2 Copyright (C) 2002 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include <glibmm/timer.h>
26 #include <pbd/pthread_utils.h>
27 #include <pbd/stacktrace.h>
29 #include <ardour/audioengine.h>
30 #include <ardour/buffer.h>
31 #include <ardour/port.h>
32 #include <ardour/session.h>
33 #include <ardour/cycle_timer.h>
34 #include <ardour/utils.h>
36 #include <ardour/timestamps.h>
41 using namespace ARDOUR;
44 gint AudioEngine::m_meter_exit;
47 ardour_jack_error (const char* msg)
49 // throw JACK errors away - they cause visual clutter
50 // error << "JACK: " << msg << endmsg;
53 AudioEngine::AudioEngine (string client_name)
57 session_remove_pending = false;
60 last_monitor_check = 0;
61 monitor_check_interval = max_frames;
62 _processed_frames = 0;
67 _freewheel_thread_registered = false;
68 _freewheeling = false;
71 g_atomic_int_set (&m_meter_exit, 0);
73 if (connect_to_jack (client_name)) {
74 throw NoBackendAvailable ();
78 AudioEngine::~AudioEngine ()
81 Glib::Mutex::Lock tm (_process_lock);
82 session_removed.signal ();
85 jack_client_close (_jack);
89 stop_metering_thread ();
94 _thread_init_callback (void *arg)
96 /* make sure that anybody who needs to know about this thread
100 PBD::notify_gui_about_thread_creation (pthread_self(), X_("Audioengine"), 4096);
104 AudioEngine::start ()
107 error << _("AudioEngine::start() called while disconnected from JACK") << endmsg;
114 nframes_t blocksize = jack_get_buffer_size (_jack);
116 BootMessage (_("Connect session to engine"));
118 session->set_block_size (blocksize);
119 session->set_frame_rate (jack_get_sample_rate (_jack));
121 /* page in as much of the session process code as we
122 can before we really start running.
125 session->process (blocksize);
126 session->process (blocksize);
127 session->process (blocksize);
128 session->process (blocksize);
129 session->process (blocksize);
130 session->process (blocksize);
131 session->process (blocksize);
132 session->process (blocksize);
135 _processed_frames = 0;
136 last_monitor_check = 0;
138 jack_on_shutdown (_jack, halted, this);
139 jack_set_graph_order_callback (_jack, _graph_order_callback, this);
140 jack_set_thread_init_callback (_jack, _thread_init_callback, this);
141 jack_set_process_callback (_jack, _process_callback, this);
142 jack_set_sample_rate_callback (_jack, _sample_rate_callback, this);
143 jack_set_buffer_size_callback (_jack, _bufsize_callback, this);
144 jack_set_xrun_callback (_jack, _xrun_callback, this);
145 jack_set_sync_callback (_jack, _jack_sync_callback, this);
146 jack_set_freewheel_callback (_jack, _freewheel_callback, this);
148 if (Config->get_jack_time_master()) {
149 jack_set_timebase_callback (_jack, 0, _jack_timebase_callback, this);
152 if (jack_activate (_jack) == 0) {
155 Running(); /* EMIT SIGNAL */
157 // error << _("cannot activate JACK client") << endmsg;
160 start_metering_thread();
163 return _running ? 0 : -1;
167 AudioEngine::stop (bool forever)
171 disconnect_from_jack ();
173 jack_deactivate (_jack);
