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>
39 #include <ardour/timestamps.h>
44 using namespace ARDOUR;
47 gint AudioEngine::m_meter_exit;
50 ardour_jack_error (const char* msg)
52 // throw JACK errors away - they cause visual clutter
53 // error << "JACK: " << msg << endmsg;
56 AudioEngine::AudioEngine (string client_name)
60 session_remove_pending = false;
63 last_monitor_check = 0;
64 monitor_check_interval = max_frames;
65 _processed_frames = 0;
70 _freewheel_thread_registered = false;
71 _freewheeling = false;
74 g_atomic_int_set (&m_meter_exit, 0);
76 if (connect_to_jack (client_name)) {
77 throw NoBackendAvailable ();
81 AudioEngine::~AudioEngine ()
84 Glib::Mutex::Lock tm (_process_lock);
85 session_removed.signal ();
88 jack_client_close (_jack);
92 stop_metering_thread ();
97 _thread_init_callback (void *arg)
99 /* make sure that anybody who needs to know about this thread
103 PBD::notify_gui_about_thread_creation (pthread_self(), X_("Audioengine"), 4096);
107 AudioEngine::start ()
110 error << _("AudioEngine::start() called while disconnected from JACK") << endmsg;
117 nframes_t blocksize = jack_get_buffer_size (_jack);
119 BootMessage (_("Connect session to engine"));
121 session->set_block_size (blocksize);
122 session->set_frame_rate (jack_get_sample_rate (_jack));
124 /* page in as much of the session process code as we
125 can before we really start running.
128 session->process (blocksize);
129 session->process (blocksize);
130 session->process (blocksize);
131 session->process (blocksize);
132 session->process (blocksize);
133 session->process (blocksize);
134 session->process (blocksize);
135 session->process (blocksize);
138 _processed_frames = 0;
139 last_monitor_check = 0;
141 jack_on_shutdown (_jack, halted, this);
142 jack_set_graph_order_callback (_jack, _graph_order_callback, this);
143 jack_set_thread_init_callback (_jack, _thread_init_callback, this);
144 jack_set_process_callback (_jack, _process_callback, this);
145 jack_set_sample_rate_callback (_jack, _sample_rate_callback, this);
146 jack_set_buffer_size_callback (_jack, _bufsize_callback, this);
147 jack_set_xrun_callback (_jack, _xrun_callback, this);
148 jack_set_sync_callback (_jack, _jack_sync_callback, this);
149 jack_set_freewheel_callback (_jack, _freewheel_callback, this);
151 if (Config->get_jack_time_master()) {
152 jack_set_timebase_callback (_jack, 0, _jack_timebase_callback, this);
155 if (jack_activate (_jack) == 0) {
158 Running(); /* EMIT SIGNAL */
160 // error << _("cannot activate JACK client") << endmsg;
163 start_metering_thread();
166 return _running ? 0 : -1;
170 AudioEngine::stop (bool forever)
174 disconnect_from_jack ();
176 jack_deactivate (_jack);
177 Stopped(); /* EMIT SIGNAL */
181 return _running ? -1 : 0;
186 AudioEngine::get_sync_offset (nframes_t& offset) const
189 #ifdef HAVE_JACK_VIDEO_SUPPORT
194 (void) jack_transport_query (_jack, &pos);
196 if (pos.valid & JackVideoFrameOffset) {
197 offset = pos.video_offset;
208 AudioEngine::_jack_timebase_callback (jack_transport_state_t state, nframes_t nframes,
209 jack_position_t* pos, int new_position, void *arg)
211 static_cast<AudioEngine*> (arg)->jack_timebase_callback (state, nframes, pos, new_position);
215 AudioEngine::jack_timebase_callback (jack_transport_state_t state, nframes_t nframes,
216 jack_position_t* pos, int new_position)
218 if (_jack && session && session->synced_to_jack()) {
219 session->jack_timebase_callback (state, nframes, pos, new_position);
224 AudioEngine::_jack_sync_callback (jack_transport_state_t state, jack_position_t* pos, void* arg)
226 return static_cast<AudioEngine*> (arg)->jack_sync_callback (state, pos);
230 AudioEngine::jack_sync_callback (jack_transport_state_t state, jack_position_t* pos)
232 if (_jack && session) {
233 return session->jack_sync_callback (state, pos);
240 AudioEngine::_xrun_callback (void *arg)
242 AudioEngine* ae = static_cast<AudioEngine*> (arg);
243 if (ae->connected()) {
244 ae->Xrun (); /* EMIT SIGNAL */
250 AudioEngine::_graph_order_callback (void *arg)
252 AudioEngine* ae = static_cast<AudioEngine*> (arg);
253 if (ae->connected()) {
254 ae->GraphReordered (); /* EMIT SIGNAL */
260 AudioEngine::_process_callback (nframes_t nframes, void *arg)
262 return static_cast<AudioEngine *> (arg)->process_callback (nframes);
266 AudioEngine::_freewheel_callback (int onoff, void *arg)
268 static_cast<AudioEngine*>(arg)->_freewheeling = onoff;
272 AudioEngine::process_callback (nframes_t nframes)
274 // CycleTimer ct ("AudioEngine::process");
275 Glib::Mutex::Lock tm (_process_lock, Glib::TRY_LOCK);
276 nframes_t next_processed_frames;
278 /* handle wrap around of total frames counter */
280 if (max_frames - _processed_frames < nframes) {
281 next_processed_frames = nframes - (max_frames - _processed_frames);
283 next_processed_frames = _processed_frames + nframes;
286 if (!tm.locked() || session == 0) {
287 _processed_frames = next_processed_frames;
291 if (session_remove_pending) {
293 session_remove_pending = false;
294 session_removed.signal();
295 _processed_frames = next_processed_frames;
300 if (Freewheel (nframes)) {
301 jack_set_freewheel (_jack, false);
306 session->process (nframes);
309 /* we were zombified, maybe because a ladspa plugin took
310 too long, or jackd exited, or something like that.
313 _processed_frames = next_processed_frames;
317 if (last_monitor_check + monitor_check_interval < next_processed_frames) {
319 boost::shared_ptr<Ports> p = ports.reader();
321 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
326 if (port->_last_monitor != (x = port->monitoring_input ())) {
327 port->_last_monitor = x;
328 /* XXX I think this is dangerous, due to
329 a likely mutex in the signal handlers ...
331 port->MonitorInputChanged (x); /* EMIT SIGNAL */
334 last_monitor_check = next_processed_frames;
337 if (session->silent()) {
339 boost::shared_ptr<Ports> p = ports.reader();
341 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
345 if (port->sends_output()) {
346 Sample *buf = port->get_buffer(nframes);
347 memset (buf, 0, sizeof(Sample) * nframes);
348 // this should work but doesn't
349 //port->silence(0, nframes); //need to implement declicking fade
354 _processed_frames = next_processed_frames;
359 AudioEngine::_sample_rate_callback (nframes_t nframes, void *arg)
361 return static_cast<AudioEngine *> (arg)->jack_sample_rate_callback (nframes);
365 AudioEngine::jack_sample_rate_callback (nframes_t nframes)
367 _frame_rate = nframes;
368 _usecs_per_cycle = (int) floor ((((double) frames_per_cycle() / nframes)) * 1000000.0);
370 /* check for monitor input change every 1/10th of second */
372 monitor_check_interval = nframes / 10;
373 last_monitor_check = 0;
376 session->set_frame_rate (nframes);
379 SampleRateChanged (nframes); /* EMIT SIGNAL */
385 AudioEngine::_bufsize_callback (nframes_t nframes, void *arg)
387 return static_cast<AudioEngine *> (arg)->jack_bufsize_callback (nframes);
391 AudioEngine::jack_bufsize_callback (nframes_t nframes)
393 _buffer_size = nframes;
394 _usecs_per_cycle = (int) floor ((((double) nframes / frame_rate())) * 1000000.0);
395 last_monitor_check = 0;
397 boost::shared_ptr<Ports> p = ports.reader();
399 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
404 session->set_block_size (_buffer_size);
411 AudioEngine::stop_metering_thread ()
413 if (m_meter_thread) {
414 g_atomic_int_set (&m_meter_exit, 1);
415 m_meter_thread->join ();
421 AudioEngine::start_metering_thread ()
423 if (m_meter_thread == 0) {
424 g_atomic_int_set (&m_meter_exit, 0);
425 m_meter_thread = Glib::Thread::create (sigc::mem_fun(this, &AudioEngine::meter_thread),
426 500000, true, true, Glib::THREAD_PRIORITY_NORMAL);
431 AudioEngine::meter_thread ()
434 Glib::usleep (10000); /* 1/100th sec interval */
435 if (g_atomic_int_get(&m_meter_exit)) {
438 IO::update_meters ();
443 AudioEngine::set_session (Session *s)
445 Glib::Mutex::Lock pl (_process_lock);
451 nframes_t blocksize = jack_get_buffer_size (_jack);
453 /* page in as much of the session process code as we
454 can before we really start running.
