Struct gstreamer::DeviceProviderFactory

#[repr(transparent)]
pub struct DeviceProviderFactory { /* private fields */ }

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 find() and get() functions to create device provider instances or use by_name() as a convenient shortcut.

Implements

PluginFeatureExt, GstObjectExt, glib::ObjectExt, PluginFeatureExtManual

Implementations

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 device_provider_type(&self) -> Type

Get the GType 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 PluginFeatureExtManual::load().

Returns

the GType for device providers managed by this factory.

pub fn metadata_keys(&self) -> Vec<GString>

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(&self, classes: Option<&str>) -> 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 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

impl DeviceProviderFactory

pub fn factories(minrank: Rank) -> List<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 GList of DeviceProviderFactory device providers. Use gst_plugin_feature_list_free() after usage.

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

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.

pub fn longname(&self) -> &str

pub fn klass(&self) -> &str

pub fn description(&self) -> &str

pub fn author(&self) -> &str

pub fn documentation_uri(&self) -> Option<&str>

pub fn icon_name(&self) -> Option<&str>

Trait Implementations

impl Clone for DeviceProviderFactory

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DeviceProviderFactory

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

Formats the value using the given formatter.

impl HasParamSpec for DeviceProviderFactory

type ParamSpec = ParamSpecObject

type SetValue = DeviceProviderFactory

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for DeviceProviderFactory

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

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 DeviceProviderFactory

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl ParentClassIs for DeviceProviderFactory

type Parent = PluginFeature

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

fn eq(&self, other: &OT) -> 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<OT: ObjectType> PartialOrd<OT> for DeviceProviderFactory

fn partial_cmp(&self, other: &OT) -> 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 StaticType for DeviceProviderFactory

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for DeviceProviderFactory

impl IsA<Object> for DeviceProviderFactory

impl IsA<PluginFeature> for DeviceProviderFactory

impl Send for DeviceProviderFactory

impl Sync for DeviceProviderFactory