diff --git a/audio/aidl/TEST_MAPPING b/audio/aidl/TEST_MAPPING
index e325001..d848af9 100644
--- a/audio/aidl/TEST_MAPPING
+++ b/audio/aidl/TEST_MAPPING
@@ -78,6 +78,12 @@
           "include-filter": "android.virtualdevice.cts.VirtualAudioTest"
         }
       ]
+    },
+    {
+      "name": "VtsHalBassBoostTargetTest"
+    },
+    {
+      "name": "VtsHalDynamicsProcessingTest"
     }
   ]
 }
diff --git a/audio/aidl/default/Module.cpp b/audio/aidl/default/Module.cpp
index 94aa4dc..6bbdb1a 100644
--- a/audio/aidl/default/Module.cpp
+++ b/audio/aidl/default/Module.cpp
@@ -1169,9 +1169,12 @@
     if (in_requested.ext.getTag() != AudioPortExt::Tag::unspecified) {
         if (in_requested.ext.getTag() == out_suggested->ext.getTag()) {
             if (out_suggested->ext.getTag() == AudioPortExt::Tag::mix) {
-                // 'AudioMixPortExt.handle' is set by the client, copy from in_requested
-                out_suggested->ext.get<AudioPortExt::Tag::mix>().handle =
-                        in_requested.ext.get<AudioPortExt::Tag::mix>().handle;
+                // 'AudioMixPortExt.handle' and '.usecase' are set by the client,
+                // copy from in_requested.
+                const auto& src = in_requested.ext.get<AudioPortExt::Tag::mix>();
+                auto& dst = out_suggested->ext.get<AudioPortExt::Tag::mix>();
+                dst.handle = src.handle;
+                dst.usecase = src.usecase;
             }
         } else {
             LOG(WARNING) << __func__ << ": requested ext tag "
diff --git a/audio/aidl/default/Stream.cpp b/audio/aidl/default/Stream.cpp
index 807348f..697ff0d 100644
--- a/audio/aidl/default/Stream.cpp
+++ b/audio/aidl/default/Stream.cpp
@@ -21,6 +21,7 @@
 #include <Utils.h>
 #include <android-base/logging.h>
 #include <android/binder_ibinder_platform.h>
+#include <cutils/properties.h>
 #include <utils/SystemClock.h>
 #include <utils/Trace.h>
 
@@ -652,16 +653,34 @@
          isBitPositionFlagSet(flags.template get<AudioIoFlags::Tag::input>(),
                               AudioInputFlags::FAST)) ||
         (flags.getTag() == AudioIoFlags::Tag::output &&
-         isBitPositionFlagSet(flags.template get<AudioIoFlags::Tag::output>(),
-                              AudioOutputFlags::FAST))) {
+         (isBitPositionFlagSet(flags.template get<AudioIoFlags::Tag::output>(),
+                               AudioOutputFlags::FAST) ||
+          isBitPositionFlagSet(flags.template get<AudioIoFlags::Tag::output>(),
+                               AudioOutputFlags::SPATIALIZER)))) {
         // 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).
+            constexpr int32_t kRTPriorityMin = 1;  // SchedulingPolicyService.PRIORITY_MIN (Java).
+            constexpr int32_t kRTPriorityMax = 3;  // SchedulingPolicyService.PRIORITY_MAX (Java).
+            int priorityBoost = kRTPriorityMax;
+            if (flags.getTag() == AudioIoFlags::Tag::output &&
+                isBitPositionFlagSet(flags.template get<AudioIoFlags::Tag::output>(),
+                                     AudioOutputFlags::SPATIALIZER)) {
+                const int32_t sptPrio =
+                        property_get_int32("audio.spatializer.priority", kRTPriorityMin);
+                if (sptPrio >= kRTPriorityMin && sptPrio <= kRTPriorityMax) {
+                    priorityBoost = sptPrio;
+                } else {
+                    LOG(WARNING) << __func__ << ": invalid spatializer priority: " << sptPrio;
+                    return ndk::ScopedAStatus::ok();
+                }
+            }
+            struct sched_param param = {
+                    .sched_priority = priorityBoost,
+            };
             if (sched_setscheduler(workerTid, SCHED_FIFO | SCHED_RESET_ON_FORK, &param) != 0) {
-                PLOG(WARNING) << __func__ << ": failed to set FIFO scheduler for a fast thread";
+                PLOG(WARNING) << __func__ << ": failed to set FIFO scheduler and priority";
             }
         } else {
             LOG(WARNING) << __func__ << ": invalid worker tid: " << workerTid;
diff --git a/audio/aidl/default/apex/com.android.hardware.audio/Android.bp b/audio/aidl/default/apex/com.android.hardware.audio/Android.bp
index ee7e46e..ee92512 100644
--- a/audio/aidl/default/apex/com.android.hardware.audio/Android.bp
+++ b/audio/aidl/default/apex/com.android.hardware.audio/Android.bp
@@ -46,5 +46,6 @@
     prebuilts: [
         "android.hardware.audio.service-aidl.example.rc",
         "android.hardware.audio.service-aidl.xml",
+        "android.hardware.bluetooth.audio.xml",
     ],
 }
diff --git a/audio/aidl/default/audio_effects_config.xml b/audio/aidl/default/audio_effects_config.xml
index 827ff80..e859a0e 100644
--- a/audio/aidl/default/audio_effects_config.xml
+++ b/audio/aidl/default/audio_effects_config.xml
@@ -72,10 +72,7 @@
 
