packages/camera/camera/example/integration_test/camera_test.dart - mirrors/packages - Git at Google

 // 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 'dart:io';
 import 'dart:ui';

 import 'package:camera/camera.dart';
 import 'package:flutter/painting.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:video_player/video_player.dart';

 void main() {
   late Directory testDir;

   IntegrationTestWidgetsFlutterBinding.ensureInitialized();

   setUpAll(() async {
     final Directory extDir = await getTemporaryDirectory();
     testDir = await Directory('${extDir.path}/test').create(recursive: true);
   });

   tearDownAll(() async {
     await testDir.delete(recursive: true);
   });

   final Map<ResolutionPreset, Size> presetExpectedSizes =
       <ResolutionPreset, Size>{
     ResolutionPreset.low:
         Platform.isAndroid ? const Size(240, 320) : const Size(288, 352),
     ResolutionPreset.medium:
         Platform.isAndroid ? const Size(480, 720) : const Size(480, 640),
     ResolutionPreset.high: const Size(720, 1280),
     ResolutionPreset.veryHigh: const Size(1080, 1920),
     ResolutionPreset.ultraHigh: const Size(2160, 3840),
     // Don't bother checking for max here since it could be anything.
   };

   /// Verify that [actual] has dimensions that are at least as large as
   /// [expectedSize]. Allows for a mismatch in portrait vs landscape. Returns
   /// whether the dimensions exactly match.
   bool assertExpectedDimensions(Size expectedSize, Size actual) {
     expect(actual.shortestSide, lessThanOrEqualTo(expectedSize.shortestSide));
     expect(actual.longestSide, lessThanOrEqualTo(expectedSize.longestSide));
     return actual.shortestSide == expectedSize.shortestSide &&
         actual.longestSide == expectedSize.longestSide;
   }

   // This tests that the capture is no bigger than the preset, since we have
   // automatic code to fall back to smaller sizes when we need to. Returns
   // whether the image is exactly the desired resolution.
   Future<bool> testCaptureImageResolution(
       CameraController controller, ResolutionPreset preset) async {
     final Size expectedSize = presetExpectedSizes[preset]!;

     // Take Picture
     final XFile file = await controller.takePicture();

     // Load picture
     final File fileImage = File(file.path);
     final Image image = await decodeImageFromList(fileImage.readAsBytesSync());

     // Verify image dimensions are as expected
     expect(image, isNotNull);
     return assertExpectedDimensions(
         expectedSize, Size(image.height.toDouble(), image.width.toDouble()));
   }

   testWidgets(
     'Capture specific image resolutions',
     (WidgetTester tester) async {
       final List<CameraDescription> cameras = await availableCameras();
       if (cameras.isEmpty) {
         return;
       }
       for (final CameraDescription cameraDescription in cameras) {
         bool previousPresetExactlySupported = true;
         for (final MapEntry<ResolutionPreset, Size> preset
             in presetExpectedSizes.entries) {
           final CameraController controller =
               CameraController(cameraDescription, preset.key);
           await controller.initialize();
           final bool presetExactlySupported =
               await testCaptureImageResolution(controller, preset.key);
           assert(!(!previousPresetExactlySupported && presetExactlySupported),
               'The camera took higher resolution pictures at a lower resolution.');
           previousPresetExactlySupported = presetExactlySupported;
           await controller.dispose();
         }
       }
     },
     // TODO(egarciad): Fix https://github.com/flutter/flutter/issues/93686.
     skip: true,
   );

   // This tests that the capture is no bigger than the preset, since we have
   // automatic code to fall back to smaller sizes when we need to. Returns
   // whether the image is exactly the desired resolution.
   Future<bool> testCaptureVideoResolution(
       CameraController controller, ResolutionPreset preset) async {
     final Size expectedSize = presetExpectedSizes[preset]!;

     // Take Video
     await controller.startVideoRecording();
     sleep(const Duration(milliseconds: 300));
     final XFile file = await controller.stopVideoRecording();

     // Load video metadata
     final File videoFile = File(file.path);
     final VideoPlayerController videoController =
         VideoPlayerController.file(videoFile);
     await videoController.initialize();
     final Size video = videoController.value.size;

