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// Last time updated at Fri Jan 08 2016 14:06 |
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// getUserMedia hacks from git/webrtc/adapter; |
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// removed redundant code |
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// A-to-Zee, all copyrights goes to: |
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// https://github.com/webrtc/adapter/blob/master/LICENSE.md |
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// Used to detect browser and version for our purposes |
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var getUserMedia = null; |
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var webrtcDetectedBrowser = null; |
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var webrtcDetectedVersion = null; |
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var webrtcMinimumVersion = null; |
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var webrtcUtils = window.webrtcUtils || {}; |
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if(!webrtcUtils.enableLogs) { |
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webrtcUtils.enableLogs = true; |
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} |
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if(!webrtcUtils.log) { |
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webrtcUtils.log = function() { |
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if(!webrtcUtils.enableLogs) { |
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return; |
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} |
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// suppress console.log output when being included as a module. |
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if (typeof module !== 'undefined' || |
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typeof require === 'function' && typeof define === 'function') { |
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return; |
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} |
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console.log.apply(console, arguments); |
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}; |
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} |
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if(!webrtcUtils.extractVersion) { |
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webrtcUtils.extractVersion = function(uastring, expr, pos) { |
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var match = uastring.match(expr); |
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return match && match.length >= pos && parseInt(match[pos], 10); |
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}; |
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} |
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if (typeof window === 'object') { |
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if (window.HTMLMediaElement && |
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!('srcObject' in window.HTMLMediaElement.prototype)) { |
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// Shim the srcObject property, once, when HTMLMediaElement is found. |
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Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', { |
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get: function() { |
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// If prefixed srcObject property exists, return it. |
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// Otherwise use the shimmed property, _srcObject |
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return 'mozSrcObject' in this ? this.mozSrcObject : this._srcObject; |
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}, |
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set: function(stream) { |
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if ('mozSrcObject' in this) { |
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this.mozSrcObject = stream; |
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} else { |
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// Use _srcObject as a private property for this shim |
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this._srcObject = stream; |
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// TODO: revokeObjectUrl(this.src) when !stream to release resources? |
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this.src = stream ? URL.createObjectURL(stream) : null; |
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} |
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} |
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}); |
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} |
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// Proxy existing globals |
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getUserMedia = window.navigator && window.navigator.getUserMedia; |
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} |
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if (typeof window === 'undefined' || !window.navigator) { |
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webrtcDetectedBrowser = 'not a browser'; |
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} else if (navigator.mozGetUserMedia && window.mozRTCPeerConnection) { |
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webrtcDetectedBrowser = 'firefox'; |
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// the detected firefox version. |
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webrtcDetectedVersion = webrtcUtils.extractVersion(navigator.userAgent, |
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/Firefox\/([0-9]+)\./, 1); |
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// the minimum firefox version still supported by adapter. |
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webrtcMinimumVersion = 31; |
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// getUserMedia constraints shim. |
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getUserMedia = function(constraints, onSuccess, onError) { |
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var constraintsToFF37 = function(c) { |
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if (typeof c !== 'object' || c.require) { |
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return c; |
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} |
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var require = []; |
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Object.keys(c).forEach(function(key) { |
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if (key === 'require' || key === 'advanced' || key === 'mediaSource') { |
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return; |
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} |
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var r = c[key] = (typeof c[key] === 'object') ? |
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c[key] : { |
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ideal: c[key] |
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}; |
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if (r.min !== undefined || |
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r.max !== undefined || r.exact !== undefined) { |
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require.push(key); |
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} |
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if (r.exact !== undefined) { |
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if (typeof r.exact === 'number') { |
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r.min = r.max = r.exact; |
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} else { |
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c[key] = r.exact; |
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} |
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delete r.exact; |
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} |
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if (r.ideal !== undefined) { |
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c.advanced = c.advanced || []; |
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var oc = {}; |
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if (typeof r.ideal === 'number') { |
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oc[key] = { |
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min: r.ideal, |
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max: r.ideal |
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}; |
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} else { |
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oc[key] = r.ideal; |
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} |
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c.advanced.push(oc); |
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delete r.ideal; |
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if (!Object.keys(r).length) { |
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delete c[key]; |
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} |
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} |
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}); |
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if (require.length) { |
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c.require = require; |
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} |
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return c; |
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}; |
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if (webrtcDetectedVersion < 38) { |
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webrtcUtils.log('spec: ' + JSON.stringify(constraints)); |
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if (constraints.audio) { |
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constraints.audio = constraintsToFF37(constraints.audio); |
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} |
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if (constraints.video) { |
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constraints.video = constraintsToFF37(constraints.video); |
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} |
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webrtcUtils.log('ff37: ' + JSON.stringify(constraints)); |
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} |
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return navigator.mozGetUserMedia(constraints, onSuccess, onError); |
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}; |
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navigator.getUserMedia = getUserMedia; |
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// Shim for mediaDevices on older versions. |
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if (!navigator.mediaDevices) { |
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navigator.mediaDevices = { |
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getUserMedia: requestUserMedia, |
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addEventListener: function() {}, |
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removeEventListener: function() {} |
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}; |
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} |
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navigator.mediaDevices.enumerateDevices = |
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navigator.mediaDevices.enumerateDevices || function() { |
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return new Promise(function(resolve) { |
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var infos = [{ |
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kind: 'audioinput', |
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deviceId: 'default', |
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label: '', |
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groupId: '' |
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}, { |
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kind: 'videoinput', |
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deviceId: 'default', |
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label: '', |
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groupId: '' |
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}]; |
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resolve(infos); |
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}); |
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}; |
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if (webrtcDetectedVersion < 41) { |
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// Work around http://bugzil.la/1169665 |
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var orgEnumerateDevices = |
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navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices); |
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navigator.mediaDevices.enumerateDevices = function() { |
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return orgEnumerateDevices().then(undefined, function(e) { |
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if (e.name === 'NotFoundError') { |
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return []; |
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} |
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throw e; |
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}); |
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}; |
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} |
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} else if (navigator.webkitGetUserMedia && window.webkitRTCPeerConnection) { |
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webrtcDetectedBrowser = 'chrome'; |
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webrtcDetectedVersion = webrtcUtils.extractVersion(navigator.userAgent, |
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/Chrom(e|ium)\/([0-9]+)\./, 2); |
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// the minimum chrome version still supported by adapter. |
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webrtcMinimumVersion = 38; |
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// getUserMedia constraints shim. |
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var constraintsToChrome = function(c) { |
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if (typeof c !== 'object' || c.mandatory || c.optional) { |
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return c; |
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} |
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var cc = {}; |
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Object.keys(c).forEach(function(key) { |
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if (key === 'require' || key === 'advanced' || key === 'mediaSource') { |
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return; |
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} |
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var r = (typeof c[key] === 'object') ? c[key] : { |
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ideal: c[key] |
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}; |
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if (r.exact !== undefined && typeof r.exact === 'number') { |
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r.min = r.max = r.exact; |
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} |
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var oldname = function(prefix, name) { |
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if (prefix) { |
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return prefix + name.charAt(0).toUpperCase() + name.slice(1); |
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} |
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return (name === 'deviceId') ? 'sourceId' : name; |
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}; |
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if (r.ideal !== undefined) { |
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cc.optional = cc.optional || []; |
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var oc = {}; |
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if (typeof r.ideal === 'number') { |
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oc[oldname('min', key)] = r.ideal; |
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cc.optional.push(oc); |
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oc = {}; |
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oc[oldname('max', key)] = r.ideal; |
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cc.optional.push(oc); |
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} else { |
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oc[oldname('', key)] = r.ideal; |
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cc.optional.push(oc); |
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} |
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} |
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if (r.exact !== undefined && typeof r.exact !== 'number') { |
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cc.mandatory = cc.mandatory || {}; |
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cc.mandatory[oldname('', key)] = r.exact; |
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} else { |
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['min', 'max'].forEach(function(mix) { |
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if (r[mix] !== undefined) { |
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cc.mandatory = cc.mandatory || {}; |
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cc.mandatory[oldname(mix, key)] = r[mix]; |
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} |
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}); |
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} |
