public RGBLuminanceSource(byte[] d, int W, int H, RGBLuminanceSource.BitmapFormat format)
: base(W, H)
{
__width = W;
__height = H;
int width = W;
int height = H;
// In order to measure pure decoding speed, we convert the entire image to a greyscale array
// up front, which is the same as the Y channel of the YUVLuminanceSource in the real app.
luminances = new byte[width * height];
for (int y = 0; y < height; y++)
{
int offset = y * width;
for (int x = 0; x < width; x++)
{
int b = d[offset * 4 + x * 4];
int g = d[offset * 4 + x * 4 + 1];
int r = d[offset * 4 + x * 4 + 2];
if (r == g && g == b)
{
// Image is already greyscale, so pick any channel.
luminances[offset + x] = (byte)r;
}
else
{
// Calculate luminance cheaply, favoring green.
luminances[offset + x] = (byte)((r + g + g + b) >> 2);
}
}
}
}
private static void imageWorker_DoWork(object sender, DoWorkEventArgs e)
{
// scanning for a barcode
var wbmp = (WriteableBitmap)e.Argument;
var luminiance = new RGBLuminanceSource(wbmp, wbmp.PixelWidth, wbmp.PixelHeight);
var binarizer = new HybridBinarizer(luminiance);
var binBitmap = new BinaryBitmap(binarizer);
var reader = new MultiFormatReader();
e.Result = reader.decode(binBitmap);
}
/// <summary>
/// برسی وجود کد QR در تصویر
/// </summary>
/// <param name="bitmapByteArray">تصویر مورد نظر در قالب آرایه ای از <c>byte</c></param>
/// <param name="width">عرض تصویر به پیکسل</param>
/// <param name="height">طور تصویر به پیکسل</param>
/// <returns>نتیجه برسی</returns>
public bool ContainsQRCode(byte[] bitmapByteArray, int width, int height)
{
///[Checking picture for QR Code]
ZXing.LuminanceSource source = new ZXing.RGBLuminanceSource(bitmapByteArray, width, height);
ZXing.Common.HybridBinarizer binarizer = new ZXing.Common.HybridBinarizer(source);
ZXing.BinaryBitmap binBitmap = new ZXing.BinaryBitmap(binarizer);
ZXing.Common.BitMatrix bitMatrix = binBitmap.BlackMatrix;
ZXing.Multi.QrCode.Internal.MultiDetector detector = new ZXing.Multi.QrCode.Internal.MultiDetector(bitMatrix);
return(detector.detect() != null);
///[Checking picture for QR Code]
}
// Source: http://www.codeproject.com/Questions/441372/zxing-QRCode-Encoding-and-Decoding-in-csharp
private String qrReader(Bitmap image)
{
byte[] byteImage = ImageToByte(image);
try
{
ZXing.LuminanceSource source = new ZXing.RGBLuminanceSource(byteImage, image.Width, image.Height);
var binarizer = new HybridBinarizer(source);
var binBitmap = new BinaryBitmap(binarizer);
return(reader.decode(binBitmap).Text);
}
catch
{
return(string.Empty);
}
}
public Dictionary <string, ResultPoint[]> findQrCodeText(Reader decoder, Bitmap bitmap)
{
var rgb = new ZXing.RGBLuminanceSource(GetRGBValues(bitmap), bitmap.Width, bitmap.Height);
var hybrid = new HybridBinarizer(rgb);
BinaryBitmap binBitmap = new BinaryBitmap(hybrid);
Dictionary <string, ResultPoint[]> decodedString = new Dictionary <string, ResultPoint[]>();
Result res = decoder.decode(binBitmap, null);
if (res != null)
{
decodedString.Add(res.Text, res.ResultPoints);
}
return(decodedString);
}
//Interesting method
//public static string decodeQRImage(string path)
//{
// Bitmap bMap = BitmapFactory.DecodeFile(path);
// string decoded = null;
// int[] intArray = new int[bMap.Width * bMap.Height];
// Java.IO.InputStream ist = getResources().openRawResource(R.drawable.balloons);
// byte[] data = new byte[ist.Available()];
// bMap.GetPixels(intArray, 0, bMap.Width, 0, 0, bMap.Width, bMap.Height);
// LuminanceSource source = new RGBLuminanceSource(data, bMap.Width, bMap.Height);
// BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
// Reader reader = new QRCodeReader();
// ZXing.Result result = reader.decode(bitmap);
// decoded = result.Text;
// return decoded;
//}
// Something I am trying to get image scanning
private void ReadBarcode()
{
try
{
var imageBytes = GetImage("file:///android_asset/QR_Code_Test.jpg");
