTimeSig(((MetaMessage)timeSigEvent.getMessage()).getData());
}
/**
// timeSigMsg
}
+ /**
+ * Sets the solo setting of the given track.
+ * @param on true for solo, false for not
+ */
public static void setTrackSolo(Track track, boolean on){
trackSolo.put(track, new Boolean(on));
}
+ /**
+ * Sets the mute setting of the given track.
+ * @param on true for mute, false for not
+ */
public static void setTrackMute(Track track, boolean on){
trackMute.put(track, new Boolean(on));
}
+ /**
+ * Sets the current playback volume.
+ * @param volume the volume, between 0 and 1
+ */
+ public void setVolume(long volume) {
+ for (int i = 0; i < channels.length; i++) {
+ channels[i].controlChange(7, (int)(volume * 127.0));
+ }
+ }
+
+
+
+
+
+
+
+
+ /* ***
+ ** ENCODING / DECODING METHODS **
+ *** */
+
+
+
+
+
+
+
+
+ /**
+ * Returns the byte array for the given tempo.
+ * @param tempo the tempo in beats per minute
+ * @return an array of bytes representing the given tempo
+ */
+ public static byte[] encodeTempo(int tempo) {
+ int microSecsPerQuarter = 60000000 / tempo;
+ byte[] b = new byte[3];
+ b[0] = (byte)(microSecsPerQuarter / 65536);
+ b[1] = (byte)((microSecsPerQuarter - (b[0] * 65536)) / 256);
+ b[2] = (byte)(microSecsPerQuarter - (b[0] * 65536) - (b[1] * 256));
+ return b;
+ }
+
+ /**
+ * Returns the tempo for the given byte array.
+ * @param an array of three bytes representing the tempo
+ * @return the tempo in beats per minute
+ */
+ public static int decodeTempo(byte[] bytes) {
+ return 60000000 / (bytes[0] * 65536 + bytes[1] * 256 + bytes[2]); // bytes[0] & 0xFF ???
+ }
+
+ /**
+ * Returns the byte array for the given time signature.
+ * @param numerator the numerator of the time signature
+ * @param denominator the denominator of the time signature
+ * @return an array of bytes representing the given time signature
+ */
+ public static byte[] encodeTimeSig(int numerator, int denominator) {
+ byte[] b = {
+ (byte)numerator,
+ (byte)(Math.log(denominator) / Math.log(2)),
+ (byte)96,
+ (byte)8
+ };
+ return b;
+ }
+ /**
+ * Returns the time signature for the given byte array.
+ * @param an array of four bytes representing the time signature
+ * @return an array of two integers where [0] is the numerator and [1] the denominator
+ */
+ public static int[] decodeTimeSig(byte[] bytes) {
+ int[] t = {
+ (int)bytes[0],
+ (int)(1 << bytes[1])
+ };
+ return t;
+ }
+
}
}
-
// Disables input to volatile components
// gui.disable();
// Creates the visualisation thread and starts it.
- player = new Thread () {
- public void run() {
- while(sequencer.isRunning()) {
- // 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();
- }
- }
- Moosique.stop();
- }
- };
+ player = new PlayThread();
player.start();
}
* 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 {
+ // Creates a new sequence.
seq = new Sequence(Sequence.PPQ, DEFAULT_RESOLUTION, DEFAULT_TRACKS);
- sequencer.setSequence(seq);
- filename = null;
+ Track[] tracks = seq.getTracks();
+
+ // Creates messages for default tempo (120) and time signature (4/4).
+ 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) {}
+
+ // Adds them to track 0.
+ 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");
+
+ file = null;
emptyTracks = new ArrayList();
+ timeSignatures = new ArrayList();
+ tempoChanges = new ArrayList();
trackSolo = new HashMap();
trackMute = new HashMap();
copyBuffer = new ArrayList();
} catch (InvalidMidiDataException e) {}
- // Sends sequence to GUI.
+ // Sends the sequence to the GUI.
if (gui != null) gui.setSequence(seq);
}
+
+ /**
+ * 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) {}
+
+ // 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 void convertTrack(Track track) {
+ 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);
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;
+ if (!(on instanceof MooNote)) {
+ 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;
+ }
+
}
-
- }
- track.remove(on);
- if (off != null) {
- track.add(new MooNote(on, off));
- } else {
- track.add(new MooNote(on, new MidiEvent((ShortMessage)on.getMessage().clone(), on.getTick() + 48)));
+ track.remove(on);
+ MooNote mn;
+ if (off != null) {
+ mn = new MooNote(on, off);
+ } else {
+ mn = new MooNote(on, new MidiEvent((ShortMessage)on.getMessage().clone(), on.getTick() + 48));
+ }
+ track.add(mn);
+ newMooNotes.add(mn);
+ iOn.remove();
}
- iOn.remove();
}
+ if (quantize) quantize(newMooNotes, SIXTEENTH_NOTE, true, true);
+ return newMooNotes;
}
/**
* Loads a MIDI sequence from the given file.
* @param filename the filename to use
*/
- public static boolean load(String file) {
+ public static boolean load(File loadFile) {
// Loads sequence from file
- filename = file;
- try {
- seq = MidiSystem.getSequence(new File(filename));
- } catch (InvalidMidiDataException e) {
- return false;
- } catch (IOException e) {
- return false;
- }
+ try {seq = MidiSystem.getSequence(loadFile);}
+ catch (Exception e) {return false;}
+ file = loadFile;
edited = false;
Track[] tracks = seq.getTracks();
emptyTracks = new ArrayList();
+ timeSignatures = new ArrayList();
+ tempoChanges = new ArrayList();
trackMute = new HashMap();
trackSolo = new HashMap();
copyBuffer = new ArrayList();
if (event.getMessage().getStatus() == MetaMessage.META) {
metaMsg = (MetaMessage)event.getMessage();
switch(metaMsg.getType()) {
- case 81: tc.add(event); break;
- case 88: ts.add(event);
+ case 81: tempoChanges.add(event); break;
+ case 88: timeSignatures.add(event);
}
}
}
- // timeSignatures = ts.toArray(timeSignatures);
- // tempoChanges = tc.toArray(tempoChanges);
// Converts tracks.
for (int i = 0; i < tracks.length; i++) {
- convertTrack(tracks[i]);
+ convertTrack(tracks[i], false);
}
// Sends sequence to GUI and sequencer, then returns
return true;
}
+ /**
+ * 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 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 .
*/
* Saves the current sequence to the previously given filename.
*/
public static boolean save() {
- if (filename == null) return false;
+ if (file == null) return false;
else {
- saveAs(filename);
+ saveAs(file);
return true;
}
}
* Saves the current sequence to the given filename
* @param file the filename to use
*/
- public static boolean saveAs(String file) {
+ public static boolean saveAs(File saveFile) {
try {
- MidiSystem.write(seq, 1, new File(file));
- filename = file;
+ MidiSystem.write(seq, 1, saveFile);
+ file = saveFile;
edited = false;
- gui.setStatus("Saved " + file);
+ gui.setStatus("Saved " + file.getAbsolutePath());
return true;
} catch (IOException e) {
- gui.setStatus("Failed in saving " + file);
+ gui.setStatus("Failed in saving " + file.getAbsolutePath());
return false;
}
}
+ /**
+ * Prints the given string to the System output.
+ */
+ private static void out(String text) {
+ System.out.println(text);
+ }
+
/**
* Releases all reserved devices and exits the program.
*/
if (gui != null) {
if (promptOnUnsavedChanges()) return;
}
+ savePreferences();
if (sequencer.isOpen()) sequencer.close();
if (synthesizer.isOpen()) synthesizer.close();
System.exit(0);
}
/**
- * A Comparator for sorting lists of MidiEvents.
+ * A Ccmparator for sorting lists of MidiEvents.
*/
public static class MidiEventComparator implements Comparator {
public int compare(Object o1, Object o2) {
- return (int)(((MidiEvent)o1).getTick() - ((MidiEvent)o2).getTick());
+ 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();
}
}
}
projects / moosique.git / blobdiff