//takes the video input and creates a bitmap of the image
BinaryBitmap GetBitmapFromVideo(PhotoCamera cam)
{
BinaryBitmap binaryBitmap = null;
try
{
// Update buffer size
var pixelWidth = (int)_cam.PreviewResolution.Width;
var pixelHeight = (int)_cam.PreviewResolution.Height;
if (_buffer == null || _buffer.Length != (pixelWidth * pixelHeight))
{
_buffer = new byte[pixelWidth * pixelHeight];
}
_cam.GetPreviewBufferY(_buffer);
var luminance = new RGBLuminanceSource(_buffer, pixelWidth, pixelHeight, true);
var binarizer = new com.google.zxing.common.HybridBinarizer(luminance);
binaryBitmap = new BinaryBitmap(binarizer);
}
catch
{
}
return binaryBitmap;
}
public static String Decode(Image Image)
{
try
{
var hints = new Hashtable();
hints.Add(DecodeHintType.TRY_HARDER, true);
ArrayList fmts = new ArrayList();
fmts.Add(BarcodeFormat.QR_CODE);
hints.Add(DecodeHintType.POSSIBLE_FORMATS, fmts);
var Bitmap = new Bitmap(Image);
LuminanceSource source = new RGBLuminanceSource(Bitmap, Bitmap.Width, Bitmap.Height);
var bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
Reader reader = new MultiFormatReader();
Result result = reader.decode(bitmap, hints);
String DecodedString = result.Text;
Console.WriteLine(DecodedString);
return DecodedString;
}
catch (ReaderException ex)
{
return "";
}
catch (InvalidOperationException ex)
{
return "";
}
}
private static bool decode(FileInfo file)
{
Bitmap image ;
try {
image = new Bitmap(file.FullName) ;
} catch { return false ; }
// Rectangle crop = new Rectangle(image.Width/2,0,image.Width/2, image.Height) ;
// Bitmap focusOn = image.Clone(crop, PixelFormat.DontCare) ;
// RGBLuminanceSource j = new RGBLuminanceSource(focusOn, focusOn.Width, focusOn.Height) ;
RGBLuminanceSource j = new RGBLuminanceSource(image, image.Width, image.Height) ;
Binarizer[] binarizer = {new HybridBinarizer(j), new GlobalHistogramBinarizer(j)} ;
Reader[] reader = {new QRCodeReader(), new ByQuadrantReader(new QRCodeReader())} ;
Result qrc = null ;
Hashtable hints = new Hashtable() ;
hints[DecodeHintType.TRY_HARDER] = true ;
hints[DecodeHintType.POSSIBLE_FORMATS] = BarcodeFormat.QR_CODE ;
foreach (Binarizer b in binarizer) {
BinaryBitmap bitmap = new BinaryBitmap(b) ;
foreach (Reader r in reader) {
try {
qrc = r.decode(bitmap, hints) ;
} catch {}
if (qrc != null) break ;
}
if (qrc != null) break ;
}
return ((qrc != null) ? ifDecoded(file, qrc) : ifNotDecoded(file)) ;
}
private void btn_File_Click(object sender, System.EventArgs e)
{
string sRes="";
OpenFileDialog ofn=new OpenFileDialog();
if(ofn.ShowDialog()==DialogResult.OK){
try {
Reader barcodeReader=
new com.google.zxing.MultiFormatReader();
System.Drawing.Bitmap srcbitmap =
new System.Drawing.Bitmap(ofn.FileName.ToString()); // Make a copy of the image in the Bitmap variable
//make a grey bitmap of it
bmp_util util=new bmp_util();
srcbitmap = util.ConvertToGrayscale(srcbitmap);
RGBLuminanceSource source =
new RGBLuminanceSource(srcbitmap, srcbitmap.Width, srcbitmap.Height);
com.google.zxing.BinaryBitmap bitmap=
new com.google.zxing.BinaryBitmap(new HybridBinarizer(source));
com.google.zxing.Result result = barcodeReader.decode(bitmap);
System.Console.WriteLine(result.Text);
sRes=result.Text;
}
catch (com.google.zxing.ReaderException zex) {
sRes=zex.Message;
System.Console.WriteLine(zex.Message);
}
catch (Exception ex) {
sRes=ex.Message;
System.Console.WriteLine(ex.Message);
}
tb.Text=sRes;
}
}
private bool TryToRecognize(WriteableBitmap wb, Reader reader, Dictionary<object, object> zxhints, out string output)
{
bool res = false;
output = null;
try
{
var luminiance = new RGBLuminanceSource(wb, wb.PixelWidth, wb.PixelHeight);
var binarizer = new com.google.zxing.common.HybridBinarizer(luminiance);
var binBitmap = new com.google.zxing.BinaryBitmap(binarizer);
// recognize
var results = reader.decode(binBitmap, zxhints); // exception will be thrown if reader cannot decode image.
