More speakerphone and call related enhancements for API 31+

app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt

@@ -637,8 +637,6 @@ class BaresipService: Service() {
                         if (call!!.status == "transferring")
                             break
                         stopMediaPlayer()
-                        if (am.mode != AudioManager.MODE_IN_COMMUNICATION)
-                            am.mode = AudioManager.MODE_IN_COMMUNICATION
                         requestAudioFocus(AudioAttributes.CONTENT_TYPE_SPEECH)
                         setCallVolume()
                         proximitySensing(true)
@@ -879,7 +877,6 @@ class BaresipService: Service() {
                             call.remove()
                             if (Call.calls().size == 0) {
                                 resetCallVolume()
-                                Utils.setSpeakerPhone(am, false)
                                 am.mode = AudioManager.MODE_NORMAL
                                 am.stopBluetoothSco()
                                 abandonAudioFocus()

app/src/main/kotlin/com/tutpro/baresip/Call.kt

@@ -112,5 +112,11 @@ class Call(val callp: Long, val ua: UserAgent, val peerUri: String, val dir: Str
             return null
         }
 
+        fun connectedCall(): Call? {
+            for (c in BaresipService.calls.reversed())
+                if (c.status == "connected") return c
+            return null
+        }
+
     }
 }

app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt

@@ -10,6 +10,7 @@ import android.content.*
 import android.content.Intent.ACTION_CALL
 import android.content.pm.PackageManager
 import android.content.res.Configuration.ORIENTATION_PORTRAIT
+import android.media.AudioDeviceInfo
 import android.media.AudioManager
 import android.net.Uri
 import android.os.*
@@ -85,11 +86,13 @@ class MainActivity : AppCompatActivity() {
     private lateinit var restoreRequest: ActivityResultLauncher<Intent>
     private lateinit var contactsRequest: ActivityResultLauncher<Intent>
     private lateinit var callsRequest: ActivityResultLauncher<Intent>
+    private lateinit var comDevChangedListener: AudioManager.OnCommunicationDeviceChangedListener
 
     private var callHandler: Handler = Handler(Looper.getMainLooper())
     private var callRunnable: Runnable? = null
     private var downloadsInputUri: Uri? = null
     private var downloadsOutputUri: Uri? = null
+    private var audioModeChangedListener: AudioManager.OnModeChangedListener? = null
 
     private lateinit var baresipService: Intent
 
@@ -188,6 +191,21 @@ class MainActivity : AppCompatActivity() {
             addAction(Intent.ACTION_SCREEN_ON)
         })
 
+        if (Build.VERSION.SDK_INT >= 31) {
+            comDevChangedListener = AudioManager.OnCommunicationDeviceChangedListener { device ->
+                if (device != null) {
+                    Log.d(TAG, "Com device changed to type ${device.type} in mode ${am.mode}")
+                    if (speakerIcon != null) {
+                        if (device.type == AudioDeviceInfo.TYPE_BUILTIN_SPEAKER)
+                            speakerIcon!!.setIcon(R.drawable.speaker_on)
+                        else
+                            speakerIcon!!.setIcon(R.drawable.speaker_off)
+                    }
+                }
+            }
+            am.addOnCommunicationDeviceChangedListener(mainExecutor, comDevChangedListener)
+        }
+
         uaAdapter = UaSpinnerAdapter(applicationContext, BaresipService.uas)
         aorSpinner.adapter = uaAdapter
         aorSpinner.setSelection(-1)
@@ -340,6 +358,7 @@ class MainActivity : AppCompatActivity() {
 
