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videoaggregator: Don't crash when setting pad properties after the aggregator was finalized

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The application might still have a strong reference to a pad and change
properties, which should work without crashing.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/649>
This commit is contained in:
Sebastian Dröge 2020-05-01 11:27:46 +03:00 committed by GStreamer Merge Bot
parent 380dffb0d0
commit 637bbac622
1 changed files with 15 additions and 10 deletions
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17
gst-libs/gst/video/gstvideoaggregator.c
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@ -123,17 +123,24 @@ gst_video_aggregator_pad_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec) const GValue * value, GParamSpec * pspec)
{ {
GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (object); GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (object);
GstVideoAggregator *vagg =
GST_VIDEO_AGGREGATOR (gst_pad_get_parent (GST_PAD (pad)));
switch (prop_id) { switch (prop_id) {
case PROP_PAD_ZORDER: case PROP_PAD_ZORDER:{
GstVideoAggregator *vagg =
GST_VIDEO_AGGREGATOR (gst_pad_get_parent (GST_PAD (pad)));
if (vagg) {
GST_OBJECT_LOCK (vagg); GST_OBJECT_LOCK (vagg);
pad->priv->zorder = g_value_get_uint (value); pad->priv->zorder = g_value_get_uint (value);
GST_ELEMENT (vagg)->sinkpads = g_list_sort (GST_ELEMENT (vagg)->sinkpads, GST_ELEMENT (vagg)->sinkpads =
g_list_sort (GST_ELEMENT (vagg)->sinkpads,
(GCompareFunc) pad_zorder_compare); (GCompareFunc) pad_zorder_compare);
GST_OBJECT_UNLOCK (vagg); GST_OBJECT_UNLOCK (vagg);
gst_object_unref (vagg);
} else {
pad->priv->zorder = g_value_get_uint (value);
}
break; break;
}
case PROP_PAD_REPEAT_AFTER_EOS: case PROP_PAD_REPEAT_AFTER_EOS:
pad->priv->repeat_after_eos = g_value_get_boolean (value); pad->priv->repeat_after_eos = g_value_get_boolean (value);
break; break;
@ -144,8 +151,6 @@ gst_video_aggregator_pad_set_property (GObject * object, guint prop_id,
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break; break;
} }
gst_object_unref (vagg);
} }
static GstFlowReturn static GstFlowReturn