[camerax] Modifies initialized camera info to reflect default AF/AE modes and the ability to set focus points for each (flutter#6109)

Modifies `CameraInitializedEvent` to
1. Set the initial exposure and focus modes to auto, since CameraX defaults to auto exposure mode and only supports auto focus mode without Camera2 interop
2. Sets the ability to set focus and exposure points to be true, since CameraX supports these by default

~Should land after flutter/packages#6059 so that these values reflect what is actually implemented on our end~ Done :)

Author: camsim99

packages/camera/camera_android_camerax/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.5.0+35
+
+* Modifies `CameraInitializedEvent` that is sent when the camera is initialized to indicate that the initial focus
+  and exposure modes are auto and that developers may set focus and exposure points.
+
 ## 0.5.0+34
 
 * Implements `setFocusPoint`, `setExposurePoint`, and `setExposureOffset`.

packages/camera/camera_android_camerax/lib/src/android_camera_camerax.dart

@@ -347,16 +347,13 @@ class AndroidCameraCameraX extends CameraPlatform {
     final ResolutionInfo previewResolutionInfo =
         await preview!.getResolutionInfo();
 
-    // Retrieve exposure and focus mode configurations:
-    // TODO(camsim99): Implement support for retrieving exposure mode configuration.
-    // https://github.com/flutter/flutter/issues/120468
+    // Mark auto-focus, auto-exposure and setting points for focus & exposure
+    // as available operations as CameraX does its best across devices to
+    // support these by default.
     const ExposureMode exposureMode = ExposureMode.auto;
-    const bool exposurePointSupported = false;
-
-    // TODO(camsim99): Implement support for retrieving focus mode configuration.
-    // https://github.com/flutter/flutter/issues/120467
     const FocusMode focusMode = FocusMode.auto;
-    const bool focusPointSupported = false;
+    const bool exposurePointSupported = true;
+    const bool focusPointSupported = true;
 
     cameraEventStreamController.add(CameraInitializedEvent(
         cameraId,

packages/camera/camera_android_camerax/pubspec.yaml

@@ -2,7 +2,7 @@ name: camera_android_camerax
 description: Android implementation of the camera plugin using the CameraX library.
 repository: https://github.com/flutter/packages/tree/main/packages/camera/camera_android_camerax
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.5.0+34
+version: 0.5.0+35
 
 environment:
   sdk: ^3.1.0

packages/camera/camera_android_camerax/test/android_camera_camerax_test.dart

@@ -755,19 +755,15 @@ void main() {
       startListeningForDeviceOrientationChange: (_, __) {},
     );
 
-    // TODO(camsim99): Modify this when camera configuration is supported and
-    // default values no longer being used.
-    // https://github.com/flutter/flutter/issues/120468
-    // https://github.com/flutter/flutter/issues/120467
     final CameraInitializedEvent testCameraInitializedEvent =
         CameraInitializedEvent(
             cameraId,
             resolutionWidth.toDouble(),
             resolutionHeight.toDouble(),
             ExposureMode.auto,
-            false,
+            true,
             FocusMode.auto,
-            false);
+            true);
 
     // Call createCamera.
     when(mockPreview.setSurfaceProvider()).thenAnswer((_) async => cameraId);