From ae9812114093165453367c318b37953b50f21c92 Mon Sep 17 00:00:00 2001
From: Sylvain Berfini <sylvain.berfini@belledonne-communications.com>
Date: Fri, 28 Aug 2020 12:40:03 +0200
Subject: [PATCH] Prefer bluetooth audio route if available

---
 .../java/org/linphone/core/CoreContext.kt     | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/app/src/main/java/org/linphone/core/CoreContext.kt b/app/src/main/java/org/linphone/core/CoreContext.kt
index 76113aa9e..aa116c0c5 100644
--- a/app/src/main/java/org/linphone/core/CoreContext.kt
+++ b/app/src/main/java/org/linphone/core/CoreContext.kt
@@ -158,6 +158,10 @@ class CoreContext(val context: Context, coreConfig: Config) {
                 }
             } else if (state == Call.State.OutgoingInit) {
                 onOutgoingStarted()
+            } else if (state == Call.State.OutgoingRinging) {
+                if (core.callsNb == 1) {
+                    routeAudioToBluetoothIfAvailable(call)
+                }
             } else if (state == Call.State.Connected) {
                 if (isVibrating) {
                     Log.i("[Context] Stopping vibration")
@@ -166,6 +170,10 @@ class CoreContext(val context: Context, coreConfig: Config) {
                     isVibrating = false
                 }
 
+                if (call.dir == Call.Dir.Incoming && core.callsNb == 1) {
+                    routeAudioToBluetoothIfAvailable(call)
+                }
+
                 onCallStarted()
             } else if (state == Call.State.End || state == Call.State.Error || state == Call.State.Released) {
                 if (core.callsNb == 0) {
@@ -519,4 +527,16 @@ class CoreContext(val context: Context, coreConfig: Config) {
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_REORDER_TO_FRONT)
         context.startActivity(intent)
     }
+
+    private fun routeAudioToBluetoothIfAvailable(call: Call) {
+        for (audioDevice in core.audioDevices) {
+            if (audioDevice.type == AudioDevice.Type.Bluetooth &&
+                    audioDevice.hasCapability(AudioDevice.Capabilities.CapabilityPlay)) {
+                Log.i("[Context] Found bluetooth audio device [${audioDevice.deviceName}], routing audio to it")
+                call.outputAudioDevice = audioDevice
+                return
+            }
+        }
+        Log.w("[Context] Didn't find any bluetooth audio device, keeping default audio route")
+    }
 }