diff --git a/audio/common/2.0/default/Android.mk b/audio/common/2.0/default/Android.mk
index aa60eb2..8e2fed4 100644
--- a/audio/common/2.0/default/Android.mk
+++ b/audio/common/2.0/default/Android.mk
@@ -20,10 +20,13 @@
 LOCAL_MODULE := android.hardware.audio.common@2.0-util
 LOCAL_SRC_FILES := \
     EffectMap.cpp \
+    HidlUtils.cpp \
 
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
 
 LOCAL_SHARED_LIBRARIES := \
     libutils \
+    libhidlbase \
+    android.hardware.audio.common@2.0 \
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/audio/common/2.0/default/HidlUtils.cpp b/audio/common/2.0/default/HidlUtils.cpp
new file mode 100644
index 0000000..f25fc5c
--- /dev/null
+++ b/audio/common/2.0/default/HidlUtils.cpp
@@ -0,0 +1,328 @@
+/*
+ * 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 <string.h>
+
+#include "HidlUtils.h"
+
+using ::android::hardware::audio::common::V2_0::AudioChannelMask;
+using ::android::hardware::audio::common::V2_0::AudioDevice;
+using ::android::hardware::audio::common::V2_0::AudioFormat;
+using ::android::hardware::audio::common::V2_0::AudioGainMode;
+using ::android::hardware::audio::common::V2_0::AudioMixLatencyClass;
+using ::android::hardware::audio::common::V2_0::AudioPortConfigMask;
+using ::android::hardware::audio::common::V2_0::AudioPortRole;
+using ::android::hardware::audio::common::V2_0::AudioPortType;
+using ::android::hardware::audio::common::V2_0::AudioSource;
+using ::android::hardware::audio::common::V2_0::AudioStreamType;
+
+namespace android {
+
+void HidlUtils::audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config) {
+    config->sampleRateHz = halConfig.sample_rate;
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    config->format = AudioFormat(halConfig.format);
+    audioOffloadInfoFromHal(halConfig.offload_info, &config->offloadInfo);
+    config->frameCount = halConfig.frame_count;
+}
+
+void HidlUtils::audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig) {
+    memset(halConfig, 0, sizeof(audio_config_t));
+    halConfig->sample_rate = config.sampleRateHz;
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    halConfig->format = static_cast<audio_format_t>(config.format);
+    audioOffloadInfoToHal(config.offloadInfo, &halConfig->offload_info);
+    halConfig->frame_count = config.frameCount;
+}
+
+void HidlUtils::audioGainConfigFromHal(
+        const struct audio_gain_config& halConfig, AudioGainConfig* config) {
+    config->index = halConfig.index;
+    config->mode = AudioGainMode(halConfig.mode);
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
+        config->values[i] = halConfig.values[i];
+    }
+    config->rampDurationMs = halConfig.ramp_duration_ms;
+}
+
+void HidlUtils::audioGainConfigToHal(
+        const AudioGainConfig& config, struct audio_gain_config* halConfig) {
+    halConfig->index = config.index;
+    halConfig->mode = static_cast<audio_gain_mode_t>(config.mode);
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    memset(halConfig->values, 0, sizeof(halConfig->values));
+    for (size_t i = 0; i < sizeof(audio_channel_mask_t) * 8; ++i) {
+        halConfig->values[i] = config.values[i];
+    }
+    halConfig->ramp_duration_ms = config.rampDurationMs;
+}
+
+void HidlUtils::audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain) {
+    gain->mode = AudioGainMode(halGain.mode);
+    gain->channelMask = AudioChannelMask(halGain.channel_mask);
+    gain->minValue = halGain.min_value;
+    gain->maxValue = halGain.max_value;
+    gain->defaultValue = halGain.default_value;
+    gain->stepValue = halGain.step_value;
+    gain->minRampMs = halGain.min_ramp_ms;
+    gain->maxRampMs = halGain.max_ramp_ms;
+}
+
+void HidlUtils::audioGainToHal(const AudioGain& gain, struct audio_gain* halGain) {
+    halGain->mode = static_cast<audio_gain_mode_t>(gain.mode);
+    halGain->channel_mask = static_cast<audio_channel_mask_t>(gain.channelMask);
+    halGain->min_value = gain.minValue;
+    halGain->max_value = gain.maxValue;
+    halGain->default_value = gain.defaultValue;
+    halGain->step_value = gain.stepValue;
+    halGain->min_ramp_ms = gain.minRampMs;
+    halGain->max_ramp_ms = gain.maxRampMs;
+}
+
+void HidlUtils::audioOffloadInfoFromHal(
+        const audio_offload_info_t& halOffload, AudioOffloadInfo* offload) {
