2 Copyright (C) 1999-2003 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "libardour-config.h"
29 #include "pbd/error.h"
30 #include "pbd/enumwriter.h"
31 #include "pbd/pthread_utils.h"
32 #include "pbd/memento_command.h"
33 #include "pbd/stacktrace.h"
35 #include "midi++/mmc.h"
36 #include "midi++/port.h"
38 #include "ardour/audioengine.h"
39 #include "ardour/auditioner.h"
40 #include "ardour/butler.h"
41 #include "ardour/click.h"
42 #include "ardour/debug.h"
43 #include "ardour/location.h"
44 #include "ardour/profile.h"
45 #include "ardour/scene_changer.h"
46 #include "ardour/session.h"
47 #include "ardour/slave.h"
48 #include "ardour/operations.h"
53 using namespace ARDOUR;
57 Session::add_post_transport_work (PostTransportWork ptw)
59 PostTransportWork oldval;
60 PostTransportWork newval;
64 oldval = (PostTransportWork) g_atomic_int_get (&_post_transport_work);
65 newval = PostTransportWork (oldval | ptw);
66 if (g_atomic_int_compare_and_exchange (&_post_transport_work, oldval, newval)) {
72 error << "Could not set post transport work! Crazy thread madness, call the programmers" << endmsg;
76 Session::request_input_change_handling ()
78 if (!(_state_of_the_state & (InitialConnecting|Deletion))) {
79 SessionEvent* ev = new SessionEvent (SessionEvent::InputConfigurationChange, SessionEvent::Add, SessionEvent::Immediate, 0, 0.0);
85 Session::request_sync_source (Slave* new_slave)
87 SessionEvent* ev = new SessionEvent (SessionEvent::SetSyncSource, SessionEvent::Add, SessionEvent::Immediate, 0, 0.0);
90 seamless = Config->get_seamless_loop ();
92 if (dynamic_cast<Engine_Slave*>(new_slave)) {
93 /* JACK cannot support seamless looping at present */
94 Config->set_seamless_loop (false);
96 /* reset to whatever the value was before we last switched slaves */
97 Config->set_seamless_loop (_was_seamless);
100 /* save value of seamless from before the switch */
101 _was_seamless = seamless;
103 ev->slave = new_slave;
104 DEBUG_TRACE (DEBUG::Slave, "sent request for new slave\n");
109 Session::request_transport_speed (double speed, bool as_default)
111 SessionEvent* ev = new SessionEvent (SessionEvent::SetTransportSpeed, SessionEvent::Add, SessionEvent::Immediate, 0, speed);
112 ev->third_yes_or_no = true; // as_default
113 DEBUG_TRACE (DEBUG::Transport, string_compose ("Request transport speed = %1 as default = %2\n", speed, as_default));
117 /** Request a new transport speed, but if the speed parameter is exactly zero then use
118 * a very small +ve value to prevent the transport actually stopping. This method should
119 * be used by callers who are varying transport speed but don't ever want to stop it.
122 Session::request_transport_speed_nonzero (double speed, bool as_default)
128 request_transport_speed (speed, as_default);
132 Session::request_track_speed (Track* tr, double speed)
134 SessionEvent* ev = new SessionEvent (SessionEvent::SetTrackSpeed, SessionEvent::Add, SessionEvent::Immediate, 0, speed);
140 Session::request_stop (bool abort, bool clear_state)
142 SessionEvent* ev = new SessionEvent (SessionEvent::SetTransportSpeed, SessionEvent::Add, SessionEvent::Immediate, audible_frame(), 0.0, abort, clear_state);
143 DEBUG_TRACE (DEBUG::Transport, string_compose ("Request transport stop, audible %3 transport %4 abort = %1, clear state = %2\n", abort, clear_state, audible_frame(), _transport_frame));
148 Session::request_locate (framepos_t target_frame, bool with_roll)
150 SessionEvent *ev = new SessionEvent (with_roll ? SessionEvent::LocateRoll : SessionEvent::Locate, SessionEvent::Add, SessionEvent::Immediate, target_frame, 0, false);
151 DEBUG_TRACE (DEBUG::Transport, string_compose ("Request locate to %1\n", target_frame));
156 Session::force_locate (framepos_t target_frame, bool with_roll)
158 SessionEvent *ev = new SessionEvent (with_roll ? SessionEvent::LocateRoll : SessionEvent::Locate, SessionEvent::Add, SessionEvent::Immediate, target_frame, 0, true);
159 DEBUG_TRACE (DEBUG::Transport, string_compose ("Request forced locate to %1\n", target_frame));
164 Session::request_play_loop (bool yn, bool change_transport_roll)
167 Location *location = _locations->auto_loop_location();
170 if (location == 0 && yn) {
171 error << _("Cannot loop - no loop range defined")
176 if (change_transport_roll) {
177 if (transport_rolling()) {
178 /* start looping at current speed */
179 target_speed = transport_speed ();
181 /* currently stopped */
183 /* start looping at normal speed */
190 /* leave the speed alone */
191 target_speed = transport_speed ();
194 ev = new SessionEvent (SessionEvent::SetLoop, SessionEvent::Add, SessionEvent::Immediate, 0, target_speed, yn);
195 DEBUG_TRACE (DEBUG::Transport, string_compose ("Request set loop = %1, change roll state ? %2\n", yn, change_transport_roll));
199 if (!change_transport_roll) {
200 if (!transport_rolling()) {
201 /* we're not changing transport state, but we do want
202 to set up position for the new loop. Don't
203 do this if we're rolling already.
