first commit

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Custom for Visual Studio
+*.cs     diff=csharp
+*.sln    merge=union
+*.csproj merge=union
+*.vbproj merge=union
+*.fsproj merge=union
+*.dbproj merge=union
+
+# Standard to msysgit
+*.doc	 diff=astextplain
+*.DOC	 diff=astextplain
+*.docx diff=astextplain
+*.DOCX diff=astextplain
+*.dot  diff=astextplain
+*.DOT  diff=astextplain
+*.pdf  diff=astextplain
+*.PDF	 diff=astextplain
+*.rtf	 diff=astextplain
+*.RTF	 diff=astextplain

.gitignore

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+#################
+## Eclipse
+#################
+
+*.pydevproject
+.project
+.metadata
+bin/
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.classpath
+.settings/
+.loadpath
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# CDT-specific
+.cproject
+
+# PDT-specific
+.buildpath
+
+
+#################
+## Visual Studio
+#################
+
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+
+# Build results
+
+[Dd]ebug/
+[Rr]elease/
+x64/
+build/
+[Bb]in/
+[Oo]bj/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+*_i.c
+*_p.c
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.log
+*.scc
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+*.ncrunch*
+.*crunch*.local.xml
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.Publish.xml
+*.pubxml
+
+# NuGet Packages Directory
+## TODO: If you have NuGet Package Restore enabled, uncomment the next line
+#packages/
+
+# Windows Azure Build Output
+csx
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+sql/
+*.Cache
+ClientBin/
+[Ss]tyle[Cc]op.*
+~$*
+*~
+*.dbmdl
+*.[Pp]ublish.xml
+*.pfx
+*.publishsettings
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file to a newer
+# Visual Studio version. Backup files are not needed, because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+App_Data/*.mdf
+App_Data/*.ldf
+
+#############
+## Windows detritus
+#############
+
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Mac crap
+.DS_Store
+
+
+#############
+## Python
+#############
+
+*.py[co]
+
+# Packages
+*.egg
+*.egg-info
+dist/
+build/
+eggs/
+parts/
+var/
+sdist/
+develop-eggs/
+.installed.cfg
+
+# Installer logs
+pip-log.txt
+
+# Unit test / coverage reports
+.coverage
+.tox
+
+#Translations
+*.mo
+
+#Mr Developer
+.mr.developer.cfg

