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/SMFReader.hpp"
36 #include "evoral/Control.hpp"
38 #include "ardour/audioengine.h"
39 #include "ardour/event_type_map.h"
40 #include "ardour/midi_model.h"
41 #include "ardour/midi_ring_buffer.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, bool embedded, Source::Flag flags)
52 : Source(s, DataType::MIDI, path, flags)
54 , FileSource(s, DataType::MIDI, path, embedded, flags)
56 , _last_ev_time_beats(0.0)
57 , _last_ev_time_frames(0)
58 , _smf_last_read_end (0)
60 if (init(_name, false)) {
61 throw failed_constructor ();
65 throw failed_constructor ();
69 /** Constructor used for existing internal-to-session files. */
70 SMFSource::SMFSource (Session& s, const XMLNode& node, bool must_exist)
73 , FileSource(s, node, must_exist)
74 , _last_ev_time_beats(0.0)
75 , _last_ev_time_frames(0)
76 , _smf_last_read_end (0)
78 if (set_state(node)) {
79 throw failed_constructor ();
82 if (init(_name, true)) {
83 throw failed_constructor ();
87 throw failed_constructor ();
91 SMFSource::~SMFSource ()
94 unlink (_path.c_str());
98 /** All stamps in audio frames */
100 SMFSource::read_unlocked (MidiRingBuffer<nframes_t>& destination, sframes_t source_start,
101 sframes_t start, nframes_t duration,
102 sframes_t stamp_offset, sframes_t negative_stamp_offset) const
105 uint64_t time = 0; // in SMF ticks, 1 tick per _ppqn
107 _read_data_count = 0;
109 // Output parameters for read_event (which will allocate scratch in buffer as needed)
110 uint32_t ev_delta_t = 0;
111 uint32_t ev_type = 0;
112 uint32_t ev_size = 0;
113 uint8_t* ev_buffer = 0;
115 size_t scratch_size = 0; // keep track of scratch to minimize reallocs
117 BeatsFramesConverter converter(_session, source_start);
119 const uint64_t start_ticks = (uint64_t)(converter.from(start) * ppqn());
121 if (_smf_last_read_end == 0 || start != _smf_last_read_end) {
122 //cerr << "SMFSource::read_unlocked seeking to " << start << endl;
123 Evoral::SMF::seek_to_start();
124 while (time < start_ticks) {
125 ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
126 if (ret == -1) { // EOF
127 _smf_last_read_end = start + duration;
130 time += ev_delta_t; // accumulate delta time
134 _smf_last_read_end = start + duration;
137 ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
138 if (ret == -1) { // EOF
142 time += ev_delta_t; // accumulate delta time
144 if (ret == 0) { // meta-event (skipped, just accumulate time)
148 ev_type = EventTypeMap::instance().midi_event_type(ev_buffer[0]);
150 assert(time >= start_ticks);
151 const sframes_t ev_frame_time = converter.to(time / (double)ppqn()) + stamp_offset;
153 if (ev_frame_time < start + duration) {
154 destination.write(ev_frame_time - negative_stamp_offset, ev_type, ev_size, ev_buffer);
159 _read_data_count += ev_size;
161 if (ev_size > scratch_size) {
162 scratch_size = ev_size;
164 ev_size = scratch_size; // ensure read_event only allocates if necessary
170 /** All stamps in audio frames */
172 SMFSource::write_unlocked (MidiRingBuffer<nframes_t>& source, sframes_t position, nframes_t duration)
174 _write_data_count = 0;
177 Evoral::EventType type;
180 size_t buf_capacity = 4;
181 uint8_t* buf = (uint8_t*)malloc(buf_capacity);
183 if (_model && ! _model->writing()) {
184 _model->start_write();
187 Evoral::MIDIEvent<nframes_t> ev;
190 bool ret = source.peek_time(&time);
191 if (!ret || time > _last_write_end + duration) {
195 ret = source.read_prefix(&time, &type, &size);
197 cerr << "ERROR: Unable to read event prefix, corrupt MIDI ring buffer" << endl;
201 if (size > buf_capacity) {
203 buf = (uint8_t*)realloc(buf, size);
206 ret = source.read_contents(size, buf);
208 cerr << "ERROR: Read time/size but not buffer, corrupt MIDI ring buffer" << endl;
212 assert(time >= position);
215 ev.set(buf, size, time);
216 ev.set_event_type(EventTypeMap::instance().midi_event_type(ev.buffer()[0]));
217 if (!(ev.is_channel_event() || ev.is_smf_meta_event() || ev.is_sysex())) {
218 cerr << "SMFSource: WARNING: caller tried to write non SMF-Event of type "
219 << std::hex << int(ev.buffer()[0]) << endl;
223 append_event_unlocked_frames(ev, position);
227 set_default_controls_interpolation();
230 Evoral::SMF::flush();
233 ViewDataRangeReady(position + _last_write_end, duration); /* EMIT SIGNAL */
239 /** Append an event with a timestamp in beats (double) */
241 SMFSource::append_event_unlocked_beats (const Evoral::Event<double>& ev)
243 if (ev.size() == 0) {
