Add feature flag for ADM2 on Windows

Co-authored-by: Evan Hahn <69474926+EvanHahn-Signal@users.noreply.github.com>

ts/RemoteConfig.ts

@@ -8,6 +8,7 @@ import * as log from './logging/log';
 
 export type ConfigKeyType =
   | 'desktop.announcementGroup'
+  | 'desktop.calling.useWindowsAdm2'
   | 'desktop.clientExpiration'
   | 'desktop.disableGV1'
   | 'desktop.groupCallOutboundRing'

ts/calling/audioDeviceModule.ts

@@ -2,6 +2,9 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import { makeEnumParser } from '../util/enum';
+import { isEnabled } from '../RemoteConfig';
+import { isAlpha, isBeta } from '../util/version';
+import * as OS from '../OS';
 
 export enum AudioDeviceModule {
   Default = 'Default',
@@ -12,3 +15,20 @@ export const parseAudioDeviceModule = makeEnumParser(
   AudioDeviceModule,
   AudioDeviceModule.Default
 );
+
+export function getAudioDeviceModule(): AudioDeviceModule {
+  if (!OS.isWindows()) {
+    return AudioDeviceModule.Default;
+  }
+
+  const appVersion = window.getVersion();
+  if (
+    isEnabled('desktop.calling.useWindowsAdm2') ||
+    isBeta(appVersion) ||
+    isAlpha(appVersion)
+  ) {
+    return AudioDeviceModule.WindowsAdm2;
+  }
+
+  return AudioDeviceModule.Default;
+}

ts/services/calling.ts

@@ -59,6 +59,7 @@ import {
 } from '../types/Calling';
 import {
   AudioDeviceModule,
+  getAudioDeviceModule,
   parseAudioDeviceModule,
 } from '../calling/audioDeviceModule';
 import {
@@ -67,7 +68,6 @@ import {
 } from '../calling/findBestMatchingDevice';
 import type { LocalizerType } from '../types/Util';
 import { UUID } from '../types/UUID';
-import * as OS from '../OS';
 import type { ConversationModel } from '../models/conversations';
 import * as Bytes from '../Bytes';
 import { uuidToBytes, bytesToUuid } from '../Crypto';
@@ -76,7 +76,6 @@ import { getOwn } from '../util/getOwn';
 import { isNormalNumber } from '../util/isNormalNumber';
 import * as durations from '../util/durations';
 import { handleMessageSend } from '../util/handleMessageSend';
-import { isAlpha, isBeta } from '../util/version';
 import {
   fetchMembershipProof,
   getMembershipList,
@@ -259,11 +258,7 @@ export class CallingClass {
     this.previousAudioDeviceModule = parseAudioDeviceModule(
       window.storage.get('previousAudioDeviceModule')
     );
-    this.currentAudioDeviceModule =
-      OS.isWindows() &&
-      (isAlpha(window.getVersion()) || isBeta(window.getVersion()))
-        ? AudioDeviceModule.WindowsAdm2
-        : AudioDeviceModule.Default;
+    this.currentAudioDeviceModule = getAudioDeviceModule();
     window.storage.put(
       'previousAudioDeviceModule',
       this.currentAudioDeviceModule