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)
68 , _capture_loop_length(0)
72 MidiSource::MidiSource (Session& s, const XMLNode& node)
75 , _model_iter_valid(false)
79 , _capture_loop_length(0)
81 if (set_state (node, Stateful::loading_state_version)) {
82 throw failed_constructor();
86 MidiSource::~MidiSource ()
91 MidiSource::get_state ()
93 XMLNode& node (Source::get_state());
95 if (_captured_for.length()) {
96 node.add_property ("captured-for", _captured_for);
99 for (InterpolationStyleMap::const_iterator i = _interpolation_style.begin(); i != _interpolation_style.end(); ++i) {
100 XMLNode* child = node.add_child (X_("InterpolationStyle"));
101 child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
102 child->add_property (X_("style"), enum_2_string (i->second));
105 for (AutomationStateMap::const_iterator i = _automation_state.begin(); i != _automation_state.end(); ++i) {
106 XMLNode* child = node.add_child (X_("AutomationState"));
107 child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
108 child->add_property (X_("state"), enum_2_string (i->second));
115 MidiSource::set_state (const XMLNode& node, int /*version*/)
117 XMLProperty const * prop;
118 if ((prop = node.property ("captured-for")) != 0) {
119 _captured_for = prop->value();
122 XMLNodeList children = node.children ();
123 for (XMLNodeConstIterator i = children.begin(); i != children.end(); ++i) {
124 if ((*i)->name() == X_("InterpolationStyle")) {
125 if ((prop = (*i)->property (X_("parameter"))) == 0) {
126 error << _("Missing parameter property on InterpolationStyle") << endmsg;
129 Evoral::Parameter p = EventTypeMap::instance().from_symbol (prop->value());
131 if ((prop = (*i)->property (X_("style"))) == 0) {
132 error << _("Missing style property on InterpolationStyle") << endmsg;
135 Evoral::ControlList::InterpolationStyle s = static_cast<Evoral::ControlList::InterpolationStyle>(
136 string_2_enum (prop->value(), s));
137 set_interpolation_of (p, s);
139 } else if ((*i)->name() == X_("AutomationState")) {
140 if ((prop = (*i)->property (X_("parameter"))) == 0) {
141 error << _("Missing parameter property on AutomationState") << endmsg;
144 Evoral::Parameter p = EventTypeMap::instance().from_symbol (prop->value());
146 if ((prop = (*i)->property (X_("state"))) == 0) {
147 error << _("Missing state property on AutomationState") << endmsg;
150 AutoState s = static_cast<AutoState> (string_2_enum (prop->value(), s));
151 set_automation_state_of (p, s);
159 MidiSource::empty () const
161 return !_length_beats;
165 MidiSource::length (framepos_t pos) const
167 if (!_length_beats) {
171 BeatsFramesConverter converter(_session.tempo_map(), pos);
172 return converter.to(_length_beats);
176 MidiSource::update_length (framecnt_t)
178 // You're not the boss of me!
182 MidiSource::invalidate (const Lock& lock, std::set<Evoral::Sequence<Evoral::Beats>::WeakNotePtr>* notes)
184 _model_iter_valid = false;
185 _model_iter.invalidate(notes);
189 MidiSource::midi_read (const Lock& lm,
190 Evoral::EventSink<framepos_t>& dst,
191 framepos_t source_start,
194 MidiStateTracker* tracker,
195 MidiChannelFilter* filter,
196 const std::set<Evoral::Parameter>& filtered,
198 double start_beat) const
200 //BeatsFramesConverter converter(_session.tempo_map(), source_start);
202 DEBUG_TRACE (DEBUG::MidiSourceIO,
203 string_compose ("MidiSource::midi_read() %5 sstart %1 start %2 cnt %3 tracker %4\n",
204 source_start, start, cnt, tracker, name()));
207 // Find appropriate model iterator
208 Evoral::Sequence<Evoral::Beats>::const_iterator& i = _model_iter;
209 const bool linear_read = _last_read_end != 0 && start == _last_read_end;
210 if (!linear_read || !_model_iter_valid) {
212 // Cached iterator is invalid, search for the first event past start
213 i = _model->begin(converter.from(start), false, filtered,
214 linear_read ? &_model->active_notes() : NULL);
215 _model_iter_valid = true;
217 _model->active_notes().clear();
220 /* hot-fix http://tracker.ardour.org/view.php?id=6541
221 * "parallel playback of linked midi regions -> no note-offs"
223 * A midi source can be used by multiple tracks simultaneously,
224 * in which case midi_read() may be called from different tracks for
225 * overlapping time-ranges.
