diff --git a/services/audioflinger/MmapTracks.h b/services/audioflinger/MmapTracks.h
index 442dd80..30bbd5d 100644
--- a/services/audioflinger/MmapTracks.h
+++ b/services/audioflinger/MmapTracks.h
@@ -36,7 +36,8 @@
                             const android::content::AttributionSourceState& attributionSource,
                             pid_t creatorPid,
                             audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE,
-                            float volume = 0.0f);
+                            float volume = 0.0f,
+                            bool muted = false);
     ~MmapTrack() override;
 
     status_t initCheck() const final;
@@ -71,7 +72,11 @@
     void setPortVolume(float volume) override {
         mVolume = volume;
     }
+    void setPortMute(bool muted) override {
+        mMuteState.muteFromPortVolume = muted;
+    }
     float getPortVolume() const override { return mVolume; }
+    bool getPortMute() const override { return mMuteState.muteFromPortVolume; }
 
 private:
     DISALLOW_COPY_AND_ASSIGN(MmapTrack);