Never skip lobby for huddles (#3508) (#3509)

* Never skip lobby for huddles



---------

Signed-off-by: Timo K <toger5@hotmail.de>

.eslintrc.cjs

@@ -28,8 +28,6 @@ module.exports = {
   rules: {
     "matrix-org/require-copyright-header": ["error", COPYRIGHT_HEADER],
     "jsx-a11y/media-has-caption": "off",
-    // We should use the js-sdk logger, never console directly.
-    "no-console": ["error"],
     "react/display-name": "error",
     // Encourage proper usage of Promises:
     "@typescript-eslint/no-floating-promises": "error",
@@ -46,6 +44,15 @@ module.exports = {
     "rxjs/no-exposed-subjects": "error",
     "rxjs/finnish": ["error", { names: { "^this$": false } }],
   },
+  overrides: [
+    {
+      files: ["src/*/**"],
+      rules: {
+        // In application code we should use the js-sdk logger, never console directly.
+        "no-console": ["error"],
+      },
+    },
+  ],
   settings: {
     react: {
       version: "detect",

.github/workflows/changelog-label.yml

@@ -9,6 +9,6 @@ jobs:
     steps:
       - uses: yogevbd/enforce-label-action@a3c219da6b8fa73f6ba62b68ff09c469b3a1c024 # 2.2.2
         with:
-          REQUIRED_LABELS_ANY: "PR-Bug-Fix,PR-Documentation,PR-Task,PR-Feature,PR-Improvement,PR-Developer-Experience,dependencies"
+          REQUIRED_LABELS_ANY: "PR-Bug-Fix,PR-Documentation,PR-Task,PR-Feature,PR-Improvement,PR-Developer-Experience,dependencies,PR-Breaking-Change"
           REQUIRED_LABELS_ANY_DESCRIPTION: "Select at least one 'PR-' label"
           BANNED_LABELS: "banned"

.github/workflows/publish-embedded-packages.yaml

@@ -44,6 +44,8 @@ jobs:
         run: |
           if [[ "${VERSION}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
             echo "TAG=latest" >> "$GITHUB_OUTPUT"
+          elif [[ "${VERSION}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+\-rc\.[0-9]+$ ]]; then
+            echo "TAG=rc" >> "$GITHUB_OUTPUT"
           else
             echo "TAG=other" >> "$GITHUB_OUTPUT"
           fi
@@ -163,6 +165,8 @@ jobs:
         run: |
           if [[ "${{ needs.versioning.outputs.TAG }}" == "latest" ]]; then
             echo "ARTIFACT_VERSION=${{ needs.versioning.outputs.UNPREFIXED_VERSION }}" >> "$GITHUB_ENV"
+          elif [[ "${{ needs.versioning.outputs.TAG }}" == "rc" ]]; then
+            echo "ARTIFACT_VERSION=${{ needs.versioning.outputs.UNPREFIXED_VERSION }}" >> "$GITHUB_ENV"
           else
             echo "ARTIFACT_VERSION=${{ needs.versioning.outputs.UNPREFIXED_VERSION }}-SNAPSHOT" >> "$GITHUB_ENV"
           fi

.gitignore

@@ -9,6 +9,7 @@ dist-ssr
 public/config.json
 backend/synapse_tmp/*
 /coverage
+config.json
 
 # Yarn
 yarn-error.log

README.md

@@ -143,7 +143,8 @@ via the `org.matrix.msc4143.rtc_foci` key, e.g.:
 where the format for MatrixRTC using LiveKit backend is defined in
 [MSC4195](https://github.com/hughns/matrix-spec-proposals/blob/hughns/matrixrtc-livekit/proposals/4195-matrixrtc-livekit.md).
 In the example above Matrix clients do discover a focus of type `livekit` which
-points them to a Matrix LiveKit JWT Auth Service via `livekit_service_url`.
+points them to a [MatrixRTC Authorization Service](https://github.com/element-hq/lk-jwt-service)
+via `livekit_service_url`.
 
 ### Backend Selection
 
@@ -154,9 +155,9 @@ points them to a Matrix LiveKit JWT Auth Service via `livekit_service_url`.
   the **first participant who joined the call** defines via the `foci_preferred`
   key in their `org.matrix.msc3401.call.member` which actual MatrixRTC backend
   will be used for this call.
-- During the actual call join flow, the **LiveKit JWT Auth Service** provides
-  the client with the **LiveKit SFU WebSocket URL** and an **access JWT token**
-  in order to exchange media via WebRTC.
+- During the actual call join flow, the **[MatrixRTC Authorization Service](https://github.com/element-hq/lk-jwt-service)**
+  provides the client with the **LiveKit SFU WebSocket URL** and an
+  **access JWT token** in order to exchange media via WebRTC.
 
 The example below illustrates how backend selection works across **Matrix
 federation**, using the setup from sites A, B, and C. It demonstrates backend
@@ -208,7 +209,7 @@ A docker compose file `dev-backend-docker-compose.yml` is provided to start the
 whole stack of components which is required for a local development environment:
 
 - Minimum Synapse Setup (servername: `synapse.m.localhost`)
-- LiveKit Authorization Service (Note requires Federation API and hence a TLS reverse proxy)
+- MatrixRTC Authorization Service (Note requires Federation API and hence a TLS reverse proxy)
 - Minimum LiveKit SFU Setup using dev defaults for config
 - Redis db for completeness
 - Minimum `localhost` Certificate Authority (CA) for Transport Layer Security (TLS)

backend/dev_livekit.yaml

@@ -21,3 +21,5 @@ turn:
   external_tls: true
 keys:
   devkey: secret
+room:
+  auto_create: false

backend/dev_nginx.conf

@@ -59,6 +59,8 @@ server {
     ssl_certificate         /root/ssl/cert.pem;
     ssl_certificate_key     /root/ssl/key.pem;
 
+    http2 on;
+
 
     location ^~ /livekit/jwt/ {
 

backend/playwright_homeserver.yaml

@@ -44,6 +44,10 @@ rc_message:
   per_second: 10000
   burst_count: 10000
 
+rc_delayed_event_mgmt:
+  per_second: 10000
+  burst_count: 10000
+
 rc_login:
   address:
     per_second: 10000

dev-backend-docker-compose.yml

@@ -14,6 +14,7 @@ services:
       # If the configured homeserver runs on localhost, it'll probably be using
       # a self-signed certificate
       - LIVEKIT_INSECURE_SKIP_VERIFY_TLS=YES_I_KNOW_WHAT_I_AM_DOING
+      - LIVEKIT_FULL_ACCESS_HOMESERVERS=*
     deploy:
       restart_policy:
         condition: on-failure
@@ -25,6 +26,7 @@ services:
 
   livekit:
     image: livekit/livekit-server:latest
+    pull_policy: always
     hostname: livekit-sfu
     command: --dev --config /etc/livekit.yaml
     restart: unless-stopped
@@ -44,6 +46,7 @@ services:
 
   redis:
     image: redis:6-alpine
+    pull_policy: always
     command: redis-server /etc/redis.conf
     ports:
       # HOST_PORT:CONTAINER_PORT
@@ -56,6 +59,7 @@ services:
   synapse:
     hostname: homeserver
     image: docker.io/matrixdotorg/synapse:latest
+    pull_policy: always
     environment:
       - SYNAPSE_CONFIG_PATH=/data/cfg/homeserver.yaml
       # Needed for rootless podman-compose such that the uid/gid mapping does
@@ -86,6 +90,7 @@ services:
     #  see backend/dev_tls_setup for how to generate the tls certs
     hostname: synapse.m.localhost
     image: nginx:latest
+    pull_policy: always
     volumes:
       - ./backend/dev_nginx.conf:/etc/nginx/conf.d/default.conf:Z
       - ./backend/dev_tls_m.localhost.key:/root/ssl/key.pem:Z
@@ -101,4 +106,6 @@ services:
     depends_on:
       - synapse
     networks:
-      - ecbackend
+      ecbackend:
+        aliases:
+          - matrix-rtc.m.localhost

docs/self-hosting.md

@@ -64,7 +64,7 @@ rc_delayed_event_mgmt:
 ```
 
 As a prerequisite for the
-[Matrix LiveKit JWT auth service](https://github.com/element-hq/lk-jwt-service)
+[MatrixRTC Authorization Service](https://github.com/element-hq/lk-jwt-service)
 make sure that your Synapse server has either a `federation` or `openid`
 [listener configured](https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#listeners).
 
@@ -77,7 +77,7 @@ required for each site deployment.
 
 As depicted above in the `example.com` site deployment, Element Call requires a
 [Livekit SFU](https://github.com/livekit/livekit) alongside a
-[Matrix Livekit JWT auth service](https://github.com/element-hq/lk-jwt-service)
+[MatrixRTC Authorization Service](https://github.com/element-hq/lk-jwt-service)
 to implement
 [MSC4195: MatrixRTC using LiveKit backend](https://github.com/hughns/matrix-spec-proposals/blob/hughns/matrixrtc-livekit/proposals/4195-matrixrtc-livekit.md).
 
@@ -89,7 +89,7 @@ the example above, this results in:
 | Service | Endpoint | Example |
 | -------- | ------- | ------- |
 | [Livekit SFU](https://github.com/livekit/livekit) WebSocket signalling connection | `/livekit/sfu` | `matrix-rtc.example.com/livekit/sfu` |
-| [Matrix Livekit JWT auth service](https://github.com/element-hq/lk-jwt-service) | `/livekit/jwt` | `matrix-rtc.example.com/livekit/jwt` |
+| [MatrixRTC Authorization Service](https://github.com/element-hq/lk-jwt-service) | `/livekit/jwt` | `matrix-rtc.example.com/livekit/jwt` |
 
 Using Nginx, you can achieve this by:
 
@@ -102,7 +102,7 @@ server {
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       proxy_set_header X-Forwarded-Proto $scheme;
 
-      # JWT Service running at port 8080
+      # MatrixRTC Authorization Service running at port 8080
       proxy_pass http://localhost:8080/;
     }
 
@@ -126,6 +126,32 @@ server {
 }
 ```
 
+Or Using Caddy, you can achieve this by:
+
+```caddy configuration file
+# Route for lk-jwt-service with livekit/jwt prefix
+@jwt_service path /livekit/jwt/sfu/get /livekit/jwt/healthz
+handle @jwt_service {
+  uri strip_prefix /livekit/jwt
+  reverse_proxy http://[::1]:8080 {
+    header_up Host {host}
+    header_up X-Forwarded-Server {host}
+    header_up X-Real-IP {remote_addr}
+    header_up X-Forwarded-For {remote_addr}
+  }
+}
+
+# Default route for livekit
+handle {
+  reverse_proxy http://localhost:7880 {
+    header_up Host {host}
+    header_up X-Forwarded-Server {host}
+    header_up X-Real-IP {remote_addr}
+    header_up X-Forwarded-For {remote_addr}
+  }
+}
+```
+
 #### MatrixRTC backend announcement
 
 > [!IMPORTANT]
@@ -145,10 +171,6 @@ server {
     {
         "type": "livekit",
         "livekit_service_url": "https://matrix-rtc-2.example.com/livekit/jwt"
-    },
-    {
-        "type": "nextgen_new_foci_type",
-        "props_for_nextgen_foci": "val"
     }
 ]
 ```
@@ -218,7 +240,7 @@ server {
 There are currently two different config files. `.env` holds variables that are
 used at build time, while `public/config.json` holds variables that are used at
 runtime. Documentation and default values for `public/config.json` can be found
-in [ConfigOptions.ts](src/config/ConfigOptions.ts).
+in [ConfigOptions.ts](../src/config/ConfigOptions.ts).
 
 > [!CAUTION]
 > Please note configuring MatrixRTC backend via `config.json` of

docs/url-params.md

@@ -48,6 +48,7 @@ These parameters are relevant to both [widget](./embedded-standalone.md) and [st
 
 | Name                                                    | Values                                                                                               | Required for widget                                                                               | Required for SPA             | Description                                                                                                                                                                                                                                                                                                                                                                                         |
 | ------------------------------------------------------- | ---------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- | ---------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `intent`                                                | `start_call`, `join_existing`, `start_call_dm`, `join_existing_dm.                                   | No, defaults to `start_call`                                                                      | No, defaults to `start_call` | The intent is a special url parameter that defines the defaults for all the other parameters. In most cases it should be enough to only set the intent to setup element-call.                                                                                                                                                                                                                       |
 | `allowIceFallback`                                      | `true` or `false`                                                                                    | No, defaults to `false`                                                                           | No, defaults to `false`      | Allows use of fallback STUN servers for ICE if the user's homeserver doesn’t provide any.                                                                                                                                                                                                                                                                                                           |
 | `analyticsID` (deprecated: use `posthogUserId` instead) | Posthog analytics ID                                                                                 | No                                                                                                | No                           | Available only with user's consent for sharing telemetry in Element Web.                                                                                                                                                                                                                                                                                                                            |
 | `appPrompt`                                             | `true` or `false`                                                                                    | No, defaults to `true`                                                                            | No, defaults to `true`       | Prompts the user to launch the native mobile app upon entering a room, applicable only on Android and iOS, and must be enabled in config.                                                                                                                                                                                                                                                           |
@@ -59,7 +60,6 @@ These parameters are relevant to both [widget](./embedded-standalone.md) and [st
 | `header`                                                | `none`, `standard` or `app_bar`                                                                      | No, defaults to `standard`                                                                        | No, defaults to `standard`   | The style of headers to show. `standard` is the default arrangement, `none` hides the header entirely, and `app_bar` produces a header with a back button like you might see in mobile apps. The callback for the back button is `window.controls.onBackButtonPressed`.                                                                                                                             |
 | `hideScreensharing`                                     | `true` or `false`                                                                                    | No, defaults to `false`                                                                           | No, defaults to `false`      | Hides the screen-sharing button.                                                                                                                                                                                                                                                                                                                                                                    |
 | `homeserver`                                            |                                                                                                      | Not applicable                                                                                    | No                           | Homeserver for registering a new (guest) user, configures non-default guest user server when creating a spa link.                                                                                                                                                                                                                                                                                   |
-| `intent`                                                | `start_call` or `join_existing`                                                                      | No, defaults to `start_call`                                                                      | No, defaults to `start_call` | The intent of the user with respect to the call. e.g. if they clicked a Start Call button, this would be `start_call`. If it was a Join Call button, it would be `join_existing`.                                                                                                                                                                                                                   |
 | `lang`                                                  | [BCP 47](https://www.rfc-editor.org/info/bcp47) code                                                 | No                                                                                                | No                           | The language the app should use.                                                                                                                                                                                                                                                                                                                                                                    |
 | `password`                                              |                                                                                                      | No                                                                                                | No                           | E2EE password when using a shared secret. (For individual sender keys in embedded mode this is not required.)                                                                                                                                                                                                                                                                                       |
 | `perParticipantE2EE`                                    | `true` or `false`                                                                                    | No, defaults to `false`                                                                           | No, defaults to `false`      | Enables per participant encryption with Keys exchanged over encrypted matrix room messages.                                                                                                                                                                                                                                                                                                         |
@@ -69,6 +69,9 @@ These parameters are relevant to both [widget](./embedded-standalone.md) and [st
 | `skipLobby` (deprecated: use `intent` instead)          | `true` or `false`                                                                                    | No. If `intent` is explicitly `start_call` then defaults to `true`. Otherwise defaults to `false` | No, defaults to `false`      | Skips the lobby to join a call directly, can be combined with preload in widget. When `true` the audio and video inputs will be muted by default. (This means there currently is no way to start without muted video if one wants to skip the lobby. Also not in widget mode.)                                                                                                                      |
 | `theme`                                                 | One of: `light`, `dark`, `light-high-contrast`, `dark-high-contrast`                                 | No, defaults to `dark`                                                                            | No, defaults to `dark`       | UI theme to use.                                                                                                                                                                                                                                                                                                                                                                                    |
 | `viaServers`                                            | Comma separated list of [Matrix Server Names](https://spec.matrix.org/v1.12/appendices/#server-name) | Not applicable                                                                                    | No                           | Homeserver for joining a room, non-empty value required for rooms not on the user’s default homeserver.                                                                                                                                                                                                                                                                                             |
+| `sendNotificationType`                                  | `ring` or `notification`                                                                             | No                                                                                                | No                           | Will send a "ring" or "notification" `m.rtc.notification` event if the user is the first one in the call.                                                                                                                                                                                                                                                                                           |
+| `autoLeaveWhenOthersLeft`                               | `true` or `false`                                                                                    | No, defaults to `false`                                                                           | No, defaults to `false`      | Whether the app should automatically leave the call when there is no one left in the call.                                                                                                                                                                                                                                                                                                          |
+| `waitForCallPickup`                                     | `true` or `false`                                                                                    | No, defaults to `false`                                                                           | No, defaults to `false`      | When sending a notification, show UI that the app is awaiting an answer, play a dial tone, and (in widget mode) auto-close the widget once the notification expires.                                                                                                                                                                                                                                |
 
 ### Widget-only parameters
 

embedded/android/gradle/libs.versions.toml

@@ -2,11 +2,11 @@
 # https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format
 
 [versions]
-android_gradle_plugin = "8.11.0"
+android_gradle_plugin = "8.11.1"
 
 [libraries]
 android_gradle_plugin = { module = "com.android.tools.build:gradle", version.ref = "android_gradle_plugin" }
 
 [plugins]
 android_library = { id = "com.android.library", version.ref = "android_gradle_plugin" }
-maven_publish = { id = "com.vanniktech.maven.publish", version = "0.33.0" }
+maven_publish = { id = "com.vanniktech.maven.publish", version = "0.34.0" }

embedded/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

embedded/android/lib/build.gradle.kts

@@ -5,8 +5,6 @@
  * Please see LICENSE files in the repository root for full details.
  */
 
-import com.vanniktech.maven.publish.SonatypeHost
-
 plugins {
     alias(libs.plugins.android.library)
     alias(libs.plugins.maven.publish)
@@ -27,7 +25,7 @@ android {
 }
 
 mavenPublishing {
-    publishToMavenCentral(SonatypeHost.CENTRAL_PORTAL, automaticRelease = true)
+    publishToMavenCentral(automaticRelease = true)
 
     signAllPublications()
 

i18next-parser.config.ts

@@ -1,4 +1,6 @@
-export default {
+import type { UserConfig } from "i18next-parser";
+
+const config: UserConfig = {
   keySeparator: ".",
   namespaceSeparator: false,
   contextSeparator: "|",
@@ -26,3 +28,5 @@ export default {
   input: ["src/**/*.{ts,tsx}"],
   sort: true,
 };
+
+export default config;

knip.ts

@@ -1,8 +1,15 @@
-import { KnipConfig } from "knip";
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { type KnipConfig } from "knip";
 
 export default {
   vite: {
-    config: ["vite.config.js", "vite-embedded.config.js"],
+    config: ["vite.config.ts", "vite-embedded.config.ts"],
   },
   entry: ["src/main.tsx", "i18next-parser.config.ts"],
   ignoreBinaries: [

locales/cs/app.json

@@ -61,6 +61,7 @@
     "video": "Video"
   },
   "developer_mode": {
+    "always_show_iphone_earpiece": "Zobrazit možnost sluchátek pro iPhone na všech platformách",
     "crypto_version": "Kryptografická verze: {{version}}",
     "debug_tile_layout_label": "Ladění rozložení dlaždic",
     "device_id": "ID zařízení: {{id}}",
@@ -81,7 +82,7 @@
   "error": {
     "call_is_not_supported": "Volání není podporováno",
     "call_not_found": "Volání nebylo nalezeno",
-    "call_not_found_description": "<0>Zdá se, že tento odkaz nepatří k žádnému existujícímu volání. Zkontrolujte, zda máte správný odkaz, nebo <1>vytvořte nový</1>.</0>",
+    "call_not_found_description": "<0>Zdá se, že tento odkaz nepatří k žádnému existujícímu hovoru. Zkontrolujte, zda máte správný odkaz, nebo<2> vytvořte nový</2>.</0>",
     "connection_lost": "Spojení ztraceno",
     "connection_lost_description": "Hovor byl přerušen.",
     "e2ee_unsupported": "Nekompatibilní prohlížeč",
@@ -104,6 +105,11 @@
     "knock_reject_heading": "Přístup odepřen",
     "reason": "Důvod"
   },
+  "handset": {
+    "overlay_back_button": "Zpět do režimu reproduktoru",
+    "overlay_description": "Funguje pouze při používání aplikace",
+    "overlay_title": "Režim sluchátka"
+  },
   "hangup_button_label": "Ukončit hovor",
   "header_label": "Domov Element Call",
   "header_participants_label": "Účastníci",
@@ -173,8 +179,11 @@
     "devices": {
       "camera": "Fotoaparát",
       "camera_numbered": "Fotoaparát {{n}}",
+      "change_device_button": "Změnit zvukové zařízení",
       "default": "Výchozí",
       "default_named": "Výchozí <2> ({{name}}) </2>",
+      "handset": "Sluchátko",
+      "loudspeaker": "Reproduktor",
       "microphone": "Mikrofon",
       "microphone_numbered": "Mikrofon {{n}}",
       "speaker": "Reproduktor",

locales/da/app.json

@@ -61,6 +61,7 @@
     "video": "Video"
   },
   "developer_mode": {
+    "always_show_iphone_earpiece": "Vis mulighed for iPhone-høretelefon på alle platforme",
     "crypto_version": "Krypto-version: {{version}}",
     "debug_tile_layout_label": "Fejlfinding af fliselayout",
     "device_id": "Enheds-id: {{id}}",
@@ -70,6 +71,7 @@
     "livekit_server_info": "LiveKit Serverinfo",
     "livekit_sfu": "LiveKit SFU: {{url}}",
     "matrix_id": "Matrix ID: {{id}}",
+    "mute_all_audio": "Slå al lyd fra (deltagere, reaktioner, deltagelseslyde)",
     "show_connection_stats": "Vis forbindelsesstatistik",
     "show_non_member_tiles": "Vis fliser for medier fra ikke-medlemmer",
     "url_params": "URL-parametre",
@@ -80,7 +82,7 @@
   "error": {
     "call_is_not_supported": "Opkald er ikke understøttet",
     "call_not_found": "Opkald ikke fundet",
-    "call_not_found_description": "<0>Det link ser ikke ud til at høre til et eksisterende opkald. Tjek at du har det rigtige link, eller<1> opret et nyt</1>.</0>",
+    "call_not_found_description": "<0>Det link ser ikke ud til at høre til et eksisterende opkald. Tjek at du har det rigtige link, eller <2> opret et nyt</2>.</0>",
     "connection_lost": "Forbindelsen gik tabt",
     "connection_lost_description": "Du blev afbrudt fra opkaldet.",
     "e2ee_unsupported": "Inkompatibel browser",
@@ -92,6 +94,8 @@
     "matrix_rtc_focus_missing": "Serveren er ikke konfigureret til at arbejde med {{brand}}{{domain}}. Kontakt venligst din serveradministrator (domæne:{{domain}}, fejlkode: {{ errorCode }}).",
     "open_elsewhere": "Åbnet i en anden fane",
     "open_elsewhere_description": "{{brand}} er blevet åbnet i en anden fane. Hvis det ikke lyder rigtigt, kan du prøve at genindlæse siden.",
+    "room_creation_restricted": "Kunne ikke oprette opkald",
+    "room_creation_restricted_description": "Oprettelse af opkald er muligvis begrænset til autoriserede brugere. Prøv igen senere, eller kontakt din serveradministrator, hvis problemet fortsætter.",
     "unexpected_ec_error": "Der opstod en uventet fejl (<0>Fejlkode:</0> <1> {{ errorCode }}</1>). Kontakt venligst din serveradministrator."
   },
   "group_call_loader": {
@@ -103,6 +107,11 @@
     "knock_reject_heading": "Adgang nægtet",
     "reason": "Årsag: {{reason}}"
   },
+  "handset": {
+    "overlay_back_button": "Tilbage til højttalertilstand",
+    "overlay_description": "Virker kun, når du bruger appen",
+    "overlay_title": "Telefon-højtaler"
+  },
   "hangup_button_label": "Afslut opkald",
   "header_label": "Element Ring hjem",
   "header_participants_label": "Deltagere",
@@ -164,12 +173,18 @@
       "effect_volume_description": "Juster den lydstyrke som reaktioner og håndsoprækninger afspilles med.",
       "effect_volume_label": "Lydstyrke for lydeffekter"
     },
+    "background_blur_header": "Baggrund",
+    "background_blur_label": "Gør videoens baggrund sløret",
+    "blur_not_supported_by_browser": "(Baggrundssløring understøttes ikke af denne enhed.)",
     "developer_tab_title": "Udvikler",
     "devices": {
       "camera": "Kamera",
       "camera_numbered": "Kamera {{n}}",
+      "change_device_button": "Skift lydenhed",
       "default": "Standard",
       "default_named": "Standard <2>({{name}})</2>",
+      "handset": "Telefon",
+      "loudspeaker": "Højttaler",
       "microphone": "Mikrofon",
       "microphone_numbered": "Mikrofon {{n}}",
       "speaker": "Højttaler",

locales/de/app.json

@@ -55,6 +55,7 @@
     "profile": "Profil",
     "reaction": "Reaktion",
     "reactions": "Reaktionen",
+    "reconnecting": "Verbindung wird wiederhergestellt...",
     "settings": "Einstellungen",
     "unencrypted": "Nicht verschlüsselt",
     "username": "Benutzername",
@@ -82,7 +83,7 @@
   "error": {
     "call_is_not_supported": "Anrufe werden nicht unterstützt",
     "call_not_found": "Anruf nicht gefunden",
-    "call_not_found_description": "<0>Dieser Link scheint zu keinem bestehenden Anruf zu gehören. Vergewissern Sie sich, dass Sie den richtigen Link haben, oder <1> erstellen Sie einen neuen</1>. </0>",
+    "call_not_found_description": "<0>Dieser Link scheint zu keinem bestehenden Anruf zu gehören. Es sollte geprüft werden, ob der Link korrekt ist, oder <2>ein neuer erstellt werden</2>.</0>",
     "connection_lost": "Verbindung verloren",
     "connection_lost_description": "Ihre Verbindung zum Anruf wurde unterbrochen.",
     "e2ee_unsupported": "Inkompatibler Browser",
@@ -94,6 +95,8 @@
     "matrix_rtc_focus_missing": "Der Server ist nicht für die Verwendung mit {{brand}} konfiguriert. Bitte den Serveradministrator kontaktieren (Domain: {{domain}}, Fehlercode: {{ errorCode }}).",
     "open_elsewhere": "In einem anderen Tab geöffnet",
     "open_elsewhere_description": "{{brand}} wurde in einem anderen Tab geöffnet. Wenn das nicht richtig klingt, versuchen Sie, die Seite neu zu laden.",
+    "room_creation_restricted": "Anruf konnte nicht erstellt werden",
+    "room_creation_restricted_description": "Das Erstellen von Anrufen ist nur für autorisierte Nutzer möglich. Versuche es später erneut oder kontaktiere deinen Serveradministrator, falls das Problem weiterhin besteht.",
     "unexpected_ec_error": "Ein unerwarteter Fehler ist aufgetreten (<0>Fehlercode: </0> <1>{{ errorCode }}</1>). Bitte den Serveradministrator kontaktieren."
   },
   "group_call_loader": {
@@ -105,6 +108,11 @@
     "knock_reject_heading": "Zugriff verweigert",
     "reason": "Grund: {{reason}}"
   },
+  "handset": {
+    "overlay_back_button": "Zurück zum Lautsprechermodus",
+    "overlay_description": "Nur wenn App im Vordergrund nutzbar",
+    "overlay_title": "Ohrhörer Modus"
+  },
   "hangup_button_label": "Anruf beenden",
   "header_label": "Element Call-Startseite",
   "header_participants_label": "Teilnehmende",
@@ -173,9 +181,11 @@
     "devices": {
       "camera": "Kamera",
       "camera_numbered": "Kamera {{n}}",
+      "change_device_button": "Audiogerät wechseln",
       "default": "Standard",
       "default_named": "Standard<2> ({{name}} )</2>",
-      "earpiece": "Ohrhörer",
+      "handset": "Ohrhörer",
+      "loudspeaker": "Lautsprecher",
       "microphone": "Mikrofon",
       "microphone_numbered": "Mikrofon{{n}}",
       "speaker": "Lautsprecher",

locales/en/app.json

@@ -55,6 +55,7 @@
     "profile": "Profile",
     "reaction": "Reaction",
     "reactions": "Reactions",
+    "reconnecting": "Reconnecting…",
     "settings": "Settings",
     "unencrypted": "Not encrypted",
     "username": "Username",
@@ -79,11 +80,6 @@
     "use_to_device_key_transport": "Use to device key transport. This will fallback to room key transport when another call member sent a room key"
   },
   "disconnected_banner": "Connectivity to the server has been lost.",
-  "earpiece": {
-    "overlay_back_button": "Back to Speaker Mode",
-    "overlay_description": "Only works while using app",
-    "overlay_title": "Earpiece Mode"
-  },
   "error": {
     "call_is_not_supported": "Call is not supported",
     "call_not_found": "Call not found",
@@ -99,6 +95,8 @@
     "matrix_rtc_focus_missing": "The server is not configured to work with {{brand}}. Please contact your server admin (Domain: {{domain}}, Error Code: {{ errorCode }}).",
     "open_elsewhere": "Opened in another tab",
     "open_elsewhere_description": "{{brand}} has been opened in another tab. If that doesn't sound right, try reloading the page.",
+    "room_creation_restricted": "Failed to create call",
+    "room_creation_restricted_description": "Call creation might be restricted to authorized users only. Try again later, or contact your server admin if the problem persists.",
     "unexpected_ec_error": "An unexpected error occurred (<0>Error Code:</0> <1>{{ errorCode }}</1>). Please contact your server admin."
   },
   "group_call_loader": {
@@ -110,6 +108,11 @@
     "knock_reject_heading": "Access denied",
     "reason": "Reason: {{reason}}"
   },
+  "handset": {
+    "overlay_back_button": "Back to Speaker Mode",
+    "overlay_description": "Only works while using app",
+    "overlay_title": "Handset Mode"
+  },
   "hangup_button_label": "End call",
   "header_label": "Element Call Home",
   "header_participants_label": "Participants",
@@ -181,7 +184,7 @@
       "change_device_button": "Change audio device",
       "default": "Default",
       "default_named": "Default <2>({{name}})</2>",
-      "earpiece": "Earpiece",
+      "handset": "Handset",
       "loudspeaker": "Loudspeaker",
       "microphone": "Microphone",
       "microphone_numbered": "Microphone {{n}}",

locales/et/app.json

@@ -61,6 +61,7 @@
     "video": "Video"
   },
   "developer_mode": {
+    "always_show_iphone_earpiece": "Näita iPhone'i kuulari valikut kõikidel platvormidel",
     "crypto_version": "Krüptoteekide versioon: {{version}}",
     "debug_tile_layout_label": "Meediapaanide paigutus",
     "device_id": "Seadme tunnus: {{id}}",
@@ -81,7 +82,7 @@
   "error": {
     "call_is_not_supported": "Kõne pole toetatud",
     "call_not_found": "Kõnet ei leidu",
-    "call_not_found_description": "<0>See link ei tundu olema seotud ühegi olemasoleva kõnega. Kontrolli, et sul on õige link või <1>loo uus</1>.</0>",
+    "call_not_found_description": "<0>See link ei tundu olema seotud ühegi olemasoleva kõnega. Kontrolli, et sul on õige link või <2>loo uus</2>.</0>",
     "connection_lost": "Ühendus on katkenud",
     "connection_lost_description": "Sinu ühendus selle kõnega on katkenud.",
     "e2ee_unsupported": "Mitteühilduv brauser",
@@ -93,6 +94,8 @@
     "matrix_rtc_focus_missing": "See server pole seadistatud töötama rakendusega {{brand}}. Palun võta ühendust serveri halduriga (domeen: {{domain}}, veakood: {{ errorCode }}).",
     "open_elsewhere": "Avatud teisel vahekaardil",
     "open_elsewhere_description": "{{brand}} on avatud teisel vahekaardil. Kui see ei tundu olema õige, proovi selle lehe uuesti laadimist.",
+    "room_creation_restricted": "Kõne loomine ei õnnestunud",
+    "room_creation_restricted_description": "Kõne loomine võib olla lubatud ainult volitatud kasutajatele. Proovi hiljem uuesti või probleemi püsimisel võta ühendust oma serveri haldajaga.",
     "unexpected_ec_error": "Tekkis ootamatu viga (<0>Veakood:</0> <1>{{ errorCode }}</1>). Palun võta ühendust serveri haldajaga."
   },
   "group_call_loader": {
@@ -104,6 +107,10 @@
     "knock_reject_heading": "Liitumine pole lubatud",
     "reason": "Põhjus"
   },
+  "handset": {
+    "overlay_back_button": "Tagasi esineja vaatesse",
+    "overlay_description": "See toimib vaid rakenduse kasutamise ajal"
+  },
   "hangup_button_label": "Lõpeta kõne",
   "header_label": "Avaleht: Element Call",
   "header_participants_label": "Osalejad",
@@ -172,8 +179,10 @@
     "devices": {
       "camera": "Kaamera",
       "camera_numbered": "Kaamera {{n}}",
+      "change_device_button": "Muuda heliseadet",
       "default": "Vaikimisi",
       "default_named": "Vaikimisi <2>({{name}})</2>",
+      "loudspeaker": "Valjuhääldi",
       "microphone": "Mikrofon",
       "microphone_numbered": "Mikrofon {{n}}",
       "speaker": "Kõlar",

locales/ru/app.json

@@ -61,6 +61,7 @@
     "video": "Видео"
   },
   "developer_mode": {
+    "always_show_iphone_earpiece": "Показать опцию наушников для iPhone на всех платформах",
     "crypto_version": "Версия криптографии: {{version}}",
     "debug_tile_layout_label": "Отладка расположения плиток",
     "device_id": "Идентификатор устройства: {{id}}",
@@ -70,6 +71,7 @@
     "livekit_server_info": "Информация о сервере LiveKit",
     "livekit_sfu": "LiveKit SFU: {{url}}",
     "matrix_id": "Matrix ID: {{id}}",
+    "mute_all_audio": "Отключить все звуки (участников, реакции, звуки присоединения)",
     "show_connection_stats": "Показать статистику подключений",
     "show_non_member_tiles": "Показать плитки для медиафайлов, не являющихся участниками",
     "url_params": "Параметры URL-адреса",
@@ -172,6 +174,7 @@
     "devices": {
       "camera": "Камера",
       "camera_numbered": "Камера {{n}}",
+      "change_device_button": "Изменить аудиоустройство",
       "default": "По умолчанию",
       "default_named": "По умолчанию <2>({{name}})</2>",
       "microphone": "Микрофон",

locales/sk/app.json

@@ -61,6 +61,7 @@
     "video": "Video"
   },
   "developer_mode": {
+    "always_show_iphone_earpiece": "Zobraziť možnosť slúchadla iPhone na všetkých platformách",
     "crypto_version": "Krypto verzia: {{version}}",
     "debug_tile_layout_label": "Ladenie rozloženia dlaždíc",
     "device_id": "ID zariadenia: {{id}}",
@@ -81,7 +82,7 @@
   "error": {
     "call_is_not_supported": "Hovor nie je podporovaný",
     "call_not_found": "Hovor nebol nájdený",
-    "call_not_found_description": "<0>Zdá sa, že tento odkaz nepatrí k žiadnemu existujúcemu hovoru. Skontrolujte, či máte správny odkaz, alebo <1> vytvorte nový</1>. </0>",
+    "call_not_found_description": "<0>Zdá sa, že tento odkaz nepatrí k žiadnemu existujúcemu hovoru. Skontrolujte, či máte správny odkaz, alebo <2>vytvorte nový</2>.</0>",
     "connection_lost": "Strata spojenia",
     "connection_lost_description": "Boli ste odpojení od hovoru.",
     "e2ee_unsupported": "Nekompatibilný prehliadač",
@@ -173,8 +174,10 @@
     "devices": {
       "camera": "Kamera",
       "camera_numbered": "Kamera {{n}}",
+      "change_device_button": "Zmeniť zvukové zariadenie",
       "default": "Predvolené",
       "default_named": "Predvolené <2>({{name}})</2>",
+      "loudspeaker": "Reproduktor",
       "microphone": "Mikrofón",
       "microphone_numbered": "Mikrofón {{n}}",
       "speaker": "Reproduktor",

locales/sv/app.json

@@ -61,6 +61,7 @@
     "video": "Video"
   },
   "developer_mode": {
+    "always_show_iphone_earpiece": "Visa iPhone-hörsnäckealternativ på alla plattformar",
     "crypto_version": "Kryptoversion: {{version}}",
