import javax.sound.midi.*;
import java.io.*;
+import javax.swing.*;
+import java.util.*;
/**
- * Moosique - The trackers approach to MIDI
- * blaha
- * Main class that handles initiation, IO and sound FX.
+ * Moosique - The MIDI Tracker
*
- * @author Andersson, Andreen, Lanneskog, Pehrson
- * @version 1
+ * Main class that handles initiation, IO and sound.
+ *
+ * @author Einar Pehrson
*/
public class Moosique {
private static MooGUI gui;
- private static MooSequence seq;
+ 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 ArrayList 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;
/**
- * Runs the application.
+ * 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 (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 {
+ sequencer = MidiSystem.getSequencer();
+ System.out.print(".");
+ sequencer.open();
+ synthesizer = MidiSystem.getSynthesizer();
+ System.out.print(".");
+ synthesizer.open();
+ receiver = synthesizer.getReceiver();
+ sequencer.getTransmitter().setReceiver(receiver);
+ channels = synthesizer.getChannels();
+ setActiveChannel(0);
+ } catch (MidiUnavailableException e) {
+ System.out.println("Failed, quitting.");
+ System.exit(1);
+ }
+ System.out.println("Done");
+
+ //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");
+ clearSequence();
+ } else {
+ System.out.println("Done");
+ }
+ } else {
+ // Otherwise creates a new empty one.
+ clearSequence();
+ }
+
+ // Builds GUI, unless n-flag is set.
+ if (makeGUI) {
+ System.out.print("Building GUI.");
+ try {
+ UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+ } catch (Exception e) {}
+ gui = new MooGUI(seq);
+ System.out.println("Done");
+ } else {
+ System.out.print("Playing...");
+ play();
+ while (sequencer.isRunning()) {}
+ System.out.println("Done");
+ quit();
+ }
+ }
+
+
+
+
+
+
+
+ /* ***
+ ** 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 editing position of the sequencer.
+ * @return the tick position
+ */
+ public static long getEditPosition() {
+ return editPosition;
+ }
+
+ /**
+ * Returns the GUI.
+ * @return the GUI
+ */
+ public static MooGUI getGUI() {
+ 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[] getPositionForTick(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 a pointer to the current sequence.
+ * Returns the current sequence.
* @return the current sequence
*/
- public static MooSequence getSequence() {
+ public static Sequence getSequence() {
+ return seq;
+ }
+
+ /**
+ * Returns the current sequencer.
+ * @return the current sequencer
+ */
+ public static Sequencer getSequencer() {
+ return sequencer;
+ }
+
+ /**
+ * Returns the tempo of the current sequence.
+ * @return the tick position
+ */
+ public static int getTempo() {
+ return 120;
+ // if (tempoMsg == null) return 0;
+ }
+
+ /**
+ * Calculates the tick position in the current sequence for the given position (measures, beats, ticks).
+ * @return the tick position.
+ */
+ 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 tempo of the current sequence.
+ * @return the tick position
+ */
+ public static int[] getTimeSig() {
+ int[] ts = {4, 4};
+ return ts;
+ // if (timeSigMsg == null) return 0;
+ }
+
+ /**
+ * Returns true if the current sequence has been edited.
+ * @return the tick position
+ */
+ public static boolean isEdited() {
+ return edited;
+ }
+
+ /**
+ * Returns whether the given track should be drawn
+ * @return true if the given track should be drawn
+ */
+ public static boolean shouldBeDrawn(Track track) {
+ if (drawEmptyTracks) return true;
+ else return (!emptyTracks.contains(track));
+ }
+
+
+
+
+
+
+
+
+ /* ***
+ ** MUTATOR METHODS **
+ *** */
+
+
+
+
+
+
+
+
+ /**
+ * Fast forwards the current sequence the given number of measures.
+ * @param measures the number of measures to fast forward
+ */
+ public static void forward(long ticks) {
+ editPosition += ticks;
+ }
+
+ /**
+ * Rewinds the current sequence the given number of measures.
+ * @param measures the number of measures to rewind
+ */
+ public static void rewind(long ticks) {
+ editPosition -= ticks;
+ }
+
+ /**
+ * Sets the currently active MidiChannel.
+ * @param channel the number of the MidiChannel to activate
+ */
+ public static void setActiveChannel(int channel) {
+ activeChannel = channels[channel];
+ }
+
+ /**
+ * Sets whether empty tracks should be drawn
+ * @param state true if empty tracks should be drawn
+ */
+ public static void setDrawEmptyTracks(boolean state) {
+ drawEmptyTracks = state;
+ }
+
+ /**
+ * Sets the current sequence as edited, which implies prompts when loading a new sequence.
+ */
+ public static void setEdited() {
+ edited = true;
+ }
+
+ /**
+ * Sets the current editing position of the sequencer.