205 request_locate (location->start(), false);
209 if (!change_transport_roll && Config->get_seamless_loop() && transport_rolling()) {
210 // request an immediate locate to refresh the tracks
211 // after disabling looping
212 request_locate (_transport_frame-1, false);
218 Session::request_play_range (list<AudioRange>* range, bool leave_rolling)
220 SessionEvent* ev = new SessionEvent (SessionEvent::SetPlayAudioRange, SessionEvent::Add, SessionEvent::Immediate, 0, (leave_rolling ? 1.0 : 0.0));
222 ev->audio_range = *range;
224 ev->audio_range.clear ();
226 DEBUG_TRACE (DEBUG::Transport, string_compose ("Request play range, leave rolling ? %1\n", leave_rolling));
231 Session::request_cancel_play_range ()
233 SessionEvent* ev = new SessionEvent (SessionEvent::CancelPlayAudioRange, SessionEvent::Add, SessionEvent::Immediate, 0, 0);
239 Session::realtime_stop (bool abort, bool clear_state)
241 DEBUG_TRACE (DEBUG::Transport, string_compose ("realtime stop @ %1\n", _transport_frame));
242 PostTransportWork todo = PostTransportWork (0);
244 /* assume that when we start, we'll be moving forwards */
246 if (_transport_speed < 0.0f) {
247 todo = (PostTransportWork (todo | PostTransportStop | PostTransportReverse));
248 _default_transport_speed = 1.0;
250 todo = PostTransportWork (todo | PostTransportStop);
255 boost::shared_ptr<RouteList> r = routes.reader ();
257 for (RouteList::iterator i = r->begin (); i != r->end(); ++i) {
258 (*i)->realtime_handle_transport_stopped ();
261 DEBUG_TRACE (DEBUG::Transport, string_compose ("stop complete, auto-return scheduled for return to %1\n", _requested_return_frame));
263 /* the duration change is not guaranteed to have happened, but is likely */
265 todo = PostTransportWork (todo | PostTransportDuration);
268 todo = PostTransportWork (todo | PostTransportAbort);
272 todo = PostTransportWork (todo | PostTransportClearSubstate);
276 add_post_transport_work (todo);
279 _clear_event_type (SessionEvent::StopOnce);
280 _clear_event_type (SessionEvent::RangeStop);
281 _clear_event_type (SessionEvent::RangeLocate);
283 /* if we're going to clear loop state, then force disabling record BUT only if we're not doing latched rec-enable */
284 disable_record (true, (!Config->get_latched_record_enable() && clear_state));
286 if (clear_state && !Config->get_loop_is_mode()) {
290 reset_slave_state ();
292 _transport_speed = 0;
293 _target_transport_speed = 0;
295 g_atomic_int_set (&_playback_load, 100);
296 g_atomic_int_set (&_capture_load, 100);
298 if (config.get_use_video_sync()) {
299 waiting_for_sync_offset = true;
302 transport_sub_state = 0;
306 Session::realtime_locate ()
308 boost::shared_ptr<RouteList> r = routes.reader ();
309 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
310 (*i)->realtime_locate ();
315 Session::butler_transport_work ()
319 PostTransportWork ptw;
320 boost::shared_ptr<RouteList> r = routes.reader ();
323 int on_entry = g_atomic_int_get (&_butler->should_do_transport_work);
325 ptw = post_transport_work();
327 DEBUG_TRACE (DEBUG::Transport, string_compose ("Butler transport work, todo = %1 at %2\n", enum_2_string (ptw), (before = g_get_monotonic_time())));
329 if (ptw & PostTransportAdjustPlaybackBuffering) {
330 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
331 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
333 tr->adjust_playback_buffering ();
334 /* and refill those buffers ... */
336 (*i)->non_realtime_locate (_transport_frame);
341 if (ptw & PostTransportAdjustCaptureBuffering) {
342 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
343 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
345 tr->adjust_capture_buffering ();
350 if (ptw & PostTransportCurveRealloc) {
351 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
352 (*i)->curve_reallocate();
356 if (ptw & PostTransportInputChange) {
357 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
358 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
360 tr->non_realtime_input_change ();
365 if (ptw & PostTransportSpeed) {
366 non_realtime_set_speed ();
369 if (ptw & PostTransportReverse) {
372 cumulative_rf_motion = 0;
375 /* don't seek if locate will take care of that in non_realtime_stop() */
377 if (!(ptw & PostTransportLocate)) {
379 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
380 (*i)->non_realtime_locate (_transport_frame);
382 if (on_entry != g_atomic_int_get (&_butler->should_do_transport_work)) {
383 /* new request, stop seeking, and start again */
384 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
391 if (ptw & PostTransportLocate) {
392 DEBUG_TRACE (DEBUG::Transport, "nonrealtime locate invoked from BTW\n");
393 non_realtime_locate ();
396 if (ptw & PostTransportStop) {
397 non_realtime_stop (ptw & PostTransportAbort, on_entry, finished);
399 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
404 if (ptw & PostTransportOverWrite) {
405 non_realtime_overwrite (on_entry, finished);
407 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
412 if (ptw & PostTransportAudition) {
413 non_realtime_set_audition ();
416 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
418 DEBUG_TRACE (DEBUG::Transport, string_compose (X_("Butler transport work all done after %1 usecs\n"), g_get_monotonic_time() - before));
419 DEBUG_TRACE (DEBUG::Transport, X_(string_compose ("Frame %1\n", _transport_frame)));
423 Session::non_realtime_set_speed ()
425 boost::shared_ptr<RouteList> rl = routes.reader();
426 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
427 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
429 tr->non_realtime_set_speed ();
435 Session::non_realtime_overwrite (int on_entry, bool& finished)
437 boost::shared_ptr<RouteList> rl = routes.reader();
438 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
439 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
440 if (tr && tr->pending_overwrite ()) {
441 tr->overwrite_existing_buffers ();
443 if (on_entry != g_atomic_int_get (&_butler->should_do_transport_work)) {
452 Session::non_realtime_locate ()
454 DEBUG_TRACE (DEBUG::Transport, string_compose ("locate tracks to %1\n", _transport_frame));
456 if (Config->get_loop_is_mode() && get_play_loop()) {
458 Location *loc = _locations->auto_loop_location();
460 if (!loc || (_transport_frame < loc->start() || _transport_frame >= loc->end())) {
461 /* jumped out of loop range: stop tracks from looping,
462 but leave loop (mode) enabled.
464 set_track_loop (false);
466 } else if (loc && Config->get_seamless_loop() &&
467 ((loc->start() <= _transport_frame) ||
468 (loc->end() > _transport_frame) ) ) {
470 /* jumping to start of loop. This might have been done before but it is
471 * idempotent and cheap. Doing it here ensures that when we start playback
472 * outside the loop we still flip tracks into the magic seamless mode
475 set_track_loop (true);
478 set_track_loop (false);
483 /* no more looping .. should have been noticed elsewhere */
487 boost::shared_ptr<RouteList> rl = routes.reader();
488 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
489 (*i)->non_realtime_locate (_transport_frame);
492 _scene_changer->locate (_transport_frame);
494 /* XXX: it would be nice to generate the new clicks here (in the non-RT thread)
495 rather than clearing them so that the RT thread has to spend time constructing
496 them (in Session::click).
501 #ifdef USE_TRACKS_CODE_FEATURES
503 Session::select_playhead_priority_target (framepos_t& jump_to)
507 AutoReturnTarget autoreturn = Config->get_auto_return_target_list ();
513 if (Profile->get_trx() && transport_rolling() ) {
514 // We're playing, so do nothing.
515 // Next stop will put us where we need to be.
519 /* Note that the order of checking each AutoReturnTarget flag defines
520 the priority each flag.
522 Ardour/Mixbus: Last Locate
527 Tracks: Range Selection
533 if (autoreturn & RangeSelectionStart) {
534 if (!_range_selection.empty()) {
535 jump_to = _range_selection.from;
537 if (transport_rolling ()) {
538 /* Range selection no longer exists, but we're playing,
539 so do nothing. Next stop will put us where
547 if (jump_to < 0 && (autoreturn & Loop) && get_play_loop()) {
548 /* don't try to handle loop play when synced to JACK */
550 if (!synced_to_engine()) {
551 Location *location = _locations->auto_loop_location();
554 jump_to = location->start();
556 if (Config->get_seamless_loop()) {
557 /* need to get track buffers reloaded */
558 set_track_loop (true);
564 if (jump_to < 0 && (autoreturn & RegionSelectionStart)) {
565 if (!_object_selection.empty()) {
566 jump_to = _object_selection.from;
570 if (jump_to < 0 && (autoreturn & LastLocate)) {
571 jump_to = _last_roll_location;
579 Session::select_playhead_priority_target (framepos_t& jump_to)
581 if (!config.get_auto_return()) {
585 jump_to = _last_roll_location;
592 Session::follow_playhead_priority ()
596 if (select_playhead_priority_target (target)) {
597 request_locate (target);
602 Session::non_realtime_stop (bool abort, int on_entry, bool& finished)
608 PostTransportWork ptw = post_transport_work();
613 boost::shared_ptr<RouteList> rl = routes.reader();
614 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
615 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
616 if (tr && tr->get_captured_frames () != 0) {
622 /* stop and locate are merged here because they share a lot of common stuff */
625 now = localtime (&xnow);
628 auditioner->cancel_audition ();
631 cumulative_rf_motion = 0;
635 begin_reversible_command (Operations::capture);
636 _have_captured = true;
639 DEBUG_TRACE (DEBUG::Transport, X_("Butler PTW: DS stop\n"));
641 if (abort && did_record) {
642 /* no reason to save the session file when we remove sources
644 _state_of_the_state = StateOfTheState (_state_of_the_state|InCleanup);
647 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
648 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
650 tr->transport_stopped_wallclock (*now, xnow, abort);
654 if (abort && did_record) {
655 _state_of_the_state = StateOfTheState (_state_of_the_state & ~InCleanup);
658 boost::shared_ptr<RouteList> r = routes.reader ();
660 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
661 if (!(*i)->is_auditioner()) {
662 (*i)->set_pending_declick (0);
667 commit_reversible_command ();
668 /* increase take name */
669 if (config.get_track_name_take () && !config.get_take_name ().empty()) {
670 string newname = config.get_take_name();
671 config.set_take_name(bump_name_number (newname));
675 if (_engine.running()) {
676 PostTransportWork ptw = post_transport_work ();
677 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
678 (*i)->nonrealtime_handle_transport_stopped (abort, (ptw & PostTransportLocate), (!(ptw & PostTransportLocate) || pending_locate_flush));
680 update_latency_compensation ();
683 bool const auto_return_enabled = (!config.get_external_sync() && (Config->get_auto_return_target_list() || abort));
685 if (auto_return_enabled ||
686 (ptw & PostTransportLocate) ||
687 (_requested_return_frame >= 0) ||
688 synced_to_engine()) {
690 if (pending_locate_flush) {
691 flush_all_inserts ();
694 if ((auto_return_enabled || synced_to_engine() || _requested_return_frame >= 0) &&
695 !(ptw & PostTransportLocate)) {
697 /* no explicit locate queued */
699 bool do_locate = false;
701 if (_requested_return_frame >= 0) {
703 /* explicit return request pre-queued in event list. overrides everything else */
705 _transport_frame = _requested_return_frame;
711 if (select_playhead_priority_target (jump_to)) {
713 _transport_frame = jump_to;
718 _transport_frame = _last_roll_location;
723 _requested_return_frame = -1;
726 _engine.transport_locate (_transport_frame);
734 /* do this before seeking, because otherwise the tracks will do the wrong thing in seamless loop mode.
737 if (ptw & PostTransportClearSubstate) {
739 if (!Config->get_loop_is_mode()) {
744 /* this for() block can be put inside the previous if() and has the effect of ... ??? what */
746 DEBUG_TRACE (DEBUG::Transport, X_("Butler PTW: locate\n"));
747 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
748 DEBUG_TRACE (DEBUG::Transport, string_compose ("Butler PTW: locate on %1\n", (*i)->name()));
749 (*i)->non_realtime_locate (_transport_frame);
751 if (on_entry != g_atomic_int_get (&_butler->should_do_transport_work)) {
753 /* we will be back */
760 /* don't bother with this stuff if we're disconnected from the engine,
761 because there will be no process callbacks to deliver stuff from
764 if (_engine.connected() && !_engine.freewheeling()) {
765 // need to queue this in the next RT cycle
766 _send_timecode_update = true;
768 if (!dynamic_cast<MTC_Slave*>(_slave)) {
769 send_immediate_mmc (MIDI::MachineControlCommand (MIDI::MachineControl::cmdStop));
771 /* This (::non_realtime_stop()) gets called by main
772 process thread, which will lead to confusion
773 when calling AsyncMIDIPort::write().
775 Something must be done. XXX
777 send_mmc_locate (_transport_frame);
781 if ((ptw & PostTransportLocate) && get_record_enabled()) {
782 /* This is scheduled by realtime_stop(), which is also done
783 * when a slave requests /locate/ for an initial sync.
784 * We can't hold up the slave for long with a save() here,
785 * without breaking its initial sync cycle.
787 * save state only if there's no slave or if it's not yet locked.
789 if (!_slave || !_slave->locked()) {
790 DEBUG_TRACE (DEBUG::Transport, X_("Butler PTW: requests save\n"));
791 SaveSessionRequested (_current_snapshot_name);
796 /* always try to get rid of this */
798 remove_pending_capture_state ();
800 /* save the current state of things if appropriate */
802 if (did_record && !saved) {
803 SaveSessionRequested (_current_snapshot_name);
806 if (ptw & PostTransportStop) {
808 if (!Config->get_loop_is_mode()) {
813 PositionChanged (_transport_frame); /* EMIT SIGNAL */
814 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC with speed = %1\n", _transport_speed));
815 TransportStateChange (); /* EMIT SIGNAL */
817 /* and start it up again if relevant */
819 if ((ptw & PostTransportLocate) && !config.get_external_sync() && pending_locate_roll) {
820 request_transport_speed (1.0);
823 /* Even if we didn't do a pending locate roll this time, we don't want it hanging
824 around for next time.
826 pending_locate_roll = false;
830 Session::check_declick_out ()
832 bool locate_required = transport_sub_state & PendingLocate;
834 /* this is called after a process() iteration. if PendingDeclickOut was set,
835 it means that we were waiting to declick the output (which has just been
836 done) before maybe doing something else. this is where we do that "something else".
838 note: called from the audio thread.
841 if (transport_sub_state & PendingDeclickOut) {
843 if (locate_required) {
844 start_locate (pending_locate_frame, pending_locate_roll, pending_locate_flush);
845 transport_sub_state &= ~(PendingDeclickOut|PendingLocate);
847 if (!(transport_sub_state & StopPendingCapture)) {
848 stop_transport (pending_abort);
849 transport_sub_state &= ~(PendingDeclickOut|PendingLocate);
853 } else if (transport_sub_state & PendingLoopDeclickOut) {
854 /* Nothing else to do here; we've declicked, and the loop event will be along shortly */
855 transport_sub_state &= ~PendingLoopDeclickOut;
860 Session::unset_play_loop ()
864 clear_events (SessionEvent::AutoLoop);
865 clear_events (SessionEvent::AutoLoopDeclick);
866 set_track_loop (false);
869 if (Config->get_seamless_loop()) {
870 /* likely need to flush track buffers: this will locate us to wherever we are */
871 add_post_transport_work (PostTransportLocate);
872 _butler->schedule_transport_work ();
878 Session::set_track_loop (bool yn)
880 Location* loc = _locations->auto_loop_location ();
886 boost::shared_ptr<RouteList> rl = routes.reader ();
888 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
889 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
890 if (tr && !tr->hidden()) {
891 tr->set_loop (yn ? loc : 0);
897 Session::set_play_loop (bool yn, double speed)
899 /* Called from event-handling context */
903 if (yn == play_loop || (actively_recording() && yn) || (loc = _locations->auto_loop_location()) == 0) {
904 /* nothing to do, or can't change loop status while recording */
908 if (yn && Config->get_seamless_loop() && synced_to_engine()) {
909 warning << string_compose (
910 _("Seamless looping cannot be supported while %1 is using JACK transport.\n"
911 "Recommend changing the configured options"), PROGRAM_NAME)
925 if (Config->get_seamless_loop()) {
926 if (!Config->get_loop_is_mode()) {
927 /* set all tracks to use internal looping */
928 set_track_loop (true);
930 /* we will do this in the locate to the start OR when we hit the end
931 * of the loop for the first time
935 /* set all tracks to NOT use internal looping */
936 set_track_loop (false);
939 /* Put the delick and loop events in into the event list. The declick event will
940 cause a de-clicking fade-out just before the end of the loop, and it will also result
941 in a fade-in when the loop restarts. The AutoLoop event will peform the actual loop.
946 auto_loop_declick_range (loc, dcp, dcl);
947 merge_event (new SessionEvent (SessionEvent::AutoLoopDeclick, SessionEvent::Replace, dcp, dcl, 0.0f));
948 merge_event (new SessionEvent (SessionEvent::AutoLoop, SessionEvent::Replace, loc->end(), loc->start(), 0.0f));
950 /* if requested to roll, locate to start of loop and
951 * roll but ONLY if we're not already rolling.
953 args: positition, roll=true, flush=true, with_loop=false, force buffer refill if seamless looping
956 if (Config->get_loop_is_mode()) {
957 /* loop IS a transport mode: if already
958 rolling, do not locate to loop start.
960 if (!transport_rolling() && (speed != 0.0)) {
961 start_locate (loc->start(), true, true, false, Config->get_seamless_loop());
965 start_locate (loc->start(), true, true, false, Config->get_seamless_loop());
975 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC2 with speed = %1\n", _transport_speed));
976 TransportStateChange ();
979 Session::flush_all_inserts ()
981 boost::shared_ptr<RouteList> r = routes.reader ();
983 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
984 (*i)->flush_processors ();
989 Session::start_locate (framepos_t target_frame, bool with_roll, bool with_flush, bool with_loop, bool force)
991 if (target_frame < 0) {
992 error << _("Locate called for negative sample position - ignored") << endmsg;
996 if (synced_to_engine()) {
1001 _slave->speed_and_position (sp, pos);
1003 if (target_frame != pos) {
1005 if (config.get_jack_time_master()) {
1006 /* actually locate now, since otherwise jack_timebase_callback
1007 will use the incorrect _transport_frame and report an old
1008 and incorrect time to Jack transport
1010 locate (target_frame, with_roll, with_flush, with_loop, force);
1013 /* tell JACK to change transport position, and we will
1014 follow along later in ::follow_slave()
1017 _engine.transport_locate (target_frame);
1019 if (sp != 1.0f && with_roll) {
1020 _engine.transport_start ();
1026 locate (target_frame, with_roll, with_flush, with_loop, force);
1031 Session::micro_locate (framecnt_t distance)
1033 boost::shared_ptr<RouteList> rl = routes.reader();
1034 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1035 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1036 if (tr && !tr->can_internal_playback_seek (distance)) {
1041 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1042 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1044 tr->internal_playback_seek (distance);
1048 _transport_frame += distance;
1052 /** @param with_mmc true to send a MMC locate command when the locate is done */
1054 Session::locate (framepos_t target_frame, bool with_roll, bool with_flush, bool for_seamless_loop, bool force, bool with_mmc)
1056 bool need_butler = false;
1058 /* Locates for seamless looping are fairly different from other
1059 * locates. They assume that the diskstream buffers for each track
1060 * already have the correct data in them, and thus there is no need to
1061 * actually tell the tracks to locate. What does need to be done,
1062 * though, is all the housekeeping that is associated with non-linear
1063 * changes in the value of _transport_frame.
1066 DEBUG_TRACE (DEBUG::Transport, string_compose ("rt-locate to %1, roll %2 flush %3 seamless %4 force %5 mmc %6\n",
1067 target_frame, with_roll, with_flush, for_seamless_loop, force, with_mmc));
1069 if (actively_recording() && !for_seamless_loop) {
1073 if (!force && _transport_frame == target_frame && !loop_changing && !for_seamless_loop) {
1075 set_transport_speed (1.0, 0, false);
1077 loop_changing = false;
1078 Located (); /* EMIT SIGNAL */
1082 if (_transport_speed && !for_seamless_loop) {
1083 /* Schedule a declick. We'll be called again when its done.
1084 We only do it this way for ordinary locates, not those
1085 due to **seamless** loops.
1088 if (!(transport_sub_state & PendingDeclickOut)) {
1089 transport_sub_state |= (PendingDeclickOut|PendingLocate);
1090 pending_locate_frame = target_frame;
1091 pending_locate_roll = with_roll;
1092 pending_locate_flush = with_flush;
1097 // Update Timecode time
1098 // [DR] FIXME: find out exactly where this should go below
1099 _transport_frame = target_frame;
1100 _last_roll_or_reversal_location = target_frame;
1101 timecode_time(_transport_frame, transmitting_timecode_time);
1102 outbound_mtc_timecode_frame = _transport_frame;
1103 next_quarter_frame_to_send = 0;
1105 /* do "stopped" stuff if:
1107 * we are rolling AND
1108 * no autoplay in effect AND
1109 * we're not going to keep rolling after the locate AND
1110 * !(playing a loop with JACK sync)
1114 bool transport_was_stopped = !transport_rolling();
1116 if (!transport_was_stopped && (!auto_play_legal || !config.get_auto_play()) && !with_roll && !(synced_to_engine() && play_loop) &&
1117 (!Profile->get_trx() || !(config.get_external_sync() && !synced_to_engine()))) {
1118 realtime_stop (false, true); // XXX paul - check if the 2nd arg is really correct
1119 transport_was_stopped = true;
1121 /* otherwise tell the world that we located */
1125 if (force || !for_seamless_loop || loop_changing) {
1127 PostTransportWork todo = PostTransportLocate;
1129 if (with_roll && transport_was_stopped) {
1130 todo = PostTransportWork (todo | PostTransportRoll);
1133 add_post_transport_work (todo);
1138 /* this is functionally what clear_clicks() does but with a tentative lock */
1140 Glib::Threads::RWLock::WriterLock clickm (click_lock, Glib::Threads::TRY_LOCK);
1142 if (clickm.locked()) {
1144 for (Clicks::iterator i = clicks.begin(); i != clicks.end(); ++i) {
1153 /* switch from input if we're going to roll */
1154 if (Config->get_monitoring_model() == HardwareMonitoring) {
1155 set_track_monitor_input_status (!config.get_auto_input());
1158 /* otherwise we're going to stop, so do the opposite */
1159 if (Config->get_monitoring_model() == HardwareMonitoring) {
1160 set_track_monitor_input_status (true);
1164 /* cancel looped playback if transport pos outside of loop range */
1167 Location* al = _locations->auto_loop_location();
1170 if (_transport_frame < al->start() || _transport_frame > al->end()) {
1172 // located outside the loop: cancel looping directly, this is called from event handling context
1174 have_looped = false;
1176 if (!Config->get_loop_is_mode()) {
1177 set_play_loop (false, _transport_speed);
1179 if (Config->get_seamless_loop()) {
1180 /* this will make the non_realtime_locate() in the butler
1181 which then causes seek() in tracks actually do the right
1184 set_track_loop (false);
1188 } else if (_transport_frame == al->start()) {
1190 // located to start of loop - this is looping, basically
1192 if (for_seamless_loop) {
1196 if (_last_roll_location != al->start()) {
1197 /* didn't start at loop start - playback must have
1198 * started before loop since we've now hit the loop
1201 add_post_transport_work (PostTransportLocate);
1207 // this is only necessary for seamless looping
1209 boost::shared_ptr<RouteList> rl = routes.reader();
1211 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1212 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1214 if (tr && tr->record_enabled ()) {
1215 // tell it we've looped, so it can deal with the record state
1216 tr->transport_looped (_transport_frame);
1222 TransportLooped(); // EMIT SIGNAL
1228 _butler->schedule_transport_work ();
1231 loop_changing = false;
1233 _send_timecode_update = true;
1236 send_mmc_locate (_transport_frame);
1239 _last_roll_location = _last_roll_or_reversal_location = _transport_frame;
1240 Located (); /* EMIT SIGNAL */
1243 /** Set the transport speed.
1244 * Called from the process thread.
1245 * @param speed New speed
1248 Session::set_transport_speed (double speed, framepos_t destination_frame, bool abort, bool clear_state, bool as_default)
1250 DEBUG_TRACE (DEBUG::Transport, string_compose ("@ %5 Set transport speed to %1, abort = %2 clear_state = %3, current = %4 as_default %6\n",
1251 speed, abort, clear_state, _transport_speed, _transport_frame, as_default));
1253 if (_transport_speed == speed) {
1254 if (as_default && speed == 0.0) { // => reset default transport speed. hacky or what?
1255 _default_transport_speed = 1.0;
1260 if (actively_recording() && speed != 1.0 && speed != 0.0) {
1261 /* no varispeed during recording */
1262 DEBUG_TRACE (DEBUG::Transport, string_compose ("No varispeed during recording cur_speed %1, frame %2\n",
1263 _transport_speed, _transport_frame));
1267 _target_transport_speed = fabs(speed);
1269 /* 8.0 max speed is somewhat arbitrary but based on guestimates regarding disk i/o capability
1270 and user needs. We really need CD-style "skip" playback for ffwd and rewind.
1274 speed = min (8.0, speed);
1275 } else if (speed < 0) {
1276 speed = max (-8.0, speed);
1279 if (transport_rolling() && speed == 0.0) {
1281 /* we are rolling and we want to stop */
1283 if (Config->get_monitoring_model() == HardwareMonitoring) {
1284 set_track_monitor_input_status (true);
1287 if (synced_to_engine ()) {
1289 /* do this here because our response to the slave won't
1292 _play_range = false;
1295 _engine.transport_stop ();
1297 bool const auto_return_enabled = (!config.get_external_sync() && (Config->get_auto_return_target_list() || abort));
1299 if (!auto_return_enabled) {
1300 _requested_return_frame = destination_frame;
1303 stop_transport (abort);
1306 } else if (transport_stopped() && speed == 1.0) {
1308 /* we are stopped and we want to start rolling at speed 1 */
1310 if (Config->get_loop_is_mode() && play_loop) {
1312 Location *location = _locations->auto_loop_location();
1314 if (location != 0) {
1315 if (_transport_frame != location->start()) {
1317 if (Config->get_seamless_loop()) {
1318 /* force tracks to do their thing */
1319 set_track_loop (true);
1322 /* jump to start and then roll from there */
1324 request_locate (location->start(), true);
1330 if (Config->get_monitoring_model() == HardwareMonitoring && config.get_auto_input()) {
1331 set_track_monitor_input_status (false);
1334 if (synced_to_engine()) {
1335 _engine.transport_start ();
1342 /* not zero, not 1.0 ... varispeed */
1344 if ((synced_to_engine()) && speed != 0.0 && speed != 1.0) {
1345 warning << string_compose (
1346 _("Global varispeed cannot be supported while %1 is connected to JACK transport control"),
1352 if (actively_recording()) {
1356 if (speed > 0.0 && _transport_frame == current_end_frame()) {
1360 if (speed < 0.0 && _transport_frame == 0) {
1366 /* if we are reversing relative to the current speed, or relative to the speed
1367 before the last stop, then we have to do extra work.
1370 PostTransportWork todo = PostTransportWork (0);
1372 if ((_transport_speed && speed * _transport_speed < 0.0) || (_last_transport_speed * speed < 0.0) || (_last_transport_speed == 0.0 && speed < 0.0)) {
1373 todo = PostTransportWork (todo | PostTransportReverse);
1374 _last_roll_or_reversal_location = _transport_frame;
1377 _last_transport_speed = _transport_speed;
1378 _transport_speed = speed;
1381 _default_transport_speed = speed;
1384 boost::shared_ptr<RouteList> rl = routes.reader();
1385 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1386 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1387 if (tr && tr->realtime_set_speed (tr->speed(), true)) {
1388 todo = PostTransportWork (todo | PostTransportSpeed);
1393 add_post_transport_work (todo);
1394 _butler->schedule_transport_work ();
1397 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC3 with speed = %1\n", _transport_speed));
1399 /* throttle signal emissions.
1400 * when slaved [_last]_transport_speed
1401 * usually changes every cycle (tiny amounts due to DLL).
1402 * Emitting a signal every cycle is overkill and unwarranted.
1404 * Using _last_transport_speed is not acceptable,
1405 * since it allows for large changes over a long period
1406 * of time. Hence we introduce a dedicated variable to keep track
1408 * The 0.2% dead-zone is somewhat arbitrary. Main use-case
1409 * for TransportStateChange() here is the ShuttleControl display.
1411 if (fabs (_signalled_varispeed - speed) > .002
1412 // still, signal hard changes to 1.0 and 0.0:
1413 || ( speed == 1.0 && _signalled_varispeed != 1.0)
1414 || ( speed == 0.0 && _signalled_varispeed != 0.0)
1417 TransportStateChange (); /* EMIT SIGNAL */
1418 _signalled_varispeed = speed;
1424 /** Stop the transport. */
1426 Session::stop_transport (bool abort, bool clear_state)
1428 if (_transport_speed == 0.0f) {
1432 if (!get_transport_declick_required()) {
1434 /* stop has not yet been scheduled */
1436 boost::shared_ptr<RouteList> rl = routes.reader();
1437 framepos_t stop_target = audible_frame();
1439 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1440 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1442 tr->prepare_to_stop (_transport_frame, stop_target);
1448 if (actively_recording() && /* we are recording */
1449 worst_input_latency() > current_block_size) { /* input latency exceeds block size, so simple 1 cycle delay before stop is not enough */
1451 /* we need to capture the audio that is still somewhere in the pipeline between
1452 wherever it was generated and the process callback. This means that even though
1453 the user (or something else) has asked us to stop, we have to roll
1454 past this point and then reset the playhead/transport location to
1455 the position at which the stop was requested.
1457 we still need playback to "stop" now, however, which is why we schedule
1461 DEBUG_TRACE (DEBUG::Transport, string_compose ("stop transport requested @ %1, scheduled for + %2 = %3, abort = %4\n",
1462 _transport_frame, _worst_input_latency,
1463 _transport_frame + _worst_input_latency,
1466 SessionEvent *ev = new SessionEvent (SessionEvent::StopOnce, SessionEvent::Replace,
1467 _transport_frame + _worst_input_latency,
1472 /* request a declick at the start of the next process cycle() so that playback ceases.
