Add rtp_get_rtcp_file_handle function

Patch by Josh Allmann, joshua dot allmann at gmail

Originally committed as revision 24929 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/rtpdec.h

@@ -72,6 +72,11 @@ void rtp_send_punch_packets(URLContext* rtp_handle);
  */
 int rtp_check_and_send_back_rr(RTPDemuxContext *s, int count);
 
+/**
+ * Get the file handle for the RTCP socket.
+ */
+int rtp_get_rtcp_file_handle(URLContext *h);
+
 // these statistics are used for rtcp receiver reports...
 typedef struct {
     uint16_t max_seq;           ///< highest sequence number seen

libavformat/rtpproto.c

@@ -373,6 +373,11 @@ static int rtp_get_file_handle(URLContext *h)
     return s->rtp_fd;
 }
 
+int rtp_get_rtcp_file_handle(URLContext *h) {
+    RTPContext *s = h->priv_data;
+    return s->rtcp_fd;
+}
+
 URLProtocol rtp_protocol = {
     "rtp",
     rtp_open,