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SourceStream Property

Summary

Gets or sets the media source stream.

Syntax

C++/CLI

public virtual Stream SourceStream { get; set; }

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

Property Value

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

Remarks

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.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.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.mpeg"); 
public string _outFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_SourceStreamExample.avi"); 
 
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 compressors 
      convertctrl.VideoCompressors.Mpeg2.Selected = true; 
      convertctrl.AudioCompressors.AC3.Selected = true; 
 
      // set the target file and format 
      convertctrl.TargetStream = new MemoryStream(); 
      convertctrl.TargetFormat = TargetFormatType.AVI; 
 
      // subscribe to the complete event to check our result 
      convertctrl.Complete += new EventHandler(ConvertCtrl_Complete); 
 
      // set the allowed streams 
      convertctrl.AllowedStreams = StreamFormatType.AudioVideoCC; 
 
      // 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) 
{ 
   Stream ts = _form.ConvertCtrl.TargetStream; 
   FileStream fs = new FileStream(_outFile, FileMode.Create); 
   if (ts != null) 
   { 
      ts.Position = 0; 
      byte[] buffer = new byte[ts.Length + 1]; 
      int read = ts.Read(buffer, 0, (int)ts.Length); 
      fs.Write(buffer, 0, read); 
   } 
 
   // set the result 
   _result = File.Exists(_outFile); 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\LEADTOOLS23\Media"; 
}

Requirements

Target Platforms

Reference

ConvertCtrl Class

ConvertCtrl Members

ResetSource Method

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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