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.
21 /* use an additional midi message parser
23 * coreaudio does packetize midi. every packet includes a timestamp.
24 * With any real midi-device with a phyical layer
25 * 1 packet = 1 event (no concurrent events are possible on a cable)
27 * Howver, some USB-midi keyboards manage to send concurrent events
28 * which end up in the same packet (eg. 6 byte message: 2 note-on).
30 * An additional parser is needed to separate them
32 #define USE_MIDI_PARSER
41 #include "coreaudio_backend.h"
42 #include "rt_thread.h"
44 #include "pbd/compose.h"
45 #include "pbd/error.h"
46 #include "pbd/file_utils.h"
47 #include "ardour/filesystem_paths.h"
48 #include "ardour/port_manager.h"
51 using namespace ARDOUR;
53 static std::string s_instance_name;
54 size_t CoreAudioBackend::_max_buffer_size = 8192;
55 std::vector<std::string> CoreAudioBackend::_midi_options;
56 std::vector<AudioBackend::DeviceStatus> CoreAudioBackend::_duplex_audio_device_status;
57 std::vector<AudioBackend::DeviceStatus> CoreAudioBackend::_input_audio_device_status;
58 std::vector<AudioBackend::DeviceStatus> CoreAudioBackend::_output_audio_device_status;
61 /* static class instance access */
62 static void hw_changed_callback_ptr (void *arg)
64 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
65 d->hw_changed_callback();
68 static void error_callback_ptr (void *arg)
70 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
74 static void xrun_callback_ptr (void *arg)
76 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
80 static void buffer_size_callback_ptr (void *arg)
82 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
83 d->buffer_size_callback();
86 static void sample_rate_callback_ptr (void *arg)
88 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
89 d->sample_rate_callback();
92 static void midi_port_change (void *arg)
94 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
95 d->coremidi_rediscover ();
99 CoreAudioBackend::CoreAudioBackend (AudioEngine& e, AudioBackendInfo& info)
100 : AudioBackend (e, info)
104 , _freewheeling (false)
106 , _freewheel_ack (false)
107 , _reinit_thread_callback (false)
108 , _measure_latency (false)
109 , _last_process_start (0)
110 , _input_audio_device("")
111 , _output_audio_device("")
112 , _midi_driver_option(_("None"))
113 , _samplerate (48000)
114 , _samples_per_period (1024)
117 , _systemic_audio_input_latency (0)
118 , _systemic_audio_output_latency (0)
120 , _processed_samples (0)
121 , _port_change_flag (false)
122 #ifdef USE_MIDI_PARSER
123 , _unbuffered_bytes(0)
130 _instance_name = s_instance_name;
131 pthread_mutex_init (&_port_callback_mutex, 0);
132 pthread_mutex_init (&_process_callback_mutex, 0);
133 pthread_mutex_init (&_freewheel_mutex, 0);
134 pthread_cond_init (&_freewheel_signal, 0);
136 _pcmio = new CoreAudioPCM ();
137 _midiio = new CoreMidiIo ();
139 _pcmio->set_hw_changed_callback (hw_changed_callback_ptr, this);
143 CoreAudioBackend::~CoreAudioBackend ()
145 delete _pcmio; _pcmio = 0;
146 delete _midiio; _midiio = 0;
147 pthread_mutex_destroy (&_port_callback_mutex);
148 pthread_mutex_destroy (&_process_callback_mutex);
149 pthread_mutex_destroy (&_freewheel_mutex);
150 pthread_cond_destroy (&_freewheel_signal);
153 /* AUDIOBACKEND API */
156 CoreAudioBackend::name () const
158 return X_("CoreAudio");
162 CoreAudioBackend::is_realtime () const
167 std::vector<AudioBackend::DeviceStatus>
168 CoreAudioBackend::enumerate_devices () const
170 _duplex_audio_device_status.clear();
171 std::map<size_t, std::string> devices;
172 _pcmio->duplex_device_list(devices);
174 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
175 if (_input_audio_device == "") _input_audio_device = i->second;
176 if (_output_audio_device == "") _output_audio_device = i->second;
177 _duplex_audio_device_status.push_back (DeviceStatus (i->second, true));
179 return _duplex_audio_device_status;
182 std::vector<AudioBackend::DeviceStatus>
183 CoreAudioBackend::enumerate_input_devices () const
185 _input_audio_device_status.clear();
186 std::map<size_t, std::string> devices;
187 _pcmio->input_device_list(devices);
189 _input_audio_device_status.push_back (DeviceStatus (_("None"), true));
190 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
191 if (_input_audio_device == "") _input_audio_device = i->second;
192 _input_audio_device_status.push_back (DeviceStatus (i->second, true));
194 return _input_audio_device_status;
198 std::vector<AudioBackend::DeviceStatus>
199 CoreAudioBackend::enumerate_output_devices () const
201 _output_audio_device_status.clear();
202 std::map<size_t, std::string> devices;
203 _pcmio->output_device_list(devices);
205 _output_audio_device_status.push_back (DeviceStatus (_("None"), true));
206 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
207 if (_output_audio_device == "") _output_audio_device = i->second;
208 _output_audio_device_status.push_back (DeviceStatus (i->second, true));
210 return _output_audio_device_status;
214 CoreAudioBackend::available_sample_rates (const std::string&) const
216 std::vector<float> sr;
217 std::vector<float> sr_in;
218 std::vector<float> sr_out;
220 const uint32_t inp = name_to_id(_input_audio_device);
221 const uint32_t out = name_to_id(_output_audio_device);
222 if (inp == UINT32_MAX && out == UINT32_MAX) {
224 } else if (inp == UINT32_MAX) {
225 _pcmio->available_sample_rates(out, sr_out);
227 } else if (out == UINT32_MAX) {
228 _pcmio->available_sample_rates(inp, sr_in);
231 _pcmio->available_sample_rates(inp, sr_in);
232 _pcmio->available_sample_rates(out, sr_out);
233 // TODO allow to use different SR per device, tweak aggregate
234 std::set_intersection(sr_in.begin(), sr_in.end(), sr_out.begin(), sr_out.end(), std::back_inserter(sr));
