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track-element: Rely on nleobject to be created at construct time
Avoiding all the pending_xx dance and making the code simpler. This is now possible thanks to the various recent refactoring. Thanks to that the user is able to set_child_property on objects that are not in GESTrack yet, as expected. Reviewed-by: Thibault Saunier <thibault.saunier@collabora.com> Differential Revision: https://phabricator.freedesktop.org/D739
This commit is contained in:
Thibault Saunier
parent
8c672f8366
commit
a81f4b2d8f
1 changed files with 73 additions and 182 deletions
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@ -42,36 +42,18 @@ struct _GESTrackElementPrivate
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{
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GESTrackType track_type;
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/* These fields are only used before the nleobject is available */
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guint64 pending_start;
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guint64 pending_inpoint;
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guint64 pending_duration;
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guint32 pending_priority;
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gboolean pending_active;
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GstElement *nleobject; /* The NleObject */
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GstElement *element; /* The element contained in the nleobject (can be NULL) */
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GESTrack *track;
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gboolean valid;
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gboolean locked; /* If TRUE, then moves in sync with its controlling
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* GESClip */
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GHashTable *bindings_hashtable; /* We need this if we want to be able to serialize
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and deserialize keyframes */
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GList *pending_bindings;
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};
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typedef struct
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{
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GESTrackElement *element;
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GstControlSource *source;
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gchar *propname;
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gchar *binding_type;
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} PendingBinding;
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enum
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{
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PROP_0,
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@ -105,7 +87,6 @@ GESTrackType _get_track_types (GESTimelineElement * object);
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static GParamSpec **default_list_children_properties (GESTrackElement * object,
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guint * n_properties);
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static gboolean ensure_nle_object (GESTrackElement * object);
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static void
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_update_control_bindings (GESTimelineElement * element, GstClockTime inpoint,
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@ -209,11 +190,39 @@ ges_track_element_dispose (GObject * object)
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}
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static void
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ges_track_element_constructed (GObject * object)
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ges_track_element_constructed (GObject * gobject)
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{
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ensure_nle_object (GES_TRACK_ELEMENT (object));
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GESTrackElementClass *class;
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GstElement *nleobject;
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GESTrackElement *object = GES_TRACK_ELEMENT (gobject);
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G_OBJECT_CLASS (ges_track_element_parent_class)->constructed (object);
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GST_DEBUG_OBJECT (object, "Creating NleObject");
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class = GES_TRACK_ELEMENT_GET_CLASS (object);
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g_assert (class->create_gnl_object);
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nleobject = class->create_gnl_object (object);
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if (G_UNLIKELY (nleobject == NULL)) {
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GST_ERROR_OBJECT (object, "Could not create NleObject");
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return;
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}
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GST_DEBUG_OBJECT (object, "Got a valid NleObject, now filling it in");
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object->priv->nleobject = gst_object_ref (nleobject);
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g_object_set_qdata (G_OBJECT (nleobject), NLE_OBJECT_TRACK_ELEMENT_QUARK,
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object);
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/* Set some properties on the NleObject */
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g_object_set (object->priv->nleobject,
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"start", GES_TIMELINE_ELEMENT_START (object),
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"inpoint", GES_TIMELINE_ELEMENT_INPOINT (object),
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"duration", GES_TIMELINE_ELEMENT_DURATION (object),
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"priority", GES_TIMELINE_ELEMENT_PRIORITY (object),
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"active", object->active, NULL);
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G_OBJECT_CLASS (ges_track_element_parent_class)->constructed (gobject);
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}
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static void
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@ -298,11 +307,12 @@ ges_track_element_init (GESTrackElement * self)
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GES_TYPE_TRACK_ELEMENT, GESTrackElementPrivate);
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/* Sane default values */
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priv->pending_start = 0;
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priv->pending_inpoint = 0;
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priv->pending_duration = GST_SECOND;
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priv->pending_priority = MIN_NLE_PRIO;
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priv->pending_active = TRUE;
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GES_TIMELINE_ELEMENT_START (self) = 0;
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GES_TIMELINE_ELEMENT_INPOINT (self) = 0;
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GES_TIMELINE_ELEMENT_DURATION (self) = GST_SECOND;
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GES_TIMELINE_ELEMENT_PRIORITY (self) = 0;
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self->active = TRUE;
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priv->bindings_hashtable = g_hash_table_new_full (g_str_hash, g_str_equal,
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g_free, NULL);
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}
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@ -438,13 +448,12 @@ _set_start (GESTimelineElement * element, GstClockTime start)
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{
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GESTrackElement *object = GES_TRACK_ELEMENT (element);
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if (object->priv->nleobject != NULL) {
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if (G_UNLIKELY (start == _START (object)))
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return FALSE;
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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g_object_set (object->priv->nleobject, "start", start, NULL);
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} else
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object->priv->pending_start = start;
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if (G_UNLIKELY (start == _START (object)))
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return FALSE;
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g_object_set (object->priv->nleobject, "start", start, NULL);
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return TRUE;
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}
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@ -454,15 +463,13 @@ _set_inpoint (GESTimelineElement * element, GstClockTime inpoint)
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{