457 session->process (blocksize);
458 session->process (blocksize);
459 session->process (blocksize);
460 session->process (blocksize);
461 session->process (blocksize);
462 session->process (blocksize);
463 session->process (blocksize);
464 session->process (blocksize);
469 AudioEngine::remove_session ()
471 Glib::Mutex::Lock lm (_process_lock);
476 session_remove_pending = true;
477 session_removed.wait(_process_lock);
488 AudioEngine::port_registration_failure (const std::string& portname)
490 string full_portname = jack_client_name;
491 full_portname += ':';
492 full_portname += portname;
495 jack_port_t* p = jack_port_by_name (_jack, full_portname.c_str());
499 reason = _("a port with this name already exists: check for duplicated track/bus names");
501 reason = _("unknown error");
504 throw PortRegistrationFailure (string_compose (_("AudioEngine: cannot register port \"%1\": %2"), portname, reason).c_str());
508 AudioEngine::register_input_port (DataType type, const string& portname)
512 fatal << _("register input port called before engine was started") << endmsg;
519 jack_port_t *p = jack_port_register (_jack, portname.c_str(), type.to_jack_type(), JackPortIsInput, 0);
525 if ((newport = new Port (p)) != 0) {
526 RCUWriter<Ports> writer (ports);
527 boost::shared_ptr<Ports> ps = writer.get_copy ();
528 ps->insert (ps->begin(), newport);
529 /* writer goes out of scope, forces update */
535 port_registration_failure (portname);
542 AudioEngine::register_output_port (DataType type, const string& portname)
546 fatal << _("register output port called before engine was started") << endmsg;
555 if ((p = jack_port_register (_jack, portname.c_str(),
556 type.to_jack_type(), JackPortIsOutput, 0)) != 0) {
561 RCUWriter<Ports> writer (ports);
562 boost::shared_ptr<Ports> ps = writer.get_copy ();
564 newport = new Port (p);
565 ps->insert (ps->begin(), newport);
567 /* writer goes out of scope, forces update */
573 port_registration_failure (portname);
581 AudioEngine::unregister_port (Port *port)
584 /* probably happening when the engine has been halted by JACK,
585 in which case, there is nothing we can do here.
592 int ret = jack_port_unregister (_jack, port->_port);
598 RCUWriter<Ports> writer (ports);
599 boost::shared_ptr<Ports> ps = writer.get_copy ();
601 for (Ports::iterator i = ps->begin(); i != ps->end(); ++i) {
608 /* writer goes out of scope, forces update */
611 remove_connections_for (port);
622 AudioEngine::connect (const string& source, const string& destination)
626 fatal << _("connect called before engine was started") << endmsg;
633 string s = make_port_name_non_relative (source);
634 string d = make_port_name_non_relative (destination);
636 int ret = jack_connect (_jack, s.c_str(), d.c_str());
639 pair<string,string> c (s, d);
640 port_connections.push_back (c);
641 } else if (ret == EEXIST) {
642 error << string_compose(_("AudioEngine: connection already exists: %1 (%2) to %3 (%4)"),
643 source, s, destination, d)
646 error << string_compose(_("AudioEngine: cannot connect %1 (%2) to %3 (%4)"),
647 source, s, destination, d)
655 AudioEngine::disconnect (const string& source, const string& destination)
659 fatal << _("disconnect called before engine was started") << endmsg;
666 string s = make_port_name_non_relative (source);
667 string d = make_port_name_non_relative (destination);
669 int ret = jack_disconnect (_jack, s.c_str(), d.c_str());
672 pair<string,string> c (s, d);
673 PortConnections::iterator i;
675 if ((i = find (port_connections.begin(), port_connections.end(), c)) != port_connections.end()) {
676 port_connections.erase (i);
684 AudioEngine::disconnect (Port *port)
688 fatal << _("disconnect called before engine was started") << endmsg;
695 int ret = jack_port_disconnect (_jack, port->_port);
698 remove_connections_for (port);
706 AudioEngine::frame_rate ()
709 if (_frame_rate == 0) {
710 return (_frame_rate = jack_get_sample_rate (_jack));
715 fatal << X_("programming error: AudioEngine::frame_rate() called while disconnected from JACK")
723 AudioEngine::frames_per_cycle ()
726 if (_buffer_size == 0) {
727 return (_buffer_size = jack_get_buffer_size (_jack));
732 fatal << X_("programming error: AudioEngine::frame_rate() called while disconnected from JACK")
