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
33 #include "portaudio_backend.h"
34 #include "rt_thread.h"
36 #include "pbd/compose.h"
37 #include "pbd/error.h"
38 #include "pbd/file_utils.h"
39 #include "pbd/windows_timer_utils.h"
40 #include "pbd/windows_mmcss.h"
42 #include "ardour/filesystem_paths.h"
43 #include "ardour/port_manager.h"
46 #include "audio_utils.h"
50 using namespace ARDOUR;
54 const char * const winmme_driver_name = X_("WinMME");
58 static std::string s_instance_name;
59 size_t PortAudioBackend::_max_buffer_size = 8192;
60 std::vector<std::string> PortAudioBackend::_midi_options;
61 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_input_audio_device_status;
62 std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_output_audio_device_status;
64 PortAudioBackend::PortAudioBackend (AudioEngine& e, AudioBackendInfo& info)
65 : AudioBackend (e, info)
70 , _freewheeling (false)
71 , _freewheel_ack (false)
72 , _reinit_thread_callback (false)
73 , _measure_latency (false)
75 , _total_deviation_us(0)
76 , _max_deviation_us(0)
77 , _input_audio_device("")
78 , _output_audio_device("")
79 , _midi_driver_option(get_standard_device_name(DeviceNone))
81 , _samples_per_period (1024)
84 , _systemic_audio_input_latency (0)
85 , _systemic_audio_output_latency (0)
87 , _processed_samples (0)
88 , _port_change_flag (false)
90 _instance_name = s_instance_name;
91 pthread_mutex_init (&_port_callback_mutex, 0);
92 pthread_mutex_init (&_freewheel_mutex, 0);
93 pthread_cond_init (&_freewheel_signal, 0);
95 _pcmio = new PortAudioIO ();
96 _midiio = new WinMMEMidiIO ();
99 PortAudioBackend::~PortAudioBackend ()
101 delete _pcmio; _pcmio = 0;
102 delete _midiio; _midiio = 0;
104 pthread_mutex_destroy (&_port_callback_mutex);
105 pthread_mutex_destroy (&_freewheel_mutex);
106 pthread_cond_destroy (&_freewheel_signal);
109 /* AUDIOBACKEND API */
112 PortAudioBackend::name () const
114 return X_("PortAudio");
118 PortAudioBackend::is_realtime () const
124 PortAudioBackend::requires_driver_selection() const
126 // we could do this but implementation would need changing
128 if (enumerate_drivers().size() == 1) {
135 std::vector<std::string>
136 PortAudioBackend::enumerate_drivers () const
138 DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
139 std::vector<std::string> currently_available;
140 _pcmio->host_api_list (currently_available);
141 return currently_available;
145 PortAudioBackend::set_driver (const std::string& name)
147 DEBUG_AUDIO (string_compose ("Portaudio: set_driver %1 \n", name));
148 if (!_pcmio->set_host_api (name)) {
149 DEBUG_AUDIO (string_compose ("Portaudio: Unable to set_driver %1 \n", name));
152 _pcmio->update_devices();
157 PortAudioBackend::update_devices ()
159 return _pcmio->update_devices();
163 PortAudioBackend::driver_name () const
165 std::string driver_name = _pcmio->get_host_api ();
166 DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
171 PortAudioBackend::use_separate_input_and_output_devices () const
176 std::vector<AudioBackend::DeviceStatus>
177 PortAudioBackend::enumerate_devices () const
179 DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
180 return std::vector<AudioBackend::DeviceStatus>();
183 std::vector<AudioBackend::DeviceStatus>
184 PortAudioBackend::enumerate_input_devices () const
186 _input_audio_device_status.clear();
187 std::map<int, std::string> input_devices;
188 _pcmio->input_device_list(input_devices);
190 for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
191 if (_input_audio_device == "") _input_audio_device = i->second;
192 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
194 return _input_audio_device_status;
197 std::vector<AudioBackend::DeviceStatus>
198 PortAudioBackend::enumerate_output_devices () const
200 _output_audio_device_status.clear();
201 std::map<int, std::string> output_devices;
202 _pcmio->output_device_list(output_devices);
204 for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
205 if (_output_audio_device == "") _output_audio_device = i->second;
206 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
208 return _output_audio_device_status;
212 PortAudioBackend::available_sample_rates (const std::string&) const
214 DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
215 std::vector<float> sr;
216 _pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
220 std::vector<uint32_t>
221 PortAudioBackend::available_buffer_sizes (const std::string&) const
223 DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
224 std::vector<uint32_t> bs;
225 _pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
230 PortAudioBackend::available_input_channel_count (const std::string&) const
232 return 128; // TODO query current device
236 PortAudioBackend::available_output_channel_count (const std::string&) const
238 return 128; // TODO query current device
242 PortAudioBackend::can_change_sample_rate_when_running () const
248 PortAudioBackend::can_change_buffer_size_when_running () const
250 return false; // TODO
254 PortAudioBackend::set_device_name (const std::string& d)
256 DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
261 PortAudioBackend::set_input_device_name (const std::string& d)
263 DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
264 _input_audio_device = d;
269 PortAudioBackend::set_output_device_name (const std::string& d)
271 DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
272 _output_audio_device = d;
277 PortAudioBackend::set_sample_rate (float sr)
279 if (sr <= 0) { return -1; }
280 // TODO check if it's in the list of valid SR
282 engine.sample_rate_change (sr);
287 PortAudioBackend::set_buffer_size (uint32_t bs)
289 if (bs <= 0 || bs >= _max_buffer_size) {
292 _samples_per_period = bs;
293 engine.buffer_size_change (bs);
298 PortAudioBackend::set_interleaved (bool yn)
300 if (!yn) { return 0; }
305 PortAudioBackend::set_input_channels (uint32_t cc)
312 PortAudioBackend::set_output_channels (uint32_t cc)
319 PortAudioBackend::set_systemic_input_latency (uint32_t sl)
321 _systemic_audio_input_latency = sl;
326 PortAudioBackend::set_systemic_output_latency (uint32_t sl)
328 _systemic_audio_output_latency = sl;
332 /* Retrieving parameters */
334 PortAudioBackend::device_name () const
340 PortAudioBackend::input_device_name () const
342 return _input_audio_device;
346 PortAudioBackend::output_device_name () const
348 return _output_audio_device;
352 PortAudioBackend::sample_rate () const
358 PortAudioBackend::buffer_size () const
360 return _samples_per_period;
364 PortAudioBackend::interleaved () const
370 PortAudioBackend::input_channels () const
376 PortAudioBackend::output_channels () const
382 PortAudioBackend::systemic_input_latency () const
384 return _systemic_audio_input_latency;
388 PortAudioBackend::systemic_output_latency () const
390 return _systemic_audio_output_latency;
394 PortAudioBackend::control_app_name () const
396 return _pcmio->control_app_name (name_to_id (_input_audio_device));
400 PortAudioBackend::launch_control_app ()
402 return _pcmio->launch_control_app (name_to_id(_input_audio_device));
407 std::vector<std::string>
408 PortAudioBackend::enumerate_midi_options () const
410 if (_midi_options.empty()) {
411 _midi_options.push_back (winmme_driver_name);
412 _midi_options.push_back (get_standard_device_name(DeviceNone));
414 return _midi_options;
418 PortAudioBackend::set_midi_option (const std::string& opt)
420 if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
423 DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
424 _midi_driver_option = opt;
429 PortAudioBackend::midi_option () const
431 return _midi_driver_option;
436 static void * blocking_thread_func (void *arg)
438 PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
439 d->blocking_process_thread ();
445 PortAudioBackend::engine_halted ()
447 return !_active && _run;
451 PortAudioBackend::running ()
453 return _active || _run;
457 PortAudioBackend::_start (bool for_latency_measurement)
459 if (engine_halted()) {
464 DEBUG_AUDIO("Already started.\n");
465 return BackendReinitializationError;
470 "Recovering from unclean shutdown, port registry is not empty.\n");
471 _system_inputs.clear();
472 _system_outputs.clear();
473 _system_midi_in.clear();
474 _system_midi_out.clear();
478 /* reset internal state */
480 _freewheeling = false;
483 PaErrorCode err = paNoError;
485 #ifdef USE_BLOCKING_API
486 err = _pcmio->open_blocking_stream(name_to_id(_input_audio_device),
487 name_to_id(_output_audio_device),
489 _samples_per_period);
492 err = _pcmio->open_callback_stream(name_to_id(_input_audio_device),
493 name_to_id(_output_audio_device),
501 // reintepret Portaudio error messages
505 case paBadIODeviceCombination:
506 return DeviceConfigurationNotSupportedError;
507 case paInvalidChannelCount:
508 return ChannelCountNotSupportedError;
509 case paInvalidSampleRate:
510 return SampleRateNotSupportedError;
512 return AudioDeviceOpenError;
515 if (_n_outputs != _pcmio->n_playback_channels ()) {
516 _n_outputs = _pcmio->n_playback_channels ();
517 PBD::info << get_error_string(OutputChannelCountNotSupportedError) << endmsg;
520 if (_n_inputs != _pcmio->n_capture_channels ()) {
521 _n_inputs = _pcmio->n_capture_channels ();
522 PBD::info << get_error_string(InputChannelCountNotSupportedError) << endmsg;
525 if (_pcmio->samples_per_period() != _samples_per_period) {
526 _samples_per_period = _pcmio->samples_per_period();
527 PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
531 if (_pcmio->sample_rate() != _samplerate) {
532 _samplerate = _pcmio->sample_rate();
533 engine.sample_rate_change (_samplerate);
534 PBD::warning << get_error_string(SampleRateNotSupportedError) << endmsg;
537 _measure_latency = for_latency_measurement;
540 _port_change_flag = false;
542 if (_midi_driver_option == winmme_driver_name) {
543 _midiio->set_enabled(true);
544 //_midiio->set_port_changed_callback(midi_port_change, this);
545 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
548 _cycle_timer.set_samplerate(_samplerate);
549 _cycle_timer.set_samples_per_cycle(_samples_per_period);
551 _dsp_calc.set_max_time_us (_cycle_timer.get_length_us());
553 DEBUG_MIDI ("Registering MIDI ports\n");
555 if (register_system_midi_ports () != 0) {
556 DEBUG_PORTS("Failed to register system midi ports.\n")
