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

     * @param data1 the first data byte
     */
    public void addEvent(int command, int data1)
    {
        try {
            ShortMessage message = new ShortMessage();
            message.setMessage(command, currentTrack, data1);
            MidiEvent event = new MidiEvent(message, getTrackTimer());
            track[currentTrack].add(event);
        } catch (InvalidMidiDataException e)
        {
            // We've kept a good eye on the data.  This exception won't happen.

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     * @param data2 the second data byte
     */
    public void addEvent(int command, int data1, int data2)
    {
        try {
            ShortMessage message = new ShortMessage();
            message.setMessage(command, currentTrack, data1, data2);
            MidiEvent event = new MidiEvent(message, getTrackTimer());
            track[currentTrack].add(event);
        } catch (InvalidMidiDataException e)
        {
            // We've kept a good eye on the data.  This exception won't happen.

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     */
    public void addNoteEvent(int data1, int data2, int data3, long duration, boolean addNoteOn, boolean addNoteOff)
    {
        try {
            if (addNoteOn) {
                ShortMessage message = new ShortMessage();
                message.setMessage(ShortMessage.NOTE_ON, currentTrack, data1, data2);
                MidiEvent event = new MidiEvent(message, getTrackTimer());
                track[currentTrack].add(event);
            }


            advanceTrackTimer(duration);


            if (addNoteOff) {
                ShortMessage message2 = new ShortMessage();
                message2.setMessage(ShortMessage.NOTE_OFF, currentTrack, data1, data3);
                MidiEvent event2 = new MidiEvent(message2, getTrackTimer());
                track[currentTrack].add(event2);
            }
        } catch (InvalidMidiDataException e)
        {

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    /**
     * test method getChannel() of class ShortMessage
     *
     */
    public void test_getChannel() throws Exception {
        ShortMessage message = new ShortMessage();
        assertEquals(0, message.getChannel());


        byte[] bt = new byte[] {23, 16, 35};
        ShortMessage1 message1 = new ShortMessage1(bt);
        assertEquals(7, message1.getChannel());
        bt[0] = 15;
        /*
         * value change
         */
        assertEquals(15, message1.getChannel());
        
        ShortMessage1 message2 = new ShortMessage1(null);
        assertEquals(0, message2.getChannel());


        message.setMessage(249);
        assertEquals(9, message.getChannel());


        message.setMessage(250, 14, 62);
        assertEquals(10, message.getChannel());


        message.setMessage(234, 15, 14, 62);
        assertEquals(15, message.getChannel());


    }

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    /**
     * test method getCommand() of class ShortMessage
     *
     */
    public void test_getCommand() throws Exception {
        ShortMessage message = new ShortMessage();
        assertEquals(144, message.getCommand());


        byte[] bt = new byte[] {23, 16, 35};
        ShortMessage1 message1 = new ShortMessage1(bt);
        assertEquals(16, message1.getCommand());
        bt[0] = 4;
        /*
         * value change
         */
        assertEquals(0, message1.getCommand());


        ShortMessage1 message2 = new ShortMessage1(null);
        assertEquals(0, message2.getCommand());


        message.setMessage(249);
        assertEquals(240, message.getCommand());


        message.setMessage(250, 14, 62);
        assertEquals(240, message.getCommand());


        message.setMessage(234, 15, 14, 62);
        assertEquals(224, message.getCommand());
    }

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    /**
     * test method getLength() of class ShortMessage
     *
     */
    public void test_getLength() throws Exception {
        ShortMessage message = new ShortMessage();
        assertEquals(3, message.getLength());


        ShortMessage1 message1 = new ShortMessage1(new byte[] {23, 16, 35});
        assertEquals(3, message1.getLength());


        ShortMessage1 message2 = new ShortMessage1(null);
        assertEquals(0, message2.getLength());


        message.setMessage(249);
        assertEquals(1, message.getLength());


        message.setMessage(250, 14, 62);
        assertEquals(1, message.getLength());


        message.setMessage(234, 15, 14, 62);
        assertEquals(3, message.getLength());


        message.setMessage(214, 15, 14, 62);
        assertEquals(2, message.getLength());
    }

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    /**
     * test method getStatus() of class ShortMessage
     *
     */
    public void test_getStatus() throws Exception {
        ShortMessage message = new ShortMessage();
        assertEquals(144, message.getStatus());


        byte[] bt = new byte[] {23, 16, 35};
        ShortMessage1 message1 = new ShortMessage1(bt);
        assertEquals(23, message1.getStatus());
        bt[0] = 84;
        /*
         * value change
         */
        assertEquals(84, message1.getStatus());


        ShortMessage1 message2 = new ShortMessage1(null);
        assertEquals(0, message2.getStatus());


        message.setMessage(249);
        assertEquals(249, message.getStatus());


        message.setMessage(250, 14, 62);
        assertEquals(250, message.getStatus());


        message.setMessage(234, 15, 14, 62);
        assertEquals(239, message.getStatus());
    }

