Merge pull request #1060 from thecodingmachine/media_manager_store

Switching MediaManager to using a Svelte store

front/dist/index.tmpl.html

@@ -73,7 +73,6 @@
                             <img id="microphone-close" src="resources/logos/microphone-close.svg">
                         </div>
                     </div>
-
                 </div>
             </div>
             <div id="cowebsite" class="cowebsite hidden">
@@ -108,7 +107,7 @@
                     </div>
                 </div>
                 <div class="audioplayer">
-                    <label id="label-audioplayer_decrease_while_talking" for="audiooplayer_decrease_while_talking" title="decrease background volume by 50% when entering conversations">
+                    <label id="label-audioplayer_decrease_while_talking" for="audioplayer_decrease_while_talking" title="decrease background volume by 50% when entering conversations">
                         reduce in conversations
                         <input type="checkbox" id="audioplayer_decrease_while_talking" checked />
                     </label>

front/src/Phaser/Game/GameScene.ts

@@ -92,6 +92,7 @@ import {PinchManager} from "../UserInput/PinchManager";
 import {joystickBaseImg, joystickBaseKey, joystickThumbImg, joystickThumbKey} from "../Components/MobileJoystick";
 import {DEPTH_OVERLAY_INDEX} from "./DepthIndexes";
 import {waScaleManager} from "../Services/WaScaleManager";
+import {peerStore} from "../../Stores/PeerStore";
 import {EmoteManager} from "./EmoteManager";
 
 export interface GameSceneInitInterface {
@@ -189,7 +190,6 @@ export class GameScene extends DirtyScene implements CenterListener {
     private originalMapUrl: string|undefined;
     private pinchManager: PinchManager|undefined;
     private mapTransitioning: boolean = false; //used to prevent transitions happenning at the same time.
-    private onVisibilityChangeCallback: () => void;
     private emoteManager!: EmoteManager;
 
     constructor(private room: Room, MapUrlFile: string, customKey?: string|undefined) {
@@ -210,7 +210,6 @@ export class GameScene extends DirtyScene implements CenterListener {
         this.connectionAnswerPromise = new Promise<RoomJoinedMessageInterface>((resolve, reject): void => {
             this.connectionAnswerPromiseResolve = resolve;
         });
-        this.onVisibilityChangeCallback = this.onVisibilityChange.bind(this);
     }
 
     //hook preload scene
@@ -515,8 +514,6 @@ export class GameScene extends DirtyScene implements CenterListener {
             this.connect();
         }
 
-        document.addEventListener('visibilitychange', this.onVisibilityChangeCallback);
-        
         this.emoteManager = new EmoteManager(this);
     }
 
@@ -622,6 +619,7 @@ export class GameScene extends DirtyScene implements CenterListener {
 
             // When connection is performed, let's connect SimplePeer
             this.simplePeer = new SimplePeer(this.connection, !this.room.isPublic, this.playerName);
+            peerStore.connectToSimplePeer(this.simplePeer);
             this.GlobalMessageManager = new GlobalMessageManager(this.connection);
             userMessageManager.setReceiveBanListener(this.bannedUser.bind(this));
 
@@ -639,7 +637,6 @@ export class GameScene extends DirtyScene implements CenterListener {
                         self.chatModeSprite.setVisible(false);
                         self.openChatIcon.setVisible(false);
                         audioManager.restoreVolume();
-                        self.onVisibilityChange();
                     }
                 }
             })
@@ -944,8 +941,6 @@ ${escapedMessage}
         for(const iframeEvents of this.iframeSubscriptionList){
             iframeEvents.unsubscribe();
         }
-
-        document.removeEventListener('visibilitychange', this.onVisibilityChangeCallback);
     }
 
     private removeAllRemotePlayers(): void {
@@ -1505,8 +1500,6 @@ ${escapedMessage}
         mediaManager.addTriggerCloseJitsiFrameButton('close-jisi',() => {
             this.stopJitsi();
         });
-
-        this.onVisibilityChange();
     }
 
     public stopJitsi(): void {
@@ -1515,7 +1508,6 @@ ${escapedMessage}
         mediaManager.showGameOverlay();
 
         mediaManager.removeTriggerCloseJitsiFrameButton('close-jisi');
-        this.onVisibilityChange();
     }
 
     //todo: put this into an 'orchestrator' scene (EntryScene?)
@@ -1555,20 +1547,4 @@ ${escapedMessage}
         waScaleManager.zoomModifier *= zoomFactor;
         this.updateCameraOffset();
     }
-
-    private onVisibilityChange(): void {
-        // If the overlay is not displayed, we are in Jitsi. We don't need the webcam.
-        if (!mediaManager.isGameOverlayVisible()) {
-            mediaManager.blurCamera();
-            return;
-        }
-
-        if (document.visibilityState === 'visible') {
-            mediaManager.focusCamera();
-        } else {
-            if (this.simplePeer.getNbConnections() === 0) {
-                mediaManager.blurCamera();
-            }
-        }
-    }
 }

front/src/Phaser/Login/EnableCameraScene.ts

@@ -10,6 +10,14 @@ import {PinchManager} from "../UserInput/PinchManager";
 import Zone = Phaser.GameObjects.Zone;
 import { MenuScene } from "../Menu/MenuScene";
 import {ResizableScene} from "./ResizableScene";
+import {
+    audioConstraintStore,
+    enableCameraSceneVisibilityStore,
+    localStreamStore,
+    mediaStreamConstraintsStore,
+    videoConstraintStore
+} from "../../Stores/MediaStore";
+import type {Unsubscriber} from "svelte/store";
 
 export const EnableCameraSceneName = "EnableCameraScene";
 enum LoginTextures {
@@ -40,6 +48,7 @@ export class EnableCameraScene extends ResizableScene {
     private enableCameraSceneElement!: Phaser.GameObjects.DOMElement;
 
     private mobileTapZone!: Zone;
+    private localStreamStoreUnsubscriber!: Unsubscriber;
 
     constructor() {
         super({
@@ -119,9 +128,20 @@ export class EnableCameraScene extends ResizableScene {
 
         HtmlUtils.getElementByIdOrFail<HTMLDivElement>('webRtcSetup').classList.add('active');
 
-        const mediaPromise = mediaManager.getCamera();
+        this.localStreamStoreUnsubscriber = localStreamStore.subscribe((result) => {
+            if (result.type === 'error') {
+                // TODO: proper handling of the error
+                throw result.error;
+            }
+
+            this.getDevices();
+            if (result.stream !== null) {
+                this.setupStream(result.stream);
+            }
+        });
+        /*const mediaPromise = mediaManager.getCamera();
         mediaPromise.then(this.getDevices.bind(this));
-        mediaPromise.then(this.setupStream.bind(this));
+        mediaPromise.then(this.setupStream.bind(this));*/
 
         this.input.keyboard.on('keydown-RIGHT', this.nextCam.bind(this));
         this.input.keyboard.on('keydown-LEFT', this.previousCam.bind(this));
@@ -133,6 +153,8 @@ export class EnableCameraScene extends ResizableScene {
         this.add.existing(this.soundMeterSprite);
 
         this.onResize();
+
+        enableCameraSceneVisibilityStore.showEnableCameraScene();
     }
 
     private previousCam(): void {
@@ -140,7 +162,9 @@ export class EnableCameraScene extends ResizableScene {
             return;
         }
         this.cameraSelected--;
-        mediaManager.setCamera(this.camerasList[this.cameraSelected].deviceId).then(this.setupStream.bind(this));
+        videoConstraintStore.setDeviceId(this.camerasList[this.cameraSelected].deviceId);
+
+        //mediaManager.setCamera(this.camerasList[this.cameraSelected].deviceId).then(this.setupStream.bind(this));
     }
 
     private nextCam(): void {
@@ -148,8 +172,10 @@ export class EnableCameraScene extends ResizableScene {
             return;
         }
         this.cameraSelected++;
+        videoConstraintStore.setDeviceId(this.camerasList[this.cameraSelected].deviceId);
+
         // TODO: the change of camera should be OBSERVED (reactive)
-        mediaManager.setCamera(this.camerasList[this.cameraSelected].deviceId).then(this.setupStream.bind(this));
+        //mediaManager.setCamera(this.camerasList[this.cameraSelected].deviceId).then(this.setupStream.bind(this));
     }
 
     private previousMic(): void {
@@ -157,7 +183,8 @@ export class EnableCameraScene extends ResizableScene {
             return;
         }
         this.microphoneSelected--;
-        mediaManager.setMicrophone(this.microphonesList[this.microphoneSelected].deviceId).then(this.setupStream.bind(this));
+        audioConstraintStore.setDeviceId(this.microphonesList[this.microphoneSelected].deviceId);
+        //mediaManager.setMicrophone(this.microphonesList[this.microphoneSelected].deviceId).then(this.setupStream.bind(this));
     }
 
     private nextMic(): void {
@@ -165,8 +192,9 @@ export class EnableCameraScene extends ResizableScene {
             return;
         }
         this.microphoneSelected++;
+        audioConstraintStore.setDeviceId(this.microphonesList[this.microphoneSelected].deviceId);
         // TODO: the change of camera should be OBSERVED (reactive)
-        mediaManager.setMicrophone(this.microphonesList[this.microphoneSelected].deviceId).then(this.setupStream.bind(this));
+        //mediaManager.setMicrophone(this.microphonesList[this.microphoneSelected].deviceId).then(this.setupStream.bind(this));
     }
 
     /**
@@ -260,15 +288,20 @@ export class EnableCameraScene extends ResizableScene {
         HtmlUtils.getElementByIdOrFail<HTMLDivElement>('webRtcSetup').style.display = 'none';
         this.soundMeter.stop();
 
-        mediaManager.stopCamera();
+        enableCameraSceneVisibilityStore.hideEnableCameraScene();
-        mediaManager.stopMicrophone();
+        this.localStreamStoreUnsubscriber();
+        //mediaManager.stopCamera();
+        //mediaManager.stopMicrophone();
 
-        this.scene.sleep(EnableCameraSceneName)
+        this.scene.sleep(EnableCameraSceneName);
         gameManager.goToStartingMap(this.scene);
     }
 
     private async getDevices() {
+        // TODO: switch this in a store.
         const mediaDeviceInfos = await navigator.mediaDevices.enumerateDevices();
+        this.microphonesList = [];
+        this.camerasList = [];
         for (const mediaDeviceInfo of mediaDeviceInfos) {
             if (mediaDeviceInfo.kind === 'audioinput') {
                 this.microphonesList.push(mediaDeviceInfo);

front/src/Phaser/Menu/HelpCameraSettingsScene.ts

@@ -2,6 +2,8 @@ import {mediaManager} from "../../WebRtc/MediaManager";
 import {HtmlUtils} from "../../WebRtc/HtmlUtils";
 import {localUserStore} from "../../Connexion/LocalUserStore";
 import {DirtyScene} from "../Game/DirtyScene";
+import {get} from "svelte/store";
+import {requestedCameraState, requestedMicrophoneState} from "../../Stores/MediaStore";
 
 export const HelpCameraSettingsSceneName = 'HelpCameraSettingsScene';
 const helpCameraSettings = 'helpCameraSettings';
@@ -41,7 +43,7 @@ export class HelpCameraSettingsScene extends DirtyScene {
             }
         });
 
-        if(!localUserStore.getHelpCameraSettingsShown() && (!mediaManager.constraintsMedia.audio || !mediaManager.constraintsMedia.video)){
+        if(!localUserStore.getHelpCameraSettingsShown() && (!get(requestedMicrophoneState) || !get(requestedCameraState))){
             this.openHelpCameraSettingsOpened();
             localUserStore.setHelpCameraSettingsShown();
         }

front/src/Phaser/Menu/MenuScene.ts

@@ -10,6 +10,7 @@ import {GameConnexionTypes} from "../../Url/UrlManager";
 import {WarningContainer, warningContainerHtml, warningContainerKey} from "../Components/WarningContainer";
 import {worldFullWarningStream} from "../../Connexion/WorldFullWarningStream";
 import {menuIconVisible} from "../../Stores/MenuStore";
+import {videoConstraintStore} from "../../Stores/MediaStore";
 
 export const MenuSceneName = 'MenuScene';
 const gameMenuKey = 'gameMenu';
@@ -324,7 +325,7 @@ export class MenuScene extends Phaser.Scene {
         if (valueVideo !== this.videoQualityValue) {
             this.videoQualityValue = valueVideo;
             localUserStore.setVideoQualityValue(valueVideo);
-            mediaManager.updateCameraQuality(valueVideo);
+            videoConstraintStore.setFrameRate(valueVideo);
         }
         this.closeGameQualityMenu();
     }

front/src/Phaser/Player/Player.ts

@@ -2,6 +2,7 @@ import {PlayerAnimationDirections} from "./Animation";
 import type {GameScene} from "../Game/GameScene";
 import {UserInputEvent, UserInputManager} from "../UserInput/UserInputManager";
 import {Character} from "../Entity/Character";
+import {userMovingStore} from "../../Stores/GameStore";
 import {RadialMenu, RadialMenuClickEvent, RadialMenuItem} from "../Components/RadialMenu";
 
 export const hasMovedEventName = "hasMoved";
@@ -86,6 +87,7 @@ export class Player extends Character {
             this.previousDirection = direction;
         }
         this.wasMoving = moving;
+        userMovingStore.set(moving);
     }
 
     public isMoving(): boolean {

front/src/Stores/GameStore.ts

@@ -0,0 +1,3 @@
+import { derived, writable, Writable } from "svelte/store";
+
+export const userMovingStore = writable(false);

front/src/Stores/MediaStore.ts

@@ -0,0 +1,510 @@
+import {derived, get, Readable, readable, writable, Writable} from "svelte/store";
+import {peerStore} from "./PeerStore";
+import {localUserStore} from "../Connexion/LocalUserStore";
+import {ITiledMapGroupLayer, ITiledMapObjectLayer, ITiledMapTileLayer} from "../Phaser/Map/ITiledMap";
+import {userMovingStore} from "./GameStore";
+import {HtmlUtils} from "../WebRtc/HtmlUtils";
+
+/**
+ * A store that contains the camera state requested by the user (on or off).
+ */
+function createRequestedCameraState() {
+    const { subscribe, set, update } = writable(true);
+
+    return {
+        subscribe,
+        enableWebcam: () => set(true),
+        disableWebcam: () => set(false),
+    };
+}
+
+/**
+ * A store that contains the microphone state requested by the user (on or off).
+ */
+function createRequestedMicrophoneState() {
+    const { subscribe, set, update } = writable(true);
+
+    return {
+        subscribe,
+        enableMicrophone: () => set(true),
+        disableMicrophone: () => set(false),
+    };
+}
+
+/**
+ * A store containing whether the current page is visible or not.
+ */
+export const visibilityStore = readable(document.visibilityState === 'visible', function start(set) {
+    const onVisibilityChange = () => {
+        set(document.visibilityState === 'visible');
+    };
+
+    document.addEventListener('visibilitychange', onVisibilityChange);
+
+    return function stop() {
+        document.removeEventListener('visibilitychange', onVisibilityChange);
+    };
+});
+
+/**
+ * A store that contains whether the game overlay is shown or not.
+ * Typically, the overlay is hidden when entering Jitsi meet.
+ */
+function createGameOverlayVisibilityStore() {
+    const { subscribe, set, update } = writable(false);
+
+    return {
+        subscribe,
+        showGameOverlay: () => set(true),
+        hideGameOverlay: () => set(false),
+    };
+}
+
+/**
+ * A store that contains whether the EnableCameraScene is shown or not.
+ */
+function createEnableCameraSceneVisibilityStore() {
+    const { subscribe, set, update } = writable(false);
+
+    return {
+        subscribe,
+        showEnableCameraScene: () => set(true),
+        hideEnableCameraScene: () => set(false),
+    };
+}
+
+export const requestedCameraState = createRequestedCameraState();
+export const requestedMicrophoneState = createRequestedMicrophoneState();
+export const gameOverlayVisibilityStore = createGameOverlayVisibilityStore();
+export const enableCameraSceneVisibilityStore = createEnableCameraSceneVisibilityStore();
+
+/**
+ * A store that contains "true" if the webcam should be stopped for privacy reasons - i.e. if the the user left the the page while not in a discussion.
+ */
+function createPrivacyShutdownStore() {
+    let privacyEnabled = false;
+
+    const { subscribe, set, update } = writable(privacyEnabled);
+
+    visibilityStore.subscribe((isVisible) => {
+        if (!isVisible && get(peerStore).size === 0) {
+            privacyEnabled = true;
+            set(true);
+        }
+        if (isVisible) {
+            privacyEnabled = false;
+            set(false);
+        }
+    });
+
+    peerStore.subscribe((peers) => {
+        if (peers.size === 0 && get(visibilityStore) === false) {
+            privacyEnabled = true;
+            set(true);
+        }
+    });
+
+
+    return {
+        subscribe,
+    };
+}
+
+export const privacyShutdownStore = createPrivacyShutdownStore();
+
+
+/**
+ * A store containing whether the webcam was enabled in the last 10 seconds
+ */
+const enabledWebCam10secondsAgoStore = readable(false, function start(set) {
+    let timeout: NodeJS.Timeout|null = null;
+
+    const unsubscribe = requestedCameraState.subscribe((enabled) => {
+        if (enabled === true) {
+            if (timeout) {
+                clearTimeout(timeout);
+            }
+            timeout = setTimeout(() => {
+                set(false);
+            }, 10000);
+            set(true);
+        } else {
+            set(false);
+        }
+    })
+
+    return function stop() {
+        unsubscribe();
+    };
+});
+
+/**
+ * A store containing whether the webcam was enabled in the last 5 seconds
+ */
+const userMoved5SecondsAgoStore = readable(false, function start(set) {
+    let timeout: NodeJS.Timeout|null = null;
+
+    const unsubscribe = userMovingStore.subscribe((moving) => {
+        if (moving === true) {
+            if (timeout) {
+                clearTimeout(timeout);
+            }
+            set(true);
+        } else {
+            timeout = setTimeout(() => {
+                set(false);
+            }, 5000);
+
+        }
+    })
+
+    return function stop() {
+        unsubscribe();
+    };
+});
+
+
+/**
+ * A store containing whether the mouse is getting close the bottom right corner.
+ */
+const mouseInBottomRight = readable(false, function start(set) {
+    let lastInBottomRight = false;
+    const gameDiv = HtmlUtils.getElementByIdOrFail<HTMLDivElement>('game');
+
+    const detectInBottomRight = (event: MouseEvent) => {
+        const rect = gameDiv.getBoundingClientRect();
+        const inBottomRight = event.x - rect.left > rect.width * 3 / 4 && event.y - rect.top > rect.height * 3 / 4;
+        if (inBottomRight !== lastInBottomRight) {
+            lastInBottomRight = inBottomRight;
+            set(inBottomRight);
+        }
+    };
+
+    document.addEventListener('mousemove', detectInBottomRight);
+
+    return function stop() {
+        document.removeEventListener('mousemove', detectInBottomRight);
+    }
+});
+
+/**
+ * A store that contains "true" if the webcam should be stopped for energy efficiency reason - i.e. we are not moving and not in a conversation.
+ */
+export const cameraEnergySavingStore = derived([userMoved5SecondsAgoStore, peerStore, enabledWebCam10secondsAgoStore, mouseInBottomRight], ([$userMoved5SecondsAgoStore,$peerStore, $enabledWebCam10secondsAgoStore, $mouseInBottomRight]) => {
+    return !$mouseInBottomRight && !$userMoved5SecondsAgoStore && $peerStore.size === 0 && !$enabledWebCam10secondsAgoStore;
+});
+
+/**
+ * A store that contains video constraints.
+ */
+function createVideoConstraintStore() {
+    const { subscribe, set, update } = writable({
+        width: { min: 640, ideal: 1280, max: 1920 },
+        height: { min: 400, ideal: 720 },
+        frameRate: { ideal: localUserStore.getVideoQualityValue() },
+        facingMode: "user",
+        resizeMode: 'crop-and-scale',
+        aspectRatio: 1.777777778
+    } as MediaTrackConstraints);
+
+    return {
+        subscribe,
+        setDeviceId: (deviceId: string) => update((constraints) => {
+            constraints.deviceId = {
+                exact: deviceId
+            };
+
+            return constraints;
+        }),
+        setFrameRate: (frameRate: number) => update((constraints) => {
+            constraints.frameRate = { ideal: frameRate };
+
+            return constraints;
+        })
+    };
+}
+
+export const videoConstraintStore = createVideoConstraintStore();
+
+/**
+ * A store that contains video constraints.
+ */
+function createAudioConstraintStore() {
+    const { subscribe, set, update } = writable({
+        //TODO: make these values configurable in the game settings menu and store them in localstorage
+        autoGainControl: false,
+        echoCancellation: true,
+        noiseSuppression: true
+    } as boolean|MediaTrackConstraints);
+
+    let selectedDeviceId = null;
+
+    return {
+        subscribe,
+        setDeviceId: (deviceId: string) => update((constraints) => {
+            selectedDeviceId = deviceId;
+
+            if (typeof(constraints) === 'boolean') {
+                constraints = {}
+            }
+            constraints.deviceId = {
+                exact: selectedDeviceId
+            };
+
+            return constraints;
+        })
+    };
+}
+
+export const audioConstraintStore = createAudioConstraintStore();
+
+
+let timeout: NodeJS.Timeout;
+
+let previousComputedVideoConstraint: boolean|MediaTrackConstraints = false;
+let previousComputedAudioConstraint: boolean|MediaTrackConstraints = false;
+
+/**