558 return PortRegistrationError;
561 DEBUG_AUDIO ("Registering Audio ports\n");
563 if (register_system_audio_ports()) {
564 DEBUG_PORTS("Failed to register system audio ports.\n");
566 return PortRegistrationError;
569 engine.sample_rate_change (_samplerate);
570 engine.buffer_size_change (_samples_per_period);
572 if (engine.reestablish_ports ()) {
573 DEBUG_PORTS("Could not re-establish ports.\n");
575 return PortReconnectError;
578 engine.reconnect_ports ();
580 _port_change_flag = false;
582 #ifdef USE_BLOCKING_API
583 if (!start_blocking_process_thread()) {
584 return ProcessThreadStartError;
587 if (_pcmio->start_stream() != paNoError) {
588 DEBUG_AUDIO("Unable to start stream\n");
589 return AudioDeviceOpenError;
592 if (!start_freewheel_process_thread()) {
593 DEBUG_AUDIO("Unable to start freewheel thread\n");
595 return ProcessThreadStartError;
603 PortAudioBackend::portaudio_callback(const void* input,
605 unsigned long frame_count,
606 const PaStreamCallbackTimeInfo* time_info,
607 PaStreamCallbackFlags status_flags,
610 PortAudioBackend* pa_backend = static_cast<PortAudioBackend*>(user_data);
612 if (!pa_backend->process_callback((const float*)input,
624 PortAudioBackend::process_callback(const float* input,
626 uint32_t frame_count,
627 const PaStreamCallbackTimeInfo* timeInfo,
628 PaStreamCallbackFlags statusFlags)
632 _dsp_calc.set_start_timestamp_us (PBD::get_microseconds());
634 if (_run && _freewheel && !_freewheel_ack) {
635 // acknowledge freewheeling; hand-over thread ID
636 pthread_mutex_lock (&_freewheel_mutex);
638 DEBUG_AUDIO("Setting _freewheel_ack = true;\n");
639 _freewheel_ack = true;
641 DEBUG_AUDIO("Signalling freewheel thread\n");
642 pthread_cond_signal (&_freewheel_signal);
643 pthread_mutex_unlock (&_freewheel_mutex);
646 if (statusFlags & paInputUnderflow ||
647 statusFlags & paInputOverflow ||
648 statusFlags & paOutputUnderflow ||
649 statusFlags & paOutputOverflow ) {
650 DEBUG_AUDIO("PortAudio: Xrun\n");
655 if (!_run || _freewheel) {
656 memset(output, 0, frame_count * sizeof(float) * _system_outputs.size());
660 bool in_main_thread = pthread_equal(_main_thread, pthread_self());
662 if (_reinit_thread_callback || !in_main_thread) {
663 _reinit_thread_callback = false;
664 _main_thread = pthread_self();
665 AudioEngine::thread_init_callback (this);
668 process_port_connection_changes();
670 return blocking_process_main (input, output);
674 PortAudioBackend::start_blocking_process_thread ()
676 if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
677 &_main_blocking_thread, blocking_thread_func, this))
679 if (pthread_create (&_main_blocking_thread, NULL, blocking_thread_func, this))
681 DEBUG_AUDIO("Failed to create main audio thread\n");
685 PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
690 while (!_active && --timeout > 0) { Glib::usleep (1000); }
692 if (timeout == 0 || !_active) {
693 DEBUG_AUDIO("Failed to start main audio thread\n");
694 _pcmio->close_stream();
704 PortAudioBackend::stop_blocking_process_thread ()
708 if (pthread_join (_main_blocking_thread, &status)) {
709 DEBUG_AUDIO("Failed to stop main audio thread\n");
717 PortAudioBackend::stop ()
727 #ifdef USE_BLOCKING_API
728 if (!stop_blocking_process_thread ()) {
732 _pcmio->close_stream ();
735 if (!stop_freewheel_process_thread ()) {
743 return (_active == false) ? 0 : -1;
746 static void* freewheel_thread(void* arg)
748 PortAudioBackend* d = static_cast<PortAudioBackend*>(arg);
749 d->freewheel_process_thread ();
755 PortAudioBackend::start_freewheel_process_thread ()
757 if (pthread_create(&_pthread_freewheel, NULL, freewheel_thread, this)) {
758 DEBUG_AUDIO("Failed to create main audio thread\n");
763 while (!_freewheel_thread_active && --timeout > 0) { Glib::usleep (1000); }
765 if (timeout == 0 || !_freewheel_thread_active) {
766 DEBUG_AUDIO("Failed to start freewheel thread\n");
773 PortAudioBackend::stop_freewheel_process_thread ()
777 if (!_freewheel_thread_active) {
781 DEBUG_AUDIO("Signaling freewheel thread to stop\n");
783 pthread_mutex_lock (&_freewheel_mutex);
784 pthread_cond_signal (&_freewheel_signal);
785 pthread_mutex_unlock (&_freewheel_mutex);
787 if (pthread_join (_pthread_freewheel, &status) != 0) {
788 DEBUG_AUDIO("Failed to stop freewheel thread\n");
796 PortAudioBackend::freewheel_process_thread()
798 _freewheel_thread_active = true;
800 bool first_run = false;
802 pthread_mutex_lock (&_freewheel_mutex);
805 // check if we should run,
806 if (_freewheeling != _freewheel) {
807 if (!_freewheeling) {
808 DEBUG_AUDIO("Leaving freewheel\n");
809 _freewheel = false; // first mark as disabled
810 _reinit_thread_callback = true; // hand over _main_thread
811 _freewheel_ack = false; // prepare next handshake
812 _midiio->set_enabled(true);
819 if (!_freewheel || !_freewheel_ack) {
820 // wait for a change, we use a timed wait to
821 // terminate early in case some error sets _run = 0
824 gettimeofday (&tv, NULL);
825 ts.tv_sec = tv.tv_sec + 3;
827 DEBUG_AUDIO("Waiting for freewheel change\n");
828 pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts);
833 // tell the engine we're ready to GO.
