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ges: Call the right ->set_child_property vmethod
We used to always call the `->set_child_property` virtual method of the object that `ges_timeline_element_set_child_property` was called from, but that means that, in the case of referencing GESContainer children properties from its children, the children wouldn't know what child property have been set, and the children override wouldn't be takent into account, in turns, it means that the behaviour could be different in the setter depending on parent the method was called, which is totally unexpected. We now make sure that the vmethod from the element that introduced the child property is called whatever parent method is called, making the behaviour more uniform. Fix the python override to make sure that new behaviour is respected.
This commit is contained in:
Thibault Saunier
parent
c454969524
commit
c802a40a96
4 changed files with 113 additions and 98 deletions
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@ -27,6 +27,7 @@
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import sys
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from ..overrides import override
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from ..importer import modules
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from gi.repository import GObject
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if sys.version_info >= (3, 0):
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@ -60,12 +61,15 @@ class TimelineElement(GES.TimelineElement):
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)
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def set_child_property(self, prop_name, prop_value):
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res, child, unused_pspec = GES.TimelineElement.lookup_child(self, prop_name)
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res, _, pspec = GES.TimelineElement.lookup_child(self, prop_name)
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if not res:
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return res
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child.set_property(prop_name, prop_value)
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return res
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v = GObject.Value()
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v.init(pspec.value_type)
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v.set_value(prop_value)
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return GES.TimelineElement.set_child_property(self, prop_name, v)
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TimelineElement = override(TimelineElement)
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@ -220,8 +220,8 @@ _ges_container_add_child_properties (GESContainer * container,
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child_props[i]->name);
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if (ges_timeline_element_lookup_child (child, prop_name, &prop_child, NULL)) {
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ges_timeline_element_add_child_property (GES_TIMELINE_ELEMENT (container),
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child_props[i], prop_child);
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ges_timeline_element_add_child_property_full (GES_TIMELINE_ELEMENT
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(container), child, child_props[i], prop_child);
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gst_object_unref (prop_child);
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}
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@ -437,6 +437,10 @@ G_GNUC_INTERNAL gdouble ges_timeline_element_get_media_duration_factor(GESTimeli
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G_GNUC_INTERNAL GESTimelineElement * ges_timeline_element_get_copied_from (GESTimelineElement *self);
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G_GNUC_INTERNAL GESTimelineElementFlags ges_timeline_element_flags (GESTimelineElement *self);
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G_GNUC_INTERNAL void ges_timeline_element_set_flags (GESTimelineElement *self, GESTimelineElementFlags flags);
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G_GNUC_INTERNAL gboolean ges_timeline_element_add_child_property_full (GESTimelineElement *self,
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GESTimelineElement *owner,
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GParamSpec *pspec,
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GObject *child);
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#define ELEMENT_FLAGS(obj) (ges_timeline_element_flags (GES_TIMELINE_ELEMENT(obj)))
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#define ELEMENT_SET_FLAG(obj,flag) (ges_timeline_element_set_flags(GES_TIMELINE_ELEMENT(obj), (ELEMENT_FLAGS(obj) | (flag))))
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@ -83,6 +83,7 @@ static GParamSpec *properties[PROP_LAST] = { NULL, };
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typedef struct
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{
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GObject *child;
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GESTimelineElement *owner;
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gulong handler_id;
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} ChildPropHandler;
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@ -593,6 +594,99 @@ ges_timeline_element_set_flags (GESTimelineElement * self,
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}
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static gboolean
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emit_deep_notify_in_idle (EmitDeepNotifyInIdleData * data)
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{
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g_signal_emit (data->self, ges_timeline_element_signals[DEEP_NOTIFY], 0,
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data->child, data->arg);
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gst_object_unref (data->child);
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g_param_spec_unref (data->arg);
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gst_object_unref (data->self);
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g_slice_free (EmitDeepNotifyInIdleData, data);
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return FALSE;
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}
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static void
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child_prop_changed_cb (GObject * child, GParamSpec * arg
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G_GNUC_UNUSED, GESTimelineElement * self)
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{
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EmitDeepNotifyInIdleData *data;
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/* Emit "deep-notify" right away if in main thread */
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if (g_main_context_acquire (g_main_context_default ())) {
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g_main_context_release (g_main_context_default ());
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g_signal_emit (self, ges_timeline_element_signals[DEEP_NOTIFY], 0,
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child, arg);
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return;
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}
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data = g_slice_new (EmitDeepNotifyInIdleData);
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data->child = gst_object_ref (child);
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data->arg = g_param_spec_ref (arg);
