Prepare openOutput() signature to AIDL conversion

The purpose is to avoid having more than one primitive output
argument and to avoid in/out arguments.
Test: Audio-related CTS tests from CtsMediaTestCases

Change-Id: I827f99755f85bd58f3088c9445add52848763fa0
diff --git a/media/libaudiofoundation/AudioGain.cpp b/media/libaudiofoundation/AudioGain.cpp
index 759140e..c59e966 100644
--- a/media/libaudiofoundation/AudioGain.cpp
+++ b/media/libaudiofoundation/AudioGain.cpp
@@ -129,42 +129,49 @@
            mGain.max_ramp_ms == other->mGain.max_ramp_ms;
 }
 
-status_t AudioGain::writeToParcel(android::Parcel *parcel) const
-{
-    status_t status = NO_ERROR;
-    if ((status = parcel->writeInt32(mIndex)) != NO_ERROR) return status;
-    if ((status = parcel->writeBool(mUseInChannelMask)) != NO_ERROR) return status;
-    if ((status = parcel->writeBool(mUseForVolume)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mGain.mode)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mGain.channel_mask)) != NO_ERROR) return status;
-    if ((status = parcel->writeInt32(mGain.min_value)) != NO_ERROR) return status;
-    if ((status = parcel->writeInt32(mGain.max_value)) != NO_ERROR) return status;
-    if ((status = parcel->writeInt32(mGain.default_value)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mGain.step_value)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mGain.min_ramp_ms)) != NO_ERROR) return status;
-    status = parcel->writeUint32(mGain.max_ramp_ms);
-    return status;
+status_t AudioGain::writeToParcel(android::Parcel *parcel) const {
+    media::AudioGain parcelable;
+    return writeToParcelable(&parcelable)
+        ?: parcelable.writeToParcel(parcel);
 }
 
-status_t AudioGain::readFromParcel(const android::Parcel *parcel)
-{
-    status_t status = NO_ERROR;
-    if ((status = parcel->readInt32(&mIndex)) != NO_ERROR) return status;
-    if ((status = parcel->readBool(&mUseInChannelMask)) != NO_ERROR) return status;
-    if ((status = parcel->readBool(&mUseForVolume)) != NO_ERROR) return status;
-    uint32_t rawGainMode;
-    if ((status = parcel->readUint32(&rawGainMode)) != NO_ERROR) return status;
-    mGain.mode = static_cast<audio_gain_mode_t>(rawGainMode);
-    uint32_t rawChannelMask;
-    if ((status = parcel->readUint32(&rawChannelMask)) != NO_ERROR) return status;
-    mGain.channel_mask = static_cast<audio_channel_mask_t>(rawChannelMask);
-    if ((status = parcel->readInt32(&mGain.min_value)) != NO_ERROR) return status;
-    if ((status = parcel->readInt32(&mGain.max_value)) != NO_ERROR) return status;
-    if ((status = parcel->readInt32(&mGain.default_value)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mGain.step_value)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mGain.min_ramp_ms)) != NO_ERROR) return status;
-    status = parcel->readUint32(&mGain.max_ramp_ms);
-    return status;
+status_t AudioGain::writeToParcelable(media::AudioGain* parcelable) const {
+    parcelable->index = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mIndex));
+    parcelable->useInChannelMask = mUseInChannelMask;
+    parcelable->useForVolume = mUseForVolume;
+    parcelable->mode = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_gain_mode_t_int32_t(mGain.mode));
+    parcelable->channelMask = VALUE_OR_RETURN_STATUS(
+            legacy2aidl_audio_channel_mask_t_int32_t(mGain.channel_mask));
+    parcelable->minValue = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.min_value));
+    parcelable->maxValue = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.max_value));
+    parcelable->defaultValue = VALUE_OR_RETURN_STATUS(
+            convertIntegral<int32_t>(mGain.default_value));
+    parcelable->stepValue = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.step_value));
+    parcelable->minRampMs = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.min_ramp_ms));
+    parcelable->maxRampMs = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.max_ramp_ms));
+    return OK;
+}
+
+status_t AudioGain::readFromParcel(const android::Parcel *parcel) {
+    media::AudioGain parcelable;
+    return parcelable.readFromParcel(parcel)
+        ?: readFromParcelable(parcelable);
+}
+
+status_t AudioGain::readFromParcelable(const media::AudioGain& parcelable) {
+    mIndex = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.index));
+    mUseInChannelMask = parcelable.useInChannelMask;
+    mUseForVolume = parcelable.useForVolume;
+    mGain.mode = VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_audio_gain_mode_t(parcelable.mode));
+    mGain.channel_mask = VALUE_OR_RETURN_STATUS(
+            aidl2legacy_int32_t_audio_channel_mask_t(parcelable.channelMask));
+    mGain.min_value = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.minValue));
+    mGain.max_value = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.maxValue));
+    mGain.default_value = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.defaultValue));
+    mGain.step_value = VALUE_OR_RETURN_STATUS(convertIntegral<unsigned int>(parcelable.stepValue));
+    mGain.min_ramp_ms = VALUE_OR_RETURN_STATUS(convertIntegral<unsigned int>(parcelable.minRampMs));
+    mGain.max_ramp_ms = VALUE_OR_RETURN_STATUS(convertIntegral<unsigned int>(parcelable.maxRampMs));
+    return OK;
 }
 
 bool AudioGains::equals(const AudioGains &other) const
@@ -200,4 +207,34 @@
     return status;
 }
 
+ConversionResult<sp<AudioGain>>
+aidl2legacy_AudioGain(const media::AudioGain& aidl) {
+    sp<AudioGain> legacy = new AudioGain(0, false);
+    status_t status = legacy->readFromParcelable(aidl);
+    if (status != OK) {
+        return base::unexpected(status);
+    }
+    return legacy;
+}
+
+ConversionResult<media::AudioGain>
+legacy2aidl_AudioGain(const sp<AudioGain>& legacy) {
+    media::AudioGain aidl;
+    status_t status = legacy->writeToParcelable(&aidl);
+    if (status != OK) {
+        return base::unexpected(status);
+    }
+    return aidl;
+}
+
+ConversionResult<AudioGains>
+aidl2legacy_AudioGains(const std::vector<media::AudioGain>& aidl) {
+    return convertContainer<AudioGains>(aidl, aidl2legacy_AudioGain);
+}
+
+ConversionResult<std::vector<media::AudioGain>>
+legacy2aidl_AudioGains(const AudioGains& legacy) {
+    return convertContainer<std::vector<media::AudioGain>>(legacy, legacy2aidl_AudioGain);
+}
+
 } // namespace android
diff --git a/media/libaudiofoundation/AudioPort.cpp b/media/libaudiofoundation/AudioPort.cpp
index d650c67..559c711 100644
--- a/media/libaudiofoundation/AudioPort.cpp
+++ b/media/libaudiofoundation/AudioPort.cpp
@@ -150,32 +150,33 @@
 
 status_t AudioPort::writeToParcel(Parcel *parcel) const
 {
-    status_t status = NO_ERROR;
-    if ((status = parcel->writeUtf8AsUtf16(mName)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mType)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mRole)) != NO_ERROR) return status;
-    if ((status = parcel->writeParcelable(mProfiles)) != NO_ERROR) return status;
-    if ((status = parcel->writeParcelable(mGains)) != NO_ERROR) return status;
-    return status;
+    media::AudioPort parcelable;
+    return writeToParcelable(&parcelable)
+        ?: parcelable.writeToParcel(parcel);
 }
 
-status_t AudioPort::readFromParcel(const Parcel *parcel)
-{
-    status_t status = NO_ERROR;
-    if ((status = parcel->readUtf8FromUtf16(&mName)) != NO_ERROR) return status;
-    static_assert(sizeof(mType) == sizeof(uint32_t));
-    if ((status = parcel->readUint32(reinterpret_cast<uint32_t*>(&mType))) != NO_ERROR) {
-        return status;
-    }
-    static_assert(sizeof(mRole) == sizeof(uint32_t));
-    if ((status = parcel->readUint32(reinterpret_cast<uint32_t*>(&mRole))) != NO_ERROR) {
-        return status;
-    }
-    mProfiles.clear();
-    if ((status = parcel->readParcelable(&mProfiles)) != NO_ERROR) return status;
-    mGains.clear();
-    if ((status = parcel->readParcelable(&mGains)) != NO_ERROR) return status;
-    return status;
+status_t AudioPort::writeToParcelable(media::AudioPort* parcelable) const {
+    parcelable->name = mName;
+    parcelable->type = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_type_t_AudioPortType(mType));
+    parcelable->role = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_role_t_AudioPortRole(mRole));
+    parcelable->profiles = VALUE_OR_RETURN_STATUS(legacy2aidl_AudioProfileVector(mProfiles));
+    parcelable->gains = VALUE_OR_RETURN_STATUS(legacy2aidl_AudioGains(mGains));
+    return OK;
+}
+
+status_t AudioPort::readFromParcel(const Parcel *parcel) {
+    media::AudioPort parcelable;
+    return parcelable.readFromParcel(parcel)
+        ?: readFromParcelable(parcelable);
+}
+
+status_t AudioPort::readFromParcelable(const media::AudioPort& parcelable) {
+    mName = parcelable.name;
+    mType = VALUE_OR_RETURN_STATUS(aidl2legacy_AudioPortType_audio_port_type_t(parcelable.type));
+    mRole = VALUE_OR_RETURN_STATUS(aidl2legacy_AudioPortRole_audio_port_role_t(parcelable.role));
+    mProfiles = VALUE_OR_RETURN_STATUS(aidl2legacy_AudioProfileVector(parcelable.profiles));
+    mGains = VALUE_OR_RETURN_STATUS(aidl2legacy_AudioGains(parcelable.gains));
+    return OK;
 }
 
 // --- AudioPortConfig class implementation
@@ -276,50 +277,56 @@
            mGain.ramp_duration_ms == other->mGain.ramp_duration_ms;
 }
 
-status_t AudioPortConfig::writeToParcel(Parcel *parcel) const
-{
-    status_t status = NO_ERROR;
-    if ((status = parcel->writeUint32(mSamplingRate)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mFormat)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mChannelMask)) != NO_ERROR) return status;
-    if ((status = parcel->writeInt32(mId)) != NO_ERROR) return status;
-    // Write mGain to parcel.
-    if ((status = parcel->writeInt32(mGain.index)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mGain.mode)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mGain.channel_mask)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mGain.ramp_duration_ms)) != NO_ERROR) return status;
-    std::vector<int> values(std::begin(mGain.values), std::end(mGain.values));
-    if ((status = parcel->writeInt32Vector(values)) != NO_ERROR) return status;
-    return status;
+status_t AudioPortConfig::writeToParcel(Parcel *parcel) const {
+    media::AudioPortConfig parcelable;
+    return writeToParcelable(&parcelable)
+        ?: parcelable.writeToParcel(parcel);
 }
 