239 std::vector<uint32_t>
240 CoreAudioBackend::available_buffer_sizes (const std::string& device) const
242 std::vector<uint32_t> bs;
243 _pcmio->available_buffer_sizes(name_to_id(device), bs);
248 CoreAudioBackend::available_input_channel_count (const std::string&) const
250 return 128; // TODO query current device
254 CoreAudioBackend::available_output_channel_count (const std::string&) const
256 return 128; // TODO query current device
260 CoreAudioBackend::can_change_sample_rate_when_running () const
266 CoreAudioBackend::can_change_buffer_size_when_running () const
272 CoreAudioBackend::set_device_name (const std::string& d)
275 rv |= set_input_device_name (d);
276 rv |= set_output_device_name (d);
281 CoreAudioBackend::set_input_device_name (const std::string& d)
283 _input_audio_device = d;
284 const float sr = _pcmio->current_sample_rate(name_to_id(_input_audio_device));
285 if (sr > 0) { set_sample_rate(sr); }
290 CoreAudioBackend::set_output_device_name (const std::string& d)
292 _output_audio_device = d;
294 const float sr = _pcmio->current_sample_rate(name_to_id(_output_audio_device));
295 if (sr > 0) { set_sample_rate(sr); }
300 CoreAudioBackend::set_sample_rate (float sr)
302 std::vector<float> srs = available_sample_rates (/* really ignored */_input_audio_device);
303 if (std::find(srs.begin(), srs.end(), sr) == srs.end()) {
307 engine.sample_rate_change (sr);
312 CoreAudioBackend::set_buffer_size (uint32_t bs)
314 if (bs <= 0 || bs >= _max_buffer_size) {
317 _samples_per_period = bs;
318 _pcmio->set_samples_per_period(bs);
319 engine.buffer_size_change (bs);
324 CoreAudioBackend::set_interleaved (bool yn)
326 if (!yn) { return 0; }
331 CoreAudioBackend::set_input_channels (uint32_t cc)
338 CoreAudioBackend::set_output_channels (uint32_t cc)
345 CoreAudioBackend::set_systemic_input_latency (uint32_t sl)
347 _systemic_audio_input_latency = sl;
352 CoreAudioBackend::set_systemic_output_latency (uint32_t sl)
354 _systemic_audio_output_latency = sl;
358 /* Retrieving parameters */
360 CoreAudioBackend::device_name () const
366 CoreAudioBackend::input_device_name () const
368 return _input_audio_device;
372 CoreAudioBackend::output_device_name () const
374 return _output_audio_device;
378 CoreAudioBackend::sample_rate () const
384 CoreAudioBackend::buffer_size () const
386 return _samples_per_period;
390 CoreAudioBackend::interleaved () const
396 CoreAudioBackend::input_channels () const
402 CoreAudioBackend::output_channels () const
408 CoreAudioBackend::systemic_input_latency () const
410 return _systemic_audio_input_latency;
414 CoreAudioBackend::systemic_output_latency () const
416 return _systemic_audio_output_latency;
421 std::vector<std::string>
422 CoreAudioBackend::enumerate_midi_options () const
424 if (_midi_options.empty()) {
425 _midi_options.push_back (_("CoreMidi"));
426 _midi_options.push_back (_("None"));
428 return _midi_options;
432 CoreAudioBackend::set_midi_option (const std::string& opt)
434 if (opt != _("None") && opt != _("CoreMidi")) {
437 _midi_driver_option = opt;
442 CoreAudioBackend::midi_option () const
444 return _midi_driver_option;
448 CoreAudioBackend::launch_control_app ()
450 _pcmio->launch_control_app(name_to_id(_input_audio_device));
455 static void * pthread_freewheel (void *arg)
457 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
458 d->freewheel_thread ();
463 static int process_callback_ptr (void *arg, const uint32_t n_samples, const uint64_t host_time)
465 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
466 return d->process_callback(n_samples, host_time);
470 CoreAudioBackend::_start (bool for_latency_measurement)
472 if ((!_active_ca || !_active_fw) && _run) {
473 // recover from 'halted', reap threads
477 if (_active_ca || _active_fw || _run) {
478 PBD::error << _("CoreAudioBackend: already active.") << endmsg;
483 PBD::warning << _("CoreAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
484 _system_inputs.clear();
485 _system_outputs.clear();
486 _system_midi_in.clear();
487 _system_midi_out.clear();
491 uint32_t device1 = name_to_id(_input_audio_device);
492 uint32_t device2 = name_to_id(_output_audio_device);
494 assert(_active_ca == false);
495 assert(_active_fw == false);
497 _freewheel_ack = false;
498 _reinit_thread_callback = true;
499 _last_process_start = 0;
501 _pcmio->set_error_callback (error_callback_ptr, this);
502 _pcmio->set_buffer_size_callback (buffer_size_callback_ptr, this);
503 _pcmio->set_sample_rate_callback (sample_rate_callback_ptr, this);
505 _pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this);
506 printf("STATE: %d\n", _pcmio->state ());
508 switch (_pcmio->state ()) {
509 case 0: /* OK */ break;
510 case -1: PBD::error << _("CoreAudioBackend: failed to open device.") << endmsg; break;
511 default: PBD::error << _("CoreAudioBackend: initialization failed.") << endmsg; break;
513 if (_pcmio->state ()) {
517 if (_n_outputs != _pcmio->n_playback_channels ()) {
518 if (_n_outputs == 0) {
519 _n_outputs = _pcmio->n_playback_channels ();
521 _n_outputs = std::min (_n_outputs, _pcmio->n_playback_channels ());
523 PBD::info << _("CoreAudioBackend: adjusted output channel count to match device.") << endmsg;
526 if (_n_inputs != _pcmio->n_capture_channels ()) {
527 if (_n_inputs == 0) {
528 _n_inputs = _pcmio->n_capture_channels ();
530 _n_inputs = std::min (_n_inputs, _pcmio->n_capture_channels ());
532 PBD::info << _("CoreAudioBackend: adjusted input channel count to match device.") << endmsg;
535 if (_pcmio->samples_per_period() != _samples_per_period) {
536 _samples_per_period = _pcmio->samples_per_period();
537 PBD::warning << _("CoreAudioBackend: samples per period does not match.") << endmsg;
540 if (_pcmio->sample_rate() != _samplerate) {
541 _samplerate = _pcmio->sample_rate();
542 engine.sample_rate_change (_samplerate);
543 PBD::warning << _("CoreAudioBackend: sample rate does not match.") << endmsg;
546 _measure_latency = for_latency_measurement;
550 _port_change_flag = false;
552 if (_midi_driver_option == _("CoreMidi")) {
553 _midiio->set_enabled(true);
554 _midiio->set_port_changed_callback(midi_port_change, this);
555 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
558 if (register_system_audio_ports()) {
559 PBD::error << _("CoreAudioBackend: failed to register system ports.") << endmsg;
564 engine.sample_rate_change (_samplerate);
565 engine.buffer_size_change (_samples_per_period);
567 if (engine.reestablish_ports ()) {
568 PBD::error << _("CoreAudioBackend: Could not re-establish ports.") << endmsg;
573 if (pthread_create (&_freeewheel_thread, NULL, pthread_freewheel, this))
575 PBD::error << _("CoreAudioBackend: failed to create process thread.") << endmsg;
576 delete _pcmio; _pcmio = 0;
582 while ((!_active_ca || !_active_fw) && --timeout > 0) { Glib::usleep (1000); }
585 PBD::error << _("CoreAudioBackend: failed to start.") << endmsg;
589 PBD::error << _("CoreAudioBackend: failed to start freewheeling thread.") << endmsg;
599 PBD::error << _("CoreAudioBackend: failed to start coreaudio.") << endmsg;
605 engine.reconnect_ports ();
607 // force an initial registration_callback() & latency re-compute
608 _port_change_flag = true;
612 _pcmio->set_xrun_callback (xrun_callback_ptr, this);
619 CoreAudioBackend::stop ()
628 _midiio->set_port_changed_callback(NULL, NULL);
631 pthread_mutex_lock (&_freewheel_mutex);
632 pthread_cond_signal (&_freewheel_signal);
633 pthread_mutex_unlock (&_freewheel_mutex);
635 if (pthread_join (_freeewheel_thread, &status)) {
636 PBD::error << _("CoreAudioBackend: failed to terminate.") << endmsg;
643 _active_fw = false; // ??
649 CoreAudioBackend::freewheel (bool onoff)
651 if (onoff == _freewheeling) {
654 _freewheeling = onoff;
655 // wake up freewheeling thread
656 if (0 == pthread_mutex_trylock (&_freewheel_mutex)) {
657 pthread_cond_signal (&_freewheel_signal);
658 pthread_mutex_unlock (&_freewheel_mutex);
664 CoreAudioBackend::dsp_load () const
666 return std::min(100.f, 100.f * _dsp_load);
670 CoreAudioBackend::raw_buffer_size (DataType t)
673 case DataType::AUDIO:
674 return _samples_per_period * sizeof(Sample);
676 return _max_buffer_size; // XXX not really limited
683 CoreAudioBackend::sample_time ()
685 return _processed_samples;
689 CoreAudioBackend::sample_time_at_cycle_start ()
691 return _processed_samples;
695 CoreAudioBackend::samples_since_cycle_start ()
697 if (!_active_ca || !_run || _freewheeling || _freewheel) {
700 if (_last_process_start == 0) {
704 const uint64_t now = AudioGetCurrentHostTime ();
705 const int64_t elapsed_time_ns = AudioConvertHostTimeToNanos(now - _last_process_start);
706 return std::max((pframes_t)0, (pframes_t)rint(1e-9 * elapsed_time_ns * _samplerate));
710 CoreAudioBackend::name_to_id(std::string device_name) const {
711 uint32_t device_id = UINT32_MAX;
712 std::map<size_t, std::string> devices;
713 _pcmio->device_list(devices);
715 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
716 if (i->second == device_name) {
717 device_id = i->first;
725 CoreAudioBackend::coreaudio_process_thread (void *arg)
727 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
728 boost::function<void ()> f = td->f;
735 CoreAudioBackend::create_process_thread (boost::function<void()> func)
739 size_t stacksize = 100000;
741 ThreadData* td = new ThreadData (this, func, stacksize);
743 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
744 &thread_id, coreaudio_process_thread, td)) {
745 pthread_attr_init (&attr);
746 pthread_attr_setstacksize (&attr, stacksize);
747 if (pthread_create (&thread_id, &attr, coreaudio_process_thread, td)) {
748 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
749 pthread_attr_destroy (&attr);
752 pthread_attr_destroy (&attr);
755 _threads.push_back (thread_id);
760 CoreAudioBackend::join_process_threads ()
764 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
767 if (pthread_join (*i, &status)) {
768 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
777 CoreAudioBackend::in_process_thread ()
779 if (pthread_equal (_main_thread, pthread_self()) != 0) {
783 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
785 if (pthread_equal (*i, pthread_self ()) != 0) {
793 CoreAudioBackend::process_thread_count ()
795 return _threads.size ();
799 CoreAudioBackend::update_latencies ()
801 // trigger latency callback in RT thread (locked graph)
802 port_connect_add_remove_callback();
808 CoreAudioBackend::private_handle () const
814 CoreAudioBackend::my_name () const
816 return _instance_name;
820 CoreAudioBackend::available () const
822 return _run && _active_fw && _active_ca;
826 CoreAudioBackend::port_name_size () const
832 CoreAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
834 if (!valid_port (port)) {
835 PBD::error << _("CoreAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
838 return static_cast<CoreBackendPort*>(port)->set_name (_instance_name + ":" + name);
842 CoreAudioBackend::get_port_name (PortEngine::PortHandle port) const
844 if (!valid_port (port)) {
845 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
846 return std::string ();
848 return static_cast<CoreBackendPort*>(port)->name ();
852 CoreAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const
854 if (!valid_port (port)) {
855 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
858 if (key == "http://jackaudio.org/metadata/pretty-name") {
860 value = static_cast<CoreBackendPort*>(port)->pretty_name ();
861 if (!value.empty()) {
868 PortEngine::PortHandle
