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.
28 #include "pbd/mountpoint.h"
29 #include "pbd/pathscanner.h"
30 #include "pbd/stl_delete.h"
31 #include "pbd/strsplit.h"
33 #include <glibmm/miscutils.h>
35 #include "evoral/Control.hpp"
37 #include "ardour/audioengine.h"
38 #include "ardour/event_type_map.h"
39 #include "ardour/midi_model.h"
40 #include "ardour/midi_ring_buffer.h"
41 #include "ardour/midi_state_tracker.h"
42 #include "ardour/session.h"
43 #include "ardour/smf_source.h"
47 using namespace ARDOUR;
50 /** Constructor used for new internal-to-session files. File cannot exist. */
51 SMFSource::SMFSource (Session& s, const ustring& path, Source::Flag flags)
52 : Source(s, DataType::MIDI, path, flags)
54 , FileSource(s, DataType::MIDI, path, flags)
56 , _last_ev_time_beats(0.0)
57 , _last_ev_time_frames(0)
58 , _smf_last_read_end (0)
59 , _smf_last_read_time (0)
61 if (init(_path, false)) {
62 throw failed_constructor ();
66 throw failed_constructor ();
69 load_model(true, true); // FIXME
72 /** Constructor used for existing internal-to-session files. */
73 SMFSource::SMFSource (Session& s, const XMLNode& node, bool must_exist)
76 , FileSource(s, node, must_exist)
77 , _last_ev_time_beats(0.0)
78 , _last_ev_time_frames(0)
79 , _smf_last_read_end (0)
80 , _smf_last_read_time (0)
82 if (set_state(node, Stateful::loading_state_version)) {
83 throw failed_constructor ();
86 if (init(_path, true)) {
87 throw failed_constructor ();
91 throw failed_constructor ();
94 load_model(true, true); // FIXME
97 SMFSource::~SMFSource ()
100 unlink (_path.c_str());
104 /** All stamps in audio frames */
106 SMFSource::read_unlocked (Evoral::EventSink<nframes_t>& destination, sframes_t source_start,
107 sframes_t start, nframes_t duration,
108 sframes_t stamp_offset, sframes_t negative_stamp_offset,
109 MidiStateTracker* tracker) const
112 uint64_t time = 0; // in SMF ticks, 1 tick per _ppqn
114 _read_data_count = 0;
116 // Output parameters for read_event (which will allocate scratch in buffer as needed)
117 uint32_t ev_delta_t = 0;
118 uint32_t ev_type = 0;
119 uint32_t ev_size = 0;
120 uint8_t* ev_buffer = 0;
122 size_t scratch_size = 0; // keep track of scratch to minimize reallocs
124 BeatsFramesConverter converter(_session.tempo_map(), source_start);
126 const uint64_t start_ticks = (uint64_t)(converter.from(start) * ppqn());
128 if (_smf_last_read_end == 0 || start != _smf_last_read_end) {
129 //cerr << "SMFSource::read_unlocked seeking to " << start << endl;
130 Evoral::SMF::seek_to_start();
131 while (time < start_ticks) {
132 ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
133 if (ret == -1) { // EOF
134 _smf_last_read_end = start + duration;
137 time += ev_delta_t; // accumulate delta time
140 time = _smf_last_read_time;
143 _smf_last_read_end = start + duration;
146 ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
147 if (ret == -1) { // EOF
151 time += ev_delta_t; // accumulate delta time
152 _smf_last_read_time = time;
154 if (ret == 0) { // meta-event (skipped, just accumulate time)
158 ev_type = EventTypeMap::instance().midi_event_type(ev_buffer[0]);
161 cerr << "+++ SMF source read "
162 << " delta = " << ev_delta_t
163 << " time = " << time
164 << " buf[0] " << hex << (int) ev_buffer[0] << dec
165 << " type = " << ev_type;
168 assert(time >= start_ticks);
