@preflower/barcode-detector-polyfill/dist/index.js

A WebAssembly polyfill for the Barcode Detection API

/*!
 * @preflower/barcode-detector-polyfill v0.9.21
 * A WebAssembly polyfill for the Barcode Detection API
 * Built 2024-11-29T04:04:31.263Z
 * (c) 2021-present Ferdinand Kasper <fkasper@modus-operandi.at>
 * Released under the MIT license.
 * 
 * This work uses https://github.com/undecaf/zbar-wasm.git as per
 * LGPL-2.1 section 6 (https://opensource.org/licenses/LGPL-2.1).
 */
var barcodeDetectorPolyfill=function(e,t){"use strict";function n(e,t,n,r){return new(n||(n=Promise))((function(a,o){function i(e){try{m(r.next(e))}catch(e){o(e)}}function s(e){try{m(r.throw(e))}catch(e){o(e)}}function m(e){var t;e.done?a(e.value):(t=e.value,t instanceof n?t:new n((function(e){e(t)}))).then(i,s)}m((r=r.apply(e,t||[])).next())}))}"function"==typeof SuppressedError&&SuppressedError;class r{constructor(e,n=t.ZBarConfigType.ZBAR_CFG_ENABLE,r=1){this.symbolType=e,this.configType=n,this.number=r,this.configSteps=[this]}static register(e,t,n=t.symbolType){return r.formatsToConfigs[e]=t,r.typesToFormats[n]=r.typesToFormats[n]||e,t}static formats(){return Object.keys(r.formatsToConfigs)}static toFormat(e){return r.typesToFormats[e]}static configure(e,t){var n;null===(n=r.formatsToConfigs[t])||void 0===n||n.configSteps.forEach((t=>e.setConfig(t.symbolType,t.configType,t.number)))}add(e){return this.configSteps.push(e),this}}var a;r.formatsToConfigs={},r.typesToFormats={},r.register("codabar",new r(t.ZBarSymbolType.ZBAR_CODABAR)),r.register("code_39",new r(t.ZBarSymbolType.ZBAR_CODE39)),r.register("code_93",new r(t.ZBarSymbolType.ZBAR_CODE93)),r.register("code_128",new r(t.ZBarSymbolType.ZBAR_CODE128)),r.register("databar",new r(t.ZBarSymbolType.ZBAR_DATABAR)),r.register("databar_exp",new r(t.ZBarSymbolType.ZBAR_DATABAR_EXP)),r.register("ean_2",new r(t.ZBarSymbolType.ZBAR_EAN2)),r.register("ean_5",new r(t.ZBarSymbolType.ZBAR_EAN5)),r.register("ean_8",new r(t.ZBarSymbolType.ZBAR_EAN8)),r.register("ean_13",new r(t.ZBarSymbolType.ZBAR_EAN13)),r.register("ean_13+2",new r(t.ZBarSymbolType.ZBAR_EAN13)).add(new r(t.ZBarSymbolType.ZBAR_EAN2)),r.register("ean_13+5",new r(t.ZBarSymbolType.ZBAR_EAN13)).add(new r(t.ZBarSymbolType.ZBAR_EAN5)),r.register("isbn_10",new r(t.ZBarSymbolType.ZBAR_ISBN10)).add(new r(t.ZBarSymbolType.ZBAR_EAN13)),r.register("isbn_13",new r(t.ZBarSymbolType.ZBAR_ISBN13)).add(new r(t.ZBarSymbolType.ZBAR_EAN13)),r.register("isbn_13+2",new r(t.ZBarSymbolType.ZBAR_ISBN13)).add(new r(t.ZBarSymbolType.ZBAR_EAN13)).add(new r(t.ZBarSymbolType.ZBAR_EAN2)),r.register("isbn_13+5",new r(t.ZBarSymbolType.ZBAR_ISBN13)).add(new r(t.ZBarSymbolType.ZBAR_EAN13)).add(new r(t.ZBarSymbolType.ZBAR_EAN5)),r.register("itf",new r(t.ZBarSymbolType.ZBAR_I25)),r.register("qr_code",new r(t.ZBarSymbolType.ZBAR_QRCODE)),r.register("sq_code",new r(t.ZBarSymbolType.ZBAR_SQCODE)),r.register("upc_a",new r(t.ZBarSymbolType.ZBAR_UPCA)).add(new r(t.ZBarSymbolType.ZBAR_EAN13)),r.register("upc_e",new r(t.ZBarSymbolType.ZBAR_UPCE)).add(new r(t.ZBarSymbolType.ZBAR_EAN13)),e.Orientation=void 0,(a=e.Orientation||(e.Orientation={}))[a.UNKNOWN=-1]="UNKNOWN",a[a.UPRIGHT=0]="UPRIGHT",a[a.ROTATED_RIGHT=1]="ROTATED_RIGHT",a[a.UPSIDE_DOWN=2]="UPSIDE_DOWN",a[a.ROTATED_LEFT=3]="ROTATED_LEFT";class o{}const i=(()=>{try{return new OffscreenCanvas(1,1).getContext("2d")instanceof OffscreenCanvasRenderingContext2D}catch(e){return!1}})();class s{constructor(e={}){if(void 0!