mp3 metadata complete

build.gradle

@@ -46,7 +46,6 @@ project(":desktop") {
         compile "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
         compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
         compile "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-desktop"
-        
     }
 }
 
@@ -70,7 +69,6 @@ project(":android") {
         natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-arm64-v8a"
         natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-x86"
         natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-x86_64"
-        
     }
 }
 
@@ -84,6 +82,7 @@ project(":core") {
         compile "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
         compile "com.github.rwl:jtransforms:2.4.0"
         compile "org.apache.commons:commons-math3:3.2"
+        compile group: 'com.mpatric', name: 'mp3agic', version: '0.9.1'
     }
 }
 

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

@@ -4,29 +4,28 @@ import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.utils.Disposable;
 
-public class AudioMetadata implements Disposable {
-	private String author;
-	private String length;
-	private Texture albumCover;
-	private String lastPlayed;
-	private FileHandle fileHandle;
+public interface AudioMetadata extends Disposable {
 	
-	public AudioMetadata(FileHandle fileHandle) {
-		this.fileHandle = fileHandle;
-	}
+	public void loadAlbumCover();
 	
-	public void loadAlbumCover() {
+	public void unloadAlbumCover();
 
-	}
+	public String getAuthor();
 	
-	public void unloadAlbumCover() {
+	public String getLength();
 	
-	}
+	public Texture getAlbumCover();
+	
+	public String getLastPlayed();
+
+	public String getGenre();
+	
+	public FileHandle getFileHandle();
+
+	public RhythmBulletMetadata getRBMetadata();
+	
+	public void flushRBMetadata();
 	
 	@Override
-	public void dispose() {
-		// TODO Auto-generated method stub
-	}
-	
-	
+	public void dispose();
 }

core/src/zero1hd/rhythmbullet/audio/MP3Metadata.java

@@ -0,0 +1,132 @@
+package zero1hd.rhythmbullet.audio;
+
+import java.io.IOException;
+
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.files.FileHandle;
+import com.badlogic.gdx.graphics.Pixmap;
+import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.utils.Base64Coder;
+import com.badlogic.gdx.utils.Json;
+import com.mpatric.mp3agic.ID3v1;
+import com.mpatric.mp3agic.InvalidDataException;
+import com.mpatric.mp3agic.Mp3File;
+import com.mpatric.mp3agic.UnsupportedTagException;
+
+public class MP3Metadata implements AudioMetadata {
+	private String author = "N/A";
+	private String length;
+	private String genre;
+	private String lastPlayed;
+	private Texture albumCover;
+	private FileHandle fileHandle;
+	private RhythmBulletMetadata rbMetadata;
+	private Json json;
+	public MP3Metadata() {
+		json = new Json();
+		try {
+			Mp3File mp3file = new Mp3File(fileHandle.file());
+			long lenInSec = mp3file.getLengthInSeconds();
+			int min = (int) (lenInSec/60);
+			length = (lenInSec/60) + ":" + (lenInSec - (min*60));
+			
+			if (mp3file.hasId3v1Tag()) {
+				ID3v1 tag = mp3file.getId3v1Tag();
+				author = tag.getArtist();
+				genre = tag.getGenreDescription();
+			}
+			
+			
+			if (mp3file.hasCustomTag()) {
+				rbMetadata = json.fromJson(RhythmBulletMetadata.class, new String(Base64Coder.decode(new String(mp3file.getCustomTag()))));
+			} else {
+				rbMetadata = new RhythmBulletMetadata();
+				mp3file.setCustomTag(Base64Coder.encodeString(json.toJson(rbMetadata)).getBytes());
+			}
+			
+		} catch (UnsupportedTagException e) {
+			Gdx.app.debug("MP3Metadata", "Tag not supported by MP3agic.");
+		} catch (InvalidDataException e) {
+			Gdx.app.debug("MP3Metadata", "This files metadata has errors.");
+		} catch (IOException e) {
+			Gdx.app.debug("MP3Metadata", "IO error while reading metadata.");
+		}
+	}
+	
+	@Override
+	public void loadAlbumCover() {
+		try {
+			Mp3File mp3file = new Mp3File(fileHandle.file());
+			if (mp3file.hasId3v2Tag()) {
+				byte[] imageData = mp3file.getId3v2Tag().getAlbumImage();
+				Pixmap pixmap = new Pixmap(imageData, 0, imageData.length);
+				albumCover = new Texture(pixmap);
+				pixmap.dispose();
+			}
+		} catch (UnsupportedTagException | InvalidDataException | IOException e) {
+			e.printStackTrace();
+		}
+		
+	}
+
+	@Override
+	public void unloadAlbumCover() {
+		albumCover.dispose();
+		albumCover = null;
+	}
+
+	@Override
+	public String getAuthor() {
+		return author;
+	}
+
+	@Override
+	public String getLength() {
+		return length;
+	}
+	
+	@Override
+	public String getGenre() {
+		return genre;
+	}
+	
+	@Override
+	public Texture getAlbumCover() {
+		return albumCover;
+	}
+
+	@Override
+	public String getLastPlayed() {
+		return lastPlayed;
+	}
+
+	@Override
+	public FileHandle getFileHandle() {
+		return fileHandle;
+	}
+	
+	@Override
+	public RhythmBulletMetadata getRBMetadata() {
+		return rbMetadata;
+	}
+	
+	@Override
+	public void flushRBMetadata() {
+		try {
+			Mp3File mp3file = new Mp3File(fileHandle.file());
+			mp3file.setCustomTag(Base64Coder.encodeString(json.toJson(rbMetadata)).getBytes());
+		} catch (UnsupportedTagException | InvalidDataException | IOException e) {
+			e.printStackTrace();
+		}
+	}
+
+	@Override
+	public void dispose() {
+		if (albumCover != null) {
+			albumCover.dispose();
+			albumCover = null;
+			
+		}
+	}
+
+}

