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 , _event(new MIDI::Event(0.0, 4, NULL, true))
63 , _is_end( (t == DBL_MAX) || model.empty())
66 //cerr << "Created MIDI iterator @ " << t << " (is end: " << _is_end << ")" << endl;
73 _note_iter = model.notes().end();
74 // find first note which begins after t
75 for (MidiModel::Notes::const_iterator i = model.notes().begin(); i != model.notes().end(); ++i) {
76 if ((*i)->time() >= t) {
82 MidiControlIterator earliest_control(boost::shared_ptr<AutomationList>(), DBL_MAX, 0.0);
84 _control_iters.reserve(model.controls().size());
86 // this loop finds the earliest control event available
87 for (Automatable::Controls::const_iterator i = model.controls().begin();
88 i != model.controls().end(); ++i) {
91 i->first.type() == MidiCCAutomation ||
92 i->first.type() == MidiPgmChangeAutomation ||
93 i->first.type() == MidiPitchBenderAutomation ||
94 i->first.type() == MidiChannelAftertouchAutomation);
97 bool ret = i->second->list()->rt_safe_earliest_event_unlocked(t, DBL_MAX, x, y);
99 //cerr << "MIDI Iterator: CC " << i->first.id() << " (size " << i->second->list()->size()
100 // << ") has no events past " << t << endl;
105 assert(y >= i->first.min());
106 assert(y <= i->first.max());
108 const MidiControlIterator new_iter(i->second->list(), x, y);
110 //cerr << "MIDI Iterator: CC " << i->first.id() << " added (" << x << ", " << y << ")" << endl;
111 _control_iters.push_back(new_iter);
113 // if the x of the current control is less than earliest_control
114 // we have a new earliest_control
115 if (x < earliest_control.x) {
116 earliest_control = new_iter;
117 _control_iter = _control_iters.end();
119 // now _control_iter points to the last Element in _control_iters
123 if (_note_iter != model.notes().end()) {
124 *_event = (*_note_iter)->on_event();
127 double time = DBL_MAX;
128 // in case we have no notes in the region, we still want to get controller messages
130 time = _event->time();
131 // if the note is going to make it this turn, advance _note_iter
132 if (earliest_control.x > time) {
133 _active_notes.push(*_note_iter);
138 // <=, because we probably would want to send control events first
139 if (earliest_control.automation_list.get() && earliest_control.x <= time) {
140 model.control_to_midi_event(_event, earliest_control);
142 _control_iter = _control_iters.end();
145 if ( (! _event.get()) || _event->size() == 0) {
146 //cerr << "Created MIDI iterator @ " << t << " is at end." << endl;
149 // eliminate possible race condition here (ugly)
150 static Glib::Mutex mutex;
151 Glib::Mutex::Lock lock(mutex);
153 _model->read_unlock();
157 //printf("New MIDI Iterator = %X @ %lf\n", _event->type(), _event->time());
161 MidiModel::const_iterator::~const_iterator()
164 _model->read_unlock();
168 const MidiModel::const_iterator& MidiModel::const_iterator::operator++()
171 throw std::logic_error("Attempt to iterate past end of MidiModel");
174 /*cerr << "const_iterator::operator++: _event type:" << hex << "0x" << int(_event->type())
175 << " buffer: 0x" << int(_event->buffer()[0]) << " 0x" << int(_event->buffer()[1])
176 << " 0x" << int(_event->buffer()[2]) << endl;*/
178 if (! (_event->is_note() || _event->is_cc() || _event->is_pgm_change() || _event->is_pitch_bender() || _event->is_channel_aftertouch()) ) {
179 cerr << "FAILED event buffer: " << hex << int(_event->buffer()[0]) << int(_event->buffer()[1]) << int(_event->buffer()[2]) << endl;
181 assert((_event->is_note() || _event->is_cc() || _event->is_pgm_change() || _event->is_pitch_bender() || _event->is_channel_aftertouch()));
183 // Increment past current control event
184 if (!_event->is_note() && _control_iter != _control_iters.end() && _control_iter->automation_list.get()) {
185 double x = 0.0, y = 0.0;
186 const bool ret = _control_iter->automation_list->rt_safe_earliest_event_unlocked(
187 _control_iter->x, DBL_MAX, x, y, false);
188 //cerr << "control_iter x:" << _control_iter->x << " y:" << _control_iter->y << endl;
191 //cerr << "Incremented " << _control_iter->automation_list->parameter().id() << " to " << x << endl;
192 _control_iter->x = x;
193 _control_iter->y = y;
195 cerr << "Hit end of " << _control_iter->automation_list->parameter().id() << endl;
196 _control_iter->automation_list.reset();
197 _control_iter->x = DBL_MAX;
201 const std::vector<MidiControlIterator>::iterator old_control_iter = _control_iter;
202 _control_iter = _control_iters.begin();
204 // find the _control_iter with the earliest event time
205 for (std::vector<MidiControlIterator>::iterator i = _control_iters.begin();
206 i != _control_iters.end(); ++i) {
207 if (i->x < _control_iter->x) {
212 enum Type {NIL, NOTE_ON, NOTE_OFF, AUTOMATION};
217 // Next earliest note on
218 if (_note_iter != _model->notes().end()) {
220 t = (*_note_iter)->time();
223 // Use the next earliest note off iff it's earlier than the note on
224 if (_model->note_mode() == Sustained && (! _active_notes.empty())) {
225 if (type == NIL || _active_notes.top()->end_time() <= (*_note_iter)->time()) {
227 t = _active_notes.top()->end_time();
231 // Use the next earliest controller iff it's earlier than the note event
232 if (_control_iter != _control_iters.end() && _control_iter->x != DBL_MAX /*&& _control_iter != old_control_iter */) {
233 if (type == NIL || _control_iter->x < t) {
238 if (type == NOTE_ON) {
239 //cerr << "********** MIDI Iterator = note on" << endl;
240 *_event = (*_note_iter)->on_event();
241 _active_notes.push(*_note_iter);
243 } else if (type == NOTE_OFF) {
244 //cerr << "********** MIDI Iterator = note off" << endl;
245 *_event = (*_note_iter)->off_event();
247 } else if (type == AUTOMATION) {
248 //cerr << "********** MIDI Iterator = Automation" << endl;
249 _model->control_to_midi_event(_event, *_control_iter);
251 //cerr << "********** MIDI Iterator = End" << endl;
255 assert(_is_end || _event->size() > 0);
260 bool MidiModel::const_iterator::operator==(const const_iterator& other) const
262 if (_is_end || other._is_end) {
263 return (_is_end == other._is_end);
265 return (_event == other._event);
269 MidiModel::const_iterator& MidiModel::const_iterator::operator=(const const_iterator& other)
271 if (_locked && _model != other._model) {
272 _model->read_unlock();
275 _model = other._model;
276 _event = boost::shared_ptr<MIDI::Event>(new MIDI::Event(*other._event, true));
277 _active_notes = other._active_notes;
278 _is_end = other._is_end;
279 _locked = other._locked;
280 _note_iter = other._note_iter;
281 _control_iters = other._control_iters;
282 size_t index = other._control_iter - other._control_iters.begin();
283 _control_iter = _control_iters.begin() + index;
290 MidiModel::MidiModel(MidiSource *s, size_t size)
291 : Automatable(s->session(), "midi model")
293 , _note_mode(Sustained)
296 , _end_iter(*this, DBL_MAX)
297 , _next_read(UINT32_MAX)
298 , _read_iter(*this, DBL_MAX)
301 assert(_end_iter._is_end);
302 assert( ! _end_iter._locked);
305 /** Read events in frame range \a start .. \a start+cnt into \a dst,
306 * adding \a stamp_offset to each event's timestamp.
307 * \return number of events written to \a dst
309 size_t MidiModel::read(MidiRingBuffer& dst, nframes_t start, nframes_t nframes,
310 nframes_t stamp_offset, nframes_t negative_stamp_offset) const
312 //cerr << this << " MM::read @ " << start << " frames: " << nframes << " -> " << stamp_offset << endl;
313 //cerr << this << " MM # notes: " << n_notes() << endl;
315 size_t read_events = 0;
317 if (start != _next_read) {
318 _read_iter = const_iterator(*this, (double)start);
319 //cerr << "Repositioning iterator from " << _next_read << " to " << start << endl;
321 //cerr << "Using cached iterator at " << _next_read << endl;
324 _next_read = start + nframes;
326 while (_read_iter != end() && _read_iter->time() < start + nframes) {
327 assert(_read_iter->size() > 0);
328 assert(_read_iter->buffer());
329 dst.write(_read_iter->time() + stamp_offset - negative_stamp_offset,
331 _read_iter->buffer());
333 //cerr << this << " MidiModel::read event @ " << _read_iter->time()
334 //<< " type: " << hex << int(_read_iter->type()) << dec
335 //<< " note: " << int(_read_iter->note())
336 //<< " velocity: " << int(_read_iter->velocity())
346 /** Write the controller event pointed to by \a iter to \a ev.
347 * The buffer of \a ev will be allocated or resized as necessary.
348 * \return true on success
351 MidiModel::control_to_midi_event(boost::shared_ptr<MIDI::Event> ev, const MidiControlIterator& iter) const
353 assert(iter.automation_list.get());
355 switch (iter.automation_list->parameter().type()) {
356 case MidiCCAutomation:
357 assert(iter.automation_list.get());
358 assert(iter.automation_list->parameter().channel() < 16);
359 assert(iter.automation_list->parameter().id() <= INT8_MAX);
360 assert(iter.y <= INT8_MAX);
364 ev->buffer()[0] = MIDI_CMD_CONTROL + iter.automation_list->parameter().channel();
365 ev->buffer()[1] = (Byte)iter.automation_list->parameter().id();
366 ev->buffer()[2] = (Byte)iter.y;
369 case MidiPgmChangeAutomation:
370 assert(iter.automation_list.get());
371 assert(iter.automation_list->parameter().channel() < 16);
372 assert(iter.automation_list->parameter().id() == 0);
373 assert(iter.y <= INT8_MAX);
377 ev->buffer()[0] = MIDI_CMD_PGM_CHANGE + iter.automation_list->parameter().channel();
378 ev->buffer()[1] = (Byte)iter.y;
381 case MidiPitchBenderAutomation:
382 assert(iter.automation_list.get());
383 assert(iter.automation_list->parameter().channel() < 16);
384 assert(iter.automation_list->parameter().id() == 0);
385 assert(iter.y < (1<<14));
389 ev->buffer()[0] = MIDI_CMD_BENDER + iter.automation_list->parameter().channel();
390 ev->buffer()[1] = ((Byte)iter.y) & 0x7F; // LSB
391 ev->buffer()[2] = (((Byte)iter.y) >> 7) & 0x7F; // MSB
394 case MidiChannelAftertouchAutomation:
395 assert(iter.automation_list.get());
396 assert(iter.automation_list->parameter().channel() < 16);
397 assert(iter.automation_list->parameter().id() == 0);
398 assert(iter.y <= INT8_MAX);
403 = MIDI_CMD_CHANNEL_PRESSURE + iter.automation_list->parameter().channel();
404 ev->buffer()[1] = (Byte)iter.y;
415 /** Clear all events from the model.
417 void MidiModel::clear()
424 _lock.writer_unlock();
428 /** Begin a write of events to the model.
430 * If \a mode is Sustained, complete notes with duration are constructed as note
431 * on/off events are received. Otherwise (Percussive), only note on events are
432 * stored; note off events are discarded entirely and all contained notes will
435 void MidiModel::start_write()
437 //cerr << "MM " << this << " START WRITE, MODE = " << enum_2_string(_note_mode) << endl;
440 for (int i = 0; i < 16; ++i)
441 _write_notes[i].clear();
443 _dirty_automations.clear();
447 /** Finish a write of events to the model.
449 * If \a delete_stuck is true and the current mode is Sustained, note on events
450 * that were never resolved with a corresonding note off will be deleted.
451 * Otherwise they will remain as notes with duration 0.
453 void MidiModel::end_write(bool delete_stuck)
458 //cerr << "MM " << this << " END WRITE: " << _notes.size() << " NOTES\n";
460 if (_note_mode == Sustained && delete_stuck) {
461 for (Notes::iterator n = _notes.begin(); n != _notes.end() ;) {
462 if ((*n)->duration() == 0) {
463 cerr << "WARNING: Stuck note lost: " << (*n)->note() << endl;
465 // we have to break here because erase invalidates the iterator
473 for (int i = 0; i < 16; ++i) {
474 if (!_write_notes[i].empty()) {
475 cerr << "WARNING: MidiModel::end_write: Channel " << i << " has "
476 << _write_notes[i].size() << " stuck notes" << endl;
478 _write_notes[i].clear();
481 for (AutomationLists::const_iterator i = _dirty_automations.begin(); i != _dirty_automations.end(); ++i) {
483 (*i)->lookup_cache().left = -1;
484 (*i)->search_cache().left = -1;
491 /** Append \a in_event to model. NOT realtime safe.
493 * Timestamps of events in \a buf are expected to be relative to
494 * the start of this model (t=0) and MUST be monotonically increasing
495 * and MUST be >= the latest event currently in the model.
497 void MidiModel::append(const MIDI::Event& ev)
502 assert(_notes.empty() || ev.time() >= _notes.back()->time());
505 if (ev.is_note_on()) {
506 append_note_on_unlocked(ev.channel(), ev.time(), ev.note(),
508 } else if (ev.is_note_off()) {
509 append_note_off_unlocked(ev.channel(), ev.time(), ev.note());
510 } else if (ev.is_cc()) {
511 append_automation_event_unlocked(MidiCCAutomation, ev.channel(),
512 ev.time(), ev.cc_number(), ev.cc_value());
513 } else if (ev.is_pgm_change()) {
514 append_automation_event_unlocked(MidiPgmChangeAutomation, ev.channel(),
515 ev.time(), ev.pgm_number(), 0);
516 } else if (ev.is_pitch_bender()) {
517 append_automation_event_unlocked(MidiPitchBenderAutomation,
518 ev.channel(), ev.time(), ev.pitch_bender_lsb(),
519 ev.pitch_bender_msb());
520 } else if (ev.is_channel_aftertouch()) {
521 append_automation_event_unlocked(MidiChannelAftertouchAutomation,
522 ev.channel(), ev.time(), ev.channel_aftertouch(), 0);
524 printf("WARNING: MidiModel: Unknown event type %X\n", ev.type());
530 void MidiModel::append_note_on_unlocked(uint8_t chan, double time,
531 uint8_t note_num, uint8_t velocity)
533 /*cerr << "MidiModel " << this << " chan " << (int)chan <<
534 " note " << (int)note_num << " on @ " << time << endl;*/
540 boost::shared_ptr<Note> new_note(new Note(chan, time, 0, note_num, velocity));
541 _notes.push_back(new_note);
542 if (_note_mode == Sustained) {
543 //cerr << "MM Sustained: Appending active note on " << (unsigned)(uint8_t)note_num << endl;
544 _write_notes[chan].push_back(_notes.size() - 1);
546 cerr << "MM Percussive: NOT appending active note on" << endl;
550 void MidiModel::append_note_off_unlocked(uint8_t chan, double time,
553 /*cerr << "MidiModel " << this << " chan " << (int)chan <<
554 " note " << (int)note_num << " off @ " << time << endl;*/
560 if (_note_mode == Percussive) {
561 cerr << "MidiModel Ignoring note off (percussive mode)" << endl;
565 /* FIXME: make _write_notes fixed size (127 noted) for speed */
567 /* FIXME: note off velocity for that one guy out there who actually has
568 * keys that send it */
570 bool resolved = false;
572 for (WriteNotes::iterator n = _write_notes[chan].begin(); n
573 != _write_notes[chan].end(); ++n) {
574 Note& note = *_notes[*n].get();
575 //cerr << (unsigned)(uint8_t)note.note() << " ? " << (unsigned)note_num << endl;
576 if (note.note() == note_num) {
577 assert(time >= note.time());
578 note.set_duration(time - note.time());
579 _write_notes[chan].erase(n);
580 //cerr << "MM resolved note, duration: " << note.duration() << endl;
587 cerr << "MidiModel " << this << " spurious note off chan " << (int)chan
588 << ", note " << (int)note_num << " @ " << time << endl;
592 void MidiModel::append_automation_event_unlocked(AutomationType type,
593 uint8_t chan, double time, uint8_t first_byte, uint8_t second_byte)
595 //cerr << "MidiModel " << this << " chan " << (int)chan <<
596 // " CC " << (int)number << " = " << (int)value << " @ " << time << endl;
606 case MidiCCAutomation:
608 value = double(second_byte);
610 case MidiChannelAftertouchAutomation:
611 case MidiPgmChangeAutomation:
613 value = double(first_byte);
615 case MidiPitchBenderAutomation:
617 value = double((0x7F & second_byte) << 7 | (0x7F & first_byte));
623 Parameter param(type, id, chan);
624 boost::shared_ptr<AutomationControl> control = Automatable::control(param, true);
625 control->list()->rt_add(time, value);
628 void MidiModel::add_note_unlocked(const boost::shared_ptr<Note> note)
630 //cerr << "MidiModel " << this << " add note " << (int)note.note() << " @ " << note.time() << endl;
632 Notes::iterator i = upper_bound(_notes.begin(), _notes.end(), note,
633 note_time_comparator);
634 _notes.insert(i, note);
637 void MidiModel::remove_note_unlocked(const boost::shared_ptr<const Note> note)
640 //cerr << "MidiModel " << this << " remove note " << (int)note.note() << " @ " << note.time() << endl;
641 for (Notes::iterator n = _notes.begin(); n != _notes.end(); ++n) {
643 const Note& _note = *note;
644 // TODO: There is still the issue, that after restarting ardour
645 // persisted undo does not work, because of rounding errors in the
646 // event times after saving/restoring to/from MIDI files
647 cerr << "======================================= " << endl;
648 cerr << int(_n.note()) << "@" << int(_n.time()) << "[" << int(_n.channel()) << "] --" << int(_n.duration()) << "-- #" << int(_n.velocity()) << endl;
649 cerr << int(_note.note()) << "@" << int(_note.time()) << "[" << int(_note.channel()) << "] --" << int(_note.duration()) << "-- #" << int(_note.velocity()) << endl;
650 cerr << "Equal: " << bool(_n == _note) << endl;
651 cerr << endl << endl;
654 // we have to break here, because erase invalidates all iterators, ie. n itself
660 /** Slow! for debugging only. */
662 bool MidiModel::is_sorted() const {
664 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n)
665 if ((*n)->time() < t)
674 /** Start a new command.
676 * This has no side-effects on the model or Session, the returned command
677 * can be held on to for as long as the caller wishes, or discarded without
678 * formality, until apply_command is called and ownership is taken.
680 MidiModel::DeltaCommand* MidiModel::new_delta_command(const string name)
682 DeltaCommand* cmd = new DeltaCommand(_midi_source->model(), name);
688 * Ownership of cmd is taken, it must not be deleted by the caller.
689 * The command will constitute one item on the undo stack.
691 void MidiModel::apply_command(Command* cmd)
693 _session.begin_reversible_command(cmd->name());
696 _session.commit_reversible_command(cmd);
702 MidiModel::DeltaCommand::DeltaCommand(boost::shared_ptr<MidiModel> m,
703 const std::string& name)
710 MidiModel::DeltaCommand::DeltaCommand(boost::shared_ptr<MidiModel> m,
717 void MidiModel::DeltaCommand::add(const boost::shared_ptr<Note> note)
719 //cerr << "MEC: apply" << endl;
720 _removed_notes.remove(note);
721 _added_notes.push_back(note);
724 void MidiModel::DeltaCommand::remove(const boost::shared_ptr<Note> note)
726 //cerr << "MEC: remove" << endl;
727 _added_notes.remove(note);
728 _removed_notes.push_back(note);
731 void MidiModel::DeltaCommand::operator()()
733 // This could be made much faster by using a priority_queue for added and
734 // removed notes (or sort here), and doing a single iteration over _model
736 // Need to reset iterator to drop the read lock it holds, or we'll deadlock
737 const bool reset_iter = (_model->_read_iter.locked());
738 double iter_time = -1.0;
741 if (_model->_read_iter.get_event_pointer().get()) {
742 iter_time = _model->_read_iter->time();
744 cerr << "MidiModel::DeltaCommand::operator(): WARNING: _read_iter points to no event" << endl;
746 _model->_read_iter = _model->end(); // drop read lock
749 assert( ! _model->_read_iter.locked());
751 _model->write_lock();
753 for (std::list< boost::shared_ptr<Note> >::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i)
754 _model->add_note_unlocked(*i);
756 for (std::list< boost::shared_ptr<Note> >::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i)
757 _model->remove_note_unlocked(*i);
759 _model->write_unlock();
761 if (reset_iter && iter_time != -1.0) {
762 _model->_read_iter = const_iterator(*_model.get(), iter_time);
765 _model->ContentsChanged(); /* EMIT SIGNAL */
768 void MidiModel::DeltaCommand::undo()
770 // This could be made much faster by using a priority_queue for added and
771 // removed notes (or sort here), and doing a single iteration over _model
773 // Need to reset iterator to drop the read lock it holds, or we'll deadlock
774 const bool reset_iter = (_model->_read_iter.locked());
775 double iter_time = -1.0;
778 if (_model->_read_iter.get_event_pointer().get()) {
779 iter_time = _model->_read_iter->time();
781 cerr << "MidiModel::DeltaCommand::undo(): WARNING: _read_iter points to no event" << endl;
783 _model->_read_iter = _model->end(); // drop read lock
786 assert( ! _model->_read_iter.locked());
788 _model->write_lock();
790 for (std::list< boost::shared_ptr<Note> >::iterator i = _added_notes.begin(); i
791 != _added_notes.end(); ++i)
792 _model->remove_note_unlocked(*i);
794 for (std::list< boost::shared_ptr<Note> >::iterator i =
795 _removed_notes.begin(); i != _removed_notes.end(); ++i)
796 _model->add_note_unlocked(*i);
798 _model->write_unlock();
800 if (reset_iter && iter_time != -1.0) {
801 _model->_read_iter = const_iterator(*_model.get(), iter_time);
804 _model->ContentsChanged(); /* EMIT SIGNAL */
807 XMLNode & MidiModel::DeltaCommand::marshal_note(const boost::shared_ptr<Note> note)
809 XMLNode *xml_note = new XMLNode("note");
810 ostringstream note_str(ios::ate);
811 note_str << int(note->note());
812 xml_note->add_property("note", note_str.str());
814 ostringstream channel_str(ios::ate);
815 channel_str << int(note->channel());
816 xml_note->add_property("channel", channel_str.str());
818 ostringstream time_str(ios::ate);
819 time_str << int(note->time());
820 xml_note->add_property("time", time_str.str());