     <effects>
         <effect name="automatic_gain_control_v2" library="pre_processing" uuid="89f38e65-d4d2-4d64-ad0e-2b3e799ea886"/>
-        <effectProxy name="bassboost" uuid="14804144-a5ee-4d24-aa88-0002a5d5c51b">
-            <libsw library="bassboostsw" uuid="fa8181f2-588b-11ed-9b6a-0242ac120002"/>
-            <libsw library="bundle" uuid="8631f300-72e2-11df-b57e-0002a5d5c51b"/>
-        </effectProxy>
+        <effect name="bassboost" library="bundle" uuid="8631f300-72e2-11df-b57e-0002a5d5c51b"/>
         <effect name="downmix" library="downmix" uuid="93f04452-e4fe-41cc-91f9-e475b6d1d69f"/>
         <effect name="dynamics_processing" library="dynamics_processing" uuid="e0e6539b-1781-7261-676f-6d7573696340"/>
         <effect name="haptic_generator" library="haptic_generator" uuid="97c4acd1-8b82-4f2f-832e-c2fe5d7a9931"/>
@@ -86,16 +83,10 @@
         <effect name="reverb_env_ins" library="reverb" uuid="c7a511a0-a3bb-11df-860e-0002a5d5c51b"/>
         <effect name="reverb_pre_aux" library="reverb" uuid="f29a1400-a3bb-11df-8ddc-0002a5d5c51b"/>
         <effect name="reverb_pre_ins" library="reverb" uuid="172cdf00-a3bc-11df-a72f-0002a5d5c51b"/>
-        <effectProxy name="virtualizer" uuid="d3467faa-acc7-4d34-acaf-0002a5d5c51b">
-            <libsw library="virtualizersw" uuid="fa819d86-588b-11ed-9b6a-0242ac120002"/>
-            <libsw library="bundle" uuid="1d4033c0-8557-11df-9f2d-0002a5d5c51b"/>
-        </effectProxy>
+        <effect name="virtualizer" library="bundle" uuid="1d4033c0-8557-11df-9f2d-0002a5d5c51b"/>
         <effect name="visualizer" library="visualizer" uuid="d069d9e0-8329-11df-9168-0002a5d5c51b"/>
         <effect name="volume" library="bundle" uuid="119341a0-8469-11df-81f9-0002a5d5c51b"/>
-        <effectProxy name="equalizer" uuid="c8e70ecd-48ca-456e-8a4f-0002a5d5c51b">
-            <libsw library="equalizersw" uuid="0bed4300-847d-11df-bb17-0002a5d5c51b"/>
-            <libsw library="bundle" uuid="ce772f20-847d-11df-bb17-0002a5d5c51b"/>
-        </effectProxy>
+        <effect name="equalizer" library="bundle" uuid="ce772f20-847d-11df-bb17-0002a5d5c51b"/>
         <effect name="extension_effect" library="extensioneffect" uuid="fa81dd00-588b-11ed-9b6a-0242ac120002" type="fa81de0e-588b-11ed-9b6a-0242ac120002"/>
         <effect name="acoustic_echo_canceler" library="pre_processing" uuid="bb392ec0-8d4d-11e0-a896-0002a5d5c51b"/>
         <effect name="noise_suppression" library="pre_processing" uuid="c06c8400-8e06-11e0-9cb6-0002a5d5c51b"/>
diff --git a/audio/aidl/default/bluetooth/StreamBluetooth.cpp b/audio/aidl/default/bluetooth/StreamBluetooth.cpp
index 77e48df..f22b7a9 100644
--- a/audio/aidl/default/bluetooth/StreamBluetooth.cpp
+++ b/audio/aidl/default/bluetooth/StreamBluetooth.cpp
@@ -16,16 +16,13 @@
 
