Fix crashes caused by rendering to a surface on teardown

src/com/limelight/Game.java

@@ -86,16 +86,11 @@ public class Game extends Activity implements OnGenericMotionListener, OnTouchLi
 	
 	@Override
 	public void onPause() {
+		conn.stop();
 		finish();
 		super.onPause();
 	}
 	
-	@Override
-	public void onDestroy() {
-		conn.stop();
-		super.onDestroy();
-	}
-	
 	@Override
 	public void onTrimMemory(int trimLevel) {
 		if (trimLevel >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW)

src/com/limelight/nvstream/NvVideoStream.java

@@ -37,6 +37,7 @@ public class NvVideoStream {
 	private AvVideoDepacketizer depacketizer = new AvVideoDepacketizer();
 	
 	private DecoderRenderer decrend;
+	private boolean startedRendering;
 	
 	private boolean aborting = false;
 	
@@ -70,6 +71,10 @@ public class NvVideoStream {
 			} catch (InterruptedException e) { }
 		}
 		
+		if (startedRendering) {
+			decrend.stop();
+		}
+		
 		if (decrend != null) {
 			decrend.release();
 		}
@@ -187,6 +192,7 @@ public class NvVideoStream {
 				
 				// Start the renderer
 				decrend.start();
+				startedRendering = true;
 			}
 		};
 		threads.add(t);

src/com/limelight/nvstream/av/video/CpuDecoderRenderer.java

@@ -2,7 +2,6 @@ package com.limelight.nvstream.av.video;
 
 import java.nio.ByteBuffer;
 
-import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.view.Surface;
 
@@ -66,6 +65,10 @@ public class CpuDecoderRenderer implements DecoderRenderer {
 	@Override
 	public void stop() {
 		rendererThread.interrupt();
+		
+		try {
+			rendererThread.join();
+		} catch (InterruptedException e) { }
 	}
 
 	@Override

src/com/limelight/nvstream/av/video/MediaCodecDecoderRenderer.java

@@ -105,6 +105,10 @@ public class MediaCodecDecoderRenderer implements DecoderRenderer {
 	@Override
 	public void stop() {
 		rendererThread.interrupt();
+		
+		try {
+			rendererThread.join();
+		} catch (InterruptedException e) { }
 	}
 
 	@Override