diff --git a/audio/aidl/common/StreamWorker.cpp b/audio/aidl/common/StreamWorker.cpp
index 0d2121c..8107655 100644
--- a/audio/aidl/common/StreamWorker.cpp
+++ b/audio/aidl/common/StreamWorker.cpp
@@ -106,6 +106,9 @@
         std::lock_guard<std::mutex> lock(mWorkerLock);
         mWorkerState = error.empty() ? WorkerState::RUNNING : WorkerState::STOPPED;
         mError = error;
+#if defined(__ANDROID__)
+        mTid = pthread_gettid_np(pthread_self());
+#endif
     }
     mWorkerCv.notify_one();
     if (!error.empty()) return;
diff --git a/audio/aidl/common/include/StreamWorker.h b/audio/aidl/common/include/StreamWorker.h
index e9c1070..efdcc81 100644
--- a/audio/aidl/common/include/StreamWorker.h
+++ b/audio/aidl/common/include/StreamWorker.h
@@ -16,6 +16,8 @@
 
 #pragma once
 
+#include <sys/types.h>
+
 #include <atomic>
 #include <condition_variable>
 #include <mutex>
@@ -52,6 +54,10 @@
         std::lock_guard<std::mutex> lock(mWorkerLock);
         return mError;
     }
+    pid_t getTid() {
+        std::lock_guard<std::mutex> lock(mWorkerLock);
+        return mTid;
+    }
     void stop();
     // Direct use of 'join' assumes that the StreamLogic is not intended
     // to run forever, and is guaranteed to exit by itself. This normally
@@ -78,6 +84,7 @@
     std::condition_variable mWorkerCv;
     WorkerState mWorkerState GUARDED_BY(mWorkerLock) = WorkerState::INITIAL;
     std::string mError GUARDED_BY(mWorkerLock);
+    pid_t mTid GUARDED_BY(mWorkerLock) = -1;
     // The atomic lock-free variable is used to prevent priority inversions
     // that can occur when a high priority worker tries to acquire the lock
     // which has been taken by a lower priority control thread which in its turn
@@ -143,6 +150,7 @@
     void resume() { mThread.resume(); }
     bool hasError() { return mThread.hasError(); }
     std::string getError() { return mThread.getError(); }
+    pid_t getTid() { return mThread.getTid(); }
     void stop() { mThread.stop(); }
     void join() { mThread.join(); }
     bool waitForAtLeastOneCycle() { return mThread.waitForAtLeastOneCycle(); }
diff --git a/audio/aidl/common/tests/streamworker_tests.cpp b/audio/aidl/common/tests/streamworker_tests.cpp
index f7a30b9..2b65740 100644
--- a/audio/aidl/common/tests/streamworker_tests.cpp
+++ b/audio/aidl/common/tests/streamworker_tests.cpp
@@ -87,6 +87,7 @@
 TEST_P(StreamWorkerInvalidTest, Uninitialized) {
     EXPECT_FALSE(worker.hasWorkerCycleCalled());
     EXPECT_FALSE(worker.hasError());
+    EXPECT_LE(worker.getTid(), 0);
 }
 
 TEST_P(StreamWorkerInvalidTest, UninitializedPauseIgnored) {
@@ -105,6 +106,9 @@
     EXPECT_FALSE(worker.start());
     EXPECT_FALSE(worker.hasWorkerCycleCalled());
     EXPECT_TRUE(worker.hasError());
+#if defined(__ANDROID__)
+    EXPECT_GT(worker.getTid(), 0);
+#endif
 }
 
 TEST_P(StreamWorkerInvalidTest, PauseIgnored) {
@@ -136,12 +140,16 @@
 TEST_P(StreamWorkerTest, Uninitialized) {
     EXPECT_FALSE(worker.hasWorkerCycleCalled());
     EXPECT_FALSE(worker.hasError());
+    EXPECT_LE(worker.getTid(), 0);
 }
 
 TEST_P(StreamWorkerTest, Start) {
     ASSERT_TRUE(worker.start());
     EXPECT_TRUE(worker.waitForAtLeastOneCycle());
     EXPECT_FALSE(worker.hasError());
+#if defined(__ANDROID__)
+    EXPECT_GT(worker.getTid(), 0);
+#endif
 }
 
 TEST_P(StreamWorkerTest, StartStop) {
diff --git a/audio/aidl/default/Android.bp b/audio/aidl/default/Android.bp
index 4e583a4..8596466 100644
--- a/audio/aidl/default/Android.bp
+++ b/audio/aidl/default/Android.bp
@@ -82,6 +82,11 @@
         "alsa/ModuleAlsa.cpp",
         "alsa/StreamAlsa.cpp",
         "alsa/Utils.cpp",
+        "bluetooth/DevicePortProxy.cpp",
+        "bluetooth/ModuleBluetooth.cpp",
+        "bluetooth/StreamBluetooth.cpp",
+        "primary/PrimaryMixer.cpp",
+        "primary/StreamPrimary.cpp",
         "r_submix/ModuleRemoteSubmix.cpp",
         "r_submix/RemoteSubmixUtils.cpp",
         "r_submix/SubmixRoute.cpp",
@@ -105,7 +110,9 @@
         "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 +143,9 @@
         "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..0fbf55b 100644
--- a/audio/aidl/default/Configuration.cpp
+++ b/audio/aidl/default/Configuration.cpp
@@ -136,7 +136,7 @@
 // Device ports:
 //  * "Speaker", OUT_SPEAKER, default
 //    - no profiles specified
-//  * "Built-in Mic", IN_MICROPHONE, default
+//  * "Built-In Mic", IN_MICROPHONE, default
 //    - no profiles specified
 //  * "Telephony Tx", OUT_TELEPHONY_TX
 //    - no profiles specified
@@ -148,46 +148,35 @@
 // Mix ports:
 //  * "primary output", PRIMARY, 1 max open, 1 max active stream
 //    - profile PCM 16-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
-//    - profile PCM 24-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
-//  * "compressed offload", DIRECT|COMPRESS_OFFLOAD|NON_BLOCKING, 1 max open, 1 max active stream
-//    - profile MP3; MONO, STEREO; 44100, 48000
-//  * "primary input", 2 max open, 2 max active streams
-//    - profile PCM 16-bit; MONO, STEREO, FRONT_BACK;
-//        8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000
-//    - profile PCM 24-bit; MONO, STEREO, FRONT_BACK;
-//        8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000
+//  * "primary input", 1 max open, 1 max active stream
+//    - profile PCM 16-bit; MONO, STEREO;
+//        8000, 11025, 16000, 32000, 44100, 48000
 //  * "telephony_tx", 1 max open, 1 max active stream
 //    - profile PCM 16-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
-//    - profile PCM 24-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
 //  * "telephony_rx", 1 max open, 1 max active stream
 //    - profile PCM 16-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
-//    - profile PCM 24-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
 //  * "fm_tuner", 1 max open, 1 max active stream
 //    - profile PCM 16-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
-//    - profile PCM 24-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
 //
 // Routes:
-//  "primary out", "compressed offload" -> "Speaker"
-//  "Built-in Mic" -> "primary input"
-//  "telephony_tx" -> "Telephony Tx"
+//  "primary out" -> "Speaker"
+//  "Built-In Mic" -> "primary input"
 //  "Telephony Rx" -> "telephony_rx"
+//  "telephony_tx" -> "Telephony Tx"
 //  "FM Tuner" -> "fm_tuner"
 //
 // Initial port configs:
-//  * "Speaker" device port: PCM 24-bit; STEREO; 48000
-//  * "Built-in Mic" device port: PCM 24-bit; MONO; 48000
-//  * "Telephony Tx" device port: PCM 24-bit; MONO; 48000
-//  * "Telephony Rx" device port: PCM 24-bit; MONO; 48000
-//  * "FM Tuner" device port: PCM 24-bit; STEREO; 48000
+//  * "Speaker" device port: PCM 16-bit; STEREO; 48000
+//  * "Built-In Mic" device port: PCM 16-bit; MONO; 48000
+//  * "Telephony Tx" device port: PCM 16-bit; MONO; 48000
+//  * "Telephony Rx" device port: PCM 16-bit; MONO; 48000
+//  * "FM Tuner" device port: PCM 16-bit; STEREO; 48000
 //
 std::unique_ptr<Configuration> getPrimaryConfiguration() {
     static const Configuration configuration = []() {
         const std::vector<AudioProfile> standardPcmAudioProfiles = {
                 createProfile(PcmType::INT_16_BIT,
                               {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
-                              {8000, 11025, 16000, 32000, 44100, 48000}),
-                createProfile(PcmType::INT_24_BIT,
-                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
                               {8000, 11025, 16000, 32000, 44100, 48000})};
         Configuration c;
 
@@ -199,17 +188,17 @@
                                            1 << AudioPortDeviceExt::FLAG_INDEX_DEFAULT_DEVICE));
         c.ports.push_back(speakerOutDevice);
         c.initialConfigs.push_back(
-                createPortConfig(speakerOutDevice.id, speakerOutDevice.id, PcmType::INT_24_BIT,
+                createPortConfig(speakerOutDevice.id, speakerOutDevice.id, PcmType::INT_16_BIT,
                                  AudioChannelLayout::LAYOUT_STEREO, 48000, 0, false,
                                  createDeviceExt(AudioDeviceType::OUT_SPEAKER, 0)));
 
         AudioPort micInDevice =
-                createPort(c.nextPortId++, "Built-in Mic", 0, true,
+                createPort(c.nextPortId++, "Built-In Mic", 0, true,
                            createDeviceExt(AudioDeviceType::IN_MICROPHONE,
                                            1 << AudioPortDeviceExt::FLAG_INDEX_DEFAULT_DEVICE));
         c.ports.push_back(micInDevice);
         c.initialConfigs.push_back(
-                createPortConfig(micInDevice.id, micInDevice.id, PcmType::INT_24_BIT,
+                createPortConfig(micInDevice.id, micInDevice.id, PcmType::INT_16_BIT,
                                  AudioChannelLayout::LAYOUT_MONO, 48000, 0, true,
                                  createDeviceExt(AudioDeviceType::IN_MICROPHONE, 0)));
 
@@ -219,7 +208,7 @@
         c.ports.push_back(telephonyTxOutDevice);
         c.initialConfigs.push_back(
                 createPortConfig(telephonyTxOutDevice.id, telephonyTxOutDevice.id,
-                                 PcmType::INT_24_BIT, AudioChannelLayout::LAYOUT_MONO, 48000, 0,
+                                 PcmType::INT_16_BIT, AudioChannelLayout::LAYOUT_MONO, 48000, 0,
                                  false, createDeviceExt(AudioDeviceType::OUT_TELEPHONY_TX, 0)));
 
         AudioPort telephonyRxInDevice =
@@ -228,14 +217,14 @@
         c.ports.push_back(telephonyRxInDevice);
         c.initialConfigs.push_back(
                 createPortConfig(telephonyRxInDevice.id, telephonyRxInDevice.id,
-                                 PcmType::INT_24_BIT, AudioChannelLayout::LAYOUT_MONO, 48000, 0,
+                                 PcmType::INT_16_BIT, AudioChannelLayout::LAYOUT_MONO, 48000, 0,
                                  true, createDeviceExt(AudioDeviceType::IN_TELEPHONY_RX, 0)));
 
         AudioPort fmTunerInDevice = createPort(c.nextPortId++, "FM Tuner", 0, true,
                                                createDeviceExt(AudioDeviceType::IN_FM_TUNER, 0));
         c.ports.push_back(fmTunerInDevice);
         c.initialConfigs.push_back(
-                createPortConfig(fmTunerInDevice.id, fmTunerInDevice.id, PcmType::INT_24_BIT,
+                createPortConfig(fmTunerInDevice.id, fmTunerInDevice.id, PcmType::INT_16_BIT,
                                  AudioChannelLayout::LAYOUT_STEREO, 48000, 0, true,
                                  createDeviceExt(AudioDeviceType::IN_FM_TUNER, 0)));
 
@@ -249,30 +238,12 @@
                                       standardPcmAudioProfiles.end());
         c.ports.push_back(primaryOutMix);
 
-        AudioPort compressedOffloadOutMix =
-                createPort(c.nextPortId++, "compressed offload",
-                           makeBitPositionFlagMask({AudioOutputFlags::DIRECT,
-                                                    AudioOutputFlags::COMPRESS_OFFLOAD,
-                                                    AudioOutputFlags::NON_BLOCKING}),
-                           false, createPortMixExt(1, 1));
-        compressedOffloadOutMix.profiles.push_back(
-                createProfile(::android::MEDIA_MIMETYPE_AUDIO_MPEG,
-                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
-                              {44100, 48000}));
-        c.ports.push_back(compressedOffloadOutMix);
-
         AudioPort primaryInMix =
-                createPort(c.nextPortId++, "primary input", 0, true, createPortMixExt(2, 2));
+                createPort(c.nextPortId++, "primary input", 0, true, createPortMixExt(1, 1));
         primaryInMix.profiles.push_back(
                 createProfile(PcmType::INT_16_BIT,
-                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO,
-                               AudioChannelLayout::LAYOUT_FRONT_BACK},
-                              {8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000}));
-        primaryInMix.profiles.push_back(
-                createProfile(PcmType::INT_24_BIT,
-                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO,
-                               AudioChannelLayout::LAYOUT_FRONT_BACK},
-                              {8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000}));
+                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
+                              {8000, 11025, 16000, 32000, 44100, 48000}));
         c.ports.push_back(primaryInMix);
 
         AudioPort telephonyTxOutMix =
@@ -296,10 +267,10 @@
                                      standardPcmAudioProfiles.end());
         c.ports.push_back(fmTunerInMix);
 
-        c.routes.push_back(createRoute({primaryOutMix, compressedOffloadOutMix}, speakerOutDevice));
+        c.routes.push_back(createRoute({primaryOutMix}, speakerOutDevice));
         c.routes.push_back(createRoute({micInDevice}, primaryInMix));
-        c.routes.push_back(createRoute({telephonyTxOutMix}, telephonyTxOutDevice));
         c.routes.push_back(createRoute({telephonyRxInDevice}, telephonyRxInMix));
+        c.routes.push_back(createRoute({telephonyTxOutMix}, telephonyTxOutDevice));
         c.routes.push_back(createRoute({fmTunerInDevice}, fmTunerInMix));
 
         c.portConfigs.insert(c.portConfigs.end(), c.initialConfigs.begin(), c.initialConfigs.end());
@@ -320,15 +291,15 @@
 //
 // Device ports:
 //  * "Remote Submix Out", OUT_SUBMIX
-//    - profile PCM 24-bit; STEREO; 48000
+//    - profile PCM 16-bit; STEREO; 48000
 //  * "Remote Submix In", IN_SUBMIX
-//    - profile PCM 24-bit; STEREO; 48000
+//    - profile PCM 16-bit; STEREO; 48000
 //
 // Mix ports:
-//  * "r_submix output", stream count unlimited
-//    - profile PCM 24-bit; STEREO; 48000
-//  * "r_submix input", stream count unlimited
-//    - profile PCM 24-bit; STEREO; 48000
+//  * "r_submix output", 1 max open, 1 max active stream
+//    - profile PCM 16-bit; STEREO; 48000
+//  * "r_submix input", 1 max open, 1 max active stream
+//    - profile PCM 16-bit; STEREO; 48000
 //
 // Routes:
 //  "r_submix output" -> "Remote Submix Out"
@@ -345,27 +316,27 @@
                            createDeviceExt(AudioDeviceType::OUT_SUBMIX, 0,
                                            AudioDeviceDescription::CONNECTION_VIRTUAL));
         rsubmixOutDevice.profiles.push_back(
-                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
+                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
         c.ports.push_back(rsubmixOutDevice);
 
