Cherry-pick 261626@main (e2ccf6b). https://bugs.webkit.org/show_bug.c…

…gi?id=253833

    [GStreamer][WebRTC] Ensure end-point pipeline is stopped when destroying
    https://bugs.webkit.org/show_bug.cgi?id=253833

    Reviewed by Xabier Rodriguez-Calvar.

    As subject says, make sure the pipeline is teared down during disposal of the EndPoint.

    * Source/WebCore/Modules/mediastream/gstreamer/GStreamerMediaEndpoint.cpp:
    (WebCore::GStreamerMediaEndpoint::~GStreamerMediaEndpoint):
    (WebCore::GStreamerMediaEndpoint::teardownPipeline):
    * Source/WebCore/Modules/mediastream/gstreamer/GStreamerMediaEndpoint.h:

    Canonical link: https://commits.webkit.org/261626@main

Source/WebCore/Modules/mediastream/gstreamer/GStreamerMediaEndpoint.cpp

@@ -80,6 +80,13 @@ GStreamerMediaEndpoint::GStreamerMediaEndpoint(GStreamerPeerConnectionBackend& p
     });
 }
 
+GStreamerMediaEndpoint::~GStreamerMediaEndpoint()
+{
+    if (!m_pipeline)
+        return;
+    teardownPipeline();
+}
+
 bool GStreamerMediaEndpoint::initializePipeline()
 {
     static uint32_t nPipeline = 0;
@@ -176,6 +183,7 @@ bool GStreamerMediaEndpoint::initializePipeline()
 void GStreamerMediaEndpoint::teardownPipeline()
 {
     ASSERT(m_pipeline);
+    GST_DEBUG_OBJECT(m_pipeline.get(), "Tearing down.");
 #if !RELEASE_LOG_DISABLED
     stopLoggingStats();
 #endif

Source/WebCore/Modules/mediastream/gstreamer/GStreamerMediaEndpoint.h

@@ -52,7 +52,7 @@ class GStreamerMediaEndpoint : public ThreadSafeRefCounted<GStreamerMediaEndpoin
 {
 public:
     static Ref<GStreamerMediaEndpoint> create(GStreamerPeerConnectionBackend& peerConnection) { return adoptRef(*new GStreamerMediaEndpoint(peerConnection)); }
-    ~GStreamerMediaEndpoint() = default;
+    ~GStreamerMediaEndpoint();
 
     bool setConfiguration(MediaEndpointConfiguration&);
     void restartIce();