output = results.Text;
res = true;
}
catch {}
return res;
}
public string ReadBarcode(Bitmap BarcodeImage)
{
RGBLuminanceSource BarcodeSource = new RGBLuminanceSource(BarcodeImage, BarcodeImage.Width, BarcodeImage.Height);
BinaryBitmap BarcodeImageBin = new BinaryBitmap(new GlobalHistogramBinarizer(BarcodeSource));
MultiFormatReader BarcodeReader = new MultiFormatReader();
try
{
Result BarcodeDecodeResult;
BarcodeDecodeResult = BarcodeReader.decode(BarcodeImageBin);
if (BarcodeDecodeResult.Text != null)
return BarcodeDecodeResult.Text;
else
return "NoBarcode";
}
catch (Exception e)
{
return "Fail";
}
}
private void BarCodeDetectTimer_Tick(object sender, EventArgs e)
{
try
{
Bitmap img = (Bitmap)pictureBox1.Image;
Reader reader = new MultiFormatReader();
RGBLuminanceSource source1 = new RGBLuminanceSource(img, img.Width, img.Height);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source1));
Result result = reader.decode(bitmap);
textBox1.Text = result.Text;
dekodirano = textBox1.Text;
BarCodeDetectTimer.Stop();
}
catch (Exception)
{
statusStrip1.Text = "Greska pri dekodiranju";
}
}
private void button1_Click(object sender, EventArgs e)
{
if (this.openFileDialog1.ShowDialog() != DialogResult.OK)
{
return;
}
Image img = Image.FromFile(this.openFileDialog1.FileName);
Bitmap bmap;
try
{
bmap = new Bitmap(img);
}
catch (System.IO.IOException ioe)
{
MessageBox.Show(ioe.ToString());
return;
}
if (bmap == null)
{
MessageBox.Show("Could not decode image");
return;
}
LuminanceSource source = new RGBLuminanceSource(bmap, bmap.Width, bmap.Height);
com.google.zxing.BinaryBitmap bitmap = new com.google.zxing.BinaryBitmap(new COMMON.HybridBinarizer(source));
Result result;
try
{
result = new MultiFormatReader().decode(bitmap);
}
catch(ReaderException re)
{
MessageBox.Show(re.ToString());
return;
}
MessageBox.Show(result.Text);
}
public String decode(Bitmap bitmap)
{
if (bitmap == null)
{
return null;
}
LuminanceSource source = new RGBLuminanceSource(bitmap, bitmap.Width, bitmap.Height);
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
try
{
Result result = this.reader.decode(binaryBitmap);
if (result != null)
{
String[] resultToken = result.Text.Split(';');
double lat = Convert.ToDouble(resultToken[0]);
double lng = Convert.ToDouble(resultToken[1]);
double distance = Convert.ToDouble(resultToken[2]);
GPoint pointA = new GPoint(Convert.ToInt32(result.ResultPoints[1].X), Convert.ToInt32(result.ResultPoints[1].Y));
GPoint pointB = new GPoint(Convert.ToInt32(result.ResultPoints[2].X), Convert.ToInt32(result.ResultPoints[2].Y));
MapOverlayForm.Instance.SetMapScale(pointA, pointB, distance);
MapOverlayForm.Instance.RotationAngle = Convert.ToSingle(this.computeRotation(result.ResultPoints));
MapOverlayForm.Instance.MoveMapToLocalPosition(this.computeCenter(result.ResultPoints), new GMap.NET.PointLatLng(lat, lng));
}
return result.Text;
}
catch (ReaderException)
{
return null;
}
}
public String getQRCodeData(Bitmap bitmap)
{
LuminanceSource source = new RGBLuminanceSource(bitmap, bitmap.Width, bitmap.Height);
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
return this.reader.decode(binaryBitmap).Text;
}
private void PumpYFrames()
{
byte[] array = new byte[307200];
bool flag = false;
while (this._pumpYFrames)
{
BarcodeScanner._pauseFramesEvent.WaitOne();
if (this._isScanning)
{
try
{
this._cam.GetPreviewBufferY(array);
flag = true;
}
catch
{
flag = false;
}
if (flag)
