diff --git a/audio/aidl/default/Android.bp b/audio/aidl/default/Android.bp
index 4e583a4..b6cfc13 100644
--- a/audio/aidl/default/Android.bp
+++ b/audio/aidl/default/Android.bp
@@ -82,6 +82,9 @@
         "alsa/ModuleAlsa.cpp",
         "alsa/StreamAlsa.cpp",
         "alsa/Utils.cpp",
+        "bluetooth/DevicePortProxy.cpp",
+        "bluetooth/ModuleBluetooth.cpp",
+        "bluetooth/StreamBluetooth.cpp",
         "r_submix/ModuleRemoteSubmix.cpp",
         "r_submix/RemoteSubmixUtils.cpp",
         "r_submix/SubmixRoute.cpp",
@@ -105,7 +108,9 @@
         "audio_policy_engine_configuration_aidl_default",
     ],
     shared_libs: [
+        "android.hardware.bluetooth.audio-V3-ndk",
         "libaudio_aidl_conversion_common_ndk",
+        "libbluetooth_audio_session_aidl",
         "libmedia_helper",
         "libstagefright_foundation",
     ],
@@ -136,7 +141,9 @@
         "libaudioserviceexampleimpl",
     ],
     shared_libs: [
+        "android.hardware.bluetooth.audio-V3-ndk",
         "libaudio_aidl_conversion_common_ndk",
+        "libbluetooth_audio_session_aidl",
         "libmedia_helper",
         "libstagefright_foundation",
     ],
diff --git a/audio/aidl/default/Bluetooth.cpp b/audio/aidl/default/Bluetooth.cpp
index c32b538..072b89f 100644
--- a/audio/aidl/default/Bluetooth.cpp
+++ b/audio/aidl/default/Bluetooth.cpp
@@ -82,19 +82,18 @@
 
 ndk::ScopedAStatus BluetoothA2dp::isEnabled(bool* _aidl_return) {
     *_aidl_return = mEnabled;
-    LOG(DEBUG) << __func__ << ": returning " << *_aidl_return;
     return ndk::ScopedAStatus::ok();
 }
 
 ndk::ScopedAStatus BluetoothA2dp::setEnabled(bool in_enabled) {
     mEnabled = in_enabled;
     LOG(DEBUG) << __func__ << ": " << mEnabled;
+    if (mHandler) return mHandler();
     return ndk::ScopedAStatus::ok();
 }
 
 ndk::ScopedAStatus BluetoothA2dp::supportsOffloadReconfiguration(bool* _aidl_return) {
-    *_aidl_return = true;
-    LOG(DEBUG) << __func__ << ": returning " << *_aidl_return;
+    *_aidl_return = false;
     return ndk::ScopedAStatus::ok();
 }
 
@@ -102,24 +101,22 @@
         const std::vector<::aidl::android::hardware::audio::core::VendorParameter>& in_parameters
                 __unused) {
     LOG(DEBUG) << __func__ << ": " << ::android::internal::ToString(in_parameters);
-    return ndk::ScopedAStatus::ok();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
 }
 
 ndk::ScopedAStatus BluetoothLe::isEnabled(bool* _aidl_return) {
     *_aidl_return = mEnabled;
-    LOG(DEBUG) << __func__ << ": returning " << *_aidl_return;
     return ndk::ScopedAStatus::ok();
 }
 
 ndk::ScopedAStatus BluetoothLe::setEnabled(bool in_enabled) {
     mEnabled = in_enabled;
-    LOG(DEBUG) << __func__ << ": " << mEnabled;
+    if (mHandler) return mHandler();
     return ndk::ScopedAStatus::ok();
 }
 
 ndk::ScopedAStatus BluetoothLe::supportsOffloadReconfiguration(bool* _aidl_return) {
-    *_aidl_return = true;
-    LOG(DEBUG) << __func__ << ": returning " << *_aidl_return;
+    *_aidl_return = false;
     return ndk::ScopedAStatus::ok();
 }
 
@@ -127,7 +124,7 @@
         const std::vector<::aidl::android::hardware::audio::core::VendorParameter>& in_parameters
                 __unused) {
     LOG(DEBUG) << __func__ << ": " << ::android::internal::ToString(in_parameters);
-    return ndk::ScopedAStatus::ok();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
 }
 
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/Configuration.cpp b/audio/aidl/default/Configuration.cpp
index a71c6ea..385ffbf 100644
--- a/audio/aidl/default/Configuration.cpp
+++ b/audio/aidl/default/Configuration.cpp
@@ -561,4 +561,86 @@
     return std::make_unique<Configuration>(configuration);
 }
 
+// Bluetooth configuration:
+//
+// Device ports:
+//  * "BT A2DP Out", OUT_DEVICE, CONNECTION_BT_A2DP
+//    - profile PCM 16-bit; STEREO; 44100, 48000, 88200, 96000
+//  * "BT A2DP Headphones", OUT_HEADSET, CONNECTION_BT_A2DP
+//    - profile PCM 16-bit; STEREO; 44100, 48000, 88200, 96000
+//  * "BT A2DP Speaker", OUT_SPEAKER, CONNECTION_BT_A2DP
+//    - profile PCM 16-bit; STEREO; 44100, 48000, 88200, 96000
+//  * "BT Hearing Aid Out", OUT_HEARING_AID, CONNECTION_WIRELESS
+//    - no profiles specified
+//
+// Mix ports:
+//  * "a2dp output", 1 max open, 1 max active stream
+//    - no profiles specified
+//  * "hearing aid output", 1 max open, 1 max active stream
+//    - profile PCM 16-bit; STEREO; 16000, 24000
+//
+// Routes:
+//  "a2dp output" -> "BT A2DP Out"
+//  "a2dp output" -> "BT A2DP Headphones"
+//  "a2dp output" -> "BT A2DP Speaker"
+//  "hearing aid output" -> "BT Hearing Aid Out"
+//
+std::unique_ptr<Configuration> getBluetoothConfiguration() {
+    static const Configuration configuration = []() {
+        const std::vector<AudioProfile> standardPcmAudioProfiles = {
+                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO},
+                              {44100, 48000, 88200, 96000})};
+        Configuration c;
+
+        // Device ports
+        AudioPort btOutDevice =
+                createPort(c.nextPortId++, "BT A2DP Out", 0, false,
+                           createDeviceExt(AudioDeviceType::OUT_DEVICE, 0,
+                                           AudioDeviceDescription::CONNECTION_BT_A2DP));
+        c.ports.push_back(btOutDevice);
+        c.connectedProfiles[btOutDevice.id] = standardPcmAudioProfiles;
+
+        AudioPort btOutHeadphone =
+                createPort(c.nextPortId++, "BT A2DP Headphones", 0, false,
+                           createDeviceExt(AudioDeviceType::OUT_HEADSET, 0,
+                                           AudioDeviceDescription::CONNECTION_BT_A2DP));
+        c.ports.push_back(btOutHeadphone);
+        c.connectedProfiles[btOutHeadphone.id] = standardPcmAudioProfiles;
+
+        AudioPort btOutSpeaker =
+                createPort(c.nextPortId++, "BT A2DP Speaker", 0, false,
+                           createDeviceExt(AudioDeviceType::OUT_SPEAKER, 0,
+                                           AudioDeviceDescription::CONNECTION_BT_A2DP));
+        c.ports.push_back(btOutSpeaker);
+        c.connectedProfiles[btOutSpeaker.id] = standardPcmAudioProfiles;
+
+        AudioPort btOutHearingAid =
+                createPort(c.nextPortId++, "BT Hearing Aid Out", 0, false,
+                           createDeviceExt(AudioDeviceType::OUT_HEARING_AID, 0,
+                                           AudioDeviceDescription::CONNECTION_WIRELESS));
+        c.ports.push_back(btOutHearingAid);
+        c.connectedProfiles[btOutHearingAid.id] = std::vector<AudioProfile>(
+                {createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {16000})});
+
+        // Mix ports
+        AudioPort btInMix =
+                createPort(c.nextPortId++, "a2dp output", 0, true, createPortMixExt(1, 1));
+        c.ports.push_back(btInMix);
+
+        AudioPort btHeadsetInMix =
+                createPort(c.nextPortId++, "hearing aid output", 0, true, createPortMixExt(1, 1));
+        btHeadsetInMix.profiles.push_back(createProfile(
+                PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {16000, 24000}));
+        c.ports.push_back(btHeadsetInMix);
+
+        c.routes.push_back(createRoute({btInMix}, btOutDevice));
+        c.routes.push_back(createRoute({btInMix}, btOutHeadphone));
+        c.routes.push_back(createRoute({btInMix}, btOutSpeaker));
+        c.routes.push_back(createRoute({btHeadsetInMix}, btOutHearingAid));
+
+        return c;
+    }();
+    return std::make_unique<Configuration>(configuration);
+}
+
 }  // namespace aidl::android::hardware::audio::core::internal
diff --git a/audio/aidl/default/Module.cpp b/audio/aidl/default/Module.cpp
index b59bd7c..f81095e 100644
--- a/audio/aidl/default/Module.cpp
+++ b/audio/aidl/default/Module.cpp
@@ -26,6 +26,7 @@
 #include <error/expected_utils.h>
 
 #include "core-impl/Module.h"
+#include "core-impl/ModuleBluetooth.h"
 #include "core-impl/ModulePrimary.h"
 #include "core-impl/ModuleRemoteSubmix.h"
 #include "core-impl/ModuleStub.h"
@@ -117,6 +118,8 @@
             return ndk::SharedRefBase::make<ModuleStub>();
         case Type::USB:
             return ndk::SharedRefBase::make<ModuleUsb>();
+        case Type::BLUETOOTH:
+            return ndk::SharedRefBase::make<ModuleBluetooth>();
     }
 }
 
@@ -134,6 +137,9 @@
         case Module::Type::USB:
             os << "usb";
             break;
+        case Module::Type::BLUETOOTH:
+            os << "bluetooth";
+            break;
     }
     return os;
 }
@@ -301,6 +307,9 @@
         case Type::USB:
             config = std::move(internal::getUsbConfiguration());
             break;
+        case Type::BLUETOOTH:
+            config = std::move(internal::getBluetoothConfiguration());
+            break;
     }
     return config;
 }
@@ -1362,4 +1371,13 @@
     return ndk::ScopedAStatus::ok();
 }
 
+Module::BtProfileHandles Module::getBtProfileManagerHandles() {
+    return std::make_tuple(std::weak_ptr<IBluetooth>(), std::weak_ptr<IBluetoothA2dp>(),
+                           std::weak_ptr<IBluetoothLe>());
+}
+
+ndk::ScopedAStatus Module::bluetoothParametersUpdated() {
+    return mStreams.bluetoothParametersUpdated();
+}
+
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/Stream.cpp b/audio/aidl/default/Stream.cpp
index d2be48c..7a617c9 100644
--- a/audio/aidl/default/Stream.cpp
+++ b/audio/aidl/default/Stream.cpp
@@ -117,7 +117,7 @@
     if (isConnected) {
         reply->observable.frames = mContext->getFrameCount();
         reply->observable.timeNs = ::android::elapsedRealtimeNano();
-        if (auto status = mDriver->getPosition(&reply->observable); status == ::android::OK) {
+        if (auto status = mDriver->refinePosition(&reply->observable); status == ::android::OK) {
             return;
         }
     }
@@ -723,6 +723,11 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus StreamCommonImpl::bluetoothParametersUpdated() {
+    LOG(DEBUG) << __func__;
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
 namespace {
 static std::map<AudioDevice, std::string> transformMicrophones(
         const std::vector<MicrophoneInfo>& microphones) {
@@ -734,12 +739,12 @@
 }  // namespace
 
 StreamIn::StreamIn(StreamContext&& context, const std::vector<MicrophoneInfo>& microphones)
-    : mContext(std::move(context)), mMicrophones(transformMicrophones(microphones)) {
+    : mContextInstance(std::move(context)), mMicrophones(transformMicrophones(microphones)) {
     LOG(DEBUG) << __func__;
 }
 
 void StreamIn::defaultOnClose() {
-    mContext.reset();
+    mContextInstance.reset();
 }
 
 ndk::ScopedAStatus StreamIn::getActiveMicrophones(
@@ -795,12 +800,12 @@
 }
 
 StreamOut::StreamOut(StreamContext&& context, const std::optional<AudioOffloadInfo>& offloadInfo)
-    : mContext(std::move(context)), mOffloadInfo(offloadInfo) {
+    : mContextInstance(std::move(context)), mOffloadInfo(offloadInfo) {
     LOG(DEBUG) << __func__;
 }
 
 void StreamOut::defaultOnClose() {
-    mContext.reset();
+    mContextInstance.reset();
 }
 
 ndk::ScopedAStatus StreamOut::updateOffloadMetadata(
diff --git a/audio/aidl/default/StreamSwitcher.cpp b/audio/aidl/default/StreamSwitcher.cpp
index e00c34b..8ba15a8 100644
--- a/audio/aidl/default/StreamSwitcher.cpp
+++ b/audio/aidl/default/StreamSwitcher.cpp
@@ -126,11 +126,10 @@
         LOG(ERROR) << __func__ << ": stream was closed";
         return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
     }
-    for (auto it = mEffects.begin(); it != mEffects.end();) {
+    for (auto it = mEffects.begin(); it != mEffects.end(); ++it) {
         if ((*it)->asBinder() == in_effect->asBinder()) {
-            it = mEffects.erase(it);
-        } else {
-            ++it;
+            mEffects.erase(it);
+            break;
         }
     }
     return !mIsStubStream ? mStream->removeEffect(in_effect) : ndk::ScopedAStatus::ok();
@@ -201,6 +200,10 @@
         }
         // The delegate is null because StreamSwitcher handles IStreamCommon methods by itself.
         if (ndk::ScopedAStatus status = mStream->initInstance(nullptr); !status.isOk()) {
+            if (mIsStubStream) {
+                LOG(FATAL) << __func__
+                           << ": failed to initialize stub stream: " << status.getDescription();
+            }
             // Need to close the current failed stream, and report an error.
             // Since we can't operate without a stream implementation, put a stub in.
             RETURN_STATUS_IF_ERROR(closeCurrentStream(false /*validateStreamState*/));
@@ -233,8 +236,28 @@
                              << status.getDescription();
             }
         }
+        if (mBluetoothParametersUpdated) {
+            if (auto status = mStream->bluetoothParametersUpdated(); !status.isOk()) {
+                LOG(WARNING) << __func__
+                             << ": error while updating BT parameters for a new stream: "
+                             << status.getDescription();
+            }
+        }
+        mBluetoothParametersUpdated = false;
     }
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus StreamSwitcher::bluetoothParametersUpdated() {
+    if (mStream == nullptr) {
+        LOG(ERROR) << __func__ << ": stream was closed";
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
+    }
+    if (mIsStubStream) {
+        mBluetoothParametersUpdated = true;
+        return ndk::ScopedAStatus::ok();
+    }
+    return mStream->bluetoothParametersUpdated();
+}
+
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/alsa/Mixer.h b/audio/aidl/default/alsa/Mixer.h
index 78728c2..8fba1e0 100644
--- a/audio/aidl/default/alsa/Mixer.h
+++ b/audio/aidl/default/alsa/Mixer.h
@@ -72,7 +72,7 @@
     std::mutex mMixerAccess;
     // The mixer object is owned by ALSA and will be released when the mixer is closed.
     struct mixer* const mMixer;
-    // `mMixerControls` will only be initialized in constructor. After that, it wil only be
+    // `mMixerControls` will only be initialized in constructor. After that, it will only be
     // read but not be modified. Each mixer_ctl object is owned by ALSA, it's life span is
     // the same as of the mixer itself.
     const Controls mMixerControls;
diff --git a/audio/aidl/default/alsa/StreamAlsa.cpp b/audio/aidl/default/alsa/StreamAlsa.cpp
index 00a7a84..1d22a60 100644
--- a/audio/aidl/default/alsa/StreamAlsa.cpp
+++ b/audio/aidl/default/alsa/StreamAlsa.cpp
@@ -108,7 +108,7 @@
     return ::android::OK;
 }
 
