LEADTOOLS Multimedia (Leadtools.MediaFoundation assembly)

ResetSource Method (ConvertCtrl)

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Example 



Resets the media source.
Syntax
'Declaration
 
Public Overridable Sub ResetSource() 
'Usage
 
Dim instance As ConvertCtrl
 
instance.ResetSource()
public virtual void ResetSource()
public:
virtual void ResetSource(); 
Remarks
This method will reset the media source to the default value of SourceObjectType.None . Users typically call this method to remove a media source reference from the convert module. If the method fails, an error is raised.

For more information, refer to the Error Codes.

Example
Copy Code  
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As ConvertCtrlForm = New ConvertCtrlForm()
Public Sub ResetSourceExample()
   ' reference the convert control
   Dim convertctrl As ConvertCtrl = _form.ConvertCtrl

   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ResetSourceExample.mp4")

   Try
      ' set the input and output files
      convertctrl.SourceFile = inFile
      convertctrl.TargetFile = outFile

      ' select MP4 target format
      convertctrl.TargetFormat = TargetFormatType.MP4

      ' select H264 video target format
      Dim index As Integer = -1
      Dim trgvideoformats As TargetVideoFormats = convertctrl.TargetFormats(convertctrl.TargetFormat).VideoFormats
      index = trgvideoformats.IndexOf("{34363248-0000-0010-8000-00AA00389B71}") ' H264
      trgvideoformats.Selection = index

      ' select AAC audio target format
      Dim trgaudioformats As TargetAudioFormats = convertctrl.TargetFormats(convertctrl.TargetFormat).AudioFormats
      index = trgaudioformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}") ' AAC
      trgaudioformats.Selection = index

      ' run it!
      convertctrl.StartConvert()

      ' changed our minds
      convertctrl.StopConvert()

      ' reset the source
      convertctrl.ResetSource()

      ' set the result to what we expect
      _result = (convertctrl.SourceFile Is Nothing)
   Catch e1 As Exception
      _result = False
   End Try
End Sub

Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media"
End Class
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public ConvertCtrlForm _form = new ConvertCtrlForm();
public void ResetSourceExample()
{
   // reference the convert control
   ConvertCtrl convertctrl = _form.ConvertCtrl;

   string inFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Source.avi");
   string outFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_ResetSourceExample.MP4");

   try
   {
      // set the input and output files
      convertctrl.SourceFile = inFile;
      convertctrl.TargetFile = outFile;

      // select the target format
      convertctrl.TargetFormat = TargetFormatType.MP4;

      // select video and audio target formats for the output
      int index = -1;
      TargetVideoFormats targetvideoformats = convertctrl.TargetFormats[convertctrl.TargetFormat].VideoFormats;
      index = targetvideoformats.IndexOf("{34363248-0000-0010-8000-00AA00389B71}");// H264
      targetvideoformats.Selection = index;
      TargetAudioFormats targetaudioformats = convertctrl.TargetFormats[convertctrl.TargetFormat].AudioFormats;
      index = targetaudioformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}");// AAC
      targetaudioformats.Selection = index;

      // run it!
      convertctrl.StartConvert();

      // changed our minds
      convertctrl.StopConvert();

      // reset the source
      convertctrl.ResetSource();

      // set the result to what we expect
      _result = (convertctrl.SourceFile == null);
   }
   catch (Exception)
   {
      _result = false;
   }
}

static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media";
}
Requirements

Target Platforms

See Also

Reference

ConvertCtrl Class
ConvertCtrl Members

 

 


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Leadtools.MediaFoundation requires a Multimedia or Multimedia Suite license and unlock key. For more information, refer to: LEADTOOLS Toolkit Features