qr-scanner - npm Package Compare versions

Comparing version 1.1.1 to 1.2.0

package.json

 {
   "name": "qr-scanner",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "description": "A javascript QR scanner library",
-  "main": "qr-scanner.min.js",
-  "browser": "qr-scanner.min.js",
+  "main": "qr-scanner.umd.min.js",
   "module": "src/qr-scanner.js",
@@ -13,2 +12,4 @@ "types": "types/qr-scanner.d.ts",
     "qr-scanner.min.js.map",
+    "qr-scanner.umd.min.js",
+    "qr-scanner.umd.min.js.map",
     "qr-scanner-worker.min.js",
@@ -44,8 +45,9 @@ "qr-scanner-worker.min.js.map",
   "devDependencies": {
-    "@ampproject/rollup-plugin-closure-compiler": "^0.8.5",
-    "google-closure-compiler": "^20171112.0.0",
-    "jsqr-es6": "^1.2.0-2",
-    "rollup": "^1.1.2",
-    "rollup-plugin-sourcemaps": "^0.4.2"
+    "@ampproject/rollup-plugin-closure-compiler": "^0.26.0",
+    "acorn": "^7.3.1",
+    "google-closure-compiler": "^20200628.0.0",
+    "jsqr-es6": "^1.3.1-1",
+    "rollup": "^2.21.0",
+    "rollup-plugin-sourcemaps": "^0.6.2"
   }
 }