834 engine.freewheel_callback (_freewheeling);
836 _main_thread = pthread_self();
837 AudioEngine::thread_init_callback (this);
838 _midiio->set_enabled(false);
841 if (!blocking_process_freewheel()) {
845 process_port_connection_changes();
848 pthread_mutex_unlock (&_freewheel_mutex);
850 _freewheel_thread_active = false;
853 // engine.process_callback() returner error
854 engine.halted_callback("CoreAudio Freehweeling aborted.");
860 PortAudioBackend::freewheel (bool onoff)
862 if (onoff == _freewheeling) {
865 _freewheeling = onoff;
867 if (0 == pthread_mutex_trylock (&_freewheel_mutex)) {
868 pthread_cond_signal (&_freewheel_signal);
869 pthread_mutex_unlock (&_freewheel_mutex);
875 PortAudioBackend::dsp_load () const
877 return 100.f * _dsp_load;
881 PortAudioBackend::raw_buffer_size (DataType t)
884 case DataType::AUDIO:
885 return _samples_per_period * sizeof(Sample);
887 return _max_buffer_size; // XXX not really limited
894 PortAudioBackend::sample_time ()
896 return _processed_samples;
900 PortAudioBackend::sample_time_at_cycle_start ()
902 return _processed_samples;
906 PortAudioBackend::samples_since_cycle_start ()
908 if (!_active || !_run || _freewheeling || _freewheel) {
911 if (!_cycle_timer.valid()) {
915 return _cycle_timer.samples_since_cycle_start (PBD::get_microseconds());
919 PortAudioBackend::name_to_id(std::string device_name) const {
920 uint32_t device_id = UINT32_MAX;
921 std::map<int, std::string> devices;
922 _pcmio->input_device_list(devices);
923 _pcmio->output_device_list(devices);
925 for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
926 if (i->second == device_name) {
927 device_id = i->first;
935 PortAudioBackend::set_mmcss_pro_audio (HANDLE* task_handle)
937 bool mmcss_success = PBD::MMCSS::set_thread_characteristics ("Pro Audio", task_handle);
939 if (!mmcss_success) {
940 PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
943 DEBUG_THREADS("Thread characteristics set to Pro Audio\n");
946 bool mmcss_priority =
947 PBD::MMCSS::set_thread_priority(*task_handle, PBD::MMCSS::AVRT_PRIORITY_NORMAL);
949 if (!mmcss_priority) {
950 PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
953 DEBUG_THREADS("Thread priority set to AVRT_PRIORITY_NORMAL\n");
960 PortAudioBackend::reset_mmcss (HANDLE task_handle)
962 if (!PBD::MMCSS::revert_thread_characteristics(task_handle)) {
963 DEBUG_THREADS("Unable to reset process thread characteristics\n");
970 PortAudioBackend::portaudio_process_thread (void *arg)
972 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
973 boost::function<void ()> f = td->f;
976 #ifdef USE_MMCSS_THREAD_PRIORITIES
978 bool mmcss_success = set_mmcss_pro_audio (&task_handle);
981 DWORD tid = GetCurrentThreadId ();
982 DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
986 #ifdef USE_MMCSS_THREAD_PRIORITIES
988 reset_mmcss (task_handle);
996 PortAudioBackend::create_process_thread (boost::function<void()> func)
1000 size_t stacksize = 100000;
1002 ThreadData* td = new ThreadData (this, func, stacksize);
1004 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
1005 &thread_id, portaudio_process_thread, td)) {
1006 pthread_attr_init (&attr);
1007 pthread_attr_setstacksize (&attr, stacksize);
1008 if (pthread_create (&thread_id, &attr, portaudio_process_thread, td)) {
1009 DEBUG_AUDIO("Cannot create process thread.");
1010 pthread_attr_destroy (&attr);
1013 pthread_attr_destroy (&attr);
1016 _threads.push_back (thread_id);
1021 PortAudioBackend::join_process_threads ()
1025 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
1028 if (pthread_join (*i, &status)) {
1029 DEBUG_AUDIO("Cannot terminate process thread.");
1038 PortAudioBackend::in_process_thread ()
1040 #ifdef USE_BLOCKING_API
1041 if (pthread_equal (_main_blocking_thread, pthread_self()) != 0) {
1045 if (pthread_equal (_main_thread, pthread_self()) != 0) {
1050 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
1052 if (pthread_equal (*i, pthread_self ()) != 0) {
1060 PortAudioBackend::process_thread_count ()
1062 return _threads.size ();
1066 PortAudioBackend::update_latencies ()
1068 // trigger latency callback in RT thread (locked graph)
1069 port_connect_add_remove_callback();
1072 /* PORTENGINE API */
1075 PortAudioBackend::private_handle () const
1081 PortAudioBackend::my_name () const
1083 return _instance_name;
1087 PortAudioBackend::available () const
1089 return _run && _active;
1093 PortAudioBackend::port_name_size () const
1099 PortAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
1101 if (!valid_port (port)) {
1102 DEBUG_PORTS("set_port_name: Invalid Port(s)\n");
1105 return static_cast<PamPort*>(port)->set_name (_instance_name + ":" + name);
1109 PortAudioBackend::get_port_name (PortEngine::PortHandle port) const
1111 if (!valid_port (port)) {
1112 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
1113 return std::string ();
1115 return static_cast<PamPort*>(port)->name ();
1119 PortAudioBackend::get_port_property (PortHandle port,
1120 const std::string& key,
1122 std::string& type) const
1124 if (!valid_port (port)) {
1125 DEBUG_PORTS("get_port_name: Invalid Port(s)\n");
1129 if (key == "http://jackaudio.org/metadata/pretty-name") {
1131 value = static_cast<PamPort*>(port)->pretty_name ();
1132 if (!value.empty()) {
1139 PortEngine::PortHandle
1140 PortAudioBackend::get_port_by_name (const std::string& name) const
1142 PortHandle port = (PortHandle) find_port (name);
1147 PortAudioBackend::get_ports (
1148 const std::string& port_name_pattern,
1149 DataType type, PortFlags flags,
1150 std::vector<std::string>& port_names) const
1154 bool use_regexp = false;
1155 if (port_name_pattern.size () > 0) {
1156 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
1160 for (size_t i = 0; i < _ports.size (); ++i) {
1161 PamPort* port = _ports[i];
1162 if ((port->type () == type) && flags == (port->flags () & flags)) {
1163 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
1164 port_names.push_back (port->name ());
1170 regfree (&port_regex);
