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718 lines
24 KiB
718 lines
24 KiB
// WebcamJS v1.0.6
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// Webcam library for capturing JPEG/PNG images in JavaScript
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// Attempts getUserMedia, falls back to Flash
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// Author: Joseph Huckaby: http://github.com/jhuckaby
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// Based on JPEGCam: http://code.google.com/p/jpegcam/
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// Copyright (c) 2012 - 2015 Joseph Huckaby
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// Licensed under the MIT License
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(function(window) {
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var Webcam = {
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version: '1.0.6',
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// globals
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protocol: location.protocol.match(/https/i) ? 'https' : 'http',
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swfURL: '', // URI to webcam.swf movie (defaults to the js location)
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loaded: false, // true when webcam movie finishes loading
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live: false, // true when webcam is initialized and ready to snap
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userMedia: true, // true when getUserMedia is supported natively
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params: {
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width: 0,
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height: 0,
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dest_width: 0, // size of captured image
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dest_height: 0, // these default to width/height
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image_format: 'jpeg', // image format (may be jpeg or png)
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jpeg_quality: 90, // jpeg image quality from 0 (worst) to 100 (best)
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force_flash: false, // force flash mode,
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flip_horiz: false, // flip image horiz (mirror mode)
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fps: 30, // camera frames per second
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upload_name: 'webcam', // name of file in upload post data
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constraints: null // custom user media constraints
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},
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hooks: {}, // callback hook functions
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init: function() {
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// initialize, check for getUserMedia support
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var self = this;
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// Setup getUserMedia, with polyfill for older browsers
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// Adapted from: https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia
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this.mediaDevices = (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) ?
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navigator.mediaDevices : ((navigator.mozGetUserMedia || navigator.webkitGetUserMedia) ? {
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getUserMedia: function(c) {
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return new Promise(function(y, n) {
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(navigator.mozGetUserMedia ||
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navigator.webkitGetUserMedia).call(navigator, c, y, n);
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});
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}
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} : null);
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window.URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
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this.userMedia = this.userMedia && !!this.mediaDevices && !!window.URL;
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// Older versions of firefox (< 21) apparently claim support but user media does not actually work
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if (navigator.userAgent.match(/Firefox\D+(\d+)/)) {
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if (parseInt(RegExp.$1, 10) < 21) this.userMedia = null;
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}
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// Make sure media stream is closed when navigating away from page
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if (this.userMedia) {
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window.addEventListener( 'beforeunload', function(event) {
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self.reset();
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} );
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}
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},
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attach: function(elem) {
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// create webcam preview and attach to DOM element
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// pass in actual DOM reference, ID, or CSS selector
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if (typeof(elem) == 'string') {
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elem = document.getElementById(elem) || document.querySelector(elem);
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}
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if (!elem) {
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return this.dispatch('error', "Could not locate DOM element to attach to.");
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}
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this.container = elem;
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elem.innerHTML = ''; // start with empty element
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// insert "peg" so we can insert our preview canvas adjacent to it later on
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var peg = document.createElement('div');
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elem.appendChild( peg );
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this.peg = peg;
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// set width/height if not already set
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if (!this.params.width) this.params.width = elem.offsetWidth;
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if (!this.params.height) this.params.height = elem.offsetHeight;
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// set defaults for dest_width / dest_height if not set
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if (!this.params.dest_width) this.params.dest_width = this.params.width;
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if (!this.params.dest_height) this.params.dest_height = this.params.height;
