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();
150 const MidiModel::const_iterator& MidiModel::const_iterator::operator++()
153 throw std::logic_error("Attempt to iterate past end of MidiModel");
155 /*cerr << "const_iterator::operator++: _event type:" << hex << "0x" << int(_event.type())
156 << " buffer: 0x" << int(_event.buffer()[0]) << " 0x" << int(_event.buffer()[1])
157 << " 0x" << int(_event.buffer()[2]) << endl;*/
159 if (! (_event.is_note() || _event.is_cc() || _event.is_pgm_change() || _event.is_pitch_bender() || _event.is_channel_aftertouch()) ) {
160 cerr << "FAILED event buffer: " << hex << int(_event.buffer()[0]) << int(_event.buffer()[1]) << int(_event.buffer()[2]) << endl;
162 assert((_event.is_note() || _event.is_cc() || _event.is_pgm_change() || _event.is_pitch_bender() || _event.is_channel_aftertouch()));
164 // Increment past current control event
165 if (!_event.is_note() && _control_iter != _control_iters.end() && _control_iter->automation_list.get()) {
166 double x = 0.0, y = 0.0;
167 const bool ret = _control_iter->automation_list->rt_safe_earliest_event_unlocked(
168 _control_iter->x, DBL_MAX, x, y, false);
169 //cerr << "control_iter x:" << _control_iter->x << " y:" << _control_iter->y << endl;
172 cerr << "Incremented " << _control_iter->automation_list->parameter().id() << " to " << x << endl;
173 _control_iter->x = x;
174 _control_iter->y = y;
176 cerr << "Hit end of " << _control_iter->automation_list->parameter().id() << endl;
177 _control_iter->automation_list.reset();
178 _control_iter->x = DBL_MAX;
182 // Now find and point at the earliest event
184 const std::vector<MidiControlIterator>::iterator old_control_iter = _control_iter;
185 _control_iter = _control_iters.begin();
187 for (std::vector<MidiControlIterator>::iterator i = _control_iters.begin();
188 i != _control_iters.end(); ++i) {
189 if (i->x < _control_iter->x) {
194 enum Type {NIL, NOTE_ON, NOTE_OFF, AUTOMATION};
199 // Next earliest note on
200 if (_note_iter != _model->notes().end()) {
202 t = (*_note_iter)->time();
205 // Use the next earliest note off iff it's earlier than the note on
206 if (_model->note_mode() == Sustained && (! _active_notes.empty())) {
207 if (type == NIL || _active_notes.top()->end_time() <= (*_note_iter)->time()) {
209 t = _active_notes.top()->end_time();
213 // Use the next earliest controller iff it's earlier than the note event
214 if (_control_iter != _control_iters.end()
215 && _control_iter->x != DBL_MAX
216 )//&& _control_iter != old_control_iter)
217 if (type == NIL || _control_iter->x < t)
220 if (type == NOTE_ON) {
221 //cerr << "********** MIDI Iterator = note on" << endl;
222 _event = MIDI::Event((*_note_iter)->on_event(), false);
223 _active_notes.push(*_note_iter);
225 } else if (type == NOTE_OFF) {
226 //cerr << "********** MIDI Iterator = note off" << endl;
227 _event = MIDI::Event(_active_notes.top()->off_event(), false);
229 } else if (type == AUTOMATION) {
230 //cerr << "********** MIDI Iterator = Automation" << endl;
231 _model->control_to_midi_event(_event, *_control_iter);
233 //cerr << "********** MIDI Iterator = End" << endl;
237 assert(_is_end || _event.size()> 0);
242 bool MidiModel::const_iterator::operator==(const const_iterator& other) const
244 if (_is_end || other._is_end)
245 return (_is_end == other._is_end);
247 return (_event == other._event);
250 MidiModel::const_iterator& MidiModel::const_iterator::operator=(const const_iterator& other)
252 if (_locked && _model != other._model)
253 _model->read_unlock();
255 assert( ! other._event.owns_buffer());
257 _model = other._model;
258 _event = other._event;
259 _active_notes = other._active_notes;
260 _is_end = other._is_end;
261 _locked = other._locked;
262 _note_iter = other._note_iter;
263 _control_iters = other._control_iters;
264 size_t index = other._control_iter - other._control_iters.begin();
265 _control_iter = _control_iters.begin() + index;
267 assert( ! _event.owns_buffer());
274 MidiModel::MidiModel(MidiSource *s, size_t size)
275 : Automatable(s->session(), "midi model")
277 , _note_mode(Sustained)
280 , _end_iter(*this, DBL_MAX)
281 , _next_read(UINT32_MAX)
282 , _read_iter(*this, DBL_MAX)
285 assert(_end_iter._is_end);
286 assert( ! _end_iter._locked);
289 /** Read events in frame range \a start .. \a start+cnt into \a dst,
290 * adding \a stamp_offset to each event's timestamp.
