diff --git a/audio/effect/2.0/default/AcousticEchoCancelerEffect.cpp b/audio/effect/2.0/default/AcousticEchoCancelerEffect.cpp
new file mode 100644
index 0000000..c2f50f9
--- /dev/null
+++ b/audio/effect/2.0/default/AcousticEchoCancelerEffect.cpp
@@ -0,0 +1,184 @@
+/*
+ * 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 "AEC_Effect_HAL"
+#include <system/audio_effects/effect_aec.h>
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> AcousticEchoCancelerEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+// 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
diff --git a/audio/effect/2.0/default/AcousticEchoCancelerEffect.h b/audio/effect/2.0/default/AcousticEchoCancelerEffect.h
new file mode 100644
index 0000000..cebc2d4
--- /dev/null
+++ b/audio/effect/2.0/default/AcousticEchoCancelerEffect.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.
+ */
+
+#ifndef HIDL_GENERATED_android_hardware_audio_effect_V2_0_AcousticEchoCancelerEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_android_hardware_audio_effect_V2_0_AcousticEchoCancelerEffect_H_
diff --git a/audio/effect/2.0/default/Android.mk b/audio/effect/2.0/default/Android.mk
new file mode 100644
index 0000000..13106f3
--- /dev/null
+++ b/audio/effect/2.0/default/Android.mk
@@ -0,0 +1,31 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.audio.effect@2.0-impl
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := \
+    AcousticEchoCancelerEffect.cpp \
+    AutomaticGainControlEffect.cpp \
+    BassBoostEffect.cpp \
+    Conversions.cpp \
+    DownmixEffect.cpp \
+    Effect.cpp \
+    EffectsFactory.cpp \
+    EnvironmentalReverbEffect.cpp \
+    EqualizerEffect.cpp \
+    LoudnessEnhancerEffect.cpp \
+    NoiseSuppressionEffect.cpp \
+    PresetReverbEffect.cpp \
+    VirtualizerEffect.cpp \
+    VisualizerEffect.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+    libhidl \
+    libhwbinder \
+    libutils \
+    libeffects \
+    liblog \
+    android.hardware.audio.common@2.0 \
+    android.hardware.audio.effect@2.0 \
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/audio/effect/2.0/default/AutomaticGainControlEffect.cpp b/audio/effect/2.0/default/AutomaticGainControlEffect.cpp
new file mode 100644
index 0000000..34cbe97
--- /dev/null
+++ b/audio/effect/2.0/default/AutomaticGainControlEffect.cpp
@@ -0,0 +1,230 @@
+/*
+ * 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 "AGC_Effect_HAL"
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> AutomaticGainControlEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+// 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
diff --git a/audio/effect/2.0/default/AutomaticGainControlEffect.h b/audio/effect/2.0/default/AutomaticGainControlEffect.h
new file mode 100644
index 0000000..f4b228c
--- /dev/null
+++ b/audio/effect/2.0/default/AutomaticGainControlEffect.h
@@ -0,0 +1,134 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_AutomaticGainControlEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..1b12f76
--- /dev/null
+++ b/audio/effect/2.0/default/BassBoostEffect.cpp
@@ -0,0 +1,188 @@
+/*
+ * 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 "BassBoost_HAL"
+#include <system/audio_effects/effect_bassboost.h>
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> BassBoostEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+// 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
diff --git a/audio/effect/2.0/default/BassBoostEffect.h b/audio/effect/2.0/default/BassBoostEffect.h
new file mode 100644
index 0000000..23377e1
--- /dev/null
+++ b/audio/effect/2.0/default/BassBoostEffect.h
@@ -0,0 +1,119 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_BassBoostEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..ef2374c
--- /dev/null
+++ b/audio/effect/2.0/default/Conversions.cpp
@@ -0,0 +1,78 @@
+/*
+ * 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 <memory.h>
+#include <stdio.h>
+
+#include "Conversions.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace V2_0 {
+namespace implementation {
+
+void effectDescriptorFromHal(
+        const effect_descriptor_t& halDescriptor, EffectDescriptor* descriptor) {
+    uuidFromHal(halDescriptor.type, &descriptor->type);
+    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());
+}
+
+void uuidFromHal(const effect_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 uuidToHal(const Uuid& uuid, effect_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());
+}
+
+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
diff --git a/audio/effect/2.0/default/Conversions.h b/audio/effect/2.0/default/Conversions.h
new file mode 100644
index 0000000..5348ae6
--- /dev/null
+++ b/audio/effect/2.0/default/Conversions.h
@@ -0,0 +1,48 @@
+/*
+ * 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_effect_V2_0_Conversions_H_
+#define android_hardware_audio_effect_V2_0_Conversions_H_
+
+#include <string>
+
+#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 {
+
+using ::android::hardware::audio::common::V2_0::Uuid;
+using ::android::hardware::audio::effect::V2_0::EffectDescriptor;
+
+void effectDescriptorFromHal(
+        const effect_descriptor_t& halDescriptor, EffectDescriptor* descriptor);
+void uuidFromHal(const effect_uuid_t& halUuid, Uuid* uuid);
+void uuidToHal(const Uuid& uuid, effect_uuid_t* halUuid);
+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_
diff --git a/audio/effect/2.0/default/DownmixEffect.cpp b/audio/effect/2.0/default/DownmixEffect.cpp
new file mode 100644
index 0000000..4c0a0bf
--- /dev/null
+++ b/audio/effect/2.0/default/DownmixEffect.cpp
@@ -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.
+ */
+
+#define LOG_TAG "Downmix_HAL"
+#include <system/audio_effects/effect_downmix.h>
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> DownmixEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+// 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
diff --git a/audio/effect/2.0/default/DownmixEffect.h b/audio/effect/2.0/default/DownmixEffect.h
new file mode 100644
index 0000000..5ed4ffd
--- /dev/null
+++ b/audio/effect/2.0/default/DownmixEffect.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.
+ */
+
+#ifndef HIDL_GENERATED_android_hardware_audio_effect_V2_0_DownmixEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..8ab0749
--- /dev/null
+++ b/audio/effect/2.0/default/Effect.cpp
@@ -0,0 +1,613 @@
+/*
+ * 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 <memory>
+#include <memory.h>
+
+#define LOG_TAG "EffectHAL"
+#include <media/EffectsFactoryApi.h>
+#include <utils/Log.h>
+
+#include "Conversions.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::AudioFormat;
+
+// static
+const char *Effect::sContextResultOfCommand = "returned status";
+const char *Effect::sContextCallToCommand = "error";
+const char *Effect::sContextCallFunction = sContextCallToCommand;
+
+Effect::Effect(effect_handle_t handle) : mHandle(handle) {
+}
+
+Effect::~Effect() {
+    int status = EffectRelease(mHandle);
+    ALOGW_IF(status, "Error releasing effect %p: %s", mHandle, strerror(-status));
+    mHandle = 0;
+}
+
+// static
+template<typename T> size_t Effect::alignedSizeIn(size_t s) {
+    return (s + sizeof(T) - 1) / sizeof(T);
+}
+
+// static
+template<typename T> void Effect::hidlVecToHal(
+        const hidl_vec<T>& vec, uint32_t* halDataSize, void** halData) {
+    *halDataSize = static_cast<T>(vec.size() * sizeof(T));
+    *halData = static_cast<void*>(const_cast<T*>(&vec[0]));
+}
+
+// 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) {
+    // TODO(mnaganov): Use FMQ instead of AudioBuffer.
+    (void)halConfig.buffer.frameCount;
+    (void)halConfig.buffer.raw;
+    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) {
+    // TODO(mnaganov): Use FMQ instead of AudioBuffer.
+    halConfig->buffer.frameCount = 0;
+    halConfig->buffer.raw = NULL;
+    halConfig->samplingRate = config.samplingRateHz;
+    halConfig->channels = static_cast<uint32_t>(config.channels);
+    // TODO(mnaganov): As the calling code does not use BP for now, implement later.
+    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 valueSize,
+        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, valueSize, nullptr);
+    const void *valueData = nullptr;
+    std::vector<uint8_t> halParamBuffer =
+            parameterToHal(paramSize, paramData, valueSize, &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);
+            });
+}
+
+void Effect::processImpl(
+        ProcessFunction process,
+        const char* funcName,
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        ProcessCallback cb) {
+    audio_buffer_t halInBuffer;
+    halInBuffer.frameCount = inBuffer.frameCount;
+    halInBuffer.u8 = const_cast<uint8_t*>(&inBuffer.data[0]);
+    audio_buffer_t halOutBuffer;
+    halOutBuffer.frameCount = halInBuffer.frameCount;
+    // TODO(mnaganov): Consider stashing the buffer to avoid reallocating it every time.
