2 * Copyright (C) 2015-2015 Robin Gareus <robin@gareus.org>
3 * Copyright (C) 2013 Paul Davis
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #ifndef PLATFORM_WINDOWS
29 #include "portaudio_backend.h"
30 #include "rt_thread.h"
32 #include "pbd/compose.h"
33 #include "pbd/error.h"
34 #include "pbd/file_utils.h"
35 #include "ardour/filesystem_paths.h"
36 #include "ardour/port_manager.h"
39 #include "win_utils.h"
44 using namespace ARDOUR;
48 const char * const winmme_driver_name = X_("WinMME");
52 static std::string s_instance_name;
53 size_t PortAudioBackend::_max_buffer_size = 8192;
54 std::vector<std::string> PortAudioBackend::_midi_options;
55 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_input_audio_device_status;
56 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_output_audio_device_status;
58 PortAudioBackend::PortAudioBackend (AudioEngine& e, AudioBackendInfo& info)
59 : AudioBackend (e, info)
64 , _measure_latency (false)
66 , m_total_deviation_us(0)
67 , m_max_deviation_us(0)
68 , _input_audio_device("")
69 , _output_audio_device("")
70 , _midi_driver_option(_("None"))
72 , _samples_per_period (1024)
75 , _systemic_audio_input_latency (0)
76 , _systemic_audio_output_latency (0)
78 , _processed_samples (0)
79 , _port_change_flag (false)
81 _instance_name = s_instance_name;
82 pthread_mutex_init (&_port_callback_mutex, 0);
86 _pcmio = new PortAudioIO ();
87 _midiio = new WinMMEMidiIO ();
90 PortAudioBackend::~PortAudioBackend ()
92 delete _pcmio; _pcmio = 0;
93 delete _midiio; _midiio = 0;
95 mmcss::deinitialize ();
97 pthread_mutex_destroy (&_port_callback_mutex);
100 /* AUDIOBACKEND API */
103 PortAudioBackend::name () const
105 return X_("PortAudio");
109 PortAudioBackend::is_realtime () const
115 PortAudioBackend::requires_driver_selection() const
117 // we could do this but implementation would need changing
119 if (enumerate_drivers().size() == 1) {
126 std::vector<std::string>
127 PortAudioBackend::enumerate_drivers () const
129 DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
130 std::vector<std::string> currently_available;
131 _pcmio->host_api_list (currently_available);
132 return currently_available;
136 PortAudioBackend::set_driver (const std::string& name)
138 DEBUG_AUDIO (string_compose ("Portaudio: set_driver %1 \n", name));
139 if (!_pcmio->set_host_api (name)) {
140 DEBUG_AUDIO (string_compose ("Portaudio: Unable to set_driver %1 \n", name));
147 PortAudioBackend::driver_name () const
149 std::string driver_name = _pcmio->get_host_api ();
150 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
155 PortAudioBackend::use_separate_input_and_output_devices () const
160 std::vector<AudioBackend::DeviceStatus>
161 PortAudioBackend::enumerate_devices () const
163 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
164 return std::vector<AudioBackend::DeviceStatus>();
167 std::vector<AudioBackend::DeviceStatus>
168 PortAudioBackend::enumerate_input_devices () const
171 _input_audio_device_status.clear();
172 std::map<int, std::string> input_devices;
173 _pcmio->input_device_list(input_devices);
175 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
176 if (_input_audio_device == "") _input_audio_device = i->second;
177 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
179 return _input_audio_device_status;
182 std::vector<AudioBackend::DeviceStatus>
183 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;
381 std::vector<std::string>
382 PortAudioBackend::enumerate_midi_options () const
384 if (_midi_options.empty()) {
385 _midi_options.push_back (winmme_driver_name);
386 _midi_options.push_back (_("None"));
388 return _midi_options;
392 PortAudioBackend::set_midi_option (const std::string& opt)
394 if (opt != _("None") && opt != winmme_driver_name) {
397 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
398 _midi_driver_option = opt;
403 PortAudioBackend::midi_option () const
405 return _midi_driver_option;
410 static void * pthread_process (void *arg)
412 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
413 d->main_process_thread ();
419 PortAudioBackend::_start (bool for_latency_measurement)
421 if (!_active && _run) {
422 // recover from 'halted', reap threads
426 if (_active || _run) {
427 PBD::error << _("PortAudioBackend: already active.") << endmsg;
432 PBD::warning << _("PortAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
433 _system_inputs.clear();
434 _system_outputs.clear();
435 _system_midi_in.clear();
436 _system_midi_out.clear();
440 /* reset internal state */
442 _freewheeling = false;
445 _pcmio->pcm_setup (name_to_id(_input_audio_device), name_to_id(_output_audio_device), _samplerate, _samples_per_period);
447 switch (_pcmio->state ()) {
448 case 0: /* OK */ break;
449 case -1: PBD::error << _("PortAudioBackend: failed to open device.") << endmsg; break;
450 default: PBD::error << _("PortAudioBackend: initialization failed.") << endmsg; break;
452 if (_pcmio->state ()) {
456 if (_n_outputs != _pcmio->n_playback_channels ()) {
457 _n_outputs = _pcmio->n_playback_channels ();
458 PBD::info << _("PortAudioBackend: adjusted output channel count to match device.") << endmsg;
461 if (_n_inputs != _pcmio->n_capture_channels ()) {
462 _n_inputs = _pcmio->n_capture_channels ();
463 PBD::info << _("PortAudioBackend: adjusted input channel count to match device.") << endmsg;
466 if (_pcmio->samples_per_period() != _samples_per_period) {
467 _samples_per_period = _pcmio->samples_per_period();
468 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
472 if (_pcmio->sample_rate() != _samplerate) {
473 _samplerate = _pcmio->sample_rate();
474 engine.sample_rate_change (_samplerate);
475 PBD::warning << _("PortAudioBackend: sample rate does not match.") << endmsg;
478 _measure_latency = for_latency_measurement;
481 _port_change_flag = false;
483 if (_midi_driver_option == winmme_driver_name) {
484 _midiio->set_enabled(true);
485 //_midiio->set_port_changed_callback(midi_port_change, this);
486 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
489 m_cycle_timer.set_samplerate(_samplerate);
490 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
492 DEBUG_MIDI ("Registering MIDI ports\n");
494 if (register_system_midi_ports () != 0) {
495 PBD::error << _ ("PortAudioBackend: failed to register system midi ports.")
501 DEBUG_AUDIO ("Registering Audio ports\n");
503 if (register_system_audio_ports()) {
504 PBD::error << _("PortAudioBackend: failed to register system audio ports.") << endmsg;
509 engine.sample_rate_change (_samplerate);
510 engine.buffer_size_change (_samples_per_period);
512 if (engine.reestablish_ports ()) {
513 PBD::error << _("PortAudioBackend: Could not re-establish ports.") << endmsg;
518 engine.reconnect_ports ();
520 _port_change_flag = false;
522 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
523 &_main_thread, pthread_process, this))
525 if (pthread_create (&_main_thread, NULL, pthread_process, this))
527 PBD::error << _("PortAudioBackend: failed to create process thread.") << endmsg;
531 PBD::warning << _("PortAudioBackend: cannot acquire realtime permissions.") << endmsg;
536 while (!_active && --timeout > 0) { Glib::usleep (1000); }
538 if (timeout == 0 || !_active) {
539 PBD::error << _("PortAudioBackend: failed to start.") << endmsg;
551 PortAudioBackend::stop ()
559 if (pthread_join (_main_thread, &status)) {
560 PBD::error << _("PortAudioBackend: failed to terminate.") << endmsg;
567 return (_active == false) ? 0 : -1;
571 PortAudioBackend::freewheel (bool onoff)
573 if (onoff == _freewheeling) {
576 _freewheeling = onoff;
581 PortAudioBackend::dsp_load () const
583 return 100.f * _dsp_load;
587 PortAudioBackend::raw_buffer_size (DataType t)
590 case DataType::AUDIO:
591 return _samples_per_period * sizeof(Sample);
593 return _max_buffer_size; // XXX not really limited
600 PortAudioBackend::sample_time ()
602 return _processed_samples;
606 PortAudioBackend::sample_time_at_cycle_start ()
608 return _processed_samples;
612 PortAudioBackend::samples_since_cycle_start ()
614 if (!_active || !_run || _freewheeling || _freewheel) {
617 if (!m_cycle_timer.valid()) {
621 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
625 PortAudioBackend::name_to_id(std::string device_name) const {
626 uint32_t device_id = UINT32_MAX;
627 std::map<int, std::string> devices;
628 _pcmio->input_device_list(devices);
629 _pcmio->output_device_list(devices);
631 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
632 if (i->second == device_name) {
633 device_id = i->first;
641 PortAudioBackend::portaudio_process_thread (void *arg)
643 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
644 boost::function<void ()> f = td->f;
647 #ifdef USE_MMCSS_THREAD_PRIORITIES
650 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
651 mmcss::set_thread_priority (task_handle, mmcss::AVRT_PRIORITY_NORMAL);
654 DWORD tid = GetThreadId (GetCurrentThread ());
655 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
659 #ifdef USE_MMCSS_THREAD_PRIORITIES
660 mmcss::revert_thread_characteristics (task_handle);
667 PortAudioBackend::create_process_thread (boost::function<void()> func)
671 size_t stacksize = 100000;
673 ThreadData* td = new ThreadData (this, func, stacksize);
675 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
676 &thread_id, portaudio_process_thread, td)) {
677 pthread_attr_init (&attr);
678 pthread_attr_setstacksize (&attr, stacksize);
679 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
680 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
