2 Copyright (C) 2007 Paul Davis
3 Written by Dave Robillard, 2007
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.
21 #define __STDC_LIMIT_MACROS 1
27 #include <pbd/enumwriter.h>
28 #include <midi++/events.h>
30 #include <ardour/midi_model.h>
31 #include <ardour/midi_source.h>
32 #include <ardour/types.h>
33 #include <ardour/session.h>
36 using namespace ARDOUR;
38 void MidiModel::write_lock() {
40 _automation_lock.lock();
43 void MidiModel::write_unlock() {
44 _lock.writer_unlock();
45 _automation_lock.unlock();
48 void MidiModel::read_lock() const {
50 /*_automation_lock.lock();*/
53 void MidiModel::read_unlock() const {
54 _lock.reader_unlock();
55 /*_automation_lock.unlock();*/
58 // Read iterator (const_iterator)
60 MidiModel::const_iterator::const_iterator(const MidiModel& model, double t)
62 , _is_end( (t == DBL_MAX) || model.empty())
65 //cerr << "Created MIDI iterator @ " << t << " (is end: " << _is_end << ")" << endl;
72 _note_iter = model.notes().end();
73 // find first note which begins after t
74 for (MidiModel::Notes::const_iterator i = model.notes().begin(); i != model.notes().end(); ++i) {
75 if ((*i)->time() >= t) {
81 MidiControlIterator earliest_control(boost::shared_ptr<AutomationList>(), DBL_MAX, 0.0);
83 _control_iters.reserve(model.controls().size());
84 for (Automatable::Controls::const_iterator i = model.controls().begin();
85 i != model.controls().end(); ++i) {
88 i->first.type() == MidiCCAutomation ||
89 i->first.type() == MidiPgmChangeAutomation ||
90 i->first.type() == MidiPitchBenderAutomation ||
91 i->first.type() == MidiChannelAftertouchAutomation);
94 bool ret = i->second->list()->rt_safe_earliest_event_unlocked(t, DBL_MAX, x, y);
96 //cerr << "MIDI Iterator: CC " << i->first.id() << " (size " << i->second->list()->size()
97 // << ") has no events past " << t << endl;
102 assert(y >= i->first.min());
103 assert(y <= i->first.max());
105 const MidiControlIterator new_iter(i->second->list(), x, y);
107 //cerr << "MIDI Iterator: CC " << i->first.id() << " added (" << x << ", " << y << ")" << endl;
108 _control_iters.push_back(new_iter);
110 if (x < earliest_control.x) {
111 earliest_control = new_iter;
112 _control_iter = _control_iters.end();
117 if (_note_iter != model.notes().end()) {
118 _event = MIDI::Event((*_note_iter)->on_event(), false);
119 _active_notes.push(*_note_iter);
120 //cerr << " new const iterator: size active notes: " << _active_notes.size() << " is empty: " << _active_notes.empty() << endl;
124 if (earliest_control.automation_list.get() && earliest_control.x < _event.time()) {
125 model.control_to_midi_event(_event, earliest_control);
127 _control_iter = _control_iters.end();
130 if (_event.size() == 0) {
131 //cerr << "Created MIDI iterator @ " << t << " is at end." << endl;
134 // FIXME: possible race condition here....
