From 191b1644d6866cb0220b6668151845d9631bf25d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Wed, 16 Mar 2022 10:25:56 +0200
Subject: [PATCH] fallbacksrc: Flush source before restarting on errors

It might still be blocked downstream for a while, e.g. in the clocksync.

Flushing does not cause any problems as fallbackswitch is not going to
forward it and will only unblock everything up to there.
---
 utils/fallbackswitch/src/fallbacksrc/imp.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/utils/fallbackswitch/src/fallbacksrc/imp.rs b/utils/fallbackswitch/src/fallbacksrc/imp.rs
index b4e68190..88e76012 100644
--- a/utils/fallbackswitch/src/fallbacksrc/imp.rs
+++ b/utils/fallbackswitch/src/fallbacksrc/imp.rs
@@ -2108,6 +2108,9 @@ impl FallbackSrc {
             }
             drop(state_guard);
 
+            gst_debug!(CAT, obj: element, "Flushing source");
+            let _ = source.send_event(gst::event::FlushStart::builder().build());
+
             gst_debug!(CAT, obj: element, "Shutting down source");
             let _ = source.set_state(gst::State::Null);