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));
144 _pcmio->update_devices();
149 PortAudioBackend::update_devices ()
151 return _pcmio->update_devices();
155 PortAudioBackend::driver_name () const
157 std::string driver_name = _pcmio->get_host_api ();
158 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
163 PortAudioBackend::use_separate_input_and_output_devices () const
168 std::vector<AudioBackend::DeviceStatus>
169 PortAudioBackend::enumerate_devices () const
171 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
172 return std::vector<AudioBackend::DeviceStatus>();
175 std::vector<AudioBackend::DeviceStatus>
176 PortAudioBackend::enumerate_input_devices () const
178 _input_audio_device_status.clear();
179 std::map<int, std::string> input_devices;
180 _pcmio->input_device_list(input_devices);
182 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
183 if (_input_audio_device == "") _input_audio_device = i->second;
184 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
186 return _input_audio_device_status;
189 std::vector<AudioBackend::DeviceStatus>
190 PortAudioBackend::enumerate_output_devices () const
192 _output_audio_device_status.clear();
193 std::map<int, std::string> output_devices;
194 _pcmio->output_device_list(output_devices);
196 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
197 if (_output_audio_device == "") _output_audio_device = i->second;
198 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
200 return _output_audio_device_status;
204 PortAudioBackend::available_sample_rates (const std::string&) const
206 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
207 std::vector<float> sr;
208 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
212 std::vector<uint32_t>
213 PortAudioBackend::available_buffer_sizes (const std::string&) const
215 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
216 std::vector<uint32_t> bs;
217 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
222 PortAudioBackend::available_input_channel_count (const std::string&) const
224 return 128; // TODO query current device
228 PortAudioBackend::available_output_channel_count (const std::string&) const
230 return 128; // TODO query current device
234 PortAudioBackend::can_change_sample_rate_when_running () const
240 PortAudioBackend::can_change_buffer_size_when_running () const
242 return false; // TODO
246 PortAudioBackend::set_device_name (const std::string& d)
248 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
253 PortAudioBackend::set_input_device_name (const std::string& d)
255 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
256 _input_audio_device = d;
261 PortAudioBackend::set_output_device_name (const std::string& d)
263 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
264 _output_audio_device = d;
269 PortAudioBackend::set_sample_rate (float sr)
271 if (sr <= 0) { return -1; }
272 // TODO check if it's in the list of valid SR
274 engine.sample_rate_change (sr);
279 PortAudioBackend::set_buffer_size (uint32_t bs)
281 if (bs <= 0 || bs >= _max_buffer_size) {
284 _samples_per_period = bs;
285 engine.buffer_size_change (bs);
290 PortAudioBackend::set_interleaved (bool yn)
292 if (!yn) { return 0; }
297 PortAudioBackend::set_input_channels (uint32_t cc)
304 PortAudioBackend::set_output_channels (uint32_t cc)
311 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
313 _systemic_audio_input_latency = sl;
318 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
320 _systemic_audio_output_latency = sl;
324 /* Retrieving parameters */
326 PortAudioBackend::device_name () const
332 PortAudioBackend::input_device_name () const
334 return _input_audio_device;
338 PortAudioBackend::output_device_name () const
340 return _output_audio_device;
344 PortAudioBackend::sample_rate () const
350 PortAudioBackend::buffer_size () const
352 return _samples_per_period;
356 PortAudioBackend::interleaved () const
362 PortAudioBackend::input_channels () const
368 PortAudioBackend::output_channels () const
374 PortAudioBackend::systemic_input_latency () const
376 return _systemic_audio_input_latency;
380 PortAudioBackend::systemic_output_latency () const
382 return _systemic_audio_output_latency;
386 PortAudioBackend::control_app_name () const
388 return _pcmio->control_app_name (name_to_id (_input_audio_device));
392 PortAudioBackend::launch_control_app ()
394 return _pcmio->launch_control_app (name_to_id(_input_audio_device));
399 std::vector<std::string>
400 PortAudioBackend::enumerate_midi_options () const
402 if (_midi_options.empty()) {
403 _midi_options.push_back (winmme_driver_name);
404 _midi_options.push_back (get_standard_device_name(DeviceNone));
406 return _midi_options;
410 PortAudioBackend::set_midi_option (const std::string& opt)
412 if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
415 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
416 _midi_driver_option = opt;
421 PortAudioBackend::midi_option () const
423 return _midi_driver_option;
428 static void * pthread_process (void *arg)
430 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
431 d->main_blocking_process_thread ();
437 PortAudioBackend::_start (bool for_latency_measurement)
439 if (!_active && _run) {
440 // recover from 'halted', reap threads
444 if (_active || _run) {
445 DEBUG_AUDIO("Already active.\n");
451 "Recovering from unclean shutdown, port registry is not empty.\n");
452 _system_inputs.clear();
453 _system_outputs.clear();
454 _system_midi_in.clear();
455 _system_midi_out.clear();
459 /* reset internal state */
461 _freewheeling = false;
464 PortAudioIO::ErrorCode err;
466 err = _pcmio->open_blocking_stream(name_to_id(_input_audio_device),
467 name_to_id(_output_audio_device),
469 _samples_per_period);
472 case PortAudioIO::NoError:
474 case PortAudioIO::DeviceConfigNotSupportedError:
475 PBD::error << get_error_string(DeviceConfigurationNotSupportedError)
479 PBD::error << get_error_string(AudioDeviceOpenError) << endmsg;
483 if (_n_outputs != _pcmio->n_playback_channels ()) {
484 _n_outputs = _pcmio->n_playback_channels ();
485 PBD::info << get_error_string(OutputChannelCountNotSupportedError) << endmsg;
488 if (_n_inputs != _pcmio->n_capture_channels ()) {
489 _n_inputs = _pcmio->n_capture_channels ();
490 PBD::info << get_error_string(InputChannelCountNotSupportedError) << endmsg;
493 if (_pcmio->samples_per_period() != _samples_per_period) {
494 _samples_per_period = _pcmio->samples_per_period();
495 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
499 if (_pcmio->sample_rate() != _samplerate) {
500 _samplerate = _pcmio->sample_rate();
501 engine.sample_rate_change (_samplerate);
502 PBD::warning << get_error_string(SampleRateNotSupportedError) << endmsg;
505 _measure_latency = for_latency_measurement;
508 _port_change_flag = false;
510 if (_midi_driver_option == winmme_driver_name) {
511 _midiio->set_enabled(true);
512 //_midiio->set_port_changed_callback(midi_port_change, this);
513 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
516 m_cycle_timer.set_samplerate(_samplerate);
517 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
519 DEBUG_MIDI ("Registering MIDI ports\n");
521 if (register_system_midi_ports () != 0) {
522 DEBUG_PORTS("Failed to register system midi ports.\n")
527 DEBUG_AUDIO ("Registering Audio ports\n");
529 if (register_system_audio_ports()) {
530 DEBUG_PORTS("Failed to register system audio ports.\n");
535 engine.sample_rate_change (_samplerate);
536 engine.buffer_size_change (_samples_per_period);
538 if (engine.reestablish_ports ()) {
539 DEBUG_PORTS("Could not re-establish ports.\n");
544 engine.reconnect_ports ();
546 _port_change_flag = false;
548 if (!start_blocking_process_thread()) {
556 PortAudioBackend::start_blocking_process_thread ()
558 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
559 &_main_blocking_thread, pthread_process, this))
561 if (pthread_create (&_main_blocking_thread, NULL, pthread_process, this))
563 DEBUG_AUDIO("Failed to create main audio thread\n");
567 PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
572 while (!_active && --timeout > 0) { Glib::usleep (1000); }
574 if (timeout == 0 || !_active) {
575 DEBUG_AUDIO("Failed to start main audio thread\n");
576 _pcmio->close_stream();
586 PortAudioBackend::stop_blocking_process_thread ()
590 if (pthread_join (_main_blocking_thread, &status)) {
591 DEBUG_AUDIO("Failed to stop main audio thread\n");
599 PortAudioBackend::stop ()
609 if (!stop_blocking_process_thread ()) {
615 return (_active == false) ? 0 : -1;
619 PortAudioBackend::freewheel (bool onoff)
621 if (onoff == _freewheeling) {
624 _freewheeling = onoff;
629 PortAudioBackend::dsp_load () const
631 return 100.f * _dsp_load;
635 PortAudioBackend::raw_buffer_size (DataType t)
638 case DataType::AUDIO:
639 return _samples_per_period * sizeof(Sample);
641 return _max_buffer_size; // XXX not really limited
648 PortAudioBackend::sample_time ()
650 return _processed_samples;
654 PortAudioBackend::sample_time_at_cycle_start ()
656 return _processed_samples;
660 PortAudioBackend::samples_since_cycle_start ()
662 if (!_active || !_run || _freewheeling || _freewheel) {
665 if (!m_cycle_timer.valid()) {
669 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
673 PortAudioBackend::name_to_id(std::string device_name) const {
674 uint32_t device_id = UINT32_MAX;
675 std::map<int, std::string> devices;
676 _pcmio->input_device_list(devices);
677 _pcmio->output_device_list(devices);
679 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
680 if (i->second == device_name) {
681 device_id = i->first;
689 PortAudioBackend::portaudio_process_thread (void *arg)
691 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
692 boost::function<void ()> f = td->f;
695 #ifdef USE_MMCSS_THREAD_PRIORITIES
698 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
699 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
700 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
705 DWORD tid = GetCurrentThreadId ();
706 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
710 #ifdef USE_MMCSS_THREAD_PRIORITIES
711 mmcss::revert_thread_characteristics (task_handle);
718 PortAudioBackend::create_process_thread (boost::function<void()> func)
722 size_t stacksize = 100000;
724 ThreadData* td = new ThreadData (this, func, stacksize);
726 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
727 &thread_id, portaudio_process_thread, td)) {
728 pthread_attr_init (&attr);
729 pthread_attr_setstacksize (&attr, stacksize);
730 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
731 DEBUG_AUDIO("Cannot create process thread.");
732 pthread_attr_destroy (&attr);
735 pthread_attr_destroy (&attr);
738 _threads.push_back (thread_id);
743 PortAudioBackend::join_process_threads ()
747 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
750 if (pthread_join (*i, &status)) {
751 DEBUG_AUDIO("Cannot terminate process thread.");
760 PortAudioBackend::in_process_thread ()
762 if (pthread_equal (_main_blocking_thread, pthread_self()) != 0) {
766 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
768 if (pthread_equal (*i, pthread_self ()) != 0) {
776 PortAudioBackend::process_thread_count ()
778 return _threads.size ();
782 PortAudioBackend::update_latencies ()
784 // trigger latency callback in RT thread (locked graph)
785 port_connect_add_remove_callback();
791 PortAudioBackend::private_handle () const
797 PortAudioBackend::my_name () const
799 return _instance_name;
803 PortAudioBackend::available () const
805 return _run && _active;
809 PortAudioBackend::port_name_size () const
815 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
817 if (!valid_port (port)) {
818 DEBUG_PORTS("set_port_name: Invalid Port(s)\n");
821 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
825 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
827 if (!valid_port (port)) {
828 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
829 return std::string ();
831 return static_cast<PamPort*>(port)->name ();
835 PortAudioBackend::get_port_property (PortHandle port,
836 const std::string& key,
838 std::string& type) const
840 if (!valid_port (port)) {
841 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
845 if (key == "http://jackaudio.org/metadata/pretty-name") {
847 value = static_cast<PamPort*>(port)->pretty_name ();
848 if (!value.empty()) {
855 PortEngine::PortHandle
856 PortAudioBackend::get_port_by_name (const std::string& name) const
858 PortHandle port = (PortHandle) find_port (name);
863 PortAudioBackend::get_ports (
864 const std::string& port_name_pattern,
865 DataType type, PortFlags flags,
866 std::vector<std::string>& port_names) const
870 bool use_regexp = false;
871 if (port_name_pattern.size () > 0) {
872 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
876 for (size_t i = 0; i < _ports.size (); ++i) {
877 PamPort* port = _ports[i];
878 if ((port->type () == type) && flags == (port->flags () & flags)) {
879 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
880 port_names.push_back (port->name ());
