From 7f78a8428ef6180464c9844958bdb3deebca18b0 Mon Sep 17 00:00:00 2001
From: Mathieu Duponchelle <mathieu@centricular.com>
Date: Thu, 8 Jun 2023 15:31:30 +0200
Subject: [PATCH] webrtcsink: dump discovery pipelines on state changes

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1238>
---
 net/webrtc/src/webrtcsink/imp.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/net/webrtc/src/webrtcsink/imp.rs b/net/webrtc/src/webrtcsink/imp.rs
index cdc46131..96278ec5 100644
--- a/net/webrtc/src/webrtcsink/imp.rs
+++ b/net/webrtc/src/webrtcsink/imp.rs
@@ -2780,6 +2780,20 @@ impl BaseWebRTCSink {
                     );
                     return Err(err.error().into());
                 }
+                gst::MessageView::StateChanged(s) => {
+                    if msg.src() == Some(pipe.0.upcast_ref()) {
+                        pipe.0.debug_to_dot_file_with_ts(
+                            gst::DebugGraphDetails::all(),
+                            format!(
+                                "webrtcsink-discovery-{}-{:?}-{:?}",
+                                pipe.0.name(),
+                                s.old(),
+                                s.current()
+                            ),
+                        );
+                    }
+                    continue;
+                }
                 gst::MessageView::Application(appmsg) => {
                     let caps = match appmsg.structure() {
                         Some(s) => {