commit 0a7d0bdbdfbc566c0bb23b8e63200028153210f3
author Ajay Panicker <apanicke@google.com> Wed Sep 06 09:59:51 2017 -0700
committer android-build-team Robot <android-build-team-robot@google.com> Fri Sep 22 23:20:27 2017 +0000
tree 0ae12e9585d95efbbed28a55b7eaa5ae3ab10fa5
parent b6291d482af5a775f05f0996fbf04884fc9ac01f

Change our AVRCP capabilities if the remote device only supports 1.3

This prevents issues with devices that only support 1.3 but can not
handle forward compatability like some Alpine Carkits.

Bug: 37943083
Test: Connect to Alpine carkit that only supports 1.3 and see new features
      are used.

Change-Id: I6d041590dc51d7e8711b17fb1cb9c880b640052a
Merged-In: I6d041590dc51d7e8711b17fb1cb9c880b640052a
(cherry picked from commit f9f1c8b449efb9cb7894a64fe2977f875679ba52)
(cherry picked from commit ff2d86ed3af91099597d033a76a143437543d6fd)
(cherry picked from commit c8ab11a06a6d4c4a37184fe9be655e560d3a340d)

bta/av/bta_av_act.cc

diff --git a/bta/av/bta_av_act.cc b/bta/av/bta_av_act.cc
index 1e27c25..67a8299 100644
--- a/bta/av/bta_av_act.cc
+++ b/bta/av/bta_av_act.cc
@@ -1788,6 +1788,23 @@
       peer_features |=
           bta_av_check_peer_features(UUID_SERVCLASS_AV_REM_CTRL_TARGET);
     }
+
+    /* Change our features if the remote AVRCP version is 1.3 or less */
+    tSDP_DISC_REC* p_rec = nullptr;
+    p_rec = SDP_FindServiceInDb(p_cb->p_disc_db,
+                                UUID_SERVCLASS_AV_REMOTE_CONTROL, p_rec);
+    if (p_rec != NULL &&
+        SDP_FindAttributeInRec(p_rec, ATTR_ID_BT_PROFILE_DESC_LIST) != NULL) {
+      /* get profile version (if failure, version parameter is not updated) */
+      uint16_t peer_rc_version = 0xFFFF;  // Don't change the AVRCP version
+      SDP_FindProfileVersionInRec(p_rec, UUID_SERVCLASS_AV_REMOTE_CONTROL,
+                                  &peer_rc_version);
+      if (peer_rc_version <= AVRC_REV_1_3) {
+        APPL_TRACE_DEBUG("%s Using AVRCP 1.3 Capabilities with remote device",
+                         __func__);
+        p_bta_av_cfg = (tBTA_AV_CFG*)&bta_av_cfg_compatibility;
+      }
+    }
   }
 
   p_cb->disc = 0;