qr-scanner-worker.min.js

@@ -1,86 +0,87 @@
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-var g="attemptBoth"===e.inversionAttempts||"invertFirst"===e.inversionAttempts;var f=e.greyScaleWeights,h=e.canOverwriteImage,k=b*c;if(a.length!==4*k)throw Error("Malformed data passed to binarizer.");var m=0;if(h){var p=new Uint8ClampedArray(a.buffer,m,k);m+=k}p=new R(b,c,p);if(f.useIntegerApproximation)for(var n=0;n<c;n++)for(var l=0;l<b;l++){var q=4*(n*b+l);p.set(l,n,f.red*a[q]+f.green*a[q+1]+f.blue*a[q+2]+128>>8)}else for(n=0;n<c;n++)for(l=0;l<b;l++)q=4*(n*b+l),p.set(l,n,f.red*a[q]+f.green*a[q+
-1]+f.blue*a[q+2]);f=Math.ceil(b/8);n=Math.ceil(c/8);l=f*n;if(h){var r=new Uint8ClampedArray(a.buffer,m,l);m+=l}r=new R(f,n,r);for(l=0;l<n;l++)for(q=0;q<f;q++){var u=0,v=Infinity,t=0;for(let a=0;8>a;a++)for(let b=0;8>b;b++){let c=p.get(8*q+b,8*l+a);u+=c;v=Math.min(v,c);t=Math.max(t,c)}u/=Math.pow(8,2);24>=t-v&&(u=v/2,0<l&&0<q&&(t=(r.get(q,l-1)+2*r.get(q-1,l)+r.get(q-1,l-1))/4,v<t&&(u=t)));r.set(q,l,u)}h?(l=new Uint8ClampedArray(a.buffer,m,k),m+=k,l=new A(l,b)):l=A.createEmpty(b,c);q=null;g&&(h?(a=
-new Uint8ClampedArray(a.buffer,m,k),q=new A(a,b)):q=A.createEmpty(b,c));for(b=0;b<n;b++)for(a=0;a<f;a++){c=f-3;c=2>a?2:a>c?c:a;h=n-3;h=2>b?2:b>h?h:b;k=0;for(m=-2;2>=m;m++)for(v=-2;2>=v;v++)k+=r.get(c+m,h+v);c=k/25;for(h=0;8>h;h++)for(k=0;8>k;k++)m=8*a+h,v=8*b+k,t=p.get(m,v),l.set(m,v,t<=c),g&&q.set(m,v,!(t<=c))}g=g?{binarized:l,inverted:q}:{binarized:l};let {binarized:w,inverted:x}=g;(g=P(d?x:w))||"attemptBoth"!==e.inversionAttempts&&"invertFirst"!==e.inversionAttempts||(g=P(d?w:x));return g}class A{static createEmpty(a,
-b){return new A(new Uint8ClampedArray(a*b),a)}constructor(a,b){this.width=b;this.height=a.length/b;this.data=a}get(a,b){return 0>a||a>=this.width||0>b||b>=this.height?!1:!!this.data[b*this.width+a]}set(a,b,c){this.data[b*this.width+a]=c?1:0}setRegion(a,b,c,d,e){for(let g=b;g<b+d;g++)for(let b=a;b<a+c;b++)this.set(b,g,!!e)}}class R{constructor(a,b,c){this.width=a;a*=b;if(c&&c.length!==a)throw Error("Wrong buffer size");this.data=c||new Uint8ClampedArray(a)}get(a,b){return this.data[b*this.width+a]}set(a,
-b,c){this.data[b*this.width+a]=c}}class U{constructor(a){this.bitOffset=this.byteOffset=0;this.bytes=a}readBits(a){if(1>a||32<a||a>this.available())throw Error("Cannot read "+a.toString()+" bits");var b=0;if(0<this.bitOffset){b=8-this.bitOffset;var c=a<b?a:b;b-=c;b=(this.bytes[this.byteOffset]&255>>8-c<<b)>>b;a-=c;this.bitOffset+=c;8===this.bitOffset&&(this.bitOffset=0,this.byteOffset++)}if(0<a){for(;8<=a;)b=b<<8|this.bytes[this.byteOffset]&255,this.byteOffset++,a-=8;0<a&&(c=8-a,b=b<<a|(this.bytes[this.byteOffset]&
-255>>c<<c)>>c,this.bitOffset+=a)}return b}available(){return 8*(this.bytes.length-this.byteOffset)-this.bitOffset}}var u;(function(a){a.Numeric="numeric";a.Alphanumeric="alphanumeric";a.Byte="byte";a.Kanji="kanji";a.ECI="eci"})(u||(u={}));var y;(function(a){a[a.Terminator=0]="Terminator";a[a.Numeric=1]="Numeric";a[a.Alphanumeric=2]="Alphanumeric";a[a.Byte=4]="Byte";a[a.Kanji=8]="Kanji";a[a.ECI=7]="ECI"})(y||(y={}));let B="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:".split("");class w{constructor(a,
-b){if(0===b.length)throw Error("No coefficients.");this.field=a;let c=b.length;if(1<c&&0===b[0]){let d=1;for(;d<c&&0===b[d];)d++;if(d===c)this.coefficients=a.zero.coefficients;else for(this.coefficients=new Uint8ClampedArray(c-d),a=0;a<this.coefficients.length;a++)this.coefficients[a]=b[d+a]}else this.coefficients=b}degree(){return this.coefficients.length-1}isZero(){return 0===this.coefficients[0]}getCoefficient(a){return this.coefficients[this.coefficients.length-1-a]}addOrSubtract(a){if(this.isZero())return a;
-if(a.isZero())return this;let b=this.coefficients;a=a.coefficients;b.length>a.length&&([b,a]=[a,b]);let c=new Uint8ClampedArray(a.length),d=a.length-b.length;for(var e=0;e<d;e++)c[e]=a[e];for(e=d;e<a.length;e++)c[e]=b[e-d]^a[e];return new w(this.field,c)}multiply(a){if(0===a)return this.field.zero;if(1===a)return this;let b=this.coefficients.length,c=new Uint8ClampedArray(b);for(let d=0;d<b;d++)c[d]=this.field.multiply(this.coefficients[d],a);return new w(this.field,c)}multiplyPoly(a){if(this.isZero()||
-a.isZero())return this.field.zero;let b=this.coefficients,c=b.length;a=a.coefficients;let d=a.length,e=new Uint8ClampedArray(c+d-1);for(let h=0;h<c;h++){let c=b[h];for(let b=0;b<d;b++){var g=h+b,f=this.field.multiply(c,a[b]);e[g]=e[h+b]^f}}return new w(this.field,e)}multiplyByMonomial(a,b){if(0>a)throw Error("Invalid degree less than 0");if(0===b)return this.field.zero;let c=this.coefficients.length;a=new Uint8ClampedArray(c+a);for(let d=0;d<c;d++)a[d]=this.field.multiply(this.coefficients[d],b);
-return new w(this.field,a)}evaluateAt(a){let b=0;if(0===a)return this.getCoefficient(0);let c=this.coefficients.length;if(1===a)return this.coefficients.forEach((a)=>{b^=a}),b;b=this.coefficients[0];for(let d=1;d<c;d++)b=J(this.field.multiply(a,b),this.coefficients[d]);return b}}class X{constructor(a,b,c){this.primitive=a;this.size=b;this.generatorBase=c;this.expTable=Array(this.size);this.logTable=Array(this.size);a=1;for(b=0;b<this.size;b++)this.expTable[b]=a,a*=2,a>=this.size&&(a=(a^this.primitive)&
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-{infoBits:null,versionNumber:2,alignmentPatternCenters:[6,18],errorCorrectionLevels:[{ecCodewordsPerBlock:10,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:34}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:28}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:16}]}]},{infoBits:null,versionNumber:3,alignmentPatternCenters:[6,22],errorCorrectionLevels:[{ecCodewordsPerBlock:15,ecBlocks:[{numBlocks:1,
-dataCodewordsPerBlock:55}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:13}]}]},{infoBits:null,versionNumber:4,alignmentPatternCenters:[6,26],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:80}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:32}]},{ecCodewordsPerBlock:26,
-ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:9}]}]},{infoBits:null,versionNumber:5,alignmentPatternCenters:[6,30],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:43}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]},{ecCodewordsPerBlock:22,
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-alignmentPatternCenters:[6,22,38],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:78}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:31}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:13},{numBlocks:1,dataCodewordsPerBlock:14}]}]},{infoBits:34236,versionNumber:8,alignmentPatternCenters:[6,24,42],
-errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:97}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:38},{numBlocks:2,dataCodewordsPerBlock:39}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:18},{numBlocks:2,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:14},{numBlocks:2,dataCodewordsPerBlock:15}]}]},{infoBits:39577,versionNumber:9,alignmentPatternCenters:[6,
-26,46],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:12},{numBlocks:4,dataCodewordsPerBlock:13}]}]},{infoBits:42195,versionNumber:10,alignmentPatternCenters:[6,
-28,50],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68},{numBlocks:2,dataCodewordsPerBlock:69}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:43},{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]}]},{infoBits:48118,
-versionNumber:11,alignmentPatternCenters:[6,30,54],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:81}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:50},{numBlocks:4,dataCodewordsPerBlock:51}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:22},{numBlocks:4,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:12},{numBlocks:8,dataCodewordsPerBlock:13}]}]},{infoBits:51042,
-versionNumber:12,alignmentPatternCenters:[6,32,58],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:92},{numBlocks:2,dataCodewordsPerBlock:93}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:20},{numBlocks:6,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:14},{numBlocks:4,
-dataCodewordsPerBlock:15}]}]},{infoBits:55367,versionNumber:13,alignmentPatternCenters:[6,34,62],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:107}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:37},{numBlocks:1,dataCodewordsPerBlock:38}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:20},{numBlocks:4,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:11},{numBlocks:4,
-dataCodewordsPerBlock:12}]}]},{infoBits:58893,versionNumber:14,alignmentPatternCenters:[6,26,46,66],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:115},{numBlocks:1,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:40},{numBlocks:5,dataCodewordsPerBlock:41}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:16},{numBlocks:5,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,
-dataCodewordsPerBlock:12},{numBlocks:5,dataCodewordsPerBlock:13}]}]},{infoBits:63784,versionNumber:15,alignmentPatternCenters:[6,26,48,70],errorCorrectionLevels:[{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:87},{numBlocks:1,dataCodewordsPerBlock:88}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:41},{numBlocks:5,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},
-{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:7,dataCodewordsPerBlock:13}]}]},{infoBits:68472,versionNumber:16,alignmentPatternCenters:[6,26,50,74],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:98},{numBlocks:1,dataCodewordsPerBlock:99}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:19},
-{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:70749,versionNumber:17,alignmentPatternCenters:[6,30,54,78],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:46},{numBlocks:1,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,
-ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22},{numBlocks:15,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:17,dataCodewordsPerBlock:15}]}]},{infoBits:76311,versionNumber:18,alignmentPatternCenters:[6,30,56,82],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:120},{numBlocks:1,dataCodewordsPerBlock:121}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:43},{numBlocks:4,
-dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:1,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:19,dataCodewordsPerBlock:15}]}]},{infoBits:79154,versionNumber:19,alignmentPatternCenters:[6,30,58,86],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:113},{numBlocks:4,dataCodewordsPerBlock:114}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,
-dataCodewordsPerBlock:44},{numBlocks:11,dataCodewordsPerBlock:45}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:21},{numBlocks:4,dataCodewordsPerBlock:22}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:13},{numBlocks:16,dataCodewordsPerBlock:14}]}]},{infoBits:84390,versionNumber:20,alignmentPatternCenters:[6,34,62,90],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},
-{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:41},{numBlocks:13,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},{numBlocks:5,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:15},{numBlocks:10,dataCodewordsPerBlock:16}]}]},{infoBits:87683,versionNumber:21,alignmentPatternCenters:[6,28,50,72,94],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:116},
-{numBlocks:4,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:16},{numBlocks:6,dataCodewordsPerBlock:17}]}]},{infoBits:92361,versionNumber:22,alignmentPatternCenters:[6,26,50,74,98],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:111},
-{numBlocks:7,dataCodewordsPerBlock:112}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:13}]}]},{infoBits:96236,versionNumber:23,alignmentPatternCenters:[6,30,54,74,102],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:121},{numBlocks:5,dataCodewordsPerBlock:122}]},
-{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:47},{numBlocks:14,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:16,dataCodewordsPerBlock:15},{numBlocks:14,dataCodewordsPerBlock:16}]}]},{infoBits:102084,versionNumber:24,alignmentPatternCenters:[6,28,54,80,106],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:117},
-{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:45},{numBlocks:14,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:30,dataCodewordsPerBlock:16},{numBlocks:2,dataCodewordsPerBlock:17}]}]},{infoBits:102881,versionNumber:25,alignmentPatternCenters:[6,32,58,84,110],errorCorrectionLevels:[{ecCodewordsPerBlock:26,
-ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:106},{numBlocks:4,dataCodewordsPerBlock:107}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:47},{numBlocks:13,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},{numBlocks:22,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:110507,versionNumber:26,alignmentPatternCenters:[6,
-30,58,86,114],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:114},{numBlocks:2,dataCodewordsPerBlock:115}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:46},{numBlocks:4,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:28,dataCodewordsPerBlock:22},{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:33,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]}]},
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+dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:15}]}]},{infoBits:31892,versionNumber:7,alignmentPatternCenters:[6,22,38],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:78}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:31}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,
+dataCodewordsPerBlock:13},{numBlocks:1,dataCodewordsPerBlock:14}]}]},{infoBits:34236,versionNumber:8,alignmentPatternCenters:[6,24,42],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:97}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:38},{numBlocks:2,dataCodewordsPerBlock:39}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:18},{numBlocks:2,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,
+dataCodewordsPerBlock:14},{numBlocks:2,dataCodewordsPerBlock:15}]}]},{infoBits:39577,versionNumber:9,alignmentPatternCenters:[6,26,46],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,
+dataCodewordsPerBlock:12},{numBlocks:4,dataCodewordsPerBlock:13}]}]},{infoBits:42195,versionNumber:10,alignmentPatternCenters:[6,28,50],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68},{numBlocks:2,dataCodewordsPerBlock:69}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:43},{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},
+{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]}]},{infoBits:48118,versionNumber:11,alignmentPatternCenters:[6,30,54],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:81}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:50},{numBlocks:4,dataCodewordsPerBlock:51}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:22},{numBlocks:4,dataCodewordsPerBlock:23}]},
+{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:12},{numBlocks:8,dataCodewordsPerBlock:13}]}]},{infoBits:51042,versionNumber:12,alignmentPatternCenters:[6,32,58],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:92},{numBlocks:2,dataCodewordsPerBlock:93}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:20},
+{numBlocks:6,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]}]},{infoBits:55367,versionNumber:13,alignmentPatternCenters:[6,34,62],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:107}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:37},{numBlocks:1,dataCodewordsPerBlock:38}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:20},
+{numBlocks:4,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:11},{numBlocks:4,dataCodewordsPerBlock:12}]}]},{infoBits:58893,versionNumber:14,alignmentPatternCenters:[6,26,46,66],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:115},{numBlocks:1,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:40},{numBlocks:5,dataCodewordsPerBlock:41}]},{ecCodewordsPerBlock:20,
+ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:16},{numBlocks:5,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:5,dataCodewordsPerBlock:13}]}]},{infoBits:63784,versionNumber:15,alignmentPatternCenters:[6,26,48,70],errorCorrectionLevels:[{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:87},{numBlocks:1,dataCodewordsPerBlock:88}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:41},{numBlocks:5,
+dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:7,dataCodewordsPerBlock:13}]}]},{infoBits:68472,versionNumber:16,alignmentPatternCenters:[6,26,50,74],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:98},{numBlocks:1,dataCodewordsPerBlock:99}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,
+dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:70749,versionNumber:17,alignmentPatternCenters:[6,30,54,78],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},
+{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:46},{numBlocks:1,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22},{numBlocks:15,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:17,dataCodewordsPerBlock:15}]}]},{infoBits:76311,versionNumber:18,alignmentPatternCenters:[6,30,56,82],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:120},
+{numBlocks:1,dataCodewordsPerBlock:121}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:43},{numBlocks:4,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:1,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:19,dataCodewordsPerBlock:15}]}]},{infoBits:79154,versionNumber:19,alignmentPatternCenters:[6,30,58,86],errorCorrectionLevels:[{ecCodewordsPerBlock:28,
+ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:113},{numBlocks:4,dataCodewordsPerBlock:114}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:44},{numBlocks:11,dataCodewordsPerBlock:45}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:21},{numBlocks:4,dataCodewordsPerBlock:22}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:13},{numBlocks:16,dataCodewordsPerBlock:14}]}]},{infoBits:84390,versionNumber:20,alignmentPatternCenters:[6,34,
+62,90],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:41},{numBlocks:13,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},{numBlocks:5,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:15},{numBlocks:10,dataCodewordsPerBlock:16}]}]},{infoBits:87683,
+versionNumber:21,alignmentPatternCenters:[6,28,50,72,94],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:116},{numBlocks:4,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:16},{numBlocks:6,dataCodewordsPerBlock:17}]}]},
+{infoBits:92361,versionNumber:22,alignmentPatternCenters:[6,26,50,74,98],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:111},{numBlocks:7,dataCodewordsPerBlock:112}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:13}]}]},{infoBits:96236,versionNumber:23,
+alignmentPatternCenters:[6,30,54,74,102],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:121},{numBlocks:5,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:47},{numBlocks:14,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:16,dataCodewordsPerBlock:15},{numBlocks:14,dataCodewordsPerBlock:16}]}]},
+{infoBits:102084,versionNumber:24,alignmentPatternCenters:[6,28,54,80,106],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:117},{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:45},{numBlocks:14,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:30,dataCodewordsPerBlock:16},
+{numBlocks:2,dataCodewordsPerBlock:17}]}]},{infoBits:102881,versionNumber:25,alignmentPatternCenters:[6,32,58,84,110],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:106},{numBlocks:4,dataCodewordsPerBlock:107}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:47},{numBlocks:13,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},{numBlocks:22,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,
+ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:110507,versionNumber:26,alignmentPatternCenters:[6,30,58,86,114],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:114},{numBlocks:2,dataCodewordsPerBlock:115}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:46},{numBlocks:4,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:28,dataCodewordsPerBlock:22},{numBlocks:6,
+dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:33,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]}]},{infoBits:110734,versionNumber:27,alignmentPatternCenters:[6,34,62,90,118],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:122},{numBlocks:4,dataCodewordsPerBlock:123}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:8,
+dataCodewordsPerBlock:23},{numBlocks:26,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:15},{numBlocks:28,dataCodewordsPerBlock:16}]}]},{infoBits:117786,versionNumber:28,alignmentPatternCenters:[6,26,50,74,98,122],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:117},{numBlocks:10,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:45},{numBlocks:23,dataCodewordsPerBlock:46}]},
+{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:24},{numBlocks:31,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:15},{numBlocks:31,dataCodewordsPerBlock:16}]}]},{infoBits:119615,versionNumber:29,alignmentPatternCenters:[6,30,54,78,102,126],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:116},{numBlocks:7,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:21,dataCodewordsPerBlock:45},
+{numBlocks:7,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:23},{numBlocks:37,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:15},{numBlocks:26,dataCodewordsPerBlock:16}]}]},{infoBits:126325,versionNumber:30,alignmentPatternCenters:[6,26,52,78,104,130],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:115},{numBlocks:10,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,
+ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:47},{numBlocks:10,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},{numBlocks:25,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:23,dataCodewordsPerBlock:15},{numBlocks:25,dataCodewordsPerBlock:16}]}]},{infoBits:127568,versionNumber:31,alignmentPatternCenters:[6,30,56,82,108,134],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:115},
+{numBlocks:3,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:46},{numBlocks:29,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:42,dataCodewordsPerBlock:24},{numBlocks:1,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:23,dataCodewordsPerBlock:15},{numBlocks:28,dataCodewordsPerBlock:16}]}]},{infoBits:133589,versionNumber:32,alignmentPatternCenters:[6,34,60,86,112,138],errorCorrectionLevels:[{ecCodewordsPerBlock:30,
+ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:115}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:46},{numBlocks:23,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:24},{numBlocks:35,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:15},{numBlocks:35,dataCodewordsPerBlock:16}]}]},{infoBits:136944,versionNumber:33,alignmentPatternCenters:[6,30,58,86,114,142],errorCorrectionLevels:[{ecCodewordsPerBlock:30,
+ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:115},{numBlocks:1,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:14,dataCodewordsPerBlock:46},{numBlocks:21,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:29,dataCodewordsPerBlock:24},{numBlocks:19,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:15},{numBlocks:46,dataCodewordsPerBlock:16}]}]},{infoBits:141498,versionNumber:34,alignmentPatternCenters:[6,
+34,62,90,118,146],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:115},{numBlocks:6,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:14,dataCodewordsPerBlock:46},{numBlocks:23,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:44,dataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:59,dataCodewordsPerBlock:16},{numBlocks:1,dataCodewordsPerBlock:17}]}]},
+{infoBits:145311,versionNumber:35,alignmentPatternCenters:[6,30,54,78,102,126,150],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:121},{numBlocks:7,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:47},{numBlocks:26,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:39,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:22,
+dataCodewordsPerBlock:15},{numBlocks:41,dataCodewordsPerBlock:16}]}]},{infoBits:150283,versionNumber:36,alignmentPatternCenters:[6,24,50,76,102,128,154],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:121},{numBlocks:14,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:47},{numBlocks:34,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:46,dataCodewordsPerBlock:24},{numBlocks:10,dataCodewordsPerBlock:25}]},
+{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:15},{numBlocks:64,dataCodewordsPerBlock:16}]}]},{infoBits:152622,versionNumber:37,alignmentPatternCenters:[6,28,54,80,106,132,158],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:122},{numBlocks:4,dataCodewordsPerBlock:123}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:29,dataCodewordsPerBlock:46},{numBlocks:14,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:49,
+dataCodewordsPerBlock:24},{numBlocks:10,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:24,dataCodewordsPerBlock:15},{numBlocks:46,dataCodewordsPerBlock:16}]}]},{infoBits:158308,versionNumber:38,alignmentPatternCenters:[6,32,58,84,110,136,162],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:122},{numBlocks:18,dataCodewordsPerBlock:123}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:46},{numBlocks:32,dataCodewordsPerBlock:47}]},
+{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:48,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:42,dataCodewordsPerBlock:15},{numBlocks:32,dataCodewordsPerBlock:16}]}]},{infoBits:161089,versionNumber:39,alignmentPatternCenters:[6,26,54,82,110,138,166],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:20,dataCodewordsPerBlock:117},{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:40,
+dataCodewordsPerBlock:47},{numBlocks:7,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:43,dataCodewordsPerBlock:24},{numBlocks:22,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:15},{numBlocks:67,dataCodewordsPerBlock:16}]}]},{infoBits:167017,versionNumber:40,alignmentPatternCenters:[6,30,58,86,114,142,170],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:118},{numBlocks:6,dataCodewordsPerBlock:119}]},
+{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:18,dataCodewordsPerBlock:47},{numBlocks:31,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:24},{numBlocks:34,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:20,dataCodewordsPerBlock:15},{numBlocks:61,dataCodewordsPerBlock:16}]}]}],da=[{bits:21522,formatInfo:{errorCorrectionLevel:1,dataMask:0}},{bits:20773,formatInfo:{errorCorrectionLevel:1,dataMask:1}},{bits:24188,formatInfo:{errorCorrectionLevel:1,
+dataMask:2}},{bits:23371,formatInfo:{errorCorrectionLevel:1,dataMask:3}},{bits:17913,formatInfo:{errorCorrectionLevel:1,dataMask:4}},{bits:16590,formatInfo:{errorCorrectionLevel:1,dataMask:5}},{bits:20375,formatInfo:{errorCorrectionLevel:1,dataMask:6}},{bits:19104,formatInfo:{errorCorrectionLevel:1,dataMask:7}},{bits:30660,formatInfo:{errorCorrectionLevel:0,dataMask:0}},{bits:29427,formatInfo:{errorCorrectionLevel:0,dataMask:1}},{bits:32170,formatInfo:{errorCorrectionLevel:0,dataMask:2}},{bits:30877,
+formatInfo:{errorCorrectionLevel:0,dataMask:3}},{bits:26159,formatInfo:{errorCorrectionLevel:0,dataMask:4}},{bits:25368,formatInfo:{errorCorrectionLevel:0,dataMask:5}},{bits:27713,formatInfo:{errorCorrectionLevel:0,dataMask:6}},{bits:26998,formatInfo:{errorCorrectionLevel:0,dataMask:7}},{bits:5769,formatInfo:{errorCorrectionLevel:3,dataMask:0}},{bits:5054,formatInfo:{errorCorrectionLevel:3,dataMask:1}},{bits:7399,formatInfo:{errorCorrectionLevel:3,dataMask:2}},{bits:6608,formatInfo:{errorCorrectionLevel:3,
+dataMask:3}},{bits:1890,formatInfo:{errorCorrectionLevel:3,dataMask:4}},{bits:597,formatInfo:{errorCorrectionLevel:3,dataMask:5}},{bits:3340,formatInfo:{errorCorrectionLevel:3,dataMask:6}},{bits:2107,formatInfo:{errorCorrectionLevel:3,dataMask:7}},{bits:13663,formatInfo:{errorCorrectionLevel:2,dataMask:0}},{bits:12392,formatInfo:{errorCorrectionLevel:2,dataMask:1}},{bits:16177,formatInfo:{errorCorrectionLevel:2,dataMask:2}},{bits:14854,formatInfo:{errorCorrectionLevel:2,dataMask:3}},{bits:9396,formatInfo:{errorCorrectionLevel:2,
+dataMask:4}},{bits:8579,formatInfo:{errorCorrectionLevel:2,dataMask:5}},{bits:11994,formatInfo:{errorCorrectionLevel:2,dataMask:6}},{bits:11245,formatInfo:{errorCorrectionLevel:2,dataMask:7}}],aa=[a=>0===(a.y+a.x)%2,a=>0===a.y%2,a=>0===a.x%3,a=>0===(a.y+a.x)%3,a=>0===(Math.floor(a.y/2)+Math.floor(a.x/3))%2,a=>0===a.x*a.y%2+a.x*a.y%3,a=>0===(a.y*a.x%2+a.y*a.x%3)%2,a=>0===((a.y+a.x)%2+a.y*a.x%3)%2],x=(a,b)=>Math.sqrt(Math.pow(b.x-a.x,2)+Math.pow(b.y-a.y,2)),la={inversionAttempts:"attemptBoth",greyScaleWeights:{red:.2126,
+green:.7152,blue:.0722,useIntegerApproximation:!1},canOverwriteImage:!0};I.default=I;let G="dontInvert",D={red:77,green:150,blue:29,useIntegerApproximation:!0};self.onmessage=a=>{let b=a.data.data;switch(a.data.type){case "decode":a=I(b.data,b.width,b.height,{inversionAttempts:G,greyScaleWeights:D});self.postMessage({type:"qrResult",data:a?a.data:null});break;case "grayscaleWeights":D.red=b.red;D.green=b.green;D.blue=b.blue;D.useIntegerApproximation=b.useIntegerApproximation;break;case "inversionMode":switch(b){case "original":G=
+"dontInvert";break;case "invert":G="onlyInvert";break;case "both":G="attemptBoth";break;default:throw Error("Invalid inversion mode");}break;case "close":self.close()}}})()
 //# sourceMappingURL=qr-scanner-worker.min.js.map

