Init HotwordDetectionSrvc identity earlier

Grants mic access to the process as soon as it comes up, instead of
waiting for the initialization status callback.

Bug: 190011174
Test: manual - dsp and non-dsp; restarting while invoking the hotword
Test: atest CtsVoiceInteractionTestCases
Change-Id: I54e0b42868f663ae1c9edd9bcf4aaee2a13b827a

2 files changed, 11 insertions, 0 deletions

diff --git a/core/java/android/service/voice/HotwordDetectionService.java b/core/java/android/service/voice/HotwordDetectionService.java
index 567ee2f65565..a43523974480 100644
--- a/core/java/android/service/voice/HotwordDetectionService.java
+++ b/core/java/android/service/voice/HotwordDetectionService.java
@@ -201,6 +201,11 @@ public abstract class HotwordDetectionService extends Service {
         }
 
         @Override
+        public void ping(IRemoteCallback callback) throws RemoteException {
+            callback.sendResult(null);
+        }
+
+        @Override
         public void stopDetection() {
             HotwordDetectionService.this.onStopDetection();
         }
diff --git a/core/java/android/service/voice/IHotwordDetectionService.aidl b/core/java/android/service/voice/IHotwordDetectionService.aidl
index d7ed67812e87..f2a93f100986 100644
--- a/core/java/android/service/voice/IHotwordDetectionService.aidl
+++ b/core/java/android/service/voice/IHotwordDetectionService.aidl
@@ -57,5 +57,11 @@ oneway interface IHotwordDetectionService {
         in IContentCaptureManager contentCaptureManager,
         in ContentCaptureOptions options);
 
+    /**
+     * Simply requests the service to trigger the callback, so that the system can check its
+     * identity.
+     */
+    void ping(in IRemoteCallback callback);
+
     void stopDetection();
 }