     "debug_tile_layout_label": "Felsök panelarrangemang",
     "device_id": "Enhets-ID: {{id}}",
@@ -70,6 +71,7 @@
     "livekit_server_info": "LiveKit-serverinfo",
     "livekit_sfu": "LiveKit SFU: {{url}}",
     "matrix_id": "Matrix-ID: {{id}}",
+    "mute_all_audio": "Tysta allt ljud (deltagare, reaktioner, anslutningsljud)",
     "show_connection_stats": "Visa anslutningsstatistik",
     "show_non_member_tiles": "Visa paneler för media som inte är medlemmar",
     "url_params": "URL-parametrar",
@@ -80,7 +82,7 @@
   "error": {
     "call_is_not_supported": "Call stöds inte",
     "call_not_found": "Samtal hittades inte",
-    "call_not_found_description": "<0>Den länken verkar inte tillhöra något befintligt samtal. Kontrollera att du har rätt länk, eller <1>skapa en ny</1>.</0>",
+    "call_not_found_description": "<0>Den länken verkar inte tillhöra något befintligt samtal. Kontrollera att du har rätt länk, eller <2>skapa en ny</2>.</0>",
     "connection_lost": "Anslutning förlorad",
     "connection_lost_description": "Du kopplades bort från samtalet.",
     "e2ee_unsupported": "Inkompatibel webbläsare",
@@ -92,6 +94,8 @@
     "matrix_rtc_focus_missing": "Servern är inte konfigurerad för att fungera med {{brand}}. Vänligen kontakta serveradministratören (Domän: {{domain}}, Felkod: {{ errorCode }}).",
     "open_elsewhere": "Öppnades i en annan flik",
     "open_elsewhere_description": "{{brand}} har öppnats i en annan flik. Om det inte låter rätt, pröva att ladda om sidan.",
+    "room_creation_restricted": "Misslyckades att skapa samtal",
+    "room_creation_restricted_description": "Samtalsskapande kan vara begränsat till endast behöriga användare. Försök igen senare eller kontakta serveradministratören om problemet kvarstår.",
     "unexpected_ec_error": "Ett oväntat fel inträffade (<0>Felkod:</0> <1>{{ errorCode }}</1>). Kontakta din serveradministratör."
   },
   "group_call_loader": {
@@ -103,6 +107,11 @@
     "knock_reject_heading": "Inte tillåten att gå med",
     "reason": "Anledning"
   },
+  "handset": {
+    "overlay_back_button": "Tillbaka till högtalarläge",
+    "overlay_description": "Fungerar bara när appen används",
+    "overlay_title": "Telefonläge"
+  },
   "hangup_button_label": "Avsluta samtal",
   "header_label": "Element Call Hem",
   "header_participants_label": "Deltagare",
@@ -164,12 +173,18 @@
       "effect_volume_description": "Justera volymen vid vilken reaktioner och handuppräckningseffekter spelas",
       "effect_volume_label": "Ljudeffektsvolym"
     },
+    "background_blur_header": "Bakgrund",
+    "background_blur_label": "Gör bakgrunden i videon suddig",
+    "blur_not_supported_by_browser": "(Bakgrundssuddighet stöds inte av den här enheten.)",
     "developer_tab_title": "Utvecklare",
     "devices": {
       "camera": "Kamera",
       "camera_numbered": "Kamera {{n}}",
+      "change_device_button": "Byt ljudenhet",
       "default": "Förval",
       "default_named": "Förval <2>({{name}})</2>",
+      "handset": "Telefonlur",
+      "loudspeaker": "Högtalare",
       "microphone": "Mikrofon",
       "microphone_numbered": "Mikrofon {{n}}",
       "speaker": "Högtalare",

package.json

@@ -49,7 +49,7 @@
     "@mediapipe/tasks-vision": "^0.10.18",
     "@opentelemetry/api": "^1.4.0",
     "@opentelemetry/core": "^2.0.0",
-    "@opentelemetry/exporter-trace-otlp-http": "^0.202.0",
+    "@opentelemetry/exporter-trace-otlp-http": "^0.203.0",
     "@opentelemetry/resources": "^2.0.0",
     "@opentelemetry/sdk-trace-base": "^2.0.0",
     "@opentelemetry/sdk-trace-web": "^2.0.0",
@@ -81,7 +81,7 @@
     "@typescript-eslint/eslint-plugin": "^8.31.0",
     "@typescript-eslint/parser": "^8.31.0",
     "@use-gesture/react": "^10.2.11",
-    "@vector-im/compound-design-tokens": "^4.0.0",
+    "@vector-im/compound-design-tokens": "^6.0.0",
     "@vector-im/compound-web": "^8.0.0",
     "@vitejs/plugin-react": "^4.0.1",
     "@vitest/coverage-v8": "^3.0.0",
@@ -129,7 +129,7 @@
     "typescript-eslint-language-service": "^5.0.5",
     "unique-names-generator": "^4.6.0",
     "vaul": "^1.0.0",
-    "vite": "^6.0.0",
+    "vite": "^7.0.0",
     "vite-plugin-generate-file": "^0.3.0",
     "vite-plugin-html": "^3.2.2",
     "vite-plugin-svgr": "^4.0.0",

playwright/create-call.spec.ts

@@ -40,6 +40,11 @@ test("Start a new call then leave and show the feedback screen", async ({
   // The tooltip with the name should be visible
   await expect(page.getByTestId("name_tag")).toContainText("John Doe");
 
+  // Resize the window to resemble a small mobile phone
+  await page.setViewportSize({ width: 350, height: 660 });
+  // We should still be able to send reactions at this screen size
+  await expect(page.getByRole("button", { name: "Reactions" })).toBeVisible();
+
   // leave the call
   await page.getByTestId("incall_leave").click();
   await expect(page.getByRole("heading")).toContainText(

playwright/errors.spec.ts

@@ -72,3 +72,56 @@ test("Should automatically retry non fatal JWT errors", async ({
   await hasRetriedPromise;
   await expect(page.getByTestId("video").first()).toBeVisible();
 });
+
+test("Should show error screen if call creation is restricted", async ({
+  page,
+}) => {
+  await page.goto("/");
+
+  // We need the socket connection to fail, but this cannot be done by using the websocket route.
+  // Instead, we will trick the app by returning a bad URL for the SFU that will not be reachable an error out.
+  await page.route(
+    "**/matrix-rtc.m.localhost/livekit/jwt/sfu/get",
+    async (route) =>
+      await route.fulfill({
+        status: 200,
+        contentType: "application/json",
+        body: JSON.stringify({
+          url: "wss://badurltotricktest/livekit/sfu",
+          jwt: "FAKE",
+        }),
+      }),
+  );
+
+  // Then if the socket connection fails, livekit will try to validate the token!
+  // Livekit will not auto_create anymore and will return a 404 error.
+  await page.route(
+    "**/badurltotricktest/livekit/sfu/rtc/validate?**",
+    async (route) =>
+      await route.fulfill({
+        status: 404,
+        contentType: "text/plain",
+        body: "requested room does not exist",
+      }),
+  );
+
+  await page.pause();
+
+  await page.getByTestId("home_callName").click();
+  await page.getByTestId("home_callName").fill("HelloCall");
+  await page.getByTestId("home_displayName").click();
+  await page.getByTestId("home_displayName").fill("John Doe");
+  await page.getByTestId("home_go").click();
+
+  // Join the call
+  await page.getByTestId("lobby_joinCall").click();
+
+  await page.pause();
+  // Should fail
+  await expect(page.getByText("Failed to create call")).toBeVisible();
+  await expect(
+    page.getByText(
+      /Call creation might be restricted to authorized users only/,
+    ),
+  ).toBeVisible();
+});

playwright/fixtures/widget-user.ts

@@ -159,8 +159,8 @@ export const widgetTest = test.extend<MyFixtures>({
     } = await registerUser(browser, userB);
 
     // Invite the second user
-    await ewPage1.getByRole("button", { name: "Add room" }).click();
-    await ewPage1.getByText("New room").click();
+    await ewPage1.getByRole("button", { name: "Add", exact: true }).click();
+    await ewPage1.getByRole("menuitem", { name: "New Room" }).click();
     await ewPage1.getByRole("textbox", { name: "Name" }).fill("Welcome Room");
     await ewPage1.getByRole("button", { name: "Create room" }).click();
     await expect(ewPage1.getByText("You created this room.")).toBeVisible();
@@ -184,9 +184,9 @@ export const widgetTest = test.extend<MyFixtures>({
 
     // Accept the invite
     await expect(
-      ewPage2.getByRole("treeitem", { name: "Welcome Room" }),
+      ewPage2.getByRole("option", { name: "Welcome Room" }),
     ).toBeVisible();
-    await ewPage2.getByRole("treeitem", { name: "Welcome Room" }).click();
+    await ewPage2.getByRole("option", { name: "Welcome Room" }).click();
     await ewPage2.getByRole("button", { name: "Accept" }).click();
     await expect(
       ewPage2.getByRole("main").getByRole("heading", { name: "Welcome Room" }),

playwright/reconnect.spec.ts

@@ -0,0 +1,60 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { expect, test } from "@playwright/test";
+
+// Skip test for Firefox, due to page.keyboard.press("Tab") not reliable on headless mode
+test.skip(
+  ({ browserName }) => browserName === "firefox",
+  'This test is not working on firefox, page.keyboard.press("Tab") not reliable in headless mode',
+);
+
+test("can only interact with header and footer while reconnecting", async ({
+  page,
+}) => {
+  await page.goto("/");
+  await page.getByTestId("home_callName").click();
+  await page.getByTestId("home_callName").fill("Test call");
+  await page.getByTestId("home_displayName").click();
+  await page.getByTestId("home_displayName").fill("Test user");
+  // If we do not call fastForward here, we end up with Date.now() returning an actual timestamp
+  // but once we call `await page.clock.fastForward(20000);` later this will reset Date.now() to 0
+  // and we will never get into probablyDisconnected state?
+  await page.clock.fastForward(10);
+  await page.getByTestId("home_go").click();
+
+  await expect(page.locator("video")).toBeVisible();
+  await expect(page.getByTestId("lobby_joinCall")).toBeVisible();
+
+  // Join the call
+  await page.getByTestId("lobby_joinCall").click();
+
+  // The media tile for the local user should become visible
+  await new Promise((resolve) => setTimeout(resolve, 1500));
+  await expect(page.getByTestId("name_tag")).toContainText("Test user");
+
+  // Now disconnect from the internet
+  await page.route("https://synapse.m.localhost/**/*", async (route) => {
+    await new Promise((resolve) => setTimeout(resolve, 10000));
+    await route.continue();
+  });
+  await page.clock.fastForward(20000);
+
+  await expect(
+    page.getByRole("dialog", { name: "Reconnecting…" }),
+  ).toBeVisible();
+
+  // Tab order should jump directly from header to footer, skipping media tiles
+  await page.getByRole("button", { name: "Mute microphone" }).focus();
+  await expect(
+    page.getByRole("button", { name: "Mute microphone" }),
+  ).toBeFocused();
+  await page.keyboard.press("Tab");
+  await expect(page.getByRole("button", { name: "Stop video" })).toBeFocused();
+  // Most critically, we should be able to press the hangup button
+  await page.getByRole("button", { name: "End call" }).click();
+});

playwright/restricted-sfu.spec.ts

@@ -0,0 +1,75 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { expect, test } from "@playwright/test";
+import { sleep } from "matrix-js-sdk/lib/utils.js";
+
+test("Should request JWT token before starting the call", async ({ page }) => {
+  await page.goto("/");
+
+  let sfGetTimestamp = 0;
+  let sendStateEventTimestamp = 0;
+  await page.route(
+    "**/matrix-rtc.m.localhost/livekit/jwt/sfu/get",
+    async (route) => {
+      await sleep(2000); // Simulate very slow request
+      await route.continue();
+      sfGetTimestamp = Date.now();
+    },
+  );
+
+  await page.route(
+    "**/state/org.matrix.msc3401.call.member/**",
+    async (route) => {
+      await route.continue();
+      sendStateEventTimestamp = Date.now();
+    },
+  );
+
+  await page.getByTestId("home_callName").click();
+  await page.getByTestId("home_callName").fill("HelloCall");
+  await page.getByTestId("home_displayName").click();
+  await page.getByTestId("home_displayName").fill("John Doe");
+  await page.getByTestId("home_go").click();
+
+  // Join the call
+  await page.getByTestId("lobby_joinCall").click();
+  await page.waitForTimeout(4000);
+  // Ensure that the call is connected
+  await page
+    .locator("div")
+    .filter({ hasText: /^HelloCall$/ })
+    .click();
+
+  expect(sfGetTimestamp).toBeGreaterThan(0);
+  expect(sendStateEventTimestamp).toBeGreaterThan(0);
+  expect(sfGetTimestamp).toBeLessThan(sendStateEventTimestamp);
+});
+
+test("Error when pre-warming the focus are caught by the ErrorBoundary", async ({
+  page,
+}) => {
+  await page.goto("/");
+
+  await page.route("**/openid/request_token", async (route) => {
+    await route.fulfill({
+      status: 418, // Simulate an error not retryable
+    });
+  });
+
+  await page.getByTestId("home_callName").click();
+  await page.getByTestId("home_callName").fill("HelloCall");
+  await page.getByTestId("home_displayName").click();
+  await page.getByTestId("home_displayName").fill("John Doe");
+  await page.getByTestId("home_go").click();
+
+  // Join the call
+  await page.getByTestId("lobby_joinCall").click();
+
+  // Should fail
+  await expect(page.getByText("Something went wrong")).toBeVisible();
+});

playwright/sfu-reconnect-bug.spec.ts

@@ -100,5 +100,5 @@ test("When creator left, avoid reconnect to the same SFU", async ({
   // https://github.com/element-hq/element-call/issues/3344
   // The app used to request a new jwt token then to reconnect to the SFU
   expect(wsConnectionCount).toBe(1);
-  expect(sfuGetCallCount).toBe(1);
+  expect(sfuGetCallCount).toBe(2 /* the first one is for the warmup */);
 });

playwright/widget/simple-create.spec.ts

@@ -49,7 +49,10 @@ widgetTest("Start a new call as widget", async ({ asWidget, browserName }) => {
 
   // Check the join indicator on the room list
   await expect(
-    brooks.page.locator("div").filter({ hasText: /^Joined • 1$/ }),
+    brooks.page
+      .locator('iframe[title="Element Call"]')
+      .contentFrame()
+      .getByRole("button", { name: "End call" }),
   ).toBeVisible();
 
   // Join from the other side
@@ -59,26 +62,28 @@ widgetTest("Start a new call as widget", async ({ asWidget, browserName }) => {
   ).toBeVisible();
   await whistler.page.getByRole("button", { name: "Join" }).click();
 
-  await expect(
-    whistler.page
-      .locator('iframe[title="Element Call"]')
-      .contentFrame()
-      .getByTestId("lobby_joinCall"),
-  ).toBeVisible();
+  // Currently disabled due to recent Element Web is bypassing Lobby
+  // await expect(
+  //   whistler.page
+  //     .locator('iframe[title="Element Call"]')
+  //     .contentFrame()
+  //     .getByTestId("lobby_joinCall"),
+  // ).toBeVisible();
+  //
+  // await whistler.page
+  //   .locator('iframe[title="Element Call"]')
+  //   .contentFrame()
+  //   .getByTestId("lobby_joinCall")
+  //   .click();
 
-  await whistler.page
-    .locator('iframe[title="Element Call"]')
-    .contentFrame()
-    .getByTestId("lobby_joinCall")
-    .click();
+  // Currrenty disabled due to recent Element Web not indicating the number of participants
+  // await expect(
+  //   whistler.page.locator("div").filter({ hasText: /^Joined • 2$/ }),
+  // ).toBeVisible();
 
-  await expect(
-    whistler.page.locator("div").filter({ hasText: /^Joined • 2$/ }),
-  ).toBeVisible();
-
-  await expect(
-    brooks.page.locator("div").filter({ hasText: /^Joined • 2$/ }),
-  ).toBeVisible();
+  // await expect(
+  //   brooks.page.locator("div").filter({ hasText: /^Joined • 2$/ }),
+  // ).toBeVisible();
 
   // Whistler leaves
   await whistler.page.waitForTimeout(1000);

src/App.tsx

@@ -24,7 +24,6 @@ import { RegisterPage } from "./auth/RegisterPage";
 import { RoomPage } from "./room/RoomPage";
 import { ClientProvider } from "./ClientContext";
 import { ErrorPage, LoadingPage } from "./FullScreenView";
-import { DisconnectedBanner } from "./DisconnectedBanner";
 import { Initializer } from "./initializer";
 import { widget } from "./widget";
 import { useTheme } from "./useTheme";
@@ -86,7 +85,6 @@ export const App: FC<Props> = ({ vm }) => {
           <Sentry.ErrorBoundary
             fallback={(error) => <ErrorPage error={error} widget={widget} />}
           >
-            <DisconnectedBanner />
             <Routes>
               <SentryRoute path="/" element={<HomePage />} />
               <SentryRoute path="/login" element={<LoginPage />} />

src/AppBar.tsx

@@ -17,10 +17,7 @@ import {
   useState,
 } from "react";
 import { Heading, IconButton, Tooltip } from "@vector-im/compound-web";
-import {
-  ArrowLeftIcon,
-  CollapseIcon,
-} from "@vector-im/compound-design-tokens/assets/web/icons";
+import { CollapseIcon } from "@vector-im/compound-design-tokens/assets/web/icons";
 import { useTranslation } from "react-i18next";
 
 import { Header, LeftNav, RightNav } from "./Header";
@@ -45,7 +42,6 @@ interface Props {
  */
 export const AppBar: FC<Props> = ({ children }) => {
   const { t } = useTranslation();
-  const BackIcon = platform === "ios" ? CollapseIcon : ArrowLeftIcon;
   const onBackClick = useCallback((e: MouseEvent) => {
     e.preventDefault();
     window.controls.onBackButtonPressed?.();
@@ -65,11 +61,15 @@ export const AppBar: FC<Props> = ({ children }) => {
         style={{ display: hidden ? "none" : "block" }}
         className={styles.bar}
       >
-        <Header>
+        <Header
+          // App bar is mainly seen in the call view, which has its own
+          // 'reconnecting' toast
+          disconnectedBanner={false}
+        >
           <LeftNav>
             <Tooltip label={t("common.back")}>
               <IconButton onClick={onBackClick}>
-                <BackIcon />
+                <CollapseIcon />
               </IconButton>
             </Tooltip>
           </LeftNav>

src/Header.tsx

@@ -17,27 +17,38 @@ import Logo from "./icons/Logo.svg?react";
 import { Avatar, Size } from "./Avatar";
 import { EncryptionLock } from "./room/EncryptionLock";
 import { useMediaQuery } from "./useMediaQuery";
+import { DisconnectedBanner } from "./DisconnectedBanner";
 
 interface HeaderProps extends HTMLAttributes<HTMLElement> {
   ref?: Ref<HTMLElement>;
   children: ReactNode;
   className?: string;
+  /**
+   * Whether the header should display an informational banner whenever the
+   * client is disconnected from the homeserver.
+   * @default true
+   */
+  disconnectedBanner?: boolean;
 }
 
 export const Header: FC<HeaderProps> = ({
   ref,
   children,
   className,
+  disconnectedBanner = true,
   ...rest
 }) => {
   return (
-    <header
-      ref={ref}
-      className={classNames(styles.header, className)}
-      {...rest}
-    >
-      {children}
-    </header>
+    <>
+      <header
+        ref={ref}
+        className={classNames(styles.header, className)}
+        {...rest}
+      >
+        {children}
+      </header>
+      {disconnectedBanner && <DisconnectedBanner />}
+    </>
   );
 };
 

src/Overlay.module.css

@@ -35,6 +35,8 @@ Please see LICENSE in the repository root for full details.
 
 .bg.animate[data-state="closed"] {
   animation: fade-out 130ms;
+  opacity: 0;
+  pointer-events: none;
 }
 
 .overlay {

src/Toast.tsx

@@ -45,6 +45,12 @@ interface Props {
    * A supporting icon to display within the toast.
    */
   Icon?: ComponentType<SVGAttributes<SVGElement>>;
+  /**
+   * Whether the toast should be modal, making it fill the screen (by portalling
+   * it into the root of the document) and trap focus until dismissed.
+   * @default true
+   */
+  modal?: boolean;
 }
 
 /**
@@ -56,6 +62,7 @@ export const Toast: FC<Props> = ({
   autoDismiss,
   children,
   Icon,
+  modal = true,
 }) => {
   const onOpenChange = useCallback(
     (open: boolean) => {
@@ -71,29 +78,33 @@ export const Toast: FC<Props> = ({
     }
   }, [open, autoDismiss, onDismiss]);
 
+  const content = (
+    <>
+      <DialogOverlay
+        className={classNames(overlayStyles.bg, overlayStyles.animate)}
+      />
+      <DialogContent aria-describedby={undefined} asChild>
+        <DialogClose
+          className={classNames(
+            overlayStyles.overlay,
+            overlayStyles.animate,
+            styles.toast,
+          )}
+        >
+          <DialogTitle asChild>
+            <Text as="h3" size="sm" weight="semibold">
+              {children}
+            </Text>
+          </DialogTitle>
+          {Icon && <Icon width={20} height={20} aria-hidden />}
+        </DialogClose>
+      </DialogContent>
+    </>
+  );
+
   return (
-    <DialogRoot open={open} onOpenChange={onOpenChange}>
-      <DialogPortal>
-        <DialogOverlay
-          className={classNames(overlayStyles.bg, overlayStyles.animate)}
-        />
-        <DialogContent aria-describedby={undefined} asChild>
-          <DialogClose
-            className={classNames(
-              overlayStyles.overlay,
-              overlayStyles.animate,
-              styles.toast,
-            )}
-          >
-            <DialogTitle asChild>
-              <Text as="h3" size="sm" weight="semibold">
-                {children}
-              </Text>
-            </DialogTitle>
-            {Icon && <Icon width={20} height={20} aria-hidden />}
-          </DialogClose>
-        </DialogContent>
-      </DialogPortal>
+    <DialogRoot open={open} onOpenChange={onOpenChange} modal={modal}>
+      {modal ? <DialogPortal>{content}</DialogPortal> : content}
     </DialogRoot>
   );
 };

src/UrlParams.test.ts

@@ -5,12 +5,15 @@ SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE in the repository root for full details.
 */
 
-import { describe, expect, it } from "vitest";
+import { describe, expect, it, onTestFinished, vi } from "vitest";
+import { logger } from "matrix-js-sdk/lib/logger";
 
+import * as PlatformMod from "../src/Platform";
 import {
   getRoomIdentifierFromUrl,
+  computeUrlParams,
+  HeaderStyle,
   getUrlParams,
-  UserIntent,
 } from "../src/UrlParams";
 
 const ROOM_NAME = "roomNameHere";
@@ -82,6 +85,16 @@ describe("UrlParams", () => {
         getRoomIdentifierFromUrl("", `?roomId=${ROOM_ID}`, "").roomId,
       ).toBe(ROOM_ID);
     });
+    it("(roomId with unprintable characters)", () => {
+      const invisibleChar = "\u2066";
+      expect(
+        getRoomIdentifierFromUrl(
+          "",
+          `?roomId=${invisibleChar}${ROOM_ID}${invisibleChar}`,
+          "",
+        ).roomId,
+      ).toBe(ROOM_ID);
+    });
   });
 
   it("ignores room alias", () => {
@@ -93,16 +106,16 @@ describe("UrlParams", () => {
 
   describe("preload", () => {
     it("defaults to false", () => {
-      expect(getUrlParams().preload).toBe(false);
+      expect(computeUrlParams().preload).toBe(false);
     });
 
     it("ignored in SPA mode", () => {
-      expect(getUrlParams("?preload=true").preload).toBe(false);
+      expect(computeUrlParams("?preload=true").preload).toBe(false);
     });
 
     it("respected in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?preload=true&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).preload,
       ).toBe(true);
@@ -111,19 +124,20 @@ describe("UrlParams", () => {
 
   describe("returnToLobby", () => {
     it("is false in SPA mode", () => {
-      expect(getUrlParams("?returnToLobby=true").returnToLobby).toBe(false);
+      expect(computeUrlParams("?returnToLobby=true").returnToLobby).toBe(false);
     });
 
     it("defaults to false in widget mode", () => {
       expect(
-        getUrlParams("?widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo")
-          .returnToLobby,
+        computeUrlParams(
+          "?widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
+        ).returnToLobby,
       ).toBe(false);
     });
 
     it("respected in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?returnToLobby=true&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).returnToLobby,
       ).toBe(true);
@@ -132,12 +146,12 @@ describe("UrlParams", () => {
 
   describe("userId", () => {
     it("is ignored in SPA mode", () => {
-      expect(getUrlParams("?userId=asd").userId).toBe(null);
+      expect(computeUrlParams("?userId=asd").userId).toBe(null);
     });
 
     it("is parsed in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?userId=asd&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).userId,
       ).toBe("asd");
@@ -146,12 +160,12 @@ describe("UrlParams", () => {
 
   describe("deviceId", () => {
     it("is ignored in SPA mode", () => {
-      expect(getUrlParams("?deviceId=asd").deviceId).toBe(null);
+      expect(computeUrlParams("?deviceId=asd").deviceId).toBe(null);
     });
 
     it("is parsed in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?deviceId=asd&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).deviceId,
       ).toBe("asd");
@@ -160,12 +174,12 @@ describe("UrlParams", () => {
 
   describe("baseUrl", () => {
     it("is ignored in SPA mode", () => {
-      expect(getUrlParams("?baseUrl=asd").baseUrl).toBe(null);
+      expect(computeUrlParams("?baseUrl=asd").baseUrl).toBe(null);
     });
 
     it("is parsed in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?baseUrl=asd&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).baseUrl,
       ).toBe("asd");
@@ -175,84 +189,179 @@ describe("UrlParams", () => {
   describe("viaServers", () => {
     it("is ignored in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?viaServers=asd&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).viaServers,
       ).toBe(null);
     });
 
     it("is parsed in SPA mode", () => {
-      expect(getUrlParams("?viaServers=asd").viaServers).toBe("asd");
+      expect(computeUrlParams("?viaServers=asd").viaServers).toBe("asd");
     });
   });
 
   describe("homeserver", () => {
     it("is ignored in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?homeserver=asd&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).homeserver,
       ).toBe(null);
     });
 
     it("is parsed in SPA mode", () => {
-      expect(getUrlParams("?homeserver=asd").homeserver).toBe("asd");
+      expect(computeUrlParams("?homeserver=asd").homeserver).toBe("asd");
     });
   });
 
   describe("intent", () => {
-    it("defaults to unknown", () => {
-      expect(getUrlParams().intent).toBe(UserIntent.Unknown);
+    const noIntentDefaults = {
+      confineToRoom: false,
+      appPrompt: true,
+      preload: false,
+      header: HeaderStyle.Standard,
+      showControls: true,
+      hideScreensharing: false,
+      allowIceFallback: false,
+      perParticipantE2EE: false,
+      controlledAudioDevices: false,
+      skipLobby: false,
+      returnToLobby: false,
+      sendNotificationType: undefined,
+    };
+    const startNewCallDefaults = (platform: string): object => ({
+      confineToRoom: true,
+      appPrompt: false,
+      preload: false,
+      header: platform === "desktop" ? HeaderStyle.None : HeaderStyle.AppBar,
+      showControls: true,
+      hideScreensharing: false,
+      allowIceFallback: true,
+      perParticipantE2EE: true,
+      controlledAudioDevices: platform === "desktop" ? false : true,
+      skipLobby: true,
+      returnToLobby: false,
+      sendNotificationType: platform === "desktop" ? "notification" : "ring",
+    });
+    const joinExistingCallDefaults = (platform: string): object => ({
+      confineToRoom: true,
+      appPrompt: false,
+      preload: false,
+      header: platform === "desktop" ? HeaderStyle.None : HeaderStyle.AppBar,
+      showControls: true,
+      hideScreensharing: false,
+      allowIceFallback: true,
+      perParticipantE2EE: true,
+      controlledAudioDevices: platform === "desktop" ? false : true,
+      skipLobby: false,
+      returnToLobby: false,
+      sendNotificationType: "notification",
+      defaultAudioEnabled: true,
+      defaultVideoEnabled: true,
+    });
+    it("use no-intent-defaults with unknown intent", () => {
+      expect(computeUrlParams()).toMatchObject(noIntentDefaults);
     });
 
     it("ignores intent if it is not a valid value", () => {
-      expect(getUrlParams("?intent=foo").intent).toBe(UserIntent.Unknown);
+      expect(computeUrlParams("?intent=foo")).toMatchObject(noIntentDefaults);
     });
 
     it("accepts start_call", () => {
-      expect(getUrlParams("?intent=start_call").intent).toBe(
-        UserIntent.StartNewCall,
-      );
+      expect(
+        computeUrlParams(
+          "?intent=start_call&widgetId=1234&parentUrl=parent.org",
+        ),
+      ).toMatchObject({ ...startNewCallDefaults("desktop"), skipLobby: false });
+    });
+
+    it("accepts start_call_dm mobile", () => {
+      vi.spyOn(PlatformMod, "platform", "get").mockReturnValue("android");
+      onTestFinished(() => {
+        vi.spyOn(PlatformMod, "platform", "get").mockReturnValue("desktop");
+      });
+      expect(
+        computeUrlParams(
+          "?intent=start_call_dm&widgetId=1234&parentUrl=parent.org",
+        ),
+      ).toMatchObject(startNewCallDefaults("android"));
+    });
+
+    it("accepts start_call_dm mobile and prioritizes overwritten params", () => {
+      vi.spyOn(PlatformMod, "platform", "get").mockReturnValue("android");
+      onTestFinished(() => {
+        vi.spyOn(PlatformMod, "platform", "get").mockReturnValue("desktop");
+      });
+      expect(
+        computeUrlParams(
+          "?intent=start_call_dm&widgetId=1234&parentUrl=parent.org&sendNotificationType=notification",
+        ),
+      ).toMatchObject({
+        ...startNewCallDefaults("android"),
+        sendNotificationType: "notification",
+      });
     });
 
     it("accepts join_existing", () => {
-      expect(getUrlParams("?intent=join_existing").intent).toBe(
-        UserIntent.JoinExistingCall,
-      );
+      expect(
+        computeUrlParams(
+          "?intent=join_existing&widgetId=1234&parentUrl=parent.org",
+        ),
+      ).toMatchObject(joinExistingCallDefaults("desktop"));
     });
   });
 
   describe("skipLobby", () => {
     it("defaults to false", () => {
-      expect(getUrlParams().skipLobby).toBe(false);
+      expect(computeUrlParams().skipLobby).toBe(false);
     });
 
     it("defaults to false if intent is start_call in SPA mode", () => {
-      expect(getUrlParams("?intent=start_call").skipLobby).toBe(false);
+      expect(computeUrlParams("?intent=start_call").skipLobby).toBe(false);
     });
 
-    it("defaults to true if intent is start_call in widget mode", () => {
+    it("defaults to false if intent is start_call in widget mode", () => {
       expect(
-        getUrlParams(
+        computeUrlParams(
           "?intent=start_call&widgetId=12345&parentUrl=https%3A%2F%2Flocalhost%2Ffoo",
         ).skipLobby,
-      ).toBe(true);
+      ).toBe(false);
     });
 
     it("default to false if intent is join_existing", () => {
-      expect(getUrlParams("?intent=join_existing").skipLobby).toBe(false);
+      expect(computeUrlParams("?intent=join_existing").skipLobby).toBe(false);
     });
   });
   describe("header", () => {
     it("uses header if provided", () => {
-      expect(getUrlParams("?header=app_bar&hideHeader=true").header).toBe(
+      expect(computeUrlParams("?header=app_bar&hideHeader=true").header).toBe(
         "app_bar",
       );
-      expect(getUrlParams("?header=none&hideHeader=false").header).toBe("none");
+      expect(computeUrlParams("?header=none&hideHeader=false").header).toBe(
+        "none",
+      );
     });
-    it("converts hideHeader to the correct header value", () => {
-      expect(getUrlParams("?hideHeader=true").header).toBe("none");
-      expect(getUrlParams("?hideHeader=false").header).toBe("standard");
+  });
+  describe("getUrlParams", () => {
+    it("uses cached values", () => {
+      const spy = vi.spyOn(logger, "info");
+      // call get once
+      const params = getUrlParams("?header=app_bar&hideHeader=true", "");
+      // call get twice
+      expect(getUrlParams("?header=app_bar&hideHeader=true", "")).toBe(params);
+      // expect compute to only be called once
+      // it will only log when it is computing the values
+      expect(spy).toHaveBeenCalledExactlyOnceWith(
+        "UrlParams: final set of url params\n",
+        "intent:",
+        "unknown",
+        "\nproperties:",
+        expect.any(Object),
+        "configuration:",
+        expect.any(Object),
+        "intentAndPlatformDerivedConfiguration:",
+        {},
+      );
     });
   });
 });

src/UrlParams.ts

@@ -8,10 +8,13 @@ Please see LICENSE in the repository root for full details.
 import { useMemo } from "react";
 import { useLocation } from "react-router-dom";
 import { logger } from "matrix-js-sdk/lib/logger";
+import { type RTCNotificationType } from "matrix-js-sdk/lib/matrixrtc";
+import { pickBy } from "lodash-es";
 
 import { Config } from "./config/Config";
 import { type EncryptionSystem } from "./e2ee/sharedKeyManagement";
 import { E2eeType } from "./e2ee/e2eeType";
+import { platform } from "./Platform";
 
 interface RoomIdentifier {
   roomAlias: string | null;
@@ -22,6 +25,8 @@ interface RoomIdentifier {
 export enum UserIntent {
   StartNewCall = "start_call",
   JoinExistingCall = "join_existing",
+  StartNewCallDM = "start_call_dm",
+  JoinExistingCallDM = "join_existing_dm",
   Unknown = "unknown",
 }
 
@@ -31,12 +36,12 @@ export enum HeaderStyle {
   AppBar = "app_bar",
 }
 
-// If you need to add a new flag to this interface, prefer a name that describes
-// a specific behavior (such as 'confineToRoom'), rather than one that describes
-// the situations that call for this behavior ('isEmbedded'). This makes it
-// clearer what each flag means, and helps us avoid coupling Element Call's
-// behavior to the needs of specific consumers.
-export interface UrlParams {
+/**
+ * The UrlProperties are used to pass required data to the widget.
+ * Those are different in different rooms, users, devices. They do not configure the behavior of the
+ * widget but provide the required data to the widget.
+ */
+export interface UrlProperties {
   // Widget api related params
   widgetId: string | null;
   parentUrl: string | null;
@@ -48,45 +53,11 @@ export interface UrlParams {
    * is also not validated, where it is in useRoomIdentifier().
    */
   roomId: string | null;
-  /**
-   * Whether the app should keep the user confined to the current call/room.
-   */
-  confineToRoom: boolean;
-  /**
-   * Whether upon entering a room, the user should be prompted to launch the
-   * native mobile app. (Affects only Android and iOS.)
-   *
-   * The app prompt must also be enabled in the config for this to take effect.
-   */
-  appPrompt: boolean;
-  /**
-   * Whether the app should pause before joining the call until it sees an
-   * io.element.join widget action, allowing it to be preloaded.
-   */
-  preload: boolean;
-  /**
-   * The style of headers to show. "standard" is the default arrangement, "none"
-   * hides the header entirely, and "app_bar" produces a header with a back
-   * button like you might see in mobile apps. The callback for the back button
-   * is window.controls.onBackButtonPressed.
-   */
-  header: HeaderStyle;
-  /**
-   * Whether the controls should be shown. For screen recording no controls can be desired.
-   */
-  showControls: boolean;
-  /**
-   * Whether to hide the screen-sharing button.
-   */
-  hideScreensharing: boolean;
-  /**
-   * Whether to use end-to-end encryption.
-   */
-  e2eEnabled: boolean;
   /**
    * The user's ID (only used in matryoshka mode).
    */
   userId: string | null;
+
   /**
    * The display name to use for auto-registration.
    */
@@ -124,14 +95,96 @@ export interface UrlParams {
    */
   posthogApiKey: string | null;
   /**
-   * Whether the app is allowed to use fallback STUN servers for ICE in case the
-   * user's homeserver doesn't provide any.
+   * Whether to use end-to-end encryption.
    */
-  allowIceFallback: boolean;
+  e2eEnabled: boolean;
   /**
    * E2EE password
    */
   password: string | null;
+  /** This defines the homeserver that is going to be used when joining a room.
+   * It has to be set to a non default value for links to rooms
+   * that are not on the default homeserver,
+   * that is in use for the current user.
+   */
+  viaServers: string | null;
+
+  /**
+   * This defines the homeserver that is going to be used when registering
+   * a new (guest) user.
+   * This can be user to configure a non default guest user server when
+   * creating a spa link.
+   */
+  homeserver: string | null;
+
+  /**
+   * The rageshake submit URL. This is only used in the embedded package of Element Call.
+   */
+  rageshakeSubmitUrl: string | null;
+
+  /**
+   * The Sentry DSN. This is only used in the embedded package of Element Call.
+   */
+  sentryDsn: string | null;
+
+  /**
+   * The Sentry environment. This is only used in the embedded package of Element Call.
+   */
+  sentryEnvironment: string | null;
+  /**
+   * The theme to use for element call.
+   * can be "light", "dark", "light-high-contrast" or "dark-high-contrast".
+   */
+  theme: string | null;
+}
+
+/**
+ * The configuration for the app, which can be set via URL parameters.
+ * Those property are different to the UrlProperties, since they are all optional
+ * and configure the behavior of the app. Their value is the same if EC is used in
+ * the same context but with different accounts/users.
+ *
+ * Their defaults can be controlled by the `intent` property.
+ */
+export interface UrlConfiguration {
+  /**
+   * Whether the app should keep the user confined to the current call/room.
+   */
+  confineToRoom: boolean;
+  /**
+   * Whether upon entering a room, the user should be prompted to launch the
+   * native mobile app. (Affects only Android and iOS.)
+   *
+   * The app prompt must also be enabled in the config for this to take effect.
+   */
+  appPrompt: boolean;
+  /**
+   * Whether the app should pause before joining the call until it sees an
+   * io.element.join widget action, allowing it to be preloaded.
+   */
+  preload: boolean;
+  /**
+   * The style of headers to show. "standard" is the default arrangement, "none"
+   * hides the header entirely, and "app_bar" produces a header with a back
+   * button like you might see in mobile apps. The callback for the back button
+   * is window.controls.onBackButtonPressed.
+   */
+  header: HeaderStyle;
+  /**
+   * Whether the controls should be shown. For screen recording no controls can be desired.
+   */
+  showControls: boolean;
+  /**
+   * Whether to hide the screen-sharing button.
+   */
+  hideScreensharing: boolean;
+
+  /**
+   * Whether the app is allowed to use fallback STUN servers for ICE in case the
+   * user's homeserver doesn't provide any.
+   */
+  allowIceFallback: boolean;
+
   /**
    * Whether the app should use per participant keys for E2EE.
    */
@@ -154,46 +207,41 @@ export interface UrlParams {
    */
   returnToLobby: boolean;
   /**
-   * The theme to use for element call.
-   * can be "light", "dark", "light-high-contrast" or "dark-high-contrast".
+   * Whether and what type of notification EC should send, when the user joins the call.
    */
-  theme: string | null;
-  /** This defines the homeserver that is going to be used when joining a room.
-   * It has to be set to a non default value for links to rooms
-   * that are not on the default homeserver,
-   * that is in use for the current user.
-   */
-  viaServers: string | null;
+  sendNotificationType?: RTCNotificationType;
   /**
-   * This defines the homeserver that is going to be used when registering
-   * a new (guest) user.
-   * This can be user to configure a non default guest user server when
-   * creating a spa link.
+   * Whether the app should automatically leave the call when there
+   * is no one left in the call.
+   * This is one part to make the call matrixRTC session behave like a telephone call.
    */
-  homeserver: string | null;
+  autoLeaveWhenOthersLeft: boolean;
 
   /**
-   * The user's intent with respect to the call.
-   * e.g. if they clicked a Start Call button, this would be `start_call`.
-   * If it was a Join Call button, it would be `join_existing`.
+   * If the client should behave like it is awaiting an answer if a notification was sent (wait for call pick up).
+   * This is a no-op if not combined with sendNotificationType.
+   *
+   * This entails:
+   *  - show ui that it is awaiting an answer
+   *  - play a sound that indicates that it is awaiting an answer
+   *  - auto-dismiss the call widget once the notification lifetime expires on the receivers side.
    */
-  intent: string | null;
-
-  /**
-   * The rageshake submit URL. This is only used in the embedded package of Element Call.
-   */
-  rageshakeSubmitUrl: string | null;
-
-  /**
-   * The Sentry DSN. This is only used in the embedded package of Element Call.
-   */
-  sentryDsn: string | null;
-
-  /**
-   * The Sentry environment. This is only used in the embedded package of Element Call.
-   */
-  sentryEnvironment: string | null;
+  waitForCallPickup: boolean;
 }
+interface IntentAndPlatformDerivedConfiguration {
+  defaultAudioEnabled?: boolean;
+  defaultVideoEnabled?: boolean;
+}
+
+// If you need to add a new flag to this interface, prefer a name that describes
+// a specific behavior (such as 'confineToRoom'), rather than one that describes
+// the situations that call for this behavior ('isEmbedded'). This makes it
+// clearer what each flag means, and helps us avoid coupling Element Call's
+// behavior to the needs of specific consumers.
+export interface UrlParams
+  extends UrlProperties,
+    UrlConfiguration,
+    IntentAndPlatformDerivedConfiguration {}
 
 // This is here as a stopgap, but what would be far nicer is a function that
 // takes a UrlParams and returns a query string. That would enable us to
@@ -235,6 +283,17 @@ class ParamParser {
     return this.fragmentParams.get(name) ?? this.queryParams.get(name);
   }
 
+  public getEnumParam<T extends string>(
+    name: string,
+    type: { [s: string]: T } | ArrayLike<T>,
+  ): T | undefined {
+    const value = this.getParam(name);
+    if (value !== null && Object.values(type).includes(value as T)) {
+      return value as T;
+    }
+    return undefined;
+  }
+
   public getAllParams(name: string): string[] {
     return [
       ...this.fragmentParams.getAll(name),
@@ -242,14 +301,30 @@ class ParamParser {
     ];
   }
 
+  /**
+   * Returns true if the flag exists and is not "false".
+   */
   public getFlagParam(name: string, defaultValue = false): boolean {
     const param = this.getParam(name);
     return param === null ? defaultValue : param !== "false";
   }
+  /**
+   * Returns the value of the flag if it exists, or undefined if it does not.
+   */
+  public getFlag(name: string): boolean | undefined {
+    const param = this.getParam(name);
+    return param !== null ? param !== "false" : undefined;
+  }
 }
 
+let urlParamCache: {
+  search?: string;
+  hash?: string;
+  params?: UrlParams;
+} = {};
+
 /**
- * Gets the app parameters for the current URL.
+ * Gets the url params and loads them from a cache if already computed.
  * @param search The URL search string
  * @param hash The URL hash
  * @returns The app parameters encoded in the URL
@@ -258,45 +333,131 @@ export const getUrlParams = (
   search = window.location.search,
   hash = window.location.hash,
 ): UrlParams => {
+  if (
+    urlParamCache.search === search &&
+    urlParamCache.hash === hash &&
+    urlParamCache.params
+  ) {
+    return urlParamCache.params;
+  }
+  const params = computeUrlParams(search, hash);
+  urlParamCache = { search, hash, params };
+
+  return params;
+};
+
+/**
+ * Gets the app parameters for the current URL.
+ * @param search The URL search string
+ * @param hash The URL hash
+ * @returns The app parameters encoded in the URL
+ */
+export const computeUrlParams = (search = "", hash = ""): UrlParams => {
   const parser = new ParamParser(search, hash);
 
   const fontScale = parseFloat(parser.getParam("fontScale") ?? "");
 
-  let intent = parser.getParam("intent");
-  if (!intent || !Object.values(UserIntent).includes(intent as UserIntent)) {
-    intent = UserIntent.Unknown;
-  }
-
-  // Check hideHeader for backwards compatibility. If header is set, hideHeader
-  // is ignored.
-  const header =
-    parser.getParam("header") ??
-    (parser.getFlagParam("hideHeader")
-      ? HeaderStyle.None
-      : HeaderStyle.Standard);
-
   const widgetId = parser.getParam("widgetId");
   const parentUrl = parser.getParam("parentUrl");
   const isWidget = !!widgetId && !!parentUrl;
 
-  return {
+  /**
+   * The user's intent with respect to the call.
+   * e.g. if they clicked a Start Call button, this would be `start_call`.
+   * If it was a Join Call button, it would be `join_existing`.
+   * This is a platform specific default set of parameters, that allows to minize the configuration
+   * needed to start a call. And empowers the EC codebase to control the platform/intent behavior in
+   * a central place.
+   *
+   * In short: either provide url query parameters of UrlConfiguration or set the intent
+   * (or the global defaults will be used).
+   */
+  const intent = !isWidget
+    ? UserIntent.Unknown
+    : (parser.getEnumParam("intent", UserIntent) ?? UserIntent.Unknown);
+  // Here we only use constants and `platform` to determine the intent preset.
+  let intentPreset: UrlConfiguration = {
+    confineToRoom: true,
+    appPrompt: false,
+    preload: false,
+    header: platform === "desktop" ? HeaderStyle.None : HeaderStyle.AppBar,
+    showControls: true,
+    hideScreensharing: false,
+    allowIceFallback: true,
+    perParticipantE2EE: true,
+    controlledAudioDevices: platform === "desktop" ? false : true,
+    skipLobby: true,
+    returnToLobby: false,
+    sendNotificationType: "notification",
+    autoLeaveWhenOthersLeft: false,
+    waitForCallPickup: false,
+  };
+  switch (intent) {
+    case UserIntent.StartNewCall:
+      intentPreset.skipLobby = false;
+      break;
+    case UserIntent.JoinExistingCall:
+      // On desktop this will be overridden based on which button was used to join the call
+      intentPreset.skipLobby = false;
+      break;
+    case UserIntent.StartNewCallDM:
+      intentPreset.skipLobby = true;
+      intentPreset.sendNotificationType = "ring";
+      intentPreset.autoLeaveWhenOthersLeft = true;
+      intentPreset.waitForCallPickup = true;
+
+      break;
+    case UserIntent.JoinExistingCallDM:
+      // On desktop this will be overridden based on which button was used to join the call
+      intentPreset.skipLobby = true;
+      intentPreset.autoLeaveWhenOthersLeft = true;
+      break;
+    // Non widget usecase defaults
+    default:
+      intentPreset = {
+        confineToRoom: false,
+        appPrompt: true,
+        preload: false,
+        header: HeaderStyle.Standard,
+        showControls: true,
+        hideScreensharing: false,
+        allowIceFallback: false,
+        perParticipantE2EE: false,
+        controlledAudioDevices: false,
+        skipLobby: false,
+        returnToLobby: false,
+        sendNotificationType: undefined,
+        autoLeaveWhenOthersLeft: false,
+        waitForCallPickup: false,
+      };
+  }
+
+  const intentAndPlatformDerivedConfiguration: IntentAndPlatformDerivedConfiguration =
+    {};
+  // Desktop also includes web. Its anything that is not mobile.
+  const desktopMobile = platform === "desktop" ? "desktop" : "mobile";
+  switch (desktopMobile) {
+    case "desktop":
+    case "mobile":
+      switch (intent) {
+        case UserIntent.StartNewCall:
+        case UserIntent.JoinExistingCall:
+        case UserIntent.StartNewCallDM:
+        case UserIntent.JoinExistingCallDM:
+          intentAndPlatformDerivedConfiguration.defaultAudioEnabled = true;
+          intentAndPlatformDerivedConfiguration.defaultVideoEnabled = true;
+          break;
+      }
+  }
+
+  const properties: UrlProperties = {
     widgetId,
     parentUrl,
-
     // NB. we don't validate roomId here as we do in getRoomIdentifierFromUrl:
     // what would we do if it were invalid? If the widget API says that's what
     // the room ID is, then that's what it is.
     roomId: parser.getParam("roomId"),
     password: parser.getParam("password"),
-    // This flag has 'embed' as an alias for historical reasons
-    confineToRoom:
-      parser.getFlagParam("confineToRoom") || parser.getFlagParam("embed"),
-    appPrompt: parser.getFlagParam("appPrompt", true),
-    preload: isWidget ? parser.getFlagParam("preload") : false,
-    header: header as HeaderStyle,
-    showControls: parser.getFlagParam("showControls", true),
-    hideScreensharing: parser.getFlagParam("hideScreensharing"),
-    e2eEnabled: parser.getFlagParam("enableE2EE", true),
     userId: isWidget ? parser.getParam("userId") : null,
     displayName: parser.getParam("displayName"),
     deviceId: isWidget ? parser.getParam("deviceId") : null,
@@ -304,24 +465,9 @@ export const getUrlParams = (
     lang: parser.getParam("lang"),
     fonts: parser.getAllParams("font"),
     fontScale: Number.isNaN(fontScale) ? null : fontScale,
-    allowIceFallback: parser.getFlagParam("allowIceFallback"),
-    perParticipantE2EE: parser.getFlagParam("perParticipantE2EE"),
-    controlledAudioDevices: parser.getFlagParam(
-      "controlledAudioDevices",
-      // the deprecated property name
-      parser.getFlagParam("controlledMediaDevices"),
-    ),
-    skipLobby: parser.getFlagParam(
-      "skipLobby",
-      isWidget && intent === UserIntent.StartNewCall,
-    ),
-    // In SPA mode the user should always exit to the home screen when hanging
-    // up, rather than being sent back to the lobby
-    returnToLobby: isWidget ? parser.getFlagParam("returnToLobby") : false,
     theme: parser.getParam("theme"),
     viaServers: !isWidget ? parser.getParam("viaServers") : null,
     homeserver: !isWidget ? parser.getParam("homeserver") : null,
-    intent,
     posthogApiHost: parser.getParam("posthogApiHost"),
     posthogApiKey: parser.getParam("posthogApiKey"),
     posthogUserId:
@@ -329,6 +475,52 @@ export const getUrlParams = (
     rageshakeSubmitUrl: parser.getParam("rageshakeSubmitUrl"),
     sentryDsn: parser.getParam("sentryDsn"),
     sentryEnvironment: parser.getParam("sentryEnvironment"),
+    e2eEnabled: parser.getFlagParam("enableE2EE", true),
+  };
+
+  const configuration: Partial<UrlConfiguration> = {
+    confineToRoom: parser.getFlag("confineToRoom"),
+    appPrompt: parser.getFlag("appPrompt"),
+    preload: isWidget ? parser.getFlag("preload") : undefined,
+    // Check hideHeader for backwards compatibility. If header is set, hideHeader
+    // is ignored.
+    header: parser.getEnumParam("header", HeaderStyle),
+    showControls: parser.getFlag("showControls"),
+    hideScreensharing: parser.getFlag("hideScreensharing"),
+    allowIceFallback: parser.getFlag("allowIceFallback"),
+    perParticipantE2EE: parser.getFlag("perParticipantE2EE"),
+    controlledAudioDevices: parser.getFlag("controlledAudioDevices"),
+    skipLobby: isWidget ? parser.getFlag("skipLobby") : false,
+    // In SPA mode the user should always exit to the home screen when hanging
+    // up, rather than being sent back to the lobby
+    returnToLobby: isWidget ? parser.getFlag("returnToLobby") : false,
+    sendNotificationType: parser.getEnumParam("sendNotificationType", [
+      "ring",
+      "notification",
+    ]),
+    waitForCallPickup: parser.getFlag("waitForCallPickup"),
+    autoLeaveWhenOthersLeft: parser.getFlag("autoLeave"),
+  };
+
+  // Log the final configuration for debugging purposes.
+  // This will only log when the cache is not yet set.
+  logger.info(
+    "UrlParams: final set of url params\n",
+    "intent:",
+    intent,
+    "\nproperties:",
+    properties,
+    "configuration:",
+    configuration,
+    "intentAndPlatformDerivedConfiguration:",
+    intentAndPlatformDerivedConfiguration,
+  );
+
+  return {
+    ...properties,
+    ...intentPreset,
+    ...pickBy(configuration, (v?: unknown) => v !== undefined),
+    ...intentAndPlatformDerivedConfiguration,
   };
 };
 
@@ -387,10 +579,16 @@ export function getRoomIdentifierFromUrl(
 
   // Make sure roomId is valid
   let roomId: string | null = parser.getParam("roomId");
-  if (!roomId?.startsWith("!")) {
-    roomId = null;
-  } else if (!roomId.includes("")) {
-    roomId = null;
+  if (roomId !== null) {
+    // Replace any non-printable characters that another client may have inserted.
+    // For instance on iOS, some copied links end up with zero width characters on the end which get encoded into the URL.
+    // This isn't valid for a roomId, so we can freely strip the content.
+    roomId = roomId.replaceAll(/^[^ -~]+|[^ -~]+$/g, "");
+    if (!roomId.startsWith("!")) {
+      roomId = null;
+    } else if (!roomId.includes("")) {
+      roomId = null;
+    }
   }
 
   return {

src/__snapshots__/AppBar.test.tsx.snap

@@ -32,7 +32,7 @@ exports[`AppBar > renders 1`] = `
               xmlns="http://www.w3.org/2000/svg"
             >
               <path
-                d="M12.207 5.293a1 1 0 0 1 0 1.414L7.914 11H18.5a1 1 0 1 1 0 2H7.914l4.293 4.293a1 1 0 0 1-1.414 1.414l-6-6a1 1 0 0 1 0-1.414l6-6a1 1 0 0 1 1.414 0"
+                d="M12 11.034a1 1 0 0 0 .29.702l.005.005c.18.18.43.29.705.29h8a1 1 0 0 0 0-2h-5.586L22 3.445a1 1 0 0 0-1.414-1.414L14 8.617V3.031a1 1 0 1 0-2 0zm0 1.963a1 1 0 0 0-.29-.702l-.005-.004A1 1 0 0 0 11 12H3a1 1 0 1 0 0 2h5.586L2 20.586A1 1 0 1 0 3.414 22L10 15.414V21a1 1 0 0 0 2 0z"
               />
             </svg>
           </div>

src/button/Button.tsx

@@ -16,7 +16,6 @@ import {
   EndCallIcon,
   ShareScreenSolidIcon,
   SettingsSolidIcon,
-  SwitchCameraSolidIcon,
 } from "@vector-im/compound-design-tokens/assets/web/icons";
 
 import styles from "./Button.module.css";
@@ -67,23 +66,6 @@ export const VideoButton: FC<VideoButtonProps> = ({ muted, ...props }) => {
   );
 };
 
-export const SwitchCameraButton: FC<ComponentPropsWithoutRef<"button">> = (
-  props,
-) => {
-  const { t } = useTranslation();
-
-  return (
-    <Tooltip label={t("switch_camera")}>
-      <CpdButton
-        iconOnly
-        Icon={SwitchCameraSolidIcon}
-        kind="secondary"
-        {...props}
-      />
-    </Tooltip>
-  );
-};
-
 interface ShareScreenButtonProps extends ComponentPropsWithoutRef<"button"> {
   enabled: boolean;
 }

src/button/__snapshots__/ReactionToggleButton.test.tsx.snap

@@ -9,7 +9,7 @@ exports[`Can close reaction dialog 1`] = `
     aria-disabled="false"
     aria-expanded="true"
     aria-haspopup="true"
-    aria-labelledby="«rb5»"
+    aria-labelledby="«rbb»"
     class="_button_vczzf_8 _has-icon_vczzf_57 _icon-only_vczzf_50"
     data-kind="primary"
     data-size="lg"

src/config/ConfigOptions.ts

@@ -114,24 +114,29 @@ export interface ConfigOptions {
      * when someone leaves a call.
      */
     wait_for_key_rotation_ms?: number;
-    /** @deprecated use wait_for_key_rotation_ms instead */
-    key_rotation_on_leave_delay?: number;
 
     /**
      * The duration (in milliseconds) after the most recent keep-alive (delayed leave event restart)
      * that the server waits before sending the leave MatrixRTC membership event.
      */
     delayed_leave_event_delay_ms?: number;
-    /** @deprecated use delayed_leave_event_delay_ms instead */
-    membership_server_side_expiry_timeout?: number;
+
+    /**
+     * The time (in milliseconds) after which a we consider a delayed event restart http request to have failed.
+     * Setting this to a lower value will result in more frequent retries but also a higher chance of failiour.
+     *
+     * In the presence of network packet loss (hurting TCP connections), the custom delayedEventRestartLocalTimeoutMs
+     * helps by keeping more delayed event reset candidates in flight,
+     * improving the chances of a successful reset. (its is equivalent to the js-sdk `localTimeout` configuration,
+     * but only applies to calls to the `_unstable_updateDelayedEvent` endpoint with a body of `{action:"restart"}`.)
+     */
+    delayed_leave_event_restart_local_timeout_ms?: number;
 
     /**
      * The time interval (in milliseconds) at which the client sends membership keep-alive
      * messages to the server by restarting the timer for the delayed leave event.
      */
     delayed_leave_event_restart_ms?: number;
-    /** @deprecated use delayed_leave_event_restart_ms instead */
-    membership_keep_alive_period?: number;
 
     /**
      * How long we wait before retrying after a network error on any of the requests.

src/controls.ts

@@ -6,9 +6,7 @@ Please see LICENSE in the repository root for full details.
 */
 
 import { Subject } from "rxjs";
-import { logger as rootLogger } from "matrix-js-sdk/lib/logger";
-
-const logger = rootLogger.getChild("[controlled-output]");
+import { logger } from "matrix-js-sdk/lib/logger";
 
 export interface Controls {
   canEnterPip(): boolean;

src/grid/TileWrapper.tsx

@@ -61,7 +61,12 @@ const TileWrapper_ = memo(
     useDrag((state) => onDrag?.current!(id, state), {
       target: ref,
       filterTaps: true,
-      preventScroll: true,
+      // Previous designs, which allowed tiles to be dragged and dropped around
+      // the scrolling grid, required us to set preventScroll to true here. But
+      // our designs no longer call for this, and meanwhile there's a bug in
+      // use-gesture that causes filterTaps + preventScroll to break buttons
+      // within tiles (like the 'switch camera' button) on mobile.
+      // https://github.com/pmndrs/use-gesture/issues/593
     });
 
     return (

src/icons/FullScreenMaximise.svg

@@ -0,0 +1,6 @@
+<svg width="24" height="24" fill="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+<path d="M4 14C4.55228 14 5 14.4477 5 15V19H9C9.55228 19 10 19.4477 10 20C10 20.5523 9.55228 21 9 21H3V15C3 14.4477 3.44772 14 4 14Z"/>
+<path d="M20 14C20.5523 14 21 14.4477 21 15V21H15C14.4477 21 14 20.5523 14 20C14 19.4477 14.4477 19 15 19H19V15C19 14.4477 19.4477 14 20 14Z" />
+<path d="M9 3C9.55228 3 10 3.44772 10 4C10 4.55228 9.55228 5 9 5H5V9C5 9.55228 4.55228 10 4 10C3.44772 10 3 9.55228 3 9V3H9Z" />
+<path d="M21 9C21 9.55228 20.5523 10 20 10C19.4477 10 19 9.55228 19 9V5H15C14.4477 5 14 4.55228 14 4C14 3.44772 14.4477 3 15 3H21V9Z" />
+</svg>

src/icons/FullScreenMinimise.svg

@@ -0,0 +1,6 @@
+<svg width="24" height="24" fill="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+<path d="M10 20C10 20.5523 9.55228 21 9 21C8.44772 21 8 20.5523 8 20V16H4C3.44772 16 3 15.5523 3 15C3 14.4477 3.44772 14 4 14H10V20Z" />
+<path d="M20 14C20.5523 14 21 14.4477 21 15C21 15.5523 20.5523 16 20 16H16V20C16 20.5523 15.5523 21 15 21C14.4477 21 14 20.5523 14 20V14H20Z" />
+<path d="M9 3C9.55228 3 10 3.44772 10 4V10H4C3.44772 10 3 9.55228 3 9C3 8.44772 3.44772 8 4 8H8V4C8 3.44772 8.44772 3 9 3Z" />
+<path d="M15 3C15.5523 3 16 3.44772 16 4V8H20C20.5523 8 21 8.44772 21 9C21 9.55228 20.5523 10 20 10H14V4C14 3.44772 14.4477 3 15 3Z" />
+</svg>

src/livekit/BlurBackgroundTransformer.ts

@@ -1,7 +1,7 @@
 /*
 Copyright 2024-2025 New Vector Ltd.
 
-SPDX-License-Identifier: AGPL-3.0-only
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE in the repository root for full details.
 */
 

src/livekit/MatrixAudioRenderer.tsx

@@ -14,13 +14,12 @@ import {
   type AudioTrackProps,
 } from "@livekit/components-react";
 import { type CallMembership } from "matrix-js-sdk/lib/matrixrtc";
-import { logger as rootLogger } from "matrix-js-sdk/lib/logger";
+import { logger } from "matrix-js-sdk/lib/logger";
 
 import { useEarpieceAudioConfig } from "../MediaDevicesContext";
 import { useReactiveState } from "../useReactiveState";
 import * as controls from "../controls";
 
-const logger = rootLogger.getChild("[MatrixAudioRenderer]");
 export interface MatrixAudioRendererProps {
   /**
    * The list of participants to render audio for.
@@ -72,7 +71,7 @@ export function MatrixAudioRenderer({
   const logInvalid = (identity: string, validIdentities: Set<string>): void => {
     if (loggedInvalidIdentities.current.has(identity)) return;
     logger.warn(
-      `Audio track ${identity} has no matching matrix call member`,
+      `[MatrixAudioRenderer] Audio track ${identity} has no matching matrix call member`,
       `current members: ${Array.from(validIdentities.values())}`,
       `track will not get rendered`,
     );
@@ -102,7 +101,7 @@ export function MatrixAudioRenderer({
   useEffect(() => {
     if (!tracks.some((t) => !validIdentities.has(t.participant.identity))) {
       logger.debug(
-        `All audio tracks have a matching matrix call member identity.`,
+        `[MatrixAudioRenderer] All audio tracks have a matching matrix call member identity.`,
       );
       loggedInvalidIdentities.current.clear();
     }
@@ -182,7 +181,7 @@ interface StereoPanAudioTrackProps {
 /**
  * This wraps `livekit.AudioTrack` to allow adding audio nodes to a track.
  * It main purpose is to remount the AudioTrack component when switching from
- * audiooContext to normal audio playback.
+ * audioContext to normal audio playback.
  * As of now the AudioTrack component does not support adding audio nodes while being mounted.
  * @param param0
  * @returns
@@ -202,7 +201,7 @@ function AudioTrackWithAudioNodes({
   const [trackReady, setTrackReady] = useReactiveState(
     () => false,
     // We only want the track to reset once both (audioNodes and audioContext) are set.
-    // for unsetting the audioContext its enough if one of the the is undefined.
+    // for unsetting the audioContext its enough if one of the two is undefined.
     [audioContext && audioNodes],
   );
 

src/livekit/TrackProcessorContext.tsx

@@ -1,7 +1,7 @@
 /*
-Copyright 2024 New Vector Ltd.
+Copyright 2024-2025 New Vector Ltd.
 
-SPDX-License-Identifier: AGPL-3.0-only
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE in the repository root for full details.
 */
 

src/livekit/useECConnectionState.test.tsx

@@ -15,7 +15,7 @@ import {
 import userEvent from "@testing-library/user-event";
 import { render, screen } from "@testing-library/react";
 import { MemoryRouter } from "react-router-dom";
-import { defer, sleep } from "matrix-js-sdk/lib/utils";
+import { sleep } from "matrix-js-sdk/lib/utils";
 
 import { useECConnectionState } from "./useECConnectionState";
 import { type SFUConfig } from "./openIDSFU";
@@ -93,8 +93,8 @@ describe("Leaking connection prevention", () => {
 
   test("Should cancel pending connections when the component is unmounted", async () => {
     const connectCall = vi.fn();
-    const pendingConnection = defer<void>();
-    // let pendingDisconnection = defer<void>()
+    const pendingConnection = Promise.withResolvers<void>();
+    // let pendingDisconnection = Promise.withResolvers<void>()
     const disconnectMock = vi.fn();
 
     const mockRoom = {
@@ -141,8 +141,8 @@ describe("Leaking connection prevention", () => {
 
   test("Should cancel about to open but not yet opened connection", async () => {
     const createTracksCall = vi.fn();
-    const pendingCreateTrack = defer<void>();
-    // let pendingDisconnection = defer<void>()
+    const pendingCreateTrack = Promise.withResolvers<void>();
+    // let pendingDisconnection = Promise.withResolvers<void>()
     const disconnectMock = vi.fn();
     const connectMock = vi.fn();
 

src/livekit/useECConnectionState.ts

@@ -22,17 +22,11 @@ import { PosthogAnalytics } from "../analytics/PosthogAnalytics";
 import {
   ElementCallError,
   InsufficientCapacityError,
+  SFURoomCreationRestrictedError,
   UnknownCallError,
 } from "../utils/errors.ts";
 import { AbortHandle } from "../utils/abortHandle.ts";
 
-declare global {
-  interface Window {
-    peerConnectionTimeout?: number;
-    websocketTimeout?: number;
-  }
-}
-
 /*
  * Additional values for states that a call can be in, beyond what livekit
  * provides in ConnectionState. Also reconnects the call if the SFU Config
@@ -169,12 +163,7 @@ async function connectAndPublish(
 
   try {
     logger.info(`[Lifecycle] Connecting to livekit room ${sfuConfig!.url} ...`);
-    await livekitRoom!.connect(sfuConfig!.url, sfuConfig!.jwt, {
-      // Due to stability issues on Firefox we are testing the effect of different
-      // timeouts, and allow these values to be set through the console
-      peerConnectionTimeout: window.peerConnectionTimeout ?? 45000,
-      websocketTimeout: window.websocketTimeout ?? 45000,
-    });
+    await livekitRoom!.connect(sfuConfig!.url, sfuConfig!.jwt);
     logger.info(`[Lifecycle] ... connected to livekit room`);
   } catch (e) {
     logger.error("[Lifecycle] Failed to connect", e);
@@ -184,11 +173,19 @@ async function connectAndPublish(
     // participant limits.
     // LiveKit Cloud uses 429 for connection limits.
     // Either way, all these errors can be explained as "insufficient capacity".
-    if (
-      e instanceof ConnectionError &&
-      (e.status === 503 || e.status === 200 || e.status === 429)
-    )
-      throw new InsufficientCapacityError();
+    if (e instanceof ConnectionError) {
+      if (e.status === 503 || e.status === 200 || e.status === 429) {
+        throw new InsufficientCapacityError();
+      }
+      if (e.status === 404) {
+        // error msg is "Could not establish signal connection: requested room does not exist"
+        // The room does not exist. There are two different modes of operation for the SFU:
+        // - the room is created on the fly when connecting (livekit `auto_create` option)
+        // - Only authorized users can create rooms, so the room must exist before connecting (done by the auth jwt service)
+        // In the first case there will not be a 404, so we are in the second case.
+        throw new SFURoomCreationRestrictedError();
+      }
+    }
     throw e;
   }
 

src/livekit/useLivekit.ts

@@ -9,6 +9,7 @@ import {
   ConnectionState,
   type E2EEManagerOptions,
   ExternalE2EEKeyProvider,
+  type LocalTrackPublication,
   LocalVideoTrack,
   Room,
   type RoomOptions,
@@ -181,6 +182,33 @@ export function useLivekit(
     sfuConfig,
   );
 
+  // Log errors when local participant has issues publishing a track.
+  useEffect(() => {
+    const localTrackUnpublishedFn = (
+      publication: LocalTrackPublication,
+    ): void => {
+      logger.info(
+        "Local track unpublished",
+        publication.trackName,
+        publication.trackInfo,
+      );
+    };
+    const mediaDevicesErrorFn = (error: Error): void => {
+      logger.warn("Media devices error when publishing a track", error);
+    };
+
+    room.localParticipant.on("localTrackUnpublished", localTrackUnpublishedFn);
+    room.localParticipant.on("mediaDevicesError", mediaDevicesErrorFn);
+
+    return (): void => {
+      room.localParticipant.off(
+        "localTrackUnpublished",
+        localTrackUnpublishedFn,
+      );
+      room.localParticipant.off("mediaDevicesError", mediaDevicesErrorFn);
+    };
+  }, [room.localParticipant]);
+
   useEffect(() => {
     // Sync the requested mute states with LiveKit's mute states. We do it this
     // way around rather than using LiveKit as the source of truth, so that the

src/reactions/RaisedHandIndicator.tsx

@@ -22,11 +22,13 @@ export function RaisedHandIndicator({
   miniature,
   showTimer,
   onClick,
+  tabIndex,
 }: {
   raisedHandTime?: Date;
   miniature?: boolean;
   showTimer?: boolean;
   onClick?: () => void;
+  tabIndex?: number;
 }): ReactNode {
   const { t } = useTranslation();
   const [raisedHandDuration, setRaisedHandDuration] = useState("");
@@ -94,6 +96,7 @@ export function RaisedHandIndicator({
           background: "none",
         }}
         onClick={clickCallback}
+        tabIndex={tabIndex}
       >
         {content}
       </button>

src/reactions/index.ts

@@ -27,6 +27,8 @@ import rockSoundOgg from "../sound/reactions/rock.ogg?url";
 import rockSoundMp3 from "../sound/reactions/rock.mp3?url";
 import waveSoundOgg from "../sound/reactions/wave.ogg?url";
 import waveSoundMp3 from "../sound/reactions/wave.mp3?url";
+import baduntssSoundOgg from "../sound/reactions/baduntss.ogg?url";
+import baduntssSoundMp3 from "../sound/reactions/baduntss.mp3?url";
 
 export const ElementCallReactionEventType = "io.element.call.reaction";
 
@@ -191,6 +193,15 @@ export const ReactionSet: ReactionOption[] = [
       mp3: waveSoundMp3,
     },
   },
+  {
+    emoji: "🥁",
+    name: "drum",
+    alias: ["joke"],
+    sound: {
+      ogg: baduntssSoundOgg,
+      mp3: baduntssSoundMp3,
+    },
+  },
 ];
 
 export interface RaisedHandInfo {

src/room/CallEventAudioRenderer.test.tsx

@@ -19,10 +19,7 @@ import { act } from "react";
 import { type CallMembership } from "matrix-js-sdk/lib/matrixrtc";
 
 import { mockRtcMembership } from "../utils/test";
-import {
-  CallEventAudioRenderer,
-  MAX_PARTICIPANT_COUNT_FOR_SOUND,
-} from "./CallEventAudioRenderer";
+import { CallEventAudioRenderer } from "./CallEventAudioRenderer";
 import { useAudioContext } from "../useAudioContext";
 import { prefetchSounds } from "../soundUtils";
 import { getBasicCallViewModelEnvironment } from "../utils/test-viewmodel";
@@ -31,7 +28,9 @@ import {
   aliceRtcMember,
   bobRtcMember,
   local,
+  localRtcMember,
 } from "../utils/test-fixtures";
+import { MAX_PARTICIPANT_COUNT_FOR_SOUND } from "../state/CallViewModel";
 
 vitest.mock("../useAudioContext");
 vitest.mock("../soundUtils");
@@ -55,6 +54,8 @@ beforeEach(() => {
   playSound = vitest.fn();
   (useAudioContext as MockedFunction<typeof useAudioContext>).mockReturnValue({
     playSound,
+    playSoundLooping: vitest.fn(),
+    soundDuration: {},
   });
 });
 
@@ -66,7 +67,7 @@ beforeEach(() => {
  * a noise every time.
  */
 test("plays one sound when entering a call", () => {
-  const { vm, remoteRtcMemberships$ } = getBasicCallViewModelEnvironment([
+  const { vm, rtcMemberships$ } = getBasicCallViewModelEnvironment([
     local,
     alice,
   ]);
@@ -74,56 +75,72 @@ test("plays one sound when entering a call", () => {
 
   // Joining a call usually means remote participants are added later.
   act(() => {
-    remoteRtcMemberships$.next([aliceRtcMember, bobRtcMember]);
+    rtcMemberships$.next([localRtcMember, aliceRtcMember, bobRtcMember]);
   });
   expect(playSound).toHaveBeenCalledOnce();
 });
 
 test("plays a sound when a user joins", () => {
-  const { vm, remoteRtcMemberships$ } = getBasicCallViewModelEnvironment([
+  const { vm, rtcMemberships$ } = getBasicCallViewModelEnvironment([
     local,
     alice,
   ]);
   render(<CallEventAudioRenderer vm={vm} />);
 
   act(() => {
-    remoteRtcMemberships$.next([aliceRtcMember, bobRtcMember]);
+    rtcMemberships$.next([localRtcMember, aliceRtcMember, bobRtcMember]);
   });
   // Play a sound when joining a call.
   expect(playSound).toBeCalledWith("join");
 });
 
 test("plays a sound when a user leaves", () => {
-  const { vm, remoteRtcMemberships$ } = getBasicCallViewModelEnvironment([
+  const { vm, rtcMemberships$ } = getBasicCallViewModelEnvironment([
     local,
     alice,
   ]);
   render(<CallEventAudioRenderer vm={vm} />);
 
   act(() => {
-    remoteRtcMemberships$.next([]);
+    rtcMemberships$.next([localRtcMember]);
   });
   expect(playSound).toBeCalledWith("left");
 });
 
+test("does not play a sound before the call is successful", () => {
+  const { vm, rtcMemberships$ } = getBasicCallViewModelEnvironment(
+    [local, alice],
+    [localRtcMember],
+    { waitForCallPickup: true },
+  );
+  render(<CallEventAudioRenderer vm={vm} />);
+
+  act(() => {
+    rtcMemberships$.next([localRtcMember]);
+  });
+  expect(playSound).not.toBeCalledWith("left");
+});
+
 test("plays no sound when the participant list is more than the maximum size", () => {
-  const mockRtcMemberships: CallMembership[] = [];
+  const mockRtcMemberships: CallMembership[] = [localRtcMember];
   for (let i = 0; i < MAX_PARTICIPANT_COUNT_FOR_SOUND; i++) {
     mockRtcMemberships.push(
       mockRtcMembership(`@user${i}:example.org`, `DEVICE${i}`),
     );
   }
 
-  const { vm, remoteRtcMemberships$ } = getBasicCallViewModelEnvironment(
+  const { vm, rtcMemberships$ } = getBasicCallViewModelEnvironment(
     [local, alice],
     mockRtcMemberships,
   );
 
   render(<CallEventAudioRenderer vm={vm} />);
   expect(playSound).not.toBeCalled();
+  // Remove the last membership in the array to test the leaving sound
+  // (The array has length MAX_PARTICIPANT_COUNT_FOR_SOUND + 1)
   act(() => {
-    remoteRtcMemberships$.next(
-      mockRtcMemberships.slice(0, MAX_PARTICIPANT_COUNT_FOR_SOUND - 1),
+    rtcMemberships$.next(
+      mockRtcMemberships.slice(0, MAX_PARTICIPANT_COUNT_FOR_SOUND),
     );
   });
   expect(playSound).toBeCalledWith("left");
@@ -155,6 +172,7 @@ test("should not play a sound when a hand raise is retracted", () => {
   ]);
   render(<CallEventAudioRenderer vm={vm} />);
 
+  playSound.mockClear();
   act(() => {
     handRaisedSubject$.next({
       ["foo"]: {
@@ -169,7 +187,7 @@ test("should not play a sound when a hand raise is retracted", () => {
       },
     });
   });
-  expect(playSound).toHaveBeenCalledTimes(2);
+  expect(playSound).toHaveBeenCalledExactlyOnceWith("raiseHand");
   act(() => {
     handRaisedSubject$.next({
       ["foo"]: {
@@ -179,5 +197,5 @@ test("should not play a sound when a hand raise is retracted", () => {
       },
     });
   });
-  expect(playSound).toHaveBeenCalledTimes(2);
+  expect(playSound).toHaveBeenCalledExactlyOnceWith("raiseHand");
 });

src/room/CallEventAudioRenderer.tsx

@@ -6,7 +6,6 @@ Please see LICENSE in the repository root for full details.
 */
 
 import { type ReactNode, useEffect } from "react";
-import { filter, interval, throttle } from "rxjs";
 
 import { type CallViewModel } from "../state/CallViewModel";
 import joinCallSoundMp3 from "../sound/join_call.mp3";
@@ -17,15 +16,14 @@ import handSoundOgg from "../sound/raise_hand.ogg";
 import handSoundMp3 from "../sound/raise_hand.mp3";
 import screenShareStartedOgg from "../sound/screen_share_started.ogg";
 import screenShareStartedMp3 from "../sound/screen_share_started.mp3";
+import declineMp3 from "../sound/call_declined.mp3?url";
+import declineOgg from "../sound/call_declined.ogg?url";
+import timeoutMp3 from "../sound/call_timeout.mp3?url";
+import timeoutOgg from "../sound/call_timeout.ogg?url";
 import { useAudioContext } from "../useAudioContext";
 import { prefetchSounds } from "../soundUtils";
 import { useLatest } from "../useLatest";
 
-// Do not play any sounds if the participant count has exceeded this
-// number.
-export const MAX_PARTICIPANT_COUNT_FOR_SOUND = 8;
-export const THROTTLE_SOUND_EFFECT_MS = 500;
-
 export const callEventAudioSounds = prefetchSounds({
   join: {
     mp3: joinCallSoundMp3,
@@ -43,8 +41,18 @@ export const callEventAudioSounds = prefetchSounds({
     mp3: screenShareStartedMp3,
     ogg: screenShareStartedOgg,
   },
+  decline: {
+    mp3: declineMp3,
+    ogg: declineOgg,
+  },
+  timeout: {
+    mp3: timeoutMp3,
+    ogg: timeoutOgg,
+  },
 });
 
+export type CallEventSounds = keyof Awaited<typeof callEventAudioSounds>;
+
 export function CallEventAudioRenderer({
   vm,
   muted,
@@ -60,37 +68,18 @@ export function CallEventAudioRenderer({
   const audioEngineRef = useLatest(audioEngineCtx);
 
   useEffect(() => {
-    const joinSub = vm.memberChanges$
-      .pipe(
-        filter(
-          ({ joined, ids }) =>
-            ids.length <= MAX_PARTICIPANT_COUNT_FOR_SOUND && joined.length > 0,
-        ),
-        throttle(() => interval(THROTTLE_SOUND_EFFECT_MS)),
-      )
-      .subscribe(() => {
-        void audioEngineRef.current?.playSound("join");
-      });
-
-    const leftSub = vm.memberChanges$
-      .pipe(
-        filter(
-          ({ ids, left }) =>
-            ids.length <= MAX_PARTICIPANT_COUNT_FOR_SOUND && left.length > 0,
-        ),
-        throttle(() => interval(THROTTLE_SOUND_EFFECT_MS)),
-      )
-      .subscribe(() => {
-        void audioEngineRef.current?.playSound("left");
-      });
-
-    const handRaisedSub = vm.newHandRaised$.subscribe(() => {
-      void audioEngineRef.current?.playSound("raiseHand");
-    });
-
-    const screenshareSub = vm.newScreenShare$.subscribe(() => {
-      void audioEngineRef.current?.playSound("screenshareStarted");
-    });
+    const joinSub = vm.joinSoundEffect$.subscribe(
+      () => void audioEngineRef.current?.playSound("join"),
+    );
+    const leftSub = vm.leaveSoundEffect$.subscribe(
+      () => void audioEngineRef.current?.playSound("left"),
+    );
+    const handRaisedSub = vm.newHandRaised$.subscribe(
+      () => void audioEngineRef.current?.playSound("raiseHand"),
+    );
+    const screenshareSub = vm.newScreenShare$.subscribe(
+      () => void audioEngineRef.current?.playSound("screenshareStarted"),
+    );
 
     return (): void => {
       joinSub.unsubscribe();

src/room/EarpieceOverlay.module.css

@@ -34,7 +34,6 @@
 
 .overlay[data-show="false"] {
   animation: fade-out 130ms forwards;
-  content-visibility: hidden;
   pointer-events: none;
 }
 
@@ -61,3 +60,7 @@
 .overlay > p {
   text-align: center;
 }
+
+.spacer {
+  min-height: var(--cpd-space-32x);
+}

src/room/EarpieceOverlay.tsx

@@ -7,7 +7,7 @@ Please see LICENSE in the repository root for full details.
 
 import { type FC } from "react";
 import { BigIcon, Button, Heading, Text } from "@vector-im/compound-web";
-import { EarpieceIcon } from "@vector-im/compound-design-tokens/assets/web/icons";
+import { VoiceCallIcon } from "@vector-im/compound-design-tokens/assets/web/icons";
 import { useTranslation } from "react-i18next";
 
 import styles from "./EarpieceOverlay.module.css";
@@ -20,14 +20,14 @@ interface Props {
 export const EarpieceOverlay: FC<Props> = ({ show, onBackToVideoPressed }) => {
   const { t } = useTranslation();
   return (
-    <div className={styles.overlay} data-show={show}>
+    <div className={styles.overlay} data-show={show} aria-hidden={!show}>
       <BigIcon className={styles.icon}>
-        <EarpieceIcon aria-hidden />
+        <VoiceCallIcon aria-hidden />
       </BigIcon>
       <Heading as="h2" weight="semibold" size="md">
-        {t("earpiece.overlay_title")}
+        {t("handset.overlay_title")}
       </Heading>
-      <Text>{t("earpiece.overlay_description")}</Text>
+      <Text>{t("handset.overlay_description")}</Text>
       <Button
         kind="primary"
         size="sm"
@@ -35,8 +35,10 @@ export const EarpieceOverlay: FC<Props> = ({ show, onBackToVideoPressed }) => {
           onBackToVideoPressed?.();
         }}
       >
-        {t("earpiece.overlay_back_button")}
+        {t("handset.overlay_back_button")}
       </Button>
+      {/* This spacer is used to give the overlay an offset to the top. */}
+      <div className={styles.spacer} />
     </div>
   );
 };

src/room/GroupCallErrorBoundary.test.tsx

@@ -132,9 +132,10 @@ test("ConnectionLostError: Action handling should reset error state", async () =
   const WrapComponent = (): ReactNode => {
     const [failState, setFailState] = useState(true);
     const reconnectCallback = useCallback(
-      (action: CallErrorRecoveryAction) => {
+      async (action: CallErrorRecoveryAction) => {
         reconnectCallbackSpy(action);
         setFailState(false);
+        return Promise.resolve();
       },
       [setFailState],
     );

src/room/GroupCallErrorBoundary.tsx

@@ -21,6 +21,7 @@ import {
   OfflineIcon,
   WebBrowserIcon,
 } from "@vector-im/compound-design-tokens/assets/web/icons";
+import { Button } from "@vector-im/compound-web";
 
 import {
   ConnectionLostError,
@@ -35,7 +36,9 @@ import { type WidgetHelpers } from "../widget.ts";
 
 export type CallErrorRecoveryAction = "reconnect"; // | "retry" ;
 
-export type RecoveryActionHandler = (action: CallErrorRecoveryAction) => void;
+export type RecoveryActionHandler = (
+  action: CallErrorRecoveryAction,
+) => Promise<void>;
 
 interface ErrorPageProps {
   error: ElementCallError;
@@ -70,7 +73,7 @@ const ErrorPage: FC<ErrorPageProps> = ({
   if (error instanceof ConnectionLostError) {
     actions.push({
       label: t("call_ended_view.reconnect_button"),
-      onClick: () => recoveryActionHandler("reconnect"),
+      onClick: () => void recoveryActionHandler("reconnect"),
     });
   }
 
@@ -93,9 +96,13 @@ const ErrorPage: FC<ErrorPageProps> = ({
         </p>
         {actions &&
           actions.map((action, index) => (
-            <button onClick={action.onClick} key={`action${index}`}>
+            <Button
+              kind="secondary"
+              onClick={action.onClick}
+              key={`action${index}`}
+            >
               {action.label}
-            </button>
+            </Button>
           ))}
       </ErrorView>
     </FullScreenView>
@@ -126,9 +133,9 @@ export const GroupCallErrorBoundary = ({
           widget={widget ?? null}
           error={callError}
           resetError={resetError}
-          recoveryActionHandler={(action: CallErrorRecoveryAction) => {
+          recoveryActionHandler={async (action: CallErrorRecoveryAction) => {
+            await recoveryActionHandler(action);
             resetError();
-            recoveryActionHandler(action);
           }}
         />
       );

src/room/GroupCallView.test.tsx

@@ -12,10 +12,14 @@ import {
   onTestFinished,
   test,
   vi,
+  vitest,
 } from "vitest";
-import { render, waitFor, screen } from "@testing-library/react";
+import { render, waitFor, screen, act } from "@testing-library/react";
 import { type MatrixClient, JoinRule, type RoomState } from "matrix-js-sdk";
-import { type MatrixRTCSession } from "matrix-js-sdk/lib/matrixrtc";
+import {
+  MatrixRTCSessionEvent,
+  type MatrixRTCSession,
+} from "matrix-js-sdk/lib/matrixrtc";
 import { BrowserRouter } from "react-router-dom";
 import userEvent from "@testing-library/user-event";
 import { type RelationsContainer } from "matrix-js-sdk/lib/models/relations-container";
@@ -94,13 +98,15 @@ beforeEach(() => {
   playSound = vi.fn();
   (useAudioContext as MockedFunction<typeof useAudioContext>).mockReturnValue({
     playSound,
+    playSoundLooping: vi.fn(),
+    soundDuration: {},
   });
   // A trivial implementation of Active call to ensure we are testing GroupCallView exclusively here.
   (ActiveCall as MockedFunction<typeof ActiveCall>).mockImplementation(
     ({ onLeave }) => {
       return (
         <div>
-          <button onClick={() => onLeave()}>Leave</button>
+          <button onClick={() => onLeave("user")}>Leave</button>
         </div>
       );
     },
@@ -137,11 +143,9 @@ function createGroupCallView(
       getJoinRule: () => JoinRule.Invite,
     } as Partial<RoomState> as RoomState,
   });
-  const rtcSession = new MockRTCSession(
-    room,
-    localRtcMember,
-    [],
-  ).withMemberships(constant([]));
+  const rtcSession = new MockRTCSession(room, []).withMemberships(
+    constant([localRtcMember]),
+  );
   rtcSession.joined = joined;
   const muteState = {
     audio: { enabled: false },
@@ -208,6 +212,8 @@ test("GroupCallView plays a leave sound synchronously in widget mode", async ()
     );
   (useAudioContext as MockedFunction<typeof useAudioContext>).mockReturnValue({
     playSound,
+    playSoundLooping: vitest.fn(),
+    soundDuration: {},
   });
 
   const { getByText, rtcSession } = createGroupCallView(
@@ -260,3 +266,19 @@ test("GroupCallView shows errors that occur during joining", async () => {
   await user.click(screen.getByRole("button", { name: "Join call" }));
   screen.getByText("Call is not supported");
 });
+
+test("user can reconnect after a membership manager error", async () => {
+  const user = userEvent.setup();
+  const { rtcSession } = createGroupCallView(null, true);
+  await act(() =>
+    rtcSession.emit(MatrixRTCSessionEvent.MembershipManagerError, undefined),
+  );
+  // XXX: Wrapping the following click in act() shouldn't be necessary (the
+  // async state update should be processed automatically by the waitFor call),
+  // and yet here we are.
+  await act(async () =>
+    user.click(screen.getByRole("button", { name: "Reconnect" })),
+  );
+  // In-call controls should be visible again
+  await waitFor(() => screen.getByRole("button", { name: "Leave" }));
+});

src/room/GroupCallView.tsx

@@ -50,10 +50,13 @@ import { useRoomAvatar } from "./useRoomAvatar";
 import { useRoomName } from "./useRoomName";
 import { useJoinRule } from "./useJoinRule";
 import { InviteModal } from "./InviteModal";
-import { HeaderStyle, useUrlParams } from "../UrlParams";
+import { HeaderStyle, type UrlParams, useUrlParams } from "../UrlParams";
 import { E2eeType } from "../e2ee/e2eeType";
 import { useAudioContext } from "../useAudioContext";
-import { callEventAudioSounds } from "./CallEventAudioRenderer";
+import {
+  callEventAudioSounds,
+  type CallEventSounds,
+} from "./CallEventAudioRenderer";
 import { useLatest } from "../useLatest";
 import { usePageTitle } from "../usePageTitle";
 import {
@@ -83,8 +86,8 @@ interface Props {
   client: MatrixClient;
   isPasswordlessUser: boolean;
   confineToRoom: boolean;
-  preload: boolean;
-  skipLobby: boolean;
+  preload: UrlParams["preload"];
+  skipLobby: UrlParams["skipLobby"];
   header: HeaderStyle;
   rtcSession: MatrixRTCSession;
   isJoined: boolean;
@@ -166,7 +169,11 @@ export const GroupCallView: FC<Props> = ({
   const { displayName, avatarUrl } = useProfile(client);
   const roomName = useRoomName(room);
   const roomAvatar = useRoomAvatar(room);
-  const { perParticipantE2EE, returnToLobby } = useUrlParams();
+  const {
+    perParticipantE2EE,
+    returnToLobby,
+    password: passwordFromUrl,
+  } = useUrlParams();
   const e2eeSystem = useRoomEncryptionSystem(room.roomId);
   const [useNewMembershipManager] = useSetting(useNewMembershipManagerSetting);
   const [useExperimentalToDeviceTransport] = useSetting(
@@ -174,7 +181,6 @@ export const GroupCallView: FC<Props> = ({
   );
 
   // Save the password once we start the groupCallView
-  const { password: passwordFromUrl } = useUrlParams();
   useEffect(() => {
     if (passwordFromUrl) saveKeyForRoom(room.roomId, passwordFromUrl);
   }, [passwordFromUrl, room.roomId]);
@@ -273,34 +279,28 @@ export const GroupCallView: FC<Props> = ({
     };
 
     if (skipLobby) {
-      if (widget) {
-        if (preload) {
-          // In preload mode without lobby we wait for a join action before entering
-          const onJoin = (ev: CustomEvent<IWidgetApiRequest>): void => {
-            (async (): Promise<void> => {
-              await defaultDeviceSetup(
-                ev.detail.data as unknown as JoinCallData,
-              );
-              await enterRTCSessionOrError(rtcSession);
-              widget.api.transport.reply(ev.detail, {});
-            })().catch((e) => {
-              logger.error("Error joining RTC session", e);
-            });
-          };
-          widget.lazyActions.on(ElementWidgetActions.JoinCall, onJoin);
-          return (): void => {
-            widget.lazyActions.off(ElementWidgetActions.JoinCall, onJoin);
-          };
-        } else {
-          // No lobby and no preload: we enter the rtc session right away
+      if (widget && preload) {
+        // In preload mode without lobby we wait for a join action before entering
+        const onJoin = (ev: CustomEvent<IWidgetApiRequest>): void => {
           (async (): Promise<void> => {
+            await defaultDeviceSetup(ev.detail.data as unknown as JoinCallData);
             await enterRTCSessionOrError(rtcSession);
+            widget.api.transport.reply(ev.detail, {});
           })().catch((e) => {
-            logger.error("Error joining RTC session", e);
+            logger.error("Error joining RTC session on preload", e);
           });
-        }
+        };
+        widget.lazyActions.on(ElementWidgetActions.JoinCall, onJoin);
+        return (): void => {
+          widget.lazyActions.off(ElementWidgetActions.JoinCall, onJoin);
+        };
       } else {
-        void enterRTCSessionOrError(rtcSession);
+        // No lobby and no preload: we enter the rtc session right away
+        (async (): Promise<void> => {
+          await enterRTCSessionOrError(rtcSession);
+        })().catch((e) => {
+          logger.error("Error joining RTC session immediately", e);
+        });
       }
     }
   }, [
@@ -320,8 +320,11 @@ export const GroupCallView: FC<Props> = ({
   const navigate = useNavigate();
 
   const onLeave = useCallback(
-    (cause: "user" | "error" = "user"): void => {
-      const audioPromise = leaveSoundContext.current?.playSound("left");
+    (
+      cause: "user" | "error" = "user",
+      playSound: CallEventSounds = "left",
+    ): void => {
+      const audioPromise = leaveSoundContext.current?.playSound(playSound);
       // In embedded/widget mode the iFrame will be killed right after the call ended prohibiting the posthog event from getting sent,
       // therefore we want the event to be sent instantly without getting queued/batched.
       const sendInstantly = !!widget;
@@ -449,7 +452,7 @@ export const GroupCallView: FC<Props> = ({
           client={client}
           matrixInfo={matrixInfo}
           rtcSession={rtcSession as MatrixRTCSession}
-          participantCount={participantCount}
+          matrixRoom={room}
           onLeave={onLeave}
           header={header}
           muteStates={muteStates}
@@ -491,6 +494,7 @@ export const GroupCallView: FC<Props> = ({
     // Left in widget mode:
     body = returnToLobby ? lobbyView : null;
   } else if (preload || skipLobby) {
+    // The RTC session is not joined to yet (`isJoined`), but enterRTCSessionOrError should have been called.
     body = null;
   } else {
     body = lobbyView;
@@ -499,10 +503,11 @@ export const GroupCallView: FC<Props> = ({
   return (
     <GroupCallErrorBoundary
       widget={widget}
-      recoveryActionHandler={(action) => {
+      recoveryActionHandler={async (action) => {
+        setExternalError(null);
         if (action == "reconnect") {
           setLeft(false);
-          enterRTCSessionOrError(rtcSession).catch((e) => {
+          await enterRTCSessionOrError(rtcSession).catch((e) => {
             logger.error("Error re-entering RTC session", e);
           });
         }

src/room/InCallView.module.css

@@ -108,14 +108,6 @@ Please see LICENSE in the repository root for full details.
 }
 
 @media (max-width: 370px) {
-  .raiseHand {
-    display: none;
-  }
-}
-
-@media (max-width: 340px) {
-  .invite,
-  .switchCamera,
   .shareScreen {
     display: none;
   }
@@ -127,6 +119,13 @@ Please see LICENSE in the repository root for full details.
   }
 }
 
+@media (max-width: 320px) {
+  .invite,
+  .raiseHand {
+    display: none;
+  }
+}
+
 @media (max-height: 400px) {
   .footer {
     padding-block: var(--cpd-space-4x);

src/room/InCallView.test.tsx

@@ -17,7 +17,7 @@ import { act, render, type RenderResult } from "@testing-library/react";
 import { type MatrixClient, JoinRule, type RoomState } from "matrix-js-sdk";
 import { type MatrixRTCSession } from "matrix-js-sdk/lib/matrixrtc";
 import { type RelationsContainer } from "matrix-js-sdk/lib/models/relations-container";
-import { ConnectionState, type LocalParticipant } from "livekit-client";
+import { type LocalParticipant } from "livekit-client";
 import { of } from "rxjs";
 import { BrowserRouter } from "react-router-dom";
 import { TooltipProvider } from "@vector-im/compound-web";
@@ -175,12 +175,11 @@ function createInCallView(): RenderResult & {
                     kind: E2eeType.NONE,
                   },
                 }}
+                matrixRoom={room}
                 livekitRoom={livekitRoom}
-                participantCount={0}
                 onLeave={function (): void {
                   throw new Error("Function not implemented.");
                 }}
-                connState={ConnectionState.Connected}
                 onShareClick={null}
               />
             </RoomContext>

src/room/InCallView.tsx

@@ -7,8 +7,8 @@ Please see LICENSE in the repository root for full details.
 
 import { RoomContext, useLocalParticipant } from "@livekit/components-react";
 import { IconButton, Text, Tooltip } from "@vector-im/compound-web";
-import { ConnectionState, type Room } from "livekit-client";
-import { type MatrixClient } from "matrix-js-sdk";
+import { ConnectionState, type Room as LivekitRoom } from "livekit-client";
+import { type MatrixClient, type Room as MatrixRoom } from "matrix-js-sdk";
 import {
   type FC,
   type PointerEvent,
@@ -25,11 +25,15 @@ import useMeasure from "react-use-measure";
 import { type MatrixRTCSession } from "matrix-js-sdk/lib/matrixrtc";
 import classNames from "classnames";
 import { BehaviorSubject, map } from "rxjs";
-import { useObservable } from "observable-hooks";
+import {
+  useObservable,
+  useObservableEagerState,
+  useSubscription,
+} from "observable-hooks";
 import { logger } from "matrix-js-sdk/lib/logger";
 import { RoomAndToDeviceEvents } from "matrix-js-sdk/lib/matrixrtc/RoomAndToDeviceKeyTransport";
 import {
-  EarpieceIcon,
+  VoiceCallSolidIcon,
   VolumeOnSolidIcon,
 } from "@vector-im/compound-design-tokens/assets/web/icons";
 import { useTranslation } from "react-i18next";
@@ -44,7 +48,6 @@ import {
   ShareScreenButton,
   SettingsButton,
   ReactionToggleButton,
-  SwitchCameraButton,
 } from "../button";
 import { Header, LeftNav, RightNav, RoomHeaderInfo } from "../Header";
 import { type HeaderStyle, useUrlParams } from "../UrlParams";
@@ -63,7 +66,6 @@ import { type MuteStates } from "./MuteStates";
 import { type MatrixInfo } from "./VideoPreview";
 import { InviteButton } from "../button/InviteButton";
 import { LayoutToggle } from "./LayoutToggle";
-import { type ECConnectionState } from "../livekit/useECConnectionState";
 import { useOpenIDSFU } from "../livekit/openIDSFU";
 import {
   CallViewModel,
