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GESSimpleTimelineLayer: add private structure

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Thibault Saunier 2010-11-17 19:53:32 +01:00 committed by Edward Hervey
parent 4c91a36f9a
commit 7fc3be7d44
4 changed files with 78 additions and 33 deletions
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2
docs/libs/ges-sections.txt
View file

@ -410,8 +410,10 @@ GESSimpleTimelineLayerClass
ges_simple_timeline_layer_new
ges_simple_timeline_layer_add_object
ges_simple_timeline_layer_move_object
ges_simple_timeline_layer_is_valid
<SUBSECTION Standard>
ges_simple_timeline_layer_get_type
GESSimpleTimelineLayerPrivate
GES_IS_SIMPLE_TIMELINE_LAYER
GES_IS_SIMPLE_TIMELINE_LAYER_CLASS
GES_SIMPLE_TIMELINE_LAYER

74
ges/ges-simple-timeline-layer.c
View file

@ -25,7 +25,7 @@
* #GESSimpleTimelineLayer allows using #GESTimelineObject(s) with a list-like
* API. Clients can add any type of GESTimelineObject to a
* GESSimpleTimelineLayer, and the layer will automatically compute the
* appropriate start times.
* appropriate start times.
*
* Users should be aware that GESTimelineTransition objects are considered to
* have a negative duration for the purposes of positioning GESTimelineSource
@ -57,6 +57,15 @@ static GList *get_objects (GESTimelineLayer * layer);
G_DEFINE_TYPE (GESSimpleTimelineLayer, ges_simple_timeline_layer,
GES_TYPE_TIMELINE_LAYER);
struct _GESSimpleTimelineLayerPrivate
{
/* Sorted list of objects */
GList *objects;
gboolean adding_object;
gboolean valid;
};
enum
{
OBJECT_MOVED,
@ -81,7 +90,7 @@ ges_simple_timeline_layer_get_property (GObject * object,
switch (property_id) {
case PROP_VALID:
g_value_set_boolean (value, self->valid);
g_value_set_boolean (value, self->priv->valid);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
@ -116,6 +125,8 @@ ges_simple_timeline_layer_class_init (GESSimpleTimelineLayerClass * klass)
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTimelineLayerClass *layer_class = GES_TIMELINE_LAYER_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESSimpleTimelineLayerPrivate));
object_class->get_property = ges_simple_timeline_layer_get_property;
object_class->set_property = ges_simple_timeline_layer_set_property;
object_class->dispose = ges_simple_timeline_layer_dispose;
@ -159,7 +170,10 @@ ges_simple_timeline_layer_class_init (GESSimpleTimelineLayerClass * klass)
static void
ges_simple_timeline_layer_init (GESSimpleTimelineLayer * self)
{
self->objects = NULL;
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_SIMPLE_TIMELINE_LAYER, GESSimpleTimelineLayerPrivate);
self->priv->objects = NULL;
}
static void
@ -173,16 +187,17 @@ gstl_recalculate (GESSimpleTimelineLayer * self)
GESTimelineObject *prev_object = NULL;
GESTimelineObject *prev_transition = NULL;
gboolean valid = TRUE;
GESSimpleTimelineLayerPrivate *priv = self->priv;
priority = GES_TIMELINE_LAYER (self)->min_gnl_priority + 2;
GST_DEBUG ("recalculating values");
if (self->objects && GES_IS_TIMELINE_TRANSITION (self->objects->data)) {
if (priv->objects && GES_IS_TIMELINE_TRANSITION (priv->objects->data)) {
valid = FALSE;
}
for (tmp = self->objects; tmp; tmp = tmp->next) {
for (tmp = priv->objects; tmp; tmp = tmp->next) {
GESTimelineObject *obj;
guint64 dur;
GList *l_next;
@ -272,8 +287,8 @@ gstl_recalculate (GESSimpleTimelineLayer * self)
GES_TIMELINE_LAYER (self)->max_gnl_priority = priority;
if (valid != self->valid) {
self->valid = valid;
if (valid != self->priv->valid) {
self->priv->valid = valid;
g_object_notify (G_OBJECT (self), "valid");
}
}
@ -287,7 +302,7 @@ gstl_recalculate (GESSimpleTimelineLayer * self)
* Adds the object at the given position in the layer. The position is where
* the object will be inserted. To put the object before all objects, use
* position 0. To put after all objects, use position -1.
*
*
* When adding transitions, it is important that the adjacent objects
* (objects at position, and position + 1) be (1) A derivative of
