diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 1155987..1fe60d4 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -271,6 +271,14 @@
 
     virtual status_t getVolumeGroupFromAudioAttributes(const AudioAttributes &aa,
                                                        volume_group_t &volumeGroup) = 0;
+
+    virtual status_t setPreferredDeviceForStrategy(product_strategy_t strategy,
+                                                   const AudioDeviceTypeAddr &device) = 0;
+
+    virtual status_t removePreferredDeviceForStrategy(product_strategy_t strategy) = 0;
+
+    virtual status_t getPreferredDeviceForStrategy(product_strategy_t strategy,
+                                                   AudioDeviceTypeAddr &device) = 0;
 };