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 "pbd/windows_timer_utils.h"
37 #include "ardour/filesystem_paths.h"
38 #include "ardour/port_manager.h"
42 #include "audio_utils.h"
46 using namespace ARDOUR;
50 const char * const winmme_driver_name = X_("WinMME");
54 static std::string s_instance_name;
55 size_t PortAudioBackend::_max_buffer_size = 8192;
56 std::vector<std::string> PortAudioBackend::_midi_options;
57 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_input_audio_device_status;
58 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_output_audio_device_status;
60 PortAudioBackend::PortAudioBackend (AudioEngine& e, AudioBackendInfo& info)
61 : AudioBackend (e, info)
66 , _measure_latency (false)
68 , m_total_deviation_us(0)
69 , m_max_deviation_us(0)
70 , _input_audio_device("")
71 , _output_audio_device("")
72 , _midi_driver_option(get_standard_device_name(DeviceNone))
74 , _samples_per_period (1024)
77 , _systemic_audio_input_latency (0)
78 , _systemic_audio_output_latency (0)
80 , _processed_samples (0)
81 , _port_change_flag (false)
83 _instance_name = s_instance_name;
84 pthread_mutex_init (&_port_callback_mutex, 0);
88 _pcmio = new PortAudioIO ();
89 _midiio = new WinMMEMidiIO ();
92 PortAudioBackend::~PortAudioBackend ()
94 delete _pcmio; _pcmio = 0;
95 delete _midiio; _midiio = 0;
97 mmcss::deinitialize ();
99 pthread_mutex_destroy (&_port_callback_mutex);
102 /* AUDIOBACKEND API */
105 PortAudioBackend::name () const
107 return X_("PortAudio");
111 PortAudioBackend::is_realtime () const
117 PortAudioBackend::requires_driver_selection() const
119 // we could do this but implementation would need changing
121 if (enumerate_drivers().size() == 1) {
128 std::vector<std::string>
129 PortAudioBackend::enumerate_drivers () const
131 DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
132 std::vector<std::string> currently_available;
133 _pcmio->host_api_list (currently_available);
134 return currently_available;
138 PortAudioBackend::set_driver (const std::string& name)
140 DEBUG_AUDIO (string_compose ("Portaudio: set_driver %1 \n", name));
141 if (!_pcmio->set_host_api (name)) {
142 DEBUG_AUDIO (string_compose ("Portaudio: Unable to set_driver %1 \n", name));
145 _pcmio->update_devices();
150 PortAudioBackend::update_devices ()
152 return _pcmio->update_devices();
156 PortAudioBackend::driver_name () const
158 std::string driver_name = _pcmio->get_host_api ();
159 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
164 PortAudioBackend::use_separate_input_and_output_devices () const
169 std::vector<AudioBackend::DeviceStatus>
170 PortAudioBackend::enumerate_devices () const
172 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
173 return std::vector<AudioBackend::DeviceStatus>();
176 std::vector<AudioBackend::DeviceStatus>
177 PortAudioBackend::enumerate_input_devices () const
179 _input_audio_device_status.clear();
180 std::map<int, std::string> input_devices;
181 _pcmio->input_device_list(input_devices);
183 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
184 if (_input_audio_device == "") _input_audio_device = i->second;
185 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
187 return _input_audio_device_status;
190 std::vector<AudioBackend::DeviceStatus>
191 PortAudioBackend::enumerate_output_devices () const
193 _output_audio_device_status.clear();
194 std::map<int, std::string> output_devices;
195 _pcmio->output_device_list(output_devices);
197 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
198 if (_output_audio_device == "") _output_audio_device = i->second;
199 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
201 return _output_audio_device_status;
205 PortAudioBackend::available_sample_rates (const std::string&) const
207 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
208 std::vector<float> sr;
209 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
213 std::vector<uint32_t>
214 PortAudioBackend::available_buffer_sizes (const std::string&) const
216 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
217 std::vector<uint32_t> bs;
218 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
223 PortAudioBackend::available_input_channel_count (const std::string&) const
225 return 128; // TODO query current device
229 PortAudioBackend::available_output_channel_count (const std::string&) const
231 return 128; // TODO query current device
235 PortAudioBackend::can_change_sample_rate_when_running () const
241 PortAudioBackend::can_change_buffer_size_when_running () const
243 return false; // TODO
247 PortAudioBackend::set_device_name (const std::string& d)
249 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
254 PortAudioBackend::set_input_device_name (const std::string& d)
256 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
257 _input_audio_device = d;
262 PortAudioBackend::set_output_device_name (const std::string& d)
264 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
265 _output_audio_device = d;
270 PortAudioBackend::set_sample_rate (float sr)
272 if (sr <= 0) { return -1; }
273 // TODO check if it's in the list of valid SR
275 engine.sample_rate_change (sr);
280 PortAudioBackend::set_buffer_size (uint32_t bs)
282 if (bs <= 0 || bs >= _max_buffer_size) {
285 _samples_per_period = bs;
286 engine.buffer_size_change (bs);
291 PortAudioBackend::set_interleaved (bool yn)
293 if (!yn) { return 0; }
298 PortAudioBackend::set_input_channels (uint32_t cc)
305 PortAudioBackend::set_output_channels (uint32_t cc)
312 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
314 _systemic_audio_input_latency = sl;
319 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
321 _systemic_audio_output_latency = sl;
325 /* Retrieving parameters */
327 PortAudioBackend::device_name () const
333 PortAudioBackend::input_device_name () const
335 return _input_audio_device;
339 PortAudioBackend::output_device_name () const
341 return _output_audio_device;
345 PortAudioBackend::sample_rate () const
351 PortAudioBackend::buffer_size () const
353 return _samples_per_period;
357 PortAudioBackend::interleaved () const
363 PortAudioBackend::input_channels () const
369 PortAudioBackend::output_channels () const
375 PortAudioBackend::systemic_input_latency () const
377 return _systemic_audio_input_latency;
381 PortAudioBackend::systemic_output_latency () const
383 return _systemic_audio_output_latency;
387 PortAudioBackend::control_app_name () const
389 return _pcmio->control_app_name (name_to_id (_input_audio_device));
393 PortAudioBackend::launch_control_app ()
395 return _pcmio->launch_control_app (name_to_id(_input_audio_device));
400 std::vector<std::string>
401 PortAudioBackend::enumerate_midi_options () const
403 if (_midi_options.empty()) {
404 _midi_options.push_back (winmme_driver_name);
405 _midi_options.push_back (get_standard_device_name(DeviceNone));
407 return _midi_options;
411 PortAudioBackend::set_midi_option (const std::string& opt)
413 if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
416 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
417 _midi_driver_option = opt;
422 PortAudioBackend::midi_option () const
424 return _midi_driver_option;
429 static void * pthread_process (void *arg)
431 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
432 d->main_blocking_process_thread ();
438 PortAudioBackend::engine_halted ()
440 return !_active && _run;
444 PortAudioBackend::running ()
446 return _active || _run;
450 PortAudioBackend::_start (bool for_latency_measurement)
452 if (engine_halted()) {
457 DEBUG_AUDIO("Already started.\n");
463 "Recovering from unclean shutdown, port registry is not empty.\n");
464 _system_inputs.clear();
465 _system_outputs.clear();
466 _system_midi_in.clear();
467 _system_midi_out.clear();
471 /* reset internal state */
473 _freewheeling = false;
476 PortAudioIO::ErrorCode err;
478 err = _pcmio->open_blocking_stream(name_to_id(_input_audio_device),
479 name_to_id(_output_audio_device),
481 _samples_per_period);
484 case PortAudioIO::NoError:
486 case PortAudioIO::DeviceConfigNotSupportedError:
487 PBD::error << get_error_string(DeviceConfigurationNotSupportedError)
491 PBD::error << get_error_string(AudioDeviceOpenError) << endmsg;
495 if (_n_outputs != _pcmio->n_playback_channels ()) {
496 _n_outputs = _pcmio->n_playback_channels ();
497 PBD::info << get_error_string(OutputChannelCountNotSupportedError) << endmsg;
500 if (_n_inputs != _pcmio->n_capture_channels ()) {
501 _n_inputs = _pcmio->n_capture_channels ();
502 PBD::info << get_error_string(InputChannelCountNotSupportedError) << endmsg;
505 if (_pcmio->samples_per_period() != _samples_per_period) {
506 _samples_per_period = _pcmio->samples_per_period();
507 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
511 if (_pcmio->sample_rate() != _samplerate) {
512 _samplerate = _pcmio->sample_rate();
513 engine.sample_rate_change (_samplerate);
514 PBD::warning << get_error_string(SampleRateNotSupportedError) << endmsg;
517 _measure_latency = for_latency_measurement;
520 _port_change_flag = false;
522 if (_midi_driver_option == winmme_driver_name) {
523 _midiio->set_enabled(true);
524 //_midiio->set_port_changed_callback(midi_port_change, this);
525 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
528 m_cycle_timer.set_samplerate(_samplerate);
529 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
531 m_dsp_calc.set_max_time_us (m_cycle_timer.get_length_us());
533 DEBUG_MIDI ("Registering MIDI ports\n");
535 if (register_system_midi_ports () != 0) {
536 DEBUG_PORTS("Failed to register system midi ports.\n")
541 DEBUG_AUDIO ("Registering Audio ports\n");
543 if (register_system_audio_ports()) {
544 DEBUG_PORTS("Failed to register system audio ports.\n");
549 engine.sample_rate_change (_samplerate);
550 engine.buffer_size_change (_samples_per_period);
552 if (engine.reestablish_ports ()) {
553 DEBUG_PORTS("Could not re-establish ports.\n");
558 engine.reconnect_ports ();
560 _port_change_flag = false;
562 if (!start_blocking_process_thread()) {
570 PortAudioBackend::start_blocking_process_thread ()
572 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
573 &_main_blocking_thread, pthread_process, this))
575 if (pthread_create (&_main_blocking_thread, NULL, pthread_process, this))
577 DEBUG_AUDIO("Failed to create main audio thread\n");
581 PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
586 while (!_active && --timeout > 0) { Glib::usleep (1000); }
588 if (timeout == 0 || !_active) {
589 DEBUG_AUDIO("Failed to start main audio thread\n");
590 _pcmio->close_stream();
600 PortAudioBackend::stop_blocking_process_thread ()
604 if (pthread_join (_main_blocking_thread, &status)) {
605 DEBUG_AUDIO("Failed to stop main audio thread\n");
613 PortAudioBackend::stop ()
623 if (!stop_blocking_process_thread ()) {
629 return (_active == false) ? 0 : -1;
633 PortAudioBackend::freewheel (bool onoff)
635 if (onoff == _freewheeling) {
638 _freewheeling = onoff;
643 PortAudioBackend::dsp_load () const
645 return 100.f * _dsp_load;
649 PortAudioBackend::raw_buffer_size (DataType t)
652 case DataType::AUDIO:
653 return _samples_per_period * sizeof(Sample);
655 return _max_buffer_size; // XXX not really limited
662 PortAudioBackend::sample_time ()
664 return _processed_samples;
668 PortAudioBackend::sample_time_at_cycle_start ()
670 return _processed_samples;
674 PortAudioBackend::samples_since_cycle_start ()
676 if (!_active || !_run || _freewheeling || _freewheel) {
679 if (!m_cycle_timer.valid()) {
683 return m_cycle_timer.samples_since_cycle_start (PBD::get_microseconds());
687 PortAudioBackend::name_to_id(std::string device_name) const {
688 uint32_t device_id = UINT32_MAX;
689 std::map<int, std::string> devices;
690 _pcmio->input_device_list(devices);
691 _pcmio->output_device_list(devices);
693 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
694 if (i->second == device_name) {
695 device_id = i->first;
703 PortAudioBackend::set_mmcss_pro_audio (HANDLE* task_handle)
705 bool mmcss_success = mmcss::set_thread_characteristics ("Pro Audio", task_handle);
707 if (!mmcss_success) {
708 PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
711 DEBUG_THREADS("Thread characteristics set to Pro Audio\n");
714 bool mmcss_priority =
715 mmcss::set_thread_priority(*task_handle, mmcss::AVRT_PRIORITY_NORMAL);
717 if (!mmcss_priority) {
718 PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
721 DEBUG_THREADS("Thread priority set to AVRT_PRIORITY_NORMAL\n");
728 PortAudioBackend::reset_mmcss (HANDLE task_handle)
730 if (!mmcss::revert_thread_characteristics(task_handle)) {
731 DEBUG_THREADS("Unable to reset process thread characteristics\n");
738 PortAudioBackend::portaudio_process_thread (void *arg)
740 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
741 boost::function<void ()> f = td->f;
744 #ifdef USE_MMCSS_THREAD_PRIORITIES
746 bool mmcss_success = set_mmcss_pro_audio (&task_handle);
749 DWORD tid = GetCurrentThreadId ();
750 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
754 #ifdef USE_MMCSS_THREAD_PRIORITIES
756 reset_mmcss (task_handle);
764 PortAudioBackend::create_process_thread (boost::function<void()> func)
768 size_t stacksize = 100000;
770 ThreadData* td = new ThreadData (this, func, stacksize);
772 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
773 &thread_id, portaudio_process_thread, td)) {
774 pthread_attr_init (&attr);
775 pthread_attr_setstacksize (&attr, stacksize);
776 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
777 DEBUG_AUDIO("Cannot create process thread.");
778 pthread_attr_destroy (&attr);
781 pthread_attr_destroy (&attr);
784 _threads.push_back (thread_id);
789 PortAudioBackend::join_process_threads ()
793 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
796 if (pthread_join (*i, &status)) {
797 DEBUG_AUDIO("Cannot terminate process thread.");
806 PortAudioBackend::in_process_thread ()
808 if (pthread_equal (_main_blocking_thread, pthread_self()) != 0) {
812 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
814 if (pthread_equal (*i, pthread_self ()) != 0) {
822 PortAudioBackend::process_thread_count ()
824 return _threads.size ();
828 PortAudioBackend::update_latencies ()
830 // trigger latency callback in RT thread (locked graph)
831 port_connect_add_remove_callback();
837 PortAudioBackend::private_handle () const
843 PortAudioBackend::my_name () const
845 return _instance_name;
849 PortAudioBackend::available () const
851 return _run && _active;
855 PortAudioBackend::port_name_size () const
861 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
863 if (!valid_port (port)) {
864 DEBUG_PORTS("set_port_name: Invalid Port(s)\n");
