[Video] More tweaks to AVAudioSession options (#4910)

modules/expo-bluesky-swiss-army/index.ts

@@ -1,6 +1,7 @@
 import * as PlatformInfo from './src/PlatformInfo'
+import {AudioCategory} from './src/PlatformInfo/types'
 import * as Referrer from './src/Referrer'
 import * as SharedPrefs from './src/SharedPrefs'
 import VisibilityView from './src/VisibilityView'
 
-export {PlatformInfo, Referrer, SharedPrefs, VisibilityView}
+export {AudioCategory, PlatformInfo, Referrer, SharedPrefs, VisibilityView}

modules/expo-bluesky-swiss-army/ios/PlatformInfo/ExpoPlatformInfoModule.swift

@@ -8,14 +8,26 @@ public class ExpoPlatformInfoModule: Module {
       return UIAccessibility.isReduceMotionEnabled
     }
 
+    Function("setAudioCategory") { (audioCategoryString: String) in
+      let audioCategory = AVAudioSession.Category(rawValue: audioCategoryString)
+      try? AVAudioSession.sharedInstance().setCategory(audioCategory)
+    }
+
     Function("setAudioMixWithOthers") { (mixWithOthers: Bool) in
       var options: AVAudioSession.CategoryOptions
+      let currentCategory = AVAudioSession.sharedInstance().category
       if mixWithOthers {
         options = [.mixWithOthers]
       } else {
-        options = []
+        options = [.duckOthers]
       }
-      try? AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback, mode: .default, options: options)
+      try? AVAudioSession
+        .sharedInstance()
+        .setCategory(
+          currentCategory,
+          mode: .default,
+          options: options
+        )
     }
   }
 }

modules/expo-bluesky-swiss-army/src/PlatformInfo/index.native.ts

@@ -1,6 +1,8 @@
 import {Platform} from 'react-native'
 import {requireNativeModule} from 'expo-modules-core'
 
+import {AudioCategory} from './types'
+
 const NativeModule = requireNativeModule('ExpoPlatformInfo')
 
 export function getIsReducedMotionEnabled(): boolean {
@@ -11,3 +13,8 @@ export function setAudioMixWithOthers(mixWithOthers: boolean): void {
   if (Platform.OS !== 'ios') return
   NativeModule.setAudioMixWithOthers(mixWithOthers)
 }
+
+export function setAudioCategory(audioCategory: AudioCategory): void {
+  if (Platform.OS !== 'ios') return
+  NativeModule.setAudioCategory(audioCategory)
+}

modules/expo-bluesky-swiss-army/src/PlatformInfo/index.ts

@@ -1,9 +1,23 @@
 import {NotImplementedError} from '../NotImplemented'
+import {AudioCategory} from './types'
 
 export function getIsReducedMotionEnabled(): boolean {
   throw new NotImplementedError()
 }
 
+/**
+ * Set whether the app's audio should mix with other apps' audio.
+ * @param mixWithOthers
+ */
 export function setAudioMixWithOthers(mixWithOthers: boolean): void {
   throw new NotImplementedError({mixWithOthers})
 }
+
+/**
+ * Set the audio category for the app.
+ * @param audioCategory
+ * @platform ios
+ */
+export function setAudioCategory(audioCategory: AudioCategory): void {
+  throw new NotImplementedError({audioCategory})
+}

modules/expo-bluesky-swiss-army/src/PlatformInfo/index.web.ts

@@ -1,4 +1,5 @@
 import {NotImplementedError} from '../NotImplemented'
+import {AudioCategory} from './types'
 
 export function getIsReducedMotionEnabled(): boolean {
   if (typeof window === 'undefined') {
@@ -10,3 +11,7 @@ export function getIsReducedMotionEnabled(): boolean {
 export function setAudioMixWithOthers(mixWithOthers: boolean): void {
   throw new NotImplementedError({mixWithOthers})
 }
+
+export function setAudioCategory(audioCategory: AudioCategory): void {
+  throw new NotImplementedError({audioCategory})
+}

modules/expo-bluesky-swiss-army/src/PlatformInfo/types.ts

@@ -0,0 +1,15 @@
+/**
+ * Sets the audio session category on iOS. In general, we should only need to use this for the `playback` and `ambient`
+ * categories. This enum however includes other categories that are available in the native API for clarity and
+ * potential future use.
+ * @see https://developer.apple.com/documentation/avfoundation/avaudiosession/category
+ * @platform ios
+ */
+export enum AudioCategory {
+  Ambient = 'AVAudioSessionCategoryAmbient',
+  Playback = 'AVAudioSessionCategoryPlayback',
+  _SoloAmbient = 'AVAudioSessionCategorySoloAmbient',
+  _Record = 'AVAudioSessionCategoryRecord',
+  _PlayAndRecord = 'AVAudioSessionCategoryPlayAndRecord',
+  _MultiRoute = 'AVAudioSessionCategoryMultiRoute',
+}