VideoProcAmp Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public virtual VideoProcAmp VideoProcAmp {get;}

'Declaration
 
Public Overridable ReadOnly Property VideoProcAmp As VideoProcAmp

'Usage
 
Dim instance As CaptureCtrl
Dim value As VideoProcAmp
 
value = instance.VideoProcAmp

public virtual VideoProcAmp VideoProcAmp {get;}

 get_VideoProcAmp();

public:
virtual property VideoProcAmp^ VideoProcAmp {
   VideoProcAmp^ get();
}

Property Value

A VideoProcAmp object.

Gets a VideoProcAmp object which enables the user to adjust the qualities of an incoming video signal, such as brightness, contrast, hue, saturation, gamma, and sharpness.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Public _result As Boolean = False
      Public _form As CaptureCtrlForm = New CaptureCtrlForm()
      Public _outFile As String = Path.Combine(LEAD_VARS.MediaDir, "VideoProcAmp_GetExample.avi")
      Public Sub GetExample()
         ' reference the capture control
         Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

         Try
            ' select the first device with analog in it's name
            ' Replace "Analog" with your video capture device name
            If capturectrl.VideoDevices("Analog") Is Nothing Then
               Throw New Exception("No Analog video devices available!")
            End If

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

            ' set a video compressor
            capturectrl.VideoCompressors.Mpeg2.Selected = True

            ' set the target file
            capturectrl.TargetFile = _outFile

            ' reference the video proc amp 
            Dim videoprocamp As VideoProcAmp = capturectrl.VideoProcAmp

            If Not videoprocamp Is Nothing Then
               ' set the auto brightness property 
               videoprocamp.AutoBrightness = True

               ' set to black and white
               videoprocamp.ColorEnable = False

               ' enable backlight compensation, if available
               videoprocamp.BacklightCompensation = True
            End If

            ' check for video capture available
            If capturectrl.IsModeAvailable(CaptureMode.Video) Then
               ' capture 15 seconds of video
               capturectrl.UseTimeLimit = True
               capturectrl.TimeLimit = 15

               ' subscribe to the compete event
               AddHandler capturectrl.Complete, AddressOf CaptureCtrl_Complete
               ' start the capture
               capturectrl.StartCapture(CaptureMode.Video)
            End If
         Catch e1 As Exception
            _result = False
         End Try

         ' 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
            Application.DoEvents()
         Loop
      End Sub

      Private Sub CaptureCtrl_Complete(ByVal sender As Object, ByVal e As EventArgs)
         ' set the result to what we expect
         _result = File.Exists(_outFile)
      End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
End Class

public bool _result = false;
      public CaptureCtrlForm _form = new CaptureCtrlForm();
      public string _outFile = Path.Combine(LEAD_VARS.MediaDir, "VideoProcAmp_GetExample.avi");
      public void GetExample()
      {
         // reference the capture control
         CaptureCtrl capturectrl = _form.CaptureCtrl;

         try
         {
            // select the first device with analog in it's name
            // Replace "Analog" with your video capture device name
            if (capturectrl.VideoDevices["Analog"] == null)
               throw new Exception("No Analog video devices available!");

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

            // set a video compressor
            capturectrl.VideoCompressors.Mpeg2.Selected = true;

            // set the target file
            capturectrl.TargetFile = _outFile;

            // reference the video proc amp 
            VideoProcAmp videoprocamp = capturectrl.VideoProcAmp;

            if (videoprocamp != null)
            {
               // set the auto brightness property 
               videoprocamp.AutoBrightness = true;

               // set to black and white
               videoprocamp.ColorEnable = false;

               // enable backlight compensation, if available
               videoprocamp.BacklightCompensation = true;
            }

            // check for video capture available
            if (capturectrl.IsModeAvailable(CaptureMode.Video))
            {
               // capture 15 seconds of video
               capturectrl.UseTimeLimit = true;
               capturectrl.TimeLimit = 15;

               // subscribe to the compete event
               capturectrl.Complete += new EventHandler(CaptureCtrl_Complete);
               // start the capture
               capturectrl.StartCapture(CaptureMode.Video);
            }
         }
         catch (Exception)
         {
            _result = false;
         }

         // 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)
            Application.DoEvents();
      }

      void CaptureCtrl_Complete(object sender, EventArgs e)
      {
         // set the result to what we expect
         _result = File.Exists(_outFile);
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

CaptureCtrl Class
CaptureCtrl Members