+    std::unique_ptr<uint8_t[]> halOutBufferData(
+            new uint8_t[halOutBuffer.frameCount * outFrameSize]);
+    halOutBuffer.u8 = &halOutBufferData[0];
+    status_t status = process(mHandle, &halInBuffer, &halOutBuffer);
+    Result retval = analyzeStatus(funcName, "", sContextCallFunction, status);
+    AudioBuffer outBuffer;
+    if (status == OK) {
+        outBuffer.frameCount = halOutBuffer.frameCount;
+        outBuffer.data.setToExternal(halOutBuffer.u8, halOutBuffer.frameCount * outFrameSize);
+    } else {
+        outBuffer.frameCount = 0;
+    }
+    cb(retval, outBuffer);
+}
+
+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;
+    void *halData;
+    hidlVecToHal(volumes, &halDataSize, &halData);
+    uint32_t halResultSize = halDataSize;
+    uint32_t halResult[volumes.size()];
+    Result retval = sendCommandReturningData(
+            EFFECT_CMD_SET_VOLUME, "SET_VOLUME", halDataSize, halData, &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::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 halCmd = EFFECT_FEATURE_AUX_CHANNELS;
+    uint32_t halResult[alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t))];
+    memset(halResult, 0, sizeof(halResult));
+    uint32_t halResultSize = 0;
+    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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  {
+    processImpl((*mHandle)->process, "process", inBuffer, outFrameSize, _hidl_cb);
+    return Void();
+}
+
+Return<void> Effect::processReverse(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, processReverse_cb _hidl_cb)  {
+    if ((*mHandle)->process_reverse != NULL) {
+        processImpl(
+                (*mHandle)->process_reverse, "process_reverse", inBuffer, outFrameSize, _hidl_cb);
+    } else {
+        _hidl_cb(Result::NOT_SUPPORTED, AudioBuffer());
+    }
+    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;
+    void *halData;
+    hidlVecToHal(data, &halDataSize, &halData);
+    uint32_t halResultSize = resultMaxSize;
+    std::unique_ptr<uint8_t[]> halResult(new uint8_t[halResultSize]);
+    memset(&halResult[0], 0, halResultSize);
+    status_t status = (*mHandle)->command(
+            mHandle, commandId, halDataSize, halData, &halResultSize, &halResult[0]);
+    hidl_vec<uint8_t> result;
+    if (status == OK) {
+        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);
+}
+
+} // namespace implementation
+}  // namespace V2_0
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/2.0/default/Effect.h b/audio/effect/2.0/default/Effect.h
new file mode 100644
index 0000000..e27a7e4
--- /dev/null
+++ b/audio/effect/2.0/default/Effect.h
@@ -0,0 +1,259 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_Effect_H_
+#define HIDL_GENERATED_android_hardware_audio_effect_V2_0_Effect_H_
+
+#include <vector>
+
+#include <android/hardware/audio/effect/2.0/IEffect.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include <hardware/audio_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::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 {
+    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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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);
+    }
+
+  private:
+    friend struct VirtualizerEffect;  // for getParameterImpl
+    friend struct VisualizerEffect;   // to allow executing commands
+
+    typedef int32_t (*ProcessFunction)(
+            effect_handle_t self, audio_buffer_t* inBuffer, audio_buffer_t* outBuffer);
+    using CommandSuccessCallback = std::function<void()>;
+    using GetConfigCallback = std::function<void(Result retval, const EffectConfig& config)>;
+    using GetCurrentConfigSuccessCallback = std::function<void(void* configData)>;
+    using GetParameterSuccessCallback =
+            std::function<void(uint32_t valueSize, const void* valueData)>;
+    using GetSupportedConfigsSuccessCallback =
+            std::function<void(uint32_t supportedConfigs, void* configsData)>;
+    using ProcessCallback = std::function<void(Result retval, const AudioBuffer& outBuffer)>;
+
+    static const char *sContextResultOfCommand;
+    static const char *sContextCallToCommand;
+    static const char *sContextCallFunction;
+
+    effect_handle_t mHandle;
+
+    virtual ~Effect();
+
+    template<typename T> static size_t alignedSizeIn(size_t s);
+    template<typename T> static void hidlVecToHal(
+            const hidl_vec<T>& vec, uint32_t* halDataSize, void** halData);
+    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 getParameterImpl(
+            uint32_t paramSize,
+            const void* paramData,
+            uint32_t valueSize,
+            GetParameterSuccessCallback onSuccess);
+    Result getSupportedConfigsImpl(
+            uint32_t featureId,
+            uint32_t maxConfigs,
+            uint32_t configSize,
+            GetSupportedConfigsSuccessCallback onSuccess);
+    void processImpl(
+            ProcessFunction process,
+            const char* funcName,
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            ProcessCallback cb);
+    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);
+    Result setParameterImpl(
+            uint32_t paramSize, const void* paramData, uint32_t valueSize, const void* valueData);
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..f7c5d62
--- /dev/null
+++ b/audio/effect/2.0/default/EffectsFactory.cpp
@@ -0,0 +1,197 @@
+/*
+ * 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 "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 <utils/Log.h>
+
+#include "AcousticEchoCancelerEffect.h"
+#include "AutomaticGainControlEffect.h"
+#include "BassBoostEffect.h"
+#include "Conversions.h"
+#include "EffectsFactory.h"
+#include "DownmixEffect.h"
+#include "Effect.h"
