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.
25 #include "dummy_audiobackend.h"
26 #include "pbd/error.h"
29 using namespace ARDOUR;
31 static std::string s_instance_name;
32 size_t DummyAudioBackend::_max_buffer_size = 8192;
34 DummyAudioBackend::DummyAudioBackend (AudioEngine& e, AudioBackendInfo& info)
35 : AudioBackend (e, info)
37 , _freewheeling (false)
39 , _samples_per_period (1024)
45 , _systemic_input_latency (0)
46 , _systemic_output_latency (0)
47 , _processed_samples (0)
49 _instance_name = s_instance_name;
52 DummyAudioBackend::~DummyAudioBackend ()
56 /* AUDIOBACKEND API */
59 DummyAudioBackend::name () const
65 DummyAudioBackend::is_realtime () const
70 std::vector<AudioBackend::DeviceStatus>
71 DummyAudioBackend::enumerate_devices () const
73 std::vector<AudioBackend::DeviceStatus> s;
74 s.push_back (DeviceStatus (_("Dummy"), true));
79 DummyAudioBackend::available_sample_rates (const std::string&) const
81 std::vector<float> sr;
82 sr.push_back (8000.0);
83 sr.push_back (22050.0);
84 sr.push_back (24000.0);
85 sr.push_back (44100.0);
86 sr.push_back (48000.0);
87 sr.push_back (88200.0);
88 sr.push_back (96000.0);
89 sr.push_back (176400.0);
90 sr.push_back (192000.0);
95 DummyAudioBackend::available_buffer_sizes (const std::string&) const
97 std::vector<uint32_t> bs;
114 DummyAudioBackend::available_input_channel_count (const std::string&) const
120 DummyAudioBackend::available_output_channel_count (const std::string&) const
126 DummyAudioBackend::can_change_sample_rate_when_running () const
132 DummyAudioBackend::can_change_buffer_size_when_running () const
138 DummyAudioBackend::set_device_name (const std::string&)
144 DummyAudioBackend::set_sample_rate (float sr)
146 if (sr <= 0) { return -1; }
148 engine.sample_rate_change (sr);
153 DummyAudioBackend::set_buffer_size (uint32_t bs)
155 if (bs <= 0 || bs >= _max_buffer_size) {
158 _samples_per_period = bs;
159 engine.buffer_size_change (bs);
164 DummyAudioBackend::set_interleaved (bool yn)
166 if (!yn) { return 0; }
171 DummyAudioBackend::set_input_channels (uint32_t cc)
178 DummyAudioBackend::set_output_channels (uint32_t cc)
185 DummyAudioBackend::set_systemic_input_latency (uint32_t sl)
187 _systemic_input_latency = sl;
192 DummyAudioBackend::set_systemic_output_latency (uint32_t sl)
194 _systemic_output_latency = sl;
198 /* Retrieving parameters */
200 DummyAudioBackend::device_name () const
202 return _("Dummy Device");
206 DummyAudioBackend::sample_rate () const
212 DummyAudioBackend::buffer_size () const
214 return _samples_per_period;
218 DummyAudioBackend::interleaved () const
224 DummyAudioBackend::input_channels () const
230 DummyAudioBackend::output_channels () const
236 DummyAudioBackend::systemic_input_latency () const
238 return _systemic_input_latency;
242 DummyAudioBackend::systemic_output_latency () const
244 return _systemic_output_latency;
248 std::vector<std::string>
249 DummyAudioBackend::enumerate_midi_options () const
251 std::vector<std::string> m;
252 m.push_back (_("1 in, 1 out"));
253 m.push_back (_("2 in, 2 out"));
254 m.push_back (_("8 in, 8 out"));
259 DummyAudioBackend::set_midi_option (const std::string& opt)
261 if (opt == _("1 in, 1 out")) {
262 _n_midi_inputs = _n_midi_outputs = 1;
264 else if (opt == _("2 in, 2 out")) {
265 _n_midi_inputs = _n_midi_outputs = 2;
267 else if (opt == _("8 in, 8 out")) {
268 _n_midi_inputs = _n_midi_outputs = 8;
271 _n_midi_inputs = _n_midi_outputs = 0;
277 DummyAudioBackend::midi_option () const
284 static void * pthread_process (void *arg)
286 DummyAudioBackend *d = static_cast<DummyAudioBackend *>(arg);
287 d->main_process_thread ();
293 DummyAudioBackend::_start (bool /*for_latency_measurement*/)
296 PBD::error << _("DummyAudioBackend: already active.") << endmsg;
301 PBD::warning << _("DummyAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
305 if (register_system_ports()) {
306 PBD::error << _("DummyAudioBackend: failed to register system ports.") << endmsg;
310 if (engine.reestablish_ports ()) {
311 PBD::error << _("DummyAudioBackend: Could not re-establish ports.") << endmsg;
316 engine.reconnect_ports ();
318 if (pthread_create (&_main_thread, NULL, pthread_process, this)) {
