예제 #1
0
  public void go() {
    setUpGui();

    try {

      Sequencer sequencer = MidiSystem.getSequencer();
      sequencer.open();
      // make a sequencer and open
      sequencer.addControllerEventListener(m1, new int[] {127});
      Sequence seq = new Sequence(Sequence.PPQ, 4);
      Track track = seq.createTrack();

      int r = 0;
      for (int i = 0; i < 300; i += 4) {

        r = (int) ((Math.random() * 50) + 1);
        track.add(makeEvent(144, 1, r, 100, i));
        track.add(makeEvent(176, 1, 127, 0, i));
        track.add(makeEvent(128, 1, r, 100, i + 2));
      } // end loop

      sequencer.setSequence(seq);
      sequencer.start();
      sequencer.setTempoInBPM(120);
    } catch (Exception ex) {
      ex.printStackTrace();
    }
  } // close method
예제 #2
0
 public boolean saveMidiFile(File file) {
   try {
     int[] fileTypes = MidiSystem.getMidiFileTypes(sequence);
     if (fileTypes.length == 0) {
       System.out.println("Can't save sequence");
       return false;
     } else {
       if (MidiSystem.write(sequence, fileTypes[0], file) == -1) {
         throw new IOException("Problems writing to file");
       }
       return true;
     }
   } catch (SecurityException ex) {
     ex.printStackTrace();
     return false;
   } catch (Exception ex) {
     ex.printStackTrace();
     return false;
   }
 }
예제 #3
0
  public void setUpMidi() {
    try {
      sequencer = MidiSystem.getSequencer();
      sequencer.open();
      sequence = new Sequence(Sequence.PPQ, 4);
      track = sequence.createTrack();
      sequencer.setTempoInBPM(120);

    } catch (Exception e) {
      e.printStackTrace();
    }
  } // close method
예제 #4
0
  public boolean open() {

    try {
      if (synthesizer == null) {
        if ((synthesizer = MidiSystem.getSynthesizer()) == null) {
          System.out.println("getSynthesizer() failed!");
          return false;
        }
      }
      synthesizer.open();
      sequencer = MidiSystem.getSequencer();
      sequencer.addMetaEventListener(new ProcessMeta());

      sequence = new Sequence(Sequence.PPQ, 10);
    } catch (Exception ex) {
      System.out.println("midi exception 1 ");
      ex.printStackTrace();
      return false;
    }

    System.out.println("midi opening");

    Soundbank sb = synthesizer.getDefaultSoundbank();
    if (sb != null) {
      instruments = synthesizer.getDefaultSoundbank().getInstruments();
      synthesizer.loadInstrument(instruments[0]);
    }
    MidiChannel midiChannels[] = synthesizer.getChannels();
    numChannels = midiChannels.length;
    channels = new ChannelData[midiChannels.length];
    if (channels.length == 0) return false;
    for (int i = 0; i < channels.length; i++) {
      channels[i] = new ChannelData(midiChannels[i], i);
    }
    cc = channels[0];
    return true;
  }
    public void actionPerformed(ActionEvent ev) {

      try {

        // make (and open) a sequencer, make a sequence and track

        Sequencer sequencer = MidiSystem.getSequencer();
        sequencer.open();

        sequencer.addControllerEventListener(myPanel, new int[] {127});
        Sequence seq = new Sequence(Sequence.PPQ, 4);
        Track track = seq.createTrack();

        // now make two midi events (containing a midi message)

        for (int i = 0; i < 100; i += 4) {

          int rNum = (int) ((Math.random() * 50) + 1);
          if (rNum < 38) { // so now only do it if num <38 (75% of the time)

            track.add(makeEvent(144, 1, rNum, 100, i));

            track.add(makeEvent(176, 1, 127, 0, i));

            track.add(makeEvent(128, 1, rNum, 100, i + 2));
          }
        } // end loop

        // add the events to the track
        // add the sequence to the sequencer, set timing, and start

        sequencer.setSequence(seq);

        sequencer.start();
        sequencer.setTempoInBPM(220);
      } catch (Exception ex) {
        ex.printStackTrace();
      }
    } // close actionperformed
예제 #6
0
  public void los() {
    guiErstellen();

    try {

      // einen Sequencer erzeugen (und öffnen),
      // eine Sequence und einen Track erzeugen

      Sequencer sequencer = MidiSystem.getSequencer();
      sequencer.open();
      sequencer.addControllerEventListener(ml, new int[] {127});
      Sequence seq = new Sequence(Sequence.PPQ, 4);
      Track track = seq.createTrack();

      // jetzt werden MidiEvents (die eine
      // MidiMessage enthalten) erzeugt

      int r = 0;
      for (int i = 0; i < 60; i += 4) {
        r = (int) ((Math.random() * 50) + 1);
        track.add(eventErzeugen(144, 1, r, 100, i));
        track.add(eventErzeugen(176, 1, 127, 0, i));
        track.add(eventErzeugen(128, 1, r, 100, i + 2));
      } // Ende der for-Schleife

      // Hinzufügen der Events zum Track und der Sequence
      // zum Sequencer, Setzen der Zeiten und Starten

      sequencer.setSequence(seq);
      sequencer.start();
      sequencer.setTempoInBPM(120);

    } catch (Exception ex) {
      ex.printStackTrace();
    }
  } // Methode los schließen