commit 788d01b71eda6939d1b21bbd075128dfd3307a99
author Hall Liu <hallliu@google.com> Tue Jul 23 18:39:15 2019 -0700
committer Hall Liu <hallliu@google.com> Thu Aug 08 17:08:25 2019 -0700
tree 9f99f40e952229093d4d8636b678881e1db55cef
parent 403bf951fd80b3b927f9580e8f403d177b9ca559

Add carrier config for ignoring user RTT setting

Add a carrier config to ignore the user's RTT mode setting for purposes
of IMS registration and default outgoing/incoming call behavior.

Bug: 136035164
Test: manual
Change-Id: I481fb945fd76181a0c59cb433c2959b532127153

telephony/java/android/telephony/CarrierConfigManager.java

diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index cea4faf..18841d2 100755
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -1002,6 +1002,18 @@
             "call_forwarding_map_non_number_to_voicemail_bool";
 
     /**
+     * When {@code true}, the phone will always tell the IMS stack to keep RTT enabled and
+     * determine on a per-call basis (based on extras from the dialer app) whether a call should be
+     * an RTT call or not.
+     *
+     * When {@code false}, the old behavior is used, where the toggle in accessibility settings is
+     * used to set the IMS stack's RTT enabled state.
+     * @hide
+     */
+    public static final String KEY_IGNORE_RTT_MODE_SETTING_BOOL =
+            "ignore_rtt_mode_setting_bool";
+
+    /**
      * Determines whether conference calls are supported by a carrier.  When {@code true},
      * conference calling is supported, {@code false otherwise}.
      */
@@ -3194,6 +3206,7 @@
         sDefaults.putInt(KEY_IMS_DTMF_TONE_DELAY_INT, 0);
         sDefaults.putInt(KEY_CDMA_DTMF_TONE_DELAY_INT, 100);
         sDefaults.putBoolean(KEY_CALL_FORWARDING_MAP_NON_NUMBER_TO_VOICEMAIL_BOOL, false);
+        sDefaults.putBoolean(KEY_IGNORE_RTT_MODE_SETTING_BOOL, false);
         sDefaults.putInt(KEY_CDMA_3WAYCALL_FLASH_DELAY_INT , 0);
         sDefaults.putBoolean(KEY_SUPPORT_CONFERENCE_CALL_BOOL, true);
         sDefaults.putBoolean(KEY_SUPPORT_IMS_CONFERENCE_CALL_BOOL, true);