1176 PortAudioBackend::port_data_type (PortEngine::PortHandle port) const
1178 if (!valid_port (port)) {
1179 return DataType::NIL;
1181 return static_cast<PamPort*>(port)->type ();
1184 PortEngine::PortHandle
1185 PortAudioBackend::register_port (
1186 const std::string& name,
1187 ARDOUR::DataType type,
1188 ARDOUR::PortFlags flags)
1190 if (name.size () == 0) { return 0; }
1191 if (flags & IsPhysical) { return 0; }
1192 return add_port (_instance_name + ":" + name, type, flags);
1195 PortEngine::PortHandle
1196 PortAudioBackend::add_port (
1197 const std::string& name,
1198 ARDOUR::DataType type,
1199 ARDOUR::PortFlags flags)
1201 assert(name.size ());
1202 if (find_port (name)) {
1204 string_compose("register_port: Port already exists: (%1)\n", name));
1207 PamPort* port = NULL;
1209 case DataType::AUDIO:
1210 port = new PortAudioPort(*this, name, flags);
1212 case DataType::MIDI:
1213 port = new PortMidiPort(*this, name, flags);
1216 DEBUG_PORTS("register_port: Invalid Data Type.\n");
1220 _ports.push_back (port);
1226 PortAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
1231 PamPort* port = static_cast<PamPort*>(port_handle);
1232 std::vector<PamPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<PamPort*>(port_handle));
1233 if (i == _ports.end ()) {
1234 DEBUG_PORTS("unregister_port: Failed to find port\n");
1237 disconnect_all(port_handle);
1243 PortAudioBackend::register_system_audio_ports()
1247 const uint32_t a_ins = _n_inputs;
1248 const uint32_t a_out = _n_outputs;
1250 uint32_t capture_latency = 0;
1251 uint32_t playback_latency = 0;
1253 // guard against erroneous latency values
1254 if (_pcmio->capture_latency() > _samples_per_period) {
1255 capture_latency = _pcmio->capture_latency() - _samples_per_period;
1257 if (_pcmio->playback_latency() > _samples_per_period) {
1258 playback_latency = _pcmio->playback_latency() - _samples_per_period;
1262 lr.min = lr.max = capture_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
1263 for (uint32_t i = 0; i < a_ins; ++i) {
1265 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
1266 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1268 set_latency_range (p, false, lr);
1269 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
1270 audio_port->set_pretty_name (
1271 _pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
1272 _system_inputs.push_back (audio_port);
1275 lr.min = lr.max = playback_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
1276 for (uint32_t i = 0; i < a_out; ++i) {
1278 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
1279 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1281 set_latency_range (p, true, lr);
1282 PortAudioPort* audio_port = static_cast<PortAudioPort*>(p);
1283 audio_port->set_pretty_name (
1284 _pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
1285 _system_outputs.push_back(audio_port);
1291 PortAudioBackend::register_system_midi_ports()
1293 if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
1294 DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
1299 lr.min = lr.max = _samples_per_period;
1301 const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
1303 for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
1306 std::string port_name = "system:midi_capture_" + (*i)->name();
1308 add_port (port_name,
1310 static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1312 set_latency_range (p, false, lr);
1313 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1314 midi_port->set_pretty_name ((*i)->name());
1315 _system_midi_in.push_back (midi_port);
1316 DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
1319 const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
1321 for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
1322 i != outputs.end ();
1324 std::string port_name = "system:midi_playback_" + (*i)->name();
1326 add_port (port_name,
1328 static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1330 set_latency_range (p, false, lr);
1331 PortMidiPort* midi_port = static_cast<PortMidiPort*>(p);
1332 midi_port->set_n_periods(2);
1333 midi_port->set_pretty_name ((*i)->name());
1334 _system_midi_out.push_back (midi_port);
1335 DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
1341 PortAudioBackend::unregister_ports (bool system_only)
1344 _system_inputs.clear();
1345 _system_outputs.clear();
1346 _system_midi_in.clear();
1347 _system_midi_out.clear();
1348 while (i < _ports.size ()) {
1349 PamPort* port = _ports[i];
1350 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1351 port->disconnect_all ();
1353 _ports.erase (_ports.begin() + i);
1361 PortAudioBackend::connect (const std::string& src, const std::string& dst)
1363 PamPort* src_port = find_port (src);
1364 PamPort* dst_port = find_port (dst);
1367 DEBUG_PORTS(string_compose("connect: Invalid Source port: (%1)\n", src));
1371 DEBUG_PORTS(string_compose("connect: Invalid Destination port: (%1)\n", dst));
1374 return src_port->connect (dst_port);
1378 PortAudioBackend::disconnect (const std::string& src, const std::string& dst)
1380 PamPort* src_port = find_port (src);
1381 PamPort* dst_port = find_port (dst);
1383 if (!src_port || !dst_port) {
1384 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1387 return src_port->disconnect (dst_port);
1391 PortAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1393 PamPort* dst_port = find_port (dst);
1394 if (!valid_port (src)) {
1395 DEBUG_PORTS("connect: Invalid Source Port Handle\n");
1399 DEBUG_PORTS(string_compose("connect: Invalid Destination Port (%1)\n", dst));
1402 return static_cast<PamPort*>(src)->connect (dst_port);
1406 PortAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1408 PamPort* dst_port = find_port (dst);
1409 if (!valid_port (src) || !dst_port) {
1410 DEBUG_PORTS("disconnect: Invalid Port(s)\n");
1413 return static_cast<PamPort*>(src)->disconnect (dst_port);
1417 PortAudioBackend::disconnect_all (PortEngine::PortHandle port)
1419 if (!valid_port (port)) {
1420 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1423 static_cast<PamPort*>(port)->disconnect_all ();
1428 PortAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1430 if (!valid_port (port)) {
1431 DEBUG_PORTS("disconnect_all: Invalid Port\n");
1434 return static_cast<PamPort*>(port)->is_connected ();
1438 PortAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1440 PamPort* dst_port = find_port (dst);
1441 if (!valid_port (src) || !dst_port) {
1442 DEBUG_PORTS("connected_to: Invalid Port\n");
1445 return static_cast<PamPort*>(src)->is_connected (dst_port);
1449 PortAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1451 if (!valid_port (port)) {
1452 DEBUG_PORTS("physically_connected: Invalid Port\n");
1455 return static_cast<PamPort*>(port)->is_physically_connected ();
1459 PortAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1461 if (!valid_port (port)) {
1462 DEBUG_PORTS("get_connections: Invalid Port\n");
1466 assert (0 == names.size ());
1468 const std::vector<PamPort*>& connected_ports = static_cast<PamPort*>(port)->get_connections ();
1470 for (std::vector<PamPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1471 names.push_back ((*i)->name ());
1474 return (int)names.size ();
1479 PortAudioBackend::midi_event_get (
1480 pframes_t& timestamp,
1481 size_t& size, uint8_t** buf, void* port_buffer,
1482 uint32_t event_index)
1484 if (!buf || !port_buffer) return -1;
1485 PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
1486 if (event_index >= source.size ()) {
1489 PortMidiEvent * const event = source[event_index].get ();
1491 timestamp = event->timestamp ();
1492 size = event->size ();
1493 *buf = event->data ();
1498 PortAudioBackend::midi_event_put (
1500 pframes_t timestamp,
1501 const uint8_t* buffer, size_t size)
1503 if (!buffer || !port_buffer) return -1;
1504 PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
1505 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1506 // nevermind, ::get_buffer() sorts events
1507 DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
1508 (pframes_t)dst.back ()->timestamp (),
1511 dst.push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (timestamp, buffer, size)));
1516 PortAudioBackend::get_midi_event_count (void* port_buffer)
1518 if (!port_buffer) return 0;
1519 return static_cast<PortMidiBuffer*>(port_buffer)->size ();
1523 PortAudioBackend::midi_clear (void* port_buffer)
1525 if (!port_buffer) return;
1526 PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
1534 PortAudioBackend::can_monitor_input () const
1540 PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1546 PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1552 PortAudioBackend::monitoring_input (PortEngine::PortHandle)
1557 /* Latency management */
1560 PortAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1562 if (!valid_port (port)) {
1563 DEBUG_PORTS("PamPort::set_latency_range (): invalid port.\n");
1565 static_cast<PamPort*>(port)->set_latency_range (latency_range, for_playback);
1569 PortAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1572 if (!valid_port (port)) {
1573 DEBUG_PORTS("PamPort::get_latency_range (): invalid port.\n");
1578 PamPort* p = static_cast<PamPort*>(port);
1581 r = p->latency_range (for_playback);
1583 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1584 if (p->is_input() && for_playback) {
1585 r.min += _samples_per_period;
1586 r.max += _samples_per_period;
1588 if (p->is_output() && !for_playback) {
1589 r.min += _samples_per_period;
1590 r.max += _samples_per_period;
1596 /* Discovering physical ports */
1599 PortAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1601 if (!valid_port (port)) {
1602 DEBUG_PORTS("PamPort::port_is_physical (): invalid port.\n");
1605 return static_cast<PamPort*>(port)->is_physical ();
1609 PortAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1611 for (size_t i = 0; i < _ports.size (); ++i) {
1612 PamPort* port = _ports[i];
1613 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1614 port_names.push_back (port->name ());
1620 PortAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1622 for (size_t i = 0; i < _ports.size (); ++i) {
1623 PamPort* port = _ports[i];
1624 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1625 port_names.push_back (port->name ());
1631 PortAudioBackend::n_physical_outputs () const
1635 for (size_t i = 0; i < _ports.size (); ++i) {
1636 PamPort* port = _ports[i];
1637 if (port->is_output () && port->is_physical ()) {
1638 switch (port->type ()) {
1639 case DataType::AUDIO:
1642 case DataType::MIDI:
1651 cc.set (DataType::AUDIO, n_audio);
1652 cc.set (DataType::MIDI, n_midi);
1657 PortAudioBackend::n_physical_inputs () const
1661 for (size_t i = 0; i < _ports.size (); ++i) {
1662 PamPort* port = _ports[i];
1663 if (port->is_input () && port->is_physical ()) {
1664 switch (port->type ()) {
1665 case DataType::AUDIO:
1668 case DataType::MIDI:
1677 cc.set (DataType::AUDIO, n_audio);
1678 cc.set (DataType::MIDI, n_midi);
1682 /* Getting access to the data buffer for a port */
1685 PortAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1687 if (!port || !valid_port (port)) return NULL;
1688 return static_cast<PamPort*>(port)->get_buffer (nframes);
1693 PortAudioBackend::blocking_process_thread ()
1695 AudioEngine::thread_init_callback (this);
1697 _processed_samples = 0;
1699 manager.registration_callback();
1700 manager.graph_order_callback();
1702 if (_pcmio->start_stream() != paNoError) {
1703 _pcmio->close_stream ();
1705 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1708 #ifdef USE_MMCSS_THREAD_PRIORITIES
1710 bool mmcss_success = set_mmcss_pro_audio (&task_handle);
1713 DWORD tid = GetCurrentThreadId ();
1714 DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
1718 if (_freewheeling != _freewheel) {
1719 _freewheel = _freewheeling;
1720 engine.freewheel_callback (_freewheel);
1725 switch (_pcmio->next_cycle (_samples_per_period)) {
1729 DEBUG_AUDIO("PortAudio: Xrun\n");
1733 PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
1737 if (!blocking_process_main(_pcmio->get_capture_buffer(),
1738 _pcmio->get_playback_buffer())) {
1743 if (!blocking_process_freewheel()) {
1748 process_port_connection_changes();
1750 _pcmio->close_stream();
1753 engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
1756 #ifdef USE_MMCSS_THREAD_PRIORITIES
1757 if (mmcss_success) {
1758 reset_mmcss(task_handle);
1766 PortAudioBackend::blocking_process_main(const float* interleaved_input_data,
1767 float* interleaved_output_data)
1770 int64_t min_elapsed_us = 1000000;
1771 int64_t max_elapsed_us = 0;
1773 _dsp_calc.set_start_timestamp_us (PBD::get_microseconds());
1776 /* Copy input audio data into input port buffers */
1777 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1778 it != _system_inputs.end();
1780 assert(_system_inputs.size() == _pcmio->n_capture_channels());
1781 uint32_t channels = _system_inputs.size();
1782 float* input_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
1783 deinterleave_audio_data(
1784 interleaved_input_data, input_port_buffer, _samples_per_period, i, channels);
1787 process_incoming_midi ();
1789 /* clear output buffers */
1790 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1791 it != _system_outputs.end();
1793 memset((*it)->get_buffer(_samples_per_period),
1795 _samples_per_period * sizeof(Sample));
1798 _last_cycle_start = _cycle_timer.get_start();
1799 _cycle_timer.reset_start(PBD::get_microseconds());
1802 uint64_t cycle_diff_us = (_cycle_timer.get_start() - _last_cycle_start);
1803 int64_t deviation_us = (cycle_diff_us - _cycle_timer.get_length_us());
1804 _total_deviation_us += ::llabs(deviation_us);
1806 std::max(_max_deviation_us, (uint64_t)::llabs(deviation_us));
1808 if ((_cycle_count % 1000) == 0) {
1809 uint64_t mean_deviation_us = _total_deviation_us / _cycle_count;
1810 DEBUG_TIMING(string_compose("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
1811 mean_deviation_us * 1e-3,
1812 _max_deviation_us * 1e-3));
1815 if (::llabs(deviation_us) > _cycle_timer.get_length_us()) {
1817 string_compose("time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
1818 cycle_diff_us * 1e-3,
1819 _cycle_timer.get_length_us() * 1e-3,
1820 deviation_us * 1e-3));
1823 /* call engine process callback */
1824 if (engine.process_callback(_samples_per_period)) {
1825 _pcmio->close_stream();
1830 process_outgoing_midi ();
1832 /* write back audio */
1834 for (std::vector<PamPort*>::const_iterator it = _system_outputs.begin();
1835 it != _system_outputs.end();
1837 assert(_system_outputs.size() == _pcmio->n_playback_channels());
1838 const uint32_t channels = _system_outputs.size();
1839 float* output_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
1840 interleave_audio_data(
1841 output_port_buffer, interleaved_output_data, _samples_per_period, i, channels);
1844 _processed_samples += _samples_per_period;
1846 /* calculate DSP load */
1847 _dsp_calc.set_stop_timestamp_us (PBD::get_microseconds());
1848 _dsp_load = _dsp_calc.get_dsp_load();
1850 DEBUG_TIMING(string_compose("DSP Load: %1\n", _dsp_load));
1852 max_elapsed_us = std::max(_dsp_calc.elapsed_time_us(), max_elapsed_us);
1853 min_elapsed_us = std::min(_dsp_calc.elapsed_time_us(), min_elapsed_us);
1854 if ((_cycle_count % 1000) == 0) {
1855 DEBUG_TIMING(string_compose("Elapsed process time(usecs) max: %1, min: %2\n",
1864 PortAudioBackend::blocking_process_freewheel()
1866 // zero audio input buffers
1867 for (std::vector<PamPort*>::const_iterator it = _system_inputs.begin();
1868 it != _system_inputs.end();
1870 memset((*it)->get_buffer(_samples_per_period),
1872 _samples_per_period * sizeof(Sample));
1875 // TODO clear midi or stop midi recv when entering fwheelin'
1877 if (engine.process_callback(_samples_per_period)) {
1878 _pcmio->close_stream();
1883 // drop all outgoing MIDI messages
1884 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1885 it != _system_midi_out.end();
1887 void* bptr = (*it)->get_buffer(0);
1892 Glib::usleep(100); // don't hog cpu
1897 PortAudioBackend::process_incoming_midi ()
1900 for (std::vector<PamPort*>::const_iterator it = _system_midi_in.begin();
1901 it != _system_midi_in.end();
1903 PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
1906 pframes_t sample_offset;
1908 size_t size = sizeof(data);
1909 while (_midiio->dequeue_input_event(i,
1910 _cycle_timer.get_start(),
1911 _cycle_timer.get_next_start(),
1915 sample_offset = _cycle_timer.samples_since_cycle_start(timestamp);
1916 midi_event_put(mbuf, sample_offset, data, size);
1917 DEBUG_MIDI(string_compose("Dequeuing incoming MIDI data for device: %1 "
1918 "sample_offset: %2 timestamp: %3, size: %4\n",
1919 _midiio->get_inputs()[i]->name(),
1923 size = sizeof(data);
1929 PortAudioBackend::process_outgoing_midi ()
1932 for (std::vector<PamPort*>::iterator it = _system_midi_out.begin();
1933 it != _system_midi_out.end();
1935 static_cast<PortMidiPort*>(*it)->next_period();
1937 /* queue outgoing midi */
1939 for (std::vector<PamPort*>::const_iterator it = _system_midi_out.begin();
1940 it != _system_midi_out.end();
1942 const PortMidiBuffer* src =
1943 static_cast<const PortMidiPort*>(*it)->const_buffer();
1945 for (PortMidiBuffer::const_iterator mit = src->begin(); mit != src->end();
1947 uint64_t timestamp =
1948 _cycle_timer.timestamp_from_sample_offset((*mit)->timestamp());
1949 DEBUG_MIDI(string_compose("Queuing outgoing MIDI data for device: "
1950 "%1 sample_offset: %2 timestamp: %3, size: %4\n",
1951 _midiio->get_outputs()[i]->name(),
1952 (*mit)->timestamp(),
1955 _midiio->enqueue_output_event(i, timestamp, (*mit)->data(), (*mit)->size());
1961 PortAudioBackend::process_port_connection_changes ()
1963 bool connections_changed = false;
1964 bool ports_changed = false;
1965 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1966 if (_port_change_flag) {
1967 ports_changed = true;
1968 _port_change_flag = false;
1970 if (!_port_connection_queue.empty ()) {
1971 connections_changed = true;
1973 while (!_port_connection_queue.empty ()) {
1974 PortConnectData *c = _port_connection_queue.back ();
1975 manager.connect_callback (c->a, c->b, c->c);
1976 _port_connection_queue.pop_back ();
1979 pthread_mutex_unlock (&_port_callback_mutex);
1981 if (ports_changed) {
1982 manager.registration_callback();
1984 if (connections_changed) {
1985 manager.graph_order_callback();
1987 if (connections_changed || ports_changed) {
1988 engine.latency_callback(false);
1989 engine.latency_callback(true);
1993 /******************************************************************************/
1995 static boost::shared_ptr<PortAudioBackend> _instance;
1997 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1998 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1999 static int deinstantiate ();
2000 static bool already_configured ();
2001 static bool available ();
2003 static ARDOUR::AudioBackendInfo _descriptor = {
2012 static boost::shared_ptr<AudioBackend>
2013 backend_factory (AudioEngine& e)
2016 _instance.reset (new PortAudioBackend (e, _descriptor));
2022 instantiate (const std::string& arg1, const std::string& /* arg2 */)
2024 s_instance_name = arg1;
2036 already_configured ()
2047 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
2049 return &_descriptor;
2053 /******************************************************************************/
2054 PamPort::PamPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
2059 _capture_latency_range.min = 0;
2060 _capture_latency_range.max = 0;
2061 _playback_latency_range.min = 0;
2062 _playback_latency_range.max = 0;
2065 PamPort::~PamPort () {
2070 int PamPort::connect (PamPort *port)
2073 DEBUG_PORTS("PamPort::connect (): invalid (null) port\n");
2077 if (type () != port->type ()) {
2078 DEBUG_PORTS("PamPort::connect (): wrong port-type\n");
2082 if (is_output () && port->is_output ()) {
2083 DEBUG_PORTS("PamPort::connect (): cannot inter-connect output ports.\n");
2087 if (is_input () && port->is_input ()) {
2088 DEBUG_PORTS("PamPort::connect (): cannot inter-connect input ports.\n");
2093 DEBUG_PORTS("PamPort::connect (): cannot self-connect ports.\n");
2097 if (is_connected (port)) {
2098 #if 0 // don't bother to warn about this for now. just ignore it
2099 PBD::error << _("PamPort::connect (): ports are already connected:")
2100 << " (" << name () << ") -> (" << port->name () << ")"
2106 _connect (port, true);
2111 void PamPort::_connect (PamPort *port, bool callback)
2113 _connections.push_back (port);
2115 port->_connect (this, false);
2116 _osx_backend.port_connect_callback (name(), port->name(), true);
2120 int PamPort::disconnect (PamPort *port)
2123 DEBUG_PORTS("PamPort::disconnect (): invalid (null) port\n");
2127 if (!is_connected (port)) {
2128 DEBUG_PORTS(string_compose(
2129 "PamPort::disconnect (): ports are not connected: (%1) -> (%2)\n",
2134 _disconnect (port, true);
2138 void PamPort::_disconnect (PamPort *port, bool callback)
2140 std::vector<PamPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
2142 assert (it != _connections.end ());
2144 _connections.erase (it);
2147 port->_disconnect (this, false);
2148 _osx_backend.port_connect_callback (name(), port->name(), false);
2153 void PamPort::disconnect_all ()
2155 while (!_connections.empty ()) {
2156 _connections.back ()->_disconnect (this, false);
2157 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
2158 _connections.pop_back ();
2163 PamPort::is_connected (const PamPort *port) const
2165 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
2168 bool PamPort::is_physically_connected () const
2170 for (std::vector<PamPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
2171 if ((*it)->is_physical ()) {
2178 /******************************************************************************/
2180 PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
2181 : PamPort (b, name, flags)
2183 memset (_buffer, 0, sizeof (_buffer));
2184 #ifndef PLATFORM_WINDOWS
2185 mlock(_buffer, sizeof (_buffer));
2189 PortAudioPort::~PortAudioPort () { }
2191 void* PortAudioPort::get_buffer (pframes_t n_samples)
2194 std::vector<PamPort*>::const_iterator it = get_connections ().begin ();
2195 if (it == get_connections ().end ()) {
2196 memset (_buffer, 0, n_samples * sizeof (Sample));
2198 PortAudioPort const * source = static_cast<const PortAudioPort*>(*it);
2199 assert (source && source->is_output ());
2200 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
2201 while (++it != get_connections ().end ()) {
2202 source = static_cast<const PortAudioPort*>(*it);
2203 assert (source && source->is_output ());
2204 Sample* dst = buffer ();
2205 const Sample* src = source->const_buffer ();
2206 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
2216 PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
2217 : PamPort (b, name, flags)
2221 _buffer[0].clear ();
2222 _buffer[1].clear ();
2225 PortMidiPort::~PortMidiPort () { }
2227 struct MidiEventSorter {
2228 bool operator() (const boost::shared_ptr<PortMidiEvent>& a, const boost::shared_ptr<PortMidiEvent>& b) {
2233 void* PortMidiPort::get_buffer (pframes_t /* nframes */)
2236 (_buffer[_bufperiod]).clear ();
2237 for (std::vector<PamPort*>::const_iterator i = get_connections ().begin ();
2238 i != get_connections ().end ();
2240 const PortMidiBuffer * src = static_cast<const PortMidiPort*>(*i)->const_buffer ();
2241 for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
2242 (_buffer[_bufperiod]).push_back (boost::shared_ptr<PortMidiEvent>(new PortMidiEvent (**it)));
2245 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
2247 return &(_buffer[_bufperiod]);
2250 PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
2252 , _timestamp (timestamp)
2256 _data = (uint8_t*) malloc (size);
2257 memcpy (_data, data, size);
2261 PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
2262 : _size (other.size ())
2263 , _timestamp (other.timestamp ())
2266 if (other.size () && other.const_data ()) {
2267 _data = (uint8_t*) malloc (other.size ());
2268 memcpy (_data, other.const_data (), other.size ());
2272 PortMidiEvent::~PortMidiEvent () {