664 lines
26 KiB
TypeScript
664 lines
26 KiB
TypeScript
/*
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Copyright 2015, 2016 OpenMarket Ltd
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Copyright 2017, 2018 New Vector Ltd
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Copyright 2019, 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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* Manages a list of all the currently active calls.
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*
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* This handler dispatches when voip calls are added/updated/removed from this list:
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* {
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* action: 'call_state'
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* room_id: <room ID of the call>
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* }
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*
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* To know the state of the call, this handler exposes a getter to
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* obtain the call for a room:
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* var call = CallHandler.getCall(roomId)
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* var state = call.call_state; // ringing|ringback|connected|ended|busy|stop_ringback|stop_ringing
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*
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* This handler listens for and handles the following actions:
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* {
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* action: 'place_call',
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* type: 'voice|video',
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* room_id: <room that the place call button was pressed in>
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* }
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*
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* {
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* action: 'incoming_call'
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* call: MatrixCall
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* }
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*
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* {
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* action: 'hangup'
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* room_id: <room that the hangup button was pressed in>
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* }
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*
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* {
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* action: 'answer'
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* room_id: <room that the answer button was pressed in>
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* }
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*/
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import React from 'react';
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import {MatrixClientPeg} from './MatrixClientPeg';
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import PlatformPeg from './PlatformPeg';
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import Modal from './Modal';
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import { _t } from './languageHandler';
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import { createNewMatrixCall } from 'matrix-js-sdk/src/webrtc/call';
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import dis from './dispatcher/dispatcher';
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import WidgetUtils from './utils/WidgetUtils';
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import WidgetEchoStore from './stores/WidgetEchoStore';
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import SettingsStore from './settings/SettingsStore';
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import {generateHumanReadableId} from "./utils/NamingUtils";
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import {Jitsi} from "./widgets/Jitsi";
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import {WidgetType} from "./widgets/WidgetType";
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import {SettingLevel} from "./settings/SettingLevel";
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import { ActionPayload } from "./dispatcher/payloads";
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import {base32} from "rfc4648";
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import QuestionDialog from "./components/views/dialogs/QuestionDialog";
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import ErrorDialog from "./components/views/dialogs/ErrorDialog";
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import WidgetStore from "./stores/WidgetStore";
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import { WidgetMessagingStore } from "./stores/widgets/WidgetMessagingStore";
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import { ElementWidgetActions } from "./stores/widgets/ElementWidgetActions";
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import { MatrixCall, CallErrorCode, CallState, CallEvent, CallParty, CallType } from "matrix-js-sdk/src/webrtc/call";
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import Analytics from './Analytics';
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import CountlyAnalytics from "./CountlyAnalytics";
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import {UIFeature} from "./settings/UIFeature";
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import { CallError } from "matrix-js-sdk/src/webrtc/call";
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enum AudioID {
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Ring = 'ringAudio',
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Ringback = 'ringbackAudio',
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CallEnd = 'callendAudio',
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Busy = 'busyAudio',
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}
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// Unlike 'CallType' in js-sdk, this one includes screen sharing
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// (because a screen sharing call is only a screen sharing call to the caller,
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// to the callee it's just a video call, at least as far as the current impl
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// is concerned).
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export enum PlaceCallType {
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Voice = 'voice',
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Video = 'video',
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ScreenSharing = 'screensharing',
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}
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function getRemoteAudioElement(): HTMLAudioElement {
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// this needs to be somewhere at the top of the DOM which
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// always exists to avoid audio interruptions.
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// Might as well just use DOM.
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const remoteAudioElement = document.getElementById("remoteAudio") as HTMLAudioElement;
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if (!remoteAudioElement) {
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console.error(
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"Failed to find remoteAudio element - cannot play audio!" +
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"You need to add an <audio/> to the DOM.",
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);
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return null;
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}
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return remoteAudioElement;
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}
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export default class CallHandler {
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private calls = new Map<string, MatrixCall>();
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private audioPromises = new Map<AudioID, Promise<void>>();
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static sharedInstance() {
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if (!window.mxCallHandler) {
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window.mxCallHandler = new CallHandler()
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}
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return window.mxCallHandler;
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}
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start() {
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dis.register(this.onAction);
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// add empty handlers for media actions, otherwise the media keys
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// end up causing the audio elements with our ring/ringback etc
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// audio clips in to play.