-status_t AudioPortConfig::readFromParcel(const Parcel *parcel)
-{
-    status_t status = NO_ERROR;
-    if ((status = parcel->readUint32(&mSamplingRate)) != NO_ERROR) return status;
-    static_assert(sizeof(mFormat) == sizeof(uint32_t));
-    if ((status = parcel->readUint32(reinterpret_cast<uint32_t*>(&mFormat))) != NO_ERROR) {
-        return status;
-    }
-    uint32_t rawChannelMask;
-    if ((status = parcel->readUint32(&rawChannelMask)) != NO_ERROR) return status;
-    mChannelMask = static_cast<audio_channel_mask_t>(rawChannelMask);
-    if ((status = parcel->readInt32(&mId)) != NO_ERROR) return status;
-    // Read mGain from parcel.
-    if ((status = parcel->readInt32(&mGain.index)) != NO_ERROR) return status;
-    uint32_t rawGainMode;
-    if ((status = parcel->readUint32(&rawGainMode)) != NO_ERROR) return status;
-    mGain.mode = static_cast<audio_gain_mode_t>(rawGainMode);
-    if ((status = parcel->readUint32(&rawChannelMask)) != NO_ERROR) return status;
-    mGain.channel_mask = static_cast<audio_channel_mask_t>(rawChannelMask);
-    if ((status = parcel->readUint32(&mGain.ramp_duration_ms)) != NO_ERROR) return status;
-    std::vector<int> values;
-    if ((status = parcel->readInt32Vector(&values)) != NO_ERROR) return status;
-    if (values.size() != std::size(mGain.values)) {
+status_t AudioPortConfig::writeToParcelable(media::AudioPortConfig* parcelable) const {
+    parcelable->sampleRate = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mSamplingRate));
+    parcelable->format = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_format_t_AudioFormat(mFormat));
+    parcelable->channelMask = VALUE_OR_RETURN_STATUS(
+            legacy2aidl_audio_channel_mask_t_int32_t(mChannelMask));
+    parcelable->id = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_port_handle_t_int32_t(mId));
+    parcelable->gain.index = VALUE_OR_RETURN_STATUS(convertIntegral<int32_t>(mGain.index));
+    parcelable->gain.mode = VALUE_OR_RETURN_STATUS(
+            legacy2aidl_audio_gain_mode_t_int32_t(mGain.mode));
+    parcelable->gain.channelMask = VALUE_OR_RETURN_STATUS(
+            legacy2aidl_audio_channel_mask_t_int32_t(mGain.channel_mask));
+    parcelable->gain.rampDurationMs = VALUE_OR_RETURN_STATUS(
+            convertIntegral<int32_t>(mGain.ramp_duration_ms));
+    parcelable->gain.values = VALUE_OR_RETURN_STATUS(convertContainer<std::vector<int32_t>>(
+            mGain.values, convertIntegral<int32_t, int>));
+    return OK;
+}
+
+status_t AudioPortConfig::readFromParcel(const Parcel *parcel) {
+    media::AudioPortConfig parcelable;
+    return parcelable.readFromParcel(parcel)
+        ?: readFromParcelable(parcelable);
+}
+
+status_t AudioPortConfig::readFromParcelable(const media::AudioPortConfig& parcelable) {
+    mSamplingRate = VALUE_OR_RETURN_STATUS(convertIntegral<unsigned int>(parcelable.sampleRate));
+    mFormat = VALUE_OR_RETURN_STATUS(aidl2legacy_AudioFormat_audio_format_t(parcelable.format));
+    mChannelMask = VALUE_OR_RETURN_STATUS(
+            aidl2legacy_int32_t_audio_channel_mask_t(parcelable.channelMask));
+    mId = VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_audio_port_handle_t(parcelable.id));
+    mGain.index = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.gain.index));
+    mGain.mode = VALUE_OR_RETURN_STATUS(
+            aidl2legacy_int32_t_audio_gain_mode_t(parcelable.gain.mode));
+    mGain.channel_mask = VALUE_OR_RETURN_STATUS(
+            aidl2legacy_int32_t_audio_channel_mask_t(parcelable.gain.channelMask));
+    mGain.ramp_duration_ms = VALUE_OR_RETURN_STATUS(
+            convertIntegral<unsigned int>(parcelable.gain.rampDurationMs));
+    if (parcelable.gain.values.size() > std::size(mGain.values)) {
         return BAD_VALUE;
     }
-    std::copy(values.begin(), values.end(), mGain.values);
-    return status;
+    for (size_t i = 0; i < parcelable.gain.values.size(); ++i) {
+        mGain.values[i] = VALUE_OR_RETURN_STATUS(convertIntegral<int>(parcelable.gain.values[i]));
+    }
+    return OK;
 }
 
 } // namespace android
diff --git a/media/libaudiofoundation/AudioProfile.cpp b/media/libaudiofoundation/AudioProfile.cpp
index ec52575..3b47fed 100644
--- a/media/libaudiofoundation/AudioProfile.cpp
+++ b/media/libaudiofoundation/AudioProfile.cpp
@@ -130,44 +130,73 @@
            mIsDynamicRate == other->isDynamicRate();
 }
 
-status_t AudioProfile::writeToParcel(Parcel *parcel) const
-{
-    status_t status = NO_ERROR;
-    if ((status = parcel->writeUtf8AsUtf16(mName)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mFormat)) != NO_ERROR) return status;
-    std::vector<int> values(mChannelMasks.begin(), mChannelMasks.end());
-    if ((status = parcel->writeInt32Vector(values)) != NO_ERROR) return status;
-    values.clear();
-    values.assign(mSamplingRates.begin(), mSamplingRates.end());
-    if ((status = parcel->writeInt32Vector(values)) != NO_ERROR) return status;
-    if ((status = parcel->writeBool(mIsDynamicFormat)) != NO_ERROR) return status;
-    if ((status = parcel->writeBool(mIsDynamicChannels)) != NO_ERROR) return status;
-    if ((status = parcel->writeBool(mIsDynamicRate)) != NO_ERROR) return status;
-    return status;
+AudioProfile& AudioProfile::operator=(const AudioProfile& other) {
+    mName = other.mName;
+    mFormat = other.mFormat;
+    mChannelMasks = other.mChannelMasks;
+    mSamplingRates = other.mSamplingRates;
+    mIsDynamicFormat = other.mIsDynamicFormat;
+    mIsDynamicChannels = other.mIsDynamicChannels;
+    mIsDynamicRate = other.mIsDynamicRate;
+    return *this;
 }
 
