some fixes/tweaks for MTC slaving, some untested

git-svn-id: svn://localhost/ardour2/branches/3.0@6676 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 6 insertions, 0 deletions

diff --git a/libs/ardour/ardour/audioengine.h b/libs/ardour/ardour/audioengine.h
index cf0eafe288..6baa724cf2 100644
--- a/libs/ardour/ardour/audioengine.h
+++ b/libs/ardour/ardour/audioengine.h
@@ -94,6 +94,12 @@ class AudioEngine : public SessionHandlePtr
 		return jack_frame_time (_priv_jack);
 	}
 
+	nframes_t frame_time_at_cycle_start () {
+  	        jack_client_t* _priv_jack = _jack;
+		if (!_running || !_priv_jack) return 0;
+		return jack_last_frame_time (_priv_jack);
+	}
+
 	nframes_t transport_frame () const {
   	        const jack_client_t* _priv_jack = _jack;
 		if (!_running || !_priv_jack) return 0;