// Creates a prompt asking the user which video device to use (webcam, usb camera, etc...)
public void PromptVideoSource()
{
// If their is no video source
if (videoSourcePlayer == null)
{
// Create the video source player and add it to the form
videoSourcePlayer = new VideoSourcePlayer();
this.Controls.Add(videoSourcePlayer);
// Properties to add the video source player to the form
videoSourcePlayer.Dock = DockStyle.Fill;
videoSourcePlayer.Location = new Point(0, 0);
videoSourcePlayer.BorderColor = Color.Transparent;
videoSourcePlayer.BringToFront();
// Add the new frame callback to the source player
videoSourcePlayer.NewFrame += videoSourcePlayer_NewFrame;
// Force to keep the original source aspect ratio
videoSourcePlayer.KeepAspectRatio = true;
}
// Create the dialog box
VideoCaptureDeviceForm videoDialogForm = new VideoCaptureDeviceForm();
// If the dialog exited correctly, open the video source
if (videoDialogForm.ShowDialog(this) == DialogResult.OK)
{
// create video source
VideoCaptureDevice videoSource = videoDialogForm.VideoDevice;
// open the video device
OpenVideoSource(videoSource);
}
}