869 CoreAudioBackend::get_port_by_name (const std::string& name) const
871 PortHandle port = (PortHandle) find_port (name);
876 CoreAudioBackend::get_ports (
877 const std::string& port_name_pattern,
878 DataType type, PortFlags flags,
879 std::vector<std::string>& port_names) const
883 bool use_regexp = false;
884 if (port_name_pattern.size () > 0) {
885 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
889 for (size_t i = 0; i < _ports.size (); ++i) {
890 CoreBackendPort* port = _ports[i];
891 if ((port->type () == type) && flags == (port->flags () & flags)) {
892 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
893 port_names.push_back (port->name ());
899 regfree (&port_regex);
905 CoreAudioBackend::port_data_type (PortEngine::PortHandle port) const
907 if (!valid_port (port)) {
908 return DataType::NIL;
910 return static_cast<CoreBackendPort*>(port)->type ();
913 PortEngine::PortHandle
914 CoreAudioBackend::register_port (
915 const std::string& name,
916 ARDOUR::DataType type,
917 ARDOUR::PortFlags flags)
919 if (name.size () == 0) { return 0; }
920 if (flags & IsPhysical) { return 0; }
921 return add_port (_instance_name + ":" + name, type, flags);
924 PortEngine::PortHandle
925 CoreAudioBackend::add_port (
926 const std::string& name,
927 ARDOUR::DataType type,
928 ARDOUR::PortFlags flags)
930 assert(name.size ());
931 if (find_port (name)) {
932 PBD::error << _("CoreAudioBackend::register_port: Port already exists:")
933 << " (" << name << ")" << endmsg;
936 CoreBackendPort* port = NULL;
938 case DataType::AUDIO:
939 port = new CoreAudioPort (*this, name, flags);
942 port = new CoreMidiPort (*this, name, flags);
945 PBD::error << _("CoreAudioBackend::register_port: Invalid Data Type.") << endmsg;
949 _ports.push_back (port);
955 CoreAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
960 CoreBackendPort* port = static_cast<CoreBackendPort*>(port_handle);
961 std::vector<CoreBackendPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<CoreBackendPort*>(port_handle));
962 if (i == _ports.end ()) {
963 PBD::error << _("CoreAudioBackend::unregister_port: Failed to find port") << endmsg;
966 disconnect_all(port_handle);
972 CoreAudioBackend::register_system_audio_ports()
976 const uint32_t a_ins = _n_inputs;
977 const uint32_t a_out = _n_outputs;
979 const uint32_t coreaudio_reported_input_latency = _pcmio->get_latency(name_to_id(_input_audio_device), true);
980 const uint32_t coreaudio_reported_output_latency = _pcmio->get_latency(name_to_id(_output_audio_device), false);
983 printf("COREAUDIO LATENCY: i:%d, o:%d\n",
984 coreaudio_reported_input_latency,
985 coreaudio_reported_output_latency);
989 lr.min = lr.max = coreaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
990 for (uint32_t i = 0; i < a_ins; ++i) {
992 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
993 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
995 set_latency_range (p, false, lr);
996 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
997 cp->set_pretty_name (_pcmio->cached_port_name(i, true));
998 _system_inputs.push_back(cp);
1001 lr.min = lr.max = coreaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
1002 for (uint32_t i = 0; i < a_out; ++i) {
1004 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
1005 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1007 set_latency_range (p, true, lr);
1008 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
1009 cp->set_pretty_name (_pcmio->cached_port_name(i, false));
1010 _system_outputs.push_back(cp);
1016 CoreAudioBackend::coremidi_rediscover()
1018 if (!_run) { return; }
1019 assert(_midi_driver_option == _("CoreMidi"));
1021 pthread_mutex_lock (&_process_callback_mutex);
1023 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) {
1025 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
1026 if ((*it)->name() == _midiio->port_id(i, false)) {
1035 printf("unregister MIDI Output: %s\n", (*it)->name().c_str());
1037 _port_change_flag = true;
1038 unregister_port((*it));
1039 it = _system_midi_out.erase(it);
1043 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) {
1045 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
1046 if ((*it)->name() == _midiio->port_id(i, true)) {
1055 printf("unregister MIDI Input: %s\n", (*it)->name().c_str());
1057 _port_change_flag = true;
1058 unregister_port((*it));
1059 it = _system_midi_in.erase(it);
1063 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
1064 std::string name = _midiio->port_id(i, true);
1065 if (find_port_in(_system_midi_in, name)) {
1070 printf("register MIDI Input: %s\n", name.c_str());
1072 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1074 fprintf(stderr, "failed to register MIDI IN: %s\n", name.c_str());
1078 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1079 set_latency_range (p, false, lr);
1080 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
1081 pp->set_pretty_name(_midiio->port_name(i, true));
1082 _system_midi_in.push_back(pp);
1083 _port_change_flag = true;
1086 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
1087 std::string name = _midiio->port_id(i, false);
1088 if (find_port_in(_system_midi_out, name)) {
1093 printf("register MIDI OUT: %s\n", name.c_str());
1095 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1097 fprintf(stderr, "failed to register MIDI OUT: %s\n", name.c_str());
1101 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1102 set_latency_range (p, false, lr);
1103 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
1104 pp->set_pretty_name(_midiio->port_name(i, false));
1105 _system_midi_out.push_back(pp);
1106 _port_change_flag = true;
1110 assert(_system_midi_out.size() == _midiio->n_midi_outputs());
1111 assert(_system_midi_in.size() == _midiio->n_midi_inputs());
