前端html实现二维码识别

一、html代码

<!DOCTYPE html>
<html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1.0"><title>二维码识别测试</title><script src="jquery.min.js"></script><script src="reqrcode.js"></script>
</head><body><input type="file" id="newfile">
</body><script>var newfile = document.getElementById('newfile');var getObjectURL = function (file) {var url = null;if (window.createObjectURL != undefined) { // basicurl = window.createObjectURL(file);} else if (window.URL != undefined) { // mozilla(firefox)url = window.URL.createObjectURL(file);} else if (window.webkitURL != undefined) { // webkit or chromeurl = window.webkitURL.createObjectURL(file);}return url;}newfile.onchange = function () {console.log(getObjectURL(this.files[0]));// newfile[0]是通过input file上传的二维码图片文件qrcode.decode(getObjectURL(this.files[0]));qrcode.callback = function (imgMsg) {alert("二维码解析后内容：" + imgMsg)}}
</script></html>

二、 js文件

jquery.js请自行下载，资源太多了；

reqrcode.js：

var _aa={};_aa._ab=function(f,e){var d=qrcode.width;var b=qrcode.height;var c=true;for(var g=0;g<e.length&&c;g+=2){var a=Math.floor(e[g]);var h=Math.floor(e[g+1]);if(a<-1||a>d||h<-1||h>b){throw"Error._ab "}c=false;if(a==-1){e[g]=0;c=true}else{if(a==d){e[g]=d-1;c=true}}if(h==-1){e[g+1]=0;c=true}else{if(h==b){e[g+1]=b-1;c=true}}}c=true;for(var g=e.length-2;g>=0&&c;g-=2){var a=Math.floor(e[g]);var h=Math.floor(e[g+1]);if(a<-1||a>d||h<-1||h>b){throw"Error._ab "}c=false;if(a==-1){e[g]=0;c=true}else{if(a==d){e[g]=d-1;c=true}}if(h==-1){e[g+1]=0;c=true}else{if(h==b){e[g+1]=b-1;c=true}}}};_aa._af=function(b,d,a){var k=new _ac(d);var j=new Array(d<<1);for(var f=0;f<d;f++){var g=j.length;var i=f+0.5;for(var h=0;h<g;h+=2){j[h]=(h>>1)+0.5;j[h+1]=i}a._ad(j);_aa._ab(b,j);try{for(var h=0;h<g;h+=2){var e=b[Math.floor(j[h])+qrcode.width*Math.floor(j[h+1])];if(e){k._dq(h>>1,f)}}}catch(c){throw"Error._ab"}}return k};_aa._ah=function(h,o,l,k,q,p,b,a,f,e,n,m,s,r,d,c,j,i){var g=_ae._ag(l,k,q,p,b,a,f,e,n,m,s,r,d,c,j,i);return _aa._af(h,o,g)};function _a1(b,a){this.count=b;this._fc=a;this.__defineGetter__("Count",function(){return this.count});this.__defineGetter__("_dm",function(){return this._fc})}function _a2(a,c,b){this._bm=a;if(b){this._do=new Array(c,b)}else{this._do=new Array(c)}this.__defineGetter__("_bo",function(){return this._bm});this.__defineGetter__("_dn",function(){return this._bm*this._fo});this.__defineGetter__("_fo",function(){var e=0;for(var d=0;d<this._do.length;d++){e+=this._do[d].length}return e});this._fb=function(){return this._do}}function _a3(k,l,h,g,f,e){this._bs=k;this._ar=l;this._do=new Array(h,g,f,e);var j=0;var b=h._bo;var a=h._fb();for(var d=0;d<a.length;d++){var c=a[d];j+=c.Count*(c._dm+b)}this._br=j;this.__defineGetter__("_fd",function(){return this._bs});this.__defineGetter__("_as",function(){return this._ar});this.__defineGetter__("_dp",function(){return this._br});this.__defineGetter__("_cr",function(){return 17+4*this._bs});this._aq=function(){var q=this._cr;var o=new _ac(q);o._bq(0,0,9,9);o._bq(q-8,0,8,9);o._bq(0,q-8,9,8);var n=this._ar.length;for(var m=0;m<n;m++){var p=this._ar[m]-2;for(var r=0;r<n;r++){if((m==0&&(r==0||r==n-1))||(m==n-1&&r==0)){continue}o._bq(this._ar[r]-2,p,5,5)}}o._bq(6,9,1,q-17);o._bq(9,6,q-17,1);if(this._bs>6){o._bq(q-11,0,3,6);o._bq(0,q-11,6,3)}return o};this._bu=function(i){return this._do[i.ordinal()]}}_a3._bv=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);_a3.VERSIONS=_ay();_a3._av=function(a){if(a<1||a>40){throw"bad arguments"}return _a3.VERSIONS[a-1]};_a3._at=function(b){if(b%4!=1){throw"Error _at"}try{return _a3._av((b-17)>>2)}catch(a){throw"Error _av"}};_a3._aw=function(d){var b=4294967295;var f=0;for(var c=0;c<_a3._bv.length;c++){var a=_a3._bv[c];if(a==d){return this._av(c+7)}var e=_ax._gj(d,a);if(e<b){f=c+7;b=e}}if(b<=3){return this._av(f)}return null};function _ay(){return new Array(new _a3(1,new Array(),new _a2(7,new _a1(1,19)),new _a2(10,new _a1(1,16)),new _a2(13,new _a1(1,13)),new _a2(17,new _a1(1,9))),new _a3(2,new Array(6,18),new _a2(10,new _a1(1,34)),new _a2(16,new _a1(1,28)),new _a2(22,new _a1(1,22)),new _a2(28,new _a1(1,16))),new _a3(3,new Array(6,22),new _a2(15,new _a1(1,55)),new _a2(26,new _a1(1,44)),new _a2(18,new _a1(2,17)),new _a2(22,new _a1(2,13))),new _a3(4,new Array(6,26),new _a2(20,new _a1(1,80)),new _a2(18,new _a1(2,32)),new _a2(26,new _a1(2,24)),new _a2(16,new _a1(4,9))),new _a3(5,new Array(6,30),new _a2(26,new _a1(1,108)),new _a2(24,new _a1(2,43)),new _a2(18,new _a1(2,15),new _a1(2,16)),new _a2(22,new _a1(2,11),new _a1(2,12))),new _a3(6,new Array(6,34),new _a2(18,new _a1(2,68)),new _a2(16,new _a1(4,27)),new _a2(24,new _a1(4,19)),new _a2(28,new _a1(4,15))),new _a3(7,new Array(6,22,38),new _a2(20,new _a1(2,78)),new _a2(18,new _a1(4,31)),new _a2(18,new _a1(2,14),new _a1(4,15)),new _a2(26,new _a1(4,13),new _a1(1,14))),new _a3(8,new Array(6,24,42),new _a2(24,new _a1(2,97)),new _a2(22,new _a1(2,38),new _a1(2,39)),new _a2(22,new _a1(4,18),new _a1(2,19)),new _a2(26,new _a1(4,14),new _a1(2,15))),new _a3(9,new Array(6,26,46),new _a2(30,new _a1(2,116)),new _a2(22,new _a1(3,36),new _a1(2,37)),new _a2(20,new _a1(4,16),new _a1(4,17)),new _a2(24,new _a1(4,12),new _a1(4,13))),new _a3(10,new Array(6,28,50),new _a2(18,new _a1(2,68),new _a1(2,69)),new _a2(26,new _a1(4,43),new _a1(1,44)),new _a2(24,new _a1(6,19),new _a1(2,20)),new _a2(28,new _a1(6,15),new _a1(2,16))),new _a3(11,new Array(6,30,54),new _a2(20,new _a1(4,81)),new _a2(30,new _a1(1,50),new _a1(4,51)),new _a2(28,new _a1(4,22),new _a1(4,23)),new _a2(24,new _a1(3,12),new _a1(8,13))),new _a3(12,new Array(6,32,58),new _a2(24,new _a1(2,92),new _a1(2,93)),new _a2(22,new _a1(6,36),new _a1(2,37)),new _a2(26,new _a1(4,20),new _a1(6,21)),new _a2(28,new _a1(7,14),new _a1(4,15))),new _a3(13,new Array(6,34,62),new _a2(26,new _a1(4,107)),new _a2(22,new _a1(8,37),new _a1(1,38)),new _a2(24,new _a1(8,20),new _a1(4,21)),new _a2(22,new _a1(12,11),new _a1(4,12))),new _a3(14,new Array(6,26,46,66),new _a2(30,new _a1(3,115),new _a1(1,116)),new _a2(24,new _a1(4,40),new _a1(5,41)),new _a2(20,new _a1(11,16),new _a1(5,17)),new _a2(24,new _a1(11,12),new _a1(5,13))),new _a3(15,new Array(6,26,48,70),new _a2(22,new _a1(5,87),new _a1(1,88)),new _a2(24,new _a1(5,41),new _a1(5,42)),new _a2(30,new _a1(5,24),new _a1(7,25)),new _a2(24,new _a1(11,12),new _a1(7,13))),new _a3(16,new Array(6,26,50,74),new _a2(24,new _a1(5,98),new _a1(1,99)),new _a2(28,new _a1(7,45),new _a1(3,46)),new _a2(24,new _a1(15,19),new _a1(2,20)),new _a2(30,new _a1(3,15),new _a1(13,16))),new _a3(17,new Array(6,30,54,78),new _a2(28,new _a1(1,107),new _a1(5,108)),new _a2(28,new _a1(10,46),new _a1(1,47)),new _a2(28,new _a1(1,22),new _a1(15,23)),new _a2(28,new _a1(2,14),new _a1(17,15))),new _a3(18,new Array(6,30,56,82),new _a2(30,new _a1(5,120),new _a1(1,121)),new _a2(26,new _a1(9,43),new _a1(4,44)),new _a2(28,new _a1(17,22),new _a1(1,23)),new _a2(28,new _a1(2,14),new _a1(19,15))),new _a3(19,new Array(6,30,58,86),new _a2(28,new _a1(3,113),new _a1(4,114)),new _a2(26,new _a1(3,44),new _a1(11,45)),new _a2(26,new _a1(17,21),new _a1(4,22)),new _a2(26,new _a1(9,13),new _a1(16,14))),new _a3(20,new Array(6,34,62,90),new _a2(28,new _a1(3,107),new _a1(5,108)),new _a2(26,new _a1(3,41),new _a1(13,42)),new _a2(30,new _a1(15,24),new _a1(5,25)),new _a2(28,new _a1(15,15),new _a1(10,16))),new _a3(21,new Array(6,28,50,72,94),new _a2(28,new _a1(4,116),new _a1(4,117)),new _a2(26,new _a1(17,42)),new _a2(28,new _a1(17,22),new _a1(6,23)),new _a2(30,new _a1(19,16),new _a1(6,17))),new _a3(22,new Array(6,26,50,74,98),new _a2(28,new _a1(2,111),new _a1(7,112)),new _a2(28,new _a1(17,46)),new _a2(30,new _a1(7,24),new _a1(16,25)),new _a2(24,new _a1(34,13))),new _a3(23,new Array(6,30,54,74,102),new _a2(30,new _a1(4,121),new _a1(5,122)),new _a2(28,new _a1(4,47),new _a1(14,48)),new _a2(30,new _a1(11,24),new _a1(14,25)),new _a2(30,new _a1(16,15),new _a1(14,16))),new _a3(24,new Array(6,28,54,80,106),new _a2(30,new _a1(6,117),new _a1(4,118)),new _a2(28,new _a1(6,45),new _a1(14,46)),new _a2(30,new _a1(11,24),new _a1(16,25)),new _a2(30,new _a1(30,16),new _a1(2,17))),new _a3(25,new Array(6,32,58,84,110),new _a2(26,new _a1(8,106),new _a1(4,107)),new _a2(28,new _a1(8,47),new _a1(13,48)),new _a2(30,new _a1(7,24),new _a1(22,25)),new _a2(30,new _a1(22,15),new _a1(13,16))),new _a3(26,new Array(6,30,58,86,114),new _a2(28,new _a1(10,114),new _a1(2,115)),new _a2(28,new _a1(19,46),new _a1(4,47)),new _a2(28,new _a1(28,22),new _a1(6,23)),new _a2(30,new _a1(33,16),new _a1(4,17))),new _a3(27,new Array(6,34,62,90,118),new _a2(30,new _a1(8,122),new _a1(4,123)),new _a2(28,new _a1(22,45),new _a1(3,46)),new _a2(30,new _a1(8,23),new _a1(26,24)),new _a2(30,new _a1(12,15),new _a1(28,16))),new _a3(28,new Array(6,26,50,74,98,122),new _a2(30,new _a1(3,117),new _a1(10,118)),new _a2(28,new _a1(3,45),new _a1(23,46)),new _a2(30,new _a1(4,24),new _a1(31,25)),new _a2(30,new _a1(11,15),new _a1(31,16))),new _a3(29,new Array(6,30,54,78,102,126),new _a2(30,new _a1(7,116),new _a1(7,117)),new _a2(28,new _a1(21,45),new _a1(7,46)),new _a2(30,new _a1(1,23),new _a1(37,24)),new _a2(30,new _a1(19,15),new _a1(26,16))),new _a3(30,new Array(6,26,52,78,104,130),new _a2(30,new _a1(5,115),new _a1(10,116)),new _a2(28,new _a1(19,47),new _a1(10,48)),new _a2(30,new _a1(15,24),new _a1(25,25)),new _a2(30,new _a1(23,15),new _a1(25,16))),new _a3(31,new Array(6,30,56,82,108,134),new _a2(30,new _a1(13,115),new _a1(3,116)),new _a2(28,new _a1(2,46),new _a1(29,47)),new _a2(30,new _a1(42,24),new _a1(1,25)),new _a2(30,new _a1(23,15),new _a1(28,16))),new _a3(32,new Array(6,34,60,86,112,138),new _a2(30,new _a1(17,115)),new _a2(28,new _a1(10,46),new _a1(23,47)),new _a2(30,new _a1(10,24),new _a1(35,25)),new _a2(30,new _a1(19,15),new _a1(35,16))),new _a3(33,new Array(6,30,58,86,114,142),new _a2(30,new _a1(17,115),new _a1(1,116)),new _a2(28,new _a1(14,46),new _a1(21,47)),new _a2(30,new _a1(29,24),new _a1(19,25)),new _a2(30,new _a1(11,15),new _a1(46,16))),new _a3(34,new Array(6,34,62,90,118,146),new _a2(30,new _a1(13,115),new _a1(6,116)),new _a2(28,new _a1(14,46),new _a1(23,47)),new _a2(30,new _a1(44,24),new _a1(7,25)),new _a2(30,new _a1(59,16),new _a1(1,17))),new _a3(35,new Array(6,30,54,78,102,126,150),new _a2(30,new _a1(12,121),new _a1(7,122)),new _a2(28,new _a1(12,47),new _a1(26,48)),new _a2(30,new _a1(39,24),new _a1(14,25)),new _a2(30,new _a1(22,15),new _a1(41,16))),new _a3(36,new Array(6,24,50,76,102,128,154),new _a2(30,new _a1(6,121),new _a1(14,122)),new _a2(28,new _a1(6,47),new _a1(34,48)),new _a2(30,new _a1(46,24),new _a1(10,25)),new _a2(30,new _a1(2,15),new _a1(64,16))),new _a3(37,new Array(6,28,54,80,106,132,158),new _a2(30,new _a1(17,122),new _a1(4,123)),new _a2(28,new _a1(29,46),new _a1(14,47)),new _a2(30,new _a1(49,24),new _a1(10,25)),new _a2(30,new _a1(24,15),new _a1(46,16))),new _a3(38,new Array(6,32,58,84,110,136,162),new _a2(30,new _a1(4,122),new _a1(18,123)),new _a2(28,new _a1(13,46),new _a1(32,47)),new _a2(30,new _a1(48,24),new _a1(14,25)),new _a2(30,new _a1(42,15),new _a1(32,16))),new _a3(39,new Array(6,26,54,82,110,138,166),new _a2(30,new _a1(20,117),new _a1(4,118)),new _a2(28,new _a1(40,47),new _a1(7,48)),new _a2(30,new _a1(43,24),new _a1(22,25)),new _a2(30,new _a1(10,15),new _a1(67,16))),new _a3(40,new Array(6,30,58,86,114,142,170),new _a2(30,new _a1(19,118),new _a1(6,119)),new _a2(28,new _a1(18,47),new _a1(31,48)),new _a2(30,new _a1(34,24),new _a1(34,25)),new _a2(30,new _a1(20,15),new _a1(61,16))))}function _ae(i,f,c,h,e,b,g,d,a){this.a11=i;this.a12=h;this.a13=g;this.a21=f;this.a22=e;this.a23=d;this.a31=c;this.a32=b;this.a33=a;this._ad=function(v){var s=v.length;var z=this.a11;var w=this.a12;var u=this.a13;var q=this.a21;var p=this.a22;var o=this.a23;var m=this.a31;var k=this.a32;var j=this.a33;for(var n=0;n<s;n+=2){var t=v[n];var r=v[n+1];var l=u*t+o*r+j;v[n]=(z*t+q*r+m)/l;v[n+1]=(w*t+p*r+k)/l}};this._fp=function(m,k){var q=m.length;for(var l=0;l<q;l++){var j=m[l];var p=k[l];var o=this.a13*j+this.a23*p+this.a33;m[l]=(this.a11*j+this.a21*p+this.a31)/o;k[l]=(this.a12*j+this.a22*p+this.a32)/o}};this._fr=function(){return new _ae(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(j){return new _ae(this.a11*j.a11+this.a21*j.a12+this.a31*j.a13,this.a11*j.a21+this.a21*j.a22+this.a31*j.a23,this.a11*j.a31+this.a21*j.a32+this.a31*j.a33,this.a12*j.a11+this.a22*j.a12+this.a32*j.a13,this.a12*j.a21+this.a22*j.a22+this.a32*j.a23,this.a12*j.a31+this.a22*j.a32+this.a32*j.a33,this.a13*j.a11+this.a23*j.a12+this.a33*j.a13,this.a13*j.a21+this.a23*j.a22+this.a33*j.a23,this.a13*j.a31+this.a23*j.a32+this.a33*j.a33)}}_ae._ag=function(p,e,o,d,n,c,m,b,h,q,l,f,a,j,i,r){var g=this._be(p,e,o,d,n,c,m,b);var k=this._bf(h,q,l,f,a,j,i,r);return k.times(g)};_ae._bf=function(d,p,c,m,b,k,a,j){var h=j-k;var f=p-m+k-j;if(h==0&&f==0){return new _ae(c-d,b-c,d,m-p,k-m,p,0,0,1)}else{var q=c-b;var o=a-b;var l=d-c+b-a;var i=m-k;var e=q*h-o*i;var n=(l*h-o*f)/e;var g=(q*f-l*i)/e;return new _ae(c-d+n*c,a-d+g*a,d,m-p+n*m,j-p+g*j,p,n,g,1)}};_ae._be=function(f,h,d,g,b,e,a,c){return this._bf(f,h,d,g,b,e,a,c)._fr()};function _bg(b,a){this.bits=b;this.points=a}function Detector(a){this.image=a;this._am=null;this._bi=function(m,l,c,b){var d=Math.abs(b-l)>Math.abs(c-m);if(d){var r=m;m=l;l=r;r=c;c=b;b=r}var j=Math.abs(c-m);var i=Math.abs(b-l);var p=-j>>1;var u=l<b?1:-1;var f=m<c?1:-1;var e=0;for(var h=m,g=l;h!