diff --git a/audio/2.0/default/Android.mk b/audio/2.0/default/Android.mk
index 970b65e..12713d3 100644
--- a/audio/2.0/default/Android.mk
+++ b/audio/2.0/default/Android.mk
@@ -16,45 +16,6 @@
 
 LOCAL_PATH := $(call my-dir)
 
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.audio@2.0-impl
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_SRC_FILES := \
-    Conversions.cpp \
-    Device.cpp \
-    DevicesFactory.cpp \
-    ParametersUtil.cpp \
-    PrimaryDevice.cpp \
-    Stream.cpp \
-    StreamIn.cpp \
-    StreamOut.cpp \
-
-LOCAL_CFLAGS := -Wall -Werror
-
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libfmq \
-    libhardware \
-    libhidlbase \
-    libhidltransport \
-    liblog \
-    libutils \
-    android.hardware.audio@2.0 \
-    android.hardware.audio.common@2.0 \
-    android.hardware.audio.common@2.0-util \
-
-LOCAL_HEADER_LIBRARIES := \
-    libaudioclient_headers \
-    libaudio_system_headers \
-    libhardware_headers \
-    libmedia_headers \
-
-LOCAL_WHOLE_STATIC_LIBRARIES := libmedia_helper
-
-include $(BUILD_SHARED_LIBRARY)
-
 #
 # Service
 #
@@ -81,6 +42,8 @@
     android.hardware.soundtrigger@2.0 \
     android.hardware.soundtrigger@2.1
 
+# Can not switch to Android.bp until AUDIOSERVER_MULTILIB
+# is deprecated as build config variable are not supported
 ifeq ($(strip $(AUDIOSERVER_MULTILIB)),)
 LOCAL_MULTILIB := 32
 else
diff --git a/audio/2.0/default/Conversions.cpp b/audio/2.0/default/Conversions.cpp
deleted file mode 100644
index e669185..0000000
--- a/audio/2.0/default/Conversions.cpp
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Copyright (C) 2016 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 <stdio.h>
-
-#include "Conversions.h"
-
-namespace android {
-namespace hardware {
-namespace audio {
-namespace V2_0 {
-namespace implementation {
-
-std::string deviceAddressToHal(const DeviceAddress& address) {
-    // HAL assumes that the address is NUL-terminated.
-    char halAddress[AUDIO_DEVICE_MAX_ADDRESS_LEN];
-    memset(halAddress, 0, sizeof(halAddress));
-    uint32_t halDevice = static_cast<uint32_t>(address.device);
-    const bool isInput = (halDevice & AUDIO_DEVICE_BIT_IN) != 0;
-    if (isInput) halDevice &= ~AUDIO_DEVICE_BIT_IN;
-    if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != 0)
-            || (isInput && (halDevice & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) != 0)) {
-        snprintf(halAddress, sizeof(halAddress),
-                "%02X:%02X:%02X:%02X:%02X:%02X",
-                address.address.mac[0], address.address.mac[1], address.address.mac[2],
-                address.address.mac[3], address.address.mac[4], address.address.mac[5]);
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_IP) != 0)
-            || (isInput && (halDevice & AUDIO_DEVICE_IN_IP) != 0)) {
-        snprintf(halAddress, sizeof(halAddress),
-                "%d.%d.%d.%d",
-                address.address.ipv4[0], address.address.ipv4[1],
-                address.address.ipv4[2], address.address.ipv4[3]);
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_ALL_USB) != 0)
-            || (isInput && (halDevice & AUDIO_DEVICE_IN_ALL_USB) != 0)) {
-        snprintf(halAddress, sizeof(halAddress),
-                "card=%d;device=%d",
-                address.address.alsa.card, address.address.alsa.device);
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_BUS) != 0)
-            || (isInput && (halDevice & AUDIO_DEVICE_IN_BUS) != 0)) {
-        snprintf(halAddress, sizeof(halAddress),
-                "%s", address.busAddress.c_str());
-    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_REMOTE_SUBMIX)) != 0
-            || (isInput && (halDevice & AUDIO_DEVICE_IN_REMOTE_SUBMIX) != 0)) {
-        snprintf(halAddress, sizeof(halAddress),
-                "%s", address.rSubmixAddress.c_str());
-    }
-    return halAddress;
-}
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
diff --git a/audio/2.0/default/Device.h b/audio/2.0/default/Device.h
deleted file mode 100644
index 7738361..0000000
--- a/audio/2.0/default/Device.h
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright (C) 2016 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.
- */
-
-#ifndef ANDROID_HARDWARE_AUDIO_V2_0_DEVICE_H
-#define ANDROID_HARDWARE_AUDIO_V2_0_DEVICE_H
-
-#include <memory>
-
-#include <media/AudioParameter.h>
-#include <hardware/audio.h>
-
-#include <android/hardware/audio/2.0/IDevice.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
-
-#include "ParametersUtil.h"
-
-namespace android {
-namespace hardware {
-namespace audio {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioConfig;
-using ::android::hardware::audio::common::V2_0::AudioHwSync;
-using ::android::hardware::audio::common::V2_0::AudioInputFlag;
-using ::android::hardware::audio::common::V2_0::AudioOutputFlag;
-using ::android::hardware::audio::common::V2_0::AudioPatchHandle;
-using ::android::hardware::audio::common::V2_0::AudioPort;
-using ::android::hardware::audio::common::V2_0::AudioPortConfig;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::V2_0::DeviceAddress;
-using ::android::hardware::audio::V2_0::IDevice;
-using ::android::hardware::audio::V2_0::IStreamIn;
-using ::android::hardware::audio::V2_0::IStreamOut;
-using ::android::hardware::audio::V2_0::ParameterValue;
-using ::android::hardware::audio::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct Device : public IDevice, public ParametersUtil {
-    explicit Device(audio_hw_device_t* device);
-
-    // Methods from ::android::hardware::audio::V2_0::IDevice follow.
-    Return<Result> initCheck()  override;
-    Return<Result> setMasterVolume(float volume)  override;
-    Return<void> getMasterVolume(getMasterVolume_cb _hidl_cb)  override;
-    Return<Result> setMicMute(bool mute)  override;
-    Return<void> getMicMute(getMicMute_cb _hidl_cb)  override;
-    Return<Result> setMasterMute(bool mute)  override;
-    Return<void> getMasterMute(getMasterMute_cb _hidl_cb)  override;
-    Return<void> getInputBufferSize(
-            const AudioConfig& config, getInputBufferSize_cb _hidl_cb)  override;
-    Return<void> openOutputStream(
-            int32_t ioHandle,
-            const DeviceAddress& device,
-            const AudioConfig& config,
-            AudioOutputFlag flags,
-            openOutputStream_cb _hidl_cb)  override;
-    Return<void> openInputStream(
-            int32_t ioHandle,
-            const DeviceAddress& device,
-            const AudioConfig& config,
-            AudioInputFlag flags,
-            AudioSource source,
-            openInputStream_cb _hidl_cb)  override;
-    Return<bool> supportsAudioPatches()  override;
-    Return<void> createAudioPatch(
-            const hidl_vec<AudioPortConfig>& sources,
-            const hidl_vec<AudioPortConfig>& sinks,
-            createAudioPatch_cb _hidl_cb)  override;
-    Return<Result> releaseAudioPatch(int32_t patch)  override;
-    Return<void> getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb)  override;
-    Return<Result> setAudioPortConfig(const AudioPortConfig& config)  override;
-    Return<AudioHwSync> getHwAvSync()  override;
-    Return<Result> setScreenState(bool turnedOn)  override;
-    Return<void> getParameters(
-            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
-    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
-    Return<void> debugDump(const hidl_handle& fd)  override;
-
-    // Utility methods for extending interfaces.
-    Result analyzeStatus(const char* funcName, int status);
-    void closeInputStream(audio_stream_in_t* stream);
-    void closeOutputStream(audio_stream_out_t* stream);
-    audio_hw_device_t* device() const { return mDevice; }
-
-  private:
-    audio_hw_device_t *mDevice;
-
-    virtual ~Device();
-
-    // Methods from ParametersUtil.
-    char* halGetParameters(const char* keys) override;
-    int halSetParameters(const char* keysAndValues) override;
-
-    uint32_t version() const { return mDevice->common.version; }
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_V2_0_DEVICE_H
diff --git a/audio/2.0/default/PrimaryDevice.h b/audio/2.0/default/PrimaryDevice.h
deleted file mode 100644
index d95511b..0000000
--- a/audio/2.0/default/PrimaryDevice.h
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2016 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.
- */
-
-#ifndef ANDROID_HARDWARE_AUDIO_V2_0_PRIMARYDEVICE_H
-#define ANDROID_HARDWARE_AUDIO_V2_0_PRIMARYDEVICE_H
-
-#include <android/hardware/audio/2.0/IPrimaryDevice.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
-
-#include "Device.h"
-
-namespace android {
-namespace hardware {
-namespace audio {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioConfig;
-using ::android::hardware::audio::common::V2_0::AudioInputFlag;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioOutputFlag;
-using ::android::hardware::audio::common::V2_0::AudioPort;
-using ::android::hardware::audio::common::V2_0::AudioPortConfig;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::V2_0::DeviceAddress;
-using ::android::hardware::audio::V2_0::IDevice;
-using ::android::hardware::audio::V2_0::IPrimaryDevice;
-using ::android::hardware::audio::V2_0::IStreamIn;
-using ::android::hardware::audio::V2_0::IStreamOut;
-using ::android::hardware::audio::V2_0::ParameterValue;
-using ::android::hardware::audio::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct PrimaryDevice : public IPrimaryDevice {
-    explicit PrimaryDevice(audio_hw_device_t* device);
-
-    // Methods from ::android::hardware::audio::V2_0::IDevice follow.
-    Return<Result> initCheck()  override;
-    Return<Result> setMasterVolume(float volume)  override;
-    Return<void> getMasterVolume(getMasterVolume_cb _hidl_cb)  override;
-    Return<Result> setMicMute(bool mute)  override;
-    Return<void> getMicMute(getMicMute_cb _hidl_cb)  override;
-    Return<Result> setMasterMute(bool mute)  override;
-    Return<void> getMasterMute(getMasterMute_cb _hidl_cb)  override;
-    Return<void> getInputBufferSize(
-            const AudioConfig& config, getInputBufferSize_cb _hidl_cb)  override;
-    Return<void> openOutputStream(
-            int32_t ioHandle,
-            const DeviceAddress& device,
-            const AudioConfig& config,
-            AudioOutputFlag flags,
-            openOutputStream_cb _hidl_cb)  override;
-    Return<void> openInputStream(
-            int32_t ioHandle,
-            const DeviceAddress& device,
-            const AudioConfig& config,
-            AudioInputFlag flags,
-            AudioSource source,
-            openInputStream_cb _hidl_cb)  override;
-    Return<bool> supportsAudioPatches()  override;
-    Return<void> createAudioPatch(
-            const hidl_vec<AudioPortConfig>& sources,
-            const hidl_vec<AudioPortConfig>& sinks,
-            createAudioPatch_cb _hidl_cb)  override;
-    Return<Result> releaseAudioPatch(int32_t patch)  override;
-    Return<void> getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb)  override;
-    Return<Result> setAudioPortConfig(const AudioPortConfig& config)  override;
-    Return<AudioHwSync> getHwAvSync()  override;
-    Return<Result> setScreenState(bool turnedOn)  override;
-    Return<void> getParameters(
-            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
-    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
-    Return<void> debugDump(const hidl_handle& fd)  override;
-
-    // Methods from ::android::hardware::audio::V2_0::IPrimaryDevice follow.
-    Return<Result> setVoiceVolume(float volume)  override;
-    Return<Result> setMode(AudioMode mode)  override;
-    Return<void> getBtScoNrecEnabled(getBtScoNrecEnabled_cb _hidl_cb)  override;
-    Return<Result> setBtScoNrecEnabled(bool enabled)  override;
-    Return<void> getBtScoWidebandEnabled(getBtScoWidebandEnabled_cb _hidl_cb)  override;
-    Return<Result> setBtScoWidebandEnabled(bool enabled)  override;
-    Return<void> getTtyMode(getTtyMode_cb _hidl_cb)  override;
-    Return<Result> setTtyMode(IPrimaryDevice::TtyMode mode)  override;
-    Return<void> getHacEnabled(getHacEnabled_cb _hidl_cb)  override;
-    Return<Result> setHacEnabled(bool enabled)  override;
-
-  private:
-    sp<Device> mDevice;
-
-    virtual ~PrimaryDevice();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_V2_0_PRIMARYDEVICE_H
diff --git a/audio/2.0/default/StreamIn.h b/audio/2.0/default/StreamIn.h
deleted file mode 100644
index 950d68f..0000000
--- a/audio/2.0/default/StreamIn.h
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2016 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.
- */
-
-#ifndef ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
-#define ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
-
-#include <atomic>
-#include <memory>
-
-#include <android/hardware/audio/2.0/IStreamIn.h>
-#include <hidl/MQDescriptor.h>
-#include <fmq/EventFlag.h>
-#include <fmq/MessageQueue.h>
-#include <hidl/Status.h>
-#include <utils/Thread.h>
-
-#include "Device.h"
-#include "Stream.h"
-
-namespace android {
-namespace hardware {
-namespace audio {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioChannelMask;
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioFormat;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::V2_0::DeviceAddress;
-using ::android::hardware::audio::V2_0::IStream;
-using ::android::hardware::audio::V2_0::IStreamIn;
-using ::android::hardware::audio::V2_0::ParameterValue;
-using ::android::hardware::audio::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct StreamIn : public IStreamIn {
-    typedef MessageQueue<ReadParameters, kSynchronizedReadWrite> CommandMQ;
-    typedef MessageQueue<uint8_t, kSynchronizedReadWrite> DataMQ;
-    typedef MessageQueue<ReadStatus, kSynchronizedReadWrite> StatusMQ;
-
-    StreamIn(const sp<Device>& device, audio_stream_in_t* stream);
-
-    // Methods from ::android::hardware::audio::V2_0::IStream follow.
-    Return<uint64_t> getFrameSize()  override;
-    Return<uint64_t> getFrameCount()  override;
-    Return<uint64_t> getBufferSize()  override;
-    Return<uint32_t> getSampleRate()  override;
-    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
-    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
-    Return<AudioChannelMask> getChannelMask()  override;
-    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
-    Return<Result> setChannelMask(AudioChannelMask mask)  override;
-    Return<AudioFormat> getFormat()  override;
-    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
-    Return<Result> setFormat(AudioFormat format)  override;
-    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
-    Return<Result> addEffect(uint64_t effectId)  override;
-    Return<Result> removeEffect(uint64_t effectId)  override;
-    Return<Result> standby()  override;
-    Return<AudioDevice> getDevice()  override;
-    Return<Result> setDevice(const DeviceAddress& address)  override;
-    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
-    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
-    Return<void> getParameters(
-            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
-    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
-    Return<void> debugDump(const hidl_handle& fd)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::V2_0::IStreamIn follow.
-    Return<void> getAudioSource(getAudioSource_cb _hidl_cb)  override;
-    Return<Result> setGain(float gain)  override;
-    Return<void> prepareForReading(
-            uint32_t frameSize, uint32_t framesCount, prepareForReading_cb _hidl_cb)  override;
-    Return<uint32_t> getInputFramesLost()  override;
-    Return<void> getCapturePosition(getCapturePosition_cb _hidl_cb)  override;
-    Return<Result> start() override;
-    Return<Result> stop() override;
-    Return<void> createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) override;
-    Return<void> getMmapPosition(getMmapPosition_cb _hidl_cb) override;
-
-    static Result getCapturePositionImpl(
-            audio_stream_in_t *stream, uint64_t *frames, uint64_t *time);
-
-  private:
-    bool mIsClosed;
-    const sp<Device> mDevice;
-    audio_stream_in_t *mStream;
-    const sp<Stream> mStreamCommon;
-    const sp<StreamMmap<audio_stream_in_t>> mStreamMmap;
-    std::unique_ptr<CommandMQ> mCommandMQ;
-    std::unique_ptr<DataMQ> mDataMQ;
-    std::unique_ptr<StatusMQ> mStatusMQ;
-    EventFlag* mEfGroup;
-    std::atomic<bool> mStopReadThread;
-    sp<Thread> mReadThread;
-
-    virtual ~StreamIn();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
diff --git a/audio/2.0/default/StreamOut.h b/audio/2.0/default/StreamOut.h
deleted file mode 100644
index 99352bc..0000000
--- a/audio/2.0/default/StreamOut.h
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright (C) 2016 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.
- */
-
-#ifndef ANDROID_HARDWARE_AUDIO_V2_0_STREAMOUT_H
-#define ANDROID_HARDWARE_AUDIO_V2_0_STREAMOUT_H
-
-#include <atomic>
-#include <memory>
-
-#include <android/hardware/audio/2.0/IStreamOut.h>
-#include <hidl/MQDescriptor.h>
-#include <hidl/Status.h>
-#include <fmq/EventFlag.h>
-#include <fmq/MessageQueue.h>
-#include <utils/Thread.h>
-
-#include "Device.h"
-#include "Stream.h"
-
-namespace android {
-namespace hardware {
-namespace audio {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioChannelMask;
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioFormat;
-using ::android::hardware::audio::V2_0::AudioDrain;
-using ::android::hardware::audio::V2_0::DeviceAddress;
-using ::android::hardware::audio::V2_0::IStream;
-using ::android::hardware::audio::V2_0::IStreamOut;
-using ::android::hardware::audio::V2_0::IStreamOutCallback;
-using ::android::hardware::audio::V2_0::ParameterValue;
-using ::android::hardware::audio::V2_0::Result;
-using ::android::hardware::audio::V2_0::TimeSpec;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct StreamOut : public IStreamOut {
-    typedef MessageQueue<WriteCommand, kSynchronizedReadWrite> CommandMQ;
-    typedef MessageQueue<uint8_t, kSynchronizedReadWrite> DataMQ;
-    typedef MessageQueue<WriteStatus, kSynchronizedReadWrite> StatusMQ;
-
-    StreamOut(const sp<Device>& device, audio_stream_out_t* stream);
-
-    // Methods from ::android::hardware::audio::V2_0::IStream follow.
-    Return<uint64_t> getFrameSize()  override;
-    Return<uint64_t> getFrameCount()  override;
-    Return<uint64_t> getBufferSize()  override;
-    Return<uint32_t> getSampleRate()  override;
-    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
-    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
-    Return<AudioChannelMask> getChannelMask()  override;
-    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
-    Return<Result> setChannelMask(AudioChannelMask mask)  override;
-    Return<AudioFormat> getFormat()  override;
-    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
-    Return<Result> setFormat(AudioFormat format)  override;
-    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
-    Return<Result> addEffect(uint64_t effectId)  override;
-    Return<Result> removeEffect(uint64_t effectId)  override;
-    Return<Result> standby()  override;
-    Return<AudioDevice> getDevice()  override;
-    Return<Result> setDevice(const DeviceAddress& address)  override;
-    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
-    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
-    Return<void> getParameters(
-            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
-    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
-    Return<void> debugDump(const hidl_handle& fd)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::V2_0::IStreamOut follow.
-    Return<uint32_t> getLatency()  override;
-    Return<Result> setVolume(float left, float right)  override;
-    Return<void> prepareForWriting(
-            uint32_t frameSize, uint32_t framesCount, prepareForWriting_cb _hidl_cb)  override;
-    Return<void> getRenderPosition(getRenderPosition_cb _hidl_cb)  override;
-    Return<void> getNextWriteTimestamp(getNextWriteTimestamp_cb _hidl_cb)  override;
-    Return<Result> setCallback(const sp<IStreamOutCallback>& callback)  override;
-    Return<Result> clearCallback()  override;
-    Return<void> supportsPauseAndResume(supportsPauseAndResume_cb _hidl_cb)  override;
-    Return<Result> pause()  override;
-    Return<Result> resume()  override;
-    Return<bool> supportsDrain()  override;
-    Return<Result> drain(AudioDrain type)  override;
-    Return<Result> flush()  override;
-    Return<void> getPresentationPosition(getPresentationPosition_cb _hidl_cb)  override;
-    Return<Result> start() override;
-    Return<Result> stop() override;
-    Return<void> createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) override;
-    Return<void> getMmapPosition(getMmapPosition_cb _hidl_cb) override;
-
-    static Result getPresentationPositionImpl(
-            audio_stream_out_t *stream, uint64_t *frames, TimeSpec *timeStamp);
-
-  private:
-    bool mIsClosed;
-    const sp<Device> mDevice;
-    audio_stream_out_t *mStream;
-    const sp<Stream> mStreamCommon;
-    const sp<StreamMmap<audio_stream_out_t>> mStreamMmap;
-    sp<IStreamOutCallback> mCallback;
-    std::unique_ptr<CommandMQ> mCommandMQ;
-    std::unique_ptr<DataMQ> mDataMQ;
-    std::unique_ptr<StatusMQ> mStatusMQ;
-    EventFlag* mEfGroup;
-    std::atomic<bool> mStopWriteThread;
-    sp<Thread> mWriteThread;
-
-    virtual ~StreamOut();
-
-    static int asyncCallback(stream_callback_event_t event, void *param, void *cookie);
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_V2_0_STREAMOUT_H
diff --git a/audio/README b/audio/README
new file mode 100644
index 0000000..2b81450
--- /dev/null
+++ b/audio/README
@@ -0,0 +1,47 @@
+Directory structure of the audio HIDL related code.
+
+audio
+|-- 2.0              <== legacy 2.0 core HIDL (.hal) can not be moved to fit
+|                        the directory structure because already published
+|
+|-- common           <== code common to audio core and effect API
+|   |-- 2.0
+|   |   |-- default  <== code that wraps the legacy API
+|   |   `-- vts      <== vts of 2.0 core and effect API common code
+|   |-- 4.0
+|   |   |-- default
+|   |   `-- vts
+|   |-- ...          <== The future versions should continue this structure
+|   |   |-- default
+|   |   `-- vts
+|   `-- all_versions <== code common to all version of both core and effect API
+|       |-- default
+|       `-- vts      <== vts of core and effect API common version independent code
+|
+|-- core           <== code relative to the core API
+|   |-- 2.0          <== 2.0 core API code (except .hal, see audio/2.0)
+|   |   |-- default
+|   |   `-- vts
+|   |-- 4.0
+|   |   |-- default  <== default implementation of the core 4.0 api
+|   |   `-- vts      <== vts code of the 4.0 API
+|   |-- ...
+|   |   |-- default
+|   |   `-- vts
+|   `-- all_versions
+|       |-- default
+|       `-- vts      <== vts of core API common version independent code
+|
+`-- effect           <== idem for the effect API
+    |-- 2.0
+    |   |-- default
+    |   `-- vts
+    |-- 4.0
+    |   |-- default
+    |   `-- vts
+    |-- ...
+    |   |-- default
+    |   `-- vts
+    `-- all_versions
+        |-- default
+        `-- vts
diff --git a/audio/common/2.0/default/Android.bp b/audio/common/2.0/default/Android.bp
index 82b38c0..ac66479 100644
--- a/audio/common/2.0/default/Android.bp
+++ b/audio/common/2.0/default/Android.bp
@@ -21,18 +21,24 @@
         enabled: true,
     },
     srcs: [
-        "EffectMap.cpp",
         "HidlUtils.cpp",
     ],
 
     export_include_dirs: ["."],
 
+    static_libs: [
+    ],
+
     shared_libs: [
         "liblog",
         "libutils",
         "libhidlbase",
+        "android.hardware.audio.common-util",
         "android.hardware.audio.common@2.0",
     ],
+    export_shared_lib_headers: [
+        "android.hardware.audio.common-util"
+    ],
 
     header_libs: [
         "libaudio_system_headers",
diff --git a/audio/common/2.0/default/HidlUtils.cpp b/audio/common/2.0/default/HidlUtils.cpp
index 79cb37c..9771b7b 100644
--- a/audio/common/2.0/default/HidlUtils.cpp
+++ b/audio/common/2.0/default/HidlUtils.cpp
@@ -14,324 +14,8 @@
  * limitations under the License.
  */
 
-#include <string.h>
-
 #include "HidlUtils.h"
 
-using ::android::hardware::audio::common::V2_0::AudioChannelMask;
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioFormat;
-using ::android::hardware::audio::common::V2_0::AudioGainMode;
-using ::android::hardware::audio::common::V2_0::AudioMixLatencyClass;
-using ::android::hardware::audio::common::V2_0::AudioPortConfigMask;
-using ::android::hardware::audio::common::V2_0::AudioPortRole;
-using ::android::hardware::audio::common::V2_0::AudioPortType;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::common::V2_0::AudioStreamType;
-using ::android::hardware::audio::common::V2_0::AudioUsage;
-
-namespace android {
-
-void HidlUtils::audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config) {
-    config->sampleRateHz = halConfig.sample_rate;
-    config->channelMask = AudioChannelMask(halConfig.channel_mask);
-    config->format = AudioFormat(halConfig.format);
-    audioOffloadInfoFromHal(halConfig.offload_info, &config->offloadInfo);
-    config->frameCount = halConfig.frame_count;
-}
-
-void HidlUtils::audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig) {
-    memset(halConfig, 0, sizeof(audio_config_t));
-    halConfig->sample_rate = config.sampleRateHz;
-    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
-    halConfig->format = static_cast<audio_format_t>(config.format);
-    audioOffloadInfoToHal(config.offloadInfo, &halConfig->offload_info);
-    halConfig->frame_count = config.frameCount;
-}
-
-void HidlUtils::audioGainConfigFromHal(
-        const struct audio_gain_config& halConfig, AudioGainConfig* config) {
-    config->index = halConfig.index;
-    config->mode = AudioGainMode(halConfig.mode);
-    config->channelMask = AudioChannelMask(halConfig.channel_mask);
-    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
-        config->values[i] = halConfig.values[i];
-    }
-    config->rampDurationMs = halConfig.ramp_duration_ms;
-}
-
-void HidlUtils::audioGainConfigToHal(
-        const AudioGainConfig& config, struct audio_gain_config* halConfig) {
-    halConfig->index = config.index;
-    halConfig->mode = static_cast<audio_gain_mode_t>(config.mode);
-    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
-    memset(halConfig->values, 0, sizeof(halConfig->values));
-    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
-        halConfig->values[i] = config.values[i];
-    }
-    halConfig->ramp_duration_ms = config.rampDurationMs;
-}
-
-void HidlUtils::audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain) {
-    gain->mode = AudioGainMode(halGain.mode);
-    gain->channelMask = AudioChannelMask(halGain.channel_mask);
-    gain->minValue = halGain.min_value;
-    gain->maxValue = halGain.max_value;
-    gain->defaultValue = halGain.default_value;
-    gain->stepValue = halGain.step_value;
-    gain->minRampMs = halGain.min_ramp_ms;
-    gain->maxRampMs = halGain.max_ramp_ms;
-}
-
-void HidlUtils::audioGainToHal(const AudioGain& gain, struct audio_gain* halGain) {
-    halGain->mode = static_cast<audio_gain_mode_t>(gain.mode);
-    halGain->channel_mask = static_cast<audio_channel_mask_t>(gain.channelMask);
-    halGain->min_value = gain.minValue;
-    halGain->max_value = gain.maxValue;
-    halGain->default_value = gain.defaultValue;
-    halGain->step_value = gain.stepValue;
-    halGain->min_ramp_ms = gain.minRampMs;
-    halGain->max_ramp_ms = gain.maxRampMs;
-}
-
-void HidlUtils::audioOffloadInfoFromHal(
-        const audio_offload_info_t& halOffload, AudioOffloadInfo* offload) {
-    offload->sampleRateHz = halOffload.sample_rate;
-    offload->channelMask = AudioChannelMask(halOffload.channel_mask);
-    offload->format = AudioFormat(halOffload.format);
-    offload->streamType = AudioStreamType(halOffload.stream_type);
-    offload->bitRatePerSecond = halOffload.bit_rate;
-    offload->durationMicroseconds = halOffload.duration_us;
-    offload->hasVideo = halOffload.has_video;
-    offload->isStreaming = halOffload.is_streaming;
-    offload->bitWidth = halOffload.bit_width;
-    offload->bufferSize = halOffload.offload_buffer_size;
-    offload->usage = static_cast<AudioUsage>(halOffload.usage);
-}
-
-void HidlUtils::audioOffloadInfoToHal(
-        const AudioOffloadInfo& offload, audio_offload_info_t* halOffload) {
-    *halOffload = AUDIO_INFO_INITIALIZER;
-    halOffload->sample_rate = offload.sampleRateHz;
-    halOffload->channel_mask = static_cast<audio_channel_mask_t>(offload.channelMask);
-    halOffload->format = static_cast<audio_format_t>(offload.format);
-    halOffload->stream_type = static_cast<audio_stream_type_t>(offload.streamType);
-    halOffload->bit_rate = offload.bitRatePerSecond;
-    halOffload->duration_us = offload.durationMicroseconds;
-    halOffload->has_video = offload.hasVideo;
-    halOffload->is_streaming = offload.isStreaming;
-    halOffload->bit_width = offload.bitWidth;
-    halOffload->offload_buffer_size = offload.bufferSize;
-    halOffload->usage = static_cast<audio_usage_t>(offload.usage);
-}
-
-void HidlUtils::audioPortConfigFromHal(
-        const struct audio_port_config& halConfig, AudioPortConfig* config) {
-    config->id = halConfig.id;
-    config->role = AudioPortRole(halConfig.role);
-    config->type = AudioPortType(halConfig.type);
-    config->configMask = AudioPortConfigMask(halConfig.config_mask);
-    config->sampleRateHz = halConfig.sample_rate;
-    config->channelMask = AudioChannelMask(halConfig.channel_mask);
-    config->format = AudioFormat(halConfig.format);
-    audioGainConfigFromHal(halConfig.gain, &config->gain);
-    switch (halConfig.type) {
-        case AUDIO_PORT_TYPE_NONE: break;
-        case AUDIO_PORT_TYPE_DEVICE: {
-            config->ext.device.hwModule = halConfig.ext.device.hw_module;
-            config->ext.device.type = AudioDevice(halConfig.ext.device.type);
-            memcpy(config->ext.device.address.data(),
-                    halConfig.ext.device.address,
-                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
-            break;
-        }
-        case AUDIO_PORT_TYPE_MIX: {
-            config->ext.mix.hwModule = halConfig.ext.mix.hw_module;
-            config->ext.mix.ioHandle = halConfig.ext.mix.handle;
-            if (halConfig.role == AUDIO_PORT_ROLE_SOURCE) {
-                config->ext.mix.useCase.source = AudioSource(halConfig.ext.mix.usecase.source);
-            } else if (halConfig.role == AUDIO_PORT_ROLE_SINK) {
-                config->ext.mix.useCase.stream = AudioStreamType(halConfig.ext.mix.usecase.stream);
-            }
-            break;
-        }
-        case AUDIO_PORT_TYPE_SESSION: {
-            config->ext.session.session = halConfig.ext.session.session;
-            break;
-        }
-    }
-}
-
-void HidlUtils::audioPortConfigToHal(
-        const AudioPortConfig& config, struct audio_port_config* halConfig) {
-    memset(halConfig, 0, sizeof(audio_port_config));
-    halConfig->id = config.id;
-    halConfig->role = static_cast<audio_port_role_t>(config.role);
-    halConfig->type = static_cast<audio_port_type_t>(config.type);
-    halConfig->config_mask = static_cast<unsigned int>(config.configMask);
-    halConfig->sample_rate = config.sampleRateHz;
-    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
-    halConfig->format = static_cast<audio_format_t>(config.format);
-    audioGainConfigToHal(config.gain, &halConfig->gain);
-    switch (config.type) {
-        case AudioPortType::NONE: break;
-        case AudioPortType::DEVICE: {
-            halConfig->ext.device.hw_module = config.ext.device.hwModule;
-            halConfig->ext.device.type = static_cast<audio_devices_t>(config.ext.device.type);
-            memcpy(halConfig->ext.device.address,
-                    config.ext.device.address.data(),
-                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
-            break;
-        }
-        case AudioPortType::MIX: {
-            halConfig->ext.mix.hw_module = config.ext.mix.hwModule;
-            halConfig->ext.mix.handle = config.ext.mix.ioHandle;
-            if (config.role == AudioPortRole::SOURCE) {
-                halConfig->ext.mix.usecase.source =
-                        static_cast<audio_source_t>(config.ext.mix.useCase.source);
-            } else if (config.role == AudioPortRole::SINK) {
-                halConfig->ext.mix.usecase.stream =
-                        static_cast<audio_stream_type_t>(config.ext.mix.useCase.stream);
-            }
-            break;
-        }
-        case AudioPortType::SESSION: {
-            halConfig->ext.session.session =
-                    static_cast<audio_session_t>(config.ext.session.session);
-            break;
-        }
-    }
-}
-
-void HidlUtils::audioPortConfigsFromHal(
-        unsigned int numHalConfigs, const struct audio_port_config *halConfigs,
-        hidl_vec<AudioPortConfig> *configs) {
-    configs->resize(numHalConfigs);
-    for (unsigned int i = 0; i < numHalConfigs; ++i) {
-        audioPortConfigFromHal(halConfigs[i], &(*configs)[i]);
-    }
-}
-
-std::unique_ptr<audio_port_config[]> HidlUtils::audioPortConfigsToHal(
-        const hidl_vec<AudioPortConfig>& configs) {
-    std::unique_ptr<audio_port_config[]> halConfigs(new audio_port_config[configs.size()]);
-    for (size_t i = 0; i < configs.size(); ++i) {
-        audioPortConfigToHal(configs[i], &halConfigs[i]);
-    }
-    return halConfigs;
-}
-
-void HidlUtils::audioPortFromHal(const struct audio_port& halPort, AudioPort* port) {
-    port->id = halPort.id;
-    port->role = AudioPortRole(halPort.role);
-    port->type = AudioPortType(halPort.type);
-    port->name.setToExternal(halPort.name, strlen(halPort.name));
-    port->sampleRates.resize(halPort.num_sample_rates);
-    for (size_t i = 0; i < halPort.num_sample_rates; ++i) {
-        port->sampleRates[i] = halPort.sample_rates[i];
-    }
-    port->channelMasks.resize(halPort.num_channel_masks);
-    for (size_t i = 0; i < halPort.num_channel_masks; ++i) {
-        port->channelMasks[i] = AudioChannelMask(halPort.channel_masks[i]);
-    }
-    port->formats.resize(halPort.num_formats);
-    for (size_t i = 0; i < halPort.num_formats; ++i) {
-        port->formats[i] = AudioFormat(halPort.formats[i]);
-    }
-    port->gains.resize(halPort.num_gains);
-    for (size_t i = 0; i < halPort.num_gains; ++i) {
-        audioGainFromHal(halPort.gains[i], &port->gains[i]);
-    }
-    audioPortConfigFromHal(halPort.active_config, &port->activeConfig);
-    switch (halPort.type) {
-        case AUDIO_PORT_TYPE_NONE: break;
-        case AUDIO_PORT_TYPE_DEVICE: {
-            port->ext.device.hwModule = halPort.ext.device.hw_module;
-            port->ext.device.type = AudioDevice(halPort.ext.device.type);
-            memcpy(port->ext.device.address.data(),
-                    halPort.ext.device.address,
-                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
-            break;
-        }
-        case AUDIO_PORT_TYPE_MIX: {
-            port->ext.mix.hwModule = halPort.ext.mix.hw_module;
-            port->ext.mix.ioHandle = halPort.ext.mix.handle;
-            port->ext.mix.latencyClass = AudioMixLatencyClass(halPort.ext.mix.latency_class);
-            break;
-        }
-        case AUDIO_PORT_TYPE_SESSION: {
-            port->ext.session.session = halPort.ext.session.session;
-            break;
-        }
-    }
-}
-
-void HidlUtils::audioPortToHal(const AudioPort& port, struct audio_port* halPort) {
-    memset(halPort, 0, sizeof(audio_port));
-    halPort->id = port.id;
-    halPort->role = static_cast<audio_port_role_t>(port.role);
-    halPort->type = static_cast<audio_port_type_t>(port.type);
-    memcpy(halPort->name,
-            port.name.c_str(),
-            std::min(port.name.size(), static_cast<size_t>(AUDIO_PORT_MAX_NAME_LEN)));
-    halPort->num_sample_rates =
-            std::min(port.sampleRates.size(), static_cast<size_t>(AUDIO_PORT_MAX_SAMPLING_RATES));
-    for (size_t i = 0; i < halPort->num_sample_rates; ++i) {
-        halPort->sample_rates[i] = port.sampleRates[i];
-    }
-    halPort->num_channel_masks =
-            std::min(port.channelMasks.size(), static_cast<size_t>(AUDIO_PORT_MAX_CHANNEL_MASKS));
-    for (size_t i = 0; i < halPort->num_channel_masks; ++i) {
-        halPort->channel_masks[i] = static_cast<audio_channel_mask_t>(port.channelMasks[i]);
-    }
-    halPort->num_formats =
-            std::min(port.formats.size(), static_cast<size_t>(AUDIO_PORT_MAX_FORMATS));
-    for (size_t i = 0; i < halPort->num_formats; ++i) {
-        halPort->formats[i] = static_cast<audio_format_t>(port.formats[i]);
-    }
-    halPort->num_gains = std::min(port.gains.size(), static_cast<size_t>(AUDIO_PORT_MAX_GAINS));
-    for (size_t i = 0; i < halPort->num_gains; ++i) {
-        audioGainToHal(port.gains[i], &halPort->gains[i]);
-    }
-    audioPortConfigToHal(port.activeConfig, &halPort->active_config);
-    switch (port.type) {
-        case AudioPortType::NONE: break;
-        case AudioPortType::DEVICE: {
-            halPort->ext.device.hw_module = port.ext.device.hwModule;
-            halPort->ext.device.type = static_cast<audio_devices_t>(port.ext.device.type);
-            memcpy(halPort->ext.device.address,
-                    port.ext.device.address.data(),
-                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
-            break;
-        }
-        case AudioPortType::MIX: {
-            halPort->ext.mix.hw_module = port.ext.mix.hwModule;
-            halPort->ext.mix.handle = port.ext.mix.ioHandle;
-            halPort->ext.mix.latency_class =
-                    static_cast<audio_mix_latency_class_t>(port.ext.mix.latencyClass);
-            break;
-        }
-        case AudioPortType::SESSION: {
-            halPort->ext.session.session = static_cast<audio_session_t>(port.ext.session.session);
-            break;
-        }
-    }
-}
-
-void HidlUtils::uuidFromHal(const audio_uuid_t& halUuid, Uuid* uuid) {
-    uuid->timeLow = halUuid.timeLow;
-    uuid->timeMid = halUuid.timeMid;
-    uuid->versionAndTimeHigh = halUuid.timeHiAndVersion;
-    uuid->variantAndClockSeqHigh = halUuid.clockSeq;
-    memcpy(uuid->node.data(), halUuid.node, uuid->node.size());
-}
-
-void HidlUtils::uuidToHal(const Uuid& uuid, audio_uuid_t* halUuid) {
-    halUuid->timeLow = uuid.timeLow;
-    halUuid->timeMid = uuid.timeMid;
-    halUuid->timeHiAndVersion = uuid.versionAndTimeHigh;
-    halUuid->clockSeq = uuid.variantAndClockSeqHigh;
-    memcpy(halUuid->node, uuid.node.data(), uuid.node.size());
-}
-
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <common/all-versions/default/HidlUtils.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/common/2.0/default/HidlUtils.h b/audio/common/2.0/default/HidlUtils.h
index 3fde4d7..24543b1 100644
--- a/audio/common/2.0/default/HidlUtils.h
+++ b/audio/common/2.0/default/HidlUtils.h
@@ -17,51 +17,10 @@
 #ifndef android_hardware_audio_V2_0_Hidl_Utils_H_
 #define android_hardware_audio_V2_0_Hidl_Utils_H_
 
-#include <memory>
-
 #include <android/hardware/audio/common/2.0/types.h>
-#include <system/audio.h>
 
-using ::android::hardware::audio::common::V2_0::AudioConfig;
-using ::android::hardware::audio::common::V2_0::AudioGain;
-using ::android::hardware::audio::common::V2_0::AudioGainConfig;
-using ::android::hardware::audio::common::V2_0::AudioOffloadInfo;
-using ::android::hardware::audio::common::V2_0::AudioPort;
-using ::android::hardware::audio::common::V2_0::AudioPortConfig;
-using ::android::hardware::audio::common::V2_0::Uuid;
-using ::android::hardware::hidl_vec;
-
-namespace android {
-
-class HidlUtils {
-  public:
-    static void audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config);
-    static void audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig);
-    static void audioGainConfigFromHal(
-            const struct audio_gain_config& halConfig, AudioGainConfig* config);
-    static void audioGainConfigToHal(
-            const AudioGainConfig& config, struct audio_gain_config* halConfig);
-    static void audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain);
-    static void audioGainToHal(const AudioGain& gain, struct audio_gain* halGain);
-    static void audioOffloadInfoFromHal(
-            const audio_offload_info_t& halOffload, AudioOffloadInfo* offload);
-    static void audioOffloadInfoToHal(
-            const AudioOffloadInfo& offload, audio_offload_info_t* halOffload);
-    static void audioPortConfigFromHal(
-            const struct audio_port_config& halConfig, AudioPortConfig* config);
-    static void audioPortConfigToHal(
-            const AudioPortConfig& config, struct audio_port_config* halConfig);
-    static void audioPortConfigsFromHal(
-            unsigned int numHalConfigs, const struct audio_port_config *halConfigs,
-            hidl_vec<AudioPortConfig> *configs);
-    static std::unique_ptr<audio_port_config[]> audioPortConfigsToHal(
-            const hidl_vec<AudioPortConfig>& configs);
-    static void audioPortFromHal(const struct audio_port& halPort, AudioPort* port);
-    static void audioPortToHal(const AudioPort& port, struct audio_port* halPort);
-    static void uuidFromHal(const audio_uuid_t& halUuid, Uuid* uuid);
-    static void uuidToHal(const Uuid& uuid, audio_uuid_t* halUuid);
-};
-
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <common/all-versions/default/HidlUtils.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // android_hardware_audio_V2_0_Hidl_Utils_H_
diff --git a/audio/common/README b/audio/common/README
new file mode 100644
index 0000000..cd03106
--- /dev/null
+++ b/audio/common/README
@@ -0,0 +1 @@
+This folder contains code common to audio core and effect API
diff --git a/audio/common/2.0/default/OWNERS b/audio/common/all-versions/OWNERS
similarity index 100%
copy from audio/common/2.0/default/OWNERS
copy to audio/common/all-versions/OWNERS
diff --git a/audio/common/all-versions/README b/audio/common/all-versions/README
new file mode 100644
index 0000000..d8df022
--- /dev/null
+++ b/audio/common/all-versions/README
@@ -0,0 +1 @@
+This folder contains code common to all versions of the audio API
diff --git a/audio/common/all-versions/default/Android.bp b/audio/common/all-versions/default/Android.bp
new file mode 100644
index 0000000..8f6b74c
--- /dev/null
+++ b/audio/common/all-versions/default/Android.bp
@@ -0,0 +1,39 @@
+//
+// Copyright (C) 2016 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.
+
+cc_library_shared {
+    name: "android.hardware.audio.common-util",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "EffectMap.cpp",
+    ],
+
+    export_include_dirs: ["include"],
+
+    shared_libs: [
+        "liblog",
+        "libutils",
+        "libhidlbase",
+    ],
+
+    header_libs: [
+        "libaudio_system_headers",
+        "libhardware_headers",
+    ],
+}
diff --git a/audio/common/2.0/default/EffectMap.cpp b/audio/common/all-versions/default/EffectMap.cpp
similarity index 96%
rename from audio/common/2.0/default/EffectMap.cpp
rename to audio/common/all-versions/default/EffectMap.cpp
index 703b91c..7f8da1e 100644
--- a/audio/common/2.0/default/EffectMap.cpp
+++ b/audio/common/all-versions/default/EffectMap.cpp
@@ -16,7 +16,7 @@
 
 #include <atomic>
 
-#include "EffectMap.h"
+#include "common/all-versions/default/EffectMap.h"
 
 namespace android {
 
diff --git a/audio/common/2.0/default/EffectMap.h b/audio/common/all-versions/default/include/common/all-versions/default/EffectMap.h
similarity index 86%
rename from audio/common/2.0/default/EffectMap.h
rename to audio/common/all-versions/default/include/common/all-versions/default/EffectMap.h
index 82bbb1f..547c6d5 100644
--- a/audio/common/2.0/default/EffectMap.h
+++ b/audio/common/all-versions/default/include/common/all-versions/default/EffectMap.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef android_hardware_audio_V2_0_EffectMap_H_
-#define android_hardware_audio_V2_0_EffectMap_H_
+#ifndef android_hardware_audio_common_EffectMap_H_
+#define android_hardware_audio_common_EffectMap_H_
 
 #include <mutex>
 
@@ -27,14 +27,14 @@
 
 // This class needs to be in 'android' ns because Singleton macros require that.
 class EffectMap : public Singleton<EffectMap> {
-  public:
+   public:
     static const uint64_t INVALID_ID;
 
     uint64_t add(effect_handle_t handle);
     effect_handle_t get(const uint64_t& id);
     void remove(effect_handle_t handle);
 
-  private:
+   private:
     static uint64_t makeUniqueId();
 
     std::mutex mLock;
@@ -43,4 +43,4 @@
 
 }  // namespace android
 
-#endif  // android_hardware_audio_V2_0_EffectMap_H_
+#endif  // android_hardware_audio_common_EffectMap_H_
diff --git a/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.h b/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.h
new file mode 100644
index 0000000..1654ac6
--- /dev/null
+++ b/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef AUDIO_HAL_VERSION
+#error "AUDIO_HAL_VERSION must be set before including this file."
+#endif
+
+#include <memory>
+
+#include <system/audio.h>
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioConfig;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioGain;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioGainConfig;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioOffloadInfo;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPort;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPortConfig;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::Uuid;
+using ::android::hardware::hidl_vec;
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace common {
+namespace AUDIO_HAL_VERSION {
+
+class HidlUtils {
+   public:
+    static void audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config);
+    static void audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig);
+    static void audioGainConfigFromHal(const struct audio_gain_config& halConfig,
+                                       AudioGainConfig* config);
+    static void audioGainConfigToHal(const AudioGainConfig& config,
+                                     struct audio_gain_config* halConfig);
+    static void audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain);
+    static void audioGainToHal(const AudioGain& gain, struct audio_gain* halGain);
+    static void audioOffloadInfoFromHal(const audio_offload_info_t& halOffload,
+                                        AudioOffloadInfo* offload);
+    static void audioOffloadInfoToHal(const AudioOffloadInfo& offload,
+                                      audio_offload_info_t* halOffload);
+    static void audioPortConfigFromHal(const struct audio_port_config& halConfig,
+                                       AudioPortConfig* config);
+    static void audioPortConfigToHal(const AudioPortConfig& config,
+                                     struct audio_port_config* halConfig);
+    static void audioPortConfigsFromHal(unsigned int numHalConfigs,
+                                        const struct audio_port_config* halConfigs,
+                                        hidl_vec<AudioPortConfig>* configs);
+    static std::unique_ptr<audio_port_config[]> audioPortConfigsToHal(
+        const hidl_vec<AudioPortConfig>& configs);
+    static void audioPortFromHal(const struct audio_port& halPort, AudioPort* port);
+    static void audioPortToHal(const AudioPort& port, struct audio_port* halPort);
+    static void uuidFromHal(const audio_uuid_t& halUuid, Uuid* uuid);
+    static void uuidToHal(const Uuid& uuid, audio_uuid_t* halUuid);
+};
+
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.impl.h b/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.impl.h
new file mode 100644
index 0000000..935f307
--- /dev/null
+++ b/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.impl.h
@@ -0,0 +1,346 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef AUDIO_HAL_VERSION
+#error "AUDIO_HAL_VERSION must be set before including this file."
+#endif
+
+#include <string.h>
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioChannelMask;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioFormat;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioGainMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMixLatencyClass;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPortConfigMask;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPortRole;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPortType;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioStreamType;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioUsage;
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace common {
+namespace AUDIO_HAL_VERSION {
+
+void HidlUtils::audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config) {
+    config->sampleRateHz = halConfig.sample_rate;
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    config->format = AudioFormat(halConfig.format);
+    audioOffloadInfoFromHal(halConfig.offload_info, &config->offloadInfo);
+    config->frameCount = halConfig.frame_count;
+}
+
+void HidlUtils::audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig) {
+    memset(halConfig, 0, sizeof(audio_config_t));
+    halConfig->sample_rate = config.sampleRateHz;
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    halConfig->format = static_cast<audio_format_t>(config.format);
+    audioOffloadInfoToHal(config.offloadInfo, &halConfig->offload_info);
+    halConfig->frame_count = config.frameCount;
+}
+
+void HidlUtils::audioGainConfigFromHal(const struct audio_gain_config& halConfig,
+                                       AudioGainConfig* config) {
+    config->index = halConfig.index;
+    config->mode = AudioGainMode(halConfig.mode);
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
+        config->values[i] = halConfig.values[i];
+    }
+    config->rampDurationMs = halConfig.ramp_duration_ms;
+}
+
+void HidlUtils::audioGainConfigToHal(const AudioGainConfig& config,
+                                     struct audio_gain_config* halConfig) {
+    halConfig->index = config.index;
+    halConfig->mode = static_cast<audio_gain_mode_t>(config.mode);
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    memset(halConfig->values, 0, sizeof(halConfig->values));
+    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
+        halConfig->values[i] = config.values[i];
+    }
+    halConfig->ramp_duration_ms = config.rampDurationMs;
+}
+
+void HidlUtils::audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain) {
+    gain->mode = AudioGainMode(halGain.mode);
+    gain->channelMask = AudioChannelMask(halGain.channel_mask);
+    gain->minValue = halGain.min_value;
+    gain->maxValue = halGain.max_value;
+    gain->defaultValue = halGain.default_value;
+    gain->stepValue = halGain.step_value;
+    gain->minRampMs = halGain.min_ramp_ms;
+    gain->maxRampMs = halGain.max_ramp_ms;
+}
+
+void HidlUtils::audioGainToHal(const AudioGain& gain, struct audio_gain* halGain) {
+    halGain->mode = static_cast<audio_gain_mode_t>(gain.mode);
+    halGain->channel_mask = static_cast<audio_channel_mask_t>(gain.channelMask);
+    halGain->min_value = gain.minValue;
+    halGain->max_value = gain.maxValue;
+    halGain->default_value = gain.defaultValue;
+    halGain->step_value = gain.stepValue;
+    halGain->min_ramp_ms = gain.minRampMs;
+    halGain->max_ramp_ms = gain.maxRampMs;
+}
+
+void HidlUtils::audioOffloadInfoFromHal(const audio_offload_info_t& halOffload,
+                                        AudioOffloadInfo* offload) {
+    offload->sampleRateHz = halOffload.sample_rate;
+    offload->channelMask = AudioChannelMask(halOffload.channel_mask);
+    offload->format = AudioFormat(halOffload.format);
+    offload->streamType = AudioStreamType(halOffload.stream_type);
+    offload->bitRatePerSecond = halOffload.bit_rate;
+    offload->durationMicroseconds = halOffload.duration_us;
+    offload->hasVideo = halOffload.has_video;
+    offload->isStreaming = halOffload.is_streaming;
+    offload->bitWidth = halOffload.bit_width;
+    offload->bufferSize = halOffload.offload_buffer_size;
+    offload->usage = static_cast<AudioUsage>(halOffload.usage);
+}
+
+void HidlUtils::audioOffloadInfoToHal(const AudioOffloadInfo& offload,
+                                      audio_offload_info_t* halOffload) {
+    *halOffload = AUDIO_INFO_INITIALIZER;
+    halOffload->sample_rate = offload.sampleRateHz;
+    halOffload->channel_mask = static_cast<audio_channel_mask_t>(offload.channelMask);
+    halOffload->format = static_cast<audio_format_t>(offload.format);
+    halOffload->stream_type = static_cast<audio_stream_type_t>(offload.streamType);
+    halOffload->bit_rate = offload.bitRatePerSecond;
+    halOffload->duration_us = offload.durationMicroseconds;
+    halOffload->has_video = offload.hasVideo;
+    halOffload->is_streaming = offload.isStreaming;
+    halOffload->bit_width = offload.bitWidth;
+    halOffload->offload_buffer_size = offload.bufferSize;
+    halOffload->usage = static_cast<audio_usage_t>(offload.usage);
+}
+
+void HidlUtils::audioPortConfigFromHal(const struct audio_port_config& halConfig,
+                                       AudioPortConfig* config) {
+    config->id = halConfig.id;
+    config->role = AudioPortRole(halConfig.role);
+    config->type = AudioPortType(halConfig.type);
+    config->configMask = AudioPortConfigMask(halConfig.config_mask);
+    config->sampleRateHz = halConfig.sample_rate;
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    config->format = AudioFormat(halConfig.format);
+    audioGainConfigFromHal(halConfig.gain, &config->gain);
+    switch (halConfig.type) {
+        case AUDIO_PORT_TYPE_NONE:
+            break;
+        case AUDIO_PORT_TYPE_DEVICE: {
+            config->ext.device.hwModule = halConfig.ext.device.hw_module;
+            config->ext.device.type = AudioDevice(halConfig.ext.device.type);
+            memcpy(config->ext.device.address.data(), halConfig.ext.device.address,
+                   AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AUDIO_PORT_TYPE_MIX: {
+            config->ext.mix.hwModule = halConfig.ext.mix.hw_module;
+            config->ext.mix.ioHandle = halConfig.ext.mix.handle;
+            if (halConfig.role == AUDIO_PORT_ROLE_SOURCE) {
+                config->ext.mix.useCase.source = AudioSource(halConfig.ext.mix.usecase.source);
+            } else if (halConfig.role == AUDIO_PORT_ROLE_SINK) {
+                config->ext.mix.useCase.stream = AudioStreamType(halConfig.ext.mix.usecase.stream);
+            }
+            break;
+        }
+        case AUDIO_PORT_TYPE_SESSION: {
+            config->ext.session.session = halConfig.ext.session.session;
+            break;
+        }
+    }
+}
+
+void HidlUtils::audioPortConfigToHal(const AudioPortConfig& config,
+                                     struct audio_port_config* halConfig) {
+    memset(halConfig, 0, sizeof(audio_port_config));
+    halConfig->id = config.id;
+    halConfig->role = static_cast<audio_port_role_t>(config.role);
+    halConfig->type = static_cast<audio_port_type_t>(config.type);
+    halConfig->config_mask = static_cast<unsigned int>(config.configMask);
+    halConfig->sample_rate = config.sampleRateHz;
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    halConfig->format = static_cast<audio_format_t>(config.format);
+    audioGainConfigToHal(config.gain, &halConfig->gain);
+    switch (config.type) {
+        case AudioPortType::NONE:
+            break;
+        case AudioPortType::DEVICE: {
+            halConfig->ext.device.hw_module = config.ext.device.hwModule;
+            halConfig->ext.device.type = static_cast<audio_devices_t>(config.ext.device.type);
+            memcpy(halConfig->ext.device.address, config.ext.device.address.data(),
+                   AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AudioPortType::MIX: {
+            halConfig->ext.mix.hw_module = config.ext.mix.hwModule;
+            halConfig->ext.mix.handle = config.ext.mix.ioHandle;
+            if (config.role == AudioPortRole::SOURCE) {
+                halConfig->ext.mix.usecase.source =
+                    static_cast<audio_source_t>(config.ext.mix.useCase.source);
+            } else if (config.role == AudioPortRole::SINK) {
+                halConfig->ext.mix.usecase.stream =
+                    static_cast<audio_stream_type_t>(config.ext.mix.useCase.stream);
+            }
+            break;
+        }
+        case AudioPortType::SESSION: {
+            halConfig->ext.session.session =
+                static_cast<audio_session_t>(config.ext.session.session);
+            break;
+        }
+    }
+}
+
+void HidlUtils::audioPortConfigsFromHal(unsigned int numHalConfigs,
+                                        const struct audio_port_config* halConfigs,
+                                        hidl_vec<AudioPortConfig>* configs) {
+    configs->resize(numHalConfigs);
+    for (unsigned int i = 0; i < numHalConfigs; ++i) {
+        audioPortConfigFromHal(halConfigs[i], &(*configs)[i]);
+    }
+}
+
+std::unique_ptr<audio_port_config[]> HidlUtils::audioPortConfigsToHal(
+    const hidl_vec<AudioPortConfig>& configs) {
+    std::unique_ptr<audio_port_config[]> halConfigs(new audio_port_config[configs.size()]);
+    for (size_t i = 0; i < configs.size(); ++i) {
+        audioPortConfigToHal(configs[i], &halConfigs[i]);
+    }
+    return halConfigs;
+}
+
+void HidlUtils::audioPortFromHal(const struct audio_port& halPort, AudioPort* port) {
+    port->id = halPort.id;
+    port->role = AudioPortRole(halPort.role);
+    port->type = AudioPortType(halPort.type);
+    port->name.setToExternal(halPort.name, strlen(halPort.name));
+    port->sampleRates.resize(halPort.num_sample_rates);
+    for (size_t i = 0; i < halPort.num_sample_rates; ++i) {
+        port->sampleRates[i] = halPort.sample_rates[i];
+    }
+    port->channelMasks.resize(halPort.num_channel_masks);
+    for (size_t i = 0; i < halPort.num_channel_masks; ++i) {
+        port->channelMasks[i] = AudioChannelMask(halPort.channel_masks[i]);
+    }
+    port->formats.resize(halPort.num_formats);
+    for (size_t i = 0; i < halPort.num_formats; ++i) {
+        port->formats[i] = AudioFormat(halPort.formats[i]);
+    }
+    port->gains.resize(halPort.num_gains);
+    for (size_t i = 0; i < halPort.num_gains; ++i) {
+        audioGainFromHal(halPort.gains[i], &port->gains[i]);
+    }
+    audioPortConfigFromHal(halPort.active_config, &port->activeConfig);
+    switch (halPort.type) {
+        case AUDIO_PORT_TYPE_NONE:
+            break;
+        case AUDIO_PORT_TYPE_DEVICE: {
+            port->ext.device.hwModule = halPort.ext.device.hw_module;
+            port->ext.device.type = AudioDevice(halPort.ext.device.type);
+            memcpy(port->ext.device.address.data(), halPort.ext.device.address,
+                   AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AUDIO_PORT_TYPE_MIX: {
+            port->ext.mix.hwModule = halPort.ext.mix.hw_module;
+            port->ext.mix.ioHandle = halPort.ext.mix.handle;
+            port->ext.mix.latencyClass = AudioMixLatencyClass(halPort.ext.mix.latency_class);
+            break;
+        }
+        case AUDIO_PORT_TYPE_SESSION: {
+            port->ext.session.session = halPort.ext.session.session;
+            break;
+        }
+    }
+}
+
+void HidlUtils::audioPortToHal(const AudioPort& port, struct audio_port* halPort) {
+    memset(halPort, 0, sizeof(audio_port));
+    halPort->id = port.id;
+    halPort->role = static_cast<audio_port_role_t>(port.role);
+    halPort->type = static_cast<audio_port_type_t>(port.type);
+    memcpy(halPort->name, port.name.c_str(),
+           std::min(port.name.size(), static_cast<size_t>(AUDIO_PORT_MAX_NAME_LEN)));
+    halPort->num_sample_rates =
+        std::min(port.sampleRates.size(), static_cast<size_t>(AUDIO_PORT_MAX_SAMPLING_RATES));
+    for (size_t i = 0; i < halPort->num_sample_rates; ++i) {
+        halPort->sample_rates[i] = port.sampleRates[i];
+    }
+    halPort->num_channel_masks =
+        std::min(port.channelMasks.size(), static_cast<size_t>(AUDIO_PORT_MAX_CHANNEL_MASKS));
+    for (size_t i = 0; i < halPort->num_channel_masks; ++i) {
+        halPort->channel_masks[i] = static_cast<audio_channel_mask_t>(port.channelMasks[i]);
+    }
+    halPort->num_formats =
+        std::min(port.formats.size(), static_cast<size_t>(AUDIO_PORT_MAX_FORMATS));
+    for (size_t i = 0; i < halPort->num_formats; ++i) {
+        halPort->formats[i] = static_cast<audio_format_t>(port.formats[i]);
+    }
+    halPort->num_gains = std::min(port.gains.size(), static_cast<size_t>(AUDIO_PORT_MAX_GAINS));
+    for (size_t i = 0; i < halPort->num_gains; ++i) {
+        audioGainToHal(port.gains[i], &halPort->gains[i]);
+    }
+    audioPortConfigToHal(port.activeConfig, &halPort->active_config);
+    switch (port.type) {
+        case AudioPortType::NONE:
+            break;
+        case AudioPortType::DEVICE: {
+            halPort->ext.device.hw_module = port.ext.device.hwModule;
+            halPort->ext.device.type = static_cast<audio_devices_t>(port.ext.device.type);
+            memcpy(halPort->ext.device.address, port.ext.device.address.data(),
+                   AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AudioPortType::MIX: {
+            halPort->ext.mix.hw_module = port.ext.mix.hwModule;
+            halPort->ext.mix.handle = port.ext.mix.ioHandle;
+            halPort->ext.mix.latency_class =
+                static_cast<audio_mix_latency_class_t>(port.ext.mix.latencyClass);
+            break;
+        }
+        case AudioPortType::SESSION: {
+            halPort->ext.session.session = static_cast<audio_session_t>(port.ext.session.session);
+            break;
+        }
+    }
+}
+
+void HidlUtils::uuidFromHal(const audio_uuid_t& halUuid, Uuid* uuid) {
+    uuid->timeLow = halUuid.timeLow;
+    uuid->timeMid = halUuid.timeMid;
+    uuid->versionAndTimeHigh = halUuid.timeHiAndVersion;
+    uuid->variantAndClockSeqHigh = halUuid.clockSeq;
+    memcpy(uuid->node.data(), halUuid.node, uuid->node.size());
+}
+
+void HidlUtils::uuidToHal(const Uuid& uuid, audio_uuid_t* halUuid) {
+    halUuid->timeLow = uuid.timeLow;
+    halUuid->timeMid = uuid.timeMid;
+    halUuid->timeHiAndVersion = uuid.versionAndTimeHigh;
+    halUuid->clockSeq = uuid.variantAndClockSeqHigh;
+    memcpy(halUuid->node, uuid.node.data(), uuid.node.size());
+}
+
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/common/all-versions/test/OWNERS b/audio/common/all-versions/test/OWNERS
new file mode 100644
index 0000000..6a26ae7
--- /dev/null
+++ b/audio/common/all-versions/test/OWNERS
@@ -0,0 +1,2 @@
+yim@google.com
+zhuoyao@google.com
diff --git a/audio/common/test/utility/Android.bp b/audio/common/all-versions/test/utility/Android.bp
similarity index 100%
rename from audio/common/test/utility/Android.bp
rename to audio/common/all-versions/test/utility/Android.bp
diff --git a/audio/common/test/utility/include/utility/AssertOk.h b/audio/common/all-versions/test/utility/include/utility/AssertOk.h
similarity index 88%
rename from audio/common/test/utility/include/utility/AssertOk.h
rename to audio/common/all-versions/test/utility/include/utility/AssertOk.h
index d8aa451..11e1c24 100644
--- a/audio/common/test/utility/include/utility/AssertOk.h
+++ b/audio/common/all-versions/test/utility/include/utility/AssertOk.h
@@ -17,7 +17,7 @@
 #define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ASSERTOK_H
 
 #include <algorithm>
-#include <vector>
+#include <initializer_list>
 
 #include <hidl/Status.h>
 
@@ -33,7 +33,6 @@
 // This is a detail namespace, thus it is OK to import a class as nobody else is
 // allowed to use it
 using ::android::hardware::Return;
-using ::android::hardware::audio::V2_0::Result;
 
 template <class T>
 inline ::testing::AssertionResult assertIsOk(const char* expr, const Return<T>& ret) {
@@ -50,6 +49,7 @@
 }
 
 // Expect two equal Results
+template <class Result>
 inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
                                                Result expected, Result result) {
     return ::testing::AssertionResult(expected == result)
@@ -58,6 +58,7 @@
 }
 
 // Expect two equal Results one being wrapped in an OK Return
+template <class Result>
 inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
                                                Result expected, const Return<Result>& ret) {
     return continueIfIsOk(r_expr, ret,
@@ -65,8 +66,10 @@
 }
 
 // Expect a Result to be part of a list of Results
+template <class Result>
 inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
-                                               const std::vector<Result>& expected, Result result) {
+                                               const std::initializer_list<Result>& expected,
+                                               Result result) {
     if (std::find(expected.begin(), expected.end(), result) != expected.end()) {
         return ::testing::AssertionSuccess();  // result is in expected
     }
@@ -77,8 +80,9 @@
 }
 
 // Expect a Result wrapped in an OK Return to be part of a list of Results
+template <class Result>
 inline ::testing::AssertionResult assertResult(const char* e_expr, const char* r_expr,
-                                               const std::vector<Result>& expected,
+                                               const std::initializer_list<Result>& expected,
                                                const Return<Result>& ret) {
     return continueIfIsOk(r_expr, ret,
                           [&] { return assertResult(e_expr, r_expr, expected, Result{ret}); });
@@ -88,15 +92,17 @@
     return assertIsOk(expr, ret);
 }
 
+template <class Result>
 inline ::testing::AssertionResult assertOk(const char* expr, Result result) {
     return ::testing::AssertionResult(result == Result::OK)
            << "Expected success: " << expr << "\nActual: " << ::testing::PrintToString(result);
 }
 
+template <class Result>
 inline ::testing::AssertionResult assertOk(const char* expr, const Return<Result>& ret) {
     return continueIfIsOk(expr, ret, [&] { return assertOk(expr, Result{ret}); });
 }
-}
+}  // namespace detail
 
 #define ASSERT_IS_OK(ret) ASSERT_PRED_FORMAT1(detail::assertIsOk, ret)
 #define EXPECT_IS_OK(ret) EXPECT_PRED_FORMAT1(detail::assertIsOk, ret)
@@ -108,11 +114,11 @@
 #define ASSERT_RESULT(expected, ret) ASSERT_PRED_FORMAT2(detail::assertResult, expected, ret)
 #define EXPECT_RESULT(expected, ret) EXPECT_PRED_FORMAT2(detail::assertResult, expected, ret)
 
-}  // utility
-}  // test
-}  // common
-}  // audio
-}  // test
-}  // utility
+}  // namespace utility
+}  // namespace test
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
 
 #endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ASSERTOK_H
diff --git a/audio/common/test/utility/include/utility/Documentation.h b/audio/common/all-versions/test/utility/include/utility/Documentation.h
similarity index 93%
rename from audio/common/test/utility/include/utility/Documentation.h
rename to audio/common/all-versions/test/utility/include/utility/Documentation.h
index a45cad6..e10cf79 100644
--- a/audio/common/test/utility/include/utility/Documentation.h
+++ b/audio/common/all-versions/test/utility/include/utility/Documentation.h
@@ -60,11 +60,11 @@
 }
 }  // namespace doc
 
-}  // utility
-}  // test
-}  // common
-}  // audio
-}  // test
-}  // utility
+}  // namespace utility
+}  // namespace test
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
 
 #endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN
diff --git a/audio/common/test/utility/include/utility/EnvironmentTearDown.h b/audio/common/all-versions/test/utility/include/utility/EnvironmentTearDown.h
similarity index 92%
rename from audio/common/test/utility/include/utility/EnvironmentTearDown.h
rename to audio/common/all-versions/test/utility/include/utility/EnvironmentTearDown.h
index 15b0bd8..81d92c2 100644
--- a/audio/common/test/utility/include/utility/EnvironmentTearDown.h
+++ b/audio/common/all-versions/test/utility/include/utility/EnvironmentTearDown.h
@@ -48,11 +48,11 @@
     std::list<TearDownFunc> tearDowns;
 };
 
-}  // utility
-}  // test
-}  // common
-}  // audio
-}  // test
-}  // utility
+}  // namespace utility
+}  // namespace test
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
 
 #endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_ENVIRONMENT_TEARDOWN_H
diff --git a/audio/common/all-versions/test/utility/include/utility/PrettyPrintAudioTypes.h b/audio/common/all-versions/test/utility/include/utility/PrettyPrintAudioTypes.h
new file mode 100644
index 0000000..88a67e0
--- /dev/null
+++ b/audio/common/all-versions/test/utility/include/utility/PrettyPrintAudioTypes.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef AUDIO_HAL_VERSION
+#error "AUDIO_HAL_VERSION must be set before including this file."
+#endif
+
+#ifndef ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
+#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
+
+#include <iosfwd>
+#include <utility>
+
+/** @file Use HIDL generated toString methods to pretty print gtest errors
+ *        Unfortunately Gtest does not offer a template to specialize, only
+ *        overloading PrintTo.
+ *  @note that this overload can NOT be template because
+ *        the fallback is already template, resulting in ambiguity.
+ *  @note that the overload MUST be in the exact namespace
+ *        the type is declared in, as per the ADL rules.
+ */
+
+namespace android {
+namespace hardware {
+namespace audio {
+
+#define DEFINE_GTEST_PRINT_TO(T) \
+    inline void PrintTo(const T& val, ::std::ostream* os) { *os << toString(val); }
+
+namespace AUDIO_HAL_VERSION {
+DEFINE_GTEST_PRINT_TO(Result)
+}  // namespace AUDIO_HAL_VERSION
+
+namespace common {
+namespace AUDIO_HAL_VERSION {
+DEFINE_GTEST_PRINT_TO(AudioConfig)
+DEFINE_GTEST_PRINT_TO(AudioDevice)
+DEFINE_GTEST_PRINT_TO(AudioChannelMask)
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace common
+
+#undef DEFINE_GTEST_PRINT_TO
+
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
diff --git a/audio/common/test/utility/include/utility/ReturnIn.h b/audio/common/all-versions/test/utility/include/utility/ReturnIn.h
similarity index 94%
rename from audio/common/test/utility/include/utility/ReturnIn.h
rename to audio/common/all-versions/test/utility/include/utility/ReturnIn.h
index 08d502f..2b92a21 100644
--- a/audio/common/test/utility/include/utility/ReturnIn.h
+++ b/audio/common/all-versions/test/utility/include/utility/ReturnIn.h
@@ -65,11 +65,11 @@
     return {ts...};
 }
 
-}  // utility
-}  // test
-}  // common
-}  // audio
-}  // test
-}  // utility
+}  // namespace utility
+}  // namespace test
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
 
 #endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_RETURN_IN_H
diff --git a/audio/common/test/utility/include/utility/ValidateXml.h b/audio/common/all-versions/test/utility/include/utility/ValidateXml.h
similarity index 95%
rename from audio/common/test/utility/include/utility/ValidateXml.h
rename to audio/common/all-versions/test/utility/include/utility/ValidateXml.h
index d718839..95080d1 100644
--- a/audio/common/test/utility/include/utility/ValidateXml.h
+++ b/audio/common/all-versions/test/utility/include/utility/ValidateXml.h
@@ -70,11 +70,11 @@
         ::android::hardware::audio::common::test::utility::validateXmlMultipleLocations,    \
         xmlFileName, xmlFileLocations, xsdFilePath)
 
-}  // utility
-}  // test
-}  // common
-}  // audio
-}  // test
-}  // utility
+}  // namespace utility
+}  // namespace test
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
 
 #endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_VALIDATE_XML_H
diff --git a/audio/common/test/utility/src/ValidateXml.cpp b/audio/common/all-versions/test/utility/src/ValidateXml.cpp
similarity index 97%
rename from audio/common/test/utility/src/ValidateXml.cpp
rename to audio/common/all-versions/test/utility/src/ValidateXml.cpp
index 30dec30..5030af5 100644
--- a/audio/common/test/utility/src/ValidateXml.cpp
+++ b/audio/common/all-versions/test/utility/src/ValidateXml.cpp
@@ -163,9 +163,9 @@
            << "\n                 Which is: " << ::testing::PrintToString(xmlFileLocations);
 }
 
-}  // utility
-}  // test
-}  // common
-}  // audio
-}  // test
-}  // utility
+}  // namespace utility
+}  // namespace test
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/common/all-versions/util/Android.bp b/audio/common/all-versions/util/Android.bp
new file mode 100644
index 0000000..5d33a3a
--- /dev/null
+++ b/audio/common/all-versions/util/Android.bp
@@ -0,0 +1,10 @@
+cc_library_headers {
+    name: "android.hardware.audio.common.util@all-versions",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+    },
+
+    export_include_dirs: ["include"],
+}
diff --git a/audio/common/all-versions/util/include/common/all-versions/IncludeGuard.h b/audio/common/all-versions/util/include/common/all-versions/IncludeGuard.h
new file mode 100644
index 0000000..2d54816
--- /dev/null
+++ b/audio/common/all-versions/util/include/common/all-versions/IncludeGuard.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef AUDIO_HAL_VERSION
+#error "AUDIO_HAL_VERSION must be set before including this file."
+#endif
diff --git a/audio/common/test/OWNERS b/audio/common/test/OWNERS
deleted file mode 100644
index 8711a9f..0000000
--- a/audio/common/test/OWNERS
+++ /dev/null
@@ -1,5 +0,0 @@
-elaurent@google.com
-krocard@google.com
-mnaganov@google.com
-yim@google.com
-zhuoyao@google.com
\ No newline at end of file
diff --git a/audio/common/test/utility/OWNERS b/audio/common/test/utility/OWNERS
deleted file mode 100644
index 6fdc97c..0000000
--- a/audio/common/test/utility/OWNERS
+++ /dev/null
@@ -1,3 +0,0 @@
-elaurent@google.com
-krocard@google.com
-mnaganov@google.com
diff --git a/audio/common/test/utility/include/utility/PrettyPrintAudioTypes.h b/audio/common/test/utility/include/utility/PrettyPrintAudioTypes.h
deleted file mode 100644
index 37059e7..0000000
--- a/audio/common/test/utility/include/utility/PrettyPrintAudioTypes.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (C) 2017 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.
- */
-
-#ifndef ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
-#define ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
-
-#include <iosfwd>
-#include <type_traits>
-
-#include <android/hardware/audio/2.0/types.h>
-#include <android/hardware/audio/common/2.0/types.h>
-
-/** @file Use HIDL generated toString methods to pretty print gtest errors */
-
-namespace prettyPrintAudioTypesDetail {
-
-// Print the value of an enum as hex
-template <class Enum>
-inline void printUnderlyingValue(Enum value, ::std::ostream* os) {
-    *os << std::hex << " (0x" << static_cast<std::underlying_type_t<Enum>>(value) << ")";
-}
-
-}  // namespace detail
-
-namespace android {
-namespace hardware {
-namespace audio {
-namespace V2_0 {
-
-inline void PrintTo(const Result& result, ::std::ostream* os) {
-    *os << toString(result);
-    prettyPrintAudioTypesDetail::printUnderlyingValue(result, os);
-}
-
-}  // namespace V2_0
-namespace common {
-namespace V2_0 {
-
-inline void PrintTo(const AudioConfig& config, ::std::ostream* os) {
-    *os << toString(config);
-}
-
-inline void PrintTo(const AudioDevice& device, ::std::ostream* os) {
-    *os << toString(device);
-    prettyPrintAudioTypesDetail::printUnderlyingValue(device, os);
-}
-
-inline void PrintTo(const AudioChannelMask& channelMask, ::std::ostream* os) {
-    *os << toString(channelMask);
-    prettyPrintAudioTypesDetail::printUnderlyingValue(channelMask, os);
-}
-
-}  // namespace V2_0
-}  // namespace common
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_COMMON_TEST_UTILITY_PRETTY_PRINT_AUDIO_TYPES_H
diff --git a/audio/core/2.0/default/Android.bp b/audio/core/2.0/default/Android.bp
new file mode 100644
index 0000000..9847886
--- /dev/null
+++ b/audio/core/2.0/default/Android.bp
@@ -0,0 +1,49 @@
+cc_library_shared {
+    name: "android.hardware.audio@2.0-impl",
+    relative_install_path: "hw",
+    proprietary: true,
+    vendor: true,
+    srcs: [
+        "Conversions.cpp",
+        "Device.cpp",
+        "DevicesFactory.cpp",
+        "ParametersUtil.cpp",
+        "PrimaryDevice.cpp",
+        "Stream.cpp",
+        "StreamIn.cpp",
+        "StreamOut.cpp",
+    ],
+
+    defaults: ["hidl_defaults"],
+
+    export_include_dirs: ["include"],
+
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libfmq",
+        "libhardware",
+        "libhidlbase",
+        "libhidltransport",
+        "liblog",
+        "libutils",
+        "android.hardware.audio@2.0",
+        "android.hardware.audio.common@2.0",
+        "android.hardware.audio.common@2.0-util",
+        "android.hardware.audio.common-util",
+    ],
+
+    header_libs: [
+        "android.hardware.audio.common.util@all-versions",
+        "android.hardware.audio.core@all-versions-impl",
+        "libaudioclient_headers",
+        "libaudio_system_headers",
+        "libhardware_headers",
+        "libmedia_headers",
+    ],
+
+    whole_static_libs: [
+        "libmedia_helper",
+    ],
+
+}
diff --git a/audio/core/2.0/default/Conversions.cpp b/audio/core/2.0/default/Conversions.cpp
new file mode 100644
index 0000000..6c32090
--- /dev/null
+++ b/audio/core/2.0/default/Conversions.cpp
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2017 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 "core/2.0/default/Conversions.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/Conversions.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/core/2.0/default/Device.cpp b/audio/core/2.0/default/Device.cpp
new file mode 100644
index 0000000..221ea5c
--- /dev/null
+++ b/audio/core/2.0/default/Device.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2017 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 "DeviceHAL"
+
+#include "core/2.0/default/Device.h"
+#include <HidlUtils.h>
+#include "core/2.0/default/Conversions.h"
+#include "core/2.0/default/StreamIn.h"
+#include "core/2.0/default/StreamOut.h"
+#include "core/all-versions/default/Util.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/Device.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/core/2.0/default/DevicesFactory.cpp b/audio/core/2.0/default/DevicesFactory.cpp
new file mode 100644
index 0000000..65a9ccd
--- /dev/null
+++ b/audio/core/2.0/default/DevicesFactory.cpp
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2017 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 "DevicesFactoryHAL"
+
+#include "core/2.0/default/DevicesFactory.h"
+#include "core/2.0/default/Device.h"
+#include "core/2.0/default/PrimaryDevice.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/DevicesFactory.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/common/2.0/default/OWNERS b/audio/core/2.0/default/OWNERS
similarity index 100%
rename from audio/common/2.0/default/OWNERS
rename to audio/core/2.0/default/OWNERS
diff --git a/audio/core/2.0/default/ParametersUtil.cpp b/audio/core/2.0/default/ParametersUtil.cpp
new file mode 100644
index 0000000..33a3ad9
--- /dev/null
+++ b/audio/core/2.0/default/ParametersUtil.cpp
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2017 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 "core/2.0/default/ParametersUtil.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/ParametersUtil.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/core/2.0/default/PrimaryDevice.cpp b/audio/core/2.0/default/PrimaryDevice.cpp
new file mode 100644
index 0000000..ce57403
--- /dev/null
+++ b/audio/core/2.0/default/PrimaryDevice.cpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2017 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 "PrimaryDeviceHAL"
+
+#include "core/2.0/default/PrimaryDevice.h"
+#include "core/all-versions/default/Util.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/PrimaryDevice.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/core/2.0/default/Stream.cpp b/audio/core/2.0/default/Stream.cpp
new file mode 100644
index 0000000..69ee659
--- /dev/null
+++ b/audio/core/2.0/default/Stream.cpp
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2017 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 "StreamHAL"
+
+#include "core/2.0/default/Stream.h"
+#include "common/all-versions/default/EffectMap.h"
+#include "core/2.0/default/Conversions.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/Stream.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/core/2.0/default/StreamIn.cpp b/audio/core/2.0/default/StreamIn.cpp
new file mode 100644
index 0000000..6b8776e
--- /dev/null
+++ b/audio/core/2.0/default/StreamIn.cpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2017 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 "StreamInHAL"
+
+#include "core/2.0/default/StreamIn.h"
+#include "core/all-versions/default/Util.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/StreamIn.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/core/2.0/default/StreamOut.cpp b/audio/core/2.0/default/StreamOut.cpp
new file mode 100644
index 0000000..7f1461a
--- /dev/null
+++ b/audio/core/2.0/default/StreamOut.cpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2017 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 "StreamOutHAL"
+
+#include "core/2.0/default/StreamOut.h"
+#include "core/all-versions/default/Util.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/StreamOut.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/core/2.0/default/include/core/2.0/default/Conversions.h b/audio/core/2.0/default/include/core/2.0/default/Conversions.h
new file mode 100644
index 0000000..b3a6ea8
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/Conversions.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_CONVERSIONS_H_
+#define ANDROID_HARDWARE_AUDIO_V2_0_CONVERSIONS_H_
+
+#include <android/hardware/audio/2.0/types.h>
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/Conversions.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_CONVERSIONS_H_
diff --git a/audio/core/2.0/default/include/core/2.0/default/Device.h b/audio/core/2.0/default/include/core/2.0/default/Device.h
new file mode 100644
index 0000000..3ec7464
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/Device.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_DEVICE_H
+#define ANDROID_HARDWARE_AUDIO_V2_0_DEVICE_H
+
+#include <android/hardware/audio/2.0/IDevice.h>
+
+#include "ParametersUtil.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/Device.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_DEVICE_H
diff --git a/audio/core/2.0/default/include/core/2.0/default/DevicesFactory.h b/audio/core/2.0/default/include/core/2.0/default/DevicesFactory.h
new file mode 100644
index 0000000..8e8ee88
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/DevicesFactory.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_DEVICESFACTORY_H
+#define ANDROID_HARDWARE_AUDIO_V2_0_DEVICESFACTORY_H
+
+#include <android/hardware/audio/2.0/IDevicesFactory.h>
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/DevicesFactory.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_DEVICESFACTORY_H
diff --git a/audio/core/2.0/default/include/core/2.0/default/ParametersUtil.h b/audio/core/2.0/default/include/core/2.0/default/ParametersUtil.h
new file mode 100644
index 0000000..a5c1c78
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/ParametersUtil.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_PARAMETERS_UTIL_H_
+#define ANDROID_HARDWARE_AUDIO_V2_0_PARAMETERS_UTIL_H_
+
+#include <android/hardware/audio/2.0/types.h>
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/ParametersUtil.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_PARAMETERS_UTIL_H_
diff --git a/audio/core/2.0/default/include/core/2.0/default/PrimaryDevice.h b/audio/core/2.0/default/include/core/2.0/default/PrimaryDevice.h
new file mode 100644
index 0000000..f898597
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/PrimaryDevice.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_PRIMARYDEVICE_H
+#define ANDROID_HARDWARE_AUDIO_V2_0_PRIMARYDEVICE_H
+
+#include <android/hardware/audio/2.0/IPrimaryDevice.h>
+
+#include "Device.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/PrimaryDevice.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_PRIMARYDEVICE_H
diff --git a/audio/core/2.0/default/include/core/2.0/default/Stream.h b/audio/core/2.0/default/include/core/2.0/default/Stream.h
new file mode 100644
index 0000000..a2d8456
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/Stream.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_STREAM_H
+#define ANDROID_HARDWARE_AUDIO_V2_0_STREAM_H
+
+#include <android/hardware/audio/2.0/IStream.h>
+
+#include "ParametersUtil.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/Stream.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_STREAM_H
diff --git a/audio/core/2.0/default/include/core/2.0/default/StreamIn.h b/audio/core/2.0/default/include/core/2.0/default/StreamIn.h
new file mode 100644
index 0000000..c36abbd
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/StreamIn.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
+#define ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
+
+#include <android/hardware/audio/2.0/IStreamIn.h>
+
+#include "Device.h"
+#include "Stream.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/StreamIn.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_STREAMIN_H
diff --git a/audio/core/2.0/default/include/core/2.0/default/StreamOut.h b/audio/core/2.0/default/include/core/2.0/default/StreamOut.h
new file mode 100644
index 0000000..ab35687
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/StreamOut.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_STREAMOUT_H
+#define ANDROID_HARDWARE_AUDIO_V2_0_STREAMOUT_H
+
+#include <android/hardware/audio/2.0/IStreamOut.h>
+
+#include "Device.h"
+#include "Stream.h"
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/StreamOut.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_STREAMOUT_H
diff --git a/audio/2.0/vts/OWNERS b/audio/core/2.0/vts/OWNERS
similarity index 100%
rename from audio/2.0/vts/OWNERS
rename to audio/core/2.0/vts/OWNERS
diff --git a/audio/2.0/vts/functional/Android.bp b/audio/core/2.0/vts/functional/Android.bp
similarity index 100%
rename from audio/2.0/vts/functional/Android.bp
rename to audio/core/2.0/vts/functional/Android.bp
diff --git a/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp b/audio/core/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
similarity index 78%
rename from audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
rename to audio/core/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
index fd175de..6c09da7 100644
--- a/audio/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
+++ b/audio/core/2.0/vts/functional/AudioPrimaryHidlHalTest.cpp
@@ -20,6 +20,7 @@
 #include <cmath>
 #include <cstddef>
 #include <cstdio>
+#include <initializer_list>
 #include <limits>
 #include <string>
 #include <vector>
@@ -40,9 +41,11 @@
 #include "utility/AssertOk.h"
 #include "utility/Documentation.h"
 #include "utility/EnvironmentTearDown.h"
+#define AUDIO_HAL_VERSION V2_0
 #include "utility/PrettyPrintAudioTypes.h"
 #include "utility/ReturnIn.h"
 
+using std::initializer_list;
 using std::string;
 using std::to_string;
 using std::vector;
@@ -106,8 +109,7 @@
 
         if (devicesFactory == nullptr) {
             environment->registerTearDown([] { devicesFactory.clear(); });
-            devicesFactory = ::testing::VtsHalHidlTargetTestBase::getService<
-                IDevicesFactory>();
+            devicesFactory = ::testing::VtsHalHidlTargetTestBase::getService<IDevicesFactory>();
         }
         ASSERT_TRUE(devicesFactory != nullptr);
     }
@@ -126,8 +128,7 @@
     doc::test("test passing an invalid parameter to openDevice");
     IDevicesFactory::Result result;
     sp<IDevice> device;
-    ASSERT_OK(devicesFactory->openDevice(IDevicesFactory::Device(-1),
-                                         returnIn(result, device)));
+    ASSERT_OK(devicesFactory->openDevice(IDevicesFactory::Device(-1), returnIn(result, device)));
     ASSERT_EQ(IDevicesFactory::Result::INVALID_ARGUMENTS, result);
     ASSERT_TRUE(device == nullptr);
 }
@@ -146,9 +147,8 @@
         if (device == nullptr) {
             IDevicesFactory::Result result;
             sp<IDevice> baseDevice;
-            ASSERT_OK(
-                devicesFactory->openDevice(IDevicesFactory::Device::PRIMARY,
-                                           returnIn(result, baseDevice)));
+            ASSERT_OK(devicesFactory->openDevice(IDevicesFactory::Device::PRIMARY,
+                                                 returnIn(result, baseDevice)));
             ASSERT_OK(result);
             ASSERT_TRUE(baseDevice != nullptr);
 
@@ -182,10 +182,8 @@
    protected:
     /** Test a property getter and setter. */
     template <class Getter, class Setter>
-    void testAccessors(const string& propertyName,
-                       const vector<Property>& valuesToTest, Setter setter,
-                       Getter getter,
-                       const vector<Property>& invalidValues = {}) {
+    void testAccessors(const string& propertyName, const vector<Property>& valuesToTest,
+                       Setter setter, Getter getter, const vector<Property>& invalidValues = {}) {
         Property initialValue;  // Save initial value to restore it at the end
                                 // of the test
         ASSERT_OK((device.get()->*getter)(returnIn(res, initialValue)));
@@ -203,21 +201,17 @@
         }
 
         for (Property invalidValue : invalidValues) {
-            SCOPED_TRACE("Try to set " + propertyName +
-                         " with the invalid value " +
+            SCOPED_TRACE("Try to set " + propertyName + " with the invalid value " +
                          testing::PrintToString(invalidValue));
-            EXPECT_RESULT(Result::INVALID_ARGUMENTS,
-                          (device.get()->*setter)(invalidValue));
+            EXPECT_RESULT(Result::INVALID_ARGUMENTS, (device.get()->*setter)(invalidValue));
         }
 
-        ASSERT_OK(
-            (device.get()->*setter)(initialValue));  // restore initial value
+        ASSERT_OK((device.get()->*setter)(initialValue));  // restore initial value
     }
 
     /** Test the getter and setter of an optional feature. */
     template <class Getter, class Setter>
-    void testOptionalAccessors(const string& propertyName,
-                               const vector<Property>& valuesToTest,
+    void testOptionalAccessors(const string& propertyName, const vector<Property>& valuesToTest,
                                Setter setter, Getter getter,
                                const vector<Property>& invalidValues = {}) {
         doc::test("Test the optional " + propertyName + " getters and setter");
@@ -232,8 +226,7 @@
             ASSERT_OK(res);  // If it is supported it must succeed
         }
         // The feature is supported, test it
-        testAccessors(propertyName, valuesToTest, setter, getter,
-                      invalidValues);
+        testAccessors(propertyName, valuesToTest, setter, getter, invalidValues);
     }
 };
 
@@ -241,8 +234,7 @@
 
 TEST_F(BoolAccessorPrimaryHidlTest, MicMuteTest) {
     doc::test("Check that the mic can be muted and unmuted");
-    testAccessors("mic mute", {true, false, true}, &IDevice::setMicMute,
-                  &IDevice::getMicMute);
+    testAccessors("mic mute", {true, false, true}, &IDevice::setMicMute, &IDevice::getMicMute);
     // TODO: check that the mic is really muted (all sample are 0)
 }
 
@@ -250,18 +242,17 @@
     doc::test(
         "If master mute is supported, try to mute and unmute the master "
         "output");
-    testOptionalAccessors("master mute", {true, false, true},
-                          &IDevice::setMasterMute, &IDevice::getMasterMute);
+    testOptionalAccessors("master mute", {true, false, true}, &IDevice::setMasterMute,
+                          &IDevice::getMasterMute);
     // TODO: check that the master volume is really muted
 }
 
 using FloatAccessorPrimaryHidlTest = AccessorPrimaryHidlTest<float>;
 TEST_F(FloatAccessorPrimaryHidlTest, MasterVolumeTest) {
     doc::test("Test the master volume if supported");
-    testOptionalAccessors("master volume", {0, 0.5, 1},
-                          &IDevice::setMasterVolume, &IDevice::getMasterVolume,
-                          {-0.1, 1.1, NAN, INFINITY, -INFINITY,
-                           1 + std::numeric_limits<float>::epsilon()});
+    testOptionalAccessors(
+        "master volume", {0, 0.5, 1}, &IDevice::setMasterVolume, &IDevice::getMasterVolume,
+        {-0.1, 1.1, NAN, INFINITY, -INFINITY, 1 + std::numeric_limits<float>::epsilon()});
     // TODO: check that the master volume is really changed
 }
 
@@ -300,17 +291,14 @@
    public:
     // Cache result ?
     static const vector<AudioConfig> getRequiredSupportPlaybackAudioConfig() {
-        return combineAudioConfig(
-            {AudioChannelMask::OUT_STEREO, AudioChannelMask::OUT_MONO},
-            {8000, 11025, 16000, 22050, 32000, 44100},
-            {AudioFormat::PCM_16_BIT});
+        return combineAudioConfig({AudioChannelMask::OUT_STEREO, AudioChannelMask::OUT_MONO},
+                                  {8000, 11025, 16000, 22050, 32000, 44100},
+                                  {AudioFormat::PCM_16_BIT});
     }
 
-    static const vector<AudioConfig>
-    getRecommendedSupportPlaybackAudioConfig() {
-        return combineAudioConfig(
-            {AudioChannelMask::OUT_STEREO, AudioChannelMask::OUT_MONO},
-            {24000, 48000}, {AudioFormat::PCM_16_BIT});
+    static const vector<AudioConfig> getRecommendedSupportPlaybackAudioConfig() {
+        return combineAudioConfig({AudioChannelMask::OUT_STEREO, AudioChannelMask::OUT_MONO},
+                                  {24000, 48000}, {AudioFormat::PCM_16_BIT});
     }
 
     static const vector<AudioConfig> getSupportedPlaybackAudioConfig() {
@@ -320,8 +308,7 @@
     }
 
     static const vector<AudioConfig> getRequiredSupportCaptureAudioConfig() {
-        return combineAudioConfig({AudioChannelMask::IN_MONO},
-                                  {8000, 11025, 16000, 44100},
+        return combineAudioConfig({AudioChannelMask::IN_MONO}, {8000, 11025, 16000, 44100},
                                   {AudioFormat::PCM_16_BIT});
     }
     static const vector<AudioConfig> getRecommendedSupportCaptureAudioConfig() {
@@ -335,9 +322,9 @@
     }
 
    private:
-    static const vector<AudioConfig> combineAudioConfig(
-        vector<AudioChannelMask> channelMasks, vector<uint32_t> sampleRates,
-        vector<AudioFormat> formats) {
+    static const vector<AudioConfig> combineAudioConfig(vector<AudioChannelMask> channelMasks,
+                                                        vector<uint32_t> sampleRates,
+                                                        vector<AudioFormat> formats) {
         vector<AudioConfig> configs;
         for (auto channelMask : channelMasks) {
             for (auto sampleRate : sampleRates) {
@@ -361,8 +348,7 @@
  * As the only parameter changing are channel mask and sample rate,
  * only print those ones in the test name.
  */
-static string generateTestName(
-    const testing::TestParamInfo<AudioConfig>& info) {
+static string generateTestName(const testing::TestParamInfo<AudioConfig>& info) {
     const AudioConfig& config = info.param;
     return to_string(info.index) + "__" + to_string(config.sampleRateHz) + "_" +
            // "MONO" is more clear than "FRONT_LEFT"
@@ -380,15 +366,12 @@
 // android.hardware.microphone
 //        how to get this value ? is it a property ???
 
-class AudioCaptureConfigPrimaryTest
-    : public AudioConfigPrimaryTest,
-      public ::testing::WithParamInterface<AudioConfig> {
+class AudioCaptureConfigPrimaryTest : public AudioConfigPrimaryTest,
+                                      public ::testing::WithParamInterface<AudioConfig> {
    protected:
-    void inputBufferSizeTest(const AudioConfig& audioConfig,
-                             bool supportRequired) {
+    void inputBufferSizeTest(const AudioConfig& audioConfig, bool supportRequired) {
         uint64_t bufferSize;
-        ASSERT_OK(
-            device->getInputBufferSize(audioConfig, returnIn(res, bufferSize)));
+        ASSERT_OK(device->getInputBufferSize(audioConfig, returnIn(res, bufferSize)));
 
         switch (res) {
             case Result::INVALID_ARGUMENTS:
@@ -400,8 +383,7 @@
                 EXPECT_GT(bufferSize, uint64_t(0));
                 break;
             default:
-                FAIL() << "Invalid return status: "
-                       << ::testing::PrintToString(res);
+                FAIL() << "Invalid return status: " << ::testing::PrintToString(res);
         }
     }
 };
@@ -417,13 +399,11 @@
 }
 INSTANTIATE_TEST_CASE_P(
     RequiredInputBufferSize, RequiredInputBufferSizeTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getRequiredSupportCaptureAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getRequiredSupportCaptureAudioConfig()),
     &generateTestName);
 INSTANTIATE_TEST_CASE_P(
     SupportedInputBufferSize, RequiredInputBufferSizeTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getSupportedCaptureAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getSupportedCaptureAudioConfig()),
     &generateTestName);
 
 // Test that the recommended capture config are supported or lead to a
@@ -437,8 +417,7 @@
 }
 INSTANTIATE_TEST_CASE_P(
     RecommendedCaptureAudioConfigSupport, OptionalInputBufferSizeTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getRecommendedSupportCaptureAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getRecommendedSupportCaptureAudioConfig()),
     &generateTestName);
 
 //////////////////////////////////////////////////////////////////////////////
@@ -530,11 +509,9 @@
     void testOpen(Open openStream, const AudioConfig& config) {
         // FIXME: Open a stream without an IOHandle
         //        This is not required to be accepted by hal implementations
-        AudioIoHandle ioHandle =
-            (AudioIoHandle)AudioHandleConsts::AUDIO_IO_HANDLE_NONE;
+        AudioIoHandle ioHandle = (AudioIoHandle)AudioHandleConsts::AUDIO_IO_HANDLE_NONE;
         AudioConfig suggestedConfig{};
-        ASSERT_OK(openStream(ioHandle, config,
-                             returnIn(res, stream, suggestedConfig)));
+        ASSERT_OK(openStream(ioHandle, config, returnIn(res, stream, suggestedConfig)));
 
         // TODO: only allow failure for RecommendedPlaybackAudioConfig
         switch (res) {
@@ -547,17 +524,15 @@
                 AudioConfig suggestedConfigRetry;
                 // Could not open stream with config, try again with the
                 // suggested one
-                ASSERT_OK(
-                    openStream(ioHandle, suggestedConfig,
-                               returnIn(res, stream, suggestedConfigRetry)));
+                ASSERT_OK(openStream(ioHandle, suggestedConfig,
+                                     returnIn(res, stream, suggestedConfigRetry)));
                 // This time it must succeed
                 ASSERT_OK(res);
                 ASSERT_TRUE(stream != nullptr);
                 audioConfig = suggestedConfig;
                 break;
             default:
-                FAIL() << "Invalid return status: "
-                       << ::testing::PrintToString(res);
+                FAIL() << "Invalid return status: " << ::testing::PrintToString(res);
         }
         open = true;
     }
@@ -588,12 +563,10 @@
         ASSERT_NO_FATAL_FAILURE(OpenStreamTest::SetUp());  // setup base
         address.device = AudioDevice::OUT_DEFAULT;
         const AudioConfig& config = GetParam();
-        AudioOutputFlag flags =
-            AudioOutputFlag::NONE;  // TODO: test all flag combination
+        AudioOutputFlag flags = AudioOutputFlag::NONE;  // TODO: test all flag combination
         testOpen(
             [&](AudioIoHandle handle, AudioConfig config, auto cb) {
-                return device->openOutputStream(handle, address, config, flags,
-                                                cb);
+                return device->openOutputStream(handle, address, config, flags, cb);
             },
             config);
     }
@@ -606,19 +579,16 @@
 }
 INSTANTIATE_TEST_CASE_P(
     RequiredOutputStreamConfigSupport, OutputStreamTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getRequiredSupportPlaybackAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getRequiredSupportPlaybackAudioConfig()),
     &generateTestName);
 INSTANTIATE_TEST_CASE_P(
     SupportedOutputStreamConfig, OutputStreamTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getSupportedPlaybackAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getSupportedPlaybackAudioConfig()),
     &generateTestName);
 
 INSTANTIATE_TEST_CASE_P(
     RecommendedOutputStreamConfigSupport, OutputStreamTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getRecommendedSupportPlaybackAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getRecommendedSupportPlaybackAudioConfig()),
     &generateTestName);
 
 ////////////////////////////// openInputStream //////////////////////////////
@@ -628,14 +598,11 @@
         ASSERT_NO_FATAL_FAILURE(OpenStreamTest::SetUp());  // setup base
         address.device = AudioDevice::IN_DEFAULT;
         const AudioConfig& config = GetParam();
-        AudioInputFlag flags =
-            AudioInputFlag::NONE;  // TODO: test all flag combination
-        AudioSource source =
-            AudioSource::DEFAULT;  // TODO: test all flag combination
+        AudioInputFlag flags = AudioInputFlag::NONE;  // TODO: test all flag combination
+        AudioSource source = AudioSource::DEFAULT;    // TODO: test all flag combination
         testOpen(
             [&](AudioIoHandle handle, AudioConfig config, auto cb) {
-                return device->openInputStream(handle, address, config, flags,
-                                               source, cb);
+                return device->openInputStream(handle, address, config, flags, source, cb);
             },
             config);
     }
@@ -649,19 +616,16 @@
 }
 INSTANTIATE_TEST_CASE_P(
     RequiredInputStreamConfigSupport, InputStreamTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getRequiredSupportCaptureAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getRequiredSupportCaptureAudioConfig()),
     &generateTestName);
 INSTANTIATE_TEST_CASE_P(
     SupportedInputStreamConfig, InputStreamTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getSupportedCaptureAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getSupportedCaptureAudioConfig()),
     &generateTestName);
 
 INSTANTIATE_TEST_CASE_P(
     RecommendedInputStreamConfigSupport, InputStreamTest,
-    ::testing::ValuesIn(
-        AudioConfigPrimaryTest::getRecommendedSupportCaptureAudioConfig()),
+    ::testing::ValuesIn(AudioConfigPrimaryTest::getRecommendedSupportCaptureAudioConfig()),
     &generateTestName);
 
 //////////////////////////////////////////////////////////////////////////////
@@ -691,10 +655,8 @@
         code;                                          \
     }
 
-TEST_IO_STREAM(
-    GetFrameCount,
-    "Check that the stream frame count == the one it was opened with",
-    ASSERT_EQ(audioConfig.frameCount, extract(stream->getFrameCount())))
+TEST_IO_STREAM(GetFrameCount, "Check that the stream frame count == the one it was opened with",
+               ASSERT_EQ(audioConfig.frameCount, extract(stream->getFrameCount())))
 
 TEST_IO_STREAM(GetSampleRate, "Check that the stream sample rate == the one it was opened with",
                ASSERT_EQ(audioConfig.sampleRateHz, extract(stream->getSampleRate())))
@@ -702,19 +664,15 @@
 TEST_IO_STREAM(GetChannelMask, "Check that the stream channel mask == the one it was opened with",
                ASSERT_EQ(audioConfig.channelMask, extract(stream->getChannelMask())))
 
-TEST_IO_STREAM(GetFormat,
-               "Check that the stream format == the one it was opened with",
+TEST_IO_STREAM(GetFormat, "Check that the stream format == the one it was opened with",
                ASSERT_EQ(audioConfig.format, extract(stream->getFormat())))
 
 // TODO: for now only check that the framesize is not incoherent
-TEST_IO_STREAM(GetFrameSize,
-               "Check that the stream frame size == the one it was opened with",
+TEST_IO_STREAM(GetFrameSize, "Check that the stream frame size == the one it was opened with",
                ASSERT_GT(extract(stream->getFrameSize()), 0U))
 
-TEST_IO_STREAM(GetBufferSize,
-               "Check that the stream buffer size== the one it was opened with",
-               ASSERT_GE(extract(stream->getBufferSize()),
-                         extract(stream->getFrameSize())));
+TEST_IO_STREAM(GetBufferSize, "Check that the stream buffer size== the one it was opened with",
+               ASSERT_GE(extract(stream->getBufferSize()), extract(stream->getFrameSize())));
 
 template <class Property, class CapabilityGetter>
 static void testCapabilityGetter(const string& name, IStream* stream,
@@ -754,29 +712,24 @@
     }
 }
 
-TEST_IO_STREAM(SupportedSampleRate,
-               "Check that the stream sample rate is declared as supported",
+TEST_IO_STREAM(SupportedSampleRate, "Check that the stream sample rate is declared as supported",
                testCapabilityGetter("getSupportedSampleRate", stream.get(),
-                                    &IStream::getSupportedSampleRates,
-                                    &IStream::getSampleRate,
+                                    &IStream::getSupportedSampleRates, &IStream::getSampleRate,
                                     &IStream::setSampleRate,
                                     // getSupportedSampleRate returns the native sampling rates,
                                     // (the sampling rates that can be played without resampling)
                                     // but other sampling rates can be supported by the HAL.
                                     false))
 
-TEST_IO_STREAM(SupportedChannelMask,
-               "Check that the stream channel mask is declared as supported",
+TEST_IO_STREAM(SupportedChannelMask, "Check that the stream channel mask is declared as supported",
                testCapabilityGetter("getSupportedChannelMask", stream.get(),
-                                    &IStream::getSupportedChannelMasks,
-                                    &IStream::getChannelMask,
+                                    &IStream::getSupportedChannelMasks, &IStream::getChannelMask,
                                     &IStream::setChannelMask))
 
-TEST_IO_STREAM(SupportedFormat,
-               "Check that the stream format is declared as supported",
+TEST_IO_STREAM(SupportedFormat, "Check that the stream format is declared as supported",
                testCapabilityGetter("getSupportedFormat", stream.get(),
-                                    &IStream::getSupportedFormats,
-                                    &IStream::getFormat, &IStream::setFormat))
+                                    &IStream::getSupportedFormats, &IStream::getFormat,
+                                    &IStream::setFormat))
 
 static void testGetDevice(IStream* stream, AudioDevice expectedDevice) {
     // Unfortunately the interface does not allow the implementation to return
@@ -790,27 +743,22 @@
         << "\n  Actual: " << ::testing::PrintToString(device);
 }
 
-TEST_IO_STREAM(GetDevice,
-               "Check that the stream device == the one it was opened with",
-               areAudioPatchesSupported()
-                   ? doc::partialTest("Audio patches are supported")
-                   : testGetDevice(stream.get(), address.device))
+TEST_IO_STREAM(GetDevice, "Check that the stream device == the one it was opened with",
+               areAudioPatchesSupported() ? doc::partialTest("Audio patches are supported")
+                                          : testGetDevice(stream.get(), address.device))
 
 static void testSetDevice(IStream* stream, const DeviceAddress& address) {
     DeviceAddress otherAddress = address;
-    otherAddress.device = (address.device & AudioDevice::BIT_IN) == 0
-                              ? AudioDevice::OUT_SPEAKER
-                              : AudioDevice::IN_BUILTIN_MIC;
+    otherAddress.device = (address.device & AudioDevice::BIT_IN) == 0 ? AudioDevice::OUT_SPEAKER
+                                                                      : AudioDevice::IN_BUILTIN_MIC;
     EXPECT_OK(stream->setDevice(otherAddress));
 
     ASSERT_OK(stream->setDevice(address));  // Go back to the original value
 }
 
-TEST_IO_STREAM(
-    SetDevice,
-    "Check that the stream can be rerouted to SPEAKER or BUILTIN_MIC",
-    areAudioPatchesSupported() ? doc::partialTest("Audio patches are supported")
-                               : testSetDevice(stream.get(), address))
+TEST_IO_STREAM(SetDevice, "Check that the stream can be rerouted to SPEAKER or BUILTIN_MIC",
+               areAudioPatchesSupported() ? doc::partialTest("Audio patches are supported")
+                                          : testSetDevice(stream.get(), address))
 
 static void testGetAudioProperties(IStream* stream, AudioConfig expectedConfig) {
     uint32_t sampleRateHz;
@@ -833,8 +781,7 @@
 static void testConnectedState(IStream* stream) {
     DeviceAddress address = {};
     using AD = AudioDevice;
-    for (auto device :
-         {AD::OUT_HDMI, AD::OUT_WIRED_HEADPHONE, AD::IN_USB_HEADSET}) {
+    for (auto device : {AD::OUT_HDMI, AD::OUT_WIRED_HEADPHONE, AD::IN_USB_HEADSET}) {
         address.device = device;
 
         ASSERT_OK(stream->setConnectedState(address, true));
@@ -846,17 +793,15 @@
                "deconnection",
                testConnectedState(stream.get()))
 
-static auto invalidArgsOrNotSupportedOrOK = {Result::INVALID_ARGUMENTS,
-                                             Result::NOT_SUPPORTED, Result::OK};
+static auto invalidArgsOrNotSupportedOrOK = {Result::INVALID_ARGUMENTS, Result::NOT_SUPPORTED,
+                                             Result::OK};
 TEST_IO_STREAM(SetHwAvSync, "Try to set hardware sync to an invalid value",
-               ASSERT_RESULT(invalidArgsOrNotSupportedOrOK,
-                             stream->setHwAvSync(666)))
+               ASSERT_RESULT(invalidArgsOrNotSupportedOrOK, stream->setHwAvSync(666)))
 
-TEST_IO_STREAM(GetHwAvSync, "Get hardware sync can not fail",
-               ASSERT_IS_OK(device->getHwAvSync()));
+TEST_IO_STREAM(GetHwAvSync, "Get hardware sync can not fail", ASSERT_IS_OK(device->getHwAvSync()));
 
 static void checkGetNoParameter(IStream* stream, hidl_vec<hidl_string> keys,
-                                vector<Result> expectedResults) {
+                                initializer_list<Result> expectedResults) {
     hidl_vec<ParameterValue> parameters;
     Result res;
     ASSERT_OK(stream->getParameters(keys, returnIn(res, parameters)));
@@ -875,30 +820,23 @@
 TEST_IO_STREAM(getEmptySetParameter, "Retrieve the values of an empty set",
                checkGetNoParameter(stream.get(), {} /* keys */, {Result::OK}))
 
-TEST_IO_STREAM(getNonExistingParameter,
-               "Retrieve the values of an non existing parameter",
-               checkGetNoParameter(stream.get(),
-                                   {"Non existing key"} /* keys */,
+TEST_IO_STREAM(getNonExistingParameter, "Retrieve the values of an non existing parameter",
+               checkGetNoParameter(stream.get(), {"Non existing key"} /* keys */,
                                    {Result::NOT_SUPPORTED}))
 
-TEST_IO_STREAM(setEmptySetParameter,
-               "Set the values of an empty set of parameters",
+TEST_IO_STREAM(setEmptySetParameter, "Set the values of an empty set of parameters",
                ASSERT_RESULT(Result::OK, stream->setParameters({})))
 
-TEST_IO_STREAM(
-    setNonExistingParameter, "Set the values of an non existing parameter",
-    // Unfortunately, the set_parameter legacy interface did not return any
-    // error code when a key is not supported.
-    // To allow implementation to just wrapped the legacy one, consider OK as a
-    // valid result for setting a non existing parameter.
-    ASSERT_RESULT(invalidArgsOrNotSupportedOrOK,
-                  stream->setParameters({{"non existing key", "0"}})))
+TEST_IO_STREAM(setNonExistingParameter, "Set the values of an non existing parameter",
+               // Unfortunately, the set_parameter legacy interface did not return any
+               // error code when a key is not supported.
+               // To allow implementation to just wrapped the legacy one, consider OK as a
+               // valid result for setting a non existing parameter.
+               ASSERT_RESULT(invalidArgsOrNotSupportedOrOK,
+                             stream->setParameters({{"non existing key", "0"}})))
 
-TEST_IO_STREAM(DebugDump,
-               "Check that a stream can dump its state without error",
-               testDebugDump([this](const auto& handle) {
-                   return stream->debugDump(handle);
-               }))
+TEST_IO_STREAM(DebugDump, "Check that a stream can dump its state without error",
+               testDebugDump([this](const auto& handle) { return stream->debugDump(handle); }))
 
 TEST_IO_STREAM(DebugDumpInvalidArguments,
                "Check that the stream dump doesn't crash on invalid arguments",
@@ -910,10 +848,8 @@
 
 TEST_IO_STREAM(AddNonExistingEffect, "Adding a non existing effect should fail",
                ASSERT_RESULT(Result::INVALID_ARGUMENTS, stream->addEffect(666)))
-TEST_IO_STREAM(RemoveNonExistingEffect,
-               "Removing a non existing effect should fail",
-               ASSERT_RESULT(Result::INVALID_ARGUMENTS,
-                             stream->removeEffect(666)))
+TEST_IO_STREAM(RemoveNonExistingEffect, "Removing a non existing effect should fail",
+               ASSERT_RESULT(Result::INVALID_ARGUMENTS, stream->removeEffect(666)))
 
 // TODO: positive tests
 
@@ -924,29 +860,22 @@
 TEST_IO_STREAM(standby, "Make sure the stream can be put in stanby",
                ASSERT_OK(stream->standby()))  // can not fail
 
-static vector<Result> invalidStateOrNotSupported = {Result::INVALID_STATE,
-                                                    Result::NOT_SUPPORTED};
+static constexpr auto invalidStateOrNotSupported = {Result::INVALID_STATE, Result::NOT_SUPPORTED};
 
-TEST_IO_STREAM(startNoMmap,
-               "Starting a mmaped stream before mapping it should fail",
+TEST_IO_STREAM(startNoMmap, "Starting a mmaped stream before mapping it should fail",
                ASSERT_RESULT(invalidStateOrNotSupported, stream->start()))
 
-TEST_IO_STREAM(stopNoMmap,
-               "Stopping a mmaped stream before mapping it should fail",
+TEST_IO_STREAM(stopNoMmap, "Stopping a mmaped stream before mapping it should fail",
                ASSERT_RESULT(invalidStateOrNotSupported, stream->stop()))
 
-TEST_IO_STREAM(getMmapPositionNoMmap,
-               "Get a stream Mmap position before mapping it should fail",
+TEST_IO_STREAM(getMmapPositionNoMmap, "Get a stream Mmap position before mapping it should fail",
                ASSERT_RESULT(invalidStateOrNotSupported, stream->stop()))
 
-TEST_IO_STREAM(close, "Make sure a stream can be closed",
-               ASSERT_OK(closeStream()))
-TEST_IO_STREAM(closeTwice, "Make sure a stream can not be closed twice",
-               ASSERT_OK(closeStream());
+TEST_IO_STREAM(close, "Make sure a stream can be closed", ASSERT_OK(closeStream()))
+TEST_IO_STREAM(closeTwice, "Make sure a stream can not be closed twice", ASSERT_OK(closeStream());
                ASSERT_RESULT(Result::INVALID_STATE, closeStream()))
 
-static auto invalidArgsOrNotSupported = {Result::INVALID_ARGUMENTS,
-                                         Result::NOT_SUPPORTED};
+static auto invalidArgsOrNotSupported = {Result::INVALID_ARGUMENTS, Result::NOT_SUPPORTED};
 static void testCreateTooBigMmapBuffer(IStream* stream) {
     MmapBufferInfo info;
     Result res;
@@ -968,18 +897,16 @@
     ASSERT_RESULT(invalidArgsOrNotSupported, res);
 }
 
-TEST_IO_STREAM(
-    GetMmapPositionOfNonMmapedStream,
-    "Retrieving the mmap position of a non mmaped stream should fail",
-    testGetMmapPositionOfNonMmapedStream(stream.get()))
+TEST_IO_STREAM(GetMmapPositionOfNonMmapedStream,
+               "Retrieving the mmap position of a non mmaped stream should fail",
+               testGetMmapPositionOfNonMmapedStream(stream.get()))
 
 //////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////// StreamIn ///////////////////////////////////
 //////////////////////////////////////////////////////////////////////////////
 
 TEST_P(InputStreamTest, GetAudioSource) {
-    doc::test(
-        "Retrieving the audio source of an input stream should always succeed");
+    doc::test("Retrieving the audio source of an input stream should always succeed");
     AudioSource source;
     ASSERT_OK(stream->getAudioSource(returnIn(res, source)));
     if (res == Result::NOT_SUPPORTED) {
@@ -991,11 +918,9 @@
 }
 
 static void testUnitaryGain(std::function<Return<Result>(float)> setGain) {
-    for (float value :
-         (float[]){-INFINITY, -1.0, 1.0 + std::numeric_limits<float>::epsilon(),
-                   2.0, INFINITY, NAN}) {
-        EXPECT_RESULT(Result::INVALID_ARGUMENTS, setGain(value)) << "value="
-                                                                 << value;
+    for (float value : (float[]){-INFINITY, -1.0, 1.0 + std::numeric_limits<float>::epsilon(), 2.0,
+                                 INFINITY, NAN}) {
+        EXPECT_RESULT(Result::INVALID_ARGUMENTS, setGain(value)) << "value=" << value;
     }
     // Do not consider -0.0 as an invalid value as it is == with 0.0
     for (float value : {-0.0, 0.0, 0.01, 0.5, 0.09, 1.0 /* Restore volume*/}) {
@@ -1003,8 +928,8 @@
     }
 }
 
-static void testOptionalUnitaryGain(
-    std::function<Return<Result>(float)> setGain, string debugName) {
+static void testOptionalUnitaryGain(std::function<Return<Result>(float)> setGain,
+                                    string debugName) {
     auto result = setGain(1);
     ASSERT_IS_OK(result);
     if (result == Result::NOT_SUPPORTED) {
@@ -1016,32 +941,26 @@
 
 TEST_P(InputStreamTest, SetGain) {
     doc::test("The gain of an input stream should only be set between [0,1]");
-    testOptionalUnitaryGain(
-        [this](float volume) { return stream->setGain(volume); },
-        "InputStream::setGain");
+    testOptionalUnitaryGain([this](float volume) { return stream->setGain(volume); },
+                            "InputStream::setGain");
 }
 
-static void testPrepareForReading(IStreamIn* stream, uint32_t frameSize,
-                                  uint32_t framesCount) {
+static void testPrepareForReading(IStreamIn* stream, uint32_t frameSize, uint32_t framesCount) {
     Result res;
     // Ignore output parameters as the call should fail
-    ASSERT_OK(stream->prepareForReading(
-        frameSize, framesCount,
-        [&res](auto r, auto&, auto&, auto&, auto&) { res = r; }));
+    ASSERT_OK(stream->prepareForReading(frameSize, framesCount,
+                                        [&res](auto r, auto&, auto&, auto&, auto&) { res = r; }));
     EXPECT_RESULT(Result::INVALID_ARGUMENTS, res);
 }
 
 TEST_P(InputStreamTest, PrepareForReadingWithZeroBuffer) {
-    doc::test(
-        "Preparing a stream for reading with a 0 sized buffer should fail");
+    doc::test("Preparing a stream for reading with a 0 sized buffer should fail");
     testPrepareForReading(stream.get(), 0, 0);
 }
 
 TEST_P(InputStreamTest, PrepareForReadingWithHugeBuffer) {
-    doc::test(
-        "Preparing a stream for reading with a 2^32 sized buffer should fail");
-    testPrepareForReading(stream.get(), 1,
-                          std::numeric_limits<uint32_t>::max());
+    doc::test("Preparing a stream for reading with a 2^32 sized buffer should fail");
+    testPrepareForReading(stream.get(), 1, std::numeric_limits<uint32_t>::max());
 }
 
 TEST_P(InputStreamTest, PrepareForReadingCheckOverflow) {
@@ -1053,8 +972,7 @@
 }
 
 TEST_P(InputStreamTest, GetInputFramesLost) {
-    doc::test(
-        "The number of frames lost on a never started stream should be 0");
+    doc::test("The number of frames lost on a never started stream should be 0");
     auto ret = stream->getInputFramesLost();
     ASSERT_IS_OK(ret);
     uint32_t framesLost{ret};
@@ -1084,32 +1002,26 @@
 
 TEST_P(OutputStreamTest, setVolume) {
     doc::test("Try to set the output volume");
-    testOptionalUnitaryGain(
-        [this](float volume) { return stream->setVolume(volume, volume); },
-        "setVolume");
+    testOptionalUnitaryGain([this](float volume) { return stream->setVolume(volume, volume); },
+                            "setVolume");
 }
 
-static void testPrepareForWriting(IStreamOut* stream, uint32_t frameSize,
-                                  uint32_t framesCount) {
+static void testPrepareForWriting(IStreamOut* stream, uint32_t frameSize, uint32_t framesCount) {
     Result res;
     // Ignore output parameters as the call should fail
-    ASSERT_OK(stream->prepareForWriting(
-        frameSize, framesCount,
-        [&res](auto r, auto&, auto&, auto&, auto&) { res = r; }));
+    ASSERT_OK(stream->prepareForWriting(frameSize, framesCount,
+                                        [&res](auto r, auto&, auto&, auto&, auto&) { res = r; }));
     EXPECT_RESULT(Result::INVALID_ARGUMENTS, res);
 }
 
 TEST_P(OutputStreamTest, PrepareForWriteWithZeroBuffer) {
-    doc::test(
-        "Preparing a stream for writing with a 0 sized buffer should fail");
+    doc::test("Preparing a stream for writing with a 0 sized buffer should fail");
     testPrepareForWriting(stream.get(), 0, 0);
 }
 
 TEST_P(OutputStreamTest, PrepareForWriteWithHugeBuffer) {
-    doc::test(
-        "Preparing a stream for writing with a 2^32 sized buffer should fail");
-    testPrepareForWriting(stream.get(), 1,
-                          std::numeric_limits<uint32_t>::max());
+    doc::test("Preparing a stream for writing with a 2^32 sized buffer should fail");
+    testPrepareForWriting(stream.get(), 1, std::numeric_limits<uint32_t>::max());
 }
 
 TEST_P(OutputStreamTest, PrepareForWritingCheckOverflow) {
@@ -1135,8 +1047,7 @@
 };
 
 TEST_P(OutputStreamTest, SupportsPauseAndResumeAndDrain) {
-    doc::test(
-        "Implementation must expose pause, resume and drain capabilities");
+    doc::test("Implementation must expose pause, resume and drain capabilities");
     Capability(stream.get());
 }
 
@@ -1290,13 +1201,10 @@
     struct timespec currentTS;
     ASSERT_EQ(0, clock_gettime(CLOCK_MONOTONIC, &currentTS)) << errno;
 
-    auto toMicroSec = [](uint64_t sec, auto nsec) {
-        return sec * 1e+6 + nsec / 1e+3;
-    };
+    auto toMicroSec = [](uint64_t sec, auto nsec) { return sec * 1e+6 + nsec / 1e+3; };
     auto currentTime = toMicroSec(currentTS.tv_sec, currentTS.tv_nsec);
     auto mesureTime = toMicroSec(mesureTS.tvSec, mesureTS.tvNSec);
-    ASSERT_PRED2([](auto c, auto m) { return c - m < 1e+6; }, currentTime,
-                 mesureTime);
+    ASSERT_PRED2([](auto c, auto m) { return c - m < 1e+6; }, currentTime, mesureTime);
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -1313,15 +1221,13 @@
         "Make sure setMode always succeeds if mode is valid "
         "and fails otherwise");
     // Test Invalid values
-    for (AudioMode mode :
-         {AudioMode::INVALID, AudioMode::CURRENT, AudioMode::CNT}) {
+    for (AudioMode mode : {AudioMode::INVALID, AudioMode::CURRENT, AudioMode::CNT}) {
         SCOPED_TRACE("mode=" + toString(mode));
         ASSERT_RESULT(Result::INVALID_ARGUMENTS, device->setMode(mode));
     }
     // Test valid values
-    for (AudioMode mode :
-         {AudioMode::IN_CALL, AudioMode::IN_COMMUNICATION, AudioMode::RINGTONE,
-          AudioMode::NORMAL /* Make sure to leave the test in normal mode */}) {
+    for (AudioMode mode : {AudioMode::IN_CALL, AudioMode::IN_COMMUNICATION, AudioMode::RINGTONE,
+                           AudioMode::NORMAL /* Make sure to leave the test in normal mode */}) {
         SCOPED_TRACE("mode=" + toString(mode));
         ASSERT_OK(device->setMode(mode));
     }
@@ -1344,15 +1250,13 @@
 using TtyModeAccessorPrimaryHidlTest = AccessorPrimaryHidlTest<TtyMode>;
 TEST_F(TtyModeAccessorPrimaryHidlTest, setGetTtyMode) {
     doc::test("Query and set the TTY mode state");
-    testOptionalAccessors(
-        "TTY mode", {TtyMode::OFF, TtyMode::HCO, TtyMode::VCO, TtyMode::FULL},
-        &IPrimaryDevice::setTtyMode, &IPrimaryDevice::getTtyMode);
+    testOptionalAccessors("TTY mode", {TtyMode::OFF, TtyMode::HCO, TtyMode::VCO, TtyMode::FULL},
+                          &IPrimaryDevice::setTtyMode, &IPrimaryDevice::getTtyMode);
 }
 
 TEST_F(BoolAccessorPrimaryHidlTest, setGetHac) {
     doc::test("Query and set the HAC state");
-    testOptionalAccessors("HAC", {true, false, true},
-                          &IPrimaryDevice::setHacEnabled,
+    testOptionalAccessors("HAC", {true, false, true}, &IPrimaryDevice::setHacEnabled,
                           &IPrimaryDevice::getHacEnabled);
 }
 
diff --git a/audio/2.0/vts/functional/ValidateAudioConfiguration.cpp b/audio/core/2.0/vts/functional/ValidateAudioConfiguration.cpp
similarity index 99%
rename from audio/2.0/vts/functional/ValidateAudioConfiguration.cpp
rename to audio/core/2.0/vts/functional/ValidateAudioConfiguration.cpp
index 4e280f5..bef0e82 100644
--- a/audio/2.0/vts/functional/ValidateAudioConfiguration.cpp
+++ b/audio/core/2.0/vts/functional/ValidateAudioConfiguration.cpp
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#include <string>
 #include <unistd.h>
+#include <string>
 
 #include "utility/ValidateXml.h"
 
diff --git a/audio/common/2.0/default/OWNERS b/audio/core/all-versions/OWNERS
similarity index 100%
copy from audio/common/2.0/default/OWNERS
copy to audio/core/all-versions/OWNERS
diff --git a/audio/core/all-versions/default/Android.bp b/audio/core/all-versions/default/Android.bp
new file mode 100644
index 0000000..214b8d5
--- /dev/null
+++ b/audio/core/all-versions/default/Android.bp
@@ -0,0 +1,30 @@
+cc_library_headers {
+    name: "android.hardware.audio.core@all-versions-impl",
+    relative_install_path: "hw",
+    proprietary: true,
+    vendor: true,
+
+    defaults: ["hidl_defaults"],
+
+    export_include_dirs: ["include"],
+
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libfmq",
+        "libhardware",
+        "libhidlbase",
+        "libhidltransport",
+        "liblog",
+        "libutils",
+        "android.hardware.audio.common-util",
+    ],
+
+    header_libs: [
+        "libaudioclient_headers",
+        "libaudio_system_headers",
+        "libhardware_headers",
+        "libmedia_headers",
+         "android.hardware.audio.common.util@all-versions",
+    ],
+}
diff --git a/audio/2.0/default/Conversions.h b/audio/core/all-versions/default/include/core/all-versions/default/Conversions.h
similarity index 75%
rename from audio/2.0/default/Conversions.h
rename to audio/core/all-versions/default/include/core/all-versions/default/Conversions.h
index ebda5c5..fa05350 100644
--- a/audio/2.0/default/Conversions.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Conversions.h
@@ -14,28 +14,24 @@
  * limitations under the License.
  */
 
-#ifndef android_hardware_audio_V2_0_Conversions_H_
-#define android_hardware_audio_V2_0_Conversions_H_
+#include <common/all-versions/IncludeGuard.h>
 
 #include <string>
 
-#include <android/hardware/audio/2.0/types.h>
 #include <system/audio.h>
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::DeviceAddress;
 
 std::string deviceAddressToHal(const DeviceAddress& address);
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
-
-#endif  // android_hardware_audio_V2_0_Conversions_H_
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Conversions.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/Conversions.impl.h
new file mode 100644
index 0000000..3f3f936
--- /dev/null
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Conversions.impl.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <stdio.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+std::string deviceAddressToHal(const DeviceAddress& address) {
+    // HAL assumes that the address is NUL-terminated.
+    char halAddress[AUDIO_DEVICE_MAX_ADDRESS_LEN];
+    memset(halAddress, 0, sizeof(halAddress));
+    uint32_t halDevice = static_cast<uint32_t>(address.device);
+    const bool isInput = (halDevice & AUDIO_DEVICE_BIT_IN) != 0;
+    if (isInput) halDevice &= ~AUDIO_DEVICE_BIT_IN;
+    if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != 0) ||
+        (isInput && (halDevice & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) != 0)) {
+        snprintf(halAddress, sizeof(halAddress), "%02X:%02X:%02X:%02X:%02X:%02X",
+                 address.address.mac[0], address.address.mac[1], address.address.mac[2],
+                 address.address.mac[3], address.address.mac[4], address.address.mac[5]);
+    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_IP) != 0) ||
+               (isInput && (halDevice & AUDIO_DEVICE_IN_IP) != 0)) {
+        snprintf(halAddress, sizeof(halAddress), "%d.%d.%d.%d", address.address.ipv4[0],
+                 address.address.ipv4[1], address.address.ipv4[2], address.address.ipv4[3]);
+    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_ALL_USB) != 0) ||
+               (isInput && (halDevice & AUDIO_DEVICE_IN_ALL_USB) != 0)) {
+        snprintf(halAddress, sizeof(halAddress), "card=%d;device=%d", address.address.alsa.card,
+                 address.address.alsa.device);
+    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_BUS) != 0) ||
+               (isInput && (halDevice & AUDIO_DEVICE_IN_BUS) != 0)) {
+        snprintf(halAddress, sizeof(halAddress), "%s", address.busAddress.c_str());
+    } else if ((!isInput && (halDevice & AUDIO_DEVICE_OUT_REMOTE_SUBMIX)) != 0 ||
+               (isInput && (halDevice & AUDIO_DEVICE_IN_REMOTE_SUBMIX) != 0)) {
+        snprintf(halAddress, sizeof(halAddress), "%s", address.rSubmixAddress.c_str());
+    }
+    return halAddress;
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Device.h b/audio/core/all-versions/default/include/core/all-versions/default/Device.h
new file mode 100644
index 0000000..224823c
--- /dev/null
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Device.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <memory>
+
+#include <hardware/audio.h>
+#include <media/AudioParameter.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioConfig;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioHwSync;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioInputFlag;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioOutputFlag;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPatchHandle;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPort;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPortConfig;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::DeviceAddress;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IDevice;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamIn;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamOut;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::ParameterValue;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Device : public IDevice, public ParametersUtil {
+    explicit Device(audio_hw_device_t* device);
+
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IDevice follow.
+    Return<Result> initCheck() override;
+    Return<Result> setMasterVolume(float volume) override;
+    Return<void> getMasterVolume(getMasterVolume_cb _hidl_cb) override;
+    Return<Result> setMicMute(bool mute) override;
+    Return<void> getMicMute(getMicMute_cb _hidl_cb) override;
+    Return<Result> setMasterMute(bool mute) override;
+    Return<void> getMasterMute(getMasterMute_cb _hidl_cb) override;
+    Return<void> getInputBufferSize(const AudioConfig& config,
+                                    getInputBufferSize_cb _hidl_cb) override;
+    Return<void> openOutputStream(int32_t ioHandle, const DeviceAddress& device,
+                                  const AudioConfig& config, AudioOutputFlag flags,
+                                  openOutputStream_cb _hidl_cb) override;
+    Return<void> openInputStream(int32_t ioHandle, const DeviceAddress& device,
+                                 const AudioConfig& config, AudioInputFlag flags,
+                                 AudioSource source, openInputStream_cb _hidl_cb) override;
+    Return<bool> supportsAudioPatches() override;
+    Return<void> createAudioPatch(const hidl_vec<AudioPortConfig>& sources,
+                                  const hidl_vec<AudioPortConfig>& sinks,
+                                  createAudioPatch_cb _hidl_cb) override;
+    Return<Result> releaseAudioPatch(int32_t patch) override;
+    Return<void> getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb) override;
+    Return<Result> setAudioPortConfig(const AudioPortConfig& config) override;
+    Return<AudioHwSync> getHwAvSync() override;
+    Return<Result> setScreenState(bool turnedOn) override;
+    Return<void> getParameters(const hidl_vec<hidl_string>& keys,
+                               getParameters_cb _hidl_cb) override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters) override;
+    Return<void> debugDump(const hidl_handle& fd) override;
+
+    // Utility methods for extending interfaces.
+    Result analyzeStatus(const char* funcName, int status);
+    void closeInputStream(audio_stream_in_t* stream);
+    void closeOutputStream(audio_stream_out_t* stream);
+    audio_hw_device_t* device() const { return mDevice; }
+
+   private:
+    audio_hw_device_t* mDevice;
+
+    virtual ~Device();
+
+    // Methods from ParametersUtil.
+    char* halGetParameters(const char* keys) override;
+    int halSetParameters(const char* keysAndValues) override;
+
+    uint32_t version() const { return mDevice->common.version; }
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/Device.cpp b/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
similarity index 64%
rename from audio/2.0/default/Device.cpp
rename to audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
index 3727966..b295082 100644
--- a/audio/2.0/default/Device.cpp
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
@@ -1,49 +1,43 @@
 /*
-* Copyright (C) 2016 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.
-*/
+ * Copyright (C) 2016 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 "DeviceHAL"
+#include <common/all-versions/IncludeGuard.h>
+
 //#define LOG_NDEBUG 0
 
-#include <algorithm>
 #include <memory.h>
 #include <string.h>
+#include <algorithm>
 
 #include <android/log.h>
 
-#include "Conversions.h"
-#include "Device.h"
-#include "HidlUtils.h"
-#include "StreamIn.h"
-#include "StreamOut.h"
-#include "Util.h"
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::HidlUtils;
+using ::android::hardware::audio::all_versions::implementation::isGainNormalized;
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-Device::Device(audio_hw_device_t* device)
-        : mDevice(device) {
-}
+Device::Device(audio_hw_device_t* device) : mDevice(device) {}
 
 Device::~Device() {
     int status = audio_hw_device_close(mDevice);
-    ALOGW_IF(status, "Error closing audio hw device %p: %s", mDevice,
-             strerror(-status));
+    ALOGW_IF(status, "Error closing audio hw device %p: %s", mDevice, strerror(-status));
     mDevice = nullptr;
 }
 
@@ -83,7 +77,7 @@
     return mDevice->set_parameters(mDevice, keysAndValues);
 }
 
-// Methods from ::android::hardware::audio::V2_0::IDevice follow.
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IDevice follow.
 Return<Result> Device::initCheck() {
     return analyzeStatus("init_check", mDevice->init_check(mDevice));
 }
@@ -96,16 +90,14 @@
         ALOGW("Can not set a master volume (%f) outside [0,1]", volume);
         return Result::INVALID_ARGUMENTS;
     }
-    return analyzeStatus("set_master_volume",
-                         mDevice->set_master_volume(mDevice, volume));
+    return analyzeStatus("set_master_volume", mDevice->set_master_volume(mDevice, volume));
 }
 
 Return<void> Device::getMasterVolume(getMasterVolume_cb _hidl_cb) {
     Result retval(Result::NOT_SUPPORTED);
     float volume = 0;
     if (mDevice->get_master_volume != NULL) {
-        retval = analyzeStatus("get_master_volume",
-                               mDevice->get_master_volume(mDevice, &volume));
+        retval = analyzeStatus("get_master_volume", mDevice->get_master_volume(mDevice, &volume));
     }
     _hidl_cb(retval, volume);
     return Void();
@@ -117,8 +109,7 @@
 
 Return<void> Device::getMicMute(getMicMute_cb _hidl_cb) {
     bool mute = false;
-    Result retval =
-        analyzeStatus("get_mic_mute", mDevice->get_mic_mute(mDevice, &mute));
+    Result retval = analyzeStatus("get_mic_mute", mDevice->get_mic_mute(mDevice, &mute));
     _hidl_cb(retval, mute);
     return Void();
 }
@@ -126,8 +117,7 @@
 Return<Result> Device::setMasterMute(bool mute) {
     Result retval(Result::NOT_SUPPORTED);
     if (mDevice->set_master_mute != NULL) {
-        retval = analyzeStatus("set_master_mute",
-                               mDevice->set_master_mute(mDevice, mute));
+        retval = analyzeStatus("set_master_mute", mDevice->set_master_mute(mDevice, mute));
     }
     return retval;
 }
@@ -136,15 +126,13 @@
     Result retval(Result::NOT_SUPPORTED);
     bool mute = false;
     if (mDevice->get_master_mute != NULL) {
-        retval = analyzeStatus("get_master_mute",
-                               mDevice->get_master_mute(mDevice, &mute));
+        retval = analyzeStatus("get_master_mute", mDevice->get_master_mute(mDevice, &mute));
     }
     _hidl_cb(retval, mute);
     return Void();
 }
 
-Return<void> Device::getInputBufferSize(const AudioConfig& config,
-                                        getInputBufferSize_cb _hidl_cb) {
+Return<void> Device::getInputBufferSize(const AudioConfig& config, getInputBufferSize_cb _hidl_cb) {
     audio_config_t halConfig;
     HidlUtils::audioConfigToHal(config, &halConfig);
     size_t halBufferSize = mDevice->get_input_buffer_size(mDevice, &halConfig);
@@ -158,10 +146,8 @@
     return Void();
 }
 
-Return<void> Device::openOutputStream(int32_t ioHandle,
-                                      const DeviceAddress& device,
-                                      const AudioConfig& config,
-                                      AudioOutputFlag flags,
+Return<void> Device::openOutputStream(int32_t ioHandle, const DeviceAddress& device,
+                                      const AudioConfig& config, AudioOutputFlag flags,
                                       openOutputStream_cb _hidl_cb) {
     audio_config_t halConfig;
     HidlUtils::audioConfigToHal(config, &halConfig);
@@ -170,13 +156,12 @@
         "open_output_stream handle: %d devices: %x flags: %#x "
         "srate: %d format %#x channels %x address %s",
         ioHandle, static_cast<audio_devices_t>(device.device),
-        static_cast<audio_output_flags_t>(flags), halConfig.sample_rate,
-        halConfig.format, halConfig.channel_mask,
-        deviceAddressToHal(device).c_str());
-    int status = mDevice->open_output_stream(
-        mDevice, ioHandle, static_cast<audio_devices_t>(device.device),
-        static_cast<audio_output_flags_t>(flags), &halConfig, &halStream,
-        deviceAddressToHal(device).c_str());
+        static_cast<audio_output_flags_t>(flags), halConfig.sample_rate, halConfig.format,
+        halConfig.channel_mask, deviceAddressToHal(device).c_str());
+    int status =
+        mDevice->open_output_stream(mDevice, ioHandle, static_cast<audio_devices_t>(device.device),
+                                    static_cast<audio_output_flags_t>(flags), &halConfig,
+                                    &halStream, deviceAddressToHal(device).c_str());
     ALOGV("open_output_stream status %d stream %p", status, halStream);
     sp<IStreamOut> streamOut;
     if (status == OK) {
@@ -184,16 +169,13 @@
     }
     AudioConfig suggestedConfig;
     HidlUtils::audioConfigFromHal(halConfig, &suggestedConfig);
-    _hidl_cb(analyzeStatus("open_output_stream", status), streamOut,
-             suggestedConfig);
+    _hidl_cb(analyzeStatus("open_output_stream", status), streamOut, suggestedConfig);
     return Void();
 }
 
-Return<void> Device::openInputStream(int32_t ioHandle,
-                                     const DeviceAddress& device,
-                                     const AudioConfig& config,
-                                     AudioInputFlag flags, AudioSource source,
-                                     openInputStream_cb _hidl_cb) {
+Return<void> Device::openInputStream(int32_t ioHandle, const DeviceAddress& device,
+                                     const AudioConfig& config, AudioInputFlag flags,
+                                     AudioSource source, openInputStream_cb _hidl_cb) {
     audio_config_t halConfig;
     HidlUtils::audioConfigToHal(config, &halConfig);
     audio_stream_in_t* halStream;
@@ -201,14 +183,12 @@
         "open_input_stream handle: %d devices: %x flags: %#x "
         "srate: %d format %#x channels %x address %s source %d",
         ioHandle, static_cast<audio_devices_t>(device.device),
-        static_cast<audio_input_flags_t>(flags), halConfig.sample_rate,
-        halConfig.format, halConfig.channel_mask,
-        deviceAddressToHal(device).c_str(),
+        static_cast<audio_input_flags_t>(flags), halConfig.sample_rate, halConfig.format,
+        halConfig.channel_mask, deviceAddressToHal(device).c_str(),
         static_cast<audio_source_t>(source));
     int status = mDevice->open_input_stream(
-        mDevice, ioHandle, static_cast<audio_devices_t>(device.device),
-        &halConfig, &halStream, static_cast<audio_input_flags_t>(flags),
-        deviceAddressToHal(device).c_str(),
+        mDevice, ioHandle, static_cast<audio_devices_t>(device.device), &halConfig, &halStream,
+        static_cast<audio_input_flags_t>(flags), deviceAddressToHal(device).c_str(),
         static_cast<audio_source_t>(source));
     ALOGV("open_input_stream status %d stream %p", status, halStream);
     sp<IStreamIn> streamIn;
@@ -217,8 +197,7 @@
     }
     AudioConfig suggestedConfig;
     HidlUtils::audioConfigFromHal(halConfig, &suggestedConfig);
-    _hidl_cb(analyzeStatus("open_input_stream", status), streamIn,
-             suggestedConfig);
+    _hidl_cb(analyzeStatus("open_input_stream", status), streamIn, suggestedConfig);
     return Void();
 }
 