136 _model->read_unlock();
140 //printf("New MIDI Iterator = %X @ %lf\n", _event.type(), _event.time());
144 MidiModel::const_iterator::~const_iterator()
147 _model->read_unlock();
151 const MidiModel::const_iterator& MidiModel::const_iterator::operator++()
154 throw std::logic_error("Attempt to iterate past end of MidiModel");
157 /*cerr << "const_iterator::operator++: _event type:" << hex << "0x" << int(_event.type())
158 << " buffer: 0x" << int(_event.buffer()[0]) << " 0x" << int(_event.buffer()[1])
159 << " 0x" << int(_event.buffer()[2]) << endl;*/
161 if (! (_event.is_note() || _event.is_cc() || _event.is_pgm_change() || _event.is_pitch_bender() || _event.is_channel_aftertouch()) ) {
162 cerr << "FAILED event buffer: " << hex << int(_event.buffer()[0]) << int(_event.buffer()[1]) << int(_event.buffer()[2]) << endl;
164 assert((_event.is_note() || _event.is_cc() || _event.is_pgm_change() || _event.is_pitch_bender() || _event.is_channel_aftertouch()));
166 // Increment past current control event
167 if (!_event.is_note() && _control_iter != _control_iters.end() && _control_iter->automation_list.get()) {
168 double x = 0.0, y = 0.0;
169 const bool ret = _control_iter->automation_list->rt_safe_earliest_event_unlocked(
170 _control_iter->x, DBL_MAX, x, y, false);
171 //cerr << "control_iter x:" << _control_iter->x << " y:" << _control_iter->y << endl;
174 //cerr << "Incremented " << _control_iter->automation_list->parameter().id() << " to " << x << endl;
175 _control_iter->x = x;
176 _control_iter->y = y;
178 cerr << "Hit end of " << _control_iter->automation_list->parameter().id() << endl;
179 _control_iter->automation_list.reset();
180 _control_iter->x = DBL_MAX;
184 // Now find and point at the earliest event
186 const std::vector<MidiControlIterator>::iterator old_control_iter = _control_iter;
187 _control_iter = _control_iters.begin();
189 for (std::vector<MidiControlIterator>::iterator i = _control_iters.begin();
190 i != _control_iters.end(); ++i) {
191 if (i->x < _control_iter->x) {
196 enum Type {NIL, NOTE_ON, NOTE_OFF, AUTOMATION};
201 // Next earliest note on
202 if (_note_iter != _model->notes().end()) {
204 t = (*_note_iter)->time();
207 // Use the next earliest note off iff it's earlier than the note on
208 if (_model->note_mode() == Sustained && (! _active_notes.empty())) {
209 if (type == NIL || _active_notes.top()->end_time() <= (*_note_iter)->time()) {
211 t = _active_notes.top()->end_time();
215 // Use the next earliest controller iff it's earlier than the note event
216 if (_control_iter != _control_iters.end()
217 && _control_iter->x != DBL_MAX
218 )//&& _control_iter != old_control_iter)
219 if (type == NIL || _control_iter->x < t)
222 if (type == NOTE_ON) {
223 //cerr << "********** MIDI Iterator = note on" << endl;
224 _event = MIDI::Event((*_note_iter)->on_event(), false);
225 _active_notes.push(*_note_iter);
227 } else if (type == NOTE_OFF) {
228 //cerr << "********** MIDI Iterator = note off" << endl;
229 _event = MIDI::Event(_active_notes.top()->off_event(), false);
231 } else if (type == AUTOMATION) {
232 //cerr << "********** MIDI Iterator = Automation" << endl;
233 _model->control_to_midi_event(_event, *_control_iter);
235 //cerr << "********** MIDI Iterator = End" << endl;
239 assert(_is_end || _event.size()> 0);
244 bool MidiModel::const_iterator::operator==(const const_iterator& other) const
246 if (_is_end || other._is_end) {
247 return (_is_end == other._is_end);
249 return (_event == other._event);
253 MidiModel::const_iterator& MidiModel::const_iterator::operator=(const const_iterator& other)
255 if (_locked && _model != other._model)
256 _model->read_unlock();
258 assert( ! other._event.owns_buffer());
260 _model = other._model;
261 _event = other._event;
262 _active_notes = other._active_notes;
263 _is_end = other._is_end;
264 _locked = other._locked;
265 _note_iter = other._note_iter;
266 _control_iters = other._control_iters;
267 size_t index = other._control_iter - other._control_iters.begin();
268 _control_iter = _control_iters.begin() + index;
270 assert( !_event.owns_buffer() );
277 MidiModel::MidiModel(MidiSource *s, size_t size)
278 : Automatable(s->session(), "midi model")
280 , _note_mode(Sustained)
283 , _end_iter(*this, DBL_MAX)
284 , _next_read(UINT32_MAX)
285 , _read_iter(*this, DBL_MAX)
288 assert(_end_iter._is_end);
289 assert( ! _end_iter._locked);
292 /** Read events in frame range \a start .. \a start+cnt into \a dst,
293 * adding \a stamp_offset to each event's timestamp.
294 * \return number of events written to \a dst
296 size_t MidiModel::read(MidiRingBuffer& dst, nframes_t start, nframes_t nframes,
297 nframes_t stamp_offset, nframes_t negative_stamp_offset) const
299 //cerr << this << " MM::read @ " << start << " frames: " << nframes << " -> " << stamp_offset << endl;
300 //cerr << this << " MM # notes: " << n_notes() << endl;
302 size_t read_events = 0;
304 if (start != _next_read) {
305 _read_iter = const_iterator(*this, (double)start);
306 //cerr << "Repositioning iterator from " << _next_read << " to " << start << endl;
308 //cerr << "Using cached iterator at " << _next_read << endl;
311 _next_read = start + nframes;
313 while (_read_iter != end() && _read_iter->time() < start + nframes) {
314 assert(_read_iter->size()> 0);
315 assert(_read_iter->buffer());
316 dst.write(_read_iter->time() + stamp_offset - negative_stamp_offset,
317 _read_iter->size(), _read_iter->buffer());
319 //cerr << this << " MidiModel::read event @ " << _read_iter->time()
320 //<< " type: " << hex << int(_read_iter->type()) << dec
321 //<< " note: " << int(_read_iter->note())
322 //<< " velocity: " << int(_read_iter->velocity())
332 bool MidiModel::control_to_midi_event(MIDI::Event& ev,
333 const MidiControlIterator& iter) const
335 assert(iter.automation_list.get() != 0);
337 switch (iter.automation_list->parameter().type()) {
338 case MidiCCAutomation:
340 ev.set_buffer((Byte*)malloc(3), true);
343 assert(iter.automation_list);
344 assert(iter.automation_list->parameter().channel() < 16);
345 assert(iter.automation_list->parameter().id() <= INT8_MAX);
346 assert(iter.y <= INT8_MAX);
347 ev.buffer()[0] = MIDI_CMD_CONTROL + iter.automation_list->parameter().channel();
348 ev.buffer()[1] = (Byte)iter.automation_list->parameter().id();
349 ev.buffer()[2] = (Byte)iter.y;
354 case MidiPgmChangeAutomation:
356 ev.set_buffer((Byte*)malloc(2), true);
359 assert(iter.automation_list);
360 assert(iter.automation_list->parameter().channel() < 16);
361 assert(iter.automation_list->parameter().id() == 0);
362 assert(iter.y <= INT8_MAX);
363 ev.buffer()[0] = MIDI_CMD_PGM_CHANGE + iter.automation_list->parameter().channel();
364 ev.buffer()[1] = (Byte)iter.y;
369 case MidiPitchBenderAutomation:
371 ev.set_buffer((Byte*)malloc(3), true);
374 assert(iter.automation_list);
375 assert(iter.automation_list->parameter().channel() < 16);
376 assert(iter.automation_list->parameter().id() == 0);
377 assert(iter.y < (1<<14));
378 ev.buffer()[0] = MIDI_CMD_BENDER + iter.automation_list->parameter().channel();
379 ev.buffer()[1] = ((Byte)iter.y) & 0x7F; // LSB
380 ev.buffer()[2] = (((Byte)iter.y) >> 7) & 0x7F; // MSB
385 case MidiChannelAftertouchAutomation:
387 ev.set_buffer((Byte*)malloc(2), true);
390 assert(iter.automation_list);
391 assert(iter.automation_list->parameter().channel() < 16);
392 assert(iter.automation_list->parameter().id() == 0);
393 assert(iter.y <= INT8_MAX);
395 = MIDI_CMD_CHANNEL_PRESSURE + iter.automation_list->parameter().channel();
396 ev.buffer()[1] = (Byte)iter.y;
407 /** Clear all events from the model.
