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 PBD::Signal1<void,MidiSource*> MidiSource::MidiSourceCreated;
61 MidiSource::MidiSource (Session& s, string name, Source::Flag flags)
62 : Source(s, DataType::MIDI, name, flags)
64 , _model_iter_valid(false)
69 , _capture_loop_length(0)
73 MidiSource::MidiSource (Session& s, const XMLNode& node)
76 , _model_iter_valid(false)
81 , _capture_loop_length(0)
83 if (set_state (node, Stateful::loading_state_version)) {
84 throw failed_constructor();
88 MidiSource::~MidiSource ()
93 MidiSource::get_state ()
95 XMLNode& node (Source::get_state());
97 if (_captured_for.length()) {
98 node.add_property ("captured-for", _captured_for);
101 for (InterpolationStyleMap::const_iterator i = _interpolation_style.begin(); i != _interpolation_style.end(); ++i) {
102 XMLNode* child = node.add_child (X_("InterpolationStyle"));
103 child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
104 child->add_property (X_("style"), enum_2_string (i->second));
107 for (AutomationStateMap::const_iterator i = _automation_state.begin(); i != _automation_state.end(); ++i) {
108 XMLNode* child = node.add_child (X_("AutomationState"));
109 child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
110 child->add_property (X_("state"), enum_2_string (i->second));
117 MidiSource::set_state (const XMLNode& node, int /*version*/)
119 XMLProperty const * prop;
120 if ((prop = node.property ("captured-for")) != 0) {
121 _captured_for = prop->value();
124 XMLNodeList children = node.children ();
125 for (XMLNodeConstIterator i = children.begin(); i != children.end(); ++i) {
126 if ((*i)->name() == X_("InterpolationStyle")) {
127 if ((prop = (*i)->property (X_("parameter"))) == 0) {
128 error << _("Missing parameter property on InterpolationStyle") << endmsg;
131 Evoral::Parameter p = EventTypeMap::instance().from_symbol (prop->value());
133 if ((prop = (*i)->property (X_("style"))) == 0) {
134 error << _("Missing style property on InterpolationStyle") << endmsg;
137 Evoral::ControlList::InterpolationStyle s = static_cast<Evoral::ControlList::InterpolationStyle>(
138 string_2_enum (prop->value(), s));
139 set_interpolation_of (p, s);
141 } else if ((*i)->name() == X_("AutomationState")) {
142 if ((prop = (*i)->property (X_("parameter"))) == 0) {
143 error << _("Missing parameter property on AutomationState") << endmsg;
146 Evoral::Parameter p = EventTypeMap::instance().from_symbol (prop->value());
148 if ((prop = (*i)->property (X_("state"))) == 0) {
149 error << _("Missing state property on AutomationState") << endmsg;
152 AutoState s = static_cast<AutoState> (string_2_enum (prop->value(), s));
153 set_automation_state_of (p, s);
161 MidiSource::empty () const
163 return !_length_beats;
167 MidiSource::length (framepos_t pos) const
169 if (!_length_beats) {
173 BeatsFramesConverter converter(_session.tempo_map(), pos);
174 return converter.to(_length_beats);
178 MidiSource::update_length (framecnt_t)
180 // You're not the boss of me!
184 MidiSource::invalidate (const Lock& lock, std::set<Evoral::Sequence<Evoral::Beats>::WeakNotePtr>* notes)
186 _model_iter_valid = false;
187 _model_iter.invalidate(notes);
191 MidiSource::midi_read (const Lock& lm,
192 Evoral::EventSink<framepos_t>& dst,
193 framepos_t source_start,
196 Evoral::Range<framepos_t>* loop_range,
197 MidiStateTracker* tracker,
198 MidiChannelFilter* filter,
199 const std::set<Evoral::Parameter>& filtered,
201 const double start_pulse) const
203 //BeatsFramesConverter converter(_session.tempo_map(), source_start);
204 const int32_t tpb = Timecode::BBT_Time::ticks_per_beat;
205 const double pulse_tick_res = floor ((pulse * 4.0 * tpb) + 0.5) / tpb;
206 const double start_qn = (pulse - start_pulse) * 4.0;
208 DEBUG_TRACE (DEBUG::MidiSourceIO,
209 string_compose ("MidiSource::midi_read() %5 sstart %1 start %2 cnt %3 tracker %4\n",
210 source_start, start, cnt, tracker, name()));
213 return read_unlocked (lm, dst, source_start, start, cnt, loop_range, tracker, filter);
216 // Find appropriate model iterator
217 Evoral::Sequence<Evoral::Beats>::const_iterator& i = _model_iter;
218 const bool linear_read = _last_read_end != 0 && start == _last_read_end;
219 if (!linear_read || !_model_iter_valid) {
221 // Cached iterator is invalid, search for the first event past start
222 i = _model->begin(converter.from(start), false, filtered,
223 linear_read ? &_model->active_notes() : NULL);
224 _model_iter_valid = true;
226 _model->active_notes().clear();
229 /* hot-fix http://tracker.ardour.org/view.php?id=6541
230 * "parallel playback of linked midi regions -> no note-offs"
232 * A midi source can be used by multiple tracks simultaneously,
233 * in which case midi_read() may be called from different tracks for
234 * overlapping time-ranges.
236 * However there is only a single iterator for a given midi-source.
237 * This results in every midi_read() performing a seek.
239 * If seeking is performed with
240 * _model->begin(converter.from(start),...)
241 * the model is used for seeking. That method seeks to the first
242 * *note-on* event after 'start'.
244 * _model->begin(converter.from( ) ,..) eventually calls
245 * Sequence<Time>::const_iterator() in libs/evoral/src/Sequence.cpp
246 * which looks up the note-event via seq.note_lower_bound(t);
247 * but the sequence 'seq' only contains note-on events(!).
248 * note-off events are implicit in Sequence<Time>::operator++()
249 * via _active_notes.pop(); and not part of seq.
251 * see also http://tracker.ardour.org/view.php?id=6287#c16671
253 * The linear search below assures that reading starts at the first
254 * event for the given time, regardless of its event-type.
256 * The performance of this approach is O(N), while the previous
257 * implementation is O(log(N)). This needs to be optimized:
258 * The model-iterator or event-sequence needs to be re-designed in
259 * some way (maybe keep an iterator per playlist).
261 for (i = _model->begin(); i != _model->end(); ++i) {
262 if (floor (((i->time().to_double() + start_qn) * tpb) + 0.5) / tpb >= pulse_tick_res) {
266 _model_iter_valid = true;
268 _model->active_notes().clear();
273 _last_read_end = start + cnt;
275 // Copy events in [start, start + cnt) into dst
276 for (; i != _model->end(); ++i) {
278 // Offset by source start to convert event time to session time
280 framecnt_t time_frames = _session.tempo_map().frame_at_quarter_note (i->time().to_double() + start_qn);
282 if (time_frames < (start + source_start)) {
284 /* event too early */
288 } else if (time_frames >= start + cnt + source_start) {
290 DEBUG_TRACE (DEBUG::MidiSourceIO,
291 string_compose ("%1: reached end with event @ %2 vs. %3\n",
292 _name, time_frames, start+cnt));
299 if (filter && filter->filter(i->buffer(), i->size())) {
300 DEBUG_TRACE (DEBUG::MidiSourceIO,
301 string_compose ("%1: filter event @ %2 type %3 size %4\n",
302 _name, time_frames, i->event_type(), i->size()));
307 time_frames = loop_range->squish (time_frames);
310 dst.write (time_frames, i->event_type(), i->size(), i->buffer());
313 if (DEBUG_ENABLED(DEBUG::MidiSourceIO)) {
315 DEBUG_STR_APPEND(a, string_compose ("%1 added event @ %2 sz %3 within %4 .. %5\n",
316 _name, time_frames, i->size(),
317 start + source_start, start + cnt + source_start));
318 for (size_t n=0; n < i->size(); ++n) {
319 DEBUG_STR_APPEND(a,hex);
320 DEBUG_STR_APPEND(a,"0x");
321 DEBUG_STR_APPEND(a,(int)i->buffer()[n]);
322 DEBUG_STR_APPEND(a,' ');
324 DEBUG_STR_APPEND(a,'\n');
325 DEBUG_TRACE (DEBUG::MidiSourceIO, DEBUG_STR(a).str());
339 MidiSource::midi_write (const Lock& lm,
340 MidiRingBuffer<framepos_t>& source,
341 framepos_t source_start,
344 const framecnt_t ret = write_unlocked (lm, source, source_start, cnt);
346 if (cnt == max_framecnt) {
350 _capture_length += cnt;
357 MidiSource::mark_streaming_midi_write_started (const Lock& lock, NoteMode mode)
360 _model->set_note_mode (mode);
361 _model->start_write ();
368 MidiSource::mark_write_starting_now (framecnt_t position,
369 framecnt_t capture_length,
370 framecnt_t loop_length)
372 /* I'm not sure if this is the best way to approach this, but
373 _capture_length needs to be set up with the transport frame
374 when a record actually starts, as it is used by
375 SMFSource::write_unlocked to decide whether incoming notes
376 are within the correct time range.
377 mark_streaming_midi_write_started (perhaps a more logical
378 place to do this) is not called at exactly the time when
379 record starts, and I don't think it necessarily can be
380 because it is not RT-safe.
383 set_timeline_position(position);
384 _capture_length = capture_length;
385 _capture_loop_length = loop_length;
387 TempoMap& map (_session.tempo_map());
388 BeatsFramesConverter converter(map, position);
389 _length_beats = converter.from(capture_length);
390 _length_pulse = map.pulse_at_frame (position + capture_length) - map.pulse_at_frame (position);
394 MidiSource::mark_streaming_write_started (const Lock& lock)
396 NoteMode note_mode = _model ? _model->note_mode() : Sustained;
397 mark_streaming_midi_write_started (lock, note_mode);
401 MidiSource::mark_midi_streaming_write_completed (const Lock& lock,
402 Evoral::Sequence<Evoral::Beats>::StuckNoteOption option,
406 _model->end_write (option, end);
408 /* Make captured controls discrete to play back user input exactly. */
409 for (MidiModel::Controls::iterator i = _model->controls().begin(); i != _model->controls().end(); ++i) {
410 if (i->second->list()) {
411 i->second->list()->set_interpolation(Evoral::ControlList::Discrete);
412 _interpolation_style.insert(std::make_pair(i->second->parameter(), Evoral::ControlList::Discrete));
422 MidiSource::mark_streaming_write_completed (const Lock& lock)
424 mark_midi_streaming_write_completed (lock, Evoral::Sequence<Evoral::Beats>::DeleteStuckNotes);
428 MidiSource::export_write_to (const Lock& lock, boost::shared_ptr<MidiSource> newsrc, Evoral::Beats begin, Evoral::Beats end)
430 Lock newsrc_lock (newsrc->mutex ());
433 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during export"));
437 _model->write_section_to (newsrc, newsrc_lock, begin, end, true);
439 newsrc->flush_midi(newsrc_lock);
445 MidiSource::write_to (const Lock& lock, boost::shared_ptr<MidiSource> newsrc, Evoral::Beats begin, Evoral::Beats end)
447 Lock newsrc_lock (newsrc->mutex ());
449 newsrc->set_timeline_position (_timeline_position);
450 newsrc->copy_interpolation_from (this);
451 newsrc->copy_automation_state_from (this);
454 if (begin == Evoral::MinBeats && end == Evoral::MaxBeats) {
455 _model->write_to (newsrc, newsrc_lock);
457 _model->write_section_to (newsrc, newsrc_lock, begin, end);
460 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
464 newsrc->flush_midi(newsrc_lock);
466 /* force a reload of the model if the range is partial */
468 if (begin != Evoral::MinBeats || end != Evoral::MaxBeats) {
469 newsrc->load_model (newsrc_lock, true);
471 newsrc->set_model (newsrc_lock, _model);
474 /* this file is not removable (but since it is MIDI, it is mutable) */
476 boost::dynamic_pointer_cast<FileSource> (newsrc)->prevent_deletion ();
482 MidiSource::session_saved()
486 /* this writes a copy of the data to disk.
487 XXX do we need to do this every time?
490 if (_model && _model->edited()) {
491 /* The model is edited, write its contents into the current source
492 file (overwiting previous contents). */
494 /* Temporarily drop our reference to the model so that as the model
495 pushes its current state to us, we don't try to update it. */
496 boost::shared_ptr<MidiModel> mm = _model;
499 /* Flush model contents to disk. */
500 mm->sync_to_source (lm);
502 /* Reacquire model. */
511 MidiSource::set_note_mode(const Lock& lock, NoteMode mode)
514 _model->set_note_mode(mode);
519 MidiSource::drop_model (const Lock& lock)
523 ModelChanged (); /* EMIT SIGNAL */
527 MidiSource::set_model (const Lock& lock, boost::shared_ptr<MidiModel> m)
531 ModelChanged (); /* EMIT SIGNAL */
534 Evoral::ControlList::InterpolationStyle
535 MidiSource::interpolation_of (Evoral::Parameter p) const
537 InterpolationStyleMap::const_iterator i = _interpolation_style.find (p);
538 if (i == _interpolation_style.end()) {
539 return EventTypeMap::instance().interpolation_of (p);
546 MidiSource::automation_state_of (Evoral::Parameter p) const
548 AutomationStateMap::const_iterator i = _automation_state.find (p);
549 if (i == _automation_state.end()) {
550 /* default to `play', otherwise if MIDI is recorded /
551 imported with controllers etc. they are by default
552 not played back, which is a little surprising.
560 /** Set interpolation style to be used for a given parameter. This change will be
561 * propagated to anyone who needs to know.
564 MidiSource::set_interpolation_of (Evoral::Parameter p, Evoral::ControlList::InterpolationStyle s)
566 if (interpolation_of (p) == s) {
570 if (EventTypeMap::instance().interpolation_of (p) == s) {
571 /* interpolation type is being set to the default, so we don't need a note in our map */
572 _interpolation_style.erase (p);
574 _interpolation_style[p] = s;
577 InterpolationChanged (p, s); /* EMIT SIGNAL */
581 MidiSource::set_automation_state_of (Evoral::Parameter p, AutoState s)
583 if (automation_state_of (p) == s) {
588 /* automation state is being set to the default, so we don't need a note in our map */
589 _automation_state.erase (p);
591 _automation_state[p] = s;
594 AutomationStateChanged (p, s); /* EMIT SIGNAL */
598 MidiSource::copy_interpolation_from (boost::shared_ptr<MidiSource> s)
600 copy_interpolation_from (s.get ());
604 MidiSource::copy_automation_state_from (boost::shared_ptr<MidiSource> s)
606 copy_automation_state_from (s.get ());
610 MidiSource::copy_interpolation_from (MidiSource* s)
612 _interpolation_style = s->_interpolation_style;
614 /* XXX: should probably emit signals here */
618 MidiSource::copy_automation_state_from (MidiSource* s)
620 _automation_state = s->_automation_state;
622 /* XXX: should probably emit signals here */