diff options
Diffstat (limited to 'js')
| -rw-r--r-- | js/app/live-video.js | 44 | ||||
| -rw-r--r-- | js/lib/janus.nojquery.js | 2297 |
2 files changed, 2341 insertions, 0 deletions
diff --git a/js/app/live-video.js b/js/app/live-video.js new file mode 100644 index 0000000..f39e801 --- /dev/null +++ b/js/app/live-video.js @@ -0,0 +1,44 @@ +var websocket_server = null; +if(window.location.protocol === 'http:') + websocket_server = "ws://" + window.location.hostname + "/janus-ws"; +else + websocket_server = "wss://" + window.location.hostname + "/janus-ws"; + +var janus = null; +var streaming = null; + +Janus.init({callback: function() { + janus = new Janus( + { + server: [websocket_server, "/janus"], + iceServers: [{url: "turn:turn.homebase.dk", username: "myturn", credential: "notsecure"}], + ipv6: false, + success: function() { + janus.attach( + { + plugin: "janus.plugin.streaming", + opaqueId: "streaming-"+Janus.randomString(12), + success: function(pluginHandle) { + streaming = pluginHandle; + streaming.send({"message": { "request": "watch", id: 1}}); + }, + onmessage: function(msg, jsep) { + if(jsep !== undefined && jsep !== null) { + streaming.createAnswer( + { + jsep: jsep, + media: { audioSend: false, videoSend: false }, + success: function(jsep) { + var body = { "request": "start" }; + streaming.send({"message": body, "jsep": jsep}); + }, + }); + } + }, + onremotestream: function(stream) { + Janus.attachMediaStream(document.getElementById('live-video'), stream); + }, + }); + }, + }); +}}); diff --git a/js/lib/janus.nojquery.js b/js/lib/janus.nojquery.js new file mode 100644 index 0000000..0dfce72 --- /dev/null +++ b/js/lib/janus.nojquery.js @@ -0,0 +1,2297 @@ +/* + The MIT License (MIT) + + Copyright (c) 2016 Meetecho + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the "Software"), + to deal in the Software without restriction, including without limitation + the rights to use, copy, modify, merge, publish, distribute, sublicense, + and/or sell copies of the Software, and to permit persons to whom the + Software is furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + OTHER DEALINGS IN THE SOFTWARE. + */ + +// List of sessions +Janus.sessions = {}; + +// Screensharing Chrome Extension ID +Janus.extensionId = "hapfgfdkleiggjjpfpenajgdnfckjpaj"; +Janus.isExtensionEnabled = function() { + if(window.navigator.userAgent.match('Chrome')) { + var chromever = parseInt(window.navigator.userAgent.match(/Chrome\/(.*) /)[1], 10); + var maxver = 33; + if(window.navigator.userAgent.match('Linux')) + maxver = 35; // "known" crash in chrome 34 and 35 on linux + if(chromever >= 26 && chromever <= maxver) { + // Older versions of Chrome don't support this extension-based approach, so lie + return true; + } + return (document.getElementById('janus-extension-installed') !== null); + } else { + // Firefox of others, no need for the extension (but this doesn't mean it will work) + return true; + } +}; + +Janus.noop = function() {}; + +// Initialization +Janus.init = function(options) { + options = options || {}; + options.callback = (typeof options.callback == "function") ? options.callback : Janus.noop; + if(Janus.initDone === true) { + // Already initialized + options.callback(); + } else { + if(typeof console == "undefined" || typeof console.log == "undefined") + console = { log: function() {} }; + // Console logging (all debugging disabled by default) + Janus.trace = Janus.noop; + Janus.debug = Janus.noop; + Janus.vdebug = Janus.noop; + Janus.log = Janus.noop; + Janus.warn = Janus.noop; + Janus.error = Janus.noop; + if(options.debug === true || options.debug === "all") { + // Enable all debugging levels + Janus.trace = console.trace.bind(console); + Janus.debug = console.debug.bind(console); + Janus.vdebug = console.debug.bind(console); + Janus.log = console.log.bind(console); + Janus.warn = console.warn.bind(console); + Janus.error = console.error.bind(console); + } else if(Array.isArray(options.debug)) { + for(var i in options.debug) { + var d = options.debug[i]; + switch(d) { + case "trace": + Janus.trace = console.trace.bind(console); + break; + case "debug": + Janus.debug = console.debug.bind(console); + break; + case "vdebug": + Janus.vdebug = console.debug.bind(console); + break; + case "log": + Janus.log = console.log.bind(console); + break; + case "warn": + Janus.warn = console.warn.bind(console); + break; + case "error": + Janus.error = console.error.bind(console); + break; + default: + console.error("Unknown debugging option '" + d + "' (supported: 'trace', 'debug', 'vdebug', 'log', warn', 'error')"); + break; + } + } + } + Janus.log("Initializing library"); + // Helper method to enumerate devices + Janus.listDevices = function(callback) { + callback = (typeof callback == "function") ? callback : Janus.noop; + if(navigator.mediaDevices) { + navigator.mediaDevices.getUserMedia({ audio: true, video: true }) + .then(function(stream) { + navigator.mediaDevices.enumerateDevices().then(function(devices) { + Janus.debug(devices); + callback(devices); + // Get rid of the now useless stream + try { + stream.stop(); + } catch(e) {} + try { + var tracks = stream.getTracks(); + for(var i in tracks) { + var mst = tracks[i]; + if(mst !== null && mst !== undefined) + mst.stop(); + } + } catch(e) {} + }); + }) + .catch(function(err) { + Janus.error(err); + callback([]); + }); + } else { + Janus.warn("navigator.mediaDevices unavailable"); + callback([]); + } + } + // Helper methods to attach/reattach a stream to a video element (previously part of adapter.js) + Janus.attachMediaStream = function(element, stream) { + if(adapter.browserDetails.browser === 'chrome') { + var chromever = adapter.browserDetails.version; + if(chromever >= 43) { + element.srcObject = stream; + } else if(typeof element.src !== 'undefined') { + element.src = URL.createObjectURL(stream); + } else { + Janus.error("Error attaching stream to element"); + } + } else { + element.srcObject = stream; + } + }; + Janus.reattachMediaStream = function(to, from) { + if(adapter.browserDetails.browser === 'chrome') { + var chromever = adapter.browserDetails.version; + if(chromever >= 43) { + to.srcObject = from.srcObject; + } else if(typeof to.src !== 'undefined') { + to.src = from.src; + } + } else { + to.srcObject = from.srcObject; + } + }; + // Prepare a helper method to send AJAX requests in a syntax similar to jQuery (at least for what we care) + Janus.ajax = function(params) { + // Check params + if(params === null || params === undefined) + return; + params.success = (typeof params.success == "function") ? params.success : Janus.noop; + params.error = (typeof params.error == "function") ? params.error : Janus.noop; + // Make sure there's an URL + if(params.url === null || params.url === undefined) { + Janus.error('Missing url', params.url); + params.error(null, -1, 'Missing url'); + return; + } + // Validate async + params.async = (params.async === null || params.async === undefined) ? true : (params.async === true); + Janus.log(params); + // IE doesn't even know what WebRTC is, so no polyfill needed + var XHR = new XMLHttpRequest(); + XHR.open(params.type, params.url, params.async); + if(params.contentType !== null && params.contentType !== undefined) + XHR.setRequestHeader('Content-type', params.contentType); + if(params.withCredentials !== null && params.withCredentials !== undefined) + XHR.withCredentials = params.withCredentials; + if(params.async) { + XHR.onreadystatechange = function () { + if(XHR.readyState != 4) + return; + if(XHR.status !== 200) { + // Got an error? + params.error(XHR, XHR.status !== 0 ? XHR.status : 'error', ""); + return; + } + // Got payload + params.success(JSON.parse(XHR.responseText)); + }; + } + try { + XHR.send(params.data); + if(!params.async) { + if(XHR.status !== 200) { + // Got an error? + params.error(XHR, XHR.status !== 0 ? XHR.status : 'error', ""); + return; + } + // Got payload + params.success(JSON.parse(XHR.responseText)); + } + } catch(e) { + // Something broke up + params.error(XHR, 'error', ''); + }; + }; + // Detect tab close: make sure we don't loose existing onbeforeunload handlers + var oldOBF = window.onbeforeunload; + window.onbeforeunload = function() { + Janus.log("Closing window"); + for(var s in Janus.sessions) { + if(Janus.sessions[s] !== null && Janus.sessions[s] !== undefined && + Janus.sessions[s].destroyOnUnload) { + Janus.log("Destroying session " + s); + Janus.sessions[s].destroy({asyncRequest: false}); + } + } + if(oldOBF && typeof oldOBF == "function") + oldOBF(); + } + function addJsList(srcArray) { + if (!srcArray || !Array.isArray(srcArray) || srcArray.length == 0) { + options.callback(); + } + var count = 0; + addJs(srcArray[count],next); + + function next() { + count++; + if (count<srcArray.length) { + addJs(srcArray[count],next); + } + else { + options.callback(); + } + } + } + function addJs(src,done) { + try { + if(adapter) { + // Already loaded + Janus.debug(src + " already loaded, skipping"); + done(); + return; + } + } catch(e) {}; + var oHead = document.getElementsByTagName('head').item(0); + var oScript = document.createElement("script"); + oScript.type = "text/javascript"; + oScript.src = src; + oScript.onload = function() { + Janus.log("Library " + src + " loaded"); + done(); + } + oHead.appendChild(oScript); + } + Janus.initDone = true; + addJsList(["adapter.js"]); // We may need others in the future + } +}; + +// Helper method to check whether WebRTC is supported by this browser +Janus.isWebrtcSupported = function() { + return window.RTCPeerConnection !