[−][src]Struct gstreamer::ElementFactory
ElementFactory
is used to create instances of elements. A
GstElementFactory can be added to a Plugin
as it is also a
PluginFeature
.
Use the ElementFactory::find
and ElementFactory::create
functions to create element instances or use ElementFactory::make
as a
convenient shortcut.
The following code example shows you how to create a GstFileSrc element.
Using an element factory
#include <gst/gst.h>
GstElement *src;
GstElementFactory *srcfactory;
gst_init (&argc, &argv);
srcfactory = gst_element_factory_find ("filesrc");
g_return_if_fail (srcfactory != NULL);
src = gst_element_factory_create (srcfactory, "src");
g_return_if_fail (src != NULL);
...
Implements
PluginFeatureExt
, GstObjectExt
, glib::object::ObjectExt
, PluginFeatureExtManual
Implementations
impl ElementFactory
[src]
pub fn can_sink_all_caps(&self, caps: &Caps) -> bool
[src]
Checks if the factory can sink all possible capabilities.
caps
the caps to check
Returns
true
if the caps are fully compatible.
pub fn can_sink_any_caps(&self, caps: &Caps) -> bool
[src]
Checks if the factory can sink any possible capability.
caps
the caps to check
Returns
true
if the caps have a common subset.
pub fn can_src_all_caps(&self, caps: &Caps) -> bool
[src]
Checks if the factory can src all possible capabilities.
caps
the caps to check
Returns
true
if the caps are fully compatible.
pub fn can_src_any_caps(&self, caps: &Caps) -> bool
[src]
Checks if the factory can src any possible capability.
caps
the caps to check
Returns
true
if the caps have a common subset.
pub fn create(&self, name: Option<&str>) -> Result<Element, BoolError>
[src]
Create a new element of the type defined by the given elementfactory. It will be given the name supplied, since all elements require a name as their first argument.
name
name of new element, or None
to automatically create
a unique name
Returns
new Element
or None
if the element couldn't be created
pub fn get_element_type(&self) -> Type
[src]
Get the glib::Type
for elements managed by this factory. The type can
only be retrieved if the element factory is loaded, which can be
assured with PluginFeatureExt::load
.
Returns
the glib::Type
for elements managed by this factory or 0 if
the factory is not loaded.
pub fn get_metadata(&self, key: &str) -> Option<GString>
[src]
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 get_metadata_keys(&self) -> Vec<GString>
[src]
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 get_num_pad_templates(&self) -> u32
[src]
pub fn get_static_pad_templates(&self) -> Vec<StaticPadTemplate>
[src]
pub fn get_uri_protocols(&self) -> Vec<GString>
[src]
Gets a None
-terminated array of protocols this element supports or None
if
no protocols are supported. You may not change the contents of the returned
array, as it is still owned by the element factory. Use g_strdupv
to
make a copy of the protocol string array if you need to.
Returns
the supported protocols
or None
pub fn get_uri_type(&self) -> URIType
[src]
Gets the type of URIs the element supports or URIType::Unknown
if none.
Returns
type of URIs this element supports
pub fn has_interface(&self, interfacename: &str) -> bool
[src]
Check if self
implements the interface with name interfacename
.
interfacename
an interface name
Returns
true
when self
implement the interface.
pub fn list_is_type(&self, type_: ElementFactoryListType) -> bool
[src]
Check if self
is of the given types.
type_
a ElementFactoryListType
Returns
true
if self
is of type_
.
pub fn find(name: &str) -> Option<ElementFactory>
[src]
Search for an element factory of the given name. Refs the returned element factory; caller is responsible for unreffing.
name
name of factory to find
Returns
ElementFactory
if found,
None
otherwise
pub fn list_filter(
list: &[ElementFactory],
caps: &Caps,
direction: PadDirection,
subsetonly: bool
) -> Vec<ElementFactory>
[src]
list: &[ElementFactory],
caps: &Caps,
direction: PadDirection,
subsetonly: bool
) -> Vec<ElementFactory>
Filter out all the elementfactories in list
that can handle caps
in
the given direction.
