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)
94 , _midi_driver_option(_("None"))
96 , _samples_per_period (1024)
99 , _systemic_audio_input_latency (0)
100 , _systemic_audio_output_latency (0)
102 , _processed_samples (0)
103 , _port_change_flag (false)
105 _instance_name = s_instance_name;
106 pthread_mutex_init (&_port_callback_mutex, 0);
107 pthread_mutex_init (&_process_callback_mutex, 0);
108 pthread_mutex_init (&_freewheel_mutex, 0);
109 pthread_cond_init (&_freewheel_signal, 0);
111 _pcmio = new CoreAudioPCM ();
112 _midiio = new CoreMidiIo ();
114 _pcmio->set_hw_changed_callback (hw_changed_callback_ptr, this);
118 CoreAudioBackend::~CoreAudioBackend ()
120 delete _pcmio; _pcmio = 0;
121 delete _midiio; _midiio = 0;
122 pthread_mutex_destroy (&_port_callback_mutex);
123 pthread_mutex_destroy (&_process_callback_mutex);
124 pthread_mutex_destroy (&_freewheel_mutex);
125 pthread_cond_destroy (&_freewheel_signal);
128 /* AUDIOBACKEND API */
131 CoreAudioBackend::name () const
133 return X_("CoreAudio");
137 CoreAudioBackend::is_realtime () const
142 std::vector<AudioBackend::DeviceStatus>
143 CoreAudioBackend::enumerate_devices () const
145 _audio_device_status.clear();
146 std::map<size_t, std::string> devices;
147 _pcmio->device_list(devices);
149 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
150 if (_audio_device == "") _audio_device = i->second;
151 _audio_device_status.push_back (DeviceStatus (i->second, true));
153 return _audio_device_status;
157 CoreAudioBackend::available_sample_rates (const std::string&) const
159 std::vector<float> sr;
160 _pcmio->available_sample_rates(name_to_id(_audio_device), sr);
164 std::vector<uint32_t>
165 CoreAudioBackend::available_buffer_sizes (const std::string&) const
167 std::vector<uint32_t> bs;
168 _pcmio->available_buffer_sizes(name_to_id(_audio_device), bs);
173 CoreAudioBackend::available_input_channel_count (const std::string&) const
175 return 128; // TODO query current device
179 CoreAudioBackend::available_output_channel_count (const std::string&) const
181 return 128; // TODO query current device
185 CoreAudioBackend::can_change_sample_rate_when_running () const
191 CoreAudioBackend::can_change_buffer_size_when_running () const
197 CoreAudioBackend::set_device_name (const std::string& d)
200 const float sr = _pcmio->current_sample_rate(name_to_id(_audio_device));
201 if (sr > 0) { set_sample_rate(sr); }
206 CoreAudioBackend::set_sample_rate (float sr)
208 if (sr <= 0) { return -1; }
209 // TODO check if it's in the list of valid SR
211 engine.sample_rate_change (sr);
216 CoreAudioBackend::set_buffer_size (uint32_t bs)
218 if (bs <= 0 || bs >= _max_buffer_size) {
221 _samples_per_period = bs;
222 _pcmio->set_samples_per_period(bs);
223 engine.buffer_size_change (bs);
228 CoreAudioBackend::set_interleaved (bool yn)
230 if (!yn) { return 0; }
235 CoreAudioBackend::set_input_channels (uint32_t cc)
242 CoreAudioBackend::set_output_channels (uint32_t cc)
249 CoreAudioBackend::set_systemic_input_latency (uint32_t sl)
251 _systemic_audio_input_latency = sl;
256 CoreAudioBackend::set_systemic_output_latency (uint32_t sl)
258 _systemic_audio_output_latency = sl;
263 CoreAudioBackend::set_systemic_midi_input_latency (std::string const device, uint32_t sl)
265 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
267 nfo->systemic_input_latency = sl;
272 CoreAudioBackend::set_systemic_midi_output_latency (std::string const device, uint32_t sl)
274 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
276 nfo->systemic_output_latency = sl;
280 /* Retrieving parameters */
282 CoreAudioBackend::device_name () const
284 return _audio_device;
288 CoreAudioBackend::sample_rate () const
294 CoreAudioBackend::buffer_size () const
296 return _samples_per_period;
300 CoreAudioBackend::interleaved () const
306 CoreAudioBackend::input_channels () const
312 CoreAudioBackend::output_channels () const
318 CoreAudioBackend::systemic_input_latency () const
320 return _systemic_audio_input_latency;
324 CoreAudioBackend::systemic_output_latency () const
326 return _systemic_audio_output_latency;
330 CoreAudioBackend::systemic_midi_input_latency (std::string const device) const
332 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
334 return nfo->systemic_input_latency;
338 CoreAudioBackend::systemic_midi_output_latency (std::string const device) const
340 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
342 return nfo->systemic_output_latency;
346 struct CoreAudioBackend::CoreMidiDeviceInfo *
347 CoreAudioBackend::midi_device_info(std::string const name) const {
351 std::vector<std::string>
352 CoreAudioBackend::enumerate_midi_options () const
354 if (_midi_options.empty()) {
355 _midi_options.push_back (_("CoreMidi"));
356 _midi_options.push_back (_("None"));
358 return _midi_options;
361 std::vector<AudioBackend::DeviceStatus>
362 CoreAudioBackend::enumerate_midi_devices () const
364 _midi_device_status.clear();
365 std::map<std::string, std::string> devices;
