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"
36 #include "ardour/filesystem_paths.h"
37 #include "ardour/port_manager.h"
40 #include "win_utils.h"
45 using namespace ARDOUR;
49 const char * const winmme_driver_name = X_("WinMME");
53 static std::string s_instance_name;
54 size_t PortAudioBackend::_max_buffer_size = 8192;
55 std::vector<std::string> PortAudioBackend::_midi_options;
56 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_input_audio_device_status;
57 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_output_audio_device_status;
59 PortAudioBackend::PortAudioBackend (AudioEngine& e, AudioBackendInfo& info)
60 : AudioBackend (e, info)
65 , _measure_latency (false)
67 , m_total_deviation_us(0)
68 , m_max_deviation_us(0)
69 , _input_audio_device("")
70 , _output_audio_device("")
71 , _midi_driver_option(get_standard_device_name(DeviceNone))
73 , _samples_per_period (1024)
76 , _systemic_audio_input_latency (0)
77 , _systemic_audio_output_latency (0)
79 , _processed_samples (0)
80 , _port_change_flag (false)
82 _instance_name = s_instance_name;
83 pthread_mutex_init (&_port_callback_mutex, 0);
87 _pcmio = new PortAudioIO ();
88 _midiio = new WinMMEMidiIO ();
91 PortAudioBackend::~PortAudioBackend ()
93 delete _pcmio; _pcmio = 0;
94 delete _midiio; _midiio = 0;
96 mmcss::deinitialize ();
98 pthread_mutex_destroy (&_port_callback_mutex);
101 /* AUDIOBACKEND API */
104 PortAudioBackend::name () const
106 return X_("PortAudio");
110 PortAudioBackend::is_realtime () const
116 PortAudioBackend::requires_driver_selection() const
118 // we could do this but implementation would need changing
120 if (enumerate_drivers().size() == 1) {
127 std::vector<std::string>
128 PortAudioBackend::enumerate_drivers () const
130 DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
131 std::vector<std::string> currently_available;
132 _pcmio->host_api_list (currently_available);
133 return currently_available;
137 PortAudioBackend::set_driver (const std::string& name)
139 DEBUG_AUDIO (string_compose ("Portaudio: set_driver %1 \n", name));
140 if (!_pcmio->set_host_api (name)) {
141 DEBUG_AUDIO (string_compose ("Portaudio: Unable to set_driver %1 \n", name));
148 PortAudioBackend::driver_name () const
150 std::string driver_name = _pcmio->get_host_api ();
151 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
156 PortAudioBackend::use_separate_input_and_output_devices () const
161 std::vector<AudioBackend::DeviceStatus>
162 PortAudioBackend::enumerate_devices () const
164 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
165 return std::vector<AudioBackend::DeviceStatus>();
168 std::vector<AudioBackend::DeviceStatus>
169 PortAudioBackend::enumerate_input_devices () const
172 _input_audio_device_status.clear();
173 std::map<int, std::string> input_devices;
174 _pcmio->input_device_list(input_devices);
176 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
177 if (_input_audio_device == "") _input_audio_device = i->second;
178 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
180 return _input_audio_device_status;
183 std::vector<AudioBackend::DeviceStatus>
184 PortAudioBackend::enumerate_output_devices () const
187 _output_audio_device_status.clear();
188 std::map<int, std::string> output_devices;
189 _pcmio->output_device_list(output_devices);
191 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
192 if (_output_audio_device == "") _output_audio_device = i->second;
193 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
195 return _output_audio_device_status;
199 PortAudioBackend::available_sample_rates (const std::string&) const
201 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
202 std::vector<float> sr;
203 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
207 std::vector<uint32_t>
208 PortAudioBackend::available_buffer_sizes (const std::string&) const
210 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
211 std::vector<uint32_t> bs;
212 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
217 PortAudioBackend::available_input_channel_count (const std::string&) const
219 return 128; // TODO query current device
223 PortAudioBackend::available_output_channel_count (const std::string&) const
225 return 128; // TODO query current device
229 PortAudioBackend::can_change_sample_rate_when_running () const
235 PortAudioBackend::can_change_buffer_size_when_running () const
237 return false; // TODO
241 PortAudioBackend::set_device_name (const std::string& d)
243 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
248 PortAudioBackend::set_input_device_name (const std::string& d)
