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<!doctype html>
<html lang="en">
<head>
<title>Bookclub session</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
body {
background-image: url("fhp2.jpeg");
background-color: #cccccc;
background-position: center;
background-size: cover;
background-repeat: no-repeat;
}
.footer {
position: fixed;
left: 0;
bottom: 0;
width: 100%;
color: white;
text-align: center;
}
html, body { height: 100%; width: 100%; margin: 0; }
.all { height: 100%; width: 100%;}
</style>
</head>
<body>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" crossorigin="anonymous"></script>
<a href="index.html"><h1 id="title" class="text-center">Bookclub session</h1></a>
<div class="card container-fluid all">
<div id="remotes" class="card-header" >
<canvas id="brady" width="1200" height="150"></canvas>
<div id="vids" class="row no-gutters" >
<div class="col" id="-0.9"></div>
<div class="col" id="-0.8"></div>
<div class="col" id="-0.6"></div>
<div class="col" id="-0.4"></div>
<div class="col" id="-0.2"></div>
<div class="col" id="0"></div>
<div class="col" id="0.2"></div>
<div class="col" id="0.4"></div>
<div class="col" id="0.6"></div>
<div class="col" id="0.8"></div>
<div class="col" id="0.9"></div>
</div>
<video id="them" style="width:100%;height:fit-content;" autoplay playsinline > </video>
<audio id="audio" style="display:none;" autoplay playsinline > </audio>
</div>
<video id="bookVideo" muted autoplay="true" class="card-img-top" poster="fhp2.jpeg">Book goes here</video>
<div class="card-body">
<div id="chosenAction" class="row justify-content-around">
<button id="mute" type="button" class="col-4 btn btn-primary btn-lg"><i id="muteIcon" class="fa fa-microphone fa-2x" aria-hidden="true"></i></button>
<button id="stopCall" type="button" class="col-4 btn btn-primary btn-lg"><i id="stopIcon" class="fa fa-stop fa-2x" aria-hidden="true"></i></button>
<button id="recordCall" type="button" class="btn btn-danger" data-toggle="button" aria-pressed="false" autocomplete="off">
Record Call
</button>
</div>
</div>
<div class="card-footer">
<h2><span class="badge badge-primary" id="role"></span><span class="badge badge-primary" id="status"></span></h2>
<!--div style="width: 80px; height: 80px;" id="me">me</div-->
<br/>
<span>See our <a href="https://github.com/pipe/bookclub">Github</a> for source code</span>
<span>See also <a href="https://pi.pe/privacy_policy/index.html">Privacy</a>
and <a href="https://pi.pe/impressum/index.html">Impressum</a></span>
</div>
</div>
<div id="share" class="modal" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">Send this url to the members. </h5>
</div>
<div class="modal-body" id="shareQR">
<p>Share this URL to start a session</p>
<p>You can use the share icon at the top of the screen</p>
<p>Then email/sms it to each of the book club members</p>
<p>Then press 'done'</p>
</div>
<div class="modal-footer">
<button id="shareDone" type="button" class="btn btn-secondary" data-dismiss="modal" >Done</button>
</div>
</div>
</div>
</div>
<div id="shareScreen" class="modal" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">Share the book. </h5>
</div>
<div class="modal-body" id="sharePrompt">
<p>If you have an electronic copy of the book on this computer</p>
<p>you can use the 'Share Book' button to select the window containing the book.</p>
<p>This will share your view of the book with the other members.</p>
<p>If you don't have the book, click 'No e-Book'</p>
</div>
<div class="modal-footer">
<button id="shareMyApp" type="button" class="btn btn-secondary" data-dismiss="modal" >Share Book</button>
<button id="noShareApp" type="button" class="btn btn-secondary" data-dismiss="modal" >No e-Book</button>
</div>
</div>
</div>
</div>
<div id="accept" class="modal" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">Accept a book club session</h5>
</div>
<div class="modal-body">
<p>Click 'accept' to start the call.</p>
<p>You also need to permit access to your microphone</p>
</div>
<div class="modal-footer">
<button id="callAccept" type="button" class="btn btn-secondary" data-dismiss="modal" >Accept</button>
</div>
</div>
</div>
</div>
<div id="nowebrtc" class="modal" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">Sorry</h5>
</div>
<div class="modal-body">
<p>Unfortunately the browser you are using does not support WebRTC.</p>
<p>Please retry using Safari, Chrome, FireFox, Edge - or pretty much any modern browser</p>
</div>
<div class="modal-footer">
<button id="sadder" type="button" class="btn btn-secondary" data-dismiss="modal" >Accept</button>
</div>
</div>
</div>
</div>
<div id="nomediaapi" class="modal" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">Sorry</h5>
</div>
<div class="modal-body">
<p>Unfortunately the browser you are using does not support the full webAudio API.</p>
<p>Please try hosting the call with Chrome.</p>
<p>The members can use any modern browser</p>
</div>
<div class="modal-footer">
<button id="sad" type="button" class="btn btn-secondary" data-dismiss="modal" >Accept</button>
</div>
</div>
</div>
</div>
<script type="module">
var socket; // used to set up connection with our peers.