qr-scanner.min.js

@@ -1,12 +0,16 @@
-class e{static hasCamera(){return navigator.mediaDevices.enumerateDevices().then((a)=>a.some((a)=>"videoinput"===a.kind)).catch(()=>!1)}constructor(a,c,b=e.DEFAULT_CANVAS_SIZE){this.$video=a;this.$canvas=document.createElement("canvas");this._onDecode=c;this._paused=this._active=!1;this.$canvas.width=b;this.$canvas.height=b;this._sourceRect={x:0,y:0,width:b,height:b};this._onCanPlay=this._onCanPlay.bind(this);this._onPlay=this._onPlay.bind(this);this._onVisibilityChange=this._onVisibilityChange.bind(this);
-this.$video.addEventListener("canplay",this._onCanPlay);this.$video.addEventListener("play",this._onPlay);document.addEventListener("visibilitychange",this._onVisibilityChange);this._qrWorker=new Worker(e.WORKER_PATH)}destroy(){this.$video.removeEventListener("canplay",this._onCanPlay);this.$video.removeEventListener("play",this._onPlay);document.removeEventListener("visibilitychange",this._onVisibilityChange);this.stop();this._qrWorker.postMessage({type:"close"})}start(){if(this._active&&!this._paused)return Promise.resolve();
-"https:"!==window.location.protocol&&console.warn("The camera stream is only accessible if the page is transferred via https.");this._active=!0;this._paused=!1;if(document.hidden)return Promise.resolve();clearTimeout(this._offTimeout);this._offTimeout=null;if(this.$video.srcObject)return this.$video.play(),Promise.resolve();let a="environment";return this._getCameraStream("environment",!0).catch(()=>{a="user";return this._getCameraStream()}).then((c)=>{this.$video.srcObject=c;this._setVideoMirror(a)}).catch((a)=>
-{this._active=!1;throw a;})}stop(){this.pause();this._active=!1}pause(){this._paused=!0;this._active&&(this.$video.pause(),this._offTimeout||(this._offTimeout=setTimeout(()=>{let a=this.$video.srcObject&&this.$video.srcObject.getTracks()[0];a&&(a.stop(),this._offTimeout=this.$video.srcObject=null)},300)))}static scanImage(a,c=null,b=null,d=null,f=!1,g=!1){let h=!1,l=new Promise((l,g)=>{b||(b=new Worker(e.WORKER_PATH),h=!0,b.postMessage({type:"inversionMode",data:"both"}));let n,m,k;m=(a)=>{"qrResult"===
-a.data.type&&(b.removeEventListener("message",m),b.removeEventListener("error",k),clearTimeout(n),null!==a.data.data?l(a.data.data):g("QR code not found."))};k=(a)=>{b.removeEventListener("message",m);b.removeEventListener("error",k);clearTimeout(n);g("Scanner error: "+(a?a.message||a:"Unknown Error"))};b.addEventListener("message",m);b.addEventListener("error",k);n=setTimeout(()=>k("timeout"),3E3);e._loadImage(a).then((a)=>{a=e._getImageData(a,c,d,f);b.postMessage({type:"decode",data:a},[a.data.buffer])}).catch(k)});
-c&&g&&(l=l.catch(()=>e.scanImage(a,null,b,d,f)));return l=l.finally(()=>{h&&b.postMessage({type:"close"})})}setGrayscaleWeights(a,c,b,d=!0){this._qrWorker.postMessage({type:"grayscaleWeights",data:{red:a,green:c,blue:b,useIntegerApproximation:d}})}setInversionMode(a){this._qrWorker.postMessage({type:"inversionMode",data:a})}_onCanPlay(){this._updateSourceRect();this.$video.play()}_onPlay(){this._updateSourceRect();this._scanFrame()}_onVisibilityChange(){document.hidden?this.pause():this._active&&
-this.start()}_updateSourceRect(){let a=Math.round(2/3*Math.min(this.$video.videoWidth,this.$video.videoHeight));this._sourceRect.width=this._sourceRect.height=a;this._sourceRect.x=(this.$video.videoWidth-a)/2;this._sourceRect.y=(this.$video.videoHeight-a)/2}_scanFrame(){if(!this._active||this.$video.paused||this.$video.ended)return!1;requestAnimationFrame(()=>{e.scanImage(this.$video,this._sourceRect,this._qrWorker,this.$canvas,!0).then(this._onDecode,(a)=>{this._active&&"QR code not found."!==a&&
-console.error(a)}).then(()=>this._scanFrame())})}_getCameraStream(a,c=!1){let b=[{width:{min:1024}},{width:{min:768}},{}];a&&(c&&(a={exact:a}),b.forEach((b)=>b.facingMode=a));return this._getMatchingCameraStream(b)}_getMatchingCameraStream(a){return 0===a.length?Promise.reject("Camera not found."):navigator.mediaDevices.getUserMedia({video:a.shift()}).catch(()=>this._getMatchingCameraStream(a))}_setVideoMirror(a){this.$video.style.transform="scaleX("+("user"===a?-1:1)+")"}static _getImageData(a,c=
-null,b=null,d=!1){b=b||document.createElement("canvas");let f=c&&c.x?c.x:0,g=c&&c.y?c.y:0,h=c&&c.width?c.width:a.width||a.videoWidth;c=c&&c.height?c.height:a.height||a.videoHeight;d||b.width===h&&b.height===c||(b.width=h,b.height=c);d=b.getContext("2d",{alpha:!1});d.imageSmoothingEnabled=!1;d.drawImage(a,f,g,h,c,0,0,b.width,b.height);return d.getImageData(0,0,b.width,b.height)}static _loadImage(a){if(a instanceof HTMLCanvasElement||a instanceof HTMLVideoElement||window.ImageBitmap&&a instanceof window.ImageBitmap||
-window.OffscreenCanvas&&a instanceof window.OffscreenCanvas)return Promise.resolve(a);if(a instanceof Image)return e._awaitImageLoad(a).then(()=>a);if(a instanceof File||a instanceof URL||"string"===typeof a){let c=new Image;c.src=a instanceof File?URL.createObjectURL(a):a;return e._awaitImageLoad(c).then(()=>{a instanceof File&&URL.revokeObjectURL(c.src);return c})}return Promise.reject("Unsupported image type.")}static _awaitImageLoad(a){return new Promise((c,b)=>{if(a.complete&&0!==a.naturalWidth)c();
-else{let d,f;d=()=>{a.removeEventListener("load",d);a.removeEventListener("error",f);c()};f=()=>{a.removeEventListener("load",d);a.removeEventListener("error",f);b("Image load error")};a.addEventListener("load",d);a.addEventListener("error",f)}})}}e.DEFAULT_CANVAS_SIZE=400;e.WORKER_PATH="qr-scanner-worker.min.js";export default e;
+class e{static hasCamera(){return navigator.mediaDevices?navigator.mediaDevices.enumerateDevices().then(a=>a.some(a=>"videoinput"===a.kind)).catch(()=>!1):Promise.resolve(!1)}constructor(a,b,c=this._onDecodeError.bind(this),d=e.DEFAULT_CANVAS_SIZE,f="environment"){this.$video=a;this.$canvas=document.createElement("canvas");this._onDecode=b;this._preferredFacingMode=f;this._flashOn=this._paused=this._active=!1;"number"===typeof c?(d=c,console.warn("You're using a deprecated version of the QrScanner constructor which will be removed in the future")):
+this._onDecodeError=c;this.$canvas.width=d;this.$canvas.height=d;this._sourceRect={x:0,y:0,width:d,height:d};this._updateSourceRect=this._updateSourceRect.bind(this);this._onPlay=this._onPlay.bind(this);this._onVisibilityChange=this._onVisibilityChange.bind(this);this.$video.playsInline=!0;this.$video.muted=!0;this.$video.disablePictureInPicture=!0;this.$video.addEventListener("loadedmetadata",this._updateSourceRect);this.$video.addEventListener("play",this._onPlay);document.addEventListener("visibilitychange",
+this._onVisibilityChange);this._qrEnginePromise=e.createQrEngine()}hasFlash(){if(!("ImageCapture"in window))return Promise.resolve(!1);let a=this.$video.srcObject?this.$video.srcObject.getVideoTracks()[0]:null;return a?(new ImageCapture(a)).getPhotoCapabilities().then(a=>a.fillLightMode.includes("flash")).catch(a=>{console.warn(a);return!1}):Promise.reject("Camera not started or not available")}isFlashOn(){return this._flashOn}toggleFlash(){return this._setFlash(!this._flashOn)}turnFlashOff(){return this._setFlash(!1)}turnFlashOn(){return this._setFlash(!0)}destroy(){this.$video.removeEventListener("loadedmetadata",
+this._updateSourceRect);this.$video.removeEventListener("play",this._onPlay);document.removeEventListener("visibilitychange",this._onVisibilityChange);this.stop();e._postWorkerMessage(this._qrEnginePromise,"close")}start(){if(this._active&&!this._paused)return Promise.resolve();"https:"!==window.location.protocol&&console.warn("The camera stream is only accessible if the page is transferred via https.");this._active=!0;this._paused=!1;if(document.hidden)return Promise.resolve();clearTimeout(this._offTimeout);
+this._offTimeout=null;if(this.$video.srcObject)return this.$video.play(),Promise.resolve();let a=this._preferredFacingMode;return this._getCameraStream(a,!0).catch(()=>{a="environment"===a?"user":"environment";return this._getCameraStream()}).then(b=>{a=this._getFacingMode(b)||a;this.$video.srcObject=b;this.$video.play();this._setVideoMirror(a)}).catch(a=>{this._active=!1;throw a;})}stop(){this.pause();this._active=!1}pause(){this._paused=!0;this._active&&(this.$video.pause(),this._offTimeout||(this._offTimeout=
+setTimeout(()=>{let a=this.$video.srcObject?this.$video.srcObject.getTracks():[];for(let b of a)b.stop();this._offTimeout=this.$video.srcObject=null},300)))}static scanImage(a,b=null,c=null,d=null,f=!1,k=!1){let g=c instanceof Worker,h=Promise.all([c||e.createQrEngine(),e._loadImage(a)]).then(([a,h])=>{c=a;let k;[d,k]=this._drawToCanvas(h,b,d,f);return c instanceof Worker?(g||c.postMessage({type:"inversionMode",data:"both"}),new Promise((a,b)=>{let f,l,g;l=d=>{"qrResult"===d.data.type&&(c.removeEventListener("message",
+l),c.removeEventListener("error",g),clearTimeout(f),null!==d.data.data?a(d.data.data):b(e.NO_QR_CODE_FOUND))};g=a=>{c.removeEventListener("message",l);c.removeEventListener("error",g);clearTimeout(f);b("Scanner error: "+(a?a.message||a:"Unknown Error"))};c.addEventListener("message",l);c.addEventListener("error",g);f=setTimeout(()=>g("timeout"),1E4);let h=k.getImageData(0,0,d.width,d.height);c.postMessage({type:"decode",data:h},[h.data.buffer])})):new Promise((a,b)=>{let f=setTimeout(()=>b("Scanner error: timeout"),
+1E4);c.detect(d).then(c=>{c.length?a(c[0].rawValue):b(e.NO_QR_CODE_FOUND)}).catch(a=>b("Scanner error: "+(a.message||a))).finally(()=>clearTimeout(f))})});b&&k&&(h=h.catch(()=>e.scanImage(a,null,c,d,f)));return h=h.finally(()=>{g||e._postWorkerMessage(c,"close")})}setGrayscaleWeights(a,b,c,d=!0){e._postWorkerMessage(this._qrEnginePromise,"grayscaleWeights",{red:a,green:b,blue:c,useIntegerApproximation:d})}setInversionMode(a){e._postWorkerMessage(this._qrEnginePromise,"inversionMode",a)}static createQrEngine(a=
+e.WORKER_PATH){return("BarcodeDetector"in window?BarcodeDetector.getSupportedFormats():Promise.resolve([])).then(b=>-1!==b.indexOf("qr_code")?new BarcodeDetector({formats:["qr_code"]}):new Worker(a))}_onPlay(){this._updateSourceRect();this._scanFrame()}_onVisibilityChange(){document.hidden?this.pause():this._active&&this.start()}_updateSourceRect(){let a=Math.round(2/3*Math.min(this.$video.videoWidth,this.$video.videoHeight));this._sourceRect.width=this._sourceRect.height=a;this._sourceRect.x=(this.$video.videoWidth-
+a)/2;this._sourceRect.y=(this.$video.videoHeight-a)/2}_scanFrame(){if(!this._active||this.$video.paused||this.$video.ended)return!1;requestAnimationFrame(()=>{1>=this.$video.readyState?this._scanFrame():this._qrEnginePromise.then(a=>e.scanImage(this.$video,this._sourceRect,a,this.$canvas,!0)).then(this._onDecode,a=>{this._active&&(-1!==(a.message||a).indexOf("service unavailable")&&(this._qrEnginePromise=e.createQrEngine()),this._onDecodeError(a))}).then(()=>this._scanFrame())})}_onDecodeError(a){a!==
+e.NO_QR_CODE_FOUND&&console.log(a)}_getCameraStream(a,b=!1){let c=[{width:{min:1024}},{width:{min:768}},{}];a&&(b&&(a={exact:a}),c.forEach(b=>b.facingMode=a));return this._getMatchingCameraStream(c)}_getMatchingCameraStream(a){return navigator.mediaDevices&&0!==a.length?navigator.mediaDevices.getUserMedia({video:a.shift()}).catch(()=>this._getMatchingCameraStream(a)):Promise.reject("Camera not found.")}_setFlash(a){return this.hasFlash().then(b=>b?this.$video.srcObject.getVideoTracks()[0].applyConstraints({advanced:[{torch:a}]}):
+Promise.reject("No flash available")).then(()=>this._flashOn=a)}_setVideoMirror(a){this.$video.style.transform="scaleX("+("user"===a?-1:1)+")"}_getFacingMode(a){return(a=a.getVideoTracks()[0])?/rear|back|environment/i.test(a.label)?"environment":/front|user|face/i.test(a.label)?"user":null:null}static _drawToCanvas(a,b=null,c=null,d=!1){c=c||document.createElement("canvas");let f=b&&b.x?b.x:0,k=b&&b.y?b.y:0,g=b&&b.width?b.width:a.width||a.videoWidth;b=b&&b.height?b.height:a.height||a.videoHeight;
+d||c.width===g&&c.height===b||(c.width=g,c.height=b);d=c.getContext("2d",{alpha:!1});d.imageSmoothingEnabled=!1;d.drawImage(a,f,k,g,b,0,0,c.width,c.height);return[c,d]}static _loadImage(a){if(a instanceof HTMLCanvasElement||a instanceof HTMLVideoElement||window.ImageBitmap&&a instanceof window.ImageBitmap||window.OffscreenCanvas&&a instanceof window.OffscreenCanvas)return Promise.resolve(a);if(a instanceof Image)return e._awaitImageLoad(a).then(()=>a);if(a instanceof File||a instanceof Blob||a instanceof
+URL||"string"===typeof a){let b=new Image;b.src=a instanceof File||a instanceof Blob?URL.createObjectURL(a):a;return e._awaitImageLoad(b).then(()=>{(a instanceof File||a instanceof Blob)&&URL.revokeObjectURL(b.src);return b})}return Promise.reject("Unsupported image type.")}static _awaitImageLoad(a){return new Promise((b,c)=>{if(a.complete&&0!==a.naturalWidth)b();else{let d,f;d=()=>{a.removeEventListener("load",d);a.removeEventListener("error",f);b()};f=()=>{a.removeEventListener("load",d);a.removeEventListener("error",
+f);c("Image load error")};a.addEventListener("load",d);a.addEventListener("error",f)}})}static _postWorkerMessage(a,b,c){return Promise.resolve(a).then(a=>{a instanceof Worker&&a.postMessage({type:b,data:c})})}}e.DEFAULT_CANVAS_SIZE=400;e.NO_QR_CODE_FOUND="No QR code found";e.WORKER_PATH="qr-scanner-worker.min.js";export default e
 //# sourceMappingURL=qr-scanner.min.js.map

README.md

@@ -7,3 +7,5 @@ # QR Scanner
 
-- Lightweight: ~48.7 kB (~12.4 kB gzipped) minified with Google's closure compiler.
+- Web cam scanning support out of the box
+- Uses the browser's native [BarcodeDetector](https://web.dev/shape-detection/) [if available](https://github.com/WICG/shape-detection-api#overview)
+- Lightweight: ~50.5 kB (~13.0 kB gzipped) minified with Google's closure compiler. If the native `BarcodeDetector` is available, only ~6.8 kB (~2.7 kB gzipped) are loaded.
 - Improved performance and reduced memory footprint.
@@ -41,6 +43,8 @@ - Runs in a WebWorker which keeps the main / UI thread responsive.
 