     // Verify image dimensions are as expected
     expect(video, isNotNull);
     return assertExpectedDimensions(
         expectedSize, Size(video.height, video.width));
   }

   testWidgets(
     'Capture specific video resolutions',
     (WidgetTester tester) async {
       final List<CameraDescription> cameras = await availableCameras();
       if (cameras.isEmpty) {
         return;
       }
       for (final CameraDescription cameraDescription in cameras) {
         bool previousPresetExactlySupported = true;
         for (final MapEntry<ResolutionPreset, Size> preset
             in presetExpectedSizes.entries) {
           final CameraController controller =
               CameraController(cameraDescription, preset.key);
           await controller.initialize();
           await controller.prepareForVideoRecording();
           final bool presetExactlySupported =
               await testCaptureVideoResolution(controller, preset.key);
           assert(!(!previousPresetExactlySupported && presetExactlySupported),
               'The camera took higher resolution pictures at a lower resolution.');
           previousPresetExactlySupported = presetExactlySupported;
           await controller.dispose();
         }
       }
     },
     // TODO(egarciad): Fix https://github.com/flutter/flutter/issues/93686.
     skip: true,
   );

   testWidgets('Pause and resume video recording', (WidgetTester tester) async {
     final List<CameraDescription> cameras = await availableCameras();
     if (cameras.isEmpty) {
       return;
     }

     final CameraController controller = CameraController(
       cameras[0],
       ResolutionPreset.low,
       enableAudio: false,
     );

     await controller.initialize();
     await controller.prepareForVideoRecording();

     int startPause;
     int timePaused = 0;

     await controller.startVideoRecording();
     final int recordingStart = DateTime.now().millisecondsSinceEpoch;
     sleep(const Duration(milliseconds: 500));

     await controller.pauseVideoRecording();
     startPause = DateTime.now().millisecondsSinceEpoch;
     sleep(const Duration(milliseconds: 500));
     await controller.resumeVideoRecording();
     timePaused += DateTime.now().millisecondsSinceEpoch - startPause;

     sleep(const Duration(milliseconds: 500));

     await controller.pauseVideoRecording();
     startPause = DateTime.now().millisecondsSinceEpoch;
     sleep(const Duration(milliseconds: 500));
     await controller.resumeVideoRecording();
     timePaused += DateTime.now().millisecondsSinceEpoch - startPause;

     sleep(const Duration(milliseconds: 500));

     final XFile file = await controller.stopVideoRecording();
     final int recordingTime =
         DateTime.now().millisecondsSinceEpoch - recordingStart;

     final File videoFile = File(file.path);
     final VideoPlayerController videoController = VideoPlayerController.file(
       videoFile,
     );
     await videoController.initialize();
     final int duration = videoController.value.duration.inMilliseconds;
     await videoController.dispose();

     expect(duration, lessThan(recordingTime - timePaused));
   }, skip: !Platform.isAndroid);

   testWidgets(
     'Android image streaming',
     (WidgetTester tester) async {
       final List<CameraDescription> cameras = await availableCameras();
       if (cameras.isEmpty) {
         return;
       }

       final CameraController controller = CameraController(
         cameras[0],
         ResolutionPreset.low,
         enableAudio: false,
       );

       await controller.initialize();
       bool isDetecting = false;

       await controller.startImageStream((CameraImage image) {
         if (isDetecting) {
           return;
         }

         isDetecting = true;

         expectLater(image, isNotNull).whenComplete(() => isDetecting = false);
       });

       expect(controller.value.isStreamingImages, true);

       sleep(const Duration(milliseconds: 500));

       await controller.stopImageStream();
       await controller.dispose();
     },
     skip: !Platform.isAndroid,
   );