         AudioPort rsubmixInDevice = createPort(c.nextPortId++, "Remote Submix In", 0, true,
                                                createDeviceExt(AudioDeviceType::IN_SUBMIX, 0));
         rsubmixInDevice.profiles.push_back(
-                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
+                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
         c.ports.push_back(rsubmixInDevice);
 
         // Mix ports
 
         AudioPort rsubmixOutMix =
-                createPort(c.nextPortId++, "r_submix output", 0, false, createPortMixExt(0, 0));
+                createPort(c.nextPortId++, "r_submix output", 0, false, createPortMixExt(1, 1));
         rsubmixOutMix.profiles.push_back(
-                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
+                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
         c.ports.push_back(rsubmixOutMix);
 
         AudioPort rsubmixInMix =
-                createPort(c.nextPortId++, "r_submix input", 0, true, createPortMixExt(0, 0));
+                createPort(c.nextPortId++, "r_submix input", 0, true, createPortMixExt(1, 1));
         rsubmixInMix.profiles.push_back(
-                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
+                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
         c.ports.push_back(rsubmixInMix);
 
         c.routes.push_back(createRoute({rsubmixOutMix}, rsubmixOutDevice));
@@ -479,14 +450,17 @@
 // Mix ports:
 //  * "test output", 1 max open, 1 max active stream
 //    - profile PCM 24-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
-//  * "compressed offload", DIRECT|COMPRESS_OFFLOAD|NON_BLOCKING, 1 max open, 1 max active stream
+//  * "test fast output", 1 max open, 1 max active stream
+//    - profile PCM 24-bit; STEREO; 44100, 48000
+//  * "test compressed offload", DIRECT|COMPRESS_OFFLOAD|NON_BLOCKING, 1 max open, 1 max active
+//  stream
 //    - profile MP3; MONO, STEREO; 44100, 48000
 //  * "test input", 2 max open, 2 max active streams
 //    - profile PCM 24-bit; MONO, STEREO, FRONT_BACK;
-//        8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000
+//        8000, 11025, 16000, 22050, 32000, 44100, 48000
 //
 // Routes:
-//  "test output", "compressed offload" -> "Test Out"
+//  "test output", "test fast output", "test compressed offload" -> "Test Out"
 //  "Test In" -> "test input"
 //
 // Initial port configs:
@@ -525,8 +499,15 @@
                               {8000, 11025, 16000, 32000, 44100, 48000}));
         c.ports.push_back(testOutMix);
 
+        AudioPort testFastOutMix = createPort(c.nextPortId++, "test fast output",
+                                              makeBitPositionFlagMask({AudioOutputFlags::FAST}),
+                                              false, createPortMixExt(1, 1));
+        testFastOutMix.profiles.push_back(createProfile(
+                PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {44100, 48000}));
+        c.ports.push_back(testFastOutMix);
+
         AudioPort compressedOffloadOutMix =
-                createPort(c.nextPortId++, "compressed offload",
+                createPort(c.nextPortId++, "test compressed offload",
                            makeBitPositionFlagMask({AudioOutputFlags::DIRECT,
                                                     AudioOutputFlags::COMPRESS_OFFLOAD,
                                                     AudioOutputFlags::NON_BLOCKING}),
@@ -543,15 +524,16 @@
                 createProfile(PcmType::INT_16_BIT,
                               {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO,
                                AudioChannelLayout::LAYOUT_FRONT_BACK},
-                              {8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000}));
+                              {8000, 11025, 16000, 22050, 32000, 44100, 48000}));
         testInMIx.profiles.push_back(
                 createProfile(PcmType::INT_24_BIT,
                               {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO,
                                AudioChannelLayout::LAYOUT_FRONT_BACK},
-                              {8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000}));
+                              {8000, 11025, 16000, 22050, 32000, 44100, 48000}));
         c.ports.push_back(testInMIx);
 
-        c.routes.push_back(createRoute({testOutMix, compressedOffloadOutMix}, testOutDevice));
+        c.routes.push_back(
+                createRoute({testOutMix, testFastOutMix, compressedOffloadOutMix}, testOutDevice));
         c.routes.push_back(createRoute({testInDevice}, testInMIx));
 
         c.portConfigs.insert(c.portConfigs.end(), c.initialConfigs.begin(), c.initialConfigs.end());
@@ -561,4 +543,94 @@
     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_HEADPHONE, 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));
+        btOutDevice.profiles.insert(btOutDevice.profiles.begin(), standardPcmAudioProfiles.begin(),
+                                    standardPcmAudioProfiles.end());
+        c.ports.push_back(btOutDevice);
+        c.connectedProfiles[btOutDevice.id] = standardPcmAudioProfiles;
+
+        AudioPort btOutHeadphone =
+                createPort(c.nextPortId++, "BT A2DP Headphones", 0, false,
+                           createDeviceExt(AudioDeviceType::OUT_HEADPHONE, 0,
+                                           AudioDeviceDescription::CONNECTION_BT_A2DP));
+        btOutHeadphone.profiles.insert(btOutHeadphone.profiles.begin(),
+                                       standardPcmAudioProfiles.begin(),
+                                       standardPcmAudioProfiles.end());
+        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));
+        btOutSpeaker.profiles.insert(btOutSpeaker.profiles.begin(),
+                                     standardPcmAudioProfiles.begin(),
+                                     standardPcmAudioProfiles.end());
+        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 btOutMix =
+                createPort(c.nextPortId++, "a2dp output", 0, false, createPortMixExt(1, 1));
+        c.ports.push_back(btOutMix);
+
+        AudioPort btHearingOutMix =
+                createPort(c.nextPortId++, "hearing aid output", 0, false, createPortMixExt(1, 1));
+        btHearingOutMix.profiles.push_back(createProfile(
+                PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {16000, 24000}));
+        c.ports.push_back(btHearingOutMix);
+
+        c.routes.push_back(createRoute({btOutMix}, btOutDevice));
+        c.routes.push_back(createRoute({btOutMix}, btOutHeadphone));
+        c.routes.push_back(createRoute({btOutMix}, btOutSpeaker));
+        c.routes.push_back(createRoute({btHearingOutMix}, 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/ModulePrimary.cpp b/audio/aidl/default/ModulePrimary.cpp
index 29e8126..9919c7f 100644
--- a/audio/aidl/default/ModulePrimary.cpp
+++ b/audio/aidl/default/ModulePrimary.cpp
@@ -21,7 +21,7 @@
 #include <android-base/logging.h>
 
 #include "core-impl/ModulePrimary.h"
-#include "core-impl/StreamStub.h"
+#include "core-impl/StreamPrimary.h"
 #include "core-impl/Telephony.h"
 
 using aidl::android::hardware::audio::common::SinkMetadata;
@@ -47,15 +47,15 @@
                                                     const SinkMetadata& sinkMetadata,
                                                     const std::vector<MicrophoneInfo>& microphones,
                                                     std::shared_ptr<StreamIn>* result) {
-    return createStreamInstance<StreamInStub>(result, std::move(context), sinkMetadata,
-                                              microphones);
+    return createStreamInstance<StreamInPrimary>(result, std::move(context), sinkMetadata,
+                                                 microphones);
 }
 
 ndk::ScopedAStatus ModulePrimary::createOutputStream(
         StreamContext&& context, const SourceMetadata& sourceMetadata,
         const std::optional<AudioOffloadInfo>& offloadInfo, std::shared_ptr<StreamOut>* result) {
-    return createStreamInstance<StreamOutStub>(result, std::move(context), sourceMetadata,
-                                               offloadInfo);
+    return createStreamInstance<StreamOutPrimary>(result, std::move(context), sourceMetadata,
+                                                  offloadInfo);
 }
 
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/Stream.cpp b/audio/aidl/default/Stream.cpp
index d2be48c..af89f5f 100644
--- a/audio/aidl/default/Stream.cpp
+++ b/audio/aidl/default/Stream.cpp
@@ -27,12 +27,16 @@
 using aidl::android::hardware::audio::common::AudioOffloadMetadata;
 using aidl::android::hardware::audio::common::getChannelCount;
 using aidl::android::hardware::audio::common::getFrameSizeInBytes;
+using aidl::android::hardware::audio::common::isBitPositionFlagSet;
 using aidl::android::hardware::audio::common::SinkMetadata;
 using aidl::android::hardware::audio::common::SourceMetadata;
 using aidl::android::media::audio::common::AudioDevice;
 using aidl::android::media::audio::common::AudioDualMonoMode;
+using aidl::android::media::audio::common::AudioInputFlags;
+using aidl::android::media::audio::common::AudioIoFlags;
 using aidl::android::media::audio::common::AudioLatencyMode;
 using aidl::android::media::audio::common::AudioOffloadInfo;
+using aidl::android::media::audio::common::AudioOutputFlags;
 using aidl::android::media::audio::common::AudioPlaybackRate;
 using aidl::android::media::audio::common::MicrophoneDynamicInfo;
 using aidl::android::media::audio::common::MicrophoneInfo;
@@ -117,7 +121,7 @@
     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;
         }
     }
@@ -238,8 +242,8 @@
             break;
         case Tag::standby:
             if (mState == StreamDescriptor::State::IDLE) {
+                populateReply(&reply, mIsConnected);
                 if (::android::status_t status = mDriver->standby(); status == ::android::OK) {
-                    populateReply(&reply, mIsConnected);
                     mState = StreamDescriptor::State::STANDBY;
                 } else {
                     LOG(ERROR) << __func__ << ": standby failed: " << status;
@@ -492,8 +496,8 @@
             break;
         case Tag::standby:
             if (mState == StreamDescriptor::State::IDLE) {
+                populateReply(&reply, mIsConnected);
                 if (::android::status_t status = mDriver->standby(); status == ::android::OK) {
-                    populateReply(&reply, mIsConnected);
                     mState = StreamDescriptor::State::STANDBY;
                 } else {
                     LOG(ERROR) << __func__ << ": standby failed: " << status;
@@ -610,8 +614,30 @@
 ndk::ScopedAStatus StreamCommonImpl::initInstance(
         const std::shared_ptr<StreamCommonInterface>& delegate) {
     mCommon = ndk::SharedRefBase::make<StreamCommonDelegator>(delegate);
-    return mWorker->start() ? ndk::ScopedAStatus::ok()
-                            : ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
+    if (!mWorker->start()) {
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
+    }
+    if (auto flags = getContext().getFlags();
+        (flags.getTag() == AudioIoFlags::Tag::input &&
+         isBitPositionFlagSet(flags.template get<AudioIoFlags::Tag::input>(),
+                              AudioInputFlags::FAST)) ||
+        (flags.getTag() == AudioIoFlags::Tag::output &&
+         isBitPositionFlagSet(flags.template get<AudioIoFlags::Tag::output>(),
+                              AudioOutputFlags::FAST))) {
+        // FAST workers should be run with a SCHED_FIFO scheduler, however the host process
+        // might be lacking the capability to request it, thus a failure to set is not an error.
+        pid_t workerTid = mWorker->getTid();
+        if (workerTid > 0) {
+            struct sched_param param;
+            param.sched_priority = 3;  // Must match SchedulingPolicyService.PRIORITY_MAX (Java).
+            if (sched_setscheduler(workerTid, SCHED_FIFO | SCHED_RESET_ON_FORK, &param) != 0) {
+                PLOG(WARNING) << __func__ << ": failed to set FIFO scheduler for a fast thread";
+            }
+        } else {
+            LOG(WARNING) << __func__ << ": invalid worker tid: " << workerTid;
+        }
+    }
+    return ndk::ScopedAStatus::ok();
 }
 
 ndk::ScopedAStatus StreamCommonImpl::getStreamCommonCommon(
@@ -723,6 +749,11 @@
     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 +765,12 @@
 }  // 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(
@@ -794,13 +825,39 @@
     return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
 }
 
+StreamInHwGainHelper::StreamInHwGainHelper(const StreamContext* context)
+    : mChannelCount(getChannelCount(context->getChannelLayout())) {}
+
+ndk::ScopedAStatus StreamInHwGainHelper::getHwGainImpl(std::vector<float>* _aidl_return) {
+    *_aidl_return = mHwGains;
+    LOG(DEBUG) << __func__ << ": returning " << ::android::internal::ToString(*_aidl_return);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus StreamInHwGainHelper::setHwGainImpl(const std::vector<float>& in_channelGains) {
+    LOG(DEBUG) << __func__ << ": gains " << ::android::internal::ToString(in_channelGains);
+    if (in_channelGains.size() != mChannelCount) {
+        LOG(ERROR) << __func__
+                   << ": channel count does not match stream channel count: " << mChannelCount;
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
+    for (float gain : in_channelGains) {
+        if (gain < StreamIn::HW_GAIN_MIN || gain > StreamIn::HW_GAIN_MAX) {
+            LOG(ERROR) << __func__ << ": gain value out of range: " << gain;
+            return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+        }
+    }
+    mHwGains = in_channelGains;
+    return ndk::ScopedAStatus::ok();
+}
+
 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(
@@ -899,4 +956,31 @@
     return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
 }
 
+StreamOutHwVolumeHelper::StreamOutHwVolumeHelper(const StreamContext* context)
+    : mChannelCount(getChannelCount(context->getChannelLayout())) {}
+
+ndk::ScopedAStatus StreamOutHwVolumeHelper::getHwVolumeImpl(std::vector<float>* _aidl_return) {
+    *_aidl_return = mHwVolumes;
+    LOG(DEBUG) << __func__ << ": returning " << ::android::internal::ToString(*_aidl_return);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus StreamOutHwVolumeHelper::setHwVolumeImpl(
+        const std::vector<float>& in_channelVolumes) {
+    LOG(DEBUG) << __func__ << ": volumes " << ::android::internal::ToString(in_channelVolumes);
+    if (in_channelVolumes.size() != mChannelCount) {
+        LOG(ERROR) << __func__
+                   << ": channel count does not match stream channel count: " << mChannelCount;
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
+    for (float volume : in_channelVolumes) {
+        if (volume < StreamOut::HW_VOLUME_MIN || volume > StreamOut::HW_VOLUME_MAX) {
+            LOG(ERROR) << __func__ << ": volume value out of range: " << volume;
+            return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+        }
+    }
+    mHwVolumes = in_channelVolumes;
+    return ndk::ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/StreamSwitcher.cpp b/audio/aidl/default/StreamSwitcher.cpp
index 956f413..8ba15a8 100644
--- a/audio/aidl/default/StreamSwitcher.cpp
+++ b/audio/aidl/default/StreamSwitcher.cpp
@@ -31,7 +31,9 @@
 namespace aidl::android::hardware::audio::core {
 
 StreamSwitcher::StreamSwitcher(StreamContext* context, const Metadata& metadata)
-    : mMetadata(metadata), mStream(new InnerStreamWrapper<StreamStub>(context, mMetadata)) {}
+    : mContext(context),
+      mMetadata(metadata),
+      mStream(new InnerStreamWrapper<StreamStub>(context, mMetadata)) {}
 
 ndk::ScopedAStatus StreamSwitcher::closeCurrentStream(bool validateStreamState) {
     if (!mStream) return ndk::ScopedAStatus::ok();
@@ -100,6 +102,10 @@
 }
 
 ndk::ScopedAStatus StreamSwitcher::addEffect(const std::shared_ptr<IEffect>& in_effect) {
+    if (in_effect == nullptr) {
+        LOG(DEBUG) << __func__ << ": null effect";
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
     if (mStream == nullptr) {
         LOG(ERROR) << __func__ << ": stream was closed";
         return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
@@ -112,15 +118,18 @@
 }
 
 ndk::ScopedAStatus StreamSwitcher::removeEffect(const std::shared_ptr<IEffect>& in_effect) {
+    if (in_effect == nullptr) {
+        LOG(DEBUG) << __func__ << ": null effect";
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
     if (mStream == nullptr) {
         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();
@@ -191,6 +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*/));
@@ -223,8 +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..0605d6f 100644
--- a/audio/aidl/default/alsa/StreamAlsa.cpp
+++ b/audio/aidl/default/alsa/StreamAlsa.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <cmath>
 #include <limits>
 
 #define LOG_TAG "AHAL_StreamAlsa"
@@ -29,7 +30,9 @@
 
 StreamAlsa::StreamAlsa(StreamContext* context, const Metadata& metadata, int readWriteRetries)
     : StreamCommonImpl(context, metadata),
+      mBufferSizeFrames(getContext().getBufferSizeInFrames()),
       mFrameSizeBytes(getContext().getFrameSize()),
+      mSampleRate(getContext().getSampleRate()),
       mIsInput(isInput(metadata)),
       mConfig(alsa::getPcmConfig(getContext(), mIsInput)),
       mReadWriteRetries(readWriteRetries) {}
@@ -39,17 +42,20 @@
 }
 
 ::android::status_t StreamAlsa::drain(StreamDescriptor::DrainMode) {
-    usleep(1000);
+    if (!mIsInput) {
+        static constexpr float kMicrosPerSecond = MICROS_PER_SECOND;
+        const size_t delayUs = static_cast<size_t>(
+                std::roundf(mBufferSizeFrames * kMicrosPerSecond / mSampleRate));
+        usleep(delayUs);
+    }
     return ::android::OK;
 }
 
 ::android::status_t StreamAlsa::flush() {
-    usleep(1000);
     return ::android::OK;
 }
 
 ::android::status_t StreamAlsa::pause() {
-    usleep(1000);
     return ::android::OK;
 }
 
@@ -59,6 +65,10 @@
 }
 
 ::android::status_t StreamAlsa::start() {
+    if (!mAlsaDeviceProxies.empty()) {
+        // This is a resume after a pause.
+        return ::android::OK;
+    }
     decltype(mAlsaDeviceProxies) alsaDeviceProxies;
     for (const auto& device : getDeviceProfiles()) {
         alsa::DeviceProxy proxy;
@@ -71,8 +81,7 @@
                     true /*require_exact_match*/);
         } else {
             proxy = alsa::openProxyForAttachedDevice(
-                    device, const_cast<struct pcm_config*>(&mConfig.value()),
-                    getContext().getBufferSizeInFrames());
+                    device, const_cast<struct pcm_config*>(&mConfig.value()), mBufferSizeFrames);
         }
         if (!proxy) {
             return ::android::NO_INIT;
@@ -85,13 +94,13 @@
 
 ::android::status_t StreamAlsa::transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
                                          int32_t* latencyMs) {
+    if (mAlsaDeviceProxies.empty()) {
+        LOG(FATAL) << __func__ << ": no opened devices";
+        return ::android::NO_INIT;
+    }
     const size_t bytesToTransfer = frameCount * mFrameSizeBytes;
     unsigned maxLatency = 0;
     if (mIsInput) {
-        if (mAlsaDeviceProxies.empty()) {
-            LOG(FATAL) << __func__ << ": no input devices";
-            return ::android::NO_INIT;
-        }
         // For input case, only support single device.
         proxy_read_with_retries(mAlsaDeviceProxies[0].get(), buffer, bytesToTransfer,
                                 mReadWriteRetries);
@@ -108,11 +117,14 @@
     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";
+        LOG(FATAL) << __func__ << ": no opened devices";
         return ::android::NO_INIT;
     }
+    // Since the proxy can only count transferred frames since its creation,
+    // we override its counter value with ours and let it to correct for buffered frames.
+    alsa::resetTransferredFrames(mAlsaDeviceProxies[0], position->frames);
     if (mIsInput) {
         if (int ret = proxy_get_capture_position(mAlsaDeviceProxies[0].get(), &position->frames,
                                                  &position->timeNs);
diff --git a/audio/aidl/default/alsa/Utils.cpp b/audio/aidl/default/alsa/Utils.cpp
index 20f7797..9dcd024 100644
--- a/audio/aidl/default/alsa/Utils.cpp
+++ b/audio/aidl/default/alsa/Utils.cpp
@@ -262,12 +262,14 @@
 }
 
 DeviceProxy makeDeviceProxy() {
-    return DeviceProxy(new alsa_device_proxy, [](alsa_device_proxy* proxy) {
+    DeviceProxy proxy(new alsa_device_proxy, [](alsa_device_proxy* proxy) {
         if (proxy != nullptr) {
             proxy_close(proxy);
             delete proxy;
         }
     });
+    memset(proxy.get(), 0, sizeof(alsa_device_proxy));
+    return proxy;
 }
 
 DeviceProxy openProxyForAttachedDevice(const DeviceProfile& deviceProfile,
@@ -334,6 +336,12 @@
     return profile;
 }
 
+void resetTransferredFrames(DeviceProxy& proxy, uint64_t frames) {
+    if (proxy != nullptr) {
+        proxy->transferred = frames;
+    }
+}
+
 AudioFormatDescription c2aidl_pcm_format_AudioFormatDescription(enum pcm_format legacy) {
     return findValueOrDefault(getPcmFormatToAudioFormatDescMap(), legacy, AudioFormatDescription());
 }
diff --git a/audio/aidl/default/alsa/Utils.h b/audio/aidl/default/alsa/Utils.h
index 615e657..37414b3 100644
--- a/audio/aidl/default/alsa/Utils.h
+++ b/audio/aidl/default/alsa/Utils.h
@@ -66,6 +66,7 @@
 DeviceProxy openProxyForExternalDevice(const DeviceProfile& deviceProfile,
                                        struct pcm_config* pcmConfig, bool requireExactMatch);
 std::optional<alsa_device_profile> readAlsaDeviceInfo(const DeviceProfile& deviceProfile);
+void resetTransferredFrames(DeviceProxy& proxy, uint64_t frames);
 
 ::aidl::android::media::audio::common::AudioFormatDescription
 c2aidl_pcm_format_AudioFormatDescription(enum pcm_format legacy);
diff --git a/audio/aidl/default/android.hardware.audio.service-aidl.example.rc b/audio/aidl/default/android.hardware.audio.service-aidl.example.rc
index 2068735..757976f 100644
--- a/audio/aidl/default/android.hardware.audio.service-aidl.example.rc
+++ b/audio/aidl/default/android.hardware.audio.service-aidl.example.rc
@@ -3,7 +3,7 @@
     user audioserver
     # media gid needed for /dev/fm (radio) and for /data/misc/media (tee)
     group audio camera drmrpc inet media mediadrm net_bt net_bt_admin net_bw_acct wakelock context_hub
-    capabilities BLOCK_SUSPEND
+    capabilities BLOCK_SUSPEND SYS_NICE
     # setting RLIMIT_RTPRIO allows binder RT priority inheritance
     rlimit rtprio 10 10
     ioprio rt 4
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..a02655f 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.
@@ -262,6 +262,7 @@
     virtual void setIsConnected(bool isConnected) = 0;
     virtual StreamDescriptor::State setClosed() = 0;
     virtual bool start() = 0;
+    virtual pid_t getTid() = 0;
     virtual void stop() = 0;
 };
 
@@ -277,8 +278,10 @@
     void setIsConnected(bool isConnected) override { WorkerImpl::setIsConnected(isConnected); }
     StreamDescriptor::State setClosed() override { return WorkerImpl::setClosed(); }
     bool start() override {
-        return WorkerImpl::start(WorkerImpl::kThreadName, ANDROID_PRIORITY_AUDIO);
+        // This is an "audio service thread," must have elevated priority.
+        return WorkerImpl::start(WorkerImpl::kThreadName, ANDROID_PRIORITY_URGENT_AUDIO);
     }
+    pid_t getTid() override { return WorkerImpl::getTid(); }
     void stop() override { return WorkerImpl::stop(); }
 };
 
@@ -354,6 +357,7 @@
     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 +458,7 @@
     ndk::ScopedAStatus setConnectedDevices(
             const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices)
             override;
+    ndk::ScopedAStatus bluetoothParametersUpdated() override;
 
   protected:
     static StreamWorkerInterface::CreateInstance getDefaultInWorkerCreator() {
@@ -505,10 +510,21 @@
     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;
 };
 
+class StreamInHwGainHelper {
+  protected:
+    explicit StreamInHwGainHelper(const StreamContext* context);
+
+    ndk::ScopedAStatus getHwGainImpl(std::vector<float>* _aidl_return);
+    ndk::ScopedAStatus setHwGainImpl(const std::vector<float>& in_channelGains);
+
+    const size_t mChannelCount;
+    std::vector<float> mHwGains;
+};
+
 class StreamOut : virtual public StreamCommonInterface, public BnStreamOut {
   protected:
     void defaultOnClose();
@@ -550,11 +566,22 @@
               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;
 };
 
+class StreamOutHwVolumeHelper {
+  protected:
+    explicit StreamOutHwVolumeHelper(const StreamContext* context);
+
+    ndk::ScopedAStatus getHwVolumeImpl(std::vector<float>* _aidl_return);
+    ndk::ScopedAStatus setHwVolumeImpl(const std::vector<float>& in_channelVolumes);
+
+    const size_t mChannelCount;
+    std::vector<float> mHwVolumes;
+};
+
 // The recommended way to create a stream instance.
 // 'StreamImpl' is the concrete stream implementation, 'StreamInOrOut' is either 'StreamIn' or
 // 'StreamOut', the rest are the arguments forwarded to the constructor of 'StreamImpl'.
@@ -584,6 +611,11 @@
         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 +644,14 @@
         }
         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..2c3b284 100644
--- a/audio/aidl/default/include/core-impl/StreamAlsa.h
+++ b/audio/aidl/default/include/core-impl/StreamAlsa.h
@@ -41,14 +41,16 @@
     ::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:
     // Called from 'start' to initialize 'mAlsaDeviceProxies', the vector must be non-empty.
     virtual std::vector<alsa::DeviceProfile> getDeviceProfiles() = 0;
 
+    const size_t mBufferSizeFrames;
     const size_t mFrameSizeBytes;
+    const int mSampleRate;
     const bool mIsInput;
     const std::optional<struct pcm_config> mConfig;
     const int mReadWriteRetries;
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/StreamPrimary.h b/audio/aidl/default/include/core-impl/StreamPrimary.h
new file mode 100644
index 0000000..b3ddd0b
--- /dev/null
+++ b/audio/aidl/default/include/core-impl/StreamPrimary.h
@@ -0,0 +1,84 @@
+/*
+ * 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 <vector>
+
+#include "StreamAlsa.h"
+#include "StreamSwitcher.h"
+
+namespace aidl::android::hardware::audio::core {
+
+class StreamPrimary : public StreamAlsa {
+  public:
+    StreamPrimary(StreamContext* context, const Metadata& metadata);
+
+  protected:
+    std::vector<alsa::DeviceProfile> getDeviceProfiles() override;
+
+    const bool mIsInput;
+};
+
+class StreamInPrimary final : public StreamIn, public StreamSwitcher, public StreamInHwGainHelper {
+  public:
+    friend class ndk::SharedRefBase;
+    StreamInPrimary(
+            StreamContext&& context,
+            const ::aidl::android::hardware::audio::common::SinkMetadata& sinkMetadata,
+            const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones);
+
+  private:
+    static bool useStubStream(const ::aidl::android::media::audio::common::AudioDevice& device);
+
+    DeviceSwitchBehavior switchCurrentStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices)
+            override;
+    std::unique_ptr<StreamCommonInterfaceEx> createNewStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+            StreamContext* context, const Metadata& metadata) override;
+    void onClose(StreamDescriptor::State) override { defaultOnClose(); }
+
+    ndk::ScopedAStatus getHwGain(std::vector<float>* _aidl_return) override;
+    ndk::ScopedAStatus setHwGain(const std::vector<float>& in_channelGains) override;
+};
+
+class StreamOutPrimary final : public StreamOut,
+                               public StreamSwitcher,
+                               public StreamOutHwVolumeHelper {
+  public:
+    friend class ndk::SharedRefBase;
+    StreamOutPrimary(StreamContext&& context,
+                     const ::aidl::android::hardware::audio::common::SourceMetadata& sourceMetadata,
+                     const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo>&
+                             offloadInfo);
+
+  private:
+    static bool useStubStream(const ::aidl::android::media::audio::common::AudioDevice& device);
+
+    DeviceSwitchBehavior switchCurrentStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices)
+            override;
+    std::unique_ptr<StreamCommonInterfaceEx> createNewStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+            StreamContext* context, const Metadata& metadata) override;
+    void onClose(StreamDescriptor::State) override { defaultOnClose(); }
+
+    ndk::ScopedAStatus getHwVolume(std::vector<float>* _aidl_return) override;
+    ndk::ScopedAStatus setHwVolume(const std::vector<float>& in_channelVolumes) override;
+};
+
+}  // 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 b39583e..94404a1 100644
--- a/audio/aidl/default/include/core-impl/StreamRemoteSubmix.h
+++ b/audio/aidl/default/include/core-impl/StreamRemoteSubmix.h
@@ -20,16 +20,16 @@
 #include <vector>
 
 #include "core-impl/Stream.h"
+#include "core-impl/StreamSwitcher.h"
 #include "r_submix/SubmixRoute.h"
 
 namespace aidl::android::hardware::audio::core {
 
-using aidl::android::hardware::audio::core::r_submix::AudioConfig;
-using aidl::android::hardware::audio::core::r_submix::SubmixRoute;
-
 class StreamRemoteSubmix : public StreamCommonImpl {
   public:
-    StreamRemoteSubmix(StreamContext* context, const Metadata& metadata);
+    StreamRemoteSubmix(
+            StreamContext* context, const Metadata& metadata,
+            const ::aidl::android::media::audio::common::AudioDeviceAddress& deviceAddress);
 
     ::android::status_t init() override;
     ::android::status_t drain(StreamDescriptor::DrainMode) override;
@@ -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.
@@ -51,16 +51,17 @@
     ::android::status_t outWrite(void* buffer, size_t frameCount, size_t* actualFrameCount);
     ::android::status_t inRead(void* buffer, size_t frameCount, size_t* actualFrameCount);
 
-    const int mPortId;
+    const ::aidl::android::media::audio::common::AudioDeviceAddress mDeviceAddress;
     const bool mIsInput;
-    AudioConfig mStreamConfig;
-    std::shared_ptr<SubmixRoute> mCurrentRoute = nullptr;
+    r_submix::AudioConfig mStreamConfig;
+    std::shared_ptr<r_submix::SubmixRoute> mCurrentRoute = nullptr;
 
     // Mutex lock to protect vector of submix routes, each of these submix routes have their mutex
     // locks and none of the mutex locks should be taken together.
     static std::mutex sSubmixRoutesLock;
-    static std::map<int32_t, std::shared_ptr<SubmixRoute>> sSubmixRoutes
-            GUARDED_BY(sSubmixRoutesLock);
+    static std::map<::aidl::android::media::audio::common::AudioDeviceAddress,
+                    std::shared_ptr<r_submix::SubmixRoute>>
+            sSubmixRoutes GUARDED_BY(sSubmixRoutesLock);
 
     // limit for number of read error log entries to avoid spamming the logs
     static constexpr int kMaxReadErrorLogs = 5;
@@ -72,7 +73,7 @@
     static constexpr int kReadAttemptSleepUs = 5000;
 };
 
-class StreamInRemoteSubmix final : public StreamIn, public StreamRemoteSubmix {
+class StreamInRemoteSubmix final : public StreamIn, public StreamSwitcher {
   public:
     friend class ndk::SharedRefBase;
     StreamInRemoteSubmix(
@@ -81,13 +82,19 @@
             const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones);
 
   private:
+    DeviceSwitchBehavior switchCurrentStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices)
+            override;
+    std::unique_ptr<StreamCommonInterfaceEx> createNewStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+            StreamContext* context, const Metadata& metadata) override;
     void onClose(StreamDescriptor::State) override { defaultOnClose(); }
     ndk::ScopedAStatus getActiveMicrophones(
             std::vector<::aidl::android::media::audio::common::MicrophoneDynamicInfo>* _aidl_return)
             override;
 };
 
-class StreamOutRemoteSubmix final : public StreamOut, public StreamRemoteSubmix {
+class StreamOutRemoteSubmix final : public StreamOut, public StreamSwitcher {
   public:
     friend class ndk::SharedRefBase;
     StreamOutRemoteSubmix(
@@ -97,6 +104,12 @@
                     offloadInfo);
 
   private:
+    DeviceSwitchBehavior switchCurrentStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices)
+            override;
+    std::unique_ptr<StreamCommonInterfaceEx> createNewStream(
+            const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+            StreamContext* context, const Metadata& metadata) override;
     void onClose(StreamDescriptor::State) override { defaultOnClose(); }
 };
 
diff --git a/audio/aidl/default/include/core-impl/StreamStub.h b/audio/aidl/default/include/core-impl/StreamStub.h
index a8a3fc4..3857e0e 100644
--- a/audio/aidl/default/include/core-impl/StreamStub.h
+++ b/audio/aidl/default/include/core-impl/StreamStub.h
@@ -35,6 +35,7 @@
     void shutdown() override;
 
   private:
+    const size_t mBufferSizeFrames;
     const size_t mFrameSizeBytes;
     const int mSampleRate;
     const bool mIsAsynchronous;
diff --git a/audio/aidl/default/include/core-impl/StreamSwitcher.h b/audio/aidl/default/include/core-impl/StreamSwitcher.h
index e462481..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
@@ -86,7 +86,8 @@
 template <typename T>
 class InnerStreamWrapper : public T, public StreamCommonInterfaceEx {
   public:
-    InnerStreamWrapper(StreamContext* context, const Metadata& metadata) : T(context, metadata) {}
+    template <typename... Args>
+    InnerStreamWrapper(Args&&... args) : T(std::forward<Args>(args)...) {}
     StreamDescriptor::State getStatePriorToClosing() const override { return mStatePriorToClosing; }
 
   private:
@@ -128,6 +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
@@ -186,6 +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/include/core-impl/StreamUsb.h b/audio/aidl/default/include/core-impl/StreamUsb.h
index 74e30ff..608f27d 100644
--- a/audio/aidl/default/include/core-impl/StreamUsb.h
+++ b/audio/aidl/default/include/core-impl/StreamUsb.h
@@ -59,7 +59,7 @@
             override;
 };
 
-class StreamOutUsb final : public StreamOut, public StreamUsb {
+class StreamOutUsb final : public StreamOut, public StreamUsb, public StreamOutHwVolumeHelper {
   public:
     friend class ndk::SharedRefBase;
     StreamOutUsb(StreamContext&& context,
@@ -71,9 +71,6 @@
     void onClose(StreamDescriptor::State) override { defaultOnClose(); }
     ndk::ScopedAStatus getHwVolume(std::vector<float>* _aidl_return) override;
     ndk::ScopedAStatus setHwVolume(const std::vector<float>& in_channelVolumes) override;
-
-    const int mChannelCount;
-    std::vector<float> mHwVolumes;
 };
 
 }  // 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/primary/PrimaryMixer.cpp b/audio/aidl/default/primary/PrimaryMixer.cpp
new file mode 100644
index 0000000..577d010
--- /dev/null
+++ b/audio/aidl/default/primary/PrimaryMixer.cpp
@@ -0,0 +1,29 @@
+/*
+ * 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_PrimaryMixer"
+
+#include "PrimaryMixer.h"
+
+namespace aidl::android::hardware::audio::core::primary {
+
+// static
+PrimaryMixer& PrimaryMixer::getInstance() {
+    static PrimaryMixer gInstance;
+    return gInstance;
+}
+
+}  // namespace aidl::android::hardware::audio::core::primary
diff --git a/audio/aidl/default/primary/PrimaryMixer.h b/audio/aidl/default/primary/PrimaryMixer.h
new file mode 100644
index 0000000..3806428
--- /dev/null
+++ b/audio/aidl/default/primary/PrimaryMixer.h
@@ -0,0 +1,42 @@
+/*
+ * 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 <map>
+#include <memory>
+#include <mutex>
+#include <vector>
+
+#include <android-base/thread_annotations.h>
+#include <android/binder_auto_utils.h>
+
+#include "alsa/Mixer.h"
+
+namespace aidl::android::hardware::audio::core::primary {
+
+class PrimaryMixer : public alsa::Mixer {
+  public:
+    static constexpr int kAlsaCard = 0;
+    static constexpr int kAlsaDevice = 0;
+
+    static PrimaryMixer& getInstance();
+
+  private:
+    PrimaryMixer() : alsa::Mixer(kAlsaCard) {}
+};
+
+}  // namespace aidl::android::hardware::audio::core::primary
diff --git a/audio/aidl/default/primary/StreamPrimary.cpp b/audio/aidl/default/primary/StreamPrimary.cpp
new file mode 100644
index 0000000..e01be8a
--- /dev/null
+++ b/audio/aidl/default/primary/StreamPrimary.cpp
@@ -0,0 +1,186 @@
+/*
+ * 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.
+ */
+
+#include <limits>
+
+#define LOG_TAG "AHAL_StreamPrimary"
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <error/expected_utils.h>
+
+#include "PrimaryMixer.h"
+#include "core-impl/StreamPrimary.h"
+#include "core-impl/StreamStub.h"
+
+using aidl::android::hardware::audio::common::SinkMetadata;
+using aidl::android::hardware::audio::common::SourceMetadata;
+using aidl::android::media::audio::common::AudioDevice;
+using aidl::android::media::audio::common::AudioDeviceDescription;
+using aidl::android::media::audio::common::AudioDeviceType;
+using aidl::android::media::audio::common::AudioOffloadInfo;
+using aidl::android::media::audio::common::MicrophoneInfo;
+using android::base::GetBoolProperty;
+
+namespace aidl::android::hardware::audio::core {
+
+StreamPrimary::StreamPrimary(StreamContext* context, const Metadata& metadata)
+    : StreamAlsa(context, metadata, 3 /*readWriteRetries*/), mIsInput(isInput(metadata)) {}
+
+std::vector<alsa::DeviceProfile> StreamPrimary::getDeviceProfiles() {
+    static const std::vector<alsa::DeviceProfile> kBuiltInSource{
+            alsa::DeviceProfile{.card = primary::PrimaryMixer::kAlsaCard,
+                                .device = primary::PrimaryMixer::kAlsaDevice,
+                                .direction = PCM_IN,
+                                .isExternal = false}};
+    static const std::vector<alsa::DeviceProfile> kBuiltInSink{
+            alsa::DeviceProfile{.card = primary::PrimaryMixer::kAlsaCard,
+                                .device = primary::PrimaryMixer::kAlsaDevice,
+                                .direction = PCM_OUT,
+                                .isExternal = false}};
+    return mIsInput ? kBuiltInSource : kBuiltInSink;
+}
+
+StreamInPrimary::StreamInPrimary(StreamContext&& context, const SinkMetadata& sinkMetadata,
+                                 const std::vector<MicrophoneInfo>& microphones)
+    : StreamIn(std::move(context), microphones),
+      StreamSwitcher(&mContextInstance, sinkMetadata),
+      StreamInHwGainHelper(&mContextInstance) {}
+
+bool StreamInPrimary::useStubStream(const AudioDevice& device) {
+    static const bool kSimulateInput =
+            GetBoolProperty("ro.boot.audio.tinyalsa.simulate_input", false);
+    return kSimulateInput || device.type.type == AudioDeviceType::IN_TELEPHONY_RX ||
+           device.type.type == AudioDeviceType::IN_FM_TUNER ||
+           device.type.connection == AudioDeviceDescription::CONNECTION_BUS;
+}
+
+StreamSwitcher::DeviceSwitchBehavior StreamInPrimary::switchCurrentStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
+    LOG(DEBUG) << __func__;
+    if (devices.size() > 1) {
+        LOG(ERROR) << __func__ << ": primary stream can only be connected to one device, got: "
+                   << devices.size();
+        return DeviceSwitchBehavior::UNSUPPORTED_DEVICES;
+    }
+    if (devices.empty() || useStubStream(devices[0]) == isStubStream()) {
+        return DeviceSwitchBehavior::USE_CURRENT_STREAM;
+    }
+    return DeviceSwitchBehavior::CREATE_NEW_STREAM;
+}
+
+std::unique_ptr<StreamCommonInterfaceEx> StreamInPrimary::createNewStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+        StreamContext* context, const Metadata& metadata) {
+    if (devices.empty()) {
+        LOG(FATAL) << __func__ << ": called with empty devices";  // see 'switchCurrentStream'
+    }
+    if (useStubStream(devices[0])) {
+        return std::unique_ptr<StreamCommonInterfaceEx>(
+                new InnerStreamWrapper<StreamStub>(context, metadata));
+    }
+    return std::unique_ptr<StreamCommonInterfaceEx>(
+            new InnerStreamWrapper<StreamPrimary>(context, metadata));
+}
+
+ndk::ScopedAStatus StreamInPrimary::getHwGain(std::vector<float>* _aidl_return) {
+    if (isStubStream()) {
+        return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
+    return getHwGainImpl(_aidl_return);
+}
+
+ndk::ScopedAStatus StreamInPrimary::setHwGain(const std::vector<float>& in_channelGains) {
+    if (isStubStream()) {
+        LOG(DEBUG) << __func__ << ": gains " << ::android::internal::ToString(in_channelGains);
+        return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
+    auto currentGains = mHwGains;
+    RETURN_STATUS_IF_ERROR(setHwGainImpl(in_channelGains));
+    if (in_channelGains.size() < 1) {
+        LOG(FATAL) << __func__ << ": unexpected gain vector size: " << in_channelGains.size();
+    }
+    if (auto status = primary::PrimaryMixer::getInstance().setMicGain(in_channelGains[0]);
+        !status.isOk()) {
+        mHwGains = currentGains;
+        return status;
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+StreamOutPrimary::StreamOutPrimary(StreamContext&& context, const SourceMetadata& sourceMetadata,
+                                   const std::optional<AudioOffloadInfo>& offloadInfo)
+    : StreamOut(std::move(context), offloadInfo),
+      StreamSwitcher(&mContextInstance, sourceMetadata),
+      StreamOutHwVolumeHelper(&mContextInstance) {}
+
+bool StreamOutPrimary::useStubStream(const AudioDevice& device) {
+    static const bool kSimulateOutput =
+            GetBoolProperty("ro.boot.audio.tinyalsa.ignore_output", false);
+    return kSimulateOutput || device.type.type == AudioDeviceType::OUT_TELEPHONY_TX ||
+           device.type.connection == AudioDeviceDescription::CONNECTION_BUS;
+}
+
+StreamSwitcher::DeviceSwitchBehavior StreamOutPrimary::switchCurrentStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
+    LOG(DEBUG) << __func__;
+    if (devices.size() > 1) {
+        LOG(ERROR) << __func__ << ": primary stream can only be connected to one device, got: "
+                   << devices.size();
+        return DeviceSwitchBehavior::UNSUPPORTED_DEVICES;
+    }
+    if (devices.empty() || useStubStream(devices[0]) == isStubStream()) {
+        return DeviceSwitchBehavior::USE_CURRENT_STREAM;
+    }
+    return DeviceSwitchBehavior::CREATE_NEW_STREAM;
+}
+
+std::unique_ptr<StreamCommonInterfaceEx> StreamOutPrimary::createNewStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+        StreamContext* context, const Metadata& metadata) {
+    if (devices.empty()) {
+        LOG(FATAL) << __func__ << ": called with empty devices";  // see 'switchCurrentStream'
+    }
+    if (useStubStream(devices[0])) {
+        return std::unique_ptr<StreamCommonInterfaceEx>(
+                new InnerStreamWrapper<StreamStub>(context, metadata));
+    }
+    return std::unique_ptr<StreamCommonInterfaceEx>(
+            new InnerStreamWrapper<StreamPrimary>(context, metadata));
+}
+
+ndk::ScopedAStatus StreamOutPrimary::getHwVolume(std::vector<float>* _aidl_return) {
+    if (isStubStream()) {
+        return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
+    return getHwVolumeImpl(_aidl_return);
+}
+
+ndk::ScopedAStatus StreamOutPrimary::setHwVolume(const std::vector<float>& in_channelVolumes) {
+    if (isStubStream()) {
+        LOG(DEBUG) << __func__ << ": volumes " << ::android::internal::ToString(in_channelVolumes);
+        return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
+    auto currentVolumes = mHwVolumes;
+    RETURN_STATUS_IF_ERROR(setHwVolumeImpl(in_channelVolumes));
+    if (auto status = primary::PrimaryMixer::getInstance().setVolumes(in_channelVolumes);
+        !status.isOk()) {
+        mHwVolumes = currentVolumes;
+        return status;
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
index 9537ebc..11838f8 100644
--- a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
+++ b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
@@ -23,15 +23,18 @@
 
 using aidl::android::hardware::audio::common::SinkMetadata;
 using aidl::android::hardware::audio::common::SourceMetadata;
+using aidl::android::hardware::audio::core::r_submix::SubmixRoute;
+using aidl::android::media::audio::common::AudioDeviceAddress;
 using aidl::android::media::audio::common::AudioOffloadInfo;
 using aidl::android::media::audio::common::MicrophoneDynamicInfo;
 using aidl::android::media::audio::common::MicrophoneInfo;
 
 namespace aidl::android::hardware::audio::core {
 
-StreamRemoteSubmix::StreamRemoteSubmix(StreamContext* context, const Metadata& metadata)
+StreamRemoteSubmix::StreamRemoteSubmix(StreamContext* context, const Metadata& metadata,
+                                       const AudioDeviceAddress& deviceAddress)
     : StreamCommonImpl(context, metadata),
-      mPortId(context->getPortId()),
+      mDeviceAddress(deviceAddress),
       mIsInput(isInput(metadata)) {
     mStreamConfig.frameSize = context->getFrameSize();
     mStreamConfig.format = context->getFormat();
@@ -40,13 +43,14 @@
 }
 
 std::mutex StreamRemoteSubmix::sSubmixRoutesLock;
-std::map<int32_t, std::shared_ptr<SubmixRoute>> StreamRemoteSubmix::sSubmixRoutes;
+std::map<AudioDeviceAddress, std::shared_ptr<SubmixRoute>> StreamRemoteSubmix::sSubmixRoutes;
 
 ::android::status_t StreamRemoteSubmix::init() {
     {
         std::lock_guard guard(sSubmixRoutesLock);
-        if (sSubmixRoutes.find(mPortId) != sSubmixRoutes.end()) {
-            mCurrentRoute = sSubmixRoutes[mPortId];
+        auto routeItr = sSubmixRoutes.find(mDeviceAddress);
+        if (routeItr != sSubmixRoutes.end()) {
+            mCurrentRoute = routeItr->second;
         }
     }
     // If route is not available for this port, add it.
@@ -59,7 +63,7 @@
         }
         {
             std::lock_guard guard(sSubmixRoutesLock);
-            sSubmixRoutes.emplace(mPortId, mCurrentRoute);
+            sSubmixRoutes.emplace(mDeviceAddress, mCurrentRoute);
         }
     } else {
         if (!mCurrentRoute->isStreamConfigValid(mIsInput, mStreamConfig)) {
@@ -116,8 +120,9 @@
         std::shared_ptr<SubmixRoute> route = nullptr;
         {
             std::lock_guard guard(sSubmixRoutesLock);
-            if (sSubmixRoutes.find(mPortId) != sSubmixRoutes.end()) {
-                route = sSubmixRoutes[mPortId];
+            auto routeItr = sSubmixRoutes.find(mDeviceAddress);
+            if (routeItr != sSubmixRoutes.end()) {
+                route = routeItr->second;
             }
         }
         if (route != nullptr) {
@@ -146,7 +151,7 @@
         LOG(DEBUG) << __func__ << ": pipe destroyed";
 
         std::lock_guard guard(sSubmixRoutesLock);
-        sSubmixRoutes.erase(mPortId);
+        sSubmixRoutes.erase(mDeviceAddress);
     }
     mCurrentRoute.reset();
 }
@@ -179,7 +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;
@@ -275,14 +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));
@@ -339,11 +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";
@@ -356,8 +363,7 @@
 StreamInRemoteSubmix::StreamInRemoteSubmix(StreamContext&& context,
                                            const SinkMetadata& sinkMetadata,
                                            const std::vector<MicrophoneInfo>& microphones)
-    : StreamIn(std::move(context), microphones),
-      StreamRemoteSubmix(&(StreamIn::mContext), sinkMetadata) {}
+    : StreamIn(std::move(context), microphones), StreamSwitcher(&mContextInstance, sinkMetadata) {}
 
 ndk::ScopedAStatus StreamInRemoteSubmix::getActiveMicrophones(
         std::vector<MicrophoneDynamicInfo>* _aidl_return) {
@@ -366,10 +372,66 @@
     return ndk::ScopedAStatus::ok();
 }
 
+StreamSwitcher::DeviceSwitchBehavior StreamInRemoteSubmix::switchCurrentStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
+    // This implementation effectively postpones stream creation until
+    // receiving the first call to 'setConnectedDevices' with a non-empty list.
+    if (isStubStream()) {
+        if (devices.size() == 1) {
+            auto deviceDesc = devices.front().type;
+            if (deviceDesc.type ==
+                ::aidl::android::media::audio::common::AudioDeviceType::IN_SUBMIX) {
+                return DeviceSwitchBehavior::CREATE_NEW_STREAM;
+            }
+            LOG(ERROR) << __func__ << ": Device type " << toString(deviceDesc.type)
+                       << " not supported";
+        } else {
+            LOG(ERROR) << __func__ << ": Only single device supported.";
+        }
+        return DeviceSwitchBehavior::UNSUPPORTED_DEVICES;
+    }
+    return DeviceSwitchBehavior::USE_CURRENT_STREAM;
+}
+
+std::unique_ptr<StreamCommonInterfaceEx> StreamInRemoteSubmix::createNewStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+        StreamContext* context, const Metadata& metadata) {
+    return std::unique_ptr<StreamCommonInterfaceEx>(
+            new InnerStreamWrapper<StreamRemoteSubmix>(context, metadata, devices.front().address));
+}
+
 StreamOutRemoteSubmix::StreamOutRemoteSubmix(StreamContext&& context,
                                              const SourceMetadata& sourceMetadata,
                                              const std::optional<AudioOffloadInfo>& offloadInfo)
     : StreamOut(std::move(context), offloadInfo),
-      StreamRemoteSubmix(&(StreamOut::mContext), sourceMetadata) {}
+      StreamSwitcher(&mContextInstance, sourceMetadata) {}
+
+StreamSwitcher::DeviceSwitchBehavior StreamOutRemoteSubmix::switchCurrentStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices) {
+    // This implementation effectively postpones stream creation until
+    // receiving the first call to 'setConnectedDevices' with a non-empty list.
+    if (isStubStream()) {
+        if (devices.size() == 1) {
+            auto deviceDesc = devices.front().type;
+            if (deviceDesc.type ==
+                ::aidl::android::media::audio::common::AudioDeviceType::OUT_SUBMIX) {
+                return DeviceSwitchBehavior::CREATE_NEW_STREAM;
+            }
+            LOG(ERROR) << __func__ << ": Device type " << toString(deviceDesc.type)
+                       << " not supported";
+        } else {
+            LOG(ERROR) << __func__ << ": Only single device supported.";
+        }
+        return DeviceSwitchBehavior::UNSUPPORTED_DEVICES;
+    }
+    return DeviceSwitchBehavior::USE_CURRENT_STREAM;
+}
+
+std::unique_ptr<StreamCommonInterfaceEx> StreamOutRemoteSubmix::createNewStream(
+        const std::vector<::aidl::android::media::audio::common::AudioDevice>& devices,
+        StreamContext* context, const Metadata& metadata) {
+    return std::unique_ptr<StreamCommonInterfaceEx>(
+            new InnerStreamWrapper<StreamRemoteSubmix>(context, metadata, devices.front().address));
+}
 
 }  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/stub/StreamStub.cpp b/audio/aidl/default/stub/StreamStub.cpp
index 66f4605..660a51e 100644
--- a/audio/aidl/default/stub/StreamStub.cpp
+++ b/audio/aidl/default/stub/StreamStub.cpp
@@ -33,6 +33,7 @@
 
 StreamStub::StreamStub(StreamContext* context, const Metadata& metadata)
     : StreamCommonImpl(context, metadata),
+      mBufferSizeFrames(getContext().getBufferSizeInFrames()),
       mFrameSizeBytes(getContext().getFrameSize()),
       mSampleRate(getContext().getSampleRate()),
       mIsAsynchronous(!!getContext().getAsyncCallback()),
@@ -40,7 +41,6 @@
 
 ::android::status_t StreamStub::init() {
     mIsInitialized = true;
-    usleep(500);
     return ::android::OK;
 }
 
@@ -48,7 +48,16 @@
     if (!mIsInitialized) {
         LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
     }
-    usleep(500);
+    if (!mIsInput) {
+        if (!mIsAsynchronous) {
+            static constexpr float kMicrosPerSecond = MICROS_PER_SECOND;
+            const size_t delayUs = static_cast<size_t>(
+                    std::roundf(mBufferSizeFrames * kMicrosPerSecond / mSampleRate));
+            usleep(delayUs);
+        } else {
+            usleep(500);
+        }
+    }
     return ::android::OK;
 }
 
@@ -56,7 +65,6 @@
     if (!mIsInitialized) {
         LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
     }
-    usleep(500);
     return ::android::OK;
 }
 
@@ -64,7 +72,6 @@
     if (!mIsInitialized) {
         LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
     }
-    usleep(500);
     return ::android::OK;
 }
 
@@ -120,11 +127,10 @@
 
 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..b60b4fd 100644
--- a/audio/aidl/default/usb/StreamUsb.cpp
+++ b/audio/aidl/default/usb/StreamUsb.cpp
@@ -18,14 +18,11 @@
 
 #define LOG_TAG "AHAL_StreamUsb"
 #include <android-base/logging.h>
-
-#include <Utils.h>
 #include <error/expected_utils.h>
 
 #include "UsbAlsaMixerControl.h"
 #include "core-impl/StreamUsb.h"
 
-using aidl::android::hardware::audio::common::getChannelCount;
 using aidl::android::hardware::audio::common::SinkMetadata;
 using aidl::android::hardware::audio::common::SourceMetadata;
 using aidl::android::media::audio::common::AudioDevice;
@@ -85,7 +82,7 @@
 
 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) {
@@ -96,15 +93,16 @@
 StreamOutUsb::StreamOutUsb(StreamContext&& context, const SourceMetadata& sourceMetadata,
                            const std::optional<AudioOffloadInfo>& offloadInfo)
     : StreamOut(std::move(context), offloadInfo),
-      StreamUsb(&(StreamOut::mContext), sourceMetadata),
-      mChannelCount(getChannelCount(getContext().getChannelLayout())) {}
+      StreamUsb(&mContextInstance, sourceMetadata),
+      StreamOutHwVolumeHelper(&mContextInstance) {}
 
 ndk::ScopedAStatus StreamOutUsb::getHwVolume(std::vector<float>* _aidl_return) {
-    *_aidl_return = mHwVolumes;
-    return ndk::ScopedAStatus::ok();
+    return getHwVolumeImpl(_aidl_return);
 }
 
 ndk::ScopedAStatus StreamOutUsb::setHwVolume(const std::vector<float>& in_channelVolumes) {
+    auto currentVolumes = mHwVolumes;
+    RETURN_STATUS_IF_ERROR(setHwVolumeImpl(in_channelVolumes));
     // Avoid using mConnectedDeviceProfiles because it requires a lock.
     for (const auto& device : getConnectedDevices()) {
         if (auto deviceProfile = alsa::getDeviceProfile(device, mIsInput);
@@ -114,11 +112,11 @@
                 !result.isOk()) {
                 LOG(ERROR) << __func__
                            << ": failed to set volume for device address=" << *deviceProfile;
+                mHwVolumes = currentVolumes;
                 return result;
             }
         }
     }
-    mHwVolumes = in_channelVolumes;
     return ndk::ScopedAStatus::ok();
 }
 
diff --git a/audio/aidl/vts/Android.bp b/audio/aidl/vts/Android.bp
index 852255d..f7cf4ce 100644
--- a/audio/aidl/vts/Android.bp
+++ b/audio/aidl/vts/Android.bp
@@ -55,6 +55,7 @@
         "VtsHalAudioCoreConfigTargetTest.cpp",
         "VtsHalAudioCoreModuleTargetTest.cpp",
     ],
+    test_config: "VtsHalAudioCoreTargetTest.xml",
 }
 
 cc_test {
diff --git a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
index 0012cd5..b680373 100644
--- a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
@@ -3189,10 +3189,17 @@
     std::string mUnexpectedTransition;
 };
 
-enum { NAMED_CMD_NAME, NAMED_CMD_DELAY_MS, NAMED_CMD_STREAM_TYPE, NAMED_CMD_CMDS };
+enum {
+    NAMED_CMD_NAME,
+    NAMED_CMD_DELAY_MS,
+    NAMED_CMD_STREAM_TYPE,
+    NAMED_CMD_CMDS,
+    NAMED_CMD_VALIDATE_POS_INCREASE
+};
 enum class StreamTypeFilter { ANY, SYNC, ASYNC };
 using NamedCommandSequence =
-        std::tuple<std::string, int, StreamTypeFilter, std::shared_ptr<StateSequence>>;
+        std::tuple<std::string, int /*cmdDelayMs*/, StreamTypeFilter,
+                   std::shared_ptr<StateSequence>, bool /*validatePositionIncrease*/>;
 enum { PARAM_MODULE_NAME, PARAM_CMD_SEQ, PARAM_SETUP_SEQ };
 using StreamIoTestParameters =
         std::tuple<std::string /*moduleName*/, NamedCommandSequence, bool /*useSetupSequence2*/>;
@@ -3236,10 +3243,14 @@
             ASSERT_NO_FATAL_FAILURE(delayTransientStates.SetUp(module.get()));
             const auto& commandsAndStates =
                     std::get<NAMED_CMD_CMDS>(std::get<PARAM_CMD_SEQ>(GetParam()));
+            const bool validatePositionIncrease =
+                    std::get<NAMED_CMD_VALIDATE_POS_INCREASE>(std::get<PARAM_CMD_SEQ>(GetParam()));
             if (!std::get<PARAM_SETUP_SEQ>(GetParam())) {
-                ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq1(portConfig, commandsAndStates));
+                ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq1(portConfig, commandsAndStates,
+                                                                    validatePositionIncrease));
             } else {
-                ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq2(portConfig, commandsAndStates));
+                ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq2(portConfig, commandsAndStates,
+                                                                    validatePositionIncrease));
             }
             if (isNonBlocking) {
                 // Also try running the same sequence with "aosp.forceTransientBurst" set.
@@ -3250,11 +3261,11 @@
                 if (forceTransientBurst.SetUpNoChecks(module.get(), true /*failureExpected*/)
                             .isOk()) {
                     if (!std::get<PARAM_SETUP_SEQ>(GetParam())) {
-                        ASSERT_NO_FATAL_FAILURE(
-                                RunStreamIoCommandsImplSeq1(portConfig, commandsAndStates));
+                        ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq1(
+                                portConfig, commandsAndStates, validatePositionIncrease));
                     } else {
-                        ASSERT_NO_FATAL_FAILURE(
-                                RunStreamIoCommandsImplSeq2(portConfig, commandsAndStates));
+                        ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq2(
+                                portConfig, commandsAndStates, validatePositionIncrease));
                     }
                 }
             } else if (!IOTraits<Stream>::is_input) {
@@ -3267,11 +3278,11 @@
                 if (forceSynchronousDrain.SetUpNoChecks(module.get(), true /*failureExpected*/)
                             .isOk()) {
                     if (!std::get<PARAM_SETUP_SEQ>(GetParam())) {
-                        ASSERT_NO_FATAL_FAILURE(
-                                RunStreamIoCommandsImplSeq1(portConfig, commandsAndStates));
+                        ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq1(
+                                portConfig, commandsAndStates, validatePositionIncrease));
                     } else {
-                        ASSERT_NO_FATAL_FAILURE(
-                                RunStreamIoCommandsImplSeq2(portConfig, commandsAndStates));
+                        ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq2(
+                                portConfig, commandsAndStates, validatePositionIncrease));
                     }
                 }
             }
@@ -3285,11 +3296,13 @@
 
     // Set up a patch first, then open a stream.
     void RunStreamIoCommandsImplSeq1(const AudioPortConfig& portConfig,
-                                     std::shared_ptr<StateSequence> commandsAndStates) {
+                                     std::shared_ptr<StateSequence> commandsAndStates,
+                                     bool validatePositionIncrease) {
         auto devicePorts = moduleConfig->getAttachedDevicesPortsForMixPort(
                 IOTraits<Stream>::is_input, portConfig);
         ASSERT_FALSE(devicePorts.empty());
         auto devicePortConfig = moduleConfig->getSingleConfigForDevicePort(devicePorts[0]);
+        SCOPED_TRACE(devicePortConfig.toString());
         WithAudioPatch patch(IOTraits<Stream>::is_input, portConfig, devicePortConfig);
         ASSERT_NO_FATAL_FAILURE(patch.SetUp(module.get()));
 
@@ -3307,14 +3320,17 @@
         EXPECT_FALSE(worker.hasError()) << worker.getError();
         EXPECT_EQ("", driver.getUnexpectedStateTransition());
         if (ValidateObservablePosition(devicePortConfig)) {
-            EXPECT_TRUE(driver.hasObservablePositionIncrease());
+            if (validatePositionIncrease) {
+                EXPECT_TRUE(driver.hasObservablePositionIncrease());
+            }
             EXPECT_FALSE(driver.hasRetrogradeObservablePosition());
         }
     }
 
