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<title>QRY {curie} QR Code Reader — Shiny Demos</title>
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<a href="https://github.com/LazarSoft/jsqrcode LazarSoft's jsQRcode implementation" target="_blank">https://github.com/LazarSoft/jsqrcode LazarSoft's jsQRcode implementation</a>
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/*
Ported to JavaScript by Lazar Laszlo 2011
<p>[email protected], www.lazarsoft.info</p>
<a href="https://github.com/LazarSoft/jsqrcode" target="_blank">https://github.com/LazarSoft/jsqrcode</a>
*//*
*
* Copyright 2007 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* <a href="http://www.apache.org/licenses/LICENSE-2.0" target="_blank">http://www.apache.org/licenses/LICENSE-2.0</a>
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
GridSampler={},GridSampler.checkAndNudgePoints=function(image,points){var width=qrcode.width,height=qrcode.height,nudged=!0;for(var offset=0;offset<points.Length&&nudged;offset+=2){var x=Math.floor(points[offset]),y=Math.floor(points[offset+1]);if(x<-1||x>width||y<-1||y>height)throw"Error.checkAndNudgePoints ";nudged=!1,x==-1?(points[offset]=0,nudged=!0):x==width&&(points[offset]=width-1,nudged=!0),y==-1?(points[offset+1]=0,nudged=!0):y==height&&(points[offset+1]=height-1,nudged=!0)}nudged=!0;for(var offset=points.Length-2;offset>=0&&nudged;offset-=2){var x=Math.floor(points[offset]),y=Math.floor(points[offset+1]);if(x<-1||x>width||y<-1||y>height)throw"Error.checkAndNudgePoints ";nudged=!1,x==-1?(points[offset]=0,nudged=!0):x==width&&(points[offset]=width-1,nudged=!0),y==-1?(points[offset+1]=0,nudged=!0):y==height&&(points[offset+1]=height-1,nudged=!0)}},GridSampler.sampleGrid3=function(image,dimension,transform){var bits=new BitMatrix(dimension),points=new Array(dimension<<1);for(var y=0;y<dimension;y++){var max=points.length,iValue=y+.5;for(var x=0;x<max;x+=2)points[x]=(x>>1)+.5,points[x+1]=iValue;transform.transformPoints1(points),GridSampler.checkAndNudgePoints(image,points);try{for(var x=0;x<max;x+=2){var xpoint=Math.floor(points[x])*4+Math.floor(points[x+1])*qrcode.width*4,bit=image[Math.floor(points[x])+qrcode.width*Math.floor(points[x+1])];qrcode.imagedata.data[xpoint]=bit?255:0,qrcode.imagedata.data[xpoint+1]=bit?255:0,qrcode.imagedata.data[xpoint+2]=0,qrcode.imagedata.data[xpoint+3]=255,bit&&bits.set_Renamed(x>>1,y)}}catch(aioobe){throw"Error.checkAndNudgePoints"}}return bits},GridSampler.sampleGridx=function(image,dimension,p1ToX,p1ToY,p2ToX,p2ToY,p3ToX,p3ToY,p4ToX,p4ToY,p1FromX,p1FromY,p2FromX,p2FromY,p3FromX,p3FromY,p4FromX,p4FromY){var transform=PerspectiveTransform.quadrilateralToQuadrilateral(p1ToX,p1ToY,p2ToX,p2ToY,p3ToX,p3ToY,p4ToX,p4ToY,p1FromX,p1FromY,p2FromX,p2FromY,p3FromX,p3FromY,p4FromX,p4FromY);return GridSampler.sampleGrid3(image,dimension,transform)};function ECB(count,dataCodewords){this.count=count,this.dataCodewords=dataCodewords,this.__defineGetter__("Count",function(){return this.count}),this.__defineGetter__("DataCodewords",function(){return this.dataCodewords})}function ECBlocks(ecCodewordsPerBlock,ecBlocks1,ecBlocks2){this.ecCodewordsPerBlock=ecCodewordsPerBlock,ecBlocks2?this.ecBlocks=new Array(ecBlocks1,ecBlocks2):this.ecBlocks=new Array(ecBlocks1),this.__defineGetter__("ECCodewordsPerBlock",function(){return this.ecCodewordsPerBlock}),this.__defineGetter__("TotalECCodewords",function(){return this.ecCodewordsPerBlock*this.NumBlocks}),this.__defineGetter__("NumBlocks",function(){var total=0;for(var i=0;i<this.ecBlocks.length;i++)total+=this.ecBlocks[i].length;return total}),this.getECBlocks=function(){return this.ecBlocks}}function Version(versionNumber,alignmentPatternCenters,ecBlocks1,ecBlocks2,ecBlocks3,ecBlocks4){this.versionNumber=versionNumber,this.alignmentPatternCenters=alignmentPatternCenters,this.ecBlocks=new Array(ecBlocks1,ecBlocks2,ecBlocks3,ecBlocks4);var total=0,ecCodewords=ecBlocks1.ECCodewordsPerBlock,ecbArray=ecBlocks1.getECBlocks();for(var i=0;i<ecbArray.length;i++){var ecBlock=ecbArray[i];total+=ecBlock.Count*(ecBlock.DataCodewords+ecCodewords)}this.totalCodewords=total,this.__defineGetter__("VersionNumber",function(){return this.versionNumber}),this.__defineGetter__("AlignmentPatternCenters",function(){return this.alignmentPatternCenters}),this.__defineGetter__("TotalCodewords",function(){return this.totalCodewords}),this.__defineGetter__("DimensionForVersion",function(){return 17+4*this.versionNumber}),this.buildFunctionPattern=function(){var dimension=this.DimensionForVersion,bitMatrix=new BitMatrix(dimension);bitMatrix.setRegion(0,0,9,9),bitMatrix.setRegion(dimension-8,0,8,9),bitMatrix.setRegion(0,dimension-8,9,8);var max=this.alignmentPatternCenters.length;for(var x=0;x<max;x++){var i=this.alignmentPatternCenters[x]-2;for(var y=0;y<max;y++){if(x==0&&(y==0||y==max-1)||x==max-1&&y==0)continue;bitMatrix.setRegion(this.alignmentPatternCenters[y]-2,i,5,5)}}return bitMatrix.setRegion(6,9,1,dimension-17),bitMatrix.setRegion(9,6,dimension-17,1),this.versionNumber>6&&(bitMatrix.setRegion(dimension-11,0,3,6),bitMatrix.setRegion(0,dimension-11,6,3)),bitMatrix},this.getECBlocksForLevel=function(ecLevel){return this.ecBlocks[ecLevel.ordinal()]}}Version.VERSION_DECODE_INFO=new Array(31892,34236,39577,42195,48118,51042,55367,58893,63784,68472,70749,76311,79154,84390,87683,92361,96236,102084,102881,110507,110734,117786,119615,126325,127568,133589,136944,141498,145311,150283,152622,158308,161089,167017),Version.VERSIONS=buildVersions(),Version.getVersionForNumber=function(versionNumber){if(versionNumber<1||versionNumber>40)throw"ArgumentException";return Version.VERSIONS[versionNumber-1]},Version.getProvisionalVersionForDimension=function(dimension){if(dimension%4!=1)throw"Error getProvisionalVersionForDimension";try{return Version.getVersionForNumber(dimension-17>>2)}catch(iae){throw"Error getVersionForNumber"}},Version.decodeVersionInformation=function(versionBits){var bestDifference=4294967295,bestVersion=0;for(var i=0;i<Version.VERSION_DECODE_INFO.length;i++){var targetVersion=Version.VERSION_DECODE_INFO[i];if(targetVersion==versionBits)return this.getVersionForNumber(i+7);var bitsDifference=FormatInformation.numBitsDiffering(versionBits,targetVersion);bitsDifference<bestDifference&&(bestVersion=i+7,bestDifference=bitsDifference)}return bestDifference<=3?this.getVersionForNumber(bestVersion):null};function buildVersions(){return new Array(new Version(1,new Array,new ECBlocks(7,new ECB(1,19)),new ECBlocks(10,new ECB(1,16)),new ECBlocks(13,new ECB(1,13)),new ECBlocks(17,new ECB(1,9))),new Version(2,new Array(6,18),new ECBlocks(10,new ECB(1,34)),new ECBlocks(16,new ECB(1,28)),new ECBlocks(22,new ECB(1,22)),new ECBlocks(28,new ECB(1,16))),new Version(3,new Array(6,22),new ECBlocks(15,new ECB(1,55)),new ECBlocks(26,new ECB(1,44)),new ECBlocks(18,new ECB(2,17)),new ECBlocks(22,new ECB(2,13))),new Version(4,new Array(6,26),new ECBlocks(20,new ECB(1,80)),new ECBlocks(18,new ECB(2,32)),new ECBlocks(26,new ECB(2,24)),new ECBlocks(16,new ECB(4,9))),new Version(5,new Array(6,30),new ECBlocks(26,new ECB(1,108)),new ECBlocks(24,new ECB(2,43)),new ECBlocks(18,new ECB(2,15),new ECB(2,16)),new ECBlocks(22,new ECB(2,11),new ECB(2,12))),new Version(6,new Array(6,34),new ECBlocks(18,new ECB(2,68)),new ECBlocks(16,new ECB(4,27)),new ECBlocks(24,new ECB(4,19)),new ECBlocks(28,new ECB(4,15))),new Version(7,new Array(6,22,38),new ECBlocks(20,new ECB(2,78)),new ECBlocks(18,new ECB(4,31)),new ECBlocks(18,new ECB(2,14),new ECB(4,15)),new ECBlocks(26,new ECB(4,13),new ECB(1,14))),new Version(8,new Array(6,24,42),new ECBlocks(24,new ECB(2,97)),new ECBlocks(22,new ECB(2,38),new ECB(2,39)),new ECBlocks(22,new ECB(4,18),new ECB(2,19)),new ECBlocks(26,new ECB(4,14),new ECB(2,15))),new Version(9,new Array(6,26,46),new ECBlocks(30,new ECB(2,116)),new ECBlocks(22,new ECB(3,36),new ECB(2,37)),new ECBlocks(20,new ECB(4,16),new ECB(4,17)),new ECBlocks(24,new ECB(4,12),new ECB(4,13))),new Version(10,new Array(6,28,50),new ECBlocks(18,new ECB(2,68),new ECB(2,69)),new ECBlocks(26,new ECB(4,43),new ECB(1,44)),new ECBlocks(24,new ECB(6,19),new ECB(2,20)),new ECBlocks(28,new ECB(6,15),new ECB(2,16))),new Version(11,new Array(6,30,54),new ECBlocks(20,new ECB(4,81)),new ECBlocks(30,new ECB(1,50),new ECB(4,51)),new ECBlocks(28,new ECB(4,22),new ECB(4,23)),new ECBlocks(24,new ECB(3,12),new ECB(8,13))),new Version(12,new Array(6,32,58),new ECBlocks(24,new ECB(2,92),new ECB(2,93)),new ECBlocks(22,new ECB(6,36),new ECB(2,37)),new ECBlocks(26,new ECB(4,20),new ECB(6,21)),new ECBlocks(28,new ECB(7,14),new ECB(4,15))),new Version(13,new Array(6,34,62),new ECBlocks(26,new ECB(4,107)),new ECBlocks(22,new ECB(8,37),new ECB(1,38)),new ECBlocks(24,new ECB(8,20),new ECB(4,21)),new ECBlocks(22,new ECB(12,11),new ECB(4,12))),new Version(14,new Array(6,26,46,66),new ECBlocks(30,new ECB(3,115),new ECB(1,116)),new ECBlocks(24,new ECB(4,40),new ECB(5,41)),new ECBlocks(20,new ECB(11,16),new ECB(5,17)),new ECBlocks(24,new ECB(11,12),new ECB(5,13))),new Version(15,new Array(6,26,48,70),new ECBlocks(22,new ECB(5,87),new ECB(1,88)),new ECBlocks(24,new ECB(5,41),new ECB(5,42)),new ECBlocks(30,new ECB(5,24),new ECB(7,25)),new ECBlocks(24,new ECB(11,12),new ECB(7,13))),new Version(16,new Array(6,26,50,74),new ECBlocks(24,new ECB(5,98),new ECB(1,99)),new ECBlocks(28,new ECB(7,45),new ECB(3,46)),new ECBlocks(24,new ECB(15,19),new ECB(2,20)),new ECBlocks(30,new ECB(3,15),new ECB(13,16))),new Version(17,new Array(6,30,54,78),new ECBlocks(28,new ECB(1,107),new ECB(5,108)),new ECBlocks(28,new ECB(10,46),new ECB(1,47)),new ECBlocks(28,new ECB(1,22),new ECB(15,23)),new ECBlocks(28,new ECB(2,14),new ECB(17,15))),new Version(18,new Array(6,30,56,82),new ECBlocks(30,new ECB(5,120),new ECB(1,121)),new ECBlocks(26,new ECB(9,43),new ECB(4,44)),new ECBlocks(28,new ECB(17,22),new ECB(1,23)),new ECBlocks(28,new ECB(2,14),new ECB(19,15))),new Version(19,new Array(6,30,58,86),new ECBlocks(28,new ECB(3,113),new ECB(4,114)),new ECBlocks(26,new ECB(3,44),new ECB(11,45)),new ECBlocks(26,new ECB(17,21),new ECB(4,22)),new ECBlocks(26,new ECB(9,13),new ECB(16,14))),new Version(20,new Array(6,34,62,90),new ECBlocks(28,new ECB(3,107),new ECB(5,108)),new ECBlocks(26,new ECB(3,41),new ECB(13,42)),new ECBlocks(30,new ECB(15,24),new ECB(5,25)),new ECBlocks(28,new ECB(15,15),new ECB(10,16))),new Version(21,new Array(6,28,50,72,94),new ECBlocks(28,new ECB(4,116),new ECB(4,117)),new ECBlocks(26,new ECB(17,42)),new ECBlocks(28,new ECB(17,22),new ECB(6,23)),new ECBlocks(30,new ECB(19,16),new ECB(6,17))),new Version(22,new Array(6,26,50,74,98),new ECBlocks(28,new ECB(2,111),new ECB(7,112)),new ECBlocks(28,new ECB(17,46)),new ECBlocks(30,new ECB(7,24),new ECB(16,25)),new ECBlocks(24,new ECB(34,13))),new Version(23,new Array(6,30,54,74,102),new ECBlocks(30,new ECB(4,121),new ECB(5,122)),new ECBlocks(28,new ECB(4,47),new ECB(14,48)),new ECBlocks(30,new ECB(11,24),new ECB(14,25)),new ECBlocks(30,new ECB(16,15),new ECB(14,16))),new Version(24,new Array(6,28,54,80,106),new ECBlocks(30,new ECB(6,117),new ECB(4,118)),new ECBlocks(28,new ECB(6,45),new ECB(14,46)),new ECBlocks(30,new ECB(11,24),new ECB(16,25)),new ECBlocks(30,new ECB(30,16),new ECB(2,17))),new Version(25,new Array(6,32,58,84,110),new ECBlocks(26,new ECB(8,106),new ECB(4,107)),new ECBlocks(28,new ECB(8,47),new ECB(13,48)),new ECBlocks(30,new ECB(7,24),new ECB(22,25)),new ECBlocks(30,new ECB(22,15),new ECB(13,16))),new Version(26,new Array(6,30,58,86,114),new ECBlocks(28,new ECB(10,114),new ECB(2,115)),new ECBlocks(28,new ECB(19,46),new ECB(4,47)),new ECBlocks(28,new ECB(28,22),new ECB(6,23)),new ECBlocks(30,new ECB(33,16),new ECB(4,17))),new Version(27,new Array(6,34,62,90,118),new ECBlocks(30,new ECB(8,122),new ECB(4,123)),new ECBlocks(28,new ECB(22,45),new ECB(3,46)),new ECBlocks(30,new ECB(8,23),new ECB(26,24)),new ECBlocks(30,new ECB(12,15),new ECB(28,16))),new Version(28,new Array(6,26,50,74,98,122),new ECBlocks(30,new ECB(3,117),new ECB(10,118)),new ECBlocks(28,new ECB(3,45),new ECB(23,46)),new ECBlocks(30,new ECB(4,24),new ECB(31,25)),new ECBlocks(30,new ECB(11,15),new ECB(31,16))),new Version(29,new Array(6,30,54,78,102,126),new ECBlocks(30,new ECB(7,116),new ECB(7,117)),new ECBlocks(28,new ECB(21,45),new ECB(7,46)),new ECBlocks(30,new ECB(1,23),new ECB(37,24)),new ECBlocks(30,new ECB(19,15),new ECB(26,16))),new Version(30,new Array(6,26,52,78,104,130),new ECBlocks(30,new ECB(5,115),new ECB(10,116)),new ECBlocks(28,new ECB(19,47),new ECB(10,48)),new ECBlocks(30,new ECB(15,24),new ECB(25,25)),new ECBlocks(30,new ECB(23,15),new ECB(25,16))),new Version(31,new Array(6,30,56,82,108,134),new ECBlocks(30,new ECB(13,115),new ECB(3,116)),new ECBlocks(28,new ECB(2,46),new ECB(29,47)),new ECBlocks(30,new ECB(42,24),new ECB(1,25)),new ECBlocks(30,new ECB(23,15),new ECB(28,16))),new Version(32,new Array(6,34,60,86,112,138),new ECBlocks(30,new ECB(17,115)),new ECBlocks(28,new ECB(10,46),new ECB(23,47)),new ECBlocks(30,new ECB(10,24),new ECB(35,25)),new ECBlocks(30,new ECB(19,15),new ECB(35,16))),new Version(33,new Array(6,30,58,86,114,142),new ECBlocks(30,new ECB(17,115),new ECB(1,116)),new ECBlocks(28,new ECB(14,46),new ECB(21,47)),new ECBlocks(30,new ECB(29,24),new ECB(19,25)),new ECBlocks(30,new ECB(11,15),new ECB(46,16))),new Version(34,new Array(6,34,62,90,118,146),new ECBlocks(30,new ECB(13,115),new ECB(6,116)),new ECBlocks(28,new ECB(14,46),new ECB(23,47)),new ECBlocks(30,new ECB(44,24),new ECB(7,25)),new ECBlocks(30,new ECB(59,16),new ECB(1,17))),new Version(35,new Array(6,30,54,78,102,126,150),new ECBlocks(30,new ECB(12,121),new ECB(7,122)),new ECBlocks(28,new ECB(12,47),new ECB(26,48)),new ECBlocks(30,new ECB(39,24),new ECB(14,25)),new ECBlocks(30,new ECB(22,15),new ECB(41,16))),new Version(36,new Array(6,24,50,76,102,128,154),new ECBlocks(30,new ECB(6,121),new ECB(14,122)),new ECBlocks(28,new ECB(6,47),new ECB(34,48)),new ECBlocks(30,new ECB(46,24),new ECB(10,25)),new ECBlocks(30,new ECB(2,15),new ECB(64,16))),new Version(37,new Array(6,28,54,80,106,132,158),new ECBlocks(30,new ECB(17,122),new ECB(4,123)),new ECBlocks(28,new ECB(29,46),new ECB(14,47)),new ECBlocks(30,new ECB(49,24),new ECB(10,25)),new ECBlocks(30,new ECB(24,15),new ECB(46,16))),new Version(38,new Array(6,32,58,84,110,136,162),new ECBlocks(30,new ECB(4,122),new ECB(18,123)),new ECBlocks(28,new ECB(13,46),new ECB(32,47)),new ECBlocks(30,new ECB(48,24),new ECB(14,25)),new ECBlocks(30,new ECB(42,15),new ECB(32,16))),new Version(39,new Array(6,26,54,82,110,138,166),new ECBlocks(30,new ECB(20,117),new ECB(4,118)),new ECBlocks(28,new ECB(40,47),new ECB(7,48)),new ECBlocks(30,new ECB(43,24),new ECB(22,25)),new ECBlocks(30,new ECB(10,15),new ECB(67,16))),new Version(40,new Array(6,30,58,86,114,142,170),new ECBlocks(30,new ECB(19,118),new ECB(6,119)),new ECBlocks(28,new ECB(18,47),new ECB(31,48)),new ECBlocks(30,new ECB(34,24),new ECB(34,25)),new ECBlocks(30,new ECB(20,15),new ECB(61,16))))}function PerspectiveTransform(a11,a21,a31,a12,a22,a32,a13,a23,a33){this.a11=a11,this.a12=a12,this.a13=a13,this.a21=a21,this.a22=a22,this.a23=a23,this.a31=a31,this.a32=a32,this.a33=a33,this.transformPoints1=function(points){var max=points.length,a11=this.a11,a12=this.a12,a13=this.a13,a21=this.a21,a22=this.a22,a23=this.a23,a31=this.a31,a32=this.a32,a33=this.a33;for(var i=0;i<max;i+=2){var x=points[i],y=points[i+1],denominator=a13*x+a23*y+a33;points[i]=(a11*x+a21*y+a31)/denominator,points[i+1]=(a12*x+a22*y+a32)/denominator}},this.transformPoints2=function(xValues,yValues){var n=xValues.length;for(var i=0;i<n;i++){var x=xValues[i],y=yValues[i],denominator=this.a13*x+this.a23*y+this.a33;xValues[i]=(this.a11*x+this.a21*y+this.a31)/denominator,yValues[i]=(this.a12*x+this.a22*y+this.a32)/denominator}},this.buildAdjoint=function(){return new PerspectiveTransform(this.a22*this.a33-this.a23*this.a32,this.a23*this.a31-this.a21*this.a33,this.a21*this.a32-this.a22*this.a31,this.a13*this.a32-this.a12*this.a33,this.a11*this.a33-this.a13*this.a31,this.a12*this.a31-this.a11*this.a32,this.a12*this.a23-this.a13*this.a22,this.a13*this.a21-this.a11*this.a23,this.a11*this.a22-this.a12*this.a21)},this.times=function(other){return new PerspectiveTransform(this.a11*other.a11+this.a21*other.a12+this.a31*other.a13,this.a11*other.a21+this.a21*other.a22+this.a31*other.a23,this.a11*other.a31+this.a21*other.a32+this.a31*other.a33,this.a12*other.a11+this.a22*other.a12+this.a32*other.a13,this.a12*other.a21+this.a22*other.a22+this.a32*other.a23,this.a12*other.a31+this.a22*other.a32+this.a32*other.a33,this.a13*other.a11+this.a23*other.a12+this.a33*other.a13,this.a13*other.a21+this.a23*other.a22+this.a33*other.a23,this.a13*other.a31+this.a23*other.a32+this.a33*other.a33)}}PerspectiveTransform.quadrilateralToQuadrilateral=function(x0,y0,x1,y1,x2,y2,x3,y3,x0p,y0p,x1p,y1p,x2p,y2p,x3p,y3p){var qToS=this.quadrilateralToSquare(x0,y0,x1,y1,x2,y2,x3,y3),sToQ=this.squareToQuadrilateral(x0p,y0p,x1p,y1p,x2p,y2p,x3p,y3p);return sToQ.times(qToS)},PerspectiveTransform.squareToQuadrilateral=function(x0,y0,x1,y1,x2,y2,x3,y3){return dy2=y3-y2,dy3=y0-y1+y2-y3,dy2==0&&dy3==0?new PerspectiveTransform(x1-x0,x2-x1,x0,y1-y0,y2-y1,y0,0,0,1):(dx1=x1-x2,dx2=x3-x2,dx3=x0-x1+x2-x3,dy1=y1-y2,denominator=dx1*dy2-dx2*dy1,a13=(dx3*dy2-dx2*dy3)/denominator,a23=(dx1*dy3-dx3*dy1)/denominator,new PerspectiveTransform(x1-x0+a13*x1,x3-x0+a23*x3,x0,y1-y0+a13*y1,y3-y0+a23*y3,y0,a13,a23,1))},PerspectiveTransform.quadrilateralToSquare=function(x0,y0,x1,y1,x2,y2,x3,y3){return this.squareToQuadrilateral(x0,y0,x1,y1,x2,y2,x3,y3).buildAdjoint()};function DetectorResult(bits,points){this.bits=bits,this.points=points}function Detector(image){this.image=image,this.resultPointCallback=null,this.sizeOfBlackWhiteBlackRun=function(fromX,fromY,toX,toY){var steep=Math.abs(toY-fromY)>Math.abs(toX-fromX);if(steep){var temp=fromX;fromX=fromY,fromY=temp,temp=toX,toX=toY,toY=temp}var dx=Math.abs(toX-fromX),dy=Math.abs(toY-fromY),error=-dx>>1,ystep=fromY<toY?1:-1,xstep=fromX<toX?1:-1,state=0;for(var x=fromX,y=fromY;x!