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;
44 /* static class instance access */
45 static void hw_changed_callback_ptr (void *arg)
47 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
48 d->hw_changed_callback();
51 static void error_callback_ptr (void *arg)
53 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
57 static void xrun_callback_ptr (void *arg)
59 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
63 static void buffer_size_callback_ptr (void *arg)
65 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
66 d->buffer_size_callback();
69 static void sample_rate_callback_ptr (void *arg)
71 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
72 d->sample_rate_callback();
75 static void midi_port_change (void *arg)
77 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
78 d->coremidi_rediscover ();
82 CoreAudioBackend::CoreAudioBackend (AudioEngine& e, AudioBackendInfo& info)
83 : AudioBackend (e, info)
87 , _freewheeling (false)
89 , _freewheel_ack (false)
90 , _reinit_thread_callback (false)
91 , _measure_latency (false)
92 , _last_process_start (0)
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;
262 /* Retrieving parameters */
264 CoreAudioBackend::device_name () const
266 return _audio_device;
270 CoreAudioBackend::sample_rate () const
276 CoreAudioBackend::buffer_size () const
278 return _samples_per_period;
282 CoreAudioBackend::interleaved () const
288 CoreAudioBackend::input_channels () const
294 CoreAudioBackend::output_channels () const
300 CoreAudioBackend::systemic_input_latency () const
302 return _systemic_audio_input_latency;
306 CoreAudioBackend::systemic_output_latency () const
308 return _systemic_audio_output_latency;
313 std::vector<std::string>
314 CoreAudioBackend::enumerate_midi_options () const
316 if (_midi_options.empty()) {
317 _midi_options.push_back (_("CoreMidi"));
318 _midi_options.push_back (_("None"));
320 return _midi_options;
324 CoreAudioBackend::set_midi_option (const std::string& opt)
326 if (opt != _("None") && opt != _("CoreMidi")) {
329 _midi_driver_option = opt;
334 CoreAudioBackend::midi_option () const
336 return _midi_driver_option;
340 CoreAudioBackend::launch_control_app ()
342 _pcmio->launch_control_app(name_to_id(_audio_device));
347 static void * pthread_freewheel (void *arg)
349 CoreAudioBackend *d = static_cast<CoreAudioBackend *>(arg);
350 d->freewheel_thread ();
355 static int process_callback_ptr (void *arg, const uint32_t n_samples, const uint64_t host_time)
357 CoreAudioBackend *d = static_cast<CoreAudioBackend*> (arg);
358 return d->process_callback(n_samples, host_time);
362 CoreAudioBackend::_start (bool for_latency_measurement)
364 if ((!_active_ca || !_active_fw) && _run) {
365 // recover from 'halted', reap threads
369 if (_active_ca || _active_fw || _run) {
370 PBD::error << _("CoreAudioBackend: already active.") << endmsg;
375 PBD::warning << _("CoreAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
376 _system_inputs.clear();
377 _system_outputs.clear();
378 _system_midi_in.clear();
379 _system_midi_out.clear();
383 uint32_t device1 = name_to_id(_audio_device); // usually input, but in an aggregate, 1st defines the clock
384 uint32_t device2 = name_to_id(_audio_device); // usually output
386 assert(_active_ca == false);
387 assert(_active_fw == false);
389 _freewheel_ack = false;
390 _reinit_thread_callback = true;
391 _last_process_start = 0;
393 _pcmio->set_error_callback (error_callback_ptr, this);
394 _pcmio->set_buffer_size_callback (buffer_size_callback_ptr, this);
395 _pcmio->set_sample_rate_callback (sample_rate_callback_ptr, this);
397 _pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this);
399 switch (_pcmio->state ()) {
400 case 0: /* OK */ break;
401 case -1: PBD::error << _("CoreAudioBackend: failed to open device.") << endmsg; break;
402 default: PBD::error << _("CoreAudioBackend: initialization failed.") << endmsg; break;
404 if (_pcmio->state ()) {
408 if (_n_outputs != _pcmio->n_playback_channels ()) {
409 if (_n_outputs == 0) {
410 _n_outputs = _pcmio->n_playback_channels ();
412 _n_outputs = std::min (_n_outputs, _pcmio->n_playback_channels ());
414 PBD::info << _("CoreAudioBackend: adjusted output channel count to match device.") << endmsg;
417 if (_n_inputs != _pcmio->n_capture_channels ()) {
418 if (_n_inputs == 0) {
419 _n_inputs = _pcmio->n_capture_channels ();
421 _n_inputs = std::min (_n_inputs, _pcmio->n_capture_channels ());
423 PBD::info << _("CoreAudioBackend: adjusted input channel count to match device.") << endmsg;
426 if (_pcmio->samples_per_period() != _samples_per_period) {
427 _samples_per_period = _pcmio->samples_per_period();
428 PBD::warning << _("CoreAudioBackend: samples per period does not match.") << endmsg;
431 if (_pcmio->sample_rate() != _samplerate) {
432 _samplerate = _pcmio->sample_rate();
433 engine.sample_rate_change (_samplerate);
434 PBD::warning << _("CoreAudioBackend: sample rate does not match.") << endmsg;
437 _measure_latency = for_latency_measurement;
441 _port_change_flag = false;
443 if (_midi_driver_option == _("CoreMidi")) {
444 _midiio->set_enabled(true);
445 _midiio->set_port_changed_callback(midi_port_change, this);
446 _midiio->start(); // triggers port discovery, callback coremidi_rediscover()
449 if (register_system_audio_ports()) {
450 PBD::error << _("CoreAudioBackend: failed to register system ports.") << endmsg;
455 engine.sample_rate_change (_samplerate);
456 engine.buffer_size_change (_samples_per_period);
458 if (engine.reestablish_ports ()) {
459 PBD::error << _("CoreAudioBackend: Could not re-establish ports.") << endmsg;
464 if (pthread_create (&_freeewheel_thread, NULL, pthread_freewheel, this))
466 PBD::error << _("CoreAudioBackend: failed to create process thread.") << endmsg;
467 delete _pcmio; _pcmio = 0;
473 while ((!_active_ca || !_active_fw) && --timeout > 0) { Glib::usleep (1000); }
476 PBD::error << _("CoreAudioBackend: failed to start.") << endmsg;
480 PBD::error << _("CoreAudioBackend: failed to start freewheeling thread.") << endmsg;
490 PBD::error << _("CoreAudioBackend: failed to start coreaudio.") << endmsg;
496 engine.reconnect_ports ();
498 // force an initial registration_callback() & latency re-compute
499 _port_change_flag = true;
503 _pcmio->set_xrun_callback (xrun_callback_ptr, this);
510 CoreAudioBackend::stop ()
519 _midiio->set_port_changed_callback(NULL, NULL);
522 pthread_mutex_lock (&_freewheel_mutex);
523 pthread_cond_signal (&_freewheel_signal);
524 pthread_mutex_unlock (&_freewheel_mutex);
526 if (pthread_join (_freeewheel_thread, &status)) {
527 PBD::error << _("CoreAudioBackend: failed to terminate.") << endmsg;
534 _active_fw = false; // ??
540 CoreAudioBackend::freewheel (bool onoff)
542 if (onoff == _freewheeling) {
545 _freewheeling = onoff;
546 // wake up freewheeling thread
547 if (0 == pthread_mutex_trylock (&_freewheel_mutex)) {
548 pthread_cond_signal (&_freewheel_signal);
549 pthread_mutex_unlock (&_freewheel_mutex);
555 CoreAudioBackend::dsp_load () const
557 return std::min(100.f, 100.f * _dsp_load);
561 CoreAudioBackend::raw_buffer_size (DataType t)
564 case DataType::AUDIO:
565 return _samples_per_period * sizeof(Sample);
567 return _max_buffer_size; // XXX not really limited
574 CoreAudioBackend::sample_time ()
576 return _processed_samples;
580 CoreAudioBackend::sample_time_at_cycle_start ()
582 return _processed_samples;
586 CoreAudioBackend::samples_since_cycle_start ()
588 if (!_active_ca || !_run || _freewheeling || _freewheel) {
591 if (_last_process_start == 0) {
595 const uint64_t now = AudioGetCurrentHostTime ();
596 const int64_t elapsed_time_ns = AudioConvertHostTimeToNanos(now - _last_process_start);
597 return std::max((pframes_t)0, (pframes_t)rint(1e-9 * elapsed_time_ns * _samplerate));
601 CoreAudioBackend::name_to_id(std::string device_name) const {
602 uint32_t device_id = UINT32_MAX;
603 std::map<size_t, std::string> devices;
604 _pcmio->device_list(devices);
606 for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
607 if (i->second == device_name) {
608 device_id = i->first;
616 CoreAudioBackend::coreaudio_process_thread (void *arg)
618 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
619 boost::function<void ()> f = td->f;
626 CoreAudioBackend::create_process_thread (boost::function<void()> func)
630 size_t stacksize = 100000;
632 ThreadData* td = new ThreadData (this, func, stacksize);
634 if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize,
635 &thread_id, coreaudio_process_thread, td)) {
636 pthread_attr_init (&attr);
637 pthread_attr_setstacksize (&attr, stacksize);
638 if (pthread_create (&thread_id, &attr, coreaudio_process_thread, td)) {
639 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
640 pthread_attr_destroy (&attr);
643 pthread_attr_destroy (&attr);
646 _threads.push_back (thread_id);
651 CoreAudioBackend::join_process_threads ()
655 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
658 if (pthread_join (*i, &status)) {
659 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
668 CoreAudioBackend::in_process_thread ()
670 if (pthread_equal (_main_thread, pthread_self()) != 0) {
674 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
676 if (pthread_equal (*i, pthread_self ()) != 0) {
684 CoreAudioBackend::process_thread_count ()
686 return _threads.size ();
690 CoreAudioBackend::update_latencies ()
692 // trigger latency callback in RT thread (locked graph)
693 port_connect_add_remove_callback();
699 CoreAudioBackend::private_handle () const
705 CoreAudioBackend::my_name () const
707 return _instance_name;
711 CoreAudioBackend::available () const
713 return _run && _active_fw && _active_ca;
717 CoreAudioBackend::port_name_size () const
723 CoreAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
725 if (!valid_port (port)) {
726 PBD::error << _("CoreAudioBackend::set_port_name: Invalid Port(s)") << endmsg;
729 return static_cast<CoreBackendPort*>(port)->set_name (_instance_name + ":" + name);
733 CoreAudioBackend::get_port_name (PortEngine::PortHandle port) const
735 if (!valid_port (port)) {
736 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
737 return std::string ();
739 return static_cast<CoreBackendPort*>(port)->name ();
743 CoreAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const
745 if (!valid_port (port)) {
746 PBD::error << _("CoreAudioBackend::get_port_name: Invalid Port(s)") << endmsg;
749 if (key == "http://jackaudio.org/metadata/pretty-name") {
751 value = static_cast<CoreBackendPort*>(port)->pretty_name ();
752 if (!value.empty()) {
759 PortEngine::PortHandle
760 CoreAudioBackend::get_port_by_name (const std::string& name) const
762 PortHandle port = (PortHandle) find_port (name);
767 CoreAudioBackend::get_ports (
768 const std::string& port_name_pattern,
769 DataType type, PortFlags flags,
770 std::vector<std::string>& port_names) const
774 bool use_regexp = false;
775 if (port_name_pattern.size () > 0) {
776 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
780 for (size_t i = 0; i < _ports.size (); ++i) {
781 CoreBackendPort* port = _ports[i];
782 if ((port->type () == type) && (port->flags () & flags)) {
783 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
784 port_names.push_back (port->name ());
790 regfree (&port_regex);
796 CoreAudioBackend::port_data_type (PortEngine::PortHandle port) const
798 if (!valid_port (port)) {
799 return DataType::NIL;
801 return static_cast<CoreBackendPort*>(port)->type ();
804 PortEngine::PortHandle
805 CoreAudioBackend::register_port (
806 const std::string& name,
807 ARDOUR::DataType type,
808 ARDOUR::PortFlags flags)
810 if (name.size () == 0) { return 0; }
811 if (flags & IsPhysical) { return 0; }
812 return add_port (_instance_name + ":" + name, type, flags);
815 PortEngine::PortHandle
816 CoreAudioBackend::add_port (
817 const std::string& name,
818 ARDOUR::DataType type,
819 ARDOUR::PortFlags flags)
821 assert(name.size ());
822 if (find_port (name)) {
823 PBD::error << _("CoreAudioBackend::register_port: Port already exists:")
824 << " (" << name << ")" << endmsg;
827 CoreBackendPort* port = NULL;
829 case DataType::AUDIO:
830 port = new CoreAudioPort (*this, name, flags);
833 port = new CoreMidiPort (*this, name, flags);
836 PBD::error << _("CoreAudioBackend::register_port: Invalid Data Type.") << endmsg;
840 _ports.push_back (port);
846 CoreAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
851 CoreBackendPort* port = static_cast<CoreBackendPort*>(port_handle);
852 std::vector<CoreBackendPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<CoreBackendPort*>(port_handle));
853 if (i == _ports.end ()) {
854 PBD::error << _("CoreAudioBackend::unregister_port: Failed to find port") << endmsg;
857 disconnect_all(port_handle);
863 CoreAudioBackend::register_system_audio_ports()
867 const uint32_t a_ins = _n_inputs;
868 const uint32_t a_out = _n_outputs;
870 const uint32_t coreaudio_reported_input_latency = _pcmio->get_latency(name_to_id(_audio_device), true);
871 const uint32_t coreaudio_reported_output_latency = _pcmio->get_latency(name_to_id(_audio_device), false);
874 printf("COREAUDIO LATENCY: i:%d, o:%d\n",
875 coreaudio_reported_input_latency,
876 coreaudio_reported_output_latency);
880 lr.min = lr.max = coreaudio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
881 for (uint32_t i = 0; i < a_ins; ++i) {
883 snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
884 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
886 set_latency_range (p, false, lr);
887 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
888 cp->set_pretty_name (_pcmio->cached_port_name(i, true));
889 _system_inputs.push_back(cp);
892 lr.min = lr.max = coreaudio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
893 for (uint32_t i = 0; i < a_out; ++i) {
895 snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
896 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
898 set_latency_range (p, true, lr);
899 CoreBackendPort *cp = static_cast<CoreBackendPort*>(p);
900 cp->set_pretty_name (_pcmio->cached_port_name(i, false));
