private void UnregisterExtraPreviewCallback()
{
Native.UnsetExtraPreviewCallback(_handle).
ThrowIfFailed("Failed to unset extra preview callback.");
_extraPreviewCallback = null;
}
private void RegisterExtraPreviewCallback()
{
_extraPreviewCallback = (frame, streamId, _) =>
{
_extraPreview?.Invoke(this, new ExtraPreviewEventArgs(new PreviewFrame(frame), streamId));
};
Native.SetExtraPreviewCallback(_handle, _extraPreviewCallback).
ThrowIfFailed("Failed to set extra preview callback.");
}