=c;h+=f){var t=d?g:h;var s=d?h:g;if(e==1){if(this.image[t+s*qrcode.width]){e++}}else{if(!this.image[t+s*qrcode.width]){e++}}if(e==3){var o=h-m;var n=g-l;return Math.sqrt((o*o+n*n))}p+=i;if(p>0){if(g==b){break}g+=u;p-=j}}var k=c-m;var q=b-l;return Math.sqrt((k*k+q*q))};this._bh=function(i,g,h,f){var b=this._bi(i,g,h,f);var e=1;var d=i-(h-i);if(d<0){e=i/(i-d);d=0}else{if(d>=qrcode.width){e=(qrcode.width-1-i)/(d-i);d=qrcode.width-1}}var c=Math.floor(g-(f-g)*e);e=1;if(c<0){e=g/(g-c);c=0}else{if(c>=qrcode.height){e=(qrcode.height-1-g)/(c-g);c=qrcode.height-1}}d=Math.floor(i+(d-i)*e);b+=this._bi(i,g,d,c);return b-1};this._bj=function(c,d){var b=this._bh(Math.floor(c.X),Math.floor(c.Y),Math.floor(d.X),Math.floor(d.Y));var e=this._bh(Math.floor(d.X),Math.floor(d.Y),Math.floor(c.X),Math.floor(c.Y));if(isNaN(b)){return e/7}if(isNaN(e)){return b/7}return(b+e)/14};this._bk=function(d,c,b){return(this._bj(d,c)+this._bj(d,b))/2};this.distance=function(d,b){var e=d.X-b.X;var c=d.Y-b.Y;return Math.sqrt((e*e+c*c))};this._bx=function(g,f,d,e){var b=Math.round(this.distance(g,f)/e);var c=Math.round(this.distance(g,d)/e);var h=((b+c)>>1)+7;switch(h&3){case 0:h++;break;case 2:h--;break;case 3:throw"Error"}return h};this._bl=function(g,f,d,j){var k=Math.floor(j*g);var h=Math.max(0,f-k);var i=Math.min(qrcode.width-1,f+k);if(i-h<g*3){throw"Error"}var b=Math.max(0,d-k);var c=Math.min(qrcode.height-1,d+k);var e=new _ak(this.image,h,b,i-h,c-b,g,this._am);return e.find()};this.createTransform=function(l,h,k,b,g){var j=g-3.5;var i;var f;var e;var c;if(b!=null){i=b.X;f=b.Y;e=c=j-3}else{i=(h.X-l.X)+k.X;f=(h.Y-l.Y)+k.Y;e=c=j}var d=_ae._ag(3.5,3.5,j,3.5,e,c,3.5,j,l.X,l.Y,h.X,h.Y,i,f,k.X,k.Y);return d};this._bz=function(e,b,d){var c=_aa;return c._af(e,d,b)};this._cd=function(q){var j=q._gq;var h=q._gs;var n=q._gp;var d=this._bk(j,h,n);if(d<1){throw"Error"}var r=this._bx(j,h,n,d);var b=_a3._at(r);var k=b._cr-7;var l=null;if(b._as.length>0){var f=h.X-j.X+n.X;var e=h.Y-j.Y+n.Y;var c=1-3/k;var t=Math.floor(j.X+c*(f-j.X));var s=Math.floor(j.Y+c*(e-j.Y));for(var p=4;p<=16;p<<=1){l=this._bl(d,t,s,p);break}}var g=this.createTransform(j,h,n,l,r);var m=this._bz(this.image,g,r);var o;if(l==null){o=new Array(n,j,h)}else{o=new Array(n,j,h,l)}return new _bg(m,o)};this.detect=function(){var b=new _cc()._ce(this.image);return this._cd(b)}}var _ca=21522;var _cb=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));var _ch=new Array(0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4);function _ax(a){this._cf=_cg.forBits((a>>3)&3);this._fe=(a&7);this.__defineGetter__("_cg",function(){return this._cf});this.__defineGetter__("_dx",function(){return this._fe});this.GetHashCode=function(){return(this._cf.ordinal()<<3)|_fe};this.Equals=function(c){var b=c;return this._cf==b._cf&&this._fe==b._fe}}_ax._gj=function(d,c){d^=c;return _ch[d&15]+_ch[(_ew(d,4)&15)]+_ch[(_ew(d,8)&15)]+_ch[(_ew(d,12)&15)]+_ch[(_ew(d,16)&15)]+_ch[(_ew(d,20)&15)]+_ch[(_ew(d,24)&15)]+_ch[(_ew(d,28)&15)]};_ax._ci=function(a){var b=_ax._cj(a);if(b!=null){return b}return _ax._cj(a^_ca)};_ax._cj=function(d){var b=4294967295;var a=0;for(var c=0;c<_cb.length;c++){var g=_cb[c];var f=g[0];if(f==d){return new _ax(g[1])}var e=this._gj(d,f);if(e<b){a=g[1];b=e}}if(b<=3){return new _ax(a)}return null};function _cg(a,c,b){this._ff=a;this.bits=c;this.name=b;this.__defineGetter__("Bits",function(){return this.bits});this.__defineGetter__("Name",function(){return this.name});this.ordinal=function(){return this._ff}}_cg.forBits=function(a){if(a<0||a>=FOR_BITS.length){throw"bad arguments"}return FOR_BITS[a]};var L=new _cg(0,1,"L");var M=new _cg(1,0,"M");var Q=new _cg(2,3,"Q");var H=new _cg(3,2,"H");var FOR_BITS=new Array(M,L,H,Q);function _ac(d,a){if(!a){a=d}if(d<1||a<1){throw"Both dimensions must be greater than 0"}this.width=d;this.height=a;var c=d>>5;if((d&31)!=0){c++}this.rowSize=c;this.bits=new Array(c*a);for(var b=0;b<this.bits.length;b++){this.bits[b]=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._ds=function(e,g){var f=g*this.rowSize+(e>>5);return((_ew(this.bits[f],(e&31)))&1)!=0};this._dq=function(e,g){var f=g*this.rowSize+(e>>5);this.bits[f]|=1<<(e&31)};this.flip=function(e,g){var f=g*this.rowSize+(e>>5);this.bits[f]^=1<<(e&31)};this.clear=function(){var e=this.bits.length;for(var f=0;f<e;f++){this.bits[f]=0}};this._bq=function(g,j,f,m){if(j<0||g<0){throw"Left and top must be nonnegative"}if(m<1||f<1){throw"Height and width must be at least 1"}var l=g+f;var e=j+m;if(e>this.height||l>this.width){throw"The region must fit inside the matrix"}for(var i=j;i<e;i++){var h=i*this.rowSize;for(var k=g;k<l;k++){this.bits[h+(k>>5)]|=1<<(k&31)}}}}function _dl(a,b){this._dv=a;this._dw=b;this.__defineGetter__("_du",function(){return this._dv});this.__defineGetter__("Codewords",function(){return this._dw})}_dl._gn=function(c,h,r){if(c.length!=h._dp){throw"bad arguments"}var k=h._bu(r);var e=0;var d=k._fb();for(var q=0;q<d.length;q++){e+=d[q].Count}var l=new Array(e);var n=0;for(var o=0;o<d.length;o++){var f=d[o];for(var q=0;q<f.Count;q++){var m=f._dm;var s=k._bo+m;l[n++]=new _dl(m,new Array(s))}}var t=l[0]._dw.length;var b=l.length-1;while(b>=0){var v=l[b]._dw.length;if(v==t){break}b--}b++;var g=t-k._bo;var a=0;for(var q=0;q<g;q++){for(var o=0;o<n;o++){l[o]._dw[q]=c[a++]}}for(var o=b;o<n;o++){l[o]._dw[g]=c[a++]}var p=l[0]._dw.length;for(var q=g;q<p;q++){for(var o=0;o<n;o++){var u=o<b?q:q+1;l[o]._dw[u]=c[a++]}}return l};function _cl(a){var b=a.Dimension;if(b<21||(b&3)!