* Increased buffering for streaming audio from ~250 ms to 1000 ms.

* Reduced audio thread update from 100 fps to 20 fps (why was it 100 anyway??)

Result: Music stuttering dramatically reduced.

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@7226 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/scene/Mesh.java

@@ -468,7 +468,7 @@ public class Mesh implements Savable, Cloneable {
             // accepted format for buffers
             ShortBuffer sib = (ShortBuffer) ib.getData();
 
-            // aquire triangle's vertex indices
+            // acquire triangle's vertex indices
             int vertIndex = index * 3;
             indices[0] = sib.get(vertIndex);
             indices[1] = sib.get(vertIndex+1);

engine/src/lwjgl-oal/com/jme3/audio/lwjgl/LwjglAudioRenderer.java

@@ -69,7 +69,9 @@ public class LwjglAudioRenderer implements AudioRenderer, Runnable {
 
     private static final Logger logger = Logger.getLogger(LwjglAudioRenderer.class.getName());
 
-    private static final int BUFFER_SIZE = 8192;
+    // When multiplied by STREAMING_BUFFER_COUNT, will equal 44100 * 2 * 2
+    // which is exactly 1 second of audio.
+    private static final int BUFFER_SIZE = 35280;
     private static final int STREAMING_BUFFER_COUNT = 5;
 
     private final static int MAX_NUM_CHANNELS = 64;
@@ -91,7 +93,9 @@ public class LwjglAudioRenderer implements AudioRenderer, Runnable {
     private int reverbFx = -1;
     private int reverbFxSlot = -1;
 
-    private static final float UPDATE_RATE = 0.01f;
+    // Update audio 20 times per second
+    private static final float UPDATE_RATE = 0.05f;
+
     private final Thread audioThread = new Thread(this, "jME3 Audio Thread");
     private final AtomicBoolean threadLock = new AtomicBoolean(false);
 

engine/src/test/jme3test/audio/TestMusicPlayer.java

@@ -39,7 +39,6 @@ import com.jme3.audio.AudioRenderer;
 import com.jme3.audio.AudioNode;
 import com.jme3.audio.AudioNode.Status;
 import com.jme3.audio.Listener;
-import com.jme3.audio.QueuedAudioRenderer;
 import com.jme3.audio.plugins.OGGLoader;
 import com.jme3.system.AppSettings;
 import com.jme3.system.JmeSystem;
@@ -67,7 +66,7 @@ public class TestMusicPlayer extends javax.swing.JFrame {
 
     private void initAudioPlayer(){
         AppSettings settings = new AppSettings(true);
-        settings.setRenderer(null); // force dummy renderer (?)
+        settings.setRenderer(null); // disable rendering
         settings.setAudioRenderer("LWJGL");
         ar = JmeSystem.newAudioRenderer(settings);
         ar.initialize();
@@ -189,11 +188,13 @@ public class TestMusicPlayer extends javax.swing.JFrame {
                         try{
                             return new FileInputStream(selected);
                         }catch (FileNotFoundException ex){
+                            ex.printStackTrace();
                         }
                         return null;
                     }
                 });
             }catch (IOException ex){
+                ex.printStackTrace();
             }
 
             musicSource = new AudioNode(musicData, key);

engine/src/test/jme3test/audio/TestOgg.java

@@ -32,7 +32,6 @@
 
 package jme3test.audio;
 
-import com.jme3.asset.plugins.UrlLocator;
 import com.jme3.audio.AudioNode;
 import com.jme3.audio.LowPassFilter;