media/libaudioclient/AidlConversion.cpp

/*
 * 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 <algorithm>
#include <unordered_map>
#include <utility>
#include <vector>

#define LOG_TAG "AidlConversion"
//#define LOG_NDEBUG 0
#include <utils/Log.h>

#include "media/AidlConversion.h"

#include <media/ShmemCompat.h>
#include <media/stagefright/foundation/MediaDefs.h>

////////////////////////////////////////////////////////////////////////////////////////////////////
// Utilities

namespace android {

using base::unexpected;
using media::audio::common::AudioChannelLayout;
using media::audio::common::AudioConfig;
using media::audio::common::AudioConfigBase;
using media::audio::common::AudioContentType;
using media::audio::common::AudioDevice;
using media::audio::common::AudioDeviceAddress;
using media::audio::common::AudioDeviceDescription;
using media::audio::common::AudioDeviceType;
using media::audio::common::AudioFormatDescription;
using media::audio::common::AudioFormatType;
using media::audio::common::AudioGain;
using media::audio::common::AudioGainConfig;
using media::audio::common::AudioGainMode;
using media::audio::common::AudioInputFlags;
using media::audio::common::AudioIoFlags;
using media::audio::common::AudioMode;
using media::audio::common::AudioOffloadInfo;
using media::audio::common::AudioOutputFlags;
using media::audio::common::AudioPortDeviceExt;
using media::audio::common::AudioPortExt;
using media::audio::common::AudioPortMixExt;
using media::audio::common::AudioPortMixExtUseCase;
using media::audio::common::AudioProfile;
using media::audio::common::AudioSource;
using media::audio::common::AudioStandard;
using media::audio::common::AudioStreamType;
using media::audio::common::AudioUsage;
using media::audio::common::AudioUuid;
using media::audio::common::ExtraAudioDescriptor;
using media::audio::common::Int;
using media::audio::common::PcmType;

namespace {

enum class Direction {
    INPUT, OUTPUT
};

ConversionResult<Direction> direction(media::AudioPortRole role, media::AudioPortType type) {
    switch (type) {
        case media::AudioPortType::NONE:
        case media::AudioPortType::SESSION:
            break;  // must be listed  -Werror,-Wswitch
        case media::AudioPortType::DEVICE:
            switch (role) {
                case media::AudioPortRole::NONE:
                     break;  // must be listed  -Werror,-Wswitch
                case media::AudioPortRole::SOURCE:
                    return Direction::INPUT;
                case media::AudioPortRole::SINK:
                    return Direction::OUTPUT;
            }
            break;
        case media::AudioPortType::MIX:
            switch (role) {
                case media::AudioPortRole::NONE:
                     break;  // must be listed  -Werror,-Wswitch
                case media::AudioPortRole::SOURCE:
                    return Direction::OUTPUT;
                case media::AudioPortRole::SINK:
                    return Direction::INPUT;
            }
            break;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<Direction> direction(audio_port_role_t role, audio_port_type_t type) {
    switch (type) {
        case AUDIO_PORT_TYPE_NONE:
        case AUDIO_PORT_TYPE_SESSION:
            break;  // must be listed  -Werror,-Wswitch
        case AUDIO_PORT_TYPE_DEVICE:
            switch (role) {
                case AUDIO_PORT_ROLE_NONE:
                     break;  // must be listed  -Werror,-Wswitch
                case AUDIO_PORT_ROLE_SOURCE:
                    return Direction::INPUT;
                case AUDIO_PORT_ROLE_SINK:
                    return Direction::OUTPUT;
            }
            break;
        case AUDIO_PORT_TYPE_MIX:
            switch (role) {
                case AUDIO_PORT_ROLE_NONE:
                     break;  // must be listed  -Werror,-Wswitch
                case AUDIO_PORT_ROLE_SOURCE:
                    return Direction::OUTPUT;
                case AUDIO_PORT_ROLE_SINK:
                    return Direction::INPUT;
            }
            break;
    }
    return unexpected(BAD_VALUE);
}

}  // namespace

////////////////////////////////////////////////////////////////////////////////////////////////////
// Converters

ConversionResult<audio_io_config_event_t> aidl2legacy_AudioIoConfigEvent_audio_io_config_event_t(
        media::AudioIoConfigEvent aidl) {
    switch (aidl) {
        case media::AudioIoConfigEvent::OUTPUT_REGISTERED:
            return AUDIO_OUTPUT_REGISTERED;
        case media::AudioIoConfigEvent::OUTPUT_OPENED:
            return AUDIO_OUTPUT_OPENED;
        case media::AudioIoConfigEvent::OUTPUT_CLOSED:
            return AUDIO_OUTPUT_CLOSED;
        case media::AudioIoConfigEvent::OUTPUT_CONFIG_CHANGED:
            return AUDIO_OUTPUT_CONFIG_CHANGED;
        case media::AudioIoConfigEvent::INPUT_REGISTERED:
            return AUDIO_INPUT_REGISTERED;
        case media::AudioIoConfigEvent::INPUT_OPENED:
            return AUDIO_INPUT_OPENED;
        case media::AudioIoConfigEvent::INPUT_CLOSED:
            return AUDIO_INPUT_CLOSED;
        case media::AudioIoConfigEvent::INPUT_CONFIG_CHANGED:
            return AUDIO_INPUT_CONFIG_CHANGED;
        case media::AudioIoConfigEvent::CLIENT_STARTED:
            return AUDIO_CLIENT_STARTED;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<media::AudioIoConfigEvent> legacy2aidl_audio_io_config_event_t_AudioIoConfigEvent(
        audio_io_config_event_t legacy) {
    switch (legacy) {
        case AUDIO_OUTPUT_REGISTERED:
            return media::AudioIoConfigEvent::OUTPUT_REGISTERED;
        case AUDIO_OUTPUT_OPENED:
            return media::AudioIoConfigEvent::OUTPUT_OPENED;
        case AUDIO_OUTPUT_CLOSED:
            return media::AudioIoConfigEvent::OUTPUT_CLOSED;
        case AUDIO_OUTPUT_CONFIG_CHANGED:
            return media::AudioIoConfigEvent::OUTPUT_CONFIG_CHANGED;
        case AUDIO_INPUT_REGISTERED:
            return media::AudioIoConfigEvent::INPUT_REGISTERED;
        case AUDIO_INPUT_OPENED:
            return media::AudioIoConfigEvent::INPUT_OPENED;
        case AUDIO_INPUT_CLOSED:
            return media::AudioIoConfigEvent::INPUT_CLOSED;
        case AUDIO_INPUT_CONFIG_CHANGED:
            return media::AudioIoConfigEvent::INPUT_CONFIG_CHANGED;
        case AUDIO_CLIENT_STARTED:
            return media::AudioIoConfigEvent::CLIENT_STARTED;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<audio_port_role_t> aidl2legacy_AudioPortRole_audio_port_role_t(
        media::AudioPortRole aidl) {
    switch (aidl) {
        case media::AudioPortRole::NONE:
            return AUDIO_PORT_ROLE_NONE;
        case media::AudioPortRole::SOURCE:
            return AUDIO_PORT_ROLE_SOURCE;
        case media::AudioPortRole::SINK:
            return AUDIO_PORT_ROLE_SINK;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<media::AudioPortRole> legacy2aidl_audio_port_role_t_AudioPortRole(
        audio_port_role_t legacy) {
    switch (legacy) {
        case AUDIO_PORT_ROLE_NONE:
            return media::AudioPortRole::NONE;
        case AUDIO_PORT_ROLE_SOURCE:
            return media::AudioPortRole::SOURCE;
        case AUDIO_PORT_ROLE_SINK:
            return media::AudioPortRole::SINK;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<audio_port_type_t> aidl2legacy_AudioPortType_audio_port_type_t(
        media::AudioPortType aidl) {
    switch (aidl) {
        case media::AudioPortType::NONE:
            return AUDIO_PORT_TYPE_NONE;
        case media::AudioPortType::DEVICE:
            return AUDIO_PORT_TYPE_DEVICE;
        case media::AudioPortType::MIX:
            return AUDIO_PORT_TYPE_MIX;
        case media::AudioPortType::SESSION:
            return AUDIO_PORT_TYPE_SESSION;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<media::AudioPortType> legacy2aidl_audio_port_type_t_AudioPortType(
        audio_port_type_t legacy) {
    switch (legacy) {
        case AUDIO_PORT_TYPE_NONE:
            return media::AudioPortType::NONE;
        case AUDIO_PORT_TYPE_DEVICE:
            return media::AudioPortType::DEVICE;
        case AUDIO_PORT_TYPE_MIX:
            return media::AudioPortType::MIX;
        case AUDIO_PORT_TYPE_SESSION:
            return media::AudioPortType::SESSION;
    }
    return unexpected(BAD_VALUE);
}