-status_t AudioProfile::readFromParcel(const Parcel *parcel)
-{
-    status_t status = NO_ERROR;
-    if ((status = parcel->readUtf8FromUtf16(&mName)) != NO_ERROR) return status;
-    static_assert(sizeof(mFormat) == sizeof(uint32_t));
-    if ((status = parcel->readUint32(reinterpret_cast<uint32_t*>(&mFormat))) != NO_ERROR) {
+status_t AudioProfile::writeToParcel(Parcel *parcel) const {
+    media::AudioProfile parcelable = VALUE_OR_RETURN_STATUS(toParcelable());
+    return parcelable.writeToParcel(parcel);
+ }
+
+ConversionResult<media::AudioProfile>
+AudioProfile::toParcelable() const {
+    media::AudioProfile parcelable;
+    parcelable.name = mName;
+    parcelable.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(mFormat));
+    parcelable.channelMasks = VALUE_OR_RETURN(
+            convertContainer<std::vector<int32_t>>(mChannelMasks,
+                                                   legacy2aidl_audio_channel_mask_t_int32_t));
+    parcelable.samplingRates = VALUE_OR_RETURN(
+            convertContainer<std::vector<int32_t>>(mSamplingRates,
+                                                   convertIntegral<int32_t, uint32_t>));
+    parcelable.isDynamicFormat = mIsDynamicFormat;
+    parcelable.isDynamicChannels = mIsDynamicChannels;
+    parcelable.isDynamicRate = mIsDynamicRate;
+    return parcelable;
+}
+
+status_t AudioProfile::readFromParcel(const Parcel *parcel) {
+    media::AudioProfile parcelable;
+    if (status_t status = parcelable.readFromParcel(parcel); status != OK) {
         return status;
     }
-    std::vector<int> values;
-    if ((status = parcel->readInt32Vector(&values)) != NO_ERROR) return status;
-    mChannelMasks.clear();
-    for (auto raw : values) {
-        mChannelMasks.insert(static_cast<audio_channel_mask_t>(raw));
-    }
-    values.clear();
-    if ((status = parcel->readInt32Vector(&values)) != NO_ERROR) return status;
-    mSamplingRates.clear();
-    mSamplingRates.insert(values.begin(), values.end());
-    if ((status = parcel->readBool(&mIsDynamicFormat)) != NO_ERROR) return status;
-    if ((status = parcel->readBool(&mIsDynamicChannels)) != NO_ERROR) return status;
-    if ((status = parcel->readBool(&mIsDynamicRate)) != NO_ERROR) return status;
-    return status;
+    *this = *VALUE_OR_RETURN_STATUS(fromParcelable(parcelable));
+    return OK;
+}
+
+ConversionResult<sp<AudioProfile>>
+AudioProfile::fromParcelable(const media::AudioProfile& parcelable) {
+    sp<AudioProfile> legacy = new AudioProfile();
+    legacy->mName = parcelable.name;
+    legacy->mFormat = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(parcelable.format));
+    legacy->mChannelMasks = VALUE_OR_RETURN(
+            convertContainer<ChannelMaskSet>(parcelable.channelMasks,
+                                             aidl2legacy_int32_t_audio_channel_mask_t));
+    legacy->mSamplingRates = VALUE_OR_RETURN(
+            convertContainer<SampleRateSet>(parcelable.samplingRates,
+                                            convertIntegral<uint32_t, int32_t>));
+    legacy->mIsDynamicFormat = parcelable.isDynamicFormat;
+    legacy->mIsDynamicChannels = parcelable.isDynamicChannels;
+    legacy->mIsDynamicRate = parcelable.isDynamicRate;
+    return legacy;
+}
+
+ConversionResult<sp<AudioProfile>>
+aidl2legacy_AudioProfile(const media::AudioProfile& aidl) {
+    return AudioProfile::fromParcelable(aidl);
+}
+
+ConversionResult<media::AudioProfile>
+legacy2aidl_AudioProfile(const sp<AudioProfile>& legacy) {
+    return legacy->toParcelable();
 }
 
 ssize_t AudioProfileVector::add(const sp<AudioProfile> &profile)
@@ -316,4 +345,14 @@
                       });
 }
 
