diff --git a/audio/2.0/default/Android.mk b/audio/2.0/default/Android.mk
index a987b41..a5c0383 100644
--- a/audio/2.0/default/Android.mk
+++ b/audio/2.0/default/Android.mk
@@ -17,20 +17,53 @@
 LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.audio@2.0-impl
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := \
+    Conversions.cpp \
+    Device.cpp \
+    DevicesFactory.cpp \
+    ParametersUtil.cpp \
+    PrimaryDevice.cpp \
+    Stream.cpp \
+    StreamIn.cpp \
+    StreamOut.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+    libhidl \
+    libhwbinder \
+    libutils \
+    libhardware \
+    liblog \
+    android.hardware.audio@2.0 \
+    android.hardware.audio.common@2.0 \
+    android.hardware.audio.common@2.0-util \
+
+LOCAL_WHOLE_STATIC_LIBRARIES := libmedia_helper
+
+include $(BUILD_SHARED_LIBRARY)
+
+#
+# Service
+#
+
+include $(CLEAR_VARS)
 LOCAL_MODULE := android.hardware.audio@2.0-service
 LOCAL_INIT_RC := android.hardware.audio@2.0-service.rc
 LOCAL_MODULE_RELATIVE_PATH := hw
 LOCAL_SRC_FILES := \
-  service.cpp
+    service.cpp
 
 LOCAL_SHARED_LIBRARIES := \
-  libhidl \
-  liblog \
-  libhwbinder \
-  libutils \
-  libhardware \
-  android.hardware.soundtrigger@2.0 \
-  android.hardware.audio.common@2.0
+    libhidl \
+    liblog \
+    libhwbinder \
+    libutils \
+    libhardware \
+    android.hardware.audio@2.0 \
+    android.hardware.audio.common@2.0 \
+    android.hardware.audio.effect@2.0 \
+    android.hardware.soundtrigger@2.0 \
 
 ifeq ($(strip $(AUDIOSERVER_MULTILIB)),)
 LOCAL_MULTILIB := 32
diff --git a/audio/2.0/default/Conversions.cpp b/audio/2.0/default/Conversions.cpp
new file mode 100644
index 0000000..1ba16e1
--- /dev/null
+++ b/audio/2.0/default/Conversions.cpp
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+
+#include "Conversions.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+std::string deviceAddressToHal(const DeviceAddress& address) {
+    // HAL assumes that the address is NUL-terminated.
+    char halAddress[AUDIO_DEVICE_MAX_ADDRESS_LEN];
+    memset(halAddress, 0, sizeof(halAddress));
+    uint32_t halDevice = static_cast<uint32_t>(address.device);
+    if ((halDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != 0
+            || (halDevice & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%02X:%02X:%02X:%02X:%02X:%02X",
+                address.address.mac[0], address.address.mac[1], address.address.mac[2],
+                address.address.mac[3], address.address.mac[4], address.address.mac[5]);
+    } else if ((halDevice & AUDIO_DEVICE_OUT_IP) != 0 || (halDevice & AUDIO_DEVICE_IN_IP) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%d.%d.%d.%d",
+                address.address.ipv4[0], address.address.ipv4[1],
+                address.address.ipv4[2], address.address.ipv4[3]);
+    } else if ((halDevice & AUDIO_DEVICE_OUT_ALL_USB) != 0
+            || (halDevice & AUDIO_DEVICE_IN_ALL_USB) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "card=%d;device=%d",
+                address.address.alsa.card, address.address.alsa.device);
+    } else if ((halDevice & AUDIO_DEVICE_OUT_BUS) != 0 || (halDevice & AUDIO_DEVICE_IN_BUS) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%s", address.busAddress.c_str());
+    } else if ((halDevice & AUDIO_DEVICE_OUT_REMOTE_SUBMIX) != 0
+            || (halDevice & AUDIO_DEVICE_IN_REMOTE_SUBMIX) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%s", address.rSubmixAddress.c_str());
+    }
+    return halAddress;
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/Conversions.h b/audio/2.0/default/Conversions.h
new file mode 100644
index 0000000..ebda5c5
--- /dev/null
+++ b/audio/2.0/default/Conversions.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_audio_V2_0_Conversions_H_
+#define android_hardware_audio_V2_0_Conversions_H_
+
+#include <string>
+
+#include <android/hardware/audio/2.0/types.h>
+#include <system/audio.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::V2_0::DeviceAddress;
+
+std::string deviceAddressToHal(const DeviceAddress& address);
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_audio_V2_0_Conversions_H_
diff --git a/audio/2.0/default/Device.cpp b/audio/2.0/default/Device.cpp
new file mode 100644
index 0000000..05824c7
--- /dev/null
+++ b/audio/2.0/default/Device.cpp
@@ -0,0 +1,534 @@
+ /*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "DeviceHAL"
+
+#include <algorithm>
+#include <memory.h>
+#include <string.h>
+
+#include <utils/Log.h>
+
+#include "Conversions.h"
+#include "Device.h"
+#include "StreamIn.h"
+#include "StreamOut.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+Device::Device(audio_hw_device_t* device)
+        : mDevice(device) {
+}
+
+Device::~Device() {
+    int status = audio_hw_device_close(mDevice);
+    ALOGW_IF(status, "Error closing audio hw device %p: %s", mDevice, strerror(-status));
+    mDevice = nullptr;
+}
+
+// static
+void Device::audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig) {
+    memset(halConfig, 0, sizeof(audio_config_t));
+    halConfig->sample_rate = config.sampleRateHz;
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    halConfig->format = static_cast<audio_format_t>(config.format);
+    audioOffloadInfoToHal(config.offloadInfo, &halConfig->offload_info);
+    halConfig->frame_count = config.frameCount;
+}
+
+// static
+void Device::audioGainConfigFromHal(
+        const struct audio_gain_config& halConfig, AudioGainConfig* config) {
+    config->index = halConfig.index;
+    config->mode = AudioGainMode(halConfig.mode);
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
+        config->values[i] = halConfig.values[i];
+    }
+    config->rampDurationMs = halConfig.ramp_duration_ms;
+}
+
+// static
+void Device::audioGainConfigToHal(
+        const AudioGainConfig& config, struct audio_gain_config* halConfig) {
+    halConfig->index = config.index;
+    halConfig->mode = static_cast<audio_gain_mode_t>(config.mode);
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    memset(halConfig->values, 0, sizeof(halConfig->values));
+    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
+        halConfig->values[i] = config.values[i];
+    }
+    halConfig->ramp_duration_ms = config.rampDurationMs;
+}
+
+// static
+void Device::audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain) {
+    gain->mode = AudioGainMode(halGain.mode);
+    gain->channelMask = AudioChannelMask(halGain.channel_mask);
+    gain->minValue = halGain.min_value;
+    gain->maxValue = halGain.max_value;
+    gain->defaultValue = halGain.default_value;
+    gain->stepValue = halGain.step_value;
+    gain->minRampMs = halGain.min_ramp_ms;
+    gain->maxRampMs = halGain.max_ramp_ms;
+}
+
+// static
+void Device::audioGainToHal(const AudioGain& gain, struct audio_gain* halGain) {
+    halGain->mode = static_cast<audio_gain_mode_t>(gain.mode);
+    halGain->channel_mask = static_cast<audio_channel_mask_t>(gain.channelMask);
+    halGain->min_value = gain.minValue;
+    halGain->max_value = gain.maxValue;
+    halGain->default_value = gain.defaultValue;
+    halGain->step_value = gain.stepValue;
+    halGain->min_ramp_ms = gain.minRampMs;
+    halGain->max_ramp_ms = gain.maxRampMs;
+}
+
+// static
+void Device::audioOffloadInfoToHal(
+        const AudioOffloadInfo& offload, audio_offload_info_t* halOffload) {
+    *halOffload = AUDIO_INFO_INITIALIZER;
+    halOffload->sample_rate = offload.sampleRateHz;
+    halOffload->channel_mask = static_cast<audio_channel_mask_t>(offload.channelMask);
+    halOffload->stream_type = static_cast<audio_stream_type_t>(offload.streamType);
+    halOffload->bit_rate = offload.bitRatePerSecond;
+    halOffload->duration_us = offload.durationMicroseconds;
+    halOffload->has_video = offload.hasVideo;
+    halOffload->is_streaming = offload.isStreaming;
+}
+
+// static
+void Device::audioPortConfigFromHal(
+        const struct audio_port_config& halConfig, AudioPortConfig* config) {
+    config->id = halConfig.id;
+    config->role = AudioPortRole(halConfig.role);
+    config->type = AudioPortType(halConfig.type);
+    config->configMask = AudioPortConfigMask(halConfig.config_mask);
+    config->sampleRateHz = halConfig.sample_rate;
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    config->format = AudioFormat(halConfig.format);
+    audioGainConfigFromHal(halConfig.gain, &config->gain);
+    switch (halConfig.type) {
+        case AUDIO_PORT_TYPE_NONE: break;
+        case AUDIO_PORT_TYPE_DEVICE: {
+            config->ext.device.hwModule = halConfig.ext.device.hw_module;
+            config->ext.device.type = AudioDevice(halConfig.ext.device.type);
+            memcpy(config->ext.device.address.data(),
+                    halConfig.ext.device.address,
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AUDIO_PORT_TYPE_MIX: {
+            config->ext.mix.hwModule = halConfig.ext.mix.hw_module;
+            config->ext.mix.ioHandle = halConfig.ext.mix.handle;
+            if (halConfig.role == AUDIO_PORT_ROLE_SOURCE) {
+                config->ext.mix.useCase.source = AudioSource(halConfig.ext.mix.usecase.source);
+            } else if (halConfig.role == AUDIO_PORT_ROLE_SINK) {
+                config->ext.mix.useCase.stream = AudioStreamType(halConfig.ext.mix.usecase.stream);
+            }
+            break;
+        }
+        case AUDIO_PORT_TYPE_SESSION: {
+            config->ext.session.session = halConfig.ext.session.session;
+            break;
+        }
+    }
+}
+
+// static
+void Device::audioPortConfigToHal(
+        const AudioPortConfig& config, struct audio_port_config* halConfig) {
+    memset(halConfig, 0, sizeof(audio_port_config));
+    halConfig->id = config.id;
+    halConfig->role = static_cast<audio_port_role_t>(config.role);
+    halConfig->type = static_cast<audio_port_type_t>(config.type);
+    halConfig->config_mask = static_cast<unsigned int>(config.configMask);
+    halConfig->sample_rate = config.sampleRateHz;
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    halConfig->format = static_cast<audio_format_t>(config.format);
+    audioGainConfigToHal(config.gain, &halConfig->gain);
+    switch (config.type) {
+        case AudioPortType::NONE: break;
+        case AudioPortType::DEVICE: {
+            halConfig->ext.device.hw_module = config.ext.device.hwModule;
+            halConfig->ext.device.type = static_cast<audio_devices_t>(config.ext.device.type);
+            memcpy(halConfig->ext.device.address,
