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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

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 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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import javax.sound.midi.Instrument;

import javax.sound.midi.InvalidMidiDataException;

import javax.sound.midi.MetaEventListener;

import javax.sound.midi.MetaMessage;

import javax.sound.midi.MidiEvent;

import javax.sound.midi.MidiSystem;

import javax.sound.midi.Sequence;

import javax.sound.midi.Sequencer;

import javax.sound.midi.ShortMessage;

import javax.sound.midi.Track;

/**

 * @test

 * @bug 4347135

 * @summary MIDI MetaMessage callback inconsistent

 * @run main/othervm MetaCallback

 */

public class MetaCallback implements MetaEventListener {

    static ShortMessage MidiMsg3(int a, int b, int c) {

        try {

            ShortMessage msg = new ShortMessage();

            msg.setMessage((byte)a,(byte)b,(byte)c);

            return msg;

        } catch(InvalidMidiDataException ex) {

            throw new RuntimeException();

        }

    }

    //Synthesizer synth;

    Instrument[] instruments;

    Sequencer sequencer;

    Sequence sequence;

    Track track;

    public static int TOTAL_COUNT = 100;

    int metaCount = 0;

    boolean finished = false;

    MetaCallback() throws Exception {

        sequencer=MidiSystem.getSequencer();

        sequence=new Sequence(Sequence.PPQ,240);

        track=sequence.createTrack();

        sequencer.addMetaEventListener(this);

        byte[] data = new byte[1];

        track.add(new MidiEvent(MidiMsg3(ShortMessage.NOTE_ON+0,45,100),0));

        track.add(new MidiEvent(MidiMsg3(ShortMessage.NOTE_ON+0,45,0),0 + 240));

        int c;

        for(c=0; c < TOTAL_COUNT; c++) {

            data[0]=(byte)(c+1);

            MetaMessage meta = new MetaMessage();

            meta.setMessage(1, data, 1); // type, data, length

            track.add(new MidiEvent(meta,c*20));

        }

        track.add(new MidiEvent(MidiMsg3(ShortMessage.NOTE_ON+9,45,100),c*20));

        track.add(new MidiEvent(MidiMsg3(ShortMessage.NOTE_ON+9,45,0),c*20 + 10));

        sequencer.setSlaveSyncMode(Sequencer.SyncMode.INTERNAL_CLOCK);

        sequencer.setMasterSyncMode(Sequencer.SyncMode.INTERNAL_CLOCK);

        sequencer.open();

        sequencer.setSequence(sequence);

        sequencer.setTempoInBPM(100);

        System.out.println("Starting playback...");

        this.start();

        while (!finished && sequencer.getTickPosition() < sequencer.getTickLength()) {

            System.out.println("Tick "+sequencer.getTickPosition()+"...");

            Thread.sleep(1000);

        }

        System.out.println("Stopping playback...");

        this.stop();

        if (metaCount != TOTAL_COUNT) {

            throw new Exception("Expected "+TOTAL_COUNT+" callbacks, but got "+metaCount+"!");

        }

    }

    void start() {sequencer.start();}

    void stop() {sequencer.stop();}

    public void meta(MetaMessage msg) {

        System.out.println(""+metaCount+": got "+msg);

        if (msg.getType() == 0x2F) {

            finished = true;

        } else if (msg.getData().length > 0 && msg.getType() == 1) {

            metaCount++;

        }

    }

    public static void main(String[] argv) throws Exception {

        if (hasSequencer()) {

            new MetaCallback();

            System.out.println("Test passed");

        }

    }

    static boolean hasSequencer() {

        try {

            Sequencer seq = MidiSystem.getSequencer();

            if (seq != null) {

                seq.open();

                seq.close();

                return true;

            }

        } catch (Exception e) {}

        System.out.println("No sequencer available! Cannot execute test.");

        return false;

    }

}