diff at/ofai/music/util/ConstantTempoMap.java @ 2:4c3f5bc01c97

* Import BeatRoot v0.5.7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/at/ofai/music/util/ConstantTempoMap.java	Fri Oct 08 16:11:06 2010 +0100
@@ -0,0 +1,56 @@
+/*
+	Copyright (C) 2001, 2006 by Simon Dixon
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program 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 for more details.
+
+	You should have received a copy of the GNU General Public License along
+	with this program (the file gpl.txt); if not, download it from
+	http://www.gnu.org/licenses/gpl.txt or write to the
+	Free Software Foundation, Inc.,
+	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+package at.ofai.music.util;
+
+public class ConstantTempoMap implements TempoMap {
+	
+	protected double interBeatInterval;
+
+	public ConstantTempoMap(double bpm) {
+		interBeatInterval = 60 / bpm;
+	} // constructor
+
+	public ConstantTempoMap() {
+		this(120);
+	} // default constructor
+
+	public void add(double time, double tempo) {
+		throw new RuntimeException("ConstantTempoMap: cannot change tempo");
+	} // add()
+		
+	public double toRealTime(double value) {
+		return value * interBeatInterval;
+	} // toRealTime()
+
+	public double toScoreTime(double value) {
+		return value / interBeatInterval;
+	} // toScoreTime()
+
+	public static void main(String[] args) { // unit test
+		TempoMap mtm = new ConstantTempoMap(100);
+		System.out.println(mtm.toRealTime(1));
+		System.out.println(mtm.toScoreTime(mtm.toRealTime(1)));
+		System.out.println(mtm.toScoreTime(4));
+		System.out.println(mtm.toRealTime(mtm.toScoreTime(4)));
+		mtm.add(5, 120);
+	} // main()
+
+} // ConstantTempoMap