291 * \return number of events written to \a dst
293 size_t MidiModel::read(MidiRingBuffer& dst, nframes_t start, nframes_t nframes,
294 nframes_t stamp_offset, nframes_t negative_stamp_offset) const
296 //cerr << this << " MM::read @ " << start << " frames: " << nframes << " -> " << stamp_offset << endl;
297 //cerr << this << " MM # notes: " << n_notes() << endl;
299 size_t read_events = 0;
301 if (start != _next_read) {
302 _read_iter = const_iterator(*this, (double)start);
303 //cerr << "Repositioning iterator from " << _next_read << " to " << start << endl;
305 //cerr << "Using cached iterator at " << _next_read << endl;
308 _next_read = start + nframes;
310 while (_read_iter != end() && _read_iter->time() < start + nframes) {
311 assert(_read_iter->size()> 0);
312 dst.write(_read_iter->time() + stamp_offset - negative_stamp_offset,
313 _read_iter->size(), _read_iter->buffer());
316 cerr << this << " MidiModel::read event @ " << _read_iter->time()
317 << " type: " << hex << int(_read_iter->type()) << dec
318 << " note: " << int(_read_iter->note())
319 << " velocity: " << int(_read_iter->velocity())
330 bool MidiModel::control_to_midi_event(MIDI::Event& ev,
331 const MidiControlIterator& iter) const
333 assert(iter.automation_list.get() != 0);
335 switch (iter.automation_list->parameter().type()) {
336 case MidiCCAutomation:
338 ev.set_buffer((Byte*)malloc(3), true);
340 assert(iter.automation_list);
341 assert(iter.automation_list->parameter().channel() < 16);
342 assert(iter.automation_list->parameter().id() <= INT8_MAX);
343 assert(iter.y <= INT8_MAX);
344 ev.buffer()[0] = MIDI_CMD_CONTROL + iter.automation_list->parameter().channel();
345 ev.buffer()[1] = (Byte)iter.automation_list->parameter().id();
346 ev.buffer()[2] = (Byte)iter.y;
351 case MidiPgmChangeAutomation:
353 ev.set_buffer((Byte*)malloc(3), true);
355 assert(iter.automation_list);
356 assert(iter.automation_list->parameter().channel() < 16);
357 assert(iter.automation_list->parameter().id() <= INT8_MAX);
358 assert(iter.y <= INT8_MAX);
359 ev.buffer()[0] = MIDI_CMD_PGM_CHANGE + iter.automation_list->parameter().channel();
360 ev.buffer()[1] = (Byte)iter.y;
366 case MidiPitchBenderAutomation:
368 ev.set_buffer((Byte*)malloc(3), true);
370 assert(iter.automation_list);
371 assert(iter.automation_list->parameter().channel() < 16);
372 assert(iter.automation_list->parameter().id() <= INT8_MAX);
373 assert(iter.y < (1<<14));
374 ev.buffer()[0] = MIDI_CMD_BENDER + iter.automation_list->parameter().channel();
375 ev.buffer()[1] = ((Byte)iter.y) & 0x7F; // LSB
376 ev.buffer()[2] = (((Byte)iter.y) >> 7) & 0x7F; // MSB
381 case MidiChannelAftertouchAutomation:
383 ev.set_buffer((Byte*)malloc(3), true);
385 assert(iter.automation_list);
386 assert(iter.automation_list->parameter().channel() < 16);
387 assert(iter.automation_list->parameter().id() <= INT8_MAX);
388 assert(iter.y <= INT8_MAX);
390 = MIDI_CMD_CHANNEL_PRESSURE + iter.automation_list->parameter().channel();
391 ev.buffer()[1] = (Byte)iter.y;
403 /** Clear all events from the model.
