ImageEn, unit iemmf

TIEMediaFoundationSourceReader.GetNextSample

TIEMediaFoundationSourceReader.GetNextSample


Declaration

function GetNextSample(): TIEMFReceivedSample;


Description

Retrieve the next sample from the samples buffer.

Note: Applications should free the received sample.


Example

// Handler for TImageEnView.OnMediaFoundatioNotify 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;


See Also

Capturing
StartCapture
StopCapture