2 * Copyright (C) 2014 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.
26 #include "coreaudio_backend.h"
27 #include "rt_thread.h"
29 #include "pbd/compose.h"
30 #include "pbd/error.h"
31 #include "pbd/file_utils.h"
32 #include "ardour/filesystem_paths.h"
33 #include "ardour/port_manager.h"
36 using namespace ARDOUR;
38 static std::string s_instance_name;
39 size_t CoreAudioBackend::_max_buffer_size = 8192;
40 std::vector<std::string> CoreAudioBackend::_midi_options;
41 std::vector<AudioBackend::DeviceStatus> CoreAudioBackend::_duplex_audio_device_status;
42 std::vector<AudioBackend::DeviceStatus> CoreAudioBackend::_input_audio_device_status;
43 std::vector<AudioBackend::DeviceStatus> CoreAudioBackend::_output_audio_device_status;
46 /* static class instance access */
47 static void hw_changed_callback_ptr (void *arg)
49 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
50 d->hw_changed_callback();
53 static void error_callback_ptr (void *arg)
55 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
59 static void xrun_callback_ptr (void *arg)
61 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
65 static void buffer_size_callback_ptr (void *arg)
67 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
68 d->buffer_size_callback();
71 static void sample_rate_callback_ptr (void *arg)
73 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
74 d->sample_rate_callback();
77 static void midi_port_change (void *arg)
79 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
80 d->coremidi_rediscover ();
84 CoreAudioBackend::CoreAudioBackend (AudioEngine& e, AudioBackendInfo& info)
85 : AudioBackend (e, info)
89 , _freewheeling (false)
91 , _freewheel_ack (false)
92 , _reinit_thread_callback (false)
93 , _measure_latency (false)
94 , _last_process_start (0)
95 , _input_audio_device("")
96 , _output_audio_device("")
97 , _midi_driver_option(_("None"))
99 , _samples_per_period (1024)
102 , _systemic_audio_input_latency (0)
103 , _systemic_audio_output_latency (0)
105 , _processed_samples (0)
106 , _port_change_flag (false)
108 _instance_name = s_instance_name;
109 pthread_mutex_init (&_port_callback_mutex, 0);
110 pthread_mutex_init (&_process_callback_mutex, 0);
111 pthread_mutex_init (&_freewheel_mutex, 0);
112 pthread_cond_init (&_freewheel_signal, 0);
114 _pcmio = new CoreAudioPCM ();
115 _midiio = new CoreMidiIo ();
117 _pcmio->set_hw_changed_callback (hw_changed_callback_ptr, this);
121 CoreAudioBackend::~CoreAudioBackend ()
123 delete _pcmio; _pcmio = 0;
124 delete _midiio; _midiio = 0;
125 pthread_mutex_destroy (&_port_callback_mutex);
126 pthread_mutex_destroy (&_process_callback_mutex);
127 pthread_mutex_destroy (&_freewheel_mutex);
128 pthread_cond_destroy (&_freewheel_signal);
131 /* AUDIOBACKEND API */
134 CoreAudioBackend::name () const
136 return X_("CoreAudio");
140 CoreAudioBackend::is_realtime () const
145 std::vector<AudioBackend::DeviceStatus>
146 CoreAudioBackend::enumerate_devices () const
148 _duplex_audio_device_status.clear();
149 std::map<size_t, std::string> devices;
150 _pcmio->duplex_device_list(devices);
152 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
153 if (_input_audio_device == "") _input_audio_device = i->second;
154 if (_output_audio_device == "") _output_audio_device = i->second;
155 _duplex_audio_device_status.push_back (DeviceStatus (i->second, true));
157 return _duplex_audio_device_status;
160 std::vector<AudioBackend::DeviceStatus>
161 CoreAudioBackend::enumerate_input_devices () const
163 _input_audio_device_status.clear();
164 std::map<size_t, std::string> devices;
165 _pcmio->input_device_list(devices);
167 _input_audio_device_status.push_back (DeviceStatus (_("None"), true));
168 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != 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;
176 std::vector<AudioBackend::DeviceStatus>
177 CoreAudioBackend::enumerate_output_devices () const
179 _output_audio_device_status.clear();
180 std::map<size_t, std::string> devices;
181 _pcmio->output_device_list(devices);
183 _output_audio_device_status.push_back (DeviceStatus (_("None"), true));
184 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
185 if (_output_audio_device == "") _output_audio_device = i->second;
186 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
188 return _output_audio_device_status;
192 CoreAudioBackend::available_sample_rates (const std::string&) const
194 std::vector<float> sr;
195 std::vector<float> sr_in;
196 std::vector<float> sr_out;
198 const uint32_t inp = name_to_id(_input_audio_device);
199 const uint32_t out = name_to_id(_output_audio_device);
200 if (inp == UINT32_MAX && out == UINT32_MAX) {
202 } else if (inp == UINT32_MAX) {
203 _pcmio->available_sample_rates(out, sr_out);
205 } else if (out == UINT32_MAX) {
206 _pcmio->available_sample_rates(inp, sr_in);
209 _pcmio->available_sample_rates(inp, sr_in);
210 _pcmio->available_sample_rates(out, sr_out);
211 // TODO allow to use different SR per device, tweak aggregate
212 std::set_intersection(sr_in.begin(), sr_in.end(), sr_out.begin(), sr_out.end(), std::back_inserter(sr));
217 std::vector<uint32_t>
218 CoreAudioBackend::available_buffer_sizes (const std::string& device) const
220 std::vector<uint32_t> bs;
221 _pcmio->available_buffer_sizes(name_to_id(device), bs);
226 CoreAudioBackend::available_input_channel_count (const std::string&) const
228 return 128; // TODO query current device
232 CoreAudioBackend::available_output_channel_count (const std::string&) const
234 return 128; // TODO query current device
238 CoreAudioBackend::can_change_sample_rate_when_running () const
244 CoreAudioBackend::can_change_buffer_size_when_running () const
250 CoreAudioBackend::set_device_name (const std::string& d)
253 rv |= set_input_device_name (d);
254 rv |= set_output_device_name (d);
259 CoreAudioBackend::set_input_device_name (const std::string& d)
261 _input_audio_device = d;
262 const float sr = _pcmio->current_sample_rate(name_to_id(_input_audio_device));
263 if (sr > 0) { set_sample_rate(sr); }
268 CoreAudioBackend::set_output_device_name (const std::string& d)
270 _output_audio_device = d;
272 const float sr = _pcmio->current_sample_rate(name_to_id(_output_audio_device));
273 if (sr > 0) { set_sample_rate(sr); }
278 CoreAudioBackend::set_sample_rate (float sr)
280 std::vector<float> srs = available_sample_rates (/* really ignored */_input_audio_device);
281 if (std::find(srs.begin(), srs.end(), sr) == srs.end()) {
285 engine.sample_rate_change (sr);
290 CoreAudioBackend::set_buffer_size (uint32_t bs)
292 if (bs <= 0 || bs >= _max_buffer_size) {
295 _samples_per_period = bs;
296 _pcmio->set_samples_per_period(bs);
297 engine.buffer_size_change (bs);
302 CoreAudioBackend::set_interleaved (bool yn)
304 if (!yn) { return 0; }
309 CoreAudioBackend::set_input_channels (uint32_t cc)
316 CoreAudioBackend::set_output_channels (uint32_t cc)
323 CoreAudioBackend::set_systemic_input_latency (uint32_t sl)
325 _systemic_audio_input_latency = sl;
330 CoreAudioBackend::set_systemic_output_latency (uint32_t sl)
332 _systemic_audio_output_latency = sl;
336 /* Retrieving parameters */
338 CoreAudioBackend::device_name () const
344 CoreAudioBackend::input_device_name () const
346 return _input_audio_device;
350 CoreAudioBackend::output_device_name () const
352 return _output_audio_device;
356 CoreAudioBackend::sample_rate () const
362 CoreAudioBackend::buffer_size () const
364 return _samples_per_period;
368 CoreAudioBackend::interleaved () const
374 CoreAudioBackend::input_channels () const
380 CoreAudioBackend::output_channels () const
386 CoreAudioBackend::systemic_input_latency () const
388 return _systemic_audio_input_latency;
392 CoreAudioBackend::systemic_output_latency () const
394 return _systemic_audio_output_latency;
399 std::vector<std::string>
400 CoreAudioBackend::enumerate_midi_options () const
402 if (_midi_options.empty()) {
403 _midi_options.push_back (_("CoreMidi"));
404 _midi_options.push_back (_("None"));
406 return _midi_options;
410 CoreAudioBackend::set_midi_option (const std::string& opt)
412 if (opt != _("None") && opt != _("CoreMidi")) {
415 _midi_driver_option = opt;
420 CoreAudioBackend::midi_option () const
422 return _midi_driver_option;
426 CoreAudioBackend::launch_control_app ()
428 _pcmio->launch_control_app(name_to_id(_input_audio_device));
433 static void * pthread_freewheel (void *arg)
435 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
436 d->freewheel_thread ();
441 static int process_callback_ptr (void *arg, const uint32_t n_samples, const uint64_t host_time)
443 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
444 return d->process_callback(n_samples, host_time);
448 CoreAudioBackend::_start (bool for_latency_measurement)
450 if ((!_active_ca || !_active_fw) && _run) {
451 // recover from 'halted', reap threads
455 if (_active_ca || _active_fw || _run) {
456 PBD::error << _("CoreAudioBackend: already active.") << endmsg;
461 PBD::warning << _("CoreAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
462 _system_inputs.clear();
463 _system_outputs.clear();
464 _system_midi_in.clear();
465 _system_midi_out.clear();
469 uint32_t device1 = name_to_id(_input_audio_device);
470 uint32_t device2 = name_to_id(_output_audio_device);
472 assert(_active_ca == false);
473 assert(_active_fw == false);
475 _freewheel_ack = false;
476 _reinit_thread_callback = true;
477 _last_process_start = 0;
479 _pcmio->set_error_callback (error_callback_ptr, this);
480 _pcmio->set_buffer_size_callback (buffer_size_callback_ptr, this);
481 _pcmio->set_sample_rate_callback (sample_rate_callback_ptr, this);
483 _pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this);
484 printf("STATE: %d\n", _pcmio->state ());
486 switch (_pcmio->state ()) {
487 case 0: /* OK */ break;
488 case -1: PBD::error << _("CoreAudioBackend: failed to open device.") << endmsg; break;
489 default: PBD::error << _("CoreAudioBackend: initialization failed.") << endmsg; break;
491 if (_pcmio->state ()) {
495 if (_n_outputs != _pcmio->n_playback_channels ()) {
496 if (_n_outputs == 0) {
497 _n_outputs = _pcmio->n_playback_channels ();
499 _n_outputs = std::min (_n_outputs, _pcmio->n_playback_channels ());
501 PBD::info << _("CoreAudioBackend: adjusted output channel count to match device.") << endmsg;
504 if (_n_inputs != _pcmio->n_capture_channels ()) {
505 if (_n_inputs == 0) {
506 _n_inputs = _pcmio->n_capture_channels ();
508 _n_inputs = std::min (_n_inputs, _pcmio->n_capture_channels ());
510 PBD::info << _("CoreAudioBackend: adjusted input channel count to match device.") << endmsg;
513 if (_pcmio->samples_per_period() != _samples_per_period) {
514 _samples_per_period = _pcmio->samples_per_period();