     // Open a stream, then set up a patch for it.
     void RunStreamIoCommandsImplSeq2(const AudioPortConfig& portConfig,
-                                     std::shared_ptr<StateSequence> commandsAndStates) {
+                                     std::shared_ptr<StateSequence> commandsAndStates,
+                                     bool validatePositionIncrease) {
         WithStream<Stream> stream(portConfig);
         ASSERT_NO_FATAL_FAILURE(stream.SetUp(module.get(), kDefaultBufferSizeFrames));
         StreamLogicDefaultDriver driver(commandsAndStates,
@@ -3326,6 +3342,7 @@
                 IOTraits<Stream>::is_input, portConfig);
         ASSERT_FALSE(devicePorts.empty());
         auto devicePortConfig = moduleConfig->getSingleConfigForDevicePort(devicePorts[0]);
+        SCOPED_TRACE(devicePortConfig.toString());
         WithAudioPatch patch(IOTraits<Stream>::is_input, stream.getPortConfig(), devicePortConfig);
         ASSERT_NO_FATAL_FAILURE(patch.SetUp(module.get()));
 
@@ -3336,7 +3353,9 @@
         EXPECT_FALSE(worker.hasError()) << worker.getError();
         EXPECT_EQ("", driver.getUnexpectedStateTransition());
         if (ValidateObservablePosition(devicePortConfig)) {
-            EXPECT_TRUE(driver.hasObservablePositionIncrease());
+            if (validatePositionIncrease) {
+                EXPECT_TRUE(driver.hasObservablePositionIncrease());
+            }
             EXPECT_FALSE(driver.hasRetrogradeObservablePosition());
         }
     }
@@ -3673,22 +3692,28 @@
     using State = StreamDescriptor::State;
     auto d = std::make_unique<StateDag>();
     StateDag::Node last = d->makeFinalNode(State::ACTIVE);
-    StateDag::Node active = d->makeNode(State::ACTIVE, kBurstCommand, last);
+    // Use a couple of bursts to ensure that the driver starts reporting the position.
+    StateDag::Node active2 = d->makeNode(State::ACTIVE, kBurstCommand, last);
+    StateDag::Node active = d->makeNode(State::ACTIVE, kBurstCommand, active2);
     StateDag::Node idle = d->makeNode(State::IDLE, kBurstCommand, active);
     if (!isSync) {
         // Allow optional routing via the TRANSFERRING state on bursts.
-        active.children().push_back(d->makeNode(State::TRANSFERRING, kTransferReadyEvent, last));
+        active2.children().push_back(d->makeNode(State::TRANSFERRING, kTransferReadyEvent, last));
+        active.children().push_back(d->makeNode(State::TRANSFERRING, kTransferReadyEvent, active2));
         idle.children().push_back(d->makeNode(State::TRANSFERRING, kTransferReadyEvent, active));
     }
     d->makeNode(State::STANDBY, kStartCommand, idle);
     return std::make_shared<StateSequenceFollower>(std::move(d));
 }
 static const NamedCommandSequence kReadSeq =
-        std::make_tuple(std::string("Read"), 0, StreamTypeFilter::ANY, makeBurstCommands(true));
+        std::make_tuple(std::string("Read"), 0, StreamTypeFilter::ANY, makeBurstCommands(true),
+                        true /*validatePositionIncrease*/);
 static const NamedCommandSequence kWriteSyncSeq =
-        std::make_tuple(std::string("Write"), 0, StreamTypeFilter::SYNC, makeBurstCommands(true));
+        std::make_tuple(std::string("Write"), 0, StreamTypeFilter::SYNC, makeBurstCommands(true),
+                        true /*validatePositionIncrease*/);
 static const NamedCommandSequence kWriteAsyncSeq =
-        std::make_tuple(std::string("Write"), 0, StreamTypeFilter::ASYNC, makeBurstCommands(false));
+        std::make_tuple(std::string("Write"), 0, StreamTypeFilter::ASYNC, makeBurstCommands(false),
+                        true /*validatePositionIncrease*/);
 
 std::shared_ptr<StateSequence> makeAsyncDrainCommands(bool isInput) {
     using State = StreamDescriptor::State;
@@ -3716,11 +3741,12 @@
     }
     return std::make_shared<StateSequenceFollower>(std::move(d));
 }
-static const NamedCommandSequence kWriteDrainAsyncSeq =
-        std::make_tuple(std::string("WriteDrain"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::ASYNC, makeAsyncDrainCommands(false));
-static const NamedCommandSequence kDrainInSeq = std::make_tuple(
-        std::string("Drain"), 0, StreamTypeFilter::ANY, makeAsyncDrainCommands(true));
+static const NamedCommandSequence kWriteDrainAsyncSeq = std::make_tuple(
+        std::string("WriteDrain"), kStreamTransientStateTransitionDelayMs, StreamTypeFilter::ASYNC,
+        makeAsyncDrainCommands(false), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kDrainInSeq =
+        std::make_tuple(std::string("Drain"), 0, StreamTypeFilter::ANY,
+                        makeAsyncDrainCommands(true), false /*validatePositionIncrease*/);
 
 std::shared_ptr<StateSequence> makeDrainOutCommands(bool isSync) {
     using State = StreamDescriptor::State;
@@ -3740,10 +3766,12 @@
     d->makeNode(State::STANDBY, kStartCommand, idle);
     return std::make_shared<StateSequenceFollower>(std::move(d));
 }
-static const NamedCommandSequence kDrainOutSyncSeq = std::make_tuple(
-        std::string("Drain"), 0, StreamTypeFilter::SYNC, makeDrainOutCommands(true));
-static const NamedCommandSequence kDrainOutAsyncSeq = std::make_tuple(
-        std::string("Drain"), 0, StreamTypeFilter::ASYNC, makeDrainOutCommands(false));
+static const NamedCommandSequence kDrainOutSyncSeq =
+        std::make_tuple(std::string("Drain"), 0, StreamTypeFilter::SYNC, makeDrainOutCommands(true),
+                        false /*validatePositionIncrease*/);
+static const NamedCommandSequence kDrainOutAsyncSeq =
+        std::make_tuple(std::string("Drain"), 0, StreamTypeFilter::ASYNC,
+                        makeDrainOutCommands(false), false /*validatePositionIncrease*/);
 
 std::shared_ptr<StateSequence> makeDrainPauseOutCommands(bool isSync) {
     using State = StreamDescriptor::State;
@@ -3764,12 +3792,12 @@
     d->makeNode(State::STANDBY, kStartCommand, idle);
     return std::make_shared<StateSequenceFollower>(std::move(d));
 }
-static const NamedCommandSequence kDrainPauseOutSyncSeq =
-        std::make_tuple(std::string("DrainPause"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::SYNC, makeDrainPauseOutCommands(true));
-static const NamedCommandSequence kDrainPauseOutAsyncSeq =
-        std::make_tuple(std::string("DrainPause"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::ASYNC, makeDrainPauseOutCommands(false));
+static const NamedCommandSequence kDrainPauseOutSyncSeq = std::make_tuple(
+        std::string("DrainPause"), kStreamTransientStateTransitionDelayMs, StreamTypeFilter::SYNC,
+        makeDrainPauseOutCommands(true), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kDrainPauseOutAsyncSeq = std::make_tuple(
+        std::string("DrainPause"), kStreamTransientStateTransitionDelayMs, StreamTypeFilter::ASYNC,
+        makeDrainPauseOutCommands(false), false /*validatePositionIncrease*/);
 
 // This sequence also verifies that the capture / presentation position is not reset on standby.
 std::shared_ptr<StateSequence> makeStandbyCommands(bool isInput, bool isSync) {
@@ -3810,13 +3838,15 @@
     }
     return std::make_shared<StateSequenceFollower>(std::move(d));
 }
-static const NamedCommandSequence kStandbyInSeq = std::make_tuple(
-        std::string("Standby"), 0, StreamTypeFilter::ANY, makeStandbyCommands(true, false));
-static const NamedCommandSequence kStandbyOutSyncSeq = std::make_tuple(
-        std::string("Standby"), 0, StreamTypeFilter::SYNC, makeStandbyCommands(false, true));
-static const NamedCommandSequence kStandbyOutAsyncSeq =
-        std::make_tuple(std::string("Standby"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::ASYNC, makeStandbyCommands(false, false));
+static const NamedCommandSequence kStandbyInSeq =
+        std::make_tuple(std::string("Standby"), 0, StreamTypeFilter::ANY,
+                        makeStandbyCommands(true, false), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kStandbyOutSyncSeq =
+        std::make_tuple(std::string("Standby"), 0, StreamTypeFilter::SYNC,
+                        makeStandbyCommands(false, true), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kStandbyOutAsyncSeq = std::make_tuple(
+        std::string("Standby"), kStreamTransientStateTransitionDelayMs, StreamTypeFilter::ASYNC,
+        makeStandbyCommands(false, false), false /*validatePositionIncrease*/);
 
 std::shared_ptr<StateSequence> makePauseCommands(bool isInput, bool isSync) {
     using State = StreamDescriptor::State;
@@ -3851,13 +3881,15 @@
     }
     return std::make_shared<StateSequenceFollower>(std::move(d));
 }
-static const NamedCommandSequence kPauseInSeq = std::make_tuple(
-        std::string("Pause"), 0, StreamTypeFilter::ANY, makePauseCommands(true, false));
-static const NamedCommandSequence kPauseOutSyncSeq = std::make_tuple(
-        std::string("Pause"), 0, StreamTypeFilter::SYNC, makePauseCommands(false, true));
-static const NamedCommandSequence kPauseOutAsyncSeq =
-        std::make_tuple(std::string("Pause"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::ASYNC, makePauseCommands(false, false));
+static const NamedCommandSequence kPauseInSeq =
+        std::make_tuple(std::string("Pause"), 0, StreamTypeFilter::ANY,
+                        makePauseCommands(true, false), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kPauseOutSyncSeq =
+        std::make_tuple(std::string("Pause"), 0, StreamTypeFilter::SYNC,
+                        makePauseCommands(false, true), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kPauseOutAsyncSeq = std::make_tuple(
+        std::string("Pause"), kStreamTransientStateTransitionDelayMs, StreamTypeFilter::ASYNC,
+        makePauseCommands(false, false), false /*validatePositionIncrease*/);
 
 std::shared_ptr<StateSequence> makeFlushCommands(bool isInput, bool isSync) {
     using State = StreamDescriptor::State;
@@ -3884,13 +3916,15 @@
     }
     return std::make_shared<StateSequenceFollower>(std::move(d));
 }
-static const NamedCommandSequence kFlushInSeq = std::make_tuple(
-        std::string("Flush"), 0, StreamTypeFilter::ANY, makeFlushCommands(true, false));
-static const NamedCommandSequence kFlushOutSyncSeq = std::make_tuple(
-        std::string("Flush"), 0, StreamTypeFilter::SYNC, makeFlushCommands(false, true));
-static const NamedCommandSequence kFlushOutAsyncSeq =
-        std::make_tuple(std::string("Flush"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::ASYNC, makeFlushCommands(false, false));
+static const NamedCommandSequence kFlushInSeq =
+        std::make_tuple(std::string("Flush"), 0, StreamTypeFilter::ANY,
+                        makeFlushCommands(true, false), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kFlushOutSyncSeq =
+        std::make_tuple(std::string("Flush"), 0, StreamTypeFilter::SYNC,
+                        makeFlushCommands(false, true), false /*validatePositionIncrease*/);
+static const NamedCommandSequence kFlushOutAsyncSeq = std::make_tuple(
+        std::string("Flush"), kStreamTransientStateTransitionDelayMs, StreamTypeFilter::ASYNC,
+        makeFlushCommands(false, false), false /*validatePositionIncrease*/);
 
 std::shared_ptr<StateSequence> makeDrainPauseFlushOutCommands(bool isSync) {
     using State = StreamDescriptor::State;
@@ -3911,10 +3945,12 @@
 }
 static const NamedCommandSequence kDrainPauseFlushOutSyncSeq =
         std::make_tuple(std::string("DrainPauseFlush"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::SYNC, makeDrainPauseFlushOutCommands(true));
+                        StreamTypeFilter::SYNC, makeDrainPauseFlushOutCommands(true),
+                        false /*validatePositionIncrease*/);
 static const NamedCommandSequence kDrainPauseFlushOutAsyncSeq =
         std::make_tuple(std::string("DrainPauseFlush"), kStreamTransientStateTransitionDelayMs,
-                        StreamTypeFilter::ASYNC, makeDrainPauseFlushOutCommands(false));
+                        StreamTypeFilter::ASYNC, makeDrainPauseFlushOutCommands(false),
+                        false /*validatePositionIncrease*/);
 
 // Note, this isn't the "official" enum printer, it is only used to make the test name suffix.
 std::string PrintStreamFilterToString(StreamTypeFilter filter) {
diff --git a/audio/aidl/vts/VtsHalAudioCoreTargetTest.xml b/audio/aidl/vts/VtsHalAudioCoreTargetTest.xml
index dfc1039..9d3adc1 100644
--- a/audio/aidl/vts/VtsHalAudioCoreTargetTest.xml
+++ b/audio/aidl/vts/VtsHalAudioCoreTargetTest.xml
@@ -25,6 +25,11 @@
         <option name="teardown-command" value="setprop vts.native_server.on 0"/>
     </target_preparer>
 
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push" value="VtsHalAudioCoreTargetTest->/data/local/tmp/VtsHalAudioCoreTargetTest" />
+    </target_preparer>
+
     <test class="com.android.tradefed.testtype.GTest" >
         <option name="native-test-device-path" value="/data/local/tmp" />
         <option name="module-name" value="VtsHalAudioCoreTargetTest" />
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/bluetooth/aidl/default/BluetoothHci.cpp b/bluetooth/aidl/default/BluetoothHci.cpp
index 782122f..013ab7f 100644
--- a/bluetooth/aidl/default/BluetoothHci.cpp
+++ b/bluetooth/aidl/default/BluetoothHci.cpp
@@ -55,6 +55,19 @@
 
 void OnDeath(void* cookie);
 
+std::optional<std::string> GetSystemProperty(const std::string& property) {
+  std::array<char, PROPERTY_VALUE_MAX> value_array{0};
+  auto value_len = property_get(property.c_str(), value_array.data(), nullptr);
+  if (value_len <= 0) {
+    return std::nullopt;
+  }
+  return std::string(value_array.data(), value_len);
+}
+
+bool starts_with(const std::string& str, const std::string& prefix) {
+  return str.compare(0, prefix.length(), prefix) == 0;
+}
+
 class BluetoothDeathRecipient {
  public:
   BluetoothDeathRecipient(BluetoothHci* hci) : mHci(hci) {}
@@ -232,8 +245,19 @@
 
   mDeathRecipient->LinkToDeath(mCb);
 
-  // TODO: This should not be necessary when the device implements rfkill.
-  reset();
+  // TODO: HCI Reset on emulators since the bluetooth controller
+  // cannot be powered on/off during the HAL setup; and the stack
+  // might received spurious packets/events during boottime.
+  // Proper solution would be to use bt-virtio or vsock to better
+  // control the link to rootcanal and the controller lifetime.
+  const std::string kBoardProperty = "ro.product.board";
+  const std::string kCuttlefishBoard = "cutf";
+  auto board_name = GetSystemProperty(kBoardProperty);
+  if (board_name.has_value() && (
+        starts_with(board_name.value(), "cutf") ||
+        starts_with(board_name.value(), "goldfish"))) {
+    reset();
+  }
 
   mH4 = std::make_shared<H4Protocol>(
       mFd,
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 ee5527e..0bcafa3 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"
 