=1){throw"Error _cl"}this._au=a;this._cp=null;this._co=null;this._dk=function(d,c,e){return this._au._ds(d,c)?(e<<1)|1:e<<1};this._cm=function(){if(this._co!=null){return this._co}var g=0;for(var e=0;e<6;e++){g=this._dk(e,8,g)}g=this._dk(7,8,g);g=this._dk(8,8,g);g=this._dk(8,7,g);for(var c=5;c>=0;c--){g=this._dk(8,c,g)}this._co=_ax._ci(g);if(this._co!=null){return this._co}var f=this._au.Dimension;g=0;var d=f-8;for(var e=f-1;e>=d;e--){g=this._dk(e,8,g)}for(var c=f-7;c<f;c++){g=this._dk(8,c,g)}this._co=_ax._ci(g);if(this._co!=null){return this._co}throw"Error _cm"};this._cq=function(){if(this._cp!=null){return this._cp}var h=this._au.Dimension;var f=(h-17)>>2;if(f<=6){return _a3._av(f)}var g=0;var e=h-11;for(var c=5;c>=0;c--){for(var d=h-9;d>=e;d--){g=this._dk(d,c,g)}}this._cp=_a3._aw(g);if(this._cp!=null&&this._cp._cr==h){return this._cp}g=0;for(var d=5;d>=0;d--){for(var c=h-9;c>=e;c--){g=this._dk(d,c,g)}}this._cp=_a3._aw(g);if(this._cp!=null&&this._cp._cr==h){return this._cp}throw"Error _cq"};this._gk=function(){var q=this._cm();var o=this._cq();var c=_dx._gl(q._dx);var f=this._au.Dimension;c._dj(this._au,f);var k=o._aq();var n=true;var r=new Array(o._dp);var m=0;var p=0;var h=0;for(var e=f-1;e>0;e-=2){if(e==6){e--}for(var l=0;l<f;l++){var g=n?f-1-l:l;for(var d=0;d<2;d++){if(!k._ds(e-d,g)){h++;p<<=1;if(this._au._ds(e-d,g)){p|=1}if(h==8){r[m++]=p;h=0;p=0}}}}n^=true}if(m!=o._dp){throw"Error _gk"}return r}}var _dx={};_dx._gl=function(a){if(a<0||a>7){throw"bad arguments"}return _dx._dy[a]};function _fg(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(b,a){return((b+a)&1)==0}}function _fh(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(b,a){return(b&1)==0}}function _fi(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(b,a){return a%3==0}}function _fj(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(b,a){return(b+a)%3==0}}function _fk(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(b,a){return(((_ew(b,1))+(a/3))&1)==0}}function _fl(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(c,b){var a=c*b;return(a&1)+(a%3)==0}}function _fm(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(c,b){var a=c*b;return(((a&1)+(a%3))&1)==0}}function _fn(){this._dj=function(c,d){for(var b=0;b<d;b++){for(var a=0;a<d;a++){if(this._fw(b,a)){c.flip(a,b)}}}};this._fw=function(b,a){return((((b+a)&1)+((b*a)%3))&1)==0}}_dx._dy=new Array(new _fg(),new _fh(),new _fi(),new _fj(),new _fk(),new _fl(),new _fm(),new _fn());function _db(a){this._fa=a;this.decode=function(j,f){var c=new _bp(this._fa,j);var p=new Array(f);for(var g=0;g<p.length;g++){p[g]=0}var m=false;var d=true;for(var g=0;g<f;g++){var q=c.evaluateAt(this._fa.exp(m?g+1:g));p[p.length-1-g]=q;if(q!=0){d=false}}if(d){return}var b=new _bp(this._fa,p);var l=this._eb(this._fa._ba(f,1),b,f);var o=l[0];var n=l[1];var k=this._ey(o);var e=this._di(n,k,m);for(var g=0;g<k.length;g++){var h=j.length-1-this._fa.log(k[g]);if(h<0){throw"ReedSolomonException Bad error location"}j[h]=_az._bd(j[h],e[g])}};this._eb=function(z,y,f){if(z._ec<y._ec){var w=z;z=y;y=w}var B=z;var k=y;var o=this._fa.One;var j=this._fa.Zero;var e=this._fa.Zero;var i=this._fa.One;while(k._ec>=Math.floor(f/2)){var x=B;var g=o;var v=e;B=k;o=j;e=i;if(B.Zero){throw"r_{i-1} was zero"}k=x;var m=this._fa.Zero;var p=B._ex(B._ec);var h=this._fa.inverse(p);while(k._ec>=B._ec&&!k.Zero){var c=k._ec-B._ec;var A=this._fa.multiply(k._ex(k._ec),h);m=m._bd(this._fa._ba(c,A));k=k._bd(B._dc(c,A))}j=m.multiply1(o)._bd(g);i=m.multiply1(e)._bd(v)}var u=i._ex(0);if(u==0){throw"ReedSolomonException sigmaTilde(0) was zero"}var d=this._fa.inverse(u);var n=i.multiply2(d);var l=k.multiply2(d);return new Array(n,l)};this._ey=function(f){var g=f._ec;if(g==1){return new Array(f._ex(1))}var b=new Array(g);var d=0;for(var c=1;c<256&&d<g;c++){if(f.evaluateAt(c)==0){b[d]=this._fa.inverse(c);d++}}if(d!=g){throw"Error locator degree does not match number of roots"}return b};this._di=function(f,h,g){var k=h.length;var l=new Array(k);for(var e=0;e<k;e++){var b=this._fa.inverse(h[e]);var c=1;for(var d=0;d<k;d++){if(e!=d){c=this._fa.multiply(c,_az._bd(1,this._fa.multiply(h[d],b)))}}l[e]=this._fa.multiply(f.evaluateAt(b),this._fa.inverse(c));if(g){l[e]=this._fa.multiply(l[e],b)}}return l}}function _bp(f,e){if(e==null||e.length==0){throw"bad arguments"}this._fa=f;var c=e.length;if(c>1&&e[0]==0){var d=1;while(d<c&&e[d]==0){d++}if(d==c){this._dd=f.Zero._dd}else{this._dd=new Array(c-d);for(var b=0;b<this._dd.length;b++){this._dd[b]=0}for(var a=0;a<this._dd.length;a++){this._dd[a]=e[d+a]}}}else{this._dd=e}this.__defineGetter__("Zero",function(){return this._dd[0]==0});this.__defineGetter__("_ec",function(){return this._dd.length-1});this.__defineGetter__("Coefficients",function(){return this._dd});this._ex=function(g){return this._dd[this._dd.length-1-g]};this.evaluateAt=function(h){if(h==0){return this._ex(0)}var l=this._dd.length;if(h==1){var g=0;for(var k=0;k<l;k++){g=_az._bd(g,this._dd[k])}return g}var j=this._dd[0];for(var k=1;k<l;k++){j=_az._bd(this._fa.multiply(h,j),this._dd[k])}return j};this._bd=function(g){if(this._fa!=g._fa){throw"GF256Polys do not have same _az _fa"}if(this.Zero){return g}if(g.Zero){return this}var o=this._dd;var n=g._dd;if(o.length>n.length){var j=o;o=n;n=j}var h=new Array(n.length);var k=n.length-o.length;for(var m=0;m<k;m++){h[m]=n[m]}for(var l=k;l<n.length;l++){h[l]=_az._bd(o[l-k],n[l])}return new _bp(f,h)};this.multiply1=function(o){if(this._fa!=o._fa){throw"GF256Polys do not have same _az _fa"}if(this.Zero||o.Zero){return this._fa.Zero}var q=this._dd;var g=q.length;var l=o._dd;var n=l.length;var p=new Array(g+n-1);for(var m=0;m<g;m++){var h=q[m];for(var k=0;k<n;k++){p[m+k]=_az._bd(p[m+k],this._fa.multiply(h,l[k]))}}return new _bp(this._fa,p)};this.multiply2=function(g){if(g==0){return this._fa.Zero}if(g==1){return this}var j=this._dd.length;var k=new Array(j);for(var h=0;h<j;h++){k[h]=this._fa.multiply(this._dd[h],g)}return new _bp(this._fa,k)};this._dc=function(l,g){if(l<0){throw"bad arguments"}if(g==0){return this._fa.Zero}var j=this._dd.length;var k=new Array(j+l);for(var h=0;h<k.length;h++){k[h]=0}for(var h=0;h<j;h++){k[h]=this._fa.multiply(this._dd[h],g)}return new _bp(this._fa,k)};this.divide=function(l){if(this._fa!