@@ -232,15 +211,12 @@
     Result retval(Result::NOT_SUPPORTED);
     AudioPatchHandle patch = 0;
     if (version() >= AUDIO_DEVICE_API_VERSION_3_0) {
-        std::unique_ptr<audio_port_config[]> halSources(
-            HidlUtils::audioPortConfigsToHal(sources));
-        std::unique_ptr<audio_port_config[]> halSinks(
-            HidlUtils::audioPortConfigsToHal(sinks));
+        std::unique_ptr<audio_port_config[]> halSources(HidlUtils::audioPortConfigsToHal(sources));
+        std::unique_ptr<audio_port_config[]> halSinks(HidlUtils::audioPortConfigsToHal(sinks));
         audio_patch_handle_t halPatch = AUDIO_PATCH_HANDLE_NONE;
-        retval = analyzeStatus(
-            "create_audio_patch",
-            mDevice->create_audio_patch(mDevice, sources.size(), &halSources[0],
-                                        sinks.size(), &halSinks[0], &halPatch));
+        retval = analyzeStatus("create_audio_patch",
+                               mDevice->create_audio_patch(mDevice, sources.size(), &halSources[0],
+                                                           sinks.size(), &halSinks[0], &halPatch));
         if (retval == Result::OK) {
             patch = static_cast<AudioPatchHandle>(halPatch);
         }
@@ -253,18 +229,15 @@
     if (version() >= AUDIO_DEVICE_API_VERSION_3_0) {
         return analyzeStatus(
             "release_audio_patch",
-            mDevice->release_audio_patch(
-                mDevice, static_cast<audio_patch_handle_t>(patch)));
+            mDevice->release_audio_patch(mDevice, static_cast<audio_patch_handle_t>(patch)));
     }
     return Result::NOT_SUPPORTED;
 }
 
-Return<void> Device::getAudioPort(const AudioPort& port,
-                                  getAudioPort_cb _hidl_cb) {
+Return<void> Device::getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb) {
     audio_port halPort;
     HidlUtils::audioPortToHal(port, &halPort);
-    Result retval = analyzeStatus("get_audio_port",
-                                  mDevice->get_audio_port(mDevice, &halPort));
+    Result retval = analyzeStatus("get_audio_port", mDevice->get_audio_port(mDevice, &halPort));
     AudioPort resultPort = port;
     if (retval == Result::OK) {
         HidlUtils::audioPortFromHal(halPort, &resultPort);
@@ -277,9 +250,8 @@
     if (version() >= AUDIO_DEVICE_API_VERSION_3_0) {
         struct audio_port_config halPortConfig;
         HidlUtils::audioPortConfigToHal(config, &halPortConfig);
-        return analyzeStatus(
-            "set_audio_port_config",
-            mDevice->set_audio_port_config(mDevice, &halPortConfig));
+        return analyzeStatus("set_audio_port_config",
+                             mDevice->set_audio_port_config(mDevice, &halPortConfig));
     }
     return Result::NOT_SUPPORTED;
 }
@@ -294,14 +266,12 @@
     return setParam(AudioParameter::keyScreenState, turnedOn);
 }
 
-Return<void> Device::getParameters(const hidl_vec<hidl_string>& keys,
-                                   getParameters_cb _hidl_cb) {
+Return<void> Device::getParameters(const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb) {
     getParametersImpl(keys, _hidl_cb);
     return Void();
 }
 
-Return<Result> Device::setParameters(
-    const hidl_vec<ParameterValue>& parameters) {
+Return<Result> Device::setParameters(const hidl_vec<ParameterValue>& parameters) {
     return setParametersImpl(parameters);
 }
 
@@ -313,7 +283,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
diff --git a/audio/2.0/default/DevicesFactory.h b/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.h
similarity index 68%
rename from audio/2.0/default/DevicesFactory.h
rename to audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.h
index b046f9f..769adaa 100644
--- a/audio/2.0/default/DevicesFactory.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.h
@@ -14,24 +14,22 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_AUDIO_V2_0_DEVICESFACTORY_H
-#define ANDROID_HARDWARE_AUDIO_V2_0_DEVICESFACTORY_H
+#include <common/all-versions/IncludeGuard.h>
 
 #include <hardware/audio.h>
 
-#include <android/hardware/audio/2.0/IDevicesFactory.h>
 #include <hidl/Status.h>
 
 #include <hidl/MQDescriptor.h>
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-using ::android::hardware::audio::V2_0::IDevice;
-using ::android::hardware::audio::V2_0::IDevicesFactory;
-using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IDevice;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IDevicesFactory;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
 using ::android::hardware::hidl_vec;
@@ -39,21 +37,18 @@
 using ::android::sp;
 
 struct DevicesFactory : public IDevicesFactory {
-    // Methods from ::android::hardware::audio::V2_0::IDevicesFactory follow.
-    Return<void> openDevice(IDevicesFactory::Device device, openDevice_cb _hidl_cb)  override;
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IDevicesFactory follow.
+    Return<void> openDevice(IDevicesFactory::Device device, openDevice_cb _hidl_cb) override;
 
-  private:
+   private:
     static const char* deviceToString(IDevicesFactory::Device device);
-    static int loadAudioInterface(const char *if_name, audio_hw_device_t **dev);
-
+    static int loadAudioInterface(const char* if_name, audio_hw_device_t** dev);
 };
 
 extern "C" IDevicesFactory* HIDL_FETCH_IDevicesFactory(const char* name);
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_V2_0_DEVICESFACTORY_H
diff --git a/audio/2.0/default/DevicesFactory.cpp b/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.impl.h
similarity index 67%
rename from audio/2.0/default/DevicesFactory.cpp
rename to audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.impl.h
index b913bc7..014b4d8 100644
--- a/audio/2.0/default/DevicesFactory.cpp
+++ b/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.impl.h
@@ -14,50 +14,50 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "DevicesFactoryHAL"
+#include <common/all-versions/IncludeGuard.h>
 
 #include <string.h>
 
 #include <android/log.h>
 
-#include "Device.h"
-#include "DevicesFactory.h"
-#include "PrimaryDevice.h"
-
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
 // static
 const char* DevicesFactory::deviceToString(IDevicesFactory::Device device) {
     switch (device) {
-        case IDevicesFactory::Device::PRIMARY: return AUDIO_HARDWARE_MODULE_ID_PRIMARY;
-        case IDevicesFactory::Device::A2DP: return AUDIO_HARDWARE_MODULE_ID_A2DP;
-        case IDevicesFactory::Device::USB: return AUDIO_HARDWARE_MODULE_ID_USB;
-        case IDevicesFactory::Device::R_SUBMIX: return AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX;
-        case IDevicesFactory::Device::STUB: return AUDIO_HARDWARE_MODULE_ID_STUB;
+        case IDevicesFactory::Device::PRIMARY:
+            return AUDIO_HARDWARE_MODULE_ID_PRIMARY;
+        case IDevicesFactory::Device::A2DP:
+            return AUDIO_HARDWARE_MODULE_ID_A2DP;
+        case IDevicesFactory::Device::USB:
+            return AUDIO_HARDWARE_MODULE_ID_USB;
+        case IDevicesFactory::Device::R_SUBMIX:
+            return AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX;
+        case IDevicesFactory::Device::STUB:
+            return AUDIO_HARDWARE_MODULE_ID_STUB;
     }
     return nullptr;
 }
 
 // static
-int DevicesFactory::loadAudioInterface(const char *if_name, audio_hw_device_t **dev)
-{
-    const hw_module_t *mod;
+int DevicesFactory::loadAudioInterface(const char* if_name, audio_hw_device_t** dev) {
+    const hw_module_t* mod;
     int rc;
 
     rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, &mod);
     if (rc) {
-        ALOGE("%s couldn't load audio hw module %s.%s (%s)", __func__,
-                AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
+        ALOGE("%s couldn't load audio hw module %s.%s (%s)", __func__, AUDIO_HARDWARE_MODULE_ID,
+              if_name, strerror(-rc));
         goto out;
     }
     rc = audio_hw_device_open(mod, dev);
     if (rc) {
-        ALOGE("%s couldn't open audio hw device in %s.%s (%s)", __func__,
-                AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
+        ALOGE("%s couldn't open audio hw device in %s.%s (%s)", __func__, AUDIO_HARDWARE_MODULE_ID,
+              if_name, strerror(-rc));
         goto out;
     }
     if ((*dev)->common.version < AUDIO_DEVICE_API_VERSION_MIN) {
@@ -73,9 +73,9 @@
     return rc;
 }
 
-// Methods from ::android::hardware::audio::V2_0::IDevicesFactory follow.
-Return<void> DevicesFactory::openDevice(IDevicesFactory::Device device, openDevice_cb _hidl_cb)  {
-    audio_hw_device_t *halDevice;
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IDevicesFactory follow.
+Return<void> DevicesFactory::openDevice(IDevicesFactory::Device device, openDevice_cb _hidl_cb) {
+    audio_hw_device_t* halDevice;
     Result retval(Result::INVALID_ARGUMENTS);
     sp<IDevice> result;
     const char* moduleName = deviceToString(device);
@@ -85,8 +85,8 @@
             if (device == IDevicesFactory::Device::PRIMARY) {
                 result = new PrimaryDevice(halDevice);
             } else {
-                result = new ::android::hardware::audio::V2_0::implementation::
-                    Device(halDevice);
+                result = new ::android::hardware::audio::AUDIO_HAL_VERSION::implementation::Device(
+                    halDevice);
             }
             retval = Result::OK;
         } else if (halStatus == -EINVAL) {
@@ -102,7 +102,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
diff --git a/audio/2.0/default/ParametersUtil.h b/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.h
similarity index 76%
rename from audio/2.0/default/ParametersUtil.h
rename to audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.h
index 49036dc..df5adee 100644
--- a/audio/2.0/default/ParametersUtil.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.h
@@ -14,35 +14,33 @@
  * limitations under the License.
  */
 
-#ifndef android_hardware_audio_V2_0_ParametersUtil_H_
-#define android_hardware_audio_V2_0_ParametersUtil_H_
+#include <common/all-versions/IncludeGuard.h>
 
 #include <functional>
 #include <memory>
 
-#include <android/hardware/audio/2.0/types.h>
 #include <hidl/HidlSupport.h>
 #include <media/AudioParameter.h>
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-using ::android::hardware::audio::V2_0::ParameterValue;
-using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::ParameterValue;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
 using ::android::hardware::hidl_string;
 using ::android::hardware::hidl_vec;
 
 class ParametersUtil {
-  public:
+   public:
     Result getParam(const char* name, bool* value);
     Result getParam(const char* name, int* value);
     Result getParam(const char* name, String8* value);
     void getParametersImpl(
-            const hidl_vec<hidl_string>& keys,
-            std::function<void(Result retval, const hidl_vec<ParameterValue>& parameters)> cb);
+        const hidl_vec<hidl_string>& keys,
+        std::function<void(Result retval, const hidl_vec<ParameterValue>& parameters)> cb);
     std::unique_ptr<AudioParameter> getParams(const AudioParameter& keys);
     Result setParam(const char* name, bool value);
     Result setParam(const char* name, int value);
@@ -50,7 +48,7 @@
     Result setParametersImpl(const hidl_vec<ParameterValue>& parameters);
     Result setParams(const AudioParameter& param);
 
-  protected:
+   protected:
     virtual ~ParametersUtil() {}
 
     virtual char* halGetParameters(const char* keys) = 0;
@@ -58,9 +56,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
-
-#endif  // android_hardware_audio_V2_0_ParametersUtil_H_
diff --git a/audio/2.0/default/ParametersUtil.cpp b/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.impl.h
similarity index 81%
rename from audio/2.0/default/ParametersUtil.cpp
rename to audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.impl.h
index c113ac7..a858a48 100644
--- a/audio/2.0/default/ParametersUtil.cpp
+++ b/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.impl.h
@@ -14,12 +14,12 @@
  * limitations under the License.
  */
 
-#include "ParametersUtil.h"
+#include <common/all-versions/IncludeGuard.h>
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
 /** Converts a status_t in Result according to the rules of AudioParameter::get*
@@ -72,17 +72,14 @@
 
 void ParametersUtil::getParametersImpl(
     const hidl_vec<hidl_string>& keys,
-    std::function<void(Result retval,
-                       const hidl_vec<ParameterValue>& parameters)>
-        cb) {
+    std::function<void(Result retval, const hidl_vec<ParameterValue>& parameters)> cb) {
     AudioParameter halKeys;
     for (size_t i = 0; i < keys.size(); ++i) {
         halKeys.addKey(String8(keys[i].c_str()));
     }
     std::unique_ptr<AudioParameter> halValues = getParams(halKeys);
-    Result retval = (keys.size() == 0 || halValues->size() != 0)
-                        ? Result::OK
-                        : Result::NOT_SUPPORTED;
+    Result retval =
+        (keys.size() == 0 || halValues->size() != 0) ? Result::OK : Result::NOT_SUPPORTED;
     hidl_vec<ParameterValue> result;
     result.resize(halValues->size());
     String8 halKey, halValue;
@@ -99,8 +96,7 @@
     cb(retval, result);
 }
 
-std::unique_ptr<AudioParameter> ParametersUtil::getParams(
-    const AudioParameter& keys) {
+std::unique_ptr<AudioParameter> ParametersUtil::getParams(const AudioParameter& keys) {
     String8 paramsAndValues;
     char* halValues = halGetParameters(keys.keysToString().string());
     if (halValues != NULL) {
@@ -114,8 +110,7 @@
 
 Result ParametersUtil::setParam(const char* name, bool value) {
     AudioParameter param;
-    param.add(String8(name), String8(value ? AudioParameter::valueOn
-                                           : AudioParameter::valueOff));
+    param.add(String8(name), String8(value ? AudioParameter::valueOn : AudioParameter::valueOff));
     return setParams(param);
 }
 
@@ -131,12 +126,10 @@
     return setParams(param);
 }
 
-Result ParametersUtil::setParametersImpl(
-    const hidl_vec<ParameterValue>& parameters) {
+Result ParametersUtil::setParametersImpl(const hidl_vec<ParameterValue>& parameters) {
     AudioParameter params;
     for (size_t i = 0; i < parameters.size(); ++i) {
-        params.add(String8(parameters[i].key.c_str()),
-                   String8(parameters[i].value.c_str()));
+        params.add(String8(parameters[i].key.c_str()), String8(parameters[i].value.c_str()));
     }
     return setParams(params);
 }
@@ -144,23 +137,29 @@
 Result ParametersUtil::setParams(const AudioParameter& param) {
     int halStatus = halSetParameters(param.toString().string());
     switch (halStatus) {
-        case OK: return Result::OK;
-        case -EINVAL: return Result::INVALID_ARGUMENTS;
-        case -ENODATA: return Result::INVALID_STATE;
-        case -ENODEV: return Result::NOT_INITIALIZED;
+        case OK:
+            return Result::OK;
+        case -EINVAL:
+            return Result::INVALID_ARGUMENTS;
+        case -ENODATA:
+            return Result::INVALID_STATE;
+        case -ENODEV:
+            return Result::NOT_INITIALIZED;
         // The rest of the API (*::analyseStatus) returns NOT_SUPPORTED
         // when the legacy API returns -ENOSYS
         // However the legacy API explicitly state that for get_paramers,
         // -ENOSYS should be returned if
         // "the implementation does not accept a parameter change while the
         //  output is active but the parameter is acceptable otherwise"
-        case -ENOSYS: return Result::INVALID_STATE;
-        default: return Result::INVALID_ARGUMENTS;
+        case -ENOSYS:
+            return Result::INVALID_STATE;
+        default:
+            return Result::INVALID_ARGUMENTS;
     }
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.h b/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.h
new file mode 100644
index 0000000..240b221
--- /dev/null
+++ b/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioConfig;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioInputFlag;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioOutputFlag;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPort;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioPortConfig;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::DeviceAddress;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IDevice;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IPrimaryDevice;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamIn;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamOut;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::ParameterValue;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct PrimaryDevice : public IPrimaryDevice {
+    explicit PrimaryDevice(audio_hw_device_t* device);
+
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IDevice follow.
+    Return<Result> initCheck() override;
+    Return<Result> setMasterVolume(float volume) override;
+    Return<void> getMasterVolume(getMasterVolume_cb _hidl_cb) override;
+    Return<Result> setMicMute(bool mute) override;
+    Return<void> getMicMute(getMicMute_cb _hidl_cb) override;
+    Return<Result> setMasterMute(bool mute) override;
+    Return<void> getMasterMute(getMasterMute_cb _hidl_cb) override;
+    Return<void> getInputBufferSize(const AudioConfig& config,
+                                    getInputBufferSize_cb _hidl_cb) override;
+    Return<void> openOutputStream(int32_t ioHandle, const DeviceAddress& device,
+                                  const AudioConfig& config, AudioOutputFlag flags,
+                                  openOutputStream_cb _hidl_cb) override;
+    Return<void> openInputStream(int32_t ioHandle, const DeviceAddress& device,
+                                 const AudioConfig& config, AudioInputFlag flags,
+                                 AudioSource source, openInputStream_cb _hidl_cb) override;
+    Return<bool> supportsAudioPatches() override;
+    Return<void> createAudioPatch(const hidl_vec<AudioPortConfig>& sources,
+                                  const hidl_vec<AudioPortConfig>& sinks,
+                                  createAudioPatch_cb _hidl_cb) override;
+    Return<Result> releaseAudioPatch(int32_t patch) override;
+    Return<void> getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb) override;
+    Return<Result> setAudioPortConfig(const AudioPortConfig& config) override;
+    Return<AudioHwSync> getHwAvSync() override;
+    Return<Result> setScreenState(bool turnedOn) override;
+    Return<void> getParameters(const hidl_vec<hidl_string>& keys,
+                               getParameters_cb _hidl_cb) override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters) override;
+    Return<void> debugDump(const hidl_handle& fd) override;
+
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IPrimaryDevice follow.
+    Return<Result> setVoiceVolume(float volume) override;
+    Return<Result> setMode(AudioMode mode) override;
+    Return<void> getBtScoNrecEnabled(getBtScoNrecEnabled_cb _hidl_cb) override;
+    Return<Result> setBtScoNrecEnabled(bool enabled) override;
+    Return<void> getBtScoWidebandEnabled(getBtScoWidebandEnabled_cb _hidl_cb) override;
+    Return<Result> setBtScoWidebandEnabled(bool enabled) override;
+    Return<void> getTtyMode(getTtyMode_cb _hidl_cb) override;
+    Return<Result> setTtyMode(IPrimaryDevice::TtyMode mode) override;
+    Return<void> getHacEnabled(getHacEnabled_cb _hidl_cb) override;
+    Return<Result> setHacEnabled(bool enabled) override;
+
+   private:
+    sp<Device> mDevice;
+
+    virtual ~PrimaryDevice();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/PrimaryDevice.cpp b/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.impl.h
similarity index 71%
rename from audio/2.0/default/PrimaryDevice.cpp
rename to audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.impl.h
index a4a8206..3ce047a 100644
--- a/audio/2.0/default/PrimaryDevice.cpp
+++ b/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.impl.h
@@ -14,24 +14,19 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "PrimaryDeviceHAL"
-
-#include "PrimaryDevice.h"
-#include "Util.h"
+#include <common/all-versions/IncludeGuard.h>
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-PrimaryDevice::PrimaryDevice(audio_hw_device_t* device)
-        : mDevice(new Device(device)) {
-}
+PrimaryDevice::PrimaryDevice(audio_hw_device_t* device) : mDevice(new Device(device)) {}
 
 PrimaryDevice::~PrimaryDevice() {}
 
-// Methods from ::android::hardware::audio::V2_0::IDevice follow.
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IDevice follow.
 Return<Result> PrimaryDevice::initCheck() {
     return mDevice->initCheck();
 }
@@ -65,28 +60,25 @@
     return mDevice->getInputBufferSize(config, _hidl_cb);
 }
 
-Return<void> PrimaryDevice::openOutputStream(int32_t ioHandle,
-                                             const DeviceAddress& device,
-                                             const AudioConfig& config,
-                                             AudioOutputFlag flags,
+Return<void> PrimaryDevice::openOutputStream(int32_t ioHandle, const DeviceAddress& device,
+                                             const AudioConfig& config, AudioOutputFlag flags,
                                              openOutputStream_cb _hidl_cb) {
     return mDevice->openOutputStream(ioHandle, device, config, flags, _hidl_cb);
 }
 
-Return<void> PrimaryDevice::openInputStream(
-    int32_t ioHandle, const DeviceAddress& device, const AudioConfig& config,
-    AudioInputFlag flags, AudioSource source, openInputStream_cb _hidl_cb) {
-    return mDevice->openInputStream(ioHandle, device, config, flags, source,
-                                    _hidl_cb);
+Return<void> PrimaryDevice::openInputStream(int32_t ioHandle, const DeviceAddress& device,
+                                            const AudioConfig& config, AudioInputFlag flags,
+                                            AudioSource source, openInputStream_cb _hidl_cb) {
+    return mDevice->openInputStream(ioHandle, device, config, flags, source, _hidl_cb);
 }
 
 Return<bool> PrimaryDevice::supportsAudioPatches() {
     return mDevice->supportsAudioPatches();
 }
 
-Return<void> PrimaryDevice::createAudioPatch(
-    const hidl_vec<AudioPortConfig>& sources,
-    const hidl_vec<AudioPortConfig>& sinks, createAudioPatch_cb _hidl_cb) {
+Return<void> PrimaryDevice::createAudioPatch(const hidl_vec<AudioPortConfig>& sources,
+                                             const hidl_vec<AudioPortConfig>& sinks,
+                                             createAudioPatch_cb _hidl_cb) {
     return mDevice->createAudioPatch(sources, sinks, _hidl_cb);
 }
 
@@ -94,13 +86,11 @@
     return mDevice->releaseAudioPatch(patch);
 }
 
-Return<void> PrimaryDevice::getAudioPort(const AudioPort& port,
-                                         getAudioPort_cb _hidl_cb) {
+Return<void> PrimaryDevice::getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb) {
     return mDevice->getAudioPort(port, _hidl_cb);
 }
 
-Return<Result> PrimaryDevice::setAudioPortConfig(
-    const AudioPortConfig& config) {
+Return<Result> PrimaryDevice::setAudioPortConfig(const AudioPortConfig& config) {
     return mDevice->setAudioPortConfig(config);
 }
 
@@ -117,8 +107,7 @@
     return mDevice->getParameters(keys, _hidl_cb);
 }
 
-Return<Result> PrimaryDevice::setParameters(
-    const hidl_vec<ParameterValue>& parameters) {
+Return<Result> PrimaryDevice::setParameters(const hidl_vec<ParameterValue>& parameters) {
     return mDevice->setParameters(parameters);
 }
 
@@ -126,15 +115,14 @@
     return mDevice->debugDump(fd);
 }
 
-// Methods from ::android::hardware::audio::V2_0::IPrimaryDevice follow.
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IPrimaryDevice follow.
 Return<Result> PrimaryDevice::setVoiceVolume(float volume) {
-    if (!isGainNormalized(volume)) {
+    if (!all_versions::implementation::isGainNormalized(volume)) {
         ALOGW("Can not set a voice volume (%f) outside [0,1]", volume);
         return Result::INVALID_ARGUMENTS;
     }
-    return mDevice->analyzeStatus(
-        "set_voice_volume",
-        mDevice->device()->set_voice_volume(mDevice->device(), volume));
+    return mDevice->analyzeStatus("set_voice_volume",
+                                  mDevice->device()->set_voice_volume(mDevice->device(), volume));
 }
 
 Return<Result> PrimaryDevice::setMode(AudioMode mode) {
@@ -151,12 +139,11 @@
     };
 
     return mDevice->analyzeStatus(
-        "set_mode", mDevice->device()->set_mode(
-                        mDevice->device(), static_cast<audio_mode_t>(mode)));
+        "set_mode",
+        mDevice->device()->set_mode(mDevice->device(), static_cast<audio_mode_t>(mode)));
 }
 
-Return<void> PrimaryDevice::getBtScoNrecEnabled(
-    getBtScoNrecEnabled_cb _hidl_cb) {
+Return<void> PrimaryDevice::getBtScoNrecEnabled(getBtScoNrecEnabled_cb _hidl_cb) {
     bool enabled;
     Result retval = mDevice->getParam(AudioParameter::keyBtNrec, &enabled);
     _hidl_cb(retval, enabled);
@@ -167,8 +154,7 @@
     return mDevice->setParam(AudioParameter::keyBtNrec, enabled);
 }
 
-Return<void> PrimaryDevice::getBtScoWidebandEnabled(
-    getBtScoWidebandEnabled_cb _hidl_cb) {
+Return<void> PrimaryDevice::getBtScoWidebandEnabled(getBtScoWidebandEnabled_cb _hidl_cb) {
     bool enabled;
     Result retval = mDevice->getParam(AUDIO_PARAMETER_KEY_BT_SCO_WB, &enabled);
     _hidl_cb(retval, enabled);
@@ -188,8 +174,7 @@
 }
 
 Return<Result> PrimaryDevice::setTtyMode(IPrimaryDevice::TtyMode mode) {
-    return mDevice->setParam(AUDIO_PARAMETER_KEY_TTY_MODE,
-                             static_cast<int>(mode));
+    return mDevice->setParam(AUDIO_PARAMETER_KEY_TTY_MODE, static_cast<int>(mode));
 }
 
 Return<void> PrimaryDevice::getHacEnabled(getHacEnabled_cb _hidl_cb) {
@@ -204,7 +189,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
diff --git a/audio/2.0/default/Stream.h b/audio/core/all-versions/default/include/core/all-versions/default/Stream.h
similarity index 64%
rename from audio/2.0/default/Stream.h
rename to audio/core/all-versions/default/include/core/all-versions/default/Stream.h
index e29af53..4196dec 100644
--- a/audio/2.0/default/Stream.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Stream.h
@@ -14,32 +14,28 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_AUDIO_V2_0_STREAM_H
-#define ANDROID_HARDWARE_AUDIO_V2_0_STREAM_H
+#include <common/all-versions/IncludeGuard.h>
 
 #include <vector>
 
-#include <android/hardware/audio/2.0/IStream.h>
 #include <hardware/audio.h>
 #include <hidl/Status.h>
 
 #include <hidl/MQDescriptor.h>
 
-#include "ParametersUtil.h"
-
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-using ::android::hardware::audio::common::V2_0::AudioChannelMask;
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioFormat;
-using ::android::hardware::audio::V2_0::DeviceAddress;
-using ::android::hardware::audio::V2_0::IStream;
-using ::android::hardware::audio::V2_0::ParameterValue;
-using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioChannelMask;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioFormat;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::DeviceAddress;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStream;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::ParameterValue;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
 using ::android::hardware::hidl_vec;
@@ -56,36 +52,36 @@
      */
     static constexpr uint32_t MAX_BUFFER_SIZE = 2 << 30 /* == 1GiB */;
 
-    // Methods from ::android::hardware::audio::V2_0::IStream follow.
-    Return<uint64_t> getFrameSize()  override;
-    Return<uint64_t> getFrameCount()  override;
-    Return<uint64_t> getBufferSize()  override;
-    Return<uint32_t> getSampleRate()  override;
-    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
-    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
-    Return<AudioChannelMask> getChannelMask()  override;
-    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
-    Return<Result> setChannelMask(AudioChannelMask mask)  override;
-    Return<AudioFormat> getFormat()  override;
-    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
-    Return<Result> setFormat(AudioFormat format)  override;
-    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
-    Return<Result> addEffect(uint64_t effectId)  override;
-    Return<Result> removeEffect(uint64_t effectId)  override;
-    Return<Result> standby()  override;
-    Return<AudioDevice> getDevice()  override;
-    Return<Result> setDevice(const DeviceAddress& address)  override;
-    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
-    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
-    Return<void> getParameters(
-            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
-    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
-    Return<void> debugDump(const hidl_handle& fd)  override;
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStream follow.
+    Return<uint64_t> getFrameSize() override;
+    Return<uint64_t> getFrameCount() override;
+    Return<uint64_t> getBufferSize() override;
+    Return<uint32_t> getSampleRate() override;
+    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb) override;
+    Return<Result> setSampleRate(uint32_t sampleRateHz) override;
+    Return<AudioChannelMask> getChannelMask() override;
+    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb) override;
+    Return<Result> setChannelMask(AudioChannelMask mask) override;
+    Return<AudioFormat> getFormat() override;
+    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb) override;
+    Return<Result> setFormat(AudioFormat format) override;
+    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb) override;
+    Return<Result> addEffect(uint64_t effectId) override;
+    Return<Result> removeEffect(uint64_t effectId) override;
+    Return<Result> standby() override;
+    Return<AudioDevice> getDevice() override;
+    Return<Result> setDevice(const DeviceAddress& address) override;
+    Return<Result> setConnectedState(const DeviceAddress& address, bool connected) override;
+    Return<Result> setHwAvSync(uint32_t hwAvSync) override;
+    Return<void> getParameters(const hidl_vec<hidl_string>& keys,
+                               getParameters_cb _hidl_cb) override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters) override;
+    Return<void> debugDump(const hidl_handle& fd) override;
     Return<Result> start() override;
     Return<Result> stop() override;
     Return<void> createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) override;
     Return<void> getMmapPosition(getMmapPosition_cb _hidl_cb) override;
-    Return<Result> close()  override;
+    Return<Result> close() override;
 
     // Utility methods for extending interfaces.
     static Result analyzeStatus(const char* funcName, int status);
@@ -93,7 +89,7 @@
                                 const std::vector<int>& ignoreErrors);
 
    private:
-    audio_stream_t *mStream;
+    audio_stream_t* mStream;
 
     virtual ~Stream();
 
@@ -102,21 +98,20 @@
     int halSetParameters(const char* keysAndValues) override;
 };
 
-
 template <typename T>
 struct StreamMmap : public RefBase {
     explicit StreamMmap(T* stream) : mStream(stream) {}
 
     Return<Result> start();
     Return<Result> stop();
-    Return<void> createMmapBuffer(
-            int32_t minSizeFrames, size_t frameSize, IStream::createMmapBuffer_cb _hidl_cb);
+    Return<void> createMmapBuffer(int32_t minSizeFrames, size_t frameSize,
+                                  IStream::createMmapBuffer_cb _hidl_cb);
     Return<void> getMmapPosition(IStream::getMmapPosition_cb _hidl_cb);
 
- private:
-   StreamMmap() {}
+   private:
+    StreamMmap() {}
 
-   T *mStream;
+    T* mStream;
 };
 
 template <typename T>
@@ -143,13 +138,12 @@
     if (mStream->create_mmap_buffer != NULL) {
         struct audio_mmap_buffer_info halInfo;
         retval = Stream::analyzeStatus(
-                "create_mmap_buffer",
-                mStream->create_mmap_buffer(mStream, minSizeFrames, &halInfo));
+            "create_mmap_buffer", mStream->create_mmap_buffer(mStream, minSizeFrames, &halInfo));
         if (retval == Result::OK) {
             hidlHandle = native_handle_create(1, 0);
             hidlHandle->data[0] = halInfo.shared_memory_fd;
-            info.sharedMemory = hidl_memory("audio_buffer", hidlHandle,
-                                            frameSize *halInfo.buffer_size_frames);
+            info.sharedMemory =
+                hidl_memory("audio_buffer", hidlHandle, frameSize * halInfo.buffer_size_frames);
             info.bufferSizeFrames = halInfo.buffer_size_frames;
             info.burstSizeFrames = halInfo.burst_size_frames;
         }
@@ -168,9 +162,8 @@
 
     if (mStream->get_mmap_position != NULL) {
         struct audio_mmap_position halPosition;
-        retval = Stream::analyzeStatus(
-                "get_mmap_position",
-                mStream->get_mmap_position(mStream, &halPosition));
+        retval = Stream::analyzeStatus("get_mmap_position",
+                                       mStream->get_mmap_position(mStream, &halPosition));
         if (retval == Result::OK) {
             position.timeNanoseconds = halPosition.time_nanoseconds;
             position.positionFrames = halPosition.position_frames;
@@ -181,9 +174,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_V2_0_STREAM_H
diff --git a/audio/2.0/default/Stream.cpp b/audio/core/all-versions/default/include/core/all-versions/default/Stream.impl.h
similarity index 69%
rename from audio/2.0/default/Stream.cpp
rename to audio/core/all-versions/default/include/core/all-versions/default/Stream.impl.h
index effdd28..92cff72 100644
--- a/audio/2.0/default/Stream.cpp
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Stream.impl.h
@@ -14,30 +14,24 @@
  * limitations under the License.
  */
 
+#include <common/all-versions/IncludeGuard.h>
+
 #include <inttypes.h>
 
-#define LOG_TAG "StreamHAL"
-
+#include <android/log.h>
 #include <hardware/audio.h>
 #include <hardware/audio_effect.h>
 #include <media/TypeConverter.h>
-#include <android/log.h>
 #include <utils/SortedVector.h>
 #include <utils/Vector.h>
 
-#include "Conversions.h"
-#include "EffectMap.h"
-#include "Stream.h"
-
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-Stream::Stream(audio_stream_t* stream)
-        : mStream(stream) {
-}
+Stream::Stream(audio_stream_t* stream) : mStream(stream) {}
 
 Stream::~Stream() {
     mStream = nullptr;
@@ -61,12 +55,18 @@
         ALOGW("Error from HAL stream in function %s: %s", funcName, strerror(-status));
     }
     switch (status) {
-        case 0: return Result::OK;
-        case -EINVAL: return Result::INVALID_ARGUMENTS;
-        case -ENODATA: return Result::INVALID_STATE;
-        case -ENODEV: return Result::NOT_INITIALIZED;
-        case -ENOSYS: return Result::NOT_SUPPORTED;
-        default: return Result::INVALID_STATE;
+        case 0:
+            return Result::OK;
+        case -EINVAL:
+            return Result::INVALID_ARGUMENTS;
+        case -ENODATA:
+            return Result::INVALID_STATE;
+        case -ENODEV:
+            return Result::NOT_INITIALIZED;
+        case -ENOSYS:
+            return Result::NOT_SUPPORTED;
+        default:
+            return Result::INVALID_STATE;
     }
 }
 
@@ -78,76 +78,76 @@
     return mStream->set_parameters(mStream, keysAndValues);
 }
 
-// Methods from ::android::hardware::audio::V2_0::IStream follow.
-Return<uint64_t> Stream::getFrameSize()  {
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStream follow.
+Return<uint64_t> Stream::getFrameSize() {
     // Needs to be implemented by interface subclasses. But can't be declared as pure virtual,
     // since interface subclasses implementation do not inherit from this class.
     LOG_ALWAYS_FATAL("Stream::getFrameSize is pure abstract");
-    return uint64_t {};
+    return uint64_t{};
 }
 
-Return<uint64_t> Stream::getFrameCount()  {
+Return<uint64_t> Stream::getFrameCount() {
     int halFrameCount;
     Result retval = getParam(AudioParameter::keyFrameCount, &halFrameCount);
     return retval == Result::OK ? halFrameCount : 0;
 }
 
-Return<uint64_t> Stream::getBufferSize()  {
+Return<uint64_t> Stream::getBufferSize() {
     return mStream->get_buffer_size(mStream);
 }
 
-Return<uint32_t> Stream::getSampleRate()  {
+Return<uint32_t> Stream::getSampleRate() {
     return mStream->get_sample_rate(mStream);
 }
 
-Return<void> Stream::getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  {
+Return<void> Stream::getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb) {
     String8 halListValue;
     Result result = getParam(AudioParameter::keyStreamSupportedSamplingRates, &halListValue);
     hidl_vec<uint32_t> sampleRates;
     SortedVector<uint32_t> halSampleRates;
     if (result == Result::OK) {
-        halSampleRates = samplingRatesFromString(
-                halListValue.string(), AudioParameter::valueListSeparator);
+        halSampleRates =
+            samplingRatesFromString(halListValue.string(), AudioParameter::valueListSeparator);
         sampleRates.setToExternal(halSampleRates.editArray(), halSampleRates.size());
     }
     _hidl_cb(sampleRates);
     return Void();
 }
 
-Return<Result> Stream::setSampleRate(uint32_t sampleRateHz)  {
+Return<Result> Stream::setSampleRate(uint32_t sampleRateHz) {
     return setParam(AudioParameter::keySamplingRate, static_cast<int>(sampleRateHz));
 }
 
-Return<AudioChannelMask> Stream::getChannelMask()  {
+Return<AudioChannelMask> Stream::getChannelMask() {
     return AudioChannelMask(mStream->get_channels(mStream));
 }
 
-Return<void> Stream::getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  {
+Return<void> Stream::getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb) {
     String8 halListValue;
     Result result = getParam(AudioParameter::keyStreamSupportedChannels, &halListValue);
     hidl_vec<AudioChannelMask> channelMasks;
     SortedVector<audio_channel_mask_t> halChannelMasks;
     if (result == Result::OK) {
-        halChannelMasks = channelMasksFromString(
-                halListValue.string(), AudioParameter::valueListSeparator);
+        halChannelMasks =
+            channelMasksFromString(halListValue.string(), AudioParameter::valueListSeparator);
         channelMasks.resize(halChannelMasks.size());
         for (size_t i = 0; i < halChannelMasks.size(); ++i) {
             channelMasks[i] = AudioChannelMask(halChannelMasks[i]);
         }
     }
-     _hidl_cb(channelMasks);
+    _hidl_cb(channelMasks);
     return Void();
 }
 
-Return<Result> Stream::setChannelMask(AudioChannelMask mask)  {
+Return<Result> Stream::setChannelMask(AudioChannelMask mask) {
     return setParam(AudioParameter::keyChannels, static_cast<int>(mask));
 }
 
-Return<AudioFormat> Stream::getFormat()  {
+Return<AudioFormat> Stream::getFormat() {
     return AudioFormat(mStream->get_format(mStream));
 }
 
-Return<void> Stream::getSupportedFormats(getSupportedFormats_cb _hidl_cb)  {
+Return<void> Stream::getSupportedFormats(getSupportedFormats_cb _hidl_cb) {
     String8 halListValue;
     Result result = getParam(AudioParameter::keyStreamSupportedFormats, &halListValue);
     hidl_vec<AudioFormat> formats;
@@ -159,15 +159,15 @@
             formats[i] = AudioFormat(halFormats[i]);
         }
     }
-     _hidl_cb(formats);
+    _hidl_cb(formats);
     return Void();
 }
 
-Return<Result> Stream::setFormat(AudioFormat format)  {
+Return<Result> Stream::setFormat(AudioFormat format) {
     return setParam(AudioParameter::keyFormat, static_cast<int>(format));
 }
 
-Return<void> Stream::getAudioProperties(getAudioProperties_cb _hidl_cb)  {
+Return<void> Stream::getAudioProperties(getAudioProperties_cb _hidl_cb) {
     uint32_t halSampleRate = mStream->get_sample_rate(mStream);
     audio_channel_mask_t halMask = mStream->get_channels(mStream);
     audio_format_t halFormat = mStream->get_format(mStream);
@@ -175,7 +175,7 @@
     return Void();
 }
 
-Return<Result> Stream::addEffect(uint64_t effectId)  {
+Return<Result> Stream::addEffect(uint64_t effectId) {
     effect_handle_t halEffect = EffectMap::getInstance().get(effectId);
     if (halEffect != NULL) {
         return analyzeStatus("add_audio_effect", mStream->add_audio_effect(mStream, halEffect));
@@ -185,94 +185,92 @@
     }
 }
 
-Return<Result> Stream::removeEffect(uint64_t effectId)  {
+Return<Result> Stream::removeEffect(uint64_t effectId) {
     effect_handle_t halEffect = EffectMap::getInstance().get(effectId);
     if (halEffect != NULL) {
-        return analyzeStatus(
-                "remove_audio_effect", mStream->remove_audio_effect(mStream, halEffect));
+        return analyzeStatus("remove_audio_effect",
+                             mStream->remove_audio_effect(mStream, halEffect));
     } else {
         ALOGW("Invalid effect ID passed from client: %" PRIu64, effectId);
         return Result::INVALID_ARGUMENTS;
     }
 }
 
-Return<Result> Stream::standby()  {
+Return<Result> Stream::standby() {
     return analyzeStatus("standby", mStream->standby(mStream));
 }
 
-Return<AudioDevice> Stream::getDevice()  {
+Return<AudioDevice> Stream::getDevice() {
     int device;
     Result retval = getParam(AudioParameter::keyRouting, &device);
     return retval == Result::OK ? static_cast<AudioDevice>(device) : AudioDevice::NONE;
 }
 
-Return<Result> Stream::setDevice(const DeviceAddress& address)  {
-    char* halDeviceAddress =
-            audio_device_address_to_parameter(
-                    static_cast<audio_devices_t>(address.device),
-                    deviceAddressToHal(address).c_str());
+Return<Result> Stream::setDevice(const DeviceAddress& address) {
+    char* halDeviceAddress = audio_device_address_to_parameter(
+        static_cast<audio_devices_t>(address.device), deviceAddressToHal(address).c_str());
     AudioParameter params((String8(halDeviceAddress)));
     free(halDeviceAddress);
-    params.addInt(
-            String8(AudioParameter::keyRouting), static_cast<audio_devices_t>(address.device));
+    params.addInt(String8(AudioParameter::keyRouting),
+                  static_cast<audio_devices_t>(address.device));
     return setParams(params);
 }
 
-Return<Result> Stream::setConnectedState(const DeviceAddress& address, bool connected)  {
+Return<Result> Stream::setConnectedState(const DeviceAddress& address, bool connected) {
     return setParam(
-            connected ? AudioParameter::keyStreamConnect : AudioParameter::keyStreamDisconnect,
-            deviceAddressToHal(address).c_str());
+        connected ? AudioParameter::keyStreamConnect : AudioParameter::keyStreamDisconnect,
+        deviceAddressToHal(address).c_str());
 }
 
-Return<Result> Stream::setHwAvSync(uint32_t hwAvSync)  {
+Return<Result> Stream::setHwAvSync(uint32_t hwAvSync) {
     return setParam(AudioParameter::keyStreamHwAvSync, static_cast<int>(hwAvSync));
 }
 
-Return<void> Stream::getParameters(const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  {
+Return<void> Stream::getParameters(const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb) {
     getParametersImpl(keys, _hidl_cb);
     return Void();
 }
 
-Return<Result> Stream::setParameters(const hidl_vec<ParameterValue>& parameters)  {
+Return<Result> Stream::setParameters(const hidl_vec<ParameterValue>& parameters) {
     return setParametersImpl(parameters);
 }
 
-Return<void> Stream::debugDump(const hidl_handle& fd)  {
+Return<void> Stream::debugDump(const hidl_handle& fd) {
     if (fd.getNativeHandle() != nullptr && fd->numFds == 1) {
         analyzeStatus("dump", mStream->dump(mStream, fd->data[0]));
     }
     return Void();
 }
 
-Return<Result>  Stream::start() {
+Return<Result> Stream::start() {
     return Result::NOT_SUPPORTED;
 }
 
-Return<Result>  Stream::stop() {
+Return<Result> Stream::stop() {
     return Result::NOT_SUPPORTED;
 }
 
-Return<void>  Stream::createMmapBuffer(int32_t minSizeFrames __unused,
-                                       createMmapBuffer_cb _hidl_cb) {
+Return<void> Stream::createMmapBuffer(int32_t minSizeFrames __unused,
+                                      createMmapBuffer_cb _hidl_cb) {
     Result retval(Result::NOT_SUPPORTED);
     MmapBufferInfo info;
     _hidl_cb(retval, info);
     return Void();
 }
 
-Return<void>  Stream::getMmapPosition(getMmapPosition_cb _hidl_cb) {
+Return<void> Stream::getMmapPosition(getMmapPosition_cb _hidl_cb) {
     Result retval(Result::NOT_SUPPORTED);
     MmapPosition position;
     _hidl_cb(retval, position);
     return Void();
 }
 
-Return<Result> Stream::close()  {
+Return<Result> Stream::close() {
     return Result::NOT_SUPPORTED;
 }
 
-} // namespace implementation
-}  // namespace V2_0
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.h b/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.h
new file mode 100644
index 0000000..7380dae
--- /dev/null
+++ b/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <atomic>
+#include <memory>
+
+#include <fmq/EventFlag.h>
+#include <fmq/MessageQueue.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <utils/Thread.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioChannelMask;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioFormat;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::DeviceAddress;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStream;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamIn;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::ParameterValue;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct StreamIn : public IStreamIn {
+    typedef MessageQueue<ReadParameters, kSynchronizedReadWrite> CommandMQ;
+    typedef MessageQueue<uint8_t, kSynchronizedReadWrite> DataMQ;
+    typedef MessageQueue<ReadStatus, kSynchronizedReadWrite> StatusMQ;
+
+    StreamIn(const sp<Device>& device, audio_stream_in_t* stream);
+
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStream follow.
+    Return<uint64_t> getFrameSize() override;
+    Return<uint64_t> getFrameCount() override;
+    Return<uint64_t> getBufferSize() override;
+    Return<uint32_t> getSampleRate() override;
+    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb) override;
+    Return<Result> setSampleRate(uint32_t sampleRateHz) override;
+    Return<AudioChannelMask> getChannelMask() override;
+    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb) override;
+    Return<Result> setChannelMask(AudioChannelMask mask) override;
+    Return<AudioFormat> getFormat() override;
+    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb) override;
+    Return<Result> setFormat(AudioFormat format) override;
+    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb) override;
+    Return<Result> addEffect(uint64_t effectId) override;
+    Return<Result> removeEffect(uint64_t effectId) override;
+    Return<Result> standby() override;
+    Return<AudioDevice> getDevice() override;
+    Return<Result> setDevice(const DeviceAddress& address) override;
+    Return<Result> setConnectedState(const DeviceAddress& address, bool connected) override;
+    Return<Result> setHwAvSync(uint32_t hwAvSync) override;
+    Return<void> getParameters(const hidl_vec<hidl_string>& keys,
+                               getParameters_cb _hidl_cb) override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters) override;
+    Return<void> debugDump(const hidl_handle& fd) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamIn follow.
+    Return<void> getAudioSource(getAudioSource_cb _hidl_cb) override;
+    Return<Result> setGain(float gain) override;
+    Return<void> prepareForReading(uint32_t frameSize, uint32_t framesCount,
+                                   prepareForReading_cb _hidl_cb) override;
+    Return<uint32_t> getInputFramesLost() override;
+    Return<void> getCapturePosition(getCapturePosition_cb _hidl_cb) override;
+    Return<Result> start() override;
+    Return<Result> stop() override;
+    Return<void> createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) override;
+    Return<void> getMmapPosition(getMmapPosition_cb _hidl_cb) override;
+
+    static Result getCapturePositionImpl(audio_stream_in_t* stream, uint64_t* frames,
+                                         uint64_t* time);
+
+   private:
+    bool mIsClosed;
+    const sp<Device> mDevice;
+    audio_stream_in_t* mStream;
+    const sp<Stream> mStreamCommon;
+    const sp<StreamMmap<audio_stream_in_t>> mStreamMmap;
+    std::unique_ptr<CommandMQ> mCommandMQ;
+    std::unique_ptr<DataMQ> mDataMQ;
+    std::unique_ptr<StatusMQ> mStatusMQ;
+    EventFlag* mEfGroup;
+    std::atomic<bool> mStopReadThread;
+    sp<Thread> mReadThread;
+
+    virtual ~StreamIn();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/StreamIn.cpp b/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.impl.h
similarity index 82%
rename from audio/2.0/default/StreamIn.cpp
rename to audio/core/all-versions/default/include/core/all-versions/default/StreamIn.impl.h
index 61d5d8e..abee225 100644
--- a/audio/2.0/default/StreamIn.cpp
+++ b/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.impl.h
@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "StreamInHAL"
+#include <common/all-versions/IncludeGuard.h>
+
 //#define LOG_NDEBUG 0
 #define ATRACE_TAG ATRACE_TAG_AUDIO
 
@@ -23,27 +24,24 @@
 #include <utils/Trace.h>
 #include <memory>
 
-#include "StreamIn.h"
-#include "Util.h"
-
-using ::android::hardware::audio::V2_0::MessageQueueFlagBits;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::MessageQueueFlagBits;
+using ::android::hardware::audio::all_versions::implementation::isGainNormalized;
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-using ::android::hardware::audio::common::V2_0::ThreadInfo;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::ThreadInfo;
 
 namespace {
 
 class ReadThread : public Thread {
    public:
     // ReadThread's lifespan never exceeds StreamIn's lifespan.
-    ReadThread(std::atomic<bool>* stop, audio_stream_in_t* stream,
-               StreamIn::CommandMQ* commandMQ, StreamIn::DataMQ* dataMQ,
-               StreamIn::StatusMQ* statusMQ, EventFlag* efGroup)
+    ReadThread(std::atomic<bool>* stop, audio_stream_in_t* stream, StreamIn::CommandMQ* commandMQ,
+               StreamIn::DataMQ* dataMQ, StreamIn::StatusMQ* statusMQ, EventFlag* efGroup)
         : Thread(false /*canCallJava*/),
           mStop(stop),
           mStream(stream),
@@ -99,8 +97,7 @@
 
 void ReadThread::doGetCapturePosition() {
     mStatus.retval = StreamIn::getCapturePositionImpl(
-        mStream, &mStatus.reply.capturePosition.frames,
-        &mStatus.reply.capturePosition.time);
+        mStream, &mStatus.reply.capturePosition.frames, &mStatus.reply.capturePosition.time);
 }
 
 bool ReadThread::threadLoop() {
@@ -109,10 +106,8 @@
     // as the Thread uses mutexes, and this can lead to priority inversion.
     while (!std::atomic_load_explicit(mStop, std::memory_order_acquire)) {
         uint32_t efState = 0;
-        mEfGroup->wait(static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL),
-                       &efState);
-        if (!(efState &
-              static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL))) {
+        mEfGroup->wait(static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL), &efState);
+        if (!(efState & static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL))) {
             continue;  // Nothing to do.
         }
         if (!mCommandMQ->read(&mParameters)) {
@@ -127,8 +122,7 @@
                 doGetCapturePosition();
                 break;
             default:
-                ALOGE("Unknown read thread command code %d",
-                      mParameters.command);
+                ALOGE("Unknown read thread command code %d", mParameters.command);
                 mStatus.retval = Result::NOT_SUPPORTED;
                 break;
         }
@@ -162,14 +156,13 @@
     }
     if (mEfGroup) {
         status_t status = EventFlag::deleteEventFlag(&mEfGroup);
-        ALOGE_IF(status, "read MQ event flag deletion error: %s",
-                 strerror(-status));
+        ALOGE_IF(status, "read MQ event flag deletion error: %s", strerror(-status));
     }
     mDevice->closeInputStream(mStream);
     mStream = nullptr;
 }
 
-// Methods from ::android::hardware::audio::V2_0::IStream follow.
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStream follow.
 Return<uint64_t> StreamIn::getFrameSize() {
     return audio_stream_in_frame_size(mStream);
 }
@@ -186,8 +179,7 @@
     return mStreamCommon->getSampleRate();
 }
 
-Return<void> StreamIn::getSupportedSampleRates(
-    getSupportedSampleRates_cb _hidl_cb) {
+Return<void> StreamIn::getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb) {
     return mStreamCommon->getSupportedSampleRates(_hidl_cb);
 }
 
@@ -199,8 +191,7 @@
     return mStreamCommon->getChannelMask();
 }
 
-Return<void> StreamIn::getSupportedChannelMasks(
-    getSupportedChannelMasks_cb _hidl_cb) {
+Return<void> StreamIn::getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb) {
     return mStreamCommon->getSupportedChannelMasks(_hidl_cb);
 }
 
@@ -244,8 +235,7 @@
     return mStreamCommon->setDevice(address);
 }
 
-Return<Result> StreamIn::setConnectedState(const DeviceAddress& address,
-                                           bool connected) {
+Return<Result> StreamIn::setConnectedState(const DeviceAddress& address, bool connected) {
     return mStreamCommon->setConnectedState(address, connected);
 }
 
@@ -253,13 +243,11 @@
     return mStreamCommon->setHwAvSync(hwAvSync);
 }
 
-Return<void> StreamIn::getParameters(const hidl_vec<hidl_string>& keys,
-                                     getParameters_cb _hidl_cb) {
+Return<void> StreamIn::getParameters(const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb) {
     return mStreamCommon->getParameters(keys, _hidl_cb);
 }
 
-Return<Result> StreamIn::setParameters(
-    const hidl_vec<ParameterValue>& parameters) {
+Return<Result> StreamIn::setParameters(const hidl_vec<ParameterValue>& parameters) {
     return mStreamCommon->setParameters(parameters);
 }
 
@@ -275,10 +263,9 @@
     return mStreamMmap->stop();
 }
 
-Return<void> StreamIn::createMmapBuffer(int32_t minSizeFrames,
-                                        createMmapBuffer_cb _hidl_cb) {
-    return mStreamMmap->createMmapBuffer(
-        minSizeFrames, audio_stream_in_frame_size(mStream), _hidl_cb);
+Return<void> StreamIn::createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) {
+    return mStreamMmap->createMmapBuffer(minSizeFrames, audio_stream_in_frame_size(mStream),
+                                         _hidl_cb);
 }
 
 Return<void> StreamIn::getMmapPosition(getMmapPosition_cb _hidl_cb) {
@@ -297,11 +284,10 @@
     return Result::OK;
 }
 
-// Methods from ::android::hardware::audio::V2_0::IStreamIn follow.
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamIn follow.
 Return<void> StreamIn::getAudioSource(getAudioSource_cb _hidl_cb) {
     int halSource;
-    Result retval =
-        mStreamCommon->getParam(AudioParameter::keyInputSource, &halSource);
+    Result retval = mStreamCommon->getParam(AudioParameter::keyInputSource, &halSource);
     AudioSource source(AudioSource::DEFAULT);
     if (retval == Result::OK) {
         source = AudioSource(halSource);
@@ -318,16 +304,15 @@
     return Stream::analyzeStatus("set_gain", mStream->set_gain(mStream, gain));
 }
 
-Return<void> StreamIn::prepareForReading(uint32_t frameSize,
-                                         uint32_t framesCount,
+Return<void> StreamIn::prepareForReading(uint32_t frameSize, uint32_t framesCount,
                                          prepareForReading_cb _hidl_cb) {
     status_t status;
     ThreadInfo threadInfo = {0, 0};
 
     // Wrap the _hidl_cb to return an error
     auto sendError = [&threadInfo, &_hidl_cb](Result result) {
-        _hidl_cb(result, CommandMQ::Descriptor(), DataMQ::Descriptor(),
-                 StatusMQ::Descriptor(), threadInfo);
+        _hidl_cb(result, CommandMQ::Descriptor(), DataMQ::Descriptor(), StatusMQ::Descriptor(),
+                 threadInfo);
 
     };
 
@@ -341,8 +326,7 @@
 
     // Check frameSize and framesCount
     if (frameSize == 0 || framesCount == 0) {
-        ALOGE("Null frameSize (%u) or framesCount (%u)", frameSize,
-              framesCount);
+        ALOGE("Null frameSize (%u) or framesCount (%u)", frameSize, framesCount);
         sendError(Result::INVALID_ARGUMENTS);
         return Void();
     }
@@ -353,12 +337,10 @@
         sendError(Result::INVALID_ARGUMENTS);
         return Void();
     }
-    std::unique_ptr<DataMQ> tempDataMQ(
-        new DataMQ(frameSize * framesCount, true /* EventFlag */));
+    std::unique_ptr<DataMQ> tempDataMQ(new DataMQ(frameSize * framesCount, true /* EventFlag */));
 
     std::unique_ptr<StatusMQ> tempStatusMQ(new StatusMQ(1));
-    if (!tempCommandMQ->isValid() || !tempDataMQ->isValid() ||
-        !tempStatusMQ->isValid()) {
+    if (!tempCommandMQ->isValid() || !tempDataMQ->isValid() || !tempStatusMQ->isValid()) {
         ALOGE_IF(!tempCommandMQ->isValid(), "command MQ is invalid");
         ALOGE_IF(!tempDataMQ->isValid(), "data MQ is invalid");
         ALOGE_IF(!tempStatusMQ->isValid(), "status MQ is invalid");
@@ -366,8 +348,7 @@
         return Void();
     }
     EventFlag* tempRawEfGroup{};
-    status = EventFlag::createEventFlag(tempDataMQ->getEventFlagWord(),
-                                        &tempRawEfGroup);
+    status = EventFlag::createEventFlag(tempDataMQ->getEventFlagWord(), &tempRawEfGroup);
     std::unique_ptr<EventFlag, void (*)(EventFlag*)> tempElfGroup(
         tempRawEfGroup, [](auto* ef) { EventFlag::deleteEventFlag(&ef); });
     if (status != OK || !tempElfGroup) {
@@ -377,9 +358,9 @@
     }
 
     // Create and launch the thread.
-    auto tempReadThread = std::make_unique<ReadThread>(
-        &mStopReadThread, mStream, tempCommandMQ.get(), tempDataMQ.get(),
-        tempStatusMQ.get(), tempElfGroup.get());
+    auto tempReadThread =
+        std::make_unique<ReadThread>(&mStopReadThread, mStream, tempCommandMQ.get(),
+                                     tempDataMQ.get(), tempStatusMQ.get(), tempElfGroup.get());
     if (!tempReadThread->init()) {
         ALOGW("failed to start reader thread: %s", strerror(-status));
         sendError(Result::INVALID_ARGUMENTS);
@@ -399,8 +380,8 @@
     mEfGroup = tempElfGroup.release();
     threadInfo.pid = getpid();
     threadInfo.tid = mReadThread->getTid();
-    _hidl_cb(Result::OK, *mCommandMQ->getDesc(), *mDataMQ->getDesc(),
-             *mStatusMQ->getDesc(), threadInfo);
+    _hidl_cb(Result::OK, *mCommandMQ->getDesc(), *mDataMQ->getDesc(), *mStatusMQ->getDesc(),
+             threadInfo);
     return Void();
 }
 
@@ -409,8 +390,8 @@
 }
 
 // static
-Result StreamIn::getCapturePositionImpl(audio_stream_in_t* stream,
-                                        uint64_t* frames, uint64_t* time) {
+Result StreamIn::getCapturePositionImpl(audio_stream_in_t* stream, uint64_t* frames,
+                                        uint64_t* time) {
     // HAL may have a stub function, always returning ENOSYS, don't
     // spam the log in this case.
     static const std::vector<int> ignoredErrors{ENOSYS};
@@ -435,7 +416,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.h b/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.h
new file mode 100644
index 0000000..4cfe2e3
--- /dev/null
+++ b/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.h
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <atomic>
+#include <memory>
+
+#include <fmq/EventFlag.h>
+#include <fmq/MessageQueue.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <utils/Thread.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioChannelMask;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioFormat;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::AudioDrain;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::DeviceAddress;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStream;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamOut;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamOutCallback;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::ParameterValue;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::audio::AUDIO_HAL_VERSION::TimeSpec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct StreamOut : public IStreamOut {
+    typedef MessageQueue<WriteCommand, kSynchronizedReadWrite> CommandMQ;
+    typedef MessageQueue<uint8_t, kSynchronizedReadWrite> DataMQ;
+    typedef MessageQueue<WriteStatus, kSynchronizedReadWrite> StatusMQ;
+
+    StreamOut(const sp<Device>& device, audio_stream_out_t* stream);
+
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStream follow.
+    Return<uint64_t> getFrameSize() override;
+    Return<uint64_t> getFrameCount() override;
+    Return<uint64_t> getBufferSize() override;
+    Return<uint32_t> getSampleRate() override;
+    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb) override;
+    Return<Result> setSampleRate(uint32_t sampleRateHz) override;
+    Return<AudioChannelMask> getChannelMask() override;
+    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb) override;
+    Return<Result> setChannelMask(AudioChannelMask mask) override;
+    Return<AudioFormat> getFormat() override;
+    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb) override;
+    Return<Result> setFormat(AudioFormat format) override;
+    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb) override;
+    Return<Result> addEffect(uint64_t effectId) override;
+    Return<Result> removeEffect(uint64_t effectId) override;
+    Return<Result> standby() override;
+    Return<AudioDevice> getDevice() override;
+    Return<Result> setDevice(const DeviceAddress& address) override;
+    Return<Result> setConnectedState(const DeviceAddress& address, bool connected) override;
+    Return<Result> setHwAvSync(uint32_t hwAvSync) override;
+    Return<void> getParameters(const hidl_vec<hidl_string>& keys,
+                               getParameters_cb _hidl_cb) override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters) override;
+    Return<void> debugDump(const hidl_handle& fd) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamOut follow.
+    Return<uint32_t> getLatency() override;
+    Return<Result> setVolume(float left, float right) override;
+    Return<void> prepareForWriting(uint32_t frameSize, uint32_t framesCount,
+                                   prepareForWriting_cb _hidl_cb) override;
+    Return<void> getRenderPosition(getRenderPosition_cb _hidl_cb) override;
+    Return<void> getNextWriteTimestamp(getNextWriteTimestamp_cb _hidl_cb) override;
+    Return<Result> setCallback(const sp<IStreamOutCallback>& callback) override;
+    Return<Result> clearCallback() override;
+    Return<void> supportsPauseAndResume(supportsPauseAndResume_cb _hidl_cb) override;
+    Return<Result> pause() override;
+    Return<Result> resume() override;
+    Return<bool> supportsDrain() override;
+    Return<Result> drain(AudioDrain type) override;
+    Return<Result> flush() override;
+    Return<void> getPresentationPosition(getPresentationPosition_cb _hidl_cb) override;
+    Return<Result> start() override;
+    Return<Result> stop() override;
+    Return<void> createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) override;
+    Return<void> getMmapPosition(getMmapPosition_cb _hidl_cb) override;
+
+    static Result getPresentationPositionImpl(audio_stream_out_t* stream, uint64_t* frames,
+                                              TimeSpec* timeStamp);
+
+   private:
+    bool mIsClosed;
+    const sp<Device> mDevice;
+    audio_stream_out_t* mStream;
+    const sp<Stream> mStreamCommon;
+    const sp<StreamMmap<audio_stream_out_t>> mStreamMmap;
+    sp<IStreamOutCallback> mCallback;
+    std::unique_ptr<CommandMQ> mCommandMQ;
+    std::unique_ptr<DataMQ> mDataMQ;
+    std::unique_ptr<StatusMQ> mStatusMQ;
+    EventFlag* mEfGroup;
+    std::atomic<bool> mStopWriteThread;
+    sp<Thread> mWriteThread;
+
+    virtual ~StreamOut();
+
+    static int asyncCallback(stream_callback_event_t event, void* param, void* cookie);
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/StreamOut.cpp b/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.impl.h
similarity index 80%
rename from audio/2.0/default/StreamOut.cpp
rename to audio/core/all-versions/default/include/core/all-versions/default/StreamOut.impl.h
index 49a6b12..bdbeb38 100644
--- a/audio/2.0/default/StreamOut.cpp
+++ b/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.impl.h
@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "StreamOutHAL"
+#include <common/all-versions/IncludeGuard.h>
+
 //#define LOG_NDEBUG 0
 #define ATRACE_TAG ATRACE_TAG_AUDIO
 
@@ -24,16 +25,14 @@
 #include <hardware/audio.h>
 #include <utils/Trace.h>
 
-#include "StreamOut.h"
-#include "Util.h"
-
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-using ::android::hardware::audio::common::V2_0::ThreadInfo;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::ThreadInfo;
+using ::android::hardware::audio::all_versions::implementation::isGainNormalized;
 
 namespace {
 
@@ -89,9 +88,9 @@
 }
 
 void WriteThread::doGetPresentationPosition() {
-    mStatus.retval = StreamOut::getPresentationPositionImpl(
-        mStream, &mStatus.reply.presentationPosition.frames,
-        &mStatus.reply.presentationPosition.timeStamp);
+    mStatus.retval =
+        StreamOut::getPresentationPositionImpl(mStream, &mStatus.reply.presentationPosition.frames,
+                                               &mStatus.reply.presentationPosition.timeStamp);
 }
 
 void WriteThread::doGetLatency() {
@@ -105,10 +104,8 @@
     // as the Thread uses mutexes, and this can lead to priority inversion.
     while (!std::atomic_load_explicit(mStop, std::memory_order_acquire)) {
         uint32_t efState = 0;
-        mEfGroup->wait(static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY),
-                       &efState);
-        if (!(efState &
-              static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY))) {
+        mEfGroup->wait(static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY), &efState);
+        if (!(efState & static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY))) {
             continue;  // Nothing to do.
         }
         if (!mCommandMQ->read(&mStatus.replyTo)) {
@@ -159,8 +156,7 @@
     }
     if (mEfGroup) {
         status_t status = EventFlag::deleteEventFlag(&mEfGroup);
-        ALOGE_IF(status, "write MQ event flag deletion error: %s",
-                 strerror(-status));
+        ALOGE_IF(status, "write MQ event flag deletion error: %s", strerror(-status));
     }
     mCallback.clear();
     mDevice->closeOutputStream(mStream);
@@ -170,7 +166,7 @@
     mStream = nullptr;
 }
 
-// Methods from ::android::hardware::audio::V2_0::IStream follow.
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStream follow.
 Return<uint64_t> StreamOut::getFrameSize() {
     return audio_stream_out_frame_size(mStream);
 }
@@ -187,8 +183,7 @@
     return mStreamCommon->getSampleRate();
 }
 
-Return<void> StreamOut::getSupportedSampleRates(
-    getSupportedSampleRates_cb _hidl_cb) {
+Return<void> StreamOut::getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb) {
     return mStreamCommon->getSupportedSampleRates(_hidl_cb);
 }
 
@@ -200,8 +195,7 @@
     return mStreamCommon->getChannelMask();
 }
 
-Return<void> StreamOut::getSupportedChannelMasks(
-    getSupportedChannelMasks_cb _hidl_cb) {
+Return<void> StreamOut::getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb) {
     return mStreamCommon->getSupportedChannelMasks(_hidl_cb);
 }
 
@@ -245,8 +239,7 @@
     return mStreamCommon->setDevice(address);
 }
 
-Return<Result> StreamOut::setConnectedState(const DeviceAddress& address,
-                                            bool connected) {
+Return<Result> StreamOut::setConnectedState(const DeviceAddress& address, bool connected) {
     return mStreamCommon->setConnectedState(address, connected);
 }
 
@@ -259,8 +252,7 @@
     return mStreamCommon->getParameters(keys, _hidl_cb);
 }
 
-Return<Result> StreamOut::setParameters(
-    const hidl_vec<ParameterValue>& parameters) {
+Return<Result> StreamOut::setParameters(const hidl_vec<ParameterValue>& parameters) {
     return mStreamCommon->setParameters(parameters);
 }
 
@@ -280,7 +272,7 @@
     return Result::OK;
 }
 
-// Methods from ::android::hardware::audio::V2_0::IStreamOut follow.
+// Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IStreamOut follow.
 Return<uint32_t> StreamOut::getLatency() {
     return mStream->get_latency(mStream);
 }
@@ -290,24 +282,21 @@
         return Result::NOT_SUPPORTED;
     }
     if (!isGainNormalized(left)) {
-        ALOGW("Can not set a stream output volume {%f, %f} outside [0,1]", left,
-              right);
+        ALOGW("Can not set a stream output volume {%f, %f} outside [0,1]", left, right);
         return Result::INVALID_ARGUMENTS;
     }
-    return Stream::analyzeStatus("set_volume",
-                                 mStream->set_volume(mStream, left, right));
+    return Stream::analyzeStatus("set_volume", mStream->set_volume(mStream, left, right));
 }
 
-Return<void> StreamOut::prepareForWriting(uint32_t frameSize,
-                                          uint32_t framesCount,
+Return<void> StreamOut::prepareForWriting(uint32_t frameSize, uint32_t framesCount,
                                           prepareForWriting_cb _hidl_cb) {
     status_t status;
     ThreadInfo threadInfo = {0, 0};
 
     // Wrap the _hidl_cb to return an error
     auto sendError = [&threadInfo, &_hidl_cb](Result result) {
-        _hidl_cb(result, CommandMQ::Descriptor(), DataMQ::Descriptor(),
-                 StatusMQ::Descriptor(), threadInfo);
+        _hidl_cb(result, CommandMQ::Descriptor(), DataMQ::Descriptor(), StatusMQ::Descriptor(),
+                 threadInfo);
 
     };
 
@@ -321,8 +310,7 @@
 
     // Check frameSize and framesCount
     if (frameSize == 0 || framesCount == 0) {
-        ALOGE("Null frameSize (%u) or framesCount (%u)", frameSize,
-              framesCount);
+        ALOGE("Null frameSize (%u) or framesCount (%u)", frameSize, framesCount);
         sendError(Result::INVALID_ARGUMENTS);
         return Void();
     }
@@ -332,12 +320,10 @@
         sendError(Result::INVALID_ARGUMENTS);
         return Void();
     }
-    std::unique_ptr<DataMQ> tempDataMQ(
-        new DataMQ(frameSize * framesCount, true /* EventFlag */));
+    std::unique_ptr<DataMQ> tempDataMQ(new DataMQ(frameSize * framesCount, true /* EventFlag */));
 
     std::unique_ptr<StatusMQ> tempStatusMQ(new StatusMQ(1));
-    if (!tempCommandMQ->isValid() || !tempDataMQ->isValid() ||
-        !tempStatusMQ->isValid()) {
+    if (!tempCommandMQ->isValid() || !tempDataMQ->isValid() || !tempStatusMQ->isValid()) {
         ALOGE_IF(!tempCommandMQ->isValid(), "command MQ is invalid");
         ALOGE_IF(!tempDataMQ->isValid(), "data MQ is invalid");
         ALOGE_IF(!tempStatusMQ->isValid(), "status MQ is invalid");
@@ -345,8 +331,7 @@
         return Void();
     }
     EventFlag* tempRawEfGroup{};
-    status = EventFlag::createEventFlag(tempDataMQ->getEventFlagWord(),
-                                        &tempRawEfGroup);
+    status = EventFlag::createEventFlag(tempDataMQ->getEventFlagWord(), &tempRawEfGroup);
     std::unique_ptr<EventFlag, void (*)(EventFlag*)> tempElfGroup(
         tempRawEfGroup, [](auto* ef) { EventFlag::deleteEventFlag(&ef); });
     if (status != OK || !tempElfGroup) {
@@ -356,9 +341,9 @@
     }
 
     // Create and launch the thread.
-    auto tempWriteThread = std::make_unique<WriteThread>(
-        &mStopWriteThread, mStream, tempCommandMQ.get(), tempDataMQ.get(),
-        tempStatusMQ.get(), tempElfGroup.get());
+    auto tempWriteThread =
+        std::make_unique<WriteThread>(&mStopWriteThread, mStream, tempCommandMQ.get(),
+                                      tempDataMQ.get(), tempStatusMQ.get(), tempElfGroup.get());
     if (!tempWriteThread->init()) {
         ALOGW("failed to start writer thread: %s", strerror(-status));
         sendError(Result::INVALID_ARGUMENTS);
@@ -378,28 +363,25 @@
     mEfGroup = tempElfGroup.release();
     threadInfo.pid = getpid();
     threadInfo.tid = mWriteThread->getTid();
-    _hidl_cb(Result::OK, *mCommandMQ->getDesc(), *mDataMQ->getDesc(),
-             *mStatusMQ->getDesc(), threadInfo);
+    _hidl_cb(Result::OK, *mCommandMQ->getDesc(), *mDataMQ->getDesc(), *mStatusMQ->getDesc(),
+             threadInfo);
     return Void();
 }
 