== undefined && window.RTCPeerConnection !== null && + navigator.getUserMedia !== undefined && navigator.getUserMedia !== null; +}; + +// Helper method to create random identifiers (e.g., transaction) +Janus.randomString = function(len) { + var charSet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; + var randomString = ''; + for (var i = 0; i < len; i++) { + var randomPoz = Math.floor(Math.random() * charSet.length); + randomString += charSet.substring(randomPoz,randomPoz+1); + } + return randomString; +} + + +// Janus session object +function Janus(gatewayCallbacks) { + if(Janus.initDone === undefined) { + gatewayCallbacks.error("Library not initialized"); + return {}; + } + if(!Janus.isWebrtcSupported()) { + gatewayCallbacks.error("WebRTC not supported by this browser"); + return {}; + } + Janus.log("Library initialized: " + Janus.initDone); + gatewayCallbacks = gatewayCallbacks || {}; + gatewayCallbacks.success = (typeof gatewayCallbacks.success == "function") ? gatewayCallbacks.success : Janus.noop; + gatewayCallbacks.error = (typeof gatewayCallbacks.error == "function") ? gatewayCallbacks.error : Janus.noop; + gatewayCallbacks.destroyed = (typeof gatewayCallbacks.destroyed == "function") ? gatewayCallbacks.destroyed : Janus.noop; + if(gatewayCallbacks.server === null || gatewayCallbacks.server === undefined) { + gatewayCallbacks.error("Invalid gateway url"); + return {}; + } + var websockets = false; + var ws = null; + var wsHandlers = {}; + var wsKeepaliveTimeoutId = null; + + var servers = null, serversIndex = 0; + var server = gatewayCallbacks.server; + if(Array.isArray(server)) { + Janus.log("Multiple servers provided (" + server.length + "), will use the first that works"); + server = null; + servers = gatewayCallbacks.server; + Janus.debug(servers); + } else { + if(server.indexOf("ws") === 0) { + websockets = true; + Janus.log("Using WebSockets to contact Janus: " + server); + } else { + websockets = false; + Janus.log("Using REST API to contact Janus: " + server); + } + } + var iceServers = gatewayCallbacks.iceServers; + if(iceServers === undefined || iceServers === null) + iceServers = [{urls: "stun:stun.l.google.com:19302"}]; + var iceTransportPolicy = gatewayCallbacks.iceTransportPolicy; + // Whether IPv6 candidates should be gathered + var ipv6Support = gatewayCallbacks.ipv6; + if(ipv6Support === undefined || ipv6Support === null) + ipv6Support = false; + // Whether we should enable the withCredentials flag for XHR requests + var withCredentials = false; + if(gatewayCallbacks.withCredentials !== undefined && gatewayCallbacks.withCredentials !== null) + withCredentials = gatewayCallbacks.withCredentials === true; + // Optional max events + var maxev = null; + if(gatewayCallbacks.max_poll_events !== undefined && gatewayCallbacks.max_poll_events !== null) + maxev = gatewayCallbacks.max_poll_events; + if(maxev < 1) + maxev = 1; + // Token to use (only if the token based authentication mechanism is enabled) + var token = null; + if(gatewayCallbacks.token !== undefined && gatewayCallbacks.token !== null) + token = gatewayCallbacks.token; + // API secret to use (only if the shared API secret is enabled) + var apisecret = null; + if(gatewayCallbacks.apisecret !== undefined && gatewayCallbacks.apisecret !== null) + apisecret = gatewayCallbacks.apisecret; + // Whether we should destroy this session when onbeforeunload is called + this.destroyOnUnload = true; + if(gatewayCallbacks.destroyOnUnload !== undefined && gatewayCallbacks.destroyOnUnload !== null) + this.destroyOnUnload = (gatewayCallbacks.destroyOnUnload === true); + + var connected = false; + var sessionId = null; + var pluginHandles = {}; + var that = this; + var retries = 0; + var transactions = {}; + createSession(gatewayCallbacks); + + // Public methods + this.getServer = function() { return server; }; + this.isConnected = function() { return connected; }; + this.getSessionId = function() { return sessionId; }; + this.destroy = function(callbacks) { destroySession(callbacks, true); }; + this.attach = function(callbacks) { createHandle(callbacks); }; + + function eventHandler() { + if(sessionId == null) + return; + Janus.debug('Long poll...'); + if(!connected) { + Janus.warn("Is the gateway down? (connected=false)"); + return; + } + var longpoll = server + "/" + sessionId + "?rid=" + new Date().getTime(); + if(maxev !== undefined && maxev !== null) + longpoll = longpoll + "&maxev=" + maxev; + if(token !== null && token !== undefined) + longpoll = longpoll + "&token=" + token; + if(apisecret !== null && apisecret !== undefined) + longpoll = longpoll + "&apisecret=" + apisecret; + Janus.ajax({ + type: 'GET', + url: longpoll, + withCredentials: withCredentials, + cache: false, + timeout: 60000, // FIXME + success: handleEvent, + error: function(XMLHttpRequest, textStatus, errorThrown) { + Janus.error(textStatus + ": " + errorThrown); + retries++; + if(retries > 3) { + // Did we just lose the gateway? :-( + connected = false; + gatewayCallbacks.error("Lost connection to the gateway (is it down?)"); + return; + } + eventHandler(); + }, + dataType: "json" + }); + } + + // Private event handler: this will trigger plugin callbacks, if set + function handleEvent(json) { + retries = 0; + if(!websockets && sessionId !== undefined && sessionId !== null) + setTimeout(eventHandler, 200); + if(!websockets && Array.isArray(json)) { + // We got an array: it means we passed a maxev > 1, iterate on all objects + for(var i=0; i<json.length; i++) { + handleEvent(json[i]); + } + return; + } + if(json["janus"] === "keepalive") { + // Nothing happened + Janus.vdebug("Got a keepalive on session " + sessionId); + return; + } else if(json["janus"] === "ack") { + // Just an ack, we can probably ignore + Janus.debug("Got an ack on session " + sessionId); + Janus.debug(json); + var transaction = json["transaction"]; + if(transaction !== null && transaction !== undefined) { + var reportSuccess = transactions[transaction]; + if(reportSuccess !== null && reportSuccess !== undefined) { + reportSuccess(json); + } + delete transactions[transaction]; + } + return; + } else if(json["janus"] === "success") { + // Success! + Janus.debug("Got a success on session " + sessionId); + Janus.debug(json); + var transaction = json["transaction"]; + if(transaction !== null && transaction !== undefined) { + var reportSuccess = transactions[transaction]; + if(reportSuccess !== null && reportSuccess !== undefined) { + reportSuccess(json); + } + delete transactions[transaction]; + } + return; + } else if(json["janus"] === "webrtcup") { + // The PeerConnection with the gateway is up! Notify this + Janus.debug("Got a webrtcup event on session " + sessionId); + Janus.debug(json); + var sender = json["sender"]; + if(sender === undefined || sender === null) { + Janus.warn("Missing sender..."); + return; + } + var pluginHandle = pluginHandles[sender]; + if(pluginHandle === undefined || pluginHandle === null) { + Janus.warn("This handle is not attached to this session"); + return; + } + pluginHandle.webrtcState(true); + return; + } else if(json["janus"] === "hangup") { + // A plugin asked the core to hangup a PeerConnection on one of our handles + Janus.debug("Got a hangup event on session " + sessionId); + Janus.debug(json); + var sender = json["sender"]; + if(sender === undefined || sender === null) { + Janus.warn("Missing sender..."); + return; + } + var pluginHandle = pluginHandles[sender]; + if(pluginHandle === undefined || pluginHandle === null) { + Janus.warn("This handle is not attached to this session"); + return; + } + pluginHandle.webrtcState(false); + pluginHandle.hangup(); + } else if(json["janus"] === "detached") { + // A plugin asked the core to detach one of our handles + Janus.debug("Got a detached event on session " + sessionId); + Janus.debug(json); + var sender = json["sender"]; + if(sender === undefined || sender === null) { + Janus.warn("Missing sender..."); + return; + } + var pluginHandle = pluginHandles[sender]; + if(pluginHandle === undefined || pluginHandle === null) { + // Don't warn here because destroyHandle causes this situation. + return; + } + pluginHandle.ondetached(); + pluginHandle.detach(); + } else if(json["janus"] === "media") { + // Media started/stopped flowing + Janus.debug("Got a media event on session " + sessionId); + Janus.debug(json); + var sender = json["sender"]; + if(sender === undefined || sender === null) { + Janus.warn("Missing sender..."); + return; + } + var pluginHandle = pluginHandles[sender]; + if(pluginHandle === undefined || pluginHandle === null) { + Janus.warn("This handle is not attached to this session"); + return; + } + pluginHandle.mediaState(json["type"], json["receiving"]); + } else if(json["janus"] === "slowlink") { + Janus.debug("Got a slowlink event on session " + sessionId); + Janus.debug(json); + // Trouble uplink or downlink + var sender = json["sender"]; + if(sender === undefined || sender === null) { + Janus.warn("Missing sender..."); + return; + } + var pluginHandle = pluginHandles[sender]; + if(pluginHandle === undefined || pluginHandle === null) { + Janus.warn("This handle is not attached to this session"); + return; + } + pluginHandle.slowLink(json["uplink"], json["nacks"]); + } else if(json["janus"] === "error") { + // Oops, something wrong happened + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + Janus.debug(json); + var transaction = json["transaction"]; + if(transaction !== null && transaction !== undefined) { + var reportSuccess = transactions[transaction]; + if(reportSuccess !== null && reportSuccess !== undefined) { + reportSuccess(json); + } + delete transactions[transaction]; + } + return; + } else if(json["janus"] === "event") { + Janus.debug("Got a plugin event on session " + sessionId); + Janus.debug(json); + var sender = json["sender"]; + if(sender === undefined || sender === null) { + Janus.warn("Missing sender..."); + return; + } + var plugindata = json["plugindata"]; + if(plugindata === undefined || plugindata === null) { + Janus.warn("Missing plugindata..."); + return; + } + Janus.debug(" -- Event is coming from " + sender + " (" + plugindata["plugin"] + ")"); + var data = plugindata["data"]; + Janus.debug(data); + var pluginHandle = pluginHandles[sender]; + if(pluginHandle === undefined || pluginHandle === null) { + Janus.warn("This handle is not attached to this session"); + return; + } + var jsep = json["jsep"]; + if(jsep !== undefined && jsep !== null) { + Janus.debug("Handling SDP as well..."); + Janus.debug(jsep); + } + var callback = pluginHandle.onmessage; + if(callback !== null && callback !== undefined) { + Janus.debug("Notifying application..."); + // Send to callback specified when attaching plugin handle + callback(data, jsep); + } else { + // Send to generic callback (?) + Janus.debug("No provided notification callback"); + } + } else { + Janus.warn("Unkown message/event '" + json["janus"] + "' on session " + sessionId); + Janus.debug(json); + } + } + + // Private helper to send keep-alive messages on WebSockets + function keepAlive() { + if(server === null || !websockets || !connected) + return; + wsKeepaliveTimeoutId = setTimeout(keepAlive, 30000); + var request = { "janus": "keepalive", "session_id": sessionId, "transaction": Janus.randomString(12) }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + ws.send(JSON.stringify(request)); + } + + // Private method to create a session + function createSession(callbacks) { + var transaction = Janus.randomString(12); + var request = { "janus": "create", "transaction": transaction }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + if(server === null && Array.isArray(servers)) { + // We still need to find a working server from the list we were given + server = servers[serversIndex]; + if(server.indexOf("ws") === 0) { + websockets = true; + Janus.log("Server #" + (serversIndex+1) + ": trying WebSockets to contact Janus (" + server + ")"); + } else { + websockets = false; + Janus.log("Server #" + (serversIndex+1) + ": trying REST API to contact Janus (" + server + ")"); + } + } + if(websockets) { + ws = new WebSocket(server, 'janus-protocol'); + wsHandlers = { + 'error': function() { + Janus.error("Error connecting to the Janus WebSockets server... " + server); + if (Array.isArray(servers)) { + serversIndex++; + if (serversIndex == servers.length) { + // We tried all the servers the user gave us and they all failed + callbacks.error("Error connecting to any of the provided Janus servers: Is the gateway down?"); + return; + } + // Let's try the next server + server = null; + setTimeout(function() { + createSession(callbacks); + }, 200); + return; + } + callbacks.error("Error connecting to the Janus WebSockets server: Is the gateway down?"); + }, + + 'open': function() { + // We need to be notified about the success + transactions[transaction] = function(json) { + Janus.debug(json); + if (json["janus"] !== "success") { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + callbacks.error(json["error"].reason); + return; + } + wsKeepaliveTimeoutId = setTimeout(keepAlive, 30000); + connected = true; + sessionId = json.data["id"]; + Janus.log("Created session: " + sessionId); + Janus.sessions[sessionId] = that; + callbacks.success(); + }; + ws.send(JSON.stringify(request)); + }, + + 'message': function(event) { + handleEvent(JSON.parse(event.data)); + }, + + 'close': function() { + if (server === null || !connected) { + return; + } + connected = false; + // FIXME What if this is called when the page is closed? + gatewayCallbacks.error("Lost connection to the gateway (is it down?)"); + } + }; + + for(var eventName in wsHandlers) { + ws.addEventListener(eventName, wsHandlers[eventName]); + } + + return; + } + Janus.ajax({ + type: 'POST', + url: server, + withCredentials: withCredentials, + cache: false, + contentType: "application/json", + data: JSON.stringify(request), + success: function(json) { + Janus.debug(json); + if(json["janus"] !== "success") { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + callbacks.error(json["error"].reason); + return; + } + connected = true; + sessionId = json.data["id"]; + Janus.log("Created session: " + sessionId); + Janus.sessions[sessionId] = that; + eventHandler(); + callbacks.success(); + }, + error: function(XMLHttpRequest, textStatus, errorThrown) { + Janus.error(textStatus + ": " + errorThrown); // FIXME + if(Array.isArray(servers)) { + serversIndex++; + if(serversIndex == servers.length) { + // We tried all the servers the user gave us and they all failed + callbacks.error("Error connecting to any of the provided Janus servers: Is the gateway down?"); + return; + } + // Let's try the next server + server = null; + setTimeout(function() { createSession(callbacks); }, 200); + return; + } + if(errorThrown === "") + callbacks.error(textStatus + ": Is the gateway down?"); + else + callbacks.error(textStatus + ": " + errorThrown); + }, + dataType: "json" + }); + } + + // Private method to destroy a session + function destroySession(callbacks) { + callbacks = callbacks || {}; + // FIXME This method triggers a success even when we fail + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + var asyncRequest = true; + if(callbacks.asyncRequest !== undefined && callbacks.asyncRequest !== null) + asyncRequest = (callbacks.asyncRequest === true); + Janus.log("Destroying session " + sessionId + " (async=" + asyncRequest + ")"); + if(!connected) { + Janus.warn("Is the gateway down? (connected=false)"); + callbacks.success(); + return; + } + if(sessionId === undefined || sessionId === null) { + Janus.warn("No session to destroy"); + callbacks.success(); + gatewayCallbacks.destroyed(); + return; + } + delete Janus.sessions[sessionId]; + // Destroy all handles first + for(var ph in pluginHandles) { + var phv = pluginHandles[ph]; + Janus.log("Destroying handle " + phv.id + " (" + phv.plugin + ")"); + destroyHandle(phv.id, {asyncRequest: asyncRequest}); + } + // Ok, go on + var request = { "janus": "destroy", "transaction": Janus.randomString(12) }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + if(websockets) { + request["session_id"] = sessionId; + + var unbindWebSocket = function() { + for(var eventName in wsHandlers) { + ws.removeEventListener(eventName, wsHandlers[eventName]); + } + ws.removeEventListener('message', onUnbindMessage); + ws.removeEventListener('error', onUnbindError); + if(wsKeepaliveTimeoutId) { + clearTimeout(wsKeepaliveTimeoutId); + } + }; + + var onUnbindMessage = function(event){ + var data = JSON.parse(event.data); + if(data.session_id == request.session_id && data.transaction == request.transaction) { + unbindWebSocket(); + callbacks.success(); + gatewayCallbacks.destroyed(); + } + }; + var onUnbindError = function(event) { + unbindWebSocket(); + callbacks.error("Failed to destroy the gateway: Is the gateway down?"); + gatewayCallbacks.destroyed(); + }; + + ws.addEventListener('message', onUnbindMessage); + ws.addEventListener('error', onUnbindError); + + ws.send(JSON.stringify(request)); + return; + } + Janus.ajax({ + type: 'POST', + url: server + "/" + sessionId, + async: asyncRequest, // Sometimes we need false here, or destroying in onbeforeunload won't work + withCredentials: withCredentials, + cache: false, + contentType: "application/json", + data: JSON.stringify(request), + success: function(json) { + Janus.log("Destroyed session:"); + Janus.debug(json); + sessionId = null; + connected = false; + if(json["janus"] !== "success") { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + } + callbacks.success(); + gatewayCallbacks.destroyed(); + }, + error: function(XMLHttpRequest, textStatus, errorThrown) { + Janus.error(textStatus + ": " + errorThrown); // FIXME + // Reset everything anyway + sessionId = null; + connected = false; + callbacks.success(); + gatewayCallbacks.destroyed(); + }, + dataType: "json" + }); + } + + // Private method to create a plugin handle + function createHandle(callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + callbacks.consentDialog = (typeof callbacks.consentDialog == "function") ? callbacks.consentDialog : Janus.noop; + callbacks.mediaState = (typeof callbacks.mediaState == "function") ? callbacks.mediaState : Janus.noop; + callbacks.webrtcState = (typeof callbacks.webrtcState == "function") ? callbacks.webrtcState : Janus.noop; + callbacks.slowLink = (typeof callbacks.slowLink == "function") ? callbacks.slowLink : Janus.noop; + callbacks.onmessage = (typeof callbacks.onmessage == "function") ? callbacks.onmessage : Janus.noop; + callbacks.onlocalstream = (typeof callbacks.onlocalstream == "function") ? callbacks.onlocalstream : Janus.noop; + callbacks.onremotestream = (typeof callbacks.onremotestream == "function") ? callbacks.onremotestream : Janus.noop; + callbacks.ondata = (typeof callbacks.ondata == "function") ? callbacks.ondata : Janus.noop; + callbacks.ondataopen = (typeof callbacks.ondataopen == "function") ? callbacks.ondataopen : Janus.noop; + callbacks.oncleanup = (typeof callbacks.oncleanup == "function") ? callbacks.oncleanup : Janus.noop; + callbacks.ondetached = (typeof callbacks.ondetached == "function") ? callbacks.ondetached : Janus.noop; + if(!connected) { + Janus.warn("Is the gateway down? (connected=false)"); + callbacks.error("Is the gateway down? (connected=false)"); + return; + } + var plugin = callbacks.plugin; + if(plugin === undefined || plugin === null) { + Janus.error("Invalid plugin"); + callbacks.error("Invalid plugin"); + return; + } + var opaqueId = callbacks.opaqueId; + var transaction = Janus.randomString(12); + var request = { "janus": "attach", "plugin": plugin, "opaque_id": opaqueId, "transaction": transaction }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + if(websockets) { + transactions[transaction] = function(json) { + Janus.debug(json); + if(json["janus"] !== "success") { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + callbacks.error("Ooops: " + json["error"].code + " " + json["error"].reason); + return; + } + var handleId = json.data["id"]; + Janus.log("Created handle: " + handleId); + var pluginHandle = + { + session : that, + plugin : plugin, + id : handleId, + webrtcStuff : { + started : false, + myStream : null, + streamExternal : false, + remoteStream : null, + mySdp : null, + pc : null, + dataChannel : null, + dtmfSender : null, + trickle : true, + iceDone : false, + sdpSent : false, + volume : { + value : null, + timer : null + }, + bitrate : { + value : null, + bsnow : null, + bsbefore : null, + tsnow : null, + tsbefore : null, + timer : null + } + }, + getId : function() { return handleId; }, + getPlugin : function() { return plugin; }, + getVolume : function() { return getVolume(handleId); }, + isAudioMuted : function() { return isMuted(handleId, false); }, + muteAudio : function() { return mute(handleId, false, true); }, + unmuteAudio : function() { return mute(handleId, false, false); }, + isVideoMuted : function() { return isMuted(handleId, true); }, + muteVideo : function() { return mute(handleId, true, true); }, + unmuteVideo : function() { return mute(handleId, true, false); }, + getBitrate : function() { return getBitrate(handleId); }, + send : function(callbacks) { sendMessage(handleId, callbacks); }, + data : function(callbacks) { sendData(handleId, callbacks); }, + dtmf : function(callbacks) { sendDtmf(handleId, callbacks); }, + consentDialog : callbacks.consentDialog, + mediaState : callbacks.mediaState, + webrtcState : callbacks.webrtcState, + slowLink : callbacks.slowLink, + onmessage : callbacks.onmessage, + createOffer : function(callbacks) { prepareWebrtc(handleId, callbacks); }, + createAnswer : function(callbacks) { prepareWebrtc(handleId, callbacks); }, + handleRemoteJsep : function(callbacks) { prepareWebrtcPeer(handleId, callbacks); }, + onlocalstream : callbacks.onlocalstream, + onremotestream : callbacks.onremotestream, + ondata : callbacks.ondata, + ondataopen : callbacks.ondataopen, + oncleanup : callbacks.oncleanup, + ondetached : callbacks.ondetached, + hangup : function(sendRequest) { cleanupWebrtc(handleId, sendRequest === true); }, + detach : function(callbacks) { destroyHandle(handleId, callbacks); } + } + pluginHandles[handleId] = pluginHandle; + callbacks.success(pluginHandle); + }; + request["session_id"] = sessionId; + ws.send(JSON.stringify(request)); + return; + } + Janus.ajax({ + type: 'POST', + url: server + "/" + sessionId, + withCredentials: withCredentials, + cache: false, + contentType: "application/json", + data: JSON.stringify(request), + success: function(json) { + Janus.debug(json); + if(json["janus"] !== "success") { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + callbacks.error("Ooops: " + json["error"].code + " " + json["error"].reason); + return; + } + var handleId = json.data["id"]; + Janus.log("Created handle: " + handleId); + var pluginHandle = + { + session : that, + plugin : plugin, + id : handleId, + webrtcStuff : { + started : false, + myStream : null, + streamExternal : false, + remoteStream : null, + mySdp : null, + pc : null, + dataChannel : null, + dtmfSender : null, + trickle : true, + iceDone : false, + sdpSent : false, + volume : { + value : null, + timer : null + }, + bitrate : { + value : null, + bsnow : null, + bsbefore : null, + tsnow : null, + tsbefore : null, + timer : null + } + }, + getId : function() { return handleId; }, + getPlugin : function() { return plugin; }, + getVolume : function() { return getVolume(handleId); }, + isAudioMuted : function() { return isMuted(handleId, false); }, + muteAudio : function() { return mute(handleId, false, true); }, + unmuteAudio : function() { return mute(handleId, false, false); }, + isVideoMuted : function() { return isMuted(handleId, true); }, + muteVideo : function() { return mute(handleId, true, true); }, + unmuteVideo : function() { return mute(handleId, true, false); }, + getBitrate : function() { return getBitrate(handleId); }, + send : function(callbacks) { sendMessage(handleId, callbacks); }, + data : function(callbacks) { sendData(handleId, callbacks); }, + dtmf : function(callbacks) { sendDtmf(handleId, callbacks); }, + consentDialog : callbacks.consentDialog, + mediaState : callbacks.mediaState, + webrtcState : callbacks.webrtcState, + slowLink : callbacks.slowLink, + onmessage : callbacks.onmessage, + createOffer : function(callbacks) { prepareWebrtc(handleId, callbacks); }, + createAnswer : function(callbacks) { prepareWebrtc(handleId, callbacks); }, + handleRemoteJsep : function(callbacks) { prepareWebrtcPeer(handleId, callbacks); }, + onlocalstream : callbacks.onlocalstream, + onremotestream : callbacks.onremotestream, + ondata : callbacks.ondata, + ondataopen : callbacks.ondataopen, + oncleanup : callbacks.oncleanup, + ondetached : callbacks.ondetached, + hangup : function(sendRequest) { cleanupWebrtc(handleId, sendRequest === true); }, + detach : function(callbacks) { destroyHandle(handleId, callbacks); } + } + pluginHandles[handleId] = pluginHandle; + callbacks.success(pluginHandle); + }, + error: function(XMLHttpRequest, textStatus, errorThrown) { + Janus.error(textStatus + ": " + errorThrown); // FIXME + }, + dataType: "json" + }); + } + + // Private method to send a message + function sendMessage(handleId, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + if(!connected) { + Janus.warn("Is the gateway down? (connected=false)"); + callbacks.error("Is the gateway down? (connected=false)"); + return; + } + var message = callbacks.message; + var jsep = callbacks.jsep; + var transaction = Janus.randomString(12); + var request = { "janus": "message", "body": message, "transaction": transaction }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + if(jsep !== null && jsep !== undefined) + request.jsep = jsep; + Janus.debug("Sending message to plugin (handle=" + handleId + "):"); + Janus.debug(request); + if(websockets) { + request["session_id"] = sessionId; + request["handle_id"] = handleId; + transactions[transaction] = function(json) { + Janus.debug("Message sent!"); + Janus.debug(json); + if(json["janus"] === "success") { + // We got a success, must have been a synchronous transaction + var plugindata = json["plugindata"]; + if(plugindata === undefined || plugindata === null) { + Janus.warn("Request succeeded, but missing plugindata..."); + callbacks.success(); + return; + } + Janus.log("Synchronous transaction successful (" + plugindata["plugin"] + ")"); + var data = plugindata["data"]; + Janus.debug(data); + callbacks.success(data); + return; + } else if(json["janus"] !== "ack") { + // Not a success and not an ack, must be an error + if(json["error"] !== undefined && json["error"] !== null) { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + callbacks.error(json["error"].code + " " + json["error"].reason); + } else { + Janus.error("Unknown error"); // FIXME + callbacks.error("Unknown error"); + } + return; + } + // If we got here, the plugin decided to handle the request asynchronously + callbacks.success(); + }; + ws.send(JSON.stringify(request)); + return; + } + Janus.ajax({ + type: 'POST', + url: server + "/" + sessionId + "/" + handleId, + withCredentials: withCredentials, + cache: false, + contentType: "application/json", + data: JSON.stringify(request), + success: function(json) { + Janus.debug("Message sent!"); + Janus.debug(json); + if(json["janus"] === "success") { + // We got a success, must have been a synchronous transaction + var plugindata = json["plugindata"]; + if(plugindata === undefined || plugindata === null) { + Janus.warn("Request succeeded, but missing plugindata..."); + callbacks.success(); + return; + } + Janus.log("Synchronous transaction successful (" + plugindata["plugin"] + ")"); + var data = plugindata["data"]; + Janus.debug(data); + callbacks.success(data); + return; + } else if(json["janus"] !== "ack") { + // Not a success and not an ack, must be an error + if(json["error"] !== undefined && json["error"] !