starting work on visualizer

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

@@ -12,7 +12,6 @@ import zero1hd.rhythmbullet.util.MiniSender;
 
 public class AudioAnalyzer {
 	private boolean containsData;
-	FloatFFT_1D fft;
 	private CoreMusicInfo musicInfo;
 
 	float[] audioPCM;
@@ -91,7 +90,7 @@ public class AudioAnalyzer {
 			Gdx.app.debug("Threshold Calc Range M", String.valueOf(umThresholdCalcRange));
 			Gdx.app.debug("Threshold Calc Range Bass", String.valueOf(bassThresholdCalcRange));
 			
-			fft = new FloatFFT_1D(musicInfo.getReadWindowSize());
+			FloatFFT_1D fft = new FloatFFT_1D(musicInfo.getReadWindowSize());
 			int seedDigit = 0;
 			
 			while (musicInfo.readSamples(audioPCM) > 0 && work) {
@@ -311,12 +310,6 @@ public class AudioAnalyzer {
 		exec.submit(analysisAlgorithm);
 	}
 	
-	public void shrinkData() {
-		bassSpectralFlux = null;
-		mSpectralFlux = null;
-		umSpectralFlux = null;
-	}
-	
 	public void runThresholdCleaning(float rangeModifier) {
 		this.bassThresholdMultiplier -= rangeModifier;
 		this.umThresholdMultiplier -= rangeModifier;

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

@@ -46,8 +46,6 @@ public class AudioInfo implements Disposable {
 				e.printStackTrace();
 			}
 			
-//			invalidMusic = true;
-			
 		} else {
 			
 			try {

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

@@ -9,13 +9,13 @@ public interface CoreMusicInfo extends Disposable {
 	 * sets a integer variable to the current window of audio data the playback is at.
 	 * Useful for efficiency because we compute once for that frame then get the values everytime it is required instead of calculating every time we get the index.
 	 */
-	public void readIndexUpdate();
+	public void playbackIndexUpdate();
 	
 	/**
 	 * Gets the current position in seconds s
 	 * @return the current frame of audio.
 	 */
-	public int getReadIndex();
+	public int getPlaybackIndexPosition();
 	
 	/**
 	 * Completely resets the current audio data. Think of pooling, except, only one instance which is reused instead of multiple.
@@ -59,4 +59,10 @@ public interface CoreMusicInfo extends Disposable {
 	 * @return sample rate as float
 	 */
 	public float getSampleRate();
+	
+	/**
+	 * The current numerical value of the last window read
+	 * @return
+	 */
+	public int getCurrentReadWindowIndex();
 }

core/src/zero1hd/rhythmbullet/audio/Mp3AudioData.java

@@ -23,6 +23,7 @@ import javazoom.jl.decoder.OutputBuffer;
 public class Mp3AudioData implements CoreMusicInfo {
 	private int readWindowSize = 1024;
 	
+	private int currentReadWindowIndex;
 	private Music playbackMusic;
 	private int readIndex;
 	
@@ -67,12 +68,12 @@ public class Mp3AudioData implements CoreMusicInfo {
 	}
 
 	@Override
-	public void readIndexUpdate() {
+	public void playbackIndexUpdate() {
 		readIndex = (int) (playbackMusic.getPosition() * sampleRate / readWindowSize);
 	}
 
 	@Override
-	public int getReadIndex() {
+	public int getPlaybackIndexPosition() {
 		return readIndex;
 	}
 
@@ -130,6 +131,9 @@ public class Mp3AudioData implements CoreMusicInfo {
 				samples[sid] /= Short.MAX_VALUE+1;
 			}
 		}
+		if (framesRead != 0) {
+			currentReadWindowIndex++;
+		}
 		return framesRead;
 	}
 	
@@ -175,4 +179,9 @@ public class Mp3AudioData implements CoreMusicInfo {
 	public float getSampleRate() {
 		return sampleRate;
 	}
+
+	@Override
+	public int getCurrentReadWindowIndex() {
+		return currentReadWindowIndex;
+	}
 }

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

@@ -14,7 +14,8 @@ import zero1hd.wavedecoder.WavDecoder;
 public class WavAudioData implements CoreMusicInfo {
 	private int readWindowSize = 1024;
 	private AudioFormat format;
-	int readIndex;
+	private int readIndex;
+	private int currentReadWindowIndex;
 	Music playbackMusic;
 	WavDecoder decoder;
 	
@@ -31,12 +32,12 @@ public class WavAudioData implements CoreMusicInfo {
 	}
 	
 	@Override
-	public void readIndexUpdate() {
+	public void playbackIndexUpdate() {
 		readIndex = (int) (playbackMusic.getPosition() * decoder.getSampleRate() / readWindowSize);
 	}
 	