 Return<void> StreamOut::getRenderPosition(getRenderPosition_cb _hidl_cb) {
     uint32_t halDspFrames;
-    Result retval = Stream::analyzeStatus(
-        "get_render_position",
-        mStream->get_render_position(mStream, &halDspFrames));
+    Result retval = Stream::analyzeStatus("get_render_position",
+                                          mStream->get_render_position(mStream, &halDspFrames));
     _hidl_cb(retval, halDspFrames);
     return Void();
 }
 
-Return<void> StreamOut::getNextWriteTimestamp(
-    getNextWriteTimestamp_cb _hidl_cb) {
+Return<void> StreamOut::getNextWriteTimestamp(getNextWriteTimestamp_cb _hidl_cb) {
     Result retval(Result::NOT_SUPPORTED);
     int64_t timestampUs = 0;
     if (mStream->get_next_write_timestamp != NULL) {
-        retval = Stream::analyzeStatus(
-            "get_next_write_timestamp",
-            mStream->get_next_write_timestamp(mStream, &timestampUs));
+        retval = Stream::analyzeStatus("get_next_write_timestamp",
+                                       mStream->get_next_write_timestamp(mStream, &timestampUs));
     }
     _hidl_cb(retval, timestampUs);
     return Void();
@@ -423,14 +405,13 @@
 }
 
 // static
-int StreamOut::asyncCallback(stream_callback_event_t event, void*,
-                             void* cookie) {
+int StreamOut::asyncCallback(stream_callback_event_t event, void*, void* cookie) {
     // It is guaranteed that the callback thread is joined prior
     // to exiting from StreamOut's destructor. Must *not* use sp<StreamOut>
     // here because it can make this code the last owner of StreamOut,
     // and an attempt to run the destructor on the callback thread
     // will cause a deadlock in the legacy HAL code.
-    StreamOut *self = reinterpret_cast<StreamOut*>(cookie);
+    StreamOut* self = reinterpret_cast<StreamOut*>(cookie);
     // It's correct to hold an sp<> to callback because the reference
     // in the StreamOut instance can be cleared in the meantime. There is
     // no difference on which thread to run IStreamOutCallback's destructor.
@@ -454,22 +435,19 @@
     return 0;
 }
 
-Return<void> StreamOut::supportsPauseAndResume(
-    supportsPauseAndResume_cb _hidl_cb) {
+Return<void> StreamOut::supportsPauseAndResume(supportsPauseAndResume_cb _hidl_cb) {
     _hidl_cb(mStream->pause != NULL, mStream->resume != NULL);
     return Void();
 }
 
 Return<Result> StreamOut::pause() {
-    return mStream->pause != NULL
-               ? Stream::analyzeStatus("pause", mStream->pause(mStream))
-               : Result::NOT_SUPPORTED;
+    return mStream->pause != NULL ? Stream::analyzeStatus("pause", mStream->pause(mStream))
+                                  : Result::NOT_SUPPORTED;
 }
 
 Return<Result> StreamOut::resume() {
-    return mStream->resume != NULL
-               ? Stream::analyzeStatus("resume", mStream->resume(mStream))
-               : Result::NOT_SUPPORTED;
+    return mStream->resume != NULL ? Stream::analyzeStatus("resume", mStream->resume(mStream))
+                                   : Result::NOT_SUPPORTED;
 }
 
 Return<bool> StreamOut::supportsDrain() {
@@ -479,21 +457,17 @@
 Return<Result> StreamOut::drain(AudioDrain type) {
     return mStream->drain != NULL
                ? Stream::analyzeStatus(
-                     "drain",
-                     mStream->drain(mStream,
-                                    static_cast<audio_drain_type_t>(type)))
+                     "drain", mStream->drain(mStream, static_cast<audio_drain_type_t>(type)))
                : Result::NOT_SUPPORTED;
 }
 
 Return<Result> StreamOut::flush() {
-    return mStream->flush != NULL
-               ? Stream::analyzeStatus("flush", mStream->flush(mStream))
-               : Result::NOT_SUPPORTED;
+    return mStream->flush != NULL ? Stream::analyzeStatus("flush", mStream->flush(mStream))
+                                  : Result::NOT_SUPPORTED;
 }
 
 // static
-Result StreamOut::getPresentationPositionImpl(audio_stream_out_t* stream,
-                                              uint64_t* frames,
+Result StreamOut::getPresentationPositionImpl(audio_stream_out_t* stream, uint64_t* frames,
                                               TimeSpec* timeStamp) {
     // Don't logspam on EINVAL--it's normal for get_presentation_position
     // to return it sometimes. EAGAIN may be returned by A2DP audio HAL
@@ -513,8 +487,7 @@
     return retval;
 }
 
-Return<void> StreamOut::getPresentationPosition(
-    getPresentationPosition_cb _hidl_cb) {
+Return<void> StreamOut::getPresentationPosition(getPresentationPosition_cb _hidl_cb) {
     uint64_t frames = 0;
     TimeSpec timeStamp = {0, 0};
     Result retval = getPresentationPositionImpl(mStream, &frames, &timeStamp);
@@ -530,10 +503,9 @@
     return mStreamMmap->stop();
 }
 
-Return<void> StreamOut::createMmapBuffer(int32_t minSizeFrames,
-                                         createMmapBuffer_cb _hidl_cb) {
-    return mStreamMmap->createMmapBuffer(
-        minSizeFrames, audio_stream_out_frame_size(mStream), _hidl_cb);
+Return<void> StreamOut::createMmapBuffer(int32_t minSizeFrames, createMmapBuffer_cb _hidl_cb) {
+    return mStreamMmap->createMmapBuffer(minSizeFrames, audio_stream_out_frame_size(mStream),
+                                         _hidl_cb);
 }
 
 Return<void> StreamOut::getMmapPosition(getMmapPosition_cb _hidl_cb) {
@@ -541,7 +513,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
diff --git a/audio/2.0/default/Util.h b/audio/core/all-versions/default/include/core/all-versions/default/Util.h
similarity index 80%
rename from audio/2.0/default/Util.h
rename to audio/core/all-versions/default/include/core/all-versions/default/Util.h
index 72eea50..39d9dbd 100644
--- a/audio/2.0/default/Util.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Util.h
@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
-#define ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
+#ifndef ANDROID_HARDWARE_AUDIO_DEVICE_ALL_VERSIONS_UTIL_H
+#define ANDROID_HARDWARE_AUDIO_DEVICE_ALL_VERSIONS_UTIL_H
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace all_versions {
 namespace implementation {
 
 /** @return true if gain is between 0 and 1 included. */
@@ -29,9 +29,9 @@
 }
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace all_versions
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
 
-#endif  // ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
+#endif  // ANDROID_HARDWARE_AUDIO_DEVICE_ALL_VERSIONS_UTIL_H
diff --git a/audio/effect/2.0/default/AcousticEchoCancelerEffect.cpp b/audio/effect/2.0/default/AcousticEchoCancelerEffect.cpp
index 7b9ca30..cadc2f1 100644
--- a/audio/effect/2.0/default/AcousticEchoCancelerEffect.cpp
+++ b/audio/effect/2.0/default/AcousticEchoCancelerEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,177 +15,9 @@
  */
 
 #define LOG_TAG "AEC_Effect_HAL"
-#include <system/audio_effects/effect_aec.h>
-#include <android/log.h>
 
 #include "AcousticEchoCancelerEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-AcousticEchoCancelerEffect::AcousticEchoCancelerEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-AcousticEchoCancelerEffect::~AcousticEchoCancelerEffect() {}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> AcousticEchoCancelerEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> AcousticEchoCancelerEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> AcousticEchoCancelerEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> AcousticEchoCancelerEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> AcousticEchoCancelerEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> AcousticEchoCancelerEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> AcousticEchoCancelerEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> AcousticEchoCancelerEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> AcousticEchoCancelerEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> AcousticEchoCancelerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> AcousticEchoCancelerEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> AcousticEchoCancelerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> AcousticEchoCancelerEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> AcousticEchoCancelerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> AcousticEchoCancelerEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> AcousticEchoCancelerEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> AcousticEchoCancelerEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> AcousticEchoCancelerEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> AcousticEchoCancelerEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> AcousticEchoCancelerEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> AcousticEchoCancelerEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IAcousticEchoCancelerEffect follow.
-Return<Result> AcousticEchoCancelerEffect::setEchoDelay(uint32_t echoDelayMs)  {
-    return mEffect->setParam(AEC_PARAM_ECHO_DELAY, echoDelayMs);
-}
-
-Return<void> AcousticEchoCancelerEffect::getEchoDelay(getEchoDelay_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(AEC_PARAM_ECHO_DELAY, _hidl_cb);
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/AcousticEchoCancelerEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/AcousticEchoCancelerEffect.h b/audio/effect/2.0/default/AcousticEchoCancelerEffect.h
index 1ac925d..d36335c 100644
--- a/audio/effect/2.0/default/AcousticEchoCancelerEffect.h
+++ b/audio/effect/2.0/default/AcousticEchoCancelerEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -18,100 +18,11 @@
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_ACOUSTICECHOCANCELEREFFECT_H
 
 #include <android/hardware/audio/effect/2.0/IAcousticEchoCancelerEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::effect::V2_0::IAcousticEchoCancelerEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct AcousticEchoCancelerEffect : public IAcousticEchoCancelerEffect {
-    explicit AcousticEchoCancelerEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IAcousticEchoCancelerEffect follow.
-    Return<Result> setEchoDelay(uint32_t echoDelayMs)  override;
-    Return<void> getEchoDelay(getEchoDelay_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~AcousticEchoCancelerEffect();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/AcousticEchoCancelerEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_ACOUSTICECHOCANCELEREFFECT_H
diff --git a/audio/effect/2.0/default/Android.bp b/audio/effect/2.0/default/Android.bp
index e1072b4..db00988 100644
--- a/audio/effect/2.0/default/Android.bp
+++ b/audio/effect/2.0/default/Android.bp
@@ -31,6 +31,7 @@
         "libhidltransport",
         "liblog",
         "libutils",
+        "android.hardware.audio.common-util",
         "android.hardware.audio.common@2.0",
         "android.hardware.audio.common@2.0-util",
         "android.hardware.audio.effect@2.0",
@@ -38,6 +39,8 @@
     ],
 
     header_libs: [
+        "android.hardware.audio.common.util@all-versions",
+        "android.hardware.audio.effect@all-versions-impl",
         "libaudio_system_headers",
         "libaudioclient_headers",
         "libeffects_headers",
diff --git a/audio/effect/2.0/default/AudioBufferManager.cpp b/audio/effect/2.0/default/AudioBufferManager.cpp
index bba0c4a..39918dd 100644
--- a/audio/effect/2.0/default/AudioBufferManager.cpp
+++ b/audio/effect/2.0/default/AudioBufferManager.cpp
@@ -14,78 +14,8 @@
  * limitations under the License.
  */
 
-#include <atomic>
-
-#include <hidlmemory/mapping.h>
-
 #include "AudioBufferManager.h"
 
-namespace android {
-
-ANDROID_SINGLETON_STATIC_INSTANCE(AudioBufferManager);
-
-bool AudioBufferManager::wrap(const AudioBuffer& buffer, sp<AudioBufferWrapper>* wrapper) {
-    // Check if we have this buffer already
-    std::lock_guard<std::mutex> lock(mLock);
-    ssize_t idx = mBuffers.indexOfKey(buffer.id);
-    if (idx >= 0) {
-        *wrapper = mBuffers[idx].promote();
-        if (*wrapper != nullptr) {
-            (*wrapper)->getHalBuffer()->frameCount = buffer.frameCount;
-            return true;
-        }
-        mBuffers.removeItemsAt(idx);
-    }
-    // Need to create and init a new AudioBufferWrapper.
-    sp<AudioBufferWrapper> tempBuffer(new AudioBufferWrapper(buffer));
-    if (!tempBuffer->init()) return false;
-    *wrapper = tempBuffer;
-    mBuffers.add(buffer.id, *wrapper);
-    return true;
-}
-
-void AudioBufferManager::removeEntry(uint64_t id) {
-    std::lock_guard<std::mutex> lock(mLock);
-    ssize_t idx = mBuffers.indexOfKey(id);
-    if (idx >= 0) mBuffers.removeItemsAt(idx);
-}
-
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-AudioBufferWrapper::AudioBufferWrapper(const AudioBuffer& buffer) :
-        mHidlBuffer(buffer), mHalBuffer{ 0, { nullptr } } {
-}
-
-AudioBufferWrapper::~AudioBufferWrapper() {
-    AudioBufferManager::getInstance().removeEntry(mHidlBuffer.id);
-}
-
-bool AudioBufferWrapper::init() {
-    if (mHalBuffer.raw != nullptr) {
-        ALOGE("An attempt to init AudioBufferWrapper twice");
-        return false;
-    }
-    mHidlMemory = mapMemory(mHidlBuffer.data);
-    if (mHidlMemory == nullptr) {
-        ALOGE("Could not map HIDL memory to IMemory");
-        return false;
-    }
-    mHalBuffer.raw = static_cast<void*>(mHidlMemory->getPointer());
-    if (mHalBuffer.raw == nullptr) {
-        ALOGE("IMemory buffer pointer is null");
-        return false;
-    }
-    mHalBuffer.frameCount = mHidlBuffer.frameCount;
-    return true;
-}
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/AudioBufferManager.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/AudioBufferManager.h b/audio/effect/2.0/default/AudioBufferManager.h
index 6d65995..789fbd1 100644
--- a/audio/effect/2.0/default/AudioBufferManager.h
+++ b/audio/effect/2.0/default/AudioBufferManager.h
@@ -14,69 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef android_hardware_audio_effect_V2_0_AudioBufferManager_H_
-#define android_hardware_audio_effect_V2_0_AudioBufferManager_H_
-
-#include <mutex>
+#ifndef ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_AUDIO_BUFFER_MANAGER_H_
+#define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_AUDIO_BUFFER_MANAGER_H_
 
 #include <android/hardware/audio/effect/2.0/types.h>
-#include <android/hidl/memory/1.0/IMemory.h>
-#include <system/audio_effect.h>
-#include <utils/RefBase.h>
-#include <utils/KeyedVector.h>
-#include <utils/Singleton.h>
 
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hidl::memory::V1_0::IMemory;
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/AudioBufferManager.h>
+#undef AUDIO_HAL_VERSION
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-class AudioBufferWrapper : public RefBase {
-  public:
-    explicit AudioBufferWrapper(const AudioBuffer& buffer);
-    virtual ~AudioBufferWrapper();
-    bool init();
-    audio_buffer_t* getHalBuffer() { return &mHalBuffer; }
-  private:
-    AudioBufferWrapper(const AudioBufferWrapper&) = delete;
-    void operator=(AudioBufferWrapper) = delete;
-
-    AudioBuffer mHidlBuffer;
-    sp<IMemory> mHidlMemory;
-    audio_buffer_t mHalBuffer;
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
-
-using ::android::hardware::audio::effect::V2_0::implementation::AudioBufferWrapper;
-
-namespace android {
-
-// This class needs to be in 'android' ns because Singleton macros require that.
-class AudioBufferManager : public Singleton<AudioBufferManager> {
-  public:
-    bool wrap(const AudioBuffer& buffer, sp<AudioBufferWrapper>* wrapper);
-
-  private:
-    friend class hardware::audio::effect::V2_0::implementation::AudioBufferWrapper;
-
-    // Called by AudioBufferWrapper.
-    void removeEntry(uint64_t id);
-
-    std::mutex mLock;
-    KeyedVector<uint64_t, wp<AudioBufferWrapper>> mBuffers;
-};
-
-}  // namespace android
-
-#endif  // android_hardware_audio_effect_V2_0_AudioBufferManager_H_
+#endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_AUDIO_BUFFER_MANAGER_H_
diff --git a/audio/effect/2.0/default/AutomaticGainControlEffect.cpp b/audio/effect/2.0/default/AutomaticGainControlEffect.cpp
index 62fe5f7..7e00a80 100644
--- a/audio/effect/2.0/default/AutomaticGainControlEffect.cpp
+++ b/audio/effect/2.0/default/AutomaticGainControlEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,223 +15,9 @@
  */
 
 #define LOG_TAG "AGC_Effect_HAL"
-#include <android/log.h>
 
 #include "AutomaticGainControlEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-AutomaticGainControlEffect::AutomaticGainControlEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-AutomaticGainControlEffect::~AutomaticGainControlEffect() {}
-
-void AutomaticGainControlEffect::propertiesFromHal(
-        const t_agc_settings& halProperties,
-        IAutomaticGainControlEffect::AllProperties* properties) {
-    properties->targetLevelMb = halProperties.targetLevel;
-    properties->compGainMb = halProperties.compGain;
-    properties->limiterEnabled = halProperties.limiterEnabled;
-}
-
-void AutomaticGainControlEffect::propertiesToHal(
-        const IAutomaticGainControlEffect::AllProperties& properties,
-        t_agc_settings* halProperties) {
-    halProperties->targetLevel = properties.targetLevelMb;
-    halProperties->compGain = properties.compGainMb;
-    halProperties->limiterEnabled = properties.limiterEnabled;
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> AutomaticGainControlEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> AutomaticGainControlEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> AutomaticGainControlEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> AutomaticGainControlEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> AutomaticGainControlEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> AutomaticGainControlEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> AutomaticGainControlEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> AutomaticGainControlEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> AutomaticGainControlEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> AutomaticGainControlEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> AutomaticGainControlEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> AutomaticGainControlEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> AutomaticGainControlEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> AutomaticGainControlEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> AutomaticGainControlEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> AutomaticGainControlEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> AutomaticGainControlEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> AutomaticGainControlEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> AutomaticGainControlEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> AutomaticGainControlEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> AutomaticGainControlEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> AutomaticGainControlEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> AutomaticGainControlEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IAutomaticGainControlEffect follow.
-Return<Result> AutomaticGainControlEffect::setTargetLevel(int16_t targetLevelMb)  {
-    return mEffect->setParam(AGC_PARAM_TARGET_LEVEL, targetLevelMb);
-}
-
-Return<void> AutomaticGainControlEffect::getTargetLevel(getTargetLevel_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(AGC_PARAM_TARGET_LEVEL, _hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::setCompGain(int16_t compGainMb)  {
-    return mEffect->setParam(AGC_PARAM_COMP_GAIN, compGainMb);
-}
-
-Return<void> AutomaticGainControlEffect::getCompGain(getCompGain_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(AGC_PARAM_COMP_GAIN, _hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::setLimiterEnabled(bool enabled)  {
-    return mEffect->setParam(AGC_PARAM_LIMITER_ENA, enabled);
-}
-
-Return<void> AutomaticGainControlEffect::isLimiterEnabled(isLimiterEnabled_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(AGC_PARAM_LIMITER_ENA, _hidl_cb);
-}
-
-Return<Result> AutomaticGainControlEffect::setAllProperties(const IAutomaticGainControlEffect::AllProperties& properties)  {
-    t_agc_settings halProperties;
-    propertiesToHal(properties, &halProperties);
-    return mEffect->setParam(AGC_PARAM_PROPERTIES, halProperties);
-}
-
-Return<void> AutomaticGainControlEffect::getAllProperties(getAllProperties_cb _hidl_cb)  {
-    t_agc_settings halProperties;
-    Result retval = mEffect->getParam(AGC_PARAM_PROPERTIES, halProperties);
-    AllProperties properties;
-    propertiesFromHal(halProperties, &properties);
-    _hidl_cb(retval, properties);
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/AutomaticGainControlEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/AutomaticGainControlEffect.h b/audio/effect/2.0/default/AutomaticGainControlEffect.h
index 5e1f279..ef440d2 100644
--- a/audio/effect/2.0/default/AutomaticGainControlEffect.h
+++ b/audio/effect/2.0/default/AutomaticGainControlEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -17,117 +17,12 @@
 #ifndef ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_AUTOMATICGAINCONTROLEFFECT_H
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_AUTOMATICGAINCONTROLEFFECT_H
 
-#include <system/audio_effects/effect_agc.h>
-
 #include <android/hardware/audio/effect/2.0/IAutomaticGainControlEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::effect::V2_0::IAutomaticGainControlEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct AutomaticGainControlEffect : public IAutomaticGainControlEffect {
-    explicit AutomaticGainControlEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IAutomaticGainControlEffect follow.
-    Return<Result> setTargetLevel(int16_t targetLevelMb)  override;
-    Return<void> getTargetLevel(getTargetLevel_cb _hidl_cb)  override;
-    Return<Result> setCompGain(int16_t compGainMb)  override;
-    Return<void> getCompGain(getCompGain_cb _hidl_cb)  override;
-    Return<Result> setLimiterEnabled(bool enabled)  override;
-    Return<void> isLimiterEnabled(isLimiterEnabled_cb _hidl_cb)  override;
-    Return<Result> setAllProperties(
-            const IAutomaticGainControlEffect::AllProperties& properties)  override;
-    Return<void> getAllProperties(getAllProperties_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~AutomaticGainControlEffect();
-
-    void propertiesFromHal(
-            const t_agc_settings& halProperties,
-            IAutomaticGainControlEffect::AllProperties* properties);
-    void propertiesToHal(
-            const IAutomaticGainControlEffect::AllProperties& properties,
-            t_agc_settings* halProperties);
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/AutomaticGainControlEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_AUTOMATICGAINCONTROLEFFECT_H
diff --git a/audio/effect/2.0/default/BassBoostEffect.cpp b/audio/effect/2.0/default/BassBoostEffect.cpp
index 8f35e5f..df9e892 100644
--- a/audio/effect/2.0/default/BassBoostEffect.cpp
+++ b/audio/effect/2.0/default/BassBoostEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,181 +15,9 @@
  */
 
 #define LOG_TAG "BassBoost_HAL"
-#include <system/audio_effects/effect_bassboost.h>
-#include <android/log.h>
 
 #include "BassBoostEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-BassBoostEffect::BassBoostEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-BassBoostEffect::~BassBoostEffect() {}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> BassBoostEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> BassBoostEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> BassBoostEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> BassBoostEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> BassBoostEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> BassBoostEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> BassBoostEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> BassBoostEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> BassBoostEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> BassBoostEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> BassBoostEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> BassBoostEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> BassBoostEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> BassBoostEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> BassBoostEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> BassBoostEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> BassBoostEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> BassBoostEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> BassBoostEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> BassBoostEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> BassBoostEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> BassBoostEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> BassBoostEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> BassBoostEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> BassBoostEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> BassBoostEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> BassBoostEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> BassBoostEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IBassBoostEffect follow.
-Return<void> BassBoostEffect::isStrengthSupported(isStrengthSupported_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(BASSBOOST_PARAM_STRENGTH_SUPPORTED, _hidl_cb);
-}
-
-Return<Result> BassBoostEffect::setStrength(uint16_t strength)  {
-    return mEffect->setParam(BASSBOOST_PARAM_STRENGTH, strength);
-}
-
-Return<void> BassBoostEffect::getStrength(getStrength_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(BASSBOOST_PARAM_STRENGTH, _hidl_cb);
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/BassBoostEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/BassBoostEffect.h b/audio/effect/2.0/default/BassBoostEffect.h
index 1e5053b..83179e2 100644
--- a/audio/effect/2.0/default/BassBoostEffect.h
+++ b/audio/effect/2.0/default/BassBoostEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -18,101 +18,13 @@
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_BASSBOOSTEFFECT_H
 
 #include <android/hardware/audio/effect/2.0/IBassBoostEffect.h>
-#include <hidl/Status.h>
 
 #include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::effect::V2_0::IBassBoostEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct BassBoostEffect : public IBassBoostEffect {
-    explicit BassBoostEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IBassBoostEffect follow.
-    Return<void> isStrengthSupported(isStrengthSupported_cb _hidl_cb)  override;
-    Return<Result> setStrength(uint16_t strength)  override;
-    Return<void> getStrength(getStrength_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~BassBoostEffect();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/BassBoostEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_BASSBOOSTEFFECT_H
diff --git a/audio/effect/2.0/default/Conversions.cpp b/audio/effect/2.0/default/Conversions.cpp
index e7d4c46..b59752c 100644
--- a/audio/effect/2.0/default/Conversions.cpp
+++ b/audio/effect/2.0/default/Conversions.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -14,50 +14,11 @@
  * limitations under the License.
  */
 
-#include <memory.h>
-#include <stdio.h>
-
 #include "Conversions.h"
 #include "HidlUtils.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
+using ::android::hardware::audio::common::V2_0::HidlUtils;
 
-void effectDescriptorFromHal(
-        const effect_descriptor_t& halDescriptor, EffectDescriptor* descriptor) {
-    HidlUtils::uuidFromHal(halDescriptor.type, &descriptor->type);
-    HidlUtils::uuidFromHal(halDescriptor.uuid, &descriptor->uuid);
-    descriptor->flags = EffectFlags(halDescriptor.flags);
-    descriptor->cpuLoad = halDescriptor.cpuLoad;
-    descriptor->memoryUsage = halDescriptor.memoryUsage;
-    memcpy(descriptor->name.data(), halDescriptor.name, descriptor->name.size());
-    memcpy(descriptor->implementor.data(),
-            halDescriptor.implementor, descriptor->implementor.size());
-}
-
-std::string uuidToString(const effect_uuid_t& halUuid) {
-    char str[64];
-    snprintf(str, sizeof(str), "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x",
-            halUuid.timeLow,
-            halUuid.timeMid,
-            halUuid.timeHiAndVersion,
-            halUuid.clockSeq,
-            halUuid.node[0],
-            halUuid.node[1],
-            halUuid.node[2],
-            halUuid.node[3],
-            halUuid.node[4],
-            halUuid.node[5]);
-    return str;
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/Conversions.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/Conversions.h b/audio/effect/2.0/default/Conversions.h
index 7cef362..94c7f66 100644
--- a/audio/effect/2.0/default/Conversions.h
+++ b/audio/effect/2.0/default/Conversions.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -14,32 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef android_hardware_audio_effect_V2_0_Conversions_H_
-#define android_hardware_audio_effect_V2_0_Conversions_H_
-
-#include <string>
+#ifndef ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_CONVERSIONS_H_
+#define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_CONVERSIONS_H_
 
 #include <android/hardware/audio/effect/2.0/types.h>
-#include <system/audio_effect.h>
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/Conversions.h>
+#undef AUDIO_HAL_VERSION
 
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-
-void effectDescriptorFromHal(
-        const effect_descriptor_t& halDescriptor, EffectDescriptor* descriptor);
-std::string uuidToString(const effect_uuid_t& halUuid);
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
-
-#endif  // android_hardware_audio_effect_V2_0_Conversions_H_
+#endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_CONVERSIONS_H_
diff --git a/audio/effect/2.0/default/DownmixEffect.cpp b/audio/effect/2.0/default/DownmixEffect.cpp
index 92f15bd..1a51e13 100644
--- a/audio/effect/2.0/default/DownmixEffect.cpp
+++ b/audio/effect/2.0/default/DownmixEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,180 +15,9 @@
  */
 
 #define LOG_TAG "Downmix_HAL"
-#include <system/audio_effects/effect_downmix.h>
-#include <android/log.h>
 
 #include "DownmixEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-DownmixEffect::DownmixEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-DownmixEffect::~DownmixEffect() {}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> DownmixEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> DownmixEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> DownmixEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> DownmixEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> DownmixEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> DownmixEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> DownmixEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> DownmixEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> DownmixEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> DownmixEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> DownmixEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> DownmixEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> DownmixEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> DownmixEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> DownmixEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> DownmixEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> DownmixEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> DownmixEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> DownmixEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> DownmixEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> DownmixEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> DownmixEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> DownmixEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> DownmixEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> DownmixEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> DownmixEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> DownmixEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> DownmixEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IDownmixEffect follow.
-Return<Result> DownmixEffect::setType(IDownmixEffect::Type preset)  {
-    return mEffect->setParam(DOWNMIX_PARAM_TYPE, static_cast<downmix_type_t>(preset));
-}
-
-Return<void> DownmixEffect::getType(getType_cb _hidl_cb)  {
-    downmix_type_t halPreset = DOWNMIX_TYPE_INVALID;
-    Result retval = mEffect->getParam(DOWNMIX_PARAM_TYPE, halPreset);
-    _hidl_cb(retval, Type(halPreset));
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/DownmixEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/DownmixEffect.h b/audio/effect/2.0/default/DownmixEffect.h
index 125f34d..6dbbb32 100644
--- a/audio/effect/2.0/default/DownmixEffect.h
+++ b/audio/effect/2.0/default/DownmixEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -18,100 +18,11 @@
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_DOWNMIXEFFECT_H
 
 #include <android/hardware/audio/effect/2.0/IDownmixEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::effect::V2_0::IDownmixEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct DownmixEffect : public IDownmixEffect {
-    explicit DownmixEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IDownmixEffect follow.
-    Return<Result> setType(IDownmixEffect::Type preset)  override;
-    Return<void> getType(getType_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~DownmixEffect();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/DownmixEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_DOWNMIXEFFECT_H
diff --git a/audio/effect/2.0/default/Effect.cpp b/audio/effect/2.0/default/Effect.cpp
index 184607e..e234e52 100644
--- a/audio/effect/2.0/default/Effect.cpp
+++ b/audio/effect/2.0/default/Effect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -19,746 +19,10 @@
 #define LOG_TAG "EffectHAL"
 #define ATRACE_TAG ATRACE_TAG_AUDIO
 
-#include <android/log.h>
-#include <media/EffectsFactoryApi.h>
-#include <utils/Trace.h>
-
 #include "Conversions.h"
 #include "Effect.h"
-#include "EffectMap.h"
+#include "common/all-versions/default/EffectMap.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioChannelMask;
-using ::android::hardware::audio::common::V2_0::AudioFormat;
-using ::android::hardware::audio::effect::V2_0::MessageQueueFlagBits;
-
-namespace {
-
-class ProcessThread : public Thread {
-  public:
-    // ProcessThread's lifespan never exceeds Effect's lifespan.
-    ProcessThread(std::atomic<bool>* stop,
-            effect_handle_t effect,
-            std::atomic<audio_buffer_t*>* inBuffer,
-            std::atomic<audio_buffer_t*>* outBuffer,
-            Effect::StatusMQ* statusMQ,
-            EventFlag* efGroup)
-            : Thread(false /*canCallJava*/),
-              mStop(stop),
-              mEffect(effect),
-              mHasProcessReverse((*mEffect)->process_reverse != NULL),
-              mInBuffer(inBuffer),
-              mOutBuffer(outBuffer),
-              mStatusMQ(statusMQ),
-              mEfGroup(efGroup) {
-    }
-    virtual ~ProcessThread() {}
-
-  private:
-    std::atomic<bool>* mStop;
-    effect_handle_t mEffect;
-    bool mHasProcessReverse;
-    std::atomic<audio_buffer_t*>* mInBuffer;
-    std::atomic<audio_buffer_t*>* mOutBuffer;
-    Effect::StatusMQ* mStatusMQ;
-    EventFlag* mEfGroup;
-
-    bool threadLoop() override;
-};
-
-bool ProcessThread::threadLoop() {
-    // This implementation doesn't return control back to the Thread until it decides to stop,
-    // as the Thread uses mutexes, and this can lead to priority inversion.
-    while(!std::atomic_load_explicit(mStop, std::memory_order_acquire)) {
-        uint32_t efState = 0;
-        mEfGroup->wait(static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS_ALL), &efState);
-        if (!(efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS_ALL))
-                || (efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_QUIT))) {
-            continue;  // Nothing to do or time to quit.
-        }
-        Result retval = Result::OK;
-        if (efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS_REVERSE)
-                && !mHasProcessReverse) {
-            retval = Result::NOT_SUPPORTED;
-        }
-
-        if (retval == Result::OK) {
-            // affects both buffer pointers and their contents.
-            std::atomic_thread_fence(std::memory_order_acquire);
-            int32_t processResult;
-            audio_buffer_t* inBuffer =
-                    std::atomic_load_explicit(mInBuffer, std::memory_order_relaxed);
-            audio_buffer_t* outBuffer =
-                    std::atomic_load_explicit(mOutBuffer, std::memory_order_relaxed);
-            if (inBuffer != nullptr && outBuffer != nullptr) {
-                if (efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS)) {
-                    processResult = (*mEffect)->process(mEffect, inBuffer, outBuffer);
-                } else {
-                    processResult = (*mEffect)->process_reverse(mEffect, inBuffer, outBuffer);
-                }
-                std::atomic_thread_fence(std::memory_order_release);
-            } else {
-                ALOGE("processing buffers were not set before calling 'process'");
-                processResult = -ENODEV;
-            }
-            switch(processResult) {
-                case 0: retval = Result::OK; break;
-                case -ENODATA: retval = Result::INVALID_STATE; break;
-                case -EINVAL: retval = Result::INVALID_ARGUMENTS; break;
-                default: retval = Result::NOT_INITIALIZED;
-            }
-        }
-        if (!mStatusMQ->write(&retval)) {
-            ALOGW("status message queue write failed");
-        }
-        mEfGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::DONE_PROCESSING));
-    }
-
-    return false;
-}
-
-}  // namespace
-
-// static
-const char *Effect::sContextResultOfCommand = "returned status";
-const char *Effect::sContextCallToCommand = "error";
-const char *Effect::sContextCallFunction = sContextCallToCommand;
-
-Effect::Effect(effect_handle_t handle)
-        : mIsClosed(false), mHandle(handle), mEfGroup(nullptr), mStopProcessThread(false) {
-}
-
-Effect::~Effect() {
-    ATRACE_CALL();
-    close();
-    if (mProcessThread.get()) {
-        ATRACE_NAME("mProcessThread->join");
-        status_t status = mProcessThread->join();
-        ALOGE_IF(status, "processing thread exit error: %s", strerror(-status));
-    }
-    if (mEfGroup) {
-        status_t status = EventFlag::deleteEventFlag(&mEfGroup);
-        ALOGE_IF(status, "processing MQ event flag deletion error: %s", strerror(-status));
-    }
-    mInBuffer.clear();
-    mOutBuffer.clear();
-    int status = EffectRelease(mHandle);
-    ALOGW_IF(status, "Error releasing effect %p: %s", mHandle, strerror(-status));
-    EffectMap::getInstance().remove(mHandle);
-    mHandle = 0;
-}
-
-// static
-template<typename T> size_t Effect::alignedSizeIn(size_t s) {
-    return (s + sizeof(T) - 1) / sizeof(T);
-}
-
-// static
-template<typename T> std::unique_ptr<uint8_t[]> Effect::hidlVecToHal(
-        const hidl_vec<T>& vec, uint32_t* halDataSize) {
-    // Due to bugs in HAL, they may attempt to write into the provided
-    // input buffer. The original binder buffer is r/o, thus it is needed
-    // to create a r/w version.
-    *halDataSize = vec.size() * sizeof(T);
-    std::unique_ptr<uint8_t[]> halData(new uint8_t[*halDataSize]);
-    memcpy(&halData[0], &vec[0], *halDataSize);
-    return halData;
-}
-
-// static
-void Effect::effectAuxChannelsConfigFromHal(
-        const channel_config_t& halConfig, EffectAuxChannelsConfig* config) {
-    config->mainChannels = AudioChannelMask(halConfig.main_channels);
-    config->auxChannels = AudioChannelMask(halConfig.aux_channels);
-}
-
-// static
-void Effect::effectAuxChannelsConfigToHal(
-        const EffectAuxChannelsConfig& config, channel_config_t* halConfig) {
-    halConfig->main_channels = static_cast<audio_channel_mask_t>(config.mainChannels);
-    halConfig->aux_channels = static_cast<audio_channel_mask_t>(config.auxChannels);
-}
-
-// static
-void Effect::effectBufferConfigFromHal(
-        const buffer_config_t& halConfig, EffectBufferConfig* config) {
-    config->buffer.id = 0;
-    config->buffer.frameCount = 0;
-    config->samplingRateHz = halConfig.samplingRate;
-    config->channels = AudioChannelMask(halConfig.channels);
-    config->format = AudioFormat(halConfig.format);
-    config->accessMode = EffectBufferAccess(halConfig.accessMode);
-    config->mask = EffectConfigParameters(halConfig.mask);
-}
-
-// static
-void Effect::effectBufferConfigToHal(const EffectBufferConfig& config, buffer_config_t* halConfig) {
-    // Note: setting the buffers directly is considered obsolete. They need to be set
-    // using 'setProcessBuffers'.
-    halConfig->buffer.frameCount = 0;
-    halConfig->buffer.raw = NULL;
-    halConfig->samplingRate = config.samplingRateHz;
-    halConfig->channels = static_cast<uint32_t>(config.channels);
-    // Note: The framework code does not use BP.
-    halConfig->bufferProvider.cookie = NULL;
-    halConfig->bufferProvider.getBuffer = NULL;
-    halConfig->bufferProvider.releaseBuffer = NULL;
-    halConfig->format = static_cast<uint8_t>(config.format);
-    halConfig->accessMode = static_cast<uint8_t>(config.accessMode);
-    halConfig->mask = static_cast<uint8_t>(config.mask);
-}
-
-// static
-void Effect::effectConfigFromHal(const effect_config_t& halConfig, EffectConfig* config) {
-    effectBufferConfigFromHal(halConfig.inputCfg, &config->inputCfg);
-    effectBufferConfigFromHal(halConfig.outputCfg, &config->outputCfg);
-}
-
-// static
-void Effect::effectConfigToHal(const EffectConfig& config, effect_config_t* halConfig) {
-    effectBufferConfigToHal(config.inputCfg, &halConfig->inputCfg);
-    effectBufferConfigToHal(config.outputCfg, &halConfig->outputCfg);
-}
-
-// static
-void Effect::effectOffloadParamToHal(
-        const EffectOffloadParameter& offload, effect_offload_param_t* halOffload) {
-    halOffload->isOffload = offload.isOffload;
-    halOffload->ioHandle = offload.ioHandle;
-}
-
-// static
-std::vector<uint8_t> Effect::parameterToHal(
-        uint32_t paramSize,
-        const void* paramData,
-        uint32_t valueSize,
-        const void** valueData) {
-    size_t valueOffsetFromData = alignedSizeIn<uint32_t>(paramSize) * sizeof(uint32_t);
-    size_t halParamBufferSize = sizeof(effect_param_t) + valueOffsetFromData + valueSize;
-    std::vector<uint8_t> halParamBuffer(halParamBufferSize, 0);
-    effect_param_t *halParam = reinterpret_cast<effect_param_t*>(&halParamBuffer[0]);
-    halParam->psize = paramSize;
-    halParam->vsize = valueSize;
-    memcpy(halParam->data, paramData, paramSize);
-    if (valueData) {
-        if (*valueData) {
-            // Value data is provided.
-            memcpy(halParam->data + valueOffsetFromData, *valueData, valueSize);
-        } else {
-            // The caller needs the pointer to the value data location.
-            *valueData = halParam->data + valueOffsetFromData;
-        }
-    }
-    return halParamBuffer;
-}
-
-Result Effect::analyzeCommandStatus(const char* commandName, const char* context, status_t status) {
-    return analyzeStatus("command", commandName, context, status);
-}
-
-Result Effect::analyzeStatus(
-        const char* funcName,
-        const char* subFuncName,
-        const char* contextDescription,
-        status_t status) {
-    if (status != OK) {
-        ALOGW("Effect %p %s %s %s: %s",
-                mHandle, funcName, subFuncName, contextDescription, strerror(-status));
-    }
-    switch (status) {
-        case OK: return Result::OK;
-        case -EINVAL: return Result::INVALID_ARGUMENTS;
-        case -ENODATA: return Result::INVALID_STATE;
-        case -ENODEV: return Result::NOT_INITIALIZED;
-        case -ENOMEM: return Result::RESULT_TOO_BIG;
-        case -ENOSYS: return Result::NOT_SUPPORTED;
-        default: return Result::INVALID_STATE;
-    }
-}
-
-void Effect::getConfigImpl(int commandCode, const char* commandName, GetConfigCallback cb) {
-    uint32_t halResultSize = sizeof(effect_config_t);
-    effect_config_t halConfig{};
-    status_t status = (*mHandle)->command(
-            mHandle, commandCode, 0, NULL, &halResultSize, &halConfig);
-    EffectConfig config;
-    if (status == OK) {
-        effectConfigFromHal(halConfig, &config);
-    }
-    cb(analyzeCommandStatus(commandName, sContextCallToCommand, status), config);
-}
-
-Result Effect::getCurrentConfigImpl(
-        uint32_t featureId, uint32_t configSize, GetCurrentConfigSuccessCallback onSuccess) {
-    uint32_t halCmd = featureId;
-    uint32_t halResult[alignedSizeIn<uint32_t>(sizeof(uint32_t) + configSize)];
-    memset(halResult, 0, sizeof(halResult));
-    uint32_t halResultSize = 0;
-    return sendCommandReturningStatusAndData(
-            EFFECT_CMD_GET_FEATURE_CONFIG, "GET_FEATURE_CONFIG",
-            sizeof(uint32_t), &halCmd,
-            &halResultSize, halResult,
-            sizeof(uint32_t),
-            [&]{ onSuccess(&halResult[1]); });
-}
-
-Result Effect::getParameterImpl(
-        uint32_t paramSize,
-        const void* paramData,
-        uint32_t requestValueSize,
-        uint32_t replyValueSize,
-        GetParameterSuccessCallback onSuccess) {
-    // As it is unknown what method HAL uses for copying the provided parameter data,
-    // it is safer to make sure that input and output buffers do not overlap.
-    std::vector<uint8_t> halCmdBuffer =
-            parameterToHal(paramSize, paramData, requestValueSize, nullptr);
-    const void *valueData = nullptr;
-    std::vector<uint8_t> halParamBuffer =
-            parameterToHal(paramSize, paramData, replyValueSize, &valueData);
-    uint32_t halParamBufferSize = halParamBuffer.size();
-
-    return sendCommandReturningStatusAndData(
-            EFFECT_CMD_GET_PARAM, "GET_PARAM",
-            halCmdBuffer.size(), &halCmdBuffer[0],
-            &halParamBufferSize, &halParamBuffer[0],
-            sizeof(effect_param_t),
-            [&]{
-                effect_param_t *halParam = reinterpret_cast<effect_param_t*>(&halParamBuffer[0]);
-                onSuccess(halParam->vsize, valueData);
-            });
-}
-
-Result Effect::getSupportedConfigsImpl(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        GetSupportedConfigsSuccessCallback onSuccess) {
-    uint32_t halCmd[2] = { featureId, maxConfigs };
-    uint32_t halResultSize = 2 * sizeof(uint32_t) + maxConfigs * sizeof(configSize);
-    uint8_t halResult[halResultSize];
-    memset(&halResult[0], 0, halResultSize);
-    return sendCommandReturningStatusAndData(
-            EFFECT_CMD_GET_FEATURE_SUPPORTED_CONFIGS, "GET_FEATURE_SUPPORTED_CONFIGS",
-            sizeof(halCmd), halCmd,
-            &halResultSize, &halResult[0],
-            2 * sizeof(uint32_t),
-            [&]{
-                uint32_t *halResult32 = reinterpret_cast<uint32_t*>(&halResult[0]);
-                uint32_t supportedConfigs = *(++halResult32); // skip status field
-                if (supportedConfigs > maxConfigs) supportedConfigs = maxConfigs;
-                onSuccess(supportedConfigs, ++halResult32);
-            });
-}
-
-Return<void> Effect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
-    status_t status;
-    // Create message queue.
-    if (mStatusMQ) {
-        ALOGE("the client attempts to call prepareForProcessing_cb twice");
-        _hidl_cb(Result::INVALID_STATE, StatusMQ::Descriptor());
-        return Void();
-    }
-    std::unique_ptr<StatusMQ> tempStatusMQ(new StatusMQ(1, true /*EventFlag*/));
-    if (!tempStatusMQ->isValid()) {
-        ALOGE_IF(!tempStatusMQ->isValid(), "status MQ is invalid");
-        _hidl_cb(Result::INVALID_ARGUMENTS, StatusMQ::Descriptor());
-        return Void();
-    }
-    status = EventFlag::createEventFlag(tempStatusMQ->getEventFlagWord(), &mEfGroup);
-    if (status != OK || !mEfGroup) {
-        ALOGE("failed creating event flag for status MQ: %s", strerror(-status));
-        _hidl_cb(Result::INVALID_ARGUMENTS, StatusMQ::Descriptor());
-        return Void();
-    }
-
-    // Create and launch the thread.
-    mProcessThread = new ProcessThread(
-            &mStopProcessThread,
-            mHandle,
-            &mHalInBufferPtr,
-            &mHalOutBufferPtr,
-            tempStatusMQ.get(),
-            mEfGroup);
-    status = mProcessThread->run("effect", PRIORITY_URGENT_AUDIO);
-    if (status != OK) {
-        ALOGW("failed to start effect processing thread: %s", strerror(-status));
-        _hidl_cb(Result::INVALID_ARGUMENTS, MQDescriptorSync<Result>());
-        return Void();
-    }
-
-    mStatusMQ = std::move(tempStatusMQ);
-    _hidl_cb(Result::OK, *mStatusMQ->getDesc());
-    return Void();
-}
-
-Return<Result> Effect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    AudioBufferManager& manager = AudioBufferManager::getInstance();
-    sp<AudioBufferWrapper> tempInBuffer, tempOutBuffer;
-    if (!manager.wrap(inBuffer, &tempInBuffer)) {
-        ALOGE("Could not map memory of the input buffer");
-        return Result::INVALID_ARGUMENTS;
-    }
-    if (!manager.wrap(outBuffer, &tempOutBuffer)) {
-        ALOGE("Could not map memory of the output buffer");
-        return Result::INVALID_ARGUMENTS;
-    }
-    mInBuffer = tempInBuffer;
-    mOutBuffer = tempOutBuffer;
-    // The processing thread only reads these pointers after waking up by an event flag,
-    // so it's OK to update the pair non-atomically.
-    mHalInBufferPtr.store(mInBuffer->getHalBuffer(), std::memory_order_release);
-    mHalOutBufferPtr.store(mOutBuffer->getHalBuffer(), std::memory_order_release);
-    return Result::OK;
-}
-
-Result Effect::sendCommand(int commandCode, const char* commandName) {
-    return sendCommand(commandCode, commandName, 0, NULL);
-}
-
-Result Effect::sendCommand(
-        int commandCode, const char* commandName, uint32_t size, void* data) {
-    status_t status = (*mHandle)->command(mHandle, commandCode, size, data, 0, NULL);
-    return analyzeCommandStatus(commandName, sContextCallToCommand, status);
-}
-
-Result Effect::sendCommandReturningData(
-        int commandCode, const char* commandName,
-        uint32_t* replySize, void* replyData) {
-    return sendCommandReturningData(commandCode, commandName, 0, NULL, replySize, replyData);
-}
-
-Result Effect::sendCommandReturningData(
-        int commandCode, const char* commandName,
-        uint32_t size, void* data,
-        uint32_t* replySize, void* replyData) {
-    uint32_t expectedReplySize = *replySize;
-    status_t status = (*mHandle)->command(mHandle, commandCode, size, data, replySize, replyData);
-    if (status == OK && *replySize != expectedReplySize) {
-        status = -ENODATA;
-    }
-    return analyzeCommandStatus(commandName, sContextCallToCommand, status);
-}
-
-Result Effect::sendCommandReturningStatus(int commandCode, const char* commandName) {
-    return sendCommandReturningStatus(commandCode, commandName, 0, NULL);
-}
-
-Result Effect::sendCommandReturningStatus(
-        int commandCode, const char* commandName, uint32_t size, void* data) {
-    uint32_t replyCmdStatus;
-    uint32_t replySize = sizeof(uint32_t);
-    return sendCommandReturningStatusAndData(
-            commandCode, commandName, size, data, &replySize, &replyCmdStatus, replySize, []{});
-}
-
-Result Effect::sendCommandReturningStatusAndData(
-        int commandCode, const char* commandName,
-        uint32_t size, void* data,
-        uint32_t* replySize, void* replyData,
-        uint32_t minReplySize,
-        CommandSuccessCallback onSuccess) {
-    status_t status =
-            (*mHandle)->command(mHandle, commandCode, size, data, replySize, replyData);
-    Result retval;
-    if (status == OK && minReplySize >= sizeof(uint32_t) && *replySize >= minReplySize) {
-        uint32_t commandStatus = *reinterpret_cast<uint32_t*>(replyData);
-        retval = analyzeCommandStatus(commandName, sContextResultOfCommand, commandStatus);
-        if (commandStatus == OK) {
-            onSuccess();
-        }
-    } else {
-        retval = analyzeCommandStatus(commandName, sContextCallToCommand, status);
-    }
-    return retval;
-}
-
-Result Effect::setConfigImpl(
-        int commandCode, const char* commandName,
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    effect_config_t halConfig;
-    effectConfigToHal(config, &halConfig);
-    if (inputBufferProvider != 0) {
-        LOG_FATAL("Using input buffer provider is not supported");
-    }
-    if (outputBufferProvider != 0) {
-        LOG_FATAL("Using output buffer provider is not supported");
-    }
-    return sendCommandReturningStatus(
-            commandCode, commandName, sizeof(effect_config_t), &halConfig);
-}
-
-
-Result Effect::setParameterImpl(
-        uint32_t paramSize, const void* paramData, uint32_t valueSize, const void* valueData) {
-    std::vector<uint8_t> halParamBuffer = parameterToHal(
-            paramSize, paramData, valueSize, &valueData);
-    return sendCommandReturningStatus(
-            EFFECT_CMD_SET_PARAM, "SET_PARAM", halParamBuffer.size(), &halParamBuffer[0]);
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> Effect::init()  {
-    return sendCommandReturningStatus(EFFECT_CMD_INIT, "INIT");
-}
-
-Return<Result> Effect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider)  {
-    return setConfigImpl(
-            EFFECT_CMD_SET_CONFIG, "SET_CONFIG", config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> Effect::reset()  {
-    return sendCommand(EFFECT_CMD_RESET, "RESET");
-}
-
-Return<Result> Effect::enable()  {
-    return sendCommandReturningStatus(EFFECT_CMD_ENABLE, "ENABLE");
-}
-
-Return<Result> Effect::disable()  {
-    return sendCommandReturningStatus(EFFECT_CMD_DISABLE, "DISABLE");
-}
-
-Return<Result> Effect::setDevice(AudioDevice device)  {
-    uint32_t halDevice = static_cast<uint32_t>(device);
-    return sendCommand(EFFECT_CMD_SET_DEVICE, "SET_DEVICE", sizeof(uint32_t), &halDevice);
-}
-
-Return<void> Effect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  {
-    uint32_t halDataSize;
-    std::unique_ptr<uint8_t[]> halData = hidlVecToHal(volumes, &halDataSize);
-    uint32_t halResultSize = halDataSize;
-    uint32_t halResult[volumes.size()];
-    Result retval = sendCommandReturningData(
-            EFFECT_CMD_SET_VOLUME, "SET_VOLUME",
-            halDataSize, &halData[0],
-            &halResultSize, halResult);
-    hidl_vec<uint32_t> result;
-    if (retval == Result::OK) {
-        result.setToExternal(&halResult[0], halResultSize);
-    }
-    _hidl_cb(retval, result);
-    return Void();
-}
-
-Return<Result> Effect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  {
-    uint32_t halDataSize;
-    std::unique_ptr<uint8_t[]> halData = hidlVecToHal(volumes, &halDataSize);
-    return sendCommand(
-            EFFECT_CMD_SET_VOLUME, "SET_VOLUME",
-            halDataSize, &halData[0]);
-}
-
-Return<Result> Effect::setAudioMode(AudioMode mode)  {
-    uint32_t halMode = static_cast<uint32_t>(mode);
-    return sendCommand(
-            EFFECT_CMD_SET_AUDIO_MODE, "SET_AUDIO_MODE", sizeof(uint32_t), &halMode);
-}
-
-Return<Result> Effect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider)  {
-    return setConfigImpl(EFFECT_CMD_SET_CONFIG_REVERSE, "SET_CONFIG_REVERSE",
-            config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> Effect::setInputDevice(AudioDevice device)  {
-    uint32_t halDevice = static_cast<uint32_t>(device);
-    return sendCommand(
-            EFFECT_CMD_SET_INPUT_DEVICE, "SET_INPUT_DEVICE", sizeof(uint32_t), &halDevice);
-}
-
-Return<void> Effect::getConfig(getConfig_cb _hidl_cb)  {
-    getConfigImpl(EFFECT_CMD_GET_CONFIG, "GET_CONFIG", _hidl_cb);
-    return Void();
-}
-
-Return<void> Effect::getConfigReverse(getConfigReverse_cb _hidl_cb)  {
-    getConfigImpl(EFFECT_CMD_GET_CONFIG_REVERSE, "GET_CONFIG_REVERSE", _hidl_cb);
-    return Void();
-}
-
-Return<void> Effect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  {
-    hidl_vec<EffectAuxChannelsConfig> result;
-    Result retval = getSupportedConfigsImpl(
-            EFFECT_FEATURE_AUX_CHANNELS,
-            maxConfigs,
-            sizeof(channel_config_t),
-            [&] (uint32_t supportedConfigs, void* configsData) {
-                result.resize(supportedConfigs);
-                channel_config_t *config = reinterpret_cast<channel_config_t*>(configsData);
-                for (size_t i = 0; i < result.size(); ++i) {
-                    effectAuxChannelsConfigFromHal(*config++, &result[i]);
-                }
-            });
-    _hidl_cb(retval, result);
-    return Void();
-}
-
-Return<void> Effect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  {
-    uint32_t halResult[alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t))];
-    memset(halResult, 0, sizeof(halResult));
-    EffectAuxChannelsConfig result;
-    Result retval = getCurrentConfigImpl(
-            EFFECT_FEATURE_AUX_CHANNELS,
-            sizeof(channel_config_t),
-            [&] (void* configData) {
-                effectAuxChannelsConfigFromHal(
-                        *reinterpret_cast<channel_config_t*>(configData), &result);
-            });
-    _hidl_cb(retval, result);
-    return Void();
-}
-
-Return<Result> Effect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  {
-    uint32_t halCmd[alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t))];
-    halCmd[0] = EFFECT_FEATURE_AUX_CHANNELS;
-    effectAuxChannelsConfigToHal(config, reinterpret_cast<channel_config_t*>(&halCmd[1]));
-    return sendCommandReturningStatus(EFFECT_CMD_SET_FEATURE_CONFIG,
-            "SET_FEATURE_CONFIG AUX_CHANNELS", sizeof(halCmd), halCmd);
-}
-
-Return<Result> Effect::setAudioSource(AudioSource source)  {
-    uint32_t halSource = static_cast<uint32_t>(source);
-    return sendCommand(
-            EFFECT_CMD_SET_AUDIO_SOURCE, "SET_AUDIO_SOURCE", sizeof(uint32_t), &halSource);
-}
-
-Return<Result> Effect::offload(const EffectOffloadParameter& param)  {
-    effect_offload_param_t halParam;
-    effectOffloadParamToHal(param, &halParam);
-    return sendCommandReturningStatus(
-            EFFECT_CMD_OFFLOAD, "OFFLOAD", sizeof(effect_offload_param_t), &halParam);
-}
-
-Return<void> Effect::getDescriptor(getDescriptor_cb _hidl_cb)  {
-    effect_descriptor_t halDescriptor;
-    memset(&halDescriptor, 0, sizeof(effect_descriptor_t));
-    status_t status = (*mHandle)->get_descriptor(mHandle, &halDescriptor);
-    EffectDescriptor descriptor;
-    if (status == OK) {
-        effectDescriptorFromHal(halDescriptor, &descriptor);
-    }
-    _hidl_cb(analyzeStatus("get_descriptor", "", sContextCallFunction, status), descriptor);
-    return Void();
-}
-
-Return<void> Effect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb)  {
-    uint32_t halDataSize;
-    std::unique_ptr<uint8_t[]> halData = hidlVecToHal(data, &halDataSize);
-    uint32_t halResultSize = resultMaxSize;
-    std::unique_ptr<uint8_t[]> halResult(new uint8_t[halResultSize]);
-    memset(&halResult[0], 0, halResultSize);
-
-    void* dataPtr = halDataSize > 0 ? &halData[0] : NULL;
-    void* resultPtr = halResultSize > 0 ? &halResult[0] : NULL;
-    status_t status = (*mHandle)->command(
-            mHandle, commandId, halDataSize, dataPtr, &halResultSize, resultPtr);
-    hidl_vec<uint8_t> result;
-    if (status == OK && resultPtr != NULL) {
-        result.setToExternal(&halResult[0], halResultSize);
-    }
-    _hidl_cb(status, result);
-    return Void();
-}
-
-Return<Result> Effect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  {
-    return setParameterImpl(parameter.size(), &parameter[0], value.size(), &value[0]);
-}
-
-Return<void> Effect::getParameter(
-        const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize, getParameter_cb _hidl_cb)  {
-    hidl_vec<uint8_t> value;
-    Result retval = getParameterImpl(
-            parameter.size(),
-            &parameter[0],
-            valueMaxSize,
-            [&] (uint32_t valueSize, const void* valueData) {
-                value.setToExternal(
-                        reinterpret_cast<uint8_t*>(const_cast<void*>(valueData)), valueSize);
-            });
-    _hidl_cb(retval, value);
-    return Void();
-}
-
-Return<void> Effect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb)  {
-    uint32_t configCount = 0;
-    hidl_vec<uint8_t> result;
-    Result retval = getSupportedConfigsImpl(
-            featureId,
-            maxConfigs,
-            configSize,
-            [&] (uint32_t supportedConfigs, void* configsData) {
-                configCount = supportedConfigs;
-                result.resize(configCount * configSize);
-                memcpy(&result[0], configsData, result.size());
-            });
-    _hidl_cb(retval, configCount, result);
-    return Void();
-}
-
-Return<void> Effect::getCurrentConfigForFeature(
-        uint32_t featureId, uint32_t configSize, getCurrentConfigForFeature_cb _hidl_cb)  {
-    hidl_vec<uint8_t> result;
-    Result retval = getCurrentConfigImpl(
-            featureId,
-            configSize,
-            [&] (void* configData) {
-                result.resize(configSize);
-                memcpy(&result[0], configData, result.size());
-            });
-    _hidl_cb(retval, result);
-    return Void();
-}
-
-Return<Result> Effect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData)  {
-    uint32_t halCmd[alignedSizeIn<uint32_t>(sizeof(uint32_t) + configData.size())];
-    memset(halCmd, 0, sizeof(halCmd));
-    halCmd[0] = featureId;
-    memcpy(&halCmd[1], &configData[0], configData.size());
-    return sendCommandReturningStatus(
-            EFFECT_CMD_SET_FEATURE_CONFIG, "SET_FEATURE_CONFIG", sizeof(halCmd), halCmd);
-}
-
-Return<Result> Effect::close() {
-    if (mIsClosed) return Result::INVALID_STATE;
-    mIsClosed = true;
-    if (mProcessThread.get()) {
-        mStopProcessThread.store(true, std::memory_order_release);
-    }
-    if (mEfGroup) {
-        mEfGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_QUIT));
-    }
-    return Result::OK;
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/Effect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/Effect.h b/audio/effect/2.0/default/Effect.h
index 0918cd8..a4d194d 100644
--- a/audio/effect/2.0/default/Effect.h
+++ b/audio/effect/2.0/default/Effect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -17,259 +17,12 @@
 #ifndef ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_EFFECT_H
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_EFFECT_H
 
-#include <atomic>
-#include <memory>
-#include <vector>
-
 #include <android/hardware/audio/effect/2.0/IEffect.h>
-#include <fmq/EventFlag.h>
-#include <fmq/MessageQueue.h>
-#include <hidl/MQDescriptor.h>
-#include <hidl/Status.h>
-#include <utils/Thread.h>
-
-#include <hardware/audio_effect.h>
 
 #include "AudioBufferManager.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::common::V2_0::Uuid;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectFeature;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct Effect : public IEffect {
-    typedef MessageQueue<Result, kSynchronizedReadWrite> StatusMQ;
-    using GetParameterSuccessCallback =
-            std::function<void(uint32_t valueSize, const void* valueData)>;
-
-    explicit Effect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Utility methods for extending interfaces.
-    template<typename T> Return<void> getIntegerParam(
-            uint32_t paramId, std::function<void(Result retval, T paramValue)> cb) {
-        T value;
-        Result retval = getParameterImpl(
-                sizeof(uint32_t), &paramId,
-                sizeof(T),
-                [&] (uint32_t valueSize, const void* valueData) {
-                    if (valueSize > sizeof(T)) valueSize = sizeof(T);
-                    memcpy(&value, valueData, valueSize);
-                });
-        cb(retval, value);
-        return Void();
-    }
-
-    template<typename T> Result getParam(uint32_t paramId, T& paramValue) {
-        return getParameterImpl(
-                sizeof(uint32_t), &paramId,
-                sizeof(T),
-                [&] (uint32_t valueSize, const void* valueData) {
-                    if (valueSize > sizeof(T)) valueSize = sizeof(T);
-                    memcpy(&paramValue, valueData, valueSize);
-                });
-    }
-
-    template<typename T> Result getParam(uint32_t paramId, uint32_t paramArg, T& paramValue) {
-        uint32_t params[2] = { paramId, paramArg };
-        return getParameterImpl(
-                sizeof(params), params,
-                sizeof(T),
-                [&] (uint32_t valueSize, const void* valueData) {
-                    if (valueSize > sizeof(T)) valueSize = sizeof(T);
-                    memcpy(&paramValue, valueData, valueSize);
-                });
-    }
-
-    template<typename T> Result setParam(uint32_t paramId, const T& paramValue) {
-        return setParameterImpl(sizeof(uint32_t), &paramId, sizeof(T), &paramValue);
-    }
-
-    template<typename T> Result setParam(uint32_t paramId, uint32_t paramArg, const T& paramValue) {
-        uint32_t params[2] = { paramId, paramArg };
-        return setParameterImpl(sizeof(params), params, sizeof(T), &paramValue);
-    }
-
-    Result getParameterImpl(
-            uint32_t paramSize,
-            const void* paramData,
-            uint32_t valueSize,
-            GetParameterSuccessCallback onSuccess) {
-        return getParameterImpl(paramSize, paramData, valueSize, valueSize, onSuccess);
-    }
-    Result getParameterImpl(
-            uint32_t paramSize,
-            const void* paramData,
-            uint32_t requestValueSize,
-            uint32_t replyValueSize,
-            GetParameterSuccessCallback onSuccess);
-    Result setParameterImpl(
-            uint32_t paramSize, const void* paramData, uint32_t valueSize, const void* valueData);
-
-  private:
-    friend struct VirtualizerEffect;  // for getParameterImpl
-    friend struct VisualizerEffect;   // to allow executing commands
-
-    using CommandSuccessCallback = std::function<void()>;
-    using GetConfigCallback = std::function<void(Result retval, const EffectConfig& config)>;
-    using GetCurrentConfigSuccessCallback = std::function<void(void* configData)>;
-    using GetSupportedConfigsSuccessCallback =
-            std::function<void(uint32_t supportedConfigs, void* configsData)>;
-
-    static const char *sContextResultOfCommand;
-    static const char *sContextCallToCommand;
-    static const char *sContextCallFunction;
-
-    bool mIsClosed;
-    effect_handle_t mHandle;
-    sp<AudioBufferWrapper> mInBuffer;
-    sp<AudioBufferWrapper> mOutBuffer;
-    std::atomic<audio_buffer_t*> mHalInBufferPtr;
-    std::atomic<audio_buffer_t*> mHalOutBufferPtr;
-    std::unique_ptr<StatusMQ> mStatusMQ;
-    EventFlag* mEfGroup;
-    std::atomic<bool> mStopProcessThread;
-    sp<Thread> mProcessThread;
-
-    virtual ~Effect();
-
-    template<typename T> static size_t alignedSizeIn(size_t s);
-    template<typename T> std::unique_ptr<uint8_t[]> hidlVecToHal(
-            const hidl_vec<T>& vec, uint32_t* halDataSize);
-    static void effectAuxChannelsConfigFromHal(
-            const channel_config_t& halConfig, EffectAuxChannelsConfig* config);
-    static void effectAuxChannelsConfigToHal(
-            const EffectAuxChannelsConfig& config, channel_config_t* halConfig);
-    static void effectBufferConfigFromHal(
-            const buffer_config_t& halConfig, EffectBufferConfig* config);
-    static void effectBufferConfigToHal(
-            const EffectBufferConfig& config, buffer_config_t* halConfig);
-    static void effectConfigFromHal(const effect_config_t& halConfig, EffectConfig* config);
-    static void effectConfigToHal(const EffectConfig& config, effect_config_t* halConfig);
-    static void effectOffloadParamToHal(
-            const EffectOffloadParameter& offload, effect_offload_param_t* halOffload);
-    static std::vector<uint8_t> parameterToHal(
-            uint32_t paramSize, const void* paramData, uint32_t valueSize, const void** valueData);
-
-    Result analyzeCommandStatus(
-            const char* commandName, const char* context, status_t status);
-    Result analyzeStatus(
-            const char* funcName,
-            const char* subFuncName,
-            const char* contextDescription,
-            status_t status);
-    void getConfigImpl(int commandCode, const char* commandName, GetConfigCallback cb);
-    Result getCurrentConfigImpl(
-            uint32_t featureId, uint32_t configSize, GetCurrentConfigSuccessCallback onSuccess);
-    Result getSupportedConfigsImpl(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            GetSupportedConfigsSuccessCallback onSuccess);
-    Result sendCommand(int commandCode, const char* commandName);
-    Result sendCommand(int commandCode, const char* commandName, uint32_t size, void* data);
-    Result sendCommandReturningData(
-            int commandCode, const char* commandName, uint32_t* replySize, void* replyData);
-    Result sendCommandReturningData(
-            int commandCode, const char* commandName,
-            uint32_t size, void* data,
-            uint32_t* replySize, void* replyData);
-    Result sendCommandReturningStatus(int commandCode, const char* commandName);
-    Result sendCommandReturningStatus(
-            int commandCode, const char* commandName, uint32_t size, void* data);
-    Result sendCommandReturningStatusAndData(
-            int commandCode, const char* commandName,
-            uint32_t size, void* data,
-            uint32_t* replySize, void* replyData,
-            uint32_t minReplySize,
-            CommandSuccessCallback onSuccess);
-    Result setConfigImpl(
-            int commandCode, const char* commandName,
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider);
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/Effect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_EFFECT_H
diff --git a/audio/effect/2.0/default/EffectsFactory.cpp b/audio/effect/2.0/default/EffectsFactory.cpp
index 922a922..a48a85f 100644
--- a/audio/effect/2.0/default/EffectsFactory.cpp
+++ b/audio/effect/2.0/default/EffectsFactory.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,191 +15,25 @@
  */
 
 #define LOG_TAG "EffectFactoryHAL"
-#include <media/EffectsFactoryApi.h>
-#include <system/audio_effects/effect_aec.h>
-#include <system/audio_effects/effect_agc.h>
-#include <system/audio_effects/effect_bassboost.h>
-#include <system/audio_effects/effect_downmix.h>
-#include <system/audio_effects/effect_environmentalreverb.h>
-#include <system/audio_effects/effect_equalizer.h>
-#include <system/audio_effects/effect_loudnessenhancer.h>
-#include <system/audio_effects/effect_ns.h>
-#include <system/audio_effects/effect_presetreverb.h>
-#include <system/audio_effects/effect_virtualizer.h>
-#include <system/audio_effects/effect_visualizer.h>
-#include <android/log.h>
-
+#include "EffectsFactory.h"
 #include "AcousticEchoCancelerEffect.h"
 #include "AutomaticGainControlEffect.h"
 #include "BassBoostEffect.h"
 #include "Conversions.h"
 #include "DownmixEffect.h"
-#include "EffectsFactory.h"
-#include "HidlUtils.h"
 #include "Effect.h"
-#include "EffectMap.h"
 #include "EnvironmentalReverbEffect.h"
 #include "EqualizerEffect.h"
+#include "HidlUtils.h"
 #include "LoudnessEnhancerEffect.h"
 #include "NoiseSuppressionEffect.h"
 #include "PresetReverbEffect.h"
 #include "VirtualizerEffect.h"
 #include "VisualizerEffect.h"
+#include "common/all-versions/default/EffectMap.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
+using ::android::hardware::audio::common::V2_0::HidlUtils;
 
