Examples of javax.sound.midi.MidiEvent

javax.sound.midi.MidiEvent
MIDI events contain a MIDI message and a corresponding time-stamp expressed in ticks, and can represent the MIDI event information stored in a MIDI file or a {@link Sequence} object. The duration of a tick is specified by the timing information contained in the MIDI file or Sequence object.
In Java Sound, MidiEvent objects are typically contained in a {@link Track}, and Tracks are likewise contained in a Sequence. @author David Rivas @author Kara Kytle

        metaMessage.setMessage(0x7f,    // �V�[�P���T�[�ŗL���^�C�x���g
                               data,
                               data.length);


        return new MidiEvent[] {
            new MidiEvent(metaMessage, context.getCurrent())
        };
    }

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        shortMessage.setMessage(ShortMessage.PROGRAM_CHANGE,
                                channel,
                                context.getProgram(channel),
                                0);
        return new MidiEvent[] {
            new MidiEvent(shortMessage, context.getCurrent())
        };
    }

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        int mpq = 500000;
        int seqres = seq.getResolution();
        long lasttick = 0;
        long curtime = 0;
        while (true) {
            MidiEvent selevent = null;
            int seltrack = -1;
            for (int i = 0; i < tracks.length; i++) {
                int trackpos = trackspos[i];
                Track track = tracks[i];
                if (trackpos < track.size()) {
                    MidiEvent event = track.get(trackpos);
                    if (selevent == null || event.getTick() < selevent.getTick()) {
                        selevent = event;
                        seltrack = i;
                    }
                }
            }

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        // -----------------------------
        // Write each event in the track
        // -----------------------------
        for(int i=0; i<size; i++) {
            MidiEvent event = track.get(i);


            int status;
            int eventtype;
            int metatype;
            int data1, data2;
            int length;
            byte data[] = null;
            ShortMessage shortMessage = null;
            MetaMessage  metaMessage  = null;
            SysexMessage sysexMessage = null;


            // get the tick
            // $$jb: this gets easier if we change all system-wide time to delta ticks
            eventTick = event.getTick();
            deltaTick = event.getTick() - currentTick;
            currentTick = event.getTick();


            // get the status byte
            status = event.getMessage().getStatus();
            eventtype = getType( status );


            switch( eventtype ) {
            case ONE_BYTE:
                shortMessage = (ShortMessage) event.getMessage();
                data1 = shortMessage.getData1();
                bytesWritten += writeVarInt( deltaTick );


                if(status!=runningStatus) {
                    runningStatus=status;
                    tddos.writeByte(status);  bytesWritten += 1;
                }
                tddos.writeByte(data1);   bytesWritten += 1;
                break;


            case TWO_BYTE:
                shortMessage = (ShortMessage) event.getMessage();
                data1 = shortMessage.getData1();
                data2 = shortMessage.getData2();


                bytesWritten += writeVarInt( deltaTick );
                if(status!=runningStatus) {
                    runningStatus=status;
                    tddos.writeByte(status);  bytesWritten += 1;
                }
                tddos.writeByte(data1);   bytesWritten += 1;
                tddos.writeByte(data2);   bytesWritten += 1;
                break;


            case SYSEX:
                sysexMessage = (SysexMessage) event.getMessage();
                length     = sysexMessage.getLength();
                data       = sysexMessage.getMessage();
                bytesWritten += writeVarInt( deltaTick );


                // $$jb: 04.08.99: always write status for sysex
                runningStatus=status;
                tddos.writeByte( data[0] ); bytesWritten += 1;


                // $$jb: 10.18.99: we don't maintain length in
                // the message data for SysEx (it is not transmitted
                // over the line), so write the calculated length
                // minus the status byte
                bytesWritten += writeVarInt( (data.length-1) );


                // $$jb: 10.18.99: now write the rest of the
                // message
                tddos.write(data, 1, (data.length-1));
                bytesWritten += (data.length-1);
                break;


            case META:
                metaMessage = (MetaMessage) event.getMessage();
                length    = metaMessage.getLength();
                data      = metaMessage.getMessage();
                bytesWritten += writeVarInt( deltaTick );


                // $$jb: 10.18.99: getMessage() returns the

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        int mpq = 500000;
        int seqres = seq.getResolution();
        long lasttick = 0;
        long curtime = 0;
        while (true) {
            MidiEvent selevent = null;
            int seltrack = -1;
            for (int i = 0; i < tracks.length; i++) {
                int trackpos = trackspos[i];
                Track track = tracks[i];
                if (trackpos < track.size()) {
                    MidiEvent event = track.get(trackpos);
                    if (selevent == null || event.getTick() < selevent.getTick()) {
                        selevent = event;
                        seltrack = i;
                    }
                }
            }

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    System.out.println("la"); //Each time we got an event we print this
  }
  
  public static MidiEvent makeEvent(int comd, int chan, int one, int two, int tick)
  {
    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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                    } // switch sys-ex or meta
                    break;
                default:
                    throw new InvalidMidiDataException("Invalid status byte: " + status);
                } // switch
                track.add(new MidiEvent(message, tick));
            } // while
        } catch (ArrayIndexOutOfBoundsException e) {
            throw new EOFException("invalid MIDI file");
        }
    }

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                                                 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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                                                  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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                                                        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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