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<html>
<head>
<title>play-from-disk-renegotation</title>
</head>
<body>
<button onclick="window.addVideo()"> Add Video </button><br />
<button onclick="window.removeVideo()"> Remove Video </button><br />
<h3> Video </h3>
<div id="remoteVideos"></div> <br />
<h3> Logs </h3>
<div id="logs"></div>
</body>
<script>
let activeVideos = 0
let pc = new RTCPeerConnection({
iceServers: [
{
urls: 'stun:stun.l.google.com:19302'
}
]
})
pc.ontrack = function (event) {
var el = document.createElement(event.track.kind)
el.srcObject = event.streams[0]
el.autoplay = true
el.controls = true
event.track.onmute = function(event) {
el.parentNode.removeChild(el);
}
document.getElementById('remoteVideos').appendChild(el)
}
let doSignaling = method => {
pc.createOffer()
.then(offer => {
pc.setLocalDescription(offer)
return fetch(`/${method}`, {
method: 'post',
headers: {
'Accept': 'application/json, text/plain, */*',
'Content-Type': 'application/json'
},
body: JSON.stringify(offer)
})
})
.then(res => res.json())
.then(res => pc.setRemoteDescription(res))
.catch(alert)
}
// Create a noop DataChannel. By default PeerConnections do not connect
// if they have no media tracks or DataChannels
pc.createDataChannel('noop')
doSignaling('createPeerConnection')
window.addVideo = () => {
if (pc.getTransceivers().length <= activeVideos) {
pc.addTransceiver('video')
activeVideos++
}
doSignaling('addVideo')
};
window.removeVideo = () => {
doSignaling('removeVideo')
};
</script>
</html>
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