var mid;
var cid;
var myac;
var initiator;
var localStream;
var localdcomp;
var localpanned;
var mute = false;
var peerConnectionOfferAnswerCriteria = {offerToReceiveAudio: true, offerToReceiveVideo: true };
var AudioContext = window.AudioContext || window.webkitAudioContext;
var sessions = {};
var isChrome = ("chrome" in window);
var bookStream = null;
var recorder;
var chunks = [];
var saved = false;
var startRecTime = 0;
var properties = {};
//var myImage = null;
// really feature detection doesn't do it chrome's webaudio bugs are undetectable from the outside.
var pans = [ 0.9, -0.9, 0.2, -0.2, 0.6 , -0.6, 0.8, -0.8, 0.4, -0.4, 0.0];
var canv2d = document.getElementById("brady").getContext( '2d' );
var mcu;
function Session(id,lpan) {
this.checker = null;
this.lastLoss = 0;
this.lastRecv =0;
this.fid = id;
this.panned = null;
this.dcomp = null;
this.peerout = null;
this.peerin = null;
this.statusChannel = null;
this.audio = null;
this.audioLevel =0.0;
//this.img = null;
//this.imageData = null;
if (!lpan) {
this.pan = pans.pop();
console.log("created peer connection for " + id);
this.lcandyStash = [];
} else {
this.pc = null;
this.pan = lpan;
console.log("dummy entry for " + id );
}
console.log("pan is " + this.pan);
this.rdiv = document.createElement("div");
var remoteslot = document.getElementById(""+this.pan);
var canvas = document.getElementById("brady");
var height = canvas.clientHeight;
var width = Math.min(canvas.clientWidth /10,height*0.75);
if (initiator) {
// add an video tag per recipient because chrome needs some suckage on the pipe...
this.audio = document.createElement("video");
//this.audio.setAttribute("style","display: none;");
this.audio.muted = true;
this.audio.setAttribute("autoplay","true");
this.audio.setAttribute("width",width);
this.audio.setAttribute("height",height);
console.log("Set video width x height to "+width+" x "+height);
this.rdiv.appendChild(this.audio);
this.rdiv.setAttribute("style","border-width:medium; border-style:hidden;")
}
//Robohash.render(this.fid,this.rdiv);
remoteslot.appendChild(this.rdiv);
};
Session.prototype.offerDeal = function (data) {
this.setupRTC();
this.pc.setRemoteDescription(data).then(_ =>
this.pc.createAnswer(peerConnectionOfferAnswerCriteria).then(ans => {
ans.sdp = tweakSDP(ans.sdp);
this.pc.setLocalDescription(ans).then(_ =>
sendMessage(this.fid, mid, "answer", ans.sdp)
)
})
).catch((e) => console.log("set Remote offer error", e));
};
Session.prototype.answerDeal = function(data){
this.pc.setRemoteDescription(data)
.then( _ => {
//$("#action").text("hangup");
})
.catch(e => console.log("set Remote answer error", e) );
};
Session.prototype.candidateDeal = function(data){
var jc = {
sdpMLineIndex: 0,
candidate: data.sdp
};
console.log("adding candidate ", jc);
var nc = new RTCIceCandidate(jc);
this.pc.addIceCandidate(nc)
.then( _ => console.log("added remote candidate"))
.catch((e) => console.log("couldn't add candidate ", e));
};
Session.prototype.stopSession = function() {
console.log("removing " + this.fid);
delete sessions[this.fid];
var that = this;
if (initiator) {
Object.entries(sessions).forEach(sessionkva => {
var session = sessionkva[1];
if (that.dcomp && session.panned) {
session.panned.disconnect(that.dcomp);
}
if (that.panned && session.dcomp) {
that.panned.disconnect(session.dcomp);
}
if (session.statusChannel && (session.statusChannel.readyState == 'open')) {
session.statusChannel.send(JSON.stringify({act: 'del', fid: that.fid})); // I hear them
}
});
}
if (localpanned){
localpanned.disconnect(this.dcomp);
}
if (this.panned != null) {
this.panned.disconnect(localdcomp);
this.panned = null;
pans.push(this.pan);
}
if (this.dcomp != null) {
this.dcomp.disconnect();
this.dcomp = null;
}
if (this.peerout != null) {
this.peerout.disconnect();
this.peerout = null;
}
if (this.peerin != null){
this.peerin.disconnect();
this.peerin = null;
}
if (this.checker != null) {
window.clearTimeout(this.checker);
this.checker = null;
}
if(this.pc != null){
var mpc = this.pc;
window.setTimeout(function () {
if (initiator) {
mpc.close();
} else {
stopCall(); // that is if we killed the (only) pc then byebye
}
},5000);
this.pc = null;
}
if (this.rdiv) {
this.audio.srcObject = null;
this.audio.pause();
this.rdiv.removeChild(this.audio);
var remotes = this.rdiv.parentNode;
remotes.removeChild(this.rdiv);
}
var cw = canv2d.canvas.width;
var ch = canv2d.canvas.height;
canv2d.clearRect(0,0, cw, ch);
$("#status").text("Call connected to "+ Object.keys(sessions).length + " member(s).");
};
Session.prototype.setupRTC = function(){
console.log("setting up webRTC for "+this.fid);
this.pc = new RTCPeerConnection(properties.configuration, null);
this.pc.onicecandidate = (e) => {
console.log("local ice candidate", e.candidate);
if (e.candidate != null) {
if (candyProt(e.candidate.candidate).toUpperCase()!="TCP") {
if (this.pc.signalingState == 'stable') {
sendMessage(this.fid, mid, "candidate", e.candidate.candidate);
} else {
console.log("stashing ice candidate");
this.lcandyStash.push(e.candidate);
}
} else {
console.log("skip TCP candidates");
}
}
};
this.pc.oniceconnectionstatechange = (e) => {
console.log("ice state is changed", this.pc.iceConnectionState);
/*
"new" The ICE agent is gathering addresses or is waiting to be given remote candidates through calls to RTCPeerConnection.addIceCandidate() (or both).
"checking" The ICE agent has been given one or more remote candidates and is checking pairs of local and remote candidates against one another to try to find a compatible match, but has not yet found a pair which will allow the peer connection to be made. It's possible that gathering of candidates is also still underway.
"connected" A usable pairing of local and remote candidates has been found for all components of the connection, and the connection has been established. It's possible that gathering is still underway, and it's also possible that the ICE agent is still checking candidates against one another looking for a better connection to use.
"completed" The ICE agent has finished gathering candidates, has checked all pairs against one another, and has found a connection for all components.
"failed" The ICE candidate has checked all candidates pairs against one another and has failed to find compatible matches for all components of the connection. It is, however, possible that the ICE agent did find compatible connections for some components.
"disconnected" Checks to ensure that components are still connected failed for at least one component of the RTCPeerConnection. This is a less stringent test than "failed" and may trigger intermittently and resolve just as spontaneously on less reliable networks, or during temporary disconnections. When the problem resolves, the connection may return to the "connected" state.