{
DateTime now = DateTime.Now;
RGBLuminanceSource rGBLuminanceSource = new RGBLuminanceSource(array, 640, 480, false);
if (this._scanType == CodeType.OneDCodes || this._scanType == CodeType.UPC || this._scanType == CodeType.ITF || this._scanType == CodeType.EAN || this._scanType == CodeType.Code128 || this._scanType == CodeType.Code39)
{
rGBLuminanceSource.rotateCounterClockwise();
}
HybridBinarizer binarizer = new HybridBinarizer(rGBLuminanceSource);
BinaryBitmap image = new BinaryBitmap(binarizer);
Reader reader = this.GetReader(this._scanType);
try
{
Result results = reader.decode(image, this._hintDictionary);
TimeSpan timeSpent = DateTime.Now.Subtract(now);
Deployment.Current.Dispatcher.BeginInvoke(delegate
{
this.ProcessScan(results, timeSpent, this.ScanType);
if (this.StopOnSuccess)
{
this.IsScanning = false;
}
}
);
BarcodeScanner._pauseFramesEvent.Set();
}
catch
{
BarcodeScanner._pauseFramesEvent.Set();
}
}
}
}
}
private void Worker()
{
//iphone 4 : 960 x 640
//iphone 3 : 320 x 480
if(DeviceHardware.Version == DeviceHardware.HardwareVersion.iPhone4)
{
picFrame = new RectangleF(0, 146*2, 320*2, 157*2);
}
if(hints==null)
{
var list = new ArrayList();
list.Add(com.google.zxing.BarcodeFormat.EAN_8);
list.Add(com.google.zxing.BarcodeFormat.EAN_13);
hints = new Hashtable();
hints.Add(com.google.zxing.DecodeHintType.POSSIBLE_FORMATS, list);
hints.Add(com.google.zxing.DecodeHintType.NEED_RESULT_POINT_CALLBACK, new ResultCallBack(this));
}
if(_multiFormatOneDReader == null)
{
_multiFormatOneDReader = new com.google.zxing.oned.MultiFormatOneDReader(hints);
}
// Capturing screen image
using (var screenImage = CGImage.ScreenImage.WithImageInRect(picFrame))
{
_theScreenImage = UIImage.FromImage(screenImage);
Bitmap srcbitmap = new System.Drawing.Bitmap(_theScreenImage);
LuminanceSource source = null;
BinaryBitmap bitmap = null;
try {
source = new RGBLuminanceSource(srcbitmap, screenImage.Width, screenImage.Height);
bitmap = new BinaryBitmap(new HybridBinarizer(source));
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 = _multiFormatOneDReader.decodeRow(rowNumber, row, hints);
if(resultb.Text!=null)
{
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;
}
}
}
/// <summary>
/// This code should be run on a background thread to prevent UI lockup issues.
/// For information about background threads see http://msdn.microsoft.com/en-us/library/ff967560(VS.92).aspx#BKMK_Background
/// </summary>
private static void ProcessImage()
{
LastCaptureResults.State = CaptureState.Processing;
try
{
bool bIsReady = LastCaptureResults.isReadyForProcessing.WaitOne(3000);
if (!bIsReady)
{
LastCaptureResults.State = CaptureState.UnknownError;
LastCaptureResults.ErrorMessage = "Error: Timeout waiting for images to be processed. Please try again or send issue report using app bar.";
return;
}
StartProgress();
if (LastCaptureResults.BarcodeImage != null)
{
var wb = LastCaptureResults.VGABarcodeImage;
//Code from: btnReadTag_Click in "SLZXingQRSample\SLZXingQRSample\SLZXingSample\MainPage.xaml.vb"
var qrRead = GetReader(); // new com.google.zxing.qrcode.QRCodeReader();
var luminiance = new RGBLuminanceSource(wb, wb.PixelWidth, wb.PixelHeight);
var binarizer = new com.google.zxing.common.HybridBinarizer(luminiance);
var binBitmap = new com.google.zxing.BinaryBitmap(binarizer);
var results = qrRead.decode(binBitmap, zxingHints); //NOTE: will throw exception if cannot decode image.