+ConversionResult<AudioProfileVector>
+aidl2legacy_AudioProfileVector(const std::vector<media::AudioProfile>& aidl) {
+    return convertContainer<AudioProfileVector>(aidl, aidl2legacy_AudioProfile);
+}
+
+ConversionResult<std::vector<media::AudioProfile>>
+legacy2aidl_AudioProfileVector(const AudioProfileVector& legacy) {
+    return convertContainer<std::vector<media::AudioProfile>>(legacy, legacy2aidl_AudioProfile);
+}
+
 } // namespace android
diff --git a/media/libaudiofoundation/DeviceDescriptorBase.cpp b/media/libaudiofoundation/DeviceDescriptorBase.cpp
index 50bda8b..6261559 100644
--- a/media/libaudiofoundation/DeviceDescriptorBase.cpp
+++ b/media/libaudiofoundation/DeviceDescriptorBase.cpp
@@ -19,6 +19,7 @@
 
 #include <android-base/stringprintf.h>
 #include <audio_utils/string.h>
+#include <media/AidlConversion.h>
 #include <media/DeviceDescriptorBase.h>
 #include <media/TypeConverter.h>
 
@@ -155,26 +156,45 @@
            mDeviceTypeAddr.equals(other->mDeviceTypeAddr);
 }
 
+
 status_t DeviceDescriptorBase::writeToParcel(Parcel *parcel) const
 {
-    status_t status = NO_ERROR;
-    if ((status = AudioPort::writeToParcel(parcel)) != NO_ERROR) return status;
-    if ((status = AudioPortConfig::writeToParcel(parcel)) != NO_ERROR) return status;
-    if ((status = parcel->writeParcelable(mDeviceTypeAddr)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mEncapsulationModes)) != NO_ERROR) return status;
-    if ((status = parcel->writeUint32(mEncapsulationMetadataTypes)) != NO_ERROR) return status;
-    return status;
+    media::DeviceDescriptorBase parcelable;
+    return writeToParcelable(&parcelable)
+        ?: parcelable.writeToParcel(parcel);
 }
 
-status_t DeviceDescriptorBase::readFromParcel(const Parcel *parcel)
-{
-    status_t status = NO_ERROR;
-    if ((status = AudioPort::readFromParcel(parcel)) != NO_ERROR) return status;
-    if ((status = AudioPortConfig::readFromParcel(parcel)) != NO_ERROR) return status;
-    if ((status = parcel->readParcelable(&mDeviceTypeAddr)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mEncapsulationModes)) != NO_ERROR) return status;
-    if ((status = parcel->readUint32(&mEncapsulationMetadataTypes)) != NO_ERROR) return status;
-    return status;
+status_t DeviceDescriptorBase::writeToParcelable(media::DeviceDescriptorBase* parcelable) const {
+    AudioPort::writeToParcelable(&parcelable->port);
+    AudioPortConfig::writeToParcelable(&parcelable->portConfig);
+    parcelable->device = VALUE_OR_RETURN_STATUS(
+            legacy2aidl_AudioDeviceTypeAddress(mDeviceTypeAddr));
+    parcelable->encapsulationModes = VALUE_OR_RETURN_STATUS(
+            legacy2aidl_AudioEncapsulationMode_mask(mEncapsulationModes));
+    parcelable->encapsulationMetadataTypes = VALUE_OR_RETURN_STATUS(
+            legacy2aidl_AudioEncapsulationMetadataType_mask(mEncapsulationMetadataTypes));
+    return OK;
+}
+
+status_t DeviceDescriptorBase::readFromParcel(const Parcel *parcel) {
+    media::DeviceDescriptorBase parcelable;
+    return parcelable.readFromParcel(parcel)
+        ?: readFromParcelable(parcelable);
+}
+
+status_t DeviceDescriptorBase::readFromParcelable(const media::DeviceDescriptorBase& parcelable) {
+    status_t status = AudioPort::readFromParcelable(parcelable.port)
+                      ?: AudioPortConfig::readFromParcelable(parcelable.portConfig);
+    if (status != OK) {
+        return status;
+    }
+    mDeviceTypeAddr = VALUE_OR_RETURN_STATUS(
+            aidl2legacy_AudioDeviceTypeAddress(parcelable.device));
+    mEncapsulationModes = VALUE_OR_RETURN_STATUS(
+            aidl2legacy_AudioEncapsulationMode_mask(parcelable.encapsulationModes));
+    mEncapsulationMetadataTypes = VALUE_OR_RETURN_STATUS(
+            aidl2legacy_AudioEncapsulationMetadataType_mask(parcelable.encapsulationMetadataTypes));
+    return OK;
 }
 
 std::string toString(const DeviceDescriptorBaseVector& devices)
@@ -198,4 +218,24 @@
     return deviceTypeAddrs;
 }
 