515 PBD::warning << _("CoreAudioBackend: samples per period does not match.") << endmsg;
518 if (_pcmio->sample_rate() != _samplerate) {
519 _samplerate = _pcmio->sample_rate();
520 engine.sample_rate_change (_samplerate);
521 PBD::warning << _("CoreAudioBackend: sample rate does not match.") << endmsg;
524 _measure_latency = for_latency_measurement;
528 _port_change_flag = false;
530 if (_midi_driver_option == _("CoreMidi")) {
531 _midiio->set_enabled(true);
532 _midiio->set_port_changed_callback(midi_port_change, this);
533 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
536 if (register_system_audio_ports()) {
537 PBD::error << _("CoreAudioBackend: failed to register system ports.") << endmsg;
542 engine.sample_rate_change (_samplerate);
543 engine.buffer_size_change (_samples_per_period);
545 if (engine.reestablish_ports ()) {
546 PBD::error << _("CoreAudioBackend: Could not re-establish ports.") << endmsg;
551 if (pthread_create (&_freeewheel_thread, NULL, pthread_freewheel, this))
553 PBD::error << _("CoreAudioBackend: failed to create process thread.") << endmsg;
554 delete _pcmio; _pcmio = 0;
560 while ((!_active_ca || !_active_fw) && --timeout > 0) { Glib::usleep (1000); }
563 PBD::error << _("CoreAudioBackend: failed to start.") << endmsg;
567 PBD::error << _("CoreAudioBackend: failed to start freewheeling thread.") << endmsg;
577 PBD::error << _("CoreAudioBackend: failed to start coreaudio.") << endmsg;
583 engine.reconnect_ports ();
585 // force an initial registration_callback() & latency re-compute
586 _port_change_flag = true;
590 _pcmio->set_xrun_callback (xrun_callback_ptr, this);
597 CoreAudioBackend::stop ()
606 _midiio->set_port_changed_callback(NULL, NULL);
609 pthread_mutex_lock (&_freewheel_mutex);
610 pthread_cond_signal (&_freewheel_signal);
611 pthread_mutex_unlock (&_freewheel_mutex);
613 if (pthread_join (_freeewheel_thread, &status)) {
614 PBD::error << _("CoreAudioBackend: failed to terminate.") << endmsg;
621 _active_fw = false; // ??
627 CoreAudioBackend::freewheel (bool onoff)
629 if (onoff == _freewheeling) {
632 _freewheeling = onoff;
633 // wake up freewheeling thread
634 if (0 == pthread_mutex_trylock (&_freewheel_mutex)) {
635 pthread_cond_signal (&_freewheel_signal);
636 pthread_mutex_unlock (&_freewheel_mutex);
642 CoreAudioBackend::dsp_load () const
644 return std::min(100.f, 100.f * _dsp_load);
648 CoreAudioBackend::raw_buffer_size (DataType t)
651 case DataType::AUDIO:
652 return _samples_per_period * sizeof(Sample);
654 return _max_buffer_size; // XXX not really limited
661 CoreAudioBackend::sample_time ()
663 return _processed_samples;
667 CoreAudioBackend::sample_time_at_cycle_start ()
669 return _processed_samples;
673 CoreAudioBackend::samples_since_cycle_start ()
675 if (!_active_ca || !_run || _freewheeling || _freewheel) {
678 if (_last_process_start == 0) {
682 const uint64_t now = AudioGetCurrentHostTime ();
683 const int64_t elapsed_time_ns = AudioConvertHostTimeToNanos(now - _last_process_start);
684 return std::max((pframes_t)0, (pframes_t)rint(1e-9 * elapsed_time_ns * _samplerate));
688 CoreAudioBackend::name_to_id(std::string device_name) const {
689 uint32_t device_id = UINT32_MAX;
690 std::map<size_t, std::string> devices;
691 _pcmio->device_list(devices);
693 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
694 if (i->second == device_name) {
695 device_id = i->first;
703 CoreAudioBackend::coreaudio_process_thread (void *arg)
705 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
706 boost::function<void ()> f = td->f;
713 CoreAudioBackend::create_process_thread (boost::function<void()> func)
717 size_t stacksize = 100000;
719 ThreadData* td = new ThreadData (this, func, stacksize);
721 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
722 &thread_id, coreaudio_process_thread, td)) {
723 pthread_attr_init (&attr);
724 pthread_attr_setstacksize (&attr, stacksize);
725 if (pthread_create (&thread_id, &attr, coreaudio_process_thread, td)) {
726 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
727 pthread_attr_destroy (&attr);
730 pthread_attr_destroy (&attr);
733 _threads.push_back (thread_id);
738 CoreAudioBackend::join_process_threads ()
742 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
745 if (pthread_join (*i, &status)) {
746 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
755 CoreAudioBackend::in_process_thread ()
757 if (pthread_equal (_main_thread, pthread_self()) != 0) {
761 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
763 if (pthread_equal (*i, pthread_self ()) != 0) {
771 CoreAudioBackend::process_thread_count ()
773 return _threads.size ();
777 CoreAudioBackend::update_latencies ()
779 // trigger latency callback in RT thread (locked graph)
780 port_connect_add_remove_callback();
786 CoreAudioBackend::private_handle () const
792 CoreAudioBackend::my_name () const
794 return _instance_name;
798 CoreAudioBackend::available () const
800 return _run && _active_fw && _active_ca;
804 CoreAudioBackend::port_name_size () const
810 CoreAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
812 if (!valid_port (port)) {
813 PBD::error << _("CoreAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
816 return static_cast<CoreBackendPort*>(port)->set_name (_instance_name + ":" + name);
820 CoreAudioBackend::get_port_name (PortEngine::PortHandle port) const
822 if (!valid_port (port)) {
823 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
824 return std::string ();
826 return static_cast<CoreBackendPort*>(port)->name ();
830 CoreAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const
832 if (!valid_port (port)) {
833 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
836 if (key == "http://jackaudio.org/metadata/pretty-name") {
838 value = static_cast<CoreBackendPort*>(port)->pretty_name ();
839 if (!value.empty()) {
846 PortEngine::PortHandle
847 CoreAudioBackend::get_port_by_name (const std::string& name) const
849 PortHandle port = (PortHandle) find_port (name);
854 CoreAudioBackend::get_ports (
855 const std::string& port_name_pattern,
856 DataType type, PortFlags flags,
857 std::vector<std::string>& port_names) const
861 bool use_regexp = false;
862 if (port_name_pattern.size () > 0) {
863 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
867 for (size_t i = 0; i < _ports.size (); ++i) {
868 CoreBackendPort* port = _ports[i];
869 if ((port->type () == type) && flags == (port->flags () & flags)) {
870 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
871 port_names.push_back (port->name ());
877 regfree (&port_regex);
883 CoreAudioBackend::port_data_type (PortEngine::PortHandle port) const
885 if (!valid_port (port)) {
886 return DataType::NIL;
888 return static_cast<CoreBackendPort*>(port)->type ();
891 PortEngine::PortHandle
892 CoreAudioBackend::register_port (
893 const std::string& name,
894 ARDOUR::DataType type,
895 ARDOUR::PortFlags flags)
897 if (name.size () == 0) { return 0; }
898 if (flags & IsPhysical) { return 0; }
899 return add_port (_instance_name + ":" + name, type, flags);
902 PortEngine::PortHandle
903 CoreAudioBackend::add_port (
904 const std::string& name,
905 ARDOUR::DataType type,
906 ARDOUR::PortFlags flags)
908 assert(name.size ());
909 if (find_port (name)) {
910 PBD::error << _("CoreAudioBackend::register_port: Port already exists:")
911 << " (" << name << ")" << endmsg;
914 CoreBackendPort* port = NULL;
916 case DataType::AUDIO:
917 port = new CoreAudioPort (*this, name, flags);
920 port = new CoreMidiPort (*this, name, flags);
923 PBD::error << _("CoreAudioBackend::register_port: Invalid Data Type.") << endmsg;
927 _ports.push_back (port);
933 CoreAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
938 CoreBackendPort* port = static_cast<CoreBackendPort*>(port_handle);
939 std::vector<CoreBackendPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<CoreBackendPort*>(port_handle));
940 if (i == _ports.end ()) {
941 PBD::error << _("CoreAudioBackend::unregister_port: Failed to find port") << endmsg;
944 disconnect_all(port_handle);
950 CoreAudioBackend::register_system_audio_ports()
954 const uint32_t a_ins = _n_inputs;
955 const uint32_t a_out = _n_outputs;
957 const uint32_t coreaudio_reported_input_latency = _pcmio->get_latency(name_to_id(_input_audio_device), true);
958 const uint32_t coreaudio_reported_output_latency = _pcmio->get_latency(name_to_id(_output_audio_device), false);
961 printf("COREAUDIO LATENCY: i:%d, o:%d\n",
962 coreaudio_reported_input_latency,
963 coreaudio_reported_output_latency);
967 lr.min = lr.max = coreaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
968 for (uint32_t i = 0; i < a_ins; ++i) {
970 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
971 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
973 set_latency_range (p, false, lr);
974 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
975 cp->set_pretty_name (_pcmio->cached_port_name(i, true));
976 _system_inputs.push_back(cp);
979 lr.min = lr.max = coreaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
980 for (uint32_t i = 0; i < a_out; ++i) {
982 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
983 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
985 set_latency_range (p, true, lr);
986 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
987 cp->set_pretty_name (_pcmio->cached_port_name(i, false));
988 _system_outputs.push_back(cp);
994 CoreAudioBackend::coremidi_rediscover()
996 if (!_run) { return; }
997 assert(_midi_driver_option == _("CoreMidi"));
999 pthread_mutex_lock (&_process_callback_mutex);
1001 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) {
1003 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
1004 if ((*it)->name() == _midiio->port_id(i, false)) {
1013 printf("unregister MIDI Output: %s\n", (*it)->name().c_str());
1015 _port_change_flag = true;
1016 unregister_port((*it));
1017 it = _system_midi_out.erase(it);
1021 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) {
1023 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
1024 if ((*it)->name() == _midiio->port_id(i, true)) {
1033 printf("unregister MIDI Input: %s\n", (*it)->name().c_str());
1035 _port_change_flag = true;
1036 unregister_port((*it));
1037 it = _system_midi_in.erase(it);
1041 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
1042 std::string name = _midiio->port_id(i, true);
1043 if (find_port_in(_system_midi_in, name)) {
1048 printf("register MIDI Input: %s\n", name.c_str());
1050 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1052 fprintf(stderr, "failed to register MIDI IN: %s\n", name.c_str());
1056 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1057 set_latency_range (p, false, lr);
1058 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
1059 pp->set_pretty_name(_midiio->port_name(i, true));
1060 _system_midi_in.push_back(pp);
1061 _port_change_flag = true;
1064 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
1065 std::string name = _midiio->port_id(i, false);
1066 if (find_port_in(_system_midi_out, name)) {
1071 printf("register MIDI OUT: %s\n", name.c_str());
1073 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1075 fprintf(stderr, "failed to register MIDI OUT: %s\n", name.c_str());
1079 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1080 set_latency_range (p, false, lr);
1081 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
1082 pp->set_pretty_name(_midiio->port_name(i, false));
1083 _system_midi_out.push_back(pp);
1084 _port_change_flag = true;
1088 assert(_system_midi_out.size() == _midiio->n_midi_outputs());
1089 assert(_system_midi_in.size() == _midiio->n_midi_inputs());
1091 pthread_mutex_unlock (&_process_callback_mutex);
1095 CoreAudioBackend::unregister_ports (bool system_only)
1098 _system_inputs.clear();
1099 _system_outputs.clear();
1100 _system_midi_in.clear();
1101 _system_midi_out.clear();
1102 while (i < _ports.size ()) {
1103 CoreBackendPort* port = _ports[i];
1104 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1105 port->disconnect_all ();
1107 _ports.erase (_ports.begin() + i);
1115 CoreAudioBackend::connect (const std::string& src, const std::string& dst)
1117 CoreBackendPort* src_port = find_port (src);
1118 CoreBackendPort* dst_port = find_port (dst);
1121 PBD::error << _("CoreAudioBackend::connect: Invalid Source port:")
1122 << " (" << src <<")" << endmsg;
1126 PBD::error << _("CoreAudioBackend::connect: Invalid Destination port:")
1127 << " (" << dst <<")" << endmsg;
1130 return src_port->connect (dst_port);
1134 CoreAudioBackend::disconnect (const std::string& src, const std::string& dst)
1136 CoreBackendPort* src_port = find_port (src);
1137 CoreBackendPort* dst_port = find_port (dst);
1139 if (!src_port || !dst_port) {
1140 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1143 return src_port->disconnect (dst_port);
1147 CoreAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1149 CoreBackendPort* dst_port = find_port (dst);
1150 if (!valid_port (src)) {
1151 PBD::error << _("CoreAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1155 PBD::error << _("CoreAudioBackend::connect: Invalid Destination Port")
1156 << " (" << dst << ")" << endmsg;
1159 return static_cast<CoreBackendPort*>(src)->connect (dst_port);
1163 CoreAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1165 CoreBackendPort* dst_port = find_port (dst);
1166 if (!valid_port (src) || !dst_port) {
1167 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1170 return static_cast<CoreBackendPort*>(src)->disconnect (dst_port);
1174 CoreAudioBackend::disconnect_all (PortEngine::PortHandle port)
1176 if (!valid_port (port)) {
1177 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1180 static_cast<CoreBackendPort*>(port)->disconnect_all ();
1185 CoreAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1187 if (!valid_port (port)) {
1188 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1191 return static_cast<CoreBackendPort*>(port)->is_connected ();
1195 CoreAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1197 CoreBackendPort* dst_port = find_port (dst);
1198 if (!valid_port (src) || !dst_port) {
1199 PBD::error << _("CoreAudioBackend::connected_to: Invalid Port") << endmsg;
1202 return static_cast<CoreBackendPort*>(src)->is_connected (dst_port);
1206 CoreAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1208 if (!valid_port (port)) {
1209 PBD::error << _("CoreAudioBackend::physically_connected: Invalid Port") << endmsg;
1212 return static_cast<CoreBackendPort*>(port)->is_physically_connected ();
1216 CoreAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1218 if (!valid_port (port)) {
1219 PBD::error << _("CoreAudioBackend::get_connections: Invalid Port") << endmsg;
1223 assert (0 == names.size ());
1225 const std::vector<CoreBackendPort*>& connected_ports = static_cast<CoreBackendPort*>(port)->get_connections ();
1227 for (std::vector<CoreBackendPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1228 names.push_back ((*i)->name ());
1231 return (int)names.size ();
1236 CoreAudioBackend::midi_event_get (
1237 pframes_t& timestamp,
1238 size_t& size, uint8_t** buf, void* port_buffer,
1239 uint32_t event_index)
1241 if (!buf || !port_buffer) return -1;
1242 CoreMidiBuffer& source = * static_cast<CoreMidiBuffer*>(port_buffer);
1243 if (event_index >= source.size ()) {
1246 CoreMidiEvent * const event = source[event_index].get ();
1248 timestamp = event->timestamp ();
1249 size = event->size ();
1250 *buf = event->data ();
1255 CoreAudioBackend::midi_event_put (
1257 pframes_t timestamp,
1258 const uint8_t* buffer, size_t size)
1260 if (!buffer || !port_buffer) return -1;
1261 CoreMidiBuffer& dst = * static_cast<CoreMidiBuffer*>(port_buffer);
1262 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1264 // nevermind, ::get_buffer() sorts events
1265 fprintf (stderr, "CoreMidiBuffer: unordered event: %d > %d\n",
1266 (pframes_t)dst.back ()->timestamp (), timestamp);
1269 dst.push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (timestamp, buffer, size)));
1274 CoreAudioBackend::get_midi_event_count (void* port_buffer)
1276 if (!port_buffer) return 0;
