548 lines
19 KiB
TypeScript
548 lines
19 KiB
TypeScript
import {DivImportance, layoutManager} from "./LayoutManager";
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import {HtmlUtils} from "./HtmlUtils";
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const videoConstraint: boolean|MediaTrackConstraints = {
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width: { ideal: 1280 },
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height: { ideal: 720 },
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facingMode: "user"
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};
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export type UpdatedLocalStreamCallback = (media: MediaStream|null) => void;
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export type StartScreenSharingCallback = (media: MediaStream) => void;
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export type StopScreenSharingCallback = (media: MediaStream) => void;
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// TODO: Split MediaManager in 2 classes: MediaManagerUI (in charge of HTML) and MediaManager (singleton in charge of the camera only)
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// TODO: verify that microphone event listeners are not triggered plenty of time NOW (since MediaManager is created many times!!!!)
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export class MediaManager {
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localStream: MediaStream|null = null;
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localScreenCapture: MediaStream|null = null;
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private remoteVideo: Map<string, HTMLVideoElement> = new Map<string, HTMLVideoElement>();
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myCamVideo: HTMLVideoElement;
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cinemaClose: HTMLImageElement;
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cinema: HTMLImageElement;
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monitorClose: HTMLImageElement;
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monitor: HTMLImageElement;
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microphoneClose: HTMLImageElement;
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microphone: HTMLImageElement;
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webrtcInAudio: HTMLAudioElement;
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constraintsMedia : MediaStreamConstraints = {
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audio: true,
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video: videoConstraint
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};
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updatedLocalStreamCallBacks : Set<UpdatedLocalStreamCallback> = new Set<UpdatedLocalStreamCallback>();
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startScreenSharingCallBacks : Set<StartScreenSharingCallback> = new Set<StartScreenSharingCallback>();
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stopScreenSharingCallBacks : Set<StopScreenSharingCallback> = new Set<StopScreenSharingCallback>();
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private microphoneBtn: HTMLDivElement;
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private cinemaBtn: HTMLDivElement;
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private monitorBtn: HTMLDivElement;
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constructor() {
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this.myCamVideo = this.getElementByIdOrFail<HTMLVideoElement>('myCamVideo');
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this.webrtcInAudio = this.getElementByIdOrFail<HTMLAudioElement>('audio-webrtc-in');
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this.webrtcInAudio.volume = 0.2;
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this.microphoneBtn = this.getElementByIdOrFail<HTMLDivElement>('btn-micro');
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this.microphoneClose = this.getElementByIdOrFail<HTMLImageElement>('microphone-close');
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this.microphoneClose.style.display = "none";
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this.microphoneClose.addEventListener('click', (e: MouseEvent) => {
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e.preventDefault();
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this.enableMicrophone();
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//update tracking
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});
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this.microphone = this.getElementByIdOrFail<HTMLImageElement>('microphone');
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this.microphone.addEventListener('click', (e: MouseEvent) => {
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e.preventDefault();
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this.disableMicrophone();
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//update tracking
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});
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this.cinemaBtn = this.getElementByIdOrFail<HTMLDivElement>('btn-video');
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this.cinemaClose = this.getElementByIdOrFail<HTMLImageElement>('cinema-close');
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this.cinemaClose.style.display = "none";
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this.cinemaClose.addEventListener('click', (e: MouseEvent) => {
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e.preventDefault();
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this.enableCamera();
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//update tracking
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});
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this.cinema = this.getElementByIdOrFail<HTMLImageElement>('cinema');
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this.cinema.addEventListener('click', (e: MouseEvent) => {
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e.preventDefault();
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this.disableCamera();
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//update tracking
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});
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this.monitorBtn = this.getElementByIdOrFail<HTMLDivElement>('btn-monitor');
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this.monitorClose = this.getElementByIdOrFail<HTMLImageElement>('monitor-close');
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this.monitorClose.style.display = "block";
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this.monitorClose.addEventListener('click', (e: MouseEvent) => {
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e.preventDefault();
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this.enableScreenSharing();
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//update tracking
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});
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this.monitor = this.getElementByIdOrFail<HTMLImageElement>('monitor');
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this.monitor.style.display = "none";
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this.monitor.addEventListener('click', (e: MouseEvent) => {
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e.preventDefault();
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this.disableScreenSharing();
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//update tracking
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});
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}
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public onUpdateLocalStream(callback: UpdatedLocalStreamCallback): void {
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this.updatedLocalStreamCallBacks.add(callback);
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}
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public onStartScreenSharing(callback: StartScreenSharingCallback): void {
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this.startScreenSharingCallBacks.add(callback);
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}
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public onStopScreenSharing(callback: StopScreenSharingCallback): void {
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this.stopScreenSharingCallBacks.add(callback);
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}
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removeUpdateLocalStreamEventListener(callback: UpdatedLocalStreamCallback): void {
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this.updatedLocalStreamCallBacks.delete(callback);
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}
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private triggerUpdatedLocalStreamCallbacks(stream: MediaStream|null): void {
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for (const callback of this.updatedLocalStreamCallBacks) {
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callback(stream);
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}
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}
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private triggerStartedScreenSharingCallbacks(stream: MediaStream): void {
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for (const callback of this.startScreenSharingCallBacks) {
