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index.html
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<!doctype html>
<html lang="en">
<head>
<title>Unrupt calls</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">
<style>
#chooseAction, #chosenAction, #audioInfo, #videoRow1, #videoRow2 {
display:none;
}
#in {
transform: rotateY(180deg);
}
video {
width: 320px;
}
#otherUser, #thisUser {
position: relative;
width: 320px;
height: 240px;
}
.playpause {
display: none;
width:25%;
position:absolute;
left:0;
right:0;
bottom:0;
margin:auto;
background-size:contain;
background-position: center;
z-index: 99999;
}
</style>
</head>
<body>
<h1 id="title" class="text-center">Unrupt Calls</h1>
<h3 id="useragent"></h3>
<!-- 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>
<div id="audioInfo" class="card">
<div>
<div class="card">
<h4 class="card-header">Media</h4>
<div class="card-body">
<div class="container">
<div class="row" id="videoRow1">
<div class="col-sm card">
<div class="card-header">Far Camera</div>
<div class="card-body">
<div id="otherUser">
<div id="pauseOther" class="playpause">
<object data="pause.svg"></object>
</div>
</div>
</div>
</div>
</div>
<!-- progress bar -->
<div class="row">
<div class="card-body">
<div class="progress">
<div id="unruptbuffer_spk" class="progress-bar progress-bar-striped bg-warning" role="progressbar" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
<div id="unruptbuffer_sil" class="progress-bar " role="progressbar" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<span id="unruptbuffer_len" class="badge pull-right"></span>
<span id="version" class="badge badge-secondary">default</span>
</div>
</div>
<!-- commented out rather than deleted for now -->
<!-- <div class="col-sm card"></div> -->
<!-- This Camera window -->
<div class="row" id="videoRow2">
<div class="col-sm card">
<div class="card-header">This Camera</div>
<div class="card-body">
<div id="thisUser"></div>
</div>
</div>
</div>
<!-- This should only be used for audio version -->
<!-- <div class="row">
<div class="col-sm card">
<div class="card-header">Far Microphone <span id="farscope-badge" class="badge badge-secondary">Silent</span></div>
<div class="card-body">
<canvas id="farscope" style="height:200px;width:200px;">Scope</canvas>
</div>
</div>
<div class="col-sm card">
<div class="card-header">Unrupt Buffer <span id="earscope-badge" class="badge badge-secondary">Silent</span>
</div>
<div class="card-body">
<canvas id="earscope" style="height:200px;width:200px;">Scope</canvas>
</div>
</div>
<div class="col-sm card">
<div class="card-header">This Microphone <span id="nearscope-badge" class="badge badge-secondary">Silent</span></div>
<div class="card-body">
<canvas id="nearscope" style="height:200px;width:200px;">Scope</canvas>
</div>
</div>
</div> -->
</div>
</div>
</div>
</div>
<!-- commented out rather than deleted for now -->
<!-- <h4 class="card-header">Buffered audio</h4>
<div class="card-body">
<div class="progress">
<div id="unruptbuffer_spk" class="progress-bar progress-bar-striped bg-warning" role="progressbar" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
<div id="unruptbuffer_sil" class="progress-bar " role="progressbar" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<span id="unruptbuffer_len" class="badge pull-right"></span>
<span id="version" class="badge badge-secondary">default</span>
</div> -->
</div>
<div class="card">
<h4 class="card-header">Call</h4>
<div class="card-body">
<div id="chooseAction">
<h5>Make Shareable Page</h5>
<button id="chooseActionAudio" type="button" class="btn btn-primary btn-lg">Audio</button>
<button id="chooseActionVideo" type="button" class="btn btn-primary btn-lg">Audio & Video</button>
<a href="ios.html">iOS</a>
<a href="ios-plus-new-layout.html">iOS & New Layout</a>
</div>
<div id="chosenAction">
<button id="action" type="button" class="btn btn-primary btn-lg"></button>
<button id="pause" type="button" class="btn btn-primary btn-lg">pause</button>
<button id="mute" type="button" class="btn btn-primary btn-lg">mute</button>
<button id="unruptToggle" type="button" class="btn btn-primary btn-lg">Pause-while-speaking on</button>
<span id="mode" class="badge badge-primary">Direct</span>
</div>
</div>
</div>
<script src="properties.js"></script>
<script>
var webRTCconfiguration = {
"iceServers": [
{urls: "stun:146.148.121.175:3478"},
{urls: "turn:146.148.121.175:3478?transport=udp", 'credential': 'nexus5x', 'username': 'smartphone'},
],
"bundlePolicy":"max-bundle","iceCandidatePoolSize":1
};
var pc; // actual peer connection to our friend
var socket; // used to set up connection with our peer.
