diff --git a/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h b/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h
index 414eede..b7c1cc9 100644
--- a/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h
+++ b/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h
@@ -225,6 +225,10 @@
     return stringToAudioChannelMask(mask) == AudioChannelMask::UNKNOWN;
 }
 
+static inline bool isUnknownAudioContentType(const std::string& contentType) {
+    return stringToAudioContentType(contentType) == AudioContentType::UNKNOWN;
+}
+
 static inline bool isUnknownAudioDevice(const std::string& device) {
     return stringToAudioDevice(device) == AudioDevice::UNKNOWN && !isVendorExtension(device);
 }
@@ -237,6 +241,10 @@
     return stringToAudioGainMode(mode) == AudioGainMode::UNKNOWN;
 }
 
+static inline bool isUnknownAudioInOutFlag(const std::string& flag) {
+    return stringToAudioInOutFlag(flag) == AudioInOutFlag::UNKNOWN;
+}
+
 static inline bool isUnknownAudioSource(const std::string& source) {
     return stringToAudioSource(source) == AudioSource::UNKNOWN;
 }
diff --git a/audio/common/all-versions/default/7.0/HidlUtils.cpp b/audio/common/all-versions/default/7.0/HidlUtils.cpp
index 1a66282..c985a70 100644
--- a/audio/common/all-versions/default/7.0/HidlUtils.cpp
+++ b/audio/common/all-versions/default/7.0/HidlUtils.cpp
@@ -95,6 +95,25 @@
     return NO_ERROR;
 }
 
+status_t HidlUtils::audioChannelMasksFromHal(const std::vector<std::string>& halChannelMasks,
+                                             hidl_vec<AudioChannelMask>* channelMasks) {
+    hidl_vec<AudioChannelMask> tempChannelMasks;
+    tempChannelMasks.resize(halChannelMasks.size());
+    size_t tempPos = 0;
+    for (const auto& halChannelMask : halChannelMasks) {
+        if (!halChannelMask.empty() && !xsd::isUnknownAudioChannelMask(halChannelMask)) {
+            tempChannelMasks[tempPos++] = halChannelMask;
+        }
+    }
+    if (tempPos == tempChannelMasks.size()) {
+        *channelMasks = std::move(tempChannelMasks);
+    } else {
+        *channelMasks = hidl_vec<AudioChannelMask>(tempChannelMasks.begin(),
+                                                   tempChannelMasks.begin() + tempPos);
+    }
+    return halChannelMasks.size() == channelMasks->size() ? NO_ERROR : BAD_VALUE;
+}
+
 status_t HidlUtils::audioChannelMaskToHal(const AudioChannelMask& channelMask,
                                           audio_channel_mask_t* halChannelMask) {
     if (!xsd::isUnknownAudioChannelMask(channelMask) &&
@@ -127,6 +146,28 @@
     return result;
 }
 
+status_t HidlUtils::audioContentTypeFromHal(const audio_content_type_t halContentType,
+                                            AudioContentType* contentType) {
+    *contentType = audio_content_type_to_string(halContentType);
+    if (!contentType->empty() && !xsd::isUnknownAudioContentType(*contentType)) {
+        return NO_ERROR;
+    }
+    ALOGE("Unknown audio content type value 0x%X", halContentType);
+    *contentType = toString(xsd::AudioContentType::AUDIO_CONTENT_TYPE_UNKNOWN);
+    return BAD_VALUE;
+}
+
+status_t HidlUtils::audioContentTypeToHal(const AudioContentType& contentType,
+                                          audio_content_type_t* halContentType) {
+    if (!xsd::isUnknownAudioContentType(contentType) &&
+        audio_content_type_from_string(contentType.c_str(), halContentType)) {
+        return NO_ERROR;
+    }
+    ALOGE("Unknown audio content type \"%s\"", contentType.c_str());
+    *halContentType = AUDIO_CONTENT_TYPE_UNKNOWN;
+    return BAD_VALUE;
+}
+
 status_t HidlUtils::audioDeviceTypeFromHal(audio_devices_t halDevice, AudioDevice* device) {
     *device = audio_device_to_string(halDevice);
     if (!device->empty() && !xsd::isUnknownAudioDevice(*device)) {
@@ -155,6 +196,24 @@
     return BAD_VALUE;
 }
 
+status_t HidlUtils::audioFormatsFromHal(const std::vector<std::string>& halFormats,
+                                        hidl_vec<AudioFormat>* formats) {
+    hidl_vec<AudioFormat> tempFormats;
+    tempFormats.resize(halFormats.size());
+    size_t tempPos = 0;
+    for (const auto& halFormat : halFormats) {
+        if (!halFormat.empty() && !xsd::isUnknownAudioFormat(halFormat)) {
+            tempFormats[tempPos++] = halFormat;
+        }
+    }
+    if (tempPos == tempFormats.size()) {
+        *formats = std::move(tempFormats);
+    } else {
+        *formats = hidl_vec<AudioFormat>(tempFormats.begin(), tempFormats.begin() + tempPos);
+    }
+    return halFormats.size() == formats->size() ? NO_ERROR : BAD_VALUE;
+}
+
 status_t HidlUtils::audioFormatToHal(const AudioFormat& format, audio_format_t* halFormat) {
     if (!xsd::isUnknownAudioFormat(format) && audio_format_from_string(format.c_str(), halFormat)) {
         return NO_ERROR;
diff --git a/audio/common/all-versions/default/Android.bp b/audio/common/all-versions/default/Android.bp
index b83a58a..45f0b8f 100644
--- a/audio/common/all-versions/default/Android.bp
+++ b/audio/common/all-versions/default/Android.bp
@@ -43,6 +43,7 @@
     name: "android.hardware.audio.common-util@2-6",
     srcs: [
         "HidlUtils.cpp",
+        "HidlUtilsCommon.cpp",
         "UuidUtils.cpp",
     ],
 }
@@ -132,6 +133,7 @@
     defaults: ["android.hardware.audio.common-util_default"],
     srcs: [
         "7.0/HidlUtils.cpp",
+        "HidlUtilsCommon.cpp",
         "UuidUtils.cpp",
     ],
     shared_libs: [
diff --git a/audio/common/all-versions/default/HidlUtils.cpp b/audio/common/all-versions/default/HidlUtils.cpp
index ab3c1c7..c0dcd80 100644
--- a/audio/common/all-versions/default/HidlUtils.cpp
+++ b/audio/common/all-versions/default/HidlUtils.cpp
@@ -28,7 +28,7 @@
 namespace CPP_VERSION {
 namespace implementation {
 
-status_t HidlUtils::audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config) {
+status_t HidlUtils::audioConfigFromHal(const audio_config_t& halConfig, bool, AudioConfig* config) {
     config->sampleRateHz = halConfig.sample_rate;
     config->channelMask = EnumBitfield<AudioChannelMask>(halConfig.channel_mask);
     config->format = AudioFormat(halConfig.format);
@@ -47,8 +47,8 @@
     return NO_ERROR;
 }
 
-void HidlUtils::audioGainConfigFromHal(const struct audio_gain_config& halConfig,
-                                       AudioGainConfig* config) {
+status_t HidlUtils::audioGainConfigFromHal(const struct audio_gain_config& halConfig, bool,
+                                           AudioGainConfig* config) {
     config->index = halConfig.index;
     config->mode = EnumBitfield<AudioGainMode>(halConfig.mode);
     config->channelMask = EnumBitfield<AudioChannelMask>(halConfig.channel_mask);
@@ -56,6 +56,7 @@
         config->values[i] = halConfig.values[i];
     }
     config->rampDurationMs = halConfig.ramp_duration_ms;
+    return NO_ERROR;
 }
 
 status_t HidlUtils::audioGainConfigToHal(const AudioGainConfig& config,
@@ -71,7 +72,7 @@
     return NO_ERROR;
 }
 
-void HidlUtils::audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain) {
+status_t HidlUtils::audioGainFromHal(const struct audio_gain& halGain, bool, AudioGain* gain) {
     gain->mode = EnumBitfield<AudioGainMode>(halGain.mode);
     gain->channelMask = EnumBitfield<AudioChannelMask>(halGain.channel_mask);
     gain->minValue = halGain.min_value;
@@ -80,6 +81,7 @@
     gain->stepValue = halGain.step_value;
     gain->minRampMs = halGain.min_ramp_ms;
     gain->maxRampMs = halGain.max_ramp_ms;
+    return NO_ERROR;
 }
 
 status_t HidlUtils::audioGainToHal(const AudioGain& gain, struct audio_gain* halGain) {
@@ -182,7 +184,7 @@
     config->sampleRateHz = halConfig.sample_rate;
     config->channelMask = EnumBitfield<AudioChannelMask>(halConfig.channel_mask);
     config->format = AudioFormat(halConfig.format);
-    audioGainConfigFromHal(halConfig.gain, &config->gain);
+    audioGainConfigFromHal(halConfig.gain, false /*isInput--ignored*/, &config->gain);
     switch (halConfig.type) {
         case AUDIO_PORT_TYPE_NONE:
             break;
@@ -272,7 +274,7 @@
     }
     port->gains.resize(halPort.num_gains);
     for (size_t i = 0; i < halPort.num_gains; ++i) {
-        audioGainFromHal(halPort.gains[i], &port->gains[i]);
+        audioGainFromHal(halPort.gains[i], false /*isInput--ignored*/, &port->gains[i]);
     }
     audioPortConfigFromHal(halPort.active_config, &port->activeConfig);
     switch (halPort.type) {
@@ -351,6 +353,18 @@
     return NO_ERROR;
 }
 
+#if MAJOR_VERSION >= 5
+status_t HidlUtils::deviceAddressToHal(const DeviceAddress& device, audio_devices_t* halDeviceType,
+                                       char* halDeviceAddress) {
+    return deviceAddressToHalImpl(device, halDeviceType, halDeviceAddress);
+}
+
+status_t HidlUtils::deviceAddressFromHal(audio_devices_t halDeviceType,
+                                         const char* halDeviceAddress, DeviceAddress* device) {
+    return deviceAddressFromHalImpl(halDeviceType, halDeviceAddress, device);
+}
+#endif
+
 }  // namespace implementation
 }  // namespace CPP_VERSION
 }  // namespace common
diff --git a/audio/common/all-versions/default/HidlUtils.h b/audio/common/all-versions/default/HidlUtils.h
index 4e609ca..c420a2f 100644
--- a/audio/common/all-versions/default/HidlUtils.h
+++ b/audio/common/all-versions/default/HidlUtils.h
@@ -23,8 +23,6 @@
 
 #include <system/audio.h>
 
-using ::android::hardware::hidl_vec;
-
 namespace android {
 namespace hardware {
 namespace audio {
@@ -32,25 +30,25 @@
 namespace CPP_VERSION {
 namespace implementation {
 
+using ::android::hardware::hidl_vec;
 using namespace ::android::hardware::audio::common::CPP_VERSION;
 
