const videoConstraint: boolean|MediaTrackConstraints = { width: { ideal: 1280 }, height: { ideal: 720 }, facingMode: "user" }; type UpdatedLocalStreamCallback = (media: MediaStream) => void; // TODO: Split MediaManager in 2 classes: MediaManagerUI (in charge of HTML) and MediaManager (singleton in charge of the camera only) // TODO: verify that microphone event listeners are not triggered plenty of time NOW (since MediaManager is created many times!!!!) export class MediaManager { localStream: MediaStream|null = null; private remoteVideo: Map = new Map(); myCamVideo: HTMLVideoElement; cinemaClose: HTMLImageElement; cinema: HTMLImageElement; microphoneClose: HTMLImageElement; microphone: HTMLImageElement; webrtcInAudio: HTMLAudioElement; constraintsMedia : MediaStreamConstraints = { audio: true, video: videoConstraint }; updatedLocalStreamCallBacks : Set = new Set(); constructor() { this.myCamVideo = this.getElementByIdOrFail('myCamVideo'); this.webrtcInAudio = this.getElementByIdOrFail('audio-webrtc-in'); this.webrtcInAudio.volume = 0.2; this.microphoneClose = this.getElementByIdOrFail('microphone-close'); this.microphoneClose.style.display = "none"; this.microphoneClose.addEventListener('click', (e: MouseEvent) => { e.preventDefault(); this.enabledMicrophone(); //update tracking }); this.microphone = this.getElementByIdOrFail('microphone'); this.microphone.addEventListener('click', (e: MouseEvent) => { e.preventDefault(); this.disabledMicrophone(); //update tracking }); this.cinemaClose = this.getElementByIdOrFail('cinema-close'); this.cinemaClose.style.display = "none"; this.cinemaClose.addEventListener('click', (e: MouseEvent) => { e.preventDefault(); this.enabledCamera(); //update tracking }); this.cinema = this.getElementByIdOrFail('cinema'); this.cinema.addEventListener('click', (e: MouseEvent) => { e.preventDefault(); this.disabledCamera(); //update tracking }); } onUpdateLocalStream(callback: UpdatedLocalStreamCallback): void { this.updatedLocalStreamCallBacks.add(callback); } removeUpdateLocalStreamEventListener(callback: UpdatedLocalStreamCallback): void { this.updatedLocalStreamCallBacks.delete(callback); } private triggerUpdatedLocalStreamCallbacks(stream: MediaStream): void { for (const callback of this.updatedLocalStreamCallBacks) { callback(stream); } } activeVisio(){ const webRtc = this.getElementByIdOrFail('webRtc'); webRtc.classList.add('active'); } enabledCamera() { this.cinemaClose.style.display = "none"; this.cinema.style.display = "block"; this.constraintsMedia.video = videoConstraint; this.getCamera().then((stream: MediaStream) => { this.triggerUpdatedLocalStreamCallbacks(stream); }); } disabledCamera() { this.cinemaClose.style.display = "block"; this.cinema.style.display = "none"; this.constraintsMedia.video = false; this.myCamVideo.srcObject = null; if (this.localStream) { this.localStream.getVideoTracks().forEach((MediaStreamTrack: MediaStreamTrack) => { MediaStreamTrack.stop(); }); } this.getCamera().then((stream) => { this.triggerUpdatedLocalStreamCallbacks(stream); }); } enabledMicrophone() { this.microphoneClose.style.display = "none"; this.microphone.style.display = "block"; this.constraintsMedia.audio = true; this.getCamera().then((stream) => { this.triggerUpdatedLocalStreamCallbacks(stream); }); } disabledMicrophone() { this.microphoneClose.style.display = "block"; this.microphone.style.display = "none"; this.constraintsMedia.audio = false; if(this.localStream) { this.localStream.getAudioTracks().forEach((MediaStreamTrack: MediaStreamTrack) => { MediaStreamTrack.stop(); }); } this.getCamera().then((stream) => { this.triggerUpdatedLocalStreamCallbacks(stream); }); } //get camera async getCamera(): Promise { if (navigator.mediaDevices === undefined) { if (window.location.protocol === 'http:') { throw new Error('Unable to access your camera or microphone. You need to use a HTTPS connection.'); } else { throw new Error('Unable to access your camera or microphone. Your browser is too old.'); } } try { const stream = await navigator.mediaDevices.getUserMedia(this.constraintsMedia); this.localStream = stream; this.myCamVideo.srcObject = this.localStream; return stream; //TODO resize remote cam /*console.log(this.localStream.getTracks()); let videoMediaStreamTrack = this.localStream.getTracks().find((media : MediaStreamTrack) => media.kind === "video"); let {width, height} = videoMediaStreamTrack.getSettings(); console.info(`${width}x${height}`); // 6*/ } catch (err) { console.info("error get media ", this.constraintsMedia.video, this.constraintsMedia.audio, err); this.localStream = null; throw err; } } setCamera(id: string): Promise { let video = this.constraintsMedia.video; if (typeof(video) === 'boolean' || video === undefined) { video = {} } video.deviceId = { exact: id }; return this.getCamera(); } setMicrophone(id: string): Promise { let audio = this.constraintsMedia.audio; if (typeof(audio) === 'boolean' || audio === undefined) { audio = {} } audio.deviceId = { exact: id }; return this.getCamera(); } /** * * @param userId */ addActiveVideo(userId : string, userName: string = ""){ this.webrtcInAudio.play(); const elementRemoteVideo = this.getElementByIdOrFail("activeCam"); userName = userName.toUpperCase(); const color = this.getColorByString(userName); elementRemoteVideo.insertAdjacentHTML('beforeend', `
${userName}
`); this.remoteVideo.set(userId, this.getElementByIdOrFail(userId)); } /** * * @param userId */ disabledMicrophoneByUserId(userId: string){ const element = document.getElementById(`microphone-${userId}`); if(!element){ return; } element.classList.add('active') } /** * * @param userId */ enabledMicrophoneByUserId(userId: string){ const element = document.getElementById(`microphone-${userId}`); if(!element){ return; } element.classList.remove('active') } /** * * @param userId */ disabledVideoByUserId(userId: string) { let element = document.getElementById(`${userId}`); if (element) { element.style.opacity = "0"; } element = document.getElementById(`div-${userId}`); if (!element) { return; } element.style.borderStyle = "solid"; } /** * * @param userId */ enabledVideoByUserId(userId: string){ let element = document.getElementById(`${userId}`); if(element){ element.style.opacity = "1"; } element = document.getElementById(`div-${userId}`); if(!element){ return; } element.style.borderStyle = "none"; } /** * * @param userId * @param stream */ addStreamRemoteVideo(userId : string, stream : MediaStream){ const remoteVideo = this.remoteVideo.get(userId); if (remoteVideo === undefined) { console.error('Unable to find video for ', userId); return; } remoteVideo.srcObject = stream; } /** * * @param userId */ removeActiveVideo(userId : string){ const element = document.getElementById(`div-${userId}`); if(!element){ return; } element.remove(); this.remoteVideo.delete(userId); } isConnecting(userId : string): void { const connectingSpinnerDiv = this.getSpinner(userId); if (connectingSpinnerDiv === null) { return; } connectingSpinnerDiv.style.display = 'block'; } isConnected(userId : string): void { const connectingSpinnerDiv = this.getSpinner(userId); if (connectingSpinnerDiv === null) { return; } connectingSpinnerDiv.style.display = 'none'; } isError(userId : string): void { const element = document.getElementById(`div-${userId}`); if(!element){ return; } const errorDiv = element.getElementsByClassName('rtc-error').item(0) as HTMLDivElement|null; if (errorDiv === null) { return; } errorDiv.style.display = 'block'; } private getSpinner(userId : string): HTMLDivElement|null { const element = document.getElementById(`div-${userId}`); if(!element){ return null; } const connnectingSpinnerDiv = element.getElementsByClassName('connecting-spinner').item(0) as HTMLDivElement|null; return connnectingSpinnerDiv; } /** * * @param str */ private getColorByString(str: String) : String|null { let hash = 0; if (str.length === 0) return null; for (let i = 0; i < str.length; i++) { hash = str.charCodeAt(i) + ((hash << 5) - hash); hash = hash & hash; } let color = '#'; for (let i = 0; i < 3; i++) { const value = (hash >> (i * 8)) & 255; color += ('00' + value.toString(16)).substr(-2); } return color; } private getElementByIdOrFail(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();