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 m_dsp_calc.set_max_time_us (m_cycle_timer.get_length_us());
521 DEBUG_MIDI ("Registering MIDI ports\n");
523 if (register_system_midi_ports () != 0) {
524 DEBUG_PORTS("Failed to register system midi ports.\n")
529 DEBUG_AUDIO ("Registering Audio ports\n");
531 if (register_system_audio_ports()) {
532 DEBUG_PORTS("Failed to register system audio ports.\n");
537 engine.sample_rate_change (_samplerate);
538 engine.buffer_size_change (_samples_per_period);
540 if (engine.reestablish_ports ()) {
541 DEBUG_PORTS("Could not re-establish ports.\n");
546 engine.reconnect_ports ();
548 _port_change_flag = false;
550 if (!start_blocking_process_thread()) {
558 PortAudioBackend::start_blocking_process_thread ()
560 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
561 &_main_blocking_thread, pthread_process, this))
563 if (pthread_create (&_main_blocking_thread, NULL, pthread_process, this))
565 DEBUG_AUDIO("Failed to create main audio thread\n");
569 PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
574 while (!_active && --timeout > 0) { Glib::usleep (1000); }
576 if (timeout == 0 || !_active) {
577 DEBUG_AUDIO("Failed to start main audio thread\n");
578 _pcmio->close_stream();
588 PortAudioBackend::stop_blocking_process_thread ()
592 if (pthread_join (_main_blocking_thread, &status)) {
593 DEBUG_AUDIO("Failed to stop main audio thread\n");
601 PortAudioBackend::stop ()
611 if (!stop_blocking_process_thread ()) {
617 return (_active == false) ? 0 : -1;
621 PortAudioBackend::freewheel (bool onoff)
623 if (onoff == _freewheeling) {
626 _freewheeling = onoff;
631 PortAudioBackend::dsp_load () const
633 return 100.f * _dsp_load;
637 PortAudioBackend::raw_buffer_size (DataType t)
640 case DataType::AUDIO:
641 return _samples_per_period * sizeof(Sample);
643 return _max_buffer_size; // XXX not really limited
650 PortAudioBackend::sample_time ()
652 return _processed_samples;
656 PortAudioBackend::sample_time_at_cycle_start ()
658 return _processed_samples;
662 PortAudioBackend::samples_since_cycle_start ()
664 if (!_active || !_run || _freewheeling || _freewheel) {
667 if (!m_cycle_timer.valid()) {
671 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
675 PortAudioBackend::name_to_id(std::string device_name) const {
676 uint32_t device_id = UINT32_MAX;
677 std::map<int, std::string> devices;
678 _pcmio->input_device_list(devices);
679 _pcmio->output_device_list(devices);
681 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
682 if (i->second == device_name) {
683 device_id = i->first;
691 PortAudioBackend::portaudio_process_thread (void *arg)
693 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
694 boost::function<void ()> f = td->f;
697 #ifdef USE_MMCSS_THREAD_PRIORITIES
700 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
701 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
702 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
707 DWORD tid = GetCurrentThreadId ();
708 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
712 #ifdef USE_MMCSS_THREAD_PRIORITIES
713 mmcss::revert_thread_characteristics (task_handle);
720 PortAudioBackend::create_process_thread (boost::function<void()> func)
724 size_t stacksize = 100000;
726 ThreadData* td = new ThreadData (this, func, stacksize);
728 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
729 &thread_id, portaudio_process_thread, td)) {
730 pthread_attr_init (&attr);
731 pthread_attr_setstacksize (&attr, stacksize);
732 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
733 DEBUG_AUDIO("Cannot create process thread.");
734 pthread_attr_destroy (&attr);
737 pthread_attr_destroy (&attr);
740 _threads.push_back (thread_id);
745 PortAudioBackend::join_process_threads ()
749 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
752 if (pthread_join (*i, &status)) {
753 DEBUG_AUDIO("Cannot terminate process thread.");
762 PortAudioBackend::in_process_thread ()
764 if (pthread_equal (_main_blocking_thread, pthread_self()) != 0) {
768 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
770 if (pthread_equal (*i, pthread_self ()) != 0) {
778 PortAudioBackend::process_thread_count ()
780 return _threads.size ();
784 PortAudioBackend::update_latencies ()
786 // trigger latency callback in RT thread (locked graph)
787 port_connect_add_remove_callback();
793 PortAudioBackend::private_handle () const
799 PortAudioBackend::my_name () const
801 return _instance_name;
805 PortAudioBackend::available () const
807 return _run && _active;
811 PortAudioBackend::port_name_size () const
817 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
819 if (!valid_port (port)) {
820 DEBUG_PORTS("set_port_name: Invalid Port(s)\n");
823 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
827 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
829 if (!valid_port (port)) {
830 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
831 return std::string ();
833 return static_cast<PamPort*>(port)->name ();
837 PortAudioBackend::get_port_property (PortHandle port,
838 const std::string& key,
840 std::string& type) const
842 if (!valid_port (port)) {
843 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
847 if (key == "http://jackaudio.org/metadata/pretty-name") {
849 value = static_cast<PamPort*>(port)->pretty_name ();
850 if (!value.empty()) {
857 PortEngine::PortHandle
858 PortAudioBackend::get_port_by_name (const std::string& name) const
860 PortHandle port = (PortHandle) find_port (name);
865 PortAudioBackend::get_ports (
866 const std::string& port_name_pattern,
867 DataType type, PortFlags flags,
868 std::vector<std::string>& port_names) const
872 bool use_regexp = false;
873 if (port_name_pattern.size () > 0) {
874 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
878 for (size_t i = 0; i < _ports.size (); ++i) {
879 PamPort* port = _ports[i];
880 if ((port->type () == type) && flags == (port->flags () & flags)) {
881 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
882 port_names.push_back (port->name ());
888 regfree (&port_regex);
894 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
896 if (!valid_port (port)) {
897 return DataType::NIL;
899 return static_cast<PamPort*>(port)->type ();
902 PortEngine::PortHandle
903 PortAudioBackend::register_port (
904 const std::string& name,
905 ARDOUR::DataType type,
906 ARDOUR::PortFlags flags)
908 if (name.size () == 0) { return 0; }
909 if (flags & IsPhysical) { return 0; }
910 return add_port (_instance_name + ":" + name, type, flags);
913 PortEngine::PortHandle
914 PortAudioBackend::add_port (
915 const std::string& name,
916 ARDOUR::DataType type,
917 ARDOUR::PortFlags flags)
919 assert(name.size ());
920 if (find_port (name)) {
922 string_compose("register_port: Port already exists: (%1)\n", name));
925 PamPort* port = NULL;
927 case DataType::AUDIO:
928 port = new PortAudioPort(*this, name, flags);
931 port = new PortMidiPort(*this, name, flags);
934 DEBUG_PORTS("register_port: Invalid Data Type.\n");
938 _ports.push_back (port);
944 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
949 PamPort* port = static_cast<PamPort*>(port_handle);
950 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
951 if (i == _ports.end ()) {
952 DEBUG_PORTS("unregister_port: Failed to find port\n");
955 disconnect_all(port_handle);
961 PortAudioBackend::register_system_audio_ports()
965 const uint32_t a_ins = _n_inputs;
966 const uint32_t a_out = _n_outputs;
968 // XXX PA reported stream latencies don't match measurements
969 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
970 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
973 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
974 for (uint32_t i = 0; i < a_ins; ++i) {
976 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
977 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
979 set_latency_range (p, false, lr);
980 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
981 audio_port->set_pretty_name (
982 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
983 _system_inputs.push_back (audio_port);
986 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
987 for (uint32_t i = 0; i < a_out; ++i) {
989 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
990 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
992 set_latency_range (p, true, lr);
993 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
994 audio_port->set_pretty_name (
995 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
996 _system_outputs.push_back(audio_port);
1002 PortAudioBackend::register_system_midi_ports()
1004 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
1005 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
1010 lr.min = lr.max = _samples_per_period;
1012 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
1014 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
1017 std::string port_name = "system_midi:" + (*i)->name() + " capture";
1019 add_port (port_name,
1021 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1023 set_latency_range (p, false, lr);
1024 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1025 midi_port->set_pretty_name ((*i)->name());
1026 _system_midi_in.push_back (midi_port);
1027 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
1030 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
1032 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
1033 i != outputs.end ();
1035 std::string port_name = "system_midi:" + (*i)->name() + " playback";
1037 add_port (port_name,
1039 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1041 set_latency_range (p, false, lr);
1042 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1043 midi_port->set_n_periods(2);
1044 midi_port->set_pretty_name ((*i)->name());
1045 _system_midi_out.push_back (midi_port);
1046 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1052 PortAudioBackend::unregister_ports (bool system_only)
1055 _system_inputs.clear();
1056 _system_outputs.clear();
1057 _system_midi_in.clear();
1058 _system_midi_out.clear();
1059 while (i < _ports.size ()) {
1060 PamPort* port = _ports[i];
1061 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1062 port->disconnect_all ();
1064 _ports.erase (_ports.begin() + i);
1072 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1074 PamPort* src_port = find_port (src);
1075 PamPort* dst_port = find_port (dst);
1078 DEBUG_PORTS(string_compose("connect: Invalid Source port: (%1)\n", src));
1082 DEBUG_PORTS(string_compose("connect: Invalid Destination port: (%1)\n", dst));
1085 return src_port->connect (dst_port);
1089 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1091 PamPort* src_port = find_port (src);
1092 PamPort* dst_port = find_port (dst);
1094 if (!src_port || !dst_port) {
1095 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1098 return src_port->disconnect (dst_port);
1102 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1104 PamPort* dst_port = find_port (dst);
1105 if (!valid_port (src)) {
1106 DEBUG_PORTS("connect: Invalid Source Port Handle\n");
1110 DEBUG_PORTS(string_compose("connect: Invalid Destination Port (%1)\n", dst));
1113 return static_cast<PamPort*>(src)->connect (dst_port);
1117 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1119 PamPort* dst_port = find_port (dst);
1120 if (!valid_port (src) || !dst_port) {
1121 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1124 return static_cast<PamPort*>(src)->disconnect (dst_port);
1128 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1130 if (!valid_port (port)) {
1131 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1134 static_cast<PamPort*>(port)->disconnect_all ();
1139 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1141 if (!valid_port (port)) {
1142 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1145 return static_cast<PamPort*>(port)->is_connected ();
1149 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1151 PamPort* dst_port = find_port (dst);
1152 if (!valid_port (src) || !dst_port) {
1153 DEBUG_PORTS("connected_to: Invalid Port\n");
1156 return static_cast<PamPort*>(src)->is_connected (dst_port);
1160 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1162 if (!valid_port (port)) {
1163 DEBUG_PORTS("physically_connected: Invalid Port\n");
1166 return static_cast<PamPort*>(port)->is_physically_connected ();
1170 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1172 if (!valid_port (port)) {
1173 DEBUG_PORTS("get_connections: Invalid Port\n");
1177 assert (0 == names.size ());
1179 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1181 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1182 names.push_back ((*i)->name ());
1185 return (int)names.size ();
1190 PortAudioBackend::midi_event_get (
1191 pframes_t& timestamp,
1192 size_t& size, uint8_t** buf, void* port_buffer,
1193 uint32_t event_index)
1195 if (!buf || !port_buffer) return -1;
1196 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1197 if (event_index >= source.size ()) {
1200 PortMidiEvent * const event = source[event_index].get ();
1202 timestamp = event->timestamp ();
1203 size = event->size ();
1204 *buf = event->data ();
1209 PortAudioBackend::midi_event_put (
1211 pframes_t timestamp,
1212 const uint8_t* buffer, size_t size)
1214 if (!buffer || !port_buffer) return -1;
1215 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1216 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1217 // nevermind, ::get_buffer() sorts events
1218 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1219 (pframes_t)dst.back ()->timestamp (),
1222 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1227 PortAudioBackend::get_midi_event_count (void* port_buffer)
1229 if (!port_buffer) return 0;
1230 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1234 PortAudioBackend::midi_clear (void* port_buffer)
1236 if (!port_buffer) return;
1237 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1245 PortAudioBackend::can_monitor_input () const
1251 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1257 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1263 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1268 /* Latency management */
1271 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1273 if (!valid_port (port)) {
1274 DEBUG_PORTS("PamPort::set_latency_range (): invalid port.\n");