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GESTrackElement *object = GES_TRACK_ELEMENT (element);
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if (object->priv->nleobject != NULL) {
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if (G_UNLIKELY (inpoint == _INPOINT (object)))
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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return FALSE;
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if (G_UNLIKELY (inpoint == _INPOINT (object)))
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g_object_set (object->priv->nleobject, "inpoint", inpoint, NULL);
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} else
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object->priv->pending_inpoint = inpoint;
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return FALSE;
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g_object_set (object->priv->nleobject, "inpoint", inpoint, NULL);
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_update_control_bindings (element, inpoint, GST_CLOCK_TIME_NONE);
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return TRUE;
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@ -474,17 +481,16 @@ _set_duration (GESTimelineElement * element, GstClockTime duration)
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GESTrackElement *object = GES_TRACK_ELEMENT (element);
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GESTrackElementPrivate *priv = object->priv;
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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if (GST_CLOCK_TIME_IS_VALID (_MAXDURATION (element)) &&
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duration > _INPOINT (object) + _MAXDURATION (element))
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duration = _MAXDURATION (element) - _INPOINT (object);
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if (priv->nleobject != NULL) {
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if (G_UNLIKELY (duration == _DURATION (object)))
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return FALSE;
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if (G_UNLIKELY (duration == _DURATION (object)))
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return FALSE;
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g_object_set (priv->nleobject, "duration", duration, NULL);
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} else
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priv->pending_duration = duration;
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g_object_set (priv->nleobject, "duration", duration, NULL);
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_update_control_bindings (element, ges_timeline_element_get_inpoint (element),
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duration);
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@ -497,6 +503,8 @@ _set_priority (GESTimelineElement * element, guint32 priority)
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{
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GESTrackElement *object = GES_TRACK_ELEMENT (element);
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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if (priority < MIN_NLE_PRIO) {
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GST_INFO_OBJECT (element, "Priority (%d) < MIN_NLE_PRIO, setting it to %d",
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priority, MIN_NLE_PRIO);
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@ -505,13 +513,10 @@ _set_priority (GESTimelineElement * element, guint32 priority)
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GST_DEBUG ("object:%p, priority:%" G_GUINT32_FORMAT, object, priority);
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if (object->priv->nleobject != NULL) {
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if (G_UNLIKELY (priority == _PRIORITY (object)))
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return FALSE;
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if (G_UNLIKELY (priority == _PRIORITY (object)))
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return FALSE;
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g_object_set (object->priv->nleobject, "priority", priority, NULL);
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} else
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object->priv->pending_priority = priority;
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g_object_set (object->priv->nleobject, "priority", priority, NULL);
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return TRUE;
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}
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@ -536,22 +541,20 @@ gboolean
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ges_track_element_set_active (GESTrackElement * object, gboolean active)
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{
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g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), FALSE);
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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GST_DEBUG_OBJECT (object, "object:%p, active:%d", object, active);
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if (object->priv->nleobject != NULL) {
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if (G_UNLIKELY (active == object->active))
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return FALSE;
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if (G_UNLIKELY (active == object->active))
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return FALSE;
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g_object_set (object->priv->nleobject, "active", active, NULL);
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g_object_set (object->priv->nleobject, "active", active, NULL);
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if (active != object->active) {
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object->active = active;
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if (GES_TRACK_ELEMENT_GET_CLASS (object)->active_changed)
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GES_TRACK_ELEMENT_GET_CLASS (object)->active_changed (object, active);
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}
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} else
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object->priv->pending_active = active;
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if (active != object->active) {
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object->active = active;
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if (GES_TRACK_ELEMENT_GET_CLASS (object)->active_changed)
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GES_TRACK_ELEMENT_GET_CLASS (object)->active_changed (object, active);
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}
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return TRUE;
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}
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@ -655,76 +658,6 @@ add_failure:
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}
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}
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static gboolean
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ensure_nle_object (GESTrackElement * object)
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{
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GESTrackElementClass *class;
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GstElement *nleobject;
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gboolean res = TRUE;
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if (object->priv->nleobject && object->priv->valid)
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return FALSE;
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/* 1. Create the NleObject */
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GST_DEBUG ("Creating NleObject");
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class = GES_TRACK_ELEMENT_GET_CLASS (object);
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if (G_UNLIKELY (class->create_gnl_object == NULL)) {
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GST_ERROR ("No 'create_gnl_object' implementation !");
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goto done;
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}
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GST_DEBUG ("Calling virtual method");
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/* 2. Fill in the NleObject */
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if (object->priv->nleobject == NULL) {
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/* call the create_gnl_object virtual method */
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nleobject = class->create_gnl_object (object);
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if (G_UNLIKELY (nleobject == NULL)) {
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GST_ERROR
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("'create_gnl_object' implementation returned TRUE but no NleObject is available");
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goto done;
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}
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GST_DEBUG_OBJECT (object, "Got a valid NleObject, now filling it in");
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object->priv->nleobject = gst_object_ref (nleobject);
