From 3be72a6c8676918521a49b2b69bbfe0683a4f28b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olivier=20Cr=C3=AAte?= <olivier.crete@collabora.com>
Date: Tue, 23 Mar 2021 19:51:00 -0400
Subject: [PATCH] webrtc: Reset received_caps when releasing pad

This is to work around a race where the pad is accessed in the
webrtc main thread while being released.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2104>
---
 ext/webrtc/gstwebrtcbin.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ext/webrtc/gstwebrtcbin.c b/ext/webrtc/gstwebrtcbin.c
index 200862aed9..495af81ad9 100644
--- a/ext/webrtc/gstwebrtcbin.c
+++ b/ext/webrtc/gstwebrtcbin.c
@@ -6268,6 +6268,7 @@ gst_webrtc_bin_release_pad (GstElement * element, GstPad * pad)
   if (webrtc_pad->trans)
     gst_object_unref (webrtc_pad->trans);
   webrtc_pad->trans = NULL;
+  gst_caps_replace (&webrtc_pad->received_caps, NULL);
   PC_UNLOCK (webrtc);
 
   _remove_pad (webrtc, webrtc_pad);