diff --git a/services/oboeservice/AAudioServiceStreamBase.cpp b/services/oboeservice/AAudioServiceStreamBase.cpp
index 635b45c..53d2860 100644
--- a/services/oboeservice/AAudioServiceStreamBase.cpp
+++ b/services/oboeservice/AAudioServiceStreamBase.cpp
@@ -402,3 +402,13 @@
 void AAudioServiceStreamBase::onVolumeChanged(float volume) {
     sendServiceEvent(AAUDIO_SERVICE_EVENT_VOLUME, volume);
 }
+
+int32_t AAudioServiceStreamBase::incrementServiceReferenceCount() {
+    std::lock_guard<std::mutex> lock(mCallingCountLock);
+    return ++mCallingCount;
+}
+
+int32_t AAudioServiceStreamBase::decrementServiceReferenceCount() {
+    std::lock_guard<std::mutex> lock(mCallingCountLock);
+    return --mCallingCount;
+}