 struct HidlUtils {
-#if MAJOR_VERSION < 7
-    static status_t audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config);
-    static void audioGainConfigFromHal(const struct audio_gain_config& halConfig,
-                                       AudioGainConfig* config);
-    static void audioGainFromHal(const struct audio_gain& halGain, AudioGain* gain);
-#else
     static status_t audioConfigFromHal(const audio_config_t& halConfig, bool isInput,
                                        AudioConfig* config);
+    static status_t audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig);
+#if MAJOR_VERSION >= 4
+    static status_t audioContentTypeFromHal(const audio_content_type_t halContentType,
+                                            AudioContentType* contentType);
+    static status_t audioContentTypeToHal(const AudioContentType& contentType,
+                                          audio_content_type_t* halContentType);
+#endif
     static status_t audioGainConfigFromHal(const struct audio_gain_config& halConfig, bool isInput,
                                            AudioGainConfig* config);
-    static status_t audioGainFromHal(const struct audio_gain& halGain, bool isInput,
-                                     AudioGain* gain);
-#endif
-    static status_t audioConfigToHal(const AudioConfig& config, audio_config_t* halConfig);
     static status_t audioGainConfigToHal(const AudioGainConfig& config,
                                          struct audio_gain_config* halConfig);
+    static status_t audioGainFromHal(const struct audio_gain& halGain, bool isInput,
+                                     AudioGain* gain);
     static status_t audioGainToHal(const AudioGain& gain, struct audio_gain* halGain);
     static status_t audioUsageFromHal(audio_usage_t halUsage, AudioUsage* usage);
     static status_t audioUsageToHal(const AudioUsage& usage, audio_usage_t* halUsage);
@@ -64,43 +62,37 @@
                                          struct audio_port_config* halConfig);
     static status_t audioPortConfigsFromHal(unsigned int numHalConfigs,
                                             const struct audio_port_config* halConfigs,
-                                            hidl_vec<AudioPortConfig>* configs) {
-        status_t result = NO_ERROR;
-        configs->resize(numHalConfigs);
-        for (unsigned int i = 0; i < numHalConfigs; ++i) {
-            if (status_t status = audioPortConfigFromHal(halConfigs[i], &(*configs)[i]);
-                status != NO_ERROR) {
-                result = status;
-            }
-        }
-        return result;
-    }
+                                            hidl_vec<AudioPortConfig>* configs);
     static status_t audioPortConfigsToHal(const hidl_vec<AudioPortConfig>& configs,
-                                          std::unique_ptr<audio_port_config[]>* halConfigs) {
-        status_t result = NO_ERROR;
-        halConfigs->reset(new audio_port_config[configs.size()]);
-        for (size_t i = 0; i < configs.size(); ++i) {
-            if (status_t status = audioPortConfigToHal(configs[i], &(*halConfigs)[i]);
-                status != NO_ERROR) {
-                result = status;
-            }
-        }
-        return result;
-    }
+                                          std::unique_ptr<audio_port_config[]>* halConfigs);
+    static status_t audioPortFromHal(const struct audio_port& halPort, AudioPort* port);
+    static status_t audioPortToHal(const AudioPort& port, struct audio_port* halPort);
+    static status_t audioSourceFromHal(audio_source_t halSource, AudioSource* source);
+    static status_t audioSourceToHal(const AudioSource& source, audio_source_t* halSource);
+#if MAJOR_VERSION >= 5
+    static status_t deviceAddressToHal(const DeviceAddress& device, audio_devices_t* halDeviceType,
+                                       char* halDeviceAddress);
+    static status_t deviceAddressFromHal(audio_devices_t halDeviceType,
+                                         const char* halDeviceAddress, DeviceAddress* device);
+#endif
 
-    // PLEASE DO NOT USE, will be removed in a couple of days
+#if MAJOR_VERSION <= 6
+    // Temporary versions for compatibility with forks of the default implementation.
+    // Will be removed, do not use!
+    static status_t audioConfigFromHal(const audio_config_t& halConfig, AudioConfig* config) {
+        return audioConfigFromHal(halConfig, false /*isInput--ignored*/, config);
+    }
     static std::unique_ptr<audio_port_config[]> audioPortConfigsToHal(
             const hidl_vec<AudioPortConfig>& configs) {
         std::unique_ptr<audio_port_config[]> halConfigs;
         (void)audioPortConfigsToHal(configs, &halConfigs);
         return halConfigs;
     }
-
-    static status_t audioPortFromHal(const struct audio_port& halPort, AudioPort* port);
-    static status_t audioPortToHal(const AudioPort& port, struct audio_port* halPort);
-#if MAJOR_VERSION >= 7
+#else  // V7 and above
     static status_t audioChannelMaskFromHal(audio_channel_mask_t halChannelMask, bool isInput,
                                             AudioChannelMask* channelMask);
+    static status_t audioChannelMasksFromHal(const std::vector<std::string>& halChannelMasks,
+                                             hidl_vec<AudioChannelMask>* channelMasks);
     static status_t audioChannelMaskToHal(const AudioChannelMask& channelMask,
                                           audio_channel_mask_t* halChannelMask);
     static status_t audioConfigBaseFromHal(const audio_config_base_t& halConfigBase, bool isInput,
@@ -110,6 +102,8 @@
     static status_t audioDeviceTypeFromHal(audio_devices_t halDevice, AudioDevice* device);
     static status_t audioDeviceTypeToHal(const AudioDevice& device, audio_devices_t* halDevice);
     static status_t audioFormatFromHal(audio_format_t halFormat, AudioFormat* format);
+    static status_t audioFormatsFromHal(const std::vector<std::string>& halFormats,
+                                        hidl_vec<AudioFormat>* formats);
     static status_t audioFormatToHal(const AudioFormat& format, audio_format_t* halFormat);
     static status_t audioGainModeMaskFromHal(audio_gain_mode_t halGainModeMask,
                                              hidl_vec<AudioGainMode>* gainModeMask);
@@ -121,16 +115,10 @@
                                         AudioProfile* profile);
     static status_t audioProfileToHal(const AudioProfile& profile,
                                       struct audio_profile* halProfile);
-    static status_t audioSourceFromHal(audio_source_t halSource, AudioSource* source);
-    static status_t audioSourceToHal(const AudioSource& source, audio_source_t* halSource);
     static status_t audioStreamTypeFromHal(audio_stream_type_t halStreamType,
                                            AudioStreamType* streamType);
     static status_t audioStreamTypeToHal(const AudioStreamType& streamType,
                                          audio_stream_type_t* halStreamType);
-    static status_t deviceAddressToHal(const DeviceAddress& device, audio_devices_t* halDeviceType,
-                                       char* halDeviceAddress);
-    static status_t deviceAddressFromHal(audio_devices_t halDeviceType,
-                                         const char* halDeviceAddress, DeviceAddress* device);
 