"closed"
*/
if (this.pc.iceConnectionState === "failed"){
this.stopSession();
}
if (this.pc.iceConnectionState === "disconnected"){
this.stopSession();
}
};
// specification of WEBRTC is in flux - so we test to see if ontrack callback exists
if ('ontrack' in this.pc) {
// if so we use it
this.pc.ontrack = (event) => {
var stream = event.streams[0];
console.log("got remote track ", event.track.kind);
this.addStream(stream,event.track.kind);
};
} else {
// if not we use add stream instead
this.pc.onaddstream = (event) => {
var stream = event.stream;
console.log("got remote stream ", stream.kind);
this.addStream(stream);
}
}
// use this to determine the state of the 'hangup' button and send any candidates we found quickly
this.pc.onsignalingstatechange = (evt) => {
if (this.pc != null) {
console.log("signalling state is ", this.pc.signalingState);
if (this.pc.signalingState == 'stable') {
var can;
while (can = this.lcandyStash.pop()) {
console.log("popping candidate off stash");
sendMessage(this.fid, mid, "candidate", can.candidate);
}
var act = $("#stopCall");
act.click(_ => stopCall());
window.onbeforeunload = function () {
return this.pc!=null ? "If you leave this page you will end the connection." : null;
}
}
}
};
this.pc.ondatachannel = (evt) => {
console.log("got new datachannel from " +this.fid);
this.statusChannel = evt.channel;
console.log("got new datachannel from " +this.statusChannel.label);
this.statusChannel.onopen = (ev) => {
console.log("got open datachannel from " +this.fid);
that.tellAll();
// don't tell them about us.
// that.statusChannel.send(JSON.stringify({act: 'add', fid: cid, pan: "0"}));
};
var that = this;
this.statusChannel.onmessage = (ev) => {
console.log("got data on datachannel from " +that.fid);
/*var mess = JSON.parse(ev.data);
if (mess.id == that.fid){
console.log("setting image data");
that.setImage(mess.img);
} */
}
};
};
Session.prototype.tellAll = function() {
var that = this;
Object.entries(sessions).forEach(sessionkva => {
var id = sessionkva[0];
var session = sessionkva[1];
// tell them about everyone (including themselves)
that.statusChannel.send(JSON.stringify({act: 'add', fid: session.fid, pan: session.pan}));
if (id != this.fid) {
// tell everyone (except them) about them
if ((session.statusChannel) && (session.statusChannel.readyState=='open')) {
session.statusChannel.send(JSON.stringify({act: 'add', fid: that.fid, pan: that.pan})); // I hear them
}
} else {
console.log("skip me " + id);
}
});
};
Session.prototype.addStream = function(stream,kind) {
if (!kind) {
kind = "audio/video";
}
$("#status").text("Call connected to " + Object.keys(sessions).length + " member(s).");
console.log("got new stream" + stream + " kind =" + kind);
if (kind.indexOf("audio") != -1) {
if (initiator) {
// inbound....
this.peerin = myac.createMediaStreamSource(stream);
this.panned = myac.createStereoPanner();
this.panned.pan.value = this.pan;
console.log("panned to " + this.pan);
this.peerin.connect(this.panned);
// now connect panned to :
// local destination...
// plug the panned output into our dcomp so we get the stereo effect as host.
if (localdcomp != null) {
this.panned.connect(localdcomp);
} else {
console.log("nowhere to plug " + this.fid);
}
var that = this;
// outbound
// for now just add the localpanned stream
this.dcomp = myac.createDynamicsCompressor();
if (localpanned) {
localpanned.connect(this.dcomp);
console.log("connect local stream to dcomp");
}
Object.entries(sessions).forEach(sessionkva => {
var id = sessionkva[0];
if (id != this.fid) {
var session = sessionkva[1];
if (that.panned && session.dcomp) {
that.panned.connect(session.dcomp); // they hear me
}
if (that.dcomp && session.panned) {
session.panned.connect(that.dcomp); // I hear them
}
} else {
console.log("skip me " + id);
}
});
this.peerout = myac.createMediaStreamDestination();
this.dcomp.connect(this.peerout);
var pc = this.pc;
var pstream = this.peerout.stream;
if (pc.addTrack) {
pstream.getTracks().forEach(track => {
pc.addTrack(track, pstream);
console.log("added panned outbound track ", track.id, track.kind, track.label);
});
if (mcu) {
mcu.getTracks().forEach(track => {
pc.addTrack(track, mcu);
console.log("added mcu outbound track ", track.id, track.kind, track.label);
});
}
if (bookStream){
bookStream.getTracks().forEach(track => {
pc.addTrack(track, bookStream);
console.log("added book outbound track ", track.id, track.kind, track.label);
});
}
} else {
pc.addStream(pstream);
console.log("added panned outbound stream");
if (mcu) {
pc.addStream(mcu);
console.log("added mcu outbound stream");
}
}
}
var that = this;
this.checker = window.setInterval(function () {
that.checkLoss();
}, 1000);
// audio together here.