740 AudioEngine::get_port_by_name (const string& portname, bool keep)
742 Glib::Mutex::Lock lm (_process_lock);
746 fatal << _("get_port_by_name() called before engine was started") << endmsg;
753 /* check to see if we have a Port for this name already */
755 boost::shared_ptr<Ports> pr = ports.reader();
757 for (Ports::iterator i = pr->begin(); i != pr->end(); ++i) {
758 if (portname == (*i)->name()) {
765 if ((p = jack_port_by_name (_jack, portname.c_str())) != 0) {
766 Port *newport = new Port (p);
769 if (keep && newport->is_mine (_jack)) {
770 RCUWriter<Ports> writer (ports);
771 boost::shared_ptr<Ports> ps = writer.get_copy ();
772 ps->insert (newport);
773 /* writer goes out of scope, forces update */
786 AudioEngine::get_ports (const string& port_name_pattern, const string& type_name_pattern, uint32_t flags)
790 fatal << _("get_ports called before engine was started") << endmsg;
796 return jack_get_ports (_jack, port_name_pattern.c_str(), type_name_pattern.c_str(), flags);
800 AudioEngine::halted (void *arg)
802 AudioEngine* ae = static_cast<AudioEngine *> (arg);
803 bool was_running = ae->_running;
805 ae->stop_metering_thread ();
807 ae->_running = false;
808 ae->_buffer_size = 0;
812 ae->Halted(); /* EMIT SIGNAL */
817 AudioEngine::can_request_hardware_monitoring ()
825 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortCanMonitor)) == 0) {
836 AudioEngine::n_physical_audio_outputs () const
845 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsInput)) == 0) {
849 for (i = 0; ports[i]; ++i);
856 AudioEngine::n_physical_audio_inputs () const
865 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsOutput)) == 0) {
870 for (i = 0; ports[i]; ++i);
877 AudioEngine::get_physical_audio_inputs (vector<string>& ins)
886 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsOutput)) == 0) {
891 for (i = 0; ports[i]; ++i) {
892 ins.push_back (ports[i]);
899 AudioEngine::get_physical_audio_outputs (vector<string>& outs)
908 if ((ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsInput)) == 0) {
913 for (i = 0; ports[i]; ++i) {
914 outs.push_back (ports[i]);
921 AudioEngine::get_nth_physical_audio (uint32_t n, int flag)
928 fatal << _("get_nth_physical called before engine was connected") << endmsg;
932 ports = jack_get_ports (_jack, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|flag);
938 for (i = 0; i < n && ports[i]; ++i);
944 free ((char *) ports);
950 AudioEngine::get_port_total_latency (const Port& port)
953 fatal << _("get_port_total_latency() called with no JACK client connection") << endmsg;
957 return jack_port_get_total_latency (_jack, port._port);
961 AudioEngine::transport_stop ()
964 jack_transport_stop (_jack);
969 AudioEngine::transport_start ()
972 jack_transport_start (_jack);
977 AudioEngine::transport_locate (nframes_t where)
979 // cerr << "tell JACK to locate to " << where << endl;
981 jack_transport_locate (_jack, where);
985 AudioEngine::TransportState
986 AudioEngine::transport_state ()
990 return (TransportState) jack_transport_query (_jack, &pos);
992 return (TransportState) JackTransportStopped;
997 AudioEngine::reset_timebase ()
1000 if (Config->get_jack_time_master()) {
1001 return jack_set_timebase_callback (_jack, 0, _jack_timebase_callback, this);
1003 return jack_release_timebase (_jack);
1011 AudioEngine::freewheel (bool onoff)
1015 if (onoff != _freewheeling) {
1018 _freewheel_thread_registered = false;
1021 return jack_set_freewheel (_jack, onoff);
1024 /* already doing what has been asked for */
1034 AudioEngine::remove_all_ports ()
1036 /* process lock MUST be held */
1039 boost::shared_ptr<Ports> p = ports.reader();
1041 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
1042 jack_port_unregister (_jack, (*i)->_port);
1047 RCUWriter<Ports> writer (ports);
1048 boost::shared_ptr<Ports> ps = writer.get_copy ();
1052 port_connections.clear ();
1056 AudioEngine::remove_connections_for (Port* port)
1058 for (PortConnections::iterator i = port_connections.begin(); i != port_connections.end(); ) {
1059 PortConnections::iterator tmp;
1064 if ((*i).first == port->name()) {
1065 port_connections.erase (i);
1072 #ifdef HAVE_JACK_CLIENT_OPEN
1075 AudioEngine::connect_to_jack (string client_name)
