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);
104 MidiSource::set_state (const XMLNode& node, int /*version*/)
106 const XMLProperty* prop;
108 if ((prop = node.property ("captured-for")) != 0) {
109 _captured_for = prop->value();
116 MidiSource::empty () const
118 return _length_beats == 0;
122 MidiSource::length (framepos_t pos) const
124 if (_length_beats == 0) {
128 BeatsFramesConverter converter(_session.tempo_map(), pos);
129 return converter.to(_length_beats);
133 MidiSource::update_length (sframes_t /*pos*/, sframes_t /*cnt*/)
135 // You're not the boss of me!
139 MidiSource::invalidate ()
141 _model_iter_valid = false;
142 _model_iter.invalidate();
145 /** @param filtered A set of parameters whose MIDI messages will not be returned */
147 MidiSource::midi_read (Evoral::EventSink<nframes_t>& dst, sframes_t source_start,
148 sframes_t start, nframes_t cnt,
149 sframes_t stamp_offset, sframes_t negative_stamp_offset,
150 MidiStateTracker* tracker,
151 std::set<Evoral::Parameter> const & filtered) const
153 Glib::Mutex::Lock lm (_lock);
155 BeatsFramesConverter converter(_session.tempo_map(), source_start);
158 Evoral::Sequence<double>::const_iterator& i = _model_iter;
160 // If the cached iterator is invalid, search for the first event past start
161 if (_last_read_end == 0 || start != _last_read_end || !_model_iter_valid) {
162 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 search for relevant iterator for %1 / %2\n", _name, source_start, start));
163 for (i = _model->begin(0, filtered); i != _model->end(); ++i) {
164 if (converter.to(i->time()) >= start) {
168 _model_iter_valid = true;
170 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 use cached iterator for %1 / %2\n", _name, source_start, start));
173 _last_read_end = start + cnt;
175 // Read events up to end
176 for (; i != _model->end(); ++i) {
177 const sframes_t time_frames = converter.to(i->time());
178 if (time_frames < start + cnt) {
179 dst.write(time_frames + stamp_offset - negative_stamp_offset,
180 i->event_type(), i->size(), i->buffer());
182 Evoral::MIDIEvent<Evoral::MusicalTime>& ev (*(Evoral::MIDIEvent<Evoral::MusicalTime>*) (&(*i)));
183 if (ev.is_note_on()) {
184 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note on %2 @ %3\n", _name, ev.note(), time_frames));
185 tracker->add (ev.note(), ev.channel());
186 } else if (ev.is_note_off()) {
187 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note off %2 @ %3\n", _name, ev.note(), time_frames));
188 tracker->remove (ev.note(), ev.channel());
197 return read_unlocked (dst, source_start, start, cnt, stamp_offset, negative_stamp_offset, tracker);
202 MidiSource::midi_write (MidiRingBuffer<nframes_t>& source, sframes_t source_start, nframes_t duration)
204 Glib::Mutex::Lock lm (_lock);
205 const nframes_t ret = write_unlocked (source, source_start, duration);
206 _last_write_end += duration;
211 MidiSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
213 set_timeline_position(start_frame);
216 _model->set_note_mode(mode);
217 _model->start_write();
220 _last_write_end = start_frame;
225 MidiSource::mark_streaming_write_started ()
227 NoteMode note_mode = _model ? _model->note_mode() : Sustained;
228 mark_streaming_midi_write_started(note_mode, _session.transport_frame());
232 MidiSource::mark_streaming_write_completed ()
235 _model->end_write(false);
241 boost::shared_ptr<MidiSource>
242 MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
244 string newname = PBD::basename_nosuffix(_name.val());
247 /* get a new name for the MIDI file we're going to write to
252 newname = bump_name_once (newname, '-');
253 /* XXX build path safely */
254 newpath = _session.session_directory().midi_path().to_string() +"/"+ newname + ".mid";
256 } while (Glib::file_test (newpath, Glib::FILE_TEST_EXISTS));
258 boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
259 SourceFactory::createWritable(DataType::MIDI, _session,
260 newpath, false, _session.frame_rate()));
262 newsrc->set_timeline_position(_timeline_position);
265 if (begin == Evoral::MinMusicalTime && end == Evoral::MaxMusicalTime) {
266 _model->write_to (newsrc);
268 _model->write_section_to (newsrc, begin, end);
271 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
272 return boost::shared_ptr<MidiSource>();
275 newsrc->flush_midi();
277 /* force a reload of the model if the range is partial */
279 if (begin != Evoral::MinMusicalTime || end != Evoral::MaxMusicalTime) {
280 newsrc->load_model (true, true);
282 newsrc->set_model (_model);
289 MidiSource::session_saved()
291 /* this writes a copy of the data to disk.
292 XXX do we need to do this every time?
296 cerr << name() << " @ " << this << " length at save = " << _length_beats << endl;
298 #if 0 // old style: clone the source if necessary on every session save
299 // and switch to the new source
301 if (_model && _model->edited()) {
302 cerr << "Model exists and is edited\n";
304 boost::shared_ptr<MidiSource> newsrc = clone ();
307 _model->set_midi_source (newsrc.get());
308 Switched (newsrc); /* EMIT SIGNAL */
315 MidiSource::set_note_mode(NoteMode mode)
318 _model->set_note_mode(mode);
323 MidiSource::drop_model ()
325 cerr << name() << " drop model\n";
327 ModelChanged (); /* EMIT SIGNAL */
331 MidiSource::set_model (boost::shared_ptr<MidiModel> m)
334 ModelChanged (); /* EMIT SIGNAL */