LastCaptureResults.BarcodeText = results.Text;
LastCaptureResults.State = CaptureState.Success;
LastCaptureResults.ProcessValue();
}
else
{
LastCaptureResults.State = CaptureState.UnknownError;
LastCaptureResults.ErrorMessage = "Cannot process image: invalid or null BitmapImage.";
}
}
catch (Exception ex)
{
LastCaptureResults.ExceptionThrown = ex;
if (ex is com.google.zxing.ReaderException)
{
LastCaptureResults.ErrorMessage = "Error: Cannot decode barcode image. Please make sure scan mode is correct and try again.";
LastCaptureResults.State = CaptureState.ScanFailed;
}
else
{
Debug.WriteLine("Error: " + ex.ToString());
LastCaptureResults.ErrorMessage = String.Format("Barcode Library Processing Error: {0}\r\n{1}", ex.GetType(), ex.Message);
LastCaptureResults.State = CaptureState.UnknownError;
}
}
finally
{
ExecuteCallback();
}
}
private static bool decode(FileInfo file)
{
Bitmap original;
try {
original = new Bitmap(file.FullName);
} catch { return false; }
// Extract 2 *vertical* strips - one from the left-edge and another from the
// right edge of the scan. If the page has multiple questions, then it would have
// multiple QR codes. All of these would - if the strips are wide enough - be
// in one of the two strips
Bitmap[] strips = new Bitmap[2];
strips[0] = (Bitmap)ScanImg.Crop(original, 10, 0, 35, 95); // left strip
strips[1] = (Bitmap)ScanImg.Crop(original, 70, 0, 95, 95); // right strip
Result qrc = null;
bool[] orientation = {false, true};
bool wasRotated = false;
foreach (Bitmap img in strips) {
foreach (bool rotate in orientation) {
if (rotate)
img.RotateFlip(RotateFlipType.Rotate180FlipNone);
RGBLuminanceSource j = new RGBLuminanceSource(img, img.Width, img.Height);
Binarizer[] binarizer = { new HybridBinarizer(j), new GlobalHistogramBinarizer(j) };
Reader[] reader = { new QRCodeReader(), new ByQuadrantReader(new QRCodeReader()) };
Hashtable hints = new Hashtable();
hints[DecodeHintType.TRY_HARDER] = true;
hints[DecodeHintType.POSSIBLE_FORMATS] = BarcodeFormat.QR_CODE;
foreach (Binarizer b in binarizer) {
BinaryBitmap bitmap = new BinaryBitmap(b);
foreach (Reader r in reader) {
try {
qrc = r.decode(bitmap, hints);
} catch (SystemException) { continue; } catch (ReaderException) { continue; }
if (qrc != null)
break;
}
if (qrc != null)
break;
}
if (qrc != null) {
wasRotated = rotate;
break;
}
}
if (qrc != null)
break;
}
// Cleanup - and cleaup good
original.Dispose();
foreach (Bitmap img in strips)
img.Dispose();
return ((qrc != null) ? ifDecoded(file, qrc, wasRotated) : ifNotDecoded(file));
}
private string QRDecode(Bitmap image, Reader decoder)
{
/*
MemoryStream ms = new MemoryStream();
image.Save(ms,System.Drawing.Imaging.ImageFormat.Bmp);
DataMatrix dmDecoder = new DataMatrix(ms.ToArray(), image.Width, image.Height, EncodingType.Binary);
return dmDecoder.HexPbm;
* */
var rgb = new RGBLuminanceSource(image, image.Width, image.Height);
var hybrid = new HybridBinarizer(rgb);
BinaryBitmap binBitmap = new BinaryBitmap(hybrid);
string sdecodedString = decoder.decode(binBitmap, null).Text;
//Byte[] result = decoder.decode(binBitmap, null).;
//return null;
return sdecodedString;
}
private void Worker()
{
if(hints==null)
{
hints = new Hashtable();
hints.Add(com.google.zxing.DecodeHintType.POSSIBLE_FORMATS, this.Options.GetFormats());
hints.Add(com.google.zxing.DecodeHintType.NEED_RESULT_POINT_CALLBACK, new ResultCallBack(this));
}
if(_multiFormatReader == null)
{
//_multiFormatReader = new com.google.zxing.oned.MultiFormatOneDReader(hints);
_multiFormatReader = new com.google.zxing.MultiFormatReader();