// depends on role
console.log('Audio sample Rate is ' + myac.sampleRate);
$("#chosenAction").show();
$("#statsZone").show();
}
if (initiator) {
this.addVstream(stream, kind);
} else {
if (kind.indexOf("audio") != -1) {
console.log("added remote "+kind+" stream to audio");
var au = document.getElementById("audio");
au.srcObject = stream;
au.play();
} else {
var them = document.getElementById("them");
if (them.srcObject == null) {
console.log("added remote " + kind + " stream to videotag");
them.srcObject = stream;
$("#them").show();
} else {
var book = document.getElementById("bookVideo");
console.log("added remote " + kind + " stream to book");
book.srcObject = stream;
$("#bookVideo").show();
}
}
}
};
Session.prototype.addVstream = function(stream) {
// note that these only exist because chrome is weird and needs an audio tag
// which can (and should) be muted - so this makes no sound. - also video now
if (isChrome) {
this.audio.srcObject = stream;
this.audio.play();
console.log("added stream to local media object");
}
//var settings = getSize(stream);
var that = this;
var drawToCanvas = function () {
// draw the current frame of localVideo onto the canvas,
// starting at 0, 0 (top-left corner) and covering its full
// width and heigth
var cw = canv2d.canvas.clientWidth;
var ch = canv2d.canvas.clientHeight;
var vh = that.audio.videoHeight;
var vw = that.audio.videoWidth;
var rat = vw/vh;
var rw = Math.floor(ch *rat);
var abspan = (1.0 +that.pan) / 2 ;
var x = Math.floor((cw * abspan) - vw/2);
// void ctx.drawImage(image, sx, sy, sWidth, sHeight, dx, dy, dWidth, dHeight);
canv2d.drawImage(that.audio, 0, 0,vw,vh, x,0,rw,ch);
//console.log("drawing video for +"+that.fid+ " at " + x);
//repeat this every time a new frame becomes available using
//the browser's build-in requestAnimationFrame method
requestAnimationFrame(drawToCanvas);
}
//console.log("drawing video at " + x);
drawToCanvas();
};
Session.prototype.checkLoss = function(){
var that = this;
if (this.pc) {
this.pc.getReceivers()[0].getStats().then(
function (rs) {
var style = "";
rs.forEach(function (d) {
if (d.type === "inbound-rtp") {
var recvd = d.packetsReceived;
var lost = d.packetsLost;
var colour = "grey";
if (lost > that.lastLoss) {
var diffl = lost - that.lastLoss;
var diffp = recvd - that.lastRecv;
var pct = Math.ceil(100.0 * diffl / diffp);
if (pct > 0) {
colour = rgb(128 + pct, 128, 128);
}
}
that.lastLoss = lost;
that.lastRecv = recvd;
style += "background-color:" + colour + "; ";
}
if (d.type === "track") {
that.audioLevel = d.audioLevel;
var bwidth = Math.floor((that.audioLevel * 10.0));
if (bwidth >= 2){
style += " border-style:outset; ";
} else {
style += " border-style:hidden; ";
}
//console.log("bwidth ="+bwidth);
}
/*if ((d.type ==="candidate-pair")&&(d.nominated)){
$("#delay").text(""+d.currentRoundTripTime);
}
if (d.type === "remote-candidate"){
$("#remote").text(d.candidateType);
}
if (d.type === "local-candidate"){
$("#local").text(d.candidateType);
}*/
}
);
//that.rdiv.setAttribute("style", style);
//console.log("style ="+style);
});
}
}
function rgb
(r, g,
b){
r = Math.floor(r);
g = Math.floor(g);
b = Math.floor(b);
return ["rgb(",r,",",g,",",b,")"].join("");
}
// message stuff - used to create direct connection to peer over WEBRTC
function tweakSDP(sdp){
var lines = sdp.split("\r\n");
for (var i=0;i<lines.length;i++){
var line = lines[i];
if (line.startsWith("a=fmtp:111")){