174 Stopped(); /* EMIT SIGNAL */
178 return _running ? -1 : 0;
183 AudioEngine::get_sync_offset (nframes_t& offset) const
186 #ifdef HAVE_JACK_VIDEO_SUPPORT
191 (void) jack_transport_query (_jack, &pos);
193 if (pos.valid & JackVideoFrameOffset) {
194 offset = pos.video_offset;
205 AudioEngine::_jack_timebase_callback (jack_transport_state_t state, nframes_t nframes,
206 jack_position_t* pos, int new_position, void *arg)
208 static_cast<AudioEngine*> (arg)->jack_timebase_callback (state, nframes, pos, new_position);
212 AudioEngine::jack_timebase_callback (jack_transport_state_t state, nframes_t nframes,
213 jack_position_t* pos, int new_position)
215 if (_jack && session && session->synced_to_jack()) {
216 session->jack_timebase_callback (state, nframes, pos, new_position);
221 AudioEngine::_jack_sync_callback (jack_transport_state_t state, jack_position_t* pos, void* arg)
223 return static_cast<AudioEngine*> (arg)->jack_sync_callback (state, pos);
227 AudioEngine::jack_sync_callback (jack_transport_state_t state, jack_position_t* pos)
229 if (_jack && session) {
230 return session->jack_sync_callback (state, pos);
237 AudioEngine::_xrun_callback (void *arg)
239 AudioEngine* ae = static_cast<AudioEngine*> (arg);
240 if (ae->connected()) {
241 ae->Xrun (); /* EMIT SIGNAL */
247 AudioEngine::_graph_order_callback (void *arg)
249 AudioEngine* ae = static_cast<AudioEngine*> (arg);
250 if (ae->connected()) {
251 ae->GraphReordered (); /* EMIT SIGNAL */
257 AudioEngine::_process_callback (nframes_t nframes, void *arg)
259 return static_cast<AudioEngine *> (arg)->process_callback (nframes);
263 AudioEngine::_freewheel_callback (int onoff, void *arg)
265 static_cast<AudioEngine*>(arg)->_freewheeling = onoff;
269 AudioEngine::process_callback (nframes_t nframes)
271 // CycleTimer ct ("AudioEngine::process");
272 Glib::Mutex::Lock tm (_process_lock, Glib::TRY_LOCK);
273 nframes_t next_processed_frames;
275 /* handle wrap around of total frames counter */
277 if (max_frames - _processed_frames < nframes) {
278 next_processed_frames = nframes - (max_frames - _processed_frames);
280 next_processed_frames = _processed_frames + nframes;
283 if (!tm.locked() || session == 0) {
284 _processed_frames = next_processed_frames;
288 if (session_remove_pending) {
290 session_remove_pending = false;
291 session_removed.signal();
292 _processed_frames = next_processed_frames;
297 if (Freewheel (nframes)) {
298 jack_set_freewheel (_jack, false);
303 session->process (nframes);
306 /* we were zombified, maybe because a ladspa plugin took
307 too long, or jackd exited, or something like that.
310 _processed_frames = next_processed_frames;
314 if (last_monitor_check + monitor_check_interval < next_processed_frames) {
316 boost::shared_ptr<Ports> p = ports.reader();
318 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
323 if (port->_last_monitor != (x = port->monitoring_input ())) {
324 port->_last_monitor = x;
325 /* XXX I think this is dangerous, due to
326 a likely mutex in the signal handlers ...
