camera2 ndk: Allow nullptr for ACameraCaptureSession_captureCallbacks.onClosed.

Bug: 134680093

Test: AImageReaderVendorTest

Change-Id: I8d365b434c257e949496d9495d0fa31a18a2e068
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>

camera/ndk/impl/ACameraCaptureSession.cpp

@@ -33,7 +33,9 @@ ACameraCaptureSession::~ACameraCaptureSession() {
         dev->unlockDevice();
     }
     // Fire onClosed callback
-    (*mUserSessionCallback.onClosed)(mUserSessionCallback.context, this);
+    if (mUserSessionCallback.onClosed != nullptr) {
+        (*mUserSessionCallback.onClosed)(mUserSessionCallback.context, this);
+    }
     ALOGV("~ACameraCaptureSession: %p is deleted", this);
 }
 

camera/ndk/ndk_vendor/tests/AImageReaderVendorTest.cpp

@@ -253,21 +253,9 @@ class CameraHelper {
         return true;
     }
 
-    static void onDeviceDisconnected(void* /*obj*/, ACameraDevice* /*device*/) {}
-
-    static void onDeviceError(void* /*obj*/, ACameraDevice* /*device*/, int /*errorCode*/) {}
-
-    static void onSessionClosed(void* /*obj*/, ACameraCaptureSession* /*session*/) {}
-
-    static void onSessionReady(void* /*obj*/, ACameraCaptureSession* /*session*/) {}
-
-    static void onSessionActive(void* /*obj*/, ACameraCaptureSession* /*session*/) {}
-
    private:
-    ACameraDevice_StateCallbacks mDeviceCb{this, onDeviceDisconnected,
-                                           onDeviceError};
-    ACameraCaptureSession_stateCallbacks mSessionCb{
-        this, onSessionClosed, onSessionReady, onSessionActive};
+    ACameraDevice_StateCallbacks mDeviceCb{this, nullptr, nullptr};
+    ACameraCaptureSession_stateCallbacks mSessionCb{ this, nullptr, nullptr, nullptr};
 
     native_handle_t* mImgReaderAnw = nullptr;  // not owned by us.