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Java/media/SoundScroll.java

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+/*   
+SoundScroll.java
+ *    
+ *    Copyright (c) 2000, Ted Nelson and Tuomas Lukka
+ *
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
+ *    the licenses.
+ *
+ *    This software 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 README
+ *    file for more details.
+ *
+ */
+/*
+ * Written by Tuomas Lukka
+ */
+package org.gzigzag;
+import java.io.*;
+import java.util.*;
+
+/** A scroll of sound. 
+ * The fact that you need to specify the duraction when creating is not good but
+ * we can fix that later somehow.
+ */
+public class SoundScroll extends Scroll {
+public static final String rcsid = "$Id: SoundScroll.java,v 1.3 2000/09/19 10:32:00 ajk Exp $";
+
+    // public abstract void preparePlayer();
+    /** XXX change to play(Span) and get the next at runtime?
+     */
+    protected SoundScroll(String i) { super(i); }
+
+    Vector obses = new Vector();
+    public void addObs(SoundObs o) {
+	    obses.addElement(o);
+    }
+    protected void inform(int event, long l) {
+	    for(int i = 0; i<obses.size(); i++)
+		    ((SoundObs)obses.elementAt(i)).playingAt(event,l);
+    }
+
+    // Cheat: it's currently just a file.
+    File f;
+    public File getFile() { return f; }
+    long d;
+    public long getDurationNanoseconds() { return d; }
+    public SoundScroll(String id, File fn, long dur) {
+	super(id);
+	f = fn;
+	d = dur;
+    }
+    public SoundScroll(String id, String fn, long dur) {
+	super(id);
+	f = new File(fn);
+	d = dur;
+    }
+}