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diff --git a/gnu/javax/sound/midi/file/MidiDataOutputStream.java b/gnu/javax/sound/midi/file/MidiDataOutputStream.java
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+++ b/gnu/javax/sound/midi/file/MidiDataOutputStream.java
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+/* MidiDataOutputStream.java -- adds variable length MIDI ints
+   Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.midi.file;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * MidiDataOutputStream is simply a DataOutputStream with the addition
+ * of special variable length int writing as defined by the MIDI spec.
+ *
+ * @author Anthony Green (green@redhat.com)
+ */
+public class MidiDataOutputStream
+    extends DataOutputStream
+{
+  /**
+   * Create a MidiDataOutputStream.
+   */
+  public MidiDataOutputStream(OutputStream os)
+  {
+    super(os);
+  }
+
+  /**
+   * Return the length of a variable length encoded int without
+   * writing it out.
+   *
+   * @return the length of the encoding
+   */
+  public int variableLengthIntLength (int value)
+  {
+    int length = 0;
+    int buffer = value & 0x7F;
+
+    while ((value >>= 7) != 0)
+      {
+	buffer <<= 8;
+	buffer |= ((value & 0x7F) | 0x80);
+      }
+      
+    while (true)
+      {
+	length++;
+	if ((buffer & 0x80) != 0)
+	  buffer >>>= 8;
+	else
+	  break;
+      }
+
+    return length;
+  }
+  
+  /**
+   * Write an int encoded in the MIDI-style variable length
+   * encoding format.
+   */
+  public synchronized void writeVariableLengthInt (int value) 
+    throws IOException
+  {
+    int buffer = value & 0x7F;
+
+    while ((value >>= 7) != 0)
+      {
+	buffer <<= 8;
+	buffer |= ((value & 0x7F) | 0x80);
+      }
+      
+    while (true)
+      {
+	writeByte(buffer & 0xff);
+	if ((buffer & 0x80) != 0)
+	  buffer >>>= 8;
+	else
+	  break;
+      }
+  }
+}