#[repr(transparent)]pub struct GhostPad { /* private fields */ }Expand description
GhostPads are useful when organizing pipelines with Bin like elements.
The idea here is to create hierarchical element graphs. The bin element
contains a sub-graph. Now one would like to treat the bin-element like any
other Element. This is where GhostPads come into play. A GhostPad acts as
a proxy for another pad. Thus the bin can have sink and source ghost-pads
that are associated with sink and source pads of the child elements.
If the target pad is known at creation time, with_target() is the
function to use to get a ghost-pad. Otherwise one can use new()
to create the ghost-pad and use GhostPadExt::set_target() to establish the
association later on.
Note that GhostPads add overhead to the data processing of a pipeline.
Implements
GhostPadExt, ProxyPadExt, PadExt, GstObjectExt, glib::ObjectExt, [ProxyPadExtManual][trait@crate::prelude::ProxyPadExtManual], PadExtManual
Implementations§
source§impl GhostPad
impl GhostPad
sourcepub fn activate_mode_default<P: IsA<GhostPad>>(
pad: &P,
parent: Option<&impl IsA<Object>>,
mode: PadMode,
active: bool
) -> Result<(), BoolError>
pub fn activate_mode_default<P: IsA<GhostPad>>(
pad: &P,
parent: Option<&impl IsA<Object>>,
mode: PadMode,
active: bool
) -> Result<(), BoolError>
sourcepub fn internal_activate_mode_default<P: IsA<GhostPad>>(
pad: &P,
parent: Option<&impl IsA<Object>>,
mode: PadMode,
active: bool
) -> Result<(), BoolError>
pub fn internal_activate_mode_default<P: IsA<GhostPad>>(
pad: &P,
parent: Option<&impl IsA<Object>>,
mode: PadMode,
active: bool
) -> Result<(), BoolError>
sourcepub fn new(name: Option<&str>, direction: PadDirection) -> Self
pub fn new(name: Option<&str>, direction: PadDirection) -> Self
Create a new ghostpad without a target with the given direction.
A target can be set on the ghostpad later with the
GhostPadExt::set_target() function.
The created ghostpad will not have a padtemplate.
name
the name of the new pad, or None to assign a default name.
dir
the direction of the ghostpad
Returns
pub fn builder(name: Option<&str>, direction: PadDirection) -> PadBuilder<Self>
pub fn from_static_template(
templ: &StaticPadTemplate,
name: Option<&str>
) -> Self
pub fn builder_with_static_template(
templ: &StaticPadTemplate,
name: Option<&str>
) -> PadBuilder<Self>
sourcepub fn from_template(templ: &PadTemplate, name: Option<&str>) -> Self
pub fn from_template(templ: &PadTemplate, name: Option<&str>) -> Self
pub fn builder_with_template(
templ: &PadTemplate,
name: Option<&str>
) -> PadBuilder<Self>
sourcepub fn from_template_with_target<P: IsA<Pad>>(
templ: &PadTemplate,
name: Option<&str>,
target: &P
) -> Result<Self, BoolError>
pub fn from_template_with_target<P: IsA<Pad>>(
templ: &PadTemplate,
name: Option<&str>,
target: &P
) -> Result<Self, BoolError>
Create a new ghostpad with target as the target. The direction will be taken
from the target pad. The template used on the ghostpad will be template.
Will ref the target.
name
the name of the new pad, or None to assign a default name.
target
the pad to ghost.
templ
the PadTemplate to use on the ghostpad.
Returns
Trait Implementations§
source§impl HasParamSpec for GhostPad
impl HasParamSpec for GhostPad
source§impl<T: GhostPadImpl> IsSubclassable<T> for GhostPad
impl<T: GhostPadImpl> IsSubclassable<T> for GhostPad
source§fn class_init(class: &mut Class<Self>)
fn class_init(class: &mut Class<Self>)
Override the virtual methods of this class for the given subclass and do other class
initialization. Read more
source§fn instance_init(instance: &mut InitializingObject<T>)
fn instance_init(instance: &mut InitializingObject<T>)
Instance specific initialization. Read more
source§impl Ord for GhostPad
impl Ord for GhostPad
source§impl<OT: ObjectType> PartialEq<OT> for GhostPad
impl<OT: ObjectType> PartialEq<OT> for GhostPad
source§impl<OT: ObjectType> PartialOrd<OT> for GhostPad
impl<OT: ObjectType> PartialOrd<OT> for GhostPad
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self and other) and is used by the <=
operator. Read moresource§impl StaticType for GhostPad
impl StaticType for GhostPad
source§fn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of
Self.impl Eq for GhostPad
impl IsA<Object> for GhostPad
impl IsA<Pad> for GhostPad
impl IsA<ProxyPad> for GhostPad
impl Send for GhostPad
impl Sync for GhostPad
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