title: Flip Android front camera on preview for barcode scanning
body: <p>I have an application that scan barcode with the Android device cameras. I take the example program here: <a href="https://github.com/journeyapps/zxing-android-embedded" rel="nofollow">https://github.com/journeyapps/zxing-android-embedded</a></p>
  
  <p>Now, I want to scan a barcode with my device front camera.
  On that sample solution there's a button that allow you to take a barcode by front camera, but the problem is that the Preview image of camera is "flipped", like on a mirror, and so the application can't read the barcode.</p>
  
  <p>Is there a method to overcome this problem and to make sure that the recorded image is displayed correctly?</p>