==e.formats){if(!Array.isArray(e.formats)||!e.formats.length)throw new TypeError(`Barcode formats should be a non-empty array of strings but are: ${JSON.stringify(e)}`);const t=e.formats.filter((e=>!r.formats().includes(e)));if(t.length)throw new TypeError(`Unsupported barcode format(s): ${t.join(", ")}`)}this.formats=e.formats||r.formats(),this.zbarConfig=e.zbar||new o}static getSupportedFormats(){return Promise.resolve(r.formats())}detect(e){if(!s.isImageBitmapSource(e))throw new TypeError("BarcodeDetector.detect() argument is not an ImageBitmapSource");const n=s.intrinsicDimensions(e);if(0===n.width||0===n.height)return Promise.resolve([]);try{return Promise.all([this.toImageData(e),this.getScanner()]).then((e=>{const n=e[0],r=e[1];return void 0!==this.zbarConfig.enableCache&&r.enableCache(this.zbarConfig.enableCache),t.scanRGBABuffer(n.data,n.width,n.height,r)})).then((e=>e.map((e=>this.toBarcodeDetectorResult(e)))))}catch(e){return Promise.reject(e)}}getScanner(){return new Promise(((e,a)=>n(this,void 0,void 0,(function*(){if(!this.scanner){const e=yield t.getDefaultScanner();this.formats.length>0&&(e.setConfig(t.ZBarSymbolType.ZBAR_NONE,t.ZBarConfigType.ZBAR_CFG_ENABLE,0),this.formats.forEach((t=>r.configure(e,t)))),this.scanner=e}e(this.scanner)}))))}toImageData(e){const t=e=>{const t=s.intrinsicDimensions(e);this.canvas&&this.canvas.width===t.width&&this.canvas.height===t.height||(this.canvas=function(e,t){if(i)return new OffscreenCanvas(e,t);{const n=document.createElement("canvas");return n.width=e,n.height=t,n}}(t.width,t.height));const n=this.canvas,r=n.getContext("2d");return r.drawImage(e,0,0),r.getImageData(0,0,n.width,n.height)};if(e instanceof ImageData)return Promise.resolve(e);if(e instanceof Blob){const n=document.createElement("img");return n.src=URL.createObjectURL(e),n.decode().then((()=>t(n))).finally((()=>URL.revokeObjectURL(n.src)))}return e instanceof CanvasRenderingContext2D?Promise.resolve(e.getImageData(0,0,e.canvas.width,e.canvas.height)):Promise.resolve(t(e))}toBarcodeDetectorResult(e){const t={minX:1/0,maxX:-1/0,minY:1/0,maxY:-1/0};e.points.forEach((e=>{t.minX=Math.min(t.minX,e.x),t.maxX=Math.max(t.maxX,e.x),t.minY=Math.min(t.minY,e.y),t.maxY=Math.max(t.maxY,e.y)}));return{format:r.toFormat(e.type),rawValue:e.decode(this.zbarConfig.encoding),orientation:e.orientation,quality:e.quality,boundingBox:DOMRectReadOnly.fromRect({x:t.minX,y:t.minY,width:t.maxX-t.minX,height:t.maxY-t.minY}),cornerPoints:[{x:t.minX,y:t.minY},{x:t.maxX,y:t.minY},{x:t.maxX,y:t.maxY},{x:t.minX,y:t.maxY}]}}static isImageBitmapSource(e){return"undefined"!=typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!=typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!=typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!=typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!=typeof ImageBitmap&&e instanceof ImageBitmap||e instanceof ImageData||e instanceof Blob||e&&0==e.width||e&&0==e.height}static intrinsicDimensions(e){return{width:Number(e.naturalWidth||e.videoWidth||e.width),height:Number(e.naturalHeight||e.videoHeight||e.height)}}}return e.BarcodeDetectorPolyfill=s,e.ZBAR_WASM_PKG_NAME="@undecaf/zbar-wasm",e.ZBAR_WASM_REPOSITORY="https://cdn.jsdelivr.net/npm/@undecaf/zbar-wasm@0.9.15",e.ZBAR_WASM_VERSION="0.9.15",e.ZBarConfig=o,Object.defineProperties(e,{__esModule:{value:!0},[Symbol.toStringTag]:{value:"Module"}}),e}({},zbarWasm);
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