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.
21 #include "libardour-config.h"
30 #include <boost/algorithm/string.hpp>
32 #include "pbd/xml++.h"
33 #include "pbd/enumwriter.h"
34 #include "pbd/memento_command.h"
35 #include "pbd/stacktrace.h"
36 #include "pbd/convert.h"
37 #include "pbd/boost_debug.h"
39 #include "ardour/amp.h"
40 #include "ardour/audio_buffer.h"
41 #include "ardour/audio_track.h"
42 #include "ardour/audio_port.h"
43 #include "ardour/audioengine.h"
44 #include "ardour/buffer.h"
45 #include "ardour/buffer_set.h"
46 #include "ardour/capturing_processor.h"
47 #include "ardour/debug.h"
48 #include "ardour/delivery.h"
49 #include "ardour/internal_return.h"
50 #include "ardour/internal_send.h"
51 #include "ardour/meter.h"
52 #include "ardour/delayline.h"
53 #include "ardour/midi_buffer.h"
54 #include "ardour/midi_port.h"
55 #include "ardour/monitor_processor.h"
56 #include "ardour/pannable.h"
57 #include "ardour/panner.h"
58 #include "ardour/panner_shell.h"
59 #include "ardour/plugin_insert.h"
60 #include "ardour/port.h"
61 #include "ardour/port_insert.h"
62 #include "ardour/processor.h"
63 #include "ardour/profile.h"
64 #include "ardour/route.h"
65 #include "ardour/route_group.h"
66 #include "ardour/send.h"
67 #include "ardour/session.h"
68 #include "ardour/unknown_processor.h"
69 #include "ardour/utils.h"
74 using namespace ARDOUR;
77 PBD::Signal0<void> Route::SyncOrderKeys;
78 PBD::Signal0<void> Route::RemoteControlIDChange;
80 Route::Route (Session& sess, string name, Flag flg, DataType default_type)
81 : SessionObject (sess, name)
83 , GraphNode (sess._process_graph)
86 , _signal_latency_at_amp_position (0)
87 , _signal_latency_at_trim_position (0)
90 , _pending_process_reorder (0)
91 , _pending_signals (0)
93 , _pending_declick (true)
94 , _meter_point (MeterPostFader)
95 , _pending_meter_point (MeterPostFader)
96 , _meter_type (MeterPeak)
98 , _soloed_by_others_upstream (0)
99 , _soloed_by_others_downstream (0)
100 , _solo_isolated (false)
101 , _solo_isolated_by_upstream (0)
102 , _denormal_protection (false)
105 , _declickable (false)
106 , _mute_master (new MuteMaster (sess, name))
107 , _have_internal_generator (false)
109 , _default_type (default_type)
111 , _has_order_key (false)
112 , _remote_control_id (0)
114 , _in_configure_processors (false)
115 , _initial_io_setup (false)
116 , _custom_meter_position_noted (false)
118 processor_max_streams.reset();
124 /* set default meter type */
126 _meter_type = Config->get_meter_type_master ();
128 else if (dynamic_cast<Track*>(this)) {
129 _meter_type = Config->get_meter_type_track ();
131 _meter_type = Config->get_meter_type_bus ();
134 /* add standard controls */
136 _solo_control.reset (new SoloControllable (X_("solo"), shared_from_this ()));
137 _mute_control.reset (new MuteControllable (X_("mute"), shared_from_this ()));
139 _solo_control->set_flags (Controllable::Flag (_solo_control->flags() | Controllable::Toggle));
140 _mute_control->set_flags (Controllable::Flag (_mute_control->flags() | Controllable::Toggle));
142 add_control (_solo_control);
143 add_control (_mute_control);
147 if (!(_flags & Route::MonitorOut)) {
148 _pannable.reset (new Pannable (_session));
151 /* input and output objects */
153 _input.reset (new IO (_session, _name, IO::Input, _default_type));
154 _output.reset (new IO (_session, _name, IO::Output, _default_type));
156 _input->changed.connect_same_thread (*this, boost::bind (&Route::input_change_handler, this, _1, _2));
157 _input->PortCountChanging.connect_same_thread (*this, boost::bind (&Route::input_port_count_changing, this, _1));
159 _output->changed.connect_same_thread (*this, boost::bind (&Route::output_change_handler, this, _1, _2));
160 _output->PortCountChanging.connect_same_thread (*this, boost::bind (&Route::output_port_count_changing, this, _1));
162 #if 0 // not used - just yet
163 if (!is_master() && !is_monitor() && !is_auditioner()) {
164 _delayline.reset (new DelayLine (_session, _name));
165 add_processor (_delayline, PreFader);
169 /* add amp processor */
171 _amp.reset (new Amp (_session));
172 add_processor (_amp, PostFader);
175 _trim.reset (new Amp (_session, "trim"));
176 _trim->set_display_to_user (false);
178 if (dynamic_cast<AudioTrack*>(this)) {
179 /* we can't do this in the AudioTrack's constructor
180 * because _trim does not exit then
184 else if (!dynamic_cast<Track*>(this) && ! ( is_monitor() || is_auditioner() )) {
189 /* create standard processors: meter, main outs, monitor out;
190 they will be added to _processors by setup_invisible_processors ()
193 _meter.reset (new PeakMeter (_session, _name));
194 _meter->set_owner (this);
195 _meter->set_display_to_user (false);
198 _main_outs.reset (new Delivery (_session, _output, _pannable, _mute_master, _name, Delivery::Main));
199 _main_outs->activate ();
202 /* where we listen to tracks */
203 _intreturn.reset (new InternalReturn (_session));
204 _intreturn->activate ();
206 /* the thing that provides proper control over a control/monitor/listen bus
207 (such as per-channel cut, dim, solo, invert, etc).
209 _monitor_control.reset (new MonitorProcessor (_session));
210 _monitor_control->activate ();
213 if (is_master() || is_monitor() || is_auditioner()) {
214 _mute_master->set_solo_ignore (true);
217 /* now that we have _meter, its safe to connect to this */
220 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
221 configure_processors (0);
229 DEBUG_TRACE (DEBUG::Destruction, string_compose ("route %1 destructor\n", _name));
231 /* do this early so that we don't get incoming signals as we are going through destruction
236 /* don't use clear_processors here, as it depends on the session which may
237 be half-destroyed by now
240 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
241 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
242 (*i)->drop_references ();
245 _processors.clear ();
249 Route::set_remote_control_id (uint32_t id, bool notify_class_listeners)
251 if (Config->get_remote_model() != UserOrdered) {
255 set_remote_control_id_internal (id, notify_class_listeners);
259 Route::set_remote_control_id_internal (uint32_t id, bool notify_class_listeners)
261 /* force IDs for master/monitor busses and prevent
262 any other route from accidentally getting these IDs
263 (i.e. legacy sessions)
266 if (is_master() && id != MasterBusRemoteControlID) {
267 id = MasterBusRemoteControlID;
270 if (is_monitor() && id != MonitorBusRemoteControlID) {
271 id = MonitorBusRemoteControlID;
278 /* don't allow it to collide */
280 if (!is_master () && !is_monitor() &&
281 (id == MasterBusRemoteControlID || id == MonitorBusRemoteControlID)) {
282 id += MonitorBusRemoteControlID;
285 if (id != remote_control_id()) {
286 _remote_control_id = id;
287 RemoteControlIDChanged ();
289 if (notify_class_listeners) {
290 RemoteControlIDChange ();
296 Route::remote_control_id() const
299 return MasterBusRemoteControlID;
303 return MonitorBusRemoteControlID;
306 return _remote_control_id;
310 Route::has_order_key () const
312 return _has_order_key;
316 Route::order_key () const
322 Route::set_remote_control_id_explicit (uint32_t rid)
324 if (is_master() || is_monitor() || is_auditioner()) {
325 /* hard-coded remote IDs, or no remote ID */
329 if (_remote_control_id != rid) {
330 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("%1: set edit-based RID to %2\n", name(), rid));
331 _remote_control_id = rid;
332 RemoteControlIDChanged (); /* EMIT SIGNAL (per-route) */
335 /* don't emit the class-level RID signal RemoteControlIDChange here,
336 leave that to the entity that changed the order key, so that we
337 don't get lots of emissions for no good reasons (e.g. when changing
338 all route order keys).
340 See Session::sync_remote_id_from_order_keys() for the (primary|only)
341 spot where that is emitted.
346 Route::set_order_key (uint32_t n)
348 _has_order_key = true;
350 if (_order_key == n) {
356 DEBUG_TRACE (DEBUG::OrderKeys, string_compose ("%1 order key set to %2\n",
357 name(), order_key ()));
359 _session.set_dirty ();
363 Route::ensure_track_or_route_name(string name, Session &session)
365 string newname = name;
367 while (!session.io_name_is_legal (newname)) {
368 newname = bump_name_once (newname, ' ');
375 Route::inc_gain (gain_t fraction, void *src)
377 _amp->inc_gain (fraction, src);
381 Route::set_gain (gain_t val, void *src)
383 if (src != 0 && _route_group && src != _route_group && _route_group->is_active() && _route_group->is_gain()) {
385 if (_route_group->is_relative()) {
387 gain_t usable_gain = _amp->gain();
388 if (usable_gain < 0.000001f) {
389 usable_gain = 0.000001f;
393 if (delta < 0.000001f) {
397 delta -= usable_gain;
402 gain_t factor = delta / usable_gain;
405 factor = _route_group->get_max_factor(factor);
406 if (factor == 0.0f) {
407 _amp->gain_control()->Changed(); /* EMIT SIGNAL */
411 factor = _route_group->get_min_factor(factor);
412 if (factor == 0.0f) {
413 _amp->gain_control()->Changed(); /* EMIT SIGNAL */
418 _route_group->foreach_route (boost::bind (&Route::inc_gain, _1, factor, _route_group));
422 _route_group->foreach_route (boost::bind (&Route::set_gain, _1, val, _route_group));
428 if (val == _amp->gain()) {
432 _amp->set_gain (val, src);
436 Route::inc_trim (gain_t fraction, void *src)
438 _trim->inc_gain (fraction, src);
442 Route::set_trim (gain_t val, void * /* src */)
444 // TODO route group, see set_gain()
445 _trim->set_gain (val, 0);
449 Route::maybe_declick (BufferSet&, framecnt_t, int)
451 /* this is the "bus" implementation and they never declick.
456 /** Process this route for one (sub) cycle (process thread)
458 * @param bufs Scratch buffers to use for the signal path
459 * @param start_frame Initial transport frame
460 * @param end_frame Final transport frame
461 * @param nframes Number of frames to output (to ports)
463 * Note that (end_frame - start_frame) may not be equal to nframes when the
464 * transport speed isn't 1.0 (eg varispeed).
467 Route::process_output_buffers (BufferSet& bufs,
468 framepos_t start_frame, framepos_t end_frame, pframes_t nframes,
469 int declick, bool gain_automation_ok)
471 /* Caller must hold process lock */
472 assert (!AudioEngine::instance()->process_lock().trylock());
474 Glib::Threads::RWLock::ReaderLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
476 // can this actually happen? functions calling process_output_buffers()
477 // already take a reader-lock.
478 bufs.silence (nframes, 0);
482 /* figure out if we're going to use gain automation */
483 if (gain_automation_ok) {
484 _amp->set_gain_automation_buffer (_session.gain_automation_buffer ());
485 _amp->setup_gain_automation (
486 start_frame + _signal_latency_at_amp_position,
487 end_frame + _signal_latency_at_amp_position,
490 _trim->set_gain_automation_buffer (_session.trim_automation_buffer ());
491 _trim->setup_gain_automation (
492 start_frame + _signal_latency_at_trim_position,
493 end_frame + _signal_latency_at_trim_position,
496 _amp->apply_gain_automation (false);
497 _trim->apply_gain_automation (false);
500 /* Tell main outs what to do about monitoring. We do this so that
501 on a transition between monitoring states we get a de-clicking gain
502 change in the _main_outs delivery, if config.get_use_monitor_fades()
505 We override this in the case where we have an internal generator.
507 bool silence = _have_internal_generator ? false : (monitoring_state () == MonitoringSilence);
509 _main_outs->no_outs_cuz_we_no_monitor (silence);
511 /* -------------------------------------------------------------------------------------------
512 GLOBAL DECLICK (for transport changes etc.)
513 ----------------------------------------------------------------------------------------- */
515 maybe_declick (bufs, nframes, declick);
516 _pending_declick = 0;
518 /* -------------------------------------------------------------------------------------------
519 DENORMAL CONTROL/PHASE INVERT
520 ----------------------------------------------------------------------------------------- */
522 if (_phase_invert.any ()) {
526 if (_denormal_protection || Config->get_denormal_protection()) {
528 for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i, ++chn) {
529 Sample* const sp = i->data();
531 if (_phase_invert[chn]) {
532 for (pframes_t nx = 0; nx < nframes; ++nx) {
537 for (pframes_t nx = 0; nx < nframes; ++nx) {
545 for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i, ++chn) {
546 Sample* const sp = i->data();
548 if (_phase_invert[chn]) {
549 for (pframes_t nx = 0; nx < nframes; ++nx) {
558 if (_denormal_protection || Config->get_denormal_protection()) {
560 for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i) {
561 Sample* const sp = i->data();
562 for (pframes_t nx = 0; nx < nframes; ++nx) {
570 /* -------------------------------------------------------------------------------------------
572 ----------------------------------------------------------------------------------------- */
574 /* set this to be true if the meter will already have been ::run() earlier */
575 bool const meter_already_run = metering_state() == MeteringInput;
577 framecnt_t latency = 0;
579 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
581 if (meter_already_run && boost::dynamic_pointer_cast<PeakMeter> (*i)) {
582 /* don't ::run() the meter, otherwise it will have its previous peak corrupted */
587 /* if it has any inputs, make sure they match */
588 if (boost::dynamic_pointer_cast<UnknownProcessor> (*i) == 0 && (*i)->input_streams() != ChanCount::ZERO) {
589 if (bufs.count() != (*i)->input_streams()) {
591 DEBUG::Processors, string_compose (
592 "input port mismatch %1 bufs = %2 input for %3 = %4\n",
593 _name, bufs.count(), (*i)->name(), (*i)->input_streams()
600 /* should we NOT run plugins here if the route is inactive?
601 do we catch route != active somewhere higher?
604 if (boost::dynamic_pointer_cast<Send>(*i) != 0) {
605 boost::dynamic_pointer_cast<Send>(*i)->set_delay_in(_signal_latency - latency);
608 (*i)->run (bufs, start_frame - latency, end_frame - latency, nframes, *i != _processors.back());
609 bufs.set_count ((*i)->output_streams());
611 if ((*i)->active ()) {
612 latency += (*i)->signal_latency ();
618 Route::bounce_process (BufferSet& buffers, framepos_t start, framecnt_t nframes,
619 boost::shared_ptr<Processor> endpoint,
620 bool include_endpoint, bool for_export, bool for_freeze)
622 /* If no processing is required, there's no need to go any further. */
623 if (!endpoint && !include_endpoint) {
627 framecnt_t latency = bounce_get_latency(_amp, false, for_export, for_freeze);
628 _amp->set_gain_automation_buffer (_session.gain_automation_buffer ());
629 _amp->setup_gain_automation (start - latency, start - latency + nframes, nframes);
631 /* trim is always at the top, for bounce no latency compensation is needed */
632 _trim->set_gain_automation_buffer (_session.trim_automation_buffer ());
633 _trim->setup_gain_automation (start, start + nframes, nframes);
636 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
638 if (!include_endpoint && (*i) == endpoint) {
642 /* if we're not exporting, stop processing if we come across a routing processor. */
643 if (!for_export && boost::dynamic_pointer_cast<PortInsert>(*i)) {
646 if (!for_export && for_freeze && (*i)->does_routing() && (*i)->active()) {
650 /* don't run any processors that does routing.
651 * oh, and don't bother with the peak meter either.
653 if (!(*i)->does_routing() && !boost::dynamic_pointer_cast<PeakMeter>(*i)) {
654 (*i)->run (buffers, start - latency, start - latency + nframes, nframes, true);
655 buffers.set_count ((*i)->output_streams());
656 latency += (*i)->signal_latency ();
659 if ((*i) == endpoint) {
666 Route::bounce_get_latency (boost::shared_ptr<Processor> endpoint,
667 bool include_endpoint, bool for_export, bool for_freeze) const
669 framecnt_t latency = 0;
670 if (!endpoint && !include_endpoint) {
674 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
675 if (!include_endpoint && (*i) == endpoint) {
678 if (!for_export && boost::dynamic_pointer_cast<PortInsert>(*i)) {
681 if (!for_export && for_freeze && (*i)->does_routing() && (*i)->active()) {
684 if (!(*i)->does_routing() && !boost::dynamic_pointer_cast<PeakMeter>(*i)) {
685 latency += (*i)->signal_latency ();
687 if ((*i) == endpoint) {
695 Route::bounce_get_output_streams (ChanCount &cc, boost::shared_ptr<Processor> endpoint,
696 bool include_endpoint, bool for_export, bool for_freeze) const
698 if (!endpoint && !include_endpoint) {
702 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
703 if (!include_endpoint && (*i) == endpoint) {
706 if (!for_export && boost::dynamic_pointer_cast<PortInsert>(*i)) {
709 if (!for_export && for_freeze && (*i)->does_routing() && (*i)->active()) {
712 if (!(*i)->does_routing() && !boost::dynamic_pointer_cast<PeakMeter>(*i)) {
713 cc = (*i)->output_streams();
715 if ((*i) == endpoint) {
723 Route::n_process_buffers ()
725 return max (_input->n_ports(), processor_max_streams);
729 Route::monitor_run (framepos_t start_frame, framepos_t end_frame, pframes_t nframes, int declick)
731 assert (is_monitor());
732 BufferSet& bufs (_session.get_route_buffers (n_process_buffers()));
733 fill_buffers_with_input (bufs, _input, nframes);
734 passthru (bufs, start_frame, end_frame, nframes, declick);
738 Route::passthru (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, int declick)
742 if (is_monitor() && _session.listening() && !_session.is_auditioning()) {
744 /* control/monitor bus ignores input ports when something is
745 feeding the listen "stream". data will "arrive" into the
746 route from the intreturn processor element.
749 bufs.silence (nframes, 0);
752 write_out_of_band_data (bufs, start_frame, end_frame, nframes);
753 process_output_buffers (bufs, start_frame, end_frame, nframes, declick, true);
757 Route::passthru_silence (framepos_t start_frame, framepos_t end_frame, pframes_t nframes, int declick)
759 BufferSet& bufs (_session.get_route_buffers (n_process_buffers(), true));
761 bufs.set_count (_input->n_ports());
762 write_out_of_band_data (bufs, start_frame, end_frame, nframes);
763 process_output_buffers (bufs, start_frame, end_frame, nframes, declick, false);
767 Route::set_listen (bool yn, void* src)
773 if (_route_group && src != _route_group && _route_group->is_active() && _route_group->is_solo()) {
774 _route_group->foreach_route (boost::bind (&Route::set_listen, _1, yn, _route_group));
779 if (yn != _monitor_send->active()) {
781 _monitor_send->activate ();
782 _mute_master->set_soloed (true);
784 _monitor_send->deactivate ();
785 _mute_master->set_soloed (false);
788 listen_changed (src); /* EMIT SIGNAL */
794 Route::listening_via_monitor () const
797 return _monitor_send->active ();
804 Route::set_solo_safe (bool yn, void *src)
806 if (_solo_safe != yn) {
808 solo_safe_changed (src);
813 Route::solo_safe() const
819 Route::set_solo (bool yn, void *src)
822 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1 ignore solo change due to solo-safe\n", name()));
826 if (is_master() || is_monitor() || is_auditioner()) {
827 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1 ignore solo change (master, monitor or auditioner)\n", name()));
831 if (_route_group && src != _route_group && _route_group->is_active() && _route_group->is_solo()) {
832 _route_group->foreach_route (boost::bind (&Route::set_solo, _1, yn, _route_group));
836 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1: set solo => %2, src: %3 grp ? %4 currently self-soloed ? %5\n",
837 name(), yn, src, (src == _route_group), self_soloed()));
839 if (self_soloed() != yn) {
841 set_mute_master_solo ();
842 solo_changed (true, src); /* EMIT SIGNAL */
843 _solo_control->Changed (); /* EMIT SIGNAL */
846 /* XXX TRACKS DEVELOPERS: THIS LOGIC SUGGESTS THAT YOU ARE NOT AWARE OF
847 Config->get_solo_mute_overrride().
850 if (yn && Profile->get_trx()) {
851 set_mute (false, src);
856 Route::set_self_solo (bool yn)
858 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1: set SELF solo => %2\n", name(), yn));
863 Route::mod_solo_by_others_upstream (int32_t delta)
866 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1 ignore solo-by-upstream due to solo-safe\n", name()));
870 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1 mod solo-by-upstream by %2, current up = %3 down = %4\n",
871 name(), delta, _soloed_by_others_upstream, _soloed_by_others_downstream));
873 uint32_t old_sbu = _soloed_by_others_upstream;
876 if (_soloed_by_others_upstream >= (uint32_t) abs (delta)) {
877 _soloed_by_others_upstream += delta;
879 _soloed_by_others_upstream = 0;
882 _soloed_by_others_upstream += delta;
885 DEBUG_TRACE (DEBUG::Solo, string_compose (
886 "%1 SbU delta %2 = %3 old = %4 sbd %5 ss %6 exclusive %7\n",
887 name(), delta, _soloed_by_others_upstream, old_sbu,
888 _soloed_by_others_downstream, _self_solo, Config->get_exclusive_solo()));
890 /* push the inverse solo change to everything that feeds us.
892 This is important for solo-within-group. When we solo 1 track out of N that
893 feed a bus, that track will cause mod_solo_by_upstream (+1) to be called
894 on the bus. The bus then needs to call mod_solo_by_downstream (-1) on all
895 tracks that feed it. This will silence them if they were audible because
896 of a bus solo, but the newly soloed track will still be audible (because
899 but .. do this only when we are being told to solo-by-upstream (i.e delta = +1),
903 if ((_self_solo || _soloed_by_others_downstream) &&
904 ((old_sbu == 0 && _soloed_by_others_upstream > 0) ||
905 (old_sbu > 0 && _soloed_by_others_upstream == 0))) {
907 if (delta > 0 || !Config->get_exclusive_solo()) {
908 DEBUG_TRACE (DEBUG::Solo, "\t ... INVERT push\n");
909 for (FedBy::iterator i = _fed_by.begin(); i != _fed_by.end(); ++i) {
910 boost::shared_ptr<Route> sr = i->r.lock();
912 sr->mod_solo_by_others_downstream (-delta);
918 set_mute_master_solo ();
919 solo_changed (false, this);
923 Route::mod_solo_by_others_downstream (int32_t delta)
926 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1 ignore solo-by-downstream due to solo safe\n", name()));
930 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1 mod solo-by-downstream by %2, current up = %3 down = %4\n",
931 name(), delta, _soloed_by_others_upstream, _soloed_by_others_downstream));
934 if (_soloed_by_others_downstream >= (uint32_t) abs (delta)) {
935 _soloed_by_others_downstream += delta;
937 _soloed_by_others_downstream = 0;
940 _soloed_by_others_downstream += delta;
943 DEBUG_TRACE (DEBUG::Solo, string_compose ("%1 SbD delta %2 = %3\n", name(), delta, _soloed_by_others_downstream));
945 set_mute_master_solo ();
946 solo_changed (false, this);
950 Route::set_mute_master_solo ()
952 _mute_master->set_soloed (self_soloed() || soloed_by_others_downstream() || soloed_by_others_upstream());
956 Route::mod_solo_isolated_by_upstream (bool yn, void* src)
958 bool old = solo_isolated ();
961 if (_solo_isolated_by_upstream >= 1) {
962 _solo_isolated_by_upstream--;
964 _solo_isolated_by_upstream = 0;
967 _solo_isolated_by_upstream++;
970 if (solo_isolated() != old) {
971 /* solo isolated status changed */
972 _mute_master->set_solo_ignore (yn);
973 solo_isolated_changed (src);
978 Route::set_solo_isolated (bool yn, void *src)
980 if (is_master() || is_monitor() || is_auditioner()) {
984 if (_route_group && src != _route_group && _route_group->is_active() && _route_group->is_solo()) {
985 _route_group->foreach_route (boost::bind (&Route::set_solo_isolated, _1, yn, _route_group));
989 bool changed = false;
992 if (_solo_isolated == false) {
993 _mute_master->set_solo_ignore (true);
996 _solo_isolated = true;
998 if (_solo_isolated == true) {
999 _solo_isolated = false;
1000 _mute_master->set_solo_ignore (false);
1010 /* forward propagate solo-isolate status to everything fed by this route, but not those via sends only */
1012 boost::shared_ptr<RouteList> routes = _session.get_routes ();
1013 for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
1015 if ((*i).get() == this || (*i)->is_master() || (*i)->is_monitor() || (*i)->is_auditioner()) {
1020 bool does_feed = feeds (*i, &sends_only);
1022 if (does_feed && !sends_only) {
1023 (*i)->mod_solo_isolated_by_upstream (yn, src);
1027 /* XXX should we back-propagate as well? (April 2010: myself and chris goddard think not) */
1029 solo_isolated_changed (src);
1033 Route::solo_isolated () const
1035 return (_solo_isolated == true) || (_solo_isolated_by_upstream > 0);
1039 Route::set_mute_points (MuteMaster::MutePoint mp)
1041 _mute_master->set_mute_points (mp);
1042 mute_points_changed (); /* EMIT SIGNAL */
1044 if (_mute_master->muted_by_self()) {
1045 mute_changed (this); /* EMIT SIGNAL */
1046 _mute_control->Changed (); /* EMIT SIGNAL */
1051 Route::set_mute (bool yn, void *src)
1053 if (_route_group && src != _route_group && _route_group->is_active() && _route_group->is_mute()) {
1054 _route_group->foreach_route (boost::bind (&Route::set_mute, _1, yn, _route_group));
1058 if (muted() != yn) {
1059 _mute_master->set_muted_by_self (yn);
1060 /* allow any derived classes to respond to the mute change
1061 before anybody else knows about it.
1064 /* tell everyone else */
1065 mute_changed (src); /* EMIT SIGNAL */
1066 _mute_control->Changed (); /* EMIT SIGNAL */
1071 Route::muted () const
1073 return _mute_master->muted_by_self();
1077 Route::muted_by_others () const
1079 //master is never muted by others
1083 //now check to see if something is soloed (and I am not)
1084 return (_session.soloing() && !self_soloed() && !solo_isolated());
1089 dump_processors(const string& name, const list<boost::shared_ptr<Processor> >& procs)
1091 cerr << name << " {" << endl;
1092 for (list<boost::shared_ptr<Processor> >::const_iterator p = procs.begin();
1093 p != procs.end(); ++p) {
1094 cerr << "\t" << (*p)->name() << " ID = " << (*p)->id() << " @ " << (*p) << endl;
1096 cerr << "}" << endl;
1100 /** Supposing that we want to insert a Processor at a given Placement, return
1101 * the processor to add the new one before (or 0 to add at the end).
1103 boost::shared_ptr<Processor>
1104 Route::before_processor_for_placement (Placement p)
1106 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1108 ProcessorList::iterator loc;
1110 if (p == PreFader) {
1111 /* generic pre-fader: insert immediately before the amp */
1112 loc = find (_processors.begin(), _processors.end(), _amp);
1114 /* generic post-fader: insert right before the main outs */
1115 loc = find (_processors.begin(), _processors.end(), _main_outs);
1118 return loc != _processors.end() ? *loc : boost::shared_ptr<Processor> ();
1121 /** Supposing that we want to insert a Processor at a given index, return
1122 * the processor to add the new one before (or 0 to add at the end).
1124 boost::shared_ptr<Processor>
1125 Route::before_processor_for_index (int index)
1128 return boost::shared_ptr<Processor> ();
1131 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1133 ProcessorList::iterator i = _processors.begin ();
1135 while (i != _processors.end() && j < index) {
1136 if ((*i)->display_to_user()) {
1143 return (i != _processors.end() ? *i : boost::shared_ptr<Processor> ());
1146 /** Add a processor either pre- or post-fader
1147 * @return 0 on success, non-0 on failure.
1150 Route::add_processor (boost::shared_ptr<Processor> processor, Placement placement, ProcessorStreams* err, bool activation_allowed)
1152 return add_processor (processor, before_processor_for_placement (placement), err, activation_allowed);
1156 /** Add a processor to a route such that it ends up with a given index into the visible processors.
1157 * @param index Index to add the processor at, or -1 to add at the end of the list.
1158 * @return 0 on success, non-0 on failure.
1161 Route::add_processor_by_index (boost::shared_ptr<Processor> processor, int index, ProcessorStreams* err, bool activation_allowed)
1163 return add_processor (processor, before_processor_for_index (index), err, activation_allowed);
1166 /** Add a processor to the route.
1167 * @param before An existing processor in the list, or 0; the new processor will be inserted immediately before it (or at the end).
1168 * @return 0 on success, non-0 on failure.
1171 Route::add_processor (boost::shared_ptr<Processor> processor, boost::shared_ptr<Processor> before, ProcessorStreams* err, bool activation_allowed)
1173 assert (processor != _meter);
1174 assert (processor != _main_outs);
1176 DEBUG_TRACE (DEBUG::Processors, string_compose (
1177 "%1 adding processor %2\n", name(), processor->name()));
1179 if (!AudioEngine::instance()->connected() || !processor) {
1184 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
1185 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
1186 ProcessorState pstate (this);
1188 boost::shared_ptr<PluginInsert> pi;
1189 boost::shared_ptr<PortInsert> porti;
1191 if (processor == _amp) {
1192 /* Ensure that only one amp is in the list at any time */
1193 ProcessorList::iterator check = find (_processors.begin(), _processors.end(), processor);
1194 if (check != _processors.end()) {
1195 if (before == _amp) {
1196 /* Already in position; all is well */
1199 _processors.erase (check);
1204 assert (find (_processors.begin(), _processors.end(), processor) == _processors.end ());
1206 ProcessorList::iterator loc;
1208 /* inserting before a processor; find it */
1209 loc = find (_processors.begin(), _processors.end(), before);
1210 if (loc == _processors.end ()) {
1215 /* inserting at end */
1216 loc = _processors.end ();
1219 _processors.insert (loc, processor);
1220 processor->set_owner (this);
1222 // Set up processor list channels. This will set processor->[input|output]_streams(),
1223 // configure redirect ports properly, etc.
1226 if (configure_processors_unlocked (err)) {
1228 configure_processors_unlocked (0); // it worked before we tried to add it ...
1233 if ((pi = boost::dynamic_pointer_cast<PluginInsert>(processor)) != 0) {
1235 if (pi->has_no_inputs ()) {
1236 /* generator plugin */
1237 _have_internal_generator = true;
1242 if (activation_allowed && (!_session.get_bypass_all_loaded_plugins () || !processor->display_to_user ())) {
1243 processor->activate ();
1246 processor->ActiveChanged.connect_same_thread (*this, boost::bind (&Session::update_latency_compensation, &_session, false));
1248 _output->set_user_latency (0);
1251 reset_instrument_info ();
1252 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
1253 set_processor_positions ();
1259 Route::add_processor_from_xml_2X (const XMLNode& node, int version)
1261 const XMLProperty *prop;
1264 boost::shared_ptr<Processor> processor;
1266 /* bit of a hack: get the `placement' property from the <Redirect> tag here
1267 so that we can add the processor in the right place (pre/post-fader)
1270 XMLNodeList const & children = node.children ();
1271 XMLNodeList::const_iterator i = children.begin ();
1273 while (i != children.end() && (*i)->name() != X_("Redirect")) {
1277 Placement placement = PreFader;
1279 if (i != children.end()) {
1280 if ((prop = (*i)->property (X_("placement"))) != 0) {
1281 placement = Placement (string_2_enum (prop->value(), placement));
1285 if (node.name() == "Insert") {
1287 if ((prop = node.property ("type")) != 0) {
1289 if (prop->value() == "ladspa" || prop->value() == "Ladspa" ||
1290 prop->value() == "lv2" ||
1291 prop->value() == "windows-vst" ||
1292 prop->value() == "lxvst" ||
1293 prop->value() == "audiounit") {
1295 if (_session.get_disable_all_loaded_plugins ()) {
1296 processor.reset (new UnknownProcessor (_session, node));
1298 processor.reset (new PluginInsert (_session));
1303 processor.reset (new PortInsert (_session, _pannable, _mute_master));
1308 } else if (node.name() == "Send") {
1310 boost::shared_ptr<Pannable> sendpan (new Pannable (_session));
1311 processor.reset (new Send (_session, sendpan, _mute_master));
1315 error << string_compose(_("unknown Processor type \"%1\"; ignored"), node.name()) << endmsg;
1319 if (processor->set_state (node, version)) {
1323 //A2 uses the "active" flag in the toplevel redirect node, not in the child plugin/IO
1324 if (i != children.end()) {
1325 if ((prop = (*i)->property (X_("active"))) != 0) {
1326 if ( string_is_affirmative (prop->value()) && (!_session.get_bypass_all_loaded_plugins () || !processor->display_to_user () ) )
1327 processor->activate();
1329 processor->deactivate();
1333 return (add_processor (processor, placement, 0, false) == 0);
1336 catch (failed_constructor &err) {
1337 warning << _("processor could not be created. Ignored.") << endmsg;
1343 Route::add_processors (const ProcessorList& others, boost::shared_ptr<Processor> before, ProcessorStreams* err)
1345 /* NOTE: this is intended to be used ONLY when copying
1346 processors from another Route. Hence the subtle
1347 differences between this and ::add_processor()
1350 ProcessorList::iterator loc;
1353 loc = find(_processors.begin(), _processors.end(), before);
1355 /* nothing specified - at end */
1356 loc = _processors.end ();
1359 if (!_session.engine().connected()) {
1363 if (others.empty()) {
1368 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
1369 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
1370 ProcessorState pstate (this);
1372 for (ProcessorList::const_iterator i = others.begin(); i != others.end(); ++i) {
1378 boost::shared_ptr<PluginInsert> pi;
1380 if ((pi = boost::dynamic_pointer_cast<PluginInsert>(*i)) != 0) {
1384 _processors.insert (loc, *i);
1385 (*i)->set_owner (this);
1387 if ((*i)->active()) {
1391 /* Think: does this really need to be called for every processor in the loop? */
1393 if (configure_processors_unlocked (err)) {
1395 configure_processors_unlocked (0); // it worked before we tried to add it ...
1400 (*i)->ActiveChanged.connect_same_thread (*this, boost::bind (&Session::update_latency_compensation, &_session, false));
1403 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
1404 boost::shared_ptr<PluginInsert> pi;
1406 if ((pi = boost::dynamic_pointer_cast<PluginInsert>(*i)) != 0) {
1407 if (pi->has_no_inputs ()) {
1408 _have_internal_generator = true;
1414 _output->set_user_latency (0);
1417 reset_instrument_info ();
1418 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
1419 set_processor_positions ();
1425 Route::placement_range(Placement p, ProcessorList::iterator& start, ProcessorList::iterator& end)
1427 if (p == PreFader) {
1428 start = _processors.begin();
1429 end = find(_processors.begin(), _processors.end(), _amp);
1431 start = find(_processors.begin(), _processors.end(), _amp);
1433 end = _processors.end();
1437 /** Turn off all processors with a given placement
1438 * @param p Placement of processors to disable
1441 Route::disable_processors (Placement p)
1443 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1445 ProcessorList::iterator start, end;
1446 placement_range(p, start, end);
1448 for (ProcessorList::iterator i = start; i != end; ++i) {
1449 (*i)->deactivate ();
1452 _session.set_dirty ();
1455 /** Turn off all redirects
1458 Route::disable_processors ()
1460 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1462 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
1463 (*i)->deactivate ();
1466 _session.set_dirty ();
1469 /** Turn off all redirects with a given placement
1470 * @param p Placement of redirects to disable
1473 Route::disable_plugins (Placement p)
1475 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1477 ProcessorList::iterator start, end;
1478 placement_range(p, start, end);
1480 for (ProcessorList::iterator i = start; i != end; ++i) {
1481 if (boost::dynamic_pointer_cast<PluginInsert> (*i)) {
1482 (*i)->deactivate ();
1486 _session.set_dirty ();
1489 /** Turn off all plugins
1492 Route::disable_plugins ()
1494 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1496 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
1497 if (boost::dynamic_pointer_cast<PluginInsert> (*i)) {
1498 (*i)->deactivate ();
1502 _session.set_dirty ();
1507 Route::ab_plugins (bool forward)
1509 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1513 /* forward = turn off all active redirects, and mark them so that the next time
1514 we go the other way, we will revert them
1517 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
1518 if (!boost::dynamic_pointer_cast<PluginInsert> (*i)) {
1522 if ((*i)->active()) {
1523 (*i)->deactivate ();
1524 (*i)->set_next_ab_is_active (true);
1526 (*i)->set_next_ab_is_active (false);
1532 /* backward = if the redirect was marked to go active on the next ab, do so */
1534 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
1536 if (!boost::dynamic_pointer_cast<PluginInsert> (*i)) {
1540 if ((*i)->get_next_ab_is_active()) {
1543 (*i)->deactivate ();
1548 _session.set_dirty ();
1552 /** Remove processors with a given placement.
1553 * @param p Placement of processors to remove.
1556 Route::clear_processors (Placement p)
1558 if (!_session.engine().connected()) {
1562 bool already_deleting = _session.deletion_in_progress();
1563 if (!already_deleting) {
1564 _session.set_deletion_in_progress();
1568 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
1569 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
1570 ProcessorList new_list;
1571 ProcessorStreams err;
1572 bool seen_amp = false;
1574 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
1580 if ((*i) == _amp || (*i) == _meter || (*i) == _main_outs || (*i) == _delayline || (*i) == _trim) {
1582 /* you can't remove these */
1584 new_list.push_back (*i);
1591 new_list.push_back (*i);
1594 (*i)->drop_references ();
1602 (*i)->drop_references ();
1605 new_list.push_back (*i);
1612 _processors = new_list;
1613 configure_processors_unlocked (&err); // this can't fail
1616 processor_max_streams.reset();
1617 _have_internal_generator = false;
1618 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
1619 set_processor_positions ();
1621 reset_instrument_info ();
1623 if (!already_deleting) {
1624 _session.clear_deletion_in_progress();
1629 Route::remove_processor (boost::shared_ptr<Processor> processor, ProcessorStreams* err, bool need_process_lock)
1631 // TODO once the export point can be configured properly, do something smarter here
1632 if (processor == _capturing_processor) {
1633 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock (), Glib::Threads::NOT_LOCK);
1634 if (need_process_lock) {
1638 _capturing_processor.reset();
1640 if (need_process_lock) {
1645 /* these can never be removed */
1647 if (processor == _amp || processor == _meter || processor == _main_outs || processor == _delayline || processor == _trim) {
1651 if (!_session.engine().connected()) {
1655 processor_max_streams.reset();
1658 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock (), Glib::Threads::NOT_LOCK);
1659 if (need_process_lock) {
1663 /* Caller must hold process lock */
1664 assert (!AudioEngine::instance()->process_lock().trylock());
1666 Glib::Threads::RWLock::WriterLock lm (_processor_lock); // XXX deadlock after export
1668 ProcessorState pstate (this);
1670 ProcessorList::iterator i;
1671 bool removed = false;
1673 for (i = _processors.begin(); i != _processors.end(); ) {
1674 if (*i == processor) {
1676 /* move along, see failure case for configure_processors()
1677 where we may need to reconfigure the processor.
1680 /* stop redirects that send signals to JACK ports
1681 from causing noise as a result of no longer being
1685 boost::shared_ptr<IOProcessor> iop;
1687 if ((iop = boost::dynamic_pointer_cast<IOProcessor> (*i)) != 0) {
1691 i = _processors.erase (i);
1699 _output->set_user_latency (0);
1707 if (configure_processors_unlocked (err)) {
1709 /* we know this will work, because it worked before :) */
1710 configure_processors_unlocked (0);
1714 _have_internal_generator = false;
1716 for (i = _processors.begin(); i != _processors.end(); ++i) {
1717 boost::shared_ptr<PluginInsert> pi;
1719 if ((pi = boost::dynamic_pointer_cast<PluginInsert>(*i)) != 0) {
1720 if (pi->has_no_inputs ()) {
1721 _have_internal_generator = true;
1726 if (need_process_lock) {
1731 reset_instrument_info ();
1732 processor->drop_references ();
1733 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
1734 set_processor_positions ();
1740 Route::remove_processors (const ProcessorList& to_be_deleted, ProcessorStreams* err)
1742 ProcessorList deleted;
1744 if (!_session.engine().connected()) {
1748 processor_max_streams.reset();
1751 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
1752 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
1753 ProcessorState pstate (this);
1755 ProcessorList::iterator i;
1756 boost::shared_ptr<Processor> processor;
1758 for (i = _processors.begin(); i != _processors.end(); ) {
1762 /* these can never be removed */
1764 if (processor == _amp || processor == _meter || processor == _main_outs || processor == _delayline || processor == _trim) {
1769 /* see if its in the list of processors to delete */
1771 if (find (to_be_deleted.begin(), to_be_deleted.end(), processor) == to_be_deleted.end()) {
1776 /* stop IOProcessors that send to JACK ports
1777 from causing noise as a result of no longer being
1781 boost::shared_ptr<IOProcessor> iop;
1783 if ((iop = boost::dynamic_pointer_cast<IOProcessor> (processor)) != 0) {
1787 deleted.push_back (processor);
1788 i = _processors.erase (i);
1791 if (deleted.empty()) {
1792 /* none of those in the requested list were found */
1796 _output->set_user_latency (0);
1798 if (configure_processors_unlocked (err)) {
1800 /* we know this will work, because it worked before :) */
1801 configure_processors_unlocked (0);
1806 _have_internal_generator = false;
1808 for (i = _processors.begin(); i != _processors.end(); ++i) {
1809 boost::shared_ptr<PluginInsert> pi;
1811 if ((pi = boost::dynamic_pointer_cast<PluginInsert>(*i)) != 0) {
1812 if (pi->has_no_inputs ()) {
1813 _have_internal_generator = true;
1820 /* now try to do what we need to so that those that were removed will be deleted */
1822 for (ProcessorList::iterator i = deleted.begin(); i != deleted.end(); ++i) {
1823 (*i)->drop_references ();
1826 reset_instrument_info ();
1827 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
1828 set_processor_positions ();
1834 Route::reset_instrument_info ()
1836 boost::shared_ptr<Processor> instr = the_instrument();
1838 _instrument_info.set_internal_instrument (instr);
1842 /** Caller must hold process lock */
1844 Route::configure_processors (ProcessorStreams* err)
1846 #ifndef PLATFORM_WINDOWS
1847 assert (!AudioEngine::instance()->process_lock().trylock());
1850 if (!_in_configure_processors) {
1851 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
1852 return configure_processors_unlocked (err);
1859 Route::input_streams () const
1861 return _input->n_ports ();
1864 list<pair<ChanCount, ChanCount> >
1865 Route::try_configure_processors (ChanCount in, ProcessorStreams* err)
1867 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1869 return try_configure_processors_unlocked (in, err);
1872 list<pair<ChanCount, ChanCount> >
1873 Route::try_configure_processors_unlocked (ChanCount in, ProcessorStreams* err)
1875 // Check each processor in order to see if we can configure as requested
1877 list<pair<ChanCount, ChanCount> > configuration;
1880 DEBUG_TRACE (DEBUG::Processors, string_compose ("%1: configure processors\n", _name));
1881 DEBUG_TRACE (DEBUG::Processors, "{\n");
1883 for (ProcessorList::iterator p = _processors.begin(); p != _processors.end(); ++p, ++index) {
1885 if ((*p)->can_support_io_configuration(in, out)) {
1886 DEBUG_TRACE (DEBUG::Processors, string_compose ("\t%1 ID=%2 in=%3 out=%4\n",(*p)->name(), (*p)->id(), in, out));
1887 configuration.push_back(make_pair(in, out));
1894 DEBUG_TRACE (DEBUG::Processors, "---- CONFIGURATION FAILED.\n");
1895 DEBUG_TRACE (DEBUG::Processors, string_compose ("---- %1 cannot support in=%2 out=%3\n", (*p)->name(), in, out));
1896 DEBUG_TRACE (DEBUG::Processors, "}\n");
1897 return list<pair<ChanCount, ChanCount> > ();
1901 DEBUG_TRACE (DEBUG::Processors, "}\n");
1903 return configuration;
1906 /** Set the input/output configuration of each processor in the processors list.
1907 * Caller must hold process lock.
1908 * Return 0 on success, otherwise configuration is impossible.
1911 Route::configure_processors_unlocked (ProcessorStreams* err)
1913 #ifndef PLATFORM_WINDOWS
1914 assert (!AudioEngine::instance()->process_lock().trylock());
1917 if (_in_configure_processors) {
1921 /* put invisible processors where they should be */
1922 setup_invisible_processors ();
1924 _in_configure_processors = true;
1926 list<pair<ChanCount, ChanCount> > configuration = try_configure_processors_unlocked (input_streams (), err);
1928 if (configuration.empty ()) {
1929 _in_configure_processors = false;
1934 bool seen_mains_out = false;
1935 processor_out_streams = _input->n_ports();
1936 processor_max_streams.reset();
1938 list< pair<ChanCount,ChanCount> >::iterator c = configuration.begin();
1939 for (ProcessorList::iterator p = _processors.begin(); p != _processors.end(); ++p, ++c) {
1941 if (!(*p)->configure_io(c->first, c->second)) {
1942 DEBUG_TRACE (DEBUG::Processors, string_compose ("%1: configuration failed\n", _name));
1944 processor_max_streams = ChanCount::max(processor_max_streams, c->first);
1945 processor_max_streams = ChanCount::max(processor_max_streams, c->second);
1947 boost::shared_ptr<PluginInsert> pi;
1948 if ((pi = boost::dynamic_pointer_cast<PluginInsert>(*p)) != 0) {
1949 /* plugins connected via Split Match may have more channels.
1950 * route/scratch buffers are needed for all of them*/
1951 processor_max_streams = ChanCount::max(processor_max_streams, pi->input_streams());
1952 processor_max_streams = ChanCount::max(processor_max_streams, pi->natural_input_streams());
1956 if (boost::dynamic_pointer_cast<Delivery> (*p)
1957 && boost::dynamic_pointer_cast<Delivery> (*p)->role() == Delivery::Main) {
1958 /* main delivery will increase port count to match input.
1959 * the Delivery::Main is usually the last processor - followed only by
1962 seen_mains_out = true;
1964 if (!seen_mains_out) {
1965 processor_out_streams = out;
1971 _meter->set_max_channels (processor_max_streams);
1974 /* make sure we have sufficient scratch buffers to cope with the new processor
1977 _session.ensure_buffers (n_process_buffers ());
1979 DEBUG_TRACE (DEBUG::Processors, string_compose ("%1: configuration complete\n", _name));
1981 _in_configure_processors = false;
1985 /** Set all visible processors to a given active state (except Fader, whose state is not changed)
1986 * @param state New active state for those processors.
1989 Route::all_visible_processors_active (bool state)
1991 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
1993 if (_processors.empty()) {
1997 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
1998 if (!(*i)->display_to_user() || boost::dynamic_pointer_cast<Amp> (*i)) {
2005 (*i)->deactivate ();
2009 _session.set_dirty ();
2013 Route::processors_reorder_needs_configure (const ProcessorList& new_order)
2015 /* check if re-order requires re-configuration of any processors
2016 * -> compare channel configuration for all processors
2018 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
2019 ChanCount c = input_streams ();
2021 for (ProcessorList::const_iterator j = new_order.begin(); j != new_order.end(); ++j) {
2023 if (c != (*j)->input_streams()) {
2026 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
2029 if ((*i)->input_streams() != c) {
2032 c = (*i)->output_streams();
2044 __attribute__((annotate("realtime")))
2047 Route::apply_processor_order (const ProcessorList& new_order)
2049 /* need to hold processor_lock; either read or write lock
2050 * and the engine process_lock.
2051 * Due to r/w lock ambiguity we can only assert the latter
2053 assert (!AudioEngine::instance()->process_lock().trylock());
2056 /* "new_order" is an ordered list of processors to be positioned according to "placement".
2057 * NOTE: all processors in "new_order" MUST be marked as display_to_user(). There maybe additional
2058 * processors in the current actual processor list that are hidden. Any visible processors
2059 * in the current list but not in "new_order" will be assumed to be deleted.
2062 /* "as_it_will_be" and "_processors" are lists of shared pointers.
2063 * actual memory usage is small, but insert/erase is not actually rt-safe :(
2064 * (note though that ::processors_reorder_needs_configure() ensured that
2065 * this function will only ever be called from the rt-thread if no processor were removed)
2067 * either way, I can't proove it, but an x-run due to re-order here is less likley
2068 * than an x-run-less 'ardour-silent cycle' both of which effectively "click".
2071 ProcessorList as_it_will_be;
2072 ProcessorList::iterator oiter;
2073 ProcessorList::const_iterator niter;
2075 oiter = _processors.begin();
2076 niter = new_order.begin();
2078 while (niter != new_order.end()) {
2080 /* if the next processor in the old list is invisible (i.e. should not be in the new order)
2081 then append it to the temp list.
2083 Otherwise, see if the next processor in the old list is in the new list. if not,
2084 its been deleted. If its there, append it to the temp list.
2087 if (oiter == _processors.end()) {
2089 /* no more elements in the old list, so just stick the rest of
2090 the new order onto the temp list.
2093 as_it_will_be.insert (as_it_will_be.end(), niter, new_order.end());
2094 while (niter != new_order.end()) {
2101 if (!(*oiter)->display_to_user()) {
2103 as_it_will_be.push_back (*oiter);
2107 /* visible processor: check that its in the new order */
2109 if (find (new_order.begin(), new_order.end(), (*oiter)) == new_order.end()) {
2110 /* deleted: do nothing, shared_ptr<> will clean up */
2112 /* ignore this one, and add the next item from the new order instead */
2113 as_it_will_be.push_back (*niter);
2118 /* now remove from old order - its taken care of no matter what */
2119 oiter = _processors.erase (oiter);
2123 _processors.insert (oiter, as_it_will_be.begin(), as_it_will_be.end());
2125 /* If the meter is in a custom position, find it and make a rough note of its position */
2126 maybe_note_meter_position ();
2130 Route::reorder_processors (const ProcessorList& new_order, ProcessorStreams* err)
2132 // it a change is already queued, wait for it
2133 // (unless engine is stopped. apply immediately and proceed
2134 while (g_atomic_int_get (&_pending_process_reorder)) {
2135 if (!AudioEngine::instance()->running()) {
2136 DEBUG_TRACE (DEBUG::Processors, "offline apply queued processor re-order.\n");
2137 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
2139 apply_processor_order(_pending_processor_order);
2140 setup_invisible_processors ();
2142 g_atomic_int_set (&_pending_process_reorder, 0);
2144 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
2145 set_processor_positions ();
2147 // TODO rather use a semaphore or something.
2148 // but since ::reorder_processors() is called
2149 // from the GUI thread, this is fine..
2154 if (processors_reorder_needs_configure (new_order) || !AudioEngine::instance()->running()) {
2156 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
2157 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
2158 ProcessorState pstate (this);
2160 apply_processor_order (new_order);
2162 if (configure_processors_unlocked (err)) {
2170 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
2171 set_processor_positions ();
2174 DEBUG_TRACE (DEBUG::Processors, "Queue clickless processor re-order.\n");
2175 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
2177 // _pending_processor_order is protected by _processor_lock
2178 _pending_processor_order = new_order;
2179 g_atomic_int_set (&_pending_process_reorder, 1);
2192 Route::get_template()
2194 return state(false);
2198 Route::state(bool full_state)
2200 XMLNode *node = new XMLNode("Route");
2201 ProcessorList::iterator i;
2204 id().print (buf, sizeof (buf));
2205 node->add_property("id", buf);
2206 node->add_property ("name", _name);
2207 node->add_property("default-type", _default_type.to_string());
2210 node->add_property("flags", enum_2_string (_flags));
2213 node->add_property("active", _active?"yes":"no");
2215 boost::to_string (_phase_invert, p);
2216 node->add_property("phase-invert", p);
2217 node->add_property("denormal-protection", _denormal_protection?"yes":"no");
2218 node->add_property("meter-point", enum_2_string (_meter_point));
2220 node->add_property("meter-type", enum_2_string (_meter_type));
2223 node->add_property("route-group", _route_group->name());
2226 snprintf (buf, sizeof (buf), "%d", _order_key);
2227 node->add_property ("order-key", buf);
2228 node->add_property ("self-solo", (_self_solo ? "yes" : "no"));
2229 snprintf (buf, sizeof (buf), "%d", _soloed_by_others_upstream);
2230 node->add_property ("soloed-by-upstream", buf);
2231 snprintf (buf, sizeof (buf), "%d", _soloed_by_others_downstream);
2232 node->add_property ("soloed-by-downstream", buf);
2233 node->add_property ("solo-isolated", solo_isolated() ? "yes" : "no");
2234 node->add_property ("solo-safe", _solo_safe ? "yes" : "no");
2236 node->add_child_nocopy (_input->state (full_state));
2237 node->add_child_nocopy (_output->state (full_state));
2238 node->add_child_nocopy (_solo_control->get_state ());
2239 node->add_child_nocopy (_mute_control->get_state ());
2240 node->add_child_nocopy (_mute_master->get_state ());
2243 node->add_child_nocopy (Automatable::get_automation_xml_state ());
2246 XMLNode* remote_control_node = new XMLNode (X_("RemoteControl"));
2247 snprintf (buf, sizeof (buf), "%d", _remote_control_id);
2248 remote_control_node->add_property (X_("id"), buf);
2249 node->add_child_nocopy (*remote_control_node);
2251 if (_comment.length()) {
2252 XMLNode *cmt = node->add_child ("Comment");
2253 cmt->add_content (_comment);
2257 node->add_child_nocopy (_pannable->state (full_state));
2260 for (i = _processors.begin(); i != _processors.end(); ++i) {
2262 /* template save: do not include internal sends functioning as
2263 aux sends because the chance of the target ID
2264 in the session where this template is used
2267 similarly, do not save listen sends which connect to
2268 the monitor section, because these will always be
2271 boost::shared_ptr<InternalSend> is;
2273 if ((is = boost::dynamic_pointer_cast<InternalSend> (*i)) != 0) {
2274 if (is->role() == Delivery::Listen) {
2279 node->add_child_nocopy((*i)->state (full_state));
2283 node->add_child_copy (*_extra_xml);
2286 if (_custom_meter_position_noted) {
2287 boost::shared_ptr<Processor> after = _processor_after_last_custom_meter.lock ();
2289 after->id().print (buf, sizeof (buf));
2290 node->add_property (X_("processor-after-last-custom-meter"), buf);
2298 Route::set_state (const XMLNode& node, int version)
2300 if (version < 3000) {
2301 return set_state_2X (node, version);
2305 XMLNodeConstIterator niter;
2307 const XMLProperty *prop;
2309 if (node.name() != "Route"){
2310 error << string_compose(_("Bad node sent to Route::set_state() [%1]"), node.name()) << endmsg;
2314 if ((prop = node.property (X_("name"))) != 0) {
2315 Route::set_name (prop->value());
2319 _initial_io_setup = true;
2321 if ((prop = node.property (X_("flags"))) != 0) {
2322 _flags = Flag (string_2_enum (prop->value(), _flags));
2327 if (is_master() || is_monitor() || is_auditioner()) {
2328 _mute_master->set_solo_ignore (true);
2332 /* monitor bus does not get a panner, but if (re)created
2333 via XML, it will already have one by the time we
2334 call ::set_state(). so ... remove it.
2339 /* add all processors (except amp, which is always present) */
2341 nlist = node.children();
2342 XMLNode processor_state (X_("processor_state"));
2344 Stateful::save_extra_xml (node);
2346 for (niter = nlist.begin(); niter != nlist.end(); ++niter){
2350 if (child->name() == IO::state_node_name) {
2351 if ((prop = child->property (X_("direction"))) == 0) {
2355 if (prop->value() == "Input") {
2356 _input->set_state (*child, version);
2357 } else if (prop->value() == "Output") {
2358 _output->set_state (*child, version);
2362 if (child->name() == X_("Processor")) {
2363 processor_state.add_child_copy (*child);
2366 if (child->name() == X_("Pannable")) {
2368 _pannable->set_state (*child, version);
2370 warning << string_compose (_("Pannable state found for route (%1) without a panner!"), name()) << endmsg;
2375 if ((prop = node.property (X_("meter-point"))) != 0) {
2376 MeterPoint mp = MeterPoint (string_2_enum (prop->value (), _meter_point));
2377 set_meter_point (mp, true);
2379 _meter->set_display_to_user (_meter_point == MeterCustom);
2383 if ((prop = node.property (X_("meter-type"))) != 0) {
2384 _meter_type = MeterType (string_2_enum (prop->value (), _meter_type));
2387 _initial_io_setup = false;
2389 set_processor_state (processor_state);
2391 // this looks up the internal instrument in processors
2392 reset_instrument_info();
2394 if ((prop = node.property ("self-solo")) != 0) {
2395 set_self_solo (string_is_affirmative (prop->value()));
2398 if ((prop = node.property ("soloed-by-upstream")) != 0) {
2399 _soloed_by_others_upstream = 0; // needed for mod_.... () to work
2400 mod_solo_by_others_upstream (atoi (prop->value()));
2403 if ((prop = node.property ("soloed-by-downstream")) != 0) {
2404 _soloed_by_others_downstream = 0; // needed for mod_.... () to work
2405 mod_solo_by_others_downstream (atoi (prop->value()));
2408 if ((prop = node.property ("solo-isolated")) != 0) {
2409 set_solo_isolated (string_is_affirmative (prop->value()), this);
2412 if ((prop = node.property ("solo-safe")) != 0) {
2413 set_solo_safe (string_is_affirmative (prop->value()), this);
2416 if ((prop = node.property (X_("phase-invert"))) != 0) {
2417 set_phase_invert (boost::dynamic_bitset<> (prop->value ()));
2420 if ((prop = node.property (X_("denormal-protection"))) != 0) {
2421 set_denormal_protection (string_is_affirmative (prop->value()));
2424 if ((prop = node.property (X_("active"))) != 0) {
2425 bool yn = string_is_affirmative (prop->value());
2426 _active = !yn; // force switch
2427 set_active (yn, this);
2430 if ((prop = node.property (X_("order-key"))) != 0) { // New order key (no separate mixer/editor ordering)
2431 set_order_key (atoi(prop->value()));
2434 if ((prop = node.property (X_("order-keys"))) != 0) { // Deprecated order keys
2438 string::size_type colon, equal;
2439 string remaining = prop->value();
2441 while (remaining.length()) {
2443 if ((equal = remaining.find_first_of ('=')) == string::npos || equal == remaining.length()) {
2444 error << string_compose (_("badly formed order key string in state file! [%1] ... ignored."), remaining)
2447 if (sscanf (remaining.substr (equal+1).c_str(), "%d", &n) != 1) {
2448 error << string_compose (_("badly formed order key string in state file! [%1] ... ignored."), remaining)
2451 string keyname = remaining.substr (0, equal);
2453 if ((keyname == "EditorSort") || (keyname == "editor")) {
2454 cerr << "Setting " << name() << " order key to " << n << " using saved Editor order." << endl;
2460 colon = remaining.find_first_of (':');
2462 if (colon != string::npos) {
2463 remaining = remaining.substr (colon+1);
2470 if ((prop = node.property (X_("processor-after-last-custom-meter"))) != 0) {
2471 PBD::ID id (prop->value ());
2472 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
2473 ProcessorList::const_iterator i = _processors.begin ();
2474 while (i != _processors.end() && (*i)->id() != id) {
2478 if (i != _processors.end ()) {
2479 _processor_after_last_custom_meter = *i;
2480 _custom_meter_position_noted = true;
2484 for (niter = nlist.begin(); niter != nlist.end(); ++niter){
2487 if (child->name() == X_("Comment")) {
2489 /* XXX this is a terrible API design in libxml++ */
2491 XMLNode *cmt = *(child->children().begin());
2492 _comment = cmt->content();
2494 } else if (child->name() == Controllable::xml_node_name && (prop = child->property("name")) != 0) {
2495 if (prop->value() == "solo") {
2496 _solo_control->set_state (*child, version);
2497 } else if (prop->value() == "mute") {
2498 _mute_control->set_state (*child, version);
2501 } else if (child->name() == X_("RemoteControl")) {
2502 if ((prop = child->property (X_("id"))) != 0) {
2504 sscanf (prop->value().c_str(), "%d", &x);
2505 set_remote_control_id_internal (x);
2508 } else if (child->name() == X_("MuteMaster")) {
2509 _mute_master->set_state (*child, version);
2511 } else if (child->name() == Automatable::xml_node_name) {
2512 set_automation_xml_state (*child, Evoral::Parameter(NullAutomation));
2520 Route::set_state_2X (const XMLNode& node, int version)
2522 LocaleGuard lg (X_("C"));
2524 XMLNodeConstIterator niter;
2526 const XMLProperty *prop;
2528 /* 2X things which still remain to be handled:
2534 if (node.name() != "Route") {
2535 error << string_compose(_("Bad node sent to Route::set_state() [%1]"), node.name()) << endmsg;
2539 if ((prop = node.property (X_("flags"))) != 0) {
2540 string f = prop->value ();
2541 boost::replace_all (f, "ControlOut", "MonitorOut");
2542 _flags = Flag (string_2_enum (f, _flags));
2547 if (is_master() || is_monitor() || is_auditioner()) {
2548 _mute_master->set_solo_ignore (true);
2551 if ((prop = node.property (X_("phase-invert"))) != 0) {
2552 boost::dynamic_bitset<> p (_input->n_ports().n_audio ());
2553 if (string_is_affirmative (prop->value ())) {
2556 set_phase_invert (p);
2559 if ((prop = node.property (X_("denormal-protection"))) != 0) {
2560 set_denormal_protection (string_is_affirmative (prop->value()));
2563 if ((prop = node.property (X_("soloed"))) != 0) {
2564 bool yn = string_is_affirmative (prop->value());
2566 /* XXX force reset of solo status */
2568 set_solo (yn, this);
2571 if ((prop = node.property (X_("muted"))) != 0) {
2574 bool muted = string_is_affirmative (prop->value());
2580 if ((prop = node.property (X_("mute-affects-pre-fader"))) != 0) {
2582 if (string_is_affirmative (prop->value())){
2583 mute_point = mute_point + "PreFader";
2588 if ((prop = node.property (X_("mute-affects-post-fader"))) != 0) {
2590 if (string_is_affirmative (prop->value())){
2593 mute_point = mute_point + ",";
2596 mute_point = mute_point + "PostFader";
2601 if ((prop = node.property (X_("mute-affects-control-outs"))) != 0) {
2603 if (string_is_affirmative (prop->value())){
2606 mute_point = mute_point + ",";
2609 mute_point = mute_point + "Listen";
2614 if ((prop = node.property (X_("mute-affects-main-outs"))) != 0) {
2616 if (string_is_affirmative (prop->value())){
2619 mute_point = mute_point + ",";
2622 mute_point = mute_point + "Main";
2626 _mute_master->set_mute_points (mute_point);
2627 _mute_master->set_muted_by_self (true);
2631 if ((prop = node.property (X_("meter-point"))) != 0) {
2632 _meter_point = MeterPoint (string_2_enum (prop->value (), _meter_point));
2635 /* do not carry over edit/mix groups from 2.X because (a) its hard (b) they
2636 don't mean the same thing.
2639 if ((prop = node.property (X_("order-keys"))) != 0) {
2643 string::size_type colon, equal;
2644 string remaining = prop->value();
2646 while (remaining.length()) {
2648 if ((equal = remaining.find_first_of ('=')) == string::npos || equal == remaining.length()) {
2649 error << string_compose (_("badly formed order key string in state file! [%1] ... ignored."), remaining)
2652 if (sscanf (remaining.substr (equal+1).c_str(), "%d", &n) != 1) {
2653 error << string_compose (_("badly formed order key string in state file! [%1] ... ignored."), remaining)
2656 string keyname = remaining.substr (0, equal);
2658 if (keyname == "EditorSort" || keyname == "editor") {
2659 info << string_compose(_("Converting deprecated order key for %1 using Editor order %2"), name (), n) << endmsg;
2665 colon = remaining.find_first_of (':');
2667 if (colon != string::npos) {
2668 remaining = remaining.substr (colon+1);
2677 nlist = node.children ();
2678 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
2682 if (child->name() == IO::state_node_name) {
2684 /* there is a note in IO::set_state_2X() about why we have to call
2688 _input->set_state_2X (*child, version, true);
2689 _output->set_state_2X (*child, version, false);
2691 if ((prop = child->property (X_("name"))) != 0) {
2692 Route::set_name (prop->value ());
2697 if ((prop = child->property (X_("active"))) != 0) {
2698 bool yn = string_is_affirmative (prop->value());
2699 _active = !yn; // force switch
2700 set_active (yn, this);
2703 if ((prop = child->property (X_("gain"))) != 0) {
2706 if (sscanf (prop->value().c_str(), "%f", &val) == 1) {
2707 _amp->gain_control()->set_value (val);
2711 /* Set up Panners in the IO */
2712 XMLNodeList io_nlist = child->children ();
2714 XMLNodeConstIterator io_niter;
2717 for (io_niter = io_nlist.begin(); io_niter != io_nlist.end(); ++io_niter) {
2719 io_child = *io_niter;
2721 if (io_child->name() == X_("Panner")) {
2722 _main_outs->panner_shell()->set_state(*io_child, version);
2723 } else if (io_child->name() == X_("Automation")) {
2724 /* IO's automation is for the fader */
2725 _amp->set_automation_xml_state (*io_child, Evoral::Parameter (GainAutomation));
2731 XMLNodeList redirect_nodes;
2733 for (niter = nlist.begin(); niter != nlist.end(); ++niter){
2737 if (child->name() == X_("Send") || child->name() == X_("Insert")) {
2738 redirect_nodes.push_back(child);
2743 set_processor_state_2X (redirect_nodes, version);
2745 Stateful::save_extra_xml (node);
2747 for (niter = nlist.begin(); niter != nlist.end(); ++niter){
2750 if (child->name() == X_("Comment")) {
2752 /* XXX this is a terrible API design in libxml++ */
2754 XMLNode *cmt = *(child->children().begin());
2755 _comment = cmt->content();
2757 } else if (child->name() == Controllable::xml_node_name && (prop = child->property("name")) != 0) {
2758 if (prop->value() == X_("solo")) {
2759 _solo_control->set_state (*child, version);
2760 } else if (prop->value() == X_("mute")) {
2761 _mute_control->set_state (*child, version);
2764 } else if (child->name() == X_("RemoteControl")) {
2765 if ((prop = child->property (X_("id"))) != 0) {
2767 sscanf (prop->value().c_str(), "%d", &x);
2768 set_remote_control_id_internal (x);
2778 Route::get_processor_state ()
2780 XMLNode* root = new XMLNode (X_("redirects"));
2781 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
2782 root->add_child_nocopy ((*i)->state (true));
2789 Route::set_processor_state_2X (XMLNodeList const & nList, int version)
2791 /* We don't bother removing existing processors not in nList, as this
2792 method will only be called when creating a Route from scratch, not
2793 for undo purposes. Just put processors in at the appropriate place
2797 for (XMLNodeConstIterator i = nList.begin(); i != nList.end(); ++i) {
2798 add_processor_from_xml_2X (**i, version);
2803 Route::set_processor_state (const XMLNode& node)
2805 const XMLNodeList &nlist = node.children();
2806 XMLNodeConstIterator niter;
2807 ProcessorList new_order;
2808 bool must_configure = false;
2810 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
2812 XMLProperty* prop = (*niter)->property ("type");
2814 if (prop->value() == "amp") {
2815 _amp->set_state (**niter, Stateful::current_state_version);
2816 new_order.push_back (_amp);
2817 } else if (prop->value() == "trim") {
2818 _trim->set_state (**niter, Stateful::current_state_version);
2819 new_order.push_back (_trim);
2820 } else if (prop->value() == "meter") {
2821 _meter->set_state (**niter, Stateful::current_state_version);
2822 new_order.push_back (_meter);
2823 } else if (prop->value() == "delay") {
2825 _delayline->set_state (**niter, Stateful::current_state_version);
2826 new_order.push_back (_delayline);
2828 } else if (prop->value() == "main-outs") {
2829 _main_outs->set_state (**niter, Stateful::current_state_version);
2830 } else if (prop->value() == "intreturn") {
2832 _intreturn.reset (new InternalReturn (_session));
2833 must_configure = true;
2835 _intreturn->set_state (**niter, Stateful::current_state_version);
2836 } else if (is_monitor() && prop->value() == "monitor") {
2837 if (!_monitor_control) {
2838 _monitor_control.reset (new MonitorProcessor (_session));
2839 must_configure = true;
2841 _monitor_control->set_state (**niter, Stateful::current_state_version);
2842 } else if (prop->value() == "capture") {
2843 /* CapturingProcessor should never be restored, it's always
2844 added explicitly when needed */
2846 ProcessorList::iterator o;
2848 for (o = _processors.begin(); o != _processors.end(); ++o) {
2849 XMLProperty* id_prop = (*niter)->property(X_("id"));
2850 if (id_prop && (*o)->id() == id_prop->value()) {
2851 (*o)->set_state (**niter, Stateful::current_state_version);
2852 new_order.push_back (*o);
2857 // If the processor (*niter) is not on the route then create it
2859 if (o == _processors.end()) {
2861 boost::shared_ptr<Processor> processor;
2863 if (prop->value() == "intsend") {
2865 processor.reset (new InternalSend (_session, _pannable, _mute_master, boost::dynamic_pointer_cast<ARDOUR::Route>(shared_from_this()), boost::shared_ptr<Route>(), Delivery::Aux, true));
2867 } else if (prop->value() == "ladspa" || prop->value() == "Ladspa" ||
2868 prop->value() == "lv2" ||
2869 prop->value() == "windows-vst" ||
2870 prop->value() == "lxvst" ||
2871 prop->value() == "audiounit") {
2873 if (_session.get_disable_all_loaded_plugins ()) {
2874 processor.reset (new UnknownProcessor (_session, **niter));
2876 processor.reset (new PluginInsert (_session));
2878 } else if (prop->value() == "port") {
2880 processor.reset (new PortInsert (_session, _pannable, _mute_master));
2882 } else if (prop->value() == "send") {
2884 processor.reset (new Send (_session, _pannable, _mute_master, Delivery::Send, true));
2887 error << string_compose(_("unknown Processor type \"%1\"; ignored"), prop->value()) << endmsg;
2891 if (processor->set_state (**niter, Stateful::current_state_version) != 0) {
2892 /* This processor could not be configured. Turn it into a UnknownProcessor */
2893 processor.reset (new UnknownProcessor (_session, **niter));
2896 /* we have to note the monitor send here, otherwise a new one will be created
2897 and the state of this one will be lost.
2899 boost::shared_ptr<InternalSend> isend = boost::dynamic_pointer_cast<InternalSend> (processor);
2900 if (isend && isend->role() == Delivery::Listen) {
2901 _monitor_send = isend;
2904 /* it doesn't matter if invisible processors are added here, as they
2905 will be sorted out by setup_invisible_processors () shortly.
2908 new_order.push_back (processor);
2909 must_configure = true;
2915 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
2916 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
2917 _processors = new_order;
2919 if (must_configure) {
2920 configure_processors_unlocked (0);
2923 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
2925 (*i)->set_owner (this);
2926 (*i)->ActiveChanged.connect_same_thread (*this, boost::bind (&Session::update_latency_compensation, &_session, false));
2928 boost::shared_ptr<PluginInsert> pi;
2930 if ((pi = boost::dynamic_pointer_cast<PluginInsert>(*i)) != 0) {
2931 if (pi->has_no_inputs ()) {
2932 _have_internal_generator = true;
2939 reset_instrument_info ();
2940 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
2941 set_processor_positions ();
2945 Route::curve_reallocate ()
2947 // _gain_automation_curve.finish_resize ();
2948 // _pan_automation_curve.finish_resize ();
2952 Route::silence (framecnt_t nframes)
2954 Glib::Threads::RWLock::ReaderLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
2959 silence_unlocked (nframes);
2963 Route::silence_unlocked (framecnt_t nframes)
2965 /* Must be called with the processor lock held */
2969 _output->silence (nframes);
2971 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
2972 boost::shared_ptr<PluginInsert> pi;
2974 if (!_active && (pi = boost::dynamic_pointer_cast<PluginInsert> (*i)) != 0) {
2975 // skip plugins, they don't need anything when we're not active
2979 (*i)->silence (nframes);
2982 if (nframes == _session.get_block_size()) {
2989 Route::add_internal_return ()
2992 _intreturn.reset (new InternalReturn (_session));
2993 add_processor (_intreturn, PreFader);
2998 Route::add_send_to_internal_return (InternalSend* send)
3000 Glib::Threads::RWLock::ReaderLock rm (_processor_lock);
3002 for (ProcessorList::const_iterator x = _processors.begin(); x != _processors.end(); ++x) {
3003 boost::shared_ptr<InternalReturn> d = boost::dynamic_pointer_cast<InternalReturn>(*x);
3006 return d->add_send (send);
3012 Route::remove_send_from_internal_return (InternalSend* send)
3014 Glib::Threads::RWLock::ReaderLock rm (_processor_lock);
3016 for (ProcessorList::const_iterator x = _processors.begin(); x != _processors.end(); ++x) {
3017 boost::shared_ptr<InternalReturn> d = boost::dynamic_pointer_cast<InternalReturn>(*x);
3020 return d->remove_send (send);
3026 Route::enable_monitor_send ()
3028 /* Caller must hold process lock */
3029 assert (!AudioEngine::instance()->process_lock().trylock());
3031 /* master never sends to monitor section via the normal mechanism */
3032 assert (!is_master ());
3033 assert (!is_monitor ());
3035 /* make sure we have one */
3036 if (!_monitor_send) {
3037 _monitor_send.reset (new InternalSend (_session, _pannable, _mute_master, boost::dynamic_pointer_cast<ARDOUR::Route>(shared_from_this()), _session.monitor_out(), Delivery::Listen));
3038 _monitor_send->set_display_to_user (false);
3042 configure_processors (0);
3045 /** Add an aux send to a route.
3046 * @param route route to send to.
3047 * @param before Processor to insert before, or 0 to insert at the end.
3050 Route::add_aux_send (boost::shared_ptr<Route> route, boost::shared_ptr<Processor> before)
3052 assert (route != _session.monitor_out ());
3055 Glib::Threads::RWLock::ReaderLock rm (_processor_lock);
3057 for (ProcessorList::iterator x = _processors.begin(); x != _processors.end(); ++x) {
3059 boost::shared_ptr<InternalSend> d = boost::dynamic_pointer_cast<InternalSend> (*x);
3061 if (d && d->target_route() == route) {
3062 /* already listening via the specified IO: do nothing */
3070 boost::shared_ptr<InternalSend> listener;
3073 Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
3074 boost::shared_ptr<Pannable> sendpan (new Pannable (_session));
3075 listener.reset (new InternalSend (_session, sendpan, _mute_master, boost::dynamic_pointer_cast<ARDOUR::Route>(shared_from_this()), route, Delivery::Aux));
3078 add_processor (listener, before);
3080 } catch (failed_constructor& err) {
3088 Route::remove_aux_or_listen (boost::shared_ptr<Route> route)
3090 ProcessorStreams err;
3091 ProcessorList::iterator tmp;
3094 Glib::Threads::RWLock::ReaderLock rl(_processor_lock);
3096 /* have to do this early because otherwise processor reconfig
3097 * will put _monitor_send back in the list
3100 if (route == _session.monitor_out()) {
3101 _monitor_send.reset ();
3105 for (ProcessorList::iterator x = _processors.begin(); x != _processors.end(); ++x) {
3107 boost::shared_ptr<InternalSend> d = boost::dynamic_pointer_cast<InternalSend>(*x);
3109 if (d && d->target_route() == route) {
3111 if (remove_processor (*x, &err, false) > 0) {
3117 /* list could have been demolished while we dropped the lock
3120 if (_session.engine().connected()) {
3121 /* i/o processors cannot be removed if the engine is not running
3122 * so don't live-loop in case the engine is N/A or dies
3132 Route::set_comment (string cmt, void *src)
3135 comment_changed (src);
3136 _session.set_dirty ();
3140 Route::add_fed_by (boost::shared_ptr<Route> other, bool via_sends_only)
3142 FeedRecord fr (other, via_sends_only);
3144 pair<FedBy::iterator,bool> result = _fed_by.insert (fr);
3146 if (!result.second) {
3148 /* already a record for "other" - make sure sends-only information is correct */
3149 if (!via_sends_only && result.first->sends_only) {
3150 FeedRecord* frp = const_cast<FeedRecord*>(&(*result.first));
3151 frp->sends_only = false;
3155 return result.second;
3159 Route::clear_fed_by ()
3165 Route::feeds (boost::shared_ptr<Route> other, bool* via_sends_only)
3167 const FedBy& fed_by (other->fed_by());
3169 for (FedBy::const_iterator f = fed_by.begin(); f != fed_by.end(); ++f) {
3170 boost::shared_ptr<Route> sr = f->r.lock();
3172 if (sr && (sr.get() == this)) {
3174 if (via_sends_only) {
3175 *via_sends_only = f->sends_only;
3186 Route::direct_feeds_according_to_reality (boost::shared_ptr<Route> other, bool* via_send_only)
3188 DEBUG_TRACE (DEBUG::Graph, string_compose ("Feeds? %1\n", _name));
3190 if (_output->connected_to (other->input())) {
3191 DEBUG_TRACE (DEBUG::Graph, string_compose ("\tdirect FEEDS %2\n", other->name()));
3192 if (via_send_only) {
3193 *via_send_only = false;
3200 for (ProcessorList::iterator r = _processors.begin(); r != _processors.end(); ++r) {
3202 boost::shared_ptr<IOProcessor> iop;
3204 if ((iop = boost::dynamic_pointer_cast<IOProcessor>(*r)) != 0) {
3205 if (iop->feeds (other)) {
3206 DEBUG_TRACE (DEBUG::Graph, string_compose ("\tIOP %1 does feed %2\n", iop->name(), other->name()));
3207 if (via_send_only) {
3208 *via_send_only = true;
3212 DEBUG_TRACE (DEBUG::Graph, string_compose ("\tIOP %1 does NOT feed %2\n", iop->name(), other->name()));
3215 DEBUG_TRACE (DEBUG::Graph, string_compose ("\tPROC %1 is not an IOP\n", (*r)->name()));
3220 DEBUG_TRACE (DEBUG::Graph, string_compose ("\tdoes NOT feed %1\n", other->name()));
3225 Route::direct_feeds_according_to_graph (boost::shared_ptr<Route> other, bool* via_send_only)
3227 return _session._current_route_graph.has (shared_from_this (), other, via_send_only);
3230 /** Called from the (non-realtime) butler thread when the transport is stopped */
3232 Route::nonrealtime_handle_transport_stopped (bool /*abort_ignored*/, bool /*did_locate*/, bool can_flush_processors)
3234 framepos_t now = _session.transport_frame();
3237 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
3239 Automatable::transport_stopped (now);
3241 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
3243 if (!_have_internal_generator && (Config->get_plugins_stop_with_transport() && can_flush_processors)) {
3247 (*i)->transport_stopped (now);
3251 _roll_delay = _initial_delay;
3255 Route::input_change_handler (IOChange change, void * /*src*/)
3257 bool need_to_queue_solo_change = true;
3259 if ((change.type & IOChange::ConfigurationChanged)) {
3260 /* This is called with the process lock held if change
3261 contains ConfigurationChanged
3263 need_to_queue_solo_change = false;
3264 configure_processors (0);
3265 _phase_invert.resize (_input->n_ports().n_audio ());
3266 io_changed (); /* EMIT SIGNAL */
3269 if (!_input->connected() && _soloed_by_others_upstream) {
3270 if (need_to_queue_solo_change) {
3271 _session.cancel_solo_after_disconnect (shared_from_this(), true);
3273 cancel_solo_after_disconnect (true);
3279 Route::output_change_handler (IOChange change, void * /*src*/)
3281 bool need_to_queue_solo_change = true;
3282 if (_initial_io_setup) {
3286 if ((change.type & IOChange::ConfigurationChanged)) {
3287 /* This is called with the process lock held if change
3288 contains ConfigurationChanged
3290 need_to_queue_solo_change = false;
3291 configure_processors (0);
3294 _session.reset_monitor_section();
3297 io_changed (); /* EMIT SIGNAL */
3300 if (!_output->connected() && _soloed_by_others_downstream) {
3301 if (need_to_queue_solo_change) {
3302 _session.cancel_solo_after_disconnect (shared_from_this(), false);
3304 cancel_solo_after_disconnect (false);
3310 Route::cancel_solo_after_disconnect (bool upstream)
3313 _soloed_by_others_upstream = 0;
3315 _soloed_by_others_downstream = 0;
3317 set_mute_master_solo ();
3318 solo_changed (false, this);
3322 Route::pans_required () const
3324 if (n_outputs().n_audio() < 2) {
3328 return max (n_inputs ().n_audio(), processor_max_streams.n_audio());
3332 Route::no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame, bool session_state_changing)
3334 Glib::Threads::RWLock::ReaderLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
3340 if (n_outputs().n_total() == 0) {
3344 if (!_active || n_inputs() == ChanCount::ZERO) {
3345 silence_unlocked (nframes);
3349 if (session_state_changing) {
3350 if (_session.transport_speed() != 0.0f) {
3351 /* we're rolling but some state is changing (e.g. our diskstream contents)
3352 so we cannot use them. Be silent till this is over.
3354 XXX note the absurdity of ::no_roll() being called when we ARE rolling!
3356 silence_unlocked (nframes);
3359 /* we're really not rolling, so we're either delivery silence or actually
3360 monitoring, both of which are safe to do while session_state_changing is true.
3364 BufferSet& bufs = _session.get_route_buffers (n_process_buffers());
3366 fill_buffers_with_input (bufs, _input, nframes);
3368 if (_meter_point == MeterInput) {
3369 _meter->run (bufs, start_frame, end_frame, nframes, true);
3372 _amp->apply_gain_automation (false);
3373 _trim->apply_gain_automation (false);
3374 passthru (bufs, start_frame, end_frame, nframes, 0);
3380 Route::roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame, int declick, bool& /* need_butler */)
3382 Glib::Threads::RWLock::ReaderLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
3387 if (n_outputs().n_total() == 0) {
3391 if (!_active || n_inputs().n_total() == 0) {
3392 silence_unlocked (nframes);
3396 framepos_t unused = 0;
3398 if ((nframes = check_initial_delay (nframes, unused)) == 0) {
3404 BufferSet& bufs = _session.get_route_buffers (n_process_buffers());
3406 fill_buffers_with_input (bufs, _input, nframes);
3408 if (_meter_point == MeterInput) {
3409 _meter->run (bufs, start_frame, end_frame, nframes, true);
3412 passthru (bufs, start_frame, end_frame, nframes, declick);
3418 Route::silent_roll (pframes_t nframes, framepos_t /*start_frame*/, framepos_t /*end_frame*/, bool& /* need_butler */)
3425 Route::flush_processors ()
3427 /* XXX shouldn't really try to take this lock, since
3428 this is called from the RT audio thread.
3431 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
3433 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
3439 __attribute__((annotate("realtime")))
3442 Route::apply_processor_changes_rt ()
3444 int emissions = EmitNone;
3446 if (_pending_meter_point != _meter_point) {
3447 Glib::Threads::RWLock::WriterLock pwl (_processor_lock, Glib::Threads::TRY_LOCK);
3449 /* meters always have buffers for 'processor_max_streams'
3450 * they can be re-positioned without re-allocation */
3451 if (set_meter_point_unlocked()) {
3452 emissions |= EmitMeterChanged | EmitMeterVisibilityChange;;
3454 emissions |= EmitMeterChanged;
3459 bool changed = false;
3461 if (g_atomic_int_get (&_pending_process_reorder)) {
3462 Glib::Threads::RWLock::WriterLock pwl (_processor_lock, Glib::Threads::TRY_LOCK);
3464 apply_processor_order (_pending_processor_order);
3465 setup_invisible_processors ();
3467 g_atomic_int_set (&_pending_process_reorder, 0);
3468 emissions |= EmitRtProcessorChange;
3472 set_processor_positions ();
3474 if (emissions != 0) {
3475 g_atomic_int_set (&_pending_signals, emissions);
3482 Route::emit_pending_signals ()
3485 int sig = g_atomic_int_and (&_pending_signals, 0);
3486 if (sig & EmitMeterChanged) {
3487 _meter->emit_configuration_changed();
3488 meter_change (); /* EMIT SIGNAL */
3489 if (sig & EmitMeterVisibilityChange) {
3490 processors_changed (RouteProcessorChange (RouteProcessorChange::MeterPointChange, true)); /* EMIT SIGNAL */
3492 processors_changed (RouteProcessorChange (RouteProcessorChange::MeterPointChange, false)); /* EMIT SIGNAL */
3495 if (sig & EmitRtProcessorChange) {
3496 processors_changed (RouteProcessorChange (RouteProcessorChange::RealTimeChange)); /* EMIT SIGNAL */
3501 Route::set_meter_point (MeterPoint p, bool force)
3503 if (_pending_meter_point == p && !force) {
3507 if (force || !AudioEngine::instance()->running()) {
3508 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
3509 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
3510 _pending_meter_point = p;
3511 _meter->emit_configuration_changed();
3512 meter_change (); /* EMIT SIGNAL */
3513 if (set_meter_point_unlocked()) {
3514 processors_changed (RouteProcessorChange (RouteProcessorChange::MeterPointChange, true)); /* EMIT SIGNAL */
3516 processors_changed (RouteProcessorChange (RouteProcessorChange::MeterPointChange, false)); /* EMIT SIGNAL */
3519 _pending_meter_point = p;
3525 __attribute__((annotate("realtime")))
3528 Route::set_meter_point_unlocked ()
3531 /* Caller must hold process and processor write lock */
3532 assert (!AudioEngine::instance()->process_lock().trylock());
3533 Glib::Threads::RWLock::WriterLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
3534 assert (!lm.locked ());
3537 _meter_point = _pending_meter_point;
3539 bool meter_was_visible_to_user = _meter->display_to_user ();
3541 if (!_custom_meter_position_noted) {
3542 maybe_note_meter_position ();
3545 if (_meter_point != MeterCustom) {
3547 _meter->set_display_to_user (false);
3549 setup_invisible_processors ();
3552 _meter->set_display_to_user (true);
3554 /* If we have a previous position for the custom meter, try to put it there */
3555 boost::shared_ptr<Processor> after = _processor_after_last_custom_meter.lock ();
3557 ProcessorList::iterator i = find (_processors.begin(), _processors.end(), after);
3558 if (i != _processors.end ()) {
3559 _processors.remove (_meter);
3560 _processors.insert (i, _meter);
3562 } else {// at end, right before the mains_out/panner
3563 _processors.remove (_meter);
3564 ProcessorList::iterator main = _processors.end();
3565 _processors.insert (--main, _meter);
3569 /* Set up the meter for its new position */
3571 ProcessorList::iterator loc = find (_processors.begin(), _processors.end(), _meter);
3575 if (loc == _processors.begin()) {
3576 m_in = _input->n_ports();
3578 ProcessorList::iterator before = loc;
3580 m_in = (*before)->output_streams ();
3583 _meter->reflect_inputs (m_in);
3585 /* we do not need to reconfigure the processors, because the meter
3586 (a) is always ready to handle processor_max_streams
3587 (b) is always an N-in/N-out processor, and thus moving
3588 it doesn't require any changes to the other processors.
3591 /* these should really be done after releasing the lock
3592 * but all those signals are subscribed to with gui_thread()
3595 return (_meter->display_to_user() != meter_was_visible_to_user);
3599 Route::listen_position_changed ()
3602 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
3603 Glib::Threads::RWLock::WriterLock lm (_processor_lock);
3604 ProcessorState pstate (this);
3606 if (configure_processors_unlocked (0)) {
3608 configure_processors_unlocked (0); // it worked before we tried to add it ...
3613 processors_changed (RouteProcessorChange ()); /* EMIT SIGNAL */
3614 _session.set_dirty ();
3617 boost::shared_ptr<CapturingProcessor>
3618 Route::add_export_point()
3620 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
3621 if (!_capturing_processor) {
3623 Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
3624 Glib::Threads::RWLock::WriterLock lw (_processor_lock);
3626 _capturing_processor.reset (new CapturingProcessor (_session));
3627 _capturing_processor->activate ();
3629 configure_processors_unlocked (0);
3633 return _capturing_processor;
3637 Route::update_signal_latency ()
3639 framecnt_t l = _output->user_latency();
3640 framecnt_t lamp = 0;
3641 bool before_amp = true;
3642 framecnt_t ltrim = 0;
3643 bool before_trim = true;
3645 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
3646 if ((*i)->active ()) {
3647 l += (*i)->signal_latency ();
3652 if ((*i) == _trim) {
3663 DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: internal signal latency = %2\n", _name, l));
3665 // TODO: (lamp - _signal_latency) to sync to output (read-ahed), currently _roll_delay shifts this around
3666 _signal_latency_at_amp_position = lamp;
3667 _signal_latency_at_trim_position = ltrim;
3669 if (_signal_latency != l) {
3670 _signal_latency = l;
3671 signal_latency_changed (); /* EMIT SIGNAL */
3674 return _signal_latency;
3678 Route::set_user_latency (framecnt_t nframes)
3680 _output->set_user_latency (nframes);
3681 _session.update_latency_compensation ();
3685 Route::set_latency_compensation (framecnt_t longest_session_latency)
3687 framecnt_t old = _initial_delay;
3689 if (_signal_latency < longest_session_latency) {
3690 _initial_delay = longest_session_latency - _signal_latency;
3695 DEBUG_TRACE (DEBUG::Latency, string_compose (
3696 "%1: compensate for maximum latency of %2,"
3697 "given own latency of %3, using initial delay of %4\n",
3698 name(), longest_session_latency, _signal_latency, _initial_delay));
3700 if (_initial_delay != old) {
3701 initial_delay_changed (); /* EMIT SIGNAL */
3704 if (_session.transport_stopped()) {
3705 _roll_delay = _initial_delay;
3709 Route::SoloControllable::SoloControllable (std::string name, boost::shared_ptr<Route> r)
3710 : AutomationControl (r->session(),
3711 Evoral::Parameter (SoloAutomation),
3712 ParameterDescriptor(Evoral::Parameter (SoloAutomation)),
3713 boost::shared_ptr<AutomationList>(), name)
3716 boost::shared_ptr<AutomationList> gl(new AutomationList(Evoral::Parameter(SoloAutomation)));
3717 gl->set_interpolation(Evoral::ControlList::Discrete);
3722 Route::SoloControllable::set_value (double val)
3724 const bool bval = ((val >= 0.5) ? true : false);
3726 boost::shared_ptr<RouteList> rl (new RouteList);
3728 boost::shared_ptr<Route> r = _route.lock ();
3735 if (Config->get_solo_control_is_listen_control()) {
3736 _session.set_listen (rl, bval);
3738 _session.set_solo (rl, bval);
3743 Route::SoloControllable::get_value () const
3745 boost::shared_ptr<Route> r = _route.lock ();
3750 if (Config->get_solo_control_is_listen_control()) {
3751 return r->listening_via_monitor() ? GAIN_COEFF_UNITY : GAIN_COEFF_ZERO;
3753 return r->self_soloed() ? GAIN_COEFF_UNITY : GAIN_COEFF_ZERO;
3757 Route::MuteControllable::MuteControllable (std::string name, boost::shared_ptr<Route> r)
3758 : AutomationControl (r->session(),
3759 Evoral::Parameter (MuteAutomation),
3760 ParameterDescriptor (Evoral::Parameter (MuteAutomation)),
3761 boost::shared_ptr<AutomationList>(),
3765 boost::shared_ptr<AutomationList> gl(new AutomationList(Evoral::Parameter(MuteAutomation)));
3766 gl->set_interpolation(Evoral::ControlList::Discrete);
3771 Route::MuteControllable::set_superficial_value(bool muted)
3773 /* Note we can not use AutomationControl::set_value here since it will emit
3774 Changed(), but the value will not be correct to the observer. */
3776 bool to_list = _list && ((AutomationList*)_list.get())->automation_write();
3778 Control::set_double (muted, _session.transport_frame(), to_list);
3782 Route::MuteControllable::set_value (double val)
3784 const bool bval = ((val >= 0.5) ? true : false);
3786 boost::shared_ptr<Route> r = _route.lock ();
3791 if (_list && ((AutomationList*)_list.get())->automation_playback()) {
3792 // Playing back automation, set route mute directly
3793 r->set_mute (bval, this);
3795 // Set from user, queue mute event
3796 boost::shared_ptr<RouteList> rl (new RouteList);
3798 _session.set_mute (rl, bval, Session::rt_cleanup);
3801 // Set superficial/automation value to drive controller (and possibly record)
3802 set_superficial_value(bval);
3806 Route::MuteControllable::get_value () const
3808 if (_list && ((AutomationList*)_list.get())->automation_playback()) {
3809 // Playing back automation, get the value from the list
3810 return AutomationControl::get_value();
3813 // Not playing back automation, get the actual route mute value
3814 boost::shared_ptr<Route> r = _route.lock ();
3815 return (r && r->muted()) ? GAIN_COEFF_UNITY : GAIN_COEFF_ZERO;
3819 Route::set_block_size (pframes_t nframes)
3821 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
3822 (*i)->set_block_size (nframes);
3825 _session.ensure_buffers (n_process_buffers ());
3829 Route::protect_automation ()
3831 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i)
3832 (*i)->protect_automation();
3835 /** @param declick 1 to set a pending declick fade-in,
3836 * -1 to set a pending declick fade-out
3839 Route::set_pending_declick (int declick)
3842 /* this call is not allowed to turn off a pending declick */
3844 _pending_declick = declick;
3847 _pending_declick = 0;
3851 /** Shift automation forwards from a particular place, thereby inserting time.
3852 * Adds undo commands for any shifts that are performed.
3854 * @param pos Position to start shifting from.
3855 * @param frames Amount to shift forwards by.
3859 Route::shift (framepos_t pos, framecnt_t frames)
3861 /* gain automation */
3863 boost::shared_ptr<AutomationControl> gc = _amp->gain_control();
3865 XMLNode &before = gc->alist()->get_state ();
3866 gc->alist()->shift (pos, frames);
3867 XMLNode &after = gc->alist()->get_state ();
3868 _session.add_command (new MementoCommand<AutomationList> (*gc->alist().get(), &before, &after));
3871 /* gain automation */
3873 boost::shared_ptr<AutomationControl> gc = _trim->gain_control();
3875 XMLNode &before = gc->alist()->get_state ();
3876 gc->alist()->shift (pos, frames);
3877 XMLNode &after = gc->alist()->get_state ();
3878 _session.add_command (new MementoCommand<AutomationList> (*gc->alist().get(), &before, &after));
3881 // TODO mute automation ??
3883 /* pan automation */
3885 ControlSet::Controls& c (_pannable->controls());
3887 for (ControlSet::Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
3888 boost::shared_ptr<AutomationControl> pc = boost::dynamic_pointer_cast<AutomationControl> (ci->second);
3890 boost::shared_ptr<AutomationList> al = pc->alist();
3891 XMLNode& before = al->get_state ();
3892 al->shift (pos, frames);
3893 XMLNode& after = al->get_state ();
3894 _session.add_command (new MementoCommand<AutomationList> (*al.get(), &before, &after));
3899 /* redirect automation */
3901 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
3902 for (ProcessorList::iterator i = _processors.begin (); i != _processors.end (); ++i) {
3904 set<Evoral::Parameter> parameters = (*i)->what_can_be_automated();
3906 for (set<Evoral::Parameter>::const_iterator p = parameters.begin (); p != parameters.end (); ++p) {
3907 boost::shared_ptr<AutomationControl> ac = (*i)->automation_control (*p);
3909 boost::shared_ptr<AutomationList> al = ac->alist();
3910 XMLNode &before = al->get_state ();
3911 al->shift (pos, frames);
3912 XMLNode &after = al->get_state ();
3913 _session.add_command (new MementoCommand<AutomationList> (*al.get(), &before, &after));
3922 Route::save_as_template (const string& path, const string& name)
3924 XMLNode& node (state (false));
3927 IO::set_name_in_state (*node.children().front(), name);
3929 tree.set_root (&node);
3930 return tree.write (path.c_str());
3935 Route::set_name (const string& str)
3937 if (str == name()) {
3941 string name = Route::ensure_track_or_route_name (str, _session);
3942 SessionObject::set_name (name);
3944 bool ret = (_input->set_name(name) && _output->set_name(name));
3947 /* rename the main outs. Leave other IO processors
3948 * with whatever name they already have, because its
3949 * just fine as it is (it will not contain the route
3950 * name if its a port insert, port send or port return).
3954 if (_main_outs->set_name (name)) {
3955 /* XXX returning false here is stupid because
3956 we already changed the route name.
3966 /** Set the name of a route in an XML description.
3967 * @param node XML <Route> node to set the name in.
3968 * @param name New name.
3971 Route::set_name_in_state (XMLNode& node, string const & name)
3973 node.add_property (X_("name"), name);
3975 XMLNodeList children = node.children();
3976 for (XMLNodeIterator i = children.begin(); i != children.end(); ++i) {
3978 if ((*i)->name() == X_("IO")) {
3980 IO::set_name_in_state (**i, name);
3982 } else if ((*i)->name() == X_("Processor")) {
3984 XMLProperty* role = (*i)->property (X_("role"));
3985 if (role && role->value() == X_("Main")) {
3986 (*i)->add_property (X_("name"), name);
3989 } else if ((*i)->name() == X_("Diskstream")) {
3991 (*i)->add_property (X_("playlist"), string_compose ("%1.1", name).c_str());
3992 (*i)->add_property (X_("name"), name);
3998 boost::shared_ptr<Send>
3999 Route::internal_send_for (boost::shared_ptr<const Route> target) const
4001 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4003 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
4004 boost::shared_ptr<InternalSend> send;
4006 if ((send = boost::dynamic_pointer_cast<InternalSend>(*i)) != 0) {
4007 if (send->target_route() == target) {
4013 return boost::shared_ptr<Send>();
4016 /** @param c Audio channel index.
4017 * @param yn true to invert phase, otherwise false.
4020 Route::set_phase_invert (uint32_t c, bool yn)
4022 if (_phase_invert[c] != yn) {
4023 _phase_invert[c] = yn;
4024 phase_invert_changed (); /* EMIT SIGNAL */
4025 _session.set_dirty ();
4030 Route::set_phase_invert (boost::dynamic_bitset<> p)
4032 if (_phase_invert != p) {
4034 phase_invert_changed (); /* EMIT SIGNAL */
4035 _session.set_dirty ();
4040 Route::phase_invert (uint32_t c) const
4042 return _phase_invert[c];
4045 boost::dynamic_bitset<>
4046 Route::phase_invert () const
4048 return _phase_invert;
4052 Route::set_denormal_protection (bool yn)
4054 if (_denormal_protection != yn) {
4055 _denormal_protection = yn;
4056 denormal_protection_changed (); /* EMIT SIGNAL */
4061 Route::denormal_protection () const
4063 return _denormal_protection;
4067 Route::set_active (bool yn, void* src)
4069 if (_session.transport_rolling()) {
4073 if (_route_group && src != _route_group && _route_group->is_active() && _route_group->is_route_active()) {
4074 _route_group->foreach_route (boost::bind (&Route::set_active, _1, yn, _route_group));
4078 if (_active != yn) {
4080 _input->set_active (yn);
4081 _output->set_active (yn);
4082 active_changed (); // EMIT SIGNAL
4083 _session.set_dirty ();
4087 boost::shared_ptr<Pannable>
4088 Route::pannable() const
4093 boost::shared_ptr<Panner>
4094 Route::panner() const
4097 return _main_outs->panner_shell()->panner();
4100 boost::shared_ptr<PannerShell>
4101 Route::panner_shell() const
4103 return _main_outs->panner_shell();
4106 boost::shared_ptr<AutomationControl>
4107 Route::gain_control() const
4109 return _amp->gain_control();
4112 boost::shared_ptr<AutomationControl>
4113 Route::get_control (const Evoral::Parameter& param)
4115 /* either we own the control or .... */
4117 boost::shared_ptr<AutomationControl> c = boost::dynamic_pointer_cast<AutomationControl>(control (param));
4121 /* maybe one of our processors does or ... */
4123 Glib::Threads::RWLock::ReaderLock rm (_processor_lock);
4124 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
4125 if ((c = boost::dynamic_pointer_cast<AutomationControl>((*i)->control (param))) != 0) {
4133 /* nobody does so we'll make a new one */
4135 c = boost::dynamic_pointer_cast<AutomationControl>(control_factory(param));
4142 boost::shared_ptr<Processor>
4143 Route::nth_plugin (uint32_t n)
4145 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4146 ProcessorList::iterator i;
4148 for (i = _processors.begin(); i != _processors.end(); ++i) {
4149 if (boost::dynamic_pointer_cast<PluginInsert> (*i)) {
4156 return boost::shared_ptr<Processor> ();
4159 boost::shared_ptr<Processor>
4160 Route::nth_send (uint32_t n)
4162 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4163 ProcessorList::iterator i;
4165 for (i = _processors.begin(); i != _processors.end(); ++i) {
4166 if (boost::dynamic_pointer_cast<Send> (*i)) {
4173 return boost::shared_ptr<Processor> ();
4177 Route::has_io_processor_named (const string& name)
4179 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4180 ProcessorList::iterator i;
4182 for (i = _processors.begin(); i != _processors.end(); ++i) {
4183 if (boost::dynamic_pointer_cast<Send> (*i) ||
4184 boost::dynamic_pointer_cast<PortInsert> (*i)) {
4185 if ((*i)->name() == name) {
4194 MuteMaster::MutePoint
4195 Route::mute_points () const
4197 return _mute_master->mute_points ();
4201 Route::set_processor_positions ()
4203 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4205 bool had_amp = false;
4206 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
4207 (*i)->set_pre_fader (!had_amp);
4214 /** Called when there is a proposed change to the input port count */
4216 Route::input_port_count_changing (ChanCount to)
4218 list<pair<ChanCount, ChanCount> > c = try_configure_processors (to, 0);
4220 /* The processors cannot be configured with the new input arrangement, so
4226 /* The change is ok */
4230 /** Called when there is a proposed change to the output port count */
4232 Route::output_port_count_changing (ChanCount to)
4234 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
4235 if (processor_out_streams.get(*t) > to.get(*t)) {
4239 /* The change is ok */
4244 Route::unknown_processors () const
4248 if (_session.get_disable_all_loaded_plugins ()) {
4249 // Do not list "missing plugins" if they are explicitly disabled
4253 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4254 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
4255 if (boost::dynamic_pointer_cast<UnknownProcessor const> (*i)) {
4256 p.push_back ((*i)->name ());
4265 Route::update_port_latencies (PortSet& from, PortSet& to, bool playback, framecnt_t our_latency) const
4267 /* we assume that all our input ports feed all our output ports. its not
4268 universally true, but the alternative is way too corner-case to worry about.
4271 LatencyRange all_connections;
4274 all_connections.min = 0;
4275 all_connections.max = 0;
4277 all_connections.min = ~((pframes_t) 0);
4278 all_connections.max = 0;
4280 /* iterate over all "from" ports and determine the latency range for all of their
4281 connections to the "outside" (outside of this Route).
4284 for (PortSet::iterator p = from.begin(); p != from.end(); ++p) {
4288 p->get_connected_latency_range (range, playback);
4290 all_connections.min = min (all_connections.min, range.min);
4291 all_connections.max = max (all_connections.max, range.max);
4295 /* set the "from" port latencies to the max/min range of all their connections */
4297 for (PortSet::iterator p = from.begin(); p != from.end(); ++p) {
4298 p->set_private_latency_range (all_connections, playback);
4301 /* set the ports "in the direction of the flow" to the same value as above plus our own signal latency */
4303 all_connections.min += our_latency;
4304 all_connections.max += our_latency;
4306 for (PortSet::iterator p = to.begin(); p != to.end(); ++p) {
4307 p->set_private_latency_range (all_connections, playback);
4310 return all_connections.max;
4314 Route::set_private_port_latencies (bool playback) const
4316 framecnt_t own_latency = 0;
4318 /* Processor list not protected by lock: MUST BE CALLED FROM PROCESS THREAD
4319 OR LATENCY CALLBACK.
4321 This is called (early) from the latency callback. It computes the REAL
4322 latency associated with each port and stores the result as the "private"
4323 latency of the port. A later call to Route::set_public_port_latencies()
4324 sets all ports to the same value to reflect the fact that we do latency
4325 compensation and so all signals are delayed by the same amount as they
4326 flow through ardour.
4329 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
4330 if ((*i)->active ()) {
4331 own_latency += (*i)->signal_latency ();
4336 /* playback: propagate latency from "outside the route" to outputs to inputs */
4337 return update_port_latencies (_output->ports (), _input->ports (), true, own_latency);
4339 /* capture: propagate latency from "outside the route" to inputs to outputs */
4340 return update_port_latencies (_input->ports (), _output->ports (), false, own_latency);
4345 Route::set_public_port_latencies (framecnt_t value, bool playback) const
4347 /* this is called to set the JACK-visible port latencies, which take
4348 latency compensation into account.
4357 const PortSet& ports (_input->ports());
4358 for (PortSet::const_iterator p = ports.begin(); p != ports.end(); ++p) {
4359 p->set_public_latency_range (range, playback);
4364 const PortSet& ports (_output->ports());
4365 for (PortSet::const_iterator p = ports.begin(); p != ports.end(); ++p) {
4366 p->set_public_latency_range (range, playback);
4371 /** Put the invisible processors in the right place in _processors.
4372 * Must be called with a writer lock on _processor_lock held.
4375 __attribute__((annotate("realtime")))
4378 Route::setup_invisible_processors ()
4381 Glib::Threads::RWLock::WriterLock lm (_processor_lock, Glib::Threads::TRY_LOCK);
4382 assert (!lm.locked ());
4386 /* too early to be doing this stuff */
4390 /* we'll build this new list here and then use it
4392 * TODO put the ProcessorList is on the stack for RT-safety.
4395 ProcessorList new_processors;
4397 /* find visible processors */
4399 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
4400 if ((*i)->display_to_user ()) {
4401 new_processors.push_back (*i);
4407 ProcessorList::iterator amp = new_processors.begin ();
4408 while (amp != new_processors.end() && *amp != _amp) {
4412 assert (amp != new_processors.end ());
4414 /* and the processor after the amp */
4416 ProcessorList::iterator after_amp = amp;
4422 switch (_meter_point) {
4424 assert (!_meter->display_to_user ());
4425 new_processors.push_front (_meter);
4428 assert (!_meter->display_to_user ());
4429 new_processors.insert (amp, _meter);
4431 case MeterPostFader:
4432 /* do nothing here */
4435 /* do nothing here */
4438 /* the meter is visible, so we don't touch it here */
4445 assert (_main_outs);
4446 assert (!_main_outs->display_to_user ());
4447 new_processors.push_back (_main_outs);
4449 /* iterator for the main outs */
4451 ProcessorList::iterator main = new_processors.end();
4454 /* OUTPUT METERING */
4456 if (_meter && (_meter_point == MeterOutput || _meter_point == MeterPostFader)) {
4457 assert (!_meter->display_to_user ());
4459 /* add the processor just before or just after the main outs */
4461 ProcessorList::iterator meter_point = main;
4463 if (_meter_point == MeterOutput) {
4466 new_processors.insert (meter_point, _meter);
4471 if (_monitor_send && !is_monitor ()) {
4472 assert (!_monitor_send->display_to_user ());
4473 if (Config->get_solo_control_is_listen_control()) {
4474 switch (Config->get_listen_position ()) {
4475 case PreFaderListen:
4476 switch (Config->get_pfl_position ()) {
4477 case PFLFromBeforeProcessors:
4478 new_processors.push_front (_monitor_send);
4480 case PFLFromAfterProcessors:
4481 new_processors.insert (amp, _monitor_send);
4484 _monitor_send->set_can_pan (false);
4486 case AfterFaderListen:
4487 switch (Config->get_afl_position ()) {
4488 case AFLFromBeforeProcessors:
4489 new_processors.insert (after_amp, _monitor_send);
4491 case AFLFromAfterProcessors:
4492 new_processors.insert (new_processors.end(), _monitor_send);
4495 _monitor_send->set_can_pan (true);
4499 new_processors.insert (new_processors.end(), _monitor_send);
4500 _monitor_send->set_can_pan (false);
4504 #if 0 // not used - just yet
4505 if (!is_master() && !is_monitor() && !is_auditioner()) {
4506 new_processors.push_front (_delayline);
4510 /* MONITOR CONTROL */
4512 if (_monitor_control && is_monitor ()) {
4513 assert (!_monitor_control->display_to_user ());
4514 new_processors.push_front (_monitor_control);
4517 /* INTERNAL RETURN */
4519 /* doing this here means that any monitor control will come just after
4524 assert (!_intreturn->display_to_user ());
4525 new_processors.push_front (_intreturn);
4528 if (_trim && _trim->active()) {
4529 assert (!_trim->display_to_user ());
4530 new_processors.push_front (_trim);
4532 /* EXPORT PROCESSOR */
4534 if (_capturing_processor) {
4535 assert (!_capturing_processor->display_to_user ());
4536 new_processors.push_front (_capturing_processor);
4539 _processors = new_processors;
4541 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
4542 if (!(*i)->display_to_user () && !(*i)->active () && (*i) != _monitor_send) {
4547 DEBUG_TRACE (DEBUG::Processors, string_compose ("%1: setup_invisible_processors\n", _name));
4548 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
4549 DEBUG_TRACE (DEBUG::Processors, string_compose ("\t%1\n", (*i)->name ()));
4556 Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
4557 Glib::Threads::RWLock::ReaderLock lp (_processor_lock);
4561 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
4562 boost::shared_ptr<Delivery> d = boost::dynamic_pointer_cast<Delivery>(*i);
4569 /** If the meter point is `Custom', make a note of where the meter is.
4570 * This is so that if the meter point is subsequently set to something else,
4571 * and then back to custom, we can put the meter back where it was last time
4572 * custom was enabled.
4574 * Must be called with the _processor_lock held.
4577 Route::maybe_note_meter_position ()
4579 if (_meter_point != MeterCustom) {
4583 _custom_meter_position_noted = true;
4584 /* custom meter points range from after trim to before panner/main_outs
4585 * this is a limitation by the current processor UI
4587 bool seen_trim = false;
4588 _processor_after_last_custom_meter.reset();
4589 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
4590 if ((*i) == _trim) {
4593 if ((*i) == _main_outs) {
4594 _processor_after_last_custom_meter = *i;
4597 if (boost::dynamic_pointer_cast<PeakMeter> (*i)) {
4599 _processor_after_last_custom_meter = _trim;
4601 ProcessorList::iterator j = i;
4603 assert(j != _processors.end ()); // main_outs should be before
4604 _processor_after_last_custom_meter = *j;
4609 assert(_processor_after_last_custom_meter.lock());
4612 boost::shared_ptr<Processor>
4613 Route::processor_by_id (PBD::ID id) const
4615 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4616 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
4617 if ((*i)->id() == id) {
4622 return boost::shared_ptr<Processor> ();
4625 /** @return the monitoring state, or in other words what data we are pushing
4626 * into the route (data from the inputs, data from disk or silence)
4629 Route::monitoring_state () const
4631 return MonitoringInput;
4634 /** @return what we should be metering; either the data coming from the input
4635 * IO or the data that is flowing through the route.
4638 Route::metering_state () const
4640 return MeteringRoute;
4644 Route::has_external_redirects () const
4646 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
4648 /* ignore inactive processors and obviously ignore the main
4649 * outs since everything has them and we don't care.
4652 if ((*i)->active() && (*i) != _main_outs && (*i)->does_routing()) {
4660 boost::shared_ptr<Processor>
4661 Route::the_instrument () const
4663 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4664 return the_instrument_unlocked ();
4667 boost::shared_ptr<Processor>
4668 Route::the_instrument_unlocked () const
4670 for (ProcessorList::const_iterator i = _processors.begin(); i != _processors.end(); ++i) {
4671 if (boost::dynamic_pointer_cast<PluginInsert>(*i)) {
4672 if ((*i)->input_streams().n_midi() > 0 &&
4673 (*i)->output_streams().n_audio() > 0) {
4678 return boost::shared_ptr<Processor>();
4684 Route::non_realtime_locate (framepos_t pos)
4687 _pannable->transport_located (pos);
4690 if (_delayline.get()) {
4691 _delayline.get()->flush();
4695 //Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
4696 Glib::Threads::RWLock::ReaderLock lm (_processor_lock);
4698 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
4699 (*i)->transport_located (pos);
4702 _roll_delay = _initial_delay;
4706 Route::fill_buffers_with_input (BufferSet& bufs, boost::shared_ptr<IO> io, pframes_t nframes)
4713 * We don't currently mix MIDI input together, so we don't need the
4714 * complex logic of the audio case.
4717 n_buffers = bufs.count().n_midi ();
4719 for (i = 0; i < n_buffers; ++i) {
4721 boost::shared_ptr<MidiPort> source_port = io->midi (i);
4722 MidiBuffer& buf (bufs.get_midi (i));
4725 buf.copy (source_port->get_midi_buffer(nframes));
4727 buf.silence (nframes);
4733 n_buffers = bufs.count().n_audio();
4735 size_t n_ports = io->n_ports().n_audio();
4736 float scaling = 1.0f;
4738 if (n_ports > n_buffers) {
4739 scaling = ((float) n_buffers) / n_ports;
4742 for (i = 0; i < n_ports; ++i) {
4744 /* if there are more ports than buffers, map them onto buffers
4745 * in a round-robin fashion
4748 boost::shared_ptr<AudioPort> source_port = io->audio (i);
4749 AudioBuffer& buf (bufs.get_audio (i%n_buffers));
4752 if (i < n_buffers) {
4754 /* first time through just copy a channel into
4758 buf.read_from (source_port->get_audio_buffer (nframes), nframes);
4760 if (scaling != 1.0f) {
4761 buf.apply_gain (scaling, nframes);
4766 /* on subsequent times around, merge data from
4767 * the port with what is already there
4770 if (scaling != 1.0f) {
4771 buf.accumulate_with_gain_from (source_port->get_audio_buffer (nframes), nframes, 0, scaling);
4773 buf.accumulate_from (source_port->get_audio_buffer (nframes), nframes);
4778 /* silence any remaining buffers */
4780 for (; i < n_buffers; ++i) {
4781 AudioBuffer& buf (bufs.get_audio (i));
4782 buf.silence (nframes);
4785 /* establish the initial setup of the buffer set, reflecting what was
4786 copied into it. unless, of course, we are the auditioner, in which
4787 case nothing was fed into it from the inputs at all.
4790 if (!is_auditioner()) {
4791 bufs.set_count (io->n_ports());