// WARNING: This file is machine generated by fidlgen.

// fidl_experiment = no_optional_structs
// fidl_experiment = transitional_allow_list
// fidl_experiment = unknown_interactions
// fidl_experiment = unknown_interactions_mandate

#![warn(clippy::all)]
#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]

use {
    bitflags::bitflags,
    fidl::{
        client::QueryResponseFut,
        endpoints::{ControlHandle as _, Responder as _},
    },
    fuchsia_zircon_status as zx_status,
    futures::future::{self, MaybeDone, TryFutureExt},
};

#[cfg(target_os = "fuchsia")]
use fuchsia_zircon as zx;

/// Common error code used across policies.
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
#[repr(u32)]
pub enum Error {
    /// Generic internal failure.
    Failed = 1,
    /// The specified policy ID is not known.
    ///
    /// This may happen if another client removed a policy between a Get call
    /// and a RemovePolicy call.
    UnknownPolicy = 2,
    /// The specified policy contradicts an existing policy.
    ///
    /// This may happen if another client added a policy between a Get call
    /// and an AddPolicy call.
    InvalidPolicy = 3,
}

impl Error {
    #[inline]
    pub fn from_primitive(prim: u32) -> Option<Self> {
        match prim {
            1 => Some(Self::Failed),
            2 => Some(Self::UnknownPolicy),
            3 => Some(Self::InvalidPolicy),
            _ => None,
        }
    }

    #[inline]
    pub const fn into_primitive(self) -> u32 {
        self as u32
    }

    #[deprecated = "Strict enums should not use `is_unknown`"]
    #[inline]
    pub fn is_unknown(&self) -> bool {
        false
    }
}

/// Possible transforms for a policy target.
///
/// A transform is an operation that is applied to a policy property when the
/// fuchsia.settings.Audio API is used. Multiple transforms of the same time can
/// be active for a single property.
#[derive(Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
#[repr(u8)]
pub enum Transform {
    /// Limits the maximum value of an audio stream to a certain level.
    ///
    /// Max volume limits are transparent to clients of fuchsia.settings.Audio.
    /// Clients will always be able to set the volume to 1.0 (max) to prevent
    /// user confusion about not being able to set the volume to max. The
    /// internal volume, which is communicated to AudioCore to set the true
    /// volume level, will always be clamped to the specified maximum.
    ///
    /// Externally, the volume percentage will always be a percentage of the max
    /// allowed by policy. For example, if the max limit is set to 0.8, a client
    /// setting the volume to 1.0 translates to 0.8 internally. An external
    /// volume of 0.5 would be scaled to 0.4 internally.
    ///
    /// If a min volume limit is present, the minimum external volume will be
    /// the min volume limit divided by the max volume limit. For example, if
    /// the max volume limit is 0.8 and the min volume limit is 0.2, the lowest
    /// possible external volume is 0.25, since 0.2 is 25% of 0.8. The min range
    /// is not transparent to clients to prevent the confusion of volume being
    /// at 0% but still being able to hear audio.
    Max = 1,
    /// Limits the minimum value of an audio stream to a certain level.
    ///
    /// If the volume is below the specified minimum level when the policy is
    /// added, it will automatically be raised to the specified minimum. Calls
    /// to set the volume below the minimum level will not fail, but the actual
    /// volume will stay above the specified minimum level.
    ///
    /// Note that the minimum volume limit is a limit on the internal "true"
    /// volume level. If a maximum volume policy is set, the minimum that
    /// clients of fuchsia.settings.Audio will see is higher. See the
    /// documentation of the MAX volume transform for more information.
    Min = 2,
}

impl Transform {
    #[inline]
    pub fn from_primitive(prim: u8) -> Option<Self> {
        match prim {
            1 => Some(Self::Max),
            2 => Some(Self::Min),
            _ => None,
        }
    }

    #[inline]
    pub const fn into_primitive(self) -> u8 {
        self as u8
    }

    #[deprecated = "Strict enums should not use `is_unknown`"]
    #[inline]
    pub fn is_unknown(&self) -> bool {
        false
    }
}

#[derive(Clone, Debug, PartialEq)]
pub struct VolumePolicyControllerAddPolicyRequest {
    pub target: Target,
    pub parameters: PolicyParameters,
}

impl fidl::Persistable for VolumePolicyControllerAddPolicyRequest {}

#[derive(Clone, Debug, PartialEq)]
pub struct VolumePolicyControllerGetPropertiesResponse {
    pub properties: Vec<Property>,
}

impl fidl::Persistable for VolumePolicyControllerGetPropertiesResponse {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[repr(C)]
pub struct VolumePolicyControllerRemovePolicyRequest {
    pub policy_id: u32,
}

impl fidl::Persistable for VolumePolicyControllerRemovePolicyRequest {}

#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[repr(C)]
pub struct VolumePolicyControllerAddPolicyResponse {
    pub policy_id: u32,
}

impl fidl::Persistable for VolumePolicyControllerAddPolicyResponse {}

/// Definition for a policy that is applied to the fuchsia.settings.Audio API.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct Policy {
    /// Unique identifier for this policy.
    ///
    /// Returned from AddPolicy and also used by RemovePolicy.
    pub policy_id: Option<u32>,
    /// Parameters for this policy.
    pub parameters: Option<PolicyParameters>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for Policy {}

