Leadtools.Multimedia Namespace > CaptureCtrl Class : TimeLimit Property |
public virtual double TimeLimit {get; set;}
'Declaration Public Overridable Property TimeLimit As Double
'Usage Dim instance As CaptureCtrl Dim value As Double instance.TimeLimit = value value = instance.TimeLimit
public virtual double TimeLimit {get; set;}
get_TimeLimit();
set_TimeLimit(value);
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 175\Media"; End Class
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 whether we 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 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