functional (i think?)

core/src/zero1hd/rhythmbullet/audio/Mp3Manager.java

@@ -3,6 +3,8 @@ package zero1hd.rhythmbullet.audio;
 import java.io.IOException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.locks.ReentrantLock;
 
 import org.jaudiotagger.audio.exceptions.InvalidAudioFrameException;
 import org.jaudiotagger.audio.exceptions.ReadOnlyFileException;
@@ -32,7 +34,7 @@ public class Mp3Manager implements MusicManager {
 	
 	private int sampleRate;
 	private long sampleCount;
-	private float durationInSeconds;
+	private double durationInSeconds;
 	private byte channels;
 	Bitstream bitstream;
 	MP3Decoder decoder;
@@ -41,22 +43,29 @@ public class Mp3Manager implements MusicManager {
 	private byte[] workset;
 	private int indexHead = -1;
 	
+	ReentrantLock lock = new ReentrantLock();
+	
 	private ExecutorService exec;
-	private boolean loadComplete;
 	
 	public Mp3Manager(FileHandle audioFile) {
+		lock = new ReentrantLock();
+		
 		exec = Executors.newSingleThreadExecutor();
 		exec.submit(() -> {
+			lock.lock();
 			try {
 				MP3File mp3File = new MP3File(audioFile.file());
-				sampleCount = MathUtils.round((float) (mp3File.getAudioHeader().getSampleRateAsNumber()*mp3File.getMP3AudioHeader().getPreciseTrackLength())); 
+				sampleCount = MathUtils.round(Float.valueOf(String.valueOf((mp3File.getAudioHeader().getSampleRateAsNumber()*mp3File.getMP3AudioHeader().getPreciseTrackLength())))); 
-				durationInSeconds = mp3File.getMP3AudioHeader().getNumberOfFrames()/readWindowSize;
 				sampleRate = mp3File.getMP3AudioHeader().getSampleRateAsNumber();
+				durationInSeconds = mp3File.getMP3AudioHeader().getPreciseTrackLength();
+
 			} catch (IOException | TagException | ReadOnlyFileException | InvalidAudioFrameException e) {
 				e.printStackTrace();
+			} finally {
+				lock.unlock();
 			}
 			
-			loadComplete = true;
+			
 		});
 		
 		bitstream = new Bitstream(audioFile.read());
@@ -111,7 +120,7 @@ public class Mp3Manager implements MusicManager {
 
 	@Override
 	public float getDuration() {
-		return durationInSeconds;
+		return Float.valueOf(String.valueOf(durationInSeconds));
 	}
 
 	@Override
@@ -222,6 +231,11 @@ public class Mp3Manager implements MusicManager {
 
 	@Override
 	public boolean isFinishedLoading() {
-		return loadComplete;
+		try {
+			return lock.tryLock(0, TimeUnit.SECONDS);
+		} catch (InterruptedException e) {
+			e.printStackTrace();
+			return false;
+		}
 	}
 }

core/src/zero1hd/rhythmbullet/graphics/ui/components/Visualizer.java

@@ -1,5 +1,6 @@
 package zero1hd.rhythmbullet.graphics.ui.components;
 
+import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.g2d.Batch;
 import com.badlogic.gdx.scenes.scene2d.ui.Widget;
@@ -25,9 +26,13 @@ public class Visualizer extends Widget {
 	@Override
 	public void act(float delta) {
 		if (mm != null && mm.isFinishedLoading() && !mmSet) {
+			Gdx.app.debug("Visualizer", "\nsample count: " + mm.getSampleCount()
+			+ "\nDuration in seconds: " + mm.getDuration() + 
+			"\nSample rate: " + mm.getSampleRate());
 			vis.setMM(mm);
 			mmSet = true;
 		}
+		
 		vis.modify(delta);
 		vis.setHeight(getHeight());
 		vis.setWidth(getWidth());