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SourceObject Property

Summary

Gets or sets the media source object.

Syntax

C++

public virtual object SourceObject { get; set; }

Public Overridable Property SourceObject As Object

public: 
virtual property Object^ SourceObject { 
   Object^ get(); 
   void set (    Object^ ); 
}

Property Value

A System.Object value representing the media source object.

Remarks

Use this property to assign a COM object as the media source for the conversion process. The object may be a SampleSource object or any other DirectShow source filter. The SourceType will be set to SourceObjectType.Object. 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

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public CaptureAndPlayCtrlForm _form = new CaptureAndPlayCtrlForm(); 
public SampleTarget _captureTarget; 
public SampleSource _playSource; 
 
public void GetPortableTypeExample() 
{ 
   // reference the convert control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   // This example demonstrates how to play a capture stream  
   // using a play control and portable media types. 
 
   try 
   { 
      // set the source device 
      if (capturectrl.VideoDevices["Analog"] == null) 
         throw new Exception("No Analog video devices available!"); 
 
      capturectrl.VideoDevices["Analog"].Selected = true; 
 
      // set the preview 
      capturectrl.Preview = true; 
 
      // create a sample target object for the capture control 
      _captureTarget = new SampleTarget(); 
 
      // set the capture target to our sample target created earlier 
      capturectrl.TargetObject = _captureTarget; 
 
      // create a new sample source object for the play control 
      _playSource = new SampleSource(); 
 
      // set the video compressor  
      capturectrl.VideoCompressors.MCmpMJpeg.Selected = true; 
 
      //// for this example we will only capture 120 seconds of video 
      capturectrl.UseTimeLimit = true; 
      capturectrl.TimeLimit = 120; 
 
      // start the capture 
      capturectrl.StartCapture(CaptureMode.Video); 
 
      // we could just assign the media type from target to source 
      // however, let's use the portable type to simulate 
      // the needed steps for remote playback 
      Byte[] portableMediaType = _captureTarget.GetConnectedMediaType().GetPortableType(); 
 
      // initialize a new media type object with the portable type 
      MediaType mt = new MediaType(); 
      mt.SetPortableType(portableMediaType); 
 
      // set the sample source media type 
      _playSource.SetMediaType(mt); 
 
      // set the play controls sample source object 
      playctrl.SourceObject = _playSource; 
 
      // create a timer to drive the sample delivery 
      _form.TestTimer.Tick += new EventHandler(SampleDeliver_Tick); 
      _form.TestTimer.Interval = 33; 
      _form.TestTimer.Start(); 
 
      // 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 (capturectrl.State == CaptureState.Running 
         || capturectrl.State == CaptureState.Paused 
         || capturectrl.State == CaptureState.Pending) 
         Application.DoEvents(); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
void SampleDeliver_Tick(object sender, EventArgs e) 
{ 
   _form.TestTimer.Stop(); 
 
   bool eos = false; 
   MediaSample cs = null; 
 
   try 
   { 
      cs = _captureTarget.GetSample(1000); 
   } 
   catch (COMException cex) 
   { 
      if (cex.ErrorCode == (int)ErrorCode.VFW_E_SAMPLE_REJECTED_EOS) 
         eos = true; 
      else 
         throw; 
   } 
   catch (Exception ex) 
   { 
      throw new Exception(ex.Message); 
   } 
 
   if (!eos) 
   { 
      _playSource.DeliverSample(1000, cs); 
      _form.TestTimer.Start(); 
   } 
   else 
   { 
      _playSource.DeliverEndOfStream(1000); 
      _form.TestTimer.Stop(); 
 
      // set the result 
      _result = true; 
   } 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureAndPlayCtrlForm = New CaptureAndPlayCtrlForm() 
Public _captureTarget As SampleTarget 
Public _playSource As SampleSource 
 
Public Sub GetPortableTypeExample() 
   ' reference the convert control 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
   ' This example demonstrates how to play a capture stream  
   ' using a play control and portable media types. 
 
   Try 
      ' set the source device 
      If capturectrl.VideoDevices("Analog") Is Nothing Then 
         Throw New Exception("No Analog video devices available!") 
      End If 
 
      capturectrl.VideoDevices("Analog").Selected = True 
 
      ' set the preview 
      capturectrl.Preview = True 
 
      ' create a sample target object for the capture control 
      _captureTarget = New SampleTarget() 
 
      ' set the capture target to our sample target created earlier 
      capturectrl.TargetObject = _captureTarget 
 
      ' create a new sample source object for the play control 
      _playSource = New SampleSource() 
 
      ' set the video compressor  
      capturectrl.VideoCompressors.MCmpMJpeg.Selected = True 
 
      '// for this example we will only capture 120 seconds of video 
      capturectrl.UseTimeLimit = True 
      capturectrl.TimeLimit = 120 
 
      ' start the capture 
      capturectrl.StartCapture(CaptureMode.Video) 
 
      ' we could just assign the media type from target to source 
      ' however, let's use the portable type to simulate 
      ' the needed steps for remote playback 
      Dim portableMediaType As Byte() = _captureTarget.GetConnectedMediaType().GetPortableType() 
 
      ' initialize a new media type object with the portable type 
      Dim mt As MediaType = New MediaType() 
      mt.SetPortableType(portableMediaType) 
 
      ' set the sample source media type 
      _playSource.SetMediaType(mt) 
 
      ' set the play controls sample source object 
      playctrl.SourceObject = _playSource 
 
      ' create a timer to drive the sample delivery 
      AddHandler _form.TestTimer.Tick, AddressOf SampleDeliver_Tick 
      _form.TestTimer.Interval = 33 
      _form.TestTimer.Start() 
 
      ' 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 capturectrl.State = CaptureState.Running _ 
       OrElse capturectrl.State = CaptureState.Paused OrElse capturectrl.State = CaptureState.Pending 
         Application.DoEvents() 
      Loop 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
 
Private Sub SampleDeliver_Tick(ByVal sender As Object, ByVal e As EventArgs) 
   _form.TestTimer.Stop() 
 
   Dim eos As Boolean = False 
   Dim cs As MediaSample = Nothing 
 
   Try 
      cs = _captureTarget.GetSample(1000) 
   Catch cex As COMException 
      If cex.ErrorCode = CInt(ErrorCode.VFW_E_SAMPLE_REJECTED_EOS) Then 
         eos = True 
      Else 
         Throw 
      End If 
   Catch ex As Exception 
      Throw 
   End Try 
 
   If (Not eos) Then 
      _playSource.DeliverSample(1000, cs) 
      _form.TestTimer.Start() 
   Else 
      _playSource.DeliverEndOfStream(1000) 
      _form.TestTimer.Stop() 
 
      ' set the result 
      _result = True 
   End If 
End Sub

Requirements

Target Platforms

Reference

PlayCtrl Class

PlayCtrl Members

ResetSource Method

Help Version 19.0.2017.10.27

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies