| var RTCPeerConnection = null; |
| var getUserMedia = null; |
| var attachMediaStream = null; |
| var reattachMediaStream = null; |
| var webrtcDetectedBrowser = null; |
| var webrtcDetectedVersion = null; |
| |
| function trace(text) { |
| // This function is used for logging. |
| if (text[text.length - 1] == '\n') { |
| text = text.substring(0, text.length - 1); |
| } |
| console.log((performance.now() / 1000).toFixed(3) + ": " + text); |
| } |
| |
| if (navigator.mozGetUserMedia) { |
| console.log("This appears to be Firefox"); |
| |
| webrtcDetectedBrowser = "firefox"; |
| |
| webrtcDetectedVersion = |
| parseInt(navigator.userAgent.match(/Firefox\/([0-9]+)\./)[1]); |
| |
| // The RTCPeerConnection object. |
| RTCPeerConnection = mozRTCPeerConnection; |
| |
| // The RTCSessionDescription object. |
| RTCSessionDescription = mozRTCSessionDescription; |
| |
| // The RTCIceCandidate object. |
| RTCIceCandidate = mozRTCIceCandidate; |
| |
| // Get UserMedia (only difference is the prefix). |
| // Code from Adam Barth. |
| getUserMedia = navigator.mozGetUserMedia.bind(navigator); |
| |
| // Creates iceServer from the url for FF. |
| createIceServer = function(url, username, password) { |
| var iceServer = null; |
| var url_parts = url.split(':'); |
| if (url_parts[0].indexOf('stun') === 0) { |
| // Create iceServer with stun url. |
| iceServer = { 'url': url }; |
| } else if (url_parts[0].indexOf('turn') === 0 && |
| (url.indexOf('transport=udp') !== -1 || |
| url.indexOf('?transport') === -1)) { |
| // Create iceServer with turn url. |
| // Ignore the transport parameter from TURN url. |
| var turn_url_parts = url.split("?"); |
| iceServer = { 'url': turn_url_parts[0], |
| 'credential': password, |
| 'username': username }; |
| } |
| return iceServer; |
| }; |
| |
| // Attach a media stream to an element. |
| attachMediaStream = function(element, stream) { |
| console.log("Attaching media stream"); |
| element.mozSrcObject = stream; |
| element.play(); |
| }; |
| |
| reattachMediaStream = function(to, from) { |
| console.log("Reattaching media stream"); |
| to.mozSrcObject = from.mozSrcObject; |
| to.play(); |
| }; |
| |
| } else if (navigator.webkitGetUserMedia) { |
| console.log("This appears to be Chrome"); |
| |
| webrtcDetectedBrowser = "chrome"; |
| webrtcDetectedVersion = |
| parseInt(navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./)[2]); |
| |
| // Creates iceServer from the url for Chrome. |
| createIceServer = function(url, username, password) { |
| var iceServer = null; |
| var url_parts = url.split(':'); |
| if (url_parts[0].indexOf('stun') === 0) { |
| // Create iceServer with stun url. |
| iceServer = { 'url': url }; |
| } else if (url_parts[0].indexOf('turn') === 0) { |
| if (webrtcDetectedVersion < 28) { |
| // For pre-M28 chrome versions use old TURN format. |
| var url_turn_parts = url.split("turn:"); |
| iceServer = { 'url': 'turn:' + username + '@' + url_turn_parts[1], |
| 'credential': password }; |
| } else { |
| // For Chrome M28 & above use new TURN format. |
| iceServer = { 'url': url, |
| 'credential': password, |
| 'username': username }; |
| } |
| } |
| return iceServer; |
| }; |
| |
| // The RTCPeerConnection object. |
| RTCPeerConnection = webkitRTCPeerConnection; |
| |
| // Get UserMedia (only difference is the prefix). |
| // Code from Adam Barth. |
| getUserMedia = navigator.webkitGetUserMedia.bind(navigator); |
| |
| // Attach a media stream to an element. |
| attachMediaStream = function(element, stream) { |
| if (typeof element.srcObject !== 'undefined') { |
| element.srcObject = stream; |
| } else if (typeof element.mozSrcObject !== 'undefined') { |
| element.mozSrcObject = stream; |
| } else if (typeof element.src !== 'undefined') { |
| element.src = URL.createObjectURL(stream); |
| } else { |
| console.log('Error attaching stream to element.'); |
| } |
| }; |
| |
| reattachMediaStream = function(to, from) { |
| to.src = from.src; |
| }; |
| |
| // The representation of tracks in a stream is changed in M26. |
| // Unify them for earlier Chrome versions in the coexisting period. |
| if (!webkitMediaStream.prototype.getVideoTracks) { |
| webkitMediaStream.prototype.getVideoTracks = function() { |
| return this.videoTracks; |
| }; |
| webkitMediaStream.prototype.getAudioTracks = function() { |
| return this.audioTracks; |
| }; |
| } |
| |
| // New syntax of getXXXStreams method in M26. |
| if (!webkitRTCPeerConnection.prototype.getLocalStreams) { |
| webkitRTCPeerConnection.prototype.getLocalStreams = function() { |
| return this.localStreams; |
| }; |
| webkitRTCPeerConnection.prototype.getRemoteStreams = function() { |
| return this.remoteStreams; |
| }; |
| } |
| } else { |
| console.log("Browser does not appear to be WebRTC-capable"); |
| } |