1077 jack_options_t options = JackNullOption;
1078 jack_status_t status;
1079 const char *server_name = NULL;
1081 jack_client_name = client_name; /* might be reset below */
1082 _jack = jack_client_open (jack_client_name.c_str(), options, &status, server_name);
1084 if (_jack == NULL) {
1085 /* just return without an error message. something else will take care of it */
1089 if (status & JackNameNotUnique) {
1090 jack_client_name = jack_get_client_name (_jack);
1093 jack_set_error_function (ardour_jack_error);
1101 AudioEngine::connect_to_jack (string client_name)
1103 jack_client_name = client_name;
1105 if ((_jack = jack_client_new (client_name.c_str())) == 0) {
1112 #endif /* HAVE_JACK_CLIENT_OPEN */
1115 AudioEngine::disconnect_from_jack ()
1123 stop_metering_thread ();
1127 Glib::Mutex::Lock lm (_process_lock);
1128 jack_client_close (_jack);
1137 Stopped(); /* EMIT SIGNAL */
1144 AudioEngine::reconnect_to_jack ()
1147 disconnect_from_jack ();
1148 /* XXX give jackd a chance */
1149 Glib::usleep (250000);
1152 if (connect_to_jack (jack_client_name)) {
1153 error << _("failed to connect to JACK") << endmsg;
1159 boost::shared_ptr<Ports> p = ports.reader ();
1161 for (i = p->begin(); i != p->end(); ++i) {
1163 /* XXX hack hack hack */
1165 string long_name = (*i)->name();
1168 short_name = long_name.substr (long_name.find_last_of (':') + 1);
1170 if (((*i)->_port = jack_port_register (_jack, short_name.c_str(), (*i)->type(), (*i)->flags(), 0)) == 0) {
1171 error << string_compose (_("could not reregister %1"), (*i)->name()) << endmsg;
1178 if ((*i)->flags() & JackPortIsOutput) {
1179 (*i)->silence (jack_get_buffer_size (_jack), 0);
1183 if (i != p->end()) {
1185 for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
1186 jack_port_unregister (_jack, (*i)->_port);
1193 session->reset_jack_connection (_jack);
1194 nframes_t blocksize = jack_get_buffer_size (_jack);
1195 session->set_block_size (blocksize);
1196 session->set_frame_rate (jack_get_sample_rate (_jack));
1199 last_monitor_check = 0;
1201 jack_on_shutdown (_jack, halted, this);
1202 jack_set_graph_order_callback (_jack, _graph_order_callback, this);
1203 jack_set_thread_init_callback (_jack, _thread_init_callback, this);
1204 jack_set_process_callback (_jack, _process_callback, this);
1205 jack_set_sample_rate_callback (_jack, _sample_rate_callback, this);
1206 jack_set_buffer_size_callback (_jack, _bufsize_callback, this);
1207 jack_set_xrun_callback (_jack, _xrun_callback, this);
1208 jack_set_sync_callback (_jack, _jack_sync_callback, this);
1209 jack_set_freewheel_callback (_jack, _freewheel_callback, this);
1211 if (Config->get_jack_time_master()) {
1212 jack_set_timebase_callback (_jack, 0, _jack_timebase_callback, this);
1215 if (jack_activate (_jack) == 0) {
1222 /* re-establish connections */
1224 for (PortConnections::iterator i = port_connections.begin(); i != port_connections.end(); ++i) {
1227 jack_client_t* j = _jack;
1229 /* JACK could have zombified us. */
1232 error << _("Disconnected from JACK while reconnecting. You should quit Ardour now.") << endmsg;
1236 if ((err = jack_connect (j, (*i).first.c_str(), (*i).second.c_str())) != 0) {
1237 if (err != EEXIST) {
1238 error << string_compose (_("could not reconnect %1 and %2 (err = %3)"),
1239 (*i).first, (*i).second, err)
1245 Running (); /* EMIT SIGNAL*/
1247 start_metering_thread ();
1253 AudioEngine::request_buffer_size (nframes_t nframes)
1257 if (nframes == jack_get_buffer_size (_jack)) {
1261 return jack_set_buffer_size (_jack, nframes);
1269 AudioEngine::update_total_latencies ()
1271 #ifdef HAVE_JACK_RECOMPUTE_LATENCIES
1273 jack_recompute_total_latencies (_jack);
1279 AudioEngine::make_port_name_relative (string portname)
1281 string::size_type len;
1282 string::size_type n;
1284 len = portname.length();
1286 for (n = 0; n < len; ++n) {
1287 if (portname[n] == ':') {
1292 if ((n != len) && (portname.substr (0, n) == jack_client_name)) {
1293 return portname.substr (n+1);
1300 AudioEngine::make_port_name_non_relative (string portname)
1304 if (portname.find_first_of (':') != string::npos) {
1308 str = jack_client_name;
1316 AudioEngine::is_realtime () const
1319 return jack_is_realtime (_jack);