Gets the audio subchannel count for a multifunction tuner.
public int AudioSubChannelCount { get; }
Public ReadOnly Property AudioSubChannelCount As Integer
public:
property int AudioSubChannelCount {
int get();
}
A value representing the audio subchannel count.
Gets the audio subchannel count for a multifunction tuner. This property is valid only for ATSC digital TV broadcasts.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void AudioSubChannelCountExample()
{
// reference the forms capture control and tv tuner
CaptureCtrl 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["Digital"] == null)
throw new Exception("No Digital video devices available!");
capturectrl.VideoDevices["Digital"].Selected = true;
// get the TV Tuner device
TVTuner tvtuner = capturectrl.TVTuner;
// Check if TV tuner is valid
if (tvtuner != null)
{
// try to set the channel and check the subchannel countss
tvtuner.SetChannel(101, -1, -1);
int videoSubChannelCount = tvtuner.VideoSubChannelCount;
int audioSubChannelCount = tvtuner.AudioSubChannelCount;
// 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();
}
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures
Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub AudioSubChannelCountExample()
' reference the forms capture control and tv tuner
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("Digital") Is Nothing Then
Throw New Exception("No Digital video devices available!")
End If
capturectrl.VideoDevices("Digital").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
' try to set the channel and check the subchannel countss
tvtuner.SetChannel(101, -1, -1)
Dim videoSubChannelCount As Integer = tvtuner.VideoSubChannelCount
Dim audioSubChannelCount As Integer = tvtuner.AudioSubChannelCount
' 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
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