Added pjmedia_sdp_neg_was_aswer_remote()

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@501 74dad513-b988-da41-8d7b-12977e46ad98

2 files changed, 32 insertions, 2 deletions

diff --git a/pjmedia/include/pjmedia/sdp_neg.h b/pjmedia/include/pjmedia/sdp_neg.h
index 55c74401..d2d977e0 100644
--- a/pjmedia/include/pjmedia/sdp_neg.h
+++ b/pjmedia/include/pjmedia/sdp_neg.h
@@ -392,6 +392,22 @@ PJ_DECL(pj_status_t)
 pjmedia_sdp_neg_get_active_remote( pjmedia_sdp_neg *neg,
 				   const pjmedia_sdp_session **remote);
 
+
+/**
+ * Determine whether remote sent answer (as opposed to offer) on the
+ * last negotiation. This function can only be called in state
+ * PJMEDIA_SDP_NEG_STATE_DONE.
+ *
+ * @param neg		The SDP negotiator instance.
+ *
+ * @return		Non-zero if it was remote who sent answer,
+ *			otherwise zero if it was local who supplied
+ *			answer.
+ */
+PJ_DECL(pj_bool_t)
+pjmedia_sdp_neg_was_answer_remote(pjmedia_sdp_neg *neg);
+
+
 /**
  * Get the current remote SDP offer or answer. Application can only 
  * call this function in state PJMEDIA_SDP_NEG_STATE_REMOTE_OFFER or
diff --git a/pjmedia/src/pjmedia/sdp_neg.c b/pjmedia/src/pjmedia/sdp_neg.c
index dd954305..41383d6d 100644
--- a/pjmedia/src/pjmedia/sdp_neg.c
+++ b/pjmedia/src/pjmedia/sdp_neg.c
@@ -32,6 +32,7 @@ struct pjmedia_sdp_neg
 {
     pjmedia_sdp_neg_state state;	    /**< Negotiator state.	     */
     pj_bool_t		  has_remote_answer;
+    pj_bool_t		  answer_was_remote;
 
     pjmedia_sdp_session	*initial_sdp,	    /**< Initial local SDP	     */
 			*active_local_sdp,  /**< Currently active local SDP. */
@@ -174,6 +175,16 @@ pjmedia_sdp_neg_get_active_remote( pjmedia_sdp_neg *neg,
     return PJ_SUCCESS;
 }
 
+
+PJ_DEF(pj_bool_t)
+pjmedia_sdp_neg_was_answer_remote(pjmedia_sdp_neg *neg)
+{
+    PJ_ASSERT_RETURN(neg, PJ_FALSE);
+
+    return neg->answer_was_remote;
+}
+
+
 PJ_DEF(pj_status_t)
 pjmedia_sdp_neg_get_neg_remote( pjmedia_sdp_neg *neg,
 				const pjmedia_sdp_session **remote)
@@ -274,7 +285,7 @@ pjmedia_sdp_neg_set_remote_answer( pj_pool_t *pool,
 
     /* We're ready to negotiate. */
     neg->state = PJMEDIA_SDP_NEG_STATE_WAIT_NEGO;
-    neg->has_remote_answer = 1;
+    neg->has_remote_answer = PJ_TRUE;
     neg->neg_remote_sdp = pjmedia_sdp_session_clone(pool, remote);
  
     return PJ_SUCCESS;
@@ -917,9 +928,12 @@ PJ_DEF(pj_status_t) pjmedia_sdp_neg_negotiate( pj_pool_t *pool,
     /* State is DONE regardless */
     neg->state = PJMEDIA_SDP_NEG_STATE_DONE;
 
+    /* Save state */
+    neg->answer_was_remote = neg->has_remote_answer;
+
     /* Clear temporary SDP */
     neg->neg_local_sdp = neg->neg_remote_sdp = NULL;
-    neg->has_remote_answer = 0;
+    neg->has_remote_answer = PJ_FALSE;
 
     return status;
 }