From 87a7a7567f2a8941d17334a176f8ecd24288380f Mon Sep 17 00:00:00 2001
From: Jan Schmidt <jan@centricular.com>
Date: Wed, 24 Jul 2024 20:58:01 +1000
Subject: [PATCH] webrtcbin: tracked maximum pad serial better

If a sink pad with a specific index is requested, also
increase the maximum pad serial number if necessary, so
that mixing fixed sink_X requests with unspecific sink_%u
requests works.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7237>
---
 subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c b/subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c
index c4954e4bfe..61b8127d9c 100644
--- a/subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c
+++ b/subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c
@@ -8285,6 +8285,9 @@ gst_webrtc_bin_request_new_pad (GstElement * element, GstPadTemplate * templ,
     /* parse serial number from requested padname */
     serial = g_ascii_strtoull (&name[5], NULL, 10);
     lock_mline = TRUE;
+    if (serial >= webrtc->priv->max_sink_pad_serial) {
+      webrtc->priv->max_sink_pad_serial = serial + 1;
+    }
   }
 
   if (lock_mline) {