+    offload->sampleRateHz = halOffload.sample_rate;
+    offload->channelMask = AudioChannelMask(halOffload.channel_mask);
+    offload->streamType = AudioStreamType(halOffload.stream_type);
+    offload->bitRatePerSecond = halOffload.bit_rate;
+    offload->durationMicroseconds = halOffload.duration_us;
+    offload->hasVideo = halOffload.has_video;
+    offload->isStreaming = halOffload.is_streaming;
+}
+
+void HidlUtils::audioOffloadInfoToHal(
+        const AudioOffloadInfo& offload, audio_offload_info_t* halOffload) {
+    *halOffload = AUDIO_INFO_INITIALIZER;
+    halOffload->sample_rate = offload.sampleRateHz;
+    halOffload->channel_mask = static_cast<audio_channel_mask_t>(offload.channelMask);
+    halOffload->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;
+}
+
+void HidlUtils::audioPortConfigFromHal(
+        const struct audio_port_config& halConfig, AudioPortConfig* config) {
+    config->id = halConfig.id;
+    config->role = AudioPortRole(halConfig.role);
+    config->type = AudioPortType(halConfig.type);
+    config->configMask = AudioPortConfigMask(halConfig.config_mask);
+    config->sampleRateHz = halConfig.sample_rate;
+    config->channelMask = AudioChannelMask(halConfig.channel_mask);
+    config->format = AudioFormat(halConfig.format);
+    audioGainConfigFromHal(halConfig.gain, &config->gain);
+    switch (halConfig.type) {
+        case AUDIO_PORT_TYPE_NONE: break;
+        case AUDIO_PORT_TYPE_DEVICE: {
+            config->ext.device.hwModule = halConfig.ext.device.hw_module;
+            config->ext.device.type = AudioDevice(halConfig.ext.device.type);
+            memcpy(config->ext.device.address.data(),
+                    halConfig.ext.device.address,
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AUDIO_PORT_TYPE_MIX: {
+            config->ext.mix.hwModule = halConfig.ext.mix.hw_module;
+            config->ext.mix.ioHandle = halConfig.ext.mix.handle;
+            if (halConfig.role == AUDIO_PORT_ROLE_SOURCE) {
+                config->ext.mix.useCase.source = AudioSource(halConfig.ext.mix.usecase.source);
+            } else if (halConfig.role == AUDIO_PORT_ROLE_SINK) {
+                config->ext.mix.useCase.stream = AudioStreamType(halConfig.ext.mix.usecase.stream);
+            }
+            break;
+        }
+        case AUDIO_PORT_TYPE_SESSION: {
+            config->ext.session.session = halConfig.ext.session.session;
+            break;
+        }
+    }
+}
+
+void HidlUtils::audioPortConfigToHal(
+        const AudioPortConfig& config, struct audio_port_config* halConfig) {
+    memset(halConfig, 0, sizeof(audio_port_config));
+    halConfig->id = config.id;
+    halConfig->role = static_cast<audio_port_role_t>(config.role);
+    halConfig->type = static_cast<audio_port_type_t>(config.type);
+    halConfig->config_mask = static_cast<unsigned int>(config.configMask);
+    halConfig->sample_rate = config.sampleRateHz;
+    halConfig->channel_mask = static_cast<audio_channel_mask_t>(config.channelMask);
+    halConfig->format = static_cast<audio_format_t>(config.format);
+    audioGainConfigToHal(config.gain, &halConfig->gain);
+    switch (config.type) {
+        case AudioPortType::NONE: break;
+        case AudioPortType::DEVICE: {
+            halConfig->ext.device.hw_module = config.ext.device.hwModule;
+            halConfig->ext.device.type = static_cast<audio_devices_t>(config.ext.device.type);
+            memcpy(halConfig->ext.device.address,
+                    config.ext.device.address.data(),
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AudioPortType::MIX: {
+            halConfig->ext.mix.hw_module = config.ext.mix.hwModule;
+            halConfig->ext.mix.handle = config.ext.mix.ioHandle;
+            if (config.role == AudioPortRole::SOURCE) {
+                halConfig->ext.mix.usecase.source =
+                        static_cast<audio_source_t>(config.ext.mix.useCase.source);
+            } else if (config.role == AudioPortRole::SINK) {
+                halConfig->ext.mix.usecase.stream =
+                        static_cast<audio_stream_type_t>(config.ext.mix.useCase.stream);
+            }
+            break;
+        }
+        case AudioPortType::SESSION: {
+            halConfig->ext.session.session =
