Struct AVSampleBufferRequestMode

#[repr(transparent)]
pub struct AVSampleBufferRequestMode(pub NSInteger);

Available on crate feature AVSampleBufferGenerator only.

Defines the allowed values for AVSampleBufferRequest’s mode property.

Sample data for requests with AVSampleBufferRequestModeImmediate will be loaded as soon as possible. The current time represented by AVSampleBufferGenerator’s timebase has no influence on these requests.

AVSampleBufferRequestModeScheduled indicates that a request is needed by the time AVSampleBufferGenerator’s timebase reaches the CMSampleBuffer’s presentationTime or, if specificed, AVSampleBufferRequest’s overrideTime. The AVSampleBufferGenerator will attempt to deliver sample data with sufficient leeway for downstream processing. It will also attempt to hold off on loading data until the CMSampleBuffer is needed. If AVSampleBufferGenerator’s timebase has a rate of zero, this mode behaves like AVSampleBufferRequestModeImmediate.

The AVSampleBufferGenerator will attempt to read data for opportunistic requests as soon as possible. However, in situations with multiple competing requests, the AVSampleBufferGenerator may defer an opportunistic request in favor of another immediate request or a scheduled requests with a presentation time close to the timebase time. Because a request with AVSampleBufferRequestModeOpportunistic may be postponed indefinitely, this mode should not be used for time-sensitive processing.

See also Apple’s documentation

Tuple Fields

0: NSInteger

Implementations

impl AVSampleBufferRequestMode

pub const Immediate: Self

pub const Scheduled: Self

pub const Opportunistic: Self

Trait Implementations

impl Clone for AVSampleBufferRequestMode

fn clone(&self) -> AVSampleBufferRequestMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AVSampleBufferRequestMode

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

Formats the value using the given formatter.

impl Encode for AVSampleBufferRequestMode

const ENCODING: Encoding = NSInteger::ENCODING

The Objective-C type-encoding for this type.

impl Hash for AVSampleBufferRequestMode

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 AVSampleBufferRequestMode

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

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

fn partial_cmp(&self, other: &AVSampleBufferRequestMode) -> 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 RefEncode for AVSampleBufferRequestMode

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for AVSampleBufferRequestMode

impl Eq for AVSampleBufferRequestMode

impl StructuralPartialEq for AVSampleBufferRequestMode