+ConversionResult<sp<DeviceDescriptorBase>>
+aidl2legacy_DeviceDescriptorBase(const media::DeviceDescriptorBase& aidl) {
+    sp<DeviceDescriptorBase> result = new DeviceDescriptorBase(AUDIO_DEVICE_NONE);
+    status_t status = result->readFromParcelable(aidl);
+    if (status != OK) {
+        return base::unexpected(status);
+    }
+    return result;
+}
+
+ConversionResult<media::DeviceDescriptorBase>
+legacy2aidl_DeviceDescriptorBase(const sp<DeviceDescriptorBase>& legacy) {
+    media::DeviceDescriptorBase aidl;
+    status_t status = legacy->writeToParcelable(&aidl);
+    if (status != OK) {
+        return base::unexpected(status);
+    }
+    return aidl;
+}
+
 } // namespace android
diff --git a/media/libaudiofoundation/include/media/AudioGain.h b/media/libaudiofoundation/include/media/AudioGain.h
index 859f1e7..a06b686 100644
--- a/media/libaudiofoundation/include/media/AudioGain.h
+++ b/media/libaudiofoundation/include/media/AudioGain.h
@@ -16,8 +16,10 @@
 
 #pragma once
 
+#include <android/media/AudioGain.h>
 #include <binder/Parcel.h>
 #include <binder/Parcelable.h>
+#include <media/AidlConversion.h>
 #include <utils/Errors.h>
 #include <utils/RefBase.h>
 #include <system/audio.h>
@@ -72,6 +74,9 @@
     status_t writeToParcel(Parcel* parcel) const override;
     status_t readFromParcel(const Parcel* parcel) override;
 
+    status_t writeToParcelable(media::AudioGain* parcelable) const;
+    status_t readFromParcelable(const media::AudioGain& parcelable);
+
 private:
     int               mIndex;
     struct audio_gain mGain;
@@ -79,6 +84,12 @@
     bool              mUseForVolume = false;
 };
 
+// Conversion routines, according to AidlConversion.h conventions.
+ConversionResult<sp<AudioGain>>
+aidl2legacy_AudioGain(const media::AudioGain& aidl);
+ConversionResult<media::AudioGain>
+legacy2aidl_AudioGain(const sp<AudioGain>& legacy);
+
 class AudioGains : public std::vector<sp<AudioGain> >, public Parcelable
 {
 public:
@@ -104,4 +115,10 @@
     status_t readFromParcel(const Parcel* parcel) override;
 };
 
+// Conversion routines, according to AidlConversion.h conventions.
+ConversionResult<AudioGains>
+aidl2legacy_AudioGains(const std::vector<media::AudioGain>& aidl);
+ConversionResult<std::vector<media::AudioGain>>
+legacy2aidl_AudioGains(const AudioGains& legacy);
+
 } // namespace android
diff --git a/media/libaudiofoundation/include/media/AudioPort.h b/media/libaudiofoundation/include/media/AudioPort.h
index 622b97b..633e4e3 100644
--- a/media/libaudiofoundation/include/media/AudioPort.h
+++ b/media/libaudiofoundation/include/media/AudioPort.h
@@ -19,6 +19,8 @@
 #include <string>
 #include <type_traits>
 
+#include <android/media/AudioPort.h>
+#include <android/media/AudioPortConfig.h>
 #include <binder/Parcel.h>
 #include <binder/Parcelable.h>
 #include <media/AudioGain.h>
@@ -91,6 +93,9 @@
     status_t writeToParcel(Parcel* parcel) const override;
     status_t readFromParcel(const Parcel* parcel) override;
 