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// if force_flash is set, disable userMedia
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if (this.params.force_flash) this.userMedia = null;
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// check for default fps
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if (typeof this.params.fps !== "number") this.params.fps = 30;
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// adjust scale if dest_width or dest_height is different
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var scaleX = this.params.width / this.params.dest_width;
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var scaleY = this.params.height / this.params.dest_height;
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if (this.userMedia) {
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// setup webcam video container
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var video = document.createElement('video');
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video.setAttribute('autoplay', 'autoplay');
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video.style.width = '' + this.params.dest_width + 'px';
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video.style.height = '' + this.params.dest_height + 'px';
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if ((scaleX != 1.0) || (scaleY != 1.0)) {
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elem.style.overflow = 'hidden';
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video.style.webkitTransformOrigin = '0px 0px';
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video.style.mozTransformOrigin = '0px 0px';
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video.style.msTransformOrigin = '0px 0px';
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video.style.oTransformOrigin = '0px 0px';
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video.style.transformOrigin = '0px 0px';
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video.style.webkitTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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video.style.mozTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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video.style.msTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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video.style.oTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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video.style.transform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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}
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// add video element to dom
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elem.appendChild( video );
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this.video = video;
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// ask user for access to their camera
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var self = this;
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this.mediaDevices.getUserMedia({
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"audio": false,
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"video": this.params.constraints || {
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mandatory: {
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minWidth: this.params.dest_width,
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minHeight: this.params.dest_height
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}
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}
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})
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.then( function(stream) {
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// got access, attach stream to video
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video.src = window.URL.createObjectURL( stream ) || stream;
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self.stream = stream;
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self.loaded = true;
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self.live = true;
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self.dispatch('load');
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self.dispatch('live');
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self.flip();
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})
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.catch( function(err) {
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return self.dispatch('error', "Could not access webcam: " + err.name + ": " + err.message, err);
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});
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}
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else {
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// flash fallback
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window.Webcam = Webcam; // needed for flash-to-js interface
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var div = document.createElement('div');
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div.innerHTML = this.getSWFHTML();
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elem.appendChild( div );
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}
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// setup final crop for live preview
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if (this.params.crop_width && this.params.crop_height) {
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var scaled_crop_width = Math.floor( this.params.crop_width * scaleX );
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var scaled_crop_height = Math.floor( this.params.crop_height * scaleY );
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elem.style.width = '' + scaled_crop_width + 'px';
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elem.style.height = '' + scaled_crop_height + 'px';
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elem.style.overflow = 'hidden';
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elem.scrollLeft = Math.floor( (this.params.width / 2) - (scaled_crop_width / 2) );
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elem.scrollTop = Math.floor( (this.params.height / 2) - (scaled_crop_height / 2) );
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}
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else {
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// no crop, set size to desired
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elem.style.width = '' + this.params.width + 'px';
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elem.style.height = '' + this.params.height + 'px';
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}
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},
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reset: function() {
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// shutdown camera, reset to potentially attach again
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if (this.preview_active) this.unfreeze();
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// attempt to fix issue #64
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this.unflip();