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callback(stream);
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}
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}
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private triggerStoppedScreenSharingCallbacks(stream: MediaStream): void {
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for (const callback of this.stopScreenSharingCallBacks) {
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callback(stream);
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}
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}
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public showGameOverlay(){
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const gameOverlay = this.getElementByIdOrFail('game-overlay');
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gameOverlay.classList.add('active');
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}
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public hideGameOverlay(){
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const gameOverlay = this.getElementByIdOrFail('game-overlay');
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gameOverlay.classList.remove('active');
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}
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private enableCamera() {
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this.cinemaClose.style.display = "none";
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this.cinemaBtn.classList.remove("disabled");
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this.cinema.style.display = "block";
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this.constraintsMedia.video = videoConstraint;
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this.getCamera().then((stream: MediaStream) => {
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this.triggerUpdatedLocalStreamCallbacks(stream);
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});
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}
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private async disableCamera() {
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this.cinemaClose.style.display = "block";
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this.cinema.style.display = "none";
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this.cinemaBtn.classList.add("disabled");
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this.constraintsMedia.video = false;
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this.myCamVideo.srcObject = null;
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this.stopCamera();
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if (this.constraintsMedia.audio !== false) {
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const stream = await this.getCamera();
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this.triggerUpdatedLocalStreamCallbacks(stream);
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} else {
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this.triggerUpdatedLocalStreamCallbacks(null);
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}
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}
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private enableMicrophone() {
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this.microphoneClose.style.display = "none";
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this.microphone.style.display = "block";
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this.microphoneBtn.classList.remove("disabled");
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this.constraintsMedia.audio = true;
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this.getCamera().then((stream) => {
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this.triggerUpdatedLocalStreamCallbacks(stream);
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});
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}
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private async disableMicrophone() {
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this.microphoneClose.style.display = "block";
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this.microphone.style.display = "none";
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this.microphoneBtn.classList.add("disabled");
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this.constraintsMedia.audio = false;
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this.stopMicrophone();
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if (this.constraintsMedia.video !== false) {
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const stream = await this.getCamera();
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this.triggerUpdatedLocalStreamCallbacks(stream);
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} else {
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this.triggerUpdatedLocalStreamCallbacks(null);
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}
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}
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private enableScreenSharing() {
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this.monitorClose.style.display = "none";
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this.monitor.style.display = "block";
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this.monitorBtn.classList.add("enabled");
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this.getScreenMedia().then((stream) => {
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this.triggerStartedScreenSharingCallbacks(stream);
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});
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}
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private disableScreenSharing() {
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this.monitorClose.style.display = "block";
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this.monitor.style.display = "none";
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this.monitorBtn.classList.remove("enabled");
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this.removeActiveScreenSharingVideo('me');
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this.localScreenCapture?.getTracks().forEach((track: MediaStreamTrack) => {
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track.stop();
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});
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if (this.localScreenCapture === null) {
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console.warn('Weird: trying to remove a screen sharing that is not enabled');
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return;
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}
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const localScreenCapture = this.localScreenCapture;
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this.getCamera().then((stream) => {
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this.triggerStoppedScreenSharingCallbacks(localScreenCapture);
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});
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this.localScreenCapture = null;
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}
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//get screen
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getScreenMedia() : Promise<MediaStream>{
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try {
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return this._startScreenCapture()
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.then((stream: MediaStream) => {
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this.localScreenCapture = stream;
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// If stream ends (for instance if user clicks the stop screen sharing button in the browser), let's close the view
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for (const track of stream.getTracks()) {
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track.onended = () => {
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this.disableScreenSharing();
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};
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}
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this.addScreenSharingActiveVideo('me', DivImportance.Normal);
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HtmlUtils.getElementByIdOrFail<HTMLVideoElement>('screen-sharing-me').srcObject = stream;
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return stream;
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})
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.catch((err: unknown) => {
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console.error("Error => getScreenMedia => ", err);
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throw err;
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});
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}catch (err) {
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return new Promise((resolve, reject) => { // eslint-disable-line no-unused-vars
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reject(err);
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});
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}
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}
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private _startScreenCapture() {
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// getDisplayMedia was moved to mediaDevices in 2018. Typescript definitions are not up to date yet.
