2 Copyright (C) 2000 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.
20 #ifndef __ardour_session_h__
21 #define __ardour_session_h__
23 #include "libardour-config.h"
32 #include <boost/dynamic_bitset.hpp>
33 #include <boost/scoped_ptr.hpp>
34 #include <boost/weak_ptr.hpp>
35 #include <boost/utility.hpp>
37 #include <glibmm/thread.h>
39 #include "pbd/error.h"
40 #include "pbd/event_loop.h"
42 #include "pbd/statefuldestructible.h"
43 #include "pbd/signals.h"
46 #include "evoral/types.hpp"
48 #include "midi++/types.h"
50 #include "timecode/time.h"
52 #include "ardour/ardour.h"
53 #include "ardour/chan_count.h"
54 #include "ardour/delivery.h"
55 #include "ardour/rc_configuration.h"
56 #include "ardour/session_configuration.h"
57 #include "ardour/session_event.h"
58 #include "ardour/location.h"
59 #include "ardour/interpolation.h"
60 #include "ardour/route_graph.h"
62 #ifdef HAVE_JACK_SESSION
63 #include <jack/session.h>
69 typedef struct _AEffect AEffect;
79 class ControllableDescriptor;
90 class AudioFileSource;
108 class MidiClockTicker;
113 class NamedSelection;
126 class SessionDirectory;
127 class SessionMetadata;
128 class SessionPlaylists;
134 class WindowsVSTPlugin;
136 extern void setup_enum_writer ();
138 class Session : public PBD::StatefulDestructible, public PBD::ScopedConnectionList, public SessionEventManager
147 /* a new session might have non-empty mix_template, an existing session should always have an empty one.
148 the bus profile can be null if no master out bus is required.
151 Session (AudioEngine&,
152 const std::string& fullpath,
153 const std::string& snapshot_name,
154 BusProfile* bus_profile = 0,
155 std::string mix_template = "");
159 std::string path() const { return _path; }
160 std::string name() const { return _name; }
161 std::string snap_name() const { return _current_snapshot_name; }
162 std::string raid_path () const;
163 bool path_is_within_session (const std::string&);
165 void set_snap_name ();
167 bool writable() const { return _writable; }
170 bool dirty() const { return _state_of_the_state & Dirty; }
171 void set_deletion_in_progress ();
172 void clear_deletion_in_progress ();
173 bool deletion_in_progress() const { return _state_of_the_state & Deletion; }
174 PBD::Signal0<void> DirtyChanged;
176 const SessionDirectory& session_directory () const { return *(_session_dir.get()); }
178 static PBD::Signal0<void> AutoBindingOn;
179 static PBD::Signal0<void> AutoBindingOff;
181 static PBD::Signal1<void,std::string> Dialog;
183 int ensure_subdirs ();
185 std::string automation_dir () const; ///< Automation data
186 std::string analysis_dir () const; ///< Analysis data
187 std::string plugins_dir () const; ///< Plugin state
188 std::string externals_dir () const; ///< Links to external files
190 std::string peak_path (std::string) const;
192 std::string change_source_path_by_name (std::string oldpath, std::string oldname, std::string newname, bool destructive);
194 std::string peak_path_from_audio_path (std::string) const;
195 std::string new_audio_source_name (const std::string&, uint32_t nchans, uint32_t chan, bool destructive);
196 std::string new_midi_source_name (const std::string&);
197 std::string new_source_path_from_name (DataType type, const std::string&);
198 RouteList new_route_from_template (uint32_t how_many, const std::string& template_path);
200 void process (pframes_t nframes);
202 BufferSet& get_silent_buffers (ChanCount count = ChanCount::ZERO);
203 BufferSet& get_scratch_buffers (ChanCount count = ChanCount::ZERO);
204 BufferSet& get_mix_buffers (ChanCount count = ChanCount::ZERO);
206 bool have_rec_enabled_track () const;
208 bool have_captured() const { return _have_captured; }
210 void refill_all_track_buffers ();
211 Butler* butler() { return _butler; }
212 void butler_transport_work ();
214 void refresh_disk_space ();
216 int load_diskstreams_2X (XMLNode const &, int);
218 int load_routes (const XMLNode&, int);
219 boost::shared_ptr<RouteList> get_routes() const {
220 return routes.reader ();
223 boost::shared_ptr<RouteList> get_routes_with_internal_returns() const;
225 boost::shared_ptr<RouteList> get_routes_with_regions_at (framepos_t const) const;
227 uint32_t nroutes() const { return routes.reader()->size(); }
228 uint32_t ntracks () const;
229 uint32_t nbusses () const;
231 boost::shared_ptr<BundleList> bundles () {
232 return _bundles.reader ();
235 struct RoutePublicOrderSorter {
236 bool operator() (boost::shared_ptr<Route>, boost::shared_ptr<Route> b);
239 void sync_order_keys (std::string const &);
241 template<class T> void foreach_route (T *obj, void (T::*func)(Route&));
242 template<class T> void foreach_route (T *obj, void (T::*func)(boost::shared_ptr<Route>));
243 template<class T, class A> void foreach_route (T *obj, void (T::*func)(Route&, A), A arg);
245 static char session_name_is_legal (const std::string&);
246 bool io_name_is_legal (const std::string&);
247 boost::shared_ptr<Route> route_by_name (std::string);
248 boost::shared_ptr<Route> route_by_id (PBD::ID);
249 boost::shared_ptr<Route> route_by_remote_id (uint32_t id);
250 boost::shared_ptr<Track> track_by_diskstream_id (PBD::ID);
251 void routes_using_input_from (const std::string& str, RouteList& rl);
253 bool route_name_unique (std::string) const;
254 bool route_name_internal (std::string) const;
256 bool get_record_enabled() const {
257 return (record_status () >= Enabled);
260 RecordState record_status() const {
261 return (RecordState) g_atomic_int_get (&_record_status);
264 bool actively_recording () const {
265 return record_status() == Recording;
268 bool record_enabling_legal () const;
269 void maybe_enable_record ();
270 void disable_record (bool rt_context, bool force = false);
271 void step_back_from_record ();
273 void maybe_write_autosave ();
275 /* Emitted when all i/o connections are complete */
277 PBD::Signal0<void> IOConnectionsComplete;
279 /* Record status signals */
281 PBD::Signal0<void> RecordStateChanged;
283 /* Transport mechanism signals */
285 /** Emitted on the following changes in transport state:
286 * - stop (from the butler thread)
287 * - change in whether or not we are looping (from the process thread)
288 * - change in the play range (from the process thread)
289 * - start (from the process thread)
292 PBD::Signal0<void> TransportStateChange;
294 PBD::Signal1<void,framepos_t> PositionChanged; /* sent after any non-sequential motion */
295 PBD::Signal1<void,framepos_t> Xrun;
296 PBD::Signal0<void> TransportLooped;
298 /** emitted when a locate has occurred */
299 PBD::Signal0<void> Located;
301 PBD::Signal1<void,RouteList&> RouteAdded;
302 /** Emitted when a property of one of our route groups changes.
303 * The parameter is the RouteGroup that has changed.
305 PBD::Signal1<void, RouteGroup *> RouteGroupPropertyChanged;
306 /** Emitted when a route is added to one of our route groups.
307 * First parameter is the RouteGroup, second is the route.
309 PBD::Signal2<void, RouteGroup *, boost::weak_ptr<Route> > RouteAddedToRouteGroup;
310 /** Emitted when a route is removed from one of our route groups.
311 * First parameter is the RouteGroup, second is the route.
313 PBD::Signal2<void, RouteGroup *, boost::weak_ptr<Route> > RouteRemovedFromRouteGroup;
315 /* Step Editing status changed */
316 PBD::Signal1<void,bool> StepEditStatusChange;
318 void queue_event (SessionEvent*);
320 void request_roll_at_and_return (framepos_t start, framepos_t return_to);
321 void request_bounded_roll (framepos_t start, framepos_t end);
322 void request_stop (bool abort = false, bool clear_state = false);
323 void request_locate (framepos_t frame, bool with_roll = false);
325 void request_play_loop (bool yn, bool leave_rolling = false);
326 bool get_play_loop () const { return play_loop; }
328 framepos_t last_transport_start () const { return _last_roll_location; }
331 void use_rf_shuttle_speed ();
332 void allow_auto_play (bool yn);
333 void request_transport_speed (double speed);
334 void request_transport_speed_nonzero (double);
335 void request_overwrite_buffer (Track *);
336 void adjust_playback_buffering();
337 void adjust_capture_buffering();
338 void request_track_speed (Track *, double speed);
339 void request_input_change_handling ();
341 bool locate_pending() const { return static_cast<bool>(post_transport_work()&PostTransportLocate); }
342 bool transport_locked () const;
346 framepos_t current_end_frame () const;
347 framepos_t current_start_frame () const;
348 /** "actual" sample rate of session, set by current audioengine rate, pullup/down etc. */
349 framecnt_t frame_rate () const { return _current_frame_rate; }
350 /** "native" sample rate of session, regardless of current audioengine rate, pullup/down etc */
351 framecnt_t nominal_frame_rate () const { return _nominal_frame_rate; }
352 framecnt_t frames_per_hour () const { return _frames_per_hour; }
354 double frames_per_timecode_frame() const { return _frames_per_timecode_frame; }
355 framecnt_t timecode_frames_per_hour() const { return _timecode_frames_per_hour; }
357 MIDI::byte get_mtc_timecode_bits() const {
358 return mtc_timecode_bits; /* encoding of SMTPE type for MTC */
361 float timecode_frames_per_second() const;
362 bool timecode_drop_frames() const;
366 Locations *locations() { return _locations; }
368 PBD::Signal1<void,Location*> auto_loop_location_changed;
369 PBD::Signal1<void,Location*> auto_punch_location_changed;
370 PBD::Signal0<void> locations_modified;
372 void set_auto_punch_location (Location *);
373 void set_auto_loop_location (Location *);
374 int location_name(std::string& result, std::string base = std::string(""));
376 pframes_t get_block_size() const { return current_block_size; }
377 framecnt_t worst_output_latency () const { return _worst_output_latency; }
378 framecnt_t worst_input_latency () const { return _worst_input_latency; }
379 framecnt_t worst_track_latency () const { return _worst_track_latency; }
380 framecnt_t worst_playback_latency () const { return _worst_output_latency + _worst_track_latency; }
382 #ifdef HAVE_JACK_SESSION
383 void jack_session_event (jack_session_event_t* event);
385 int save_state (std::string snapshot_name, bool pending = false, bool switch_to_snapshot = false);
386 int restore_state (std::string snapshot_name);
387 int save_template (std::string template_name);
388 int save_history (std::string snapshot_name = "");
389 int restore_history (std::string snapshot_name);
390 void remove_state (std::string snapshot_name);
391 void rename_state (std::string old_name, std::string new_name);
392 void remove_pending_capture_state ();
393 int rename (const std::string&);
395 PBD::Signal1<void,std::string> StateSaved;
396 PBD::Signal0<void> StateReady;
398 std::vector<std::string*>* possible_states() const;
399 static std::vector<std::string*>* possible_states (std::string path);
401 XMLNode& get_state();
402 int set_state(const XMLNode& node, int version); // not idempotent
403 XMLNode& get_template();
405 /// The instant xml file is written to the session directory
406 void add_instant_xml (XMLNode&, bool write_to_config = true);
407 XMLNode* instant_xml (const std::string& str);
409 enum StateOfTheState {
414 InitialConnecting = 0x8,
419 StateOfTheState state_of_the_state() const { return _state_of_the_state; }
421 void add_route_group (RouteGroup *);
422 void remove_route_group (RouteGroup&);
423 void reorder_route_groups (std::list<RouteGroup*>);
425 RouteGroup* route_group_by_name (std::string);
426 RouteGroup& all_route_group() const;
428 PBD::Signal1<void,RouteGroup*> route_group_added;
429 PBD::Signal0<void> route_group_removed;
430 PBD::Signal0<void> route_groups_reordered;
432 void foreach_route_group (boost::function<void(RouteGroup*)> f) {
433 for (std::list<RouteGroup *>::iterator i = _route_groups.begin(); i != _route_groups.end(); ++i) {
438 std::list<RouteGroup*> const & route_groups () const {
439 return _route_groups;
442 /* fundamental operations. duh. */
444 std::list<boost::shared_ptr<AudioTrack> > new_audio_track (
447 TrackMode mode = Normal,
448 RouteGroup* route_group = 0,
449 uint32_t how_many = 1,
450 std::string name_template = ""
453 RouteList new_audio_route (
454 int input_channels, int output_channels, RouteGroup* route_group, uint32_t how_many, std::string name_template = ""
457 std::list<boost::shared_ptr<MidiTrack> > new_midi_track (
458 TrackMode mode = Normal, RouteGroup* route_group = 0, uint32_t how_many = 1, std::string name_template = ""
461 void remove_route (boost::shared_ptr<Route>);
462 void resort_routes ();
463 void resort_routes_using (boost::shared_ptr<RouteList>);
465 void set_remote_control_ids();
467 AudioEngine & engine() { return _engine; }
468 AudioEngine const & engine () const { return _engine; }
472 framepos_t transport_frame () const {return _transport_frame; }
473 framepos_t audible_frame () const;
474 framepos_t requested_return_frame() const { return _requested_return_frame; }
488 void sync_time_vars();
490 void bbt_time (framepos_t when, Timecode::BBT_Time&);
491 void timecode_to_sample(Timecode::Time& timecode, framepos_t& sample, bool use_offset, bool use_subframes) const;
492 void sample_to_timecode(framepos_t sample, Timecode::Time& timecode, bool use_offset, bool use_subframes) const;
493 void timecode_time (Timecode::Time &);
494 void timecode_time (framepos_t when, Timecode::Time&);
495 void timecode_time_subframes (framepos_t when, Timecode::Time&);
497 void timecode_duration (framecnt_t, Timecode::Time&) const;
498 void timecode_duration_string (char *, framecnt_t) const;
500 framecnt_t convert_to_frames (AnyTime const & position);
501 framecnt_t any_duration_to_frames (framepos_t position, AnyTime const & duration);
503 static PBD::Signal1<void, framepos_t> StartTimeChanged;
504 static PBD::Signal1<void, framepos_t> EndTimeChanged;
506 std::vector<SyncSource> get_available_sync_options() const;
507 void request_sync_source (Slave*);
508 bool synced_to_jack() const { return config.get_external_sync() && config.get_sync_source() == JACK; }
510 double transport_speed() const { return _transport_speed; }
511 bool transport_stopped() const { return _transport_speed == 0.0f; }
512 bool transport_rolling() const { return _transport_speed != 0.0f; }
514 void set_silent (bool yn);
515 bool silent () { return _silent; }
517 TempoMap& tempo_map() { return *_tempo_map; }
521 boost::shared_ptr<Region> find_whole_file_parent (boost::shared_ptr<Region const>) const;
523 std::string path_from_region_name (DataType type, std::string name, std::string identifier);
525 boost::shared_ptr<Region> XMLRegionFactory (const XMLNode&, bool full);
526 boost::shared_ptr<AudioRegion> XMLAudioRegionFactory (const XMLNode&, bool full);
527 boost::shared_ptr<MidiRegion> XMLMidiRegionFactory (const XMLNode&, bool full);
529 /* source management */
531 void import_audiofiles (ImportStatus&);
532 bool sample_rate_convert (ImportStatus&, std::string infile, std::string& outfile);
533 std::string build_tmp_convert_name (std::string file);
535 boost::shared_ptr<ExportHandler> get_export_handler ();
536 boost::shared_ptr<ExportStatus> get_export_status ();
538 int start_audio_export (framepos_t position, bool realtime);
540 PBD::Signal1<int, framecnt_t> ProcessExport;
541 static PBD::Signal2<void,std::string, std::string> Exported;
543 void add_source (boost::shared_ptr<Source>);
544 void remove_source (boost::weak_ptr<Source>);
546 void cleanup_regions();
547 int cleanup_sources (CleanupReport&);
548 int cleanup_trash_sources (CleanupReport&);
550 int destroy_sources (std::list<boost::shared_ptr<Source> >);
552 int remove_last_capture ();
554 /** handlers should return -1 for "stop cleanup",
555 0 for "yes, delete this playlist",
556 1 for "no, don't delete this playlist".
558 static PBD::Signal1<int,boost::shared_ptr<Playlist> > AskAboutPlaylistDeletion;
560 /** handlers should return 0 for "ignore the rate mismatch",
561 !0 for "do not use this session"
563 static PBD::Signal2<int, framecnt_t, framecnt_t> AskAboutSampleRateMismatch;
565 /** handlers should return !0 for use pending state, 0 for ignore it.
567 static PBD::Signal0<int> AskAboutPendingState;
569 boost::shared_ptr<AudioFileSource> create_audio_source_for_session (
570 size_t, std::string const &, uint32_t, bool destructive);
572 boost::shared_ptr<MidiSource> create_midi_source_for_session (
573 Track*, std::string const &);
575 boost::shared_ptr<Source> source_by_id (const PBD::ID&);
576 boost::shared_ptr<Source> source_by_path_and_channel (const std::string&, uint16_t);
577 uint32_t count_sources_by_origin (const std::string&);
579 void add_playlist (boost::shared_ptr<Playlist>, bool unused = false);
581 /* named selections */
583 boost::shared_ptr<NamedSelection> named_selection_by_name (std::string name);
584 void add_named_selection (boost::shared_ptr<NamedSelection>);
585 void remove_named_selection (boost::shared_ptr<NamedSelection>);
587 template<class T> void foreach_named_selection (T& obj, void (T::*func)(boost::shared_ptr<NamedSelection>));
588 PBD::Signal0<void> NamedSelectionAdded;
589 PBD::Signal0<void> NamedSelectionRemoved;
591 /* Curves and AutomationLists (TODO when they go away) */
592 void add_automation_list(AutomationList*);
596 boost::shared_ptr<Auditioner> the_auditioner() { return auditioner; }
597 void audition_playlist ();
598 void audition_region (boost::shared_ptr<Region>);
599 void cancel_audition ();
600 bool is_auditioning () const;
602 PBD::Signal1<void,bool> AuditionActive;
604 /* flattening stuff */
606 boost::shared_ptr<Region> write_one_track (AudioTrack&, framepos_t start, framepos_t end,
607 bool overwrite, std::vector<boost::shared_ptr<Source> >&, InterThreadInfo& wot,
608 bool enable_processing = true);
609 int freeze_all (InterThreadInfo&);
611 /* session-wide solo/mute/rec-enable */
613 bool soloing() const { return _non_soloed_outs_muted; }
614 bool listening() const { return _listen_cnt > 0; }
615 bool solo_isolated() const { return _solo_isolated_cnt > 0; }
617 static const SessionEvent::RTeventCallback rt_cleanup;
619 void set_solo (boost::shared_ptr<RouteList>, bool, SessionEvent::RTeventCallback after = rt_cleanup, bool group_override = false);
620 void set_just_one_solo (boost::shared_ptr<Route>, bool, SessionEvent::RTeventCallback after = rt_cleanup);
621 void cancel_solo_after_disconnect (boost::shared_ptr<Route>, bool upstream, SessionEvent::RTeventCallback after = rt_cleanup);
622 void set_mute (boost::shared_ptr<RouteList>, bool, SessionEvent::RTeventCallback after = rt_cleanup, bool group_override = false);
623 void set_listen (boost::shared_ptr<RouteList>, bool, SessionEvent::RTeventCallback after = rt_cleanup, bool group_override = false);
624 void set_record_enabled (boost::shared_ptr<RouteList>, bool, SessionEvent::RTeventCallback after = rt_cleanup, bool group_override = false);
