Returns the index of the first occurrence of a AudioFormat object whose name matches the given string.
public int IndexOf(
int SampleFrequency,
int BitsPerSample,
int Channels
)
Public Overloads Function IndexOf( _
ByVal SampleFrequency As Integer, _
ByVal BitsPerSample As Integer, _
ByVal Channels As Integer _
) As Integer
public:
int IndexOf(
int SampleFrequency,
int BitsPerSample,
int Channels
)
SampleFrequency
A value representing the sample frequency of the AudioFormat to find.
BitsPerSample
A value representing the bits per sample of the AudioFormat to find.
Channels
A value representing the number of channels of the AudioFormat to find.
The zero-based index position of the AudioFormat item found, or -1 if not found.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void IndexContainsExample()
{
// reference the capture control
CaptureCtrl capturectrl = _form.CaptureCtrl;
try
{
// set an audio device first, you should use your audio device name here
if (capturectrl.AudioDevices["USB"] == null)
throw new Exception("No USB audio device available");
capturectrl.AudioDevices["USB"].Selected = true;
// reference the audio formats object
AudioFormats audioformats = capturectrl.AudioCaptureFormats;
// check the index of 8hz, 16-bit, stereo
int i = audioformats.IndexOf(8000, 16, 2);
// access the format via the collection indexer
AudioFormat af = audioformats[i];
// check if the collection contains this format
// (it should we just got it with IndexOf above)
if (audioformats.Contains(af))
{
// set the result to what we expect
_result = true;
}
}
catch (Exception)
{
_result = false;
}
}
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures
Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub IndexContainsExample()
' reference the capture control
Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
Try
' set an audio device first, you should use your audio device name here
If capturectrl.AudioDevices("USB") Is Nothing Then
Throw New Exception("No USB audio device available")
End If
capturectrl.AudioDevices("USB").Selected = True
' reference the audio formats object
Dim audioformats As AudioFormats = capturectrl.AudioCaptureFormats
' check the index of 8hz, 16-bit, stereo
Dim i As Integer = audioformats.IndexOf(8000, 16, 2)
' access the format via the collection indexer
Dim af As AudioFormat = audioformats(i)
' check if the collection contains this format
' (it should we just got it with IndexOf above)
If audioformats.Contains(af) Then
' set the result to what we expect
_result = True
End If
Catch e1 As Exception
_result = False
End Try
End Sub
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