PreferredFilters Class

Summary

The PreferredFilters static class contains constant string values for predefined values that can be used to identify preferred filters. It contains the "Don't Care", "LEAD Default" strings as well as defines for the display names of the most common LEAD filters.

Syntax
C#
VB
C++
public sealed abstract class PreferredFilters 
Public MustInherit NotInheritable Class Constants.PreferredFilters  
public ref class Constants.PreferredFilters abstract sealed  
Remarks

The constants in this class are designed to be used with the ConvertCtrl.SetPreferredFilter, ConvertCtrl.GetPreferredFilter, PlayCtrl.GetPreferredFilter and PlayCtrl.SetPreferredFilter methods.

Example
C#
VB
using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public PlayCtrlForm _form = new PlayCtrlForm(); 
 
public void PlayerPreferredFiltersExample() 
{ 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   try 
   { 
      // set the preferred mpeg2 decoder to the LEAD default (which is the LEAD MPEG2 Decoder) 
      playctrl.SetPreferredFilter(PreferredFilter.MPEG2Decompressor, Constants.PreferredFilters.LEADDefault); 
 
      // the default mpeg2 decoder should be the LEAD MPEG2 decoder now 
      // the filter names are not case sensitive, so ignore case in the compare 
      _result = (string.Compare(playctrl.GetPreferredFilter(PreferredFilter.MPEG2Decompressor), 
                 Constants.PreferredFilters.MPEG2Decompressor, true) == 0); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As PlayCtrlForm = New PlayCtrlForm() 
 
Public Sub PlayerPreferredFiltersExample() 
   Try 
      ' reference the forms capture control 
      Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
      ' set the preferred mpeg2 decoder to the LEAD default (which is the LEAD MPEG2 Decoder) 
      playctrl.SetPreferredFilter(PreferredFilter.MPEG2Decompressor, 
                                  Leadtools.Multimedia.Constants.PreferredFilters.LEADDefault) 
 
      ' the default mpeg2 decoder should be the LEAD MPEG2 decoder now 
      ' the filter names are not case sensitive, so do ignore the case in the compare 
      _result = (String.Compare(playctrl.GetPreferredFilter(PreferredFilter.MPEG2Decompressor), 
                                Leadtools.Multimedia.Constants.PreferredFilters.MPEG2Decompressor, True) = 0) 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
Requirements

Target Platforms

Help Version 20.0.2019.11.25
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Leadtools.Multimedia Assembly