commit 58a73fc8445db7fc587e4ef494e59bf5663f8b77
author Eric Laurent <elaurent@google.com> Wed Feb 21 18:46:13 2018 -0800
committer Jakub Pawlowski <jpawlowski@google.com> Sat Mar 10 00:44:56 2018 +0000
tree 953f7a1db4c4b6da60818709f0efea126902d3b1
parent 966c158717dea42a7aa4f69a002f30a73c8713cb

Add Bluetooth Hearing Aid routing and configuration

Bug: 69623109
Test: connect to Hearing Aid, make phone call, verify audio is heard
Change-Id: I92267fb48608fb721c5c4ef7ec9fceeafc8ea192

services/audiopolicy/enginedefault/src/Engine.cpp

diff --git a/services/audiopolicy/enginedefault/src/Engine.cpp b/services/audiopolicy/enginedefault/src/Engine.cpp
index 5ec0475..e08583c 100644
--- a/services/audiopolicy/enginedefault/src/Engine.cpp
+++ b/services/audiopolicy/enginedefault/src/Engine.cpp
@@ -306,8 +306,14 @@
             sp<AudioOutputDescriptor> primaryOutput = outputs.getPrimaryOutput();
             audio_devices_t availPrimaryInputDevices =
                  availableInputDevices.getDevicesFromHwModule(primaryOutput->getModuleHandle());
+
+            // TODO: getPrimaryOutput return only devices from first module in
+            // audio_policy_configuration.xml, hearing aid is not there, but it's
+            // a primary device
+            // FIXME: this is not the right way of solving this problem
             audio_devices_t availPrimaryOutputDevices =
-                    primaryOutput->supportedDevices() & availableOutputDevices.types();
+                (primaryOutput->supportedDevices() | AUDIO_DEVICE_OUT_HEARING_AID) &
+                availableOutputDevices.types();
 
             if (((availableInputDevices.types() &
                     AUDIO_DEVICE_IN_TELEPHONY_RX & ~AUDIO_DEVICE_BIT_IN) == 0) ||
@@ -332,6 +338,8 @@
             // FALL THROUGH
 
         default:    // FORCE_NONE
+            device = availableOutputDevicesType & AUDIO_DEVICE_OUT_HEARING_AID;
+            if (device) break;
             // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
             if (!isInCall() &&
                     (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
@@ -481,6 +489,9 @@
                     outputDeviceTypesToIgnore);
             break;
         }
+        if (device2 == AUDIO_DEVICE_NONE) {
+            device2 = availableOutputDevicesType & AUDIO_DEVICE_OUT_HEARING_AID;
+        }
         if ((device2 == AUDIO_DEVICE_NONE) &&
                 (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
                 (outputs.getA2dpOutput() != 0)) {