diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index edcb805..3539f00 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -148,7 +148,8 @@
                                       output_type_t *outputType,
                                       bool *isSpatialized,
                                       bool *isBitPerfect,
-                                      float *volume) = 0;
+                                      float *volume,
+                                      bool *muted) = 0;
     // indicates to the audio policy manager that the output starts being used by corresponding
     // stream.
     virtual status_t startOutput(audio_port_handle_t portId) = 0;
@@ -197,6 +198,7 @@
     // setting volume for all devices
     virtual status_t setStreamVolumeIndex(audio_stream_type_t stream,
                                           int index,
+                                          bool muted,
                                           audio_devices_t device) = 0;
 
     // retrieve current volume index for the specified stream and the
@@ -208,6 +210,7 @@
 
     virtual status_t setVolumeIndexForAttributes(const audio_attributes_t &attr,
                                                  int index,
+                                                 bool muted,
                                                  audio_devices_t device) = 0;
     virtual status_t getVolumeIndexForAttributes(const audio_attributes_t &attr,
                                                  int &index,
@@ -514,7 +517,7 @@
     // set a stream volume for a particular output. For the same user setting, a given stream type
     // can have different volumes
     // for each output (destination device) it is attached to.
-    virtual status_t setStreamVolume(audio_stream_type_t stream, float volume,
+    virtual status_t setStreamVolume(audio_stream_type_t stream, float volume, bool muted,
                                      audio_io_handle_t output, int delayMs = 0) = 0;
     /**
      * Set volume for given AudioTrack port ids for a particular output.
@@ -522,12 +525,13 @@
      * can have different volumes for each output (destination device) it is attached to.
      * @param ports to consider
      * @param volume to apply
+     * @param muted to apply
      * @param output to consider
      * @param delayMs to use
      * @return NO_ERROR if successful
      */
     virtual status_t setPortsVolume(const std::vector<audio_port_handle_t>& ports, float volume,
-            audio_io_handle_t output, int delayMs = 0) = 0;
+            bool muted, audio_io_handle_t output, int delayMs = 0) = 0;
 
     // function enabling to send proprietary informations directly from audio policy manager to
     // audio hardware interface.