+ * A store containing the media constraints we want to apply.
+ */
+export const mediaStreamConstraintsStore = derived(
+    [
+        requestedCameraState,
+        requestedMicrophoneState,
+        gameOverlayVisibilityStore,
+        enableCameraSceneVisibilityStore,
+        videoConstraintStore,
+        audioConstraintStore,
+        privacyShutdownStore,
+        cameraEnergySavingStore,
+    ], (
+        [
+            $requestedCameraState,
+            $requestedMicrophoneState,
+            $gameOverlayVisibilityStore,
+            $enableCameraSceneVisibilityStore,
+            $videoConstraintStore,
+            $audioConstraintStore,
+            $privacyShutdownStore,
+            $cameraEnergySavingStore,
+        ], set
+    ) => {
+
+    let currentVideoConstraint: boolean|MediaTrackConstraints = $videoConstraintStore;
+    let currentAudioConstraint: boolean|MediaTrackConstraints = $audioConstraintStore;
+
+    if ($enableCameraSceneVisibilityStore) {
+        set({
+            video: currentVideoConstraint,
+            audio: currentAudioConstraint,
+        });
+        return;
+    }
+
+    // Disable webcam if the user requested so
+    if ($requestedCameraState === false) {
+        currentVideoConstraint = false;
+    }
+
+    // Disable microphone if the user requested so
+    if ($requestedMicrophoneState === false) {
+        currentAudioConstraint = false;
+    }
+
+    // Disable webcam and microphone when in a Jitsi
+    if ($gameOverlayVisibilityStore === false) {
+        currentVideoConstraint = false;
+        currentAudioConstraint = false;
+    }
+
+    // Disable webcam for privacy reasons (the game is not visible and we were talking to noone)
+    if ($privacyShutdownStore === true) {
+        currentVideoConstraint = false;
+    }
+
+    // Disable webcam for energy reasons (the user is not moving and we are talking to noone)
+    if ($cameraEnergySavingStore === true) {
+        currentVideoConstraint = false;
+        currentAudioConstraint = false;
+    }
+
+    // Let's make the changes only if the new value is different from the old one.
+    if (previousComputedVideoConstraint != currentVideoConstraint || previousComputedAudioConstraint != currentAudioConstraint) {
+        previousComputedVideoConstraint = currentVideoConstraint;
+        previousComputedAudioConstraint = currentAudioConstraint;
+        // Let's copy the objects.
+        if (typeof previousComputedVideoConstraint !== 'boolean') {
+            previousComputedVideoConstraint = {...previousComputedVideoConstraint};
+        }
+        if (typeof previousComputedAudioConstraint !== 'boolean') {
+            previousComputedAudioConstraint = {...previousComputedAudioConstraint};
+        }
+
+        if (timeout) {
+            clearTimeout(timeout);
+        }
+
+        // Let's wait a little bit to avoid sending too many constraint changes.
+        timeout = setTimeout(() => {
+            set({
+                video: currentVideoConstraint,
+                audio: currentAudioConstraint,
+            });
+        }, 100);
+    }
+}, {
+    video: false,
+    audio: false
+} as MediaStreamConstraints);
+
+export type LocalStreamStoreValue = StreamSuccessValue | StreamErrorValue;
+
+interface StreamSuccessValue {
+    type: "success",
+    stream: MediaStream|null,
+    // The constraints that we got (and not the one that have been requested)
+    constraints: MediaStreamConstraints
+}
+
+interface StreamErrorValue {
+    type: "error",
+    error: Error,
+    constraints: MediaStreamConstraints
+}
+
+let currentStream : MediaStream|null = null;
+
+/**
+ * Stops the camera from filming
+ */
+function stopCamera(): void {
+    if (currentStream) {
+        for (const track of currentStream.getVideoTracks()) {
+            track.stop();
+        }
+    }
+}
+
+/**
+ * Stops the microphone from listening
+ */
+function stopMicrophone(): void {
+    if (currentStream) {
+        for (const track of currentStream.getAudioTracks()) {
+            track.stop();
+        }
+    }
+}
+
+/**
+ * A store containing the MediaStream object (or null if nothing requested, or Error if an error occurred)
+ */
+export const localStreamStore = derived<Readable<MediaStreamConstraints>, LocalStreamStoreValue>(mediaStreamConstraintsStore, ($mediaStreamConstraintsStore, set) => {
+    const constraints = { ...$mediaStreamConstraintsStore };
+
+    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.');
+            set({
+                type: 'error',
+                error: new Error('Unable to access your camera or microphone. You need to use a HTTPS connection.'),
+                constraints
+            });
+        } else {
+            //throw new Error('Unable to access your camera or microphone. Your browser is too old.');
+            set({
+                type: 'error',
+                error: new Error('Unable to access your camera or microphone. Your browser is too old.'),
+                constraints
+            });
+        }
+    }
+
+    if (constraints.audio === false) {
+        stopMicrophone();
+    }
+    if (constraints.video === false) {
+        stopCamera();
+    }
+
+    if (constraints.audio === false && constraints.video === false) {
+        currentStream = null;
+        set({
+            type: 'success',
+            stream: null,
+            constraints
+        });
+        return;
+    }
+
+    (async () => {
+        try {
+            stopMicrophone();
+            stopCamera();
+            currentStream = await navigator.mediaDevices.getUserMedia(constraints);
+            set({
+                type: 'success',
+                stream: currentStream,
+                constraints
+            });
+            return;
+        } catch (e) {
+            if (constraints.video !== false) {
+                console.info("Error. Unable to get microphone and/or camera access. Trying audio only.", $mediaStreamConstraintsStore, e);
+                // TODO: does it make sense to pop this error when retrying?
+                set({
+                    type: 'error',
+                    error: e,
+                    constraints
+                });
+                // Let's try without video constraints
+                requestedCameraState.disableWebcam();
+            } else {
+                console.info("Error. Unable to get microphone and/or camera access.", $mediaStreamConstraintsStore, e);
+                set({
+                    type: 'error',
+                    error: e,
+                    constraints
+                });
+            }
+
+            /*constraints.video = false;
+            if (constraints.audio === false) {
+                console.info("Error. Unable to get microphone and/or camera access.", $mediaStreamConstraintsStore, e);
+                set({
+                    type: 'error',
+                    error: e,
+                    constraints
+                });
+                // Let's make as if the user did not ask.
+                requestedCameraState.disableWebcam();
+            } else {
+                console.info("Error. Unable to get microphone and/or camera access. Trying audio only.", $mediaStreamConstraintsStore, e);
+                try {
+                    currentStream = await navigator.mediaDevices.getUserMedia(constraints);
+                    set({
+                        type: 'success',
+                        stream: currentStream,
+                        constraints
+                    });
+                    return;
+                } catch (e2) {
+                    console.info("Error. Unable to get microphone fallback access.", $mediaStreamConstraintsStore, e2);
+                    set({
+                        type: 'error',
+                        error: e,
+                        constraints
+                    });
+                }
+            }*/
+        }
+    })();
+});
+
+/**
+ * A store containing the real active media constrained (not the one requested by the user, but the one we got from the system)
+ */
+export const obtainedMediaConstraintStore = derived(localStreamStore, ($localStreamStore) => {
+    return $localStreamStore.constraints;
+});
+