var mid;
var fid;
var myac;
var yourac;
var initiator;
var lcandyStash = [];
var rcandyStash = [];
var localStream;
var remoteStream;
var scopes= [];
var procs = [];
var backlog = 0;
var backlog_sil = 0;
var backlog_spk = 0;
var tick;
var iamspeaking = false;
var mute = false;
var paused = false;
var videoEnabled = false;
var peerConnectionOfferAnswerCriteria = {offerToReceiveAudio: true, offerToReceiveVideo: false };
var unruptEnabled = true;
var toggleUnrupt;
// message stuff - used to create direct connection to peer over WEBRTC
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");
}
switch (data.type) {
case "cheatUnruptToggle":
toggleUnrupt();
break;
case "offer":
if (fid == null) {
fid = data.from;
}
pc.setRemoteDescription(data).then( _ =>
pc.createAnswer(peerConnectionOfferAnswerCriteria).then(ans =>
pc.setLocalDescription(ans).then( _ =>
sendMessage(fid, mid, "answer", ans.sdp)
)
)
)
.catch((e) => console.log("set Remote offer error", e));
break;
case "answer":
pc.setRemoteDescription(data)
.then( _ => {
$("#action").text("hangup");
})
.catch(e => console.log("set Remote answer error", e) );
break;
case "candidate":
var jc = {
sdpMLineIndex: 0,
candidate: data.sdp
};
console.log("adding candidate ", jc);
var nc = new RTCIceCandidate(jc);
pc.addIceCandidate(nc)
.then( _ => console.log("added remote candidate"))
.catch((e) => console.log("couldn't add candidate ", e));
break;
}
}
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
function startCall(cid){
lcandyStash = [];
rcandyStash = [];
fid = cid;
pc.createOffer(peerConnectionOfferAnswerCriteria)
.then(desc => {
console.log("offer created",);
pc.setLocalDescription(desc).then( d => sendMessage(fid, mid, desc.type, desc.sdp));
})
.catch(e => console.log("offer not created due to ", e) );
}
function stopCall(){
window.location.href = window.location.href;
}
// webaudio processing
// display waveform for diagnostics
function doScopeNode(ac, node, scopename) {
console.log("making scope node ", scopename);
var analyser = ac.createAnalyser();
analyser.fftSize = properties.scopeFftSize;
node.connect(analyser);
makeDraw(scopename, analyser);
scopes.push(analyser);
return analyser;
}
// processing incoming audio
function yourProc(node){
var buffer = yourac.createScriptProcessor(properties.procFramesize, 1, 1);
console.log("made unrupt buffer of size ", buffer.bufferSize, buffer);
var silentcount = 0;
var audiostash = [];
var ub = $('#unruptToggle');
var pb = $("#pause");
console.log('PauseButton!!!', pb);
var oldmute = false;
toggleUnrupt = () => {
if (unruptEnabled) {
unruptEnabled = false;
console.log('disconnecting the buffer');
node.disconnect(buffer);
document.getElementById('out').muted = false;
document.getElementById('out').play();
$('#pauseOther').hide();
ub.text('Pause-while-speaking off');
} else {
unruptEnabled = true;
console.log('connecting the buffer');
node.connect(buffer);
document.getElementById('out').muted = true;
ub.text('Pause-while-speaking on');
}
}
ub.off('click').on('click', (e) => {
e.stopImmediatePropagation();
toggleUnrupt();
sendMessage(fid, mid, "cheatUnruptToggle", true);
});
pb.off('click').on('click', (e) => {
e.stopImmediatePropagation();
console.log('clicked on pause!');
console.log('paused variable is', paused);
if (!paused){
paused = true;
pb.text("unpause");
oldmute = mute;
setMute(true);
} else {
paused = false;
pb.text("pause");
setMute(oldmute);
}
});
buffer.onaudioprocess = (ape) => {
console.log('ARE WE STILL PROCESSING AUDIO!?!');
if (!unruptEnabled) {
console.log('unrupt isnt enabled so clearing the backlog numbers');
backlog_sil = backlog_spk = 0;
return;
}
var inputBuffer = ape.inputBuffer;
// The output buffer contains the samples that will be modified and played
var outputBuffer = ape.outputBuffer;
// Loop through the output channels (in this case there is only one)
if (inputBuffer.numberOfChannels == 1){
var inputData = inputBuffer.getChannelData(0);
var outputData = outputBuffer.getChannelData(0);
// we (almost) always stash the inbound data
if (audiostash.length < properties.maxStashFrames) {
var buff = new Float32Array(inputBuffer.length);