1276 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1280 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1283 if (!valid_port (port)) {
1284 DEBUG_PORTS("PamPort::get_latency_range (): invalid port.\n");
1289 PamPort* p = static_cast<PamPort*>(port);
1292 r = p->latency_range (for_playback);
1294 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1295 if (p->is_input() && for_playback) {
1296 r.min += _samples_per_period;
1297 r.max += _samples_per_period;
1299 if (p->is_output() && !for_playback) {
1300 r.min += _samples_per_period;
1301 r.max += _samples_per_period;
1307 /* Discovering physical ports */
1310 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1312 if (!valid_port (port)) {
1313 DEBUG_PORTS("PamPort::port_is_physical (): invalid port.\n");
1316 return static_cast<PamPort*>(port)->is_physical ();
1320 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1322 for (size_t i = 0; i < _ports.size (); ++i) {
1323 PamPort* port = _ports[i];
1324 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1325 port_names.push_back (port->name ());
1331 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1333 for (size_t i = 0; i < _ports.size (); ++i) {
1334 PamPort* port = _ports[i];
1335 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1336 port_names.push_back (port->name ());
1342 PortAudioBackend::n_physical_outputs () const
1346 for (size_t i = 0; i < _ports.size (); ++i) {
1347 PamPort* port = _ports[i];
1348 if (port->is_output () && port->is_physical ()) {
1349 switch (port->type ()) {
1350 case DataType::AUDIO:
1353 case DataType::MIDI:
1362 cc.set (DataType::AUDIO, n_audio);
1363 cc.set (DataType::MIDI, n_midi);
1368 PortAudioBackend::n_physical_inputs () const
1372 for (size_t i = 0; i < _ports.size (); ++i) {
1373 PamPort* port = _ports[i];
1374 if (port->is_input () && port->is_physical ()) {
1375 switch (port->type ()) {
1376 case DataType::AUDIO:
1379 case DataType::MIDI:
1388 cc.set (DataType::AUDIO, n_audio);
1389 cc.set (DataType::MIDI, n_midi);
1393 /* Getting access to the data buffer for a port */
1396 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1398 if (!port || !valid_port (port)) return NULL;
1399 return static_cast<PamPort*>(port)->get_buffer (nframes);
1404 PortAudioBackend::main_blocking_process_thread ()
1406 AudioEngine::thread_init_callback (this);
1408 _processed_samples = 0;
1410 manager.registration_callback();
1411 manager.graph_order_callback();
1413 if (_pcmio->start_stream() != PortAudioIO::NoError) {
1414 _pcmio->close_stream ();
1416 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1419 #ifdef USE_MMCSS_THREAD_PRIORITIES
1422 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
1423 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
1424 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
1429 DWORD tid = GetCurrentThreadId ();
1430 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1434 if (_freewheeling != _freewheel) {
1435 _freewheel = _freewheeling;
1436 engine.freewheel_callback (_freewheel);
1441 switch (_pcmio->next_cycle (_samples_per_period)) {
1445 DEBUG_AUDIO("PortAudio: Xrun\n");
1449 PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
1453 if (!blocking_process_main()) {
1458 if (!blocking_process_freewheel()) {
1463 process_port_connection_changes();
1465 _pcmio->close_stream();
1468 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1471 #ifdef USE_MMCSS_THREAD_PRIORITIES
1472 mmcss::revert_thread_characteristics (task_handle);
1479 PortAudioBackend::blocking_process_main ()
1482 uint64_t min_elapsed_us = 1000000;
1483 uint64_t max_elapsed_us = 0;
1485 m_dsp_calc.set_start_timestamp_us (utils::get_microseconds());
1489 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1490 it != _system_inputs.end();
1492 _pcmio->get_capture_channel(
1493 i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1496 process_incoming_midi ();
1498 /* clear output buffers */
1499 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1500 it != _system_outputs.end();
1502 memset((*it)->get_buffer(_samples_per_period),
1504 _samples_per_period * sizeof(Sample));
1507 m_last_cycle_start = m_cycle_timer.get_start();
1508 m_cycle_timer.reset_start(utils::get_microseconds());
1511 uint64_t cycle_diff_us = (m_cycle_timer.get_start() - m_last_cycle_start);
1512 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1513 m_total_deviation_us += ::llabs(deviation_us);
1514 m_max_deviation_us =
1515 std::max(m_max_deviation_us, (uint64_t)::llabs(deviation_us));
1517 if ((m_cycle_count % 1000) == 0) {
1518 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1519 DEBUG_TIMING(string_compose("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1520 mean_deviation_us * 1e-3,
1521 m_max_deviation_us * 1e-3));
