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@ -14,530 +14,532 @@ const vec2 = {
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clone: require('gl-vec2/clone')
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};
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var _inputStream,
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_framegrabber,
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_stopped,
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_canvasContainer = {
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ctx: {
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image: null,
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overlay: null
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exports.default = function() {
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var _inputStream,
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_framegrabber,
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_stopped,
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_canvasContainer = {
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ctx: {
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image: null,
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overlay: null
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},
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dom: {
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image: null,
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overlay: null
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}
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},
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dom: {
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image: null,
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overlay: null
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}
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},
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_inputImageWrapper,
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_boxSize,
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_decoder,
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_workerPool = [],
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_onUIThread = true,
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_resultCollector,
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_config = {};
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function initializeData(imageWrapper) {
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initBuffers(imageWrapper);
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_decoder = BarcodeDecoder.create(_config.decoder, _inputImageWrapper);
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}
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function initInputStream(cb) {
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var video;
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if (_config.inputStream.type === "VideoStream") {
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video = document.createElement("video");
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_inputStream = InputStream.createVideoStream(video);
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} else if (_config.inputStream.type === "ImageStream") {
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_inputStream = InputStream.createImageStream();
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} else if (_config.inputStream.type === "LiveStream") {
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var $viewport = getViewPort();
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if ($viewport) {
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video = $viewport.querySelector("video");
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if (!video) {
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video = document.createElement("video");
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$viewport.appendChild(video);
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_inputImageWrapper,
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_boxSize,
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_decoder,
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_workerPool = [],
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_onUIThread = true,
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_resultCollector,
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_config = {};
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function initializeData(imageWrapper) {
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initBuffers(imageWrapper);
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_decoder = BarcodeDecoder.create(_config.decoder, _inputImageWrapper);
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}
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function initInputStream(cb) {
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var video;
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if (_config.inputStream.type === "VideoStream") {
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video = document.createElement("video");
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_inputStream = InputStream.createVideoStream(video);
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} else if (_config.inputStream.type === "ImageStream") {
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_inputStream = InputStream.createImageStream();
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} else if (_config.inputStream.type === "LiveStream") {
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var $viewport = getViewPort();
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if ($viewport) {
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video = $viewport.querySelector("video");
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if (!video) {
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video = document.createElement("video");
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$viewport.appendChild(video);
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}
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}
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_inputStream = InputStream.createLiveStream(video);
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CameraAccess.request(video, _config.inputStream.constraints)
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.then(() => {
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_inputStream.trigger("canrecord");
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}).catch((err) => {
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return cb(err);
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});
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}
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_inputStream = InputStream.createLiveStream(video);
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CameraAccess.request(video, _config.inputStream.constraints)
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.then(() => {
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_inputStream.trigger("canrecord");
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}).catch((err) => {
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return cb(err);
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});
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_inputStream.setAttribute("preload", "auto");
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_inputStream.setInputStream(_config.inputStream);
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_inputStream.addEventListener("canrecord", canRecord.bind(undefined, cb));
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}
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_inputStream.setAttribute("preload", "auto");
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_inputStream.setInputStream(_config.inputStream);
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_inputStream.addEventListener("canrecord", canRecord.bind(undefined, cb));
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}
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function getViewPort() {
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var target = _config.inputStream.target;
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// Check if target is already a DOM element
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if (target && target.nodeName && target.nodeType === 1) {
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return target;
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} else {
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// Use '#interactive.viewport' as a fallback selector (backwards compatibility)
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var selector = typeof target === 'string' ? target : '#interactive.viewport';
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return document.querySelector(selector);
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function getViewPort() {
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var target = _config.inputStream.target;
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// Check if target is already a DOM element
