c# - 如何使用c#在windows手机中使用前置摄像头捕捉视频

我正在开发一个 Windows 手机应用程序，它需要使用 C# 通过前置摄像头捕获视频，我可以在后置摄像头的帮助下捕获视频，但我需要在前置摄像头的帮助下进行捕获。我对此进行了很多搜索，但找不到相关答案。您的帮助将不胜感激。

    public partial class Movies : PhoneApplicationPage
    {

        VideoBrush myvideobrush;      //for capturing video.
        CaptureSource myvideosource;  //source for capturing video.
        VideoCaptureDevice mydevice;  //device for capturing video.
        FileSink myfilesink;          //for storing the video.
        private string isoVideoFileName = "CameraMovie.mp4";
        private IsolatedStorageFileStream isoVideoFile;


        public Movies()
        {

            InitializeComponent();
            if (myvideosource == null)
            {
                myvideosource = new CaptureSource();
                myfilesink = new FileSink();
                mydevice = CaptureDeviceConfiguration.GetDefaultVideoCaptureDevice();

                //System.Collections.ObjectModel.ReadOnlyCollection<System.Windows.Media.VideoCaptureDevice> supportedcams = CaptureDeviceConfiguration.GetAvailableVideoCaptureDevices();
                //mydevice = supportedcams.ElementAt(0);
            }
            if (mydevice != null)
            {
                myvideobrush = new VideoBrush();

                myvideobrush.SetSource(myvideosource);
                viewFinderRectangle.Fill = myvideobrush;
                stop_btn.IsEnabled = false;
                myvideosource.Start();
            }

        }
        public void startReccording()
        {
            start_btn.IsEnabled = false;
            stop_btn.IsEnabled = true;


            if (myvideosource.VideoCaptureDevice != null && myvideosource.State == CaptureState.Started)
            {
                myvideosource.Stop();
                myfilesink.CaptureSource = myvideosource;
                myfilesink.IsolatedStorageFileName = isoVideoFileName;
            }
            if (myvideosource.VideoCaptureDevice != null && myvideosource.State == CaptureState.Stopped)
            {

                myvideosource.Start();
            }
        }
        public void stopRecording()
        {


            if (myvideosource.VideoCaptureDevice != null && myvideosource.State == CaptureState.Started)
            {
                myvideosource.Stop();

                myfilesink.CaptureSource = null;
                myfilesink.IsolatedStorageFileName = null;
                videoPriview();
            }



        }
        public void videoPriview()
        {

            if (isoVideoFile != null)
            {
                videoPlayer.Play();
            }
            else
            {
                myvideosource.Stop();
                viewFinderRectangle.Fill = null;
                isoVideoFile = new IsolatedStorageFileStream(isoVideoFileName, FileMode.Open, FileAccess.Read, IsolatedStorageFile.GetUserStoreForApplication());
                videoPlayer.SetSource(isoVideoFile);
                videoPlayer.Play();
            }
            start_btn.IsEnabled = true;
            stop_btn.IsEnabled = false;

        }


        private void movies_goback_btn_Click(object sender, RoutedEventArgs e)
        {
            NavigationService.GoBack();
        }

        private void start_btn_Click(object sender, RoutedEventArgs e)
        {
            startReccording();
        }

        private void stop_btn_Click(object sender, RoutedEventArgs e)
        {
            stopRecording();
        }
    }
}

最佳答案

CaptureDeviceConfiguration.GetAvailableVideoCaptureDevices() 通过返回 ReadOnlyCollection<VideoCaptureDevice> 显示支持的摄像机列表

从 VideoCaptureDevice 和 CaptureDevice 继承的 CaptureDevice 具有属性 FriendlyName 或 IsDefaultDevice
对于我的诺基亚 FriendlyName 可能有值:

"Self portrait camera"

"Primary camera"

对于我的诺基亚 IsDefaultDevice 始终适用于 Primary camera
所以最终有助于找到前置摄像头的代码如下所示:

VideoCaptureDevice frontDevice = null;
ReadOnlyCollection<VideoCaptureDevice> devices = CaptureDeviceConfiguration.GetAvailableVideoCaptureDevices();

foreach (VideoCaptureDevice dev in devices)
{
    if (!dev.IsDefaultDevice)
    {
        device = dev;
    }
}

// for now device contains front-face camera

关于c# - 如何使用c#在windows手机中使用前置摄像头捕捉视频，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/27915634/