_multiFormatReader.Hints = hints;
//_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
// } }
// }
// };
}
using (var ap = new NSAutoreleasePool())
{
// 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.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;
}
}
}
}
GC.Collect();
//Console.WriteLine("Done.");
}
private void ProcessImage(BarcodeCaptureResult captureResults) {
captureResults.State = CaptureState.Processing;
try {
bool bIsReady = captureResults.isReadyForProcessing.WaitOne(3000);
if (!bIsReady) {
captureResults.State = CaptureState.UnknownError;
captureResults.ErrorMessage = "Error: Timeout waiting for images to be processed. Please try again or send issue report using app bar.";
return;
}
if (captureResults.VGABarcodeImage != null)
{
var wb = captureResults.VGABarcodeImage;
//Code from: btnReadTag_Click in "SLZXingQRSample\SLZXingQRSample\SLZXingSample\MainPage.xaml.vb"
var qrRead = new com.google.zxing.oned.MultiFormatUPCEANReader(zxingHints); ; // new com.google.zxing.qrcode.QRCodeReader();
var luminiance = new RGBLuminanceSource(wb, 640, 480);
var binarizer = new com.google.zxing.common.HybridBinarizer(luminiance);
var binBitmap = new com.google.zxing.BinaryBitmap(binarizer);
var results = qrRead.decode(binBitmap, zxingHints); //NOTE: will throw exception if cannot decode image.
captureResults.BarcodeText = results.Text;
captureResults.State = CaptureState.Success;
BarcodeCaptured.Invoke(captureResults);
//captureResults.ProcessValue();
}
else {
captureResults.State = CaptureState.UnknownError;
captureResults.ErrorMessage = "Cannot process image: invalid or null BitmapImage.";
}
}
catch (Exception ex) {
captureResults.ExceptionThrown = ex;
if (ex is com.google.zxing.ReaderException) {
captureResults.ErrorMessage = "Error: Cannot decode barcode image. Please make sure scan mode is correct and try again.";
captureResults.State = CaptureState.ScanFailed;
}
else {
Debug.WriteLine("Error: " + ex.ToString());
captureResults.ErrorMessage = String.Format("Barcode Library Processing Error: {0}\r\n{1}", ex.GetType(), ex.Message);
captureResults.State = CaptureState.UnknownError;
}
}
finally
{
lock (_resultTaskLock)
{
_resultTask = null;
}
}
}
private void Worker()
{
float fY1;
float fY2;
float scale;
// calculate picFrame just once
if (picFrame == RectangleF.Empty)
{
// check if device has retina display, if so scale factor by 2
if (UIScreen.MainScreen.RespondsToSelector(new MonoTouch.ObjCRuntime.Selector(@"scale")) &&
UIScreen.MainScreen.Scale == 2)
scale = 2f;
else
scale = 1f;
// check if the device is an ipad or an iphone
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone)
{
fY1 = 146f / UIScreen.MainScreen.Bounds.Height * scale;
fY2 = 157f / UIScreen.MainScreen.Bounds.Height * scale;
}
else
{
// ipad - constants probably need to be modified if running at native screen res
fY1 = 146f / UIScreen.MainScreen.Bounds.Height * scale;
fY2 = 157f / UIScreen.MainScreen.Bounds.Height * scale;
}
picFrame = new RectangleF(0, UIScreen.MainScreen.Bounds.Height * fY1, UIScreen.MainScreen.Bounds.Width * scale, UIScreen.MainScreen.Bounds.Height * fY2);
}
if(hints==null)
{
var list = new ArrayList();
list.Add(com.google.zxing.BarcodeFormat.EAN_8);
list.Add(com.google.zxing.BarcodeFormat.EAN_13);
hints = new Hashtable();
hints.Add(com.google.zxing.DecodeHintType.POSSIBLE_FORMATS, list);
hints.Add(com.google.zxing.DecodeHintType.NEED_RESULT_POINT_CALLBACK, new ResultCallBack(this));
}
if(_multiFormatOneDReader == null)
{
_multiFormatOneDReader = new com.google.zxing.oned.MultiFormatOneDReader(hints);
