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openvidu-browser: Publisher.replaceTrack method refactoring

pull/621/head
pabloFuente 2021-03-25 13:58:56 +01:00
parent eb914b5418
commit eae032405d
1 changed files with 51 additions and 22 deletions
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73
openvidu-browser/src/OpenVidu/Publisher.ts
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@ -304,26 +304,28 @@ export class Publisher extends StreamManager {
*/
replaceTrack(track: MediaStreamTrack): Promise<void> {
const replaceMediaStreamTrack = () => {
const mediaStream: MediaStream = this.stream.displayMyRemote() ? this.stream.localMediaStreamWhenSubscribedToRemote! : this.stream.getMediaStream();
let removedTrack: MediaStreamTrack;
if (track.kind === 'video') {
removedTrack = mediaStream.getVideoTracks()[0];
} else {
removedTrack = mediaStream.getAudioTracks()[0];
}
mediaStream.removeTrack(removedTrack);
removedTrack.stop();
mediaStream.addTrack(track);
if (this.stream.isLocalStreamPublished) {
this.openvidu.sendNewVideoDimensionsIfRequired(this, 'trackReplaced', 50, 30);
this.session.sendVideoData(this.stream.streamManager, 5, true, 5);
}
const replaceTrackInMediaStream = (): Promise<void> => {
return new Promise((resolve, reject) => {
const mediaStream: MediaStream = this.stream.displayMyRemote() ? this.stream.localMediaStreamWhenSubscribedToRemote! : this.stream.getMediaStream();
let removedTrack: MediaStreamTrack;
if (track.kind === 'video') {
removedTrack = mediaStream.getVideoTracks()[0];
} else {
removedTrack = mediaStream.getAudioTracks()[0];
}
mediaStream.removeTrack(removedTrack);
removedTrack.stop();
mediaStream.addTrack(track);
if (track.kind === 'video' && this.stream.isLocalStreamPublished) {
this.openvidu.sendNewVideoDimensionsIfRequired(this, 'trackReplaced', 50, 30);
this.session.sendVideoData(this.stream.streamManager, 5, true, 5);
}
resolve();
});
}
return new Promise((resolve, reject) => {
if (this.stream.isLocalStreamPublished) {
// Only if the Publisher has been published is necessary to call native Web API RTCRtpSender.replaceTrack
const replaceTrackInRtcRtpSender = (): Promise<void> => {
return new Promise((resolve, reject) => {
const senders: RTCRtpSender[] = this.stream.getRTCPeerConnection().getSenders();
let sender: RTCRtpSender | undefined;
if (track.kind === 'video') {
@ -343,17 +345,44 @@ export class Publisher extends StreamManager {
return;
}
(sender as RTCRtpSender).replaceTrack(track).then(() => {
replaceMediaStreamTrack();
resolve();
}).catch(error => {
reject(error);
});
});
}
return new Promise(async (resolve, reject) => {
// Set field "enabled" of the new track to the previous value
const trackOriginalEnabledValue: boolean = track.enabled;
if (track.kind === 'video') {
track.enabled = this.stream.videoActive;
} else if (track.kind === 'audio') {
track.enabled = this.stream.audioActive;
}
if (this.stream.isLocalStreamPublished) {
// Only if the Publisher has been published is necessary to call native Web API RTCRtpSender.replaceTrack
// If it has not been published yet, replacing it on the MediaStream object is enough
try {
await replaceTrackInRtcRtpSender();
await replaceTrackInMediaStream();
resolve();
} catch (error) {
track.enabled = trackOriginalEnabledValue;
reject(error);
}
} else {
// Publisher not published. Simply modify local MediaStream tracks
replaceMediaStreamTrack();
resolve();
// Publisher not published. Simply replace the track on the local MediaStream
try {
await replaceTrackInMediaStream();
resolve();
} catch (error) {
track.enabled = trackOriginalEnabledValue;
reject(error);
}
}
});
}
/* Hidden methods */