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timeline: Add support for group-id in the stream-start event

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This commit is contained in:
Thibault Saunier 2013-08-02 14:16:26 +02:00
parent 786a8f5b8a
commit 0671b69d34
1 changed files with 34 additions and 0 deletions
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34
ges/ges-timeline.c
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@ -185,6 +185,8 @@ struct _GESTimelinePrivate
* ignore the child-added signal */
GESClip *ignore_track_element_added;
GList *groups;
guint group_id;
};
/* private structure to contain our track-related information */
@ -195,6 +197,8 @@ typedef struct
GESTrack *track;
GstPad *pad; /* Pad from the track */
GstPad *ghostpad;
gulong probe_id;
} TrackPrivate;
enum
@ -550,6 +554,8 @@ ges_timeline_init (GESTimeline * self)
g_hash_table_new_full (g_str_hash, g_str_equal, NULL, gst_object_unref);
priv->needs_transitions_update = TRUE;
priv->group_id = -1;
g_signal_connect_after (self, "select-tracks-for-object",
G_CALLBACK (select_tracks_for_object_default), NULL);
}
@ -2179,6 +2185,29 @@ track_element_removed_cb (GESTrack * track,
stop_tracking_track_element (timeline, track_element);
}
static GstPadProbeReturn
_pad_probe_cb (GstPad * mixer_pad, GstPadProbeInfo * info,
GESTimeline * timeline)
{
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
if (GST_EVENT_TYPE (event) == GST_EVENT_STREAM_START) {
LOCK_DYN (timeline);
if (timeline->priv->group_id == -1) {
if (!gst_event_parse_group_id (event, &timeline->priv->group_id))
timeline->priv->group_id = gst_util_group_id_next ();
}
info->data = gst_event_make_writable (event);
gst_event_set_group_id (GST_PAD_PROBE_INFO_EVENT (info),
timeline->priv->group_id);
UNLOCK_DYN (timeline);
return GST_PAD_PROBE_REMOVE;
}
return GST_PAD_PROBE_OK;
}
static void
pad_added_cb (GESTrack * track, GstPad * pad, TrackPrivate * tr_priv)
{
@ -2221,6 +2250,11 @@ pad_added_cb (GESTrack * track, GstPad * pad, TrackPrivate * tr_priv)
GST_DEBUG ("Signaling no-more-pads");
gst_element_no_more_pads (GST_ELEMENT (tr_priv->timeline));
}
tr_priv->probe_id = gst_pad_add_probe (pad,
GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
(GstPadProbeCallback) _pad_probe_cb, tr_priv->timeline, NULL);
UNLOCK_DYN (tr_priv->timeline);
}