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::driver_name () const
151 std::string driver_name = _pcmio->get_host_api ();
152 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
157 PortAudioBackend::use_separate_input_and_output_devices () const
162 std::vector<AudioBackend::DeviceStatus>
163 PortAudioBackend::enumerate_devices () const
165 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
166 return std::vector<AudioBackend::DeviceStatus>();
169 std::vector<AudioBackend::DeviceStatus>
170 PortAudioBackend::enumerate_input_devices () const
172 _input_audio_device_status.clear();
173 std::map<int, std::string> input_devices;
174 _pcmio->input_device_list(input_devices);
176 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
177 if (_input_audio_device == "") _input_audio_device = i->second;
178 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
180 return _input_audio_device_status;
183 std::vector<AudioBackend::DeviceStatus>
184 PortAudioBackend::enumerate_output_devices () const
186 _output_audio_device_status.clear();
187 std::map<int, std::string> output_devices;
188 _pcmio->output_device_list(output_devices);
190 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
191 if (_output_audio_device == "") _output_audio_device = i->second;
192 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
194 return _output_audio_device_status;
198 PortAudioBackend::available_sample_rates (const std::string&) const
200 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
201 std::vector<float> sr;
202 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
206 std::vector<uint32_t>
207 PortAudioBackend::available_buffer_sizes (const std::string&) const
209 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
210 std::vector<uint32_t> bs;
211 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
216 PortAudioBackend::available_input_channel_count (const std::string&) const
218 return 128; // TODO query current device
222 PortAudioBackend::available_output_channel_count (const std::string&) const
224 return 128; // TODO query current device
228 PortAudioBackend::can_change_sample_rate_when_running () const
234 PortAudioBackend::can_change_buffer_size_when_running () const
236 return false; // TODO
240 PortAudioBackend::set_device_name (const std::string& d)
242 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
247 PortAudioBackend::set_input_device_name (const std::string& d)
249 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
250 _input_audio_device = d;
255 PortAudioBackend::set_output_device_name (const std::string& d)
257 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
258 _output_audio_device = d;
263 PortAudioBackend::set_sample_rate (float sr)
265 if (sr <= 0) { return -1; }
266 // TODO check if it's in the list of valid SR
268 engine.sample_rate_change (sr);
273 PortAudioBackend::set_buffer_size (uint32_t bs)
275 if (bs <= 0 || bs >= _max_buffer_size) {
278 _samples_per_period = bs;
279 engine.buffer_size_change (bs);
284 PortAudioBackend::set_interleaved (bool yn)
286 if (!yn) { return 0; }
291 PortAudioBackend::set_input_channels (uint32_t cc)
298 PortAudioBackend::set_output_channels (uint32_t cc)
305 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
307 _systemic_audio_input_latency = sl;
312 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
314 _systemic_audio_output_latency = sl;
318 /* Retrieving parameters */
320 PortAudioBackend::device_name () const
326 PortAudioBackend::input_device_name () const
328 return _input_audio_device;
332 PortAudioBackend::output_device_name () const
334 return _output_audio_device;
338 PortAudioBackend::sample_rate () const
344 PortAudioBackend::buffer_size () const
346 return _samples_per_period;
350 PortAudioBackend::interleaved () const
356 PortAudioBackend::input_channels () const
362 PortAudioBackend::output_channels () const
368 PortAudioBackend::systemic_input_latency () const
370 return _systemic_audio_input_latency;
374 PortAudioBackend::systemic_output_latency () const
376 return _systemic_audio_output_latency;
380 PortAudioBackend::control_app_name () const
382 return _pcmio->control_app_name (name_to_id (_input_audio_device));
386 PortAudioBackend::launch_control_app ()
388 return _pcmio->launch_control_app (name_to_id(_input_audio_device));
393 std::vector<std::string>
394 PortAudioBackend::enumerate_midi_options () const
396 if (_midi_options.empty()) {
397 _midi_options.push_back (winmme_driver_name);
398 _midi_options.push_back (get_standard_device_name(DeviceNone));
400 return _midi_options;
404 PortAudioBackend::set_midi_option (const std::string& opt)
406 if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
409 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
410 _midi_driver_option = opt;
415 PortAudioBackend::midi_option () const
417 return _midi_driver_option;
422 static void * pthread_process (void *arg)
424 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
425 d->main_process_thread ();
431 PortAudioBackend::_start (bool for_latency_measurement)
433 if (!_active && _run) {
434 // recover from 'halted', reap threads
438 if (_active || _run) {
439 DEBUG_AUDIO("Already active.\n");
445 "Recovering from unclean shutdown, port registry is not empty.\n");
446 _system_inputs.clear();
447 _system_outputs.clear();
448 _system_midi_in.clear();
449 _system_midi_out.clear();
453 /* reset internal state */
455 _freewheeling = false;
458 PortAudioIO::ErrorCode err;
460 err = _pcmio->open_blocking_stream(name_to_id(_input_audio_device),
461 name_to_id(_output_audio_device),
463 _samples_per_period);
466 case PortAudioIO::NoError:
468 case PortAudioIO::DeviceConfigNotSupportedError:
469 PBD::error << get_error_string(DeviceConfigurationNotSupportedError)
473 PBD::error << get_error_string(AudioDeviceOpenError) << endmsg;
477 if (_n_outputs != _pcmio->n_playback_channels ()) {
478 _n_outputs = _pcmio->n_playback_channels ();
479 PBD::info << get_error_string(OutputChannelCountNotSupportedError) << endmsg;
482 if (_n_inputs != _pcmio->n_capture_channels ()) {
483 _n_inputs = _pcmio->n_capture_channels ();
484 PBD::info << get_error_string(InputChannelCountNotSupportedError) << endmsg;
487 if (_pcmio->samples_per_period() != _samples_per_period) {
488 _samples_per_period = _pcmio->samples_per_period();
489 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
493 if (_pcmio->sample_rate() != _samplerate) {
494 _samplerate = _pcmio->sample_rate();
495 engine.sample_rate_change (_samplerate);
496 PBD::warning << get_error_string(SampleRateNotSupportedError) << endmsg;
499 _measure_latency = for_latency_measurement;
502 _port_change_flag = false;
504 if (_midi_driver_option == winmme_driver_name) {
505 _midiio->set_enabled(true);
506 //_midiio->set_port_changed_callback(midi_port_change, this);
507 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
510 m_cycle_timer.set_samplerate(_samplerate);
511 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
513 DEBUG_MIDI ("Registering MIDI ports\n");
515 if (register_system_midi_ports () != 0) {
516 DEBUG_PORTS("Failed to register system midi ports.\n")
521 DEBUG_AUDIO ("Registering Audio ports\n");
523 if (register_system_audio_ports()) {
524 DEBUG_PORTS("Failed to register system audio ports.\n");
529 engine.sample_rate_change (_samplerate);
530 engine.buffer_size_change (_samples_per_period);
532 if (engine.reestablish_ports ()) {
533 DEBUG_PORTS("Could not re-establish ports.\n");
538 engine.reconnect_ports ();
540 _port_change_flag = false;
542 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
543 &_main_thread, pthread_process, this))
545 if (pthread_create (&_main_thread, NULL, pthread_process, this))
547 DEBUG_AUDIO("Failed to create main audio thread\n");
551 PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
556 while (!_active && --timeout > 0) { Glib::usleep (1000); }
558 if (timeout == 0 || !_active) {
559 DEBUG_AUDIO("Failed to start main audio thread\n");
560 _pcmio->close_stream();
571 PortAudioBackend::stop ()
579 if (pthread_join (_main_thread, &status)) {
580 DEBUG_AUDIO("Failed to stop main audio thread\n");
587 return (_active == false) ? 0 : -1;
591 PortAudioBackend::freewheel (bool onoff)
593 if (onoff == _freewheeling) {
596 _freewheeling = onoff;
601 PortAudioBackend::dsp_load () const
603 return 100.f * _dsp_load;
607 PortAudioBackend::raw_buffer_size (DataType t)
610 case DataType::AUDIO:
611 return _samples_per_period * sizeof(Sample);
613 return _max_buffer_size; // XXX not really limited
620 PortAudioBackend::sample_time ()
622 return _processed_samples;
626 PortAudioBackend::sample_time_at_cycle_start ()
628 return _processed_samples;
632 PortAudioBackend::samples_since_cycle_start ()
634 if (!_active || !_run || _freewheeling || _freewheel) {
637 if (!m_cycle_timer.valid()) {
641 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
645 PortAudioBackend::name_to_id(std::string device_name) const {
646 uint32_t device_id = UINT32_MAX;
647 std::map<int, std::string> devices;
648 _pcmio->input_device_list(devices);
649 _pcmio->output_device_list(devices);
651 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
652 if (i->second == device_name) {
653 device_id = i->first;
661 PortAudioBackend::portaudio_process_thread (void *arg)
663 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
664 boost::function<void ()> f = td->f;
667 #ifdef USE_MMCSS_THREAD_PRIORITIES
670 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
671 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
672 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
677 DWORD tid = GetCurrentThreadId ();
678 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
682 #ifdef USE_MMCSS_THREAD_PRIORITIES
683 mmcss::revert_thread_characteristics (task_handle);