250 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
251 _input_audio_device = d;
256 PortAudioBackend::set_output_device_name (const std::string& d)
258 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
259 _output_audio_device = d;
264 PortAudioBackend::set_sample_rate (float sr)
266 if (sr <= 0) { return -1; }
267 // TODO check if it's in the list of valid SR
269 engine.sample_rate_change (sr);
274 PortAudioBackend::set_buffer_size (uint32_t bs)
276 if (bs <= 0 || bs >= _max_buffer_size) {
279 _samples_per_period = bs;
280 engine.buffer_size_change (bs);
285 PortAudioBackend::set_interleaved (bool yn)
287 if (!yn) { return 0; }
292 PortAudioBackend::set_input_channels (uint32_t cc)
299 PortAudioBackend::set_output_channels (uint32_t cc)
306 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
308 _systemic_audio_input_latency = sl;
313 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
315 _systemic_audio_output_latency = sl;
319 /* Retrieving parameters */
321 PortAudioBackend::device_name () const
327 PortAudioBackend::input_device_name () const
329 return _input_audio_device;
333 PortAudioBackend::output_device_name () const
335 return _output_audio_device;
339 PortAudioBackend::sample_rate () const
345 PortAudioBackend::buffer_size () const
347 return _samples_per_period;
351 PortAudioBackend::interleaved () const
357 PortAudioBackend::input_channels () const
363 PortAudioBackend::output_channels () const
369 PortAudioBackend::systemic_input_latency () const
371 return _systemic_audio_input_latency;
375 PortAudioBackend::systemic_output_latency () const
377 return _systemic_audio_output_latency;
381 PortAudioBackend::control_app_name () const
383 return _pcmio->control_app_name (name_to_id (_input_audio_device));
387 PortAudioBackend::launch_control_app ()
389 return _pcmio->launch_control_app (name_to_id(_input_audio_device));
394 std::vector<std::string>
395 PortAudioBackend::enumerate_midi_options () const
397 if (_midi_options.empty()) {
398 _midi_options.push_back (winmme_driver_name);
399 _midi_options.push_back (get_standard_device_name(DeviceNone));
401 return _midi_options;
405 PortAudioBackend::set_midi_option (const std::string& opt)
407 if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
410 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
411 _midi_driver_option = opt;
416 PortAudioBackend::midi_option () const
418 return _midi_driver_option;
423 static void * pthread_process (void *arg)
425 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
426 d->main_process_thread ();
432 PortAudioBackend::_start (bool for_latency_measurement)
434 if (!_active && _run) {
435 // recover from 'halted', reap threads
439 if (_active || _run) {
440 PBD::error << _("PortAudioBackend: already active.") << endmsg;
445 PBD::warning << _("PortAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
446 _system_inputs.clear();
447 _system_outputs.clear();
448 _system_midi_in.clear();
449 _system_midi_out.clear();
453 /* reset internal state */
455 _freewheeling = false;
458 _pcmio->pcm_setup (name_to_id(_input_audio_device), name_to_id(_output_audio_device), _samplerate, _samples_per_period);
460 switch (_pcmio->state ()) {
461 case 0: /* OK */ break;
462 case -1: PBD::error << _("PortAudioBackend: failed to open device.") << endmsg; break;
463 default: PBD::error << _("PortAudioBackend: initialization failed.") << endmsg; break;
465 if (_pcmio->state ()) {
469 if (_n_outputs != _pcmio->n_playback_channels ()) {
470 _n_outputs = _pcmio->n_playback_channels ();
471 PBD::info << _("PortAudioBackend: adjusted output channel count to match device.") << endmsg;
474 if (_n_inputs != _pcmio->n_capture_channels ()) {
475 _n_inputs = _pcmio->n_capture_channels ();
476 PBD::info << _("PortAudioBackend: adjusted input channel count to match device.") << endmsg;
479 if (_pcmio->samples_per_period() != _samples_per_period) {
480 _samples_per_period = _pcmio->samples_per_period();
481 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
485 if (_pcmio->sample_rate() != _samplerate) {
486 _samplerate = _pcmio->sample_rate();
487 engine.sample_rate_change (_samplerate);
488 PBD::warning << _("PortAudioBackend: sample rate does not match.") << endmsg;
491 _measure_latency = for_latency_measurement;
494 _port_change_flag = false;
496 if (_midi_driver_option == winmme_driver_name) {
497 _midiio->set_enabled(true);
498 //_midiio->set_port_changed_callback(midi_port_change, this);
499 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
502 m_cycle_timer.set_samplerate(_samplerate);
