From d346e7560682a824caf38add63cb3a55164de808 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olivier=20Cr=C3=AAte?= <olivier.crete@collabora.com>
Date: Mon, 12 Aug 2013 12:27:33 -0400
Subject: [PATCH] srtp: Let packets through without touching them if no crypto
 or auth is set

---
 ext/srtp/gstsrtpdec.c |  6 ++++++
 ext/srtp/gstsrtpenc.c | 10 ++++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/ext/srtp/gstsrtpdec.c b/ext/srtp/gstsrtpdec.c
index 2c4c7275bd..41efb1dde6 100644
--- a/ext/srtp/gstsrtpdec.c
+++ b/ext/srtp/gstsrtpdec.c
@@ -858,6 +858,11 @@ gst_srtp_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf,
     goto drop_buffer;
   }
 
+  if (!STREAM_HAS_CRYPTO (stream)) {
+    GST_OBJECT_UNLOCK (filter);
+    goto push_out;
+  }
+
   GST_LOG_OBJECT (pad, "Received %s buffer of size %" G_GSIZE_FORMAT
       " with SSRC = %u", is_rtcp ? "RTCP" : "RTP", gst_buffer_get_size (buf),
       ssrc);
@@ -925,6 +930,7 @@ unprotect:
   if (gst_srtp_get_soft_limit_reached ())
     request_key_with_signal (filter, ssrc, SIGNAL_SOFT_LIMIT);
 
+push_out:
   /* Push buffer to source pad */
   otherpad = (GstPad *) gst_pad_get_element_private (pad);
   ret = gst_pad_push (otherpad, buf);
diff --git a/ext/srtp/gstsrtpenc.c b/ext/srtp/gstsrtpenc.c
index 8ce2a6bc41..ddd5661126 100644
--- a/ext/srtp/gstsrtpenc.c
+++ b/ext/srtp/gstsrtpenc.c
@@ -938,8 +938,6 @@ gst_srtp_enc_chain (GstPad * pad, GstObject * parent, GstBuffer * buf,
 
   GST_OBJECT_LOCK (filter);
 
-  size_max = gst_buffer_get_size (buf) + SRTP_MAX_TRAILER_LEN + 10;
-
   /* Update source caps if asked */
   if (do_setcaps) {
     GstCaps *caps;
@@ -956,7 +954,15 @@ gst_srtp_enc_chain (GstPad * pad, GstObject * parent, GstBuffer * buf,
     GST_OBJECT_LOCK (filter);
   }
 
+  if (!HAS_CRYPTO (filter)) {
+    GST_OBJECT_UNLOCK (filter);
+    otherpad = get_rtp_other_pad (pad);
+    return gst_pad_push (otherpad, buf);
+  }
+
+
   /* Create a bigger buffer to add protection */
+  size_max = gst_buffer_get_size (buf) + SRTP_MAX_TRAILER_LEN + 10;
   bufout = gst_buffer_new_allocate (NULL, size_max, NULL);
 
   gst_buffer_map (buf, &mapin, GST_MAP_READ);