diff --git a/services/oboeservice/AAudioServiceEndpoint.cpp b/services/oboeservice/AAudioServiceEndpoint.cpp
index 96e621a..0349034 100644
--- a/services/oboeservice/AAudioServiceEndpoint.cpp
+++ b/services/oboeservice/AAudioServiceEndpoint.cpp
@@ -78,6 +78,17 @@
     return result.str();
 }
 
+// @return true if stream found
+bool AAudioServiceEndpoint::isStreamRegistered(audio_port_handle_t portHandle) {
+    std::lock_guard<std::mutex> lock(mLockStreams);
+    for (const auto stream : mRegisteredStreams) {
+        if (stream->getPortHandle() == portHandle) {
+            return true;
+        }
+    }
+    return false;
+}
+
 void AAudioServiceEndpoint::disconnectRegisteredStreams() {
     std::lock_guard<std::mutex> lock(mLockStreams);
     mConnected.store(false);