   /// Start streaming with specifying the ImageFormatGroup.
   Future<CameraImage> startStreaming(List<CameraDescription> cameras,
       ImageFormatGroup? imageFormatGroup) async {
     final CameraController controller = CameraController(
       cameras.first,
       ResolutionPreset.low,
       enableAudio: false,
       imageFormatGroup: imageFormatGroup,
     );

     await controller.initialize();
     final Completer<CameraImage> completer = Completer<CameraImage>();

     await controller.startImageStream((CameraImage image) {
       if (!completer.isCompleted) {
         Future<void>(() async {
           await controller.stopImageStream();
           await controller.dispose();
         }).then((Object? value) {
           completer.complete(image);
         });
       }
     });
     return completer.future;
   }

   testWidgets('Set description while recording', (WidgetTester tester) async {
     final List<CameraDescription> cameras = await availableCameras();
     if (cameras.length < 2) {
       return;
     }

     final CameraController controller = CameraController(
       cameras[0],
       ResolutionPreset.low,
       enableAudio: false,
     );

     await controller.initialize();
     await controller.prepareForVideoRecording();

     await controller.startVideoRecording();
     await controller.setDescription(cameras[1]);

     expect(controller.description, cameras[1]);
   });

   testWidgets('Set description', (WidgetTester tester) async {
     final List<CameraDescription> cameras = await availableCameras();
     if (cameras.length < 2) {
       return;
     }

     final CameraController controller = CameraController(
       cameras[0],
       ResolutionPreset.low,
       enableAudio: false,
     );

     await controller.initialize();
     await controller.setDescription(cameras[1]);

     expect(controller.description, cameras[1]);
   });

   testWidgets(
     'iOS image streaming with imageFormatGroup',
     (WidgetTester tester) async {
       final List<CameraDescription> cameras = await availableCameras();
       if (cameras.isEmpty) {
         return;
       }

       CameraImage image = await startStreaming(cameras, null);
       expect(image, isNotNull);
       expect(image.format.group, ImageFormatGroup.bgra8888);
       expect(image.planes.length, 1);

       image = await startStreaming(cameras, ImageFormatGroup.yuv420);
       expect(image, isNotNull);
       expect(image.format.group, ImageFormatGroup.yuv420);
       expect(image.planes.length, 2);

       image = await startStreaming(cameras, ImageFormatGroup.bgra8888);
       expect(image, isNotNull);
       expect(image.format.group, ImageFormatGroup.bgra8888);
       expect(image.planes.length, 1);
     },
     skip: !Platform.isIOS,
   );
 }
	// 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 'dart:io';
	import 'dart:ui';

	import 'package:camera/camera.dart';
	import 'package:flutter/painting.dart';
	import 'package:flutter_test/flutter_test.dart';
	import 'package:integration_test/integration_test.dart';
	import 'package:path_provider/path_provider.dart';
	import 'package:video_player/video_player.dart';

	void main() {
	late Directory testDir;

	IntegrationTestWidgetsFlutterBinding.ensureInitialized();

	setUpAll(() async {
	final Directory extDir = await getTemporaryDirectory();
	testDir = await Directory('${extDir.path}/test').create(recursive: true);
	});

	tearDownAll(() async {
	await testDir.delete(recursive: true);
	});

	final Map<ResolutionPreset, Size> presetExpectedSizes =
	<ResolutionPreset, Size>{
	ResolutionPreset.low:
	Platform.isAndroid ? const Size(240, 320) : const Size(288, 352),
	ResolutionPreset.medium:
	Platform.isAndroid ? const Size(480, 720) : const Size(480, 640),
	ResolutionPreset.high: const Size(720, 1280),
	ResolutionPreset.veryHigh: const Size(1080, 1920),
	ResolutionPreset.ultraHigh: const Size(2160, 3840),
	// Don't bother checking for max here since it could be anything.
	};

	/// Verify that [actual] has dimensions that are at least as large as
	/// [expectedSize]. Allows for a mismatch in portrait vs landscape. Returns
	/// whether the dimensions exactly match.
	bool assertExpectedDimensions(Size expectedSize, Size actual) {
	expect(actual.shortestSide, lessThanOrEqualTo(expectedSize.shortestSide));
	expect(actual.longestSide, lessThanOrEqualTo(expectedSize.longestSide));
	return actual.shortestSide == expectedSize.shortestSide &&
	actual.longestSide == expectedSize.longestSide;
	}

	// This tests that the capture is no bigger than the preset, since we have
	// automatic code to fall back to smaller sizes when we need to. Returns
	// whether the image is exactly the desired resolution.
	Future<bool> testCaptureImageResolution(
	CameraController controller, ResolutionPreset preset) async {
	final Size expectedSize = presetExpectedSizes[preset]!;