var avg = 0.0;
for (var sample = 0; sample < inputBuffer.length; sample++) {
buff[sample] = inputData[sample]; // copy
avg += Math.abs(buff[sample]); // sample
}
avg = avg / inputBuffer.length;
var silent = (avg < properties.farSilenceThreshold);
if (silent){
silentcount++;
backlog_sil++;
} else {
silentcount =0;
backlog_spk++;
}
audiostash.unshift({silent: silent, buff:buff, silentcount: silentcount});
// store annotated version
}
backlog = audiostash.length /10;
if (paused || iamspeaking) {
for (var sample = 0; sample < inputBuffer.length; sample++) {
outputData[sample] = 0.0; // silence
}
} else {
var stash = audiostash.pop();
if (stash.silent){
backlog_sil--;
} else {
backlog_spk--;
}
var deleteme = (stash.silent);
while ((audiostash.length > 0) && (deleteme)){
console.log("have backlog", audiostash.length);
deleteme = false;
if (audiostash[0].silent){
console.log("next one is silent too");
if (stash.silentcount > properties.minFramesSilenceForPlay){
console.log("silentcount = ", stash.silentcount);
deleteme = true;
stash = audiostash.pop();
if (stash.silent){
backlog_sil--;
} else {
backlog_spk--;
}
}
}
}
var buff = stash.buff;
for (var sample = 0; sample < inputBuffer.length; sample++) {
outputData[sample] = buff[sample];
}
}
}
};
node.connect(buffer);
procs.push(buffer)
return buffer;
}
// mute management
function setMute(m){
var mb = $("#mute");
mute = m;
if (m){
mb.text("unmute");
} else {
mb.text("mute");
}
var audioTracks = localStream.getAudioTracks();
if (audioTracks[0]) {
audioTracks[0].enabled = !m;
}
}
// processing audio from the local microphone
function myProc(node){
var mb = $("#mute");
mb.click( () => {
setMute(!mute);
});
var buffer = myac.createScriptProcessor(properties.procFramesize, 1, 1);
console.log("made unrupt buffer of size ", buffer.bufferSize);
var silentcount = 0;
buffer.onaudioprocess = ape => {
var inputBuffer = ape.inputBuffer;
var outputBuffer = ape.outputBuffer;
// Loop through the output channels (in this case there is only one)
if (inputBuffer.numberOfChannels == 1){
var inputData = inputBuffer.getChannelData(0);
var outputData = outputBuffer.getChannelData(0);
// Loop through the 4096 samples
var avg = 0.0;
for (var sample = 0; sample < inputBuffer.length; sample++) {
// make output equal to the same as the input
outputData[sample] = inputData[sample];
avg += Math.abs(outputData[sample]); // sample
}
avg = avg / inputBuffer.length;
var silent = (avg < properties.micSilenceThreshold);
if (iamspeaking){
if (silent){
silentcount++;
}
if (silentcount > properties.minFramesSilenceForPause){
iamspeaking = false;
}
} else {
if (!silent) {
iamspeaking = true;
silentcount =0;
}
}
}
};
node.connect(buffer);
procs.push(buffer)
return buffer;
}
// called when webRTC presents us with a fresh remote audio stream
function addStream(stream) {
console.log("got new stream", stream);
remoteStream = stream;
var mediaElement = document.getElementById('out');
mediaElement.srcObject = stream;
//mediaElement.muted = true;
mediaElement.onloadedmetadata = function(e) {
mediaElement.play();
//mediaElement.muted = true;
};
var peer = yourac.createMediaStreamSource(stream);
console.log('Sample Rate is', yourac.sampleRate);
var scope = doScopeNode(yourac, peer, "farscope");
var buffproc = yourProc(scope);
var scope2 = doScopeNode(yourac, buffproc, "earscope");
scope2.connect(yourac.destination);
}
// configure local peerconnection and handlers
function setupRTC(){
pc = new RTCPeerConnection(webRTCconfiguration, null);
console.log("created peer connection");
pc.onicecandidate = (e) => {
console.log("local ice candidate", e.candidate);
if (e.candidate != null) {
if (pc.signalingState == 'stable') {
sendMessage(fid, mid, "candidate", e.candidate.candidate);
} else {
console.log("stashing ice candidate");
lcandyStash.push(e.candidate);
}
}
};
pc.oniceconnectionstatechange = (e) => {
console.log("ice state is changed", pc.iceConnectionState);
if (pc.iceConnectionState === "failed"){
stopCall();
}
};
// specification of WEBRTC is in flux - so we test to see if ontrack callback exists
if ('ontrack' in pc) {