}
// Capturing screen image
using (var screenImage = CGImage.ScreenImage.WithImageInRect(picFrame))
{
_theScreenImage = UIImage.FromImage(screenImage);
Bitmap srcbitmap = new System.Drawing.Bitmap(_theScreenImage);
LuminanceSource source = null;
BinaryBitmap bitmap = null;
try {
source = new RGBLuminanceSource(srcbitmap, screenImage.Width, screenImage.Height);
bitmap = new BinaryBitmap(new HybridBinarizer(source));
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 = _multiFormatOneDReader.decodeRow(rowNumber, row, hints);
if(resultb.Text!=null)
{
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;
}
}
}
private Result DetectQRC(string file, Hashtable hints)
{
Image img = null;
LuminanceSource source = null;
BinaryBitmap bitmap = null;
Binarizer binarizer = null;
Reader reader = null;
Result QRCodeResult = null;
img = Image.FromFile(file);
Bitmap bmp = new Bitmap(img);
source = new RGBLuminanceSource(bmp, img.Width, img.Height);
ZXingConfig[] configs = ZXingConfig.getInstances(source);
foreach (ZXingConfig config in configs) {
reader = config.reader;
binarizer = config.binarizer;
bitmap = new BinaryBitmap(binarizer);
try {
QRCodeResult = reader.decode(bitmap, hints);
} catch (Exception) {
}
}
return QRCodeResult;
}
void decoder_DoWork(object sender, DoWorkEventArgs e)
{
Bitmap bmp = (Bitmap)e.Argument;
QRCodeReader reader = new QRCodeReader();
RGBLuminanceSource source = new RGBLuminanceSource(bmp, bmp.Width, bmp.Height);
BinaryBitmap binDecode = new BinaryBitmap(new HybridBinarizer(source));
String decodedString = "";
Result result;
try
{
result = (Result)reader.decode(binDecode);
decodedString = result.Text;
}
catch (ReaderException)
{
decodedString = "";
}
if (decodedString == "")
{
toolStripStatusLabel1.Text = "Scan a Player ID";
}
else
{
String[] items = (decodedString).Split('|');
this.Invoke((MethodInvoker)delegate//run on UI thread
{
label_Name.Text = "Name: " + items[0];
label_Kill.Text = "Kill ID: " + items[1];
toolStripStatusLabel1.Text = "Decoded";
});
}
}
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 { }
}
}
private string DecodeImage(Image image)
{
//image = image.Substring("data:image/png;base64,".Length);
//var buffer = Convert.FromBase64String(image);
//// TODO: I am saving the image on the hard disk but
//// you could do whatever processing you want with it
//string documentName = DateTime.Now.ToString("yyyyMMddHHmmssfff")+".png";
//System.IO.File.WriteAllBytes(Server.MapPath("~/app_data/"+documentName), buffer);
//byte[] bytes = Convert.FromBase64String(image);
//Image _image;
//using (MemoryStream ms = new MemoryStream(bytes))
//{
// _image = Image.FromStream(ms);
//}
Result result = null;
try
{
Reader reader = new com.google.zxing.MultiFormatReader();
Bitmap image1 = new Bitmap(image);
LuminanceSource source = new RGBLuminanceSource(image1, image1.Width, image1.Height);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
result = reader.decode(bitmap);
//QRCodeDecoder decoder = new QRCodeDecoder();
////QRCodeDecoder.Canvas = new ConsoleCanvas();
//String decodedString = decoder.decode(new QRCodeBitmapImage(new Bitmap(_image)));
////txtDecodedData.Text = decodedString;
}
catch
{
return null;
}
return result.Text;
}
/// Processes the specified bitmap.
public string Process(Bitmap bitmap)
{
try
{
com.google.zxing.LuminanceSource source = new RGBLuminanceSource(bitmap, bitmap.Width, bitmap.Height);
var binarizer = new HybridBinarizer(source);
var binBitmap = new BinaryBitmap(binarizer);
return reader.decode(binBitmap).Text;
}
catch
{
return string.Empty;
}
}
