From af3f75f3a9d0c60d2c3c1878a7883fe01084cbfb Mon Sep 17 00:00:00 2001
From: Wim Taymans <wim.taymans@collabora.co.uk>
Date: Mon, 12 Nov 2012 11:17:56 +0100
Subject: [PATCH] rtpbuffer: protect against empty buffers

---
 gst-libs/gst/rtp/gstrtpbuffer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gst-libs/gst/rtp/gstrtpbuffer.c b/gst-libs/gst/rtp/gstrtpbuffer.c
index b9d5675225..800752e226 100644
--- a/gst-libs/gst/rtp/gstrtpbuffer.c
+++ b/gst-libs/gst/rtp/gstrtpbuffer.c
@@ -327,6 +327,9 @@ gst_rtp_buffer_map (GstBuffer * buffer, GstMapFlags flags, GstRTPBuffer * rtp)
   g_return_val_if_fail (rtp != NULL, FALSE);
   g_return_val_if_fail (rtp->buffer == NULL, FALSE);
 
+  if (gst_buffer_n_memory (buffer) < 1)
+    goto no_memory;
+
   /* map first memory, this should be the header */
   if (!gst_buffer_map_range (buffer, 0, 1, &rtp->map[0], flags))
     goto map_failed;
@@ -420,6 +423,11 @@ gst_rtp_buffer_map (GstBuffer * buffer, GstMapFlags flags, GstRTPBuffer * rtp)
   return TRUE;
 
   /* ERRORS */
+no_memory:
+  {
+    GST_ERROR ("buffer without memory");
+    return FALSE;
+  }
 map_failed:
   {
     GST_ERROR ("failed to map memory");