Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9b5f4fca authored by Alice Kuo's avatar Alice Kuo
Browse files

Use 1M PHY for the ACK packet from buds to phone direction. 

Re-land the setting with feature flag
It could be tested by the below command.
adb shell setprop persist.device_config.aconfig_flags.bluetooth.com.android.bluetooth.flags.asymmetric_phy_for_unidirectional_cis true

Bug: 310187752
Test: manual, create CIS and check the PHY that selected
Test: atest BluetoothInstrumentationTests
Change-Id: I077ce2500a0c97a64701a5acfbe53c9e08f75870
parent 4ca82e98

flags/leaudio.aconfig

+7 −0
Original line number Diff line number Diff line
@@ -48,3 +48,10 @@ flag { 
    description: "Support Dynamic Spatial Audio for LE Audio"

    bug: "309665975"

}



flag {

    name: "asymmetric_phy_for_unidirectional_cis"

    namespace: "bluetooth"

    description: "Apply asymetric PHY setting for unidirectional CIS"

    bug: "314176433"

}

system/bta/le_audio/state_machine.cc

+9 −0
Original line number Diff line number Diff line
@@ -1371,6 +1371,15 @@ class LeAudioGroupStateMachineImpl : public LeAudioGroupStateMachine { 
      return false;

    }



    // Use 1M Phy for the ACK packet from remote device to phone for better

    // sensitivity

    if (IS_FLAG_ENABLED(asymmetric_phy_for_unidirectional_cis) &&

        max_sdu_size_stom == 0 &&

        (phy_stom & bluetooth::hci::kIsoCigPhy1M) != 0) {

      LOG_INFO("Use asymmetric PHY for unidirectional CIS");

      phy_stom = bluetooth::hci::kIsoCigPhy1M;

    }



    uint8_t rtn_mtos = 0;

    uint8_t rtn_stom = 0;