/*
* Copyright ( c ) 2002 , 2016 , 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
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*/
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
* @ key sound
* @ bug 4427890
* @ run main / othervm TickLength
* @ summary Sequencer . getTickLength ( ) and Sequence . getTickLength ( ) report the
* wrong length
*/
public class TickLength implements MetaEventListener {
private Sequence theSequence;
private Sequencer theSequencer;
public TickLength() {
this .initMidiCompoments();
System.out.println("Got Sequencer " +theSequencer);
theSequence = this .generateSequence();
try {
theSequencer.setSequence(theSequence);
}
catch (Exception e) {
System.out.println(this .getClass()+"\tCannot set sequence to sequencer (" +e+")" );
return ;
}
}
public void start() {
theSequencer.start();
}
/*
instantiate the necessary midi components
*/
private boolean initMidiCompoments() {
try {
theSequencer = MidiSystem.getSequencer();
}
catch (Exception e) {
System.out.println(this .getClass()+"\tSequencer Device not supported" +e+")" );
return false ;
}
try {
theSequencer.open();
}
catch (Exception e) {
System.out.println(this .getClass()+"Cannot open Sequencer Device" );
return false ;
}
if (!theSequencer.addMetaEventListener(this )) {
System.out.println(this .getClass()+"\tCould not register MetaEventListener - there will be problems with scrolling! " );
return false ;
}
return true ;
}
static int lastTick = 0 ;
private Sequence generateSequence() {
MidiEvent dummyMidiEvent;
ShortMessage dummyShortMessage;
Sequence dummySequence = null ;
Track[] allTracks ;
Track theTrack;
try {
dummySequence = new Sequence(Sequence.PPQ,1500 );
}
catch (InvalidMidiDataException e) {
System.out.println("O o " +e);
}
dummySequence.createTrack();
allTracks = dummySequence.getTracks();
theTrack = allTracks[0 ];
lastTick = 0 ;
for (int i=0 ;i<20 ; i++) {
theTrack.add(this .createShortMidiEvent(ShortMessage.NOTE_ON, 2 , 30 +i, 100 ,100 +1000 *i));
theTrack.add(this .createMetaMidiEvent(1 ,"start" ,100 +1000 *i));
lastTick = (1000 *i)+600 ;
theTrack.add(this .createShortMidiEvent(ShortMessage.NOTE_OFF, 2 , 30 +i, 100 , lastTick));
theTrack.add(this .createMetaMidiEvent(1 ,"end" ,lastTick));
}
return dummySequence;
}
/*
A method to create a short midi event ( sound )
*/
public MidiEvent createShortMidiEvent(int theCommand, int theChannel, int theData1, int theData2, long theTime) {
ShortMessage dummyShortMessage;
MidiEvent dummyMidiEvent;
try {
dummyShortMessage = new ShortMessage();
dummyShortMessage.setMessage(theCommand, theChannel, theData1, theData2);
dummyMidiEvent = new MidiEvent(dummyShortMessage,theTime);
}
catch (Exception e) {
System.out.println(this .getClass()+"\t" +e);
return null ;
}
return dummyMidiEvent;
}
/*
A method to create a meta midi event ( used in meta ( ) method )
*/
public MidiEvent createMetaMidiEvent(int theType, String theData1, long theTime) {
MetaMessage dummyMetaMessage;
MidiEvent dummyMidiEvent;
try {
dummyMetaMessage = new MetaMessage();
dummyMetaMessage.setMessage(theType, theData1.getBytes(), theData1.length());
dummyMidiEvent = new MidiEvent(dummyMetaMessage,theTime);
}
catch (Exception e) {
System.out.println(e);
return null ;
}
return dummyMidiEvent;
}
/*
the method is activated by each meta midi event
it puts out the actual tick position , as well as the WRONG total tick length and the RIGHT
tick length using the work around by dividing the total length by 64
*/
public void meta(MetaMessage p1) {
if (p1.getType() ==47 ) {
return ;
}
System.out.println("getTickPosition:\t" +theSequencer.getTickPosition()
+"\t Sequencer.getTickLength:\t" +theSequencer.getTickLength()
+"\tReal Length:\t" +lastTick
+"\t Sequence.getTickLength:\t" +theSequence.getTickLength()
//(theSequencer.getTickLength()/64));
);
}
public void checkLengths() throws Exception {
System.out.println("Sequencer.getTickLength() = " +theSequencer.getTickLength());
System.out.println("Sequence.getTickLength() = " +theSequence.getTickLength());
long diff = theSequencer.getTickLength() - theSequence.getTickLength();
if (diff > 100 || diff < -100 ) {
throw new Exception("Difference too large! Failed." );
}
System.out.println("Passed" );
}
public static void main(String[] args) throws Exception {
if (!hasSequencer()) {
return ;
}
TickLength tlt = new TickLength();
//tlt.start();
tlt.checkLengths();
}
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 ;
}
}
Messung V0.5 in Prozent C=92 H=90 G=90
¤ Dauer der Verarbeitung: 0.4 Sekunden
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