fix: reuse audio context

packages/hms-video-store/src/audio-sink-manager/AudioSinkManager.ts

@@ -5,6 +5,7 @@ import { ErrorFactory } from '../error/ErrorFactory';
 import { HMSAction } from '../error/HMSAction';
 import { EventBus } from '../events/EventBus';
 import { HMSDeviceChangeEvent, HMSTrackUpdate, HMSUpdateListener } from '../interfaces';
+import { HMSAudioContextHandler } from '../internal';
 import { HMSRemoteAudioTrack } from '../media/tracks';
 import { HMSRemotePeer } from '../sdk/models/peer';
 import { Store } from '../sdk/store';
@@ -72,6 +73,7 @@ export class AudioSinkManager {
    */
   async unblockAutoplay() {
     if (this.autoPausedTracks.size > 0) {
+      HMSAudioContextHandler.resumeContext();
       this.unpauseAudioTracks();
     }
   }

packages/hms-video-store/src/plugins/audio/HMSAudioPluginsManager.ts

@@ -4,17 +4,13 @@ import AnalyticsEventFactory from '../../analytics/AnalyticsEventFactory';
 import { ErrorFactory } from '../../error/ErrorFactory';
 import { HMSAction } from '../../error/HMSAction';
 import { EventBus } from '../../events/EventBus';
+import { HMSAudioContextHandler } from '../../internal';
 import { HMSLocalAudioTrack } from '../../media/tracks';
 import Room from '../../sdk/models/HMSRoom';
 import HMSLogger from '../../utils/logger';
 
 const DEFAULT_SAMPLE_RATE = 48000;
 
-//Handling sample rate error in case of firefox
-const checkBrowserSupport = () => {
-  return navigator.userAgent.indexOf('Firefox') !== -1;
-};
-
 /**
  * This class manages applying different plugins on a local audio track. Plugins which need to modify the audio
  * are called in the order they were added. Plugins which do not need to modify the audio are called
@@ -48,7 +44,7 @@ export class HMSAudioPluginsManager {
     this.hmsTrack = track;
     this.pluginsMap = new Map();
     this.analytics = new AudioPluginsAnalytics(eventBus);
-    this.createAudioContext();
+    this.audioContext = HMSAudioContextHandler.getAudioContext({ sampleRate: DEFAULT_SAMPLE_RATE });
     this.room = room;
   }
 
@@ -282,19 +278,4 @@ export class HMSAudioPluginsManager {
     plugin.stop();
     this.analytics.removed(name);
   }
-
-  private createAudioContext() {
-    if (!this.audioContext) {
-      if (checkBrowserSupport()) {
-        /**
-        Not setting default sample rate for firefox since connecting
-        audio nodes from context with different sample rate is not
-        supported in firefox
- */
-        this.audioContext = new AudioContext();
-      } else {
-        this.audioContext = new AudioContext({ sampleRate: DEFAULT_SAMPLE_RATE });
-      }
-    }
-  }
 }

packages/hms-video-store/src/reactive-store/HMSSDKActions.ts

@@ -1534,24 +1534,29 @@ export class HMSSDKActions<T extends HMSGenericTypes = { sessionStore: Record<st
     }
   }
 
+  //eslint-disable-next-line complexity
   private async addRemoveAudioPlugin(plugin: HMSAudioPlugin, action: 'add' | 'remove') {
-    if (!plugin) {
-      HMSLogger.w('Invalid plugin received in store');
-      return;
-    }
-    const trackID = this.store.getState(selectLocalAudioTrackID);
-    if (trackID) {
-      const sdkTrack = this.getLocalTrack(trackID);
-      if (sdkTrack) {
-        if (action === 'add') {
-          await (sdkTrack as SDKHMSLocalAudioTrack).addPlugin(plugin);
-        } else if (action === 'remove') {
-          await (sdkTrack as SDKHMSLocalAudioTrack).removePlugin(plugin);
+    try {
+      if (!plugin) {
+        HMSLogger.w('Invalid plugin received in store');
+        return;
+      }
+      const trackID = this.store.getState(selectLocalAudioTrackID);
+      if (trackID) {
+        const sdkTrack = this.getLocalTrack(trackID);
+        if (sdkTrack) {
+          if (action === 'add') {
+            await (sdkTrack as SDKHMSLocalAudioTrack).addPlugin(plugin);
+          } else if (action === 'remove') {
+            await (sdkTrack as SDKHMSLocalAudioTrack).removePlugin(plugin);
+          }
+          this.syncRoomState(`${action}AudioPlugin`);
+        } else {
+          this.logPossibleInconsistency(`track ${trackID} not present, unable to ${action} plugin`);
         }
-        this.syncRoomState(`${action}AudioPlugin`);
-      } else {
-        this.logPossibleInconsistency(`track ${trackID} not present, unable to ${action} plugin`);
       }
+    } catch (err) {
+      console.error(err);
     }
   }
 

packages/hms-video-store/src/utils/media.ts

@@ -1,4 +1,5 @@
 import HMSLogger from './logger';
+import { isFirefox } from './support';
 import { BuildGetMediaError } from '../error/utils';
 import { HMSTrackExceptionTrackType } from '../media/tracks/HMSTrackExceptionTrackType';
 
@@ -48,11 +49,24 @@ export interface HMSAudioContext {
   resumeContext: () => Promise<void>;
 }
 
-export const HMSAudioContextHandler: HMSAudioContext = {
+export const HMSAudioContextHandler: {
+  audioContext: AudioContext | null;
+  getAudioContext(options?: AudioContextOptions): AudioContext;
+  resumeContext(): Promise<void>;
+} = {
   audioContext: null,
-  getAudioContext() {
+  getAudioContext(options?: AudioContextOptions) {
     if (!this.audioContext) {
-      this.audioContext = new AudioContext();
+      if (isFirefox) {
+        /**
+         * Not setting default sample rate for firefox since connecting
+         * audio nodes from context with different sample rate is not
+         * supported in firefox
+         */
+        this.audioContext = new AudioContext();
+      } else {
+        this.audioContext = new AudioContext(options);
+      }
     }
     return this.audioContext;
   },