-// static
-sp<IEffect> EffectsFactory::dispatchEffectInstanceCreation(
-        const effect_descriptor_t& halDescriptor, effect_handle_t handle) {
-    const effect_uuid_t *halUuid = &halDescriptor.type;
-    if (memcmp(halUuid, FX_IID_AEC, sizeof(effect_uuid_t)) == 0) {
-        return new AcousticEchoCancelerEffect(handle);
-    } else if (memcmp(halUuid, FX_IID_AGC, sizeof(effect_uuid_t)) == 0) {
-        return new AutomaticGainControlEffect(handle);
-    } else if (memcmp(halUuid, SL_IID_BASSBOOST, sizeof(effect_uuid_t)) == 0) {
-        return new BassBoostEffect(handle);
-    } else if (memcmp(halUuid, EFFECT_UIID_DOWNMIX, sizeof(effect_uuid_t)) == 0) {
-        return new DownmixEffect(handle);
-    } else if (memcmp(halUuid, SL_IID_ENVIRONMENTALREVERB, sizeof(effect_uuid_t)) == 0) {
-        return new EnvironmentalReverbEffect(handle);
-    } else if (memcmp(halUuid, SL_IID_EQUALIZER, sizeof(effect_uuid_t)) == 0) {
-        return new EqualizerEffect(handle);
-    } else if (memcmp(halUuid, FX_IID_LOUDNESS_ENHANCER, sizeof(effect_uuid_t)) == 0) {
-        return new LoudnessEnhancerEffect(handle);
-    } else if (memcmp(halUuid, FX_IID_NS, sizeof(effect_uuid_t)) == 0) {
-        return new NoiseSuppressionEffect(handle);
-    } else if (memcmp(halUuid, SL_IID_PRESETREVERB, sizeof(effect_uuid_t)) == 0) {
-        return new PresetReverbEffect(handle);
-    } else if (memcmp(halUuid, SL_IID_VIRTUALIZER, sizeof(effect_uuid_t)) == 0) {
-        return new VirtualizerEffect(handle);
-    } else if (memcmp(halUuid, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) {
-        return new VisualizerEffect(handle);
-    }
-    return new Effect(handle);
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffectsFactory follow.
-Return<void> EffectsFactory::getAllDescriptors(getAllDescriptors_cb _hidl_cb)  {
-    Result retval(Result::OK);
-    hidl_vec<EffectDescriptor> result;
-    uint32_t numEffects;
-    status_t status;
-
-restart:
-    numEffects = 0;
-    status = EffectQueryNumberEffects(&numEffects);
-    if (status != OK) {
-        retval = Result::NOT_INITIALIZED;
-        ALOGE("Error querying number of effects: %s", strerror(-status));
-        goto exit;
-    }
-    result.resize(numEffects);
-    for (uint32_t i = 0; i < numEffects; ++i) {
-        effect_descriptor_t halDescriptor;
-        status = EffectQueryEffect(i, &halDescriptor);
-        if (status == OK) {
-            effectDescriptorFromHal(halDescriptor, &result[i]);
-        } else {
-            ALOGE("Error querying effect at position %d / %d: %s",
-                    i, numEffects, strerror(-status));
-            switch (status) {
-                case -ENOSYS: {
-                    // Effect list has changed.
-                    goto restart;
-                }
-                case -ENOENT: {
-                    // No more effects available.
-                    result.resize(i);
-                }
-                default: {
-                    result.resize(0);
-                    retval = Result::NOT_INITIALIZED;
-                }
-            }
-            break;
-        }
-    }
-
-exit:
-    _hidl_cb(retval, result);
-    return Void();
-}
-
-Return<void> EffectsFactory::getDescriptor(const Uuid& uid, getDescriptor_cb _hidl_cb)  {
-    effect_uuid_t halUuid;
-    HidlUtils::uuidToHal(uid, &halUuid);
-    effect_descriptor_t halDescriptor;
-    status_t status = EffectGetDescriptor(&halUuid, &halDescriptor);
-    EffectDescriptor descriptor;
-    effectDescriptorFromHal(halDescriptor, &descriptor);
-    Result retval(Result::OK);
-    if (status != OK) {
-        ALOGE("Error querying effect descriptor for %s: %s",
-                uuidToString(halUuid).c_str(), strerror(-status));
-        if (status == -ENOENT) {
-            retval = Result::INVALID_ARGUMENTS;
-        } else {
-            retval = Result::NOT_INITIALIZED;
-        }
-    }
-    _hidl_cb(retval, descriptor);
-    return Void();
-}
-
-Return<void> EffectsFactory::createEffect(
-        const Uuid& uid, int32_t session, int32_t ioHandle, createEffect_cb _hidl_cb)  {
-    effect_uuid_t halUuid;
-    HidlUtils::uuidToHal(uid, &halUuid);
-    effect_handle_t handle;
-    Result retval(Result::OK);
-    status_t status = EffectCreate(&halUuid, session, ioHandle, &handle);
-    sp<IEffect> effect;
-    uint64_t effectId = EffectMap::INVALID_ID;
-    if (status == OK) {
-        effect_descriptor_t halDescriptor;
-        memset(&halDescriptor, 0, sizeof(effect_descriptor_t));
-        status = (*handle)->get_descriptor(handle, &halDescriptor);
-        if (status == OK) {
-            effect = dispatchEffectInstanceCreation(halDescriptor, handle);
-            effectId = EffectMap::getInstance().add(handle);
-        } else {
-            ALOGE("Error querying effect descriptor for %s: %s",
-                    uuidToString(halUuid).c_str(), strerror(-status));
-            EffectRelease(handle);
-        }
-    }
-    if (status != OK) {
-        ALOGE("Error creating effect %s: %s", uuidToString(halUuid).c_str(), strerror(-status));
-        if (status == -ENOENT) {
-            retval = Result::INVALID_ARGUMENTS;
-        } else {
-            retval = Result::NOT_INITIALIZED;
-        }
-    }
-    _hidl_cb(retval, effect, effectId);
-    return Void();
-}
-
-Return<void> EffectsFactory::debugDump(const hidl_handle& fd)  {
-    if (fd.getNativeHandle() != nullptr && fd->numFds == 1) {
-        EffectDumpEffects(fd->data[0]);
-    }
-    return Void();
-}
-
-
-IEffectsFactory* HIDL_FETCH_IEffectsFactory(const char* /* name */) {
-    return new EffectsFactory();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/EffectsFactory.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/EffectsFactory.h b/audio/effect/2.0/default/EffectsFactory.h
index 829a534..f1bfbcf 100644
--- a/audio/effect/2.0/default/EffectsFactory.h
+++ b/audio/effect/2.0/default/EffectsFactory.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -20,47 +20,10 @@
 #include <system/audio_effect.h>
 
 #include <android/hardware/audio/effect/2.0/IEffectsFactory.h>
-#include <hidl/Status.h>
 
 #include <hidl/MQDescriptor.h>
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::Uuid;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectsFactory;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct EffectsFactory : public IEffectsFactory {
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffectsFactory follow.
-    Return<void> getAllDescriptors(getAllDescriptors_cb _hidl_cb)  override;
-    Return<void> getDescriptor(const Uuid& uid, getDescriptor_cb _hidl_cb)  override;
-    Return<void> createEffect(
-            const Uuid& uid, int32_t session, int32_t ioHandle, createEffect_cb _hidl_cb)  override;
-    Return<void> debugDump(const hidl_handle& fd)  override;
-
-  private:
-    static sp<IEffect> dispatchEffectInstanceCreation(
-            const effect_descriptor_t& halDescriptor, effect_handle_t handle);
-};
-
-extern "C" IEffectsFactory* HIDL_FETCH_IEffectsFactory(const char* name);
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/EffectsFactory.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_EFFECTSFACTORY_H
diff --git a/audio/effect/2.0/default/EnvironmentalReverbEffect.cpp b/audio/effect/2.0/default/EnvironmentalReverbEffect.cpp
index 86ff368..017dd1f 100644
--- a/audio/effect/2.0/default/EnvironmentalReverbEffect.cpp
+++ b/audio/effect/2.0/default/EnvironmentalReverbEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -19,298 +19,6 @@
 
 #include "EnvironmentalReverbEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-EnvironmentalReverbEffect::EnvironmentalReverbEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-EnvironmentalReverbEffect::~EnvironmentalReverbEffect() {}
-
-void EnvironmentalReverbEffect::propertiesFromHal(
-        const t_reverb_settings& halProperties,
-        IEnvironmentalReverbEffect::AllProperties* properties) {
-    properties->roomLevel = halProperties.roomLevel;
-    properties->roomHfLevel = halProperties.roomHFLevel;
-    properties->decayTime = halProperties.decayTime;
-    properties->decayHfRatio = halProperties.decayHFRatio;
-    properties->reflectionsLevel = halProperties.reflectionsLevel;
-    properties->reflectionsDelay = halProperties.reflectionsDelay;
-    properties->reverbLevel = halProperties.reverbLevel;
-    properties->reverbDelay = halProperties.reverbDelay;
-    properties->diffusion = halProperties.diffusion;
-    properties->density = halProperties.density;
-}
-
-void EnvironmentalReverbEffect::propertiesToHal(
-        const IEnvironmentalReverbEffect::AllProperties& properties,
-        t_reverb_settings* halProperties) {
-    halProperties->roomLevel = properties.roomLevel;
-    halProperties->roomHFLevel = properties.roomHfLevel;
-    halProperties->decayTime = properties.decayTime;
-    halProperties->decayHFRatio = properties.decayHfRatio;
-    halProperties->reflectionsLevel = properties.reflectionsLevel;
-    halProperties->reflectionsDelay = properties.reflectionsDelay;
-    halProperties->reverbLevel = properties.reverbLevel;
-    halProperties->reverbDelay = properties.reverbDelay;
-    halProperties->diffusion = properties.diffusion;
-    halProperties->density = properties.density;
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> EnvironmentalReverbEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> EnvironmentalReverbEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> EnvironmentalReverbEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> EnvironmentalReverbEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> EnvironmentalReverbEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> EnvironmentalReverbEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> EnvironmentalReverbEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> EnvironmentalReverbEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> EnvironmentalReverbEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> EnvironmentalReverbEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> EnvironmentalReverbEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> EnvironmentalReverbEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> EnvironmentalReverbEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> EnvironmentalReverbEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> EnvironmentalReverbEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> EnvironmentalReverbEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> EnvironmentalReverbEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> EnvironmentalReverbEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> EnvironmentalReverbEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> EnvironmentalReverbEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> EnvironmentalReverbEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> EnvironmentalReverbEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> EnvironmentalReverbEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEnvironmentalReverbEffect follow.
-Return<Result> EnvironmentalReverbEffect::setBypass(bool bypass)  {
-    return mEffect->setParam(REVERB_PARAM_BYPASS, bypass);
-}
-
-Return<void> EnvironmentalReverbEffect::getBypass(getBypass_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_BYPASS, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setRoomLevel(int16_t roomLevel)  {
-    return mEffect->setParam(REVERB_PARAM_ROOM_LEVEL, roomLevel);
-}
-
-Return<void> EnvironmentalReverbEffect::getRoomLevel(getRoomLevel_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_ROOM_LEVEL, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setRoomHfLevel(int16_t roomHfLevel)  {
-    return mEffect->setParam(REVERB_PARAM_ROOM_HF_LEVEL, roomHfLevel);
-}
-
-Return<void> EnvironmentalReverbEffect::getRoomHfLevel(getRoomHfLevel_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_ROOM_HF_LEVEL, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setDecayTime(uint32_t decayTime)  {
-    return mEffect->setParam(REVERB_PARAM_DECAY_TIME, decayTime);
-}
-
-Return<void> EnvironmentalReverbEffect::getDecayTime(getDecayTime_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_DECAY_TIME, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setDecayHfRatio(int16_t decayHfRatio)  {
-    return mEffect->setParam(REVERB_PARAM_DECAY_HF_RATIO, decayHfRatio);
-}
-
-Return<void> EnvironmentalReverbEffect::getDecayHfRatio(getDecayHfRatio_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_DECAY_HF_RATIO, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setReflectionsLevel(int16_t reflectionsLevel)  {
-    return mEffect->setParam(REVERB_PARAM_REFLECTIONS_LEVEL, reflectionsLevel);
-}
-
-Return<void> EnvironmentalReverbEffect::getReflectionsLevel(getReflectionsLevel_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_REFLECTIONS_LEVEL, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setReflectionsDelay(uint32_t reflectionsDelay)  {
-    return mEffect->setParam(REVERB_PARAM_REFLECTIONS_DELAY, reflectionsDelay);
-}
-
-Return<void> EnvironmentalReverbEffect::getReflectionsDelay(getReflectionsDelay_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_REFLECTIONS_DELAY, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setReverbLevel(int16_t reverbLevel)  {
-    return mEffect->setParam(REVERB_PARAM_REVERB_LEVEL, reverbLevel);
-}
-
-Return<void> EnvironmentalReverbEffect::getReverbLevel(getReverbLevel_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_REVERB_LEVEL, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setReverbDelay(uint32_t reverbDelay) {
-    return mEffect->setParam(REVERB_PARAM_REVERB_DELAY, reverbDelay);
-}
-
-Return<void> EnvironmentalReverbEffect::getReverbDelay(getReverbDelay_cb _hidl_cb) {
-    return mEffect->getIntegerParam(REVERB_PARAM_REVERB_DELAY, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setDiffusion(int16_t diffusion)  {
-    return mEffect->setParam(REVERB_PARAM_DIFFUSION, diffusion);
-}
-
-Return<void> EnvironmentalReverbEffect::getDiffusion(getDiffusion_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_DIFFUSION, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setDensity(int16_t density)  {
-    return mEffect->setParam(REVERB_PARAM_DENSITY, density);
-}
-
-Return<void> EnvironmentalReverbEffect::getDensity(getDensity_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(REVERB_PARAM_DENSITY, _hidl_cb);
-}
-
-Return<Result> EnvironmentalReverbEffect::setAllProperties(
-        const IEnvironmentalReverbEffect::AllProperties& properties)  {
-    t_reverb_settings halProperties;
-    propertiesToHal(properties, &halProperties);
-    return mEffect->setParam(REVERB_PARAM_PROPERTIES, halProperties);
-}
-
-Return<void> EnvironmentalReverbEffect::getAllProperties(getAllProperties_cb _hidl_cb)  {
-    t_reverb_settings halProperties;
-    Result retval = mEffect->getParam(REVERB_PARAM_PROPERTIES, halProperties);
-    AllProperties properties;
-    propertiesFromHal(halProperties, &properties);
-    _hidl_cb(retval, properties);
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/EnvironmentalReverbEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/EnvironmentalReverbEffect.h b/audio/effect/2.0/default/EnvironmentalReverbEffect.h
index 794caac..d93a53f 100644
--- a/audio/effect/2.0/default/EnvironmentalReverbEffect.h
+++ b/audio/effect/2.0/default/EnvironmentalReverbEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -20,140 +20,11 @@
 #include <system/audio_effects/effect_environmentalreverb.h>
 
 #include <android/hardware/audio/effect/2.0/IEnvironmentalReverbEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::IEnvironmentalReverbEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct EnvironmentalReverbEffect : public IEnvironmentalReverbEffect {
-    explicit EnvironmentalReverbEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEnvironmentalReverbEffect follow.
-    Return<Result> setBypass(bool bypass)  override;
-    Return<void> getBypass(getBypass_cb _hidl_cb)  override;
-    Return<Result> setRoomLevel(int16_t roomLevel)  override;
-    Return<void> getRoomLevel(getRoomLevel_cb _hidl_cb)  override;
-    Return<Result> setRoomHfLevel(int16_t roomHfLevel)  override;
-    Return<void> getRoomHfLevel(getRoomHfLevel_cb _hidl_cb)  override;
-    Return<Result> setDecayTime(uint32_t decayTime)  override;
-    Return<void> getDecayTime(getDecayTime_cb _hidl_cb)  override;
-    Return<Result> setDecayHfRatio(int16_t decayHfRatio)  override;
-    Return<void> getDecayHfRatio(getDecayHfRatio_cb _hidl_cb)  override;
-    Return<Result> setReflectionsLevel(int16_t reflectionsLevel)  override;
-    Return<void> getReflectionsLevel(getReflectionsLevel_cb _hidl_cb)  override;
-    Return<Result> setReflectionsDelay(uint32_t reflectionsDelay)  override;
-    Return<void> getReflectionsDelay(getReflectionsDelay_cb _hidl_cb)  override;
-    Return<Result> setReverbLevel(int16_t reverbLevel)  override;
-    Return<void> getReverbLevel(getReverbLevel_cb _hidl_cb)  override;
-    Return<Result> setReverbDelay(uint32_t reverbDelay)  override;
-    Return<void> getReverbDelay(getReverbDelay_cb _hidl_cb)  override;
-    Return<Result> setDiffusion(int16_t diffusion)  override;
-    Return<void> getDiffusion(getDiffusion_cb _hidl_cb)  override;
-    Return<Result> setDensity(int16_t density)  override;
-    Return<void> getDensity(getDensity_cb _hidl_cb)  override;
-    Return<Result> setAllProperties(
-            const IEnvironmentalReverbEffect::AllProperties& properties)  override;
-    Return<void> getAllProperties(getAllProperties_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~EnvironmentalReverbEffect();
-
-    void propertiesFromHal(
-            const t_reverb_settings& halProperties,
-            IEnvironmentalReverbEffect::AllProperties* properties);
-    void propertiesToHal(
-            const IEnvironmentalReverbEffect::AllProperties& properties,
-            t_reverb_settings* halProperties);
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/EnvironmentalReverbEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_ENVIRONMENTALREVERBEFFECT_H
diff --git a/audio/effect/2.0/default/EqualizerEffect.cpp b/audio/effect/2.0/default/EqualizerEffect.cpp
index 808d8eb..d6e056c 100644
--- a/audio/effect/2.0/default/EqualizerEffect.cpp
+++ b/audio/effect/2.0/default/EqualizerEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -14,298 +14,10 @@
  * limitations under the License.
  */
 
-#include <memory.h>
-
 #define LOG_TAG "Equalizer_HAL"
-#include <android/log.h>
 
 #include "EqualizerEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-EqualizerEffect::EqualizerEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-EqualizerEffect::~EqualizerEffect() {}
-
-void EqualizerEffect::propertiesFromHal(
-        const t_equalizer_settings& halProperties,
-        IEqualizerEffect::AllProperties* properties) {
-    properties->curPreset = halProperties.curPreset;
-    // t_equalizer_settings incorrectly defines bandLevels as uint16_t,
-    // whereas the actual type of values used by effects is int16_t.
-    const int16_t* signedBandLevels =
-            reinterpret_cast<const int16_t*>(&halProperties.bandLevels[0]);
-    properties->bandLevels.setToExternal(
-            const_cast<int16_t*>(signedBandLevels), halProperties.numBands);
-}
-
-std::vector<uint8_t> EqualizerEffect::propertiesToHal(
-        const IEqualizerEffect::AllProperties& properties,
-        t_equalizer_settings** halProperties) {
-    size_t bandsSize = properties.bandLevels.size() * sizeof(uint16_t);
-    std::vector<uint8_t> halBuffer(sizeof(t_equalizer_settings) + bandsSize, 0);
-    *halProperties = reinterpret_cast<t_equalizer_settings*>(&halBuffer[0]);
-    (*halProperties)->curPreset = properties.curPreset;
-    (*halProperties)->numBands = properties.bandLevels.size();
-    memcpy((*halProperties)->bandLevels, &properties.bandLevels[0], bandsSize);
-    return halBuffer;
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> EqualizerEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> EqualizerEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> EqualizerEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> EqualizerEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> EqualizerEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> EqualizerEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> EqualizerEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> EqualizerEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> EqualizerEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> EqualizerEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> EqualizerEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> EqualizerEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> EqualizerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> EqualizerEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> EqualizerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> EqualizerEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> EqualizerEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> EqualizerEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> EqualizerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> EqualizerEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> EqualizerEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> EqualizerEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> EqualizerEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> EqualizerEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> EqualizerEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> EqualizerEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> EqualizerEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> EqualizerEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEqualizerEffect follow.
-Return<void> EqualizerEffect::getNumBands(getNumBands_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(EQ_PARAM_NUM_BANDS, _hidl_cb);
-}
-
-Return<void> EqualizerEffect::getLevelRange(getLevelRange_cb _hidl_cb)  {
-    int16_t halLevels[2] = { 0, 0 };
-    Result retval = mEffect->getParam(EQ_PARAM_LEVEL_RANGE, halLevels);
-    _hidl_cb(retval, halLevels[0], halLevels[1]);
-    return Void();
-}
-
-Return<Result> EqualizerEffect::setBandLevel(uint16_t band, int16_t level)  {
-    return mEffect->setParam(EQ_PARAM_BAND_LEVEL, band, level);
-}
-
-Return<void> EqualizerEffect::getBandLevel(uint16_t band, getBandLevel_cb _hidl_cb)  {
-    int16_t halLevel = 0;
-    Result retval = mEffect->getParam(EQ_PARAM_BAND_LEVEL, band, halLevel);
-    _hidl_cb(retval, halLevel);
-    return Void();
-}
-
-Return<void> EqualizerEffect::getBandCenterFrequency(
-        uint16_t band, getBandCenterFrequency_cb _hidl_cb)  {
-    uint32_t halFreq = 0;
-    Result retval = mEffect->getParam(EQ_PARAM_CENTER_FREQ, band, halFreq);
-    _hidl_cb(retval, halFreq);
-    return Void();
-}
-
-Return<void> EqualizerEffect::getBandFrequencyRange(
-        uint16_t band, getBandFrequencyRange_cb _hidl_cb)  {
-    uint32_t halFreqs[2] = { 0, 0 };
-    Result retval = mEffect->getParam(EQ_PARAM_BAND_FREQ_RANGE, band, halFreqs);
-    _hidl_cb(retval, halFreqs[0], halFreqs[1]);
-    return Void();
-}
-
-Return<void> EqualizerEffect::getBandForFrequency(uint32_t freq, getBandForFrequency_cb _hidl_cb)  {
-    uint16_t halBand = 0;
-    Result retval = mEffect->getParam(EQ_PARAM_GET_BAND, freq, halBand);
-    _hidl_cb(retval, halBand);
-    return Void();
-}
-
-Return<void> EqualizerEffect::getPresetNames(getPresetNames_cb _hidl_cb)  {
-    uint16_t halPresetCount = 0;
-    Result retval = mEffect->getParam(EQ_PARAM_GET_NUM_OF_PRESETS, halPresetCount);
-    hidl_vec<hidl_string> presetNames;
-    if (retval == Result::OK) {
-        presetNames.resize(halPresetCount);
-        for (uint16_t i = 0; i < halPresetCount; ++i) {
-            char halPresetName[EFFECT_STRING_LEN_MAX];
-            retval = mEffect->getParam(EQ_PARAM_GET_PRESET_NAME, i, halPresetName);
-            if (retval == Result::OK) {
-                presetNames[i] = halPresetName;
-            } else {
-                presetNames.resize(i);
-            }
-        }
-    }
-    _hidl_cb(retval, presetNames);
-    return Void();
-}
-
-Return<Result> EqualizerEffect::setCurrentPreset(uint16_t preset)  {
-    return mEffect->setParam(EQ_PARAM_CUR_PRESET, preset);
-}
-
-Return<void> EqualizerEffect::getCurrentPreset(getCurrentPreset_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(EQ_PARAM_CUR_PRESET, _hidl_cb);
-}
-
-Return<Result> EqualizerEffect::setAllProperties(
-        const IEqualizerEffect::AllProperties& properties)  {
-    t_equalizer_settings *halPropertiesPtr = nullptr;
-    std::vector<uint8_t> halBuffer = propertiesToHal(properties, &halPropertiesPtr);
-    uint32_t paramId = EQ_PARAM_PROPERTIES;
-    return mEffect->setParameterImpl(
-            sizeof(paramId), &paramId, halBuffer.size(), halPropertiesPtr);
-}
-
-Return<void> EqualizerEffect::getAllProperties(getAllProperties_cb _hidl_cb)  {
-    uint16_t numBands = 0;
-    Result retval = mEffect->getParam(EQ_PARAM_NUM_BANDS, numBands);
-    AllProperties properties;
-    if (retval != Result::OK) {
-        _hidl_cb(retval, properties);
-        return Void();
-    }
-    size_t valueSize = sizeof(t_equalizer_settings) + sizeof(int16_t) * numBands;
-    uint32_t paramId = EQ_PARAM_PROPERTIES;
-    retval = mEffect->getParameterImpl(
-            sizeof(paramId), &paramId, valueSize,
-            [&] (uint32_t, const void* valueData) {
-                const t_equalizer_settings* halProperties =
-                        reinterpret_cast<const t_equalizer_settings*>(valueData);
-                propertiesFromHal(*halProperties, &properties);
-            });
-    _hidl_cb(retval, properties);
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/EqualizerEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/EqualizerEffect.h b/audio/effect/2.0/default/EqualizerEffect.h
index 9e8d75b..54cdd50 100644
--- a/audio/effect/2.0/default/EqualizerEffect.h
+++ b/audio/effect/2.0/default/EqualizerEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -17,133 +17,12 @@
 #ifndef ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_EQUALIZEREFFECT_H
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_EQUALIZEREFFECT_H
 
-#include <vector>
-
-#include <system/audio_effects/effect_equalizer.h>
-
 #include <android/hardware/audio/effect/2.0/IEqualizerEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::IEqualizerEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct EqualizerEffect : public IEqualizerEffect {
-    explicit EqualizerEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEqualizerEffect follow.
-    Return<void> getNumBands(getNumBands_cb _hidl_cb)  override;
-    Return<void> getLevelRange(getLevelRange_cb _hidl_cb)  override;
-    Return<Result> setBandLevel(uint16_t band, int16_t level)  override;
-    Return<void> getBandLevel(uint16_t band, getBandLevel_cb _hidl_cb)  override;
-    Return<void> getBandCenterFrequency(
-            uint16_t band, getBandCenterFrequency_cb _hidl_cb)  override;
-    Return<void> getBandFrequencyRange(uint16_t band, getBandFrequencyRange_cb _hidl_cb)  override;
-    Return<void> getBandForFrequency(uint32_t freq, getBandForFrequency_cb _hidl_cb)  override;
-    Return<void> getPresetNames(getPresetNames_cb _hidl_cb)  override;
-    Return<Result> setCurrentPreset(uint16_t preset)  override;
-    Return<void> getCurrentPreset(getCurrentPreset_cb _hidl_cb)  override;
-    Return<Result> setAllProperties(const IEqualizerEffect::AllProperties& properties)  override;
-    Return<void> getAllProperties(getAllProperties_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~EqualizerEffect();
-
-    void propertiesFromHal(
-            const t_equalizer_settings& halProperties,
-            IEqualizerEffect::AllProperties* properties);
-    std::vector<uint8_t> propertiesToHal(
-            const IEqualizerEffect::AllProperties& properties,
-            t_equalizer_settings** halProperties);
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/EqualizerEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_EQUALIZEREFFECT_H
diff --git a/audio/effect/2.0/default/LoudnessEnhancerEffect.cpp b/audio/effect/2.0/default/LoudnessEnhancerEffect.cpp
index fda5eb0..2dca0f4 100644
--- a/audio/effect/2.0/default/LoudnessEnhancerEffect.cpp
+++ b/audio/effect/2.0/default/LoudnessEnhancerEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -14,191 +14,10 @@
  * limitations under the License.
  */
 
-#include <system/audio_effects/effect_loudnessenhancer.h>
-
 #define LOG_TAG "LoudnessEnhancer_HAL"
-#include <system/audio_effects/effect_aec.h>
-#include <android/log.h>
 
 #include "LoudnessEnhancerEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-LoudnessEnhancerEffect::LoudnessEnhancerEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-LoudnessEnhancerEffect::~LoudnessEnhancerEffect() {}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> LoudnessEnhancerEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> LoudnessEnhancerEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> LoudnessEnhancerEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> LoudnessEnhancerEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> LoudnessEnhancerEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> LoudnessEnhancerEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> LoudnessEnhancerEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> LoudnessEnhancerEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> LoudnessEnhancerEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> LoudnessEnhancerEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> LoudnessEnhancerEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> LoudnessEnhancerEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> LoudnessEnhancerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> LoudnessEnhancerEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> LoudnessEnhancerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> LoudnessEnhancerEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> LoudnessEnhancerEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> LoudnessEnhancerEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> LoudnessEnhancerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> LoudnessEnhancerEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> LoudnessEnhancerEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> LoudnessEnhancerEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> LoudnessEnhancerEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> LoudnessEnhancerEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> LoudnessEnhancerEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> LoudnessEnhancerEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> LoudnessEnhancerEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> LoudnessEnhancerEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::ILoudnessEnhancerEffect follow.
-Return<Result> LoudnessEnhancerEffect::setTargetGain(int32_t targetGainMb)  {
-    return mEffect->setParam(LOUDNESS_ENHANCER_DEFAULT_TARGET_GAIN_MB, targetGainMb);
-}
-
-Return<void> LoudnessEnhancerEffect::getTargetGain(getTargetGain_cb _hidl_cb)  {
-    // AOSP Loudness Enhancer expects the size of the request to not include the
-    // size of the parameter.
-    uint32_t paramId = LOUDNESS_ENHANCER_DEFAULT_TARGET_GAIN_MB;
-    uint32_t targetGainMb = 0;
-    Result retval = mEffect->getParameterImpl(
-            sizeof(paramId), &paramId,
-            0, sizeof(targetGainMb),
-            [&] (uint32_t, const void* valueData) {
-                memcpy(&targetGainMb, valueData, sizeof(targetGainMb));
-            });
-    _hidl_cb(retval, targetGainMb);
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/LoudnessEnhancerEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/LoudnessEnhancerEffect.h b/audio/effect/2.0/default/LoudnessEnhancerEffect.h
index 039b8d6..992e238 100644
--- a/audio/effect/2.0/default/LoudnessEnhancerEffect.h
+++ b/audio/effect/2.0/default/LoudnessEnhancerEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -18,110 +18,11 @@
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_LOUDNESSENHANCEREFFECT_H
 
 #include <android/hardware/audio/effect/2.0/ILoudnessEnhancerEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::ILoudnessEnhancerEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct LoudnessEnhancerEffect : public ILoudnessEnhancerEffect {
-    explicit LoudnessEnhancerEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::ILoudnessEnhancerEffect follow.
-    Return<Result> setTargetGain(int32_t targetGainMb)  override;
-    Return<void> getTargetGain(getTargetGain_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~LoudnessEnhancerEffect();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/LoudnessEnhancerEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_LOUDNESSENHANCEREFFECT_H
diff --git a/audio/effect/2.0/default/NoiseSuppressionEffect.cpp b/audio/effect/2.0/default/NoiseSuppressionEffect.cpp
index 7c4e06d..089e811 100644
--- a/audio/effect/2.0/default/NoiseSuppressionEffect.cpp
+++ b/audio/effect/2.0/default/NoiseSuppressionEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,220 +15,9 @@
  */
 
 #define LOG_TAG "NS_Effect_HAL"
-#include <android/log.h>
 
 #include "NoiseSuppressionEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-NoiseSuppressionEffect::NoiseSuppressionEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-NoiseSuppressionEffect::~NoiseSuppressionEffect() {}
-
-void NoiseSuppressionEffect::propertiesFromHal(
-        const t_ns_settings& halProperties,
-        INoiseSuppressionEffect::AllProperties* properties) {
-    properties->level = Level(halProperties.level);
-    properties->type = Type(halProperties.type);
-}
-
-void NoiseSuppressionEffect::propertiesToHal(
-        const INoiseSuppressionEffect::AllProperties& properties,
-        t_ns_settings* halProperties) {
-    halProperties->level = static_cast<uint32_t>(properties.level);
-    halProperties->type = static_cast<uint32_t>(properties.type);
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> NoiseSuppressionEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> NoiseSuppressionEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> NoiseSuppressionEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> NoiseSuppressionEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> NoiseSuppressionEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> NoiseSuppressionEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> NoiseSuppressionEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> NoiseSuppressionEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> NoiseSuppressionEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> NoiseSuppressionEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> NoiseSuppressionEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> NoiseSuppressionEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> NoiseSuppressionEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> NoiseSuppressionEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> NoiseSuppressionEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> NoiseSuppressionEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> NoiseSuppressionEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> NoiseSuppressionEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> NoiseSuppressionEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> NoiseSuppressionEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> NoiseSuppressionEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> NoiseSuppressionEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> NoiseSuppressionEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> NoiseSuppressionEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> NoiseSuppressionEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> NoiseSuppressionEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> NoiseSuppressionEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> NoiseSuppressionEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::INoiseSuppressionEffect follow.
-Return<Result> NoiseSuppressionEffect::setSuppressionLevel(INoiseSuppressionEffect::Level level)  {
-    return mEffect->setParam(NS_PARAM_LEVEL, static_cast<int32_t>(level));
-}
-
-Return<void> NoiseSuppressionEffect::getSuppressionLevel(getSuppressionLevel_cb _hidl_cb)  {
-    int32_t halLevel = 0;
-    Result retval = mEffect->getParam(NS_PARAM_LEVEL, halLevel);
-    _hidl_cb(retval, Level(halLevel));
-    return Void();
-}
-
-Return<Result> NoiseSuppressionEffect::setSuppressionType(INoiseSuppressionEffect::Type type)  {
-    return mEffect->setParam(NS_PARAM_TYPE, static_cast<int32_t>(type));
-}
-
-Return<void> NoiseSuppressionEffect::getSuppressionType(getSuppressionType_cb _hidl_cb)  {
-    int32_t halType = 0;
-    Result retval = mEffect->getParam(NS_PARAM_TYPE, halType);
-    _hidl_cb(retval, Type(halType));
-    return Void();
-}
-
-Return<Result> NoiseSuppressionEffect::setAllProperties(
-        const INoiseSuppressionEffect::AllProperties& properties)  {
-    t_ns_settings halProperties;
-    propertiesToHal(properties, &halProperties);
-    return mEffect->setParam(NS_PARAM_PROPERTIES, halProperties);
-}
-
-Return<void> NoiseSuppressionEffect::getAllProperties(getAllProperties_cb _hidl_cb)  {
-    t_ns_settings halProperties;
-    Result retval = mEffect->getParam(NS_PARAM_PROPERTIES, halProperties);
-    AllProperties properties;
-    propertiesFromHal(halProperties, &properties);
-    _hidl_cb(retval, properties);
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/NoiseSuppressionEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/NoiseSuppressionEffect.h b/audio/effect/2.0/default/NoiseSuppressionEffect.h
index 5491201..0eee4b5 100644
--- a/audio/effect/2.0/default/NoiseSuppressionEffect.h
+++ b/audio/effect/2.0/default/NoiseSuppressionEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -17,125 +17,12 @@
 #ifndef ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_NOISESUPPRESSIONEFFECT_H
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_NOISESUPPRESSIONEFFECT_H
 
-#include <system/audio_effects/effect_ns.h>
-
 #include <android/hardware/audio/effect/2.0/INoiseSuppressionEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::INoiseSuppressionEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct NoiseSuppressionEffect : public INoiseSuppressionEffect {
-    explicit NoiseSuppressionEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::INoiseSuppressionEffect follow.
-    Return<Result> setSuppressionLevel(INoiseSuppressionEffect::Level level)  override;
-    Return<void> getSuppressionLevel(getSuppressionLevel_cb _hidl_cb)  override;
-    Return<Result> setSuppressionType(INoiseSuppressionEffect::Type type)  override;
-    Return<void> getSuppressionType(getSuppressionType_cb _hidl_cb)  override;
-    Return<Result> setAllProperties(
-            const INoiseSuppressionEffect::AllProperties& properties)  override;
-    Return<void> getAllProperties(getAllProperties_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~NoiseSuppressionEffect();
-
-    void propertiesFromHal(
-            const t_ns_settings& halProperties,
-            INoiseSuppressionEffect::AllProperties* properties);
-    void propertiesToHal(
-            const INoiseSuppressionEffect::AllProperties& properties,
-            t_ns_settings* halProperties);
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/NoiseSuppressionEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_NOISESUPPRESSIONEFFECT_H
diff --git a/audio/effect/2.0/default/PresetReverbEffect.cpp b/audio/effect/2.0/default/PresetReverbEffect.cpp
index 5f17791..0648f6a 100644
--- a/audio/effect/2.0/default/PresetReverbEffect.cpp
+++ b/audio/effect/2.0/default/PresetReverbEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,180 +15,9 @@
  */
 
 #define LOG_TAG "PresetReverb_HAL"
-#include <system/audio_effects/effect_presetreverb.h>
-#include <android/log.h>
 
 #include "PresetReverbEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-PresetReverbEffect::PresetReverbEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-PresetReverbEffect::~PresetReverbEffect() {}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> PresetReverbEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> PresetReverbEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> PresetReverbEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> PresetReverbEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> PresetReverbEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> PresetReverbEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> PresetReverbEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> PresetReverbEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> PresetReverbEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> PresetReverbEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> PresetReverbEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> PresetReverbEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> PresetReverbEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> PresetReverbEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> PresetReverbEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> PresetReverbEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> PresetReverbEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> PresetReverbEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> PresetReverbEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> PresetReverbEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> PresetReverbEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> PresetReverbEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> PresetReverbEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> PresetReverbEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> PresetReverbEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> PresetReverbEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> PresetReverbEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> PresetReverbEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IPresetReverbEffect follow.
-Return<Result> PresetReverbEffect::setPreset(IPresetReverbEffect::Preset preset)  {
-    return mEffect->setParam(REVERB_PARAM_PRESET, static_cast<t_reverb_presets>(preset));
-}
-
-Return<void> PresetReverbEffect::getPreset(getPreset_cb _hidl_cb)  {
-    t_reverb_presets halPreset = REVERB_PRESET_NONE;
-    Result retval = mEffect->getParam(REVERB_PARAM_PRESET, halPreset);
-    _hidl_cb(retval, Preset(halPreset));
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/PresetReverbEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/PresetReverbEffect.h b/audio/effect/2.0/default/PresetReverbEffect.h
index 4eb074a..1ea1626 100644
--- a/audio/effect/2.0/default/PresetReverbEffect.h
+++ b/audio/effect/2.0/default/PresetReverbEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -18,110 +18,11 @@
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_PRESETREVERBEFFECT_H
 
 #include <android/hardware/audio/effect/2.0/IPresetReverbEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::IPresetReverbEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct PresetReverbEffect : public IPresetReverbEffect {
-    explicit PresetReverbEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IPresetReverbEffect follow.
-    Return<Result> setPreset(IPresetReverbEffect::Preset preset)  override;
-    Return<void> getPreset(getPreset_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~PresetReverbEffect();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/PresetReverbEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_PRESETREVERBEFFECT_H
diff --git a/audio/effect/2.0/default/VirtualizerEffect.cpp b/audio/effect/2.0/default/VirtualizerEffect.cpp
index c1fe52f..63d3eb9 100644
--- a/audio/effect/2.0/default/VirtualizerEffect.cpp
+++ b/audio/effect/2.0/default/VirtualizerEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -14,235 +14,10 @@
  * limitations under the License.
  */
 
-#include <memory.h>
-
 #define LOG_TAG "Virtualizer_HAL"
-#include <system/audio_effects/effect_virtualizer.h>
-#include <android/log.h>
 
 #include "VirtualizerEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-VirtualizerEffect::VirtualizerEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)) {
-}
-
-VirtualizerEffect::~VirtualizerEffect() {}
-
-void VirtualizerEffect::speakerAnglesFromHal(
-        const int32_t* halAngles, uint32_t channelCount, hidl_vec<SpeakerAngle>& speakerAngles) {
-    speakerAngles.resize(channelCount);
-    for (uint32_t i = 0; i < channelCount; ++i) {
-        speakerAngles[i].mask = AudioChannelMask(*halAngles++);
-        speakerAngles[i].azimuth = *halAngles++;
-        speakerAngles[i].elevation = *halAngles++;
-    }
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> VirtualizerEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> VirtualizerEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> VirtualizerEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> VirtualizerEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> VirtualizerEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> VirtualizerEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> VirtualizerEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> VirtualizerEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> VirtualizerEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> VirtualizerEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> VirtualizerEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> VirtualizerEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> VirtualizerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> VirtualizerEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> VirtualizerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> VirtualizerEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> VirtualizerEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> VirtualizerEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> VirtualizerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> VirtualizerEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> VirtualizerEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> VirtualizerEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> VirtualizerEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> VirtualizerEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> VirtualizerEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> VirtualizerEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> VirtualizerEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> VirtualizerEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IVirtualizerEffect follow.
-Return<bool> VirtualizerEffect::isStrengthSupported()  {
-    bool halSupported = false;
-    mEffect->getParam(VIRTUALIZER_PARAM_STRENGTH_SUPPORTED, halSupported);
-    return halSupported;
-}
-
-Return<Result> VirtualizerEffect::setStrength(uint16_t strength)  {
-    return mEffect->setParam(VIRTUALIZER_PARAM_STRENGTH, strength);
-}
-
-Return<void> VirtualizerEffect::getStrength(getStrength_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(VIRTUALIZER_PARAM_STRENGTH, _hidl_cb);
-}
-
-Return<void> VirtualizerEffect::getVirtualSpeakerAngles(
-        AudioChannelMask mask, AudioDevice device, getVirtualSpeakerAngles_cb _hidl_cb)  {
-    uint32_t channelCount = audio_channel_count_from_out_mask(
-            static_cast<audio_channel_mask_t>(mask));
-    size_t halSpeakerAnglesSize = sizeof(int32_t) * 3 * channelCount;
-    uint32_t halParam[3] = {
-        VIRTUALIZER_PARAM_VIRTUAL_SPEAKER_ANGLES,
-        static_cast<audio_channel_mask_t>(mask),
-        static_cast<audio_devices_t>(device)
-    };
-    hidl_vec<SpeakerAngle> speakerAngles;
-    Result retval = mEffect->getParameterImpl(
-            sizeof(halParam), halParam,
-            halSpeakerAnglesSize,
-            [&] (uint32_t valueSize, const void* valueData) {
-                if (valueSize > halSpeakerAnglesSize) {
-                    valueSize = halSpeakerAnglesSize;
-                } else if (valueSize < halSpeakerAnglesSize) {
-                    channelCount = valueSize / (sizeof(int32_t) * 3);
-                }
-                speakerAnglesFromHal(
-                        reinterpret_cast<const int32_t*>(valueData), channelCount, speakerAngles);
-            });
-    _hidl_cb(retval, speakerAngles);
-    return Void();
-}
-
-Return<Result> VirtualizerEffect::forceVirtualizationMode(AudioDevice device)  {
-    return mEffect->setParam(
-            VIRTUALIZER_PARAM_FORCE_VIRTUALIZATION_MODE, static_cast<audio_devices_t>(device));
-}
-
-Return<void> VirtualizerEffect::getVirtualizationMode(getVirtualizationMode_cb _hidl_cb)  {
-    uint32_t halMode = 0;
-    Result retval = mEffect->getParam(VIRTUALIZER_PARAM_FORCE_VIRTUALIZATION_MODE, halMode);
-    _hidl_cb(retval, AudioDevice(halMode));
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/VirtualizerEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/VirtualizerEffect.h b/audio/effect/2.0/default/VirtualizerEffect.h
index 536775f..04f93c4 100644
--- a/audio/effect/2.0/default/VirtualizerEffect.h
+++ b/audio/effect/2.0/default/VirtualizerEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -18,121 +18,11 @@
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_VIRTUALIZEREFFECT_H
 
 #include <android/hardware/audio/effect/2.0/IVirtualizerEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioChannelMask;
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::IVirtualizerEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct VirtualizerEffect : public IVirtualizerEffect {
-    explicit VirtualizerEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IVirtualizerEffect follow.
-    Return<bool> isStrengthSupported()  override;
-    Return<Result> setStrength(uint16_t strength)  override;
-    Return<void> getStrength(getStrength_cb _hidl_cb)  override;
-    Return<void> getVirtualSpeakerAngles(
-            AudioChannelMask mask,
-            AudioDevice device,
-            getVirtualSpeakerAngles_cb _hidl_cb)  override;
-    Return<Result> forceVirtualizationMode(AudioDevice device)  override;
-    Return<void> getVirtualizationMode(getVirtualizationMode_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-
-    virtual ~VirtualizerEffect();
-
-    void speakerAnglesFromHal(
-            const int32_t* halAngles, uint32_t channelCount, hidl_vec<SpeakerAngle>& speakerAngles);
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/VirtualizerEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_VIRTUALIZEREFFECT_H
diff --git a/audio/effect/2.0/default/VisualizerEffect.cpp b/audio/effect/2.0/default/VisualizerEffect.cpp
index 2cd3240..5235524 100644
--- a/audio/effect/2.0/default/VisualizerEffect.cpp
+++ b/audio/effect/2.0/default/VisualizerEffect.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -15,254 +15,9 @@
  */
 
 #define LOG_TAG "Visualizer_HAL"
-#include <system/audio_effects/effect_visualizer.h>
-#include <android/log.h>
 
 #include "VisualizerEffect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-VisualizerEffect::VisualizerEffect(effect_handle_t handle)
-        : mEffect(new Effect(handle)), mCaptureSize(0), mMeasurementMode(MeasurementMode::NONE) {
-}
-
-VisualizerEffect::~VisualizerEffect() {}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-Return<Result> VisualizerEffect::init() {
-    return mEffect->init();
-}
-
-Return<Result> VisualizerEffect::setConfig(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> VisualizerEffect::reset() {
-    return mEffect->reset();
-}
-
-Return<Result> VisualizerEffect::enable() {
-    return mEffect->enable();
-}
-
-Return<Result> VisualizerEffect::disable() {
-    return mEffect->disable();
-}
-
-Return<Result> VisualizerEffect::setDevice(AudioDevice device) {
-    return mEffect->setDevice(device);
-}
-
-Return<void> VisualizerEffect::setAndGetVolume(
-        const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb) {
-    return mEffect->setAndGetVolume(volumes, _hidl_cb);
-}
-
-Return<Result> VisualizerEffect::volumeChangeNotification(
-        const hidl_vec<uint32_t>& volumes) {
-    return mEffect->volumeChangeNotification(volumes);
-}
-
-Return<Result> VisualizerEffect::setAudioMode(AudioMode mode) {
-    return mEffect->setAudioMode(mode);
-}
-
-Return<Result> VisualizerEffect::setConfigReverse(
-        const EffectConfig& config,
-        const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-        const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
-    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
-}
-
-Return<Result> VisualizerEffect::setInputDevice(AudioDevice device) {
-    return mEffect->setInputDevice(device);
-}
-
-Return<void> VisualizerEffect::getConfig(getConfig_cb _hidl_cb) {
-    return mEffect->getConfig(_hidl_cb);
-}
-
-Return<void> VisualizerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
-    return mEffect->getConfigReverse(_hidl_cb);
-}
-
-Return<void> VisualizerEffect::getSupportedAuxChannelsConfigs(
-        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
-    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
-}
-
-Return<void> VisualizerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    return mEffect->getAuxChannelsConfig(_hidl_cb);
-}
-
-Return<Result> VisualizerEffect::setAuxChannelsConfig(
-        const EffectAuxChannelsConfig& config) {
-    return mEffect->setAuxChannelsConfig(config);
-}
-
-Return<Result> VisualizerEffect::setAudioSource(AudioSource source) {
-    return mEffect->setAudioSource(source);
-}
-
-Return<Result> VisualizerEffect::offload(const EffectOffloadParameter& param) {
-    return mEffect->offload(param);
-}
-
-Return<void> VisualizerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
-    return mEffect->getDescriptor(_hidl_cb);
-}
-
-Return<void> VisualizerEffect::prepareForProcessing(
-        prepareForProcessing_cb _hidl_cb) {
-    return mEffect->prepareForProcessing(_hidl_cb);
-}
-
-Return<Result> VisualizerEffect::setProcessBuffers(
-        const AudioBuffer& inBuffer, const AudioBuffer& outBuffer) {
-    return mEffect->setProcessBuffers(inBuffer, outBuffer);
-}
-
-Return<void> VisualizerEffect::command(
-        uint32_t commandId,
-        const hidl_vec<uint8_t>& data,
-        uint32_t resultMaxSize,
-        command_cb _hidl_cb) {
-    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
-}
-
-Return<Result> VisualizerEffect::setParameter(
-        const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value) {
-    return mEffect->setParameter(parameter, value);
-}
-
-Return<void> VisualizerEffect::getParameter(
-        const hidl_vec<uint8_t>& parameter,
-        uint32_t valueMaxSize,
-        getParameter_cb _hidl_cb) {
-    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
-}
-
-Return<void> VisualizerEffect::getSupportedConfigsForFeature(
-        uint32_t featureId,
-        uint32_t maxConfigs,
-        uint32_t configSize,
-        getSupportedConfigsForFeature_cb _hidl_cb) {
-    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
-}
-
-Return<void> VisualizerEffect::getCurrentConfigForFeature(
-        uint32_t featureId,
-        uint32_t configSize,
-        getCurrentConfigForFeature_cb _hidl_cb) {
-    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
-}
-
-Return<Result> VisualizerEffect::setCurrentConfigForFeature(
-        uint32_t featureId, const hidl_vec<uint8_t>& configData) {
-    return mEffect->setCurrentConfigForFeature(featureId, configData);
-}
-
-Return<Result> VisualizerEffect::close() {
-    return mEffect->close();
-}
-
-// Methods from ::android::hardware::audio::effect::V2_0::IVisualizerEffect follow.
-Return<Result> VisualizerEffect::setCaptureSize(uint16_t captureSize)  {
-    Result retval = mEffect->setParam(VISUALIZER_PARAM_CAPTURE_SIZE, captureSize);
-    if (retval == Result::OK) {
-        mCaptureSize = captureSize;
-    }
-    return retval;
-}
-
-Return<void> VisualizerEffect::getCaptureSize(getCaptureSize_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(VISUALIZER_PARAM_CAPTURE_SIZE, _hidl_cb);
-}
-
-Return<Result> VisualizerEffect::setScalingMode(IVisualizerEffect::ScalingMode scalingMode)  {
-    return mEffect->setParam(VISUALIZER_PARAM_SCALING_MODE, static_cast<int32_t>(scalingMode));
-}
-
-Return<void> VisualizerEffect::getScalingMode(getScalingMode_cb _hidl_cb)  {
-    int32_t halMode;
-    Result retval = mEffect->getParam(VISUALIZER_PARAM_SCALING_MODE, halMode);
-    _hidl_cb(retval, ScalingMode(halMode));
-    return Void();
-}
-
-Return<Result> VisualizerEffect::setLatency(uint32_t latencyMs)  {
-    return mEffect->setParam(VISUALIZER_PARAM_LATENCY, latencyMs);
-}
-
-Return<void> VisualizerEffect::getLatency(getLatency_cb _hidl_cb)  {
-    return mEffect->getIntegerParam(VISUALIZER_PARAM_LATENCY, _hidl_cb);
-}
-
-Return<Result> VisualizerEffect::setMeasurementMode(
-        IVisualizerEffect::MeasurementMode measurementMode)  {
-    Result retval = mEffect->setParam(
-            VISUALIZER_PARAM_MEASUREMENT_MODE, static_cast<int32_t>(measurementMode));
-    if (retval == Result::OK) {
-        mMeasurementMode = measurementMode;
-    }
-    return retval;
-}
-
-Return<void> VisualizerEffect::getMeasurementMode(getMeasurementMode_cb _hidl_cb)  {
-    int32_t halMode;
-    Result retval = mEffect->getParam(VISUALIZER_PARAM_MEASUREMENT_MODE, halMode);
-    _hidl_cb(retval, MeasurementMode(halMode));
-    return Void();
-}
-
-Return<void> VisualizerEffect::capture(capture_cb _hidl_cb)  {
-    if (mCaptureSize == 0) {
-        _hidl_cb(Result::NOT_INITIALIZED, hidl_vec<uint8_t>());
-        return Void();
-    }
-    uint32_t halCaptureSize = mCaptureSize;
-    uint8_t halCapture[mCaptureSize];
-    Result retval = mEffect->sendCommandReturningData(
-            VISUALIZER_CMD_CAPTURE, "VISUALIZER_CAPTURE", &halCaptureSize, halCapture);
-    hidl_vec<uint8_t> capture;
-    if (retval == Result::OK) {
-        capture.setToExternal(&halCapture[0], halCaptureSize);
-    }
-    _hidl_cb(retval, capture);
-    return Void();
-}
-
-Return<void> VisualizerEffect::measure(measure_cb _hidl_cb)  {
-    if (mMeasurementMode == MeasurementMode::NONE) {
-        _hidl_cb(Result::NOT_INITIALIZED, Measurement());
-        return Void();
-    }
-    int32_t halMeasurement[MEASUREMENT_COUNT];
-    uint32_t halMeasurementSize = sizeof(halMeasurement);
-    Result retval = mEffect->sendCommandReturningData(
-            VISUALIZER_CMD_MEASURE, "VISUALIZER_MEASURE", &halMeasurementSize, halMeasurement);
-    Measurement measurement = { .mode = MeasurementMode::PEAK_RMS };
-    measurement.value.peakAndRms.peakMb = 0;
-    measurement.value.peakAndRms.rmsMb = 0;
-    if (retval == Result::OK) {
-        measurement.value.peakAndRms.peakMb = halMeasurement[MEASUREMENT_IDX_PEAK];
-        measurement.value.peakAndRms.rmsMb = halMeasurement[MEASUREMENT_IDX_RMS];
-    }
-    _hidl_cb(retval, measurement);
-    return Void();
-}
-
-} // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/VisualizerEffect.impl.h>
+#undef AUDIO_HAL_VERSION
diff --git a/audio/effect/2.0/default/VisualizerEffect.h b/audio/effect/2.0/default/VisualizerEffect.h
index fd40ca8..940f15d 100644
--- a/audio/effect/2.0/default/VisualizerEffect.h
+++ b/audio/effect/2.0/default/VisualizerEffect.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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.
@@ -18,120 +18,11 @@
 #define ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_VISUALIZEREFFECT_H
 
 #include <android/hardware/audio/effect/2.0/IVisualizerEffect.h>
-#include <hidl/Status.h>
-
-#include <hidl/MQDescriptor.h>
 
 #include "Effect.h"
 
-namespace android {
-namespace hardware {
-namespace audio {
-namespace effect {
-namespace V2_0 {
-namespace implementation {
-
-using ::android::hardware::audio::common::V2_0::AudioDevice;
-using ::android::hardware::audio::common::V2_0::AudioMode;
-using ::android::hardware::audio::common::V2_0::AudioSource;
-using ::android::hardware::audio::effect::V2_0::AudioBuffer;
-using ::android::hardware::audio::effect::V2_0::EffectAuxChannelsConfig;
-using ::android::hardware::audio::effect::V2_0::EffectConfig;
-using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
-using ::android::hardware::audio::effect::V2_0::EffectOffloadParameter;
-using ::android::hardware::audio::effect::V2_0::IEffect;
-using ::android::hardware::audio::effect::V2_0::IEffectBufferProviderCallback;
-using ::android::hardware::audio::effect::V2_0::IVisualizerEffect;
-using ::android::hardware::audio::effect::V2_0::Result;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::hidl_string;
-using ::android::sp;
-
-struct VisualizerEffect : public IVisualizerEffect {
-    explicit VisualizerEffect(effect_handle_t handle);
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IEffect follow.
-    Return<Result> init()  override;
-    Return<Result> setConfig(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> reset()  override;
-    Return<Result> enable()  override;
-    Return<Result> disable()  override;
-    Return<Result> setDevice(AudioDevice device)  override;
-    Return<void> setAndGetVolume(
-            const hidl_vec<uint32_t>& volumes, setAndGetVolume_cb _hidl_cb)  override;
-    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes)  override;
-    Return<Result> setAudioMode(AudioMode mode)  override;
-    Return<Result> setConfigReverse(
-            const EffectConfig& config,
-            const sp<IEffectBufferProviderCallback>& inputBufferProvider,
-            const sp<IEffectBufferProviderCallback>& outputBufferProvider)  override;
-    Return<Result> setInputDevice(AudioDevice device)  override;
-    Return<void> getConfig(getConfig_cb _hidl_cb)  override;
-    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb)  override;
-    Return<void> getSupportedAuxChannelsConfigs(
-            uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb)  override;
-    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb)  override;
-    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config)  override;
-    Return<Result> setAudioSource(AudioSource source)  override;
-    Return<Result> offload(const EffectOffloadParameter& param)  override;
-    Return<void> getDescriptor(getDescriptor_cb _hidl_cb)  override;
-    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb)  override;
-    Return<Result> setProcessBuffers(
-            const AudioBuffer& inBuffer, const AudioBuffer& outBuffer)  override;
-    Return<void> command(
-            uint32_t commandId,
-            const hidl_vec<uint8_t>& data,
-            uint32_t resultMaxSize,
-            command_cb _hidl_cb)  override;
-    Return<Result> setParameter(
-            const hidl_vec<uint8_t>& parameter, const hidl_vec<uint8_t>& value)  override;
-    Return<void> getParameter(
-            const hidl_vec<uint8_t>& parameter,
-            uint32_t valueMaxSize,
-            getParameter_cb _hidl_cb)  override;
-    Return<void> getSupportedConfigsForFeature(
-            uint32_t featureId,
-            uint32_t maxConfigs,
-            uint32_t configSize,
-            getSupportedConfigsForFeature_cb _hidl_cb)  override;
-    Return<void> getCurrentConfigForFeature(
-            uint32_t featureId,
-            uint32_t configSize,
-            getCurrentConfigForFeature_cb _hidl_cb)  override;
-    Return<Result> setCurrentConfigForFeature(
-            uint32_t featureId, const hidl_vec<uint8_t>& configData)  override;
-    Return<Result> close()  override;
-
-    // Methods from ::android::hardware::audio::effect::V2_0::IVisualizerEffect follow.
-    Return<Result> setCaptureSize(uint16_t captureSize)  override;
-    Return<void> getCaptureSize(getCaptureSize_cb _hidl_cb)  override;
-    Return<Result> setScalingMode(IVisualizerEffect::ScalingMode scalingMode)  override;
-    Return<void> getScalingMode(getScalingMode_cb _hidl_cb)  override;
-    Return<Result> setLatency(uint32_t latencyMs)  override;
-    Return<void> getLatency(getLatency_cb _hidl_cb)  override;
-    Return<Result> setMeasurementMode(IVisualizerEffect::MeasurementMode measurementMode)  override;
-    Return<void> getMeasurementMode(getMeasurementMode_cb _hidl_cb)  override;
-    Return<void> capture(capture_cb _hidl_cb)  override;
-    Return<void> measure(measure_cb _hidl_cb)  override;
-
-  private:
-    sp<Effect> mEffect;
-    uint16_t mCaptureSize;
-    MeasurementMode mMeasurementMode;
-
-    virtual ~VisualizerEffect();
-};
-
-}  // namespace implementation
-}  // namespace V2_0
-}  // namespace effect
-}  // namespace audio
-}  // namespace hardware
-}  // namespace android
+#define AUDIO_HAL_VERSION V2_0
+#include <effect/all-versions/default/VisualizerEffect.h>
+#undef AUDIO_HAL_VERSION
 
 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_V2_0_VISUALIZEREFFECT_H
diff --git a/audio/2.0/default/OWNERS b/audio/effect/all-versions/OWNERS
similarity index 100%
rename from audio/2.0/default/OWNERS
rename to audio/effect/all-versions/OWNERS
diff --git a/audio/effect/all-versions/default/Android.bp b/audio/effect/all-versions/default/Android.bp
new file mode 100644
index 0000000..ed2a093
--- /dev/null
+++ b/audio/effect/all-versions/default/Android.bp
@@ -0,0 +1,31 @@
+cc_library_headers {
+    name: "android.hardware.audio.effect@all-versions-impl",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+
+    export_include_dirs: ["include"],
+
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libeffects",
+        "libfmq",
+        "libhidlbase",
+        "libhidlmemory",
+        "libhidltransport",
+        "liblog",
+        "libutils",
+        "android.hardware.audio.common-util",
+        "android.hidl.memory@1.0",
+    ],
+
+    header_libs: [
+        "libaudio_system_headers",
+        "libaudioclient_headers",
+        "libeffects_headers",
+        "libhardware_headers",
+        "libmedia_headers",
+        "android.hardware.audio.common.util@all-versions",
+    ],
+}
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/AcousticEchoCancelerEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/AcousticEchoCancelerEffect.h
new file mode 100644
index 0000000..b63f2fb
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/AcousticEchoCancelerEffect.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IAcousticEchoCancelerEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct AcousticEchoCancelerEffect : public IAcousticEchoCancelerEffect {
+    explicit AcousticEchoCancelerEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from
+    // ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IAcousticEchoCancelerEffect follow.
+    Return<Result> setEchoDelay(uint32_t echoDelayMs) override;
+    Return<void> getEchoDelay(getEchoDelay_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~AcousticEchoCancelerEffect();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/AcousticEchoCancelerEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/AcousticEchoCancelerEffect.impl.h
new file mode 100644
index 0000000..bee3607
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/AcousticEchoCancelerEffect.impl.h
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+#include <system/audio_effects/effect_aec.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+AcousticEchoCancelerEffect::AcousticEchoCancelerEffect(effect_handle_t handle)
+    : mEffect(new Effect(handle)) {}
+
+AcousticEchoCancelerEffect::~AcousticEchoCancelerEffect() {}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> AcousticEchoCancelerEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> AcousticEchoCancelerEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> AcousticEchoCancelerEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> AcousticEchoCancelerEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> AcousticEchoCancelerEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> AcousticEchoCancelerEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> AcousticEchoCancelerEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                                         setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> AcousticEchoCancelerEffect::volumeChangeNotification(
+    const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> AcousticEchoCancelerEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> AcousticEchoCancelerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> AcousticEchoCancelerEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> AcousticEchoCancelerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setAuxChannelsConfig(
+    const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> AcousticEchoCancelerEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> AcousticEchoCancelerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> AcousticEchoCancelerEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                             const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> AcousticEchoCancelerEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                                 uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                                        const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> AcousticEchoCancelerEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                                      uint32_t valueMaxSize,
+                                                      getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> AcousticEchoCancelerEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> AcousticEchoCancelerEffect::getCurrentConfigForFeature(
+    uint32_t featureId, uint32_t configSize, getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> AcousticEchoCancelerEffect::setCurrentConfigForFeature(
+    uint32_t featureId, const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> AcousticEchoCancelerEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IAcousticEchoCancelerEffect
+// follow.
+Return<Result> AcousticEchoCancelerEffect::setEchoDelay(uint32_t echoDelayMs) {
+    return mEffect->setParam(AEC_PARAM_ECHO_DELAY, echoDelayMs);
+}
+
+Return<void> AcousticEchoCancelerEffect::getEchoDelay(getEchoDelay_cb _hidl_cb) {
+    return mEffect->getIntegerParam(AEC_PARAM_ECHO_DELAY, _hidl_cb);
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/AudioBufferManager.h b/audio/effect/all-versions/default/include/effect/all-versions/default/AudioBufferManager.h
new file mode 100644
index 0000000..34dea2d
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/AudioBufferManager.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2017 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 <common/all-versions/IncludeGuard.h>
+
+#include <mutex>
+
+#include <android/hidl/memory/1.0/IMemory.h>
+#include <system/audio_effect.h>
+#include <utils/KeyedVector.h>
+#include <utils/RefBase.h>
+#include <utils/Singleton.h>
+
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hidl::memory::V1_0::IMemory;
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+class AudioBufferWrapper : public RefBase {
+   public:
+    explicit AudioBufferWrapper(const AudioBuffer& buffer);
+    virtual ~AudioBufferWrapper();
+    bool init();
+    audio_buffer_t* getHalBuffer() { return &mHalBuffer; }
+
+   private:
+    AudioBufferWrapper(const AudioBufferWrapper&) = delete;
+    void operator=(AudioBufferWrapper) = delete;
+
+    AudioBuffer mHidlBuffer;
+    sp<IMemory> mHidlMemory;
+    audio_buffer_t mHalBuffer;
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::implementation::AudioBufferWrapper;
+
+namespace android {
+
+// This class needs to be in 'android' ns because Singleton macros require that.
+class AudioBufferManager : public Singleton<AudioBufferManager> {
+   public:
+    bool wrap(const AudioBuffer& buffer, sp<AudioBufferWrapper>* wrapper);
+
+   private:
+    friend class hardware::audio::effect::AUDIO_HAL_VERSION::implementation::AudioBufferWrapper;
+
+    // Called by AudioBufferWrapper.
+    void removeEntry(uint64_t id);
+
+    std::mutex mLock;
+    KeyedVector<uint64_t, wp<AudioBufferWrapper>> mBuffers;
+};
+
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/AudioBufferManager.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/AudioBufferManager.impl.h
new file mode 100644
index 0000000..71ccd2d
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/AudioBufferManager.impl.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2017 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 <common/all-versions/IncludeGuard.h>
+
+#include <atomic>
+
+#include <hidlmemory/mapping.h>
+
+namespace android {
+
+ANDROID_SINGLETON_STATIC_INSTANCE(AudioBufferManager);
+
+bool AudioBufferManager::wrap(const AudioBuffer& buffer, sp<AudioBufferWrapper>* wrapper) {
+    // Check if we have this buffer already
+    std::lock_guard<std::mutex> lock(mLock);
+    ssize_t idx = mBuffers.indexOfKey(buffer.id);
+    if (idx >= 0) {
+        *wrapper = mBuffers[idx].promote();
+        if (*wrapper != nullptr) {
+            (*wrapper)->getHalBuffer()->frameCount = buffer.frameCount;
+            return true;
+        }
+        mBuffers.removeItemsAt(idx);
+    }
+    // Need to create and init a new AudioBufferWrapper.
+    sp<AudioBufferWrapper> tempBuffer(new AudioBufferWrapper(buffer));
+    if (!tempBuffer->init()) return false;
+    *wrapper = tempBuffer;
+    mBuffers.add(buffer.id, *wrapper);
+    return true;
+}
+
+void AudioBufferManager::removeEntry(uint64_t id) {
+    std::lock_guard<std::mutex> lock(mLock);
+    ssize_t idx = mBuffers.indexOfKey(id);
+    if (idx >= 0) mBuffers.removeItemsAt(idx);
+}
+
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+AudioBufferWrapper::AudioBufferWrapper(const AudioBuffer& buffer)
+    : mHidlBuffer(buffer), mHalBuffer{0, {nullptr}} {}
+
+AudioBufferWrapper::~AudioBufferWrapper() {
+    AudioBufferManager::getInstance().removeEntry(mHidlBuffer.id);
+}
+
+bool AudioBufferWrapper::init() {
+    if (mHalBuffer.raw != nullptr) {
+        ALOGE("An attempt to init AudioBufferWrapper twice");
+        return false;
+    }
+    mHidlMemory = mapMemory(mHidlBuffer.data);
+    if (mHidlMemory == nullptr) {
+        ALOGE("Could not map HIDL memory to IMemory");
+        return false;
+    }
+    mHalBuffer.raw = static_cast<void*>(mHidlMemory->getPointer());
+    if (mHalBuffer.raw == nullptr) {
+        ALOGE("IMemory buffer pointer is null");
+        return false;
+    }
+    mHalBuffer.frameCount = mHidlBuffer.frameCount;
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/AutomaticGainControlEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/AutomaticGainControlEffect.h
new file mode 100644
index 0000000..941f45d
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/AutomaticGainControlEffect.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <system/audio_effects/effect_agc.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IAutomaticGainControlEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct AutomaticGainControlEffect : public IAutomaticGainControlEffect {
+    explicit AutomaticGainControlEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from
+    // ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IAutomaticGainControlEffect follow.
+    Return<Result> setTargetLevel(int16_t targetLevelMb) override;
+    Return<void> getTargetLevel(getTargetLevel_cb _hidl_cb) override;
+    Return<Result> setCompGain(int16_t compGainMb) override;
+    Return<void> getCompGain(getCompGain_cb _hidl_cb) override;
+    Return<Result> setLimiterEnabled(bool enabled) override;
+    Return<void> isLimiterEnabled(isLimiterEnabled_cb _hidl_cb) override;
+    Return<Result> setAllProperties(
+        const IAutomaticGainControlEffect::AllProperties& properties) override;
+    Return<void> getAllProperties(getAllProperties_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~AutomaticGainControlEffect();
+
+    void propertiesFromHal(const t_agc_settings& halProperties,
+                           IAutomaticGainControlEffect::AllProperties* properties);
+    void propertiesToHal(const IAutomaticGainControlEffect::AllProperties& properties,
+                         t_agc_settings* halProperties);
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/AutomaticGainControlEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/AutomaticGainControlEffect.impl.h
new file mode 100644
index 0000000..af05d9b
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/AutomaticGainControlEffect.impl.h
@@ -0,0 +1,224 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+AutomaticGainControlEffect::AutomaticGainControlEffect(effect_handle_t handle)
+    : mEffect(new Effect(handle)) {}
+
+AutomaticGainControlEffect::~AutomaticGainControlEffect() {}
+
+void AutomaticGainControlEffect::propertiesFromHal(
+    const t_agc_settings& halProperties, IAutomaticGainControlEffect::AllProperties* properties) {
+    properties->targetLevelMb = halProperties.targetLevel;
+    properties->compGainMb = halProperties.compGain;
+    properties->limiterEnabled = halProperties.limiterEnabled;
+}
+
+void AutomaticGainControlEffect::propertiesToHal(
+    const IAutomaticGainControlEffect::AllProperties& properties, t_agc_settings* halProperties) {
+    halProperties->targetLevel = properties.targetLevelMb;
+    halProperties->compGain = properties.compGainMb;
+    halProperties->limiterEnabled = properties.limiterEnabled;
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> AutomaticGainControlEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> AutomaticGainControlEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> AutomaticGainControlEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> AutomaticGainControlEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> AutomaticGainControlEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> AutomaticGainControlEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> AutomaticGainControlEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                                         setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::volumeChangeNotification(
+    const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> AutomaticGainControlEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> AutomaticGainControlEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> AutomaticGainControlEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> AutomaticGainControlEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> AutomaticGainControlEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> AutomaticGainControlEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> AutomaticGainControlEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::setAuxChannelsConfig(
+    const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> AutomaticGainControlEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> AutomaticGainControlEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> AutomaticGainControlEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> AutomaticGainControlEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                             const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> AutomaticGainControlEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                                 uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                                        const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> AutomaticGainControlEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                                      uint32_t valueMaxSize,
+                                                      getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> AutomaticGainControlEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> AutomaticGainControlEffect::getCurrentConfigForFeature(
+    uint32_t featureId, uint32_t configSize, getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::setCurrentConfigForFeature(
+    uint32_t featureId, const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> AutomaticGainControlEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IAutomaticGainControlEffect
+// follow.
+Return<Result> AutomaticGainControlEffect::setTargetLevel(int16_t targetLevelMb) {
+    return mEffect->setParam(AGC_PARAM_TARGET_LEVEL, targetLevelMb);
+}
+
+Return<void> AutomaticGainControlEffect::getTargetLevel(getTargetLevel_cb _hidl_cb) {
+    return mEffect->getIntegerParam(AGC_PARAM_TARGET_LEVEL, _hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::setCompGain(int16_t compGainMb) {
+    return mEffect->setParam(AGC_PARAM_COMP_GAIN, compGainMb);
+}
+
+Return<void> AutomaticGainControlEffect::getCompGain(getCompGain_cb _hidl_cb) {
+    return mEffect->getIntegerParam(AGC_PARAM_COMP_GAIN, _hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::setLimiterEnabled(bool enabled) {
+    return mEffect->setParam(AGC_PARAM_LIMITER_ENA, enabled);
+}
+
+Return<void> AutomaticGainControlEffect::isLimiterEnabled(isLimiterEnabled_cb _hidl_cb) {
+    return mEffect->getIntegerParam(AGC_PARAM_LIMITER_ENA, _hidl_cb);
+}
+
+Return<Result> AutomaticGainControlEffect::setAllProperties(
+    const IAutomaticGainControlEffect::AllProperties& properties) {
+    t_agc_settings halProperties;
+    propertiesToHal(properties, &halProperties);
+    return mEffect->setParam(AGC_PARAM_PROPERTIES, halProperties);
+}
+
+Return<void> AutomaticGainControlEffect::getAllProperties(getAllProperties_cb _hidl_cb) {
+    t_agc_settings halProperties;
+    Result retval = mEffect->getParam(AGC_PARAM_PROPERTIES, halProperties);
+    AllProperties properties;
+    propertiesFromHal(halProperties, &properties);
+    _hidl_cb(retval, properties);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/BassBoostEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/BassBoostEffect.h
new file mode 100644
index 0000000..0092621
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/BassBoostEffect.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IBassBoostEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct BassBoostEffect : public IBassBoostEffect {
+    explicit BassBoostEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IBassBoostEffect follow.
+    Return<void> isStrengthSupported(isStrengthSupported_cb _hidl_cb) override;
+    Return<Result> setStrength(uint16_t strength) override;
+    Return<void> getStrength(getStrength_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~BassBoostEffect();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/BassBoostEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/BassBoostEffect.impl.h
new file mode 100644
index 0000000..1fc8d1b
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/BassBoostEffect.impl.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+#include <system/audio_effects/effect_bassboost.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+BassBoostEffect::BassBoostEffect(effect_handle_t handle) : mEffect(new Effect(handle)) {}
+
+BassBoostEffect::~BassBoostEffect() {}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> BassBoostEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> BassBoostEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> BassBoostEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> BassBoostEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> BassBoostEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> BassBoostEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> BassBoostEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                              setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> BassBoostEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> BassBoostEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> BassBoostEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> BassBoostEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> BassBoostEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> BassBoostEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> BassBoostEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> BassBoostEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> BassBoostEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> BassBoostEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> BassBoostEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> BassBoostEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> BassBoostEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> BassBoostEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                  const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> BassBoostEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                      uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> BassBoostEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                             const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> BassBoostEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                           uint32_t valueMaxSize, getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> BassBoostEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> BassBoostEffect::getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                                         getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> BassBoostEffect::setCurrentConfigForFeature(uint32_t featureId,
+                                                           const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> BassBoostEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IBassBoostEffect follow.
+Return<void> BassBoostEffect::isStrengthSupported(isStrengthSupported_cb _hidl_cb) {
+    return mEffect->getIntegerParam(BASSBOOST_PARAM_STRENGTH_SUPPORTED, _hidl_cb);
+}
+
+Return<Result> BassBoostEffect::setStrength(uint16_t strength) {
+    return mEffect->setParam(BASSBOOST_PARAM_STRENGTH, strength);
+}
+
+Return<void> BassBoostEffect::getStrength(getStrength_cb _hidl_cb) {
+    return mEffect->getIntegerParam(BASSBOOST_PARAM_STRENGTH, _hidl_cb);
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/Conversions.h b/audio/effect/all-versions/default/include/effect/all-versions/default/Conversions.h
similarity index 64%
copy from audio/2.0/default/Conversions.h
copy to audio/effect/all-versions/default/include/effect/all-versions/default/Conversions.h
index ebda5c5..3f9317f 100644
--- a/audio/2.0/default/Conversions.h
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/Conversions.h
@@ -14,28 +14,28 @@
  * limitations under the License.
  */
 