lines[i]= "a=fmtp:111 minptime=20; stereo=1; ptime=60; useinbandfec=1; maxaveragebitrate=32000";
}
}
return (lines.join("\r\n"));
}
function messageDeal(event){
//console.log("message is ", event.data);
var data = JSON.parse(event.data);
console.log("message data is ", data);
if (data.to != mid){
alert("message mixup");
}
var session = sessions[data.from];
switch (data.type) {
case "offer":
if ((session == null) && (initiator)) {
session = new Session(data.from);
sessions[data.from] = session;
}
if (initiator){
session.offerDeal(data);
} else {
console.log("huh? Guests send offers");
}
break;
case "answer":
if ((session) && (!initiator)){
session.answerDeal(data);
}
break;
case "candidate":
if (session) {
session.candidateDeal(data);
} else {
console.log("should stash candidate for "+data.from);
}
break;
}
}
function candyProt(candy){
var ret = "none";
var bits = candy.split(" ");
if (bits.length >= 3){
ret = bits[2];
}
return ret;
}
function sendMessage(to,from,type,data){
var messageJ = {
to:to,
from:from,
type:type,
sdp:data
};
var message = JSON.stringify(messageJ);
console.log("sending ", messageJ);
socket.send(message);
}
// button actions
// this is singular -
function startCall(fid){
var that = sessions[cid];
var pc = that.pc;
that.statusChannel = pc.createDataChannel("status-"+Date.now());
that.statusChannel.onopen = () => {
console.log("guest's status channel opened - sending ping");
that.statusChannel.send(JSON.stringify({act:"ping",date:Date.now()}));
};
that.statusChannel.onclose = (e) => {
console.log("guest's status channel closed "+e);
};
that.statusChannel.onerror = (e) => {
console.log("guest's status channel errored "+e);
};
console.log("created status datachannel");
that.statusChannel.onmessage = (evt) => {
statusDeal(evt);
};
pc.createOffer(peerConnectionOfferAnswerCriteria)
.then(desc => {
console.log("offer created",);
$("#status").text("Making call to host");
desc.sdp = tweakSDP(desc.sdp);
pc.setLocalDescription(desc).then( d => sendMessage(fid, mid, desc.type, desc.sdp));
})
.catch(e => console.log("offer not created due to ", e) );
}
function stopCall(){
$("#status").text("Call ended.");
document.location = "thanks.html";
}
function statusDeal(evt){
console.log("got message "+evt.data);
var mo = JSON.parse(evt.data);
if (mo.act){
if (mo.act =="add"){
if (!sessions[mo.fid]) {
var sess = new Session(mo.fid, mo.pan);
console.log("adding user " + mo.fid);
sessions[mo.fid] = sess;
}
}
if (mo.act =="del"){
console.log("delete user "+mo.fid);
var sess = sessions[mo.fid]
if (sess){
sess.stopSession();
}
}
} else {
console.log("missing action");
}
$("#status").text("Call connected to "+ Object.keys(sessions).length + " member(s).");
}
// mute management
function setMute(m){
var mi = $("#muteIcon");
mute = m;
if (m){
mi.removeClass("fa-microphone");
mi.addClass("fa-microphone-slash");
} else {
mi.removeClass("fa-microphone-slash");
mi.addClass("fa-microphone");
}
var audioTracks = localStream.getAudioTracks();
if (audioTracks[0]) {
audioTracks[0].enabled = !m;
}
}
/*
function repaintDuration(){
var diff = Date.now() - startRecTime;
console.log ("data on at "+diff);
var mins = Math.floor(diff / 60000);
var secs = Math.floor((diff % 60000) / 1000);
$("#duration").text(""+mins+":"+secs);
}
*/
function captureCanvas(){
var can = document.getElementById("brady");
mcu = can.captureStream(5);
console.log("captured canvas stream");
}
// plumb the local audio together.
