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Update client code for renegotiation.
We now need to deal with the case where a track disappears from the labels array.
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2 changed files with 35 additions and 0 deletions
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@ -349,6 +349,15 @@ function gotDownStream(c) {
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c.ondowntrack = function(track, transceiver, label, stream) {
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setMedia(c, false);
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};
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c.onnegotiationcompleted = function() {
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let found = false;
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for(let key in c.labels) {
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if(c.labels[key] === 'video')
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found = true;
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}
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if(!found)
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resetMedia(c);
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}
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c.onstatus = function(status) {
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setMediaStatus(c);
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};
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@ -1372,6 +1381,22 @@ async function setMedia(c, isUp, mirror, video) {
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}
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}
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/**
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* resetMedia resets the source stream of the media element associated
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* with c. This has the side-effect of resetting any frozen frames.
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*
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* @param {Stream} c
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*/
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function resetMedia(c) {
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let media = /** @type {HTMLVideoElement} */
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(document.getElementById('media-' + c.localId));
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if(!media) {
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console.error("Resetting unknown media element")
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return;
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}
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media.srcObject = media.srcObject;
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}
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/**
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* @param {Element} elt
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*/
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@ -622,6 +622,16 @@ ServerConnection.prototype.gotOffer = async function(id, labels, source, usernam
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}
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c.labelsByMid = labels;
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c.labels = {};
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c.pc.getTransceivers().forEach(transceiver => {
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let label = c.labelsByMid[transceiver.mid];
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let track = transceiver.receiver && transceiver.receiver.track;
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if(label && track) {
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c.labels[track.id] = label;
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} else if(!track) {
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console.warn("Couldn't find track for label");
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}
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});
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c.source = source;
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c.username = username;
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