// This type is unnamed in the original definition, thus we name it here.
using audio_port_config_mix_ext_usecase = decltype(audio_port_config_mix_ext::usecase);

ConversionResult<audio_port_config_mix_ext_usecase> aidl2legacy_AudioPortMixExtUseCase(
        const AudioPortMixExtUseCase& aidl, media::AudioPortRole role) {
    audio_port_config_mix_ext_usecase legacy;

    switch (role) {
        case media::AudioPortRole::NONE:
            // Just verify that the union is empty.
            VALUE_OR_RETURN(UNION_GET(aidl, unspecified));
            return legacy;

        case media::AudioPortRole::SOURCE:
            // This is not a bug. A SOURCE role corresponds to the stream field.
            legacy.stream = VALUE_OR_RETURN(aidl2legacy_AudioStreamType_audio_stream_type_t(
                    VALUE_OR_RETURN(UNION_GET(aidl, stream))));
            return legacy;

        case media::AudioPortRole::SINK:
            // This is not a bug. A SINK role corresponds to the source field.
            legacy.source = VALUE_OR_RETURN(aidl2legacy_AudioSource_audio_source_t(
                    VALUE_OR_RETURN(UNION_GET(aidl, source))));
            return legacy;
    }
    LOG_ALWAYS_FATAL("Shouldn't get here"); // with -Werror,-Wswitch may compile-time fail
}

ConversionResult<AudioPortMixExtUseCase> legacy2aidl_AudioPortMixExtUseCase(
        const audio_port_config_mix_ext_usecase& legacy, audio_port_role_t role) {
    AudioPortMixExtUseCase aidl;

    switch (role) {
        case AUDIO_PORT_ROLE_NONE:
            UNION_SET(aidl, unspecified, false);
            return aidl;
        case AUDIO_PORT_ROLE_SOURCE:
            // This is not a bug. A SOURCE role corresponds to the stream field.
            UNION_SET(aidl, stream, VALUE_OR_RETURN(
                    legacy2aidl_audio_stream_type_t_AudioStreamType(legacy.stream)));
            return aidl;
        case AUDIO_PORT_ROLE_SINK:
            // This is not a bug. A SINK role corresponds to the source field.
            UNION_SET(aidl, source,
                      VALUE_OR_RETURN(legacy2aidl_audio_source_t_AudioSource(legacy.source)));
            return aidl;
    }
    LOG_ALWAYS_FATAL("Shouldn't get here"); // with -Werror,-Wswitch may compile-time fail
}

ConversionResult<audio_port_config_mix_ext> aidl2legacy_AudioPortMixExt(
        const AudioPortMixExt& aidl, media::AudioPortRole role,
        const media::AudioPortMixExtSys& aidlMixExt) {
    audio_port_config_mix_ext legacy;
    legacy.hw_module = VALUE_OR_RETURN(
            aidl2legacy_int32_t_audio_module_handle_t(aidlMixExt.hwModule));
    legacy.handle = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_io_handle_t(aidl.handle));
    legacy.usecase = VALUE_OR_RETURN(aidl2legacy_AudioPortMixExtUseCase(aidl.usecase, role));
    return legacy;
}

status_t legacy2aidl_AudioPortMixExt(
        const audio_port_config_mix_ext& legacy, audio_port_role_t role,
        AudioPortMixExt* aidl, media::AudioPortMixExtSys* aidlMixExt) {
    aidlMixExt->hwModule = VALUE_OR_RETURN_STATUS(
            legacy2aidl_audio_module_handle_t_int32_t(legacy.hw_module));
    aidl->handle = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_io_handle_t_int32_t(legacy.handle));
    aidl->usecase = VALUE_OR_RETURN_STATUS(
            legacy2aidl_AudioPortMixExtUseCase(legacy.usecase, role));
    return OK;
}

ConversionResult<audio_port_config_session_ext>
aidl2legacy_int32_t_audio_port_config_session_ext(int32_t aidl) {
    audio_port_config_session_ext legacy;
    legacy.session = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_session_t(aidl));
    return legacy;
}

ConversionResult<int32_t>
legacy2aidl_audio_port_config_session_ext_int32_t(
        const audio_port_config_session_ext& legacy) {
    return legacy2aidl_audio_session_t_int32_t(legacy.session);
}

ConversionResult<audio_port_config_device_ext>
aidl2legacy_AudioPortDeviceExt_audio_port_config_device_ext(
        const AudioPortDeviceExt& aidl, const media::AudioPortDeviceExtSys& aidlDeviceExt) {
    audio_port_config_device_ext legacy;
    legacy.hw_module = VALUE_OR_RETURN(
            aidl2legacy_int32_t_audio_module_handle_t(aidlDeviceExt.hwModule));
    RETURN_IF_ERROR(aidl2legacy_AudioDevice_audio_device(
                    aidl.device, &legacy.type, legacy.address));
    return legacy;
}

status_t legacy2aidl_audio_port_config_device_ext_AudioPortDeviceExt(
        const audio_port_config_device_ext& legacy,
        AudioPortDeviceExt* aidl, media::AudioPortDeviceExtSys* aidlDeviceExt) {
    aidlDeviceExt->hwModule = VALUE_OR_RETURN_STATUS(
            legacy2aidl_audio_module_handle_t_int32_t(legacy.hw_module));
    aidl->device = VALUE_OR_RETURN_STATUS(
            legacy2aidl_audio_device_AudioDevice(legacy.type, legacy.address));
    return OK;
}

// This type is unnamed in the original definition, thus we name it here.
using audio_port_config_ext = decltype(audio_port_config::ext);

ConversionResult<audio_port_config_ext> aidl2legacy_AudioPortExt_audio_port_config_ext(
        const AudioPortExt& aidl, media::AudioPortType type,
        media::AudioPortRole role, const media::AudioPortExtSys& aidlSys) {
    audio_port_config_ext legacy;
    switch (type) {
        case media::AudioPortType::NONE:
            // Just verify that the union is empty.
            VALUE_OR_RETURN(UNION_GET(aidl, unspecified));
            return legacy;
        case media::AudioPortType::DEVICE:
            legacy.device = VALUE_OR_RETURN(
                    aidl2legacy_AudioPortDeviceExt_audio_port_config_device_ext(
                            VALUE_OR_RETURN(UNION_GET(aidl, device)),
                            VALUE_OR_RETURN(UNION_GET(aidlSys, device))));
            return legacy;
        case media::AudioPortType::MIX:
            legacy.mix = VALUE_OR_RETURN(
                    aidl2legacy_AudioPortMixExt(
                            VALUE_OR_RETURN(UNION_GET(aidl, mix)), role,
                            VALUE_OR_RETURN(UNION_GET(aidlSys, mix))));
            return legacy;
        case media::AudioPortType::SESSION:
            legacy.session = VALUE_OR_RETURN(
                    aidl2legacy_int32_t_audio_port_config_session_ext(
                            VALUE_OR_RETURN(UNION_GET(aidlSys, session))));
            return legacy;

