Added a logger for Android Auto connection state + do not use bluetooth sound card as playback device for voice recordings when connected to Auto

app/build.gradle.kts

@@ -175,6 +175,7 @@ dependencies {
     implementation(libs.androidx.navigation.fragment.ktx)
     implementation(libs.androidx.navigation.ui.ktx)
     implementation(libs.androidx.emoji2)
+    implementation(libs.androidx.car)
 
     // https://github.com/google/flexbox-layout/blob/main/LICENSE Apache v2.0
     implementation(libs.google.flexbox)

app/src/main/java/org/linphone/core/CoreContext.kt

@@ -75,6 +75,8 @@ class CoreContext @UiThread constructor(val context: Context) : HandlerThread("C
     var bearerAuthInfoPendingPasswordUpdate: AuthInfo? = null
     var digestAuthInfoPendingPasswordUpdate: AuthInfo? = null
 
+    var isConnectedToAndroidAuto: Boolean = false
+
     val bearerAuthenticationRequestedEvent: MutableLiveData<Event<Pair<String, String?>>> by lazy {
         MutableLiveData<Event<Pair<String, String?>>>()
     }

app/src/main/java/org/linphone/ui/main/MainActivity.kt

@@ -31,6 +31,7 @@ import android.os.Parcelable
 import android.view.Gravity
 import android.view.ViewTreeObserver
 import androidx.annotation.UiThread
+import androidx.car.app.connection.CarConnection
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.databinding.DataBindingUtil
 import androidx.lifecycle.ViewModelProvider
@@ -243,6 +244,18 @@ class MainActivity : GenericActivity() {
                 showRedToast(message, icon)
             }
         }
+
+        CarConnection(this).type.observe(this) {
+            val asString = when (it) {
+                CarConnection.CONNECTION_TYPE_NOT_CONNECTED -> "NOT CONNECTED"
+                CarConnection.CONNECTION_TYPE_PROJECTION -> "PROJECTION"
+                CarConnection.CONNECTION_TYPE_NATIVE -> "NATIVE"
+                else -> "UNEXPECTED ($it)"
+            }
+            Log.i("$TAG Car connection is [$asString]")
+            val projection = it == CarConnection.CONNECTION_TYPE_PROJECTION
+            coreContext.isConnectedToAndroidAuto = projection
+        }
     }
 
     override fun onPostCreate(savedInstanceState: Bundle?) {

app/src/main/java/org/linphone/utils/AudioUtils.kt

@@ -197,7 +197,17 @@ class AudioUtils {
             Log.i(
                 "$TAG Found headset/headphones/hearingAid sound card [$headphonesCard], bluetooth sound card [$bluetoothCard], speaker sound card [$speakerCard] and earpiece sound card [$earpieceCard]"
             )
-            return headphonesCard ?: bluetoothCard ?: speakerCard ?: earpieceCard
+            return if (coreContext.isConnectedToAndroidAuto) {
+                Log.w(
+                    "$TAG Device seems to be connected to Android Auto, do not use bluetooth sound card, priority order is headphone > speaker > earpiece"
+                )
+                headphonesCard ?: speakerCard ?: earpieceCard
+            } else {
+                Log.i(
+                    "$TAG Device doesn't seem to be connected to Android Auto, use headphone > bluetooth > speaker > earpiece sound card in priority order"
+                )
+                headphonesCard ?: bluetoothCard ?: speakerCard ?: earpieceCard
+            }
         }
 
         @WorkerThread

gradle/libs.versions.toml

@@ -21,6 +21,7 @@ gridlayout = "1.0.0"
 securityCryptoKtx = "1.1.0-alpha06"
 navigation = "2.7.7"
 emoji2 = "1.4.0"
+car = "1.7.0-alpha02"
 flexbox = "3.0.0"
 material = "1.11.0"
 protobuf = "3.22.3"
@@ -47,6 +48,7 @@ androidx-security-crypto-ktx = { group = "androidx.security", name = "security-c
 androidx-navigation-fragment-ktx = { group = "androidx.navigation", name = "navigation-fragment-ktx", version.ref = "navigation" }
 androidx-navigation-ui-ktx = { group = "androidx.navigation", name = "navigation-ui-ktx", version.ref = "navigation" }
 androidx-emoji2 = { group = "androidx.emoji2", name = "emoji2-emojipicker", version.ref = "emoji2" }
+androidx-car = { group = "androidx.car.app", name = "app", version.ref = "car" }
 
 google-firebase-bom = { module = "com.google.firebase:firebase-bom", version.ref = "firebaseBomVersion" }
 google-firebase-messaging = { group = "com.google.firebase", name = "firebase-messaging" }