2 Copyright (C) 2006 Paul Davis
3 Author: David Robillard
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.
30 #include <glibmm/fileutils.h>
31 #include <glibmm/miscutils.h>
33 #include "pbd/xml++.h"
34 #include "pbd/pthread_utils.h"
35 #include "pbd/basename.h"
37 #include "evoral/Control.hpp"
38 #include "evoral/EventSink.hpp"
40 #include "ardour/debug.h"
41 #include "ardour/file_source.h"
42 #include "ardour/midi_channel_filter.h"
43 #include "ardour/midi_model.h"
44 #include "ardour/midi_source.h"
45 #include "ardour/midi_state_tracker.h"
46 #include "ardour/session.h"
47 #include "ardour/tempo.h"
48 #include "ardour/session_directory.h"
49 #include "ardour/source_factory.h"
53 namespace ARDOUR { template <typename T> class MidiRingBuffer; }
56 using namespace ARDOUR;
59 MidiSource::MidiSource (Session& s, string name, Source::Flag flags)
60 : Source(s, DataType::MIDI, name, flags)
62 , _model_iter_valid(false)
66 , _capture_loop_length(0)
70 MidiSource::MidiSource (Session& s, const XMLNode& node)
73 , _model_iter_valid(false)
77 , _capture_loop_length(0)
79 if (set_state (node, Stateful::loading_state_version)) {
80 throw failed_constructor();
84 MidiSource::~MidiSource ()
89 MidiSource::get_state ()
91 XMLNode& node (Source::get_state());
93 if (_captured_for.length()) {
94 node.add_property ("captured-for", _captured_for);
97 for (InterpolationStyleMap::const_iterator i = _interpolation_style.begin(); i != _interpolation_style.end(); ++i) {
98 XMLNode* child = node.add_child (X_("InterpolationStyle"));
99 child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
100 child->add_property (X_("style"), enum_2_string (i->second));
103 for (AutomationStateMap::const_iterator i = _automation_state.begin(); i != _automation_state.end(); ++i) {
104 XMLNode* child = node.add_child (X_("AutomationState"));
105 child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
106 child->add_property (X_("state"), enum_2_string (i->second));
113 MidiSource::set_state (const XMLNode& node, int /*version*/)
115 XMLProperty const * prop;
116 if ((prop = node.property ("captured-for")) != 0) {
117 _captured_for = prop->value();
120 XMLNodeList children = node.children ();
121 for (XMLNodeConstIterator i = children.begin(); i != children.end(); ++i) {
122 if ((*i)->name() == X_("InterpolationStyle")) {
123 if ((prop = (*i)->property (X_("parameter"))) == 0) {
124 error << _("Missing parameter property on InterpolationStyle") << endmsg;
127 Evoral::Parameter p = EventTypeMap::instance().from_symbol (prop->value());
129 if ((prop = (*i)->property (X_("style"))) == 0) {
130 error << _("Missing style property on InterpolationStyle") << endmsg;
133 Evoral::ControlList::InterpolationStyle s = static_cast<Evoral::ControlList::InterpolationStyle>(
134 string_2_enum (prop->value(), s));
135 set_interpolation_of (p, s);
137 } else if ((*i)->name() == X_("AutomationState")) {
138 if ((prop = (*i)->property (X_("parameter"))) == 0) {
139 error << _("Missing parameter property on AutomationState") << endmsg;
142 Evoral::Parameter p = EventTypeMap::instance().from_symbol (prop->value());
144 if ((prop = (*i)->property (X_("state"))) == 0) {
145 error << _("Missing state property on AutomationState") << endmsg;
148 AutoState s = static_cast<AutoState> (string_2_enum (prop->value(), s));
149 set_automation_state_of (p, s);
157 MidiSource::empty () const
159 return !_length_beats;
163 MidiSource::length (framepos_t pos) const
165 if (!_length_beats) {
169 BeatsFramesConverter converter(_session.tempo_map(), pos);
170 return converter.to(_length_beats);
174 MidiSource::update_length (framecnt_t)
176 // You're not the boss of me!
180 MidiSource::invalidate (const Lock& lock, std::set<Evoral::Sequence<Evoral::Beats>::WeakNotePtr>* notes)
182 _model_iter_valid = false;
183 _model_iter.invalidate(notes);
187 MidiSource::midi_read (const Lock& lm,
188 Evoral::EventSink<framepos_t>& dst,
189 framepos_t source_start,
192 Evoral::Range<framepos_t>* loop_range,
193 MidiStateTracker* tracker,
194 MidiChannelFilter* filter,
195 const std::set<Evoral::Parameter>& filtered,
197 const double start_beats) const
199 //BeatsFramesConverter converter(_session.tempo_map(), source_start);
201 const double start_qn = (pulse * 4.0) - start_beats;
203 DEBUG_TRACE (DEBUG::MidiSourceIO,
204 string_compose ("MidiSource::midi_read() %5 sstart %1 start %2 cnt %3 tracker %4\n",
205 source_start, start, cnt, tracker, name()));
208 return read_unlocked (lm, dst, source_start, start, cnt, loop_range, tracker, filter);
211 // Find appropriate model iterator
212 Evoral::Sequence<Evoral::Beats>::const_iterator& i = _model_iter;
213 const bool linear_read = _last_read_end != 0 && start == _last_read_end;
214 if (!linear_read || !_model_iter_valid) {
216 // Cached iterator is invalid, search for the first event past start
217 i = _model->begin(converter.from(start), false, filtered,
218 linear_read ? &_model->active_notes() : NULL);
219 _model_iter_valid = true;
221 _model->active_notes().clear();
224 /* hot-fix http://tracker.ardour.org/view.php?id=6541
225 * "parallel playback of linked midi regions -> no note-offs"
227 * A midi source can be used by multiple tracks simultaneously,
228 * in which case midi_read() may be called from different tracks for
229 * overlapping time-ranges.
231 * However there is only a single iterator for a given midi-source.
232 * This results in every midi_read() performing a seek.
234 * If seeking is performed with
235 * _model->begin(converter.from(start),...)
236 * the model is used for seeking. That method seeks to the first
237 * *note-on* event after 'start'.
239 * _model->begin(converter.from( ) ,..) eventually calls
240 * Sequence<Time>::const_iterator() in libs/evoral/src/Sequence.cpp
241 * which looks up the note-event via seq.note_lower_bound(t);
242 * but the sequence 'seq' only contains note-on events(!).
243 * note-off events are implicit in Sequence<Time>::operator++()
244 * via _active_notes.pop(); and not part of seq.
246 * see also http://tracker.ardour.org/view.php?id=6287#c16671
248 * The linear search below assures that reading starts at the first
249 * event for the given time, regardless of its event-type.
251 * The performance of this approach is O(N), while the previous
252 * implementation is O(log(N)). This needs to be optimized:
253 * The model-iterator or event-sequence needs to be re-designed in
254 * some way (maybe keep an iterator per playlist).
256 for (i = _model->begin(); i != _model->end(); ++i) {
257 if (i->time().to_double() >= start_beats) {
261 _model_iter_valid = true;
263 _model->active_notes().clear();
268 _last_read_end = start + cnt;
270 // Copy events in [start, start + cnt) into dst
271 for (; i != _model->end(); ++i) {
273 // Offset by source start to convert event time to session time
275 framepos_t time_frames = _session.tempo_map().frame_at_quarter_note (i->time().to_double() + start_qn);
277 if (time_frames < start + source_start) {
278 /* event too early */
282 } else if (time_frames >= start + cnt + source_start) {
284 DEBUG_TRACE (DEBUG::MidiSourceIO,
285 string_compose ("%1: reached end with event @ %2 vs. %3\n",
286 _name, time_frames, start+cnt));
293 if (filter && filter->filter(i->buffer(), i->size())) {
294 DEBUG_TRACE (DEBUG::MidiSourceIO,
295 string_compose ("%1: filter event @ %2 type %3 size %4\n",
296 _name, time_frames, i->event_type(), i->size()));
301 time_frames = loop_range->squish (time_frames);
304 dst.write (time_frames, i->event_type(), i->size(), i->buffer());
307 if (DEBUG_ENABLED(DEBUG::MidiSourceIO)) {
309 DEBUG_STR_APPEND(a, string_compose ("%1 added event @ %2 sz %3 within %4 .. %5 ",
310 _name, time_frames, i->size(),
311 start + source_start, start + cnt + source_start));
312 for (size_t n=0; n < i->size(); ++n) {
313 DEBUG_STR_APPEND(a,hex);
314 DEBUG_STR_APPEND(a,"0x");
315 DEBUG_STR_APPEND(a,(int)i->buffer()[n]);
316 DEBUG_STR_APPEND(a,' ');
318 DEBUG_STR_APPEND(a,'\n');
319 DEBUG_TRACE (DEBUG::MidiSourceIO, DEBUG_STR(a).str());
333 MidiSource::midi_write (const Lock& lm,
334 MidiRingBuffer<framepos_t>& source,
335 framepos_t source_start,
338 const framecnt_t ret = write_unlocked (lm, source, source_start, cnt);
340 if (cnt == max_framecnt) {
344 _capture_length += cnt;
351 MidiSource::mark_streaming_midi_write_started (const Lock& lock, NoteMode mode)
354 _model->set_note_mode (mode);
355 _model->start_write ();
362 MidiSource::mark_write_starting_now (framecnt_t position,
363 framecnt_t capture_length,
364 framecnt_t loop_length)
366 /* I'm not sure if this is the best way to approach this, but
367 _capture_length needs to be set up with the transport frame
368 when a record actually starts, as it is used by
369 SMFSource::write_unlocked to decide whether incoming notes
370 are within the correct time range.
371 mark_streaming_midi_write_started (perhaps a more logical
372 place to do this) is not called at exactly the time when
373 record starts, and I don't think it necessarily can be
374 because it is not RT-safe.
377 set_timeline_position(position);
378 _capture_length = capture_length;
379 _capture_loop_length = loop_length;
381 TempoMap& map (_session.tempo_map());
382 BeatsFramesConverter converter(map, position);
383 _length_beats = converter.from(capture_length);
387 MidiSource::mark_streaming_write_started (const Lock& lock)
389 NoteMode note_mode = _model ? _model->note_mode() : Sustained;
390 mark_streaming_midi_write_started (lock, note_mode);
394 MidiSource::mark_midi_streaming_write_completed (const Lock& lock,
395 Evoral::Sequence<Evoral::Beats>::StuckNoteOption option,
399 _model->end_write (option, end);
401 /* Make captured controls discrete to play back user input exactly. */
402 for (MidiModel::Controls::iterator i = _model->controls().begin(); i != _model->controls().end(); ++i) {
403 if (i->second->list()) {
404 i->second->list()->set_interpolation(Evoral::ControlList::Discrete);
405 _interpolation_style.insert(std::make_pair(i->second->parameter(), Evoral::ControlList::Discrete));
415 MidiSource::mark_streaming_write_completed (const Lock& lock)
417 mark_midi_streaming_write_completed (lock, Evoral::Sequence<Evoral::Beats>::DeleteStuckNotes);
421 MidiSource::export_write_to (const Lock& lock, boost::shared_ptr<MidiSource> newsrc, Evoral::Beats begin, Evoral::Beats end)
423 Lock newsrc_lock (newsrc->mutex ());
426 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during export"));
430 _model->write_section_to (newsrc, newsrc_lock, begin, end, true);
432 newsrc->flush_midi(newsrc_lock);
438 MidiSource::write_to (const Lock& lock, boost::shared_ptr<MidiSource> newsrc, Evoral::Beats begin, Evoral::Beats end)
440 Lock newsrc_lock (newsrc->mutex ());
442 newsrc->set_timeline_position (_timeline_position);
443 newsrc->copy_interpolation_from (this);
444 newsrc->copy_automation_state_from (this);
447 if (begin == Evoral::MinBeats && end == Evoral::MaxBeats) {
448 _model->write_to (newsrc, newsrc_lock);
450 _model->write_section_to (newsrc, newsrc_lock, begin, end);
453 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
457 newsrc->flush_midi(newsrc_lock);
459 /* force a reload of the model if the range is partial */
461 if (begin != Evoral::MinBeats || end != Evoral::MaxBeats) {
462 newsrc->load_model (newsrc_lock, true);
464 newsrc->set_model (newsrc_lock, _model);
467 /* this file is not removable (but since it is MIDI, it is mutable) */
469 boost::dynamic_pointer_cast<FileSource> (newsrc)->prevent_deletion ();
475 MidiSource::session_saved()
479 /* this writes a copy of the data to disk.
480 XXX do we need to do this every time?
483 if (_model && _model->edited()) {
484 /* The model is edited, write its contents into the current source
485 file (overwiting previous contents). */
487 /* Temporarily drop our reference to the model so that as the model
488 pushes its current state to us, we don't try to update it. */
489 boost::shared_ptr<MidiModel> mm = _model;
492 /* Flush model contents to disk. */
493 mm->sync_to_source (lm);
495 /* Reacquire model. */
504 MidiSource::set_note_mode(const Lock& lock, NoteMode mode)
507 _model->set_note_mode(mode);
512 MidiSource::drop_model (const Lock& lock)
516 ModelChanged (); /* EMIT SIGNAL */
520 MidiSource::set_model (const Lock& lock, boost::shared_ptr<MidiModel> m)
524 ModelChanged (); /* EMIT SIGNAL */
527 Evoral::ControlList::InterpolationStyle
528 MidiSource::interpolation_of (Evoral::Parameter p) const
530 InterpolationStyleMap::const_iterator i = _interpolation_style.find (p);
531 if (i == _interpolation_style.end()) {
532 return EventTypeMap::instance().interpolation_of (p);
539 MidiSource::automation_state_of (Evoral::Parameter p) const
541 AutomationStateMap::const_iterator i = _automation_state.find (p);
542 if (i == _automation_state.end()) {
543 /* default to `play', otherwise if MIDI is recorded /
544 imported with controllers etc. they are by default
545 not played back, which is a little surprising.
553 /** Set interpolation style to be used for a given parameter. This change will be
554 * propagated to anyone who needs to know.
557 MidiSource::set_interpolation_of (Evoral::Parameter p, Evoral::ControlList::InterpolationStyle s)
559 if (interpolation_of (p) == s) {
563 if (EventTypeMap::instance().interpolation_of (p) == s) {
564 /* interpolation type is being set to the default, so we don't need a note in our map */
565 _interpolation_style.erase (p);
567 _interpolation_style[p] = s;
570 InterpolationChanged (p, s); /* EMIT SIGNAL */
574 MidiSource::set_automation_state_of (Evoral::Parameter p, AutoState s)
576 if (automation_state_of (p) == s) {
581 /* automation state is being set to the default, so we don't need a note in our map */
582 _automation_state.erase (p);
584 _automation_state[p] = s;
587 AutomationStateChanged (p, s); /* EMIT SIGNAL */
591 MidiSource::copy_interpolation_from (boost::shared_ptr<MidiSource> s)
593 copy_interpolation_from (s.get ());
597 MidiSource::copy_automation_state_from (boost::shared_ptr<MidiSource> s)
599 copy_automation_state_from (s.get ());
603 MidiSource::copy_interpolation_from (MidiSource* s)
605 _interpolation_style = s->_interpolation_style;
607 /* XXX: should probably emit signals here */
611 MidiSource::copy_automation_state_from (MidiSource* s)
613 _automation_state = s->_automation_state;
615 /* XXX: should probably emit signals here */