822 ostringstream duration_str(ios::ate);
823 duration_str <<(unsigned int) note->duration();
824 xml_note->add_property("duration", duration_str.str());
826 ostringstream velocity_str(ios::ate);
827 velocity_str << (unsigned int) note->velocity();
828 xml_note->add_property("velocity", velocity_str.str());
833 boost::shared_ptr<Note> MidiModel::DeltaCommand::unmarshal_note(XMLNode *xml_note)
836 istringstream note_str(xml_note->property("note")->value());
839 unsigned int channel;
840 istringstream channel_str(xml_note->property("channel")->value());
841 channel_str >> channel;
844 istringstream time_str(xml_note->property("time")->value());
847 unsigned int duration;
848 istringstream duration_str(xml_note->property("duration")->value());
849 duration_str >> duration;
851 unsigned int velocity;
852 istringstream velocity_str(xml_note->property("velocity")->value());
853 velocity_str >> velocity;
855 boost::shared_ptr<Note> note_ptr(new Note(channel, time, duration, note, velocity));
859 #define ADDED_NOTES_ELEMENT "added_notes"
860 #define REMOVED_NOTES_ELEMENT "removed_notes"
861 #define DELTA_COMMAND_ELEMENT "DeltaCommand"
863 int MidiModel::DeltaCommand::set_state(const XMLNode& delta_command)
865 if (delta_command.name() != string(DELTA_COMMAND_ELEMENT)) {
869 _added_notes.clear();
870 XMLNode *added_notes = delta_command.child(ADDED_NOTES_ELEMENT);
871 XMLNodeList notes = added_notes->children();
872 transform(notes.begin(), notes.end(), back_inserter(_added_notes),
873 sigc::mem_fun(*this, &DeltaCommand::unmarshal_note));
875 _removed_notes.clear();
876 XMLNode *removed_notes = delta_command.child(REMOVED_NOTES_ELEMENT);
877 notes = removed_notes->children();
878 transform(notes.begin(), notes.end(), back_inserter(_removed_notes),
879 sigc::mem_fun(*this, &DeltaCommand::unmarshal_note));
884 XMLNode& MidiModel::DeltaCommand::get_state()
886 XMLNode *delta_command = new XMLNode(DELTA_COMMAND_ELEMENT);
887 delta_command->add_property("midi_source", _model->midi_source()->id().to_s());
889 XMLNode *added_notes = delta_command->add_child(ADDED_NOTES_ELEMENT);
890 for_each(_added_notes.begin(), _added_notes.end(), sigc::compose(
891 sigc::mem_fun(*added_notes, &XMLNode::add_child_nocopy),
892 sigc::mem_fun(*this, &DeltaCommand::marshal_note)));
894 XMLNode *removed_notes = delta_command->add_child(REMOVED_NOTES_ELEMENT);
895 for_each(_removed_notes.begin(), _removed_notes.end(), sigc::compose(
896 sigc::mem_fun(*removed_notes, &XMLNode::add_child_nocopy),
897 sigc::mem_fun(*this, &DeltaCommand::marshal_note)));
899 return *delta_command;
902 struct EventTimeComparator {
903 typedef const MIDI::Event* value_type;
904 inline bool operator()(const MIDI::Event& a, const MIDI::Event& b) const {
905 return a.time() >= b.time();
909 /** Write the model to a MidiSource (i.e. save the model).
910 * This is different from manually using read to write to a source in that
911 * note off events are written regardless of the track mode. This is so the
912 * user can switch a recorded track (with note durations from some instrument)
913 * to percussive, save, reload, then switch it back to sustained without
914 * destroying the original note durations.
916 bool MidiModel::write_to(boost::shared_ptr<MidiSource> source)
920 const NoteMode old_note_mode = _note_mode;
921 _note_mode = Sustained;
923 for (const_iterator i = begin(); i != end(); ++i) {
924 source->append_event_unlocked(Frames, *i);
927 _note_mode = old_note_mode;
935 XMLNode& MidiModel::get_state()
937 XMLNode *node = new XMLNode("MidiModel");