=toX;x+=xstep){var realX=steep?y:x,realY=steep?x:y;state==1?this.image[realX+realY*qrcode.width]&&state++:this.image[realX+realY*qrcode.width]||state++;if(state==3){var diffX=x-fromX,diffY=y-fromY;return Math.sqrt(diffX*diffX+diffY*diffY)}error+=dy;if(error>0){if(y==toY)break;y+=ystep,error-=dx}}var diffX2=toX-fromX,diffY2=toY-fromY;return Math.sqrt(diffX2*diffX2+diffY2*diffY2)},this.sizeOfBlackWhiteBlackRunBothWays=function(fromX,fromY,toX,toY){var result=this.sizeOfBlackWhiteBlackRun(fromX,fromY,toX,toY),scale=1,otherToX=fromX-(toX-fromX);otherToX<0?(scale=fromX/(fromX-otherToX),otherToX=0):otherToX>=qrcode.width&&(scale=(qrcode.width-1-fromX)/(otherToX-fromX),otherToX=qrcode.width-1);var otherToY=Math.floor(fromY-(toY-fromY)*scale);return scale=1,otherToY<0?(scale=fromY/(fromY-otherToY),otherToY=0):otherToY>=qrcode.height&&(scale=(qrcode.height-1-fromY)/(otherToY-fromY),otherToY=qrcode.height-1),otherToX=Math.floor(fromX+(otherToX-fromX)*scale),result+=this.sizeOfBlackWhiteBlackRun(fromX,fromY,otherToX,otherToY),result-1},this.calculateModuleSizeOneWay=function(pattern,otherPattern){var moduleSizeEst1=this.sizeOfBlackWhiteBlackRunBothWays(Math.floor(pattern.X),Math.floor(pattern.Y),Math.floor(otherPattern.X),Math.floor(otherPattern.Y)),moduleSizeEst2=this.sizeOfBlackWhiteBlackRunBothWays(Math.floor(otherPattern.X),Math.floor(otherPattern.Y),Math.floor(pattern.X),Math.floor(pattern.Y));return isNaN(moduleSizeEst1)?moduleSizeEst2/7:isNaN(moduleSizeEst2)?moduleSizeEst1/7:(moduleSizeEst1+moduleSizeEst2)/14},this.calculateModuleSize=function(topLeft,topRight,bottomLeft){return(this.calculateModuleSizeOneWay(topLeft,topRight)+this.calculateModuleSizeOneWay(topLeft,bottomLeft))/2},this.distance=function(pattern1,pattern2){return xDiff=pattern1.X-pattern2.X,yDiff=pattern1.Y-pattern2.Y,Math.sqrt(xDiff*xDiff+yDiff*yDiff)},this.computeDimension=function(topLeft,topRight,bottomLeft,moduleSize){var tltrCentersDimension=Math.round(this.distance(topLeft,topRight)/moduleSize),tlblCentersDimension=Math.round(this.distance(topLeft,bottomLeft)/moduleSize),dimension=(tltrCentersDimension+tlblCentersDimension>>1)+7;switch(dimension&3){case 0:dimension++;break;case 2:dimension--;break;case 3:throw"Error"}return dimension},this.findAlignmentInRegion=function(overallEstModuleSize,estAlignmentX,estAlignmentY,allowanceFactor){var allowance=Math.floor(allowanceFactor*overallEstModuleSize),alignmentAreaLeftX=Math.max(0,estAlignmentX-allowance),alignmentAreaRightX=Math.min(qrcode.width-1,estAlignmentX+allowance);if(alignmentAreaRightX-alignmentAreaLeftX<overallEstModuleSize*3)throw"Error";var alignmentAreaTopY=Math.max(0,estAlignmentY-allowance),alignmentAreaBottomY=Math.min(qrcode.height-1,estAlignmentY+allowance),alignmentFinder=new AlignmentPatternFinder(this.image,alignmentAreaLeftX,alignmentAreaTopY,alignmentAreaRightX-alignmentAreaLeftX,alignmentAreaBottomY-alignmentAreaTopY,overallEstModuleSize,this.resultPointCallback);return alignmentFinder.find()},this.createTransform=function(topLeft,topRight,bottomLeft,alignmentPattern,dimension){var dimMinusThree=dimension-3.5,bottomRightX,bottomRightY,sourceBottomRightX,sourceBottomRightY;alignmentPattern!=null?(bottomRightX=alignmentPattern.X,bottomRightY=alignmentPattern.Y,sourceBottomRightX=sourceBottomRightY=dimMinusThree-3):(bottomRightX=topRight.X-topLeft.X+bottomLeft.X,bottomRightY=topRight.Y-topLeft.Y+bottomLeft.Y,sourceBottomRightX=sourceBottomRightY=dimMinusThree);var transform=PerspectiveTransform.quadrilateralToQuadrilateral(3.5,3.5,dimMinusThree,3.5,sourceBottomRightX,sourceBottomRightY,3.5,dimMinusThree,topLeft.X,topLeft.Y,topRight.X,topRight.Y,bottomRightX,bottomRightY,bottomLeft.X,bottomLeft.Y);return transform},this.sampleGrid=function(image,transform,dimension){var sampler=GridSampler;return sampler.sampleGrid3(image,dimension,transform)},this.processFinderPatternInfo=function(info){var topLeft=info.TopLeft,topRight=info.TopRight,bottomLeft=info.BottomLeft,moduleSize=this.calculateModuleSize(topLeft,topRight,bottomLeft);if(moduleSize<1)throw"Error";var dimension=this.computeDimension(topLeft,topRight,bottomLeft,moduleSize),provisionalVersion=Version.getProvisionalVersionForDimension(dimension),modulesBetweenFPCenters=provisionalVersion.DimensionForVersion-7,alignmentPattern=null;if(provisionalVersion.AlignmentPatternCenters.length>0){var bottomRightX=topRight.X-topLeft.X+bottomLeft.X,bottomRightY=topRight.Y-topLeft.Y+bottomLeft.Y,correctionToTopLeft=1-3/modulesBetweenFPCenters,estAlignmentX=Math.floor(topLeft.X+correctionToTopLeft*(bottomRightX-topLeft.X)),estAlignmentY=Math.floor(topLeft.Y+correctionToTopLeft*(bottomRightY-topLeft.Y));for(var i=4;i<=16;i<<=1){alignmentPattern=this.findAlignmentInRegion(moduleSize,estAlignmentX,estAlignmentY,i);break}}var transform=this.createTransform(topLeft,topRight,bottomLeft,alignmentPattern,dimension),bits=this.sampleGrid(this.image,transform,dimension),points;return alignmentPattern==null?points=new Array(bottomLeft,topLeft,topRight):points=new Array(bottomLeft,topLeft,topRight,alignmentPattern),new DetectorResult(bits,points)},this.detect=function(){var info=(new FinderPatternFinder).findFinderPattern(this.image);return this.processFinderPatternInfo(info)}}var FORMAT_INFO_MASK_QR=21522,FORMAT_INFO_DECODE_LOOKUP=new Array(new Array(21522,0),new Array(20773,1),new Array(24188,2),new Array(23371,3),new Array(17913,4),new Array(16590,5),new Array(20375,6),new Array(19104,7),new Array(30660,8),new Array(29427,9),new Array(32170,10),new Array(30877,11),new Array(26159,12),new Array(25368,13),new Array(27713,14),new Array(26998,15),new Array(5769,16),new Array(5054,17),new Array(7399,18),new Array(6608,19),new Array(1890,20),new Array(597,21),new Array(3340,22),new Array(2107,23),new Array(13663,24),new Array(12392,25),new Array(16177,26),new Array(14854,27),new Array(9396,28),new Array(8579,29),new Array(11994,30),new Array(11245,31)),BITS_SET_IN_HALF_BYTE=new Array(0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4);function FormatInformation(formatInfo){this.errorCorrectionLevel=ErrorCorrectionLevel.forBits(formatInfo>>3&3),this.dataMask=formatInfo&7,this.__defineGetter__("ErrorCorrectionLevel",function(){return this.errorCorrectionLevel}),this.__defineGetter__("DataMask",function(){return this.dataMask}),this.GetHashCode=function(){return this.errorCorrectionLevel.ordinal()<<3|dataMask},this.Equals=function(o){var other=o;return this.errorCorrectionLevel==other.errorCorrectionLevel&&this.dataMask==other.dataMask}}FormatInformation.numBitsDiffering=function(a,b){return a^=b,BITS_SET_IN_HALF_BYTE[a&15]+BITS_SET_IN_HALF_BYTE[URShift(a,4)&15]+BITS_SET_IN_HALF_BYTE[URShift(a,8)&15]+BITS_SET_IN_HALF_BYTE[URShift(a,12)&15]+BITS_SET_IN_HALF_BYTE[URShift(a,16)&15]+BITS_SET_IN_HALF_BYTE[URShift(a,20)&15]+BITS_SET_IN_HALF_BYTE[URShift(a,24)&15]+BITS_SET_IN_HALF_BYTE[URShift(a,28)&15]},FormatInformation.decodeFormatInformation=function(maskedFormatInfo){var formatInfo=FormatInformation.doDecodeFormatInformation(maskedFormatInfo);return formatInfo!