+#include "EnvironmentalReverbEffect.h"
+#include "EqualizerEffect.h"
+#include "LoudnessEnhancerEffect.h"
+#include "NoiseSuppressionEffect.h"
+#include "PresetReverbEffect.h"
+#include "VirtualizerEffect.h"
+#include "VisualizerEffect.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace effect {
+namespace V2_0 {
+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::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;
+        ALOGW("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 {
+            ALOGW("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;
+    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) {
+        ALOGW("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;
+    uuidToHal(uid, &halUuid);
+    effect_handle_t handle;
+    Result retval(Result::OK);
+    status_t status = EffectCreate(&halUuid, session, ioHandle, &handle);
+    sp<IEffect> effect;
+    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);
+        }
+    }
+    if (status != OK) {
+        ALOGW("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);
+    return Void();
+}
+
+Return<void> EffectsFactory::debugDump(const native_handle_t* fd)  {
+    if (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
diff --git a/audio/effect/2.0/default/EffectsFactory.h b/audio/effect/2.0/default/EffectsFactory.h
new file mode 100644
index 0000000..229356f
--- /dev/null
+++ b/audio/effect/2.0/default/EffectsFactory.h
@@ -0,0 +1,66 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_EffectsFactory_H_
+#define HIDL_GENERATED_android_hardware_audio_effect_V2_0_EffectsFactory_H_
+
+#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 native_handle_t* 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..4485be4
--- /dev/null
+++ b/audio/effect/2.0/default/EnvironmentalReverbEffect.cpp
@@ -0,0 +1,310 @@
+/*
+ * 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 "EnvReverb_HAL"
+#include <utils/Log.h>
+
+#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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> EnvironmentalReverbEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+
+// 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
diff --git a/audio/effect/2.0/default/EnvironmentalReverbEffect.h b/audio/effect/2.0/default/EnvironmentalReverbEffect.h
new file mode 100644
index 0000000..c97c51c
--- /dev/null
+++ b/audio/effect/2.0/default/EnvironmentalReverbEffect.h
@@ -0,0 +1,160 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_EnvironmentalReverbEffect_H_
+#define HIDL_GENERATED_android_hardware_audio_effect_V2_0_EnvironmentalReverbEffect_H_
+
+#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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..9e20b8a
--- /dev/null
+++ b/audio/effect/2.0/default/EqualizerEffect.cpp
@@ -0,0 +1,286 @@
+/*
+ * 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 <memory.h>
+
+#define LOG_TAG "Equalizer_HAL"
+#include <utils/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(
+        t_equalizer_settings& halProperties,
+        IEqualizerEffect::AllProperties* properties) {
+    properties->curPreset = halProperties.curPreset;
+    properties->bandLevels.setToExternal(&halProperties.bandLevels[0], 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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> EqualizerEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+
+// 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)  {
+    uint16_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, uint16_t level)  {
+    return mEffect->setParam(EQ_PARAM_BAND_LEVEL, band, level);
+}
+
+Return<void> EqualizerEffect::getBandLevel(uint16_t band, getBandLevel_cb _hidl_cb)  {
+    uint16_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);
+    return mEffect->setParam(EQ_PARAM_PROPERTIES, *halPropertiesPtr);
+}
+
+Return<void> EqualizerEffect::getAllProperties(getAllProperties_cb _hidl_cb)  {
+    t_equalizer_settings halProperties;
+    Result retval = mEffect->getParam(EQ_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
diff --git a/audio/effect/2.0/default/EqualizerEffect.h b/audio/effect/2.0/default/EqualizerEffect.h
new file mode 100644
index 0000000..5665e9c
--- /dev/null
+++ b/audio/effect/2.0/default/EqualizerEffect.h
@@ -0,0 +1,150 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_EqualizerEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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, uint16_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(
+            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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..1e724e0
--- /dev/null
+++ b/audio/effect/2.0/default/LoudnessEnhancerEffect.cpp
@@ -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 <system/audio_effects/effect_loudnessenhancer.h>
+
+#define LOG_TAG "LoudnessEnhancer_HAL"
+#include <system/audio_effects/effect_aec.h>
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> LoudnessEnhancerEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+
+// 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)  {
+    return mEffect->getIntegerParam(LOUDNESS_ENHANCER_DEFAULT_TARGET_GAIN_MB, _hidl_cb);
+}
+
+} // namespace implementation
+}  // namespace V2_0
+}  // namespace effect
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/effect/2.0/default/LoudnessEnhancerEffect.h b/audio/effect/2.0/default/LoudnessEnhancerEffect.h
new file mode 100644
index 0000000..e68b038
--- /dev/null
+++ b/audio/effect/2.0/default/LoudnessEnhancerEffect.h
@@ -0,0 +1,128 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_LoudnessEnhancerEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..5c392df
--- /dev/null
+++ b/audio/effect/2.0/default/NoiseSuppressionEffect.cpp
@@ -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.