867 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
871 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
873 if (!valid_port (port)) {
874 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
875 return std::string ();
877 return static_cast<PamPort*>(port)->name ();
881 PortAudioBackend::get_port_property (PortHandle port,
882 const std::string& key,
884 std::string& type) const
886 if (!valid_port (port)) {
887 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
891 if (key == "http://jackaudio.org/metadata/pretty-name") {
893 value = static_cast<PamPort*>(port)->pretty_name ();
894 if (!value.empty()) {
901 PortEngine::PortHandle
902 PortAudioBackend::get_port_by_name (const std::string& name) const
904 PortHandle port = (PortHandle) find_port (name);
909 PortAudioBackend::get_ports (
910 const std::string& port_name_pattern,
911 DataType type, PortFlags flags,
912 std::vector<std::string>& port_names) const
916 bool use_regexp = false;
917 if (port_name_pattern.size () > 0) {
918 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
922 for (size_t i = 0; i < _ports.size (); ++i) {
923 PamPort* port = _ports[i];
924 if ((port->type () == type) && flags == (port->flags () & flags)) {
925 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
926 port_names.push_back (port->name ());
932 regfree (&port_regex);
938 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
940 if (!valid_port (port)) {
941 return DataType::NIL;
943 return static_cast<PamPort*>(port)->type ();
946 PortEngine::PortHandle
947 PortAudioBackend::register_port (
948 const std::string& name,
949 ARDOUR::DataType type,
950 ARDOUR::PortFlags flags)
952 if (name.size () == 0) { return 0; }
953 if (flags & IsPhysical) { return 0; }
954 return add_port (_instance_name + ":" + name, type, flags);
957 PortEngine::PortHandle
958 PortAudioBackend::add_port (
959 const std::string& name,
960 ARDOUR::DataType type,
961 ARDOUR::PortFlags flags)
963 assert(name.size ());
964 if (find_port (name)) {
966 string_compose("register_port: Port already exists: (%1)\n", name));
969 PamPort* port = NULL;
971 case DataType::AUDIO:
972 port = new PortAudioPort(*this, name, flags);
975 port = new PortMidiPort(*this, name, flags);
978 DEBUG_PORTS("register_port: Invalid Data Type.\n");
982 _ports.push_back (port);
988 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
993 PamPort* port = static_cast<PamPort*>(port_handle);
994 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
995 if (i == _ports.end ()) {
996 DEBUG_PORTS("unregister_port: Failed to find port\n");
999 disconnect_all(port_handle);
1005 PortAudioBackend::register_system_audio_ports()
1009 const uint32_t a_ins = _n_inputs;
1010 const uint32_t a_out = _n_outputs;
1012 // XXX PA reported stream latencies don't match measurements
1013 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
1014 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
1017 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
1018 for (uint32_t i = 0; i < a_ins; ++i) {
1020 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
1021 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1023 set_latency_range (p, false, lr);
1024 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
1025 audio_port->set_pretty_name (
1026 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
1027 _system_inputs.push_back (audio_port);
1030 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
1031 for (uint32_t i = 0; i < a_out; ++i) {
1033 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
1034 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1036 set_latency_range (p, true, lr);
1037 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
1038 audio_port->set_pretty_name (
1039 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
1040 _system_outputs.push_back(audio_port);
1046 PortAudioBackend::register_system_midi_ports()
1048 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
1049 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
1054 lr.min = lr.max = _samples_per_period;
1056 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
1058 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
1061 std::string port_name = "system_midi:" + (*i)->name() + " capture";
1063 add_port (port_name,
1065 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1067 set_latency_range (p, false, lr);
1068 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1069 midi_port->set_pretty_name ((*i)->name());
1070 _system_midi_in.push_back (midi_port);
1071 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
1074 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
1076 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
1077 i != outputs.end ();
1079 std::string port_name = "system_midi:" + (*i)->name() + " playback";
1081 add_port (port_name,
1083 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1085 set_latency_range (p, false, lr);
