/*
* JFugue - API for Music Programming
* Copyright (C) 2003-2008 David Koelle
*
* http://www.jfugue.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
package org.jfugue;
/**
* Calculates the length of the given pattern, in milliseconds
*
* @author David Koelle
* @version 2.0
* @version 4.0.2 - Changed from returning PPQ to milliseconds
*
*/
public class DurationPatternTool extends ParserListenerAdapter {
private byte activeVoice = 0;
private long voiceDuration[];
public DurationPatternTool() {
reset();
}
@Override
public void voiceEvent(Voice voice) {
this.activeVoice = voice.getVoice();
}
// Only look at the first Note events, not parallel or sequential ones.
@Override
public void noteEvent(Note note) {
long duration = note.getDuration();
this.voiceDuration[this.activeVoice] += duration;
}
public void reset() {
voiceDuration = new long[16];
for (int i = 0; i < 16; i++) {
voiceDuration[i] = 0L;
}
}
public long getDuration() {
long returnDuration = 0L;
for (int i = 0; i < 16; i++) {
if (voiceDuration[i] > returnDuration) {
returnDuration = voiceDuration[i];
}
}
return returnDuration;
}
}