+ */
+
+#define LOG_TAG "NS_Effect_HAL"
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> NoiseSuppressionEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+
+// 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
diff --git a/audio/effect/2.0/default/NoiseSuppressionEffect.h b/audio/effect/2.0/default/NoiseSuppressionEffect.h
new file mode 100644
index 0000000..83e513e
--- /dev/null
+++ b/audio/effect/2.0/default/NoiseSuppressionEffect.h
@@ -0,0 +1,142 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_NoiseSuppressionEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..988bc51
--- /dev/null
+++ b/audio/effect/2.0/default/PresetReverbEffect.cpp
@@ -0,0 +1,188 @@
+/*
+ * 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 "PresetReverb_HAL"
+#include <system/audio_effects/effect_presetreverb.h>
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> PresetReverbEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+
+// 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
diff --git a/audio/effect/2.0/default/PresetReverbEffect.h b/audio/effect/2.0/default/PresetReverbEffect.h
new file mode 100644
index 0000000..3d98102
--- /dev/null
+++ b/audio/effect/2.0/default/PresetReverbEffect.h
@@ -0,0 +1,128 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_PresetReverbEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..af5252b
--- /dev/null
+++ b/audio/effect/2.0/default/VirtualizerEffect.cpp
@@ -0,0 +1,242 @@
+/*
+ * 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 <memory.h>
+
+#define LOG_TAG "Virtualizer_HAL"
+#include <system/audio_effects/effect_virtualizer.h>
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> VirtualizerEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+
+// 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
diff --git a/audio/effect/2.0/default/VirtualizerEffect.h b/audio/effect/2.0/default/VirtualizerEffect.h
new file mode 100644
index 0000000..2731c4e
--- /dev/null
+++ b/audio/effect/2.0/default/VirtualizerEffect.h
@@ -0,0 +1,139 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_VirtualizerEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_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
new file mode 100644
index 0000000..a1f92a6
--- /dev/null
+++ b/audio/effect/2.0/default/VisualizerEffect.cpp
@@ -0,0 +1,262 @@
+/*
+ * 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 "Visualizer_HAL"
+#include <system/audio_effects/effect_visualizer.h>
+#include <utils/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::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::process(
+        const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb) {
+    return mEffect->process(inBuffer, outFrameSize, _hidl_cb);
+}
+
+Return<void> VisualizerEffect::processReverse(
+        const AudioBuffer& inBuffer,
+        uint32_t outFrameSize,
+        processReverse_cb _hidl_cb) {
+    return mEffect->processReverse(inBuffer, outFrameSize, _hidl_cb);
+}
+
+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);
+}
+
+
+// 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
diff --git a/audio/effect/2.0/default/VisualizerEffect.h b/audio/effect/2.0/default/VisualizerEffect.h
new file mode 100644
index 0000000..505b16f
--- /dev/null
+++ b/audio/effect/2.0/default/VisualizerEffect.h
@@ -0,0 +1,138 @@
+/*
+ * 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 HIDL_GENERATED_android_hardware_audio_effect_V2_0_VisualizerEffect_H_
+#define HIDL_GENERATED_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> 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> process(
+            const AudioBuffer& inBuffer, uint32_t outFrameSize, process_cb _hidl_cb)  override;
+    Return<void> processReverse(
+            const AudioBuffer& inBuffer,
+            uint32_t outFrameSize,
+            processReverse_cb _hidl_cb)  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;
+
+    // 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
+
+#endif  // HIDL_GENERATED_android_hardware_audio_effect_V2_0_VisualizerEffect_H_