JOB.js

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+/**
+ * CallBacks:
+ * __________________________________________________________________________________
+ * All the callback function should have one parameter:
+ * function(result){};
+ * And the result parameter will contain an array of objects that look like JOB.
+ * result = [{Format: the barcode type, Value: the value of the barcode}];
+ * __________________________________________________________________________________
+ *
+ * You can use either the set functions or just access the properties directly to set callback or
+ * other properties. Just always remember to call Init() before starting to decode something never mess
+ * around with the SupportedFormats property.
+ *
+ */
+JOB = {
+	Config : {
+		// Set to false if the decoder should look for one barcode and then stop. Increases performance.
+		Multiple : true,
+
+		// The formats that the decoder will look for.
+		DecodeFormats : ["Code128","Code93","Code39","EAN-13", "2Of5", "Inter2Of5", "Codabar"],
+
+		// ForceUnique just must makes sure that the callback function isn't repeatedly called
+		// with the same barcode. Especially in the case of a video stream.
+		ForceUnique: true,
+
+		// Set to true if information about the localization should be recieved from the worker.
+		LocalizationFeedback: false,
+
+		// Set to true if checking orientation of the image should be skipped.
+		// Checking orientation takes a bit of time for larger images, so if
+		// you are sure that the image orientation is 1 you should skip it.
+		SkipOrientation : false
+	},
+	SupportedFormats : ["Code128","Code93","Code39","EAN-13", "2Of5", "Inter2Of5", "Codabar"],// Don't touch.
+	ScanCanvas : null, // Don't touch the canvas either.
+	ScanContext : null,
+	SquashCanvas : document.createElement("canvas"),
+	ImageCallback : null, // Callback for the decoding of an image.
+	StreamCallback : null, // Callback for the decoding of a video.
+	LocalizationCallback : null, // Callback for localization.
+	Stream : null, // The actual video.
+	DecodeStreamActive : false, // Will be set to false when StopStreamDecode() is called.
+	Decoded : [], // Used to enfore the ForceUnique property.
+	DecoderWorker : new Worker("DecoderWorker.js"),
+	OrientationCallback : null,
+	// Always call the Init().
+	Init : function() {
+		JOB.ScanCanvas = JOB.FixCanvas(document.createElement("canvas"));
+		JOB.ScanCanvas.width = 640;
+		JOB.ScanCanvas.height = 480;
+		JOB.ScanContext = JOB.ScanCanvas.getContext("2d");
+		var script  = document.createElement('script');
+  		script.src  = "exif.js";
+ 		script.type = 'text/javascript';
+		document.getElementsByTagName('head').item(0).appendChild(script);
+	},
+
+	// Value should be true or false.
+	SetRotationSkip : function(value) {
+		JOB.Config.SkipOrientation = value;
+	},
+	// Sets the callback function for the image decoding.
+	SetImageCallback : function(callBack) {
+		JOB.ImageCallback = callBack;
+	},
+
+	// Sets the callback function for the video decoding.
+	SetStreamCallback : function(callBack) {
+		JOB.StreamCallback = callBack;
+	},
+
+	// Sets callback for localization, the callback function should take one argument.
+	// This will be an array with objects with format.
+	// {x, y, width, height}
+	// This represents a localization rectangle.
+	// The rectangle comes from a 320, 240 area i.e the search canvas.
+	SetLocalizationCallback : function(callBack) {
+		JOB.LocalizationCallback = callBack;
+		JOB.Config.LocalizationFeedback = true;
+	},
+
+	// Set to true if LocalizationCallback is set and you would like to
+	// receive the feedback or false if
+	SwitchLocalizationFeedback : function(bool) {
+		JOB.Config.LocalizationFeedback = bool;
+	},
+
+	// Switches for changing the Multiple property.
+	DecodeSingleBarcode : function() {
+		JOB.Config.Multiple = false;
+	},
+	DecodeMultiple : function() {
+		JOB.Config.Multiple = true;
+	},
+
+	// Sets the formats to decode, formats should be an array of a subset of the supported formats.
+	SetDecodeFormats : function(formats) {
+		JOB.Config.DecodeFormats = [];
+		for(var i = 0; i < formats.length; i++) {
+			if(JOB.SupportedFormats.indexOf(formats[i]) != -1) {
+				JOB.Config.DecodeFormats.push(formats[i]);
+			}
+		}
+		if(JOB.Config.DecodeFormats.length == 0) {
+			JOB.Config.DecodeFormats = JOB.SupportedFormats.slice();
+		}
+	},
+
+	// Removes a list of formats from the formats to decode.
+	SkipFormats : function(formats) {
+		for(var i = 0; i < formats.length; i++) {
+			var index = JOB.Config.DecodeFormats.indexOf(formats[i]);
+			if(index >= 0) {
+				JOB.Config.DecodeFormats.splice(index,1);
+			}
+		}
+	},
+
+	// Adds a list of formats to the formats to decode.
+	AddFormats : function(formats) {
+		for(var i = 0; i < formats.length; i++) {
+			if(JOB.SupportedFormats.indexOf(formats[i]) != -1) {
+				if(JOB.Config.DecodeFormats.indexOf(formats[i]) == -1) {
+					JOB.Config.DecodeFormats.push(formats[i]);
+				}
+			}
+		}
+	},
+
+	// The callback function for image decoding used internally by JOB.
+	JOBImageCallback : function(e) {
+		if(e.data.success == "localization") {
+			if(JOB.Config.LocalizationFeedback) {
+				JOB.LocalizationCallback(e.data.result);
+			}
+			return;
+		}
+		if(e.data.success == "orientationData") {
+			JOB.OrientationCallback(e.data.result);
+			return;
+		}
+		var filteredData = [];
+		for(var i = 0; i < e.data.result.length; i++) {
+			if(JOB.Decoded.indexOf(e.data.result[i].Value) == -1 || JOB.Config.ForceUnique == false) {
+				filteredData.push(e.data.result[i]);
+				if(JOB.Config.ForceUnique) JOB.Decoded.push(e.data.result[i].Value);
+			}
+		}
+		JOB.ImageCallback(filteredData);
+		JOB.Decoded = [];
+	},
+
+	// The callback function for stream decoding used internally by JOB.
+	JOBStreamCallback : function(e) {
+		if(e.data.success == "localization") {
+			if(JOB.Config.LocalizationFeedback) {
+				JOB.LocalizationCallback(e.data.result);
+			}
+			return;
+		}
+		if(e.data.success && JOB.DecodeStreamActive) {
+			var filteredData = [];
+			for(var i = 0; i < e.data.result; i++) {
