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"
36 #include "pbd/windows_mmcss.h"
38 #include "ardour/filesystem_paths.h"
39 #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);
86 _pcmio = new PortAudioIO ();
87 _midiio = new WinMMEMidiIO ();
90 PortAudioBackend::~PortAudioBackend ()
92 delete _pcmio; _pcmio = 0;
93 delete _midiio; _midiio = 0;
95 pthread_mutex_destroy (&_port_callback_mutex);
98 /* AUDIOBACKEND API */
101 PortAudioBackend::name () const
103 return X_("PortAudio");
107 PortAudioBackend::is_realtime () const
113 PortAudioBackend::requires_driver_selection() const
115 // we could do this but implementation would need changing
117 if (enumerate_drivers().size() == 1) {
124 std::vector<std::string>
125 PortAudioBackend::enumerate_drivers () const
127 DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
128 std::vector<std::string> currently_available;
129 _pcmio->host_api_list (currently_available);
130 return currently_available;
134 PortAudioBackend::set_driver (const std::string& name)
136 DEBUG_AUDIO (string_compose ("Portaudio: set_driver %1 \n", name));
137 if (!_pcmio->set_host_api (name)) {
138 DEBUG_AUDIO (string_compose ("Portaudio: Unable to set_driver %1 \n", name));
141 _pcmio->update_devices();
146 PortAudioBackend::update_devices ()
148 return _pcmio->update_devices();
152 PortAudioBackend::driver_name () const
154 std::string driver_name = _pcmio->get_host_api ();
155 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
160 PortAudioBackend::use_separate_input_and_output_devices () const
165 std::vector<AudioBackend::DeviceStatus>
166 PortAudioBackend::enumerate_devices () const
168 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
169 return std::vector<AudioBackend::DeviceStatus>();
172 std::vector<AudioBackend::DeviceStatus>
173 PortAudioBackend::enumerate_input_devices () const
175 _input_audio_device_status.clear();
176 std::map<int, std::string> input_devices;
177 _pcmio->input_device_list(input_devices);
179 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
180 if (_input_audio_device == "") _input_audio_device = i->second;
181 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
183 return _input_audio_device_status;
186 std::vector<AudioBackend::DeviceStatus>
187 PortAudioBackend::enumerate_output_devices () const
189 _output_audio_device_status.clear();
190 std::map<int, std::string> output_devices;
191 _pcmio->output_device_list(output_devices);
193 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
194 if (_output_audio_device == "") _output_audio_device = i->second;
195 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
197 return _output_audio_device_status;
201 PortAudioBackend::available_sample_rates (const std::string&) const
203 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
204 std::vector<float> sr;
205 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
209 std::vector<uint32_t>
210 PortAudioBackend::available_buffer_sizes (const std::string&) const
212 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
213 std::vector<uint32_t> bs;
214 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
219 PortAudioBackend::available_input_channel_count (const std::string&) const
221 return 128; // TODO query current device
225 PortAudioBackend::available_output_channel_count (const std::string&) const
227 return 128; // TODO query current device
231 PortAudioBackend::can_change_sample_rate_when_running () const
237 PortAudioBackend::can_change_buffer_size_when_running () const
239 return false; // TODO
243 PortAudioBackend::set_device_name (const std::string& d)
245 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
250 PortAudioBackend::set_input_device_name (const std::string& d)
252 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
253 _input_audio_device = d;
258 PortAudioBackend::set_output_device_name (const std::string& d)
260 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
261 _output_audio_device = d;
266 PortAudioBackend::set_sample_rate (float sr)
268 if (sr <= 0) { return -1; }
269 // TODO check if it's in the list of valid SR
271 engine.sample_rate_change (sr);
276 PortAudioBackend::set_buffer_size (uint32_t bs)
278 if (bs <= 0 || bs >= _max_buffer_size) {
281 _samples_per_period = bs;
282 engine.buffer_size_change (bs);
287 PortAudioBackend::set_interleaved (bool yn)
289 if (!yn) { return 0; }
294 PortAudioBackend::set_input_channels (uint32_t cc)
301 PortAudioBackend::set_output_channels (uint32_t cc)
308 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
310 _systemic_audio_input_latency = sl;
315 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
317 _systemic_audio_output_latency = sl;
321 /* Retrieving parameters */
323 PortAudioBackend::device_name () const
329 PortAudioBackend::input_device_name () const
331 return _input_audio_device;
335 PortAudioBackend::output_device_name () const
337 return _output_audio_device;
341 PortAudioBackend::sample_rate () const
347 PortAudioBackend::buffer_size () const
349 return _samples_per_period;
353 PortAudioBackend::interleaved () const
359 PortAudioBackend::input_channels () const
365 PortAudioBackend::output_channels () const
371 PortAudioBackend::systemic_input_latency () const
373 return _systemic_audio_input_latency;
377 PortAudioBackend::systemic_output_latency () const
379 return _systemic_audio_output_latency;
383 PortAudioBackend::control_app_name () const
385 return _pcmio->control_app_name (name_to_id (_input_audio_device));
389 PortAudioBackend::launch_control_app ()
391 return _pcmio->launch_control_app (name_to_id(_input_audio_device));
396 std::vector<std::string>
397 PortAudioBackend::enumerate_midi_options () const
399 if (_midi_options.empty()) {
400 _midi_options.push_back (winmme_driver_name);
401 _midi_options.push_back (get_standard_device_name(DeviceNone));
403 return _midi_options;
407 PortAudioBackend::set_midi_option (const std::string& opt)
409 if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
412 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
413 _midi_driver_option = opt;
418 PortAudioBackend::midi_option () const
420 return _midi_driver_option;
425 static void * pthread_process (void *arg)
427 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
428 d->main_blocking_process_thread ();
434 PortAudioBackend::engine_halted ()
436 return !_active && _run;
440 PortAudioBackend::running ()
442 return _active || _run;
446 PortAudioBackend::_start (bool for_latency_measurement)
448 if (engine_halted()) {
453 DEBUG_AUDIO("Already started.\n");
459 "Recovering from unclean shutdown, port registry is not empty.\n");
460 _system_inputs.clear();
461 _system_outputs.clear();
462 _system_midi_in.clear();
463 _system_midi_out.clear();
467 /* reset internal state */
469 _freewheeling = false;
472 PaErrorCode err = paNoError;
474 err = _pcmio->open_blocking_stream(name_to_id(_input_audio_device),
475 name_to_id(_output_audio_device),
477 _samples_per_period);
479 // reintepret Portaudio error messages
483 case paBadIODeviceCombination:
484 return DeviceConfigurationNotSupportedError;
485 case paInvalidChannelCount:
486 return ChannelCountNotSupportedError;
487 case paInvalidSampleRate:
488 return SampleRateNotSupportedError;
490 return AudioDeviceOpenError;
493 if (_n_outputs != _pcmio->n_playback_channels ()) {
494 _n_outputs = _pcmio->n_playback_channels ();
495 PBD::info << get_error_string(OutputChannelCountNotSupportedError) << endmsg;
498 if (_n_inputs != _pcmio->n_capture_channels ()) {
499 _n_inputs = _pcmio->n_capture_channels ();
500 PBD::info << get_error_string(InputChannelCountNotSupportedError) << endmsg;
503 if (_pcmio->samples_per_period() != _samples_per_period) {
504 _samples_per_period = _pcmio->samples_per_period();
505 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
509 if (_pcmio->sample_rate() != _samplerate) {
510 _samplerate = _pcmio->sample_rate();
511 engine.sample_rate_change (_samplerate);
512 PBD::warning << get_error_string(SampleRateNotSupportedError) << endmsg;
515 _measure_latency = for_latency_measurement;
518 _port_change_flag = false;
520 if (_midi_driver_option == winmme_driver_name) {
521 _midiio->set_enabled(true);
522 //_midiio->set_port_changed_callback(midi_port_change, this);
523 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
526 m_cycle_timer.set_samplerate(_samplerate);
527 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
529 m_dsp_calc.set_max_time_us (m_cycle_timer.get_length_us());
531 DEBUG_MIDI ("Registering MIDI ports\n");
533 if (register_system_midi_ports () != 0) {
534 DEBUG_PORTS("Failed to register system midi ports.\n")
539 DEBUG_AUDIO ("Registering Audio ports\n");
541 if (register_system_audio_ports()) {
542 DEBUG_PORTS("Failed to register system audio ports.\n");
547 engine.sample_rate_change (_samplerate);
548 engine.buffer_size_change (_samples_per_period);
550 if (engine.reestablish_ports ()) {
551 DEBUG_PORTS("Could not re-establish ports.\n");
556 engine.reconnect_ports ();
558 _port_change_flag = false;
560 if (!start_blocking_process_thread()) {
568 PortAudioBackend::start_blocking_process_thread ()
570 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
571 &_main_blocking_thread, pthread_process, this))
573 if (pthread_create (&_main_blocking_thread, NULL, pthread_process, this))
575 DEBUG_AUDIO("Failed to create main audio thread\n");
579 PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
584 while (!_active && --timeout > 0) { Glib::usleep (1000); }
586 if (timeout == 0 || !_active) {
