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Commit b58cee4a authored by Limon Mia's avatar Limon Mia
Browse files

BTAudio HAL: Added feature flag for DSA Over LEA 

Test: atest VtsHalBluetoothAudioTargetTest
Bug: 270987427
Change-Id: Ifef0b97d20c7c12001b7d04cc7f8ce9da5fb1920
parent 83a9d7f7

bluetooth/audio/flags/Android.bp

0 → 100644
+12 −0
Original line number Diff line number Diff line 
aconfig_declarations {

    name: "btaudiohal_flags",

    package: "com.android.btaudio.hal.flags",

    srcs: ["btaudiohal.aconfig"],

}



cc_aconfig_library {

    name: "btaudiohal_flags_c_lib",

    aconfig_declarations: "btaudiohal_flags",

    vendor: true,

    host_supported: true,

}

bluetooth/audio/flags/btaudiohal.aconfig

0 → 100644
+8 −0
Original line number Diff line number Diff line 
package: "com.android.btaudio.hal.flags"



flag {

    name: "dsa_lea"

    namespace: "pixel_bluetooth"

    description: "Flag for DSA Over LEA"

    bug: "270987427"

}

bluetooth/audio/utils/Android.bp

+4 −0
Original line number Diff line number Diff line
@@ -63,6 +63,10 @@ cc_library_shared { 
        "libhidlbase",

        "libxml2",

        "libflatbuffers-cpp",

        "server_configurable_flags",

    ],

    static_libs: [

        "btaudiohal_flags_c_lib",

    ],

    generated_sources: ["le_audio_codec_capabilities"],

    generated_headers: [

bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp

+46 −21
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <android-base/logging.h>

#include <android-base/stringprintf.h>

#include <android/binder_manager.h>

#include <com_android_btaudio_hal_flags.h>

#include <hardware/audio.h>



#include "BluetoothAudioSession.h"
@@ -36,6 +37,14 @@ static constexpr int kFmqReceiveTimeoutMs = 
static constexpr int kWritePollMs = 1;  // polled non-blocking interval

static constexpr int kReadPollMs = 1;   // polled non-blocking interval



static std::string toString(const std::vector<LatencyMode>& latencies) {

  std::stringstream latencyModesStr;

  for (LatencyMode mode : latencies) {

    latencyModesStr << " " << toString(mode);

  }

  return latencyModesStr.str();

}



BluetoothAudioSession::BluetoothAudioSession(const SessionType& session_type)

    : session_type_(session_type), stack_iface_(nullptr), data_mq_(nullptr) {}
@@ -65,6 +74,7 @@ void BluetoothAudioSession::OnSessionStarted( 
    stack_iface_ = stack_iface;

    latency_modes_ = latency_modes;

    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)

              << " - All LatencyModes=" << toString(latency_modes)

              << ", AudioConfiguration=" << audio_config.toString();

    ReportSessionStatus();

  }
@@ -604,6 +614,7 @@ std::vector<LatencyMode> BluetoothAudioSession::GetSupportedLatencyModes() { 
    return std::vector<LatencyMode>();

  }



  if (com::android::btaudio::hal::flags::dsa_lea()) {

    std::vector<LatencyMode> supported_latency_modes;

    if (session_type_ ==

        SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
@@ -622,15 +633,29 @@ std::vector<LatencyMode> BluetoothAudioSession::GetSupportedLatencyModes() { 
        }

        if (mode == LatencyMode::DYNAMIC_SPATIAL_AUDIO_SOFTWARE ||

            mode == LatencyMode::DYNAMIC_SPATIAL_AUDIO_HARDWARE) {

        // DSA_SW and DSA_HW only supported for LE_HARDWARE_OFFLOAD_ENC sessions

          // DSA_SW and DSA_HW only supported for LE_HARDWARE_OFFLOAD_ENC

          // sessions

          continue;

        }

        supported_latency_modes.push_back(mode);

      }

    }

    LOG(DEBUG) << __func__ << " - Supported LatencyMode="

               << toString(supported_latency_modes);

    return supported_latency_modes;

  }



  if (low_latency_allowed_) return latency_modes_;

  std::vector<LatencyMode> modes;

  for (LatencyMode mode : latency_modes_) {

    if (mode == LatencyMode::LOW_LATENCY)

      // ignore those low latency mode if Bluetooth stack doesn't allow

      continue;

    modes.push_back(mode);

  }

  return modes;

}



void BluetoothAudioSession::SetLatencyMode(const LatencyMode& latency_mode) {

  std::lock_guard<std::recursive_mutex> guard(mutex_);

  if (!IsSessionReady()) {