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;
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 (_("None"));
400 return _midi_options;
404 PortAudioBackend::set_midi_option (const std::string& opt)
406 if (opt != _("None") && 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 PBD::error << _("PortAudioBackend: already active.") << endmsg;
444 PBD::warning << _("PortAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
445 _system_inputs.clear();
446 _system_outputs.clear();
447 _system_midi_in.clear();
448 _system_midi_out.clear();
452 /* reset internal state */
454 _freewheeling = false;
457 _pcmio->pcm_setup (name_to_id(_input_audio_device), name_to_id(_output_audio_device), _samplerate, _samples_per_period);
459 switch (_pcmio->state ()) {
460 case 0: /* OK */ break;
461 case -1: PBD::error << _("PortAudioBackend: failed to open device.") << endmsg; break;
462 default: PBD::error << _("PortAudioBackend: initialization failed.") << endmsg; break;
464 if (_pcmio->state ()) {
468 if (_n_outputs != _pcmio->n_playback_channels ()) {
469 _n_outputs = _pcmio->n_playback_channels ();
470 PBD::info << _("PortAudioBackend: adjusted output channel count to match device.") << endmsg;
473 if (_n_inputs != _pcmio->n_capture_channels ()) {
474 _n_inputs = _pcmio->n_capture_channels ();
475 PBD::info << _("PortAudioBackend: adjusted input channel count to match device.") << endmsg;
478 if (_pcmio->samples_per_period() != _samples_per_period) {
479 _samples_per_period = _pcmio->samples_per_period();
480 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
484 if (_pcmio->sample_rate() != _samplerate) {
485 _samplerate = _pcmio->sample_rate();
486 engine.sample_rate_change (_samplerate);
487 PBD::warning << _("PortAudioBackend: sample rate does not match.") << endmsg;
490 _measure_latency = for_latency_measurement;
493 _port_change_flag = false;
495 if (_midi_driver_option == winmme_driver_name) {
496 _midiio->set_enabled(true);
497 //_midiio->set_port_changed_callback(midi_port_change, this);
498 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
501 m_cycle_timer.set_samplerate(_samplerate);
502 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
504 DEBUG_MIDI ("Registering MIDI ports\n");
506 if (register_system_midi_ports () != 0) {
507 PBD::error << _ ("PortAudioBackend: failed to register system midi ports.")
513 DEBUG_AUDIO ("Registering Audio ports\n");
515 if (register_system_audio_ports()) {
516 PBD::error << _("PortAudioBackend: failed to register system audio ports.") << endmsg;
521 engine.sample_rate_change (_samplerate);
522 engine.buffer_size_change (_samples_per_period);
524 if (engine.reestablish_ports ()) {
525 PBD::error << _("PortAudioBackend: Could not re-establish ports.") << endmsg;
530 engine.reconnect_ports ();
532 _port_change_flag = false;
534 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
535 &_main_thread, pthread_process, this))
537 if (pthread_create (&_main_thread, NULL, pthread_process, this))
539 PBD::error << _("PortAudioBackend: failed to create process thread.") << endmsg;
543 PBD::warning << _("PortAudioBackend: cannot acquire realtime permissions.") << endmsg;
548 while (!_active && --timeout > 0) { Glib::usleep (1000); }
550 if (timeout == 0 || !_active) {
551 PBD::error << _("PortAudioBackend: failed to start.") << endmsg;
563 PortAudioBackend::stop ()
571 if (pthread_join (_main_thread, &status)) {
572 PBD::error << _("PortAudioBackend: failed to terminate.") << endmsg;
579 return (_active == false) ? 0 : -1;
583 PortAudioBackend::freewheel (bool onoff)
585 if (onoff == _freewheeling) {
588 _freewheeling = onoff;
593 PortAudioBackend::dsp_load () const
595 return 100.f * _dsp_load;
599 PortAudioBackend::raw_buffer_size (DataType t)
602 case DataType::AUDIO:
603 return _samples_per_period * sizeof(Sample);
605 return _max_buffer_size; // XXX not really limited
612 PortAudioBackend::sample_time ()
614 return _processed_samples;
618 PortAudioBackend::sample_time_at_cycle_start ()
620 return _processed_samples;
624 PortAudioBackend::samples_since_cycle_start ()
626 if (!_active || !_run || _freewheeling || _freewheel) {
629 if (!m_cycle_timer.valid()) {
633 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
637 PortAudioBackend::name_to_id(std::string device_name) const {