   private:
     static status_t audioIndexChannelMaskFromHal(audio_channel_mask_t halChannelMask,
@@ -151,8 +139,113 @@
                                                struct audio_port_config_mix_ext* mix,
                                                struct audio_port_config_session_ext* session);
 #endif
+
+    // V4 and below have DeviceAddress defined in the 'core' interface.
+    // To avoid duplicating code, the implementations of deviceAddressTo/FromHal
+    // are defined as templates. These templates can be only used directly by V4
+    // and below.
+#if MAJOR_VERSION >= 5
+  private:
+#endif
+    template <typename DA>
+    static status_t deviceAddressToHalImpl(const DA& device, audio_devices_t* halDeviceType,
+                                           char* halDeviceAddress);
+    template <typename DA>
+    static status_t deviceAddressFromHalImpl(audio_devices_t halDeviceType,
+                                             const char* halDeviceAddress, DA* device);
 };
 
+#if MAJOR_VERSION <= 6
+#if MAJOR_VERSION >= 4
+inline status_t HidlUtils::audioContentTypeFromHal(const audio_content_type_t halContentType,
+                                                   AudioContentType* contentType) {
+    *contentType = AudioContentType(halContentType);
+    return NO_ERROR;
+}
+
+inline status_t HidlUtils::audioContentTypeToHal(const AudioContentType& contentType,
+                                                 audio_content_type_t* halContentType) {
+    *halContentType = static_cast<audio_content_type_t>(contentType);
+    return NO_ERROR;
+}
+#endif
+
+inline status_t HidlUtils::audioSourceFromHal(audio_source_t halSource, AudioSource* source) {
+    *source = AudioSource(halSource);
+    return NO_ERROR;
+}
+
+inline status_t HidlUtils::audioSourceToHal(const AudioSource& source, audio_source_t* halSource) {
+    *halSource = static_cast<audio_source_t>(source);
+    return NO_ERROR;
+}
+
+template <typename DA>
+status_t HidlUtils::deviceAddressToHalImpl(const DA& device, audio_devices_t* halDeviceType,
+                                           char* halDeviceAddress) {
+    *halDeviceType = static_cast<audio_devices_t>(device.device);
+    memset(halDeviceAddress, 0, AUDIO_DEVICE_MAX_ADDRESS_LEN);
+    if (audio_is_a2dp_out_device(*halDeviceType) || audio_is_a2dp_in_device(*halDeviceType)) {
+        snprintf(halDeviceAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN, "%02X:%02X:%02X:%02X:%02X:%02X",
+                 device.address.mac[0], device.address.mac[1], device.address.mac[2],
+                 device.address.mac[3], device.address.mac[4], device.address.mac[5]);
+    } else if (*halDeviceType == AUDIO_DEVICE_OUT_IP || *halDeviceType == AUDIO_DEVICE_IN_IP) {
+        snprintf(halDeviceAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN, "%d.%d.%d.%d",
+                 device.address.ipv4[0], device.address.ipv4[1], device.address.ipv4[2],
+                 device.address.ipv4[3]);
+    } else if (audio_is_usb_out_device(*halDeviceType) || audio_is_usb_in_device(*halDeviceType)) {
+        snprintf(halDeviceAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN, "card=%d;device=%d",
+                 device.address.alsa.card, device.address.alsa.device);
+    } else if (*halDeviceType == AUDIO_DEVICE_OUT_BUS || *halDeviceType == AUDIO_DEVICE_IN_BUS) {
+        snprintf(halDeviceAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN, "%s", device.busAddress.c_str());
+    } else if (*halDeviceType == AUDIO_DEVICE_OUT_REMOTE_SUBMIX ||
+               *halDeviceType == AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
+        snprintf(halDeviceAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN, "%s",
+                 device.rSubmixAddress.c_str());
+    }
+    return NO_ERROR;
+}
+
+template <typename DA>
+status_t HidlUtils::deviceAddressFromHalImpl(audio_devices_t halDeviceType,
+                                             const char* halDeviceAddress, DA* device) {
