2 * Copyright (C) 2015-2015 Robin Gareus <robin@gareus.org>
3 * Copyright (C) 2013 Paul Davis
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.
22 #ifndef PLATFORM_WINDOWS
29 #include "portaudio_backend.h"
30 #include "rt_thread.h"
32 #include "pbd/compose.h"
33 #include "pbd/error.h"
34 #include "pbd/file_utils.h"
35 #include "ardour/filesystem_paths.h"
36 #include "ardour/port_manager.h"
39 #include "win_utils.h"
42 using namespace ARDOUR;
46 const char * const winmme_driver_name = X_("WinMME");
50 static std::string s_instance_name;
51 size_t PortAudioBackend::_max_buffer_size = 8192;
52 std::vector<std::string> PortAudioBackend::_midi_options;
53 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_input_audio_device_status;
54 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_output_audio_device_status;
56 PortAudioBackend::PortAudioBackend (AudioEngine& e, AudioBackendInfo& info)
57 : AudioBackend (e, info)
62 , _measure_latency (false)
64 , m_total_deviation_us(0)
65 , m_max_deviation_us(0)
66 , _input_audio_device("")
67 , _output_audio_device("")
68 , _midi_driver_option(_("None"))
70 , _samples_per_period (1024)
73 , _systemic_audio_input_latency (0)
74 , _systemic_audio_output_latency (0)
76 , _processed_samples (0)
77 , _port_change_flag (false)
79 _instance_name = s_instance_name;
80 pthread_mutex_init (&_port_callback_mutex, 0);
82 _pcmio = new PortAudioIO ();
83 _midiio = new WinMMEMidiIO ();
86 PortAudioBackend::~PortAudioBackend ()
88 delete _pcmio; _pcmio = 0;
89 delete _midiio; _midiio = 0;
90 pthread_mutex_destroy (&_port_callback_mutex);
93 /* AUDIOBACKEND API */
96 PortAudioBackend::name () const
98 return X_("PortAudio");
102 PortAudioBackend::is_realtime () const
108 PortAudioBackend::requires_driver_selection() const
110 // we could do this but implementation would need changing
112 if (enumerate_drivers().size() == 1) {
119 std::vector<std::string>
120 PortAudioBackend::enumerate_drivers () const
122 DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
123 std::vector<std::string> currently_available;
124 _pcmio->host_api_list (currently_available);
125 return currently_available;
129 PortAudioBackend::set_driver (const std::string& name)
131 _pcmio->set_host_api (name);
136 PortAudioBackend::use_separate_input_and_output_devices () const
141 std::vector<AudioBackend::DeviceStatus>
142 PortAudioBackend::enumerate_devices () const
144 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
145 return std::vector<AudioBackend::DeviceStatus>();
148 std::vector<AudioBackend::DeviceStatus>
149 PortAudioBackend::enumerate_input_devices () const
152 _input_audio_device_status.clear();
153 std::map<int, std::string> input_devices;
154 _pcmio->input_device_list(input_devices);
156 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
157 if (_input_audio_device == "") _input_audio_device = i->second;
158 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
160 return _input_audio_device_status;
163 std::vector<AudioBackend::DeviceStatus>
164 PortAudioBackend::enumerate_output_devices () const
167 _output_audio_device_status.clear();
168 std::map<int, std::string> output_devices;
169 _pcmio->output_device_list(output_devices);
171 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
172 if (_output_audio_device == "") _output_audio_device = i->second;
173 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
175 return _output_audio_device_status;
179 PortAudioBackend::available_sample_rates (const std::string&) const
181 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
182 std::vector<float> sr;
183 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
187 std::vector<uint32_t>
188 PortAudioBackend::available_buffer_sizes (const std::string&) const
190 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
191 std::vector<uint32_t> bs;
192 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
197 PortAudioBackend::available_input_channel_count (const std::string&) const
199 return 128; // TODO query current device
203 PortAudioBackend::available_output_channel_count (const std::string&) const
205 return 128; // TODO query current device
209 PortAudioBackend::can_change_sample_rate_when_running () const
215 PortAudioBackend::can_change_buffer_size_when_running () const
217 return false; // TODO
221 PortAudioBackend::set_device_name (const std::string& d)
223 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