1086 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1087 midi_port->set_n_periods(2);
1088 midi_port->set_pretty_name ((*i)->name());
1089 _system_midi_out.push_back (midi_port);
1090 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1096 PortAudioBackend::unregister_ports (bool system_only)
1099 _system_inputs.clear();
1100 _system_outputs.clear();
1101 _system_midi_in.clear();
1102 _system_midi_out.clear();
1103 while (i < _ports.size ()) {
1104 PamPort* port = _ports[i];
1105 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1106 port->disconnect_all ();
1108 _ports.erase (_ports.begin() + i);
1116 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1118 PamPort* src_port = find_port (src);
1119 PamPort* dst_port = find_port (dst);
1122 DEBUG_PORTS(string_compose("connect: Invalid Source port: (%1)\n", src));
1126 DEBUG_PORTS(string_compose("connect: Invalid Destination port: (%1)\n", dst));
1129 return src_port->connect (dst_port);
1133 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1135 PamPort* src_port = find_port (src);
1136 PamPort* dst_port = find_port (dst);
1138 if (!src_port || !dst_port) {
1139 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1142 return src_port->disconnect (dst_port);
1146 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1148 PamPort* dst_port = find_port (dst);
1149 if (!valid_port (src)) {
1150 DEBUG_PORTS("connect: Invalid Source Port Handle\n");
1154 DEBUG_PORTS(string_compose("connect: Invalid Destination Port (%1)\n", dst));
1157 return static_cast<PamPort*>(src)->connect (dst_port);
1161 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1163 PamPort* dst_port = find_port (dst);
1164 if (!valid_port (src) || !dst_port) {
1165 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1168 return static_cast<PamPort*>(src)->disconnect (dst_port);
1172 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1174 if (!valid_port (port)) {
1175 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1178 static_cast<PamPort*>(port)->disconnect_all ();
1183 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1185 if (!valid_port (port)) {
1186 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1189 return static_cast<PamPort*>(port)->is_connected ();
1193 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1195 PamPort* dst_port = find_port (dst);
1196 if (!valid_port (src) || !dst_port) {
1197 DEBUG_PORTS("connected_to: Invalid Port\n");
1200 return static_cast<PamPort*>(src)->is_connected (dst_port);
1204 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1206 if (!valid_port (port)) {
1207 DEBUG_PORTS("physically_connected: Invalid Port\n");
1210 return static_cast<PamPort*>(port)->is_physically_connected ();
1214 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1216 if (!valid_port (port)) {
1217 DEBUG_PORTS("get_connections: Invalid Port\n");
1221 assert (0 == names.size ());
1223 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1225 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1226 names.push_back ((*i)->name ());
1229 return (int)names.size ();
1234 PortAudioBackend::midi_event_get (
1235 pframes_t& timestamp,
1236 size_t& size, uint8_t** buf, void* port_buffer,
1237 uint32_t event_index)
1239 if (!buf || !port_buffer) return -1;
1240 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1241 if (event_index >= source.size ()) {
1244 PortMidiEvent * const event = source[event_index].get ();
1246 timestamp = event->timestamp ();
1247 size = event->size ();
1248 *buf = event->data ();
1253 PortAudioBackend::midi_event_put (
1255 pframes_t timestamp,
1256 const uint8_t* buffer, size_t size)
1258 if (!buffer || !port_buffer) return -1;
1259 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1260 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1261 // nevermind, ::get_buffer() sorts events
1262 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1263 (pframes_t)dst.back ()->timestamp (),
1266 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1271 PortAudioBackend::get_midi_event_count (void* port_buffer)
1273 if (!port_buffer) return 0;
1274 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1278 PortAudioBackend::midi_clear (void* port_buffer)
1280 if (!port_buffer) return;
1281 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1289 PortAudioBackend::can_monitor_input () const
1295 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1301 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1307 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1312 /* Latency management */
1315 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1317 if (!valid_port (port)) {
1318 DEBUG_PORTS("PamPort::set_latency_range (): invalid port.\n");
1320 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1324 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1327 if (!valid_port (port)) {