+ * @param ticks the tick position
+ */
+ public static void setEditPosition(long ticks) {
+ editPosition = ticks;
+ }
+
+ /**
+ * Sets the current editing position of the sequencer.
+ * @param ticks the tick position
+ */
+ public static void setTempo(int bpm) {
+ // tempoMsg
+ }
+
+ /**
+ * Sets the current editing position of the sequencer.
+ * @param ticks the tick position
+ */
+ public static void setTimeSig(int bpm) {
+ // timeSigMsg
+ }
+ public static void setTrackSolo(Track track, boolean on){
+ trackSolo.put(track, new Boolean(on));
+ }
+
+ public static void setTrackMute(Track track, boolean on){
+ trackMute.put(track, new Boolean(on));
}
+
+
+
+
+
+
+
+ /* ***
+ ** PLAYBACK METHODS **
+ *** */
+
+
+
+
+
+
+
+
/**
* Starts playback of the current sequence.
*/
public static void play() {
-
+ sequencer.setTickPosition(editPosition);
+ resume();
+ }
+
+ /**
+ * Resumes playback of the current sequence.
+ */
+ 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 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.start();
}
/**
* Pauses playback of the current sequence.
*/
public static void pause() {
-
+ if (sequencer.isRunning()) {
+ sequencer.stop();
+ }
+ if (player != null) player.interrupt();
}
/**
* Stops playback of the current sequence.
*/
public static void stop() {
-
+ if (sequencer.isRunning()) {
+ sequencer.stop();
+ }
+ sequencer.setTickPosition(editPosition);
+ if (player != null) player.interrupt();
+ gui.update((long)0);
}
+
+
+
+
+
+
+
+ /* ***
+ ** SYSTEM & IO METHODS **
+ *** */
+
+
+
+
+
+
+
+
/**
- * Rewinds the current sequence the given number of measures.
- * @param measures the number of measures to rewind
+ * Replaces the current sequence with a new one, holding three empty tracks.
*/
- public static void rewind(int measures) {
-
+ 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();
+ } catch (InvalidMidiDataException e) {}
+ // Sends sequence to GUI.
+ if (gui != null) gui.setSequence(seq);
}
/**
- * Fast forwards the current sequence the given number of measures.
- * @param measures the number of measures to fast forward
+ * Loads a MIDI sequence from the given file.
+ * @param filename the filename to use
*/
- public static void forward(int measures) {
-
+ 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;
+ }
+ edited = false;
+
+ Track[] tracks = seq.getTracks();
+ emptyTracks = new ArrayList();
+ trackMute = new HashMap();
+ trackSolo = new HashMap();
+
+ // 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();
+ if (noteOns.size() == 0) emptyTracks.add(tracks[i]);
+
+ // Sorts the note lists by tick position.
+ Comparator c = new NoteComparator();
+ 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();
+ 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, new MidiEvent((ShortMessage)on.getMessage().clone(), on.getTick() + 48)));
+ }
+ iOn.remove();
+ }
+ }
+ // Sends sequence to GUI and sequencer, then returns
+ if (gui != null) gui.setSequence(seq);
+ try {
+ sequencer.setSequence(seq);
+ } catch (InvalidMidiDataException e) {}
+ return true;
}
/**
- * Loads the MooSequence in the given file.
- * @param filename the filename to use
+ * Prompts the user .
*/
- public static void load(String filename) throws IOException {
-
+ 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 given filename
- * @param filename the filename to use
+ * Saves the current sequence to the previously given filename.
*/
- public static void saveAs(String filename) throws IOException {
-
+ public static boolean save() {
+ if (filename == null) return false;
+ else {
+ saveAs(filename);
+ return true;
+ }
}
/**
- * Saves the current sequence to the previously given filename.
+ * Saves the current sequence to the given filename
+ * @param file the filename to use
*/
- public static void save() throws IOException {
-
+ 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;
+ }
}
/**
- * Exports the current sequence to a standard MIDI file.
- * @param filename the filename to use
+ * Releases all reserved devices and exits the program.
*/
- public static void exportMIDI(String filename) throws IOException {
+ public static void quit() {
+ if (gui != null) {
+ if (promptOnUnsavedChanges()) return;
+ }
+ if (sequencer.isOpen()) sequencer.close();
+ if (synthesizer.isOpen()) synthesizer.close();
+ System.exit(0);
+ }
+ /**
+ * A Comparator for sorting lists of MidiEvents.
+ */
+ public static class NoteComparator implements Comparator {
+ public int compare(Object o1, Object o2) {
+ return (int)(((MidiEvent)o1).getTick() - ((MidiEvent)o2).getTick());
+ }
}
}
projects / moosique.git / blobdiff