-::android::status_t StreamAlsa::getPosition(StreamDescriptor::Position* position) {
+::android::status_t StreamAlsa::refinePosition(StreamDescriptor::Position* position) {
     if (mAlsaDeviceProxies.empty()) {
         LOG(FATAL) << __func__ << ": no input devices";
         return ::android::NO_INIT;
diff --git a/audio/aidl/default/android.hardware.audio.service-aidl.xml b/audio/aidl/default/android.hardware.audio.service-aidl.xml
index c9d6314..9db6061 100644
--- a/audio/aidl/default/android.hardware.audio.service-aidl.xml
+++ b/audio/aidl/default/android.hardware.audio.service-aidl.xml
@@ -22,6 +22,11 @@
   <hal format="aidl">
     <name>android.hardware.audio.core</name>
     <version>1</version>
+    <fqname>IModule/bluetooth</fqname>
+  </hal>
+  <hal format="aidl">
+    <name>android.hardware.audio.core</name>
+    <version>1</version>
     <fqname>IConfig/default</fqname>
   </hal>
 </manifest>
diff --git a/audio/aidl/default/bluetooth/DevicePortProxy.cpp b/audio/aidl/default/bluetooth/DevicePortProxy.cpp
new file mode 100644
index 0000000..12e204a
--- /dev/null
+++ b/audio/aidl/default/bluetooth/DevicePortProxy.cpp
@@ -0,0 +1,577 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AHAL_BluetoothPortProxy"
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <audio_utils/primitives.h>
+#include <inttypes.h>
+#include <log/log.h>
+
+#include "core-impl/DevicePortProxy.h"
+
+namespace android::bluetooth::audio::aidl {
+
+namespace {
+
+// The maximum time to wait in std::condition_variable::wait_for()
+constexpr unsigned int kMaxWaitingTimeMs = 4500;
+
+}  // namespace
+
+using ::aidl::android::hardware::audio::common::SinkMetadata;
+using ::aidl::android::hardware::audio::common::SourceMetadata;
+using ::aidl::android::hardware::bluetooth::audio::AudioConfiguration;
+using ::aidl::android::hardware::bluetooth::audio::BluetoothAudioSessionControl;
+using ::aidl::android::hardware::bluetooth::audio::BluetoothAudioStatus;
+using ::aidl::android::hardware::bluetooth::audio::ChannelMode;
+using ::aidl::android::hardware::bluetooth::audio::PcmConfiguration;
+using ::aidl::android::hardware::bluetooth::audio::PortStatusCallbacks;
+using ::aidl::android::hardware::bluetooth::audio::PresentationPosition;
+using ::aidl::android::hardware::bluetooth::audio::SessionType;
+using ::aidl::android::media::audio::common::AudioDeviceDescription;
+using ::aidl::android::media::audio::common::AudioDeviceType;
+using ::android::base::StringPrintf;
+
+std::ostream& operator<<(std::ostream& os, const BluetoothStreamState& state) {
+    switch (state) {
+        case BluetoothStreamState::DISABLED:
+            return os << "DISABLED";
+        case BluetoothStreamState::STANDBY:
+            return os << "STANDBY";
+        case BluetoothStreamState::STARTING:
+            return os << "STARTING";
+        case BluetoothStreamState::STARTED:
+            return os << "STARTED";
+        case BluetoothStreamState::SUSPENDING:
+            return os << "SUSPENDING";
+        case BluetoothStreamState::UNKNOWN:
+            return os << "UNKNOWN";
+        default:
+            return os << android::base::StringPrintf("%#hhx", state);
+    }
+}
+
+BluetoothAudioPortAidl::BluetoothAudioPortAidl()
+    : mCookie(::aidl::android::hardware::bluetooth::audio::kObserversCookieUndefined),
+      mState(BluetoothStreamState::DISABLED),
+      mSessionType(SessionType::UNKNOWN) {}
+
+BluetoothAudioPortAidl::~BluetoothAudioPortAidl() {
+    unregisterPort();
+}
+
+bool BluetoothAudioPortAidl::registerPort(const AudioDeviceDescription& description) {
+    if (inUse()) {
+        LOG(ERROR) << __func__ << debugMessage() << " already in use";
+        return false;
+    }
+
+    if (!initSessionType(description)) return false;
+
+    auto control_result_cb = [port = this](uint16_t cookie, bool start_resp,
+                                           const BluetoothAudioStatus& status) {
+        (void)start_resp;
+        port->controlResultHandler(cookie, status);
+    };
+    auto session_changed_cb = [port = this](uint16_t cookie) {
+        port->sessionChangedHandler(cookie);
+    };
+    // TODO: Add audio_config_changed_cb
+    PortStatusCallbacks cbacks = {
+            .control_result_cb_ = control_result_cb,
+            .session_changed_cb_ = session_changed_cb,
+    };
+    mCookie = BluetoothAudioSessionControl::RegisterControlResultCback(mSessionType, cbacks);
+    auto isOk = (mCookie != ::aidl::android::hardware::bluetooth::audio::kObserversCookieUndefined);
+    if (isOk) {
+        std::lock_guard guard(mCvMutex);
+        mState = BluetoothStreamState::STANDBY;
+    }
+    LOG(DEBUG) << __func__ << debugMessage();
+    return isOk;
+}
+
+bool BluetoothAudioPortAidl::initSessionType(const AudioDeviceDescription& description) {
+    if (description.connection == AudioDeviceDescription::CONNECTION_BT_A2DP &&
+        (description.type == AudioDeviceType::OUT_DEVICE ||
+         description.type == AudioDeviceType::OUT_HEADPHONE ||
+         description.type == AudioDeviceType::OUT_SPEAKER)) {
+        LOG(VERBOSE) << __func__
+                     << ": device=AUDIO_DEVICE_OUT_BLUETOOTH_A2DP (HEADPHONES/SPEAKER) ("
+                     << description.toString() << ")";
+        mSessionType = SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH;
+    } else if (description.connection == AudioDeviceDescription::CONNECTION_WIRELESS &&
+               description.type == AudioDeviceType::OUT_HEARING_AID) {
+        LOG(VERBOSE) << __func__ << ": device=AUDIO_DEVICE_OUT_HEARING_AID (MEDIA/VOICE) ("
+                     << description.toString() << ")";
+        mSessionType = SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH;
+    } else if (description.connection == AudioDeviceDescription::CONNECTION_BT_LE &&
+               description.type == AudioDeviceType::OUT_HEADSET) {
+        LOG(VERBOSE) << __func__ << ": device=AUDIO_DEVICE_OUT_BLE_HEADSET (MEDIA/VOICE) ("
+                     << description.toString() << ")";
+        mSessionType = SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH;
+    } else if (description.connection == AudioDeviceDescription::CONNECTION_BT_LE &&
+               description.type == AudioDeviceType::OUT_SPEAKER) {
+        LOG(VERBOSE) << __func__ << ": device=AUDIO_DEVICE_OUT_BLE_SPEAKER (MEDIA) ("
+                     << description.toString() << ")";
+        mSessionType = SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH;
+    } else if (description.connection == AudioDeviceDescription::CONNECTION_BT_LE &&
+               description.type == AudioDeviceType::IN_HEADSET) {
+        LOG(VERBOSE) << __func__ << ": device=AUDIO_DEVICE_IN_BLE_HEADSET (VOICE) ("
+                     << description.toString() << ")";
+        mSessionType = SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH;
+    } else if (description.connection == AudioDeviceDescription::CONNECTION_BT_LE &&
+               description.type == AudioDeviceType::OUT_BROADCAST) {
+        LOG(VERBOSE) << __func__ << ": device=AUDIO_DEVICE_OUT_BLE_BROADCAST (MEDIA) ("
+                     << description.toString() << ")";
+        mSessionType = SessionType::LE_AUDIO_BROADCAST_SOFTWARE_ENCODING_DATAPATH;
+    } else {
+        LOG(ERROR) << __func__ << ": unknown device=" << description.toString();
+        return false;
+    }
+
+    if (!BluetoothAudioSessionControl::IsSessionReady(mSessionType)) {
+        LOG(ERROR) << __func__ << ": device=" << description.toString()
+                   << ", session_type=" << toString(mSessionType) << " is not ready";
+        return false;
+    }
+    return true;
+}
+
+void BluetoothAudioPortAidl::unregisterPort() {
+    if (!inUse()) {
+        LOG(WARNING) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return;
+    }
+    BluetoothAudioSessionControl::UnregisterControlResultCback(mSessionType, mCookie);
+    mCookie = ::aidl::android::hardware::bluetooth::audio::kObserversCookieUndefined;
+    LOG(VERBOSE) << __func__ << debugMessage() << " port unregistered";
+}
+
+void BluetoothAudioPortAidl::controlResultHandler(uint16_t cookie,
+                                                  const BluetoothAudioStatus& status) {
+    std::lock_guard guard(mCvMutex);
+    if (!inUse()) {
+        LOG(ERROR) << "control_result_cb: BluetoothAudioPortAidl is not in use";
+        return;
+    }
+    if (mCookie != cookie) {
+        LOG(ERROR) << "control_result_cb: proxy of device port (cookie="
+                   << StringPrintf("%#hx", cookie) << ") is corrupted";
+        return;
+    }
+    BluetoothStreamState previous_state = mState;
+    LOG(INFO) << "control_result_cb:" << debugMessage() << ", previous_state=" << previous_state
+              << ", status=" << toString(status);
+
+    switch (previous_state) {
+        case BluetoothStreamState::STARTED:
+            /* Only Suspend signal can be send in STARTED state*/
+            if (status == BluetoothAudioStatus::RECONFIGURATION ||
+                status == BluetoothAudioStatus::SUCCESS) {
+                mState = BluetoothStreamState::STANDBY;
+            } else {
+                LOG(WARNING) << StringPrintf(
+                        "control_result_cb: status=%s failure for session_type= %s, cookie=%#hx, "
+                        "previous_state=%#hhx",
+                        toString(status).c_str(), toString(mSessionType).c_str(), mCookie,
+                        previous_state);
+            }
+            break;
+        case BluetoothStreamState::STARTING:
+            if (status == BluetoothAudioStatus::SUCCESS) {
+                mState = BluetoothStreamState::STARTED;
+            } else {
+                // Set to standby since the stack may be busy switching between outputs
+                LOG(WARNING) << StringPrintf(
+                        "control_result_cb: status=%s failure for session_type= %s, cookie=%#hx, "
+                        "previous_state=%#hhx",
+                        toString(status).c_str(), toString(mSessionType).c_str(), mCookie,
+                        previous_state);
+                mState = BluetoothStreamState::STANDBY;
+            }
+            break;
+        case BluetoothStreamState::SUSPENDING:
+            if (status == BluetoothAudioStatus::SUCCESS) {
+                mState = BluetoothStreamState::STANDBY;
+            } else {
+                // It will be failed if the headset is disconnecting, and set to disable
+                // to wait for re-init again
+                LOG(WARNING) << StringPrintf(
+                        "control_result_cb: status=%s failure for session_type= %s, cookie=%#hx, "
+                        "previous_state=%#hhx",
+                        toString(status).c_str(), toString(mSessionType).c_str(), mCookie,
+                        previous_state);
+                mState = BluetoothStreamState::DISABLED;
+            }
+            break;
+        default:
+            LOG(ERROR) << "control_result_cb: unexpected previous_state="
+                       << StringPrintf(
+                                  "control_result_cb: status=%s failure for session_type= %s, "
+                                  "cookie=%#hx, previous_state=%#hhx",
+                                  toString(status).c_str(), toString(mSessionType).c_str(), mCookie,
+                                  previous_state);
+            return;
+    }
+    mInternalCv.notify_all();
+}
+
+void BluetoothAudioPortAidl::sessionChangedHandler(uint16_t cookie) {
+    std::lock_guard guard(mCvMutex);
+    if (!inUse()) {
+        LOG(ERROR) << "session_changed_cb: BluetoothAudioPortAidl is not in use";
+        return;
+    }
+    if (mCookie != cookie) {
+        LOG(ERROR) << "session_changed_cb: proxy of device port (cookie="
+                   << StringPrintf("%#hx", cookie) << ") is corrupted";
+        return;
+    }
+    BluetoothStreamState previous_state = mState;
+    LOG(VERBOSE) << "session_changed_cb:" << debugMessage()
+                 << ", previous_state=" << previous_state;
+    mState = BluetoothStreamState::DISABLED;
+    mInternalCv.notify_all();
+}
+
+bool BluetoothAudioPortAidl::inUse() const {
+    return (mCookie != ::aidl::android::hardware::bluetooth::audio::kObserversCookieUndefined);
+}
+
+bool BluetoothAudioPortAidl::getPreferredDataIntervalUs(size_t* interval_us) const {
+    if (!interval_us) {
+        LOG(ERROR) << __func__ << ": bad input arg";
+        return false;
+    }
+
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+
+    const AudioConfiguration& hal_audio_cfg =
+            BluetoothAudioSessionControl::GetAudioConfig(mSessionType);
+    if (hal_audio_cfg.getTag() != AudioConfiguration::pcmConfig) {
+        LOG(ERROR) << __func__ << ": unsupported audio cfg tag";
+        return false;
+    }
+
+    *interval_us = hal_audio_cfg.get<AudioConfiguration::pcmConfig>().dataIntervalUs;
+    return true;
+}
+
+bool BluetoothAudioPortAidl::loadAudioConfig(PcmConfiguration* audio_cfg) const {
+    if (!audio_cfg) {
+        LOG(ERROR) << __func__ << ": bad input arg";
+        return false;
+    }
+
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+
+    const AudioConfiguration& hal_audio_cfg =
+            BluetoothAudioSessionControl::GetAudioConfig(mSessionType);
+    if (hal_audio_cfg.getTag() != AudioConfiguration::pcmConfig) {
+        LOG(ERROR) << __func__ << ": unsupported audio cfg tag";
+        return false;
+    }
+    *audio_cfg = hal_audio_cfg.get<AudioConfiguration::pcmConfig>();
+    LOG(VERBOSE) << __func__ << debugMessage() << ", state*=" << getState() << ", PcmConfig=["
+                 << audio_cfg->toString() << "]";
+    if (audio_cfg->channelMode == ChannelMode::UNKNOWN) {
+        return false;
+    }
+    return true;
+}
+
+bool BluetoothAudioPortAidl::standby() {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+    std::lock_guard guard(mCvMutex);
+    LOG(VERBOSE) << __func__ << debugMessage() << ", state=" << getState() << " request";
+    if (mState == BluetoothStreamState::DISABLED) {
+        mState = BluetoothStreamState::STANDBY;
+        LOG(VERBOSE) << __func__ << debugMessage() << ", state=" << getState() << " done";
+        return true;
+    }
+    return false;
+}
+
+bool BluetoothAudioPortAidl::condWaitState(BluetoothStreamState state) {
+    const auto waitTime = std::chrono::milliseconds(kMaxWaitingTimeMs);
+    std::unique_lock lock(mCvMutex);
+    base::ScopedLockAssertion lock_assertion(mCvMutex);
+    switch (state) {
+        case BluetoothStreamState::STARTING: {
+            LOG(VERBOSE) << __func__ << debugMessage() << " waiting for STARTED";
+            mInternalCv.wait_for(lock, waitTime, [this] {
+                base::ScopedLockAssertion lock_assertion(mCvMutex);
+                return mState != BluetoothStreamState::STARTING;
+            });