== null) { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + callbacks.error(json["error"].code + " " + json["error"].reason); + } else { + Janus.error("Unknown error"); // FIXME + callbacks.error("Unknown error"); + } + return; + } + // If we got here, the plugin decided to handle the request asynchronously + callbacks.success(); + }, + error: function(XMLHttpRequest, textStatus, errorThrown) { + Janus.error(textStatus + ": " + errorThrown); // FIXME + callbacks.error(textStatus + ": " + errorThrown); + }, + dataType: "json" + }); + } + + // Private method to send a trickle candidate + function sendTrickleCandidate(handleId, candidate) { + if(!connected) { + Janus.warn("Is the gateway down? (connected=false)"); + return; + } + var request = { "janus": "trickle", "candidate": candidate, "transaction": Janus.randomString(12) }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + Janus.vdebug("Sending trickle candidate (handle=" + handleId + "):"); + Janus.vdebug(request); + if(websockets) { + request["session_id"] = sessionId; + request["handle_id"] = handleId; + ws.send(JSON.stringify(request)); + return; + } + Janus.ajax({ + type: 'POST', + url: server + "/" + sessionId + "/" + handleId, + withCredentials: withCredentials, + cache: false, + contentType: "application/json", + data: JSON.stringify(request), + success: function(json) { + Janus.vdebug("Candidate sent!"); + Janus.vdebug(json); + if(json["janus"] !== "ack") { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + return; + } + }, + error: function(XMLHttpRequest, textStatus, errorThrown) { + Janus.error(textStatus + ": " + errorThrown); // FIXME + }, + dataType: "json" + }); + } + + // Private method to send a data channel message + function sendData(handleId, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + callbacks.error("Invalid handle"); + return; + } + var config = pluginHandle.webrtcStuff; + var text = callbacks.text; + if(text === null || text === undefined) { + Janus.warn("Invalid text"); + callbacks.error("Invalid text"); + return; + } + Janus.log("Sending string on data channel: " + text); + config.dataChannel.send(text); + callbacks.success(); + } + + // Private method to send a DTMF tone + function sendDtmf(handleId, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + callbacks.error("Invalid handle"); + return; + } + var config = pluginHandle.webrtcStuff; + if(config.dtmfSender === null || config.dtmfSender === undefined) { + // Create the DTMF sender, if possible + if(config.myStream !== undefined && config.myStream !== null) { + var tracks = config.myStream.getAudioTracks(); + if(tracks !== null && tracks !== undefined && tracks.length > 0) { + var local_audio_track = tracks[0]; + config.dtmfSender = config.pc.createDTMFSender(local_audio_track); + Janus.log("Created DTMF Sender"); + config.dtmfSender.ontonechange = function(tone) { Janus.debug("Sent DTMF tone: " + tone.tone); }; + } + } + if(config.dtmfSender === null || config.dtmfSender === undefined) { + Janus.warn("Invalid DTMF configuration"); + callbacks.error("Invalid DTMF configuration"); + return; + } + } + var dtmf = callbacks.dtmf; + if(dtmf === null || dtmf === undefined) { + Janus.warn("Invalid DTMF parameters"); + callbacks.error("Invalid DTMF parameters"); + return; + } + var tones = dtmf.tones; + if(tones === null || tones === undefined) { + Janus.warn("Invalid DTMF string"); + callbacks.error("Invalid DTMF string"); + return; + } + var duration = dtmf.duration; + if(duration === null || duration === undefined) + duration = 500; // We choose 500ms as the default duration for a tone + var gap = dtmf.gap; + if(gap === null || gap === undefined) + gap = 50; // We choose 50ms as the default gap between tones + Janus.debug("Sending DTMF string " + tones + " (duration " + duration + "ms, gap " + gap + "ms)"); + config.dtmfSender.insertDTMF(tones, duration, gap); + } + + // Private method to destroy a plugin handle + function destroyHandle(handleId, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + var asyncRequest = true; + if(callbacks.asyncRequest !== undefined && callbacks.asyncRequest !== null) + asyncRequest = (callbacks.asyncRequest === true); + Janus.log("Destroying handle " + handleId + " (sync=" + asyncRequest + ")"); + cleanupWebrtc(handleId); + if(!connected) { + Janus.warn("Is the gateway down? (connected=false)"); + callbacks.error("Is the gateway down? (connected=false)"); + return; + } + var request = { "janus": "detach", "transaction": Janus.randomString(12) }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + if(websockets) { + request["session_id"] = sessionId; + request["handle_id"] = handleId; + ws.send(JSON.stringify(request)); + delete pluginHandles[handleId]; + callbacks.success(); + return; + } + Janus.ajax({ + type: 'POST', + url: server + "/" + sessionId + "/" + handleId, + async: asyncRequest, // Sometimes we need false here, or destroying in onbeforeunload won't work + withCredentials: withCredentials, + cache: false, + contentType: "application/json", + data: JSON.stringify(request), + success: function(json) { + Janus.log("Destroyed handle:"); + Janus.debug(json); + if(json["janus"] !== "success") { + Janus.error("Ooops: " + json["error"].code + " " + json["error"].reason); // FIXME + } + delete pluginHandles[handleId]; + callbacks.success(); + }, + error: function(XMLHttpRequest, textStatus, errorThrown) { + Janus.error(textStatus + ": " + errorThrown); // FIXME + // We cleanup anyway + delete pluginHandles[handleId]; + callbacks.success(); + }, + dataType: "json" + }); + } + + // WebRTC stuff + function streamsDone(handleId, jsep, media, callbacks, stream) { + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + callbacks.error("Invalid handle"); + return; + } + var config = pluginHandle.webrtcStuff; + Janus.debug("streamsDone:", stream); + config.myStream = stream; + var pc_config = {"iceServers": iceServers, "iceTransportPolicy": iceTransportPolicy}; + //~ var pc_constraints = {'mandatory': {'MozDontOfferDataChannel':true}}; + var pc_constraints = { + "optional": [{"DtlsSrtpKeyAgreement": true}] + }; + if(ipv6Support === true) { + // FIXME This is only supported in Chrome right now + // For support in Firefox track this: https://bugzilla.mozilla.org/show_bug.cgi?id=797262 + pc_constraints.optional.push({"googIPv6":true}); + } + if(adapter.browserDetails.browser === "edge") { + // This is Edge, enable BUNDLE explicitly + pc_config.bundlePolicy = "max-bundle"; + } + Janus.log("Creating PeerConnection"); + Janus.debug(pc_constraints); + config.pc = new RTCPeerConnection(pc_config, pc_constraints); + Janus.debug(config.pc); + if(config.pc.getStats) { // FIXME + config.volume.value = 0; + config.bitrate.value = "0 kbits/sec"; + } + Janus.log("Preparing local SDP and gathering candidates (trickle=" + config.trickle + ")"); + config.pc.onicecandidate = function(event) { + if (event.candidate == null || + (adapter.browserDetails.browser === 'edge' && event.candidate.candidate.indexOf('endOfCandidates') > 0)) { + Janus.log("End of candidates."); + config.iceDone = true; + if(config.trickle === true) { + // Notify end of candidates + sendTrickleCandidate(handleId, {"completed": true}); + } else { + // No trickle, time to send the complete SDP (including all candidates) + sendSDP(handleId, callbacks); + } + } else { + // JSON.stringify doesn't work on some WebRTC objects anymore + // See https://code.google.com/p/chromium/issues/detail?id=467366 + var candidate = { + "candidate": event.candidate.candidate, + "sdpMid": event.candidate.sdpMid, + "sdpMLineIndex": event.candidate.sdpMLineIndex + }; + if(config.trickle === true) { + // Send candidate + sendTrickleCandidate(handleId, candidate); + } + } + }; + if(stream !== null && stream !== undefined) { + Janus.log('Adding local stream'); + config.pc.addStream(stream); + pluginHandle.onlocalstream(stream); + } + config.pc.onaddstream = function(remoteStream) { + Janus.log("Handling Remote Stream"); + Janus.debug(remoteStream); + config.remoteStream = remoteStream; + pluginHandle.onremotestream(remoteStream.stream); + }; + // Any data channel to create? + if(isDataEnabled(media)) { + Janus.log("Creating data channel"); + var onDataChannelMessage = function(event) { + Janus.log('Received message on data channel: ' + event.data); + pluginHandle.ondata(event.data); // FIXME + } + var onDataChannelStateChange = function() { + var dcState = config.dataChannel !== null ? config.dataChannel.readyState : "null"; + Janus.log('State change on data channel: ' + dcState); + if(dcState === 'open') { + pluginHandle.ondataopen(); // FIXME + } + } + var onDataChannelError = function(error) { + Janus.error('Got error on data channel:', error); + // TODO + } + // Until we implement the proxying of open requests within the Janus core, we open a channel ourselves whatever the case + config.dataChannel = config.pc.createDataChannel("JanusDataChannel", {ordered:false}); // FIXME Add options (ordered, maxRetransmits, etc.) + config.dataChannel.onmessage = onDataChannelMessage; + config.dataChannel.onopen = onDataChannelStateChange; + config.dataChannel.onclose = onDataChannelStateChange; + config.dataChannel.onerror = onDataChannelError; + } + // Create offer/answer now + if(jsep === null || jsep === undefined) { + createOffer(handleId, media, callbacks); + } else { + if(adapter.browserDetails.browser === "edge") { + // This is Edge, add an a=end-of-candidates at the end + jsep.sdp += "a=end-of-candidates\r\n"; + } + config.pc.setRemoteDescription( + new RTCSessionDescription(jsep), + function() { + Janus.log("Remote description accepted!"); + createAnswer(handleId, media, callbacks); + }, callbacks.error); + } + } + + function prepareWebrtc(handleId, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : webrtcError; + var jsep = callbacks.jsep; + var media = callbacks.media; + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + callbacks.error("Invalid handle"); + return; + } + var config = pluginHandle.webrtcStuff; + // Are we updating a session? + if(config.pc !