LEADTOOLS Multimedia (Leadtools.MediaFoundation assembly)

SourceStream Property (PlayCtrl)

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Example 



Gets or sets the media source stream.
Syntax
'Declaration
 
Public Overridable Property SourceStream As Stream
'Usage
 
Dim instance As PlayCtrl
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.
Remarks
Use this property 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 an error exception. For more information, refer to the Error Codes. Note: When setting this property, the Play control must be in the stopped state.
Example
Copy Code  
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As PlayCtrlForm = New PlayCtrlForm()
Public Sub SourceStreamExample()
   ' reference the play control
   Dim playctrl As PlayCtrl = _form.PlayCtrl

   ' input and output file names
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.avi")

   Try
      ' turn off auto start
      playctrl.AutoStart = False

      ' set event handler
      AddHandler playctrl.StateChanged, AddressOf PlayCtrl_StateChanged

      ' set the source stream
      playctrl.SourceStream = New StreamReader(inFile).BaseStream

      ' set the allowed streams
      playctrl.AllowedStreams = StreamFormatType.Audio

      ' play it!
      playctrl.Run()
   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 playctrl.State = PlayState.Running
      Application.DoEvents()
   Loop
End Sub

Public Sub PlayCtrl_StateChanged(ByVal sender As Object, ByVal e As StateChangedEventArgs)
   ' set result
   If e.lastState = PlayState.Running AndAlso e.state = PlayState.Stopped Then
      _result = True
   End If
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 PlayCtrlForm _form = new PlayCtrlForm();
public void SourceStreamExample()
{
   // reference the play control
   PlayCtrl playctrl = _form.PlayCtrl;

   // input and output file names
   string inFile = Path.Combine(LEAD_VARS.MediaDir,"PlayCtrl_Source.avi");

   try
   {
      // turn off auto start
      playctrl.AutoStart = false;

      // set event handler
      playctrl.StateChanged += new StateChangedEventHandler(PlayCtrl_StateChanged);

      // set the source stream
      playctrl.SourceStream = new StreamReader(inFile).BaseStream;

      // set the allowed streams
      playctrl.AllowedStreams = StreamFormatType.Audio;

      // play it!
      playctrl.Run();
   }
   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 (playctrl.State == PlayState.Running)
      Application.DoEvents();
}

void PlayCtrl_StateChanged(object sender, StateChangedEventArgs e)
{
   // set the result to what we expect
   _result = (e.lastState == PlayState.Running && e.state == PlayState.Stopped);
}

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

Target Platforms

See Also

Reference

PlayCtrl Class
PlayCtrl Members
ResetSource Method

 

 


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