@@ -94,9 +96,11 @@ import {
   useReactionsSender,
 } from "../reactions/useReactionsSender";
 import { ReactionsAudioRenderer } from "./ReactionAudioRenderer";
-import { useSwitchCamera } from "./useSwitchCamera";
 import { ReactionsOverlay } from "./ReactionsOverlay";
-import { CallEventAudioRenderer } from "./CallEventAudioRenderer";
+import {
+  CallEventAudioRenderer,
+  type CallEventSounds,
+} from "./CallEventAudioRenderer";
 import {
   debugTileLayout as debugTileLayoutSetting,
   useExperimentalToDeviceTransport as useExperimentalToDeviceTransportSetting,
@@ -113,6 +117,14 @@ import { useMediaDevices } from "../MediaDevicesContext.ts";
 import { EarpieceOverlay } from "./EarpieceOverlay.tsx";
 import { useAppBarHidden, useAppBarSecondaryButton } from "../AppBar.tsx";
 import { useBehavior } from "../useBehavior.ts";
+import { Toast } from "../Toast.tsx";
+import overlayStyles from "../Overlay.module.css";
+import { Avatar, Size as AvatarSize } from "../Avatar";
+import waitingStyles from "./WaitingForJoin.module.css";
+import { prefetchSounds } from "../soundUtils";
+import { useAudioContext } from "../useAudioContext";
+import ringtoneMp3 from "../sound/ringtone.mp3?url";
+import ringtoneOgg from "../sound/ringtone.ogg?url";
 
 const canScreenshare = "getDisplayMedia" in (navigator.mediaDevices ?? {});
 
@@ -140,17 +152,17 @@ export const ActiveCall: FC<ActiveCallProps> = (props) => {
 
   useEffect(() => {
     logger.info(
-      `[Lifecycle] InCallView Component mounted, livekitroom state ${livekitRoom?.state}`,
+      `[Lifecycle] InCallView Component mounted, livekit room state ${livekitRoom?.state}`,
     );
     return (): void => {
       logger.info(
-        `[Lifecycle] InCallView Component unmounted, livekitroom state ${livekitRoom?.state}`,
+        `[Lifecycle] InCallView Component unmounted, livekit room state ${livekitRoom?.state}`,
       );
       livekitRoom
         ?.disconnect()
         .then(() => {
           logger.info(
-            `[Lifecycle] Disconnected from livekite room, state:${livekitRoom?.state}`,
+            `[Lifecycle] Disconnected from livekit room, state:${livekitRoom?.state}`,
           );
         })
         .catch((e) => {
@@ -159,14 +171,23 @@ export const ActiveCall: FC<ActiveCallProps> = (props) => {
     };
   }, [livekitRoom]);
 
+  const { autoLeaveWhenOthersLeft, sendNotificationType, waitForCallPickup } =
+    useUrlParams();
+
   useEffect(() => {
     if (livekitRoom !== undefined) {
       const reactionsReader = new ReactionsReader(props.rtcSession);
       const vm = new CallViewModel(
         props.rtcSession,
+        props.matrixRoom,
         livekitRoom,
         mediaDevices,
-        props.e2eeSystem,
+        {
+          encryptionSystem: props.e2eeSystem,
+          autoLeaveWhenOthersLeft,
+          waitForCallPickup:
+            waitForCallPickup && sendNotificationType === "ring",
+        },
         connStateObservable$,
         reactionsReader.raisedHands$,
         reactionsReader.reactions$,
@@ -179,10 +200,14 @@ export const ActiveCall: FC<ActiveCallProps> = (props) => {
     }
   }, [
     props.rtcSession,
+    props.matrixRoom,
     livekitRoom,
     mediaDevices,
     props.e2eeSystem,
     connStateObservable$,
+    autoLeaveWhenOthersLeft,
+    sendNotificationType,
+    waitForCallPickup,
   ]);
 
   if (livekitRoom === undefined || vm === null) return null;
@@ -190,12 +215,7 @@ export const ActiveCall: FC<ActiveCallProps> = (props) => {
   return (
     <RoomContext value={livekitRoom}>
       <ReactionsSenderProvider vm={vm} rtcSession={props.rtcSession}>
-        <InCallView
-          {...props}
-          vm={vm}
-          livekitRoom={livekitRoom}
-          connState={connState}
-        />
+        <InCallView {...props} vm={vm} livekitRoom={livekitRoom} />
       </ReactionsSenderProvider>
     </RoomContext>
   );
@@ -206,14 +226,13 @@ export interface InCallViewProps {
   vm: CallViewModel;
   matrixInfo: MatrixInfo;
   rtcSession: MatrixRTCSession;
-  livekitRoom: Room;
+  matrixRoom: MatrixRoom;
+  livekitRoom: LivekitRoom;
   muteStates: MuteStates;
-  participantCount: number;
   /** Function to call when the user explicitly ends the call */
-  onLeave: () => void;
+  onLeave: (cause: "user", soundFile?: CallEventSounds) => void;
   header: HeaderStyle;
   otelGroupCallMembership?: OTelGroupCallMembership;
-  connState: ECConnectionState;
   onShareClick: (() => void) | null;
 }
 
@@ -222,12 +241,11 @@ export const InCallView: FC<InCallViewProps> = ({
   vm,
   matrixInfo,
   rtcSession,
+  matrixRoom,
   livekitRoom,
   muteStates,
-  participantCount,
   onLeave,
   header: headerStyle,
-  connState,
   onShareClick,
 }) => {
   const { t } = useTranslation();
@@ -235,10 +253,11 @@ export const InCallView: FC<InCallViewProps> = ({
     useReactionsSender();
 
   useWakeLock();
+  const connectionState = useObservableEagerState(vm.livekitConnectionState$);
 
   // annoyingly we don't get the disconnection reason this way,
   // only by listening for the emitted event
-  if (connState === ConnectionState.Disconnected)
+  if (connectionState === ConnectionState.Disconnected)
     throw new ConnectionLostError();
 
   const containerRef1 = useRef<HTMLDivElement | null>(null);
@@ -253,6 +272,21 @@ export const InCallView: FC<InCallViewProps> = ({
   });
 
   const muteAllAudio = useBehavior(muteAllAudio$);
+  // Call pickup state and display names are needed for waiting overlay/sounds
+  const callPickupState = useBehavior(vm.callPickupState$);
+
+  // Preload a waiting and decline sounds
+  const pickupPhaseSoundCache = useInitial(async () => {
+    return prefetchSounds({
+      waiting: { mp3: ringtoneMp3, ogg: ringtoneOgg },
+    });
+  });
+
+  const pickupPhaseAudio = useAudioContext({
+    sounds: pickupPhaseSoundCache,
+    latencyHint: "interactive",
+    muted: muteAllAudio,
+  });
 
   // This seems like it might be enough logic to use move it into the call view model?
   const [didFallbackToRoomKey, setDidFallbackToRoomKey] = useState(false);
@@ -266,7 +300,7 @@ export const InCallView: FC<InCallViewProps> = ({
   const [useExperimentalToDeviceTransport] = useSetting(
     useExperimentalToDeviceTransportSetting,
   );
-  const encryptionSystem = useRoomEncryptionSystem(rtcSession.room.roomId);
+  const encryptionSystem = useRoomEncryptionSystem(matrixRoom.roomId);
   const memberships = useMatrixRTCSessionMemberships(rtcSession);
 
   const showToDeviceEncryption = useMemo(
@@ -303,6 +337,8 @@ export const InCallView: FC<InCallViewProps> = ({
     () => void toggleRaisedHand(),
   );
 
+  const participantCount = useBehavior(vm.participantCount$);
+  const reconnecting = useBehavior(vm.reconnecting$);
   const windowMode = useBehavior(vm.windowMode$);
   const layout = useBehavior(vm.layout$);
   const tileStoreGeneration = useBehavior(vm.tileStoreGeneration$);
@@ -312,7 +348,90 @@ export const InCallView: FC<InCallViewProps> = ({
   const showFooter = useBehavior(vm.showFooter$);
   const earpieceMode = useBehavior(vm.earpieceMode$);
   const audioOutputSwitcher = useBehavior(vm.audioOutputSwitcher$);
-  const switchCamera = useSwitchCamera(vm.localVideo$);
+  useSubscription(vm.autoLeave$, () => onLeave("user"));
+
+  // We need to set the proper timings on the animation based upon the sound length.
+  const ringDuration = pickupPhaseAudio?.soundDuration["waiting"] ?? 1;
+  useEffect((): (() => void) => {
+    // The CSS animation includes the delay, so we must double the length of the sound.
+    window.document.body.style.setProperty(
+      "--call-ring-duration-s",
+      `${ringDuration * 2}s`,
+    );
+    window.document.body.style.setProperty(
+      "--call-ring-delay-s",
+      `${ringDuration}s`,
+    );
+    // Remove properties when we unload.
+    return () => {
+      window.document.body.style.removeProperty("--call-ring-duration-s");
+      window.document.body.style.removeProperty("--call-ring-delay-s");
+    };
+  }, [pickupPhaseAudio?.soundDuration, ringDuration]);
+
+  // When we enter timeout or decline we will leave the call.
+  useEffect((): void | (() => void) => {
+    if (callPickupState === "timeout") {
+      onLeave("user", "timeout");
+    }
+    if (callPickupState === "decline") {
+      onLeave("user", "decline");
+    }
+  }, [callPickupState, onLeave, pickupPhaseAudio]);
+
+  // When waiting for pickup, loop a waiting sound
+  useEffect((): void | (() => void) => {
+    if (callPickupState !== "ringing" || !pickupPhaseAudio) return;
+    const endSound = pickupPhaseAudio.playSoundLooping("waiting", ringDuration);
+    return () => {
+      void endSound().catch((e) => {
+        logger.error("Failed to stop ringing sound", e);
+      });
+    };
+  }, [callPickupState, pickupPhaseAudio, ringDuration]);
+
+  // Waiting UI overlay
+  const waitingOverlay: JSX.Element | null = useMemo(() => {
+    // No overlay if not in ringing state
+    if (callPickupState !== "ringing") return null;
+
+    // Use room state for other participants data (the one that we likely want to reach)
+    const roomOthers = [
+      ...matrixRoom.getMembersWithMembership("join"),
+      ...matrixRoom.getMembersWithMembership("invite"),
+    ].filter((m) => m.userId !== client.getUserId());
+    // Yield if there are not other members in the room.
+    if (roomOthers.length === 0) return null;
+
+    const otherMember = roomOthers.length > 0 ? roomOthers[0] : undefined;
+    const isOneOnOne = roomOthers.length === 1 && otherMember;
+    const text = isOneOnOne
+      ? `Waiting for ${otherMember.name ?? otherMember.userId} to join…`
+      : "Waiting for other participants…";
+    const avatarMxc = isOneOnOne
+      ? (otherMember.getMxcAvatarUrl?.() ?? undefined)
+      : (matrixRoom.getMxcAvatarUrl() ?? undefined);
+
+    return (
+      <div className={classNames(overlayStyles.bg, waitingStyles.overlay)}>
+        <div
+          className={classNames(overlayStyles.content, waitingStyles.content)}
+        >
+          <div className={waitingStyles.pulse}>
+            <Avatar
+              id={isOneOnOne ? otherMember.userId : matrixRoom.roomId}
+              name={isOneOnOne ? otherMember.name : matrixRoom.name}
+              src={avatarMxc}
+              size={AvatarSize.XL}
+            />
+          </div>
+          <Text size="md" className={waitingStyles.text}>
+            {text}
+          </Text>
+        </div>
+      </div>
+    );
+  }, [callPickupState, client, matrixRoom]);
 
   // Ideally we could detect taps by listening for click events and checking
   // that the pointerType of the event is "touch", but this isn't yet supported
@@ -458,9 +577,9 @@ export const InCallView: FC<InCallViewProps> = ({
     useMemo(() => {
       if (audioOutputSwitcher === null) return null;
       const isEarpieceTarget = audioOutputSwitcher.targetOutput === "earpiece";
-      const Icon = isEarpieceTarget ? EarpieceIcon : VolumeOnSolidIcon;
+      const Icon = isEarpieceTarget ? VoiceCallSolidIcon : VolumeOnSolidIcon;
       const label = isEarpieceTarget
-        ? t("settings.devices.earpiece")
+        ? t("settings.devices.handset")
         : t("settings.devices.loudspeaker");
 
       return (
@@ -495,7 +614,11 @@ export const InCallView: FC<InCallViewProps> = ({
         break;
       case "standard":
         header = (
-          <Header className={styles.header} ref={headerRef}>
+          <Header
+            className={styles.header}
+            ref={headerRef}
+            disconnectedBanner={false} // This screen has its own 'reconnecting' toast
+          >
             <LeftNav>
               <RoomHeaderInfo
                 id={matrixInfo.roomId}
@@ -518,6 +641,38 @@ export const InCallView: FC<InCallViewProps> = ({
     }
   }
 
+  // The reconnecting toast cannot be dismissed
+  const onDismissReconnectingToast = useCallback(() => {}, []);
+  // We need to use a non-modal toast to avoid trapping focus within the toast.
+  // However, a non-modal toast will not render any background overlay on its
+  // own, so we must render one manually.
+  const reconnectingToast = (
+    <>
+      <div
+        className={classNames(overlayStyles.bg, overlayStyles.animate)}
+        data-state={reconnecting ? "open" : "closed"}
+      />
+      <Toast
+        onDismiss={onDismissReconnectingToast}
+        open={reconnecting}
+        modal={false}
+      >
+        {t("common.reconnecting")}
+      </Toast>
+    </>
+  );
+
+  const earpieceOverlay = (
+    <EarpieceOverlay
+      show={earpieceMode && !reconnecting}
+      onBackToVideoPressed={audioOutputSwitcher?.switch}
+    />
+  );
+
+  // If the reconnecting toast or earpiece overlay obscures the media tiles, we
+  // need to remove them from the accessibility tree and block focus.
+  const contentObscured = reconnecting || earpieceMode;
+
   const Tile = useMemo(
     () =>
       function Tile({
@@ -547,6 +702,7 @@ export const InCallView: FC<InCallViewProps> = ({
             className={classNames(className, styles.tile)}
             style={style}
             showSpeakingIndicators={showSpeakingIndicatorsValue}
+            focusable={!contentObscured}
           />
         ) : (
           <SpotlightTile
@@ -557,12 +713,13 @@ export const InCallView: FC<InCallViewProps> = ({
             targetWidth={targetWidth}
             targetHeight={targetHeight}
             showIndicators={showSpotlightIndicatorsValue}
+            focusable={!contentObscured}
             className={classNames(className, styles.tile)}
             style={style}
           />
         );
       },
-    [vm, openProfile],
+    [vm, openProfile, contentObscured],
   );
 
   const layouts = useMemo(() => {
@@ -591,6 +748,8 @@ export const InCallView: FC<InCallViewProps> = ({
           targetWidth={gridBounds.height}
           targetHeight={gridBounds.width}
           showIndicators={false}
+          focusable={!contentObscured}
+          aria-hidden={contentObscured}
         />
       );
     }
@@ -608,6 +767,7 @@ export const InCallView: FC<InCallViewProps> = ({
         model={layout}
         Layout={layers.fixed}
         Tile={Tile}
+        aria-hidden={contentObscured}
       />
     );
     const scrollingGrid = (
@@ -617,6 +777,7 @@ export const InCallView: FC<InCallViewProps> = ({
         model={layout}
         Layout={layers.scrolling}
         Tile={Tile}
+        aria-hidden={contentObscured}
       />
     );
     // The grid tiles go *under* the spotlight in the portrait layout, but
@@ -635,7 +796,7 @@ export const InCallView: FC<InCallViewProps> = ({
   };
 
   const rageshakeRequestModalProps = useRageshakeRequestModal(
-    rtcSession.room.roomId,
+    matrixRoom.roomId,
   );
 
   const toggleScreensharing = useCallback(() => {
@@ -669,15 +830,6 @@ export const InCallView: FC<InCallViewProps> = ({
       data-testid="incall_videomute"
     />,
   );
-  if (switchCamera !== null)
-    buttons.push(
-      <SwitchCameraButton
-        key="switch_camera"
-        className={styles.switchCamera}
-        onClick={switchCamera}
-        onTouchEnd={onControlsTouchEnd}
-      />,
-    );
   if (canScreenshare && !hideScreensharing) {
     buttons.push(
       <ShareScreenButton
@@ -714,7 +866,7 @@ export const InCallView: FC<InCallViewProps> = ({
     <EndCallButton
       key="end_call"
       onClick={function (): void {
-        onLeave();
+        onLeave("user");
       }}
       onTouchEnd={onControlsTouchEnd}
       data-testid="incall_leave"
@@ -782,18 +934,17 @@ export const InCallView: FC<InCallViewProps> = ({
       {renderContent()}
       <CallEventAudioRenderer vm={vm} muted={muteAllAudio} />
       <ReactionsAudioRenderer vm={vm} muted={muteAllAudio} />
-      <EarpieceOverlay
-        show={earpieceMode}
-        onBackToVideoPressed={audioOutputSwitcher?.switch}
-      />
+      {reconnectingToast}
+      {earpieceOverlay}
       <ReactionsOverlay vm={vm} />
+      {waitingOverlay}
       {footer}
       {layout.type !== "pip" && (
         <>
           <RageshakeRequestModal {...rageshakeRequestModalProps} />
           <SettingsModal
             client={client}
-            roomId={rtcSession.room.roomId}
+            roomId={matrixRoom.roomId}
             open={settingsModalOpen}
             onDismiss={closeSettings}
             tab={settingsTab}

src/room/LobbyView.tsx

@@ -24,8 +24,7 @@ import {
   type LocalVideoTrack,
   Track,
 } from "livekit-client";
-import { useObservable, useObservableEagerState } from "observable-hooks";
-import { map } from "rxjs";
+import { useObservableEagerState } from "observable-hooks";
 import { useNavigate } from "react-router-dom";
 
 import inCallStyles from "./InCallView.module.css";
@@ -38,7 +37,6 @@ import {
   EndCallButton,
   MicButton,
   SettingsButton,
-  SwitchCameraButton,
   VideoButton,
 } from "../button/Button";
 import { SettingsModal, defaultSettingsTab } from "../settings/SettingsModal";
@@ -47,7 +45,6 @@ import { E2eeType } from "../e2ee/e2eeType";
 import { Link } from "../button/Link";
 import { useMediaDevices } from "../MediaDevicesContext";
 import { useInitial } from "../useInitial";
-import { useSwitchCamera as useShowSwitchCamera } from "./useSwitchCamera";
 import {
   useTrackProcessor,
   useTrackProcessorSync,
@@ -195,12 +192,6 @@ export const LobbyView: FC<Props> = ({
   }, [devices, videoInputId, videoTrack]);
 
   useTrackProcessorSync(videoTrack);
-  const showSwitchCamera = useShowSwitchCamera(
-    useObservable(
-      (inputs$) => inputs$.pipe(map(([video]) => video)),
-      [videoTrack],
-    ),
-  );
 
   // TODO: Unify this component with InCallView, so we can get slick joining
   // animations and don't have to feel bad about reusing its CSS
@@ -257,9 +248,6 @@ export const LobbyView: FC<Props> = ({
               onClick={onVideoPress}
               disabled={muteStates.video.setEnabled === null}
             />
-            {showSwitchCamera && (
-              <SwitchCameraButton onClick={showSwitchCamera} />
-            )}
             <SettingsButton onClick={openSettings} />
             {!confineToRoom && <EndCallButton onClick={onLeaveClick} />}
           </div>

src/room/MuteStates.test.tsx

@@ -8,6 +8,7 @@ Please see LICENSE in the repository root for full details.
 import {
   afterAll,
   afterEach,
+  beforeEach,
   describe,
   expect,
   it,
@@ -26,7 +27,6 @@ import { MediaDevicesContext } from "../MediaDevicesContext";
 import { mockConfig } from "../utils/test";
 import { MediaDevices } from "../state/MediaDevices";
 import { ObservableScope } from "../state/ObservableScope";
-
 vi.mock("@livekit/components-core");
 
 interface TestComponentProps {
@@ -110,9 +110,10 @@ function mockMediaDevices(
   return new MediaDevices(scope);
 }
 
-describe("useMuteStates", () => {
+describe("useMuteStates VITE_PACKAGE='full' (SPA) mode", () => {
   afterEach(() => {
     vi.clearAllMocks();
+    vi.stubEnv("VITE_PACKAGE", "full");
   });
 
   afterAll(() => {
@@ -191,7 +192,11 @@ describe("useMuteStates", () => {
     mockConfig();
 
     render(
-      <MemoryRouter initialEntries={["/room/?skipLobby=true"]}>
+      <MemoryRouter
+        initialEntries={[
+          "/room/?skipLobby=true&widgetId=1234&parentUrl=www.parent.org",
+        ]}
+      >
         <MediaDevicesContext value={mockMediaDevices()}>
           <TestComponent />
         </MediaDevicesContext>
@@ -252,3 +257,67 @@ describe("useMuteStates", () => {
     expect(screen.getByTestId("video-enabled").textContent).toBe("true");
   });
 });
+
+describe("useMuteStates in VITE_PACKAGE='embedded' (widget) mode", () => {
+  beforeEach(() => {
+    vi.stubEnv("VITE_PACKAGE", "embedded");
+  });
+
+  it("uses defaults from config", () => {
+    mockConfig({
+      media_devices: {
+        enable_audio: false,
+        enable_video: false,
+      },
+    });
+
+    render(
+      <MemoryRouter>
+        <MediaDevicesContext value={mockMediaDevices()}>
+          <TestComponent />
+        </MediaDevicesContext>
+      </MemoryRouter>,
+    );
+    expect(screen.getByTestId("audio-enabled").textContent).toBe("false");
+    expect(screen.getByTestId("video-enabled").textContent).toBe("false");
+  });
+
+  it("skipLobby does not mute inputs", () => {
+    mockConfig();
+
+    render(
+      <MemoryRouter
+        initialEntries={[
+          "/room/?skipLobby=true&widgetId=1234&parentUrl=www.parent.org",
+        ]}
+      >
+        <MediaDevicesContext value={mockMediaDevices()}>
+          <TestComponent />
+        </MediaDevicesContext>
+      </MemoryRouter>,
+    );
+    expect(screen.getByTestId("audio-enabled").textContent).toBe("true");
+    expect(screen.getByTestId("video-enabled").textContent).toBe("true");
+  });
+
+  it("url params win over config", () => {
+    // The config sets audio and video to disabled
+    mockConfig({ media_devices: { enable_audio: false, enable_video: false } });
+
+    render(
+      <MemoryRouter
+        initialEntries={[
+          // The Intent sets both audio and video enabled to true via the url param configuration
+          "/room/?intent=start_call_dm&widgetId=1234&parentUrl=www.parent.org",
+        ]}
+      >
+        <MediaDevicesContext value={mockMediaDevices()}>
+          <TestComponent />
+        </MediaDevicesContext>
+      </MemoryRouter>,
+    );
+    // At the end we expect the url param to take precedence, resulting in true
+    expect(screen.getByTestId("audio-enabled").textContent).toBe("true");
+    expect(screen.getByTestId("video-enabled").textContent).toBe("true");
+  });
+});

src/room/MuteStates.ts

@@ -81,11 +81,15 @@ function useMuteState(
 export function useMuteStates(isJoined: boolean): MuteStates {
   const devices = useMediaDevices();
 
-  const { skipLobby } = useUrlParams();
+  const { skipLobby, defaultAudioEnabled, defaultVideoEnabled } =
+    useUrlParams();
 
-  const audio = useMuteState(devices.audioInput, () => {
-    return Config.get().media_devices.enable_audio && !skipLobby && !isJoined;
-  });
+  const audio = useMuteState(
+    devices.audioInput,
+    () =>
+      (defaultAudioEnabled ?? Config.get().media_devices.enable_audio) &&
+      allowJoinUnmuted(skipLobby, isJoined),
+  );
   useEffect(() => {
     // If audio is enabled, we need to request the device names again,
     // because iOS will not be able to switch to the correct device after un-muting.
@@ -97,7 +101,9 @@ export function useMuteStates(isJoined: boolean): MuteStates {
   const isEarpiece = useIsEarpiece();
   const video = useMuteState(
     devices.videoInput,
-    () => Config.get().media_devices.enable_video && !skipLobby && !isJoined,
+    () =>
+      (defaultVideoEnabled ?? Config.get().media_devices.enable_video) &&
+      allowJoinUnmuted(skipLobby, isJoined),
     isEarpiece, // Force video to be unavailable if using earpiece
   );
 
@@ -164,3 +170,9 @@ export function useMuteStates(isJoined: boolean): MuteStates {
 
   return useMemo(() => ({ audio, video }), [audio, video]);
 }
+
+function allowJoinUnmuted(skipLobby: boolean, isJoined: boolean): boolean {
+  return (
+    (!skipLobby && !isJoined) || import.meta.env.VITE_PACKAGE === "embedded"
+  );
+}

src/room/ReactionAudioRenderer.test.tsx

@@ -69,6 +69,8 @@ beforeEach(() => {
   playSound = vitest.fn();
   (useAudioContext as MockedFunction<typeof useAudioContext>).mockReturnValue({
     playSound,
+    playSoundLooping: vitest.fn(),
+    soundDuration: {},
   });
 });
 

src/room/WaitingForJoin.module.css

@@ -0,0 +1,61 @@
+.overlay {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  pointer-events: none;
+}
+
+.content {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 16px;
+}
+
+.pulse {
+  position: relative;
+  height: 90px;
+}
+
+.pulse::before {
+  content: "";
+  position: absolute;
+  inset: -12px;
+  border-radius: 9999px;
+  border: 12px solid rgba(255, 255, 255, 0.6);
+  animation: pulse var(--call-ring-duration-s) ease-out infinite;
+  animation-delay: 1s;
+  opacity: 0;
+}
+
+.text {
+  color: var(--cpd-color-text-on-solid-primary);
+}
+
+@keyframes pulse {
+  0% {
+    transform: scale(0.95);
+    opacity: 0.7;
+    transform: scale(0);
+    opacity: 1;
+  }
+  35% {
+    transform: scale(1.15);
+    opacity: 0.15;
+  }
+  50% {
+    transform: scale(1.2);
+    opacity: 0;
+  }
+  50.01% {
+    transform: scale(0);
+  }
+  85% {
+    transform: scale(0);
+  }
+  100% {
+    transform: scale(0);
+  }
+}

src/room/__snapshots__/GroupCallErrorBoundary.test.tsx.snap

@@ -132,7 +132,13 @@ exports[`ConnectionLostError: Action handling should reset error state 1`] = `
           <p>
             You were disconnected from the call.
           </p>
-          <button>
+          <button
+            class="_button_vczzf_8"
+            data-kind="secondary"
+            data-size="lg"
+            role="button"
+            tabindex="0"
+          >
             Reconnect
           </button>
           <button
@@ -742,7 +748,13 @@ exports[`should report correct error for 'Connection lost' 1`] = `
           <p>
             You were disconnected from the call.
           </p>
-          <button>
+          <button
+            class="_button_vczzf_8"
+            data-kind="secondary"
+            data-size="lg"
+            role="button"
+            tabindex="0"
+          >
             Reconnect
           </button>
           <button

src/room/__snapshots__/InCallView.test.tsx.snap

@@ -49,6 +49,34 @@ exports[`InCallView > rendering > renders 1`] = `
               </svg>
             </span>
           </div>
+          <div
+            class="participantsLine"
+          >
+            <svg
+              aria-label="Participants"
+              fill="currentColor"
+              height="20"
+              viewBox="0 0 24 24"
+              width="20"
+              xmlns="http://www.w3.org/2000/svg"
+            >
+              <path
+                d="M9.175 13.825Q10.35 15 12 15t2.825-1.175T16 11t-1.175-2.825T12 7 9.175 8.175 8 11t1.175 2.825m4.237-1.412A1.93 1.93 0 0 1 12 13q-.825 0-1.412-.588A1.93 1.93 0 0 1 10 11q0-.825.588-1.412A1.93 1.93 0 0 1 12 9q.825 0 1.412.588Q14 10.175 14 11t-.588 1.412"
+              />
+              <path
+                d="M22 12c0 5.523-4.477 10-10 10S2 17.523 2 12 6.477 2 12 2s10 4.477 10 10m-2 0a8 8 0 1 0-16 0 8 8 0 0 0 16 0"
+              />
+              <path
+                d="M16.23 18.792a13 13 0 0 0-1.455-.455 11.6 11.6 0 0 0-5.55 0q-.73.18-1.455.455a8 8 0 0 1-1.729-1.454q1.336-.618 2.709-.95A13.8 13.8 0 0 1 12 16q1.65 0 3.25.387 1.373.333 2.709.95a8 8 0 0 1-1.73 1.455"
+              />
+            </svg>
+            <span
+              class="_typography_6v6n8_153 _font-body-sm-medium_6v6n8_41"
+              data-testid="roomHeader_participants_count"
+            >
+              2
+            </span>
+          </div>
         </div>
       </div>
       <div
@@ -83,6 +111,11 @@ exports[`InCallView > rendering > renders 1`] = `
       <div />
     </div>
     <div
+      class="bg animate"
+      data-state="closed"
+    />
+    <div
+      aria-hidden="true"
       class="overlay"
       data-show="false"
     >
@@ -98,18 +131,30 @@ exports[`InCallView > rendering > renders 1`] = `
           width="1em"
           xmlns="http://www.w3.org/2000/svg"
         >
-          <path
-            d="M14 2c3.93 0 7 3.07 7 7a1 1 0 0 1-2 0c0-2.8-2.2-5-5-5S9 6.2 9 9c0 .93.29 1.98.82 2.94.71 1.29 1.53 1.92 2.32 2.53.92.71 1.88 1.44 2.39 3 .5 1.5 1 2.01 1.71 2.38.2.09.47.15.76.15 1.1 0 2-.9 2-2a1 1 0 1 1 2 0 4 4 0 0 1-5.64 3.65c-1.36-.71-2.13-1.73-2.73-3.55-.32-.98-.9-1.43-1.71-2.05-.87-.67-1.94-1.5-2.85-3.15C7.38 11.65 7 10.26 7 9c0-3.93 3.07-7 7-7"
-          />
-          <path
-            d="M6.145 1.3a1 1 0 0 1 1.427 1.4A8.97 8.97 0 0 0 5 9c0 2.3.862 4.397 2.281 5.988l.291.312.069.077A1 1 0 0 1 6.22 16.77l-.075-.07-.356-.38A10.96 10.96 0 0 1 3 9c0-2.998 1.2-5.717 3.145-7.7M14 6.5a2.5 2.5 0 0 1 0 5 2.501 2.501 0 0 1 0-5"
-          />
+          <g
+            clip-path="url(#a)"
+          >
+            <path
+              clip-rule="evenodd"
+              d="M8.929 15.1a13.6 13.6 0 0 0 4.654 3.066q2.62 1.036 5.492.923h.008l.003-.004.003-.002-.034-3.124-3.52-.483-1.791 1.792-.645-.322a13.5 13.5 0 0 1-3.496-2.52 13.4 13.4 0 0 1-2.52-3.496l-.322-.644 1.792-1.792-.483-3.519-3.123-.034-.003.002-.003.004v.002a13.65 13.65 0 0 0 .932 5.492A13.4 13.4 0 0 0 8.93 15.1m3.92 4.926a15.6 15.6 0 0 1-5.334-3.511 15.4 15.4 0 0 1-3.505-5.346 15.6 15.6 0 0 1-1.069-6.274 1.93 1.93 0 0 1 .589-1.366c.366-.366.84-.589 1.386-.589h.01l3.163.035a1.96 1.96 0 0 1 1.958 1.694v.005l.487 3.545v.003c.043.297.025.605-.076.907a2 2 0 0 1-.485.773l-.762.762a11.4 11.4 0 0 0 3.206 3.54q.457.33.948.614l.762-.761a2 2 0 0 1 .774-.486c.302-.1.61-.118.907-.076l3.553.487a1.96 1.96 0 0 1 1.694 1.958l.034 3.174c0 .546-.223 1.02-.588 1.386-.361.36-.827.582-1.363.588a15.3 15.3 0 0 1-6.29-1.062"
+              fill-rule="evenodd"
+            />
+          </g>
+          <defs>
+            <clippath
+              id="a"
+            >
+              <path
+                d="M0 0h24v24H0z"
+              />
+            </clippath>
+          </defs>
         </svg>
       </div>
       <h2
         class="_typography_6v6n8_153 _font-heading-md-semibold_6v6n8_112"
       >
-        Earpiece Mode
+        Handset Mode
       </h2>
       <p
         class="_typography_6v6n8_153 _font-body-md-regular_6v6n8_50"
@@ -125,6 +170,9 @@ exports[`InCallView > rendering > renders 1`] = `
       >
         Back to Speaker Mode
       </button>
+      <div
+        class="spacer"
+      />
     </div>
     <div
       class="container"
@@ -241,7 +289,7 @@ exports[`InCallView > rendering > renders 1`] = `
       >
         <button
           aria-disabled="false"
-          aria-labelledby="«r5»"
+          aria-labelledby="«r8»"
           class="_button_vczzf_8 _has-icon_vczzf_57 _icon-only_vczzf_50"
           data-kind="primary"
           data-size="lg"
@@ -264,7 +312,7 @@ exports[`InCallView > rendering > renders 1`] = `
         </button>
         <button
           aria-disabled="false"
-          aria-labelledby="«ra»"
+          aria-labelledby="«rd»"
           class="_button_vczzf_8 _has-icon_vczzf_57 _icon-only_vczzf_50"
           data-kind="primary"
           data-size="lg"
@@ -286,7 +334,7 @@ exports[`InCallView > rendering > renders 1`] = `
           </svg>
         </button>
         <button
-          aria-labelledby="«rf»"
+          aria-labelledby="«ri»"
           class="_button_vczzf_8 _has-icon_vczzf_57 _icon-only_vczzf_50"
           data-kind="secondary"
           data-size="lg"
@@ -307,7 +355,7 @@ exports[`InCallView > rendering > renders 1`] = `
           </svg>
         </button>
         <button
-          aria-labelledby="«rk»"
+          aria-labelledby="«rn»"
           class="_button_vczzf_8 endCall _has-icon_vczzf_57 _icon-only_vczzf_50 _destructive_vczzf_107"
           data-kind="primary"
           data-size="lg"
@@ -333,7 +381,7 @@ exports[`InCallView > rendering > renders 1`] = `
         class="toggle layout"
       >
         <input
