1 files changed, 2 insertions, 0 deletions
diff --git a/notifier.py b/notifier.py
index e052b5c..42ab529 100644
--- a/notifier.py
+++ b/notifier.py
@@ -1,6 +1,8 @@
 
 class Notifier:
     PLAYING_STATE_EVENT = 0
+    PLAYBACK_VOLUME_EVENT = 1
+    PLAYBACK_RATE_EVENT = 2
 
     def __init__(self, player):
         self._callbacks = dict()