Что используется с CameraCaptureUi в предварительном просмотре windows 10

Question

Как вы можете использовать приложение камеры по умолчанию в окне предварительного просмотра Windows 10?

Answer 1

Для инициализации камеры

Debug.WriteLine("InitializeCameraAsync"); 

      if (_mediaCapture == null) 
      { 
       // Attempt to get the front camera if one is available, but use any camera device if not 
       var cameraDevice = await FindCameraDeviceByPanelAsync(Windows.Devices.Enumeration.Panel.Front); 

       if (cameraDevice == null) 
       { 
        Debug.WriteLine("No camera device found!"); 
        return; 
       } 

       // Create MediaCapture and its settings 
       _mediaCapture = new MediaCapture(); 

       // Register for a notification when video recording has reached the maximum time and when something goes wrong 
       _mediaCapture.RecordLimitationExceeded += MediaCapture_RecordLimitationExceeded; 
       _mediaCapture.Failed += MediaCapture_Failed; 

       var settings = new MediaCaptureInitializationSettings { VideoDeviceId = cameraDevice.Id }; 

       // Initialize MediaCapture 
       try 
       { 
        await _mediaCapture.InitializeAsync(settings); 
        _isInitialized = true; 
       } 
       catch (UnauthorizedAccessException) 
       { 
        Debug.WriteLine("The app was denied access to the camera"); 
       } 
       catch (Exception ex) 
       { 
        Debug.WriteLine("Exception when initializing MediaCapture with {0}: {1}", cameraDevice.Id, ex.ToString()); 
       } 

       // If initialization succeeded, start the preview 
       if (_isInitialized) 
       { 
        // Figure out where the camera is located 
        if (cameraDevice.EnclosureLocation == null || cameraDevice.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Unknown) 
        { 
         // No information on the location of the camera, assume it's an external camera, not integrated on the device 
         _externalCamera = true; 
        } 
        else 
        { 
         // Camera is fixed on the device 
         _externalCamera = false; 

         // Only mirror the preview if the camera is on the front panel 
         _mirroringPreview = (cameraDevice.EnclosureLocation.Panel == Windows.Devices.Enumeration.Panel.Front); 
        } 

Чтобы принять ПОС использование

await _mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), stream);