328 port->MonitorInputChanged (x); /* EMIT SIGNAL */
331 last_monitor_check = next_processed_frames;
334 if (session->silent()) {
336 boost::shared_ptr<Ports> p = ports.reader();
338 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
342 if (port->sends_output()) {
343 Sample *buf = port->get_buffer(nframes);
344 memset (buf, 0, sizeof(Sample) * nframes);
345 // this should work but doesn't
346 //port->silence(0, nframes); //need to implement declicking fade
351 _processed_frames = next_processed_frames;
356 AudioEngine::_sample_rate_callback (nframes_t nframes, void *arg)
358 return static_cast<AudioEngine *> (arg)->jack_sample_rate_callback (nframes);
362 AudioEngine::jack_sample_rate_callback (nframes_t nframes)
364 _frame_rate = nframes;
365 _usecs_per_cycle = (int) floor ((((double) frames_per_cycle() / nframes)) * 1000000.0);
367 /* check for monitor input change every 1/10th of second */
369 monitor_check_interval = nframes / 10;
370 last_monitor_check = 0;
373 session->set_frame_rate (nframes);
376 SampleRateChanged (nframes); /* EMIT SIGNAL */
382 AudioEngine::_bufsize_callback (nframes_t nframes, void *arg)
384 return static_cast<AudioEngine *> (arg)->jack_bufsize_callback (nframes);
388 AudioEngine::jack_bufsize_callback (nframes_t nframes)
390 _buffer_size = nframes;
391 _usecs_per_cycle = (int) floor ((((double) nframes / frame_rate())) * 1000000.0);
392 last_monitor_check = 0;
394 boost::shared_ptr<Ports> p = ports.reader();
396 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
401 session->set_block_size (_buffer_size);
408 AudioEngine::stop_metering_thread ()
410 if (m_meter_thread) {
411 g_atomic_int_set (&m_meter_exit, 1);
412 m_meter_thread->join ();
418 AudioEngine::start_metering_thread ()
420 if (m_meter_thread == 0) {
421 g_atomic_int_set (&m_meter_exit, 0);
422 m_meter_thread = Glib::Thread::create (sigc::mem_fun(this, &AudioEngine::meter_thread),
423 500000, true, true, Glib::THREAD_PRIORITY_NORMAL);
428 AudioEngine::meter_thread ()
431 Glib::usleep (10000); /* 1/100th sec interval */
432 if (g_atomic_int_get(&m_meter_exit)) {
435 IO::update_meters ();
440 AudioEngine::set_session (Session *s)
442 Glib::Mutex::Lock pl (_process_lock);
448 nframes_t blocksize = jack_get_buffer_size (_jack);
450 /* page in as much of the session process code as we
451 can before we really start running.
454 session->process (blocksize);
455 session->process (blocksize);
456 session->process (blocksize);
457 session->process (blocksize);
458 session->process (blocksize);
459 session->process (blocksize);
460 session->process (blocksize);
461 session->process (blocksize);
466 AudioEngine::remove_session ()
468 Glib::Mutex::Lock lm (_process_lock);
473 session_remove_pending = true;
474 session_removed.wait(_process_lock);
485 AudioEngine::port_registration_failure (const std::string& portname)
487 string full_portname = jack_client_name;
488 full_portname += ':';
489 full_portname += portname;
492 jack_port_t* p = jack_port_by_name (_jack, full_portname.c_str());
496 reason = string_compose (_("a port with the name \"%1\" already exists: check for duplicated track/bus names"), portname);
498 reason = _("No more JACK ports are available. You will need to stop Ardour and restart JACK with ports if you need this many tracks.");
501 throw PortRegistrationFailure (string_compose (_("AudioEngine: cannot register port \"%1\": %2"), portname, reason).c_str());
505 AudioEngine::register_input_port (DataType type, const string& portname)
509 fatal << _("register input port called before engine was started") << endmsg;
516 jack_port_t *p = jack_port_register (_jack, portname.c_str(), type.to_jack_type(), JackPortIsInput, 0);
522 if ((newport = new Port (p)) != 0) {
523 RCUWriter<Ports> writer (ports);
524 boost::shared_ptr<Ports> ps = writer.get_copy ();
525 ps->insert (ps->begin(), newport);
526 /* writer goes out of scope, forces update */
532 port_registration_failure (portname);
539 AudioEngine::register_output_port (DataType type, const string& portname)
543 fatal << _("register output port called before engine was started") << endmsg;
552 if ((p = jack_port_register (_jack, portname.c_str(),
553 type.to_jack_type(), JackPortIsOutput, 0)) != 0) {
558 RCUWriter<Ports> writer (ports);
559 boost::shared_ptr<Ports> ps = writer.get_copy ();
561 newport = new Port (p);
562 ps->insert (ps->begin(), newport);
564 /* writer goes out of scope, forces update */
570 port_registration_failure (portname);
578 AudioEngine::unregister_port (Port *port)
581 /* probably happening when the engine has been halted by JACK,
582 in which case, there is nothing we can do here.
589 int ret = jack_port_unregister (_jack, port->_port);
595 RCUWriter<Ports> writer (ports);
596 boost::shared_ptr<Ports> ps = writer.get_copy ();
598 for (Ports::iterator i = ps->begin(); i != ps->end(); ++i) {
605 /* writer goes out of scope, forces update */
608 remove_connections_for (port);
619 AudioEngine::connect (const string& source, const string& destination)
623 fatal << _("connect called before engine was started") << endmsg;
630 string s = make_port_name_non_relative (source);
631 string d = make_port_name_non_relative (destination);
633 int ret = jack_connect (_jack, s.c_str(), d.c_str());
636 pair<string,string> c (s, d);
637 port_connections.push_back (c);
638 } else if (ret == EEXIST) {
639 error << string_compose(_("AudioEngine: connection already exists: %1 (%2) to %3 (%4)"),
640 source, s, destination, d)
643 error << string_compose(_("AudioEngine: cannot connect %1 (%2) to %3 (%4)"),
644 source, s, destination, d)
652 AudioEngine::disconnect (const string& source, const string& destination)
656 fatal << _("disconnect called before engine was started") << endmsg;
663 string s = make_port_name_non_relative (source);
664 string d = make_port_name_non_relative (destination);
666 int ret = jack_disconnect (_jack, s.c_str(), d.c_str());
669 pair<string,string> c (s, d);
670 PortConnections::iterator i;
672 if ((i = find (port_connections.begin(), port_connections.end(), c)) != port_connections.end()) {
673 port_connections.erase (i);
681 AudioEngine::disconnect (Port *port)
685 fatal << _("disconnect called before engine was started") << endmsg;
692 int ret = jack_port_disconnect (_jack, port->_port);
695 remove_connections_for (port);
703 AudioEngine::frame_rate ()
706 if (_frame_rate == 0) {
707 return (_frame_rate = jack_get_sample_rate (_jack));
712 fatal << X_("programming error: AudioEngine::frame_rate() called while disconnected from JACK")
720 AudioEngine::frames_per_cycle ()
723 if (_buffer_size == 0) {
724 return (_buffer_size = jack_get_buffer_size (_jack));
729 fatal << X_("programming error: AudioEngine::frame_rate() called while disconnected from JACK")
737 AudioEngine::get_port_by_name (const string& portname, bool keep)
739 Glib::Mutex::Lock lm (_process_lock);
743 fatal << _("get_port_by_name() called before engine was started") << endmsg;
750 /* check to see if we have a Port for this name already */
752 boost::shared_ptr<Ports> pr = ports.reader();
754 for (Ports::iterator i = pr->begin(); i != pr->end(); ++i) {
755 if (portname == (*i)->name()) {
762 if ((p = jack_port_by_name (_jack, portname.c_str())) != 0) {
763 Port *newport = new Port (p);
766 if (keep && newport->is_mine (_jack)) {
767 RCUWriter<Ports> writer (ports);
768 boost::shared_ptr<Ports> ps = writer.get_copy ();
769 ps->insert (newport);
770 /* writer goes out of scope, forces update */
783 AudioEngine::get_ports (const string& port_name_pattern, const string& type_name_pattern, uint32_t flags)
787 fatal << _("get_ports called before engine was started") << endmsg;
793 return jack_get_ports (_jack, port_name_pattern.c_str(), type_name_pattern.c_str(), flags);
797 AudioEngine::halted (void *arg)
799 AudioEngine* ae = static_cast<AudioEngine *> (arg);
800 bool was_running = ae->_running;
802 ae->stop_metering_thread ();
804 ae->_running = false;
805 ae->_buffer_size = 0;
809 ae->Halted(); /* EMIT SIGNAL */
814 AudioEngine::can_request_hardware_monitoring ()
822 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortCanMonitor)) == 0) {
833 AudioEngine::n_physical_audio_outputs () const
842 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsInput)) == 0) {
846 for (i = 0; ports[i]; ++i);
853 AudioEngine::n_physical_audio_inputs () const
862 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsOutput)) == 0) {
867 for (i = 0; ports[i]; ++i);
874 AudioEngine::get_physical_audio_inputs (vector<string>& ins)
883 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsOutput)) == 0) {
888 for (i = 0; ports[i]; ++i) {
889 ins.push_back (ports[i]);
896 AudioEngine::get_physical_audio_outputs (vector<string>& outs)
905 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsInput)) == 0) {
910 for (i = 0; ports[i]; ++i) {
911 outs.push_back (ports[i]);
918 AudioEngine::get_nth_physical_audio (uint32_t n, int flag)
925 fatal << _("get_nth_physical called before engine was connected") << endmsg;
929 ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|flag);
935 for (i = 0; i < n && ports[i]; ++i);
941 free ((char *) ports);
947 AudioEngine::get_port_total_latency (const Port& port)
950 fatal << _("get_port_total_latency() called with no JACK client connection") << endmsg;
954 return jack_port_get_total_latency (_jack, port._port);
958 AudioEngine::transport_stop ()
961 jack_transport_stop (_jack);
966 AudioEngine::transport_start ()
969 jack_transport_start (_jack);
974 AudioEngine::transport_locate (nframes_t where)
976 // cerr << "tell JACK to locate to " << where << endl;
978 jack_transport_locate (_jack, where);
982 AudioEngine::TransportState
983 AudioEngine::transport_state ()
987 return (TransportState) jack_transport_query (_jack, &pos);
989 return (TransportState) JackTransportStopped;
994 AudioEngine::reset_timebase ()
997 if (Config->get_jack_time_master()) {
998 return jack_set_timebase_callback (_jack, 0, _jack_timebase_callback, this);
1000 return jack_release_timebase (_jack);
1008 AudioEngine::freewheel (bool onoff)
1012 if (onoff != _freewheeling) {
1015 _freewheel_thread_registered = false;
1018 return jack_set_freewheel (_jack, onoff);
1021 /* already doing what has been asked for */
1031 AudioEngine::remove_all_ports ()
1033 /* process lock MUST be held */
1036 boost::shared_ptr<Ports> p = ports.reader();
1038 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
1039 jack_port_unregister (_jack, (*i)->_port);
1044 RCUWriter<Ports> writer (ports);
1045 boost::shared_ptr<Ports> ps = writer.get_copy ();
1049 port_connections.clear ();
1053 AudioEngine::remove_connections_for (Port* port)
1055 for (PortConnections::iterator i = port_connections.begin(); i != port_connections.end(); ) {
1056 PortConnections::iterator tmp;
1061 if ((*i).first == port->name()) {
1062 port_connections.erase (i);
1069 #ifdef HAVE_JACK_CLIENT_OPEN
1072 AudioEngine::connect_to_jack (string client_name)
1074 jack_options_t options = JackNullOption;
1075 jack_status_t status;
1076 const char *server_name = NULL;
1078 jack_client_name = client_name; /* might be reset below */
1079 _jack = jack_client_open (jack_client_name.c_str(), options, &status, server_name);
1081 if (_jack == NULL) {
1082 /* just return without an error message. something else will take care of it */
1086 if (status & JackNameNotUnique) {
1087 jack_client_name = jack_get_client_name (_jack);
1090 jack_set_error_function (ardour_jack_error);
1098 AudioEngine::connect_to_jack (string client_name)
1100 jack_client_name = client_name;
1102 if ((_jack = jack_client_new (client_name.c_str())) == 0) {
1109 #endif /* HAVE_JACK_CLIENT_OPEN */
1112 AudioEngine::disconnect_from_jack ()
1120 stop_metering_thread ();
1124 Glib::Mutex::Lock lm (_process_lock);
1125 jack_client_close (_jack);
1134 Stopped(); /* EMIT SIGNAL */
1141 AudioEngine::reconnect_to_jack ()
1144 disconnect_from_jack ();
1145 /* XXX give jackd a chance */
1146 Glib::usleep (250000);
1149 if (connect_to_jack (jack_client_name)) {
1150 error << _("failed to connect to JACK") << endmsg;
1156 boost::shared_ptr<Ports> p = ports.reader ();
1158 for (i = p->begin(); i != p->end(); ++i) {
1160 /* XXX hack hack hack */
1162 string long_name = (*i)->name();
1165 short_name = long_name.substr (long_name.find_last_of (':') + 1);
1167 if (((*i)->_port = jack_port_register (_jack, short_name.c_str(), (*i)->type(), (*i)->flags(), 0)) == 0) {
1168 error << string_compose (_("could not reregister %1"), (*i)->name()) << endmsg;
1175 if ((*i)->flags() & JackPortIsOutput) {
1176 (*i)->silence (jack_get_buffer_size (_jack), 0);
1180 if (i != p->end()) {
1182 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
1183 jack_port_unregister (_jack, (*i)->_port);
1190 session->reset_jack_connection (_jack);
1191 nframes_t blocksize = jack_get_buffer_size (_jack);
1192 session->set_block_size (blocksize);
1193 session->set_frame_rate (jack_get_sample_rate (_jack));
1196 last_monitor_check = 0;
1198 jack_on_shutdown (_jack, halted, this);
1199 jack_set_graph_order_callback (_jack, _graph_order_callback, this);
1200 jack_set_thread_init_callback (_jack, _thread_init_callback, this);
1201 jack_set_process_callback (_jack, _process_callback, this);
1202 jack_set_sample_rate_callback (_jack, _sample_rate_callback, this);
1203 jack_set_buffer_size_callback (_jack, _bufsize_callback, this);
1204 jack_set_xrun_callback (_jack, _xrun_callback, this);
1205 jack_set_sync_callback (_jack, _jack_sync_callback, this);
1206 jack_set_freewheel_callback (_jack, _freewheel_callback, this);
1208 if (Config->get_jack_time_master()) {
1209 jack_set_timebase_callback (_jack, 0, _jack_timebase_callback, this);
1212 if (jack_activate (_jack) == 0) {
1219 /* re-establish connections */
1221 for (PortConnections::iterator i = port_connections.begin(); i != port_connections.end(); ++i) {
1224 jack_client_t* j = _jack;
1226 /* JACK could have zombified us. */
1229 error << _("Disconnected from JACK while reconnecting. You should quit Ardour now.") << endmsg;
1233 if ((err = jack_connect (j, (*i).first.c_str(), (*i).second.c_str())) != 0) {
1234 if (err != EEXIST) {
1235 error << string_compose (_("could not reconnect %1 and %2 (err = %3)"),
1236 (*i).first, (*i).second, err)
1242 Running (); /* EMIT SIGNAL*/
1244 start_metering_thread ();
1250 AudioEngine::request_buffer_size (nframes_t nframes)
1254 if (nframes == jack_get_buffer_size (_jack)) {
1258 return jack_set_buffer_size (_jack, nframes);
1266 AudioEngine::update_total_latencies ()
1268 #ifdef HAVE_JACK_RECOMPUTE_LATENCIES
1270 jack_recompute_total_latencies (_jack);
1276 AudioEngine::make_port_name_relative (string portname)
1278 string::size_type len;
1279 string::size_type n;
1281 len = portname.length();
1283 for (n = 0; n < len; ++n) {
1284 if (portname[n] == ':') {
1289 if ((n != len) && (portname.substr (0, n) == jack_client_name)) {
1290 return portname.substr (n+1);
1297 AudioEngine::make_port_name_non_relative (string portname)
1301 if (portname.find_first_of (':') != string::npos) {
1305 str = jack_client_name;
1313 AudioEngine::is_realtime () const
1316 return jack_is_realtime (_jack);