+                    static_cast<audio_session_t>(config.ext.session.session);
+            break;
+        }
+    }
+}
+
+void HidlUtils::audioPortConfigsFromHal(
+        unsigned int numHalConfigs, const struct audio_port_config *halConfigs,
+        hidl_vec<AudioPortConfig> *configs) {
+    configs->resize(numHalConfigs);
+    for (unsigned int i = 0; i < numHalConfigs; ++i) {
+        audioPortConfigFromHal(halConfigs[i], &(*configs)[i]);
+    }
+}
+
+std::unique_ptr<audio_port_config[]> HidlUtils::audioPortConfigsToHal(
+        const hidl_vec<AudioPortConfig>& configs) {
+    std::unique_ptr<audio_port_config[]> halConfigs(new audio_port_config[configs.size()]);
+    for (size_t i = 0; i < configs.size(); ++i) {
+        audioPortConfigToHal(configs[i], &halConfigs[i]);
+    }
+    return halConfigs;
+}
+
+void HidlUtils::audioPortFromHal(const struct audio_port& halPort, AudioPort* port) {
+    port->id = halPort.id;
+    port->role = AudioPortRole(halPort.role);
+    port->type = AudioPortType(halPort.type);
+    port->name.setToExternal(halPort.name, strlen(halPort.name));
+    port->sampleRates.resize(halPort.num_sample_rates);
+    for (size_t i = 0; i < halPort.num_sample_rates; ++i) {
+        port->sampleRates[i] = halPort.sample_rates[i];
+    }
+    port->channelMasks.resize(halPort.num_channel_masks);
+    for (size_t i = 0; i < halPort.num_channel_masks; ++i) {
+        port->channelMasks[i] = AudioChannelMask(halPort.channel_masks[i]);
+    }
+    port->formats.resize(halPort.num_formats);
+    for (size_t i = 0; i < halPort.num_formats; ++i) {
+        port->formats[i] = AudioFormat(halPort.formats[i]);
+    }
+    port->gains.resize(halPort.num_gains);
+    for (size_t i = 0; i < halPort.num_gains; ++i) {
+        audioGainFromHal(halPort.gains[i], &port->gains[i]);
+    }
+    audioPortConfigFromHal(halPort.active_config, &port->activeConfig);
+    switch (halPort.type) {
+        case AUDIO_PORT_TYPE_NONE: break;
+        case AUDIO_PORT_TYPE_DEVICE: {
+            port->ext.device.hwModule = halPort.ext.device.hw_module;
+            port->ext.device.type = AudioDevice(halPort.ext.device.type);
+            memcpy(port->ext.device.address.data(),
+                    halPort.ext.device.address,
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AUDIO_PORT_TYPE_MIX: {
+            port->ext.mix.hwModule = halPort.ext.mix.hw_module;
+            port->ext.mix.ioHandle = halPort.ext.mix.handle;
+            port->ext.mix.latencyClass = AudioMixLatencyClass(halPort.ext.mix.latency_class);
+            break;
+        }
+        case AUDIO_PORT_TYPE_SESSION: {
+            port->ext.session.session = halPort.ext.session.session;
+            break;
+        }
+    }
+}
+
+void HidlUtils::audioPortToHal(const AudioPort& port, struct audio_port* halPort) {
+    memset(halPort, 0, sizeof(audio_port));
+    halPort->id = port.id;
+    halPort->role = static_cast<audio_port_role_t>(port.role);
+    halPort->type = static_cast<audio_port_type_t>(port.type);
+    memcpy(halPort->name,
+            port.name.c_str(),
+            std::min(port.name.size(), static_cast<size_t>(AUDIO_PORT_MAX_NAME_LEN)));
+    halPort->num_sample_rates =
+            std::min(port.sampleRates.size(), static_cast<size_t>(AUDIO_PORT_MAX_SAMPLING_RATES));
+    for (size_t i = 0; i < halPort->num_sample_rates; ++i) {
+        halPort->sample_rates[i] = port.sampleRates[i];
+    }
+    halPort->num_channel_masks =
+            std::min(port.channelMasks.size(), static_cast<size_t>(AUDIO_PORT_MAX_CHANNEL_MASKS));
+    for (size_t i = 0; i < halPort->num_channel_masks; ++i) {
+        halPort->channel_masks[i] = static_cast<audio_channel_mask_t>(port.channelMasks[i]);
+    }
+    halPort->num_formats =
+            std::min(port.formats.size(), static_cast<size_t>(AUDIO_PORT_MAX_FORMATS));
+    for (size_t i = 0; i < halPort->num_formats; ++i) {
+        halPort->formats[i] = static_cast<audio_format_t>(port.formats[i]);
+    }
+    halPort->num_gains = std::min(port.gains.size(), static_cast<size_t>(AUDIO_PORT_MAX_GAINS));
+    for (size_t i = 0; i < halPort->num_gains; ++i) {
+        audioGainToHal(port.gains[i], &halPort->gains[i]);
+    }
+    audioPortConfigToHal(port.activeConfig, &halPort->active_config);
+    switch (port.type) {
+        case AudioPortType::NONE: break;
