c# - Windows Phone 8.1应用程序MediaCapture下暴露

我试图直接从Windows Phone 8.1 Store App中的相机捕获图片。

我已经成功初始化了该设备的MediaCapture并可以拍照，但它们始终是黑色的或暴露在外。

有人可以指出我如何使相机自动曝光的方向，并且如果可能的话，当我致电photoManager.VideoDeviceController.FocusControl.FocusAsync()时遇到灾难性故障时，也会触发对焦吗？

最佳答案

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);

对于曝光，请尝试以下操作：

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