=null?formatInfo:FormatInformation.doDecodeFormatInformation(maskedFormatInfo^FORMAT_INFO_MASK_QR)},FormatInformation.doDecodeFormatInformation=function(maskedFormatInfo){var bestDifference=4294967295,bestFormatInfo=0;for(var i=0;i<FORMAT_INFO_DECODE_LOOKUP.length;i++){var decodeInfo=FORMAT_INFO_DECODE_LOOKUP[i],targetInfo=decodeInfo[0];if(targetInfo==maskedFormatInfo)return new FormatInformation(decodeInfo[1]);var bitsDifference=this.numBitsDiffering(maskedFormatInfo,targetInfo);bitsDifference<bestDifference&&(bestFormatInfo=decodeInfo[1],bestDifference=bitsDifference)}return bestDifference<=3?new FormatInformation(bestFormatInfo):null};function ErrorCorrectionLevel(ordinal,bits,name){this.ordinal_Renamed_Field=ordinal,this.bits=bits,this.name=name,this.__defineGetter__("Bits",function(){return this.bits}),this.__defineGetter__("Name",function(){return this.name}),this.ordinal=function(){return this.ordinal_Renamed_Field}}ErrorCorrectionLevel.forBits=function(bits){if(bits<0||bits>=FOR_BITS.Length)throw"ArgumentException";return FOR_BITS[bits]};var L=new ErrorCorrectionLevel(0,1,"L"),M=new ErrorCorrectionLevel(1,0,"M"),Q=new ErrorCorrectionLevel(2,3,"Q"),H=new ErrorCorrectionLevel(3,2,"H"),FOR_BITS=new Array(M,L,H,Q);function BitMatrix(width,height){height||(height=width);if(width<1||height<1)throw"Both dimensions must be greater than 0";this.width=width,this.height=height;var rowSize=width>>5;(width&31)!=0&&rowSize++,this.rowSize=rowSize,this.bits=new Array(rowSize*height);for(var i=0;i<this.bits.length;i++)this.bits[i]=0;this.__defineGetter__("Width",function(){return this.width}),this.__defineGetter__("Height",function(){return this.height}),this.__defineGetter__("Dimension",function(){if(this.width!=this.height)throw"Can't call getDimension() on a non-square matrix";return this.width}),this.get_Renamed=function(x,y){var offset=y*this.rowSize+(x>>5);return(URShift(this.bits[offset],x&31)&1)!=0},this.set_Renamed=function(x,y){var offset=y*this.rowSize+(x>>5);this.bits[offset]|=1<<(x&31)},this.flip=function(x,y){var offset=y*this.rowSize+(x>>5);this.bits[offset]^=1<<(x&31)},this.clear=function(){var max=this.bits.length;for(var i=0;i<max;i++)this.bits[i]=0},this.setRegion=function(left,top,width,height){if(top<0||left<0)throw"Left and top must be nonnegative";if(height<1||width<1)throw"Height and width must be at least 1";var right=left+width,bottom=top+height;if(bottom>this.height||right>this.width)throw"The region must fit inside the matrix";for(var y=top;y<bottom;y++){var offset=y*this.rowSize;for(var x=left;x<right;x++)this.bits[offset+(x>>5)]|=1<<(x&31)}}}function DataBlock(numDataCodewords,codewords){this.numDataCodewords=numDataCodewords,this.codewords=codewords,this.__defineGetter__("NumDataCodewords",function(){return this.numDataCodewords}),this.__defineGetter__("Codewords",function(){return this.codewords})}DataBlock.getDataBlocks=function(rawCodewords,version,ecLevel){if(rawCodewords.length!=version.TotalCodewords)throw"ArgumentException";var ecBlocks=version.getECBlocksForLevel(ecLevel),totalBlocks=0,ecBlockArray=ecBlocks.getECBlocks();for(var i=0;i<ecBlockArray.length;i++)totalBlocks+=ecBlockArray[i].Count;var result=new Array(totalBlocks),numResultBlocks=0;for(var j=0;j<ecBlockArray.length;j++){var ecBlock=ecBlockArray[j];for(var i=0;i<ecBlock.Count;i++){var numDataCodewords=ecBlock.DataCodewords,numBlockCodewords=ecBlocks.ECCodewordsPerBlock+numDataCodewords;result[numResultBlocks++]=new DataBlock(numDataCodewords,new Array(numBlockCodewords))}}var shorterBlocksTotalCodewords=result[0].codewords.length,longerBlocksStartAt=result.length-1;while(longerBlocksStartAt>=0){var numCodewords=result[longerBlocksStartAt].codewords.length;if(numCodewords==shorterBlocksTotalCodewords)break;longerBlocksStartAt--}longerBlocksStartAt++;var shorterBlocksNumDataCodewords=shorterBlocksTotalCodewords-ecBlocks.ECCodewordsPerBlock,rawCodewordsOffset=0;for(var i=0;i<shorterBlocksNumDataCodewords;i++)for(var j=0;j<numResultBlocks;j++)result[j].codewords[i]=rawCodewords[rawCodewordsOffset++];for(var j=longerBlocksStartAt;j<numResultBlocks;j++)result[j].codewords[shorterBlocksNumDataCodewords]=rawCodewords[rawCodewordsOffset++];var max=result[0].codewords.length;for(var i=shorterBlocksNumDataCodewords;i<max;i++)for(var j=0;j<numResultBlocks;j++){var iOffset=j<longerBlocksStartAt?i:i+1;result[j].codewords[iOffset]=rawCodewords[rawCodewordsOffset++]}return result};function BitMatrixParser(bitMatrix){var dimension=bitMatrix.Dimension;if(dimension<21||(dimension&3)!=1)throw"Error BitMatrixParser";this.bitMatrix=bitMatrix,this.parsedVersion=null,this.parsedFormatInfo=null,this.copyBit=function(i,j,versionBits){return this.bitMatrix.get_Renamed(i,j)?versionBits<<1|1:versionBits<<1},this.readFormatInformation=function(){if(this.parsedFormatInfo!=null)return this.parsedFormatInfo;var formatInfoBits=0;for(var i=0;i<6;i++)formatInfoBits=this.copyBit(i,8,formatInfoBits);formatInfoBits=this.copyBit(7,8,formatInfoBits),formatInfoBits=this.copyBit(8,8,formatInfoBits),formatInfoBits=this.copyBit(8,7,formatInfoBits);for(var j=5;j>=0;j--)formatInfoBits=this.copyBit(8,j,formatInfoBits);this.parsedFormatInfo=FormatInformation.decodeFormatInformation(formatInfoBits);if(this.parsedFormatInfo!=null)return this.parsedFormatInfo;var dimension=this.bitMatrix.Dimension;formatInfoBits=0;var iMin=dimension-8;for(var i=dimension-1;i>=iMin;i--)formatInfoBits=this.copyBit(i,8,formatInfoBits);for(var j=dimension-7;j<dimension;j++)formatInfoBits=this.copyBit(8,j,formatInfoBits);this.parsedFormatInfo=FormatInformation.decodeFormatInformation(formatInfoBits);if(this.parsedFormatInfo!=null)return this.parsedFormatInfo;throw"Error readFormatInformation"},this.readVersion=function(){if(this.parsedVersion!=null)return this.parsedVersion;var dimension=this.bitMatrix.Dimension,provisionalVersion=dimension-17>>2;if(provisionalVersion<=6)return Version.getVersionForNumber(provisionalVersion);var versionBits=0,ijMin=dimension-11;for(var j=5;j>=0;j--)for(var i=dimension-9;i>=ijMin;i--)versionBits=this.copyBit(i,j,versionBits);this.parsedVersion=Version.decodeVersionInformation(versionBits);if(this.parsedVersion!=null&&this.parsedVersion.DimensionForVersion==dimension)return this.parsedVersion;versionBits=0;for(var i=5;i>=0;i--)for(var j=dimension-9;j>=ijMin;j--)versionBits=this.copyBit(i,j,versionBits);this.parsedVersion=Version.decodeVersionInformation(versionBits);if(this.parsedVersion!=null&&this.parsedVersion.DimensionForVersion==dimension)return this.parsedVersion;throw"Error readVersion"},this.readCodewords=function(){var formatInfo=this.readFormatInformation(),version=this.readVersion(),dataMask=DataMask.forReference(formatInfo.DataMask),dimension=this.bitMatrix.Dimension;dataMask.unmaskBitMatrix(this.bitMatrix,dimension);var functionPattern=version.buildFunctionPattern(),readingUp=!0,result=new Array(version.TotalCodewords),resultOffset=0,currentByte=0,bitsRead=0;for(var j=dimension-1;j>0;j-=2){j==6&&j--;for(var count=0;count<dimension;count++){var i=readingUp?dimension-1-count:count;for(var col=0;col<2;col++)functionPattern.get_Renamed(j-col,i)||(bitsRead++,currentByte<<=1,this.bitMatrix.get_Renamed(j-col,i)&&(currentByte|=1),bitsRead==8&&(result[resultOffset++]=currentByte,bitsRead=0,currentByte=0))}readingUp^=!0}if(resultOffset!=version.TotalCodewords)throw"Error readCodewords";return result}}DataMask={},DataMask.forReference=function(reference){if(reference<0||reference>7)throw"System.ArgumentException";return DataMask.DATA_MASKS[reference]};function DataMask000(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){return(i+j&1)==0}}function DataMask001(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<
dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){return(i&1)==0}}function DataMask010(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){return j%3==0}}function DataMask011(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){return(i+j)%3==0}}function DataMask100(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){return(URShift(i,1)+j/3&1)==0}}function DataMask101(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){var temp=i*j;return(temp&1)+temp%3==0}}function DataMask110(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){var temp=i*j;return((temp&1)+temp%3&1)==0}}function DataMask111(){this.unmaskBitMatrix=function(bits,dimension){for(var i=0;i<dimension;i++)for(var j=0;j<dimension;j++)this.isMasked(i,j)&&bits.flip(j,i)},this.isMasked=function(i,j){return((i+j&1)+i*j%3&1)==0}}DataMask.DATA_MASKS=new Array(new DataMask000,new DataMask001,new DataMask010,new DataMask011,new DataMask100,new DataMask101,new DataMask110,new DataMask111);function ReedSolomonDecoder(field){this.field=field,this.decode=function(received,twoS){var poly=new GF256Poly(this.field,received),syndromeCoefficients=new Array(twoS);for(var i=0;i<syndromeCoefficients.length;i++)syndromeCoefficients[i]=0;var dataMatrix=!1,noError=!0;for(var i=0;i<twoS;i++){var eval=poly.evaluateAt(this.field.exp(dataMatrix?i+1:i));syndromeCoefficients[syndromeCoefficients.length-1-i]=eval,eval!=0&&(noError=!1)}if(noError)return;var syndrome=new GF256Poly(this.field,syndromeCoefficients),sigmaOmega=this.runEuclideanAlgorithm(this.field.buildMonomial(twoS,1),syndrome,twoS),sigma=sigmaOmega[0],omega=sigmaOmega[1],errorLocations=this.findErrorLocations(sigma),errorMagnitudes=this.findErrorMagnitudes(omega,errorLocations,dataMatrix);for(var i=0;i<errorLocations.length;i++){var position=received.length-1-this.field.log(errorLocations[i]);if(position<0)throw"ReedSolomonException Bad error location";received[position]=GF256.addOrSubtract(received[position],errorMagnitudes[i])}},this.runEuclideanAlgorithm=function(a,b,R){if(a.Degree<b.Degree){var temp=a;a=b,b=temp}var rLast=a,r=b,sLast=this.field.One,s=this.field.Zero,tLast=this.field.Zero,t=this.field.One;while(r.Degree>=Math.floor(R/2)){var rLastLast=rLast,sLastLast=sLast,tLastLast=tLast;rLast=r,sLast=s,tLast=t;if(rLast.Zero)throw"r_{i-1} was zero";r=rLastLast;var q=this.field.Zero,denominatorLeadingTerm=rLast.getCoefficient(rLast.Degree),dltInverse=this.field.inverse(denominatorLeadingTerm);while(r.Degree>=rLast.Degree&&!r.Zero){var degreeDiff=r.Degree-rLast.Degree,scale=this.field.multiply(r.getCoefficient(r.Degree),dltInverse);q=q.addOrSubtract(this.field.buildMonomial(degreeDiff,scale)),r=r.addOrSubtract(rLast.multiplyByMonomial(degreeDiff,scale))}s=q.multiply1(sLast).addOrSubtract(sLastLast),t=q.multiply1(tLast).addOrSubtract(tLastLast)}var sigmaTildeAtZero=t.getCoefficient(0);if(sigmaTildeAtZero==0)throw"ReedSolomonException sigmaTilde(0) was zero";var inverse=this.field.inverse(sigmaTildeAtZero),sigma=t.multiply2(inverse),omega=r.multiply2(inverse);return new Array(sigma,omega)},this.findErrorLocations=function(errorLocator){var numErrors=errorLocator.Degree;if(numErrors==1)return new Array(errorLocator.getCoefficient(1));var result=new Array(numErrors),e=0;for(var i=1;i<256&&e<numErrors;i++)errorLocator.evaluateAt(i)==0&&(result[e]=this.field.inverse(i),e++);if(e!=numErrors)throw"Error locator degree does not match number of roots";return result},this.findErrorMagnitudes=function(errorEvaluator,errorLocations,dataMatrix){var s=errorLocations.length,result=new Array(s);for(var i=0;i<s;i++){var xiInverse=this.field.inverse(errorLocations[i]),denominator=1;for(var j=0;j<s;j++)i!=j&&(denominator=this.field.multiply(denominator,GF256.addOrSubtract(1,this.field.multiply(errorLocations[j],xiInverse))));result[i]=this.field.multiply(errorEvaluator.evaluateAt(xiInverse),this.field.inverse(denominator)),dataMatrix&&(result[i]=this.field.multiply(result[i],xiInverse))}return result}}function GF256Poly(field,coefficients){if(coefficients==null||coefficients.length==0)throw"System.ArgumentException";this.field=field;var coefficientsLength=coefficients.length;if(coefficientsLength>1&&coefficients[0]==0){var firstNonZero=1;while(firstNonZero<coefficientsLength&&coefficients[firstNonZero]==0)firstNonZero++;if(firstNonZero==coefficientsLength)this.coefficients=field.Zero.coefficients;else{this.coefficients=new Array(coefficientsLength-firstNonZero);for(var i=0;i<this.coefficients.length;i++)this.coefficients[i]=0;for(var ci=0;ci<this.coefficients.length;ci++)this.coefficients[ci]=coefficients[firstNonZero+ci]}}else this.coefficients=coefficients;this.__defineGetter__("Zero",function(){return this.coefficients[0]==0}),this.__defineGetter__("Degree",function(){return this.coefficients.length-1}),this.__defineGetter__("Coefficients",function(){return this.coefficients}),this.getCoefficient=function(degree){return this.coefficients[this.coefficients.length-1-degree]},this.evaluateAt=function(a){if(a==0)return this.getCoefficient(0);var size=this.coefficients.length;if(a==1){var result=0;for(var i=0;i<size;i++)result=GF256.addOrSubtract(result,this.coefficients[i]);return result}var result2=this.coefficients[0];for(var i=1;i<size;i++)result2=GF256.addOrSubtract(this.field.multiply(a,result2),this.coefficients[i]);return result2},this.addOrSubtract=function(other){if(this.field!=other.field)throw"GF256Polys do not have same GF256 field";if(this.Zero)return other;if(other.Zero)return this;var smallerCoefficients=this.coefficients,largerCoefficients=other.coefficients;if(smallerCoefficients.length>largerCoefficients.length){var temp=smallerCoefficients;smallerCoefficients=largerCoefficients,largerCoefficients=temp}var sumDiff=new Array(largerCoefficients.length),lengthDiff=largerCoefficients.length-smallerCoefficients.length;for(var ci=0;ci<lengthDiff;ci++)sumDiff[ci]=largerCoefficients[ci];for(var i=lengthDiff;i<largerCoefficients.length;i++)sumDiff[i]=GF256.addOrSubtract(smallerCoefficients[i-lengthDiff],largerCoefficients[i]);return new GF256Poly(field,sumDiff)},this.multiply1=function(other){if(this.field!=other.field)throw"GF256Polys do not have same GF256 field";if(this.Zero||other.Zero)return this.field.Zero;var aCoefficients=this.coefficients,aLength=aCoefficients.length,bCoefficients=other.coefficients,bLength=bCoefficients.length,product=new Array(aLength+bLength-1);for(var i=0;i<aLength;i++){var aCoeff=aCoefficients[i];for(var j=0;j<bLength;j++)product[i+j]=GF256.addOrSubtract(product[i+j],this.field.multiply(aCoeff,bCoefficients[j]))}return new GF256Poly(this.field,product)},this.multiply2=function(scalar){if(scalar==0)return this.field.Zero;if(scalar==1)return this;var size=this.coefficients.length,product=new Array(size);for(var i=0;i<size;i++)product[i]=this.field.multiply(this.coefficients[i],scalar);return new GF256Poly(this.field,product)},this.multiplyByMonomial=function(degree,coefficient){if(degree<0)throw"System.ArgumentException";if(coefficient==0)return this.field.Zero;var size=this.coefficients.length,product=new Array(size+degree);for(var i=0;i<product.length;i++)product[i]=0;for(var i=0;i<size;i++)product[i]=this.field.multiply(this.coefficients[i],coefficient);return new GF256Poly(this.field,product)},this.divide=function(other){if(this.field!=other.field)throw"GF256Polys do not have same GF256 field";if(other.Zero)throw"Divide by 0";var quotient=this.field.Zero,remainder=this,denominatorLeadingTerm=other.getCoefficient(other.Degree),inverseDenominatorLeadingTerm=this.field.inverse(denominatorLeadingTerm);while(remainder.Degree>=other.Degree&&!remainder.Zero){var degreeDifference=remainder.Degree-other.Degree,scale=this.field.multiply(remainder.getCoefficient(remainder.Degree),inverseDenominatorLeadingTerm),term=other.multiplyByMonomial(degreeDifference,scale),iterationQuotient=this.field.buildMonomial(degreeDifference,scale);quotient=quotient.addOrSubtract(iterationQuotient),remainder=remainder.addOrSubtract(term)}return new Array(quotient,remainder)}}function GF256(primitive){this.expTable=new Array(256),this.logTable=new Array(256);var x=1;for(var i=0;i<256;i++)this.expTable[i]=x,x<<=1,x>=256&&(x^=primitive);for(var i=0;i<255;i++)this.logTable[this.expTable[i]]=i;var at0=new Array(1);at0[0]=0,this.zero=new GF256Poly(this,new Array(at0));var at1=new Array(1);at1[0]=1,this.one=new GF256Poly(this,new Array(at1)),this.__defineGetter__("Zero",function(){return this.zero}),this.