== undefined && config.pc !== null) { + Janus.log("Updating existing media session"); + // Create offer/answer now + if(jsep === null || jsep === undefined) { + createOffer(handleId, media, callbacks); + } else { + if(adapter.browserDetails.browser === "edge") { + // This is Edge, add an a=end-of-candidates at the end + jsep.sdp += "a=end-of-candidates\r\n"; + } + config.pc.setRemoteDescription( + new RTCSessionDescription(jsep), + function() { + Janus.log("Remote description accepted!"); + createAnswer(handleId, media, callbacks); + }, callbacks.error); + } + return; + } + // Was a MediaStream object passed, or do we need to take care of that? + if(callbacks.stream !== null && callbacks.stream !== undefined) { + var stream = callbacks.stream; + Janus.log("MediaStream provided by the application"); + Janus.debug(stream); + // Skip the getUserMedia part + config.streamExternal = true; + streamsDone(handleId, jsep, media, callbacks, stream); + return; + } + config.trickle = isTrickleEnabled(callbacks.trickle); + if(isAudioSendEnabled(media) || isVideoSendEnabled(media)) { + var constraints = { mandatory: {}, optional: []}; + pluginHandle.consentDialog(true); + var audioSupport = isAudioSendEnabled(media); + if(audioSupport === true && media != undefined && media != null) { + if(typeof media.audio === 'object') { + audioSupport = media.audio; + } + } + var videoSupport = isVideoSendEnabled(media); + if(videoSupport === true && media != undefined && media != null) { + if(media.video && media.video != 'screen' && media.video != 'window') { + var width = 0; + var height = 0, maxHeight = 0; + if(media.video === 'lowres') { + // Small resolution, 4:3 + height = 240; + maxHeight = 240; + width = 320; + } else if(media.video === 'lowres-16:9') { + // Small resolution, 16:9 + height = 180; + maxHeight = 180; + width = 320; + } else if(media.video === 'hires' || media.video === 'hires-16:9' ) { + // High resolution is only 16:9 + height = 720; + maxHeight = 720; + width = 1280; + if(navigator.mozGetUserMedia) { + var firefoxVer = parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10); + if(firefoxVer < 38) { + // Unless this is and old Firefox, which doesn't support it + Janus.warn(media.video + " unsupported, falling back to stdres (old Firefox)"); + height = 480; + maxHeight = 480; + width = 640; + } + } + } else if(media.video === 'stdres') { + // Normal resolution, 4:3 + height = 480; + maxHeight = 480; + width = 640; + } else if(media.video === 'stdres-16:9') { + // Normal resolution, 16:9 + height = 360; + maxHeight = 360; + width = 640; + } else { + Janus.log("Default video setting (" + media.video + ") is stdres 4:3"); + height = 480; + maxHeight = 480; + width = 640; + } + Janus.log("Adding media constraint " + media.video); + if(navigator.mozGetUserMedia) { + var firefoxVer = parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10); + if(firefoxVer < 38) { + videoSupport = { + 'require': ['height', 'width'], + 'height': {'max': maxHeight, 'min': height}, + 'width': {'max': width, 'min': width} + }; + } else { + // http://stackoverflow.com/questions/28282385/webrtc-firefox-constraints/28911694#28911694 + // https://github.com/meetecho/janus-gateway/pull/246 + videoSupport = { + 'height': {'ideal': height}, + 'width': {'ideal': width} + }; + } + } else { + videoSupport = { + 'mandatory': { + 'maxHeight': maxHeight, + 'minHeight': height, + 'maxWidth': width, + 'minWidth': width + }, + 'optional': [] + }; + } + if(typeof media.video === 'object') { + videoSupport = media.video; + } + Janus.debug(videoSupport); + } else if(media.video === 'screen' || media.video === 'window') { + // Not a webcam, but screen capture + if(window.location.protocol !== 'https:') { + // Screen sharing mandates HTTPS + Janus.warn("Screen sharing only works on HTTPS, try the https:// version of this page"); + pluginHandle.consentDialog(false); + callbacks.error("Screen sharing only works on HTTPS, try the https:// version of this page"); + return; + } + // We're going to try and use the extension for Chrome 34+, the old approach + // for older versions of Chrome, or the experimental support in Firefox 33+ + var cache = {}; + function callbackUserMedia (error, stream) { + pluginHandle.consentDialog(false); + if(error) { + callbacks.error({code: error.code, name: error.name, message: error.message}); + } else { + streamsDone(handleId, jsep, media, callbacks, stream); + } + }; + function getScreenMedia(constraints, gsmCallback) { + Janus.log("Adding media constraint (screen capture)"); + Janus.debug(constraints); + navigator.mediaDevices.getUserMedia(constraints) + .then(function(stream) { gsmCallback(null, stream); }) + .catch(function(error) { pluginHandle.consentDialog(false); gsmCallback(error); }); + }; + if(adapter.browserDetails.browser === 'chrome') { + var chromever = adapter.browserDetails.version; + var maxver = 33; + if(window.navigator.userAgent.match('Linux')) + maxver = 35; // "known" crash in chrome 34 and 35 on linux + if(chromever >= 26 && chromever <= maxver) { + // Chrome 26->33 requires some awkward chrome://flags manipulation + constraints = { + video: { + mandatory: { + googLeakyBucket: true, + maxWidth: window.screen.width, + maxHeight: window.screen.height, + maxFrameRate: 3, + chromeMediaSource: 'screen' + } + }, + audio: isAudioSendEnabled(media) + }; + getScreenMedia(constraints, callbackUserMedia); + } else { + // Chrome 34+ requires an extension + var pending = window.setTimeout( + function () { + error = new Error('NavigatorUserMediaError'); + error.name = 'The required Chrome extension is not installed: click <a href="#">here</a> to install it. (NOTE: this will need you to refresh the page)'; + pluginHandle.consentDialog(false); + return callbacks.error(error); + }, 1000); + cache[pending] = [callbackUserMedia, null]; + window.postMessage({ type: 'janusGetScreen', id: pending }, '*'); + } + } else if (window.navigator.userAgent.match('Firefox')) { + var ffver = parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10); + if(ffver >= 33) { + // Firefox 33+ has experimental support for screen sharing + constraints = { + video: { + mozMediaSource: media.video, + mediaSource: media.video + }, + audio: isAudioSendEnabled(media) + }; + getScreenMedia(constraints, function (err, stream) { + callbackUserMedia(err, stream); + // Workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1045810 + if (!err) { + var lastTime = stream.currentTime; + var polly = window.setInterval(function () { + if(!stream) + window.clearInterval(polly); + if(stream.currentTime == lastTime) { + window.clearInterval(polly); + if(stream.onended) { + stream.onended(); + } + } + lastTime = stream.currentTime; + }, 500); + } + }); + } else { + var error = new Error('NavigatorUserMediaError'); + error.name = 'Your version of Firefox does not support screen sharing, please install Firefox 33 (or more recent versions)'; + pluginHandle.consentDialog(false); + callbacks.error(error); + return; + } + } + + // Wait for events from the Chrome Extension + window.addEventListener('message', function (event) { + if(event.origin != window.location.origin) + return; + if(event.data.type == 'janusGotScreen' && cache[event.data.id]) { + var data = cache[event.data.id]; + var callback = data[0]; + delete cache[event.data.id]; + + if (event.data.sourceId === '') { + // user canceled + var error = new Error('NavigatorUserMediaError'); + error.name = 'You cancelled the request for permission, giving up...'; + pluginHandle.consentDialog(false); + callbacks.error(error); + } else { + constraints = { + audio: isAudioSendEnabled(media), + video: { + mandatory: { + chromeMediaSource: 'desktop', + maxWidth: window.screen.width, + maxHeight: window.screen.height, + maxFrameRate: 3 + }, + optional: [ + {googLeakyBucket: true}, + {googTemporalLayeredScreencast: true} + ] + } + }; + constraints.video.mandatory.chromeMediaSourceId = event.data.sourceId; + getScreenMedia(constraints, callback); + } + } else if (event.data.type == 'janusGetScreenPending') { + window.clearTimeout(event.data.id); + } + }); + return; + } + } + // If we got here, we're not screensharing + if(media === null || media === undefined || media.video !