228 PortAudioBackend::set_input_device_name (const std::string& d)
230 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
231 _input_audio_device = d;
236 PortAudioBackend::set_output_device_name (const std::string& d)
238 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
239 _output_audio_device = d;
244 PortAudioBackend::set_sample_rate (float sr)
246 if (sr <= 0) { return -1; }
247 // TODO check if it's in the list of valid SR
249 engine.sample_rate_change (sr);
254 PortAudioBackend::set_buffer_size (uint32_t bs)
256 if (bs <= 0 || bs >= _max_buffer_size) {
259 _samples_per_period = bs;
260 engine.buffer_size_change (bs);
265 PortAudioBackend::set_interleaved (bool yn)
267 if (!yn) { return 0; }
272 PortAudioBackend::set_input_channels (uint32_t cc)
279 PortAudioBackend::set_output_channels (uint32_t cc)
286 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
288 _systemic_audio_input_latency = sl;
293 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
295 _systemic_audio_output_latency = sl;
299 /* Retrieving parameters */
301 PortAudioBackend::device_name () const
307 PortAudioBackend::input_device_name () const
309 return _input_audio_device;
313 PortAudioBackend::output_device_name () const
315 return _output_audio_device;
319 PortAudioBackend::sample_rate () const
325 PortAudioBackend::buffer_size () const
327 return _samples_per_period;
331 PortAudioBackend::interleaved () const
337 PortAudioBackend::input_channels () const
343 PortAudioBackend::output_channels () const
349 PortAudioBackend::systemic_input_latency () const
351 return _systemic_audio_input_latency;
355 PortAudioBackend::systemic_output_latency () const
357 return _systemic_audio_output_latency;
362 std::vector<std::string>
363 PortAudioBackend::enumerate_midi_options () const
365 if (_midi_options.empty()) {
366 _midi_options.push_back (winmme_driver_name);
367 _midi_options.push_back (_("None"));
369 return _midi_options;
373 PortAudioBackend::set_midi_option (const std::string& opt)
375 if (opt != _("None") && opt != winmme_driver_name) {
378 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
379 _midi_driver_option = opt;
384 PortAudioBackend::midi_option () const
386 return _midi_driver_option;
391 static void * pthread_process (void *arg)
393 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
394 d->main_process_thread ();
400 PortAudioBackend::_start (bool for_latency_measurement)
402 if (!_active && _run) {
403 // recover from 'halted', reap threads
407 if (_active || _run) {
408 PBD::error << _("PortAudioBackend: already active.") << endmsg;
413 PBD::warning << _("PortAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
414 _system_inputs.clear();
415 _system_outputs.clear();
416 _system_midi_in.clear();
417 _system_midi_out.clear();
421 /* reset internal state */
423 _freewheeling = false;
426 _pcmio->pcm_setup (name_to_id(_input_audio_device), name_to_id(_output_audio_device), _samplerate, _samples_per_period);
428 switch (_pcmio->state ()) {
429 case 0: /* OK */ break;
430 case -1: PBD::error << _("PortAudioBackend: failed to open device.") << endmsg; break;
431 default: PBD::error << _("PortAudioBackend: initialization failed.") << endmsg; break;
433 if (_pcmio->state ()) {
437 if (_n_outputs != _pcmio->n_playback_channels ()) {
438 _n_outputs = _pcmio->n_playback_channels ();
439 PBD::info << _("PortAudioBackend: adjusted output channel count to match device.") << endmsg;
442 if (_n_inputs != _pcmio->n_capture_channels ()) {
443 _n_inputs = _pcmio->n_capture_channels ();
444 PBD::info << _("PortAudioBackend: adjusted input channel count to match device.") << endmsg;
447 if (_pcmio->samples_per_period() != _samples_per_period) {
448 _samples_per_period = _pcmio->samples_per_period();
449 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
453 if (_pcmio->sample_rate() != _samplerate) {
454 _samplerate = _pcmio->sample_rate();
455 engine.sample_rate_change (_samplerate);
456 PBD::warning << _("PortAudioBackend: sample rate does not match.") << endmsg;
459 _measure_latency = for_latency_measurement;
462 _port_change_flag = false;
464 if (_midi_driver_option == winmme_driver_name) {
465 _midiio->set_enabled(true);
466 //_midiio->set_port_changed_callback(midi_port_change, this);
467 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
470 m_cycle_timer.set_samplerate(_samplerate);
