2 Copyright (C) 2006 Paul Davis
3 By Dave Robillard, 2006
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include <pbd/error.h>
20 #include <sigc++/retype.h>
21 #include <sigc++/retype_return.h>
22 #include <sigc++/bind.h>
24 #include <pbd/enumwriter.h>
26 #include <ardour/midi_track.h>
27 #include <ardour/midi_diskstream.h>
28 #include <ardour/session.h>
29 #include <ardour/io_processor.h>
30 #include <ardour/midi_region.h>
31 #include <ardour/midi_source.h>
32 #include <ardour/route_group_specialized.h>
33 #include <ardour/processor.h>
34 #include <ardour/midi_playlist.h>
35 #include <ardour/panner.h>
36 #include <ardour/utils.h>
37 #include <ardour/buffer_set.h>
38 #include <ardour/meter.h>
39 #include <ardour/midi_events.h>
44 using namespace ARDOUR;
47 MidiTrack::MidiTrack (Session& sess, string name, Route::Flag flag, TrackMode mode)
48 : Track (sess, name, flag, mode, DataType::MIDI)
49 , _immediate_events(1024) // FIXME: size?
51 MidiDiskstream::Flag dflags = MidiDiskstream::Flag (0);
53 if (_flags & Hidden) {
54 dflags = MidiDiskstream::Flag (dflags | MidiDiskstream::Hidden);
56 dflags = MidiDiskstream::Flag (dflags | MidiDiskstream::Recordable);
59 assert(mode != Destructive);
61 boost::shared_ptr<MidiDiskstream> ds (new MidiDiskstream (_session, name, dflags));
62 _session.add_diskstream (ds);
64 set_diskstream (boost::dynamic_pointer_cast<MidiDiskstream> (ds));
67 _freeze_record.state = NoFreeze;
68 _saved_meter_point = _meter_point;
71 set_input_minimum(ChanCount(DataType::MIDI, 1));
72 set_input_maximum(ChanCount(DataType::MIDI, 1));
73 set_output_minimum(ChanCount(DataType::MIDI, 1));
74 set_output_maximum(ChanCount(DataType::MIDI, 1));
77 MidiTrack::MidiTrack (Session& sess, const XMLNode& node)
79 , _immediate_events(1024) // FIXME: size?
81 _set_state(node, false);
83 set_input_minimum(ChanCount(DataType::MIDI, 1));
84 set_input_maximum(ChanCount(DataType::MIDI, 1));
85 set_output_minimum(ChanCount(DataType::MIDI, 1));
86 set_output_maximum(ChanCount(DataType::MIDI, 1));
89 MidiTrack::~MidiTrack ()
95 MidiTrack::set_diskstream (boost::shared_ptr<MidiDiskstream> ds)
98 _diskstream->set_io (*this);
99 _diskstream->set_destructive (_mode == Destructive);
101 _diskstream->set_record_enabled (false);
102 //_diskstream->monitor_input (false);
104 ic_connection.disconnect();
105 ic_connection = input_changed.connect (mem_fun (*_diskstream, &MidiDiskstream::handle_input_change));
107 DiskstreamChanged (); /* EMIT SIGNAL */
113 MidiTrack::use_diskstream (string name)
115 boost::shared_ptr<MidiDiskstream> dstream;
117 if ((dstream = boost::dynamic_pointer_cast<MidiDiskstream>(_session.diskstream_by_name (name))) == 0) {
118 error << string_compose(_("MidiTrack: midi diskstream \"%1\" not known by session"), name) << endmsg;
122 return set_diskstream (dstream);
126 MidiTrack::use_diskstream (const PBD::ID& id)
128 boost::shared_ptr<MidiDiskstream> dstream;
130 if ((dstream = boost::dynamic_pointer_cast<MidiDiskstream> (_session.diskstream_by_id (id))) == 0) {
