Struct DeviceProvider

pub struct DeviceProvider { /* private fields */ }

A DeviceProvider subclass is provided by a plugin that handles devices if there is a way to programmatically list connected devices. It can also optionally provide updates to the list of connected devices.

Each DeviceProvider subclass is a singleton, a plugin should normally provide a single subclass for all devices.

Applications would normally use a DeviceMonitor to monitor devices from all relevant providers.

This is an Abstract Base Class, you cannot instantiate it.

Signals

provider-hidden

provider-unhidden

Object

deep-notify

The deep notify signal is used to be notified of property changes. It is typically attached to the toplevel bin to receive notifications from all the elements contained in that bin.

Detailed

Implements

DeviceProviderExt, GstObjectExt, [trait@glib::ObjectExt], DeviceProviderExtManual

GLib type: GObject with reference counted clone semantics.

Implementations

impl DeviceProvider

pub const NONE: Option<&'static DeviceProvider> = None

impl DeviceProvider

pub fn register( plugin: Option<&Plugin>, name: &str, rank: Rank, type_: Type, ) -> Result<(), BoolError>

Create a new device providerfactory capable of instantiating objects of the type_ and add the factory to plugin.

plugin

Plugin to register the device provider with, or None for a static device provider.

name

name of device providers of this type

rank

rank of device provider (higher rank means more importance when autoplugging)

type_

GType of device provider to register

Returns

true, if the registering succeeded, false on error

Trait Implementations

impl Clone for DeviceProvider

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

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

Performs copy-assignment from source.

impl Debug for DeviceProvider

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

Formats the value using the given formatter.

impl HasParamSpec for DeviceProvider

type ParamSpec = ParamSpecObject

type SetValue = DeviceProvider

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

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, DeviceProvider>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for DeviceProvider

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Hashes the memory address of this object.

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<T: DeviceProviderImpl> IsSubclassable<T> for DeviceProvider

fn class_init(klass: &mut Class<Self>)

Override the virtual methods of this class for the given subclass and do other class initialization.

fn instance_init(instance: &mut InitializingObject<T>)

Instance specific initialization.

impl Ord for DeviceProvider

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

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

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 ParentClassIs for DeviceProvider

type Parent = Object

impl<OT: ObjectType> PartialEq<OT> for DeviceProvider

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

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

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<OT: ObjectType> PartialOrd<OT> for DeviceProvider

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

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

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 StaticType for DeviceProvider

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for DeviceProvider

impl IsA<Object> for DeviceProvider

impl Send for DeviceProvider

impl Sync for DeviceProvider