Examples of javax.sound.midi.ShortMessage

javax.sound.midi.ShortMessage
A ShortMessage contains a MIDI message that has at most two data bytes following its status byte. The types of MIDI message that satisfy this criterion are channel voice, channel mode, system common, and system real-time--in other words, everything except system exclusive and meta-events. The ShortMessage class provides methods for getting and setting the contents of the MIDI message.
A number of ShortMessage methods have integer parameters by which you specify a MIDI status or data byte. If you know the numeric value, you can express it directly. For system common and system real-time messages, you can often use the corresponding fields of ShortMessage, such as {@link #SYSTEM_RESET SYSTEM_RESET}. For channel messages, the upper four bits of the status byte are specified by a command value and the lower four bits are specified by a MIDI channel number. To convert incoming MIDI data bytes that are in the form of Java's signed bytes, you can use the conversion code given in the {@link MidiMessage} class description. @see SysexMessage @see MetaMessage @author David Rivas @author Kara Kytle @author Florian Bomers

  public static ShortMessage getNoteEvent(int channel, int note, int velocity)
  {
    if ((channel < 0) || (channel > 15) || (note < 0) || (note > 127) || (velocity < 0) || (velocity > 127))
      return null;
    
    ShortMessage message = new ShortMessage();


    try
    {
      if (velocity == 0)
        message.setMessage(ShortMessage.NOTE_OFF, channel, note, 0);
      else
        message.setMessage(ShortMessage.NOTE_ON, channel, note, velocity);
    }
    catch (InvalidMidiDataException e)
    {
      message = null;
    }

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    if ((midiTrans != null) && (keyPosition > 0))
    {
      midiTrans.addNote(0, keyPosition, 0x60, 100);
    }


    ShortMessage midiMessage = new ShortMessage();


    if (midiRec != null)
    {
      try
      {
        midiMessage.setMessage(ShortMessage.NOTE_ON, 0, keyPosition, 0x60);
        midiRec.send(midiMessage, 0);
      }
      catch (InvalidMidiDataException e1)
      {
      }

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        synth.unloadAllInstruments(synth.getDefaultSoundbank());
        synth.loadAllInstruments(soundbank);
        Receiver recv = synth.getReceiver();


        // Set volume to max and turn reverb off
        ShortMessage reverb_off = new ShortMessage();
        reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
        recv.send(reverb_off, -1);
        ShortMessage full_volume = new ShortMessage();
        full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
        recv.send(full_volume, -1);


        Random random = new Random(3485934583945l);


        // Create random timestamps
        long[] test_timestamps = new long[30];
        for (int i = 1; i < test_timestamps.length; i++) {
            test_timestamps[i] = i * 44100
                    + (int) (random.nextDouble() * 22050.0);
        }


        // Send midi note on message to synthesizer
        for (int i = 0; i < test_timestamps.length; i++) {
            ShortMessage midi_on = new ShortMessage();
            midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
            recv.send(midi_on,
                    (long) ((test_timestamps[i] / 44100.0) * 1000000.0));
        }


        // Measure timing from rendered audio

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  public static void main(String[] args) throws Exception {
    AudioSynthesizer synth = new SoftSynthesizer();
    Receiver recv = synth.getReceiver();
    assertTrue(recv != null);
    ShortMessage sm = new ShortMessage();
    sm.setMessage(ShortMessage.NOTE_OFF, 0, 64, 64);
        synth.open(new DummySourceDataLine(), null);
    recv.send(sm, -1);    
    synth.close();      
    try
    {

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    protected static MidiEvent createNoteOnEvent(int channel,
                                                 int pitch, int velocity,
                                                 long tick)
        throws InvalidMidiDataException {


        ShortMessage msg = new ShortMessage();
        msg.setMessage(0x90 + channel, pitch, velocity);
        MidiEvent evt = new MidiEvent(msg, tick);


        return evt;
    }

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    protected static MidiEvent createNoteOffEvent(int channel,
                                                  int pitch, int velocity,
                                                  long tick)
        throws InvalidMidiDataException {


        ShortMessage msg = new ShortMessage();
        msg.setMessage(0x80 + channel, pitch, velocity);
        MidiEvent evt = new MidiEvent(msg, tick);


        return evt;
    }

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    protected static MidiEvent createProgramChangeEvent(int channel,
                                                        int value,
                                                        long tick)
        throws InvalidMidiDataException {


        ShortMessage msg = new ShortMessage();
        msg.setMessage(0xC0 + channel, value, 0);
        MidiEvent evt = new MidiEvent(msg, tick);


        return evt;
    }

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              int controlNum,
              int value,
              long tick)
    throws InvalidMidiDataException{
    
    ShortMessage msg = new ShortMessage();
    msg.setMessage(0xB0 + channel, controlNum, value);
    MidiEvent evt = new MidiEvent(msg, tick);
    return evt;
  }

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            return;
        }


        // process a Controller or Mode Event
        if (eventInfo.getEvent() instanceof ShortMessage) {
            ShortMessage event = (ShortMessage)eventInfo.getEvent();
            int status = event.getStatus();


            // Controller and Mode events have status byte 0xBc, where
            // c is the channel they are sent on.
            if ((status & 0xF0) == 0xB0) {
                for (int i = 0; i < count; i++) {

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    }
        
    public  MidiEvent makeEvent(int comd, int chan, int one, int two, int tick) {
        MidiEvent event = null;
        try {
            ShortMessage a = new ShortMessage();
            a.setMessage(comd, chan, one, two);
            event = new MidiEvent(a, tick);
            
        } catch(Exception e) {
      e.printStackTrace(); 
    }

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