// if so we use it
pc.ontrack = (event) => {
var stream = event.streams[0];
console.log("got remote track ", stream.kind);
addStream(stream);
};
} else {
// if not we use add stream instead
pc.onaddstream = (event) => {
var stream = event.stream;
console.log("got remote stream ", stream.kind);
addStream(stream);
}
}
// use this to determine the state of the 'hangup' button and send any candidates we found quickly
pc.onsignalingstatechange = (evt) => {
console.log("signalling state is ", pc.signalingState);
if (pc.signalingState == 'stable') {
var can;
while (can = lcandyStash.pop()) {
console.log("popping candidate off stash")
sendMessage(fid, mid, "candidate", can.candidate);
}
var act = $("#action");
act.text("hangup call");
act.click( _ => stopCall() );
}
};
}
// plumb the local audio together.
function setupAudio() {
var AudioContext = window.AudioContext || window.webkitAudioContext;
myac = new AudioContext();
yourac = new AudioContext();
navigator.mediaDevices.getUserMedia({audio: true, video: videoEnabled})
.then((stream) => {
if (videoEnabled) {
var ourMediaElement = document.getElementById('in');
ourMediaElement.srcObject = stream;
ourMediaElement.onloadedmetadata = function(e) {
ourMediaElement.play();
};
}
localStream = stream; // in case we need it
var node = myac.createMediaStreamSource(stream);
var detect = myProc(node);
var manl = doScopeNode(myac, detect, "nearscope");
var dest = myac.createMediaStreamDestination();
manl.connect(dest);
var lstream = dest.stream;
if (pc.addTrack) {
stream.getTracks().forEach(track => {
pc.addTrack(track, lstream);
console.log("added local track ", track.id, track.kind);
});
} else {
stream.getTracks().forEach(track => {
if (track.kind === 'video') {
lstream.addTrack(track);
}
});
pc.addStream(lstream);
console.log("added local stream");
}
})
.catch((e) => console.log('getUserMedia() error:', e.name));
}
// decide who we are initiator or recpient.
// notice that the actual call goes in the reverse direction
// the recipient of the invite actually creates the audiobearing peerconnection
// the initiator then accepts this audio - This allows the initiator the chance to
// change their mind, if their circumstances have changed since the invite was sent.
function setRole() {
var cid = $.getUrlVar("unruptId");
mid = sessionStorage['unruptId'];
var chooseAction = $("#chooseAction");
var chosenAction = $("#chosenAction");
var chooseActionAudio = $("#chooseActionAudio");
var chooseActionVideo = $("#chooseActionVideo");
var act = $("#action");
if (!mid) {
var array = new Uint32Array(8);
window.crypto.getRandomValues(array);
var hexCodes = [];
for (var i = 0; i < array.length; i ++ ){
// Using getUint32 reduces the number of iterations needed (we process 4 bytes each time)
var value = array[i];
// toString(16) will give the hex representation of the number without padding
var stringValue = value.toString(16)
// We use concatenation and slice for padding
var padding = '00000000'
var paddedValue = (padding + stringValue).slice(-padding.length)
hexCodes.push(paddedValue);
}
mid = hexCodes.join("").toLowerCase();
console.log("mid =", mid);
sessionStorage['unruptId'] = mid;
}
if (cid == null){
chooseAction.show();
chooseActionAudio.click( _ => {
document.location = location.pathname + "?" + "unruptId=" + mid;
});
chooseActionVideo.click( _ => {
document.location = location.pathname + "?" + "unruptId=" + mid + "&video=1";
});
} else {
chosenAction.show();
$('#audioInfo').show();
if (videoEnabled) {
$('#videoRow1').css('display', 'flex');
}
if (videoEnabled) {
$('#videoRow2').css('display', 'flex');
}
socket = new WebSocket( properties.websocketURL + mid);
socket.onmessage = messageDeal;
socket.onopen = (_) => {
console.log("connected as", mid);
setupRTC();
setupAudio();
initiator = (mid === cid);
if (initiator) {
act.text("please share this page as a link");
} else {
act.text("accept call");
act.click( () => startCall(cid));
}
};
socket.onerror = (e) => {
console.log("can't open websocket", e);
};
socket.onclose = (e) => {
console.log(" websocket closed", e);
};
}
}
// thing that draws the scopes...