638 uint32_t device_id = UINT32_MAX;
639 std::map<int, std::string> devices;
640 _pcmio->input_device_list(devices);
641 _pcmio->output_device_list(devices);
643 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
644 if (i->second == device_name) {
645 device_id = i->first;
653 PortAudioBackend::portaudio_process_thread (void *arg)
655 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
656 boost::function<void ()> f = td->f;
659 #ifdef USE_MMCSS_THREAD_PRIORITIES
662 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
663 mmcss::set_thread_priority (task_handle, mmcss::AVRT_PRIORITY_NORMAL);
666 DWORD tid = GetCurrentThreadId ();
667 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
671 #ifdef USE_MMCSS_THREAD_PRIORITIES
672 mmcss::revert_thread_characteristics (task_handle);
679 PortAudioBackend::create_process_thread (boost::function<void()> func)
683 size_t stacksize = 100000;
685 ThreadData* td = new ThreadData (this, func, stacksize);
687 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
688 &thread_id, portaudio_process_thread, td)) {
689 pthread_attr_init (&attr);
690 pthread_attr_setstacksize (&attr, stacksize);
691 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
692 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
693 pthread_attr_destroy (&attr);
696 pthread_attr_destroy (&attr);
699 _threads.push_back (thread_id);
704 PortAudioBackend::join_process_threads ()
708 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
711 if (pthread_join (*i, &status)) {
712 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
721 PortAudioBackend::in_process_thread ()
723 if (pthread_equal (_main_thread, pthread_self()) != 0) {
727 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
729 if (pthread_equal (*i, pthread_self ()) != 0) {
737 PortAudioBackend::process_thread_count ()
739 return _threads.size ();
743 PortAudioBackend::update_latencies ()
745 // trigger latency callback in RT thread (locked graph)
746 port_connect_add_remove_callback();
752 PortAudioBackend::private_handle () const
758 PortAudioBackend::my_name () const
760 return _instance_name;
764 PortAudioBackend::available () const
766 return _run && _active;
770 PortAudioBackend::port_name_size () const
776 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
778 if (!valid_port (port)) {
779 PBD::error << _("PortAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
782 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
786 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
788 if (!valid_port (port)) {
789 PBD::error << _("PortAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
790 return std::string ();
792 return static_cast<PamPort*>(port)->name ();
796 PortAudioBackend::get_port_property (PortHandle port,
797 const std::string& key,
799 std::string& type) const
801 if (!valid_port (port)) {
802 PBD::error << _ ("PortAudioBackend::get_port_name: Invalid Port(s)")
807 if (key == "http://jackaudio.org/metadata/pretty-name") {
809 value = static_cast<PamPort*>(port)->pretty_name ();
810 if (!value.empty()) {
817 PortEngine::PortHandle
818 PortAudioBackend::get_port_by_name (const std::string& name) const
820 PortHandle port = (PortHandle) find_port (name);
825 PortAudioBackend::get_ports (
826 const std::string& port_name_pattern,
827 DataType type, PortFlags flags,
828 std::vector<std::string>& port_names) const
832 bool use_regexp = false;
833 if (port_name_pattern.size () > 0) {
834 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
838 for (size_t i = 0; i < _ports.size (); ++i) {
839 PamPort* port = _ports[i];
840 if ((port->type () == type) && flags == (port->flags () & flags)) {
841 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
842 port_names.push_back (port->name ());
848 regfree (&port_regex);
854 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
856 if (!valid_port (port)) {
857 return DataType::NIL;
859 return static_cast<PamPort*>(port)->type ();
862 PortEngine::PortHandle
863 PortAudioBackend::register_port (
864 const std::string& name,
865 ARDOUR::DataType type,
866 ARDOUR::PortFlags flags)
868 if (name.size () == 0) { return 0; }
869 if (flags & IsPhysical) { return 0; }
870 return add_port (_instance_name + ":" + name, type, flags);
873 PortEngine::PortHandle
874 PortAudioBackend::add_port (
875 const std::string& name,
876 ARDOUR::DataType type,
877 ARDOUR::PortFlags flags)
879 assert(name.size ());
880 if (find_port (name)) {
881 PBD::error << _("PortAudioBackend::register_port: Port already exists:")
882 << " (" << name << ")" << endmsg;
885 PamPort* port = NULL;
887 case DataType::AUDIO:
888 port = new PortAudioPort (*this, name, flags);
891 port = new PortMidiPort (*this, name, flags);
894 PBD::error << _("PortAudioBackend::register_port: Invalid Data Type.") << endmsg;
898 _ports.push_back (port);
904 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
909 PamPort* port = static_cast<PamPort*>(port_handle);
910 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
911 if (i == _ports.end ()) {
912 PBD::error << _("PortAudioBackend::unregister_port: Failed to find port") << endmsg;
915 disconnect_all(port_handle);
921 PortAudioBackend::register_system_audio_ports()
925 const uint32_t a_ins = _n_inputs;
926 const uint32_t a_out = _n_outputs;
928 // XXX PA reported stream latencies don't match measurements
929 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
930 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
933 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
934 for (uint32_t i = 0; i < a_ins; ++i) {
936 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
937 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
939 set_latency_range (p, false, lr);
940 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
941 audio_port->set_pretty_name (
942 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
943 _system_inputs.push_back (audio_port);
946 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
947 for (uint32_t i = 0; i < a_out; ++i) {
949 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
950 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
952 set_latency_range (p, true, lr);
953 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
954 audio_port->set_pretty_name (
955 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
956 _system_outputs.push_back(audio_port);
962 PortAudioBackend::register_system_midi_ports()
964 if (_midi_driver_option == _("None")) {
965 DEBUG_MIDI ("No MIDI backend selected, not system midi ports available\n");
970 lr.min = lr.max = _samples_per_period;
972 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
974 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
977 std::string port_name = "system_midi:" + (*i)->name() + " capture";
981 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
983 set_latency_range (p, false, lr);
984 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
985 midi_port->set_pretty_name ((*i)->name());
986 _system_midi_in.push_back (midi_port);
987 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
990 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
992 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
995 std::string port_name = "system_midi:" + (*i)->name() + " playback";
999 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1001 set_latency_range (p, false, lr);
1002 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1003 midi_port->set_n_periods(2);
1004 midi_port->set_pretty_name ((*i)->name());
1005 _system_midi_out.push_back (midi_port);
1006 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1012 PortAudioBackend::unregister_ports (bool system_only)
1015 _system_inputs.clear();
1016 _system_outputs.clear();
1017 _system_midi_in.clear();
1018 _system_midi_out.clear();
1019 while (i < _ports.size ()) {
1020 PamPort* port = _ports[i];
1021 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1022 port->disconnect_all ();
1024 _ports.erase (_ports.begin() + i);
1032 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1034 PamPort* src_port = find_port (src);
1035 PamPort* dst_port = find_port (dst);
1038 PBD::error << _("PortAudioBackend::connect: Invalid Source port:")
1039 << " (" << src <<")" << endmsg;
1043 PBD::error << _("PortAudioBackend::connect: Invalid Destination port:")
1044 << " (" << dst <<")" << endmsg;
1047 return src_port->connect (dst_port);
1051 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1053 PamPort* src_port = find_port (src);
1054 PamPort* dst_port = find_port (dst);
1056 if (!src_port || !dst_port) {
1057 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1060 return src_port->disconnect (dst_port);
1064 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1066 PamPort* dst_port = find_port (dst);
1067 if (!valid_port (src)) {
1068 PBD::error << _("PortAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1072 PBD::error << _("PortAudioBackend::connect: Invalid Destination Port")
1073 << " (" << dst << ")" << endmsg;
1076 return static_cast<PamPort*>(src)->connect (dst_port);
1080 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1082 PamPort* dst_port = find_port (dst);
1083 if (!valid_port (src) || !dst_port) {
1084 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1087 return static_cast<PamPort*>(src)->disconnect (dst_port);
1091 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1093 if (!valid_port (port)) {
1094 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1097 static_cast<PamPort*>(port)->disconnect_all ();
1102 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1104 if (!valid_port (port)) {
1105 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1108 return static_cast<PamPort*>(port)->is_connected ();
1112 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1114 PamPort* dst_port = find_port (dst);
1115 if (!valid_port (src) || !dst_port) {
1116 PBD::error << _("PortAudioBackend::connected_to: Invalid Port") << endmsg;
1119 return static_cast<PamPort*>(src)->is_connected (dst_port);
1123 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1125 if (!valid_port (port)) {
1126 PBD::error << _("PortAudioBackend::physically_connected: Invalid Port") << endmsg;
1129 return static_cast<PamPort*>(port)->is_physically_connected ();
1133 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1135 if (!valid_port (port)) {
1136 PBD::error << _("PortAudioBackend::get_connections: Invalid Port") << endmsg;
1140 assert (0 == names.size ());
1142 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1144 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1145 names.push_back ((*i)->name ());
1148 return (int)names.size ();
1153 PortAudioBackend::midi_event_get (
1154 pframes_t& timestamp,
1155 size_t& size, uint8_t** buf, void* port_buffer,
1156 uint32_t event_index)
1158 if (!buf || !port_buffer) return -1;
1159 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1160 if (event_index >= source.size ()) {
1163 PortMidiEvent * const event = source[event_index].get ();
1165 timestamp = event->timestamp ();
1166 size = event->size ();
1167 *buf = event->data ();
1172 PortAudioBackend::midi_event_put (
1174 pframes_t timestamp,
1175 const uint8_t* buffer, size_t size)
1177 if (!buffer || !port_buffer) return -1;
1178 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1179 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1180 // nevermind, ::get_buffer() sorts events
1181 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1182 (pframes_t)dst.back ()->timestamp (),
1185 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1190 PortAudioBackend::get_midi_event_count (void* port_buffer)
1192 if (!port_buffer) return 0;
1193 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1197 PortAudioBackend::midi_clear (void* port_buffer)
1199 if (!port_buffer) return;
1200 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1208 PortAudioBackend::can_monitor_input () const
1214 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1220 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1226 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1231 /* Latency management */
1234 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1236 if (!valid_port (port)) {
1237 PBD::error << _("PamPort::set_latency_range (): invalid port.") << endmsg;
1239 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1243 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1246 if (!valid_port (port)) {
1247 PBD::error << _("PamPort::get_latency_range (): invalid port.") << endmsg;
1252 PamPort* p = static_cast<PamPort*>(port);
1255 r = p->latency_range (for_playback);
1257 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1258 if (p->is_input() && for_playback) {
1259 r.min += _samples_per_period;
1260 r.max += _samples_per_period;
1262 if (p->is_output() && !for_playback) {
1263 r.min += _samples_per_period;
1264 r.max += _samples_per_period;
1270 /* Discovering physical ports */