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if (target && target.nodeName && target.nodeType === 1) {
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return target;
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} else {
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// Use '#interactive.viewport' as a fallback selector (backwards compatibility)
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var selector = typeof target === 'string' ? target : '#interactive.viewport';
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return document.querySelector(selector);
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}
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}
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}
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function canRecord(cb) {
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BarcodeLocator.checkImageConstraints(_inputStream, _config.locator);
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initCanvas(_config);
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_framegrabber = FrameGrabber.create(_inputStream, _canvasContainer.dom.image);
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function canRecord(cb) {
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BarcodeLocator.checkImageConstraints(_inputStream, _config.locator);
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initCanvas(_config);
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_framegrabber = FrameGrabber.create(_inputStream, _canvasContainer.dom.image);
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adjustWorkerPool(_config.numOfWorkers, function() {
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if (_config.numOfWorkers === 0) {
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initializeData();
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}
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ready(cb);
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});
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}
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function ready(cb){
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_inputStream.play();
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cb();
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}
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function initCanvas() {
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if (typeof document !== "undefined") {
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var $viewport = getViewPort();
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_canvasContainer.dom.image = document.querySelector("canvas.imgBuffer");
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if (!_canvasContainer.dom.image) {
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_canvasContainer.dom.image = document.createElement("canvas");
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_canvasContainer.dom.image.className = "imgBuffer";
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if ($viewport && _config.inputStream.type === "ImageStream") {
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$viewport.appendChild(_canvasContainer.dom.image);
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adjustWorkerPool(_config.numOfWorkers, function () {
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if (_config.numOfWorkers === 0) {
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initializeData();
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}
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}
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_canvasContainer.ctx.image = _canvasContainer.dom.image.getContext("2d");
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_canvasContainer.dom.image.width = _inputStream.getCanvasSize().x;
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_canvasContainer.dom.image.height = _inputStream.getCanvasSize().y;
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_canvasContainer.dom.overlay = document.querySelector("canvas.drawingBuffer");
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if (!_canvasContainer.dom.overlay) {
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_canvasContainer.dom.overlay = document.createElement("canvas");
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_canvasContainer.dom.overlay.className = "drawingBuffer";
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if ($viewport) {
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$viewport.appendChild(_canvasContainer.dom.overlay);
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}
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var clearFix = document.createElement("br");
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clearFix.setAttribute("clear", "all");
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if ($viewport) {
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$viewport.appendChild(clearFix);
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}
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}
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_canvasContainer.ctx.overlay = _canvasContainer.dom.overlay.getContext("2d");
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_canvasContainer.dom.overlay.width = _inputStream.getCanvasSize().x;
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_canvasContainer.dom.overlay.height = _inputStream.getCanvasSize().y;
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}
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}
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function initBuffers(imageWrapper) {
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if (imageWrapper) {
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_inputImageWrapper = imageWrapper;
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} else {
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_inputImageWrapper = new ImageWrapper({
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x: _inputStream.getWidth(),
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y: _inputStream.getHeight()
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ready(cb);
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});
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}
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if (ENV.development) {
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console.log(_inputImageWrapper.size);
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function ready(cb) {
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_inputStream.play();
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cb();
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}
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_boxSize = [
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vec2.clone([0, 0]),
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vec2.clone([0, _inputImageWrapper.size.y]),
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vec2.clone([_inputImageWrapper.size.x, _inputImageWrapper.size.y]),
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vec2.clone([_inputImageWrapper.size.x, 0])
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];
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BarcodeLocator.init(_inputImageWrapper, _config.locator);
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}
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function getBoundingBoxes() {
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if (_config.locate) {
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return BarcodeLocator.locate();
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} else {
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return [[
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vec2.clone(_boxSize[0]),
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vec2.clone(_boxSize[1]),
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vec2.clone(_boxSize[2]),
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vec2.clone(_boxSize[3])]];
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function initCanvas() {
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if (typeof document !== "undefined") {
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var $viewport = getViewPort();
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_canvasContainer.dom.image = document.querySelector("canvas.imgBuffer");
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if (!_canvasContainer.dom.image) {
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_canvasContainer.dom.image = document.createElement("canvas");
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_canvasContainer.dom.image.className = "imgBuffer";
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if ($viewport && _config.inputStream.type === "ImageStream") {
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$viewport.appendChild(_canvasContainer.dom.image);
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}
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}
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_canvasContainer.ctx.image = _canvasContainer.dom.image.getContext("2d");
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_canvasContainer.dom.image.width = _inputStream.getCanvasSize().x;
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_canvasContainer.dom.image.height = _inputStream.getCanvasSize().y;
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_canvasContainer.dom.overlay = document.querySelector("canvas.drawingBuffer");
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if (!_canvasContainer.dom.overlay) {
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_canvasContainer.dom.overlay = document.createElement("canvas");
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_canvasContainer.dom.overlay.className = "drawingBuffer";
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if ($viewport) {
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$viewport.appendChild(_canvasContainer.dom.overlay);
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}
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var clearFix = document.createElement("br");
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clearFix.setAttribute("clear", "all");
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if ($viewport) {
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$viewport.appendChild(clearFix);
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}
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}
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_canvasContainer.ctx.overlay = _canvasContainer.dom.overlay.getContext("2d");
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_canvasContainer.dom.overlay.width = _inputStream.getCanvasSize().x;
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_canvasContainer.dom.overlay.height = _inputStream.getCanvasSize().y;
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}
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}
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}
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function transformResult(result) {
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var topRight = _inputStream.getTopRight(),
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xOffset = topRight.x,
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yOffset = topRight.y,
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i;
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function initBuffers(imageWrapper) {
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if (imageWrapper) {
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_inputImageWrapper = imageWrapper;
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} else {
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_inputImageWrapper = new ImageWrapper({
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x: _inputStream.getWidth(),
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y: _inputStream.getHeight()
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});
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}
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if (xOffset === 0 && yOffset === 0) {
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return;
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if (ENV.development) {
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console.log(_inputImageWrapper.size);
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}
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_boxSize = [
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vec2.clone([0, 0]),
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vec2.clone([0, _inputImageWrapper.size.y]),
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vec2.clone([_inputImageWrapper.size.x, _inputImageWrapper.size.y]),
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vec2.clone([_inputImageWrapper.size.x, 0])
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];
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BarcodeLocator.init(_inputImageWrapper, _config.locator);
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}
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if (result.barcodes) {
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for (i = 0; i < result.barcodes.length; i++) {
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transformResult(result.barcodes[i]);
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function getBoundingBoxes() {
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if (_config.locate) {
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return BarcodeLocator.locate();
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} else {
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return [[
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vec2.clone(_boxSize[0]),
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vec2.clone(_boxSize[1]),
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vec2.clone(_boxSize[2]),
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vec2.clone(_boxSize[3])]];
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}
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}
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if (result.line && result.line.length === 2) {
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moveLine(result.line);
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}
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function transformResult(result) {
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var topRight = _inputStream.getTopRight(),
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xOffset = topRight.x,
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yOffset = topRight.y,
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i;
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if (result.box) {
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moveBox(result.box);
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}
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if (xOffset === 0 && yOffset === 0) {
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return;
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}
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if (result.boxes && result.boxes.length > 0) {
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for (i = 0; i < result.boxes.length; i++) {
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moveBox(result.boxes[i]);
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if (result.barcodes) {
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for (i = 0; i < result.barcodes.length; i++) {
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transformResult(result.barcodes[i]);
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}
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}
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}
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|
|
|
|
|
|
|
function moveBox(box) {
|
|
|
|
|
var corner = box.length;
|
|
|
|
|
if (result.line && result.line.length === 2) {
|
|
|
|
|
moveLine(result.line);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while (corner--) {
|
|
|
|
|
box[corner][0] += xOffset;
|
|
|
|
|
box[corner][1] += yOffset;
|
|
|
|
|
if (result.box) {
|
|
|
|
|
moveBox(result.box);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function moveLine(line) {
|
|
|
|
|
line[0].x += xOffset;
|
|
|
|
|
line[0].y += yOffset;
|
|
|
|
|
line[1].x += xOffset;
|
|
|
|
|
line[1].y += yOffset;
|
|
|
|
|
if (result.boxes && result.boxes.length > 0) {
|
|
|
|
|
for (i = 0; i < result.boxes.length; i++) {
|
|
|
|
|
moveBox(result.boxes[i]);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function moveBox(box) {
|
|
|
|
|
var corner = box.length;
|
|
|
|
|
|
|
|
|
|
while (corner--) {
|
|
|
|
|
box[corner][0] += xOffset;
|
|
|
|
|
box[corner][1] += yOffset;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function moveLine(line) {
|
|
|
|
|
line[0].x += xOffset;
|
|
|
|
|
line[0].y += yOffset;
|
|
|
|
|
line[1].x += xOffset;
|
|
|
|
|
line[1].y += yOffset;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function addResult (result, imageData) {
|
|
|
|
|
if (!imageData || !_resultCollector) {
|
|
|
|
|
return;
|
|
|
|
|
function addResult(result, imageData) {
|
|
|
|
|
if (!imageData || !_resultCollector) {
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (result.barcodes) {
|
|
|
|
|
result.barcodes.filter(barcode => barcode.codeResult)
|
|
|
|
|
.forEach(barcode => addResult(barcode, imageData));
|
|
|
|
|
} else if (result.codeResult) {
|
|
|
|
|
_resultCollector.addResult(imageData, _inputStream.getCanvasSize(), result.codeResult);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (result.barcodes) {
|
|
|
|
|
result.barcodes.filter(barcode => barcode.codeResult)
|
|
|
|
|
.forEach(barcode => addResult(barcode, imageData));
|
|
|
|
|
} else if (result.codeResult) {
|
|
|
|
|
_resultCollector.addResult(imageData, _inputStream.getCanvasSize(), result.codeResult);
|
|
|
|
|
function hasCodeResult(result) {
|
|
|
|
|
return result && (result.barcodes ?
|
|
|
|
|
result.barcodes.some(barcode => barcode.codeResult) :
|
|
|
|
|
result.codeResult);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function hasCodeResult (result) {
|
|
|
|
|
return result && (result.barcodes ?
