Enum gstreamer::StateChangeReturn

#[must_use]
pub enum StateChangeReturn {
    Failure,
    Success,
    Async,
    NoPreroll,
    // some variants omitted
}

The possible return values from a state change function such as Element::set_state. Only StateChangeReturn::Failure is a real failure.

Variants

Failure

Success

Async

NoPreroll

Methods

impl StateChangeReturn

pub fn into_result(self) -> Result<StateChangeSuccess, StateChangeError>

pub fn from_error(_: StateChangeError) -> Self

pub fn from_ok(v: StateChangeSuccess) -> Self

Trait Implementations

impl Clone for StateChangeReturn

fn clone(&self) -> StateChangeReturn

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for StateChangeReturn

impl Debug for StateChangeReturn

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

Formats the value using the given formatter.

impl Eq for StateChangeReturn

impl From<Result<StateChangeSuccess, StateChangeError>> for StateChangeReturn

fn from(res: Result<StateChangeSuccess, StateChangeError>) -> Self

Performs the conversion.

impl From<StateChangeError> for StateChangeReturn

fn from(value: StateChangeError) -> Self

Performs the conversion.

impl From<StateChangeSuccess> for StateChangeReturn

fn from(value: StateChangeSuccess) -> Self

Performs the conversion.

impl<'a> FromValue<'a> for StateChangeReturn

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

impl<'a> FromValueOptional<'a> for StateChangeReturn

unsafe fn from_value_optional(value: &Value) -> Option<Self>

impl Hash for StateChangeReturn

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 StateChangeReturn

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

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<StateChangeReturn> for StateChangeReturn

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

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

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

This method tests for !=.

impl PartialOrd<StateChangeReturn> for StateChangeReturn

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

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

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

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

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

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

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

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

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

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

impl SetValue for StateChangeReturn

unsafe fn set_value(value: &mut Value, this: &Self)

impl StaticType for StateChangeReturn

fn static_type() -> Type

Returns the type identifier of Self.

impl StructuralEq for StateChangeReturn

impl StructuralPartialEq for StateChangeReturn