-          aria-labelledby="«rp»"
+          aria-labelledby="«rs»"
           name="layout"
           type="radio"
           value="spotlight"
@@ -351,7 +399,7 @@ exports[`InCallView > rendering > renders 1`] = `
           />
         </svg>
         <input
-          aria-labelledby="«ru»"
+          aria-labelledby="«r11»"
           checked=""
           name="layout"
           type="radio"

src/room/useSwitchCamera.ts

@@ -1,93 +0,0 @@
-/*
-Copyright 2024 New Vector Ltd.
-
-SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
-Please see LICENSE in the repository root for full details.
-*/
-
-import {
-  fromEvent,
-  map,
-  merge,
-  type Observable,
-  of,
-  startWith,
-  switchMap,
-} from "rxjs";
-import {
-  facingModeFromLocalTrack,
-  type LocalVideoTrack,
-  TrackEvent,
-} from "livekit-client";
-import { useObservable, useObservableEagerState } from "observable-hooks";
-import { logger } from "matrix-js-sdk/lib/logger";
-
-import { useMediaDevices } from "../MediaDevicesContext";
-import { platform } from "../Platform";
-import { useLatest } from "../useLatest";
-
-/**
- * Determines whether the user should be shown a button to switch their camera,
- * producing a callback if so.
- */
-export function useSwitchCamera(
-  video$: Observable<LocalVideoTrack | null>,
-): (() => void) | null {
-  const mediaDevices = useMediaDevices();
-  const setVideoInput = useLatest(mediaDevices.videoInput.select);
-
-  // Produce an observable like the input 'video' observable, except make it
-  // emit whenever the track is muted or the device changes
-  const videoTrack$: Observable<LocalVideoTrack | null> = useObservable(
-    (inputs$) =>
-      inputs$.pipe(
-        switchMap(([video$]) => video$),
-        switchMap((video) => {
-          if (video === null) return of(null);
-          return merge(
-            fromEvent(video, TrackEvent.Restarted).pipe(
-              startWith(null),
-              map(() => video),
-            ),
-            fromEvent(video, TrackEvent.Muted).pipe(map(() => null)),
-          );
-        }),
-      ),
-    [video$],
-  );
-
-  const switchCamera$: Observable<(() => void) | null> = useObservable(
-    (inputs$) =>
-      platform === "desktop"
-        ? of(null)
-        : inputs$.pipe(
-            switchMap(([track$]) => track$),
-            map((track) => {
-              if (track === null) return null;
-              const facingMode = facingModeFromLocalTrack(track).facingMode;
-              // If the camera isn't front or back-facing, don't provide a switch
-              // camera shortcut at all
-              if (facingMode !== "user" && facingMode !== "environment")
-                return null;
-              // Restart the track with a camera facing the opposite direction
-              return (): void =>
-                void track
-                  .restartTrack({
-                    facingMode: facingMode === "user" ? "environment" : "user",
-                  })
-                  .then(() => {
-                    // Inform the MediaDeviceContext which camera was chosen
-                    const deviceId =
-                      track.mediaStreamTrack.getSettings().deviceId;
-                    if (deviceId !== undefined) setVideoInput.current(deviceId);
-                  })
-                  .catch((e) =>
-                    logger.error("Failed to switch camera", facingMode, e),
-                  );
-            }),
-          ),
-    [videoTrack$],
-  );
-
-  return useObservableEagerState(switchCamera$);
-}

src/rtcSessionHelpers.test.ts

@@ -70,6 +70,12 @@ test("It joins the correct Session", async () => {
       roomId: "roomId",
       client: {
         getDomain: vi.fn().mockReturnValue("example.org"),
+        getOpenIdToken: vi.fn().mockResolvedValue({
+          access_token: "ACCCESS_TOKEN",
+          token_type: "Bearer",
+          matrix_server_name: "localhost",
+          expires_in: 10000,
+        }),
       },
     },
     memberships: [],
@@ -195,6 +201,12 @@ test("It should not fail with configuration error if homeserver config has livek
       roomId: "roomId",
       client: {
         getDomain: vi.fn().mockReturnValue("example.org"),
+        getOpenIdToken: vi.fn().mockResolvedValue({
+          access_token: "ACCCESS_TOKEN",
+          token_type: "Bearer",
+          matrix_server_name: "localhost",
+          expires_in: 10000,
+        }),
       },
     },
     memberships: [],

src/rtcSessionHelpers.ts

@@ -5,21 +5,22 @@ SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE in the repository root for full details.
 */
 
-import { type MatrixRTCSession } from "matrix-js-sdk/lib/matrixrtc";
-import { logger } from "matrix-js-sdk/lib/logger";
 import {
   isLivekitFocus,
   isLivekitFocusConfig,
   type LivekitFocus,
   type LivekitFocusActive,
+  type MatrixRTCSession,
 } from "matrix-js-sdk/lib/matrixrtc";
+import { logger } from "matrix-js-sdk/lib/logger";
 import { AutoDiscovery } from "matrix-js-sdk/lib/autodiscovery";
 
 import { PosthogAnalytics } from "./analytics/PosthogAnalytics";
 import { Config } from "./config/Config";
 import { ElementWidgetActions, widget, type WidgetHelpers } from "./widget";
-import { MatrixRTCFocusMissingError } from "./utils/errors.ts";
-import { getUrlParams } from "./UrlParams.ts";
+import { MatrixRTCFocusMissingError } from "./utils/errors";
+import { getUrlParams } from "./UrlParams";
+import { getSFUConfigWithOpenID } from "./livekit/openIDSFU.ts";
 
 const FOCI_WK_KEY = "org.matrix.msc4143.rtc_foci";
 
@@ -46,6 +47,9 @@ async function makePreferredLivekitFoci(
     preferredFoci.push(focusInUse);
   }
 
+  // Warm up the first focus we owned, to ensure livekit room is created before any state event sent.
+  let toWarmUp: LivekitFocus | undefined;
+
   // Prioritize the .well-known/matrix/client, if available, over the configured SFU
   const domain = rtcSession.room.client.getDomain();
   if (domain) {
@@ -55,18 +59,17 @@ async function makePreferredLivekitFoci(
       FOCI_WK_KEY
     ];
     if (Array.isArray(wellKnownFoci)) {
-      preferredFoci.push(
-        ...wellKnownFoci
-          .filter((f) => !!f)
-          .filter(isLivekitFocusConfig)
-          .map((wellKnownFocus) => {
-            logger.log(
-              "Adding livekit focus from well known: ",
-              wellKnownFocus,
-            );
-            return { ...wellKnownFocus, livekit_alias: livekitAlias };
-          }),
-      );
+      const validWellKnownFoci = wellKnownFoci
+        .filter((f) => !!f)
+        .filter(isLivekitFocusConfig)
+        .map((wellKnownFocus) => {
+          logger.log("Adding livekit focus from well known: ", wellKnownFocus);
+          return { ...wellKnownFocus, livekit_alias: livekitAlias };
+        });
+      if (validWellKnownFoci.length > 0) {
+        toWarmUp = validWellKnownFoci[0];
+      }
+      preferredFoci.push(...validWellKnownFoci);
     }
   }
 
@@ -77,10 +80,15 @@ async function makePreferredLivekitFoci(
       livekit_service_url: urlFromConf,
       livekit_alias: livekitAlias,
     };
+    toWarmUp = toWarmUp ?? focusFormConf;
     logger.log("Adding livekit focus from config: ", focusFormConf);
     preferredFoci.push(focusFormConf);
   }
 
+  if (toWarmUp) {
+    // this will call the jwt/sfu/get endpoint to pre create the livekit room.
+    await getSFUConfigWithOpenID(rtcSession.room.client, toWarmUp);
+  }
   if (preferredFoci.length === 0)
     throw new MatrixRTCFocusMissingError(domain ?? "");
   return Promise.resolve(preferredFoci);
@@ -116,21 +124,20 @@ export async function enterRTCSession(
     await makePreferredLivekitFoci(rtcSession, livekitAlias),
     makeActiveFocus(),
     {
+      notificationType: getUrlParams().sendNotificationType,
       useNewMembershipManager,
       manageMediaKeys: encryptMedia,
       ...(useDeviceSessionMemberEvents !== undefined && {
         useLegacyMemberEvents: !useDeviceSessionMemberEvents,
       }),
       delayedLeaveEventRestartMs:
-        matrixRtcSessionConfig?.delayed_leave_event_restart_ms ??
-        matrixRtcSessionConfig?.membership_keep_alive_period,
+        matrixRtcSessionConfig?.delayed_leave_event_restart_ms,
       delayedLeaveEventDelayMs:
-        matrixRtcSessionConfig?.delayed_leave_event_delay_ms ??
-        matrixRtcSessionConfig?.membership_server_side_expiry_timeout,
+        matrixRtcSessionConfig?.delayed_leave_event_delay_ms,
+      delayedLeaveEventRestartLocalTimeoutMs:
+        matrixRtcSessionConfig?.delayed_leave_event_restart_local_timeout_ms,
       networkErrorRetryMs: matrixRtcSessionConfig?.network_error_retry_ms,
-      makeKeyDelay:
-        matrixRtcSessionConfig?.wait_for_key_rotation_ms ??
-        matrixRtcSessionConfig?.key_rotation_on_leave_delay,
+      makeKeyDelay: matrixRtcSessionConfig?.wait_for_key_rotation_ms,
       membershipEventExpiryMs:
         matrixRtcSessionConfig?.membership_event_expiry_ms,
       useExperimentalToDeviceTransport,

src/settings/DeviceSelection.tsx

@@ -98,7 +98,7 @@ export const DeviceSelection: FC<Props> = ({
               labelText = t("settings.devices.loudspeaker");
               break;
             case "earpiece":
-              labelText = t("settings.devices.earpiece");
+              labelText = t("settings.devices.handset");
               break;
           }
 

src/sound/LICENCE.md

@@ -23,3 +23,4 @@ The following sound effects have been originally created by Element.
 - `end_call`
 - `reactions/rock`
 - `reactions/wave`
+- `reactions/baduntss`

src/state/CallViewModel.ts

@@ -11,37 +11,52 @@ import {
   observeParticipantMedia,
 } from "@livekit/components-core";
 import {
+  ConnectionState,
   type Room as LivekitRoom,
   type LocalParticipant,
-  LocalVideoTrack,
   ParticipantEvent,
   type RemoteParticipant,
-  Track,
 } from "livekit-client";
-import { RoomStateEvent, type Room, type RoomMember } from "matrix-js-sdk";
+import {
+  ClientEvent,
+  type EventTimelineSetHandlerMap,
+  EventType,
+  RoomEvent,
+  RoomStateEvent,
+  SyncState,
+  type Room as MatrixRoom,
+  type RoomMember,
+} from "matrix-js-sdk";
 import {
   BehaviorSubject,
   EMPTY,
+  NEVER,
   type Observable,
   Subject,
   combineLatest,
   concat,
   distinctUntilChanged,
+  endWith,
   filter,
   forkJoin,
   fromEvent,
+  ignoreElements,
   map,
   merge,
   mergeMap,
   of,
+  pairwise,
   race,
   scan,
   skip,
+  skipWhile,
   startWith,
   switchAll,
   switchMap,
   switchScan,
   take,
+  takeUntil,
+  throttleTime,
   timer,
   withLatestFrom,
 } from "rxjs";
@@ -50,6 +65,9 @@ import {
   type CallMembership,
   type MatrixRTCSession,
   MatrixRTCSessionEvent,
+  type MatrixRTCSessionEventHandlerMap,
+  MembershipManagerEvent,
+  Status,
 } from "matrix-js-sdk/lib/matrixrtc";
 
 import { ViewModel } from "./ViewModel";
@@ -60,12 +78,16 @@ import {
 import {
   LocalUserMediaViewModel,
   type MediaViewModel,
-  observeTrackReference$,
   RemoteUserMediaViewModel,
   ScreenShareViewModel,
   type UserMediaViewModel,
 } from "./MediaViewModel";
-import { accumulate, finalizeValue } from "../utils/observable";
+import {
+  accumulate,
+  and$,
+  finalizeValue,
+  pauseWhen,
+} from "../utils/observable";
 import { ObservableScope } from "./ObservableScope";
 import {
   duplicateTiles,
@@ -94,12 +116,27 @@ import { observeSpeaker$ } from "./observeSpeaker";
 import { shallowEquals } from "../utils/array";
 import { calculateDisplayName, shouldDisambiguate } from "../utils/displayname";
 import { type MediaDevices } from "./MediaDevices";
-import { type Behavior } from "./Behavior";
+import { constant, type Behavior } from "./Behavior";
+
+export interface CallViewModelOptions {
+  encryptionSystem: EncryptionSystem;
+  autoLeaveWhenOthersLeft?: boolean;
+  /**
+   * If the call is started in a way where we want it to behave like a telephone usecase
+   * If we sent a notification event, we want the ui to show a ringing state
+   */
+  waitForCallPickup?: boolean;
+}
 
 // How long we wait after a focus switch before showing the real participant
 // list again
 const POST_FOCUS_PARTICIPANT_UPDATE_DELAY_MS = 3000;
 
+// Do not play any sounds if the participant count has exceeded this
+// number.
+export const MAX_PARTICIPANT_COUNT_FOR_SOUND = 8;
+export const THROTTLE_SOUND_EFFECT_MS = 500;
+
 // This is the number of participants that we think constitutes a "small" call
 // on mobile. No spotlight tile should be shown below this threshold.
 const smallMobileCallThreshold = 3;
@@ -259,6 +296,8 @@ class UserMedia {
     participant: LocalParticipant | RemoteParticipant | undefined,
     encryptionSystem: EncryptionSystem,
     livekitRoom: LivekitRoom,
+    mediaDevices: MediaDevices,
+    pretendToBeDisconnected$: Behavior<boolean>,
     displayname$: Observable<string>,
     handRaised$: Observable<Date | null>,
     reaction$: Observable<ReactionOption | null>,
@@ -272,6 +311,7 @@ class UserMedia {
         this.participant$ as Behavior<LocalParticipant>,
         encryptionSystem,
         livekitRoom,
+        mediaDevices,
         this.scope.behavior(displayname$),
         this.scope.behavior(handRaised$),
         this.scope.behavior(reaction$),
@@ -285,6 +325,7 @@ class UserMedia {
         >,
         encryptionSystem,
         livekitRoom,
+        pretendToBeDisconnected$,
         this.scope.behavior(displayname$),
         this.scope.behavior(handRaised$),
         this.scope.behavior(reaction$),
@@ -338,7 +379,8 @@ class ScreenShare {
     member: RoomMember | undefined,
     participant: LocalParticipant | RemoteParticipant,
     encryptionSystem: EncryptionSystem,
-    liveKitRoom: LivekitRoom,
+    livekitRoom: LivekitRoom,
+    pretendToBeDisconnected$: Behavior<boolean>,
     displayName$: Observable<string>,
   ) {
     this.participant$ = new BehaviorSubject(participant);
@@ -348,7 +390,8 @@ class ScreenShare {
       member,
       this.participant$.asObservable(),
       encryptionSystem,
-      liveKitRoom,
+      livekitRoom,
+      pretendToBeDisconnected$,
       this.scope.behavior(displayName$),
       participant.isLocal,
     );
@@ -364,7 +407,7 @@ type MediaItem = UserMedia | ScreenShare;
 
 function getRoomMemberFromRtcMember(
   rtcMember: CallMembership,
-  room: Room,
+  room: MatrixRoom,
 ): { id: string; member: RoomMember | undefined } {
   // WARN! This is not exactly the sender but the user defined in the state key.
   // This will be available once we change to the new "member as object" format in the MatrixRTC object.
@@ -386,18 +429,79 @@ function getRoomMemberFromRtcMember(
 
 // TODO: Move wayyyy more business logic from the call and lobby views into here
 export class CallViewModel extends ViewModel {
-  public readonly localVideo$ = this.scope.behavior<LocalVideoTrack | null>(
-    observeTrackReference$(
-      this.livekitRoom.localParticipant,
-      Track.Source.Camera,
-    ).pipe(
-      map((trackRef) => {
-        const track = trackRef?.publication?.track;
-        return track instanceof LocalVideoTrack ? track : null;
-      }),
+  private readonly userId = this.matrixRoom.client.getUserId();
+
+  private readonly matrixConnected$ = this.scope.behavior(
+    // To consider ourselves connected to MatrixRTC, we check the following:
+    and$(
+      // The client is connected to the sync loop
+      (
+        fromEvent(this.matrixRoom.client, ClientEvent.Sync) as Observable<
+          [SyncState]
+        >
+      ).pipe(
+        startWith([this.matrixRoom.client.getSyncState()]),
+        map(([state]) => state === SyncState.Syncing),
+      ),
+      // Room state observed by session says we're connected
+      fromEvent(
+        this.matrixRTCSession,
+        MembershipManagerEvent.StatusChanged,
+      ).pipe(
+        startWith(null),
+        map(() => this.matrixRTCSession.membershipStatus === Status.Connected),
+      ),
+      // Also watch out for warnings that we've likely hit a timeout and our
+      // delayed leave event is being sent (this condition is here because it
+      // provides an earlier warning than the sync loop timeout, and we wouldn't
+      // see the actual leave event until we reconnect to the sync loop)
+      fromEvent(
+        this.matrixRTCSession,
+        MembershipManagerEvent.ProbablyLeft,
+      ).pipe(
+        startWith(null),
+        map(() => this.matrixRTCSession.probablyLeft !== true),
+      ),
     ),
   );
 
+  private readonly connected$ = this.scope.behavior(
+    and$(
+      this.matrixConnected$,
+      this.livekitConnectionState$.pipe(
+        map((state) => state === ConnectionState.Connected),
+      ),
+    ),
+  );
+
+  /**
+   * Whether we should tell the user that we're reconnecting to the call.
+   */
+  public readonly reconnecting$ = this.scope.behavior(
+    this.connected$.pipe(
+      // We are reconnecting if we previously had some successful initial
+      // connection but are now disconnected
+      scan(
+        ({ connectedPreviously, reconnecting }, connectedNow) => ({
+          connectedPreviously: connectedPreviously || connectedNow,
+          reconnecting: connectedPreviously && !connectedNow,
+        }),
+        { connectedPreviously: false, reconnecting: false },
+      ),
+      map(({ reconnecting }) => reconnecting),
+    ),
+  );
+
+  /**
+   * Whether various media/event sources should pretend to be disconnected from
+   * all network input, even if their connection still technically works.
+   */
+  // We do this when the app is in the 'reconnecting' state, because it might be
+  // that the LiveKit connection is still functional while the homeserver is
+  // down, for example, and we want to avoid making people worry that the app is
+  // in a split-brained state.
+  private readonly pretendToBeDisconnected$ = this.reconnecting$;
+
   /**
    * The raw list of RemoteParticipants as reported by LiveKit
    */
@@ -412,7 +516,7 @@ export class CallViewModel extends ViewModel {
   private readonly remoteParticipantHolds$ = this.scope.behavior<
     RemoteParticipant[][]
   >(
-    this.connectionState$.pipe(
+    this.livekitConnectionState$.pipe(
       withLatestFrom(this.rawRemoteParticipants$),
       mergeMap(([s, ps]) => {
         // Whenever we switch focuses, we should retain all the previous
@@ -425,7 +529,7 @@ export class CallViewModel extends ViewModel {
             // Wait for time to pass and the connection state to have changed
             forkJoin([
               timer(POST_FOCUS_PARTICIPANT_UPDATE_DELAY_MS),
-              this.connectionState$.pipe(
+              this.livekitConnectionState$.pipe(
                 filter((s) => s !== ECAddonConnectionState.ECSwitchingFocus),
                 take(1),
               ),
@@ -449,27 +553,38 @@ export class CallViewModel extends ViewModel {
   /**
    * The RemoteParticipants including those that are being "held" on the screen
    */
-  private readonly remoteParticipants$ = this.scope.behavior<
-    RemoteParticipant[]
-  >(
-    combineLatest(
-      [this.rawRemoteParticipants$, this.remoteParticipantHolds$],
-      (raw, holds) => {
-        const result = [...raw];
-        const resultIds = new Set(result.map((p) => p.identity));
+  private readonly remoteParticipants$ = this.scope
+    .behavior<RemoteParticipant[]>(
+      combineLatest(
+        [this.rawRemoteParticipants$, this.remoteParticipantHolds$],
+        (raw, holds) => {
+          const result = [...raw];
+          const resultIds = new Set(result.map((p) => p.identity));
 
-        // Incorporate the held participants into the list
-        for (const hold of holds) {
-          for (const p of hold) {
-            if (!resultIds.has(p.identity)) {
-              result.push(p);
-              resultIds.add(p.identity);
+          // Incorporate the held participants into the list
+          for (const hold of holds) {
+            for (const p of hold) {
+              if (!resultIds.has(p.identity)) {
+                result.push(p);
+                resultIds.add(p.identity);
+              }
             }
           }
-        }
 
-        return result;
-      },
+          return result;
+        },
+      ),
+    )
+    .pipe(pauseWhen(this.pretendToBeDisconnected$));
+
+  private readonly memberships$ = this.scope.behavior(
+    fromEvent(
+      this.matrixRTCSession,
+      MatrixRTCSessionEvent.MembershipsChanged,
+    ).pipe(
+      startWith(null),
+      pauseWhen(this.pretendToBeDisconnected$),
+      map(() => this.matrixRTCSession.memberships),
     ),
   );
 
@@ -478,20 +593,23 @@ export class CallViewModel extends ViewModel {
    * any displaynames that clashes with another member. Only members
    * joined to the call are considered here.
    */
+  // It turns out that doing the disambiguation above is rather expensive on Safari (10x slower
+  // than on Chrome/Firefox). This means it is important that we multicast the result so that we
+  // don't do this work more times than we need to. This is achieved by converting to a behavior:
   public readonly memberDisplaynames$ = this.scope.behavior(
-    merge(
-      // Handle call membership changes.
-      fromEvent(
-        this.matrixRTCSession,
-        MatrixRTCSessionEvent.MembershipsChanged,
-      ),
-      // Handle room membership changes (and displayname updates)
-      fromEvent(this.matrixRTCSession.room, RoomStateEvent.Members),
-    ).pipe(
-      startWith(null),
-      map(() => {
+    // React to call memberships and also display name updates
+    // (calculateDisplayName implicitly depends on the room member data)
+    combineLatest(
+      [
+        this.memberships$,
+        fromEvent(this.matrixRoom, RoomStateEvent.Members).pipe(
+          startWith(null),
+          pauseWhen(this.pretendToBeDisconnected$),
+        ),
+      ],
+      (memberships, _members) => {
         const displaynameMap = new Map<string, string>();
-        const { room, memberships } = this.matrixRTCSession;
+        const room = this.matrixRoom;
 
         // We only consider RTC members for disambiguation as they are the only visible members.
         for (const rtcMember of memberships) {
@@ -511,14 +629,13 @@ export class CallViewModel extends ViewModel {
           );
         }
         return displaynameMap;
-      }),
-      // It turns out that doing the disambiguation above is rather expensive on Safari (10x slower
-      // than on Chrome/Firefox). This means it is important that we multicast the result so that we
-      // don't do this work more times than we need to. This is achieved by converting to a behavior:
+      },
     ),
   );
 
-  public readonly handsRaised$ = this.scope.behavior(this.handsRaisedSubject$);
+  public readonly handsRaised$ = this.scope.behavior(
+    this.handsRaisedSubject$.pipe(pauseWhen(this.pretendToBeDisconnected$)),
+  );
 
   public readonly reactions$ = this.scope.behavior(
     this.reactionsSubject$.pipe(
@@ -530,6 +647,7 @@ export class CallViewModel extends ViewModel {
           ]),
         ),
       ),
+      pauseWhen(this.pretendToBeDisconnected$),
     ),
   );
 
@@ -541,13 +659,7 @@ export class CallViewModel extends ViewModel {
       this.remoteParticipants$,
       observeParticipantMedia(this.livekitRoom.localParticipant),
       duplicateTiles.value$,
-      // Also react to changes in the MatrixRTC session list.
-      // The session list will also be update if a room membership changes.
-      // No additional RoomState event listener needs to be set up.
-      fromEvent(
-        this.matrixRTCSession,
-        MatrixRTCSessionEvent.MembershipsChanged,
-      ).pipe(startWith(null)),
+      this.memberships$,
       showNonMemberTiles.value$,
     ]).pipe(
       scan(
@@ -557,15 +669,15 @@ export class CallViewModel extends ViewModel {
             remoteParticipants,
             { participant: localParticipant },
             duplicateTiles,
-            _membershipsChanged,
+            memberships,
             showNonMemberTiles,
           ],
         ) => {
           const newItems = new Map(
             function* (this: CallViewModel): Iterable<[string, MediaItem]> {
-              const room = this.matrixRTCSession.room;
+              const room = this.matrixRoom;
               // m.rtc.members are the basis for calculating what is visible in the call
-              for (const rtcMember of this.matrixRTCSession.memberships) {
+              for (const rtcMember of memberships) {
                 const { member, id: livekitParticipantId } =
                   getRoomMemberFromRtcMember(rtcMember, room);
                 const matrixIdentifier = `${rtcMember.sender}:${rtcMember.deviceId}`;
@@ -612,8 +724,10 @@ export class CallViewModel extends ViewModel {
                         indexedMediaId,
                         member,
                         participant,
-                        this.encryptionSystem,
+                        this.options.encryptionSystem,
                         this.livekitRoom,
+                        this.mediaDevices,
+                        this.pretendToBeDisconnected$,
                         this.memberDisplaynames$.pipe(
                           map((m) => m.get(matrixIdentifier) ?? "[👻]"),
                         ),
@@ -635,8 +749,9 @@ export class CallViewModel extends ViewModel {
                           screenShareId,
                           member,
                           participant,
-                          this.encryptionSystem,
+                          this.options.encryptionSystem,
                           this.livekitRoom,
+                          this.pretendToBeDisconnected$,
                           this.memberDisplaynames$.pipe(
                             map((m) => m.get(matrixIdentifier) ?? "[👻]"),
                           ),
@@ -676,8 +791,10 @@ export class CallViewModel extends ViewModel {
                               nonMemberId,
                               undefined,
                               participant,
-                              this.encryptionSystem,
+                              this.options.encryptionSystem,
                               this.livekitRoom,
+                              this.mediaDevices,
+                              this.pretendToBeDisconnected$,
                               this.memberDisplaynames$.pipe(
                                 map(
                                   (m) => m.get(participant.identity) ?? "[👻]",
@@ -726,18 +843,173 @@ export class CallViewModel extends ViewModel {
     ),
   );
 
-  public readonly memberChanges$ = this.userMedia$
-    .pipe(map((mediaItems) => mediaItems.map((m) => m.id)))
-    .pipe(
-      scan<string[], { ids: string[]; joined: string[]; left: string[] }>(
-        (prev, ids) => {
-          const left = prev.ids.filter((id) => !ids.includes(id));
-          const joined = ids.filter((id) => !prev.ids.includes(id));
-          return { ids, joined, left };
-        },
-        { ids: [], joined: [], left: [] },
+  public readonly joinSoundEffect$ = this.userMedia$.pipe(
+    pairwise(),
+    filter(
+      ([prev, current]) =>
+        current.length <= MAX_PARTICIPANT_COUNT_FOR_SOUND &&
+        current.length > prev.length,
+    ),
+    map(() => {}),
+    throttleTime(THROTTLE_SOUND_EFFECT_MS),
+  );
+
+  /**
+   * The number of participants currently in the call.
+   *
+   *  - Each participant has a corresponding MatrixRTC membership state event
+   *  - There can be multiple participants for one Matrix user if they join from
+   *    multiple devices.
+   */
+  public readonly participantCount$ = this.scope.behavior(
+    this.memberships$.pipe(map((ms) => ms.length)),
+  );
+
+  private readonly allOthersLeft$ = this.memberships$.pipe(
+    pairwise(),
+    filter(
+      ([prev, current]) =>
+        current.every((m) => m.sender === this.userId) &&
+        prev.some((m) => m.sender !== this.userId),
+    ),
+    map(() => {}),
+    take(1),
+  );
+
+  public readonly autoLeave$ = this.options.autoLeaveWhenOthersLeft
+    ? this.allOthersLeft$
+    : NEVER;
+
+  private readonly didSendCallNotification$ = fromEvent(
+    this.matrixRTCSession,
+    MatrixRTCSessionEvent.DidSendCallNotification,
+  ) as Observable<
+    Parameters<
+      MatrixRTCSessionEventHandlerMap[MatrixRTCSessionEvent.DidSendCallNotification]
+    >
+  >;
+  /**
+   * Whenever the RTC session tells us that it intends to ring the remote
+   * participant's devices, this emits an Observable tracking the current state of
+   * that ringing process.
+   */
+  // This is a behavior since we need to store the latest state for when we subscribe to this after `didSendCallNotification$`
+  // has already emitted but we still need the latest observable with a timeout timer that only gets created on after receiving `notificationEvent`.
+  // A behavior will emit the latest observable with the running timer to new subscribers.
+  // see also: callPickupState$ and in particular the line: `return this.ring$.pipe(mergeAll());` here we otherwise might get an EMPTY observable if
+  // `ring$` would not be a behavior.
+  private readonly ring$: Behavior<
+    Observable<"ringing" | "timeout" | "decline"> | Observable<never>
+  > = this.scope.behavior(
+    this.didSendCallNotification$.pipe(
+      filter(
+        ([notificationEvent]) => notificationEvent.notification_type === "ring",
       ),
-    );
+      map(([notificationEvent]) => {
+        const lifetimeMs = notificationEvent?.lifetime ?? 0;
+        return concat(
+          lifetimeMs === 0
+            ? // If no lifetime, skip the ring state
+              EMPTY
+            : // Ring until lifetime ms have passed
+              timer(lifetimeMs).pipe(
+                ignoreElements(),
+                startWith("ringing" as const),
+              ),
+          // The notification lifetime has timed out, meaning ringing has likely
+          // stopped on all receiving clients.
+          of("timeout" as const),
+          NEVER,
+        ).pipe(
+          takeUntil(
+            (
+              fromEvent(this.matrixRoom, RoomEvent.Timeline) as Observable<
+                Parameters<EventTimelineSetHandlerMap[RoomEvent.Timeline]>
+              >
+            ).pipe(
+              filter(
+                ([event]) =>
+                  event.getType() === EventType.RTCDecline &&
+                  event.getRelation()?.rel_type === "m.reference" &&
+                  event.getRelation()?.event_id ===
+                    notificationEvent.event_id &&
+                  event.getSender() !== this.userId,
+              ),
+            ),
+          ),
+          endWith("decline" as const),
+        );
+      }),
+    ),
+    EMPTY,
+  );
+
+  /**
+   * Whether some Matrix user other than ourself is joined to the call.
+   */
+  private readonly someoneElseJoined$ = this.memberships$.pipe(
+    map((ms) => ms.some((m) => m.sender !== this.userId)),
+  );
+
+  /**
+   * The current call pickup state of the call.
+   *  - "unknown": The client has not yet sent the notification event. We don't know if it will because it first needs to send its own membership.