503 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
505 DEBUG_MIDI ("Registering MIDI ports\n");
507 if (register_system_midi_ports () != 0) {
508 PBD::error << _ ("PortAudioBackend: failed to register system midi ports.")
514 DEBUG_AUDIO ("Registering Audio ports\n");
516 if (register_system_audio_ports()) {
517 PBD::error << _("PortAudioBackend: failed to register system audio ports.") << endmsg;
522 engine.sample_rate_change (_samplerate);
523 engine.buffer_size_change (_samples_per_period);
525 if (engine.reestablish_ports ()) {
526 PBD::error << _("PortAudioBackend: Could not re-establish ports.") << endmsg;
531 engine.reconnect_ports ();
533 _port_change_flag = false;
535 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
536 &_main_thread, pthread_process, this))
538 if (pthread_create (&_main_thread, NULL, pthread_process, this))
540 PBD::error << _("PortAudioBackend: failed to create process thread.") << endmsg;
544 PBD::warning << _("PortAudioBackend: cannot acquire realtime permissions.") << endmsg;
549 while (!_active && --timeout > 0) { Glib::usleep (1000); }
551 if (timeout == 0 || !_active) {
552 PBD::error << _("PortAudioBackend: failed to start.") << endmsg;
564 PortAudioBackend::stop ()
572 if (pthread_join (_main_thread, &status)) {
573 PBD::error << _("PortAudioBackend: failed to terminate.") << endmsg;
580 return (_active == false) ? 0 : -1;
584 PortAudioBackend::freewheel (bool onoff)
586 if (onoff == _freewheeling) {
589 _freewheeling = onoff;
594 PortAudioBackend::dsp_load () const
596 return 100.f * _dsp_load;
600 PortAudioBackend::raw_buffer_size (DataType t)
603 case DataType::AUDIO:
604 return _samples_per_period * sizeof(Sample);
606 return _max_buffer_size; // XXX not really limited
613 PortAudioBackend::sample_time ()
615 return _processed_samples;
619 PortAudioBackend::sample_time_at_cycle_start ()
621 return _processed_samples;
625 PortAudioBackend::samples_since_cycle_start ()
627 if (!_active || !_run || _freewheeling || _freewheel) {
630 if (!m_cycle_timer.valid()) {
634 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
638 PortAudioBackend::name_to_id(std::string device_name) const {
639 uint32_t device_id = UINT32_MAX;
640 std::map<int, std::string> devices;
641 _pcmio->input_device_list(devices);
642 _pcmio->output_device_list(devices);
644 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
645 if (i->second == device_name) {
646 device_id = i->first;
654 PortAudioBackend::portaudio_process_thread (void *arg)
656 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
657 boost::function<void ()> f = td->f;
660 #ifdef USE_MMCSS_THREAD_PRIORITIES
663 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
664 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
665 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
670 DWORD tid = GetCurrentThreadId ();
671 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
675 #ifdef USE_MMCSS_THREAD_PRIORITIES
676 mmcss::revert_thread_characteristics (task_handle);
683 PortAudioBackend::create_process_thread (boost::function<void()> func)
687 size_t stacksize = 100000;
689 ThreadData* td = new ThreadData (this, func, stacksize);
691 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
692 &thread_id, portaudio_process_thread, td)) {
693 pthread_attr_init (&attr);
694 pthread_attr_setstacksize (&attr, stacksize);
695 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
696 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
697 pthread_attr_destroy (&attr);
700 pthread_attr_destroy (&attr);
703 _threads.push_back (thread_id);
708 PortAudioBackend::join_process_threads ()
712 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
715 if (pthread_join (*i, &status)) {
716 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
725 PortAudioBackend::in_process_thread ()
727 if (pthread_equal (_main_thread, pthread_self()) != 0) {
731 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
733 if (pthread_equal (*i, pthread_self ()) != 0) {
741 PortAudioBackend::process_thread_count ()
743 return _threads.size ();
747 PortAudioBackend::update_latencies ()
749 // trigger latency callback in RT thread (locked graph)
750 port_connect_add_remove_callback();
756 PortAudioBackend::private_handle () const
762 PortAudioBackend::my_name () const
764 return _instance_name;
768 PortAudioBackend::available () const
770 return _run && _active;
774 PortAudioBackend::port_name_size () const
780 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
782 if (!valid_port (port)) {
783 PBD::error << _("PortAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
786 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
790 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
792 if (!valid_port (port)) {
793 PBD::error << _("PortAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
794 return std::string ();
796 return static_cast<PamPort*>(port)->name ();
800 PortAudioBackend::get_port_property (PortHandle port,
801 const std::string& key,
803 std::string& type) const
805 if (!valid_port (port)) {
806 PBD::error << _ ("PortAudioBackend::get_port_name: Invalid Port(s)")
811 if (key == "http://jackaudio.org/metadata/pretty-name") {
813 value = static_cast<PamPort*>(port)->pretty_name ();
814 if (!value.empty()) {
821 PortEngine::PortHandle
822 PortAudioBackend::get_port_by_name (const std::string& name) const
824 PortHandle port = (PortHandle) find_port (name);
829 PortAudioBackend::get_ports (
830 const std::string& port_name_pattern,
831 DataType type, PortFlags flags,
832 std::vector<std::string>& port_names) const
836 bool use_regexp = false;
837 if (port_name_pattern.size () > 0) {
838 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
842 for (size_t i = 0; i < _ports.size (); ++i) {
843 PamPort* port = _ports[i];
844 if ((port->type () == type) && flags == (port->flags () & flags)) {
845 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
846 port_names.push_back (port->name ());
852 regfree (&port_regex);
858 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
860 if (!valid_port (port)) {
861 return DataType::NIL;
863 return static_cast<PamPort*>(port)->type ();
866 PortEngine::PortHandle
867 PortAudioBackend::register_port (
868 const std::string& name,
869 ARDOUR::DataType type,
870 ARDOUR::PortFlags flags)
872 if (name.size () == 0) { return 0; }
873 if (flags & IsPhysical) { return 0; }
874 return add_port (_instance_name + ":" + name, type, flags);
877 PortEngine::PortHandle
878 PortAudioBackend::add_port (
879 const std::string& name,
880 ARDOUR::DataType type,
881 ARDOUR::PortFlags flags)
883 assert(name.size ());
884 if (find_port (name)) {
885 PBD::error << _("PortAudioBackend::register_port: Port already exists:")
886 << " (" << name << ")" << endmsg;
889 PamPort* port = NULL;
891 case DataType::AUDIO:
892 port = new PortAudioPort (*this, name, flags);
895 port = new PortMidiPort (*this, name, flags);
898 PBD::error << _("PortAudioBackend::register_port: Invalid Data Type.") << endmsg;
902 _ports.push_back (port);
908 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
913 PamPort* port = static_cast<PamPort*>(port_handle);
914 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
915 if (i == _ports.end ()) {
916 PBD::error << _("PortAudioBackend::unregister_port: Failed to find port") << endmsg;
919 disconnect_all(port_handle);
925 PortAudioBackend::register_system_audio_ports()
929 const uint32_t a_ins = _n_inputs;
930 const uint32_t a_out = _n_outputs;
932 // XXX PA reported stream latencies don't match measurements
933 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
934 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
937 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
938 for (uint32_t i = 0; i < a_ins; ++i) {
940 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
941 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
943 set_latency_range (p, false, lr);
944 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
945 audio_port->set_pretty_name (
946 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
947 _system_inputs.push_back (audio_port);
950 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
951 for (uint32_t i = 0; i < a_out; ++i) {
953 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
954 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
956 set_latency_range (p, true, lr);
957 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
958 audio_port->set_pretty_name (
959 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
960 _system_outputs.push_back(audio_port);
966 PortAudioBackend::register_system_midi_ports()
968 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
969 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
974 lr.min = lr.max = _samples_per_period;
976 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
978 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
981 std::string port_name = "system_midi:" + (*i)->name() + " capture";
985 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
987 set_latency_range (p, false, lr);
988 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
989 midi_port->set_pretty_name ((*i)->name());
990 _system_midi_in.push_back (midi_port);
991 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
994 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
996 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