+                    config.ext.device.address.data(),
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AudioPortType::MIX: {
+            halConfig->ext.mix.hw_module = config.ext.mix.hwModule;
+            halConfig->ext.mix.handle = config.ext.mix.ioHandle;
+            if (config.role == AudioPortRole::SOURCE) {
+                halConfig->ext.mix.usecase.source =
+                        static_cast<audio_source_t>(config.ext.mix.useCase.source);
+            } else if (config.role == AudioPortRole::SINK) {
+                halConfig->ext.mix.usecase.stream =
+                        static_cast<audio_stream_type_t>(config.ext.mix.useCase.stream);
+            }
+            break;
+        }
+        case AudioPortType::SESSION: {
+            halConfig->ext.session.session =
+                    static_cast<audio_session_t>(config.ext.session.session);
+            break;
+        }
+    }
+}
+
+// static
+std::unique_ptr<audio_port_config[]> Device::audioPortConfigsToHal(
+        const hidl_vec<AudioPortConfig>& configs) {
+    std::unique_ptr<audio_port_config[]> halConfigs(new audio_port_config[configs.size()]);
+    for (size_t i = 0; i < configs.size(); ++i) {
+        audioPortConfigToHal(configs[i], &halConfigs[i]);
+    }
+    return halConfigs;
+}
+
+// static
+void Device::audioPortFromHal(const struct audio_port& halPort, AudioPort* port) {
+    port->id = halPort.id;
+    port->role = AudioPortRole(halPort.role);
+    port->type = AudioPortType(halPort.type);
+    port->name.setToExternal(halPort.name, strlen(halPort.name));
+    port->sampleRates.resize(halPort.num_sample_rates);
+    for (size_t i = 0; i < halPort.num_sample_rates; ++i) {
+        port->sampleRates[i] = halPort.sample_rates[i];
+    }
+    port->channelMasks.resize(halPort.num_channel_masks);
+    for (size_t i = 0; i < halPort.num_channel_masks; ++i) {
+        port->channelMasks[i] = AudioChannelMask(halPort.channel_masks[i]);
+    }
+    port->formats.resize(halPort.num_formats);
+    for (size_t i = 0; i < halPort.num_formats; ++i) {
+        port->formats[i] = AudioFormat(halPort.formats[i]);
+    }
+    port->gains.resize(halPort.num_gains);
+    for (size_t i = 0; i < halPort.num_gains; ++i) {
+        audioGainFromHal(halPort.gains[i], &port->gains[i]);
+    }
+    audioPortConfigFromHal(halPort.active_config, &port->activeConfig);
+    switch (halPort.type) {
+        case AUDIO_PORT_TYPE_NONE: break;
+        case AUDIO_PORT_TYPE_DEVICE: {
+            port->ext.device.hwModule = halPort.ext.device.hw_module;
+            port->ext.device.type = AudioDevice(halPort.ext.device.type);
+            memcpy(port->ext.device.address.data(),
+                    halPort.ext.device.address,
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AUDIO_PORT_TYPE_MIX: {
+            port->ext.mix.hwModule = halPort.ext.mix.hw_module;
+            port->ext.mix.ioHandle = halPort.ext.mix.handle;
+            port->ext.mix.latencyClass = AudioMixLatencyClass(halPort.ext.mix.latency_class);
+            break;
+        }
+        case AUDIO_PORT_TYPE_SESSION: {
+            port->ext.session.session = halPort.ext.session.session;
+            break;
+        }
+    }
+}
+
+// static
+void Device::audioPortToHal(const AudioPort& port, struct audio_port* halPort) {
+    memset(halPort, 0, sizeof(audio_port));
+    halPort->id = port.id;
+    halPort->role = static_cast<audio_port_role_t>(port.role);
+    halPort->type = static_cast<audio_port_type_t>(port.type);
+    memcpy(halPort->name,
+            port.name.c_str(),
+            std::min(port.name.size(), static_cast<size_t>(AUDIO_PORT_MAX_NAME_LEN)));
+    halPort->num_sample_rates =
+            std::min(port.sampleRates.size(), static_cast<size_t>(AUDIO_PORT_MAX_SAMPLING_RATES));
+    for (size_t i = 0; i < halPort->num_sample_rates; ++i) {
+        halPort->sample_rates[i] = port.sampleRates[i];
+    }
+    halPort->num_channel_masks =
+            std::min(port.channelMasks.size(), static_cast<size_t>(AUDIO_PORT_MAX_CHANNEL_MASKS));
+    for (size_t i = 0; i < halPort->num_channel_masks; ++i) {
+        halPort->channel_masks[i] = static_cast<audio_channel_mask_t>(port.channelMasks[i]);
+    }
+    halPort->num_formats =
+            std::min(port.formats.size(), static_cast<size_t>(AUDIO_PORT_MAX_FORMATS));
+    for (size_t i = 0; i < halPort->num_formats; ++i) {
+        halPort->formats[i] = static_cast<audio_format_t>(port.formats[i]);
+    }
+    halPort->num_gains = std::min(port.gains.size(), static_cast<size_t>(AUDIO_PORT_MAX_GAINS));
+    for (size_t i = 0; i < halPort->num_gains; ++i) {
+        audioGainToHal(port.gains[i], &halPort->gains[i]);
+    }
+    audioPortConfigToHal(port.activeConfig, &halPort->active_config);
+    switch (port.type) {
+        case AudioPortType::NONE: break;
+        case AudioPortType::DEVICE: {
+            halPort->ext.device.hw_module = port.ext.device.hwModule;
+            halPort->ext.device.type = static_cast<audio_devices_t>(port.ext.device.type);
+            memcpy(halPort->ext.device.address,
+                    port.ext.device.address.data(),
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AudioPortType::MIX: {
+            halPort->ext.mix.hw_module = port.ext.mix.hwModule;
+            halPort->ext.mix.handle = port.ext.mix.ioHandle;
+            halPort->ext.mix.latency_class =
+                    static_cast<audio_mix_latency_class_t>(port.ext.mix.latencyClass);
+            break;
+        }
+        case AudioPortType::SESSION: {
+            halPort->ext.session.session = static_cast<audio_session_t>(port.ext.session.session);
+            break;
+        }
+    }
+}
+
+Result Device::analyzeStatus(const char* funcName, int status) {
+    if (status != 0) {
+        ALOGW("Device %p %s: %s", mDevice, funcName, strerror(-status));
+    }
+    switch (status) {
+        case 0: return Result::OK;
+        case -EINVAL: return Result::INVALID_ARGUMENTS;
+        case -ENODATA: return Result::INVALID_STATE;
+        case -ENODEV: return Result::NOT_INITIALIZED;
+        case -ENOSYS: return Result::NOT_SUPPORTED;
+        default: return Result::INVALID_STATE;
+    }
+}
+
+char* Device::halGetParameters(const char* keys) {
+    return mDevice->get_parameters(mDevice, keys);
+}
+
+int Device::halSetParameters(const char* keysAndValues) {
+    return mDevice->set_parameters(mDevice, keysAndValues);
+}
+
+// Methods from ::android::hardware::audio::V2_0::IDevice follow.
+Return<Result> Device::initCheck()  {
+    return analyzeStatus("init_check", mDevice->init_check(mDevice));
+}
+
+Return<Result> Device::setMasterVolume(float volume)  {
+    Result retval(Result::NOT_SUPPORTED);
+    if (mDevice->set_master_volume != NULL) {
+        retval = analyzeStatus("set_master_volume", mDevice->set_master_volume(mDevice, volume));
+    }
+    return retval;
+}
+
+Return<void> Device::getMasterVolume(getMasterVolume_cb _hidl_cb)  {
+    Result retval(Result::NOT_SUPPORTED);
+    float volume = 0;
+    if (mDevice->get_master_volume != NULL) {
+        retval = analyzeStatus("get_master_volume", mDevice->get_master_volume(mDevice, &volume));
+    }
+    _hidl_cb(retval, volume);
+    return Void();
+}
+
+Return<Result> Device::setMicMute(bool mute)  {
+    return analyzeStatus("set_mic_mute", mDevice->set_mic_mute(mDevice, mute));
+}
+
+Return<void> Device::getMicMute(getMicMute_cb _hidl_cb)  {
+    bool mute = false;
+    Result retval = analyzeStatus("get_mic_mute", mDevice->get_mic_mute(mDevice, &mute));
+    _hidl_cb(retval, mute);
+    return Void();
+}
+
+Return<Result> Device::setMasterMute(bool mute)  {
+    Result retval(Result::NOT_SUPPORTED);
+    if (mDevice->set_master_mute != NULL) {
+        retval = analyzeStatus("set_master_mute", mDevice->set_master_mute(mDevice, mute));
+    }
+    return retval;
+}
+
+Return<void> Device::getMasterMute(getMasterMute_cb _hidl_cb)  {
+    Result retval(Result::NOT_SUPPORTED);
+    bool mute = false;
+    if (mDevice->get_master_mute != NULL) {
+        retval = analyzeStatus("get_master_mute", mDevice->get_master_mute(mDevice, &mute));
+    }
+    _hidl_cb(retval, mute);
+    return Void();
+}
+
+Return<void> Device::getInputBufferSize(
+        const AudioConfig& config, getInputBufferSize_cb _hidl_cb)  {
+    audio_config_t halConfig;
+    audioConfigToHal(config, &halConfig);
+    size_t halBufferSize = mDevice->get_input_buffer_size(mDevice, &halConfig);
+    Result retval(Result::INVALID_ARGUMENTS);
+    uint64_t bufferSize = 0;
+    if (halBufferSize != 0) {
+        retval = Result::OK;
+        bufferSize = halBufferSize;
+    }
+    _hidl_cb(retval, bufferSize);
+    return Void();
+}
+
+Return<void> Device::openOutputStream(
+        int32_t ioHandle,
+        const DeviceAddress& device,
+        const AudioConfig& config,
+        AudioOutputFlag flags,
+        openOutputStream_cb _hidl_cb)  {
+    audio_config_t halConfig;
+    audioConfigToHal(config, &halConfig);
+    audio_stream_out_t *halStream;
+    int status = mDevice->open_output_stream(
+            mDevice,
+            ioHandle,
+            static_cast<audio_devices_t>(device.device),
+            static_cast<audio_output_flags_t>(flags),
+            &halConfig,
+            &halStream,
+            deviceAddressToHal(device).c_str());
+    sp<IStreamOut> streamOut;
+    if (status == OK) {
+        streamOut = new StreamOut(mDevice, halStream);
+    }
+    _hidl_cb(analyzeStatus("open_output_stream", status), streamOut);
+    return Void();
+}
+
+Return<void> Device::openInputStream(
+        int32_t ioHandle,
+        const DeviceAddress& device,
+        const AudioConfig& config,
+        AudioInputFlag flags,
+        AudioSource source,
+        openInputStream_cb _hidl_cb)  {
+    audio_config_t halConfig;
+    audioConfigToHal(config, &halConfig);
+    audio_stream_in_t *halStream;
+    int status = mDevice->open_input_stream(
+            mDevice,
+            ioHandle,
+            static_cast<audio_devices_t>(device.device),
+            &halConfig,
+            &halStream,
+            static_cast<audio_input_flags_t>(flags),
+            deviceAddressToHal(device).c_str(),
+            static_cast<audio_source_t>(source));
+    sp<IStreamIn> streamIn;
+    if (status == OK) {
+        streamIn = new StreamIn(mDevice, halStream);
+    }
+    _hidl_cb(analyzeStatus("open_input_stream", status), streamIn);
+    return Void();
+}
+
+Return<void> Device::createAudioPatch(
+        const hidl_vec<AudioPortConfig>& sources,
+        const hidl_vec<AudioPortConfig>& sinks,
+        createAudioPatch_cb _hidl_cb)  {
+    Result retval(Result::NOT_SUPPORTED);
+    AudioPatchHandle patch = 0;
+    if (version() >= AUDIO_DEVICE_API_VERSION_3_0) {
+        std::unique_ptr<audio_port_config[]> halSources(audioPortConfigsToHal(sources));
+        std::unique_ptr<audio_port_config[]> halSinks(audioPortConfigsToHal(sinks));
+        audio_patch_handle_t halPatch;
+        retval = analyzeStatus(
+                "create_audio_patch",
+                mDevice->create_audio_patch(
+                        mDevice,
+                        sources.size(), &halSources[0],
+                        sinks.size(), &halSinks[0],
+                        &halPatch));
+        if (retval == Result::OK) {
+            patch = static_cast<AudioPatchHandle>(halPatch);
+        }
+    }
+    _hidl_cb(retval, patch);
+    return Void();
+}
+
+Return<Result> Device::releaseAudioPatch(int32_t patch)  {
+    if (version() >= AUDIO_DEVICE_API_VERSION_3_0) {
+        return analyzeStatus(
+                "release_audio_patch",
+                mDevice->release_audio_patch(mDevice, static_cast<audio_patch_handle_t>(patch)));
+    }
+    return Result::NOT_SUPPORTED;
+}
+
+Return<void> Device::getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb)  {
+    audio_port halPort;
+    audioPortToHal(port, &halPort);
+    Result retval = analyzeStatus("get_audio_port", mDevice->get_audio_port(mDevice, &halPort));
+    AudioPort resultPort = port;
+    if (retval == Result::OK) {
+        audioPortFromHal(halPort, &resultPort);
+    }
+    _hidl_cb(retval, resultPort);
+    return Void();
+}
+
+Return<Result> Device::setAudioPortConfig(const AudioPortConfig& config)  {
+    if (version() >= AUDIO_DEVICE_API_VERSION_3_0) {
+        struct audio_port_config halPortConfig;
+        audioPortConfigToHal(config, &halPortConfig);
+        return analyzeStatus(
+                "set_audio_port_config", mDevice->set_audio_port_config(mDevice, &halPortConfig));
+    }
+    return Result::NOT_SUPPORTED;
+}
+
+Return<AudioHwSync> Device::getHwAvSync()  {
+    int halHwAvSync;
+    Result retval = getParam(AudioParameter::keyHwAvSync, &halHwAvSync);
+    return retval == Result::OK ? halHwAvSync : AUDIO_HW_SYNC_INVALID;
+}
+
+Return<Result> Device::setScreenState(bool turnedOn)  {
+    return setParam(AudioParameter::keyScreenState, turnedOn);
+}
+
+Return<void> Device::getParameters(const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  {
+    getParametersImpl(keys, _hidl_cb);
+    return Void();
+}
+
+Return<Result> Device::setParameters(const hidl_vec<ParameterValue>& parameters)  {
+    return setParametersImpl(parameters);
+}
+
+Return<void> Device::debugDump(const native_handle_t* fd)  {
+    if (fd->numFds == 1) {
+        analyzeStatus("dump", mDevice->dump(mDevice, fd->data[0]));
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/Device.h b/audio/2.0/default/Device.h
new file mode 100644
index 0000000..d7b3128
--- /dev/null
+++ b/audio/2.0/default/Device.h
@@ -0,0 +1,147 @@
+/*
+ * 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_V2_0_Device_H_
+#define HIDL_GENERATED_android_hardware_audio_V2_0_Device_H_
+
+#include <memory>
+
+#include <media/AudioParameter.h>
+#include <hardware/audio.h>
+
+#include <android/hardware/audio/2.0/IDevice.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include "ParametersUtil.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::common::V2_0::AudioConfig;
+using ::android::hardware::audio::common::V2_0::AudioGain;
+using ::android::hardware::audio::common::V2_0::AudioGainConfig;
+using ::android::hardware::audio::common::V2_0::AudioGainMode;
+using ::android::hardware::audio::common::V2_0::AudioHwSync;
+using ::android::hardware::audio::common::V2_0::AudioInputFlag;
+using ::android::hardware::audio::common::V2_0::AudioMixLatencyClass;
+using ::android::hardware::audio::common::V2_0::AudioOffloadInfo;
+using ::android::hardware::audio::common::V2_0::AudioOutputFlag;
+using ::android::hardware::audio::common::V2_0::AudioPatchHandle;
+using ::android::hardware::audio::common::V2_0::AudioPort;
+using ::android::hardware::audio::common::V2_0::AudioPortConfig;
+using ::android::hardware::audio::common::V2_0::AudioPortConfigMask;
+using ::android::hardware::audio::common::V2_0::AudioPortRole;
+using ::android::hardware::audio::common::V2_0::AudioPortType;
+using ::android::hardware::audio::common::V2_0::AudioSource;
+using ::android::hardware::audio::common::V2_0::AudioStreamType;
+using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::V2_0::IDevice;
+using ::android::hardware::audio::V2_0::IStreamIn;
+using ::android::hardware::audio::V2_0::IStreamOut;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Device : public IDevice, public ParametersUtil {
+    explicit Device(audio_hw_device_t* device);
+
+    // Methods from ::android::hardware::audio::V2_0::IDevice follow.
+    Return<Result> initCheck()  override;
+    Return<Result> setMasterVolume(float volume)  override;
+    Return<void> getMasterVolume(getMasterVolume_cb _hidl_cb)  override;
+    Return<Result> setMicMute(bool mute)  override;
+    Return<void> getMicMute(getMicMute_cb _hidl_cb)  override;
+    Return<Result> setMasterMute(bool mute)  override;
+    Return<void> getMasterMute(getMasterMute_cb _hidl_cb)  override;
+    Return<void> getInputBufferSize(
+            const AudioConfig& config, getInputBufferSize_cb _hidl_cb)  override;
+    Return<void> openOutputStream(
+            int32_t ioHandle,
+            const DeviceAddress& device,
+            const AudioConfig& config,
+            AudioOutputFlag flags,
+            openOutputStream_cb _hidl_cb)  override;
+    Return<void> openInputStream(
+            int32_t ioHandle,
+            const DeviceAddress& device,
+            const AudioConfig& config,
+            AudioInputFlag flags,
+            AudioSource source,
+            openInputStream_cb _hidl_cb)  override;
+    Return<void> createAudioPatch(
+            const hidl_vec<AudioPortConfig>& sources,
+            const hidl_vec<AudioPortConfig>& sinks,
+            createAudioPatch_cb _hidl_cb)  override;
+    Return<Result> releaseAudioPatch(int32_t patch)  override;
+    Return<void> getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb)  override;
+    Return<Result> setAudioPortConfig(const AudioPortConfig& config)  override;
+    Return<AudioHwSync> getHwAvSync()  override;
+    Return<Result> setScreenState(bool turnedOn)  override;
+    Return<void> getParameters(
+            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
+    Return<void> debugDump(const native_handle_t* fd)  override;
+
+    // Utility methods for extending interfaces.
+    Result analyzeStatus(const char* funcName, int status);
+    audio_hw_device_t* device() const { return mDevice; }
+
+  private:
+    audio_hw_device_t *mDevice;
+
+    static void audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig);
+    static void audioGainConfigFromHal(
+            const struct audio_gain_config& halConfig, AudioGainConfig* config);
+    static void audioGainConfigToHal(
+            const AudioGainConfig& config, struct audio_gain_config* halConfig);
+    static void audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain);
+    static void audioGainToHal(const AudioGain& gain, struct audio_gain* halGain);
+    static void audioOffloadInfoToHal(
+            const AudioOffloadInfo& offload, audio_offload_info_t* halOffload);
+    static void audioPortConfigFromHal(
+            const struct audio_port_config& halConfig, AudioPortConfig* config);
+    static void audioPortConfigToHal(
+            const AudioPortConfig& config, struct audio_port_config* halConfig);
+    static std::unique_ptr<audio_port_config[]> audioPortConfigsToHal(
+            const hidl_vec<AudioPortConfig>& configs);
+    static void audioPortFromHal(const struct audio_port& halPort, AudioPort* port);
+    static void audioPortToHal(const AudioPort& port, struct audio_port* halPort);
+
+    virtual ~Device();
+
+    // Methods from ParametersUtil.
+    char* halGetParameters(const char* keys) override;
+    int halSetParameters(const char* keysAndValues) override;
+
+    uint32_t version() const { return mDevice->common.version; }
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_android_hardware_audio_V2_0_Device_H_
diff --git a/audio/2.0/default/DevicesFactory.cpp b/audio/2.0/default/DevicesFactory.cpp
new file mode 100644
index 0000000..1e087f2
--- /dev/null
+++ b/audio/2.0/default/DevicesFactory.cpp
@@ -0,0 +1,103 @@
+/*
+ * 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 "DevicesFactoryHAL"
+
+#include <string.h>
+
+#include <utils/Log.h>
+
+#include "Device.h"
+#include "DevicesFactory.h"
+#include "PrimaryDevice.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+// static
+const char* DevicesFactory::deviceToString(IDevicesFactory::Device device) {
+    switch (device) {
+        case IDevicesFactory::Device::PRIMARY: return AUDIO_HARDWARE_MODULE_ID_PRIMARY;
+        case IDevicesFactory::Device::A2DP: return AUDIO_HARDWARE_MODULE_ID_A2DP;
+        case IDevicesFactory::Device::USB: return AUDIO_HARDWARE_MODULE_ID_USB;
+        case IDevicesFactory::Device::R_SUBMIX: return AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX;
+    }
+}
+
+// static
+int DevicesFactory::loadAudioInterface(const char *if_name, audio_hw_device_t **dev)
+{
+    const hw_module_t *mod;
+    int rc;
+
+    rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, &mod);
+    if (rc) {
+        ALOGE("%s couldn't load audio hw module %s.%s (%s)", __func__,
+                AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
+        goto out;
+    }
+    rc = audio_hw_device_open(mod, dev);
+    if (rc) {
+        ALOGE("%s couldn't open audio hw device in %s.%s (%s)", __func__,
+                AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
+        goto out;
+    }
+    if ((*dev)->common.version < AUDIO_DEVICE_API_VERSION_MIN) {
+        ALOGE("%s wrong audio hw device version %04x", __func__, (*dev)->common.version);
+        rc = -EINVAL;
+        audio_hw_device_close(*dev);
+        goto out;
+    }
+    return OK;
+
+out:
+    *dev = NULL;
+    return rc;
+}
+
+// Methods from ::android::hardware::audio::V2_0::IDevicesFactory follow.
