fidl_fuchsia_hardware_usb_endpoint/

fidl_fuchsia_hardware_usb_endpoint.rs

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

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

use bitflags::bitflags;
use fidl::client::QueryResponseFut;
use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
use fidl::endpoints::{ControlHandle as _, Responder as _};
pub use fidl_fuchsia_hardware_usb_endpoint_common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

#[derive(Debug, PartialEq)]
pub struct EndpointOnCompletionRequest {
    pub completion: Vec<Completion>,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for EndpointOnCompletionRequest
{
}

#[derive(Debug, PartialEq)]
pub struct EndpointQueueRequestsRequest {
    pub req: Vec<fidl_fuchsia_hardware_usb_request::Request>,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for EndpointQueueRequestsRequest
{
}

#[derive(Debug, PartialEq)]
pub struct EndpointRegisterVmosRequest {
    pub vmo_ids: Vec<VmoInfo>,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for EndpointRegisterVmosRequest
{
}

#[derive(Debug, PartialEq)]
pub struct EndpointRegisterVmosResponse {
    pub vmos: Vec<VmoHandle>,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for EndpointRegisterVmosResponse
{
}

#[derive(Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub struct EndpointUnregisterVmosResponse {
    pub failed_vmo_ids: Vec<u64>,
    pub errors: Vec<i32>,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect>
    for EndpointUnregisterVmosResponse
{
}

/// Completion
#[derive(Debug, Default, PartialEq)]
pub struct Completion {
    /// Request completed.
    pub request: Option<fidl_fuchsia_hardware_usb_request::Request>,
    /// Completion status.
    pub status: Option<i32>,
    /// Bytes successfully transferred.
    pub transfer_size: Option<u64>,
    /// Wake lease if this completion took the system out of suspend.
    pub wake_lease: Option<fidl::EventPair>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect> for Completion {}

/// VMO handle returned for registered VMOs. Only used as a return value for `UnregisterVmos()` to
/// associate a VMO handle with the VmoId it was registered to.
#[derive(Debug, Default, PartialEq)]
pub struct VmoHandle {
    /// ID corresponding to the registered VMO as passed in by `RegisterVmos()` through `VmoInfo`.
    pub id: Option<u64>,
    /// Handle to VMO.
    pub vmo: Option<fidl::Vmo>,
    #[doc(hidden)]
    pub __source_breaking: fidl::marker::SourceBreaking,
}

impl fidl::Standalone<fidl::encoding::DefaultFuchsiaResourceDialect> for VmoHandle {}

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

impl fidl::endpoints::ProtocolMarker for EndpointMarker {
    type Proxy = EndpointProxy;
    type RequestStream = EndpointRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = EndpointSynchronousProxy;

    const DEBUG_NAME: &'static str = "fuchsia.hardware.usb.endpoint.Endpoint";
}
impl fidl::endpoints::DiscoverableProtocolMarker for EndpointMarker {}
pub type EndpointGetInfoResult = Result<EndpointInfo, i32>;
pub type EndpointCancelAllResult = Result<(), i32>;

pub trait EndpointProxyInterface: Send + Sync {
    type GetInfoResponseFut: std::future::Future<Output = Result<EndpointGetInfoResult, fidl::Error>>
        + Send;
    fn r#get_info(&self) -> Self::GetInfoResponseFut;
    type RegisterVmosResponseFut: std::future::Future<Output = Result<Vec<VmoHandle>, fidl::Error>>
        + Send;
    fn r#register_vmos(&self, vmo_ids: &[VmoInfo]) -> Self::RegisterVmosResponseFut;
    type UnregisterVmosResponseFut: std::future::Future<Output = Result<(Vec<u64>, Vec<i32>), fidl::Error>>
        + Send;
    fn r#unregister_vmos(&self, vmo_ids: &[u64]) -> Self::UnregisterVmosResponseFut;
    fn r#queue_requests(
        &self,
        req: Vec<fidl_fuchsia_hardware_usb_request::Request>,
    ) -> Result<(), fidl::Error>;
    type CancelAllResponseFut: std::future::Future<Output = Result<EndpointCancelAllResult, fidl::Error>>
        + Send;
    fn r#cancel_all(&self) -> Self::CancelAllResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct EndpointSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for EndpointSynchronousProxy {
    type Proxy = EndpointProxy;
    type Protocol = EndpointMarker;

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

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

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

#[cfg(target_os = "fuchsia")]
impl EndpointSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        Self { client: fidl::client::sync::Client::new(channel) }
    }

    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::MonotonicInstant,
    ) -> Result<EndpointEvent, fidl::Error> {
        EndpointEvent::decode(self.client.wait_for_event::<EndpointMarker>(deadline)?)
    }

    /// Gets endpoint information
    pub fn r#get_info(
        &self,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<EndpointGetInfoResult, fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            fidl::encoding::ResultType<EndpointGetInfoResponse, i32>,
            EndpointMarker,
        >(
            (),
            0x1fba84f171a95023,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x.info))
    }

    /// Registers and pins VMOs to the vmo_ids. Returns
    ///  * vmo: Handles to successfully registered vmo_ids.
    /// VMO IDs that are already are registered to will fail.
    pub fn r#register_vmos(
        &self,
        mut vmo_ids: &[VmoInfo],
        ___deadline: zx::MonotonicInstant,
    ) -> Result<Vec<VmoHandle>, fidl::Error> {
        let _response = self.client.send_query::<
            EndpointRegisterVmosRequest,
            EndpointRegisterVmosResponse,
            EndpointMarker,
        >(
            (vmo_ids,),
            0x1dea601921185c7b,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.vmos)
    }

    /// Unregisters the VMOs corresponding to the vmo_ids. Returns
    ///  * failed_vmo_ids: vmo_ids that failed to unregister.
    ///  * errors: Error values that correspond 1:1 to failed_vmo_ids above.
    pub fn r#unregister_vmos(
        &self,
        mut vmo_ids: &[u64],
        ___deadline: zx::MonotonicInstant,
    ) -> Result<(Vec<u64>, Vec<i32>), fidl::Error> {
        let _response = self.client.send_query::<
            EndpointUnregisterVmosRequest,
            EndpointUnregisterVmosResponse,
            EndpointMarker,
        >(
            (vmo_ids,),
            0x34719ede1c99c10,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok((_response.failed_vmo_ids, _response.errors))
    }

    /// Submit Requests to queue. Processed starting with the 0th Request. Submitting a vector of
    /// Requests allows for pre-buffering.
    ///
    /// Clients are responsible for cache management and ensuring cache coherency. The explanation
    /// to follow concerns VMOs that have been previously registered via RegisterVmos. The following
    /// rules must be followed:
    ///
    /// 1. After writing to VMO-backed buffers, the caller must call zx_cache_flush with
    ///    ZX_CACHE_FLUSH_DATA before invoking QueueRequests, causing the hardware to DMA-process
    ///    the buffer. This avoids both stale buffer data being DMA-read, and a concurrent race
    ///    between the hardware and CPU to update the same addresses.
    ///
    /// 2. Before reading from VMO-backed buffers, the caller must call zx_cache_flush with
    ///    ZX_CACHE_FLUSH_DATA | ZX_CACHE_FLUSH_INVALIDATE after the buffer contents have been
    ///    DMA-written by the hardware. This implies a non-dirty cache (see #1 above) and ensures
    ///    any subsequent CPU-reads fetch the previously DMA-written data from RAM.
    ///
    /// Failing to adhere to these rules will result in the exchange of corrupted and/or stale data.
    /// If the VMO is not virtually mapped (uncommon), zx_vmo_op_range should be used in lieu of
    /// zx_cache_flush. If the usb::FidlRequest types are in use, they contain helpers for these
    /// operations.
    ///
    /// Requests may be pre-buffered. In other words, requests may be queued for data that is not
    /// present/ready in the buffer yet. The USB Endpoint Server consuming requests does not care
    /// if the data in the buffer is ready or not and will always process requests on schedule. It
    /// is the responsibility of the USB Endpoint Client that submits requests to ensure that data
    /// is ready on schedule (taking into consideration cache management above).
    ///  * Definition of "on schedule" varies for different endpoints and controllers. In general,
    ///    this will be communicated by the `lead_time` parameter returned by `GetInfo`.
    pub fn r#queue_requests(
        &self,
        mut req: Vec<fidl_fuchsia_hardware_usb_request::Request>,
    ) -> Result<(), fidl::Error> {
        self.client.send::<EndpointQueueRequestsRequest>(
            (req.as_mut(),),
            0x431e4170793e38a6,
            fidl::encoding::DynamicFlags::empty(),
        )
    }

    /// Cancels all requests. Returns
    ///  * ZX_ERR_IO_NOT_PRESENT: If device is not running, disconnected, or inactive.
    ///  * ZX_ERR_IO: If cancel failed due to an unsuccessful request.
    pub fn r#cancel_all(
        &self,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<EndpointCancelAllResult, fidl::Error> {
        let _response = self.client.send_query::<
            fidl::encoding::EmptyPayload,
            fidl::encoding::ResultType<fidl::encoding::EmptyStruct, i32>,
            EndpointMarker,
        >(
            (),
            0x233854c776cda1cc,
            fidl::encoding::DynamicFlags::empty(),
            ___deadline,
        )?;
        Ok(_response.map(|x| x))
    }
}

#[cfg(target_os = "fuchsia")]
impl From<EndpointSynchronousProxy> for zx::NullableHandle {
    fn from(value: EndpointSynchronousProxy) -> Self {
        value.into_channel().into()
    }
}

#[cfg(target_os = "fuchsia")]
impl From<fidl::Channel> for EndpointSynchronousProxy {
    fn from(value: fidl::Channel) -> Self {
        Self::new(value)
    }
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::FromClient for EndpointSynchronousProxy {
    type Protocol = EndpointMarker;

    fn from_client(value: fidl::endpoints::ClientEnd<EndpointMarker>) -> Self {
        Self::new(value.into_channel())
    }
}

#[derive(Debug, Clone)]
pub struct EndpointProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for EndpointProxy {
    type Protocol = EndpointMarker;

    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 EndpointProxy {
    /// Create a new Proxy for fuchsia.hardware.usb.endpoint/Endpoint.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <EndpointMarker 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) -> EndpointEventStream {
        EndpointEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Gets endpoint information
    pub fn r#get_info(
        &self,
    ) -> fidl::client::QueryResponseFut<
        EndpointGetInfoResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        EndpointProxyInterface::r#get_info(self)
    }

    /// Registers and pins VMOs to the vmo_ids. Returns
    ///  * vmo: Handles to successfully registered vmo_ids.
    /// VMO IDs that are already are registered to will fail.
    pub fn r#register_vmos(
        &self,
        mut vmo_ids: &[VmoInfo],
    ) -> fidl::client::QueryResponseFut<Vec<VmoHandle>, fidl::encoding::DefaultFuchsiaResourceDialect>
    {
        EndpointProxyInterface::r#register_vmos(self, vmo_ids)
    }

    /// Unregisters the VMOs corresponding to the vmo_ids. Returns
    ///  * failed_vmo_ids: vmo_ids that failed to unregister.
    ///  * errors: Error values that correspond 1:1 to failed_vmo_ids above.
    pub fn r#unregister_vmos(
        &self,
        mut vmo_ids: &[u64],
    ) -> fidl::client::QueryResponseFut<
        (Vec<u64>, Vec<i32>),
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        EndpointProxyInterface::r#unregister_vmos(self, vmo_ids)
    }

    /// Submit Requests to queue. Processed starting with the 0th Request. Submitting a vector of
    /// Requests allows for pre-buffering.
    ///
    /// Clients are responsible for cache management and ensuring cache coherency. The explanation
    /// to follow concerns VMOs that have been previously registered via RegisterVmos. The following
    /// rules must be followed:
    ///
    /// 1. After writing to VMO-backed buffers, the caller must call zx_cache_flush with
    ///    ZX_CACHE_FLUSH_DATA before invoking QueueRequests, causing the hardware to DMA-process
    ///    the buffer. This avoids both stale buffer data being DMA-read, and a concurrent race
    ///    between the hardware and CPU to update the same addresses.
    ///
    /// 2. Before reading from VMO-backed buffers, the caller must call zx_cache_flush with
    ///    ZX_CACHE_FLUSH_DATA | ZX_CACHE_FLUSH_INVALIDATE after the buffer contents have been
    ///    DMA-written by the hardware. This implies a non-dirty cache (see #1 above) and ensures
    ///    any subsequent CPU-reads fetch the previously DMA-written data from RAM.
    ///
    /// Failing to adhere to these rules will result in the exchange of corrupted and/or stale data.
    /// If the VMO is not virtually mapped (uncommon), zx_vmo_op_range should be used in lieu of
    /// zx_cache_flush. If the usb::FidlRequest types are in use, they contain helpers for these
    /// operations.
    ///
    /// Requests may be pre-buffered. In other words, requests may be queued for data that is not
    /// present/ready in the buffer yet. The USB Endpoint Server consuming requests does not care
    /// if the data in the buffer is ready or not and will always process requests on schedule. It
    /// is the responsibility of the USB Endpoint Client that submits requests to ensure that data
    /// is ready on schedule (taking into consideration cache management above).
    ///  * Definition of "on schedule" varies for different endpoints and controllers. In general,
    ///    this will be communicated by the `lead_time` parameter returned by `GetInfo`.
    pub fn r#queue_requests(
        &self,
        mut req: Vec<fidl_fuchsia_hardware_usb_request::Request>,
    ) -> Result<(), fidl::Error> {
        EndpointProxyInterface::r#queue_requests(self, req)
    }

    /// Cancels all requests. Returns
    ///  * ZX_ERR_IO_NOT_PRESENT: If device is not running, disconnected, or inactive.
    ///  * ZX_ERR_IO: If cancel failed due to an unsuccessful request.
    pub fn r#cancel_all(
        &self,
    ) -> fidl::client::QueryResponseFut<
        EndpointCancelAllResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        EndpointProxyInterface::r#cancel_all(self)
    }
}

impl EndpointProxyInterface for EndpointProxy {
    type GetInfoResponseFut = fidl::client::QueryResponseFut<
        EndpointGetInfoResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#get_info(&self) -> Self::GetInfoResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<EndpointGetInfoResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<EndpointGetInfoResponse, i32>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x1fba84f171a95023,
            >(_buf?)?;
            Ok(_response.map(|x| x.info))
        }
        self.client.send_query_and_decode::<fidl::encoding::EmptyPayload, EndpointGetInfoResult>(
            (),
            0x1fba84f171a95023,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type RegisterVmosResponseFut = fidl::client::QueryResponseFut<
        Vec<VmoHandle>,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#register_vmos(&self, mut vmo_ids: &[VmoInfo]) -> Self::RegisterVmosResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<Vec<VmoHandle>, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                EndpointRegisterVmosResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x1dea601921185c7b,
            >(_buf?)?;
            Ok(_response.vmos)
        }
        self.client.send_query_and_decode::<EndpointRegisterVmosRequest, Vec<VmoHandle>>(
            (vmo_ids,),
            0x1dea601921185c7b,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    type UnregisterVmosResponseFut = fidl::client::QueryResponseFut<
        (Vec<u64>, Vec<i32>),
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#unregister_vmos(&self, mut vmo_ids: &[u64]) -> Self::UnregisterVmosResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<(Vec<u64>, Vec<i32>), fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                EndpointUnregisterVmosResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x34719ede1c99c10,
            >(_buf?)?;
            Ok((_response.failed_vmo_ids, _response.errors))
        }
        self.client.send_query_and_decode::<EndpointUnregisterVmosRequest, (Vec<u64>, Vec<i32>)>(
            (vmo_ids,),
            0x34719ede1c99c10,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }

    fn r#queue_requests(
        &self,
        mut req: Vec<fidl_fuchsia_hardware_usb_request::Request>,
    ) -> Result<(), fidl::Error> {
        self.client.send::<EndpointQueueRequestsRequest>(
            (req.as_mut(),),
            0x431e4170793e38a6,
            fidl::encoding::DynamicFlags::empty(),
        )
    }

    type CancelAllResponseFut = fidl::client::QueryResponseFut<
        EndpointCancelAllResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#cancel_all(&self) -> Self::CancelAllResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<EndpointCancelAllResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::ResultType<fidl::encoding::EmptyStruct, i32>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0x233854c776cda1cc,
            >(_buf?)?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<fidl::encoding::EmptyPayload, EndpointCancelAllResult>(
            (),
            0x233854c776cda1cc,
            fidl::encoding::DynamicFlags::empty(),
            _decode,
        )
    }
}

pub struct EndpointEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

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

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

impl futures::Stream for EndpointEventStream {
    type Item = Result<EndpointEvent, 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(EndpointEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum EndpointEvent {
    OnCompletion { completion: Vec<Completion> },
}

impl EndpointEvent {
    #[allow(irrefutable_let_patterns)]
    pub fn into_on_completion(self) -> Option<Vec<Completion>> {
        if let EndpointEvent::OnCompletion { completion } = self {
            Some((completion))
        } else {
            None
        }
    }

    /// Decodes a message buffer as a [`EndpointEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<EndpointEvent, 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 {
            0x2d6471306c049771 => {
                let mut out = fidl::new_empty!(
                    EndpointOnCompletionRequest,
                    fidl::encoding::DefaultFuchsiaResourceDialect
                );
                fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<EndpointOnCompletionRequest>(&tx_header, _body_bytes, _handles, &mut out)?;
                Ok((EndpointEvent::OnCompletion { completion: out.completion }))
            }
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name: <EndpointMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for fuchsia.hardware.usb.endpoint/Endpoint.
pub struct EndpointRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

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

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

impl fidl::endpoints::RequestStream for EndpointRequestStream {
    type Protocol = EndpointMarker;
    type ControlHandle = EndpointControlHandle;

    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 {
        EndpointControlHandle { inner: self.inner.clone() }
    }

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

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

impl futures::Stream for EndpointRequestStream {
    type Item = Result<EndpointRequest, 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 EndpointRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |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.into(),
                        ))));
                    }
                }

                // 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 {
                    0x1fba84f171a95023 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            fidl::encoding::EmptyPayload,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = EndpointControlHandle { inner: this.inner.clone() };
                        Ok(EndpointRequest::GetInfo {
                            responder: EndpointGetInfoResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    0x1dea601921185c7b => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            EndpointRegisterVmosRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<EndpointRegisterVmosRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = EndpointControlHandle { inner: this.inner.clone() };
                        Ok(EndpointRequest::RegisterVmos {
                            vmo_ids: req.vmo_ids,

                            responder: EndpointRegisterVmosResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    0x34719ede1c99c10 => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            EndpointUnregisterVmosRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<EndpointUnregisterVmosRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = EndpointControlHandle { inner: this.inner.clone() };
                        Ok(EndpointRequest::UnregisterVmos {
                            vmo_ids: req.vmo_ids,

                            responder: EndpointUnregisterVmosResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    0x431e4170793e38a6 => {
                        header.validate_request_tx_id(fidl::MethodType::OneWay)?;
                        let mut req = fidl::new_empty!(
                            EndpointQueueRequestsRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<EndpointQueueRequestsRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = EndpointControlHandle { inner: this.inner.clone() };
                        Ok(EndpointRequest::QueueRequests { req: req.req, control_handle })
                    }
                    0x233854c776cda1cc => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            fidl::encoding::EmptyPayload,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<fidl::encoding::EmptyPayload>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = EndpointControlHandle { inner: this.inner.clone() };
                        Ok(EndpointRequest::CancelAll {
                            responder: EndpointCancelAllResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name:
                            <EndpointMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// Endpoint Interface.
/// Pre-registered VMOs associated with the Endpoint are tied to the lifetime of the Endpoint. When
/// the Endpoint is closed, all outstanding registered VMOs are unregistered, references to their
/// handles dropped and any necessary actions for DisableEndpoint will be called.
#[derive(Debug)]
pub enum EndpointRequest {
    /// Gets endpoint information
    GetInfo { responder: EndpointGetInfoResponder },
    /// Registers and pins VMOs to the vmo_ids. Returns
    ///  * vmo: Handles to successfully registered vmo_ids.
    /// VMO IDs that are already are registered to will fail.
    RegisterVmos { vmo_ids: Vec<VmoInfo>, responder: EndpointRegisterVmosResponder },
    /// Unregisters the VMOs corresponding to the vmo_ids. Returns
    ///  * failed_vmo_ids: vmo_ids that failed to unregister.
    ///  * errors: Error values that correspond 1:1 to failed_vmo_ids above.
    UnregisterVmos { vmo_ids: Vec<u64>, responder: EndpointUnregisterVmosResponder },
    /// Submit Requests to queue. Processed starting with the 0th Request. Submitting a vector of
    /// Requests allows for pre-buffering.
    ///
    /// Clients are responsible for cache management and ensuring cache coherency. The explanation
    /// to follow concerns VMOs that have been previously registered via RegisterVmos. The following
    /// rules must be followed:
    ///
    /// 1. After writing to VMO-backed buffers, the caller must call zx_cache_flush with
    ///    ZX_CACHE_FLUSH_DATA before invoking QueueRequests, causing the hardware to DMA-process
    ///    the buffer. This avoids both stale buffer data being DMA-read, and a concurrent race
    ///    between the hardware and CPU to update the same addresses.
    ///
    /// 2. Before reading from VMO-backed buffers, the caller must call zx_cache_flush with
    ///    ZX_CACHE_FLUSH_DATA | ZX_CACHE_FLUSH_INVALIDATE after the buffer contents have been
    ///    DMA-written by the hardware. This implies a non-dirty cache (see #1 above) and ensures
    ///    any subsequent CPU-reads fetch the previously DMA-written data from RAM.
    ///
    /// Failing to adhere to these rules will result in the exchange of corrupted and/or stale data.
    /// If the VMO is not virtually mapped (uncommon), zx_vmo_op_range should be used in lieu of
    /// zx_cache_flush. If the usb::FidlRequest types are in use, they contain helpers for these
    /// operations.
    ///
    /// Requests may be pre-buffered. In other words, requests may be queued for data that is not
    /// present/ready in the buffer yet. The USB Endpoint Server consuming requests does not care
    /// if the data in the buffer is ready or not and will always process requests on schedule. It
    /// is the responsibility of the USB Endpoint Client that submits requests to ensure that data
    /// is ready on schedule (taking into consideration cache management above).
    ///  * Definition of "on schedule" varies for different endpoints and controllers. In general,
    ///    this will be communicated by the `lead_time` parameter returned by `GetInfo`.
    QueueRequests {
        req: Vec<fidl_fuchsia_hardware_usb_request::Request>,
        control_handle: EndpointControlHandle,
    },
    /// Cancels all requests. Returns
    ///  * ZX_ERR_IO_NOT_PRESENT: If device is not running, disconnected, or inactive.
    ///  * ZX_ERR_IO: If cancel failed due to an unsuccessful request.
    CancelAll { responder: EndpointCancelAllResponder },
}

impl EndpointRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_get_info(self) -> Option<(EndpointGetInfoResponder)> {
        if let EndpointRequest::GetInfo { responder } = self { Some((responder)) } else { None }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_register_vmos(self) -> Option<(Vec<VmoInfo>, EndpointRegisterVmosResponder)> {
        if let EndpointRequest::RegisterVmos { vmo_ids, responder } = self {
            Some((vmo_ids, responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_unregister_vmos(self) -> Option<(Vec<u64>, EndpointUnregisterVmosResponder)> {
        if let EndpointRequest::UnregisterVmos { vmo_ids, responder } = self {
            Some((vmo_ids, responder))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_queue_requests(
        self,
    ) -> Option<(Vec<fidl_fuchsia_hardware_usb_request::Request>, EndpointControlHandle)> {
        if let EndpointRequest::QueueRequests { req, control_handle } = self {
            Some((req, control_handle))
        } else {
            None
        }
    }

    #[allow(irrefutable_let_patterns)]
    pub fn into_cancel_all(self) -> Option<(EndpointCancelAllResponder)> {
        if let EndpointRequest::CancelAll { responder } = self { Some((responder)) } else { None }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            EndpointRequest::GetInfo { .. } => "get_info",
            EndpointRequest::RegisterVmos { .. } => "register_vmos",
            EndpointRequest::UnregisterVmos { .. } => "unregister_vmos",
            EndpointRequest::QueueRequests { .. } => "queue_requests",
            EndpointRequest::CancelAll { .. } => "cancel_all",
        }
    }
}

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

impl EndpointControlHandle {
    pub fn shutdown_with_epitaph(&self, status: impl Into<fidl::Epitaph>) {
        self.inner.shutdown_with_epitaph(status.into())
    }
}

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

    fn shutdown_with_epitaph(&self, status: fidl::Epitaph) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl EndpointControlHandle {
    pub fn send_on_completion(&self, mut completion: Vec<Completion>) -> Result<(), fidl::Error> {
        self.inner.send::<EndpointOnCompletionRequest>(
            (completion.as_mut(),),
            0,
            0x2d6471306c049771,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

/// Set the the channel to be shutdown (see [`EndpointControlHandle::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 EndpointGetInfoResponder {
    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 EndpointGetInfoResponder {
    type ControlHandle = EndpointControlHandle;

    fn control_handle(&self) -> &EndpointControlHandle {
        &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 EndpointGetInfoResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<&EndpointInfo, i32>) -> 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<&EndpointInfo, i32>,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<&EndpointInfo, i32>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::ResultType<EndpointGetInfoResponse, i32>>(
            result.map(|info| (info,)),
            self.tx_id,
            0x1fba84f171a95023,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

/// Set the the channel to be shutdown (see [`EndpointControlHandle::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 EndpointRegisterVmosResponder {
    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 EndpointRegisterVmosResponder {
    type ControlHandle = EndpointControlHandle;

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

    fn send_raw(&self, mut vmos: Vec<VmoHandle>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<EndpointRegisterVmosResponse>(
            (vmos.as_mut(),),
            self.tx_id,
            0x1dea601921185c7b,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

/// Set the the channel to be shutdown (see [`EndpointControlHandle::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 EndpointUnregisterVmosResponder {
    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 EndpointUnregisterVmosResponder {
    type ControlHandle = EndpointControlHandle;

    fn control_handle(&self) -> &EndpointControlHandle {
        &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 EndpointUnregisterVmosResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut failed_vmo_ids: &[u64], mut errors: &[i32]) -> Result<(), fidl::Error> {
        let _result = self.send_raw(failed_vmo_ids, errors);
        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 failed_vmo_ids: &[u64],
        mut errors: &[i32],
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(failed_vmo_ids, errors);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut failed_vmo_ids: &[u64], mut errors: &[i32]) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<EndpointUnregisterVmosResponse>(
            (failed_vmo_ids, errors),
            self.tx_id,
            0x34719ede1c99c10,
            fidl::encoding::DynamicFlags::empty(),
        )
    }
}

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

/// Set the the channel to be shutdown (see [`EndpointControlHandle::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 EndpointCancelAllResponder {
    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 EndpointCancelAllResponder {
    type ControlHandle = EndpointControlHandle;

    fn control_handle(&self) -> &EndpointControlHandle {
        &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 EndpointCancelAllResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<(), i32>) -> 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<(), i32>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<(), i32>) -> Result<(), fidl::Error> {
        self.control_handle
            .inner
            .send::<fidl::encoding::ResultType<fidl::encoding::EmptyStruct, i32>>(
                result,
                self.tx_id,
                0x233854c776cda1cc,
                fidl::encoding::DynamicFlags::empty(),
            )
    }
}

mod internal {
    use super::*;

    impl fidl::encoding::ResourceTypeMarker for EndpointOnCompletionRequest {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EndpointOnCompletionRequest {
        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
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            EndpointOnCompletionRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut EndpointOnCompletionRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointOnCompletionRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<EndpointOnCompletionRequest, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::Vector<Completion, 300> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.completion),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::Vector<Completion, 300>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            EndpointOnCompletionRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointOnCompletionRequest>(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, fidl::encoding::DefaultFuchsiaResourceDialect>
        for EndpointOnCompletionRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                completion: fidl::new_empty!(fidl::encoding::Vector<Completion, 300>, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::Vector<Completion, 300>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.completion, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for EndpointQueueRequestsRequest {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EndpointQueueRequestsRequest {
        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
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            EndpointQueueRequestsRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut EndpointQueueRequestsRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointQueueRequestsRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<EndpointQueueRequestsRequest, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::Vector<fidl_fuchsia_hardware_usb_request::Request, 300> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.req),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::Vector<fidl_fuchsia_hardware_usb_request::Request, 300>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            EndpointQueueRequestsRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointQueueRequestsRequest>(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, fidl::encoding::DefaultFuchsiaResourceDialect>
        for EndpointQueueRequestsRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                req: fidl::new_empty!(fidl::encoding::Vector<fidl_fuchsia_hardware_usb_request::Request, 300>, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::Vector<fidl_fuchsia_hardware_usb_request::Request, 300>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.req, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for EndpointRegisterVmosRequest {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EndpointRegisterVmosRequest {
        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
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            EndpointRegisterVmosRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut EndpointRegisterVmosRequest
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointRegisterVmosRequest>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<EndpointRegisterVmosRequest, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::Vector<VmoInfo, 300> as fidl::encoding::ValueTypeMarker>::borrow(&self.vmo_ids),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::Vector<VmoInfo, 300>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            EndpointRegisterVmosRequest,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointRegisterVmosRequest>(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, fidl::encoding::DefaultFuchsiaResourceDialect>
        for EndpointRegisterVmosRequest
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                vmo_ids: fidl::new_empty!(fidl::encoding::Vector<VmoInfo, 300>, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::Vector<VmoInfo, 300>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.vmo_ids, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for EndpointRegisterVmosResponse {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EndpointRegisterVmosResponse {
        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
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            EndpointRegisterVmosResponse,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut EndpointRegisterVmosResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointRegisterVmosResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<EndpointRegisterVmosResponse, fidl::encoding::DefaultFuchsiaResourceDialect>::encode(
                (
                    <fidl::encoding::Vector<VmoHandle, 300> as fidl::encoding::ResourceTypeMarker>::take_or_borrow(&mut self.vmos),
                ),
                encoder, offset, _depth
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::Vector<VmoHandle, 300>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            EndpointRegisterVmosResponse,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0,)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointRegisterVmosResponse>(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, fidl::encoding::DefaultFuchsiaResourceDialect>
        for EndpointRegisterVmosResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                vmos: fidl::new_empty!(fidl::encoding::Vector<VmoHandle, 300>, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::Vector<VmoHandle, 300>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.vmos, decoder, offset + 0, _depth)?;
            Ok(())
        }
    }

    impl fidl::encoding::ResourceTypeMarker for EndpointUnregisterVmosResponse {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for EndpointUnregisterVmosResponse {
        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
        }
    }

    unsafe impl
        fidl::encoding::Encode<
            EndpointUnregisterVmosResponse,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for &mut EndpointUnregisterVmosResponse
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointUnregisterVmosResponse>(offset);
            // Delegate to tuple encoding.
            fidl::encoding::Encode::<
                EndpointUnregisterVmosResponse,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >::encode(
                (
                    <fidl::encoding::Vector<u64, 300> as fidl::encoding::ValueTypeMarker>::borrow(
                        &self.failed_vmo_ids,
                    ),
                    <fidl::encoding::Vector<i32, 300> as fidl::encoding::ValueTypeMarker>::borrow(
                        &self.errors,
                    ),
                ),
                encoder,
                offset,
                _depth,
            )
        }
    }
    unsafe impl<
        T0: fidl::encoding::Encode<
                fidl::encoding::Vector<u64, 300>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
        T1: fidl::encoding::Encode<
                fidl::encoding::Vector<i32, 300>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
    >
        fidl::encoding::Encode<
            EndpointUnregisterVmosResponse,
            fidl::encoding::DefaultFuchsiaResourceDialect,
        > for (T0, T1)
    {
        #[inline]
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<EndpointUnregisterVmosResponse>(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, fidl::encoding::DefaultFuchsiaResourceDialect>
        for EndpointUnregisterVmosResponse
    {
        #[inline(always)]
        fn new_empty() -> Self {
            Self {
                failed_vmo_ids: fidl::new_empty!(fidl::encoding::Vector<u64, 300>, fidl::encoding::DefaultFuchsiaResourceDialect),
                errors: fidl::new_empty!(fidl::encoding::Vector<i32, 300>, fidl::encoding::DefaultFuchsiaResourceDialect),
            }
        }

        #[inline]
        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            _depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            decoder.debug_check_bounds::<Self>(offset);
            // Verify that padding bytes are zero.
            fidl::decode!(fidl::encoding::Vector<u64, 300>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.failed_vmo_ids, decoder, offset + 0, _depth)?;
            fidl::decode!(fidl::encoding::Vector<i32, 300>, fidl::encoding::DefaultFuchsiaResourceDialect, &mut self.errors, decoder, offset + 16, _depth)?;
            Ok(())
        }
    }

    impl Completion {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.wake_lease {
                return 4;
            }
            if let Some(_) = self.transfer_size {
                return 3;
            }
            if let Some(_) = self.status {
                return 2;
            }
            if let Some(_) = self.request {
                return 1;
            }
            0
        }
    }

    impl fidl::encoding::ResourceTypeMarker for Completion {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for Completion {
        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
        }
    }

    unsafe impl fidl::encoding::Encode<Completion, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut Completion
    {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<Completion>(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);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            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::<fidl_fuchsia_hardware_usb_request::Request, fidl::encoding::DefaultFuchsiaResourceDialect>(
            self.request.as_mut().map(<fidl_fuchsia_hardware_usb_request::Request as fidl::encoding::ResourceTypeMarker>::take_or_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::<
                i32,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >(
                self.status.as_ref().map(<i32 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::<
                u64,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >(
                self.transfer_size.as_ref().map(<u64 as fidl::encoding::ValueTypeMarker>::borrow),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;
            if 4 > 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 = (4 - 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::HandleType<
                    fidl::EventPair,
                    { fidl::ObjectType::EVENTPAIR.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >(
                self.wake_lease.as_mut().map(
                    <fidl::encoding::HandleType<
                        fidl::EventPair,
                        { fidl::ObjectType::EVENTPAIR.into_raw() },
                        2147483648,
                    > as fidl::encoding::ResourceTypeMarker>::take_or_borrow,
                ),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

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

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            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,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            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 = <fidl_fuchsia_hardware_usb_request::Request 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.request.get_or_insert_with(|| {
                    fidl::new_empty!(
                        fidl_fuchsia_hardware_usb_request::Request,
                        fidl::encoding::DefaultFuchsiaResourceDialect
                    )
                });
                fidl::decode!(
                    fidl_fuchsia_hardware_usb_request::Request,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                    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 =
                    <i32 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.status.get_or_insert_with(|| {
                    fidl::new_empty!(i32, fidl::encoding::DefaultFuchsiaResourceDialect)
                });
                fidl::decode!(
                    i32,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                    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 =
                    <u64 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.transfer_size.get_or_insert_with(|| {
                    fidl::new_empty!(u64, fidl::encoding::DefaultFuchsiaResourceDialect)
                });
                fidl::decode!(
                    u64,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                    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 < 4 {
                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::HandleType<
                    fidl::EventPair,
                    { fidl::ObjectType::EVENTPAIR.into_raw() },
                    2147483648,
                > 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.wake_lease.get_or_insert_with(|| fidl::new_empty!(fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect));
                fidl::decode!(fidl::encoding::HandleType<fidl::EventPair, { fidl::ObjectType::EVENTPAIR.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, 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 VmoHandle {
        #[inline(always)]
        fn max_ordinal_present(&self) -> u64 {
            if let Some(_) = self.vmo {
                return 2;
            }
            if let Some(_) = self.id {
                return 1;
            }
            0
        }
    }

    impl fidl::encoding::ResourceTypeMarker for VmoHandle {
        type Borrowed<'a> = &'a mut Self;
        fn take_or_borrow<'a>(
            value: &'a mut <Self as fidl::encoding::TypeMarker>::Owned,
        ) -> Self::Borrowed<'a> {
            value
        }
    }

    unsafe impl fidl::encoding::TypeMarker for VmoHandle {
        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
        }
    }

    unsafe impl fidl::encoding::Encode<VmoHandle, fidl::encoding::DefaultFuchsiaResourceDialect>
        for &mut VmoHandle
    {
        unsafe fn encode(
            self,
            encoder: &mut fidl::encoding::Encoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            offset: usize,
            mut depth: fidl::encoding::Depth,
        ) -> fidl::Result<()> {
            encoder.debug_check_bounds::<VmoHandle>(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);
            // Calling encoder.out_of_line_offset(0) is not allowed.
            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::<
                u64,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >(
                self.id.as_ref().map(<u64 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::HandleType<
                    fidl::Vmo,
                    { fidl::ObjectType::VMO.into_raw() },
                    2147483648,
                >,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >(
                self.vmo.as_mut().map(
                    <fidl::encoding::HandleType<
                        fidl::Vmo,
                        { fidl::ObjectType::VMO.into_raw() },
                        2147483648,
                    > as fidl::encoding::ResourceTypeMarker>::take_or_borrow,
                ),
                encoder,
                offset + cur_offset,
                depth,
            )?;

            _prev_end_offset = cur_offset + envelope_size;

            Ok(())
        }
    }

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

        unsafe fn decode(
            &mut self,
            decoder: &mut fidl::encoding::Decoder<
                '_,
                fidl::encoding::DefaultFuchsiaResourceDialect,
            >,
            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,
            };
            // Calling decoder.out_of_line_offset(0) is not allowed.
            if len == 0 {
                return Ok(());
            };
            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 =
                    <u64 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.id.get_or_insert_with(|| {
                    fidl::new_empty!(u64, fidl::encoding::DefaultFuchsiaResourceDialect)
                });
                fidl::decode!(
                    u64,
                    fidl::encoding::DefaultFuchsiaResourceDialect,
                    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::HandleType<
                    fidl::Vmo,
                    { fidl::ObjectType::VMO.into_raw() },
                    2147483648,
                > 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.vmo.get_or_insert_with(|| fidl::new_empty!(fidl::encoding::HandleType<fidl::Vmo, { fidl::ObjectType::VMO.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect));
                fidl::decode!(fidl::encoding::HandleType<fidl::Vmo, { fidl::ObjectType::VMO.into_raw() }, 2147483648>, fidl::encoding::DefaultFuchsiaResourceDialect, 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(())
        }
    }
}