pub trait GESTrackExt: 'static {
Show 26 methods fn add_element(
        &self,
        object: &impl IsA<TrackElement>
    ) -> Result<(), BoolError>;
fn add_element_full(
        &self,
        object: &impl IsA<TrackElement>
    ) -> Result<(), Error>;
fn commit(&self) -> bool;
fn caps(&self) -> Option<Caps>;
fn elements(&self) -> Vec<TrackElement>
Notable traits for Vec<u8, A>
impl<A> Write for Vec<u8, A> where
    A: Allocator
;
fn is_mixing(&self) -> bool;
fn restriction_caps(&self) -> Option<Caps>;
fn timeline(&self) -> Option<Timeline>;
fn remove_element(
        &self,
        object: &impl IsA<TrackElement>
    ) -> Result<(), BoolError>;
fn remove_element_full(
        &self,
        object: &impl IsA<TrackElement>
    ) -> Result<(), Error>;
fn set_mixing(&self, mixing: bool);
fn set_restriction_caps(&self, caps: &Caps);
fn set_timeline(&self, timeline: &impl IsA<Timeline>);
fn update_restriction_caps(&self, caps: &Caps);
fn duration(&self) -> u64;
fn id(&self) -> Option<GString>;
fn set_id(&self, id: Option<&str>);
fn get_property_restriction_caps(&self) -> Option<Caps>;
fn track_type(&self) -> TrackType;
fn connect_commited<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
fn connect_track_element_added<F: Fn(&Self, &TrackElement) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
fn connect_track_element_removed<F: Fn(&Self, &TrackElement) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
fn connect_duration_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
fn connect_id_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
fn connect_mixing_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
fn connect_restriction_caps_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
}
Expand description

Trait containing all Track methods.

Implementors

AudioTrack, Track, VideoTrack

Required methods

See add_element(), which also gives an error.

object

The element to add

Returns

true if object was successfully added to self.

This is supported on crate feature v1_18 only.

Adds the given track element to the track, which takes ownership of the element.

Note that this can fail if it would break a configuration rule of the track’s Timeline.

Note that a TrackElement can only be added to one track.

object

The element to add

Returns

true if object was successfully added to self.

Commits all the pending changes for the elements contained in the track.

When changes are made to the timing or priority of elements within a track, they are not directly executed for the underlying nlecomposition and its children. This method will finally execute these changes so they are reflected in the data output of the track.

Any pending changes will be executed in the backend. The signal::Timeline::commited signal will be emitted once this has completed.

Note that TimelineExt::commit() will call this method on all of its tracks, so you are unlikely to need to use this directly.

Returns

true if pending changes were committed, or false if nothing needed to be committed.

Get the property::Track::caps of the track.

Returns

The caps of self.

Gets the track elements contained in the track. The returned list is sorted by the element’s property::TimelineElement::priority and property::TimelineElement::start.

Returns

A list of all the TrackElement-s in self.

Gets the property::Track::mixing of the track.

Returns

Whether self is mixing.

This is supported on crate feature v1_18 only.

Gets the property::Track::restriction-caps of the track.

Returns

The restriction-caps of self.

Get the timeline this track belongs to.

Returns

The timeline that self belongs to, or None if it does not belong to a timeline.

See remove_element_full(), which also returns an error.

object

The element to remove

Returns

true if object was successfully removed from self.

This is supported on crate feature v1_18 only.

Removes the given track element from the track, which revokes ownership of the element.

object

The element to remove

Returns

true if object was successfully removed from self.

Sets the property::Track::mixing for the track.

mixing

Whether self should be mixing

Sets the property::Track::restriction-caps for the track.

NOTE: Restriction caps are not taken into account when using property::Pipeline::mode=PipelineFlags::SMART_RENDER.

caps

The new restriction-caps for self

Informs the track that it belongs to the given timeline. Calling this does not actually add the track to the timeline. For that, you should use TimelineExt::add_track(), which will also take care of informing the track that it belongs to the timeline. As such, there is no need for you to call this method.

Updates the property::Track::restriction-caps of the track using the fields found in the given caps. Each of the gst::Structure-s in caps is compared against the existing structure with the same index in the current property::Track::restriction-caps. If there is no corresponding existing structure at that index, then the new structure is simply copied to that index. Otherwise, any fields in the new structure are copied into the existing structure. This will replace existing values, and may introduce new ones, but any fields ‘missing’ in the new structure are left unchanged in the existing structure.

For example, if the existing property::Track::restriction-caps are “video/x-raw, width=480, height=360”, and the updating caps is “video/x-raw, format=I420, width=500; video/x-bayer, width=400”, then the new property::Track::restriction-caps after calling this will be “video/x-raw, width=500, height=360, format=I420; video/x-bayer, width=400”.

caps

The caps to update the restriction-caps with

Current duration of the track

Default value: O

This is supported on crate feature v1_18 only.

The nlecomposition:id of the underlying nlecomposition.

This is supported on crate feature v1_18 only.

The nlecomposition:id of the underlying nlecomposition.

The capabilities that specifies the final output format of the Track. For example, for a video track, it would specify the height, width, framerate and other properties of the stream.

You may change this property after the track has been added to a Timeline, but it must remain compatible with the track’s property::Track::caps.

Default value: GST_CAPS_ANY.

The track type of the track. This controls the type of TrackElement-s that can be added to the track. This should match with the track’s property::Track::caps.

Once a track has been added to a Timeline, you should not change this.

This signal will be emitted once the changes initiated by commit() have been executed in the backend. In particular, this will be emitted whenever the underlying nlecomposition has been committed (see nlecomposition::commited).

Will be emitted after a track element is added to the track.

effect

The element that was added

Will be emitted after a track element is removed from the track.

effect

The element that was removed

This is supported on crate feature v1_18 only.

Implementors