- Formatting

- Add some comments

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@31495 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 37c4b94..8082068 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -4035,19 +4035,22 @@ static int find_sdp(struct sip_request *req)
        return 0;
 }
 
-/*! \brief Process SIP SDP and activate RTP channels---*/
+/*! \brief Process SIP SDP, select formats and activate RTP channels */
 static int process_sdp(struct sip_pvt *p, struct sip_request *req)
 {
-       const char *m;
+       const char *m;          /* SDP media offer */
        const char *c;
        const char *a;
        char host[258];
        char iabuf[INET_ADDRSTRLEN];
        int len = -1;
-       int portno = -1;
-       int vportno = -1;
+       int portno = -1;        /* Audio port */
+       int vportno = -1;       /* Video port */
+
+       /* Peer capability is the capability in the SDP, non codec is RFC2833 DTMF (101) */     
        int peercapability, peernoncodeccapability;
-       int vpeercapability=0, vpeernoncodeccapability=0;
+
+       int vpeercapability=0, vpeernoncodeccapability=0;       /* Peer's video capabilities */
        struct sockaddr_in sin;
        const char *codecs;
        struct hostent *hp;
@@ -4056,8 +4059,8 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req)
        int destiterator = 0;
        int iterator;
        int sendonly = 0;
-       int x,y;
-       int debug=sip_debug_test_pvt(p);
+       int x, y;
+       int debug = sip_debug_test_pvt(p);
        struct ast_channel *bridgepeer = NULL;
 
        if (!p->rtp) {