If subsetonly
is true
, then only the elements whose pads templates
are a complete superset of caps
will be returned. Else any element
whose pad templates caps can intersect with caps
will be returned.
list
a glib::List
of
ElementFactory
to filter
caps
a Caps
direction
a PadDirection
to filter on
subsetonly
whether to filter on caps subsets or not.
Returns
a glib::List
of
ElementFactory
elements that match the given requisites.
Use PluginFeature::list_free
after usage.
pub fn list_get_elements(
type_: ElementFactoryListType,
minrank: Rank
) -> Vec<ElementFactory>
[src]
type_: ElementFactoryListType,
minrank: Rank
) -> Vec<ElementFactory>
Get a list of factories that match the given type_
. Only elements
with a rank greater or equal to minrank
will be returned.
The list of factories is returned by decreasing rank.
type_
a ElementFactoryListType
minrank
Minimum rank
Returns
a glib::List
of
ElementFactory
elements. Use PluginFeature::list_free
after
usage.
pub fn make(factoryname: &str, name: Option<&str>) -> Result<Element, BoolError>
[src]
Create a new element of the type defined by the given element factory.
If name is None
, then the element will receive a guaranteed unique name,
consisting of the element factory name and a number.
If name is given, it will be given the name supplied.
factoryname
a named factory to instantiate
name
name of new element, or None
to automatically create
a unique name
Returns
new Element
or None
if unable to create element
Trait Implementations
impl Clone for ElementFactory
[src]
fn clone(&self) -> ElementFactory
[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl Debug for ElementFactory
[src]
impl Eq for ElementFactory
[src]
impl Hash for ElementFactory
[src]
fn hash<__H: Hasher>(&self, state: &mut __H)
[src]
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
impl IsA<Object> for ElementFactory
[src]
impl IsA<PluginFeature> for ElementFactory
[src]
impl Ord for ElementFactory
[src]
fn cmp(&self, other: &ElementFactory) -> Ordering
[src]
#[must_use]fn max(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn min(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn clamp(self, min: Self, max: Self) -> Self
[src]
impl<T: ObjectType> PartialEq<T> for ElementFactory
[src]
impl<T: ObjectType> PartialOrd<T> for ElementFactory
[src]
fn partial_cmp(&self, other: &T) -> Option<Ordering>
[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
impl Send for ElementFactory
[src]
impl StaticType for ElementFactory
[src]
fn static_type() -> Type
[src]
impl Sync for ElementFactory
[src]
Auto Trait Implementations
impl RefUnwindSafe for ElementFactory
impl Unpin for ElementFactory
impl UnwindSafe for ElementFactory
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
impl<Super, Sub> CanDowncast<Sub> for Super where
Sub: IsA<Super>,
Super: IsA<Super>,
[src]
Sub: IsA<Super>,
Super: IsA<Super>,
impl<T> Cast for T where
T: ObjectType,
[src]
T: ObjectType,
fn upcast<T>(self) -> T where
Self: IsA<T>,
T: ObjectType,
[src]
Self: IsA<T>,
T: ObjectType,
fn upcast_ref<T>(&self) -> &T where
Self: IsA<T>,
T: ObjectType,
[src]
Self: IsA<T>,
T: ObjectType,
fn downcast<T>(self) -> Result<T, Self> where
Self: CanDowncast<T>,
T: ObjectType,
[src]
Self: CanDowncast<T>,
T: ObjectType,
fn downcast_ref<T>(&self) -> Option<&T> where
Self: CanDowncast<T>,
T: ObjectType,
[src]
Self: CanDowncast<T>,
T: ObjectType,
fn dynamic_cast<T>(self) -> Result<T, Self> where
T: ObjectType,
[src]
T: ObjectType,
fn dynamic_cast_ref<T>(&self) -> Option<&T> where
T: ObjectType,
[src]
T: ObjectType,
unsafe fn unsafe_cast<T>(self) -> T where
T: ObjectType,
[src]
T: ObjectType,
unsafe fn unsafe_cast_ref<T>(&self) -> &T where
T: ObjectType,
[src]
T: ObjectType,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T> ObjectExt for T where
T: ObjectType,
[src]
T: ObjectType,
fn is<U>(&self) -> bool where
U: StaticType,
[src]
U: StaticType,
fn get_type(&self) -> Type
[src]
fn get_object_class(&self) -> &ObjectClass
[src]
fn set_properties(
&self,
property_values: &[(&str, &dyn ToValue)]
) -> Result<(), BoolError>
[src]
&self,
property_values: &[(&str, &dyn ToValue)]
) -> Result<(), BoolError>
fn set_property<'a, N>(
&self,
property_name: N,
value: &dyn ToValue
) -> Result<(), BoolError> where
N: Into<&'a str>,
[src]
&self,
property_name: N,
value: &dyn ToValue
) -> Result<(), BoolError> where
N: Into<&'a str>,
fn get_property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where
N: Into<&'a str>,
[src]
N: Into<&'a str>,
unsafe fn set_qdata<QD>(&self, key: Quark, value: QD) where
QD: 'static,
[src]
QD: 'static,
unsafe fn get_qdata<QD>(&self, key: Quark) -> Option<&QD> where
QD: 'static,
[src]
QD: 'static,
unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD> where
QD: 'static,
[src]
QD: 'static,
unsafe fn set_data<QD>(&self, key: &str, value: QD) where
QD: 'static,
[src]
QD: 'static,
unsafe fn get_data<QD>(&self, key: &str) -> Option<&QD> where
QD: 'static,
[src]
QD: 'static,
unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD> where
QD: 'static,
[src]
QD: 'static,
fn block_signal(&self, handler_id: &SignalHandlerId)
[src]
fn unblock_signal(&self, handler_id: &SignalHandlerId)
[src]
fn stop_signal_emission(&self, signal_name: &str)
[src]
fn disconnect(&self, handler_id: SignalHandlerId)
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
F: 'static + Send + Sync + Fn(&T, &ParamSpec),
[src]
F: 'static + Send + Sync + Fn(&T, &ParamSpec),
unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec),
[src]
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec),
fn notify<'a, N>(&self, property_name: N) where
N: Into<&'a str>,
[src]
N: Into<&'a str>,
fn notify_by_pspec(&self, pspec: &ParamSpec)
[src]
fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
N: Into<&'a str>,
[src]
N: Into<&'a str>,
fn get_property_type<'a, N>(&self, property_name: N) -> Option<Type> where
N: Into<&'a str>,
[src]
N: Into<&'a str>,
fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>,
[src]
N: Into<&'a str>,
fn list_properties(&self) -> Vec<ParamSpec>
[src]
fn connect<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
N: Into<&'a str>,
[src]
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
N: Into<&'a str>,
fn connect_local<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + 'static,
N: Into<&'a str>,
[src]
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + 'static,
N: Into<&'a str>,
unsafe fn connect_unsafe<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value>,
N: Into<&'a str>,
[src]
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value>,
N: Into<&'a str>,
fn emit<'a, N>(
&self,
signal_name: N,
args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>,
[src]
&self,
signal_name: N,
args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>,
fn downgrade(&self) -> WeakRef<T>
[src]
fn bind_property<'a, O, N, M>(
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
M: Into<&'a str>,
N: Into<&'a str>,
O: ObjectType,
[src]
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
M: Into<&'a str>,
N: Into<&'a str>,
O: ObjectType,
fn ref_count(&self) -> u32
[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *const GList> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
[src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
[src]
t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
fn to_glib_container_from_slice(
_t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
[src]
_t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
fn to_glib_full_from_slice(_t: &[T]) -> *const GList
[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *const GPtrArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
[src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
[src]
t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
fn to_glib_container_from_slice(
_t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
[src]
_t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
fn to_glib_full_from_slice(_t: &[T]) -> *const GPtrArray
[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
[src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<Array>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
[src]
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
[src]
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GArray
[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GList> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
[src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
[src]
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
[src]
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GList
[src]
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GPtrArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
[src]
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
[src]
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
[src]
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GPtrArray
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
[src]
impl<T> ToSendValue for T where
T: ToValue + SetValue + Send + ?Sized,
[src]
T: ToValue + SetValue + Send + ?Sized,
fn to_send_value(&self) -> SendValue
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impl<T> ToValue for T where
T: SetValue + ?Sized,
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T: SetValue + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,