| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter/services.dart' show BinaryMessenger; |
| import 'package:meta/meta.dart' show immutable; |
| |
| import 'android_camera_camerax_flutter_api_impls.dart'; |
| import 'camera_info.dart'; |
| import 'camerax_library.g.dart'; |
| import 'instance_manager.dart'; |
| import 'java_object.dart'; |
| |
| /// The interface used to control the flow of data of use cases, control the |
| /// camera, and publich the state of the camera. |
| /// |
| /// See https://developer.android.com/reference/androidx/camera/core/Camera. |
| @immutable |
| class Camera extends JavaObject { |
| /// Constructs a [Camera] that is not automatically attached to a native object. |
| Camera.detached( |
| {BinaryMessenger? binaryMessenger, InstanceManager? instanceManager}) |
| : super.detached( |
| binaryMessenger: binaryMessenger, |
| instanceManager: instanceManager) { |
| _api = CameraHostApiImpl( |
| binaryMessenger: binaryMessenger, instanceManager: instanceManager); |
| AndroidCameraXCameraFlutterApis.instance.ensureSetUp(); |
| } |
| |
| late final CameraHostApiImpl _api; |
| |
| /// Retrieve the [CameraInfo] instance that contains information about this |
| /// instance. |
| Future<CameraInfo> getCameraInfo() async { |
| return _api.getCameraInfoFromInstance(this); |
| } |
| } |
| |
| /// Host API implementation of [Camera]. |
| class CameraHostApiImpl extends CameraHostApi { |
| /// Constructs a [CameraHostApiImpl]. |
| /// |
| /// An [instanceManager] is typically passed when a copy of an instance |
| /// contained by an [InstanceManager] is being created. |
| CameraHostApiImpl({this.binaryMessenger, InstanceManager? instanceManager}) |
| : super(binaryMessenger: binaryMessenger) { |
| this.instanceManager = instanceManager ?? JavaObject.globalInstanceManager; |
| } |
| |
| /// Receives binary data across the Flutter platform barrier. |
| /// |
| /// If it is null, the default BinaryMessenger will be used which routes to |
| /// the host platform. |
| final BinaryMessenger? binaryMessenger; |
| |
| /// Maintains instances stored to communicate with native language objects. |
| late final InstanceManager instanceManager; |
| |
| /// Gets the [CameraInfo] associated with the specified instance of [Camera]. |
| Future<CameraInfo> getCameraInfoFromInstance(Camera instance) async { |
| final int identifier = instanceManager.getIdentifier(instance)!; |
| final int cameraInfoId = await getCameraInfo(identifier); |
| |
| return instanceManager |
| .getInstanceWithWeakReference<CameraInfo>(cameraInfoId)!; |
| } |
| } |
| |
| /// Flutter API implementation of [Camera]. |
| class CameraFlutterApiImpl implements CameraFlutterApi { |
| /// Constructs a [CameraFlutterApiImpl]. |
| /// |
| /// If [binaryMessenger] is null, the default [BinaryMessenger] will be used, |
| /// which routes to the host platform. |
| /// |
| /// An [instanceManager] is typically passed when a copy of an instance |
| /// contained by an [InstanceManager] is being created. If left null, it |
| /// will default to the global instance defined in [JavaObject]. |
| CameraFlutterApiImpl({ |
| BinaryMessenger? binaryMessenger, |
| InstanceManager? instanceManager, |
| }) : _binaryMessenger = binaryMessenger, |
| _instanceManager = instanceManager ?? JavaObject.globalInstanceManager; |
| |
| /// Receives binary data across the Flutter platform barrier. |
| final BinaryMessenger? _binaryMessenger; |
| |
| /// Maintains instances stored to communicate with native language objects. |
| final InstanceManager _instanceManager; |
| |
| @override |
| void create(int identifier) { |
| _instanceManager.addHostCreatedInstance( |
| Camera.detached( |
| binaryMessenger: _binaryMessenger, instanceManager: _instanceManager), |
| identifier, |
| onCopy: (Camera original) { |
| return Camera.detached( |
| binaryMessenger: _binaryMessenger, |
| instanceManager: _instanceManager); |
| }, |
| ); |
| } |
| } |