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));
148 PortAudioBackend::driver_name () const
150 std::string driver_name = _pcmio->get_host_api ();
151 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
156 PortAudioBackend::use_separate_input_and_output_devices () const
161 std::vector<AudioBackend::DeviceStatus>
162 PortAudioBackend::enumerate_devices () const
164 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
165 return std::vector<AudioBackend::DeviceStatus>();
168 std::vector<AudioBackend::DeviceStatus>
169 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
187 _output_audio_device_status.clear();
188 std::map<int, std::string> output_devices;
189 _pcmio->output_device_list(output_devices);
191 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
192 if (_output_audio_device == "") _output_audio_device = i->second;
193 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
195 return _output_audio_device_status;
199 PortAudioBackend::available_sample_rates (const std::string&) const
201 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
202 std::vector<float> sr;
203 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
207 std::vector<uint32_t>
208 PortAudioBackend::available_buffer_sizes (const std::string&) const
210 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
211 std::vector<uint32_t> bs;
212 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
217 PortAudioBackend::available_input_channel_count (const std::string&) const
219 return 128; // TODO query current device
223 PortAudioBackend::available_output_channel_count (const std::string&) const
225 return 128; // TODO query current device
229 PortAudioBackend::can_change_sample_rate_when_running () const
235 PortAudioBackend::can_change_buffer_size_when_running () const
237 return false; // TODO
241 PortAudioBackend::set_device_name (const std::string& d)
243 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
248 PortAudioBackend::set_input_device_name (const std::string& d)
250 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
251 _input_audio_device = d;
256 PortAudioBackend::set_output_device_name (const std::string& d)
258 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
259 _output_audio_device = d;
264 PortAudioBackend::set_sample_rate (float sr)
266 if (sr <= 0) { return -1; }
267 // TODO check if it's in the list of valid SR
269 engine.sample_rate_change (sr);
274 PortAudioBackend::set_buffer_size (uint32_t bs)
276 if (bs <= 0 || bs >= _max_buffer_size) {
279 _samples_per_period = bs;
280 engine.buffer_size_change (bs);
285 PortAudioBackend::set_interleaved (bool yn)
287 if (!yn) { return 0; }
292 PortAudioBackend::set_input_channels (uint32_t cc)
299 PortAudioBackend::set_output_channels (uint32_t cc)
306 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
308 _systemic_audio_input_latency = sl;
313 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
315 _systemic_audio_output_latency = sl;
319 /* Retrieving parameters */
321 PortAudioBackend::device_name () const
327 PortAudioBackend::input_device_name () const
329 return _input_audio_device;
333 PortAudioBackend::output_device_name () const
335 return _output_audio_device;
339 PortAudioBackend::sample_rate () const
345 PortAudioBackend::buffer_size () const
347 return _samples_per_period;
351 PortAudioBackend::interleaved () const
357 PortAudioBackend::input_channels () const
363 PortAudioBackend::output_channels () const
369 PortAudioBackend::systemic_input_latency () const
371 return _systemic_audio_input_latency;
375 PortAudioBackend::systemic_output_latency () const
377 return _systemic_audio_output_latency;
381 PortAudioBackend::control_app_name () const
383 return _pcmio->control_app_name (name_to_id (_input_audio_device));
387 PortAudioBackend::launch_control_app ()
389 return _pcmio->launch_control_app (name_to_id(_input_audio_device));
394 std::vector<std::string>
395 PortAudioBackend::enumerate_midi_options () const
397 if (_midi_options.empty()) {
398 _midi_options.push_back (winmme_driver_name);
399 _midi_options.push_back (get_standard_device_name(DeviceNone));
401 return _midi_options;
405 PortAudioBackend::set_midi_option (const std::string& opt)
407 if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
410 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
411 _midi_driver_option = opt;
416 PortAudioBackend::midi_option () const
418 return _midi_driver_option;
423 static void * pthread_process (void *arg)
425 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
426 d->main_process_thread ();
432 PortAudioBackend::_start (bool for_latency_measurement)
434 if (!_active && _run) {
435 // recover from 'halted', reap threads
439 if (_active || _run) {
440 DEBUG_AUDIO("Already active.\n");
446 "Recovering from unclean shutdown, port registry is not empty.\n");