+   *     Then we can conclude if we were the first one to join or not.
+   *     This may also be set if we are disconnected.
+   *  - "ringing": The call is ringing on other devices in this room (This client should give audiovisual feedback that this is happening).
+   *  - "timeout": No-one picked up in the defined time this call should be ringing on others devices.
+   *     The call failed. If desired this can be used as a trigger to exit the call.
+   *  - "success": Someone else joined. The call is in a normal state. No audiovisual feedback.
+   *  - null: EC is configured to never show any waiting for answer state.
+   */
+  public readonly callPickupState$: Behavior<
+    "unknown" | "ringing" | "timeout" | "decline" | "success" | null
+  > = this.options.waitForCallPickup
+    ? this.scope.behavior<
+        "unknown" | "ringing" | "timeout" | "decline" | "success"
+      >(
+        combineLatest([
+          this.livekitConnectionState$,
+          this.someoneElseJoined$,
+        ]).pipe(
+          switchMap(([livekitConnectionState, someoneElseJoined]) => {
+            if (livekitConnectionState === ConnectionState.Disconnected) {
+              // Do not ring until we're connected.
+              return of("unknown" as const);
+            } else if (someoneElseJoined) {
+              return of("success" as const);
+            }
+            // Show the ringing state of the most recent ringing attempt.
+            // ring$ is a behavior so it will emit the latest observable which very well might already have a running timer.
+            // this is important in case livekitConnectionState$ after didSendCallNotification$ has already emitted.
+            return this.ring$.pipe(switchAll());
+          }),
+          // The state starts as 'unknown' because we don't know if the RTC
+          // session will actually send a notify event yet. It will only be
+          // known once we send our own membership and see that we were the
+          // first one to join.
+          startWith("unknown" as const),
+        ),
+      )
+    : constant(null);
+
+  public readonly leaveSoundEffect$ = combineLatest([
+    this.callPickupState$,
+    this.userMedia$,
+  ]).pipe(
+    // Until the call is successful, do not play a leave sound.
+    // If callPickupState$ is null, then we always play the sound as it will not conflict with a decline sound.
+    skipWhile(([c]) => c !== null && c !== "success"),
+    map(([, userMedia]) => userMedia),
+    pairwise(),
+    filter(
+      ([prev, current]) =>
+        current.length <= MAX_PARTICIPANT_COUNT_FOR_SOUND &&
+        current.length < prev.length,
+    ),
+    map(() => {}),
+    throttleTime(THROTTLE_SOUND_EFFECT_MS),
+  );
 
   /**
    * List of MediaItems that we want to display, that are of type ScreenShare
@@ -839,7 +1111,7 @@ export class CallViewModel extends ViewModel {
           map((speaker) => (speaker ? [speaker] : [])),
         );
       }),
-      distinctUntilChanged(shallowEquals),
+      distinctUntilChanged<MediaViewModel[]>(shallowEquals),
     ),
   );
 
@@ -1424,10 +1696,11 @@ export class CallViewModel extends ViewModel {
   public constructor(
     // A call is permanently tied to a single Matrix room and LiveKit room
     private readonly matrixRTCSession: MatrixRTCSession,
+    private readonly matrixRoom: MatrixRoom,
     private readonly livekitRoom: LivekitRoom,
     private readonly mediaDevices: MediaDevices,
-    private readonly encryptionSystem: EncryptionSystem,
-    private readonly connectionState$: Observable<ECConnectionState>,
+    private readonly options: CallViewModelOptions,
+    public readonly livekitConnectionState$: Observable<ECConnectionState>,
     private readonly handsRaisedSubject$: Observable<
       Record<string, RaisedHandInfo>
     >,
@@ -1436,5 +1709,51 @@ export class CallViewModel extends ViewModel {
     >,
   ) {
     super();
+
+    // Pause upstream of all local media tracks when we're disconnected from
+    // MatrixRTC, because it can be an unpleasant surprise for the app to say
+    // 'reconnecting' and yet still be transmitting your media to others.
+    // We use matrixConnected$ rather than reconnecting$ because we want to
+    // pause tracks during the initial joining sequence too until we're sure
+    // that our own media is displayed on screen.
+    this.matrixConnected$.pipe(this.scope.bind()).subscribe((connected) => {
+      const publications =
+        this.livekitRoom.localParticipant.trackPublications.values();
+      if (connected) {
+        for (const p of publications) {
+          if (p.track?.isUpstreamPaused === true) {
+            const kind = p.track.kind;
+            logger.log(
+              `Resumming ${kind} track (MatrixRTC connection present)`,
+            );
+            p.track
+              .resumeUpstream()
+              .catch((e) =>
+                logger.error(
+                  `Failed to resume ${kind} track after MatrixRTC reconnection`,
+                  e,
+                ),
+              );
+          }
+        }
+      } else {
+        for (const p of publications) {
+          if (p.track?.isUpstreamPaused === false) {
+            const kind = p.track.kind;
+            logger.log(
+              `Pausing ${kind} track (uncertain MatrixRTC connection)`,
+            );
+            p.track
+              .pauseUpstream()
+              .catch((e) =>
+                logger.error(
+                  `Failed to pause ${kind} track after entering uncertain MatrixRTC connection`,
+                  e,
+                ),
+              );
+          }
+        }
+      }
+    });
   }
 }

src/state/MediaDevices.ts

@@ -17,7 +17,7 @@ import {
   type Observable,
 } from "rxjs";
 import { createMediaDeviceObserver } from "@livekit/components-core";
-import { logger as rootLogger } from "matrix-js-sdk/lib/logger";
+import { type Logger, logger as rootLogger } from "matrix-js-sdk/lib/logger";
 
 import {
   audioInput as audioInputSetting,
@@ -38,7 +38,6 @@ import { type Behavior, constant } from "./Behavior";
 // This hardcoded id is used in EX ios! It can only be changed in coordination with
 // the ios swift team.
 const EARPIECE_CONFIG_ID = "earpiece-id";
-const logger = rootLogger.getChild("[MediaDevices]");
 
 export type DeviceLabel =
   | { type: "name"; name: string }
@@ -100,6 +99,7 @@ function availableRawDevices$(
   kind: MediaDeviceKind,
   usingNames$: Behavior<boolean>,
   scope: ObservableScope,
+  logger: Logger,
 ): Behavior<MediaDeviceInfo[]> {
   const logError = (e: Error): void =>
     logger.error("Error creating MediaDeviceObserver", e);
@@ -162,8 +162,15 @@ function selectDevice$<Label>(
 }
 
 class AudioInput implements MediaDevice<DeviceLabel, SelectedAudioInputDevice> {
+  private logger = rootLogger.getChild("[MediaDevices AudioInput]");
+
   private readonly availableRaw$: Behavior<MediaDeviceInfo[]> =
-    availableRawDevices$("audioinput", this.usingNames$, this.scope);
+    availableRawDevices$(
+      "audioinput",
+      this.usingNames$,
+      this.scope,
+      this.logger,
+    );
 
   public readonly available$ = this.scope.behavior(
     this.availableRaw$.pipe(map(buildDeviceMap)),
@@ -200,7 +207,7 @@ class AudioInput implements MediaDevice<DeviceLabel, SelectedAudioInputDevice> {
     private readonly scope: ObservableScope,
   ) {
     this.available$.subscribe((available) => {
-      logger.info("[audio-input] available devices:", available);
+      this.logger.info("[audio-input] available devices:", available);
     });
   }
 }
@@ -208,10 +215,16 @@ class AudioInput implements MediaDevice<DeviceLabel, SelectedAudioInputDevice> {
 class AudioOutput
   implements MediaDevice<AudioOutputDeviceLabel, SelectedAudioOutputDevice>
 {
+  private logger = rootLogger.getChild("[MediaDevices AudioOutput]");
   public readonly available$ = this.scope.behavior(
-    availableRawDevices$("audiooutput", this.usingNames$, this.scope).pipe(
+    availableRawDevices$(
+      "audiooutput",
+      this.usingNames$,
+      this.scope,
+      this.logger,
+    ).pipe(
       map((availableRaw) => {
-        const available: Map<string, AudioOutputDeviceLabel> =
+        let available: Map<string, AudioOutputDeviceLabel> =
           buildDeviceMap(availableRaw);
         // Create a virtual default audio output for browsers that don't have one.
         // Its device ID must be the empty string because that's what setSinkId
@@ -221,6 +234,12 @@ class AudioOutput
             type: "default",
             name: availableRaw[0]?.label || null,
           });
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        const isSafari = !!(window as any).GestureEvent; // non standard api only found on Safari. https://developer.mozilla.org/en-US/docs/Web/API/GestureEvent#browser_compatibility
+        if (isSafari) {
+          // set to empty map if we are on Safari, because it does not support setSinkId
+          available = new Map();
+        }
         // Note: creating virtual default input devices would be another problem
         // entirely, because requesting a media stream from deviceId "" won't
         // automatically track the default device.
@@ -250,7 +269,7 @@ class AudioOutput
     private readonly scope: ObservableScope,
   ) {
     this.available$.subscribe((available) => {
-      logger.info("[audio-output] available devices:", available);
+      this.logger.info("[audio-output] available devices:", available);
     });
   }
 }
@@ -258,6 +277,7 @@ class AudioOutput
 class ControlledAudioOutput
   implements MediaDevice<AudioOutputDeviceLabel, SelectedAudioOutputDevice>
 {
+  private logger = rootLogger.getChild("[MediaDevices ControlledAudioOutput]");
   // We need to subscribe to the raw devices so that the OS does update the input
   // back to what it was before. otherwise we will switch back to the default
   // whenever we allocate a new stream.
@@ -265,6 +285,7 @@ class ControlledAudioOutput
     "audiooutput",
     this.usingNames$,
     this.scope,
+    this.logger,
   );
 
   public readonly available$ = this.scope.behavior(
@@ -328,26 +349,37 @@ class ControlledAudioOutput
       // been selected - for example, Element X iOS listens to this to determine
       // whether it should enable the proximity sensor.
       if (device !== undefined) {
-        logger.info("[controlled-output] onAudioDeviceSelect called:", device);
+        this.logger.info(
+          "[controlled-output] onAudioDeviceSelect called:",
+          device,
+        );
         window.controls.onAudioDeviceSelect?.(device.id);
         // Also invoke the deprecated callback for backward compatibility
         window.controls.onOutputDeviceSelect?.(device.id);
       }
     });
     this.available$.subscribe((available) => {
-      logger.info("[controlled-output] available devices:", available);
+      this.logger.info("[controlled-output] available devices:", available);
     });
     this.availableRaw$.subscribe((availableRaw) => {
-      logger.info("[controlled-output] available raw devices:", availableRaw);
+      this.logger.info(
+        "[controlled-output] available raw devices:",
+        availableRaw,
+      );
     });
   }
 }
 
 class VideoInput implements MediaDevice<DeviceLabel, SelectedDevice> {
+  private logger = rootLogger.getChild("[MediaDevices VideoInput]");
+
   public readonly available$ = this.scope.behavior(
-    availableRawDevices$("videoinput", this.usingNames$, this.scope).pipe(
-      map(buildDeviceMap),
-    ),
+    availableRawDevices$(
+      "videoinput",
+      this.usingNames$,
+      this.scope,
+      this.logger,
+    ).pipe(map(buildDeviceMap)),
   );
   public readonly selected$ = this.scope.behavior(
     selectDevice$(this.available$, videoInputSetting.value$).pipe(
@@ -364,7 +396,7 @@ class VideoInput implements MediaDevice<DeviceLabel, SelectedDevice> {
   ) {
     // This also has the purpose of subscribing to the available devices
     this.available$.subscribe((available) => {
-      logger.info("[video-input] available devices:", available);
+      this.logger.info("[video-input] available devices:", available);
     });
   }
 }

src/state/MediaViewModel.test.ts

@@ -5,14 +5,40 @@ SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
 Please see LICENSE in the repository root for full details.
 */
 
-import { expect, test, vi } from "vitest";
+import { expect, onTestFinished, test, vi } from "vitest";
+import {
+  type LocalTrackPublication,
+  LocalVideoTrack,
+  TrackEvent,
+} from "livekit-client";
+import { waitFor } from "@testing-library/dom";
 
 import {
+  mockLocalParticipant,
+  mockMediaDevices,
   mockRtcMembership,
   withLocalMedia,
   withRemoteMedia,
   withTestScheduler,
 } from "../utils/test";
+import { getValue } from "../utils/observable";
+import { constant } from "./Behavior";
+
+global.MediaStreamTrack = class {} as unknown as {
+  new (): MediaStreamTrack;
+  prototype: MediaStreamTrack;
+};
+global.MediaStream = class {} as unknown as {
+  new (): MediaStream;
+  prototype: MediaStream;
+};
+
+const platformMock = vi.hoisted(() => vi.fn(() => "desktop"));
+vi.mock("../Platform", () => ({
+  get platform(): string {
+    return platformMock();
+  },
+}));
 
 const rtcMembership = mockRtcMembership("@alice:example.org", "AAAA");
 
@@ -79,17 +105,23 @@ test("toggle fit/contain for a participant's video", async () => {
 });
 
 test("local media remembers whether it should always be shown", async () => {
-  await withLocalMedia(rtcMembership, {}, (vm) =>
-    withTestScheduler(({ expectObservable, schedule }) => {
-      schedule("-a|", { a: () => vm.setAlwaysShow(false) });
-      expectObservable(vm.alwaysShow$).toBe("ab", { a: true, b: false });
-    }),
+  await withLocalMedia(
+    rtcMembership,
+    {},
+    mockLocalParticipant({}),
+    mockMediaDevices({}),
+    (vm) =>
+      withTestScheduler(({ expectObservable, schedule }) => {
+        schedule("-a|", { a: () => vm.setAlwaysShow(false) });
+        expectObservable(vm.alwaysShow$).toBe("ab", { a: true, b: false });
+      }),
   );
   // Next local media should start out *not* always shown
   await withLocalMedia(
     rtcMembership,
-
     {},
+    mockLocalParticipant({}),
+    mockMediaDevices({}),
     (vm) =>
       withTestScheduler(({ expectObservable, schedule }) => {
         schedule("-a|", { a: () => vm.setAlwaysShow(true) });
@@ -97,3 +129,77 @@ test("local media remembers whether it should always be shown", async () => {
       }),
   );
 });
+
+test("switch cameras", async () => {
+  // Camera switching is only available on mobile
+  platformMock.mockReturnValue("android");
+  onTestFinished(() => void platformMock.mockReset());
+
+  // Construct a mock video track which knows how to be restarted
+  const track = new LocalVideoTrack({
+    getConstraints() {},
+    addEventListener() {},
+    removeEventListener() {},
+  } as unknown as MediaStreamTrack);
+
+  let deviceId = "front camera";
+  const restartTrack = vi.fn(async ({ facingMode }) => {
+    deviceId = facingMode === "user" ? "front camera" : "back camera";
+    track.emit(TrackEvent.Restarted);
+    return Promise.resolve();
+  });
+  track.restartTrack = restartTrack;
+
+  Object.defineProperty(track, "mediaStreamTrack", {
+    get() {
+      return {
+        label: "Video",
+        getSettings: (): object => ({
+          deviceId,
+          facingMode: deviceId === "front camera" ? "user" : "environment",
+        }),
+      };
+    },
+  });
+
+  const selectVideoInput = vi.fn();
+
+  await withLocalMedia(
+    rtcMembership,
+    {},
+    mockLocalParticipant({
+      getTrackPublication() {
+        return { track } as unknown as LocalTrackPublication;
+      },
+    }),
+    mockMediaDevices({
+      videoInput: {
+        available$: constant(new Map()),
+        selected$: constant(undefined),
+        select: selectVideoInput,
+      },
+    }),
+    async (vm) => {
+      // Switch to back camera
+      getValue(vm.switchCamera$)!();
+      expect(restartTrack).toHaveBeenCalledExactlyOnceWith({
+        facingMode: "environment",
+      });
+      await waitFor(() => {
+        expect(selectVideoInput).toHaveBeenCalledTimes(1);
+        expect(selectVideoInput).toHaveBeenCalledWith("back camera");
+      });
+      expect(deviceId).toBe("back camera");
+
+      // Switch to front camera
+      getValue(vm.switchCamera$)!();
+      expect(restartTrack).toHaveBeenCalledTimes(2);
+      expect(restartTrack).toHaveBeenLastCalledWith({ facingMode: "user" });
+      await waitFor(() => {
+        expect(selectVideoInput).toHaveBeenCalledTimes(2);
+        expect(selectVideoInput).toHaveBeenLastCalledWith("front camera");
+      });
+      expect(deviceId).toBe("front camera");
+    },
+  );
+});

src/state/MediaViewModel.ts

@@ -16,6 +16,7 @@ import {
 import {
   type LocalParticipant,
   LocalTrack,
+  LocalVideoTrack,
   type Participant,
   ParticipantEvent,
   type RemoteParticipant,
@@ -27,6 +28,7 @@ import {
   RemoteTrack,
 } from "livekit-client";
 import { type RoomMember } from "matrix-js-sdk";
+import { logger } from "matrix-js-sdk/lib/logger";
 import {
   BehaviorSubject,
   type Observable,
@@ -51,6 +53,8 @@ import { accumulate } from "../utils/observable";
 import { type EncryptionSystem } from "../e2ee/sharedKeyManagement";
 import { E2eeType } from "../e2ee/e2eeType";
 import { type ReactionOption } from "../reactions";
+import { platform } from "../Platform";
+import { type MediaDevices } from "./MediaDevices";
 import { type Behavior } from "./Behavior";
 
 export function observeTrackReference$(
@@ -357,10 +361,7 @@ export type UserMediaViewModel =
  * Some participant's user media.
  */
 abstract class BaseUserMediaViewModel extends BaseMediaViewModel {
-  /**
-   * Whether the participant is speaking.
-   */
-  public readonly speaking$ = this.scope.behavior(
+  private readonly _speaking$ = this.scope.behavior(
     this.participant$.pipe(
       switchMap((p) =>
         p
@@ -372,15 +373,27 @@ abstract class BaseUserMediaViewModel extends BaseMediaViewModel {
       ),
     ),
   );
+  /**
+   * Whether the participant is speaking.
+   */
+  // Getter backed by a private field so that subclasses can override it
+  public get speaking$(): Behavior<boolean> {
+    return this._speaking$;
+  }
 
   /**
    * Whether this participant is sending audio (i.e. is unmuted on their side).
    */
   public readonly audioEnabled$: Behavior<boolean>;
+
+  private readonly _videoEnabled$: Behavior<boolean>;
   /**
    * Whether this participant is sending video.
    */
-  public readonly videoEnabled$: Behavior<boolean>;
+  // Getter backed by a private field so that subclasses can override it
+  public get videoEnabled$(): Behavior<boolean> {
+    return this._videoEnabled$;
+  }
 
   private readonly _cropVideo$ = new BehaviorSubject(true);
   /**
@@ -417,7 +430,7 @@ abstract class BaseUserMediaViewModel extends BaseMediaViewModel {
     this.audioEnabled$ = this.scope.behavior(
       media$.pipe(map((m) => m?.microphoneTrack?.isMuted === false)),
     );
-    this.videoEnabled$ = this.scope.behavior(
+    this._videoEnabled$ = this.scope.behavior(
       media$.pipe(map((m) => m?.cameraTrack?.isMuted === false)),
     );
   }
@@ -443,20 +456,38 @@ abstract class BaseUserMediaViewModel extends BaseMediaViewModel {
  */
 export class LocalUserMediaViewModel extends BaseUserMediaViewModel {
   /**
-   * Whether the video should be mirrored.
+   * The local video track as an observable that emits whenever the track
+   * changes, the camera is switched, or the track is muted.
    */
-  public readonly mirror$ = this.scope.behavior(
+  private readonly videoTrack$: Observable<LocalVideoTrack | null> =
     this.video$.pipe(
       switchMap((v) => {
         const track = v?.publication?.track;
-        if (!(track instanceof LocalTrack)) return of(false);
-        // Watch for track restarts, because they indicate a camera switch
-        return fromEvent(track, TrackEvent.Restarted).pipe(
-          startWith(null),
-          // Mirror only front-facing cameras (those that face the user)
-          map(() => facingModeFromLocalTrack(track).facingMode === "user"),
+        if (!(track instanceof LocalVideoTrack)) return of(null);
+        return merge(
+          // Watch for track restarts because they indicate a camera switch.
+          // This event is also emitted when unmuting the track object.
+          fromEvent(track, TrackEvent.Restarted).pipe(
+            startWith(null),
+            map(() => track),
+          ),
+          // When the track object is muted, reset it to null.
+          fromEvent(track, TrackEvent.Muted).pipe(map(() => null)),
         );
       }),
+    );
+
+  /**
+   * Whether the video should be mirrored.
+   */
+  public readonly mirror$ = this.scope.behavior(
+    this.videoTrack$.pipe(
+      // Mirror only front-facing cameras (those that face the user)
+      map(
+        (track) =>
+          track !== null &&
+          facingModeFromLocalTrack(track).facingMode === "user",
+      ),
     ),
   );
 
@@ -467,12 +498,48 @@ export class LocalUserMediaViewModel extends BaseUserMediaViewModel {
   public readonly alwaysShow$ = alwaysShowSelf.value$;
   public readonly setAlwaysShow = alwaysShowSelf.setValue;
 
+  /**
+   * Callback for switching between the front and back cameras.
+   */
+  public readonly switchCamera$: Behavior<(() => void) | null> =
+    this.scope.behavior(
+      platform === "desktop"
+        ? of(null)
+        : this.videoTrack$.pipe(
+            map((track) => {
+              if (track === null) return null;
+              const facingMode = facingModeFromLocalTrack(track).facingMode;
+              // If the camera isn't front or back-facing, don't provide a switch
+              // camera shortcut at all
+              if (facingMode !== "user" && facingMode !== "environment")
+                return null;
+              // Restart the track with a camera facing the opposite direction
+              return (): void =>
+                void track
+                  .restartTrack({
+                    facingMode: facingMode === "user" ? "environment" : "user",
+                  })
+                  .then(() => {
+                    // Inform the MediaDevices which camera was chosen
+                    const deviceId =
+                      track.mediaStreamTrack.getSettings().deviceId;
+                    if (deviceId !== undefined)
+                      this.mediaDevices.videoInput.select(deviceId);
+                  })
+                  .catch((e) =>
+                    logger.error("Failed to switch camera", facingMode, e),
+                  );
+            }),
+          ),
+    );
+
   public constructor(
     id: string,
     member: RoomMember | undefined,
     participant$: Behavior<LocalParticipant | undefined>,
     encryptionSystem: EncryptionSystem,
     livekitRoom: LivekitRoom,
+    private readonly mediaDevices: MediaDevices,
     displayName$: Behavior<string>,
     handRaised$: Behavior<Date | null>,
     reaction$: Behavior<ReactionOption | null>,
@@ -514,6 +581,12 @@ export class LocalUserMediaViewModel extends BaseUserMediaViewModel {
  * A remote participant's user media.
  */
 export class RemoteUserMediaViewModel extends BaseUserMediaViewModel {
+  // This private field is used to override the value from the superclass
+  private __speaking$: Behavior<boolean>;
+  public get speaking$(): Behavior<boolean> {
+    return this.__speaking$;
+  }
+
   private readonly locallyMutedToggle$ = new Subject<void>();
   private readonly localVolumeAdjustment$ = new Subject<number>();
   private readonly localVolumeCommit$ = new Subject<void>();
@@ -553,6 +626,12 @@ export class RemoteUserMediaViewModel extends BaseUserMediaViewModel {
     ),
   );
 
+  // This private field is used to override the value from the superclass
+  private __videoEnabled$: Behavior<boolean>;
+  public get videoEnabled$(): Behavior<boolean> {
+    return this.__videoEnabled$;
+  }
+
   /**
    * Whether this participant's audio is disabled.
    */
@@ -566,6 +645,7 @@ export class RemoteUserMediaViewModel extends BaseUserMediaViewModel {
     participant$: Observable<RemoteParticipant | undefined>,
     encryptionSystem: EncryptionSystem,
     livekitRoom: LivekitRoom,
+    private readonly pretendToBeDisconnected$: Behavior<boolean>,
     displayname$: Behavior<string>,
     handRaised$: Behavior<Date | null>,
     reaction$: Behavior<ReactionOption | null>,
@@ -581,11 +661,33 @@ export class RemoteUserMediaViewModel extends BaseUserMediaViewModel {
       reaction$,
     );
 
+    this.__speaking$ = this.scope.behavior(
+      pretendToBeDisconnected$.pipe(
+        switchMap((disconnected) =>
+          disconnected ? of(false) : super.speaking$,
+        ),
+      ),
+    );
+
+    this.__videoEnabled$ = this.scope.behavior(
+      pretendToBeDisconnected$.pipe(
+        switchMap((disconnected) =>
+          disconnected ? of(false) : super.videoEnabled$,
+        ),
+      ),
+    );
+
     // Sync the local volume with LiveKit
     combineLatest([
       participant$,
-      this.localVolume$.pipe(this.scope.bind()),
-    ]).subscribe(([p, volume]) => p && p.setVolume(volume));
+      // The local volume, taking into account whether we're supposed to pretend
+      // that the audio stream is disconnected (since we don't necessarily want
+      // that to modify the UI state).
+      this.pretendToBeDisconnected$.pipe(
+        switchMap((disconnected) => (disconnected ? of(0) : this.localVolume$)),
+        this.scope.bind(),
+      ),
+    ]).subscribe(([p, volume]) => p?.setVolume(volume));
   }
 
   public toggleLocallyMuted(): void {
@@ -625,12 +727,20 @@ export class RemoteUserMediaViewModel extends BaseUserMediaViewModel {
  * Some participant's screen share media.
  */
 export class ScreenShareViewModel extends BaseMediaViewModel {
+  /**
+   * Whether this screen share's video should be displayed.
+   */
+  public readonly videoEnabled$ = this.scope.behavior(
+    this.pretendToBeDisconnected$.pipe(map((disconnected) => !disconnected)),
+  );
+
   public constructor(
     id: string,
     member: RoomMember | undefined,
     participant$: Observable<LocalParticipant | RemoteParticipant>,
     encryptionSystem: EncryptionSystem,
     livekitRoom: LivekitRoom,
+    private readonly pretendToBeDisconnected$: Behavior<boolean>,
     displayname$: Behavior<string>,
     public readonly local: boolean,
   ) {

src/tile/GridTile.module.css

@@ -83,3 +83,25 @@ borders don't support gradients */
 .volumeSlider {
   width: 100%;
 }
+
+.tile .switchCamera {
+  opacity: 1;
+  background: var(--cpd-color-bg-action-secondary-rest);
+  border: 1px solid var(--cpd-color-border-interactive-secondary);
+}
+
+.tile .switchCamera > svg {
+  color: var(--cpd-color-icon-primary);
+}
+
+@media (hover) {
+  .tile .switchCamera:hover {
+    background: var(--cpd-color-bg-subtle-secondary);
+    border-color: var(--cpd-color-border-interactive-hovered);
+  }
+}
+
+.tile .switchCamera:active {
+  background: var(--cpd-color-bg-subtle-primary);
+  border-color: var(--cpd-color-border-interactive-hovered);
+}

src/tile/GridTile.test.tsx

@@ -64,6 +64,7 @@ test("GridTile is accessible", async () => {
             targetWidth={300}
             targetHeight={200}
             showSpeakingIndicators
+            focusable={true}
           />
         </ReactionsSenderProvider>,
       );

src/tile/GridTile.tsx

@@ -28,6 +28,7 @@ import {
   UserProfileIcon,
   ExpandIcon,
   VolumeOffSolidIcon,
+  SwitchCameraSolidIcon,
 } from "@vector-im/compound-design-tokens/assets/web/icons";
 import {
   ContextMenu,
@@ -59,12 +60,14 @@ interface TileProps {
   targetHeight: number;
   displayName: string;
   showSpeakingIndicators: boolean;
+  focusable: boolean;
 }
 
 interface UserMediaTileProps extends TileProps {
   vm: UserMediaViewModel;
   mirror: boolean;
   locallyMuted: boolean;
+  primaryButton?: ReactNode;
   menuStart?: ReactNode;
   menuEnd?: ReactNode;
 }
@@ -74,10 +77,12 @@ const UserMediaTile: FC<UserMediaTileProps> = ({
   vm,
   showSpeakingIndicators,
   locallyMuted,
+  primaryButton,
   menuStart,
   menuEnd,
   className,
   displayName,
+  focusable,
   ...props
 }) => {
   const { toggleRaisedHand } = useReactionsSender();
@@ -159,21 +164,27 @@ const UserMediaTile: FC<UserMediaTileProps> = ({
         />
       }
       displayName={displayName}
+      focusable={focusable}
       primaryButton={
-        <Menu
-          open={menuOpen}
-          onOpenChange={setMenuOpen}
-          title={displayName}
-          trigger={
-            <button aria-label={t("common.options")}>
-              <OverflowHorizontalIcon aria-hidden width={20} height={20} />
-            </button>
-          }
-          side="left"
-          align="start"
-        >
-          {menu}
-        </Menu>
+        primaryButton ?? (
+          <Menu
+            open={menuOpen}
+            onOpenChange={setMenuOpen}
+            title={displayName}
+            trigger={
+              <button
+                aria-label={t("common.options")}
+                tabIndex={focusable ? undefined : -1}
+              >
+                <OverflowHorizontalIcon aria-hidden width={20} height={20} />
+              </button>
+            }
+            side="left"
+            align="start"
+          >
+            {menu}
+          </Menu>
+        )
       }
       raisedHandTime={handRaised ?? undefined}
       currentReaction={reaction ?? undefined}
@@ -203,11 +214,14 @@ const LocalUserMediaTile: FC<LocalUserMediaTileProps> = ({
   ref,
   vm,
   onOpenProfile,
+  focusable,
   ...props
 }) => {
   const { t } = useTranslation();
   const mirror = useBehavior(vm.mirror$);
   const alwaysShow = useBehavior(vm.alwaysShow$);
+  const switchCamera = useBehavior(vm.switchCamera$);
+
   const latestAlwaysShow = useLatest(alwaysShow);
   const onSelectAlwaysShow = useCallback(
     (e: Event) => {
@@ -223,6 +237,18 @@ const LocalUserMediaTile: FC<LocalUserMediaTileProps> = ({
       vm={vm}
       locallyMuted={false}
       mirror={mirror}
+      primaryButton={
+        switchCamera === null ? undefined : (
+          <button
+            className={styles.switchCamera}
+            aria-label={t("switch_camera")}
+            onClick={switchCamera}
+            tabIndex={focusable ? undefined : -1}
+          >
+            <SwitchCameraSolidIcon aria-hidden width={20} height={20} />
+          </button>
+        )
+      }
       menuStart={
         <ToggleMenuItem
           Icon={VisibilityOnIcon}
@@ -240,6 +266,7 @@ const LocalUserMediaTile: FC<LocalUserMediaTileProps> = ({
           />
         )
       }
+      focusable={focusable}
       {...props}
     />
   );
@@ -319,6 +346,7 @@ interface GridTileProps {
   className?: string;
   style?: ComponentProps<typeof animated.div>["style"];
   showSpeakingIndicators: boolean;
+  focusable: boolean;
 }
 
 export const GridTile: FC<GridTileProps> = ({