471 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
473 DEBUG_MIDI ("Registering MIDI ports\n");
475 if (register_system_midi_ports () != 0) {
476 PBD::error << _ ("PortAudioBackend: failed to register system midi ports.")
482 DEBUG_AUDIO ("Registering Audio ports\n");
484 if (register_system_audio_ports()) {
485 PBD::error << _("PortAudioBackend: failed to register system audio ports.") << endmsg;
490 engine.sample_rate_change (_samplerate);
491 engine.buffer_size_change (_samples_per_period);
493 if (engine.reestablish_ports ()) {
494 PBD::error << _("PortAudioBackend: Could not re-establish ports.") << endmsg;
499 engine.reconnect_ports ();
501 _port_change_flag = false;
503 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
504 &_main_thread, pthread_process, this))
506 if (pthread_create (&_main_thread, NULL, pthread_process, this))
508 PBD::error << _("PortAudioBackend: failed to create process thread.") << endmsg;
512 PBD::warning << _("PortAudioBackend: cannot acquire realtime permissions.") << endmsg;
517 while (!_active && --timeout > 0) { Glib::usleep (1000); }
519 if (timeout == 0 || !_active) {
520 PBD::error << _("PortAudioBackend: failed to start.") << endmsg;
532 PortAudioBackend::stop ()
540 if (pthread_join (_main_thread, &status)) {
541 PBD::error << _("PortAudioBackend: failed to terminate.") << endmsg;
548 return (_active == false) ? 0 : -1;
552 PortAudioBackend::freewheel (bool onoff)
554 if (onoff == _freewheeling) {
557 _freewheeling = onoff;
562 PortAudioBackend::dsp_load () const
564 return 100.f * _dsp_load;
568 PortAudioBackend::raw_buffer_size (DataType t)
571 case DataType::AUDIO:
572 return _samples_per_period * sizeof(Sample);
574 return _max_buffer_size; // XXX not really limited
581 PortAudioBackend::sample_time ()
583 return _processed_samples;
587 PortAudioBackend::sample_time_at_cycle_start ()
589 return _processed_samples;
593 PortAudioBackend::samples_since_cycle_start ()
595 if (!_active || !_run || _freewheeling || _freewheel) {
598 if (!m_cycle_timer.valid()) {
602 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
606 PortAudioBackend::name_to_id(std::string device_name) const {
607 uint32_t device_id = UINT32_MAX;
608 std::map<int, std::string> devices;
609 _pcmio->input_device_list(devices);
610 _pcmio->output_device_list(devices);
612 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
613 if (i->second == device_name) {
614 device_id = i->first;
622 PortAudioBackend::portaudio_process_thread (void *arg)
624 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
625 boost::function<void ()> f = td->f;
632 PortAudioBackend::create_process_thread (boost::function<void()> func)
636 size_t stacksize = 100000;
638 ThreadData* td = new ThreadData (this, func, stacksize);
640 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
641 &thread_id, portaudio_process_thread, td)) {
642 pthread_attr_init (&attr);
643 pthread_attr_setstacksize (&attr, stacksize);
644 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
645 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
646 pthread_attr_destroy (&attr);
649 pthread_attr_destroy (&attr);
652 _threads.push_back (thread_id);
657 PortAudioBackend::join_process_threads ()
661 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
664 if (pthread_join (*i, &status)) {
665 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
674 PortAudioBackend::in_process_thread ()
676 if (pthread_equal (_main_thread, pthread_self()) != 0) {
680 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
682 if (pthread_equal (*i, pthread_self ()) != 0) {
690 PortAudioBackend::process_thread_count ()
692 return _threads.size ();
696 PortAudioBackend::update_latencies ()
698 // trigger latency callback in RT thread (locked graph)
699 port_connect_add_remove_callback();
705 PortAudioBackend::private_handle () const
711 PortAudioBackend::my_name () const
713 return _instance_name;
717 PortAudioBackend::available () const
719 return _run && _active;
723 PortAudioBackend::port_name_size () const
729 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
731 if (!valid_port (port)) {
732 PBD::error << _("PortAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
735 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
739 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
741 if (!valid_port (port)) {
742 PBD::error << _("PortAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
