Struct FrameInfo

pub struct FrameInfo {
    pub buffer_index: u32,
    pub frame_counter: u64,
    pub timestamp: i64,
    pub release_fence: EventPair,
}

Metadata concerning a given frame.

Fields

buffer_index: u32

Identifies the buffer used for this frame as an index into the most recently negotiated buffer collection.

frame_counter: u64

A monotonically increasing counter indicating the number of frames written to this stream’s most recently negotiated buffer collection. Clients can use this to detect dropped frames or generate nominal timestamps using the associated stream’s framerate.

timestamp: i64

The value of the system monotonic clock, measured at the time the hardware completed populating the buffer.

release_fence: EventPair

The client must close this when it has completed reading from the buffer.

Trait Implementations

impl Debug for FrameInfo

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

Formats the value using the given formatter.

impl Decode<FrameInfo, DefaultFuchsiaResourceDialect> for FrameInfo

fn new_empty() -> Self

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<'_, DefaultFuchsiaResourceDialect>, offset: usize, _depth: Depth, ) -> Result<()>

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

impl Encode<FrameInfo, DefaultFuchsiaResourceDialect> for &mut FrameInfo

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

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

impl<T0: Encode<u32, DefaultFuchsiaResourceDialect>, T1: Encode<u64, DefaultFuchsiaResourceDialect>, T2: Encode<i64, DefaultFuchsiaResourceDialect>, T3: Encode<HandleType<EventPair, { _ }, 2147483648>, DefaultFuchsiaResourceDialect>> Encode<FrameInfo, DefaultFuchsiaResourceDialect> for (T0, T1, T2, T3)

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

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

impl Hash for FrameInfo

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

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 FrameInfo

fn cmp(&self, other: &FrameInfo) -> 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 FrameInfo

fn eq(&self, other: &FrameInfo) -> 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 FrameInfo

fn partial_cmp(&self, other: &FrameInfo) -> 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 ResourceTypeMarker for FrameInfo

type Borrowed<'a> = &'a mut FrameInfo

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

fn take_or_borrow<'a>( value: &'a mut <Self as TypeMarker>::Owned, ) -> Self::Borrowed<'a>

Cheaply converts from &mut Self::Owned to Self::Borrowed. For HandleBased types this is “take” (it returns an owned handle and replaces value with Handle::invalid), and for all other types it is “borrow” (just converts from one reference to another).

impl TypeMarker for FrameInfo

type Owned = FrameInfo

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 Eq for FrameInfo

impl Standalone<DefaultFuchsiaResourceDialect> for FrameInfo

impl StructuralPartialEq for FrameInfo