/// A controllable property of the fuchsia.settings.Audio API that can have
/// transforms applied to it.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct Property {
    /// Unique aspect of settings that this property controls.
    ///
    /// Only one property may control any given target.
    pub target: Option<Target>,
    /// List of available transform types for this property.
    pub available_transforms: Option<Vec<Transform>>,
    /// List of active policies for this property.
    pub active_policies: Option<Vec<Policy>>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for Property {}

#[derive(Clone, Debug, Default, PartialEq)]
pub struct Volume {
    /// A volume between 0.0 and 1.0 inclusive.
    pub volume: Option<f32>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Persistable for Volume {}

/// Specifies the type of policy transform and its arguments.
///
/// The chosen union field implies the type of transform that the arguments
/// apply to.
#[derive(Clone, Debug, PartialEq)]
pub enum PolicyParameters {
    /// This parameter should be included for the MIN transform and specifies
    /// the volume level to clamp the audio stream to.
    Min(Volume),
    /// This parameter should be included for the MAX transform and specifies
    /// the volume level to clamp the audio stream to.
    Max(Volume),
}

impl PolicyParameters {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::Min(_) => 1,
            Self::Max(_) => 2,
        }
    }

    #[deprecated = "Strict unions should not use `is_unknown`"]
    #[inline]
    pub fn is_unknown(&self) -> bool {
        false
    }
}

impl fidl::Persistable for PolicyParameters {}

/// Specifies what aspect of the settings a property controls.
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub enum Target {
    /// An audio stream that can have policies applied to it.
    Stream(fidl_fuchsia_media::AudioRenderUsage),
}

impl Target {
    #[inline]
    pub fn ordinal(&self) -> u64 {
        match *self {
            Self::Stream(_) => 1,
        }
    }

    #[deprecated = "Strict unions should not use `is_unknown`"]
    #[inline]
    pub fn is_unknown(&self) -> bool {
        false
    }
}

impl fidl::Persistable for Target {}

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct VolumePolicyControllerMarker;

impl fidl::endpoints::ProtocolMarker for VolumePolicyControllerMarker {
    type Proxy = VolumePolicyControllerProxy;
    type RequestStream = VolumePolicyControllerRequestStream;
    const DEBUG_NAME: &'static str = "fuchsia.settings.policy.VolumePolicyController";
}
impl fidl::endpoints::DiscoverableProtocolMarker for VolumePolicyControllerMarker {}
pub type VolumePolicyControllerAddPolicyResult = Result<u32, Error>;
pub type VolumePolicyControllerRemovePolicyResult = Result<(), Error>;

pub trait VolumePolicyControllerProxyInterface: Send + Sync {
    type GetPropertiesResponseFut: std::future::Future<Output = Result<Vec<Property>, fidl::Error>>
        + Send;
    fn r#get_properties(&self) -> Self::GetPropertiesResponseFut;
    type AddPolicyResponseFut: std::future::Future<Output = Result<VolumePolicyControllerAddPolicyResult, fidl::Error>>
        + Send;
    fn r#add_policy(
        &self,
        target: &Target,
        parameters: &PolicyParameters,
    ) -> Self::AddPolicyResponseFut;
    type RemovePolicyResponseFut: std::future::Future<Output = Result<VolumePolicyControllerRemovePolicyResult, fidl::Error>>
        + Send;
    fn r#remove_policy(&self, policy_id: u32) -> Self::RemovePolicyResponseFut;
}

#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct VolumePolicyControllerSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl VolumePolicyControllerSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name =
            <VolumePolicyControllerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// Waits until an event arrives and returns it. It is safe for other
    /// threads to make concurrent requests while waiting for an event.
    pub fn wait_for_event(
        &self,
        deadline: zx::Time,
    ) -> Result<VolumePolicyControllerEvent, fidl::Error> {
        VolumePolicyControllerEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Gets a list of volume policy properties, including possible transforms
    /// and active policies for the property.
    pub fn r#get_properties(&self, ___deadline: zx::Time) -> Result<Vec<Property>, fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            VolumePolicyControllerGetPropertiesResponse,
        >(
            (),
            0x5891baf0558f47b9,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.properties)
    }

    /// Adds a policy for the given target.
    ///
    /// Returns a policy_id for the added policy, which can be used to remove
    /// the policy with RemovePolicy.
    ///
    /// If the policy being added contradicts an existing policy, the add
    /// call will return an error. An example would be specifying a max volume
    /// for a stream that is lower than an existing min volume.
    ///
    /// If the transform specified in the PolicyParameters is not enumerated in
    /// the available_transforms of the policy property, the connection will be
    /// closed.
    ///
    /// Adding a policy will immediately adjust the audio setting values if they
    /// don't yet conform to the policy, such as reducing the volume if it's
    /// greater than a specified maximum volume.
    pub fn r#add_policy(
        &self,
        mut target: &Target,
        mut parameters: &PolicyParameters,
        ___deadline: zx::Time,
    ) -> Result<VolumePolicyControllerAddPolicyResult, fidl::Error> {
        let _response = self.client.send_query::<
            VolumePolicyControllerAddPolicyRequest,
            fidl::encoding::ResultType<VolumePolicyControllerAddPolicyResponse, Error>,
        >(
            (target, parameters,),
            0x1c4b77280be0287f,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x.policy_id))
    }

    /// Removes a policy with the given policy id.
    ///
    /// Any client of this API can remove policies set by any other client.
    pub fn r#remove_policy(
        &self,
        mut policy_id: u32,
        ___deadline: zx::Time,
    ) -> Result<VolumePolicyControllerRemovePolicyResult, fidl::Error> {
        let _response = self.client.send_query::<
            VolumePolicyControllerRemovePolicyRequest,
            fidl::encoding::ResultType<fidl::encoding::EmptyStruct, Error>,
        >(
            (policy_id,),
            0x15c5df9d60bdd3a,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x))
    }
}

