diff --git a/services/oboeservice/AAudioServiceStreamMMAP.h b/services/oboeservice/AAudioServiceStreamMMAP.h
index 42032d7..f4ce83d 100644
--- a/services/oboeservice/AAudioServiceStreamMMAP.h
+++ b/services/oboeservice/AAudioServiceStreamMMAP.h
@@ -93,7 +93,13 @@
      * Device specific startup.
      * @return AAUDIO_OK or negative error.
      */
-    aaudio_result_t startDevice() override;
+    aaudio_result_t startDevice_l() REQUIRES(mLock) override;
+
+    aaudio_result_t startClient_l(const android::AudioClient& client,
+                                  const audio_attributes_t *attr,
+                                  audio_port_handle_t *clientHandle) REQUIRES(mLock) override;
+
+    aaudio_result_t stopClient_l(audio_port_handle_t clientHandle) REQUIRES(mLock) override;
 
 private: