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;
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 reset_slave_state ();
288 _transport_speed = 0;
289 _target_transport_speed = 0;
291 g_atomic_int_set (&_playback_load, 100);
292 g_atomic_int_set (&_capture_load, 100);
294 if (config.get_use_video_sync()) {
295 waiting_for_sync_offset = true;
298 transport_sub_state = 0;
302 Session::realtime_locate ()
304 boost::shared_ptr<RouteList> r = routes.reader ();
305 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
306 (*i)->realtime_locate ();
311 Session::butler_transport_work ()
315 PostTransportWork ptw;
316 boost::shared_ptr<RouteList> r = routes.reader ();
318 int on_entry = g_atomic_int_get (&_butler->should_do_transport_work);
320 ptw = post_transport_work();
322 DEBUG_TRACE (DEBUG::Transport, string_compose ("Butler transport work, todo = %1\n", enum_2_string (ptw)));
324 if (ptw & PostTransportAdjustPlaybackBuffering) {
325 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
326 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
328 tr->adjust_playback_buffering ();
329 /* and refill those buffers ... */
331 (*i)->non_realtime_locate (_transport_frame);
336 if (ptw & PostTransportAdjustCaptureBuffering) {
337 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
338 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
340 tr->adjust_capture_buffering ();
345 if (ptw & PostTransportCurveRealloc) {
346 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
347 (*i)->curve_reallocate();
351 if (ptw & PostTransportInputChange) {
352 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
353 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
355 tr->non_realtime_input_change ();
360 if (ptw & PostTransportSpeed) {
361 non_realtime_set_speed ();
364 if (ptw & PostTransportReverse) {
367 cumulative_rf_motion = 0;
370 /* don't seek if locate will take care of that in non_realtime_stop() */
372 if (!(ptw & PostTransportLocate)) {
374 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
375 (*i)->non_realtime_locate (_transport_frame);
377 if (on_entry != g_atomic_int_get (&_butler->should_do_transport_work)) {
378 /* new request, stop seeking, and start again */
379 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
386 if (ptw & PostTransportLocate) {
387 DEBUG_TRACE (DEBUG::Transport, "nonrealtime locate invoked from BTW\n");
388 non_realtime_locate ();
391 if (ptw & PostTransportStop) {
392 non_realtime_stop (ptw & PostTransportAbort, on_entry, finished);
394 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
399 if (ptw & PostTransportOverWrite) {
400 non_realtime_overwrite (on_entry, finished);
402 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
407 if (ptw & PostTransportAudition) {
408 non_realtime_set_audition ();
411 g_atomic_int_dec_and_test (&_butler->should_do_transport_work);
413 DEBUG_TRACE (DEBUG::Transport, X_("Butler transport work all done\n"));
414 DEBUG_TRACE (DEBUG::Transport, X_(string_compose ("Frame %1\n", _transport_frame)));
418 Session::non_realtime_set_speed ()
420 boost::shared_ptr<RouteList> rl = routes.reader();
421 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
422 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
424 tr->non_realtime_set_speed ();
430 Session::non_realtime_overwrite (int on_entry, bool& finished)
432 boost::shared_ptr<RouteList> rl = routes.reader();
433 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
434 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
435 if (tr && tr->pending_overwrite ()) {
436 tr->overwrite_existing_buffers ();
438 if (on_entry != g_atomic_int_get (&_butler->should_do_transport_work)) {
447 Session::non_realtime_locate ()
449 DEBUG_TRACE (DEBUG::Transport, string_compose ("locate tracks to %1\n", _transport_frame));
451 if (Config->get_loop_is_mode() && get_play_loop()) {
452 Location *loc = _locations->auto_loop_location();
453 if (!loc || (_transport_frame < loc->start() || _transport_frame >= loc->end())) {
454 /* jumped out of loop range: stop tracks from looping,
455 but leave loop (mode) enabled.
457 set_track_loop (false);
461 boost::shared_ptr<RouteList> rl = routes.reader();
462 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
463 (*i)->non_realtime_locate (_transport_frame);
466 _scene_changer->locate (_transport_frame);
468 /* XXX: it would be nice to generate the new clicks here (in the non-RT thread)
469 rather than clearing them so that the RT thread has to spend time constructing
470 them (in Session::click).
476 Session::non_realtime_stop (bool abort, int on_entry, bool& finished)
482 PostTransportWork ptw = post_transport_work();
487 boost::shared_ptr<RouteList> rl = routes.reader();
488 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
489 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
490 if (tr && tr->get_captured_frames () != 0) {
496 /* stop and locate are merged here because they share a lot of common stuff */
499 now = localtime (&xnow);
502 auditioner->cancel_audition ();
505 cumulative_rf_motion = 0;
509 begin_reversible_command (Operations::capture);
510 _have_captured = true;
513 DEBUG_TRACE (DEBUG::Transport, X_("Butler PTW: DS stop\n"));
515 if (abort && did_record) {
516 /* no reason to save the session file when we remove sources
518 _state_of_the_state = StateOfTheState (_state_of_the_state|InCleanup);
521 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
522 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
524 tr->transport_stopped_wallclock (*now, xnow, abort);
528 if (abort && did_record) {
529 _state_of_the_state = StateOfTheState (_state_of_the_state & ~InCleanup);
532 boost::shared_ptr<RouteList> r = routes.reader ();
534 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
535 if (!(*i)->is_auditioner()) {
536 (*i)->set_pending_declick (0);
541 commit_reversible_command ();
542 /* increase take name */
543 if (config.get_track_name_take () && !config.get_take_name ().empty()) {
544 string newname = config.get_take_name();
545 config.set_take_name(bump_name_number (newname));
549 if (_engine.running()) {
550 PostTransportWork ptw = post_transport_work ();
551 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
552 (*i)->nonrealtime_handle_transport_stopped (abort, (ptw & PostTransportLocate), (!(ptw & PostTransportLocate) || pending_locate_flush));
554 update_latency_compensation ();
557 bool const auto_return_enabled =
558 (!config.get_external_sync() && (config.get_auto_return() || abort));
560 if (auto_return_enabled ||
561 (ptw & PostTransportLocate) ||
562 (_requested_return_frame >= 0) ||
563 synced_to_engine()) {
565 if (pending_locate_flush) {
566 flush_all_inserts ();
569 if ((auto_return_enabled || synced_to_engine() || _requested_return_frame >= 0) &&
570 !(ptw & PostTransportLocate)) {
572 /* no explicit locate queued */
574 bool do_locate = false;
576 if (_requested_return_frame >= 0) {
578 /* explicit return request pre-queued in event list. overrides everything else */
580 _transport_frame = _requested_return_frame;
584 if (config.get_auto_return()) {
588 /* don't try to handle loop play when synced to JACK */
590 if (!synced_to_engine()) {
592 Location *location = _locations->auto_loop_location();
595 _transport_frame = location->start();
597 _transport_frame = _last_roll_location;
602 } else if (_play_range) {
604 /* return to start of range */
606 if (!current_audio_range.empty()) {
607 _transport_frame = current_audio_range.front().start;
613 /* regular auto-return */
615 _transport_frame = _last_roll_location;
620 _transport_frame = _last_roll_location;
625 _requested_return_frame = -1;
628 _engine.transport_locate (_transport_frame);
636 /* do this before seeking, because otherwise the tracks will do the wrong thing in seamless loop mode.
639 if (ptw & PostTransportClearSubstate) {
641 if (!Config->get_loop_is_mode()) {
646 /* this for() block can be put inside the previous if() and has the effect of ... ??? what */
648 DEBUG_TRACE (DEBUG::Transport, X_("Butler PTW: locate\n"));
649 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
650 DEBUG_TRACE (DEBUG::Transport, string_compose ("Butler PTW: locate on %1\n", (*i)->name()));
651 (*i)->non_realtime_locate (_transport_frame);
653 if (on_entry != g_atomic_int_get (&_butler->should_do_transport_work)) {
655 /* we will be back */
662 /* don't bother with this stuff if we're disconnected from the engine,
663 because there will be no process callbacks to deliver stuff from
666 if (_engine.connected() && !_engine.freewheeling()) {
667 // need to queue this in the next RT cycle
668 _send_timecode_update = true;
670 if (!dynamic_cast<MTC_Slave*>(_slave)) {
671 send_immediate_mmc (MIDI::MachineControlCommand (MIDI::MachineControl::cmdStop));
673 /* This (::non_realtime_stop()) gets called by main
674 process thread, which will lead to confusion
675 when calling AsyncMIDIPort::write().
677 Something must be done. XXX
679 send_mmc_locate (_transport_frame);
683 if ((ptw & PostTransportLocate) && get_record_enabled()) {
684 /* This is scheduled by realtime_stop(), which is also done
685 * when a slave requests /locate/ for an initial sync.