#[derive(Debug, Clone)]
pub struct VolumePolicyControllerProxy {
    client: fidl::client::Client,
}

impl fidl::endpoints::Proxy for VolumePolicyControllerProxy {
    type Protocol = VolumePolicyControllerMarker;

    fn from_channel(inner: fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl VolumePolicyControllerProxy {
    /// Create a new Proxy for fuchsia.settings.policy/VolumePolicyController.
    pub fn new(channel: fidl::AsyncChannel) -> Self {
        let protocol_name =
            <VolumePolicyControllerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> VolumePolicyControllerEventStream {
        VolumePolicyControllerEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Gets a list of volume policy properties, including possible transforms
    /// and active policies for the property.
    pub fn r#get_properties(&self) -> fidl::client::QueryResponseFut<Vec<Property>> {
        VolumePolicyControllerProxyInterface::r#get_properties(self)
    }

    /// Adds a policy for the given target.
    ///
    /// Returns a policy_id for the added policy, which can be used to remove
    /// the policy with RemovePolicy.
    ///
    /// If the policy being added contradicts an existing policy, the add
    /// call will return an error. An example would be specifying a max volume
    /// for a stream that is lower than an existing min volume.
    ///
    /// If the transform specified in the PolicyParameters is not enumerated in
    /// the available_transforms of the policy property, the connection will be
    /// closed.
    ///
    /// Adding a policy will immediately adjust the audio setting values if they
    /// don't yet conform to the policy, such as reducing the volume if it's
    /// greater than a specified maximum volume.
    pub fn r#add_policy(
        &self,
        mut target: &Target,
        mut parameters: &PolicyParameters,
    ) -> fidl::client::QueryResponseFut<VolumePolicyControllerAddPolicyResult> {
        VolumePolicyControllerProxyInterface::r#add_policy(self, target, parameters)
    }

    /// Removes a policy with the given policy id.
    ///
    /// Any client of this API can remove policies set by any other client.
    pub fn r#remove_policy(
        &self,
        mut policy_id: u32,
    ) -> fidl::client::QueryResponseFut<VolumePolicyControllerRemovePolicyResult> {
        VolumePolicyControllerProxyInterface::r#remove_policy(self, policy_id)
    }
}

impl VolumePolicyControllerProxyInterface for VolumePolicyControllerProxy {
    type GetPropertiesResponseFut = fidl::client::QueryResponseFut<Vec<Property>>;
    fn r#get_properties(&self) -> Self::GetPropertiesResponseFut {
        fn _decode(
            mut _buf: Result<fidl::MessageBufEtc, fidl::Error>,
        ) -> Result<Vec<Property>, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                VolumePolicyControllerGetPropertiesResponse,
                0x5891baf0558f47b9,
            >(_buf?)?;
            Ok(_response.properties)
        }
        self.client.send_query_and_decode::<fidl::encoding::EmptyPayload, Vec<Property>>(
            (),
            0x5891baf0558f47b9,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type AddPolicyResponseFut =
        fidl::client::QueryResponseFut<VolumePolicyControllerAddPolicyResult>;
    fn r#add_policy(
        &self,
        mut target: &Target,
        mut parameters: &PolicyParameters,
    ) -> Self::AddPolicyResponseFut {
        fn _decode(
            mut _buf: Result<fidl::MessageBufEtc, fidl::Error>,
        ) -> Result<VolumePolicyControllerAddPolicyResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<VolumePolicyControllerAddPolicyResponse, Error>,
                0x1c4b77280be0287f,
            >(_buf?)?;
            Ok(_response.map(|x| x.policy_id))
        }
        self.client.send_query_and_decode::<
            VolumePolicyControllerAddPolicyRequest,
            VolumePolicyControllerAddPolicyResult,
        >(
            (target, parameters,),
            0x1c4b77280be0287f,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type RemovePolicyResponseFut =
        fidl::client::QueryResponseFut<VolumePolicyControllerRemovePolicyResult>;
    fn r#remove_policy(&self, mut policy_id: u32) -> Self::RemovePolicyResponseFut {
        fn _decode(
            mut _buf: Result<fidl::MessageBufEtc, fidl::Error>,
        ) -> Result<VolumePolicyControllerRemovePolicyResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<fidl::encoding::EmptyStruct, Error>,
                0x15c5df9d60bdd3a,
            >(_buf?)?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<
            VolumePolicyControllerRemovePolicyRequest,
            VolumePolicyControllerRemovePolicyResult,
        >(
            (policy_id,),
            0x15c5df9d60bdd3a,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

pub struct VolumePolicyControllerEventStream {
    event_receiver: fidl::client::EventReceiver,
}

impl std::marker::Unpin for VolumePolicyControllerEventStream {}

impl futures::stream::FusedStream for VolumePolicyControllerEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for VolumePolicyControllerEventStream {
    type Item = Result<VolumePolicyControllerEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(VolumePolicyControllerEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum VolumePolicyControllerEvent {}

impl VolumePolicyControllerEvent {
    /// Decodes a message buffer as a [`VolumePolicyControllerEvent`].
    fn decode(mut buf: fidl::MessageBufEtc) -> Result<VolumePolicyControllerEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name:
                    <VolumePolicyControllerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.settings.policy/VolumePolicyController.
pub struct VolumePolicyControllerRequestStream {
    inner: std::sync::Arc<fidl::ServeInner>,
    is_terminated: bool,
}