999 std::string port_name = "system_midi:" + (*i)->name() + " playback";
1001 add_port (port_name,
1003 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1005 set_latency_range (p, false, lr);
1006 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1007 midi_port->set_n_periods(2);
1008 midi_port->set_pretty_name ((*i)->name());
1009 _system_midi_out.push_back (midi_port);
1010 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1016 PortAudioBackend::unregister_ports (bool system_only)
1019 _system_inputs.clear();
1020 _system_outputs.clear();
1021 _system_midi_in.clear();
1022 _system_midi_out.clear();
1023 while (i < _ports.size ()) {
1024 PamPort* port = _ports[i];
1025 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1026 port->disconnect_all ();
1028 _ports.erase (_ports.begin() + i);
1036 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1038 PamPort* src_port = find_port (src);
1039 PamPort* dst_port = find_port (dst);
1042 PBD::error << _("PortAudioBackend::connect: Invalid Source port:")
1043 << " (" << src <<")" << endmsg;
1047 PBD::error << _("PortAudioBackend::connect: Invalid Destination port:")
1048 << " (" << dst <<")" << endmsg;
1051 return src_port->connect (dst_port);
1055 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1057 PamPort* src_port = find_port (src);
1058 PamPort* dst_port = find_port (dst);
1060 if (!src_port || !dst_port) {
1061 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1064 return src_port->disconnect (dst_port);
1068 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1070 PamPort* dst_port = find_port (dst);
1071 if (!valid_port (src)) {
1072 PBD::error << _("PortAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1076 PBD::error << _("PortAudioBackend::connect: Invalid Destination Port")
1077 << " (" << dst << ")" << endmsg;
1080 return static_cast<PamPort*>(src)->connect (dst_port);
1084 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1086 PamPort* dst_port = find_port (dst);
1087 if (!valid_port (src) || !dst_port) {
1088 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1091 return static_cast<PamPort*>(src)->disconnect (dst_port);
1095 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1097 if (!valid_port (port)) {
1098 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1101 static_cast<PamPort*>(port)->disconnect_all ();
1106 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1108 if (!valid_port (port)) {
1109 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1112 return static_cast<PamPort*>(port)->is_connected ();
1116 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1118 PamPort* dst_port = find_port (dst);
1119 if (!valid_port (src) || !dst_port) {
1120 PBD::error << _("PortAudioBackend::connected_to: Invalid Port") << endmsg;
1123 return static_cast<PamPort*>(src)->is_connected (dst_port);
1127 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1129 if (!valid_port (port)) {
1130 PBD::error << _("PortAudioBackend::physically_connected: Invalid Port") << endmsg;
1133 return static_cast<PamPort*>(port)->is_physically_connected ();
1137 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1139 if (!valid_port (port)) {
1140 PBD::error << _("PortAudioBackend::get_connections: Invalid Port") << endmsg;
1144 assert (0 == names.size ());
1146 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1148 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1149 names.push_back ((*i)->name ());
1152 return (int)names.size ();
1157 PortAudioBackend::midi_event_get (
1158 pframes_t& timestamp,
1159 size_t& size, uint8_t** buf, void* port_buffer,
1160 uint32_t event_index)
1162 if (!buf || !port_buffer) return -1;
1163 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1164 if (event_index >= source.size ()) {
1167 PortMidiEvent * const event = source[event_index].get ();
1169 timestamp = event->timestamp ();
1170 size = event->size ();
1171 *buf = event->data ();
1176 PortAudioBackend::midi_event_put (
1178 pframes_t timestamp,
1179 const uint8_t* buffer, size_t size)
1181 if (!buffer || !port_buffer) return -1;
1182 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1183 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1184 // nevermind, ::get_buffer() sorts events
1185 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1186 (pframes_t)dst.back ()->timestamp (),
1189 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1194 PortAudioBackend::get_midi_event_count (void* port_buffer)
1196 if (!port_buffer) return 0;
1197 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1201 PortAudioBackend::midi_clear (void* port_buffer)
1203 if (!port_buffer) return;
1204 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1212 PortAudioBackend::can_monitor_input () const
1218 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1224 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1230 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1235 /* Latency management */
1238 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1240 if (!valid_port (port)) {
1241 PBD::error << _("PamPort::set_latency_range (): invalid port.") << endmsg;
1243 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1247 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1250 if (!valid_port (port)) {
1251 PBD::error << _("PamPort::get_latency_range (): invalid port.") << endmsg;
1256 PamPort* p = static_cast<PamPort*>(port);
1259 r = p->latency_range (for_playback);
1261 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1262 if (p->is_input() && for_playback) {
1263 r.min += _samples_per_period;
1264 r.max += _samples_per_period;
1266 if (p->is_output() && !for_playback) {
1267 r.min += _samples_per_period;
1268 r.max += _samples_per_period;
1274 /* Discovering physical ports */
1277 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1279 if (!valid_port (port)) {
1280 PBD::error << _("PamPort::port_is_physical (): invalid port.") << endmsg;
1283 return static_cast<PamPort*>(port)->is_physical ();
1287 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1289 for (size_t i = 0; i < _ports.size (); ++i) {
1290 PamPort* port = _ports[i];
1291 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1292 port_names.push_back (port->name ());
1298 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1300 for (size_t i = 0; i < _ports.size (); ++i) {
1301 PamPort* port = _ports[i];
1302 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1303 port_names.push_back (port->name ());
1309 PortAudioBackend::n_physical_outputs () const
1313 for (size_t i = 0; i < _ports.size (); ++i) {
1314 PamPort* port = _ports[i];
1315 if (port->is_output () && port->is_physical ()) {
1316 switch (port->type ()) {
1317 case DataType::AUDIO: ++n_audio; break;
1318 case DataType::MIDI: ++n_midi; break;
1324 cc.set (DataType::AUDIO, n_audio);
1325 cc.set (DataType::MIDI, n_midi);
1330 PortAudioBackend::n_physical_inputs () const
1334 for (size_t i = 0; i < _ports.size (); ++i) {
1335 PamPort* port = _ports[i];
1336 if (port->is_input () && port->is_physical ()) {
1337 switch (port->type ()) {
1338 case DataType::AUDIO: ++n_audio; break;
1339 case DataType::MIDI: ++n_midi; break;
1345 cc.set (DataType::AUDIO, n_audio);
1346 cc.set (DataType::MIDI, n_midi);
1350 /* Getting access to the data buffer for a port */
1353 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1355 if (!port || !valid_port (port)) return NULL;
1356 return static_cast<PamPort*>(port)->get_buffer (nframes);
1361 PortAudioBackend::main_process_thread ()
1363 AudioEngine::thread_init_callback (this);
1365 _processed_samples = 0;
1367 uint64_t clock1, clock2;
1368 int64_t min_elapsed_us = 1000000;
1369 int64_t max_elapsed_us = 0;
1370 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1371 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1373 manager.registration_callback();
1374 manager.graph_order_callback();
1376 if (_pcmio->pcm_start()) {
1377 _pcmio->pcm_stop ();
1379 engine.halted_callback("PortAudio I/O error.");
1382 #ifdef USE_MMCSS_THREAD_PRIORITIES
1385 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
1386 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
1387 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
1392 DWORD tid = GetCurrentThreadId ();
1393 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1397 if (_freewheeling != _freewheel) {
1398 _freewheel = _freewheeling;
1399 engine.freewheel_callback (_freewheel);
1404 switch (_pcmio->next_cycle (_samples_per_period)) {
1408 DEBUG_AUDIO ("PortAudio: Xrun\n");
1412 PBD::error << _("PortAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
1417 clock1 = utils::get_microseconds ();
1421 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1422 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1425 /* de-queue incoming midi*/
1427 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1428 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1431 pframes_t sample_offset;
1433 size_t size = sizeof(data);
1434 while (_midiio->dequeue_input_event (i,
1435 m_cycle_timer.get_start (),
1436 m_cycle_timer.get_next_start (),
1440 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1441 midi_event_put (mbuf, sample_offset, data, size);
1442 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1443 "sample_offset: %2 timestamp: %3, size: %4\n",
1444 _midiio->get_inputs ()[i]->name (),
1448 size = sizeof(data);
1452 /* clear output buffers */
1453 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1454 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1457 m_last_cycle_start = m_cycle_timer.get_start ();
1458 m_cycle_timer.reset_start(utils::get_microseconds());
1461 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1462 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1463 m_total_deviation_us += ::llabs(deviation_us);
1464 m_max_deviation_us =
1465 std::max (m_max_deviation_us, (uint64_t)::llabs (deviation_us));
1467 if ((m_cycle_count % 1000) == 0) {
1468 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1470 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1471 mean_deviation_us * 1e-3,
1472 m_max_deviation_us * 1e-3));
1475 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1476 DEBUG_TIMING (string_compose (
1477 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1478 cycle_diff_us * 1e-3,
1479 m_cycle_timer.get_length_us () * 1e-3,
1480 deviation_us * 1e-3));
1483 /* call engine process callback */
1484 if (engine.process_callback (_samples_per_period)) {
1485 _pcmio->pcm_stop ();
1490 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1491 static_cast<PortMidiPort*>(*it)->next_period();
1493 /* queue outgoing midi */
1495 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1496 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1498 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1499 uint64_t timestamp =
1500 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1502 string_compose ("Queuing outgoing MIDI data for device: "
1503 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1504 _midiio->get_outputs ()[i]->name (),
1505 (*mit)->timestamp (),
1508 _midiio->enqueue_output_event (
1509 i, timestamp, (*mit)->data (), (*mit)->size ());
1513 /* write back audio */
1515 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1516 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1519 _processed_samples += _samples_per_period;
1521 /* calculate DSP load */
1522 clock2 = utils::get_microseconds ();
1523 const int64_t elapsed_time = clock2 - clock1;
1524 _dsp_load = elapsed_time / (float) nomial_time;
1526 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1527 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1528 if ((m_cycle_count % 1000) == 0) {
1530 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1538 // zero audio input buffers
1539 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1540 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1543 clock1 = utils::get_microseconds ();
1545 // TODO clear midi or stop midi recv when entering fwheelin'
1547 if (engine.process_callback (_samples_per_period)) {
1548 _pcmio->pcm_stop ();
1553 // drop all outgoing MIDI messages
1554 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1555 void *bptr = (*it)->get_buffer(0);
1560 Glib::usleep (100); // don't hog cpu
1563 bool connections_changed = false;
1564 bool ports_changed = false;
1565 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1566 if (_port_change_flag) {
1567 ports_changed = true;
1568 _port_change_flag = false;
1570 if (!_port_connection_queue.empty ()) {
1571 connections_changed = true;
1573 while (!_port_connection_queue.empty ()) {
1574 PortConnectData *c = _port_connection_queue.back ();
1575 manager.connect_callback (c->a, c->b, c->c);
1576 _port_connection_queue.pop_back ();
1579 pthread_mutex_unlock (&_port_callback_mutex);
1581 if (ports_changed) {
1582 manager.registration_callback();
1584 if (connections_changed) {
1585 manager.graph_order_callback();
1587 if (connections_changed || ports_changed) {
1588 engine.latency_callback(false);
1589 engine.latency_callback(true);
1593 _pcmio->pcm_stop ();
1596 engine.halted_callback("PortAudio I/O error.");
1599 #ifdef USE_MMCSS_THREAD_PRIORITIES
1600 mmcss::revert_thread_characteristics (task_handle);
1607 /******************************************************************************/
1609 static boost::shared_ptr<PortAudioBackend> _instance;
1611 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1612 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1613 static int deinstantiate ();
1614 static bool already_configured ();
1615 static bool available ();
1617 static ARDOUR::AudioBackendInfo _descriptor = {
1626 static boost::shared_ptr<AudioBackend>
1627 backend_factory (AudioEngine& e)
1630 _instance.reset (new PortAudioBackend (e, _descriptor));
1636 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1638 s_instance_name = arg1;
1650 already_configured ()
1661 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1663 return &_descriptor;
