avfilter/af_surround: check that upmix func ptr is valid

2 years ago · 9bbd3b3b17
parent e0fbf89939
commit 9bbd3b3b17
1 changed files with 2 additions and 1 deletions
--- a/libavfilter/af_surround.c
+++ b/libavfilter/af_surround.c
@ -1949,7 +1949,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
                            ff_filter_get_nb_threads(ctx)));

    s->filter(ctx);
-    ff_filter_execute(ctx, s->upmix, NULL, NULL, outlink->ch_layout.nb_channels);
+    if (s->upmix)
+        ff_filter_execute(ctx, s->upmix, NULL, NULL, outlink->ch_layout.nb_channels);

    out = ff_get_audio_buffer(outlink, s->hop_size);
    if (!out)