add support for onTimedMetaData for android

android/src/main/java/com/brentvatne/react/ReactVideoView.java

@@ -4,6 +4,7 @@ import android.annotation.SuppressLint;
 import android.content.res.AssetFileDescriptor;
 import android.graphics.Matrix;
 import android.media.MediaPlayer;
+import android.media.TimedMetaData;
 import android.net.Uri;
 import android.os.Handler;
 import android.util.Log;
@@ -16,6 +17,8 @@ import com.android.vending.expansion.zipfile.ZipResourceFile;
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.LifecycleEventListener;
 import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.bridge.WritableArray;
+import com.facebook.react.bridge.WritableNativeArray;
 import com.facebook.react.uimanager.ThemedReactContext;
 import com.facebook.react.uimanager.events.RCTEventEmitter;
 import com.yqritc.scalablevideoview.ScalableType;
@@ -24,19 +27,28 @@ import com.yqritc.scalablevideoview.ScaleManager;
 import com.yqritc.scalablevideoview.Size;
 
 import java.io.IOException;
+import java.io.UnsupportedEncodingException;
 import java.util.HashMap;
 import java.util.Map;
 import java.lang.Math;
 
 @SuppressLint("ViewConstructor")
-public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnPreparedListener, MediaPlayer
+public class ReactVideoView extends ScalableVideoView implements
-        .OnErrorListener, MediaPlayer.OnBufferingUpdateListener, MediaPlayer.OnCompletionListener, MediaPlayer.OnInfoListener, LifecycleEventListener, MediaController.MediaPlayerControl {
+    MediaPlayer.OnPreparedListener,
+    MediaPlayer.OnErrorListener,
+    MediaPlayer.OnBufferingUpdateListener,
+    MediaPlayer.OnTimedMetaDataAvailableListener,
+    MediaPlayer.OnCompletionListener,
+    MediaPlayer.OnInfoListener,
+    LifecycleEventListener,
+    MediaController.MediaPlayerControl {
 
     public enum Events {
         EVENT_LOAD_START("onVideoLoadStart"),
         EVENT_LOAD("onVideoLoad"),
         EVENT_ERROR("onVideoError"),
         EVENT_PROGRESS("onVideoProgress"),
+        EVENT_TIMED_METADATA("onTimedMetadata"),
         EVENT_SEEK("onVideoSeek"),
         EVENT_END("onVideoEnd"),
         EVENT_STALLED("onPlaybackStalled"),
@@ -70,6 +82,7 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
     public static final String EVENT_PROP_WIDTH = "width";
     public static final String EVENT_PROP_HEIGHT = "height";
     public static final String EVENT_PROP_ORIENTATION = "orientation";
+    public static final String EVENT_PROP_METADATA = "metadata";
 
     public static final String EVENT_PROP_ERROR = "error";
     public static final String EVENT_PROP_WHAT = "what";
@@ -181,6 +194,7 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
             mMediaPlayer.setOnPreparedListener(this);
             mMediaPlayer.setOnBufferingUpdateListener(this);
             mMediaPlayer.setOnCompletionListener(this);
+            mMediaPlayer.setOnTimedMetaDataAvailableListener(this);
             mMediaPlayer.setOnInfoListener(this);
         }
     }
@@ -444,6 +458,9 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
                 }
             });
         }
+
+        // Select track (so we can use it to listen to timed meta data updates)
+        mp.selectTrack(0);
     }
 
     @Override
@@ -478,6 +495,9 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
 
     @Override
     public void onBufferingUpdate(MediaPlayer mp, int percent) {
+        // Select track (so we can use it to listen to timed meta data updates)
+        mp.selectTrack(0);
+
         mVideoBufferedDuration = (int) Math.round((double) (mVideoDuration * percent) / 100.0);
     }
 
@@ -529,6 +549,30 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
         mEventEmitter.receiveEvent(getId(), Events.EVENT_END.toString(), null);
     }
 
+    @Override
+    public void onTimedMetaDataAvailable(MediaPlayer mp, TimedMetaData data) {
+        WritableMap event = Arguments.createMap();
+
+        try {
+            String rawMeta  = new String(data.getMetaData(), "UTF-8");
+            WritableMap id3 = Arguments.createMap();
+
+            id3.putString("value", rawMeta.substring(rawMeta.lastIndexOf("\u0003") + 1));
+            id3.putString("identifier", "id3/TDEN");
+
+            WritableArray metadata = new WritableNativeArray();
+
+            metadata.pushMap(id3);
+
+            event.putArray(EVENT_PROP_METADATA, metadata);
+            event.putDouble("target", getId());
+        } catch(UnsupportedEncodingException e) {
+            e.printStackTrace();
+        }
+
+        mEventEmitter.receiveEvent(getId(), Events.EVENT_TIMED_METADATA.toString(), event);
+    }
+
     @Override
     protected void onDetachedFromWindow() {