__defineGetter__("One",function(){return this.one}),this.buildMonomial=function(degree,coefficient){if(degree<0)throw"System.ArgumentException";if(coefficient==0)return zero;var coefficients=new Array(degree+1);for(var i=0;i<coefficients.length;i++)coefficients[i]=0;return coefficients[0]=coefficient,new GF256Poly(this,coefficients)},this.exp=function(a){return this.expTable[a]},this.log=function(a){if(a==0)throw"System.ArgumentException";return this.logTable[a]},this.inverse=function(a){if(a==0)throw"System.ArithmeticException";return this.expTable[255-this.logTable[a]]},this.multiply=function(a,b){return a==0||b==0?0:a==1?b:b==1?a:this.expTable[(this.logTable[a]+this.logTable[b])%255]}}GF256.QR_CODE_FIELD=new GF256(285),GF256.DATA_MATRIX_FIELD=new GF256(301),GF256.addOrSubtract=function(a,b){return a^b},Decoder={},Decoder.rsDecoder=new ReedSolomonDecoder(GF256.QR_CODE_FIELD),Decoder.correctErrors=function(codewordBytes,numDataCodewords){var numCodewords=codewordBytes.length,codewordsInts=new Array(numCodewords);for(var i=0;i<numCodewords;i++)codewordsInts[i]=codewordBytes[i]&255;var numECCodewords=codewordBytes.length-numDataCodewords;try{Decoder.rsDecoder.decode(codewordsInts,numECCodewords)}catch(rse){throw rse}for(var i=0;i<numDataCodewords;i++)codewordBytes[i]=codewordsInts[i]},Decoder.decode=function(bits){var parser=new BitMatrixParser(bits),version=parser.readVersion(),ecLevel=parser.readFormatInformation().ErrorCorrectionLevel,codewords=parser.readCodewords(),dataBlocks=DataBlock.getDataBlocks(codewords,version,ecLevel),totalBytes=0;for(var i=0;i<dataBlocks.Length;i++)totalBytes+=dataBlocks[i].NumDataCodewords;var resultBytes=new Array(totalBytes),resultOffset=0;for(var j=0;j<dataBlocks.length;j++){var dataBlock=dataBlocks[j],codewordBytes=dataBlock.Codewords,numDataCodewords=dataBlock.NumDataCodewords;Decoder.correctErrors(codewordBytes,numDataCodewords);for(var i=0;i<numDataCodewords;i++)resultBytes[resultOffset++]=codewordBytes[i]}var reader=new QRCodeDataBlockReader(resultBytes,version.VersionNumber,ecLevel.Bits);return reader},qrcode={},qrcode.imagedata=null,qrcode.width=0,qrcode.height=0,qrcode.qrCodeSymbol=null,qrcode.sizeOfDataLengthInfo=[[10,9,8,8],[12,11,16,10],[14,13,16,12]],qrcode.callback=null,qrcode.decode=function(src){if(arguments.length==0){var canvas_qr=document.getElementById("qr-canvas"),context=canvas_qr.getContext("2d");return qrcode.width=canvas_qr.width,qrcode.height=canvas_qr.height,qrcode.imagedata=context.getImageData(0,0,qrcode.width,qrcode.height),qrcode.result=qrcode.process(context),qrcode.callback!=null&&qrcode.callback(qrcode.result),qrcode.result}var image=new Image;image.onload=function(){var canvas_qr=document.createElement("canvas"),context=canvas_qr.getContext("2d"),canvas_out=document.getElementById("out-canvas");if(canvas_out!=null){var outctx=canvas_out.getContext("2d");outctx.clearRect(0,0,320,240),outctx.drawImage(image,0,0,320,240)}canvas_qr.width=image.width,canvas_qr.height=image.height,context.drawImage(image,0,0),qrcode.width=image.width,qrcode.height=image.height;try{qrcode.imagedata=context.getImageData(0,0,image.width,image.height)}catch(e){qrcode.result=null,qrcode.callback!=null&&qrcode.callback(qrcode.result);return}try{qrcode.result=qrcode.process(context)}catch(e){console.log(e),qrcode.result=null}qrcode.callback!=null&&qrcode.callback(qrcode.result)},image.src=src},qrcode.process=function(ctx){var start=(new Date).getTime(),image=qrcode.grayScaleToBitmap(qrcode.grayscale()),detector=new Detector(image),qRCodeMatrix=detector.detect();ctx.putImageData(qrcode.imagedata,0,0);var reader=Decoder.decode(qRCodeMatrix.bits),data=reader.DataByte,str="";for(var i=0;i<data.length;i++)for(var j=0;j<data[i].length;j++)str+=String.fromCharCode(data[i][j]);var end=(new Date).getTime(),time=end-start;return console.log(time),str},qrcode.getPixel=function(x,y){if(qrcode.width<x)throw"point error";if(qrcode.height<y)throw"point error";return point=x*4+y*qrcode.width*4,p=(qrcode.imagedata.data[point]*30+qrcode.imagedata.data[point+1]*59+qrcode.imagedata.data[point+2]*11)/100,p},qrcode.binarize=function(th){var ret=new Array(qrcode.width*qrcode.height);for(var y=0;y<qrcode.height;y++)for(var x=0;x<qrcode.width;x++){var gray=qrcode.getPixel(x,y);ret[x+y*qrcode.width]=gray<=th?!0:!1}return ret},qrcode.getMiddleBrightnessPerArea=function(image){var numSqrtArea=4,areaWidth=Math.floor(qrcode.width/numSqrtArea),areaHeight=Math.floor(qrcode.height/numSqrtArea),minmax=new Array(numSqrtArea);for(var i=0;i<numSqrtArea;i++){minmax[i]=new Array(numSqrtArea);for(var i2=0;i2<numSqrtArea;i2++)minmax[i][i2]=new Array(0,0)}for(var ay=0;ay<numSqrtArea;ay++)for(var ax=0;ax<numSqrtArea;ax++){minmax[ax][ay][0]=255;for(var dy=0;dy<areaHeight;dy++)for(var dx=0;dx<areaWidth;dx++){var target=image[areaWidth*ax+dx+(areaHeight*ay+dy)*qrcode.width];target<minmax[ax][ay][0]&&(minmax[ax][ay][0]=target),target>minmax[ax][ay][1]&&(minmax[ax][ay][1]=target)}}var middle=new Array(numSqrtArea);for(var i3=0;i3<numSqrtArea;i3++)middle[i3]=new Array(numSqrtArea);for(var ay=0;ay<numSqrtArea;ay++)for(var ax=0;ax<numSqrtArea;ax++)middle[ax][ay]=Math.floor((minmax[ax][ay][0]+minmax[ax][ay][1])/2);return middle},qrcode.grayScaleToBitmap=function(grayScale){var middle=qrcode.getMiddleBrightnessPerArea(grayScale),sqrtNumArea=middle.length,areaWidth=Math.floor(qrcode.width/sqrtNumArea),areaHeight=Math.floor(qrcode.height/sqrtNumArea),bitmap=new Array(qrcode.height*qrcode.width);for(var ay=0;ay<sqrtNumArea;ay++)for(var ax=0;ax<sqrtNumArea;ax++)for(var dy=0;dy<areaHeight;dy++)for(var dx=0;dx<areaWidth;dx++)bitmap[areaWidth*ax+dx+(areaHeight*ay+dy)*qrcode.width]=grayScale[areaWidth*ax+dx+(areaHeight*ay+dy)*qrcode.width]<middle[ax][ay]?!0:!1;return bitmap},qrcode.grayscale=function(){var ret=new Array(qrcode.width*qrcode.height);for(var y=0;y<qrcode.height;y++)for(var x=0;x<qrcode.width;x++){var gray=qrcode.getPixel(x,y);ret[x+y*qrcode.width]=gray}return ret};function URShift(number,bits){return number>=0?number>>bits:(number>>bits)+(2<<~bits)}Array.prototype.remove=function(from,to){var rest=this.slice((to||from)+1||this.length);return this.length=from<0?this.length+from:from,this.push.apply(this,rest)};var MIN_SKIP=3,MAX_MODULES=57,INTEGER_MATH_SHIFT=8,CENTER_QUORUM=2;qrcode.orderBestPatterns=function(patterns){function distance(pattern1,pattern2){return xDiff=pattern1.X-pattern2.X,yDiff=pattern1.Y-pattern2.Y,Math.sqrt(xDiff*xDiff+yDiff*yDiff)}function crossProductZ(pointA,pointB,pointC){var bX=pointB.x,bY=pointB.y;return(pointC.x-bX)*(pointA.y-bY)-(pointC.y-bY)*(pointA.x-bX)}var zeroOneDistance=distance(patterns[0],patterns[1]),oneTwoDistance=distance(patterns[1],patterns[2]),zeroTwoDistance=distance(patterns[0],patterns[2]),pointA,pointB,pointC;oneTwoDistance>=zeroOneDistance&&oneTwoDistance>=zeroTwoDistance?(pointB=patterns[0],pointA=patterns[1],pointC=patterns[2]):zeroTwoDistance>=oneTwoDistance&&zeroTwoDistance>=zeroOneDistance?(pointB=patterns[1],pointA=patterns[0],pointC=patterns[2]):(pointB=patterns[2],pointA=patterns[0],pointC=patterns[1]);if(crossProductZ(pointA,pointB,pointC)<0){var temp=pointA;pointA=pointC,pointC=temp}patterns[0]=pointA,patterns[1]=pointB,patterns[2]=pointC};function FinderPattern(posX,posY,estimatedModuleSize){this.x=posX,this.y=posY,this.count=1,this.estimatedModuleSize=estimatedModuleSize,this.__defineGetter__("EstimatedModuleSize",function(){return this.estimatedModuleSize}),this.__defineGetter__("Count",function(){return this.count}),this.__defineGetter__("X",function(){return this.x}),this.__defineGetter__("Y",function(){return this.y}),this.incrementCount=function(){this.count++},this.aboutEquals=function(moduleSize,i,j){if(Math.abs(i-this.y)<=moduleSize&&Math.abs(j-this.x)<=moduleSize){var moduleSizeDiff=Math.abs(moduleSize-this.estimatedModuleSize);return moduleSizeDiff<=1||moduleSizeDiff/this.estimatedModuleSize<=1}return!1}}function FinderPatternInfo(patternCenters){this.bottomLeft=patternCenters[0],this.topLeft=patternCenters[1],this.topRight=patternCenters[2],this.__defineGetter__("BottomLeft",function(){return this.bottomLeft}),this.__defineGetter__("TopLeft",function(){return this.topLeft}),this.__defineGetter__("TopRight",function(){return this.topRight})}function FinderPatternFinder(){this.image=null,this.possibleCenters=[],this.hasSkipped=!1,this.crossCheckStateCount=new Array(0,0,0,0,0),this.resultPointCallback=null,this.