         hangupButton.setOnClickListener {
             val ua = BaresipService.uas[aorSpinner.selectedItemPosition]
+            if (Build.VERSION.SDK_INT < 31) {
                 if (callRunnable != null && callHandler.hasCallbacks(callRunnable!!)) {
                     callHandler.removeCallbacks(callRunnable!!)
                     callRunnable = null
@@ -347,6 +366,15 @@ class MainActivity : AppCompatActivity() {
                     showCall(ua)
                     return@setOnClickListener
                 }
+            } else {
+                if (audioModeChangedListener != null) {
+                    am.removeOnModeChangedListener(audioModeChangedListener!!)
+                    audioModeChangedListener = null
+                    am.mode = AudioManager.MODE_NORMAL
+                    showCall(ua)
+                    return@setOnClickListener
+                }
+            }
             val aor = ua.account.aor
             val uaCalls = ua.calls()
             if (uaCalls.size > 0) {
@@ -744,6 +772,8 @@ class MainActivity : AppCompatActivity() {
         super.onDestroy()
         Log.d(TAG, "Main onDestroy")
         this.unregisterReceiver(screenEventReceiver)
+        if (Build.VERSION.SDK_INT >= 31)
+            am.removeOnCommunicationDeviceChangedListener(comDevChangedListener)
         BaresipService.serviceEvent.removeObserver(serviceEventObserver)
         BaresipService.serviceEvents.clear()
         BaresipService.activities.clear()
@@ -1234,13 +1264,7 @@ class MainActivity : AppCompatActivity() {
             }
 
             R.id.speakerIcon -> {
-                Utils.toggleSpeakerPhone(am)
+                Utils.toggleSpeakerPhone(mainExecutor, am)
-                Handler(Looper.getMainLooper()).postDelayed({
-                    if (Utils.isSpeakerPhoneOn(am))
-                        item.setIcon(R.drawable.speaker_on)
-                    else
-                        item.setIcon(R.drawable.speaker_off)
-                }, 750)
             }
 
             R.id.config -> {
@@ -1783,12 +1807,13 @@ class MainActivity : AppCompatActivity() {
                     )
                 } else {
                     callUri.isFocusable = false
-                    am.mode = AudioManager.MODE_IN_COMMUNICATION
                     uaAdapter.notifyDataSetChanged()
                     callButton.visibility = View.INVISIBLE
                     callButton.isEnabled = false
                     hangupButton.visibility = View.VISIBLE
                     hangupButton.isEnabled = true
+                    if (Build.VERSION.SDK_INT < 31) {
+                        am.mode = AudioManager.MODE_IN_COMMUNICATION
                         callRunnable = Runnable {
                             if (!call(ua, uri)) {
                                 callButton.visibility = View.VISIBLE
@@ -1798,6 +1823,30 @@ class MainActivity : AppCompatActivity() {
                             }
                         }
                         callHandler.postDelayed(callRunnable!!, 1000)
+                    } else {
+                        audioModeChangedListener = AudioManager.OnModeChangedListener { mode ->
+                            if (mode == AudioManager.MODE_IN_COMMUNICATION) {
+                                Log.d(TAG, "Audio mode changed to MODE_IN_COMMUNICATION using " +
+                                        "device ${am.communicationDevice!!.type}")
+                                if (audioModeChangedListener != null) {
+                                    am.removeOnModeChangedListener(audioModeChangedListener!!)
+                                    audioModeChangedListener = null
+                                }
+                                if (!call(ua, uri)) {
+                                    callButton.visibility = View.VISIBLE
+                                    callButton.isEnabled = true
+                                    hangupButton.visibility = View.INVISIBLE
+                                    hangupButton.isEnabled = false
+                                }
+                            } else {
+                                Log.d(TAG, "Audio mode changed to MODE_NORMAL using " +
+                                    "device ${am.communicationDevice!!.type}")
+                            }
+                        }
+                        am.addOnModeChangedListener(mainExecutor, audioModeChangedListener!!)
+                        Log.d(TAG, "Setting audio mode to MODE_IN_COMMUNICATION")
+                        am.mode = AudioManager.MODE_IN_COMMUNICATION
+                    }
                 }
             } else {
                 val latestPeerUri = NewCallHistory.aorLatestPeerUri(aor)

app/src/main/kotlin/com/tutpro/baresip/Utils.kt

@@ -41,6 +41,7 @@ import java.net.SocketException
 import java.security.SecureRandom
 import java.text.DateFormat
 import java.util.*
+import java.util.concurrent.Executor
 import java.util.zip.ZipEntry
 import java.util.zip.ZipFile
 import java.util.zip.ZipOutputStream
@@ -897,9 +898,10 @@ object Utils {
             am.isSpeakerphoneOn
     }
 