405 void MidiModel::clear()
412 _lock.writer_unlock();
416 /** Begin a write of events to the model.
418 * If \a mode is Sustained, complete notes with duration are constructed as note
419 * on/off events are received. Otherwise (Percussive), only note on events are
420 * stored; note off events are discarded entirely and all contained notes will
423 void MidiModel::start_write()
425 //cerr << "MM " << this << " START WRITE, MODE = " << enum_2_string(_note_mode) << endl;
428 for (int i = 0; i < 16; ++i)
429 _write_notes[i].clear();
431 _dirty_automations.clear();
435 /** Finish a write of events to the model.
437 * If \a delete_stuck is true and the current mode is Sustained, note on events
438 * that were never resolved with a corresonding note off will be deleted.
439 * Otherwise they will remain as notes with duration 0.
441 void MidiModel::end_write(bool delete_stuck)
446 //cerr << "MM " << this << " END WRITE: " << _notes.size() << " NOTES\n";
448 if (_note_mode == Sustained && delete_stuck) {
449 for (Notes::iterator n = _notes.begin(); n != _notes.end() ;) {
450 if ((*n)->duration() == 0) {
451 cerr << "WARNING: Stuck note lost: " << (*n)->note() << endl;
453 // we have to break here because erase invalidates the iterator
461 for (int i = 0; i < 16; ++i) {
462 if (!_write_notes[i].empty()) {
463 cerr << "WARNING: MidiModel::end_write: Channel " << i << " has "
464 << _write_notes[i].size() << " stuck notes" << endl;
466 _write_notes[i].clear();
469 for (AutomationLists::const_iterator i = _dirty_automations.begin(); i != _dirty_automations.end(); ++i) {
471 (*i)->lookup_cache().left = -1;
472 (*i)->search_cache().left = -1;
479 /** Append \a in_event to model. NOT realtime safe.
481 * Timestamps of events in \a buf are expected to be relative to
482 * the start of this model (t=0) and MUST be monotonically increasing
483 * and MUST be >= the latest event currently in the model.
485 void MidiModel::append(const MIDI::Event& ev)
490 cerr << "MidiModel append event type: "
491 << hex << "0x" << (int)ev.type() << endl;
493 assert(_notes.empty() || ev.time() >= _notes.back()->time());
496 if (ev.is_note_on()) {
497 append_note_on_unlocked(ev.channel(), ev.time(), ev.note(),
499 } else if (ev.is_note_off()) {
500 append_note_off_unlocked(ev.channel(), ev.time(), ev.note());
501 } else if (ev.is_cc()) {
502 append_automation_event_unlocked(MidiCCAutomation, ev.channel(),
503 ev.time(), ev.cc_number(), ev.cc_value());
504 } else if (ev.is_pgm_change()) {
505 append_automation_event_unlocked(MidiPgmChangeAutomation, ev.channel(),
506 ev.time(), ev.pgm_number(), 0);
507 } else if (ev.is_pitch_bender()) {
508 append_automation_event_unlocked(MidiPitchBenderAutomation,
509 ev.channel(), ev.time(), ev.pitch_bender_lsb(),
510 ev.pitch_bender_msb());
511 } else if (ev.is_channel_aftertouch()) {
512 append_automation_event_unlocked(MidiChannelAftertouchAutomation,
513 ev.channel(), ev.time(), ev.channel_aftertouch(), 0);
515 printf("WARNING: MidiModel: Unknown event type %X\n", ev.type());
521 void MidiModel::append_note_on_unlocked(uint8_t chan, double time,
522 uint8_t note_num, uint8_t velocity)
524 /*cerr << "MidiModel " << this << " chan " << (int)chan <<
525 " note " << (int)note_num << " on @ " << time << endl;*/
531 _notes.push_back(boost::shared_ptr<Note>(new Note(chan, time, 0, note_num, velocity)));
532 if (_note_mode == Sustained) {
533 //cerr << "MM Sustained: Appending active note on " << (unsigned)(uint8_t)note_num << endl;
534 _write_notes[chan].push_back(_notes.size() - 1);
536 cerr << "MM Percussive: NOT appending active note on" << endl;
540 void MidiModel::append_note_off_unlocked(uint8_t chan, double time,
543 /*cerr << "MidiModel " << this << " chan " << (int)chan <<
544 " note " << (int)note_num << " off @ " << time << endl;*/
550 if (_note_mode == Percussive) {
551 cerr << "MidiModel Ignoring note off (percussive mode)" << endl;
555 /* FIXME: make _write_notes fixed size (127 noted) for speed */
557 /* FIXME: note off velocity for that one guy out there who actually has
558 * keys that send it */
560 bool resolved = false;
562 for (WriteNotes::iterator n = _write_notes[chan].begin(); n
563 != _write_notes[chan].end(); ++n) {
564 Note& note = *_notes[*n].get();
565 //cerr << (unsigned)(uint8_t)note.note() << " ? " << (unsigned)note_num << endl;
566 if (note.note() == note_num) {
567 assert(time >= note.time());
568 note.set_duration(time - note.time());
569 _write_notes[chan].erase(n);
570 //cerr << "MM resolved note, duration: " << note.duration() << endl;
577 cerr << "MidiModel " << this << " spurious note off chan " << (int)chan
578 << ", note " << (int)note_num << " @ " << time << endl;
581 void MidiModel::append_automation_event_unlocked(AutomationType type,
582 uint8_t chan, double time, uint8_t first_byte, uint8_t second_byte)
584 //cerr << "MidiModel " << this << " chan " << (int)chan <<
585 // " CC " << (int)number << " = " << (int)value << " @ " << time << endl;
595 case MidiCCAutomation:
597 value = double(second_byte);
599 case MidiChannelAftertouchAutomation:
600 case MidiPgmChangeAutomation:
602 value = double(first_byte);
604 case MidiPitchBenderAutomation:
606 value = double((0x7F & second_byte) << 7 | (0x7F & first_byte));
612 Parameter param(type, id, chan);
613 boost::shared_ptr<AutomationControl> control = Automatable::control(param, true);
614 control->list()->fast_simple_add(time, value);
615 /*cerr << "control list size after fast simple add: " << control->list()->size() << endl;*/
618 void MidiModel::add_note_unlocked(const boost::shared_ptr<Note> note)
620 //cerr << "MidiModel " << this << " add note " << (int)note.note() << " @ " << note.time() << endl;
622 Notes::iterator i = upper_bound(_notes.begin(), _notes.end(), note,
623 note_time_comparator);
624 _notes.insert(i, note);
627 void MidiModel::remove_note_unlocked(const boost::shared_ptr<const Note> note)
630 //cerr << "MidiModel " << this << " remove note " << (int)note.note() << " @ " << note.time() << endl;
631 for (Notes::iterator n = _notes.begin(); n != _notes.end(); ++n) {
633 const Note& _note = *note;
634 // TODO: There is still the issue, that after restarting ardour
635 // persisted undo does not work, because of rounding errors in the
636 // event times after saving/restoring to/from MIDI files
637 cerr << "======================================= " << endl;
638 cerr << int(_n.note()) << "@" << int(_n.time()) << "[" << int(_n.channel()) << "] --" << int(_n.duration()) << "-- #" << int(_n.velocity()) << endl;
639 cerr << int(_note.note()) << "@" << int(_note.time()) << "[" << int(_note.channel()) << "] --" << int(_note.duration()) << "-- #" << int(_note.velocity()) << endl;
640 cerr << "Equal: " << bool(_n == _note) << endl;
641 cerr << endl << endl;
644 // we have to break here, because erase invalidates all iterators, ie. n itself
650 /** Slow! for debugging only. */
652 bool MidiModel::is_sorted() const {
654 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n)
655 if ((*n)->time() < t)
664 /** Start a new command.