366 //_midi_device_status.push_back (DeviceStatus (_("CoreMidi"), true));
367 return _midi_device_status;
371 CoreAudioBackend::set_midi_option (const std::string& opt)
373 if (opt != _("None") && opt != _("CoreMidi")) {
376 _midi_driver_option = opt;
381 CoreAudioBackend::midi_option () const
383 return _midi_driver_option;
387 CoreAudioBackend::set_midi_device_enabled (std::string const device, bool enable)
389 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
391 nfo->enabled = enable;
396 CoreAudioBackend::midi_device_enabled (std::string const device) const
398 struct CoreMidiDeviceInfo * nfo = midi_device_info(device);
399 if (!nfo) return false;
404 CoreAudioBackend::launch_control_app ()
406 _pcmio->launch_control_app(name_to_id(_audio_device));
411 static void * pthread_freewheel (void *arg)
413 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
414 d->freewheel_thread ();
419 static int process_callback_ptr (void *arg)
421 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
422 return d->process_callback();
426 CoreAudioBackend::_start (bool for_latency_measurement)
428 if ((!_active_ca || !_active_fw) && _run) {
429 // recover from 'halted', reap threads
433 if (_active_ca || _active_fw || _run) {
434 PBD::error << _("CoreAudioBackend: already active.") << endmsg;
439 PBD::warning << _("CoreAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
440 _system_inputs.clear();
441 _system_outputs.clear();
442 _system_midi_in.clear();
443 _system_midi_out.clear();
447 uint32_t device1 = name_to_id(_audio_device); // usually input, but in an aggregate, 1st defines the clock
448 uint32_t device2 = name_to_id(_audio_device); // usually output
450 assert(_active_ca == false);
451 assert(_active_fw == false);
453 _freewheel_ack = false;
454 _reinit_thread_callback = true;
456 _pcmio->set_error_callback (error_callback_ptr, this);
457 _pcmio->set_buffer_size_callback (buffer_size_callback_ptr, this);
458 _pcmio->set_sample_rate_callback (sample_rate_callback_ptr, this);
460 _pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this);
462 switch (_pcmio->state ()) {
463 case 0: /* OK */ break;
464 case -1: PBD::error << _("CoreAudioBackend: failed to open device.") << endmsg; break;
465 default: PBD::error << _("CoreAudioBackend: initialization failed.") << endmsg; break;
467 if (_pcmio->state ()) {
471 if (_n_outputs != _pcmio->n_playback_channels ()) {
472 if (_n_outputs == 0) {
473 _n_outputs = _pcmio->n_playback_channels ();
475 _n_outputs = std::min (_n_outputs, _pcmio->n_playback_channels ());
477 PBD::info << _("CoreAudioBackend: adjusted output channel count to match device.") << endmsg;
480 if (_n_inputs != _pcmio->n_capture_channels ()) {
481 if (_n_inputs == 0) {
482 _n_inputs = _pcmio->n_capture_channels ();
484 _n_inputs = std::min (_n_inputs, _pcmio->n_capture_channels ());
486 PBD::info << _("CoreAudioBackend: adjusted input channel count to match device.") << endmsg;
489 if (_pcmio->samples_per_period() != _samples_per_period) {
490 _samples_per_period = _pcmio->samples_per_period();
491 PBD::warning << _("CoreAudioBackend: samples per period does not match.") << endmsg;
494 if (_pcmio->sample_rate() != _samplerate) {
495 _samplerate = _pcmio->sample_rate();
496 engine.sample_rate_change (_samplerate);
497 PBD::warning << _("CoreAudioBackend: sample rate does not match.") << endmsg;
500 _measure_latency = for_latency_measurement;
504 _port_change_flag = false;
506 if (_midi_driver_option == _("CoreMidi")) {
507 _midiio->set_enabled(true);
508 _midiio->set_port_changed_callback(midi_port_change, this);
509 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
512 if (register_system_audio_ports()) {
513 PBD::error << _("CoreAudioBackend: failed to register system ports.") << endmsg;
518 engine.sample_rate_change (_samplerate);
519 engine.buffer_size_change (_samples_per_period);
521 if (engine.reestablish_ports ()) {
522 PBD::error << _("CoreAudioBackend: Could not re-establish ports.") << endmsg;
527 if (pthread_create (&_freeewheel_thread, NULL, pthread_freewheel, this))
529 PBD::error << _("CoreAudioBackend: failed to create process thread.") << endmsg;
530 delete _pcmio; _pcmio = 0;
536 while ((!_active_ca || !_active_fw) && --timeout > 0) { Glib::usleep (1000); }
539 PBD::error << _("CoreAudioBackend: failed to start.") << endmsg;
543 PBD::error << _("CoreAudioBackend: failed to start freewheeling thread.") << endmsg;
553 PBD::error << _("CoreAudioBackend: failed to start coreaudio.") << endmsg;
559 engine.reconnect_ports ();
561 // force an initial registration_callback() & latency re-compute
562 _port_change_flag = true;
566 _pcmio->set_xrun_callback (xrun_callback_ptr, this);
573 CoreAudioBackend::stop ()
582 _midiio->set_port_changed_callback(NULL, NULL);
585 pthread_mutex_lock (&_freewheel_mutex);
586 pthread_cond_signal (&_freewheel_signal);
587 pthread_mutex_unlock (&_freewheel_mutex);
589 if (pthread_join (_freeewheel_thread, &status)) {
590 PBD::error << _("CoreAudioBackend: failed to terminate.") << endmsg;
597 _active_fw = false; // ??
