Struct gstreamer::ElementClass

#[repr(C)]pub struct ElementClass(_);

Implementations

impl ElementClass

pub fn get_metadata<'a>(&self, key: &str) -> Option<&'a str>

pub fn get_pad_template(&self, name: &str) -> Option<PadTemplate>

pub fn get_pad_template_list(&self) -> Vec<PadTemplate>

Methods from Deref<Target = <Object as ObjectType>::RustClassType>

Trait Implementations

impl Debug for ElementClass

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

Formats the value using the given formatter.

impl Deref for ElementClass

type Target = <Object as ObjectType>::RustClassType

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for ElementClass

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl ElementClassSubclassExt for ElementClass

fn add_pad_template(&mut self, pad_template: PadTemplate)

fn set_metadata(
    &mut self,
    long_name: &str,
    classification: &str,
    description: &str,
    author: &str
)

fn add_metadata(&mut self, key: &str, value: &str)

impl IsClassFor for ElementClass

type Instance = Element

Corresponding Rust instance type for this class.

fn get_type(&self) -> Type

Get the type id for this class.

fn upcast_ref<U>(&self) -> &U where
    U: IsClassFor,
    Self::Instance: IsA<<U as IsClassFor>::Instance>,
    <U as IsClassFor>::Instance: ObjectType, 

Casts this class to a reference to a parent type's class.

fn upcast_ref_mut<U>(&mut self) -> &mut U where
    U: IsClassFor,
    Self::Instance: IsA<<U as IsClassFor>::Instance>,
    <U as IsClassFor>::Instance: ObjectType, 

Casts this class to a mutable reference to a parent type's class.

fn downcast_ref<U>(&self) -> Option<&U> where
    U: IsClassFor,
    <U as IsClassFor>::Instance: IsA<Self::Instance>,
    Self::Instance: ObjectType, 

Casts this class to a reference to a child type's class or fails if this class is not implementing the child class.

fn downcast_ref_mut<U>(&mut self) -> Option<&mut U> where
    U: IsClassFor,
    <U as IsClassFor>::Instance: IsA<Self::Instance>,
    Self::Instance: ObjectType, 

Casts this class to a mutable reference to a child type's class or fails if this class is not implementing the child class.

fn from_type(type_: Type) -> Option<ClassRef<Self>>

Gets the class struct corresponding to type_.

impl<T: ObjectSubclass + ElementImpl> IsSubclassable<T> for ElementClass where
    <T as ObjectSubclass>::Instance: PanicPoison, 

fn override_vfuncs(&mut self)

Override the virtual methods of this class for the given subclass.

impl Send for ElementClass

impl Sync for ElementClass