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// See: https://github.com/w3c/mediacapture-screen-share/pull/86
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// https://github.com/microsoft/TypeScript/issues/31821
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if ((navigator as any).getDisplayMedia) { // eslint-disable-line @typescript-eslint/no-explicit-any
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return (navigator as any).getDisplayMedia({video: true}); // eslint-disable-line @typescript-eslint/no-explicit-any
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} else if ((navigator.mediaDevices as any).getDisplayMedia) { // eslint-disable-line @typescript-eslint/no-explicit-any
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return (navigator.mediaDevices as any).getDisplayMedia({video: true}); // eslint-disable-line @typescript-eslint/no-explicit-any
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} else {
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//return navigator.mediaDevices.getUserMedia(({video: {mediaSource: 'screen'}} as any));
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return new Promise((resolve, reject) => { // eslint-disable-line no-unused-vars
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reject("error sharing screen");
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});
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}
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}
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//get camera
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async getCamera(): Promise<MediaStream> {
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if (navigator.mediaDevices === undefined) {
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if (window.location.protocol === 'http:') {
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throw new Error('Unable to access your camera or microphone. You need to use a HTTPS connection.');
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} else {
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throw new Error('Unable to access your camera or microphone. Your browser is too old.');
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}
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}
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try {
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const stream = await navigator.mediaDevices.getUserMedia(this.constraintsMedia);
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this.localStream = stream;
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this.myCamVideo.srcObject = this.localStream;
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return stream;
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//TODO resize remote cam
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/*console.log(this.localStream.getTracks());
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let videoMediaStreamTrack = this.localStream.getTracks().find((media : MediaStreamTrack) => media.kind === "video");
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let {width, height} = videoMediaStreamTrack.getSettings();
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console.info(`${width}x${height}`); // 6*/
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} catch (err) {
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console.info("error get media ", this.constraintsMedia.video, this.constraintsMedia.audio, err);
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this.localStream = null;
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throw err;
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}
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}
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/**
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* Stops the camera from filming
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*/
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public stopCamera(): void {
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if (this.localStream) {
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for (const track of this.localStream.getVideoTracks()) {
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track.stop();
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}
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}
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}
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/**
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* Stops the microphone from listening
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*/
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public stopMicrophone(): void {
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if (this.localStream) {
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for (const track of this.localStream.getAudioTracks()) {
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track.stop();
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}
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}
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}
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setCamera(id: string): Promise<MediaStream> {
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let video = this.constraintsMedia.video;
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if (typeof(video) === 'boolean' || video === undefined) {
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video = {}
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}
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video.deviceId = {
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exact: id
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};
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return this.getCamera();
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}
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setMicrophone(id: string): Promise<MediaStream> {
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let audio = this.constraintsMedia.audio;
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if (typeof(audio) === 'boolean' || audio === undefined) {
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audio = {}
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}
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audio.deviceId = {
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exact: id
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};
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return this.getCamera();
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}
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/**
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*
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* @param userId
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*/
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addActiveVideo(userId: string, userName: string = ""){
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this.webrtcInAudio.play();
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userName = userName.toUpperCase();
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const color = this.getColorByString(userName);
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const html = `
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<div id="div-${userId}" class="video-container">
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<div class="connecting-spinner"></div>
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<div class="rtc-error" style="display: none"></div>
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<i id="name-${userId}" style="background-color: ${color};">${userName}</i>
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<img id="microphone-${userId}" src="resources/logos/microphone-close.svg">
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<video id="${userId}" autoplay></video>
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</div>
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`;
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layoutManager.add(DivImportance.Normal, userId, html);
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this.remoteVideo.set(userId, this.getElementByIdOrFail<HTMLVideoElement>(userId));
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}
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/**
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*
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* @param userId
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*/
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addScreenSharingActiveVideo(userId: string, divImportance: DivImportance = DivImportance.Important){
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//this.webrtcInAudio.play();
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userId = `screen-sharing-${userId}`;
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const html = `
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<div id="div-${userId}" class="video-container">
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<video id="${userId}" autoplay></video>
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</div>
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`;
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layoutManager.add(divImportance, userId, html);
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this.remoteVideo.set(userId, this.getElementByIdOrFail<HTMLVideoElement>(userId));
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}
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/**
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*
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* @param userId
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*/
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disabledMicrophoneByUserId(userId: number){
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const element = document.getElementById(`microphone-${userId}`);
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if(!element){
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return;
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}
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element.classList.add('active')
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}
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/**
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*
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* @param userId
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*/
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enabledMicrophoneByUserId(userId: number){
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const element = document.getElementById(`microphone-${userId}`);
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if(!element){
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return;
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}
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element.classList.remove('active')
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}
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/**
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*
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* @param userId
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*/
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disabledVideoByUserId(userId: number) {
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let element = document.getElementById(`${userId}`);
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if (element) {
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element.style.opacity = "0";
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}
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element = document.getElementById(`name-${userId}`);
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if (element) {
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element.style.display = "block";
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}
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}
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/**
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*
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* @param userId
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*/
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enabledVideoByUserId(userId: number){
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let element = document.getElementById(`${userId}`);
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if(element){
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element.style.opacity = "1";
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}
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element = document.getElementById(`name-${userId}`);
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if(element){
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element.style.display = "none";
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}
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}
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/**
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*
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* @param userId
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* @param stream
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*/
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addStreamRemoteVideo(userId: string, stream : MediaStream){
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const remoteVideo = this.remoteVideo.get(userId);
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if (remoteVideo === undefined) {
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console.error('Unable to find video for ', userId);
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return;
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}
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remoteVideo.srcObject = stream;
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}
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addStreamRemoteScreenSharing(userId: string, stream : MediaStream){
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// In the case of screen sharing (going both ways), we may need to create the HTML element if it does not exist yet
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const remoteVideo = this.remoteVideo.get(`screen-sharing-${userId}`);
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if (remoteVideo === undefined) {
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this.addScreenSharingActiveVideo(userId);
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}
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this.addStreamRemoteVideo(`screen-sharing-${userId}`, stream);
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}
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/**
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*
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* @param userId
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*/
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removeActiveVideo(userId: string){
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layoutManager.remove(userId);
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this.remoteVideo.delete(userId);
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}
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removeActiveScreenSharingVideo(userId: string) {
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this.removeActiveVideo(`screen-sharing-${userId}`)
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}
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isConnecting(userId: string): void {
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const connectingSpinnerDiv = this.getSpinner(userId);
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if (connectingSpinnerDiv === null) {
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return;
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}
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connectingSpinnerDiv.style.display = 'block';
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}
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isConnected(userId: string): void {
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const connectingSpinnerDiv = this.getSpinner(userId);
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if (connectingSpinnerDiv === null) {
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return;
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}
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connectingSpinnerDiv.style.display = 'none';
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}
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isError(userId: string): void {
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console.log("isError", `div-${userId}`);
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const element = document.getElementById(`div-${userId}`);
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if(!element){
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return;
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}
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const errorDiv = element.getElementsByClassName('rtc-error').item(0) as HTMLDivElement|null;
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if (errorDiv === null) {
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return;
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}
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errorDiv.style.display = 'block';
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}
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isErrorScreenSharing(userId: string): void {
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this.isError(`screen-sharing-${userId}`);
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}
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private getSpinner(userId: string): HTMLDivElement|null {
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const element = document.getElementById(`div-${userId}`);
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if(!element){
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return null;
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}
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const connnectingSpinnerDiv = element.getElementsByClassName('connecting-spinner').item(0) as HTMLDivElement|null;
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return connnectingSpinnerDiv;
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}
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/**
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*
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* @param str
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*/
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private getColorByString(str: String) : String|null {
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let hash = 0;
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if (str.length === 0) return null;
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for (let i = 0; i < str.length; i++) {
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hash = str.charCodeAt(i) + ((hash << 5) - hash);
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hash = hash & hash;
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}
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let color = '#';
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for (let i = 0; i < 3; i++) {
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const value = (hash >> (i * 8)) & 255;
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color += ('00' + value.toString(16)).substr(-2);
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}
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return color;
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|
}
|
|
|
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private getElementByIdOrFail<T extends HTMLElement>(id: string): T {
|
|
const elem = document.getElementById(id);
|
|
if (elem === null) {
|
|
throw new Error("Cannot find HTML element with id '"+id+"'");
|
|
}
|
|
// FIXME: does not check the type of the returned type
|
|
return elem as T;
|
|
}
|
|
|
|
}
|
|
|
|
export const mediaManager = new MediaManager();
|