title: Convert System.Windows.Media.Imaging.BitmapSource to System.Drawing.Image
body: <p>I'm tying together two libraries. One only gives output of type <code>System.Windows.Media.Imaging.BitmapSource</code>, the other only accepts input of type <code>System.Drawing.Image</code>.</p>
  
  <p>How can this conversion be performed?</p>