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GstElement * | (*GESCreateElementForGapFunc) () |
GESTrack * | ges_track_new () |
gboolean | ges_track_add_element () |
void | ges_track_set_restriction_caps () |
void | ges_track_update_restriction_caps () |
gboolean | ges_track_remove_element () |
const GstCaps * | ges_track_get_caps () |
GList * | ges_track_get_elements () |
gboolean | ges_track_commit () |
gboolean | ges_track_get_mixing () |
void | ges_track_set_mixing () |
GstCaps * | caps | Read / Write / Construct Only |
guint64 | duration | Read |
gboolean | mixing | Read / Write / Construct |
GstCaps * | restriction-caps | Read / Write |
GESTrackType | track-type | Read / Write / Construct Only |
void | commited | Run Last |
void | track-element-added | Run First |
void | track-element-removed | Run First |
Corresponds to one output format (i.e. audio OR video).
Contains the compatible TrackElement(s).
GstElement *
(*GESCreateElementForGapFunc) (GESTrack *track
);
A function that will be called to create the GstElement that will be used
as a source to fill the gaps in track
.
A GstElement (must be a source) that will be used to
fill the gaps (periods of time in track
that containes no source).
GESTrack * ges_track_new (GESTrackType type
,GstCaps *caps
);
Creates a new GESTrack with the given type
and caps
.
The newly created track will steal a reference to the caps. If you wish to use those caps elsewhere, you will have to take an extra reference.
gboolean ges_track_add_element (GESTrack *track
,GESTrackElement *object
);
Adds the given object to the track. Sets the object's controlling track,
and thus takes ownership of the object
.
An object can only be added to one track.
void ges_track_set_restriction_caps (GESTrack *track
,const GstCaps *caps
);
Sets the given caps
as the caps the track has to output.
void ges_track_update_restriction_caps (GESTrack *track
,const GstCaps *caps
);
Updates the restriction caps by modifying all the fields present in caps
in the original restriction caps. If for example the current restriction caps
are video/x-raw, format=I420, width=360 and caps
is video/x-raw, format=RGB,
the restriction caps will be updated to video/x-raw, format=RGB, width=360.
Modification happens for each structure in the new caps, and one can add new fields or structures through that function.
gboolean ges_track_remove_element (GESTrack *track
,GESTrackElement *object
);
Removes the object from the track and unparents it.
Unparenting it means the reference owned by track
on the object
will be
removed. If you wish to use the object
after this function, make sure you
call gst_object_ref()
before removing it from the track
.
const GstCaps *
ges_track_get_caps (GESTrack *track
);
Get the GstCaps this track is configured to output.
GList *
ges_track_get_elements (GESTrack *track
);
Gets the GESTrackElement contained in track
the list of GESTrackElement present in the Track sorted by priority and start.
[transfer full][element-type GESTrackElement]
gboolean
ges_track_commit (GESTrack *track
);
Commits all the pending changes of the TrackElement contained in the track.
When timing changes happen in a timeline, the changes are not directly done inside NLE. This method needs to be called so any changes on a clip contained in the timeline actually happen at the media processing level.
gboolean
ges_track_get_mixing (GESTrack *track
);
Gets if the underlying NleComposition contains an expandable mixer.
“caps”
property“caps” GstCaps *
Caps used to filter/choose the output stream. This is generally set to a generic set of caps like 'video/x-raw' for raw video.
Default value: GST_CAPS_ANY.
Flags: Read / Write / Construct Only
“duration”
property“duration” guint64
Current duration of the track
Default value: O
Flags: Read
Default value: 1000000000
“mixing”
property“mixing” gboolean
Whether layer mixing is activated or not on the track.
Flags: Read / Write / Construct
Default value: TRUE
“restriction-caps”
property“restriction-caps” GstCaps *
Caps used to filter/choose the output stream.
Default value: GST_CAPS_ANY.
Flags: Read / Write
“track-type”
property“track-type” GESTrackType
Type of stream the track outputs. This is used when creating the GESTrack to specify in generic terms what type of content will be outputted.
It also serves as a 'fast' way to check what type of data will be outputted from the GESTrack without having to actually check the GESTrack's caps property.
Flags: Read / Write / Construct Only
Default value: GES_TRACK_TYPE_CUSTOM
“track-element-added”
signalvoid user_function (GESTrack *object, GESTrackElement *effect, gpointer user_data)
Will be emitted after a track element was added to the track.
object |
the GESTrack |
|
effect |
the GESTrackElement that was added. |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run First
“track-element-removed”
signalvoid user_function (GESTrack *object, GESTrackElement *effect, gpointer user_data)
Will be emitted after a track element was removed from the track.
object |
the GESTrack |
|
effect |
the GESTrackElement that was removed. |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run First