603 CoreAudioBackend::freewheel (bool onoff)
605 if (onoff == _freewheeling) {
608 _freewheeling = onoff;
609 // wake up freewheeling thread
610 if (0 == pthread_mutex_trylock (&_freewheel_mutex)) {
611 pthread_cond_signal (&_freewheel_signal);
612 pthread_mutex_unlock (&_freewheel_mutex);
618 CoreAudioBackend::dsp_load () const
620 return 100.f * _dsp_load;
624 CoreAudioBackend::raw_buffer_size (DataType t)
627 case DataType::AUDIO:
628 return _samples_per_period * sizeof(Sample);
630 return _max_buffer_size; // XXX not really limited
637 CoreAudioBackend::sample_time ()
639 return _processed_samples;
643 CoreAudioBackend::sample_time_at_cycle_start ()
645 return _processed_samples;
649 CoreAudioBackend::samples_since_cycle_start ()
655 CoreAudioBackend::name_to_id(std::string device_name) const {
656 uint32_t device_id = UINT32_MAX;
657 std::map<size_t, std::string> devices;
658 _pcmio->device_list(devices);
660 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
661 if (i->second == device_name) {
662 device_id = i->first;
670 CoreAudioBackend::coreaudio_process_thread (void *arg)
672 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
673 boost::function<void ()> f = td->f;
680 CoreAudioBackend::create_process_thread (boost::function<void()> func)
684 size_t stacksize = 100000;
686 ThreadData* td = new ThreadData (this, func, stacksize);
688 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
689 &thread_id, coreaudio_process_thread, td)) {
690 pthread_attr_init (&attr);
691 pthread_attr_setstacksize (&attr, stacksize);
692 if (pthread_create (&thread_id, &attr, coreaudio_process_thread, td)) {
693 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
694 pthread_attr_destroy (&attr);
697 pthread_attr_destroy (&attr);
700 _threads.push_back (thread_id);
705 CoreAudioBackend::join_process_threads ()
709 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
712 if (pthread_join (*i, &status)) {
713 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
722 CoreAudioBackend::in_process_thread ()
724 if (pthread_equal (_main_thread, pthread_self()) != 0) {
728 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
730 if (pthread_equal (*i, pthread_self ()) != 0) {
738 CoreAudioBackend::process_thread_count ()
740 return _threads.size ();
744 CoreAudioBackend::update_latencies ()
746 // trigger latency callback in RT thread (locked graph)
747 port_connect_add_remove_callback();
753 CoreAudioBackend::private_handle () const
759 CoreAudioBackend::my_name () const
761 return _instance_name;
765 CoreAudioBackend::available () const
767 return _run && _active_fw && _active_ca;
771 CoreAudioBackend::port_name_size () const
777 CoreAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
779 if (!valid_port (port)) {
780 PBD::error << _("CoreAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
783 return static_cast<CoreBackendPort*>(port)->set_name (_instance_name + ":" + name);
787 CoreAudioBackend::get_port_name (PortEngine::PortHandle port) const
789 if (!valid_port (port)) {
790 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
791 return std::string ();
793 return static_cast<CoreBackendPort*>(port)->name ();
797 CoreAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const
799 if (!valid_port (port)) {
800 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
803 if (key == "http://jackaudio.org/metadata/pretty-name") {
805 value = static_cast<CoreBackendPort*>(port)->pretty_name ();
806 if (!value.empty()) {
813 PortEngine::PortHandle
814 CoreAudioBackend::get_port_by_name (const std::string& name) const
816 PortHandle port = (PortHandle) find_port (name);
821 CoreAudioBackend::get_ports (
822 const std::string& port_name_pattern,
823 DataType type, PortFlags flags,
824 std::vector<std::string>& port_names) const
828 bool use_regexp = false;
829 if (port_name_pattern.size () > 0) {
830 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
834 for (size_t i = 0; i < _ports.size (); ++i) {
835 CoreBackendPort* port = _ports[i];
836 if ((port->type () == type) && (port->flags () & flags)) {
837 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
838 port_names.push_back (port->name ());
844 regfree (&port_regex);
850 CoreAudioBackend::port_data_type (PortEngine::PortHandle port) const
852 if (!valid_port (port)) {
853 return DataType::NIL;
855 return static_cast<CoreBackendPort*>(port)->type ();
858 PortEngine::PortHandle
859 CoreAudioBackend::register_port (
860 const std::string& name,
861 ARDOUR::DataType type,
862 ARDOUR::PortFlags flags)
864 if (name.size () == 0) { return 0; }
865 if (flags & IsPhysical) { return 0; }
866 return add_port (_instance_name + ":" + name, type, flags);
869 PortEngine::PortHandle