=l._fa){throw"GF256Polys do not have same _az _fa"}if(l.Zero){throw"Divide by 0"}var j=this._fa.Zero;var o=this;var g=l._ex(l._ec);var n=this._fa.inverse(g);while(o._ec>=l._ec&&!o.Zero){var m=o._ec-l._ec;var h=this._fa.multiply(o._ex(o._ec),n);var i=l._dc(m,h);var k=this._fa._ba(m,h);j=j._bd(k);o=o._bd(i)}return new Array(j,o)}}function _az(b){this._gh=new Array(256);this._gi=new Array(256);var a=1;for(var e=0;e<256;e++){this._gh[e]=a;a<<=1;if(a>=256){a^=b}}for(var e=0;e<255;e++){this._gi[this._gh[e]]=e}var d=new Array(1);d[0]=0;this.zero=new _bp(this,new Array(d));var c=new Array(1);c[0]=1;this.one=new _bp(this,new Array(c));this.__defineGetter__("Zero",function(){return this.zero});this.__defineGetter__("One",function(){return this.one});this._ba=function(j,f){if(j<0){throw"bad arguments"}if(f==0){return zero}var h=new Array(j+1);for(var g=0;g<h.length;g++){h[g]=0}h[0]=f;return new _bp(this,h)};this.exp=function(f){return this._gh[f]};this.log=function(f){if(f==0){throw"bad arguments"}return this._gi[f]};this.inverse=function(f){if(f==0){throw"System.ArithmeticException"}return this._gh[255-this._gi[f]]};this.multiply=function(g,f){if(g==0||f==0){return 0}if(g==1){return f}if(f==1){return g}return this._gh[(this._gi[g]+this._gi[f])%255]}}_az._bb=new _az(285);_az._bc=new _az(301);_az._bd=function(d,c){return d^c};var Decoder={};Decoder.rsDecoder=new _db(_az._bb);Decoder.correctErrors=function(g,b){var d=g.length;var f=new Array(d);for(var e=0;e<d;e++){f[e]=g[e]&255}var a=g.length-b;try{Decoder.rsDecoder.decode(f,a)}catch(c){throw c}for(var e=0;e<b;e++){g[e]=f[e]}};Decoder.decode=function(q){var b=new _cl(q);var o=b._cq();var c=b._cm()._cg;var p=b._gk();var a=_dl._gn(p,o,c);var f=0;for(var k=0;k<a.length;k++){f+=a[k]._du}var e=new Array(f);var n=0;for(var h=0;h<a.length;h++){var m=a[h];var d=m.Codewords;var g=m._du;Decoder.correctErrors(d,g);for(var k=0;k<g;k++){e[n++]=d[k]}}var l=new QRCodeDataBlockReader(e,o._fd,c.Bits);return l};var qrcode={};qrcode.imagedata=null;qrcode.width=0;qrcode.height=0;qrcode.qrCodeSymbol=null;qrcode.debug=false;qrcode.maxImgSize=1024*1024;qrcode._eo=[[10,9,8,8],[12,11,16,10],[14,13,16,12]];qrcode.callback=null;qrcode.vidSuccess=function(a){qrcode.localstream=a;if(qrcode.webkit){qrcode.video.src=window.webkitURL.createObjectURL(a)}else{if(qrcode.moz){qrcode.video.mozSrcObject=a;qrcode.video.play()}else{qrcode.video.src=a}}qrcode.gUM=true;qrcode.canvas_qr2=document.createElement("canvas");qrcode.canvas_qr2.id="qr-canvas";qrcode.qrcontext2=qrcode.canvas_qr2.getContext("2d");qrcode.canvas_qr2.width=qrcode.video.videoWidth;qrcode.canvas_qr2.height=qrcode.video.videoHeight;setTimeout(qrcode.captureToCanvas,500)};qrcode.vidError=function(a){qrcode.gUM=false;return};qrcode.captureToCanvas=function(){if(qrcode.gUM){try{if(qrcode.video.videoWidth==0){setTimeout(qrcode.captureToCanvas,500);return}else{qrcode.canvas_qr2.width=qrcode.video.videoWidth;qrcode.canvas_qr2.height=qrcode.video.videoHeight}qrcode.qrcontext2.drawImage(qrcode.video,0,0);try{qrcode.decode()}catch(a){console.log(a);setTimeout(qrcode.captureToCanvas,500)}}catch(a){console.log(a);setTimeout(qrcode.captureToCanvas,500)}}};qrcode.setWebcam=function(c){var d=navigator;qrcode.video=document.getElementById(c);var a=true;if(navigator.mediaDevices&&navigator.mediaDevices.enumerateDevices){try{navigator.mediaDevices.enumerateDevices().then(function(e){e.forEach(function(f){console.log("deb1");if(f.kind==="videoinput"){if(f.label.toLowerCase().search("back")>-1){a=[{sourceId:f.deviceId}]}}console.log(f.kind+": "+f.label+" id = "+f.deviceId)})})}catch(b){console.log(b)}}else{console.log("no navigator.mediaDevices.enumerateDevices")}if(d.getUserMedia){d.getUserMedia({video:a,audio:false},qrcode.vidSuccess,qrcode.vidError)}else{if(d.webkitGetUserMedia){qrcode.webkit=true;d.webkitGetUserMedia({video:a,audio:false},qrcode.vidSuccess,qrcode.vidError)}else{if(d.mozGetUserMedia){qrcode.moz=true;d.mozGetUserMedia({video:a,audio:false},qrcode.vidSuccess,qrcode.vidError)}}}};qrcode.decode=function(d){if(arguments.length==0){if(qrcode.canvas_qr2){var b=qrcode.canvas_qr2;var a=qrcode.qrcontext2}else{var b=document.getElementById("qr-canvas");var a=b.getContext("2d")}qrcode.width=b.width;qrcode.height=b.height;qrcode.imagedata=a.getImageData(0,0,qrcode.width,qrcode.height);qrcode.result=qrcode.process(a);if(qrcode.callback!=null){qrcode.callback(qrcode.result)}return qrcode.result}else{var c=new Image();c.crossOrigin="Anonymous";c.onload=function(){var g=document.getElementById("out-canvas");if(g!=null){var j=g.getContext("2d");j.clearRect(0,0,320,240);j.drawImage(c,0,0,320,240)}var i=document.createElement("canvas");var h=i.getContext("2d");var f=c.height;var l=c.width;if(c.width*c.height>qrcode.maxImgSize){var k=c.width/c.height;f=Math.sqrt(qrcode.maxImgSize/k);l=k*f}i.width=l;i.height=f;h.drawImage(c,0,0,i.width,i.height);qrcode.width=i.width;qrcode.height=i.height;try{qrcode.imagedata=h.getImageData(0,0,i.width,i.height)}catch(m){qrcode.result="Cross domain image reading not supported in your browser! Save it to your computer then drag and drop the file!";if(qrcode.callback!=null){qrcode.callback(qrcode.result)}return}try{qrcode.result=qrcode.process(h)}catch(m){console.log(m);qrcode.result="error decoding QR Code"}if(qrcode.callback!=null){qrcode.callback(qrcode.result)}};c.onerror=function(){if(qrcode.callback!