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if (navigator.mediaSession) {
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navigator.mediaSession.setActionHandler('play', function() {});
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navigator.mediaSession.setActionHandler('pause', function() {});
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navigator.mediaSession.setActionHandler('seekbackward', function() {});
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navigator.mediaSession.setActionHandler('seekforward', function() {});
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navigator.mediaSession.setActionHandler('previoustrack', function() {});
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navigator.mediaSession.setActionHandler('nexttrack', function() {});
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}
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if (SettingsStore.getValue(UIFeature.Voip)) {
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MatrixClientPeg.get().on('Call.incoming', this.onCallIncoming);
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}
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}
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stop() {
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const cli = MatrixClientPeg.get();
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if (cli) {
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cli.removeListener('Call.incoming', this.onCallIncoming);
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}
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}
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private onCallIncoming = (call) => {
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// we dispatch this synchronously to make sure that the event
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// handlers on the call are set up immediately (so that if
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// we get an immediate hangup, we don't get a stuck call)
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dis.dispatch({
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action: 'incoming_call',
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call: call,
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}, true);
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}
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getCallForRoom(roomId: string): MatrixCall {
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return this.calls.get(roomId) || null;
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}
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getAnyActiveCall() {
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for (const call of this.calls.values()) {
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if (call.state !== CallState.Ended) {
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return call;
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}
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}
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return null;
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}
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play(audioId: AudioID) {
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// TODO: Attach an invisible element for this instead
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// which listens?
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const audio = document.getElementById(audioId) as HTMLMediaElement;
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if (audio) {
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const playAudio = async () => {
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try {
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// This still causes the chrome debugger to break on promise rejection if
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// the promise is rejected, even though we're catching the exception.
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await audio.play();
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} catch (e) {
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// This is usually because the user hasn't interacted with the document,
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// or chrome doesn't think so and is denying the request. Not sure what
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// we can really do here...
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// https://github.com/vector-im/element-web/issues/7657
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console.log("Unable to play audio clip", e);
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}
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};
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if (this.audioPromises.has(audioId)) {
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this.audioPromises.set(audioId, this.audioPromises.get(audioId).then(() => {
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audio.load();
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return playAudio();
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}));
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} else {
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this.audioPromises.set(audioId, playAudio());
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}
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}
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}
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pause(audioId: AudioID) {
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// TODO: Attach an invisible element for this instead
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// which listens?
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const audio = document.getElementById(audioId) as HTMLMediaElement;
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if (audio) {
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if (this.audioPromises.has(audioId)) {
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this.audioPromises.set(audioId, this.audioPromises.get(audioId).then(() => audio.pause()));
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} else {
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// pause doesn't return a promise, so just do it
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audio.pause();
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}
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}
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}
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private matchesCallForThisRoom(call: MatrixCall) {
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// We don't allow placing more than one call per room, but that doesn't mean there
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// can't be more than one, eg. in a glare situation. This checks that the given call
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// is the call we consider 'the' call for its room.
