本文引用analyticCode.js、llqrcode.js实现识别二维码功能

html代码:

<div class="box" id="analytic">
<img id="showImg" src="../../img/image/code.png" />
<p class="url-box" id="urlBox"></p>
</div>

javascript代码:

getUrl(document.getElementById('showImg'), 'img-url');
function getUrl(e, param) {
analyticCode.getUrl(param, e, function(url1, url2) {
e.nextElementSibling.innerHTML = url1;
e.previousElementSibling.src = url2;
});
}

analyticCode.js

!function(){"use strict";let getObjectURL=function(file){let url=null;if(window.createObjectURL!=undefined){url=window.createObjectURL(file);}else if(window.URL!=undefined){url=window.URL.createObjectURL(file);}else if(window.webkitURL!=undefined){url=window.webkitURL.createObjectURL(file);}
return url;}
window.analyticCode={getUrl:function(type,elem,fn){let url=null,src=null;if(type==='img-url'){url=elem.src;}else if(type==='file-url'&&elem.files.length>0){url=getObjectURL(elem.files[0]);}
qrcode.decode(url);qrcode.callback=function(imgMsg){fn(imgMsg,url);}}}}()

llqrcode.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})};

js 识别二维码的更多相关文章

  1. 使用JS调用手机本地摄像头或者相册图片识别二维码/条形码

    接着昨天的需求,不过这次不依赖微信,使用纯js唤醒手机本地摄像头或者选择手机相册图片,识别其中的二维码或者是条形码.昨天,我使用微信扫一扫识别,效果超棒的.不过如果依赖微信的话,又怎么实现呢,这里介绍 ...

  2. PHP 生成、识别二维码及安装相关扩展/工具

    2018-02-20 00:30:26  更新:推荐新扩展(极力推荐) 这篇文章里用的两个二维码扩展都有些问题和麻烦:phpqrcode(生成二维码)的源码有点小 bug: 而 php-zbarcod ...

  3. js生成二维码的jquery组件–qrcode

    js生成二维码的jquery组件–qrcode 2015/01/30 / 2508 VIEWS / JAVASCRIPT, JQUERY 有一些耗cpu的计算,完全可以在客户端上计算,比如生成二维码. ...

  4. Jquery生成二维码(微信中长按图片识别二维码功能)

    <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title> ...

  5. day111:MoFang:邀请好友流程&生成邀请好友二维码&第三方应用识别二维码&本地编译测试&记录邀请人信息

    目录 1.邀请业务逻辑流程图 2.邀请好友-前端 3.邀请好友-后端接口(生成二维码) 4.前端获取后端生成的二维码 5.前端长按页面,保存图片到相册 6.客户端通过第三方识别微信二维码,服务端提供对 ...

  6. Pyqt+QRcode 生成 识别 二维码

    1.生成二维码 python生成二维码是件很简单的事,使用第三方库Python QRCode就可生成二维码,我用Pyqt给QRcode打个壳 一.python-qrcode介绍 python-qrco ...

  7. python实现树莓派生成并识别二维码

    python实现树莓派生成并识别二维码 参考来源:http://blog.csdn.net/Burgess_Liu/article/details/40397803 设备及环境 树莓派2代 官方系统R ...

  8. HTML5实现扫描识别二维码/生成二维码

    扫描识别二维码 思路: 1. 操作摄像头,获取图片.HTML5 WEBRTC的navigator.getUserMedia方法去实时获取摄像头资源.  2. 利用canvas使用相关算法分析图片识别图 ...

  9. iOS--iOS7摄像头识别二维码功能

    iOS–iOS7摄像头识别二维码功能 属性介绍: AVFoundation 框架基于以下几个类实现图像捕捉 ,通过这些类可以访问来自相机设备的原始数据并控制它的组件. AVCaptureDevice ...

随机推荐

  1. js获取session对象

  2. jquery注册页面的判断及代码的优化

    今天主要负责完成注册页面的jquery代码的写入与优化,基本代码和登录页面差不多,复制修改一下代码就行了,主要区别在于多了一个重复密码与密码是否一致的判断,刚开始写出来的代码导致每个框的后面都追加重复 ...

  3. 杂记---主要关于PHP导出excel表格学习

    今天上午处理了一下WIN7系统的电脑前置话筒和耳机口无法使用的问题,主要现象是耳机插入后没声音,麦插入话筒说话对方也听不到,后置端口一切正常.刚开始判断肯定是设置的问题,于是用另一台电脑百度搜索“wi ...

  4. 关于redis内存分析,内存优化

    对于redis来说,什么是最重要的? 毋庸置疑,是内存. 一.reids 内存分析 redis内存使用情况:info memory 示例: 可以看到,当前节点内存碎片率为226893824/20952 ...

  5. python --文件读取数据

    读取整个文件: 首先创建一个文件,例如我创建了一个t x t文件了. 然后我想读取这个文件了,我首先将上面的这个文件保存在我即将要创建的Python的文件目录下, 即读取文件成功. 解析: 函数ope ...

  6. 【Effective Java】第二章-创建和销毁对象——1.考虑用静态工厂方法代替构造器

    静态工厂方法的优点: 可以赋予一个具有明确含义的名称 可以复用唯一实例,不必每次新建 可以返回原实例类型的子类对象 可以在返回泛型实例时更加简洁 缺点: 类如果不含有共有的或者受保护的构造器,就不能被 ...

  7. 如何发布自己用python写的py模块

    Python——怎么发布你的Python模块 我们在学习Python的时候,除了用pip安装一些模块之外,有时候会从网站下载安装包下来安装,我也想要把我自己编写的模块做成这样的安装包,该怎么办,如何发 ...

  8. ql的python学习之路-day2

    python中所有字符串操作 , )))), ))))#返回50个长度的字符串,不够左边就以0补充,可以用在十六进制补位(不常用)运行结果: My name is qinjiaxi---------- ...

  9. 前后端分离产生的跨域问题的解决方案之--jsonp、nginx代理、设置头信息等

    前言 在前后端没有分离的时候,前端开发要么是写静态页面,数据渲染后端来做,要么就是前端的页面和后端的代码刚开始的时候就合并在一起,每次后端代码更新了之后,前端也要更新一下代码,然后重启一下服务,还是比 ...

  10. elment新增el-select的全选功能

    不废话,效果如图 代码实现 平生不爱啰嗦,功能如上已实现.