=null){qrcode.callback("Failed to load the image")}};c.src=d}};qrcode.isUrl=function(a){var b=/(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;return b.test(a)};qrcode.decode_url=function(b){var d="";try{d=escape(b)}catch(c){console.log(c);d=b}var a="";try{a=decodeURIComponent(d)}catch(c){console.log(c);a=d}return a};qrcode.decode_utf8=function(a){if(qrcode.isUrl(a)){return qrcode.decode_url(a)}else{return a}};qrcode.process=function(q){var a=new Date().getTime();var c=qrcode.grayScaleToBitmap(qrcode.grayscale());if(qrcode.debug){for(var m=0;m<qrcode.height;m++){for(var n=0;n<qrcode.width;n++){var o=(n*4)+(m*qrcode.width*4);qrcode.imagedata.data[o]=c[n+m*qrcode.width]?0:0;qrcode.imagedata.data[o+1]=c[n+m*qrcode.width]?0:0;qrcode.imagedata.data[o+2]=c[n+m*qrcode.width]?255:0}}q.putImageData(qrcode.imagedata,0,0)}var h=new Detector(c);var p=h.detect();if(qrcode.debug){for(var m=0;m<p.bits.Height;m++){for(var n=0;n<p.bits.Width;n++){var o=(n*4*2)+(m*2*qrcode.width*4);qrcode.imagedata.data[o]=p.bits._ds(n,m)?0:0;qrcode.imagedata.data[o+1]=p.bits._ds(n,m)?0:0;qrcode.imagedata.data[o+2]=p.bits._ds(n,m)?255:0}}q.putImageData(qrcode.imagedata,0,0)}var k=Decoder.decode(p.bits);var g=k.DataByte;var l="";for(var f=0;f<g.length;f++){for(var e=0;e<g[f].length;e++){l+=String.fromCharCode(g[f][e])}}var d=new Date().getTime();var b=d-a;console.log(b);return qrcode.decode_utf8(l)};qrcode.getPixel=function(b,d){if(qrcode.width<b){throw"point error"}if(qrcode.height<d){throw"point error"}var a=(b*4)+(d*qrcode.width*4);var c=(qrcode.imagedata.data[a]*33+qrcode.imagedata.data[a+1]*34+qrcode.imagedata.data[a+2]*33)/100;return c};qrcode.binarize=function(d){var c=new Array(qrcode.width*qrcode.height);for(var e=0;e<qrcode.height;e++){for(var b=0;b<qrcode.width;b++){var a=qrcode.getPixel(b,e);c[b+e*qrcode.width]=a<=d?true:false}}return c};qrcode._em=function(d){var c=4;var k=Math.floor(qrcode.width/c);var j=Math.floor(qrcode.height/c);var f=new Array(c);for(var g=0;g<c;g++){f[g]=new Array(c);for(var e=0;e<c;e++){f[g][e]=new Array(0,0)}}for(var o=0;o<c;o++){for(var a=0;a<c;a++){f[a][o][0]=255;for(var l=0;l<j;l++){for(var n=0;n<k;n++){var h=d[k*a+n+(j*o+l)*qrcode.width];if(h<f[a][o][0]){f[a][o][0]=h}if(h>f[a][o][1]){f[a][o][1]=h}}}}}var m=new Array(c);for(var b=0;b<c;b++){m[b]=new Array(c)}for(var o=0;o<c;o++){for(var a=0;a<c;a++){m[a][o]=Math.floor((f[a][o][0]+f[a][o][1])/2)}}return m};qrcode.grayScaleToBitmap=function(f){var k=qrcode._em(f);var b=k.length;var e=Math.floor(qrcode.width/b);var d=Math.floor(qrcode.height/b);var h=new ArrayBuffer(qrcode.width*qrcode.height);var c=new Uint8Array(h);for(var j=0;j<b;j++){for(var a=0;a<b;a++){for(var g=0;g<d;g++){for(var i=0;i<e;i++){c[e*a+i+(d*j+g)*qrcode.width]=(f[e*a+i+(d*j+g)*qrcode.width]<k[a][j])?true:false}}}}return c};qrcode.grayscale=function(){var e=new ArrayBuffer(qrcode.width*qrcode.height);var c=new Uint8Array(e);for(var d=0;d<qrcode.height;d++){for(var b=0;b<qrcode.width;b++){var a=qrcode.getPixel(b,d);c[b+d*qrcode.width]=a}}return c};function _ew(a,b){if(a>=0){return a>>b}else{return(a>>b)+(2<<~b)}}var _gf=3;var _eh=57;var _el=8;var _eg=2;qrcode._er=function(c){function b(m,k){var n=m.X-k.X;var l=m.Y-k.Y;return Math.sqrt((n*n+l*l))}function d(k,o,n){var m=o.x;var l=o.y;return((n.x-m)*(k.y-l))-((n.y-l)*(k.x-m))}var i=b(c[0],c[1]);var f=b(c[1],c[2]);var e=b(c[0],c[2]);var a,j,h;if(f>=i&&f>=e){j=c[0];a=c[1];h=c[2]}else{if(e>=f&&e>=i){j=c[1];a=c[0];h=c[2]}else{j=c[2];a=c[0];h=c[1]}}if(d(a,j,h)<0){var g=a;a=h;h=g}c[0]=a;c[1]=j;c[2]=h};function _cz(c,a,b){this.x=c;this.y=a;this.count=1;this._aj=b;this.__defineGetter__("_ei",function(){return this._aj});this.__defineGetter__("Count",function(){return this.count});this.__defineGetter__("X",function(){return this.x});this.__defineGetter__("Y",function(){return this.y});this._ek=function(){this.count++};this._ev=function(f,e,d){if(Math.abs(e-this.y)<=f&&Math.abs(d-this.x)<=f){var g=Math.abs(f-this._aj);return g<=1||g/this._aj<=1}return false}}function _es(a){this._go=a[0];this._gu=a[1];this._gr=a[2];this.__defineGetter__("_gp",function(){return this._go});this.__defineGetter__("_gq",function(){return this._gu});this.__defineGetter__("_gs",function(){return this._gr})}function _cc(){this.image=null;this._cv=[];this._ge=false;this._al=new Array(0,0,0,0,0);this._am=null;this.__defineGetter__("_da",function(){this._al[0]=0;this._al[1]=0;this._al[2]=0;this._al[3]=0;this._al[4]=0;return this._al});this._ao=function(f){var b=0;for(var d=0;d<5;d++){var e=f[d];if(e==0){return false}b+=e}if(b<7){return false}var c=Math.floor((b<<_el)/7);var a=Math.floor(c/2);return Math.abs(c-(f[0]<<_el))<a&&Math.abs(c-(f[1]<<_el))<a&&Math.abs(3*c-(f[2]<<_el))<3*a&&Math.abs(c-(f[3]<<_el))<a&&Math.abs(c-(f[4]<<_el))<a};this._an=function(b,a){return(a-b[4]-b[3])-b[2]/2};this._ap=function(a,j,d,g){var c=this.image;var h=qrcode.height;var b=this._da;var f=a;while(f>=0&&c[j+f*qrcode.width]){b[2]++;f--}if(f<0){return NaN}while(f>=0&&!c[j+f*qrcode.width]&&b[1]<=d){b[1]++;f--}if(f<0||b[1]>d){return NaN}while(f>=0&&c[j+f*qrcode.width]&&b[0]<=d){b[0]++;f--}if(b[0]>d){return NaN}f=a+1;while(f<h&&c[j+f*qrcode.width]){b[2]++;f++}if(f==h){return NaN}while(f<h&&!c[j+f*qrcode.width]&&b[3]<d){b[3]++;f++}if(f==h||b[3]>=d){return NaN}while(f<h&&c[j+f*qrcode.width]&&b[4]<d){b[4]++;f++}if(b[4]>=d){return NaN}var e=b[0]+b[1]+b[2]+b[3]+b[4];if(5*Math.abs(e-g)>=2*g){return NaN}return this._ao(b)?this._an(b,f):NaN};this._ej=function(b,a,e,h){var d=this.image;var i=qrcode.width;var c=this._da;var g=b;while(g>=0&&d[g+a*qrcode.width]){c[2]++;g--}if(g<0){return NaN}while(g>=0&&!d[g+a*qrcode.width]&&c[1]<=e){c[1]++;g--}if(g<0||c[1]>e){return NaN}while(g>=0&&d[g+a*qrcode.width]&&c[0]<=e){c[0]++;g--}if(c[0]>e){return NaN}g=b+1;while(g<i&&d[g+a*qrcode.width]){c[2]++;g++}if(g==i){return NaN}while(g<i&&!d[g+a*qrcode.width]&&c[3]<e){c[3]++;g++}if(g==i||c[3]>=e){return NaN}while(g<i&&d[g+a*qrcode.width]&&c[4]<e){c[4]++;g++}if(c[4]>=e){return NaN}var f=c[0]+c[1]+c[2]+c[3]+c[4];if(5*Math.abs(f-h)>=h){return NaN}return this._ao(c)?this._an(c,g):NaN};this._cu=function(c,f,e){var d=c[0]+c[1]+c[2]+c[3]+c[4];var n=this._an(c,e);var b=this._ap(f,Math.floor(n),c[2],d);if(!isNaN(b)){n=this._ej(Math.floor(n),Math.floor(b),c[2],d);if(!isNaN(n)){var l=d/7;var m=false;var h=this._cv.length;for(var g=0;g<h;g++){var a=this._cv[g];if(a._ev(l,b,n)){a._ek();m=true;break}}if(!m){var k=new _cz(n,b,l);this._cv.push(k);if(this._am!