impl std::marker::Unpin for VolumePolicyControllerRequestStream {}

impl futures::stream::FusedStream for VolumePolicyControllerRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for VolumePolicyControllerRequestStream {
    type Protocol = VolumePolicyControllerMarker;
    type ControlHandle = VolumePolicyControllerControlHandle;

    fn from_channel(channel: fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        VolumePolicyControllerControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(self) -> (::std::sync::Arc<fidl::ServeInner>, bool) {
        (self.inner, self.is_terminated)
    }

    fn from_inner(inner: std::sync::Arc<fidl::ServeInner>, is_terminated: bool) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for VolumePolicyControllerRequestStream {
    type Item = Result<VolumePolicyControllerRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled VolumePolicyControllerRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf(|bytes, handles| {
            match this.inner.channel().read_etc(cx, bytes, handles) {
                std::task::Poll::Ready(Ok(())) => {}
                std::task::Poll::Pending => return std::task::Poll::Pending,
                std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                    this.is_terminated = true;
                    return std::task::Poll::Ready(None);
                }
                std::task::Poll::Ready(Err(e)) => {
                    return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(e))))
                }
            }

            // A message has been received from the channel
            let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

            std::task::Poll::Ready(Some(match header.ordinal {
                0x5891baf0558f47b9 => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(fidl::encoding::EmptyPayload);
                    fidl::encoding::Decoder::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                    let control_handle = VolumePolicyControllerControlHandle {
                        inner: this.inner.clone(),
                    };
                    Ok(VolumePolicyControllerRequest::GetProperties {
                        responder: VolumePolicyControllerGetPropertiesResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                0x1c4b77280be0287f => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(VolumePolicyControllerAddPolicyRequest);
                    fidl::encoding::Decoder::decode_into::<VolumePolicyControllerAddPolicyRequest>(&header, _body_bytes, handles, &mut req)?;
                    let control_handle = VolumePolicyControllerControlHandle {
                        inner: this.inner.clone(),
                    };
                    Ok(VolumePolicyControllerRequest::AddPolicy {target: req.target,
parameters: req.parameters,

                        responder: VolumePolicyControllerAddPolicyResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                0x15c5df9d60bdd3a => {
                    header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                    let mut req = fidl::new_empty!(VolumePolicyControllerRemovePolicyRequest);
                    fidl::encoding::Decoder::decode_into::<VolumePolicyControllerRemovePolicyRequest>(&header, _body_bytes, handles, &mut req)?;
                    let control_handle = VolumePolicyControllerControlHandle {
                        inner: this.inner.clone(),
                    };
                    Ok(VolumePolicyControllerRequest::RemovePolicy {policy_id: req.policy_id,

                        responder: VolumePolicyControllerRemovePolicyResponder {
                            control_handle: std::mem::ManuallyDrop::new(control_handle),
                            tx_id: header.tx_id,
                        },
                    })
                }
                _ => Err(fidl::Error::UnknownOrdinal {
                    ordinal: header.ordinal,
                    protocol_name: <VolumePolicyControllerMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                }),
            }))
        })
    }
}

/// Provides access to enumerating and modifying policies for the
/// fuchsia.settings.Audio API.
///
/// Policies are automatically persisted across reboots and take effect again on
/// boot.
#[derive(Debug)]
pub enum VolumePolicyControllerRequest {
    /// Gets a list of volume policy properties, including possible transforms
    /// and active policies for the property.
    GetProperties { responder: VolumePolicyControllerGetPropertiesResponder },
    /// Adds a policy for the given target.
    ///
    /// Returns a policy_id for the added policy, which can be used to remove
    /// the policy with RemovePolicy.
    ///
    /// If the policy being added contradicts an existing policy, the add
    /// call will return an error. An example would be specifying a max volume
    /// for a stream that is lower than an existing min volume.
    ///
    /// If the transform specified in the PolicyParameters is not enumerated in
    /// the available_transforms of the policy property, the connection will be
    /// closed.
    ///
    /// Adding a policy will immediately adjust the audio setting values if they
    /// don't yet conform to the policy, such as reducing the volume if it's
    /// greater than a specified maximum volume.
    AddPolicy {
        target: Target,
        parameters: PolicyParameters,
        responder: VolumePolicyControllerAddPolicyResponder,
    },
    /// Removes a policy with the given policy id.
    ///
    /// Any client of this API can remove policies set by any other client.
    RemovePolicy { policy_id: u32, responder: VolumePolicyControllerRemovePolicyResponder },
}

impl VolumePolicyControllerRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_get_properties(self) -> Option<(VolumePolicyControllerGetPropertiesResponder)> {
        if let VolumePolicyControllerRequest::GetProperties { responder } = self {
            Some((responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_add_policy(
        self,
    ) -> Option<(Target, PolicyParameters, VolumePolicyControllerAddPolicyResponder)> {
        if let VolumePolicyControllerRequest::AddPolicy { target, parameters, responder } = self {
            Some((target, parameters, responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_remove_policy(self) -> Option<(u32, VolumePolicyControllerRemovePolicyResponder)> {
        if let VolumePolicyControllerRequest::RemovePolicy { policy_id, responder } = self {
            Some((policy_id, responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            VolumePolicyControllerRequest::GetProperties { .. } => "get_properties",
            VolumePolicyControllerRequest::AddPolicy { .. } => "add_policy",
            VolumePolicyControllerRequest::RemovePolicy { .. } => "remove_policy",
        }
    }
}

#[derive(Debug, Clone)]
pub struct VolumePolicyControllerControlHandle {
    inner: std::sync::Arc<fidl::ServeInner>,
}

impl fidl::endpoints::ControlHandle for VolumePolicyControllerControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }

    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }

    fn on_closed<'a>(&'a self) -> fidl::OnSignals<'a> {
        self.inner.channel().on_closed()
    }
}

impl VolumePolicyControllerControlHandle {}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct VolumePolicyControllerGetPropertiesResponder {
    control_handle: std::mem::ManuallyDrop<VolumePolicyControllerControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`VolumePolicyControllerControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for VolumePolicyControllerGetPropertiesResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for VolumePolicyControllerGetPropertiesResponder {
    type ControlHandle = VolumePolicyControllerControlHandle;

    fn control_handle(&self) -> &VolumePolicyControllerControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl VolumePolicyControllerGetPropertiesResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut properties: &[Property]) -> Result<(), fidl::Error> {
        let _result = self.send_raw(properties);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(self, mut properties: &[Property]) -> Result<(), fidl::Error> {
        let _result = self.send_raw(properties);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut properties: &[Property]) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<VolumePolicyControllerGetPropertiesResponse>(
            (properties,),
            self.tx_id,
            0x5891baf0558f47b9,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct VolumePolicyControllerAddPolicyResponder {
    control_handle: std::mem::ManuallyDrop<VolumePolicyControllerControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`VolumePolicyControllerControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for VolumePolicyControllerAddPolicyResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for VolumePolicyControllerAddPolicyResponder {
    type ControlHandle = VolumePolicyControllerControlHandle;

    fn control_handle(&self) -> &VolumePolicyControllerControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl VolumePolicyControllerAddPolicyResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<u32, Error>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(
        self,
        mut result: Result<u32, Error>,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<u32, Error>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::ResultType<
            VolumePolicyControllerAddPolicyResponse,
            Error,
        >>(
            result.map(|policy_id| (policy_id,)),
            self.tx_id,
            0x1c4b77280be0287f,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct VolumePolicyControllerRemovePolicyResponder {
    control_handle: std::mem::ManuallyDrop<VolumePolicyControllerControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`VolumePolicyControllerControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for VolumePolicyControllerRemovePolicyResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for VolumePolicyControllerRemovePolicyResponder {
    type ControlHandle = VolumePolicyControllerControlHandle;

    fn control_handle(&self) -> &VolumePolicyControllerControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl VolumePolicyControllerRemovePolicyResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<(), Error>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(self, mut result: Result<(), Error>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<(), Error>) -> Result<(), fidl::Error> {
        self.control_handle
            .inner
            .send::<fidl::encoding::ResultType<fidl::encoding::EmptyStruct, Error>>(
                result,
                self.tx_id,
                0x15c5df9d60bdd3a,
                fidl::encoding::DynamicFlags::empty(),
            )
    }
}

mod internal {
    use super::*;
    unsafe impl fidl::encoding::TypeMarker for Error {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            std::mem::align_of::<u32>()
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            std::mem::size_of::<u32>()
        }

        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            false
        }
    }

    impl fidl::encoding::ValueTypeMarker for Error {
        type Borrowed<'a> = Self;
        #[inline(always)]
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            *value
        }
    }

    unsafe impl fidl::encoding::Encode<Self> for Error {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Self>(offset);
            encoder.write_num(self.into_primitive(), offset);
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for Error {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Failed
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let prim = decoder.read_num::<u32>(offset);

            *self = Self::from_primitive(prim).ok_or(fidl::Error::InvalidEnumValue)?;
            Ok(())
        }
    }
    unsafe impl fidl::encoding::TypeMarker for Transform {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            std::mem::align_of::<u8>()
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            std::mem::size_of::<u8>()
        }

        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            false
        }
    }

    impl fidl::encoding::ValueTypeMarker for Transform {
        type Borrowed<'a> = Self;
        #[inline(always)]
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            *value
        }
    }

    unsafe impl fidl::encoding::Encode<Self> for Transform {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Self>(offset);
            encoder.write_num(self.into_primitive(), offset);
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for Transform {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Max
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let prim = decoder.read_num::<u8>(offset);

            *self = Self::from_primitive(prim).ok_or(fidl::Error::InvalidEnumValue)?;
            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for VolumePolicyControllerAddPolicyRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            32
        }
    }
    impl fidl::encoding::ValueTypeMarker for VolumePolicyControllerAddPolicyRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<VolumePolicyControllerAddPolicyRequest>
        for &VolumePolicyControllerAddPolicyRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerAddPolicyRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<VolumePolicyControllerAddPolicyRequest>::encode(
                (
                    <Target as fidl::encoding::ValueTypeMarker>::borrow(&self.target),
                    <PolicyParameters as fidl::encoding::ValueTypeMarker>::borrow(&self.parameters),
                ),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<Target>, T1: fidl::encoding::Encode<PolicyParameters>>
        fidl::encoding::Encode<VolumePolicyControllerAddPolicyRequest> for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerAddPolicyRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            self.1.encode(encoder, offset + 16, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for VolumePolicyControllerAddPolicyRequest {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                target: fidl::new_empty!(Target),
                parameters: fidl::new_empty!(PolicyParameters),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(Target, &mut self.target, decoder, offset + 0, _depth)?;
            fidl::decode!(PolicyParameters, &mut self.parameters, decoder, offset + 16, _depth)?;
            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for VolumePolicyControllerGetPropertiesResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for VolumePolicyControllerGetPropertiesResponse {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<VolumePolicyControllerGetPropertiesResponse>
        for &VolumePolicyControllerGetPropertiesResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerGetPropertiesResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<VolumePolicyControllerGetPropertiesResponse>::encode(
                (
                    <fidl::encoding::UnboundedVector<Property> as fidl::encoding::ValueTypeMarker>::borrow(&self.properties),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<fidl::encoding::UnboundedVector<Property>>>
        fidl::encoding::Encode<VolumePolicyControllerGetPropertiesResponse> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerGetPropertiesResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for VolumePolicyControllerGetPropertiesResponse {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { properties: fidl::new_empty!(fidl::encoding::UnboundedVector<Property>) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(
                fidl::encoding::UnboundedVector<Property>,
                &mut self.properties,
                decoder,
                offset + 0,
                _depth
            )?;
            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for VolumePolicyControllerRemovePolicyRequest {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            true
        }
    }
    impl fidl::encoding::ValueTypeMarker for VolumePolicyControllerRemovePolicyRequest {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<VolumePolicyControllerRemovePolicyRequest>
        for &VolumePolicyControllerRemovePolicyRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerRemovePolicyRequest>(offset);
            unsafe {
                // Copy the object into the buffer.
                let buf_ptr = encoder.buf.as_mut_ptr().add(offset);
                (buf_ptr as *mut VolumePolicyControllerRemovePolicyRequest).write_unaligned(
                    (self as *const VolumePolicyControllerRemovePolicyRequest).read(),
                );
                // Zero out padding regions. Unlike `fidl_struct_impl_noncopy!`, this must be
                // done second because the memcpy will write garbage to these bytes.
            }
            Ok(())
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<u32>>
        fidl::encoding::Encode<VolumePolicyControllerRemovePolicyRequest> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerRemovePolicyRequest>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for VolumePolicyControllerRemovePolicyRequest {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { policy_id: fidl::new_empty!(u32) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let buf_ptr = unsafe { decoder.buf.as_ptr().add(offset) };
            // Verify that padding bytes are zero.
            // Copy from the buffer into the object.
            unsafe {
                std::ptr::copy_nonoverlapping(buf_ptr, self as *mut Self as *mut u8, 4);
            }
            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for VolumePolicyControllerAddPolicyResponse {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            4
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            4
        }
        #[inline(always)]
        fn encode_is_copy() -> bool {
            true
        }

        #[inline(always)]
        fn decode_is_copy() -> bool {
            true
        }
    }
    impl fidl::encoding::ValueTypeMarker for VolumePolicyControllerAddPolicyResponse {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<VolumePolicyControllerAddPolicyResponse>
        for &VolumePolicyControllerAddPolicyResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerAddPolicyResponse>(offset);
            unsafe {
                // Copy the object into the buffer.
                let buf_ptr = encoder.buf.as_mut_ptr().add(offset);
                (buf_ptr as *mut VolumePolicyControllerAddPolicyResponse).write_unaligned(
                    (self as *const VolumePolicyControllerAddPolicyResponse).read(),
                );
                // Zero out padding regions. Unlike `fidl_struct_impl_noncopy!`, this must be
                // done second because the memcpy will write garbage to these bytes.
            }
            Ok(())
        }
    }
    unsafe impl<T0: fidl::encoding::Encode<u32>>
        fidl::encoding::Encode<VolumePolicyControllerAddPolicyResponse> for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VolumePolicyControllerAddPolicyResponse>(offset);
            // Zero out padding regions. There's no need to apply masks
            // because the unmasked parts will be overwritten by fields.
            // Write the fields.
            self.0.encode(encoder, offset + 0, depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for VolumePolicyControllerAddPolicyResponse {
        #[inline(always)]
        fn new_empty() -> Self {
            Self { policy_id: fidl::new_empty!(u32) }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let buf_ptr = unsafe { decoder.buf.as_ptr().add(offset) };
            // Verify that padding bytes are zero.
            // Copy from the buffer into the object.
            unsafe {
                std::ptr::copy_nonoverlapping(buf_ptr, self as *mut Self as *mut u8, 4);
            }
            Ok(())
        }
    }

    impl Policy {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.parameters {
                return 2;
            }
            if let Some(_) = self.policy_id {
                return 1;
            }
            0
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Policy {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for Policy {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<Policy> for &Policy {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Policy>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // write_out_of_line must not be called with a zero-sized out-of-line block.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;
            if 1 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (1 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<u32>(
                self.policy_id.as_ref().map(<u32 as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 2 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (2 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<PolicyParameters>(
                self.parameters
                    .as_ref()
                    .map(<PolicyParameters as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for Policy {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 1 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <u32 as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.policy_id.get_or_insert_with(|| fidl::new_empty!(u32));
                fidl::decode!(u32, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 2 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <PolicyParameters as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref =
                    self.parameters.get_or_insert_with(|| fidl::new_empty!(PolicyParameters));
                fidl::decode!(PolicyParameters, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    impl Property {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.active_policies {
                return 3;
            }
            if let Some(_) = self.available_transforms {
                return 2;
            }
            if let Some(_) = self.target {
                return 1;
            }
            0
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Property {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for Property {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<Property> for &Property {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Property>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // write_out_of_line must not be called with a zero-sized out-of-line block.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;
            if 1 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (1 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<Target>(
                self.target.as_ref().map(<Target as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 2 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (2 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<fidl::encoding::UnboundedVector<Transform>>(
            self.available_transforms.as_ref().map(<fidl::encoding::UnboundedVector<Transform> as fidl::encoding::ValueTypeMarker>::borrow),
            encoder, offset + cur_offset, depth
        )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 3 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (3 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<fidl::encoding::UnboundedVector<Policy>>(
            self.active_policies.as_ref().map(<fidl::encoding::UnboundedVector<Policy> as fidl::encoding::ValueTypeMarker>::borrow),
            encoder, offset + cur_offset, depth
        )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for Property {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 1 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <Target as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.target.get_or_insert_with(|| fidl::new_empty!(Target));
                fidl::decode!(Target, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 2 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size = <fidl::encoding::UnboundedVector<Transform> as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.available_transforms.get_or_insert_with(|| {
                    fidl::new_empty!(fidl::encoding::UnboundedVector<Transform>)
                });
                fidl::decode!(
                    fidl::encoding::UnboundedVector<Transform>,
                    val_ref,
                    decoder,
                    inner_offset,
                    inner_depth
                )?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 3 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size = <fidl::encoding::UnboundedVector<Policy> as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.active_policies.get_or_insert_with(|| {
                    fidl::new_empty!(fidl::encoding::UnboundedVector<Policy>)
                });
                fidl::decode!(
                    fidl::encoding::UnboundedVector<Policy>,
                    val_ref,
                    decoder,
                    inner_offset,
                    inner_depth
                )?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    impl Volume {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.volume {
                return 1;
            }
            0
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Volume {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for Volume {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<Volume> for &Volume {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Volume>(offset);
            // Vector header
            let max_ordinal: u64 = self.max_ordinal_present();
            encoder.write_num(max_ordinal, offset);
            encoder.write_num(fidl::encoding::ALLOC_PRESENT_U64, offset + 8);
            // write_out_of_line must not be called with a zero-sized out-of-line block.
            if max_ordinal == 0 {
                return Ok(());
            }
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = max_ordinal as usize * envelope_size;
            #[allow(unused_variables)]
            let offset = encoder.out_of_line_offset(bytes_len);
            let mut _prev_end_offset: usize = 0;
            if 1 > max_ordinal {
                return Ok(());
            }

            // Write at offset+(ordinal-1)*envelope_size, since ordinals are one-based and envelopes
            // are envelope_size bytes.
            let cur_offset: usize = (1 - 1) * envelope_size;

            // Zero reserved fields.
            encoder.padding(offset + _prev_end_offset, cur_offset - _prev_end_offset);

            // Safety:
            // - bytes_len is calculated to fit envelope_size*max(member.ordinal).
            // - Since cur_offset is envelope_size*(member.ordinal - 1) and the envelope takes
            //   envelope_size bytes, there is always sufficient room.
            fidl::encoding::encode_in_envelope_optional::<f32>(
                self.volume.as_ref().map(<f32 as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

    impl fidl::encoding::Decode<Self> for Volume {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::default()
        }

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            let len = match fidl::encoding::decode_vector_header(decoder, offset)? {
                None => return Err(fidl::Error::NotNullable),
                Some(len) => len,
            };
            depth.increment()?;
            let envelope_size = 8;
            let bytes_len = len * envelope_size;
            let offset = decoder.out_of_line_offset(bytes_len)?;
            // Decode the envelope for each type.
            let mut _next_ordinal_to_read = 0;
            let mut next_offset = offset;
            let end_offset = offset + bytes_len;
            _next_ordinal_to_read += 1;
            if next_offset >= end_offset {
                return Ok(());
            }

            // Decode unknown envelopes for gaps in ordinals.
            while _next_ordinal_to_read < 1 {
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                _next_ordinal_to_read += 1;
                next_offset += envelope_size;
            }

            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            if let Some((inlined, num_bytes, num_handles)) =
                fidl::encoding::decode_envelope_header(decoder, next_offset)?
            {
                let member_inline_size =
                    <f32 as fidl::encoding::TypeMarker>::inline_size(decoder.context);
                if inlined != (member_inline_size <= 4) {
                    return Err(fidl::Error::InvalidInlineBitInEnvelope);
                }
                let inner_offset;
                let mut inner_depth = depth.clone();
                if inlined {
                    decoder.check_inline_envelope_padding(next_offset, member_inline_size)?;
                    inner_offset = next_offset;
                } else {
                    inner_offset = decoder.out_of_line_offset(member_inline_size)?;
                    inner_depth.increment()?;
                }
                let val_ref = self.volume.get_or_insert_with(|| fidl::new_empty!(f32));
                fidl::decode!(f32, val_ref, decoder, inner_offset, inner_depth)?;
                if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize)
                {
                    return Err(fidl::Error::InvalidNumBytesInEnvelope);
                }
                if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                    return Err(fidl::Error::InvalidNumHandlesInEnvelope);
                }
            }

            next_offset += envelope_size;

            // Decode the remaining unknown envelopes.
            while next_offset < end_offset {
                _next_ordinal_to_read += 1;
                fidl::encoding::decode_unknown_envelope(decoder, next_offset, depth)?;
                next_offset += envelope_size;
            }

            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for PolicyParameters {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for PolicyParameters {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<PolicyParameters> for &PolicyParameters {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<PolicyParameters>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
                PolicyParameters::Min(ref val) => fidl::encoding::encode_in_envelope::<Volume>(
                    <Volume as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
                PolicyParameters::Max(ref val) => fidl::encoding::encode_in_envelope::<Volume>(
                    <Volume as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder,
                    offset + 8,
                    _depth,
                ),
            }
        }
    }

    impl fidl::encoding::Decode<Self> for PolicyParameters {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Min(fidl::new_empty!(Volume))
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            #[allow(unused_variables)]
            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            let (ordinal, inlined, num_bytes, num_handles) =
                fidl::encoding::decode_union_inline_portion(decoder, offset)?;

            let member_inline_size = match ordinal {
                1 => <Volume as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                2 => <Volume as fidl::encoding::TypeMarker>::inline_size(decoder.context),
                _ => return Err(fidl::Error::UnknownUnionTag),
            };

            if inlined != (member_inline_size <= 4) {
                return Err(fidl::Error::InvalidInlineBitInEnvelope);
            }
            let _inner_offset;
            if inlined {
                decoder.check_inline_envelope_padding(offset + 8, member_inline_size)?;
                _inner_offset = offset + 8;
            } else {
                depth.increment()?;
                _inner_offset = decoder.out_of_line_offset(member_inline_size)?;
            }
            match ordinal {
                1 => {
                    #[allow(irrefutable_let_patterns)]
                    if let PolicyParameters::Min(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = PolicyParameters::Min(fidl::new_empty!(Volume));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let PolicyParameters::Min(ref mut val) = self {
                        fidl::decode!(Volume, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                2 => {
                    #[allow(irrefutable_let_patterns)]
                    if let PolicyParameters::Max(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self = PolicyParameters::Max(fidl::new_empty!(Volume));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let PolicyParameters::Max(ref mut val) = self {
                        fidl::decode!(Volume, val, decoder, _inner_offset, depth)?;
                    } else {
                        unreachable!()
                    }
                }
                ordinal => panic!("unexpected ordinal {:?}", ordinal),
            }
            if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize) {
                return Err(fidl::Error::InvalidNumBytesInEnvelope);
            }
            if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                return Err(fidl::Error::InvalidNumHandlesInEnvelope);
            }
            Ok(())
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Target {
        type Owned = Self;

        #[inline(always)]
        fn inline_align(_context: fidl::encoding::Context) -> usize {
            8
        }

        #[inline(always)]
        fn inline_size(_context: fidl::encoding::Context) -> usize {
            16
        }
    }
    impl fidl::encoding::ValueTypeMarker for Target {
        type Borrowed<'a> = &'a Self;
        fn borrow<'a>(
            value: &'a <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::Encode<Target> for &Target {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<'_>,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Target>(offset);
            encoder.write_num::<u64>(self.ordinal(), offset);
            match self {
            Target::Stream(ref val) => {
                fidl::encoding::encode_in_envelope::<fidl_fuchsia_media::AudioRenderUsage>(
                    <fidl_fuchsia_media::AudioRenderUsage as fidl::encoding::ValueTypeMarker>::borrow(val),
                    encoder, offset + 8, _depth
                )
            }
        }
        }
    }

    impl fidl::encoding::Decode<Self> for Target {
        #[inline(always)]
        fn new_empty() -> Self {
            Self::Stream(fidl::new_empty!(fidl_fuchsia_media::AudioRenderUsage))
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<'_>,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            #[allow(unused_variables)]
            let next_out_of_line = decoder.next_out_of_line();
            let handles_before = decoder.remaining_handles();
            let (ordinal, inlined, num_bytes, num_handles) =
                fidl::encoding::decode_union_inline_portion(decoder, offset)?;

            let member_inline_size = match ordinal {
            1 => <fidl_fuchsia_media::AudioRenderUsage as fidl::encoding::TypeMarker>::inline_size(decoder.context),
            _ => return Err(fidl::Error::UnknownUnionTag),
        };

            if inlined != (member_inline_size <= 4) {
                return Err(fidl::Error::InvalidInlineBitInEnvelope);
            }
            let _inner_offset;
            if inlined {
                decoder.check_inline_envelope_padding(offset + 8, member_inline_size)?;
                _inner_offset = offset + 8;
            } else {
                depth.increment()?;
                _inner_offset = decoder.out_of_line_offset(member_inline_size)?;
            }
            match ordinal {
                1 => {
                    #[allow(irrefutable_let_patterns)]
                    if let Target::Stream(_) = self {
                        // Do nothing, read the value into the object
                    } else {
                        // Initialize `self` to the right variant
                        *self =
                            Target::Stream(fidl::new_empty!(fidl_fuchsia_media::AudioRenderUsage));
                    }
                    #[allow(irrefutable_let_patterns)]
                    if let Target::Stream(ref mut val) = self {
                        fidl::decode!(
                            fidl_fuchsia_media::AudioRenderUsage,
                            val,
                            decoder,
                            _inner_offset,
                            depth
                        )?;
                    } else {
                        unreachable!()
                    }
                }
                ordinal => panic!("unexpected ordinal {:?}", ordinal),
            }
            if !inlined && decoder.next_out_of_line() != next_out_of_line + (num_bytes as usize) {
                return Err(fidl::Error::InvalidNumBytesInEnvelope);
            }
            if handles_before != decoder.remaining_handles() + (num_handles as usize) {
                return Err(fidl::Error::InvalidNumHandlesInEnvelope);
            }
            Ok(())
        }
    }
}