686 * We can't hold up the slave for long with a save() here,
687 * without breaking its initial sync cycle.
689 * save state only if there's no slave or if it's not yet locked.
691 if (!_slave || !_slave->locked()) {
692 DEBUG_TRACE (DEBUG::Transport, X_("Butler PTW: requests save\n"));
693 SaveSessionRequested (_current_snapshot_name);
698 /* always try to get rid of this */
700 remove_pending_capture_state ();
702 /* save the current state of things if appropriate */
704 if (did_record && !saved) {
705 SaveSessionRequested (_current_snapshot_name);
708 if (ptw & PostTransportStop) {
710 if (!Config->get_loop_is_mode()) {
715 PositionChanged (_transport_frame); /* EMIT SIGNAL */
716 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC with speed = %1\n", _transport_speed));
717 TransportStateChange (); /* EMIT SIGNAL */
719 /* and start it up again if relevant */
721 if ((ptw & PostTransportLocate) && !config.get_external_sync() && pending_locate_roll) {
722 request_transport_speed (1.0);
725 /* Even if we didn't do a pending locate roll this time, we don't want it hanging
726 around for next time.
728 pending_locate_roll = false;
732 Session::check_declick_out ()
734 bool locate_required = transport_sub_state & PendingLocate;
736 /* this is called after a process() iteration. if PendingDeclickOut was set,
737 it means that we were waiting to declick the output (which has just been
738 done) before maybe doing something else. this is where we do that "something else".
740 note: called from the audio thread.
743 if (transport_sub_state & PendingDeclickOut) {
745 if (locate_required) {
746 start_locate (pending_locate_frame, pending_locate_roll, pending_locate_flush);
747 transport_sub_state &= ~(PendingDeclickOut|PendingLocate);
749 if (!(transport_sub_state & StopPendingCapture)) {
750 stop_transport (pending_abort);
751 transport_sub_state &= ~(PendingDeclickOut|PendingLocate);
755 } else if (transport_sub_state & PendingLoopDeclickOut) {
756 /* Nothing else to do here; we've declicked, and the loop event will be along shortly */
757 transport_sub_state &= ~PendingLoopDeclickOut;
762 Session::unset_play_loop ()
765 clear_events (SessionEvent::AutoLoop);
766 clear_events (SessionEvent::AutoLoopDeclick);
767 set_track_loop (false);
771 Session::set_track_loop (bool yn)
773 Location* loc = _locations->auto_loop_location ();
779 // set all tracks to NOT use internal looping
780 boost::shared_ptr<RouteList> rl = routes.reader ();
781 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
782 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
783 if (tr && !tr->hidden()) {
784 tr->set_loop (yn ? loc : 0);
790 Session::set_play_loop (bool yn, double speed)
792 /* Called from event-handling context */
796 if (yn == play_loop || (actively_recording() && yn) || (loc = _locations->auto_loop_location()) == 0) {
797 /* nothing to do, or can't change loop status while recording */
801 if (yn && Config->get_seamless_loop() && synced_to_engine()) {
802 warning << string_compose (
803 _("Seamless looping cannot be supported while %1 is using JACK transport.\n"
804 "Recommend changing the configured options"), PROGRAM_NAME)
817 if (Config->get_seamless_loop()) {
818 // set all tracks to use internal looping
819 set_track_loop (true);
821 // set all tracks to NOT use internal looping
822 set_track_loop (false);
825 /* Put the delick and loop events in into the event list. The declick event will
826 cause a de-clicking fade-out just before the end of the loop, and it will also result
827 in a fade-in when the loop restarts. The AutoLoop event will peform the actual loop.
832 auto_loop_declick_range (loc, dcp, dcl);
833 merge_event (new SessionEvent (SessionEvent::AutoLoopDeclick, SessionEvent::Replace, dcp, dcl, 0.0f));
834 merge_event (new SessionEvent (SessionEvent::AutoLoop, SessionEvent::Replace, loc->end(), loc->start(), 0.0f));
836 /* if requested to roll, locate to start of loop and
837 * roll but ONLY if we're not already rolling.
839 args: positition, roll=true, flush=true, with_loop=false, force buffer refill if seamless looping
842 if (Config->get_loop_is_mode()) {
843 /* loop IS a transport mode: if already
844 rolling, do not locate to loop start.
