commit 6ddf178f579311a476a7ddf56f2f376079ba9f23
author Mathieu Duponchelle <mathieu@centricular.com> Tue May 29 13:03:54 2018 +0200
committer Jan Schmidt <jan@centricular.com> Thu Jun 28 00:25:00 2018 +1000
tree 76a8336a73c964dfa053f3b93e1e63de57886c37
parent e09a4a3e8071068a31fc46f227caf68082720c68

webrtcbin: copy sticky events on our ghostpads

This lets users call gst_pad_get_current_caps on newly-added
pads to easily determine what to plug them into.

We cannot copy sticky events unconditionally in core,
see #719437

https://bugzilla.gnome.org/show_bug.cgi?id=796387

ext/webrtc/gstwebrtcbin.c

diff --git a/ext/webrtc/gstwebrtcbin.c b/ext/webrtc/gstwebrtcbin.c
index a28b936..233cb99 100644
--- a/ext/webrtc/gstwebrtcbin.c
+++ b/ext/webrtc/gstwebrtcbin.c
@@ -3289,6 +3289,17 @@
   return arr;
 }
 
+static gboolean
+copy_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data)
+{
+  GstPad *gpad = GST_PAD_CAST (user_data);
+
+  GST_DEBUG_OBJECT (gpad, "store sticky event %" GST_PTR_FORMAT, *event);
+  gst_pad_store_sticky_event (gpad, *event);
+
+  return TRUE;
+}
+
 /* === rtpbin signal implementations === */
 
 static void
@@ -3333,6 +3344,7 @@
 
     if (webrtc->priv->running)
       gst_pad_set_active (GST_PAD (pad), TRUE);
+    gst_pad_sticky_events_foreach (new_pad, copy_sticky_events, pad);
     gst_element_add_pad (GST_ELEMENT (webrtc), GST_PAD (pad));
     _remove_pending_pad (webrtc, pad);