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Selection Property

Summary

Gets or sets the zero-based index of the selected Compressor item.

Syntax

C++/CLI

public int Selection { get; set; }

public: 
property int Selection { 
   int get(); 
   void set (    int ); 
}

Property Value

The zero-based index of the selected item. Use -1 to specify that the stream is not to be recompressed.

Remarks

Playing audio or video data requires a decompressor. Note: For MPEG2 streams containing H.264, H265 or AAC encoded data, LEAD H264, H265 or AAC transcoders can be used to convert to ISO. Assignment can raise an error exception. For more information, refer to the Error Codes.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void CompressorsExample() 
{ 
   string inputName, inputFriendlyName; 
   int selection; 
 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   // select a video device, use your device's name here instead of Analog 
   if (capturectrl.VideoDevices["Analog"] == null) 
      throw new Exception("No Analog video tuner device available"); 
 
   capturectrl.VideoDevices["Analog"].Selected = true; 
 
   // get the video compressors object 
   VideoCompressors compressors = capturectrl.VideoCompressors; 
 
   try 
   { 
      // select an input by name if possible 
      if (compressors.Mpeg2 != null) 
         compressors.Mpeg2.Selected = true; 
 
      // get the current selected input 
      selection = compressors.Selection; 
 
      foreach (Compressor cmp in compressors) 
      { 
         // get the compressor properties 
         inputName = cmp.Name; 
         inputFriendlyName = cmp.FriendlyName; 
         CompressorReliability rel = cmp.Reliability; 
 
         // if we found the video tuner input 
         if (inputFriendlyName == "LEAD H264 Encoder (4.0)" 
            && rel == CompressorReliability.Stable) 
         { 
            // select it and break 
            cmp.Selected = true; 
            break; 
         } 
      } 
 
      // set the result to what we expect 
      _result = (selection != compressors.Selection); 
 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Requirements

Target Platforms

Reference

Compressors Class

Compressors 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