front/src/Stores/PeerStore.ts

@@ -0,0 +1,36 @@
+import { derived, writable, Writable } from "svelte/store";
+import type {UserSimplePeerInterface} from "../WebRtc/SimplePeer";
+import type {SimplePeer} from "../WebRtc/SimplePeer";
+
+/**
+ * A store that contains the camera state requested by the user (on or off).
+ */
+function createPeerStore() {
+    let users = new Map<number, UserSimplePeerInterface>();
+
+    const { subscribe, set, update } = writable(users);
+
+    return {
+        subscribe,
+        connectToSimplePeer: (simplePeer: SimplePeer) => {
+            users = new Map<number, UserSimplePeerInterface>();
+            set(users);
+            simplePeer.registerPeerConnectionListener({
+                onConnect(user: UserSimplePeerInterface) {
+                    update(users => {
+                        users.set(user.userId, user);
+                        return users;
+                    });
+                },
+                onDisconnect(userId: number) {
+                    update(users => {
+                        users.delete(userId);
+                        return users;
+                    });
+                }
+            })
+        }
+    };
+}
+
+export const peerStore = createPeerStore();

front/src/Stores/ScreenSharingStore.ts

@@ -0,0 +1,192 @@
+import {derived, get, Readable, readable, writable, Writable} from "svelte/store";
+import {peerStore} from "./PeerStore";
+import {localUserStore} from "../Connexion/LocalUserStore";
+import {ITiledMapGroupLayer, ITiledMapObjectLayer, ITiledMapTileLayer} from "../Phaser/Map/ITiledMap";
+import {userMovingStore} from "./GameStore";
+import {HtmlUtils} from "../WebRtc/HtmlUtils";
+import {
+    audioConstraintStore, cameraEnergySavingStore,
+    enableCameraSceneVisibilityStore,
+    gameOverlayVisibilityStore, LocalStreamStoreValue, privacyShutdownStore,
+    requestedCameraState,
+    requestedMicrophoneState, videoConstraintStore
+} from "./MediaStore";
+
+declare const navigator:any; // eslint-disable-line @typescript-eslint/no-explicit-any
+
+/**
+ * A store that contains the camera state requested by the user (on or off).
+ */
+function createRequestedScreenSharingState() {
+    const { subscribe, set, update } = writable(false);
+
+    return {
+        subscribe,
+        enableScreenSharing: () => set(true),
+        disableScreenSharing: () => set(false),
+    };
+}
+
+export const requestedScreenSharingState = createRequestedScreenSharingState();
+
+let currentStream : MediaStream|null = null;
+
+/**
+ * Stops the camera from filming
+ */
+function stopScreenSharing(): void {
+    if (currentStream) {
+        for (const track of currentStream.getVideoTracks()) {
+            track.stop();
+        }
+    }
+    currentStream = null;
+}
+
+let previousComputedVideoConstraint: boolean|MediaTrackConstraints = false;
+let previousComputedAudioConstraint: boolean|MediaTrackConstraints = false;
+
+/**
+ * A store containing the media constraints we want to apply.
+ */
+export const screenSharingConstraintsStore = derived(
+    [
+        requestedScreenSharingState,
+        gameOverlayVisibilityStore,
+        peerStore,
+    ], (
+        [
+            $requestedScreenSharingState,
+            $gameOverlayVisibilityStore,
+            $peerStore,
+        ], set
+    ) => {
+
+        let currentVideoConstraint: boolean|MediaTrackConstraints = true;
+        let currentAudioConstraint: boolean|MediaTrackConstraints = false;
+
+        // Disable screen sharing if the user requested so
+        if (!$requestedScreenSharingState) {
+            currentVideoConstraint = false;
+            currentAudioConstraint = false;
+        }
+
+        // Disable screen sharing when in a Jitsi
+        if (!$gameOverlayVisibilityStore) {
+            currentVideoConstraint = false;
+            currentAudioConstraint = false;
+        }
+
+        // Disable screen sharing if no peers
+        if ($peerStore.size === 0) {
+            currentVideoConstraint = false;
+            currentAudioConstraint = false;
+        }
+
+        // Let's make the changes only if the new value is different from the old one.
+        if (previousComputedVideoConstraint != currentVideoConstraint || previousComputedAudioConstraint != currentAudioConstraint) {
+            previousComputedVideoConstraint = currentVideoConstraint;
+            previousComputedAudioConstraint = currentAudioConstraint;
+            // Let's copy the objects.
+            /*if (typeof previousComputedVideoConstraint !== 'boolean') {
+                previousComputedVideoConstraint = {...previousComputedVideoConstraint};
+            }
+            if (typeof previousComputedAudioConstraint !== 'boolean') {
+                previousComputedAudioConstraint = {...previousComputedAudioConstraint};
+            }*/
+
+            set({
+                video: currentVideoConstraint,
+                audio: currentAudioConstraint,
+            });
+        }
+    }, {
+        video: false,
+        audio: false
+    } as MediaStreamConstraints);
+
+
+/**
+ * A store containing the MediaStream object for ScreenSharing (or null if nothing requested, or Error if an error occurred)
+ */
+export const screenSharingLocalStreamStore = derived<Readable<MediaStreamConstraints>, LocalStreamStoreValue>(screenSharingConstraintsStore, ($screenSharingConstraintsStore, set) => {
+    const constraints = $screenSharingConstraintsStore;
+
+    if ($screenSharingConstraintsStore.video === false && $screenSharingConstraintsStore.audio === false) {
+        stopScreenSharing();
+        requestedScreenSharingState.disableScreenSharing();
+        set({
+            type: 'success',
+            stream: null,
+            constraints
+        });
+        return;
+    }
+
+    let currentStreamPromise: Promise<MediaStream>;
+    if (navigator.getDisplayMedia) {
+        currentStreamPromise = navigator.getDisplayMedia({constraints});
+    } else if (navigator.mediaDevices.getDisplayMedia) {
+        currentStreamPromise = navigator.mediaDevices.getDisplayMedia({constraints});
+    } else {
+        stopScreenSharing();
+        set({
+            type: 'error',
+            error: new Error('Your browser does not support sharing screen'),
+            constraints
+        });
+        return;
+    }
+
+    (async () => {
+        try {
+            stopScreenSharing();
+            currentStream = await currentStreamPromise;
+
+            // If stream ends (for instance if user clicks the stop screen sharing button in the browser), let's close the view
+            for (const track of currentStream.getTracks()) {
+                track.onended = () => {
+                    stopScreenSharing();
+                    requestedScreenSharingState.disableScreenSharing();
+                    previousComputedVideoConstraint = false;
+                    previousComputedAudioConstraint = false;
+                    set({
+                        type: 'success',
+                        stream: null,
+                        constraints: {
+                            video: false,
+                            audio: false
+                        }
+                    });
+                };
+            }
+
+            set({
+                type: 'success',
+                stream: currentStream,
+                constraints
+            });
+            return;
+        } catch (e) {
+            currentStream = null;
+            console.info("Error. Unable to share screen.", e);
+            set({
+                type: 'error',
+                error: e,
+                constraints
+            });
+        }
+    })();
+});
+
+/**
+ * A store containing whether the screen sharing button should be displayed or hidden.
+ */
+export const screenSharingAvailableStore = derived(peerStore, ($peerStore, set) => {
+    if (!navigator.getDisplayMedia && !navigator.mediaDevices.getDisplayMedia) {
+        set(false);
+        return;
+    }
+
+    set($peerStore.size !== 0);
+});

front/src/WebRtc/JitsiFactory.ts

@@ -1,6 +1,8 @@
 import {JITSI_URL} from "../Enum/EnvironmentVariable";
 import {mediaManager} from "./MediaManager";
 import {coWebsiteManager} from "./CoWebsiteManager";
+import {requestedCameraState, requestedMicrophoneState} from "../Stores/MediaStore";
+import {get} from "svelte/store";
 declare const window:any; // eslint-disable-line @typescript-eslint/no-explicit-any
 
 interface jitsiConfigInterface {
@@ -10,10 +12,9 @@ interface jitsiConfigInterface {
 }
 
 const getDefaultConfig = () : jitsiConfigInterface => {
-    const constraints = mediaManager.getConstraintRequestedByUser();
     return {
-        startWithAudioMuted: !constraints.audio,
+        startWithAudioMuted: !get(requestedMicrophoneState),
-        startWithVideoMuted: constraints.video === false,
+        startWithVideoMuted: !get(requestedCameraState),
         prejoinPageEnabled: false
     }
 }
@@ -72,7 +73,6 @@ class JitsiFactory {
     private jitsiApi: any; // eslint-disable-line @typescript-eslint/no-explicit-any
     private audioCallback = this.onAudioChange.bind(this);
     private videoCallback = this.onVideoChange.bind(this);
-    private previousConfigMeet! : jitsiConfigInterface;
     private jitsiScriptLoaded: boolean = false;
 
     /**
@@ -83,9 +83,6 @@ class JitsiFactory {
     }
 
     public start(roomName: string, playerName:string, jwt?: string, config?: object, interfaceConfig?: object, jitsiUrl?: string): void {
-        //save previous config
-        this.previousConfigMeet = getDefaultConfig();
-
         coWebsiteManager.insertCoWebsite((async cowebsiteDiv => {
             // Jitsi meet external API maintains some data in local storage
             // which is sent via the appData URL parameter when joining a
@@ -134,27 +131,22 @@ class JitsiFactory {
         this.jitsiApi.removeListener('audioMuteStatusChanged', this.audioCallback);
         this.jitsiApi.removeListener('videoMuteStatusChanged', this.videoCallback);
         this.jitsiApi?.dispose();
-
-        //restore previous config
-        if(this.previousConfigMeet?.startWithAudioMuted){
-            await mediaManager.disableMicrophone();
-        }else{
-            await mediaManager.enableMicrophone();
-        }
-
-        if(this.previousConfigMeet?.startWithVideoMuted){
-            await mediaManager.disableCamera();
-        }else{
-            await mediaManager.enableCamera();
-        }
     }
 
     private onAudioChange({muted}: {muted: boolean}): void {
-        this.previousConfigMeet.startWithAudioMuted = muted;
+        if (muted) {
+            requestedMicrophoneState.disableMicrophone();
+        } else {
+            requestedMicrophoneState.enableMicrophone();
+        }
     }
 
     private onVideoChange({muted}: {muted: boolean}): void {
-        this.previousConfigMeet.startWithVideoMuted = muted;
+        if (muted) {
+            requestedCameraState.disableWebcam();
+        } else {
+            requestedCameraState.enableWebcam();
+        }
     }
 
     private async loadJitsiScript(domain: string): Promise<void> {

front/src/WebRtc/MediaManager.ts

@@ -6,10 +6,21 @@ import {localUserStore} from "../Connexion/LocalUserStore";
 import type {UserSimplePeerInterface} from "./SimplePeer";
 import {SoundMeter} from "../Phaser/Components/SoundMeter";
 import {DISABLE_NOTIFICATIONS} from "../Enum/EnvironmentVariable";
+import {
+    gameOverlayVisibilityStore, localStreamStore,
+    mediaStreamConstraintsStore,
+    requestedCameraState,
+    requestedMicrophoneState
+} from "../Stores/MediaStore";
+import {
+    requestedScreenSharingState,
+    screenSharingAvailableStore,
+    screenSharingLocalStreamStore
+} from "../Stores/ScreenSharingStore";
 
 declare const navigator:any; // eslint-disable-line @typescript-eslint/no-explicit-any
 