886 regfree (&port_regex);
892 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
894 if (!valid_port (port)) {
895 return DataType::NIL;
897 return static_cast<PamPort*>(port)->type ();
900 PortEngine::PortHandle
901 PortAudioBackend::register_port (
902 const std::string& name,
903 ARDOUR::DataType type,
904 ARDOUR::PortFlags flags)
906 if (name.size () == 0) { return 0; }
907 if (flags & IsPhysical) { return 0; }
908 return add_port (_instance_name + ":" + name, type, flags);
911 PortEngine::PortHandle
912 PortAudioBackend::add_port (
913 const std::string& name,
914 ARDOUR::DataType type,
915 ARDOUR::PortFlags flags)
917 assert(name.size ());
918 if (find_port (name)) {
920 string_compose("register_port: Port already exists: (%1)\n", name));
923 PamPort* port = NULL;
925 case DataType::AUDIO:
926 port = new PortAudioPort(*this, name, flags);
929 port = new PortMidiPort(*this, name, flags);
932 DEBUG_PORTS("register_port: Invalid Data Type.\n");
936 _ports.push_back (port);
942 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
947 PamPort* port = static_cast<PamPort*>(port_handle);
948 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
949 if (i == _ports.end ()) {
950 DEBUG_PORTS("unregister_port: Failed to find port\n");
953 disconnect_all(port_handle);
959 PortAudioBackend::register_system_audio_ports()
963 const uint32_t a_ins = _n_inputs;
964 const uint32_t a_out = _n_outputs;
966 // XXX PA reported stream latencies don't match measurements
967 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
968 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
971 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
972 for (uint32_t i = 0; i < a_ins; ++i) {
974 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
975 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
977 set_latency_range (p, false, lr);
978 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
979 audio_port->set_pretty_name (
980 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
981 _system_inputs.push_back (audio_port);
984 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
985 for (uint32_t i = 0; i < a_out; ++i) {
987 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
988 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
990 set_latency_range (p, true, lr);
991 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
992 audio_port->set_pretty_name (
993 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
994 _system_outputs.push_back(audio_port);
1000 PortAudioBackend::register_system_midi_ports()
1002 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
1003 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
1008 lr.min = lr.max = _samples_per_period;
1010 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
1012 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
1015 std::string port_name = "system_midi:" + (*i)->name() + " capture";
1017 add_port (port_name,
1019 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1021 set_latency_range (p, false, lr);
1022 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1023 midi_port->set_pretty_name ((*i)->name());
1024 _system_midi_in.push_back (midi_port);
1025 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
1028 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
1030 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
1031 i != outputs.end ();
1033 std::string port_name = "system_midi:" + (*i)->name() + " playback";
1035 add_port (port_name,
1037 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1039 set_latency_range (p, false, lr);
1040 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1041 midi_port->set_n_periods(2);
1042 midi_port->set_pretty_name ((*i)->name());
1043 _system_midi_out.push_back (midi_port);
1044 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1050 PortAudioBackend::unregister_ports (bool system_only)
1053 _system_inputs.clear();
1054 _system_outputs.clear();
1055 _system_midi_in.clear();
1056 _system_midi_out.clear();
1057 while (i < _ports.size ()) {
1058 PamPort* port = _ports[i];
1059 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1060 port->disconnect_all ();
1062 _ports.erase (_ports.begin() + i);
1070 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1072 PamPort* src_port = find_port (src);
1073 PamPort* dst_port = find_port (dst);
