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timeline: handle async start

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This commit is contained in:
Mathieu Duponchelle 2014-07-25 14:47:07 +02:00 committed by Thibault Saunier
parent d2b8e9d3d9
commit 565591e9ee
1 changed files with 69 additions and 0 deletions
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69
ges/ges-timeline.c
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@ -189,6 +189,8 @@ struct _GESTimelinePrivate
guint group_id;
GHashTable *all_elements;
guint expected_async_done;
};
/* private structure to contain our track-related information */
@ -366,6 +368,68 @@ ges_timeline_finalize (GObject * object)
G_OBJECT_CLASS (ges_timeline_parent_class)->finalize (object);
}
static void
ges_timeline_handle_message (GstBin * bin, GstMessage * message)
{
GstMessageType type;
GESTimeline *timeline = GES_TIMELINE (bin);
GstMessage *forwarded_message;
GstObject *element;
type = GST_MESSAGE_TYPE (message);
if (type == GST_MESSAGE_ELEMENT) {
const GstStructure *mstructure = gst_message_get_structure (message);
if (!gst_structure_get (mstructure, "message", GST_TYPE_MESSAGE, &forwarded_message, NULL))
goto forward;
} else {
goto forward;
}
element = GST_MESSAGE_SRC (forwarded_message);
if (!GES_IS_TRACK (GST_ELEMENT_PARENT (GST_ELEMENT (element))))
goto forward;
if (!gst_mini_object_get_qdata ((GstMiniObject *) forwarded_message,
g_quark_from_static_string ("gnl-async-seek")))
goto forward;
type = GST_MESSAGE_TYPE (forwarded_message);
switch (type) {
case GST_MESSAGE_ASYNC_START:
GST_OBJECT_LOCK (timeline);
if (timeline->priv->expected_async_done == 0) {
GstMessage *amessage = gst_message_new_async_start (GST_OBJECT_CAST (bin));
timeline->priv->expected_async_done = g_list_length (timeline->tracks);
GST_OBJECT_UNLOCK (timeline);
gst_element_post_message (GST_ELEMENT_CAST (bin), amessage);
} else {
GST_OBJECT_UNLOCK (timeline);
}
return;
case GST_MESSAGE_ASYNC_DONE:
GST_OBJECT_LOCK (timeline);
timeline->priv->expected_async_done -= 1;
if (timeline->priv->expected_async_done == 0) {
GstMessage *amessage = gst_message_new_async_done (GST_OBJECT_CAST (bin),
GST_CLOCK_TIME_NONE);
GST_OBJECT_UNLOCK (timeline);
gst_element_post_message (GST_ELEMENT_CAST (bin), amessage);
} else {
GST_OBJECT_UNLOCK (timeline);
}
return;
default:
goto forward;
break;
}
forward:
gst_element_post_message (GST_ELEMENT_CAST (bin), message);
}
/* we collect the first result */
static gboolean
_gst_array_accumulator (GSignalInvocationHint * ihint,
@ -384,6 +448,7 @@ static void
ges_timeline_class_init (GESTimelineClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstBinClass *bin_class = GST_BIN_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESTimelinePrivate));
@ -397,6 +462,8 @@ ges_timeline_class_init (GESTimelineClass * klass)
object_class->dispose = ges_timeline_dispose;
object_class->finalize = ges_timeline_finalize;
bin_class->handle_message = GST_DEBUG_FUNCPTR (ges_timeline_handle_message);
/**
* GESTimeline:duration:
*
@ -545,6 +612,7 @@ ges_timeline_init (GESTimeline * self)
self->priv->duration = 0;
self->priv->auto_transition = FALSE;
priv->snapping_distance = 0;
priv->expected_async_done = 0;
/* Move context initialization */
init_movecontext (&self->priv->movecontext, TRUE);
@ -2780,6 +2848,7 @@ ges_timeline_add_track (GESTimeline * timeline, GESTrack * track)
/* FIXME Check if we should rollback if we can't sync state */
gst_element_sync_state_with_parent (GST_ELEMENT (track));
g_object_set (track, "message-forward", TRUE, NULL);
return TRUE;
}