+Return<void> DevicesFactory::openDevice(IDevicesFactory::Device device, openDevice_cb _hidl_cb)  {
+    audio_hw_device_t *halDevice;
+    int halStatus = loadAudioInterface(deviceToString(device), &halDevice);
+    Result retval(Result::OK);
+    sp<IDevice> result;
+    if (halStatus == OK) {
+        if (device == IDevicesFactory::Device::PRIMARY) {
+            result = new PrimaryDevice(halDevice);
+        } else {
+            result = new ::android::hardware::audio::V2_0::implementation::Device(halDevice);
+        }
+    } else if (halStatus == -EINVAL) {
+        retval = Result::NOT_INITIALIZED;
+    } else {
+        retval = Result::INVALID_ARGUMENTS;
+    }
+    _hidl_cb(retval, result);
+    return Void();
+}
+
+IDevicesFactory* HIDL_FETCH_IDevicesFactory(const char* /* name */) {
+    return new DevicesFactory();
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/DevicesFactory.h b/audio/2.0/default/DevicesFactory.h
new file mode 100644
index 0000000..0ea9859
--- /dev/null
+++ b/audio/2.0/default/DevicesFactory.h
@@ -0,0 +1,59 @@
+/*
+ * 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_V2_0_DevicesFactory_H_
+#define HIDL_GENERATED_android_hardware_audio_V2_0_DevicesFactory_H_
+
+#include <hardware/audio.h>
+
+#include <android/hardware/audio/2.0/IDevicesFactory.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::V2_0::IDevice;
+using ::android::hardware::audio::V2_0::IDevicesFactory;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct DevicesFactory : public IDevicesFactory {
+    // Methods from ::android::hardware::audio::V2_0::IDevicesFactory follow.
+    Return<void> openDevice(IDevicesFactory::Device device, openDevice_cb _hidl_cb)  override;
+
+  private:
+    static const char* deviceToString(IDevicesFactory::Device device);
+    static int loadAudioInterface(const char *if_name, audio_hw_device_t **dev);
+
+};
+
+extern "C" IDevicesFactory* HIDL_FETCH_IDevicesFactory(const char* name);
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_android_hardware_audio_V2_0_DevicesFactory_H_
diff --git a/audio/2.0/default/ParametersUtil.cpp b/audio/2.0/default/ParametersUtil.cpp
new file mode 100644
index 0000000..75a60b9
--- /dev/null
+++ b/audio/2.0/default/ParametersUtil.cpp
@@ -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.
+ */
+
+#include "ParametersUtil.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+Result ParametersUtil::getParam(const char* name, bool* value) {
+    String8 halValue;
+    Result retval = getParam(name, &halValue);
+    *value = false;
+    if (retval == Result::OK) {
+        *value = !(halValue == AudioParameter::valueOff);
+    }
+    return retval;
+}
+
+Result ParametersUtil::getParam(const char* name, int* value) {
+    const String8 halName(name);
+    AudioParameter keys;
+    keys.addKey(halName);
+    std::unique_ptr<AudioParameter> params = getParams(keys);
+    status_t halStatus = params->getInt(halName, *value);
+    return halStatus == OK ? Result::OK : Result::INVALID_ARGUMENTS;
+}
+
+Result ParametersUtil::getParam(const char* name, String8* value) {
+    const String8 halName(name);
+    AudioParameter keys;
+    keys.addKey(halName);
+    std::unique_ptr<AudioParameter> params = getParams(keys);
+    status_t halStatus = params->get(halName, *value);
+    return halStatus == OK ? Result::OK : Result::INVALID_ARGUMENTS;
+}
+
+void ParametersUtil::getParametersImpl(
+        const hidl_vec<hidl_string>& keys,
+        std::function<void(Result retval, const hidl_vec<ParameterValue>& parameters)> cb)  {
+    AudioParameter halKeys;
+    for (size_t i = 0; i < keys.size(); ++i) {
+        halKeys.addKey(String8(keys[i].c_str()));
+    }
+    std::unique_ptr<AudioParameter> halValues = getParams(halKeys);
+    Result retval(Result::INVALID_ARGUMENTS);
+    hidl_vec<ParameterValue> result;
+    if (halValues->size() > 0) {
+        result.resize(halValues->size());
+        String8 halKey, halValue;
+        for (size_t i = 0; i < halValues->size(); ++i) {
+            status_t status = halValues->getAt(i, halKey, halValue);
+            if (status != OK) {
+                result.resize(0);
+                break;
+            }
+            result[i].key = halKey.string();
+            result[i].value = halValue.string();
+        }
+        if (result.size() != 0) {
+            retval = Result::OK;
+        }
+    }
+    cb(retval, result);
+}
+
+std::unique_ptr<AudioParameter> ParametersUtil::getParams(const AudioParameter& keys) {
+    String8 paramsAndValues;
+    char *halValues = halGetParameters(keys.keysToString().string());
+    if (halValues != NULL) {
+        paramsAndValues.setTo(halValues);
+        free(halValues);
+    } else {
+        paramsAndValues.clear();
+    }
+    return std::unique_ptr<AudioParameter>(new AudioParameter(paramsAndValues));
+}
+
+Result ParametersUtil::setParam(const char* name, bool value) {
+    AudioParameter param;
+    param.add(String8(name), String8(value ? AudioParameter::valueOn : AudioParameter::valueOff));
+    return setParams(param);
+}
+
+Result ParametersUtil::setParam(const char* name, int value) {
+    AudioParameter param;
+    param.addInt(String8(name), value);
+    return setParams(param);
+}
+
+Result ParametersUtil::setParam(const char* name, const char* value) {
+    AudioParameter param;
+    param.add(String8(name), String8(value));
+    return setParams(param);
+}
+
+Result ParametersUtil::setParametersImpl(const hidl_vec<ParameterValue>& parameters)  {
+    AudioParameter params;
+    for (size_t i = 0; i < parameters.size(); ++i) {
+        params.add(String8(parameters[i].key.c_str()), String8(parameters[i].value.c_str()));
+    }
+    return setParams(params);
+}
+
+Result ParametersUtil::setParams(const AudioParameter& param) {
+    int halStatus = halSetParameters(param.toString().string());
+    if (halStatus == OK)
+        return Result::OK;
+    else if (halStatus == -ENOSYS)
+        return Result::INVALID_STATE;
+    else
+        return Result::INVALID_ARGUMENTS;
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/ParametersUtil.h b/audio/2.0/default/ParametersUtil.h
new file mode 100644
index 0000000..49036dc
--- /dev/null
+++ b/audio/2.0/default/ParametersUtil.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 android_hardware_audio_V2_0_ParametersUtil_H_
+#define android_hardware_audio_V2_0_ParametersUtil_H_
+
+#include <functional>
+#include <memory>
+
+#include <android/hardware/audio/2.0/types.h>
+#include <hidl/HidlSupport.h>
+#include <media/AudioParameter.h>
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+
+class ParametersUtil {
+  public:
+    Result getParam(const char* name, bool* value);
+    Result getParam(const char* name, int* value);
+    Result getParam(const char* name, String8* value);
+    void getParametersImpl(
+            const hidl_vec<hidl_string>& keys,
+            std::function<void(Result retval, const hidl_vec<ParameterValue>& parameters)> cb);
+    std::unique_ptr<AudioParameter> getParams(const AudioParameter& keys);
+    Result setParam(const char* name, bool value);
+    Result setParam(const char* name, int value);
+    Result setParam(const char* name, const char* value);
+    Result setParametersImpl(const hidl_vec<ParameterValue>& parameters);
+    Result setParams(const AudioParameter& param);
+
+  protected:
+    virtual ~ParametersUtil() {}
+
+    virtual char* halGetParameters(const char* keys) = 0;
+    virtual int halSetParameters(const char* keysAndValues) = 0;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_audio_V2_0_ParametersUtil_H_
diff --git a/audio/2.0/default/PrimaryDevice.cpp b/audio/2.0/default/PrimaryDevice.cpp
new file mode 100644
index 0000000..9f5180c
--- /dev/null
+++ b/audio/2.0/default/PrimaryDevice.cpp
@@ -0,0 +1,189 @@
+/*
+ * 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 "PrimaryDeviceHAL"
+
+#include "PrimaryDevice.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+PrimaryDevice::PrimaryDevice(audio_hw_device_t* device)
+        : mDevice(new Device(device)) {
+}
+
+PrimaryDevice::~PrimaryDevice() {}
+
+// Methods from ::android::hardware::audio::V2_0::IDevice follow.
+Return<Result> PrimaryDevice::initCheck()  {
+    return mDevice->initCheck();
+}
+
+Return<Result> PrimaryDevice::setMasterVolume(float volume)  {
+    return mDevice->setMasterVolume(volume);
+}
+
+Return<void> PrimaryDevice::getMasterVolume(getMasterVolume_cb _hidl_cb)  {
+    return mDevice->getMasterVolume(_hidl_cb);
+}
+
+Return<Result> PrimaryDevice::setMicMute(bool mute)  {
+    return mDevice->setMicMute(mute);
+}
+
+Return<void> PrimaryDevice::getMicMute(getMicMute_cb _hidl_cb)  {
+    return mDevice->getMicMute(_hidl_cb);
+}
+
+Return<Result> PrimaryDevice::setMasterMute(bool mute)  {
+    return mDevice->setMasterMute(mute);
+}
+
+Return<void> PrimaryDevice::getMasterMute(getMasterMute_cb _hidl_cb)  {
+    return mDevice->getMasterMute(_hidl_cb);
+}
+
+Return<void> PrimaryDevice::getInputBufferSize(
+        const AudioConfig& config, getInputBufferSize_cb _hidl_cb)  {
+    return mDevice->getInputBufferSize(config, _hidl_cb);
+}
+
+Return<void> PrimaryDevice::openOutputStream(
+        int32_t ioHandle,
+        const DeviceAddress& device,
+        const AudioConfig& config,
+        AudioOutputFlag flags,
+        openOutputStream_cb _hidl_cb)  {
+    return mDevice->openOutputStream(ioHandle, device, config, flags, _hidl_cb);
+}
+
+Return<void> PrimaryDevice::openInputStream(
+        int32_t ioHandle,
+        const DeviceAddress& device,
+        const AudioConfig& config,
+        AudioInputFlag flags,
+        AudioSource source,
+        openInputStream_cb _hidl_cb)  {
+    return mDevice->openInputStream(ioHandle, device, config, flags, source, _hidl_cb);
+}
+
+Return<void> PrimaryDevice::createAudioPatch(
+        const hidl_vec<AudioPortConfig>& sources,
+        const hidl_vec<AudioPortConfig>& sinks,
+        createAudioPatch_cb _hidl_cb)  {
+    return mDevice->createAudioPatch(sources, sinks, _hidl_cb);
+}
+
+Return<Result> PrimaryDevice::releaseAudioPatch(int32_t patch)  {
+    return mDevice->releaseAudioPatch(patch);
+}
+
+Return<void> PrimaryDevice::getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb)  {
+    return mDevice->getAudioPort(port, _hidl_cb);
+}
+
+Return<Result> PrimaryDevice::setAudioPortConfig(const AudioPortConfig& config)  {
+    return mDevice->setAudioPortConfig(config);
+}
+
+Return<AudioHwSync> PrimaryDevice::getHwAvSync()  {
+    return mDevice->getHwAvSync();
+}
+
+Return<Result> PrimaryDevice::setScreenState(bool turnedOn)  {
+    return mDevice->setScreenState(turnedOn);
+}
+
+Return<void> PrimaryDevice::getParameters(
+        const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  {
+    return mDevice->getParameters(keys, _hidl_cb);
+}
+
+Return<Result> PrimaryDevice::setParameters(const hidl_vec<ParameterValue>& parameters)  {
+    return mDevice->setParameters(parameters);
+}
+
+Return<void> PrimaryDevice::debugDump(const native_handle_t* fd)  {
+    return mDevice->debugDump(fd);
+}
+
+
+// Methods from ::android::hardware::audio::V2_0::IPrimaryDevice follow.
+Return<Result> PrimaryDevice::setVoiceVolume(float volume)  {
+    return mDevice->analyzeStatus(
+            "set_voice_volume",
+            mDevice->device()->set_voice_volume(mDevice->device(), volume));
+}
+
+Return<Result> PrimaryDevice::setMode(AudioMode mode)  {
+    return mDevice->analyzeStatus(
+            "set_mode",
+            mDevice->device()->set_mode(mDevice->device(), static_cast<audio_mode_t>(mode)));
+}
+
+Return<void> PrimaryDevice::getBtScoNrecEnabled(getBtScoNrecEnabled_cb _hidl_cb)  {
+    bool enabled;
+    Result retval = mDevice->getParam(AudioParameter::keyBtNrec, &enabled);
+    _hidl_cb(retval, enabled);
+    return Void();
+}
+
+Return<Result> PrimaryDevice::setBtScoNrecEnabled(bool enabled)  {
+    return mDevice->setParam(AudioParameter::keyBtNrec, enabled);
+}
+
+Return<void> PrimaryDevice::getBtScoWidebandEnabled(getBtScoWidebandEnabled_cb _hidl_cb)  {
+    bool enabled;
+    Result retval = mDevice->getParam(AUDIO_PARAMETER_KEY_BT_SCO_WB, &enabled);
+    _hidl_cb(retval, enabled);
+    return Void();
+}
+
+Return<Result> PrimaryDevice::setBtScoWidebandEnabled(bool enabled)  {
+    return mDevice->setParam(AUDIO_PARAMETER_KEY_BT_SCO_WB, enabled);
+}
+
+Return<void> PrimaryDevice::getTtyMode(getTtyMode_cb _hidl_cb)  {
+    int halMode;
+    Result retval = mDevice->getParam(AUDIO_PARAMETER_KEY_TTY_MODE, &halMode);
+    TtyMode mode = retval == Result::OK ? TtyMode(halMode) : TtyMode::OFF;
+    _hidl_cb(retval, mode);
+    return Void();
+}
+
+Return<Result> PrimaryDevice::setTtyMode(IPrimaryDevice::TtyMode mode)  {
+    return mDevice->setParam(AUDIO_PARAMETER_KEY_TTY_MODE, static_cast<int>(mode));
+}
+
+Return<void> PrimaryDevice::getHacEnabled(getHacEnabled_cb _hidl_cb)  {
+    bool enabled;
+    Result retval = mDevice->getParam(AUDIO_PARAMETER_KEY_HAC, &enabled);
+    _hidl_cb(retval, enabled);
+    return Void();
+}
+
+Return<Result> PrimaryDevice::setHacEnabled(bool enabled)  {
+    return mDevice->setParam(AUDIO_PARAMETER_KEY_HAC, enabled);
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/PrimaryDevice.h b/audio/2.0/default/PrimaryDevice.h
new file mode 100644
index 0000000..4c5b590
--- /dev/null
+++ b/audio/2.0/default/PrimaryDevice.h
@@ -0,0 +1,117 @@
+/*
+ * 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_V2_0_PrimaryDevice_H_
+#define HIDL_GENERATED_android_hardware_audio_V2_0_PrimaryDevice_H_
+
+#include <android/hardware/audio/2.0/IPrimaryDevice.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include "Device.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::common::V2_0::AudioConfig;
+using ::android::hardware::audio::common::V2_0::AudioInputFlag;
+using ::android::hardware::audio::common::V2_0::AudioMode;
+using ::android::hardware::audio::common::V2_0::AudioOutputFlag;
+using ::android::hardware::audio::common::V2_0::AudioPort;
+using ::android::hardware::audio::common::V2_0::AudioPortConfig;
+using ::android::hardware::audio::common::V2_0::AudioSource;
+using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::V2_0::IDevice;
+using ::android::hardware::audio::V2_0::IPrimaryDevice;
+using ::android::hardware::audio::V2_0::IStreamIn;
+using ::android::hardware::audio::V2_0::IStreamOut;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct PrimaryDevice : public IPrimaryDevice {
+    explicit PrimaryDevice(audio_hw_device_t* device);
+
+    // Methods from ::android::hardware::audio::V2_0::IDevice follow.
+    Return<Result> initCheck()  override;
+    Return<Result> setMasterVolume(float volume)  override;
+    Return<void> getMasterVolume(getMasterVolume_cb _hidl_cb)  override;
+    Return<Result> setMicMute(bool mute)  override;
+    Return<void> getMicMute(getMicMute_cb _hidl_cb)  override;
+    Return<Result> setMasterMute(bool mute)  override;
+    Return<void> getMasterMute(getMasterMute_cb _hidl_cb)  override;
+    Return<void> getInputBufferSize(
+            const AudioConfig& config, getInputBufferSize_cb _hidl_cb)  override;
+    Return<void> openOutputStream(
+            int32_t ioHandle,
+            const DeviceAddress& device,
+            const AudioConfig& config,
+            AudioOutputFlag flags,
+            openOutputStream_cb _hidl_cb)  override;
+    Return<void> openInputStream(
+            int32_t ioHandle,
+            const DeviceAddress& device,
+            const AudioConfig& config,
+            AudioInputFlag flags,
+            AudioSource source,
+            openInputStream_cb _hidl_cb)  override;
+    Return<void> createAudioPatch(
+            const hidl_vec<AudioPortConfig>& sources,
+            const hidl_vec<AudioPortConfig>& sinks,
+            createAudioPatch_cb _hidl_cb)  override;
+    Return<Result> releaseAudioPatch(int32_t patch)  override;
+    Return<void> getAudioPort(const AudioPort& port, getAudioPort_cb _hidl_cb)  override;
+    Return<Result> setAudioPortConfig(const AudioPortConfig& config)  override;
+    Return<AudioHwSync> getHwAvSync()  override;
+    Return<Result> setScreenState(bool turnedOn)  override;
+    Return<void> getParameters(
+            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
+    Return<void> debugDump(const native_handle_t* fd)  override;
+
+    // Methods from ::android::hardware::audio::V2_0::IPrimaryDevice follow.
+    Return<Result> setVoiceVolume(float volume)  override;
+    Return<Result> setMode(AudioMode mode)  override;
+    Return<void> getBtScoNrecEnabled(getBtScoNrecEnabled_cb _hidl_cb)  override;
+    Return<Result> setBtScoNrecEnabled(bool enabled)  override;
+    Return<void> getBtScoWidebandEnabled(getBtScoWidebandEnabled_cb _hidl_cb)  override;
+    Return<Result> setBtScoWidebandEnabled(bool enabled)  override;
+    Return<void> getTtyMode(getTtyMode_cb _hidl_cb)  override;
+    Return<Result> setTtyMode(IPrimaryDevice::TtyMode mode)  override;
+    Return<void> getHacEnabled(getHacEnabled_cb _hidl_cb)  override;
+    Return<Result> setHacEnabled(bool enabled)  override;
+
+  private:
+    sp<Device> mDevice;
+
+    virtual ~PrimaryDevice();
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_android_hardware_audio_V2_0_PrimaryDevice_H_
diff --git a/audio/2.0/default/Stream.cpp b/audio/2.0/default/Stream.cpp
new file mode 100644
index 0000000..7616bec
--- /dev/null
+++ b/audio/2.0/default/Stream.cpp
@@ -0,0 +1,236 @@
+/*
+ * 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 <inttypes.h>
+
+#define LOG_TAG "StreamHAL"
+
+#include <hardware/audio.h>
+#include <hardware/audio_effect.h>
+#include <media/TypeConverter.h>
+#include <utils/Log.h>
+#include <utils/SortedVector.h>
+#include <utils/Vector.h>
+
+#include "Conversions.h"
+#include "EffectMap.h"
+#include "Stream.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+Stream::Stream(audio_stream_t* stream)
+        : mStream(stream) {
+}
+
+Stream::~Stream() {
+    mStream = nullptr;
+}
+
+Result Stream::analyzeStatus(const char* funcName, int status) {
+    if (status != 0) {
+        ALOGW("Stream %p %s: %s", mStream, funcName, strerror(-status));
+    }
+    switch (status) {
+        case 0: return Result::OK;
+        case -EINVAL: return Result::INVALID_ARGUMENTS;
+        case -ENODATA: return Result::INVALID_STATE;
+        case -ENODEV: return Result::NOT_INITIALIZED;
+        case -ENOSYS: return Result::NOT_SUPPORTED;
+        default: return Result::INVALID_STATE;
+    }
+}
+
+char* Stream::halGetParameters(const char* keys) {
+    return mStream->get_parameters(mStream, keys);
+}
+
+int Stream::halSetParameters(const char* keysAndValues) {
+    return mStream->set_parameters(mStream, keysAndValues);
+}
+
+// Methods from ::android::hardware::audio::V2_0::IStream follow.
+Return<uint64_t> Stream::getFrameSize()  {
+    // Needs to be implemented by interface subclasses. But can't be declared as pure virtual,
+    // since interface subclasses implementation do not inherit from this class.