+        case AudioPortType::DEVICE: {
+            halPort->ext.device.hw_module = port.ext.device.hwModule;
+            halPort->ext.device.type = static_cast<audio_devices_t>(port.ext.device.type);
+            memcpy(halPort->ext.device.address,
+                    port.ext.device.address.data(),
+                    AUDIO_DEVICE_MAX_ADDRESS_LEN);
+            break;
+        }
+        case AudioPortType::MIX: {
+            halPort->ext.mix.hw_module = port.ext.mix.hwModule;
+            halPort->ext.mix.handle = port.ext.mix.ioHandle;
+            halPort->ext.mix.latency_class =
+                    static_cast<audio_mix_latency_class_t>(port.ext.mix.latencyClass);
+            break;
+        }
+        case AudioPortType::SESSION: {
+            halPort->ext.session.session = static_cast<audio_session_t>(port.ext.session.session);
+            break;
+        }
+    }
+}
+
+void HidlUtils::uuidFromHal(const audio_uuid_t& halUuid, Uuid* uuid) {
+    uuid->timeLow = halUuid.timeLow;
+    uuid->timeMid = halUuid.timeMid;
+    uuid->versionAndTimeHigh = halUuid.timeHiAndVersion;
+    uuid->variantAndClockSeqHigh = halUuid.clockSeq;
+    memcpy(uuid->node.data(), halUuid.node, uuid->node.size());
+}
+
+void HidlUtils::uuidToHal(const Uuid& uuid, audio_uuid_t* halUuid) {
+    halUuid->timeLow = uuid.timeLow;
+    halUuid->timeMid = uuid.timeMid;
+    halUuid->timeHiAndVersion = uuid.versionAndTimeHigh;
+    halUuid->clockSeq = uuid.variantAndClockSeqHigh;
+    memcpy(halUuid->node, uuid.node.data(), uuid.node.size());
+}
+
+}  // namespace android
diff --git a/audio/common/2.0/default/HidlUtils.h b/audio/common/2.0/default/HidlUtils.h
new file mode 100644
index 0000000..3fde4d7
--- /dev/null
+++ b/audio/common/2.0/default/HidlUtils.h
@@ -0,0 +1,67 @@
+/*
+ * 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_Hidl_Utils_H_
+#define android_hardware_audio_V2_0_Hidl_Utils_H_
+
+#include <memory>
+
+#include <android/hardware/audio/common/2.0/types.h>
+#include <system/audio.h>
+
+using ::android::hardware::audio::common::V2_0::AudioConfig;
+using ::android::hardware::audio::common::V2_0::AudioGain;
+using ::android::hardware::audio::common::V2_0::AudioGainConfig;
+using ::android::hardware::audio::common::V2_0::AudioOffloadInfo;
+using ::android::hardware::audio::common::V2_0::AudioPort;
+using ::android::hardware::audio::common::V2_0::AudioPortConfig;
+using ::android::hardware::audio::common::V2_0::Uuid;
+using ::android::hardware::hidl_vec;
+
+namespace android {
+
+class HidlUtils {
+  public:
+    static void audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config);
+    static void audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig);
+    static void audioGainConfigFromHal(
+            const struct audio_gain_config& halConfig, AudioGainConfig* config);
+    static void audioGainConfigToHal(
+            const AudioGainConfig& config, struct audio_gain_config* halConfig);
+    static void audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain);
+    static void audioGainToHal(const AudioGain& gain, struct audio_gain* halGain);
+    static void audioOffloadInfoFromHal(
+            const audio_offload_info_t& halOffload, AudioOffloadInfo* offload);
+    static void audioOffloadInfoToHal(
+            const AudioOffloadInfo& offload, audio_offload_info_t* halOffload);
+    static void audioPortConfigFromHal(
+            const struct audio_port_config& halConfig, AudioPortConfig* config);
+    static void audioPortConfigToHal(
+            const AudioPortConfig& config, struct audio_port_config* halConfig);
+    static void audioPortConfigsFromHal(
+            unsigned int numHalConfigs, const struct audio_port_config *halConfigs,
+            hidl_vec<AudioPortConfig> *configs);
+    static std::unique_ptr<audio_port_config[]> audioPortConfigsToHal(
+            const hidl_vec<AudioPortConfig>& configs);
+    static void audioPortFromHal(const struct audio_port& halPort, AudioPort* port);
+    static void audioPortToHal(const AudioPort& port, struct audio_port* halPort);
+    static void uuidFromHal(const audio_uuid_t& halUuid, Uuid* uuid);
+    static void uuidToHal(const Uuid& uuid, audio_uuid_t* halUuid);
+};
+
+}  // namespace android
+
+#endif  // android_hardware_audio_V2_0_Hidl_Utils_H_