    }
    LOG_ALWAYS_FATAL("Shouldn't get here"); // with -Werror,-Wswitch may compile-time fail
}

status_t legacy2aidl_AudioPortExt(
        const audio_port_config_ext& legacy, audio_port_type_t type, audio_port_role_t role,
        AudioPortExt* aidl, media::AudioPortExtSys* aidlSys) {
    switch (type) {
        case AUDIO_PORT_TYPE_NONE:
            UNION_SET(*aidl, unspecified, false);
            UNION_SET(*aidlSys, unspecified, false);
            return OK;
        case AUDIO_PORT_TYPE_DEVICE: {
            AudioPortDeviceExt device;
            media::AudioPortDeviceExtSys deviceSys;
            RETURN_STATUS_IF_ERROR(
                    legacy2aidl_audio_port_config_device_ext_AudioPortDeviceExt(
                            legacy.device, &device, &deviceSys));
            UNION_SET(*aidl, device, device);
            UNION_SET(*aidlSys, device, deviceSys);
            return OK;
        }
        case AUDIO_PORT_TYPE_MIX: {
            AudioPortMixExt mix;
            media::AudioPortMixExtSys mixSys;
            RETURN_STATUS_IF_ERROR(legacy2aidl_AudioPortMixExt(legacy.mix, role, &mix, &mixSys));
            UNION_SET(*aidl, mix, mix);
            UNION_SET(*aidlSys, mix, mixSys);
            return OK;
        }
        case AUDIO_PORT_TYPE_SESSION:
            UNION_SET(*aidl, unspecified, false);
            UNION_SET(*aidlSys, session, VALUE_OR_RETURN_STATUS(
                            legacy2aidl_audio_port_config_session_ext_int32_t(legacy.session)));
            return OK;
    }
    LOG_ALWAYS_FATAL("Shouldn't get here"); // with -Werror,-Wswitch may compile-time fail
}

ConversionResult<audio_port_config> aidl2legacy_AudioPortConfig_audio_port_config(
        const media::AudioPortConfigFw& aidl) {
    audio_port_config legacy{};
    legacy.id = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_port_handle_t(aidl.hal.id));
    legacy.role = VALUE_OR_RETURN(aidl2legacy_AudioPortRole_audio_port_role_t(aidl.sys.role));
    legacy.type = VALUE_OR_RETURN(aidl2legacy_AudioPortType_audio_port_type_t(aidl.sys.type));
    const bool isInput =
            VALUE_OR_RETURN(direction(aidl.sys.role, aidl.sys.type)) == Direction::INPUT;
    if (aidl.hal.sampleRate.has_value()) {
        legacy.sample_rate = VALUE_OR_RETURN(
                convertIntegral<unsigned int>(aidl.hal.sampleRate.value().value));
        legacy.config_mask |= AUDIO_PORT_CONFIG_SAMPLE_RATE;
    }
    if (aidl.hal.channelMask.has_value()) {
        legacy.channel_mask =
                VALUE_OR_RETURN(
                        aidl2legacy_AudioChannelLayout_audio_channel_mask_t(
                                aidl.hal.channelMask.value(), isInput));
        legacy.config_mask |= AUDIO_PORT_CONFIG_CHANNEL_MASK;
    }
    if (aidl.hal.format.has_value()) {
        legacy.format = VALUE_OR_RETURN(
                aidl2legacy_AudioFormatDescription_audio_format_t(aidl.hal.format.value()));
        legacy.config_mask |= AUDIO_PORT_CONFIG_FORMAT;
    }
    if (aidl.hal.gain.has_value()) {
        legacy.gain = VALUE_OR_RETURN(aidl2legacy_AudioGainConfig_audio_gain_config(
                        aidl.hal.gain.value(), isInput));
        legacy.config_mask |= AUDIO_PORT_CONFIG_GAIN;
    }
    if (aidl.hal.flags.has_value()) {
        legacy.flags = VALUE_OR_RETURN(
                aidl2legacy_AudioIoFlags_audio_io_flags(aidl.hal.flags.value(), isInput));
        legacy.config_mask |= AUDIO_PORT_CONFIG_FLAGS;
    }
    legacy.ext = VALUE_OR_RETURN(
            aidl2legacy_AudioPortExt_audio_port_config_ext(
                    aidl.hal.ext, aidl.sys.type, aidl.sys.role, aidl.sys.ext));
    return legacy;
}

ConversionResult<media::AudioPortConfigFw> legacy2aidl_audio_port_config_AudioPortConfig(
        const audio_port_config& legacy) {
    media::AudioPortConfigFw aidl;
    aidl.hal.id = VALUE_OR_RETURN(legacy2aidl_audio_port_handle_t_int32_t(legacy.id));
    aidl.sys.role = VALUE_OR_RETURN(legacy2aidl_audio_port_role_t_AudioPortRole(legacy.role));
    aidl.sys.type = VALUE_OR_RETURN(legacy2aidl_audio_port_type_t_AudioPortType(legacy.type));
    const bool isInput = VALUE_OR_RETURN(
            direction(legacy.role, legacy.type)) == Direction::INPUT;
    if (legacy.config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) {
        Int aidl_sampleRate;
        aidl_sampleRate.value = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.sample_rate));
        aidl.hal.sampleRate = aidl_sampleRate;
    }
    if (legacy.config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) {
        aidl.hal.channelMask = VALUE_OR_RETURN(
                legacy2aidl_audio_channel_mask_t_AudioChannelLayout(legacy.channel_mask, isInput));
    }
    if (legacy.config_mask & AUDIO_PORT_CONFIG_FORMAT) {
        aidl.hal.format = VALUE_OR_RETURN(
                legacy2aidl_audio_format_t_AudioFormatDescription(legacy.format));
    }
    if (legacy.config_mask & AUDIO_PORT_CONFIG_GAIN) {
        aidl.hal.gain = VALUE_OR_RETURN(
                legacy2aidl_audio_gain_config_AudioGainConfig(legacy.gain, isInput));
    }
    if (legacy.config_mask & AUDIO_PORT_CONFIG_FLAGS) {
        aidl.hal.flags = VALUE_OR_RETURN(
                legacy2aidl_audio_io_flags_AudioIoFlags(legacy.flags, isInput));
    }
    RETURN_IF_ERROR(legacy2aidl_AudioPortExt(legacy.ext, legacy.type, legacy.role,
                    &aidl.hal.ext, &aidl.sys.ext));
    return aidl;
}

ConversionResult<struct audio_patch> aidl2legacy_AudioPatch_audio_patch(
        const media::AudioPatch& aidl) {
    struct audio_patch legacy;
    legacy.id = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_patch_handle_t(aidl.id));
    legacy.num_sinks = VALUE_OR_RETURN(convertIntegral<unsigned int>(aidl.sinks.size()));
    if (legacy.num_sinks > AUDIO_PATCH_PORTS_MAX) {
        return unexpected(BAD_VALUE);
    }
    for (size_t i = 0; i < legacy.num_sinks; ++i) {
        legacy.sinks[i] =
                VALUE_OR_RETURN(aidl2legacy_AudioPortConfig_audio_port_config(aidl.sinks[i]));
    }
    legacy.num_sources = VALUE_OR_RETURN(convertIntegral<unsigned int>(aidl.sources.size()));
    if (legacy.num_sources > AUDIO_PATCH_PORTS_MAX) {
        return unexpected(BAD_VALUE);
    }
    for (size_t i = 0; i < legacy.num_sources; ++i) {
        legacy.sources[i] =
                VALUE_OR_RETURN(aidl2legacy_AudioPortConfig_audio_port_config(aidl.sources[i]));
    }
    return legacy;
}

