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"
42 using namespace ARDOUR;
46 const char * const winmme_driver_name = X_("WinMME");
50 static std::string s_instance_name;
51 size_t PortAudioBackend::_max_buffer_size = 8192;
52 std::vector<std::string> PortAudioBackend::_midi_options;
53 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_input_audio_device_status;
54 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_output_audio_device_status;
56 PortAudioBackend::PortAudioBackend (AudioEngine& e, AudioBackendInfo& info)
57 : AudioBackend (e, info)
62 , _measure_latency (false)
64 , m_total_deviation_us(0)
65 , m_max_deviation_us(0)
66 , _input_audio_device("")
67 , _output_audio_device("")
68 , _midi_driver_option(_("None"))
70 , _samples_per_period (1024)
73 , _systemic_audio_input_latency (0)
74 , _systemic_audio_output_latency (0)
76 , _processed_samples (0)
77 , _port_change_flag (false)
79 _instance_name = s_instance_name;
80 pthread_mutex_init (&_port_callback_mutex, 0);
82 _pcmio = new PortAudioIO ();
83 _midiio = new WinMMEMidiIO ();
86 PortAudioBackend::~PortAudioBackend ()
88 delete _pcmio; _pcmio = 0;
89 delete _midiio; _midiio = 0;
90 pthread_mutex_destroy (&_port_callback_mutex);
93 /* AUDIOBACKEND API */
96 PortAudioBackend::name () const
98 return X_("PortAudio");
102 PortAudioBackend::is_realtime () const
108 PortAudioBackend::requires_driver_selection() const
110 // we could do this but implementation would need changing
112 if (enumerate_drivers().size() == 1) {
119 std::vector<std::string>
120 PortAudioBackend::enumerate_drivers () const
122 DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
123 std::vector<std::string> currently_available;
124 _pcmio->host_api_list (currently_available);
125 return currently_available;
129 PortAudioBackend::set_driver (const std::string& name)
131 DEBUG_AUDIO (string_compose ("Portaudio: set_driver %1 \n", name));
132 if (!_pcmio->set_host_api (name)) {
133 DEBUG_AUDIO (string_compose ("Portaudio: Unable to set_driver %1 \n", name));
140 PortAudioBackend::driver_name () const
142 std::string driver_name = _pcmio->get_host_api ();
143 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
148 PortAudioBackend::use_separate_input_and_output_devices () const
153 std::vector<AudioBackend::DeviceStatus>
154 PortAudioBackend::enumerate_devices () const
156 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
157 return std::vector<AudioBackend::DeviceStatus>();
160 std::vector<AudioBackend::DeviceStatus>
161 PortAudioBackend::enumerate_input_devices () const
164 _input_audio_device_status.clear();
165 std::map<int, std::string> input_devices;
166 _pcmio->input_device_list(input_devices);
168 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
169 if (_input_audio_device == "") _input_audio_device = i->second;
170 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
172 return _input_audio_device_status;
175 std::vector<AudioBackend::DeviceStatus>
176 PortAudioBackend::enumerate_output_devices () const
179 _output_audio_device_status.clear();
180 std::map<int, std::string> output_devices;
181 _pcmio->output_device_list(output_devices);
183 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
184 if (_output_audio_device == "") _output_audio_device = i->second;
185 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
187 return _output_audio_device_status;
191 PortAudioBackend::available_sample_rates (const std::string&) const
193 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
194 std::vector<float> sr;
195 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
199 std::vector<uint32_t>
200 PortAudioBackend::available_buffer_sizes (const std::string&) const
202 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
203 std::vector<uint32_t> bs;
204 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
209 PortAudioBackend::available_input_channel_count (const std::string&) const
211 return 128; // TODO query current device
215 PortAudioBackend::available_output_channel_count (const std::string&) const
217 return 128; // TODO query current device
221 PortAudioBackend::can_change_sample_rate_when_running () const
227 PortAudioBackend::can_change_buffer_size_when_running () const
229 return false; // TODO
233 PortAudioBackend::set_device_name (const std::string& d)
235 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
