diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 9b00a4d..d61188f 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -159,6 +159,19 @@
                                           int *index,
                                           audio_devices_t device) = 0;
 
+    virtual status_t setVolumeIndexForAttributes(const audio_attributes_t &attr,
+                                                 int index,
+                                                 audio_devices_t device) = 0;
+    virtual status_t getVolumeIndexForAttributes(const audio_attributes_t &attr,
+                                                 int &index,
+                                                 audio_devices_t device) = 0;
+
+    virtual status_t getMaxVolumeIndexForAttributes(const audio_attributes_t &attr,
+                                                    int &index) = 0;
+
+    virtual status_t getMinVolumeIndexForAttributes(const audio_attributes_t &attr,
+                                                    int &index) = 0;
+
     // return the strategy corresponding to a given stream type
     virtual uint32_t getStrategyForStream(audio_stream_type_t stream) = 0;
 
@@ -347,6 +360,8 @@
 
     virtual void onAudioPatchListUpdate() = 0;
 
+    virtual void onAudioVolumeGroupChanged(volume_group_t group, int flags) = 0;
+
     virtual audio_unique_id_t newAudioUniqueId(audio_unique_id_use_t use) = 0;
 
     virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state) = 0;