/**
* ges_layer_resync_priorities:
* @layer: a #GESLayer
*
* Resyncs the priorities of the objects controlled by @layer.
* This method
*/
static gboolean
ges_layer_resync_priorities (GESLayer * layer)
{
GList *tmp;
GESTimelineElement *element;
GST_DEBUG ("Resync priorities of %p", layer);
/* TODO : Inhibit composition updates while doing this.
* Ideally we want to do it from an even higher level, but here will
* do in the meantime. */
for (tmp = layer->priv->clips_start; tmp; tmp = tmp->next) {
element = GES_TIMELINE_ELEMENT (tmp->data);
_set_priority0 (element, _PRIORITY (element));
}
return TRUE;
}
/****************************************************
* Our listening of children *
****************************************************/
static void
_update_our_values (GESGroup * group)
{
GList *tmp;
GESContainer *container = GES_CONTAINER (group);
guint32 min_layer_prio = G_MAXINT32, max_layer_prio = 0;
for (tmp = GES_CONTAINER_CHILDREN (group); tmp; tmp = tmp->next) {
GESContainer *child = tmp->data;
if (GES_IS_CLIP (child)) {
GESLayer *layer = ges_clip_get_layer (GES_CLIP (child));
gint32 prio = ges_layer_get_priority (layer);
min_layer_prio = MIN (prio, min_layer_prio);
max_layer_prio = MAX (prio, max_layer_prio);
} else if (GES_IS_GROUP (child)) {
gint32 prio = _PRIORITY (child), height = GES_CONTAINER_HEIGHT (child);
min_layer_prio = MIN (prio, min_layer_prio);
max_layer_prio = MAX ((prio + height), max_layer_prio);
}
}
if (min_layer_prio != _PRIORITY (group)) {
group->priv->setting_value = TRUE;
_set_priority0 (GES_TIMELINE_ELEMENT (group), min_layer_prio);
group->priv->setting_value = FALSE;
for (tmp = GES_CONTAINER_CHILDREN (group); tmp; tmp = tmp->next) {
GESTimelineElement *child = tmp->data;
guint32 child_prio = GES_IS_CLIP (child) ?
ges_clip_get_layer_priority (GES_CLIP (child)) : _PRIORITY (child);
_ges_container_set_priority_offset (container,
child, min_layer_prio - child_prio);
}
}
group->priv->max_layer_prio = max_layer_prio;
_ges_container_set_height (GES_CONTAINER (group),
max_layer_prio - min_layer_prio + 1);
}
/**
* ges_layer_add_clip:
* @layer: a #GESLayer
* @clip: (transfer full): the #GESClip to add.
*
* Adds the given clip to the layer. Sets the clip's parent, and thus
* takes ownership of the clip.
*
* An clip can only be added to one layer.
*
* Calling this method will construct and properly set all the media related
* elements on @clip. If you need to know when those objects (actually #GESTrackElement)
* are constructed, you should connect to the container::child-added signal which
* is emited right after those elements are ready to be used.
*
* Returns: TRUE if the clip was properly added to the layer, or FALSE
* if the @layer refuses to add the clip.
*/
gboolean
ges_layer_add_clip (GESLayer * layer, GESClip * clip)
{
GESAsset *asset;
GESLayerPrivate *priv;
GESLayer *current_layer;
g_return_val_if_fail (GES_IS_LAYER (layer), FALSE);
g_return_val_if_fail (GES_IS_CLIP (clip), FALSE);
GST_DEBUG_OBJECT (layer, "adding clip:%p", clip);
priv = layer->priv;
current_layer = ges_clip_get_layer (clip);
if (G_UNLIKELY (current_layer)) {
GST_WARNING ("Clip %p already belongs to another layer", clip);
gst_object_unref (current_layer);
return FALSE;
}
asset = ges_extractable_get_asset (GES_EXTRACTABLE (clip));
if (asset == NULL) {
gchar *id;
NewAssetUData *mudata = g_slice_new (NewAssetUData);
mudata->clip = clip;
mudata->layer = layer;
GST_DEBUG_OBJECT (layer, "%" GST_PTR_FORMAT " as no reference to any "
"assets creating a asset... trying sync", clip);
id = ges_extractable_get_id (GES_EXTRACTABLE (clip));
asset = ges_asset_request (G_OBJECT_TYPE (clip), id, NULL);
if (asset == NULL) {
GESProject *project = layer->timeline ?
GES_PROJECT (ges_extractable_get_asset (GES_EXTRACTABLE
(layer->timeline))) : NULL;
ges_asset_request_async (G_OBJECT_TYPE (clip),
id, NULL, (GAsyncReadyCallback) new_asset_cb, mudata);
if (project)
ges_project_add_loading_asset (project, G_OBJECT_TYPE (clip), id);
g_free (id);
GST_LOG_OBJECT (layer, "Object added async");
return TRUE;
}
g_free (id);
ges_extractable_set_asset (GES_EXTRACTABLE (clip), asset);
g_slice_free (NewAssetUData, mudata);
}
gst_object_ref_sink (clip);
/* Take a reference to the clip and store it stored by start/priority */
priv->clips_start = g_list_insert_sorted (priv->clips_start, clip,
(GCompareFunc) element_start_compare);
/* Inform the clip it's now in this layer */
ges_clip_set_layer (clip, layer);
GST_DEBUG ("current clip priority : %d, Height: %d", _PRIORITY (clip),
LAYER_HEIGHT);
/* Set the priority. */
if (_PRIORITY (clip) > LAYER_HEIGHT) {
GST_WARNING_OBJECT (layer,
"%p is out of the layer space, setting its priority to "
"%d, setting it to the maximum priority of the layer: %d", clip,
_PRIORITY (clip), LAYER_HEIGHT - 1);
_set_priority0 (GES_TIMELINE_ELEMENT (clip), LAYER_HEIGHT - 1);
}
/* If the clip has an acceptable priority, we just let it with its current
* priority */
ges_layer_resync_priorities (layer);
ges_timeline_element_set_timeline (GES_TIMELINE_ELEMENT (clip),
layer->timeline);
/* emit 'clip-added' */
g_signal_emit (layer, ges_layer_signals[OBJECT_ADDED], 0, clip);
return TRUE;
}