247 /*printf("SMFSource: %s - append_event_unlocked_beats time = %lf, size = %u, data = ",
248 name().c_str(), ev.time(), ev.size());
249 for (size_t i = 0; i < ev.size(); ++i) printf("%X ", ev.buffer()[i]); printf("\n");*/
251 assert(ev.time() >= 0);
252 if (ev.time() < _last_ev_time_beats) {
253 cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
257 _length_beats = max(_length_beats, ev.time());
259 const double delta_time_beats = ev.time() - _last_ev_time_beats;
260 const uint32_t delta_time_ticks = (uint32_t)lrint(delta_time_beats * (double)ppqn());
262 Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer());
263 _last_ev_time_beats = ev.time();
265 _write_data_count += ev.size();
272 /** Append an event with a timestamp in frames (nframes_t) */
274 SMFSource::append_event_unlocked_frames (const Evoral::Event<nframes_t>& ev, sframes_t position)
276 if (ev.size() == 0) {
280 /*printf("SMFSource: %s - append_event_unlocked_frames time = %u, 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 if (ev.time() < _last_ev_time_frames) {
285 cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
289 BeatsFramesConverter converter(_session, position);
291 _length_beats = max(_length_beats, converter.from(ev.time()));
293 const sframes_t delta_time_frames = ev.time() - _last_ev_time_frames;
294 const double delta_time_beats = converter.from(delta_time_frames);
295 const uint32_t delta_time_ticks = (uint32_t)(lrint(delta_time_beats * (double)ppqn()));
297 Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer());
298 _last_ev_time_frames = ev.time();
300 _write_data_count += ev.size();
303 const double ev_time_beats = converter.from(ev.time());
304 const Evoral::Event<double> beat_ev(
305 ev.event_type(), ev_time_beats, ev.size(), (uint8_t*)ev.buffer());
306 _model->append(beat_ev);
311 SMFSource::get_state ()
313 return MidiSource::get_state();
317 SMFSource::set_state (const XMLNode& node)
319 if (Source::set_state (node)) {
323 if (MidiSource::set_state (node)) {
327 if (FileSource::set_state (node)) {
335 SMFSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
337 MidiSource::mark_streaming_midi_write_started (mode, start_frame);
338 Evoral::SMF::begin_write ();
339 _last_ev_time_beats = 0.0;
340 _last_ev_time_frames = 0;
344 SMFSource::mark_streaming_write_completed ()
346 MidiSource::mark_streaming_write_completed();
352 _model->set_edited(false);
353 Evoral::SMF::end_write ();
357 SMFSource::safe_midi_file_extension (const Glib::ustring& file)
359 return (file.rfind(".mid") != Glib::ustring::npos);
363 SMFSource::load_model (bool lock, bool force_reload)
370 Glib::Mutex::Lock lm (_lock);
373 if (_model && !force_reload) {
378 _model = boost::shared_ptr<MidiModel>(new MidiModel(this));
379 //cerr << _name << " loaded new model " << _model.get() << endl;
381 /*cerr << _name << " reloading model " << _model.get()
382 << " (" << _model->n_notes() << " notes)" << endl;*/
386 _model->start_write();
387 Evoral::SMF::seek_to_start();
389 uint64_t time = 0; /* in SMF ticks */
390 Evoral::Event<double> ev;
392 size_t scratch_size = 0; // keep track of scratch and minimize reallocs
394 uint32_t delta_t = 0;
398 while ((ret = read_event(&delta_t, &size, &buf)) >= 0) {
400 ev.set(buf, size, time / (double)ppqn());
402 if (ret > 0) { // didn't skip (meta) event
403 ev.set_event_type(EventTypeMap::instance().midi_event_type(buf[0]));
407 if (ev.size() > scratch_size) {
408 scratch_size = ev.size();
410 ev.size() = scratch_size; // ensure read_event only allocates if necessary
412 _length_beats = max(_length_beats, ev.time());
415 set_default_controls_interpolation();
417 _model->end_write(false);
418 _model->set_edited(false);
420 _model_iter = _model->begin();
425 #define LINEAR_INTERPOLATION_MODE_WORKS_PROPERLY 0
428 SMFSource::set_default_controls_interpolation ()
430 // set interpolation style to defaults, can be changed by the GUI later
431 Evoral::ControlSet::Controls controls = _model->controls();
432 for (Evoral::ControlSet::Controls::iterator c = controls.begin(); c != controls.end(); ++c) {
433 (*c).second->list()->set_interpolation(
434 // to be enabled when ControlList::rt_safe_earliest_event_linear_unlocked works properly
435 #if LINEAR_INTERPOLATION_MODE_WORKS_PROPERLY
436 EventTypeMap::instance().interpolation_of((*c).first));
438 Evoral::ControlList::Discrete);
445 SMFSource::destroy_model ()
447 //cerr << _name << " destroying model " << _model.get() << endl;
452 SMFSource::flush_midi ()
454 Evoral::SMF::end_write();