__defineGetter__("CrossCheckStateCount",function(){return this.crossCheckStateCount[0]=0,this.crossCheckStateCount[1]=0,this.crossCheckStateCount[2]=0,this.crossCheckStateCount[3]=0,this.crossCheckStateCount[4]=0,this.crossCheckStateCount}),this.foundPatternCross=function(stateCount){var totalModuleSize=0;for(var i=0;i<5;i++){var count=stateCount[i];if(count==0)return!1;totalModuleSize+=count}if(totalModuleSize<7)return!1;var moduleSize=Math.floor((totalModuleSize<<INTEGER_MATH_SHIFT)/7),maxVariance=Math.floor(moduleSize/2);return Math.abs(moduleSize-(stateCount[0]<<INTEGER_MATH_SHIFT))<maxVariance&&Math.abs(moduleSize-(stateCount[1]<<INTEGER_MATH_SHIFT))<maxVariance&&Math.abs(3*moduleSize-(stateCount[2]<<INTEGER_MATH_SHIFT))<3*maxVariance&&Math.abs(moduleSize-(stateCount[3]<<INTEGER_MATH_SHIFT))<maxVariance&&Math.abs(moduleSize-(stateCount[4]<<INTEGER_MATH_SHIFT))<maxVariance},this.centerFromEnd=function(stateCount,end){return end-stateCount[4]-stateCount[3]-stateCount[2]/2},this.crossCheckVertical=function(startI,centerJ,maxCount,originalStateCountTotal){var image=this.image,maxI=qrcode.height,stateCount=this.CrossCheckStateCount,i=startI;while(i>=0&&image[centerJ+i*qrcode.width])stateCount[2]++,i--;if(i<0)return NaN;while(i>=0&&!image[centerJ+i*qrcode.width]&&stateCount[1]<=maxCount)stateCount[1]++,i--;if(i<0||stateCount[1]>maxCount)return NaN;while(i>=0&&image[centerJ+i*qrcode.width]&&stateCount[0]<=maxCount)stateCount[0]++,i--;if(stateCount[0]>maxCount)return NaN;i=startI+1;while(i<maxI&&image[centerJ+i*qrcode.width])stateCount[2]++,i++;if(i==maxI)return NaN;while(i<maxI&&!image[centerJ+i*qrcode.width]&&stateCount[3]<maxCount)stateCount[3]++,i++;if(i==maxI||stateCount[3]>=maxCount)return NaN;while(i<maxI&&image[centerJ+i*qrcode.width]&&stateCount[4]<maxCount)stateCount[4]++,i++;if(stateCount[4]>=maxCount)return NaN;var stateCountTotal=stateCount[0]+stateCount[1]+stateCount[2]+stateCount[3]+stateCount[4];return 5*Math.abs(stateCountTotal-originalStateCountTotal)>=2*originalStateCountTotal?NaN:this.foundPatternCross(stateCount)?this.centerFromEnd(stateCount,i):NaN},this.crossCheckHorizontal=function(startJ,centerI,maxCount,originalStateCountTotal){var image=this.image,maxJ=qrcode.width,stateCount=this.CrossCheckStateCount,j=startJ;while(j>=0&&image[j+centerI*qrcode.width])stateCount[2]++,j--;if(j<0)return NaN;while(j>=0&&!image[j+centerI*qrcode.width]&&stateCount[1]<=maxCount)stateCount[1]++,j--;if(j<0||stateCount[1]>maxCount)return NaN;while(j>=0&&image[j+centerI*qrcode.width]&&stateCount[0]<=maxCount)stateCount[0]++,j--;if(stateCount[0]>maxCount)return NaN;j=startJ+1;while(j<maxJ&&image[j+centerI*qrcode.width])stateCount[2]++,j++;if(j==maxJ)return NaN;while(j<maxJ&&!image[j+centerI*qrcode.width]&&stateCount[3]<maxCount)stateCount[3]++,j++;if(j==maxJ||stateCount[3]>=maxCount)return NaN;while(j<maxJ&&image[j+centerI*qrcode.width]&&stateCount[4]<maxCount)stateCount[4]++,j++;if(stateCount[4]>=maxCount)return NaN;var stateCountTotal=stateCount[0]+stateCount[1]+stateCount[2]+stateCount[3]+stateCount[4];return 5*Math.abs(stateCountTotal-originalStateCountTotal)>=originalStateCountTotal?NaN:this.foundPatternCross(stateCount)?this.centerFromEnd(stateCount,j):NaN},this.handlePossibleCenter=function(stateCount,i,j){var stateCountTotal=stateCount[0]+stateCount[1]+stateCount[2]+stateCount[3]+stateCount[4],centerJ=this.centerFromEnd(stateCount,j),centerI=this.crossCheckVertical(i,Math.floor(centerJ),stateCount[2],stateCountTotal);if(!isNaN(centerI)){centerJ=this.crossCheckHorizontal(Math.floor(centerJ),Math.floor(centerI),stateCount[2],stateCountTotal);if(!isNaN(centerJ)){var estimatedModuleSize=stateCountTotal/7,found=!1,max=this.possibleCenters.length;for(var index=0;index<max;index++){var center=this.possibleCenters[index];if(center.aboutEquals(estimatedModuleSize,centerI,centerJ)){center.incrementCount(),found=!0;break}}if(!found){var point=new FinderPattern(centerJ,centerI,estimatedModuleSize);this.possibleCenters.push(point),this.resultPointCallback!=null&&this.resultPointCallback.foundPossibleResultPoint(point)}return!0}}return!1},this.selectBestPatterns=function(){var startSize=this.possibleCenters.length;if(startSize<3)throw"Couldn't find enough finder patterns";if(startSize>3){var totalModuleSize=0;for(var i=0;i<startSize;i++)totalModuleSize+=this.possibleCenters[i].EstimatedModuleSize;var average=totalModuleSize/startSize;for(var i=0;i<this.possibleCenters.length&&this.possibleCenters.length>3;i++){var pattern=this.possibleCenters[i];Math.abs(pattern.EstimatedModuleSize-average)>.2*average&&(this.possibleCenters.remove(i),i--)}}return!(this.possibleCenters.Count>3),new Array(this.possibleCenters[0],this.possibleCenters[1],this.possibleCenters[2])},this.findRowSkip=function(){var max=this.possibleCenters.length;if(max<=1)return 0;var firstConfirmedCenter=null;for(var i=0;i<max;i++){var center=this.possibleCenters[i];if(center.Count>=CENTER_QUORUM){if(firstConfirmedCenter!=null)return this.hasSkipped=!0,Math.floor((Math.abs(firstConfirmedCenter.X-center.X)-Math.abs(firstConfirmedCenter.Y-center.Y))/2);firstConfirmedCenter=center}}return 0},this.haveMultiplyConfirmedCenters=function(){var confirmedCount=0,totalModuleSize=0,max=this.possibleCenters.length;for(var i=0;i<max;i++){var pattern=this.possibleCenters[i];pattern.Count>=CENTER_QUORUM&&(confirmedCount++,totalModuleSize+=pattern.EstimatedModuleSize)}if(confirmedCount<3)return!1;var average=totalModuleSize/max,totalDeviation=0;for(var i=0;i<max;i++)pattern=this.possibleCenters[i],totalDeviation+=Math.abs(pattern.EstimatedModuleSize-average);return totalDeviation<=.05*totalModuleSize},this.findFinderPattern=function(image){var tryHarder=!1;this.image=image;var maxI=qrcode.height,maxJ=qrcode.width,iSkip=Math.floor(3*maxI/(4*MAX_MODULES));if(iSkip<MIN_SKIP||tryHarder)iSkip=MIN_SKIP;var done=!1,stateCount=new Array(5);for(var i=iSkip-1;i<maxI&&!done;i+=iSkip){stateCount[0]=0,stateCount[1]=0,stateCount[2]=0,stateCount[3]=0,stateCount[4]=0;var currentState=0;for(var j=0;j<maxJ;j++)if(image[j+i*qrcode.width])(currentState&1)==1&¤tState++,stateCount[currentState]++;else if((currentState&1)==0)if(currentState==4)if(this.foundPatternCross(stateCount)){var confirmed=this.handlePossibleCenter(stateCount,i,j);if(confirmed){iSkip=2;if(this.hasSkipped)done=this.haveMultiplyConfirmedCenters();else{var rowSkip=this.findRowSkip();rowSkip>stateCount[2]&&(i+=rowSkip-stateCount[2]-iSkip,j=maxJ-1)}}else{do j++;while(j<maxJ&&!image[j+i*qrcode.width]);j--}currentState=0,stateCount[0]=0,stateCount[1]=0,stateCount[2]=0,stateCount[3]=0,stateCount[4]=0}else stateCount[0]=stateCount[2],stateCount[1]=stateCount[3],stateCount[2]=stateCount[4],stateCount[3]=1,stateCount[4]=0,currentState=3;else stateCount[++currentState]++;else stateCount[currentState]++;if(this.foundPatternCross(stateCount)){var confirmed=this.handlePossibleCenter(stateCount,i,maxJ);confirmed&&(iSkip=stateCount[0],this.hasSkipped&&(done=haveMultiplyConfirmedCenters()))}}var patternInfo=this.selectBestPatterns();return qrcode.orderBestPatterns(patternInfo),new FinderPatternInfo(patternInfo)}}function AlignmentPattern(posX,posY,estimatedModuleSize){this.x=posX,this.y=posY,this.count=1,this.estimatedModuleSize=estimatedModuleSize,this.__defineGetter__("EstimatedModuleSize",function(){return this.estimatedModuleSize}),this.__defineGetter__("Count",function(){return this.count}),this.__defineGetter__("X",function(){return Math.floor(this.x)}),this.__defineGetter__("Y",function(){return Math.floor(this.y)}),this.incrementCount=function(){this.count++},this.aboutEquals=function(moduleSize,i,j){if(Math.abs(i-this.y)<=moduleSize&&Math.abs(j-this.x)<=moduleSize){var moduleSizeDiff=Math.abs(moduleSize-this.estimatedModuleSize);return moduleSizeDiff<=1||moduleSizeDiff/this.estimatedModuleSize<=1}return!1}}function AlignmentPatternFinder(image,startX,startY,width,height,moduleSize,resultPointCallback){this.image=image,this.possibleCenters=new Array,this.startX=startX,this.startY=startY,this.width=width,this.height=height,this.moduleSize=moduleSize,this.crossCheckStateCount=new Array(0,0,0),this.resultPointCallback=resultPointCallback,this.centerFromEnd=function(stateCount,end){return end-stateCount[2]-stateCount[1]/2},this.foundPatternCross=function(stateCount){var moduleSize=this.moduleSize,maxVariance=moduleSize/2;for(var i=0;i<3;i++)if(Math.abs(moduleSize-stateCount[i])>=maxVariance)return!1;return!0},this.crossCheckVertical=function(startI,centerJ,maxCount,originalStateCountTotal){var image=this.image,maxI=qrcode.height,stateCount=this.crossCheckStateCount;stateCount[0]=0,stateCount[1]=0,stateCount[2]=0;var i=startI;while(i>=0&&image[centerJ+i*qrcode.width]&&stateCount[1]<=maxCount)stateCount[1]++,i--;if(i<0||stateCount[1]>maxCount)return NaN;while(i>=0&&!image[centerJ+i*qrcode.width]&&stateCount[0]<=maxCount)stateCount[0]++,i--;if(stateCount[0]>maxCount)return NaN;i=startI+1;while(i<maxI&&image[centerJ+i*qrcode.width]&&stateCount[1]<=maxCount)stateCount[1]++,i++;if(i==maxI||stateCount[1]>maxCount)return NaN;while(i<maxI&&!image[centerJ+i*qrcode.width]&&stateCount[2]<=maxCount)stateCount[2]++,i++;if(stateCount[2]>maxCount)return NaN;var stateCountTotal=stateCount[0]+stateCount[1]+stateCount[2];return 5*Math.abs(stateCountTotal-originalStateCountTotal)>=2*originalStateCountTotal?NaN:this.foundPatternCross(stateCount)?this.centerFromEnd(stateCount,i):NaN},this.handlePossibleCenter=function(stateCount,i,j){var stateCountTotal=stateCount[0]+stateCount[1]+stateCount[2],centerJ=this.centerFromEnd(stateCount,j),centerI=this.crossCheckVertical(i,Math.floor(centerJ),2*stateCount[1],stateCountTotal);if(!isNaN(centerI)){var estimatedModuleSize=(stateCount[0]+stateCount[1]+stateCount[2])/3,max=this.possibleCenters.length;for(var index=0;index<max;index++){var center=this.possibleCenters[index];if(center.aboutEquals(estimatedModuleSize,centerI,centerJ))return new AlignmentPattern(centerJ,centerI,estimatedModuleSize)}var point=new AlignmentPattern(centerJ,centerI,estimatedModuleSize);this.possibleCenters.push(point),this.resultPointCallback!