QVariant Timeline::
data(const QModelIndex &index, int role) const
{
GESTimelineObject * object;
object = ges_simple_timeline_layer_nth(layer, index.row());
if (!object)
{
return QVariant::fromValue(QString("Invalid index"));
}
switch (role)
{
case thumb_uri_role:
return thumbForObject(object);
case media_uri_role:
return mediaUri(object);
case duration_role:
return QVariant::fromValue((double) GES_TIMELINE_OBJECT_DURATION(object));
case inpoint_role:
return QVariant::fromValue((double) GES_TIMELINE_OBJECT_INPOINT(object));
case outpoint_role:
return QVariant::fromValue((double) GES_TIMELINE_OBJECT_INPOINT(object) +
GES_TIMELINE_OBJECT_DURATION(object));
case duration_only_role:
gboolean is_image;
g_object_get (G_OBJECT(object),
"is-image", (gboolean *) &is_image, NULL);
return QVariant::fromValue((bool) is_image);
default:
return QVariant::fromValue(QString("Invalid role " + role));
};
}
void Timeline::
privDurationChanged(GESTimelineObject *obj)
{
qDebug() << GES_TIMELINE_OBJECT_DURATION (obj);
gint index = ges_simple_timeline_layer_index(layer, obj);
if (index == -1)
{
qDebug() << "houston, we have a problem";
return;
}
emit dataChanged(createIndex(index, 0), createIndex(index + 1, 1));
}
static void
gstl_recalculate (GESSimpleTimelineLayer * self)
{
GList *tmp;
gint64 pos = 0;
gint priority = 0;
gint transition_priority = 0;
gint height;
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 (priv->objects && GES_IS_TIMELINE_TRANSITION (priv->objects->data)) {
valid = FALSE;
}
for (tmp = priv->objects; tmp; tmp = tmp->next) {
GESTimelineObject *obj;
guint64 dur;
GList *l_next;
obj = (GESTimelineObject *) tmp->data;
dur = GES_TIMELINE_OBJECT_DURATION (obj);
height = GES_TIMELINE_OBJECT_HEIGHT (obj);
if (GES_IS_TIMELINE_SOURCE (obj)) {
GST_LOG ("%p obj: height: %d: priority %d", obj, height, priority);
if (G_UNLIKELY (GES_TIMELINE_OBJECT_START (obj) != pos)) {
ges_timeline_object_set_start (obj, pos);
}
if (G_UNLIKELY (GES_TIMELINE_OBJECT_PRIORITY (obj) != priority)) {
ges_timeline_object_set_priority (obj, priority);
}
transition_priority = MAX (0, priority - 1);
priority += height;
pos += dur;
g_assert (priority != -1);
} else if (GES_IS_TIMELINE_TRANSITION (obj)) {
pos -= dur;
if (pos < 0)
pos = 0;
GST_LOG ("%p obj: height: %d: trans_priority %d Position: %"
G_GINT64_FORMAT ", duration %" G_GINT64_FORMAT, obj, height,
transition_priority, pos, dur);
g_assert (transition_priority != -1);
if (G_UNLIKELY (GES_TIMELINE_OBJECT_START (obj) != pos))
ges_timeline_object_set_start (obj, pos);
if (G_UNLIKELY (GES_TIMELINE_OBJECT_PRIORITY (obj) !=
transition_priority)) {
ges_timeline_object_set_priority (obj, transition_priority);
}
/* sanity checks */
l_next = g_list_next (tmp);
if (GES_IS_TIMELINE_TRANSITION (prev_object)) {
GST_ERROR ("two transitions in sequence!");
valid = FALSE;
}
if (prev_object && (GES_TIMELINE_OBJECT_DURATION (prev_object) < dur)) {
GST_ERROR ("transition duration exceeds that of previous neighbor!");
valid = FALSE;
}
if (l_next && (GES_TIMELINE_OBJECT_DURATION (l_next->data) < dur)) {
GST_ERROR ("transition duration exceeds that of next neighbor!");
valid = FALSE;
}
if (prev_transition) {
guint64 start, end;
end = (GES_TIMELINE_OBJECT_DURATION (prev_transition) +
GES_TIMELINE_OBJECT_START (prev_transition));
start = pos;
if (end > start) {
GST_ERROR ("%" G_GUINT64_FORMAT ", %" G_GUINT64_FORMAT ": "
"overlapping transitions!", start, end);
valid = FALSE;
}
}
prev_transition = obj;
}
prev_object = obj;
}
if (prev_object && GES_IS_TIMELINE_TRANSITION (prev_object)) {
valid = FALSE;
}
GST_DEBUG ("Finished recalculating: final start pos is: %" GST_TIME_FORMAT,
GST_TIME_ARGS (pos));
GES_TIMELINE_LAYER (self)->max_gnl_priority = priority;
if (valid != self->priv->valid) {
self->priv->valid = valid;
g_object_notify (G_OBJECT (self), "valid");
}
}
