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"
44 #include "ardour/debug.h"
48 using namespace ARDOUR;
52 /** Constructor used for new internal-to-session files. File cannot exist. */
53 SMFSource::SMFSource (Session& s, const string& path, Source::Flag flags)
54 : Source(s, DataType::MIDI, path, flags)
55 , MidiSource(s, path, flags)
56 , FileSource(s, DataType::MIDI, path, string(), flags)
58 , _last_ev_time_beats(0.0)
59 , _last_ev_time_frames(0)
60 , _smf_last_read_end (0)
61 , _smf_last_read_time (0)
63 /* note that origin remains empty */
65 if (init(_path, false)) {
66 throw failed_constructor ();
69 /* file is not opened until write */
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 ();
97 SMFSource::~SMFSource ()
100 unlink (_path.c_str());
105 SMFSource::open_for_write ()
107 if (create (_path)) {
114 /** All stamps in audio frames */
116 SMFSource::read_unlocked (Evoral::EventSink<framepos_t>& destination, framepos_t const source_start,
117 framepos_t start, framecnt_t duration,
118 MidiStateTracker* tracker) const
121 uint64_t time = 0; // in SMF ticks, 1 tick per _ppqn
123 if (writable() && !_open) {
124 /* nothing to read since nothing has ben written */
128 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF read_unlocked: start %1 duration %2\n", start, duration));
130 _read_data_count = 0;
132 // Output parameters for read_event (which will allocate scratch in buffer as needed)
133 uint32_t ev_delta_t = 0;
134 uint32_t ev_type = 0;
135 uint32_t ev_size = 0;
136 uint8_t* ev_buffer = 0;
138 size_t scratch_size = 0; // keep track of scratch to minimize reallocs
140 BeatsFramesConverter converter(_session.tempo_map(), source_start);
142 const uint64_t start_ticks = (uint64_t)(converter.from(start) * ppqn());
143 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF read_unlocked: start in ticks %1\n", start_ticks));
145 if (_smf_last_read_end == 0 || start != _smf_last_read_end) {
146 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF read_unlocked: seek to %1\n", start));
147 Evoral::SMF::seek_to_start();
148 while (time < start_ticks) {
151 ret = read_event(&ev_delta_t, &ev_size, &ev_buffer, &ignored);
152 if (ret == -1) { // EOF
153 _smf_last_read_end = start + duration;
156 time += ev_delta_t; // accumulate delta time
159 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF read_unlocked: set time to %1\n", _smf_last_read_time));
160 time = _smf_last_read_time;
163 _smf_last_read_end = start + duration;
166 gint ignored; /* XXX don't ignore note id's ??*/
168 ret = read_event(&ev_delta_t, &ev_size, &ev_buffer, &ignored);
169 if (ret == -1) { // EOF
173 time += ev_delta_t; // accumulate delta time
174 _smf_last_read_time = time;
176 if (ret == 0) { // meta-event (skipped, just accumulate time)
180 ev_type = EventTypeMap::instance().midi_event_type(ev_buffer[0]);
182 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF read_unlocked delta %1, time %2, buf[0] %3, type %4\n",
183 ev_delta_t, time, ev_buffer[0], ev_type));
185 assert(time >= start_ticks);
187 /* Note that we add on the source start time (in session frames) here so that ev_frame_time
188 is in session frames.
190 const framepos_t ev_frame_time = converter.to(time / (double)ppqn()) + source_start;
192 if (ev_frame_time < start + duration) {
193 destination.write (ev_frame_time, ev_type, ev_size, ev_buffer);
196 if (ev_buffer[0] & MIDI_CMD_NOTE_ON) {
197 tracker->add (ev_buffer[1], ev_buffer[0] & 0xf);
198 } else if (ev_buffer[0] & MIDI_CMD_NOTE_OFF) {
199 tracker->remove (ev_buffer[1], ev_buffer[0] & 0xf);
206 _read_data_count += ev_size;
208 if (ev_size > scratch_size) {
209 scratch_size = ev_size;
211 ev_size = scratch_size; // ensure read_event only allocates if necessary
217 /** Write data to this source from a MidiRingBuffer.
