fix soundlevel for iOS

Author: truemagic-coder

ios/AudioSessionManager.swift

@@ -53,6 +53,7 @@ class AudioSessionManager: AudioSessionManaging {
     private var lastBufferTime: AVAudioTime?
     private var accumulatedData = Data()
     private var recentData = [Float]() // This property stores the recent audio data
+    private var lastSoundLevel: Float = -160.0 // Track the last calculated sound level
 
     weak var delegate: AudioStreamManagerDelegate?  // Define the delegate here
 
@@ -520,7 +521,7 @@ class AudioSessionManager: AudioSessionManaging {
         if !accumulatedData.isEmpty {
             let currentTime = Date()
             let recordingTime = currentTime.timeIntervalSince(startTime)
-            delegate?.audioStreamManager(self, didReceiveAudioData: accumulatedData, recordingTime: recordingTime, totalDataSize: totalDataSize)
+            delegate?.audioStreamManager(self, didReceiveAudioData: accumulatedData, recordingTime: recordingTime, totalDataSize: totalDataSize, soundLevel: lastSoundLevel)
             accumulatedData.removeAll()
         }
 
@@ -808,8 +809,12 @@ class AudioSessionManager: AudioSessionManaging {
             if let startTime = startTime {
                 let recordingTime = currentTime.timeIntervalSince(startTime)
                 let dataToProcess = accumulatedData
+                
+                // Calculate sound level from the working buffer
+                let soundLevel = AudioUtils.calculatePowerLevel(from: workingBuffer)
+                lastSoundLevel = soundLevel
 
-                delegate?.audioStreamManager(self, didReceiveAudioData: dataToProcess, recordingTime: recordingTime, totalDataSize: totalDataSize)
+                delegate?.audioStreamManager(self, didReceiveAudioData: dataToProcess, recordingTime: recordingTime, totalDataSize: totalDataSize, soundLevel: soundLevel)
 
                 self.lastEmissionTime = currentTime
                 self.lastEmittedSize = totalDataSize

ios/AudioStreamManagerDelegate.swift

@@ -1,3 +1,3 @@
 protocol AudioStreamManagerDelegate: AnyObject {
-    func audioStreamManager(_ manager: AudioSessionManager, didReceiveAudioData data: Data, recordingTime: TimeInterval, totalDataSize: Int64)
+    func audioStreamManager(_ manager: AudioSessionManager, didReceiveAudioData data: Data, recordingTime: TimeInterval, totalDataSize: Int64, soundLevel: Float)
 }

ios/ExpoPlayAudioStreamModule.swift

@@ -460,7 +460,8 @@ public class ExpoPlayAudioStreamModule: Module, AudioStreamManagerDelegate, Micr
     ///   - data: The received audio data.
     ///   - recordingTime: The current recording time.
     ///   - totalDataSize: The total size of the received audio data.
-    func audioStreamManager(_ manager: AudioSessionManager, didReceiveAudioData data: Data, recordingTime: TimeInterval, totalDataSize: Int64) {
+    ///   - soundLevel: The calculated sound level in dB.
+    func audioStreamManager(_ manager: AudioSessionManager, didReceiveAudioData data: Data, recordingTime: TimeInterval, totalDataSize: Int64, soundLevel: Float) {
         guard let fileURL = manager.recordingFileURL,
               let settings = manager.recordingSettings else { return }
 
@@ -484,7 +485,8 @@ public class ExpoPlayAudioStreamModule: Module, AudioStreamManagerDelegate, Micr
             "encoded": encodedData,
             "deltaSize": deltaSize,
             "totalSize": fileSize,
-            "mimeType": manager.mimeType
+            "mimeType": manager.mimeType,
+            "soundLevel": soundLevel
         ]
         // Emit the event to JavaScript
         sendEvent(audioDataEvent, eventBody)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "expo-streamer",
-  "version": "1.0.6",
+  "version": "1.0.7",
   "description": "Realtime Audio Streaming for Expo",
   "main": "build/index.js",
   "types": "build/index.d.ts",