+    status_t writeToParcelable(media::AudioPort* parcelable) const;
+    status_t readFromParcelable(const media::AudioPort& parcelable);
+
     AudioGains mGains; // gain controllers
 protected:
     std::string  mName;
@@ -136,6 +141,8 @@
 
     status_t writeToParcel(Parcel* parcel) const override;
     status_t readFromParcel(const Parcel* parcel) override;
+    status_t writeToParcelable(media::AudioPortConfig* parcelable) const;
+    status_t readFromParcelable(const media::AudioPortConfig& parcelable);
 
 protected:
     unsigned int mSamplingRate = 0u;
diff --git a/media/libaudiofoundation/include/media/AudioProfile.h b/media/libaudiofoundation/include/media/AudioProfile.h
index ebe855e..57592bc 100644
--- a/media/libaudiofoundation/include/media/AudioProfile.h
+++ b/media/libaudiofoundation/include/media/AudioProfile.h
@@ -19,8 +19,10 @@
 #include <string>
 #include <vector>
 
+#include <android/media/AudioProfile.h>
 #include <binder/Parcel.h>
 #include <binder/Parcelable.h>
+#include <media/AidlConversion.h>
 #include <media/AudioContainers.h>
 #include <system/audio.h>
 #include <utils/RefBase.h>
@@ -73,6 +75,9 @@
     status_t writeToParcel(Parcel* parcel) const override;
     status_t readFromParcel(const Parcel* parcel) override;
 
+    ConversionResult<media::AudioProfile> toParcelable() const;
+    static ConversionResult<sp<AudioProfile>> fromParcelable(const media::AudioProfile& parcelable);
+
 private:
     std::string  mName;
     audio_format_t mFormat; // The format for an audio profile should only be set when initialized.
@@ -82,8 +87,17 @@
     bool mIsDynamicFormat = false;
     bool mIsDynamicChannels = false;
     bool mIsDynamicRate = false;
+
+    AudioProfile() = default;
+    AudioProfile& operator=(const AudioProfile& other);
 };
 
+// Conversion routines, according to AidlConversion.h conventions.
+ConversionResult<sp<AudioProfile>>
+aidl2legacy_AudioProfile(const media::AudioProfile& aidl);
+ConversionResult<media::AudioProfile>
+legacy2aidl_AudioProfile(const sp<AudioProfile>& legacy);
+
 class AudioProfileVector : public std::vector<sp<AudioProfile>>, public Parcelable
 {
 public:
@@ -117,4 +131,11 @@
 
 bool operator == (const AudioProfile &left, const AudioProfile &right);
 
+// Conversion routines, according to AidlConversion.h conventions.
+ConversionResult<AudioProfileVector>
+aidl2legacy_AudioProfileVector(const std::vector<media::AudioProfile>& aidl);
+ConversionResult<std::vector<media::AudioProfile>>
+legacy2aidl_AudioProfileVector(const AudioProfileVector& legacy);
+
+
 } // namespace android
diff --git a/media/libaudiofoundation/include/media/DeviceDescriptorBase.h b/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
index 9ad8d3d..8a920b7 100644
--- a/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
+++ b/media/libaudiofoundation/include/media/DeviceDescriptorBase.h
@@ -18,6 +18,7 @@
 
 #include <vector>
 
+#include <android/media/DeviceDescriptorBase.h>
 #include <binder/Parcel.h>
 #include <binder/Parcelable.h>
 #include <media/AudioContainers.h>
@@ -76,6 +77,9 @@
     status_t writeToParcel(Parcel* parcel) const override;
     status_t readFromParcel(const Parcel* parcel) override;
 
+    status_t writeToParcelable(media::DeviceDescriptorBase* parcelable) const;
+    status_t readFromParcelable(const media::DeviceDescriptorBase& parcelable);
+
 protected:
     AudioDeviceTypeAddr mDeviceTypeAddr;
     uint32_t mEncapsulationModes = 0;
@@ -107,4 +111,10 @@
  */
 AudioDeviceTypeAddrVector deviceTypeAddrsFromDescriptors(const DeviceDescriptorBaseVector& devices);
 
+// Conversion routines, according to AidlConversion.h conventions.
+ConversionResult<sp<DeviceDescriptorBase>>
+aidl2legacy_DeviceDescriptorBase(const media::DeviceDescriptorBase& aidl);
+ConversionResult<media::DeviceDescriptorBase>
+legacy2aidl_DeviceDescriptorBase(const sp<DeviceDescriptorBase>& legacy);
+
 } // namespace android