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}); |
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if (c.advanced) { |
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cc.optional = (cc.optional || []).concat(c.advanced); |
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} |
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return cc; |
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}; |
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getUserMedia = function(constraints, onSuccess, onError) { |
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if (constraints.audio) { |
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constraints.audio = constraintsToChrome(constraints.audio); |
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} |
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if (constraints.video) { |
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constraints.video = constraintsToChrome(constraints.video); |
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} |
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webrtcUtils.log('chrome: ' + JSON.stringify(constraints)); |
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return navigator.webkitGetUserMedia(constraints, onSuccess, onError); |
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}; |
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navigator.getUserMedia = getUserMedia; |
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if (!navigator.mediaDevices) { |
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navigator.mediaDevices = { |
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getUserMedia: requestUserMedia |
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}; |
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} |
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// A shim for getUserMedia method on the mediaDevices object. |
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// TODO(KaptenJansson) remove once implemented in Chrome stable. |
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if (!navigator.mediaDevices.getUserMedia) { |
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navigator.mediaDevices.getUserMedia = function(constraints) { |
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return requestUserMedia(constraints); |
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}; |
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} else { |
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// Even though Chrome 45 has navigator.mediaDevices and a getUserMedia |
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// function which returns a Promise, it does not accept spec-style |
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// constraints. |
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275
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var origGetUserMedia = navigator.mediaDevices.getUserMedia. |
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276
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bind(navigator.mediaDevices); |
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navigator.mediaDevices.getUserMedia = function(c) { |
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webrtcUtils.log('spec: ' + JSON.stringify(c)); // whitespace for alignment |
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c.audio = constraintsToChrome(c.audio); |
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280
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c.video = constraintsToChrome(c.video); |
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webrtcUtils.log('chrome: ' + JSON.stringify(c)); |
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return origGetUserMedia(c); |
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}; |
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284
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} |
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285
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286
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// Dummy devicechange event methods. |
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287
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// TODO(KaptenJansson) remove once implemented in Chrome stable. |
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288
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if (typeof navigator.mediaDevices.addEventListener === 'undefined') { |
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289
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navigator.mediaDevices.addEventListener = function() { |
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290
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webrtcUtils.log('Dummy mediaDevices.addEventListener called.'); |
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291
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}; |
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292
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} |
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293
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if (typeof navigator.mediaDevices.removeEventListener === 'undefined') { |
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294
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navigator.mediaDevices.removeEventListener = function() { |
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295
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webrtcUtils.log('Dummy mediaDevices.removeEventListener called.'); |
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296
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}; |
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297
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} |
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298
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299
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} else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { |
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300
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webrtcUtils.log('This appears to be Edge'); |
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301
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webrtcDetectedBrowser = 'edge'; |
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302
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303
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webrtcDetectedVersion = webrtcUtils.extractVersion(navigator.userAgent, /Edge\/(\d+).(\d+)$/, 2); |
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304
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305
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// the minimum version still supported by adapter. |
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306
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webrtcMinimumVersion = 12; |
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307
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} else { |
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308
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webrtcUtils.log('Browser does not appear to be WebRTC-capable'); |
|
309
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|
|
} |
|
310
|
|
|
|
|
311
|
|
|
// Returns the result of getUserMedia as a Promise. |
|
312
|
|
|
function requestUserMedia(constraints) { |
|
313
|
|
|
return new Promise(function(resolve, reject) { |
|
314
|
|
|
getUserMedia(constraints, resolve, reject); |
|
315
|
|
|
}); |
|
316
|
|
|
} |
|
317
|
|
|
|
|
318
|
|
|
if (typeof module !== 'undefined') { |
|
319
|
|
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module.exports = { |
|
320
|
|
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getUserMedia: getUserMedia, |
|
321
|
|
|
webrtcDetectedBrowser: webrtcDetectedBrowser, |
|
322
|
|
|
webrtcDetectedVersion: webrtcDetectedVersion, |
|
323
|
|
|
webrtcMinimumVersion: webrtcMinimumVersion, |
|
324
|
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webrtcUtils: webrtcUtils |
|
325
|
|
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}; |
|
326
|
|
|
} else if ((typeof require === 'function') && (typeof define === 'function')) { |
|
|
|
|
|
|
327
|
|
|
// Expose objects and functions when RequireJS is doing the loading. |
|
328
|
|
|
define([], function() { |
|
329
|
|
|
return { |
|
330
|
|
|
getUserMedia: getUserMedia, |
|
331
|
|
|
webrtcDetectedBrowser: webrtcDetectedBrowser, |
|
332
|
|
|
webrtcDetectedVersion: webrtcDetectedVersion, |
|
333
|
|
|
webrtcMinimumVersion: webrtcMinimumVersion, |
|
334
|
|
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webrtcUtils: webrtcUtils |
|
335
|
|
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}; |
|
336
|
|
|
}); |
|
337
|
|
|
} |
|
338
|
|
|
|
blindsidenetworks /
moodle-tinymce_recordrtc
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This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.
To learn more about declaring variables in Javascript, see the MDN.