690 PortAudioBackend::create_process_thread (boost::function<void()> func)
694 size_t stacksize = 100000;
696 ThreadData* td = new ThreadData (this, func, stacksize);
698 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
699 &thread_id, portaudio_process_thread, td)) {
700 pthread_attr_init (&attr);
701 pthread_attr_setstacksize (&attr, stacksize);
702 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
703 DEBUG_AUDIO("Cannot create process thread.");
704 pthread_attr_destroy (&attr);
707 pthread_attr_destroy (&attr);
710 _threads.push_back (thread_id);
715 PortAudioBackend::join_process_threads ()
719 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
722 if (pthread_join (*i, &status)) {
723 DEBUG_AUDIO("Cannot terminate process thread.");
732 PortAudioBackend::in_process_thread ()
734 if (pthread_equal (_main_thread, pthread_self()) != 0) {
738 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
740 if (pthread_equal (*i, pthread_self ()) != 0) {
748 PortAudioBackend::process_thread_count ()
750 return _threads.size ();
754 PortAudioBackend::update_latencies ()
756 // trigger latency callback in RT thread (locked graph)
757 port_connect_add_remove_callback();
763 PortAudioBackend::private_handle () const
769 PortAudioBackend::my_name () const
771 return _instance_name;
775 PortAudioBackend::available () const
777 return _run && _active;
781 PortAudioBackend::port_name_size () const
787 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
789 if (!valid_port (port)) {
790 DEBUG_PORTS("set_port_name: Invalid Port(s)\n");
793 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
797 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
799 if (!valid_port (port)) {
800 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
801 return std::string ();
803 return static_cast<PamPort*>(port)->name ();
807 PortAudioBackend::get_port_property (PortHandle port,
808 const std::string& key,
810 std::string& type) const
812 if (!valid_port (port)) {
813 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
817 if (key == "http://jackaudio.org/metadata/pretty-name") {
819 value = static_cast<PamPort*>(port)->pretty_name ();
820 if (!value.empty()) {
827 PortEngine::PortHandle
828 PortAudioBackend::get_port_by_name (const std::string& name) const
830 PortHandle port = (PortHandle) find_port (name);
835 PortAudioBackend::get_ports (
836 const std::string& port_name_pattern,
837 DataType type, PortFlags flags,
838 std::vector<std::string>& port_names) const
842 bool use_regexp = false;
843 if (port_name_pattern.size () > 0) {
844 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
848 for (size_t i = 0; i < _ports.size (); ++i) {
849 PamPort* port = _ports[i];
850 if ((port->type () == type) && flags == (port->flags () & flags)) {
851 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
852 port_names.push_back (port->name ());
858 regfree (&port_regex);
864 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
866 if (!valid_port (port)) {
867 return DataType::NIL;
869 return static_cast<PamPort*>(port)->type ();
872 PortEngine::PortHandle
873 PortAudioBackend::register_port (
874 const std::string& name,
875 ARDOUR::DataType type,
876 ARDOUR::PortFlags flags)
878 if (name.size () == 0) { return 0; }
879 if (flags & IsPhysical) { return 0; }
880 return add_port (_instance_name + ":" + name, type, flags);
883 PortEngine::PortHandle
884 PortAudioBackend::add_port (
885 const std::string& name,
886 ARDOUR::DataType type,
887 ARDOUR::PortFlags flags)
889 assert(name.size ());
890 if (find_port (name)) {
892 string_compose("register_port: Port already exists: (%1)\n", name));
895 PamPort* port = NULL;
897 case DataType::AUDIO:
898 port = new PortAudioPort(*this, name, flags);
901 port = new PortMidiPort(*this, name, flags);
904 DEBUG_PORTS("register_port: Invalid Data Type.\n");
908 _ports.push_back (port);
914 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
919 PamPort* port = static_cast<PamPort*>(port_handle);
920 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
921 if (i == _ports.end ()) {
922 DEBUG_PORTS("unregister_port: Failed to find port\n");
925 disconnect_all(port_handle);
931 PortAudioBackend::register_system_audio_ports()
935 const uint32_t a_ins = _n_inputs;
936 const uint32_t a_out = _n_outputs;
938 // XXX PA reported stream latencies don't match measurements
939 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
940 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
943 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
944 for (uint32_t i = 0; i < a_ins; ++i) {
946 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
947 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
949 set_latency_range (p, false, lr);
950 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
951 audio_port->set_pretty_name (
952 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
953 _system_inputs.push_back (audio_port);
