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());
211 Evoral::MIDIEvent<Evoral::MusicalTime>& ev (*(Evoral::MIDIEvent<Evoral::MusicalTime>*) (&(*i)));
212 if (ev.is_note_on()) {
213 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note on %2 @ %3 velocity %4\n", _name, ev.note(), time_frames, (int) ev.velocity()));
214 tracker->add (ev.note(), ev.channel());
215 } else if (ev.is_note_off()) {
216 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note off %2 @ %3\n", _name, ev.note(), time_frames));
217 tracker->remove (ev.note(), ev.channel());
226 return read_unlocked (dst, source_start, start, cnt, stamp_offset, negative_stamp_offset, tracker);
231 MidiSource::midi_write (MidiRingBuffer<nframes_t>& source, sframes_t source_start, nframes_t duration)
233 Glib::Mutex::Lock lm (_lock);
234 const nframes_t ret = write_unlocked (source, source_start, duration);
235 _last_write_end += duration;
240 MidiSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
242 set_timeline_position(start_frame);
245 _model->set_note_mode(mode);
246 _model->start_write();
249 _last_write_end = start_frame;
254 MidiSource::mark_streaming_write_started ()
256 NoteMode note_mode = _model ? _model->note_mode() : Sustained;
257 mark_streaming_midi_write_started(note_mode, _session.transport_frame());
261 MidiSource::mark_streaming_write_completed ()
264 _model->end_write(false);
270 boost::shared_ptr<MidiSource>
271 MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
273 string newname = PBD::basename_nosuffix(_name.val());
276 /* get a new name for the MIDI file we're going to write to
281 newname = bump_name_once (newname, '-');
282 /* XXX build path safely */
283 newpath = _session.session_directory().midi_path().to_string() +"/"+ newname + ".mid";
285 } while (Glib::file_test (newpath, Glib::FILE_TEST_EXISTS));
287 boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
288 SourceFactory::createWritable(DataType::MIDI, _session,
289 newpath, false, _session.frame_rate()));
291 newsrc->set_timeline_position(_timeline_position);
292 newsrc->copy_interpolation_from (this);
295 if (begin == Evoral::MinMusicalTime && end == Evoral::MaxMusicalTime) {
296 _model->write_to (newsrc);
298 _model->write_section_to (newsrc, begin, end);
301 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
302 return boost::shared_ptr<MidiSource>();
305 newsrc->flush_midi();
307 /* force a reload of the model if the range is partial */
309 if (begin != Evoral::MinMusicalTime || end != Evoral::MaxMusicalTime) {
310 newsrc->load_model (true, true);
312 newsrc->set_model (_model);
319 MidiSource::session_saved()
321 /* this writes a copy of the data to disk.
322 XXX do we need to do this every time?
325 if (_model && _model->edited()) {
329 // if the model is edited, write its contents into
330 // the current source file (overwiting previous contents.
332 /* temporarily drop our reference to the model so that
333 as the model pushes its current state to us, we don't
337 boost::shared_ptr<MidiModel> mm = _model ;
340 /* flush model contents to disk
343 mm->sync_to_source ();
345 /* reacquire model */
355 MidiSource::set_note_mode(NoteMode mode)
358 _model->set_note_mode(mode);
363 MidiSource::drop_model ()
366 ModelChanged (); /* EMIT SIGNAL */
370 MidiSource::set_model (boost::shared_ptr<MidiModel> m)
373 ModelChanged (); /* EMIT SIGNAL */
376 /** @return Interpolation style that should be used for control parameter \a p */
377 Evoral::ControlList::InterpolationStyle
378 MidiSource::interpolation_of (Evoral::Parameter p) const
380 InterpolationStyleMap::const_iterator i = _interpolation_style.find (p);
381 if (i == _interpolation_style.end()) {
382 return EventTypeMap::instance().interpolation_of (p);
388 /** Set interpolation style to be used for a given parameter. This change will be
389 * propagated to anyone who needs to know.
392 MidiSource::set_interpolation_of (Evoral::Parameter p, Evoral::ControlList::InterpolationStyle s)
394 if (interpolation_of (p) == s) {
398 if (EventTypeMap::instance().interpolation_of (p) == s) {
399 /* interpolation type is being set to the default, so we don't need a note in our map */
400 _interpolation_style.erase (p);
402 _interpolation_style[p] = s;
405 InterpolationChanged (p, s); /* EMIT SIGNAL */
409 MidiSource::copy_interpolation_from (boost::shared_ptr<MidiSource> s)
411 copy_interpolation_from (s.get ());
415 MidiSource::copy_interpolation_from (MidiSource* s)
417 _interpolation_style = s->_interpolation_style;
419 /* XXX: should probably emit signals here */