var width = GetWidth("file:///android_asset/QR_Code_Test.jpg");
var height = GetHeight("file:///android_asset/QR_Code_Test.jpg");
LuminanceSource source = new ZXing.RGBLuminanceSource(imageBytes, (int)width, (int)height);
HybridBinarizer hb = new HybridBinarizer(source);
var a = hb.createBinarizer(source);
BinaryBitmap bBitmap = new BinaryBitmap(a);
BarcodeReader reader = new BarcodeReader();
reader.Options.TryHarder = true;
MultiFormatReader reader1 = new MultiFormatReader();
try
{
var r = reader1.decodeWithState(bBitmap);
var result = reader.Decode(source);
var result2 = reader.DecodeMultiple(source);
if (result != null)
{
return;
}
return;
}
catch (Java.Lang.Exception ex)
{
//HandleError("ReadBarcode Error: ", ex.Message);
}
}
catch (Java.Lang.Exception ex)
{
//HandleError("ReadBarcode Error: ", ex.Message);
}
}
private async Task<Result> DetectBarcodeAsync()
{
var width = (int)PreviewResolution.Width;
var height = (int)PreviewResolution.Height;
var rotation = PhotoCaptureDevice.SensorRotationInDegrees;
LuminanceSource luminanceSource = null;
PhotoCaptureDevice.GetPreviewBufferY(_previewBuffer);
luminanceSource = new RGBLuminanceSource(_previewBuffer, width, height, RGBLuminanceSource.BitmapFormat.Gray8);
var result = _barcodeReader.Decode(luminanceSource);
if (result == null)
{
// ok, one try with rotation by 90 degrees
if ((Orientation & PageOrientation.Portrait) == PageOrientation.Portrait)
{
// if we are in potrait orientation it's better to rotate clockwise
// to get it in the right direction
luminanceSource = new RGBLuminanceSource(RotateClockwise(_previewBuffer, width, height), height, width, RGBLuminanceSource.BitmapFormat.Gray8);
}
else
{
// in landscape we try counter clockwise until we know it better
luminanceSource = luminanceSource.rotateCounterClockwise();
}
result = _barcodeReader.Decode(luminanceSource);
}
return result;
}
public Result Decode(byte[] rawRGB, int width, int height, RGBLuminanceSource.BitmapFormat format)
{
throw new NotImplementedException();
}
private void Worker()
{
if(_multiFormatReader == null)
{
_multiFormatReader = this.Options.BuildMultiFormatReader();
//_multiFormatReader = new MultiFormatReader {
// Hints = new Hashtable {
// { DecodeHintType.POSSIBLE_FORMATS, new ArrayList {
// BarcodeFormat.UPC_A, BarcodeFormat.UPC_E , BarcodeFormat.CODE_128,
// BarcodeFormat.CODE_39, BarcodeFormat.EAN_13, BarcodeFormat.EAN_8
// } }
// }
// };
}
if (wasStopped)
return;
using (var ap = new NSAutoreleasePool())
{
try
{
// Capturing screen image
using (var screenImage = CGImage.ScreenImage.WithImageInRect(picFrame)) //.WithImageInRect(picFrame))
{
using (var _theScreenImage = UIImage.FromImage(screenImage))
using (var srcbitmap = new Bitmap(_theScreenImage))
{
LuminanceSource source = null;
BinaryBitmap bitmap = null;
try
{
//Console.WriteLine(screenImage.Width.ToString() + " x " + screenImage.Height.ToString());
//var cropY = (int)((screenImage.Height * 0.4) / 2);
source = new RGBLuminanceSource(srcbitmap, screenImage.Width, screenImage.Height); //.crop(0, cropY, 0, screenImage.Height - cropY - cropY);
//Console.WriteLine(source.Width + " x " + source.Height);
bitmap = new BinaryBitmap(new HybridBinarizer(source));
try
{
var result = _multiFormatReader.decodeWithState(bitmap); //
//var result = _multiFormatReader.decodeWithState (bitmap);
//srcbitmap.Dispose();
if(result != null && result.Text!=null)
{
//BeepOrVibrate();
_parentViewController.BarCodeScanned(result);
}
}
catch (ReaderException)
{
}
/*
com.google.zxing.common.BitArray row = new com.google.zxing.common.BitArray(screenImage.Width);
int middle = screenImage.Height >> 1;
int rowStep = System.Math.Max(1, screenImage.Height >> (4));
for (int x = 0; x < 9; x++)
{
// Scanning from the middle out. Determine which row we're looking at next:
int rowStepsAboveOrBelow = (x + 1) >> 1;
bool isAbove = (x & 0x01) == 0; // i.e. is x even?