 	@Override
-	public int getReadIndex() {
+	public int getPlaybackIndexPosition() {
 		return readIndex;
 	}
 	
@@ -65,6 +66,10 @@ public class WavAudioData implements CoreMusicInfo {
 		} catch (IOException e) {
 			e.printStackTrace();
 		}
+		
+		if (samplesRead != 0) {
+			currentReadWindowIndex++;
+		}
 		return samplesRead;
 	}
 
@@ -89,4 +94,9 @@ public class WavAudioData implements CoreMusicInfo {
 	public float getSampleRate() {
 		return format.getSampleRate();
 	}
+
+	@Override
+	public int getCurrentReadWindowIndex() {
+		return currentReadWindowIndex;
+	}
 }

core/src/zero1hd/rhythmbullet/audio/map/GamePlayMap.java

@@ -91,8 +91,8 @@ public class GamePlayMap {
 	}
 	
 	public MapWindowData getCurrentWindowBasedOnIndex() {
-		if (index != musicData.getReadIndex()) {
+		if (index != musicData.getPlaybackIndexPosition()) {
-			index = musicData.getReadIndex();
+			index = musicData.getPlaybackIndexPosition();
 			if (index < spawnList.length) {
 				return spawnList[index];
 			}

core/src/zero1hd/rhythmbullet/stages/GamePlayArea.java

@@ -60,7 +60,7 @@ public class GamePlayArea extends Stage {
 	public void act(float delta) {
 		MapWindowData mwd;
 		if (audioMap != null && audioMap.getMusicData().getPlaybackMusic().isPlaying()) {
-			audioMap.getMusicData().readIndexUpdate();
+			audioMap.getMusicData().playbackIndexUpdate();
 			if ((mwd = audioMap.getCurrentWindowBasedOnIndex()) != null) {
 				EntitySpawnInfo[] currentSpawnInfo = mwd.getArray();
 				if (currentSpawnInfo != null) {

core/src/zero1hd/rhythmbullet/ui/builders/AudioGraph.java

@@ -123,7 +123,7 @@ public class AudioGraph extends Actor {
 	@Override
 	public void act(float delta) {
 		if (audioData != null) {
-			setAudioDataIndex(audioData.getReadIndex());
+			setAudioDataIndex(audioData.getPlaybackIndexPosition());
 		}
 		super.act(delta);
 	}

core/src/zero1hd/rhythmbullet/ui/builders/AudioGraphRelation.java

@@ -123,7 +123,7 @@ public class AudioGraphRelation extends Actor {
 	@Override
 	public void act(float delta) {
 		if (audioData != null) {
-			setAudioDataIndex(audioData.getReadIndex());
+			setAudioDataIndex(audioData.getPlaybackIndexPosition());
 		}
 		super.act(delta);
 	}

core/src/zero1hd/rhythmbullet/ui/builders/Visualizer.java

@@ -0,0 +1,33 @@
+package zero1hd.rhythmbullet.ui.builders;
+
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.scenes.scene2d.Actor;
+
+import edu.emory.mathcs.jtransforms.fft.FloatFFT_1D;
+import zero1hd.rhythmbullet.audio.CoreMusicInfo;
+
+public class Visualizer extends Actor {
+	private CoreMusicInfo cmi;
+	private FloatFFT_1D fft;
+	float[] audioPCM;
+	
+	public Visualizer() {
+		fft = new FloatFFT_1D(cmi.getReadWindowSize());
+		audioPCM = new float[cmi.getReadWindowSize()];
+		
+		setSize(Gdx.graphics.getHeight()*0.6f, Gdx.graphics.getHeight()*0.6f);
+	}
+	
+	@Override
+	public void act(float delta) {
+		if (cmi.getPlaybackIndexPosition() > cmi.getCurrentReadWindowIndex()) {
+			cmi.readSamples(audioPCM);
+			Gdx.app.debug("Visualizer", "Skipping a frame to catch up to music.");
+		} else {
+			Gdx.app.debug("Visualizer", "Not reading so music can catch up.");
+		}
+		
+		fft.realForward(audioPCM);
+		super.act(delta);
+	}
+}

core/src/zero1hd/rhythmbullet/ui/windows/BeatViewer.java

@@ -120,7 +120,7 @@ public class BeatViewer extends Window {
 	@Override
 	public void act(float delta) {
 		if (music != null) {
-			songIndex = music.getReadIndex();
+			songIndex = music.getPlaybackIndexPosition();
 		}
 		super.act(delta);
 	}