x264enc: fix crash on NULL caps when negotiation happens without a downstream peer

gst-launch-1.0 videotestsrc ! x264enc

1 files changed, 6 insertions, 0 deletions

diff --git a/ext/x264/gstx264enc.c b/ext/x264/gstx264enc.c
index 5fc5e121..8ec88b3d 100644
--- a/ext/x264/gstx264enc.c
+++ b/ext/x264/gstx264enc.c
@@ -1552,6 +1552,10 @@ gst_x264_enc_set_profile_and_level (GstX264Enc * encoder, GstCaps * caps)
   profile = gst_structure_get_string (s, "profile");
 
   allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
+
+  if (allowed_caps == NULL)
+    goto no_peer;
+
   if (!gst_caps_can_intersect (allowed_caps, caps)) {
     allowed_caps = gst_caps_make_writable (allowed_caps);
     allowed_caps = gst_caps_truncate (allowed_caps);
@@ -1581,6 +1585,8 @@ gst_x264_enc_set_profile_and_level (GstX264Enc * encoder, GstCaps * caps)
   }
   gst_caps_unref (allowed_caps);
 
+no_peer:
+
   return TRUE;
 }