This fixes various issues with integer controls (some values are not
reachable due to incorrect rounding in AutoSpin) and also pulls
in the various benefits of BarController:
* mouse-drags
* numeric entry
* alternative entry modes (piano-keyboard, tempo-based values)
If this style remains, ClickBox & AutoSpin should be removed from
the codebase.
Removing a Track does not delete its playlists and one can keep
Playlists after Cleanup. Don't crash if a the track that the playlist
originally belonged to does no longer exist.
Set accumulated capture-latency for physical-outputs
and accumulated playback-latency for physical-inputs
after Ardour is done setting all non-physical port latencies.
This will be needed for latency-compensation of the complete graph.
Session::post_playback_latency() sets the actual route latency,
so that playback latency notifications need to come after capture-
latency (backends follow the same rule: capture first).
NB. Session::initialize_latencies() was already using the correct order
If disk-monitoring is disabled: disk-reader position is not relevant.
If Rec-arm is off: disk-writer position is not relevant.
But...
Play -> [plugins] -> Record
is basically a bounce and best done using the bounce operation.
(faster than realtime).
Input + Play -> Record -> Output
Ardour would need to align playback with the Input to be recorded
and at the same time align it with output, so that a player can play
along on the same track. That's not possible without a time-machine (or
a 2nd play processor).
While it can work in theory under some special circumstances, allowing
the disk-reader before the disk-writer is really just confusing,
error prone and valid uses cases are better handled by dedicated
operations.
"i18n.h" needs to be included last, after types have been defined or
clang bails out:
"call to function 'operator<<' is not visible in the template definition"
Once a session has been saved by a more recent version or a different
variant, the session file is tied to that version/variant.
The created-with version is only for debug purposes and internal use.
