js 识别二维码
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
- 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 ...
- 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 ...
- 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. ...
- 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> ...
- 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 ...
- 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 ...
- 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 ...
- 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 ...
- 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
- python学习之变量以及变量/标识符/关键字
Python成为一门易读.易维护,并且被大量用户所欢迎的.用途广泛的语言,代码简洁,功能强大,是使程序员能够专注于解决问题而不是研究语言本身.接下来我们先从它的语法开始学起 1.首先要懂得python ...
- Linux Charger IC 驱动移植总结
Linux Charger IC 驱动移植总结 文章目录 Linux Charger IC 驱动移植总结 1 设备树的基本知识 设备树的概念 设备树的基本结构 compatible属性 举个栗子 2 ...
- xml(4)
schema约束 dtd语法:<!ELEMENT 元素名称 约束> schema符合xml的语法,xml语句 一个xml中可以有多个schema,多个schema用名称空间区分(类似jav ...
- [hdu2119]二分图最小覆盖,最大匹配
题意:给一个01矩阵,每次可以选一行或一列,打掉上面所有的1,求打掉所有的1所需的最小次数. 思路:经典的模型了,二分图最小覆盖=最大匹配.所谓最小覆盖是指选最少的点关联所有的边.容易得到将行和列看成 ...
- angular前端框架简单小案例
一.angular表达式 <head> <meta charset="UTF-8"> <title>Title</title> &l ...
- java ->EL技术&JSTL技术
EL技术 EL 表达式概述 EL(Express Lanuage)表达式可以嵌入在jsp页面内部,减少jsp脚本的编写,EL出现的目的是要替代jsp页面中脚本(java代码)的编写. EL从域中取出数 ...
- 关于idea的一次踩坑记录-Auto build completed with errors
maven项目添加pom依赖后,一直不能正常导入所依赖的jar包,并且报错“ Auto build completed with errors”
- java十大排序
0.1 算法分类 十种常见排序算法可以分为两大类: 比较类排序:通过比较来决定元素间的相对次序,由于其时间复杂度不能突破O(nlogn),因此也称为非线性时间比较类排序. 非比较类排序:不通过比较来决 ...
- 类linux 系统上端口被占用
好几次遇到这问题,明明Ctrl+C退出了node,但是下次启动的时候总是会报错: listen EADDRINUSE :::80 之类的. 这时候可能是被占用,也可能是上次进程没有真的退出. ps - ...
- 关于RAID小结
独立硬盘冗余阵列(RAID, Redundant Array of Independent Disks),旧称廉价磁盘冗余阵列(Redundant Array of Inexpensive Disks ...