351 lines
11 KiB
TypeScript
351 lines
11 KiB
TypeScript
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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type UpdatedLocalStreamCallback = (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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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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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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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.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.enabledMicrophone();
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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.disabledMicrophone();
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//update tracking
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});
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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.enabledCamera();
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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.disabledCamera();
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//update tracking
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});
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}
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onUpdateLocalStream(callback: UpdatedLocalStreamCallback): void {
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this.updatedLocalStreamCallBacks.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): 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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activeVisio(){
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const webRtc = this.getElementByIdOrFail('webRtc');
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webRtc.classList.add('active');
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}
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enabledCamera() {
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this.cinemaClose.style.display = "none";
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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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disabledCamera() {
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this.cinemaClose.style.display = "block";
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this.cinema.style.display = "none";
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this.constraintsMedia.video = false;
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this.myCamVideo.srcObject = null;
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if (this.localStream) {
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this.localStream.getVideoTracks().forEach((MediaStreamTrack: MediaStreamTrack) => {
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MediaStreamTrack.stop();
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});
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}
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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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enabledMicrophone() {
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this.microphoneClose.style.display = "none";
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this.microphone.style.display = "block";
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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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disabledMicrophone() {
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this.microphoneClose.style.display = "block";
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this.microphone.style.display = "none";
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this.constraintsMedia.audio = false;
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if(this.localStream) {
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this.localStream.getAudioTracks().forEach((MediaStreamTrack: MediaStreamTrack) => {
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MediaStreamTrack.stop();
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});
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}
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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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//get camera
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getCamera(): Promise<MediaStream> {
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let promise = null;
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if (navigator.mediaDevices === undefined) {
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return Promise.reject<MediaStream>(new Error('Unable to access your camera or microphone. Your browser is too old (or you are running a development version of WorkAdventure on Firefox)'));
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}
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try {
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promise = navigator.mediaDevices.getUserMedia(this.constraintsMedia)
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.then((stream: MediaStream) => {
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this.localStream = stream;
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this.myCamVideo.srcObject = this.localStream;
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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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return stream;
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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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} catch (e) {
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promise = Promise.reject<MediaStream>(e);
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}
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return promise;
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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 = id;
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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 = id;
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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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const elementRemoteVideo = this.getElementByIdOrFail("activeCam");
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userName = userName.toUpperCase();
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const color = this.getColorByString(userName);
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elementRemoteVideo.insertAdjacentHTML('beforeend', `
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<div id="div-${userId}" class="video-container" style="border-color: ${color};">
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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 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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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: string){
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const element = document.getElementById(`microphone-${userId}`);
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if(!element){
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return;
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}
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element.classList.add('active')
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}
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/**
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*
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* @param userId
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*/
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enabledMicrophoneByUserId(userId: string){
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const element = document.getElementById(`microphone-${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: string) {
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let element = document.getElementById(`${userId}`);
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if (element) {
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element.style.opacity = "0";
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}
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element = document.getElementById(`div-${userId}`);
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if (!element) {
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return;
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}
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element.style.borderStyle = "solid";
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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: string){
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let element = document.getElementById(`${userId}`);
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if(element){
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element.style.opacity = "1";
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}
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element = document.getElementById(`div-${userId}`);
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if(!element){
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return;
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}
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element.style.borderStyle = "none";
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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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/**
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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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const element = document.getElementById(`div-${userId}`);
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if(!element){
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return;
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}
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element.remove();
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this.remoteVideo.delete(userId);
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}
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isConnecting(userId : string): void {
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const connectingSpinnerDiv = this.getSpinner(userId);
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if (connectingSpinnerDiv === null) {
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return;
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}
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connectingSpinnerDiv.style.display = 'block';
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}
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isConnected(userId : string): void {
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const connectingSpinnerDiv = this.getSpinner(userId);
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if (connectingSpinnerDiv === null) {
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return;
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}
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connectingSpinnerDiv.style.display = 'none';
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}
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isError(userId : string): void {
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const element = document.getElementById(`div-${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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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 {
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const elem = document.getElementById(id);
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if (elem === null) {
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throw new Error("Cannot find HTML element with id '"+id+"'");
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}
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// FIXME: does not check the type of the returned type
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return elem as T;
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}
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}
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export const mediaManager = new MediaManager();
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