=null){this._am._ep(k)}}return true}}return false};this._ee=function(){var h=this._cv.length;if(h<3){throw"Couldn't find enough finder patterns (found "+h+")"}if(h>3){var b=0;var j=0;for(var d=0;d<h;d++){var g=this._cv[d]._ei;b+=g;j+=(g*g)}var a=b/h;this._cv.sort(function(m,l){var k=Math.abs(l._ei-a);var i=Math.abs(m._ei-a);if(k<i){return(-1)}else{if(k==i){return 0}else{return 1}}});var e=Math.sqrt(j/h-a*a);var c=Math.max(0.2*a,e);for(var d=this._cv.length-1;d>=0;d--){var f=this._cv[d];if(Math.abs(f._ei-a)>c){this._cv.splice(d,1)}}}if(this._cv.length>3){this._cv.sort(function(k,i){if(k.count>i.count){return -1}if(k.count<i.count){return 1}return 0})}return new Array(this._cv[0],this._cv[1],this._cv[2])};this._eq=function(){var b=this._cv.length;if(b<=1){return 0}var c=null;for(var d=0;d<b;d++){var a=this._cv[d];if(a.Count>=_eg){if(c==null){c=a}else{this._ge=true;return Math.floor((Math.abs(c.X-a.X)-Math.abs(c.Y-a.Y))/2)}}}return 0};this._cx=function(){var g=0;var c=0;var a=this._cv.length;for(var d=0;d<a;d++){var f=this._cv[d];if(f.Count>=_eg){g++;c+=f._ei}}if(g<3){return false}var e=c/a;var b=0;for(var d=0;d<a;d++){f=this._cv[d];b+=Math.abs(f._ei-e)}return b<=0.05*c};this._ce=function(e){var o=false;this.image=e;var n=qrcode.height;var k=qrcode.width;var a=Math.floor((3*n)/(4*_eh));if(a<_gf||o){a=_gf}var g=false;var d=new Array(5);for(var h=a-1;h<n&&!g;h+=a){d[0]=0;d[1]=0;d[2]=0;d[3]=0;d[4]=0;var b=0;for(var f=0;f<k;f++){if(e[f+h*qrcode.width]){if((b&1)==1){b++}d[b]++}else{if((b&1)==0){if(b==4){if(this._ao(d)){var c=this._cu(d,h,f);if(c){a=2;if(this._ge){g=this._cx()}else{var m=this._eq();if(m>d[2]){h+=m-d[2]-a;f=k-1}}}else{do{f++}while(f<k&&!e[f+h*qrcode.width]);f--}b=0;d[0]=0;d[1]=0;d[2]=0;d[3]=0;d[4]=0}else{d[0]=d[2];d[1]=d[3];d[2]=d[4];d[3]=1;d[4]=0;b=3}}else{d[++b]++}}else{d[b]++}}}if(this._ao(d)){var c=this._cu(d,h,k);if(c){a=d[0];if(this._ge){g=_cx()}}}}var l=this._ee();qrcode._er(l);return new _es(l)}}function _ai(c,a,b){this.x=c;this.y=a;this.count=1;this._aj=b;this.__defineGetter__("_ei",function(){return this._aj});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._ek=function(){this.count++};this._ev=function(f,e,d){if(Math.abs(e-this.y)<=f&&Math.abs(d-this.x)<=f){var g=Math.abs(f-this._aj);return g<=1||g/this._aj<=1}return false}}function _ak(g,c,b,f,a,e,d){this.image=g;this._cv=new Array();this.startX=c;this.startY=b;this.width=f;this.height=a;this._ef=e;this._al=new Array(0,0,0);this._am=d;this._an=function(i,h){return(h-i[2])-i[1]/2};this._ao=function(l){var k=this._ef;var h=k/2;for(var j=0;j<3;j++){if(Math.abs(k-l[j])>=h){return false}}return true};this._ap=function(h,q,l,o){var k=this.image;var p=qrcode.height;var j=this._al;j[0]=0;j[1]=0;j[2]=0;var n=h;while(n>=0&&k[q+n*qrcode.width]&&j[1]<=l){j[1]++;n--}if(n<0||j[1]>l){return NaN}while(n>=0&&!k[q+n*qrcode.width]&&j[0]<=l){j[0]++;n--}if(j[0]>l){return NaN}n=h+1;while(n<p&&k[q+n*qrcode.width]&&j[1]<=l){j[1]++;n++}if(n==p||j[1]>l){return NaN}while(n<p&&!k[q+n*qrcode.width]&&j[2]<=l){j[2]++;n++}if(j[2]>l){return NaN}var m=j[0]+j[1]+j[2];if(5*Math.abs(m-o)>=2*o){return NaN}return this._ao(j)?this._an(j,n):NaN};this._cu=function(l,o,n){var m=l[0]+l[1]+l[2];var t=this._an(l,n);var k=this._ap(o,Math.floor(t),2*l[1],m);if(!isNaN(k)){var s=(l[0]+l[1]+l[2])/3;var q=this._cv.length;for(var p=0;p<q;p++){var h=this._cv[p];if(h._ev(s,k,t)){return new _ai(t,k,s)}}var r=new _ai(t,k,s);this._cv.push(r);if(this._am!=null){this._am._ep(r)}}return null};this.find=function(){var p=this.startX;var s=this.height;var q=p+f;var r=b+(s>>1);var m=new Array(0,0,0);for(var k=0;k<s;k++){var o=r+((k&1)==0?((k+1)>>1):-((k+1)>>1));m[0]=0;m[1]=0;m[2]=0;var n=p;while(n<q&&!g[n+qrcode.width*o]){n++}var h=0;while(n<q){if(g[n+o*qrcode.width]){if(h==1){m[h]++}else{if(h==2){if(this._ao(m)){var l=this._cu(m,o,n);if(l!=null){return l}}m[0]=m[2];m[1]=1;m[2]=0;h=1}else{m[++h]++}}}else{if(h==1){h++}m[h]++}n++}if(this._ao(m)){var l=this._cu(m,o,q);if(l!=null){return l}}}if(!(this._cv.length==0)){return this._cv[0]}throw"Couldn't find enough alignment patterns"}}function QRCodeDataBlockReader(c,a,b){this._ed=0;this._cw=7;this.dataLength=0;this.blocks=c;this._en=b;if(a<=9){this.dataLengthMode=0}else{if(a>=10&&a<=26){this.dataLengthMode=1}else{if(a>=27&&a<=40){this.dataLengthMode=2}}}this._gd=function(f){var k=0;if(f<this._cw+1){var m=0;for(var e=0;e<f;e++){m+=(1<<e)}m<<=(this._cw-f+1);k=(this.blocks[this._ed]&m)>>(this._cw-f+1);this._cw-=f;return k}else{if(f<this._cw+1+8){var j=0;for(var e=0;e<this._cw+1;e++){j+=(1<<e)}k=(this.blocks[this._ed]&j)<<(f-(this._cw+1));this._ed++;k+=((this.blocks[this._ed])>>(8-(f-(this._cw+1))));this._cw=this._cw-f%8;if(this._cw<0){this._cw=8+this._cw}return k}else{if(f<this._cw+1+16){var j=0;var h=0;for(var e=0;e<this._cw+1;e++){j+=(1<<e)}var g=(this.blocks[this._ed]&j)<<(f-(this._cw+1));this._ed++;var d=this.blocks[this._ed]<<(f-(this._cw+1+8));this._ed++;for(var e=0;e<f-(this._cw+1+8);e++){h+=(1<<e)}h<<=8-(f-(this._cw+1+8));var l=(this.blocks[this._ed]&h)>>(8-(f-(this._cw+1+8)));k=g+d+l;this._cw=this._cw-(f-8)%8;if(this._cw<0){this._cw=8+this._cw}return k}else{return 0}}}};this.NextMode=function(){if((this._ed>this.blocks.length-this._en-2)){return 0}else{return this._gd(4)}};this.getDataLength=function(d){var e=0;while(true){if((d>>e)==1){break}e++}return this._gd(qrcode._eo[this.dataLengthMode][e])};this.getRomanAndFigureString=function(h){var f=h;var g=0;var j="";var d=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(f>1){g=this._gd(11);var i=Math.floor(g/45);var e=g%45;j+=d[i];j+=d[e];f-=2}else{if(f==1){g=this._gd(6);j+=d[g];f-=1}}}while(f>0);return j};this.getFigureString=function(f){var d=f;var e=0;var g="";do{if(d>=3){e=this._gd(10);if(e<100){g+="0"}if(e<10){g+="0"}d-=3}else{if(d==2){e=this._gd(7);if(e<10){g+="0"}d-=2}else{if(d==1){e=this._gd(4);d-=1}}}g+=e}while(d>0);return g};this.get8bitByteArray=function(g){var e=g;var f=0;var d=new Array();do{f=this._gd(8);d.push(f);e--}while(e>0);return d};this.getKanjiString=function(j){var g=j;var i=0;var h="";do{i=_gd(13);var e=i%192;var f=i/192;var k=(f<<8)+e;var d=0;if(k+33088<=40956){d=k+33088}else{d=k+49472}h+=String.fromCharCode(d);g--}while(g>0);return h};this.__defineGetter__("DataByte",function(){var h=new Array();var e=1;var f=2;var d=4;var o=8;do{var l=this.NextMode();if(l==0){if(h.length>0){break}else{throw"Empty data block"}}if(l!=e&&l!=f&&l!=d&&l!=o){throw"Invalid mode: "+l+" in (block:"+this._ed+" bit:"+this._cw+")"}var g=this.getDataLength(l);if(g<1){throw"Invalid data length: "+g}switch(l){case e:var m=this.getFigureString(g);var k=new Array(m.length);for(var i=0;i<m.length;i++){k[i]=m.charCodeAt(i)}h.push(k);break;case f:var m=this.getRomanAndFigureString(g);var k=new Array(m.length);for(var i=0;i<m.length;i++){k[i]=m.charCodeAt(i)}h.push(k);break;case d:var n=this.get8bitByteArray(g);h.push(n);break;case o:var m=this.getKanjiString(g);h.push(m);break}}while(true);return h})};

