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WhiteBalance Property

Summary

Gets or sets the manual setting for the WhiteBalance property.

Syntax

C++

public int WhiteBalance { get; set; }

Public Property WhiteBalance As Integer

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

Property Value

A value representing the WhiteBalance setting.

Remarks

This value should be within the object's VideoProcAmpInfo.Min and VideoProcAmpInfo.Max property range values.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
public VideoProcAmp _videoprocamp; 
public string _outFile = Path.Combine(LEAD_VARS.MediaDir, "VideoProcAmp_SetAutoValueExample.avi"); 
 
// this example demonstrates how to set an auto value on the 
// video proc amp object. 
 
public void SetManualValueExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   try 
   { 
      // select the first device with Logitech in it's name 
      // Replace "Logitech" with your video capture device name 
      if (capturectrl.VideoDevices["Logitech"] == null) 
         throw new Exception("No Logitech video devices available!"); 
 
      capturectrl.VideoDevices["Logitech"].Selected = true; 
 
      // set a video compressor 
      capturectrl.VideoCompressors.Mpeg2.Selected = true; 
 
      // set the target file 
      capturectrl.TargetFile = _outFile; 
 
      // reference the video proc amp 
      _videoprocamp = capturectrl.VideoProcAmp; 
 
      // try to set the auto value 
      if (_videoprocamp != null) 
      { 
         // set the saturation to the maximum supported value 
         _videoprocamp.Saturation = _videoprocamp.SaturationInfo.Max; 
 
         // set the sharpness to the minimum value 
         _videoprocamp.Sharpness = _videoprocamp.SharpnessInfo.Min; 
 
         // set the white balace to the maximum value 
         _videoprocamp.WhiteBalance = _videoprocamp.WhiteBalanceInfo.Max; 
 
         // set the hue to the minimum value 
         // later in the timer we will bump this value using the stepDelta 
         _videoprocamp.Hue = _videoprocamp.HueInfo.Min; 
 
         // subscribe to the capture progress event  
         // so we can play with the hue setting above 
         capturectrl.Progress += new ProgressEventHandler(CaptureCtrl_Progress); 
      } 
 
      // check for video capture available 
      if (capturectrl.IsModeAvailable(CaptureMode.Video)) 
      { 
         // capture 15 seconds of video 
         capturectrl.UseTimeLimit = true; 
         capturectrl.TimeLimit = 15; 
 
         // subscribe to the compete event 
         capturectrl.Complete += new EventHandler(CaptureCtrl_Complete); 
         // start the capture 
         capturectrl.StartCapture(CaptureMode.Video); 
      } 
   } 
   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 (capturectrl.State == CaptureState.Running) 
      Application.DoEvents(); 
} 
 
void CaptureCtrl_Progress(object sender, ProgressEventArgs e) 
{ 
   if (_videoprocamp != null) 
   { 
      // roll the hue value around while capturing 
      _videoprocamp.Hue += _videoprocamp.HueInfo.StepDelta; 
 
      // reset it to the minimum if we reach the max 
      if (_videoprocamp.Hue >= _videoprocamp.HueInfo.Max) 
         _videoprocamp.Hue = _videoprocamp.HueInfo.Min; 
   } 
} 
 
void CaptureCtrl_Complete(object sender, EventArgs e) 
{ 
   // set the result to what we expect 
   _result = File.Exists(_outFile); 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"; 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
Public _videoprocamp As VideoProcAmp 
Public _outFile As String = Path.Combine(LEAD_VARS.MediaDir, "VideoProcAmp_SetAutoValueExample.avi") 
 
' this example demonstrates how to set an auto value on the 
' video proc amp object. 
 
Public Sub SetManualValueExample() 
   ' reference the capture control 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
   Try 
      ' select the first device with analog in it's name 
      ' Replace "Analog" with your video capture device name 
      If capturectrl.VideoDevices("Logitech") Is Nothing Then 
         Throw New Exception("No Logitech video devices available!") 
      End If 
 
      capturectrl.VideoDevices("Logitech").Selected = True 
 
      ' set a video compressor 
      capturectrl.VideoCompressors.Mpeg2.Selected = True 
 
      ' set the target file 
      capturectrl.TargetFile = _outFile 
 
      ' reference the video proc amp 
      _videoprocamp = capturectrl.VideoProcAmp 
 
      ' try to set the auto value 
      If Not _videoprocamp Is Nothing Then 
         ' set the saturation to the maximum supported value 
         _videoprocamp.Saturation = _videoprocamp.SaturationInfo.Max 
 
         ' set the sharpness to the minimum value 
         _videoprocamp.Sharpness = _videoprocamp.SharpnessInfo.Min 
 
         ' set the white balace to the maximum value 
         _videoprocamp.WhiteBalance = _videoprocamp.WhiteBalanceInfo.Max 
 
         ' set the hue to the minimum value 
         ' later in the timer we will bump this value using the stepDelta 
         _videoprocamp.Hue = _videoprocamp.HueInfo.Min 
 
         ' subscribe to the capture progress event  
         ' so we can play with the hue setting above 
         AddHandler capturectrl.Progress, AddressOf CaptureCtrl_Progress 
      End If 
 
      ' check for video capture available 
      If capturectrl.IsModeAvailable(CaptureMode.Video) Then 
         ' capture 15 seconds of video 
         capturectrl.UseTimeLimit = True 
         capturectrl.TimeLimit = 15 
 
         ' subscribe to the compete event 
         AddHandler capturectrl.Complete, AddressOf CaptureCtrl_Complete 
         ' start the capture 
         capturectrl.StartCapture(CaptureMode.Video) 
      End If 
   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 capturectrl.State = CaptureState.Running 
      Application.DoEvents() 
   Loop 
End Sub 
 
Private Sub CaptureCtrl_Progress(ByVal sender As Object, ByVal e As ProgressEventArgs) 
   If Not _videoprocamp Is Nothing Then 
      ' roll the hue value around while capturing 
      _videoprocamp.Hue += _videoprocamp.HueInfo.StepDelta 
 
      ' reset it to the minimum if we reach the max 
      If _videoprocamp.Hue >= _videoprocamp.HueInfo.Max Then 
         _videoprocamp.Hue = _videoprocamp.HueInfo.Min 
      End If 
   End If 
End Sub 
 
Private Sub CaptureCtrl_Complete(ByVal sender As Object, ByVal e As EventArgs) 
   ' set the result to what we expect 
   _result = File.Exists(_outFile) 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media" 
End Class

Requirements

Target Platforms

Reference

VideoProcAmp Class

VideoProcAmp Members

VideoProcAmpInfo Class

Help Version 19.0.2017.10.27

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies