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.
23 #include <pbd/enumwriter.h>
24 #include <ardour/midi_model.h>
25 #include <ardour/midi_events.h>
26 #include <ardour/midi_source.h>
27 #include <ardour/types.h>
28 #include <ardour/session.h>
31 using namespace ARDOUR;
35 MidiModel::Note::Note(double t, double d, uint8_t n, uint8_t v)
36 : _on_event(t, 3, NULL, true)
37 , _off_event(t + d, 3, NULL, true)
39 _on_event.buffer()[0] = MIDI_CMD_NOTE_ON;
40 _on_event.buffer()[1] = n;
41 _on_event.buffer()[2] = v;
43 _off_event.buffer()[0] = MIDI_CMD_NOTE_OFF;
44 _off_event.buffer()[1] = n;
45 _off_event.buffer()[2] = 0x40;
48 assert(duration() == d);
50 assert(velocity() == v);
54 MidiModel::Note::Note(const Note& copy)
55 : _on_event(copy._on_event, true)
56 , _off_event(copy._off_event, true)
59 assert(copy._on_event.size == 3);
60 _on_event.buffer = _on_event_buffer;
61 memcpy(_on_event_buffer, copy._on_event_buffer, 3);
63 assert(copy._off_event.size == 3);
64 _off_event.buffer = _off_event_buffer;
65 memcpy(_off_event_buffer, copy._off_event_buffer, 3);
68 assert(time() == copy.time());
69 assert(end_time() == copy.end_time());
70 assert(note() == copy.note());
71 assert(velocity() == copy.velocity());
72 assert(duration() == copy.duration());
76 const MidiModel::Note&
77 MidiModel::Note::operator=(const Note& copy)
79 _on_event = copy._on_event;
80 _off_event = copy._off_event;
81 /*_on_event.time = copy._on_event.time;
82 assert(copy._on_event.size == 3);
83 memcpy(_on_event_buffer, copy._on_event_buffer, 3);
85 _off_event.time = copy._off_event.time;
86 assert(copy._off_event.size == 3);
87 memcpy(_off_event_buffer, copy._off_event_buffer, 3);
90 assert(time() == copy.time());
91 assert(end_time() == copy.end_time());
92 assert(note() == copy.note());
93 assert(velocity() == copy.velocity());
94 assert(duration() == copy.duration());
101 MidiModel::MidiModel(Session& s, size_t size)
104 , _note_mode(Sustained)
107 , _active_notes(LaterNoteEndComparator())
112 /** Read events in frame range \a start .. \a start+cnt into \a dst,
113 * adding \a stamp_offset to each event's timestamp.
114 * \return number of events written to \a dst
117 MidiModel::read (MidiRingBuffer& dst, nframes_t start, nframes_t nframes, nframes_t stamp_offset) const
119 size_t read_events = 0;
121 /* FIXME: cache last lookup value to avoid O(n) search every time */
123 if (_note_mode == Sustained) {
125 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n) {
127 while ( ! _active_notes.empty() ) {
128 const Note* const earliest_off = _active_notes.top();
129 const MidiEvent& off_ev = earliest_off->off_event();
130 if (off_ev.time() < start + nframes && off_ev.time() <= n->time()) {
131 dst.write(off_ev.time() + stamp_offset, off_ev.size(), off_ev.buffer());
139 if (n->time() >= start + nframes)
143 if (n->time() >= start) {
144 const MidiEvent& on_ev = n->on_event();
145 dst.write(on_ev.time() + stamp_offset, on_ev.size(), on_ev.buffer());
146 _active_notes.push(&(*n));
152 // Write any trailing note offs
153 while ( ! _active_notes.empty() ) {
154 const Note* const earliest_off = _active_notes.top();
155 const MidiEvent& off_ev = earliest_off->off_event();
156 if (off_ev.time() < start + nframes) {
157 dst.write(off_ev.time() + stamp_offset, off_ev.size(), off_ev.buffer());
167 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n) {
169 if (n->time() >= start) {
170 if (n->time() < start + nframes) {
171 const MidiEvent& ev = n->on_event();
172 dst.write(ev.time() + stamp_offset, ev.size(), ev.buffer());
185 /** Begin a write of events to the model.
187 * If \a mode is Sustained, complete notes with duration are constructed as note
188 * on/off events are received. Otherwise (Percussive), only note on events are
189 * stored; note off events are discarded entirely and all contained notes will
193 MidiModel::start_write()
195 //cerr << "MM START WRITE, MODE = " << enum_2_string(_note_mode) << endl;
196 _write_notes.clear();
202 /** Finish a write of events to the model.
204 * If \a delete_stuck is true and the current mode is Sustained, note on events
205 * that were never resolved with a corresonding note off will be deleted.
206 * Otherwise they will remain as notes with duration 0.
209 MidiModel::end_write(bool delete_stuck)
213 //cerr << "MM END WRITE: " << _notes.size() << " STUCK NOTES\n";
215 if (_note_mode == Sustained && delete_stuck) {
216 for (Notes::iterator n = _notes.begin(); n != _notes.end() ; ) {
217 if (n->duration() == 0) {
218 cerr << "WARNING: Stuck note lost: " << n->note() << endl;
226 _write_notes.clear();
231 /** Append contents of \a buf to model. NOT realtime safe.
233 * Timestamps of events in \a buf are expected to be relative to
234 * the start of this model (t=0) and MUST be monotonically increasing
235 * and MUST be >= the latest event currently in the model.
237 * Events in buf are deep copied.
240 MidiModel::append(const MidiBuffer& buf)
246 for (MidiBuffer::const_iterator i = buf.begin(); i != buf.end(); ++i) {
247 const MidiEvent& ev = *i;
249 assert(_notes.empty() || ev.time() >= _notes.back().time());
251 if (ev.type() == MIDI_CMD_NOTE_ON)
252 append_note_on(ev.time(), ev.note(), ev.velocity());
253 else if (ev.type() == MIDI_CMD_NOTE_OFF)
254 append_note_off(ev.time(), ev.note());
257 _lock.writer_unlock();
261 /** Append \a in_event to model. NOT realtime safe.
263 * Timestamps of events in \a buf are expected to be relative to
264 * the start of this model (t=0) and MUST be monotonically increasing
265 * and MUST be >= the latest event currently in the model.
268 MidiModel::append(double time, size_t size, const Byte* buf)
270 assert(_notes.empty() || time >= _notes.back().time());
273 if ((buf[0] & 0xF0) == MIDI_CMD_NOTE_ON)
274 append_note_on(time, buf[1], buf[2]);
275 else if ((buf[0] & 0xF0) == MIDI_CMD_NOTE_OFF)
276 append_note_off(time, buf[1]);
281 MidiModel::append_note_on(double time, uint8_t note_num, uint8_t velocity)
284 _notes.push_back(Note(time, 0, note_num, velocity));
285 if (_note_mode == Sustained) {
286 //cerr << "MM Sustained: Appending active note on " << (unsigned)(uint8_t)note_num << endl;
287 _write_notes.push_back(_notes.size() - 1);
289 //cerr << "MM Percussive: NOT appending active note on" << endl;
295 MidiModel::append_note_off(double time, uint8_t note_num)
298 if (_note_mode == Percussive) {
299 //cerr << "MM Ignoring note off (percussive mode)" << endl;
302 //cerr << "MM Attempting to resolve note off " << (unsigned)(uint8_t)note_num << endl;
305 /* FIXME: make _write_notes fixed size (127 noted) for speed */
307 /* FIXME: note off velocity for that one guy out there who actually has
308 * keys that send it */
310 for (WriteNotes::iterator n = _write_notes.begin(); n != _write_notes.end(); ++n) {
311 Note& note = _notes[*n];
312 //cerr << (unsigned)(uint8_t)note.note() << " ? " << (unsigned)note_num << endl;
313 if (note.note() == note_num) {
314 assert(time > note.time());
315 note.set_duration(time - note.time());
316 _write_notes.erase(n);
317 //cerr << "MM resolved note, duration: " << note.duration() << endl;
325 MidiModel::add_note_unlocked(const Note& note)
327 //cerr << "MidiModel " << this << " add note " << (int)note.note() << " @ " << note.time() << endl;
328 Notes::iterator i = upper_bound(_notes.begin(), _notes.end(), note, note_time_comparator);
329 _notes.insert(i, note);
334 MidiModel::remove_note_unlocked(const Note& note)
336 //cerr << "MidiModel " << this << " remove note " << (int)note.note() << " @ " << note.time() << endl;
337 Notes::iterator n = find(_notes.begin(), _notes.end(), note);
338 if (n != _notes.end())
342 /** Slow! for debugging only. */
344 MidiModel::is_sorted() const
347 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n)
357 /** Start a new command.
359 * This has no side-effects on the model or Session, the returned command
360 * can be held on to for as long as the caller wishes, or discarded without
361 * formality, until apply_command is called and ownership is taken.
363 MidiModel::DeltaCommand*
364 MidiModel::new_delta_command(const string name)
366 DeltaCommand* cmd = new DeltaCommand(*this, name);
373 * Ownership of cmd is taken, it must not be deleted by the caller.
374 * The command will constitute one item on the undo stack.
377 MidiModel::apply_command(Command* cmd)
379 _session.begin_reversible_command(cmd->name());
382 _session.commit_reversible_command(cmd);
391 MidiModel::DeltaCommand::add(const Note& note)
393 //cerr << "MEC: apply" << endl;
395 _removed_notes.remove(note);
396 _added_notes.push_back(note);
401 MidiModel::DeltaCommand::remove(const Note& note)
403 //cerr << "MEC: remove" << endl;
405 _added_notes.remove(note);
406 _removed_notes.push_back(note);
411 MidiModel::DeltaCommand::operator()()
413 // This could be made much faster by using a priority_queue for added and
414 // removed notes (or sort here), and doing a single iteration over _model
416 _model._lock.writer_lock();
418 for (std::list<Note>::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i)
419 _model.add_note_unlocked(*i);
421 for (std::list<Note>::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i)
422 _model.remove_note_unlocked(*i);
424 _model._lock.writer_unlock();
426 _model.ContentsChanged(); /* EMIT SIGNAL */
431 MidiModel::DeltaCommand::undo()
433 // This could be made much faster by using a priority_queue for added and
434 // removed notes (or sort here), and doing a single iteration over _model
436 _model._lock.writer_lock();
438 for (std::list<Note>::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i)
439 _model.remove_note_unlocked(*i);
441 for (std::list<Note>::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i)
442 _model.add_note_unlocked(*i);
444 _model._lock.writer_unlock();
446 _model.ContentsChanged(); /* EMIT SIGNAL */
451 MidiModel::write_to(boost::shared_ptr<MidiSource> source)
453 //cerr << "Writing model to " << source->name() << endl;
455 /* This could be done using a temporary MidiRingBuffer and using
456 * MidiModel::read and MidiSource::write, but this is more efficient
457 * and doesn't require any buffer size assumptions (ie it's worth
458 * the code duplication).
460 * This is also different from read in that note off events are written
461 * regardless of the track mode. This is so the user can switch a
462 * recorded track (with note durations from some instrument) to percussive,
463 * save, reload, then switch it back to sustained preserving the original
468 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n) {
469 const MidiEvent& ev = n->on_event();
470 source->append_event_unlocked(ev);
475 LaterNoteEndComparator cmp;
476 ActiveNotes active_notes(cmp);
479 for (Notes::const_iterator n = _notes.begin(); n != _notes.end(); ++n) {
481 // Write any pending note offs earlier than this note on
482 while ( ! active_notes.empty() ) {
483 const Note* const earliest_off = active_notes.top();
484 const MidiEvent& off_ev = earliest_off->off_event();
485 if (off_ev.time() <= n->time()) {
486 source->append_event_unlocked(off_ev);
493 // Write this note on
494 source->append_event_unlocked(n->on_event());
495 if (n->duration() > 0)
496 active_notes.push(&(*n));
499 // Write any trailing note offs
500 while ( ! active_notes.empty() ) {
501 source->append_event_unlocked(active_notes.top()->off_event());
507 _lock.reader_unlock();