Public Function GetConnectedMediaType() As MediaType

Dim instance As SampleTarget
Dim value As MediaType
 
value = instance.GetConnectedMediaType()

public MediaType GetConnectedMediaType()

public:
MediaType^ GetConnectedMediaType(); 

Public _result As Boolean = False
Public _form As CaptureAndPlayCtrlForm = New CaptureAndPlayCtrlForm()
Public _captureTarget As SampleTarget
Public _playSource As SampleSource
Public Sub GetPortableTypeExample()
  ' reference the convert control
  Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
  Dim playctrl As PlayCtrl = _form.PlayCtrl

  ' This example demonstrates how to play a capture stream 
  ' using a play control and portable media types.

  Try
     ' set the source device
     If capturectrl.VideoDevices("Analog") Is Nothing Then
       Throw New Exception("No Analog video devices available!")
     End If

     capturectrl.VideoDevices("Analog").Selected = True

     ' set the preview
     capturectrl.Preview = True

     ' create a sample target object for the capture control
     _captureTarget = New SampleTarget()

     ' set the capture target to our sample target created earlier
     capturectrl.TargetObject = _captureTarget

     ' create a new sample source object for the play control
     _playSource = New SampleSource()

     ' set the video compressor 
     capturectrl.VideoCompressors.MCmpMJpeg.Selected = True

     '// for this example we will only capture 120 seconds of video
     capturectrl.UseTimeLimit = True
     capturectrl.TimeLimit = 120

     ' start the capture
     capturectrl.StartCapture(CaptureMode.Video)

     ' we could just assign the media type from target to source
     ' however, let's use the portable type to simulate
     ' the needed steps for remote playback
     Dim portableMediaType As Byte() = _captureTarget.GetConnectedMediaType().GetPortableType()

     ' initialize a new media type object with the portable type
     Dim mt As MediaType = New MediaType()
     mt.SetPortableType(portableMediaType)

     ' set the sample source media type
     _playSource.SetMediaType(mt)

     ' set the play controls sample source object
     playctrl.SourceObject = _playSource

     ' create a timer to drive the sample delivery
     AddHandler _form.TestTimer.Tick, AddressOf SampleDeliver_Tick
     _form.TestTimer.Interval = 33
     _form.TestTimer.Start()

     ' we'll loop on the state and pump messages for this example.
     ' but you should not need to if running from a Windows Forms application.
     Do While capturectrl.State = CaptureState.Running OrElse capturectrl.State = CaptureState.Paused OrElse capturectrl.State = CaptureState.Pending
       Application.DoEvents()
     Loop
  Catch e1 As Exception
     _result = False
  End Try
End Sub

Private Sub SampleDeliver_Tick(ByVal sender As Object, ByVal e As EventArgs)
  _form.TestTimer.Stop()

  Dim eos As Boolean = False
  Dim cs As MediaSample = Nothing

  Try
     cs = _captureTarget.GetSample(1000)
  Catch cex As COMException
     If cex.ErrorCode = CInt(ErrorCode.VFW_E_SAMPLE_REJECTED_EOS) Then
       eos = True
     Else
       Throw
     End If
  Catch ex As Exception
     Throw
  End Try

  If (Not eos) Then
     _playSource.DeliverSample(1000, cs)
     _form.TestTimer.Start()
  Else
     _playSource.DeliverEndOfStream(1000)
     _form.TestTimer.Stop()

     ' set the result
     _result = True
  End If
End Sub

public bool _result = false;
public CaptureAndPlayCtrlForm _form = new CaptureAndPlayCtrlForm();
public SampleTarget _captureTarget;
public SampleSource _playSource;
public void GetPortableTypeExample()
{
   // reference the convert control
   CaptureCtrl capturectrl = _form.CaptureCtrl;
   PlayCtrl playctrl = _form.PlayCtrl;

   // This example demonstrates how to play a capture stream 
   // using a play control and portable media types.

   try
   {
      // set the source device
      if (capturectrl.VideoDevices["Analog"] == null)
         throw new Exception("No Analog video devices available!");

      capturectrl.VideoDevices["Analog"].Selected = true;

      // set the preview
      capturectrl.Preview = true;

      // create a sample target object for the capture control
      _captureTarget = new SampleTarget();

      // set the capture target to our sample target created earlier
      capturectrl.TargetObject = _captureTarget;

      // create a new sample source object for the play control
      _playSource = new SampleSource();

      // set the video compressor 
      capturectrl.VideoCompressors.MCmpMJpeg.Selected = true;

      //// for this example we will only capture 120 seconds of video
      capturectrl.UseTimeLimit = true;
      capturectrl.TimeLimit = 120;

      // start the capture
      capturectrl.StartCapture(CaptureMode.Video);

      // we could just assign the media type from target to source
      // however, let's use the portable type to simulate
      // the needed steps for remote playback
      Byte[] portableMediaType = _captureTarget.GetConnectedMediaType().GetPortableType();

      // initialize a new media type object with the portable type
      MediaType mt = new MediaType();
      mt.SetPortableType(portableMediaType);

      // set the sample source media type
      _playSource.SetMediaType(mt);

      // set the play controls sample source object
      playctrl.SourceObject = _playSource;

      // create a timer to drive the sample delivery
      _form.TestTimer.Tick += new EventHandler(SampleDeliver_Tick);
      _form.TestTimer.Interval = 33;
      _form.TestTimer.Start();

      // we'll loop on the state and pump messages for this example.
      // but you should not need to if running from a Windows Forms application.
      while (capturectrl.State == CaptureState.Running
         || capturectrl.State == CaptureState.Paused
         || capturectrl.State == CaptureState.Pending)
         Application.DoEvents();
   }
   catch (Exception)
   {
      _result = false;
   }
}

void SampleDeliver_Tick(object sender, EventArgs e)
{
   _form.TestTimer.Stop();

   bool eos = false;
   MediaSample cs = null;

   try
   {
      cs = _captureTarget.GetSample(1000);
   }
   catch (COMException cex)
   {
      if (cex.ErrorCode == (int)ErrorCode.VFW_E_SAMPLE_REJECTED_EOS)
         eos = true;
      else
         throw;
   }
   catch (Exception ex)
   {
      throw;
   }

   if (!eos)
   {
      _playSource.DeliverSample(1000, cs);
      _form.TestTimer.Start();
   }
   else
   {
      _playSource.DeliverEndOfStream(1000);
      _form.TestTimer.Stop();

      // set the result
      _result = true;
   }
}