Struct gstreamer::DeviceProviderFactory

pub struct DeviceProviderFactory(_, _);

DeviceProviderFactory is used to create instances of device providers. A GstDeviceProviderfactory can be added to a Plugin as it is also a PluginFeature.

Use the DeviceProviderFactory::find and DeviceProviderFactory::get functions to create device provider instances or use DeviceProviderFactory::get_by_name as a convenient shortcut.

Implements

PluginFeatureExt, GstObjectExt, glib::object::ObjectExt

Methods

impl DeviceProviderFactory

pub fn get(&self) -> Option<DeviceProvider>

Returns the device provider of the type defined by the given device providerfactory.

Returns

the DeviceProvider or None if the device provider couldn't be created

pub fn get_device_provider_type(&self) -> Type

Get the glib::Type for device providers managed by this factory. The type can only be retrieved if the device provider factory is loaded, which can be assured with PluginFeatureExt::load.

Returns

the glib::Type for device providers managed by this factory.

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

Get the metadata on self with key.

key

a key

Returns

the metadata with key on self or None when there was no metadata with the given key.

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn get_metadata_keys(&self) -> Vec<String>

Get the available keys for the metadata on self.

Returns

a None-terminated array of key strings, or None when there is no metadata. Free with g_strfreev when no longer needed.

pub fn has_classes<'a, P: Into<Option<&'a str>>>(&self, classes: P) -> bool

Check if self matches all of the given classes

classes

a "/" separate list of classes to match, only match if all classes are matched

Returns

true if self matches or if classes is None.

pub fn has_classesv(&self, classes: &[&str]) -> bool

Check if self matches all of the given classes

classes

a None terminated array of classes to match, only match if all classes are matched

Returns

true if self matches.

pub fn find(name: &str) -> Option<DeviceProviderFactory>

Search for an device provider factory of the given name. Refs the returned device provider factory; caller is responsible for unreffing.

name

name of factory to find

Returns

DeviceProviderFactory if found, None otherwise

pub fn get_by_name(factoryname: &str) -> Option<DeviceProvider>

Returns the device provider of the type defined by the given device provider factory.

factoryname

a named factory to instantiate

Returns

a DeviceProvider or None if unable to create device provider

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn list_get_device_providers(minrank: Rank) -> Vec<DeviceProviderFactory>

Get a list of factories with a rank greater or equal to minrank. The list of factories is returned by decreasing rank.

minrank

Minimum rank

Returns

a glib::List of DeviceProviderFactory device providers. Use PluginFeature::list_free after usage.

Trait Implementations

impl Clone for DeviceProviderFactory

fn clone(&self) -> DeviceProviderFactory

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Hash for DeviceProviderFactory

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 DeviceProviderFactory

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl StaticType for DeviceProviderFactory

fn static_type() -> Type

Returns the type identifier of Self.

impl<T: IsA<Object>> PartialEq<T> for DeviceProviderFactory

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

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Eq for DeviceProviderFactory

impl<T: IsA<Object>> PartialOrd<T> for DeviceProviderFactory

fn partial_cmp(&self, other: &T) -> 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 Debug for DeviceProviderFactory

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

Formats the value using the given formatter.

impl IsA<PluginFeature> for DeviceProviderFactory

impl IsA<Object> for DeviceProviderFactory

impl IsA<Object> for DeviceProviderFactory

impl Send for DeviceProviderFactory

impl Sync for DeviceProviderFactory