	// Take Picture
	final XFile file = await controller.takePicture();

	// Load picture
	final File fileImage = File(file.path);
	final Image image = await decodeImageFromList(fileImage.readAsBytesSync());

	// Verify image dimensions are as expected
	expect(image, isNotNull);
	return assertExpectedDimensions(
	expectedSize, Size(image.height.toDouble(), image.width.toDouble()));
	}

	testWidgets(
	'Capture specific image resolutions',
	(WidgetTester tester) async {
	final List<CameraDescription> cameras = await availableCameras();
	if (cameras.isEmpty) {
	return;
	}
	for (final CameraDescription cameraDescription in cameras) {
	bool previousPresetExactlySupported = true;
	for (final MapEntry<ResolutionPreset, Size> preset
	in presetExpectedSizes.entries) {
	final CameraController controller =
	CameraController(cameraDescription, preset.key);
	await controller.initialize();
	final bool presetExactlySupported =
	await testCaptureImageResolution(controller, preset.key);
	assert(!(!previousPresetExactlySupported && presetExactlySupported),
	'The camera took higher resolution pictures at a lower resolution.');
	previousPresetExactlySupported = presetExactlySupported;
	await controller.dispose();
	}
	}
	},
	// TODO(egarciad): Fix https://github.com/flutter/flutter/issues/93686.
	skip: true,
	);

	// This tests that the capture is no bigger than the preset, since we have
	// automatic code to fall back to smaller sizes when we need to. Returns
	// whether the image is exactly the desired resolution.
	Future<bool> testCaptureVideoResolution(
	CameraController controller, ResolutionPreset preset) async {
	final Size expectedSize = presetExpectedSizes[preset]!;

	// Take Video
	await controller.startVideoRecording();
	sleep(const Duration(milliseconds: 300));
	final XFile file = await controller.stopVideoRecording();

	// Load video metadata
	final File videoFile = File(file.path);
	final VideoPlayerController videoController =
	VideoPlayerController.file(videoFile);
	await videoController.initialize();
	final Size video = videoController.value.size;

	// Verify image dimensions are as expected
	expect(video, isNotNull);
	return assertExpectedDimensions(
	expectedSize, Size(video.height, video.width));
	}

	testWidgets(
	'Capture specific video resolutions',
	(WidgetTester tester) async {
	final List<CameraDescription> cameras = await availableCameras();
	if (cameras.isEmpty) {
	return;
	}
	for (final CameraDescription cameraDescription in cameras) {
	bool previousPresetExactlySupported = true;
	for (final MapEntry<ResolutionPreset, Size> preset
	in presetExpectedSizes.entries) {
	final CameraController controller =
	CameraController(cameraDescription, preset.key);
	await controller.initialize();
	await controller.prepareForVideoRecording();
	final bool presetExactlySupported =
	await testCaptureVideoResolution(controller, preset.key);
	assert(!(!previousPresetExactlySupported && presetExactlySupported),
	'The camera took higher resolution pictures at a lower resolution.');
	previousPresetExactlySupported = presetExactlySupported;
	await controller.dispose();
	}
	}
	},
	// TODO(egarciad): Fix https://github.com/flutter/flutter/issues/93686.
	skip: true,
	);

	testWidgets('Pause and resume video recording', (WidgetTester tester) async {
	final List<CameraDescription> cameras = await availableCameras();
	if (cameras.isEmpty) {
	return;
	}

	final CameraController controller = CameraController(
	cameras[0],
	ResolutionPreset.low,
	enableAudio: false,
	);

	await controller.initialize();
	await controller.prepareForVideoRecording();

	int startPause;
	int timePaused = 0;

	await controller.startVideoRecording();
	final int recordingStart = DateTime.now().millisecondsSinceEpoch;
	sleep(const Duration(milliseconds: 500));

	await controller.pauseVideoRecording();
	startPause = DateTime.now().millisecondsSinceEpoch;
	sleep(const Duration(milliseconds: 500));
	await controller.resumeVideoRecording();
	timePaused += DateTime.now().millisecondsSinceEpoch - startPause;

	sleep(const Duration(milliseconds: 500));