|
|
|
|
|
result.barcodes.some(barcode => barcode.codeResult) :
|
|
|
|
|
result.codeResult);
|
|
|
|
|
}
|
|
|
|
|
function publishResult(result, imageData) {
|
|
|
|
|
let resultToPublish = result;
|
|
|
|
|
|
|
|
|
|
function publishResult(result, imageData) {
|
|
|
|
|
let resultToPublish = result;
|
|
|
|
|
if (result && _onUIThread) {
|
|
|
|
|
transformResult(result);
|
|
|
|
|
addResult(result, imageData);
|
|
|
|
|
resultToPublish = result.barcodes || result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (result && _onUIThread) {
|
|
|
|
|
transformResult(result);
|
|
|
|
|
addResult(result, imageData);
|
|
|
|
|
resultToPublish = result.barcodes || result;
|
|
|
|
|
Events.publish("processed", resultToPublish);
|
|
|
|
|
if (hasCodeResult(result)) {
|
|
|
|
|
Events.publish("detected", resultToPublish);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Events.publish("processed", resultToPublish);
|
|
|
|
|
if (hasCodeResult(result)) {
|
|
|
|
|
Events.publish("detected", resultToPublish);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function locateAndDecode() {
|
|
|
|
|
var result,
|
|
|
|
|
boxes;
|
|
|
|
|
|
|
|
|
|
boxes = getBoundingBoxes();
|
|
|
|
|
if (boxes) {
|
|
|
|
|
result = _decoder.decodeFromBoundingBoxes(boxes);
|
|
|
|
|
result = result || {};
|
|
|
|
|
result.boxes = boxes;
|
|
|
|
|
publishResult(result, _inputImageWrapper.data);
|
|
|
|
|
} else {
|
|
|
|
|
publishResult();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function update() {
|
|
|
|
|
var availableWorker;
|
|
|
|
|
|
|
|
|
|
if (_onUIThread) {
|
|
|
|
|
if (_workerPool.length > 0) {
|
|
|
|
|
availableWorker = _workerPool.filter(function(workerThread) {
|
|
|
|
|
return !workerThread.busy;
|
|
|
|
|
})[0];
|
|
|
|
|
if (availableWorker) {
|
|
|
|
|
_framegrabber.attachData(availableWorker.imageData);
|
|
|
|
|
} else {
|
|
|
|
|
return; // all workers are busy
|
|
|
|
|
}
|
|
|
|
|
function locateAndDecode() {
|
|
|
|
|
var result,
|
|
|
|
|
boxes;
|
|
|
|
|
|
|
|
|
|
boxes = getBoundingBoxes();
|
|
|
|
|
if (boxes) {
|
|
|
|
|
result = _decoder.decodeFromBoundingBoxes(boxes);
|
|
|
|
|
result = result || {};
|
|
|
|
|
result.boxes = boxes;
|
|
|
|
|
publishResult(result, _inputImageWrapper.data);
|
|
|
|
|
} else {
|
|
|
|
|
_framegrabber.attachData(_inputImageWrapper.data);
|
|
|
|
|
publishResult();
|
|
|
|
|
}
|
|
|
|
|
if (_framegrabber.grab()) {
|
|
|
|
|
if (availableWorker) {
|
|
|
|
|
availableWorker.busy = true;
|
|
|
|
|
availableWorker.worker.postMessage({
|
|
|
|
|
cmd: 'process',
|
|
|
|
|
imageData: availableWorker.imageData
|
|
|
|
|
}, [availableWorker.imageData.buffer]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function update() {
|
|
|
|
|
var availableWorker;
|
|
|
|
|
|
|
|
|
|
if (_onUIThread) {
|
|
|
|
|
if (_workerPool.length > 0) {
|
|
|
|
|
availableWorker = _workerPool.filter(function (workerThread) {
|
|
|
|
|
return !workerThread.busy;
|
|
|
|
|
})[0];
|
|
|
|
|
if (availableWorker) {
|
|
|
|
|
_framegrabber.attachData(availableWorker.imageData);
|
|
|
|
|
} else {
|
|
|
|
|
return; // all workers are busy
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
locateAndDecode();
|
|
|
|
|
_framegrabber.attachData(_inputImageWrapper.data);
|
|
|
|
|
}
|
|
|
|
|
if (_framegrabber.grab()) {
|
|
|
|
|
if (availableWorker) {
|
|
|
|
|
availableWorker.busy = true;
|
|
|
|
|
availableWorker.worker.postMessage({
|
|
|
|
|
cmd: 'process',
|
|
|
|
|
imageData: availableWorker.imageData
|
|
|
|
|
}, [availableWorker.imageData.buffer]);
|
|
|
|
|
} else {
|
|
|
|
|
locateAndDecode();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
locateAndDecode();
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
locateAndDecode();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function startContinuousUpdate() {
|
|
|
|
|
var next = null,
|
|
|
|
|
delay = 1000 / (_config.frequency || 60);
|
|
|
|
|
|
|
|
|
|
_stopped = false;
|
|
|
|
|
(function frame(timestamp) {
|
|
|
|
|
next = next || timestamp;
|
|
|
|
|
if (!_stopped) {
|
|
|
|
|
if (timestamp >= next) {
|
|
|
|
|
next += delay;
|
|
|
|
|
update();
|
|
|
|
|
|
|
|
|
|
function startContinuousUpdate() {
|
|
|
|
|
var next = null,
|
|
|
|
|
delay = 1000 / (_config.frequency || 60);
|
|
|
|
|
|
