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

    public int getDuration() {


        int delta = 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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    public MidiEvent getNextMidiEvent() throws NoSuchElementException {


        ShortMessage shortMessage = null;


        MidiEvent midiEvent = midiTrack.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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    public MidiEvent getNoteOffMidiEvent() throws NoSuchElementException {


        ShortMessage shortMessage = null;


        MidiEvent midiEvent = midiTrack.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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        mfiContext.setMidiSequence(midiSequence);
            
        for (int i = 0; i < mfiContext.getSequenceSize(); i++) {
            MidiEvent midiEvent = mfiContext.getMidiEvent(i);
            
            MidiMessage midiMessage = midiEvent.getMessage();
            
            Track[] mfiTracks = mfiSequence.getTracks();
            int maxTracks = mfiTracks.length;
            
            String key = null;

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            if (divtype == Sequence.PPQ)
                curtime += ((tick - lasttick) * mpq) / seqres;
            else
                curtime = (long) ((tick * 1000000.0 * divtype) / seqres);
            lasttick = tick;
            MidiMessage msg = selevent.getMessage();
            if (msg instanceof MetaMessage) {
                if (divtype == Sequence.PPQ) {
                    if (((MetaMessage) msg).getType() == 0x51) {
                        byte[] data = ((MetaMessage) msg).getData();
                        mpq = ((data[0] & 0xff) << 16)

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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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            if (divtype == Sequence.PPQ)
                curtime += ((tick - lasttick) * mpq) / seqres;
            else
                curtime = (long) ((tick * 1000000.0 * divtype) / seqres);
            lasttick = tick;
            MidiMessage msg = selevent.getMessage();
            if (msg instanceof MetaMessage) {
                if (divtype == Sequence.PPQ)
                    if (((MetaMessage) msg).getType() == 0x51) {
                        byte[] data = ((MetaMessage) msg).getData();
                        mpq = ((data[0] & 0xff) << 16) | ((data[1] & 0xff) << 8) | (data[2] & 0xff);

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            // get a valid status byte from the beginning of the track.
            int status = 0;
            boolean endOfTrackFound = false;


            while (!trackFinished() && !endOfTrackFound) {
                MidiMessage message;


                int data1 = -1;         // initialize to invalid value
                int data2 = 0;


                // each event has a tick delay and then the event data.

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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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            // get a valid status byte from the beginning of the track.
            int status = 0;
            boolean endOfTrackFound = false;


            while (!trackFinished() && !endOfTrackFound) {
                MidiMessage message;


                int data1 = -1;         // initialize to invalid value
                int data2 = 0;


                // each event has a tick delay and then the event data.

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