Enum gstreamer::PadPresence

#[non_exhaustive]
pub enum PadPresence {
    Always,
    Sometimes,
    Request,
    // some variants omitted
}

Indicates when this pad will become available.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Always

the pad is always available

Sometimes

the pad will become available depending on the media stream

Request

the pad is only available on request with ElementExt::request_pad().

Trait Implementations

impl Clone for PadPresence

fn clone(&self) -> PadPresence

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PadPresence

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

Formats the value using the given formatter.

impl<'a> FromValue<'a> for PadPresence

type Checker = GenericValueTypeChecker<Self>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl Hash for PadPresence

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, 

Feeds a slice of this type into the given Hasher.

impl Ord for PadPresence

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

This method returns an Ordering between self and other.

#[must_use]

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

Compares and returns the maximum of two values.

#[must_use]

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

Compares and returns the minimum of two values.

#[must_use]

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

Restrict a value to a certain interval.

impl PartialEq<PadPresence> for PadPresence

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<PadPresence> for PadPresence

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

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

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

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

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

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

impl StaticType for PadPresence

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for PadPresence

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifer of self.

impl ValueType for PadPresence

type Type = Self

Type to get the Type from.

impl Copy for PadPresence

impl Eq for PadPresence

impl StructuralEq for PadPresence

impl StructuralPartialEq for PadPresence