587 DEBUG_AUDIO("Failed to start main audio thread\n");
588 _pcmio->close_stream();
598 PortAudioBackend::stop_blocking_process_thread ()
602 if (pthread_join (_main_blocking_thread, &status)) {
603 DEBUG_AUDIO("Failed to stop main audio thread\n");
611 PortAudioBackend::stop ()
621 if (!stop_blocking_process_thread ()) {
627 return (_active == false) ? 0 : -1;
631 PortAudioBackend::freewheel (bool onoff)
633 if (onoff == _freewheeling) {
636 _freewheeling = onoff;
641 PortAudioBackend::dsp_load () const
643 return 100.f * _dsp_load;
647 PortAudioBackend::raw_buffer_size (DataType t)
650 case DataType::AUDIO:
651 return _samples_per_period * sizeof(Sample);
653 return _max_buffer_size; // XXX not really limited
660 PortAudioBackend::sample_time ()
662 return _processed_samples;
666 PortAudioBackend::sample_time_at_cycle_start ()
668 return _processed_samples;
672 PortAudioBackend::samples_since_cycle_start ()
674 if (!_active || !_run || _freewheeling || _freewheel) {
677 if (!m_cycle_timer.valid()) {
681 return m_cycle_timer.samples_since_cycle_start (PBD::get_microseconds());
685 PortAudioBackend::name_to_id(std::string device_name) const {
686 uint32_t device_id = UINT32_MAX;
687 std::map<int, std::string> devices;
688 _pcmio->input_device_list(devices);
689 _pcmio->output_device_list(devices);
691 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
692 if (i->second == device_name) {
693 device_id = i->first;
701 PortAudioBackend::set_mmcss_pro_audio (HANDLE* task_handle)
703 bool mmcss_success = PBD::MMCSS::set_thread_characteristics ("Pro Audio", task_handle);
705 if (!mmcss_success) {
706 PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
709 DEBUG_THREADS("Thread characteristics set to Pro Audio\n");
712 bool mmcss_priority =
713 PBD::MMCSS::set_thread_priority(*task_handle, PBD::MMCSS::AVRT_PRIORITY_NORMAL);
715 if (!mmcss_priority) {
716 PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
719 DEBUG_THREADS("Thread priority set to AVRT_PRIORITY_NORMAL\n");
726 PortAudioBackend::reset_mmcss (HANDLE task_handle)
728 if (!PBD::MMCSS::revert_thread_characteristics(task_handle)) {
729 DEBUG_THREADS("Unable to reset process thread characteristics\n");
736 PortAudioBackend::portaudio_process_thread (void *arg)
738 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
739 boost::function<void ()> f = td->f;
742 #ifdef USE_MMCSS_THREAD_PRIORITIES
744 bool mmcss_success = set_mmcss_pro_audio (&task_handle);
747 DWORD tid = GetCurrentThreadId ();
748 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
752 #ifdef USE_MMCSS_THREAD_PRIORITIES
754 reset_mmcss (task_handle);
762 PortAudioBackend::create_process_thread (boost::function<void()> func)
766 size_t stacksize = 100000;
768 ThreadData* td = new ThreadData (this, func, stacksize);
770 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
771 &thread_id, portaudio_process_thread, td)) {
772 pthread_attr_init (&attr);
773 pthread_attr_setstacksize (&attr, stacksize);
774 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
775 DEBUG_AUDIO("Cannot create process thread.");
776 pthread_attr_destroy (&attr);
779 pthread_attr_destroy (&attr);
782 _threads.push_back (thread_id);
787 PortAudioBackend::join_process_threads ()
791 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
794 if (pthread_join (*i, &status)) {
795 DEBUG_AUDIO("Cannot terminate process thread.");
804 PortAudioBackend::in_process_thread ()
806 if (pthread_equal (_main_blocking_thread, pthread_self()) != 0) {
810 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
812 if (pthread_equal (*i, pthread_self ()) != 0) {
820 PortAudioBackend::process_thread_count ()
822 return _threads.size ();
826 PortAudioBackend::update_latencies ()
828 // trigger latency callback in RT thread (locked graph)
829 port_connect_add_remove_callback();
835 PortAudioBackend::private_handle () const
841 PortAudioBackend::my_name () const
843 return _instance_name;
847 PortAudioBackend::available () const
849 return _run && _active;
853 PortAudioBackend::port_name_size () const
859 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
861 if (!valid_port (port)) {
862 DEBUG_PORTS("set_port_name: Invalid Port(s)\n");
865 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
869 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
871 if (!valid_port (port)) {
872 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
873 return std::string ();
875 return static_cast<PamPort*>(port)->name ();
879 PortAudioBackend::get_port_property (PortHandle port,
880 const std::string& key,
882 std::string& type) const
884 if (!valid_port (port)) {
885 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
889 if (key == "http://jackaudio.org/metadata/pretty-name") {