447 _system_inputs.clear();
448 _system_outputs.clear();
449 _system_midi_in.clear();
450 _system_midi_out.clear();
454 /* reset internal state */
456 _freewheeling = false;
459 PortAudioIO::ErrorCode err;
461 err = _pcmio->open_blocking_stream(name_to_id(_input_audio_device),
462 name_to_id(_output_audio_device),
464 _samples_per_period);
467 case PortAudioIO::NoError:
469 case PortAudioIO::DeviceConfigNotSupportedError:
470 PBD::error << get_error_string(DeviceConfigurationNotSupportedError)
474 PBD::error << get_error_string(AudioDeviceOpenError) << endmsg;
478 if (_n_outputs != _pcmio->n_playback_channels ()) {
479 _n_outputs = _pcmio->n_playback_channels ();
480 PBD::info << get_error_string(OutputChannelCountNotSupportedError) << endmsg;
483 if (_n_inputs != _pcmio->n_capture_channels ()) {
484 _n_inputs = _pcmio->n_capture_channels ();
485 PBD::info << get_error_string(InputChannelCountNotSupportedError) << endmsg;
488 if (_pcmio->samples_per_period() != _samples_per_period) {
489 _samples_per_period = _pcmio->samples_per_period();
490 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
494 if (_pcmio->sample_rate() != _samplerate) {
495 _samplerate = _pcmio->sample_rate();
496 engine.sample_rate_change (_samplerate);
497 PBD::warning << get_error_string(SampleRateNotSupportedError) << endmsg;
500 _measure_latency = for_latency_measurement;
503 _port_change_flag = false;
505 if (_midi_driver_option == winmme_driver_name) {
506 _midiio->set_enabled(true);
507 //_midiio->set_port_changed_callback(midi_port_change, this);
508 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
511 m_cycle_timer.set_samplerate(_samplerate);
512 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
514 DEBUG_MIDI ("Registering MIDI ports\n");
516 if (register_system_midi_ports () != 0) {
517 DEBUG_PORTS("Failed to register system midi ports.\n")
522 DEBUG_AUDIO ("Registering Audio ports\n");
524 if (register_system_audio_ports()) {
525 DEBUG_PORTS("Failed to register system audio ports.\n");
530 engine.sample_rate_change (_samplerate);
531 engine.buffer_size_change (_samples_per_period);
533 if (engine.reestablish_ports ()) {
534 DEBUG_PORTS("Could not re-establish ports.\n");
539 engine.reconnect_ports ();
541 _port_change_flag = false;
543 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
544 &_main_thread, pthread_process, this))
546 if (pthread_create (&_main_thread, NULL, pthread_process, this))
548 DEBUG_AUDIO("Failed to create main audio thread\n");
552 PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
557 while (!_active && --timeout > 0) { Glib::usleep (1000); }
559 if (timeout == 0 || !_active) {
560 DEBUG_AUDIO("Failed to start main audio thread\n");
561 _pcmio->close_stream();
572 PortAudioBackend::stop ()
580 if (pthread_join (_main_thread, &status)) {
581 DEBUG_AUDIO("Failed to stop main audio thread\n");
588 return (_active == false) ? 0 : -1;
592 PortAudioBackend::freewheel (bool onoff)
594 if (onoff == _freewheeling) {
597 _freewheeling = onoff;
602 PortAudioBackend::dsp_load () const
604 return 100.f * _dsp_load;
608 PortAudioBackend::raw_buffer_size (DataType t)
611 case DataType::AUDIO:
612 return _samples_per_period * sizeof(Sample);
614 return _max_buffer_size; // XXX not really limited
621 PortAudioBackend::sample_time ()
623 return _processed_samples;
627 PortAudioBackend::sample_time_at_cycle_start ()
629 return _processed_samples;
633 PortAudioBackend::samples_since_cycle_start ()
635 if (!_active || !_run || _freewheeling || _freewheel) {
638 if (!m_cycle_timer.valid()) {
642 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
646 PortAudioBackend::name_to_id(std::string device_name) const {
647 uint32_t device_id = UINT32_MAX;
648 std::map<int, std::string> devices;
649 _pcmio->input_device_list(devices);
650 _pcmio->output_device_list(devices);
652 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
653 if (i->second == device_name) {
654 device_id = i->first;
662 PortAudioBackend::portaudio_process_thread (void *arg)
664 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
665 boost::function<void ()> f = td->f;
668 #ifdef USE_MMCSS_THREAD_PRIORITIES
671 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
672 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
673 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
678 DWORD tid = GetCurrentThreadId ();
679 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
683 #ifdef USE_MMCSS_THREAD_PRIORITIES
684 mmcss::revert_thread_characteristics (task_handle);
691 PortAudioBackend::create_process_thread (boost::function<void()> func)
695 size_t stacksize = 100000;
697 ThreadData* td = new ThreadData (this, func, stacksize);
699 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
700 &thread_id, portaudio_process_thread, td)) {
701 pthread_attr_init (&attr);
702 pthread_attr_setstacksize (&attr, stacksize);
703 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
704 DEBUG_AUDIO("Cannot create process thread.");
705 pthread_attr_destroy (&attr);
708 pthread_attr_destroy (&attr);
711 _threads.push_back (thread_id);
716 PortAudioBackend::join_process_threads ()
720 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
723 if (pthread_join (*i, &status)) {
724 DEBUG_AUDIO("Cannot terminate process thread.");
733 PortAudioBackend::in_process_thread ()
735 if (pthread_equal (_main_thread, pthread_self()) != 0) {
739 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
741 if (pthread_equal (*i, pthread_self ()) != 0) {
749 PortAudioBackend::process_thread_count ()
751 return _threads.size ();
755 PortAudioBackend::update_latencies ()
757 // trigger latency callback in RT thread (locked graph)
758 port_connect_add_remove_callback();
764 PortAudioBackend::private_handle () const
770 PortAudioBackend::my_name () const
772 return _instance_name;
776 PortAudioBackend::available () const
778 return _run && _active;
782 PortAudioBackend::port_name_size () const
788 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
790 if (!valid_port (port)) {
791 DEBUG_PORTS("set_port_name: Invalid Port(s)\n");
794 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
798 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
800 if (!valid_port (port)) {
801 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
802 return std::string ();
804 return static_cast<PamPort*>(port)->name ();
808 PortAudioBackend::get_port_property (PortHandle port,
809 const std::string& key,
811 std::string& type) const
813 if (!valid_port (port)) {
814 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
818 if (key == "http://jackaudio.org/metadata/pretty-name") {
820 value = static_cast<PamPort*>(port)->pretty_name ();
821 if (!value.empty()) {
828 PortEngine::PortHandle
829 PortAudioBackend::get_port_by_name (const std::string& name) const
831 PortHandle port = (PortHandle) find_port (name);
836 PortAudioBackend::get_ports (
837 const std::string& port_name_pattern,
838 DataType type, PortFlags flags,
839 std::vector<std::string>& port_names) const
843 bool use_regexp = false;
844 if (port_name_pattern.size () > 0) {
845 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
849 for (size_t i = 0; i < _ports.size (); ++i) {
850 PamPort* port = _ports[i];
851 if ((port->type () == type) && flags == (port->flags () & flags)) {
852 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
853 port_names.push_back (port->name ());
859 regfree (&port_regex);
865 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
867 if (!valid_port (port)) {
868 return DataType::NIL;
870 return static_cast<PamPort*>(port)->type ();
873 PortEngine::PortHandle
874 PortAudioBackend::register_port (
875 const std::string& name,
876 ARDOUR::DataType type,
877 ARDOUR::PortFlags flags)
879 if (name.size () == 0) { return 0; }
880 if (flags & IsPhysical) { return 0; }
881 return add_port (_instance_name + ":" + name, type, flags);
884 PortEngine::PortHandle
885 PortAudioBackend::add_port (
886 const std::string& name,
887 ARDOUR::DataType type,
888 ARDOUR::PortFlags flags)
890 assert(name.size ());
891 if (find_port (name)) {
893 string_compose("register_port: Port already exists: (%1)\n", name));
896 PamPort* port = NULL;
898 case DataType::AUDIO:
899 port = new PortAudioPort(*this, name, flags);
902 port = new PortMidiPort(*this, name, flags);
905 DEBUG_PORTS("register_port: Invalid Data Type.\n");
909 _ports.push_back (port);
915 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
920 PamPort* port = static_cast<PamPort*>(port_handle);
921 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
922 if (i == _ports.end ()) {
923 DEBUG_PORTS("unregister_port: Failed to find port\n");
926 disconnect_all(port_handle);
932 PortAudioBackend::register_system_audio_ports()
936 const uint32_t a_ins = _n_inputs;
937 const uint32_t a_out = _n_outputs;
939 // XXX PA reported stream latencies don't match measurements
940 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
941 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
944 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
945 for (uint32_t i = 0; i < a_ins; ++i) {
947 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
948 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
950 set_latency_range (p, false, lr);
951 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
952 audio_port->set_pretty_name (
953 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
954 _system_inputs.push_back (audio_port);
957 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
958 for (uint32_t i = 0; i < a_out; ++i) {
960 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
961 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
963 set_latency_range (p, true, lr);