743 return std::string ();
745 return static_cast<PamPort*>(port)->name ();
748 PortEngine::PortHandle
749 PortAudioBackend::get_port_by_name (const std::string& name) const
751 PortHandle port = (PortHandle) find_port (name);
756 PortAudioBackend::get_ports (
757 const std::string& port_name_pattern,
758 DataType type, PortFlags flags,
759 std::vector<std::string>& port_names) const
763 bool use_regexp = false;
764 if (port_name_pattern.size () > 0) {
765 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
769 for (size_t i = 0; i < _ports.size (); ++i) {
770 PamPort* port = _ports[i];
771 if ((port->type () == type) && flags == (port->flags () & flags)) {
772 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
773 port_names.push_back (port->name ());
779 regfree (&port_regex);
785 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
787 if (!valid_port (port)) {
788 return DataType::NIL;
790 return static_cast<PamPort*>(port)->type ();
793 PortEngine::PortHandle
794 PortAudioBackend::register_port (
795 const std::string& name,
796 ARDOUR::DataType type,
797 ARDOUR::PortFlags flags)
799 if (name.size () == 0) { return 0; }
800 if (flags & IsPhysical) { return 0; }
801 return add_port (_instance_name + ":" + name, type, flags);
804 PortEngine::PortHandle
805 PortAudioBackend::add_port (
806 const std::string& name,
807 ARDOUR::DataType type,
808 ARDOUR::PortFlags flags)
810 assert(name.size ());
811 if (find_port (name)) {
812 PBD::error << _("PortAudioBackend::register_port: Port already exists:")
813 << " (" << name << ")" << endmsg;
816 PamPort* port = NULL;
818 case DataType::AUDIO:
819 port = new PortAudioPort (*this, name, flags);
822 port = new PortMidiPort (*this, name, flags);
825 PBD::error << _("PortAudioBackend::register_port: Invalid Data Type.") << endmsg;
829 _ports.push_back (port);
835 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
840 PamPort* port = static_cast<PamPort*>(port_handle);
841 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
842 if (i == _ports.end ()) {
843 PBD::error << _("PortAudioBackend::unregister_port: Failed to find port") << endmsg;
846 disconnect_all(port_handle);
852 PortAudioBackend::register_system_audio_ports()
856 const uint32_t a_ins = _n_inputs;
857 const uint32_t a_out = _n_outputs;
859 // XXX PA reported stream latencies don't match measurements
860 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
861 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
864 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
865 for (uint32_t i = 0; i < a_ins; ++i) {
867 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
868 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
870 set_latency_range (p, false, lr);
871 _system_inputs.push_back(static_cast<PortAudioPort*>(p));
874 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
875 for (uint32_t i = 0; i < a_out; ++i) {
877 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
878 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
880 set_latency_range (p, true, lr);
881 _system_outputs.push_back(static_cast<PamPort*>(p));
887 PortAudioBackend::register_system_midi_ports()
889 if (_midi_driver_option == _("None")) {
890 DEBUG_MIDI ("No MIDI backend selected, not system midi ports available\n");
895 lr.min = lr.max = _samples_per_period;
897 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
899 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
902 std::string port_name = "system_midi:" + (*i)->name() + " capture";
906 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
908 set_latency_range (p, false, lr);
909 _system_midi_in.push_back (static_cast<PortMidiPort*>(p));
910 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
913 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
915 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
918 std::string port_name = "system_midi:" + (*i)->name() + " playback";
922 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
924 set_latency_range (p, false, lr);
925 static_cast<PortMidiPort*>(p)->set_n_periods(2);
926 _system_midi_out.push_back (static_cast<PortMidiPort*>(p));
927 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
933 PortAudioBackend::unregister_ports (bool system_only)
936 _system_inputs.clear();
937 _system_outputs.clear();
938 _system_midi_in.clear();
939 _system_midi_out.clear();
940 while (i < _ports.size ()) {
941 PamPort* port = _ports[i];
942 if (! system_only || (port->is_physical () && port->is_terminal ())) {
943 port->disconnect_all ();
945 _ports.erase (_ports.begin() + i);
953 PortAudioBackend::connect (const std::string& src, const std::string& dst)
955 PamPort* src_port = find_port (src);
956 PamPort* dst_port = find_port (dst);
959 PBD::error << _("PortAudioBackend::connect: Invalid Source port:")
960 << " (" << src <<")" << endmsg;
964 PBD::error << _("PortAudioBackend::connect: Invalid Destination port:")
965 << " (" << dst <<")" << endmsg;
968 return src_port->connect (dst_port);
972 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
974 PamPort* src_port = find_port (src);
975 PamPort* dst_port = find_port (dst);
977 if (!src_port || !dst_port) {
978 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
981 return src_port->disconnect (dst_port);
985 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
987 PamPort* dst_port = find_port (dst);
988 if (!valid_port (src)) {
989 PBD::error << _("PortAudioBackend::connect: Invalid Source Port Handle") << endmsg;
993 PBD::error << _("PortAudioBackend::connect: Invalid Destination Port")
994 << " (" << dst << ")" << endmsg;
997 return static_cast<PamPort*>(src)->connect (dst_port);
1001 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1003 PamPort* dst_port = find_port (dst);
1004 if (!valid_port (src) || !dst_port) {
1005 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1008 return static_cast<PamPort*>(src)->disconnect (dst_port);
1012 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1014 if (!valid_port (port)) {
1015 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1018 static_cast<PamPort*>(port)->disconnect_all ();
1023 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1025 if (!valid_port (port)) {
1026 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1029 return static_cast<PamPort*>(port)->is_connected ();
1033 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1035 PamPort* dst_port = find_port (dst);
1036 if (!valid_port (src) || !dst_port) {
1037 PBD::error << _("PortAudioBackend::connected_to: Invalid Port") << endmsg;
1040 return static_cast<PamPort*>(src)->is_connected (dst_port);
1044 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1046 if (!valid_port (port)) {
1047 PBD::error << _("PortAudioBackend::physically_connected: Invalid Port") << endmsg;
1050 return static_cast<PamPort*>(port)->is_physically_connected ();
1054 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1056 if (!valid_port (port)) {
1057 PBD::error << _("PortAudioBackend::get_connections: Invalid Port") << endmsg;
1061 assert (0 == names.size ());
1063 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1065 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1066 names.push_back ((*i)->name ());
1069 return (int)names.size ();
1074 PortAudioBackend::midi_event_get (
1075 pframes_t& timestamp,
1076 size_t& size, uint8_t** buf, void* port_buffer,
1077 uint32_t event_index)
1079 if (!buf || !port_buffer) return -1;
1080 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1081 if (event_index >= source.size ()) {
1084 PortMidiEvent * const event = source[event_index].get ();
1086 timestamp = event->timestamp ();
1087 size = event->size ();
1088 *buf = event->data ();
1093 PortAudioBackend::midi_event_put (
1095 pframes_t timestamp,
1096 const uint8_t* buffer, size_t size)
1098 if (!buffer || !port_buffer) return -1;
1099 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1100 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1101 // nevermind, ::get_buffer() sorts events
1102 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1103 (pframes_t)dst.back ()->timestamp (),
1106 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1111 PortAudioBackend::get_midi_event_count (void* port_buffer)
1113 if (!port_buffer) return 0;
1114 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1118 PortAudioBackend::midi_clear (void* port_buffer)
1120 if (!port_buffer) return;
1121 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1129 PortAudioBackend::can_monitor_input () const
1135 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1141 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1147 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1152 /* Latency management */
1155 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1157 if (!valid_port (port)) {
