[][src]Struct gstreamer::GhostPad

pub struct GhostPad(_, _);

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, GhostPad::new is the function to use to get a ghost-pad. Otherwise one can use GhostPad::new_no_target 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::object::ObjectExt, ProxyPadExtManual, PadExtManual

Methods

impl GhostPad[src]

pub fn activate_mode_default<P: IsA<GhostPad>, Q: IsA<Object>>(
    pad: &P,
    parent: Option<&Q>,
    mode: PadMode,
    active: bool
) -> Result<(), BoolError>
[src]

Invoke the default activate mode function of a ghost pad.

pad

the Pad to activate or deactivate.

parent

the parent of pad or None

mode

the requested activation mode

active

whether the pad should be active or not.

Returns

true if the operation was successful.

pub fn internal_activate_mode_default<P: IsA<GhostPad>, Q: IsA<Object>>(
    pad: &P,
    parent: Option<&Q>,
    mode: PadMode,
    active: bool
) -> Result<(), BoolError>
[src]

Invoke the default activate mode function of a proxy pad that is owned by a ghost pad.

pad

the Pad to activate or deactivate.

parent

the parent of pad or None

mode

the requested activation mode

active

whether the pad should be active or not.

Returns

true if the operation was successful.

pub fn new(name: Option<&str>, direction: PadDirection) -> Self[src]

Create a new ghostpad with target as the target. The direction will be taken from the target pad. target must be unlinked.

Will ref the target.

name

the name of the new pad, or None to assign a default name

target

the pad to ghost.

Returns

a new Pad, or None in case of an error.

pub fn builder(name: Option<&str>, direction: PadDirection) -> PadBuilder<Self>[src]

pub fn from_static_template(
    templ: &StaticPadTemplate,
    name: Option<&str>
) -> Self
[src]

pub fn builder_with_static_template(
    templ: &StaticPadTemplate,
    name: Option<&str>
) -> PadBuilder<Self>
[src]

pub fn from_template(templ: &PadTemplate, name: Option<&str>) -> Self[src]

pub fn builder_with_template(
    templ: &PadTemplate,
    name: Option<&str>
) -> PadBuilder<Self>
[src]

pub fn with_target<P: IsA<Pad>>(
    name: Option<&str>,
    target: &P
) -> Result<Self, BoolError>
[src]

pub fn from_template_with_target<P: IsA<Pad>>(
    templ: &PadTemplate,
    name: Option<&str>,
    target: &P
) -> Result<Self, BoolError>
[src]

Trait Implementations

impl Clone for GhostPad[src]

impl Debug for GhostPad[src]

impl Eq for GhostPad[src]

impl Hash for GhostPad[src]

impl IsA<Object> for GhostPad[src]

impl IsA<Pad> for GhostPad[src]

impl IsA<ProxyPad> for GhostPad[src]

impl Ord for GhostPad[src]

impl<T: ObjectType> PartialEq<T> for GhostPad[src]

impl<T: ObjectType> PartialOrd<T> for GhostPad[src]

impl Send for GhostPad[src]

impl StaticType for GhostPad[src]

impl Sync for GhostPad[src]

Auto Trait Implementations

impl RefUnwindSafe for GhostPad

impl Unpin for GhostPad

impl UnwindSafe for GhostPad

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<Super, Sub> CanDowncast<Sub> for Super where
    Sub: IsA<Super>,
    Super: IsA<Super>, 
[src]

impl<T> Cast for T where
    T: ObjectType
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ObjectExt for T where
    T: ObjectType
[src]

impl<'a, T> ToGlibContainerFromSlice<'a, *const GList> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
[src]

impl<'a, T> ToGlibContainerFromSlice<'a, *const GPtrArray> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
[src]

impl<'a, T> ToGlibContainerFromSlice<'a, *mut GArray> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
[src]

impl<'a, T> ToGlibContainerFromSlice<'a, *mut GList> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
[src]

impl<'a, T> ToGlibContainerFromSlice<'a, *mut GPtrArray> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T> ToSendValue for T where
    T: ToValue + SetValue + Send + ?Sized
[src]

impl<T> ToValue for T where
    T: SetValue + ?Sized
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.