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if (this.userMedia) {
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if (this.stream) {
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if (this.stream.getVideoTracks) {
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// get video track to call stop on it
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var tracks = this.stream.getVideoTracks();
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if (tracks && tracks[0] && tracks[0].stop) tracks[0].stop();
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}
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else if (this.stream.stop) {
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// deprecated, may be removed in future
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this.stream.stop();
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}
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}
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delete this.stream;
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delete this.video;
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}
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if (this.container) {
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this.container.innerHTML = '';
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delete this.container;
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}
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this.loaded = false;
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this.live = false;
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},
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set: function() {
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// set one or more params
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// variable argument list: 1 param = hash, 2 params = key, value
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if (arguments.length == 1) {
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for (var key in arguments[0]) {
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this.params[key] = arguments[0][key];
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}
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}
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else {
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this.params[ arguments[0] ] = arguments[1];
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}
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},
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on: function(name, callback) {
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// set callback hook
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name = name.replace(/^on/i, '').toLowerCase();
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if (!this.hooks[name]) this.hooks[name] = [];
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this.hooks[name].push( callback );
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},
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off: function(name, callback) {
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// remove callback hook
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name = name.replace(/^on/i, '').toLowerCase();
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if (this.hooks[name]) {
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if (callback) {
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// remove one selected callback from list
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var idx = this.hooks[name].indexOf(callback);
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if (idx > -1) this.hooks[name].splice(idx, 1);
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}
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else {
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// no callback specified, so clear all
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this.hooks[name] = [];
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}
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}
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},
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dispatch: function() {
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// fire hook callback, passing optional value to it
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var name = arguments[0].replace(/^on/i, '').toLowerCase();
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var args = Array.prototype.slice.call(arguments, 1);
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if (this.hooks[name] && this.hooks[name].length) {
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for (var idx = 0, len = this.hooks[name].length; idx < len; idx++) {
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var hook = this.hooks[name][idx];
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if (typeof(hook) == 'function') {
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// callback is function reference, call directly
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hook.apply(this, args);
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}
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else if ((typeof(hook) == 'object') && (hook.length == 2)) {
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// callback is PHP-style object instance method
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hook[0][hook[1]].apply(hook[0], args);
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}
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else if (window[hook]) {
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// callback is global function name
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window[ hook ].apply(window, args);
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}
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} // loop
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return true;
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}
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else if (name == 'error') {
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// default error handler if no custom one specified
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alert("Webcam.js Error: " + args[0]);
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}
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return false; // no hook defined
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},
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setSWFLocation: function(url) {
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// set location of SWF movie (defaults to webcam.swf in cwd)
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this.swfURL = url;
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},
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detectFlash: function() {
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// return true if browser supports flash, false otherwise
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// Code snippet borrowed from: https://github.com/swfobject/swfobject
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var SHOCKWAVE_FLASH = "Shockwave Flash",
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SHOCKWAVE_FLASH_AX = "ShockwaveFlash.ShockwaveFlash",