ConversionResult<media::AudioPatch> legacy2aidl_audio_patch_AudioPatch(
        const struct audio_patch& legacy) {
    media::AudioPatch aidl;
    aidl.id = VALUE_OR_RETURN(legacy2aidl_audio_patch_handle_t_int32_t(legacy.id));

    if (legacy.num_sinks > AUDIO_PATCH_PORTS_MAX) {
        return unexpected(BAD_VALUE);
    }
    for (unsigned int i = 0; i < legacy.num_sinks; ++i) {
        aidl.sinks.push_back(
                VALUE_OR_RETURN(legacy2aidl_audio_port_config_AudioPortConfig(legacy.sinks[i])));
    }
    if (legacy.num_sources > AUDIO_PATCH_PORTS_MAX) {
        return unexpected(BAD_VALUE);
    }
    for (unsigned int i = 0; i < legacy.num_sources; ++i) {
        aidl.sources.push_back(
                VALUE_OR_RETURN(legacy2aidl_audio_port_config_AudioPortConfig(legacy.sources[i])));
    }
    return aidl;
}

ConversionResult<sp<AudioIoDescriptor>> aidl2legacy_AudioIoDescriptor_AudioIoDescriptor(
        const media::AudioIoDescriptor& aidl) {
    const audio_io_handle_t io_handle = VALUE_OR_RETURN(
            aidl2legacy_int32_t_audio_io_handle_t(aidl.ioHandle));
    const struct audio_patch patch = VALUE_OR_RETURN(
            aidl2legacy_AudioPatch_audio_patch(aidl.patch));
    const bool isInput = aidl.isInput;
    const uint32_t sampling_rate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.samplingRate));
    const audio_format_t format = VALUE_OR_RETURN(
            aidl2legacy_AudioFormatDescription_audio_format_t(aidl.format));
    const audio_channel_mask_t channel_mask = VALUE_OR_RETURN(
            aidl2legacy_AudioChannelLayout_audio_channel_mask_t(aidl.channelMask, isInput));
    const size_t frame_count = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCount));
    const size_t frame_count_hal = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCountHAL));
    const uint32_t latency = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.latency));
    const audio_port_handle_t port_id = VALUE_OR_RETURN(
            aidl2legacy_int32_t_audio_port_handle_t(aidl.portId));
    return sp<AudioIoDescriptor>::make(io_handle, patch, isInput, sampling_rate, format,
            channel_mask, frame_count, frame_count_hal, latency, port_id);
}

ConversionResult<media::AudioIoDescriptor> legacy2aidl_AudioIoDescriptor_AudioIoDescriptor(
        const sp<AudioIoDescriptor>& legacy) {
    media::AudioIoDescriptor aidl;
    aidl.ioHandle = VALUE_OR_RETURN(legacy2aidl_audio_io_handle_t_int32_t(legacy->getIoHandle()));
    aidl.patch = VALUE_OR_RETURN(legacy2aidl_audio_patch_AudioPatch(legacy->getPatch()));
    aidl.isInput = legacy->getIsInput();
    aidl.samplingRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy->getSamplingRate()));
    aidl.format = VALUE_OR_RETURN(
            legacy2aidl_audio_format_t_AudioFormatDescription(legacy->getFormat()));
    aidl.channelMask = VALUE_OR_RETURN(legacy2aidl_audio_channel_mask_t_AudioChannelLayout(
                    legacy->getChannelMask(), legacy->getIsInput()));
    aidl.frameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(legacy->getFrameCount()));
    aidl.frameCountHAL = VALUE_OR_RETURN(convertIntegral<int64_t>(legacy->getFrameCountHAL()));
    aidl.latency = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy->getLatency()));
    aidl.portId = VALUE_OR_RETURN(legacy2aidl_audio_port_handle_t_int32_t(legacy->getPortId()));
    return aidl;
}

ConversionResult<AudioClient> aidl2legacy_AudioClient_AudioClient(
        const media::AudioClient& aidl) {
    AudioClient legacy;
    legacy.clientTid = VALUE_OR_RETURN(aidl2legacy_int32_t_pid_t(aidl.clientTid));
    legacy.attributionSource = aidl.attributionSource;
    return legacy;
}

ConversionResult<media::AudioClient> legacy2aidl_AudioClient_AudioClient(
        const AudioClient& legacy) {
    media::AudioClient aidl;
    aidl.clientTid = VALUE_OR_RETURN(legacy2aidl_pid_t_int32_t(legacy.clientTid));
    aidl.attributionSource = legacy.attributionSource;
    return aidl;
}

ConversionResult<audio_flags_mask_t>
aidl2legacy_AudioFlag_audio_flags_mask_t(media::AudioFlag aidl) {
    switch (aidl) {
        case media::AudioFlag::AUDIBILITY_ENFORCED:
            return AUDIO_FLAG_AUDIBILITY_ENFORCED;
        case media::AudioFlag::SECURE:
            return AUDIO_FLAG_SECURE;
        case media::AudioFlag::SCO:
            return AUDIO_FLAG_SCO;
        case media::AudioFlag::BEACON:
            return AUDIO_FLAG_BEACON;
        case media::AudioFlag::HW_AV_SYNC:
            return AUDIO_FLAG_HW_AV_SYNC;
        case media::AudioFlag::HW_HOTWORD:
            return AUDIO_FLAG_HW_HOTWORD;
        case media::AudioFlag::BYPASS_INTERRUPTION_POLICY:
            return AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY;
        case media::AudioFlag::BYPASS_MUTE:
            return AUDIO_FLAG_BYPASS_MUTE;
        case media::AudioFlag::LOW_LATENCY:
            return AUDIO_FLAG_LOW_LATENCY;
        case media::AudioFlag::DEEP_BUFFER:
            return AUDIO_FLAG_DEEP_BUFFER;
        case media::AudioFlag::NO_MEDIA_PROJECTION:
            return AUDIO_FLAG_NO_MEDIA_PROJECTION;
        case media::AudioFlag::MUTE_HAPTIC:
            return AUDIO_FLAG_MUTE_HAPTIC;
        case media::AudioFlag::NO_SYSTEM_CAPTURE:
            return AUDIO_FLAG_NO_SYSTEM_CAPTURE;
        case media::AudioFlag::CAPTURE_PRIVATE:
            return AUDIO_FLAG_CAPTURE_PRIVATE;
        case media::AudioFlag::CONTENT_SPATIALIZED:
            return AUDIO_FLAG_CONTENT_SPATIALIZED;
        case media::AudioFlag::NEVER_SPATIALIZE:
            return AUDIO_FLAG_NEVER_SPATIALIZE;
        case media::AudioFlag::CALL_REDIRECTION:
            return AUDIO_FLAG_CALL_REDIRECTION;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<media::AudioFlag>
legacy2aidl_audio_flags_mask_t_AudioFlag(audio_flags_mask_t legacy) {
    switch (legacy) {
        case AUDIO_FLAG_NONE:
            return unexpected(BAD_VALUE);
        case AUDIO_FLAG_AUDIBILITY_ENFORCED:
            return media::AudioFlag::AUDIBILITY_ENFORCED;
        case AUDIO_FLAG_SECURE:
            return media::AudioFlag::SECURE;
        case AUDIO_FLAG_SCO:
            return media::AudioFlag::SCO;
        case AUDIO_FLAG_BEACON:
            return media::AudioFlag::BEACON;
        case AUDIO_FLAG_HW_AV_SYNC:
            return media::AudioFlag::HW_AV_SYNC;
        case AUDIO_FLAG_HW_HOTWORD:
            return media::AudioFlag::HW_HOTWORD;
        case AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY:
            return media::AudioFlag::BYPASS_INTERRUPTION_POLICY;
        case AUDIO_FLAG_BYPASS_MUTE:
            return media::AudioFlag::BYPASS_MUTE;
        case AUDIO_FLAG_LOW_LATENCY:
            return media::AudioFlag::LOW_LATENCY;
        case AUDIO_FLAG_DEEP_BUFFER:
            return media::AudioFlag::DEEP_BUFFER;
        case AUDIO_FLAG_NO_MEDIA_PROJECTION:
            return media::AudioFlag::NO_MEDIA_PROJECTION;
        case AUDIO_FLAG_MUTE_HAPTIC:
            return media::AudioFlag::MUTE_HAPTIC;
        case AUDIO_FLAG_NO_SYSTEM_CAPTURE:
            return media::AudioFlag::NO_SYSTEM_CAPTURE;
        case AUDIO_FLAG_CAPTURE_PRIVATE:
            return media::AudioFlag::CAPTURE_PRIVATE;
        case AUDIO_FLAG_CONTENT_SPATIALIZED:
            return media::AudioFlag::CONTENT_SPATIALIZED;
        case AUDIO_FLAG_NEVER_SPATIALIZE:
            return media::AudioFlag::NEVER_SPATIALIZE;
        case AUDIO_FLAG_CALL_REDIRECTION:
            return media::AudioFlag::CALL_REDIRECTION;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<audio_flags_mask_t>
aidl2legacy_int32_t_audio_flags_mask_t_mask(int32_t aidl) {
    return convertBitmask<audio_flags_mask_t, int32_t, audio_flags_mask_t, media::AudioFlag>(
            aidl, aidl2legacy_AudioFlag_audio_flags_mask_t, indexToEnum_index<media::AudioFlag>,
            enumToMask_bitmask<audio_flags_mask_t, audio_flags_mask_t>);
}

ConversionResult<int32_t>
legacy2aidl_audio_flags_mask_t_int32_t_mask(audio_flags_mask_t legacy) {
    return convertBitmask<int32_t, audio_flags_mask_t, media::AudioFlag, audio_flags_mask_t>(
            legacy, legacy2aidl_audio_flags_mask_t_AudioFlag,
            indexToEnum_bitmask<audio_flags_mask_t>,
            enumToMask_index<int32_t, media::AudioFlag>);
}

ConversionResult<audio_attributes_t>
aidl2legacy_AudioAttributesInternal_audio_attributes_t(const media::AudioAttributesInternal& aidl) {
    audio_attributes_t legacy;
    legacy.content_type = VALUE_OR_RETURN(
            aidl2legacy_AudioContentType_audio_content_type_t(aidl.contentType));
    legacy.usage = VALUE_OR_RETURN(aidl2legacy_AudioUsage_audio_usage_t(aidl.usage));
    legacy.source = VALUE_OR_RETURN(aidl2legacy_AudioSource_audio_source_t(aidl.source));
    legacy.flags = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_flags_mask_t_mask(aidl.flags));
    RETURN_IF_ERROR(aidl2legacy_string(aidl.tags, legacy.tags, sizeof(legacy.tags)));
    return legacy;
}

ConversionResult<media::AudioAttributesInternal>
legacy2aidl_audio_attributes_t_AudioAttributesInternal(const audio_attributes_t& legacy) {
    media::AudioAttributesInternal aidl;
    aidl.contentType = VALUE_OR_RETURN(
            legacy2aidl_audio_content_type_t_AudioContentType(legacy.content_type));
    aidl.usage = VALUE_OR_RETURN(legacy2aidl_audio_usage_t_AudioUsage(legacy.usage));
    aidl.source = VALUE_OR_RETURN(legacy2aidl_audio_source_t_AudioSource(legacy.source));
    aidl.flags = VALUE_OR_RETURN(legacy2aidl_audio_flags_mask_t_int32_t_mask(legacy.flags));
    aidl.tags = VALUE_OR_RETURN(legacy2aidl_string(legacy.tags, sizeof(legacy.tags)));
    return aidl;
}

ConversionResult<sp<IMemory>>
aidl2legacy_SharedFileRegion_IMemory(const media::SharedFileRegion& aidl) {
    sp<IMemory> legacy;
    if (!convertSharedFileRegionToIMemory(aidl, &legacy)) {
        return unexpected(BAD_VALUE);
    }
    return legacy;
}

ConversionResult<media::SharedFileRegion>
legacy2aidl_IMemory_SharedFileRegion(const sp<IMemory>& legacy) {
    media::SharedFileRegion aidl;
    if (!convertIMemoryToSharedFileRegion(legacy, &aidl)) {
        return unexpected(BAD_VALUE);
    }
    return aidl;
}

ConversionResult<sp<IMemory>> aidl2legacy_NullableSharedFileRegion_IMemory(
        const std::optional<media::SharedFileRegion>& aidl) {
    sp<IMemory> legacy;
    if (!convertNullableSharedFileRegionToIMemory(aidl, &legacy)) {
        return unexpected(BAD_VALUE);
    }
    return legacy;
}

ConversionResult<std::optional<media::SharedFileRegion>>
legacy2aidl_NullableIMemory_SharedFileRegion(const sp<IMemory>& legacy) {
    std::optional<media::SharedFileRegion> aidl;
    if (!convertNullableIMemoryToSharedFileRegion(legacy, &aidl)) {
        return unexpected(BAD_VALUE);
    }
    return aidl;
}

ConversionResult<AudioTimestamp>
aidl2legacy_AudioTimestampInternal_AudioTimestamp(const media::AudioTimestampInternal& aidl) {
    AudioTimestamp legacy;
    legacy.mPosition = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.position));
    legacy.mTime.tv_sec = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.sec));
    legacy.mTime.tv_nsec = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.nsec));
    return legacy;
}

ConversionResult<media::AudioTimestampInternal>
legacy2aidl_AudioTimestamp_AudioTimestampInternal(const AudioTimestamp& legacy) {
    media::AudioTimestampInternal aidl;
    aidl.position = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.mPosition));
    aidl.sec = VALUE_OR_RETURN(convertIntegral<int64_t>(legacy.mTime.tv_sec));
    aidl.nsec = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.mTime.tv_nsec));
    return aidl;
}

ConversionResult<effect_descriptor_t>
aidl2legacy_EffectDescriptor_effect_descriptor_t(const media::EffectDescriptor& aidl) {
    effect_descriptor_t legacy;
    legacy.type = VALUE_OR_RETURN(aidl2legacy_AudioUuid_audio_uuid_t(aidl.type));
    legacy.uuid = VALUE_OR_RETURN(aidl2legacy_AudioUuid_audio_uuid_t(aidl.uuid));
    legacy.apiVersion = VALUE_OR_RETURN(convertReinterpret<uint32_t>(aidl.apiVersion));
    legacy.flags = VALUE_OR_RETURN(convertReinterpret<uint32_t>(aidl.flags));
    legacy.cpuLoad = VALUE_OR_RETURN(convertIntegral<uint16_t>(aidl.cpuLoad));
    legacy.memoryUsage = VALUE_OR_RETURN(convertIntegral<uint16_t>(aidl.memoryUsage));
    RETURN_IF_ERROR(aidl2legacy_string(aidl.name, legacy.name, sizeof(legacy.name)));
    RETURN_IF_ERROR(
            aidl2legacy_string(aidl.implementor, legacy.implementor, sizeof(legacy.implementor)));
    return legacy;
}

ConversionResult<media::EffectDescriptor>
legacy2aidl_effect_descriptor_t_EffectDescriptor(const effect_descriptor_t& legacy) {
    media::EffectDescriptor aidl;
    aidl.type = VALUE_OR_RETURN(legacy2aidl_audio_uuid_t_AudioUuid(legacy.type));
    aidl.uuid = VALUE_OR_RETURN(legacy2aidl_audio_uuid_t_AudioUuid(legacy.uuid));
    aidl.apiVersion = VALUE_OR_RETURN(convertReinterpret<int32_t>(legacy.apiVersion));
    aidl.flags = VALUE_OR_RETURN(convertReinterpret<int32_t>(legacy.flags));
    aidl.cpuLoad = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.cpuLoad));
    aidl.memoryUsage = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.memoryUsage));
    aidl.name = VALUE_OR_RETURN(legacy2aidl_string(legacy.name, sizeof(legacy.name)));
    aidl.implementor = VALUE_OR_RETURN(
            legacy2aidl_string(legacy.implementor, sizeof(legacy.implementor)));
    return aidl;
}