|
|
|
|
_stopped = false;
|
|
|
|
|
(function frame(timestamp) {
|
|
|
|
|
next = next || timestamp;
|
|
|
|
|
if (!_stopped) {
|
|
|
|
|
if (timestamp >= next) {
|
|
|
|
|
next += delay;
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
window.requestAnimFrame(frame);
|
|
|
|
|
}
|
|
|
|
|
window.requestAnimFrame(frame);
|
|
|
|
|
}(performance.now()));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function start() {
|
|
|
|
|
if (_onUIThread && _config.inputStream.type === "LiveStream") {
|
|
|
|
|
startContinuousUpdate();
|
|
|
|
|
} else {
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
}(performance.now()));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function start() {
|
|
|
|
|
if (_onUIThread && _config.inputStream.type === "LiveStream") {
|
|
|
|
|
startContinuousUpdate();
|
|
|
|
|
} else {
|
|
|
|
|
update();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function initWorker(cb) {
|
|
|
|
|
var blobURL,
|
|
|
|
|
workerThread = {
|
|
|
|
|
worker: undefined,
|
|
|
|
|
imageData: new Uint8Array(_inputStream.getWidth() * _inputStream.getHeight()),
|
|
|
|
|
busy: true
|
|
|
|
|
|
|
|
|
|
function initWorker(cb) {
|
|
|
|
|
var blobURL,
|
|
|
|
|
workerThread = {
|
|
|
|
|
worker: undefined,
|
|
|
|
|
imageData: new Uint8Array(_inputStream.getWidth() * _inputStream.getHeight()),
|
|
|
|
|
busy: true
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
blobURL = generateWorkerBlob();
|
|
|
|
|
workerThread.worker = new Worker(blobURL);
|
|
|
|
|
|
|
|
|
|
workerThread.worker.onmessage = function (e) {
|
|
|
|
|
if (e.data.event === 'initialized') {
|
|
|
|
|
URL.revokeObjectURL(blobURL);
|
|
|
|
|
workerThread.busy = false;
|
|
|
|
|
workerThread.imageData = new Uint8Array(e.data.imageData);
|
|
|
|
|
if (ENV.development) {
|
|
|
|
|
console.log("Worker initialized");
|
|
|
|
|
}
|
|
|
|
|
return cb(workerThread);
|
|
|
|
|
} else if (e.data.event === 'processed') {
|
|
|
|
|
workerThread.imageData = new Uint8Array(e.data.imageData);
|
|
|
|
|
workerThread.busy = false;
|
|
|
|
|
publishResult(e.data.result, workerThread.imageData);
|
|
|
|
|
} else if (e.data.event === 'error') {
|
|
|
|
|
if (ENV.development) {
|
|
|
|
|
console.log("Worker error: " + e.data.message);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
blobURL = generateWorkerBlob();
|
|
|
|
|
workerThread.worker = new Worker(blobURL);
|
|
|
|
|
workerThread.worker.postMessage({
|
|
|
|
|
cmd: 'init',
|
|
|
|
|
size: {x: _inputStream.getWidth(), y: _inputStream.getHeight()},
|
|
|
|
|
imageData: workerThread.imageData,
|
|
|
|
|
config: configForWorker(_config)
|
|
|
|
|
}, [workerThread.imageData.buffer]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
workerThread.worker.onmessage = function(e) {
|
|
|
|
|
if (e.data.event === 'initialized') {
|
|
|
|
|
URL.revokeObjectURL(blobURL);
|
|
|
|
|
workerThread.busy = false;
|
|
|
|
|
workerThread.imageData = new Uint8Array(e.data.imageData);
|
|
|
|
|
if (ENV.development) {
|
|
|
|
|
console.log("Worker initialized");
|
|
|
|
|
function configForWorker(config) {
|
|
|
|
|
return {
|
|
|
|
|
...config,
|
|
|
|
|
inputStream: {
|
|
|
|
|
...config.inputStream,
|
|
|
|
|
target: null
|
|
|
|
|
}
|
|
|
|
|
return cb(workerThread);
|
|
|
|
|
} else if (e.data.event === 'processed') {
|
|
|
|
|
workerThread.imageData = new Uint8Array(e.data.imageData);
|
|
|
|
|
workerThread.busy = false;
|
|
|
|
|
publishResult(e.data.result, workerThread.imageData);
|
|
|
|
|
} else if (e.data.event === 'error') {
|
|
|
|
|
if (ENV.development) {
|
|
|
|
|
console.log("Worker error: " + e.data.message);
|
|
|
|
|
};
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function workerInterface(factory) {
|
|
|
|
|
/* eslint-disable no-undef*/
|
|
|
|
|
if (factory) {
|
|
|
|
|
var Quagga = factory().default;
|
|
|
|
|
if (!Quagga) {
|
|
|
|
|
self.postMessage({'event': 'error', message: 'Quagga could not be created'});
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
workerThread.worker.postMessage({
|
|
|
|
|
cmd: 'init',
|
|
|
|
|
size: {x: _inputStream.getWidth(), y: _inputStream.getHeight()},
|
|
|
|
|
imageData: workerThread.imageData,
|
|
|
|
|
config: configForWorker(_config)
|
|
|
|
|
}, [workerThread.imageData.buffer]);
|
|
|
|
|
}
|
|
|