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const callForThisRoom = this.getCallForRoom(call.roomId);
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return callForThisRoom && call.callId === callForThisRoom.callId;
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}
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private setCallListeners(call: MatrixCall) {
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call.on(CallEvent.Error, (err: CallError) => {
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if (!this.matchesCallForThisRoom(call)) return;
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Analytics.trackEvent('voip', 'callError', 'error', err.toString());
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console.error("Call error:", err);
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if (err.code === CallErrorCode.NoUserMedia) {
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this.showMediaCaptureError(call);
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return;
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}
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if (
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MatrixClientPeg.get().getTurnServers().length === 0 &&
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SettingsStore.getValue("fallbackICEServerAllowed") === null
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) {
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this.showICEFallbackPrompt();
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return;
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}
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Modal.createTrackedDialog('Call Failed', '', ErrorDialog, {
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title: _t('Call Failed'),
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description: err.message,
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});
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});
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call.on(CallEvent.Hangup, () => {
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if (!this.matchesCallForThisRoom(call)) return;
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Analytics.trackEvent('voip', 'callHangup');
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this.removeCallForRoom(call.roomId);
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});
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call.on(CallEvent.State, (newState: CallState, oldState: CallState) => {
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if (!this.matchesCallForThisRoom(call)) return;
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this.setCallState(call, newState);
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switch (oldState) {
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case CallState.Ringing:
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this.pause(AudioID.Ring);
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break;
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case CallState.InviteSent:
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this.pause(AudioID.Ringback);
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break;
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}
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switch (newState) {
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case CallState.Ringing:
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this.play(AudioID.Ring);
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break;
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case CallState.InviteSent:
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this.play(AudioID.Ringback);
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break;
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case CallState.Ended:
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Analytics.trackEvent('voip', 'callEnded', 'hangupReason', call.hangupReason);
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this.removeCallForRoom(call.roomId);
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if (oldState === CallState.InviteSent && (
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call.hangupParty === CallParty.Remote ||
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(call.hangupParty === CallParty.Local && call.hangupReason === CallErrorCode.InviteTimeout)
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)) {
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this.play(AudioID.Busy);
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let title;
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let description;
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if (call.hangupReason === CallErrorCode.UserHangup) {
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title = _t("Call Declined");
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description = _t("The other party declined the call.");
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} else if (call.hangupReason === CallErrorCode.InviteTimeout) {
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title = _t("Call Failed");
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// XXX: full stop appended as some relic here, but these
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// strings need proper input from design anyway, so let's
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// not change this string until we have a proper one.
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description = _t('The remote side failed to pick up') + '.';
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} else {
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title = _t("Call Failed");
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description = _t("The call could not be established");
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}
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Modal.createTrackedDialog('Call Handler', 'Call Failed', ErrorDialog, {
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title, description,
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});
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} else if (call.hangupReason === CallErrorCode.AnsweredElsewhere) {
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this.play(AudioID.Busy);
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Modal.createTrackedDialog('Call Handler', 'Call Failed', ErrorDialog, {
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title: _t("Answered Elsewhere"),
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description: _t("The call was answered on another device."),
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});
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} else {
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this.play(AudioID.CallEnd);
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}
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}
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});
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call.on(CallEvent.Replaced, (newCall: MatrixCall) => {
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if (!this.matchesCallForThisRoom(call)) return;
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console.log(`Call ID ${call.callId} is being replaced by call ID ${newCall.callId}`);
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if (call.state === CallState.Ringing) {
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this.pause(AudioID.Ring);
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} else if (call.state === CallState.InviteSent) {
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this.pause(AudioID.Ringback);
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}
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this.calls.set(newCall.roomId, newCall);
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this.setCallListeners(newCall);
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this.setCallState(newCall, newCall.state);
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});
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}
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private setCallAudioElement(call: MatrixCall) {
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const audioElement = getRemoteAudioElement();
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if (audioElement) call.setRemoteAudioElement(audioElement);
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}
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private setCallState(call: MatrixCall, status: CallState) {
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console.log(
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`Call state in ${call.roomId} changed to ${status}`,
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);
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dis.dispatch({
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action: 'call_state',
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room_id: call.roomId,
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state: status,
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});
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}
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private removeCallForRoom(roomId: string) {
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this.calls.delete(roomId);
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}
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private showICEFallbackPrompt() {
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const cli = MatrixClientPeg.get();
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const code = sub => <code>{sub}</code>;
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Modal.createTrackedDialog('No TURN servers', '', QuestionDialog, {
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title: _t("Call failed due to misconfigured server"),
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description: <div>
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<p>{_t(
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"Please ask the administrator of your homeserver " +
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"(<code>%(homeserverDomain)s</code>) to configure a TURN server in " +
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"order for calls to work reliably.",
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{ homeserverDomain: cli.getDomain() }, { code },
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)}</p>
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<p>{_t(
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"Alternatively, you can try to use the public server at " +
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"<code>turn.matrix.org</code>, but this will not be as reliable, and " +
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"it will share your IP address with that server. You can also manage " +
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"this in Settings.",
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null, { code },
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)}</p>
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</div>,
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button: _t('Try using turn.matrix.org'),
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cancelButton: _t('OK'),
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onFinished: (allow) => {
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SettingsStore.setValue("fallbackICEServerAllowed", null, SettingLevel.DEVICE, allow);
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cli.setFallbackICEServerAllowed(allow);
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},
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}, null, true);
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}
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private showMediaCaptureError(call: MatrixCall) {
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let title;
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let description;
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if (call.type === CallType.Voice) {
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title = _t("Unable to access microphone");
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description = <div>
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{_t(
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"Call failed because no microphone could not be accessed. " +
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"Check that a microphone is plugged in and set up correctly.",
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)}
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</div>;
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} else if (call.type === CallType.Video) {
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title = _t("Unable to access webcam / microphone");
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description = <div>
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{_t("Call failed because no webcam or microphone could not be accessed. Check that:")}
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<ul>
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<li>{_t("A microphone and webcam are plugged in and set up correctly")}</li>
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<li>{_t("Permission is granted to use the webcam")}</li>
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<li>{_t("No other application is using the webcam")}</li>
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</ul>
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</div>;
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}
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Modal.createTrackedDialog('Media capture failed', '', ErrorDialog, {
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title, description,
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}, null, true);
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}
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private placeCall(
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roomId: string, type: PlaceCallType,
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localElement: HTMLVideoElement, remoteElement: HTMLVideoElement,
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) {
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Analytics.trackEvent('voip', 'placeCall', 'type', type);
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CountlyAnalytics.instance.trackStartCall(roomId, type === PlaceCallType.Video, false);
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const call = createNewMatrixCall(MatrixClientPeg.get(), roomId);
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this.calls.set(roomId, call);
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this.setCallListeners(call);
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this.setCallAudioElement(call);
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if (type === PlaceCallType.Voice) {
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call.placeVoiceCall();
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} else if (type === 'video') {
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call.placeVideoCall(
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remoteElement,
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localElement,
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);
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} else if (type === PlaceCallType.ScreenSharing) {
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const screenCapErrorString = PlatformPeg.get().screenCaptureErrorString();
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if (screenCapErrorString) {
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this.removeCallForRoom(roomId);
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console.log("Can't capture screen: " + screenCapErrorString);
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Modal.createTrackedDialog('Call Handler', 'Unable to capture screen', ErrorDialog, {
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title: _t('Unable to capture screen'),
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description: screenCapErrorString,
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});
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return;
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}
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call.placeScreenSharingCall(remoteElement, localElement);
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} else {
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console.error("Unknown conf call type: %s", type);
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}
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}
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private onAction = (payload: ActionPayload) => {
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switch (payload.action) {
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case 'place_call':
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{
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if (this.getAnyActiveCall()) {
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Modal.createTrackedDialog('Call Handler', 'Existing Call', ErrorDialog, {
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title: _t('Existing Call'),
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description: _t('You are already in a call.'),
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});
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return; // don't allow >1 call to be placed.
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}
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// if the runtime env doesn't do VoIP, whine.