function makeDraw(canvName, anode) {
var analyser = anode;
var speaking = false;
var bufferLength = analyser.frequencyBinCount;
var dataArray = new Uint8Array(bufferLength);
var canvas = document.getElementById(canvName);
var badge = document.getElementById(canvName + "-badge");
var canvasCtx = canvas.getContext("2d");
// oscilloscope - for debug.
var draw = _ => {
// Get a canvas defined with ID "oscilloscope"
var drawVisual = requestAnimationFrame(draw);
analyser.getByteTimeDomainData(dataArray);
canvasCtx.fillStyle = 'rgb(200, 200, 200)';
canvasCtx.fillRect(0, 0, canvas.width, canvas.height);
canvasCtx.lineWidth = 2;
canvasCtx.strokeStyle = 'rgb(0, 0, 0)';
canvasCtx.beginPath();
var sliceWidth = canvas.width * 1.0 / bufferLength;
var x = 0;
var tot = 0.0;
for (var i = 0; i < bufferLength; i++) {
var v = dataArray[i] / 128.0;
tot += Math.abs(dataArray[i]-128);
var y = v * canvas.height / 2;
if (i === 0) {
canvasCtx.moveTo(x, y);
} else {
canvasCtx.lineTo(x, y);
}
x += sliceWidth;
}
var mean = tot / bufferLength;
var newspeak = (mean > 2.0);
if (newspeak != speaking) {
speaking = newspeak;
//console.log("newspeak "+newspeak+" mean "+mean);
badge.innerText = speaking ? "Speaking" : "Silent";
}
canvasCtx.lineTo(canvas.width, canvas.height / 2);
canvasCtx.stroke();
};
draw();
}
// some housekeeping
$.extend({
getUrlVars: function(){
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
},
getUrlVar: function(name){
return $.getUrlVars()[name];
}
});
$( document ).ready( _ => {
videoEnabled = $.getUrlVar("video") == '1';
if(videoEnabled) {
peerConnectionOfferAnswerCriteria = {};
var otherUserMediaElement = document.createElement('video');
otherUserMediaElement.id = 'out';
otherUserMediaElement.muted = true;
document.getElementById('otherUser').appendChild(otherUserMediaElement);
var thisUserMediaElement = document.createElement('video');
thisUserMediaElement.id = 'in';
thisUserMediaElement.muted = true;
document.getElementById('thisUser').appendChild(thisUserMediaElement);
} else {
var mediaElement = document.createElement('audio');
mediaElement.id = 'out';
mediaElement.muted = true;
document.body.appendChild(mediaElement);
}
setRole();
$('#version').text(properties.versionname);
tick = window.setInterval( t => {
var scale = properties.maxStashFrames / 100.0;
var spk = backlog_spk / scale;
var sil = backlog_sil / scale;
var timeline = Math.floor((backlog_spk + backlog_sil) * properties.procFramesize / 44100.0);
$('#unruptbuffer_len').text(timeline + " seconds");
$('#unruptbuffer_sil').css('width', sil + "%").attr('aria-valuenow', sil);
$('#unruptbuffer_spk').css('width', spk + "%").attr('aria-valuenow', spk);
var playout = backlog > 1 ? "playing" : "direct";
var mode = (iamspeaking || paused) ? "paused" : playout;
$('#mode').text(mode);
if (remoteStream && videoEnabled && unruptEnabled) {
var pauseIcon = $('#pauseOther');
if (mode === "paused") {
otherUserMediaElement.pause();
pauseIcon.show();
} else {
otherUserMediaElement.play();
pauseIcon.hide();
}
}
}, 250);
});
</script>
</body>
</html>