Gets or sets the option to use the frame rate specified in the
FrameRate property.
Syntax
Visual Basic (Declaration) | |
---|
Public Overridable Property UseFrameRate As Boolean |
Visual Basic (Usage) | Copy Code |
---|
Dim instance As CaptureCtrl
Dim value As Boolean
instance.UseFrameRate = value
value = instance.UseFrameRate |
C# | |
---|
public virtual bool UseFrameRate {get; set;} |
C++/CLI | |
---|
public:
virtual property bool UseFrameRate {
bool get();
void set ( bool value);
} |
Property Value
true if the
FrameRate property is enabled; false, otherwise.
Example
Visual Basic | Copy Code |
---|
Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub GetSubObjectExample()
' reference the capture control
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, "CaptureCtrl_GetSubObjectExample.avi")
Try
' set the source video device
If capturectrl.VideoDevices("USB") Is Nothing Then
Throw New Exception("No USB video device available")
End If
capturectrl.VideoDevices("USB").Selected = True
' set the source audio device
If capturectrl.AudioDevices("USB") Is Nothing Then
Throw New Exception("No USB audio device available")
End If
capturectrl.AudioDevices("USB").Selected = True
' set the output files
capturectrl.TargetFile = outFile
' set the audio and video compression
capturectrl.VideoCompressors.Mpeg2.Selected = True
capturectrl.AudioCompressors.AC3.Selected = True
' add the color adjustment processor
capturectrl.SelectedVideoProcessors.Add(capturectrl.VideoProcessors.Color)
' access the Color filter directly via the GetSubObject method
Dim lmvc As LMVColor = TryCast(capturectrl.GetSubObject(CaptureObject.SelVideoProcessor), LMVColor)
If Not lmvc Is Nothing Then
' change some settings
lmvc.Brightness = 85
lmvc.Contrast = 85
lmvc.Enabled = True
lmvc.EffectAreaEnabled = False
Marshal.ReleaseComObject(lmvc)
End If
' check if we have can capture video
If capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio) Then
capturectrl.FrameRate = 5 ' 5 frames per second
capturectrl.UseFrameRate = True
capturectrl.TimeLimit = 10 ' just 10 seconds of capture time
capturectrl.UseTimeLimit = True
' start the capture process
capturectrl.StartCapture(CaptureMode.VideoAndAudio)
' 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 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 17\Media"
End Class |
C# | Copy Code |
---|
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void GetSubObjectExample()
{
// reference the capture control
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,"CaptureCtrl_GetSubObjectExample.avi");
try
{
// set the source video device
if (capturectrl.VideoDevices["USB"] == null)
throw new Exception("No USB video device available");
capturectrl.VideoDevices["USB"].Selected = true;
// set the source audio device
if (capturectrl.AudioDevices["USB"] == null)
throw new Exception("No USB audio device available");
capturectrl.AudioDevices["USB"].Selected = true;
// set the output files
capturectrl.TargetFile = outFile;
// set the audio and video compression
capturectrl.VideoCompressors.Mpeg2.Selected = true;
capturectrl.AudioCompressors.AC3.Selected = true;
// add the color adjustment processor
capturectrl.SelectedVideoProcessors.Add(capturectrl.VideoProcessors.Color);
// access the Color filter directly via the GetSubObject method
LMVColor lmvc = capturectrl.GetSubObject(CaptureObject.SelVideoProcessor) as LMVColor;
if (lmvc != null)
{
// change some settings
lmvc.Brightness = 85;
lmvc.Contrast = 85;
lmvc.Enabled = true;
lmvc.EffectAreaEnabled = false;
Marshal.ReleaseComObject(lmvc);
}
// check if we have can capture video
if (capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio))
{
capturectrl.FrameRate = 5; // 5 frames per second
capturectrl.UseFrameRate = true;
capturectrl.TimeLimit = 10; // just 10 seconds of capture time
capturectrl.UseTimeLimit = true;
// start the capture process
capturectrl.StartCapture(CaptureMode.VideoAndAudio);
// 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();
}
}
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 17\Media";
} |
Remarks
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7
See Also