131 error << string_compose(_("MidiTrack: midi diskstream \"%1\" not known by session"), id) << endmsg;
135 return set_diskstream (dstream);
138 boost::shared_ptr<MidiDiskstream>
139 MidiTrack::midi_diskstream() const
141 return boost::dynamic_pointer_cast<MidiDiskstream>(_diskstream);
145 MidiTrack::set_state (const XMLNode& node)
147 return _set_state (node, true);
151 MidiTrack::_set_state (const XMLNode& node, bool call_base)
153 const XMLProperty *prop;
154 XMLNodeConstIterator iter;
156 if (Route::_set_state (node, call_base)) {
160 if ((prop = node.property (X_("mode"))) != 0) {
161 _mode = TrackMode (string_2_enum (prop->value(), _mode));
166 if ((prop = node.property ("diskstream-id")) == 0) {
168 /* some old sessions use the diskstream name rather than the ID */
170 if ((prop = node.property ("diskstream")) == 0) {
171 fatal << _("programming error: MidiTrack given state without diskstream!") << endmsg;
176 if (use_diskstream (prop->value())) {
182 PBD::ID id (prop->value());
184 if (use_diskstream (id)) {
191 XMLNodeConstIterator niter;
194 nlist = node.children();
195 for (niter = nlist.begin(); niter != nlist.end(); ++niter){
198 if (child->name() == X_("recenable")) {
199 _rec_enable_control->set_state (*child);
200 _session.add_controllable (_rec_enable_control);
204 pending_state = const_cast<XMLNode*> (&node);
206 _session.StateReady.connect (mem_fun (*this, &MidiTrack::set_state_part_two));
212 MidiTrack::state(bool full_state)
214 XMLNode& root (Route::state(full_state));
215 XMLNode* freeze_node;
218 if (_freeze_record.playlist) {
221 freeze_node = new XMLNode (X_("freeze-info"));
222 freeze_node->add_property ("playlist", _freeze_record.playlist->name());
223 freeze_node->add_property ("state", enum_2_string (_freeze_record.state));
225 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
226 inode = new XMLNode (X_("processor"));
227 (*i)->id.print (buf, sizeof(buf));
228 inode->add_property (X_("id"), buf);
229 inode->add_child_copy ((*i)->state);
231 freeze_node->add_child_nocopy (*inode);
234 root.add_child_nocopy (*freeze_node);
237 /* Alignment: act as a proxy for the diskstream */
239 XMLNode* align_node = new XMLNode (X_("alignment"));
240 AlignStyle as = _diskstream->alignment_style ();
241 align_node->add_property (X_("style"), enum_2_string (as));
242 root.add_child_nocopy (*align_node);
244 root.add_property (X_("mode"), enum_2_string (_mode));
246 /* we don't return diskstream state because we don't
247 own the diskstream exclusively. control of the diskstream
248 state is ceded to the Session, even if we create the
252 _diskstream->id().print (buf, sizeof(buf));
253 root.add_property ("diskstream-id", buf);
255 root.add_child_nocopy (_rec_enable_control->get_state());
261 MidiTrack::set_state_part_two ()
265 LocaleGuard lg (X_("POSIX"));
267 /* This is called after all session state has been restored but before
268 have been made ports and connections are established.
271 if (pending_state == 0) {
275 if ((fnode = find_named_node (*pending_state, X_("freeze-info"))) != 0) {
278 _freeze_record.have_mementos = false;
279 _freeze_record.state = Frozen;
281 for (vector<FreezeRecordProcessorInfo*>::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) {
284 _freeze_record.processor_info.clear ();
286 if ((prop = fnode->property (X_("playlist"))) != 0) {
287 boost::shared_ptr<Playlist> pl = _session.playlist_by_name (prop->value());
289 _freeze_record.playlist = boost::dynamic_pointer_cast<MidiPlaylist> (pl);
291 _freeze_record.playlist.reset();
292 _freeze_record.state = NoFreeze;
297 if ((prop = fnode->property (X_("state"))) != 0) {
298 _freeze_record.state = FreezeState (string_2_enum (prop->value(), _freeze_record.state));
301 XMLNodeConstIterator citer;
302 XMLNodeList clist = fnode->children();
304 for (citer = clist.begin(); citer != clist.end(); ++citer) {
305 if ((*citer)->name() != X_("processor")) {
309 if ((prop = (*citer)->property (X_("id"))) == 0) {
313 FreezeRecordProcessorInfo* frii = new FreezeRecordProcessorInfo (*((*citer)->children().front()),
314 boost::shared_ptr<Processor>());
315 frii->id = prop->value ();
316 _freeze_record.processor_info.push_back (frii);
320 /* Alignment: act as a proxy for the diskstream */
322 if ((fnode = find_named_node (*pending_state, X_("alignment"))) != 0) {
324 if ((prop = fnode->property (X_("style"))) != 0) {
326 /* fix for older sessions from before EnumWriter */
330 if (prop->value() == "capture") {
331 pstr = "CaptureTime";
332 } else if (prop->value() == "existing") {
333 pstr = "ExistingMaterial";
335 pstr = prop->value();
338 AlignStyle as = AlignStyle (string_2_enum (pstr, as));
339 _diskstream->set_persistent_align_style (as);
346 MidiTrack::no_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset,
347 bool session_state_changing, bool can_record, bool rec_monitors_input)
349 if (n_outputs().n_midi() == 0) {
355 silence (nframes, offset);
359 if (session_state_changing) {
361 /* XXX is this safe to do against transport state changes? */
363 passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
367 midi_diskstream()->check_record_status (start_frame, nframes, can_record);
371 if (_have_internal_generator) {
372 /* since the instrument has no input streams,
373 there is no reason to send any signal
379 if (Config->get_auto_input()) {
380 if (Config->get_monitoring_model() == SoftwareMonitoring) {
381 send_silence = false;
386 if (_diskstream->record_enabled()) {
387 if (Config->get_monitoring_model() == SoftwareMonitoring) {
388 send_silence = false;
398 apply_gain_automation = false;
402 /* if we're sending silence, but we want the meters to show levels for the signal,
406 if (_have_internal_generator) {
407 passthru_silence (start_frame, end_frame, nframes, offset, 0, true);
409 if (_meter_point == MeterInput) {
410 just_meter_input (start_frame, end_frame, nframes, offset);
412 passthru_silence (start_frame, end_frame, nframes, offset, 0, false);
417 /* we're sending signal, but we may still want to meter the input.
420 passthru (start_frame, end_frame, nframes, offset, 0, (_meter_point == MeterInput));
427 MidiTrack::roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset, int declick,
428 bool can_record, bool rec_monitors_input)
431 boost::shared_ptr<MidiDiskstream> diskstream = midi_diskstream();
434 Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK);
436 // automation snapshot can also be called from the non-rt context
437 // and it uses the redirect list, so we take the lock out here
438 automation_snapshot (start_frame);
442 if (n_outputs().n_total() == 0 && _processors.empty()) {
447 silence (nframes, offset);
451 nframes_t transport_frame = _session.transport_frame();
453 if ((nframes = check_initial_delay (nframes, offset, transport_frame)) == 0) {
454 /* need to do this so that the diskstream sets its
455 playback distance to zero, thus causing diskstream::commit
458 return diskstream->process (transport_frame, 0, 0, can_record, rec_monitors_input);
463 if ((dret = diskstream->process (transport_frame, nframes, offset, can_record, rec_monitors_input)) != 0) {
465 silence (nframes, offset);
470 /* special condition applies */
472 if (_meter_point == MeterInput) {
473 just_meter_input (start_frame, end_frame, nframes, offset);
476 if (diskstream->record_enabled() && !can_record && !Config->get_auto_input()) {
478 /* not actually recording, but we want to hear the input material anyway,
479 at least potentially (depending on monitoring options)
482 passthru (start_frame, end_frame, nframes, offset, 0, true);
486 XXX is it true that the earlier test on n_outputs()
487 means that we can avoid checking it again here? i think
488 so, because changing the i/o configuration of an IO
489 requires holding the AudioEngine lock, which we hold
490 while in the process() tree.