-#ifndef android_hardware_audio_V2_0_Conversions_H_
-#define android_hardware_audio_V2_0_Conversions_H_
+#include <common/all-versions/IncludeGuard.h>
 
 #include <string>
 
-#include <android/hardware/audio/2.0/types.h>
-#include <system/audio.h>
+#include <system/audio_effect.h>
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace V2_0 {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
-using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
 
-std::string deviceAddressToHal(const DeviceAddress& address);
+void effectDescriptorFromHal(const effect_descriptor_t& halDescriptor,
+                             EffectDescriptor* descriptor);
+std::string uuidToString(const effect_uuid_t& halUuid);
 
 }  // namespace implementation
-}  // namespace V2_0
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
-
-#endif  // android_hardware_audio_V2_0_Conversions_H_
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/Conversions.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/Conversions.impl.h
new file mode 100644
index 0000000..44adf4b
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/Conversions.impl.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <memory.h>
+#include <stdio.h>
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::HidlUtils;
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+void effectDescriptorFromHal(const effect_descriptor_t& halDescriptor,
+                             EffectDescriptor* descriptor) {
+    HidlUtils::uuidFromHal(halDescriptor.type, &descriptor->type);
+    HidlUtils::uuidFromHal(halDescriptor.uuid, &descriptor->uuid);
+    descriptor->flags = EffectFlags(halDescriptor.flags);
+    descriptor->cpuLoad = halDescriptor.cpuLoad;
+    descriptor->memoryUsage = halDescriptor.memoryUsage;
+    memcpy(descriptor->name.data(), halDescriptor.name, descriptor->name.size());
+    memcpy(descriptor->implementor.data(), halDescriptor.implementor,
+           descriptor->implementor.size());
+}
+
+std::string uuidToString(const effect_uuid_t& halUuid) {
+    char str[64];
+    snprintf(str, sizeof(str), "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x", halUuid.timeLow,
+             halUuid.timeMid, halUuid.timeHiAndVersion, halUuid.clockSeq, halUuid.node[0],
+             halUuid.node[1], halUuid.node[2], halUuid.node[3], halUuid.node[4], halUuid.node[5]);
+    return str;
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/DownmixEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/DownmixEffect.h
new file mode 100644
index 0000000..e461ca8
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/DownmixEffect.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IDownmixEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct DownmixEffect : public IDownmixEffect {
+    explicit DownmixEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IDownmixEffect follow.
+    Return<Result> setType(IDownmixEffect::Type preset) override;
+    Return<void> getType(getType_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~DownmixEffect();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/DownmixEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/DownmixEffect.impl.h
new file mode 100644
index 0000000..98710f8
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/DownmixEffect.impl.h
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+#include <system/audio_effects/effect_downmix.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+DownmixEffect::DownmixEffect(effect_handle_t handle) : mEffect(new Effect(handle)) {}
+
+DownmixEffect::~DownmixEffect() {}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> DownmixEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> DownmixEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> DownmixEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> DownmixEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> DownmixEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> DownmixEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> DownmixEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                            setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> DownmixEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> DownmixEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> DownmixEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> DownmixEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> DownmixEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> DownmixEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> DownmixEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> DownmixEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> DownmixEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> DownmixEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> DownmixEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> DownmixEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> DownmixEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> DownmixEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> DownmixEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                    uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> DownmixEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                           const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> DownmixEffect::getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                                         getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> DownmixEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> DownmixEffect::getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                                       getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> DownmixEffect::setCurrentConfigForFeature(uint32_t featureId,
+                                                         const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> DownmixEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IDownmixEffect follow.
+Return<Result> DownmixEffect::setType(IDownmixEffect::Type preset) {
+    return mEffect->setParam(DOWNMIX_PARAM_TYPE, static_cast<downmix_type_t>(preset));
+}
+
+Return<void> DownmixEffect::getType(getType_cb _hidl_cb) {
+    downmix_type_t halPreset = DOWNMIX_TYPE_INVALID;
+    Result retval = mEffect->getParam(DOWNMIX_PARAM_TYPE, halPreset);
+    _hidl_cb(retval, Type(halPreset));
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/Effect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/Effect.h
new file mode 100644
index 0000000..81b0b24
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/Effect.h
@@ -0,0 +1,238 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <atomic>
+#include <memory>
+#include <vector>
+
+#include <fmq/EventFlag.h>
+#include <fmq/MessageQueue.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <utils/Thread.h>
+
+#include <hardware/audio_effect.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::Uuid;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectFeature;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Effect : public IEffect {
+    typedef MessageQueue<Result, kSynchronizedReadWrite> StatusMQ;
+    using GetParameterSuccessCallback =
+        std::function<void(uint32_t valueSize, const void* valueData)>;
+
+    explicit Effect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Utility methods for extending interfaces.
+    template <typename T>
+    Return<void> getIntegerParam(uint32_t paramId,
+                                 std::function<void(Result retval, T paramValue)> cb) {
+        T value;
+        Result retval = getParameterImpl(sizeof(uint32_t), &paramId, sizeof(T),
+                                         [&](uint32_t valueSize, const void* valueData) {
+                                             if (valueSize > sizeof(T)) valueSize = sizeof(T);
+                                             memcpy(&value, valueData, valueSize);
+                                         });
+        cb(retval, value);
+        return Void();
+    }
+
+    template <typename T>
+    Result getParam(uint32_t paramId, T& paramValue) {
+        return getParameterImpl(sizeof(uint32_t), &paramId, sizeof(T),
+                                [&](uint32_t valueSize, const void* valueData) {
+                                    if (valueSize > sizeof(T)) valueSize = sizeof(T);
+                                    memcpy(&paramValue, valueData, valueSize);
+                                });
+    }
+
+    template <typename T>
+    Result getParam(uint32_t paramId, uint32_t paramArg, T& paramValue) {
+        uint32_t params[2] = {paramId, paramArg};
+        return getParameterImpl(sizeof(params), params, sizeof(T),
+                                [&](uint32_t valueSize, const void* valueData) {
+                                    if (valueSize > sizeof(T)) valueSize = sizeof(T);
+                                    memcpy(&paramValue, valueData, valueSize);
+                                });
+    }
+
+    template <typename T>
+    Result setParam(uint32_t paramId, const T& paramValue) {
+        return setParameterImpl(sizeof(uint32_t), &paramId, sizeof(T), &paramValue);
+    }
+
+    template <typename T>
+    Result setParam(uint32_t paramId, uint32_t paramArg, const T& paramValue) {
+        uint32_t params[2] = {paramId, paramArg};
+        return setParameterImpl(sizeof(params), params, sizeof(T), &paramValue);
+    }
+
+    Result getParameterImpl(uint32_t paramSize, const void* paramData, uint32_t valueSize,
+                            GetParameterSuccessCallback onSuccess) {
+        return getParameterImpl(paramSize, paramData, valueSize, valueSize, onSuccess);
+    }
+    Result getParameterImpl(uint32_t paramSize, const void* paramData, uint32_t requestValueSize,
+                            uint32_t replyValueSize, GetParameterSuccessCallback onSuccess);
+    Result setParameterImpl(uint32_t paramSize, const void* paramData, uint32_t valueSize,
+                            const void* valueData);
+
+   private:
+    friend struct VirtualizerEffect;  // for getParameterImpl
+    friend struct VisualizerEffect;   // to allow executing commands
+
+    using CommandSuccessCallback = std::function<void()>;
+    using GetConfigCallback = std::function<void(Result retval, const EffectConfig& config)>;
+    using GetCurrentConfigSuccessCallback = std::function<void(void* configData)>;
+    using GetSupportedConfigsSuccessCallback =
+        std::function<void(uint32_t supportedConfigs, void* configsData)>;
+
+    static const char* sContextResultOfCommand;
+    static const char* sContextCallToCommand;
+    static const char* sContextCallFunction;
+
+    bool mIsClosed;
+    effect_handle_t mHandle;
+    sp<AudioBufferWrapper> mInBuffer;
+    sp<AudioBufferWrapper> mOutBuffer;
+    std::atomic<audio_buffer_t*> mHalInBufferPtr;
+    std::atomic<audio_buffer_t*> mHalOutBufferPtr;
+    std::unique_ptr<StatusMQ> mStatusMQ;
+    EventFlag* mEfGroup;
+    std::atomic<bool> mStopProcessThread;
+    sp<Thread> mProcessThread;
+
+    virtual ~Effect();
+
+    template <typename T>
+    static size_t alignedSizeIn(size_t s);
+    template <typename T>
+    std::unique_ptr<uint8_t[]> hidlVecToHal(const hidl_vec<T>& vec, uint32_t* halDataSize);
+    static void effectAuxChannelsConfigFromHal(const channel_config_t& halConfig,
+                                               EffectAuxChannelsConfig* config);
+    static void effectAuxChannelsConfigToHal(const EffectAuxChannelsConfig& config,
+                                             channel_config_t* halConfig);
+    static void effectBufferConfigFromHal(const buffer_config_t& halConfig,
+                                          EffectBufferConfig* config);
+    static void effectBufferConfigToHal(const EffectBufferConfig& config,
+                                        buffer_config_t* halConfig);
+    static void effectConfigFromHal(const effect_config_t& halConfig, EffectConfig* config);
+    static void effectConfigToHal(const EffectConfig& config, effect_config_t* halConfig);
+    static void effectOffloadParamToHal(const EffectOffloadParameter& offload,
+                                        effect_offload_param_t* halOffload);
+    static std::vector<uint8_t> parameterToHal(uint32_t paramSize, const void* paramData,
+                                               uint32_t valueSize, const void** valueData);
+
+    Result analyzeCommandStatus(const char* commandName, const char* context, status_t status);
+    Result analyzeStatus(const char* funcName, const char* subFuncName,
+                         const char* contextDescription, status_t status);
+    void getConfigImpl(int commandCode, const char* commandName, GetConfigCallback cb);
+    Result getCurrentConfigImpl(uint32_t featureId, uint32_t configSize,
+                                GetCurrentConfigSuccessCallback onSuccess);
+    Result getSupportedConfigsImpl(uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+                                   GetSupportedConfigsSuccessCallback onSuccess);
+    Result sendCommand(int commandCode, const char* commandName);
+    Result sendCommand(int commandCode, const char* commandName, uint32_t size, void* data);
+    Result sendCommandReturningData(int commandCode, const char* commandName, uint32_t* replySize,
+                                    void* replyData);
+    Result sendCommandReturningData(int commandCode, const char* commandName, uint32_t size,
+                                    void* data, uint32_t* replySize, void* replyData);
+    Result sendCommandReturningStatus(int commandCode, const char* commandName);
+    Result sendCommandReturningStatus(int commandCode, const char* commandName, uint32_t size,
+                                      void* data);
+    Result sendCommandReturningStatusAndData(int commandCode, const char* commandName,
+                                             uint32_t size, void* data, uint32_t* replySize,
+                                             void* replyData, uint32_t minReplySize,
+                                             CommandSuccessCallback onSuccess);
+    Result setConfigImpl(int commandCode, const char* commandName, const EffectConfig& config,
+                         const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+                         const sp<IEffectBufferProviderCallback>& outputBufferProvider);
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/Effect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/Effect.impl.h
new file mode 100644
index 0000000..d376146
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/Effect.impl.h
@@ -0,0 +1,711 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <memory.h>
+
+#define ATRACE_TAG ATRACE_TAG_AUDIO
+
+#include <android/log.h>
+#include <media/EffectsFactoryApi.h>
+#include <utils/Trace.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioChannelMask;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioFormat;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::MessageQueueFlagBits;
+
+namespace {
+
+class ProcessThread : public Thread {
+   public:
+    // ProcessThread's lifespan never exceeds Effect's lifespan.
+    ProcessThread(std::atomic<bool>* stop, effect_handle_t effect,
+                  std::atomic<audio_buffer_t*>* inBuffer, std::atomic<audio_buffer_t*>* outBuffer,
+                  Effect::StatusMQ* statusMQ, EventFlag* efGroup)
+        : Thread(false /*canCallJava*/),
+          mStop(stop),
+          mEffect(effect),
+          mHasProcessReverse((*mEffect)->process_reverse != NULL),
+          mInBuffer(inBuffer),
+          mOutBuffer(outBuffer),
+          mStatusMQ(statusMQ),
+          mEfGroup(efGroup) {}
+    virtual ~ProcessThread() {}
+
+   private:
+    std::atomic<bool>* mStop;
+    effect_handle_t mEffect;
+    bool mHasProcessReverse;
+    std::atomic<audio_buffer_t*>* mInBuffer;
+    std::atomic<audio_buffer_t*>* mOutBuffer;
+    Effect::StatusMQ* mStatusMQ;
+    EventFlag* mEfGroup;
+
+    bool threadLoop() override;
+};
+
+bool ProcessThread::threadLoop() {
+    // This implementation doesn't return control back to the Thread until it decides to stop,
+    // as the Thread uses mutexes, and this can lead to priority inversion.
+    while (!std::atomic_load_explicit(mStop, std::memory_order_acquire)) {
+        uint32_t efState = 0;
+        mEfGroup->wait(static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS_ALL), &efState);
+        if (!(efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS_ALL)) ||
+            (efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_QUIT))) {
+            continue;  // Nothing to do or time to quit.
+        }
+        Result retval = Result::OK;
+        if (efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS_REVERSE) &&
+            !mHasProcessReverse) {
+            retval = Result::NOT_SUPPORTED;
+        }
+
+        if (retval == Result::OK) {
+            // affects both buffer pointers and their contents.
+            std::atomic_thread_fence(std::memory_order_acquire);
+            int32_t processResult;
+            audio_buffer_t* inBuffer =
+                std::atomic_load_explicit(mInBuffer, std::memory_order_relaxed);
+            audio_buffer_t* outBuffer =
+                std::atomic_load_explicit(mOutBuffer, std::memory_order_relaxed);
+            if (inBuffer != nullptr && outBuffer != nullptr) {
+                if (efState & static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_PROCESS)) {
+                    processResult = (*mEffect)->process(mEffect, inBuffer, outBuffer);
+                } else {
+                    processResult = (*mEffect)->process_reverse(mEffect, inBuffer, outBuffer);
+                }
+                std::atomic_thread_fence(std::memory_order_release);
+            } else {
+                ALOGE("processing buffers were not set before calling 'process'");
+                processResult = -ENODEV;
+            }
+            switch (processResult) {
+                case 0:
+                    retval = Result::OK;
+                    break;
+                case -ENODATA:
+                    retval = Result::INVALID_STATE;
+                    break;
+                case -EINVAL:
+                    retval = Result::INVALID_ARGUMENTS;
+                    break;
+                default:
+                    retval = Result::NOT_INITIALIZED;
+            }
+        }
+        if (!mStatusMQ->write(&retval)) {
+            ALOGW("status message queue write failed");
+        }
+        mEfGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::DONE_PROCESSING));
+    }
+
+    return false;
+}
+
+}  // namespace
+
+// static
+const char* Effect::sContextResultOfCommand = "returned status";
+const char* Effect::sContextCallToCommand = "error";
+const char* Effect::sContextCallFunction = sContextCallToCommand;
+
+Effect::Effect(effect_handle_t handle)
+    : mIsClosed(false), mHandle(handle), mEfGroup(nullptr), mStopProcessThread(false) {}
+
+Effect::~Effect() {
+    ATRACE_CALL();
+    close();
+    if (mProcessThread.get()) {
+        ATRACE_NAME("mProcessThread->join");
+        status_t status = mProcessThread->join();
+        ALOGE_IF(status, "processing thread exit error: %s", strerror(-status));
+    }
+    if (mEfGroup) {
+        status_t status = EventFlag::deleteEventFlag(&mEfGroup);
+        ALOGE_IF(status, "processing MQ event flag deletion error: %s", strerror(-status));
+    }
+    mInBuffer.clear();
+    mOutBuffer.clear();
+    int status = EffectRelease(mHandle);
+    ALOGW_IF(status, "Error releasing effect %p: %s", mHandle, strerror(-status));
+    EffectMap::getInstance().remove(mHandle);
+    mHandle = 0;
+}
+
+// static
+template <typename T>
+size_t Effect::alignedSizeIn(size_t s) {
+    return (s + sizeof(T) - 1) / sizeof(T);
+}
+
+// static
+template <typename T>
+std::unique_ptr<uint8_t[]> Effect::hidlVecToHal(const hidl_vec<T>& vec, uint32_t* halDataSize) {
+    // Due to bugs in HAL, they may attempt to write into the provided
+    // input buffer. The original binder buffer is r/o, thus it is needed
+    // to create a r/w version.
+    *halDataSize = vec.size() * sizeof(T);
+    std::unique_ptr<uint8_t[]> halData(new uint8_t[*halDataSize]);
+    memcpy(&halData[0], &vec[0], *halDataSize);
+    return halData;
+}
+
+// static
+void Effect::effectAuxChannelsConfigFromHal(const channel_config_t& halConfig,
+                                            EffectAuxChannelsConfig* config) {
+    config->mainChannels = AudioChannelMask(halConfig.main_channels);
+    config->auxChannels = AudioChannelMask(halConfig.aux_channels);
+}
+
+// static
+void Effect::effectAuxChannelsConfigToHal(const EffectAuxChannelsConfig& config,
+                                          channel_config_t* halConfig) {
+    halConfig->main_channels = static_cast<audio_channel_mask_t>(config.mainChannels);
+    halConfig->aux_channels = static_cast<audio_channel_mask_t>(config.auxChannels);
+}
+
+// static
+void Effect::effectBufferConfigFromHal(const buffer_config_t& halConfig,
+                                       EffectBufferConfig* config) {
+    config->buffer.id = 0;
+    config->buffer.frameCount = 0;
+    config->samplingRateHz = halConfig.samplingRate;
+    config->channels = AudioChannelMask(halConfig.channels);
+    config->format = AudioFormat(halConfig.format);
+    config->accessMode = EffectBufferAccess(halConfig.accessMode);
+    config->mask = EffectConfigParameters(halConfig.mask);
+}
+
+// static
+void Effect::effectBufferConfigToHal(const EffectBufferConfig& config, buffer_config_t* halConfig) {
+    // Note: setting the buffers directly is considered obsolete. They need to be set
+    // using 'setProcessBuffers'.
+    halConfig->buffer.frameCount = 0;
+    halConfig->buffer.raw = NULL;
+    halConfig->samplingRate = config.samplingRateHz;
+    halConfig->channels = static_cast<uint32_t>(config.channels);
+    // Note: The framework code does not use BP.
+    halConfig->bufferProvider.cookie = NULL;
+    halConfig->bufferProvider.getBuffer = NULL;
+    halConfig->bufferProvider.releaseBuffer = NULL;
+    halConfig->format = static_cast<uint8_t>(config.format);
+    halConfig->accessMode = static_cast<uint8_t>(config.accessMode);
+    halConfig->mask = static_cast<uint8_t>(config.mask);
+}
+
+// static
+void Effect::effectConfigFromHal(const effect_config_t& halConfig, EffectConfig* config) {
+    effectBufferConfigFromHal(halConfig.inputCfg, &config->inputCfg);
+    effectBufferConfigFromHal(halConfig.outputCfg, &config->outputCfg);
+}
+
+// static
+void Effect::effectConfigToHal(const EffectConfig& config, effect_config_t* halConfig) {
+    effectBufferConfigToHal(config.inputCfg, &halConfig->inputCfg);
+    effectBufferConfigToHal(config.outputCfg, &halConfig->outputCfg);
+}
+
+// static
+void Effect::effectOffloadParamToHal(const EffectOffloadParameter& offload,
+                                     effect_offload_param_t* halOffload) {
+    halOffload->isOffload = offload.isOffload;
+    halOffload->ioHandle = offload.ioHandle;
+}
+
+// static
+std::vector<uint8_t> Effect::parameterToHal(uint32_t paramSize, const void* paramData,
+                                            uint32_t valueSize, const void** valueData) {
+    size_t valueOffsetFromData = alignedSizeIn<uint32_t>(paramSize) * sizeof(uint32_t);
+    size_t halParamBufferSize = sizeof(effect_param_t) + valueOffsetFromData + valueSize;
+    std::vector<uint8_t> halParamBuffer(halParamBufferSize, 0);
+    effect_param_t* halParam = reinterpret_cast<effect_param_t*>(&halParamBuffer[0]);
+    halParam->psize = paramSize;
+    halParam->vsize = valueSize;
+    memcpy(halParam->data, paramData, paramSize);
+    if (valueData) {
+        if (*valueData) {
+            // Value data is provided.
+            memcpy(halParam->data + valueOffsetFromData, *valueData, valueSize);
+        } else {
+            // The caller needs the pointer to the value data location.
+            *valueData = halParam->data + valueOffsetFromData;
+        }
+    }
+    return halParamBuffer;
+}
+
+Result Effect::analyzeCommandStatus(const char* commandName, const char* context, status_t status) {
+    return analyzeStatus("command", commandName, context, status);
+}
+
+Result Effect::analyzeStatus(const char* funcName, const char* subFuncName,
+                             const char* contextDescription, status_t status) {
+    if (status != OK) {
+        ALOGW("Effect %p %s %s %s: %s", mHandle, funcName, subFuncName, contextDescription,
+              strerror(-status));
+    }
+    switch (status) {
+        case OK:
+            return Result::OK;
+        case -EINVAL:
+            return Result::INVALID_ARGUMENTS;
+        case -ENODATA:
+            return Result::INVALID_STATE;
+        case -ENODEV:
+            return Result::NOT_INITIALIZED;
+        case -ENOMEM:
+            return Result::RESULT_TOO_BIG;
+        case -ENOSYS:
+            return Result::NOT_SUPPORTED;
+        default:
+            return Result::INVALID_STATE;
+    }
+}
+
+void Effect::getConfigImpl(int commandCode, const char* commandName, GetConfigCallback cb) {
+    uint32_t halResultSize = sizeof(effect_config_t);
+    effect_config_t halConfig{};
+    status_t status =
+        (*mHandle)->command(mHandle, commandCode, 0, NULL, &halResultSize, &halConfig);
+    EffectConfig config;
+    if (status == OK) {
+        effectConfigFromHal(halConfig, &config);
+    }
+    cb(analyzeCommandStatus(commandName, sContextCallToCommand, status), config);
+}
+
+Result Effect::getCurrentConfigImpl(uint32_t featureId, uint32_t configSize,
+                                    GetCurrentConfigSuccessCallback onSuccess) {
+    uint32_t halCmd = featureId;
+    uint32_t halResult[alignedSizeIn<uint32_t>(sizeof(uint32_t) + configSize)];
+    memset(halResult, 0, sizeof(halResult));
+    uint32_t halResultSize = 0;
+    return sendCommandReturningStatusAndData(EFFECT_CMD_GET_FEATURE_CONFIG, "GET_FEATURE_CONFIG",
+                                             sizeof(uint32_t), &halCmd, &halResultSize, halResult,
+                                             sizeof(uint32_t), [&] { onSuccess(&halResult[1]); });
+}
+
+Result Effect::getParameterImpl(uint32_t paramSize, const void* paramData,
+                                uint32_t requestValueSize, uint32_t replyValueSize,
+                                GetParameterSuccessCallback onSuccess) {
+    // As it is unknown what method HAL uses for copying the provided parameter data,
+    // it is safer to make sure that input and output buffers do not overlap.
+    std::vector<uint8_t> halCmdBuffer =
+        parameterToHal(paramSize, paramData, requestValueSize, nullptr);
+    const void* valueData = nullptr;
+    std::vector<uint8_t> halParamBuffer =
+        parameterToHal(paramSize, paramData, replyValueSize, &valueData);
+    uint32_t halParamBufferSize = halParamBuffer.size();
+
+    return sendCommandReturningStatusAndData(
+        EFFECT_CMD_GET_PARAM, "GET_PARAM", halCmdBuffer.size(), &halCmdBuffer[0],
+        &halParamBufferSize, &halParamBuffer[0], sizeof(effect_param_t), [&] {
+            effect_param_t* halParam = reinterpret_cast<effect_param_t*>(&halParamBuffer[0]);
+            onSuccess(halParam->vsize, valueData);
+        });
+}
+
+Result Effect::getSupportedConfigsImpl(uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+                                       GetSupportedConfigsSuccessCallback onSuccess) {
+    uint32_t halCmd[2] = {featureId, maxConfigs};
+    uint32_t halResultSize = 2 * sizeof(uint32_t) + maxConfigs * sizeof(configSize);
+    uint8_t halResult[halResultSize];
+    memset(&halResult[0], 0, halResultSize);
+    return sendCommandReturningStatusAndData(
+        EFFECT_CMD_GET_FEATURE_SUPPORTED_CONFIGS, "GET_FEATURE_SUPPORTED_CONFIGS", sizeof(halCmd),
+        halCmd, &halResultSize, &halResult[0], 2 * sizeof(uint32_t), [&] {
+            uint32_t* halResult32 = reinterpret_cast<uint32_t*>(&halResult[0]);
+            uint32_t supportedConfigs = *(++halResult32);  // skip status field
+            if (supportedConfigs > maxConfigs) supportedConfigs = maxConfigs;
+            onSuccess(supportedConfigs, ++halResult32);
+        });
+}
+
+Return<void> Effect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    status_t status;
+    // Create message queue.
+    if (mStatusMQ) {
+        ALOGE("the client attempts to call prepareForProcessing_cb twice");
+        _hidl_cb(Result::INVALID_STATE, StatusMQ::Descriptor());
+        return Void();
+    }
+    std::unique_ptr<StatusMQ> tempStatusMQ(new StatusMQ(1, true /*EventFlag*/));
+    if (!tempStatusMQ->isValid()) {
+        ALOGE_IF(!tempStatusMQ->isValid(), "status MQ is invalid");
+        _hidl_cb(Result::INVALID_ARGUMENTS, StatusMQ::Descriptor());
+        return Void();
+    }
+    status = EventFlag::createEventFlag(tempStatusMQ->getEventFlagWord(), &mEfGroup);
+    if (status != OK || !mEfGroup) {
+        ALOGE("failed creating event flag for status MQ: %s", strerror(-status));
+        _hidl_cb(Result::INVALID_ARGUMENTS, StatusMQ::Descriptor());
+        return Void();
+    }
+
+    // Create and launch the thread.
+    mProcessThread = new ProcessThread(&mStopProcessThread, mHandle, &mHalInBufferPtr,
+                                       &mHalOutBufferPtr, tempStatusMQ.get(), mEfGroup);
+    status = mProcessThread->run("effect", PRIORITY_URGENT_AUDIO);
+    if (status != OK) {
+        ALOGW("failed to start effect processing thread: %s", strerror(-status));
+        _hidl_cb(Result::INVALID_ARGUMENTS, MQDescriptorSync<Result>());
+        return Void();
+    }
+
+    mStatusMQ = std::move(tempStatusMQ);
+    _hidl_cb(Result::OK, *mStatusMQ->getDesc());
+    return Void();
+}
+
+Return<Result> Effect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                         const AudioBuffer& outBuffer) {
+    AudioBufferManager& manager = AudioBufferManager::getInstance();
+    sp<AudioBufferWrapper> tempInBuffer, tempOutBuffer;
+    if (!manager.wrap(inBuffer, &tempInBuffer)) {
+        ALOGE("Could not map memory of the input buffer");
+        return Result::INVALID_ARGUMENTS;
+    }
+    if (!manager.wrap(outBuffer, &tempOutBuffer)) {
+        ALOGE("Could not map memory of the output buffer");
+        return Result::INVALID_ARGUMENTS;
+    }
+    mInBuffer = tempInBuffer;
+    mOutBuffer = tempOutBuffer;
+    // The processing thread only reads these pointers after waking up by an event flag,
+    // so it's OK to update the pair non-atomically.
+    mHalInBufferPtr.store(mInBuffer->getHalBuffer(), std::memory_order_release);
+    mHalOutBufferPtr.store(mOutBuffer->getHalBuffer(), std::memory_order_release);
+    return Result::OK;
+}
+
+Result Effect::sendCommand(int commandCode, const char* commandName) {
+    return sendCommand(commandCode, commandName, 0, NULL);
+}
+
+Result Effect::sendCommand(int commandCode, const char* commandName, uint32_t size, void* data) {
+    status_t status = (*mHandle)->command(mHandle, commandCode, size, data, 0, NULL);
+    return analyzeCommandStatus(commandName, sContextCallToCommand, status);
+}
+
+Result Effect::sendCommandReturningData(int commandCode, const char* commandName,
+                                        uint32_t* replySize, void* replyData) {
+    return sendCommandReturningData(commandCode, commandName, 0, NULL, replySize, replyData);
+}
+
+Result Effect::sendCommandReturningData(int commandCode, const char* commandName, uint32_t size,
+                                        void* data, uint32_t* replySize, void* replyData) {
+    uint32_t expectedReplySize = *replySize;
+    status_t status = (*mHandle)->command(mHandle, commandCode, size, data, replySize, replyData);
+    if (status == OK && *replySize != expectedReplySize) {
+        status = -ENODATA;
+    }
+    return analyzeCommandStatus(commandName, sContextCallToCommand, status);
+}
+
+Result Effect::sendCommandReturningStatus(int commandCode, const char* commandName) {
+    return sendCommandReturningStatus(commandCode, commandName, 0, NULL);
+}
+
+Result Effect::sendCommandReturningStatus(int commandCode, const char* commandName, uint32_t size,
+                                          void* data) {
+    uint32_t replyCmdStatus;
+    uint32_t replySize = sizeof(uint32_t);
+    return sendCommandReturningStatusAndData(commandCode, commandName, size, data, &replySize,
+                                             &replyCmdStatus, replySize, [] {});
+}
+
+Result Effect::sendCommandReturningStatusAndData(int commandCode, const char* commandName,
+                                                 uint32_t size, void* data, uint32_t* replySize,
+                                                 void* replyData, uint32_t minReplySize,
+                                                 CommandSuccessCallback onSuccess) {
+    status_t status = (*mHandle)->command(mHandle, commandCode, size, data, replySize, replyData);
+    Result retval;
+    if (status == OK && minReplySize >= sizeof(uint32_t) && *replySize >= minReplySize) {
+        uint32_t commandStatus = *reinterpret_cast<uint32_t*>(replyData);
+        retval = analyzeCommandStatus(commandName, sContextResultOfCommand, commandStatus);
+        if (commandStatus == OK) {
+            onSuccess();
+        }
+    } else {
+        retval = analyzeCommandStatus(commandName, sContextCallToCommand, status);
+    }
+    return retval;
+}
+
+Result Effect::setConfigImpl(int commandCode, const char* commandName, const EffectConfig& config,
+                             const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+                             const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    effect_config_t halConfig;
+    effectConfigToHal(config, &halConfig);
+    if (inputBufferProvider != 0) {
+        LOG_FATAL("Using input buffer provider is not supported");
+    }
+    if (outputBufferProvider != 0) {
+        LOG_FATAL("Using output buffer provider is not supported");
+    }
+    return sendCommandReturningStatus(commandCode, commandName, sizeof(effect_config_t),
+                                      &halConfig);
+}
+
+Result Effect::setParameterImpl(uint32_t paramSize, const void* paramData, uint32_t valueSize,
+                                const void* valueData) {
+    std::vector<uint8_t> halParamBuffer =
+        parameterToHal(paramSize, paramData, valueSize, &valueData);
+    return sendCommandReturningStatus(EFFECT_CMD_SET_PARAM, "SET_PARAM", halParamBuffer.size(),
+                                      &halParamBuffer[0]);
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> Effect::init() {
+    return sendCommandReturningStatus(EFFECT_CMD_INIT, "INIT");
+}
+
+Return<Result> Effect::setConfig(const EffectConfig& config,
+                                 const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+                                 const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return setConfigImpl(EFFECT_CMD_SET_CONFIG, "SET_CONFIG", config, inputBufferProvider,
+                         outputBufferProvider);
+}
+
+Return<Result> Effect::reset() {
+    return sendCommand(EFFECT_CMD_RESET, "RESET");
+}
+
+Return<Result> Effect::enable() {
+    return sendCommandReturningStatus(EFFECT_CMD_ENABLE, "ENABLE");
+}
+
+Return<Result> Effect::disable() {
+    return sendCommandReturningStatus(EFFECT_CMD_DISABLE, "DISABLE");
+}
+
+Return<Result> Effect::setDevice(AudioDevice device) {
+    uint32_t halDevice = static_cast<uint32_t>(device);
+    return sendCommand(EFFECT_CMD_SET_DEVICE, "SET_DEVICE", sizeof(uint32_t), &halDevice);
+}
+
+Return<void> Effect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                     setAndGetVolume_cb _hidl_cb) {
+    uint32_t halDataSize;
+    std::unique_ptr<uint8_t[]> halData = hidlVecToHal(volumes, &halDataSize);
+    uint32_t halResultSize = halDataSize;
+    uint32_t halResult[volumes.size()];
+    Result retval = sendCommandReturningData(EFFECT_CMD_SET_VOLUME, "SET_VOLUME", halDataSize,
+                                             &halData[0], &halResultSize, halResult);
+    hidl_vec<uint32_t> result;
+    if (retval == Result::OK) {
+        result.setToExternal(&halResult[0], halResultSize);
+    }
+    _hidl_cb(retval, result);
+    return Void();
+}
+
+Return<Result> Effect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    uint32_t halDataSize;
+    std::unique_ptr<uint8_t[]> halData = hidlVecToHal(volumes, &halDataSize);
+    return sendCommand(EFFECT_CMD_SET_VOLUME, "SET_VOLUME", halDataSize, &halData[0]);
+}
+
+Return<Result> Effect::setAudioMode(AudioMode mode) {
+    uint32_t halMode = static_cast<uint32_t>(mode);
+    return sendCommand(EFFECT_CMD_SET_AUDIO_MODE, "SET_AUDIO_MODE", sizeof(uint32_t), &halMode);
+}
+
+Return<Result> Effect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return setConfigImpl(EFFECT_CMD_SET_CONFIG_REVERSE, "SET_CONFIG_REVERSE", config,
+                         inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> Effect::setInputDevice(AudioDevice device) {
+    uint32_t halDevice = static_cast<uint32_t>(device);
+    return sendCommand(EFFECT_CMD_SET_INPUT_DEVICE, "SET_INPUT_DEVICE", sizeof(uint32_t),
+                       &halDevice);
+}
+
+Return<void> Effect::getConfig(getConfig_cb _hidl_cb) {
+    getConfigImpl(EFFECT_CMD_GET_CONFIG, "GET_CONFIG", _hidl_cb);
+    return Void();
+}
+
+Return<void> Effect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    getConfigImpl(EFFECT_CMD_GET_CONFIG_REVERSE, "GET_CONFIG_REVERSE", _hidl_cb);
+    return Void();
+}
+
+Return<void> Effect::getSupportedAuxChannelsConfigs(uint32_t maxConfigs,
+                                                    getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    hidl_vec<EffectAuxChannelsConfig> result;
+    Result retval = getSupportedConfigsImpl(
+        EFFECT_FEATURE_AUX_CHANNELS, maxConfigs, sizeof(channel_config_t),
+        [&](uint32_t supportedConfigs, void* configsData) {
+            result.resize(supportedConfigs);
+            channel_config_t* config = reinterpret_cast<channel_config_t*>(configsData);
+            for (size_t i = 0; i < result.size(); ++i) {
+                effectAuxChannelsConfigFromHal(*config++, &result[i]);
+            }
+        });
+    _hidl_cb(retval, result);
+    return Void();
+}
+
+Return<void> Effect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    uint32_t halResult[alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t))];
+    memset(halResult, 0, sizeof(halResult));
+    EffectAuxChannelsConfig result;
+    Result retval = getCurrentConfigImpl(
+        EFFECT_FEATURE_AUX_CHANNELS, sizeof(channel_config_t), [&](void* configData) {
+            effectAuxChannelsConfigFromHal(*reinterpret_cast<channel_config_t*>(configData),
+                                           &result);
+        });
+    _hidl_cb(retval, result);
+    return Void();
+}
+
+Return<Result> Effect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    uint32_t halCmd[alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t))];
+    halCmd[0] = EFFECT_FEATURE_AUX_CHANNELS;
+    effectAuxChannelsConfigToHal(config, reinterpret_cast<channel_config_t*>(&halCmd[1]));
+    return sendCommandReturningStatus(EFFECT_CMD_SET_FEATURE_CONFIG,
+                                      "SET_FEATURE_CONFIG AUX_CHANNELS", sizeof(halCmd), halCmd);
+}
+
+Return<Result> Effect::setAudioSource(AudioSource source) {
+    uint32_t halSource = static_cast<uint32_t>(source);
+    return sendCommand(EFFECT_CMD_SET_AUDIO_SOURCE, "SET_AUDIO_SOURCE", sizeof(uint32_t),
+                       &halSource);
+}
+
+Return<Result> Effect::offload(const EffectOffloadParameter& param) {
+    effect_offload_param_t halParam;
+    effectOffloadParamToHal(param, &halParam);
+    return sendCommandReturningStatus(EFFECT_CMD_OFFLOAD, "OFFLOAD", sizeof(effect_offload_param_t),
+                                      &halParam);
+}
+
+Return<void> Effect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    effect_descriptor_t halDescriptor;
+    memset(&halDescriptor, 0, sizeof(effect_descriptor_t));
+    status_t status = (*mHandle)->get_descriptor(mHandle, &halDescriptor);
+    EffectDescriptor descriptor;
+    if (status == OK) {
+        effectDescriptorFromHal(halDescriptor, &descriptor);
+    }
+    _hidl_cb(analyzeStatus("get_descriptor", "", sContextCallFunction, status), descriptor);
+    return Void();
+}
+
+Return<void> Effect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                             uint32_t resultMaxSize, command_cb _hidl_cb) {
+    uint32_t halDataSize;
+    std::unique_ptr<uint8_t[]> halData = hidlVecToHal(data, &halDataSize);
+    uint32_t halResultSize = resultMaxSize;
+    std::unique_ptr<uint8_t[]> halResult(new uint8_t[halResultSize]);
+    memset(&halResult[0], 0, halResultSize);
+
+    void* dataPtr = halDataSize > 0 ? &halData[0] : NULL;
+    void* resultPtr = halResultSize > 0 ? &halResult[0] : NULL;
+    status_t status =
+        (*mHandle)->command(mHandle, commandId, halDataSize, dataPtr, &halResultSize, resultPtr);
+    hidl_vec<uint8_t> result;
+    if (status == OK && resultPtr != NULL) {
+        result.setToExternal(&halResult[0], halResultSize);
+    }
+    _hidl_cb(status, result);
+    return Void();
+}
+
+Return<Result> Effect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                    const hidl_vec<uint8_t>& value) {
+    return setParameterImpl(parameter.size(), &parameter[0], value.size(), &value[0]);
+}
+
+Return<void> Effect::getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                                  getParameter_cb _hidl_cb) {
+    hidl_vec<uint8_t> value;
+    Result retval = getParameterImpl(
+        parameter.size(), &parameter[0], valueMaxSize,
+        [&](uint32_t valueSize, const void* valueData) {
+            value.setToExternal(reinterpret_cast<uint8_t*>(const_cast<void*>(valueData)),
+                                valueSize);
+        });
+    _hidl_cb(retval, value);
+    return Void();
+}
+
+Return<void> Effect::getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                                   uint32_t configSize,
+                                                   getSupportedConfigsForFeature_cb _hidl_cb) {
+    uint32_t configCount = 0;
+    hidl_vec<uint8_t> result;
+    Result retval = getSupportedConfigsImpl(featureId, maxConfigs, configSize,
+                                            [&](uint32_t supportedConfigs, void* configsData) {
+                                                configCount = supportedConfigs;
+                                                result.resize(configCount * configSize);
+                                                memcpy(&result[0], configsData, result.size());
+                                            });
+    _hidl_cb(retval, configCount, result);
+    return Void();
+}
+
+Return<void> Effect::getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                                getCurrentConfigForFeature_cb _hidl_cb) {
+    hidl_vec<uint8_t> result;
+    Result retval = getCurrentConfigImpl(featureId, configSize, [&](void* configData) {
+        result.resize(configSize);
+        memcpy(&result[0], configData, result.size());
+    });
+    _hidl_cb(retval, result);
+    return Void();
+}
+
+Return<Result> Effect::setCurrentConfigForFeature(uint32_t featureId,
+                                                  const hidl_vec<uint8_t>& configData) {
+    uint32_t halCmd[alignedSizeIn<uint32_t>(sizeof(uint32_t) + configData.size())];
+    memset(halCmd, 0, sizeof(halCmd));
+    halCmd[0] = featureId;
+    memcpy(&halCmd[1], &configData[0], configData.size());
+    return sendCommandReturningStatus(EFFECT_CMD_SET_FEATURE_CONFIG, "SET_FEATURE_CONFIG",
+                                      sizeof(halCmd), halCmd);
+}
+
+Return<Result> Effect::close() {
+    if (mIsClosed) return Result::INVALID_STATE;
+    mIsClosed = true;
+    if (mProcessThread.get()) {
+        mStopProcessThread.store(true, std::memory_order_release);
+    }
+    if (mEfGroup) {
+        mEfGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::REQUEST_QUIT));
+    }
+    return Result::OK;
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.h b/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.h
new file mode 100644
index 0000000..e586abb
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hardware/audio_effect.h>
+#include <system/audio_effect.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::Uuid;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectsFactory;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct EffectsFactory : public IEffectsFactory {
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectsFactory follow.
+    Return<void> getAllDescriptors(getAllDescriptors_cb _hidl_cb) override;
+    Return<void> getDescriptor(const Uuid& uid, getDescriptor_cb _hidl_cb) override;
+    Return<void> createEffect(const Uuid& uid, int32_t session, int32_t ioHandle,
+                              createEffect_cb _hidl_cb) override;
+    Return<void> debugDump(const hidl_handle& fd) override;
+
+   private:
+    static sp<IEffect> dispatchEffectInstanceCreation(const effect_descriptor_t& halDescriptor,
+                                                      effect_handle_t handle);
+};
+
+extern "C" IEffectsFactory* HIDL_FETCH_IEffectsFactory(const char* name);
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.impl.h
new file mode 100644
index 0000000..b2a36a9
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.impl.h
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+#include <media/EffectsFactoryApi.h>
+#include <system/audio_effects/effect_aec.h>
+#include <system/audio_effects/effect_agc.h>
+#include <system/audio_effects/effect_bassboost.h>
+#include <system/audio_effects/effect_downmix.h>
+#include <system/audio_effects/effect_environmentalreverb.h>
+#include <system/audio_effects/effect_equalizer.h>
+#include <system/audio_effects/effect_loudnessenhancer.h>
+#include <system/audio_effects/effect_ns.h>
+#include <system/audio_effects/effect_presetreverb.h>
+#include <system/audio_effects/effect_virtualizer.h>
+#include <system/audio_effects/effect_visualizer.h>
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::HidlUtils;
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+// static
+sp<IEffect> EffectsFactory::dispatchEffectInstanceCreation(const effect_descriptor_t& halDescriptor,
+                                                           effect_handle_t handle) {
+    const effect_uuid_t* halUuid = &halDescriptor.type;
+    if (memcmp(halUuid, FX_IID_AEC, sizeof(effect_uuid_t)) == 0) {
+        return new AcousticEchoCancelerEffect(handle);
+    } else if (memcmp(halUuid, FX_IID_AGC, sizeof(effect_uuid_t)) == 0) {
+        return new AutomaticGainControlEffect(handle);
+    } else if (memcmp(halUuid, SL_IID_BASSBOOST, sizeof(effect_uuid_t)) == 0) {
+        return new BassBoostEffect(handle);
+    } else if (memcmp(halUuid, EFFECT_UIID_DOWNMIX, sizeof(effect_uuid_t)) == 0) {
+        return new DownmixEffect(handle);
+    } else if (memcmp(halUuid, SL_IID_ENVIRONMENTALREVERB, sizeof(effect_uuid_t)) == 0) {
+        return new EnvironmentalReverbEffect(handle);
+    } else if (memcmp(halUuid, SL_IID_EQUALIZER, sizeof(effect_uuid_t)) == 0) {
+        return new EqualizerEffect(handle);
+    } else if (memcmp(halUuid, FX_IID_LOUDNESS_ENHANCER, sizeof(effect_uuid_t)) == 0) {
+        return new LoudnessEnhancerEffect(handle);
+    } else if (memcmp(halUuid, FX_IID_NS, sizeof(effect_uuid_t)) == 0) {
+        return new NoiseSuppressionEffect(handle);
+    } else if (memcmp(halUuid, SL_IID_PRESETREVERB, sizeof(effect_uuid_t)) == 0) {
+        return new PresetReverbEffect(handle);
+    } else if (memcmp(halUuid, SL_IID_VIRTUALIZER, sizeof(effect_uuid_t)) == 0) {
+        return new VirtualizerEffect(handle);
+    } else if (memcmp(halUuid, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) {
+        return new VisualizerEffect(handle);
+    }
+    return new Effect(handle);
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectsFactory follow.
+Return<void> EffectsFactory::getAllDescriptors(getAllDescriptors_cb _hidl_cb) {
+    Result retval(Result::OK);
+    hidl_vec<EffectDescriptor> result;
+    uint32_t numEffects;
+    status_t status;
+
+restart:
+    numEffects = 0;
+    status = EffectQueryNumberEffects(&numEffects);
+    if (status != OK) {
+        retval = Result::NOT_INITIALIZED;
+        ALOGE("Error querying number of effects: %s", strerror(-status));
+        goto exit;
+    }
+    result.resize(numEffects);
+    for (uint32_t i = 0; i < numEffects; ++i) {
+        effect_descriptor_t halDescriptor;
+        status = EffectQueryEffect(i, &halDescriptor);
+        if (status == OK) {
+            effectDescriptorFromHal(halDescriptor, &result[i]);
+        } else {
+            ALOGE("Error querying effect at position %d / %d: %s", i, numEffects,
+                  strerror(-status));
+            switch (status) {
+                case -ENOSYS: {
+                    // Effect list has changed.
+                    goto restart;
+                }
+                case -ENOENT: {
+                    // No more effects available.
+                    result.resize(i);
+                }
+                default: {
+                    result.resize(0);
+                    retval = Result::NOT_INITIALIZED;
+                }
+            }
+            break;
+        }
+    }
+
+exit:
+    _hidl_cb(retval, result);
+    return Void();
+}
+
+Return<void> EffectsFactory::getDescriptor(const Uuid& uid, getDescriptor_cb _hidl_cb) {
+    effect_uuid_t halUuid;
+    HidlUtils::uuidToHal(uid, &halUuid);
+    effect_descriptor_t halDescriptor;
+    status_t status = EffectGetDescriptor(&halUuid, &halDescriptor);
+    EffectDescriptor descriptor;
+    effectDescriptorFromHal(halDescriptor, &descriptor);
+    Result retval(Result::OK);
+    if (status != OK) {
+        ALOGE("Error querying effect descriptor for %s: %s", uuidToString(halUuid).c_str(),
+              strerror(-status));
+        if (status == -ENOENT) {
+            retval = Result::INVALID_ARGUMENTS;
+        } else {
+            retval = Result::NOT_INITIALIZED;
+        }
+    }
+    _hidl_cb(retval, descriptor);
+    return Void();
+}
+
+Return<void> EffectsFactory::createEffect(const Uuid& uid, int32_t session, int32_t ioHandle,
+                                          createEffect_cb _hidl_cb) {
+    effect_uuid_t halUuid;
+    HidlUtils::uuidToHal(uid, &halUuid);
+    effect_handle_t handle;
+    Result retval(Result::OK);
+    status_t status = EffectCreate(&halUuid, session, ioHandle, &handle);
+    sp<IEffect> effect;
+    uint64_t effectId = EffectMap::INVALID_ID;
+    if (status == OK) {
+        effect_descriptor_t halDescriptor;
+        memset(&halDescriptor, 0, sizeof(effect_descriptor_t));
+        status = (*handle)->get_descriptor(handle, &halDescriptor);
+        if (status == OK) {
+            effect = dispatchEffectInstanceCreation(halDescriptor, handle);
+            effectId = EffectMap::getInstance().add(handle);
+        } else {
+            ALOGE("Error querying effect descriptor for %s: %s", uuidToString(halUuid).c_str(),
+                  strerror(-status));
+            EffectRelease(handle);
+        }
+    }
+    if (status != OK) {
+        ALOGE("Error creating effect %s: %s", uuidToString(halUuid).c_str(), strerror(-status));
+        if (status == -ENOENT) {
+            retval = Result::INVALID_ARGUMENTS;
+        } else {
+            retval = Result::NOT_INITIALIZED;
+        }
+    }
+    _hidl_cb(retval, effect, effectId);
+    return Void();
+}
+
+Return<void> EffectsFactory::debugDump(const hidl_handle& fd) {
+    if (fd.getNativeHandle() != nullptr && fd->numFds == 1) {
+        EffectDumpEffects(fd->data[0]);
+    }
+    return Void();
+}
+
+IEffectsFactory* HIDL_FETCH_IEffectsFactory(const char* /* name */) {
+    return new EffectsFactory();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/EnvironmentalReverbEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/EnvironmentalReverbEffect.h
new file mode 100644
index 0000000..8351e55
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/EnvironmentalReverbEffect.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <system/audio_effects/effect_environmentalreverb.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEnvironmentalReverbEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct EnvironmentalReverbEffect : public IEnvironmentalReverbEffect {
+    explicit EnvironmentalReverbEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from
+    // ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEnvironmentalReverbEffect follow.
+    Return<Result> setBypass(bool bypass) override;
+    Return<void> getBypass(getBypass_cb _hidl_cb) override;
+    Return<Result> setRoomLevel(int16_t roomLevel) override;
+    Return<void> getRoomLevel(getRoomLevel_cb _hidl_cb) override;
+    Return<Result> setRoomHfLevel(int16_t roomHfLevel) override;
+    Return<void> getRoomHfLevel(getRoomHfLevel_cb _hidl_cb) override;
+    Return<Result> setDecayTime(uint32_t decayTime) override;
+    Return<void> getDecayTime(getDecayTime_cb _hidl_cb) override;
+    Return<Result> setDecayHfRatio(int16_t decayHfRatio) override;
+    Return<void> getDecayHfRatio(getDecayHfRatio_cb _hidl_cb) override;
+    Return<Result> setReflectionsLevel(int16_t reflectionsLevel) override;
+    Return<void> getReflectionsLevel(getReflectionsLevel_cb _hidl_cb) override;
+    Return<Result> setReflectionsDelay(uint32_t reflectionsDelay) override;
+    Return<void> getReflectionsDelay(getReflectionsDelay_cb _hidl_cb) override;
+    Return<Result> setReverbLevel(int16_t reverbLevel) override;
+    Return<void> getReverbLevel(getReverbLevel_cb _hidl_cb) override;
+    Return<Result> setReverbDelay(uint32_t reverbDelay) override;
+    Return<void> getReverbDelay(getReverbDelay_cb _hidl_cb) override;
+    Return<Result> setDiffusion(int16_t diffusion) override;
+    Return<void> getDiffusion(getDiffusion_cb _hidl_cb) override;
+    Return<Result> setDensity(int16_t density) override;
+    Return<void> getDensity(getDensity_cb _hidl_cb) override;
+    Return<Result> setAllProperties(
+        const IEnvironmentalReverbEffect::AllProperties& properties) override;
+    Return<void> getAllProperties(getAllProperties_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~EnvironmentalReverbEffect();
+
+    void propertiesFromHal(const t_reverb_settings& halProperties,
+                           IEnvironmentalReverbEffect::AllProperties* properties);
+    void propertiesToHal(const IEnvironmentalReverbEffect::AllProperties& properties,
+                         t_reverb_settings* halProperties);
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/EnvironmentalReverbEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/EnvironmentalReverbEffect.impl.h
new file mode 100644
index 0000000..9090b8a
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/EnvironmentalReverbEffect.impl.h
@@ -0,0 +1,302 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+EnvironmentalReverbEffect::EnvironmentalReverbEffect(effect_handle_t handle)
+    : mEffect(new Effect(handle)) {}
+
+EnvironmentalReverbEffect::~EnvironmentalReverbEffect() {}
+
+void EnvironmentalReverbEffect::propertiesFromHal(
+    const t_reverb_settings& halProperties, IEnvironmentalReverbEffect::AllProperties* properties) {
+    properties->roomLevel = halProperties.roomLevel;
+    properties->roomHfLevel = halProperties.roomHFLevel;
+    properties->decayTime = halProperties.decayTime;
+    properties->decayHfRatio = halProperties.decayHFRatio;
+    properties->reflectionsLevel = halProperties.reflectionsLevel;
+    properties->reflectionsDelay = halProperties.reflectionsDelay;
+    properties->reverbLevel = halProperties.reverbLevel;
+    properties->reverbDelay = halProperties.reverbDelay;
+    properties->diffusion = halProperties.diffusion;
+    properties->density = halProperties.density;
+}
+
+void EnvironmentalReverbEffect::propertiesToHal(
+    const IEnvironmentalReverbEffect::AllProperties& properties, t_reverb_settings* halProperties) {
+    halProperties->roomLevel = properties.roomLevel;
+    halProperties->roomHFLevel = properties.roomHfLevel;
+    halProperties->decayTime = properties.decayTime;
+    halProperties->decayHFRatio = properties.decayHfRatio;
+    halProperties->reflectionsLevel = properties.reflectionsLevel;
+    halProperties->reflectionsDelay = properties.reflectionsDelay;
+    halProperties->reverbLevel = properties.reverbLevel;
+    halProperties->reverbDelay = properties.reverbDelay;
+    halProperties->diffusion = properties.diffusion;
+    halProperties->density = properties.density;
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> EnvironmentalReverbEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> EnvironmentalReverbEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> EnvironmentalReverbEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> EnvironmentalReverbEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> EnvironmentalReverbEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> EnvironmentalReverbEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> EnvironmentalReverbEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                                        setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::volumeChangeNotification(
+    const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> EnvironmentalReverbEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> EnvironmentalReverbEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> EnvironmentalReverbEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> EnvironmentalReverbEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> EnvironmentalReverbEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> EnvironmentalReverbEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> EnvironmentalReverbEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setAuxChannelsConfig(
+    const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> EnvironmentalReverbEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> EnvironmentalReverbEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> EnvironmentalReverbEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> EnvironmentalReverbEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                            const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> EnvironmentalReverbEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                                uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                                       const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> EnvironmentalReverbEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                                     uint32_t valueMaxSize,
+                                                     getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> EnvironmentalReverbEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> EnvironmentalReverbEffect::getCurrentConfigForFeature(
+    uint32_t featureId, uint32_t configSize, getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setCurrentConfigForFeature(
+    uint32_t featureId, const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> EnvironmentalReverbEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEnvironmentalReverbEffect
+// follow.
+Return<Result> EnvironmentalReverbEffect::setBypass(bool bypass) {
+    return mEffect->setParam(REVERB_PARAM_BYPASS, bypass);
+}
+
+Return<void> EnvironmentalReverbEffect::getBypass(getBypass_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_BYPASS, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setRoomLevel(int16_t roomLevel) {
+    return mEffect->setParam(REVERB_PARAM_ROOM_LEVEL, roomLevel);
+}
+
+Return<void> EnvironmentalReverbEffect::getRoomLevel(getRoomLevel_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_ROOM_LEVEL, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setRoomHfLevel(int16_t roomHfLevel) {
+    return mEffect->setParam(REVERB_PARAM_ROOM_HF_LEVEL, roomHfLevel);
+}
+
+Return<void> EnvironmentalReverbEffect::getRoomHfLevel(getRoomHfLevel_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_ROOM_HF_LEVEL, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setDecayTime(uint32_t decayTime) {
+    return mEffect->setParam(REVERB_PARAM_DECAY_TIME, decayTime);
+}
+
+Return<void> EnvironmentalReverbEffect::getDecayTime(getDecayTime_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_DECAY_TIME, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setDecayHfRatio(int16_t decayHfRatio) {
+    return mEffect->setParam(REVERB_PARAM_DECAY_HF_RATIO, decayHfRatio);
+}
+
+Return<void> EnvironmentalReverbEffect::getDecayHfRatio(getDecayHfRatio_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_DECAY_HF_RATIO, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setReflectionsLevel(int16_t reflectionsLevel) {
+    return mEffect->setParam(REVERB_PARAM_REFLECTIONS_LEVEL, reflectionsLevel);
+}
+
+Return<void> EnvironmentalReverbEffect::getReflectionsLevel(getReflectionsLevel_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_REFLECTIONS_LEVEL, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setReflectionsDelay(uint32_t reflectionsDelay) {
+    return mEffect->setParam(REVERB_PARAM_REFLECTIONS_DELAY, reflectionsDelay);
+}
+
+Return<void> EnvironmentalReverbEffect::getReflectionsDelay(getReflectionsDelay_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_REFLECTIONS_DELAY, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setReverbLevel(int16_t reverbLevel) {
+    return mEffect->setParam(REVERB_PARAM_REVERB_LEVEL, reverbLevel);
+}
+
+Return<void> EnvironmentalReverbEffect::getReverbLevel(getReverbLevel_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_REVERB_LEVEL, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setReverbDelay(uint32_t reverbDelay) {
+    return mEffect->setParam(REVERB_PARAM_REVERB_DELAY, reverbDelay);
+}
+
+Return<void> EnvironmentalReverbEffect::getReverbDelay(getReverbDelay_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_REVERB_DELAY, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setDiffusion(int16_t diffusion) {
+    return mEffect->setParam(REVERB_PARAM_DIFFUSION, diffusion);
+}
+
+Return<void> EnvironmentalReverbEffect::getDiffusion(getDiffusion_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_DIFFUSION, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setDensity(int16_t density) {
+    return mEffect->setParam(REVERB_PARAM_DENSITY, density);
+}
+
+Return<void> EnvironmentalReverbEffect::getDensity(getDensity_cb _hidl_cb) {
+    return mEffect->getIntegerParam(REVERB_PARAM_DENSITY, _hidl_cb);
+}
+
+Return<Result> EnvironmentalReverbEffect::setAllProperties(
+    const IEnvironmentalReverbEffect::AllProperties& properties) {
+    t_reverb_settings halProperties;
+    propertiesToHal(properties, &halProperties);
+    return mEffect->setParam(REVERB_PARAM_PROPERTIES, halProperties);
+}
+
+Return<void> EnvironmentalReverbEffect::getAllProperties(getAllProperties_cb _hidl_cb) {
+    t_reverb_settings halProperties;
+    Result retval = mEffect->getParam(REVERB_PARAM_PROPERTIES, halProperties);
+    AllProperties properties;
+    propertiesFromHal(halProperties, &properties);
+    _hidl_cb(retval, properties);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/EqualizerEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/EqualizerEffect.h
new file mode 100644
index 0000000..c2b8ef8
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/EqualizerEffect.h
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <vector>
+
+#include <system/audio_effects/effect_equalizer.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEqualizerEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct EqualizerEffect : public IEqualizerEffect {
+    explicit EqualizerEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEqualizerEffect follow.
+    Return<void> getNumBands(getNumBands_cb _hidl_cb) override;
+    Return<void> getLevelRange(getLevelRange_cb _hidl_cb) override;
+    Return<Result> setBandLevel(uint16_t band, int16_t level) override;
+    Return<void> getBandLevel(uint16_t band, getBandLevel_cb _hidl_cb) override;
+    Return<void> getBandCenterFrequency(uint16_t band, getBandCenterFrequency_cb _hidl_cb) override;
+    Return<void> getBandFrequencyRange(uint16_t band, getBandFrequencyRange_cb _hidl_cb) override;
+    Return<void> getBandForFrequency(uint32_t freq, getBandForFrequency_cb _hidl_cb) override;
+    Return<void> getPresetNames(getPresetNames_cb _hidl_cb) override;
+    Return<Result> setCurrentPreset(uint16_t preset) override;
+    Return<void> getCurrentPreset(getCurrentPreset_cb _hidl_cb) override;
+    Return<Result> setAllProperties(const IEqualizerEffect::AllProperties& properties) override;
+    Return<void> getAllProperties(getAllProperties_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~EqualizerEffect();
+
+    void propertiesFromHal(const t_equalizer_settings& halProperties,
+                           IEqualizerEffect::AllProperties* properties);
+    std::vector<uint8_t> propertiesToHal(const IEqualizerEffect::AllProperties& properties,
+                                         t_equalizer_settings** halProperties);
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/EqualizerEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/EqualizerEffect.impl.h
new file mode 100644
index 0000000..78485e4
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/EqualizerEffect.impl.h
@@ -0,0 +1,290 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <memory.h>
+
+#include <android/log.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+EqualizerEffect::EqualizerEffect(effect_handle_t handle) : mEffect(new Effect(handle)) {}
+
+EqualizerEffect::~EqualizerEffect() {}
+
+void EqualizerEffect::propertiesFromHal(const t_equalizer_settings& halProperties,
+                                        IEqualizerEffect::AllProperties* properties) {
+    properties->curPreset = halProperties.curPreset;
+    // t_equalizer_settings incorrectly defines bandLevels as uint16_t,
+    // whereas the actual type of values used by effects is int16_t.
+    const int16_t* signedBandLevels =
+        reinterpret_cast<const int16_t*>(&halProperties.bandLevels[0]);
+    properties->bandLevels.setToExternal(const_cast<int16_t*>(signedBandLevels),
+                                         halProperties.numBands);
+}
+
+std::vector<uint8_t> EqualizerEffect::propertiesToHal(
+    const IEqualizerEffect::AllProperties& properties, t_equalizer_settings** halProperties) {
+    size_t bandsSize = properties.bandLevels.size() * sizeof(uint16_t);
+    std::vector<uint8_t> halBuffer(sizeof(t_equalizer_settings) + bandsSize, 0);
+    *halProperties = reinterpret_cast<t_equalizer_settings*>(&halBuffer[0]);
+    (*halProperties)->curPreset = properties.curPreset;
+    (*halProperties)->numBands = properties.bandLevels.size();
+    memcpy((*halProperties)->bandLevels, &properties.bandLevels[0], bandsSize);
+    return halBuffer;
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> EqualizerEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> EqualizerEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> EqualizerEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> EqualizerEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> EqualizerEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> EqualizerEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> EqualizerEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                              setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> EqualizerEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> EqualizerEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> EqualizerEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> EqualizerEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> EqualizerEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> EqualizerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> EqualizerEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> EqualizerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> EqualizerEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> EqualizerEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> EqualizerEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> EqualizerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> EqualizerEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> EqualizerEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                  const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> EqualizerEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                      uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> EqualizerEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                             const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> EqualizerEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                           uint32_t valueMaxSize, getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> EqualizerEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> EqualizerEffect::getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                                         getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> EqualizerEffect::setCurrentConfigForFeature(uint32_t featureId,
+                                                           const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> EqualizerEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEqualizerEffect follow.
+Return<void> EqualizerEffect::getNumBands(getNumBands_cb _hidl_cb) {
+    return mEffect->getIntegerParam(EQ_PARAM_NUM_BANDS, _hidl_cb);
+}
+
+Return<void> EqualizerEffect::getLevelRange(getLevelRange_cb _hidl_cb) {
+    int16_t halLevels[2] = {0, 0};
+    Result retval = mEffect->getParam(EQ_PARAM_LEVEL_RANGE, halLevels);
+    _hidl_cb(retval, halLevels[0], halLevels[1]);
+    return Void();
+}
+
+Return<Result> EqualizerEffect::setBandLevel(uint16_t band, int16_t level) {
+    return mEffect->setParam(EQ_PARAM_BAND_LEVEL, band, level);
+}
+
+Return<void> EqualizerEffect::getBandLevel(uint16_t band, getBandLevel_cb _hidl_cb) {
+    int16_t halLevel = 0;
+    Result retval = mEffect->getParam(EQ_PARAM_BAND_LEVEL, band, halLevel);
+    _hidl_cb(retval, halLevel);
+    return Void();
+}
+
+Return<void> EqualizerEffect::getBandCenterFrequency(uint16_t band,
+                                                     getBandCenterFrequency_cb _hidl_cb) {
+    uint32_t halFreq = 0;
+    Result retval = mEffect->getParam(EQ_PARAM_CENTER_FREQ, band, halFreq);
+    _hidl_cb(retval, halFreq);
+    return Void();
+}
+
+Return<void> EqualizerEffect::getBandFrequencyRange(uint16_t band,
+                                                    getBandFrequencyRange_cb _hidl_cb) {
+    uint32_t halFreqs[2] = {0, 0};
+    Result retval = mEffect->getParam(EQ_PARAM_BAND_FREQ_RANGE, band, halFreqs);
+    _hidl_cb(retval, halFreqs[0], halFreqs[1]);
+    return Void();
+}
+
+Return<void> EqualizerEffect::getBandForFrequency(uint32_t freq, getBandForFrequency_cb _hidl_cb) {
+    uint16_t halBand = 0;
+    Result retval = mEffect->getParam(EQ_PARAM_GET_BAND, freq, halBand);
+    _hidl_cb(retval, halBand);
+    return Void();
+}
+
+Return<void> EqualizerEffect::getPresetNames(getPresetNames_cb _hidl_cb) {
+    uint16_t halPresetCount = 0;
+    Result retval = mEffect->getParam(EQ_PARAM_GET_NUM_OF_PRESETS, halPresetCount);
+    hidl_vec<hidl_string> presetNames;
+    if (retval == Result::OK) {
+        presetNames.resize(halPresetCount);
+        for (uint16_t i = 0; i < halPresetCount; ++i) {
+            char halPresetName[EFFECT_STRING_LEN_MAX];
+            retval = mEffect->getParam(EQ_PARAM_GET_PRESET_NAME, i, halPresetName);
+            if (retval == Result::OK) {
+                presetNames[i] = halPresetName;
+            } else {
+                presetNames.resize(i);
+            }
+        }
+    }
+    _hidl_cb(retval, presetNames);
+    return Void();
+}
+
+Return<Result> EqualizerEffect::setCurrentPreset(uint16_t preset) {
+    return mEffect->setParam(EQ_PARAM_CUR_PRESET, preset);
+}
+
+Return<void> EqualizerEffect::getCurrentPreset(getCurrentPreset_cb _hidl_cb) {
+    return mEffect->getIntegerParam(EQ_PARAM_CUR_PRESET, _hidl_cb);
+}
+
+Return<Result> EqualizerEffect::setAllProperties(
+    const IEqualizerEffect::AllProperties& properties) {
+    t_equalizer_settings* halPropertiesPtr = nullptr;
+    std::vector<uint8_t> halBuffer = propertiesToHal(properties, &halPropertiesPtr);
+    uint32_t paramId = EQ_PARAM_PROPERTIES;
+    return mEffect->setParameterImpl(sizeof(paramId), &paramId, halBuffer.size(), halPropertiesPtr);
+}
+
+Return<void> EqualizerEffect::getAllProperties(getAllProperties_cb _hidl_cb) {
+    uint16_t numBands = 0;
+    Result retval = mEffect->getParam(EQ_PARAM_NUM_BANDS, numBands);
+    AllProperties properties;
+    if (retval != Result::OK) {
+        _hidl_cb(retval, properties);
+        return Void();
+    }
+    size_t valueSize = sizeof(t_equalizer_settings) + sizeof(int16_t) * numBands;
+    uint32_t paramId = EQ_PARAM_PROPERTIES;
+    retval = mEffect->getParameterImpl(
+        sizeof(paramId), &paramId, valueSize, [&](uint32_t, const void* valueData) {
+            const t_equalizer_settings* halProperties =
+                reinterpret_cast<const t_equalizer_settings*>(valueData);
+            propertiesFromHal(*halProperties, &properties);
+        });
+    _hidl_cb(retval, properties);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/LoudnessEnhancerEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/LoudnessEnhancerEffect.h
new file mode 100644
index 0000000..e4f1bd5
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/LoudnessEnhancerEffect.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::ILoudnessEnhancerEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct LoudnessEnhancerEffect : public ILoudnessEnhancerEffect {
+    explicit LoudnessEnhancerEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::ILoudnessEnhancerEffect
+    // follow.
+    Return<Result> setTargetGain(int32_t targetGainMb) override;
+    Return<void> getTargetGain(getTargetGain_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~LoudnessEnhancerEffect();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/LoudnessEnhancerEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/LoudnessEnhancerEffect.impl.h
new file mode 100644
index 0000000..3f4f379
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/LoudnessEnhancerEffect.impl.h
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <system/audio_effects/effect_loudnessenhancer.h>
+
+#include <android/log.h>
+#include <system/audio_effects/effect_aec.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+LoudnessEnhancerEffect::LoudnessEnhancerEffect(effect_handle_t handle)
+    : mEffect(new Effect(handle)) {}
+
+LoudnessEnhancerEffect::~LoudnessEnhancerEffect() {}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> LoudnessEnhancerEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> LoudnessEnhancerEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> LoudnessEnhancerEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> LoudnessEnhancerEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> LoudnessEnhancerEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> LoudnessEnhancerEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> LoudnessEnhancerEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                                     setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> LoudnessEnhancerEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> LoudnessEnhancerEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> LoudnessEnhancerEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> LoudnessEnhancerEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> LoudnessEnhancerEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> LoudnessEnhancerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> LoudnessEnhancerEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> LoudnessEnhancerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> LoudnessEnhancerEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> LoudnessEnhancerEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> LoudnessEnhancerEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> LoudnessEnhancerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> LoudnessEnhancerEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> LoudnessEnhancerEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                         const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> LoudnessEnhancerEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                             uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> LoudnessEnhancerEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                                    const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> LoudnessEnhancerEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                                  uint32_t valueMaxSize, getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> LoudnessEnhancerEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> LoudnessEnhancerEffect::getCurrentConfigForFeature(
+    uint32_t featureId, uint32_t configSize, getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> LoudnessEnhancerEffect::setCurrentConfigForFeature(
+    uint32_t featureId, const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> LoudnessEnhancerEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::ILoudnessEnhancerEffect
+// follow.
+Return<Result> LoudnessEnhancerEffect::setTargetGain(int32_t targetGainMb) {
+    return mEffect->setParam(LOUDNESS_ENHANCER_DEFAULT_TARGET_GAIN_MB, targetGainMb);
+}
+
+Return<void> LoudnessEnhancerEffect::getTargetGain(getTargetGain_cb _hidl_cb) {
+    // AOSP Loudness Enhancer expects the size of the request to not include the
+    // size of the parameter.
+    uint32_t paramId = LOUDNESS_ENHANCER_DEFAULT_TARGET_GAIN_MB;
+    uint32_t targetGainMb = 0;
+    Result retval = mEffect->getParameterImpl(
+        sizeof(paramId), &paramId, 0, sizeof(targetGainMb), [&](uint32_t, const void* valueData) {
+            memcpy(&targetGainMb, valueData, sizeof(targetGainMb));
+        });
+    _hidl_cb(retval, targetGainMb);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/NoiseSuppressionEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/NoiseSuppressionEffect.h
new file mode 100644
index 0000000..7b64ba0
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/NoiseSuppressionEffect.h
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <system/audio_effects/effect_ns.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::INoiseSuppressionEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct NoiseSuppressionEffect : public INoiseSuppressionEffect {
+    explicit NoiseSuppressionEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::INoiseSuppressionEffect
+    // follow.
+    Return<Result> setSuppressionLevel(INoiseSuppressionEffect::Level level) override;
+    Return<void> getSuppressionLevel(getSuppressionLevel_cb _hidl_cb) override;
+    Return<Result> setSuppressionType(INoiseSuppressionEffect::Type type) override;
+    Return<void> getSuppressionType(getSuppressionType_cb _hidl_cb) override;
+    Return<Result> setAllProperties(
+        const INoiseSuppressionEffect::AllProperties& properties) override;
+    Return<void> getAllProperties(getAllProperties_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~NoiseSuppressionEffect();
+
+    void propertiesFromHal(const t_ns_settings& halProperties,
+                           INoiseSuppressionEffect::AllProperties* properties);
+    void propertiesToHal(const INoiseSuppressionEffect::AllProperties& properties,
+                         t_ns_settings* halProperties);
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/NoiseSuppressionEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/NoiseSuppressionEffect.impl.h
new file mode 100644
index 0000000..e5fc454
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/NoiseSuppressionEffect.impl.h
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+NoiseSuppressionEffect::NoiseSuppressionEffect(effect_handle_t handle)
+    : mEffect(new Effect(handle)) {}
+
+NoiseSuppressionEffect::~NoiseSuppressionEffect() {}
+
+void NoiseSuppressionEffect::propertiesFromHal(const t_ns_settings& halProperties,
+                                               INoiseSuppressionEffect::AllProperties* properties) {
+    properties->level = Level(halProperties.level);
+    properties->type = Type(halProperties.type);
+}
+
+void NoiseSuppressionEffect::propertiesToHal(
+    const INoiseSuppressionEffect::AllProperties& properties, t_ns_settings* halProperties) {
+    halProperties->level = static_cast<uint32_t>(properties.level);
+    halProperties->type = static_cast<uint32_t>(properties.type);
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> NoiseSuppressionEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> NoiseSuppressionEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> NoiseSuppressionEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> NoiseSuppressionEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> NoiseSuppressionEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> NoiseSuppressionEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> NoiseSuppressionEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                                     setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> NoiseSuppressionEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> NoiseSuppressionEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> NoiseSuppressionEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> NoiseSuppressionEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> NoiseSuppressionEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> NoiseSuppressionEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> NoiseSuppressionEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> NoiseSuppressionEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> NoiseSuppressionEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> NoiseSuppressionEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> NoiseSuppressionEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> NoiseSuppressionEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> NoiseSuppressionEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> NoiseSuppressionEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                         const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> NoiseSuppressionEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                             uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> NoiseSuppressionEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                                    const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> NoiseSuppressionEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                                  uint32_t valueMaxSize, getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> NoiseSuppressionEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> NoiseSuppressionEffect::getCurrentConfigForFeature(
+    uint32_t featureId, uint32_t configSize, getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> NoiseSuppressionEffect::setCurrentConfigForFeature(
+    uint32_t featureId, const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> NoiseSuppressionEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::INoiseSuppressionEffect
+// follow.
+Return<Result> NoiseSuppressionEffect::setSuppressionLevel(INoiseSuppressionEffect::Level level) {
+    return mEffect->setParam(NS_PARAM_LEVEL, static_cast<int32_t>(level));
+}
+
+Return<void> NoiseSuppressionEffect::getSuppressionLevel(getSuppressionLevel_cb _hidl_cb) {
+    int32_t halLevel = 0;
+    Result retval = mEffect->getParam(NS_PARAM_LEVEL, halLevel);
+    _hidl_cb(retval, Level(halLevel));
+    return Void();
+}
+
+Return<Result> NoiseSuppressionEffect::setSuppressionType(INoiseSuppressionEffect::Type type) {
+    return mEffect->setParam(NS_PARAM_TYPE, static_cast<int32_t>(type));
+}
+
+Return<void> NoiseSuppressionEffect::getSuppressionType(getSuppressionType_cb _hidl_cb) {
+    int32_t halType = 0;
+    Result retval = mEffect->getParam(NS_PARAM_TYPE, halType);
+    _hidl_cb(retval, Type(halType));
+    return Void();
+}
+
+Return<Result> NoiseSuppressionEffect::setAllProperties(
+    const INoiseSuppressionEffect::AllProperties& properties) {
+    t_ns_settings halProperties;
+    propertiesToHal(properties, &halProperties);
+    return mEffect->setParam(NS_PARAM_PROPERTIES, halProperties);
+}
+
+Return<void> NoiseSuppressionEffect::getAllProperties(getAllProperties_cb _hidl_cb) {
+    t_ns_settings halProperties;
+    Result retval = mEffect->getParam(NS_PARAM_PROPERTIES, halProperties);
+    AllProperties properties;
+    propertiesFromHal(halProperties, &properties);
+    _hidl_cb(retval, properties);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/PresetReverbEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/PresetReverbEffect.h
new file mode 100644
index 0000000..3114acd
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/PresetReverbEffect.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IPresetReverbEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct PresetReverbEffect : public IPresetReverbEffect {
+    explicit PresetReverbEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IPresetReverbEffect
+    // follow.
+    Return<Result> setPreset(IPresetReverbEffect::Preset preset) override;
+    Return<void> getPreset(getPreset_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~PresetReverbEffect();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/PresetReverbEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/PresetReverbEffect.impl.h
new file mode 100644
index 0000000..32198d5
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/PresetReverbEffect.impl.h
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+#include <system/audio_effects/effect_presetreverb.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+PresetReverbEffect::PresetReverbEffect(effect_handle_t handle) : mEffect(new Effect(handle)) {}
+
+PresetReverbEffect::~PresetReverbEffect() {}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> PresetReverbEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> PresetReverbEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> PresetReverbEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> PresetReverbEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> PresetReverbEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> PresetReverbEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> PresetReverbEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                                 setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> PresetReverbEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> PresetReverbEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> PresetReverbEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> PresetReverbEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> PresetReverbEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> PresetReverbEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> PresetReverbEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> PresetReverbEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> PresetReverbEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> PresetReverbEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> PresetReverbEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> PresetReverbEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> PresetReverbEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> PresetReverbEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                     const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> PresetReverbEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                         uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> PresetReverbEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                                const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> PresetReverbEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                              uint32_t valueMaxSize, getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> PresetReverbEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> PresetReverbEffect::getCurrentConfigForFeature(
+    uint32_t featureId, uint32_t configSize, getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> PresetReverbEffect::setCurrentConfigForFeature(uint32_t featureId,
+                                                              const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> PresetReverbEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IPresetReverbEffect follow.
+Return<Result> PresetReverbEffect::setPreset(IPresetReverbEffect::Preset preset) {
+    return mEffect->setParam(REVERB_PARAM_PRESET, static_cast<t_reverb_presets>(preset));
+}
+
+Return<void> PresetReverbEffect::getPreset(getPreset_cb _hidl_cb) {
+    t_reverb_presets halPreset = REVERB_PRESET_NONE;
+    Result retval = mEffect->getParam(REVERB_PARAM_PRESET, halPreset);
+    _hidl_cb(retval, Preset(halPreset));
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/VirtualizerEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/VirtualizerEffect.h
new file mode 100644
index 0000000..3715894
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/VirtualizerEffect.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioChannelMask;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IVirtualizerEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct VirtualizerEffect : public IVirtualizerEffect {
+    explicit VirtualizerEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IVirtualizerEffect
+    // follow.
+    Return<bool> isStrengthSupported() override;
+    Return<Result> setStrength(uint16_t strength) override;
+    Return<void> getStrength(getStrength_cb _hidl_cb) override;
+    Return<void> getVirtualSpeakerAngles(AudioChannelMask mask, AudioDevice device,
+                                         getVirtualSpeakerAngles_cb _hidl_cb) override;
+    Return<Result> forceVirtualizationMode(AudioDevice device) override;
+    Return<void> getVirtualizationMode(getVirtualizationMode_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+
+    virtual ~VirtualizerEffect();
+
+    void speakerAnglesFromHal(const int32_t* halAngles, uint32_t channelCount,
+                              hidl_vec<SpeakerAngle>& speakerAngles);
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/VirtualizerEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/VirtualizerEffect.impl.h
new file mode 100644
index 0000000..6fb8005
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/VirtualizerEffect.impl.h
@@ -0,0 +1,228 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <memory.h>
+
+#include <android/log.h>
+#include <system/audio_effects/effect_virtualizer.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+VirtualizerEffect::VirtualizerEffect(effect_handle_t handle) : mEffect(new Effect(handle)) {}
+
+VirtualizerEffect::~VirtualizerEffect() {}
+
+void VirtualizerEffect::speakerAnglesFromHal(const int32_t* halAngles, uint32_t channelCount,
+                                             hidl_vec<SpeakerAngle>& speakerAngles) {
+    speakerAngles.resize(channelCount);
+    for (uint32_t i = 0; i < channelCount; ++i) {
+        speakerAngles[i].mask = AudioChannelMask(*halAngles++);
+        speakerAngles[i].azimuth = *halAngles++;
+        speakerAngles[i].elevation = *halAngles++;
+    }
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> VirtualizerEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> VirtualizerEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> VirtualizerEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> VirtualizerEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> VirtualizerEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> VirtualizerEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> VirtualizerEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                                setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> VirtualizerEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> VirtualizerEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> VirtualizerEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> VirtualizerEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> VirtualizerEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> VirtualizerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> VirtualizerEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> VirtualizerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> VirtualizerEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> VirtualizerEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> VirtualizerEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> VirtualizerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> VirtualizerEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> VirtualizerEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                    const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> VirtualizerEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                        uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> VirtualizerEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                               const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> VirtualizerEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                             uint32_t valueMaxSize, getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> VirtualizerEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> VirtualizerEffect::getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                                           getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> VirtualizerEffect::setCurrentConfigForFeature(uint32_t featureId,
+                                                             const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> VirtualizerEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IVirtualizerEffect follow.
+Return<bool> VirtualizerEffect::isStrengthSupported() {
+    bool halSupported = false;
+    mEffect->getParam(VIRTUALIZER_PARAM_STRENGTH_SUPPORTED, halSupported);
+    return halSupported;
+}
+
+Return<Result> VirtualizerEffect::setStrength(uint16_t strength) {
+    return mEffect->setParam(VIRTUALIZER_PARAM_STRENGTH, strength);
+}
+
+Return<void> VirtualizerEffect::getStrength(getStrength_cb _hidl_cb) {
+    return mEffect->getIntegerParam(VIRTUALIZER_PARAM_STRENGTH, _hidl_cb);
+}
+
+Return<void> VirtualizerEffect::getVirtualSpeakerAngles(AudioChannelMask mask, AudioDevice device,
+                                                        getVirtualSpeakerAngles_cb _hidl_cb) {
+    uint32_t channelCount =
+        audio_channel_count_from_out_mask(static_cast<audio_channel_mask_t>(mask));
+    size_t halSpeakerAnglesSize = sizeof(int32_t) * 3 * channelCount;
+    uint32_t halParam[3] = {VIRTUALIZER_PARAM_VIRTUAL_SPEAKER_ANGLES,
+                            static_cast<audio_channel_mask_t>(mask),
+                            static_cast<audio_devices_t>(device)};
+    hidl_vec<SpeakerAngle> speakerAngles;
+    Result retval = mEffect->getParameterImpl(
+        sizeof(halParam), halParam, halSpeakerAnglesSize,
+        [&](uint32_t valueSize, const void* valueData) {
+            if (valueSize > halSpeakerAnglesSize) {
+                valueSize = halSpeakerAnglesSize;
+            } else if (valueSize < halSpeakerAnglesSize) {
+                channelCount = valueSize / (sizeof(int32_t) * 3);
+            }
+            speakerAnglesFromHal(reinterpret_cast<const int32_t*>(valueData), channelCount,
+                                 speakerAngles);
+        });
+    _hidl_cb(retval, speakerAngles);
+    return Void();
+}
+
+Return<Result> VirtualizerEffect::forceVirtualizationMode(AudioDevice device) {
+    return mEffect->setParam(VIRTUALIZER_PARAM_FORCE_VIRTUALIZATION_MODE,
+                             static_cast<audio_devices_t>(device));
+}
+
+Return<void> VirtualizerEffect::getVirtualizationMode(getVirtualizationMode_cb _hidl_cb) {
+    uint32_t halMode = 0;
+    Result retval = mEffect->getParam(VIRTUALIZER_PARAM_FORCE_VIRTUALIZATION_MODE, halMode);
+    _hidl_cb(retval, AudioDevice(halMode));
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/VisualizerEffect.h b/audio/effect/all-versions/default/include/effect/all-versions/default/VisualizerEffect.h
new file mode 100644
index 0000000..8050221
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/VisualizerEffect.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioDevice;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioMode;
+using ::android::hardware::audio::common::AUDIO_HAL_VERSION::AudioSource;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::AudioBuffer;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectAuxChannelsConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectConfig;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectDescriptor;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::EffectOffloadParameter;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffectBufferProviderCallback;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IVisualizerEffect;
+using ::android::hardware::audio::effect::AUDIO_HAL_VERSION::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct VisualizerEffect : public IVisualizerEffect {
+    explicit VisualizerEffect(effect_handle_t handle);
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+    Return<Result> init() override;
+    Return<Result> setConfig(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> reset() override;
+    Return<Result> enable() override;
+    Return<Result> disable() override;
+    Return<Result> setDevice(AudioDevice device) override;
+    Return<void> setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                 setAndGetVolume_cb _hidl_cb) override;
+    Return<Result> volumeChangeNotification(const hidl_vec<uint32_t>& volumes) override;
+    Return<Result> setAudioMode(AudioMode mode) override;
+    Return<Result> setConfigReverse(
+        const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+        const sp<IEffectBufferProviderCallback>& outputBufferProvider) override;
+    Return<Result> setInputDevice(AudioDevice device) override;
+    Return<void> getConfig(getConfig_cb _hidl_cb) override;
+    Return<void> getConfigReverse(getConfigReverse_cb _hidl_cb) override;
+    Return<void> getSupportedAuxChannelsConfigs(
+        uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) override;
+    Return<void> getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) override;
+    Return<Result> setAuxChannelsConfig(const EffectAuxChannelsConfig& config) override;
+    Return<Result> setAudioSource(AudioSource source) override;
+    Return<Result> offload(const EffectOffloadParameter& param) override;
+    Return<void> getDescriptor(getDescriptor_cb _hidl_cb) override;
+    Return<void> prepareForProcessing(prepareForProcessing_cb _hidl_cb) override;
+    Return<Result> setProcessBuffers(const AudioBuffer& inBuffer,
+                                     const AudioBuffer& outBuffer) override;
+    Return<void> command(uint32_t commandId, const hidl_vec<uint8_t>& data, uint32_t resultMaxSize,
+                         command_cb _hidl_cb) override;
+    Return<Result> setParameter(const hidl_vec<uint8_t>& parameter,
+                                const hidl_vec<uint8_t>& value) override;
+    Return<void> getParameter(const hidl_vec<uint8_t>& parameter, uint32_t valueMaxSize,
+                              getParameter_cb _hidl_cb) override;
+    Return<void> getSupportedConfigsForFeature(uint32_t featureId, uint32_t maxConfigs,
+                                               uint32_t configSize,
+                                               getSupportedConfigsForFeature_cb _hidl_cb) override;
+    Return<void> getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                            getCurrentConfigForFeature_cb _hidl_cb) override;
+    Return<Result> setCurrentConfigForFeature(uint32_t featureId,
+                                              const hidl_vec<uint8_t>& configData) override;
+    Return<Result> close() override;
+
+    // Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IVisualizerEffect follow.
+    Return<Result> setCaptureSize(uint16_t captureSize) override;
+    Return<void> getCaptureSize(getCaptureSize_cb _hidl_cb) override;
+    Return<Result> setScalingMode(IVisualizerEffect::ScalingMode scalingMode) override;
+    Return<void> getScalingMode(getScalingMode_cb _hidl_cb) override;
+    Return<Result> setLatency(uint32_t latencyMs) override;
+    Return<void> getLatency(getLatency_cb _hidl_cb) override;
+    Return<Result> setMeasurementMode(IVisualizerEffect::MeasurementMode measurementMode) override;
+    Return<void> getMeasurementMode(getMeasurementMode_cb _hidl_cb) override;
+    Return<void> capture(capture_cb _hidl_cb) override;
+    Return<void> measure(measure_cb _hidl_cb) override;
+
+   private:
+    sp<Effect> mEffect;
+    uint16_t mCaptureSize;
+    MeasurementMode mMeasurementMode;
+
+    virtual ~VisualizerEffect();
+};
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/VisualizerEffect.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/VisualizerEffect.impl.h
new file mode 100644
index 0000000..0351453
--- /dev/null
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/VisualizerEffect.impl.h
@@ -0,0 +1,252 @@
+/*
+ * Copyright (C) 2016 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 <common/all-versions/IncludeGuard.h>
+
+#include <android/log.h>
+#include <system/audio_effects/effect_visualizer.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace AUDIO_HAL_VERSION {
+namespace implementation {
+
+VisualizerEffect::VisualizerEffect(effect_handle_t handle)
+    : mEffect(new Effect(handle)), mCaptureSize(0), mMeasurementMode(MeasurementMode::NONE) {}
+
+VisualizerEffect::~VisualizerEffect() {}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IEffect follow.
+Return<Result> VisualizerEffect::init() {
+    return mEffect->init();
+}
+
+Return<Result> VisualizerEffect::setConfig(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfig(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> VisualizerEffect::reset() {
+    return mEffect->reset();
+}
+
+Return<Result> VisualizerEffect::enable() {
+    return mEffect->enable();
+}
+
+Return<Result> VisualizerEffect::disable() {
+    return mEffect->disable();
+}
+
+Return<Result> VisualizerEffect::setDevice(AudioDevice device) {
+    return mEffect->setDevice(device);
+}
+
+Return<void> VisualizerEffect::setAndGetVolume(const hidl_vec<uint32_t>& volumes,
+                                               setAndGetVolume_cb _hidl_cb) {
+    return mEffect->setAndGetVolume(volumes, _hidl_cb);
+}
+
+Return<Result> VisualizerEffect::volumeChangeNotification(const hidl_vec<uint32_t>& volumes) {
+    return mEffect->volumeChangeNotification(volumes);
+}
+
+Return<Result> VisualizerEffect::setAudioMode(AudioMode mode) {
+    return mEffect->setAudioMode(mode);
+}
+
+Return<Result> VisualizerEffect::setConfigReverse(
+    const EffectConfig& config, const sp<IEffectBufferProviderCallback>& inputBufferProvider,
+    const sp<IEffectBufferProviderCallback>& outputBufferProvider) {
+    return mEffect->setConfigReverse(config, inputBufferProvider, outputBufferProvider);
+}
+
+Return<Result> VisualizerEffect::setInputDevice(AudioDevice device) {
+    return mEffect->setInputDevice(device);
+}
+
+Return<void> VisualizerEffect::getConfig(getConfig_cb _hidl_cb) {
+    return mEffect->getConfig(_hidl_cb);
+}
+
+Return<void> VisualizerEffect::getConfigReverse(getConfigReverse_cb _hidl_cb) {
+    return mEffect->getConfigReverse(_hidl_cb);
+}
+
+Return<void> VisualizerEffect::getSupportedAuxChannelsConfigs(
+    uint32_t maxConfigs, getSupportedAuxChannelsConfigs_cb _hidl_cb) {
+    return mEffect->getSupportedAuxChannelsConfigs(maxConfigs, _hidl_cb);
+}
+
+Return<void> VisualizerEffect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
+    return mEffect->getAuxChannelsConfig(_hidl_cb);
+}
+
+Return<Result> VisualizerEffect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
+    return mEffect->setAuxChannelsConfig(config);
+}
+
+Return<Result> VisualizerEffect::setAudioSource(AudioSource source) {
+    return mEffect->setAudioSource(source);
+}
+
+Return<Result> VisualizerEffect::offload(const EffectOffloadParameter& param) {
+    return mEffect->offload(param);
+}
+
+Return<void> VisualizerEffect::getDescriptor(getDescriptor_cb _hidl_cb) {
+    return mEffect->getDescriptor(_hidl_cb);
+}
+
+Return<void> VisualizerEffect::prepareForProcessing(prepareForProcessing_cb _hidl_cb) {
+    return mEffect->prepareForProcessing(_hidl_cb);
+}
+
+Return<Result> VisualizerEffect::setProcessBuffers(const AudioBuffer& inBuffer,
+                                                   const AudioBuffer& outBuffer) {
+    return mEffect->setProcessBuffers(inBuffer, outBuffer);
+}
+
+Return<void> VisualizerEffect::command(uint32_t commandId, const hidl_vec<uint8_t>& data,
+                                       uint32_t resultMaxSize, command_cb _hidl_cb) {
+    return mEffect->command(commandId, data, resultMaxSize, _hidl_cb);
+}
+
+Return<Result> VisualizerEffect::setParameter(const hidl_vec<uint8_t>& parameter,
+                                              const hidl_vec<uint8_t>& value) {
+    return mEffect->setParameter(parameter, value);
+}
+
+Return<void> VisualizerEffect::getParameter(const hidl_vec<uint8_t>& parameter,
+                                            uint32_t valueMaxSize, getParameter_cb _hidl_cb) {
+    return mEffect->getParameter(parameter, valueMaxSize, _hidl_cb);
+}
+
+Return<void> VisualizerEffect::getSupportedConfigsForFeature(
+    uint32_t featureId, uint32_t maxConfigs, uint32_t configSize,
+    getSupportedConfigsForFeature_cb _hidl_cb) {
+    return mEffect->getSupportedConfigsForFeature(featureId, maxConfigs, configSize, _hidl_cb);
+}
+
+Return<void> VisualizerEffect::getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize,
+                                                          getCurrentConfigForFeature_cb _hidl_cb) {
+    return mEffect->getCurrentConfigForFeature(featureId, configSize, _hidl_cb);
+}
+
+Return<Result> VisualizerEffect::setCurrentConfigForFeature(uint32_t featureId,
+                                                            const hidl_vec<uint8_t>& configData) {
+    return mEffect->setCurrentConfigForFeature(featureId, configData);
+}
+
+Return<Result> VisualizerEffect::close() {
+    return mEffect->close();
+}
+
+// Methods from ::android::hardware::audio::effect::AUDIO_HAL_VERSION::IVisualizerEffect follow.
+Return<Result> VisualizerEffect::setCaptureSize(uint16_t captureSize) {
+    Result retval = mEffect->setParam(VISUALIZER_PARAM_CAPTURE_SIZE, captureSize);
+    if (retval == Result::OK) {
+        mCaptureSize = captureSize;
+    }
+    return retval;
+}
+
+Return<void> VisualizerEffect::getCaptureSize(getCaptureSize_cb _hidl_cb) {
+    return mEffect->getIntegerParam(VISUALIZER_PARAM_CAPTURE_SIZE, _hidl_cb);
+}
+
+Return<Result> VisualizerEffect::setScalingMode(IVisualizerEffect::ScalingMode scalingMode) {
+    return mEffect->setParam(VISUALIZER_PARAM_SCALING_MODE, static_cast<int32_t>(scalingMode));
+}
+
+Return<void> VisualizerEffect::getScalingMode(getScalingMode_cb _hidl_cb) {
+    int32_t halMode;
+    Result retval = mEffect->getParam(VISUALIZER_PARAM_SCALING_MODE, halMode);
+    _hidl_cb(retval, ScalingMode(halMode));
+    return Void();
+}
+
+Return<Result> VisualizerEffect::setLatency(uint32_t latencyMs) {
+    return mEffect->setParam(VISUALIZER_PARAM_LATENCY, latencyMs);
+}
+
+Return<void> VisualizerEffect::getLatency(getLatency_cb _hidl_cb) {
+    return mEffect->getIntegerParam(VISUALIZER_PARAM_LATENCY, _hidl_cb);
+}
+
+Return<Result> VisualizerEffect::setMeasurementMode(
+    IVisualizerEffect::MeasurementMode measurementMode) {
+    Result retval =
+        mEffect->setParam(VISUALIZER_PARAM_MEASUREMENT_MODE, static_cast<int32_t>(measurementMode));
+    if (retval == Result::OK) {
+        mMeasurementMode = measurementMode;
+    }
+    return retval;
+}
+
+Return<void> VisualizerEffect::getMeasurementMode(getMeasurementMode_cb _hidl_cb) {
+    int32_t halMode;
+    Result retval = mEffect->getParam(VISUALIZER_PARAM_MEASUREMENT_MODE, halMode);
+    _hidl_cb(retval, MeasurementMode(halMode));
+    return Void();
+}
+
+Return<void> VisualizerEffect::capture(capture_cb _hidl_cb) {
+    if (mCaptureSize == 0) {
+        _hidl_cb(Result::NOT_INITIALIZED, hidl_vec<uint8_t>());
+        return Void();
+    }
+    uint32_t halCaptureSize = mCaptureSize;
+    uint8_t halCapture[mCaptureSize];
+    Result retval = mEffect->sendCommandReturningData(VISUALIZER_CMD_CAPTURE, "VISUALIZER_CAPTURE",
+                                                      &halCaptureSize, halCapture);
+    hidl_vec<uint8_t> capture;
+    if (retval == Result::OK) {
+        capture.setToExternal(&halCapture[0], halCaptureSize);
+    }
+    _hidl_cb(retval, capture);
+    return Void();
+}
+
+Return<void> VisualizerEffect::measure(measure_cb _hidl_cb) {
+    if (mMeasurementMode == MeasurementMode::NONE) {
+        _hidl_cb(Result::NOT_INITIALIZED, Measurement());
+        return Void();
+    }
+    int32_t halMeasurement[MEASUREMENT_COUNT];
+    uint32_t halMeasurementSize = sizeof(halMeasurement);
+    Result retval = mEffect->sendCommandReturningData(VISUALIZER_CMD_MEASURE, "VISUALIZER_MEASURE",
+                                                      &halMeasurementSize, halMeasurement);
+    Measurement measurement = {.mode = MeasurementMode::PEAK_RMS};
+    measurement.value.peakAndRms.peakMb = 0;
+    measurement.value.peakAndRms.rmsMb = 0;
+    if (retval == Result::OK) {
+        measurement.value.peakAndRms.peakMb = halMeasurement[MEASUREMENT_IDX_PEAK];
+        measurement.value.peakAndRms.rmsMb = halMeasurement[MEASUREMENT_IDX_RMS];
+    }
+    _hidl_cb(retval, measurement);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace AUDIO_HAL_VERSION
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/camera/device/3.4/Android.bp b/camera/device/3.4/Android.bp
index 2523fa8..67b79b9 100644
--- a/camera/device/3.4/Android.bp
+++ b/camera/device/3.4/Android.bp
@@ -18,6 +18,9 @@
         "android.hidl.base@1.0",
     ],
     types: [
+        "HalStream",
+        "HalStreamConfiguration",
+        "Stream",
         "StreamConfiguration",
     ],
     gen_java: false,
diff --git a/camera/device/3.4/ICameraDeviceSession.hal b/camera/device/3.4/ICameraDeviceSession.hal
index e5693b2..71a4b34 100644
--- a/camera/device/3.4/ICameraDeviceSession.hal
+++ b/camera/device/3.4/ICameraDeviceSession.hal
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2017-2018 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.
@@ -19,6 +19,8 @@
 import android.hardware.camera.common@1.0::Status;
 import @3.3::ICameraDeviceSession;
 import @3.3::HalStreamConfiguration;
+import @3.2::BufferCache;
+import @3.2::CaptureRequest;
 