+### Setting up the API
+
 `qr-scanner.min.js` is the main API as an es6 module and can be imported as follows:
 ```js
 import QrScanner from 'path/to/qr-scanner.min.js'; // if using plain es6 import
-import QrScanner from 'qr-scanner'; // if installed via package and bundling with webpack or rollup
+import QrScanner from 'qr-scanner'; // if installed via package and bundling with a module bundler like webpack or rollup
 ```
@@ -55,8 +59,46 @@ This requires the importing script to also be an es6 module or a module script tag, e.g.:
 
-`qr-scanner-worker.min.js` is a plain Javascript file for the separate worker thread and needs to be copied over to your project. You should then point `QrScanner.WORKER_PATH` to where you put that file:
+If your project is not based on es6 modules you can
+- use a [dynamic import](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import#Dynamic_Imports) to import the es6 module:
 ```js
+import('path/to/qr-scanner.min.js').then((module) => {
+    const QrScanner = module.default;
+    // do something with QrScanner
+});
+```
+- use `qr-scanner.umd.min.js` for direct usage as non-module script
+```html
+<script src="path/to/qr-scanner.umd.min.js"></script>
+<script>
+    // do something with QrScanner
+</script>
+```
+- bundle `qr-scanner.umd.min.js` directly with your non-module code with tools like [gulp](https://gulpjs.com/) or [grunt](https://gruntjs.com/).
+- bundle the lib with `require` based bundlers like [browserify](https://browserify.org/):
+```js
+const QrScanner = require('qr-scanner'); // if installed via package
+const QrScanner = require('path/to/qr-scanner.umd.min.js'); // if not installed via package
+// do something with QrScanner
+```
+
+### Setting up the worker
+
+`qr-scanner-worker.min.js` is a plain Javascript file for the separate worker thread and needs to be copied over to your project. You should then point `QrScanner.WORKER_PATH` to the location where it will be hosted:
+```js
 QrScanner.WORKER_PATH = 'path/to/qr-scanner-worker.min.js';
 ```
 
-If you're using webpack to bundle your project, the file loader might be interesting for you to automatically copy the worker into your build:
+#### Webpack specific worker setup
+
+If you're using [Webpack](https://webpack.js.org/) to bundle your project, the [file-loader](https://webpack.js.org/loaders/file-loader/) or [raw-loader](https://webpack.js.org/loaders/raw-loader/) might be interesting for you for handling the `qr-scanner-worker.min.js` dependency. Which one to choose depends on your use case.
+
+##### Using file-loader
+
+The `file-loader` automatically copies the worker script into your build and provides the path where it will be located in the build. At runtime, the worker will then be lazy-loaded from there when needed. Due to its ability to lazy-load the worker, using the `file-loader` is the preferred approach if you do not expect the QR scanner to be used every time a user uses your app or if the QR scanner is not launched right after loading the app.
+
+You can add the `file-loader` to your project via:
+```bash
+npm install --save-dev file-loader
+```
+
+You can then use it to copy the worker file and obtain the `WORKER_PATH`:
 ```js
@@ -67,2 +109,21 @@ import QrScannerWorkerPath from '!!file-loader!./node_modules/qr-scanner/qr-scanner-worker.min.js';
 
+Note that the path to the worker file has to be set relatively to the source file where you use it. For example, if your source file using the `QrScanner` sits in `/src/components`, the correct import would be `import QrScannerWorkerPath from '!!file-loader!../../node_modules/qr-scanner/qr-scanner-worker.min.js';`.
+
+##### Using raw-loader
+
+The `raw-loader` bundles the worker as string into your build, thus no separate file gets generated in your build output. While this simplifies the build output and avoids an additional network request, it increases your bundle size and removes the ability to lazy-load the worker file only when needed.
+
+You can add the `raw-loader` to your project via:
+```bash
+npm install --save-dev raw-loader
+```
+
+You can then use it to load the worker file and set the `WORKER_PATH`:
+```js
+import qrScannerWorkerSource from '!!raw-loader!./node_modules/qr-scanner/qr-scanner-worker.min.js';
+QrScanner.WORKER_PATH = URL.createObjectURL(new Blob([qrScannerWorkerSource]));
+```
+
+Note that the path to the worker file has to be set relatively to the source file where you use it. For example, if your source file using the `QrScanner` sits in `/src/components`, the correct import would be `import qrScannerWorkerSource from '!!raw-loader!../../node_modules/qr-scanner/qr-scanner-worker.min.js';`.
+
 ## Usage
@@ -82,7 +143,26 @@
 ```
-As an optional third parameter a specific resolution that should be worked on can be specified. The default is 400.
+As an optional third parameter an error handler to be invoked on decoding errors can be specified. The default is `QrScanner._onDecodeError`.
 
+As an optional fourth parameter a specific resolution that should be worked on can be specified. The default is 400.
+
+As an optional fifth parameter a preference for the camera to use can be specified. Allowed values are `'environment'` and `'user'`. The default is `'environment'`.
+
+To use the default value for an optional parameter, omit it or use `undefined`.
+
+#### 3. Start scanning
+```js
+qrScanner.start();
+```
+
+Call it when you're ready to scan, for example on a button click or directly on page load.
+It will prompt the user for permission to use a camera.
 Note: to read from a Web Cam stream, your page must be served via HTTPS.
 
+#### 4. Stop scanning
+```js
+qrScanner.stop();
+```
 
+If you want, you can stop scanning anytime and resume it by calling `start()` again.
+
 ### Single Image Scanning
@@ -102,5 +182,23 @@
 [OffscreenCanvas](https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas),
-[File](https://developer.mozilla.org/en-US/docs/Web/API/File) / [Blob](https://developer.mozilla.org/en-US/docs/Web/API/Blob)
+[File](https://developer.mozilla.org/en-US/docs/Web/API/File) / [Blob](https://developer.mozilla.org/en-US/docs/Web/API/Blob),
+[Data URIs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs),
+URLs pointing to an image (if they are on the same origin or [CORS enabled](https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image))
 
+As an optional second parameter a region defined by `x`, `y`, `width` and `height` can be specified to which the search for a QR code should be restricted. By default, the region spans the whole image.
 
+As an optional third parameter a manually created QR scanner engine instance to be reused can be specified. This improves performance if you're scanning a lot of images. An engine can be manually created via `QrScanner.createQrEngine(QrScanner.WORKER_PATH)` (async). By default, no engine is reused for single image scanning.
+
+As an optional fourth parameter a manually created canvas to be reused can be specified. This improves performance if you're scanning a lot of images. A canvas can be manually created via a `<canvas>` tag in your markup or `document.createElement('canvas')`. By default, no canvas is reused for single image scanning.
+
+As an optional fifth parameter you can request a provided canvas for reuse to not be resized, irrespective of the source image or source region dimensions. Note that the canvas and source region should have the same aspect ratio to avoid that the image to scan gets distorted which could make detecting QR codes impossible. By default, the canvas size is adapted to the source region dimensions for single image scanning.
+
+To use the default value for an optional parameter, omit it or use `undefined`.
+
+### Checking for Camera availability
+
+This library provides a utility method for checking whether the device has a camera. This can be useful for determining whether to offer the QR web cam scanning functionality to a user.
+```js
+QrScanner.hasCamera(); // async
+```
+
 ### Color Inverted Mode
@@ -123,2 +221,14 @@ The scanner by default scans for dark QR codes on a bright background. You can change this behavior to scan for bright QR codes on dark background or for both at the same time:
 