409 void MidiModel::clear()
416 _lock.writer_unlock();
420 /** Begin a write of events to the model.
422 * If \a mode is Sustained, complete notes with duration are constructed as note
423 * on/off events are received. Otherwise (Percussive), only note on events are
424 * stored; note off events are discarded entirely and all contained notes will
427 void MidiModel::start_write()
429 //cerr << "MM " << this << " START WRITE, MODE = " << enum_2_string(_note_mode) << endl;
432 for (int i = 0; i < 16; ++i)
433 _write_notes[i].clear();
435 _dirty_automations.clear();
439 /** Finish a write of events to the model.
441 * If \a delete_stuck is true and the current mode is Sustained, note on events
442 * that were never resolved with a corresonding note off will be deleted.
443 * Otherwise they will remain as notes with duration 0.
445 void MidiModel::end_write(bool delete_stuck)
450 //cerr << "MM " << this << " END WRITE: " << _notes.size() << " NOTES\n";
452 if (_note_mode == Sustained && delete_stuck) {
453 for (Notes::iterator n = _notes.begin(); n != _notes.end() ;) {
454 if ((*n)->duration() == 0) {
455 cerr << "WARNING: Stuck note lost: " << (*n)->note() << endl;
457 // we have to break here because erase invalidates the iterator
465 for (int i = 0; i < 16; ++i) {
466 if (!_write_notes[i].empty()) {
467 cerr << "WARNING: MidiModel::end_write: Channel " << i << " has "
468 << _write_notes[i].size() << " stuck notes" << endl;
470 _write_notes[i].clear();
473 for (AutomationLists::const_iterator i = _dirty_automations.begin(); i != _dirty_automations.end(); ++i) {
475 (*i)->lookup_cache().left = -1;
476 (*i)->search_cache().left = -1;
483 /** Append \a in_event to model. NOT realtime safe.
485 * Timestamps of events in \a buf are expected to be relative to
486 * the start of this model (t=0) and MUST be monotonically increasing
487 * and MUST be >= the latest event currently in the model.
489 void MidiModel::append(const MIDI::Event& ev)
494 assert(_notes.empty() || ev.time() >= _notes.back()->time());
497 if (ev.is_note_on()) {
498 append_note_on_unlocked(ev.channel(), ev.time(), ev.note(),
500 } else if (ev.is_note_off()) {
501 append_note_off_unlocked(ev.channel(), ev.time(), ev.note());
502 } else if (ev.is_cc()) {
503 append_automation_event_unlocked(MidiCCAutomation, ev.channel(),
504 ev.time(), ev.cc_number(), ev.cc_value());
505 } else if (ev.is_pgm_change()) {
506 append_automation_event_unlocked(MidiPgmChangeAutomation, ev.channel(),
507 ev.time(), ev.pgm_number(), 0);
508 } else if (ev.is_pitch_bender()) {
509 append_automation_event_unlocked(MidiPitchBenderAutomation,
510 ev.channel(), ev.time(), ev.pitch_bender_lsb(),
511 ev.pitch_bender_msb());
512 } else if (ev.is_channel_aftertouch()) {
513 append_automation_event_unlocked(MidiChannelAftertouchAutomation,
514 ev.channel(), ev.time(), ev.channel_aftertouch(), 0);
516 printf("WARNING: MidiModel: Unknown event type %X\n", ev.type());
522 void MidiModel::append_note_on_unlocked(uint8_t chan, double time,
523 uint8_t note_num, uint8_t velocity)
525 /*cerr << "MidiModel " << this << " chan " << (int)chan <<
526 " note " << (int)note_num << " on @ " << time << endl;*/
532 boost::shared_ptr<Note> new_note(new Note(chan, time, 0, note_num, velocity));
533 _notes.push_back(new_note);
534 if (_note_mode == Sustained) {
535 //cerr << "MM Sustained: Appending active note on " << (unsigned)(uint8_t)note_num << endl;