891 value = static_cast<PamPort*>(port)->pretty_name ();
892 if (!value.empty()) {
899 PortEngine::PortHandle
900 PortAudioBackend::get_port_by_name (const std::string& name) const
902 PortHandle port = (PortHandle) find_port (name);
907 PortAudioBackend::get_ports (
908 const std::string& port_name_pattern,
909 DataType type, PortFlags flags,
910 std::vector<std::string>& port_names) const
914 bool use_regexp = false;
915 if (port_name_pattern.size () > 0) {
916 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
920 for (size_t i = 0; i < _ports.size (); ++i) {
921 PamPort* port = _ports[i];
922 if ((port->type () == type) && flags == (port->flags () & flags)) {
923 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
924 port_names.push_back (port->name ());
930 regfree (&port_regex);
936 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
938 if (!valid_port (port)) {
939 return DataType::NIL;
941 return static_cast<PamPort*>(port)->type ();
944 PortEngine::PortHandle
945 PortAudioBackend::register_port (
946 const std::string& name,
947 ARDOUR::DataType type,
948 ARDOUR::PortFlags flags)
950 if (name.size () == 0) { return 0; }
951 if (flags & IsPhysical) { return 0; }
952 return add_port (_instance_name + ":" + name, type, flags);
955 PortEngine::PortHandle
956 PortAudioBackend::add_port (
957 const std::string& name,
958 ARDOUR::DataType type,
959 ARDOUR::PortFlags flags)
961 assert(name.size ());
962 if (find_port (name)) {
964 string_compose("register_port: Port already exists: (%1)\n", name));
967 PamPort* port = NULL;
969 case DataType::AUDIO:
970 port = new PortAudioPort(*this, name, flags);
973 port = new PortMidiPort(*this, name, flags);
976 DEBUG_PORTS("register_port: Invalid Data Type.\n");
980 _ports.push_back (port);
986 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
991 PamPort* port = static_cast<PamPort*>(port_handle);
992 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
993 if (i == _ports.end ()) {
994 DEBUG_PORTS("unregister_port: Failed to find port\n");
997 disconnect_all(port_handle);
1003 PortAudioBackend::register_system_audio_ports()
1007 const uint32_t a_ins = _n_inputs;
1008 const uint32_t a_out = _n_outputs;
1010 // XXX PA reported stream latencies don't match measurements
1011 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
1012 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
1015 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
1016 for (uint32_t i = 0; i < a_ins; ++i) {
1018 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
1019 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1021 set_latency_range (p, false, lr);
1022 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
1023 audio_port->set_pretty_name (
1024 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
1025 _system_inputs.push_back (audio_port);
1028 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
1029 for (uint32_t i = 0; i < a_out; ++i) {
1031 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
1032 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1034 set_latency_range (p, true, lr);
1035 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
1036 audio_port->set_pretty_name (
1037 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
1038 _system_outputs.push_back(audio_port);
1044 PortAudioBackend::register_system_midi_ports()
1046 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
1047 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
1052 lr.min = lr.max = _samples_per_period;
1054 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
1056 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
1059 std::string port_name = "system_midi:" + (*i)->name() + " capture";
1061 add_port (port_name,
1063 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1065 set_latency_range (p, false, lr);
1066 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1067 midi_port->set_pretty_name ((*i)->name());
1068 _system_midi_in.push_back (midi_port);
1069 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
1072 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
1074 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
1075 i != outputs.end ();
1077 std::string port_name = "system_midi:" + (*i)->name() + " playback";
1079 add_port (port_name,
1081 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1083 set_latency_range (p, false, lr);
1084 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1085 midi_port->set_n_periods(2);
1086 midi_port->set_pretty_name ((*i)->name());
1087 _system_midi_out.push_back (midi_port);
1088 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1094 PortAudioBackend::unregister_ports (bool system_only)
1097 _system_inputs.clear();
1098 _system_outputs.clear();
1099 _system_midi_in.clear();
1100 _system_midi_out.clear();
1101 while (i < _ports.size ()) {
1102 PamPort* port = _ports[i];
1103 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1104 port->disconnect_all ();
1106 _ports.erase (_ports.begin() + i);
1114 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1116 PamPort* src_port = find_port (src);
1117 PamPort* dst_port = find_port (dst);
1120 DEBUG_PORTS(string_compose("connect: Invalid Source port: (%1)\n", src));
1124 DEBUG_PORTS(string_compose("connect: Invalid Destination port: (%1)\n", dst));
1127 return src_port->connect (dst_port);
1131 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1133 PamPort* src_port = find_port (src);
1134 PamPort* dst_port = find_port (dst);
1136 if (!src_port || !dst_port) {
1137 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1140 return src_port->disconnect (dst_port);
1144 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1146 PamPort* dst_port = find_port (dst);
1147 if (!valid_port (src)) {
1148 DEBUG_PORTS("connect: Invalid Source Port Handle\n");
1152 DEBUG_PORTS(string_compose("connect: Invalid Destination Port (%1)\n", dst));
1155 return static_cast<PamPort*>(src)->connect (dst_port);
1159 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1161 PamPort* dst_port = find_port (dst);
1162 if (!valid_port (src) || !dst_port) {
1163 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1166 return static_cast<PamPort*>(src)->disconnect (dst_port);
1170 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1172 if (!valid_port (port)) {
1173 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1176 static_cast<PamPort*>(port)->disconnect_all ();
1181 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1183 if (!valid_port (port)) {
1184 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1187 return static_cast<PamPort*>(port)->is_connected ();
1191 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1193 PamPort* dst_port = find_port (dst);
1194 if (!valid_port (src) || !dst_port) {
1195 DEBUG_PORTS("connected_to: Invalid Port\n");
1198 return static_cast<PamPort*>(src)->is_connected (dst_port);
1202 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1204 if (!valid_port (port)) {
1205 DEBUG_PORTS("physically_connected: Invalid Port\n");
1208 return static_cast<PamPort*>(port)->is_physically_connected ();
1212 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1214 if (!valid_port (port)) {
1215 DEBUG_PORTS("get_connections: Invalid Port\n");
1219 assert (0 == names.size ());
1221 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1223 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1224 names.push_back ((*i)->name ());
1227 return (int)names.size ();
1232 PortAudioBackend::midi_event_get (
1233 pframes_t& timestamp,
1234 size_t& size, uint8_t** buf, void* port_buffer,
1235 uint32_t event_index)
1237 if (!buf || !port_buffer) return -1;
1238 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1239 if (event_index >= source.size ()) {
1242 PortMidiEvent * const event = source[event_index].get ();
1244 timestamp = event->timestamp ();
1245 size = event->size ();
1246 *buf = event->data ();
1251 PortAudioBackend::midi_event_put (
1253 pframes_t timestamp,
1254 const uint8_t* buffer, size_t size)
1256 if (!buffer || !port_buffer) return -1;
1257 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1258 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1259 // nevermind, ::get_buffer() sorts events
1260 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1261 (pframes_t)dst.back ()->timestamp (),
1264 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1269 PortAudioBackend::get_midi_event_count (void* port_buffer)
1271 if (!port_buffer) return 0;
1272 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1276 PortAudioBackend::midi_clear (void* port_buffer)
1278 if (!port_buffer) return;
1279 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1287 PortAudioBackend::can_monitor_input () const
1293 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1299 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1305 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1310 /* Latency management */
1313 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1315 if (!valid_port (port)) {
1316 DEBUG_PORTS("PamPort::set_latency_range (): invalid port.\n");
1318 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1322 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1325 if (!valid_port (port)) {
1326 DEBUG_PORTS("PamPort::get_latency_range (): invalid port.\n");
1331 PamPort* p = static_cast<PamPort*>(port);
1334 r = p->latency_range (for_playback);
1336 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1337 if (p->is_input() && for_playback) {
1338 r.min += _samples_per_period;
1339 r.max += _samples_per_period;
1341 if (p->is_output() && !for_playback) {
1342 r.min += _samples_per_period;
1343 r.max += _samples_per_period;
1349 /* Discovering physical ports */
1352 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1354 if (!valid_port (port)) {
1355 DEBUG_PORTS("PamPort::port_is_physical (): invalid port.\n");
1358 return static_cast<PamPort*>(port)->is_physical ();
1362 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1364 for (size_t i = 0; i < _ports.size (); ++i) {
1365 PamPort* port = _ports[i];
1366 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1367 port_names.push_back (port->name ());
1373 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1375 for (size_t i = 0; i < _ports.size (); ++i) {
1376 PamPort* port = _ports[i];
1377 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1378 port_names.push_back (port->name ());
1384 PortAudioBackend::n_physical_outputs () const
1388 for (size_t i = 0; i < _ports.size (); ++i) {
1389 PamPort* port = _ports[i];
1390 if (port->is_output () && port->is_physical ()) {
1391 switch (port->type ()) {
1392 case DataType::AUDIO:
1395 case DataType::MIDI:
1404 cc.set (DataType::AUDIO, n_audio);
1405 cc.set (DataType::MIDI, n_midi);
1410 PortAudioBackend::n_physical_inputs () const
1414 for (size_t i = 0; i < _ports.size (); ++i) {
1415 PamPort* port = _ports[i];
1416 if (port->is_input () && port->is_physical ()) {
1417 switch (port->type ()) {
1418 case DataType::AUDIO:
1421 case DataType::MIDI:
1430 cc.set (DataType::AUDIO, n_audio);
1431 cc.set (DataType::MIDI, n_midi);
1435 /* Getting access to the data buffer for a port */
1438 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1440 if (!port || !valid_port (port)) return NULL;
1441 return static_cast<PamPort*>(port)->get_buffer (nframes);
1446 PortAudioBackend::main_blocking_process_thread ()
1448 AudioEngine::thread_init_callback (this);
1450 _processed_samples = 0;
1452 manager.registration_callback();
1453 manager.graph_order_callback();
1455 if (_pcmio->start_stream() != paNoError) {
1456 _pcmio->close_stream ();
1458 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1461 #ifdef USE_MMCSS_THREAD_PRIORITIES
1463 bool mmcss_success = set_mmcss_pro_audio (&task_handle);
1466 DWORD tid = GetCurrentThreadId ();
1467 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1471 if (_freewheeling != _freewheel) {
1472 _freewheel = _freewheeling;
1473 engine.freewheel_callback (_freewheel);
1478 switch (_pcmio->next_cycle (_samples_per_period)) {
1482 DEBUG_AUDIO("PortAudio: Xrun\n");
1486 PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
1490 if (!blocking_process_main(_pcmio->get_capture_buffer(),
1491 _pcmio->get_playback_buffer())) {
1496 if (!blocking_process_freewheel()) {
1501 process_port_connection_changes();
1503 _pcmio->close_stream();
1506 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1509 #ifdef USE_MMCSS_THREAD_PRIORITIES
1510 if (mmcss_success) {
1511 reset_mmcss(task_handle);
1519 PortAudioBackend::blocking_process_main(const float* interleaved_input_data,
1520 float* interleaved_output_data)
1523 int64_t min_elapsed_us = 1000000;
1524 int64_t max_elapsed_us = 0;
1526 m_dsp_calc.set_start_timestamp_us (PBD::get_microseconds());
1529 /* Copy input audio data into input port buffers */
1530 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1531 it != _system_inputs.end();
1533 assert(_system_inputs.size() == _pcmio->n_capture_channels());
1534 uint32_t channels = _system_inputs.size();
1535 float* input_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
1536 deinterleave_audio_data(
1537 interleaved_input_data, input_port_buffer, _samples_per_period, i, channels);
1540 process_incoming_midi ();
1542 /* clear output buffers */
1543 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1544 it != _system_outputs.end();
1546 memset((*it)->get_buffer(_samples_per_period),
1548 _samples_per_period * sizeof(Sample));
1551 m_last_cycle_start = m_cycle_timer.get_start();
1552 m_cycle_timer.reset_start(PBD::get_microseconds());
1555 uint64_t cycle_diff_us = (m_cycle_timer.get_start() - m_last_cycle_start);
1556 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1557 m_total_deviation_us += ::llabs(deviation_us);
1558 m_max_deviation_us =
1559 std::max(m_max_deviation_us, (uint64_t)::llabs(deviation_us));
1561 if ((m_cycle_count % 1000) == 0) {
1562 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1563 DEBUG_TIMING(string_compose("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1564 mean_deviation_us * 1e-3,
1565 m_max_deviation_us * 1e-3));
1568 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1570 string_compose("time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1571 cycle_diff_us * 1e-3,
1572 m_cycle_timer.get_length_us() * 1e-3,
1573 deviation_us * 1e-3));
1576 /* call engine process callback */
1577 if (engine.process_callback(_samples_per_period)) {
1578 _pcmio->close_stream();
1583 process_outgoing_midi ();
1585 /* write back audio */
1587 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1588 it != _system_outputs.end();
1590 assert(_system_outputs.size() == _pcmio->n_playback_channels());
1591 const uint32_t channels = _system_outputs.size();
1592 float* output_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
1593 interleave_audio_data(
1594 output_port_buffer, interleaved_output_data, _samples_per_period, i, channels);
1597 _processed_samples += _samples_per_period;
1599 /* calculate DSP load */
1600 m_dsp_calc.set_stop_timestamp_us (PBD::get_microseconds());
1601 _dsp_load = m_dsp_calc.get_dsp_load();
1603 DEBUG_TIMING(string_compose("DSP Load: %1\n", _dsp_load));
1605 max_elapsed_us = std::max(m_dsp_calc.elapsed_time_us(), max_elapsed_us);
1606 min_elapsed_us = std::min(m_dsp_calc.elapsed_time_us(), min_elapsed_us);
1607 if ((m_cycle_count % 1000) == 0) {
1608 DEBUG_TIMING(string_compose("Elapsed process time(usecs) max: %1, min: %2\n",
1617 PortAudioBackend::blocking_process_freewheel()
1619 // zero audio input buffers
1620 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1621 it != _system_inputs.end();
1623 memset((*it)->get_buffer(_samples_per_period),
1625 _samples_per_period * sizeof(Sample));
1628 // TODO clear midi or stop midi recv when entering fwheelin'
1630 if (engine.process_callback(_samples_per_period)) {
1631 _pcmio->close_stream();
1636 // drop all outgoing MIDI messages
1637 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1638 it != _system_midi_out.end();
1640 void* bptr = (*it)->get_buffer(0);
1645 Glib::usleep(100); // don't hog cpu
1650 PortAudioBackend::process_incoming_midi ()
1653 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin();
1654 it != _system_midi_in.end();
1656 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1659 pframes_t sample_offset;
1661 size_t size = sizeof(data);
1662 while (_midiio->dequeue_input_event(i,
1663 m_cycle_timer.get_start(),
1664 m_cycle_timer.get_next_start(),
1668 sample_offset = m_cycle_timer.samples_since_cycle_start(timestamp);
1669 midi_event_put(mbuf, sample_offset, data, size);
1670 DEBUG_MIDI(string_compose("Dequeuing incoming MIDI data for device: %1 "
1671 "sample_offset: %2 timestamp: %3, size: %4\n",
1672 _midiio->get_inputs()[i]->name(),
1676 size = sizeof(data);
1682 PortAudioBackend::process_outgoing_midi ()
1685 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin();
1686 it != _system_midi_out.end();
1688 static_cast<PortMidiPort*>(*it)->next_period();
1690 /* queue outgoing midi */
1692 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1693 it != _system_midi_out.end();
1695 const PortMidiBuffer* src =
1696 static_cast<const PortMidiPort*>(*it)->const_buffer();
1698 for (PortMidiBuffer::const_iterator mit = src->begin(); mit != src->end();
1700 uint64_t timestamp =
1701 m_cycle_timer.timestamp_from_sample_offset((*mit)->timestamp());
1702 DEBUG_MIDI(string_compose("Queuing outgoing MIDI data for device: "
1703 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1704 _midiio->get_outputs()[i]->name(),
1705 (*mit)->timestamp(),
1708 _midiio->enqueue_output_event(i, timestamp, (*mit)->data(), (*mit)->size());
1714 PortAudioBackend::process_port_connection_changes ()
1716 bool connections_changed = false;
1717 bool ports_changed = false;
1718 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1719 if (_port_change_flag) {
1720 ports_changed = true;
1721 _port_change_flag = false;
1723 if (!_port_connection_queue.empty ()) {
1724 connections_changed = true;
1726 while (!_port_connection_queue.empty ()) {
1727 PortConnectData *c = _port_connection_queue.back ();
1728 manager.connect_callback (c->a, c->b, c->c);
1729 _port_connection_queue.pop_back ();
1732 pthread_mutex_unlock (&_port_callback_mutex);
1734 if (ports_changed) {
1735 manager.registration_callback();
1737 if (connections_changed) {
1738 manager.graph_order_callback();
1740 if (connections_changed || ports_changed) {
1741 engine.latency_callback(false);
1742 engine.latency_callback(true);
1746 /******************************************************************************/
1748 static boost::shared_ptr<PortAudioBackend> _instance;
1750 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1751 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1752 static int deinstantiate ();
1753 static bool already_configured ();
1754 static bool available ();
1756 static ARDOUR::AudioBackendInfo _descriptor = {
1765 static boost::shared_ptr<AudioBackend>
1766 backend_factory (AudioEngine& e)
1769 _instance.reset (new PortAudioBackend (e, _descriptor));
1775 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1777 s_instance_name = arg1;
1789 already_configured ()
1800 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1802 return &_descriptor;
1806 /******************************************************************************/
1807 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1812 _capture_latency_range.min = 0;
1813 _capture_latency_range.max = 0;
1814 _playback_latency_range.min = 0;
1815 _playback_latency_range.max = 0;
1818 PamPort::~PamPort () {
1823 int PamPort::connect (PamPort *port)
1826 DEBUG_PORTS("PamPort::connect (): invalid (null) port\n");
1830 if (type () != port->type ()) {
1831 DEBUG_PORTS("PamPort::connect (): wrong port-type\n");
1835 if (is_output () && port->is_output ()) {
1836 DEBUG_PORTS("PamPort::connect (): cannot inter-connect output ports.\n");
1840 if (is_input () && port->is_input ()) {
1841 DEBUG_PORTS("PamPort::connect (): cannot inter-connect input ports.\n");
1846 DEBUG_PORTS("PamPort::connect (): cannot self-connect ports.\n");
1850 if (is_connected (port)) {
1851 #if 0 // don't bother to warn about this for now. just ignore it
1852 PBD::error << _("PamPort::connect (): ports are already connected:")
1853 << " (" << name () << ") -> (" << port->name () << ")"
1859 _connect (port, true);
1864 void PamPort::_connect (PamPort *port, bool callback)
1866 _connections.push_back (port);
1868 port->_connect (this, false);
1869 _osx_backend.port_connect_callback (name(), port->name(), true);
1873 int PamPort::disconnect (PamPort *port)
1876 DEBUG_PORTS("PamPort::disconnect (): invalid (null) port\n");
1880 if (!is_connected (port)) {
1881 DEBUG_PORTS(string_compose(
1882 "PamPort::disconnect (): ports are not connected: (%1) -> (%2)\n",
1887 _disconnect (port, true);
1891 void PamPort::_disconnect (PamPort *port, bool callback)
1893 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1895 assert (it != _connections.end ());
1897 _connections.erase (it);
1900 port->_disconnect (this, false);
1901 _osx_backend.port_connect_callback (name(), port->name(), false);
1906 void PamPort::disconnect_all ()
1908 while (!_connections.empty ()) {
1909 _connections.back ()->_disconnect (this, false);
1910 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1911 _connections.pop_back ();
1916 PamPort::is_connected (const PamPort *port) const
1918 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1921 bool PamPort::is_physically_connected () const
1923 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1924 if ((*it)->is_physical ()) {
1931 /******************************************************************************/
1933 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1934 : PamPort (b, name, flags)
1936 memset (_buffer, 0, sizeof (_buffer));
1937 #ifndef PLATFORM_WINDOWS
1938 mlock(_buffer, sizeof (_buffer));
1942 PortAudioPort::~PortAudioPort () { }
1944 void* PortAudioPort::get_buffer (pframes_t n_samples)
1947 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1948 if (it == get_connections ().end ()) {
1949 memset (_buffer, 0, n_samples * sizeof (Sample));
1951 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1952 assert (source && source->is_output ());
1953 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1954 while (++it != get_connections ().end ()) {
1955 source = static_cast<const PortAudioPort*>(*it);
1956 assert (source && source->is_output ());
1957 Sample* dst = buffer ();
1958 const Sample* src = source->const_buffer ();
1959 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1969 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1970 : PamPort (b, name, flags)
1974 _buffer[0].clear ();
1975 _buffer[1].clear ();
1978 PortMidiPort::~PortMidiPort () { }
1980 struct MidiEventSorter {
1981 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1986 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1989 (_buffer[_bufperiod]).clear ();
1990 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1991 i != get_connections ().end ();
1993 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1994 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1995 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1998 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
2000 return &(_buffer[_bufperiod]);
2003 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
2005 , _timestamp (timestamp)
2009 _data = (uint8_t*) malloc (size);
2010 memcpy (_data, data, size);
2014 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
2015 : _size (other.size ())
2016 , _timestamp (other.timestamp ())
2019 if (other.size () && other.const_data ()) {
2020 _data = (uint8_t*) malloc (other.size ());
2021 memcpy (_data, other.const_data (), other.size ());
2025 PortMidiEvent::~PortMidiEvent () {