870 CoreAudioBackend::add_port (
871 const std::string& name,
872 ARDOUR::DataType type,
873 ARDOUR::PortFlags flags)
875 assert(name.size ());
876 if (find_port (name)) {
877 PBD::error << _("CoreAudioBackend::register_port: Port already exists:")
878 << " (" << name << ")" << endmsg;
881 CoreBackendPort* port = NULL;
883 case DataType::AUDIO:
884 port = new CoreAudioPort (*this, name, flags);
887 port = new CoreMidiPort (*this, name, flags);
890 PBD::error << _("CoreAudioBackend::register_port: Invalid Data Type.") << endmsg;
894 _ports.push_back (port);
900 CoreAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
905 CoreBackendPort* port = static_cast<CoreBackendPort*>(port_handle);
906 std::vector<CoreBackendPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<CoreBackendPort*>(port_handle));
907 if (i == _ports.end ()) {
908 PBD::error << _("CoreAudioBackend::unregister_port: Failed to find port") << endmsg;
911 disconnect_all(port_handle);
917 CoreAudioBackend::register_system_audio_ports()
921 const uint32_t a_ins = _n_inputs;
922 const uint32_t a_out = _n_outputs;
924 const uint32_t coreaudio_reported_input_latency = _pcmio->get_latency(name_to_id(_audio_device), true);
925 const uint32_t coreaudio_reported_output_latency = _pcmio->get_latency(name_to_id(_audio_device), false);
928 printf("COREAUDIO LATENCY: i:%d, o:%d\n",
929 coreaudio_reported_input_latency,
930 coreaudio_reported_output_latency);
934 lr.min = lr.max = coreaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
935 for (uint32_t i = 0; i < a_ins; ++i) {
937 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
938 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
940 set_latency_range (p, false, lr);
941 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
942 cp->set_pretty_name (_pcmio->cached_port_name(i, true));
943 _system_inputs.push_back(cp);
946 lr.min = lr.max = coreaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
947 for (uint32_t i = 0; i < a_out; ++i) {
949 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
950 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
952 set_latency_range (p, true, lr);
953 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
954 cp->set_pretty_name (_pcmio->cached_port_name(i, false));
955 _system_outputs.push_back(cp);
961 CoreAudioBackend::coremidi_rediscover()
963 if (!_run) { return; }
964 assert(_midi_driver_option == _("CoreMidi"));
966 pthread_mutex_lock (&_process_callback_mutex);
968 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) {
970 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
971 if ((*it)->name() == _midiio->port_name(i, false)) {
980 printf("unregister MIDI Output: %s\n", (*it)->name().c_str());
982 _port_change_flag = true;
983 unregister_port((*it));
984 it = _system_midi_out.erase(it);
988 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) {
990 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
991 if ((*it)->name() == _midiio->port_name(i, true)) {
1000 printf("unregister MIDI Input: %s\n", (*it)->name().c_str());
1002 _port_change_flag = true;
1003 unregister_port((*it));
1004 it = _system_midi_in.erase(it);
1008 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
1009 std::string name = _midiio->port_name(i, true);
1010 if (find_port_in(_system_midi_in, name)) {
1015 printf("register MIDI Input: %s\n", name.c_str());
1017 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
1019 fprintf(stderr, "failed to register MIDI IN: %s\n", name.c_str());
1023 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1024 set_latency_range (p, false, lr);
1025 _system_midi_in.push_back(static_cast<CoreBackendPort*>(p));
1026 _port_change_flag = true;
1029 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
1030 std::string name = _midiio->port_name(i, false);
1031 if (find_port_in(_system_midi_out, name)) {
1036 printf("register MIDI OUT: %s\n", name.c_str());
1038 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
1040 fprintf(stderr, "failed to register MIDI OUT: %s\n", name.c_str());
1044 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
1045 set_latency_range (p, false, lr);
1046 _system_midi_out.push_back(static_cast<CoreBackendPort*>(p));
1047 _port_change_flag = true;
1051 assert(_system_midi_out.size() == _midiio->n_midi_outputs());
1052 assert(_system_midi_in.size() == _midiio->n_midi_inputs());
1054 pthread_mutex_unlock (&_process_callback_mutex);
1058 CoreAudioBackend::unregister_ports (bool system_only)
1061 _system_inputs.clear();
1062 _system_outputs.clear();
1063 _system_midi_in.clear();
1064 _system_midi_out.clear();
1065 while (i < _ports.size ()) {
1066 CoreBackendPort* port = _ports[i];
1067 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1068 port->disconnect_all ();