=null&&this.resultPointCallback.foundPossibleResultPoint(point)}return null},this.find=function(){var startX=this.startX,height=this.height,maxJ=startX+width,middleI=startY+(height>>1),stateCount=new Array(0,0,0);for(var iGen=0;iGen<height;iGen++){var i=middleI+((iGen&1)==0?iGen+1>>1:-(iGen+1>>1));stateCount[0]=0,stateCount[1]=0,stateCount[2]=0;var j=startX;while(j<maxJ&&!image[j+qrcode.width*i])j++;var currentState=0;while(j<maxJ){if(image[j+i*qrcode.width])if(currentState==1)stateCount[currentState]++;else if(currentState==2){if(this.foundPatternCross(stateCount)){var confirmed=this.handlePossibleCenter(stateCount,i,j);if(confirmed!=null)return confirmed}stateCount[0]=stateCount[2],stateCount[1]=1,stateCount[2]=0,currentState=1}else stateCount[++currentState]++;else currentState==1&¤tState++,stateCount[currentState]++;j++}if(this.foundPatternCross(stateCount)){var confirmed=this.handlePossibleCenter(stateCount,i,maxJ);if(confirmed!=null)return confirmed}}if(this.possibleCenters.length!=0)return this.possibleCenters[0];throw"Couldn't find enough alignment patterns"}}function QRCodeDataBlockReader(blocks,version,numErrorCorrectionCode){this.blockPointer=0,this.bitPointer=7,this.dataLength=0,this.blocks=blocks,this.numErrorCorrectionCode=numErrorCorrectionCode,version<=9?this.dataLengthMode=0:version>=10&&version<=26?this.dataLengthMode=1:version>=27&&version<=40&&(this.dataLengthMode=2),this.getNextBits=function(numBits){var bits=0;if(numBits<this.bitPointer+1){var mask=0;for(var i=0;i<numBits;i++)mask+=1<<i;return mask<<=this.bitPointer-numBits+1,bits=(this.blocks[this.blockPointer]&mask)>>this.bitPointer-numBits+1,this.bitPointer-=numBits,bits}if(numBits<this.bitPointer+1+8){var mask1=0;for(var i=0;i<this.bitPointer+1;i++)mask1+=1<<i;return bits=(this.blocks[this.blockPointer]&mask1)<<numBits-(this.bitPointer+1),this.blockPointer++,bits+=this.blocks[this.blockPointer]>>8-(numBits-(this.bitPointer+1)),this.bitPointer=this.bitPointer-numBits%8,this.bitPointer<0&&(this.bitPointer=8+this.bitPointer),bits}if(numBits<this.bitPointer+1+16){var mask1=0,mask3=0;for(var i=0;i<this.bitPointer+1;i++)mask1+=1<<i;var bitsFirstBlock=(this.blocks[this.blockPointer]&mask1)<<numBits-(this.bitPointer+1);this.blockPointer++;var bitsSecondBlock=this.blocks[this.blockPointer]<<numBits-(this.bitPointer+1+8);this.blockPointer++;for(var i=0;i<numBits-(this.bitPointer+1+8);i++)mask3+=1<<i;mask3<<=8-(numBits-(this.bitPointer+1+8));var bitsThirdBlock=(this.blocks[this.blockPointer]&mask3)>>8-(numBits-(this.bitPointer+1+8));return bits=bitsFirstBlock+bitsSecondBlock+bitsThirdBlock,this.bitPointer=this.bitPointer-(numBits-8)%8,this.bitPointer<0&&(this.bitPointer=8+this.bitPointer),bits}return 0},this.NextMode=function(){return this.blockPointer>this.blocks.length-this.numErrorCorrectionCode-2?0:this.getNextBits(4)},this.getDataLength=function(modeIndicator){var index=0;for(;;){if(modeIndicator>>index==1)break;index++}return this.getNextBits(qrcode.sizeOfDataLengthInfo[this.dataLengthMode][index])},this.getRomanAndFigureString=function(dataLength){var length=dataLength,intData=0,strData="",tableRomanAndFigure=new Array("0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"," ","$","%","*","+","-",".","/",":");do if(length>1){intData=this.getNextBits(11);var firstLetter=Math.floor(intData/45),secondLetter=intData%45;strData+=tableRomanAndFigure[firstLetter],strData+=tableRomanAndFigure[secondLetter],length-=2}else length==1&&(intData=this.getNextBits(6),strData+=tableRomanAndFigure[intData],length-=1);while(length>0);return strData},this.getFigureString=function(dataLength){var length=dataLength,intData=0,strData="";do length>=3?(intData=this.getNextBits(10),intData<100&&(strData+="0"),intData<10&&(strData+="0"),length-=3):length==2?(intData=this.getNextBits(7),intData<10&&(strData+="0"),length-=2):length==1&&(intData=this.getNextBits(4),length-=1),strData+=intData;while(length>0);return strData},this.get8bitByteArray=function(dataLength){var length=dataLength,intData=0,output=new Array;do intData=this.getNextBits(8),output.push(intData),length--;while(length>0);return output},this.getKanjiString=function(dataLength){var length=dataLength,intData=0,unicodeString="";do{intData=getNextBits(13);var lowerByte=intData%192,higherByte=intData/192,tempWord=(higherByte<<8)+lowerByte,shiftjisWord=0;tempWord+33088<=40956?shiftjisWord=tempWord+33088:shiftjisWord=tempWord+49472,unicodeString+=String.fromCharCode(shiftjisWord),length--}while(length>0);return unicodeString},this.__defineGetter__("DataByte",function(){var output=new Array,MODE_NUMBER=1,MODE_ROMAN_AND_NUMBER=2,MODE_8BIT_BYTE=4,MODE_KANJI=8;do{var mode=this.NextMode();if(mode==0){if(output.length>0)break;throw"Empty data block"}if(mode!=MODE_NUMBER&&mode!=MODE_ROMAN_AND_NUMBER&&mode!=MODE_8BIT_BYTE&&mode!=MODE_KANJI)throw"Invalid mode: "+mode+" in (block:"+this.blockPointer+" bit:"+this.bitPointer+")";dataLength=this.getDataLength(mode);if(dataLength<1)throw"Invalid data length: "+dataLength;switch(mode){case MODE_NUMBER:var temp_str=this.getFigureString(dataLength),ta=new
Array(temp_str.length);for(var j=0;j<temp_str.length;j++)ta[j]=temp_str.charCodeAt(j);output.push(ta);break;case MODE_ROMAN_AND_NUMBER:var temp_str=this.getRomanAndFigureString(dataLength),ta=new Array(temp_str.length);for(var j=0;j<temp_str.length;j++)ta[j]=temp_str.charCodeAt(j);output.push(ta);break;case MODE_8BIT_BYTE:var temp_sbyteArray3=this.get8bitByteArray(dataLength);output.push(temp_sbyteArray3);break;case MODE_KANJI:var temp_str=this.getKanjiString(dataLength);output.push(temp_str)}}while(!0);return output})};
</script>
<style>
/* Robotron 2084 font http://www.splintered.co.uk/experiments/113/ - converted with Font Squirrel */
@font-face { font-family: 'Robotron2084SmallRegular'; src: url('../fonts/robotron_2084_small.woff') format('woff'), url('../fonts/robotron_2084_small.ttf') format('truetype'); }
html, body { margin: 0; padding: 0; background: #eee; }
#container,
#container code { font: 32px/1 'Robotron2084SmallRegular', sans-serif; }
#container a,
#container a:link,
#container a:visited,
#container a:hover,
#container a:focus,
#container a:active { color: #fb2989; }
#container { width: 460px; margin:0; padding: 10px; margin: 0 auto; }
#container h1 { margin:0; padding:0; }
#container h1 img { display:block; margin:0; padding:0; }
#container video,
#container canvas { box-sizing: border-box; display: block; width:100%; border: 10px #26779d solid; background: #26779d; margin: 10px 0; padding: 0; }
#container canvas { border-color: #fb2989; background: #fb2989; } /* "found" visual cue */
#out { height: 25px; padding: 20px 10px 20px 60px; overflow: hidden; white-space: nowrap; background: url(../images/qry-passive.png) no-repeat center left;}
#out.happy { background-image: url(../images/qry-happy.png); }
#out.sad { background-image: url(../images/qry-sad.png); }
@-o-viewport {
width: 480px auto;
orientation: portrait; /* lock orientation - not implemented yet? */
resolution: device; /* set device-dpi - not implemented yet? */
}
@-ms-viewport {
width: 480px auto;
orientation: portrait; /* lock orientation - not implemented yet? */
resolution: device; /* set device-dpi - not implemented yet? */
}
/* some basic height restrictions for video/canvas for less tall devices */
@media (max-height: 800px),
(max-device-height: 800px) {
#container video,
#container canvas { max-height: 600px; }
}
@media (max-height: 600px),
(max-device-height: 600px) {
#container video,
#container canvas { max-height: 400px; }
}
@media (max-height: 400px),
(max-device-height: 400px) {
#container video,
#container canvas { max-height: 75px; }
}
</style>
<div id="container">
<h1><img src="https://raw.githubusercontent.com/github-adi/shinydemos/master/demos/qr-code/images/qry-happy.png" alt="QRY {curie} QR code reader"></h1>
<div>
<video id="sourcevid">
<p>This application requires an HTML5 <code><video></code> capable browser…</p>
</video>
</div>
<div id="out"></div>
</div>
</body>