ConversionResult<audio_port_mix_ext>
aidl2legacy_AudioPortMixExt_audio_port_mix_ext(
        const AudioPortMixExt& aidl, const media::AudioPortMixExtSys& aidlSys) {
    audio_port_mix_ext legacy{};
    legacy.hw_module = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_module_handle_t(aidlSys.hwModule));
    legacy.handle = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_io_handle_t(aidl.handle));
    return legacy;
}

status_t
legacy2aidl_audio_port_mix_ext_AudioPortMixExt(const audio_port_mix_ext& legacy,
        AudioPortMixExt* aidl, media::AudioPortMixExtSys* aidlMixExt) {
    aidlMixExt->hwModule = VALUE_OR_RETURN_STATUS(
            legacy2aidl_audio_module_handle_t_int32_t(legacy.hw_module));
    aidl->handle = VALUE_OR_RETURN_STATUS(legacy2aidl_audio_io_handle_t_int32_t(legacy.handle));
    return OK;
}

ConversionResult<audio_port_session_ext>
aidl2legacy_int32_t_audio_port_session_ext(int32_t aidl) {
    audio_port_session_ext legacy;
    legacy.session = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_session_t(aidl));
    return legacy;
}

ConversionResult<int32_t>
legacy2aidl_audio_port_session_ext_int32_t(const audio_port_session_ext& legacy) {
    return legacy2aidl_audio_session_t_int32_t(legacy.session);
}

ConversionResult<audio_port_device_ext>
aidl2legacy_AudioPortDeviceExt_audio_port_device_ext(
        const AudioPortDeviceExt& aidl, const media::AudioPortDeviceExtSys& aidlSys) {
    audio_port_device_ext legacy;
    legacy.hw_module = VALUE_OR_RETURN(
            aidl2legacy_int32_t_audio_module_handle_t(aidlSys.hwModule));
    RETURN_IF_ERROR(aidl2legacy_AudioDevice_audio_device(
                    aidl.device, &legacy.type, legacy.address));
    legacy.encapsulation_modes = VALUE_OR_RETURN(
            aidl2legacy_AudioEncapsulationMode_mask(aidlSys.encapsulationModes));
    legacy.encapsulation_metadata_types = VALUE_OR_RETURN(
            aidl2legacy_AudioEncapsulationMetadataType_mask(
                    aidlSys.encapsulationMetadataTypes));
    return legacy;
}

status_t legacy2aidl_audio_port_device_ext_AudioPortDeviceExt(
        const audio_port_device_ext& legacy,
        AudioPortDeviceExt* aidl, media::AudioPortDeviceExtSys* aidlDeviceExt) {
    aidlDeviceExt->hwModule = VALUE_OR_RETURN_STATUS(
            legacy2aidl_audio_module_handle_t_int32_t(legacy.hw_module));
    aidl->device = VALUE_OR_RETURN_STATUS(
            legacy2aidl_audio_device_AudioDevice(legacy.type, legacy.address));
    aidlDeviceExt->encapsulationModes = VALUE_OR_RETURN_STATUS(
            legacy2aidl_AudioEncapsulationMode_mask(legacy.encapsulation_modes));
    aidlDeviceExt->encapsulationMetadataTypes = VALUE_OR_RETURN_STATUS(
            legacy2aidl_AudioEncapsulationMetadataType_mask(legacy.encapsulation_metadata_types));
    return OK;
}

// This type is unnamed in the original definition, thus we name it here.
using audio_port_v7_ext = decltype(audio_port_v7::ext);

ConversionResult<audio_port_v7_ext> aidl2legacy_AudioPortExt_audio_port_v7_ext(
        const AudioPortExt& aidl, media::AudioPortType type,
        const media::AudioPortExtSys& aidlSys) {
    audio_port_v7_ext legacy;
    switch (type) {
        case media::AudioPortType::NONE:
            // Just verify that the union is empty.
            VALUE_OR_RETURN(UNION_GET(aidl, unspecified));
            return legacy;
        case media::AudioPortType::DEVICE:
            legacy.device = VALUE_OR_RETURN(
                    aidl2legacy_AudioPortDeviceExt_audio_port_device_ext(
                            VALUE_OR_RETURN(UNION_GET(aidl, device)),
                            VALUE_OR_RETURN(UNION_GET(aidlSys, device))));
            return legacy;
        case media::AudioPortType::MIX:
            legacy.mix = VALUE_OR_RETURN(
                    aidl2legacy_AudioPortMixExt_audio_port_mix_ext(
                            VALUE_OR_RETURN(UNION_GET(aidl, mix)),
                            VALUE_OR_RETURN(UNION_GET(aidlSys, mix))));
            return legacy;
        case media::AudioPortType::SESSION:
            legacy.session = VALUE_OR_RETURN(
                    aidl2legacy_int32_t_audio_port_session_ext(
                            VALUE_OR_RETURN(UNION_GET(aidlSys, session))));
            return legacy;

    }
    LOG_ALWAYS_FATAL("Shouldn't get here"); // with -Werror,-Wswitch may compile-time fail
}

status_t legacy2aidl_AudioPortExt(
        const audio_port_v7_ext& legacy, audio_port_type_t type,
        AudioPortExt* aidl, media::AudioPortExtSys* aidlSys) {
    switch (type) {
        case AUDIO_PORT_TYPE_NONE:
            UNION_SET(*aidl, unspecified, false);
            UNION_SET(*aidlSys, unspecified, false);
            return OK;
        case AUDIO_PORT_TYPE_DEVICE: {
            AudioPortDeviceExt device;
            media::AudioPortDeviceExtSys deviceSys;
            RETURN_STATUS_IF_ERROR(
                    legacy2aidl_audio_port_device_ext_AudioPortDeviceExt(
                            legacy.device, &device, &deviceSys));
            UNION_SET(*aidl, device, device);
            UNION_SET(*aidlSys, device, deviceSys);
            return OK;
        }
        case AUDIO_PORT_TYPE_MIX: {
            AudioPortMixExt mix;
            media::AudioPortMixExtSys mixSys;
            RETURN_STATUS_IF_ERROR(
                    legacy2aidl_audio_port_mix_ext_AudioPortMixExt(
                            legacy.mix, &mix, &mixSys));
            UNION_SET(*aidl, mix, mix);
            UNION_SET(*aidlSys, mix, mixSys);
            return OK;
        }
        case AUDIO_PORT_TYPE_SESSION:
            UNION_SET(*aidl, unspecified, false);
            UNION_SET(*aidlSys, session, VALUE_OR_RETURN_STATUS(
                            legacy2aidl_audio_port_session_ext_int32_t(legacy.session)));
            return OK;
    }
    LOG_ALWAYS_FATAL("Shouldn't get here"); // with -Werror,-Wswitch may compile-time fail
}

ConversionResult<audio_port_v7>
aidl2legacy_AudioPort_audio_port_v7(const media::AudioPortFw& aidl) {
    audio_port_v7 legacy;
    legacy.id = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_port_handle_t(aidl.hal.id));
    legacy.role = VALUE_OR_RETURN(aidl2legacy_AudioPortRole_audio_port_role_t(aidl.sys.role));
    legacy.type = VALUE_OR_RETURN(aidl2legacy_AudioPortType_audio_port_type_t(aidl.sys.type));
    RETURN_IF_ERROR(aidl2legacy_string(aidl.hal.name, legacy.name, sizeof(legacy.name)));

    if (aidl.hal.profiles.size() > std::size(legacy.audio_profiles)) {
        return unexpected(BAD_VALUE);
    }
    const bool isInput =
            VALUE_OR_RETURN(direction(aidl.sys.role, aidl.sys.type)) == Direction::INPUT;
    RETURN_IF_ERROR(convertRange(
                    aidl.hal.profiles.begin(), aidl.hal.profiles.end(), legacy.audio_profiles,
                    [isInput](const AudioProfile& p) {
                        return aidl2legacy_AudioProfile_audio_profile(p, isInput);
                    }));
    legacy.num_audio_profiles = aidl.hal.profiles.size();