|
|
var imageWrapper;
|
|
|
|
|
|
|
|
|
|
self.onmessage = function (e) {
|
|
|
|
|
if (e.data.cmd === 'init') {
|
|
|
|
|
var config = e.data.config;
|
|
|
|
|
config.numOfWorkers = 0;
|
|
|
|
|
imageWrapper = new Quagga.ImageWrapper({
|
|
|
|
|
x: e.data.size.x,
|
|
|
|
|
y: e.data.size.y
|
|
|
|
|
}, new Uint8Array(e.data.imageData));
|
|
|
|
|
Quagga.init(config, ready, imageWrapper);
|
|
|
|
|
Quagga.onProcessed(onProcessed);
|
|
|
|
|
} else if (e.data.cmd === 'process') {
|
|
|
|
|
imageWrapper.data = new Uint8Array(e.data.imageData);
|
|
|
|
|
Quagga.start();
|
|
|
|
|
} else if (e.data.cmd === 'setReaders') {
|
|
|
|
|
Quagga.setReaders(e.data.readers);
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
function configForWorker(config) {
|
|
|
|
|
return {
|
|
|
|
|
...config,
|
|
|
|
|
inputStream: {
|
|
|
|
|
...config.inputStream,
|
|
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|
|
target: null
|
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|
|
}
|
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|
|
};
|
|
|
|
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}
|
|
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|
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|
|
|
|
|
function workerInterface(factory) {
|
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|
|
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/* eslint-disable no-undef*/
|
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|
|
|
if (factory) {
|
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|
|
var Quagga = factory().default;
|
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|
|
|
if (!Quagga) {
|
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|
|
self.postMessage({'event': 'error', message: 'Quagga could not be created'});
|
|
|
|
|
return;
|
|
|
|
|
function onProcessed(result) {
|
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|
|
self.postMessage({
|
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|
|
'event': 'processed',
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|
|
imageData: imageWrapper.data,
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|
result: result
|
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|
|
|
}, [imageWrapper.data.buffer]);
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|
}
|
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|
}
|
|
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|
|
var imageWrapper;
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|
|
|
|
|
|
|
self.onmessage = function(e) {
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|
|
if (e.data.cmd === 'init') {
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|
|
var config = e.data.config;
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|
|
config.numOfWorkers = 0;
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|
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|
|
imageWrapper = new Quagga.ImageWrapper({
|
|
|
|
|
x: e.data.size.x,
|
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|
|
y: e.data.size.y
|
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|
|
|
}, new Uint8Array(e.data.imageData));
|
|
|
|
|
Quagga.init(config, ready, imageWrapper);
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|
|
|
|
Quagga.onProcessed(onProcessed);
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|
|
|
} else if (e.data.cmd === 'process') {
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|
|
imageWrapper.data = new Uint8Array(e.data.imageData);
|
|
|
|
|
Quagga.start();
|
|
|
|
|
} else if (e.data.cmd === 'setReaders') {
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|
|
Quagga.setReaders(e.data.readers);
|
|
|
|
|
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|
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|
|
function ready() { // eslint-disable-line
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|
|
self.postMessage({'event': 'initialized', imageData: imageWrapper.data}, [imageWrapper.data.buffer]);
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
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|
|
|
|
|
function onProcessed(result) {
|
|
|
|
|
self.postMessage({
|
|
|
|
|
'event': 'processed',
|
|
|
|
|
imageData: imageWrapper.data,
|
