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layer: Handle operation priorities

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All operations should have higher priorites and sources should be
on top of those. We now first set the operations priorities in
a first pass and then stack sources on top of those.

Differential Revision: https://phabricator.freedesktop.org/D1279
This commit is contained in:
Thibault Saunier 2016-08-11 10:36:44 -04:00 committed by Thibault Saunier
parent eb48faf342
commit f79c73789f
1 changed files with 36 additions and 17 deletions
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53
ges/ges-layer.c
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@ -218,36 +218,28 @@ ges_layer_init (GESLayer * self)
_register_metas (self);
}
/**
* ges_layer_resync_priorities:
* @layer: a #GESLayer
*
* Resyncs the priorities of the clips controlled by @layer.
* This method
*/
gboolean
ges_layer_resync_priorities (GESLayer * layer)
static gint
ges_layer_resync_priorities_by_type (GESLayer * layer,
gint starting_priority, GType type)
{
GstClockTime next_reset = 0;
gint priority = 1;
gint priority = starting_priority, max_priority = priority;
GList *tmp;
GESTimelineElement *element;
GST_INFO_OBJECT (layer, "Resync priorities (prio: %d)",
layer->priv->priority);
for (tmp = layer->priv->clips_start; tmp; tmp = tmp->next) {
element = GES_TIMELINE_ELEMENT (tmp->data);
if (GES_IS_TRANSITION_CLIP (element)) {
/* Blindly set transitions priorities to 0 */
_set_priority0 (element, 0);
continue;
}
} else if (!g_type_is_a (G_OBJECT_TYPE (element), type))
continue;
if (element->start > next_reset) {
priority = 1;
priority = starting_priority;
next_reset = 0;
}
@ -256,8 +248,34 @@ ges_layer_resync_priorities (GESLayer * layer)
_set_priority0 (element, priority);
priority = priority + GES_CONTAINER_HEIGHT (element);
if (priority > max_priority)
max_priority = priority;
}
return max_priority;
}
/**
* ges_layer_resync_priorities:
* @layer: a #GESLayer
*
* Resyncs the priorities of the clips controlled by @layer.
*/
gboolean
ges_layer_resync_priorities (GESLayer * layer)
{
gint min_source_prios;
GST_INFO_OBJECT (layer, "Resync priorities (prio: %d)",
layer->priv->priority);
min_source_prios = ges_layer_resync_priorities_by_type (layer, 1,
GES_TYPE_OPERATION_CLIP);
ges_layer_resync_priorities_by_type (layer, min_source_prios,
GES_TYPE_SOURCE_CLIP);
return TRUE;
}
@ -398,6 +416,7 @@ ges_layer_set_priority (GESLayer * layer, guint priority)
layer->priv->priority = priority;
layer->min_nle_priority = (priority * LAYER_HEIGHT) + MIN_NLE_PRIO;
layer->max_nle_priority = ((priority + 1) * LAYER_HEIGHT) + MIN_NLE_PRIO;
ges_layer_resync_priorities (layer);
}
@ -530,7 +549,7 @@ ges_layer_add_clip (GESLayer * layer, GESClip * clip)
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: %s", GES_TIMELINE_ELEMENT_NAME (clip));
GST_DEBUG_OBJECT (layer, "adding clip:%p", clip);
priv = layer->priv;
current_layer = ges_clip_get_layer (clip);