536 _write_notes[chan].push_back(_notes.size() - 1);
538 cerr << "MM Percussive: NOT appending active note on" << endl;
542 void MidiModel::append_note_off_unlocked(uint8_t chan, double time,
545 /*cerr << "MidiModel " << this << " chan " << (int)chan <<
546 " note " << (int)note_num << " off @ " << time << endl;*/
552 if (_note_mode == Percussive) {
553 cerr << "MidiModel Ignoring note off (percussive mode)" << endl;
557 /* FIXME: make _write_notes fixed size (127 noted) for speed */
559 /* FIXME: note off velocity for that one guy out there who actually has
560 * keys that send it */
562 bool resolved = false;
564 for (WriteNotes::iterator n = _write_notes[chan].begin(); n
565 != _write_notes[chan].end(); ++n) {
566 Note& note = *_notes[*n].get();
567 //cerr << (unsigned)(uint8_t)note.note() << " ? " << (unsigned)note_num << endl;
568 if (note.note() == note_num) {
569 assert(time >= note.time());
570 note.set_duration(time - note.time());
571 _write_notes[chan].erase(n);
572 //cerr << "MM resolved note, duration: " << note.duration() << endl;
579 cerr << "MidiModel " << this << " spurious note off chan " << (int)chan
580 << ", note " << (int)note_num << " @ " << time << endl;
584 void MidiModel::append_automation_event_unlocked(AutomationType type,
585 uint8_t chan, double time, uint8_t first_byte, uint8_t second_byte)
587 //cerr << "MidiModel " << this << " chan " << (int)chan <<
588 // " CC " << (int)number << " = " << (int)value << " @ " << time << endl;
598 case MidiCCAutomation:
600 value = double(second_byte);
602 case MidiChannelAftertouchAutomation:
603 case MidiPgmChangeAutomation:
605 value = double(first_byte);
607 case MidiPitchBenderAutomation:
609 value = double((0x7F & second_byte) << 7 | (0x7F & first_byte));
615 Parameter param(type, id, chan);
616 boost::shared_ptr<AutomationControl> control = Automatable::control(param, true);
617 control->list()->rt_add(time, value);
620 void MidiModel::add_note_unlocked(const boost::shared_ptr<Note> note)
622 //cerr << "MidiModel " << this << " add note " << (int)note.note() << " @ " << note.time() << endl;
624 Notes::iterator i = upper_bound(_notes.begin(), _notes.end(), note,
625 note_time_comparator);
626 _notes.insert(i, note);
629 void MidiModel::remove_note_unlocked(const boost::shared_ptr<const Note> note)
632 //cerr << "MidiModel " << this << " remove note " << (int)note.note() << " @ " << note.time() << endl;
633 for (Notes::iterator n = _notes.begin(); n != _notes.end(); ++n) {
635 const Note& _note = *note;
636 // TODO: There is still the issue, that after restarting ardour
637 // persisted undo does not work, because of rounding errors in the
638 // event times after saving/restoring to/from MIDI files
639 cerr << "======================================= " << endl;
640 cerr << int(_n.note()) << "@" << int(_n.time()) << "[" << int(_n.channel()) << "] --" << int(_n.duration()) << "-- #" << int(_n.velocity()) << endl;
641 cerr << int(_note.note()) << "@" << int(_note.time()) << "[" << int(_note.channel()) << "] --" << int(_note.duration()) << "-- #" << int(_note.velocity()) << endl;
642 cerr << "Equal: " << bool(_n == _note) << endl;
643 cerr << endl << endl;
646 // we have to break here, because erase invalidates all iterators, ie. n itself
652 /** Slow! for debugging only. */
654 bool MidiModel::is_sorted() const {
656 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n)
657 if ((*n)->time() < t)
666 /** Start a new command.
