Camera: Add support for empty physical settings optimization

Empty individual physical settings should be allowed after
one initial successful request.

Bug: 72524845
Test: run vts --skip-all-system-status-check --skip-preconditions
--primary-abi-only --module VtsHalCameraProviderV2_4Target -l INFO

Change-Id: I18d22a56f5f0e6e1d81a6e8c844697c02bc343a1
diff --git a/camera/device/3.4/default/CameraDeviceSession.cpp b/camera/device/3.4/default/CameraDeviceSession.cpp
index f6c6b2b..423748a 100644
--- a/camera/device/3.4/default/CameraDeviceSession.cpp
+++ b/camera/device/3.4/default/CameraDeviceSession.cpp
@@ -378,7 +378,7 @@
 
         for (size_t i = 0; i < settingsCount; i++) {
             uint64_t settingsSize = request.physicalCameraSettings[i].fmqSettingsSize;
-            const camera_metadata_t *settings;
+            const camera_metadata_t *settings = nullptr;
             if (settingsSize > 0) {
                 physicalFmq.push_back(V3_2::CameraMetadata(settingsSize));
                 bool read = mRequestMetadataQueue->read(physicalFmq[i].data(), settingsSize);
@@ -400,6 +400,13 @@
                 ALOGE("%s: physical camera settings metadata is corrupt!", __FUNCTION__);
                 return Status::ILLEGAL_ARGUMENT;
             }
+
+            if (mFirstRequest && settings == nullptr) {
+                ALOGE("%s: Individual request settings must not be null for first request!",
+                        __FUNCTION__);
+                return Status::ILLEGAL_ARGUMENT;
+            }
+
             physicalCameraIds.push_back(request.physicalCameraSettings[i].physicalCameraId.c_str());
         }
     }