public virtual void CaptureFrame()
public:
virtual void CaptureFrame();
If the method fails, an error will be raised. For more information, refer to the Error Codes.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm(false);
public void CaptureFrameExample()
{
// reference the capture control
CaptureCtrl capturectrl = _form.CaptureCtrl;
// output file
string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_CaptureFrameExample.bmp");
try
{
// set the video capture device, use your capture device name here
if (capturectrl.VideoDevices["USB"] == null)
throw new Exception("No USB video device available");
capturectrl.VideoDevices["USB"].Selected = true;
capturectrl.TargetFormat = TargetFormatType.MP4;
// prepare the manual frames capture
capturectrl.ReadyCapture(CaptureMode.ManualFrames);
// do something before the capture starts
if (capturectrl.IsModeAvailable(CaptureMode.ManualFrames))
{
}
// set the capture mode to manual frames
capturectrl.StartCapture(CaptureMode.ManualFrames);
// capture a frame
capturectrl.CaptureFrame();
// stop the capture
capturectrl.StopCapture();
// check for the capture file and set the result
if (File.Exists(outFile))
{
Image test = Bitmap.FromFile(outFile);
_result = true;
}
}
catch (COMException)
{
_result = false;
}
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();
}
private PixelFormat FormatFromBitCount(int bitCount)
{
switch (bitCount)
{
case 8:
return PixelFormat.Format8bppIndexed;
case 16:
return PixelFormat.Format16bppRgb555;
case 32:
return PixelFormat.Format32bppRgb;
case 48:
return PixelFormat.Format48bppRgb;
case 24:
return PixelFormat.Format24bppRgb;
}
throw new Exception("Unrecognized bit count");
}
private int GetBitmapSize(Bitmap bmp, int bitCount)
{
int pixelSize = (int)Math.Log((double)bitCount);
return (bmp.Width * pixelSize + pixelSize & ~3) * bmp.Height;
}
private int GetBitmapScanRowSize(int bmpSize, int stride, int width)
{
return bmpSize / (stride / width);
}
public void CaptureFrame_Helper(object sender, EventArgs e)
{
// set result
_result = true;
}
static class LEAD_VARS
{
public const string MediaDir = @"C:\LEADTOOLS23\Media";
}
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