From 49002fa8a7b6d782788e846de194b4f4c765cea5 Mon Sep 17 00:00:00 2001
From: Edward Hervey <edward@centricular.com>
Date: Mon, 13 Feb 2017 11:17:25 +0100
Subject: [PATCH] rtspsrc: Properly notify missing elements

If the srtp elements are not present, post a message on the bus
informing about the missing plugins.
---
 gst/rtsp/gstrtspsrc.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/gst/rtsp/gstrtspsrc.c b/gst/rtsp/gstrtspsrc.c
index 35bd8c6cb8..17967b3283 100644
--- a/gst/rtsp/gstrtspsrc.c
+++ b/gst/rtsp/gstrtspsrc.c
@@ -2811,6 +2811,11 @@ request_rtp_decoder (GstElement * rtpbin, guint session, GstRTSPStream * stream)
     stream->srtpdec = gst_element_factory_make ("srtpdec", name);
     g_free (name);
 
+    if (stream->srtpdec == NULL) {
+      GST_ELEMENT_ERROR (stream->parent, CORE, MISSING_PLUGIN, (NULL),
+          ("no srtpdec element present!"));
+      return NULL;
+    }
     g_signal_connect (stream->srtpdec, "request-key",
         (GCallback) request_key, stream);
   }
@@ -2839,6 +2844,12 @@ request_rtcp_encoder (GstElement * rtpbin, guint session,
     stream->srtpenc = gst_element_factory_make ("srtpenc", name);
     g_free (name);
 
+    if (stream->srtpenc == NULL) {
+      GST_ELEMENT_ERROR (stream->parent, CORE, MISSING_PLUGIN, (NULL),
+          ("no srtpenc element present!"));
+      return NULL;
+    }
+
     /* get RTCP crypto parameters from caps */
     s = gst_caps_get_structure (stream->srtcpparams, 0);
     if (s) {