2 Copyright (C) 2006 Paul Davis
3 Written by Dave Robillard, 2006
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.
31 #include <glibmm/fileutils.h>
33 #include "pbd/xml++.h"
34 #include "pbd/pthread_utils.h"
35 #include "pbd/basename.h"
37 #include "ardour/audioengine.h"
38 #include "ardour/debug.h"
39 #include "ardour/midi_model.h"
40 #include "ardour/midi_ring_buffer.h"
41 #include "ardour/midi_state_tracker.h"
42 #include "ardour/midi_source.h"
43 #include "ardour/session.h"
44 #include "ardour/session_directory.h"
45 #include "ardour/source_factory.h"
46 #include "ardour/tempo.h"
51 using namespace ARDOUR;
54 PBD::Signal1<void,MidiSource*> MidiSource::MidiSourceCreated;
56 MidiSource::MidiSource (Session& s, string name, Source::Flag flags)
57 : Source(s, DataType::MIDI, name, flags)
59 , _write_data_count(0)
61 , _model_iter_valid(false)
68 MidiSource::MidiSource (Session& s, const XMLNode& node)
71 , _write_data_count(0)
73 , _model_iter_valid(false)
79 _write_data_count = 0;
81 if (set_state (node, Stateful::loading_state_version)) {
82 throw failed_constructor();
87 MidiSource::~MidiSource ()
92 MidiSource::get_state ()
94 XMLNode& node (Source::get_state());
96 if (_captured_for.length()) {
97 node.add_property ("captured-for", _captured_for);
100 for (InterpolationStyleMap::const_iterator i = _interpolation_style.begin(); i != _interpolation_style.end(); ++i) {
101 XMLNode* child = node.add_child (X_("InterpolationStyle"));
102 child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
103 child->add_property (X_("style"), enum_2_string (i->second));
110 MidiSource::set_state (const XMLNode& node, int /*version*/)
112 const XMLProperty* prop;
114 if ((prop = node.property ("captured-for")) != 0) {
115 _captured_for = prop->value();
118 XMLNodeList children = node.children ();
119 for (XMLNodeConstIterator i = children.begin(); i != children.end(); ++i) {
120 if ((*i)->name() == X_("InterpolationStyle")) {
123 if ((prop = (*i)->property (X_("parameter"))) == 0) {
124 error << _("Missing parameter property on InterpolationStyle") << endmsg;
128 Evoral::Parameter p = EventTypeMap::instance().new_parameter (prop->value());
130 if ((prop = (*i)->property (X_("style"))) == 0) {
131 error << _("Missing style property on InterpolationStyle") << endmsg;
135 Evoral::ControlList::InterpolationStyle s = static_cast<Evoral::ControlList::InterpolationStyle> (string_2_enum (prop->value(), s));
136 set_interpolation_of (p, s);
144 MidiSource::empty () const
146 return _length_beats == 0;
150 MidiSource::length (framepos_t pos) const
152 if (_length_beats == 0) {
156 BeatsFramesConverter converter(_session.tempo_map(), pos);
157 return converter.to(_length_beats);
161 MidiSource::update_length (sframes_t /*pos*/, sframes_t /*cnt*/)
163 // You're not the boss of me!
167 MidiSource::invalidate ()
169 _model_iter_valid = false;
170 _model_iter.invalidate();
173 /** @param filtered A set of parameters whose MIDI messages will not be returned */
175 MidiSource::midi_read (Evoral::EventSink<nframes_t>& dst, sframes_t source_start,
176 sframes_t start, nframes_t cnt,
177 sframes_t stamp_offset, sframes_t negative_stamp_offset,
178 MidiStateTracker* tracker,
179 std::set<Evoral::Parameter> const & filtered) const
181 Glib::Mutex::Lock lm (_lock);
183 BeatsFramesConverter converter(_session.tempo_map(), source_start);
186 Evoral::Sequence<double>::const_iterator& i = _model_iter;
188 // If the cached iterator is invalid, search for the first event past start
189 if (_last_read_end == 0 || start != _last_read_end || !_model_iter_valid) {
190 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 search for relevant iterator for %1 / %2\n", _name, source_start, start));
191 for (i = _model->begin(0, false, filtered); i != _model->end(); ++i) {
192 if (converter.to(i->time()) >= start) {
196 _model_iter_valid = true;
198 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 use cached iterator for %1 / %2\n", _name, source_start, start));
201 _last_read_end = start + cnt;
203 // Read events up to end
204 for (; i != _model->end(); ++i) {
205 const sframes_t time_frames = converter.to(i->time());
206 if (time_frames < start + cnt) {
207 dst.write(time_frames + stamp_offset - negative_stamp_offset,
208 i->event_type(), i->size(), i->buffer());
210 Evoral::MIDIEvent<Evoral::MusicalTime>& ev (*(Evoral::MIDIEvent<Evoral::MusicalTime>*) (&(*i)));
211 if (ev.is_note_on()) {
212 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note on %2 @ %3\n", _name, ev.note(), time_frames));
213 tracker->add (ev.note(), ev.channel());
214 } else if (ev.is_note_off()) {
215 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note off %2 @ %3\n", _name, ev.note(), time_frames));
216 tracker->remove (ev.note(), ev.channel());
225 return read_unlocked (dst, source_start, start, cnt, stamp_offset, negative_stamp_offset, tracker);
230 MidiSource::midi_write (MidiRingBuffer<nframes_t>& source, sframes_t source_start, nframes_t duration)
232 Glib::Mutex::Lock lm (_lock);
233 const nframes_t ret = write_unlocked (source, source_start, duration);
234 _last_write_end += duration;
239 MidiSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
241 set_timeline_position(start_frame);
244 _model->set_note_mode(mode);
245 _model->start_write();
248 _last_write_end = start_frame;
253 MidiSource::mark_streaming_write_started ()
255 NoteMode note_mode = _model ? _model->note_mode() : Sustained;
256 mark_streaming_midi_write_started(note_mode, _session.transport_frame());
260 MidiSource::mark_streaming_write_completed ()
263 _model->end_write(false);
269 boost::shared_ptr<MidiSource>
270 MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
272 string newname = PBD::basename_nosuffix(_name.val());
275 /* get a new name for the MIDI file we're going to write to
280 newname = bump_name_once (newname, '-');
281 /* XXX build path safely */
282 newpath = _session.session_directory().midi_path().to_string() +"/"+ newname + ".mid";
284 } while (Glib::file_test (newpath, Glib::FILE_TEST_EXISTS));
286 boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
287 SourceFactory::createWritable(DataType::MIDI, _session,
288 newpath, false, _session.frame_rate()));
290 newsrc->set_timeline_position(_timeline_position);
291 newsrc->copy_interpolation_from (this);
294 if (begin == Evoral::MinMusicalTime && end == Evoral::MaxMusicalTime) {
295 _model->write_to (newsrc);
297 _model->write_section_to (newsrc, begin, end);
300 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
301 return boost::shared_ptr<MidiSource>();
304 newsrc->flush_midi();
306 /* force a reload of the model if the range is partial */
308 if (begin != Evoral::MinMusicalTime || end != Evoral::MaxMusicalTime) {
309 newsrc->load_model (true, true);
311 newsrc->set_model (_model);
318 MidiSource::session_saved()
320 /* this writes a copy of the data to disk.
321 XXX do we need to do this every time?
324 if (_model && _model->edited()) {
328 // if the model is edited, write its contents into
329 // the current source file (overwiting previous contents.
331 /* temporarily drop our reference to the model so that
332 as the model pushes its current state to us, we don't
336 boost::shared_ptr<MidiModel> mm = _model ;
339 /* flush model contents to disk
342 mm->sync_to_source ();
344 /* reacquire model */
354 MidiSource::set_note_mode(NoteMode mode)
357 _model->set_note_mode(mode);
362 MidiSource::drop_model ()
365 ModelChanged (); /* EMIT SIGNAL */
369 MidiSource::set_model (boost::shared_ptr<MidiModel> m)
372 ModelChanged (); /* EMIT SIGNAL */
375 /** @return Interpolation style that should be used for control parameter \a p */
376 Evoral::ControlList::InterpolationStyle
377 MidiSource::interpolation_of (Evoral::Parameter p) const
379 InterpolationStyleMap::const_iterator i = _interpolation_style.find (p);
380 if (i == _interpolation_style.end()) {
381 return EventTypeMap::instance().interpolation_of (p);
387 /** Set interpolation style to be used for a given parameter. This change will be
388 * propagated to anyone who needs to know.
391 MidiSource::set_interpolation_of (Evoral::Parameter p, Evoral::ControlList::InterpolationStyle s)
393 if (interpolation_of (p) == s) {
397 if (EventTypeMap::instance().interpolation_of (p) == s) {
398 /* interpolation type is being set to the default, so we don't need a note in our map */
399 _interpolation_style.erase (p);
401 _interpolation_style[p] = s;
404 InterpolationChanged (p, s); /* EMIT SIGNAL */
408 MidiSource::copy_interpolation_from (boost::shared_ptr<MidiSource> s)
410 copy_interpolation_from (s.get ());
414 MidiSource::copy_interpolation_from (MidiSource* s)
416 _interpolation_style = s->_interpolation_style;
418 /* XXX: should probably emit signals here */