218 * @param source Buffer to read from.
219 * @param position This source's start position in session frames.
222 SMFSource::write_unlocked (MidiRingBuffer<framepos_t>& source, framepos_t position, framecnt_t duration)
225 mark_streaming_write_started ();
228 _write_data_count = 0;
231 Evoral::EventType type;
234 size_t buf_capacity = 4;
235 uint8_t* buf = (uint8_t*)malloc(buf_capacity);
237 if (_model && ! _model->writing()) {
238 _model->start_write();
241 Evoral::MIDIEvent<framepos_t> ev;
244 bool ret = source.peek ((uint8_t*)&time, sizeof (time));
245 if (!ret || time > _last_write_end + duration) {
249 ret = source.read_prefix(&time, &type, &size);
251 cerr << "ERROR: Unable to read event prefix, corrupt MIDI ring buffer" << endl;
255 if (size > buf_capacity) {
257 buf = (uint8_t*)realloc(buf, size);
260 ret = source.read_contents(size, buf);
262 cerr << "ERROR: Read time/size but not buffer, corrupt MIDI ring buffer" << endl;
266 /* convert from session time to time relative to the source start */
267 assert(time >= position);
270 ev.set(buf, size, time);
271 ev.set_event_type(EventTypeMap::instance().midi_event_type(ev.buffer()[0]));
272 ev.set_id (Evoral::next_event_id());
274 if (!(ev.is_channel_event() || ev.is_smf_meta_event() || ev.is_sysex())) {
275 /*cerr << "SMFSource: WARNING: caller tried to write non SMF-Event of type "
276 << std::hex << int(ev.buffer()[0]) << endl;*/
280 append_event_unlocked_frames(ev, position);
283 Evoral::SMF::flush();
290 /** Append an event with a timestamp in beats (double) */
292 SMFSource::append_event_unlocked_beats (const Evoral::Event<double>& ev)
295 if (ev.size() == 0) {
299 /* printf("SMFSource: %s - append_event_unlocked_beats ID = %d time = %lf, size = %u, data = ",
300 name().c_str(), ev.id(), ev.time(), ev.size());
301 for (size_t i = 0; i < ev.size(); ++i) printf("%X ", ev.buffer()[i]); printf("\n");*/
303 assert(ev.time() >= 0);
304 if (ev.time() < _last_ev_time_beats) {
305 cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
309 Evoral::event_id_t event_id;
312 event_id = Evoral::next_event_id();
318 _model->append (ev, event_id);
321 _length_beats = max(_length_beats, ev.time());
323 const double delta_time_beats = ev.time() - _last_ev_time_beats;
324 const uint32_t delta_time_ticks = (uint32_t)lrint(delta_time_beats * (double)ppqn());
326 Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer(), event_id);
327 _last_ev_time_beats = ev.time();
329 _write_data_count += ev.size();
333 /** Append an event with a timestamp in frames (framepos_t) */
335 SMFSource::append_event_unlocked_frames (const Evoral::Event<framepos_t>& ev, framepos_t position)
338 if (ev.size() == 0) {
342 /* printf("SMFSource: %s - append_event_unlocked_frames ID = %d time = %u, size = %u, data = ",
343 name().c_str(), ev.id(), ev.time(), ev.size());
344 for (size_t i=0; i < ev.size(); ++i) printf("%X ", ev.buffer()[i]); printf("\n");*/
346 if (ev.time() < _last_ev_time_frames) {
347 cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
351 BeatsFramesConverter converter(_session.tempo_map(), position);
352 const double ev_time_beats = converter.from(ev.time());
353 Evoral::event_id_t event_id;
356 event_id = Evoral::next_event_id();
362 const Evoral::Event<double> beat_ev (ev.event_type(),
365 (uint8_t*)ev.buffer());
366 _model->append (beat_ev, event_id);
369 _length_beats = max(_length_beats, ev_time_beats);
371 const framepos_t delta_time_frames = ev.time() - _last_ev_time_frames;
