diff --git a/media/java/android/media/MediaPlayerBase.java b/media/java/android/media/MediaPlayerBase.java
index df1d547..9e86d92 100644
--- a/media/java/android/media/MediaPlayerBase.java
+++ b/media/java/android/media/MediaPlayerBase.java
@@ -336,6 +336,13 @@
          */
         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) { }
     }
 
 }
diff --git a/media/java/android/media/MediaSession2.java b/media/java/android/media/MediaSession2.java
index dc9561b..7dde318 100644
--- a/media/java/android/media/MediaSession2.java
+++ b/media/java/android/media/MediaSession2.java
@@ -830,6 +830,15 @@
                 @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>
          * This is called when the underlying agent has called