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videosource: Make sure to update z-order when layer priority changes

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Conflicts:
	ges/ges-video-source.c
This commit is contained in:
Thibault Saunier 2013-09-01 12:19:32 -04:00
parent 9fa99df5a7
commit 9ed5803323
1 changed files with 54 additions and 11 deletions
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65
ges/ges-video-source.c
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@ -36,23 +36,42 @@ struct _GESVideoSourcePrivate
{
GstFramePositionner *positionner;
GstElement *capsfilter;
GESLayer *layer;
};
/* TrackElement VMethods */
static void
update_z_order_cb (GESClip * clip, GParamSpec * arg G_GNUC_UNUSED,
layer_priority_changed_cb (GESLayer * layer, GParamSpec * arg G_GNUC_UNUSED,
GESVideoSource * self)
{
GESLayer *layer = ges_clip_get_layer (clip);
if (layer == NULL)
return;
/* 10000 is the max value of zorder on videomixerpad, hardcoded */
g_object_set (self->priv->positionner, "zorder",
10000 - ges_layer_get_priority (layer), NULL);
}
gst_object_unref (layer);
static void
layer_changed_cb (GESClip * clip, GParamSpec * arg G_GNUC_UNUSED,
GESVideoSource * self)
{
GESVideoSourcePrivate *priv = self->priv;
if (priv->layer) {
g_signal_handlers_disconnect_by_func (priv->layer,
layer_priority_changed_cb, self);
}
priv->layer = ges_clip_get_layer (clip);
if (priv->layer == NULL)
return;
/* We do not need any ref ourself as our parent owns one and we are connected
* to it */
g_object_unref (priv->layer);
/* 10000 is the max value of zorder on videomixerpad, hardcoded */
g_signal_connect (self->priv->layer, "notify::priority",
G_CALLBACK (layer_priority_changed_cb), self);
g_object_set (self->priv->positionner, "zorder",
10000 - ges_layer_get_priority (self->priv->layer), NULL);
}
static GstElement *
@ -93,8 +112,8 @@ ges_video_source_create_element (GESTrackElement * trksrc)
if (parent) {
self->priv->positionner = GST_FRAME_POSITIONNER (positionner);
g_signal_connect (parent, "notify::layer",
(GCallback) update_z_order_cb, trksrc);
update_z_order_cb (GES_CLIP (parent), NULL, self);
(GCallback) layer_changed_cb, trksrc);
layer_changed_cb (GES_CLIP (parent), NULL, self);
gst_object_unref (parent);
} else {
GST_ERROR ("No parent timeline element, SHOULD NOT HAPPEN");
@ -105,14 +124,38 @@ ges_video_source_create_element (GESTrackElement * trksrc)
return topbin;
}
static gboolean
_set_parent (GESTimelineElement * self, GESTimelineElement * parent)
{
GESVideoSourcePrivate *priv = GES_VIDEO_SOURCE (self)->priv;
if (self->parent) {
if (priv->layer) {
g_signal_handlers_disconnect_by_func (priv->layer,
layer_priority_changed_cb, self);
priv->layer = NULL;
}
g_signal_handlers_disconnect_by_func (self->parent, layer_changed_cb, self);
}
if (parent && priv->positionner)
layer_changed_cb (GES_CLIP (parent), NULL, GES_VIDEO_SOURCE (self));
return TRUE;
}
static void
ges_video_source_class_init (GESVideoSourceClass * klass)
{
GESTrackElementClass *track_class = GES_TRACK_ELEMENT_CLASS (klass);
GESTimelineElementClass *element_class = GES_TIMELINE_ELEMENT_CLASS (klass);
GESVideoSourceClass *video_source_class = GES_VIDEO_SOURCE_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESVideoSourcePrivate));
element_class->set_parent = _set_parent;
track_class->gnlobject_factorytype = "gnlsource";
track_class->create_element = ges_video_source_create_element;
video_source_class->create_source = NULL;