+            return mState == BluetoothStreamState::STARTED;
+        }
+        case BluetoothStreamState::SUSPENDING: {
+            LOG(VERBOSE) << __func__ << debugMessage() << " waiting for SUSPENDED";
+            mInternalCv.wait_for(lock, waitTime, [this] {
+                base::ScopedLockAssertion lock_assertion(mCvMutex);
+                return mState != BluetoothStreamState::SUSPENDING;
+            });
+            return mState == BluetoothStreamState::STANDBY;
+        }
+        default:
+            LOG(WARNING) << __func__ << debugMessage() << " waiting for KNOWN";
+            return false;
+    }
+    return false;
+}
+
+bool BluetoothAudioPortAidl::start() {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+    LOG(VERBOSE) << __func__ << debugMessage() << ", state=" << getState()
+                 << ", mono=" << (mIsStereoToMono ? "true" : "false") << " request";
+
+    {
+        std::unique_lock lock(mCvMutex);
+        base::ScopedLockAssertion lock_assertion(mCvMutex);
+        if (mState == BluetoothStreamState::STARTED) {
+            return true;  // nop, return
+        } else if (mState == BluetoothStreamState::SUSPENDING ||
+                   mState == BluetoothStreamState::STARTING) {
+            /* If port is in transient state, give some time to respond */
+            auto state_ = mState;
+            lock.unlock();
+            if (!condWaitState(state_)) {
+                LOG(ERROR) << __func__ << debugMessage() << ", state=" << getState() << " failure";
+                return false;
+            }
+        }
+    }
+
+    bool retval = false;
+    {
+        std::unique_lock lock(mCvMutex);
+        base::ScopedLockAssertion lock_assertion(mCvMutex);
+        if (mState == BluetoothStreamState::STARTED) {
+            retval = true;
+        } else if (mState == BluetoothStreamState::STANDBY) {
+            mState = BluetoothStreamState::STARTING;
+            lock.unlock();
+            if (BluetoothAudioSessionControl::StartStream(mSessionType)) {
+                retval = condWaitState(BluetoothStreamState::STARTING);
+            } else {
+                LOG(ERROR) << __func__ << debugMessage() << ", state=" << getState()
+                           << " Hal fails";
+            }
+        }
+    }
+
+    if (retval) {
+        LOG(INFO) << __func__ << debugMessage() << ", state=" << getState()
+                  << ", mono=" << (mIsStereoToMono ? "true" : "false") << " done";
+    } else {
+        LOG(ERROR) << __func__ << debugMessage() << ", state=" << getState() << " failure";
+    }
+
+    return retval;  // false if any failure like timeout
+}
+
+bool BluetoothAudioPortAidl::suspend() {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+    LOG(VERBOSE) << __func__ << debugMessage() << ", state=" << getState() << " request";
+
+    {
+        std::unique_lock lock(mCvMutex);
+        base::ScopedLockAssertion lock_assertion(mCvMutex);
+        if (mState == BluetoothStreamState::STANDBY) {
+            return true;  // nop, return
+        } else if (mState == BluetoothStreamState::SUSPENDING ||
+                   mState == BluetoothStreamState::STARTING) {
+            /* If port is in transient state, give some time to respond */
+            auto state_ = mState;
+            lock.unlock();
+            if (!condWaitState(state_)) {
+                LOG(ERROR) << __func__ << debugMessage() << ", state=" << getState() << " failure";
+                return false;
+            }
+        }
+    }
+
+    bool retval = false;
+    {
+        std::unique_lock lock(mCvMutex);
+        base::ScopedLockAssertion lock_assertion(mCvMutex);
+        if (mState == BluetoothStreamState::STANDBY) {
+            retval = true;
+        } else if (mState == BluetoothStreamState::STARTED) {
+            mState = BluetoothStreamState::SUSPENDING;
+            lock.unlock();
+            if (BluetoothAudioSessionControl::SuspendStream(mSessionType)) {
+                retval = condWaitState(BluetoothStreamState::SUSPENDING);
+            } else {
+                LOG(ERROR) << __func__ << debugMessage() << ", state=" << getState()
+                           << " Hal fails";
+            }
+        }
+    }
+
+    if (retval) {
+        LOG(INFO) << __func__ << debugMessage() << ", state=" << getState() << " done";
+    } else {
+        LOG(ERROR) << __func__ << debugMessage() << ", state=" << getState() << " failure";
+    }
+
+    return retval;  // false if any failure like timeout
+}
+
+void BluetoothAudioPortAidl::stop() {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return;
+    }
+    std::lock_guard guard(mCvMutex);
+    LOG(VERBOSE) << __func__ << debugMessage() << ", state=" << getState() << " request";
+    if (mState != BluetoothStreamState::DISABLED) {
+        BluetoothAudioSessionControl::StopStream(mSessionType);
+        mState = BluetoothStreamState::DISABLED;
+    }
+    LOG(VERBOSE) << __func__ << debugMessage() << ", state=" << getState() << " done";
+}
+
+size_t BluetoothAudioPortAidlOut::writeData(const void* buffer, size_t bytes) const {
+    if (!buffer) {
+        LOG(ERROR) << __func__ << ": bad input arg";
+        return 0;
+    }
+
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return 0;
+    }
+
+    if (!mIsStereoToMono) {
+        return BluetoothAudioSessionControl::OutWritePcmData(mSessionType, buffer, bytes);
+    }
+
+    // WAR to mix the stereo into Mono (16 bits per sample)
+    const size_t write_frames = bytes >> 2;
+    if (write_frames == 0) return 0;
+    auto src = static_cast<const int16_t*>(buffer);
+    std::unique_ptr<int16_t[]> dst{new int16_t[write_frames]};
+    downmix_to_mono_i16_from_stereo_i16(dst.get(), src, write_frames);
+    // a frame is 16 bits, and the size of a mono frame is equal to half a stereo.
+    auto totalWrite = BluetoothAudioSessionControl::OutWritePcmData(mSessionType, dst.get(),
+                                                                    write_frames * 2);
+    return totalWrite * 2;
+}
+
+size_t BluetoothAudioPortAidlIn::readData(void* buffer, size_t bytes) const {
+    if (!buffer) {
+        LOG(ERROR) << __func__ << ": bad input arg";
+        return 0;
+    }
+
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return 0;
+    }
+
+    return BluetoothAudioSessionControl::InReadPcmData(mSessionType, buffer, bytes);
+}
+
+bool BluetoothAudioPortAidl::getPresentationPosition(
+        PresentationPosition& presentation_position) const {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+    bool retval = BluetoothAudioSessionControl::GetPresentationPosition(mSessionType,
+                                                                        presentation_position);
+    LOG(VERBOSE) << __func__ << debugMessage() << ", state=" << getState()
+                 << presentation_position.toString();
+
+    return retval;
+}
+
+bool BluetoothAudioPortAidl::updateSourceMetadata(const SourceMetadata& source_metadata) const {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+    LOG(DEBUG) << __func__ << debugMessage() << ", state=" << getState() << ", "
+               << source_metadata.tracks.size() << " track(s)";
+    if (source_metadata.tracks.size() == 0) return true;
+    return BluetoothAudioSessionControl::UpdateSourceMetadata(mSessionType, source_metadata);
+}
+
+bool BluetoothAudioPortAidl::updateSinkMetadata(const SinkMetadata& sink_metadata) const {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+    LOG(DEBUG) << __func__ << debugMessage() << ", state=" << getState() << ", "
+               << sink_metadata.tracks.size() << " track(s)";
+    if (sink_metadata.tracks.size() == 0) return true;
+    return BluetoothAudioSessionControl::UpdateSinkMetadata(mSessionType, sink_metadata);
+}
+
+BluetoothStreamState BluetoothAudioPortAidl::getState() const {
+    return mState;
+}
+
+bool BluetoothAudioPortAidl::setState(BluetoothStreamState state) {
+    if (!inUse()) {
+        LOG(ERROR) << __func__ << ": BluetoothAudioPortAidl is not in use";
+        return false;
+    }
+    std::lock_guard guard(mCvMutex);
+    LOG(DEBUG) << __func__ << ": BluetoothAudioPortAidl old state = " << mState
+               << " new state = " << state;
+    mState = state;
+    return true;
+}
+
+bool BluetoothAudioPortAidl::isA2dp() const {
+    return mSessionType == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+           mSessionType == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
+}
+
+bool BluetoothAudioPortAidl::isLeAudio() const {
+    return mSessionType == SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH ||
+           mSessionType == SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH ||
+           mSessionType == SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+           mSessionType == SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH ||
+           mSessionType == SessionType::LE_AUDIO_BROADCAST_SOFTWARE_ENCODING_DATAPATH ||
+           mSessionType == SessionType::LE_AUDIO_BROADCAST_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
+}
+
+std::string BluetoothAudioPortAidl::debugMessage() const {
+    return StringPrintf(": session_type=%s, cookie=%#hx", toString(mSessionType).c_str(), mCookie);
+}
+
+}  // namespace android::bluetooth::audio::aidl
diff --git a/audio/aidl/default/bluetooth/ModuleBluetooth.cpp b/audio/aidl/default/bluetooth/ModuleBluetooth.cpp
new file mode 100644
index 0000000..bfe7ca0
--- /dev/null
+++ b/audio/aidl/default/bluetooth/ModuleBluetooth.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AHAL_ModuleBluetooth"
+
+#include <android-base/logging.h>
+
+#include "core-impl/ModuleBluetooth.h"
+#include "core-impl/StreamBluetooth.h"
+
+namespace aidl::android::hardware::audio::core {
+
+using aidl::android::hardware::audio::common::SinkMetadata;
+using aidl::android::hardware::audio::common::SourceMetadata;
+using aidl::android::media::audio::common::AudioOffloadInfo;
+using aidl::android::media::audio::common::MicrophoneInfo;
+
+ndk::ScopedAStatus ModuleBluetooth::getBluetoothA2dp(
+        std::shared_ptr<IBluetoothA2dp>* _aidl_return) {
+    if (!mBluetoothA2dp) {
+        auto handle = ndk::SharedRefBase::make<BluetoothA2dp>();
+        handle->registerHandler(std::bind(&ModuleBluetooth::bluetoothParametersUpdated, this));
+        mBluetoothA2dp = handle;
+    }
+    *_aidl_return = mBluetoothA2dp.getInstance();
+    LOG(DEBUG) << __func__ << ": returning instance of IBluetoothA2dp: " << _aidl_return->get();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus ModuleBluetooth::getBluetoothLe(std::shared_ptr<IBluetoothLe>* _aidl_return) {
+    if (!mBluetoothLe) {
+        auto handle = ndk::SharedRefBase::make<BluetoothLe>();
+        handle->registerHandler(std::bind(&ModuleBluetooth::bluetoothParametersUpdated, this));
+        mBluetoothLe = handle;
+    }
+    *_aidl_return = mBluetoothLe.getInstance();
+    LOG(DEBUG) << __func__ << ": returning instance of IBluetoothLe: " << _aidl_return->get();
+    return ndk::ScopedAStatus::ok();
+}
+
+Module::BtProfileHandles ModuleBluetooth::getBtProfileManagerHandles() {
+    return std::make_tuple(std::weak_ptr<IBluetooth>(), mBluetoothA2dp.getInstance(),
+                           mBluetoothLe.getInstance());
+}
+
+ndk::ScopedAStatus ModuleBluetooth::getMicMute(bool* _aidl_return __unused) {
+    LOG(DEBUG) << __func__ << ": is not supported";
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus ModuleBluetooth::setMicMute(bool in_mute __unused) {
+    LOG(DEBUG) << __func__ << ": is not supported";
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus ModuleBluetooth::createInputStream(
+        StreamContext&& context, const SinkMetadata& sinkMetadata,
+        const std::vector<MicrophoneInfo>& microphones, std::shared_ptr<StreamIn>* result) {
+    return createStreamInstance<StreamInBluetooth>(result, std::move(context), sinkMetadata,
+                                                   microphones, getBtProfileManagerHandles());
+}
+
+ndk::ScopedAStatus ModuleBluetooth::createOutputStream(
+        StreamContext&& context, const SourceMetadata& sourceMetadata,
+        const std::optional<AudioOffloadInfo>& offloadInfo, std::shared_ptr<StreamOut>* result) {
+    return createStreamInstance<StreamOutBluetooth>(result, std::move(context), sourceMetadata,
+                                                    offloadInfo, getBtProfileManagerHandles());
+}
+
+ndk::ScopedAStatus ModuleBluetooth::onMasterMuteChanged(bool) {
+    LOG(DEBUG) << __func__ << ": is not supported";
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus ModuleBluetooth::onMasterVolumeChanged(float) {
+    LOG(DEBUG) << __func__ << ": is not supported";
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+}  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/bluetooth/StreamBluetooth.cpp b/audio/aidl/default/bluetooth/StreamBluetooth.cpp
new file mode 100644
index 0000000..91a33c2
--- /dev/null
+++ b/audio/aidl/default/bluetooth/StreamBluetooth.cpp
@@ -0,0 +1,338 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AHAL_StreamBluetooth"
+
+#include <Utils.h>
+#include <android-base/logging.h>
+#include <audio_utils/clock.h>
+
+#include "BluetoothAudioSessionControl.h"
+#include "core-impl/StreamBluetooth.h"
+
+namespace aidl::android::hardware::audio::core {
+
+using ::aidl::android::hardware::audio::common::SinkMetadata;
+using ::aidl::android::hardware::audio::common::SourceMetadata;
+using ::aidl::android::hardware::audio::core::VendorParameter;
+using ::aidl::android::hardware::bluetooth::audio::ChannelMode;
+using ::aidl::android::hardware::bluetooth::audio::PcmConfiguration;
+using ::aidl::android::hardware::bluetooth::audio::PresentationPosition;
+using ::aidl::android::media::audio::common::AudioChannelLayout;
+using ::aidl::android::media::audio::common::AudioDevice;
+using ::aidl::android::media::audio::common::AudioDeviceAddress;
+using ::aidl::android::media::audio::common::AudioFormatDescription;
+using ::aidl::android::media::audio::common::AudioFormatType;
+using ::aidl::android::media::audio::common::AudioOffloadInfo;
+using ::aidl::android::media::audio::common::MicrophoneDynamicInfo;
+using ::aidl::android::media::audio::common::MicrophoneInfo;
+using ::android::bluetooth::audio::aidl::BluetoothAudioPortAidl;
+using ::android::bluetooth::audio::aidl::BluetoothAudioPortAidlIn;
+using ::android::bluetooth::audio::aidl::BluetoothAudioPortAidlOut;
+using ::android::bluetooth::audio::aidl::BluetoothStreamState;
+
+constexpr int kBluetoothDefaultInputBufferMs = 20;
+constexpr int kBluetoothDefaultOutputBufferMs = 10;
+// constexpr int kBluetoothSpatializerOutputBufferMs = 10;
+
+size_t getFrameCount(uint64_t durationUs, uint32_t sampleRate) {
+    return (durationUs * sampleRate) / 1000000;
+}
+
+// pcm configuration params are not really used by the module
+StreamBluetooth::StreamBluetooth(StreamContext* context, const Metadata& metadata,
+                                 Module::BtProfileHandles&& btHandles)
+    : StreamCommonImpl(context, metadata),
+      mSampleRate(getContext().getSampleRate()),
+      mChannelLayout(getContext().getChannelLayout()),
+      mFormat(getContext().getFormat()),
+      mFrameSizeBytes(getContext().getFrameSize()),
+      mIsInput(isInput(metadata)),
+      mBluetoothA2dp(std::move(std::get<Module::BtInterface::BTA2DP>(btHandles))),
+      mBluetoothLe(std::move(std::get<Module::BtInterface::BTLE>(btHandles))) {
+    mPreferredDataIntervalUs =
+            mIsInput ? kBluetoothDefaultInputBufferMs : kBluetoothDefaultOutputBufferMs;
+    mPreferredFrameCount = getFrameCount(mPreferredDataIntervalUs, mSampleRate);
+    mIsInitialized = false;
+    mIsReadyToClose = false;
+}
+
+::android::status_t StreamBluetooth::init() {
+    return ::android::OK;  // defering this till we get AudioDeviceDescription
+}
+
+const StreamCommonInterface::ConnectedDevices& StreamBluetooth::getConnectedDevices() const {
+    std::lock_guard guard(mLock);
+    return StreamCommonImpl::getConnectedDevices();
+}
+
+ndk::ScopedAStatus StreamBluetooth::setConnectedDevices(
+        const std::vector<AudioDevice>& connectedDevices) {
+    if (mIsInput && connectedDevices.size() > 1) {
+        LOG(ERROR) << __func__ << ": wrong device size(" << connectedDevices.size()
+                   << ") for input stream";
+        return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
+    for (const auto& connectedDevice : connectedDevices) {
+        if (connectedDevice.address.getTag() != AudioDeviceAddress::mac) {
+            LOG(ERROR) << __func__ << ": bad device address" << connectedDevice.address.toString();
+            return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+        }
+    }
+    std::lock_guard guard(mLock);
+    RETURN_STATUS_IF_ERROR(StreamCommonImpl::setConnectedDevices(connectedDevices));
+    mIsInitialized = false;  // updated connected device list, need initialization
+    return ndk::ScopedAStatus::ok();
+}
+
+::android::status_t StreamBluetooth::drain(StreamDescriptor::DrainMode) {
+    usleep(1000);
+    return ::android::OK;
+}
+
+::android::status_t StreamBluetooth::flush() {
+    usleep(1000);
+    return ::android::OK;
+}
+
+::android::status_t StreamBluetooth::pause() {
+    return standby();
+}
+
+::android::status_t StreamBluetooth::transfer(void* buffer, size_t frameCount,
+                                              size_t* actualFrameCount, int32_t* latencyMs) {
+    std::lock_guard guard(mLock);
+    if (!mIsInitialized || mIsReadyToClose) {
+        // 'setConnectedDevices' has been called or stream is ready to close, so no transfers
+        *actualFrameCount = 0;
+        *latencyMs = StreamDescriptor::LATENCY_UNKNOWN;
+        return ::android::OK;
+    }
+    *actualFrameCount = 0;
+    *latencyMs = 0;
+    for (auto proxy : mBtDeviceProxies) {
+        if (!proxy->start()) {
+            LOG(ERROR) << __func__ << ": state = " << proxy->getState() << " failed to start ";
+            return -EIO;
+        }
+        const size_t fc = std::min(frameCount, mPreferredFrameCount);
+        const size_t bytesToTransfer = fc * mFrameSizeBytes;
+        if (mIsInput) {
+            const size_t totalRead = proxy->readData(buffer, bytesToTransfer);
+            *actualFrameCount = std::max(*actualFrameCount, totalRead / mFrameSizeBytes);
+        } else {
+            const size_t totalWrite = proxy->writeData(buffer, bytesToTransfer);
+            *actualFrameCount = std::max(*actualFrameCount, totalWrite / mFrameSizeBytes);
+        }
+        PresentationPosition presentation_position;
+        if (!proxy->getPresentationPosition(presentation_position)) {
+            LOG(ERROR) << __func__ << ": getPresentationPosition returned error ";
+            return ::android::UNKNOWN_ERROR;
+        }
+        *latencyMs =
+                std::max(*latencyMs, (int32_t)(presentation_position.remoteDeviceAudioDelayNanos /
+                                               NANOS_PER_MILLISECOND));
+    }
+    return ::android::OK;
+}
+
+::android::status_t StreamBluetooth::initialize() {
+    if (!::aidl::android::hardware::bluetooth::audio::BluetoothAudioSession::IsAidlAvailable()) {
+        LOG(ERROR) << __func__ << ": IBluetoothAudioProviderFactory service not available";
+        return ::android::UNKNOWN_ERROR;
+    }
+    if (StreamCommonImpl::getConnectedDevices().empty()) {
+        LOG(ERROR) << __func__ << ", has no connected devices";
+        return ::android::NO_INIT;
+    }
+    // unregister older proxies (if any)
+    for (auto proxy : mBtDeviceProxies) {
+        proxy->stop();
+        proxy->unregisterPort();
+    }
+    mBtDeviceProxies.clear();
+    for (auto it = StreamCommonImpl::getConnectedDevices().begin();
+         it != StreamCommonImpl::getConnectedDevices().end(); ++it) {
+        std::shared_ptr<BluetoothAudioPortAidl> proxy =
+                mIsInput ? std::shared_ptr<BluetoothAudioPortAidl>(
+                                   std::make_shared<BluetoothAudioPortAidlIn>())
+                         : std::shared_ptr<BluetoothAudioPortAidl>(
+                                   std::make_shared<BluetoothAudioPortAidlOut>());
+        if (proxy->registerPort(it->type)) {
+            LOG(ERROR) << __func__ << ": cannot init HAL";
+            return ::android::UNKNOWN_ERROR;
+        }
+        PcmConfiguration config;
+        if (!proxy->loadAudioConfig(&config)) {
+            LOG(ERROR) << __func__ << ": state=" << proxy->getState()
+                       << " failed to get audio config";
+            return ::android::UNKNOWN_ERROR;
+        }
+        // TODO: Ensure minimum duration for spatialized output?
+        // WAR to support Mono / 16 bits per sample as the Bluetooth stack required
+        if (!mIsInput && config.channelMode == ChannelMode::MONO && config.bitsPerSample == 16) {
+            proxy->forcePcmStereoToMono(true);
+            config.channelMode = ChannelMode::STEREO;
+            LOG(INFO) << __func__ << ": force channels = to be AUDIO_CHANNEL_OUT_STEREO";
+        }
+        if (!checkConfigParams(config)) {
+            LOG(ERROR) << __func__ << " checkConfigParams failed";
+            return ::android::UNKNOWN_ERROR;
+        }
+        mBtDeviceProxies.push_back(std::move(proxy));
+    }
+    mIsInitialized = true;
+    return ::android::OK;
+}
+
+bool StreamBluetooth::checkConfigParams(
+        ::aidl::android::hardware::bluetooth::audio::PcmConfiguration& config) {
+    if ((int)mSampleRate != config.sampleRateHz) {
+        LOG(ERROR) << __func__ << ": Sample Rate mismatch, stream val = " << mSampleRate
+                   << " hal val = " << config.sampleRateHz;
+        return false;
+    }
+    auto channelCount = aidl::android::hardware::audio::common::getChannelCount(mChannelLayout);
+    if ((config.channelMode == ChannelMode::MONO && channelCount != 1) ||
+        (config.channelMode == ChannelMode::STEREO && channelCount != 2)) {
+        LOG(ERROR) << __func__ << ": Channel count mismatch, stream val = " << channelCount
+                   << " hal val = " << toString(config.channelMode);
+        return false;
+    }
+    if (mFormat.type != AudioFormatType::PCM) {
+        LOG(ERROR) << __func__ << ": unexpected format type "
+                   << aidl::android::media::audio::common::toString(mFormat.type);
+        return false;
+    }
+    int8_t bps = aidl::android::hardware::audio::common::getPcmSampleSizeInBytes(mFormat.pcm) * 8;
+    if (bps != config.bitsPerSample) {
+        LOG(ERROR) << __func__ << ": bits per sample mismatch, stream val = " << bps
+                   << " hal val = " << config.bitsPerSample;
+        return false;
+    }
+    if (config.dataIntervalUs > 0) {
+        mPreferredDataIntervalUs =
+                std::min((int32_t)mPreferredDataIntervalUs, config.dataIntervalUs);
+        mPreferredFrameCount = getFrameCount(mPreferredDataIntervalUs, mSampleRate);
+    }
+    return true;
+}
+
+ndk::ScopedAStatus StreamBluetooth::prepareToClose() {
+    std::lock_guard guard(mLock);
+    mIsReadyToClose = true;
+    return ndk::ScopedAStatus::ok();
+}
+
+::android::status_t StreamBluetooth::standby() {
+    std::lock_guard guard(mLock);
+    if (!mIsInitialized) {
+        if (auto status = initialize(); status != ::android::OK) return status;
+    }
+    for (auto proxy : mBtDeviceProxies) {
+        if (!proxy->suspend()) {
+            LOG(ERROR) << __func__ << ": state = " << proxy->getState() << " failed to stand by ";
+            return -EIO;
+        }
+    }
+    return ::android::OK;
+}
+
+::android::status_t StreamBluetooth::start() {
+    std::lock_guard guard(mLock);
+    if (!mIsInitialized) return initialize();
+    return ::android::OK;
+}
+
+void StreamBluetooth::shutdown() {
+    std::lock_guard guard(mLock);
+    for (auto proxy : mBtDeviceProxies) {
+        proxy->stop();
+        proxy->unregisterPort();
+    }
+    mBtDeviceProxies.clear();
+}
+
+ndk::ScopedAStatus StreamBluetooth::updateMetadataCommon(const Metadata& metadata) {
+    std::lock_guard guard(mLock);
+    if (!mIsInitialized) return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    bool isOk = true;
+    if (isInput(metadata)) {
+        isOk = mBtDeviceProxies[0]->updateSinkMetadata(std::get<SinkMetadata>(metadata));
+    } else {
+        for (auto proxy : mBtDeviceProxies) {
+            if (!proxy->updateSourceMetadata(std::get<SourceMetadata>(metadata))) isOk = false;
+        }
+    }
+    return isOk ? ndk::ScopedAStatus::ok()
+                : ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus StreamBluetooth::bluetoothParametersUpdated() {
+    if (mIsInput) {
+        LOG(WARNING) << __func__ << ": not handled";
+        return ndk::ScopedAStatus::ok();
+    }
+    auto applyParam = [](const std::shared_ptr<BluetoothAudioPortAidl>& proxy,
+                         bool isEnabled) -> bool {
+        if (!isEnabled) {
+            if (proxy->suspend()) return proxy->setState(BluetoothStreamState::DISABLED);
+            return false;
+        }
+        return proxy->standby();
+    };
+    bool hasA2dpParam, enableA2dp;
+    auto btA2dp = mBluetoothA2dp.lock();
+    hasA2dpParam = btA2dp != nullptr && btA2dp->isEnabled(&enableA2dp).isOk();
+    bool hasLeParam, enableLe;
+    auto btLe = mBluetoothLe.lock();
+    hasLeParam = btLe != nullptr && btLe->isEnabled(&enableLe).isOk();
+    std::unique_lock lock(mLock);
+    ::android::base::ScopedLockAssertion lock_assertion(mLock);
+    if (!mIsInitialized) {
+        LOG(WARNING) << __func__ << ": init not done";
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
+    }
+    for (auto proxy : mBtDeviceProxies) {
+        if ((hasA2dpParam && proxy->isA2dp() && !applyParam(proxy, enableA2dp)) ||
+            (hasLeParam && proxy->isLeAudio() && !applyParam(proxy, enableLe))) {
+            LOG(DEBUG) << __func__ << ": applyParam failed";
+            return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+        }
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+StreamInBluetooth::StreamInBluetooth(StreamContext&& context, const SinkMetadata& sinkMetadata,
+                                     const std::vector<MicrophoneInfo>& microphones,
+                                     Module::BtProfileHandles&& btProfileHandles)
+    : StreamIn(std::move(context), microphones),
+      StreamBluetooth(&mContextInstance, sinkMetadata, std::move(btProfileHandles)) {}
+
+ndk::ScopedAStatus StreamInBluetooth::getActiveMicrophones(
+        std::vector<MicrophoneDynamicInfo>* _aidl_return __unused) {
+    LOG(DEBUG) << __func__ << ": not supported";
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+StreamOutBluetooth::StreamOutBluetooth(StreamContext&& context,
+                                       const SourceMetadata& sourceMetadata,
+                                       const std::optional<AudioOffloadInfo>& offloadInfo,
+                                       Module::BtProfileHandles&& btProfileHandles)
+    : StreamOut(std::move(context), offloadInfo),
+      StreamBluetooth(&mContextInstance, sourceMetadata, std::move(btProfileHandles)) {}
+
+}  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/config/audioPolicy/engine/api/current.txt b/audio/aidl/default/config/audioPolicy/engine/api/current.txt
index 59574f3..063b05d 100644
--- a/audio/aidl/default/config/audioPolicy/engine/api/current.txt
+++ b/audio/aidl/default/config/audioPolicy/engine/api/current.txt
@@ -209,11 +209,13 @@
   public enum UsageEnumType {
     method @NonNull public String getRawName();
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_ALARM;
+    enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_ANNOUNCEMENT;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_ASSISTANCE_SONIFICATION;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_ASSISTANT;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_CALL_ASSISTANT;
+    enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_EMERGENCY;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_GAME;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_MEDIA;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_NOTIFICATION;
@@ -222,7 +224,9 @@
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_NOTIFICATION_EVENT;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE;
+    enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_SAFETY;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_UNKNOWN;
+    enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_VEHICLE_STATUS;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_VIRTUAL_SOURCE;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_VOICE_COMMUNICATION;
     enum_constant public static final android.audio.policy.engine.configuration.UsageEnumType AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING;
diff --git a/audio/aidl/default/config/audioPolicy/engine/audio_policy_engine_configuration.xsd b/audio/aidl/default/config/audioPolicy/engine/audio_policy_engine_configuration.xsd
index b58a6c8..40396bb 100644
--- a/audio/aidl/default/config/audioPolicy/engine/audio_policy_engine_configuration.xsd
+++ b/audio/aidl/default/config/audioPolicy/engine/audio_policy_engine_configuration.xsd
@@ -359,6 +359,10 @@
             <xs:enumeration value="AUDIO_USAGE_VIRTUAL_SOURCE"/>
             <xs:enumeration value="AUDIO_USAGE_ASSISTANT"/>
             <xs:enumeration value="AUDIO_USAGE_CALL_ASSISTANT"/>
+            <xs:enumeration value="AUDIO_USAGE_EMERGENCY" />
+            <xs:enumeration value="AUDIO_USAGE_SAFETY" />
+            <xs:enumeration value="AUDIO_USAGE_VEHICLE_STATUS" />
+            <xs:enumeration value="AUDIO_USAGE_ANNOUNCEMENT" />
         </xs:restriction>
     </xs:simpleType>
 