+### Flashlight support
+
+On supported browsers, you can check whether the used camera has a flash and turn it on or off. Note that `qrScanner.start()` has to be called and awaited first.
+
+```js
+qrScanner.hasFlash(); // check whether the browser and used camera support turning the flash on; async.
+qrScanner.isFlashOn(); // check whether the flash is on
+qrScanner.turnFlashOn(); // turn the flash on if supported; async
+qrScanner.turnFlashOff(); // turn the flash off if supported; async
+qrScanner.toggleFlash(); // toggle the flash if supported; async.
+```
+
 ### Clean Up
@@ -146,2 +256,1 @@
 ```
-

src/qr-scanner.js

 export default class QrScanner {
     /* async */
     static hasCamera() {
+        if (!navigator.mediaDevices) return Promise.resolve(false);
         // note that enumerateDevices can always be called and does not prompt the user for permission. However, device
@@ -12,9 +13,26 @@ // labels are only readable if served via https and an active media stream exists or permanent permission is
 
-    constructor(video, onDecode, canvasSize = QrScanner.DEFAULT_CANVAS_SIZE) {
+    constructor(
+        video,
+        onDecode,
+        canvasSizeOrOnDecodeError = this._onDecodeError.bind(this),
+        canvasSize = QrScanner.DEFAULT_CANVAS_SIZE,
+        preferredFacingMode = 'environment'
+    ) {
         this.$video = video;
         this.$canvas = document.createElement('canvas');
         this._onDecode = onDecode;
+        this._preferredFacingMode = preferredFacingMode;
         this._active = false;
         this._paused = false;
+        this._flashOn = false;
 
+        if (typeof canvasSizeOrOnDecodeError === 'number') {
+            // legacy function signature where canvas size is the third argument
+            canvasSize = canvasSizeOrOnDecodeError;
+            console.warn('You\'re using a deprecated version of the QrScanner constructor which will be removed in '
+                + 'the future');
+        } else {
+            this._onDecodeError = canvasSizeOrOnDecodeError;
+        }
+
         this.$canvas.width = canvasSize;
@@ -29,15 +47,63 @@ this.$canvas.height = canvasSize;
 
-        this._onCanPlay = this._onCanPlay.bind(this);
+        this._updateSourceRect = this._updateSourceRect.bind(this);
         this._onPlay = this._onPlay.bind(this);
         this._onVisibilityChange = this._onVisibilityChange.bind(this);
 
-        this.$video.addEventListener('canplay', this._onCanPlay);
+        // Allow inline playback on iPhone instead of requiring full screen playback,
+        // see https://webkit.org/blog/6784/new-video-policies-for-ios/
+        this.$video.playsInline = true;
+        // Allow play() on iPhone without requiring a user gesture. Should not really be needed as camera stream
+        // includes no audio, but just to be safe.
+        this.$video.muted = true;
+        this.$video.disablePictureInPicture = true;
+        this.$video.addEventListener('loadedmetadata', this._updateSourceRect);
         this.$video.addEventListener('play', this._onPlay);
         document.addEventListener('visibilitychange', this._onVisibilityChange);
 
-        this._qrWorker = new Worker(QrScanner.WORKER_PATH);
+        this._qrEnginePromise = QrScanner.createQrEngine();
     }
 
+    /* async */
+    hasFlash() {
+        if (!('ImageCapture' in window)) {
+            return Promise.resolve(false);
+        }
+
+        const track = this.$video.srcObject ? this.$video.srcObject.getVideoTracks()[0] : null;
+        if (!track) {
+            return Promise.reject('Camera not started or not available');
+        }
+
+        const imageCapture = new ImageCapture(track);
+        return imageCapture.getPhotoCapabilities()
+            .then((result) => {
+                return result.fillLightMode.includes('flash');
+            })
+            .catch((error) => {
+                console.warn(error);
+                return false;
+            });
+    }
+
+    isFlashOn() {
+      return this._flashOn;
+    }
+
+    /* async */
+    toggleFlash() {
+      return this._setFlash(!this._flashOn);
+    }
+
+    /* async */
+    turnFlashOff() {
+      return this._setFlash(false);
+    }
+
+    /* async */
+    turnFlashOn() {
+      return this._setFlash(true);
+    }
+
     destroy() {
-        this.$video.removeEventListener('canplay', this._onCanPlay);
+        this.$video.removeEventListener('loadedmetadata', this._updateSourceRect);
         this.$video.removeEventListener('play', this._onPlay);
@@ -47,5 +113,3 @@ document.removeEventListener('visibilitychange', this._onVisibilityChange);
         this.stop();
-        this._qrWorker.postMessage({
-            type: 'close'
-        });
+        QrScanner._postWorkerMessage(this._qrEnginePromise, 'close');
     }
@@ -76,11 +140,15 @@
 
-        let facingMode = 'environment';
-        return this._getCameraStream('environment', true)
+        let facingMode = this._preferredFacingMode;
+        return this._getCameraStream(facingMode, true)
             .catch(() => {
-                // we (probably) don't have an environment camera
-                facingMode = 'user';
+                // We (probably) don't have a camera of the requested facing mode
+                facingMode = facingMode === 'environment' ? 'user' : 'environment';
                 return this._getCameraStream(); // throws if camera is not accessible (e.g. due to not https)
             })
             .then(stream => {
+                // Try to determine the facing mode from the stream, otherwise use our guess. Note that the guess is not
+                // always accurate as Safari returns cameras of different facing mode, even for exact constraints.
+                facingMode = this._getFacingMode(stream) || facingMode;
                 this.$video.srcObject = stream;
+                this.$video.play();
                 this._setVideoMirror(facingMode);
@@ -109,5 +177,6 @@ })
         this._offTimeout = setTimeout(() => {
-            const track = this.$video.srcObject && this.$video.srcObject.getTracks()[0];
-            if (!track) return;
-            track.stop();
+            const tracks = this.$video.srcObject ? this.$video.srcObject.getTracks() : [];
+            for (const track of tracks) {
+                track.stop(); //  note that this will also automatically turn the flashlight off
+            }
             this.$video.srcObject = null;
@@ -119,53 +188,71 @@ this._offTimeout = null;
     /* async */
-    static scanImage(imageOrFileOrUrl, sourceRect=null, worker=null, canvas=null, fixedCanvasSize=false,
+    static scanImage(imageOrFileOrUrl, sourceRect=null, qrEngine=null, canvas=null, fixedCanvasSize=false,
                      alsoTryWithoutSourceRect=false) {
-        let createdNewWorker = false;
-        let promise = new Promise((resolve, reject) => {
-            if (!worker) {
-                worker = new Worker(QrScanner.WORKER_PATH);
-                createdNewWorker = true;
-                worker.postMessage({ type: 'inversionMode', data: 'both' }); // scan inverted color qr codes too
+        const gotExternalWorker = qrEngine instanceof Worker;
+
+        let promise = Promise.all([
+            qrEngine || QrScanner.createQrEngine(),
+            QrScanner._loadImage(imageOrFileOrUrl),
+        ]).then(([engine, image]) => {
+            qrEngine = engine;
+            let canvasContext;
+            [canvas, canvasContext] = this._drawToCanvas(image, sourceRect, canvas, fixedCanvasSize);
+
+            if (qrEngine instanceof Worker) {
+                if (!gotExternalWorker) {
+                    // Enable scanning of inverted color qr codes. Not using _postWorkerMessage as it's async
+                    qrEngine.postMessage({ type: 'inversionMode', data: 'both' });
+                }
+                return new Promise((resolve, reject) => {
+                    let timeout, onMessage, onError;
+                    onMessage = event => {
+                        if (event.data.type !== 'qrResult') {
+                            return;
+                        }
+                        qrEngine.removeEventListener('message', onMessage);
+                        qrEngine.removeEventListener('error', onError);
+                        clearTimeout(timeout);
+                        if (event.data.data !== null) {
+                            resolve(event.data.data);
+                        } else {
+                            reject(QrScanner.NO_QR_CODE_FOUND);
+                        }
+                    };
+                    onError = (e) => {
+                        qrEngine.removeEventListener('message', onMessage);
+                        qrEngine.removeEventListener('error', onError);
+                        clearTimeout(timeout);
+                        const errorMessage = !e ? 'Unknown Error' : (e.message || e);
+                        reject('Scanner error: ' + errorMessage);
+                    };
+                    qrEngine.addEventListener('message', onMessage);
+                    qrEngine.addEventListener('error', onError);
+                    timeout = setTimeout(() => onError('timeout'), 10000);
+                    const imageData = canvasContext.getImageData(0, 0, canvas.width, canvas.height);
+                    qrEngine.postMessage({
+                        type: 'decode',
+                        data: imageData
+                    }, [imageData.data.buffer]);
+                });
+            } else {
+                return new Promise((resolve, reject) => {
+                    const timeout = setTimeout(() => reject('Scanner error: timeout'), 10000);
+                    qrEngine.detect(canvas).then(scanResults => {
+                        if (!scanResults.length) {
+                            reject(QrScanner.NO_QR_CODE_FOUND);
+                        } else {
+                            resolve(scanResults[0].rawValue);
+                        }
+                    }).catch((e) => reject('Scanner error: ' + (e.message || e))).finally(() => clearTimeout(timeout));
+                });
             }
-            let timeout, onMessage, onError;
-            onMessage = event => {
-                if (event.data.type !== 'qrResult') {
-                    return;
-                }
-                worker.removeEventListener('message', onMessage);
-                worker.removeEventListener('error', onError);
-                clearTimeout(timeout);
-                if (event.data.data !== null) {
-                    resolve(event.data.data);
-                } else {
-                    reject('QR code not found.');
-                }
-            };
-            onError = (e) => {
-                worker.removeEventListener('message', onMessage);
