TImageEnView.OnMediaFoundationNotify

Declaration

property OnMediaFoundationNotify: TIEMediaFoundationNotifyEvent;

Description

Occurs whenever Media Foundation sends a new frame or a notification to TImageEnView.
NotifyType is one of: iemfnFrame (a new sample is available), iemfnStartingCapture, iemfnEndOfStream or iemfnError (capture stopped due to an error, see LastError).

Example

// handler for TImageEnView.OnMediaFoundationNotify event
procedure TForm1.ImageEnView1MediaFoundationNotify(Sender, MediaFoundationObject: TObject; NotifyType: TIEMediaFountationNotifyType);
var
  sample: TIEMFReceivedSample;
begin
  if NotifyType = iemfnFrame then // is this a frame?
  begin
    sample := ImageEnView1.IO.MediaFoundationSourceReader.GetNextSample();  // retrieve frame sample
    try
      sample.DecodeSample(ImageEnView1.IEBitmap); // convert frame sample to bitmap
      ImageEnView1.Update();                      // update TImageEnView to show the new bitmap
    finally
      sample.Free();                              // free the sample
    end;
  end;
end;

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