1070 _ports.erase (_ports.begin() + i);
1078 CoreAudioBackend::connect (const std::string& src, const std::string& dst)
1080 CoreBackendPort* src_port = find_port (src);
1081 CoreBackendPort* dst_port = find_port (dst);
1084 PBD::error << _("CoreAudioBackend::connect: Invalid Source port:")
1085 << " (" << src <<")" << endmsg;
1089 PBD::error << _("CoreAudioBackend::connect: Invalid Destination port:")
1090 << " (" << dst <<")" << endmsg;
1093 return src_port->connect (dst_port);
1097 CoreAudioBackend::disconnect (const std::string& src, const std::string& dst)
1099 CoreBackendPort* src_port = find_port (src);
1100 CoreBackendPort* dst_port = find_port (dst);
1102 if (!src_port || !dst_port) {
1103 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1106 return src_port->disconnect (dst_port);
1110 CoreAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1112 CoreBackendPort* dst_port = find_port (dst);
1113 if (!valid_port (src)) {
1114 PBD::error << _("CoreAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1118 PBD::error << _("CoreAudioBackend::connect: Invalid Destination Port")
1119 << " (" << dst << ")" << endmsg;
1122 return static_cast<CoreBackendPort*>(src)->connect (dst_port);
1126 CoreAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1128 CoreBackendPort* dst_port = find_port (dst);
1129 if (!valid_port (src) || !dst_port) {
1130 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1133 return static_cast<CoreBackendPort*>(src)->disconnect (dst_port);
1137 CoreAudioBackend::disconnect_all (PortEngine::PortHandle port)
1139 if (!valid_port (port)) {
1140 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1143 static_cast<CoreBackendPort*>(port)->disconnect_all ();
1148 CoreAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1150 if (!valid_port (port)) {
1151 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1154 return static_cast<CoreBackendPort*>(port)->is_connected ();
1158 CoreAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1160 CoreBackendPort* dst_port = find_port (dst);
1161 if (!valid_port (src) || !dst_port) {
1162 PBD::error << _("CoreAudioBackend::connected_to: Invalid Port") << endmsg;
1165 return static_cast<CoreBackendPort*>(src)->is_connected (dst_port);
1169 CoreAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1171 if (!valid_port (port)) {
1172 PBD::error << _("CoreAudioBackend::physically_connected: Invalid Port") << endmsg;
1175 return static_cast<CoreBackendPort*>(port)->is_physically_connected ();
1179 CoreAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1181 if (!valid_port (port)) {
1182 PBD::error << _("CoreAudioBackend::get_connections: Invalid Port") << endmsg;
1186 assert (0 == names.size ());
1188 const std::vector<CoreBackendPort*>& connected_ports = static_cast<CoreBackendPort*>(port)->get_connections ();
1190 for (std::vector<CoreBackendPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1191 names.push_back ((*i)->name ());
1194 return (int)names.size ();
1199 CoreAudioBackend::midi_event_get (
1200 pframes_t& timestamp,
1201 size_t& size, uint8_t** buf, void* port_buffer,
1202 uint32_t event_index)
1204 assert (buf && port_buffer);
1205 CoreMidiBuffer& source = * static_cast<CoreMidiBuffer*>(port_buffer);
1206 if (event_index >= source.size ()) {
1209 CoreMidiEvent * const event = source[event_index].get ();
1211 timestamp = event->timestamp ();
1212 size = event->size ();
1213 *buf = event->data ();
1218 CoreAudioBackend::midi_event_put (
1220 pframes_t timestamp,
1221 const uint8_t* buffer, size_t size)
1223 assert (buffer && port_buffer);
1224 CoreMidiBuffer& dst = * static_cast<CoreMidiBuffer*>(port_buffer);
1225 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1226 fprintf (stderr, "CoreMidiBuffer: it's too late for this event. %d > %d\n",
1227 (pframes_t)dst.back ()->timestamp (), timestamp);
1230 dst.push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (timestamp, buffer, size)));
1235 CoreAudioBackend::get_midi_event_count (void* port_buffer)
1237 assert (port_buffer);
1238 return static_cast<CoreMidiBuffer*>(port_buffer)->size ();
1242 CoreAudioBackend::midi_clear (void* port_buffer)
1244 assert (port_buffer);
1245 CoreMidiBuffer * buf = static_cast<CoreMidiBuffer*>(port_buffer);
1253 CoreAudioBackend::can_monitor_input () const
1259 CoreAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1265 CoreAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1271 CoreAudioBackend::monitoring_input (PortEngine::PortHandle)
1276 /* Latency management */
1279 CoreAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1281 if (!valid_port (port)) {
1282 PBD::error << _("CoreBackendPort::set_latency_range (): invalid port.") << endmsg;
1284 static_cast<CoreBackendPort*>(port)->set_latency_range (latency_range, for_playback);
1288 CoreAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1291 if (!valid_port (port)) {
1292 PBD::error << _("CoreBackendPort::get_latency_range (): invalid port.") << endmsg;
1296 CoreBackendPort* p = static_cast<CoreBackendPort*>(port);
1299 r = p->latency_range (for_playback);
1300 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1301 if (p->is_input() && for_playback) {
1302 r.min += _samples_per_period;
1303 r.max += _samples_per_period;
1305 if (p->is_output() && !for_playback) {
1306 r.min += _samples_per_period;
1307 r.max += _samples_per_period;
1313 /* Discovering physical ports */
1316 CoreAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1318 if (!valid_port (port)) {
1319 PBD::error << _("CoreBackendPort::port_is_physical (): invalid port.") << endmsg;
1322 return static_cast<CoreBackendPort*>(port)->is_physical ();
1326 CoreAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1328 for (size_t i = 0; i < _ports.size (); ++i) {
1329 CoreBackendPort* port = _ports[i];
1330 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1331 port_names.push_back (port->name ());
1337 CoreAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1339 for (size_t i = 0; i < _ports.size (); ++i) {
1340 CoreBackendPort* port = _ports[i];
1341 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1342 port_names.push_back (port->name ());
1348 CoreAudioBackend::n_physical_outputs () const
1352 for (size_t i = 0; i < _ports.size (); ++i) {
1353 CoreBackendPort* port = _ports[i];
1354 if (port->is_output () && port->is_physical ()) {
1355 switch (port->type ()) {
1356 case DataType::AUDIO: ++n_audio; break;
1357 case DataType::MIDI: ++n_midi; break;
1363 cc.set (DataType::AUDIO, n_audio);
1364 cc.set (DataType::MIDI, n_midi);
1369 CoreAudioBackend::n_physical_inputs () const
1373 for (size_t i = 0; i < _ports.size (); ++i) {
1374 CoreBackendPort* port = _ports[i];
1375 if (port->is_input () && port->is_physical ()) {
1376 switch (port->type ()) {
1377 case DataType::AUDIO: ++n_audio; break;
1378 case DataType::MIDI: ++n_midi; break;
1384 cc.set (DataType::AUDIO, n_audio);
1385 cc.set (DataType::MIDI, n_midi);
1389 /* Getting access to the data buffer for a port */
1392 CoreAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1395 assert (valid_port (port));
1396 return static_cast<CoreBackendPort*>(port)->get_buffer (nframes);
1400 CoreAudioBackend::pre_process ()
1402 bool connections_changed = false;
1403 bool ports_changed = false;
1404 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1405 if (_port_change_flag) {
1406 ports_changed = true;
1407 _port_change_flag = false;
1409 if (!_port_connection_queue.empty ()) {
1410 connections_changed = true;
1412 while (!_port_connection_queue.empty ()) {
1413 PortConnectData *c = _port_connection_queue.back ();
1414 manager.connect_callback (c->a, c->b, c->c);
1415 _port_connection_queue.pop_back ();
1418 pthread_mutex_unlock (&_port_callback_mutex);
1420 if (ports_changed) {
1421 manager.registration_callback();
1423 if (connections_changed) {
1424 manager.graph_order_callback();
1426 if (connections_changed || ports_changed) {
1427 engine.latency_callback(false);
1428 engine.latency_callback(true);
1433 CoreAudioBackend::freewheel_thread ()
1436 bool first_run = false;
1437 /* Freewheeling - use for export. The first call to
1438 * engine.process_callback() after engine.freewheel_callback will
1439 * if the first export cycle.
1440 * For reliable precise export timing, the calls need to be in sync.
1442 * Furthermore we need to make sure the registered process thread
1445 * _freewheeling = GUI thread state as set by ::freewheel()
1446 * _freewheel = in sync here (export thread)
1448 pthread_mutex_lock (&_freewheel_mutex);
1450 // check if we should run,
1451 if (_freewheeling != _freewheel) {
1452 if (!_freewheeling) {
1453 // prepare leaving freewheeling mode
1454 _freewheel = false; // first mark as disabled
1455 _reinit_thread_callback = true; // hand over _main_thread
1456 _freewheel_ack = false; // prepare next handshake
1457 _midiio->set_enabled(true);
1464 if (!_freewheel || !_freewheel_ack) {
1465 // wait for a change, we use a timed wait to
1466 // terminate early in case some error sets _run = 0
1469 gettimeofday (&tv, NULL);
1470 ts.tv_sec = tv.tv_sec + 3;
1472 pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts);
1477 // tell the engine we're ready to GO.
1478 engine.freewheel_callback (_freewheeling);
1480 _main_thread = pthread_self();
1481 AudioEngine::thread_init_callback (this);
1482 _midiio->set_enabled(false);
1485 // process port updates first in every cycle.