901 _system_outputs.push_back(cp);
907 CoreAudioBackend::coremidi_rediscover()
909 if (!_run) { return; }
910 assert(_midi_driver_option == _("CoreMidi"));
912 pthread_mutex_lock (&_process_callback_mutex);
914 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) {
916 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
917 if ((*it)->name() == _midiio->port_id(i, false)) {
926 printf("unregister MIDI Output: %s\n", (*it)->name().c_str());
928 _port_change_flag = true;
929 unregister_port((*it));
930 it = _system_midi_out.erase(it);
934 for (std::vector<CoreBackendPort*>::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) {
936 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
937 if ((*it)->name() == _midiio->port_id(i, true)) {
946 printf("unregister MIDI Input: %s\n", (*it)->name().c_str());
948 _port_change_flag = true;
949 unregister_port((*it));
950 it = _system_midi_in.erase(it);
954 for (size_t i = 0; i < _midiio->n_midi_inputs(); ++i) {
955 std::string name = _midiio->port_id(i, true);
956 if (find_port_in(_system_midi_in, name)) {
961 printf("register MIDI Input: %s\n", name.c_str());
963 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
965 fprintf(stderr, "failed to register MIDI IN: %s\n", name.c_str());
969 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
970 set_latency_range (p, false, lr);
971 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
972 pp->set_pretty_name(_midiio->port_name(i, true));
973 _system_midi_in.push_back(pp);
974 _port_change_flag = true;
977 for (size_t i = 0; i < _midiio->n_midi_outputs(); ++i) {
978 std::string name = _midiio->port_id(i, false);
979 if (find_port_in(_system_midi_out, name)) {
984 printf("register MIDI OUT: %s\n", name.c_str());
986 PortHandle p = add_port(name, DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
988 fprintf(stderr, "failed to register MIDI OUT: %s\n", name.c_str());
992 lr.min = lr.max = _samples_per_period; // TODO add per-port midi-systemic latency
993 set_latency_range (p, false, lr);
994 CoreBackendPort *pp = static_cast<CoreBackendPort*>(p);
995 pp->set_pretty_name(_midiio->port_name(i, false));
996 _system_midi_out.push_back(pp);
997 _port_change_flag = true;
1001 assert(_system_midi_out.size() == _midiio->n_midi_outputs());
1002 assert(_system_midi_in.size() == _midiio->n_midi_inputs());
1004 pthread_mutex_unlock (&_process_callback_mutex);
1008 CoreAudioBackend::unregister_ports (bool system_only)
1011 _system_inputs.clear();
1012 _system_outputs.clear();
1013 _system_midi_in.clear();
1014 _system_midi_out.clear();
1015 while (i < _ports.size ()) {
1016 CoreBackendPort* port = _ports[i];
1017 if (! system_only || (port->is_physical () && port->is_terminal ())) {
1018 port->disconnect_all ();
1020 _ports.erase (_ports.begin() + i);
1028 CoreAudioBackend::connect (const std::string& src, const std::string& dst)
1030 CoreBackendPort* src_port = find_port (src);
1031 CoreBackendPort* dst_port = find_port (dst);
1034 PBD::error << _("CoreAudioBackend::connect: Invalid Source port:")
1035 << " (" << src <<")" << endmsg;
1039 PBD::error << _("CoreAudioBackend::connect: Invalid Destination port:")
1040 << " (" << dst <<")" << endmsg;
1043 return src_port->connect (dst_port);
1047 CoreAudioBackend::disconnect (const std::string& src, const std::string& dst)
1049 CoreBackendPort* src_port = find_port (src);
1050 CoreBackendPort* dst_port = find_port (dst);
1052 if (!src_port || !dst_port) {
1053 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1056 return src_port->disconnect (dst_port);
1060 CoreAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
1062 CoreBackendPort* dst_port = find_port (dst);
1063 if (!valid_port (src)) {
1064 PBD::error << _("CoreAudioBackend::connect: Invalid Source Port Handle") << endmsg;
1068 PBD::error << _("CoreAudioBackend::connect: Invalid Destination Port")
1069 << " (" << dst << ")" << endmsg;
1072 return static_cast<CoreBackendPort*>(src)->connect (dst_port);
1076 CoreAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
1078 CoreBackendPort* dst_port = find_port (dst);
1079 if (!valid_port (src) || !dst_port) {
1080 PBD::error << _("CoreAudioBackend::disconnect: Invalid Port(s)") << endmsg;
1083 return static_cast<CoreBackendPort*>(src)->disconnect (dst_port);
1087 CoreAudioBackend::disconnect_all (PortEngine::PortHandle port)
1089 if (!valid_port (port)) {
1090 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1093 static_cast<CoreBackendPort*>(port)->disconnect_all ();
1098 CoreAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
1100 if (!valid_port (port)) {
1101 PBD::error << _("CoreAudioBackend::disconnect_all: Invalid Port") << endmsg;