668 * This has no side-effects on the model or Session, the returned command
669 * can be held on to for as long as the caller wishes, or discarded without
670 * formality, until apply_command is called and ownership is taken.
672 MidiModel::DeltaCommand* MidiModel::new_delta_command(const string name)
674 DeltaCommand* cmd = new DeltaCommand(_midi_source->model(), name);
680 * Ownership of cmd is taken, it must not be deleted by the caller.
681 * The command will constitute one item on the undo stack.
683 void MidiModel::apply_command(Command* cmd)
685 _session.begin_reversible_command(cmd->name());
688 _session.commit_reversible_command(cmd);
694 MidiModel::DeltaCommand::DeltaCommand(boost::shared_ptr<MidiModel> m,
695 const std::string& name)
702 MidiModel::DeltaCommand::DeltaCommand(boost::shared_ptr<MidiModel> m,
709 void MidiModel::DeltaCommand::add(const boost::shared_ptr<Note> note)
711 //cerr << "MEC: apply" << endl;
712 _removed_notes.remove(note);
713 _added_notes.push_back(note);
716 void MidiModel::DeltaCommand::remove(const boost::shared_ptr<Note> note)
718 //cerr << "MEC: remove" << endl;
719 _added_notes.remove(note);
720 _removed_notes.push_back(note);
723 void MidiModel::DeltaCommand::operator()()
725 // This could be made much faster by using a priority_queue for added and
726 // removed notes (or sort here), and doing a single iteration over _model
728 // Need to reset iterator to drop the read lock it holds, or we'll deadlock
729 const bool reset_iter = (_model->_read_iter.locked());
730 const double iter_time = _model->_read_iter->time();
733 _model->_read_iter = _model->end(); // drop read lock
735 assert( ! _model->_read_iter.locked());
737 _model->write_lock();
739 for (std::list< boost::shared_ptr<Note> >::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i)
740 _model->add_note_unlocked(*i);
742 for (std::list< boost::shared_ptr<Note> >::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i)
743 _model->remove_note_unlocked(*i);
745 _model->write_unlock();
748 _model->_read_iter = const_iterator(*_model.get(), iter_time);
750 _model->ContentsChanged(); /* EMIT SIGNAL */
753 void MidiModel::DeltaCommand::undo()
755 // This could be made much faster by using a priority_queue for added and
756 // removed notes (or sort here), and doing a single iteration over _model
758 // Need to reset iterator to drop the read lock it holds, or we'll deadlock
759 const bool reset_iter = (_model->_read_iter.locked());
760 const double iter_time = _model->_read_iter->time();
763 _model->_read_iter = _model->end(); // drop read lock
765 assert( ! _model->_read_iter.locked());
767 _model->write_lock();
769 for (std::list< boost::shared_ptr<Note> >::iterator i = _added_notes.begin(); i
770 != _added_notes.end(); ++i)
771 _model->remove_note_unlocked(*i);
773 for (std::list< boost::shared_ptr<Note> >::iterator i =
774 _removed_notes.begin(); i != _removed_notes.end(); ++i)
775 _model->add_note_unlocked(*i);
777 _model->write_unlock();
780 _model->_read_iter = const_iterator(*_model.get(), iter_time);
782 _model->ContentsChanged(); /* EMIT SIGNAL */
785 XMLNode & MidiModel::DeltaCommand::marshal_note(const boost::shared_ptr<Note> note)
787 XMLNode *xml_note = new XMLNode("note");
788 ostringstream note_str(ios::ate);
789 note_str << int(note->note());
790 xml_note->add_property("note", note_str.str());
792 ostringstream channel_str(ios::ate);
793 channel_str << int(note->channel());
794 xml_note->add_property("channel", channel_str.str());
796 ostringstream time_str(ios::ate);
797 time_str << int(note->time());
