livekit: Add simulcast option defaulted to enabled

This enables simulcast for the LiveKit connection.

lang/en.json

@@ -11,6 +11,8 @@
   "LIVEKITAVCLIENT.livekitTraceHint": "Enables trace logging of the LiveKit client library",
   "LIVEKITAVCLIENT.resetRoom": "Reset meeting room ID",
   "LIVEKITAVCLIENT.resetRoomHint": "Reset the meeting room ID used for your A/V",
+  "LIVEKITAVCLIENT.simulcast": "Simulcast enabled",
+  "LIVEKITAVCLIENT.simulcastHint": "Uses simulcast video tracks with LiveKit",
   "LIVEKITAVCLIENT.serverTypeFVTT": "LiveKit AVClient: Foundry VTT is not supported as a signalling server. Please set a custom signalling server under Audio/Video Configuration",
   "WEBRTC.FVTTSignalingServer": "Foundry VTT (Not supported)"
 }

src/LiveKitAVClient.ts

@@ -160,6 +160,7 @@ export default class LiveKitAVClient extends AVClient {
     // Set the livekit connection options
     const livekitConnectionOptions: ConnectOptions = {
       tracks: localTracks,
+      simulcast: getGame().settings.get(MODULE_NAME, "simulcast") === true,
     };
 
     if (

src/LiveKitClient.ts

@@ -20,7 +20,7 @@ import {
   TrackEvent,
   VideoTrack,
 } from "livekit-client";
-import { LANG_NAME } from "./utils/constants";
+import { LANG_NAME, MODULE_NAME } from "./utils/constants";
 import * as log from "./utils/logging";
 import { getGame } from "./utils/helpers";
 import LiveKitAVClient from "./LiveKitAVClient";
@@ -256,7 +256,11 @@ export default class LiveKitClient {
         await this.initializeVideoTrack();
         if (this.videoTrack) {
           await this.liveKitRoom?.localParticipant.publishTrack(
-            this.videoTrack
+            this.videoTrack,
+            {
+              simulcast:
+                getGame().settings.get(MODULE_NAME, "simulcast") === true,
+            }
           );
           const userVideoElement = ui.webrtc?.getUserVideoElement(
             getGame().user?.id || ""

src/utils/registerModuleSettings.ts

@@ -3,6 +3,15 @@ import { delayReload, getGame, registerModuleSetting } from "./helpers";
 import * as log from "./logging";
 
 export default function registerModuleSettings(): void {
+  registerModuleSetting({
+    name: "simulcast",
+    scope: "world",
+    config: true,
+    default: true,
+    type: Boolean,
+    onChange: () => getGame().webrtc?.connect(),
+  });
+
   registerModuleSetting({
     name: "resetRoom",
     scope: "world",