1328 DEBUG_PORTS("PamPort::get_latency_range (): invalid port.\n");
1333 PamPort* p = static_cast<PamPort*>(port);
1336 r = p->latency_range (for_playback);
1338 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1339 if (p->is_input() && for_playback) {
1340 r.min += _samples_per_period;
1341 r.max += _samples_per_period;
1343 if (p->is_output() && !for_playback) {
1344 r.min += _samples_per_period;
1345 r.max += _samples_per_period;
1351 /* Discovering physical ports */
1354 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1356 if (!valid_port (port)) {
1357 DEBUG_PORTS("PamPort::port_is_physical (): invalid port.\n");
1360 return static_cast<PamPort*>(port)->is_physical ();
1364 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1366 for (size_t i = 0; i < _ports.size (); ++i) {
1367 PamPort* port = _ports[i];
1368 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1369 port_names.push_back (port->name ());
1375 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1377 for (size_t i = 0; i < _ports.size (); ++i) {
1378 PamPort* port = _ports[i];
1379 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1380 port_names.push_back (port->name ());
1386 PortAudioBackend::n_physical_outputs () const
1390 for (size_t i = 0; i < _ports.size (); ++i) {
1391 PamPort* port = _ports[i];
1392 if (port->is_output () && port->is_physical ()) {
1393 switch (port->type ()) {
1394 case DataType::AUDIO:
1397 case DataType::MIDI:
1406 cc.set (DataType::AUDIO, n_audio);
1407 cc.set (DataType::MIDI, n_midi);
1412 PortAudioBackend::n_physical_inputs () const
1416 for (size_t i = 0; i < _ports.size (); ++i) {
1417 PamPort* port = _ports[i];
1418 if (port->is_input () && port->is_physical ()) {
1419 switch (port->type ()) {
1420 case DataType::AUDIO:
1423 case DataType::MIDI:
1432 cc.set (DataType::AUDIO, n_audio);
1433 cc.set (DataType::MIDI, n_midi);
1437 /* Getting access to the data buffer for a port */
1440 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1442 if (!port || !valid_port (port)) return NULL;
1443 return static_cast<PamPort*>(port)->get_buffer (nframes);
1448 PortAudioBackend::main_blocking_process_thread ()
1450 AudioEngine::thread_init_callback (this);
1452 _processed_samples = 0;
1454 manager.registration_callback();
1455 manager.graph_order_callback();
1457 if (_pcmio->start_stream() != PortAudioIO::NoError) {
1458 _pcmio->close_stream ();
1460 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1463 #ifdef USE_MMCSS_THREAD_PRIORITIES
1465 bool mmcss_success = set_mmcss_pro_audio (&task_handle);
1468 DWORD tid = GetCurrentThreadId ();
1469 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1473 if (_freewheeling != _freewheel) {
1474 _freewheel = _freewheeling;
1475 engine.freewheel_callback (_freewheel);
1480 switch (_pcmio->next_cycle (_samples_per_period)) {
1484 DEBUG_AUDIO("PortAudio: Xrun\n");
1488 PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
1492 if (!blocking_process_main(_pcmio->get_capture_buffer(),
1493 _pcmio->get_playback_buffer())) {
1498 if (!blocking_process_freewheel()) {
1503 process_port_connection_changes();
1505 _pcmio->close_stream();
1508 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1511 #ifdef USE_MMCSS_THREAD_PRIORITIES
1512 if (mmcss_success) {
1513 reset_mmcss(task_handle);
1521 PortAudioBackend::blocking_process_main(const float* interleaved_input_data,
1522 float* interleaved_output_data)
1525 int64_t min_elapsed_us = 1000000;
1526 int64_t max_elapsed_us = 0;
1528 m_dsp_calc.set_start_timestamp_us (PBD::get_microseconds());
1531 /* Copy input audio data into input port buffers */
1532 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1533 it != _system_inputs.end();
1535 assert(_system_inputs.size() == _pcmio->n_capture_channels());
1536 uint32_t channels = _system_inputs.size();
1537 float* input_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
1538 deinterleave_audio_data(
1539 interleaved_input_data, input_port_buffer, _samples_per_period, i, channels);
1542 process_incoming_midi ();
1544 /* clear output buffers */
1545 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1546 it != _system_outputs.end();
1548 memset((*it)->get_buffer(_samples_per_period),
1550 _samples_per_period * sizeof(Sample));
1553 m_last_cycle_start = m_cycle_timer.get_start();
1554 m_cycle_timer.reset_start(PBD::get_microseconds());
1557 uint64_t cycle_diff_us = (m_cycle_timer.get_start() - m_last_cycle_start);
1558 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1559 m_total_deviation_us += ::llabs(deviation_us);
1560 m_max_deviation_us =
1561 std::max(m_max_deviation_us, (uint64_t)::llabs(deviation_us));
1563 if ((m_cycle_count % 1000) == 0) {
1564 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1565 DEBUG_TIMING(string_compose("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1566 mean_deviation_us * 1e-3,
1567 m_max_deviation_us * 1e-3));
1570 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1572 string_compose("time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1573 cycle_diff_us * 1e-3,
1574 m_cycle_timer.get_length_us() * 1e-3,
1575 deviation_us * 1e-3));
1578 /* call engine process callback */
1579 if (engine.process_callback(_samples_per_period)) {
1580 _pcmio->close_stream();
1585 process_outgoing_midi ();
1587 /* write back audio */
1589 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1590 it != _system_outputs.end();
1592 assert(_system_outputs.size() == _pcmio->n_playback_channels());
1593 const uint32_t channels = _system_outputs.size();
1594 float* output_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
1595 interleave_audio_data(
1596 output_port_buffer, interleaved_output_data, _samples_per_period, i, channels);
1599 _processed_samples += _samples_per_period;
1601 /* calculate DSP load */
1602 m_dsp_calc.set_stop_timestamp_us (PBD::get_microseconds());
1603 _dsp_load = m_dsp_calc.get_dsp_load();
1605 DEBUG_TIMING(string_compose("DSP Load: %1\n", _dsp_load));
1607 max_elapsed_us = std::max(m_dsp_calc.elapsed_time_us(), max_elapsed_us);
1608 min_elapsed_us = std::min(m_dsp_calc.elapsed_time_us(), min_elapsed_us);
1609 if ((m_cycle_count % 1000) == 0) {
1610 DEBUG_TIMING(string_compose("Elapsed process time(usecs) max: %1, min: %2\n",
1619 PortAudioBackend::blocking_process_freewheel()
1621 // zero audio input buffers
1622 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1623 it != _system_inputs.end();
1625 memset((*it)->get_buffer(_samples_per_period),
1627 _samples_per_period * sizeof(Sample));
1630 // TODO clear midi or stop midi recv when entering fwheelin'
1632 if (engine.process_callback(_samples_per_period)) {
1633 _pcmio->close_stream();
1638 // drop all outgoing MIDI messages
1639 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1640 it != _system_midi_out.end();
1642 void* bptr = (*it)->get_buffer(0);
1647 Glib::usleep(100); // don't hog cpu
1652 PortAudioBackend::process_incoming_midi ()
1655 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin();
1656 it != _system_midi_in.end();
1658 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1661 pframes_t sample_offset;
1663 size_t size = sizeof(data);
1664 while (_midiio->dequeue_input_event(i,
1665 m_cycle_timer.get_start(),
1666 m_cycle_timer.get_next_start(),
1670 sample_offset = m_cycle_timer.samples_since_cycle_start(timestamp);
1671 midi_event_put(mbuf, sample_offset, data, size);
1672 DEBUG_MIDI(string_compose("Dequeuing incoming MIDI data for device: %1 "
1673 "sample_offset: %2 timestamp: %3, size: %4\n",
1674 _midiio->get_inputs()[i]->name(),
1678 size = sizeof(data);
1684 PortAudioBackend::process_outgoing_midi ()
1687 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin();
1688 it != _system_midi_out.end();
1690 static_cast<PortMidiPort*>(*it)->next_period();
1692 /* queue outgoing midi */
1694 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1695 it != _system_midi_out.end();
1697 const PortMidiBuffer* src =
1698 static_cast<const PortMidiPort*>(*it)->const_buffer();
1700 for (PortMidiBuffer::const_iterator mit = src->begin(); mit != src->end();
1702 uint64_t timestamp =
1703 m_cycle_timer.timestamp_from_sample_offset((*mit)->timestamp());
1704 DEBUG_MIDI(string_compose("Queuing outgoing MIDI data for device: "
1705 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1706 _midiio->get_outputs()[i]->name(),
1707 (*mit)->timestamp(),
1710 _midiio->enqueue_output_event(i, timestamp, (*mit)->data(), (*mit)->size());
1716 PortAudioBackend::process_port_connection_changes ()
1718 bool connections_changed = false;
1719 bool ports_changed = false;
1720 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1721 if (_port_change_flag) {
1722 ports_changed = true;
1723 _port_change_flag = false;
1725 if (!_port_connection_queue.empty ()) {
1726 connections_changed = true;
1728 while (!_port_connection_queue.empty ()) {
1729 PortConnectData *c = _port_connection_queue.back ();
1730 manager.connect_callback (c->a, c->b, c->c);
1731 _port_connection_queue.pop_back ();
1734 pthread_mutex_unlock (&_port_callback_mutex);
1736 if (ports_changed) {
1737 manager.registration_callback();
1739 if (connections_changed) {
1740 manager.graph_order_callback();
1742 if (connections_changed || ports_changed) {
1743 engine.latency_callback(false);
1744 engine.latency_callback(true);
1748 /******************************************************************************/
1750 static boost::shared_ptr<PortAudioBackend> _instance;
1752 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1753 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1754 static int deinstantiate ();
1755 static bool already_configured ();
1756 static bool available ();
1758 static ARDOUR::AudioBackendInfo _descriptor = {
1767 static boost::shared_ptr<AudioBackend>
1768 backend_factory (AudioEngine& e)
1771 _instance.reset (new PortAudioBackend (e, _descriptor));
1777 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1779 s_instance_name = arg1;
1791 already_configured ()
1802 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1804 return &_descriptor;
1808 /******************************************************************************/
1809 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1814 _capture_latency_range.min = 0;
1815 _capture_latency_range.max = 0;
1816 _playback_latency_range.min = 0;
1817 _playback_latency_range.max = 0;
1820 PamPort::~PamPort () {
1825 int PamPort::connect (PamPort *port)
1828 DEBUG_PORTS("PamPort::connect (): invalid (null) port\n");
1832 if (type () != port->type ()) {
1833 DEBUG_PORTS("PamPort::connect (): wrong port-type\n");
1837 if (is_output () && port->is_output ()) {
1838 DEBUG_PORTS("PamPort::connect (): cannot inter-connect output ports.\n");
1842 if (is_input () && port->is_input ()) {
1843 DEBUG_PORTS("PamPort::connect (): cannot inter-connect input ports.\n");
1848 DEBUG_PORTS("PamPort::connect (): cannot self-connect ports.\n");
1852 if (is_connected (port)) {
1853 #if 0 // don't bother to warn about this for now. just ignore it
1854 PBD::error << _("PamPort::connect (): ports are already connected:")
1855 << " (" << name () << ") -> (" << port->name () << ")"
1861 _connect (port, true);
1866 void PamPort::_connect (PamPort *port, bool callback)
1868 _connections.push_back (port);
1870 port->_connect (this, false);
1871 _osx_backend.port_connect_callback (name(), port->name(), true);
1875 int PamPort::disconnect (PamPort *port)
1878 DEBUG_PORTS("PamPort::disconnect (): invalid (null) port\n");
1882 if (!is_connected (port)) {
1883 DEBUG_PORTS(string_compose(
1884 "PamPort::disconnect (): ports are not connected: (%1) -> (%2)\n",
1889 _disconnect (port, true);
1893 void PamPort::_disconnect (PamPort *port, bool callback)
1895 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1897 assert (it != _connections.end ());
1899 _connections.erase (it);
1902 port->_disconnect (this, false);
1903 _osx_backend.port_connect_callback (name(), port->name(), false);
1908 void PamPort::disconnect_all ()
1910 while (!_connections.empty ()) {
1911 _connections.back ()->_disconnect (this, false);
1912 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1913 _connections.pop_back ();
1918 PamPort::is_connected (const PamPort *port) const
1920 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1923 bool PamPort::is_physically_connected () const
1925 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1926 if ((*it)->is_physical ()) {
1933 /******************************************************************************/
1935 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1936 : PamPort (b, name, flags)
1938 memset (_buffer, 0, sizeof (_buffer));
1939 #ifndef PLATFORM_WINDOWS
1940 mlock(_buffer, sizeof (_buffer));
1944 PortAudioPort::~PortAudioPort () { }
1946 void* PortAudioPort::get_buffer (pframes_t n_samples)
1949 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1950 if (it == get_connections ().end ()) {
1951 memset (_buffer, 0, n_samples * sizeof (Sample));
1953 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1954 assert (source && source->is_output ());
1955 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1956 while (++it != get_connections ().end ()) {
1957 source = static_cast<const PortAudioPort*>(*it);
1958 assert (source && source->is_output ());
1959 Sample* dst = buffer ();
1960 const Sample* src = source->const_buffer ();
1961 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1971 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1972 : PamPort (b, name, flags)
1976 _buffer[0].clear ();
1977 _buffer[1].clear ();
1980 PortMidiPort::~PortMidiPort () { }
1982 struct MidiEventSorter {
1983 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1988 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1991 (_buffer[_bufperiod]).clear ();
1992 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1993 i != get_connections ().end ();
1995 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1996 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1997 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
2000 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
2002 return &(_buffer[_bufperiod]);
2005 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
2007 , _timestamp (timestamp)
2011 _data = (uint8_t*) malloc (size);
2012 memcpy (_data, data, size);
2016 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
2017 : _size (other.size ())
2018 , _timestamp (other.timestamp ())
2021 if (other.size () && other.const_data ()) {
2022 _data = (uint8_t*) malloc (other.size ());
2023 memcpy (_data, other.const_data (), other.size ());
2027 PortMidiEvent::~PortMidiEvent () {