Selection Property (Compressors)

C#
Visual Basic
Objective-C
Java
C++

public int Selection {get; set;}

'Declaration

Public Property Selection As Integer

'Usage

Dim instance As Compressors
Dim value As Integer
 
instance.Selection = value
 
value = instance.Selection

public:
property int Selection {
   int get();
   void set (    int value);
}

Property Value

The zero-based index of the selected item. Use -1 to specify that the stream is not to be recompressed.

Playing audio or video data requires a decompressor. Note: For MPEG2 streams containing H.264, H265 or AAC encoded data, LEAD H264, H265 or AAC transcoders can be used to convert to ISO.

Assignment can raise an error exception. For more information, refer to the Error Codes.

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

Copy Code

Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub CompressorsExample()
   Dim inputName, inputFriendlyName As String
   Dim selection As Integer

   ' reference the capture control
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

   ' select a video device, use your device name here instead of Analog
   If capturectrl.VideoDevices("Analog") Is Nothing Then
      Throw New Exception("No Analog video tuner device available")
   End If

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

   ' get the video compressors object
   Dim compressors As VideoCompressors = capturectrl.VideoCompressors

   Try
      ' select an input by name if possible
      If Not compressors.Mpeg2 Is Nothing Then
         compressors.Mpeg2.Selected = True
      End If

      ' get the current selected input
      selection = compressors.Selection

      For Each cmp As Compressor In compressors
         ' get the compressor properties
         inputName = cmp.Name
         inputFriendlyName = cmp.FriendlyName
         Dim rel As CompressorReliability = cmp.Reliability

         ' if we found the video tuner input
         If inputFriendlyName = "LEAD H264 Encoder (4.0)" AndAlso rel = CompressorReliability.Stable Then
            ' select it and break
            cmp.Selected = True
            Exit For
         End If
      Next cmp

      ' set the result to what we expect
      _result = (selection <> compressors.Selection)

   Catch e1 As Exception
      _result = False
   End Try
End Sub

using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CompressorsExample()
{
   string inputName, inputFriendlyName;
   int selection;

   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   // select a video device, use your device's name here instead of Analog
   if (capturectrl.VideoDevices["Analog"] == null)
      throw new Exception("No Analog video tuner device available");

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

   // get the video compressors object
   VideoCompressors compressors = capturectrl.VideoCompressors;

   try
   {
      // select an input by name if possible
      if (compressors.Mpeg2 != null)
         compressors.Mpeg2.Selected = true;

      // get the current selected input
      selection = compressors.Selection;

      foreach (Compressor cmp in compressors)
      {
         // get the compressor properties
         inputName = cmp.Name;
         inputFriendlyName = cmp.FriendlyName;
         CompressorReliability rel = cmp.Reliability;

         // if we found the video tuner input
         if (inputFriendlyName == "LEAD H264 Encoder (4.0)"
            && rel == CompressorReliability.Stable)
         {
            // select it and break
            cmp.Selected = true;
            break;
         }
      }

      // set the result to what we expect
      _result = (selection != compressors.Selection);

   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

Compressors Class
Compressors Members