-let videoConstraint: boolean|MediaTrackConstraints = {
+const videoConstraint: boolean|MediaTrackConstraints = {
     width: { min: 640, ideal: 1280, max: 1920 },
     height: { min: 400, ideal: 720 },
     frameRate: { ideal: localUserStore.getVideoQualityValue() },
@@ -31,7 +42,6 @@ export type ReportCallback = (message: string) => void;
 export type ShowReportCallBack = (userId: string, userName: string|undefined) => void;
 export type HelpCameraSettingsCallBack = () => void;
 
-// TODO: Split MediaManager in 2 classes: MediaManagerUI (in charge of HTML) and MediaManager (singleton in charge of the camera only)
 export class MediaManager {
     localStream: MediaStream|null = null;
     localScreenCapture: MediaStream|null = null;
@@ -47,10 +57,6 @@ export class MediaManager {
     //FIX ME SOUNDMETER: check stalability of sound meter calculation
     //mySoundMeterElement: HTMLDivElement;
     private webrtcOutAudio: HTMLAudioElement;
-    constraintsMedia : MediaStreamConstraints = {
-        audio: audioConstraint,
-        video: videoConstraint
-    };
     updatedLocalStreamCallBacks : Set<UpdatedLocalStreamCallback> = new Set<UpdatedLocalStreamCallback>();
     startScreenSharingCallBacks : Set<StartScreenSharingCallback> = new Set<StartScreenSharingCallback>();
     stopScreenSharingCallBacks : Set<StopScreenSharingCallback> = new Set<StopScreenSharingCallback>();
@@ -61,11 +67,8 @@ export class MediaManager {
     private cinemaBtn: HTMLDivElement;
     private monitorBtn: HTMLDivElement;
 
-    private previousConstraint : MediaStreamConstraints;
     private focused : boolean = true;
 
-    private hasCamera = true;
-
     private triggerCloseJistiFrame : Map<String, Function> = new Map<String, Function>();
 
     private userInputManager?: UserInputManager;
@@ -88,14 +91,12 @@ export class MediaManager {
         this.microphoneClose.style.display = "none";
         this.microphoneClose.addEventListener('click', (e: MouseEvent) => {
             e.preventDefault();
-            this.enableMicrophone();
+            requestedMicrophoneState.enableMicrophone();
-            //update tracking
         });
         this.microphone = HtmlUtils.getElementByIdOrFail<HTMLImageElement>('microphone');
         this.microphone.addEventListener('click', (e: MouseEvent) => {
             e.preventDefault();
-            this.disableMicrophone();
+            requestedMicrophoneState.disableMicrophone();
-            //update tracking
         });
 
         this.cinemaBtn = HtmlUtils.getElementByIdOrFail<HTMLDivElement>('btn-video');
@@ -103,14 +104,12 @@ export class MediaManager {
         this.cinemaClose.style.display = "none";
         this.cinemaClose.addEventListener('click', (e: MouseEvent) => {
             e.preventDefault();
-            this.enableCamera();
+            requestedCameraState.enableWebcam();
-            //update tracking
         });
         this.cinema = HtmlUtils.getElementByIdOrFail<HTMLImageElement>('cinema');
         this.cinema.addEventListener('click', (e: MouseEvent) => {
             e.preventDefault();
-            this.disableCamera();
+            requestedCameraState.disableWebcam();
-            //update tracking
         });
 
         this.monitorBtn = HtmlUtils.getElementByIdOrFail<HTMLDivElement>('btn-monitor');
@@ -118,21 +117,20 @@ export class MediaManager {
         this.monitorClose.style.display = "block";
         this.monitorClose.addEventListener('click', (e: MouseEvent) => {
             e.preventDefault();
-            this.enableScreenSharing();
+            //this.enableScreenSharing();
-            //update tracking
+            requestedScreenSharingState.enableScreenSharing();
         });
         this.monitor = HtmlUtils.getElementByIdOrFail<HTMLImageElement>('monitor');
         this.monitor.style.display = "none";
         this.monitor.addEventListener('click', (e: MouseEvent) => {
             e.preventDefault();
-            this.disableScreenSharing();
+            //this.disableScreenSharing();
-            //update tracking
+            requestedScreenSharingState.disableScreenSharing();
         });
 
-        this.previousConstraint = JSON.parse(JSON.stringify(this.constraintsMedia));
         this.pingCameraStatus();
 
-        //FIX ME SOUNDMETER: check stalability of sound meter calculation
+        //FIX ME SOUNDMETER: check stability of sound meter calculation
         /*this.mySoundMeterElement = (HtmlUtils.getElementByIdOrFail('mySoundMeter'));
         this.mySoundMeterElement.childNodes.forEach((value: ChildNode, index) => {
             this.mySoundMeterElement.children.item(index)?.classList.remove('active');
@@ -140,37 +138,98 @@ export class MediaManager {
 
         //Check of ask notification navigator permission
         this.getNotification();
+
+        localStreamStore.subscribe((result) => {
+            if (result.type === 'error') {
+                console.error(result.error);
+                layoutManager.addInformation('warning', 'Camera access denied. Click here and check navigators permissions.', () => {
+                    this.showHelpCameraSettingsCallBack();
+                }, this.userInputManager);
+                return;
+            }
+
+            if (result.constraints.video !== false) {
+                HtmlUtils.getElementByIdOrFail('div-myCamVideo').classList.remove('hide');
+            } else {
+                HtmlUtils.getElementByIdOrFail('div-myCamVideo').classList.add('hide');
+            }/*
+            if (result.constraints.audio !== false) {
+                this.enableMicrophoneStyle();
+            } else {
+                this.disableMicrophoneStyle();
+            }*/
+
+            this.localStream = result.stream;
+            this.myCamVideo.srcObject = this.localStream;
+
+            // TODO: migrate all listeners to the store directly.
+            this.triggerUpdatedLocalStreamCallbacks(result.stream);
+        });
+
+        requestedCameraState.subscribe((enabled) => {
+            if (enabled) {
+                this.enableCameraStyle();
+            } else {
+                this.disableCameraStyle();
+            }
+        });
+        requestedMicrophoneState.subscribe((enabled) => {
+            if (enabled) {
+                this.enableMicrophoneStyle();
+            } else {
+                this.disableMicrophoneStyle();
+            }
+        });
+        //let screenSharingStream : MediaStream|null;
+        screenSharingLocalStreamStore.subscribe((result) => {
+            if (result.type === 'error') {
+                console.error(result.error);
+                layoutManager.addInformation('warning', 'Screen sharing denied. Click here and check navigators permissions.', () => {
+                    this.showHelpCameraSettingsCallBack();
+                }, this.userInputManager);
+                return;
+            }
+
+            if (result.stream !== null) {
+                this.enableScreenSharingStyle();
+                mediaManager.localScreenCapture = result.stream;
+
+                // TODO: migrate this out of MediaManager
+                this.triggerStartedScreenSharingCallbacks(result.stream);
+
+                //screenSharingStream = result.stream;
+
+                this.addScreenSharingActiveVideo('me', DivImportance.Normal);
+                HtmlUtils.getElementByIdOrFail<HTMLVideoElement>('screen-sharing-me').srcObject = result.stream;
+            } else {
+                this.disableScreenSharingStyle();
+                this.removeActiveScreenSharingVideo('me');
+
+                // FIXME: we need the old stream that is being stopped!
+                if (this.localScreenCapture) {
+                    this.triggerStoppedScreenSharingCallbacks(this.localScreenCapture);
+                    this.localScreenCapture = null;
+                }
+
+                //screenSharingStream = null;
+            }
+
+        });
+
+        screenSharingAvailableStore.subscribe((available) => {
+            if (available) {
+                document.querySelector('.btn-monitor')?.classList.remove('hide');
+            } else {
+                document.querySelector('.btn-monitor')?.classList.add('hide');
+            }
+        });
     }
 
     public updateScene(){
-        //FIX ME SOUNDMETER: check stalability of sound meter calculation
+        //FIX ME SOUNDMETER: check stability of sound meter calculation
         //this.updateSoudMeter();
     }
 