319 PBD::error << _("DummyAudioBackend: cannot start.") << endmsg;
323 while (!_running && --timeout > 0) { Glib::usleep (1000); }
325 if (timeout == 0 || !_running) {
326 PBD::error << _("DummyAudioBackend: failed to start process thread.") << endmsg;
334 DummyAudioBackend::stop ()
342 if (pthread_join (_main_thread, &status)) {
343 PBD::error << _("DummyAudioBackend: failed to terminate.") << endmsg;
346 unregister_system_ports();
351 DummyAudioBackend::freewheel (bool onoff)
353 if (onoff == _freewheeling) {
356 _freewheeling = onoff;
357 engine.freewheel_callback (onoff);
362 DummyAudioBackend::dsp_load () const
364 return 100.f * _dsp_load;
368 DummyAudioBackend::raw_buffer_size (DataType t)
371 case DataType::AUDIO:
372 return _max_buffer_size * sizeof(Sample);
374 return _max_buffer_size; // XXX not really limited
381 DummyAudioBackend::sample_time ()
383 return _processed_samples;
387 DummyAudioBackend::sample_time_at_cycle_start ()
389 return _processed_samples;
393 DummyAudioBackend::samples_since_cycle_start ()
400 DummyAudioBackend::dummy_process_thread (void *arg)
402 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
403 boost::function<void ()> f = td->f;
410 DummyAudioBackend::create_process_thread (boost::function<void()> func)
414 size_t stacksize = 100000;
416 pthread_attr_init (&attr);
417 pthread_attr_setstacksize (&attr, stacksize);
418 ThreadData* td = new ThreadData (this, func, stacksize);
420 if (pthread_create (&thread_id, &attr, dummy_process_thread, td)) {
421 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
425 _threads.push_back (thread_id);
430 DummyAudioBackend::join_process_threads ()
434 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
437 if (pthread_join (*i, &status)) {
438 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
447 DummyAudioBackend::in_process_thread ()
449 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
451 if (pthread_equal (*i, pthread_self ()) != 0) {
459 DummyAudioBackend::process_thread_count ()
461 return _threads.size ();
465 DummyAudioBackend::update_latencies ()
472 DummyAudioBackend::private_handle () const
478 DummyAudioBackend::my_name () const
480 return _instance_name;
484 DummyAudioBackend::available () const
490 DummyAudioBackend::port_name_size () const
496 DummyAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
498 if (!valid_port (port)) {
499 PBD::error << _("DummyBackend::set_port_name: Invalid Port(s)") << endmsg;
502 return static_cast<DummyPort*>(port)->set_name (_instance_name + ":" + name);
506 DummyAudioBackend::get_port_name (PortEngine::PortHandle port) const
508 if (!valid_port (port)) {
509 PBD::error << _("DummyBackend::get_port_name: Invalid Port(s)") << endmsg;
510 return std::string ();
512 return static_cast<DummyPort*>(port)->name ();
515 PortEngine::PortHandle
516 DummyAudioBackend::get_port_by_name (const std::string& name) const
518 PortHandle port = (PortHandle) find_port (name);
523 DummyAudioBackend::get_ports (
524 const std::string& port_name_pattern,
525 DataType type, PortFlags flags,
526 std::vector<std::string>& port_names) const
530 bool use_regexp = false;
531 if (port_name_pattern.size () > 0) {
532 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
536 for (size_t i = 0; i < _ports.size (); ++i) {
537 DummyPort* port = _ports[i];
538 if ((port->type () == type) && (port->flags () & flags)) {
539 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
540 port_names.push_back (port->name ());
546 regfree (&port_regex);
552 DummyAudioBackend::port_data_type (PortEngine::PortHandle port) const
554 if (!valid_port (port)) {
555 return DataType::NIL;
557 return static_cast<DummyPort*>(port)->type ();
560 PortEngine::PortHandle
561 DummyAudioBackend::register_port (
562 const std::string& name,
563 ARDOUR::DataType type,
564 ARDOUR::PortFlags flags)
566 if (name.size () == 0) { return 0; }
567 if (flags & IsPhysical) { return 0; }
568 return add_port (_instance_name + ":" + name, type, flags);
571 PortEngine::PortHandle
572 DummyAudioBackend::add_port (
573 const std::string& name,
574 ARDOUR::DataType type,
575 ARDOUR::PortFlags flags)
577 assert(name.size ());
578 if (find_port (name)) {
579 PBD::error << _("DummyBackend::register_port: Port already exists:")
