title: Read exif metadata of images in Qt
body: <p>In my Qt app I want to read exif data of images. <code>QImage</code> or <code>QPixmap</code> don't seem to provide such hooks.</p>
  
  <p>Is there any API in Qt that allows reading exif without using external libraries like <code>libexif</code>?</p>
  
  <p>EDIT: This is a duplicate of <a href="https://stackoverflow.com/questions/4105534/what-exif-lib-can-i-use-from-a-qt-program-on-embedded-linux?rq=1">this</a></p>