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

  {
    MidiEvent event = null;    //Create a midi event and set it to null
    
    try
    {
      ShortMessage a = new ShortMessage();  //Create a new short message
      a.setMessage(comd, chan, one, two);    //Set the message according to what's passed in
      
      event = new MidiEvent(a, tick);      //Set the MidiEvent to contain a tick as well as our 
                          //short message
    }
    catch(Exception e)

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        // 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>>4)==11 ) {

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    }
  }


  private void addMelodyEvents(int channel) {
    try {
      ShortMessage sm=null;
      sm=new MessageWrapper(750);
      sm.setMessage(ShortMessage.NOTE_ON, channel, 64, 100);
      enqueueEvent(sm);


      sm=new MessageWrapper(0,true);
      sm.setMessage(ShortMessage.NOTE_OFF, channel, 64, 100);
      enqueueEvent(sm);


      sm=new MessageWrapper(500);
      sm.setMessage(ShortMessage.NOTE_ON, channel, 70, 100);
      enqueueEvent(sm);


      sm=new MessageWrapper(0,true);
      sm.setMessage(ShortMessage.NOTE_OFF, channel, 70, 100);
      enqueueEvent(sm);


      sm=new MessageWrapper(250);
      sm.setMessage(ShortMessage.NOTE_ON, channel, 70, 100);
      enqueueEvent(sm);


      sm=new MessageWrapper(0,true);
      sm.setMessage(ShortMessage.NOTE_OFF, channel, 70, 100);
      enqueueEvent(sm);


      sm=new MessageWrapper(1000);
      sm.setMessage(ShortMessage.NOTE_ON, channel, 67, 100);
      enqueueEvent(sm);


      sm=new MessageWrapper(0,true);
      sm.setMessage(ShortMessage.NOTE_OFF, channel, 67, 100);
      enqueueEvent(sm);
    } catch (Exception ex) {
      log.throwing(getClass().getName(),"failed to add melody events", ex);
    }
  }

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    setMidiOutDevice(dOut);
  }


  protected MidiThread() {
    if (CLOCK_MESSAGE==null) {
      CLOCK_MESSAGE=new ShortMessage();
      SYSTEM_RESET_MESSAGE=new ShortMessage();
      ALIVE_MESSAGE=new ShortMessage();
      try {
        CLOCK_MESSAGE.setMessage(ShortMessage.TIMING_CLOCK);
        SYSTEM_RESET_MESSAGE.setMessage(ShortMessage.SYSTEM_RESET);
        ALIVE_MESSAGE.setMessage(ShortMessage.ACTIVE_SENSING);
      } catch (Exception ex) {

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    return channel;
  }


  public boolean initTestMessages() {
      try {
      ShortMessage sm=new ShortMessage();
      sm.setMessage(ShortMessage.SYSTEM_RESET,0,0);
      enqueueEvent(sm);
      if (programNumber!=-1) {
        sm=new ShortMessage();
        sm.setMessage(ShortMessage.PROGRAM_CHANGE, programNumber, 0);
        enqueueEvent(sm);
      }
      switch (testMode) {
        case TEST_DRUMS: {
          addDrumEvents(channel);

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      return true;
    }


  public void emitNoteOn(int note) throws Exception {
    assertValidMidiValue(note, "note pitch");
    ShortMessage sm=new ShortMessage();
    try {
      sm.setMessage(ShortMessage.NOTE_ON, note, 100);
      enqueueEvent(sm);
    } catch (Exception ex) {
      log.throwing(getClass().getName(),"failed emitting note on", ex);
      throw ex;
    }

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    }
  }


  public void emitNoteOff(int note) {
    assertValidMidiValue(note, "note pitch");
    ShortMessage sm=new ShortMessage();
    try {
      sm.setMessage(ShortMessage.NOTE_OFF, note, 100);
      enqueueEvent(sm);
    } catch (Exception ex) {
      log.throwing(getClass().getName(),"failed emitting note off", ex);
    }
  }

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      throw new IllegalArgumentException("Value for "+valueName+" may range only from 0..127, "+val+" is therefore invalid");
    }
  }


  private void addDrumEvents(int channel) {
    ShortMessage sm;
    try {
      for (int i=0;i<30; i++) {
        sm=new MessageWrapper(250);
        sm.setMessage(ShortMessage.NOTE_ON, channel, 40+i, 100);
        enqueueEvent(sm);
        enqueueEvent(new MessageWrapper(50, true));


        sm=new ShortMessage();
        sm.setMessage(ShortMessage.NOTE_OFF, channel, 40+i, 100);
        enqueueEvent(sm);
      }
    } catch (Exception ex) {
      log.throwing(getClass().getName(),"failed to add drum events", ex);
    }

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  public void setProgramChange(int channel, int instrument)
  {
    if (midiReceiver != null)
    {
      ShortMessage message = MidiController.getProgramChange(channel, instrument);
      midiReceiver.send(message, 0);
    }
  }

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


    try
    {
      message.setMessage(ShortMessage.PROGRAM_CHANGE, channel, instrument, 0);
    }
    catch (InvalidMidiDataException e)
    {
      message = null;
    }

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