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CaptureDeviceMulticastProvider Class
WebcamMulticastProvider allows the reuse of capture devices by buffering retrieved frames for the duration of a picture. For clients to receive frames each CaptureDeviceMulticastProviderClient instance must add itself to the provider.
Inheritance Hierarchy
SystemObject
  StreamCoders.DevicesCaptureDeviceMulticastProvider

Namespace: StreamCoders.Devices
Assembly: MediaBase (in MediaBase.dll) Version: 2.0.5.0 (2.0.5.0)
Syntax
Copy
public class CaptureDeviceMulticastProvider

The CaptureDeviceMulticastProvider type exposes the following members.

Constructors
  NameDescription
Public methodCaptureDeviceMulticastProvider
Constructs instance of a provider. Multiple instances of CaptureDeviceMulticastProvider with the same capture device are not permitted.
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Properties
  NameDescription
Public propertyCaptureDevice
Gets the capture device used in this instance of the multicast provider.
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Methods
  NameDescription
Public methodAddClient
Adds a client to the provider.
Public methodRemoveClient
Removes a client from the provider.
Public methodStart
Starts this CaptureDeviceMulticastProvider.
Public methodStop
Stops this CaptureDeviceMulticastProvider.
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Extension Methods
  NameDescription
Public Extension MethodCopyOverloaded.
Creates a copy of the object.
(Defined by ObjectExtensions.)
Public Extension MethodCopy(Object)Overloaded.
Creates a deep copy of the object using the supplied object as a target for the copy operation.
(Defined by ObjectExtensions.)
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Examples
Example
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static void Main(string[] args)
        {
            CamCapture cam = new CamCapture();
            var devices = cam.GetDeviceList();

            var metrics = cam.SelectDevice(devices[0]);

            cam.SelectMetrics(metrics[1]);

            Debug.Assert(cam.Start());

            CaptureDeviceMulticastProvider provider = new CaptureDeviceMulticastProvider(cam, metrics[1]);

            Debug.Assert(provider.Start());

            List<CaptureDeviceMulticastProviderClient> clients = new List<CaptureDeviceMulticastProviderClient>();
            clients.Add(provider.AddClient(new CaptureDeviceMulticastProviderClient()
                {
                    Width = 1024,
                    Height = 768
                }));
            clients.Add(provider.AddClient(new CaptureDeviceMulticastProviderClient()
            {
                Width = 352,
                Height = 288
            }));
            clients.Add(provider.AddClient(new CaptureDeviceMulticastProviderClient()
            {
                Width = 176,
                Height = 144
            }));

            while (true)
            {
                foreach (var client in clients)
                {
                    var pic = client.GetFrame();

                    if (pic == null)
                    {
                        Console.WriteLine("picture is null");
                    }
                    else
                        Console.WriteLine("{0}, {1}x{2}, SizeIncludingHeader: {3}, Start: {4}, End {5}", client.Id, client.Width, client.Height, pic.Buffer.Count, pic.StartTime, pic.EndTime);
                }

                Thread.Sleep(1000);
            }

        }
See Also