@@ -440,6 +441,16 @@
 void BluetoothAudioSession::ReportLowLatencyModeAllowedChanged(bool allowed) {
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   low_latency_allowed_ = allowed;
+  // TODO(b/294498919): Remove this after there is API to update latency mode
+  // after audio session started. If low_latency_allowed_ is true, the session
+  // can support LOW_LATENCY and FREE LatencyMode.
+  if (low_latency_allowed_) {
+    if (std::find(latency_modes_.begin(), latency_modes_.end(),
+                  LatencyMode::LOW_LATENCY) == latency_modes_.end()) {
+      LOG(INFO) << __func__ << " - insert LOW_LATENCY LatencyMode";
+      latency_modes_.push_back(LatencyMode::LOW_LATENCY);
+    }
+  }
   if (observers_.empty()) {
     LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
                  << " has NO port state observer";
@@ -476,23 +487,9 @@
 
 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++) {
@@ -509,33 +506,14 @@
                  << 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++) {
@@ -550,12 +528,57 @@
               << ", 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 5bf17bd..103a9ea 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 {
@@ -183,6 +186,9 @@
   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 0782c82..7ae0353 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
@@ -156,6 +156,26 @@
     }
   }
 
+  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/cas/1.0/default/android.hardware.cas@1.0-service-lazy.rc b/cas/1.0/default/android.hardware.cas@1.0-service-lazy.rc
index 622ee8f..1a08ebc 100644
--- a/cas/1.0/default/android.hardware.cas@1.0-service-lazy.rc
+++ b/cas/1.0/default/android.hardware.cas@1.0-service-lazy.rc
@@ -5,5 +5,6 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
diff --git a/cas/1.0/default/android.hardware.cas@1.0-service.rc b/cas/1.0/default/android.hardware.cas@1.0-service.rc
index 5df4825..a65160a 100644
--- a/cas/1.0/default/android.hardware.cas@1.0-service.rc
+++ b/cas/1.0/default/android.hardware.cas@1.0-service.rc
@@ -2,5 +2,6 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
diff --git a/cas/1.1/default/android.hardware.cas@1.1-service-lazy.rc b/cas/1.1/default/android.hardware.cas@1.1-service-lazy.rc
index 0721dc3..9fca8fd 100644
--- a/cas/1.1/default/android.hardware.cas@1.1-service-lazy.rc
+++ b/cas/1.1/default/android.hardware.cas@1.1-service-lazy.rc
@@ -6,5 +6,6 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
diff --git a/cas/1.1/default/android.hardware.cas@1.1-service.rc b/cas/1.1/default/android.hardware.cas@1.1-service.rc
index 132d943..19fd031 100644
--- a/cas/1.1/default/android.hardware.cas@1.1-service.rc
+++ b/cas/1.1/default/android.hardware.cas@1.1-service.rc
@@ -2,5 +2,6 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
diff --git a/cas/1.2/default/android.hardware.cas@1.2-service-lazy.rc b/cas/1.2/default/android.hardware.cas@1.2-service-lazy.rc
index d91fdce..8c2a894 100644
--- a/cas/1.2/default/android.hardware.cas@1.2-service-lazy.rc
+++ b/cas/1.2/default/android.hardware.cas@1.2-service-lazy.rc
@@ -7,5 +7,6 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
diff --git a/cas/1.2/default/android.hardware.cas@1.2-service.rc b/cas/1.2/default/android.hardware.cas@1.2-service.rc
index b22971a..4b638bc 100644
--- a/cas/1.2/default/android.hardware.cas@1.2-service.rc
+++ b/cas/1.2/default/android.hardware.cas@1.2-service.rc
@@ -2,5 +2,6 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
diff --git a/cas/aidl/default/cas-default-lazy.rc b/cas/aidl/default/cas-default-lazy.rc
index 60b59ca..7321cf0 100644
--- a/cas/aidl/default/cas-default-lazy.rc
+++ b/cas/aidl/default/cas-default-lazy.rc
@@ -3,6 +3,7 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
     oneshot
diff --git a/cas/aidl/default/cas-default.rc b/cas/aidl/default/cas-default.rc
index e00b9c5..5a60368 100644
--- a/cas/aidl/default/cas-default.rc
+++ b/cas/aidl/default/cas-default.rc
@@ -3,5 +3,6 @@
     class hal
     user media
     group mediadrm drmrpc
+    capabilities SYS_NICE
     ioprio rt 4
     task_profiles ProcessCapacityHigh
diff --git a/compatibility_matrices/compatibility_matrix.7.xml b/compatibility_matrices/compatibility_matrix.7.xml
index 33c3148..e20fcec 100644
--- a/compatibility_matrices/compatibility_matrix.7.xml
+++ b/compatibility_matrices/compatibility_matrix.7.xml
@@ -43,6 +43,7 @@
     </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.automotive.audiocontrol</name>
+        <version>1-2</version>
         <interface>
             <name>IAudioControl</name>
             <instance>default</instance>
diff --git a/compatibility_matrices/compatibility_matrix.9.xml b/compatibility_matrices/compatibility_matrix.9.xml
index 5bcb349..0928f14 100644
--- a/compatibility_matrices/compatibility_matrix.9.xml
+++ b/compatibility_matrices/compatibility_matrix.9.xml
@@ -584,6 +584,14 @@
         </interface>
     </hal>
     <hal format="aidl" optional="true">
+        <name>android.hardware.threadnetwork</name>
+        <version>1</version>
+        <interface>
+            <name>IThreadChip</name>
+            <instance>chip0</instance>
+        </interface>
+    </hal>
+    <hal format="aidl" optional="true">
         <name>android.hardware.tv.hdmi.cec</name>
         <version>1</version>
         <interface>
diff --git a/compatibility_matrices/exclude/fcm_exclude.cpp b/compatibility_matrices/exclude/fcm_exclude.cpp
index fc3a8b3..d92c0b9 100644
--- a/compatibility_matrices/exclude/fcm_exclude.cpp
+++ b/compatibility_matrices/exclude/fcm_exclude.cpp
@@ -24,9 +24,7 @@
 namespace android::vintf::details {
 
 // The predicate to VintfObject::checkMissingHalsInMatrices.
-bool ShouldCheckMissingHalsInFcm(const std::string& package) {
-    using std::placeholders::_1;
-
+bool ShouldCheckMissingHidlHalsInFcm(const std::string& packageAndVersion) {
     static std::vector<std::string> included_prefixes{
             // Other AOSP HALs (e.g. android.frameworks.*) are not added because only framework
             // matrix is checked.
@@ -51,29 +49,11 @@
             "android.hardware.media.bufferpool@1.0",
             "android.hardware.media.bufferpool@2.0",
             "android.hardware.radio.config@1.2",
-            // AIDL
-            "android.hardware.audio.common",
-            "android.hardware.audio.core.sounddose",
-            "android.hardware.biometrics.common",
-            "android.hardware.camera.metadata",
-            "android.hardware.camera.device",
-            "android.hardware.camera.common",
-            "android.hardware.common",
-            "android.hardware.common.fmq",
-            "android.hardware.graphics.common",
-            "android.hardware.input.common",
-            "android.hardware.keymaster",
-            "android.hardware.media.bufferpool2",
-            "android.hardware.radio",
-            "android.hardware.threadnetwork",
-            "android.hardware.uwb.fira_android",
 
             // Fastboot HAL is only used by recovery. Recovery is owned by OEM. Framework
             // does not depend on this HAL, hence it is not declared in any manifests or matrices.
             "android.hardware.fastboot@1.0",
             "android.hardware.fastboot@1.1",
-            // Fastboot AIDL
-            "android.hardware.fastboot",
 
             // Deprecated HALs.
             // HIDL
@@ -107,7 +87,7 @@
     };
 
     auto package_has_prefix = [&](const std::string& prefix) {
-        return android::base::StartsWith(package, prefix);
+        return android::base::StartsWith(packageAndVersion, prefix);
     };
 
     // Only check packageAndVersions that are in the include list and not in the exclude list.
@@ -115,7 +95,69 @@
         return false;
     }
 
-    if (std::find(excluded_exact.begin(), excluded_exact.end(), package) != excluded_exact.end()) {
+    if (std::find(excluded_exact.begin(), excluded_exact.end(), packageAndVersion) !=
+        excluded_exact.end()) {
+        return false;
+    }
+
+    return !std::any_of(excluded_prefixes.begin(), excluded_prefixes.end(), package_has_prefix);
+}
+
+// The predicate to VintfObject::checkMissingHalsInMatrices.
+bool ShouldCheckMissingAidlHalsInFcm(const std::string& packageAndVersion) {
+    static std::vector<std::string> included_prefixes{
+            // Other AOSP HALs (e.g. android.frameworks.*) are not added because only framework
+            // matrix is checked.
+            "android.hardware.",
+    };
+
+    static std::vector<std::string> excluded_prefixes{
+            // Packages without top level interfaces (including types-only packages) are exempted.
+            "android.hardware.audio.common@",
+            "android.hardware.biometrics.common@",
+            "android.hardware.camera.metadata@",
+            "android.hardware.camera.device@",
+            "android.hardware.camera.common@",
+            "android.hardware.common@",
+            "android.hardware.common.fmq@",
+            "android.hardware.gnss.measurement_corrections@",
+            "android.hardware.gnss.visibility_control@",
+            "android.hardware.graphics.common@",
+            "android.hardware.input.common@",
+            "android.hardware.keymaster@",
+            "android.hardware.media.bufferpool2@",
+            "android.hardware.radio@",
+            "android.hardware.uwb.fira_android@",
+
+            // Test packages are exempted.
+            "android.hardware.tests.",
+
+            // Fastboot HAL is only used by recovery. Recovery is owned by OEM. Framework
+            // does not depend on this HAL, hence it is not declared in any manifests or matrices.
+            "android.hardware.fastboot@",
+    };
+
+    static std::vector<std::string> excluded_exact{
+            // Packages without top level interfaces (including types-only packages) are exempted.
+
+            // AIDL
+            "android.hardware.audio.core.sounddose@1",
+
+            // Deprecated HALs.
+            "android.hardware.bluetooth.audio@1",
+    };
+
+    auto package_has_prefix = [&](const std::string& prefix) {
+        return android::base::StartsWith(packageAndVersion, prefix);
+    };
+
+    // Only check packageAndVersions that are in the include list and not in the exclude list.
+    if (!std::any_of(included_prefixes.begin(), included_prefixes.end(), package_has_prefix)) {
+        return false;
+    }
+
+    if (std::find(excluded_exact.begin(), excluded_exact.end(), packageAndVersion) !=
+        excluded_exact.end()) {
         return false;
     }
 
diff --git a/compatibility_matrices/exclude/include/vintf/fcm_exclude.h b/compatibility_matrices/exclude/include/vintf/fcm_exclude.h
index f74c217..e7ef4a0 100644
--- a/compatibility_matrices/exclude/include/vintf/fcm_exclude.h
+++ b/compatibility_matrices/exclude/include/vintf/fcm_exclude.h
@@ -24,7 +24,8 @@
 // Determine whether VINTF checks |package| is missing from FCMs.
 // |package| can be a HIDL package and version like
 // "android.hardware.foo@1.0", or an AIDL package name like
-// "android.hardware.foo".
-bool ShouldCheckMissingHalsInFcm(const std::string& package);
+// "android.hardware.foo@1".
+bool ShouldCheckMissingHidlHalsInFcm(const std::string& packageAndVersion);
+bool ShouldCheckMissingAidlHalsInFcm(const std::string& packageAndVersion);
 
 }  // namespace android::vintf::details
diff --git a/gatekeeper/aidl/vts/functional/VtsHalGatekeeperTargetTest.cpp b/gatekeeper/aidl/vts/functional/VtsHalGatekeeperTargetTest.cpp
index c89243b..032f7e2 100644
--- a/gatekeeper/aidl/vts/functional/VtsHalGatekeeperTargetTest.cpp
+++ b/gatekeeper/aidl/vts/functional/VtsHalGatekeeperTargetTest.cpp
@@ -221,6 +221,47 @@
 }
 
 /**
+ * Ensure that passwords containing a NUL byte aren't truncated
+ */
+TEST_P(GatekeeperAidlTest, PasswordIsBinaryData) {
+    GatekeeperEnrollResponse enrollRsp;
+    GatekeeperVerifyResponse verifyRsp;
+    std::vector<uint8_t> rightPassword = {'A', 'B', 'C', '\0', 'D', 'E', 'F'};
+    std::vector<uint8_t> wrongPassword = {'A', 'B', 'C', '\0', '\0', '\0', '\0'};
+
+    ALOGI("Testing Enroll+Verify of password with embedded NUL (expected success)");
+    enrollNewPassword(rightPassword, enrollRsp, true);
+    verifyPassword(rightPassword, enrollRsp.data, 1, verifyRsp, true);
+
+    ALOGI("Testing Verify of wrong password (expected failure)");
+    verifyPassword(wrongPassword, enrollRsp.data, 1, verifyRsp, false);
+
+    ALOGI("PasswordIsBinaryData test done");
+}
+
+/**
+ * Ensure that long passwords aren't truncated
+ */
+TEST_P(GatekeeperAidlTest, LongPassword) {
+    GatekeeperEnrollResponse enrollRsp;
+    GatekeeperVerifyResponse verifyRsp;
+    std::vector<uint8_t> password;
+
+    password.resize(64);  // maximum length used by Android
+    memset(password.data(), 'A', password.size());
+
+    ALOGI("Testing Enroll+Verify of long password (expected success)");
+    enrollNewPassword(password, enrollRsp, true);
+    verifyPassword(password, enrollRsp.data, 1, verifyRsp, true);
+
+    ALOGI("Testing Verify of wrong password (expected failure)");
+    password[password.size() - 1] ^= 1;
+    verifyPassword(password, enrollRsp.data, 1, verifyRsp, false);
+
+    ALOGI("LongPassword test done");
+}
+
+/**
  * Ensure we can securely update password (keep the same
  * secure user_id) if we prove we know old password
  */
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayConfiguration.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayConfiguration.aidl
index 791078d..09c42dc 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayConfiguration.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayConfiguration.aidl
@@ -31,7 +31,7 @@
     int height;
 
     /**
-     * Dots per thousand inches.
+     * Dots per inch.
      * If the DPI for a configuration is unavailable or is
      * considered unreliable, the device may set null instead.
      */
diff --git a/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp b/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp
index 03d9041..bae362f 100644
--- a/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp
+++ b/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp
@@ -2223,11 +2223,14 @@
     // Keep optional metadata types below and populate the encoded metadata vec
     // with some arbitrary different metadata because the common gralloc4::decode*()
     // functions do not distinguish between an empty vec and bad value.
-    ASSERT_EQ(NO_ERROR, gralloc4::encodeDataspace(Dataspace::SRGB_LINEAR, &vec));
-    ASSERT_EQ(Error::UNSUPPORTED,
-              mGralloc->set(bufferHandle, gralloc4::MetadataType_Smpte2086, vec));
-    ASSERT_EQ(Error::UNSUPPORTED,
-              mGralloc->set(bufferHandle, gralloc4::MetadataType_Cta861_3, vec));
+    if (base::GetIntProperty("ro.vendor.api_level", __ANDROID_API_FUTURE__) >= __ANDROID_API_T__) {
+        // Some old grallocs shipped with broken validation.
+        ASSERT_EQ(NO_ERROR, gralloc4::encodeDataspace(Dataspace::SRGB_LINEAR, &vec));
+        ASSERT_EQ(Error::UNSUPPORTED,
+                  mGralloc->set(bufferHandle, gralloc4::MetadataType_Smpte2086, vec));
+        ASSERT_EQ(Error::UNSUPPORTED,
+                  mGralloc->set(bufferHandle, gralloc4::MetadataType_Cta861_3, vec));
+    }
 }
 