1104 return static_cast<CoreBackendPort*>(port)->is_connected ();
1108 CoreAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
1110 CoreBackendPort* dst_port = find_port (dst);
1111 if (!valid_port (src) || !dst_port) {
1112 PBD::error << _("CoreAudioBackend::connected_to: Invalid Port") << endmsg;
1115 return static_cast<CoreBackendPort*>(src)->is_connected (dst_port);
1119 CoreAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
1121 if (!valid_port (port)) {
1122 PBD::error << _("CoreAudioBackend::physically_connected: Invalid Port") << endmsg;
1125 return static_cast<CoreBackendPort*>(port)->is_physically_connected ();
1129 CoreAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
1131 if (!valid_port (port)) {
1132 PBD::error << _("CoreAudioBackend::get_connections: Invalid Port") << endmsg;
1136 assert (0 == names.size ());
1138 const std::vector<CoreBackendPort*>& connected_ports = static_cast<CoreBackendPort*>(port)->get_connections ();
1140 for (std::vector<CoreBackendPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
1141 names.push_back ((*i)->name ());
1144 return (int)names.size ();
1149 CoreAudioBackend::midi_event_get (
1150 pframes_t& timestamp,
1151 size_t& size, uint8_t** buf, void* port_buffer,
1152 uint32_t event_index)
1154 if (!buf || !port_buffer) return -1;
1155 CoreMidiBuffer& source = * static_cast<CoreMidiBuffer*>(port_buffer);
1156 if (event_index >= source.size ()) {
1159 CoreMidiEvent * const event = source[event_index].get ();
1161 timestamp = event->timestamp ();
1162 size = event->size ();
1163 *buf = event->data ();
1168 CoreAudioBackend::midi_event_put (
1170 pframes_t timestamp,
1171 const uint8_t* buffer, size_t size)
1173 if (!buffer || !port_buffer) return -1;
1174 CoreMidiBuffer& dst = * static_cast<CoreMidiBuffer*>(port_buffer);
1175 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
1177 // nevermind, ::get_buffer() sorts events
1178 fprintf (stderr, "CoreMidiBuffer: unordered event: %d > %d\n",
1179 (pframes_t)dst.back ()->timestamp (), timestamp);
1182 dst.push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (timestamp, buffer, size)));
1187 CoreAudioBackend::get_midi_event_count (void* port_buffer)
1189 if (!port_buffer) return 0;
1190 return static_cast<CoreMidiBuffer*>(port_buffer)->size ();
1194 CoreAudioBackend::midi_clear (void* port_buffer)
1196 if (!port_buffer) return;
1197 CoreMidiBuffer * buf = static_cast<CoreMidiBuffer*>(port_buffer);
1205 CoreAudioBackend::can_monitor_input () const
1211 CoreAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
1217 CoreAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
1223 CoreAudioBackend::monitoring_input (PortEngine::PortHandle)
1228 /* Latency management */
1231 CoreAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
1233 if (!valid_port (port)) {
1234 PBD::error << _("CoreBackendPort::set_latency_range (): invalid port.") << endmsg;
1236 static_cast<CoreBackendPort*>(port)->set_latency_range (latency_range, for_playback);
1240 CoreAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
1243 if (!valid_port (port)) {
1244 PBD::error << _("CoreBackendPort::get_latency_range (): invalid port.") << endmsg;
1249 CoreBackendPort* p = static_cast<CoreBackendPort*>(port);
1252 r = p->latency_range (for_playback);
1253 if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) {
1254 if (p->is_input() && for_playback) {
1255 r.min += _samples_per_period;
1256 r.max += _samples_per_period;
1258 if (p->is_output() && !for_playback) {
1259 r.min += _samples_per_period;
1260 r.max += _samples_per_period;
1266 /* Discovering physical ports */
1269 CoreAudioBackend::port_is_physical (PortEngine::PortHandle port) const
1271 if (!valid_port (port)) {
1272 PBD::error << _("CoreBackendPort::port_is_physical (): invalid port.") << endmsg;
1275 return static_cast<CoreBackendPort*>(port)->is_physical ();
1279 CoreAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
1281 for (size_t i = 0; i < _ports.size (); ++i) {
1282 CoreBackendPort* port = _ports[i];
1283 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
1284 port_names.push_back (port->name ());
1290 CoreAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
1292 for (size_t i = 0; i < _ports.size (); ++i) {
1293 CoreBackendPort* port = _ports[i];
1294 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
1295 port_names.push_back (port->name ());
1301 CoreAudioBackend::n_physical_outputs () const
1305 for (size_t i = 0; i < _ports.size (); ++i) {
1306 CoreBackendPort* port = _ports[i];
1307 if (port->is_output () && port->is_physical ()) {
1308 switch (port->type ()) {
1309 case DataType::AUDIO: ++n_audio; break;
1310 case DataType::MIDI: ++n_midi; break;