+    LOG_ALWAYS_FATAL("Stream::getFrameSize is pure abstract");
+    return uint64_t {};
+}
+
+Return<uint64_t> Stream::getFrameCount()  {
+    int halFrameCount;
+    Result retval = getParam(AudioParameter::keyFrameCount, &halFrameCount);
+    return retval == Result::OK ? halFrameCount : 0;
+}
+
+Return<uint64_t> Stream::getBufferSize()  {
+    return mStream->get_buffer_size(mStream);
+}
+
+Return<uint32_t> Stream::getSampleRate()  {
+    return mStream->get_sample_rate(mStream);
+}
+
+Return<void> Stream::getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  {
+    String8 halListValue;
+    Result result = getParam(AudioParameter::keyStreamSupportedSamplingRates, &halListValue);
+    hidl_vec<uint32_t> sampleRates;
+    SortedVector<uint32_t> halSampleRates;
+    if (result == Result::OK) {
+        halSampleRates = samplingRatesFromString(
+                halListValue.string(), AudioParameter::valueListSeparator);
+        sampleRates.setToExternal(halSampleRates.editArray(), halSampleRates.size());
+    }
+    _hidl_cb(sampleRates);
+    return Void();
+}
+
+Return<Result> Stream::setSampleRate(uint32_t sampleRateHz)  {
+    return setParam(AudioParameter::keySamplingRate, static_cast<int>(sampleRateHz));
+}
+
+Return<AudioChannelMask> Stream::getChannelMask()  {
+    return AudioChannelMask(mStream->get_channels(mStream));
+}
+
+Return<void> Stream::getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  {
+    String8 halListValue;
+    Result result = getParam(AudioParameter::keyStreamSupportedChannels, &halListValue);
+    hidl_vec<AudioChannelMask> channelMasks;
+    SortedVector<audio_channel_mask_t> halChannelMasks;
+    if (result == Result::OK) {
+        halChannelMasks = channelMasksFromString(
+                halListValue.string(), AudioParameter::valueListSeparator);
+        channelMasks.resize(halChannelMasks.size());
+        for (size_t i = 0; i < halChannelMasks.size(); ++i) {
+            channelMasks[i] = AudioChannelMask(halChannelMasks[i]);
+        }
+    }
+     _hidl_cb(channelMasks);
+    return Void();
+}
+
+Return<Result> Stream::setChannelMask(AudioChannelMask mask)  {
+    return setParam(AudioParameter::keyChannels, static_cast<int>(mask));
+}
+
+Return<AudioFormat> Stream::getFormat()  {
+    return AudioFormat(mStream->get_format(mStream));
+}
+
+Return<void> Stream::getSupportedFormats(getSupportedFormats_cb _hidl_cb)  {
+    String8 halListValue;
+    Result result = getParam(AudioParameter::keyStreamSupportedFormats, &halListValue);
+    hidl_vec<AudioFormat> formats;
+    Vector<audio_format_t> halFormats;
+    if (result == Result::OK) {
+        halFormats = formatsFromString(halListValue.string(), AudioParameter::valueListSeparator);
+        formats.resize(halFormats.size());
+        for (size_t i = 0; i < halFormats.size(); ++i) {
+            formats[i] = AudioFormat(halFormats[i]);
+        }
+    }
+     _hidl_cb(formats);
+    return Void();
+}
+
+Return<Result> Stream::setFormat(AudioFormat format)  {
+    return setParam(AudioParameter::keyFormat, static_cast<int>(format));
+}
+
+Return<void> Stream::getAudioProperties(getAudioProperties_cb _hidl_cb)  {
+    uint32_t halSampleRate = mStream->get_sample_rate(mStream);
+    audio_channel_mask_t halMask = mStream->get_channels(mStream);
+    audio_format_t halFormat = mStream->get_format(mStream);
+    _hidl_cb(halSampleRate, AudioChannelMask(halMask), AudioFormat(halFormat));
+    return Void();
+}
+
+Return<Result> Stream::addEffect(uint64_t effectId)  {
+    effect_handle_t halEffect = EffectMap::getInstance().get(effectId);
+    if (halEffect != NULL) {
+        return analyzeStatus("add_audio_effect", mStream->add_audio_effect(mStream, halEffect));
+    } else {
+        ALOGW("Invalid effect ID passed from client: %" PRIu64, effectId);
+        return Result::INVALID_ARGUMENTS;
+    }
+}
+
+Return<Result> Stream::removeEffect(uint64_t effectId)  {
+    effect_handle_t halEffect = EffectMap::getInstance().get(effectId);
+    if (halEffect != NULL) {
+        return analyzeStatus(
+                "remove_audio_effect", mStream->remove_audio_effect(mStream, halEffect));
+    } else {
+        ALOGW("Invalid effect ID passed from client: %" PRIu64, effectId);
+        return Result::INVALID_ARGUMENTS;
+    }
+}
+
+Return<Result> Stream::standby()  {
+    return analyzeStatus("standby", mStream->standby(mStream));
+}
+
+Return<AudioDevice> Stream::getDevice()  {
+    return AudioDevice(mStream->get_device(mStream));
+}
+
+Return<Result> Stream::setDevice(const DeviceAddress& address)  {
+    char* halDeviceAddress =
+            audio_device_address_to_parameter(
+                    static_cast<audio_devices_t>(address.device),
+                    deviceAddressToHal(address).c_str());
+    AudioParameter params((String8(halDeviceAddress)));
+    free(halDeviceAddress);
+    params.addInt(
+            String8(AudioParameter::keyRouting), static_cast<audio_devices_t>(address.device));
+    return setParams(params);
+}
+
+Return<Result> Stream::setConnectedState(const DeviceAddress& address, bool connected)  {
+    return setParam(
+            connected ? AudioParameter::keyStreamConnect : AudioParameter::keyStreamDisconnect,
+            deviceAddressToHal(address).c_str());
+}
+
+Return<Result> Stream::setHwAvSync(uint32_t hwAvSync)  {
+    return setParam(AudioParameter::keyStreamHwAvSync, static_cast<int>(hwAvSync));
+}
+
+Return<void> Stream::getParameters(const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  {
+    getParametersImpl(keys, _hidl_cb);
+    return Void();
+}
+
+Return<Result> Stream::setParameters(const hidl_vec<ParameterValue>& parameters)  {
+    return setParametersImpl(parameters);
+}
+
+Return<void> Stream::debugDump(const native_handle_t* fd)  {
+    if (fd->numFds == 1) {
+        analyzeStatus("dump", mStream->dump(mStream, fd->data[0]));
+    }
+    return Void();
+}
+
+} // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/Stream.h b/audio/2.0/default/Stream.h
new file mode 100644
index 0000000..f28fbff
--- /dev/null
+++ b/audio/2.0/default/Stream.h
@@ -0,0 +1,94 @@
+/*
+ * 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_V2_0_Stream_H_
+#define HIDL_GENERATED_android_hardware_audio_V2_0_Stream_H_
+
+#include <android/hardware/audio/2.0/IStream.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include "ParametersUtil.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::common::V2_0::AudioChannelMask;
+using ::android::hardware::audio::common::V2_0::AudioDevice;
+using ::android::hardware::audio::common::V2_0::AudioFormat;
+using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::V2_0::IStream;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct Stream : public IStream, public ParametersUtil {
+    explicit Stream(audio_stream_t* stream);
+
+    // Methods from ::android::hardware::audio::V2_0::IStream follow.
+    Return<uint64_t> getFrameSize()  override;
+    Return<uint64_t> getFrameCount()  override;
+    Return<uint64_t> getBufferSize()  override;
+    Return<uint32_t> getSampleRate()  override;
+    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
+    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
+    Return<AudioChannelMask> getChannelMask()  override;
+    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
+    Return<Result> setChannelMask(AudioChannelMask mask)  override;
+    Return<AudioFormat> getFormat()  override;
+    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
+    Return<Result> setFormat(AudioFormat format)  override;
+    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
+    Return<Result> addEffect(uint64_t effectId)  override;
+    Return<Result> removeEffect(uint64_t effectId)  override;
+    Return<Result> standby()  override;
+    Return<AudioDevice> getDevice()  override;
+    Return<Result> setDevice(const DeviceAddress& address)  override;
+    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
+    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
+    Return<void> getParameters(
+            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
+    Return<void> debugDump(const native_handle_t* fd)  override;
+
+    // Utility methods for extending interfaces.
+    Result analyzeStatus(const char* funcName, int status);
+
+  private:
+    audio_stream_t *mStream;
+
+    virtual ~Stream();
+
+    // Methods from ParametersUtil.
+    char* halGetParameters(const char* keys) override;
+    int halSetParameters(const char* keysAndValues) override;
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_android_hardware_audio_V2_0_Stream_H_
diff --git a/audio/2.0/default/StreamIn.cpp b/audio/2.0/default/StreamIn.cpp
new file mode 100644
index 0000000..b590d1a
--- /dev/null
+++ b/audio/2.0/default/StreamIn.cpp
@@ -0,0 +1,191 @@
+/*
+ * 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 "StreamInHAL"
+
+#include <hardware/audio.h>
+#include <utils/Log.h>
+
+#include "StreamIn.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+StreamIn::StreamIn(audio_hw_device_t* device, audio_stream_in_t* stream)
+        : mDevice(device), mStream(stream), mStreamCommon(new Stream(&stream->common)) {
+}
+
+StreamIn::~StreamIn() {
+    mDevice->close_input_stream(mDevice, mStream);
+    mStream = nullptr;
+    mDevice = nullptr;
+}
+
+// Methods from ::android::hardware::audio::V2_0::IStream follow.
+Return<uint64_t> StreamIn::getFrameSize()  {
+    return audio_stream_in_frame_size(mStream);
+}
+
+Return<uint64_t> StreamIn::getFrameCount()  {
+    return mStreamCommon->getFrameCount();
+}
+
+Return<uint64_t> StreamIn::getBufferSize()  {
+    return mStreamCommon->getBufferSize();
+}
+
+Return<uint32_t> StreamIn::getSampleRate()  {
+    return mStreamCommon->getSampleRate();
+}
+
+Return<void> StreamIn::getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  {
+    return mStreamCommon->getSupportedSampleRates(_hidl_cb);
+}
+
+Return<Result> StreamIn::setSampleRate(uint32_t sampleRateHz)  {
+    return mStreamCommon->setSampleRate(sampleRateHz);
+}
+
+Return<AudioChannelMask> StreamIn::getChannelMask()  {
+    return mStreamCommon->getChannelMask();
+}
+
+Return<void> StreamIn::getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  {
+    return mStreamCommon->getSupportedChannelMasks(_hidl_cb);
+}
+
+Return<Result> StreamIn::setChannelMask(AudioChannelMask mask)  {
+    return mStreamCommon->setChannelMask(mask);
+}
+
+Return<AudioFormat> StreamIn::getFormat()  {
+    return mStreamCommon->getFormat();
+}
+
+Return<void> StreamIn::getSupportedFormats(getSupportedFormats_cb _hidl_cb)  {
+    return mStreamCommon->getSupportedFormats(_hidl_cb);
+}
+
+Return<Result> StreamIn::setFormat(AudioFormat format)  {
+    return mStreamCommon->setFormat(format);
+}
+
+Return<void> StreamIn::getAudioProperties(getAudioProperties_cb _hidl_cb)  {
+    return mStreamCommon->getAudioProperties(_hidl_cb);
+}
+
+Return<Result> StreamIn::addEffect(uint64_t effectId)  {
+    return mStreamCommon->addEffect(effectId);
+}
+
+Return<Result> StreamIn::removeEffect(uint64_t effectId)  {
+    return mStreamCommon->removeEffect(effectId);
+}
+
+Return<Result> StreamIn::standby()  {
+    return mStreamCommon->standby();
+}
+
+Return<AudioDevice> StreamIn::getDevice()  {
+    return mStreamCommon->getDevice();
+}
+
+Return<Result> StreamIn::setDevice(const DeviceAddress& address)  {
+    return mStreamCommon->setDevice(address);
+}
+
+Return<Result> StreamIn::setConnectedState(const DeviceAddress& address, bool connected)  {
+    return mStreamCommon->setConnectedState(address, connected);
+}
+
+Return<Result> StreamIn::setHwAvSync(uint32_t hwAvSync)  {
+    return mStreamCommon->setHwAvSync(hwAvSync);
+}
+
+Return<void> StreamIn::getParameters(const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb) {
+    return mStreamCommon->getParameters(keys, _hidl_cb);
+}
+
+Return<Result> StreamIn::setParameters(const hidl_vec<ParameterValue>& parameters)  {
+    return mStreamCommon->setParameters(parameters);
+}
+
+Return<void> StreamIn::debugDump(const native_handle_t* fd)  {
+    return mStreamCommon->debugDump(fd);
+}
+
+
+// Methods from ::android::hardware::audio::V2_0::IStreamIn follow.
+Return<void> StreamIn::getAudioSource(getAudioSource_cb _hidl_cb)  {
+    int halSource;
+    Result retval = mStreamCommon->getParam(AudioParameter::keyInputSource, &halSource);
+    AudioSource source(AudioSource::DEFAULT);
+    if (retval == Result::OK) {
+        source = AudioSource(halSource);
+    }
+    _hidl_cb(retval, source);
+    return Void();
+}
+
+Return<Result> StreamIn::setGain(float gain)  {
+    return mStreamCommon->analyzeStatus("set_gain", mStream->set_gain(mStream, gain));
+}
+
+Return<void> StreamIn::read(uint64_t size, read_cb _hidl_cb)  {
+    // TODO(mnaganov): Replace with FMQ version.
+    hidl_vec<uint8_t> data;
+    data.resize(size);
+    Result retval(Result::OK);
+    ssize_t readResult = mStream->read(mStream, &data[0], data.size());
+    if (readResult >= 0 && static_cast<size_t>(readResult) != data.size()) {
+        data.resize(readResult);
+    } else if (readResult < 0) {
+        data.resize(0);
+        retval = mStreamCommon->analyzeStatus("read", readResult);
+    }
+    _hidl_cb(retval, data);
+    return Void();
+}
+
+Return<uint32_t> StreamIn::getInputFramesLost()  {
+    return mStream->get_input_frames_lost(mStream);
+}
+
+Return<void> StreamIn::getCapturePosition(getCapturePosition_cb _hidl_cb)  {
+    Result retval(Result::NOT_SUPPORTED);
+    uint64_t frames = 0, time = 0;
+    if (mStream->get_capture_position != NULL) {
+        int64_t halFrames, halTime;
+        retval = mStreamCommon->analyzeStatus(
+                "get_capture_position",
+                mStream->get_capture_position(mStream, &halFrames, &halTime));
+        if (retval == Result::OK) {
+            frames = halFrames;
+            time = halTime;
+        }
+    }
+    _hidl_cb(retval, frames, time);
+    return Void();
+}
+
+} // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/StreamIn.h b/audio/2.0/default/StreamIn.h
new file mode 100644
index 0000000..83f620c
--- /dev/null
+++ b/audio/2.0/default/StreamIn.h
@@ -0,0 +1,98 @@
+/*
+ * 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_V2_0_StreamIn_H_
+#define HIDL_GENERATED_android_hardware_audio_V2_0_StreamIn_H_
+
+#include <android/hardware/audio/2.0/IStreamIn.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include "Stream.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::common::V2_0::AudioChannelMask;
+using ::android::hardware::audio::common::V2_0::AudioDevice;
+using ::android::hardware::audio::common::V2_0::AudioFormat;
+using ::android::hardware::audio::common::V2_0::AudioSource;
+using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::V2_0::IStream;
+using ::android::hardware::audio::V2_0::IStreamIn;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct StreamIn : public IStreamIn {
+    StreamIn(audio_hw_device_t* device, audio_stream_in_t* stream);
+
+    // Methods from ::android::hardware::audio::V2_0::IStream follow.
+    Return<uint64_t> getFrameSize()  override;
+    Return<uint64_t> getFrameCount()  override;
+    Return<uint64_t> getBufferSize()  override;
+    Return<uint32_t> getSampleRate()  override;
+    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
+    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
+    Return<AudioChannelMask> getChannelMask()  override;
+    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
+    Return<Result> setChannelMask(AudioChannelMask mask)  override;
+    Return<AudioFormat> getFormat()  override;
+    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
+    Return<Result> setFormat(AudioFormat format)  override;
+    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
+    Return<Result> addEffect(uint64_t effectId)  override;
+    Return<Result> removeEffect(uint64_t effectId)  override;
+    Return<Result> standby()  override;
+    Return<AudioDevice> getDevice()  override;
+    Return<Result> setDevice(const DeviceAddress& address)  override;
+    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
+    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
+    Return<void> getParameters(
+            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
+    Return<void> debugDump(const native_handle_t* fd)  override;
+
+    // Methods from ::android::hardware::audio::V2_0::IStreamIn follow.
+    Return<void> getAudioSource(getAudioSource_cb _hidl_cb)  override;
+    Return<Result> setGain(float gain)  override;
+    Return<void> read(uint64_t size, read_cb _hidl_cb)  override;
+    Return<uint32_t> getInputFramesLost()  override;
+    Return<void> getCapturePosition(getCapturePosition_cb _hidl_cb)  override;
+
+  private:
+    audio_hw_device_t *mDevice;
+    audio_stream_in_t *mStream;
+    sp<Stream> mStreamCommon;
+
+    virtual ~StreamIn();
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_android_hardware_audio_V2_0_StreamIn_H_
diff --git a/audio/2.0/default/StreamOut.cpp b/audio/2.0/default/StreamOut.cpp
new file mode 100644
index 0000000..34bae29
--- /dev/null
+++ b/audio/2.0/default/StreamOut.cpp
@@ -0,0 +1,275 @@
+/*
+ * 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 "StreamOutHAL"
+
+#include <hardware/audio.h>
+#include <utils/Log.h>
+
+#include "StreamOut.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+StreamOut::StreamOut(audio_hw_device_t* device, audio_stream_out_t* stream)
+        : mDevice(device), mStream(stream), mStreamCommon(new Stream(&stream->common)) {
+}
+
+StreamOut::~StreamOut() {
+    mCallback.clear();
+    mDevice->close_output_stream(mDevice, mStream);
+    mStream = nullptr;
+    mDevice = nullptr;
+}
+
+// Methods from ::android::hardware::audio::V2_0::IStream follow.
+Return<uint64_t> StreamOut::getFrameSize()  {
+    return audio_stream_out_frame_size(mStream);
+}
+
+Return<uint64_t> StreamOut::getFrameCount()  {
+    return mStreamCommon->getFrameCount();
+}
+
+Return<uint64_t> StreamOut::getBufferSize()  {
+    return mStreamCommon->getBufferSize();
+}
+
+Return<uint32_t> StreamOut::getSampleRate()  {
+    return mStreamCommon->getSampleRate();
+}
+
+Return<void> StreamOut::getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  {
+    return mStreamCommon->getSupportedSampleRates(_hidl_cb);
+}
+
+Return<Result> StreamOut::setSampleRate(uint32_t sampleRateHz)  {
+    return mStreamCommon->setSampleRate(sampleRateHz);
+}
+
+Return<AudioChannelMask> StreamOut::getChannelMask()  {
+    return mStreamCommon->getChannelMask();
+}
+
+Return<void> StreamOut::getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  {
+    return mStreamCommon->getSupportedChannelMasks(_hidl_cb);
+}
+
+Return<Result> StreamOut::setChannelMask(AudioChannelMask mask)  {
+    return mStreamCommon->setChannelMask(mask);
+}
+
+Return<AudioFormat> StreamOut::getFormat()  {
+    return mStreamCommon->getFormat();
+}
+
+Return<void> StreamOut::getSupportedFormats(getSupportedFormats_cb _hidl_cb)  {
+    return mStreamCommon->getSupportedFormats(_hidl_cb);
+}
+
+Return<Result> StreamOut::setFormat(AudioFormat format)  {
+    return mStreamCommon->setFormat(format);
+}
+
+Return<void> StreamOut::getAudioProperties(getAudioProperties_cb _hidl_cb)  {
+    return mStreamCommon->getAudioProperties(_hidl_cb);
+}
+
+Return<Result> StreamOut::addEffect(uint64_t effectId)  {
+    return mStreamCommon->addEffect(effectId);
+}
+
+Return<Result> StreamOut::removeEffect(uint64_t effectId)  {
+    return mStreamCommon->removeEffect(effectId);
+}
+
+Return<Result> StreamOut::standby()  {
+    return mStreamCommon->standby();
+}
+
+Return<AudioDevice> StreamOut::getDevice()  {
+    return mStreamCommon->getDevice();
+}
+
+Return<Result> StreamOut::setDevice(const DeviceAddress& address)  {
+    return mStreamCommon->setDevice(address);
+}
+
+Return<Result> StreamOut::setConnectedState(const DeviceAddress& address, bool connected)  {
+    return mStreamCommon->setConnectedState(address, connected);
+}
+
+Return<Result> StreamOut::setHwAvSync(uint32_t hwAvSync)  {
+    return mStreamCommon->setHwAvSync(hwAvSync);
+}
+
+Return<void> StreamOut::getParameters(
+        const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  {
+    return mStreamCommon->getParameters(keys, _hidl_cb);
+}
+
+Return<Result> StreamOut::setParameters(const hidl_vec<ParameterValue>& parameters)  {
+    return mStreamCommon->setParameters(parameters);
+}
+
+Return<void> StreamOut::debugDump(const native_handle_t* fd)  {
+    return mStreamCommon->debugDump(fd);
+}
+
+
+// Methods from ::android::hardware::audio::V2_0::IStreamOut follow.