666 * This has no side-effects on the model or Session, the returned command
667 * can be held on to for as long as the caller wishes, or discarded without
668 * formality, until apply_command is called and ownership is taken.
670 MidiModel::DeltaCommand* MidiModel::new_delta_command(const string name)
672 DeltaCommand* cmd = new DeltaCommand(_midi_source->model(), name);
678 * Ownership of cmd is taken, it must not be deleted by the caller.
679 * The command will constitute one item on the undo stack.
681 void MidiModel::apply_command(Command* cmd)
683 _session.begin_reversible_command(cmd->name());
686 _session.commit_reversible_command(cmd);
692 MidiModel::DeltaCommand::DeltaCommand(boost::shared_ptr<MidiModel> m,
693 const std::string& name)
700 MidiModel::DeltaCommand::DeltaCommand(boost::shared_ptr<MidiModel> m,
707 void MidiModel::DeltaCommand::add(const boost::shared_ptr<Note> note)
709 //cerr << "MEC: apply" << endl;
710 _removed_notes.remove(note);
711 _added_notes.push_back(note);
714 void MidiModel::DeltaCommand::remove(const boost::shared_ptr<Note> note)
716 //cerr << "MEC: remove" << endl;
717 _added_notes.remove(note);
718 _removed_notes.push_back(note);
721 void MidiModel::DeltaCommand::operator()()
723 // This could be made much faster by using a priority_queue for added and
724 // removed notes (or sort here), and doing a single iteration over _model
726 // Need to reset iterator to drop the read lock it holds, or we'll deadlock
727 const bool reset_iter = (_model->_read_iter.locked());
728 const double iter_time = _model->_read_iter->time();
731 _model->_read_iter = _model->end(); // drop read lock
733 assert( ! _model->_read_iter.locked());
735 _model->write_lock();
737 for (std::list< boost::shared_ptr<Note> >::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i)
738 _model->add_note_unlocked(*i);
740 for (std::list< boost::shared_ptr<Note> >::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i)
741 _model->remove_note_unlocked(*i);
743 _model->write_unlock();
746 _model->_read_iter = const_iterator(*_model.get(), iter_time);
748 _model->ContentsChanged(); /* EMIT SIGNAL */
751 void MidiModel::DeltaCommand::undo()
753 // This could be made much faster by using a priority_queue for added and
754 // removed notes (or sort here), and doing a single iteration over _model
756 // Need to reset iterator to drop the read lock it holds, or we'll deadlock
757 const bool reset_iter = (_model->_read_iter.locked());
758 const double iter_time = _model->_read_iter->time();
761 _model->_read_iter = _model->end(); // drop read lock
763 assert( ! _model->_read_iter.locked());
765 _model->write_lock();
767 for (std::list< boost::shared_ptr<Note> >::iterator i = _added_notes.begin(); i
768 != _added_notes.end(); ++i)
769 _model->remove_note_unlocked(*i);
771 for (std::list< boost::shared_ptr<Note> >::iterator i =
772 _removed_notes.begin(); i != _removed_notes.end(); ++i)
773 _model->add_note_unlocked(*i);
775 _model->write_unlock();
778 _model->_read_iter = const_iterator(*_model.get(), iter_time);
780 _model->ContentsChanged(); /* EMIT SIGNAL */
783 XMLNode & MidiModel::DeltaCommand::marshal_note(const boost::shared_ptr<Note> note)
785 XMLNode *xml_note = new XMLNode("note");
786 ostringstream note_str(ios::ate);
787 note_str << int(note->note());
788 xml_note->add_property("note", note_str.str());
790 ostringstream channel_str(ios::ate);
791 channel_str << int(note->channel());
792 xml_note->add_property("channel", channel_str.str());
794 ostringstream time_str(ios::ate);
795 time_str << int(note->time());