    if (aidl.hal.extraAudioDescriptors.size() > std::size(legacy.extra_audio_descriptors)) {
        return unexpected(BAD_VALUE);
    }
    RETURN_IF_ERROR(
            convertRange(
                    aidl.hal.extraAudioDescriptors.begin(), aidl.hal.extraAudioDescriptors.end(),
                    legacy.extra_audio_descriptors,
                    aidl2legacy_ExtraAudioDescriptor_audio_extra_audio_descriptor));
    legacy.num_extra_audio_descriptors = aidl.hal.extraAudioDescriptors.size();

    if (aidl.hal.gains.size() > std::size(legacy.gains)) {
        return unexpected(BAD_VALUE);
    }
    RETURN_IF_ERROR(convertRange(aidl.hal.gains.begin(), aidl.hal.gains.end(), legacy.gains,
                                 [isInput](const AudioGain& g) {
                                     return aidl2legacy_AudioGain_audio_gain(g, isInput);
                                 }));
    legacy.num_gains = aidl.hal.gains.size();

    legacy.active_config = VALUE_OR_RETURN(
            aidl2legacy_AudioPortConfig_audio_port_config(aidl.sys.activeConfig));
    legacy.ext = VALUE_OR_RETURN(
            aidl2legacy_AudioPortExt_audio_port_v7_ext(aidl.hal.ext, aidl.sys.type, aidl.sys.ext));
    return legacy;
}

ConversionResult<media::AudioPortFw>
legacy2aidl_audio_port_v7_AudioPort(const audio_port_v7& legacy) {
    media::AudioPortFw aidl;
    aidl.hal.id = VALUE_OR_RETURN(legacy2aidl_audio_port_handle_t_int32_t(legacy.id));
    aidl.sys.role = VALUE_OR_RETURN(legacy2aidl_audio_port_role_t_AudioPortRole(legacy.role));
    aidl.sys.type = VALUE_OR_RETURN(legacy2aidl_audio_port_type_t_AudioPortType(legacy.type));
    aidl.hal.name = VALUE_OR_RETURN(legacy2aidl_string(legacy.name, sizeof(legacy.name)));

    if (legacy.num_audio_profiles > std::size(legacy.audio_profiles)) {
        return unexpected(BAD_VALUE);
    }
    const bool isInput = VALUE_OR_RETURN(direction(legacy.role, legacy.type)) == Direction::INPUT;
    RETURN_IF_ERROR(
            convertRange(legacy.audio_profiles, legacy.audio_profiles + legacy.num_audio_profiles,
                         std::back_inserter(aidl.hal.profiles),
                         [isInput](const audio_profile& p) {
                             return legacy2aidl_audio_profile_AudioProfile(p, isInput);
                         }));

    if (legacy.num_extra_audio_descriptors > std::size(legacy.extra_audio_descriptors)) {
        return unexpected(BAD_VALUE);
    }
    aidl.sys.profiles.resize(legacy.num_audio_profiles);
    RETURN_IF_ERROR(
            convertRange(legacy.extra_audio_descriptors,
                    legacy.extra_audio_descriptors + legacy.num_extra_audio_descriptors,
                    std::back_inserter(aidl.hal.extraAudioDescriptors),
                    legacy2aidl_audio_extra_audio_descriptor_ExtraAudioDescriptor));

    if (legacy.num_gains > std::size(legacy.gains)) {
        return unexpected(BAD_VALUE);
    }
    RETURN_IF_ERROR(
            convertRange(legacy.gains, legacy.gains + legacy.num_gains,
                         std::back_inserter(aidl.hal.gains),
                         [isInput](const audio_gain& g) {
                             return legacy2aidl_audio_gain_AudioGain(g, isInput);
                         }));
    aidl.sys.gains.resize(legacy.num_gains);

    aidl.sys.activeConfig = VALUE_OR_RETURN(
            legacy2aidl_audio_port_config_AudioPortConfig(legacy.active_config));
    aidl.sys.activeConfig.hal.portId = aidl.hal.id;
    RETURN_IF_ERROR(
            legacy2aidl_AudioPortExt(legacy.ext, legacy.type, &aidl.hal.ext, &aidl.sys.ext));
    return aidl;
}

ConversionResult<audio_unique_id_use_t>
aidl2legacy_AudioUniqueIdUse_audio_unique_id_use_t(media::AudioUniqueIdUse aidl) {
    switch (aidl) {
        case media::AudioUniqueIdUse::UNSPECIFIED:
            return AUDIO_UNIQUE_ID_USE_UNSPECIFIED;
        case media::AudioUniqueIdUse::SESSION:
            return AUDIO_UNIQUE_ID_USE_SESSION;
        case media::AudioUniqueIdUse::MODULE:
            return AUDIO_UNIQUE_ID_USE_MODULE;
        case media::AudioUniqueIdUse::EFFECT:
            return AUDIO_UNIQUE_ID_USE_EFFECT;
        case media::AudioUniqueIdUse::PATCH:
            return AUDIO_UNIQUE_ID_USE_PATCH;
        case media::AudioUniqueIdUse::OUTPUT:
            return AUDIO_UNIQUE_ID_USE_OUTPUT;
        case media::AudioUniqueIdUse::INPUT:
            return AUDIO_UNIQUE_ID_USE_INPUT;
        case media::AudioUniqueIdUse::CLIENT:
            return AUDIO_UNIQUE_ID_USE_CLIENT;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<media::AudioUniqueIdUse>
legacy2aidl_audio_unique_id_use_t_AudioUniqueIdUse(audio_unique_id_use_t legacy) {
    switch (legacy) {
        case AUDIO_UNIQUE_ID_USE_UNSPECIFIED:
            return media::AudioUniqueIdUse::UNSPECIFIED;
        case AUDIO_UNIQUE_ID_USE_SESSION:
            return media::AudioUniqueIdUse::SESSION;
        case AUDIO_UNIQUE_ID_USE_MODULE:
            return media::AudioUniqueIdUse::MODULE;
        case AUDIO_UNIQUE_ID_USE_EFFECT:
            return media::AudioUniqueIdUse::EFFECT;
        case AUDIO_UNIQUE_ID_USE_PATCH:
            return media::AudioUniqueIdUse::PATCH;
        case AUDIO_UNIQUE_ID_USE_OUTPUT:
            return media::AudioUniqueIdUse::OUTPUT;
        case AUDIO_UNIQUE_ID_USE_INPUT:
            return media::AudioUniqueIdUse::INPUT;
        case AUDIO_UNIQUE_ID_USE_CLIENT:
            return media::AudioUniqueIdUse::CLIENT;
        case AUDIO_UNIQUE_ID_USE_MAX:
            break;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<volume_group_t>
aidl2legacy_int32_t_volume_group_t(int32_t aidl) {
    return convertReinterpret<volume_group_t>(aidl);
}

ConversionResult<int32_t>
legacy2aidl_volume_group_t_int32_t(volume_group_t legacy) {
    return convertReinterpret<int32_t>(legacy);
}

ConversionResult<product_strategy_t>
aidl2legacy_int32_t_product_strategy_t(int32_t aidl) {
    return convertReinterpret<product_strategy_t>(aidl);
}

ConversionResult<int32_t>
legacy2aidl_product_strategy_t_int32_t(product_strategy_t legacy) {
    return convertReinterpret<int32_t>(legacy);
}

ConversionResult<audio_dual_mono_mode_t>
aidl2legacy_AudioDualMonoMode_audio_dual_mono_mode_t(media::AudioDualMonoMode aidl) {
    switch (aidl) {
        case media::AudioDualMonoMode::OFF:
            return AUDIO_DUAL_MONO_MODE_OFF;
        case media::AudioDualMonoMode::LR:
            return AUDIO_DUAL_MONO_MODE_LR;
        case media::AudioDualMonoMode::LL:
            return AUDIO_DUAL_MONO_MODE_LL;
        case media::AudioDualMonoMode::RR:
            return AUDIO_DUAL_MONO_MODE_RR;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<media::AudioDualMonoMode>
legacy2aidl_audio_dual_mono_mode_t_AudioDualMonoMode(audio_dual_mono_mode_t legacy) {
    switch (legacy) {
        case AUDIO_DUAL_MONO_MODE_OFF:
            return media::AudioDualMonoMode::OFF;
        case AUDIO_DUAL_MONO_MODE_LR:
            return media::AudioDualMonoMode::LR;
        case AUDIO_DUAL_MONO_MODE_LL:
            return media::AudioDualMonoMode::LL;
        case AUDIO_DUAL_MONO_MODE_RR:
            return media::AudioDualMonoMode::RR;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<audio_timestretch_fallback_mode_t>
aidl2legacy_int32_t_audio_timestretch_fallback_mode_t(int32_t aidl) {
    return convertReinterpret<audio_timestretch_fallback_mode_t>(aidl);
}