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g_object_set_qdata (G_OBJECT (nleobject), NLE_OBJECT_TRACK_ELEMENT_QUARK,
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object);
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/* Set some properties on the NleObject */
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g_object_set (object->priv->nleobject,
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"duration", object->priv->pending_duration,
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"start", object->priv->pending_start,
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"inpoint", object->priv->pending_inpoint,
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"priority", object->priv->pending_priority,
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"active", object->priv->pending_active, NULL);
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/* Pendings values are not pending anymore */
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GES_TIMELINE_ELEMENT_START (object) = object->priv->pending_start;
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GES_TIMELINE_ELEMENT_INPOINT (object) = object->priv->pending_inpoint;
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GES_TIMELINE_ELEMENT_DURATION (object) = object->priv->pending_duration;
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GES_TIMELINE_ELEMENT_PRIORITY (object) = object->priv->pending_priority;
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object->active = object->priv->pending_active;
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if (object->priv->track != NULL)
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g_object_set (object->priv->nleobject,
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"caps", ges_track_get_caps (object->priv->track), NULL);
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}
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done:
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object->priv->valid = res;
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GST_DEBUG ("Returning res:%d", res);
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return res;
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}
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/**
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* ges_track_element_add_children_props:
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* @self: The #GESTrackElement to set chidlren props on
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@ -857,46 +790,20 @@ ges_track_element_add_children_props (GESTrackElement * self,
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}
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/* INTERNAL USAGE */
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static void
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_free_pending_binding (PendingBinding * pend)
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{
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g_slice_free (PendingBinding, pend);
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}
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gboolean
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ges_track_element_set_track (GESTrackElement * object, GESTrack * track)
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{
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gboolean ret = TRUE;
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GST_DEBUG ("object:%p, track:%p", object, track);
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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GST_DEBUG_OBJECT (object, "new track: %" GST_PTR_FORMAT, track);
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object->priv->track = track;
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if (object->priv->track) {
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/* If we already have a nleobject, we just set its caps properly */
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if (object->priv->nleobject) {
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g_object_set (object->priv->nleobject,
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"caps", ges_track_get_caps (object->priv->track), NULL);
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} else {
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ret = ensure_nle_object (object);
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/* if we had pending control bindings, add them and free them */
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if (ret && object->priv->pending_bindings) {
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GList *tmp;
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PendingBinding *pbinding;
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GST_INFO_OBJECT (object, "Asynchronously adding bindings");
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for (tmp = object->priv->pending_bindings; tmp; tmp = tmp->next) {
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pbinding = tmp->data;
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ges_track_element_set_control_source (pbinding->element,
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pbinding->source, pbinding->propname, pbinding->binding_type);
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g_free (pbinding->propname);
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g_free (pbinding->binding_type);
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}
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g_list_free_full (object->priv->pending_bindings,
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(GDestroyNotify) _free_pending_binding);
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object->priv->pending_bindings = NULL;
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}
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}
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g_object_set (object->priv->nleobject,
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"caps", ges_track_get_caps (object->priv->track), NULL);
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}
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g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_TRACK]);
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@ -1010,11 +917,9 @@ gboolean
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ges_track_element_is_active (GESTrackElement * object)
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{
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g_return_val_if_fail (GES_IS_TRACK_ELEMENT (object), FALSE);
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g_return_val_if_fail (object->priv->nleobject, FALSE);
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if (G_UNLIKELY (object->priv->nleobject == NULL))
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return object->priv->pending_active;
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else
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return object->active;
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return object->active;
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}
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/**
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@ -1278,7 +1183,6 @@ ges_track_element_copy_properties (GESTimelineElement * element,
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GValue val = { 0 };
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GESTrackElement *copy = GES_TRACK_ELEMENT (elementcopy);
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ensure_nle_object (copy);
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specs =
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ges_track_element_list_children_properties (GES_TRACK_ELEMENT (element),
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&n_specs);
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@ -1556,19 +1460,6 @@ ges_track_element_set_control_source (GESTrackElement * object,
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return FALSE;
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}
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if (!priv->track) {
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PendingBinding *pbinding;
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GST_INFO ("Adding this source to the future bindings");
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pbinding = g_slice_new0 (PendingBinding);
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pbinding->element = object;
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pbinding->source = source;
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pbinding->propname = g_strdup (property_name);
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pbinding->binding_type = g_strdup (binding_type);
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priv->pending_bindings = g_list_append (priv->pending_bindings, pbinding);
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return TRUE;
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}
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if (!ges_track_element_lookup_child (object, property_name, &element, &pspec)) {
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GST_WARNING ("You need to provide a valid and controllable property name");
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return FALSE;
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