diff --git a/audio/aidl/default/include/core-impl/Bluetooth.h b/audio/aidl/default/include/core-impl/Bluetooth.h
index 10e9045..44899bc 100644
--- a/audio/aidl/default/include/core-impl/Bluetooth.h
+++ b/audio/aidl/default/include/core-impl/Bluetooth.h
@@ -22,6 +22,15 @@
 
 namespace aidl::android::hardware::audio::core {
 
+class ParamChangeHandler {
+  public:
+    ParamChangeHandler() = default;
+    void registerHandler(std::function<ndk::ScopedAStatus()> handler) { mHandler = handler; }
+
+  protected:
+    std::function<ndk::ScopedAStatus()> mHandler = nullptr;
+};
+
 class Bluetooth : public BnBluetooth {
   public:
     Bluetooth();
@@ -34,7 +43,7 @@
     HfpConfig mHfpConfig;
 };
 
-class BluetoothA2dp : public BnBluetoothA2dp {
+class BluetoothA2dp : public BnBluetoothA2dp, public ParamChangeHandler {
   public:
     BluetoothA2dp() = default;
 
@@ -49,7 +58,7 @@
     bool mEnabled = false;
 };
 
-class BluetoothLe : public BnBluetoothLe {
+class BluetoothLe : public BnBluetoothLe, public ParamChangeHandler {
   public:
     BluetoothLe() = default;
 
diff --git a/audio/aidl/default/include/core-impl/Configuration.h b/audio/aidl/default/include/core-impl/Configuration.h
index 25bf7af..6277c38 100644
--- a/audio/aidl/default/include/core-impl/Configuration.h
+++ b/audio/aidl/default/include/core-impl/Configuration.h
@@ -47,5 +47,6 @@
 std::unique_ptr<Configuration> getRSubmixConfiguration();
 std::unique_ptr<Configuration> getStubConfiguration();
 std::unique_ptr<Configuration> getUsbConfiguration();
+std::unique_ptr<Configuration> getBluetoothConfiguration();
 
 }  // namespace aidl::android::hardware::audio::core::internal
diff --git a/audio/aidl/default/include/core-impl/DevicePortProxy.h b/audio/aidl/default/include/core-impl/DevicePortProxy.h
new file mode 100644
index 0000000..13b8c91
--- /dev/null
+++ b/audio/aidl/default/include/core-impl/DevicePortProxy.h
@@ -0,0 +1,242 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <condition_variable>
+#include <mutex>
+
+#include <android-base/thread_annotations.h>
+
+#include <aidl/android/hardware/audio/common/SinkMetadata.h>
+#include <aidl/android/hardware/audio/common/SourceMetadata.h>
+#include <aidl/android/hardware/bluetooth/audio/BluetoothAudioStatus.h>
+#include <aidl/android/hardware/bluetooth/audio/PcmConfiguration.h>
+#include <aidl/android/hardware/bluetooth/audio/SessionType.h>
+#include <aidl/android/media/audio/common/AudioDeviceDescription.h>
+
+#include "BluetoothAudioSessionControl.h"
+
+namespace android::bluetooth::audio::aidl {
+
+enum class BluetoothStreamState : uint8_t {
+    DISABLED = 0,  // This stream is closing or Bluetooth profiles (A2DP/LE) is disabled
+    STANDBY,
+    STARTING,
+    STARTED,
+    SUSPENDING,
+    UNKNOWN,
+};
+
+std::ostream& operator<<(std::ostream& os, const BluetoothStreamState& state);
+
+/**
+ * Proxy for Bluetooth Audio HW Module to communicate with Bluetooth Audio
+ * Session Control. All methods are not thread safe, so users must acquire a
+ * lock. Note: currently, getState() of DevicePortProxy is only used for
+ * verbose logging, it is not locked, so the state may not be synchronized.
+ */
+class BluetoothAudioPort {
+  public:
+    BluetoothAudioPort() = default;
+    virtual ~BluetoothAudioPort() = default;
+
+    /**
+     * Fetch output control / data path of BluetoothAudioPort and setup
+     * callbacks into BluetoothAudioProvider. If registerPort() returns false, the audio
+     * HAL must delete this BluetoothAudioPort and return EINVAL to caller
+     */
+    virtual bool registerPort(
+            const ::aidl::android::media::audio::common::AudioDeviceDescription&) = 0;
+
+    /**
+     * Unregister this BluetoothAudioPort from BluetoothAudioSessionControl.
+     * Audio HAL must delete this BluetoothAudioPort after calling this.
+     */
+    virtual void unregisterPort() = 0;
+
+    /**
+     * When the Audio framework / HAL tries to query audio config about format,
+     * channel mask and sample rate, it uses this function to fetch from the
+     * Bluetooth stack
+     */
+    virtual bool loadAudioConfig(
+            ::aidl::android::hardware::bluetooth::audio::PcmConfiguration*) const = 0;
+
+    /**
+     * WAR to support Mono mode / 16 bits per sample
+     */
+    virtual void forcePcmStereoToMono(bool) = 0;
+
+    /**
+     * When the Audio framework / HAL wants to change the stream state, it invokes
+     * these 4 functions to control the Bluetooth stack (Audio Control Path).
+     * Note: standby(), start() and suspend() will return true when there are no errors.
+
+     * Called by Audio framework / HAL to change the state to stand by. When A2DP/LE profile is
+     * disabled, the port is first set to STANDBY by calling suspend and then mState is set to
+     * DISABLED. To reset the state back to STANDBY this method is called.
+     */
+    virtual bool standby() = 0;
+
+    /**
+     * Called by Audio framework / HAL to start the stream
+     */
+    virtual bool start() = 0;
+
+    /**
+     * Called by Audio framework / HAL to suspend the stream
+     */
+    virtual bool suspend() = 0;
+
+    /**
+     * Called by Audio framework / HAL to stop the stream
+     */
+    virtual void stop() = 0;
+
+    /**
+     * Called by the Audio framework / HAL to fetch information about audio frames
+     * presented to an external sink, or frames presented fror an internal sink
+     */
+    virtual bool getPresentationPosition(
+            ::aidl::android::hardware::bluetooth::audio::PresentationPosition&) const = 0;
+
+    /**
+     * Called by the Audio framework / HAL when the metadata of the stream's
+     * source has been changed.
+     */
+    virtual bool updateSourceMetadata(
+            const ::aidl::android::hardware::audio::common::SourceMetadata&) const {
+        return false;
+    }
+
+    /**
+     * Called by the Audio framework / HAL when the metadata of the stream's
+     * sink has been changed.
+     */
+    virtual bool updateSinkMetadata(
+            const ::aidl::android::hardware::audio::common::SinkMetadata&) const {
+        return false;
+    }
+
+    /**
+     * Return the current BluetoothStreamState
+     */
+    virtual BluetoothStreamState getState() const = 0;
+
+    /**
+     * Set the current BluetoothStreamState
+     */
+    virtual bool setState(BluetoothStreamState) = 0;
+
+    virtual bool isA2dp() const = 0;
+
+    virtual bool isLeAudio() const = 0;
+
+    virtual bool getPreferredDataIntervalUs(size_t*) const = 0;
+
+    virtual size_t writeData(const void*, size_t) const { return 0; }
+
+    virtual size_t readData(void*, size_t) const { return 0; }
+};
+
+class BluetoothAudioPortAidl : public BluetoothAudioPort {
+  public:
+    BluetoothAudioPortAidl();
+    virtual ~BluetoothAudioPortAidl();
+
+    bool registerPort(const ::aidl::android::media::audio::common::AudioDeviceDescription&
+                              description) override;
+
+    void unregisterPort() override;
+
+    bool loadAudioConfig(::aidl::android::hardware::bluetooth::audio::PcmConfiguration* audio_cfg)
+            const override;
+
+    void forcePcmStereoToMono(bool force) override { mIsStereoToMono = force; }
+
+    bool standby() override;
+    bool start() override;
+    bool suspend() override;
+    void stop() override;
+
+    bool getPresentationPosition(::aidl::android::hardware::bluetooth::audio::PresentationPosition&
+                                         presentation_position) const override;
+
+    bool updateSourceMetadata(const ::aidl::android::hardware::audio::common::SourceMetadata&
+                                      sourceMetadata) const override;
+
+    bool updateSinkMetadata(const ::aidl::android::hardware::audio::common::SinkMetadata&
+                                    sinkMetadata) const override;
+
+    /**
+     * Return the current BluetoothStreamState
+     * Note: This method is used for logging, does not lock, so value returned may not be latest
+     */
+    BluetoothStreamState getState() const override NO_THREAD_SAFETY_ANALYSIS;
+
+    bool setState(BluetoothStreamState state) override;
+
+    bool isA2dp() const override;
+
+    bool isLeAudio() const override;
+
+    bool getPreferredDataIntervalUs(size_t* interval_us) const override;
+
+  protected:
+    uint16_t mCookie;
+    BluetoothStreamState mState GUARDED_BY(mCvMutex);
+    ::aidl::android::hardware::bluetooth::audio::SessionType mSessionType;
+    // WR to support Mono: True if fetching Stereo and mixing into Mono
+    bool mIsStereoToMono = false;
+
+    bool inUse() const;
+
+    std::string debugMessage() const;
+
+  private:
+    // start()/suspend() report state change status via callback. Wait until kMaxWaitingTimeMs or a
+    // state change after a call to start()/suspend() and analyse the returned status. Below mutex,
+    // conditional variable serves this purpose.
+    mutable std::mutex mCvMutex;
+    std::condition_variable mInternalCv GUARDED_BY(mCvMutex);
+
+    // Check and initialize session type for |devices| If failed, this
+    // BluetoothAudioPortAidl is not initialized and must be deleted.
+    bool initSessionType(
+            const ::aidl::android::media::audio::common::AudioDeviceDescription& description);
+
+    bool condWaitState(BluetoothStreamState state);
+
+    void controlResultHandler(
+            uint16_t cookie,
+            const ::aidl::android::hardware::bluetooth::audio::BluetoothAudioStatus& status);
+    void sessionChangedHandler(uint16_t cookie);
+};
+
+class BluetoothAudioPortAidlOut : public BluetoothAudioPortAidl {
+  public:
+    // The audio data path to the Bluetooth stack (Software encoding)
+    size_t writeData(const void* buffer, size_t bytes) const override;
+};
+
+class BluetoothAudioPortAidlIn : public BluetoothAudioPortAidl {
+  public:
+    // The audio data path from the Bluetooth stack (Software decoded)
+    size_t readData(void* buffer, size_t bytes) const override;
+};
+
+}  // namespace android::bluetooth::audio::aidl
\ No newline at end of file
diff --git a/audio/aidl/default/include/core-impl/Module.h b/audio/aidl/default/include/core-impl/Module.h
index 539221d..fb3eef2 100644
--- a/audio/aidl/default/include/core-impl/Module.h
+++ b/audio/aidl/default/include/core-impl/Module.h
@@ -33,12 +33,17 @@
   public:
     // This value is used for all AudioPatches and reported by all streams.
     static constexpr int32_t kLatencyMs = 10;
-    enum Type : int { DEFAULT, R_SUBMIX, STUB, USB };
+    enum Type : int { DEFAULT, R_SUBMIX, STUB, USB, BLUETOOTH };
+    enum BtInterface : int { BTCONF, BTA2DP, BTLE };
 
     static std::shared_ptr<Module> createInstance(Type type);
 
     explicit Module(Type type) : mType(type) {}
 
+    typedef std::tuple<std::weak_ptr<IBluetooth>, std::weak_ptr<IBluetoothA2dp>,
+                       std::weak_ptr<IBluetoothLe>>
+            BtProfileHandles;
+
   protected:
     // The vendor extension done via inheritance can override interface methods and augment
     // a call to the base implementation.
@@ -185,6 +190,7 @@
     virtual std::unique_ptr<internal::Configuration> initializeConfig();
 