956 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
957 for (uint32_t i = 0; i < a_out; ++i) {
959 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
960 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
962 set_latency_range (p, true, lr);
963 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
964 audio_port->set_pretty_name (
965 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
966 _system_outputs.push_back(audio_port);
972 PortAudioBackend::register_system_midi_ports()
974 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
975 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
980 lr.min = lr.max = _samples_per_period;
982 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
984 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
987 std::string port_name = "system_midi:" + (*i)->name() + " capture";
991 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
993 set_latency_range (p, false, lr);
994 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
995 midi_port->set_pretty_name ((*i)->name());
996 _system_midi_in.push_back (midi_port);
997 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
1000 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
1002 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
1003 i != outputs.end ();
1005 std::string port_name = "system_midi:" + (*i)->name() + " playback";
1007 add_port (port_name,
1009 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1011 set_latency_range (p, false, lr);
1012 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1013 midi_port->set_n_periods(2);
1014 midi_port->set_pretty_name ((*i)->name());
1015 _system_midi_out.push_back (midi_port);
1016 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1022 PortAudioBackend::unregister_ports (bool system_only)
1025 _system_inputs.clear();
1026 _system_outputs.clear();
1027 _system_midi_in.clear();
1028 _system_midi_out.clear();
1029 while (i < _ports.size ()) {
1030 PamPort* port = _ports[i];
1031 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1032 port->disconnect_all ();
1034 _ports.erase (_ports.begin() + i);
1042 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1044 PamPort* src_port = find_port (src);
1045 PamPort* dst_port = find_port (dst);
1048 DEBUG_PORTS(string_compose("connect: Invalid Source port: (%1)\n", src));
1052 DEBUG_PORTS(string_compose("connect: Invalid Destination port: (%1)\n", dst));
1055 return src_port->connect (dst_port);
1059 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1061 PamPort* src_port = find_port (src);
1062 PamPort* dst_port = find_port (dst);
1064 if (!src_port || !dst_port) {
1065 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1068 return src_port->disconnect (dst_port);
1072 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1074 PamPort* dst_port = find_port (dst);
1075 if (!valid_port (src)) {
1076 DEBUG_PORTS("connect: Invalid Source Port Handle\n");
1080 DEBUG_PORTS(string_compose("connect: Invalid Destination Port (%1)\n", dst));
1083 return static_cast<PamPort*>(src)->connect (dst_port);
1087 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1089 PamPort* dst_port = find_port (dst);
1090 if (!valid_port (src) || !dst_port) {
1091 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1094 return static_cast<PamPort*>(src)->disconnect (dst_port);
1098 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1100 if (!valid_port (port)) {
1101 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1104 static_cast<PamPort*>(port)->disconnect_all ();
1109 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1111 if (!valid_port (port)) {
1112 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1115 return static_cast<PamPort*>(port)->is_connected ();
1119 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1121 PamPort* dst_port = find_port (dst);
1122 if (!valid_port (src) || !dst_port) {
1123 DEBUG_PORTS("connected_to: Invalid Port\n");
1126 return static_cast<PamPort*>(src)->is_connected (dst_port);
1130 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1132 if (!valid_port (port)) {
1133 DEBUG_PORTS("physically_connected: Invalid Port\n");
1136 return static_cast<PamPort*>(port)->is_physically_connected ();
1140 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1142 if (!valid_port (port)) {
1143 DEBUG_PORTS("get_connections: Invalid Port\n");
1147 assert (0 == names.size ());
1149 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1151 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1152 names.push_back ((*i)->name ());
1155 return (int)names.size ();
1160 PortAudioBackend::midi_event_get (
1161 pframes_t& timestamp,
1162 size_t& size, uint8_t** buf, void* port_buffer,
1163 uint32_t event_index)
1165 if (!buf || !port_buffer) return -1;
1166 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1167 if (event_index >= source.size ()) {
1170 PortMidiEvent * const event = source[event_index].get ();
