[−][src]Trait gstreamer_pbutils::prelude::DeviceExt
Required methods
fn create_element(&self, name: Option<&str>) -> Result<Element, BoolError>
Creates the element with all of the required parameters set to use this device.
name
name of new element, or None
to automatically
create a unique name.
Returns
a new Element
configured to use
this device
fn get_caps(&self) -> Option<Caps>
Getter for the Caps
that this device supports.
Returns
The Caps
supported by this device. Unref with
Caps::unref
when done.
fn get_device_class(&self) -> GString
Gets the "class" of a device. This is a "/" separated list of
classes that represent this device. They are a subset of the
classes of the DeviceProvider
that produced this device.
Returns
The device class. Free with g_free
after use.
fn get_display_name(&self) -> GString
fn get_properties(&self) -> Option<Structure>
Gets the extra properties of a device.
Returns
The extra properties or None
when there are none.
Free with Structure::free
after use.
fn has_classes(&self, classes: &str) -> bool
Check if self
matches all of the given classes
classes
a "/"-separated list of device classes to match, only match if all classes are matched
Returns
true
if self
matches.
fn has_classesv(&self, classes: &[&str]) -> bool
Check if factory
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.
fn reconfigure_element<P>(&self, element: &P) -> Result<(), BoolError> where
P: IsA<Element>,
P: IsA<Element>,
Tries to reconfigure an existing element to use the device. If this
function fails, then one must destroy the element and create a new one
using DeviceExt::create_element
.
Note: This should only be implemented for elements can change their device in the PLAYING state.
element
a Element
Returns
true
if the element could be reconfigured to use this device,
false
otherwise.
fn connect_removed<F>(&self, f: F) -> SignalHandlerId where
F: 'static + Send + Sync + Fn(&Self),
F: 'static + Send + Sync + Fn(&Self),
Implementors
impl<O> DeviceExt for O where
O: IsA<Device>,
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O: IsA<Device>,
fn create_element(&self, name: Option<&str>) -> Result<Element, BoolError>
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fn get_caps(&self) -> Option<Caps>
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fn get_device_class(&self) -> GString
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fn get_display_name(&self) -> GString
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fn get_properties(&self) -> Option<Structure>
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fn has_classes(&self, classes: &str) -> bool
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fn has_classesv(&self, classes: &[&str]) -> bool
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fn reconfigure_element<P>(&self, element: &P) -> Result<(), BoolError> where
P: IsA<Element>,
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P: IsA<Element>,
fn connect_removed<F>(&self, f: F) -> SignalHandlerId where
F: 'static + Send + Sync + Fn(&O),
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F: 'static + Send + Sync + Fn(&O),