TuningSpace Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public int TuningSpace {get; set;}

'Declaration
 
Public Property TuningSpace As Integer

'Usage
 
Dim instance As TVTuner
Dim value As Integer
 
instance.TuningSpace = value
 
value = instance.TuningSpace

public int TuningSpace {get; set;}

 get_TuningSpace();
 set_TuningSpace(value);

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

Property Value

A value representing the tuning space identifier.

Gets or sets the current tuning space. A tuning space is a set of information about the available channels and the channel to frequency mapping, which can identify a particular network provider or broadcast source. Multiple tuning spaces can be determined and stored for use in multiple areas. To get the most precise frequency for a particular channel, use the AutoTune method. Once the frequencies for all channels have been found by using the AutoTune method, this information can be stored by calling the StoreAutoTune method. For more detailed information, refer to the Microsoft documentation for IAMTuner.get_TuningSpace.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Public _result As Boolean = False
      Public _form As CaptureCtrlForm = New CaptureCtrlForm()
      Public Sub TuningSpaceExample()
         ' reference the forms capture control and tv tuner
         Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

         ' input and output files
         Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_Source.avi")
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "TVTuner_TuningSpaceExample.avi")

         Try
            ' select the first device with analog in it's name
            ' Replace "Analog" with your video capture device name
            If capturectrl.VideoDevices("Analog") Is Nothing Then
               Throw New Exception("No Analog video devices available!")
            End If

            capturectrl.VideoDevices("Analog").Selected = True

            ' get the TV Tuner device
            Dim tvtuner As TVTuner = capturectrl.TVTuner

            ' Check if TV tuner is valid
            If Not tvtuner Is Nothing Then
               tvtuner.Mode = TunerModeType.TV
               tvtuner.SetInputType(0, TunerInputType.Antenna)
               Dim tuningSpace As Integer = tvtuner.TuningSpace

               ' set the current tuning space to 9999 
               ' tuning spaces are user defined and allow you to override 
               ' channel and frequency mappings for the given input type (Cable or Antenna)
               tvtuner.TuningSpace = 9999
               tvtuner.CountryCode = 1

               Dim max As Integer = tvtuner.ChannelMax
               Dim min As Integer = tvtuner.ChannelMin

               ' loop through some channels and tune
               Dim i As Integer = min
               Do While i <= max
                  tvtuner.SetChannel(i, 0, 0)
                  tvtuner.AutoTune(i)
                  Dim signal As Boolean = (tvtuner.SignalPresent = TunerSignalStrength.SignalPresent)
                  i += 1
               Loop

               ' store the tuning frequencies in the tuning space registy
               tvtuner.StoreAutoTune()

               ' set the result
               _result = True
            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

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
End Class

public bool _result = false;
      public CaptureCtrlForm _form = new CaptureCtrlForm();
      public void TuningSpaceExample()
      {
         // reference the forms capture control and tv tuner
         CaptureCtrl capturectrl = _form.CaptureCtrl;

         // input and output files
         string inFile =Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_Source.avi");
         string outFile = Path.Combine(LEAD_VARS.MediaDir,"TVTuner_TuningSpaceExample.avi");

         try
         {
            // select the first device with analog in it's name
            // Replace "Analog" with your video capture device name
            if (capturectrl.VideoDevices["Analog"] == null)
               throw new Exception("No Analog video devices available!");

            capturectrl.VideoDevices["Analog"].Selected = true;

            // get the TV Tuner device
            TVTuner tvtuner = capturectrl.TVTuner;

            // check whether the TV tuner is valid
            if (tvtuner != null)
            {
               tvtuner.Mode = TunerModeType.TV;
               tvtuner.SetInputType(0, TunerInputType.Antenna);
               int tuningSpace = tvtuner.TuningSpace;

               // set the current tuning space to 9999 
               // tuning spaces are user defined and allow you to override 
               // channel and frequency mappings for the given input type (Cable or Antenna)
               tvtuner.TuningSpace = 9999;
               tvtuner.CountryCode = 1;

               int max = tvtuner.ChannelMax;
               int min = tvtuner.ChannelMin;

               // loop through some channels and tune
               for (int i = min; i <= max; i++)
               {
                  tvtuner.SetChannel(i, 0, 0);
                  tvtuner.AutoTune(i);
                  bool signal = (tvtuner.SignalPresent == TunerSignalStrength.SignalPresent);
               }

               // store the tuning frequencies in the tuning space registy
               tvtuner.StoreAutoTune();

               // set the result
               _result = true;
            }
         }
         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();
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

TVTuner Class
TVTuner Members