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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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ges: Rework the way we ensure core elements are not wrongly moved between clips
Instead of focusing on the instances of the clips and their children, we relax the check to allow moving track element clip between clips that share a common asset. This makes it as correct conceptually but more flexible, and the code becomes simpler.
This commit is contained in:
Thibault Saunier
Henry Wilkes
parent
ef1c0f0faa
commit
e41a6b6fac
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@ -77,8 +77,9 @@ GES.TimelineElement.set_child_property = __timeline_element_set_child_property
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GES.TrackElement.set_child_property = GES.TimelineElement.set_child_property
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GES.Container.edit = GES.TimelineElement.edit
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__prev_asset_repr = GES.Asset.__repr__
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def __asset__repr__(self):
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return "%s(%s)" % (super(type(self)).__repr__(), self.props.id)
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return "%s(%s)" % (__prev_asset_repr(self), self.props.id)
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GES.Asset.__repr__ = __asset__repr__
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@ -653,9 +653,9 @@ _add_child (GESContainer * container, GESTimelineElement * element)
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GESClipClass *klass = GES_CLIP_GET_CLASS (GES_CLIP (container));
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guint max_prio, min_prio;
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GESTrack *track;
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GList *creators;
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GESTimeline *timeline = GES_TIMELINE_ELEMENT_TIMELINE (container);
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GESClipPrivate *priv = GES_CLIP (container)->priv;
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GESAsset *asset, *creator_asset;
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g_return_val_if_fail (GES_IS_TRACK_ELEMENT (element), FALSE);
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@ -667,12 +667,14 @@ _add_child (GESContainer * container, GESTimelineElement * element)
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return FALSE;
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}
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creators = ges_track_element_get_creators (GES_TRACK_ELEMENT (element));
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if (creators && !g_list_find (creators, container)) {
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asset = ges_extractable_get_asset (GES_EXTRACTABLE (container));
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creator_asset =
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ges_track_element_get_creator_asset (GES_TRACK_ELEMENT (element));
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if (creator_asset && asset != creator_asset) {
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GST_WARNING_OBJECT (container,
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"Cannot add the track element %" GES_FORMAT " because it was "
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"created for a different clip %" GES_FORMAT " as its core child",
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GES_ARGS (element), GES_ARGS (creators->data));
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"Cannot add the track element %" GES_FORMAT " as a child "
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"because it is a core element created by another clip with a "
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"different asset to the current clip's asset", GES_ARGS (element));
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return FALSE;
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}
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@ -692,7 +694,7 @@ _add_child (GESContainer * container, GESTimelineElement * element)
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/* NOTE: notifies are currently frozen by ges_container_add */
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_get_priority_range (container, &min_prio, &max_prio);
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if (creators) {
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if (creator_asset) {
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/* NOTE: Core track elements that are base effects are added like any
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* other core elements. In particular, they are *not* added to the
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* list of added effects, so we do not increase nb_effects. */
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@ -802,8 +804,6 @@ _remove_child (GESContainer * container, GESTimelineElement * element)
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/* height may have changed */
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_compute_height (container);
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}
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/* Creator is not reset so that the child can be readded to @container
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* but not to any other clip by the end user */
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return TRUE;
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}
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@ -852,6 +852,9 @@ add_clip_to_list (gpointer key, gpointer clip, GList ** list)
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* will not break the track rules:
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* + no more than one core child per track
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* + every non-core child must be in the same track as a core child
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* NOTE: Since this does not change the creator asset of the child, this
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* should only be called for transferring children between clips with the
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* same asset.