int rowNumber = middle + rowStep * (isAbove?rowStepsAboveOrBelow:- rowStepsAboveOrBelow);
if (rowNumber < 0 || rowNumber >= screenImage.Height)
{
// Oops, if we run off the top or bottom, stop
break;
}
// Estimate black point for this row and load it:
try
{
row = bitmap.getBlackRow(rowNumber, row);
var resultb = _multiFormatReader.decodeRow(rowNumber, row, hints);
if(resultb.Text!=null)
{
Console.WriteLine("SCANNED");
BeepOrVibrate();
_parentViewController.BarCodeScanned(resultb);
break;
}
else {
continue;
}
}
catch (ReaderException re)
{
continue;
}
}
*/
// var result = _barcodeReader.decodeWithState(bitmap);
//
// if(result.Text!=null)
// {
// _multiFormatOneDReader = null;
// BeepOrVibrate();
// _parentViewController.BarCodeScanned(result);
// }
} catch (Exception ex) {
Console.WriteLine(ex.Message);
}
finally {
if(bitmap!=null)
bitmap = null;
if(source!=null)
source = null;
// if(srcbitmap!=null)
// srcbitmap = null;
//if (_theScreenImage != null)
// _theScreenImage = null;
}
}
}
}
catch
{
}
}
GC.Collect();
//Console.WriteLine("Done.");
}
public void CheckBarCode()
{
try {
using(var bbImage = new System.Drawing.Bitmap (codeImage)){
Reader barReader = new ZXing.QrCode.QRCodeReader();
//Reader barReader = new MultiFormatReader ();
LuminanceSource source = new RGBLuminanceSource (bbImage, (int)codeImage.Size.Width, (int)codeImage.Size.Height);
BinaryBitmap bb = new BinaryBitmap (new HybridBinarizer (source));
Result res = barReader.decode (bb);
InvokeOnMainThread (() => {
codeImage.Dispose();
if (res != null) {
//result has the string from the image
//AppDelegate.main.decryptVC.txtScanResult.Text = res.Text;
AppDelegate.main.decryptVC.ProcessScannedCode(res.Text);
} else {
//no valid code found;
}
numRuns++;
barChecking = false;
});
}
} catch (Exception e) {
barChecking = false;
Console.WriteLine (e);
}
}
public override void DidOutputSampleBuffer (AVCaptureOutput captureOutput, CMSampleBuffer sampleBuffer, AVCaptureConnection connection)
{
try {
if (!gotResult)
{
LuminanceSource luminance;
//connection.VideoOrientation = AVCaptureVideoOrientation.Portrait;
using (var pixelBuffer = sampleBuffer.GetImageBuffer () as CVPixelBuffer) {
if (bytes == null)
bytes = new byte [pixelBuffer.Height * pixelBuffer.BytesPerRow];
pixelBuffer.Lock (0);
Marshal.Copy (pixelBuffer.BaseAddress, bytes, 0, bytes.Length);
luminance = new RGBLuminanceSource (bytes, pixelBuffer.Width, pixelBuffer.Height);
pixelBuffer.Unlock (0);
}
var binarized = new BinaryBitmap (new HybridBinarizer (luminance));
var result = reader.decodeWithState (binarized);
//parent.session.StopRunning ();
gotResult = true;
if (parent.Scan != null)
parent.Scan (result);
}
} catch (ReaderException) {
// ignore this exception; it happens every time there is a failed scan
} catch (Exception e) {
// TODO: this one is unexpected.. log or otherwise handle it
throw;
} finally {
try {
// lamest thing, but seems that this throws :(