1316 cc.set (DataType::AUDIO, n_audio);
1317 cc.set (DataType::MIDI, n_midi);
1322 CoreAudioBackend::n_physical_inputs () const
1326 for (size_t i = 0; i < _ports.size (); ++i) {
1327 CoreBackendPort* port = _ports[i];
1328 if (port->is_input () && port->is_physical ()) {
1329 switch (port->type ()) {
1330 case DataType::AUDIO: ++n_audio; break;
1331 case DataType::MIDI: ++n_midi; break;
1337 cc.set (DataType::AUDIO, n_audio);
1338 cc.set (DataType::MIDI, n_midi);
1342 /* Getting access to the data buffer for a port */
1345 CoreAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
1347 if (!port || !valid_port (port)) return NULL;
1348 return static_cast<CoreBackendPort*>(port)->get_buffer (nframes);
1352 CoreAudioBackend::pre_process ()
1354 bool connections_changed = false;
1355 bool ports_changed = false;
1356 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1357 if (_port_change_flag) {
1358 ports_changed = true;
1359 _port_change_flag = false;
1361 if (!_port_connection_queue.empty ()) {
1362 connections_changed = true;
1364 while (!_port_connection_queue.empty ()) {
1365 PortConnectData *c = _port_connection_queue.back ();
1366 manager.connect_callback (c->a, c->b, c->c);
1367 _port_connection_queue.pop_back ();
1370 pthread_mutex_unlock (&_port_callback_mutex);
1372 if (ports_changed) {
1373 manager.registration_callback();
1375 if (connections_changed) {
1376 manager.graph_order_callback();
1378 if (connections_changed || ports_changed) {
1379 engine.latency_callback(false);
1380 engine.latency_callback(true);
1385 CoreAudioBackend::freewheel_thread ()
1388 bool first_run = false;
1389 /* Freewheeling - use for export. The first call to
1390 * engine.process_callback() after engine.freewheel_callback will
1391 * if the first export cycle.
1392 * For reliable precise export timing, the calls need to be in sync.
1394 * Furthermore we need to make sure the registered process thread
1397 * _freewheeling = GUI thread state as set by ::freewheel()
1398 * _freewheel = in sync here (export thread)
1400 pthread_mutex_lock (&_freewheel_mutex);
1402 // check if we should run,
1403 if (_freewheeling != _freewheel) {
1404 if (!_freewheeling) {
1405 // prepare leaving freewheeling mode
1406 _freewheel = false; // first mark as disabled
1407 _reinit_thread_callback = true; // hand over _main_thread
1408 _freewheel_ack = false; // prepare next handshake
1409 _midiio->set_enabled(true);
1416 if (!_freewheel || !_freewheel_ack) {
1417 // wait for a change, we use a timed wait to
1418 // terminate early in case some error sets _run = 0
1421 gettimeofday (&tv, NULL);
1422 ts.tv_sec = tv.tv_sec + 3;
1424 pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts);
1429 // tell the engine we're ready to GO.
1430 engine.freewheel_callback (_freewheeling);
1432 _main_thread = pthread_self();
1433 AudioEngine::thread_init_callback (this);
1434 _midiio->set_enabled(false);
1437 // process port updates first in every cycle.
1440 // prevent coreaudio device changes
1441 pthread_mutex_lock (&_process_callback_mutex);
1445 // clear input buffers
1446 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
1447 memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
1449 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
1450 static_cast<CoreMidiBuffer*>((*it)->get_buffer(0))->clear ();
1453 _last_process_start = 0;
1454 if (engine.process_callback (_samples_per_period)) {
1455 pthread_mutex_unlock (&_process_callback_mutex);
1459 pthread_mutex_unlock (&_process_callback_mutex);
1461 Glib::usleep (100); // don't hog cpu
1464 pthread_mutex_unlock (&_freewheel_mutex);
1469 // engine.process_callback() returner error
1470 engine.halted_callback("CoreAudio Freehweeling aborted.");
1476 CoreAudioBackend::process_callback (const uint32_t n_samples, const uint64_t host_time)
1479 uint64_t clock1, clock2;
1483 if (_run && _freewheel && !_freewheel_ack) {
1484 // acknowledge freewheeling; hand-over thread ID
1485 pthread_mutex_lock (&_freewheel_mutex);
1486 if (_freewheel) _freewheel_ack = true;
1487 pthread_cond_signal (&_freewheel_signal);
1488 pthread_mutex_unlock (&_freewheel_mutex);
1491 if (!_run || _freewheel || _preinit) {
1492 // NB if we return 1, the output is
1493 // zeroed by the coreaudio callback
1497 if (_reinit_thread_callback || _main_thread != pthread_self()) {
1498 _reinit_thread_callback = false;
1499 _main_thread = pthread_self();
1500 AudioEngine::thread_init_callback (this);
1503 if (pthread_mutex_trylock (&_process_callback_mutex)) {
1504 // block while devices are added/removed
1506 printf("Xrun due to device change\n");
1511 /* port-connection change */
1514 // cycle-length in usec
