Merge "MediaPlayerBase: Add PlayerEventCallback#onPlaybackSpeedChanged()" into pi-dev

media/java/android/media/MediaPlayerBase.java

@@ -337,6 +337,13 @@ public abstract class MediaPlayerBase implements AutoCloseable {
          */
         public void onBufferingStateChanged(@NonNull MediaPlayerBase mpb,
                 @NonNull DataSourceDesc dsd, @BuffState int state) { }
+
+        /**
+         * Called to indicate that the playback speed has changed.
+         * @param mpb the player that is buffering
+         * @param speed the new playback speed.
+         */
+        public void onPlaybackSpeedChanged(@NonNull MediaPlayerBase mpb, float speed) { }
     }
 
 }

media/java/android/media/MediaSession2.java

@@ -829,6 +829,15 @@ public class MediaSession2 implements AutoCloseable {
         public void onBufferingStateChanged(@NonNull MediaSession2 session,
                 @NonNull MediaPlayerBase player, @NonNull MediaItem2 item, @BuffState int state) { }
 
+        /**
+         * Called to indicate that the playback speed has changed.
+         * @param session the session for this event
+         * @param player the player for this event
+         * @param speed the new playback speed.
+         */
+        public void onPlaybackSpeedChanged(@NonNull MediaSession2 session,
+                @NonNull MediaPlayerBase player, float speed) { }
+
         /**
          * Called when a playlist is changed from the {@link MediaPlaylistAgent}.
          * <p>