Zebra Crossing Unity3D WebCam QR Decoder

ZXingScanner.cs

using ZXing;
using ZXing.Common;

using UnityEngine;
using System.Collections.Generic;

/// <summary>
/// Extremely basic usage of BarcodeDecoder in ZXing
/// library to actively decode QR codes from WebCam.
/// You may download ZXing C# binaries from:
/// http://zxingnet.codeplex.com/
/// This is tested with Unity3D 5.3.5f1
/// 
/// A Multi threaded version of this class is available at:
/// https://gist.github.com/sepehr-laal/0b636942406a385097cbd5bcd1130b52
/// 
/// Attach this script to an object in your scene and
/// hit play. If you hold a QR code in front of your
/// WebCam, its decoded string appears in "decodedResult"
/// </summary>
public class ZXingScanner : MonoBehaviour
{
    public string decodedResult;
    WebCamTexture webCamTexture;
    BarcodeReader barcodeReader;

    void Start()
    {
        var formats = new List<BarcodeFormat>();
        formats.Add(BarcodeFormat.QR_CODE);

        barcodeReader = new BarcodeReader
        {
            AutoRotate = false,
            Options = new DecodingOptions
            {
                PossibleFormats = formats,
                TryHarder = true,
            }
        };

        webCamTexture = new WebCamTexture();
        webCamTexture.Play();
    }

    void Update()
    {
        if (webCamTexture != null && webCamTexture.isPlaying)
            DecodeQR();
    }

    void DecodeQR()
    {
        if (webCamTexture == null)
            return;

        Result result = barcodeReader.Decode(
            webCamTexture.GetPixels32(),
            webCamTexture.width,
            webCamTexture.height);

        if (result != null)
            decodedResult = result.Text;
    }

    void OnDestroy()
    {
        if (webCamTexture != null)
            webCamTexture.Stop();
    }
}