title: What library should I use to get the data from a photo of a QR Code?
body: <blockquote>
    <p>Similar: <a href="https://stackoverflow.com/questions/304537/does-anyone-know-of-a-c-c-unix-qr-code-library">Does anyone know of a C/C++ Unix QR-Code library?</a></p>
  </blockquote>
  
  <p>I tried <a href="http://fukuchi.org/works/qrencode/index.en.html" rel="nofollow noreferrer">libqrencode</a> but apparently it's only able to generate a QR-Code. However, I need a library that reads the data from a photo of a printed QR-Code.</p>
  
  <p>It must be a C, C++ or Objective-C library and it has to compile on BSD systems. On my platform, Java and .NET are not available.</p>
  
  <p>What libraries can I use?</p>
  
  <p>Thanks.</p>