681 pthread_attr_destroy (&attr);
684 pthread_attr_destroy (&attr);
687 _threads.push_back (thread_id);
692 PortAudioBackend::join_process_threads ()
696 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
699 if (pthread_join (*i, &status)) {
700 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
709 PortAudioBackend::in_process_thread ()
711 if (pthread_equal (_main_thread, pthread_self()) != 0) {
715 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
717 if (pthread_equal (*i, pthread_self ()) != 0) {
725 PortAudioBackend::process_thread_count ()
727 return _threads.size ();
731 PortAudioBackend::update_latencies ()
733 // trigger latency callback in RT thread (locked graph)
734 port_connect_add_remove_callback();
740 PortAudioBackend::private_handle () const
746 PortAudioBackend::my_name () const
748 return _instance_name;
752 PortAudioBackend::available () const
754 return _run && _active;
758 PortAudioBackend::port_name_size () const
764 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
766 if (!valid_port (port)) {
767 PBD::error << _("PortAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
770 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
774 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
776 if (!valid_port (port)) {
777 PBD::error << _("PortAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
778 return std::string ();
780 return static_cast<PamPort*>(port)->name ();
783 PortEngine::PortHandle
784 PortAudioBackend::get_port_by_name (const std::string& name) const
786 PortHandle port = (PortHandle) find_port (name);
791 PortAudioBackend::get_ports (
792 const std::string& port_name_pattern,
793 DataType type, PortFlags flags,
794 std::vector<std::string>& port_names) const
798 bool use_regexp = false;
799 if (port_name_pattern.size () > 0) {
800 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
804 for (size_t i = 0; i < _ports.size (); ++i) {
805 PamPort* port = _ports[i];
806 if ((port->type () == type) && flags == (port->flags () & flags)) {
807 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
808 port_names.push_back (port->name ());
814 regfree (&port_regex);
820 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
822 if (!valid_port (port)) {
823 return DataType::NIL;
825 return static_cast<PamPort*>(port)->type ();
828 PortEngine::PortHandle
829 PortAudioBackend::register_port (
830 const std::string& name,
831 ARDOUR::DataType type,
832 ARDOUR::PortFlags flags)
834 if (name.size () == 0) { return 0; }
835 if (flags & IsPhysical) { return 0; }
836 return add_port (_instance_name + ":" + name, type, flags);
839 PortEngine::PortHandle
840 PortAudioBackend::add_port (
841 const std::string& name,
842 ARDOUR::DataType type,
843 ARDOUR::PortFlags flags)
845 assert(name.size ());
846 if (find_port (name)) {
847 PBD::error << _("PortAudioBackend::register_port: Port already exists:")
848 << " (" << name << ")" << endmsg;
851 PamPort* port = NULL;
853 case DataType::AUDIO:
854 port = new PortAudioPort (*this, name, flags);
857 port = new PortMidiPort (*this, name, flags);
860 PBD::error << _("PortAudioBackend::register_port: Invalid Data Type.") << endmsg;
864 _ports.push_back (port);
870 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
875 PamPort* port = static_cast<PamPort*>(port_handle);
876 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
877 if (i == _ports.end ()) {
878 PBD::error << _("PortAudioBackend::unregister_port: Failed to find port") << endmsg;
881 disconnect_all(port_handle);
887 PortAudioBackend::register_system_audio_ports()
891 const uint32_t a_ins = _n_inputs;
892 const uint32_t a_out = _n_outputs;
894 // XXX PA reported stream latencies don't match measurements
895 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
896 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
899 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
900 for (uint32_t i = 0; i < a_ins; ++i) {
902 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
903 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
905 set_latency_range (p, false, lr);
906 _system_inputs.push_back(static_cast<PortAudioPort*>(p));
909 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
910 for (uint32_t i = 0; i < a_out; ++i) {
912 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
913 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
915 set_latency_range (p, true, lr);
916 _system_outputs.push_back(static_cast<PamPort*>(p));
922 PortAudioBackend::register_system_midi_ports()
924 if (_midi_driver_option == _("None")) {
925 DEBUG_MIDI ("No MIDI backend selected, not system midi ports available\n");
930 lr.min = lr.max = _samples_per_period;
932 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