+				if(JOB.Decoded.indexOf(e.data.result[i].Value) == -1 || JOB.ForceUnique == false) {
+					filteredData.push(e.data.result[i]);
+					if(JOB.ForceUnique) JOB.Decoded.push(e.data.result[i].Value);
+				}
+			}
+			if(filteredData.length > 0) {
+				JOB.StreamCallback(filteredData);
+			}
+		}
+		if(JOB.DecodeStreamActive) {
+			JOB.ScanContext.drawImage(JOB.Stream,0,0,JOB.ScanCanvas.width,JOB.ScanCanvas.height);
+			JOB.DecoderWorker.postMessage({
+				scan : JOB.ScanContext.getImageData(0,0,JOB.ScanCanvas.width,JOB.ScanCanvas.height).data,
+				scanWidth : JOB.ScanCanvas.width,
+				scanHeight : JOB.ScanCanvas.height,
+				multiple : JOB.Config.Multiple,
+				decodeFormats : JOB.Config.DecodeFormats,
+				cmd : "normal",
+				rotation : 1,
+			});
+
+		}
+		if(!JOB.DecodeStreamActive) {
+			JOB.Decoded = [];
+		}
+	},
+
+	// The image decoding function, image is a data source for an image or an image element.
+	DecodeImage : function(image) {
+		if(image instanceof Image || image instanceof HTMLImageElement)
+		{
+			image.exifdata = false;
+			if(image.complete) {
+				if(JOB.Config.SkipOrientation) {
+					JOB.JOBDecodeImage(image,1,"");
+				} else {
+					EXIF.getData(image, function(exifImage) {
+						var orientation = EXIF.getTag(exifImage,"Orientation");
+						var sceneType = EXIF.getTag(exifImage,"SceneCaptureType");
+						if(typeof orientation != 'number') orientation = 1;
+						JOB.JOBDecodeImage(exifImage,orientation,sceneType);
+					});
+				}
+			} else {
+				var img = new Image();
+				img.onload = function() {
+					if(JOB.Config.SkipOrientation) {
+						JOB.JOBDecodeImage(img,1,"");
+					} else {
+						EXIF.getData(this, function(exifImage) {
+							var orientation = EXIF.getTag(exifImage,"Orientation");
+							var sceneType = EXIF.getTag(exifImage,"SceneCaptureType");
+							if(typeof orientation != 'number') orientation = 1;
+							JOB.JOBDecodeImage(exifImage,orientation,sceneType);
+						});
+					}
+				};
+				img.src = image.src;
+			}
+		} else {
+			var img = new Image();
+			img.onload = function() {
+				if(JOB.Config.SkipOrientation) {
+					JOB.JOBDecodeImage(img,1,"");
+				} else {
+					EXIF.getData(this, function(exifImage) {
+						var orientation = EXIF.getTag(exifImage,"Orientation");
+						var sceneType = EXIF.getTag(exifImage,"SceneCaptureType");
+						if(typeof orientation != 'number') orientation = 1;
+						JOB.JOBDecodeImage(exifImage,orientation,sceneType);
+					});
+				}
+			};
+			img.src = image;
+		}
+	},
+
+	// Starts the decoding of a stream, the stream is a video not a blob i.e it's an element.
+	DecodeStream : function(stream) {
+		JOB.Stream = stream;
+		JOB.DecodeStreamActive = true;
+		JOB.DecoderWorker.onmessage = JOB.JOBStreamCallback;
+		JOB.ScanContext.drawImage(stream,0,0,JOB.ScanCanvas.width,JOB.ScanCanvas.height);
+		JOB.DecoderWorker.postMessage({
+			scan : JOB.ScanContext.getImageData(0,0,JOB.ScanCanvas.width,JOB.ScanCanvas.height).data,
+			scanWidth : JOB.ScanCanvas.width,
+			scanHeight : JOB.ScanCanvas.height,
+			multiple : JOB.Config.Multiple,
+			decodeFormats : JOB.Config.DecodeFormats,
+			cmd : "normal",
+			rotation : 1,
+		});
+		var onmessage = JOB.DecoderWorker.onmessage;
+		JOB.DecoderWorker.onmessage = function (data) {
+			onmessage(data);
+			if (data.data.success !== 'localization') {
+				console.log('onmessage', data);
+			}
+		};
+	},
+
+	// Stops the decoding of a stream.
+	StopStreamDecode : function() {
+		JOB.DecodeStreamActive = false;
+		JOB.Decoded = [];
+	},
+
+	JOBDecodeImage : function (image,orientation,sceneCaptureType) {
+		if(orientation == 8 || orientation == 6) {
+			if(sceneCaptureType == "Landscape" && image.width > image.height) {
+				orientation = 1;
+				JOB.ScanCanvas.width = 640;
+				JOB.ScanCanvas.height = 480;
+			} else {
+				JOB.ScanCanvas.width = 480;
+				JOB.ScanCanvas.height = 640;
+			}
+		} else {
+			JOB.ScanCanvas.width = 640;
+			JOB.ScanCanvas.height = 480;
+		}
+		JOB.DecoderWorker.onmessage = JOB.JOBImageCallback;
+		JOB.ScanContext.drawImage(image,0,0,JOB.ScanCanvas.width,JOB.ScanCanvas.height);
+		JOB.Orientation = orientation;
+		JOB.DecoderWorker.postMessage({
+			scan : JOB.ScanContext.getImageData(0,0,JOB.ScanCanvas.width,JOB.ScanCanvas.height).data,
+			scanWidth : JOB.ScanCanvas.width,
+			scanHeight : JOB.ScanCanvas.height,
+			multiple : JOB.Config.Multiple,
+			decodeFormats : JOB.Config.DecodeFormats,
+			cmd : "normal",
+			rotation : orientation,
+			postOrientation : JOB.PostOrientation
+		});
+	},
+
+	DetectVerticalSquash : function (img) {
+    	var ih = img.naturalHeight;
+    	var canvas = JOB.SquashCanvas;
+    	canvas.width = 1;
+    	canvas.height = ih;
+    	var ctx = canvas.getContext('2d');
+    	ctx.drawImage(img, 0, 0);
+    	try {
+        	var data = ctx.getImageData(0, 0, 1, ih).data;
+    	} catch (err) {
+        	console.log("Cannot check verticalSquash: CORS?");
+        	return 1;
+    	}
+    	var sy = 0;
+    	var ey = ih;
+    	var py = ih;
+    	while (py > sy) {
+        	var alpha = data[(py - 1) * 4 + 3];
+        	if (alpha === 0) {
+        	    ey = py;
+        	} else {
+            	sy = py;
+        	}
+        	py = (ey + sy) >> 1;
+    	}
+    	var ratio = (py / ih);
+    	return (ratio===0)?1:ratio;
+	},
+
+	FixCanvas : function (canvas)
+	{
+    	var ctx = canvas.getContext('2d');
+    	var drawImage = ctx.drawImage;
+    	ctx.drawImage = function(img, sx, sy, sw, sh, dx, dy, dw, dh)
+    	{
+        	var vertSquashRatio = 1;
+        	if (!!img && img.nodeName == 'IMG')
+        	{
+            	vertSquashRatio = JOB.DetectVerticalSquash(img);
+            	sw || (sw = img.naturalWidth);
+            	sh || (sh = img.naturalHeight);
+        	}
+        	if (arguments.length == 9)
+            	drawImage.call(ctx, img, sx, sy, sw, sh, dx, dy, dw, dh / vertSquashRatio);
+        	else if (typeof sw != 'undefined')
+            	drawImage.call(ctx, img, sx, sy, sw, sh / vertSquashRatio);
+        	else
+            	drawImage.call(ctx, img, sx, sy);
+    	};
+    	return canvas;
+	}
+};