796 xml_note->add_property("time", time_str.str());
798 ostringstream duration_str(ios::ate);
799 duration_str <<(unsigned int) note->duration();
800 xml_note->add_property("duration", duration_str.str());
802 ostringstream velocity_str(ios::ate);
803 velocity_str << (unsigned int) note->velocity();
804 xml_note->add_property("velocity", velocity_str.str());
809 boost::shared_ptr<Note> MidiModel::DeltaCommand::unmarshal_note(XMLNode *xml_note)
812 istringstream note_str(xml_note->property("note")->value());
815 unsigned int channel;
816 istringstream channel_str(xml_note->property("channel")->value());
817 channel_str >> channel;
820 istringstream time_str(xml_note->property("time")->value());
823 unsigned int duration;
824 istringstream duration_str(xml_note->property("duration")->value());
825 duration_str >> duration;
827 unsigned int velocity;
828 istringstream velocity_str(xml_note->property("velocity")->value());
829 velocity_str >> velocity;
831 boost::shared_ptr<Note> note_ptr(new Note(channel, time, duration, note, velocity));
835 #define ADDED_NOTES_ELEMENT "added_notes"
836 #define REMOVED_NOTES_ELEMENT "removed_notes"
837 #define DELTA_COMMAND_ELEMENT "DeltaCommand"
839 int MidiModel::DeltaCommand::set_state(const XMLNode& delta_command)
841 if (delta_command.name() != string(DELTA_COMMAND_ELEMENT)) {
845 _added_notes.clear();
846 XMLNode *added_notes = delta_command.child(ADDED_NOTES_ELEMENT);
847 XMLNodeList notes = added_notes->children();
848 transform(notes.begin(), notes.end(), back_inserter(_added_notes),
849 sigc::mem_fun(*this, &DeltaCommand::unmarshal_note));
851 _removed_notes.clear();
852 XMLNode *removed_notes = delta_command.child(REMOVED_NOTES_ELEMENT);
853 notes = removed_notes->children();
854 transform(notes.begin(), notes.end(), back_inserter(_removed_notes),
855 sigc::mem_fun(*this, &DeltaCommand::unmarshal_note));
860 XMLNode& MidiModel::DeltaCommand::get_state()
862 XMLNode *delta_command = new XMLNode(DELTA_COMMAND_ELEMENT);
863 delta_command->add_property("midi_source", _model->midi_source()->id().to_s());
865 XMLNode *added_notes = delta_command->add_child(ADDED_NOTES_ELEMENT);
866 for_each(_added_notes.begin(), _added_notes.end(), sigc::compose(
867 sigc::mem_fun(*added_notes, &XMLNode::add_child_nocopy),
868 sigc::mem_fun(*this, &DeltaCommand::marshal_note)));
870 XMLNode *removed_notes = delta_command->add_child(REMOVED_NOTES_ELEMENT);
871 for_each(_removed_notes.begin(), _removed_notes.end(), sigc::compose(
872 sigc::mem_fun(*removed_notes, &XMLNode::add_child_nocopy),
873 sigc::mem_fun(*this, &DeltaCommand::marshal_note)));
875 return *delta_command;
878 struct EventTimeComparator {
879 typedef const MIDI::Event* value_type;
880 inline bool operator()(const MIDI::Event* a, const MIDI::Event* b) const {
881 return a->time() >= b->time();
885 /** Write the model to a MidiSource (i.e. save the model).
886 * This is different from manually using read to write to a source in that
887 * note off events are written regardless of the track mode. This is so the
888 * user can switch a recorded track (with note durations from some instrument)
889 * to percussive, save, reload, then switch it back to sustained without
890 * destroying the original note durations.
892 bool MidiModel::write_to(boost::shared_ptr<MidiSource> source)
896 const NoteMode old_note_mode = _note_mode;
897 _note_mode = Sustained;
899 for (const_iterator i = begin(); i != end(); ++i)
900 source->append_event_unlocked(Frames, *i);
902 _note_mode = old_note_mode;
910 XMLNode& MidiModel::get_state()
912 XMLNode *node = new XMLNode("MidiModel");