-    public blurCamera() {
-        if(!this.focused){
-            return;
-        }
-        this.focused = false;
-        this.previousConstraint = JSON.parse(JSON.stringify(this.constraintsMedia));
-        this.disableCamera();
-    }
-
-    /**
-     * Returns the constraint that the user wants (independently of the visibility / jitsi state...)
-     */
-    public getConstraintRequestedByUser(): MediaStreamConstraints {
-        return this.previousConstraint ?? this.constraintsMedia;
-    }
-
-    public focusCamera() {
-        if(this.focused){
-            return;
-        }
-        this.focused = true;
-        this.applyPreviousConfig();
-    }
-
     public onUpdateLocalStream(callback: UpdatedLocalStreamCallback): void {
         this.updatedLocalStreamCallBacks.add(callback);
     }
@@ -214,6 +273,8 @@ export class MediaManager {
             this.triggerCloseJitsiFrameButton();
         }
         buttonCloseFrame.removeEventListener('click', functionTrigger);
+
+        gameOverlayVisibilityStore.showGameOverlay();
     }
 
     public hideGameOverlay(): void {
@@ -225,110 +286,8 @@ export class MediaManager {
             this.triggerCloseJitsiFrameButton();
         }
         buttonCloseFrame.addEventListener('click', functionTrigger);
-    }
 
-    public isGameOverlayVisible(): boolean {
+        gameOverlayVisibilityStore.hideGameOverlay();
-        const gameOverlay = HtmlUtils.getElementByIdOrFail('game-overlay');
-        return gameOverlay.classList.contains('active');
-    }
-
-    public updateCameraQuality(value: number) {
-        this.enableCameraStyle();
-        const newVideoConstraint = JSON.parse(JSON.stringify(videoConstraint));
-        newVideoConstraint.frameRate = {exact: value, ideal: value};
-        videoConstraint = newVideoConstraint;
-        this.constraintsMedia.video = videoConstraint;
-        this.getCamera().then((stream: MediaStream) => {
-            this.triggerUpdatedLocalStreamCallbacks(stream);
-        });
-    }
-
-    public async enableCamera() {
-        this.constraintsMedia.video = videoConstraint;
-
-        try {
-            const stream = await this.getCamera()
-            //TODO show error message tooltip upper of camera button
-            //TODO message : please check camera permission of your navigator
-            if(stream.getVideoTracks().length === 0) {
-                throw new Error('Video track is empty, please check camera permission of your navigator')
-            }
-            this.enableCameraStyle();
-            this.triggerUpdatedLocalStreamCallbacks(stream);
-        } catch(err) {
-            console.error(err);
-            this.disableCameraStyle();
-            this.stopCamera();
-
-            layoutManager.addInformation('warning', 'Camera access denied. Click here and check navigators permissions.', () => {
-                this.showHelpCameraSettingsCallBack();
-            }, this.userInputManager);
-        }
-    }
-
-    public async disableCamera() {
-        this.disableCameraStyle();
-        this.stopCamera();
-
-        if (this.constraintsMedia.audio !== false) {
-            const stream = await this.getCamera();
-            this.triggerUpdatedLocalStreamCallbacks(stream);
-        } else {
-            this.triggerUpdatedLocalStreamCallbacks(null);
-        }
-    }
-
-    public async enableMicrophone() {
-        this.constraintsMedia.audio = audioConstraint;
-
-        try {
-            const stream = await this.getCamera();
-
-            //TODO show error message tooltip upper of camera button
-            //TODO message : please check microphone permission of your navigator
-            if (stream.getAudioTracks().length === 0) {
-                throw Error('Audio track is empty, please check microphone permission of your navigator')
-            }
-            this.enableMicrophoneStyle();
-            this.triggerUpdatedLocalStreamCallbacks(stream);
-        } catch(err) {
-            console.error(err);
-            this.disableMicrophoneStyle();
-
-            layoutManager.addInformation('warning', 'Microphone access denied. Click here and check navigators permissions.', () => {
-                this.showHelpCameraSettingsCallBack();
-            }, this.userInputManager);
-        }
-    }
-
-    public async disableMicrophone() {
-        this.disableMicrophoneStyle();
-        this.stopMicrophone();
-
-        if (this.constraintsMedia.video !== false) {
-            const stream = await this.getCamera();
-            this.triggerUpdatedLocalStreamCallbacks(stream);
-        } else {
-            this.triggerUpdatedLocalStreamCallbacks(null);
-        }
-    }
-
-    private applyPreviousConfig() {
-        this.constraintsMedia = this.previousConstraint;
-        if(!this.constraintsMedia.video){
-            this.disableCameraStyle();
-        }else{
-            this.enableCameraStyle();
-        }
-        if(!this.constraintsMedia.audio){
-            this.disableMicrophoneStyle()
-        }else{
-            this.enableMicrophoneStyle()
-        }
-
-        this.getCamera().then((stream: MediaStream) => {
-            this.triggerUpdatedLocalStreamCallbacks(stream);
-        });
     }
 
     private enableCameraStyle(){
@@ -341,8 +300,6 @@ export class MediaManager {
         this.cinemaClose.style.display = "block";
         this.cinema.style.display = "none";
         this.cinemaBtn.classList.add("disabled");
-        this.constraintsMedia.video = false;
-        this.myCamVideo.srcObject = null;
     }
 
     private enableMicrophoneStyle(){
@@ -355,185 +312,18 @@ export class MediaManager {
         this.microphoneClose.style.display = "block";
         this.microphone.style.display = "none";
         this.microphoneBtn.classList.add("disabled");
-        this.constraintsMedia.audio = false;
     }
 
