VLC_EXPORT( int, sout_AnnounceUnRegister, (sout_instance_t *,session_descriptor_t* ) );
VLC_EXPORT(session_descriptor_t*,sout_AnnounceSessionCreate, (vlc_object_t *obj, const char *cfgpref) );
-VLC_EXPORT(int, sout_SessionSetMedia, (vlc_object_t *obj, session_descriptor_t *, char *, char *, int, char *, int) );
+VLC_EXPORT(int, sout_SessionSetMedia, (vlc_object_t *obj, session_descriptor_t *, const char *, const char *, int, const char *, int) );
VLC_EXPORT(void, sout_AnnounceSessionDestroy, (session_descriptor_t *) );
VLC_EXPORT(announce_method_t*, sout_SAPMethod, (void) );
VLC_EXPORT(void, sout_MethodRelease, (announce_method_t *) );