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::_audio_device_status;
42 std::vector<AudioBackend::DeviceStatus> CoreAudioBackend::_midi_device_status;
45 /* static class instance access */
46 static void hw_changed_callback_ptr (void *arg)
48 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
49 d->hw_changed_callback();
52 static void error_callback_ptr (void *arg)
54 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
58 static void xrun_callback_ptr (void *arg)
60 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
64 static void buffer_size_callback_ptr (void *arg)
66 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
67 d->buffer_size_callback();
70 static void sample_rate_callback_ptr (void *arg)
72 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
73 d->sample_rate_callback();
76 static void midi_port_change (void *arg)
78 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
79 d->coremidi_rediscover ();
83 CoreAudioBackend::CoreAudioBackend (AudioEngine& e, AudioBackendInfo& info)
84 : AudioBackend (e, info)
88 , _freewheeling (false)
90 , _freewheel_ack (false)
91 , _reinit_thread_callback (false)
92 , _measure_latency (false)
93 , _last_process_start (0)
95 , _midi_driver_option(_("None"))
97 , _samples_per_period (1024)
100 , _systemic_audio_input_latency (0)
101 , _systemic_audio_output_latency (0)
103 , _processed_samples (0)
104 , _port_change_flag (false)
106 _instance_name = s_instance_name;
107 pthread_mutex_init (&_port_callback_mutex, 0);
108 pthread_mutex_init (&_process_callback_mutex, 0);
109 pthread_mutex_init (&_freewheel_mutex, 0);
110 pthread_cond_init (&_freewheel_signal, 0);
112 _pcmio = new CoreAudioPCM ();
113 _midiio = new CoreMidiIo ();
115 _pcmio->set_hw_changed_callback (hw_changed_callback_ptr, this);
119 CoreAudioBackend::~CoreAudioBackend ()
121 delete _pcmio; _pcmio = 0;
122 delete _midiio; _midiio = 0;
123 pthread_mutex_destroy (&_port_callback_mutex);
124 pthread_mutex_destroy (&_process_callback_mutex);
125 pthread_mutex_destroy (&_freewheel_mutex);
126 pthread_cond_destroy (&_freewheel_signal);
129 /* AUDIOBACKEND API */
132 CoreAudioBackend::name () const
134 return X_("CoreAudio");
138 CoreAudioBackend::is_realtime () const
143 std::vector<AudioBackend::DeviceStatus>
144 CoreAudioBackend::enumerate_devices () const
146 _audio_device_status.clear();
147 std::map<size_t, std::string> devices;
148 _pcmio->device_list(devices);
150 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
151 if (_audio_device == "") _audio_device = i->second;
152 _audio_device_status.push_back (DeviceStatus (i->second, true));
154 return _audio_device_status;
158 CoreAudioBackend::available_sample_rates (const std::string&) const
160 std::vector<float> sr;
161 _pcmio->available_sample_rates(name_to_id(_audio_device), sr);
165 std::vector<uint32_t>
166 CoreAudioBackend::available_buffer_sizes (const std::string&) const
168 std::vector<uint32_t> bs;
169 _pcmio->available_buffer_sizes(name_to_id(_audio_device), bs);
174 CoreAudioBackend::available_input_channel_count (const std::string&) const
176 return 128; // TODO query current device
180 CoreAudioBackend::available_output_channel_count (const std::string&) const
182 return 128; // TODO query current device
186 CoreAudioBackend::can_change_sample_rate_when_running () const
192 CoreAudioBackend::can_change_buffer_size_when_running () const
198 CoreAudioBackend::set_device_name (const std::string& d)
201 const float sr = _pcmio->current_sample_rate(name_to_id(_audio_device));
202 if (sr > 0) { set_sample_rate(sr); }
207 CoreAudioBackend::set_sample_rate (float sr)
209 if (sr <= 0) { return -1; }
210 // TODO check if it's in the list of valid SR
212 engine.sample_rate_change (sr);
217 CoreAudioBackend::set_buffer_size (uint32_t bs)
219 if (bs <= 0 || bs >= _max_buffer_size) {
222 _samples_per_period = bs;
223 _pcmio->set_samples_per_period(bs);
224 engine.buffer_size_change (bs);
229 CoreAudioBackend::set_interleaved (bool yn)
231 if (!yn) { return 0; }
236 CoreAudioBackend::set_input_channels (uint32_t cc)
243 CoreAudioBackend::set_output_channels (uint32_t cc)
250 CoreAudioBackend::set_systemic_input_latency (uint32_t sl)
252 _systemic_audio_input_latency = sl;
257 CoreAudioBackend::set_systemic_output_latency (uint32_t sl)
259 _systemic_audio_output_latency = sl;
264 CoreAudioBackend::set_systemic_midi_input_latency (std::string const device, uint32_t sl)
266 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
268 nfo->systemic_input_latency = sl;
273 CoreAudioBackend::set_systemic_midi_output_latency (std::string const device, uint32_t sl)
275 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
277 nfo->systemic_output_latency = sl;
281 /* Retrieving parameters */
283 CoreAudioBackend::device_name () const
285 return _audio_device;
289 CoreAudioBackend::sample_rate () const
295 CoreAudioBackend::buffer_size () const
297 return _samples_per_period;
301 CoreAudioBackend::interleaved () const
307 CoreAudioBackend::input_channels () const
313 CoreAudioBackend::output_channels () const
319 CoreAudioBackend::systemic_input_latency () const
321 return _systemic_audio_input_latency;
325 CoreAudioBackend::systemic_output_latency () const
327 return _systemic_audio_output_latency;
331 CoreAudioBackend::systemic_midi_input_latency (std::string const device) const
333 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
335 return nfo->systemic_input_latency;
339 CoreAudioBackend::systemic_midi_output_latency (std::string const device) const
341 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
343 return nfo->systemic_output_latency;
347 struct CoreAudioBackend::CoreMidiDeviceInfo *