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     * test methods getData1() and getData2() of 
     * class ShortMessage
     *
     */
    public void test_getData1_2() throws Exception {
        ShortMessage message = new ShortMessage();
        assertEquals(64, message.getData1());
        assertEquals(127, message.getData2());


        byte[] bt = new byte[] { 23, 16, 35 };
        ShortMessage1 message1 = new ShortMessage1(bt);
        assertEquals(16, message1.getData1());
        assertEquals(35, message1.getData2());
        bt[1] = 84;
        bt[2] = -16;
        /*
         * values change
         */
        assertEquals(84, message1.getData1());
        assertEquals(240, message1.getData2());


        ShortMessage1 message11 = new ShortMessage1(new byte[] { 23, 16 });
        assertEquals(16, message11.getData1());
        assertEquals(0, message11.getData2());


        ShortMessage1 message12 = new ShortMessage1(new byte[] { 23 });
        assertEquals(0, message12.getData1());
        assertEquals(0, message12.getData2());


        ShortMessage1 message2 = new ShortMessage1(null);
        assertEquals(0, message2.getData1());
        assertEquals(0, message2.getData2());


        message.setMessage(249);
        assertEquals(0, message.getData1());
        assertEquals(0, message.getData2());


        message.setMessage(250, 14, 62);
        assertEquals(0, message.getData1());
        assertEquals(0, message.getData2());


        message.setMessage(234, 15, 14, 62);
        assertEquals(14, message.getData1());
        assertEquals(62, message.getData2());


        message.setMessage(198, 15, 14, 62);
        assertEquals(14, message.getData1());
        assertEquals(0, message.getData2());
        
        ShortMessage1 message15 = new ShortMessage1(new byte[] {-16, 16, 35});
        assertEquals(16, message15.getData1());
        assertEquals(35, message15.getData2());
    }

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    /**
     * tests method clone() of class ShortMessage
     *
     */
    public void test_clone1() {
        ShortMessage message = new ShortMessage();
        assertTrue(message.clone() != message);
        assertEquals(message.clone().getClass(), message.getClass());
        ShortMessage tmessage;
        tmessage = (ShortMessage) message.clone();
        assertEquals(message.getLength(), tmessage.getLength());
        assertEquals(message.getMessage().length, tmessage.getMessage().length);
        assertEquals(message.getData1(), tmessage.getData1());
        assertEquals(message.getData2(), tmessage.getData2());
        assertEquals(message.getChannel(), tmessage.getChannel());
        assertEquals(message.getCommand(), tmessage.getCommand());
        assertEquals(message.getStatus(), tmessage.getStatus());
        if (message.getMessage().length != 0) {
            for (int i = 0; i < message.getMessage().length; i++) {
                assertEquals(message.getMessage()[i], tmessage.getMessage()[i]);
            }
        }
    }

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    public void test_clone2() {
        byte[] bt = new byte[] {1, 2, 3, 4, 5};
        ShortMessage1 message = new ShortMessage1(bt);
        assertTrue(message.clone() != message);
        
        ShortMessage tmessage;
        tmessage = (ShortMessage) message.clone();
        assertEquals(message.getLength(), tmessage.getLength());
        assertEquals(message.getMessage().length, tmessage.getMessage().length);
        assertEquals(message.getData1(), tmessage.getData1());
        assertEquals(message.getData2(), tmessage.getData2());
        assertEquals(message.getChannel(), tmessage.getChannel());
        assertEquals(message.getCommand(), tmessage.getCommand());
        assertEquals(message.getStatus(), tmessage.getStatus());
        if (message.getMessage().length != 0) {
            for (int i = 0; i < message.getMessage().length; i++) {
                assertEquals(message.getMessage()[i], tmessage.getMessage()[i]);
            }
        }
        bt[0] = 10;
        bt[1] = 20;
        bt[2] = 30;
        bt[3] = 40;
        bt[4] = 50;
        /*
         * 'real' ShortMessage change, but 'clone' not
         */
        //'real'
        assertEquals(10, message.getChannel());
        assertEquals(0, message.getCommand());
        assertEquals(20, message.getData1());
        assertEquals(30, message.getData2());
        assertEquals(10, message.getStatus());
        assertEquals(10, message.getMessage()[0]);
        assertEquals(20, message.getMessage()[1]);
        assertEquals(30, message.getMessage()[2]);
        assertEquals(40, message.getMessage()[3]);
        assertEquals(50, message.getMessage()[4]);
        //'clone'
        assertEquals(1, tmessage.getChannel());
        assertEquals(0, tmessage.getCommand());
        assertEquals(2, tmessage.getData1());
        assertEquals(3, tmessage.getData2());
        assertEquals(1, tmessage.getStatus());
        assertEquals(1, tmessage.getMessage()[0]);
        assertEquals(2, tmessage.getMessage()[1]);
        assertEquals(3, tmessage.getMessage()[2]);
        assertEquals(4, tmessage.getMessage()[3]);
        assertEquals(5, tmessage.getMessage()[4]);
    }

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