From 9011a58491b089461762a8f550892de434af5c29 Mon Sep 17 00:00:00 2001
From: Seungha Yang <seungha@centricular.com>
Date: Sat, 14 Nov 2020 03:20:19 +0900
Subject: [PATCH] vah264dec: Allow missing reference picture

baseclass might provide reference picture list with null picture.
Ensure picture before filling picture information.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1809>
---
 sys/va/gstvah264dec.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sys/va/gstvah264dec.c b/sys/va/gstvah264dec.c
index e90f84bb44..184af430fa 100644
--- a/sys/va/gstvah264dec.c
+++ b/sys/va/gstvah264dec.c
@@ -198,7 +198,13 @@ _fill_ref_pic_list (VAPictureH264 va_reflist[32], GArray * reflist)
 
   for (i = 0; i < reflist->len; i++) {
     GstH264Picture *picture = g_array_index (reflist, GstH264Picture *, i);
-    _fill_vaapi_pic (&va_reflist[i], picture);
+
+    if (picture) {
+      _fill_vaapi_pic (&va_reflist[i], picture);
+    } else {
+      /* list might include null picture if reference picture was missing */
+      _init_vaapi_pic (&va_reflist[i]);
+    }
   }
 
   for (; i < 32; i++)