1273 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1275 if (!valid_port (port)) {
1276 PBD::error << _("PamPort::port_is_physical (): invalid port.") << endmsg;
1279 return static_cast<PamPort*>(port)->is_physical ();
1283 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1285 for (size_t i = 0; i < _ports.size (); ++i) {
1286 PamPort* port = _ports[i];
1287 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1288 port_names.push_back (port->name ());
1294 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1296 for (size_t i = 0; i < _ports.size (); ++i) {
1297 PamPort* port = _ports[i];
1298 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1299 port_names.push_back (port->name ());
1305 PortAudioBackend::n_physical_outputs () const
1309 for (size_t i = 0; i < _ports.size (); ++i) {
1310 PamPort* port = _ports[i];
1311 if (port->is_output () && port->is_physical ()) {
1312 switch (port->type ()) {
1313 case DataType::AUDIO: ++n_audio; break;
1314 case DataType::MIDI: ++n_midi; break;
1320 cc.set (DataType::AUDIO, n_audio);
1321 cc.set (DataType::MIDI, n_midi);
1326 PortAudioBackend::n_physical_inputs () const
1330 for (size_t i = 0; i < _ports.size (); ++i) {
1331 PamPort* port = _ports[i];
1332 if (port->is_input () && port->is_physical ()) {
1333 switch (port->type ()) {
1334 case DataType::AUDIO: ++n_audio; break;
1335 case DataType::MIDI: ++n_midi; break;
1341 cc.set (DataType::AUDIO, n_audio);
1342 cc.set (DataType::MIDI, n_midi);
1346 /* Getting access to the data buffer for a port */
1349 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1351 if (!port || !valid_port (port)) return NULL;
1352 return static_cast<PamPort*>(port)->get_buffer (nframes);
1357 PortAudioBackend::main_process_thread ()
1359 AudioEngine::thread_init_callback (this);
1361 _processed_samples = 0;
1363 uint64_t clock1, clock2;
1364 int64_t min_elapsed_us = 1000000;
1365 int64_t max_elapsed_us = 0;
1366 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1367 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1369 manager.registration_callback();
1370 manager.graph_order_callback();
1372 if (_pcmio->pcm_start()) {
1373 _pcmio->pcm_stop ();
1375 engine.halted_callback("PortAudio I/O error.");
1378 #ifdef USE_MMCSS_THREAD_PRIORITIES
1381 mmcss::set_thread_characteristics ("Pro Audio", &task_handle);
1382 mmcss::set_thread_priority (task_handle, mmcss::AVRT_PRIORITY_NORMAL);
1385 DWORD tid = GetCurrentThreadId ();
1386 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1390 if (_freewheeling != _freewheel) {
1391 _freewheel = _freewheeling;
1392 engine.freewheel_callback (_freewheel);
1397 switch (_pcmio->next_cycle (_samples_per_period)) {
1401 DEBUG_AUDIO ("PortAudio: Xrun\n");
1405 PBD::error << _("PortAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
1410 clock1 = utils::get_microseconds ();
1414 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1415 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1418 /* de-queue incoming midi*/
1420 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1421 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1424 pframes_t sample_offset;
1426 size_t size = sizeof(data);
1427 while (_midiio->dequeue_input_event (i,
1428 m_cycle_timer.get_start (),
1429 m_cycle_timer.get_next_start (),
1433 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1434 midi_event_put (mbuf, sample_offset, data, size);
1435 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1436 "sample_offset: %2 timestamp: %3, size: %4\n",
1437 _midiio->get_inputs ()[i]->name (),
1441 size = sizeof(data);
1445 /* clear output buffers */
1446 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1447 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1450 m_last_cycle_start = m_cycle_timer.get_start ();
1451 m_cycle_timer.reset_start(utils::get_microseconds());
1454 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1455 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1456 m_total_deviation_us += ::llabs(deviation_us);
1457 m_max_deviation_us =
1458 std::max (m_max_deviation_us, (uint64_t)::llabs (deviation_us));
1460 if ((m_cycle_count % 1000) == 0) {
1461 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1463 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1464 mean_deviation_us * 1e-3,