 /**
diff --git a/power/aidl/vts/VtsHalPowerTargetTest.cpp b/power/aidl/vts/VtsHalPowerTargetTest.cpp
index c2216f8..0976d18 100644
--- a/power/aidl/vts/VtsHalPowerTargetTest.cpp
+++ b/power/aidl/vts/VtsHalPowerTargetTest.cpp
@@ -29,7 +29,6 @@
 namespace aidl::android::hardware::power {
 namespace {
 
-using ::android::base::GetUintProperty;
 using android::hardware::power::Boost;
 using android::hardware::power::IPower;
 using android::hardware::power::IPowerHintSession;
@@ -92,36 +91,33 @@
         DurationWrapper(1000000000L, 4L),
 };
 
-// DEVICEs launching with Android 11 MUST meet the requirements for the
-// target-level=5 compatibility_matrix file.
-const uint64_t kCompatibilityMatrix5ApiLevel = 30;
-
-// DEVICEs launching with Android 13 MUST meet the requirements for the
-// target-level=7 compatibility_matrix file.
-const uint64_t kCompatibilityMatrix7ApiLevel = 33;
-
-// DEVICEs launching with Android 14 MUST meet the requirements for the
-// target-level=8 compatibility_matrix file.
-const uint64_t kCompatibilityMatrix8ApiLevel = 34;
-
-inline bool isUnknownOrUnsupported(const ndk::ScopedAStatus& status) {
-    return status.getStatus() == STATUS_UNKNOWN_TRANSACTION ||
-           status.getExceptionCode() == EX_UNSUPPORTED_OPERATION;
-}
-
 class PowerAidl : public testing::TestWithParam<std::string> {
   public:
     virtual void SetUp() override {
         AIBinder* binder = AServiceManager_waitForService(GetParam().c_str());
         ASSERT_NE(binder, nullptr);
         power = IPower::fromBinder(ndk::SpAIBinder(binder));
-
-        mApiLevel = GetUintProperty<uint64_t>("ro.vendor.api_level", 0);
-        ASSERT_NE(mApiLevel, 0);
+        auto status = power->getInterfaceVersion(&mServiceVersion);
+        ASSERT_TRUE(status.isOk());
     }
 
     std::shared_ptr<IPower> power;
-    uint64_t mApiLevel;
+    int32_t mServiceVersion;
+};
+
+class HintSessionAidl : public PowerAidl {
+  public:
+    virtual void SetUp() override {
+        PowerAidl::SetUp();
+        if (mServiceVersion < 2) {
+            GTEST_SKIP() << "DEVICE not launching with Power V2 and beyond.";
+        }
+
+        auto status = power->createHintSession(getpid(), getuid(), kSelfTids, 16666666L, &mSession);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_NE(nullptr, mSession);
+    }
+    std::shared_ptr<IPowerHintSession> mSession;
 };
 
 TEST_P(PowerAidl, setMode) {
@@ -175,113 +171,80 @@
 }
 
 TEST_P(PowerAidl, getHintSessionPreferredRate) {
-    int64_t rate = -1;
-    auto status = power->getHintSessionPreferredRate(&rate);
-    if (mApiLevel < kCompatibilityMatrix7ApiLevel && !status.isOk()) {
-        EXPECT_TRUE(isUnknownOrUnsupported(status));
-        GTEST_SKIP() << "DEVICE not launching with Android 13 and beyond.";
+    if (mServiceVersion < 2) {
+        GTEST_SKIP() << "DEVICE not launching with Power V2 and beyond.";
     }
-    ASSERT_TRUE(status.isOk());
+
+    int64_t rate = -1;
+    ASSERT_TRUE(power->getHintSessionPreferredRate(&rate).isOk());
     // At least 1ms rate limit from HAL
     ASSERT_GE(rate, 1000000);
 }
 
-TEST_P(PowerAidl, createAndCloseHintSession) {
-    std::shared_ptr<IPowerHintSession> session;
-    auto status = power->createHintSession(getpid(), getuid(), kSelfTids, 16666666L, &session);
-    if (mApiLevel < kCompatibilityMatrix7ApiLevel && !status.isOk()) {
-        EXPECT_TRUE(isUnknownOrUnsupported(status));
-        GTEST_SKIP() << "DEVICE not launching with Android 13 and beyond.";
-    }
-    ASSERT_TRUE(status.isOk());
-    ASSERT_NE(nullptr, session);
-    ASSERT_TRUE(session->pause().isOk());
-    ASSERT_TRUE(session->resume().isOk());
+TEST_P(HintSessionAidl, createAndCloseHintSession) {
+    ASSERT_TRUE(mSession->pause().isOk());
+    ASSERT_TRUE(mSession->resume().isOk());
     // Test normal destroy operation
-    ASSERT_TRUE(session->close().isOk());
-    session.reset();
+    ASSERT_TRUE(mSession->close().isOk());
+    mSession.reset();
 }
 
-TEST_P(PowerAidl, createHintSessionFailed) {
+TEST_P(HintSessionAidl, createHintSessionFailed) {
     std::shared_ptr<IPowerHintSession> session;
     auto status = power->createHintSession(getpid(), getuid(), kEmptyTids, 16666666L, &session);
 
     // Regardless of whether V2 and beyond is supported, the status is always not STATUS_OK.
     ASSERT_FALSE(status.isOk());
-
-    // If device not launching with Android 13 and beyond, check whether it's supported,
-    // if not, skip the test.
-    if (mApiLevel < kCompatibilityMatrix7ApiLevel && isUnknownOrUnsupported(status)) {
-        GTEST_SKIP() << "DEVICE not launching with Android 13 and beyond.";
-    }
     ASSERT_EQ(EX_ILLEGAL_ARGUMENT, status.getExceptionCode());
 }
 
-TEST_P(PowerAidl, updateAndReportDurations) {
-    std::shared_ptr<IPowerHintSession> session;
-    auto status = power->createHintSession(getpid(), getuid(), kSelfTids, 16666666L, &session);
-    if (mApiLevel < kCompatibilityMatrix7ApiLevel && !status.isOk()) {
-        EXPECT_TRUE(isUnknownOrUnsupported(status));
-        GTEST_SKIP() << "DEVICE not launching with Android 13 and beyond.";
-    }
-    ASSERT_TRUE(status.isOk());
-    ASSERT_NE(nullptr, session);
-
-    ASSERT_TRUE(session->updateTargetWorkDuration(16666667LL).isOk());
-    ASSERT_TRUE(session->reportActualWorkDuration(kDurations).isOk());
+TEST_P(HintSessionAidl, updateAndReportDurations) {
+    ASSERT_TRUE(mSession->updateTargetWorkDuration(16666667LL).isOk());
+    ASSERT_TRUE(mSession->reportActualWorkDuration(kDurations).isOk());
 }
 
-TEST_P(PowerAidl, sendSessionHint) {
-    std::shared_ptr<IPowerHintSession> session;
-    auto status = power->createHintSession(getpid(), getuid(), kSelfTids, 16666666L, &session);
-    if (!status.isOk()) {
-        EXPECT_TRUE(isUnknownOrUnsupported(status));
-        return;
+TEST_P(HintSessionAidl, sendSessionHint) {
+    if (mServiceVersion < 4) {
+        GTEST_SKIP() << "DEVICE not launching with Power V4 and beyond.";
     }
+
     for (const auto& sessionHint : kSessionHints) {
-        ASSERT_TRUE(session->sendHint(sessionHint).isOk());
+        ASSERT_TRUE(mSession->sendHint(sessionHint).isOk());
     }
     for (const auto& sessionHint : kInvalidSessionHints) {
-        ASSERT_TRUE(session->sendHint(sessionHint).isOk());
+        ASSERT_TRUE(mSession->sendHint(sessionHint).isOk());
     }
 }
 
-TEST_P(PowerAidl, setThreads) {
-    std::shared_ptr<IPowerHintSession> session;
-    auto status = power->createHintSession(getpid(), getuid(), kSelfTids, 16666666L, &session);
-    if (mApiLevel < kCompatibilityMatrix7ApiLevel && !status.isOk()) {
-        EXPECT_TRUE(isUnknownOrUnsupported(status));
-        GTEST_SKIP() << "DEVICE not launching with Android 13 and beyond.";
+TEST_P(HintSessionAidl, setThreads) {
+    if (mServiceVersion < 4) {
+        GTEST_SKIP() << "DEVICE not launching with Power V4 and beyond.";
     }
-    ASSERT_TRUE(status.isOk());
 
-    status = session->setThreads(kEmptyTids);
-    if (mApiLevel < kCompatibilityMatrix8ApiLevel && isUnknownOrUnsupported(status)) {
-        GTEST_SKIP() << "DEVICE not launching with Android 14 and beyond.";
-    }
+    auto status = mSession->setThreads(kEmptyTids);
     ASSERT_FALSE(status.isOk());
     ASSERT_EQ(EX_ILLEGAL_ARGUMENT, status.getExceptionCode());
 
-    status = session->setThreads(kSelfTids);
-    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(mSession->setThreads(kSelfTids).isOk());
 }
 
 // FIXED_PERFORMANCE mode is required for all devices which ship on Android 11
 // or later
 TEST_P(PowerAidl, hasFixedPerformance) {
-    if (mApiLevel < kCompatibilityMatrix5ApiLevel) {
-        GTEST_SKIP() << "FIXED_PERFORMANCE mode is only required for all devices launching Android "
-                        "11 or later.";
-    }
     bool supported;
     ASSERT_TRUE(power->isModeSupported(Mode::FIXED_PERFORMANCE, &supported).isOk());
     ASSERT_TRUE(supported);
 }
 
 GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(PowerAidl);
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(HintSessionAidl);
+
 INSTANTIATE_TEST_SUITE_P(Power, PowerAidl,
                          testing::ValuesIn(::android::getAidlHalInstanceNames(IPower::descriptor)),
                          ::android::PrintInstanceNameToString);
+INSTANTIATE_TEST_SUITE_P(Power, HintSessionAidl,
+                         testing::ValuesIn(::android::getAidlHalInstanceNames(IPower::descriptor)),
+                         ::android::PrintInstanceNameToString);
 
 }  // namespace
 }  // namespace aidl::android::hardware::power
diff --git a/radio/aidl/vts/radio_network_test.cpp b/radio/aidl/vts/radio_network_test.cpp
index 9af2494..00b3b59 100644
--- a/radio/aidl/vts/radio_network_test.cpp
+++ b/radio/aidl/vts/radio_network_test.cpp
@@ -106,7 +106,7 @@
                  RadioError::REQUEST_NOT_SUPPORTED, RadioError::NO_RESOURCES}));
         if (radioRsp_network->rspInfo.error == RadioError::NONE) {
             // verify we get the value we set
-            ASSERT_EQ(radioRsp_network->networkTypeBitmapResponse, allowedNetworkTypesBitmap);
+            EXPECT_EQ(radioRsp_network->networkTypeBitmapResponse, allowedNetworkTypesBitmap);
         }
     }
 
diff --git a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
index 8a8eaa4..8aef9d9 100644
--- a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
+++ b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
@@ -919,7 +919,9 @@
                     .Authorization(TAG_ATTESTATION_ID_MODEL, "malicious-model");
 
     if (isSecondImeiIdAttestationRequired()) {
-        attestation_id_tags.Authorization(TAG_ATTESTATION_ID_SECOND_IMEI, "invalid-second-imei");
+        // Note: the invalid value here is < 16 bytes long to avoid triggering any implementation
+        // checks on valid IMEI lengths.
+        attestation_id_tags.Authorization(TAG_ATTESTATION_ID_SECOND_IMEI, "invalid-imei2");
     }
     vector<uint8_t> key_blob;
     vector<KeyCharacteristics> key_characteristics;
diff --git a/security/keymint/aidl/vts/functional/AuthTest.cpp b/security/keymint/aidl/vts/functional/AuthTest.cpp
index 290e8fc..ecaee11 100644
--- a/security/keymint/aidl/vts/functional/AuthTest.cpp
+++ b/security/keymint/aidl/vts/functional/AuthTest.cpp
@@ -453,8 +453,18 @@
     vector<uint8_t> keyblob;
     vector<KeyCharacteristics> key_characteristics;
     vector<Certificate> cert_chain;
-    ASSERT_EQ(ErrorCode::OK,
-              GenerateKey(builder, std::nullopt, &keyblob, &key_characteristics, &cert_chain));
+    auto result = GenerateKey(builder, std::nullopt, &keyblob, &key_characteristics, &cert_chain);
+    if (SecLevel() == SecurityLevel::STRONGBOX) {
+        if (result == ErrorCode::ATTESTATION_KEYS_NOT_PROVISIONED) {
+            result = GenerateKeyWithSelfSignedAttestKey(AuthorizationSetBuilder()
+                                                                .EcdsaKey(EcCurve::P_256)
+                                                                .AttestKey()
+                                                                .SetDefaultValidity(),
+                                                        builder, &keyblob, &key_characteristics,
+                                                        &cert_chain);
+        }
+    }
+    ASSERT_EQ(ErrorCode::OK, result);
 
     // Verify first user to get a HAT that should work.
     const uint64_t challenge = 42;
diff --git a/sensors/common/vts/utils/GrallocWrapper.cpp b/sensors/common/vts/utils/GrallocWrapper.cpp
index e6e0888..a15e7fe 100644
--- a/sensors/common/vts/utils/GrallocWrapper.cpp
+++ b/sensors/common/vts/utils/GrallocWrapper.cpp
@@ -124,7 +124,8 @@
 
   private:
     static constexpr uint64_t kBufferUsage =
-            static_cast<uint64_t>(BufferUsage::SENSOR_DIRECT_DATA | BufferUsage::CPU_READ_OFTEN);
+            static_cast<uint64_t>(BufferUsage::SENSOR_DIRECT_DATA | BufferUsage::CPU_READ_OFTEN |
+                                  BufferUsage::CPU_WRITE_RARELY);
     AllocatorWrapperT<AllocatorT> mAllocator;
     sp<MapperT> mMapper;
 
diff --git a/uwb/aidl/aidl_api/android.hardware.uwb.fira_android/current/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl b/uwb/aidl/aidl_api/android.hardware.uwb.fira_android/current/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl
index ff9c247..21951b6 100644
--- a/uwb/aidl/aidl_api/android.hardware.uwb.fira_android/current/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl
+++ b/uwb/aidl/aidl_api/android.hardware.uwb.fira_android/current/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl
@@ -45,6 +45,7 @@
   CCC_SUPPORTED_RAN_MULTIPLIER = 0xA7,
   CCC_SUPPORTED_MAX_RANGING_SESSION_NUMBER = 0xA8,
   CCC_SUPPORTED_MIN_UWB_INITIATION_TIME_MS = 0xA9,
+  CCC_PRIORITIZED_CHANNEL_LIST = 0xAA,
   RADAR_SUPPORT = 0xB0,
   SUPPORTED_AOA_RESULT_REQ_ANTENNA_INTERLEAVING = 0xE3,
   SUPPORTED_MIN_RANGING_INTERVAL_MS = 0xE4,
diff --git a/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl b/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl
index ceef1be..2141b5a 100644
--- a/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl
+++ b/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorCapabilityTlvTypes.aidl
@@ -149,6 +149,11 @@
      */
     CCC_SUPPORTED_MIN_UWB_INITIATION_TIME_MS = 0xA9,
 
+    /**
+     * Byte array of channels supported by the device, ordered by priority from highest to lowest.
+     */
+    CCC_PRIORITIZED_CHANNEL_LIST = 0xAA,
+
     /*********************************************
      * RADAR specific
      ********************************************/