+Return<uint32_t> StreamOut::getLatency()  {
+    return mStream->get_latency(mStream);
+}
+
+Return<Result> StreamOut::setVolume(float left, float right)  {
+    Result retval(Result::NOT_SUPPORTED);
+    if (mStream->set_volume != NULL) {
+        retval = mStreamCommon->analyzeStatus(
+                "set_volume", mStream->set_volume(mStream, left, right));
+    }
+    return retval;
+}
+
+Return<void> StreamOut::write(const hidl_vec<uint8_t>& data, write_cb _hidl_cb)  {
+    // TODO(mnaganov): Replace with FMQ version.
+    Result retval(Result::OK);
+    uint64_t written = 0;
+    ssize_t writeResult = mStream->write(mStream, &data[0], data.size());
+    if (writeResult >= 0) {
+        written = writeResult;
+    } else {
+        retval = mStreamCommon->analyzeStatus("write", writeResult);
+        written = 0;
+    }
+    _hidl_cb(retval, written);
+    return Void();
+}
+
+Return<void> StreamOut::getRenderPosition(getRenderPosition_cb _hidl_cb)  {
+    uint32_t halDspFrames;
+    Result retval = mStreamCommon->analyzeStatus(
+            "get_render_position", mStream->get_render_position(mStream, &halDspFrames));
+    _hidl_cb(retval, halDspFrames);
+    return Void();
+}
+
+Return<void> StreamOut::getNextWriteTimestamp(getNextWriteTimestamp_cb _hidl_cb)  {
+    Result retval(Result::NOT_SUPPORTED);
+    int64_t timestampUs = 0;
+    if (mStream->get_next_write_timestamp != NULL) {
+        retval = mStreamCommon->analyzeStatus(
+                "get_next_write_timestamp",
+                mStream->get_next_write_timestamp(mStream, &timestampUs));
+    }
+    _hidl_cb(retval, timestampUs);
+    return Void();
+}
+
+Return<Result> StreamOut::setCallback(const sp<IStreamOutCallback>& callback)  {
+    if (mStream->set_callback == NULL) return Result::NOT_SUPPORTED;
+    int result = mStream->set_callback(mStream, StreamOut::asyncCallback, this);
+    if (result == 0) {
+        mCallback = callback;
+    }
+    return mStreamCommon->analyzeStatus("set_callback", result);
+}
+
+// static
+int StreamOut::asyncCallback(stream_callback_event_t event, void*, void *cookie) {
+    wp<StreamOut> weakSelf(reinterpret_cast<StreamOut*>(cookie));
+    sp<StreamOut> self = weakSelf.promote();
+    if (self == 0) return 0;
+    sp<IStreamOutCallback> callback = self->mCallback.promote();
+    if (callback == 0) return 0;
+    ALOGV("asyncCallback() event %d", event);
+    switch (event) {
+        case STREAM_CBK_EVENT_WRITE_READY:
+            callback->onWriteReady();
+            break;
+        case STREAM_CBK_EVENT_DRAIN_READY:
+            callback->onDrainReady();
+            break;
+        case STREAM_CBK_EVENT_ERROR:
+            callback->onError();
+            break;
+        default:
+            ALOGW("asyncCallback() unknown event %d", event);
+            break;
+    }
+    return 0;
+}
+
+Return<void> StreamOut::supportsPauseAndResume(supportsPauseAndResume_cb _hidl_cb)  {
+    _hidl_cb(mStream->pause != NULL, mStream->resume != NULL);
+    return Void();
+}
+
+Return<Result> StreamOut::pause()  {
+    return mStream->pause != NULL ?
+            mStreamCommon->analyzeStatus("pause", mStream->pause(mStream)) :
+            Result::NOT_SUPPORTED;
+}
+
+Return<Result> StreamOut::resume()  {
+    return mStream->resume != NULL ?
+            mStreamCommon->analyzeStatus("resume", mStream->resume(mStream)) :
+            Result::NOT_SUPPORTED;
+}
+
+Return<bool> StreamOut::supportsDrain()  {
+    return mStream->drain != NULL;
+}
+
+Return<Result> StreamOut::drain(AudioDrain type)  {
+    return mStream->drain != NULL ?
+            mStreamCommon->analyzeStatus(
+                    "drain", mStream->drain(mStream, static_cast<audio_drain_type_t>(type))) :
+            Result::NOT_SUPPORTED;
+}
+
+Return<Result> StreamOut::flush()  {
+    return mStream->flush != NULL ?
+            mStreamCommon->analyzeStatus("flush", mStream->flush(mStream)) :
+            Result::NOT_SUPPORTED;
+}
+
+Return<void> StreamOut::getPresentationPosition(getPresentationPosition_cb _hidl_cb)  {
+    Result retval(Result::NOT_SUPPORTED);
+    uint64_t frames = 0;
+    TimeSpec timeStamp = { 0, 0 };
+    if (mStream->get_presentation_position != NULL) {
+        struct timespec halTimeStamp;
+        retval = mStreamCommon->analyzeStatus(
+                "get_presentation_position",
+                mStream->get_presentation_position(mStream, &frames, &halTimeStamp));
+        if (retval == Result::OK) {
+            timeStamp.tvSec = halTimeStamp.tv_sec;
+            timeStamp.tvNSec = halTimeStamp.tv_nsec;
+        }
+    }
+    _hidl_cb(retval, frames, timeStamp);
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/2.0/default/StreamOut.h b/audio/2.0/default/StreamOut.h
new file mode 100644
index 0000000..51b7df8
--- /dev/null
+++ b/audio/2.0/default/StreamOut.h
@@ -0,0 +1,113 @@
+/*
+ * 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_V2_0_StreamOut_H_
+#define HIDL_GENERATED_android_hardware_audio_V2_0_StreamOut_H_
+
+#include <android/hardware/audio/2.0/IStreamOut.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include "Stream.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::common::V2_0::AudioChannelMask;
+using ::android::hardware::audio::common::V2_0::AudioDevice;
+using ::android::hardware::audio::common::V2_0::AudioFormat;
+using ::android::hardware::audio::V2_0::AudioDrain;
+using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::V2_0::IStream;
+using ::android::hardware::audio::V2_0::IStreamOut;
+using ::android::hardware::audio::V2_0::IStreamOutCallback;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::audio::V2_0::TimeSpec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct StreamOut : public IStreamOut {
+    StreamOut(audio_hw_device_t* device, audio_stream_out_t* stream);
+
+    // Methods from ::android::hardware::audio::V2_0::IStream follow.
+    Return<uint64_t> getFrameSize()  override;
+    Return<uint64_t> getFrameCount()  override;
+    Return<uint64_t> getBufferSize()  override;
+    Return<uint32_t> getSampleRate()  override;
+    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
+    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
+    Return<AudioChannelMask> getChannelMask()  override;
+    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
+    Return<Result> setChannelMask(AudioChannelMask mask)  override;
+    Return<AudioFormat> getFormat()  override;
+    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
+    Return<Result> setFormat(AudioFormat format)  override;
+    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
+    Return<Result> addEffect(uint64_t effectId)  override;
+    Return<Result> removeEffect(uint64_t effectId)  override;
+    Return<Result> standby()  override;
+    Return<AudioDevice> getDevice()  override;
+    Return<Result> setDevice(const DeviceAddress& address)  override;
+    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
+    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
+    Return<void> getParameters(
+            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
+    Return<void> debugDump(const native_handle_t* fd)  override;
+
+    // Methods from ::android::hardware::audio::V2_0::IStreamOut follow.
+    Return<uint32_t> getLatency()  override;
+    Return<Result> setVolume(float left, float right)  override;
+    Return<void> write(const hidl_vec<uint8_t>& data, write_cb _hidl_cb)  override;
+    Return<void> getRenderPosition(getRenderPosition_cb _hidl_cb)  override;
+    Return<void> getNextWriteTimestamp(getNextWriteTimestamp_cb _hidl_cb)  override;
+    Return<Result> setCallback(const sp<IStreamOutCallback>& callback)  override;
+    Return<void> supportsPauseAndResume(supportsPauseAndResume_cb _hidl_cb)  override;
+    Return<Result> pause()  override;
+    Return<Result> resume()  override;
+    Return<bool> supportsDrain()  override;
+    Return<Result> drain(AudioDrain type)  override;
+    Return<Result> flush()  override;
+    Return<void> getPresentationPosition(getPresentationPosition_cb _hidl_cb)  override;
+
+  private:
+    audio_hw_device_t *mDevice;
+    audio_stream_out_t *mStream;
+    sp<Stream> mStreamCommon;
+    // Do not store sp<> to avoid creating a reference loop if the entity that holds
+    // onto the output stream owns or implements the callback.
+    wp<IStreamOutCallback> mCallback;
+
+    virtual ~StreamOut();
+
+    static int asyncCallback(stream_callback_event_t event, void *param, void *cookie);
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_android_hardware_audio_V2_0_StreamOut_H_
diff --git a/audio/2.0/default/service.cpp b/audio/2.0/default/service.cpp
index 39708c2..147f7b9 100644
--- a/audio/2.0/default/service.cpp
+++ b/audio/2.0/default/service.cpp
@@ -14,28 +14,23 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "soundtriggerhal"
+#define LOG_TAG "audiohalservice"
 
-#include <hwbinder/IInterface.h>
-#include <hwbinder/IPCThreadState.h>
-#include <hwbinder/ProcessState.h>
-#include <utils/Errors.h>
-#include <utils/Log.h>
-#include <utils/Looper.h>
-#include <utils/StrongPointer.h>
+#include <hidl/LegacySupport.h>
+#include <android/hardware/audio/2.0/IDevicesFactory.h>
+#include <android/hardware/audio/effect/2.0/IEffectsFactory.h>
 #include <android/hardware/soundtrigger/2.0/ISoundTriggerHw.h>
 
 using android::hardware::IPCThreadState;
 using android::hardware::ProcessState;
+using android::hardware::audio::effect::V2_0::IEffectsFactory;
+using android::hardware::audio::V2_0::IDevicesFactory;
 using android::hardware::soundtrigger::V2_0::ISoundTriggerHw;
+using android::hardware::registerPassthroughServiceImplementation;
 
 int main(int /* argc */, char* /* argv */ []) {
-    android::sp<ISoundTriggerHw> service =
-            ISoundTriggerHw::getService("sound_trigger.primary", true /* getStub */);
-
-    service->registerAsService("sound_trigger.primary");
-
-    ProcessState::self()->setThreadPoolMaxThreadCount(0);
-    ProcessState::self()->startThreadPool();
-    IPCThreadState::self()->joinThreadPool();
+    registerPassthroughServiceImplementation<IDevicesFactory>("audio_devices_factory");
+    registerPassthroughServiceImplementation<IEffectsFactory>("audio_effects_factory");
+    registerPassthroughServiceImplementation<ISoundTriggerHw>("sound_trigger.primary");
+    return android::hardware::launchRpcServer(16);
 }