* GESTimelineSource or other non-transition, and (2) have a duration at least
@ -303,10 +318,11 @@ ges_simple_timeline_layer_add_object (GESSimpleTimelineLayer * layer,
{
gboolean res;
GList *nth;
GESSimpleTimelineLayerPrivate *priv = layer->priv;
GST_DEBUG ("layer:%p, object:%p, position:%d", layer, object, position);
nth = g_list_nth (layer->objects, position);
nth = g_list_nth (priv->objects, position);
if (GES_IS_TIMELINE_TRANSITION (object)) {
GList *lprev = g_list_previous (nth);
@ -323,21 +339,21 @@ ges_simple_timeline_layer_add_object (GESSimpleTimelineLayer * layer,
}
layer->adding_object = TRUE;
priv->adding_object = TRUE;
res = ges_timeline_layer_add_object ((GESTimelineLayer *) layer, object);
/* Add to layer */
if (G_UNLIKELY (!res)) {
layer->adding_object = FALSE;
priv->adding_object = FALSE;
return FALSE;
}
layer->adding_object = FALSE;
priv->adding_object = FALSE;
GST_DEBUG ("Adding object %p to the list", object);
layer->objects = g_list_insert (layer->objects, object, position);
priv->objects = g_list_insert (priv->objects, object, position);
g_signal_connect (G_OBJECT (object), "notify::height", G_CALLBACK
(timeline_object_height_changed_cb), layer);
@ -366,6 +382,7 @@ ges_simple_timeline_layer_move_object (GESSimpleTimelineLayer * layer,
GESTimelineObject * object, gint newposition)
{
gint idx;
GESSimpleTimelineLayerPrivate *priv = layer->priv;
GST_DEBUG ("layer:%p, object:%p, newposition:%d", layer, object, newposition);
@ -375,7 +392,7 @@ ges_simple_timeline_layer_move_object (GESSimpleTimelineLayer * layer,
}
/* Find it's current position */
idx = g_list_index (layer->objects, object);
idx = g_list_index (priv->objects, object);
if (G_UNLIKELY (idx == -1)) {
GST_WARNING ("TimelineObject not controlled by this layer");
return FALSE;
@ -388,10 +405,10 @@ ges_simple_timeline_layer_move_object (GESSimpleTimelineLayer * layer,
return TRUE;
/* pop it off the list */
layer->objects = g_list_remove (layer->objects, object);
priv->objects = g_list_remove (priv->objects, object);
/* re-add it at the proper position */
layer->objects = g_list_insert (layer->objects, object, newposition);
priv->objects = g_list_insert (priv->objects, object, newposition);
/* recalculate positions */
gstl_recalculate (layer);
@ -415,6 +432,23 @@ ges_simple_timeline_layer_new (void)
return g_object_new (GES_TYPE_SIMPLE_TIMELINE_LAYER, NULL);
}
/**
* ges_simple_timeline_layer_is_valid:
*
* FALSE when the arrangement of objects in the layer would cause errors or
* unexpected output during playback. Do not set the containing pipeline
* state to PLAYING when this property is FALSE.
*
* Returns: #True if current arrangement of the layer is valid, #False
* otherwise
*/
gboolean
ges_simple_timeline_layer_is_valid (GESSimpleTimelineLayer * layer)
{
return layer->priv->valid;
}
static void
ges_simple_timeline_layer_object_removed (GESTimelineLayer * layer,
GESTimelineObject * object)
@ -422,7 +456,7 @@ ges_simple_timeline_layer_object_removed (GESTimelineLayer * layer,
GESSimpleTimelineLayer *sl = (GESSimpleTimelineLayer *) layer;
/* remove object from our list */
sl->objects = g_list_remove (sl->objects, object);
sl->priv->objects = g_list_remove (sl->priv->objects, object);
gstl_recalculate (sl);
}
@ -432,9 +466,9 @@ ges_simple_timeline_layer_object_added (GESTimelineLayer * layer,
{
GESSimpleTimelineLayer *sl = (GESSimpleTimelineLayer *) layer;
if (sl->adding_object == FALSE) {
if (sl->priv->adding_object == FALSE) {
/* remove object from our list */
sl->objects = g_list_append (sl->objects, object);
sl->priv->objects = g_list_append (sl->priv->objects, object);
gstl_recalculate (sl);
}
g_signal_connect_swapped (object, "notify::duration",
@ -456,7 +490,7 @@ get_objects (GESTimelineLayer * l)
GList *tmp;
GESSimpleTimelineLayer *layer = (GESSimpleTimelineLayer *) l;
ret = g_list_copy (layer->objects);
ret = g_list_copy (layer->priv->objects);
for (tmp = ret; tmp; tmp = tmp->next) {
g_object_ref (tmp->data);

