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File: README.md
WebCodeCamJS & WebCodeCamJQuery =============================== New versions of popular WebCodeCam jQuery plugin<br> - Very simple usage - Some option for optimal result - Quick implementation - Optimized for all modern browsers Advantages compared to the previous version:<br> - Built in camera selector menu creation - Faster - Lower CPU and Memory usage - More configurable * [Homepage] - Home page, demonstration <img src = "compatibility.jpg" width="100%"/> <img src = "demo.jpg" width="100%"/> Version ---- 2.7.0 - Extend Browser compatibility Version ---- 2.1.0 - Extend BuildSelectMenu function Version ---- 2.0.5 - Add parameter tryVertical to options - Some minor modification Version ---- 2.0.1 - Add parameter successTimeout to options - Add parameter codeRepetition to options Version ---- 2.0.0 - Add UPC-A, UPC-E support, result function return value changed! Version ---- 1.9.1 - Add default cameraindex parameter to buildSelectMenu, optional Version ---- 1.9.0 - Add function: decode image from url Version ---- 1.8.0 - Add function: decode local image Version ---- 1.7.0 - Add jquery version (WebCodeCamJQuery) Version ---- 1.5.0 - Optimized for all modern browsers - Refactor functions Version ---- 1.0.0 - Very simple usage - Some option for optimal result - Quick implementation Included decoders ----------- barcode decoder ([DecoderWorker.js]) qr-decoder ([qrcodelib.js]) Required HTML & Javascript example -------------- ```sh <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Demo</title> </head> <body> <h3>Simple initialization with default settings</h3> <hr> <canvas></canvas> <hr> <ul></ul> <script type="text/javascript" src="js/qrcodelib.js"></script> <script type="text/javascript" src="js/webcodecamjs.js"></script> <!-- Using jquery version: <script type="text/javascript" src="js/jquery.js"></script> <script type="text/javascript" src="js/qrcodelib.js"></script> <script type="text/javascript" src="js/webcodecamjquery.js"></script> --> <script type="text/javascript"> var txt = "innerText" in HTMLElement.prototype ? "innerText" : "textContent"; var arg = { resultFunction: function(result) { /* result.format: code format, result.code: decoded string, result.imgData: decoded image data */ var aChild = document.createElement('li'); aChild[txt] = result.format + ': ' + result.code; document.querySelector('body').appendChild(aChild); } }; /* -------------------------------------- Available parameters --------------------------------------*/ var options = { DecodeQRCodeRate: 5, // null to disable OR int > 0 ! DecodeBarCodeRate: 5, // null to disable OR int > 0 ! successTimeout: 500, // delay time when decoding is succeed codeRepetition: true, // accept code repetition true or false tryVertical: true, // try decoding vertically positioned barcode true or false frameRate: 15, // 1 - 25 width: 320, // canvas width height: 240, // canvas height constraints: { // default constraints video: { mandatory: { maxWidth: 1280, maxHeight: 720 }, optional: [{ sourceId: true }] }, audio: false }, flipVertical: false, // boolean flipHorizontal: false, // boolean zoom: -1, // if zoom = -1, auto zoom for optimal resolution else int beep: 'audio/beep.mp3', // string, audio file location decoderWorker: 'js/DecoderWorker.js', // string, DecoderWorker file location brightness: 0, // int autoBrightnessValue: false, // functional when value autoBrightnessValue is int grayScale: false, // boolean contrast: 0, // int threshold: 0, // int sharpness: [], // to On declare matrix, example for sharpness -> [0, -1, 0, -1, 5, -1, 0, -1, 0] resultFunction: function(result) { /* result.format: code format, result.code: decoded string, result.imgData: decoded image data */ alert(result.code); }, cameraSuccess: function(stream) { //callback funtion to camera success console.log('cameraSuccess'); }, canPlayFunction: function() { //callback funtion to can play console.log('canPlayFunction'); }, getDevicesError: function(error) { //callback funtion to get Devices error console.log(error); }, getUserMediaError: function(error) { //callback funtion to get usermedia error console.log(error); }, cameraError: function(error) { //callback funtion to camera error console.log(error); } }; /*---------------------------- Example initializations Javascript version ----------------------------*/ new WebCodeCamJS("canvas").init(arg); /* OR */ var canvas = document.querySelector('#webcodecam-canvas'); new WebCodeCamJS(canvas).init(); /* OR */ new WebCodeCamJS('#webcodecam-canvas').init(); /*------------------------ Example initializations jquery & Javascript version ------------------------*/ var decoder = new WebCodeCamJS('#webcodecam-canvas'); var decoder = $("#webcodecam-canvas").WebCodeCamJQuery(args).data().plugin_WebCodeCamJQuery; decoder.buildSelectMenu('#camera-select', sel); //sel : default camera optional /* Chrome & MS Edge: build select menu * Firefox: the default camera initializes, return decoder object */ //simple initialization decoder.init(); /* Select environment camera if available */ decoder.buildSelectMenu('#camera-select', 'environment|back').init(args); /* Select user camera if available */ decoder.buildSelectMenu('#camera-select', 'user|front').init(args); /* Select camera by name */ decoder.buildSelectMenu('#camera-select', 'facecam').init(args); /* Select first camera */ decoder.buildSelectMenu('#camera-select', 0).init(args); /* Select environment camera if available, without visible select menu*/ decoder.buildSelectMenu(document.createElement('select'), 'environment|back').init().play(); /* --------------------------------------- Available Functions: ----------------------------------------*/ /* camera stop & delete stream */ decoder.stop(); /* camera play, restore process */ decoder.play(); /* get current image from camera */ decoder.getLastImageSrc(); /* decode local image */ /* if url is defined download image before staring open process */ decoder.decodeLocalImage(url); /* get optimal zoom */ decoder.getOptimalZoom(); /* Configurable options */ decoder.options['parameter']; /* Example: ** decoder.options.brightness = 20; - set brightness to 20 ** decoder.options.DecodeQRCodeRate = null; - disable qrcode decoder */ </script> </body> </html> ``` License ---- MIT Author: Tóth András --- http://atandrastoth.co.uk/ 2015-06-10 [Homepage]:http://atandrastoth.co.uk/main/pages/plugins/webcodecamjs/ [WebCodeCamJS]:https://andrastoth.github.io/webcodecamjs/ [DecoderWorker.js]:https://github.com/EddieLa/BarcodeReader [qrcodelib.js]:https://github.com/LazarSoft/jsqrcode