934 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
937 std::string port_name = "system_midi:" + (*i)->name() + " capture";
941 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
943 set_latency_range (p, false, lr);
944 _system_midi_in.push_back (static_cast<PortMidiPort*>(p));
945 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
948 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
950 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
953 std::string port_name = "system_midi:" + (*i)->name() + " playback";
957 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
959 set_latency_range (p, false, lr);
960 static_cast<PortMidiPort*>(p)->set_n_periods(2);
961 _system_midi_out.push_back (static_cast<PortMidiPort*>(p));
962 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
968 PortAudioBackend::unregister_ports (bool system_only)
971 _system_inputs.clear();
972 _system_outputs.clear();
973 _system_midi_in.clear();
974 _system_midi_out.clear();
975 while (i < _ports.size ()) {
976 PamPort* port = _ports[i];
977 if (! system_only || (port->is_physical () && port->is_terminal ())) {
978 port->disconnect_all ();
980 _ports.erase (_ports.begin() + i);
988 PortAudioBackend::connect (const std::string& src, const std::string& dst)
990 PamPort* src_port = find_port (src);
991 PamPort* dst_port = find_port (dst);
994 PBD::error << _("PortAudioBackend::connect: Invalid Source port:")
995 << " (" << src <<")" << endmsg;
999 PBD::error << _("PortAudioBackend::connect: Invalid Destination port:")
1000 << " (" << dst <<")" << endmsg;
1003 return src_port->connect (dst_port);
1007 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1009 PamPort* src_port = find_port (src);
1010 PamPort* dst_port = find_port (dst);
1012 if (!src_port || !dst_port) {
1013 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1016 return src_port->disconnect (dst_port);
1020 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1022 PamPort* dst_port = find_port (dst);
1023 if (!valid_port (src)) {
1024 PBD::error << _("PortAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1028 PBD::error << _("PortAudioBackend::connect: Invalid Destination Port")
1029 << " (" << dst << ")" << endmsg;
1032 return static_cast<PamPort*>(src)->connect (dst_port);
1036 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1038 PamPort* dst_port = find_port (dst);
1039 if (!valid_port (src) || !dst_port) {
1040 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1043 return static_cast<PamPort*>(src)->disconnect (dst_port);
1047 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1049 if (!valid_port (port)) {
1050 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1053 static_cast<PamPort*>(port)->disconnect_all ();
1058 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1060 if (!valid_port (port)) {
1061 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1064 return static_cast<PamPort*>(port)->is_connected ();
1068 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1070 PamPort* dst_port = find_port (dst);
1071 if (!valid_port (src) || !dst_port) {
1072 PBD::error << _("PortAudioBackend::connected_to: Invalid Port") << endmsg;
1075 return static_cast<PamPort*>(src)->is_connected (dst_port);
1079 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1081 if (!valid_port (port)) {
1082 PBD::error << _("PortAudioBackend::physically_connected: Invalid Port") << endmsg;
1085 return static_cast<PamPort*>(port)->is_physically_connected ();
1089 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1091 if (!valid_port (port)) {
1092 PBD::error << _("PortAudioBackend::get_connections: Invalid Port") << endmsg;
1096 assert (0 == names.size ());
1098 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1100 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1101 names.push_back ((*i)->name ());
1104 return (int)names.size ();
1109 PortAudioBackend::midi_event_get (
1110 pframes_t& timestamp,
1111 size_t& size, uint8_t** buf, void* port_buffer,
1112 uint32_t event_index)
1114 if (!buf || !port_buffer) return -1;
1115 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1116 if (event_index >= source.size ()) {
1119 PortMidiEvent * const event = source[event_index].get ();
1121 timestamp = event->timestamp ();
1122 size = event->size ();
1123 *buf = event->data ();
1128 PortAudioBackend::midi_event_put (
1130 pframes_t timestamp,
1131 const uint8_t* buffer, size_t size)
1133 if (!buffer || !port_buffer) return -1;
1134 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1135 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1136 // nevermind, ::get_buffer() sorts events
1137 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1138 (pframes_t)dst.back ()->timestamp (),
1141 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1146 PortAudioBackend::get_midi_event_count (void* port_buffer)
1148 if (!port_buffer) return 0;
1149 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1153 PortAudioBackend::midi_clear (void* port_buffer)
1155 if (!port_buffer) return;
1156 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1164 PortAudioBackend::can_monitor_input () const
1170 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1176 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1182 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1187 /* Latency management */
1190 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1192 if (!valid_port (port)) {
1193 PBD::error << _("PamPort::set_latency_range (): invalid port.") << endmsg;
1195 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1199 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1202 if (!valid_port (port)) {
1203 PBD::error << _("PamPort::get_latency_range (): invalid port.") << endmsg;
1208 PamPort* p = static_cast<PamPort*>(port);
1211 r = p->latency_range (for_playback);
1213 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1214 if (p->is_input() && for_playback) {
1215 r.min += _samples_per_period;
1216 r.max += _samples_per_period;
1218 if (p->is_output() && !for_playback) {
1219 r.min += _samples_per_period;
1220 r.max += _samples_per_period;
1226 /* Discovering physical ports */
1229 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1231 if (!valid_port (port)) {
1232 PBD::error << _("PamPort::port_is_physical (): invalid port.") << endmsg;
1235 return static_cast<PamPort*>(port)->is_physical ();
1239 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1241 for (size_t i = 0; i < _ports.size (); ++i) {
1242 PamPort* port = _ports[i];
1243 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1244 port_names.push_back (port->name ());
1250 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1252 for (size_t i = 0; i < _ports.size (); ++i) {
1253 PamPort* port = _ports[i];
1254 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1255 port_names.push_back (port->name ());
1261 PortAudioBackend::n_physical_outputs () const
1265 for (size_t i = 0; i < _ports.size (); ++i) {
1266 PamPort* port = _ports[i];
1267 if (port->is_output () && port->is_physical ()) {
1268 switch (port->type ()) {
1269 case DataType::AUDIO: ++n_audio; break;
1270 case DataType::MIDI: ++n_midi; break;
1276 cc.set (DataType::AUDIO, n_audio);
1277 cc.set (DataType::MIDI, n_midi);
1282 PortAudioBackend::n_physical_inputs () const
1286 for (size_t i = 0; i < _ports.size (); ++i) {
1287 PamPort* port = _ports[i];
1288 if (port->is_input () && port->is_physical ()) {
1289 switch (port->type ()) {
1290 case DataType::AUDIO: ++n_audio; break;
1291 case DataType::MIDI: ++n_midi; break;
1297 cc.set (DataType::AUDIO, n_audio);
1298 cc.set (DataType::MIDI, n_midi);
1302 /* Getting access to the data buffer for a port */
1305 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1307 if (!port || !valid_port (port)) return NULL;
1308 return static_cast<PamPort*>(port)->get_buffer (nframes);
1313 PortAudioBackend::main_process_thread ()
1315 AudioEngine::thread_init_callback (this);
1317 _processed_samples = 0;
1319 uint64_t clock1, clock2;
1320 int64_t min_elapsed_us = 1000000;
1321 int64_t max_elapsed_us = 0;
1322 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1323 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1325 manager.registration_callback();
1326 manager.graph_order_callback();
1328 if (_pcmio->pcm_start()) {
1329 _pcmio->pcm_stop ();
1331 engine.halted_callback("PortAudio I/O error.");
1334 #ifdef USE_MMCSS_THREAD_PRIORITIES
1337 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
1338 mmcss::set_thread_priority (task_handle, mmcss::AVRT_PRIORITY_NORMAL);
1341 DWORD tid = GetThreadId (GetCurrentThread ());
1342 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1346 if (_freewheeling != _freewheel) {
1347 _freewheel = _freewheeling;
1348 engine.freewheel_callback (_freewheel);
1353 switch (_pcmio->next_cycle (_samples_per_period)) {
1357 DEBUG_AUDIO ("PortAudio: Xrun\n");
1361 PBD::error << _("PortAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
1366 clock1 = utils::get_microseconds ();
1370 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1371 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1374 /* de-queue incoming midi*/
1376 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1377 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1380 pframes_t sample_offset;
1382 size_t size = sizeof(data);
1383 while (_midiio->dequeue_input_event (i,
1384 m_cycle_timer.get_start (),
1385 m_cycle_timer.get_next_start (),
1389 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1390 midi_event_put (mbuf, sample_offset, data, size);
