moar geen

lib/Tesseract.2015.07.26.js

@@ -6,7 +6,7 @@ var Tesseract = (function(){
 	//https://rawgit.com/naptha/tesseract.js/master/worker/worker.js   for testing
 	//https://cdn.rawgit.com/naptha/tesseract.js/master/worker/worker.js
 
-	var blob = new Blob(["importScripts('https://cdn.rawgit.com/naptha/tesseract.js/master/lib/worker.2015.07.25.v0.js');"]); // changed on build
+	var blob = new Blob(["importScripts('https://cdn.rawgit.com/naptha/tesseract.js/master/lib/worker.2015.07.26.js');"]); // changed on build
 	// console.log('localhost')
 	var worker = new Worker(window.URL.createObjectURL(blob));
 	worker.postMessage({init: {mem: 16777216*6}})

lib/Tesseract_dev.js

@@ -0,0 +1,130 @@
+var Tesseract = (function(){
+
+	var Tesseract = {}
+
+	//https://cdn.rawgit.com/naptha/tesseract.js/master/worker/worker.js
+	//https://rawgit.com/naptha/tesseract.js/master/worker/worker.js   for testing
+	//https://cdn.rawgit.com/naptha/tesseract.js/master/worker/worker.js
+
+	var blob = new Blob(["importScripts('http://localhost:1234/master/lib/worker.2015.07.26.js');"]); // changed on build
+	// console.log('localhost')
+	var worker = new Worker(window.URL.createObjectURL(blob));
+	worker.postMessage({init: {mem: 16777216*6}})
+	var bigworker = false
+
+	var index = 0
+	var handlers = []
+
+	worker.onmessage = function(e){
+		var handler = handlers[e.data.index]
+		if(e.data.progress){
+			handler.progress(e.data.progress)
+		}
+		else if(e.data.err){
+			handler.reject(e.data.err)
+			handler.callback(e.data.err)
+		}
+		else {
+			handler.resolve(e.data.result)
+			handler.callback(null,e.data.result)
+		}
+	}
+
+	function convertToImageData(image){
+		if(image.getContext){
+			image = image.getContext('2d');
+		}else if(image.tagName == "IMG" || image.tagName == "VIDEO"){
+			var c = document.createElement('canvas');
+			if(image.tagName == "IMG"){
+				c.width  = image.naturalWidth;
+				c.height = image.naturalHeight;
+			}else if(image.tagName == "VIDEO"){
+				c.width  = image.videoWidth;
+				c.height = image.videoHeight;
+			}
+			var ctx = c.getContext('2d');
+			ctx.drawImage(image, 0, 0);
+			image = ctx;
+		}
+		if(image.getImageData) image = image.getImageData(0, 0, image.canvas.width, image.canvas.height);
+		return image	
+	}
+
+	Tesseract.detect = function(image, progress, callback){
+		image = convertToImageData(image)
+
+		if(typeof progress === "undefined"){
+			progress = callback = new Function()
+		}
+
+		if (typeof callback === "undefined"){
+			callback = progress
+			progress = new Function()
+		}
+
+		var i = index++
+
+		handlers[i] = {
+			resolve: new Function(),
+			reject: new Function()
+		}
+		handlers[i].callback = callback
+		handlers[i].progress = progress
+		
+		return new Promise(function(resolve, reject){
+			handlers[i].resolve = resolve
+			handlers[i].reject = reject
+			worker.postMessage({index: i, fun: 'detect', image: image})
+		})
+
+	}
+
+	Tesseract.recognize = function(image, options, callback){
+		var lang = options.lang
+		if (typeof lang === "undefined"){
+			lang = 'eng'
+		}
+
+		if (!bigworker && ['chi_sim', 'chi_tra', 'jpn'].indexOf(lang) != -1){
+			worker.postMessage({init: {mem: 16777216*10}})
+			bigworker = true
+			console.log('started big worker')
+		}
+
+		if (typeof options === 'string') {
+			lang = options
+			options = {}
+		}
+
+		if (typeof options === "function") {
+			callback = options
+			options = {}
+		}
+
+		image = convertToImageData(image)
+
+		var i = index++
+
+		handlers[i] = {
+			resolve: new Function(),
+			reject: new Function()
+		}
+		handlers[i].callback = callback || new Function()
+		handlers[i].progress = (function(){
+			if(typeof options.progress === 'function'){
+				var p = options.progress
+				delete options.progress
+				return p
+			}
+			return function(){}
+		})()
+
+		return new Promise(function(resolve, reject){
+			handlers[i].resolve = resolve
+			handlers[i].reject = reject
+			worker.postMessage({index: i, fun: 'recognize', image: image, lang: lang, options: options})
+		})
+	
+	}
+	return Tesseract
+})()