348 CoreAudioBackend::midi_device_info(std::string const name) const {
352 std::vector<std::string>
353 CoreAudioBackend::enumerate_midi_options () const
355 if (_midi_options.empty()) {
356 _midi_options.push_back (_("CoreMidi"));
357 _midi_options.push_back (_("None"));
359 return _midi_options;
362 std::vector<AudioBackend::DeviceStatus>
363 CoreAudioBackend::enumerate_midi_devices () const
365 _midi_device_status.clear();
366 std::map<std::string, std::string> devices;
367 //_midi_device_status.push_back (DeviceStatus (_("CoreMidi"), true));
368 return _midi_device_status;
372 CoreAudioBackend::set_midi_option (const std::string& opt)
374 if (opt != _("None") && opt != _("CoreMidi")) {
377 _midi_driver_option = opt;
382 CoreAudioBackend::midi_option () const
384 return _midi_driver_option;
388 CoreAudioBackend::set_midi_device_enabled (std::string const device, bool enable)
390 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
392 nfo->enabled = enable;
397 CoreAudioBackend::midi_device_enabled (std::string const device) const
399 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
400 if (!nfo) return false;
405 CoreAudioBackend::launch_control_app ()
407 _pcmio->launch_control_app(name_to_id(_audio_device));
412 static void * pthread_freewheel (void *arg)
414 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
415 d->freewheel_thread ();
420 static int process_callback_ptr (void *arg, const uint32_t n_samples, const uint64_t host_time)
422 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
423 return d->process_callback(n_samples, host_time);
427 CoreAudioBackend::_start (bool for_latency_measurement)
429 if ((!_active_ca || !_active_fw) && _run) {
430 // recover from 'halted', reap threads
434 if (_active_ca || _active_fw || _run) {
435 PBD::error << _("CoreAudioBackend: already active.") << endmsg;
440 PBD::warning << _("CoreAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
441 _system_inputs.clear();
442 _system_outputs.clear();
443 _system_midi_in.clear();
444 _system_midi_out.clear();
448 uint32_t device1 = name_to_id(_audio_device); // usually input, but in an aggregate, 1st defines the clock
449 uint32_t device2 = name_to_id(_audio_device); // usually output
451 assert(_active_ca == false);
452 assert(_active_fw == false);
454 _freewheel_ack = false;
455 _reinit_thread_callback = true;
456 _last_process_start = 0;
458 _pcmio->set_error_callback (error_callback_ptr, this);
459 _pcmio->set_buffer_size_callback (buffer_size_callback_ptr, this);
460 _pcmio->set_sample_rate_callback (sample_rate_callback_ptr, this);
462 _pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this);
464 switch (_pcmio->state ()) {
465 case 0: /* OK */ break;
466 case -1: PBD::error << _("CoreAudioBackend: failed to open device.") << endmsg; break;
467 default: PBD::error << _("CoreAudioBackend: initialization failed.") << endmsg; break;
469 if (_pcmio->state ()) {
473 if (_n_outputs != _pcmio->n_playback_channels ()) {
474 if (_n_outputs == 0) {
475 _n_outputs = _pcmio->n_playback_channels ();
477 _n_outputs = std::min (_n_outputs, _pcmio->n_playback_channels ());
479 PBD::info << _("CoreAudioBackend: adjusted output channel count to match device.") << endmsg;
482 if (_n_inputs != _pcmio->n_capture_channels ()) {
483 if (_n_inputs == 0) {
484 _n_inputs = _pcmio->n_capture_channels ();
486 _n_inputs = std::min (_n_inputs, _pcmio->n_capture_channels ());
488 PBD::info << _("CoreAudioBackend: adjusted input channel count to match device.") << endmsg;
491 if (_pcmio->samples_per_period() != _samples_per_period) {
492 _samples_per_period = _pcmio->samples_per_period();
493 PBD::warning << _("CoreAudioBackend: samples per period does not match.") << endmsg;
496 if (_pcmio->sample_rate() != _samplerate) {
497 _samplerate = _pcmio->sample_rate();
498 engine.sample_rate_change (_samplerate);
499 PBD::warning << _("CoreAudioBackend: sample rate does not match.") << endmsg;
502 _measure_latency = for_latency_measurement;
506 _port_change_flag = false;
508 if (_midi_driver_option == _("CoreMidi")) {
509 _midiio->set_enabled(true);
510 _midiio->set_port_changed_callback(midi_port_change, this);
511 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
514 if (register_system_audio_ports()) {
515 PBD::error << _("CoreAudioBackend: failed to register system ports.") << endmsg;
520 engine.sample_rate_change (_samplerate);
521 engine.buffer_size_change (_samples_per_period);
523 if (engine.reestablish_ports ()) {
524 PBD::error << _("CoreAudioBackend: Could not re-establish ports.") << endmsg;
529 if (pthread_create (&_freeewheel_thread, NULL, pthread_freewheel, this))
531 PBD::error << _("CoreAudioBackend: failed to create process thread.") << endmsg;
532 delete _pcmio; _pcmio = 0;
538 while ((!_active_ca || !_active_fw) && --timeout > 0) { Glib::usleep (1000); }
541 PBD::error << _("CoreAudioBackend: failed to start.") << endmsg;
545 PBD::error << _("CoreAudioBackend: failed to start freewheeling thread.") << endmsg;
555 PBD::error << _("CoreAudioBackend: failed to start coreaudio.") << endmsg;
561 engine.reconnect_ports ();
563 // force an initial registration_callback() & latency re-compute
564 _port_change_flag = true;
568 _pcmio->set_xrun_callback (xrun_callback_ptr, this);
575 CoreAudioBackend::stop ()
584 _midiio->set_port_changed_callback(NULL, NULL);
587 pthread_mutex_lock (&_freewheel_mutex);
588 pthread_cond_signal (&_freewheel_signal);
589 pthread_mutex_unlock (&_freewheel_mutex);
591 if (pthread_join (_freeewheel_thread, &status)) {
592 PBD::error << _("CoreAudioBackend: failed to terminate.") << endmsg;
599 _active_fw = false; // ??
605 CoreAudioBackend::freewheel (bool onoff)
607 if (onoff == _freewheeling) {
610 _freewheeling = onoff;
611 // wake up freewheeling thread
612 if (0 == pthread_mutex_trylock (&_freewheel_mutex)) {
613 pthread_cond_signal (&_freewheel_signal);
614 pthread_mutex_unlock (&_freewheel_mutex);
620 CoreAudioBackend::dsp_load () const
622 return 100.f * _dsp_load;
626 CoreAudioBackend::raw_buffer_size (DataType t)
629 case DataType::AUDIO:
630 return _samples_per_period * sizeof(Sample);
632 return _max_buffer_size; // XXX not really limited
639 CoreAudioBackend::sample_time ()
641 return _processed_samples;
645 CoreAudioBackend::sample_time_at_cycle_start ()
647 return _processed_samples;
651 CoreAudioBackend::samples_since_cycle_start ()
653 if (!_active_ca || !_run || _freewheeling || _freewheel) {
656 if (_last_process_start == 0) {
660 const uint64_t now = AudioGetCurrentHostTime ();
661 const int64_t elapsed_time_ns = AudioConvertHostTimeToNanos(now - _last_process_start);
662 return std::max((pframes_t)0, (pframes_t)rint(1e-9 * elapsed_time_ns * _samplerate));
666 CoreAudioBackend::name_to_id(std::string device_name) const {
667 uint32_t device_id = UINT32_MAX;
668 std::map<size_t, std::string> devices;
669 _pcmio->device_list(devices);
671 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
672 if (i->second == device_name) {
673 device_id = i->first;
681 CoreAudioBackend::coreaudio_process_thread (void *arg)
683 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
684 boost::function<void ()> f = td->f;
691 CoreAudioBackend::create_process_thread (boost::function<void()> func)
695 size_t stacksize = 100000;
697 ThreadData* td = new ThreadData (this, func, stacksize);
699 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
700 &thread_id, coreaudio_process_thread, td)) {
701 pthread_attr_init (&attr);
702 pthread_attr_setstacksize (&attr, stacksize);
703 if (pthread_create (&thread_id, &attr, coreaudio_process_thread, td)) {
704 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
705 pthread_attr_destroy (&attr);
708 pthread_attr_destroy (&attr);
711 _threads.push_back (thread_id);
716 CoreAudioBackend::join_process_threads ()
720 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
723 if (pthread_join (*i, &status)) {
724 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
733 CoreAudioBackend::in_process_thread ()
735 if (pthread_equal (_main_thread, pthread_self()) != 0) {
739 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
741 if (pthread_equal (*i, pthread_self ()) != 0) {
749 CoreAudioBackend::process_thread_count ()
751 return _threads.size ();
755 CoreAudioBackend::update_latencies ()
757 // trigger latency callback in RT thread (locked graph)
758 port_connect_add_remove_callback();
764 CoreAudioBackend::private_handle () const
770 CoreAudioBackend::my_name () const
772 return _instance_name;
776 CoreAudioBackend::available () const
778 return _run && _active_fw && _active_ca;
782 CoreAudioBackend::port_name_size () const
788 CoreAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
790 if (!valid_port (port)) {
791 PBD::error << _("CoreAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
794 return static_cast<CoreBackendPort*>(port)->set_name (_instance_name + ":" + name);
798 CoreAudioBackend::get_port_name (PortEngine::PortHandle port) const
800 if (!valid_port (port)) {
801 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
802 return std::string ();
804 return static_cast<CoreBackendPort*>(port)->name ();
808 CoreAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const
810 if (!valid_port (port)) {
811 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
814 if (key == "http://jackaudio.org/metadata/pretty-name") {
816 value = static_cast<CoreBackendPort*>(port)->pretty_name ();
817 if (!value.empty()) {
824 PortEngine::PortHandle
825 CoreAudioBackend::get_port_by_name (const std::string& name) const
827 PortHandle port = (PortHandle) find_port (name);
832 CoreAudioBackend::get_ports (
833 const std::string& port_name_pattern,
834 DataType type, PortFlags flags,
835 std::vector<std::string>& port_names) const
839 bool use_regexp = false;
840 if (port_name_pattern.size () > 0) {
841 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
845 for (size_t i = 0; i < _ports.size (); ++i) {
846 CoreBackendPort* port = _ports[i];
847 if ((port->type () == type) && (port->flags () & flags)) {
848 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
849 port_names.push_back (port->name ());
855 regfree (&port_regex);
861 CoreAudioBackend::port_data_type (PortEngine::PortHandle port) const
863 if (!valid_port (port)) {
864 return DataType::NIL;
866 return static_cast<CoreBackendPort*>(port)->type ();
869 PortEngine::PortHandle
870 CoreAudioBackend::register_port (
871 const std::string& name,
872 ARDOUR::DataType type,
873 ARDOUR::PortFlags flags)
875 if (name.size () == 0) { return 0; }
876 if (flags & IsPhysical) { return 0; }
877 return add_port (_instance_name + ":" + name, type, flags);
880 PortEngine::PortHandle
881 CoreAudioBackend::add_port (
882 const std::string& name,
883 ARDOUR::DataType type,
884 ARDOUR::PortFlags flags)
886 assert(name.size ());
887 if (find_port (name)) {
888 PBD::error << _("CoreAudioBackend::register_port: Port already exists:")
889 << " (" << name << ")" << endmsg;
892 CoreBackendPort* port = NULL;
894 case DataType::AUDIO:
895 port = new CoreAudioPort (*this, name, flags);
898 port = new CoreMidiPort (*this, name, flags);
901 PBD::error << _("CoreAudioBackend::register_port: Invalid Data Type.") << endmsg;
905 _ports.push_back (port);
911 CoreAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
916 CoreBackendPort* port = static_cast<CoreBackendPort*>(port_handle);
917 std::vector<CoreBackendPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<CoreBackendPort*>(port_handle));
918 if (i == _ports.end ()) {
919 PBD::error << _("CoreAudioBackend::unregister_port: Failed to find port") << endmsg;
922 disconnect_all(port_handle);
928 CoreAudioBackend::register_system_audio_ports()
932 const uint32_t a_ins = _n_inputs;
933 const uint32_t a_out = _n_outputs;
935 const uint32_t coreaudio_reported_input_latency = _pcmio->get_latency(name_to_id(_audio_device), true);
936 const uint32_t coreaudio_reported_output_latency = _pcmio->get_latency(name_to_id(_audio_device), false);
939 printf("COREAUDIO LATENCY: i:%d, o:%d\n",
940 coreaudio_reported_input_latency,
941 coreaudio_reported_output_latency);
945 lr.min = lr.max = coreaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
946 for (uint32_t i = 0; i < a_ins; ++i) {
948 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
949 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
951 set_latency_range (p, false, lr);
952 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
953 cp->set_pretty_name (_pcmio->cached_port_name(i, true));
954 _system_inputs.push_back(cp);
957 lr.min = lr.max = coreaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
958 for (uint32_t i = 0; i < a_out; ++i) {
960 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
961 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
963 set_latency_range (p, true, lr);
964 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
965 cp->set_pretty_name (_pcmio->cached_port_name(i, false));
966 _system_outputs.push_back(cp);
972 CoreAudioBackend::coremidi_rediscover()
974 if (!_run) { return; }
975 assert(_midi_driver_option == _("CoreMidi"));
977 pthread_mutex_lock (&_process_callback_mutex);
979 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) {
981 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
982 if ((*it)->name() == _midiio->port_id(i, false)) {
991 printf("unregister MIDI Output: %s\n", (*it)->name().c_str());
993 _port_change_flag = true;
994 unregister_port((*it));
995 it = _system_midi_out.erase(it);
999 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) {
1001 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
1002 if ((*it)->name() == _midiio->port_id(i, true)) {
1011 printf("unregister MIDI Input: %s\n", (*it)->name().c_str());
1013 _port_change_flag = true;
1014 unregister_port((*it));
1015 it = _system_midi_in.erase(it);
1019 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
1020 std::string name = _midiio->port_id(i, true);
1021 if (find_port_in(_system_midi_in, name)) {
1026 printf("register MIDI Input: %s\n", name.c_str());
1028 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1030 fprintf(stderr, "failed to register MIDI IN: %s\n", name.c_str());
1034 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1035 set_latency_range (p, false, lr);
1036 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
1037 pp->set_pretty_name(_midiio->port_name(i, true));
1038 _system_midi_in.push_back(pp);
1039 _port_change_flag = true;
1042 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
1043 std::string name = _midiio->port_id(i, false);
1044 if (find_port_in(_system_midi_out, name)) {
1049 printf("register MIDI OUT: %s\n", name.c_str());
1051 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1053 fprintf(stderr, "failed to register MIDI OUT: %s\n", name.c_str());
1057 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1058 set_latency_range (p, false, lr);
1059 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
1060 pp->set_pretty_name(_midiio->port_name(i, false));
1061 _system_midi_out.push_back(pp);
1062 _port_change_flag = true;
1066 assert(_system_midi_out.size() == _midiio->n_midi_outputs());
1067 assert(_system_midi_in.size() == _midiio->n_midi_inputs());
1069 pthread_mutex_unlock (&_process_callback_mutex);
1073 CoreAudioBackend::unregister_ports (bool system_only)
1076 _system_inputs.clear();
1077 _system_outputs.clear();
1078 _system_midi_in.clear();
1079 _system_midi_out.clear();
1080 while (i < _ports.size ()) {
1081 CoreBackendPort* port = _ports[i];
1082 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1083 port->disconnect_all ();
1085 _ports.erase (_ports.begin() + i);
1093 CoreAudioBackend::connect (const std::string& src, const std::string& dst)
1095 CoreBackendPort* src_port = find_port (src);
1096 CoreBackendPort* dst_port = find_port (dst);
1099 PBD::error << _("CoreAudioBackend::connect: Invalid Source port:")
1100 << " (" << src <<")" << endmsg;
1104 PBD::error << _("CoreAudioBackend::connect: Invalid Destination port:")
1105 << " (" << dst <<")" << endmsg;
1108 return src_port->connect (dst_port);
1112 CoreAudioBackend::disconnect (const std::string& src, const std::string& dst)
1114 CoreBackendPort* src_port = find_port (src);
1115 CoreBackendPort* dst_port = find_port (dst);
1117 if (!src_port || !dst_port) {
1118 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1121 return src_port->disconnect (dst_port);
1125 CoreAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1127 CoreBackendPort* dst_port = find_port (dst);
1128 if (!valid_port (src)) {
1129 PBD::error << _("CoreAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1133 PBD::error << _("CoreAudioBackend::connect: Invalid Destination Port")
1134 << " (" << dst << ")" << endmsg;
1137 return static_cast<CoreBackendPort*>(src)->connect (dst_port);
1141 CoreAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1143 CoreBackendPort* dst_port = find_port (dst);
1144 if (!valid_port (src) || !dst_port) {
1145 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1148 return static_cast<CoreBackendPort*>(src)->disconnect (dst_port);
1152 CoreAudioBackend::disconnect_all (PortEngine::PortHandle port)
1154 if (!valid_port (port)) {
1155 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1158 static_cast<CoreBackendPort*>(port)->disconnect_all ();
1163 CoreAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1165 if (!valid_port (port)) {
1166 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1169 return static_cast<CoreBackendPort*>(port)->is_connected ();
1173 CoreAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1175 CoreBackendPort* dst_port = find_port (dst);
1176 if (!valid_port (src) || !dst_port) {
1177 PBD::error << _("CoreAudioBackend::connected_to: Invalid Port") << endmsg;
1180 return static_cast<CoreBackendPort*>(src)->is_connected (dst_port);
1184 CoreAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1186 if (!valid_port (port)) {
1187 PBD::error << _("CoreAudioBackend::physically_connected: Invalid Port") << endmsg;
1190 return static_cast<CoreBackendPort*>(port)->is_physically_connected ();
1194 CoreAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1196 if (!valid_port (port)) {
1197 PBD::error << _("CoreAudioBackend::get_connections: Invalid Port") << endmsg;
1201 assert (0 == names.size ());
1203 const std::vector<CoreBackendPort*>& connected_ports = static_cast<CoreBackendPort*>(port)->get_connections ();
1205 for (std::vector<CoreBackendPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1206 names.push_back ((*i)->name ());
1209 return (int)names.size ();
1214 CoreAudioBackend::midi_event_get (
1215 pframes_t& timestamp,
1216 size_t& size, uint8_t** buf, void* port_buffer,
1217 uint32_t event_index)
1219 if (!buf || !port_buffer) return -1;
1220 CoreMidiBuffer& source = * static_cast<CoreMidiBuffer*>(port_buffer);
1221 if (event_index >= source.size ()) {
1224 CoreMidiEvent * const event = source[event_index].get ();
1226 timestamp = event->timestamp ();
1227 size = event->size ();
1228 *buf = event->data ();
1233 CoreAudioBackend::midi_event_put (
1235 pframes_t timestamp,
1236 const uint8_t* buffer, size_t size)
1238 if (!buffer || !port_buffer) return -1;
1239 CoreMidiBuffer& dst = * static_cast<CoreMidiBuffer*>(port_buffer);
1240 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1242 // nevermind, ::get_buffer() sorts events
1243 fprintf (stderr, "CoreMidiBuffer: unordered event: %d > %d\n",
1244 (pframes_t)dst.back ()->timestamp (), timestamp);
1247 dst.push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (timestamp, buffer, size)));
1252 CoreAudioBackend::get_midi_event_count (void* port_buffer)
1254 if (!port_buffer) return 0;
1255 return static_cast<CoreMidiBuffer*>(port_buffer)->size ();
1259 CoreAudioBackend::midi_clear (void* port_buffer)
1261 if (!port_buffer) return;
1262 CoreMidiBuffer * buf = static_cast<CoreMidiBuffer*>(port_buffer);
1270 CoreAudioBackend::can_monitor_input () const
1276 CoreAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1282 CoreAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1288 CoreAudioBackend::monitoring_input (PortEngine::PortHandle)
1293 /* Latency management */
1296 CoreAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1298 if (!valid_port (port)) {
1299 PBD::error << _("CoreBackendPort::set_latency_range (): invalid port.") << endmsg;
1301 static_cast<CoreBackendPort*>(port)->set_latency_range (latency_range, for_playback);
1305 CoreAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1308 if (!valid_port (port)) {
1309 PBD::error << _("CoreBackendPort::get_latency_range (): invalid port.") << endmsg;
1313 CoreBackendPort* p = static_cast<CoreBackendPort*>(port);
1316 r = p->latency_range (for_playback);
1317 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1318 if (p->is_input() && for_playback) {
1319 r.min += _samples_per_period;
1320 r.max += _samples_per_period;
1322 if (p->is_output() && !for_playback) {
1323 r.min += _samples_per_period;
1324 r.max += _samples_per_period;
1330 /* Discovering physical ports */
1333 CoreAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1335 if (!valid_port (port)) {
1336 PBD::error << _("CoreBackendPort::port_is_physical (): invalid port.") << endmsg;
1339 return static_cast<CoreBackendPort*>(port)->is_physical ();
1343 CoreAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1345 for (size_t i = 0; i < _ports.size (); ++i) {
1346 CoreBackendPort* port = _ports[i];
1347 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1348 port_names.push_back (port->name ());
1354 CoreAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1356 for (size_t i = 0; i < _ports.size (); ++i) {
1357 CoreBackendPort* port = _ports[i];
1358 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1359 port_names.push_back (port->name ());
1365 CoreAudioBackend::n_physical_outputs () const
1369 for (size_t i = 0; i < _ports.size (); ++i) {
1370 CoreBackendPort* port = _ports[i];
1371 if (port->is_output () && port->is_physical ()) {
1372 switch (port->type ()) {
1373 case DataType::AUDIO: ++n_audio; break;
1374 case DataType::MIDI: ++n_midi; break;
1380 cc.set (DataType::AUDIO, n_audio);
1381 cc.set (DataType::MIDI, n_midi);
1386 CoreAudioBackend::n_physical_inputs () const
1390 for (size_t i = 0; i < _ports.size (); ++i) {
1391 CoreBackendPort* port = _ports[i];
1392 if (port->is_input () && port->is_physical ()) {
1393 switch (port->type ()) {
1394 case DataType::AUDIO: ++n_audio; break;
1395 case DataType::MIDI: ++n_midi; break;
1401 cc.set (DataType::AUDIO, n_audio);
1402 cc.set (DataType::MIDI, n_midi);
1406 /* Getting access to the data buffer for a port */
1409 CoreAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1411 if (!port || !valid_port (port)) return NULL;
1412 return static_cast<CoreBackendPort*>(port)->get_buffer (nframes);
1416 CoreAudioBackend::pre_process ()
1418 bool connections_changed = false;
1419 bool ports_changed = false;
1420 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1421 if (_port_change_flag) {
1422 ports_changed = true;
1423 _port_change_flag = false;
1425 if (!_port_connection_queue.empty ()) {
1426 connections_changed = true;
1428 while (!_port_connection_queue.empty ()) {
1429 PortConnectData *c = _port_connection_queue.back ();
1430 manager.connect_callback (c->a, c->b, c->c);
1431 _port_connection_queue.pop_back ();
1434 pthread_mutex_unlock (&_port_callback_mutex);
1436 if (ports_changed) {
1437 manager.registration_callback();
1439 if (connections_changed) {
1440 manager.graph_order_callback();
1442 if (connections_changed || ports_changed) {
1443 engine.latency_callback(false);
1444 engine.latency_callback(true);
1449 CoreAudioBackend::freewheel_thread ()
1452 bool first_run = false;
1453 /* Freewheeling - use for export. The first call to
1454 * engine.process_callback() after engine.freewheel_callback will
1455 * if the first export cycle.
1456 * For reliable precise export timing, the calls need to be in sync.
1458 * Furthermore we need to make sure the registered process thread
1461 * _freewheeling = GUI thread state as set by ::freewheel()
1462 * _freewheel = in sync here (export thread)
1464 pthread_mutex_lock (&_freewheel_mutex);
1466 // check if we should run,
1467 if (_freewheeling != _freewheel) {
1468 if (!_freewheeling) {
1469 // prepare leaving freewheeling mode
1470 _freewheel = false; // first mark as disabled
1471 _reinit_thread_callback = true; // hand over _main_thread
1472 _freewheel_ack = false; // prepare next handshake
1473 _midiio->set_enabled(true);
1480 if (!_freewheel || !_freewheel_ack) {
1481 // wait for a change, we use a timed wait to
1482 // terminate early in case some error sets _run = 0
1485 gettimeofday (&tv, NULL);
1486 ts.tv_sec = tv.tv_sec + 3;
1488 pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts);
1493 // tell the engine we're ready to GO.
1494 engine.freewheel_callback (_freewheeling);
1496 _main_thread = pthread_self();
1497 AudioEngine::thread_init_callback (this);
1498 _midiio->set_enabled(false);
1501 // process port updates first in every cycle.
1504 // prevent coreaudio device changes
1505 pthread_mutex_lock (&_process_callback_mutex);
1509 // clear input buffers
1510 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1511 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1513 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
1514 static_cast<CoreMidiBuffer*>((*it)->get_buffer(0))->clear ();
1517 _last_process_start = 0;
1518 if (engine.process_callback (_samples_per_period)) {
1519 pthread_mutex_unlock (&_process_callback_mutex);
1523 pthread_mutex_unlock (&_process_callback_mutex);
1525 Glib::usleep (100); // don't hog cpu
1528 pthread_mutex_unlock (&_freewheel_mutex);
1533 // engine.process_callback() returner error
1534 engine.halted_callback("CoreAudio Freehweeling aborted.");
1540 CoreAudioBackend::process_callback (const uint32_t n_samples, const uint64_t host_time)
1543 uint64_t clock1, clock2;
1547 if (_run && _freewheel && !_freewheel_ack) {
1548 // acknowledge freewheeling; hand-over thread ID
1549 pthread_mutex_lock (&_freewheel_mutex);
1550 if (_freewheel) _freewheel_ack = true;
1551 pthread_cond_signal (&_freewheel_signal);
1552 pthread_mutex_unlock (&_freewheel_mutex);
1555 if (!_run || _freewheel || _preinit) {
1556 // NB if we return 1, the output is
1557 // zeroed by the coreaudio callback
1561 if (_reinit_thread_callback || _main_thread != pthread_self()) {
1562 _reinit_thread_callback = false;
1563 _main_thread = pthread_self();
1564 AudioEngine::thread_init_callback (this);
1567 if (pthread_mutex_trylock (&_process_callback_mutex)) {
1568 // block while devices are added/removed
1570 printf("Xrun due to device change\n");
1575 /* port-connection change */
1578 // cycle-length in usec
1579 const double nominal_time = 1e6 * n_samples / _samplerate;
1581 clock1 = g_get_monotonic_time();
1585 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1586 CoreMidiBuffer* mbuf = static_cast<CoreMidiBuffer*>((*it)->get_buffer(0));
1589 uint8_t data[64]; // match MaxAlsaEventSize in alsa_rawmidi.cc
1590 size_t size = sizeof(data);
1591 while (_midiio->recv_event (i, nominal_time, time_ns, data, size)) {
1592 pframes_t time = floor((float) time_ns * _samplerate * 1e-9);
1593 assert (time < n_samples);
1594 midi_event_put((void*)mbuf, time, data, size);
1595 size = sizeof(data);
1601 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1602 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(n_samples)), n_samples);
1605 /* clear output buffers */
1606 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1607 memset ((*it)->get_buffer (n_samples), 0, n_samples * sizeof (Sample));
1610 _midiio->start_cycle();
1611 _last_process_start = host_time;
1613 if (engine.process_callback (n_samples)) {
1614 fprintf(stderr, "ENGINE PROCESS ERROR\n");
1615 //_pcmio->pcm_stop ();
1617 pthread_mutex_unlock (&_process_callback_mutex);
1622 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1623 static_cast<CoreMidiPort*>(*it)->get_buffer(0);
1626 /* queue outgoing midi */
1628 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1629 #if 0 // something's still b0rked with CoreMidiIo::send_events()
1630 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1631 _midiio->send_events (i, nominal_time, (void*)src);
1633 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1634 for (CoreMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1635 _midiio->send_event (i, (*mit)->timestamp() / nominal_time, (*mit)->data(), (*mit)->size());
1640 /* write back audio */
1642 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1643 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (n_samples), n_samples);
1646 _processed_samples += n_samples;
1648 /* calc DSP load. */
1649 clock2 = g_get_monotonic_time();
1650 const int64_t elapsed_time = clock2 - clock1;
1651 _dsp_load = elapsed_time / nominal_time;
1653 pthread_mutex_unlock (&_process_callback_mutex);
1658 CoreAudioBackend::error_callback ()
1660 _pcmio->set_error_callback (NULL, NULL);
1661 _pcmio->set_sample_rate_callback (NULL, NULL);
1662 _pcmio->set_xrun_callback (NULL, NULL);
1663 _midiio->set_port_changed_callback(NULL, NULL);
1664 engine.halted_callback("CoreAudio Process aborted.");
1669 CoreAudioBackend::xrun_callback ()
1675 CoreAudioBackend::buffer_size_callback ()
1677 uint32_t bs = _pcmio->samples_per_period();
1678 if (bs == _samples_per_period) {
1681 _samples_per_period = bs;
1682 engine.buffer_size_change (_samples_per_period);
1686 CoreAudioBackend::sample_rate_callback ()
1688 _pcmio->set_error_callback (NULL, NULL);
1689 _pcmio->set_sample_rate_callback (NULL, NULL);
1690 _pcmio->set_xrun_callback (NULL, NULL);
1691 _midiio->set_port_changed_callback(NULL, NULL);
1692 engine.halted_callback("Sample Rate Changed.");
1697 CoreAudioBackend::hw_changed_callback ()
1699 _reinit_thread_callback = true;
1700 engine.request_device_list_update();
1703 /******************************************************************************/
1705 static boost::shared_ptr<CoreAudioBackend> _instance;
1707 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1708 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1709 static int deinstantiate ();
1710 static bool already_configured ();
1711 static bool available ();
1713 static ARDOUR::AudioBackendInfo _descriptor = {
1722 static boost::shared_ptr<AudioBackend>
1723 backend_factory (AudioEngine& e)
1726 _instance.reset (new CoreAudioBackend (e, _descriptor));
1732 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1734 s_instance_name = arg1;
1746 already_configured ()
1757 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1759 return &_descriptor;
1763 /******************************************************************************/
1764 CoreBackendPort::CoreBackendPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1769 _capture_latency_range.min = 0;
1770 _capture_latency_range.max = 0;
1771 _playback_latency_range.min = 0;
1772 _playback_latency_range.max = 0;
1775 CoreBackendPort::~CoreBackendPort () {
1780 int CoreBackendPort::connect (CoreBackendPort *port)
1783 PBD::error << _("CoreBackendPort::connect (): invalid (null) port") << endmsg;
1787 if (type () != port->type ()) {
1788 PBD::error << _("CoreBackendPort::connect (): wrong port-type") << endmsg;
1792 if (is_output () && port->is_output ()) {
1793 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect output ports.") << endmsg;
1797 if (is_input () && port->is_input ()) {
1798 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect input ports.") << endmsg;
1803 PBD::error << _("CoreBackendPort::connect (): cannot self-connect ports.") << endmsg;
1807 if (is_connected (port)) {
1808 #if 0 // don't bother to warn about this for now. just ignore it
1809 PBD::error << _("CoreBackendPort::connect (): ports are already connected:")
1810 << " (" << name () << ") -> (" << port->name () << ")"
1816 _connect (port, true);
1821 void CoreBackendPort::_connect (CoreBackendPort *port, bool callback)
1823 _connections.push_back (port);
1825 port->_connect (this, false);
1826 _osx_backend.port_connect_callback (name(), port->name(), true);
1830 int CoreBackendPort::disconnect (CoreBackendPort *port)
1833 PBD::error << _("CoreBackendPort::disconnect (): invalid (null) port") << endmsg;
1837 if (!is_connected (port)) {
1838 PBD::error << _("CoreBackendPort::disconnect (): ports are not connected:")
1839 << " (" << name () << ") -> (" << port->name () << ")"
1843 _disconnect (port, true);
1847 void CoreBackendPort::_disconnect (CoreBackendPort *port, bool callback)
1849 std::vector<CoreBackendPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1851 assert (it != _connections.end ());
1853 _connections.erase (it);
1856 port->_disconnect (this, false);
1857 _osx_backend.port_connect_callback (name(), port->name(), false);
1862 void CoreBackendPort::disconnect_all ()
1864 while (!_connections.empty ()) {
1865 _connections.back ()->_disconnect (this, false);
1866 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1867 _connections.pop_back ();
1872 CoreBackendPort::is_connected (const CoreBackendPort *port) const
1874 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1877 bool CoreBackendPort::is_physically_connected () const
1879 for (std::vector<CoreBackendPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1880 if ((*it)->is_physical ()) {
1887 /******************************************************************************/
1889 CoreAudioPort::CoreAudioPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1890 : CoreBackendPort (b, name, flags)
1892 memset (_buffer, 0, sizeof (_buffer));
1893 mlock(_buffer, sizeof (_buffer));
1896 CoreAudioPort::~CoreAudioPort () { }
1898 void* CoreAudioPort::get_buffer (pframes_t n_samples)
1901 std::vector<CoreBackendPort*>::const_iterator it = get_connections ().begin ();
1902 if (it == get_connections ().end ()) {
1903 memset (_buffer, 0, n_samples * sizeof (Sample));
1905 CoreAudioPort const * source = static_cast<const CoreAudioPort*>(*it);
1906 assert (source && source->is_output ());
1907 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1908 while (++it != get_connections ().end ()) {
1909 source = static_cast<const CoreAudioPort*>(*it);
1910 assert (source && source->is_output ());
1911 Sample* dst = buffer ();
1912 const Sample* src = source->const_buffer ();
1913 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1923 CoreMidiPort::CoreMidiPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1924 : CoreBackendPort (b, name, flags)
1928 _buffer[0].clear ();
1929 _buffer[1].clear ();
1932 CoreMidiPort::~CoreMidiPort () { }
1934 struct MidiEventSorter {
1935 bool operator() (const boost::shared_ptr<CoreMidiEvent>& a, const boost::shared_ptr<CoreMidiEvent>& b) {
1940 void* CoreMidiPort::get_buffer (pframes_t /* nframes */)
1943 (_buffer[_bufperiod]).clear ();
1944 for (std::vector<CoreBackendPort*>::const_iterator i = get_connections ().begin ();
1945 i != get_connections ().end ();
1947 const CoreMidiBuffer * src = static_cast<const CoreMidiPort*>(*i)->const_buffer ();
1948 for (CoreMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1949 (_buffer[_bufperiod]).push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (**it)));
1952 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1954 return &(_buffer[_bufperiod]);
1957 CoreMidiEvent::CoreMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1959 , _timestamp (timestamp)
1963 _data = (uint8_t*) malloc (size);
1964 memcpy (_data, data, size);
1968 CoreMidiEvent::CoreMidiEvent (const CoreMidiEvent& other)
1969 : _size (other.size ())
1970 , _timestamp (other.timestamp ())
1973 if (other.size () && other.const_data ()) {
1974 _data = (uint8_t*) malloc (other.size ());
1975 memcpy (_data, other.const_data (), other.size ());
1979 CoreMidiEvent::~CoreMidiEvent () {