169 const sframes_t ev_frame_time = converter.to(time / (double)ppqn()) + stamp_offset;
172 cerr << " frames = " << ev_frame_time
173 << " w/offset = " << ev_frame_time - negative_stamp_offset
177 if (ev_frame_time < start + duration) {
178 destination.write(ev_frame_time - negative_stamp_offset, ev_type, ev_size, ev_buffer);
181 if (ev_buffer[0] & MIDI_CMD_NOTE_ON) {
182 tracker->add (ev_buffer[1], ev_buffer[0] & 0xf);
183 } else if (ev_buffer[0] & MIDI_CMD_NOTE_OFF) {
184 tracker->remove (ev_buffer[1], ev_buffer[0] & 0xf);
191 _read_data_count += ev_size;
193 if (ev_size > scratch_size) {
194 scratch_size = ev_size;
196 ev_size = scratch_size; // ensure read_event only allocates if necessary
202 /** All stamps in audio frames */
204 SMFSource::write_unlocked (MidiRingBuffer<nframes_t>& source, sframes_t position, nframes_t duration)
206 _write_data_count = 0;
209 Evoral::EventType type;
212 size_t buf_capacity = 4;
213 uint8_t* buf = (uint8_t*)malloc(buf_capacity);
215 if (_model && ! _model->writing()) {
216 _model->start_write();
219 Evoral::MIDIEvent<nframes_t> ev;
222 bool ret = source.peek_time(&time);
223 if (!ret || time > _last_write_end + duration) {
227 ret = source.read_prefix(&time, &type, &size);
229 cerr << "ERROR: Unable to read event prefix, corrupt MIDI ring buffer" << endl;
233 if (size > buf_capacity) {
235 buf = (uint8_t*)realloc(buf, size);
238 ret = source.read_contents(size, buf);
240 cerr << "ERROR: Read time/size but not buffer, corrupt MIDI ring buffer" << endl;
244 assert(time >= position);
247 ev.set(buf, size, time);
248 ev.set_event_type(EventTypeMap::instance().midi_event_type(ev.buffer()[0]));
249 if (!(ev.is_channel_event() || ev.is_smf_meta_event() || ev.is_sysex())) {
250 /*cerr << "SMFSource: WARNING: caller tried to write non SMF-Event of type "
251 << std::hex << int(ev.buffer()[0]) << endl;*/
255 append_event_unlocked_frames(ev, position);
259 set_default_controls_interpolation();
262 Evoral::SMF::flush();
265 ViewDataRangeReady(position + _last_write_end, duration); /* EMIT SIGNAL */
271 /** Append an event with a timestamp in beats (double) */
273 SMFSource::append_event_unlocked_beats (const Evoral::Event<double>& ev)
276 if (ev.size() == 0) {
280 /*printf("SMFSource: %s - append_event_unlocked_beats time = %lf, size = %u, data = ",
281 name().c_str(), ev.time(), ev.size());
282 for (size_t i = 0; i < ev.size(); ++i) printf("%X ", ev.buffer()[i]); printf("\n");*/
284 assert(ev.time() >= 0);
285 if (ev.time() < _last_ev_time_beats) {
286 cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
290 _length_beats = max(_length_beats, ev.time());
292 const double delta_time_beats = ev.time() - _last_ev_time_beats;
293 const uint32_t delta_time_ticks = (uint32_t)lrint(delta_time_beats * (double)ppqn());
295 Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer());
296 _last_ev_time_beats = ev.time();
298 _write_data_count += ev.size();
305 /** Append an event with a timestamp in frames (nframes_t) */
307 SMFSource::append_event_unlocked_frames (const Evoral::Event<nframes_t>& ev, sframes_t position)
310 if (ev.size() == 0) {
314 /*printf("SMFSource: %s - append_event_unlocked_frames time = %u, size = %u, data = ",
315 name().c_str(), ev.time(), ev.size());
316 for (size_t i=0; i < ev.size(); ++i) printf("%X ", ev.buffer()[i]); printf("\n");*/
318 if (ev.time() < _last_ev_time_frames) {
319 cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