846 if (!transport_rolling() && (speed != 0.0)) {
847 start_locate (loc->start(), true, true, false, Config->get_seamless_loop());
851 start_locate (loc->start(), true, true, false, Config->get_seamless_loop());
861 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC2 with speed = %1\n", _transport_speed));
862 TransportStateChange ();
865 Session::flush_all_inserts ()
867 boost::shared_ptr<RouteList> r = routes.reader ();
869 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
870 (*i)->flush_processors ();
875 Session::start_locate (framepos_t target_frame, bool with_roll, bool with_flush, bool with_loop, bool force)
877 if (target_frame < 0) {
878 error << _("Locate called for negative sample position - ignored") << endmsg;
882 if (synced_to_engine()) {
887 _slave->speed_and_position (sp, pos);
889 if (target_frame != pos) {
891 if (config.get_jack_time_master()) {
892 /* actually locate now, since otherwise jack_timebase_callback
893 will use the incorrect _transport_frame and report an old
894 and incorrect time to Jack transport
896 locate (target_frame, with_roll, with_flush, with_loop, force);
899 /* tell JACK to change transport position, and we will
900 follow along later in ::follow_slave()
903 _engine.transport_locate (target_frame);
905 if (sp != 1.0f && with_roll) {
906 _engine.transport_start ();
912 locate (target_frame, with_roll, with_flush, with_loop, force);
917 Session::micro_locate (framecnt_t distance)
919 boost::shared_ptr<RouteList> rl = routes.reader();
920 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
921 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
922 if (tr && !tr->can_internal_playback_seek (distance)) {
927 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
928 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
930 tr->internal_playback_seek (distance);
934 _transport_frame += distance;
938 /** @param with_mmc true to send a MMC locate command when the locate is done */
940 Session::locate (framepos_t target_frame, bool with_roll, bool with_flush, bool for_seamless_loop, bool force, bool with_mmc)
942 /* Locates for seamless looping are fairly different from other
943 * locates. They assume that the diskstream buffers for each track
944 * already have the correct data in them, and thus there is no need to
945 * actually tell the tracks to locate. What does need to be done,
946 * though, is all the housekeeping that is associated with non-linear
947 * changes in the value of _transport_frame.
950 if (actively_recording() && !for_seamless_loop) {
954 if (!force && _transport_frame == target_frame && !loop_changing && !for_seamless_loop) {
956 set_transport_speed (1.0, 0, false);
958 loop_changing = false;
959 Located (); /* EMIT SIGNAL */
963 if (_transport_speed && !for_seamless_loop) {
964 /* Schedule a declick. We'll be called again when its done.
965 We only do it this way for ordinary locates, not those
966 due to **seamless** loops.
969 if (!(transport_sub_state & PendingDeclickOut)) {
970 transport_sub_state |= (PendingDeclickOut|PendingLocate);
971 pending_locate_frame = target_frame;
972 pending_locate_roll = with_roll;
973 pending_locate_flush = with_flush;
978 // Update Timecode time
979 // [DR] FIXME: find out exactly where this should go below
980 _transport_frame = target_frame;
981 _last_roll_or_reversal_location = target_frame;
982 timecode_time(_transport_frame, transmitting_timecode_time);
983 outbound_mtc_timecode_frame = _transport_frame;
984 next_quarter_frame_to_send = 0;
986 /* do "stopped" stuff if:
989 * no autoplay in effect AND
990 * we're not going to keep rolling after the locate AND
991 * !(playing a loop with JACK sync)
995 bool transport_was_stopped = !transport_rolling();
997 if (transport_was_stopped && (!auto_play_legal || !config.get_auto_play()) && !with_roll && !(synced_to_engine() && play_loop)) {
998 realtime_stop (false, true); // XXX paul - check if the 2nd arg is really correct
999 transport_was_stopped = true;
1001 /* otherwise tell the world that we located */
1005 if (force || !for_seamless_loop || loop_changing) {
1007 PostTransportWork todo = PostTransportLocate;
1009 if (with_roll && transport_was_stopped) {
1010 todo = PostTransportWork (todo | PostTransportRoll);
1013 add_post_transport_work (todo);
1014 _butler->schedule_transport_work ();
1018 /* this is functionally what clear_clicks() does but with a tentative lock */
1020 Glib::Threads::RWLock::WriterLock clickm (click_lock, Glib::Threads::TRY_LOCK);
1022 if (clickm.locked()) {
1024 for (Clicks::iterator i = clicks.begin(); i != clicks.end(); ++i) {
1033 /* switch from input if we're going to roll */
1034 if (Config->get_monitoring_model() == HardwareMonitoring) {
1035 set_track_monitor_input_status (!config.get_auto_input());
1038 /* otherwise we're going to stop, so do the opposite */
1039 if (Config->get_monitoring_model() == HardwareMonitoring) {
1040 set_track_monitor_input_status (true);
1044 /* cancel looped playback if transport pos outside of loop range */
1047 Location* al = _locations->auto_loop_location();
1050 if (_transport_frame < al->start() || _transport_frame > al->end()) {
1052 // located outside the loop: cancel looping directly, this is called from event handling context
1054 if (!Config->get_loop_is_mode()) {
1055 set_play_loop (false, _transport_speed);
1057 /* handled in ::non_realtime_locate() */
1060 } else if (_transport_frame == al->start()) {
1062 // located to start of loop - this is looping, basically
1064 if (for_seamless_loop) {
1066 // this is only necessary for seamless looping
1068 boost::shared_ptr<RouteList> rl = routes.reader();
1070 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1071 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1073 if (tr && tr->record_enabled ()) {
1074 // tell it we've looped, so it can deal with the record state
1075 tr->transport_looped (_transport_frame);
1081 TransportLooped(); // EMIT SIGNAL
1086 loop_changing = false;
1088 _send_timecode_update = true;
1091 send_mmc_locate (_transport_frame);
1094 _last_roll_location = _last_roll_or_reversal_location = _transport_frame;
1095 Located (); /* EMIT SIGNAL */
1098 /** Set the transport speed.
1099 * Called from the process thread.
1100 * @param speed New speed
1103 Session::set_transport_speed (double speed, framepos_t destination_frame, bool abort, bool clear_state, bool as_default)
1105 DEBUG_TRACE (DEBUG::Transport, string_compose ("@ %5 Set transport speed to %1, abort = %2 clear_state = %3, current = %4 as_default %6\n",
1106 speed, abort, clear_state, _transport_speed, _transport_frame, as_default));
1108 if (_transport_speed == speed) {
1109 if (as_default && speed == 0.0) { // => reset default transport speed. hacky or what?
1110 _default_transport_speed = 1.0;
1115 if (actively_recording() && speed != 1.0 && speed != 0.0) {
1116 /* no varispeed during recording */
1117 DEBUG_TRACE (DEBUG::Transport, string_compose ("No varispeed during recording cur_speed %1, frame %2\n",
1118 _transport_speed, _transport_frame));
1122 _target_transport_speed = fabs(speed);
1124 /* 8.0 max speed is somewhat arbitrary but based on guestimates regarding disk i/o capability
1125 and user needs. We really need CD-style "skip" playback for ffwd and rewind.
1129 speed = min (8.0, speed);
1130 } else if (speed < 0) {
1131 speed = max (-8.0, speed);
1134 if (transport_rolling() && speed == 0.0) {
1136 /* we are rolling and we want to stop */
1138 if (Config->get_monitoring_model() == HardwareMonitoring) {
1139 set_track_monitor_input_status (true);
1142 if (synced_to_engine ()) {
1144 /* do this here because our response to the slave won't
1147 _play_range = false;
1150 _engine.transport_stop ();
1152 bool const auto_return_enabled = (!config.get_external_sync() && (config.get_auto_return() || abort));
1154 if (!auto_return_enabled) {
1155 _requested_return_frame = destination_frame;
1158 stop_transport (abort);
1161 if (!Config->get_loop_is_mode()) {
1165 } else if (transport_stopped() && speed == 1.0) {
1167 /* we are stopped and we want to start rolling at speed 1 */
1169 if (Config->get_loop_is_mode() && play_loop) {
1171 Location *location = _locations->auto_loop_location();
1173 if (location != 0) {
1174 if (_transport_frame != location->start()) {
1175 if (Config->get_seamless_loop()) {
1176 /* force tracks to do their thing */
1177 set_track_loop (true);
1179 /* jump to start and then roll from there */
1180 request_locate (location->start(), true);
1186 if (Config->get_monitoring_model() == HardwareMonitoring && config.get_auto_input()) {
1187 set_track_monitor_input_status (false);
1190 if (synced_to_engine()) {
1191 _engine.transport_start ();
1198 /* not zero, not 1.0 ... varispeed */
1200 if ((synced_to_engine()) && speed != 0.0 && speed != 1.0) {
1201 warning << string_compose (
1202 _("Global varispeed cannot be supported while %1 is connected to JACK transport control"),
1208 if (actively_recording()) {
1212 if (speed > 0.0 && _transport_frame == current_end_frame()) {
1216 if (speed < 0.0 && _transport_frame == 0) {
1222 /* if we are reversing relative to the current speed, or relative to the speed
1223 before the last stop, then we have to do extra work.
1226 PostTransportWork todo = PostTransportWork (0);
1228 if ((_transport_speed && speed * _transport_speed < 0.0) || (_last_transport_speed * speed < 0.0) || (_last_transport_speed == 0.0f && speed < 0.0f)) {
1229 todo = PostTransportWork (todo | PostTransportReverse);
1230 _last_roll_or_reversal_location = _transport_frame;
1233 _last_transport_speed = _transport_speed;
1234 _transport_speed = speed;
1237 _default_transport_speed = speed;
1240 boost::shared_ptr<RouteList> rl = routes.reader();
1241 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1242 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1243 if (tr && tr->realtime_set_speed (tr->speed(), true)) {
1244 todo = PostTransportWork (todo | PostTransportSpeed);
1249 add_post_transport_work (todo);
1250 _butler->schedule_transport_work ();
1253 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC3 with speed = %1\n", _transport_speed));
1254 TransportStateChange (); /* EMIT SIGNAL */
1259 /** Stop the transport. */
1261 Session::stop_transport (bool abort, bool clear_state)
1263 if (_transport_speed == 0.0f) {
1267 if (!get_transport_declick_required()) {
1269 /* stop has not yet been scheduled */
1271 boost::shared_ptr<RouteList> rl = routes.reader();
1272 framepos_t stop_target = audible_frame();
1274 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1275 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1277 tr->prepare_to_stop (_transport_frame, stop_target);
1283 if (actively_recording() && /* we are recording */
1284 worst_input_latency() > current_block_size) { /* input latency exceeds block size, so simple 1 cycle delay before stop is not enough */
1286 /* we need to capture the audio that is still somewhere in the pipeline between
1287 wherever it was generated and the process callback. This means that even though
1288 the user (or something else) has asked us to stop, we have to roll
1289 past this point and then reset the playhead/transport location to
1290 the position at which the stop was requested.
1292 we still need playback to "stop" now, however, which is why we schedule
1296 DEBUG_TRACE (DEBUG::Transport, string_compose ("stop transport requested @ %1, scheduled for + %2 = %3, abort = %4\n",
1297 _transport_frame, _worst_input_latency,
1298 _transport_frame + _worst_input_latency,
1301 SessionEvent *ev = new SessionEvent (SessionEvent::StopOnce, SessionEvent::Replace,
1302 _transport_frame + _worst_input_latency,
1307 /* request a declick at the start of the next process cycle() so that playback ceases.
1308 It will remain silent until we actually stop (at the StopOnce event somewhere in
1309 the future). The extra flag (StopPendingCapture) is set to ensure that check_declick_out()
1310 does not stop the transport too early.
1312 new_bits = SubState (PendingDeclickOut|StopPendingCapture);
1316 /* Not recording, schedule a declick in the next process() cycle and then stop at its end */
1318 new_bits = PendingDeclickOut;
1322 /* we'll be called again after the declick */
1323 transport_sub_state = SubState (transport_sub_state|new_bits);
1324 pending_abort = abort;
1330 /* declick was scheduled, but we've been called again, which means it is really time to stop
1332 XXX: we should probably split this off into its own method and call it explicitly.
1335 realtime_stop (abort, clear_state);
1336 _butler->schedule_transport_work ();
1340 /** Called from the process thread */
1342 Session::start_transport ()
1344 DEBUG_TRACE (DEBUG::Transport, "start_transport\n");
1346 _last_roll_location = _transport_frame;
1347 _last_roll_or_reversal_location = _transport_frame;
1349 have_looped = false;
1351 /* if record status is Enabled, move it to Recording. if its
1352 already Recording, move it to Disabled.
1355 switch (record_status()) {
1357 if (!config.get_punch_in()) {
1364 disable_record (false);
1372 transport_sub_state |= PendingDeclickIn;
1374 _transport_speed = _default_transport_speed;
1375 _target_transport_speed = _transport_speed;
1377 boost::shared_ptr<RouteList> rl = routes.reader();
1378 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1379 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1381 tr->realtime_set_speed (tr->speed(), true);
1385 if (!_engine.freewheeling()) {
1386 Timecode::Time time;
1387 timecode_time_subframes (_transport_frame, time);
1388 if (!dynamic_cast<MTC_Slave*>(_slave)) {
1389 send_immediate_mmc (MIDI::MachineControlCommand (MIDI::MachineControl::cmdDeferredPlay));
1393 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC4 with speed = %1\n", _transport_speed));
1394 TransportStateChange (); /* EMIT SIGNAL */
1397 /** Do any transport work in the audio thread that needs to be done after the
1398 * transport thread is finished. Audio thread, realtime safe.
1401 Session::post_transport ()
1403 PostTransportWork ptw = post_transport_work ();
1405 if (ptw & PostTransportAudition) {
1406 if (auditioner && auditioner->auditioning()) {
1407 process_function = &Session::process_audition;
1409 process_function = &Session::process_with_events;
1413 if (ptw & PostTransportStop) {
1415 transport_sub_state = 0;
1418 if (ptw & PostTransportLocate) {
1420 if (((!config.get_external_sync() && (auto_play_legal && config.get_auto_play())) && !_exporting) || (ptw & PostTransportRoll)) {
1423 transport_sub_state = 0;
1428 /* XXX is this really safe? shouldn't we just be unsetting the bits that we actually
1431 set_post_transport_work (PostTransportWork (0));
1435 Session::reset_rf_scale (framecnt_t motion)
1437 cumulative_rf_motion += motion;
1439 if (cumulative_rf_motion < 4 * _current_frame_rate) {
1441 } else if (cumulative_rf_motion < 8 * _current_frame_rate) {
1443 } else if (cumulative_rf_motion < 16 * _current_frame_rate) {
1455 Session::use_sync_source (Slave* new_slave)
1457 /* Runs in process() context */
1459 bool non_rt_required = false;
1461 /* XXX this deletion is problematic because we're in RT context */
1466 DEBUG_TRACE (DEBUG::Slave, string_compose ("set new slave to %1\n", _slave));
1468 // need to queue this for next process() cycle
1469 _send_timecode_update = true;
1471 boost::shared_ptr<RouteList> rl = routes.reader();
1472 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
1473 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
1474 if (tr && !tr->hidden()) {
1475 if (tr->realtime_set_speed (tr->speed(), true)) {
1476 non_rt_required = true;
1478 tr->set_slaved (_slave != 0);
1482 if (non_rt_required) {
1483 add_post_transport_work (PostTransportSpeed);
1484 _butler->schedule_transport_work ();
1491 Session::drop_sync_source ()
1493 request_sync_source (0);
1497 Session::switch_to_sync_source (SyncSource src)
1501 DEBUG_TRACE (DEBUG::Slave, string_compose ("Setting up sync source %1\n", enum_2_string (src)));
1505 if (_slave && dynamic_cast<MTC_Slave*>(_slave)) {
1510 new_slave = new MTC_Slave (*this, *_midi_ports->mtc_input_port());
1513 catch (failed_constructor& err) {
1519 if (_slave && dynamic_cast<LTC_Slave*>(_slave)) {
1524 new_slave = new LTC_Slave (*this);
1527 catch (failed_constructor& err) {
1534 if (_slave && dynamic_cast<MIDIClock_Slave*>(_slave)) {
1539 new_slave = new MIDIClock_Slave (*this, *_midi_ports->midi_clock_input_port(), 24);
1542 catch (failed_constructor& err) {
1548 if (_slave && dynamic_cast<Engine_Slave*>(_slave)) {
1552 if (config.get_video_pullup() != 0.0f) {
1556 new_slave = new Engine_Slave (*AudioEngine::instance());
1564 request_sync_source (new_slave);
1568 Session::set_track_speed (Track* track, double speed)
1570 if (track->realtime_set_speed (speed, false)) {
1571 add_post_transport_work (PostTransportSpeed);
1572 _butler->schedule_transport_work ();
1578 Session::unset_play_range ()
1580 _play_range = false;
1581 _clear_event_type (SessionEvent::RangeStop);
1582 _clear_event_type (SessionEvent::RangeLocate);
1586 Session::set_play_range (list<AudioRange>& range, bool leave_rolling)
1590 /* Called from event-processing context */
1592 unset_play_range ();
1594 if (range.empty()) {
1595 /* _play_range set to false in unset_play_range()
1597 if (!leave_rolling) {
1598 /* stop transport */
1599 SessionEvent* ev = new SessionEvent (SessionEvent::SetTransportSpeed, SessionEvent::Add, SessionEvent::Immediate, 0, 0.0f, false);
1607 /* cancel loop play */
1610 list<AudioRange>::size_type sz = range.size();
1614 list<AudioRange>::iterator i = range.begin();
1615 list<AudioRange>::iterator next;
1617 while (i != range.end()) {
1622 /* locating/stopping is subject to delays for declicking.
1625 framepos_t requested_frame = i->end;
1627 if (requested_frame > current_block_size) {
1628 requested_frame -= current_block_size;
1630 requested_frame = 0;
1633 if (next == range.end()) {
1634 ev = new SessionEvent (SessionEvent::RangeStop, SessionEvent::Add, requested_frame, 0, 0.0f);
1636 ev = new SessionEvent (SessionEvent::RangeLocate, SessionEvent::Add, requested_frame, (*next).start, 0.0f);
1644 } else if (sz == 1) {
1646 ev = new SessionEvent (SessionEvent::RangeStop, SessionEvent::Add, range.front().end, 0, 0.0f);
1651 /* save range so we can do auto-return etc. */
1653 current_audio_range = range;
1655 /* now start rolling at the right place */
1657 ev = new SessionEvent (SessionEvent::LocateRoll, SessionEvent::Add, SessionEvent::Immediate, range.front().start, 0.0f, false);
1660 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC5 with speed = %1\n", _transport_speed));
1661 TransportStateChange ();
1665 Session::request_bounded_roll (framepos_t start, framepos_t end)
1667 AudioRange ar (start, end, 0);
1668 list<AudioRange> lar;
1671 request_play_range (&lar, true);
1675 Session::set_requested_return_frame (framepos_t return_to)
1677 _requested_return_frame = return_to;
1681 Session::request_roll_at_and_return (framepos_t start, framepos_t return_to)
1683 SessionEvent *ev = new SessionEvent (SessionEvent::LocateRollLocate, SessionEvent::Add, SessionEvent::Immediate, return_to, 1.0);
1684 ev->target2_frame = start;
1689 Session::engine_halted ()
1693 /* there will be no more calls to process(), so
1694 we'd better clean up for ourselves, right now.
1696 but first, make sure the butler is out of
1701 g_atomic_int_set (&_butler->should_do_transport_work, 0);
1702 set_post_transport_work (PostTransportWork (0));
1706 realtime_stop (false, true);
1707 non_realtime_stop (false, 0, ignored);
1708 transport_sub_state = 0;
1710 DEBUG_TRACE (DEBUG::Transport, string_compose ("send TSC6 with speed = %1\n", _transport_speed));
1711 TransportStateChange (); /* EMIT SIGNAL */
1716 Session::xrun_recovery ()
1718 Xrun (_transport_frame); /* EMIT SIGNAL */
1720 if (Config->get_stop_recording_on_xrun() && actively_recording()) {
1722 /* it didn't actually halt, but we need
1723 to handle things in the same way.
1731 Session::route_processors_changed (RouteProcessorChange c)
1733 if (ignore_route_processor_changes) {
1737 if (c.type == RouteProcessorChange::MeterPointChange) {
1741 update_latency_compensation ();
1748 Session::allow_auto_play (bool yn)
1750 auto_play_legal = yn;
1754 Session::maybe_stop (framepos_t limit)
1756 if ((_transport_speed > 0.0f && _transport_frame >= limit) || (_transport_speed < 0.0f && _transport_frame == 0)) {
1757 if (synced_to_engine () && config.get_jack_time_master ()) {
1758 _engine.transport_stop ();
1759 } else if (!synced_to_engine ()) {
1768 Session::send_mmc_locate (framepos_t t)
1774 if (!_engine.freewheeling()) {
1775 Timecode::Time time;
1776 timecode_time_subframes (t, time);
1777 send_immediate_mmc (MIDI::MachineControlCommand (time));
1781 /** Ask the transport to not send timecode until further notice. The suspension
1782 * will come into effect some finite time after this call, and timecode_transmission_suspended()
1783 * should be checked by the caller to find out when.
1786 Session::request_suspend_timecode_transmission ()
1788 SessionEvent* ev = new SessionEvent (SessionEvent::SetTimecodeTransmission, SessionEvent::Add, SessionEvent::Immediate, 0, 0, false);
1793 Session::request_resume_timecode_transmission ()
1795 SessionEvent* ev = new SessionEvent (SessionEvent::SetTimecodeTransmission, SessionEvent::Add, SessionEvent::Immediate, 0, 0, true);
1800 Session::timecode_transmission_suspended () const
1802 return g_atomic_int_get (&_suspend_timecode_transmission) == 1;