     // Utility and helper functions accessible to subclasses.
+    ndk::ScopedAStatus bluetoothParametersUpdated();
     void cleanUpPatch(int32_t patchId);
     ndk::ScopedAStatus createStreamContext(
             int32_t in_portConfigId, int64_t in_bufferSizeFrames,
@@ -196,6 +202,7 @@
     std::set<int32_t> findConnectedPortConfigIds(int32_t portConfigId);
     ndk::ScopedAStatus findPortIdForNewStream(
             int32_t in_portConfigId, ::aidl::android::media::audio::common::AudioPort** port);
+    virtual BtProfileHandles getBtProfileManagerHandles();
     internal::Configuration& getConfig();
     const ConnectedDevicePorts& getConnectedDevicePorts() const { return mConnectedDevicePorts; }
     bool getMasterMute() const { return mMasterMute; }
diff --git a/audio/aidl/default/include/core-impl/ModuleBluetooth.h b/audio/aidl/default/include/core-impl/ModuleBluetooth.h
new file mode 100644
index 0000000..68b4e6b
--- /dev/null
+++ b/audio/aidl/default/include/core-impl/ModuleBluetooth.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "core-impl/Bluetooth.h"
+#include "core-impl/Module.h"
+
+namespace aidl::android::hardware::audio::core {
+
+class ModuleBluetooth final : public Module {
+  public:
+    ModuleBluetooth() : Module(Type::BLUETOOTH) {}
+
+  private:
+    BtProfileHandles getBtProfileManagerHandles() override;
+
+    ndk::ScopedAStatus getBluetoothA2dp(std::shared_ptr<IBluetoothA2dp>* _aidl_return) override;
+    ndk::ScopedAStatus getBluetoothLe(std::shared_ptr<IBluetoothLe>* _aidl_return) override;
+    ndk::ScopedAStatus getMicMute(bool* _aidl_return) override;
+    ndk::ScopedAStatus setMicMute(bool in_mute) override;
+
+    ndk::ScopedAStatus createInputStream(
+            StreamContext&& context,
+            const ::aidl::android::hardware::audio::common::SinkMetadata& sinkMetadata,
+            const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones,
+            std::shared_ptr<StreamIn>* result) override;
+    ndk::ScopedAStatus createOutputStream(
+            StreamContext&& context,
+            const ::aidl::android::hardware::audio::common::SourceMetadata& sourceMetadata,
+            const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo>&
+                    offloadInfo,
+            std::shared_ptr<StreamOut>* result) override;
+    ndk::ScopedAStatus onMasterMuteChanged(bool mute) override;
+    ndk::ScopedAStatus onMasterVolumeChanged(float volume) override;
+
+    ChildInterface<IBluetoothA2dp> mBluetoothA2dp;
+    ChildInterface<IBluetoothLe> mBluetoothLe;
+};
+
+}  // namespace aidl::android::hardware::audio::core
\ No newline at end of file
diff --git a/audio/aidl/default/include/core-impl/Stream.h b/audio/aidl/default/include/core-impl/Stream.h
index fa2b760..a2edb6f 100644
--- a/audio/aidl/default/include/core-impl/Stream.h
+++ b/audio/aidl/default/include/core-impl/Stream.h
@@ -195,10 +195,10 @@
     virtual ::android::status_t start() = 0;
     virtual ::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
                                          int32_t* latencyMs) = 0;
-    // No need to implement 'getPosition' unless the driver can provide more precise
+    // No need to implement 'refinePosition' unless the driver can provide more precise
     // data than just total frame count. For example, the driver may correctly account
     // for any intermediate buffers.
-    virtual ::android::status_t getPosition(StreamDescriptor::Position* /*position*/) {
+    virtual ::android::status_t refinePosition(StreamDescriptor::Position* /*position*/) {
         return ::android::OK;
     }
     virtual void shutdown() = 0;  // This function is only called once.
@@ -354,6 +354,7 @@
     virtual const ConnectedDevices& getConnectedDevices() const = 0;
     virtual ndk::ScopedAStatus setConnectedDevices(
             const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) = 0;
+    virtual ndk::ScopedAStatus bluetoothParametersUpdated() = 0;
 };
 
 // This is equivalent to automatically generated 'IStreamCommonDelegator' but uses
@@ -454,6 +455,7 @@
     ndk::ScopedAStatus setConnectedDevices(
             const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices)
             override;
+    ndk::ScopedAStatus bluetoothParametersUpdated() override;
 
   protected:
     static StreamWorkerInterface::CreateInstance getDefaultInWorkerCreator() {
@@ -505,7 +507,7 @@
     StreamIn(StreamContext&& context,
              const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones);
 
-    StreamContext mContext;
+    StreamContext mContextInstance;
     const std::map<::aidl::android::media::audio::common::AudioDevice, std::string> mMicrophones;
 };
 
@@ -550,7 +552,7 @@
               const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo>&
                       offloadInfo);
 
-    StreamContext mContext;
+    StreamContext mContextInstance;
     const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo> mOffloadInfo;
     std::optional<::aidl::android::hardware::audio::common::AudioOffloadMetadata> mOffloadMetadata;
 };
@@ -584,6 +586,11 @@
         if (s) return s->setConnectedDevices(devices);
         return ndk::ScopedAStatus::ok();
     }
+    ndk::ScopedAStatus bluetoothParametersUpdated() {
+        auto s = mStream.lock();
+        if (s) return s->bluetoothParametersUpdated();
+        return ndk::ScopedAStatus::ok();
+    }
 
   private:
     std::weak_ptr<StreamCommonInterface> mStream;
@@ -612,6 +619,14 @@
         }
         return ndk::ScopedAStatus::ok();
     }
+    ndk::ScopedAStatus bluetoothParametersUpdated() {
+        bool isOk = true;
+        for (auto& it : mStreams) {
+            if (!it.second.bluetoothParametersUpdated().isOk()) isOk = false;
+        }
+        return isOk ? ndk::ScopedAStatus::ok()
+                    : ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
 
   private:
     // Maps port ids and port config ids to streams. Multimap because a port
diff --git a/audio/aidl/default/include/core-impl/StreamAlsa.h b/audio/aidl/default/include/core-impl/StreamAlsa.h
index f98a922..555b27a 100644
--- a/audio/aidl/default/include/core-impl/StreamAlsa.h
+++ b/audio/aidl/default/include/core-impl/StreamAlsa.h
@@ -41,7 +41,7 @@
     ::android::status_t start() override;
     ::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
                                  int32_t* latencyMs) override;
-    ::android::status_t getPosition(StreamDescriptor::Position* position) override;
+    ::android::status_t refinePosition(StreamDescriptor::Position* position) override;
     void shutdown() override;
 
   protected:
diff --git a/audio/aidl/default/include/core-impl/StreamBluetooth.h b/audio/aidl/default/include/core-impl/StreamBluetooth.h
new file mode 100644
index 0000000..c2f8c1d
--- /dev/null
+++ b/audio/aidl/default/include/core-impl/StreamBluetooth.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <mutex>
+#include <vector>
+
+#include <aidl/android/hardware/audio/core/IBluetooth.h>
+#include <aidl/android/hardware/audio/core/IBluetoothA2dp.h>
+#include <aidl/android/hardware/audio/core/IBluetoothLe.h>
+
+#include "core-impl/DevicePortProxy.h"
+#include "core-impl/Module.h"
+#include "core-impl/Stream.h"
+
+namespace aidl::android::hardware::audio::core {
+
+class StreamBluetooth : public StreamCommonImpl {
+  public:
+    StreamBluetooth(StreamContext* context, const Metadata& metadata,
+                    Module::BtProfileHandles&& btHandles);
+    // Methods of 'DriverInterface'.
+    ::android::status_t init() override;
+    ::android::status_t drain(StreamDescriptor::DrainMode) override;
+    ::android::status_t flush() override;
+    ::android::status_t pause() override;
+    ::android::status_t standby() override;
+    ::android::status_t start() override;
+    ::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
+                                 int32_t* latencyMs) override;
+    void shutdown() override;
+
+    // Overridden methods of 'StreamCommonImpl', called on a Binder thread.
+    ndk::ScopedAStatus updateMetadataCommon(const Metadata& metadata) override;
+    ndk::ScopedAStatus prepareToClose() override;
+    const ConnectedDevices& getConnectedDevices() const override;
+    ndk::ScopedAStatus setConnectedDevices(const ConnectedDevices& devices) override;
+    ndk::ScopedAStatus bluetoothParametersUpdated() override;
+
+  private:
+    // Audio Pcm Config
+    const uint32_t mSampleRate;
+    const ::aidl::android::media::audio::common::AudioChannelLayout mChannelLayout;
+    const ::aidl::android::media::audio::common::AudioFormatDescription mFormat;
+    const size_t mFrameSizeBytes;
+    const bool mIsInput;
+    const std::weak_ptr<IBluetoothA2dp> mBluetoothA2dp;
+    const std::weak_ptr<IBluetoothLe> mBluetoothLe;
+    size_t mPreferredDataIntervalUs;
+    size_t mPreferredFrameCount;
+
+    mutable std::mutex mLock;
+    bool mIsInitialized GUARDED_BY(mLock);
+    bool mIsReadyToClose GUARDED_BY(mLock);
+    std::vector<std::shared_ptr<::android::bluetooth::audio::aidl::BluetoothAudioPortAidl>>
+            mBtDeviceProxies GUARDED_BY(mLock);
+
+    ::android::status_t initialize() REQUIRES(mLock);
+    bool checkConfigParams(::aidl::android::hardware::bluetooth::audio::PcmConfiguration& config);
+};
+
+class StreamInBluetooth final : public StreamIn, public StreamBluetooth {
+  public:
+    friend class ndk::SharedRefBase;
+    StreamInBluetooth(
+            StreamContext&& context,
+            const ::aidl::android::hardware::audio::common::SinkMetadata& sinkMetadata,
+            const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones,
+            Module::BtProfileHandles&& btHandles);
+
+  private:
+    void onClose(StreamDescriptor::State) override { defaultOnClose(); }
+    ndk::ScopedAStatus getActiveMicrophones(
+            std::vector<::aidl::android::media::audio::common::MicrophoneDynamicInfo>* _aidl_return)
+            override;
+};
+
+class StreamOutBluetooth final : public StreamOut, public StreamBluetooth {
+  public:
+    friend class ndk::SharedRefBase;
+    StreamOutBluetooth(
+            StreamContext&& context,
+            const ::aidl::android::hardware::audio::common::SourceMetadata& sourceMetadata,
+            const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo>&
+                    offloadInfo,
+            Module::BtProfileHandles&& btHandles);
+
+  private:
+    void onClose(StreamDescriptor::State) override { defaultOnClose(); }
+};
+
+}  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/include/core-impl/StreamRemoteSubmix.h b/audio/aidl/default/include/core-impl/StreamRemoteSubmix.h
index 74854c6..94404a1 100644
--- a/audio/aidl/default/include/core-impl/StreamRemoteSubmix.h
+++ b/audio/aidl/default/include/core-impl/StreamRemoteSubmix.h
@@ -39,7 +39,7 @@
     ::android::status_t start() override;
     ::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
                                  int32_t* latencyMs) override;
-    ::android::status_t getPosition(StreamDescriptor::Position* position) override;
+    ::android::status_t refinePosition(StreamDescriptor::Position* position) override;
     void shutdown() override;
 
     // Overridden methods of 'StreamCommonImpl', called on a Binder thread.
diff --git a/audio/aidl/default/include/core-impl/StreamSwitcher.h b/audio/aidl/default/include/core-impl/StreamSwitcher.h
index 2cb8470..5764ad6 100644
--- a/audio/aidl/default/include/core-impl/StreamSwitcher.h
+++ b/audio/aidl/default/include/core-impl/StreamSwitcher.h
@@ -20,7 +20,7 @@
 
 namespace aidl::android::hardware::audio::core {
 
-// 'StreamSwitcher' is implementation of 'StreamCommonInterface' which allows
+// 'StreamSwitcher' is an implementation of 'StreamCommonInterface' which allows
 // dynamically switching the underlying stream implementation based on currently
 // connected devices. This is achieved by replacing inheritance from
 // 'StreamCommonImpl' with owning an instance of it. StreamSwitcher must be
@@ -129,6 +129,7 @@
     ndk::ScopedAStatus setConnectedDevices(
             const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices)
             override;
+    ndk::ScopedAStatus bluetoothParametersUpdated() override;
 
   protected:
     // Since switching a stream requires closing down the current stream, StreamSwitcher
@@ -187,6 +188,7 @@
     std::optional<int32_t> mHwAvSyncId;
     std::vector<VndParam> mMissedParameters;
     std::vector<std::shared_ptr<::aidl::android::hardware::audio::effect::IEffect>> mEffects;
+    bool mBluetoothParametersUpdated = false;
 };
 
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/main.cpp b/audio/aidl/default/main.cpp
index 93fb366..a0c0fab 100644
--- a/audio/aidl/default/main.cpp
+++ b/audio/aidl/default/main.cpp
@@ -65,7 +65,8 @@
         return std::make_pair(module, moduleBinder);
     };
     auto modules = {createModule(Module::Type::DEFAULT), createModule(Module::Type::R_SUBMIX),
-                    createModule(Module::Type::USB), createModule(Module::Type::STUB)};
+                    createModule(Module::Type::USB), createModule(Module::Type::STUB),
+                    createModule(Module::Type::BLUETOOTH)};
     (void)modules;
 
     ABinderProcess_joinThreadPool();
diff --git a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
index 74dea53..11838f8 100644
--- a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
+++ b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
@@ -184,7 +184,7 @@
                      : outWrite(buffer, frameCount, actualFrameCount));
 }
 
-::android::status_t StreamRemoteSubmix::getPosition(StreamDescriptor::Position* position) {
+::android::status_t StreamRemoteSubmix::refinePosition(StreamDescriptor::Position* position) {
     sp<MonoPipeReader> source = mCurrentRoute->getSource();
     if (source == nullptr) {
         return ::android::NO_INIT;
@@ -280,14 +280,18 @@
                                                size_t* actualFrameCount) {
     // about to read from audio source
     sp<MonoPipeReader> source = mCurrentRoute->getSource();
-    if (source == nullptr) {
-        int readErrorCount = mCurrentRoute->notifyReadError();
-        if (readErrorCount < kMaxReadErrorLogs) {
-            LOG(ERROR)
-                    << __func__
-                    << ": no audio pipe yet we're trying to read! (not all errors will be logged)";
+    if (source == nullptr || source->availableToRead() == 0) {
+        if (source == nullptr) {
+            int readErrorCount = mCurrentRoute->notifyReadError();
+            if (readErrorCount < kMaxReadErrorLogs) {
+                LOG(ERROR) << __func__
+                           << ": no audio pipe yet we're trying to read! (not all errors will be "
+                              "logged)";
+            } else {
+                LOG(ERROR) << __func__ << ": Read errors " << readErrorCount;
+            }
         } else {
-            LOG(ERROR) << __func__ << ": Read errors " << readErrorCount;
+            LOG(INFO) << __func__ << ": no data to read yet, providing empty data";
         }
         const size_t delayUs = static_cast<size_t>(
                 std::roundf(frameCount * MICROS_PER_SECOND / mStreamConfig.sampleRate));
@@ -344,11 +348,9 @@
     // recording (including this call): it's converted to usec and compared to how long we've been
     // recording for, which gives us how long we must wait to sync the projected recording time, and
     // the observed recording time.
-    static constexpr float kScaleFactor = .8f;
-    const size_t projectedVsObservedOffsetUs =
-            kScaleFactor * (static_cast<size_t>(std::roundf((readCounterFrames * MICROS_PER_SECOND /
-                                                             mStreamConfig.sampleRate) -
-                                                            recordDurationUs.count())));
+    const size_t projectedVsObservedOffsetUs = static_cast<size_t>(
+            std::roundf((readCounterFrames * MICROS_PER_SECOND / mStreamConfig.sampleRate) -
+                        recordDurationUs.count()));
 
