public void Dispose()
{
_selectedCamera = null;
if (_camControl.IsCapturing)
{
_camControl.StopCapture();
}
}
/// <summary>
/// Get available capture devices
/// </summary>
public void CheckCaptureDevices()
{
var captureDevices = webCameraControl.GetVideoCaptureDevices();
if (captureDevices != null && captureDevices.Count() > 0)
{
_captureDevice = captureDevices.First();
}
}
/// <summary>
/// Starts a capture.
/// </summary>
/// <param name="camera">The camera to capture from.</param>
/// <exception cref="ArgumentNullException">A null reference is passed as an argument.</exception>
/// <exception cref="Win32Exception">Failed to load the DirectShow utilities dll.</exception>
/// <exception cref="DirectShowException">Failed to run a video capture graph.</exception>
public void StartCapture(WebCameraId camera)
{
if (camera == null)
{
throw new ArgumentNullException();
}
if (!_captureGraphInitialized)
{
InitializeCaptureGraph();
_captureGraphInitialized = true;
}
if (IsCapturing)
{
if (_currentCamera == camera)
{
return;
}
StopCapture();
}
if (_currentCamera != null)
{
Proxy.ResetCaptureGraph();
_currentCamera = null;
}
Proxy.AddCaptureFilter(camera.DevicePath);
_currentCamera = camera;
try
{
Proxy.Start();
IsCapturing = true;
}
catch (DirectShowException)
{
Proxy.ResetCaptureGraph();
_currentCamera = null;
throw;
}
}
private Bitmap GetWebCamImage()
{
Bitmap image = null;
var webCameraControl = new WebCameraControl();
WebCameraId camera = null;
foreach (WebCameraId c in webCameraControl.GetVideoCaptureDevices())
{
if (c != null)
{
camera = c;
break;
}
}
if (camera != null)
{
webCameraControl.StartCapture(camera);
System.Threading.Thread.Sleep(2000);
image = webCameraControl.GetCurrentImage();
System.Threading.Thread.Sleep(250);
webCameraControl.StopCapture();
}
return(image);
}
public ComboBoxItem(WebCameraId id)
{
_id = id;
}
public ComboBoxItem(WebCameraId id)
{
_id = id;
}
// Method to perform all the steps to take a picture.
public void takePicture()
{
WebCameraControl control = new WebCameraControl();
WebCameraId camera = null;
if (control.GetVideoCaptureDevices().Count() > 0)
{
//Select the first camera we find. This can be more sophisticated.
camera = (WebCameraId)control.GetVideoCaptureDevices().First();
control.RenderSize = new System.Windows.Size(1920, 1080);
control.StartCapture(camera);
// This seems risky.
// TODO change this to a more secure method of waiting.
while (control.GetCurrentImage() == null)
{
}
// Take 50 images (about 2 seconds.) The camera should have focussed and exposed correctly in that time.
Image[] img = new Image[50];
BitmapImage image = new BitmapImage();
for (int i = 0; i < img.Length; i++)
{
img[i] = control.GetCurrentImage();
MemoryStream ms = new MemoryStream();
img[i].Save(ms, ImageFormat.Bmp);
ms.Position = 0;
image = new BitmapImage();
image.BeginInit();
ms.Seek(0, SeekOrigin.Begin);
image.StreamSource = ms;
image.EndInit();
}
// Store the image in DataDelegate.
DataDelegate.customerImage = image;
// Record the time taken.
DataDelegate.timeCustomerImageTaken = DateTime.Now;
control.StopCapture();
// TODO Fix the code below to allow saving of the file to disk and/or to database.
/*
* String path = System.IO.Path.Combine(Environment.CurrentDirectory, @"..\..\Assets\audio\PhotographComplete.wav");
* Audio.play(path);
*
* string filename = @"/GLASS/CustomerPhoto";
* string ext = @".png";
* var filePath = @Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), filename + ext);
*
* SaveFileDialog saveFile = new SaveFileDialog();
* saveFile.Filter = "PNG file |*.png";
* saveFile.FileName = filename + DateTime.Now.Date.Year + "-" + DateTime.Now.Date.Month + "-" + DateTime.Now.Date.Day + "-" + ext;
* saveFile.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
*
* if (saveFile.ShowDialog() == DialogResult.OK)
* {
* img.Last().Save(filePath);
* }
*/
}
}
/// <summary>
/// Stops a capture.
/// </summary>
/// <exception cref="InvalidOperationException">The control is not capturing a video stream.</exception>
/// <exception cref="DirectShowException">Failed to stop a video capture graph.</exception>
public void StopCapture()
{
if (!IsCapturing)
{
throw new InvalidOperationException();
}
Proxy.Stop();
IsCapturing = false;
Proxy.ResetCaptureGraph();
_currentCamera = null;
}
public WebCamModel(WebCameraId Cam, string Name)
{
this.Cam = Cam;
_name = Name;
}
/// <summary>
/// Stops a capture.
/// </summary>
/// <exception cref="InvalidOperationException">The control is not capturing a video stream.</exception>
/// <exception cref="DirectShowException">Failed to stop a video capture graph.</exception>
public void StopCapture()
{
if (!_isCapturing)
{
throw new InvalidOperationException();
}
Utilities.Stop();
_isCapturing = false;
Utilities.ResetCaptureGraph();
_currentCamera = null;
}
public WebcamItem(WebCameraId Cam)
{
this.Cam = Cam ?? throw new ArgumentNullException(nameof(Cam));
Name = Cam.Name;
}
private void OnStartButtonClick(object sender, RoutedEventArgs e)
{
_webcam = (WebCameraId)ComboBox.SelectedItem;
Preview.StartCapture(_webcam);
}