README.md

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+BarcodeReader
+=============
+
+BarcodeReader is a barcode reader for Code128, Code93, Code39, Standard/Industrial 2 of 5,
+Interleaved 2 of 5, Codabar and EAN-13 barcodes in javascript.
+Supports multiple barcodes in one image and detects what type of barcodes there are.
+
+It seems that the issue with smartphones might have been one of exif orientation tags so there's a fix in BarcodeReader now and also a fix for some kind of downsampling issue for iOS.
+
+***
+If you like and/or use this project for commercial purposes consider donating to support my work.  
+<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=G5G3LGA8QRA6S"><img src="https://www.paypal.com/en_US/i/btn/btn_donateCC_LG.gif" alt="PayPal - The safer, easier way to pay online!" /></a>
+***
+
+Version 1.6 is up with a completely reworked localization process and also added a BarcodeReader object to facilitate more ease of use. Just reference BarcodeReader.js, always execute a call to BarcodeReader.Init() in the beginning and then for decoding of images set callback function using BarcodeReader.SetImageCallback(callback) and then call BarcodeReader.DecodeImage(img). Also added functionality in BarcodeReader to decode a video stream for use with getUserMedia, which was the original idea. Hopefully this localization will be a significant improvement and I will in the (hopefully) near future do a rework of the decoding algorithm to make it a bit faster and more accurate.
+
+## Change Log
+
+### v1.6.1
+
+- Added video support to the jQuery plugin
+- Fire event when barcode is decoded
+- Refactored jQuery elements allowing support for your own
+- Flipped video to make it easier to position the barcode