Vuforia + zxing parse QR code

Copy and use it directly.

using UnityEngine;using System.Collections;using System;using Vuforia;using System.Threading;using ZXing;using ZXing.QrCode;using ZXing.Common;using UnityEngine.SceneManagement;public class CameraImageAccess : MonoBehaviour{    private Image.PIXEL_FORMAT m_PixelFormat = Image.PIXEL_FORMAT.GRAYSCALE;    private bool m_RegisteredFormat = false;    public bool reading;    public string QRMessage;    public UnityEngine.UI.Text labelQrc;    Thread qrThread;    //bool isQuit;    private Color32[] c;    private int W, H;    Image QCARoutput;    bool updC;    bool gotResult = false;    void Start()    {    }    //void OnApplicationQuit()    //{           //}    void OnEnable()    {        VuforiaBehaviour vuforiaBehaviour = (VuforiaBehaviour)FindObjectOfType(typeof(VuforiaBehaviour));        if (vuforiaBehaviour)        {            vuforiaBehaviour.RegisterTrackablesUpdatedCallback(OnTrackablesUpdated);        }        var isAutoFocus = CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);        if (!isAutoFocus)        {            CameraDevice.Instance.SetFocusMode(CameraDevice.FocusMode.FOCUS_MODE_NORMAL);        }        //Debug.Log(String.Format("AutoFocus : {0}", isAutoFocus));        if (!m_RegisteredFormat)        {            Vuforia.CameraDevice.Instance.SetFrameFormat(m_PixelFormat, true);            m_RegisteredFormat = true;        }        qrThread = new Thread(DecodeQR);        qrThread.Start();    }    void OnDisable()    {        Debug.Log("OnDisable");        VuforiaBehaviour vuforiaBehaviour = (VuforiaBehaviour)FindObjectOfType(typeof(VuforiaBehaviour));        if (vuforiaBehaviour)        {            vuforiaBehaviour.UnregisterTrackablesUpdatedCallback(OnTrackablesUpdated);        }        qrThread.Abort();        qrThread = null;    }    public void OnTrackablesUpdated()    {           Vuforia.CameraDevice cam = Vuforia.CameraDevice.Instance;        QCARoutput = cam.GetCameraImage(m_PixelFormat);        if (QCARoutput != null)        {            reading = true;            updC = true;        }        else        {            reading = false;            Debug.Log(m_PixelFormat + " image is not available yet");        }    }    void Update()    {        if (reading)        {            if (QCARoutput != null)            {                if (updC)                {                    updC = false;                    Invoke("ForceUpdateC", 1f);//here we'll postpone next c update, this function literally just switches updC to true                    if (QCARoutput == null)                    {                        return;                    }                    c = null;                    c = ImageToColor32(QCARoutput);                    if (W == 0 | H == 0)                    {                        W = QCARoutput.BufferWidth;                        H = QCARoutput.BufferHeight;                    }                    QCARoutput = null;                }            }        }        //labelQrc.text = QRMessage;        //if (gotResult) SceneManager.LoadScene(0);    }    void DecodeQR()    {        // create a reader with a custom luminance source        var barcodeReader = new BarcodeReader { AutoRotate = false, TryHarder = false };        barcodeReader.ResultFound += OnResultF;        while (true)        {            //if (isQuit)//This one is used to be true in OnApplicationQuit() See ZXing's tutorial for more info            //    break;            if (reading && c != null)            {                try                {                    // decode the current frame                    ZXing.Result result = barcodeReader.Decode(c, W, H);                    c = null;                    if (result != null)                    {                        QRMessage = result.Text;                        //download = true;                        //reading = false;                        //Debug.Log(QRMessage);                                                 }                }                catch(Exception e)                {                    Debug.LogError(e.Message);                }            }            else {            }            Thread.Sleep(200);        }    }    void OnResultF(Result result)    {        Debug.Log(result.Text);        gotResult = true;        //SceneManager.LoadScene(0);    }    void ForceUpdateC()    { //To set it to update later        updC = true;    }    Color32[] ImageToColor32(Vuforia.Image a)    {        if (!a.IsValid()) return null;        Color32[] r = new Color32[a.BufferWidth * a.BufferHeight];        for (int i = 0; i < r.Length; i++)        {            r[i].r = r[i].g = r[i].b = a.Pixels[i];        }        return r;    }}

Vuforia + zxing parse QR code