Struct TxBuffer

pub struct TxBuffer {
    pub id: u32,
    pub data: Vec<BufferRegion>,
    pub meta: BufferMetadata,
    pub head_length: u16,
    pub tail_length: u16,
}

A transmit buffer containing a single frame.

Fields

id: u32

Unique buffer identifier.

data: Vec<BufferRegion>

Regions of VMO holding frame data.

meta: BufferMetadata

Metadata associated with this buffer.

head_length: u16

Length of header bytes in the data contained in this buffer.

Will always be either 0 or the requested [DeviceInfo.tx_head_length] value. The head bytes are always at the beginning of the buffer.

tail_length: u16

Length of tail bytes in the data contained in this buffer.

Will always be either 0 or the requested [DeviceInfo.tx_tail_length] value. The tail bytes are always at the end of the buffer.

Trait Implementations

impl Clone for TxBuffer

fn clone(&self) -> TxBuffer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TxBuffer

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

Formats the value using the given formatter.

impl<D> Decode<TxBuffer, D> for TxBuffer

where D: ResourceDialect,

fn new_empty() -> TxBuffer

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<TxBuffer, D> for &TxBuffer

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 Hash for TxBuffer

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 TxBuffer

fn cmp(&self, other: &TxBuffer) -> 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.

impl PartialEq for TxBuffer

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TxBuffer

fn partial_cmp(&self, other: &TxBuffer) -> 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 TypeMarker for TxBuffer

type Owned = TxBuffer

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 TxBuffer

type Borrowed<'a> = &'a TxBuffer

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: &<TxBuffer as TypeMarker>::Owned, ) -> <TxBuffer as ValueTypeMarker>::Borrowed<'_>

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

impl Eq for TxBuffer

impl Persistable for TxBuffer

impl StructuralPartialEq for TxBuffer