Struct gstreamer_editing_services::Layer
source · #[repr(transparent)]pub struct Layer { /* private fields */ }Expand description
Layer-s are responsible for collecting and ordering Clip-s.
A layer within a timeline will have an associated priority,
corresponding to their index within the timeline. A layer with the
index/priority 0 will have the highest priority and the layer with the
largest index will have the lowest priority (the order of priorities,
in this sense, is the reverse of the numerical ordering of the
indices). TimelineExt::move_layer() should be used if you wish to
change how layers are prioritised in a timeline.
Layers with higher priorities will have their content priorities over content from lower priority layers, similar to how layers are used in image editing. For example, if two separate layers both display video content, then the layer with the higher priority will have its images shown first. The other layer will only have its image shown if the higher priority layer has no content at the given playtime, or is transparent in some way. Audio content in separate layers will simply play in addition.
Properties
auto-transition
Whether to automatically create a TransitionClip whenever two
Source-s that both belong to a Clip in the layer overlap.
See Timeline for what counts as an overlap.
When a layer is added to a Timeline, if this property is left as
false, but the timeline’s auto-transition is true, it
will be set to true as well.
Readable | Writeable
priority
The priority of the layer in the Timeline. 0 is the highest
priority. Conceptually, a timeline is a stack of layers,
and the priority of the layer represents its position in the stack. Two
layers should not have the same priority within a given GESTimeline.
Note that the timeline needs to be committed (with ges_timeline_commit)
for the change to be taken into account.
Readable | Writeable
Signals
active-changed
Will be emitted whenever the layer is activated or deactivated
for some Track. See LayerExt::set_active_for_tracks().
clip-added
Will be emitted after the clip is added to the layer.
clip-removed
Will be emitted after the clip is removed from the layer.
MetaContainer
notify-meta
This is emitted for a meta container whenever the metadata under one
of its fields changes, is set for the first time, or is removed. In
the latter case, value will be None.
Detailed
Implements
Implementations§
Trait Implementations§
source§impl HasParamSpec for Layer
impl HasParamSpec for Layer
source§impl Ord for Layer
impl Ord for Layer
source§impl<OT: ObjectType> PartialEq<OT> for Layer
impl<OT: ObjectType> PartialEq<OT> for Layer
source§impl<OT: ObjectType> PartialOrd<OT> for Layer
impl<OT: ObjectType> PartialOrd<OT> for Layer
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 Layer
impl StaticType for Layer
source§fn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of
Self.impl Eq for Layer
impl IsA<Extractable> for Layer
impl IsA<MetaContainer> for Layer
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impl RefUnwindSafe for Layer
impl !Send for Layer
impl !Sync for Layer
impl Unpin for Layer
impl UnwindSafe for Layer
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