1158 PBD::error << _("PamPort::set_latency_range (): invalid port.") << endmsg;
1160 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1164 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1167 if (!valid_port (port)) {
1168 PBD::error << _("PamPort::get_latency_range (): invalid port.") << endmsg;
1173 PamPort* p = static_cast<PamPort*>(port);
1176 r = p->latency_range (for_playback);
1178 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1179 if (p->is_input() && for_playback) {
1180 r.min += _samples_per_period;
1181 r.max += _samples_per_period;
1183 if (p->is_output() && !for_playback) {
1184 r.min += _samples_per_period;
1185 r.max += _samples_per_period;
1191 /* Discovering physical ports */
1194 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1196 if (!valid_port (port)) {
1197 PBD::error << _("PamPort::port_is_physical (): invalid port.") << endmsg;
1200 return static_cast<PamPort*>(port)->is_physical ();
1204 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1206 for (size_t i = 0; i < _ports.size (); ++i) {
1207 PamPort* port = _ports[i];
1208 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1209 port_names.push_back (port->name ());
1215 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1217 for (size_t i = 0; i < _ports.size (); ++i) {
1218 PamPort* port = _ports[i];
1219 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1220 port_names.push_back (port->name ());
1226 PortAudioBackend::n_physical_outputs () const
1230 for (size_t i = 0; i < _ports.size (); ++i) {
1231 PamPort* port = _ports[i];
1232 if (port->is_output () && port->is_physical ()) {
1233 switch (port->type ()) {
1234 case DataType::AUDIO: ++n_audio; break;
1235 case DataType::MIDI: ++n_midi; break;
1241 cc.set (DataType::AUDIO, n_audio);
1242 cc.set (DataType::MIDI, n_midi);
1247 PortAudioBackend::n_physical_inputs () const
1251 for (size_t i = 0; i < _ports.size (); ++i) {
1252 PamPort* port = _ports[i];
1253 if (port->is_input () && port->is_physical ()) {
1254 switch (port->type ()) {
1255 case DataType::AUDIO: ++n_audio; break;
1256 case DataType::MIDI: ++n_midi; break;
1262 cc.set (DataType::AUDIO, n_audio);
1263 cc.set (DataType::MIDI, n_midi);
1267 /* Getting access to the data buffer for a port */
1270 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1272 if (!port || !valid_port (port)) return NULL;
1273 return static_cast<PamPort*>(port)->get_buffer (nframes);
1278 PortAudioBackend::main_process_thread ()
1280 AudioEngine::thread_init_callback (this);
1282 _processed_samples = 0;
1284 uint64_t clock1, clock2;
1285 int64_t min_elapsed_us = 1000000;
1286 int64_t max_elapsed_us = 0;
1287 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1288 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1290 manager.registration_callback();
1291 manager.graph_order_callback();
1293 if (_pcmio->pcm_start()) {
1294 _pcmio->pcm_stop ();
1296 engine.halted_callback("PortAudio I/O error.");
1301 if (_freewheeling != _freewheel) {
1302 _freewheel = _freewheeling;
1303 engine.freewheel_callback (_freewheel);
1308 switch (_pcmio->next_cycle (_samples_per_period)) {
1312 DEBUG_AUDIO ("PortAudio: Xrun\n");
1316 PBD::error << _("PortAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
1321 clock1 = utils::get_microseconds ();
1325 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1326 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1329 /* de-queue incoming midi*/
1331 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1332 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1335 pframes_t sample_offset;
1337 size_t size = sizeof(data);
1338 while (_midiio->dequeue_input_event (i,
1339 m_cycle_timer.get_start (),
1340 m_cycle_timer.get_next_start (),
1344 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1345 midi_event_put (mbuf, sample_offset, data, size);
1346 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1347 "sample_offset: %2 timestamp: %3, size: %4\n",
1348 _midiio->get_inputs ()[i]->name (),
1352 size = sizeof(data);
1356 /* clear output buffers */
1357 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1358 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1361 m_last_cycle_start = m_cycle_timer.get_start ();
1362 m_cycle_timer.reset_start(utils::get_microseconds());
1365 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1366 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1367 m_total_deviation_us += std::abs(deviation_us);
