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 TreeSet selection;
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;
* 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", true);
// Parses command-line arguments.
String fileArg = null;
}
// Acquires MIDI devices and connects them.
- System.out.print("Initializing MIDI devices.");
+ out("Initializing MIDI devices.", false);
try {
// Configures sequencer
sequencer = MidiSystem.getSequencer();
- System.out.print(".");
+ advanceStatus();
sequencer.open();
sequencer.addMetaEventListener(new SongEndListener());
// Configures synthesizer
synthesizer = MidiSystem.getSynthesizer();
- System.out.print(".");
+ advanceStatus();
synthesizer.open();
// Configures receiver, transmitter and channels.
channels = synthesizer.getChannels();
setActiveChannel(0);
} catch (MidiUnavailableException e) {
- System.out.println("Failed, quitting.");
+ out("Failed, quitting.", true);
System.exit(1);
}
- System.out.println("Done");
+ out("Done", true);
// 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");
+ out("Loading MIDI sequence from " + fileArg + "...", false);
+ if (!load(new File(fileArg))) {
+ out("Failed, creating new sequence", true);
clearSequence();
} else {
- System.out.println("Done");
+ out("Done", true);
}
} else {
// Otherwise creates a new empty one.
// Builds GUI, unless n-flag is set.
if (makeGUI) {
- System.out.print("Building GUI.");
+ out("Building GUI.", false);
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {}
- gui = new MooGUI(seq);
- System.out.println("Done");
+ gui = new MooGUI(seq, file);
+ out("Done", true);
} else {
- System.out.print("Playing...");
+ out("Playing...", false);
play();
while (sequencer.isRunning()) {}
- System.out.println("Done");
+ out("Done", true);
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.
+ * @param tickPosition the tick position for which to calculate the 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.
+ public static int[] getPositionForTicks(long tickPosition) {
+ int ticksPerBeat = seq.getResolution(), sigs = timeSignatures.size(), beatsPerMeasure = 4;
+ long measures = 0, beats = 0, ticks = 0;
+ if (sigs > 1) {
+ /*
+ Iterator it = timeSignatures.iterator();
+ MidiEvent lastTSEvent = (MidiEvent)it.next();
+ if (lastTSEvent.getTick() != 0) tickPos += (int)lastTSEvent.getTick();
+ while(it.hasNext()) {
+ MidiEvent nextTSEvent = (MidiEvent)it.next();
+ long tickDiff = nextTSEvent.getTick() - lastTSEvent.getTick();
+ ts = decodeTimeSig(((MetaMessage)lastTSEvent.getMessage()).getData());
+ beatsPerMeasure = ts[0] * (4 / ts[1]);
+ tickPos += ((beatsPerMeasure * measures + beats) * res + ticks);
+ }
+ */
+ } else {
+ if (sigs == 1) {
+ MidiEvent TSEvent = (MidiEvent)timeSignatures.get(0);
+ int[] ts = decodeTimeSig(((MetaMessage)TSEvent.getMessage()).getData());
+ beatsPerMeasure = ts[0] * (4 / ts[1]);
+ }
+ measures = tickPosition / (beatsPerMeasure * ticksPerBeat);
+ beats = (tickPosition - measures * beatsPerMeasure * ticksPerBeat) / ticksPerBeat;
+ ticks = tickPosition - measures * beatsPerMeasure * ticksPerBeat - beats * ticksPerBeat;
}
- */
- int[] pos = {1, 1, 1};
+ int[] pos = {(int)measures + 1, (int)beats + 1, (int)ticks + 1};
return pos;
}
}
/**
- * 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());
}
/**
* @return the tick position.
*/
public static long getTicksForPosition(int measures, int beats, int ticks) {
+ int res = seq.getResolution();
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.
+ switch (timeSignatures.size()) {
+ case 0:
+ tickPos = (4 * measures + beats) * res + ticks;
+ case 1:
+ MidiEvent TSEvent = (MidiEvent)timeSignatures.get(0);
+ int[] ts = decodeTimeSig(((MetaMessage)TSEvent.getMessage()).getData());
+ int beatsPerMeasure = ts[0] * (4 / ts[1]);
+ tickPos = (beatsPerMeasure * measures + beats) * res + ticks;
+ default:
+ Iterator it = timeSignatures.iterator();
+ MidiEvent lastTSEvent = (MidiEvent)it.next();
+ if (lastTSEvent.getTick() != 0) tickPos += (int)lastTSEvent.getTick();
+ while(it.hasNext()) {
+ MidiEvent nextTSEvent = (MidiEvent)it.next();
+ long tickDiff = nextTSEvent.getTick() - lastTSEvent.getTick();
+ ts = decodeTimeSig(((MetaMessage)lastTSEvent.getMessage()).getData());
+ beatsPerMeasure = ts[0] * (4 / ts[1]);
+ tickPos += ((beatsPerMeasure * measures + beats) * res + ticks);
+ }
}
- */
return tickPos;
}
/**
- * 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());
}
/**
+ /* ***
+ ** 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]);
+ }
+
+ /**
+ * 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)), // logarithm of denominator in base 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;
+ }
+
+
+
+
+
+
+
+
+ /* ***
+ ** SELECTION METHODS **
+ *** */
+
+
+
+
+
+
+
+
+ /**
+ * Returns the current selection.