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data->self = gst_object_ref (self);
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ges_idle_add ((GSourceFunc) emit_deep_notify_in_idle, data, NULL);
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}
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static gboolean
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set_child_property_by_pspec (GESTimelineElement * self,
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GParamSpec * pspec, const GValue * value)
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{
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GESTimelineElementClass *klass;
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GESTimelineElement *setter = self;
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ChildPropHandler *handler =
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g_hash_table_lookup (self->priv->children_props, pspec);
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if (!handler) {
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GST_ERROR_OBJECT (self, "The %s property doesn't exist", pspec->name);
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return FALSE;
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}
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if (handler->owner) {
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klass = GES_TIMELINE_ELEMENT_GET_CLASS (handler->owner);
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setter = handler->owner;
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} else {
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klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
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}
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g_assert (klass->set_child_property);
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klass->set_child_property (setter, handler->child, pspec, (GValue *) value);
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return TRUE;
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}
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gboolean
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ges_timeline_element_add_child_property_full (GESTimelineElement * self,
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GESTimelineElement * owner, GParamSpec * pspec, GObject * child)
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{
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gchar *signame;
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ChildPropHandler *handler;
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if (g_hash_table_contains (self->priv->children_props, pspec)) {
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GST_INFO_OBJECT (self, "Child property already exists: %s", pspec->name);
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return FALSE;
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}
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GST_DEBUG_OBJECT (self, "Adding child property: %" GST_PTR_FORMAT "::%s",
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child, pspec->name);
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signame = g_strconcat ("notify::", pspec->name, NULL);
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handler = (ChildPropHandler *) g_slice_new0 (ChildPropHandler);
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handler->child = gst_object_ref (child);
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handler->owner = owner;
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handler->handler_id =
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g_signal_connect (child, signame, G_CALLBACK (child_prop_changed_cb),
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self);
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g_hash_table_insert (self->priv->children_props, g_param_spec_ref (pspec),
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handler);
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g_free (signame);
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return TRUE;
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}
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/*********************************************
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* API implementation *
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*********************************************/
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@ -1390,70 +1484,12 @@ had_timeline:
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}
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}
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static gboolean
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emit_deep_notify_in_idle (EmitDeepNotifyInIdleData * data)
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{
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g_signal_emit (data->self, ges_timeline_element_signals[DEEP_NOTIFY], 0,
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data->child, data->arg);
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gst_object_unref (data->child);
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g_param_spec_unref (data->arg);
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gst_object_unref (data->self);
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g_slice_free (EmitDeepNotifyInIdleData, data);
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return FALSE;
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}
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static void
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child_prop_changed_cb (GObject * child, GParamSpec * arg
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G_GNUC_UNUSED, GESTimelineElement * self)
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{
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EmitDeepNotifyInIdleData *data;
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/* Emit "deep-notify" right away if in main thread */
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if (g_main_context_acquire (g_main_context_default ())) {
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g_main_context_release (g_main_context_default ());
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g_signal_emit (self, ges_timeline_element_signals[DEEP_NOTIFY], 0,
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child, arg);
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return;
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}
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data = g_slice_new (EmitDeepNotifyInIdleData);
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data->child = gst_object_ref (child);
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data->arg = g_param_spec_ref (arg);
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data->self = gst_object_ref (self);
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ges_idle_add ((GSourceFunc) emit_deep_notify_in_idle, data, NULL);
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}
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gboolean
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ges_timeline_element_add_child_property (GESTimelineElement * self,
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GParamSpec * pspec, GObject * child)
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{
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gchar *signame;
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ChildPropHandler *handler;
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if (g_hash_table_contains (self->priv->children_props, pspec)) {