1172 timestamp = event->timestamp ();
1173 size = event->size ();
1174 *buf = event->data ();
1179 PortAudioBackend::midi_event_put (
1181 pframes_t timestamp,
1182 const uint8_t* buffer, size_t size)
1184 if (!buffer || !port_buffer) return -1;
1185 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1186 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1187 // nevermind, ::get_buffer() sorts events
1188 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1189 (pframes_t)dst.back ()->timestamp (),
1192 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1197 PortAudioBackend::get_midi_event_count (void* port_buffer)
1199 if (!port_buffer) return 0;
1200 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1204 PortAudioBackend::midi_clear (void* port_buffer)
1206 if (!port_buffer) return;
1207 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1215 PortAudioBackend::can_monitor_input () const
1221 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1227 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1233 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1238 /* Latency management */
1241 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1243 if (!valid_port (port)) {
1244 DEBUG_PORTS("PamPort::set_latency_range (): invalid port.\n");
1246 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1250 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1253 if (!valid_port (port)) {
1254 DEBUG_PORTS("PamPort::get_latency_range (): invalid port.\n");
1259 PamPort* p = static_cast<PamPort*>(port);
1262 r = p->latency_range (for_playback);
1264 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1265 if (p->is_input() && for_playback) {
1266 r.min += _samples_per_period;
1267 r.max += _samples_per_period;
1269 if (p->is_output() && !for_playback) {
1270 r.min += _samples_per_period;
1271 r.max += _samples_per_period;
1277 /* Discovering physical ports */
1280 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1282 if (!valid_port (port)) {
1283 DEBUG_PORTS("PamPort::port_is_physical (): invalid port.\n");
1286 return static_cast<PamPort*>(port)->is_physical ();
1290 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1292 for (size_t i = 0; i < _ports.size (); ++i) {
1293 PamPort* port = _ports[i];
1294 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1295 port_names.push_back (port->name ());
1301 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1303 for (size_t i = 0; i < _ports.size (); ++i) {
1304 PamPort* port = _ports[i];
1305 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1306 port_names.push_back (port->name ());
1312 PortAudioBackend::n_physical_outputs () const
1316 for (size_t i = 0; i < _ports.size (); ++i) {
1317 PamPort* port = _ports[i];
1318 if (port->is_output () && port->is_physical ()) {
1319 switch (port->type ()) {
1320 case DataType::AUDIO:
1323 case DataType::MIDI:
1332 cc.set (DataType::AUDIO, n_audio);
1333 cc.set (DataType::MIDI, n_midi);
1338 PortAudioBackend::n_physical_inputs () const
1342 for (size_t i = 0; i < _ports.size (); ++i) {
1343 PamPort* port = _ports[i];
1344 if (port->is_input () && port->is_physical ()) {
1345 switch (port->type ()) {
1346 case DataType::AUDIO:
1349 case DataType::MIDI:
1358 cc.set (DataType::AUDIO, n_audio);
1359 cc.set (DataType::MIDI, n_midi);
1363 /* Getting access to the data buffer for a port */
1366 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1368 if (!port || !valid_port (port)) return NULL;
1369 return static_cast<PamPort*>(port)->get_buffer (nframes);
1374 PortAudioBackend::main_process_thread ()
1376 AudioEngine::thread_init_callback (this);
1378 _processed_samples = 0;
1380 uint64_t clock1, clock2;
1381 int64_t min_elapsed_us = 1000000;
1382 int64_t max_elapsed_us = 0;
1383 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1384 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1386 manager.registration_callback();
1387 manager.graph_order_callback();
1389 if (_pcmio->start_stream() != PortAudioIO::NoError) {
1390 _pcmio->close_stream ();
1392 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1395 #ifdef USE_MMCSS_THREAD_PRIORITIES
1398 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
1399 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
1400 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
1405 DWORD tid = GetCurrentThreadId ();
1406 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1410 if (_freewheeling != _freewheel) {
1411 _freewheel = _freewheeling;
1412 engine.freewheel_callback (_freewheel);
1417 switch (_pcmio->next_cycle (_samples_per_period)) {
1421 DEBUG_AUDIO("PortAudio: Xrun\n");
1425 PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
1430 clock1 = utils::get_microseconds ();
1434 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1435 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1438 /* de-queue incoming midi*/
