SourceStream Property (ConvertCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Property SourceStream As Stream

'Usage
 
Dim instance As ConvertCtrl
Dim value As Stream
 
instance.SourceStream = value
 
value = instance.SourceStream

public virtual Stream SourceStream {get; set;}

public:
virtual property Stream^ SourceStream {
   Stream^ get();
   void set (    Stream^ value);
}

Property Value

A System.IO.Stream object for the media source stream.

This property allows the user to assign a Stream derived object as the media source for the conversion process. The SourceType will be set to SourceObjectType.Stream.

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

Note: When setting this property, the convert control must be in the stopped state.

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

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As ConvertCtrlForm = New ConvertCtrlForm()
' input and output file names
Public _inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
Public _outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_SourceStreamExample.wmv")

Public Sub SourceStreamExample()
   ' reference the convert control
   Dim convertctrl As ConvertCtrl = _form.ConvertCtrl

   Try
      ' set the source stream
      convertctrl.SourceStream = New StreamReader(_inFile).BaseStream

      ' set the target file
      convertctrl.TargetFile = _outFile

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

      ' select video and audio target formats for the output
      Dim index As Integer = -1
      Dim trgvideoformats As TargetVideoFormats = convertctrl.TargetFormats(convertctrl.TargetFormat).VideoFormats
      index = trgvideoformats.IndexOf("{33564D57-0000-0010-8000-00AA00389B71}") ' Windows Media Video 9 (WMV)
      trgvideoformats.Selection = index
      Dim trgaudioformats As TargetAudioFormats = convertctrl.TargetFormats(convertctrl.TargetFormat).AudioFormats
      index = trgaudioformats.IndexOf("{00000161-0000-0010-8000-00AA00389B71}") ' Windows Media Audio (WMA)
      trgaudioformats.Selection = index

      ' subscribe to the complete event to check our result
      AddHandler convertctrl.Complete, AddressOf ConvertCtrl_Complete

      ' set the allowed streams
      convertctrl.AllowedStreams = StreamFormatType.Video

      ' convert it!
      convertctrl.StartConvert()
   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 convertctrl.State = ConvertState.Running
      Application.DoEvents()
   Loop
End Sub

Private Sub ConvertCtrl_Complete(ByVal sender As Object, ByVal e As EventArgs)
   ' set the result
   _result = File.Exists(_outFile)
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();
// input and output file names
public string _inFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Source.avi");
public string _outFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_SourceStreamExample.WMV");

public void SourceStreamExample()
{
   // reference the convert control
   ConvertCtrl convertctrl = _form.ConvertCtrl;

   try
   {
      // set the source stream
      convertctrl.SourceStream = new StreamReader(_inFile).BaseStream;

      // select video and audio target formats for the output
      int index = -1;
      TargetVideoFormats targetvideoformats = convertctrl.TargetFormats[convertctrl.TargetFormat].VideoFormats;
      index = targetvideoformats.IndexOf("{33564D57-0000-0010-8000-00AA00389B71}");// Windows Media Video 9 (WMV)
      targetvideoformats.Selection = index;
      TargetAudioFormats targetaudioformats = convertctrl.TargetFormats[convertctrl.TargetFormat].AudioFormats;
      index = targetaudioformats.IndexOf("{00000161-0000-0010-8000-00AA00389B71}");// Windows Media Audio (WMA)
      targetaudioformats.Selection = index;

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

      // set the target file and format
      convertctrl.TargetFile = _outFile;

      // subscribe to the complete event to check our result
      convertctrl.Complete += new EventHandler(ConvertCtrl_Complete);

      // set the allowed streams
      convertctrl.AllowedStreams = StreamFormatType.Video;

      // convert it!
      convertctrl.StartConvert();
   }
   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 (convertctrl.State == ConvertState.Running)
      Application.DoEvents();
}

void ConvertCtrl_Complete(object sender, EventArgs e)
{
   // set the result
   _result = File.Exists(_outFile);
}

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

Target Platforms

Reference

ConvertCtrl Class
ConvertCtrl Members
ResetSource Method