372 const double delta_time_beats = converter.from(delta_time_frames);
373 const uint32_t delta_time_ticks = (uint32_t)(lrint(delta_time_beats * (double)ppqn()));
375 Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer(), event_id);
376 _last_ev_time_frames = ev.time();
378 _write_data_count += ev.size();
383 SMFSource::get_state ()
385 XMLNode& node = MidiSource::get_state();
386 node.add_property (X_("origin"), _origin);
391 SMFSource::set_state (const XMLNode& node, int version)
393 if (Source::set_state (node, version)) {
397 if (MidiSource::set_state (node, version)) {
401 if (FileSource::set_state (node, version)) {
409 SMFSource::mark_streaming_midi_write_started (NoteMode mode)
411 /* CALLER MUST HOLD LOCK */
413 if (!_open && open_for_write()) {
414 error << string_compose (_("cannot open MIDI file %1 for write"), _path) << endmsg;
415 /* XXX should probably throw or return something */
419 MidiSource::mark_streaming_midi_write_started (mode);
420 Evoral::SMF::begin_write ();
421 _last_ev_time_beats = 0.0;
422 _last_ev_time_frames = 0;
426 SMFSource::mark_streaming_write_completed ()
428 Glib::Mutex::Lock lm (_lock);
429 MidiSource::mark_streaming_write_completed();
436 _model->set_edited(false);
439 Evoral::SMF::end_write ();
441 /* data in the file now, not removable */
443 mark_nonremovable ();
447 SMFSource::safe_midi_file_extension (const string& file)
449 return (file.rfind(".mid") != string::npos);
453 SMFSource::load_model (bool lock, bool force_reload)
459 boost::shared_ptr<Glib::Mutex::Lock> lm;
461 lm = boost::shared_ptr<Glib::Mutex::Lock>(new Glib::Mutex::Lock(_lock));
463 if (_model && !force_reload) {
468 _model = boost::shared_ptr<MidiModel> (new MidiModel (shared_from_this ()));
473 if (writable() && !_open) {
477 _model->start_write();
478 Evoral::SMF::seek_to_start();
480 uint64_t time = 0; /* in SMF ticks */
481 Evoral::Event<double> ev;
483 size_t scratch_size = 0; // keep track of scratch and minimize reallocs
485 uint32_t delta_t = 0;
490 bool have_event_id = false;
492 while ((ret = read_event (&delta_t, &size, &buf, &event_id)) >= 0) {
498 /* meta-event : did we get an event ID ?
502 have_event_id = true;
510 /* not a meta-event */
512 ev.set (buf, size, time / (double)ppqn());
513 ev.set_event_type(EventTypeMap::instance().midi_event_type(buf[0]));
515 if (!have_event_id) {
516 event_id = Evoral::next_event_id();
521 for (uint32_t xx = 0; xx < size; ++xx) {
523 snprintf (b, sizeof (b), "0x%x ", buf[xx]);
527 DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF %6 load model delta %1, time %2, size %3 buf %4, type %5\n",
528 delta_t, time, size, ss , ev.event_type(), name()));
531 _model->append (ev, event_id);
533 if (ev.size() > scratch_size) {
534 scratch_size = ev.size();
537 ev.size() = scratch_size; // ensure read_event only allocates if necessary
539 _length_beats = max(_length_beats, ev.time());
542 /* event ID's must immediately precede the event they are for
545 have_event_id = false;
548 _model->end_write(false);
549 _model->set_edited(false);
551 _model_iter = _model->begin();
557 SMFSource::destroy_model ()
559 //cerr << _name << " destroying model " << _model.get() << endl;
564 SMFSource::flush_midi ()
566 if (!writable() || (writable() && !_open)) {
570 Evoral::SMF::end_write();
571 /* data in the file means its no longer removable */
572 mark_nonremovable ();
576 SMFSource::set_path (const string& p)
578 FileSource::set_path (p);
579 SMF::set_path (_path);