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FLASH_MIME_TYPE = "application/x-shockwave-flash",
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win = window,
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nav = navigator,
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hasFlash = false;
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if (typeof nav.plugins !== "undefined" && typeof nav.plugins[SHOCKWAVE_FLASH] === "object") {
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var desc = nav.plugins[SHOCKWAVE_FLASH].description;
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if (desc && (typeof nav.mimeTypes !== "undefined" && nav.mimeTypes[FLASH_MIME_TYPE] && nav.mimeTypes[FLASH_MIME_TYPE].enabledPlugin)) {
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hasFlash = true;
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}
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}
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else if (typeof win.ActiveXObject !== "undefined") {
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try {
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var ax = new ActiveXObject(SHOCKWAVE_FLASH_AX);
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if (ax) {
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var ver = ax.GetVariable("$version");
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if (ver) hasFlash = true;
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}
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}
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catch (e) {;}
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}
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return hasFlash;
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},
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getSWFHTML: function() {
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// Return HTML for embedding flash based webcam capture movie
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var html = '';
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// make sure we aren't running locally (flash doesn't work)
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if (location.protocol.match(/file/)) {
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this.dispatch('error', "Flash does not work from local disk. Please run from a web server.");
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return '<h3 style="color:red">ERROR: the Webcam.js Flash fallback does not work from local disk. Please run it from a web server.</h3>';
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}
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// make sure we have flash
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if (!this.detectFlash()) {
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this.dispatch('error', "Adobe Flash Player not found. Please install from get.adobe.com/flashplayer and try again.");
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return '<h3 style="color:red">ERROR: No Adobe Flash Player detected. Webcam.js relies on Flash for browsers that do not support getUserMedia (like yours).</h3>';
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}
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// set default swfURL if not explicitly set
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if (!this.swfURL) {
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// find our script tag, and use that base URL
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var base_url = '';
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var scpts = document.getElementsByTagName('script');
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for (var idx = 0, len = scpts.length; idx < len; idx++) {
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var src = scpts[idx].getAttribute('src');
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if (src && src.match(/\/webcam(\.min)?\.js/)) {
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base_url = src.replace(/\/webcam(\.min)?\.js.*$/, '');
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idx = len;
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}
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}
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if (base_url) this.swfURL = base_url + '/webcam.swf';
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else this.swfURL = 'webcam.swf';
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}
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// if this is the user's first visit, set flashvar so flash privacy settings panel is shown first
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if (window.localStorage && !localStorage.getItem('visited')) {
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this.params.new_user = 1;
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localStorage.setItem('visited', 1);
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}
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// construct flashvars string
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var flashvars = '';
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for (var key in this.params) {
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if (flashvars) flashvars += '&';
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flashvars += key + '=' + escape(this.params[key]);
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}
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// construct object/embed tag
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html += '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" type="application/x-shockwave-flash" codebase="'+this.protocol+'://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="'+this.params.width+'" height="'+this.params.height+'" id="webcam_movie_obj" align="middle"><param name="wmode" value="opaque" /><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="'+this.swfURL+'" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="'+flashvars+'"/><embed id="webcam_movie_embed" src="'+this.swfURL+'" wmode="opaque" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="'+this.params.width+'" height="'+this.params.height+'" name="webcam_movie_embed" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="'+flashvars+'"></embed></object>';
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return html;
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},
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getMovie: function() {
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// get reference to movie object/embed in DOM
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if (!this.loaded) return this.dispatch('error', "Flash Movie is not loaded yet");
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var movie = document.getElementById('webcam_movie_obj');
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if (!movie || !movie._snap) movie = document.getElementById('webcam_movie_embed');
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if (!movie) this.dispatch('error', "Cannot locate Flash movie in DOM");
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return movie;
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},
