Pause non-live broadcast from other room (#9825)

src/stores/RoomViewStore.tsx

@@ -57,6 +57,7 @@ import {
 } from "../voice-broadcast";
 import { IRoomStateEventsActionPayload } from "../actions/MatrixActionCreators";
 import { showCantStartACallDialog } from "../voice-broadcast/utils/showCantStartACallDialog";
+import { pauseNonLiveBroadcastFromOtherRoom } from "../voice-broadcast/utils/pauseNonLiveBroadcastFromOtherRoom";
 
 const NUM_JOIN_RETRY = 5;
 
@@ -445,6 +446,7 @@ export class RoomViewStore extends EventEmitter {
             }
 
             if (room) {
+                pauseNonLiveBroadcastFromOtherRoom(room, this.stores.voiceBroadcastPlaybacksStore);
                 this.doMaybeSetCurrentVoiceBroadcastPlayback(room);
             }
         } else if (payload.room_alias) {

src/voice-broadcast/stores/VoiceBroadcastPlaybacksStore.ts

@@ -37,7 +37,7 @@ export class VoiceBroadcastPlaybacksStore
     extends TypedEventEmitter<VoiceBroadcastPlaybacksStoreEvent, EventMap>
     implements IDestroyable
 {
-    private current: VoiceBroadcastPlayback | null;
+    private current: VoiceBroadcastPlayback | null = null;
 
     /** Playbacks indexed by their info event id. */
     private playbacks = new Map<string, VoiceBroadcastPlayback>();

src/voice-broadcast/utils/pauseNonLiveBroadcastFromOtherRoom.ts

@@ -0,0 +1,37 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { Room } from "matrix-js-sdk/src/matrix";
+
+import { VoiceBroadcastPlaybacksStore } from "..";
+
+export const pauseNonLiveBroadcastFromOtherRoom = (
+    room: Room,
+    voiceBroadcastPlaybacksStore: VoiceBroadcastPlaybacksStore,
+): void => {
+    const playingBroadcast = voiceBroadcastPlaybacksStore.getCurrent();
+
+    if (
+        !playingBroadcast ||
+        playingBroadcast?.getLiveness() === "live" ||
+        playingBroadcast?.infoEvent.getRoomId() === room.roomId
+    ) {
+        return;
+    }
+
+    voiceBroadcastPlaybacksStore.clearCurrent();
+    playingBroadcast.pause();
+};