 /**
  * Camera device active session interface.
@@ -69,6 +71,5 @@
      */
     configureStreams_3_4(@3.4::StreamConfiguration requestedConfiguration)
             generates (Status status,
-                       @3.3::HalStreamConfiguration halConfiguration);
-
+                       @3.4::HalStreamConfiguration halConfiguration);
 };
diff --git a/camera/device/3.4/default/Android.bp b/camera/device/3.4/default/Android.bp
index c0ce838..a0ab167 100644
--- a/camera/device/3.4/default/Android.bp
+++ b/camera/device/3.4/default/Android.bp
@@ -28,6 +28,7 @@
     srcs: [
         "CameraDevice.cpp",
         "CameraDeviceSession.cpp",
+        "convert.cpp",
     ],
     shared_libs: [
         "libhidlbase",
diff --git a/camera/device/3.4/default/CameraDeviceSession.cpp b/camera/device/3.4/default/CameraDeviceSession.cpp
index 0ae470f..b74fd57 100644
--- a/camera/device/3.4/default/CameraDeviceSession.cpp
+++ b/camera/device/3.4/default/CameraDeviceSession.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2017-2018 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.
@@ -41,8 +41,8 @@
 }
 
 Return<void> CameraDeviceSession::configureStreams_3_4(
-        const V3_4::StreamConfiguration& requestedConfiguration,
-        ICameraDeviceSession::configureStreams_3_3_cb _hidl_cb)  {
+        const StreamConfiguration& requestedConfiguration,
+        ICameraDeviceSession::configureStreams_3_4_cb _hidl_cb)  {
     Status status = initStatus();
     HalStreamConfiguration outStreams;
 
@@ -86,7 +86,7 @@
     camera3_stream_configuration_t stream_list{};
     hidl_vec<camera3_stream_t*> streams;
     stream_list.session_parameters = paramBuffer;
-    if (!preProcessConfigurationLocked(requestedConfiguration.v3_2, &stream_list, &streams)) {
+    if (!preProcessConfigurationLocked_3_4(requestedConfiguration, &stream_list, &streams)) {
         _hidl_cb(Status::INTERNAL_ERROR, outStreams);
         return Void();
     }
@@ -98,7 +98,7 @@
     // In case Hal returns error most likely it was not able to release
     // the corresponding resources of the deleted streams.
     if (ret == OK) {
-        postProcessConfigurationLocked(requestedConfiguration.v3_2);
+        postProcessConfigurationLocked_3_4(requestedConfiguration);
     }
 
     if (ret == -EINVAL) {
@@ -106,7 +106,7 @@
     } else if (ret != OK) {
         status = Status::INTERNAL_ERROR;
     } else {
-        V3_3::implementation::convertToHidl(stream_list, &outStreams);
+        V3_4::implementation::convertToHidl(stream_list, &outStreams);
         mFirstRequest = true;
     }
 
@@ -114,6 +114,244 @@
     return Void();
 }
 
+bool CameraDeviceSession::preProcessConfigurationLocked_3_4(
+        const StreamConfiguration& requestedConfiguration,
+        camera3_stream_configuration_t *stream_list /*out*/,
+        hidl_vec<camera3_stream_t*> *streams /*out*/) {
+
+    if ((stream_list == nullptr) || (streams == nullptr)) {
+        return false;
+    }
+
+    stream_list->operation_mode = (uint32_t) requestedConfiguration.operationMode;
+    stream_list->num_streams = requestedConfiguration.streams.size();
+    streams->resize(stream_list->num_streams);
+    stream_list->streams = streams->data();
+
+    for (uint32_t i = 0; i < stream_list->num_streams; i++) {
+        int id = requestedConfiguration.streams[i].v3_2.id;
+
+        if (mStreamMap.count(id) == 0) {
+            Camera3Stream stream;
+            convertFromHidl(requestedConfiguration.streams[i], &stream);
+            mStreamMap[id] = stream;
+            mPhysicalCameraIdMap[id] = requestedConfiguration.streams[i].physicalCameraId;
+            mStreamMap[id].data_space = mapToLegacyDataspace(
+                    mStreamMap[id].data_space);
+            mStreamMap[id].physical_camera_id = mPhysicalCameraIdMap[id].c_str();
+            mCirculatingBuffers.emplace(stream.mId, CirculatingBuffers{});
+        } else {
+            // width/height/format must not change, but usage/rotation might need to change
+            if (mStreamMap[id].stream_type !=
+                    (int) requestedConfiguration.streams[i].v3_2.streamType ||
+                    mStreamMap[id].width != requestedConfiguration.streams[i].v3_2.width ||
+                    mStreamMap[id].height != requestedConfiguration.streams[i].v3_2.height ||
+                    mStreamMap[id].format != (int) requestedConfiguration.streams[i].v3_2.format ||
+                    mStreamMap[id].data_space !=
+                            mapToLegacyDataspace( static_cast<android_dataspace_t> (
+                                    requestedConfiguration.streams[i].v3_2.dataSpace)) ||
+                    mPhysicalCameraIdMap[id] != requestedConfiguration.streams[i].physicalCameraId) {
+                ALOGE("%s: stream %d configuration changed!", __FUNCTION__, id);
+                return false;
+            }
+            mStreamMap[id].rotation = (int) requestedConfiguration.streams[i].v3_2.rotation;
+            mStreamMap[id].usage = (uint32_t) requestedConfiguration.streams[i].v3_2.usage;
+        }
+        (*streams)[i] = &mStreamMap[id];
+    }
+
+    return true;
+}
+
+void CameraDeviceSession::postProcessConfigurationLocked_3_4(
+        const StreamConfiguration& requestedConfiguration) {
+    // delete unused streams, note we do this after adding new streams to ensure new stream
+    // will not have the same address as deleted stream, and HAL has a chance to reference
+    // the to be deleted stream in configure_streams call
+    for(auto it = mStreamMap.begin(); it != mStreamMap.end();) {
+        int id = it->first;
+        bool found = false;
+        for (const auto& stream : requestedConfiguration.streams) {
+            if (id == stream.v3_2.id) {
+                found = true;
+                break;
+            }
+        }
+        if (!found) {
+            // Unmap all buffers of deleted stream
+            // in case the configuration call succeeds and HAL
+            // is able to release the corresponding resources too.
+            cleanupBuffersLocked(id);
+            it = mStreamMap.erase(it);
+        } else {
+            ++it;
+        }
+    }
+
+    // Track video streams
+    mVideoStreamIds.clear();
+    for (const auto& stream : requestedConfiguration.streams) {
+        if (stream.v3_2.streamType == StreamType::OUTPUT &&
+            stream.v3_2.usage &
+                graphics::common::V1_0::BufferUsage::VIDEO_ENCODER) {
+            mVideoStreamIds.push_back(stream.v3_2.id);
+        }
+    }
+    mResultBatcher.setBatchedStreams(mVideoStreamIds);
+}
+
+Return<void> CameraDeviceSession::processCaptureRequest_3_4(
+        const hidl_vec<CaptureRequest>& requests,
+        const hidl_vec<V3_2::BufferCache>& cachesToRemove,
+        ICameraDeviceSession::processCaptureRequest_cb _hidl_cb)  {
+    updateBufferCaches(cachesToRemove);
+
+    uint32_t numRequestProcessed = 0;
+    Status s = Status::OK;
+    for (size_t i = 0; i < requests.size(); i++, numRequestProcessed++) {
+        s = processOneCaptureRequest_3_4(requests[i]);
+        if (s != Status::OK) {
+            break;
+        }
+    }
+
+    if (s == Status::OK && requests.size() > 1) {
+        mResultBatcher.registerBatch(requests);
+    }
+
+    _hidl_cb(s, numRequestProcessed);
+    return Void();
+}
+
+Status CameraDeviceSession::processOneCaptureRequest_3_4(const CaptureRequest& request)  {
+    Status status = initStatus();
+    if (status != Status::OK) {
+        ALOGE("%s: camera init failed or disconnected", __FUNCTION__);
+        return status;
+    }
+
+    camera3_capture_request_t halRequest;
+    halRequest.frame_number = request.frameNumber;
+
+    bool converted = true;
+    V3_2::CameraMetadata settingsFmq;  // settings from FMQ
+    if (request.fmqSettingsSize > 0) {
+        // non-blocking read; client must write metadata before calling
+        // processOneCaptureRequest
+        settingsFmq.resize(request.fmqSettingsSize);
+        bool read = mRequestMetadataQueue->read(settingsFmq.data(), request.fmqSettingsSize);
+        if (read) {
+            converted = V3_2::implementation::convertFromHidl(settingsFmq, &halRequest.settings);
+        } else {
+            ALOGE("%s: capture request settings metadata couldn't be read from fmq!", __FUNCTION__);
+            converted = false;
+        }
+    } else {
+        converted = V3_2::implementation::convertFromHidl(request.settings, &halRequest.settings);
+    }
+
+    if (!converted) {
+        ALOGE("%s: capture request settings metadata is corrupt!", __FUNCTION__);
+        return Status::ILLEGAL_ARGUMENT;
+    }
+
+    if (mFirstRequest && halRequest.settings == nullptr) {
+        ALOGE("%s: capture request settings must not be null for first request!",
+                __FUNCTION__);
+        return Status::ILLEGAL_ARGUMENT;
+    }
+
+    hidl_vec<buffer_handle_t*> allBufPtrs;
+    hidl_vec<int> allFences;
+    bool hasInputBuf = (request.inputBuffer.streamId != -1 &&
+            request.inputBuffer.bufferId != 0);
+    size_t numOutputBufs = request.outputBuffers.size();
+    size_t numBufs = numOutputBufs + (hasInputBuf ? 1 : 0);
+
+    if (numOutputBufs == 0) {
+        ALOGE("%s: capture request must have at least one output buffer!", __FUNCTION__);
+        return Status::ILLEGAL_ARGUMENT;
+    }
+
+    status = importRequest(request, allBufPtrs, allFences);
+    if (status != Status::OK) {
+        return status;
+    }
+
+    hidl_vec<camera3_stream_buffer_t> outHalBufs;
+    outHalBufs.resize(numOutputBufs);
+    bool aeCancelTriggerNeeded = false;
+    ::android::hardware::camera::common::V1_0::helper::CameraMetadata settingsOverride;
+    {
+        Mutex::Autolock _l(mInflightLock);
+        if (hasInputBuf) {
+            auto streamId = request.inputBuffer.streamId;
+            auto key = std::make_pair(request.inputBuffer.streamId, request.frameNumber);
+            auto& bufCache = mInflightBuffers[key] = camera3_stream_buffer_t{};
+            convertFromHidl(
+                    allBufPtrs[numOutputBufs], request.inputBuffer.status,
+                    &mStreamMap[request.inputBuffer.streamId], allFences[numOutputBufs],
+                    &bufCache);
+            bufCache.stream->physical_camera_id = mPhysicalCameraIdMap[streamId].c_str();
+            halRequest.input_buffer = &bufCache;
+        } else {
+            halRequest.input_buffer = nullptr;
+        }
+
+        halRequest.num_output_buffers = numOutputBufs;
+        for (size_t i = 0; i < numOutputBufs; i++) {
+            auto streamId = request.outputBuffers[i].streamId;
+            auto key = std::make_pair(streamId, request.frameNumber);
+            auto& bufCache = mInflightBuffers[key] = camera3_stream_buffer_t{};
+            convertFromHidl(
+                    allBufPtrs[i], request.outputBuffers[i].status,
+                    &mStreamMap[streamId], allFences[i],
+                    &bufCache);
+            bufCache.stream->physical_camera_id = mPhysicalCameraIdMap[streamId].c_str();
+            outHalBufs[i] = bufCache;
+        }
+        halRequest.output_buffers = outHalBufs.data();
+
+        AETriggerCancelOverride triggerOverride;
+        aeCancelTriggerNeeded = handleAePrecaptureCancelRequestLocked(
+                halRequest, &settingsOverride /*out*/, &triggerOverride/*out*/);
+        if (aeCancelTriggerNeeded) {
+            mInflightAETriggerOverrides[halRequest.frame_number] =
+                    triggerOverride;
+            halRequest.settings = settingsOverride.getAndLock();
+        }
+    }
+
+    ATRACE_ASYNC_BEGIN("frame capture", request.frameNumber);
+    ATRACE_BEGIN("camera3->process_capture_request");
+    status_t ret = mDevice->ops->process_capture_request(mDevice, &halRequest);
+    ATRACE_END();
+    if (aeCancelTriggerNeeded) {
+        settingsOverride.unlock(halRequest.settings);
+    }
+    if (ret != OK) {
+        Mutex::Autolock _l(mInflightLock);
+        ALOGE("%s: HAL process_capture_request call failed!", __FUNCTION__);
+
+        cleanupInflightFences(allFences, numBufs);
+        if (hasInputBuf) {
+            auto key = std::make_pair(request.inputBuffer.streamId, request.frameNumber);
+            mInflightBuffers.erase(key);
+        }
+        for (size_t i = 0; i < numOutputBufs; i++) {
+            auto key = std::make_pair(request.outputBuffers[i].streamId, request.frameNumber);
+            mInflightBuffers.erase(key);
+        }
+        if (aeCancelTriggerNeeded) {
+            mInflightAETriggerOverrides.erase(request.frameNumber);
+        }
+        return Status::INTERNAL_ERROR;
+    }
+
+    mFirstRequest = false;
+    return Status::OK;
+}
+
 } // namespace implementation
 }  // namespace V3_4
 }  // namespace device
diff --git a/camera/device/3.4/default/convert.cpp b/camera/device/3.4/default/convert.cpp
new file mode 100644
index 0000000..f12230c
--- /dev/null
+++ b/camera/device/3.4/default/convert.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2018 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 "android.hardware.camera.device@3.4-convert-impl"
+#include <log/log.h>
+
+#include <cstring>
+#include "include/convert.h"
+
+namespace android {
+namespace hardware {
+namespace camera {
+namespace device {
+namespace V3_4 {
+namespace implementation {
+
+using ::android::hardware::graphics::common::V1_0::Dataspace;
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+using ::android::hardware::camera::device::V3_2::BufferUsageFlags;
+
+void convertToHidl(const Camera3Stream* src, HalStream* dst) {
+    V3_3::implementation::convertToHidl(src, &dst->v3_3);
+    dst->physicalCameraId = src->physical_camera_id;
+}
+
+void convertToHidl(const camera3_stream_configuration_t& src, HalStreamConfiguration* dst) {
+    dst->streams.resize(src.num_streams);
+    for (uint32_t i = 0; i < src.num_streams; i++) {
+        convertToHidl(static_cast<Camera3Stream*>(src.streams[i]), &dst->streams[i]);
+    }
+    return;
+}
+
+void convertFromHidl(const Stream &src, Camera3Stream* dst) {
+    V3_2::implementation::convertFromHidl(src.v3_2, dst);
+    // Initialize physical_camera_id
+    dst->physical_camera_id = nullptr;
+    return;
+}
+
+}  // namespace implementation
+}  // namespace V3_4
+}  // namespace device
+}  // namespace camera
+}  // namespace hardware
+}  // namespace android
diff --git a/camera/device/3.4/default/include/convert.h b/camera/device/3.4/default/include/convert.h
new file mode 100644
index 0000000..e8e3951
--- /dev/null
+++ b/camera/device/3.4/default/include/convert.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#ifndef HARDWARE_INTERFACES_CAMERA_DEVICE_V3_4_DEFAULT_INCLUDE_CONVERT_H_
+#define HARDWARE_INTERFACES_CAMERA_DEVICE_V3_4_DEFAULT_INCLUDE_CONVERT_H_
+
+#include <android/hardware/camera/device/3.4/types.h>
+#include "hardware/camera3.h"
+#include "../../3.3/default/include/convert.h"
+
+namespace android {
+namespace hardware {
+namespace camera {
+namespace device {
+namespace V3_4 {
+namespace implementation {
+
+using ::android::hardware::camera::device::V3_2::implementation::Camera3Stream;
+
+void convertToHidl(const Camera3Stream* src, HalStream* dst);
+
+void convertToHidl(const camera3_stream_configuration_t& src, HalStreamConfiguration* dst);
+
+void convertFromHidl(const Stream &src, Camera3Stream* dst);
+
+}  // namespace implementation
+}  // namespace V3_4
+}  // namespace device
+}  // namespace camera
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HARDWARE_INTERFACES_CAMERA_DEVICE_V3_4_DEFAULT_INCLUDE_CONVERT_H_
diff --git a/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h b/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h
index bff1734..83b3afe 100644
--- a/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h
+++ b/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2017-2018 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.
@@ -18,7 +18,6 @@
 #define ANDROID_HARDWARE_CAMERA_DEVICE_V3_4_CAMERADEVICE3SESSION_H
 
 #include <android/hardware/camera/device/3.2/ICameraDevice.h>
-#include <android/hardware/camera/device/3.3/ICameraDeviceSession.h>
 #include <android/hardware/camera/device/3.4/ICameraDeviceSession.h>
 #include <../../3.3/default/CameraDeviceSession.h>
 #include <../../3.3/default/include/convert.h>
@@ -43,8 +42,9 @@
 
 using namespace ::android::hardware::camera::device;
 using ::android::hardware::camera::device::V3_2::CaptureRequest;
-using ::android::hardware::camera::device::V3_2::StreamConfiguration;
-using ::android::hardware::camera::device::V3_3::HalStreamConfiguration;
+using ::android::hardware::camera::device::V3_2::StreamType;
+using ::android::hardware::camera::device::V3_4::StreamConfiguration;
+using ::android::hardware::camera::device::V3_4::HalStreamConfiguration;
 using ::android::hardware::camera::device::V3_4::ICameraDeviceSession;
 using ::android::hardware::camera::common::V1_0::Status;
 using ::android::hardware::camera::common::V1_0::helper::HandleImporter;
@@ -75,8 +75,22 @@
     // New methods for v3.4
 
     Return<void> configureStreams_3_4(
-            const V3_4::StreamConfiguration& requestedConfiguration,
-            ICameraDeviceSession::configureStreams_3_3_cb _hidl_cb);
+            const StreamConfiguration& requestedConfiguration,
+            ICameraDeviceSession::configureStreams_3_4_cb _hidl_cb);
+
+    bool preProcessConfigurationLocked_3_4(
+            const StreamConfiguration& requestedConfiguration,
+            camera3_stream_configuration_t *stream_list /*out*/,
+            hidl_vec<camera3_stream_t*> *streams /*out*/);
+    void postProcessConfigurationLocked_3_4(const StreamConfiguration& requestedConfiguration);
+
+    Return<void> processCaptureRequest_3_4(
+            const hidl_vec<CaptureRequest>& requests,
+            const hidl_vec<V3_2::BufferCache>& cachesToRemove,
+            ICameraDeviceSession::processCaptureRequest_cb _hidl_cb);
+    Status processOneCaptureRequest_3_4(const CaptureRequest& request);
+
+    std::map<int, std::string> mPhysicalCameraIdMap;
 private:
 
     struct TrampolineSessionInterface_3_4 : public ICameraDeviceSession {
@@ -90,7 +104,7 @@
         }
 
         virtual Return<void> configureStreams(
-                const StreamConfiguration& requestedConfiguration,
+                const V3_2::StreamConfiguration& requestedConfiguration,
                 V3_3::ICameraDeviceSession::configureStreams_cb _hidl_cb) override {
             return mParent->configureStreams(requestedConfiguration, _hidl_cb);
         }
@@ -98,7 +112,7 @@
         virtual Return<void> processCaptureRequest(const hidl_vec<V3_2::CaptureRequest>& requests,
                 const hidl_vec<V3_2::BufferCache>& cachesToRemove,
                 V3_3::ICameraDeviceSession::processCaptureRequest_cb _hidl_cb) override {
-            return mParent->processCaptureRequest(requests, cachesToRemove, _hidl_cb);
+            return mParent->processCaptureRequest_3_4(requests, cachesToRemove, _hidl_cb);
         }
 
         virtual Return<void> getCaptureRequestMetadataQueue(
@@ -120,14 +134,14 @@
         }
 
         virtual Return<void> configureStreams_3_3(
-                const StreamConfiguration& requestedConfiguration,
+                const V3_2::StreamConfiguration& requestedConfiguration,
                 configureStreams_3_3_cb _hidl_cb) override {
             return mParent->configureStreams_3_3(requestedConfiguration, _hidl_cb);
         }
 
         virtual Return<void> configureStreams_3_4(
-                const V3_4::StreamConfiguration& requestedConfiguration,
-                configureStreams_3_3_cb _hidl_cb) override {
+                const StreamConfiguration& requestedConfiguration,
+                configureStreams_3_4_cb _hidl_cb) override {
             return mParent->configureStreams_3_4(requestedConfiguration, _hidl_cb);
         }
 
diff --git a/camera/device/3.4/types.hal b/camera/device/3.4/types.hal
index c822717..acad093 100644
--- a/camera/device/3.4/types.hal
+++ b/camera/device/3.4/types.hal
@@ -16,19 +16,68 @@
 
 package android.hardware.camera.device@3.4;
 
-import @3.2::StreamConfiguration;
 import @3.2::types;
+import @3.2::StreamConfigurationMode;
+import @3.2::Stream;
+import @3.3::HalStream;
+import @3.2::CameraMetadata;
+
+/**
+ * Stream:
+ *
+ * A descriptor for a single camera input or output stream. A stream is defined
+ * by the framework by its buffer resolution and format, and additionally by the
+ * HAL with the gralloc usage flags and the maximum in-flight buffer count.
+ *
+ * This version extends the @3.2 Stream with the physicalCameraId field.
+ */
+struct Stream {
+    /**
+     * The definition of Stream from the prior version
+     */
+    @3.2::Stream v3_2;
+
+    /**
+     * The physical camera id this stream belongs to.
+     *
+     * If the camera device is not a logical multi camera, or if the camera is a logical
+     * multi camera but the stream is not a physical output stream, this field will point to a
+     * 0-length string.
+     *
+     * A logical multi camera is a camera device backed by multiple physical cameras that
+     * are also exposed to the application. And for a logical multi camera, a physical output
+     * stream is an output stream specifically requested on an underlying physical camera.
+     *
+     * A logical camera is a camera device backed by multiple physical camera
+     * devices. And a physical stream is a stream specifically requested on a
+     * underlying physical camera device.
+     *
+     * For an input stream, this field is guaranteed to be a 0-length string.
+     *
+     * When not empty, this field is the <id> field of one of the full-qualified device
+     * instance names returned by getCameraIdList().
+     */
+    string physicalCameraId;
+};
 
 /**
  * StreamConfiguration:
  *
- * Identical to @3.2::StreamConfiguration, except that it contains session parameters.
+ * Identical to @3.2::StreamConfiguration, except that it contains session
+ * parameters, and the streams vector contains @3.4::Stream.
  */
 struct StreamConfiguration {
     /**
-     * The definition of StreamConfiguration from the prior version.
+     * An array of camera stream pointers, defining the input/output
+     * configuration for the camera HAL device.
      */
-    @3.2::StreamConfiguration v3_2;
+    vec<Stream> streams;
+
+    /**
+     * The definition of operation mode from prior version.
+     *
+     */
+    StreamConfigurationMode operationMode;
 
     /**
      * Session wide camera parameters.
@@ -44,3 +93,43 @@
      */
     CameraMetadata sessionParams;
 };
+
+/**
+ * HalStream:
+ *
+ * The camera HAL's response to each requested stream configuration.
+ *
+ * This version extends the @3.3 HalStream with the physicalCameraId
+ * field
+ */
+struct HalStream {
+    /**
+     * The definition of HalStream from the prior version.
+     */
+    @3.3::HalStream v3_3;
+
+    /**
+     * The physical camera id the current Hal stream belongs to.
+     *
+     * If current camera device isn't a logical camera, or the Hal stream isn't
+     * from a physical camera of the logical camera, this must be an empty
+     * string.
+     *
+     * A logical camera is a camera device backed by multiple physical camera
+     * devices.
+     *
+     * When not empty, this field is the <id> field of one of the full-qualified device
+     * instance names returned by getCameraIdList().
+     */
+    string physicalCameraId;
+};
+
+/**
+ * HalStreamConfiguration:
+ *
+ * Identical to @3.3::HalStreamConfiguration, except that it contains @3.4::HalStream entries.
+ *
+ */
+struct HalStreamConfiguration {
+    vec<HalStream> streams;
+};
diff --git a/camera/metadata/3.3/Android.bp b/camera/metadata/3.3/Android.bp
index 3f1dabc..23c1036 100644
--- a/camera/metadata/3.3/Android.bp
+++ b/camera/metadata/3.3/Android.bp
@@ -17,6 +17,9 @@
         "CameraMetadataEnumAndroidControlCaptureIntent",
         "CameraMetadataEnumAndroidLensPoseReference",
         "CameraMetadataEnumAndroidRequestAvailableCapabilities",
+        "CameraMetadataEnumAndroidLogicalMultiCameraSensorSyncType",
+        "CameraMetadataSection",
+        "CameraMetadataSectionStart",
         "CameraMetadataTag",
     ],
     gen_java: true,
diff --git a/camera/metadata/3.3/types.hal b/camera/metadata/3.3/types.hal
index 5c01e35..3182905 100644
--- a/camera/metadata/3.3/types.hal
+++ b/camera/metadata/3.3/types.hal
@@ -25,7 +25,30 @@
 /* Include definitions from all prior minor HAL metadata revisions */
 import android.hardware.camera.metadata@3.2;
 
-// No new metadata sections added in this revision
+/**
+ * Top level hierarchy definitions for camera metadata. *_INFO sections are for
+ * the static metadata that can be retrived without opening the camera device.
+ */
+enum CameraMetadataSection : @3.2::CameraMetadataSection {
+    ANDROID_LOGICAL_MULTI_CAMERA =
+        android.hardware.camera.metadata@3.2::CameraMetadataSection:ANDROID_SECTION_COUNT,
+
+    ANDROID_SECTION_COUNT_3_3,
+
+    VENDOR_SECTION_3_3 = 0x8000,
+
+};
+
+/**
+ * Hierarchy positions in enum space. All vendor extension sections must be
+ * defined with tag >= VENDOR_SECTION_START
+ */
+enum CameraMetadataSectionStart : android.hardware.camera.metadata@3.2::CameraMetadataSectionStart {
+    ANDROID_LOGICAL_MULTI_CAMERA_START = CameraMetadataSection:ANDROID_LOGICAL_MULTI_CAMERA << 16,
+
+    VENDOR_SECTION_START_3_3 = CameraMetadataSection:VENDOR_SECTION_3_3 << 16,
+
+};
 
 /**
  * Main enumeration for defining camera metadata tags added in this revision
@@ -62,6 +85,44 @@
 
     ANDROID_REQUEST_END_3_3,
 
+    /** android.statistics.oisDataMode [dynamic, enum, public]
+     *
+     * <p>Whether the camera device outputs the OIS data in output
+     * result metadata.</p>
+     */
+    ANDROID_STATISTICS_OIS_DATA_MODE = android.hardware.camera.metadata@3.2::CameraMetadataTag:ANDROID_STATISTICS_END,
+
+    /** android.statistics.oisTimestamps [dynamic, int64[], public]
+     *
+     * <p>An array of timestamps of OIS samples, in nanoseconds.</p>
+     */
+    ANDROID_STATISTICS_OIS_TIMESTAMPS,
+
+    /** android.statistics.oisXShifts [dynamic, float[], public]
+     *
+     * <p>An array of shifts of OIS samples, in x direction.</p>
+     */
+    ANDROID_STATISTICS_OIS_X_SHIFTS,
+
+    /** android.statistics.oisYShifts [dynamic, float[], public]
+     *
+     * <p>An array of shifts of OIS samples, in y direction.</p>
+     */
+    ANDROID_STATISTICS_OIS_Y_SHIFTS,
+
+    ANDROID_STATISTICS_END_3_3,
+
+    /** android.statistics.info.availableOisDataModes [static, byte[], public]
+     *
+     * <p>List of OIS data output modes for ANDROID_STATISTICS_OIS_DATA_MODE that
+     * are supported by this camera device.</p>
+     *
+     * @see ANDROID_STATISTICS_OIS_DATA_MODE
+     */
+    ANDROID_STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES = android.hardware.camera.metadata@3.2::CameraMetadataTag:ANDROID_STATISTICS_INFO_END,
+
+    ANDROID_STATISTICS_INFO_END_3_3,
+
     /** android.info.version [static, byte, public]
      *
      * <p>A short string for manufacturer version information about the camera device, such as
@@ -71,6 +132,20 @@
 
     ANDROID_INFO_END_3_3,
 
+    /** android.logicalMultiCamera.physicalIds [static, byte[], hidden]
+     *
+     * <p>String containing the ids of the underlying physical cameras.</p>
+     */
+    ANDROID_LOGICAL_MULTI_CAMERA_PHYSICAL_IDS = CameraMetadataSectionStart:ANDROID_LOGICAL_MULTI_CAMERA_START,
+
+    /** android.logicalMultiCamera.sensorSyncType [static, enum, public]
+     *
+     * <p>The accuracy of frame timestamp synchronization between physical cameras</p>
+     */
+    ANDROID_LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE,
+
+    ANDROID_LOGICAL_MULTI_CAMERA_END_3_3,
+
 };
 
 /*
@@ -115,4 +190,29 @@
 enum CameraMetadataEnumAndroidRequestAvailableCapabilities :
         @3.2::CameraMetadataEnumAndroidRequestAvailableCapabilities {
     ANDROID_REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING,
+    ANDROID_REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA,
+};
+
+/** android.logicalMultiCamera.sensorSyncType enumeration values
+ * @see ANDROID_LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
+ */
+enum CameraMetadataEnumAndroidLogicalMultiCameraSensorSyncType : uint32_t {
+    ANDROID_LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_APPROXIMATE,
+    ANDROID_LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_CALIBRATED,
+};
+
+/** android.info.supportedHardwareLevel enumeration values added since v3.2
+ * @see ANDROID_INFO_SUPPORTED_HARDWARE_LEVEL
+ */
+enum CameraMetadataEnumAndroidInfoSupportedHardwareLevel :
+        @3.2::CameraMetadataEnumAndroidInfoSupportedHardwareLevel {
+    ANDROID_INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL,
+};
+
+/** android.statistics.oisDataMode enumeration values
+ * @see ANDROID_STATISTICS_OIS_DATA_MODE
+ */
+enum CameraMetadataEnumAndroidStatisticsOisDataMode : uint32_t {
+    ANDROID_STATISTICS_OIS_DATA_MODE_OFF,
+    ANDROID_STATISTICS_OIS_DATA_MODE_ON,
 };
diff --git a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
index d44a54a..eb15766 100644
--- a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
+++ b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2016-2018 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.
@@ -47,6 +47,7 @@
 #include <VtsHalHidlTargetTestBase.h>
 #include <VtsHalHidlTargetTestEnvBase.h>
 
+using namespace ::android::hardware::camera::device;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
 using ::android::hardware::hidl_handle;
@@ -78,7 +79,6 @@
 using ::android::hardware::camera::device::V3_2::ICameraDeviceSession;
 using ::android::hardware::camera::device::V3_2::NotifyMsg;
 using ::android::hardware::camera::device::V3_2::RequestTemplate;
-using ::android::hardware::camera::device::V3_2::Stream;
 using ::android::hardware::camera::device::V3_2::StreamType;
 using ::android::hardware::camera::device::V3_2::StreamRotation;
 using ::android::hardware::camera::device::V3_2::StreamConfiguration;
@@ -620,11 +620,16 @@
     void castSession(const sp<ICameraDeviceSession> &session, int32_t deviceVersion,
             sp<device::V3_3::ICameraDeviceSession> *session3_3 /*out*/,
             sp<device::V3_4::ICameraDeviceSession> *session3_4 /*out*/);
+    void createStreamConfiguration(const ::android::hardware::hidl_vec<V3_2::Stream>& streams3_2,
+            StreamConfigurationMode configMode,
+            ::android::hardware::camera::device::V3_2::StreamConfiguration *config3_2,
+            ::android::hardware::camera::device::V3_4::StreamConfiguration *config3_4);
+
     void configurePreviewStream(const std::string &name, int32_t deviceVersion,
             sp<ICameraProvider> provider,
             const AvailableStream *previewThreshold,
             sp<ICameraDeviceSession> *session /*out*/,
-            Stream *previewStream /*out*/,
+            V3_2::Stream *previewStream /*out*/,
             HalStreamConfiguration *halStreamConfig /*out*/,
             bool *supportsPartialResults /*out*/,
             uint32_t *partialResultCount /*out*/);
@@ -2353,7 +2358,8 @@
 
         int32_t streamId = 0;
         for (auto& it : outputStreams) {
-            Stream stream = {streamId,
+            V3_2::Stream stream3_2;
+            stream3_2 = {streamId,
                              StreamType::OUTPUT,
                              static_cast<uint32_t>(it.width),
                              static_cast<uint32_t>(it.height),
@@ -2361,25 +2367,27 @@
                              GRALLOC1_CONSUMER_USAGE_HWCOMPOSER,
                              0,
                              StreamRotation::ROTATION_0};
-            ::android::hardware::hidl_vec<Stream> streams = {stream};
-            ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-            config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+            ::android::hardware::hidl_vec<V3_2::Stream> streams3_2 = {stream3_2};
+            ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
+            ::android::hardware::camera::device::V3_2::StreamConfiguration config3_2;
+            createStreamConfiguration(streams3_2, StreamConfigurationMode::NORMAL_MODE,
+                                      &config3_2, &config3_4);
             if (session3_4 != nullptr) {
-                ret = session3_4->configureStreams_3_4(config,
-                        [streamId](Status s, device::V3_3::HalStreamConfiguration halConfig) {
+                ret = session3_4->configureStreams_3_4(config3_4,
+                        [streamId](Status s, device::V3_4::HalStreamConfiguration halConfig) {
                             ASSERT_EQ(Status::OK, s);
                             ASSERT_EQ(1u, halConfig.streams.size());
-                            ASSERT_EQ(halConfig.streams[0].v3_2.id, streamId);
+                            ASSERT_EQ(halConfig.streams[0].v3_3.v3_2.id, streamId);
                         });
             } else if (session3_3 != nullptr) {
-                ret = session3_3->configureStreams_3_3(config.v3_2,
+                ret = session3_3->configureStreams_3_3(config3_2,
                         [streamId](Status s, device::V3_3::HalStreamConfiguration halConfig) {
                             ASSERT_EQ(Status::OK, s);
                             ASSERT_EQ(1u, halConfig.streams.size());
                             ASSERT_EQ(halConfig.streams[0].v3_2.id, streamId);
                         });
             } else {
-                ret = session->configureStreams(config.v3_2,
+                ret = session->configureStreams(config3_2,
                         [streamId](Status s, HalStreamConfiguration halConfig) {
                             ASSERT_EQ(Status::OK, s);
                             ASSERT_EQ(1u, halConfig.streams.size());
@@ -2424,7 +2432,7 @@
         ASSERT_NE(0u, outputStreams.size());
 
         int32_t streamId = 0;
-        Stream stream = {streamId++,
+        V3_2::Stream stream3_2 = {streamId++,
                          StreamType::OUTPUT,
                          static_cast<uint32_t>(0),
                          static_cast<uint32_t>(0),
@@ -2432,23 +2440,25 @@
                          GRALLOC1_CONSUMER_USAGE_HWCOMPOSER,
                          0,
                          StreamRotation::ROTATION_0};
-        ::android::hardware::hidl_vec<Stream> streams = {stream};
-        ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-        config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+        ::android::hardware::hidl_vec<V3_2::Stream> streams = {stream3_2};
+        ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
+        ::android::hardware::camera::device::V3_2::StreamConfiguration config3_2;
+        createStreamConfiguration(streams, StreamConfigurationMode::NORMAL_MODE,
+                                  &config3_2, &config3_4);
         if(session3_4 != nullptr) {
-            ret = session3_4->configureStreams_3_4(config,
-                [](Status s, device::V3_3::HalStreamConfiguration) {
+            ret = session3_4->configureStreams_3_4(config3_4,
+                [](Status s, device::V3_4::HalStreamConfiguration) {
                     ASSERT_TRUE((Status::ILLEGAL_ARGUMENT == s) ||
                             (Status::INTERNAL_ERROR == s));
                 });
         } else if(session3_3 != nullptr) {
-            ret = session3_3->configureStreams_3_3(config.v3_2,
+            ret = session3_3->configureStreams_3_3(config3_2,
                 [](Status s, device::V3_3::HalStreamConfiguration) {
                     ASSERT_TRUE((Status::ILLEGAL_ARGUMENT == s) ||
                             (Status::INTERNAL_ERROR == s));
                 });
         } else {
-            ret = session->configureStreams(config.v3_2,
+            ret = session->configureStreams(config3_2,
                 [](Status s, HalStreamConfiguration) {
                     ASSERT_TRUE((Status::ILLEGAL_ARGUMENT == s) ||
                             (Status::INTERNAL_ERROR == s));
@@ -2456,7 +2466,7 @@
         }
         ASSERT_TRUE(ret.isOk());
 
-        stream = {streamId++,
+        stream3_2 = {streamId++,
                   StreamType::OUTPUT,
                   static_cast<uint32_t>(UINT32_MAX),
                   static_cast<uint32_t>(UINT32_MAX),
@@ -2464,20 +2474,21 @@
                   GRALLOC1_CONSUMER_USAGE_HWCOMPOSER,
                   0,
                   StreamRotation::ROTATION_0};
-        streams[0] = stream;
-        config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+        streams[0] = stream3_2;
+        createStreamConfiguration(streams, StreamConfigurationMode::NORMAL_MODE,
+                &config3_2, &config3_4);
         if(session3_4 != nullptr) {
-            ret = session3_4->configureStreams_3_4(config, [](Status s,
-                        device::V3_3::HalStreamConfiguration) {
+            ret = session3_4->configureStreams_3_4(config3_4, [](Status s,
+                        device::V3_4::HalStreamConfiguration) {
                     ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                 });
         } else if(session3_3 != nullptr) {
-            ret = session3_3->configureStreams_3_3(config.v3_2, [](Status s,
+            ret = session3_3->configureStreams_3_3(config3_2, [](Status s,
                         device::V3_3::HalStreamConfiguration) {
                     ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                 });
         } else {
-            ret = session->configureStreams(config.v3_2, [](Status s,
+            ret = session->configureStreams(config3_2, [](Status s,
                         HalStreamConfiguration) {
                     ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                 });
@@ -2485,7 +2496,7 @@
         ASSERT_TRUE(ret.isOk());
 
         for (auto& it : outputStreams) {
-            stream = {streamId++,
+            stream3_2 = {streamId++,
                       StreamType::OUTPUT,
                       static_cast<uint32_t>(it.width),
                       static_cast<uint32_t>(it.height),
@@ -2493,27 +2504,28 @@
                       GRALLOC1_CONSUMER_USAGE_HWCOMPOSER,
                       0,
                       StreamRotation::ROTATION_0};
-            streams[0] = stream;
-            config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+            streams[0] = stream3_2;
+            createStreamConfiguration(streams, StreamConfigurationMode::NORMAL_MODE,
+                    &config3_2, &config3_4);
             if(session3_4 != nullptr) {
-                ret = session3_4->configureStreams_3_4(config,
-                        [](Status s, device::V3_3::HalStreamConfiguration) {
+                ret = session3_4->configureStreams_3_4(config3_4,
+                        [](Status s, device::V3_4::HalStreamConfiguration) {
                             ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                         });
             } else if(session3_3 != nullptr) {
-                ret = session3_3->configureStreams_3_3(config.v3_2,
+                ret = session3_3->configureStreams_3_3(config3_2,
                         [](Status s, device::V3_3::HalStreamConfiguration) {
                             ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                         });
             } else {
-                ret = session->configureStreams(config.v3_2,
+                ret = session->configureStreams(config3_2,
                         [](Status s, HalStreamConfiguration) {
                             ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                         });
             }
             ASSERT_TRUE(ret.isOk());
 