-    private enableScreenSharing() {
+    private enableScreenSharingStyle(){
-        this.getScreenMedia().then((stream) => {
-            this.triggerStartedScreenSharingCallbacks(stream);
         this.monitorClose.style.display = "none";
         this.monitor.style.display = "block";
         this.monitorBtn.classList.add("enabled");
-        }, () => {
+    }
+
+    private disableScreenSharingStyle(){
         this.monitorClose.style.display = "block";
         this.monitor.style.display = "none";
         this.monitorBtn.classList.remove("enabled");
-
-            layoutManager.addInformation('warning', 'Screen sharing access denied. Click here and check navigators permissions.', () => {
-                this.showHelpCameraSettingsCallBack();
-            }, this.userInputManager);
-        });
-
-    }
-
-    private disableScreenSharing() {
-        this.monitorClose.style.display = "block";
-        this.monitor.style.display = "none";
-        this.monitorBtn.classList.remove("enabled");
-        this.removeActiveScreenSharingVideo('me');
-        this.localScreenCapture?.getTracks().forEach((track: MediaStreamTrack) => {
-            track.stop();
-        });
-        if (this.localScreenCapture === null) {
-            console.warn('Weird: trying to remove a screen sharing that is not enabled');
-            return;
-        }
-        const localScreenCapture = this.localScreenCapture;
-        this.getCamera().then((stream) => {
-            this.triggerStoppedScreenSharingCallbacks(localScreenCapture);
-        }).catch((err) => { //catch error get camera
-            console.error(err);
-            this.triggerStoppedScreenSharingCallbacks(localScreenCapture);
-        });
-        this.localScreenCapture = null;
-    }
-
-    //get screen
-    getScreenMedia() : Promise<MediaStream>{
-        try {
-            return this._startScreenCapture()
-                .then((stream: MediaStream) => {
-                    this.localScreenCapture = stream;
-
-                    // If stream ends (for instance if user clicks the stop screen sharing button in the browser), let's close the view
-                    for (const track of stream.getTracks()) {
-                        track.onended = () => {
-                            this.disableScreenSharing();
-                        };
-                    }
-
-                    this.addScreenSharingActiveVideo('me', DivImportance.Normal);
-                    HtmlUtils.getElementByIdOrFail<HTMLVideoElement>('screen-sharing-me').srcObject = stream;
-
-                    return stream;
-                })
-                .catch((err: unknown) => {
-                    console.error("Error => getScreenMedia => ", err);
-                    throw err;
-                });
-        }catch (err) {
-            return new Promise((resolve, reject) => { // eslint-disable-line no-unused-vars
-                reject(err);
-            });
-        }
-    }
-
-    private _startScreenCapture() {
-        if (navigator.getDisplayMedia) {
-            return navigator.getDisplayMedia({video: true});
-        } else if (navigator.mediaDevices.getDisplayMedia) {
-            return navigator.mediaDevices.getDisplayMedia({video: true});
-        } else {
-            return new Promise((resolve, reject) => { // eslint-disable-line no-unused-vars
-                reject("error sharing screen");
-            });
-        }
-    }
-
-    //get camera
-    async getCamera(): Promise<MediaStream> {
-        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.');
-            }
-        }
-
-        return this.getLocalStream().catch((err) => {
-            console.info('Error get camera, trying with video option at null =>', err);
-            this.disableCameraStyle();
-            this.stopCamera();
-
-            return this.getLocalStream().then((stream : MediaStream) => {
-                this.hasCamera = false;
-                return stream;
-            }).catch((err) => {
-                this.disableMicrophoneStyle();
-                console.info("error get media ", this.constraintsMedia.video, this.constraintsMedia.audio, err);
-                throw err;
-            });
-        });
-
-        //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*/
-    }
-
-    private getLocalStream() : Promise<MediaStream> {
-        return navigator.mediaDevices.getUserMedia(this.constraintsMedia).then((stream : MediaStream) => {
-            this.localStream = stream;
-            this.myCamVideo.srcObject = this.localStream;
-
-            //FIX ME SOUNDMETER: check stalability of sound meter calculation
-            /*this.mySoundMeter = null;
-            if(this.constraintsMedia.audio){
-                this.mySoundMeter = new SoundMeter();
-                this.mySoundMeter.connectToSource(stream, new AudioContext());
-            }*/
-            return stream;
-        }).catch((err: Error) => {
-            throw err;
-        });
-    }
-
-    /**
-     * Stops the camera from filming
-     */
-    public stopCamera(): void {
-        if (this.localStream) {
-            for (const track of this.localStream.getVideoTracks()) {
-                track.stop();
-            }
-        }
-    }
-
-    /**
-     * Stops the microphone from listening
-     */
-    public stopMicrophone(): void {
-        if (this.localStream) {
-            for (const track of this.localStream.getAudioTracks()) {
-                track.stop();
-            }
-        }
-        //this.mySoundMeter?.stop();
-    }
-
-    setCamera(id: string): Promise<MediaStream> {
-        let video = this.constraintsMedia.video;
-        if (typeof(video) === 'boolean' || video === undefined) {
-            video = {}
-        }
-        video.deviceId = {
-            exact: id
-        };
-
-        return this.getCamera();
-    }
-
-    setMicrophone(id: string): Promise<MediaStream> {
-        let audio = this.constraintsMedia.audio;
-        if (typeof(audio) === 'boolean' || audio === undefined) {
-            audio = {}
-        }
-        audio.deviceId = {
-            exact: id
-        };
-
-        return this.getCamera();
     }
 
     addActiveVideo(user: UserSimplePeerInterface, userName: string = ""){

front/src/WebRtc/SimplePeer.ts

@@ -14,6 +14,8 @@ import type {RoomConnection} from "../Connexion/RoomConnection";
 import {connectionManager} from "../Connexion/ConnectionManager";
 import {GameConnexionTypes} from "../Url/UrlManager";
 import {blackListManager} from "./BlackListManager";
+import {get} from "svelte/store";
+import {localStreamStore, obtainedMediaConstraintStore} from "../Stores/MediaStore";
 
 export interface UserSimplePeerInterface{
     userId: number;
@@ -82,12 +84,11 @@ export class SimplePeer {
         });
 
         mediaManager.showGameOverlay();
-        mediaManager.getCamera().finally(() => {
+
         //receive message start
         this.Connection.receiveWebrtcStart((message: UserSimplePeerInterface) => {
             this.receiveWebrtcStart(message);
         });
-        });
 
         this.Connection.disconnectMessage((data: WebRtcDisconnectMessageInterface): void => {
             this.closeConnection(data.userId);
@@ -344,8 +345,15 @@ export class SimplePeer {
             if (!PeerConnection) {
                 throw new Error('While adding media, cannot find user with ID ' + userId);
             }
-            const localStream: MediaStream | null = mediaManager.localStream;
+
-            PeerConnection.write(new Buffer(JSON.stringify({type: MESSAGE_TYPE_CONSTRAINT, ...mediaManager.constraintsMedia})));
+            const result = get(localStreamStore);
+
+            PeerConnection.write(new Buffer(JSON.stringify({type: MESSAGE_TYPE_CONSTRAINT, ...result.constraints})));
+
+            if (result.type === 'error') {
+                return;
+            }
+            const localStream: MediaStream | null = result.stream;
 
             if(!localStream){
                 return;

front/src/WebRtc/VideoPeer.ts

@@ -5,6 +5,8 @@ import type {RoomConnection} from "../Connexion/RoomConnection";
 import {blackListManager} from "./BlackListManager";
 import type {Subscription} from "rxjs";
 import type {UserSimplePeerInterface} from "./SimplePeer";
+import {get} from "svelte/store";
+import {obtainedMediaConstraintStore} from "../Stores/MediaStore";
 
 const Peer: SimplePeerNamespace.SimplePeer = require('simple-peer');
 
@@ -191,7 +193,7 @@ export class VideoPeer extends Peer {
     private pushVideoToRemoteUser() {
         try {
             const localStream: MediaStream | null = mediaManager.localStream;
-            this.write(new Buffer(JSON.stringify({type: MESSAGE_TYPE_CONSTRAINT, ...mediaManager.constraintsMedia})));
+            this.write(new Buffer(JSON.stringify({type: MESSAGE_TYPE_CONSTRAINT, ...get(obtainedMediaConstraintStore)})));
 
             if(!localStream){
                 return;

front/style/style.css

@@ -143,6 +143,11 @@ body .message-info.warning{
     bottom: 30px;
     border-radius: 15px 15px 15px 15px;
     max-height: 20%;
+    transition: right 350ms;
+}
+
+#div-myCamVideo.hide {
+    right: -20vw;
 }
 
 video#myCamVideo{
@@ -196,12 +201,12 @@ video#myCamVideo{
     display: inline-flex;
     bottom: 10px;
     right: 15px;
-    width: 15vw;
+    width: 180px;
     height: 40px;
     text-align: center;
     align-content: center;
     align-items: center;
-    justify-content: center;
+    justify-content: flex-end;
     justify-items: center;
 }
 /*btn animation*/
@@ -216,7 +221,6 @@ video#myCamVideo{
     border-radius: 48px;
     transform: translateY(20px);
     transition-timing-function: ease-in-out;
-    margin-bottom: 20px;
     margin: 0 4%;
 }
 .btn-cam-action div.disabled {
@@ -248,6 +252,12 @@ video#myCamVideo{
     transition: all .2s;
     /*right: 224px;*/
 }
+.btn-monitor.hide {
+    transform: translateY(60px);
+}
+.btn-cam-action:hover .btn-monitor.hide{
+    transform: translateY(60px);
+}
 .btn-copy{
     pointer-events: auto;
     transition: all .3s;
@@ -346,6 +356,8 @@ video#myCamVideo{
 #myCamVideoSetup {
     width: 100%;
     height: 100%;
+    -webkit-transform: scaleX(-1);
+    transform: scaleX(-1);
 }
 .webrtcsetup.active{
     display: block;