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freeze: function() {
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// show preview, freeze camera
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var self = this;
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var params = this.params;
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// kill preview if already active
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if (this.preview_active) this.unfreeze();
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// determine scale factor
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var scaleX = this.params.width / this.params.dest_width;
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var scaleY = this.params.height / this.params.dest_height;
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// must unflip container as preview canvas will be pre-flipped
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this.unflip();
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// calc final size of image
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var final_width = params.crop_width || params.dest_width;
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var final_height = params.crop_height || params.dest_height;
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// create canvas for holding preview
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var preview_canvas = document.createElement('canvas');
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preview_canvas.width = final_width;
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preview_canvas.height = final_height;
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var preview_context = preview_canvas.getContext('2d');
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// save for later use
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this.preview_canvas = preview_canvas;
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this.preview_context = preview_context;
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// scale for preview size
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if ((scaleX != 1.0) || (scaleY != 1.0)) {
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preview_canvas.style.webkitTransformOrigin = '0px 0px';
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preview_canvas.style.mozTransformOrigin = '0px 0px';
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preview_canvas.style.msTransformOrigin = '0px 0px';
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preview_canvas.style.oTransformOrigin = '0px 0px';
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preview_canvas.style.transformOrigin = '0px 0px';
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preview_canvas.style.webkitTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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preview_canvas.style.mozTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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preview_canvas.style.msTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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preview_canvas.style.oTransform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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preview_canvas.style.transform = 'scaleX('+scaleX+') scaleY('+scaleY+')';
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}
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// take snapshot, but fire our own callback
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this.snap( function() {
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// add preview image to dom, adjust for crop
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preview_canvas.style.position = 'relative';
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preview_canvas.style.left = '' + self.container.scrollLeft + 'px';
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preview_canvas.style.top = '' + self.container.scrollTop + 'px';
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self.container.insertBefore( preview_canvas, self.peg );
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self.container.style.overflow = 'hidden';
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// set flag for user capture (use preview)
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self.preview_active = true;
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}, preview_canvas );
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},
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unfreeze: function() {
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// cancel preview and resume live video feed
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if (this.preview_active) {
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// remove preview canvas
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this.container.removeChild( this.preview_canvas );
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delete this.preview_context;
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delete this.preview_canvas;
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// unflag
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this.preview_active = false;
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// re-flip if we unflipped before
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this.flip();
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}
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},
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flip: function() {
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// flip container horiz (mirror mode) if desired
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if (this.params.flip_horiz) {
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var sty = this.container.style;
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sty.webkitTransform = 'scaleX(-1)';
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sty.mozTransform = 'scaleX(-1)';
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sty.msTransform = 'scaleX(-1)';
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sty.oTransform = 'scaleX(-1)';
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sty.transform = 'scaleX(-1)';
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sty.filter = 'FlipH';
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sty.msFilter = 'FlipH';
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}
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},
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unflip: function() {
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// unflip container horiz (mirror mode) if desired
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if (this.params.flip_horiz) {
|
|
var sty = this.container.style;
|
|
sty.webkitTransform = 'scaleX(1)';
|
|
sty.mozTransform = 'scaleX(1)';
|
|
sty.msTransform = 'scaleX(1)';
|
|
sty.oTransform = 'scaleX(1)';
|
|
sty.transform = 'scaleX(1)';
|
|
sty.filter = '';
|
|
sty.msFilter = '';
|
|
}
|
|
},
|
|
|
|
savePreview: function(user_callback, user_canvas) {
|
|
// save preview freeze and fire user callback
|
|
var params = this.params;
|
|
var canvas = this.preview_canvas;
|
|
var context = this.preview_context;
