The call to the Session is made before we call ::process(), from the AudioEngine. Currently, only MIDI triggers care about this.
4f7c1aba24 libardour: infrastructure for notifying routes of tempo map change
libs/ardour/ardour/route.h | 1 +
libs/ardour/ardour/session.h | 1 +
libs/ardour/route.cc | 8 ++++++++
libs/ardour/session.cc | 12 ++++++++++++
4 files changed, 22 insertions(+)