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*/
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static void
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_transfer_child (GESClip * from_clip, GESClip * to_clip,
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@ -868,11 +871,6 @@ _transfer_child (GESClip * from_clip, GESClip * to_clip,
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ges_container_remove (GES_CONTAINER (from_clip),
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GES_TIMELINE_ELEMENT (child));
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if (_IS_CORE_CHILD (child)) {
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ges_track_element_clear_creators (child);
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ges_track_element_add_creator (child, to_clip);
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}
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to_clip->priv->allow_any_track = TRUE;
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ges_container_add (GES_CONTAINER (to_clip), GES_TIMELINE_ELEMENT (child));
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to_clip->priv->allow_any_track = FALSE;
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@ -881,24 +879,6 @@ _transfer_child (GESClip * from_clip, GESClip * to_clip,
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gst_object_unref (child);
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}
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/* make each clip's child share creators to allow their children
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* to be moved between the clips */
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static void
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_share_creators (GList * clips)
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{
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GList *clip1, *clip2, *child;
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for (clip1 = clips; clip1; clip1 = clip1->next) {
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for (child = GES_CONTAINER_CHILDREN (clip1->data); child;
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child = child->next) {
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if (!_IS_CORE_CHILD (child->data))
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continue;
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for (clip2 = clips; clip2; clip2 = clip2->next)
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ges_track_element_add_creator (child->data, clip2->data);
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}
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}
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}
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static GList *
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_ungroup (GESContainer * container, gboolean recursive)
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{
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@ -959,7 +939,6 @@ _ungroup (GESContainer * container, gboolean recursive)
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g_hash_table_foreach (_tracktype_clip, (GHFunc) add_clip_to_list, &ret);
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g_hash_table_unref (_tracktype_clip);
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_share_creators (ret);
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return ret;
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}
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@ -1001,7 +980,7 @@ _group (GList * containers)
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GESTimeline *timeline;
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GESTrackType supported_formats;
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GESLayer *layer;
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GList *tmp, *tmp2, *tmpclip, *list;
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GList *tmp, *tmp2, *tmpclip;
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GstClockTime start, inpoint, duration;
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GESTimelineElement *element;
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@ -1056,9 +1035,6 @@ _group (GList * containers)
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}
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}
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/* keep containers alive for _share_creators */
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list = g_list_copy_deep (containers, (GCopyFunc) gst_object_ref, NULL);
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/* And now pass all TrackElements to the first clip,
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* and remove others from the layer (updating the supported formats) */
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ret = containers->data;
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@ -1089,9 +1065,6 @@ _group (GList * containers)
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ges_clip_set_supported_formats (GES_CLIP (ret), supported_formats);
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_share_creators (list);
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g_list_free_full (list, gst_object_unref);
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return ret;
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}
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@ -1137,8 +1110,8 @@ _copy_track_element_to (GESTrackElement * orig, GESClip * to_clip,
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* handled */
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ges_track_element_copy_bindings (orig, copy, position);
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if (_IS_CORE_CHILD (orig))
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ges_track_element_add_creator (copy, to_clip);
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ges_track_element_set_creator_asset (copy,
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ges_track_element_get_creator_asset (orig));
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return copy;
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}
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@ -1451,6 +1424,7 @@ ges_clip_create_track_elements (GESClip * clip, GESTrackType type)
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GList *tmp, *ret;
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GESClipClass *klass;
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gboolean already_created = FALSE;
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GESAsset *asset;
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g_return_val_if_fail (GES_IS_CLIP (clip), NULL);
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@ -1481,8 +1455,9 @@ ges_clip_create_track_elements (GESClip * clip, GESTrackType type)
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return NULL;
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ret = klass->create_track_elements (clip, type);
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asset = ges_extractable_get_asset (GES_EXTRACTABLE (clip));
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for (tmp = ret; tmp; tmp = tmp->next)
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ges_track_element_add_creator (tmp->data, clip);
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ges_track_element_set_creator_asset (tmp->data, asset);
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return ret;
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}
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@ -845,8 +845,6 @@ ges_container_add (GESContainer * container, GESTimelineElement * child)
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child);
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priv->adding_children = g_list_remove (priv->adding_children, child);
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ret = TRUE;
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done:
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/* thaw all notifies */
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/* Ignore notifies for the start and duration since the child should
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@ -857,6 +855,7 @@ done:
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g_object_thaw_notify (G_OBJECT (tmp->data));
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g_object_thaw_notify (G_OBJECT (child));
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g_list_free_full (current_children, gst_object_unref);
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ret = ! !g_list_find (container->children, child);
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gst_object_unref (child);
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container->children_control_mode = GES_CHILDREN_UPDATE;
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return ret;
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@ -84,7 +84,7 @@ GstDebugCategory * _ges_debug (void);
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#define GES_ARGS GES_TIMELINE_ELEMENT_ARGS
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#define GES_TRACK_ELEMENT_IS_CORE(child) \
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(ges_track_element_get_creators (GES_TRACK_ELEMENT (child)) != NULL)
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(ges_track_element_get_creator_asset (GES_TRACK_ELEMENT (child)) != NULL)
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#define SUPRESS_UNUSED_WARNING(a) (void)a
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@ -439,11 +439,11 @@ G_GNUC_INTERNAL void ges_track_element_copy_bindings (GESTrackElement *element,
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GESTrackElement *new_element,
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guint64 position);
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G_GNUC_INTERNAL void ges_track_element_add_creator (GESTrackElement * self,
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GESClip * creator);
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G_GNUC_INTERNAL void ges_track_element_clear_creators (GESTrackElement * self);
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/* NOTE: Returned element is only valid for **pointer comparison** */
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G_GNUC_INTERNAL GList * ges_track_element_get_creators (GESTrackElement * self);
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G_GNUC_INTERNAL void
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ges_track_element_set_creator_asset (GESTrackElement * self,
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GESAsset *creator_asset);
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G_GNUC_INTERNAL GESAsset *
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ges_track_element_get_creator_asset (GESTrackElement * self);
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G_GNUC_INTERNAL GstElement* ges_source_create_topbin(const gchar* bin_name, GstElement* sub_element, GPtrArray* elements);
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G_GNUC_INTERNAL void ges_track_set_caps(GESTrack* track,
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@ -67,7 +67,7 @@ struct _GESTrackElementPrivate
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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 *creators; /* the GESClips that are considered our creators */
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GESAsset *creator_asset;
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};
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enum
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@ -257,16 +257,6 @@ ges_track_element_dispose (GObject * object)
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G_OBJECT_CLASS (ges_track_element_parent_class)->dispose (object);
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}
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static void
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ges_track_element_finalize (GObject * object)
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{
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GESTrackElement *self = GES_TRACK_ELEMENT (object);
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ges_track_element_clear_creators (self);
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G_OBJECT_CLASS (ges_track_element_parent_class)->finalize (object);
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}
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static void
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ges_track_element_set_asset (GESExtractable * extractable, GESAsset * asset)
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{
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@ -342,10 +332,8 @@ ges_track_element_class_init (GESTrackElementClass * klass)
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object_class->get_property = ges_track_element_get_property;
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object_class->set_property = ges_track_element_set_property;
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object_class->dispose = ges_track_element_dispose;
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object_class->finalize = ges_track_element_finalize;
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object_class->constructed = ges_track_element_constructed;
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/**
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* GESTrackElement:active:
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*
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@ -1484,37 +1472,17 @@ ges_track_element_copy_properties (GESTimelineElement * element,
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g_free (specs);
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}
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static void
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creator_disposed (GESTrackElement * self, GObject * creator)
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{
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self->priv->creators = g_list_remove (self->priv->creators, creator);
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}
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void
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ges_track_element_add_creator (GESTrackElement * self, GESClip * creator)
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ges_track_element_set_creator_asset (GESTrackElement * self,
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GESAsset * creator_asset)
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{
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if (!g_list_find (self->priv->creators, creator)) {
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self->priv->creators = g_list_prepend (self->priv->creators, creator);
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g_object_weak_ref (G_OBJECT (creator),
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(GWeakNotify) creator_disposed, self);
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}
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self->priv->creator_asset = creator_asset;
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}
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void
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ges_track_element_clear_creators (GESTrackElement * self)
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GESAsset *
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ges_track_element_get_creator_asset (GESTrackElement * self)
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{
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GList *tmp;
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for (tmp = self->priv->creators; tmp; tmp = tmp->next)
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g_object_weak_unref (tmp->data, (GWeakNotify) creator_disposed, self);
