From 874b6657102181e626d1fe33ba67a7a2b2e86310 Mon Sep 17 00:00:00 2001
From: Jan Schmidt <jan@centricular.com>
Date: Fri, 18 Nov 2022 04:35:51 +1100
Subject: [PATCH] hlsdemux2: Fill in skipped segments if possible

After reloading a playlist using a delta request, use the previous playlist to
fill in skipped segments if possible.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
---
 .../ext/adaptivedemux2/hls/gsthlsdemux-stream.c            | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/gsthlsdemux-stream.c b/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/gsthlsdemux-stream.c
index 2a1ef1893c..53df6ed2e9 100644
--- a/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/gsthlsdemux-stream.c
+++ b/subprojects/gst-plugins-good/ext/adaptivedemux2/hls/gsthlsdemux-stream.c
@@ -1392,6 +1392,13 @@ download_media_playlist (GstHLSDemuxStream * stream, gchar * uri,
     }
   }
 
+  /* Transfer over any skipped segments from the current playlist if
+   * we did a delta playlist update */
+  if (!playlist_uri_change && current && playlist
+      && playlist->skipped_segments > 0) {
+    gst_hls_media_playlist_sync_skipped_segments (playlist, current);
+  }
+
 out:
   g_free (uri);
   g_free (base_uri);