227 * However there is only a single iterator for a given midi-source.
228 * This results in every midi_read() performing a seek.
230 * If seeking is performed with
231 * _model->begin(converter.from(start),...)
232 * the model is used for seeking. That method seeks to the first
233 * *note-on* event after 'start'.
235 * _model->begin(converter.from( ) ,..) eventually calls
236 * Sequence<Time>::const_iterator() in libs/evoral/src/Sequence.cpp
237 * which looks up the note-event via seq.note_lower_bound(t);
238 * but the sequence 'seq' only contains note-on events(!).
239 * note-off events are implicit in Sequence<Time>::operator++()
240 * via _active_notes.pop(); and not part of seq.
242 * see also http://tracker.ardour.org/view.php?id=6287#c16671
244 * The linear search below assures that reading starts at the first
245 * event for the given time, regardless of its event-type.
247 * The performance of this approach is O(N), while the previous
248 * implementation is O(log(N)). This needs to be optimized:
249 * The model-iterator or event-sequence needs to be re-designed in
250 * some way (maybe keep an iterator per playlist).
252 for (i = _model->begin(); i != _model->end(); ++i) {
253 if (i->time().to_double() + (beat - start_beat) >= beat) {
257 _model_iter_valid = true;
259 _model->active_notes().clear();
264 _last_read_end = start + cnt;
266 // Copy events in [start, start + cnt) into dst
267 for (; i != _model->end(); ++i) {
268 const framecnt_t time_frames = _session.tempo_map().frame_at_beat (i->time().to_double() + (beat - start_beat));
270 if (time_frames < start + cnt + source_start) {
271 if (filter && filter->filter(i->buffer(), i->size())) {
272 DEBUG_TRACE (DEBUG::MidiSourceIO,
273 string_compose ("%1: filter event @ %2 type %3 size %4\n",
274 _name, time_frames, i->event_type(), i->size()));
277 // Offset by source start to convert event time to session time
278 dst.write (time_frames, i->event_type(), i->size(), i->buffer());
280 DEBUG_TRACE (DEBUG::MidiSourceIO,
281 string_compose ("%1: add event @ %2 type %3 size %4\n",
282 _name, time_frames, i->event_type(), i->size()));
288 DEBUG_TRACE (DEBUG::MidiSourceIO,
289 string_compose ("%1: reached end with event @ %2 vs. %3\n",
290 _name, time_frames, start+cnt));
296 return read_unlocked (lm, dst, source_start, start, cnt, tracker, filter);
301 MidiSource::midi_write (const Lock& lm,
302 MidiRingBuffer<framepos_t>& source,
303 framepos_t source_start,
306 const framecnt_t ret = write_unlocked (lm, source, source_start, cnt);
308 if (cnt == max_framecnt) {
312 _capture_length += cnt;
319 MidiSource::mark_streaming_midi_write_started (const Lock& lock, NoteMode mode)
322 _model->set_note_mode (mode);
323 _model->start_write ();
330 MidiSource::mark_write_starting_now (framecnt_t position,
331 framecnt_t capture_length,
332 framecnt_t loop_length)
334 /* I'm not sure if this is the best way to approach this, but
335 _capture_length needs to be set up with the transport frame
336 when a record actually starts, as it is used by
337 SMFSource::write_unlocked to decide whether incoming notes
338 are within the correct time range.
339 mark_streaming_midi_write_started (perhaps a more logical
340 place to do this) is not called at exactly the time when
341 record starts, and I don't think it necessarily can be
342 because it is not RT-safe.
345 set_timeline_position(position);
346 _capture_length = capture_length;
347 _capture_loop_length = loop_length;
349 BeatsFramesConverter converter(_session.tempo_map(), position);
350 _length_beats = converter.from(capture_length);
354 MidiSource::mark_streaming_write_started (const Lock& lock)
356 NoteMode note_mode = _model ? _model->note_mode() : Sustained;
357 mark_streaming_midi_write_started (lock, note_mode);
361 MidiSource::mark_midi_streaming_write_completed (const Lock& lock,
362 Evoral::Sequence<Evoral::Beats>::StuckNoteOption option,
366 _model->end_write (option, end);
368 /* Make captured controls discrete to play back user input exactly. */
369 for (MidiModel::Controls::iterator i = _model->controls().begin(); i != _model->controls().end(); ++i) {
370 if (i->second->list()) {
371 i->second->list()->set_interpolation(Evoral::ControlList::Discrete);
372 _interpolation_style.insert(std::make_pair(i->second->parameter(), Evoral::ControlList::Discrete));
382 MidiSource::mark_streaming_write_completed (const Lock& lock)
384 mark_midi_streaming_write_completed (lock, Evoral::Sequence<Evoral::Beats>::DeleteStuckNotes);
388 MidiSource::write_to (const Lock& lock, boost::shared_ptr<MidiSource> newsrc, Evoral::Beats begin, Evoral::Beats end)
390 Lock newsrc_lock (newsrc->mutex ());
392 newsrc->set_timeline_position (_timeline_position);
393 newsrc->copy_interpolation_from (this);
394 newsrc->copy_automation_state_from (this);
397 if (begin == Evoral::MinBeats && end == Evoral::MaxBeats) {
398 _model->write_to (newsrc, newsrc_lock);
400 _model->write_section_to (newsrc, newsrc_lock, begin, end);
403 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
407 newsrc->flush_midi(newsrc_lock);
409 /* force a reload of the model if the range is partial */
411 if (begin != Evoral::MinBeats || end != Evoral::MaxBeats) {
412 newsrc->load_model (newsrc_lock, true);
414 newsrc->set_model (newsrc_lock, _model);
417 /* this file is not removable (but since it is MIDI, it is mutable) */
419 boost::dynamic_pointer_cast<FileSource> (newsrc)->prevent_deletion ();
425 MidiSource::session_saved()
429 /* this writes a copy of the data to disk.
430 XXX do we need to do this every time?
433 if (_model && _model->edited()) {
434 /* The model is edited, write its contents into the current source
435 file (overwiting previous contents). */
437 /* Temporarily drop our reference to the model so that as the model
438 pushes its current state to us, we don't try to update it. */
439 boost::shared_ptr<MidiModel> mm = _model;
442 /* Flush model contents to disk. */
443 mm->sync_to_source (lm);
445 /* Reacquire model. */
454 MidiSource::set_note_mode(const Lock& lock, NoteMode mode)
457 _model->set_note_mode(mode);
462 MidiSource::drop_model (const Lock& lock)
466 ModelChanged (); /* EMIT SIGNAL */
470 MidiSource::set_model (const Lock& lock, boost::shared_ptr<MidiModel> m)
474 ModelChanged (); /* EMIT SIGNAL */
477 Evoral::ControlList::InterpolationStyle
478 MidiSource::interpolation_of (Evoral::Parameter p) const
480 InterpolationStyleMap::const_iterator i = _interpolation_style.find (p);
481 if (i == _interpolation_style.end()) {
482 return EventTypeMap::instance().interpolation_of (p);
489 MidiSource::automation_state_of (Evoral::Parameter p) const
491 AutomationStateMap::const_iterator i = _automation_state.find (p);
492 if (i == _automation_state.end()) {
493 /* default to `play', otherwise if MIDI is recorded /
494 imported with controllers etc. they are by default
495 not played back, which is a little surprising.
503 /** Set interpolation style to be used for a given parameter. This change will be
504 * propagated to anyone who needs to know.
507 MidiSource::set_interpolation_of (Evoral::Parameter p, Evoral::ControlList::InterpolationStyle s)
509 if (interpolation_of (p) == s) {
513 if (EventTypeMap::instance().interpolation_of (p) == s) {
514 /* interpolation type is being set to the default, so we don't need a note in our map */
515 _interpolation_style.erase (p);
517 _interpolation_style[p] = s;
520 InterpolationChanged (p, s); /* EMIT SIGNAL */
524 MidiSource::set_automation_state_of (Evoral::Parameter p, AutoState s)
526 if (automation_state_of (p) == s) {
531 /* automation state is being set to the default, so we don't need a note in our map */
532 _automation_state.erase (p);
534 _automation_state[p] = s;
537 AutomationStateChanged (p, s); /* EMIT SIGNAL */
541 MidiSource::copy_interpolation_from (boost::shared_ptr<MidiSource> s)
543 copy_interpolation_from (s.get ());
547 MidiSource::copy_automation_state_from (boost::shared_ptr<MidiSource> s)
549 copy_automation_state_from (s.get ());
553 MidiSource::copy_interpolation_from (MidiSource* s)
555 _interpolation_style = s->_interpolation_style;
557 /* XXX: should probably emit signals here */
561 MidiSource::copy_automation_state_from (MidiSource* s)
563 _automation_state = s->_automation_state;
565 /* XXX: should probably emit signals here */