Added check if hardware AEC is available

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

@@ -121,4 +121,6 @@ object Api {
     external fun module_load(module: String): Int
     external fun module_unload(module: String)
 
+    external fun create_AAudio_SessionId(): Int
+
 }

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

@@ -151,6 +151,12 @@ class AudioActivity : AppCompatActivity() {
         aec = binding.Aec
         oldAec = modules.contains("webrtc_aecm.so")
         aec.isChecked = oldAec
+        aec.setOnClickListener {
+            if (!aec.isChecked)
+                if (!Utils.isAecSupported())
+                    Utils.alertView(this, getString(R.string.notice),
+                        getString(R.string.no_hw_aec))
+        }
 
         audioDelay = binding.AudioDelay
         audioDelay.setText("${BaresipService.audioDelay}")

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

@@ -440,8 +440,7 @@ class BaresipService: Service() {
                 activeNetwork = cm.activeNetwork
                 Log.i(TAG, "Active network: $activeNetwork")
 
-                Log.d(TAG, "AEC/AGC/NS available = " +
-                        "$aecAvailable/$agcAvailable/$nsAvailable")
+                Log.d(TAG, "AGC/NS available = $agcAvailable/$nsAvailable")
 
                 val userAgent = Config.variable("user_agent")
                 Thread {
@@ -835,7 +834,7 @@ class BaresipService: Service() {
                             am.mode = MODE_IN_COMMUNICATION
                         call!!.status = "connected"
                         if (recorderSessionId != 0) {
-                            if (aecAvailable && !webrtcAec) {
+                            if (Utils.isAecSupported() && !webrtcAec) {
                                 aec = AcousticEchoCanceler.create(recorderSessionId)
                                 if (aec != null) {
                                     if (!aec!!.getEnabled()) {
@@ -845,9 +844,11 @@ class BaresipService: Service() {
                                         else
                                             Log.w(TAG, "Failed to enable AEC")
                                     }
-                                }
-                                else
-                                    Log.w(TAG, "Failed to create AEC")
+                                } else
+                                    Log.w(
+                                        TAG, "Failed to create AEC for session " +
+                                                "$recorderSessionId"
+                                    )
                             }
                             if (agcAvailable) {
                                 agc = AutomaticGainControl.create(recorderSessionId)
@@ -857,8 +858,7 @@ class BaresipService: Service() {
                                         if (agc!!.getEnabled())
                                             Log.d(TAG, "AGC is enabled")
                                     }
-                                }
-                                else
+                                } else
                                     Log.w(TAG, "Failed to create AGC")
                             }
                             if (nsAvailable) {
@@ -869,8 +869,7 @@ class BaresipService: Service() {
                                         if (ns!!.getEnabled())
                                             Log.d(TAG, "ns is enabled")
                                     }
-                                }
-                                else
+                                } else
                                     Log.w(TAG, "Failed to create NS")
                             }
                             recorderSessionId = 0
@@ -1618,7 +1617,6 @@ class BaresipService: Service() {
         // <aor, password> of those accounts that have auth username without auth password
         val aorPasswords = mutableMapOf<String, String>()
         var audioFocusRequest: AudioFocusRequestCompat? = null
-        var aecAvailable = AcousticEchoCanceler.isAvailable()
         var agcAvailable = AutomaticGainControl.isAvailable()
         private val nsAvailable = NoiseSuppressor.isAvailable()
         private var aec: AcousticEchoCanceler? = null
@@ -1646,6 +1644,7 @@ class BaresipService: Service() {
                 .build()
             if (AudioManagerCompat.requestAudioFocus(am, audioFocusRequest!!) == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
                 Log.d(TAG, "requestAudioFocus granted")
+                am.mode = MODE_IN_COMMUNICATION
                 if (isBluetoothHeadsetConnected(ctx))
                     startBluetoothSco(ctx, 250L, 3)
             } else {

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

@@ -153,7 +153,8 @@ object Config {
             if ("${module}.so" in previousModules)
                 config = "${config}module ${module}.so\n"
 
-        if ("webrtc_aecm.so" in previousModules || !File(configPath).exists()) {
+        if ((!Utils.isAecSupported() && !File(configPath).exists()) ||
+                "webrtc_aecm.so" in previousModules) {
             config = "${config}module webrtc_aecm.so\n"
             BaresipService.webrtcAec = true
         }

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

@@ -26,6 +26,7 @@ import android.widget.TextView
 import android.media.AudioDeviceInfo
 import android.media.AudioManager
 import android.media.MediaPlayer
+import android.media.audiofx.AcousticEchoCanceler
 import android.os.*
 import androidx.activity.result.ActivityResultLauncher
 import androidx.annotation.RequiresApi
@@ -1047,4 +1048,27 @@ object Utils {
                 Configuration.UI_MODE_NIGHT_MASK == Configuration.UI_MODE_NIGHT_YES
     }
 
+    fun isAecSupported(): Boolean {
+        if (!AcousticEchoCanceler.isAvailable()) {
+            Log.i(TAG, "Hardware AEC is NOT available")
+            return false
+        }
+
+        val sessionId = Api.create_AAudio_SessionId()
+        if (sessionId == -1) {
+            Log.e(TAG, "Failed to create AAudio stream for session ID")
+            return false
+        }
+
+        val aec = AcousticEchoCanceler.create(sessionId)
+        return if (aec != null) {
+            aec.release() // Clean up the AEC instance
+            Log.i(TAG, "Hardware AEC is supported")
+            true
+        } else {
+            Log.w(TAG, "Hardware AEC is NOT supported")
+            false
+        }
+    }
+
 }

app/src/main/res/values-fi/strings.xml

@@ -365,8 +365,8 @@
     </string>
     <string name="failed_to_load_module">Modulin lataaminen epäonnistui.</string>
     <string name="aec">Akustinen kaiun poisto (AKP)</string>
-    <string name="aec_help">Jos merkitty, kaikua yritetään poistaa ohjelmiston avulla
-        puheluiden aikana.</string>
+    <string name="aec_help">Jos merkitty, kaikua yritetään poistaa ohjelmiston avulla.</string>
+    <string name="no_hw_aec">Laitteellasi ei voida poistaa kaikua laitteiston avulla.</string>
     <string name="aec_extended_filter">AKP laajennettu suodatin</string>
     <string name="microphone_gain">Mikrofonin äänikerroin</string>
     <string name="microphone_gain_help">Kertoo mikrofonin äänen voimakkuuden tällä desimaaliluvulla.

app/src/main/res/values/strings.xml

@@ -340,7 +340,8 @@
         available for use by the accounts.</string>
     <string name="failed_to_load_module">Failed to load module.</string>
     <string name="aec">Acoustic Echo Cancellation</string>
-    <string name="aec_help">If checked, software echo cancellation is attempted on call audio.</string>
+    <string name="aec_help">If checked, software based echo cancellation is in use.</string>
+    <string name="no_hw_aec">Hardware based echo canceller cannot be used on you device.</string>
     <string name="aec_extended_filter">AEC Extended Filter</string>
     <string name="aec_extended_filter_help">If checked, echo cancellation is using extended filter.</string>
     <string name="microphone_gain">Microphone Gain</string>