494 /* copy the diskstream data to all output buffers */
496 //const size_t limit = n_process_buffers().n_audio();
497 BufferSet& bufs = _session.get_scratch_buffers (n_process_buffers());
499 diskstream->get_playback(bufs.get_midi(0), start_frame, end_frame);
501 process_output_buffers (bufs, start_frame, end_frame, nframes, offset,
502 (!_session.get_record_enabled() || !Config->get_do_not_record_plugins()), declick, (_meter_point != MeterInput));
510 MidiTrack::silent_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, nframes_t offset,
511 bool can_record, bool rec_monitors_input)
513 if (n_outputs().n_midi() == 0 && _processors.empty()) {
518 silence (nframes, offset);
523 apply_gain_automation = false;
525 silence (nframes, offset);
527 return midi_diskstream()->process (_session.transport_frame() + offset, nframes, offset, can_record, rec_monitors_input);
531 MidiTrack::process_output_buffers (BufferSet& bufs,
532 nframes_t start_frame, nframes_t end_frame,
533 nframes_t nframes, nframes_t offset, bool with_processors, int declick,
536 /* There's no such thing as a MIDI bus for the time being.
537 * We'll do all the MIDI route work here for now, but the long-term goal is to have
538 * Route::process_output_buffers handle everything */
540 if (meter && (_meter_point == MeterInput || _meter_point == MeterPreFader)) {
541 _meter->run(bufs, start_frame, end_frame, nframes, offset);
544 // Run all processors
545 if (with_processors) {
546 Glib::RWLock::ReaderLock rm (_processor_lock, Glib::TRY_LOCK);
548 for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) {
549 (*i)->run (bufs, start_frame, end_frame, nframes, offset);
554 if (meter && (_meter_point == MeterPostFader)) {
555 _meter->run(bufs, start_frame, end_frame, nframes, offset);
560 IO::silence(nframes, offset);
562 MidiBuffer& out_buf = bufs.get_midi(0);
563 _immediate_events.read(out_buf, 0, 0, offset + nframes-1); // all stamps = 0
564 deliver_output(bufs, start_frame, end_frame, nframes, offset);
569 MidiTrack::export_stuff (BufferSet& bufs, nframes_t nframes, nframes_t end_frame)
575 MidiTrack::set_latency_delay (nframes_t longest_session_latency)
577 Route::set_latency_delay (longest_session_latency);
578 _diskstream->set_roll_delay (_roll_delay);
582 MidiTrack::bounce (InterThreadInfo& itt)
585 //vector<MidiSource*> srcs;
586 //_session.write_one_midi_track (*this, 0, _session.current_end_frame(), false, srcs, itt);
591 MidiTrack::bounce_range (nframes_t start, nframes_t end, InterThreadInfo& itt)
594 //vector<MidiSource*> srcs;
595 //_session.write_one_midi_track (*this, start, end, false, srcs, itt);
599 MidiTrack::freeze (InterThreadInfo& itt)
604 MidiTrack::unfreeze ()
606 _freeze_record.state = UnFrozen;
607 FreezeChange (); /* EMIT SIGNAL */
611 MidiTrack::set_mode (TrackMode m)
617 if (_diskstream->set_destructive (m == Destructive)) {
623 TrackModeChanged (); /* EMIT SIGNAL */
629 /** \return true on success, false on failure (no buffer space left)
632 MidiTrack::write_immediate_event(size_t size, const Byte* buf)
634 return (_immediate_events.write(0, size, buf) == size);
638 MidiTrack::MidiControl::set_value(float val)
641 assert(val <= 127.0);
643 boost::shared_ptr<MidiTrack> midi_track = _route.lock();
645 if (midi_track && !_list->automation_playback()) {
646 Byte ev[3] = { MIDI_CMD_CONTROL, _list->param_id().id(), (int)val };
647 midi_track->write_immediate_event(3, ev);
650 AutomationControl::set_value(val);