三、实现效果

前端html实现二维码识别相关推荐

前端学习--实现二维码识别功能
概述: 最近所做的毕设项目正好与之前很火的共享单车相关,共享单车应用中很关键的一个部分就是扫码用车,但我之前没有做过相关的模块,在参考网上相关实现的教程时发现,基本上所有的二维码识别模块都是通过客户端 ...
前端实现二维码识别wechat-qrcode-ocr-wasm
简介为了实现拍照上传的二维码识别.在vue项目中引入npm包(需要浏览器支持webassembly) npm install wechat-qrcode-ocr-wasm 安装后拷贝 /node_m ...
OpenCV（项目）二维码识别（二维码、条形码）
目录过程 1.获取图片中的二维码信息 2.获取视频中的二维码信息 3.检测出二维码框 4.显示数据 5.添加数据,判断二维码是否授权 5-1:.添加数据 5-2.读取文件信息,放入数组 5-3.判断 ...
android 图片二维码识别和保存(二)
续上一篇,开发图片二维码识别功能后,我们对功能进行性能分析内存占用显著提高了,不使用该功能内存占用大约是147M,使用这个功能多次以后,高达203M. 因此对功能进行研究,发现每次生成的图片没有即时的 ...
Atitit java 二维码识别图片识别
Atitit java 二维码识别图片识别 1.1. 解码1 1.2. 首先,我们先说一下二维码一共有40个尺寸.官方叫版本Version.1 1.3. 二维码的样例:2 1.4. 定位图案2 1. ...
基于机器视觉的Data Matrix二维码识别
基于机器视觉的Data Matrix二维码识别二维码识别,这个在视觉应用中占有很重要的比例,各种各样的二维码都有可能需要识别.常见的QR码.Data Matrix码.本方案是识别Data Matri ...
二维码识别超级解决方案，工业级别
二维码识别超级解决方案,工业级别参考文章: (1)二维码识别超级解决方案,工业级别 (2)https://www.cnblogs.com/y114113/p/6255462.html 备忘一下.
openmv和stm32串口通信完成二维码识别
openmv和stm32串口通信完成二维码识别文章目录前言一.所用的硬件: 二.openmv端 2.stm32端总结前言注:我只是个大一的小白,本文只完成基本功能,希望能帮助有困惑的人(我 ...
python zxing 识别条码_Python zxing 库解析（条形码二维码识别）
各种扫码软件最近要做个二维码识别的项目,查到二维码识别有好多开源的不开源的软件 Zbar 首先试了一下Zbar,python加载ZBar时各种报错.可能的原因是zbar的dll文件是32位的,而我系 ...

前端html实现二维码识别

一、html代码

二、 js文件

三、实现效果

前端html实现二维码识别相关推荐

最新文章

热门文章