625 void set_solo_isolated (boost::shared_ptr<RouteList>, bool, SessionEvent::RTeventCallback after = rt_cleanup, bool group_override = false);
626 void set_exclusive_input_active (boost::shared_ptr<Route> rt, bool others_on);
627 void set_monitoring (boost::shared_ptr<RouteList>, MonitorChoice, SessionEvent::RTeventCallback after = rt_cleanup, bool group_override = false);
629 PBD::Signal1<void,bool> SoloActive;
630 PBD::Signal0<void> SoloChanged;
631 PBD::Signal0<void> IsolatedChanged;
633 /* monitor/master out */
635 void add_monitor_section ();
636 void remove_monitor_section ();
638 boost::shared_ptr<Route> monitor_out() const { return _monitor_out; }
639 boost::shared_ptr<Route> master_out() const { return _master_out; }
641 void globally_add_internal_sends (boost::shared_ptr<Route> dest, Placement p, bool);
642 void globally_set_send_gains_from_track (boost::shared_ptr<Route> dest);
643 void globally_set_send_gains_to_zero (boost::shared_ptr<Route> dest);
644 void globally_set_send_gains_to_unity (boost::shared_ptr<Route> dest);
645 void add_internal_sends (boost::shared_ptr<Route> dest, Placement p, boost::shared_ptr<RouteList> senders);
647 static void set_disable_all_loaded_plugins (bool yn) {
648 _disable_all_loaded_plugins = yn;
650 static bool get_disable_all_loaded_plugins() {
651 return _disable_all_loaded_plugins;
654 uint32_t next_send_id();
655 uint32_t next_aux_send_id();
656 uint32_t next_return_id();
657 uint32_t next_insert_id();
658 void mark_send_id (uint32_t);
659 void mark_aux_send_id (uint32_t);
660 void mark_return_id (uint32_t);
661 void mark_insert_id (uint32_t);
662 void unmark_send_id (uint32_t);
663 void unmark_aux_send_id (uint32_t);
664 void unmark_return_id (uint32_t);
665 void unmark_insert_id (uint32_t);
667 /* s/w "RAID" management */
669 framecnt_t available_capture_duration();
673 void add_bundle (boost::shared_ptr<Bundle>);
674 void remove_bundle (boost::shared_ptr<Bundle>);
675 boost::shared_ptr<Bundle> bundle_by_name (std::string) const;
677 PBD::Signal1<void,boost::shared_ptr<Bundle> > BundleAdded;
678 PBD::Signal1<void,boost::shared_ptr<Bundle> > BundleRemoved;
682 /* History (for editors, mixers, UIs etc.) */
684 /** Undo some transactions.
685 * @param n Number of transactions to undo.
687 void undo (uint32_t n) {
691 void redo (uint32_t n) {
695 UndoHistory& history() { return _history; }
697 uint32_t undo_depth() const { return _history.undo_depth(); }
698 uint32_t redo_depth() const { return _history.redo_depth(); }
699 std::string next_undo() const { return _history.next_undo(); }
700 std::string next_redo() const { return _history.next_redo(); }
702 void begin_reversible_command (const std::string& cmd_name);
703 void begin_reversible_command (GQuark);
704 void commit_reversible_command (Command* cmd = 0);
706 void add_command (Command *const cmd) {
707 assert (_current_trans);
708 _current_trans->add_command (cmd);
711 /** @return The list of operations that are currently in progress */
712 std::list<GQuark> const & current_operations () {
713 return _current_trans_quarks;
716 void add_commands (std::vector<Command*> const & cmds);
718 std::map<PBD::ID,PBD::StatefulDestructible*> registry;
720 // these commands are implemented in libs/ardour/session_command.cc
721 Command* memento_command_factory(XMLNode* n);
722 Command* stateful_diff_command_factory (XMLNode *);
723 void register_with_memento_command_factory(PBD::ID, PBD::StatefulDestructible*);
727 boost::shared_ptr<IO> click_io() { return _click_io; }
728 boost::shared_ptr<Amp> click_gain() { return _click_gain; }
730 /* disk, buffer loads */
732 uint32_t playback_load ();
733 uint32_t capture_load ();
737 void request_play_range (std::list<AudioRange>*, bool leave_rolling = false);
738 bool get_play_range () const { return _play_range; }
740 /* buffers for gain and pan */
742 gain_t* gain_automation_buffer () const;
743 pan_t** pan_automation_buffer () const;
745 void ensure_buffer_set (BufferSet& buffers, const ChanCount& howmany);
749 static intptr_t vst_callback (
758 static PBD::Signal0<void> SendFeedback;
762 boost::shared_ptr<Speakers> get_speakers ();
766 boost::shared_ptr<PBD::Controllable> controllable_by_id (const PBD::ID&);
767 boost::shared_ptr<PBD::Controllable> controllable_by_descriptor (const PBD::ControllableDescriptor&);
769 void add_controllable (boost::shared_ptr<PBD::Controllable>);
770 void remove_controllable (PBD::Controllable*);
772 boost::shared_ptr<PBD::Controllable> solo_cut_control() const;
774 SessionMetadata & metadata () { return *_metadata; }
776 SessionConfiguration config;
778 bool exporting () const {
782 /* this is a private enum, but setup_enum_writer() needs it,
783 and i can't find a way to give that function
787 enum PostTransportWork {
788 PostTransportStop = 0x1,
789 PostTransportDuration = 0x2,
790 PostTransportLocate = 0x4,
791 PostTransportRoll = 0x8,
792 PostTransportAbort = 0x10,
793 PostTransportOverWrite = 0x20,
794 PostTransportSpeed = 0x40,
795 PostTransportAudition = 0x80,
796 PostTransportReverse = 0x100,
797 PostTransportInputChange = 0x200,
798 PostTransportCurveRealloc = 0x400,
799 PostTransportClearSubstate = 0x800,
800 PostTransportAdjustPlaybackBuffering = 0x1000,
801 PostTransportAdjustCaptureBuffering = 0x2000
810 SlaveState slave_state() const { return _slave_state; }
812 boost::shared_ptr<SessionPlaylists> playlists;
814 void send_mmc_locate (framepos_t);
815 int send_full_time_code (framepos_t);
817 PBD::Signal0<void> RouteOrderKeyChanged;
819 bool step_editing() const { return (_step_editors > 0); }
821 void request_suspend_timecode_transmission ();
822 void request_resume_timecode_transmission ();
823 bool timecode_transmission_suspended () const;
825 std::string source_search_path(DataType) const;
826 void ensure_search_path_includes (const std::string& path, DataType type);
828 std::list<std::string> unknown_processors () const;
830 /** Emitted when a feedback cycle has been detected within Ardour's signal
831 processing path. Until it is fixed (by the user) some (unspecified)
832 routes will not be run.
834 static PBD::Signal0<void> FeedbackDetected;
836 /** Emitted when a graph sort has successfully completed, which means
837 that it has no feedback cycles.
839 static PBD::Signal0<void> SuccessfulGraphSort;
841 /* handlers can return an integer value:
842 0: config.set_audio_search_path() or config.set_midi_search_path() was used
843 to modify the search path and we should try to find it again.
844 1: quit entire session load
845 2: as 0, but don't ask about other missing files
846 3: don't ask about other missing files, and just mark this one missing
847 -1: just mark this one missing
848 any other value: as -1
850 static PBD::Signal3<int,Session*,std::string,DataType> MissingFile;
852 /** Emitted when the session wants Ardour to quit */
853 static PBD::Signal0<void> Quit;
856 friend class AudioEngine;
857 void set_block_size (pframes_t nframes);
858 void set_frame_rate (framecnt_t nframes);
862 void schedule_curve_reallocation ();
863 void update_latency_compensation (bool force = false);
866 int create (const std::string& mix_template, BusProfile*);
870 PendingDeclickIn = 0x1,
871 PendingDeclickOut = 0x2,
872 StopPendingCapture = 0x4,
873 PendingLocate = 0x20,
876 /* stuff used in process() should be close together to
880 typedef void (Session::*process_function_type)(pframes_t);
882 AudioEngine& _engine;
883 mutable gint processing_prohibited;
884 process_function_type process_function;
885 process_function_type last_process_function;
886 bool waiting_for_sync_offset;
887 framecnt_t _base_frame_rate;
888 framecnt_t _current_frame_rate; //this includes video pullup offset
889 framecnt_t _nominal_frame_rate; //ignores audioengine setting, "native" SR
890 int transport_sub_state;
891 mutable gint _record_status;
892 framepos_t _transport_frame;
893 Location* _session_range_location; ///< session range, or 0 if there is nothing in the session yet
897 void maybe_update_session_range (framepos_t, framepos_t);
899 // varispeed playback
900 double _transport_speed;
901 double _last_transport_speed;
902 double _target_transport_speed;
903 CubicInterpolation interpolation;
905 bool auto_play_legal;
906 framepos_t _last_slave_transport_frame;
907 framecnt_t maximum_output_latency;
908 framepos_t _requested_return_frame;
909 pframes_t current_block_size;
910 framecnt_t _worst_output_latency;
911 framecnt_t _worst_input_latency;
912 framecnt_t _worst_track_latency;
915 float _meter_falloff;
916 bool _non_soloed_outs_muted;
917 uint32_t _listen_cnt;
918 uint32_t _solo_isolated_cnt;
922 void initialize_latencies ();
923 void set_worst_io_latencies ();
924 void set_worst_playback_latency ();
925 void set_worst_capture_latency ();
926 void set_worst_io_latencies_x (IOChange, void *) {
927 set_worst_io_latencies ();
929 void post_capture_latency ();
930 void post_playback_latency ();
932 void update_latency_compensation_proxy (void* ignored);
934 void ensure_buffers (ChanCount howmany = ChanCount::ZERO);
936 void process_scrub (pframes_t);
937 void process_without_events (pframes_t);
938 void process_with_events (pframes_t);
939 void process_audition (pframes_t);
940 void process_export (pframes_t);
941 int process_export_fw (pframes_t);
943 void block_processing() { g_atomic_int_set (&processing_prohibited, 1); }
944 void unblock_processing() { g_atomic_int_set (&processing_prohibited, 0); }
945 bool processing_blocked() const { return g_atomic_int_get (&processing_prohibited); }
949 static const int delta_accumulator_size = 25;
950 int delta_accumulator_cnt;
951 int32_t delta_accumulator[delta_accumulator_size];
952 int32_t average_slave_delta;
954 bool have_first_delta_accumulator;
956 SlaveState _slave_state;
957 framepos_t slave_wait_end;
959 void reset_slave_state ();
960 bool follow_slave (pframes_t);
961 void calculate_moving_average_of_slave_delta (int dir, framecnt_t this_delta);
962 void track_slave_state (float slave_speed, framepos_t slave_transport_frame, framecnt_t this_delta);
963 void follow_slave_silently (pframes_t nframes, float slave_speed);
965 void switch_to_sync_source (SyncSource); /* !RT context */
966 void drop_sync_source (); /* !RT context */
967 void use_sync_source (Slave*); /* RT context */
969 bool post_export_sync;
970 framepos_t post_export_position;
973 bool _export_rolling;
975 boost::shared_ptr<ExportHandler> export_handler;
976 boost::shared_ptr<ExportStatus> export_status;
979 int stop_audio_export ();
980 void finalize_audio_export ();
982 PBD::ScopedConnection export_freewheel_connection;
984 void get_track_statistics ();
985 int process_routes (pframes_t, bool& need_butler);
986 int silent_process_routes (pframes_t, bool& need_butler);
988 int get_transport_declick_required () {
989 if (transport_sub_state & PendingDeclickIn) {
990 transport_sub_state &= ~PendingDeclickIn;
992 } else if (transport_sub_state & PendingDeclickOut) {
999 bool maybe_stop (framepos_t limit);
1000 bool maybe_sync_start (pframes_t &);
1002 void check_declick_out ();
1008 /** Number of process frames since the last MTC output (when sending MTC); used to
1009 * know when to send full MTC messages every so often.
1011 pframes_t _pframes_since_last_mtc;
1012 bool session_midi_feedback;
1015 framepos_t last_loopend;
1017 boost::scoped_ptr<SessionDirectory> _session_dir;
1020 void when_engine_running ();
1021 void graph_reordered ();
1023 /** current snapshot name, without the .ardour suffix */
1024 std::string _current_snapshot_name;
1026 XMLTree* state_tree;
1027 bool state_was_pending;
1028 StateOfTheState _state_of_the_state;
1031 int load_options (const XMLNode&);
1032 int load_state (std::string snapshot_name);
1034 framepos_t _last_roll_location;
1035 framepos_t _last_roll_or_reversal_location;
1036 framepos_t _last_record_location;
1038 bool pending_locate_roll;
1039 framepos_t pending_locate_frame;
1040 bool pending_locate_flush;
1042 bool pending_auto_loop;
1046 static const PostTransportWork ProcessCannotProceedMask =
1048 PostTransportInputChange|
1050 PostTransportReverse|
1051 PostTransportCurveRealloc|
1052 PostTransportAudition|
1053 PostTransportLocate|
1055 PostTransportClearSubstate);
1057 gint _post_transport_work; /* accessed only atomic ops */
1058 PostTransportWork post_transport_work() const { return (PostTransportWork) g_atomic_int_get (&_post_transport_work); }
1059 void set_post_transport_work (PostTransportWork ptw) { g_atomic_int_set (&_post_transport_work, (gint) ptw); }
1060 void add_post_transport_work (PostTransportWork ptw);
1062 void schedule_playback_buffering_adjustment ();
1063 void schedule_capture_buffering_adjustment ();
1065 uint32_t cumulative_rf_motion;
1068 void set_rf_speed (float speed);
1069 void reset_rf_scale (framecnt_t frames_moved);
1071 Locations* _locations;
1072 void locations_changed ();
1073 void locations_added (Location*);
1074 void handle_locations_changed (Locations::LocationList&);
1076 PBD::ScopedConnectionList punch_connections;
1077 void auto_punch_start_changed (Location *);
1078 void auto_punch_end_changed (Location *);
1079 void auto_punch_changed (Location *);
1081 PBD::ScopedConnectionList loop_connections;
1082 void auto_loop_changed (Location *);
1084 void first_stage_init (std::string path, std::string snapshot_name);
1085 int second_stage_init ();
1086 void remove_empty_sounds ();
1088 void setup_midi_control ();
1089 int midi_read (MIDI::Port *);
1091 void enable_record ();
1093 void increment_transport_position (framecnt_t val) {
1094 if (max_framepos - val < _transport_frame) {
1095 _transport_frame = max_framepos;
1097 _transport_frame += val;
1101 void decrement_transport_position (framecnt_t val) {
1102 if (val < _transport_frame) {
1103 _transport_frame -= val;
1105 _transport_frame = 0;
1109 void post_transport_motion ();
1110 static void *session_loader_thread (void *arg);
1114 /* SessionEventManager interface */
1116 void process_event (SessionEvent*);
1117 void set_next_event ();
1118 void cleanup_event (SessionEvent*,int);
1120 /* MIDI Machine Control */
1122 void spp_start (MIDI::Parser&, framepos_t timestamp);
1123 void spp_continue (MIDI::Parser&, framepos_t timestamp);
1124 void spp_stop (MIDI::Parser&, framepos_t timestamp);
1126 void mmc_deferred_play (MIDI::MachineControl &);
1127 void mmc_stop (MIDI::MachineControl &);
1128 void mmc_step (MIDI::MachineControl &, int);
1129 void mmc_pause (MIDI::MachineControl &);
1130 void mmc_record_pause (MIDI::MachineControl &);
1131 void mmc_record_strobe (MIDI::MachineControl &);
1132 void mmc_record_exit (MIDI::MachineControl &);
1133 void mmc_track_record_status (MIDI::MachineControl &, uint32_t track, bool enabled);
1134 void mmc_fast_forward (MIDI::MachineControl &);
1135 void mmc_rewind (MIDI::MachineControl &);
1136 void mmc_locate (MIDI::MachineControl &, const MIDI::byte *);
1137 void mmc_shuttle (MIDI::MachineControl &mmc, float speed, bool forw);
1138 void mmc_record_enable (MIDI::MachineControl &mmc, size_t track, bool enabled);
1140 struct timeval last_mmc_step;
1143 typedef boost::function<bool()> MidiTimeoutCallback;
1144 typedef std::list<MidiTimeoutCallback> MidiTimeoutList;
1146 MidiTimeoutList midi_timeouts;
1147 bool mmc_step_timeout ();
1149 MIDI::byte mtc_msg[16];
1150 MIDI::byte mtc_timecode_bits; /* encoding of SMTPE type for MTC */
1151 MIDI::byte midi_msg[16];
1152 framepos_t outbound_mtc_timecode_frame;
1153 Timecode::Time transmitting_timecode_time;
1154 int next_quarter_frame_to_send;
1156 double _frames_per_timecode_frame; /* has to be floating point because of drop frame */
1157 framecnt_t _frames_per_hour;
1158 framecnt_t _timecode_frames_per_hour;
1160 /* cache the most-recently requested time conversions. This helps when we
1161 * have multiple clocks showing the same time (e.g. the transport frame) */
1162 bool last_timecode_valid;
1163 framepos_t last_timecode_when;
1164 Timecode::Time last_timecode;
1166 bool _send_timecode_update; ///< Flag to send a full frame (Timecode) MTC message this cycle
1168 int send_midi_time_code_for_cycle (framepos_t, framepos_t, pframes_t nframes);
1170 void reset_record_status ();
1172 int no_roll (pframes_t nframes);
1173 int fail_roll (pframes_t nframes);
1175 bool non_realtime_work_pending() const { return static_cast<bool>(post_transport_work()); }
1176 bool process_can_proceed() const { return !(post_transport_work() & ProcessCannotProceedMask); }
1178 MidiControlUI* midi_control_ui;
1180 int start_midi_thread ();
1182 void set_play_loop (bool yn);
1183 void unset_play_loop ();
1184 void overwrite_some_buffers (Track *);
1185 void flush_all_inserts ();
1186 int micro_locate (framecnt_t distance);
1187 void locate (framepos_t, bool with_roll, bool with_flush, bool with_loop=false, bool force=false, bool with_mmc=true);
1188 void start_locate (framepos_t, bool with_roll, bool with_flush, bool with_loop=false, bool force=false);
1189 void force_locate (framepos_t frame, bool with_roll = false);
1190 void set_track_speed (Track *, double speed);
1191 void set_transport_speed (double speed, bool abort = false, bool clear_state = false);
1192 void stop_transport (bool abort = false, bool clear_state = false);
1193 void start_transport ();
1194 void realtime_stop (bool abort, bool clear_state);
1195 void realtime_locate ();
1196 void non_realtime_start_scrub ();
1197 void non_realtime_set_speed ();
1198 void non_realtime_locate ();
1199 void non_realtime_stop (bool abort, int entry_request_count, bool& finished);
1200 void non_realtime_overwrite (int entry_request_count, bool& finished);
1201 void post_transport ();
1202 void engine_halted ();
1203 void xrun_recovery ();
1205 TempoMap *_tempo_map;
1206 void tempo_map_changed (const PBD::PropertyChange&);
1208 /* edit/mix groups */
1210 int load_route_groups (const XMLNode&, int);
1212 std::list<RouteGroup *> _route_groups;
1213 RouteGroup* _all_route_group;
1217 boost::shared_ptr<Graph> _process_graph;
1219 SerializedRCUManager<RouteList> routes;
1221 void add_routes (RouteList&, bool auto_connect, bool save);
1222 uint32_t destructive_index;
1224 boost::shared_ptr<Route> XMLRouteFactory (const XMLNode&, int);
1225 boost::shared_ptr<Route> XMLRouteFactory_2X (const XMLNode&, int);
1227 void route_processors_changed (RouteProcessorChange);
1229 bool find_route_name (std::string const &, uint32_t& id, char* name, size_t name_len, bool);
1230 void count_existing_track_channels (ChanCount& in, ChanCount& out);
1231 void auto_connect_route (boost::shared_ptr<Route> route, ChanCount& existing_inputs, ChanCount& existing_outputs,
1232 bool with_lock, bool connect_inputs = true,
1233 ChanCount input_start = ChanCount (), ChanCount output_start = ChanCount ());
1234 void midi_output_change_handler (IOChange change, void* /*src*/, boost::weak_ptr<Route> midi_track);
1238 bool solo_update_disabled;
1240 void route_listen_changed (void *src, boost::weak_ptr<Route>);
1241 void route_mute_changed (void *src);
1242 void route_solo_changed (bool self_solo_change, void *src, boost::weak_ptr<Route>);
1243 void route_solo_isolated_changed (void *src, boost::weak_ptr<Route>);
1244 void update_route_solo_state (boost::shared_ptr<RouteList> r = boost::shared_ptr<RouteList>());
1246 void listen_position_changed ();
1247 void solo_control_mode_changed ();
1249 /* REGION MANAGEMENT */
1251 mutable Glib::Mutex region_lock;
1253 int load_regions (const XMLNode& node);
1254 int load_compounds (const XMLNode& node);
1256 void route_added_to_route_group (RouteGroup *, boost::weak_ptr<Route>);
1257 void route_removed_from_route_group (RouteGroup *, boost::weak_ptr<Route>);
1258 void route_group_property_changed (RouteGroup *);
1262 mutable Glib::Mutex source_lock;
1265 typedef std::map<PBD::ID,boost::shared_ptr<Source> > SourceMap;
1271 SourceMap get_sources() { return sources; }
1274 int load_sources (const XMLNode& node);
1275 XMLNode& get_sources_as_xml ();
1277 boost::shared_ptr<Source> XMLSourceFactory (const XMLNode&);
1281 void remove_playlist (boost::weak_ptr<Playlist>);
1282 void track_playlist_changed (boost::weak_ptr<Track>);
1283 void playlist_region_added (boost::weak_ptr<Region>);
1284 void playlist_ranges_moved (std::list<Evoral::RangeMove<framepos_t> > const &);
1285 void playlist_regions_extended (std::list<Evoral::Range<framepos_t> > const &);
1287 /* NAMED SELECTIONS */
1289 mutable Glib::Mutex named_selection_lock;
1290 typedef std::set<boost::shared_ptr<NamedSelection> > NamedSelectionList;
1291 NamedSelectionList named_selections;
1293 int load_named_selections (const XMLNode&);
1295 NamedSelection *named_selection_factory (std::string name);
1296 NamedSelection *XMLNamedSelectionFactory (const XMLNode&);
1298 /* CURVES and AUTOMATION LISTS */
1299 std::map<PBD::ID, AutomationList*> automation_lists;
1301 /* DEFAULT FADE CURVES */
1303 float default_fade_steepness;
1304 float default_fade_msecs;
1308 boost::shared_ptr<Auditioner> auditioner;
1309 void set_audition (boost::shared_ptr<Region>);
1310 void non_realtime_set_audition ();
1311 boost::shared_ptr<Region> pending_audition_region;
1317 int flatten_one_track (AudioTrack&, framepos_t start, framecnt_t cnt);
1319 /* INSERT AND SEND MANAGEMENT */
1321 boost::dynamic_bitset<uint32_t> send_bitset;
1322 boost::dynamic_bitset<uint32_t> aux_send_bitset;
1323 boost::dynamic_bitset<uint32_t> return_bitset;
1324 boost::dynamic_bitset<uint32_t> insert_bitset;
1328 struct space_and_path {
1329 uint32_t blocks; /* 4kB blocks */
1337 struct space_and_path_ascending_cmp {
1338 bool operator() (space_and_path a, space_and_path b) {
1339 return a.blocks > b.blocks;
1343 void setup_raid_path (std::string path);
1345 std::vector<space_and_path> session_dirs;
1346 std::vector<space_and_path>::iterator last_rr_session_dir;
1347 uint32_t _total_free_4k_blocks;
1348 Glib::Mutex space_lock;
1350 bool no_questions_about_missing_files;
1352 std::string get_best_session_directory_for_new_source ();
1354 mutable gint _playback_load;
1355 mutable gint _capture_load;
1359 SerializedRCUManager<BundleList> _bundles;
1360 XMLNode* _bundle_xml_node;
1361 int load_bundles (XMLNode const &);
1363 UndoHistory _history;
1364 /** current undo transaction, or 0 */
1365 UndoTransaction* _current_trans;
1366 /** GQuarks to describe the reversible commands that are currently in progress.
