Less lag for audio, fixed high CPU usage in background mode

project/java/Audio.java

@@ -20,12 +20,12 @@ import java.lang.Thread;
 
 class AudioThread {
 
-	private Activity mParent;
+	private MainActivity mParent;
 	private AudioTrack mAudio;
 	private byte[] mAudioBuffer;
 	private int mVirtualBufSize;
 
-	public AudioThread(Activity parent)
+	public AudioThread(MainActivity parent)
 	{
 		mParent = parent;
 		mAudio = null;
@@ -35,13 +35,15 @@ class AudioThread {
 	
 	public int fillBuffer()
 	{
-		if( Globals.AudioBufferConfig == 0 && mAudio.getPlaybackHeadPosition() * 1000 / mAudio.getPlaybackRate() >= 30 )
+		if( Globals.AudioBufferConfig == 0 )
+			mAudio.flush();
+		mAudio.write( mAudioBuffer, 0, mVirtualBufSize );
+		if( mParent.isPaused() )
 		{
 			try{
-				Thread.sleep(10);
-			} catch(InterruptedException e) {}
+				Thread.sleep(200);
+			} catch (InterruptedException e) {}
 		}
-		mAudio.write( mAudioBuffer, 0, mVirtualBufSize );
 		
 		return 1;
 	}

project/java/MainActivity.java

@@ -170,6 +170,7 @@ public class MainActivity extends Activity {
 				downloader.setStatusField(null);
 			}
 		}
+		_isPaused = true;
 		if( mGLView != null )
 			mGLView.onPause();
 		super.onPause();
@@ -188,6 +189,12 @@ public class MainActivity extends Activity {
 					initSDL();
 			}
 		}
+		_isPaused = false;
+	}
+	
+	public boolean isPaused()
+	{
+		return _isPaused;
 	}
 
 	@Override
@@ -358,5 +365,6 @@ public class MainActivity extends Activity {
 	private EditText _screenKeyboard = null;
 	private boolean sdlInited = false;
 	public Settings.TouchMeasurementTool _touchMeasurementTool = null;
+	boolean _isPaused = false;
 
 }

project/java/Video.java

@@ -300,6 +300,10 @@ class DemoGLSurfaceView extends GLSurfaceView_SDL {
 		super.onPause();
 		mRenderer.mPaused = true;
 	};
+	
+	public boolean isPaused() {
+		return mRenderer.mPaused;
+	}
 
 	@Override
 	public void onResume() {