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webrtcbin: Fix potential deadlock when closing before any data was sent

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A blocking pad probe is added on new sink pads, it's usually removed after the
caps have been negotiated or the signaling state switched to stable, but if that
never happens and the pad is released we kept the pad probe active, leaving the
pad blocked, preventing clean disposal.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4529>
This commit is contained in:
Philippe Normand 2023-05-02 18:14:20 +01:00 committed by GStreamer Marge Bot
parent 83026f6289
commit 4db12345d1
1 changed files with 5 additions and 0 deletions
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subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c
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@ -8214,6 +8214,11 @@ gst_webrtc_bin_release_pad (GstElement * element, GstPad * pad)
gst_caps_replace (&webrtc_pad->received_caps, NULL); gst_caps_replace (&webrtc_pad->received_caps, NULL);
PC_UNLOCK (webrtc); PC_UNLOCK (webrtc);
if (webrtc_pad->block_id) {
gst_pad_remove_probe (GST_PAD (pad), webrtc_pad->block_id);
webrtc_pad->block_id = 0;
}
_remove_pad (webrtc, webrtc_pad); _remove_pad (webrtc, webrtc_pad);
PC_LOCK (webrtc); PC_LOCK (webrtc);