     LOG(VERBOSE) << __func__ << ": record duration " << recordDurationUs.count()
                  << " microseconds, will wait: " << projectedVsObservedOffsetUs << " microseconds";
@@ -361,8 +363,7 @@
 StreamInRemoteSubmix::StreamInRemoteSubmix(StreamContext&& context,
                                            const SinkMetadata& sinkMetadata,
                                            const std::vector<MicrophoneInfo>& microphones)
-    : StreamIn(std::move(context), microphones),
-      StreamSwitcher(&(StreamIn::mContext), sinkMetadata) {}
+    : StreamIn(std::move(context), microphones), StreamSwitcher(&mContextInstance, sinkMetadata) {}
 
 ndk::ScopedAStatus StreamInRemoteSubmix::getActiveMicrophones(
         std::vector<MicrophoneDynamicInfo>* _aidl_return) {
@@ -403,7 +404,7 @@
                                              const SourceMetadata& sourceMetadata,
                                              const std::optional<AudioOffloadInfo>& offloadInfo)
     : StreamOut(std::move(context), offloadInfo),
-      StreamSwitcher(&(StreamOut::mContext), sourceMetadata) {}
+      StreamSwitcher(&mContextInstance, sourceMetadata) {}
 
 StreamSwitcher::DeviceSwitchBehavior StreamOutRemoteSubmix::switchCurrentStream(
         const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
diff --git a/audio/aidl/default/stub/StreamStub.cpp b/audio/aidl/default/stub/StreamStub.cpp
index 66f4605..9b6a759 100644
--- a/audio/aidl/default/stub/StreamStub.cpp
+++ b/audio/aidl/default/stub/StreamStub.cpp
@@ -120,11 +120,10 @@
 
 StreamInStub::StreamInStub(StreamContext&& context, const SinkMetadata& sinkMetadata,
                            const std::vector<MicrophoneInfo>& microphones)
-    : StreamIn(std::move(context), microphones), StreamStub(&(StreamIn::mContext), sinkMetadata) {}
+    : StreamIn(std::move(context), microphones), StreamStub(&mContextInstance, sinkMetadata) {}
 
 StreamOutStub::StreamOutStub(StreamContext&& context, const SourceMetadata& sourceMetadata,
                              const std::optional<AudioOffloadInfo>& offloadInfo)
-    : StreamOut(std::move(context), offloadInfo),
-      StreamStub(&(StreamOut::mContext), sourceMetadata) {}
+    : StreamOut(std::move(context), offloadInfo), StreamStub(&mContextInstance, sourceMetadata) {}
 
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/usb/StreamUsb.cpp b/audio/aidl/default/usb/StreamUsb.cpp
index 9684a87..4efe0d8 100644
--- a/audio/aidl/default/usb/StreamUsb.cpp
+++ b/audio/aidl/default/usb/StreamUsb.cpp
@@ -85,7 +85,7 @@
 
 StreamInUsb::StreamInUsb(StreamContext&& context, const SinkMetadata& sinkMetadata,
                          const std::vector<MicrophoneInfo>& microphones)
-    : StreamIn(std::move(context), microphones), StreamUsb(&(StreamIn::mContext), sinkMetadata) {}
+    : StreamIn(std::move(context), microphones), StreamUsb(&mContextInstance, sinkMetadata) {}
 
 ndk::ScopedAStatus StreamInUsb::getActiveMicrophones(
         std::vector<MicrophoneDynamicInfo>* _aidl_return __unused) {
@@ -96,7 +96,7 @@
 StreamOutUsb::StreamOutUsb(StreamContext&& context, const SourceMetadata& sourceMetadata,
                            const std::optional<AudioOffloadInfo>& offloadInfo)
     : StreamOut(std::move(context), offloadInfo),
-      StreamUsb(&(StreamOut::mContext), sourceMetadata),
+      StreamUsb(&mContextInstance, sourceMetadata),
       mChannelCount(getChannelCount(getContext().getChannelLayout())) {}
 
 ndk::ScopedAStatus StreamOutUsb::getHwVolume(std::vector<float>* _aidl_return) {
diff --git a/audio/policy/1.0/xml/api/current.txt b/audio/policy/1.0/xml/api/current.txt
index 84a2b71..01d77d7 100644
--- a/audio/policy/1.0/xml/api/current.txt
+++ b/audio/policy/1.0/xml/api/current.txt
@@ -209,11 +209,13 @@
   public enum UsageEnumType {
     method public String getRawName();
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ALARM;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ANNOUNCEMENT;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_SONIFICATION;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANT;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_CALL_ASSISTANT;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_EMERGENCY;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_GAME;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_MEDIA;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_NOTIFICATION;
@@ -222,7 +224,9 @@
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_NOTIFICATION_EVENT;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_SAFETY;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_UNKNOWN;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_VEHICLE_STATUS;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_VIRTUAL_SOURCE;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_VOICE_COMMUNICATION;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING;
diff --git a/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
index b58a6c8..40396bb 100644
--- a/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
+++ b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
@@ -359,6 +359,10 @@
             <xs:enumeration value="AUDIO_USAGE_VIRTUAL_SOURCE"/>
             <xs:enumeration value="AUDIO_USAGE_ASSISTANT"/>
             <xs:enumeration value="AUDIO_USAGE_CALL_ASSISTANT"/>
+            <xs:enumeration value="AUDIO_USAGE_EMERGENCY" />
+            <xs:enumeration value="AUDIO_USAGE_SAFETY" />
+            <xs:enumeration value="AUDIO_USAGE_VEHICLE_STATUS" />
+            <xs:enumeration value="AUDIO_USAGE_ANNOUNCEMENT" />
         </xs:restriction>
     </xs:simpleType>
 
diff --git a/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h b/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h
index 2e7298f..b3f4a0f 100644
--- a/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h
+++ b/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h
@@ -107,12 +107,18 @@
     // Gets the callback to be called when the request for this client has finished.
     std::shared_ptr<const IVehicleHardware::GetValuesCallback> getResultCallback();
 
-    // Marshals the updated values into largeParcelable and sents it through {@code onPropertyEvent}
+    // Marshals the updated values into largeParcelable and sends it through {@code onPropertyEvent}
     // callback.
     static void sendUpdatedValues(
             CallbackType callback,
             std::vector<aidl::android::hardware::automotive::vehicle::VehiclePropValue>&&
                     updatedValues);
+    // Marshals the set property error events into largeParcelable and sends it through
+    // {@code onPropertySetError} callback.
+    static void sendPropertySetErrors(
+            CallbackType callback,
+            std::vector<aidl::android::hardware::automotive::vehicle::VehiclePropError>&&
+                    vehiclePropErrors);
 
   protected:
     // Gets the callback to be called when the request for this client has timeout.
diff --git a/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h b/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h
index 9c29816..b6dbbc1 100644
--- a/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h
+++ b/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h
@@ -247,10 +247,14 @@
             const CallbackType& callback, std::shared_ptr<PendingRequestPool> pendingRequestPool);
 
     static void onPropertyChangeEvent(
-            std::weak_ptr<SubscriptionManager> subscriptionManager,
+            const std::weak_ptr<SubscriptionManager>& subscriptionManager,
             const std::vector<aidl::android::hardware::automotive::vehicle::VehiclePropValue>&
                     updatedValues);
 
+    static void onPropertySetErrorEvent(
+            const std::weak_ptr<SubscriptionManager>& subscriptionManager,
+            const std::vector<SetValueErrorEvent>& errorEvents);
+
     static void checkHealth(IVehicleHardware* hardware,
                             std::weak_ptr<SubscriptionManager> subscriptionManager);
 
diff --git a/automotive/vehicle/aidl/impl/vhal/include/SubscriptionManager.h b/automotive/vehicle/aidl/impl/vhal/include/SubscriptionManager.h
index 7c8f1b4..4912093 100644
--- a/automotive/vehicle/aidl/impl/vhal/include/SubscriptionManager.h
+++ b/automotive/vehicle/aidl/impl/vhal/include/SubscriptionManager.h
@@ -103,6 +103,11 @@
     // property has not been subscribed before or is not a continuous property.
     std::optional<float> getSampleRate(const ClientIdType& clientId, int32_t propId,
                                        int32_t areaId);
+    // For a list of set property error events, returns a map that maps clients subscribing to the
+    // properties to a list of errors for each client.
+    std::unordered_map<CallbackType,
+                       std::vector<aidl::android::hardware::automotive::vehicle::VehiclePropError>>
+    getSubscribedClientsForErrorEvents(const std::vector<SetValueErrorEvent>& errorEvents);
 
     // Checks whether the sample rate is valid.
     static bool checkSampleRate(float sampleRate);
diff --git a/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp b/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp
index 81d231c..fb23a25 100644
--- a/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp
@@ -38,6 +38,8 @@
 using ::aidl::android::hardware::automotive::vehicle::SetValueResult;
 using ::aidl::android::hardware::automotive::vehicle::SetValueResults;
 using ::aidl::android::hardware::automotive::vehicle::StatusCode;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropError;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropErrors;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValues;
 using ::android::base::Result;
@@ -300,7 +302,34 @@
     if (ScopedAStatus callbackStatus =
                 callback->onPropertyEvent(vehiclePropValues, sharedMemoryFileCount);
         !callbackStatus.isOk()) {
-        ALOGE("subscribe: failed to call UpdateValues callback, client ID: %p, error: %s, "
+        ALOGE("subscribe: failed to call onPropertyEvent callback, client ID: %p, error: %s, "
+              "exception: %d, service specific error: %d",
+              callback->asBinder().get(), callbackStatus.getMessage(),
+              callbackStatus.getExceptionCode(), callbackStatus.getServiceSpecificError());
+    }
+}
+
+void SubscriptionClient::sendPropertySetErrors(std::shared_ptr<IVehicleCallback> callback,
+                                               std::vector<VehiclePropError>&& vehiclePropErrors) {
+    if (vehiclePropErrors.empty()) {
+        return;
+    }
+
+    VehiclePropErrors vehiclePropErrorsLargeParcelable;
+    ScopedAStatus status = vectorToStableLargeParcelable(std::move(vehiclePropErrors),
+                                                         &vehiclePropErrorsLargeParcelable);
+    if (!status.isOk()) {
+        int statusCode = status.getServiceSpecificError();
+        ALOGE("subscribe: failed to marshal result into large parcelable, error: "
+              "%s, code: %d",
+              status.getMessage(), statusCode);
+        return;
+    }
+
+    if (ScopedAStatus callbackStatus =
+                callback->onPropertySetError(vehiclePropErrorsLargeParcelable);
+        !callbackStatus.isOk()) {
+        ALOGE("subscribe: failed to call onPropertySetError callback, client ID: %p, error: %s, "
               "exception: %d, service specific error: %d",
               callback->asBinder().get(), callbackStatus.getMessage(),
               callbackStatus.getExceptionCode(), callbackStatus.getServiceSpecificError());
diff --git a/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp b/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp
index b191aef..2e9a4b6 100644
--- a/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp
@@ -156,6 +156,11 @@
                     [subscriptionManagerCopy](std::vector<VehiclePropValue> updatedValues) {
                         onPropertyChangeEvent(subscriptionManagerCopy, updatedValues);
                     }));
+    mVehicleHardware->registerOnPropertySetErrorEvent(
+            std::make_unique<IVehicleHardware::PropertySetErrorCallback>(
+                    [subscriptionManagerCopy](std::vector<SetValueErrorEvent> errorEvents) {
+                        onPropertySetErrorEvent(subscriptionManagerCopy, errorEvents);
+                    }));
 
     // Register heartbeat event.
     mRecurrentAction =
@@ -189,7 +194,7 @@
 }
 
 void DefaultVehicleHal::onPropertyChangeEvent(
-        std::weak_ptr<SubscriptionManager> subscriptionManager,
+        const std::weak_ptr<SubscriptionManager>& subscriptionManager,
         const std::vector<VehiclePropValue>& updatedValues) {
     auto manager = subscriptionManager.lock();
     if (manager == nullptr) {
@@ -206,6 +211,20 @@
     }
 }
 
+void DefaultVehicleHal::onPropertySetErrorEvent(
+        const std::weak_ptr<SubscriptionManager>& subscriptionManager,
+        const std::vector<SetValueErrorEvent>& errorEvents) {
+    auto manager = subscriptionManager.lock();
+    if (manager == nullptr) {
+        ALOGW("the SubscriptionManager is destroyed, DefaultVehicleHal is ending");
+        return;
+    }
+    auto vehiclePropErrorsByClient = manager->getSubscribedClientsForErrorEvents(errorEvents);
+    for (auto& [callback, vehiclePropErrors] : vehiclePropErrorsByClient) {
+        SubscriptionClient::sendPropertySetErrors(callback, std::move(vehiclePropErrors));
+    }
+}
+
 template <class T>
 std::shared_ptr<T> DefaultVehicleHal::getOrCreateClient(
         std::unordered_map<const AIBinder*, std::shared_ptr<T>>* clients,
@@ -669,15 +688,19 @@
         // Create a new SubscriptionClient if there isn't an existing one.
         mSubscriptionClients->maybeAddClient(callback);
 
-        // Since we have already check the sample rates, the following functions must succeed.
         if (!onChangeSubscriptions.empty()) {
-            return toScopedAStatus(mSubscriptionManager->subscribe(callback, onChangeSubscriptions,
-                                                                   /*isContinuousProperty=*/false));
+            auto result = mSubscriptionManager->subscribe(callback, onChangeSubscriptions,
+                                                          /*isContinuousProperty=*/false);
+            if (!result.ok()) {
+                return toScopedAStatus(result);
+            }
         }
         if (!continuousSubscriptions.empty()) {
-            return toScopedAStatus(mSubscriptionManager->subscribe(callback,
-                                                                   continuousSubscriptions,
-                                                                   /*isContinuousProperty=*/true));
+            auto result = mSubscriptionManager->subscribe(callback, continuousSubscriptions,
+                                                          /*isContinuousProperty=*/true);
+            if (!result.ok()) {
+                return toScopedAStatus(result);
+            }
         }
     }
     return ScopedAStatus::ok();
diff --git a/automotive/vehicle/aidl/impl/vhal/src/SubscriptionManager.cpp b/automotive/vehicle/aidl/impl/vhal/src/SubscriptionManager.cpp
index 2694401..566c303 100644
--- a/automotive/vehicle/aidl/impl/vhal/src/SubscriptionManager.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/src/SubscriptionManager.cpp
@@ -36,6 +36,7 @@
 using ::aidl::android::hardware::automotive::vehicle::IVehicleCallback;
 using ::aidl::android::hardware::automotive::vehicle::StatusCode;
 using ::aidl::android::hardware::automotive::vehicle::SubscribeOptions;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropError;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
 using ::android::base::Error;
 using ::android::base::Result;
@@ -281,6 +282,32 @@
     return clients;
 }
 