1076 DEBUG_PORTS(string_compose("connect: Invalid Source port: (%1)\n", src));
1080 DEBUG_PORTS(string_compose("connect: Invalid Destination port: (%1)\n", dst));
1083 return src_port->connect (dst_port);
1087 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1089 PamPort* src_port = find_port (src);
1090 PamPort* dst_port = find_port (dst);
1092 if (!src_port || !dst_port) {
1093 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1096 return src_port->disconnect (dst_port);
1100 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1102 PamPort* dst_port = find_port (dst);
1103 if (!valid_port (src)) {
1104 DEBUG_PORTS("connect: Invalid Source Port Handle\n");
1108 DEBUG_PORTS(string_compose("connect: Invalid Destination Port (%1)\n", dst));
1111 return static_cast<PamPort*>(src)->connect (dst_port);
1115 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1117 PamPort* dst_port = find_port (dst);
1118 if (!valid_port (src) || !dst_port) {
1119 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1122 return static_cast<PamPort*>(src)->disconnect (dst_port);
1126 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1128 if (!valid_port (port)) {
1129 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1132 static_cast<PamPort*>(port)->disconnect_all ();
1137 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1139 if (!valid_port (port)) {
1140 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1143 return static_cast<PamPort*>(port)->is_connected ();
1147 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1149 PamPort* dst_port = find_port (dst);
1150 if (!valid_port (src) || !dst_port) {
1151 DEBUG_PORTS("connected_to: Invalid Port\n");
1154 return static_cast<PamPort*>(src)->is_connected (dst_port);
1158 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1160 if (!valid_port (port)) {
1161 DEBUG_PORTS("physically_connected: Invalid Port\n");
1164 return static_cast<PamPort*>(port)->is_physically_connected ();
1168 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1170 if (!valid_port (port)) {
1171 DEBUG_PORTS("get_connections: Invalid Port\n");
1175 assert (0 == names.size ());
1177 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1179 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1180 names.push_back ((*i)->name ());
1183 return (int)names.size ();
1188 PortAudioBackend::midi_event_get (
1189 pframes_t& timestamp,
1190 size_t& size, uint8_t** buf, void* port_buffer,
1191 uint32_t event_index)
1193 if (!buf || !port_buffer) return -1;
1194 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1195 if (event_index >= source.size ()) {
1198 PortMidiEvent * const event = source[event_index].get ();
1200 timestamp = event->timestamp ();
1201 size = event->size ();
1202 *buf = event->data ();
1207 PortAudioBackend::midi_event_put (
1209 pframes_t timestamp,
1210 const uint8_t* buffer, size_t size)
1212 if (!buffer || !port_buffer) return -1;
1213 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1214 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1215 // nevermind, ::get_buffer() sorts events
1216 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1217 (pframes_t)dst.back ()->timestamp (),
1220 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1225 PortAudioBackend::get_midi_event_count (void* port_buffer)
1227 if (!port_buffer) return 0;
1228 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1232 PortAudioBackend::midi_clear (void* port_buffer)
1234 if (!port_buffer) return;
1235 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1243 PortAudioBackend::can_monitor_input () const
1249 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1255 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1261 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1266 /* Latency management */
1269 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1271 if (!valid_port (port)) {
1272 DEBUG_PORTS("PamPort::set_latency_range (): invalid port.\n");
1274 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1278 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1281 if (!valid_port (port)) {
1282 DEBUG_PORTS("PamPort::get_latency_range (): invalid port.\n");
1287 PamPort* p = static_cast<PamPort*>(port);
1290 r = p->latency_range (for_playback);
1292 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1293 if (p->is_input() && for_playback) {