964 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
965 audio_port->set_pretty_name (
966 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
967 _system_outputs.push_back(audio_port);
973 PortAudioBackend::register_system_midi_ports()
975 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
976 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
981 lr.min = lr.max = _samples_per_period;
983 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
985 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
988 std::string port_name = "system_midi:" + (*i)->name() + " capture";
992 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
994 set_latency_range (p, false, lr);
995 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
996 midi_port->set_pretty_name ((*i)->name());
997 _system_midi_in.push_back (midi_port);
998 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
1001 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
1003 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
1004 i != outputs.end ();
1006 std::string port_name = "system_midi:" + (*i)->name() + " playback";
1008 add_port (port_name,
1010 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1012 set_latency_range (p, false, lr);
1013 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1014 midi_port->set_n_periods(2);
1015 midi_port->set_pretty_name ((*i)->name());
1016 _system_midi_out.push_back (midi_port);
1017 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1023 PortAudioBackend::unregister_ports (bool system_only)
1026 _system_inputs.clear();
1027 _system_outputs.clear();
1028 _system_midi_in.clear();
1029 _system_midi_out.clear();
1030 while (i < _ports.size ()) {
1031 PamPort* port = _ports[i];
1032 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1033 port->disconnect_all ();
1035 _ports.erase (_ports.begin() + i);
1043 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1045 PamPort* src_port = find_port (src);
1046 PamPort* dst_port = find_port (dst);
1049 DEBUG_PORTS(string_compose("connect: Invalid Source port: (%1)\n", src));
1053 DEBUG_PORTS(string_compose("connect: Invalid Destination port: (%1)\n", dst));
1056 return src_port->connect (dst_port);
1060 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1062 PamPort* src_port = find_port (src);
1063 PamPort* dst_port = find_port (dst);
1065 if (!src_port || !dst_port) {
1066 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1069 return src_port->disconnect (dst_port);
1073 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1075 PamPort* dst_port = find_port (dst);
1076 if (!valid_port (src)) {
1077 DEBUG_PORTS("connect: Invalid Source Port Handle\n");
1081 DEBUG_PORTS(string_compose("connect: Invalid Destination Port (%1)\n", dst));
1084 return static_cast<PamPort*>(src)->connect (dst_port);
1088 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1090 PamPort* dst_port = find_port (dst);
1091 if (!valid_port (src) || !dst_port) {
1092 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1095 return static_cast<PamPort*>(src)->disconnect (dst_port);
1099 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1101 if (!valid_port (port)) {
1102 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1105 static_cast<PamPort*>(port)->disconnect_all ();
1110 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1112 if (!valid_port (port)) {
1113 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1116 return static_cast<PamPort*>(port)->is_connected ();
1120 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1122 PamPort* dst_port = find_port (dst);
1123 if (!valid_port (src) || !dst_port) {
1124 DEBUG_PORTS("connected_to: Invalid Port\n");
1127 return static_cast<PamPort*>(src)->is_connected (dst_port);
1131 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1133 if (!valid_port (port)) {
1134 DEBUG_PORTS("physically_connected: Invalid Port\n");
1137 return static_cast<PamPort*>(port)->is_physically_connected ();
1141 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1143 if (!valid_port (port)) {
1144 DEBUG_PORTS("get_connections: Invalid Port\n");
1148 assert (0 == names.size ());
1150 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1152 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1153 names.push_back ((*i)->name ());
1156 return (int)names.size ();
1161 PortAudioBackend::midi_event_get (
1162 pframes_t& timestamp,
1163 size_t& size, uint8_t** buf, void* port_buffer,
1164 uint32_t event_index)
1166 if (!buf || !port_buffer) return -1;
1167 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1168 if (event_index >= source.size ()) {
1171 PortMidiEvent * const event = source[event_index].get ();
1173 timestamp = event->timestamp ();
1174 size = event->size ();
1175 *buf = event->data ();
1180 PortAudioBackend::midi_event_put (
1182 pframes_t timestamp,