+    if (device == nullptr) {
+        return BAD_VALUE;
+    }
+    device->device = AudioDevice(halDeviceType);
+    if (halDeviceAddress == nullptr ||
+        strnlen(halDeviceAddress, AUDIO_DEVICE_MAX_ADDRESS_LEN) == 0) {
+        return NO_ERROR;
+    }
+
+    if (audio_is_a2dp_out_device(halDeviceType) || audio_is_a2dp_in_device(halDeviceType)) {
+        int status =
+                sscanf(halDeviceAddress, "%hhX:%hhX:%hhX:%hhX:%hhX:%hhX", &device->address.mac[0],
+                       &device->address.mac[1], &device->address.mac[2], &device->address.mac[3],
+                       &device->address.mac[4], &device->address.mac[5]);
+        return status == 6 ? OK : BAD_VALUE;
+    } else if (halDeviceType == AUDIO_DEVICE_OUT_IP || halDeviceType == AUDIO_DEVICE_IN_IP) {
+        int status = sscanf(halDeviceAddress, "%hhu.%hhu.%hhu.%hhu", &device->address.ipv4[0],
+                            &device->address.ipv4[1], &device->address.ipv4[2],
+                            &device->address.ipv4[3]);
+        return status == 4 ? OK : BAD_VALUE;
+    } else if (audio_is_usb_out_device(halDeviceType) || audio_is_usb_in_device(halDeviceType)) {
+        int status = sscanf(halDeviceAddress, "card=%d;device=%d", &device->address.alsa.card,
+                            &device->address.alsa.device);
+        return status == 2 ? OK : BAD_VALUE;
+    } else if (halDeviceType == AUDIO_DEVICE_OUT_BUS || halDeviceType == AUDIO_DEVICE_IN_BUS) {
+        device->busAddress = halDeviceAddress;
+        return OK;
+    } else if (halDeviceType == AUDIO_DEVICE_OUT_REMOTE_SUBMIX ||
+               halDeviceType == AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
+        device->rSubmixAddress = halDeviceAddress;
+        return OK;
+    }
+    device->busAddress = halDeviceAddress;
+    return NO_ERROR;
+}
+#endif  // MAJOR_VERSION <= 6
+
 }  // namespace implementation
 }  // namespace CPP_VERSION
 }  // namespace common
diff --git a/audio/common/all-versions/default/HidlUtilsCommon.cpp b/audio/common/all-versions/default/HidlUtilsCommon.cpp
new file mode 100644
index 0000000..d2da193
--- /dev/null
+++ b/audio/common/all-versions/default/HidlUtilsCommon.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2020 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 "HidlUtils.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace common {
+namespace CPP_VERSION {
+namespace implementation {
+
+status_t HidlUtils::audioPortConfigsFromHal(unsigned int numHalConfigs,
+                                            const struct audio_port_config* halConfigs,
+                                            hidl_vec<AudioPortConfig>* configs) {
+    status_t result = NO_ERROR;
+    configs->resize(numHalConfigs);
+    for (unsigned int i = 0; i < numHalConfigs; ++i) {
+        if (status_t status = audioPortConfigFromHal(halConfigs[i], &(*configs)[i]);
+            status != NO_ERROR) {
+            result = status;
+        }
+    }
+    return result;
+}
+
+status_t HidlUtils::audioPortConfigsToHal(const hidl_vec<AudioPortConfig>& configs,
+                                          std::unique_ptr<audio_port_config[]>* halConfigs) {
+    status_t result = NO_ERROR;
+    halConfigs->reset(new audio_port_config[configs.size()]);
+    for (size_t i = 0; i < configs.size(); ++i) {
+        if (status_t status = audioPortConfigToHal(configs[i], &(*halConfigs)[i]);
+            status != NO_ERROR) {
+            result = status;
+        }
+    }
+    return result;
+}
+
+}  // namespace implementation
+}  // namespace CPP_VERSION
+}  // namespace common
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
diff --git a/audio/common/all-versions/default/tests/hidlutils_tests.cpp b/audio/common/all-versions/default/tests/hidlutils_tests.cpp
index bfc99e6..22571c0 100644
--- a/audio/common/all-versions/default/tests/hidlutils_tests.cpp
+++ b/audio/common/all-versions/default/tests/hidlutils_tests.cpp
@@ -28,6 +28,7 @@
 #include <xsdc/XsdcSupport.h>
 
 using namespace android;
+using ::android::hardware::hidl_vec;
 using namespace ::android::hardware::audio::common::CPP_VERSION;
 using ::android::hardware::audio::common::CPP_VERSION::implementation::HidlUtils;
 namespace xsd {
@@ -36,6 +37,8 @@
 
 static constexpr audio_channel_mask_t kInvalidHalChannelMask =
         static_cast<audio_channel_mask_t>(0xFFFFFFFFU);
+static constexpr audio_content_type_t kInvalidHalContentType =
+        static_cast<audio_content_type_t>(0xFFFFFFFFU);
 static constexpr audio_devices_t kInvalidHalDevice = static_cast<audio_devices_t>(0xFFFFFFFFU);
 static constexpr audio_format_t kInvalidHalFormat = static_cast<audio_format_t>(0xFFFFFFFFU);
 static constexpr audio_gain_mode_t kInvalidHalGainMode =
@@ -117,6 +120,34 @@
     }
 }
 
+TEST(HidlUtils, ConvertInvalidChannelMasksFromHal) {
+    std::vector<std::string> validAndInvalidChannelMasks = {
+            toString(xsd::AudioChannelMask::AUDIO_CHANNEL_OUT_STEREO), "random string", ""};
+    hidl_vec<AudioChannelMask> validChannelMask;
+    EXPECT_EQ(BAD_VALUE,
+              HidlUtils::audioChannelMasksFromHal(validAndInvalidChannelMasks, &validChannelMask));
+    EXPECT_EQ(1, validChannelMask.size());
+    EXPECT_EQ(validAndInvalidChannelMasks[0], validChannelMask[0]);
+
+    std::vector<std::string> invalidChannelMasks = {"random string", ""};
+    hidl_vec<AudioChannelMask> empty;
+    EXPECT_EQ(BAD_VALUE, HidlUtils::audioChannelMasksFromHal(invalidChannelMasks, &empty));
+    EXPECT_EQ(0, empty.size());
+}
+
+TEST(HidlUtils, ConvertChannelMasksFromHal) {
+    std::vector<std::string> allHalChannelMasks;
+    for (const auto enumVal : xsdc_enum_range<xsd::AudioChannelMask>{}) {
+        allHalChannelMasks.push_back(toString(enumVal));
+    }
+    hidl_vec<AudioChannelMask> allChannelMasks;
+    EXPECT_EQ(NO_ERROR, HidlUtils::audioChannelMasksFromHal(allHalChannelMasks, &allChannelMasks));
+    EXPECT_EQ(allHalChannelMasks.size(), allChannelMasks.size());
+    for (size_t i = 0; i < allHalChannelMasks.size(); ++i) {
+        EXPECT_EQ(allHalChannelMasks[i], allChannelMasks[i]);
+    }
+}
+
 TEST(HidlUtils, ConvertInvalidConfigBase) {
     AudioConfigBase invalid;
     EXPECT_EQ(BAD_VALUE, HidlUtils::audioConfigBaseFromHal({.sample_rate = 0,
@@ -147,6 +178,26 @@
     EXPECT_EQ(configBase, configBaseBack);
 }
 