+std::unordered_map<std::shared_ptr<IVehicleCallback>, std::vector<VehiclePropError>>
+SubscriptionManager::getSubscribedClientsForErrorEvents(
+        const std::vector<SetValueErrorEvent>& errorEvents) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    std::unordered_map<std::shared_ptr<IVehicleCallback>, std::vector<VehiclePropError>> clients;
+
+    for (const auto& errorEvent : errorEvents) {
+        PropIdAreaId propIdAreaId{
+                .propId = errorEvent.propId,
+                .areaId = errorEvent.areaId,
+        };
+        if (mClientsByPropIdArea.find(propIdAreaId) == mClientsByPropIdArea.end()) {
+            continue;
+        }
+
+        for (const auto& [_, client] : mClientsByPropIdArea[propIdAreaId]) {
+            clients[client].push_back({
+                    .propId = errorEvent.propId,
+                    .areaId = errorEvent.areaId,
+                    .errorCode = errorEvent.errorCode,
+            });
+        }
+    }
+    return clients;
+}
+
 bool SubscriptionManager::isEmpty() {
     std::scoped_lock<std::mutex> lockGuard(mLock);
     return mSubscribedPropsByClient.empty() && mClientsByPropIdArea.empty();
diff --git a/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp b/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp
index f48b906..76b57c7 100644
--- a/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp
@@ -62,6 +62,7 @@
 using ::aidl::android::hardware::automotive::vehicle::VehicleAreaWindow;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfigs;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropError;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropErrors;
 using ::aidl::android::hardware::automotive::vehicle::VehicleProperty;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropertyAccess;
@@ -1656,6 +1657,63 @@
     ASSERT_EQ(msg.find("Vehicle HAL State: "), std::string::npos);
 }
 
+TEST_F(DefaultVehicleHalTest, testOnPropertySetErrorEvent) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = GLOBAL_ON_CHANGE_PROP,
+                    .areaIds = {0},
+            },
+            {
+                    .propId = GLOBAL_CONTINUOUS_PROP,
+                    .areaIds = {0},
+                    .sampleRate = 1,
+            },
+    };
+    auto status = getClient()->subscribe(getCallbackClient(), options, 0);
+    ASSERT_TRUE(status.isOk()) << "subscribe failed: " << status.getMessage();
+    std::vector<SetValueErrorEvent> errorEvents = {
+            {
+                    .propId = GLOBAL_ON_CHANGE_PROP,
+                    .areaId = 0,
+                    .errorCode = StatusCode::INTERNAL_ERROR,
+            },
+            {
+                    .propId = GLOBAL_ON_CHANGE_PROP,
+                    .areaId = 0,
+                    .errorCode = StatusCode::ACCESS_DENIED,
+            },
+            {
+                    .propId = GLOBAL_CONTINUOUS_PROP,
+                    .areaId = 0,
+                    .errorCode = StatusCode::INVALID_ARG,
+            },
+    };
+    std::vector<VehiclePropError> expectedResults = {
+            {
+                    .propId = GLOBAL_ON_CHANGE_PROP,
+                    .areaId = 0,
+                    .errorCode = StatusCode::INTERNAL_ERROR,
+            },
+            {
+                    .propId = GLOBAL_ON_CHANGE_PROP,
+                    .areaId = 0,
+                    .errorCode = StatusCode::ACCESS_DENIED,
+            },
+            {
+                    .propId = GLOBAL_CONTINUOUS_PROP,
+                    .areaId = 0,
+                    .errorCode = StatusCode::INVALID_ARG,
+            },
+    };
+    getHardware()->sendOnPropertySetErrorEvent(errorEvents);
+
+    ASSERT_EQ(getCallback()->countOnPropertySetErrorResults(), 1u);
+    auto maybeVehiclePropErrors = getCallback()->nextOnPropertySetErrorResults();
+    ASSERT_TRUE(maybeVehiclePropErrors.has_value());
+    const auto& vehiclePropErrors = maybeVehiclePropErrors.value();
+    ASSERT_THAT(vehiclePropErrors.payloads, UnorderedElementsAreArray(expectedResults));
+}
+
 }  // namespace vehicle
 }  // namespace automotive
 }  // namespace hardware
diff --git a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.cpp b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.cpp
index 0e46357..75b8257 100644
--- a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.cpp
@@ -63,8 +63,9 @@
     return storeResults(results, &mOnPropertyEventResults);
 }
 
-ScopedAStatus MockVehicleCallback::onPropertySetError(const VehiclePropErrors&) {
-    return ScopedAStatus::ok();
+ScopedAStatus MockVehicleCallback::onPropertySetError(const VehiclePropErrors& results) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    return storeResults(results, &mOnPropertySetErrorResults);
 }
 
 std::optional<GetValueResults> MockVehicleCallback::nextGetValueResults() {
@@ -87,6 +88,16 @@
     return mOnPropertyEventResults.size();
 }
 
+std::optional<VehiclePropErrors> MockVehicleCallback::nextOnPropertySetErrorResults() {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    return pop(mOnPropertySetErrorResults);
+}
+
+size_t MockVehicleCallback::countOnPropertySetErrorResults() {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    return mOnPropertySetErrorResults.size();
+}
+
 }  // namespace vehicle
 }  // namespace automotive
 }  // namespace hardware
diff --git a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.h b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.h
index 0faaa1f..91dbb7e 100644
--- a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.h
+++ b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleCallback.h
@@ -62,6 +62,9 @@
     nextSetValueResults();
     std::optional<aidl::android::hardware::automotive::vehicle::VehiclePropValues>
     nextOnPropertyEventResults();
+    size_t countOnPropertySetErrorResults();
+    std::optional<aidl::android::hardware::automotive::vehicle::VehiclePropErrors>
+    nextOnPropertySetErrorResults();
     size_t countOnPropertyEventResults();
 
   private:
@@ -73,6 +76,8 @@
     std::list<aidl::android::hardware::automotive::vehicle::VehiclePropValues>
             mOnPropertyEventResults GUARDED_BY(mLock);
     int32_t mSharedMemoryFileCount GUARDED_BY(mLock);
+    std::list<aidl::android::hardware::automotive::vehicle::VehiclePropErrors>
+            mOnPropertySetErrorResults GUARDED_BY(mLock);
 };
 
 }  // namespace vehicle
diff --git a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.cpp b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.cpp
index 4df4e1a..ba0d33d 100644
--- a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.cpp
@@ -131,8 +131,9 @@
 }
 
 void MockVehicleHardware::registerOnPropertySetErrorEvent(
-        std::unique_ptr<const PropertySetErrorCallback>) {
-    // TODO(b/200737967): mock this.
+        std::unique_ptr<const PropertySetErrorCallback> callback) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    mPropertySetErrorCallback = std::move(callback);
 }
 
 void MockVehicleHardware::setPropertyConfigs(const std::vector<VehiclePropConfig>& configs) {
@@ -254,6 +255,12 @@
         std::list<std::vector<SetValueRequest>>* storedRequests,
         std::list<std::vector<SetValueResult>>* storedResponses) const;
 
+void MockVehicleHardware::sendOnPropertySetErrorEvent(
+        const std::vector<SetValueErrorEvent>& errorEvents) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    (*mPropertySetErrorCallback)(errorEvents);
+}
+
 }  // namespace vehicle
 }  // namespace automotive
 }  // namespace hardware
diff --git a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.h b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.h
index 743841c..46b30b9 100644
--- a/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.h
+++ b/automotive/vehicle/aidl/impl/vhal/test/MockVehicleHardware.h
@@ -85,6 +85,7 @@
                    aidl::android::hardware::automotive::vehicle::StatusCode status);
     void setSleepTime(int64_t timeInNano);
     void setDumpResult(DumpResult result);
+    void sendOnPropertySetErrorEvent(const std::vector<SetValueErrorEvent>& errorEvents);
 
   private:
     mutable std::mutex mLock;
@@ -104,6 +105,7 @@
             mStatusByFunctions GUARDED_BY(mLock);
     int64_t mSleepTime GUARDED_BY(mLock) = 0;
     std::unique_ptr<const PropertyChangeCallback> mPropertyChangeCallback GUARDED_BY(mLock);
+    std::unique_ptr<const PropertySetErrorCallback> mPropertySetErrorCallback GUARDED_BY(mLock);
     std::function<aidl::android::hardware::automotive::vehicle::StatusCode(
             std::shared_ptr<const GetValuesCallback>,
             const std::vector<aidl::android::hardware::automotive::vehicle::GetValueRequest>&)>
diff --git a/bluetooth/audio/aidl/Android.bp b/bluetooth/audio/aidl/Android.bp
index 32f8cca..16b22fe 100644
--- a/bluetooth/audio/aidl/Android.bp
+++ b/bluetooth/audio/aidl/Android.bp
@@ -29,7 +29,7 @@
     imports: [
         "android.hardware.common-V2",
         "android.hardware.common.fmq-V1",
-        "android.hardware.audio.common-V1",
+        "android.hardware.audio.common-V2",
     ],
     backend: {
         cpp: {
@@ -69,7 +69,7 @@
             imports: [
                 "android.hardware.common-V2",
                 "android.hardware.common.fmq-V1",
-                "android.hardware.audio.common-V1",
+                "android.hardware.audio.common-V2",
             ],
         },
 
diff --git a/bluetooth/audio/aidl/vts/Android.bp b/bluetooth/audio/aidl/vts/Android.bp
index 3e6953f..fa85fa8 100644
--- a/bluetooth/audio/aidl/vts/Android.bp
+++ b/bluetooth/audio/aidl/vts/Android.bp
@@ -16,7 +16,7 @@
     tidy_timeout_srcs: ["VtsHalBluetoothAudioTargetTest.cpp"],
     srcs: ["VtsHalBluetoothAudioTargetTest.cpp"],
     static_libs: [
-        "android.hardware.audio.common-V1-ndk",
+        "android.hardware.audio.common-V2-ndk",
         "android.hardware.bluetooth.audio-V3-ndk",
         "android.hardware.common-V2-ndk",
         "android.hardware.common.fmq-V1-ndk",
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
index 2b0caad..b46b62c 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
@@ -20,6 +20,7 @@
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 #include <android/binder_manager.h>
+#include <hardware/audio.h>
 
 #include "BluetoothAudioSession.h"
 
@@ -538,23 +539,9 @@
 
 void BluetoothAudioSession::UpdateSourceMetadata(
     const struct source_metadata& source_metadata) {
-  std::lock_guard<std::recursive_mutex> guard(mutex_);
-  if (!IsSessionReady()) {
-    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
-               << " has NO session";
-    return;
-  }
-
   ssize_t track_count = source_metadata.track_count;
   LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_) << ","
             << track_count << " track(s)";
-  if (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
-      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-      session_type_ == SessionType::A2DP_SOFTWARE_DECODING_DATAPATH ||
-      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    return;
-  }
-
   SourceMetadata hal_source_metadata;
   hal_source_metadata.tracks.resize(track_count);
   for (int i = 0; i < track_count; i++) {
@@ -571,33 +558,14 @@
                  << toString(hal_source_metadata.tracks[i].contentType)
                  << ", gain=" << hal_source_metadata.tracks[i].gain;
   }
-
-  auto hal_retval = stack_iface_->updateSourceMetadata(hal_source_metadata);
-  if (!hal_retval.isOk()) {
-    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
-                 << toString(session_type_) << " failed";
-  }
+  UpdateSourceMetadata(hal_source_metadata);
 }
 
 void BluetoothAudioSession::UpdateSinkMetadata(
     const struct sink_metadata& sink_metadata) {
-  std::lock_guard<std::recursive_mutex> guard(mutex_);
-  if (!IsSessionReady()) {
-    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
-               << " has NO session";
-    return;
-  }
-
   ssize_t track_count = sink_metadata.track_count;
   LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_) << ","
             << track_count << " track(s)";
-  if (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
-      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-      session_type_ == SessionType::A2DP_SOFTWARE_DECODING_DATAPATH ||
-      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    return;
-  }
-
   SinkMetadata hal_sink_metadata;
   hal_sink_metadata.tracks.resize(track_count);
   for (int i = 0; i < track_count; i++) {
@@ -612,12 +580,57 @@
               << ", dest_device_address="
               << sink_metadata.tracks[i].dest_device_address;
   }
+  UpdateSinkMetadata(hal_sink_metadata);
+}
+
+bool BluetoothAudioSession::UpdateSourceMetadata(
+    const SourceMetadata& hal_source_metadata) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has NO session";
+    return false;
+  }
+
+  if (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_SOFTWARE_DECODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return false;
+  }
+
+  auto hal_retval = stack_iface_->updateSourceMetadata(hal_source_metadata);
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_) << " failed";
+    return false;
+  }
+  return true;
+}
+
+bool BluetoothAudioSession::UpdateSinkMetadata(
+    const SinkMetadata& hal_sink_metadata) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has NO session";
+    return false;
+  }
+
+  if (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_SOFTWARE_DECODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return false;
+  }
 
   auto hal_retval = stack_iface_->updateSinkMetadata(hal_sink_metadata);
   if (!hal_retval.isOk()) {
     LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
                  << toString(session_type_) << " failed";
+    return false;
   }
+  return true;
 }
 
 std::vector<LatencyMode> BluetoothAudioSession::GetSupportedLatencyModes() {
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.h b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.h
index faf4ffb..25c676a 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.h
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.h
@@ -23,12 +23,15 @@
 #include <aidl/android/hardware/bluetooth/audio/LatencyMode.h>
 #include <aidl/android/hardware/bluetooth/audio/SessionType.h>
 #include <fmq/AidlMessageQueue.h>
-#include <hardware/audio.h>
 
 #include <mutex>
 #include <unordered_map>
 #include <vector>
 
+// To avoid inclusion of hardware/audio.h
+struct sink_metadata;
+struct source_metadata;
+
 namespace aidl {
 namespace android {
 namespace hardware {
@@ -196,6 +199,9 @@
   bool GetPresentationPosition(PresentationPosition& presentation_position);
   void UpdateSourceMetadata(const struct source_metadata& source_metadata);
   void UpdateSinkMetadata(const struct sink_metadata& sink_metadata);
+  // New versions for AIDL-only clients.
+  bool UpdateSourceMetadata(const SourceMetadata& hal_source_metadata);
+  bool UpdateSinkMetadata(const SinkMetadata& hal_sink_metadata);
 
   std::vector<LatencyMode> GetSupportedLatencyModes();
   void SetLatencyMode(const LatencyMode& latency_mode);
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
index 881c6c1..6c60a3b 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
@@ -175,6 +175,26 @@
     }
   }
 
+  static bool UpdateSourceMetadata(const SessionType& session_type,
+                                   const SourceMetadata& source_metadata) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->UpdateSourceMetadata(source_metadata);
+    }
+    return false;
+  }
+
+  static bool UpdateSinkMetadata(const SessionType& session_type,
+                                 const SinkMetadata& sink_metadata) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->UpdateSinkMetadata(sink_metadata);
+    }
+    return false;
+  }
+
   static std::vector<LatencyMode> GetSupportedLatencyModes(
       const SessionType& session_type) {
     std::shared_ptr<BluetoothAudioSession> session_ptr =
diff --git a/compatibility_matrices/compatibility_matrix.8.xml b/compatibility_matrices/compatibility_matrix.8.xml
index 387648c..41d7ed1 100644
--- a/compatibility_matrices/compatibility_matrix.8.xml
+++ b/compatibility_matrices/compatibility_matrix.8.xml
@@ -60,14 +60,6 @@
              <instance>default</instance>
          </interface>
     </hal>
-    <hal format="hidl" optional="true">
-        <name>android.hardware.authsecret</name>
-        <version>1.0</version>
-        <interface>
-            <name>IAuthSecret</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.automotive.audiocontrol</name>
         <interface>