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g_list_free (self->priv->creators);
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self->priv->creators = NULL;
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}
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GList *
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ges_track_element_get_creators (GESTrackElement * self)
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{
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return self->priv->creators;
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return self->priv->creator_asset;
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}
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static void
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@ -165,6 +165,8 @@ extractable_set_asset (GESExtractable * self, GESAsset * asset)
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GESVideoStandardTransitionType value;
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GESTransitionClip *trans = GES_TRANSITION_CLIP (self);
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const gchar *vtype = ges_asset_get_id (asset);
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GESAsset *prev_asset = ges_extractable_get_asset (self);
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GList *tmp;
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if (!(ges_clip_get_supported_formats (GES_CLIP (self)) &
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GES_TRACK_TYPE_VIDEO)) {
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@ -188,6 +190,14 @@ extractable_set_asset (GESExtractable * self, GESAsset * asset)
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ges_transition_clip_update_vtype_internal (GES_CLIP (self), value, FALSE);
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}
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if (!prev_asset)
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return TRUE;
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for (tmp = GES_CONTAINER_CHILDREN (self); tmp; tmp = tmp->next) {
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if (ges_track_element_get_creator_asset (tmp->data) == prev_asset)
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ges_track_element_set_creator_asset (tmp->data, asset);
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}
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return TRUE;
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}
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@ -120,7 +120,7 @@ typedef struct
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struct _GESUriSourceAssetPrivate
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{
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GstDiscovererStreamInfo *sinfo;
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GESUriClipAsset *parent_asset;
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GESUriClipAsset *creator_asset;
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const gchar *uri;
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};
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@ -379,7 +379,7 @@ _create_uri_source_asset (GESUriClipAsset * asset,
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src_priv = GES_URI_SOURCE_ASSET (src_asset)->priv;
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src_priv->uri = ges_asset_get_id (GES_ASSET (asset));
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src_priv->sinfo = gst_object_ref (sinfo);
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src_priv->parent_asset = asset;
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src_priv->creator_asset = asset;
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ges_track_element_asset_set_track_type (GES_TRACK_ELEMENT_ASSET
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(src_asset), type);
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@ -855,7 +855,7 @@ ges_uri_source_asset_init (GESUriSourceAsset * self)
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priv = self->priv = ges_uri_source_asset_get_instance_private (self);
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priv->sinfo = NULL;
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priv->parent_asset = NULL;
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priv->creator_asset = NULL;
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priv->uri = NULL;
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}
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@ -896,7 +896,7 @@ ges_uri_source_asset_get_filesource_asset (GESUriSourceAsset * asset)
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{
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g_return_val_if_fail (GES_IS_URI_SOURCE_ASSET (asset), NULL);
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return asset->priv->parent_asset;
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return asset->priv->creator_asset;
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}
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/**
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@ -253,6 +253,7 @@ class TestTrackElements(common.GESSimpleTimelineTest):
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def test_moving_core_track_elements(self):
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clip = self.append_clip()
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clip1 = self.append_clip()
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title_clip = self.append_clip(asset_type=GES.TitleClip)
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track_element = clip.find_track_element(None, GES.VideoSource)
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self.assertTrue(clip.remove(track_element))
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@ -260,9 +261,22 @@ class TestTrackElements(common.GESSimpleTimelineTest):
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track_element1 = clip1.find_track_element(None, GES.VideoSource)
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self.assertTrue(clip1.remove(track_element1))
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self.assertFalse(clip1.add(track_element))
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self.assertFalse(clip.add(track_element1))
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self.assertTrue(clip1.add(track_element))
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self.assertIsNotNone(track_element.get_track())
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# We can add another TestSource to the clip as it has the same parent
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# asset
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self.assertTrue(clip1.add(track_element1))
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# We already have a core TrackElement for the video track, not adding
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# a second one.
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self.assertIsNone(track_element1.get_track())
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clip1.remove(track_element)
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clip1.remove(track_element1)
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title = title_clip.find_track_element(None, GES.VideoSource)
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self.assertTrue(title_clip.remove(title))
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# But we can't add an element that has been created by a TitleClip
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self.assertFalse(clip.add(title))
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self.assertFalse(title_clip.add(track_element))
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self.assertTrue(clip.add(track_element))
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self.assertTrue(clip1.add(track_element1))
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