[camera_windows] Support camera on windows desktop platform

packages/camera/camera_windows/.gitignore

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+.DS_Store
+.dart_tool/
+
+.packages
+.pub/
+
+build/

packages/camera/camera_windows/.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 18116933e77adc82f80866c928266a5b4f1ed645
+  channel: stable
+
+project_type: plugin

packages/camera/camera_windows/AUTHORS

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+# Below is a list of people and organizations that have contributed
+# to the Flutter project. Names should be added to the list like so:
+#
+#   Name/Organization <email address>
+
+Google Inc.
+Joonas Kerttula <[email protected]>
+Codemate Ltd.

packages/camera/camera_windows/CHANGELOG.md

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+## 0.1.0
+
+* Initial release

packages/camera/camera_windows/LICENSE

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+Copyright 2013 The Flutter Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google Inc. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

packages/camera/camera_windows/README.md

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+# Camera Windows Plugin
+
+The Windows implementation of [`camera`][camera].
+
+*Note*: This plugin is under development.
+See [missing implementations and limitations](#missing-features-on-the-windows-platform).
+
+## Usage
+
+### Depend on the package
+
+This package is not an [endorsed][endorsed-federated-plugin]
+implementation of the [`camera`][camera] plugin, so you'll need to
+[add it explicitly][install].
+
+## Missing features on the Windows platform
+
+### Device orientation
+
+Device orientation detection
+is not yet implemented: [issue #97540][device-orientation-issue].
+
+### Pause and Resume video recording
+
+Pausing and resuming the video recording
+is not supported due to Windows API limitations.
+
+### Exposure mode, point and offset
+
+Support for explosure mode and offset
+is not yet implemented: [issue #97537][camera-control-issue].
+
+Exposure points are not supported due to
+limitations of the Windows API.
+
+### Focus mode and point
+
+Support for explosure mode and offset
+is not yet implemented: [issue #97537][camera-control-issue].
+
+### Flash mode
+
+Support for flash mode is not yet implemented: [issue #97537][camera-control-issue].
+
+Focus points are not supported due to
+current limitations of the Windows API.
+
+### Streaming of frames
+
+Support for image streaming is not yet implemented: [issue #97542][image-streams-issue].
+
+## Error handling
+
+Camera errors can be listened using the platform's `onCameraError` method.
+
+Listening to errors is important, and in certain situations,
+disposing of the camera is the only way to reset the situation.
+
+<!-- Links -->
+
+[camera]: https://pub.dev/packages/camera
+[endorsed-federated-plugin]: https://flutter.dev/docs/development/packages-and-plugins/developing-packages#endorsed-federated-plugin
+[install]: https://pub.dev/packages/camera_windows/install
+[camera-control-issue]: https://github.com/flutter/flutter/issues/97537
+[device-orientation-issue]: https://github.com/flutter/flutter/issues/97540
+[image-streams-issue]: https://github.com/flutter/flutter/issues/97542

packages/camera/camera_windows/example/.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

packages/camera/camera_windows/example/.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 18116933e77adc82f80866c928266a5b4f1ed645
+  channel: stable
+
+project_type: app

packages/camera/camera_windows/example/README.md

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+# camera_windows_example
+
+Demonstrates how to use the camera_windows plugin.

packages/camera/camera_windows/example/integration_test/camera_test.dart

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+// 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 'dart:async';
+import 'package:async/async.dart';
+import 'package:camera_platform_interface/camera_platform_interface.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+
+// Note that these integration tests do not currently cover
+// most features and code paths, as they can only be tested if
+// one or more cameras are available in the test environment.
+// Native unit tests with better coverage are available at
+// the native part of the plugin implementation.
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  group('initializeCamera', () {
+    testWidgets('throws exception if camera is not created',
+        (WidgetTester _) async {
+      final CameraPlatform camera = CameraPlatform.instance;
+
+      expect(() async => await camera.initializeCamera(1234),
+          throwsA(isA<CameraException>()));
+    });
+  });
+
+  group('takePicture', () {
+    testWidgets('throws exception if camera is not created',
+        (WidgetTester _) async {
+      final CameraPlatform camera = CameraPlatform.instance;
+
+      expect(() async => await camera.takePicture(1234),
+          throwsA(isA<PlatformException>()));
+    });
+  });
+
+  group('startVideoRecording', () {
+    testWidgets('throws exception if camera is not created',
+        (WidgetTester _) async {
+      final CameraPlatform camera = CameraPlatform.instance;
+
+      expect(() async => await camera.startVideoRecording(1234),
+          throwsA(isA<PlatformException>()));
+    });
+  });
+
+  group('stopVideoRecording', () {
+    testWidgets('throws exception if camera is not created',
+        (WidgetTester _) async {
+      final CameraPlatform camera = CameraPlatform.instance;
+
+      expect(() async => await camera.stopVideoRecording(1234),
+          throwsA(isA<PlatformException>()));
+    });
+  });
+
+  group('pausePreview', () {
+    testWidgets('throws exception if camera is not created',
+        (WidgetTester _) async {
+      final CameraPlatform camera = CameraPlatform.instance;
+
+      expect(() async => await camera.pausePreview(1234),
+          throwsA(isA<PlatformException>()));
+    });
+  });
+
+  group('resumePreview', () {
+    testWidgets('throws exception if camera is not created',
+        (WidgetTester _) async {
+      final CameraPlatform camera = CameraPlatform.instance;
+
+      expect(() async => await camera.resumePreview(1234),
+          throwsA(isA<PlatformException>()));
+    });
+  });
+
+  group('onDeviceOrientationChanged', () {
+    testWidgets('emits the initial DeviceOrientationChangedEvent',
+        (WidgetTester _) async {
+      final Stream<DeviceOrientationChangedEvent> eventStream =
+          CameraPlatform.instance.onDeviceOrientationChanged();
+
+      final StreamQueue<DeviceOrientationChangedEvent> streamQueue =
+          StreamQueue<DeviceOrientationChangedEvent>(eventStream);
+
+      expect(
+        await streamQueue.next,
+        equals(
+          const DeviceOrientationChangedEvent(
+            DeviceOrientation.landscapeRight,
+          ),
+        ),
+      );
+    });
+  });
+}