|
|
|
|
result: result
|
|
|
|
|
}, [imageWrapper.data.buffer]);
|
|
|
|
|
/* eslint-enable */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function ready() { // eslint-disable-line
|
|
|
|
|
self.postMessage({'event': 'initialized', imageData: imageWrapper.data}, [imageWrapper.data.buffer]);
|
|
|
|
|
}
|
|
|
|
|
function generateWorkerBlob() {
|
|
|
|
|
var blob,
|
|
|
|
|
factorySource;
|
|
|
|
|
|
|
|
|
|
/* eslint-enable */
|
|
|
|
|
}
|
|
|
|
|
/* jshint ignore:start */
|
|
|
|
|
if (typeof __factorySource__ !== 'undefined') {
|
|
|
|
|
factorySource = __factorySource__; // eslint-disable-line no-undef
|
|
|
|
|
}
|
|
|
|
|
/* jshint ignore:end */
|
|
|
|
|
|
|
|
|
|
function generateWorkerBlob() {
|
|
|
|
|
var blob,
|
|
|
|
|
factorySource;
|
|
|
|
|
blob = new Blob(['(' + workerInterface.toString() + ')(' + factorySource + ');'],
|
|
|
|
|
{type: 'text/javascript'});
|
|
|
|
|
|
|
|
|
|
/* jshint ignore:start */
|
|
|
|
|
if (typeof __factorySource__ !== 'undefined') {
|
|
|
|
|
factorySource = __factorySource__; // eslint-disable-line no-undef
|
|
|
|
|
return window.URL.createObjectURL(blob);
|
|
|
|
|
}
|
|
|
|
|
/* jshint ignore:end */
|
|
|
|
|
|
|
|
|
|
blob = new Blob(['(' + workerInterface.toString() + ')(' + factorySource + ');'],
|
|
|
|
|
{type: 'text/javascript'});
|
|
|
|
|
|
|
|
|
|
return window.URL.createObjectURL(blob);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function setReaders(readers) {
|
|
|
|
|
if (_decoder) {
|
|
|
|
|
_decoder.setReaders(readers);
|
|
|
|
|
} else if (_onUIThread && _workerPool.length > 0) {
|
|
|
|
|
_workerPool.forEach(function(workerThread) {
|
|
|
|
|
workerThread.worker.postMessage({cmd: 'setReaders', readers: readers});
|
|
|
|
|
});
|
|
|
|
|
function setReaders(readers) {
|
|
|
|
|
if (_decoder) {
|
|
|
|
|
_decoder.setReaders(readers);
|
|
|
|
|
} else if (_onUIThread && _workerPool.length > 0) {
|
|
|
|
|
_workerPool.forEach(function (workerThread) {
|
|
|
|
|
workerThread.worker.postMessage({cmd: 'setReaders', readers: readers});
|
|
|
|
|
});
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function adjustWorkerPool(capacity, cb) {
|
|
|
|
|
const increaseBy = capacity - _workerPool.length;
|
|
|
|
|
if (increaseBy === 0) {
|
|
|
|
|
return cb && cb();
|
|
|
|
|
}
|
|
|
|
|
if (increaseBy < 0) {
|
|
|
|
|
const workersToTerminate = _workerPool.slice(increaseBy);
|
|
|
|
|
workersToTerminate.forEach(function(workerThread) {
|
|
|
|
|
workerThread.worker.terminate();
|
|
|
|
|
if (ENV.development) {
|
|
|
|
|
console.log("Worker terminated!");
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
_workerPool = _workerPool.slice(0, increaseBy);
|
|
|
|
|
return cb && cb();
|
|
|
|
|
} else {
|
|
|
|
|
for (var i = 0; i < increaseBy; i++) {
|
|
|
|
|
initWorker(workerInitialized);
|
|
|
|
|
function adjustWorkerPool(capacity, cb) {
|
|
|
|
|
const increaseBy = capacity - _workerPool.length;
|
|
|
|
|
if (increaseBy === 0) {
|
|
|
|
|
return cb && cb();
|
|
|
|
|
}
|
|
|
|
|
if (increaseBy < 0) {
|
|
|
|
|
const workersToTerminate = _workerPool.slice(increaseBy);
|
|
|
|
|
workersToTerminate.forEach(function (workerThread) {
|
|
|
|
|
workerThread.worker.terminate();
|
|
|
|
|
if (ENV.development) {
|
|
|
|
|
console.log("Worker terminated!");
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
_workerPool = _workerPool.slice(0, increaseBy);
|
|
|
|
|
return cb && cb();
|
|
|
|
|
} else {
|
|
|
|
|
for (var i = 0; i < increaseBy; i++) {
|
|
|
|
|
initWorker(workerInitialized);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function workerInitialized(workerThread) {
|
|
|
|
|
_workerPool.push(workerThread);
|
|
|
|
|
if (_workerPool.length >= capacity){
|
|
|
|
|
cb && cb();
|
|
|
|
|
function workerInitialized(workerThread) {
|
|
|
|
|
_workerPool.push(workerThread);
|
|
|
|
|
if (_workerPool.length >= capacity) {
|
|
|
|
|
cb && cb();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
export default {
|
|
|
|
|
init: function(config, cb, imageWrapper) {
|
|
|
|
|
_config = merge({}, Config, config);
|
|
|
|
|
if (imageWrapper) {
|
|
|
|
|
_onUIThread = false;
|
|
|
|
|
initializeData(imageWrapper);
|
|
|
|
|
return cb();
|
|
|
|
|
} else {
|
|
|
|
|
initInputStream(cb);
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