240 PortAudioBackend::set_input_device_name (const std::string& d)
242 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
243 _input_audio_device = d;
248 PortAudioBackend::set_output_device_name (const std::string& d)
250 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
251 _output_audio_device = d;
256 PortAudioBackend::set_sample_rate (float sr)
258 if (sr <= 0) { return -1; }
259 // TODO check if it's in the list of valid SR
261 engine.sample_rate_change (sr);
266 PortAudioBackend::set_buffer_size (uint32_t bs)
268 if (bs <= 0 || bs >= _max_buffer_size) {
271 _samples_per_period = bs;
272 engine.buffer_size_change (bs);
277 PortAudioBackend::set_interleaved (bool yn)
279 if (!yn) { return 0; }
284 PortAudioBackend::set_input_channels (uint32_t cc)
291 PortAudioBackend::set_output_channels (uint32_t cc)
298 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
300 _systemic_audio_input_latency = sl;
305 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
307 _systemic_audio_output_latency = sl;
311 /* Retrieving parameters */
313 PortAudioBackend::device_name () const
319 PortAudioBackend::input_device_name () const
321 return _input_audio_device;
325 PortAudioBackend::output_device_name () const
327 return _output_audio_device;
331 PortAudioBackend::sample_rate () const
337 PortAudioBackend::buffer_size () const
339 return _samples_per_period;
343 PortAudioBackend::interleaved () const
349 PortAudioBackend::input_channels () const
355 PortAudioBackend::output_channels () const
361 PortAudioBackend::systemic_input_latency () const
363 return _systemic_audio_input_latency;
367 PortAudioBackend::systemic_output_latency () const
369 return _systemic_audio_output_latency;
374 std::vector<std::string>
375 PortAudioBackend::enumerate_midi_options () const
377 if (_midi_options.empty()) {
378 _midi_options.push_back (winmme_driver_name);
379 _midi_options.push_back (_("None"));
381 return _midi_options;
385 PortAudioBackend::set_midi_option (const std::string& opt)
387 if (opt != _("None") && opt != winmme_driver_name) {
390 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
391 _midi_driver_option = opt;
396 PortAudioBackend::midi_option () const
398 return _midi_driver_option;
403 static void * pthread_process (void *arg)
405 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
406 d->main_process_thread ();
412 PortAudioBackend::_start (bool for_latency_measurement)
414 if (!_active && _run) {
415 // recover from 'halted', reap threads
419 if (_active || _run) {
420 PBD::error << _("PortAudioBackend: already active.") << endmsg;
425 PBD::warning << _("PortAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
426 _system_inputs.clear();
427 _system_outputs.clear();
428 _system_midi_in.clear();
429 _system_midi_out.clear();
433 /* reset internal state */
435 _freewheeling = false;
438 _pcmio->pcm_setup (name_to_id(_input_audio_device), name_to_id(_output_audio_device), _samplerate, _samples_per_period);
440 switch (_pcmio->state ()) {
441 case 0: /* OK */ break;
442 case -1: PBD::error << _("PortAudioBackend: failed to open device.") << endmsg; break;
443 default: PBD::error << _("PortAudioBackend: initialization failed.") << endmsg; break;
445 if (_pcmio->state ()) {
449 if (_n_outputs != _pcmio->n_playback_channels ()) {
450 _n_outputs = _pcmio->n_playback_channels ();
451 PBD::info << _("PortAudioBackend: adjusted output channel count to match device.") << endmsg;
454 if (_n_inputs != _pcmio->n_capture_channels ()) {
455 _n_inputs = _pcmio->n_capture_channels ();
456 PBD::info << _("PortAudioBackend: adjusted input channel count to match device.") << endmsg;
459 if (_pcmio->samples_per_period() != _samples_per_period) {
460 _samples_per_period = _pcmio->samples_per_period();
461 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
465 if (_pcmio->sample_rate() != _samplerate) {
466 _samplerate = _pcmio->sample_rate();
467 engine.sample_rate_change (_samplerate);
468 PBD::warning << _("PortAudioBackend: sample rate does not match.") << endmsg;
471 _measure_latency = for_latency_measurement;
474 _port_change_flag = false;
476 if (_midi_driver_option == winmme_driver_name) {
477 _midiio->set_enabled(true);
478 //_midiio->set_port_changed_callback(midi_port_change, this);
479 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
482 m_cycle_timer.set_samplerate(_samplerate);
483 m_cycle_timer.set_samples_per_cycle(_samples_per_period);