== 'screen') { + // Check whether all media sources are actually available or not + navigator.mediaDevices.enumerateDevices().then(function(devices) { + var audioExist = devices.some(function(device) { + return device.kind === 'audioinput'; + }), + videoExist = devices.some(function(device) { + return device.kind === 'videoinput'; + }); + + // Check whether a missing device is really a problem + var audioSend = isAudioSendEnabled(media); + var videoSend = isVideoSendEnabled(media); + var needAudioDevice = isAudioSendRequired(media); + var needVideoDevice = isVideoSendRequired(media); + if(audioSend || videoSend || needAudioDevice || needVideoDevice) { + // We need to send either audio or video + var haveAudioDevice = audioSend ? audioExist : false; + var haveVideoDevice = videoSend ? videoExist : false; + if(!haveAudioDevice && !haveVideoDevice) { + // FIXME Should we really give up, or just assume recvonly for both? + pluginHandle.consentDialog(false); + callbacks.error('No capture device found'); + return false; + } else if(!haveAudioDevice && needAudioDevice) { + pluginHandle.consentDialog(false); + callbacks.error('Audio capture is required, but no capture device found'); + return false; + } else if(!haveVideoDevice && needVideoDevice) { + pluginHandle.consentDialog(false); + callbacks.error('Video capture is required, but no capture device found'); + return false; + } + } + + navigator.mediaDevices.getUserMedia({ + audio: audioExist ? audioSupport : false, + video: videoExist ? videoSupport : false + }) + .then(function(stream) { pluginHandle.consentDialog(false); streamsDone(handleId, jsep, media, callbacks, stream); }) + .catch(function(error) { pluginHandle.consentDialog(false); callbacks.error({code: error.code, name: error.name, message: error.message}); }); + }) + .catch(function(error) { + pluginHandle.consentDialog(false); + callbacks.error('enumerateDevices error', error); + }); + } + } else { + // No need to do a getUserMedia, create offer/answer right away + streamsDone(handleId, jsep, media, callbacks); + } + } + + function prepareWebrtcPeer(handleId, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : webrtcError; + var jsep = callbacks.jsep; + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + callbacks.error("Invalid handle"); + return; + } + var config = pluginHandle.webrtcStuff; + if(jsep !== undefined && jsep !== null) { + if(config.pc === null) { + Janus.warn("Wait, no PeerConnection?? if this is an answer, use createAnswer and not handleRemoteJsep"); + callbacks.error("No PeerConnection: if this is an answer, use createAnswer and not handleRemoteJsep"); + return; + } + if(adapter.browserDetails.browser === "edge") { + // This is Edge, add an a=end-of-candidates at the end + jsep.sdp += "a=end-of-candidates\r\n"; + } + config.pc.setRemoteDescription( + new RTCSessionDescription(jsep), + function() { + Janus.log("Remote description accepted!"); + callbacks.success(); + }, callbacks.error); + } else { + callbacks.error("Invalid JSEP"); + } + } + + function createOffer(handleId, media, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + callbacks.error("Invalid handle"); + return; + } + var config = pluginHandle.webrtcStuff; + Janus.log("Creating offer (iceDone=" + config.iceDone + ")"); + // https://code.google.com/p/webrtc/issues/detail?id=3508 + var mediaConstraints = null; + if(adapter.browserDetails.browser == "firefox" || adapter.browserDetails.browser == "edge") { + mediaConstraints = { + 'offerToReceiveAudio':isAudioRecvEnabled(media), + 'offerToReceiveVideo':isVideoRecvEnabled(media) + }; + } else { + mediaConstraints = { + 'mandatory': { + 'OfferToReceiveAudio':isAudioRecvEnabled(media), + 'OfferToReceiveVideo':isVideoRecvEnabled(media) + } + }; + } + Janus.debug(mediaConstraints); + config.pc.createOffer( + function(offer) { + Janus.debug(offer); + if(config.mySdp === null || config.mySdp === undefined) { + Janus.log("Setting local description"); + config.mySdp = offer.sdp; + config.pc.setLocalDescription(offer); + } + if(!config.iceDone && !config.trickle) { + // Don't do anything until we have all candidates + Janus.log("Waiting for all candidates..."); + return; + } + if(config.sdpSent) { + Janus.log("Offer already sent, not sending it again"); + return; + } + Janus.log("Offer ready"); + Janus.debug(callbacks); + config.sdpSent = true; + // JSON.stringify doesn't work on some WebRTC objects anymore + // See https://code.google.com/p/chromium/issues/detail?id=467366 + var jsep = { + "type": offer.type, + "sdp": offer.sdp + }; + callbacks.success(jsep); + }, callbacks.error, mediaConstraints); + } + + function createAnswer(handleId, media, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + callbacks.error("Invalid handle"); + return; + } + var config = pluginHandle.webrtcStuff; + Janus.log("Creating answer (iceDone=" + config.iceDone + ")"); + var mediaConstraints = null; + if(adapter.browserDetails.browser == "firefox" || adapter.browserDetails.browser == "edge") { + mediaConstraints = { + 'offerToReceiveAudio':isAudioRecvEnabled(media), + 'offerToReceiveVideo':isVideoRecvEnabled(media) + }; + } else { + mediaConstraints = { + 'mandatory': { + 'OfferToReceiveAudio':isAudioRecvEnabled(media), + 'OfferToReceiveVideo':isVideoRecvEnabled(media) + } + }; + } + Janus.debug(mediaConstraints); + config.pc.createAnswer( + function(answer) { + Janus.debug(answer); + if(config.mySdp === null || config.mySdp === undefined) { + Janus.log("Setting local description"); + config.mySdp = answer.sdp; + config.pc.setLocalDescription(answer); + } + if(!config.iceDone && !config.trickle) { + // Don't do anything until we have all candidates + Janus.log("Waiting for all candidates..."); + return; + } + if(config.sdpSent) { // FIXME badly + Janus.log("Answer already sent, not sending it again"); + return; + } + config.sdpSent = true; + // JSON.stringify doesn't work on some WebRTC objects anymore + // See https://code.google.com/p/chromium/issues/detail?id=467366 + var jsep = { + "type": answer.type, + "sdp": answer.sdp + }; + callbacks.success(jsep); + }, callbacks.error, mediaConstraints); + } + + function sendSDP(handleId, callbacks) { + callbacks = callbacks || {}; + callbacks.success = (typeof callbacks.success == "function") ? callbacks.success : Janus.noop; + callbacks.error = (typeof callbacks.error == "function") ? callbacks.error : Janus.noop; + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle, not sending anything"); + return; + } + var config = pluginHandle.webrtcStuff; + Janus.log("Sending offer/answer SDP..."); + if(config.mySdp === null || config.mySdp === undefined) { + Janus.warn("Local SDP instance is invalid, not sending anything..."); + return; + } + config.mySdp = { + "type": config.pc.localDescription.type, + "sdp": config.pc.localDescription.sdp + }; + if(config.sdpSent) { + Janus.log("Offer/Answer SDP already sent, not sending it again"); + return; + } + if(config.trickle === false) + config.mySdp["trickle"] = false; + Janus.debug(callbacks); + config.sdpSent = true; + callbacks.success(config.mySdp); + } + + function getVolume(handleId) { + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + return 0; + } + var config = pluginHandle.webrtcStuff; + // Start getting the volume, if getStats is supported + if(config.pc.getStats && adapter.browserDetails.browser == "chrome") { // FIXME + if(config.remoteStream === null || config.remoteStream === undefined) { + Janus.warn("Remote stream unavailable"); + return 0; + } + // http://webrtc.googlecode.com/svn/trunk/samples/js/demos/html/constraints-and-stats.html + if(config.volume.timer === null || config.volume.timer === undefined) { + Janus.log("Starting volume monitor"); + config.volume.timer = setInterval(function() { + config.pc.getStats(function(stats) { + var results = stats.result(); + for(var i=0; i<results.length; i++) { + var res = results[i]; + if(res.type == 'ssrc' && res.stat('audioOutputLevel')) { + config.volume.value = res.stat('audioOutputLevel'); + } + } + }); + }, 200); + return 0; // We don't have a volume to return yet + } + return config.volume.value; + } else { + Janus.log("Getting the remote volume unsupported by browser"); + return 0; + } + } + + function isMuted(handleId, video) { + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + return true; + } + var config = pluginHandle.webrtcStuff; + if(config.pc === null || config.pc === undefined) { + Janus.warn("Invalid PeerConnection"); + return true; + } + if(config.myStream === undefined || config.myStream === null) { + Janus.warn("Invalid local MediaStream"); + return true; + } + if(video) { + // Check video track + if(config.myStream.getVideoTracks() === null + || config.myStream.getVideoTracks() === undefined + || config.myStream.getVideoTracks().length === 0) { + Janus.warn("No video track"); + return true; + } + return !config.myStream.getVideoTracks()[0].enabled; + } else { + // Check audio track + if(config.myStream.getAudioTracks() === null + || config.myStream.getAudioTracks() === undefined + || config.myStream.getAudioTracks().length === 0) { + Janus.warn("No audio track"); + return true; + } + return !config.myStream.getAudioTracks()[0].enabled; + } + } + + function mute(handleId, video, mute) { + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + return false; + } + var config = pluginHandle.webrtcStuff; + if(config.pc === null || config.pc === undefined) { + Janus.warn("Invalid PeerConnection"); + return false; + } + if(config.myStream === undefined || config.myStream === null) { + Janus.warn("Invalid local MediaStream"); + return false; + } + if(video) { + // Mute/unmute video track + if(config.myStream.getVideoTracks() === null + || config.myStream.getVideoTracks() === undefined + || config.myStream.getVideoTracks().length === 0) { + Janus.warn("No video track"); + return false; + } + config.myStream.getVideoTracks()[0].enabled = mute ? false : true; + return true; + } else { + // Mute/unmute audio track + if(config.myStream.getAudioTracks() === null + || config.myStream.getAudioTracks() === undefined + || config.myStream.getAudioTracks().length === 0) { + Janus.warn("No audio track"); + return false; + } + config.myStream.getAudioTracks()[0].enabled = mute ? false : true; + return true; + } + } + + function