|
|
|
|
// render to user canvas if desired
|
|
if (user_canvas) {
|
|
var user_context = user_canvas.getContext('2d');
|
|
user_context.drawImage( canvas, 0, 0 );
|
|
}
|
|
|
|
// fire user callback if desired
|
|
user_callback(
|
|
user_canvas ? null : canvas.toDataURL('image/' + params.image_format, params.jpeg_quality / 100 ),
|
|
canvas,
|
|
context
|
|
);
|
|
|
|
// remove preview
|
|
this.unfreeze();
|
|
},
|
|
|
|
snap: function(user_callback, user_canvas) {
|
|
// take snapshot and return image data uri
|
|
var self = this;
|
|
var params = this.params;
|
|
|
|
if (!this.loaded) return this.dispatch('error', "Webcam is not loaded yet");
|
|
// if (!this.live) return this.dispatch('error', "Webcam is not live yet");
|
|
if (!user_callback) return this.dispatch('error', "Please provide a callback function or canvas to snap()");
|
|
|
|
// if we have an active preview freeze, use that
|
|
if (this.preview_active) {
|
|
this.savePreview( user_callback, user_canvas );
|
|
return null;
|
|
}
|
|
|
|
// create offscreen canvas element to hold pixels
|
|
var canvas = document.createElement('canvas');
|
|
canvas.width = this.params.dest_width;
|
|
canvas.height = this.params.dest_height;
|
|
var context = canvas.getContext('2d');
|
|
|
|
// flip canvas horizontally if desired
|
|
if (this.params.flip_horiz) {
|
|
context.translate( params.dest_width, 0 );
|
|
context.scale( -1, 1 );
|
|
}
|
|
|
|
// create inline function, called after image load (flash) or immediately (native)
|
|
var func = function() {
|
|
// render image if needed (flash)
|
|
if (this.src && this.width && this.height) {
|
|
context.drawImage(this, 0, 0, params.dest_width, params.dest_height);
|
|
}
|
|
|
|
// crop if desired
|
|
if (params.crop_width && params.crop_height) {
|
|
var crop_canvas = document.createElement('canvas');
|
|
crop_canvas.width = params.crop_width;
|
|
crop_canvas.height = params.crop_height;
|
|
var crop_context = crop_canvas.getContext('2d');
|
|
|
|
crop_context.drawImage( canvas,
|
|
Math.floor( (params.dest_width / 2) - (params.crop_width / 2) ),
|
|
Math.floor( (params.dest_height / 2) - (params.crop_height / 2) ),
|
|
params.crop_width,
|
|
params.crop_height,
|
|
0,
|
|
0,
|
|
params.crop_width,
|
|
params.crop_height
|
|
);
|
|
|
|
// swap canvases
|
|
context = crop_context;
|
|
canvas = crop_canvas;
|
|
}
|
|
|
|
// render to user canvas if desired
|
|
if (user_canvas) {
|
|
var user_context = user_canvas.getContext('2d');
|
|
user_context.drawImage( canvas, 0, 0 );
|
|
}
|
|
|
|
// fire user callback if desired
|
|
user_callback(
|
|
user_canvas ? null : canvas.toDataURL('image/' + params.image_format, params.jpeg_quality / 100 ),
|
|
canvas,
|
|
context
|
|
);
|
|
};
|
|
|
|
// grab image frame from userMedia or flash movie
|
|
if (this.userMedia) {
|
|
// native implementation
|
|
context.drawImage(this.video, 0, 0, this.params.dest_width, this.params.dest_height);
|
|
|
|
// fire callback right away
|
|
func();
|
|
}
|
|
else {
|
|
// flash fallback
|
|
var raw_data = this.getMovie()._snap();
|
|
|
|
// render to image, fire callback when complete
|
|
var img = new Image();
|
|
img.onload = func;
|
|
img.src = 'data:image/'+this.params.image_format+';base64,' + raw_data;
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
configure: function(panel) {
|
|
// open flash configuration panel -- specify tab name:
|
|
// "camera", "privacy", "default", "localStorage", "microphone", "settingsManager"
|
|
if (!panel) panel = "camera";
|
|
this.getMovie()._configure(panel);
|
|
},
|
|
|
|
flashNotify: function(type, msg) {
|
|
// receive notification from flash about event
|
|
switch (type) {
|
|
case 'flashLoadComplete':
|
|
// movie loaded successfully
|
|
this.loaded = true;
|
|
this.dispatch('load');
|
|
break;
|
|
|
|
case 'cameraLive':
|
|
// camera is live and ready to snap
|
|
this.live = true;
|
|
this.dispatch('live');
|
|
this.flip();
|
|
break;
|
|
|
|
case 'error':
|
|
// Flash error
|
|
this.dispatch('error', msg);
|
|
break;
|
|
|
|
default:
|
|
// catch-all event, just in case
|
|
// console.log("webcam flash_notify: " + type + ": " + msg);
|
|
break;
|
|
}
|
|
},
|
|
|
|
b64ToUint6: function(nChr) {
|
|
// convert base64 encoded character to 6-bit integer
|
|
// from: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Base64_encoding_and_decoding
|
|
return nChr > 64 && nChr < 91 ? nChr - 65
|
|
: nChr > 96 && nChr < 123 ? nChr - 71
|
|
: nChr > 47 && nChr < 58 ? nChr + 4
|
|
: nChr === 43 ? 62 : nChr === 47 ? 63 : 0;
|
|
},
|
|
|
|
base64DecToArr: function(sBase64, nBlocksSize) {
|
|
// convert base64 encoded string to Uintarray
|
|
// from: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Base64_encoding_and_decoding
|
|
var sB64Enc = sBase64.replace(/[^A-Za-z0-9\+\/]/g, ""), nInLen = sB64Enc.length,
|
|
nOutLen = nBlocksSize ? Math.ceil((nInLen * 3 + 1 >> 2) / nBlocksSize) * nBlocksSize : nInLen * 3 + 1 >> 2,
|
|
taBytes = new Uint8Array(nOutLen);
|
|
|
|
for (var nMod3, nMod4, nUint24 = 0, nOutIdx = 0, nInIdx = 0; nInIdx < nInLen; nInIdx++) {
|
|
nMod4 = nInIdx & 3;
|
|
nUint24 |= this.b64ToUint6(sB64Enc.charCodeAt(nInIdx)) << 18 - 6 * nMod4;
|
|
if (nMod4 === 3 || nInLen - nInIdx === 1) {
|
|
for (nMod3 = 0; nMod3 < 3 && nOutIdx < nOutLen; nMod3++, nOutIdx++) {
|
|
taBytes[nOutIdx] = nUint24 >>> (16 >>> nMod3 & 24) & 255;
|
|
}
|
|
nUint24 = 0;
|
|
}
|
|
}
|
|
return taBytes;
|
|
},
|
|
|
|
upload: function(image_data_uri, target_url, callback) {
|
|
// submit image data to server using binary AJAX
|
|
var form_elem_name = this.params.upload_name || 'webcam';
|
|
|
|
// detect image format from within image_data_uri
|
|
var image_fmt = '';
|
|
if (image_data_uri.match(/^data\:image\/(\w+)/))
|
|
image_fmt = RegExp.$1;
|
|
else
|
|
throw "Cannot locate image format in Data URI";
|
|
|
|
// extract raw base64 data from Data URI
|
|
var raw_image_data = image_data_uri.replace(/^data\:image\/\w+\;base64\,/, '');
|
|
|
|
// contruct use AJAX object
|
|
var http = new XMLHttpRequest();
|
|
http.open("POST", target_url, true);
|
|
|
|
// setup progress events
|
|
if (http.upload && http.upload.addEventListener) {
|
|
http.upload.addEventListener( 'progress', function(e) {
|
|
if (e.lengthComputable) {
|
|
var progress = e.loaded / e.total;
|
|
Webcam.dispatch('uploadProgress', progress, e);
|
|
}
|
|
}, false );
|
|
}
|
|
|
|
// completion handler
|
|
var self = this;
|
|
http.onload = function() {
|
|
if (callback) callback.apply( self, [http.status, http.responseText, http.statusText] );
|
|
Webcam.dispatch('uploadComplete', http.status, http.responseText, http.statusText);
|
|
};
|
|
|
|
// create a blob and decode our base64 to binary
|
|
var blob = new Blob( [ this.base64DecToArr(raw_image_data) ], {type: 'image/'+image_fmt} );
|
|
|
|
// stuff into a form, so servers can easily receive it as a standard file upload
|
|
var form = new FormData();
|
|
form.append( form_elem_name, blob, form_elem_name+"."+image_fmt.replace(/e/, '') );
|
|
|
|
// send data to server
|
|
http.send(form);
|
|
}
|
|
|
|
};
|
|
|
|
Webcam.init();
|
|
|
|
if (typeof define === 'function' && define.amd) {
|
|
define( function() { return Webcam; } );
|
|
}
|
|
else if (typeof module === 'object' && module.exports) {
|
|
module.exports = Webcam;
|
|
}
|
|
else {
|
|
window.Webcam = Webcam;
|
|
}
|
|
|
|
}(window));
|