798 xml_note->add_property("time", time_str.str());
800 ostringstream duration_str(ios::ate);
801 duration_str <<(unsigned int) note->duration();
802 xml_note->add_property("duration", duration_str.str());
804 ostringstream velocity_str(ios::ate);
805 velocity_str << (unsigned int) note->velocity();
806 xml_note->add_property("velocity", velocity_str.str());
811 boost::shared_ptr<Note> MidiModel::DeltaCommand::unmarshal_note(XMLNode *xml_note)
814 istringstream note_str(xml_note->property("note")->value());
817 unsigned int channel;
818 istringstream channel_str(xml_note->property("channel")->value());
819 channel_str >> channel;
822 istringstream time_str(xml_note->property("time")->value());
825 unsigned int duration;
826 istringstream duration_str(xml_note->property("duration")->value());
827 duration_str >> duration;
829 unsigned int velocity;
830 istringstream velocity_str(xml_note->property("velocity")->value());
831 velocity_str >> velocity;
833 boost::shared_ptr<Note> note_ptr(new Note(channel, time, duration, note, velocity));
837 #define ADDED_NOTES_ELEMENT "added_notes"
838 #define REMOVED_NOTES_ELEMENT "removed_notes"
839 #define DELTA_COMMAND_ELEMENT "DeltaCommand"
841 int MidiModel::DeltaCommand::set_state(const XMLNode& delta_command)
843 if (delta_command.name() != string(DELTA_COMMAND_ELEMENT)) {
847 _added_notes.clear();
848 XMLNode *added_notes = delta_command.child(ADDED_NOTES_ELEMENT);
849 XMLNodeList notes = added_notes->children();
850 transform(notes.begin(), notes.end(), back_inserter(_added_notes),
851 sigc::mem_fun(*this, &DeltaCommand::unmarshal_note));
853 _removed_notes.clear();
854 XMLNode *removed_notes = delta_command.child(REMOVED_NOTES_ELEMENT);
855 notes = removed_notes->children();
856 transform(notes.begin(), notes.end(), back_inserter(_removed_notes),
857 sigc::mem_fun(*this, &DeltaCommand::unmarshal_note));
862 XMLNode& MidiModel::DeltaCommand::get_state()
864 XMLNode *delta_command = new XMLNode(DELTA_COMMAND_ELEMENT);
865 delta_command->add_property("midi_source", _model->midi_source()->id().to_s());
867 XMLNode *added_notes = delta_command->add_child(ADDED_NOTES_ELEMENT);
868 for_each(_added_notes.begin(), _added_notes.end(), sigc::compose(
869 sigc::mem_fun(*added_notes, &XMLNode::add_child_nocopy),
870 sigc::mem_fun(*this, &DeltaCommand::marshal_note)));
872 XMLNode *removed_notes = delta_command->add_child(REMOVED_NOTES_ELEMENT);
873 for_each(_removed_notes.begin(), _removed_notes.end(), sigc::compose(
874 sigc::mem_fun(*removed_notes, &XMLNode::add_child_nocopy),
875 sigc::mem_fun(*this, &DeltaCommand::marshal_note)));
877 return *delta_command;
880 struct EventTimeComparator {
881 typedef const MIDI::Event* value_type;
882 inline bool operator()(const MIDI::Event& a, const MIDI::Event& b) const {
883 return a.time() >= b.time();
887 /** Write the model to a MidiSource (i.e. save the model).
888 * This is different from manually using read to write to a source in that
889 * note off events are written regardless of the track mode. This is so the
890 * user can switch a recorded track (with note durations from some instrument)
891 * to percussive, save, reload, then switch it back to sustained without
892 * destroying the original note durations.
894 bool MidiModel::write_to(boost::shared_ptr<MidiSource> source)
898 const NoteMode old_note_mode = _note_mode;
899 _note_mode = Sustained;
901 for (const_iterator i = begin(); i != end(); ++i) {
902 source->append_event_unlocked(Frames, *i);
905 _note_mode = old_note_mode;
913 XMLNode& MidiModel::get_state()
915 XMLNode *node = new XMLNode("MidiModel");