1368 m_max_deviation_us =
1369 std::max (m_max_deviation_us, (uint64_t)std::abs (deviation_us));
1371 if ((m_cycle_count % 1000) == 0) {
1372 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1374 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1375 mean_deviation_us * 1e-3,
1376 m_max_deviation_us * 1e-3));
1379 if (std::abs(deviation_us) > m_cycle_timer.get_length_us()) {
1380 DEBUG_TIMING (string_compose (
1381 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1382 cycle_diff_us * 1e-3,
1383 m_cycle_timer.get_length_us () * 1e-3,
1384 deviation_us * 1e-3));
1387 /* call engine process callback */
1388 if (engine.process_callback (_samples_per_period)) {
1389 _pcmio->pcm_stop ();
1394 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1395 static_cast<PortMidiPort*>(*it)->next_period();
1397 /* queue outgoing midi */
1399 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1400 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1402 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1403 uint64_t timestamp =
1404 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1406 string_compose ("Queuing outgoing MIDI data for device: "
1407 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1408 _midiio->get_outputs ()[i]->name (),
1409 (*mit)->timestamp (),
1412 _midiio->enqueue_output_event (
1413 i, timestamp, (*mit)->data (), (*mit)->size ());
1417 /* write back audio */
1419 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1420 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1423 _processed_samples += _samples_per_period;
1425 /* calculate DSP load */
1426 clock2 = utils::get_microseconds ();
1427 const int64_t elapsed_time = clock2 - clock1;
1428 _dsp_load = elapsed_time / (float) nomial_time;
1430 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1431 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1432 if ((m_cycle_count % 1000) == 0) {
1434 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1442 // zero audio input buffers
1443 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1444 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1447 clock1 = utils::get_microseconds ();
1449 // TODO clear midi or stop midi recv when entering fwheelin'
1451 if (engine.process_callback (_samples_per_period)) {
1452 _pcmio->pcm_stop ();
1457 // drop all outgoing MIDI messages
1458 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1459 void *bptr = (*it)->get_buffer(0);
1464 Glib::usleep (100); // don't hog cpu
1467 bool connections_changed = false;
1468 bool ports_changed = false;
1469 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1470 if (_port_change_flag) {
1471 ports_changed = true;
1472 _port_change_flag = false;
1474 if (!_port_connection_queue.empty ()) {
1475 connections_changed = true;
1477 while (!_port_connection_queue.empty ()) {
1478 PortConnectData *c = _port_connection_queue.back ();
1479 manager.connect_callback (c->a, c->b, c->c);
1480 _port_connection_queue.pop_back ();
1483 pthread_mutex_unlock (&_port_callback_mutex);
1485 if (ports_changed) {
1486 manager.registration_callback();
1488 if (connections_changed) {
1489 manager.graph_order_callback();
1491 if (connections_changed || ports_changed) {
1492 engine.latency_callback(false);
1493 engine.latency_callback(true);
1497 _pcmio->pcm_stop ();
1500 engine.halted_callback("PortAudio I/O error.");
1506 /******************************************************************************/
1508 static boost::shared_ptr<PortAudioBackend> _instance;
1510 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1511 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1512 static int deinstantiate ();
1513 static bool already_configured ();
1514 static bool available ();
1516 static ARDOUR::AudioBackendInfo _descriptor = {
1525 static boost::shared_ptr<AudioBackend>
1526 backend_factory (AudioEngine& e)
1529 _instance.reset (new PortAudioBackend (e, _descriptor));
1535 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1537 s_instance_name = arg1;
1549 already_configured ()
1560 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1562 return &_descriptor;
1566 /******************************************************************************/
1567 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1572 _capture_latency_range.min = 0;
1573 _capture_latency_range.max = 0;
1574 _playback_latency_range.min = 0;