-            stream = {streamId++,
+            stream3_2 = {streamId++,
                       StreamType::OUTPUT,
                       static_cast<uint32_t>(it.width),
                       static_cast<uint32_t>(it.height),
@@ -2521,20 +2533,21 @@
                       GRALLOC1_CONSUMER_USAGE_HWCOMPOSER,
                       0,
                       static_cast<StreamRotation>(UINT32_MAX)};
-            streams[0] = stream;
-            config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+            streams[0] = stream3_2;
+            createStreamConfiguration(streams, StreamConfigurationMode::NORMAL_MODE,
+                    &config3_2, &config3_4);
             if(session3_4 != nullptr) {
-                ret = session3_4->configureStreams_3_4(config,
-                        [](Status s, device::V3_3::HalStreamConfiguration) {
+                ret = session3_4->configureStreams_3_4(config3_4,
+                        [](Status s, device::V3_4::HalStreamConfiguration) {
                             ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                         });
             } else if(session3_3 != nullptr) {
-                ret = session3_3->configureStreams_3_3(config.v3_2,
+                ret = session3_3->configureStreams_3_3(config3_2,
                         [](Status s, device::V3_3::HalStreamConfiguration) {
                             ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                         });
             } else {
-                ret = session->configureStreams(config.v3_2,
+                ret = session->configureStreams(config3_2,
                         [](Status s, HalStreamConfiguration) {
                             ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                         });
@@ -2603,7 +2616,7 @@
                       getAvailableOutputStreams(staticMeta, outputStreams,
                               &outputThreshold));
             for (auto& outputIter : outputStreams) {
-                Stream zslStream = {streamId++,
+                V3_2::Stream zslStream = {streamId++,
                                     StreamType::OUTPUT,
                                     static_cast<uint32_t>(input.width),
                                     static_cast<uint32_t>(input.height),
@@ -2611,7 +2624,7 @@
                                     GRALLOC_USAGE_HW_CAMERA_ZSL,
                                     0,
                                     StreamRotation::ROTATION_0};
-                Stream inputStream = {streamId++,
+                V3_2::Stream inputStream = {streamId++,
                                       StreamType::INPUT,
                                       static_cast<uint32_t>(input.width),
                                       static_cast<uint32_t>(input.height),
@@ -2619,7 +2632,7 @@
                                       0,
                                       0,
                                       StreamRotation::ROTATION_0};
-                Stream outputStream = {streamId++,
+                V3_2::Stream outputStream = {streamId++,
                                        StreamType::OUTPUT,
                                        static_cast<uint32_t>(outputIter.width),
                                        static_cast<uint32_t>(outputIter.height),
@@ -2628,24 +2641,26 @@
                                        0,
                                        StreamRotation::ROTATION_0};
 
-                ::android::hardware::hidl_vec<Stream> streams = {inputStream, zslStream,
+                ::android::hardware::hidl_vec<V3_2::Stream> streams = {inputStream, zslStream,
                                                                  outputStream};
-                ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-                config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+                ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
+                ::android::hardware::camera::device::V3_2::StreamConfiguration config3_2;
+                createStreamConfiguration(streams, StreamConfigurationMode::NORMAL_MODE,
+                                          &config3_2, &config3_4);
                 if (session3_4 != nullptr) {
-                    ret = session3_4->configureStreams_3_4(config,
-                            [](Status s, device::V3_3::HalStreamConfiguration halConfig) {
+                    ret = session3_4->configureStreams_3_4(config3_4,
+                            [](Status s, device::V3_4::HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(3u, halConfig.streams.size());
                             });
                 } else if (session3_3 != nullptr) {
-                    ret = session3_3->configureStreams_3_3(config.v3_2,
+                    ret = session3_3->configureStreams_3_3(config3_2,
                             [](Status s, device::V3_3::HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(3u, halConfig.streams.size());
                             });
                 } else {
-                    ret = session->configureStreams(config.v3_2,
+                    ret = session->configureStreams(config3_2,
                             [](Status s, HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(3u, halConfig.streams.size());
@@ -2733,7 +2748,8 @@
                 &previewThreshold));
         ASSERT_NE(0u, outputPreviewStreams.size());
 
-        Stream previewStream = {0,
+        V3_4::Stream previewStream;
+        previewStream.v3_2 = {0,
                                 StreamType::OUTPUT,
                                 static_cast<uint32_t>(outputPreviewStreams[0].width),
                                 static_cast<uint32_t>(outputPreviewStreams[0].height),
@@ -2741,15 +2757,16 @@
                                 GRALLOC1_CONSUMER_USAGE_HWCOMPOSER,
                                 0,
                                 StreamRotation::ROTATION_0};
-        ::android::hardware::hidl_vec<Stream> streams = {previewStream};
+        ::android::hardware::hidl_vec<V3_4::Stream> streams = {previewStream};
         ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-        config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+        config.streams = streams;
+        config.operationMode = StreamConfigurationMode::NORMAL_MODE;
         const camera_metadata_t *sessionParamsBuffer = sessionParams.getAndLock();
         config.sessionParams.setToExternal(
                 reinterpret_cast<uint8_t *> (const_cast<camera_metadata_t *> (sessionParamsBuffer)),
                 get_camera_metadata_size(sessionParamsBuffer));
         ret = session3_4->configureStreams_3_4(config,
-                [](Status s, device::V3_3::HalStreamConfiguration halConfig) {
+                [](Status s, device::V3_4::HalStreamConfiguration halConfig) {
                     ASSERT_EQ(Status::OK, s);
                     ASSERT_EQ(1u, halConfig.streams.size());
                 });
@@ -2804,7 +2821,7 @@
         int32_t streamId = 0;
         for (auto& blobIter : outputBlobStreams) {
             for (auto& previewIter : outputPreviewStreams) {
-                Stream previewStream = {streamId++,
+                V3_2::Stream previewStream = {streamId++,
                                         StreamType::OUTPUT,
                                         static_cast<uint32_t>(previewIter.width),
                                         static_cast<uint32_t>(previewIter.height),
@@ -2812,7 +2829,7 @@
                                         GRALLOC1_CONSUMER_USAGE_HWCOMPOSER,
                                         0,
                                         StreamRotation::ROTATION_0};
-                Stream blobStream = {streamId++,
+                V3_2::Stream blobStream = {streamId++,
                                      StreamType::OUTPUT,
                                      static_cast<uint32_t>(blobIter.width),
                                      static_cast<uint32_t>(blobIter.height),
@@ -2820,24 +2837,26 @@
                                      GRALLOC1_CONSUMER_USAGE_CPU_READ,
                                      0,
                                      StreamRotation::ROTATION_0};
-                ::android::hardware::hidl_vec<Stream> streams = {previewStream,
+                ::android::hardware::hidl_vec<V3_2::Stream> streams = {previewStream,
                                                                  blobStream};
-                ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-                config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+                ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
+                ::android::hardware::camera::device::V3_2::StreamConfiguration config3_2;
+                createStreamConfiguration(streams, StreamConfigurationMode::NORMAL_MODE,
+                                          &config3_2, &config3_4);
                 if (session3_4 != nullptr) {
-                    ret = session3_4->configureStreams_3_4(config,
-                            [](Status s, device::V3_3::HalStreamConfiguration halConfig) {
+                    ret = session3_4->configureStreams_3_4(config3_4,
+                            [](Status s, device::V3_4::HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(2u, halConfig.streams.size());
                             });
                 } else if (session3_3 != nullptr) {
-                    ret = session3_3->configureStreams_3_3(config.v3_2,
+                    ret = session3_3->configureStreams_3_3(config3_2,
                             [](Status s, device::V3_3::HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(2u, halConfig.streams.size());
                             });
                 } else {
-                    ret = session->configureStreams(config.v3_2,
+                    ret = session->configureStreams(config3_2,
                             [](Status s, HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(2u, halConfig.streams.size());
@@ -2890,7 +2909,7 @@
         ASSERT_EQ(Status::OK, rc);
 
         int32_t streamId = 0;
-        Stream stream = {streamId,
+        V3_2::Stream stream = {streamId,
                          StreamType::OUTPUT,
                          static_cast<uint32_t>(hfrStream.width),
                          static_cast<uint32_t>(hfrStream.height),
@@ -2898,25 +2917,27 @@
                          GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER,
                          0,
                          StreamRotation::ROTATION_0};
-        ::android::hardware::hidl_vec<Stream> streams = {stream};
-        ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-        config.v3_2 = {streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE};
+        ::android::hardware::hidl_vec<V3_2::Stream> streams = {stream};
+        ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
+        ::android::hardware::camera::device::V3_2::StreamConfiguration config3_2;
+        createStreamConfiguration(streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE,
+                                  &config3_2, &config3_4);
         if (session3_4 != nullptr) {
-            ret = session3_4->configureStreams_3_4(config,
-                    [streamId](Status s, device::V3_3::HalStreamConfiguration halConfig) {
+            ret = session3_4->configureStreams_3_4(config3_4,
+                    [streamId](Status s, device::V3_4::HalStreamConfiguration halConfig) {
                         ASSERT_EQ(Status::OK, s);
                         ASSERT_EQ(1u, halConfig.streams.size());
-                        ASSERT_EQ(halConfig.streams[0].v3_2.id, streamId);
+                        ASSERT_EQ(halConfig.streams[0].v3_3.v3_2.id, streamId);
                     });
         } else if (session3_3 != nullptr) {
-            ret = session3_3->configureStreams_3_3(config.v3_2,
+            ret = session3_3->configureStreams_3_3(config3_2,
                     [streamId](Status s, device::V3_3::HalStreamConfiguration halConfig) {
                         ASSERT_EQ(Status::OK, s);
                         ASSERT_EQ(1u, halConfig.streams.size());
                         ASSERT_EQ(halConfig.streams[0].v3_2.id, streamId);
                     });
         } else {
-            ret = session->configureStreams(config.v3_2,
+            ret = session->configureStreams(config3_2,
                     [streamId](Status s, HalStreamConfiguration halConfig) {
                         ASSERT_EQ(Status::OK, s);
                         ASSERT_EQ(1u, halConfig.streams.size());
@@ -2934,21 +2955,22 @@
                   0,
                   StreamRotation::ROTATION_0};
         streams[0] = stream;
-        config.v3_2 = {streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE};
+        createStreamConfiguration(streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE,
+                                  &config3_2, &config3_4);
         if (session3_4 != nullptr) {
-            ret = session3_4->configureStreams_3_4(config,
-                    [](Status s, device::V3_3::HalStreamConfiguration) {
+            ret = session3_4->configureStreams_3_4(config3_4,
+                    [](Status s, device::V3_4::HalStreamConfiguration) {
                         ASSERT_TRUE((Status::ILLEGAL_ARGUMENT == s) ||
                                 (Status::INTERNAL_ERROR == s));
                     });
         } else if (session3_3 != nullptr) {
-            ret = session3_3->configureStreams_3_3(config.v3_2,
+            ret = session3_3->configureStreams_3_3(config3_2,
                     [](Status s, device::V3_3::HalStreamConfiguration) {
                         ASSERT_TRUE((Status::ILLEGAL_ARGUMENT == s) ||
                                 (Status::INTERNAL_ERROR == s));
                     });
         } else {
-            ret = session->configureStreams(config.v3_2,
+            ret = session->configureStreams(config3_2,
                     [](Status s, HalStreamConfiguration) {
                         ASSERT_TRUE((Status::ILLEGAL_ARGUMENT == s) ||
                                 (Status::INTERNAL_ERROR == s));
@@ -2965,19 +2987,20 @@
                   0,
                   StreamRotation::ROTATION_0};
         streams[0] = stream;
-        config.v3_2 = {streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE};
+        createStreamConfiguration(streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE,
+                                  &config3_2, &config3_4);
         if (session3_4 != nullptr) {
-            ret = session3_4->configureStreams_3_4(config,
-                    [](Status s, device::V3_3::HalStreamConfiguration) {
+            ret = session3_4->configureStreams_3_4(config3_4,
+                    [](Status s, device::V3_4::HalStreamConfiguration) {
                         ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                     });
         } else if (session3_3 != nullptr) {
-            ret = session3_3->configureStreams_3_3(config.v3_2,
+            ret = session3_3->configureStreams_3_3(config3_2,
                     [](Status s, device::V3_3::HalStreamConfiguration) {
                         ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                     });
         } else {
-            ret = session->configureStreams(config.v3_2,
+            ret = session->configureStreams(config3_2,
                     [](Status s, HalStreamConfiguration) {
                         ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                     });
@@ -2993,19 +3016,20 @@
                   0,
                   StreamRotation::ROTATION_0};
         streams[0] = stream;
-        config.v3_2 = {streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE};
+        createStreamConfiguration(streams, StreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE,
+                                  &config3_2, &config3_4);
         if (session3_4 != nullptr) {
-            ret = session3_4->configureStreams_3_4(config,
-                    [](Status s, device::V3_3::HalStreamConfiguration) {
+            ret = session3_4->configureStreams_3_4(config3_4,
+                    [](Status s, device::V3_4::HalStreamConfiguration) {
                         ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                     });
         } else if (session3_3 != nullptr) {
-            ret = session3_3->configureStreams_3_3(config.v3_2,
+            ret = session3_3->configureStreams_3_3(config3_2,
                     [](Status s, device::V3_3::HalStreamConfiguration) {
                         ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                     });
         } else {
-            ret = session->configureStreams(config.v3_2,
+            ret = session->configureStreams(config3_2,
                     [](Status s, HalStreamConfiguration) {
                         ASSERT_EQ(Status::ILLEGAL_ARGUMENT, s);
                     });
@@ -3062,7 +3086,7 @@
         int32_t streamId = 0;
         for (auto& blobIter : outputBlobStreams) {
             for (auto& videoIter : outputVideoStreams) {
-                Stream videoStream = {streamId++,
+                V3_2::Stream videoStream = {streamId++,
                                       StreamType::OUTPUT,
                                       static_cast<uint32_t>(videoIter.width),
                                       static_cast<uint32_t>(videoIter.height),
@@ -3070,7 +3094,7 @@
                                       GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER,
                                       0,
                                       StreamRotation::ROTATION_0};
-                Stream blobStream = {streamId++,
+                V3_2::Stream blobStream = {streamId++,
                                      StreamType::OUTPUT,
                                      static_cast<uint32_t>(blobIter.width),
                                      static_cast<uint32_t>(blobIter.height),
@@ -3078,23 +3102,25 @@
                                      GRALLOC1_CONSUMER_USAGE_CPU_READ,
                                      0,
                                      StreamRotation::ROTATION_0};
-                ::android::hardware::hidl_vec<Stream> streams = {videoStream, blobStream};
-                ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-                config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+                ::android::hardware::hidl_vec<V3_2::Stream> streams = {videoStream, blobStream};
+                ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
+                ::android::hardware::camera::device::V3_2::StreamConfiguration config3_2;
+                createStreamConfiguration(streams, StreamConfigurationMode::NORMAL_MODE,
+                                          &config3_2, &config3_4);
                 if (session3_4 != nullptr) {
-                    ret = session3_4->configureStreams_3_4(config,
-                            [](Status s, device::V3_3::HalStreamConfiguration halConfig) {
+                    ret = session3_4->configureStreams_3_4(config3_4,
+                            [](Status s, device::V3_4::HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(2u, halConfig.streams.size());
                             });
                 } else if (session3_3 != nullptr) {
-                    ret = session3_3->configureStreams_3_3(config.v3_2,
+                    ret = session3_3->configureStreams_3_3(config3_2,
                             [](Status s, device::V3_3::HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(2u, halConfig.streams.size());
                             });
                 } else {
-                    ret = session->configureStreams(config.v3_2,
+                    ret = session->configureStreams(config3_2,
                             [](Status s, HalStreamConfiguration halConfig) {
                                 ASSERT_EQ(Status::OK, s);
                                 ASSERT_EQ(2u, halConfig.streams.size());
@@ -3129,7 +3155,7 @@
             return;
         }
 
-        Stream previewStream;
+        V3_2::Stream previewStream;
         HalStreamConfiguration halStreamConfig;
         sp<ICameraDeviceSession> session;
         bool supportsPartialResults = false;
@@ -3284,7 +3310,7 @@
             return;
         }
 
-        Stream previewStream;
+        V3_2::Stream previewStream;
         HalStreamConfiguration halStreamConfig;
         sp<ICameraDeviceSession> session;
         bool supportsPartialResults = false;
@@ -3351,7 +3377,7 @@
             return;
         }
 
-        Stream previewStream;
+        V3_2::Stream previewStream;
         HalStreamConfiguration halStreamConfig;
         sp<ICameraDeviceSession> session;
         bool supportsPartialResults = false;
@@ -3415,7 +3441,7 @@
             return;
         }
 
-        Stream previewStream;
+        V3_2::Stream previewStream;
         HalStreamConfiguration halStreamConfig;
         sp<ICameraDeviceSession> session;
         bool supportsPartialResults = false;
@@ -3545,7 +3571,7 @@
             return;
         }
 
-        Stream previewStream;
+        V3_2::Stream previewStream;
         HalStreamConfiguration halStreamConfig;
         sp<ICameraDeviceSession> session;
         bool supportsPartialResults = false;
@@ -3754,12 +3780,31 @@
     return Status::METHOD_NOT_SUPPORTED;
 }
 
+void CameraHidlTest::createStreamConfiguration(
+        const ::android::hardware::hidl_vec<V3_2::Stream>& streams3_2,
+        StreamConfigurationMode configMode,
+        ::android::hardware::camera::device::V3_2::StreamConfiguration *config3_2 /*out*/,
+        ::android::hardware::camera::device::V3_4::StreamConfiguration *config3_4 /*out*/) {
+    ASSERT_NE(nullptr, config3_2);
+    ASSERT_NE(nullptr, config3_4);
+
+    ::android::hardware::hidl_vec<V3_4::Stream> streams3_4(streams3_2.size());
+    size_t idx = 0;
+    for (auto& stream3_2 : streams3_2) {
+        V3_4::Stream stream;
+        stream.v3_2 = stream3_2;
+        streams3_4[idx++] = stream;
+    }
+    *config3_4 = {streams3_4, configMode, {}};
+    *config3_2 = {streams3_2, configMode};
+}
+
 // Open a device session and configure a preview stream.
 void CameraHidlTest::configurePreviewStream(const std::string &name, int32_t deviceVersion,
         sp<ICameraProvider> provider,
         const AvailableStream *previewThreshold,
         sp<ICameraDeviceSession> *session /*out*/,
-        Stream *previewStream /*out*/,
+        V3_2::Stream *previewStream /*out*/,
         HalStreamConfiguration *halStreamConfig /*out*/,
         bool *supportsPartialResults /*out*/,
         uint32_t *partialResultCount /*out*/) {
@@ -3824,26 +3869,35 @@
     ASSERT_EQ(Status::OK, rc);
     ASSERT_FALSE(outputPreviewStreams.empty());
 
-    *previewStream = {0, StreamType::OUTPUT,
+    V3_2::Stream stream3_2 = {0, StreamType::OUTPUT,
             static_cast<uint32_t> (outputPreviewStreams[0].width),
             static_cast<uint32_t> (outputPreviewStreams[0].height),
             static_cast<PixelFormat> (outputPreviewStreams[0].format),
             GRALLOC1_CONSUMER_USAGE_HWCOMPOSER, 0, StreamRotation::ROTATION_0};
-    ::android::hardware::hidl_vec<Stream> streams = {*previewStream};
-    ::android::hardware::camera::device::V3_4::StreamConfiguration config;
-    config.v3_2 = {streams, StreamConfigurationMode::NORMAL_MODE};
+    ::android::hardware::hidl_vec<V3_2::Stream> streams3_2 = {stream3_2};
+    ::android::hardware::camera::device::V3_2::StreamConfiguration config3_2;
+    ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
+    createStreamConfiguration(streams3_2, StreamConfigurationMode::NORMAL_MODE,
+                              &config3_2, &config3_4);
     if (session3_4 != nullptr) {
-        ret = session3_4->configureStreams_3_4(config,
-                [&] (Status s, device::V3_3::HalStreamConfiguration halConfig) {
+        RequestTemplate reqTemplate = RequestTemplate::PREVIEW;
+        ret = session3_4->constructDefaultRequestSettings(reqTemplate,
+                                                       [&config3_4](auto status, const auto& req) {
+                                                           ASSERT_EQ(Status::OK, status);
+                                                           config3_4.sessionParams = req;
+                                                       });
+        ASSERT_TRUE(ret.isOk());
+        ret = session3_4->configureStreams_3_4(config3_4,
+                [&] (Status s, device::V3_4::HalStreamConfiguration halConfig) {
                     ASSERT_EQ(Status::OK, s);
                     ASSERT_EQ(1u, halConfig.streams.size());
                     halStreamConfig->streams.resize(halConfig.streams.size());
                     for (size_t i = 0; i < halConfig.streams.size(); i++) {
-                        halStreamConfig->streams[i] = halConfig.streams[i].v3_2;
+                        halStreamConfig->streams[i] = halConfig.streams[i].v3_3.v3_2;
                     }
                 });
     } else if (session3_3 != nullptr) {
-        ret = session3_3->configureStreams_3_3(config.v3_2,
+        ret = session3_3->configureStreams_3_3(config3_2,
                 [&] (Status s, device::V3_3::HalStreamConfiguration halConfig) {
                     ASSERT_EQ(Status::OK, s);
                     ASSERT_EQ(1u, halConfig.streams.size());
@@ -3853,13 +3907,14 @@
                     }
                 });
     } else {
-        ret = (*session)->configureStreams(config.v3_2,
+        ret = (*session)->configureStreams(config3_2,
                 [&] (Status s, HalStreamConfiguration halConfig) {
                     ASSERT_EQ(Status::OK, s);
                     ASSERT_EQ(1u, halConfig.streams.size());
                     *halStreamConfig = halConfig;
                 });
     }
+    *previewStream = stream3_2;
     ASSERT_TRUE(ret.isOk());
 }
 
diff --git a/graphics/composer/2.1/default/Android.bp b/graphics/composer/2.1/default/Android.bp
index 140e50e..b46a1de 100644
--- a/graphics/composer/2.1/default/Android.bp
+++ b/graphics/composer/2.1/default/Android.bp
@@ -17,6 +17,9 @@
         "libsync",
         "libutils",
     ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
 }
 
 cc_library_shared {
@@ -41,6 +44,9 @@
         "libhwc2on1adapter",
         "libhwc2onfbadapter",
     ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
 }
 
 cc_binary {
@@ -65,10 +71,3 @@
         "libutils",
     ],
 }
-
-cc_library_static {
-    name: "libhwcomposer-command-buffer",
-    defaults: ["hidl_defaults"],
-    shared_libs: ["android.hardware.graphics.composer@2.1"],
-    export_include_dirs: ["."],
-}
diff --git a/graphics/composer/2.1/default/ComposerClient.cpp b/graphics/composer/2.1/default/ComposerClient.cpp
index 8aa9af0..0fcb9de 100644
--- a/graphics/composer/2.1/default/ComposerClient.cpp
+++ b/graphics/composer/2.1/default/ComposerClient.cpp
@@ -19,9 +19,8 @@
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <log/log.h>
 
-#include "ComposerClient.h"
 #include "ComposerBase.h"
-#include "IComposerCommandBuffer.h"
+#include "ComposerClient.h"
 
 namespace android {
 namespace hardware {
diff --git a/graphics/composer/2.1/default/ComposerClient.h b/graphics/composer/2.1/default/ComposerClient.h
index fc5c223..104ed5a 100644
--- a/graphics/composer/2.1/default/ComposerClient.h
+++ b/graphics/composer/2.1/default/ComposerClient.h
@@ -21,8 +21,8 @@
 #include <unordered_map>
 #include <vector>
 
+#include <composer-command-buffer/2.1/ComposerCommandBuffer.h>
 #include <hardware/hwcomposer2.h>
-#include "IComposerCommandBuffer.h"
 #include "ComposerBase.h"
 
 namespace android {
diff --git a/graphics/composer/2.1/default/OWNERS b/graphics/composer/2.1/default/OWNERS
index 3aa5fa1..4714be2 100644
--- a/graphics/composer/2.1/default/OWNERS
+++ b/graphics/composer/2.1/default/OWNERS
@@ -1,4 +1,5 @@
 # Graphics team
+courtneygo@google.com
 jessehall@google.com
 olv@google.com
 stoza@google.com
diff --git a/graphics/composer/2.1/utils/OWNERS b/graphics/composer/2.1/utils/OWNERS
new file mode 100644
index 0000000..d515a23
--- /dev/null
+++ b/graphics/composer/2.1/utils/OWNERS
@@ -0,0 +1,4 @@
+courtneygo@google.com
+jessehall@google.com
+olv@google.com
+stoza@google.com
diff --git a/graphics/composer/2.1/utils/command-buffer/Android.bp b/graphics/composer/2.1/utils/command-buffer/Android.bp
new file mode 100644
index 0000000..e8d41c2
--- /dev/null
+++ b/graphics/composer/2.1/utils/command-buffer/Android.bp
@@ -0,0 +1,7 @@
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.1-command-buffer",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: ["android.hardware.graphics.composer@2.1"],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.1/default/IComposerCommandBuffer.h b/graphics/composer/2.1/utils/command-buffer/include/composer-command-buffer/2.1/ComposerCommandBuffer.h
similarity index 69%
rename from graphics/composer/2.1/default/IComposerCommandBuffer.h
rename to graphics/composer/2.1/utils/command-buffer/include/composer-command-buffer/2.1/ComposerCommandBuffer.h
index c752f8a..df529ec 100644
--- a/graphics/composer/2.1/default/IComposerCommandBuffer.h
+++ b/graphics/composer/2.1/utils/command-buffer/include/composer-command-buffer/2.1/ComposerCommandBuffer.h
@@ -18,7 +18,7 @@
 #define ANDROID_HARDWARE_GRAPHICS_COMPOSER_COMMAND_BUFFER_H
 
 #ifndef LOG_TAG
-#warn "IComposerCommandBuffer.h included without LOG_TAG"
+#warn "ComposerCommandBuffer.h included without LOG_TAG"
 #endif
 
 #undef LOG_NDEBUG
@@ -33,9 +33,9 @@
 #include <string.h>
 
 #include <android/hardware/graphics/composer/2.1/IComposer.h>
+#include <fmq/MessageQueue.h>
 #include <log/log.h>
 #include <sync/sync.h>
-#include <fmq/MessageQueue.h>
 
 namespace android {
 namespace hardware {
@@ -53,21 +53,15 @@
 // This class helps build a command queue.  Note that all sizes/lengths are in
 // units of uint32_t's.
 class CommandWriterBase {
-public:
-    CommandWriterBase(uint32_t initialMaxSize)
-        : mDataMaxSize(initialMaxSize)
-    {
+   public:
+    CommandWriterBase(uint32_t initialMaxSize) : mDataMaxSize(initialMaxSize) {
         mData = std::make_unique<uint32_t[]>(mDataMaxSize);
         reset();
     }
 
-    virtual ~CommandWriterBase()
-    {
-        reset();
-    }
+    virtual ~CommandWriterBase() { reset(); }
 
-    void reset()
-    {
+    void reset() {
         mDataWritten = 0;
         mCommandEnd = 0;
 
@@ -82,16 +76,14 @@
         mTemporaryHandles.clear();
     }
 
-    IComposerClient::Command getCommand(uint32_t offset)
-    {
+    IComposerClient::Command getCommand(uint32_t offset) {
         uint32_t val = (offset < mDataWritten) ? mData[offset] : 0;
-        return static_cast<IComposerClient::Command>(val &
-                static_cast<uint32_t>(IComposerClient::Command::OPCODE_MASK));
+        return static_cast<IComposerClient::Command>(
+            val & static_cast<uint32_t>(IComposerClient::Command::OPCODE_MASK));
     }
 
     bool writeQueue(bool* outQueueChanged, uint32_t* outCommandLength,
-            hidl_vec<hidl_handle>* outCommandHandles)
-    {
+                    hidl_vec<hidl_handle>* outCommandHandles) {
         if (mDataWritten == 0) {
             *outQueueChanged = false;
             *outCommandLength = 0;
@@ -126,8 +118,7 @@
             *outQueueChanged = false;
         } else {
             auto newQueue = std::make_unique<CommandQueueType>(mDataMaxSize);
-            if (!newQueue->isValid() ||
-                    !newQueue->write(mData.get(), mDataWritten)) {
+            if (!newQueue->isValid() || !newQueue->write(mData.get(), mDataWritten)) {
                 ALOGE("failed to prepare a new message queue ");
                 return false;
             }
@@ -137,39 +128,32 @@
         }
 
         *outCommandLength = mDataWritten;
-        outCommandHandles->setToExternal(
-                const_cast<hidl_handle*>(mDataHandles.data()),
-                mDataHandles.size());
+        outCommandHandles->setToExternal(const_cast<hidl_handle*>(mDataHandles.data()),
+                                         mDataHandles.size());
 
         return true;
     }
 
-    const MQDescriptorSync<uint32_t>* getMQDescriptor() const
-    {
+    const MQDescriptorSync<uint32_t>* getMQDescriptor() const {
         return (mQueue) ? mQueue->getDesc() : nullptr;
     }
 
     static constexpr uint16_t kSelectDisplayLength = 2;
-    void selectDisplay(Display display)
-    {
-        beginCommand(IComposerClient::Command::SELECT_DISPLAY,
-                kSelectDisplayLength);
+    void selectDisplay(Display display) {
+        beginCommand(IComposerClient::Command::SELECT_DISPLAY, kSelectDisplayLength);
         write64(display);
         endCommand();
     }
 
     static constexpr uint16_t kSelectLayerLength = 2;
-    void selectLayer(Layer layer)
-    {
-        beginCommand(IComposerClient::Command::SELECT_LAYER,
-                kSelectLayerLength);
+    void selectLayer(Layer layer) {
+        beginCommand(IComposerClient::Command::SELECT_LAYER, kSelectLayerLength);
         write64(layer);
         endCommand();
     }
 
     static constexpr uint16_t kSetErrorLength = 2;
-    void setError(uint32_t location, Error error)
-    {
+    void setError(uint32_t location, Error error) {
         beginCommand(IComposerClient::Command::SET_ERROR, kSetErrorLength);
         write(location);
         writeSigned(static_cast<int32_t>(error));
@@ -177,25 +161,23 @@
     }
 
     static constexpr uint32_t kPresentOrValidateDisplayResultLength = 1;
-    void setPresentOrValidateResult(uint32_t  state) {
-       beginCommand(IComposerClient::Command::SET_PRESENT_OR_VALIDATE_DISPLAY_RESULT, kPresentOrValidateDisplayResultLength);
-       write(state);
-       endCommand();
+    void setPresentOrValidateResult(uint32_t state) {
+        beginCommand(IComposerClient::Command::SET_PRESENT_OR_VALIDATE_DISPLAY_RESULT,
+                     kPresentOrValidateDisplayResultLength);
+        write(state);
+        endCommand();
     }
 
     void setChangedCompositionTypes(const std::vector<Layer>& layers,
-            const std::vector<IComposerClient::Composition>& types)
-    {
+                                    const std::vector<IComposerClient::Composition>& types) {
         size_t totalLayers = std::min(layers.size(), types.size());
         size_t currentLayer = 0;
 
         while (currentLayer < totalLayers) {
-            size_t count = std::min(totalLayers - currentLayer,
-                    static_cast<size_t>(kMaxLength) / 3);
+            size_t count =
+                std::min(totalLayers - currentLayer, static_cast<size_t>(kMaxLength) / 3);
 
-            beginCommand(
-                    IComposerClient::Command::SET_CHANGED_COMPOSITION_TYPES,
-                    count * 3);
+            beginCommand(IComposerClient::Command::SET_CHANGED_COMPOSITION_TYPES, count * 3);
             for (size_t i = 0; i < count; i++) {
                 write64(layers[currentLayer + i]);
                 writeSigned(static_cast<int32_t>(types[currentLayer + i]));
@@ -206,20 +188,16 @@
         }
     }
 
-    void setDisplayRequests(uint32_t displayRequestMask,
-            const std::vector<Layer>& layers,
-            const std::vector<uint32_t>& layerRequestMasks)
-    {
-        size_t totalLayers = std::min(layers.size(),
-                layerRequestMasks.size());
+    void setDisplayRequests(uint32_t displayRequestMask, const std::vector<Layer>& layers,
+                            const std::vector<uint32_t>& layerRequestMasks) {
+        size_t totalLayers = std::min(layers.size(), layerRequestMasks.size());
         size_t currentLayer = 0;
 
         while (currentLayer < totalLayers) {
-            size_t count = std::min(totalLayers - currentLayer,
-                    static_cast<size_t>(kMaxLength - 1) / 3);
+            size_t count =
+                std::min(totalLayers - currentLayer, static_cast<size_t>(kMaxLength - 1) / 3);
 
-            beginCommand(IComposerClient::Command::SET_DISPLAY_REQUESTS,
-                    1 + count * 3);
+            beginCommand(IComposerClient::Command::SET_DISPLAY_REQUESTS, 1 + count * 3);
             write(displayRequestMask);
             for (size_t i = 0; i < count; i++) {
                 write64(layers[currentLayer + i]);
@@ -232,26 +210,21 @@
     }
 
     static constexpr uint16_t kSetPresentFenceLength = 1;
-    void setPresentFence(int presentFence)
-    {
-        beginCommand(IComposerClient::Command::SET_PRESENT_FENCE,
-                kSetPresentFenceLength);
+    void setPresentFence(int presentFence) {
+        beginCommand(IComposerClient::Command::SET_PRESENT_FENCE, kSetPresentFenceLength);
         writeFence(presentFence);
         endCommand();
     }
 
-    void setReleaseFences(const std::vector<Layer>& layers,
-            const std::vector<int>& releaseFences)
-    {
+    void setReleaseFences(const std::vector<Layer>& layers, const std::vector<int>& releaseFences) {
         size_t totalLayers = std::min(layers.size(), releaseFences.size());
         size_t currentLayer = 0;
 
         while (currentLayer < totalLayers) {
-            size_t count = std::min(totalLayers - currentLayer,
-                    static_cast<size_t>(kMaxLength) / 3);
+            size_t count =
+                std::min(totalLayers - currentLayer, static_cast<size_t>(kMaxLength) / 3);
 
-            beginCommand(IComposerClient::Command::SET_RELEASE_FENCES,
-                    count * 3);
+            beginCommand(IComposerClient::Command::SET_RELEASE_FENCES, count * 3);
             for (size_t i = 0; i < count; i++) {
                 write64(layers[currentLayer + i]);
                 writeFence(releaseFences[currentLayer + i]);
@@ -263,10 +236,8 @@
     }
 
     static constexpr uint16_t kSetColorTransformLength = 17;
-    void setColorTransform(const float* matrix, ColorTransform hint)
-    {
-        beginCommand(IComposerClient::Command::SET_COLOR_TRANSFORM,
-                kSetColorTransformLength);
+    void setColorTransform(const float* matrix, ColorTransform hint) {
+        beginCommand(IComposerClient::Command::SET_COLOR_TRANSFORM, kSetColorTransformLength);
         for (int i = 0; i < 16; i++) {
             writeFloat(matrix[i]);
         }
@@ -274,10 +245,8 @@
         endCommand();
     }
 
-    void setClientTarget(uint32_t slot, const native_handle_t* target,
-            int acquireFence, Dataspace dataspace,
-            const std::vector<IComposerClient::Rect>& damage)
-    {
+    void setClientTarget(uint32_t slot, const native_handle_t* target, int acquireFence,
+                         Dataspace dataspace, const std::vector<IComposerClient::Rect>& damage) {
         bool doWrite = (damage.size() <= (kMaxLength - 4) / 4);
         size_t length = 4 + ((doWrite) ? damage.size() * 4 : 0);
 
@@ -296,11 +265,8 @@
     }
 
     static constexpr uint16_t kSetOutputBufferLength = 3;
-    void setOutputBuffer(uint32_t slot, const native_handle_t* buffer,
-            int releaseFence)
-    {
-        beginCommand(IComposerClient::Command::SET_OUTPUT_BUFFER,
-                kSetOutputBufferLength);
+    void setOutputBuffer(uint32_t slot, const native_handle_t* buffer, int releaseFence) {
+        beginCommand(IComposerClient::Command::SET_OUTPUT_BUFFER, kSetOutputBufferLength);
         write(slot);
         writeHandle(buffer, true);
         writeFence(releaseFence);
@@ -308,67 +274,53 @@
     }
 
     static constexpr uint16_t kValidateDisplayLength = 0;
-    void validateDisplay()
-    {
-        beginCommand(IComposerClient::Command::VALIDATE_DISPLAY,
-                kValidateDisplayLength);
+    void validateDisplay() {
+        beginCommand(IComposerClient::Command::VALIDATE_DISPLAY, kValidateDisplayLength);
         endCommand();
     }
 
     static constexpr uint16_t kPresentOrValidateDisplayLength = 0;
-    void presentOrvalidateDisplay()
-    {
+    void presentOrvalidateDisplay() {
         beginCommand(IComposerClient::Command::PRESENT_OR_VALIDATE_DISPLAY,
                      kPresentOrValidateDisplayLength);
         endCommand();
     }
 
     static constexpr uint16_t kAcceptDisplayChangesLength = 0;
-    void acceptDisplayChanges()
-    {
-        beginCommand(IComposerClient::Command::ACCEPT_DISPLAY_CHANGES,
-                kAcceptDisplayChangesLength);
+    void acceptDisplayChanges() {
+        beginCommand(IComposerClient::Command::ACCEPT_DISPLAY_CHANGES, kAcceptDisplayChangesLength);
         endCommand();
     }
 
     static constexpr uint16_t kPresentDisplayLength = 0;
-    void presentDisplay()
-    {
-        beginCommand(IComposerClient::Command::PRESENT_DISPLAY,
-                kPresentDisplayLength);
+    void presentDisplay() {
+        beginCommand(IComposerClient::Command::PRESENT_DISPLAY, kPresentDisplayLength);
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerCursorPositionLength = 2;
-    void setLayerCursorPosition(int32_t x, int32_t y)
-    {
+    void setLayerCursorPosition(int32_t x, int32_t y) {
         beginCommand(IComposerClient::Command::SET_LAYER_CURSOR_POSITION,
-                kSetLayerCursorPositionLength);
+                     kSetLayerCursorPositionLength);
         writeSigned(x);
         writeSigned(y);
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerBufferLength = 3;
-    void setLayerBuffer(uint32_t slot, const native_handle_t* buffer,
-            int acquireFence)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_BUFFER,
-                kSetLayerBufferLength);
+    void setLayerBuffer(uint32_t slot, const native_handle_t* buffer, int acquireFence) {
+        beginCommand(IComposerClient::Command::SET_LAYER_BUFFER, kSetLayerBufferLength);
         write(slot);
         writeHandle(buffer, true);
         writeFence(acquireFence);
         endCommand();
     }
 
-    void setLayerSurfaceDamage(
-            const std::vector<IComposerClient::Rect>& damage)
-    {
+    void setLayerSurfaceDamage(const std::vector<IComposerClient::Rect>& damage) {
         bool doWrite = (damage.size() <= kMaxLength / 4);
         size_t length = (doWrite) ? damage.size() * 4 : 0;
 
-        beginCommand(IComposerClient::Command::SET_LAYER_SURFACE_DAMAGE,
-                length);
+        beginCommand(IComposerClient::Command::SET_LAYER_SURFACE_DAMAGE, length);
         // When there are too many rectangles in the damage region and doWrite
         // is false, we write no rectangle at all which means the entire
         // layer is damaged.
@@ -379,94 +331,76 @@
     }
 
     static constexpr uint16_t kSetLayerBlendModeLength = 1;
-    void setLayerBlendMode(IComposerClient::BlendMode mode)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_BLEND_MODE,
-                kSetLayerBlendModeLength);
+    void setLayerBlendMode(IComposerClient::BlendMode mode) {
+        beginCommand(IComposerClient::Command::SET_LAYER_BLEND_MODE, kSetLayerBlendModeLength);
         writeSigned(static_cast<int32_t>(mode));
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerColorLength = 1;
-    void setLayerColor(IComposerClient::Color color)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_COLOR,
-                kSetLayerColorLength);
+    void setLayerColor(IComposerClient::Color color) {
+        beginCommand(IComposerClient::Command::SET_LAYER_COLOR, kSetLayerColorLength);
         writeColor(color);
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerCompositionTypeLength = 1;
-    void setLayerCompositionType(IComposerClient::Composition type)
-    {
+    void setLayerCompositionType(IComposerClient::Composition type) {
         beginCommand(IComposerClient::Command::SET_LAYER_COMPOSITION_TYPE,
-                kSetLayerCompositionTypeLength);
+                     kSetLayerCompositionTypeLength);
         writeSigned(static_cast<int32_t>(type));
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerDataspaceLength = 1;
-    void setLayerDataspace(Dataspace dataspace)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_DATASPACE,
-                kSetLayerDataspaceLength);
+    void setLayerDataspace(Dataspace dataspace) {
+        beginCommand(IComposerClient::Command::SET_LAYER_DATASPACE, kSetLayerDataspaceLength);
         writeSigned(static_cast<int32_t>(dataspace));
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerDisplayFrameLength = 4;
-    void setLayerDisplayFrame(const IComposerClient::Rect& frame)
-    {
+    void setLayerDisplayFrame(const IComposerClient::Rect& frame) {
         beginCommand(IComposerClient::Command::SET_LAYER_DISPLAY_FRAME,
-                kSetLayerDisplayFrameLength);
+                     kSetLayerDisplayFrameLength);
         writeRect(frame);
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerPlaneAlphaLength = 1;
-    void setLayerPlaneAlpha(float alpha)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_PLANE_ALPHA,
-                kSetLayerPlaneAlphaLength);
+    void setLayerPlaneAlpha(float alpha) {
+        beginCommand(IComposerClient::Command::SET_LAYER_PLANE_ALPHA, kSetLayerPlaneAlphaLength);
         writeFloat(alpha);
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerSidebandStreamLength = 1;
-    void setLayerSidebandStream(const native_handle_t* stream)
-    {
+    void setLayerSidebandStream(const native_handle_t* stream) {
         beginCommand(IComposerClient::Command::SET_LAYER_SIDEBAND_STREAM,
-                kSetLayerSidebandStreamLength);
+                     kSetLayerSidebandStreamLength);
         writeHandle(stream);
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerSourceCropLength = 4;
-    void setLayerSourceCrop(const IComposerClient::FRect& crop)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_SOURCE_CROP,
-                kSetLayerSourceCropLength);
+    void setLayerSourceCrop(const IComposerClient::FRect& crop) {
+        beginCommand(IComposerClient::Command::SET_LAYER_SOURCE_CROP, kSetLayerSourceCropLength);
         writeFRect(crop);
         endCommand();
     }
 
     static constexpr uint16_t kSetLayerTransformLength = 1;
-    void setLayerTransform(Transform transform)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_TRANSFORM,
-                kSetLayerTransformLength);
+    void setLayerTransform(Transform transform) {
+        beginCommand(IComposerClient::Command::SET_LAYER_TRANSFORM, kSetLayerTransformLength);
         writeSigned(static_cast<int32_t>(transform));
         endCommand();
     }
 
-    void setLayerVisibleRegion(
-            const std::vector<IComposerClient::Rect>& visible)
-    {
+    void setLayerVisibleRegion(const std::vector<IComposerClient::Rect>& visible) {
         bool doWrite = (visible.size() <= kMaxLength / 4);
         size_t length = (doWrite) ? visible.size() * 4 : 0;
 
-        beginCommand(IComposerClient::Command::SET_LAYER_VISIBLE_REGION,
-                length);
+        beginCommand(IComposerClient::Command::SET_LAYER_VISIBLE_REGION, length);
         // When there are too many rectangles in the visible region and
         // doWrite is false, we write no rectangle at all which means the
         // entire layer is visible.
@@ -477,20 +411,16 @@
     }
 
     static constexpr uint16_t kSetLayerZOrderLength = 1;
-    void setLayerZOrder(uint32_t z)
-    {
-        beginCommand(IComposerClient::Command::SET_LAYER_Z_ORDER,
-                kSetLayerZOrderLength);
+    void setLayerZOrder(uint32_t z) {
+        beginCommand(IComposerClient::Command::SET_LAYER_Z_ORDER, kSetLayerZOrderLength);
         write(z);
         endCommand();
     }
 
-protected:
-    void beginCommand(IComposerClient::Command command, uint16_t length)
-    {
+   protected:
+    void beginCommand(IComposerClient::Command command, uint16_t length) {
         if (mCommandEnd) {
-            LOG_FATAL("endCommand was not called before command 0x%x",
-                    command);
+            LOG_FATAL("endCommand was not called before command 0x%x", command);
         }
 
         growData(1 + length);
@@ -499,8 +429,7 @@
         mCommandEnd = mDataWritten + length;
     }
 
-    void endCommand()
-    {
+    void endCommand() {
         if (!mCommandEnd) {
             LOG_FATAL("beginCommand was not called");
         } else if (mDataWritten > mCommandEnd) {
@@ -516,67 +445,48 @@
         mCommandEnd = 0;
     }
 
-    void write(uint32_t val)
-    {
-        mData[mDataWritten++] = val;
-    }
+    void write(uint32_t val) { mData[mDataWritten++] = val; }
 
-    void writeSigned(int32_t val)
-    {
-        memcpy(&mData[mDataWritten++], &val, sizeof(val));
-    }
+    void writeSigned(int32_t val) { memcpy(&mData[mDataWritten++], &val, sizeof(val)); }
 
-    void writeFloat(float val)
-    {
-        memcpy(&mData[mDataWritten++], &val, sizeof(val));
-    }
+    void writeFloat(float val) { memcpy(&mData[mDataWritten++], &val, sizeof(val)); }
 
-    void write64(uint64_t val)
-    {
+    void write64(uint64_t val) {
         uint32_t lo = static_cast<uint32_t>(val & 0xffffffff);
         uint32_t hi = static_cast<uint32_t>(val >> 32);
         write(lo);
         write(hi);
     }
 
-    void writeRect(const IComposerClient::Rect& rect)
-    {
+    void writeRect(const IComposerClient::Rect& rect) {
         writeSigned(rect.left);
         writeSigned(rect.top);
         writeSigned(rect.right);
         writeSigned(rect.bottom);
     }
 
-    void writeRegion(const std::vector<IComposerClient::Rect>& region)
-    {
+    void writeRegion(const std::vector<IComposerClient::Rect>& region) {
         for (const auto& rect : region) {
             writeRect(rect);
         }
     }
 
-    void writeFRect(const IComposerClient::FRect& rect)
-    {
+    void writeFRect(const IComposerClient::FRect& rect) {
         writeFloat(rect.left);
         writeFloat(rect.top);
         writeFloat(rect.right);
         writeFloat(rect.bottom);
     }
 
-    void writeColor(const IComposerClient::Color& color)
-    {
-        write((color.r <<  0) |
-              (color.g <<  8) |
-              (color.b << 16) |
-              (color.a << 24));
+    void writeColor(const IComposerClient::Color& color) {
+        write((color.r << 0) | (color.g << 8) | (color.b << 16) | (color.a << 24));
     }
 
     // ownership of handle is not transferred
-    void writeHandle(const native_handle_t* handle, bool useCache)
-    {
+    void writeHandle(const native_handle_t* handle, bool useCache) {
         if (!handle) {
-            writeSigned(static_cast<int32_t>((useCache) ?
-                        IComposerClient::HandleIndex::CACHED :
-                        IComposerClient::HandleIndex::EMPTY));
+            writeSigned(static_cast<int32_t>((useCache) ? IComposerClient::HandleIndex::CACHED
+                                                        : IComposerClient::HandleIndex::EMPTY));
             return;
         }
 
@@ -584,14 +494,10 @@
         writeSigned(mDataHandles.size() - 1);
     }
 
-    void writeHandle(const native_handle_t* handle)
-    {
-        writeHandle(handle, false);
-    }
+    void writeHandle(const native_handle_t* handle) { writeHandle(handle, false); }
 
     // ownership of fence is transferred
-    void writeFence(int fence)
-    {
+    void writeFence(int fence) {
         native_handle_t* handle = nullptr;
         if (fence >= 0) {
             handle = getTemporaryHandle(1, 0);
@@ -607,8 +513,7 @@
         writeHandle(handle);
     }
 
-    native_handle_t* getTemporaryHandle(int numFds, int numInts)
-    {
+    native_handle_t* getTemporaryHandle(int numFds, int numInts) {
         native_handle_t* handle = native_handle_create(numFds, numInts);
         if (handle) {
             mTemporaryHandles.push_back(handle);
@@ -616,16 +521,14 @@
         return handle;
     }
 
-    static constexpr uint16_t kMaxLength =
-        std::numeric_limits<uint16_t>::max();
+    static constexpr uint16_t kMaxLength = std::numeric_limits<uint16_t>::max();
 
-private:
-    void growData(uint32_t grow)
-    {
+   private:
+    void growData(uint32_t grow) {
         uint32_t newWritten = mDataWritten + grow;
         if (newWritten < mDataWritten) {
-            LOG_ALWAYS_FATAL("buffer overflowed; data written %" PRIu32
-                    ", growing by %" PRIu32, mDataWritten, grow);
+            LOG_ALWAYS_FATAL("buffer overflowed; data written %" PRIu32 ", growing by %" PRIu32,
+                             mDataWritten, grow);
         }
 
         if (newWritten <= mDataMaxSize) {
@@ -651,7 +554,7 @@
     uint32_t mCommandEnd;
 
     std::vector<hidl_handle> mDataHandles;
-    std::vector<native_handle_t *> mTemporaryHandles;
+    std::vector<native_handle_t*> mTemporaryHandles;
 
     std::unique_ptr<CommandQueueType> mQueue;
 };
@@ -659,14 +562,10 @@
 // This class helps parse a command queue.  Note that all sizes/lengths are in
 // units of uint32_t's.
 class CommandReaderBase {
-public:
-    CommandReaderBase() : mDataMaxSize(0)
-    {
-        reset();
-    }
+   public:
+    CommandReaderBase() : mDataMaxSize(0) { reset(); }
 
-    bool setMQDescriptor(const MQDescriptorSync<uint32_t>& descriptor)
-    {
+    bool setMQDescriptor(const MQDescriptorSync<uint32_t>& descriptor) {
         mQueue = std::make_unique<CommandQueueType>(descriptor, false);
         if (mQueue->isValid()) {
             return true;
@@ -676,9 +575,7 @@
         }
     }
 
-    bool readQueue(uint32_t commandLength,
-            const hidl_vec<hidl_handle>& commandHandles)
-    {
+    bool readQueue(uint32_t commandLength, const hidl_vec<hidl_handle>& commandHandles) {
         if (!mQueue) {
             return false;
         }
@@ -689,8 +586,7 @@
             mData = std::make_unique<uint32_t[]>(mDataMaxSize);
         }
 
-        if (commandLength > mDataMaxSize ||
-                !mQueue->read(mData.get(), commandLength)) {
+        if (commandLength > mDataMaxSize || !mQueue->read(mData.get(), commandLength)) {
             ALOGE("failed to read commands from message queue");
             return false;
         }
@@ -699,15 +595,13 @@
         mDataRead = 0;
         mCommandBegin = 0;
         mCommandEnd = 0;
-        mDataHandles.setToExternal(
-                const_cast<hidl_handle*>(commandHandles.data()),
-                commandHandles.size());
+        mDataHandles.setToExternal(const_cast<hidl_handle*>(commandHandles.data()),
+                                   commandHandles.size());
 
         return true;
     }
 
-    void reset()
-    {
+    void reset() {
         mDataSize = 0;
         mDataRead = 0;
         mCommandBegin = 0;
@@ -715,15 +609,10 @@
         mDataHandles.setToExternal(nullptr, 0);
     }
 
-protected:
-    bool isEmpty() const
-    {
-        return (mDataRead >= mDataSize);
-    }
+   protected:
+    bool isEmpty() const { return (mDataRead >= mDataSize); }
 
-    bool beginCommand(IComposerClient::Command* outCommand,
-            uint16_t* outLength)
-    {
+    bool beginCommand(IComposerClient::Command* outCommand, uint16_t* outLength) {
         if (mCommandEnd) {
             LOG_FATAL("endCommand was not called for last command");
         }
@@ -734,13 +623,11 @@
             static_cast<uint32_t>(IComposerClient::Command::LENGTH_MASK);
 
         uint32_t val = read();
-        *outCommand = static_cast<IComposerClient::Command>(
-                val & opcode_mask);
+        *outCommand = static_cast<IComposerClient::Command>(val & opcode_mask);
         *outLength = static_cast<uint16_t>(val & length_mask);
 
         if (mDataRead + *outLength > mDataSize) {
-            ALOGE("command 0x%x has invalid command length %" PRIu16,
-                    *outCommand, *outLength);
+            ALOGE("command 0x%x has invalid command length %" PRIu16, *outCommand, *outLength);
             // undo the read() above
             mDataRead--;
             return false;
@@ -751,8 +638,7 @@
         return true;
     }
 
-    void endCommand()
-    {
+    void endCommand() {
         if (!mCommandEnd) {
             LOG_FATAL("beginCommand was not called");
         } else if (mDataRead > mCommandEnd) {
@@ -767,83 +653,68 @@
         mCommandEnd = 0;
     }
 
-    uint32_t getCommandLoc() const
-    {
-        return mCommandBegin;
-    }
+    uint32_t getCommandLoc() const { return mCommandBegin; }
 
-    uint32_t read()
-    {
-        return mData[mDataRead++];
-    }
+    uint32_t read() { return mData[mDataRead++]; }
 
-    int32_t readSigned()
-    {
+    int32_t readSigned() {
         int32_t val;
         memcpy(&val, &mData[mDataRead++], sizeof(val));
         return val;
     }
 
-    float readFloat()
-    {
+    float readFloat() {
         float val;
         memcpy(&val, &mData[mDataRead++], sizeof(val));
         return val;
     }
 
-    uint64_t read64()
-    {
+    uint64_t read64() {
         uint32_t lo = read();
         uint32_t hi = read();
         return (static_cast<uint64_t>(hi) << 32) | lo;
     }
 
-    IComposerClient::Color readColor()
-    {
+    IComposerClient::Color readColor() {
         uint32_t val = read();
         return IComposerClient::Color{
-            static_cast<uint8_t>((val >>  0) & 0xff),
-            static_cast<uint8_t>((val >>  8) & 0xff),
-            static_cast<uint8_t>((val >> 16) & 0xff),
-            static_cast<uint8_t>((val >> 24) & 0xff),
+            static_cast<uint8_t>((val >> 0) & 0xff), static_cast<uint8_t>((val >> 8) & 0xff),
+            static_cast<uint8_t>((val >> 16) & 0xff), static_cast<uint8_t>((val >> 24) & 0xff),
         };
     }
 
     // ownership of handle is not transferred
-    const native_handle_t* readHandle(bool* outUseCache)
-    {
+    const native_handle_t* readHandle(bool* outUseCache) {
         const native_handle_t* handle = nullptr;
 
         int32_t index = readSigned();
         switch (index) {
-        case static_cast<int32_t>(IComposerClient::HandleIndex::EMPTY):
-            *outUseCache = false;
-            break;
-        case static_cast<int32_t>(IComposerClient::HandleIndex::CACHED):
-            *outUseCache = true;
-            break;
-        default:
-            if (static_cast<size_t>(index) < mDataHandles.size()) {
-                handle = mDataHandles[index].getNativeHandle();
-            } else {
-                ALOGE("invalid handle index %zu", static_cast<size_t>(index));
-            }
-            *outUseCache = false;
-            break;
+            case static_cast<int32_t>(IComposerClient::HandleIndex::EMPTY):
+                *outUseCache = false;
+                break;
+            case static_cast<int32_t>(IComposerClient::HandleIndex::CACHED):
+                *outUseCache = true;
+                break;
+            default:
+                if (static_cast<size_t>(index) < mDataHandles.size()) {
+                    handle = mDataHandles[index].getNativeHandle();
+                } else {
+                    ALOGE("invalid handle index %zu", static_cast<size_t>(index));
+                }
+                *outUseCache = false;
+                break;
         }
 
         return handle;
     }
 
-    const native_handle_t* readHandle()
-    {
+    const native_handle_t* readHandle() {
         bool useCache;
         return readHandle(&useCache);
     }
 
     // ownership of fence is transferred
-    int readFence()
-    {
+    int readFence() {
         auto handle = readHandle();
         if (!handle || handle->numFds == 0) {
             return -1;
@@ -864,7 +735,7 @@
         return fd;
     }
 
-private:
+   private:
     std::unique_ptr<CommandQueueType> mQueue;
     uint32_t mDataMaxSize;
     std::unique_ptr<uint32_t[]> mData;
@@ -879,10 +750,10 @@
     hidl_vec<hidl_handle> mDataHandles;
 };
 
-} // namespace V2_1
-} // namespace composer
-} // namespace graphics
-} // namespace hardware
-} // namespace android
+}  // namespace V2_1
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
 
-#endif // ANDROID_HARDWARE_GRAPHICS_COMPOSER_COMMAND_BUFFER_H
+#endif  // ANDROID_HARDWARE_GRAPHICS_COMPOSER_COMMAND_BUFFER_H
diff --git a/graphics/composer/2.1/vts/functional/Android.bp b/graphics/composer/2.1/vts/functional/Android.bp
index 1ba7c9a..40f18c0 100644
--- a/graphics/composer/2.1/vts/functional/Android.bp
+++ b/graphics/composer/2.1/vts/functional/Android.bp
@@ -28,9 +28,11 @@
         "libsync",
     ],
     static_libs: [
-        "libhwcomposer-command-buffer",
         "VtsHalHidlTargetTestBase",
     ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
     cflags: [
         "-Wall",
         "-Wextra",
@@ -58,7 +60,9 @@
         "android.hardware.graphics.mapper@2.0",
         "libVtsHalGraphicsComposerTestUtils",
         "libVtsHalGraphicsMapperTestUtils",
-        "libhwcomposer-command-buffer",
         "libnativehelper",
     ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
 }
diff --git a/graphics/composer/2.1/vts/functional/TestCommandReader.h b/graphics/composer/2.1/vts/functional/TestCommandReader.h
index 657a463..ae25d2d 100644
--- a/graphics/composer/2.1/vts/functional/TestCommandReader.h
+++ b/graphics/composer/2.1/vts/functional/TestCommandReader.h
@@ -17,7 +17,7 @@
 #ifndef TEST_COMMAND_READER_H
 #define TEST_COMMAND_READER_H
 
-#include <IComposerCommandBuffer.h>
+#include <composer-command-buffer/2.1/ComposerCommandBuffer.h>
 
 namespace android {
 namespace hardware {
diff --git a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerTestUtils.h b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerTestUtils.h
index 4e69f61..29b9de3 100644
--- a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerTestUtils.h
+++ b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerTestUtils.h
@@ -23,8 +23,8 @@
 #include <unordered_set>
 #include <vector>
 
-#include <IComposerCommandBuffer.h>
 #include <android/hardware/graphics/composer/2.1/IComposer.h>
+#include <composer-command-buffer/2.1/ComposerCommandBuffer.h>
 #include <utils/StrongPointer.h>
 
 #include "TestCommandReader.h"
diff --git a/keymaster/4.0/IKeymasterDevice.hal b/keymaster/4.0/IKeymasterDevice.hal
index 14c9c35..5dac929 100644
--- a/keymaster/4.0/IKeymasterDevice.hal
+++ b/keymaster/4.0/IKeymasterDevice.hal
@@ -274,6 +274,23 @@
      * @param maskingKey The 32-byte value XOR'd with the transport key in the SecureWrappedKey
      *        structure.
      *
+     * @param unwrappingParams must contain any parameters needed to perform the unwrapping
+     *        operation.  For example, if the wrapping key is an AES key the block and padding modes
+     *        must be specified in this argument.
+     *
+     * @param passwordSid specifies the password secure ID (SID) of the user that owns the key being
+     *        installed.  If the authorization list in wrappedKeyData contains a Tag::USER_SECURE_ID
+     *        with a value that has the HardwareAuthenticatorType::PASSWORD bit set, the constructed
+     *        key must be bound to the SID value provided by this argument.  If the wrappedKeyData
+     *        does not contain such a tag and value, this argument must be ignored.
+     *
+     * @param biometricSid specifies the biometric secure ID (SID) of the user that owns the key
+     *        being installed.  If the authorization list in wrappedKeyData contains a
+     *        Tag::USER_SECURE_ID with a value that has the HardwareAuthenticatorType::FINGERPRINT
+     *        bit set, the constructed key must be bound to the SID value provided by this argument.
+     *        If the wrappedKeyData does not contain such a tag and value, this argument must be
+     *        ignored.
+     *
      * @return error See the ErrorCode enum.
      *
      * @return keyBlob Opaque descriptor of the imported key.  It is recommended that the keyBlob
@@ -281,8 +298,9 @@
      *         hardware.
      */
     importWrappedKey(vec<uint8_t> wrappedKeyData, vec<uint8_t> wrappingKeyBlob,
-                     vec<uint8_t> maskingKey)
-        generates (ErrorCode error, vec<uint8_t> keyBlob, KeyCharacteristics keyCharacteristics);
+                     vec<uint8_t> maskingKey, vec<KeyParameter> unwrappingParams,
+                     uint64_t passwordSid, uint64_t biometricSid)
+        generates(ErrorCode error, vec<uint8_t> keyBlob, KeyCharacteristics keyCharacteristics);
 
     /**
      * Returns the characteristics of the specified key, if the keyBlob is valid (implementations
diff --git a/keymaster/4.0/support/include/keymasterV4_0/Keymaster3.h b/keymaster/4.0/support/include/keymasterV4_0/Keymaster3.h
index 051e570..4054620 100644
--- a/keymaster/4.0/support/include/keymasterV4_0/Keymaster3.h
+++ b/keymaster/4.0/support/include/keymasterV4_0/Keymaster3.h
@@ -74,8 +74,12 @@
     Return<void> importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
                            const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) override;
 
-    Return<void> importWrappedKey(const hidl_vec<uint8_t>&, const hidl_vec<uint8_t>&,
-                                  const hidl_vec<uint8_t>&, importWrappedKey_cb _hidl_cb) {
+    Return<void> importWrappedKey(const hidl_vec<uint8_t>& /* wrappedKeyData */,
+                                  const hidl_vec<uint8_t>& /* wrappingKeyBlob */,
+                                  const hidl_vec<uint8_t>& /* maskingKey */,
+                                  const hidl_vec<KeyParameter>& /* unwrappingParams */,
+                                  uint64_t /* passwordSid */, uint64_t /* biometricSid */,
+                                  importWrappedKey_cb _hidl_cb) {
         _hidl_cb(ErrorCode::UNIMPLEMENTED, {}, {});
         return Void();
     }
diff --git a/keymaster/4.0/support/include/keymasterV4_0/Keymaster4.h b/keymaster/4.0/support/include/keymasterV4_0/Keymaster4.h
index ffddcac..86ef4f8 100644
--- a/keymaster/4.0/support/include/keymasterV4_0/Keymaster4.h
+++ b/keymaster/4.0/support/include/keymasterV4_0/Keymaster4.h
@@ -81,8 +81,11 @@
     Return<void> importWrappedKey(const hidl_vec<uint8_t>& wrappedKeyData,
                                   const hidl_vec<uint8_t>& wrappingKeyBlob,
                                   const hidl_vec<uint8_t>& maskingKey,
+                                  const hidl_vec<KeyParameter>& unwrappingParams,
+                                  uint64_t passwordSid, uint64_t biometricSid,
                                   importWrappedKey_cb _hidl_cb) {
-        return dev_->importWrappedKey(wrappedKeyData, wrappingKeyBlob, maskingKey, _hidl_cb);
+        return dev_->importWrappedKey(wrappedKeyData, wrappingKeyBlob, maskingKey, unwrappingParams,
+                                      passwordSid, biometricSid, _hidl_cb);
     }
 
     Return<void> exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
diff --git a/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp b/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp
index 13b6b2f..37d8c42 100644
--- a/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp
+++ b/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp
@@ -137,11 +137,14 @@
 
 ErrorCode KeymasterHidlTest::ImportWrappedKey(string wrapped_key, string wrapping_key,
                                               const AuthorizationSet& wrapping_key_desc,
-                                              string masking_key) {
+                                              string masking_key,
+                                              const AuthorizationSet& unwrapping_params) {
     ErrorCode error;
     ImportKey(wrapping_key_desc, KeyFormat::PKCS8, wrapping_key);
     EXPECT_TRUE(keymaster_
                     ->importWrappedKey(HidlBuf(wrapped_key), key_blob_, HidlBuf(masking_key),
+                                       unwrapping_params.hidl_data(), 0 /* passwordSid */,
+                                       0 /* biometricSid */,
                                        [&](ErrorCode hidl_error, const HidlBuf& hidl_key_blob,
                                            const KeyCharacteristics& hidl_key_characteristics) {
                                            error = hidl_error;
diff --git a/keymaster/4.0/vts/functional/KeymasterHidlTest.h b/keymaster/4.0/vts/functional/KeymasterHidlTest.h
index 6d28f17..36d3fc2 100644
--- a/keymaster/4.0/vts/functional/KeymasterHidlTest.h
+++ b/keymaster/4.0/vts/functional/KeymasterHidlTest.h
@@ -116,7 +116,8 @@
                         const string& key_material);
 
     ErrorCode ImportWrappedKey(string wrapped_key, string wrapping_key,
-                               const AuthorizationSet& wrapping_key_desc, string masking_key);
+                               const AuthorizationSet& wrapping_key_desc, string masking_key,
+                               const AuthorizationSet& unwrapping_params);
 
     ErrorCode ExportKey(KeyFormat format, const HidlBuf& key_blob, const HidlBuf& client_id,
                         const HidlBuf& app_data, HidlBuf* key_material);
diff --git a/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp b/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
index 31d6ad1..1d8dfdf 100644
--- a/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
+++ b/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
@@ -1857,7 +1857,9 @@
                                  .Authorization(TAG_PURPOSE, KeyPurpose::WRAP_KEY);
 
     ASSERT_EQ(ErrorCode::OK,
-              ImportWrappedKey(wrapped_key, wrapping_key, wrapping_key_desc, zero_masking_key));
+              ImportWrappedKey(
+                  wrapped_key, wrapping_key, wrapping_key_desc, zero_masking_key,
+                  AuthorizationSetBuilder().Digest(Digest::SHA1).Padding(PaddingMode::RSA_OAEP)));
 
     string message = "Hello World!";
     auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
@@ -1874,7 +1876,9 @@
                                  .Authorization(TAG_PURPOSE, KeyPurpose::WRAP_KEY);
 
     ASSERT_EQ(ErrorCode::OK,
-              ImportWrappedKey(wrapped_key_masked, wrapping_key, wrapping_key_desc, masking_key));
+              ImportWrappedKey(
+                  wrapped_key_masked, wrapping_key, wrapping_key_desc, masking_key,
+                  AuthorizationSetBuilder().Digest(Digest::SHA1).Padding(PaddingMode::RSA_OAEP)));
 }
 
 TEST_F(ImportWrappedKeyTest, WrongMask) {
@@ -1884,9 +1888,10 @@
                                  .Padding(PaddingMode::RSA_OAEP)
                                  .Authorization(TAG_PURPOSE, KeyPurpose::WRAP_KEY);
 
-    ASSERT_EQ(
-        ErrorCode::VERIFICATION_FAILED,
-        ImportWrappedKey(wrapped_key_masked, wrapping_key, wrapping_key_desc, zero_masking_key));
+    ASSERT_EQ(ErrorCode::VERIFICATION_FAILED,
+              ImportWrappedKey(
+                  wrapped_key_masked, wrapping_key, wrapping_key_desc, zero_masking_key,
+                  AuthorizationSetBuilder().Digest(Digest::SHA1).Padding(PaddingMode::RSA_OAEP)));
 }
 
 TEST_F(ImportWrappedKeyTest, WrongPurpose) {
@@ -1895,9 +1900,10 @@
                                  .Digest(Digest::SHA1)
                                  .Padding(PaddingMode::RSA_OAEP);
 
-    ASSERT_EQ(
-        ErrorCode::INCOMPATIBLE_PURPOSE,
-        ImportWrappedKey(wrapped_key_masked, wrapping_key, wrapping_key_desc, zero_masking_key));
+    ASSERT_EQ(ErrorCode::INCOMPATIBLE_PURPOSE,
+              ImportWrappedKey(
+                  wrapped_key_masked, wrapping_key, wrapping_key_desc, zero_masking_key,
+                  AuthorizationSetBuilder().Digest(Digest::SHA1).Padding(PaddingMode::RSA_OAEP)));
 }
 
 typedef KeymasterHidlTest EncryptionOperationsTest;
diff --git a/light/utils/Android.bp b/light/utils/Android.bp
new file mode 100644
index 0000000..ebcbfa2
--- /dev/null
+++ b/light/utils/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright (C) 2017 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.
+//
+
+// Turns off the screen.
+// Canonical usage is for init (which can't talk to hals directly).
+cc_binary {
+    name: "blank_screen",
+    init_rc: ["blank_screen.rc"],
+    srcs: ["main.cpp"],
+    shared_libs: [
+        "android.hardware.light@2.0",
+        "libbase",
+        "libhidlbase",
+        "libhidltransport",
+        "libutils",
+    ],
+}
diff --git a/light/utils/blank_screen.rc b/light/utils/blank_screen.rc
new file mode 100644
index 0000000..735551c
--- /dev/null
+++ b/light/utils/blank_screen.rc
@@ -0,0 +1,5 @@
+service blank_screen /system/bin/blank_screen
+    user system
+    oneshot
+    group system readproc
+    shutdown critical
diff --git a/light/utils/main.cpp b/light/utils/main.cpp
new file mode 100644
index 0000000..1f9cb9c
--- /dev/null
+++ b/light/utils/main.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2017 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 <iostream>
+#include <string>
+
+#include <android-base/logging.h>
+#include <android/hardware/light/2.0/ILight.h>
+
+void error(const std::string& msg) {
+    LOG(ERROR) << msg;
+    std::cerr << msg << std::endl;
+}
+
+int main() {
+    using ::android::hardware::light::V2_0::Brightness;
+    using ::android::hardware::light::V2_0::Flash;
+    using ::android::hardware::light::V2_0::ILight;
+    using ::android::hardware::light::V2_0::LightState;
+    using ::android::hardware::light::V2_0::Status;
+    using ::android::hardware::light::V2_0::Type;
+    using ::android::sp;
+
+    sp<ILight> service = ILight::getService();
+    if (service == nullptr) {
+        error("Could not retrieve light service.");
+        return -1;
+    }
+
+    const static LightState off = {
+        .color = 0u, .flashMode = Flash::NONE, .brightnessMode = Brightness::USER,
+    };
+
+    Status ret = service->setLight(Type::BACKLIGHT, off).withDefault(Status::UNKNOWN);
+    if (ret != Status::SUCCESS) {
+        error("Failed to shut off screen");
+    }
+    return 0;
+}