Read QR Code in Unity with ARKit and ZXing

I'm trying to read a QR code with the following libraries:

• ARKit
• ZXing

However it doesn't seem to go well. After several hours I still don't manage to read out a decent QR code. When debugging i apply the texture to see my result. It looks red because of the Texture Y but other than that it shows the QR code. Interpreting the texture doesn't return any data analysed by ZXing.

This is the following code i'm using for this:

Code (CSharp):

1. #if UNITY_IOS && !UNITY_EDITOR
2.    void Update()
3.    {
4.        if (!done) {
5.            ARTextureHandles handles = arSession.GetARVideoTextureHandles();
6.            //ARTextureHandles handles = UnityARSessionNativeInterface.GetARSessionNativeInterface().GetARVideoTextureHandles();
7.            if (handles.IsNull())
8.            {
9.                return;
10.            }
11.            if (handles.TextureY != System.IntPtr.Zero) {
12.                ReadQRCode (handles.TextureY);
13.            }
14.        }
15.  
16. }
17. #endif
18.  
19. private void ReadQRCode(System.IntPtr mtlTexPtr)
20. {
21.    Debug.Log("---------------");
22.    Debug.Log("Scanning...");
23.  
24.    Resolution currentResolution = Screen.currentResolution;
25.  
26.    tex = (UnityEngine.Texture2D)GameObject.Find("Camera").GetComponent<UnityARVideo>().m_ClearMaterial.GetTexture("_textureCbCr");
27.  
28.    tex.UpdateExternalTexture(mtlTexPtr);
29.  
30.    try
31.    {
32.        if(barCodeReader == null) {
33.            Debug.Log("Could not find barcorereader");
34.        }
35.        if(tex == null) {
36.            Debug.Log("Could not find texture");
37.        }
38.  
39.        var data = barCodeReader.Decode(tex.GetPixels32(), currentResolution.width, currentResolution.height);
40.        if (data != null)
41.        {
42.            Debug.Log("QR: " + data.Text);
43.        }
44.        else
45.        {
46.            Debug.Log("NO QR: " + "No QR code detected !");
47.        }
48.    }
49.    catch (Exception e)
50.    {
51.        Debug.LogError("Error reading QR");
52.        Debug.LogError(e.Message);
53.    }
54. }

 

Issue solved and handled here https://stackoverflow.com/questions/53431781/read-qr-code-in-unity-with-arkit-and-zxing