1488 // prevent coreaudio device changes
1489 pthread_mutex_lock (&_process_callback_mutex);
1493 // clear input buffers
1494 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1495 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1497 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
1498 static_cast<CoreMidiBuffer*>((*it)->get_buffer(0))->clear ();
1501 if (engine.process_callback (_samples_per_period)) {
1502 pthread_mutex_unlock (&_process_callback_mutex);
1506 pthread_mutex_unlock (&_process_callback_mutex);
1508 Glib::usleep (100); // don't hog cpu
1511 pthread_mutex_unlock (&_freewheel_mutex);
1516 // engine.process_callback() returner error
1517 engine.halted_callback("CoreAudio Freehweeling aborted.");
1523 CoreAudioBackend::process_callback ()
1526 uint64_t clock1, clock2;
1530 if (_run && _freewheel && !_freewheel_ack) {
1531 // acknowledge freewheeling; hand-over thread ID
1532 pthread_mutex_lock (&_freewheel_mutex);
1533 if (_freewheel) _freewheel_ack = true;
1534 pthread_cond_signal (&_freewheel_signal);
1535 pthread_mutex_unlock (&_freewheel_mutex);
1538 if (!_run || _freewheel || _preinit) {
1539 // NB if we return 1, the output is
1540 // zeroed by the coreaudio callback
1544 if (pthread_mutex_trylock (&_process_callback_mutex)) {
1545 // block while devices are added/removed
1549 if (_reinit_thread_callback || _main_thread != pthread_self()) {
1550 _reinit_thread_callback = false;
1551 _main_thread = pthread_self();
1552 AudioEngine::thread_init_callback (this);
1555 /* port-connection change */
1558 const uint32_t n_samples = _pcmio->n_samples();
1560 // cycle-length in usec
1561 const int64_t nominal_time = 1e6 * n_samples / _samplerate;
1563 clock1 = g_get_monotonic_time();
1567 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1568 CoreMidiBuffer* mbuf = static_cast<CoreMidiBuffer*>((*it)->get_buffer(0));
1571 uint8_t data[64]; // match MaxAlsaEventSize in alsa_rawmidi.cc
1572 size_t size = sizeof(data);
1573 while (_midiio->recv_event (i, nominal_time, time_ns, data, size)) {
1574 pframes_t time = floor((float) time_ns * _samplerate * 1e-9);
1575 assert (time < n_samples);
1576 midi_event_put((void*)mbuf, time, data, size);
1577 size = sizeof(data);
1583 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1584 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(n_samples)), n_samples);
1587 /* clear output buffers */
1588 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1589 memset ((*it)->get_buffer (n_samples), 0, n_samples * sizeof (Sample));
1592 _midiio->start_cycle();
1594 if (engine.process_callback (n_samples)) {
1595 fprintf(stderr, "ENGINE PROCESS ERROR\n");
1596 //_pcmio->pcm_stop ();
1598 pthread_mutex_unlock (&_process_callback_mutex);
1603 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1604 static_cast<CoreMidiPort*>(*it)->get_buffer(0);
1607 /* queue outgoing midi */
1609 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1610 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1611 for (CoreMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1612 _midiio->send_event (i, (*mit)->timestamp() / nominal_time, (*mit)->data(), (*mit)->size());
1616 /* write back audio */
1618 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1619 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (n_samples), n_samples);
1622 _processed_samples += n_samples;
1624 /* calc DSP load. */
1625 clock2 = g_get_monotonic_time();
1626 const int64_t elapsed_time = clock2 - clock1;
1627 _dsp_load = elapsed_time / (float) nominal_time;
1629 pthread_mutex_unlock (&_process_callback_mutex);
1634 CoreAudioBackend::error_callback ()
1636 _pcmio->set_error_callback (NULL, NULL);
1637 _pcmio->set_sample_rate_callback (NULL, NULL);
1638 _pcmio->set_xrun_callback (NULL, NULL);
1639 _midiio->set_port_changed_callback(NULL, NULL);
1640 engine.halted_callback("CoreAudio Process aborted.");
1645 CoreAudioBackend::xrun_callback ()
1651 CoreAudioBackend::buffer_size_callback ()
1653 uint32_t bs = _pcmio->samples_per_period();
1654 if (bs == _samples_per_period) {
1657 _samples_per_period = bs;
1658 engine.buffer_size_change (_samples_per_period);
1662 CoreAudioBackend::sample_rate_callback ()
1664 _pcmio->set_error_callback (NULL, NULL);
1665 _pcmio->set_sample_rate_callback (NULL, NULL);
1666 _pcmio->set_xrun_callback (NULL, NULL);
1667 _midiio->set_port_changed_callback(NULL, NULL);
1668 engine.halted_callback("Sample Rate Changed.");
1673 CoreAudioBackend::hw_changed_callback ()
1675 _reinit_thread_callback = true;
1676 engine.request_device_list_update();
1679 /******************************************************************************/
1681 static boost::shared_ptr<CoreAudioBackend> _instance;
1683 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1684 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1685 static int deinstantiate ();
1686 static bool already_configured ();
1687 static bool available ();
1689 static ARDOUR::AudioBackendInfo _descriptor = {
1698 static boost::shared_ptr<AudioBackend>
1699 backend_factory (AudioEngine& e)
1702 _instance.reset (new CoreAudioBackend (e, _descriptor));
1708 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1710 s_instance_name = arg1;
1722 already_configured ()
1733 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1735 return &_descriptor;
1739 /******************************************************************************/
1740 CoreBackendPort::CoreBackendPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1745 _capture_latency_range.min = 0;
1746 _capture_latency_range.max = 0;
1747 _playback_latency_range.min = 0;
1748 _playback_latency_range.max = 0;
1751 CoreBackendPort::~CoreBackendPort () {
1756 int CoreBackendPort::connect (CoreBackendPort *port)
1759 PBD::error << _("CoreBackendPort::connect (): invalid (null) port") << endmsg;
1763 if (type () != port->type ()) {
1764 PBD::error << _("CoreBackendPort::connect (): wrong port-type") << endmsg;
1768 if (is_output () && port->is_output ()) {
1769 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect output ports.") << endmsg;
1773 if (is_input () && port->is_input ()) {
1774 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect input ports.") << endmsg;
1779 PBD::error << _("CoreBackendPort::connect (): cannot self-connect ports.") << endmsg;
1783 if (is_connected (port)) {
1784 #if 0 // don't bother to warn about this for now. just ignore it
1785 PBD::error << _("CoreBackendPort::connect (): ports are already connected:")
1786 << " (" << name () << ") -> (" << port->name () << ")"
1792 _connect (port, true);
1797 void CoreBackendPort::_connect (CoreBackendPort *port, bool callback)
1799 _connections.push_back (port);
1801 port->_connect (this, false);
1802 _osx_backend.port_connect_callback (name(), port->name(), true);
1806 int CoreBackendPort::disconnect (CoreBackendPort *port)
1809 PBD::error << _("CoreBackendPort::disconnect (): invalid (null) port") << endmsg;
1813 if (!is_connected (port)) {
1814 PBD::error << _("CoreBackendPort::disconnect (): ports are not connected:")
1815 << " (" << name () << ") -> (" << port->name () << ")"
1819 _disconnect (port, true);
1823 void CoreBackendPort::_disconnect (CoreBackendPort *port, bool callback)
1825 std::vector<CoreBackendPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1827 assert (it != _connections.end ());
1829 _connections.erase (it);
1832 port->_disconnect (this, false);
1833 _osx_backend.port_connect_callback (name(), port->name(), false);
1838 void CoreBackendPort::disconnect_all ()
1840 while (!_connections.empty ()) {
1841 _connections.back ()->_disconnect (this, false);
1842 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1843 _connections.pop_back ();
1848 CoreBackendPort::is_connected (const CoreBackendPort *port) const
1850 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1853 bool CoreBackendPort::is_physically_connected () const
1855 for (std::vector<CoreBackendPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1856 if ((*it)->is_physical ()) {
1863 /******************************************************************************/
1865 CoreAudioPort::CoreAudioPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1866 : CoreBackendPort (b, name, flags)
1868 memset (_buffer, 0, sizeof (_buffer));
1869 mlock(_buffer, sizeof (_buffer));
1872 CoreAudioPort::~CoreAudioPort () { }
1874 void* CoreAudioPort::get_buffer (pframes_t n_samples)
1877 std::vector<CoreBackendPort*>::const_iterator it = get_connections ().begin ();
1878 if (it == get_connections ().end ()) {
1879 memset (_buffer, 0, n_samples * sizeof (Sample));
1881 CoreAudioPort const * source = static_cast<const CoreAudioPort*>(*it);
1882 assert (source && source->is_output ());
1883 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1884 while (++it != get_connections ().end ()) {
1885 source = static_cast<const CoreAudioPort*>(*it);
1886 assert (source && source->is_output ());
1887 Sample* dst = buffer ();
1888 const Sample* src = source->const_buffer ();
1889 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1899 CoreMidiPort::CoreMidiPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1900 : CoreBackendPort (b, name, flags)
1904 _buffer[0].clear ();
1905 _buffer[1].clear ();
1908 CoreMidiPort::~CoreMidiPort () { }
1910 struct MidiEventSorter {
1911 bool operator() (const boost::shared_ptr<CoreMidiEvent>& a, const boost::shared_ptr<CoreMidiEvent>& b) {
1916 void* CoreMidiPort::get_buffer (pframes_t /* nframes */)
1919 (_buffer[_bufperiod]).clear ();
1920 for (std::vector<CoreBackendPort*>::const_iterator i = get_connections ().begin ();
1921 i != get_connections ().end ();
1923 const CoreMidiBuffer * src = static_cast<const CoreMidiPort*>(*i)->const_buffer ();
1924 for (CoreMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1925 (_buffer[_bufperiod]).push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (**it)));
1928 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1930 return &(_buffer[_bufperiod]);
1933 CoreMidiEvent::CoreMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1935 , _timestamp (timestamp)
1939 _data = (uint8_t*) malloc (size);
1940 memcpy (_data, data, size);
1944 CoreMidiEvent::CoreMidiEvent (const CoreMidiEvent& other)
1945 : _size (other.size ())
1946 , _timestamp (other.timestamp ())
1949 if (other.size () && other.const_data ()) {
1950 _data = (uint8_t*) malloc (other.size ());
1951 memcpy (_data, other.const_data (), other.size ());
1955 CoreMidiEvent::~CoreMidiEvent () {