Enum gstreamer::PadPresence

#[repr(i32)]
pub enum PadPresence {
    Always = 0,
    Sometimes = 1,
    Request = 2,
}

Indicates when this pad will become available.

Variants

Always = 0

the pad is always available

Sometimes = 1

the pad will become available depending on the media stream

Request = 2

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<'de> Deserialize<'de> for PadPresence

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<PadPresence> for Value

fn from(v: PadPresence) -> Self

Converts to this type from the input type.

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

type Checker = GenericValueTypeChecker<PadPresence>

Value type checker.

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

Get the contained value from a Value.

impl HasParamSpec for PadPresence

type ParamSpec = ParamSpecEnum

type SetValue = PadPresence

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str, _: PadPresence) -> ParamSpecEnumBuilder<'_, PadPresence>

fn param_spec_builder() -> Self::BuilderFn

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, Self: Sized,

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.

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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq 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: &Rhs) -> bool

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

impl PartialOrd for PadPresence

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

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

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

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

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

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

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

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

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 Serialize for PadPresence

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

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 identifier of self.

impl ValueType for PadPresence

type Type = PadPresence

Type to get the Type from.

impl Copy for PadPresence

impl Eq for PadPresence

impl StructuralPartialEq for PadPresence