1277 return static_cast<CoreMidiBuffer*>(port_buffer)->size ();
1281 CoreAudioBackend::midi_clear (void* port_buffer)
1283 if (!port_buffer) return;
1284 CoreMidiBuffer * buf = static_cast<CoreMidiBuffer*>(port_buffer);
1292 CoreAudioBackend::can_monitor_input () const
1298 CoreAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1304 CoreAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1310 CoreAudioBackend::monitoring_input (PortEngine::PortHandle)
1315 /* Latency management */
1318 CoreAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1320 if (!valid_port (port)) {
1321 PBD::error << _("CoreBackendPort::set_latency_range (): invalid port.") << endmsg;
1323 static_cast<CoreBackendPort*>(port)->set_latency_range (latency_range, for_playback);
1327 CoreAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1330 if (!valid_port (port)) {
1331 PBD::error << _("CoreBackendPort::get_latency_range (): invalid port.") << endmsg;
1336 CoreBackendPort* p = static_cast<CoreBackendPort*>(port);
1339 r = p->latency_range (for_playback);
1340 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1341 if (p->is_input() && for_playback) {
1342 r.min += _samples_per_period;
1343 r.max += _samples_per_period;
1345 if (p->is_output() && !for_playback) {
1346 r.min += _samples_per_period;
1347 r.max += _samples_per_period;
1353 /* Discovering physical ports */
1356 CoreAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1358 if (!valid_port (port)) {
1359 PBD::error << _("CoreBackendPort::port_is_physical (): invalid port.") << endmsg;
1362 return static_cast<CoreBackendPort*>(port)->is_physical ();
1366 CoreAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1368 for (size_t i = 0; i < _ports.size (); ++i) {
1369 CoreBackendPort* port = _ports[i];
1370 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1371 port_names.push_back (port->name ());
1377 CoreAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1379 for (size_t i = 0; i < _ports.size (); ++i) {
1380 CoreBackendPort* port = _ports[i];
1381 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1382 port_names.push_back (port->name ());
1388 CoreAudioBackend::n_physical_outputs () const
1392 for (size_t i = 0; i < _ports.size (); ++i) {
1393 CoreBackendPort* port = _ports[i];
1394 if (port->is_output () && port->is_physical ()) {
1395 switch (port->type ()) {
1396 case DataType::AUDIO: ++n_audio; break;
1397 case DataType::MIDI: ++n_midi; break;
1403 cc.set (DataType::AUDIO, n_audio);
1404 cc.set (DataType::MIDI, n_midi);
1409 CoreAudioBackend::n_physical_inputs () const
1413 for (size_t i = 0; i < _ports.size (); ++i) {
1414 CoreBackendPort* port = _ports[i];
1415 if (port->is_input () && port->is_physical ()) {
1416 switch (port->type ()) {
1417 case DataType::AUDIO: ++n_audio; break;
1418 case DataType::MIDI: ++n_midi; break;
1424 cc.set (DataType::AUDIO, n_audio);
1425 cc.set (DataType::MIDI, n_midi);
1429 /* Getting access to the data buffer for a port */
1432 CoreAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1434 if (!port || !valid_port (port)) return NULL;
1435 return static_cast<CoreBackendPort*>(port)->get_buffer (nframes);
1439 CoreAudioBackend::pre_process ()
1441 bool connections_changed = false;
1442 bool ports_changed = false;
1443 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1444 if (_port_change_flag) {
1445 ports_changed = true;
1446 _port_change_flag = false;
1448 if (!_port_connection_queue.empty ()) {
1449 connections_changed = true;
1451 while (!_port_connection_queue.empty ()) {
1452 PortConnectData *c = _port_connection_queue.back ();
1453 manager.connect_callback (c->a, c->b, c->c);
1454 _port_connection_queue.pop_back ();
1457 pthread_mutex_unlock (&_port_callback_mutex);
1459 if (ports_changed) {
1460 manager.registration_callback();
1462 if (connections_changed) {
1463 manager.graph_order_callback();
1465 if (connections_changed || ports_changed) {
1466 engine.latency_callback(false);
1467 engine.latency_callback(true);
1472 CoreAudioBackend::freewheel_thread ()
1475 bool first_run = false;
1476 /* Freewheeling - use for export. The first call to
1477 * engine.process_callback() after engine.freewheel_callback will
1478 * if the first export cycle.
1479 * For reliable precise export timing, the calls need to be in sync.
1481 * Furthermore we need to make sure the registered process thread
1484 * _freewheeling = GUI thread state as set by ::freewheel()
1485 * _freewheel = in sync here (export thread)
1487 pthread_mutex_lock (&_freewheel_mutex);
1489 // check if we should run,
1490 if (_freewheeling != _freewheel) {
1491 if (!_freewheeling) {
1492 // prepare leaving freewheeling mode
1493 _freewheel = false; // first mark as disabled
1494 _reinit_thread_callback = true; // hand over _main_thread
1495 _freewheel_ack = false; // prepare next handshake
1496 _midiio->set_enabled(true);
1503 if (!_freewheel || !_freewheel_ack) {
1504 // wait for a change, we use a timed wait to
1505 // terminate early in case some error sets _run = 0
1508 gettimeofday (&tv, NULL);
1509 ts.tv_sec = tv.tv_sec + 3;
1511 pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts);
1516 // tell the engine we're ready to GO.
1517 engine.freewheel_callback (_freewheeling);
1519 _main_thread = pthread_self();
1520 AudioEngine::thread_init_callback (this);
1521 _midiio->set_enabled(false);
1524 // process port updates first in every cycle.
