暴露在Windows Phone 8.1 app MediaCapture下

Question

我正试图在Windows Phone 8.1 Store App中直接从相机捕捉图片。

我已成功为设备初始化MediaCapture并拍摄照片，但它们总是黑色或曝光方式。

有人能指出我如何让​​相机自动曝光，如果可能的话也引发焦点，因为当我拨打photoManager.VideoDeviceController.FocusControl.FocusAsync()时我会遇到灾难性的失败吗？

Answer 1

对于自动对焦，我使用以下代码：

mediaCapture = new MediaCapture();
var settings = new MediaCaptureInitializationSettings();
settings.StreamingCaptureMode = StreamingCaptureMode.Video;
settings.PhotoCaptureSource = PhotoCaptureSource.VideoPreview;

await mediaCapture.InitializeAsync(settings);

var focusSettings = new FocusSettings();
focusSettings.AutoFocusRange = AutoFocusRange.FullRange;
focusSettings.Mode = FocusMode.Auto;
focusSettings.WaitForFocus = true;
focusSettings.DisableDriverFallback = false;

mediaCapture.VideoDeviceController.FocusControl.Configure(focusSettings);

曝光，试试这个：

await mediaCapture.VideoDeviceController.ExposureControl.SetAutoAsync(true);