1473 It will remain silent until we actually stop (at the StopOnce event somewhere in
1474 the future). The extra flag (StopPendingCapture) is set to ensure that check_declick_out()
1475 does not stop the transport too early.
1477 new_bits = SubState (PendingDeclickOut|StopPendingCapture);
1481 /* Not recording, schedule a declick in the next process() cycle and then stop at its end */
1483 new_bits = PendingDeclickOut;
1487 /* we'll be called again after the declick */
1488 transport_sub_state = SubState (transport_sub_state|new_bits);
1489 pending_abort = abort;
1495 /* declick was scheduled, but we've been called again, which means it is really time to stop
1497 XXX: we should probably split this off into its own method and call it explicitly.
1500 realtime_stop (abort, clear_state);
1501 _butler->schedule_transport_work ();
1505 /** Called from the process thread */
1507 Session::start_transport ()
1509 DEBUG_TRACE (DEBUG::Transport, "start_transport\n");
1511 _last_roll_location = _transport_frame;
1512 _last_roll_or_reversal_location = _transport_frame;
1514 have_looped = false;
1516 /* if record status is Enabled, move it to Recording. if its
1517 already Recording, move it to Disabled.
1520 switch (record_status()) {
1522 if (!config.get_punch_in()) {
1529 disable_record (false);
1537 transport_sub_state |= PendingDeclickIn;
1539 _transport_speed = _default_transport_speed;
1540 _target_transport_speed = _transport_speed;
1542 boost::shared_ptr<RouteList> rl = routes.reader();
1543 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1544 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1546 tr->realtime_set_speed (tr->speed(), true);
1550 if (!_engine.freewheeling()) {
1551 Timecode::Time time;
1552 timecode_time_subframes (_transport_frame, time);
1553 if (!dynamic_cast<MTC_Slave*>(_slave)) {
1554 send_immediate_mmc (MIDI::MachineControlCommand (MIDI::MachineControl::cmdDeferredPlay));
1558 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC4 with speed = %1\n", _transport_speed));
1559 TransportStateChange (); /* EMIT SIGNAL */
1562 /** Do any transport work in the audio thread that needs to be done after the
1563 * transport thread is finished. Audio thread, realtime safe.
1566 Session::post_transport ()
1568 PostTransportWork ptw = post_transport_work ();
1570 if (ptw & PostTransportAudition) {
1571 if (auditioner && auditioner->auditioning()) {
1572 process_function = &Session::process_audition;
1574 process_function = &Session::process_with_events;
1578 if (ptw & PostTransportStop) {
1580 transport_sub_state = 0;
1583 if (ptw & PostTransportLocate) {
1585 if (((!config.get_external_sync() && (auto_play_legal && config.get_auto_play())) && !_exporting) || (ptw & PostTransportRoll)) {
1588 transport_sub_state = 0;
1593 /* XXX is this really safe? shouldn't we just be unsetting the bits that we actually
1596 set_post_transport_work (PostTransportWork (0));
1600 Session::reset_rf_scale (framecnt_t motion)
1602 cumulative_rf_motion += motion;
1604 if (cumulative_rf_motion < 4 * _current_frame_rate) {
1606 } else if (cumulative_rf_motion < 8 * _current_frame_rate) {
1608 } else if (cumulative_rf_motion < 16 * _current_frame_rate) {
1620 Session::mtc_status_changed (bool yn)
1622 g_atomic_int_set (&_mtc_active, yn);
1623 MTCSyncStateChanged( yn );
1627 Session::ltc_status_changed (bool yn)
1629 g_atomic_int_set (&_ltc_active, yn);
1630 LTCSyncStateChanged( yn );
1634 Session::use_sync_source (Slave* new_slave)
1636 /* Runs in process() context */
1638 bool non_rt_required = false;
1640 /* XXX this deletion is problematic because we're in RT context */
1645 MTC_Slave* mtc_slave = dynamic_cast<MTC_Slave*>(_slave);
1647 mtc_slave->ActiveChanged.connect_same_thread (mtc_status_connection, boost::bind (&Session::mtc_status_changed, this, _1));
1648 MTCSyncStateChanged(mtc_slave->locked() );
1650 if (g_atomic_int_get (&_mtc_active) ){
1651 g_atomic_int_set (&_mtc_active, 0);
1652 MTCSyncStateChanged( false );
1654 mtc_status_connection.disconnect ();
1657 LTC_Slave* ltc_slave = dynamic_cast<LTC_Slave*> (_slave);
1659 ltc_slave->ActiveChanged.connect_same_thread (ltc_status_connection, boost::bind (&Session::ltc_status_changed, this, _1));
1660 LTCSyncStateChanged (ltc_slave->locked() );
1662 if (g_atomic_int_get (&_ltc_active) ){
1663 g_atomic_int_set (&_ltc_active, 0);
1664 LTCSyncStateChanged( false );
1666 ltc_status_connection.disconnect ();
1669 DEBUG_TRACE (DEBUG::Slave, string_compose ("set new slave to %1\n", _slave));
1671 // need to queue this for next process() cycle
1672 _send_timecode_update = true;
1674 boost::shared_ptr<RouteList> rl = routes.reader();
1675 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1676 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1677 if (tr && !tr->hidden()) {
1678 if (tr->realtime_set_speed (tr->speed(), true)) {
1679 non_rt_required = true;
1681 tr->set_slaved (_slave != 0);
1685 if (non_rt_required) {
1686 add_post_transport_work (PostTransportSpeed);
1687 _butler->schedule_transport_work ();
1694 Session::drop_sync_source ()
1696 request_sync_source (0);
1700 Session::switch_to_sync_source (SyncSource src)
1704 DEBUG_TRACE (DEBUG::Slave, string_compose ("Setting up sync source %1\n", enum_2_string (src)));
1708 if (_slave && dynamic_cast<MTC_Slave*>(_slave)) {
1713 new_slave = new MTC_Slave (*this, *_midi_ports->mtc_input_port());