start: function() {
|
|
|
|
|
start();
|
|
|
|
|
},
|
|
|
|
|
stop: function() {
|
|
|
|
|
_stopped = true;
|
|
|
|
|
adjustWorkerPool(0);
|
|
|
|
|
if (_config.inputStream.type === "LiveStream") {
|
|
|
|
|
CameraAccess.release();
|
|
|
|
|
_inputStream.clearEventHandlers();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
pause: function() {
|
|
|
|
|
_stopped = true;
|
|
|
|
|
},
|
|
|
|
|
onDetected: function(callback) {
|
|
|
|
|
Events.subscribe("detected", callback);
|
|
|
|
|
},
|
|
|
|
|
offDetected: function(callback) {
|
|
|
|
|
Events.unsubscribe("detected", callback);
|
|
|
|
|
},
|
|
|
|
|
onProcessed: function(callback) {
|
|
|
|
|
Events.subscribe("processed", callback);
|
|
|
|
|
},
|
|
|
|
|
offProcessed: function(callback) {
|
|
|
|
|
Events.unsubscribe("processed", callback);
|
|
|
|
|
},
|
|
|
|
|
setReaders: function(readers) {
|
|
|
|
|
setReaders(readers);
|
|
|
|
|
},
|
|
|
|
|
registerResultCollector: function(resultCollector) {
|
|
|
|
|
if (resultCollector && typeof resultCollector.addResult === 'function') {
|
|
|
|
|
_resultCollector = resultCollector;
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
canvas: _canvasContainer,
|
|
|
|
|
decodeSingle: function(config, resultCallback) {
|
|
|
|
|
config = merge({
|
|
|
|
|
inputStream: {
|
|
|
|
|
type: "ImageStream",
|
|
|
|
|
sequence: false,
|
|
|
|
|
size: 800,
|
|
|
|
|
src: config.src
|
|
|
|
|
},
|
|
|
|
|
numOfWorkers: (ENV.development && config.debug) ? 0 : 1,
|
|
|
|
|
locator: {
|
|
|
|
|
halfSample: false
|
|
|
|
|
return {
|
|
|
|
|
init: function (config, cb, imageWrapper) {
|
|
|
|
|
_config = merge({}, Config, config);
|
|
|
|
|
if (imageWrapper) {
|
|
|
|
|
_onUIThread = false;
|
|
|
|
|
initializeData(imageWrapper);
|
|
|
|
|
return cb();
|
|
|
|
|
} else {
|
|
|
|
|
initInputStream(cb);
|
|
|
|
|
}
|
|
|
|
|
}, config);
|
|
|
|
|
this.init(config, () => {
|
|
|
|
|
Events.once("processed", (result) => {
|
|
|
|
|
this.stop();
|
|
|
|
|
resultCallback.call(null, result);
|
|
|
|
|
}, true);
|
|
|
|
|
},
|
|
|
|
|
start: function () {
|
|
|
|
|
start();
|
|
|
|
|
});
|
|
|
|
|
},
|
|
|
|
|
ImageWrapper: ImageWrapper,
|
|
|
|
|
ImageDebug: ImageDebug,
|
|
|
|
|
ResultCollector: ResultCollector,
|
|
|
|
|
CameraAccess: CameraAccess,
|
|
|
|
|
};
|
|
|
|
|
},
|
|
|
|
|
stop: function () {
|
|
|
|
|
_stopped = true;
|
|
|
|
|
adjustWorkerPool(0);
|
|
|
|
|
if (_config.inputStream.type === "LiveStream") {
|
|
|
|
|
CameraAccess.release();
|
|
|
|
|
_inputStream.clearEventHandlers();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
pause: function () {
|
|
|
|
|
_stopped = true;
|
|
|
|
|
},
|
|
|
|
|
onDetected: function (callback) {
|
|
|
|
|
Events.subscribe("detected", callback);
|
|
|
|
|
},
|
|
|
|
|
offDetected: function (callback) {
|
|
|
|
|
Events.unsubscribe("detected", callback);
|
|
|
|
|
},
|
|
|
|
|
onProcessed: function (callback) {
|
|
|
|
|
Events.subscribe("processed", callback);
|
|
|
|
|
},
|
|
|
|
|
offProcessed: function (callback) {
|
|
|
|
|
Events.unsubscribe("processed", callback);
|
|
|
|
|
},
|
|
|
|
|
setReaders: function (readers) {
|
|
|
|
|
setReaders(readers);
|
|
|
|
|
},
|
|
|
|
|
registerResultCollector: function (resultCollector) {
|
|
|
|
|
if (resultCollector && typeof resultCollector.addResult === 'function') {
|
|
|
|
|
_resultCollector = resultCollector;
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
canvas: _canvasContainer,
|
|
|
|
|
decodeSingle: function (config, resultCallback) {
|
|
|
|
|
config = merge({
|
|
|
|
|
inputStream: {
|
|
|
|
|
type: "ImageStream",
|
|
|
|
|
sequence: false,
|
|
|
|
|
size: 800,
|
|
|
|
|
src: config.src
|
|
|
|
|
},
|
|
|
|
|
numOfWorkers: (ENV.development && config.debug) ? 0 : 1,
|
|
|
|
|
locator: {
|
|
|
|
|
halfSample: false
|
|
|
|
|
}
|
|
|
|
|
}, config);
|
|
|
|
|
this.init(config, () => {
|
|
|
|
|
Events.once("processed", (result) => {
|
|
|
|
|
this.stop();
|
|
|
|
|
resultCallback.call(null, result);
|
|
|
|
|
}, true);
|
|
|
|
|
start();
|
|
|
|
|
});
|
|
|
|
|
},
|
|
|
|
|
ImageWrapper: ImageWrapper,
|
|
|
|
|
ImageDebug: ImageDebug,
|
|
|
|
|
ResultCollector: ResultCollector,
|
|
|
|
|
CameraAccess: CameraAccess,
|
|
|
|
|
};
|
|
|
|
|
}
|
Adam Dobrawy
7 years ago