function setupAudio() {
myac = new AudioContext();
//setNoSleep();
var gumConstraints = {audio: true, video: {
width: { ideal: 240 },
height: { ideal: 320 },
frameRate: {ideal: 5},
//aspectRatio: { ideal: 1.7777777778 }
},};
// connect to our speakers
if (initiator){
// this works beautifully on firefox but fails in chrome
// unless we make a _lot_ of <audio> tags
localdcomp = myac.createDynamicsCompressor();
var dests = myac.createMediaStreamDestination();
localdcomp.connect(dests);
// set up play....
//console.log("local dcomp connected ");
document.getElementById("them").srcObject = dests.stream;
document.getElementById("them").play();
}
var promise = new Promise(function (resolve, reject) {
navigator.mediaDevices.getUserMedia(gumConstraints)
.then((stream) => {
localStream = stream;
// do magic pan stuff here....
if (initiator) {
var localsrc = myac.createMediaStreamSource(stream);
localpanned = myac.createStereoPanner();
localpanned.pan.value = 0.0;
console.log("local stream panned to 0.0 ");
localsrc.connect(localpanned);
// do something with video here - plunk it on our robot....
sessions[mid].addVstream(stream);
$("#brady").show();
$("#recordCall").show();
$("#them").muted = true;
captureCanvas();
} else {
var pc = sessions[cid].pc; // implicit detection of us being a guest
if (pc.addTrack) {
stream.getTracks().forEach(track => {
pc.addTrack(track, stream);
console.log("added local track ", track.id, track.kind);
});
} else {
pc.addStream(stream);
console.log("added local stream");
}
var bookshare = pc.addTransceiver("video", {direction:"recvonly"});
}
resolve(false);
})
.catch((e) => {
console.log('getUserMedia() error:' + e);
reject(e);
});
});
return promise;
}
function setupRTC() {
var session = new Session(cid);
session.setupRTC();
sessions[cid] = session;
}
var playing = false;
function toggleplay(){
var audio = document.getElementById('them');
if (!playing) {
audio.play();
} else {
audio.pause();
}
playing = ! playing;
}
function shared() {
setupRTC();
setupAudio().then(_ => {
console.log("ready for offer");
$("#status").text("Waiting for guests.");
});
}
function accepted() {
setupRTC();
setupAudio().then(_ => {
console.log("ready for offer");
$("#status").text("Mic available");
startCall(cid)
});
}
function repaintDuration(){
var diff = Date.now() - startRecTime;
console.log ("data on at "+diff);
var mins = Math.floor(diff / 60000);
var secs = Math.floor((diff % 60000) / 1000);
$("#recordCall").text(""+mins+":"+secs);
}
function recordCall() {
if (!recorder) {
startRecTime = Date.now();
var recStream = myac.createMediaStreamDestination();
recorder = new MediaRecorder(recStream.stream);
localpanned.connect(recStream);
localdcomp.connect(recStream);
recorder.ondataavailable = function (evt) {
chunks.push(evt.data);
repaintDuration();
};
recorder.onstop = function (evt) {
// Make blob out of our blobs, and open it.
var blob = new Blob(chunks, {'type': 'audio/ogg; codecs=opus'});
saveData(blob)
};
recorder.start(10000);
repaintDuration();
saved = false;
window.onbeforeunload = function() {
return !saved ? "If you leave this page you will lose the recording." : null;
}
} else {
recorder.stop();
recorder = null;
}
}
function saveData(blob) {
var fileName = 'Rendezvous-zone-'+new Date().toISOString() + '.webm';
console.log("Save data ?");
var a = document.createElement("a");
document.body.appendChild(a);
a.style = "display: none";
console.log("saving wav blob as " + fileName);
var burl = window.URL.createObjectURL(blob);
a.href = burl;
a.download = fileName;
a.click();
window.URL.revokeObjectURL(burl);
saved = true;
$("#status").text("Call saved as "+fileName);
}
function noShareApp() {
$('#share').modal('show');
}
async function shareMyApp() {
try {
var displayMediaOptions ={