1183 const uint8_t* buffer, size_t size)
1185 if (!buffer || !port_buffer) return -1;
1186 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1187 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1188 // nevermind, ::get_buffer() sorts events
1189 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1190 (pframes_t)dst.back ()->timestamp (),
1193 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1198 PortAudioBackend::get_midi_event_count (void* port_buffer)
1200 if (!port_buffer) return 0;
1201 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1205 PortAudioBackend::midi_clear (void* port_buffer)
1207 if (!port_buffer) return;
1208 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1216 PortAudioBackend::can_monitor_input () const
1222 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1228 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1234 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1239 /* Latency management */
1242 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1244 if (!valid_port (port)) {
1245 DEBUG_PORTS("PamPort::set_latency_range (): invalid port.\n");
1247 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1251 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1254 if (!valid_port (port)) {
1255 DEBUG_PORTS("PamPort::get_latency_range (): invalid port.\n");
1260 PamPort* p = static_cast<PamPort*>(port);
1263 r = p->latency_range (for_playback);
1265 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1266 if (p->is_input() && for_playback) {
1267 r.min += _samples_per_period;
1268 r.max += _samples_per_period;
1270 if (p->is_output() && !for_playback) {
1271 r.min += _samples_per_period;
1272 r.max += _samples_per_period;
1278 /* Discovering physical ports */
1281 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1283 if (!valid_port (port)) {
1284 DEBUG_PORTS("PamPort::port_is_physical (): invalid port.\n");
1287 return static_cast<PamPort*>(port)->is_physical ();
1291 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1293 for (size_t i = 0; i < _ports.size (); ++i) {
1294 PamPort* port = _ports[i];
1295 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1296 port_names.push_back (port->name ());
1302 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1304 for (size_t i = 0; i < _ports.size (); ++i) {
1305 PamPort* port = _ports[i];
1306 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1307 port_names.push_back (port->name ());
1313 PortAudioBackend::n_physical_outputs () const
1317 for (size_t i = 0; i < _ports.size (); ++i) {
1318 PamPort* port = _ports[i];
1319 if (port->is_output () && port->is_physical ()) {
1320 switch (port->type ()) {
1321 case DataType::AUDIO:
1324 case DataType::MIDI:
1333 cc.set (DataType::AUDIO, n_audio);
1334 cc.set (DataType::MIDI, n_midi);
1339 PortAudioBackend::n_physical_inputs () const
1343 for (size_t i = 0; i < _ports.size (); ++i) {
1344 PamPort* port = _ports[i];
1345 if (port->is_input () && port->is_physical ()) {
1346 switch (port->type ()) {
1347 case DataType::AUDIO:
1350 case DataType::MIDI:
1359 cc.set (DataType::AUDIO, n_audio);
1360 cc.set (DataType::MIDI, n_midi);
1364 /* Getting access to the data buffer for a port */
1367 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1369 if (!port || !valid_port (port)) return NULL;
1370 return static_cast<PamPort*>(port)->get_buffer (nframes);
1375 PortAudioBackend::main_process_thread ()
1377 AudioEngine::thread_init_callback (this);
1379 _processed_samples = 0;
1381 uint64_t clock1, clock2;
1382 int64_t min_elapsed_us = 1000000;
1383 int64_t max_elapsed_us = 0;
1384 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1385 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1387 manager.registration_callback();
1388 manager.graph_order_callback();
1390 if (_pcmio->start_stream() != PortAudioIO::NoError) {
1391 _pcmio->close_stream ();
1393 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1396 #ifdef USE_MMCSS_THREAD_PRIORITIES
1399 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
1400 if (!mmcss::set_thread_priority(task_handle, mmcss::AVRT_PRIORITY_NORMAL)) {
1401 PBD::warning << get_error_string(SettingAudioThreadPriorityError)
1406 DWORD tid = GetCurrentThreadId ();
1407 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1411 if (_freewheeling != _freewheel) {
1412 _freewheel = _freewheeling;
1413 engine.freewheel_callback (_freewheel);
1418 switch (_pcmio->next_cycle (_samples_per_period)) {
1422 DEBUG_AUDIO("PortAudio: Xrun\n");
1426 PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
1431 clock1 = utils::get_microseconds ();
1435 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1436 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1439 /* de-queue incoming midi*/
1441 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1442 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1445 pframes_t sample_offset;
1447 size_t size = sizeof(data);
1448 while (_midiio->dequeue_input_event (i,
1449 m_cycle_timer.get_start (),
1450 m_cycle_timer.get_next_start (),
1454 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1455 midi_event_put (mbuf, sample_offset, data, size);
1456 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1457 "sample_offset: %2 timestamp: %3, size: %4\n",
1458 _midiio->get_inputs ()[i]->name (),
1462 size = sizeof(data);
1466 /* clear output buffers */
1467 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1468 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1471 m_last_cycle_start = m_cycle_timer.get_start ();
1472 m_cycle_timer.reset_start(utils::get_microseconds());
1475 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1476 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1477 m_total_deviation_us += ::llabs(deviation_us);
1478 m_max_deviation_us =
1479 std::max (m_max_deviation_us, (uint64_t)::llabs (deviation_us));
1481 if ((m_cycle_count % 1000) == 0) {
1482 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1484 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1485 mean_deviation_us * 1e-3,
1486 m_max_deviation_us * 1e-3));
1489 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1490 DEBUG_TIMING (string_compose (
1491 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1492 cycle_diff_us * 1e-3,
1493 m_cycle_timer.get_length_us () * 1e-3,
1494 deviation_us * 1e-3));
1497 /* call engine process callback */
1498 if (engine.process_callback (_samples_per_period)) {
1499 _pcmio->close_stream ();
1504 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1505 static_cast<PortMidiPort*>(*it)->next_period();
1507 /* queue outgoing midi */
1509 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1510 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1512 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1513 uint64_t timestamp =
1514 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1516 string_compose ("Queuing outgoing MIDI data for device: "
1517 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1518 _midiio->get_outputs ()[i]->name (),
1519 (*mit)->timestamp (),
1522 _midiio->enqueue_output_event (
1523 i, timestamp, (*mit)->data (), (*mit)->size ());
1527 /* write back audio */
1529 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1530 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1533 _processed_samples += _samples_per_period;
1535 /* calculate DSP load */
1536 clock2 = utils::get_microseconds ();
1537 const int64_t elapsed_time = clock2 - clock1;
1538 _dsp_load = elapsed_time / (float) nomial_time;
1540 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1541 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1542 if ((m_cycle_count % 1000) == 0) {
1544 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1552 // zero audio input buffers
1553 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1554 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1557 clock1 = utils::get_microseconds ();
1559 // TODO clear midi or stop midi recv when entering fwheelin'
1561 if (engine.process_callback (_samples_per_period)) {
1562 _pcmio->close_stream();
1567 // drop all outgoing MIDI messages
1568 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1569 void *bptr = (*it)->get_buffer(0);
1574 Glib::usleep (100); // don't hog cpu
1577 bool connections_changed = false;
1578 bool ports_changed = false;
1579 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1580 if (_port_change_flag) {
1581 ports_changed = true;
1582 _port_change_flag = false;
1584 if (!_port_connection_queue.empty ()) {
1585 connections_changed = true;
1587 while (!_port_connection_queue.empty ()) {
1588 PortConnectData *c = _port_connection_queue.back ();
1589 manager.connect_callback (c->a, c->b, c->c);
1590 _port_connection_queue.pop_back ();
1593 pthread_mutex_unlock (&_port_callback_mutex);
1595 if (ports_changed) {
1596 manager.registration_callback();
1598 if (connections_changed) {
1599 manager.graph_order_callback();
1601 if (connections_changed || ports_changed) {
1602 engine.latency_callback(false);
1603 engine.latency_callback(true);
1607 _pcmio->close_stream();
1610 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1613 #ifdef USE_MMCSS_THREAD_PRIORITIES
1614 mmcss::revert_thread_characteristics (task_handle);
1621 /******************************************************************************/
1623 static boost::shared_ptr<PortAudioBackend> _instance;
1625 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1626 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1627 static int deinstantiate ();
1628 static bool already_configured ();
1629 static bool available ();
1631 static ARDOUR::AudioBackendInfo _descriptor = {
1640 static boost::shared_ptr<AudioBackend>
1641 backend_factory (AudioEngine& e)
1644 _instance.reset (new PortAudioBackend (e, _descriptor));
1650 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1652 s_instance_name = arg1;
1664 already_configured ()
1675 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1677 return &_descriptor;
1681 /******************************************************************************/
1682 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1687 _capture_latency_range.min = 0;
1688 _capture_latency_range.max = 0;
1689 _playback_latency_range.min = 0;
1690 _playback_latency_range.max = 0;
1693 PamPort::~PamPort () {
1698 int PamPort::connect (PamPort *port)
1701 DEBUG_PORTS("PamPort::connect (): invalid (null) port\n");
1705 if (type () != port->type ()) {
1706 DEBUG_PORTS("PamPort::connect (): wrong port-type\n");
1710 if (is_output () && port->is_output ()) {
1711 DEBUG_PORTS("PamPort::connect (): cannot inter-connect output ports.\n");
1715 if (is_input () && port->is_input ()) {
1716 DEBUG_PORTS("PamPort::connect (): cannot inter-connect input ports.\n");
1721 DEBUG_PORTS("PamPort::connect (): cannot self-connect ports.\n");
1725 if (is_connected (port)) {
1726 #if 0 // don't bother to warn about this for now. just ignore it
1727 PBD::error << _("PamPort::connect (): ports are already connected:")
1728 << " (" << name () << ") -> (" << port->name () << ")"
1734 _connect (port, true);
1739 void PamPort::_connect (PamPort *port, bool callback)
1741 _connections.push_back (port);
1743 port->_connect (this, false);
1744 _osx_backend.port_connect_callback (name(), port->name(), true);
1748 int PamPort::disconnect (PamPort *port)
1751 DEBUG_PORTS("PamPort::disconnect (): invalid (null) port\n");
1755 if (!is_connected (port)) {
1756 DEBUG_PORTS(string_compose(
1757 "PamPort::disconnect (): ports are not connected: (%1) -> (%2)\n",
1762 _disconnect (port, true);
1766 void PamPort::_disconnect (PamPort *port, bool callback)
1768 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1770 assert (it != _connections.end ());
1772 _connections.erase (it);
1775 port->_disconnect (this, false);
1776 _osx_backend.port_connect_callback (name(), port->name(), false);
1781 void PamPort::disconnect_all ()
1783 while (!_connections.empty ()) {
1784 _connections.back ()->_disconnect (this, false);
1785 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1786 _connections.pop_back ();
1791 PamPort::is_connected (const PamPort *port) const
1793 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1796 bool PamPort::is_physically_connected () const
1798 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1799 if ((*it)->is_physical ()) {
1806 /******************************************************************************/
1808 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1809 : PamPort (b, name, flags)
1811 memset (_buffer, 0, sizeof (_buffer));
1812 #ifndef PLATFORM_WINDOWS
1813 mlock(_buffer, sizeof (_buffer));
1817 PortAudioPort::~PortAudioPort () { }
1819 void* PortAudioPort::get_buffer (pframes_t n_samples)
1822 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1823 if (it == get_connections ().end ()) {
1824 memset (_buffer, 0, n_samples * sizeof (Sample));
1826 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1827 assert (source && source->is_output ());
1828 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1829 while (++it != get_connections ().end ()) {
1830 source = static_cast<const PortAudioPort*>(*it);
1831 assert (source && source->is_output ());
1832 Sample* dst = buffer ();
1833 const Sample* src = source->const_buffer ();
1834 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1844 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1845 : PamPort (b, name, flags)
1849 _buffer[0].clear ();
1850 _buffer[1].clear ();
1853 PortMidiPort::~PortMidiPort () { }
1855 struct MidiEventSorter {
1856 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1861 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1864 (_buffer[_bufperiod]).clear ();
1865 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1866 i != get_connections ().end ();
1868 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1869 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1870 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1873 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1875 return &(_buffer[_bufperiod]);
1878 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1880 , _timestamp (timestamp)
1884 _data = (uint8_t*) malloc (size);
1885 memcpy (_data, data, size);
1889 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1890 : _size (other.size ())
1891 , _timestamp (other.timestamp ())
1894 if (other.size () && other.const_data ()) {
1895 _data = (uint8_t*) malloc (other.size ());
1896 memcpy (_data, other.const_data (), other.size ());
1900 PortMidiEvent::~PortMidiEvent () {