Class
ClapperFeature
Description [src]
class Clapper.Feature : Gst.Object
{
/* No available fields */
}A base class for creating new features for the player.
Feature objects are meant for adding additional functionalities that are supposed to either act on playback/properties changes and/or change them themselves due to some external signal/event.
For reacting to playback changes subclass should override this class
virtual functions logic, while for controlling playback implementation
may call gst_object_get_parent() to acquire a weak reference on
a parent ClapperPlayer object feature was added to.
Properties
Properties inherited from GstObject (2)
Gst.Object:name
Gst.Object:parent
The parent of the object. Please note, that when changing the ‘parent’
property, we don’t emit GObject::notify and GstObject::deep-notify
signals due to locking issues. In some cases one can use
GstBin::element-added or GstBin::element-removed signals on the parent to
achieve a similar effect.
Signals
Signals inherited from GstObject (1)
GstObject::deep-notify
The deep notify signal is used to be notified of property changes. It is typically attached to the toplevel bin to receive notifications from all the elements contained in that bin.
Signals inherited from GObject (1)
GObject::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.
Class structure
struct ClapperFeatureClass {
GstObjectClass parent_class;
gboolean (* prepare) (
ClapperFeature* feature
);
gboolean (* unprepare) (
ClapperFeature* feature
);
void (* property_changed) (
ClapperFeature* feature,
GParamSpec* pspec
);
void (* state_changed) (
ClapperFeature* feature,
ClapperPlayerState state
);
void (* position_changed) (
ClapperFeature* feature,
gdouble position
);
void (* speed_changed) (
ClapperFeature* feature,
gdouble speed
);
void (* volume_changed) (
ClapperFeature* feature,
gdouble volume
);
void (* mute_changed) (
ClapperFeature* feature,
gboolean mute
);
void (* played_item_changed) (
ClapperFeature* feature,
ClapperMediaItem* item
);
void (* item_updated) (
ClapperFeature* feature,
ClapperMediaItem* item
);
void (* queue_item_added) (
ClapperFeature* feature,
ClapperMediaItem* item,
guint index
);
void (* queue_item_removed) (
ClapperFeature* feature,
ClapperMediaItem* item,
guint index
);
void (* queue_item_repositioned) (
ClapperFeature* feature,
guint before,
guint after
);
void (* queue_cleared) (
ClapperFeature* feature
);
void (* queue_progression_changed) (
ClapperFeature* feature,
ClapperQueueProgressionMode mode
);
}Class members
parent_class: GstObjectClassThe object class structure.
prepare: gboolean (* prepare) ( ClapperFeature* feature )Prepare feature for operation (optional).
unprepare: gboolean (* unprepare) ( ClapperFeature* feature )Revert the changes done in
prepare(optional).property_changed: void (* property_changed) ( ClapperFeature* feature, GParamSpec* pspec )A property of
featurechanged its value.state_changed: void (* state_changed) ( ClapperFeature* feature, ClapperPlayerState state )Player state was changed.
position_changed: void (* position_changed) ( ClapperFeature* feature, gdouble position )Player position was changed.
speed_changed: void (* speed_changed) ( ClapperFeature* feature, gdouble speed )Player speed was changed.
volume_changed: void (* volume_changed) ( ClapperFeature* feature, gdouble volume )Player volume was changed.
mute_changed: void (* mute_changed) ( ClapperFeature* feature, gboolean mute )Player mute state was changed.
played_item_changed: void (* played_item_changed) ( ClapperFeature* feature, ClapperMediaItem* item )Currently playing media item got changed.
item_updated: void (* item_updated) ( ClapperFeature* feature, ClapperMediaItem* item )An item in queue got updated.
queue_item_added: void (* queue_item_added) ( ClapperFeature* feature, ClapperMediaItem* item, guint index )An item was added to the queue.
queue_item_removed: void (* queue_item_removed) ( ClapperFeature* feature, ClapperMediaItem* item, guint index )An item was removed from queue.
queue_item_repositioned: void (* queue_item_repositioned) ( ClapperFeature* feature, guint before, guint after )- No description available.
queue_cleared: void (* queue_cleared) ( ClapperFeature* feature )All items were removed from queue.
queue_progression_changed: void (* queue_progression_changed) ( ClapperFeature* feature, ClapperQueueProgressionMode mode )Progression mode of the queue was changed.
Virtual methods
Clapper.FeatureClass.item_updated
An item in queue got updated. This might be (or not) currently played item. Implementations can get parent player object if they want to check that from its queue.
Clapper.FeatureClass.played_item_changed
New media item started playing. All following events (such as position changes)
will be related to this item from now on.
Clapper.FeatureClass.queue_cleared
All items were removed from queue. Note that in such event
queue_item_removed will NOT be called for each item for performance reasons.
You probably want to implement this function if you also implemented item removal.