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/*
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* Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import javax.sound.midi.InvalidMidiDataException;
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import javax.sound.midi.MetaEventListener;
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import javax.sound.midi.MetaMessage;
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import javax.sound.midi.MidiEvent;
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import javax.sound.midi.MidiSystem;
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import javax.sound.midi.Sequence;
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import javax.sound.midi.Sequencer;
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import javax.sound.midi.ShortMessage;
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import javax.sound.midi.Track;
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/**
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* @test
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* @bug 4427890
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* @run main/othervm TickLength
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* @summary Sequencer.getTickLength() and Sequence.getTickLength() report the
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* wrong length
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*/
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public class TickLength implements MetaEventListener {
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private Sequence theSequence;
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private Sequencer theSequencer;
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public TickLength() {
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this.initMidiCompoments();
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System.out.println("Got Sequencer "+theSequencer);
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theSequence = this.generateSequence();
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try {
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theSequencer.setSequence(theSequence);
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}
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catch(Exception e) {
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System.out.println(this.getClass()+"\tCannot set sequence to sequencer ("+e+")");
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return;
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}
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}
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public void start() {
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theSequencer.start();
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}
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/*
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instantiate the necessary midi components
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*/
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private boolean initMidiCompoments() {
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try {
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theSequencer = MidiSystem.getSequencer();
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}
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catch(Exception e) {
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System.out.println(this.getClass()+"\tSequencer Device not supported"+e+")");
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return false;
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}
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try {
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theSequencer.open();
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}
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catch(Exception e) {
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System.out.println(this.getClass()+"Cannot open Sequencer Device");
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return false;
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}
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if(!theSequencer.addMetaEventListener(this)) {
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System.out.println(this.getClass()+"\tCould not register MetaEventListener - there will be problems with scrolling! ");
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return false;
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}
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return true;
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}
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static int lastTick = 0;
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private Sequence generateSequence() {
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MidiEvent dummyMidiEvent;
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ShortMessage dummyShortMessage;
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Sequence dummySequence = null;
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Track[] allTracks ;
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Track theTrack;
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try {
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dummySequence = new Sequence(Sequence.PPQ,1500);
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}
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catch(InvalidMidiDataException e) {
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System.out.println("O o "+e);
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}
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dummySequence.createTrack();
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allTracks = dummySequence.getTracks();
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theTrack = allTracks[0];
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lastTick = 0;
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for(int i=0;i<20; i++) {
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theTrack.add(this.createShortMidiEvent(ShortMessage.NOTE_ON, 2, 30+i, 100,100+1000*i));
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theTrack.add(this.createMetaMidiEvent(1,"start",100+1000*i));
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lastTick = (1000*i)+600;
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theTrack.add(this.createShortMidiEvent(ShortMessage.NOTE_OFF, 2, 30+i, 100, lastTick));
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theTrack.add(this.createMetaMidiEvent(1,"end",lastTick));
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}
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return dummySequence;
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}
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/*
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A method to create a short midi event (sound)
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*/
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public MidiEvent createShortMidiEvent(int theCommand, int theChannel, int theData1, int theData2, long theTime) {
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ShortMessage dummyShortMessage;
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MidiEvent dummyMidiEvent;
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try {
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dummyShortMessage = new ShortMessage();
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dummyShortMessage.setMessage(theCommand, theChannel, theData1, theData2);
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dummyMidiEvent = new MidiEvent(dummyShortMessage,theTime);
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}
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catch (Exception e) {
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System.out.println(this.getClass()+"\t"+e);
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return null;
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}
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return dummyMidiEvent;
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}
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/*
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A method to create a meta midi event (used in meta() method)
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*/
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public MidiEvent createMetaMidiEvent(int theType, String theData1, long theTime) {
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MetaMessage dummyMetaMessage;
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MidiEvent dummyMidiEvent;
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try {
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dummyMetaMessage = new MetaMessage();
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dummyMetaMessage.setMessage(theType, theData1.getBytes(), theData1.length());
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dummyMidiEvent = new MidiEvent(dummyMetaMessage,theTime);
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}
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catch (Exception e) {
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System.out.println(e);
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return null;
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}
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return dummyMidiEvent;
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}
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/*
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the method is activated by each meta midi event
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it puts out the actual tick position, as well as the WRONG total tick length and the RIGHT
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tick length using the work around by dividing the total length by 64
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*/
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public void meta(MetaMessage p1) {
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if(p1.getType() ==47) {
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return;
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}
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System.out.println("getTickPosition:\t"+theSequencer.getTickPosition()
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+"\t Sequencer.getTickLength:\t"+theSequencer.getTickLength()
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+"\tReal Length:\t"+lastTick
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+"\t Sequence.getTickLength:\t"+theSequence.getTickLength()
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//(theSequencer.getTickLength()/64));
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);
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}
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public void checkLengths() throws Exception {
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System.out.println("Sequencer.getTickLength() = "+theSequencer.getTickLength());
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System.out.println("Sequence.getTickLength() = "+theSequence.getTickLength());
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long diff = theSequencer.getTickLength() - theSequence.getTickLength();
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if (diff > 100 || diff < -100) {
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throw new Exception("Difference too large! Failed.");
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}
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System.out.println("Passed");
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}
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public static void main(String[] args) throws Exception {
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if (!hasSequencer()) {
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return;
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}
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TickLength tlt = new TickLength();
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//tlt.start();
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tlt.checkLengths();
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}
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static boolean hasSequencer() {
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try {
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Sequencer seq = MidiSystem.getSequencer();
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if (seq != null) {
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seq.open();
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seq.close();
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return true;
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}
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} catch (Exception e) {}
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System.out.println("No sequencer available! Cannot execute test.");
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return false;
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}
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}
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