-                worker.removeEventListener('error', onError);
-                clearTimeout(timeout);
-                const errorMessage = !e ? 'Unknown Error' : (e.message || e);
-                reject('Scanner error: ' + errorMessage);
-            };
-            worker.addEventListener('message', onMessage);
-            worker.addEventListener('error', onError);
-            timeout = setTimeout(() => onError('timeout'), 3000);
-            QrScanner._loadImage(imageOrFileOrUrl).then(image => {
-                const imageData = QrScanner._getImageData(image, sourceRect, canvas, fixedCanvasSize);
-                worker.postMessage({
-                    type: 'decode',
-                    data: imageData
-                }, [imageData.data.buffer]);
-            }).catch(onError);
         });
 
         if (sourceRect && alsoTryWithoutSourceRect) {
-            promise = promise.catch(() => QrScanner.scanImage(imageOrFileOrUrl, null, worker, canvas, fixedCanvasSize));
+            promise = promise.catch(() => QrScanner.scanImage(imageOrFileOrUrl, null, qrEngine, canvas, fixedCanvasSize));
         }
 
         promise = promise.finally(() => {
-            if (!createdNewWorker) return;
-            worker.postMessage({
-                type: 'close'
-            });
+            if (gotExternalWorker) return;
+            QrScanner._postWorkerMessage(qrEngine, 'close');
         });
@@ -177,18 +264,24 @@
     setGrayscaleWeights(red, green, blue, useIntegerApproximation = true) {
-        this._qrWorker.postMessage({
-            type: 'grayscaleWeights',
-            data: { red, green, blue, useIntegerApproximation }
-        });
+        // Note that for the native BarcodeDecoder, this is a no-op. However, the native implementations work also
+        // well with colored qr codes.
+        QrScanner._postWorkerMessage(
+            this._qrEnginePromise,
+            'grayscaleWeights',
+            { red, green, blue, useIntegerApproximation }
+        );
     }
 
     setInversionMode(inversionMode) {
-        this._qrWorker.postMessage({
-            type: 'inversionMode',
-            data: inversionMode
-        });
+        // Note that for the native BarcodeDecoder, this is a no-op. However, the native implementations scan normal
+        // and inverted qr codes by default
+        QrScanner._postWorkerMessage(this._qrEnginePromise, 'inversionMode', inversionMode);
     }
 
-    _onCanPlay() {
-        this._updateSourceRect();
-        this.$video.play();
+    /* async */
+    static createQrEngine(workerPath = QrScanner.WORKER_PATH) {
+        return ('BarcodeDetector' in window ? BarcodeDetector.getSupportedFormats() : Promise.resolve([]))
+            .then((supportedFormats) => supportedFormats.indexOf('qr_code') !== -1
+                ? new BarcodeDetector({ formats: ['qr_code'] })
+                : new Worker(workerPath)
+            );
     }
@@ -221,7 +314,20 @@
         requestAnimationFrame(() => {
-            QrScanner.scanImage(this.$video, this._sourceRect, this._qrWorker, this.$canvas, true)
-                .then(this._onDecode, error => {
-                    if (this._active && error !== 'QR code not found.') {
-                        console.error(error);
+            if (this.$video.readyState <= 1) {
+                // Skip scans until the video is ready as drawImage() only works correctly on a video with readyState
+                // > 1, see https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/drawImage#Notes.
+                // This also avoids false positives for videos paused after a successful scan which remains visible on
+                // the canvas until the video is started again and ready.
+                this._scanFrame();
+                return;
+            }
+            this._qrEnginePromise
+                .then((qrEngine) => QrScanner.scanImage(this.$video, this._sourceRect, qrEngine, this.$canvas, true))
+                .then(this._onDecode, (error) => {
+                    if (!this._active) return;
+                    const errorMessage = error.message || error;
+                    if (errorMessage.indexOf('service unavailable') !== -1) {
+                        // When the native BarcodeDetector crashed, create a new one
+                        this._qrEnginePromise = QrScanner.createQrEngine();
                     }
+                    this._onDecodeError(error);
                 })
@@ -232,2 +338,8 @@ .then(() => this._scanFrame());
 
+    _onDecodeError(error) {
+        // default error handler; can be overwritten in the constructor
+        if (error === QrScanner.NO_QR_CODE_FOUND) return;
+        console.log(error);
+    }
+
     _getCameraStream(facingMode, exact = false) {
@@ -250,3 +362,3 @@ const constraintsToTry = [{
     _getMatchingCameraStream(constraintsToTry) {
-        if (constraintsToTry.length === 0) {
+        if (!navigator.mediaDevices || constraintsToTry.length === 0) {
             return Promise.reject('Camera not found.');
@@ -259,2 +371,13 @@ }
 
+    /* async */
+    _setFlash(on) {
+        return this.hasFlash().then((hasFlash) => {
+            if (!hasFlash) return Promise.reject('No flash available');
+            // Note that the video track is guaranteed to exist at this point
+            return this.$video.srcObject.getVideoTracks()[0].applyConstraints({
+                advanced: [{ torch: on }],
+            });
+        }).then(() => this._flashOn = on);
+    }
+
     _setVideoMirror(facingMode) {
@@ -266,3 +389,14 @@ // in user facing mode mirror the video to make it easier for the user to position the QR code
 
-    static _getImageData(image, sourceRect=null, canvas=null, fixedCanvasSize=false) {
+    _getFacingMode(videoStream) {
+        const videoTrack = videoStream.getVideoTracks()[0];
+        if (!videoTrack) return null; // unknown
+        // inspired by https://github.com/JodusNodus/react-qr-reader/blob/master/src/getDeviceId.js#L13
+        return /rear|back|environment/i.test(videoTrack.label)
+            ? 'environment'
+            : /front|user|face/i.test(videoTrack.label)
+                ? 'user'
+                : null; // unknown
+    }
+
+    static _drawToCanvas(image, sourceRect=null, canvas=null, fixedCanvasSize=false) {
         canvas = canvas || document.createElement('canvas');
@@ -280,23 +414,23 @@ const sourceRectX = sourceRect && sourceRect.x? sourceRect.x : 0;
         context.drawImage(image, sourceRectX, sourceRectY, sourceRectWidth, sourceRectHeight, 0, 0, canvas.width, canvas.height);
-        return context.getImageData(0, 0, canvas.width, canvas.height);
+        return [canvas, context];
     }
 
     /* async */
-    static _loadImage(imageOrFileOrUrl) {
-        if (imageOrFileOrUrl instanceof HTMLCanvasElement || imageOrFileOrUrl instanceof HTMLVideoElement
-            || window.ImageBitmap && imageOrFileOrUrl instanceof window.ImageBitmap
-            || window.OffscreenCanvas && imageOrFileOrUrl instanceof window.OffscreenCanvas) {
-            return Promise.resolve(imageOrFileOrUrl);
-        } else if (imageOrFileOrUrl instanceof Image) {
-            return QrScanner._awaitImageLoad(imageOrFileOrUrl).then(() => imageOrFileOrUrl);
-        } else if (imageOrFileOrUrl instanceof File || imageOrFileOrUrl instanceof URL
-            ||  typeof(imageOrFileOrUrl)==='string') {
+    static _loadImage(imageOrFileOrBlobOrUrl) {
+        if (imageOrFileOrBlobOrUrl instanceof HTMLCanvasElement || imageOrFileOrBlobOrUrl instanceof HTMLVideoElement
+            || window.ImageBitmap && imageOrFileOrBlobOrUrl instanceof window.ImageBitmap
+            || window.OffscreenCanvas && imageOrFileOrBlobOrUrl instanceof window.OffscreenCanvas) {
+            return Promise.resolve(imageOrFileOrBlobOrUrl);
+        } else if (imageOrFileOrBlobOrUrl instanceof Image) {
+            return QrScanner._awaitImageLoad(imageOrFileOrBlobOrUrl).then(() => imageOrFileOrBlobOrUrl);
+        } else if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob
+            || imageOrFileOrBlobOrUrl instanceof URL || typeof(imageOrFileOrBlobOrUrl)==='string') {
             const image = new Image();
-            if (imageOrFileOrUrl instanceof File) {
-                image.src = URL.createObjectURL(imageOrFileOrUrl);
+            if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob) {
+                image.src = URL.createObjectURL(imageOrFileOrBlobOrUrl);
             } else {
-                image.src = imageOrFileOrUrl;
+                image.src = imageOrFileOrBlobOrUrl;
             }
             return QrScanner._awaitImageLoad(image).then(() => {
-                if (imageOrFileOrUrl instanceof File) {
+                if (imageOrFileOrBlobOrUrl instanceof File || imageOrFileOrBlobOrUrl instanceof Blob) {
                     URL.revokeObjectURL(image.src);
@@ -334,4 +468,13 @@ }
     }
+
+    /* async */
+    static _postWorkerMessage(qrEngineOrQrEnginePromise, type, data) {
+        return Promise.resolve(qrEngineOrQrEnginePromise).then((qrEngine) => {
+            if (!(qrEngine instanceof Worker)) return;
+            qrEngine.postMessage({ type, data });
+        });
+    }
 }
 QrScanner.DEFAULT_CANVAS_SIZE = 400;
+QrScanner.NO_QR_CODE_FOUND = 'No QR code found';
 QrScanner.WORKER_PATH = 'qr-scanner-worker.min.js';

types/qr-scanner.d.ts

@@ -7,2 +7,3 @@ // Type definitions for qr-scanner
     static DEFAULT_CANVAS_SIZE: number;
+    static NO_QR_CODE_FOUND: string;
     static WORKER_PATH: string;
@@ -12,4 +13,17 @@
 
-    constructor(video: HTMLVideoElement, onDecode: Function, canvasSize?: number);
+    constructor(
+        video: HTMLVideoElement,
+        onDecode: (result: string) => void,
+        onDecodeError?: (error: string) => void,
+        canvasSize?: number,
+        preferredFacingMode?: 'environment' | 'user',
+    );
+    /** @deprecated */
+    constructor(video: HTMLVideoElement, onDecode: (result: string) => void, canvasSize?: number);
 
+    hasFlash(): Promise<boolean>;
+    isFlashOn(): boolean;
+    toggleFlash(): Promise<void>;
+    turnFlashOff(): Promise<void>;
+    turnFlashOn(): Promise<void>;
     destroy(): void;
@@ -29,4 +43,12 @@ start(): Promise<void>;
     ): Promise<string>;
+    static createQrEnginge(workerPath?: string): Promise<Worker | BarcodeDetector>;
 }
 
+// simplified from https://wicg.github.io/shape-detection-api/#barcode-detection-api
+declare class BarcodeDetector {
+    constructor(options?: { formats: string[] });
+    static getSupportedFormats(): Promise<string[]>;
+    detect(image: ImageBitmapSource): Promise<Array<{ rawValue: string }>>;
+}
+
 // exported types
@@ -33,0 +55,0 @@ declare namespace QrScanner {

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