+ * @return the current selection
+ */
+ public static TreeSet getSelection() {
+ return selection;
+ }
+
+ /**
+ * Selects the given note
+ * @param the note to select
+ */
+ public static void selectNote(MooNoteElement elem) {
+ selection.add(elem);
+ }
+
+ /**
+ * Deselects the given note
+ * @param the note to deselect
+ */
+ public static void deselectNote(MooNoteElement elem) {
+ selection.remove(elem);
+ }
+
+ /**
+ * Deselects all notes.
+ */
+ public static void deselectAllNotes() {
+ Iterator it = selection.iterator();
+ while(it.hasNext()) {
+ ((MooNoteElement)it.next()).deselect();
+ }
+ selection.clear();
+ }
+
+ /**
+ * Determines if the given MooNoteElement is the only one in the track view that is selected.
+ * @return if the given element is the only selected one
+ */
+ public static boolean isTheOnlySelected(MooNoteElement elem) {
+ Iterator it = selection.iterator();
+ while(it.hasNext()) {
+ if (!it.next().equals(elem)) return false;
+ }
+ return true;
+ }
+
+
+
+
+
+
+
+
/* ***
** PLAYBACK METHODS **
*** */
if (sequencer.isRunning()) {
sequencer.stop();
}
- if (player != null) player.interrupt();
+ player = null;
}
/**
sequencer.stop();
}
sequencer.setTickPosition(editPosition);
- if (player != null) player.interrupt();
+ player = null;
gui.update((long)0);
}
* 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;
- emptyTracks = new ArrayList();
- trackSolo = new HashMap();
- trackMute = new HashMap();
- copyBuffer = new ArrayList();
+ 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) {}
- // Sends sequence to GUI.
- if (gui != null) gui.setSequence(seq);
+
+ // 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));
}
/**
* 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));}
+ try {seq = MidiSystem.getSequence(loadFile);}
catch (Exception e) {return false;}
+ file = loadFile;
edited = false;
Track[] tracks = seq.getTracks();
- emptyTracks = new ArrayList();
- trackMute = new HashMap();
- trackSolo = new HashMap();
- copyBuffer = new ArrayList();
+ reinitializeVariables();
// 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);
+ case 81: tempoChanges.add(event); break;
+ case 88: timeSignatures.add(event);
}
}
}
- // timeSignatures = ts.toArray(timeSignatures);
- // tempoChanges = tc.toArray(tempoChanges);
+ Comparator c = new MidiEventComparator();
+ Collections.sort(tempoChanges, c);
+ Collections.sort(timeSignatures, c);
// Converts tracks.
for (int i = 0; i < tracks.length; i++) {
}
// Sends sequence to GUI and sequencer, then returns
- if (gui != null) gui.setSequence(seq);
+ if (gui != null) gui.setSequence(seq, file);
try {
sequencer.setSequence(seq);
} catch (InvalidMidiDataException e) {}
// Math.round(mn.getTick() / ticksPerSixteenth);
}
+ /**
+ * Reinitializes sequence-specific variables.
+ */
+ private static void reinitializeVariables() {
+ emptyTracks = new ArrayList();
+ timeSignatures = new ArrayList();
+ tempoChanges = new ArrayList();
+ trackSolo = new HashMap();
+ trackMute = new HashMap();
+ copyBuffer = new ArrayList();
+ selection = new TreeSet();
+ }
+
/**
* Loads the user preferences.
*/
}
/**
- * Prompts the user .
+ * Prompts the user to save any unsaved changes.
*/
public static boolean promptOnUnsavedChanges() {
if (!edited) return false;
* 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, boolean newLine) {
+ if (newLine) System.out.println(text);
+ else System.out.print(text);
+ }
+
+ /**
+ * Advances the current progress counter by printing a "." to the System output.
+ */
+ private static void advanceStatus() {
+ out(".", false);
+ }
+
/**
* Releases all reserved devices and exits the program.
*/
*/
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();
+ Thread currentThread = Thread.currentThread();
+ while(currentThread == player) {
+ gui.update(sequencer.getTickPosition());
+ try {
+ sleep(10);
+ } catch (InterruptedException e) {
+ Moosique.stop();
+ }
}
}
}
/**
- * A listener for detecting the end of the sequence.
+ * A listener for detecting the Meta event signifying 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