1367 * These may be nested, in which case more recently-started commands are toward
1368 * the front of the list.
1370 std::list<GQuark> _current_trans_quarks;
1372 void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
1373 int jack_sync_callback (jack_transport_state_t, jack_position_t*);
1374 void reset_jack_connection (jack_client_t* jack);
1375 void process_rtop (SessionEvent*);
1377 void update_latency (bool playback);
1379 XMLNode& state(bool);
1382 typedef std::list<Click*> Clicks;
1385 boost::shared_ptr<IO> _click_io;
1386 boost::shared_ptr<Amp> _click_gain;
1388 Sample* click_emphasis_data;
1389 framecnt_t click_length;
1390 framecnt_t click_emphasis_length;
1391 mutable Glib::RWLock click_lock;
1393 static const Sample default_click[];
1394 static const framecnt_t default_click_length;
1395 static const Sample default_click_emphasis[];
1396 static const framecnt_t default_click_emphasis_length;
1399 framepos_t _clicks_cleared;
1400 void setup_click_sounds (int which);
1401 void setup_click_sounds (Sample**, Sample const *, framecnt_t*, framecnt_t, std::string const &);
1402 void clear_clicks ();
1403 void click (framepos_t start, framecnt_t nframes);
1405 std::vector<Route*> master_outs;
1407 /* range playback */
1409 std::list<AudioRange> current_audio_range;
1411 void set_play_range (std::list<AudioRange>&, bool leave_rolling);
1412 void unset_play_range ();
1417 boost::shared_ptr<Route> _master_out;
1418 boost::shared_ptr<Route> _monitor_out;
1420 void auto_connect_master_bus ();
1422 /* Windows VST support */
1424 long _windows_vst_callback (
1433 /* number of hardware ports we're using,
1434 based on max (requested,available)
1437 ChanCount n_physical_outputs;
1438 ChanCount n_physical_inputs;
1440 int find_all_sources (std::string path, std::set<std::string>& result);
1441 int find_all_sources_across_snapshots (std::set<std::string>& result, bool exclude_this_snapshot);
1443 typedef std::set<boost::shared_ptr<PBD::Controllable> > Controllables;
1444 Glib::Mutex controllables_lock;
1445 Controllables controllables;
1447 boost::shared_ptr<PBD::Controllable> _solo_cut_control;
1449 void reset_native_file_format();
1450 bool first_file_data_format_reset;
1451 bool first_file_header_format_reset;
1453 void config_changed (std::string, bool);
1455 XMLNode& get_control_protocol_state ();
1457 void set_history_depth (uint32_t depth);
1458 void sync_order_keys ();
1460 static bool _disable_all_loaded_plugins;
1462 SessionMetadata * _metadata;
1464 mutable bool have_looped; ///< Used in ::audible_frame(*)
1466 void update_have_rec_enabled_track ();
1467 gint _have_rec_enabled_track;
1469 static int ask_about_playlist_deletion (boost::shared_ptr<Playlist>);
1471 /* realtime "apply to set of routes" operations */
1472 template<typename T> SessionEvent*
1473 get_rt_event (boost::shared_ptr<RouteList> rl, T targ, SessionEvent::RTeventCallback after, bool group_override,
1474 void (Session::*method) (boost::shared_ptr<RouteList>, T, bool)) {
1475 SessionEvent* ev = new SessionEvent (SessionEvent::RealTimeOperation, SessionEvent::Add, SessionEvent::Immediate, 0, 0.0);
1476 ev->rt_slot = boost::bind (method, this, rl, targ, group_override);
1477 ev->rt_return = after;
1478 ev->event_loop = PBD::EventLoop::get_event_loop_for_thread ();
1483 void rt_cancel_solo_after_disconnect (boost::shared_ptr<RouteList>, bool upstream, bool /* ignored*/ );
1484 void rt_set_solo (boost::shared_ptr<RouteList>, bool yn, bool group_override);
1485 void rt_set_just_one_solo (boost::shared_ptr<RouteList>, bool yn, bool /* ignored*/ );
1486 void rt_set_mute (boost::shared_ptr<RouteList>, bool yn, bool group_override);
1487 void rt_set_listen (boost::shared_ptr<RouteList>, bool yn, bool group_override);
1488 void rt_set_solo_isolated (boost::shared_ptr<RouteList>, bool yn, bool group_override);
1489 void rt_set_record_enabled (boost::shared_ptr<RouteList>, bool yn, bool group_override);
1490 void rt_set_monitoring (boost::shared_ptr<RouteList>, MonitorChoice, bool group_override);
1492 /** temporary list of Diskstreams used only during load of 2.X sessions */
1493 std::list<boost::shared_ptr<Diskstream> > _diskstreams_2X;
1495 void add_session_range_location (framepos_t, framepos_t);
1497 void setup_midi_machine_control ();
1499 void route_order_key_changed ();
1501 void step_edit_status_change (bool);
1502 uint32_t _step_editors;
1504 /** true if timecode transmission by the transport is suspended, otherwise false */
1505 mutable gint _suspend_timecode_transmission;
1507 void update_locations_after_tempo_map_change (Locations::LocationList &);
1509 void start_time_changed (framepos_t);
1510 void end_time_changed (framepos_t);
1512 void set_track_monitor_input_status (bool);
1513 framepos_t compute_stop_limit () const;
1515 boost::shared_ptr<Speakers> _speakers;
1516 void load_nested_sources (const XMLNode& node);
1518 /** The directed graph of routes that is currently being used for audio processing
1519 and solo/mute computations.
1521 GraphEdges _current_route_graph;
1523 uint32_t next_control_id () const;
1524 bool ignore_route_processor_changes;
1526 MidiClockTicker* midi_clock;
1529 } // namespace ARDOUR
1531 #endif /* __ardour_session_h__ */