485 DEBUG_MIDI ("Registering MIDI ports\n");
487 if (register_system_midi_ports () != 0) {
488 PBD::error << _ ("PortAudioBackend: failed to register system midi ports.")
494 DEBUG_AUDIO ("Registering Audio ports\n");
496 if (register_system_audio_ports()) {
497 PBD::error << _("PortAudioBackend: failed to register system audio ports.") << endmsg;
502 engine.sample_rate_change (_samplerate);
503 engine.buffer_size_change (_samples_per_period);
505 if (engine.reestablish_ports ()) {
506 PBD::error << _("PortAudioBackend: Could not re-establish ports.") << endmsg;
511 engine.reconnect_ports ();
513 _port_change_flag = false;
515 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
516 &_main_thread, pthread_process, this))
518 if (pthread_create (&_main_thread, NULL, pthread_process, this))
520 PBD::error << _("PortAudioBackend: failed to create process thread.") << endmsg;
524 PBD::warning << _("PortAudioBackend: cannot acquire realtime permissions.") << endmsg;
529 while (!_active && --timeout > 0) { Glib::usleep (1000); }
531 if (timeout == 0 || !_active) {
532 PBD::error << _("PortAudioBackend: failed to start.") << endmsg;
544 PortAudioBackend::stop ()
552 if (pthread_join (_main_thread, &status)) {
553 PBD::error << _("PortAudioBackend: failed to terminate.") << endmsg;
560 return (_active == false) ? 0 : -1;
564 PortAudioBackend::freewheel (bool onoff)
566 if (onoff == _freewheeling) {
569 _freewheeling = onoff;
574 PortAudioBackend::dsp_load () const
576 return 100.f * _dsp_load;
580 PortAudioBackend::raw_buffer_size (DataType t)
583 case DataType::AUDIO:
584 return _samples_per_period * sizeof(Sample);
586 return _max_buffer_size; // XXX not really limited
593 PortAudioBackend::sample_time ()
595 return _processed_samples;
599 PortAudioBackend::sample_time_at_cycle_start ()
601 return _processed_samples;
605 PortAudioBackend::samples_since_cycle_start ()
607 if (!_active || !_run || _freewheeling || _freewheel) {
610 if (!m_cycle_timer.valid()) {
614 return m_cycle_timer.samples_since_cycle_start (utils::get_microseconds());
618 PortAudioBackend::name_to_id(std::string device_name) const {
619 uint32_t device_id = UINT32_MAX;
620 std::map<int, std::string> devices;
621 _pcmio->input_device_list(devices);
622 _pcmio->output_device_list(devices);
624 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
625 if (i->second == device_name) {
626 device_id = i->first;
634 PortAudioBackend::portaudio_process_thread (void *arg)
636 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
637 boost::function<void ()> f = td->f;
644 PortAudioBackend::create_process_thread (boost::function<void()> func)
648 size_t stacksize = 100000;
650 ThreadData* td = new ThreadData (this, func, stacksize);
652 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
653 &thread_id, portaudio_process_thread, td)) {
654 pthread_attr_init (&attr);
655 pthread_attr_setstacksize (&attr, stacksize);
656 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
657 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
658 pthread_attr_destroy (&attr);
661 pthread_attr_destroy (&attr);
664 _threads.push_back (thread_id);
669 PortAudioBackend::join_process_threads ()
673 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
676 if (pthread_join (*i, &status)) {
677 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
686 PortAudioBackend::in_process_thread ()
688 if (pthread_equal (_main_thread, pthread_self()) != 0) {
692 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
694 if (pthread_equal (*i, pthread_self ()) != 0) {
702 PortAudioBackend::process_thread_count ()
704 return _threads.size ();
708 PortAudioBackend::update_latencies ()
710 // trigger latency callback in RT thread (locked graph)
711 port_connect_add_remove_callback();
717 PortAudioBackend::private_handle () const
723 PortAudioBackend::my_name () const
725 return _instance_name;
729 PortAudioBackend::available () const
731 return _run && _active;
735 PortAudioBackend::port_name_size () const
741 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
743 if (!valid_port (port)) {
744 PBD::error << _("PortAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
747 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
751 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
753 if (!valid_port (port)) {
754 PBD::error << _("PortAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
755 return std::string ();
757 return static_cast<PamPort*>(port)->name ();
760 PortEngine::PortHandle
761 PortAudioBackend::get_port_by_name (const std::string& name) const
763 PortHandle port = (PortHandle) find_port (name);
768 PortAudioBackend::get_ports (
769 const std::string& port_name_pattern,
770 DataType type, PortFlags flags,
771 std::vector<std::string>& port_names) const
775 bool use_regexp = false;
776 if (port_name_pattern.size () > 0) {
777 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
781 for (size_t i = 0; i < _ports.size (); ++i) {
782 PamPort* port = _ports[i];
783 if ((port->type () == type) && flags == (port->flags () & flags)) {
784 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
785 port_names.push_back (port->name ());
791 regfree (&port_regex);
797 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
799 if (!valid_port (port)) {
800 return DataType::NIL;
802 return static_cast<PamPort*>(port)->type ();
805 PortEngine::PortHandle
806 PortAudioBackend::register_port (
807 const std::string& name,
808 ARDOUR::DataType type,
809 ARDOUR::PortFlags flags)
811 if (name.size () == 0) { return 0; }
812 if (flags & IsPhysical) { return 0; }
813 return add_port (_instance_name + ":" + name, type, flags);
816 PortEngine::PortHandle
817 PortAudioBackend::add_port (
818 const std::string& name,
819 ARDOUR::DataType type,
820 ARDOUR::PortFlags flags)
822 assert(name.size ());
823 if (find_port (name)) {
824 PBD::error << _("PortAudioBackend::register_port: Port already exists:")
825 << " (" << name << ")" << endmsg;
828 PamPort* port = NULL;
830 case DataType::AUDIO:
831 port = new PortAudioPort (*this, name, flags);
834 port = new PortMidiPort (*this, name, flags);
837 PBD::error << _("PortAudioBackend::register_port: Invalid Data Type.") << endmsg;
841 _ports.push_back (port);
847 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
852 PamPort* port = static_cast<PamPort*>(port_handle);
853 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
854 if (i == _ports.end ()) {
855 PBD::error << _("PortAudioBackend::unregister_port: Failed to find port") << endmsg;
858 disconnect_all(port_handle);
864 PortAudioBackend::register_system_audio_ports()
868 const uint32_t a_ins = _n_inputs;
869 const uint32_t a_out = _n_outputs;
871 // XXX PA reported stream latencies don't match measurements
872 const uint32_t portaudio_reported_input_latency = _samples_per_period ; // _pcmio->capture_latency();
873 const uint32_t portaudio_reported_output_latency = /* _samples_per_period + */ _pcmio->playback_latency();
876 lr.min = lr.max = portaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
877 for (uint32_t i = 0; i < a_ins; ++i) {
879 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
880 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
882 set_latency_range (p, false, lr);
883 _system_inputs.push_back(static_cast<PortAudioPort*>(p));
886 lr.min = lr.max = portaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
887 for (uint32_t i = 0; i < a_out; ++i) {
889 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
890 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
892 set_latency_range (p, true, lr);
893 _system_outputs.push_back(static_cast<PamPort*>(p));
899 PortAudioBackend::register_system_midi_ports()
901 if (_midi_driver_option == _("None")) {
902 DEBUG_MIDI ("No MIDI backend selected, not system midi ports available\n");
907 lr.min = lr.max = _samples_per_period;
909 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
911 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
914 std::string port_name = "system_midi:" + (*i)->name() + " capture";
918 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
920 set_latency_range (p, false, lr);
921 _system_midi_in.push_back (static_cast<PortMidiPort*>(p));
922 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
925 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
927 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
930 std::string port_name = "system_midi:" + (*i)->name() + " playback";
934 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
936 set_latency_range (p, false, lr);
937 static_cast<PortMidiPort*>(p)->set_n_periods(2);
938 _system_midi_out.push_back (static_cast<PortMidiPort*>(p));
939 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
945 PortAudioBackend::unregister_ports (bool system_only)
948 _system_inputs.clear();
949 _system_outputs.clear();
950 _system_midi_in.clear();
951 _system_midi_out.clear();
952 while (i < _ports.size ()) {
953 PamPort* port = _ports[i];
954 if (! system_only || (port->is_physical () && port->is_terminal ())) {
955 port->disconnect_all ();
957 _ports.erase (_ports.begin() + i);
965 PortAudioBackend::connect (const std::string& src, const std::string& dst)
967 PamPort* src_port = find_port (src);
968 PamPort* dst_port = find_port (dst);
971 PBD::error << _("PortAudioBackend::connect: Invalid Source port:")
972 << " (" << src <<")" << endmsg;
976 PBD::error << _("PortAudioBackend::connect: Invalid Destination port:")
977 << " (" << dst <<")" << endmsg;
980 return src_port->connect (dst_port);
984 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
986 PamPort* src_port = find_port (src);
987 PamPort* dst_port = find_port (dst);
989 if (!src_port || !dst_port) {
990 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
993 return src_port->disconnect (dst_port);
997 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
999 PamPort* dst_port = find_port (dst);
1000 if (!valid_port (src)) {
1001 PBD::error << _("PortAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1005 PBD::error << _("PortAudioBackend::connect: Invalid Destination Port")
1006 << " (" << dst << ")" << endmsg;
1009 return static_cast<PamPort*>(src)->connect (dst_port);
1013 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1015 PamPort* dst_port = find_port (dst);
1016 if (!valid_port (src) || !dst_port) {
1017 PBD::error << _("PortAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1020 return static_cast<PamPort*>(src)->disconnect (dst_port);
1024 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1026 if (!valid_port (port)) {
1027 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1030 static_cast<PamPort*>(port)->disconnect_all ();
1035 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1037 if (!valid_port (port)) {
1038 PBD::error << _("PortAudioBackend::disconnect_all: Invalid Port") << endmsg;
1041 return static_cast<PamPort*>(port)->is_connected ();
1045 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1047 PamPort* dst_port = find_port (dst);
1048 if (!valid_port (src) || !dst_port) {
1049 PBD::error << _("PortAudioBackend::connected_to: Invalid Port") << endmsg;
1052 return static_cast<PamPort*>(src)->is_connected (dst_port);
1056 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1058 if (!valid_port (port)) {
1059 PBD::error << _("PortAudioBackend::physically_connected: Invalid Port") << endmsg;
1062 return static_cast<PamPort*>(port)->is_physically_connected ();
1066 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1068 if (!valid_port (port)) {
1069 PBD::error << _("PortAudioBackend::get_connections: Invalid Port") << endmsg;
1073 assert (0 == names.size ());
1075 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1077 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1078 names.push_back ((*i)->name ());
1081 return (int)names.size ();
1086 PortAudioBackend::midi_event_get (
1087 pframes_t& timestamp,
1088 size_t& size, uint8_t** buf, void* port_buffer,
1089 uint32_t event_index)
1091 if (!buf || !port_buffer) return -1;
1092 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1093 if (event_index >= source.size ()) {
1096 PortMidiEvent * const event = source[event_index].get ();
1098 timestamp = event->timestamp ();
1099 size = event->size ();
1100 *buf = event->data ();
1105 PortAudioBackend::midi_event_put (
1107 pframes_t timestamp,
1108 const uint8_t* buffer, size_t size)
1110 if (!buffer || !port_buffer) return -1;
1111 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1112 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1113 // nevermind, ::get_buffer() sorts events
1114 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1115 (pframes_t)dst.back ()->timestamp (),
1118 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1123 PortAudioBackend::get_midi_event_count (void* port_buffer)
1125 if (!port_buffer) return 0;
1126 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1130 PortAudioBackend::midi_clear (void* port_buffer)
1132 if (!port_buffer) return;
1133 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1141 PortAudioBackend::can_monitor_input () const
1147 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1153 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1159 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1164 /* Latency management */
1167 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1169 if (!valid_port (port)) {
