Decoding Barcode using Zxing library works on 1 tablet but does not work on another tablet

Question

I have written a windows store app in XAML & C# to read image from tablet's webcam and decode the barcode using Zxing's lbrary. The code is working fine on a given tablet having an i5 processor while it fails to run on an actual tablet with 2MP camera and "Intel Baytrail Quad-Core" processor.

Any ideas on why this could happen?

Please let me know if you need to see my code for this issue ad I will share.

I am wondering how can the same code work on 1 tablet while fail on another tablet.

Thanks in advance for any help provided.

EDIT

Code used to scan the barcode and read as below - The last if/else block is what I get to. No exception raised :(

string barcodeData = string.Empty;
            using (var imageStream = new InMemoryRandomAccessStream())
            {
                processingImage = true;
                var encodingProperties = new ImageEncodingProperties();
                encodingProperties.Subtype = "Jpeg";
                encodingProperties.Width = 400;
                encodingProperties.Height = 400;

                await captureMgr.CapturePhotoToStreamAsync(encodingProperties, imageStream);
                await imageStream.FlushAsync();
                imageStream.Seek(0);

                var bitmap = new WriteableBitmap(400, 400);
                bitmap.SetSource(imageStream);
                preview1.Source = bitmap; //preview1 is an Image control to display the captured image

                BitmapImage bitmapImage = new BitmapImage();
                bitmapImage.SetSource(imageStream);

                imageStream.Seek(0);

                var bitmapDecoder = await BitmapDecoder.CreateAsync(BitmapDecoder.JpegDecoderId, imageStream);

                var data = await bitmapDecoder.GetPixelDataAsync(
                    BitmapPixelFormat.Bgra8,
                    BitmapAlphaMode.Straight,
                    new BitmapTransform(),
                    ExifOrientationMode.IgnoreExifOrientation,
                    ColorManagementMode.DoNotColorManage
                    );
                if (data != null)
                {
                    BarcodeReader barcodeReader = new BarcodeReader();

                    var result = barcodeReader.Decode(
                        data.DetachPixelData(),
                        (int)bitmapDecoder.PixelWidth,
                        (int)bitmapDecoder.PixelHeight,
                        ZXing.RGBLuminanceSource.BitmapFormat.BGR32
                        );
                    if (result != null)
                    {
                        //Barcode found
                    }
                    else
                       //No data found.
                }
            }

Answer 1

I guess you are using ZXing.NET library. Have you ever considered moving to another barcode scanner library?

Accessing the "ISSUES" section in ZXing.NET Library, you can see that there's a lot of bugs still opened for Windows Phone (and should be Window Store also).

http://zxingnet.codeplex.com/workitem/list/basic

One of it called my attention. Check out this comment:

While the WP samples all target Silverlight, you must not forget that the new WP8.1 base is WinRT - so I suggest you use the WinRT sample as a base.

I tried to do the same, but truth to be told, ZXing lacks a lot ATM for WinRT Universal Apps - it's slow, unreliable, and barely ever recognizes a thing.

http://zxingnet.codeplex.com/workitem/13311

I don't know how reliable this is, but the last time the project was updated was on April 7th!!!!

You should really consider changing you library!