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if (!MatrixClientPeg.get().supportsVoip()) {
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Modal.createTrackedDialog('Call Handler', 'VoIP is unsupported', ErrorDialog, {
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title: _t('VoIP is unsupported'),
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description: _t('You cannot place VoIP calls in this browser.'),
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});
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return;
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}
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const room = MatrixClientPeg.get().getRoom(payload.room_id);
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if (!room) {
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console.error("Room %s does not exist.", payload.room_id);
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return;
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}
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const members = room.getJoinedMembers();
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if (members.length <= 1) {
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Modal.createTrackedDialog('Call Handler', 'Cannot place call with self', ErrorDialog, {
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description: _t('You cannot place a call with yourself.'),
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});
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return;
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} else if (members.length === 2) {
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console.info("Place %s call in %s", payload.type, payload.room_id);
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this.placeCall(payload.room_id, payload.type, payload.local_element, payload.remote_element);
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} else { // > 2
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dis.dispatch({
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action: "place_conference_call",
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room_id: payload.room_id,
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type: payload.type,
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remote_element: payload.remote_element,
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local_element: payload.local_element,
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});
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}
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}
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break;
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case 'place_conference_call':
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console.info("Place conference call in %s", payload.room_id);
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Analytics.trackEvent('voip', 'placeConferenceCall');
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CountlyAnalytics.instance.trackStartCall(payload.room_id, payload.type === PlaceCallType.Video, true);
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this.startCallApp(payload.room_id, payload.type);
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break;
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case 'end_conference':
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console.info("Terminating conference call in %s", payload.room_id);
|
|
this.terminateCallApp(payload.room_id);
|
|
break;
|
|
case 'hangup_conference':
|
|
console.info("Leaving conference call in %s", payload.room_id);
|
|
this.hangupCallApp(payload.room_id);
|
|
break;
|
|
case 'incoming_call':
|
|
{
|
|
if (this.getAnyActiveCall()) {
|
|
// ignore multiple incoming calls. in future, we may want a line-1/line-2 setup.
|
|
// we avoid rejecting with "busy" in case the user wants to answer it on a different device.
|
|
// in future we could signal a "local busy" as a warning to the caller.
|
|
// see https://github.com/vector-im/vector-web/issues/1964
|
|
return;
|
|
}
|
|
|
|
// if the runtime env doesn't do VoIP, stop here.
|
|
if (!MatrixClientPeg.get().supportsVoip()) {
|
|
return;
|
|
}
|
|
|
|
const call = payload.call as MatrixCall;
|
|
Analytics.trackEvent('voip', 'receiveCall', 'type', call.type);
|
|
this.calls.set(call.roomId, call)
|
|
this.setCallListeners(call);
|
|
this.setCallAudioElement(call);
|
|
}
|
|
break;
|
|
case 'hangup':
|
|
case 'reject':
|
|
if (!this.calls.get(payload.room_id)) {
|
|
return; // no call to hangup
|
|
}
|
|
if (payload.action === 'reject') {
|
|
this.calls.get(payload.room_id).reject();
|
|
} else {
|
|
this.calls.get(payload.room_id).hangup(CallErrorCode.UserHangup, false);
|
|
}
|
|
this.removeCallForRoom(payload.room_id);
|
|
break;
|
|
case 'answer': {
|
|
if (!this.calls.has(payload.room_id)) {
|
|
return; // no call to answer
|
|
}
|
|
const call = this.calls.get(payload.room_id);
|
|
call.answer();
|
|
CountlyAnalytics.instance.trackJoinCall(payload.room_id, call.type === CallType.Video, false);
|
|
dis.dispatch({
|
|
action: "view_room",
|
|
room_id: payload.room_id,
|
|
});
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
private async startCallApp(roomId: string, type: string) {
|
|
dis.dispatch({
|
|
action: 'appsDrawer',
|
|
show: true,
|
|
});
|
|
|
|
// prevent double clicking the call button
|
|
const room = MatrixClientPeg.get().getRoom(roomId);
|
|
const currentJitsiWidgets = WidgetUtils.getRoomWidgetsOfType(room, WidgetType.JITSI);
|
|
const hasJitsi = currentJitsiWidgets.length > 0
|
|
|| WidgetEchoStore.roomHasPendingWidgetsOfType(roomId, currentJitsiWidgets, WidgetType.JITSI);
|
|
if (hasJitsi) {
|
|
Modal.createTrackedDialog('Call already in progress', '', ErrorDialog, {
|
|
title: _t('Call in Progress'),
|
|
description: _t('A call is currently being placed!'),
|
|
});
|
|
return;
|
|
}
|
|
|
|
const jitsiDomain = Jitsi.getInstance().preferredDomain;
|
|
const jitsiAuth = await Jitsi.getInstance().getJitsiAuth();
|
|
let confId;
|
|
if (jitsiAuth === 'openidtoken-jwt') {
|
|
// Create conference ID from room ID
|
|
// For compatibility with Jitsi, use base32 without padding.