1575 _playback_latency_range.max = 0;
1578 PamPort::~PamPort () {
1583 int PamPort::connect (PamPort *port)
1586 PBD::error << _("PamPort::connect (): invalid (null) port") << endmsg;
1590 if (type () != port->type ()) {
1591 PBD::error << _("PamPort::connect (): wrong port-type") << endmsg;
1595 if (is_output () && port->is_output ()) {
1596 PBD::error << _("PamPort::connect (): cannot inter-connect output ports.") << endmsg;
1600 if (is_input () && port->is_input ()) {
1601 PBD::error << _("PamPort::connect (): cannot inter-connect input ports.") << endmsg;
1606 PBD::error << _("PamPort::connect (): cannot self-connect ports.") << endmsg;
1610 if (is_connected (port)) {
1611 #if 0 // don't bother to warn about this for now. just ignore it
1612 PBD::error << _("PamPort::connect (): ports are already connected:")
1613 << " (" << name () << ") -> (" << port->name () << ")"
1619 _connect (port, true);
1624 void PamPort::_connect (PamPort *port, bool callback)
1626 _connections.push_back (port);
1628 port->_connect (this, false);
1629 _osx_backend.port_connect_callback (name(), port->name(), true);
1633 int PamPort::disconnect (PamPort *port)
1636 PBD::error << _("PamPort::disconnect (): invalid (null) port") << endmsg;
1640 if (!is_connected (port)) {
1641 PBD::error << _("PamPort::disconnect (): ports are not connected:")
1642 << " (" << name () << ") -> (" << port->name () << ")"
1646 _disconnect (port, true);
1650 void PamPort::_disconnect (PamPort *port, bool callback)
1652 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1654 assert (it != _connections.end ());
1656 _connections.erase (it);
1659 port->_disconnect (this, false);
1660 _osx_backend.port_connect_callback (name(), port->name(), false);
1665 void PamPort::disconnect_all ()
1667 while (!_connections.empty ()) {
1668 _connections.back ()->_disconnect (this, false);
1669 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1670 _connections.pop_back ();
1675 PamPort::is_connected (const PamPort *port) const
1677 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1680 bool PamPort::is_physically_connected () const
1682 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1683 if ((*it)->is_physical ()) {
1690 /******************************************************************************/
1692 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1693 : PamPort (b, name, flags)
1695 memset (_buffer, 0, sizeof (_buffer));
1696 #ifndef PLATFORM_WINDOWS
1697 mlock(_buffer, sizeof (_buffer));
1701 PortAudioPort::~PortAudioPort () { }
1703 void* PortAudioPort::get_buffer (pframes_t n_samples)
1706 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1707 if (it == get_connections ().end ()) {
1708 memset (_buffer, 0, n_samples * sizeof (Sample));
1710 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1711 assert (source && source->is_output ());
1712 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1713 while (++it != get_connections ().end ()) {
1714 source = static_cast<const PortAudioPort*>(*it);
1715 assert (source && source->is_output ());
1716 Sample* dst = buffer ();
1717 const Sample* src = source->const_buffer ();
1718 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1728 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1729 : PamPort (b, name, flags)
1733 _buffer[0].clear ();
1734 _buffer[1].clear ();
1737 PortMidiPort::~PortMidiPort () { }
1739 struct MidiEventSorter {
1740 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1745 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1748 (_buffer[_bufperiod]).clear ();
1749 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1750 i != get_connections ().end ();
1752 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1753 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1754 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1757 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1759 return &(_buffer[_bufperiod]);
1762 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1764 , _timestamp (timestamp)
1768 _data = (uint8_t*) malloc (size);
1769 memcpy (_data, data, size);
1773 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1774 : _size (other.size ())
1775 , _timestamp (other.timestamp ())
1778 if (other.size () && other.const_data ()) {
1779 _data = (uint8_t*) malloc (other.size ());
1780 memcpy (_data, other.const_data (), other.size ());
1784 PortMidiEvent::~PortMidiEvent () {