1524 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1526 string_compose("time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1527 cycle_diff_us * 1e-3,
1528 m_cycle_timer.get_length_us() * 1e-3,
1529 deviation_us * 1e-3));
1532 /* call engine process callback */
1533 if (engine.process_callback(_samples_per_period)) {
1534 _pcmio->close_stream();
1539 process_outgoing_midi ();
1541 /* write back audio */
1543 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1544 it != _system_outputs.end();
1546 _pcmio->set_playback_channel(
1548 (float const*)(*it)->get_buffer(_samples_per_period),
1549 _samples_per_period);
1552 _processed_samples += _samples_per_period;
1554 /* calculate DSP load */
1555 m_dsp_calc.set_stop_timestamp_us (utils::get_microseconds());
1556 _dsp_load = m_dsp_calc.get_dsp_load();
1558 DEBUG_TIMING(string_compose("DSP Load: %1\n", _dsp_load));
1560 max_elapsed_us = std::max(m_dsp_calc.elapsed_time_us(), max_elapsed_us);
1561 min_elapsed_us = std::min(m_dsp_calc.elapsed_time_us(), min_elapsed_us);
1562 if ((m_cycle_count % 1000) == 0) {
1563 DEBUG_TIMING(string_compose("Elapsed process time(usecs) max: %1, min: %2\n",
1572 PortAudioBackend::blocking_process_freewheel()
1574 // zero audio input buffers
1575 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1576 it != _system_inputs.end();
1578 memset((*it)->get_buffer(_samples_per_period),
1580 _samples_per_period * sizeof(Sample));
1583 // TODO clear midi or stop midi recv when entering fwheelin'
1585 if (engine.process_callback(_samples_per_period)) {
1586 _pcmio->close_stream();
1591 // drop all outgoing MIDI messages
1592 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1593 it != _system_midi_out.end();
1595 void* bptr = (*it)->get_buffer(0);
1600 Glib::usleep(100); // don't hog cpu
1605 PortAudioBackend::process_incoming_midi ()
1608 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin();
1609 it != _system_midi_in.end();
1611 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1614 pframes_t sample_offset;
1616 size_t size = sizeof(data);
1617 while (_midiio->dequeue_input_event(i,
1618 m_cycle_timer.get_start(),
1619 m_cycle_timer.get_next_start(),
1623 sample_offset = m_cycle_timer.samples_since_cycle_start(timestamp);
1624 midi_event_put(mbuf, sample_offset, data, size);
1625 DEBUG_MIDI(string_compose("Dequeuing incoming MIDI data for device: %1 "
1626 "sample_offset: %2 timestamp: %3, size: %4\n",
1627 _midiio->get_inputs()[i]->name(),
1631 size = sizeof(data);
1637 PortAudioBackend::process_outgoing_midi ()
1640 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin();
1641 it != _system_midi_out.end();
1643 static_cast<PortMidiPort*>(*it)->next_period();
1645 /* queue outgoing midi */
1647 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1648 it != _system_midi_out.end();
1650 const PortMidiBuffer* src =
1651 static_cast<const PortMidiPort*>(*it)->const_buffer();
1653 for (PortMidiBuffer::const_iterator mit = src->begin(); mit != src->end();
1655 uint64_t timestamp =
1656 m_cycle_timer.timestamp_from_sample_offset((*mit)->timestamp());
1657 DEBUG_MIDI(string_compose("Queuing outgoing MIDI data for device: "
1658 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1659 _midiio->get_outputs()[i]->name(),
1660 (*mit)->timestamp(),
1663 _midiio->enqueue_output_event(i, timestamp, (*mit)->data(), (*mit)->size());
1669 PortAudioBackend::process_port_connection_changes ()
1671 bool connections_changed = false;
1672 bool ports_changed = false;
1673 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1674 if (_port_change_flag) {
1675 ports_changed = true;
1676 _port_change_flag = false;
1678 if (!_port_connection_queue.empty ()) {
1679 connections_changed = true;
1681 while (!_port_connection_queue.empty ()) {
1682 PortConnectData *c = _port_connection_queue.back ();
1683 manager.connect_callback (c->a, c->b, c->c);
1684 _port_connection_queue.pop_back ();
1687 pthread_mutex_unlock (&_port_callback_mutex);
1689 if (ports_changed) {
1690 manager.registration_callback();
1692 if (connections_changed) {
1693 manager.graph_order_callback();
1695 if (connections_changed || ports_changed) {
1696 engine.latency_callback(false);
1697 engine.latency_callback(true);
1701 /******************************************************************************/
1703 static boost::shared_ptr<PortAudioBackend> _instance;
1705 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1706 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1707 static int deinstantiate ();
1708 static bool already_configured ();
1709 static bool available ();
1711 static ARDOUR::AudioBackendInfo _descriptor = {
1720 static boost::shared_ptr<AudioBackend>
1721 backend_factory (AudioEngine& e)
1724 _instance.reset (new PortAudioBackend (e, _descriptor));
1730 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1732 s_instance_name = arg1;
1744 already_configured ()
1755 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1757 return &_descriptor;
1761 /******************************************************************************/
1762 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1767 _capture_latency_range.min = 0;
1768 _capture_latency_range.max = 0;
1769 _playback_latency_range.min = 0;
1770 _playback_latency_range.max = 0;
1773 PamPort::~PamPort () {
1778 int PamPort::connect (PamPort *port)
1781 DEBUG_PORTS("PamPort::connect (): invalid (null) port\n");
1785 if (type () != port->type ()) {
1786 DEBUG_PORTS("PamPort::connect (): wrong port-type\n");
1790 if (is_output () && port->is_output ()) {
1791 DEBUG_PORTS("PamPort::connect (): cannot inter-connect output ports.\n");
1795 if (is_input () && port->is_input ()) {
1796 DEBUG_PORTS("PamPort::connect (): cannot inter-connect input ports.\n");
1801 DEBUG_PORTS("PamPort::connect (): cannot self-connect ports.\n");
1805 if (is_connected (port)) {
1806 #if 0 // don't bother to warn about this for now. just ignore it
1807 PBD::error << _("PamPort::connect (): ports are already connected:")
1808 << " (" << name () << ") -> (" << port->name () << ")"
1814 _connect (port, true);
1819 void PamPort::_connect (PamPort *port, bool callback)
1821 _connections.push_back (port);
1823 port->_connect (this, false);
1824 _osx_backend.port_connect_callback (name(), port->name(), true);
1828 int PamPort::disconnect (PamPort *port)
1831 DEBUG_PORTS("PamPort::disconnect (): invalid (null) port\n");
1835 if (!is_connected (port)) {
1836 DEBUG_PORTS(string_compose(
1837 "PamPort::disconnect (): ports are not connected: (%1) -> (%2)\n",
1842 _disconnect (port, true);
1846 void PamPort::_disconnect (PamPort *port, bool callback)
1848 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1850 assert (it != _connections.end ());
1852 _connections.erase (it);
1855 port->_disconnect (this, false);
1856 _osx_backend.port_connect_callback (name(), port->name(), false);
1861 void PamPort::disconnect_all ()
1863 while (!_connections.empty ()) {
1864 _connections.back ()->_disconnect (this, false);
1865 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1866 _connections.pop_back ();
1871 PamPort::is_connected (const PamPort *port) const
1873 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1876 bool PamPort::is_physically_connected () const
1878 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1879 if ((*it)->is_physical ()) {
1886 /******************************************************************************/
1888 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1889 : PamPort (b, name, flags)
1891 memset (_buffer, 0, sizeof (_buffer));
1892 #ifndef PLATFORM_WINDOWS
1893 mlock(_buffer, sizeof (_buffer));
1897 PortAudioPort::~PortAudioPort () { }
1899 void* PortAudioPort::get_buffer (pframes_t n_samples)
1902 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1903 if (it == get_connections ().end ()) {
1904 memset (_buffer, 0, n_samples * sizeof (Sample));
1906 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1907 assert (source && source->is_output ());
1908 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1909 while (++it != get_connections ().end ()) {
1910 source = static_cast<const PortAudioPort*>(*it);
1911 assert (source && source->is_output ());
1912 Sample* dst = buffer ();
1913 const Sample* src = source->const_buffer ();
1914 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1924 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1925 : PamPort (b, name, flags)
1929 _buffer[0].clear ();
1930 _buffer[1].clear ();
1933 PortMidiPort::~PortMidiPort () { }
1935 struct MidiEventSorter {
1936 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1941 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1944 (_buffer[_bufperiod]).clear ();
1945 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1946 i != get_connections ().end ();
1948 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1949 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1950 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1953 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1955 return &(_buffer[_bufperiod]);
1958 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1960 , _timestamp (timestamp)
1964 _data = (uint8_t*) malloc (size);
1965 memcpy (_data, data, size);
1969 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1970 : _size (other.size ())
1971 , _timestamp (other.timestamp ())
1974 if (other.size () && other.const_data ()) {
1975 _data = (uint8_t*) malloc (other.size ());
1976 memcpy (_data, other.const_data (), other.size ());
1980 PortMidiEvent::~PortMidiEvent () {