1465 m_max_deviation_us * 1e-3));
1468 if (::llabs(deviation_us) > m_cycle_timer.get_length_us()) {
1469 DEBUG_TIMING (string_compose (
1470 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1471 cycle_diff_us * 1e-3,
1472 m_cycle_timer.get_length_us () * 1e-3,
1473 deviation_us * 1e-3));
1476 /* call engine process callback */
1477 if (engine.process_callback (_samples_per_period)) {
1478 _pcmio->pcm_stop ();
1483 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1484 static_cast<PortMidiPort*>(*it)->next_period();
1486 /* queue outgoing midi */
1488 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1489 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1491 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1492 uint64_t timestamp =
1493 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1495 string_compose ("Queuing outgoing MIDI data for device: "
1496 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1497 _midiio->get_outputs ()[i]->name (),
1498 (*mit)->timestamp (),
1501 _midiio->enqueue_output_event (
1502 i, timestamp, (*mit)->data (), (*mit)->size ());
1506 /* write back audio */
1508 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1509 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1512 _processed_samples += _samples_per_period;
1514 /* calculate DSP load */
1515 clock2 = utils::get_microseconds ();
1516 const int64_t elapsed_time = clock2 - clock1;
1517 _dsp_load = elapsed_time / (float) nomial_time;
1519 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1520 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1521 if ((m_cycle_count % 1000) == 0) {
1523 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1531 // zero audio input buffers
1532 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1533 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1536 clock1 = utils::get_microseconds ();
1538 // TODO clear midi or stop midi recv when entering fwheelin'
1540 if (engine.process_callback (_samples_per_period)) {
1541 _pcmio->pcm_stop ();
1546 // drop all outgoing MIDI messages
1547 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1548 void *bptr = (*it)->get_buffer(0);
1553 Glib::usleep (100); // don't hog cpu
1556 bool connections_changed = false;
1557 bool ports_changed = false;
1558 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1559 if (_port_change_flag) {
1560 ports_changed = true;
1561 _port_change_flag = false;
1563 if (!_port_connection_queue.empty ()) {
1564 connections_changed = true;
1566 while (!_port_connection_queue.empty ()) {
1567 PortConnectData *c = _port_connection_queue.back ();
1568 manager.connect_callback (c->a, c->b, c->c);
1569 _port_connection_queue.pop_back ();
1572 pthread_mutex_unlock (&_port_callback_mutex);
1574 if (ports_changed) {
1575 manager.registration_callback();
1577 if (connections_changed) {
1578 manager.graph_order_callback();
1580 if (connections_changed || ports_changed) {
1581 engine.latency_callback(false);
1582 engine.latency_callback(true);
1586 _pcmio->pcm_stop ();
1589 engine.halted_callback("PortAudio I/O error.");
1592 #ifdef USE_MMCSS_THREAD_PRIORITIES
1593 mmcss::revert_thread_characteristics (task_handle);
1600 /******************************************************************************/
1602 static boost::shared_ptr<PortAudioBackend> _instance;
1604 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1605 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1606 static int deinstantiate ();
1607 static bool already_configured ();
1608 static bool available ();
1610 static ARDOUR::AudioBackendInfo _descriptor = {
1619 static boost::shared_ptr<AudioBackend>
1620 backend_factory (AudioEngine& e)
1623 _instance.reset (new PortAudioBackend (e, _descriptor));
1629 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1631 s_instance_name = arg1;
1643 already_configured ()
1654 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1656 return &_descriptor;
1660 /******************************************************************************/
1661 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1666 _capture_latency_range.min = 0;
1667 _capture_latency_range.max = 0;
1668 _playback_latency_range.min = 0;
1669 _playback_latency_range.max = 0;
1672 PamPort::~PamPort () {
1677 int PamPort::connect (PamPort *port)