11
ges/ges-simple-timeline-layer.h
View file

@ -44,6 +44,8 @@ G_BEGIN_DECLS
#define GES_SIMPLE_TIMELINE_LAYER_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_SIMPLE_TIMELINE_LAYER, GESSimpleTimelineLayerClass))
typedef struct _GESSimpleTimelineLayerPrivate GESSimpleTimelineLayerPrivate;
/**
* GESSimpleTimelineLayer:
*
@ -53,11 +55,7 @@ struct _GESSimpleTimelineLayer {
GESTimelineLayer parent;
/*< private >*/
/* Sorted list of objects */
GList *objects;
gboolean adding_object;
gboolean valid;
GESSimpleTimelineLayerPrivate *priv;
/* Padding for API extension */
gpointer _ges_reserved[GES_PADDING];
@ -93,6 +91,9 @@ gboolean
ges_simple_timeline_layer_move_object (GESSimpleTimelineLayer *layer,
GESTimelineObject *object, gint newposition);
gboolean
ges_simple_timeline_layer_is_valid (GESSimpleTimelineLayer *layer);
G_END_DECLS
#endif /* _GES_SIMPLE_TIMELINE_LAYER */

24
tests/examples/ges-ui.c
View file

@ -1004,27 +1004,35 @@ app_delete_objects (App * app, GList * objects)
static void
app_move_selected_up (App * app)
{
GESSimpleTimelineLayer *layer;
GList *objects, *tmp;
gint pos;
layer = GES_SIMPLE_TIMELINE_LAYER (app->layer);
pos = g_list_index (layer->objects, app->selected_objects->data);
objects = ges_timeline_layer_get_objects (app->layer);
pos = g_list_index (objects, app->selected_objects->data);
ges_simple_timeline_layer_move_object (GES_SIMPLE_TIMELINE_LAYER (app->layer),
GES_TIMELINE_OBJECT (app->selected_objects->data), pos - 1);
GES_TIMELINE_OBJECT (app->selected_objects->data), pos - 1);
for (tmp = objects; tmp; tmp = tmp->next) {
g_object_unref (tmp->data);
}
}
static void
app_move_selected_down (App * app)
{
GESSimpleTimelineLayer *layer;
GList *objects, *tmp;
gint pos;
layer = GES_SIMPLE_TIMELINE_LAYER (app->layer);
pos = g_list_index (layer->objects, app->selected_objects->data);
objects = ges_timeline_layer_get_objects (app->layer);
pos = g_list_index (objects, app->selected_objects->data);
ges_simple_timeline_layer_move_object (GES_SIMPLE_TIMELINE_LAYER (app->layer),
GES_TIMELINE_OBJECT (app->selected_objects->data), pos + 2);
GES_TIMELINE_OBJECT (app->selected_objects->data), pos - 1);
for (tmp = objects; tmp; tmp = tmp->next) {
g_object_unref (tmp->data);
}
}
static void