Enum UsbClass 

pub enum UsbClass {
    PerInterface,
    Audio,
    Comm,
    Hid,
    Physical,
    Imaging,
    Printer,
    Msc,
    Hub,
    Cdc,
    Ccid,
    Security,
    Video,
    Healthcare,
    AudioVideo,
    Billboard,
    TypeCBridge,
    Diagnostic,
    Wireless,
    Misc,
    ApplicationSpecific,
    Vendor,
    Undefined,
    // some variants omitted
}

Standard USB class codes as defined in USB 2.0 specification Table 9-8 and Table 9-12 (and the USB-IF Defined Class Codes registry). Architectural Note: Driver maintainers should explicitly handle .is_unknown() fallback paths in match/switch statements for extensible class codes and vendor protocols, preserving wire compatibility with novel USB hardware and future specification additions.

Variants

PerInterface

Audio

Comm

Hid

Physical

Imaging

Printer

Msc

Hub

Cdc

Ccid

Security

Video

Healthcare

AudioVideo

Billboard

TypeCBridge

Diagnostic

Wireless

Misc

ApplicationSpecific

Vendor

Undefined

By designating 0xee as @unknown UNDEFINED, it is impossible for a legitimate physical USB device class descriptor to collide with our sentinel. This allows FIDL to safely parse valid vendor-specific devices (0xff) while gracefully handling any unexpected or newly invented class codes as is_unknown() == true.

Implementations

impl UsbClass

pub fn from_primitive(prim: u8) -> Option<UsbClass>

pub fn from_primitive_allow_unknown(prim: u8) -> UsbClass

pub fn unknown() -> UsbClass

pub const fn into_primitive(self) -> u8

pub fn is_unknown(&self) -> bool

Trait Implementations

impl Clone for UsbClass

fn clone(&self) -> UsbClass

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for UsbClass

impl Debug for UsbClass

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<D> Decode<UsbClass, D> for UsbClass

where D: ResourceDialect,

fn new_empty() -> UsbClass

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl<D> Encode<UsbClass, D> for UsbClass

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Eq for UsbClass

impl Hash for UsbClass

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for UsbClass

fn cmp(&self, other: &UsbClass) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for UsbClass

fn eq(&self, other: &UsbClass) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for UsbClass

fn partial_cmp(&self, other: &UsbClass) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for UsbClass

impl TypeMarker for UsbClass

type Owned = UsbClass

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for UsbClass

type Borrowed<'a> = UsbClass

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<UsbClass as TypeMarker>::Owned, ) -> <UsbClass as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.