Examples of javax.sound.midi.MidiMessage

javax.sound.midi.MidiMessage
idi.org>http://www.midi.org).
The base MidiMessage class provides access to three types of information about a MIDI message:
- The messages's status byte
- The total length of the message in bytes (the status byte plus any data bytes)
- A byte array containing the complete message
MidiMessage includes methods to get, but not set, these values. Setting them is a subclass responsibility.
The MIDI standard expresses MIDI data in bytes. However, because Java^TM uses signed bytes, the Java Sound API uses integers instead of bytes when expressing MIDI data. For example, the {@link #getStatus()} method ofMidiMessage returns MIDI status bytes as integers. If you are processing MIDI data that originated outside Java Sound and now is encoded as signed bytes, the bytes can can be converted to integers using this conversion:
{@code int i = (int)(byte & 0xFF)}
If you simply need to pass a known MIDI byte value as a method parameter, it can be expressed directly as an integer, using (for example) decimal or hexadecimal notation. For instance, to pass the "active sensing" status byte as the first argument to ShortMessage's {@link ShortMessage#setMessage(int) setMessage(int)}method, you can express it as 254 or 0xFE. @see Track @see Sequence @see Receiver @author David Rivas @author Kara Kytle

            List<MidiEvent> midiEventList = (List<MidiEvent>)timeMap.get(time);
            if (midiEventList != null)
            {
                for (MidiEvent event : midiEventList)
                {
                    MidiMessage message = event.getMessage(); 
                    if ((message.getMessage().length >= 2) && (message.getMessage()[1] == 0x51) && (message instanceof MetaMessage)) 
                    {
                        int bpm = parseMicrosecondsPerBeat((MetaMessage)message, time);
                        timeFactor = TimeFactor.getTimeFactor(sequence, bpm);
                        System.out.println("TimeFactor is "+timeFactor);
                    }

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            }


            for (Track track : tracks) {
                xhtml.startElement("p");
                for (int i = 0; i < track.size(); i++) {
                    MidiMessage message = track.get(i).getMessage();
                    if (message instanceof MetaMessage) {
                        MetaMessage meta = (MetaMessage) message;
                        // Types 1-15 are reserved for text events
                        if (meta.getType() >= 1 && meta.getType() <= 15) {
                            // FIXME: What's the encoding?

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            }


            for (Track track : tracks) {
                xhtml.startElement("p");
                for (int i = 0; i < track.size(); i++) {
                    MidiMessage message = track.get(i).getMessage();
                    if (message instanceof MetaMessage) {
                        MetaMessage meta = (MetaMessage) message;
                        // Types 1-15 are reserved for text events
                        if (meta.getType() >= 1 && meta.getType() <= 15) {
                            // FIXME: What's the encoding?

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public class MidiEventTest extends TestCase {
    public void test_getMessage() {
        byte[] bt = new byte[] {1, 2, 3, 4};
        MidiMessage1 message = new MidiMessage1(bt);
        MidiEvent event = new MidiEvent(message, 10L);
        MidiMessage mm = event.getMessage();
        assertEquals(1, mm.getMessage()[0]);
        assertEquals(2, mm.getMessage()[1]);
        assertEquals(3, mm.getMessage()[2]);
        assertEquals(4, mm.getMessage()[3]);
        bt[0] = 10;
        bt[1] = 20;
        bt[2] = 30;
        bt[3] = 40;
        /*
         * values change
         */
        assertEquals(10, mm.getMessage()[0]);
        assertEquals(20, mm.getMessage()[1]);
        assertEquals(30, mm.getMessage()[2]);
        assertEquals(40, mm.getMessage()[3]);
        byte[] nb = mm.getMessage();
        nb[0] = 45;
        nb[1] = -12;
        nb[2] = 90;
        nb[3] = 14;
        /*
         * values don't change
         */
        assertEquals(10, mm.getMessage()[0]);
        assertEquals(20, mm.getMessage()[1]);
        assertEquals(30, mm.getMessage()[2]);
        assertEquals(40, mm.getMessage()[3]);
        
        MidiEvent event1 = new MidiEvent(null, 10L);
        assertNull(event1.getMessage());
    }

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        assertEquals(1, seq2.getTracks()[0].size());
        assertEquals(0, seq2.getTracks()[0].ticks());
        
        assertEquals(0, seq2.getTracks()[345].get(0).getTick());
        
        MidiMessage mes = seq2.getTracks()[345].get(0).getMessage();
        assertEquals(3, mes.getLength());
        assertEquals(255, mes.getStatus());
        assertEquals(3, mes.getMessage().length);
        assertEquals(-1, mes.getMessage()[0]);
        assertEquals(47, mes.getMessage()[1]);
        assertEquals(0, mes.getMessage()[2]);
    }

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    public MfiEvent[] getIntervalMfiEvents(int mfiTrackNumber) {


        int interval = 0;
        MidiEvent midiEvent = midiEvents.get(midiEventIndex);


        MidiMessage midiMessage = midiEvent.getMessage();
        if (midiMessage instanceof ShortMessage) {
            // note
            interval = retrieveAdjustedDelta(mfiTrackNumber, midiEvent.getTick());
        } else if (midiMessage instanceof MetaMessage && ((MetaMessage) midiMessage).getType() == 81) {
            // tempo

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    public int getDelta(int mfiTrackNumber) {


        int delta = 0;
        MidiEvent midiEvent = midiEvents.get(midiEventIndex);


        MidiMessage midiMessage = midiEvent.getMessage();
        if (midiMessage instanceof ShortMessage) {
            // note
            delta = retrieveAdjustedDelta(mfiTrackNumber, midiEvent.getTick()); 
        } else if (midiMessage instanceof MetaMessage && ((MetaMessage) midiMessage).getType() == 81) {
            // tempo

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                        return c1 - c2;
                    }
                }
                /** */
                int getChannel(MidiEvent e) {
                    MidiMessage m = e.getMessage(); 
                    if (m instanceof ShortMessage) {
                        return ((ShortMessage) m).getChannel();
                    } else {
                        return -1;
                    }

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    public MidiEvent getNoteOffMidiEvent() throws NoSuchElementException {


        ShortMessage shortMessage = null;


        MidiEvent midiEvent = midiEvents.get(midiEventIndex);
        MidiMessage midiMessage = midiEvent.getMessage();
        if (midiMessage instanceof ShortMessage) {
            shortMessage = (ShortMessage) midiMessage;
        } else {
            throw new IllegalStateException("current is not ShortMessage");
        }

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        int interval = 0;
        int track = 0;
        MidiEvent midiEvent = midiTrack.get(midiEventIndex);


        MidiMessage midiMessage = midiEvent.getMessage();
        if (midiMessage instanceof ShortMessage) {
            // note
            ShortMessage shortMessage = (ShortMessage) midiMessage;
            int channel = shortMessage.getChannel();

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