Clean code

ijkplayer/src/main/java/tv/danmaku/ijk/media/player/IjkMediaPlayer.java

@@ -818,7 +818,7 @@ public final class IjkMediaPlayer extends AbstractMediaPlayer {
                     player.notifyOnInfo(msg.arg1, msg.arg2);
                     return;
                 case MEDIA_TIMED_TEXT:
-                    player.notifyOnTimedText(msg.obj == null ? null : IjkTimedText.create(msg.obj.toString()));
+                    player.notifyOnTimedText(IjkTimedText.create((msg.arg1 >= 2 || msg.obj == null) ? "" : msg.obj.toString()));
                     return;
                 case MEDIA_NOP: // interface test message - ignore
                     break;

ijkplayer/src/main/java/tv/danmaku/ijk/media/player/IjkTimedText.java

@@ -2,17 +2,30 @@ package tv.danmaku.ijk.media.player;
 
 public final class IjkTimedText {
 
-    private final String text;
+    private String text;
+    private int[] bitmap;
 
     public static IjkTimedText create(String text) {
         return new IjkTimedText(text);
     }
 
+    public static IjkTimedText create(int[] bitmap) {
+        return new IjkTimedText(bitmap);
+    }
+
     public IjkTimedText(String text) {
         this.text = text;
     }
 
+    public IjkTimedText(int[] bitmap) {
+        this.bitmap = bitmap;
+    }
+
     public String getText() {
         return text;
     }
+
+    public int[] getBitmap() {
+        return bitmap;
+    }
 }