 #include <algorithm>
 
-#define ATRACE_TAG ATRACE_TAG_AUDIO
 #define LOG_TAG "AHAL_StreamBluetooth"
 #include <Utils.h>
 #include <android-base/logging.h>
 #include <audio_utils/clock.h>
-#include <utils/Trace.h>
 
 #include "core-impl/StreamBluetooth.h"
 
-using aidl::android::hardware::audio::common::frameCountFromDurationUs;
 using aidl::android::hardware::audio::common::SinkMetadata;
 using aidl::android::hardware::audio::common::SourceMetadata;
 using aidl::android::hardware::audio::core::VendorParameter;
@@ -67,8 +64,6 @@
                                        : (mIsInput ? kBluetoothDefaultInputBufferMs
                                                    : kBluetoothDefaultOutputBufferMs) *
                                                  1000),
-      mPreferredFrameCount(
-              frameCountFromDurationUs(mPreferredDataIntervalUs, pcmConfig.sampleRateHz)),
       mBtDeviceProxy(btDeviceProxy) {}
 
 ::android::status_t StreamBluetooth::init() {
@@ -77,6 +72,7 @@
         // This is a normal situation in VTS tests.
         LOG(INFO) << __func__ << ": no BT HAL proxy, stream is non-functional";
     }
+    LOG(INFO) << __func__ << ": preferred data interval (us): " << mPreferredDataIntervalUs;
     return ::android::OK;
 }
 
@@ -108,12 +104,10 @@
         LOG(ERROR) << __func__ << ": state= " << mBtDeviceProxy->getState() << " failed to start";
         return -EIO;
     }
-    const size_t fc = std::min(frameCount, mPreferredFrameCount);
-    const size_t bytesToTransfer = fc * mFrameSizeBytes;
+    const size_t bytesToTransfer = frameCount * mFrameSizeBytes;
     const size_t bytesTransferred = mIsInput ? mBtDeviceProxy->readData(buffer, bytesToTransfer)
                                              : mBtDeviceProxy->writeData(buffer, bytesToTransfer);
     *actualFrameCount = bytesTransferred / mFrameSizeBytes;
-    ATRACE_INT("BTdropped", bytesToTransfer - bytesTransferred);
     PresentationPosition presentation_position;
     if (!mBtDeviceProxy->getPresentationPosition(presentation_position)) {
         presentation_position.remoteDeviceAudioDelayNanos =
diff --git a/audio/aidl/default/include/core-impl/Module.h b/audio/aidl/default/include/core-impl/Module.h
index ce71d70..d6e8905 100644
--- a/audio/aidl/default/include/core-impl/Module.h
+++ b/audio/aidl/default/include/core-impl/Module.h
@@ -211,9 +211,12 @@
         const int32_t rawSizeFrames =
                 aidl::android::hardware::audio::common::frameCountFromDurationMs(latencyMs,
                                                                                  sampleRateHz);
-        if (latencyMs >= 5) return rawSizeFrames;
+        // Round up to nearest 16 frames since in the framework this is the size of a mixer burst.
+        const int32_t multipleOf16 = (rawSizeFrames + 15) & ~15;
+        if (multipleOf16 <= 512) return multipleOf16;
+        // Larger buffers should use powers of 2.
         int32_t powerOf2 = 1;
-        while (powerOf2 < rawSizeFrames) powerOf2 <<= 1;
+        while (powerOf2 < multipleOf16) powerOf2 <<= 1;
         return powerOf2;
     }
 
diff --git a/audio/aidl/default/include/core-impl/StreamBluetooth.h b/audio/aidl/default/include/core-impl/StreamBluetooth.h
index 35c3183..7f4239c 100644
--- a/audio/aidl/default/include/core-impl/StreamBluetooth.h
+++ b/audio/aidl/default/include/core-impl/StreamBluetooth.h
@@ -63,7 +63,6 @@
     const std::weak_ptr<IBluetoothA2dp> mBluetoothA2dp;
     const std::weak_ptr<IBluetoothLe> mBluetoothLe;
     const size_t mPreferredDataIntervalUs;
-    const size_t mPreferredFrameCount;
     mutable std::mutex mLock;
     // The lock is also used to serialize calls to the proxy.
     std::shared_ptr<::android::bluetooth::audio::aidl::BluetoothAudioPortAidl> mBtDeviceProxy
diff --git a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
index fa4135d..2376ed9 100644
--- a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
+++ b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
@@ -136,10 +136,12 @@
     mCurrentRoute->exitStandby(mIsInput);
     RETURN_STATUS_IF_ERROR(mIsInput ? inRead(buffer, frameCount, actualFrameCount)
                                     : outWrite(buffer, frameCount, actualFrameCount));
+    mFramesSinceStart += *actualFrameCount;
+    if (!mIsInput) return ::android::OK;
+    // Only input streams need to block, for output this is implemented by MonoPipe.
     const long bufferDurationUs =
             (*actualFrameCount) * MICROS_PER_SECOND / mContext.getSampleRate();
     const auto totalDurationUs = (::android::uptimeNanos() - mStartTimeNs) / NANOS_PER_MICROSECOND;
-    mFramesSinceStart += *actualFrameCount;
     const long totalOffsetUs =
             mFramesSinceStart * MICROS_PER_SECOND / mContext.getSampleRate() - totalDurationUs;
     LOG(VERBOSE) << __func__ << ": totalOffsetUs " << totalOffsetUs;
@@ -275,8 +277,9 @@
     char* buff = (char*)buffer;
     size_t actuallyRead = 0;
     long remainingFrames = frameCount;
-    const int64_t deadlineTimeNs = ::android::uptimeNanos() +
-                                   getDelayInUsForFrameCount(frameCount) * NANOS_PER_MICROSECOND;
+    const int64_t deadlineTimeNs =
+            ::android::uptimeNanos() +
+            getDelayInUsForFrameCount(frameCount) * NANOS_PER_MICROSECOND / 2;
     while (remainingFrames > 0) {
         ssize_t framesRead = source->read(buff, remainingFrames);
         LOG(VERBOSE) << __func__ << ": frames read " << framesRead;
diff --git a/bluetooth/audio/aidl/default/Android.bp b/bluetooth/audio/aidl/default/Android.bp
index 69db1b3..af6bf86 100644
--- a/bluetooth/audio/aidl/default/Android.bp
+++ b/bluetooth/audio/aidl/default/Android.bp
@@ -40,3 +40,10 @@
         "libbluetooth_audio_session_aidl",
     ],
 }
+
+prebuilt_etc {
+    name: "android.hardware.bluetooth.audio.xml",
+    src: "bluetooth_audio.xml",
+    sub_dir: "vintf",
+    installable: false,
+}
diff --git a/media/bufferpool/aidl/default/BufferPool.cpp b/media/bufferpool/aidl/default/BufferPool.cpp
index ed4574f..57716db 100644
--- a/media/bufferpool/aidl/default/BufferPool.cpp
+++ b/media/bufferpool/aidl/default/BufferPool.cpp
@@ -102,11 +102,11 @@
         if (it->isInvalidated(bufferId)) {
             uint32_t msgId = 0;
             if (it->mNeedsAck) {
-                msgId = ++mInvalidationId;
-                if (msgId == 0) {
-                    // wrap happens
-                    msgId = ++mInvalidationId;
+                if (mInvalidationId == UINT_MAX) {
+                    // wrap happens;
+                    mInvalidationId = 0;
                 }
+                msgId = ++mInvalidationId;
             }
             channel.postInvalidation(msgId, it->mFrom, it->mTo);
             it = mPendings.erase(it);
@@ -125,11 +125,11 @@
         const std::shared_ptr<Accessor> &impl) {
         uint32_t msgId = 0;
     if (needsAck) {
-        msgId = ++mInvalidationId;
-        if (msgId == 0) {
-            // wrap happens
-            msgId = ++mInvalidationId;
+        if (mInvalidationId == UINT_MAX) {
+            //wrap happens
+            mInvalidationId = 0;
         }
+        msgId = ++mInvalidationId;
     }
     ALOGV("bufferpool2 invalidation requested and queued");
     if (left == 0) {
diff --git a/media/bufferpool/aidl/default/BufferStatus.cpp b/media/bufferpool/aidl/default/BufferStatus.cpp
index 19caa1e..fecbe3f 100644
--- a/media/bufferpool/aidl/default/BufferStatus.cpp
+++ b/media/bufferpool/aidl/default/BufferStatus.cpp
@@ -26,8 +26,17 @@
 
 using aidl::android::hardware::media::bufferpool2::BufferStatus;
 
+uint32_t wrappedMinus(uint32_t a, uint32_t b) {
+    if (a >= b) {
+        return a - b;
+    } else {
+        return ~(b - a) + 1;
+    }
+}
+
 bool isMessageLater(uint32_t curMsgId, uint32_t prevMsgId) {
-    return curMsgId != prevMsgId && curMsgId - prevMsgId < prevMsgId - curMsgId;
+    return curMsgId != prevMsgId &&
+            wrappedMinus(curMsgId, prevMsgId) < wrappedMinus(prevMsgId, curMsgId);
 }
 
 bool isBufferInRange(BufferId from, BufferId to, BufferId bufferId) {