|
|
// More details here:
|
|
// https://github.com/matrix-org/prosody-mod-auth-matrix-user-verification
|
|
confId = base32.stringify(Buffer.from(roomId), { pad: false });
|
|
} else {
|
|
// Create a random human readable conference ID
|
|
confId = `JitsiConference${generateHumanReadableId()}`;
|
|
}
|
|
|
|
let widgetUrl = WidgetUtils.getLocalJitsiWrapperUrl({auth: jitsiAuth});
|
|
|
|
// TODO: Remove URL hacks when the mobile clients eventually support v2 widgets
|
|
const parsedUrl = new URL(widgetUrl);
|
|
parsedUrl.search = ''; // set to empty string to make the URL class use searchParams instead
|
|
parsedUrl.searchParams.set('confId', confId);
|
|
widgetUrl = parsedUrl.toString();
|
|
|
|
const widgetData = {
|
|
conferenceId: confId,
|
|
isAudioOnly: type === 'voice',
|
|
domain: jitsiDomain,
|
|
auth: jitsiAuth,
|
|
};
|
|
|
|
const widgetId = (
|
|
'jitsi_' +
|
|
MatrixClientPeg.get().credentials.userId +
|
|
'_' +
|
|
Date.now()
|
|
);
|
|
|
|
WidgetUtils.setRoomWidget(roomId, widgetId, WidgetType.JITSI, widgetUrl, 'Jitsi', widgetData).then(() => {
|
|
console.log('Jitsi widget added');
|
|
}).catch((e) => {
|
|
if (e.errcode === 'M_FORBIDDEN') {
|
|
Modal.createTrackedDialog('Call Failed', '', ErrorDialog, {
|
|
title: _t('Permission Required'),
|
|
description: _t("You do not have permission to start a conference call in this room"),
|
|
});
|
|
}
|
|
console.error(e);
|
|
});
|
|
}
|
|
|
|
private terminateCallApp(roomId: string) {
|
|
Modal.createTrackedDialog('Confirm Jitsi Terminate', '', QuestionDialog, {
|
|
hasCancelButton: true,
|
|
title: _t("End conference"),
|
|
description: _t("This will end the conference for everyone. Continue?"),
|
|
button: _t("End conference"),
|
|
onFinished: (proceed) => {
|
|
if (!proceed) return;
|
|
|
|
// We'll just obliterate them all. There should only ever be one, but might as well
|
|
// be safe.
|
|
const roomInfo = WidgetStore.instance.getRoom(roomId);
|
|
const jitsiWidgets = roomInfo.widgets.filter(w => WidgetType.JITSI.matches(w.type));
|
|
jitsiWidgets.forEach(w => {
|
|
// setting invalid content removes it
|
|
WidgetUtils.setRoomWidget(roomId, w.id);
|
|
});
|
|
},
|
|
});
|
|
}
|
|
|
|
private hangupCallApp(roomId: string) {
|
|
const roomInfo = WidgetStore.instance.getRoom(roomId);
|
|
if (!roomInfo) return; // "should never happen" clauses go here
|
|
|
|
const jitsiWidgets = roomInfo.widgets.filter(w => WidgetType.JITSI.matches(w.type));
|
|
jitsiWidgets.forEach(w => {
|
|
const messaging = WidgetMessagingStore.instance.getMessagingForId(w.id);
|
|
if (!messaging) return; // more "should never happen" words
|
|
|
|
messaging.transport.send(ElementWidgetActions.HangupCall, {});
|
|
});
|
|
}
|
|
}
|