1667 /******************************************************************************/
1668 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1673 _capture_latency_range.min = 0;
1674 _capture_latency_range.max = 0;
1675 _playback_latency_range.min = 0;
1676 _playback_latency_range.max = 0;
1679 PamPort::~PamPort () {
1684 int PamPort::connect (PamPort *port)
1687 PBD::error << _("PamPort::connect (): invalid (null) port") << endmsg;
1691 if (type () != port->type ()) {
1692 PBD::error << _("PamPort::connect (): wrong port-type") << endmsg;
1696 if (is_output () && port->is_output ()) {
1697 PBD::error << _("PamPort::connect (): cannot inter-connect output ports.") << endmsg;
1701 if (is_input () && port->is_input ()) {
1702 PBD::error << _("PamPort::connect (): cannot inter-connect input ports.") << endmsg;
1707 PBD::error << _("PamPort::connect (): cannot self-connect ports.") << endmsg;
1711 if (is_connected (port)) {
1712 #if 0 // don't bother to warn about this for now. just ignore it
1713 PBD::error << _("PamPort::connect (): ports are already connected:")
1714 << " (" << name () << ") -> (" << port->name () << ")"
1720 _connect (port, true);
1725 void PamPort::_connect (PamPort *port, bool callback)
1727 _connections.push_back (port);
1729 port->_connect (this, false);
1730 _osx_backend.port_connect_callback (name(), port->name(), true);
1734 int PamPort::disconnect (PamPort *port)
1737 PBD::error << _("PamPort::disconnect (): invalid (null) port") << endmsg;
1741 if (!is_connected (port)) {
1742 PBD::error << _("PamPort::disconnect (): ports are not connected:")
1743 << " (" << name () << ") -> (" << port->name () << ")"
1747 _disconnect (port, true);
1751 void PamPort::_disconnect (PamPort *port, bool callback)
1753 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1755 assert (it != _connections.end ());
1757 _connections.erase (it);
1760 port->_disconnect (this, false);
1761 _osx_backend.port_connect_callback (name(), port->name(), false);
1766 void PamPort::disconnect_all ()
1768 while (!_connections.empty ()) {
1769 _connections.back ()->_disconnect (this, false);
1770 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1771 _connections.pop_back ();
1776 PamPort::is_connected (const PamPort *port) const
1778 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1781 bool PamPort::is_physically_connected () const
1783 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1784 if ((*it)->is_physical ()) {
1791 /******************************************************************************/
1793 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1794 : PamPort (b, name, flags)
1796 memset (_buffer, 0, sizeof (_buffer));
1797 #ifndef PLATFORM_WINDOWS
1798 mlock(_buffer, sizeof (_buffer));
1802 PortAudioPort::~PortAudioPort () { }
1804 void* PortAudioPort::get_buffer (pframes_t n_samples)
1807 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1808 if (it == get_connections ().end ()) {
1809 memset (_buffer, 0, n_samples * sizeof (Sample));
1811 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1812 assert (source && source->is_output ());
1813 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1814 while (++it != get_connections ().end ()) {
1815 source = static_cast<const PortAudioPort*>(*it);
1816 assert (source && source->is_output ());
1817 Sample* dst = buffer ();
1818 const Sample* src = source->const_buffer ();
1819 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1829 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1830 : PamPort (b, name, flags)
1834 _buffer[0].clear ();
1835 _buffer[1].clear ();
1838 PortMidiPort::~PortMidiPort () { }
1840 struct MidiEventSorter {
1841 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1846 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1849 (_buffer[_bufperiod]).clear ();
1850 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1851 i != get_connections ().end ();
1853 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1854 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1855 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1858 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1860 return &(_buffer[_bufperiod]);
1863 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1865 , _timestamp (timestamp)
1869 _data = (uint8_t*) malloc (size);
1870 memcpy (_data, data, size);
1874 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1875 : _size (other.size ())
1876 , _timestamp (other.timestamp ())
1879 if (other.size () && other.const_data ()) {
1880 _data = (uint8_t*) malloc (other.size ());
1881 memcpy (_data, other.const_data (), other.size ());
1885 PortMidiEvent::~PortMidiEvent () {