allow zero-latency sessions

e.g. sessions with disconnected master-out,
or Dummmy (both jack and ardour) with no latency.

diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index b0ac857bdff007893ca7ccf3403c66f6799daaa8..61825fe9d30de3e3f37e884eba3ac6db9c4ed49f 100644 (file)
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -1660,8 +1660,6 @@ Session::audible_frame () const
 
        offset = worst_playback_latency ();
 
-       assert (offset == 0 || offset >= current_block_size);
-
        if (synced_to_engine()) {
                /* Note: this is basically just sync-to-JACK */
                tf = _engine.transport_frame();