-    fun setSpeakerPhone(am: AudioManager, enabled: Boolean) {
+    private fun setSpeakerPhone(executor: Executor, am: AudioManager, enable: Boolean) {
-        // Currently at API levels 31+, speakerphone cannot be turned on during call
+        if (enable == isSpeakerPhoneOn(am))
-        if (enabled) {
+            return
+        if (enable) {
             if (Build.VERSION.SDK_INT >= 31) {
                 Log.d(TAG, "Setting current device from ${am.communicationDevice!!.type} to " +
                     "${AudioDeviceInfo.TYPE_BUILTIN_SPEAKER} in mode ${am.mode}")
@@ -910,12 +912,25 @@ object Utils {
                         break
                     }
                 if (speakerDevice != null) {
-                    am.mode = AudioManager.MODE_NORMAL
+                    if (am.mode == AudioManager.MODE_NORMAL) {
-                    Handler(Looper.getMainLooper()).postDelayed({
                         if (!am.setCommunicationDevice(speakerDevice))
                             Log.e(TAG, "Could not turn on speaker device")
                         Log.d(TAG, "Type of current device is ${am.communicationDevice!!.type}")
-                    }, 500)
+                    } else {
+                        // Currently at API levels 31+, speakerphone needs to be turned on in normal mode
+                        val normalListener = object : AudioManager.OnModeChangedListener {
+                            override fun onModeChanged(mode: Int) {
+                                if (mode == AudioManager.MODE_NORMAL) {
+                                    am.removeOnModeChangedListener(this)
+                                    if (!am.setCommunicationDevice(speakerDevice))
+                                        Log.e(TAG, "Could not turn on speaker device")
+                                    Log.d(TAG, "Type of current device is ${am.communicationDevice!!.type}")
+                                }
+                            }
+                        }
+                        am.addOnModeChangedListener(executor, normalListener)
+                        am.mode = AudioManager.MODE_NORMAL
+                    }
                 }
             } else {
                 am.isSpeakerphoneOn = true
@@ -925,17 +940,10 @@ object Utils {
             if (Build.VERSION.SDK_INT >= 31) {
                 Log.d(TAG, "Setting current device from type ${am.communicationDevice!!.type} to " +
                         "${AudioDeviceInfo.TYPE_BUILTIN_EARPIECE} in mode ${am.mode}")
-                var earDevice: AudioDeviceInfo? = null
+                am.clearCommunicationDevice()
-                for (device in am.availableCommunicationDevices)
+                // Restore communication mode
-                    if (device.type == AudioDeviceInfo.TYPE_BUILTIN_EARPIECE) {
+                if (Call.connectedCall() != null && am.mode == AudioManager.MODE_NORMAL)
-                        earDevice = device
-                        break
-                    }
-                if (earDevice != null) {
-                    if (!am.setCommunicationDevice(earDevice))
-                        Log.e(TAG, "Could not turn on earpiece device")
                     am.mode = AudioManager.MODE_IN_COMMUNICATION
-                }
                 Log.d(TAG, "Type of current device is ${am.communicationDevice!!.type}")
             } else {
                 am.isSpeakerphoneOn = false
@@ -944,11 +952,11 @@ object Utils {
         }
     }
 
-    fun toggleSpeakerPhone(am: AudioManager) {
+    fun toggleSpeakerPhone(executor: Executor, am: AudioManager) {
         if (Build.VERSION.SDK_INT >= 31)
-            setSpeakerPhone(am,
+            setSpeakerPhone(executor, am,
                 am.communicationDevice!!.type == AudioDeviceInfo.TYPE_BUILTIN_EARPIECE)
         else
-            setSpeakerPhone(am, !am.isSpeakerphoneOn)
+            setSpeakerPhone(executor, am, !am.isSpeakerphoneOn)
     }
 }