base: Make upstream events MT-safe

diff --git a/libs/gst/base/gstbasesrc.c b/libs/gst/base/gstbasesrc.c
index 1b86703..595c467 100644 (file)
--- a/libs/gst/base/gstbasesrc.c
+++ b/libs/gst/base/gstbasesrc.c
@@ -1759,6 +1759,8 @@ gst_base_src_event_handler (GstPad * pad, GstEvent * event)
   gboolean result = FALSE;
 
   src = GST_BASE_SRC (gst_pad_get_parent (pad));
+  if (G_UNLIKELY (src == NULL))
+    return FALSE;
   bclass = GST_BASE_SRC_GET_CLASS (src);
 
   if (bclass->event) {

diff --git a/libs/gst/base/gstbasetransform.c b/libs/gst/base/gstbasetransform.c
index 76fec60..95d0f45 100644 (file)
--- a/libs/gst/base/gstbasetransform.c
+++ b/libs/gst/base/gstbasetransform.c
@@ -2085,6 +2085,9 @@ gst_base_transform_src_event (GstPad * pad, GstEvent * event)
   gboolean ret = TRUE;
 
   trans = GST_BASE_TRANSFORM (gst_pad_get_parent (pad));
+  if (G_UNLIKELY (trans == NULL))
+    return FALSE;
+
   bclass = GST_BASE_TRANSFORM_GET_CLASS (trans);
 
   if (bclass->src_event)