1113 pthread_mutex_unlock (&_process_callback_mutex);
1117 CoreAudioBackend::unregister_ports (bool system_only)
1120 _system_inputs.clear();
1121 _system_outputs.clear();
1122 _system_midi_in.clear();
1123 _system_midi_out.clear();
1124 while (i < _ports.size ()) {
1125 CoreBackendPort* port = _ports[i];
1126 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1127 port->disconnect_all ();
1129 _ports.erase (_ports.begin() + i);
1137 CoreAudioBackend::connect (const std::string& src, const std::string& dst)
1139 CoreBackendPort* src_port = find_port (src);
1140 CoreBackendPort* dst_port = find_port (dst);
1143 PBD::error << _("CoreAudioBackend::connect: Invalid Source port:")
1144 << " (" << src <<")" << endmsg;
1148 PBD::error << _("CoreAudioBackend::connect: Invalid Destination port:")
1149 << " (" << dst <<")" << endmsg;
1152 return src_port->connect (dst_port);
1156 CoreAudioBackend::disconnect (const std::string& src, const std::string& dst)
1158 CoreBackendPort* src_port = find_port (src);
1159 CoreBackendPort* dst_port = find_port (dst);
1161 if (!src_port || !dst_port) {
1162 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1165 return src_port->disconnect (dst_port);
1169 CoreAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1171 CoreBackendPort* dst_port = find_port (dst);
1172 if (!valid_port (src)) {
1173 PBD::error << _("CoreAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1177 PBD::error << _("CoreAudioBackend::connect: Invalid Destination Port")
1178 << " (" << dst << ")" << endmsg;
1181 return static_cast<CoreBackendPort*>(src)->connect (dst_port);
1185 CoreAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1187 CoreBackendPort* dst_port = find_port (dst);
1188 if (!valid_port (src) || !dst_port) {
1189 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1192 return static_cast<CoreBackendPort*>(src)->disconnect (dst_port);
1196 CoreAudioBackend::disconnect_all (PortEngine::PortHandle port)
1198 if (!valid_port (port)) {
1199 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1202 static_cast<CoreBackendPort*>(port)->disconnect_all ();
1207 CoreAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1209 if (!valid_port (port)) {
1210 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1213 return static_cast<CoreBackendPort*>(port)->is_connected ();
1217 CoreAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1219 CoreBackendPort* dst_port = find_port (dst);
1220 if (!valid_port (src) || !dst_port) {
1221 PBD::error << _("CoreAudioBackend::connected_to: Invalid Port") << endmsg;
1224 return static_cast<CoreBackendPort*>(src)->is_connected (dst_port);
1228 CoreAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1230 if (!valid_port (port)) {
1231 PBD::error << _("CoreAudioBackend::physically_connected: Invalid Port") << endmsg;
1234 return static_cast<CoreBackendPort*>(port)->is_physically_connected ();
1238 CoreAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1240 if (!valid_port (port)) {
1241 PBD::error << _("CoreAudioBackend::get_connections: Invalid Port") << endmsg;
1245 assert (0 == names.size ());
1247 const std::vector<CoreBackendPort*>& connected_ports = static_cast<CoreBackendPort*>(port)->get_connections ();
1249 for (std::vector<CoreBackendPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1250 names.push_back ((*i)->name ());
1253 return (int)names.size ();
1258 CoreAudioBackend::midi_event_get (
1259 pframes_t& timestamp,
1260 size_t& size, uint8_t** buf, void* port_buffer,
1261 uint32_t event_index)
1263 if (!buf || !port_buffer) return -1;
1264 CoreMidiBuffer& source = * static_cast<CoreMidiBuffer*>(port_buffer);
1265 if (event_index >= source.size ()) {
1268 CoreMidiEvent * const event = source[event_index].get ();
1270 timestamp = event->timestamp ();
1271 size = event->size ();
1272 *buf = event->data ();
1277 CoreAudioBackend::midi_event_put (
1279 pframes_t timestamp,
1280 const uint8_t* buffer, size_t size)
1282 if (!buffer || !port_buffer) return -1;
1283 CoreMidiBuffer& dst = * static_cast<CoreMidiBuffer*>(port_buffer);
1284 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1286 // nevermind, ::get_buffer() sorts events
1287 fprintf (stderr, "CoreMidiBuffer: unordered event: %d > %d\n",
1288 (pframes_t)dst.back ()->timestamp (), timestamp);
1291 dst.push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (timestamp, buffer, size)));
1296 CoreAudioBackend::get_midi_event_count (void* port_buffer)
1298 if (!port_buffer) return 0;
1299 return static_cast<CoreMidiBuffer*>(port_buffer)->size ();
1303 CoreAudioBackend::midi_clear (void* port_buffer)
1305 if (!port_buffer) return;
1306 CoreMidiBuffer * buf = static_cast<CoreMidiBuffer*>(port_buffer);
1314 CoreAudioBackend::can_monitor_input () const
1320 CoreAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1326 CoreAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1332 CoreAudioBackend::monitoring_input (PortEngine::PortHandle)
1337 /* Latency management */
1340 CoreAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1342 if (!valid_port (port)) {
1343 PBD::error << _("CoreBackendPort::set_latency_range (): invalid port.") << endmsg;
1345 static_cast<CoreBackendPort*>(port)->set_latency_range (latency_range, for_playback);
1349 CoreAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1352 if (!valid_port (port)) {
1353 PBD::error << _("CoreBackendPort::get_latency_range (): invalid port.") << endmsg;
1358 CoreBackendPort* p = static_cast<CoreBackendPort*>(port);
1361 r = p->latency_range (for_playback);
1362 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1363 if (p->is_input() && for_playback) {
1364 r.min += _samples_per_period;
1365 r.max += _samples_per_period;
1367 if (p->is_output() && !for_playback) {
1368 r.min += _samples_per_period;
1369 r.max += _samples_per_period;
1375 /* Discovering physical ports */
1378 CoreAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1380 if (!valid_port (port)) {
1381 PBD::error << _("CoreBackendPort::port_is_physical (): invalid port.") << endmsg;
1384 return static_cast<CoreBackendPort*>(port)->is_physical ();
1388 CoreAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1390 for (size_t i = 0; i < _ports.size (); ++i) {
1391 CoreBackendPort* port = _ports[i];
1392 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1393 port_names.push_back (port->name ());
1399 CoreAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1401 for (size_t i = 0; i < _ports.size (); ++i) {
1402 CoreBackendPort* port = _ports[i];
1403 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1404 port_names.push_back (port->name ());
1410 CoreAudioBackend::n_physical_outputs () const
1414 for (size_t i = 0; i < _ports.size (); ++i) {
1415 CoreBackendPort* port = _ports[i];
1416 if (port->is_output () && port->is_physical ()) {
1417 switch (port->type ()) {
1418 case DataType::AUDIO: ++n_audio; break;
1419 case DataType::MIDI: ++n_midi; break;
1425 cc.set (DataType::AUDIO, n_audio);
1426 cc.set (DataType::MIDI, n_midi);
1431 CoreAudioBackend::n_physical_inputs () const
1435 for (size_t i = 0; i < _ports.size (); ++i) {
1436 CoreBackendPort* port = _ports[i];
1437 if (port->is_input () && port->is_physical ()) {
1438 switch (port->type ()) {
1439 case DataType::AUDIO: ++n_audio; break;
1440 case DataType::MIDI: ++n_midi; break;
1446 cc.set (DataType::AUDIO, n_audio);
1447 cc.set (DataType::MIDI, n_midi);
1451 /* Getting access to the data buffer for a port */
1454 CoreAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1456 if (!port || !valid_port (port)) return NULL;
1457 return static_cast<CoreBackendPort*>(port)->get_buffer (nframes);
1461 CoreAudioBackend::pre_process ()
1463 bool connections_changed = false;
1464 bool ports_changed = false;
1465 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1466 if (_port_change_flag) {
1467 ports_changed = true;
1468 _port_change_flag = false;
1470 if (!_port_connection_queue.empty ()) {
1471 connections_changed = true;
1473 while (!_port_connection_queue.empty ()) {
1474 PortConnectData *c = _port_connection_queue.back ();
1475 manager.connect_callback (c->a, c->b, c->c);
1476 _port_connection_queue.pop_back ();
1479 pthread_mutex_unlock (&_port_callback_mutex);
1481 if (ports_changed) {
1482 manager.registration_callback();
1484 if (connections_changed) {
1485 manager.graph_order_callback();
1487 if (connections_changed || ports_changed) {
1488 engine.latency_callback(false);
1489 engine.latency_callback(true);
1494 CoreAudioBackend::freewheel_thread ()
1497 bool first_run = false;
1498 /* Freewheeling - use for export. The first call to
1499 * engine.process_callback() after engine.freewheel_callback will
1500 * if the first export cycle.
1501 * For reliable precise export timing, the calls need to be in sync.
1503 * Furthermore we need to make sure the registered process thread
1506 * _freewheeling = GUI thread state as set by ::freewheel()
1507 * _freewheel = in sync here (export thread)
1509 pthread_mutex_lock (&_freewheel_mutex);
1511 // check if we should run,
1512 if (_freewheeling != _freewheel) {
1513 if (!_freewheeling) {
1514 // prepare leaving freewheeling mode
1515 _freewheel = false; // first mark as disabled
1516 _reinit_thread_callback = true; // hand over _main_thread
1517 _freewheel_ack = false; // prepare next handshake
1518 _midiio->set_enabled(true);
1525 if (!_freewheel || !_freewheel_ack) {
1526 // wait for a change, we use a timed wait to
1527 // terminate early in case some error sets _run = 0
1530 gettimeofday (&tv, NULL);
1531 ts.tv_sec = tv.tv_sec + 3;
1533 pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts);
1538 // tell the engine we're ready to GO.
1539 engine.freewheel_callback (_freewheeling);
1541 _main_thread = pthread_self();
1542 AudioEngine::thread_init_callback (this);
1543 _midiio->set_enabled(false);
1546 // process port updates first in every cycle.
1549 // prevent coreaudio device changes
1550 pthread_mutex_lock (&_process_callback_mutex);
1554 // clear input buffers
1555 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1556 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1558 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
1559 static_cast<CoreMidiBuffer*>((*it)->get_buffer(0))->clear ();
1562 _last_process_start = 0;
1563 if (engine.process_callback (_samples_per_period)) {
1564 pthread_mutex_unlock (&_process_callback_mutex);
1568 pthread_mutex_unlock (&_process_callback_mutex);
1570 Glib::usleep (100); // don't hog cpu
1573 pthread_mutex_unlock (&_freewheel_mutex);
1578 // engine.process_callback() returner error
1579 engine.halted_callback("CoreAudio Freehweeling aborted.");
1584 #ifdef USE_MIDI_PARSER
1586 CoreAudioBackend::midi_process_byte (const uint8_t byte)
1594 midi_prepare_byte_event (byte);
1599 if (_status_byte == 0xf0) {
1600 midi_record_byte (byte);
1601 return midi_prepare_buffered_event ();
1604 _unbuffered_bytes = 0;
1605 _expected_bytes = 0;
1610 // Non-realtime status byte
1613 _unbuffered_bytes = 0;
1615 _status_byte = byte;
1616 switch (byte & 0xf0) {
1622 // Note On, Note Off, Aftertouch, Control Change, Pitch Wheel
1623 _expected_bytes = 3;
1627 // Program Change, Channel Pressure
1628 _expected_bytes = 2;
1634 _expected_bytes = 0;
1638 // MTC Quarter Frame, Song Select
1639 _expected_bytes = 2;
1643 _expected_bytes = 3;
1648 _expected_bytes = 0;
1653 midi_prepare_byte_event (byte);
1654 _expected_bytes = 0;
1659 midi_record_byte (byte);
1663 if (! _status_byte) {
1664 // Data bytes without a status will be discarded.
1666 _unbuffered_bytes++;
1669 if (! _total_bytes) {
1670 midi_record_byte (_status_byte);
1672 midi_record_byte(byte);
1673 return (_total_bytes == _expected_bytes) ? midi_prepare_buffered_event() : false;
1679 CoreAudioBackend::process_callback (const uint32_t n_samples, const uint64_t host_time)
1682 uint64_t clock1, clock2;
1686 if (_run && _freewheel && !_freewheel_ack) {
1687 // acknowledge freewheeling; hand-over thread ID
1688 pthread_mutex_lock (&_freewheel_mutex);
1689 if (_freewheel) _freewheel_ack = true;
1690 pthread_cond_signal (&_freewheel_signal);
1691 pthread_mutex_unlock (&_freewheel_mutex);
1694 if (!_run || _freewheel || _preinit) {
1695 // NB if we return 1, the output is
1696 // zeroed by the coreaudio callback
1700 if (_reinit_thread_callback || _main_thread != pthread_self()) {
1701 _reinit_thread_callback = false;
1702 _main_thread = pthread_self();
1703 AudioEngine::thread_init_callback (this);
1706 if (pthread_mutex_trylock (&_process_callback_mutex)) {
1707 // block while devices are added/removed
1709 printf("Xrun due to device change\n");
1714 /* port-connection change */
1717 // cycle-length in usec
1718 const double nominal_time = 1e6 * n_samples / _samplerate;
1720 clock1 = g_get_monotonic_time();
1724 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1725 CoreMidiBuffer* mbuf = static_cast<CoreMidiBuffer*>((*it)->get_buffer(0));
1728 uint8_t data[128]; // matches CoreMidi's MIDIPacket
1729 size_t size = sizeof(data);
1730 while (_midiio->recv_event (i, nominal_time, time_ns, data, size)) {
1731 pframes_t time = floor((float) time_ns * _samplerate * 1e-9);
1732 assert (time < n_samples);
1733 #ifndef USE_MIDI_PARSER
1734 midi_event_put((void*)mbuf, time, data, size);
1736 assert (size < 128);// coremidi limit per packet
1737 bool first_time = true; // this would need to be rememberd per port.
1738 for (size_t mb = 0; mb < size; ++mb) {
1739 if (first_time && !(data[mb] & 0x80)) {
1740 /* expect a status byte at the beginning or every Packet.
1742 * This parser drops messages spanning multiple packets
1743 * (sysex > 127 bytes).
1744 * see also libs/backends/alsa/alsa_rawmidi.cc
1745 * which implements a complete parser per port without this limit.
1751 if (midi_process_byte (data[mb])) {
1752 midi_event_put ((void*)mbuf, time, _parser_buffer, _parser_bytes);
1756 size = sizeof(data);
1762 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1763 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(n_samples)), n_samples);
1766 /* clear output buffers */
1767 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1768 memset ((*it)->get_buffer (n_samples), 0, n_samples * sizeof (Sample));
1771 _midiio->start_cycle();
1772 _last_process_start = host_time;
1774 if (engine.process_callback (n_samples)) {
1775 fprintf(stderr, "ENGINE PROCESS ERROR\n");
1776 //_pcmio->pcm_stop ();
1778 pthread_mutex_unlock (&_process_callback_mutex);
1783 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1784 static_cast<CoreMidiPort*>(*it)->get_buffer(0);
1787 /* queue outgoing midi */
1789 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1790 #if 0 // something's still b0rked with CoreMidiIo::send_events()
1791 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1792 _midiio->send_events (i, nominal_time, (void*)src);
1794 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1795 for (CoreMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1796 _midiio->send_event (i, (*mit)->timestamp() / nominal_time, (*mit)->data(), (*mit)->size());
1801 /* write back audio */
1803 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1804 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (n_samples), n_samples);
1807 _processed_samples += n_samples;
1809 /* calc DSP load. */
1810 clock2 = g_get_monotonic_time();
1811 const int64_t elapsed_time = clock2 - clock1;
1813 const float load = elapsed_time / (float) nominal_time;
1814 if (load > _dsp_load) {
1817 const float a = .2 * _samples_per_period / _samplerate;
1818 _dsp_load = _dsp_load + a * (load - _dsp_load) + 1e-12;
1821 pthread_mutex_unlock (&_process_callback_mutex);
1826 CoreAudioBackend::error_callback ()
1828 _pcmio->set_error_callback (NULL, NULL);
1829 _pcmio->set_sample_rate_callback (NULL, NULL);
1830 _pcmio->set_xrun_callback (NULL, NULL);
1831 _midiio->set_port_changed_callback(NULL, NULL);
1832 engine.halted_callback("CoreAudio Process aborted.");
1837 CoreAudioBackend::xrun_callback ()
1843 CoreAudioBackend::buffer_size_callback ()
1845 uint32_t bs = _pcmio->samples_per_period();
1846 if (bs == _samples_per_period) {
1849 _samples_per_period = bs;
1850 engine.buffer_size_change (_samples_per_period);
1854 CoreAudioBackend::sample_rate_callback ()
1858 printf("Samplerate change during initialization.\n");
1862 _pcmio->set_error_callback (NULL, NULL);
1863 _pcmio->set_sample_rate_callback (NULL, NULL);
1864 _pcmio->set_xrun_callback (NULL, NULL);
1865 _midiio->set_port_changed_callback(NULL, NULL);
1866 engine.halted_callback("Sample Rate Changed.");
1871 CoreAudioBackend::hw_changed_callback ()
1873 _reinit_thread_callback = true;
1874 engine.request_device_list_update();
1877 /******************************************************************************/
1879 static boost::shared_ptr<CoreAudioBackend> _instance;
1881 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1882 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1883 static int deinstantiate ();
1884 static bool already_configured ();
1885 static bool available ();
1887 static ARDOUR::AudioBackendInfo _descriptor = {
1896 static boost::shared_ptr<AudioBackend>
1897 backend_factory (AudioEngine& e)
1900 _instance.reset (new CoreAudioBackend (e, _descriptor));
1906 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1908 s_instance_name = arg1;
1920 already_configured ()
1931 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1933 return &_descriptor;
1937 /******************************************************************************/
1938 CoreBackendPort::CoreBackendPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1943 _capture_latency_range.min = 0;
1944 _capture_latency_range.max = 0;
1945 _playback_latency_range.min = 0;
1946 _playback_latency_range.max = 0;
1949 CoreBackendPort::~CoreBackendPort () {
1954 int CoreBackendPort::connect (CoreBackendPort *port)
1957 PBD::error << _("CoreBackendPort::connect (): invalid (null) port") << endmsg;
1961 if (type () != port->type ()) {
1962 PBD::error << _("CoreBackendPort::connect (): wrong port-type") << endmsg;
1966 if (is_output () && port->is_output ()) {
1967 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect output ports.") << endmsg;
1971 if (is_input () && port->is_input ()) {
1972 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect input ports.") << endmsg;
1977 PBD::error << _("CoreBackendPort::connect (): cannot self-connect ports.") << endmsg;
1981 if (is_connected (port)) {
1982 #if 0 // don't bother to warn about this for now. just ignore it
1983 PBD::error << _("CoreBackendPort::connect (): ports are already connected:")
1984 << " (" << name () << ") -> (" << port->name () << ")"
1990 _connect (port, true);
1995 void CoreBackendPort::_connect (CoreBackendPort *port, bool callback)
1997 _connections.push_back (port);
1999 port->_connect (this, false);
2000 _osx_backend.port_connect_callback (name(), port->name(), true);
2004 int CoreBackendPort::disconnect (CoreBackendPort *port)
2007 PBD::error << _("CoreBackendPort::disconnect (): invalid (null) port") << endmsg;
2011 if (!is_connected (port)) {
2012 PBD::error << _("CoreBackendPort::disconnect (): ports are not connected:")
2013 << " (" << name () << ") -> (" << port->name () << ")"
2017 _disconnect (port, true);
2021 void CoreBackendPort::_disconnect (CoreBackendPort *port, bool callback)
2023 std::vector<CoreBackendPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
2025 assert (it != _connections.end ());
2027 _connections.erase (it);
2030 port->_disconnect (this, false);
2031 _osx_backend.port_connect_callback (name(), port->name(), false);
2036 void CoreBackendPort::disconnect_all ()
2038 while (!_connections.empty ()) {
2039 _connections.back ()->_disconnect (this, false);
2040 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
2041 _connections.pop_back ();
2046 CoreBackendPort::is_connected (const CoreBackendPort *port) const
2048 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
2051 bool CoreBackendPort::is_physically_connected () const
2053 for (std::vector<CoreBackendPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
2054 if ((*it)->is_physical ()) {
2061 /******************************************************************************/
2063 CoreAudioPort::CoreAudioPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
2064 : CoreBackendPort (b, name, flags)
2066 memset (_buffer, 0, sizeof (_buffer));
2067 mlock(_buffer, sizeof (_buffer));
2070 CoreAudioPort::~CoreAudioPort () { }
2072 void* CoreAudioPort::get_buffer (pframes_t n_samples)
2075 std::vector<CoreBackendPort*>::const_iterator it = get_connections ().begin ();
2076 if (it == get_connections ().end ()) {
2077 memset (_buffer, 0, n_samples * sizeof (Sample));
2079 CoreAudioPort const * source = static_cast<const CoreAudioPort*>(*it);
2080 assert (source && source->is_output ());
2081 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
2082 while (++it != get_connections ().end ()) {
2083 source = static_cast<const CoreAudioPort*>(*it);
2084 assert (source && source->is_output ());
2085 Sample* dst = buffer ();
2086 const Sample* src = source->const_buffer ();
2087 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
2097 CoreMidiPort::CoreMidiPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
2098 : CoreBackendPort (b, name, flags)
2102 _buffer[0].clear ();
2103 _buffer[1].clear ();
2106 CoreMidiPort::~CoreMidiPort () { }
2108 struct MidiEventSorter {
2109 bool operator() (const boost::shared_ptr<CoreMidiEvent>& a, const boost::shared_ptr<CoreMidiEvent>& b) {
2114 void* CoreMidiPort::get_buffer (pframes_t /* nframes */)
2117 (_buffer[_bufperiod]).clear ();
2118 for (std::vector<CoreBackendPort*>::const_iterator i = get_connections ().begin ();
2119 i != get_connections ().end ();
2121 const CoreMidiBuffer * src = static_cast<const CoreMidiPort*>(*i)->const_buffer ();
2122 for (CoreMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
2123 (_buffer[_bufperiod]).push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (**it)));
2126 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
2128 return &(_buffer[_bufperiod]);
2131 CoreMidiEvent::CoreMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
2133 , _timestamp (timestamp)
2137 _data = (uint8_t*) malloc (size);
2138 memcpy (_data, data, size);
2142 CoreMidiEvent::CoreMidiEvent (const CoreMidiEvent& other)
2143 : _size (other.size ())
2144 , _timestamp (other.timestamp ())
2147 if (other.size () && other.const_data ()) {
2148 _data = (uint8_t*) malloc (other.size ());
2149 memcpy (_data, other.const_data (), other.size ());
2153 CoreMidiEvent::~CoreMidiEvent () {