sout_announce: use a static mutex instead of a variable.

src/stream_output/announce.c

@@ -49,6 +49,9 @@ static void sap_destroy (vlc_object_t *p_this)
 }
 
 #undef sout_AnnounceRegisterSDP
+
+static vlc_mutex_t sap_mutex = VLC_STATIC_MUTEX;
+
 /**
  *  Registers a new session with the announce handler, using a pregenerated SDP
  *
@@ -81,12 +84,7 @@ sout_AnnounceRegisterSDP( vlc_object_t *obj, const char *psz_sdp,
         vlc_freeaddrinfo (res);
     }
 
-    vlc_value_t lockval;
-    if (var_Create (obj->p_libvlc, "sap_mutex", VLC_VAR_MUTEX)
-     || var_Get (obj->p_libvlc, "sap_mutex", &lockval))
-       goto error;
-
-    vlc_mutex_lock (lockval.p_address);
+    vlc_mutex_lock (&sap_mutex);
     sap_handler_t *p_sap = libvlc_priv (obj->p_libvlc)->p_sap;
     if (p_sap == NULL)
     {
@@ -96,7 +94,7 @@ sout_AnnounceRegisterSDP( vlc_object_t *obj, const char *psz_sdp,
     }
     else
         vlc_object_hold ((vlc_object_t *)p_sap);
-    vlc_mutex_unlock (lockval.p_address);
+    vlc_mutex_unlock (&sap_mutex);
 
     if (p_sap == NULL)
         goto error;
@@ -127,12 +125,9 @@ int sout_AnnounceUnRegister( vlc_object_t *obj,
     msg_Dbg (obj, "removing SAP session");
     SAP_Del (p_sap, p_session);
 
-    vlc_value_t lockval;
-    var_Create (obj->p_libvlc, "sap_mutex", VLC_VAR_MUTEX);
-    var_Get (obj->p_libvlc, "sap_mutex", &lockval);
-    vlc_mutex_lock (lockval.p_address);
+    vlc_mutex_lock (&sap_mutex);
     vlc_object_release ((vlc_object_t *)p_sap);
-    vlc_mutex_unlock (lockval.p_address);
+    vlc_mutex_unlock (&sap_mutex);
 
     free (p_session->psz_sdp);
     free (p_session);