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/*
* Copyright (c) 2003, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* 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
* accompanied this code).
*
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
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;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* @test
* @bug 4347135
* @summary MIDI MetaMessage callback inconsistent
* @key intermittent sound
* @run main/othervm/timeout=120 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;
volatile int metaCount = 0;
volatile boolean finished = false;
// On M1 Mac sometimes system notifies listener about the same message twice
static List<MetaMessage> received = Collections.synchronizedList(new ArrayList<>());
long startTimeMs;
MetaCallback() throws Exception {
startTimeMs = System.currentTimeMillis();
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();
sequencer.close();
}
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) {
if (!received.contains(msg)) {
received.add(msg);
} else {
// Add some additional debug output for the case of duplicate meta message
// The test will fail anyway at the end
System.out.println("Duplicate message received after getting "
+ received.size() + " messages.");
System.out.println("Sequencer in use: " + sequencer);
System.out.println("Time from test start: " +
(System.currentTimeMillis() - startTimeMs) + "ms");
Thread.dumpStack();
}
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;
}
}
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