getBitrate(handleId) { + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined || + pluginHandle.webrtcStuff === null || pluginHandle.webrtcStuff === undefined) { + Janus.warn("Invalid handle"); + return "Invalid handle"; + } + var config = pluginHandle.webrtcStuff; + if(config.pc === null || config.pc === undefined) + return "Invalid PeerConnection"; + // Start getting the bitrate, if getStats is supported + if(config.pc.getStats && adapter.browserDetails.browser == "chrome") { + // Do it the Chrome way + if(config.remoteStream === null || config.remoteStream === undefined) { + Janus.warn("Remote stream unavailable"); + return "Remote stream unavailable"; + } + // http://webrtc.googlecode.com/svn/trunk/samples/js/demos/html/constraints-and-stats.html + if(config.bitrate.timer === null || config.bitrate.timer === undefined) { + Janus.log("Starting bitrate timer (Chrome)"); + config.bitrate.timer = setInterval(function() { + config.pc.getStats(function(stats) { + var results = stats.result(); + for(var i=0; i<results.length; i++) { + var res = results[i]; + if(res.type == 'ssrc' && res.stat('googFrameHeightReceived')) { + config.bitrate.bsnow = res.stat('bytesReceived'); + config.bitrate.tsnow = res.timestamp; + if(config.bitrate.bsbefore === null || config.bitrate.tsbefore === null) { + // Skip this round + config.bitrate.bsbefore = config.bitrate.bsnow; + config.bitrate.tsbefore = config.bitrate.tsnow; + } else { + // Calculate bitrate + var bitRate = Math.round((config.bitrate.bsnow - config.bitrate.bsbefore) * 8 / (config.bitrate.tsnow - config.bitrate.tsbefore)); + config.bitrate.value = bitRate + ' kbits/sec'; + //~ Janus.log("Estimated bitrate is " + config.bitrate.value); + config.bitrate.bsbefore = config.bitrate.bsnow; + config.bitrate.tsbefore = config.bitrate.tsnow; + } + } + } + }); + }, 1000); + return "0 kbits/sec"; // We don't have a bitrate value yet + } + return config.bitrate.value; + } else if(config.pc.getStats && adapter.browserDetails.browser == "firefox") { + // Do it the Firefox way + if(config.remoteStream === null || config.remoteStream === undefined + || config.remoteStream.stream === null || config.remoteStream.stream === undefined) { + Janus.warn("Remote stream unavailable"); + return "Remote stream unavailable"; + } + var videoTracks = config.remoteStream.stream.getVideoTracks(); + if(videoTracks === null || videoTracks === undefined || videoTracks.length < 1) { + Janus.warn("No video track"); + return "No video track"; + } + // https://github.com/muaz-khan/getStats/blob/master/getStats.js + if(config.bitrate.timer === null || config.bitrate.timer === undefined) { + Janus.log("Starting bitrate timer (Firefox)"); + config.bitrate.timer = setInterval(function() { + // We need a helper callback + var cb = function(res) { + if(res === null || res === undefined || + res.inbound_rtp_video_1 == null || res.inbound_rtp_video_1 == null) { + config.bitrate.value = "Missing inbound_rtp_video_1"; + return; + } + config.bitrate.bsnow = res.inbound_rtp_video_1.bytesReceived; + config.bitrate.tsnow = res.inbound_rtp_video_1.timestamp; + if(config.bitrate.bsbefore === null || config.bitrate.tsbefore === null) { + // Skip this round + config.bitrate.bsbefore = config.bitrate.bsnow; + config.bitrate.tsbefore = config.bitrate.tsnow; + } else { + // Calculate bitrate + var bitRate = Math.round((config.bitrate.bsnow - config.bitrate.bsbefore) * 8 / (config.bitrate.tsnow - config.bitrate.tsbefore)); + config.bitrate.value = bitRate + ' kbits/sec'; + config.bitrate.bsbefore = config.bitrate.bsnow; + config.bitrate.tsbefore = config.bitrate.tsnow; + } + }; + // Actually get the stats + config.pc.getStats(videoTracks[0], function(stats) { + cb(stats); + }, cb); + }, 1000); + return "0 kbits/sec"; // We don't have a bitrate value yet + } + return config.bitrate.value; + } else { + Janus.warn("Getting the video bitrate unsupported by browser"); + return "Feature unsupported by browser"; + } + } + + function webrtcError(error) { + Janus.error("WebRTC error:", error); + } + + function cleanupWebrtc(handleId, hangupRequest) { + Janus.log("Cleaning WebRTC stuff"); + var pluginHandle = pluginHandles[handleId]; + if(pluginHandle === null || pluginHandle === undefined) { + // Nothing to clean + return; + } + var config = pluginHandle.webrtcStuff; + if(config !== null && config !== undefined) { + if(hangupRequest === true) { + // Send a hangup request (we don't really care about the response) + var request = { "janus": "hangup", "transaction": Janus.randomString(12) }; + if(token !== null && token !== undefined) + request["token"] = token; + if(apisecret !== null && apisecret !== undefined) + request["apisecret"] = apisecret; + Janus.debug("Sending hangup request (handle=" + handleId + "):"); + Janus.debug(request); + if(websockets) { + request["session_id"] = sessionId; + request["handle_id"] = handleId; + ws.send(JSON.stringify(request)); + } else { + Janus.ajax({ + type: 'POST', + url: server + "/" + sessionId + "/" + handleId, + withCredentials: withCredentials, + cache: false, + contentType: "application/json", + data: JSON.stringify(request), + dataType: "json" + }); + } + } + // Cleanup stack + config.remoteStream = null; + if(config.volume.timer) + clearInterval(config.volume.timer); + config.volume.value = null; + if(config.bitrate.timer) + clearInterval(config.bitrate.timer); + config.bitrate.timer = null; + config.bitrate.bsnow = null; + config.bitrate.bsbefore = null; + config.bitrate.tsnow = null; + config.bitrate.tsbefore = null; + config.bitrate.value = null; + try { + // Try a MediaStream.stop() first + if(!config.streamExternal && config.myStream !== null && config.myStream !== undefined) { + Janus.log("Stopping local stream"); + config.myStream.stop(); + } + } catch(e) { + // Do nothing if this fails + } + try { + // Try a MediaStreamTrack.stop() for each track as well + if(!config.streamExternal && config.myStream !== null && config.myStream !== undefined) { + Janus.log("Stopping local stream tracks"); + var tracks = config.myStream.getTracks(); + for(var i in tracks) { + var mst = tracks[i]; + Janus.log(mst); + if(mst !== null && mst !== undefined) + mst.stop(); + } + } + } catch(e) { + // Do nothing if this fails + } + config.streamExternal = false; + config.myStream = null; + // Close PeerConnection + try { + config.pc.close(); + } catch(e) { + // Do nothing + } + config.pc = null; + config.mySdp = null; + config.iceDone = false; + config.sdpSent = false; + config.dataChannel = null; + config.dtmfSender = null; + } + pluginHandle.oncleanup(); + } + + // Helper methods to parse a media object + function isAudioSendEnabled(media) { + Janus.debug("isAudioSendEnabled:", media); + if(media === undefined || media === null) + return true; // Default + if(media.audio === false) + return false; // Generic audio has precedence + if(media.audioSend === undefined || media.audioSend === null) + return true; // Default + return (media.audioSend === true); + } + + function isAudioSendRequired(media) { + Janus.debug("isAudioSendRequired:", media); + if(media === undefined || media === null) + return false; // Default + if(media.audio === false || media.audioSend === false) + return false; // If we're not asking to capture audio, it's not required + if(media.failIfNoAudio === undefined || media.failIfNoAudio === null) + return false; // Default + return (media.failIfNoAudio === true); + } + + function isAudioRecvEnabled(media) { + Janus.debug("isAudioRecvEnabled:", media); + if(media === undefined || media === null) + return true; // Default + if(media.audio === false) + return false; // Generic audio has precedence + if(media.audioRecv === undefined || media.audioRecv === null) + return true; // Default + return (media.audioRecv === true); + } + + function isVideoSendEnabled(media) { + Janus.debug("isVideoSendEnabled:", media); + if(media === undefined || media === null) + return true; // Default + if(media.video === false) + return false; // Generic video has precedence + if(media.videoSend === undefined || media.videoSend === null) + return true; // Default + return (media.videoSend === true); + } + + function isVideoSendRequired(media) { + Janus.debug("isVideoSendRequired:", media); + if(media === undefined || media === null) + return false; // Default + if(media.video === false || media.videoSend === false) + return false; // If we're not asking to capture video, it's not required + if(media.failIfNoVideo === undefined || media.failIfNoVideo === null) + return false; // Default + return (media.failIfNoVideo === true); + } + + function isVideoRecvEnabled(media) { + Janus.debug("isVideoRecvEnabled:", media); + if(media === undefined || media === null) + return true; // Default + if(media.video === false) + return false; // Generic video has precedence + if(media.videoRecv === undefined || media.videoRecv === null) + return true; // Default + return (media.videoRecv === true); + } + + function isDataEnabled(media) { + Janus.debug("isDataEnabled:", media); + if(adapter.browserDetails.browser == "edge") { + Janus.warn("Edge doesn't support data channels yet"); + return false; + } + if(media === undefined || media === null) + return false; // Default + return (media.data === true); + } + + function isTrickleEnabled(trickle) { + Janus.debug("isTrickleEnabled:", trickle); + if(trickle === undefined || trickle === null) + return true; // Default is true + return (trickle === true); + } +}; |