import javax.sound.midi.*;
+import javax.swing.*;
import java.io.*;
/**
- * Moosique - The trackers approach to MIDI
+ * Moosique - The MIDI Tracker
*
- * Main class that handles initiation, IO and sound FX.
+ * Main class that handles initiation, IO and sound.
*
- * @author Andersson, Andreen, Lanneskog, Pehrson
- * @version 1
+ * @author Einar Pehrson
*/
public class Moosique {
- private static MooGUI gui;
- private static MooSequence seq;
- private static String filename;
+ protected static MooGUI gui;
+ protected static Sequence seq;
+
+ protected static Sequencer sequencer;
+ protected static Synthesizer synthesizer;
+ protected static MidiChannel[] channels;
+ protected static MidiChannel activeChannel;
+
+ protected static String filename;
+ protected static long position;
/**
- * Runs the application.
+ * Starts the application.
*/
public static void main (String[] args) {
+ System.out.println("\nMoosique version 1.0\n");
+ // 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();
+ sequencer.getTransmitter().setReceiver(synthesizer.getReceiver());
+ channels = synthesizer.getChannels();
+ setActiveChannel(0);
+ } catch (MidiUnavailableException e) {
+ System.out.println("Failed, quitting.");
+ quit();
+ }
+ System.out.println("Done");
+
+ //If a filename is given as the command-line argument, attempts to load a sequence from the file.
+ System.out.print("Loading MIDI sequence...");
+ if (args.length == 1) {
+ if (!load(args[0])) clearSequence();
+ } else {
+ // Otherwise creates a new empty one.
+ clearSequence();
+ }
+ System.out.println("Done");
+ // Sets up channels and GUI.
+ System.out.print("Creating GUI...");
+ gui = new MooGUI(seq);
+ System.out.println("Done");
}
/**
* Returns a pointer to the current sequence.
* @return the current sequence
*/
- public static MooSequence getSequence() {
+ public static Sequence getSequence() {
+ return seq;
+ }
+
+ /**
+ * Returns a pointer to the MidiChannels of the selected synthesizer.
+ * @return the available MidiChannels
+ */
+ public static MidiChannel[] getChannels() {
+ return channels;
+ }
+
+ /**
+ * Returns a pointer to the currently active MidiChannel.
+ * @return the active MidiChannel
+ */
+ public static MidiChannel getActiveChannel() {
+ return activeChannel;
+ }
+
+ /**
+ * Sets the currently active MidiChannel.
+ * @param channel the number of the MidiChannel to activate
+ */
+ public static void setActiveChannel(int channel) {
+ activeChannel = channels[channel];
+ }
+
+ /**
+ * Replaces the current sequence with a new one, holding three empty tracks.
+ */
+ public static void clearSequence() {
+ // Creates sequence.
+ try {
+ seq = new Sequence(Sequence.PPQ, 96, 3);
+ } catch (InvalidMidiDataException e) {}
+ // Sends sequence to GUI.
+ if (gui != null) gui.setSequence(seq);
}
* Starts playback of the current sequence.
*/
public static void play() {
-
+ try {
+ sequencer.setSequence(seq);
+ sequencer.setTickPosition(position);
+ } catch (InvalidMidiDataException e) {}
+ sequencer.start();
}
/**
* Pauses playback of the current sequence.
*/
public static void pause() {
-
+ sequencer.stop();
+ }
+
+ /**
+ * Resumes playback of the current sequence.
+ */
+ public static void resume() {
+ sequencer.start();
}
/**
* Stops playback of the current sequence.
*/
public static void stop() {
-
+ sequencer.stop();
+ sequencer.setTickPosition(position);
}
/**
* Rewinds the current sequence the given number of measures.
* @param measures the number of measures to rewind
*/
- public static void rewind(int measures) {
-
+ public static long getPosition() {
+ return position;
+ }
+
+ /**
+ * Rewinds the current sequence the given number of measures.
+ * @param measures the number of measures to rewind
+ */
+ public static void setPosition(long ticks) {
+ position = ticks;
+ }
+
+ /**
+ * Rewinds the current sequence the given number of measures.
+ * @param measures the number of measures to rewind
+ */
+ public static void rewind(long ticks) {
+ position -= ticks;
}
/**
* Fast forwards the current sequence the given number of measures.
* @param measures the number of measures to fast forward
*/
- public static void forward(int measures) {
-
+ public static void forward(long ticks) {
+ position += ticks;
}
/**
* Loads the MooSequence in the given file.
* @param filename the filename to use
*/
- public static void load(String filename) throws IOException {
-
+ 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) {
+ JOptionPane.showMessageDialog(null, "Error 404", "File Not Found", JOptionPane.ERROR_MESSAGE);
+ return false;
+ }
+
+ // Sends sequence to GUI
+ if (gui != null) gui.setSequence(seq);
+
+ // Searches the sequence for NoteOn events
+ Track[] tracks = seq.getTracks();
+ MidiEvent noteOn, noteOff = null, nextEvent;
+ MidiMessage nextMsg;
+ ShortMessage shortMsg;
+ 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() instanceof ShortMessage) {
+ if (((ShortMessage)noteOn.getMessage()).getCommand() == 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));
+ }
+ }
+ }
+ }
+ }
+ return true;
}
/**
* @param filename the filename to use
*/
public static void saveAs(String filename) throws IOException {
-
+ MidiSystem.write(seq, 1, new File(filename));
}
/**
* Saves the current sequence to the previously given filename.
*/
public static void save() throws IOException {
-
+ saveAs(filename);
}
/**
- * 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 (sequencer.isOpen()) sequencer.close();
+ if (synthesizer.isOpen()) synthesizer.close();
+ System.exit(0);
}
-}
+}
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