142 lines
3.7 KiB
JavaScript
142 lines
3.7 KiB
JavaScript
//Get the Medooze Media Server interface
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const MediaServer = require("medooze-media-server");
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//Get Semantic SDP objects
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const SemanticSDP = require("semantic-sdp");
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const SDPInfo = SemanticSDP.SDPInfo;
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const MediaInfo = SemanticSDP.MediaInfo;
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const CandidateInfo = SemanticSDP.CandidateInfo;
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const DTLSInfo = SemanticSDP.DTLSInfo;
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const ICEInfo = SemanticSDP.ICEInfo;
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const StreamInfo = SemanticSDP.StreamInfo;
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const TrackInfo = SemanticSDP.TrackInfo;
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const Direction = SemanticSDP.Direction;
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const CodecInfo = SemanticSDP.CodecInfo;
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const Capabilities = {
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video : {
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codecs : ["h264;packetization-mode=1"],
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rtx : true,
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rtcpfbs : [
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{ "id": "goog-remb"},
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{ "id": "transport-cc"},
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{ "id": "ccm", "params": ["fir"]},
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{ "id": "nack"},
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{ "id": "nack", "params": ["pli"]}
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],
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extensions : [
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"urn:3gpp:video-orientation",
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"http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01",
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"urn:ietf:params:rtp-hdrext:sdes:mid",
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"urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id",
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"urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id",
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"http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time"
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],
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simulcast : true
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}
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};
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module.exports = function(request,protocol,endpoint)
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{
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const connection = request.accept(protocol);
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connection.on('message', (frame) =>
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{
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//Get cmd
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var msg = JSON.parse(frame.utf8Data);
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//Get cmd
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if (msg.cmd==="OFFER")
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{
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//Process the sdp
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var offer = SDPInfo.process(msg.offer);
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//Create an DTLS ICE transport in that enpoint
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const transport = endpoint.createTransport(offer);
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//Set RTP remote properties
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transport.setRemoteProperties(offer);
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//Enable bandwidth probing
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transport.setBandwidthProbing(true);
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transport.setMaxProbingBitrate(300*1000);
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//Create local SDP info
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const answer = offer.answer({
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dtls : transport.getLocalDTLSInfo(),
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ice : transport.getLocalICEInfo(),
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candidates : endpoint.getLocalCandidates(),
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capabilities : Capabilities
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});
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//Set RTP local properties
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transport.setLocalProperties({
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video : answer.getMedia("video")
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});
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//Get timestamp
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const ts = Date.now();
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//Dump contents
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transport.dump("recordings/simulcast-"+ts+".pcap");
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//Create recoreder
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//const recorder = MediaServer.createRecorder ("recordings/simulcast"+ts +".mp4");
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//For each stream offered
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for (let offered of offer.getStreams().values())
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{
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//Create the remote stream into the transport
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const incomingStream = transport.createIncomingStream(offered);
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//Create new local stream
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const outgoingStream = transport.createOutgoingStream({
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audio: false,
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video: true
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});
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//Get local stream info
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const info = outgoingStream.getStreamInfo();
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//Copy incoming data from the remote stream to the local one
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connection.transporder = outgoingStream.attachTo(incomingStream)[0];
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//Add local stream info it to the answer
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answer.addStream(info);
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setInterval(()=>{
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//console.dir(incomingStream.getStats(),{depth:null});
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//console.log(outgoingStream.getStats());
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},1000);
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//Record it
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//recorder.record(incomingStream);
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}
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//Send response
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connection.sendUTF(JSON.stringify({
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answer : answer.toString().replace("h264","H264")
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}));
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console.log("OFFER");
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console.log(msg.offer);
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console.log("ANSWER");
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console.log(answer.toString().replace("h264","H264"));
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//Close on disconnect
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connection.on("close",() => {
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//Stop transport an recorded
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transport.stop();
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//recorder.stop();
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});
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} else {
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connection.transporder.selectEncoding(msg.rid);
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//Select layer
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connection.transporder.selectLayer(parseInt(msg.spatialLayerId),parseInt(msg.temporalLayerId));
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}
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});
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};
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