1515 const double nominal_time = 1e6 * n_samples / _samplerate;
1517 clock1 = g_get_monotonic_time();
1521 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
1522 CoreMidiBuffer* mbuf = static_cast<CoreMidiBuffer*>((*it)->get_buffer(0));
1525 uint8_t data[128]; // matches CoreMidi's MIDIPacket
1526 size_t size = sizeof(data);
1527 while (_midiio->recv_event (i, nominal_time, time_ns, data, size)) {
1528 pframes_t time = floor((float) time_ns * _samplerate * 1e-9);
1529 assert (time < n_samples);
1530 midi_event_put((void*)mbuf, time, data, size);
1531 size = sizeof(data);
1537 for (std::vector<CoreBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
1538 _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(n_samples)), n_samples);
1541 /* clear output buffers */
1542 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
1543 memset ((*it)->get_buffer (n_samples), 0, n_samples * sizeof (Sample));
1546 _midiio->start_cycle();
1547 _last_process_start = host_time;
1549 if (engine.process_callback (n_samples)) {
1550 fprintf(stderr, "ENGINE PROCESS ERROR\n");
1551 //_pcmio->pcm_stop ();
1553 pthread_mutex_unlock (&_process_callback_mutex);
1558 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
1559 static_cast<CoreMidiPort*>(*it)->get_buffer(0);
1562 /* queue outgoing midi */
1564 for (std::vector<CoreBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
1565 #if 0 // something's still b0rked with CoreMidiIo::send_events()
1566 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1567 _midiio->send_events (i, nominal_time, (void*)src);
1569 const CoreMidiBuffer *src = static_cast<const CoreMidiPort*>(*it)->const_buffer();
1570 for (CoreMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
1571 _midiio->send_event (i, (*mit)->timestamp() / nominal_time, (*mit)->data(), (*mit)->size());
1576 /* write back audio */
1578 for (std::vector<CoreBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
1579 _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (n_samples), n_samples);
1582 _processed_samples += n_samples;
1584 /* calc DSP load. */
1585 clock2 = g_get_monotonic_time();
1586 const int64_t elapsed_time = clock2 - clock1;
1588 const float load = elapsed_time / (float) nominal_time;
1589 if (load > _dsp_load) {
1592 const float a = .2 * _samples_per_period / _samplerate;
1593 _dsp_load = _dsp_load + a * (load - _dsp_load) + 1e-12;
1596 pthread_mutex_unlock (&_process_callback_mutex);
1601 CoreAudioBackend::error_callback ()
1603 _pcmio->set_error_callback (NULL, NULL);
1604 _pcmio->set_sample_rate_callback (NULL, NULL);
1605 _pcmio->set_xrun_callback (NULL, NULL);
1606 _midiio->set_port_changed_callback(NULL, NULL);
1607 engine.halted_callback("CoreAudio Process aborted.");
1612 CoreAudioBackend::xrun_callback ()
1618 CoreAudioBackend::buffer_size_callback ()
1620 uint32_t bs = _pcmio->samples_per_period();
1621 if (bs == _samples_per_period) {
1624 _samples_per_period = bs;
1625 engine.buffer_size_change (_samples_per_period);
1629 CoreAudioBackend::sample_rate_callback ()
1631 _pcmio->set_error_callback (NULL, NULL);
1632 _pcmio->set_sample_rate_callback (NULL, NULL);
1633 _pcmio->set_xrun_callback (NULL, NULL);
1634 _midiio->set_port_changed_callback(NULL, NULL);
1635 engine.halted_callback("Sample Rate Changed.");
1640 CoreAudioBackend::hw_changed_callback ()
1642 _reinit_thread_callback = true;
1643 engine.request_device_list_update();
1646 /******************************************************************************/
1648 static boost::shared_ptr<CoreAudioBackend> _instance;
1650 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1651 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1652 static int deinstantiate ();
1653 static bool already_configured ();
1654 static bool available ();
1656 static ARDOUR::AudioBackendInfo _descriptor = {
1665 static boost::shared_ptr<AudioBackend>
1666 backend_factory (AudioEngine& e)
1669 _instance.reset (new CoreAudioBackend (e, _descriptor));
1675 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1677 s_instance_name = arg1;
1689 already_configured ()
1700 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1702 return &_descriptor;
1706 /******************************************************************************/
1707 CoreBackendPort::CoreBackendPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1712 _capture_latency_range.min = 0;
1713 _capture_latency_range.max = 0;
1714 _playback_latency_range.min = 0;
1715 _playback_latency_range.max = 0;
1718 CoreBackendPort::~CoreBackendPort () {
1723 int CoreBackendPort::connect (CoreBackendPort *port)
1726 PBD::error << _("CoreBackendPort::connect (): invalid (null) port") << endmsg;