323 BeatsFramesConverter converter(_session.tempo_map(), position);
325 _length_beats = max(_length_beats, converter.from(ev.time()));
327 const sframes_t delta_time_frames = ev.time() - _last_ev_time_frames;
328 const double delta_time_beats = converter.from(delta_time_frames);
329 const uint32_t delta_time_ticks = (uint32_t)(lrint(delta_time_beats * (double)ppqn()));
331 Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer());
332 _last_ev_time_frames = ev.time();
334 _write_data_count += ev.size();
337 const double ev_time_beats = converter.from(ev.time());
338 const Evoral::Event<double> beat_ev(
339 ev.event_type(), ev_time_beats, ev.size(), (uint8_t*)ev.buffer());
340 _model->append(beat_ev);
345 SMFSource::get_state ()
347 return MidiSource::get_state();
351 SMFSource::set_state (const XMLNode& node, int version)
353 if (Source::set_state (node, version)) {
357 if (MidiSource::set_state (node, version)) {
361 if (FileSource::set_state (node, version)) {
369 SMFSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
371 Glib::Mutex::Lock lm (_lock);
372 MidiSource::mark_streaming_midi_write_started (mode, start_frame);
373 Evoral::SMF::begin_write ();
374 _last_ev_time_beats = 0.0;
375 _last_ev_time_frames = 0;
379 SMFSource::mark_streaming_write_completed ()
381 Glib::Mutex::Lock lm (_lock);
382 MidiSource::mark_streaming_write_completed();
388 _model->set_edited(false);
389 Evoral::SMF::end_write ();
393 SMFSource::safe_midi_file_extension (const Glib::ustring& file)
395 return (file.rfind(".mid") != Glib::ustring::npos);
399 SMFSource::load_model (bool lock, bool force_reload)
405 boost::shared_ptr<Glib::Mutex::Lock> lm;
407 lm = boost::shared_ptr<Glib::Mutex::Lock>(new Glib::Mutex::Lock(_lock));
409 if (_model && !force_reload) {
414 _model = boost::shared_ptr<MidiModel>(new MidiModel(this));
415 //cerr << _name << " loaded new model " << _model.get() << endl;
417 /*cerr << _name << " reloading model " << _model.get()
418 << " (" << _model->n_notes() << " notes)" << endl;*/
422 _model->start_write();
423 Evoral::SMF::seek_to_start();
425 uint64_t time = 0; /* in SMF ticks */
426 Evoral::Event<double> ev;
428 size_t scratch_size = 0; // keep track of scratch and minimize reallocs
430 uint32_t delta_t = 0;
434 while ((ret = read_event(&delta_t, &size, &buf)) >= 0) {
436 ev.set(buf, size, time / (double)ppqn());
438 if (ret > 0) { // didn't skip (meta) event
439 ev.set_event_type(EventTypeMap::instance().midi_event_type(buf[0]));
443 if (ev.size() > scratch_size) {
444 scratch_size = ev.size();
446 ev.size() = scratch_size; // ensure read_event only allocates if necessary
448 _length_beats = max(_length_beats, ev.time());
451 set_default_controls_interpolation();
453 _model->end_write(false);
454 _model->set_edited(false);
456 _model_iter = _model->begin();
462 SMFSource::set_default_controls_interpolation ()
464 // set interpolation style to defaults, can be changed by the GUI later
465 Evoral::ControlSet::Controls controls = _model->controls();
466 for (Evoral::ControlSet::Controls::iterator c = controls.begin(); c != controls.end(); ++c) {
467 (*c).second->list()->set_interpolation(
468 EventTypeMap::instance().interpolation_of((*c).first));
474 SMFSource::destroy_model ()
476 //cerr << _name << " destroying model " << _model.get() << endl;
481 SMFSource::flush_midi ()
483 Evoral::SMF::end_write();