1527 // prevent coreaudio device changes
1528 pthread_mutex_lock (&_process_callback_mutex);
1532 // clear input buffers
1533 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1534 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1536 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
1537 static_cast<CoreMidiBuffer*>((*it)->get_buffer(0))->clear ();
1540 _last_process_start = 0;
1541 if (engine.process_callback (_samples_per_period)) {
1542 pthread_mutex_unlock (&_process_callback_mutex);
1546 pthread_mutex_unlock (&_process_callback_mutex);
1548 Glib::usleep (100); // don't hog cpu
1551 pthread_mutex_unlock (&_freewheel_mutex);
1556 // engine.process_callback() returner error
1557 engine.halted_callback("CoreAudio Freehweeling aborted.");
1563 CoreAudioBackend::process_callback (const uint32_t n_samples, const uint64_t host_time)
1566 uint64_t clock1, clock2;
1570 if (_run && _freewheel && !_freewheel_ack) {
1571 // acknowledge freewheeling; hand-over thread ID
1572 pthread_mutex_lock (&_freewheel_mutex);
1573 if (_freewheel) _freewheel_ack = true;
1574 pthread_cond_signal (&_freewheel_signal);
1575 pthread_mutex_unlock (&_freewheel_mutex);
1578 if (!_run || _freewheel || _preinit) {
1579 // NB if we return 1, the output is
1580 // zeroed by the coreaudio callback
1584 if (_reinit_thread_callback || _main_thread != pthread_self()) {
1585 _reinit_thread_callback = false;
1586 _main_thread = pthread_self();
1587 AudioEngine::thread_init_callback (this);
1590 if (pthread_mutex_trylock (&_process_callback_mutex)) {
1591 // block while devices are added/removed
1593 printf("Xrun due to device change\n");
1598 /* port-connection change */
1601 // cycle-length in usec
1602 const double nominal_time = 1e6 * n_samples / _samplerate;
1604 clock1 = g_get_monotonic_time();
1608 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1609 CoreMidiBuffer* mbuf = static_cast<CoreMidiBuffer*>((*it)->get_buffer(0));
1612 uint8_t data[128]; // matches CoreMidi's MIDIPacket
1613 size_t size = sizeof(data);
1614 while (_midiio->recv_event (i, nominal_time, time_ns, data, size)) {
1615 pframes_t time = floor((float) time_ns * _samplerate * 1e-9);
1616 assert (time < n_samples);
1617 midi_event_put((void*)mbuf, time, data, size);
1618 size = sizeof(data);
1624 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1625 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(n_samples)), n_samples);
1628 /* clear output buffers */
1629 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1630 memset ((*it)->get_buffer (n_samples), 0, n_samples * sizeof (Sample));
1633 _midiio->start_cycle();
1634 _last_process_start = host_time;
1636 if (engine.process_callback (n_samples)) {
1637 fprintf(stderr, "ENGINE PROCESS ERROR\n");
1638 //_pcmio->pcm_stop ();
1640 pthread_mutex_unlock (&_process_callback_mutex);
1645 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1646 static_cast<CoreMidiPort*>(*it)->get_buffer(0);
1649 /* queue outgoing midi */
1651 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1652 #if 0 // something's still b0rked with CoreMidiIo::send_events()
1653 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1654 _midiio->send_events (i, nominal_time, (void*)src);
1656 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1657 for (CoreMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1658 _midiio->send_event (i, (*mit)->timestamp() / nominal_time, (*mit)->data(), (*mit)->size());
1663 /* write back audio */
1665 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1666 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (n_samples), n_samples);
1669 _processed_samples += n_samples;
1671 /* calc DSP load. */
1672 clock2 = g_get_monotonic_time();
1673 const int64_t elapsed_time = clock2 - clock1;
1675 const float load = elapsed_time / (float) nominal_time;
1676 if (load > _dsp_load) {
1679 const float a = .2 * _samples_per_period / _samplerate;
1680 _dsp_load = _dsp_load + a * (load - _dsp_load) + 1e-12;
1683 pthread_mutex_unlock (&_process_callback_mutex);
1688 CoreAudioBackend::error_callback ()
1690 _pcmio->set_error_callback (NULL, NULL);
1691 _pcmio->set_sample_rate_callback (NULL, NULL);
1692 _pcmio->set_xrun_callback (NULL, NULL);
1693 _midiio->set_port_changed_callback(NULL, NULL);
1694 engine.halted_callback("CoreAudio Process aborted.");
1699 CoreAudioBackend::xrun_callback ()
1705 CoreAudioBackend::buffer_size_callback ()
1707 uint32_t bs = _pcmio->samples_per_period();
1708 if (bs == _samples_per_period) {
1711 _samples_per_period = bs;
1712 engine.buffer_size_change (_samples_per_period);
1716 CoreAudioBackend::sample_rate_callback ()
1718 _pcmio->set_error_callback (NULL, NULL);
1719 _pcmio->set_sample_rate_callback (NULL, NULL);
1720 _pcmio->set_xrun_callback (NULL, NULL);
1721 _midiio->set_port_changed_callback(NULL, NULL);
1722 engine.halted_callback("Sample Rate Changed.");
1727 CoreAudioBackend::hw_changed_callback ()
1729 _reinit_thread_callback = true;
1730 engine.request_device_list_update();
1733 /******************************************************************************/
1735 static boost::shared_ptr<CoreAudioBackend> _instance;
1737 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1738 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1739 static int deinstantiate ();
1740 static bool already_configured ();
1741 static bool available ();
1743 static ARDOUR::AudioBackendInfo _descriptor = {
1752 static boost::shared_ptr<AudioBackend>
1753 backend_factory (AudioEngine& e)
1756 _instance.reset (new CoreAudioBackend (e, _descriptor));
1762 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1764 s_instance_name = arg1;
1776 already_configured ()
1787 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1789 return &_descriptor;
1793 /******************************************************************************/
1794 CoreBackendPort::CoreBackendPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1799 _capture_latency_range.min = 0;
1800 _capture_latency_range.max = 0;
1801 _playback_latency_range.min = 0;
1802 _playback_latency_range.max = 0;
1805 CoreBackendPort::~CoreBackendPort () {
1810 int CoreBackendPort::connect (CoreBackendPort *port)
1813 PBD::error << _("CoreBackendPort::connect (): invalid (null) port") << endmsg;
1817 if (type () != port->type ()) {
1818 PBD::error << _("CoreBackendPort::connect (): wrong port-type") << endmsg;
1822 if (is_output () && port->is_output ()) {
1823 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect output ports.") << endmsg;
1827 if (is_input () && port->is_input ()) {
1828 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect input ports.") << endmsg;
1833 PBD::error << _("CoreBackendPort::connect (): cannot self-connect ports.") << endmsg;
1837 if (is_connected (port)) {
1838 #if 0 // don't bother to warn about this for now. just ignore it
1839 PBD::error << _("CoreBackendPort::connect (): ports are already connected:")
1840 << " (" << name () << ") -> (" << port->name () << ")"
1846 _connect (port, true);
1851 void CoreBackendPort::_connect (CoreBackendPort *port, bool callback)
1853 _connections.push_back (port);
1855 port->_connect (this, false);
1856 _osx_backend.port_connect_callback (name(), port->name(), true);
1860 int CoreBackendPort::disconnect (CoreBackendPort *port)
1863 PBD::error << _("CoreBackendPort::disconnect (): invalid (null) port") << endmsg;
1867 if (!is_connected (port)) {
1868 PBD::error << _("CoreBackendPort::disconnect (): ports are not connected:")
1869 << " (" << name () << ") -> (" << port->name () << ")"
1873 _disconnect (port, true);
1877 void CoreBackendPort::_disconnect (CoreBackendPort *port, bool callback)
1879 std::vector<CoreBackendPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1881 assert (it != _connections.end ());
1883 _connections.erase (it);
1886 port->_disconnect (this, false);
1887 _osx_backend.port_connect_callback (name(), port->name(), false);
1892 void CoreBackendPort::disconnect_all ()
1894 while (!_connections.empty ()) {
1895 _connections.back ()->_disconnect (this, false);
1896 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1897 _connections.pop_back ();
1902 CoreBackendPort::is_connected (const CoreBackendPort *port) const
1904 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1907 bool CoreBackendPort::is_physically_connected () const
1909 for (std::vector<CoreBackendPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1910 if ((*it)->is_physical ()) {
1917 /******************************************************************************/
1919 CoreAudioPort::CoreAudioPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1920 : CoreBackendPort (b, name, flags)
1922 memset (_buffer, 0, sizeof (_buffer));
1923 mlock(_buffer, sizeof (_buffer));
1926 CoreAudioPort::~CoreAudioPort () { }
1928 void* CoreAudioPort::get_buffer (pframes_t n_samples)
1931 std::vector<CoreBackendPort*>::const_iterator it = get_connections ().begin ();
1932 if (it == get_connections ().end ()) {
1933 memset (_buffer, 0, n_samples * sizeof (Sample));
1935 CoreAudioPort const * source = static_cast<const CoreAudioPort*>(*it);
1936 assert (source && source->is_output ());
1937 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1938 while (++it != get_connections ().end ()) {
1939 source = static_cast<const CoreAudioPort*>(*it);
1940 assert (source && source->is_output ());
1941 Sample* dst = buffer ();
1942 const Sample* src = source->const_buffer ();
1943 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1953 CoreMidiPort::CoreMidiPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1954 : CoreBackendPort (b, name, flags)
1958 _buffer[0].clear ();
1959 _buffer[1].clear ();
1962 CoreMidiPort::~CoreMidiPort () { }
1964 struct MidiEventSorter {
1965 bool operator() (const boost::shared_ptr<CoreMidiEvent>& a, const boost::shared_ptr<CoreMidiEvent>& b) {
1970 void* CoreMidiPort::get_buffer (pframes_t /* nframes */)
1973 (_buffer[_bufperiod]).clear ();
1974 for (std::vector<CoreBackendPort*>::const_iterator i = get_connections ().begin ();
1975 i != get_connections ().end ();
1977 const CoreMidiBuffer * src = static_cast<const CoreMidiPort*>(*i)->const_buffer ();
1978 for (CoreMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1979 (_buffer[_bufperiod]).push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (**it)));
1982 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1984 return &(_buffer[_bufperiod]);
1987 CoreMidiEvent::CoreMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1989 , _timestamp (timestamp)
1993 _data = (uint8_t*) malloc (size);
1994 memcpy (_data, data, size);
1998 CoreMidiEvent::CoreMidiEvent (const CoreMidiEvent& other)
1999 : _size (other.size ())
2000 , _timestamp (other.timestamp ())
2003 if (other.size () && other.const_data ()) {
2004 _data = (uint8_t*) malloc (other.size ());
2005 memcpy (_data, other.const_data (), other.size ());
2009 CoreMidiEvent::~CoreMidiEvent () {