sampleBuffer.Dispose ();
} catch { }
}
}
/// <summary>
/// 读取二维码信息
/// </summary>
/// <param name="strBarcodeImgPath">二维码的存放路径</param>
/// <returns>二维码信息</returns>
public static string ReadBarcode(string strBarcodeImgPath)
{
var img = Image.FromFile(strBarcodeImgPath);
var bmap = new Bitmap(img);
var ms = new MemoryStream();
bmap.Save(ms, ImageFormat.Bmp);
var bytes = ms.GetBuffer();
LuminanceSource source = new RGBLuminanceSource(bytes, bmap.Width, bmap.Height);
var bitmap = new BinaryBitmap(new HybridBinarizer(source));
var result = new MultiFormatReader().decode(bitmap);
return result.Text;
}
/// <summary>
/// Scans the camera's preview buffer for a QR code.
/// </summary>
private void ScanPreviewBuffer()
{
int width = (int) _camera.PreviewResolution.Width;
int height = (int) _camera.PreviewResolution.Height;
byte[] pixelData = new byte[width * height];
_camera.GetPreviewBufferY( pixelData );
var luminance = new RGBLuminanceSource( pixelData, width, height, RGBLuminanceSource.BitmapFormat.Gray8 );
var binarizer = new HybridBinarizer( luminance );
var bitmap = new BinaryBitmap( binarizer );
var result = new QRCodeReader().decode( bitmap );
if ( result != null )
{
Dispatcher.BeginInvoke( () => ProcessResult( result ) );
}
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Somewhere in your app, call the initialization code:
MobileBarcodeScanner.Initialize(Application);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
//Create a new instance of our Scanner
scanner = new MobileBarcodeScanner();
// Get our button from the layout resource,
// and attach an event to it
Button button = FindViewById <Button>(Resource.Id.myButton);
button.Click += delegate
{
_imageView = FindViewById <ImageView>(Resource.Id.imageView1);
//BitmapFactory.Options options = new BitmapFactory.Options
//{
// InJustDecodeBounds = false
//};
//// The result will be null because InJustDecodeBounds == true.
//Bitmap bitmapToDisplay = await BitmapFactory.DecodeResourceAsync(Resources, Resource.Drawable.download1);
//_imageView.SetImageBitmap(bitmapToDisplay);
_imageView.SetImageBitmap(
decodeSampledBitmapFromResource(Resources, Resource.Drawable.qrcode, 375, 375));
};
Button buttonScan = FindViewById <Button>(Resource.Id.buttonScan);
//buttonScan.Click += async delegate {
//var scanner = new ZXing.Mobile.MobileBarcodeScanner();
//var result = await scanner.Scan();
//if (result != null)
// Console.WriteLine("Scanned Barcode: " + result.Text);
//};
buttonScan.Click += delegate
{
//var fullName = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Images", "download.png");
String path = System.Environment.CurrentDirectory;
BitmapFactory.Options options = new BitmapFactory.Options
{
InPreferredConfig = Bitmap.Config.Argb8888
};
//BitmapFactory.Options options = new BitmapFactory.Options
//{
// InJustDecodeBounds = true
//};
// The result will be null because InJustDecodeBounds == true.