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

@@ -0,0 +1,29 @@
+package zero1hd.rhythmbullet.audio;
+
+public class RhythmBulletMetadata {
+	private String highScore = "0", lastPlayed = "N/A", difficulty = "N/A";
+	
+	public void setHighScore(String highScore) {
+		this.highScore = highScore;
+	}
+	
+	public void setLastPlayed(String lastPlayed) {
+		this.lastPlayed = lastPlayed;
+	}
+	
+	public void setDifficulty(String difficulty) {
+		this.difficulty = difficulty;
+	}
+	
+	public String getHighScore() {
+		return highScore;
+	}
+	
+	public String getDifficulty() {
+		return difficulty;
+	}
+	
+	public String getLastPlayed() {
+		return lastPlayed;
+	}
+}

core/src/zero1hd/rhythmbullet/util/Base64Preferences.java

@@ -1,49 +0,0 @@
-package zero1hd.rhythmbullet.util;
-
-import java.util.HashMap;
-
-import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.files.FileHandle;
-import com.badlogic.gdx.utils.Base64Coder;
-import com.badlogic.gdx.utils.Json;
-
-public class Base64Preferences {
-	FileHandle base64File;
-	HashMap<String, String> prefKeys;
-	Json json;
-	
-	public Base64Preferences(String prefName) {
-		base64File = Gdx.files.external(".prefs/.priv/" + prefName);
-		json = new Json();
-		
-		flush();
-	}
-	
-	public void putString(String key, String string) {
-		prefKeys.put(key, string);
-	}
-	
-	public void putObj(String key, Object object) {
-		prefKeys.put(key, json.toJson(object));
-	}
-	
-	public void writeBase64String(String text) {
-		base64File.writeString(Base64Coder.encodeString(text), true);
-	}
-	
-	public void writeBase64Object(Object obj) {
-		base64File.writeString(Base64Coder.encodeString(json.toJson(obj)), true);
-	}
-	
-	@SuppressWarnings("unchecked")
-	public void flush() {
-		prefKeys = json.fromJson(HashMap.class, new String(Base64Coder.decode(base64File.readString())));
-		if (prefKeys == null) {
-			prefKeys = new HashMap<>();
-		}
-		base64File.writeString(null, false);
-		writeBase64Object(json);
-	}
-	
-	
-}

desktop/src/zero1hd/rhythmbullet/desktop/audio/MusicList.java

@@ -11,6 +11,7 @@ import com.badlogic.gdx.utils.Array;
 import com.badlogic.gdx.utils.Sort;
 
 import zero1hd.rhythmbullet.audio.MusicManager;
+import zero1hd.rhythmbullet.desktop.audio.processor.MP3AudioProcessor;
 
 public class MusicList extends Observable {
 	private Array<FileHandle> musicArray;

desktop/src/zero1hd/rhythmbullet/desktop/audio/processor/MP3AudioProcessor.java

@@ -1,4 +1,4 @@
-package zero1hd.rhythmbullet.desktop.audio;
+package zero1hd.rhythmbullet.desktop.audio.processor;
 
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.files.FileHandle;