1716 catch (failed_constructor& err) {
1722 if (_slave && dynamic_cast<LTC_Slave*>(_slave)) {
1727 new_slave = new LTC_Slave (*this);
1730 catch (failed_constructor& err) {
1737 if (_slave && dynamic_cast<MIDIClock_Slave*>(_slave)) {
1742 new_slave = new MIDIClock_Slave (*this, *_midi_ports->midi_clock_input_port(), 24);
1745 catch (failed_constructor& err) {
1751 if (_slave && dynamic_cast<Engine_Slave*>(_slave)) {
1755 if (config.get_video_pullup() != 0.0f) {
1759 new_slave = new Engine_Slave (*AudioEngine::instance());
1767 request_sync_source (new_slave);
1771 Session::set_track_speed (Track* track, double speed)
1773 if (track->realtime_set_speed (speed, false)) {
1774 add_post_transport_work (PostTransportSpeed);
1775 _butler->schedule_transport_work ();
1781 Session::unset_play_range ()
1783 _play_range = false;
1784 _clear_event_type (SessionEvent::RangeStop);
1785 _clear_event_type (SessionEvent::RangeLocate);
1789 Session::set_play_range (list<AudioRange>& range, bool leave_rolling)
1793 /* Called from event-processing context */
1795 unset_play_range ();
1797 if (range.empty()) {
1798 /* _play_range set to false in unset_play_range()
1800 if (!leave_rolling) {
1801 /* stop transport */
1802 SessionEvent* ev = new SessionEvent (SessionEvent::SetTransportSpeed, SessionEvent::Add, SessionEvent::Immediate, 0, 0.0f, false);
1810 /* cancel loop play */
1813 list<AudioRange>::size_type sz = range.size();
1817 list<AudioRange>::iterator i = range.begin();
1818 list<AudioRange>::iterator next;
1820 while (i != range.end()) {
1825 /* locating/stopping is subject to delays for declicking.
1828 framepos_t requested_frame = i->end;
1830 if (requested_frame > current_block_size) {
1831 requested_frame -= current_block_size;
1833 requested_frame = 0;
1836 if (next == range.end()) {
1837 ev = new SessionEvent (SessionEvent::RangeStop, SessionEvent::Add, requested_frame, 0, 0.0f);
1839 ev = new SessionEvent (SessionEvent::RangeLocate, SessionEvent::Add, requested_frame, (*next).start, 0.0f);
1847 } else if (sz == 1) {
1849 ev = new SessionEvent (SessionEvent::RangeStop, SessionEvent::Add, range.front().end, 0, 0.0f);
1854 /* save range so we can do auto-return etc. */
1856 current_audio_range = range;
1858 /* now start rolling at the right place */
1860 ev = new SessionEvent (SessionEvent::LocateRoll, SessionEvent::Add, SessionEvent::Immediate, range.front().start, 0.0f, false);
1863 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC5 with speed = %1\n", _transport_speed));
1864 TransportStateChange ();
1868 Session::request_bounded_roll (framepos_t start, framepos_t end)
1870 AudioRange ar (start, end, 0);
1871 list<AudioRange> lar;
1874 request_play_range (&lar, true);
1878 Session::set_requested_return_frame (framepos_t return_to)
1880 _requested_return_frame = return_to;
1884 Session::request_roll_at_and_return (framepos_t start, framepos_t return_to)
1886 SessionEvent *ev = new SessionEvent (SessionEvent::LocateRollLocate, SessionEvent::Add, SessionEvent::Immediate, return_to, 1.0);
1887 ev->target2_frame = start;
1892 Session::engine_halted ()
1896 /* there will be no more calls to process(), so
1897 we'd better clean up for ourselves, right now.
1899 but first, make sure the butler is out of
1907 realtime_stop (false, true);
1908 non_realtime_stop (false, 0, ignored);
1909 transport_sub_state = 0;
1911 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC6 with speed = %1\n", _transport_speed));
1912 TransportStateChange (); /* EMIT SIGNAL */
1917 Session::xrun_recovery ()
1921 Xrun (_transport_frame); /* EMIT SIGNAL */
1923 if (Config->get_stop_recording_on_xrun() && actively_recording()) {
1925 /* it didn't actually halt, but we need
1926 to handle things in the same way.
1934 Session::route_processors_changed (RouteProcessorChange c)
1936 if (ignore_route_processor_changes) {
1940 if (c.type == RouteProcessorChange::MeterPointChange) {
1945 if (c.type == RouteProcessorChange::RealTimeChange) {
1950 update_latency_compensation ();
1957 Session::allow_auto_play (bool yn)
1959 auto_play_legal = yn;
1963 Session::maybe_stop (framepos_t limit)
1965 if ((_transport_speed > 0.0f && _transport_frame >= limit) || (_transport_speed < 0.0f && _transport_frame == 0)) {
1966 if (synced_to_engine () && config.get_jack_time_master ()) {
1967 _engine.transport_stop ();
1968 } else if (!synced_to_engine ()) {
1977 Session::send_mmc_locate (framepos_t t)
1983 if (!_engine.freewheeling()) {
1984 Timecode::Time time;
1985 timecode_time_subframes (t, time);
1986 send_immediate_mmc (MIDI::MachineControlCommand (time));
1990 /** Ask the transport to not send timecode until further notice. The suspension
1991 * will come into effect some finite time after this call, and timecode_transmission_suspended()
1992 * should be checked by the caller to find out when.
1995 Session::request_suspend_timecode_transmission ()
1997 SessionEvent* ev = new SessionEvent (SessionEvent::SetTimecodeTransmission, SessionEvent::Add, SessionEvent::Immediate, 0, 0, false);
2002 Session::request_resume_timecode_transmission ()
2004 SessionEvent* ev = new SessionEvent (SessionEvent::SetTimecodeTransmission, SessionEvent::Add, SessionEvent::Immediate, 0, 0, true);
2009 Session::timecode_transmission_suspended () const
2011 return g_atomic_int_get (&_suspend_timecode_transmission) == 1;