1170 PBD::error << _("PamPort::set_latency_range (): invalid port.") << endmsg;
1172 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1176 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1179 if (!valid_port (port)) {
1180 PBD::error << _("PamPort::get_latency_range (): invalid port.") << endmsg;
1185 PamPort* p = static_cast<PamPort*>(port);
1188 r = p->latency_range (for_playback);
1190 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1191 if (p->is_input() && for_playback) {
1192 r.min += _samples_per_period;
1193 r.max += _samples_per_period;
1195 if (p->is_output() && !for_playback) {
1196 r.min += _samples_per_period;
1197 r.max += _samples_per_period;
1203 /* Discovering physical ports */
1206 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1208 if (!valid_port (port)) {
1209 PBD::error << _("PamPort::port_is_physical (): invalid port.") << endmsg;
1212 return static_cast<PamPort*>(port)->is_physical ();
1216 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1218 for (size_t i = 0; i < _ports.size (); ++i) {
1219 PamPort* port = _ports[i];
1220 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1221 port_names.push_back (port->name ());
1227 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1229 for (size_t i = 0; i < _ports.size (); ++i) {
1230 PamPort* port = _ports[i];
1231 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1232 port_names.push_back (port->name ());
1238 PortAudioBackend::n_physical_outputs () const
1242 for (size_t i = 0; i < _ports.size (); ++i) {
1243 PamPort* port = _ports[i];
1244 if (port->is_output () && port->is_physical ()) {
1245 switch (port->type ()) {
1246 case DataType::AUDIO: ++n_audio; break;
1247 case DataType::MIDI: ++n_midi; break;
1253 cc.set (DataType::AUDIO, n_audio);
1254 cc.set (DataType::MIDI, n_midi);
1259 PortAudioBackend::n_physical_inputs () const
1263 for (size_t i = 0; i < _ports.size (); ++i) {
1264 PamPort* port = _ports[i];
1265 if (port->is_input () && port->is_physical ()) {
1266 switch (port->type ()) {
1267 case DataType::AUDIO: ++n_audio; break;
1268 case DataType::MIDI: ++n_midi; break;
1274 cc.set (DataType::AUDIO, n_audio);
1275 cc.set (DataType::MIDI, n_midi);
1279 /* Getting access to the data buffer for a port */
1282 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1284 if (!port || !valid_port (port)) return NULL;
1285 return static_cast<PamPort*>(port)->get_buffer (nframes);
1290 PortAudioBackend::main_process_thread ()
1292 AudioEngine::thread_init_callback (this);
1294 _processed_samples = 0;
1296 uint64_t clock1, clock2;
1297 int64_t min_elapsed_us = 1000000;
1298 int64_t max_elapsed_us = 0;
1299 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1300 // const int64_t nomial_time = m_cycle_timer.get_length_us();
1302 manager.registration_callback();
1303 manager.graph_order_callback();
1305 if (_pcmio->pcm_start()) {
1306 _pcmio->pcm_stop ();
1308 engine.halted_callback("PortAudio I/O error.");
1313 if (_freewheeling != _freewheel) {
1314 _freewheel = _freewheeling;
1315 engine.freewheel_callback (_freewheel);
1320 switch (_pcmio->next_cycle (_samples_per_period)) {
1324 DEBUG_AUDIO ("PortAudio: Xrun\n");
1328 PBD::error << _("PortAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
1333 clock1 = utils::get_microseconds ();
1337 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1338 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
1341 /* de-queue incoming midi*/
1343 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1344 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1347 pframes_t sample_offset;
1349 size_t size = sizeof(data);
1350 while (_midiio->dequeue_input_event (i,
1351 m_cycle_timer.get_start (),
1352 m_cycle_timer.get_next_start (),
1356 sample_offset = m_cycle_timer.samples_since_cycle_start (timestamp);
1357 midi_event_put (mbuf, sample_offset, data, size);
1358 DEBUG_MIDI (string_compose ("Dequeuing incoming MIDI data for device: %1 "
1359 "sample_offset: %2 timestamp: %3, size: %4\n",
1360 _midiio->get_inputs ()[i]->name (),
1364 size = sizeof(data);
1368 /* clear output buffers */
1369 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1370 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1373 m_last_cycle_start = m_cycle_timer.get_start ();
1374 m_cycle_timer.reset_start(utils::get_microseconds());
1377 uint64_t cycle_diff_us = (m_cycle_timer.get_start () - m_last_cycle_start);
1378 int64_t deviation_us = (cycle_diff_us - m_cycle_timer.get_length_us());