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GST_INFO_OBJECT (self, "Child property already exists: %s", pspec->name);
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return FALSE;
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}
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GST_DEBUG_OBJECT (self, "Adding child property: %" GST_PTR_FORMAT "::%s",
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child, pspec->name);
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signame = g_strconcat ("notify::", pspec->name, NULL);
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handler = (ChildPropHandler *) g_slice_new0 (ChildPropHandler);
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handler->child = gst_object_ref (child);
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handler->handler_id =
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g_signal_connect (child, signame, G_CALLBACK (child_prop_changed_cb),
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self);
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g_hash_table_insert (self->priv->children_props, g_param_spec_ref (pspec),
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handler);
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g_free (signame);
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return TRUE;
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return ges_timeline_element_add_child_property_full (self, NULL, pspec,
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child);
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}
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/**
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@ -1499,27 +1535,9 @@ void
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ges_timeline_element_set_child_property_by_pspec (GESTimelineElement * self,
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GParamSpec * pspec, const GValue * value)
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{
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ChildPropHandler *handler;
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GESTimelineElementClass *klass;
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g_return_if_fail (GES_IS_TRACK_ELEMENT (self));
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handler = g_hash_table_lookup (self->priv->children_props, pspec);
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if (!handler)
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goto not_found;
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klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
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g_assert (klass->set_child_property);
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klass->set_child_property (self, handler->child, pspec, (GValue *) value);
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return;
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not_found:
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{
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GST_ERROR ("The %s property doesn't exist", pspec->name);
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return;
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}
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set_child_property_by_pspec (self, pspec, value);
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}
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/**
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@ -1541,7 +1559,6 @@ ges_timeline_element_set_child_property (GESTimelineElement * self,
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const gchar * property_name, const GValue * value)
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{
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GParamSpec *pspec;
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GESTimelineElementClass *klass;
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GObject *child;
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g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (self), FALSE);
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@ -1549,14 +1566,7 @@ ges_timeline_element_set_child_property (GESTimelineElement * self,
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if (!ges_timeline_element_lookup_child (self, property_name, &child, &pspec))
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goto not_found;
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klass = GES_TIMELINE_ELEMENT_GET_CLASS (self);
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g_assert (klass->set_child_property);
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klass->set_child_property (self, child, pspec, (GValue *) value);
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gst_object_unref (child);
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g_param_spec_unref (pspec);
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return TRUE;
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return set_child_property_by_pspec (self, pspec, value);
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not_found:
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{
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@ -1667,7 +1677,6 @@ ges_timeline_element_set_child_property_valist (GESTimelineElement * self,
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{
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const gchar *name;
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GParamSpec *pspec;
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GObject *child;
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gchar *error = NULL;
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GValue value = { 0, };
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@ -1681,7 +1690,7 @@ ges_timeline_element_set_child_property_valist (GESTimelineElement * self,
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/* iterate over pairs */
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while (name) {
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if (!ges_timeline_element_lookup_child (self, name, &child, &pspec))
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if (!ges_timeline_element_lookup_child (self, name, NULL, &pspec))
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goto not_found;
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G_VALUE_COLLECT_INIT (&value, pspec->value_type, var_args,
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@ -1690,9 +1699,8 @@ ges_timeline_element_set_child_property_valist (GESTimelineElement * self,
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if (error)
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goto cant_copy;
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g_object_set_property (child, pspec->name, &value);
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set_child_property_by_pspec (self, pspec, &value);
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gst_object_unref (child);
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g_param_spec_unref (pspec);
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g_value_unset (&value);
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@ -1710,7 +1718,6 @@ cant_copy:
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GST_WARNING_OBJECT (self, "error copying value %s in %p: %s", pspec->name,
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self, error);
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gst_object_unref (child);
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g_param_spec_unref (pspec);
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g_value_unset (&value);
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return;
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