1680 PBD::error << _("PamPort::connect (): invalid (null) port") << endmsg;
1684 if (type () != port->type ()) {
1685 PBD::error << _("PamPort::connect (): wrong port-type") << endmsg;
1689 if (is_output () && port->is_output ()) {
1690 PBD::error << _("PamPort::connect (): cannot inter-connect output ports.") << endmsg;
1694 if (is_input () && port->is_input ()) {
1695 PBD::error << _("PamPort::connect (): cannot inter-connect input ports.") << endmsg;
1700 PBD::error << _("PamPort::connect (): cannot self-connect ports.") << endmsg;
1704 if (is_connected (port)) {
1705 #if 0 // don't bother to warn about this for now. just ignore it
1706 PBD::error << _("PamPort::connect (): ports are already connected:")
1707 << " (" << name () << ") -> (" << port->name () << ")"
1713 _connect (port, true);
1718 void PamPort::_connect (PamPort *port, bool callback)
1720 _connections.push_back (port);
1722 port->_connect (this, false);
1723 _osx_backend.port_connect_callback (name(), port->name(), true);
1727 int PamPort::disconnect (PamPort *port)
1730 PBD::error << _("PamPort::disconnect (): invalid (null) port") << endmsg;
1734 if (!is_connected (port)) {
1735 PBD::error << _("PamPort::disconnect (): ports are not connected:")
1736 << " (" << name () << ") -> (" << port->name () << ")"
1740 _disconnect (port, true);
1744 void PamPort::_disconnect (PamPort *port, bool callback)
1746 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1748 assert (it != _connections.end ());
1750 _connections.erase (it);
1753 port->_disconnect (this, false);
1754 _osx_backend.port_connect_callback (name(), port->name(), false);
1759 void PamPort::disconnect_all ()
1761 while (!_connections.empty ()) {
1762 _connections.back ()->_disconnect (this, false);
1763 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1764 _connections.pop_back ();
1769 PamPort::is_connected (const PamPort *port) const
1771 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1774 bool PamPort::is_physically_connected () const
1776 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1777 if ((*it)->is_physical ()) {
1784 /******************************************************************************/
1786 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1787 : PamPort (b, name, flags)
1789 memset (_buffer, 0, sizeof (_buffer));
1790 #ifndef PLATFORM_WINDOWS
1791 mlock(_buffer, sizeof (_buffer));
1795 PortAudioPort::~PortAudioPort () { }
1797 void* PortAudioPort::get_buffer (pframes_t n_samples)
1800 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1801 if (it == get_connections ().end ()) {
1802 memset (_buffer, 0, n_samples * sizeof (Sample));
1804 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1805 assert (source && source->is_output ());
1806 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1807 while (++it != get_connections ().end ()) {
1808 source = static_cast<const PortAudioPort*>(*it);
1809 assert (source && source->is_output ());
1810 Sample* dst = buffer ();
1811 const Sample* src = source->const_buffer ();
1812 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1822 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1823 : PamPort (b, name, flags)
1827 _buffer[0].clear ();
1828 _buffer[1].clear ();
1831 PortMidiPort::~PortMidiPort () { }
1833 struct MidiEventSorter {
1834 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1839 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1842 (_buffer[_bufperiod]).clear ();
1843 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1844 i != get_connections ().end ();
1846 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1847 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1848 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1851 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1853 return &(_buffer[_bufperiod]);
1856 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1858 , _timestamp (timestamp)
1862 _data = (uint8_t*) malloc (size);
1863 memcpy (_data, data, size);
1867 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1868 : _size (other.size ())
1869 , _timestamp (other.timestamp ())
1872 if (other.size () && other.const_data ()) {
1873 _data = (uint8_t*) malloc (other.size ());
1874 memcpy (_data, other.const_data (), other.size ());
1878 PortMidiEvent::~PortMidiEvent () {