1379 m_total_deviation_us += std::abs(deviation_us);
1380 m_max_deviation_us =
1381 std::max (m_max_deviation_us, (uint64_t)std::abs (deviation_us));
1383 if ((m_cycle_count % 1000) == 0) {
1384 uint64_t mean_deviation_us = m_total_deviation_us / m_cycle_count;
1386 string_compose ("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1387 mean_deviation_us * 1e-3,
1388 m_max_deviation_us * 1e-3));
1391 if (std::abs(deviation_us) > m_cycle_timer.get_length_us()) {
1392 DEBUG_TIMING (string_compose (
1393 "time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1394 cycle_diff_us * 1e-3,
1395 m_cycle_timer.get_length_us () * 1e-3,
1396 deviation_us * 1e-3));
1399 /* call engine process callback */
1400 if (engine.process_callback (_samples_per_period)) {
1401 _pcmio->pcm_stop ();
1406 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1407 static_cast<PortMidiPort*>(*it)->next_period();
1409 /* queue outgoing midi */
1411 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1412 const PortMidiBuffer* src = static_cast<const PortMidiPort*>(*it)->const_buffer();
1414 for (PortMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1415 uint64_t timestamp =
1416 m_cycle_timer.timestamp_from_sample_offset ((*mit)->timestamp ());
1418 string_compose ("Queuing outgoing MIDI data for device: "
1419 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1420 _midiio->get_outputs ()[i]->name (),
1421 (*mit)->timestamp (),
1424 _midiio->enqueue_output_event (
1425 i, timestamp, (*mit)->data (), (*mit)->size ());
1429 /* write back audio */
1431 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1432 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
1435 _processed_samples += _samples_per_period;
1437 /* calculate DSP load */
1438 clock2 = utils::get_microseconds ();
1439 const int64_t elapsed_time = clock2 - clock1;
1440 _dsp_load = elapsed_time / (float) nomial_time;
1442 max_elapsed_us = std::max (elapsed_time, max_elapsed_us);
1443 min_elapsed_us = std::min (elapsed_time, min_elapsed_us);
1444 if ((m_cycle_count % 1000) == 0) {
1446 string_compose ("Elapsed process time(usecs) max: %1, min: %2\n",
1454 // zero audio input buffers
1455 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1456 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1459 clock1 = utils::get_microseconds ();
1461 // TODO clear midi or stop midi recv when entering fwheelin'
1463 if (engine.process_callback (_samples_per_period)) {
1464 _pcmio->pcm_stop ();
1469 // drop all outgoing MIDI messages
1470 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1471 void *bptr = (*it)->get_buffer(0);
1476 Glib::usleep (100); // don't hog cpu
1479 bool connections_changed = false;
1480 bool ports_changed = false;
1481 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1482 if (_port_change_flag) {
1483 ports_changed = true;
1484 _port_change_flag = false;
1486 if (!_port_connection_queue.empty ()) {
1487 connections_changed = true;
1489 while (!_port_connection_queue.empty ()) {
1490 PortConnectData *c = _port_connection_queue.back ();
1491 manager.connect_callback (c->a, c->b, c->c);
1492 _port_connection_queue.pop_back ();
1495 pthread_mutex_unlock (&_port_callback_mutex);
1497 if (ports_changed) {
1498 manager.registration_callback();
1500 if (connections_changed) {
1501 manager.graph_order_callback();
1503 if (connections_changed || ports_changed) {
1504 engine.latency_callback(false);
1505 engine.latency_callback(true);
1509 _pcmio->pcm_stop ();
1512 engine.halted_callback("PortAudio I/O error.");
1518 /******************************************************************************/
1520 static boost::shared_ptr<PortAudioBackend> _instance;
1522 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1523 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1524 static int deinstantiate ();
1525 static bool already_configured ();
1526 static bool available ();
1528 static ARDOUR::AudioBackendInfo _descriptor = {
1537 static boost::shared_ptr<AudioBackend>
1538 backend_factory (AudioEngine& e)
1541 _instance.reset (new PortAudioBackend (e, _descriptor));
1547 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1549 s_instance_name = arg1;
1561 already_configured ()
1572 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1574 return &_descriptor;
1578 /******************************************************************************/
1579 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1584 _capture_latency_range.min = 0;
1585 _capture_latency_range.max = 0;
1586 _playback_latency_range.min = 0;
1587 _playback_latency_range.max = 0;
1590 PamPort::~PamPort () {
1595 int PamPort::connect (PamPort *port)
1598 PBD::error << _("PamPort::connect (): invalid (null) port") << endmsg;
1602 if (type () != port->type ()) {
1603 PBD::error << _("PamPort::connect (): wrong port-type") << endmsg;
1607 if (is_output () && port->is_output ()) {
1608 PBD::error << _("PamPort::connect (): cannot inter-connect output ports.") << endmsg;
1612 if (is_input () && port->is_input ()) {
1613 PBD::error << _("PamPort::connect (): cannot inter-connect input ports.") << endmsg;
1618 PBD::error << _("PamPort::connect (): cannot self-connect ports.") << endmsg;
1622 if (is_connected (port)) {
1623 #if 0 // don't bother to warn about this for now. just ignore it
1624 PBD::error << _("PamPort::connect (): ports are already connected:")
1625 << " (" << name () << ") -> (" << port->name () << ")"
1631 _connect (port, true);
1636 void PamPort::_connect (PamPort *port, bool callback)
1638 _connections.push_back (port);
1640 port->_connect (this, false);
1641 _osx_backend.port_connect_callback (name(), port->name(), true);
1645 int PamPort::disconnect (PamPort *port)
1648 PBD::error << _("PamPort::disconnect (): invalid (null) port") << endmsg;
1652 if (!is_connected (port)) {
1653 PBD::error << _("PamPort::disconnect (): ports are not connected:")
1654 << " (" << name () << ") -> (" << port->name () << ")"
1658 _disconnect (port, true);
1662 void PamPort::_disconnect (PamPort *port, bool callback)
1664 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1666 assert (it != _connections.end ());
1668 _connections.erase (it);
1671 port->_disconnect (this, false);
1672 _osx_backend.port_connect_callback (name(), port->name(), false);
1677 void PamPort::disconnect_all ()
1679 while (!_connections.empty ()) {
1680 _connections.back ()->_disconnect (this, false);
1681 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1682 _connections.pop_back ();
1687 PamPort::is_connected (const PamPort *port) const
1689 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1692 bool PamPort::is_physically_connected () const
1694 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1695 if ((*it)->is_physical ()) {
1702 /******************************************************************************/
1704 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1705 : PamPort (b, name, flags)
1707 memset (_buffer, 0, sizeof (_buffer));
1708 #ifndef PLATFORM_WINDOWS
1709 mlock(_buffer, sizeof (_buffer));
1713 PortAudioPort::~PortAudioPort () { }
1715 void* PortAudioPort::get_buffer (pframes_t n_samples)
1718 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
1719 if (it == get_connections ().end ()) {
1720 memset (_buffer, 0, n_samples * sizeof (Sample));
1722 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
1723 assert (source && source->is_output ());
1724 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1725 while (++it != get_connections ().end ()) {
1726 source = static_cast<const PortAudioPort*>(*it);
1727 assert (source && source->is_output ());
1728 Sample* dst = buffer ();
1729 const Sample* src = source->const_buffer ();
1730 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1740 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
1741 : PamPort (b, name, flags)
1745 _buffer[0].clear ();
1746 _buffer[1].clear ();
1749 PortMidiPort::~PortMidiPort () { }
1751 struct MidiEventSorter {
1752 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
1757 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
1760 (_buffer[_bufperiod]).clear ();
1761 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
1762 i != get_connections ().end ();
1764 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
1765 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1766 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
1769 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1771 return &(_buffer[_bufperiod]);
1774 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1776 , _timestamp (timestamp)
1780 _data = (uint8_t*) malloc (size);
1781 memcpy (_data, data, size);
1785 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
1786 : _size (other.size ())
1787 , _timestamp (other.timestamp ())
1790 if (other.size () && other.const_data ()) {
1791 _data = (uint8_t*) malloc (other.size ());
1792 memcpy (_data, other.const_data (), other.size ());
1796 PortMidiEvent::~PortMidiEvent () {