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();
146 MidiSource::midi_read (Evoral::EventSink<nframes_t>& dst, sframes_t source_start,
147 sframes_t start, nframes_t cnt,
148 sframes_t stamp_offset, sframes_t negative_stamp_offset,
149 MidiStateTracker* tracker) const
151 Glib::Mutex::Lock lm (_lock);
153 BeatsFramesConverter converter(_session.tempo_map(), source_start);
156 Evoral::Sequence<double>::const_iterator& i = _model_iter;
158 // If the cached iterator is invalid, search for the first event past start
159 if (_last_read_end == 0 || start != _last_read_end || !_model_iter_valid) {
160 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 search for relevant iterator for %1 / %2\n", _name, source_start, start));
161 for (i = _model->begin(); i != _model->end(); ++i) {
162 if (converter.to(i->time()) >= start) {
166 _model_iter_valid = true;
168 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 use cached iterator for %1 / %2\n", _name, source_start, start));
171 _last_read_end = start + cnt;
173 // Read events up to end
174 for (; i != _model->end(); ++i) {
175 const sframes_t time_frames = converter.to(i->time());
176 if (time_frames < start + cnt) {
177 dst.write(time_frames + stamp_offset - negative_stamp_offset,
178 i->event_type(), i->size(), i->buffer());
180 Evoral::MIDIEvent<Evoral::MusicalTime>& ev (*(Evoral::MIDIEvent<Evoral::MusicalTime>*) (&(*i)));
181 if (ev.is_note_on()) {
182 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note on %2 @ %3\n", _name, ev.note(), time_frames));
183 tracker->add (ev.note(), ev.channel());
184 } else if (ev.is_note_off()) {
185 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note off %2 @ %3\n", _name, ev.note(), time_frames));
186 tracker->remove (ev.note(), ev.channel());
195 return read_unlocked (dst, source_start, start, cnt, stamp_offset, negative_stamp_offset, tracker);
200 MidiSource::midi_write (MidiRingBuffer<nframes_t>& source, sframes_t source_start, nframes_t duration)
202 Glib::Mutex::Lock lm (_lock);
203 const nframes_t ret = write_unlocked (source, source_start, duration);
204 _last_write_end += duration;
209 MidiSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
211 set_timeline_position(start_frame);
214 _model->set_note_mode(mode);
215 _model->start_write();
218 _last_write_end = start_frame;
223 MidiSource::mark_streaming_write_started ()
225 NoteMode note_mode = _model ? _model->note_mode() : Sustained;
226 mark_streaming_midi_write_started(note_mode, _session.transport_frame());
230 MidiSource::mark_streaming_write_completed ()
233 _model->end_write(false);
239 boost::shared_ptr<MidiSource>
240 MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
242 string newname = PBD::basename_nosuffix(_name.val());
245 /* get a new name for the MIDI file we're going to write to
250 newname = bump_name_once (newname, '-');
251 /* XXX build path safely */
252 newpath = _session.session_directory().midi_path().to_string() +"/"+ newname + ".mid";
254 } while (Glib::file_test (newpath, Glib::FILE_TEST_EXISTS));
256 boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
257 SourceFactory::createWritable(DataType::MIDI, _session,
258 newpath, false, _session.frame_rate()));
260 newsrc->set_timeline_position(_timeline_position);
263 if (begin == Evoral::MinMusicalTime && end == Evoral::MaxMusicalTime) {
264 _model->write_to (newsrc);
266 _model->write_section_to (newsrc, begin, end);
269 error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
270 return boost::shared_ptr<MidiSource>();
273 newsrc->flush_midi();
275 /* force a reload of the model if the range is partial */
277 if (begin != Evoral::MinMusicalTime || end != Evoral::MaxMusicalTime) {
278 newsrc->load_model (true, true);
280 newsrc->set_model (_model);
287 MidiSource::session_saved()
291 if (_model && _model->edited()) {
292 boost::shared_ptr<MidiSource> newsrc = clone ();
295 _model->set_midi_source (newsrc.get());
296 Switched (newsrc); /* EMIT SIGNAL */
302 MidiSource::set_note_mode(NoteMode mode)
305 _model->set_note_mode(mode);
310 MidiSource::drop_model ()
312 cerr << name() << " drop model\n";