ConversionResult<int32_t>
legacy2aidl_audio_timestretch_fallback_mode_t_int32_t(audio_timestretch_fallback_mode_t legacy) {
    return convertReinterpret<int32_t>(legacy);
}

ConversionResult<audio_timestretch_stretch_mode_t>
aidl2legacy_int32_t_audio_timestretch_stretch_mode_t(int32_t aidl) {
    return convertReinterpret<audio_timestretch_stretch_mode_t>(aidl);
}

ConversionResult<int32_t>
legacy2aidl_audio_timestretch_stretch_mode_t_int32_t(audio_timestretch_stretch_mode_t legacy) {
    return convertReinterpret<int32_t>(legacy);
}

ConversionResult<audio_playback_rate_t>
aidl2legacy_AudioPlaybackRate_audio_playback_rate_t(const media::AudioPlaybackRate& aidl) {
    audio_playback_rate_t legacy;
    legacy.mSpeed = aidl.speed;
    legacy.mPitch = aidl.pitch;
    legacy.mFallbackMode = VALUE_OR_RETURN(
            aidl2legacy_int32_t_audio_timestretch_fallback_mode_t(aidl.fallbackMode));
    legacy.mStretchMode = VALUE_OR_RETURN(
            aidl2legacy_int32_t_audio_timestretch_stretch_mode_t(aidl.stretchMode));
    return legacy;
}

ConversionResult<media::AudioPlaybackRate>
legacy2aidl_audio_playback_rate_t_AudioPlaybackRate(const audio_playback_rate_t& legacy) {
    media::AudioPlaybackRate aidl;
    aidl.speed = legacy.mSpeed;
    aidl.pitch = legacy.mPitch;
    aidl.fallbackMode = VALUE_OR_RETURN(
            legacy2aidl_audio_timestretch_fallback_mode_t_int32_t(legacy.mFallbackMode));
    aidl.stretchMode = VALUE_OR_RETURN(
            legacy2aidl_audio_timestretch_stretch_mode_t_int32_t(legacy.mStretchMode));
    return aidl;
}

ConversionResult<TrackSecondaryOutputInfoPair>
aidl2legacy_TrackSecondaryOutputInfo_TrackSecondaryOutputInfoPair(
        const media::TrackSecondaryOutputInfo& aidl) {
    TrackSecondaryOutputInfoPair trackSecondaryOutputInfoPair;
    trackSecondaryOutputInfoPair.first =
            VALUE_OR_RETURN(aidl2legacy_int32_t_audio_port_handle_t(aidl.portId));
    trackSecondaryOutputInfoPair.second =
            VALUE_OR_RETURN(convertContainer<std::vector<audio_port_handle_t>>(
                    aidl.secondaryOutputIds, aidl2legacy_int32_t_audio_io_handle_t));
    return trackSecondaryOutputInfoPair;
}

ConversionResult<media::TrackSecondaryOutputInfo>
legacy2aidl_TrackSecondaryOutputInfoPair_TrackSecondaryOutputInfo(
        const TrackSecondaryOutputInfoPair& legacy) {
    media::TrackSecondaryOutputInfo trackSecondaryOutputInfo;
    trackSecondaryOutputInfo.portId =
            VALUE_OR_RETURN(legacy2aidl_audio_port_handle_t_int32_t(legacy.first));
    trackSecondaryOutputInfo.secondaryOutputIds =
            VALUE_OR_RETURN(convertContainer<std::vector<int32_t>>(
                    legacy.second, legacy2aidl_audio_io_handle_t_int32_t));
    return trackSecondaryOutputInfo;
}

ConversionResult<audio_direct_mode_t>
aidl2legacy_AudioDirectMode_audio_direct_mode_t(media::AudioDirectMode aidl) {
    switch (aidl) {
        case media::AudioDirectMode::NONE:
            return AUDIO_DIRECT_NOT_SUPPORTED;
        case media::AudioDirectMode::OFFLOAD:
            return AUDIO_DIRECT_OFFLOAD_SUPPORTED;
        case media::AudioDirectMode::OFFLOAD_GAPLESS:
            return AUDIO_DIRECT_OFFLOAD_GAPLESS_SUPPORTED;
        case media::AudioDirectMode::BITSTREAM:
            return AUDIO_DIRECT_BITSTREAM_SUPPORTED;
    }
    return unexpected(BAD_VALUE);
}
ConversionResult<media::AudioDirectMode>
legacy2aidl_audio_direct_mode_t_AudioDirectMode(audio_direct_mode_t legacy) {
    switch (legacy) {
        case AUDIO_DIRECT_NOT_SUPPORTED:
            return media::AudioDirectMode::NONE;
        case AUDIO_DIRECT_OFFLOAD_SUPPORTED:
            return media::AudioDirectMode::OFFLOAD;
        case AUDIO_DIRECT_OFFLOAD_GAPLESS_SUPPORTED:
            return media::AudioDirectMode::OFFLOAD_GAPLESS;
        case AUDIO_DIRECT_BITSTREAM_SUPPORTED:
            return media::AudioDirectMode::BITSTREAM;
    }
    return unexpected(BAD_VALUE);
}

ConversionResult<audio_direct_mode_t> aidl2legacy_int32_t_audio_direct_mode_t_mask(int32_t aidl) {
    using LegacyMask = std::underlying_type_t<audio_direct_mode_t>;

    LegacyMask converted = VALUE_OR_RETURN(
            (convertBitmask<LegacyMask, int32_t, audio_direct_mode_t, media::AudioDirectMode>(
                    aidl, aidl2legacy_AudioDirectMode_audio_direct_mode_t,
                    indexToEnum_index<media::AudioDirectMode>,
                    enumToMask_bitmask<LegacyMask, audio_direct_mode_t>)));
    return static_cast<audio_direct_mode_t>(converted);
}
ConversionResult<int32_t> legacy2aidl_audio_direct_mode_t_int32_t_mask(audio_direct_mode_t legacy) {
    using LegacyMask = std::underlying_type_t<audio_direct_mode_t>;

    LegacyMask legacyMask = static_cast<LegacyMask>(legacy);
    return convertBitmask<int32_t, LegacyMask, media::AudioDirectMode, audio_direct_mode_t>(
            legacyMask, legacy2aidl_audio_direct_mode_t_AudioDirectMode,
            indexToEnum_bitmask<audio_direct_mode_t>,
            enumToMask_index<int32_t, media::AudioDirectMode>);
}

ConversionResult<audio_latency_mode_t>
aidl2legacy_LatencyMode_audio_latency_mode_t(media::LatencyMode aidl) {
    switch (aidl) {
        case media::LatencyMode::FREE:
            return AUDIO_LATENCY_MODE_FREE;
        case media::LatencyMode::LOW:
            return AUDIO_LATENCY_MODE_LOW;
    }
    return unexpected(BAD_VALUE);
}
ConversionResult<media::LatencyMode>
legacy2aidl_audio_latency_mode_t_LatencyMode(audio_latency_mode_t legacy) {
    switch (legacy) {
        case AUDIO_LATENCY_MODE_FREE:
            return media::LatencyMode::FREE;
        case AUDIO_LATENCY_MODE_LOW:
            return media::LatencyMode::LOW;
    }
    return unexpected(BAD_VALUE);
}
}  // namespace android