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TargetStream Property

Summary

Gets or sets a reference to the media target stream.

Syntax

C++/CLI

public virtual Stream TargetStream { get; set; }

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

Property Value

A System.IO.Stream object for the target stream.

Remarks

The value of the TargetType property needs to be set to TargetObjectType.Stream for this method.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
public CaptureCtrl _capturectrl = null; 
public bool _result = false; 
 
public void TargetStreamExample() 
{ 
   // reference the capture control 
   _capturectrl = _form.CaptureCtrl; 
 
   // output file 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_TargetStreamExample.avi"); 
 
   try 
   { 
      _capturectrl.VideoDevices["USB"].Selected = true; 
      _capturectrl.TargetType = TargetObjectType.Stream; 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
   _capturectrl.FrameRate = 5;       // 5 frames per second  
   _capturectrl.UseFrameRate = true; 
   _capturectrl.TimeLimit = 2;      // just 2 seconds of capture time 
   _capturectrl.UseTimeLimit = true; 
   _capturectrl.TargetStream = new MemoryStream(); 
 
   // start the capture process 
   _capturectrl.StartCapture(CaptureMode.Video); 
 
   // 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) 
      Application.DoEvents(); 
   GetTargetData(); 
   _result = true; 
} 
 
//  This method will get the data of the target stream for the capture  
private void GetTargetData() 
{ 
   Stream ts = _capturectrl.TargetStream; 
   if (ts != null) 
   { 
      ts.Position = 0; 
      byte[] buffer = new byte[ts.Length + 1]; 
      int read = ts.Read(buffer, 0, (int)ts.Length); 
   } 
} 
 
public void TargetStream_Helper(object sender, EventArgs e) 
{ 
   // set result 
   _result = true; 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\LEADTOOLS23\Media"; 
}

Requirements

Target Platforms

Reference

CaptureCtrl Class

CaptureCtrl Members

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Help Version 23.0.2024.2.29

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies