Expose the percentage complete indicator on the "buffering" event.

src/main/java/uk/co/caprica/vlcj/binding/internal/libvlc_event_u.java

@@ -31,6 +31,7 @@ public static class ByValue extends libvlc_event_u implements Union.ByValue {}
     public media_parsed_changed            media_parsed_changed;
     public media_freed                     media_freed;
     public media_state_changed             media_state_changed;
+    public media_player_buffering          media_player_buffering;
     public media_player_position_changed   media_player_position_changed;
     public media_player_time_changed       media_player_time_changed;
     public media_player_title_changed      media_player_title_changed;

src/main/java/uk/co/caprica/vlcj/binding/internal/media_player_buffering.java

@@ -0,0 +1,33 @@
+/*
+ * This file is part of VLCJ.
+ *
+ * VLCJ 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * VLCJ 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 VLCJ.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ * Copyright 2009, 2010, 2011, 2012 Caprica Software Limited.
+ */
+
+package uk.co.caprica.vlcj.binding.internal;
+
+import com.sun.jna.Structure;
+
+/**
+ *
+ */
+public class media_player_buffering extends Structure {
+
+    /**
+     * A percentage complete indicator, ranging from 0.0 to 100.0.
+     */
+    public float new_cache;
+}

src/main/java/uk/co/caprica/vlcj/component/DirectMediaPlayerComponent.java

@@ -203,7 +203,7 @@ public void opening(MediaPlayer mediaPlayer) {
     }
 
     @Override
-    public void buffering(MediaPlayer mediaPlayer) {
+    public void buffering(MediaPlayer mediaPlayer, float newCache) {
     }
 
     @Override

src/main/java/uk/co/caprica/vlcj/component/EmbeddedMediaPlayerComponent.java

@@ -334,7 +334,7 @@ public void opening(MediaPlayer mediaPlayer) {
     }
 
     @Override
-    public void buffering(MediaPlayer mediaPlayer) {
+    public void buffering(MediaPlayer mediaPlayer, float newCache) {
     }
 
     @Override

src/main/java/uk/co/caprica/vlcj/player/MediaPlayerEventAdapter.java

@@ -45,7 +45,7 @@ public void opening(MediaPlayer mediaPlayer) {
     }
 
     @Override
-    public void buffering(MediaPlayer mediaPlayer) {
+    public void buffering(MediaPlayer mediaPlayer, float newCache) {
     }
 
     @Override

src/main/java/uk/co/caprica/vlcj/player/MediaPlayerEventListener.java

@@ -58,8 +58,9 @@ public interface MediaPlayerEventListener {
      * Buffering media.
      * 
      * @param mediaPlayer media player that raised the event
+     * @param newCache percentage complete, ranging from 0.0 to 100.0
      */
-    void buffering(MediaPlayer mediaPlayer);
+    void buffering(MediaPlayer mediaPlayer, float newCache);
 
     /**
      * The media started playing.

src/main/java/uk/co/caprica/vlcj/player/events/MediaPlayerBufferingEvent.java

@@ -27,17 +27,23 @@
  */
 class MediaPlayerBufferingEvent extends AbstractMediaPlayerEvent {
 
+    /**
+     * 
+     */
+    private final float newCache;
+
     /**
      * Create a media player event.
      * 
      * @param mediaPlayer media player the event relates to
      */
-    MediaPlayerBufferingEvent(MediaPlayer mediaPlayer) {
+    MediaPlayerBufferingEvent(MediaPlayer mediaPlayer, float newCache) {
         super(mediaPlayer);
+        this.newCache = newCache;
     }
 
     @Override
     public void notify(MediaPlayerEventListener listener) {
-        listener.buffering(mediaPlayer);
+        listener.buffering(mediaPlayer, newCache);
     }
 }

src/main/java/uk/co/caprica/vlcj/player/events/MediaPlayerEventFactory.java

@@ -24,6 +24,7 @@
 import uk.co.caprica.vlcj.binding.internal.media_duration_changed;
 import uk.co.caprica.vlcj.binding.internal.media_meta_changed;
 import uk.co.caprica.vlcj.binding.internal.media_parsed_changed;
+import uk.co.caprica.vlcj.binding.internal.media_player_buffering;
 import uk.co.caprica.vlcj.binding.internal.media_player_length_changed;
 import uk.co.caprica.vlcj.binding.internal.media_player_pausable_changed;
 import uk.co.caprica.vlcj.binding.internal.media_player_position_changed;
@@ -94,7 +95,7 @@ public MediaPlayerEvent createEvent(libvlc_event_t event, int eventMask) {
 
             case libvlc_MediaPlayerBuffering:
                 if(MediaPlayerEventType.set(eventMask, MediaPlayerEventType.BUFFERING)) {
-                    result = new MediaPlayerBufferingEvent(mediaPlayer);
+                    result = new MediaPlayerBufferingEvent(mediaPlayer, ((media_player_buffering)event.u.getTypedValue(media_player_buffering.class)).new_cache);
                 }
                 break;
 

src/test/java/uk/co/caprica/vlcj/test/youtube/YouTubePlayer.java

@@ -153,6 +153,11 @@ public void actionPerformed(ActionEvent e) {
         mediaPlayer.setPlaySubItems(true); // <--- This is very important for YouTube media
 
         mediaPlayer.addMediaPlayerEventListener(new MediaPlayerEventAdapter() {
+            @Override
+            public void buffering(MediaPlayer mediaPlayer, float newCache) {
+                System.out.println("Buffering " + newCache);
+            }
+
             @Override
             public void mediaSubItemAdded(MediaPlayer mediaPlayer, libvlc_media_t subItem) {
                 List<String> items = mediaPlayer.subItems();