	await controller.pauseVideoRecording();
	startPause = DateTime.now().millisecondsSinceEpoch;
	sleep(const Duration(milliseconds: 500));
	await controller.resumeVideoRecording();
	timePaused += DateTime.now().millisecondsSinceEpoch - startPause;

	sleep(const Duration(milliseconds: 500));

	final XFile file = await controller.stopVideoRecording();
	final int recordingTime =
	DateTime.now().millisecondsSinceEpoch - recordingStart;

	final File videoFile = File(file.path);
	final VideoPlayerController videoController = VideoPlayerController.file(
	videoFile,
	);
	await videoController.initialize();
	final int duration = videoController.value.duration.inMilliseconds;
	await videoController.dispose();

	expect(duration, lessThan(recordingTime - timePaused));
	}, skip: !Platform.isAndroid);

	testWidgets(
	'Android image streaming',
	(WidgetTester tester) async {
	final List<CameraDescription> cameras = await availableCameras();
	if (cameras.isEmpty) {
	return;
	}

	final CameraController controller = CameraController(
	cameras[0],
	ResolutionPreset.low,
	enableAudio: false,
	);

	await controller.initialize();
	bool isDetecting = false;

	await controller.startImageStream((CameraImage image) {
	if (isDetecting) {
	return;
	}

	isDetecting = true;

	expectLater(image, isNotNull).whenComplete(() => isDetecting = false);
	});

	expect(controller.value.isStreamingImages, true);

	sleep(const Duration(milliseconds: 500));

	await controller.stopImageStream();
	await controller.dispose();
	},
	skip: !Platform.isAndroid,
	);

	/// Start streaming with specifying the ImageFormatGroup.
	Future<CameraImage> startStreaming(List<CameraDescription> cameras,
	ImageFormatGroup? imageFormatGroup) async {
	final CameraController controller = CameraController(
	cameras.first,
	ResolutionPreset.low,
	enableAudio: false,
	imageFormatGroup: imageFormatGroup,
	);

	await controller.initialize();
	final Completer<CameraImage> completer = Completer<CameraImage>();

	await controller.startImageStream((CameraImage image) {
	if (!completer.isCompleted) {
	Future<void>(() async {
	await controller.stopImageStream();
	await controller.dispose();
	}).then((Object? value) {
	completer.complete(image);
	});
	}
	});
	return completer.future;
	}

	testWidgets('Set description while recording', (WidgetTester tester) async {
	final List<CameraDescription> cameras = await availableCameras();
	if (cameras.length < 2) {
	return;
	}

	final CameraController controller = CameraController(
	cameras[0],
	ResolutionPreset.low,
	enableAudio: false,
	);

	await controller.initialize();
	await controller.prepareForVideoRecording();

	await controller.startVideoRecording();
	await controller.setDescription(cameras[1]);

	expect(controller.description, cameras[1]);
	});

	testWidgets('Set description', (WidgetTester tester) async {
	final List<CameraDescription> cameras = await availableCameras();
	if (cameras.length < 2) {
	return;
	}

	final CameraController controller = CameraController(
	cameras[0],
	ResolutionPreset.low,
	enableAudio: false,
	);

	await controller.initialize();
	await controller.setDescription(cameras[1]);

	expect(controller.description, cameras[1]);
	});

	testWidgets(
	'iOS image streaming with imageFormatGroup',
	(WidgetTester tester) async {
	final List<CameraDescription> cameras = await availableCameras();
	if (cameras.isEmpty) {
	return;
	}

	CameraImage image = await startStreaming(cameras, null);
	expect(image, isNotNull);
	expect(image.format.group, ImageFormatGroup.bgra8888);
	expect(image.planes.length, 1);

	image = await startStreaming(cameras, ImageFormatGroup.yuv420);
	expect(image, isNotNull);
	expect(image.format.group, ImageFormatGroup.yuv420);
	expect(image.planes.length, 2);

	image = await startStreaming(cameras, ImageFormatGroup.bgra8888);
	expect(image, isNotNull);
	expect(image.format.group, ImageFormatGroup.bgra8888);
	expect(image.planes.length, 1);
	},
	skip: !Platform.isIOS,
	);
	}