//Bitmap bitmap = await BitmapFactory.DecodeResourceAsync(Resources, Resource.Drawable.download1, options);
Bitmap bitmap = decodeSampledBitmapFromResource(Resources, Resource.Drawable.qrcode, 375, 375);
// var imageHeight = options.OutHeight;
//var imageWidth = options.OutWidth;
var imageHeight = (int)bitmap.GetBitmapInfo().Height;
var imageWidth = (int)bitmap.GetBitmapInfo().Width;
//using (var stream = new MemoryStream())
//{
// bitmap.Compress(Bitmap.CompressFormat.Png, 0, stream);
// bitmapData = stream.ToArray();
//}
int size = (int)bitmap.RowBytes * (int)bitmap.GetBitmapInfo().Height;
Java.Nio.ByteBuffer byteBuffer = Java.Nio.ByteBuffer.Allocate(size);
bitmap.CopyPixelsToBuffer(byteBuffer);
byte[] byteArray = new byte[byteBuffer.Remaining()];
var imageBytes = byteBuffer.Get(byteArray);
LuminanceSource source = new ZXing.RGBLuminanceSource(byteArray, (int)imageWidth, (int)imageHeight);
var barcodeReader = new BarcodeReader();
barcodeReader.Options.TryHarder = true;
//barcodeReader.Options.ReturnCodabarStartEnd = true;
//barcodeReader.Options.PureBarcode = true;
//barcodeReader.Options.PossibleFormats = new List<BarcodeFormat>();
//barcodeReader.Options.PossibleFormats.Add(BarcodeFormat.QR_CODE);
ZXing.Result result = barcodeReader.Decode(source);
var result2 = barcodeReader.DecodeMultiple(source);
ZXing.Result result3 = barcodeReader.Decode(byteArray, (int)imageWidth, (int)imageHeight, RGBLuminanceSource.BitmapFormat.RGB24);
ZXing.Result result4 = barcodeReader.Decode(source);
HybridBinarizer hb = new HybridBinarizer(source);
var a = hb.createBinarizer(source);
BinaryBitmap bBitmap = new BinaryBitmap(a);
MultiFormatReader reader1 = new MultiFormatReader();
var r = reader1.decodeWithState(bBitmap);
int[] intarray = new int[((int)imageHeight * (int)imageWidth)];
bitmap.GetPixels(intarray, 0, (int)bitmap.GetBitmapInfo().Width, 0, 0, (int)imageWidth, (int)imageHeight);
LuminanceSource source5 = new RGBLuminanceSource(byteArray, (int)imageWidth, (int)imageHeight);
BinaryBitmap bitmap3 = new BinaryBitmap(new HybridBinarizer(source));
ZXing.Reader reader = new DataMatrixReader();
//....doing the actually reading
ZXing.Result result10 = reader.decode(bitmap3);
//InputStream is = this.Resources.OpenRawResource(Resource.Id.imageView1);
//Bitmap originalBitmap = BitmapFactory.decodeStream(is);
//UIImage
//var barcodeBitmap = (Bitmap)Bitmap.FromFile(@"C:\Users\jeremy\Desktop\qrimage.bmp");
};
Button buttonScan2 = FindViewById <Button>(Resource.Id.buttonScan2);
buttonScan2.Click += async delegate
{
//Tell our scanner to activiyt use the default overlay
scanner.UseCustomOverlay = false;
//We can customize the top and bottom text of the default overlay
scanner.TopText = "Hold the camera up to the barcode\nAbout 6 inches away";
scanner.BottomText = "Wait for the barcode to automatically scan!";
//Start scanning
var result = await scanner.Scan();
// Handler for the result returned by the scanner.
HandleScanResult(result);
};
}
public void Decode()
{
Bitmap bitmap = new Bitmap(@"text.png");
try
{
MemoryStream memoryStream = new MemoryStream();
bitmap.Save(memoryStream, ImageFormat.Bmp);
byte[] byteArray = memoryStream.GetBuffer();
ZXing.LuminanceSource source = new RGBLuminanceSource(byteArray, bitmap.Width, bitmap.Height);
var binarizer = new HybridBinarizer(source);
var binBitmap = new BinaryBitmap(binarizer);
QRCodeReader qrCodeReader = new QRCodeReader();
Result str = qrCodeReader.decode(binBitmap);
Assert.AreEqual(str, "Hello World!");
}
catch { }
}