1391 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1392 "sample_offset: %2 timestamp: %3, size: %4\n",
1393 _midiio->get_inputs ()[i]->name (),
1397 size = sizeof(data);
1401 /* clear output buffers */
1402 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1403 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1406 m_last_cycle_start = m_cycle_timer.get_start ();
1407 m_cycle_timer.reset_start(utils::get_microseconds());
1410 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1411 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1412 m_total_deviation_us += std::abs(deviation_us);
1413 m_max_deviation_us =
1414 std::max (m_max_deviation_us, (uint64_t)std::abs (deviation_us));
1416 if ((m_cycle_count % 1000) == 0) {
1417 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1419 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1420 mean_deviation_us * 1e-3,
1421 m_max_deviation_us * 1e-3));
1424 if (std::abs(deviation_us) > m_cycle_timer.get_length_us()) {
1425 DEBUG_TIMING (string_compose (
1426 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1427 cycle_diff_us * 1e-3,
1428 m_cycle_timer.get_length_us () * 1e-3,
1429 deviation_us * 1e-3));
1432 /* call engine process callback */
1433 if (engine.process_callback (_samples_per_period)) {
1434 _pcmio->pcm_stop ();
1439 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1440 static_cast<PortMidiPort*>(*it)->next_period();
1442 /* queue outgoing midi */
1444 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1445 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1447 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1448 uint64_t timestamp =
1449 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1451 string_compose ("Queuing outgoing MIDI data for device: "
1452 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1453 _midiio->get_outputs ()[i]->name (),
1454 (*mit)->timestamp (),
1457 _midiio->enqueue_output_event (
1458 i, timestamp, (*mit)->data (), (*mit)->size ());
1462 /* write back audio */
1464 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1465 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1468 _processed_samples += _samples_per_period;
1470 /* calculate DSP load */
1471 clock2 = utils::get_microseconds ();
1472 const int64_t elapsed_time = clock2 - clock1;
1473 _dsp_load = elapsed_time / (float) nomial_time;
1475 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1476 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1477 if ((m_cycle_count % 1000) == 0) {
1479 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1487 // zero audio input buffers
1488 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1489 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1492 clock1 = utils::get_microseconds ();
1494 // TODO clear midi or stop midi recv when entering fwheelin'
1496 if (engine.process_callback (_samples_per_period)) {
1497 _pcmio->pcm_stop ();
1502 // drop all outgoing MIDI messages
1503 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1504 void *bptr = (*it)->get_buffer(0);
1509 Glib::usleep (100); // don't hog cpu
1512 bool connections_changed = false;
1513 bool ports_changed = false;
1514 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1515 if (_port_change_flag) {
1516 ports_changed = true;
1517 _port_change_flag = false;
1519 if (!_port_connection_queue.empty ()) {
1520 connections_changed = true;
1522 while (!_port_connection_queue.empty ()) {
1523 PortConnectData *c = _port_connection_queue.back ();
1524 manager.connect_callback (c->a, c->b, c->c);
1525 _port_connection_queue.pop_back ();
1528 pthread_mutex_unlock (&_port_callback_mutex);
1530 if (ports_changed) {
1531 manager.registration_callback();
1533 if (connections_changed) {
1534 manager.graph_order_callback();
1536 if (connections_changed || ports_changed) {
1537 engine.latency_callback(false);
1538 engine.latency_callback(true);
1542 _pcmio->pcm_stop ();
1545 engine.halted_callback("PortAudio I/O error.");
1548 #ifdef USE_MMCSS_THREAD_PRIORITIES
1549 mmcss::revert_thread_characteristics (task_handle);
1556 /******************************************************************************/
1558 static boost::shared_ptr<PortAudioBackend> _instance;
1560 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1561 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1562 static int deinstantiate ();
1563 static bool already_configured ();
1564 static bool available ();
1566 static ARDOUR::AudioBackendInfo _descriptor = {
1575 static boost::shared_ptr<AudioBackend>
1576 backend_factory (AudioEngine& e)
1579 _instance.reset (new PortAudioBackend (e, _descriptor));
1585 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1587 s_instance_name = arg1;
1599 already_configured ()
1610 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1612 return &_descriptor;
1616 /******************************************************************************/
1617 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1622 _capture_latency_range.min = 0;
1623 _capture_latency_range.max = 0;
1624 _playback_latency_range.min = 0;
1625 _playback_latency_range.max = 0;
1628 PamPort::~PamPort () {
1633 int PamPort::connect (PamPort *port)
1636 PBD::error << _("PamPort::connect (): invalid (null) port") << endmsg;
1640 if (type () != port->type ()) {
1641 PBD::error << _("PamPort::connect (): wrong port-type") << endmsg;
1645 if (is_output () && port->is_output ()) {
1646 PBD::error << _("PamPort::connect (): cannot inter-connect output ports.") << endmsg;
1650 if (is_input () && port->is_input ()) {
1651 PBD::error << _("PamPort::connect (): cannot inter-connect input ports.") << endmsg;
1656 PBD::error << _("PamPort::connect (): cannot self-connect ports.") << endmsg;
1660 if (is_connected (port)) {
1661 #if 0 // don't bother to warn about this for now. just ignore it
1662 PBD::error << _("PamPort::connect (): ports are already connected:")
1663 << " (" << name () << ") -> (" << port->name () << ")"
1669 _connect (port, true);
1674 void PamPort::_connect (PamPort *port, bool callback)
1676 _connections.push_back (port);
1678 port->_connect (this, false);
1679 _osx_backend.port_connect_callback (name(), port->name(), true);
1683 int PamPort::disconnect (PamPort *port)
1686 PBD::error << _("PamPort::disconnect (): invalid (null) port") << endmsg;
1690 if (!is_connected (port)) {
1691 PBD::error << _("PamPort::disconnect (): ports are not connected:")
1692 << " (" << name () << ") -> (" << port->name () << ")"
1696 _disconnect (port, true);
1700 void PamPort::_disconnect (PamPort *port, bool callback)
1702 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1704 assert (it != _connections.end ());
1706 _connections.erase (it);
1709 port->_disconnect (this, false);
1710 _osx_backend.port_connect_callback (name(), port->name(), false);
1715 void PamPort::disconnect_all ()
1717 while (!_connections.empty ()) {
1718 _connections.back ()->_disconnect (this, false);
1719 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1720 _connections.pop_back ();
1725 PamPort::is_connected (const PamPort *port) const
1727 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1730 bool PamPort::is_physically_connected () const
1732 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1733 if ((*it)->is_physical ()) {
1740 /******************************************************************************/
1742 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1743 : PamPort (b, name, flags)
1745 memset (_buffer, 0, sizeof (_buffer));
1746 #ifndef PLATFORM_WINDOWS
1747 mlock(_buffer, sizeof (_buffer));
1751 PortAudioPort::~PortAudioPort () { }
1753 void* PortAudioPort::get_buffer (pframes_t n_samples)
1756 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1757 if (it == get_connections ().end ()) {
1758 memset (_buffer, 0, n_samples * sizeof (Sample));
1760 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1761 assert (source && source->is_output ());
1762 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1763 while (++it != get_connections ().end ()) {
1764 source = static_cast<const PortAudioPort*>(*it);
1765 assert (source && source->is_output ());
1766 Sample* dst = buffer ();
1767 const Sample* src = source->const_buffer ();
1768 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1778 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1779 : PamPort (b, name, flags)
1783 _buffer[0].clear ();
1784 _buffer[1].clear ();
1787 PortMidiPort::~PortMidiPort () { }
1789 struct MidiEventSorter {
1790 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1795 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1798 (_buffer[_bufperiod]).clear ();
1799 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1800 i != get_connections ().end ();
1802 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1803 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1804 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1807 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1809 return &(_buffer[_bufperiod]);
1812 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1814 , _timestamp (timestamp)
1818 _data = (uint8_t*) malloc (size);
1819 memcpy (_data, data, size);
1823 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1824 : _size (other.size ())
1825 , _timestamp (other.timestamp ())
1828 if (other.size () && other.const_data ()) {
1829 _data = (uint8_t*) malloc (other.size ());
1830 memcpy (_data, other.const_data (), other.size ());
1834 PortMidiEvent::~PortMidiEvent () {