1730 if (type () != port->type ()) {
1731 PBD::error << _("CoreBackendPort::connect (): wrong port-type") << endmsg;
1735 if (is_output () && port->is_output ()) {
1736 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect output ports.") << endmsg;
1740 if (is_input () && port->is_input ()) {
1741 PBD::error << _("CoreBackendPort::connect (): cannot inter-connect input ports.") << endmsg;
1746 PBD::error << _("CoreBackendPort::connect (): cannot self-connect ports.") << endmsg;
1750 if (is_connected (port)) {
1751 #if 0 // don't bother to warn about this for now. just ignore it
1752 PBD::error << _("CoreBackendPort::connect (): ports are already connected:")
1753 << " (" << name () << ") -> (" << port->name () << ")"
1759 _connect (port, true);
1764 void CoreBackendPort::_connect (CoreBackendPort *port, bool callback)
1766 _connections.push_back (port);
1768 port->_connect (this, false);
1769 _osx_backend.port_connect_callback (name(), port->name(), true);
1773 int CoreBackendPort::disconnect (CoreBackendPort *port)
1776 PBD::error << _("CoreBackendPort::disconnect (): invalid (null) port") << endmsg;
1780 if (!is_connected (port)) {
1781 PBD::error << _("CoreBackendPort::disconnect (): ports are not connected:")
1782 << " (" << name () << ") -> (" << port->name () << ")"
1786 _disconnect (port, true);
1790 void CoreBackendPort::_disconnect (CoreBackendPort *port, bool callback)
1792 std::vector<CoreBackendPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1794 assert (it != _connections.end ());
1796 _connections.erase (it);
1799 port->_disconnect (this, false);
1800 _osx_backend.port_connect_callback (name(), port->name(), false);
1805 void CoreBackendPort::disconnect_all ()
1807 while (!_connections.empty ()) {
1808 _connections.back ()->_disconnect (this, false);
1809 _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1810 _connections.pop_back ();
1815 CoreBackendPort::is_connected (const CoreBackendPort *port) const
1817 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1820 bool CoreBackendPort::is_physically_connected () const
1822 for (std::vector<CoreBackendPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1823 if ((*it)->is_physical ()) {
1830 /******************************************************************************/
1832 CoreAudioPort::CoreAudioPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1833 : CoreBackendPort (b, name, flags)
1835 memset (_buffer, 0, sizeof (_buffer));
1836 mlock(_buffer, sizeof (_buffer));
1839 CoreAudioPort::~CoreAudioPort () { }
1841 void* CoreAudioPort::get_buffer (pframes_t n_samples)
1844 std::vector<CoreBackendPort*>::const_iterator it = get_connections ().begin ();
1845 if (it == get_connections ().end ()) {
1846 memset (_buffer, 0, n_samples * sizeof (Sample));
1848 CoreAudioPort const * source = static_cast<const CoreAudioPort*>(*it);
1849 assert (source && source->is_output ());
1850 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1851 while (++it != get_connections ().end ()) {
1852 source = static_cast<const CoreAudioPort*>(*it);
1853 assert (source && source->is_output ());
1854 Sample* dst = buffer ();
1855 const Sample* src = source->const_buffer ();
1856 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1866 CoreMidiPort::CoreMidiPort (CoreAudioBackend &b, const std::string& name, PortFlags flags)
1867 : CoreBackendPort (b, name, flags)
1871 _buffer[0].clear ();
1872 _buffer[1].clear ();
1875 CoreMidiPort::~CoreMidiPort () { }
1877 struct MidiEventSorter {
1878 bool operator() (const boost::shared_ptr<CoreMidiEvent>& a, const boost::shared_ptr<CoreMidiEvent>& b) {
1883 void* CoreMidiPort::get_buffer (pframes_t /* nframes */)
1886 (_buffer[_bufperiod]).clear ();
1887 for (std::vector<CoreBackendPort*>::const_iterator i = get_connections ().begin ();
1888 i != get_connections ().end ();
1890 const CoreMidiBuffer * src = static_cast<const CoreMidiPort*>(*i)->const_buffer ();
1891 for (CoreMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
1892 (_buffer[_bufperiod]).push_back (boost::shared_ptr<CoreMidiEvent>(new CoreMidiEvent (**it)));
1895 std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
1897 return &(_buffer[_bufperiod]);
1900 CoreMidiEvent::CoreMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1902 , _timestamp (timestamp)
1906 _data = (uint8_t*) malloc (size);
1907 memcpy (_data, data, size);
1911 CoreMidiEvent::CoreMidiEvent (const CoreMidiEvent& other)
1912 : _size (other.size ())
1913 , _timestamp (other.timestamp ())
1916 if (other.size () && other.const_data ()) {
1917 _data = (uint8_t*) malloc (other.size ());
1918 memcpy (_data, other.const_data (), other.size ());
1922 CoreMidiEvent::~CoreMidiEvent () {