+TEST(HidlUtils, ConvertInvalidContentType) {
+    AudioContentType invalid;
+    EXPECT_EQ(BAD_VALUE, HidlUtils::audioContentTypeFromHal(kInvalidHalContentType, &invalid));
+    audio_content_type_t halInvalid;
+    EXPECT_EQ(BAD_VALUE, HidlUtils::audioContentTypeToHal("random string", &halInvalid));
+}
+
+TEST(HidlUtils, ConvertContentType) {
+    for (const auto enumVal : xsdc_enum_range<xsd::AudioContentType>{}) {
+        const AudioContentType contentType = toString(enumVal);
+        audio_content_type_t halContentType;
+        AudioContentType contentTypeBack;
+        EXPECT_EQ(NO_ERROR, HidlUtils::audioContentTypeToHal(contentType, &halContentType))
+                << "Conversion of \"" << contentType << "\" failed";
+        EXPECT_EQ(NO_ERROR, HidlUtils::audioContentTypeFromHal(halContentType, &contentTypeBack))
+                << "Conversion of content type " << halContentType << " failed";
+        EXPECT_EQ(contentType, contentTypeBack);
+    }
+}
+
 TEST(HidlUtils, ConvertInvalidDeviceType) {
     AudioDevice invalid;
     EXPECT_EQ(BAD_VALUE, HidlUtils::audioDeviceTypeFromHal(kInvalidHalDevice, &invalid));
@@ -314,6 +365,33 @@
     }
 }
 
+TEST(HidlUtils, ConvertInvalidFormatsFromHal) {
+    std::vector<std::string> validAndInvalidFormats = {
+            toString(xsd::AudioFormat::AUDIO_FORMAT_PCM_16_BIT), "random string", ""};
+    hidl_vec<AudioFormat> validFormat;
+    EXPECT_EQ(BAD_VALUE, HidlUtils::audioFormatsFromHal(validAndInvalidFormats, &validFormat));
+    EXPECT_EQ(1, validFormat.size());
+    EXPECT_EQ(validAndInvalidFormats[0], validFormat[0]);
+
+    std::vector<std::string> invalidFormats = {"random string", ""};
+    hidl_vec<AudioFormat> empty;
+    EXPECT_EQ(BAD_VALUE, HidlUtils::audioFormatsFromHal(invalidFormats, &empty));
+    EXPECT_EQ(0, empty.size());
+}
+
+TEST(HidlUtils, ConvertFormatsFromHal) {
+    std::vector<std::string> allHalFormats;
+    for (const auto enumVal : xsdc_enum_range<xsd::AudioFormat>{}) {
+        allHalFormats.push_back(toString(enumVal));
+    }
+    hidl_vec<AudioFormat> allFormats;
+    EXPECT_EQ(NO_ERROR, HidlUtils::audioFormatsFromHal(allHalFormats, &allFormats));
+    EXPECT_EQ(allHalFormats.size(), allFormats.size());
+    for (size_t i = 0; i < allHalFormats.size(); ++i) {
+        EXPECT_EQ(allHalFormats[i], allFormats[i]);
+    }
+}
+
 TEST(HidlUtils, ConvertInvalidGainModeMask) {
     hidl_vec<AudioGainMode> invalid;
     EXPECT_EQ(BAD_VALUE, HidlUtils::audioGainModeMaskFromHal(kInvalidHalGainMode, &invalid));