From bc9976e7497106c2b21321b8d4972faa98cf7bc0 Mon Sep 17 00:00:00 2001
From: Jack He <siyuanh@google.com>
Date: Fri, 5 Jan 2018 17:17:06 -0800
Subject: [PATCH] HFP: Add isInbandRingingEnabled() API (1/4)

* Use BluetoothHeadset.isInbandRingingEnabled() API to check whether
  in-band ringing is currently enabled in the system when deciding on
  audio routes for ringtone
* Add this as a hidden internal API for system components

Bug: 71646213
Test: make, toggle in-band ringing from Development Settings and observe
      whether Telecom service tries to open SCO when there is an
      incoming call

Change-Id: I1ef0dd2b54ace7649ddd1f043f0ef5847743a5c4
---
 .../android/bluetooth/BluetoothHeadset.java   | 30 +++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/core/java/android/bluetooth/BluetoothHeadset.java b/core/java/android/bluetooth/BluetoothHeadset.java
index 55a6b4c6b4d4e..c94540a48ec1b 100644
--- a/core/java/android/bluetooth/BluetoothHeadset.java
+++ b/core/java/android/bluetooth/BluetoothHeadset.java
@@ -1071,9 +1071,35 @@ public final class BluetoothHeadset implements BluetoothProfile {
     }
 
     /**
-     * check if in-band ringing is supported for this platform.
+     * Check if in-band ringing is currently enabled. In-band ringing could be disabled during an
+     * active connection.
      *
-     * @return true if in-band ringing is supported false if in-band ringing is not supported
+     * @return true if in-band ringing is enabled, false if in-band ringing is disabled
+     * @hide
+     */
+    @RequiresPermission(android.Manifest.permission.BLUETOOTH)
+    public boolean isInbandRingingEnabled() {
+        if (DBG) {
+            log("isInbandRingingEnabled()");
+        }
+        final IBluetoothHeadset service = mService;
+        if (service != null && isEnabled()) {
+            try {
+                return service.isInbandRingingEnabled();
+            } catch (RemoteException e) {
+                Log.e(TAG, Log.getStackTraceString(new Throwable()));
+            }
+        }
+        if (service == null) {
+            Log.w(TAG, "Proxy not attached to service");
+        }
+        return false;
+    }
+
+    /**
+     * Check if in-band ringing is supported for this platform.
+     *
+     * @return true if in-band ringing is supported, false if in-band ringing is not supported
      * @hide
      */
     public static boolean isInbandRingingSupported(Context context) {