improve media control logic

Author: kavishdevar

android/app/src/main/java/me/kavishdevar/aln/services/AirPodsService.kt

@@ -459,6 +459,7 @@ class AirPodsService: Service() {
                                     )
                                     var justEnabledA2dp = false
                                     earReceiver = object : BroadcastReceiver() {
+                                        @SuppressLint("NewApi")
                                         override fun onReceive(context: Context, intent: Intent) {
                                             val data = intent.getByteArrayExtra("data")
                                             if (data != null && earDetectionEnabled) {
@@ -516,15 +517,41 @@ class AirPodsService: Service() {
                                                     disconnectAudio(this@AirPodsService, device)
                                                 }
 
+                                                if (inEarData.contains(false) && newInEarData == listOf(
+                                                        true,
+                                                        true
+                                                    )
+                                                ) {
+                                                    Log.d("AirPods Parser", "User put in both AirPods from just one.")
+                                                    MediaController.userPlayedTheMedia = false
+                                                }
+                                                if (newInEarData.contains(false) && inEarData == listOf(
+                                                        true,
+                                                        true
+                                                    )
+                                                ) {
+                                                    Log.d("AirPods Parser", "User took one of two out.")
+                                                    MediaController.userPlayedTheMedia = false
+                                                }
+
+                                                if (newInEarData.sorted() == inEarData.sorted()) {
+                                                    return
+                                                }
+
                                                 inEarData = newInEarData
 
                                                 if (inEar == true) {
                                                     if (!justEnabledA2dp) {
                                                         justEnabledA2dp = false
+//                                                        if (audioManager.activePlaybackConfigurations.any { it.audioDeviceInfo?.address == device.address }) {
                                                         MediaController.sendPlay()
+                                                        MediaController.iPausedTheMedia = false
+//                                                        }
                                                     }
                                                 } else {
-                                                    MediaController.sendPause()
+//                                                    if (audioManager.activePlaybackConfigurations.any { it.audioDeviceInfo?.address == device.address }) {
+                                                        MediaController.sendPause()
+//                                                    }
                                                 }
                                             }
                                         }

android/app/src/main/java/me/kavishdevar/aln/utils/MediaController.kt

@@ -20,21 +20,43 @@
 package me.kavishdevar.aln.utils
 
 import android.media.AudioManager
+import android.media.AudioPlaybackConfiguration
+import android.os.Handler
+import android.os.Looper
 import android.util.Log
 import android.view.KeyEvent
 
 object MediaController {
-    private var initialVolume: Int? = null  // Nullable to track the unset state
-    private lateinit var audioManager: AudioManager  // Declare AudioManager
+    private var initialVolume: Int? = null
+    private lateinit var audioManager: AudioManager
+    var iPausedTheMedia = false
+    var userPlayedTheMedia = false
 
-    // Initialize the singleton with the AudioManager instance
     fun initialize(audioManager: AudioManager) {
         this.audioManager = audioManager
+        audioManager.registerAudioPlaybackCallback(cb, null)
+    }
+
+    val cb = object : AudioManager.AudioPlaybackCallback() {
+        override fun onPlaybackConfigChanged(configs: MutableList<AudioPlaybackConfiguration>?) {
+            super.onPlaybackConfigChanged(configs)
+            Log.d("MediaController", "Playback config changed, iPausedTheMedia: $iPausedTheMedia")
+            if (configs != null && !iPausedTheMedia) {
+                Log.d("MediaController", "Seems like the user changed the state of media themselves, now I won't `play` until the ear detection pauses it.")
+                Handler(Looper.getMainLooper()).postDelayed({
+                    iPausedTheMedia = !audioManager.isMusicActive
+                    userPlayedTheMedia = audioManager.isMusicActive
+                }, 7) // i have no idea why, but android sends a pause event a hundred times after the user does something.
+            }
+        }
     }
 
     @Synchronized
     fun sendPause() {
-        if (audioManager.isMusicActive) {
+        Log.d("MediaController", "Sending pause with iPausedTheMedia: $iPausedTheMedia, userPlayedTheMedia: $userPlayedTheMedia")
+        if (audioManager.isMusicActive && !userPlayedTheMedia) {
+            iPausedTheMedia = true
+            userPlayedTheMedia = false
             audioManager.dispatchMediaKeyEvent(
                 KeyEvent(
                     KeyEvent.ACTION_DOWN,
@@ -52,7 +74,10 @@ object MediaController {
 
     @Synchronized
     fun sendPlay() {
-        if (!audioManager.isMusicActive) {
+        Log.d("MediaController", "Sending play with iPausedTheMedia: $iPausedTheMedia")
+        if (iPausedTheMedia) {
+            Log.d("MediaController", "Sending play and setting userPlayedTheMedia to false")
+            userPlayedTheMedia = false
             audioManager.dispatchMediaKeyEvent(
                 KeyEvent(
                     KeyEvent.ACTION_DOWN,
@@ -76,8 +101,7 @@ object MediaController {
             Log.d("MediaController", "Initial Volume Set: $initialVolume")
             audioManager.setStreamVolume(
                 AudioManager.STREAM_MUSIC,
-                audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC) * 1 / 12,  // Set to a lower volume when speaking starts
-                0
+                audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC) * 1 / 12, 0
             )
         }
         Log.d("MediaController", "Initial Volume: $initialVolume")
@@ -91,4 +115,5 @@ object MediaController {
             initialVolume = null  // Reset to null after restoring the volume
         }
     }
+
 }

android/gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 accompanistPermissions = "0.36.0"
-agp = "8.7.2"
+agp = "8.7.3"
 hiddenapibypass = "4.3"
 kotlin = "2.0.0"
 coreKtx = "1.15.0"

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Mon Oct 07 22:30:36 IST 2024
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists