add absolute_codec_string

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4125 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -779,7 +779,7 @@ static void set_local_sdp(private_object_t *tech_pvt, char *ip, uint32_t port, c
 static void tech_set_codecs(private_object_t *tech_pvt)
 {
     switch_channel_t *channel;
-    char *codec_string = NULL;
+    char *abs, *codec_string = NULL;
     char *csdyn = NULL;
     char *ocodec = NULL;
 
@@ -797,6 +797,9 @@ static void tech_set_codecs(private_object_t *tech_pvt)
     assert (channel != NULL);
 
 
+    if ((abs = switch_channel_get_variable(channel, "absolute_codec_string"))) {
+        codec_string = abs;
+    } else {
         if (!(codec_string = switch_channel_get_variable(channel, "codec_string"))) {
             codec_string = tech_pvt->profile->codec_string;
         }
@@ -812,6 +815,7 @@ static void tech_set_codecs(private_object_t *tech_pvt)
                 }
             }
         }
+    }
 
 	if (codec_string) {
         tech_pvt->profile->codec_order_last = switch_separate_string(codec_string, ',', tech_pvt->profile->codec_order, SWITCH_MAX_CODECS);