1440 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1441 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1444 pframes_t sample_offset;
1446 size_t size = sizeof(data);
1447 while (_midiio->dequeue_input_event (i,
1448 m_cycle_timer.get_start (),
1449 m_cycle_timer.get_next_start (),
1453 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1454 midi_event_put (mbuf, sample_offset, data, size);
1455 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1456 "sample_offset: %2 timestamp: %3, size: %4\n",
1457 _midiio->get_inputs ()[i]->name (),
1461 size = sizeof(data);
1465 /* clear output buffers */
1466 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1467 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1470 m_last_cycle_start = m_cycle_timer.get_start ();
1471 m_cycle_timer.reset_start(utils::get_microseconds());
1474 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1475 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1476 m_total_deviation_us += ::llabs(deviation_us);
1477 m_max_deviation_us =
1478 std::max (m_max_deviation_us, (uint64_t)::llabs (deviation_us));
1480 if ((m_cycle_count % 1000) == 0) {
1481 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1483 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1484 mean_deviation_us * 1e-3,
1485 m_max_deviation_us * 1e-3));
1488 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1489 DEBUG_TIMING (string_compose (
1490 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1491 cycle_diff_us * 1e-3,
1492 m_cycle_timer.get_length_us () * 1e-3,
1493 deviation_us * 1e-3));
1496 /* call engine process callback */
1497 if (engine.process_callback (_samples_per_period)) {
1498 _pcmio->close_stream ();
1503 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1504 static_cast<PortMidiPort*>(*it)->next_period();
1506 /* queue outgoing midi */
1508 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1509 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1511 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1512 uint64_t timestamp =
1513 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1515 string_compose ("Queuing outgoing MIDI data for device: "
1516 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1517 _midiio->get_outputs ()[i]->name (),
1518 (*mit)->timestamp (),
1521 _midiio->enqueue_output_event (
1522 i, timestamp, (*mit)->data (), (*mit)->size ());
1526 /* write back audio */
1528 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1529 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1532 _processed_samples += _samples_per_period;
1534 /* calculate DSP load */
1535 clock2 = utils::get_microseconds ();
1536 const int64_t elapsed_time = clock2 - clock1;
1537 _dsp_load = elapsed_time / (float) nomial_time;
1539 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1540 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1541 if ((m_cycle_count % 1000) == 0) {
1543 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1551 // zero audio input buffers
1552 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1553 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1556 clock1 = utils::get_microseconds ();
1558 // TODO clear midi or stop midi recv when entering fwheelin'
1560 if (engine.process_callback (_samples_per_period)) {
1561 _pcmio->close_stream();
1566 // drop all outgoing MIDI messages
1567 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1568 void *bptr = (*it)->get_buffer(0);
1573 Glib::usleep (100); // don't hog cpu
1576 bool connections_changed = false;
1577 bool ports_changed = false;
1578 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1579 if (_port_change_flag) {
1580 ports_changed = true;
1581 _port_change_flag = false;
1583 if (!_port_connection_queue.empty ()) {
1584 connections_changed = true;
1586 while (!_port_connection_queue.empty ()) {
1587 PortConnectData *c = _port_connection_queue.back ();
1588 manager.connect_callback (c->a, c->b, c->c);
1589 _port_connection_queue.pop_back ();
1592 pthread_mutex_unlock (&_port_callback_mutex);
1594 if (ports_changed) {
1595 manager.registration_callback();
1597 if (connections_changed) {
1598 manager.graph_order_callback();
1600 if (connections_changed || ports_changed) {
1601 engine.latency_callback(false);
1602 engine.latency_callback(true);
1606 _pcmio->close_stream();
1609 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1612 #ifdef USE_MMCSS_THREAD_PRIORITIES
1613 mmcss::revert_thread_characteristics (task_handle);
1620 /******************************************************************************/
1622 static boost::shared_ptr<PortAudioBackend> _instance;
1624 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1625 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1626 static int deinstantiate ();
1627 static bool already_configured ();
1628 static bool available ();
1630 static ARDOUR::AudioBackendInfo _descriptor = {
1639 static boost::shared_ptr<AudioBackend>
1640 backend_factory (AudioEngine& e)
1643 _instance.reset (new PortAudioBackend (e, _descriptor));
1649 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1651 s_instance_name = arg1;
1663 already_configured ()
1674 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1676 return &_descriptor;
1680 /******************************************************************************/
1681 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1686 _capture_latency_range.min = 0;
1687 _capture_latency_range.max = 0;
1688 _playback_latency_range.min = 0;
1689 _playback_latency_range.max = 0;
1692 PamPort::~PamPort () {
1697 int PamPort::connect (PamPort *port)
1700 DEBUG_PORTS("PamPort::connect (): invalid (null) port\n");
1704 if (type () != port->type ()) {
1705 DEBUG_PORTS("PamPort::connect (): wrong port-type\n");
1709 if (is_output () && port->is_output ()) {
1710 DEBUG_PORTS("PamPort::connect (): cannot inter-connect output ports.\n");
1714 if (is_input () && port->is_input ()) {
1715 DEBUG_PORTS("PamPort::connect (): cannot inter-connect input ports.\n");
1720 DEBUG_PORTS("PamPort::connect (): cannot self-connect ports.\n");
1724 if (is_connected (port)) {
1725 #if 0 // don't bother to warn about this for now. just ignore it
1726 PBD::error << _("PamPort::connect (): ports are already connected:")
1727 << " (" << name () << ") -> (" << port->name () << ")"
1733 _connect (port, true);
1738 void PamPort::_connect (PamPort *port, bool callback)
1740 _connections.push_back (port);
1742 port->_connect (this, false);
1743 _osx_backend.port_connect_callback (name(), port->name(), true);
1747 int PamPort::disconnect (PamPort *port)
1750 DEBUG_PORTS("PamPort::disconnect (): invalid (null) port\n");
1754 if (!is_connected (port)) {
1755 DEBUG_PORTS(string_compose(
1756 "PamPort::disconnect (): ports are not connected: (%1) -> (%2)\n",
1761 _disconnect (port, true);
1765 void PamPort::_disconnect (PamPort *port, bool callback)
1767 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1769 assert (it != _connections.end ());
1771 _connections.erase (it);
1774 port->_disconnect (this, false);
1775 _osx_backend.port_connect_callback (name(), port->name(), false);
1780 void PamPort::disconnect_all ()
1782 while (!_connections.empty ()) {
1783 _connections.back ()->_disconnect (this, false);
1784 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1785 _connections.pop_back ();
1790 PamPort::is_connected (const PamPort *port) const
1792 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1795 bool PamPort::is_physically_connected () const
1797 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1798 if ((*it)->is_physical ()) {
1805 /******************************************************************************/
1807 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1808 : PamPort (b, name, flags)
1810 memset (_buffer, 0, sizeof (_buffer));
1811 #ifndef PLATFORM_WINDOWS
1812 mlock(_buffer, sizeof (_buffer));
1816 PortAudioPort::~PortAudioPort () { }
1818 void* PortAudioPort::get_buffer (pframes_t n_samples)
1821 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1822 if (it == get_connections ().end ()) {
1823 memset (_buffer, 0, n_samples * sizeof (Sample));
1825 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1826 assert (source && source->is_output ());
1827 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1828 while (++it != get_connections ().end ()) {
1829 source = static_cast<const PortAudioPort*>(*it);
1830 assert (source && source->is_output ());
1831 Sample* dst = buffer ();
1832 const Sample* src = source->const_buffer ();
1833 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1843 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1844 : PamPort (b, name, flags)
1848 _buffer[0].clear ();
1849 _buffer[1].clear ();
1852 PortMidiPort::~PortMidiPort () { }
1854 struct MidiEventSorter {
1855 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1860 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1863 (_buffer[_bufperiod]).clear ();
1864 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1865 i != get_connections ().end ();
1867 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1868 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1869 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1872 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1874 return &(_buffer[_bufperiod]);
1877 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1879 , _timestamp (timestamp)
1883 _data = (uint8_t*) malloc (size);
1884 memcpy (_data, data, size);
1888 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1889 : _size (other.size ())
1890 , _timestamp (other.timestamp ())
1893 if (other.size () && other.const_data ()) {
1894 _data = (uint8_t*) malloc (other.size ());
1895 memcpy (_data, other.const_data (), other.size ());
1899 PortMidiEvent::~PortMidiEvent () {