1294 r.min += _samples_per_period;
1295 r.max += _samples_per_period;
1297 if (p->is_output() && !for_playback) {
1298 r.min += _samples_per_period;
1299 r.max += _samples_per_period;
1305 /* Discovering physical ports */
1308 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1310 if (!valid_port (port)) {
1311 DEBUG_PORTS("PamPort::port_is_physical (): invalid port.\n");
1314 return static_cast<PamPort*>(port)->is_physical ();
1318 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1320 for (size_t i = 0; i < _ports.size (); ++i) {
1321 PamPort* port = _ports[i];
1322 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1323 port_names.push_back (port->name ());
1329 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1331 for (size_t i = 0; i < _ports.size (); ++i) {
1332 PamPort* port = _ports[i];
1333 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1334 port_names.push_back (port->name ());
1340 PortAudioBackend::n_physical_outputs () const
1344 for (size_t i = 0; i < _ports.size (); ++i) {
1345 PamPort* port = _ports[i];
1346 if (port->is_output () && port->is_physical ()) {
1347 switch (port->type ()) {
1348 case DataType::AUDIO:
1351 case DataType::MIDI:
1360 cc.set (DataType::AUDIO, n_audio);
1361 cc.set (DataType::MIDI, n_midi);
1366 PortAudioBackend::n_physical_inputs () const
1370 for (size_t i = 0; i < _ports.size (); ++i) {
1371 PamPort* port = _ports[i];
1372 if (port->is_input () && port->is_physical ()) {
1373 switch (port->type ()) {
1374 case DataType::AUDIO:
1377 case DataType::MIDI:
1386 cc.set (DataType::AUDIO, n_audio);
1387 cc.set (DataType::MIDI, n_midi);
1391 /* Getting access to the data buffer for a port */
1394 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1396 if (!port || !valid_port (port)) return NULL;
1397 return static_cast<PamPort*>(port)->get_buffer (nframes);
1402 PortAudioBackend::main_blocking_process_thread ()
1404 AudioEngine::thread_init_callback (this);
1406 _processed_samples = 0;
1408 uint64_t clock1, clock2;
1409 int64_t min_elapsed_us = 1000000;
1410 int64_t max_elapsed_us = 0;
1411 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1412 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1414 manager.registration_callback();
1415 manager.graph_order_callback();
1417 if (_pcmio->start_stream() != PortAudioIO::NoError) {
1418 _pcmio->close_stream ();
1420 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1423 #ifdef USE_MMCSS_THREAD_PRIORITIES
1426 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
1427 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
1428 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
1433 DWORD tid = GetCurrentThreadId ();
1434 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1438 if (_freewheeling != _freewheel) {
1439 _freewheel = _freewheeling;
1440 engine.freewheel_callback (_freewheel);
1445 switch (_pcmio->next_cycle (_samples_per_period)) {
1449 DEBUG_AUDIO("PortAudio: Xrun\n");
1453 PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
1458 clock1 = utils::get_microseconds ();
1462 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1463 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1466 /* de-queue incoming midi*/
1468 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1469 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1472 pframes_t sample_offset;
1474 size_t size = sizeof(data);
1475 while (_midiio->dequeue_input_event (i,
1476 m_cycle_timer.get_start (),
1477 m_cycle_timer.get_next_start (),
1481 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1482 midi_event_put (mbuf, sample_offset, data, size);
1483 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1484 "sample_offset: %2 timestamp: %3, size: %4\n",
1485 _midiio->get_inputs ()[i]->name (),
1489 size = sizeof(data);
1493 /* clear output buffers */
1494 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1495 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1498 m_last_cycle_start = m_cycle_timer.get_start ();
1499 m_cycle_timer.reset_start(utils::get_microseconds());
1502 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1503 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1504 m_total_deviation_us += ::llabs(deviation_us);
1505 m_max_deviation_us =
1506 std::max (m_max_deviation_us, (uint64_t)::llabs (deviation_us));
1508 if ((m_cycle_count % 1000) == 0) {
1509 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1511 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1512 mean_deviation_us * 1e-3,
1513 m_max_deviation_us * 1e-3));
1516 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1517 DEBUG_TIMING (string_compose (
1518 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1519 cycle_diff_us * 1e-3,
1520 m_cycle_timer.get_length_us () * 1e-3,
1521 deviation_us * 1e-3));
1524 /* call engine process callback */
1525 if (engine.process_callback (_samples_per_period)) {
1526 _pcmio->close_stream ();
1531 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1532 static_cast<PortMidiPort*>(*it)->next_period();
1534 /* queue outgoing midi */
1536 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1537 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1539 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1540 uint64_t timestamp =
1541 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1543 string_compose ("Queuing outgoing MIDI data for device: "
1544 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1545 _midiio->get_outputs ()[i]->name (),
1546 (*mit)->timestamp (),
1549 _midiio->enqueue_output_event (
1550 i, timestamp, (*mit)->data (), (*mit)->size ());
1554 /* write back audio */
1556 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1557 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1560 _processed_samples += _samples_per_period;
1562 /* calculate DSP load */
1563 clock2 = utils::get_microseconds ();
1564 const int64_t elapsed_time = clock2 - clock1;
1565 _dsp_load = elapsed_time / (float) nomial_time;
1567 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1568 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1569 if ((m_cycle_count % 1000) == 0) {
1571 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1579 // zero audio input buffers
1580 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1581 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1584 clock1 = utils::get_microseconds ();
1586 // TODO clear midi or stop midi recv when entering fwheelin'
1588 if (engine.process_callback (_samples_per_period)) {
1589 _pcmio->close_stream();
1594 // drop all outgoing MIDI messages
1595 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1596 void *bptr = (*it)->get_buffer(0);
1601 Glib::usleep (100); // don't hog cpu
1604 bool connections_changed = false;
1605 bool ports_changed = false;
1606 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1607 if (_port_change_flag) {
1608 ports_changed = true;
1609 _port_change_flag = false;
1611 if (!_port_connection_queue.empty ()) {
1612 connections_changed = true;
1614 while (!_port_connection_queue.empty ()) {
1615 PortConnectData *c = _port_connection_queue.back ();
1616 manager.connect_callback (c->a, c->b, c->c);
1617 _port_connection_queue.pop_back ();
1620 pthread_mutex_unlock (&_port_callback_mutex);
1622 if (ports_changed) {
1623 manager.registration_callback();
1625 if (connections_changed) {
1626 manager.graph_order_callback();
1628 if (connections_changed || ports_changed) {
1629 engine.latency_callback(false);
1630 engine.latency_callback(true);
1634 _pcmio->close_stream();
1637 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1640 #ifdef USE_MMCSS_THREAD_PRIORITIES
1641 mmcss::revert_thread_characteristics (task_handle);
1648 /******************************************************************************/
1650 static boost::shared_ptr<PortAudioBackend> _instance;
1652 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1653 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1654 static int deinstantiate ();
1655 static bool already_configured ();
1656 static bool available ();
1658 static ARDOUR::AudioBackendInfo _descriptor = {
1667 static boost::shared_ptr<AudioBackend>
1668 backend_factory (AudioEngine& e)
1671 _instance.reset (new PortAudioBackend (e, _descriptor));
1677 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1679 s_instance_name = arg1;
1691 already_configured ()
1702 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1704 return &_descriptor;
1708 /******************************************************************************/
1709 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1714 _capture_latency_range.min = 0;
1715 _capture_latency_range.max = 0;
1716 _playback_latency_range.min = 0;
1717 _playback_latency_range.max = 0;
1720 PamPort::~PamPort () {
1725 int PamPort::connect (PamPort *port)
1728 DEBUG_PORTS("PamPort::connect (): invalid (null) port\n");
1732 if (type () != port->type ()) {
1733 DEBUG_PORTS("PamPort::connect (): wrong port-type\n");
1737 if (is_output () && port->is_output ()) {
1738 DEBUG_PORTS("PamPort::connect (): cannot inter-connect output ports.\n");
1742 if (is_input () && port->is_input ()) {
1743 DEBUG_PORTS("PamPort::connect (): cannot inter-connect input ports.\n");
1748 DEBUG_PORTS("PamPort::connect (): cannot self-connect ports.\n");
1752 if (is_connected (port)) {
1753 #if 0 // don't bother to warn about this for now. just ignore it
1754 PBD::error << _("PamPort::connect (): ports are already connected:")
1755 << " (" << name () << ") -> (" << port->name () << ")"
1761 _connect (port, true);
1766 void PamPort::_connect (PamPort *port, bool callback)
1768 _connections.push_back (port);
1770 port->_connect (this, false);
1771 _osx_backend.port_connect_callback (name(), port->name(), true);
1775 int PamPort::disconnect (PamPort *port)
1778 DEBUG_PORTS("PamPort::disconnect (): invalid (null) port\n");
1782 if (!is_connected (port)) {
1783 DEBUG_PORTS(string_compose(
1784 "PamPort::disconnect (): ports are not connected: (%1) -> (%2)\n",
1789 _disconnect (port, true);
1793 void PamPort::_disconnect (PamPort *port, bool callback)
1795 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1797 assert (it != _connections.end ());
1799 _connections.erase (it);
1802 port->_disconnect (this, false);
1803 _osx_backend.port_connect_callback (name(), port->name(), false);
1808 void PamPort::disconnect_all ()
1810 while (!_connections.empty ()) {
1811 _connections.back ()->_disconnect (this, false);
1812 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1813 _connections.pop_back ();
1818 PamPort::is_connected (const PamPort *port) const
1820 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1823 bool PamPort::is_physically_connected () const
1825 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1826 if ((*it)->is_physical ()) {
1833 /******************************************************************************/
1835 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1836 : PamPort (b, name, flags)
1838 memset (_buffer, 0, sizeof (_buffer));
1839 #ifndef PLATFORM_WINDOWS
1840 mlock(_buffer, sizeof (_buffer));
1844 PortAudioPort::~PortAudioPort () { }
1846 void* PortAudioPort::get_buffer (pframes_t n_samples)
1849 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1850 if (it == get_connections ().end ()) {
1851 memset (_buffer, 0, n_samples * sizeof (Sample));
1853 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1854 assert (source && source->is_output ());
1855 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1856 while (++it != get_connections ().end ()) {
1857 source = static_cast<const PortAudioPort*>(*it);
1858 assert (source && source->is_output ());
1859 Sample* dst = buffer ();
1860 const Sample* src = source->const_buffer ();
1861 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1871 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1872 : PamPort (b, name, flags)
1876 _buffer[0].clear ();
1877 _buffer[1].clear ();
1880 PortMidiPort::~PortMidiPort () { }
1882 struct MidiEventSorter {
1883 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1888 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1891 (_buffer[_bufperiod]).clear ();
1892 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1893 i != get_connections ().end ();
1895 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1896 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1897 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1900 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1902 return &(_buffer[_bufperiod]);
1905 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1907 , _timestamp (timestamp)
1911 _data = (uint8_t*) malloc (size);
1912 memcpy (_data, data, size);
1916 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1917 : _size (other.size ())
1918 , _timestamp (other.timestamp ())
1921 if (other.size () && other.const_data ()) {
1922 _data = (uint8_t*) malloc (other.size ());
1923 memcpy (_data, other.const_data (), other.size ());
1927 PortMidiEvent::~PortMidiEvent () {