580 << " (" << name << ")" << endmsg;
583 DummyPort* port = NULL;
585 case DataType::AUDIO:
586 port = new DummyAudioPort (name, flags);
589 port = new DummyMidiPort (name, flags);
592 PBD::error << _("DummyBackend::register_port: Invalid Data Type.") << endmsg;
596 _ports.push_back (port);
602 DummyAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
604 if (!valid_port (port_handle)) {
605 PBD::error << _("DummyBackend::unregister_port: Invalid Port.") << endmsg;
607 DummyPort* port = static_cast<DummyPort*>(port_handle);
608 std::vector<DummyPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<DummyPort*>(port_handle));
609 if (i == _ports.end ()) {
610 PBD::error << _("DummyBackend::unregister_port: Failed to find port") << endmsg;
613 disconnect_all(port_handle);
619 DummyAudioBackend::register_system_ports()
623 const int a_ins = _n_inputs > 0 ? _n_inputs : 8;
624 const int a_out = _n_outputs > 0 ? _n_outputs : 8;
625 const int m_ins = _n_midi_inputs > 0 ? _n_midi_inputs : 2;
626 const int m_out = _n_midi_outputs > 0 ? _n_midi_outputs : 2;
629 lr.min = lr.max = _samples_per_period + _systemic_input_latency;
630 for (int i = 1; i <= a_ins; ++i) {
632 snprintf(tmp, sizeof(tmp), "system:capture_%d", i);
633 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
635 set_latency_range (p, false, lr);
638 lr.min = lr.max = _samples_per_period + _systemic_output_latency;
639 for (int i = 1; i <= a_out; ++i) {
641 snprintf(tmp, sizeof(tmp), "system:playback_%d", i);
642 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
644 set_latency_range (p, false, lr);
648 lr.min = lr.max = _samples_per_period + _systemic_input_latency;
649 for (int i = 1; i <= m_ins; ++i) {
651 snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", i);
652 PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
654 set_latency_range (p, false, lr);
657 lr.min = lr.max = _samples_per_period + _systemic_output_latency;
658 for (int i = 1; i <= m_out; ++i) {
660 snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", i);
661 PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
663 set_latency_range (p, false, lr);
670 DummyAudioBackend::unregister_system_ports()
673 while (i < _ports.size ()) {
674 DummyPort* port = _ports[i];
675 if (port->is_physical () && port->is_terminal ()) {
676 port->disconnect_all ();
677 _ports.erase (_ports.begin() + i);
685 DummyAudioBackend::connect (const std::string& src, const std::string& dst)
687 DummyPort* src_port = find_port (src);
688 DummyPort* dst_port = find_port (dst);
691 PBD::error << _("DummyBackend::connect: Invalid Source port:")
692 << " (" << src <<")" << endmsg;
696 PBD::error << _("DummyBackend::connect: Invalid Destination port:")
697 << " (" << dst <<")" << endmsg;
700 return src_port->connect (dst_port);
704 DummyAudioBackend::disconnect (const std::string& src, const std::string& dst)
706 DummyPort* src_port = find_port (src);
707 DummyPort* dst_port = find_port (dst);
709 if (!src_port || !dst_port) {
710 PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
713 return src_port->disconnect (dst_port);
717 DummyAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
719 DummyPort* dst_port = find_port (dst);
720 if (!valid_port (src)) {
721 PBD::error << _("DummyBackend::connect: Invalid Source Port Handle") << endmsg;
725 PBD::error << _("DummyBackend::connect: Invalid Destination Port")
726 << " (" << dst << ")" << endmsg;
729 return static_cast<DummyPort*>(src)->connect (dst_port);
733 DummyAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
735 DummyPort* dst_port = find_port (dst);
736 if (!valid_port (src) || !dst_port) {
737 PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
740 return static_cast<DummyPort*>(src)->disconnect (dst_port);
744 DummyAudioBackend::disconnect_all (PortEngine::PortHandle port)
746 if (!valid_port (port)) {
747 PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
750 static_cast<DummyPort*>(port)->disconnect_all ();
755 DummyAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
757 if (!valid_port (port)) {
758 PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
761 return static_cast<DummyPort*>(port)->is_connected ();
765 DummyAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
767 DummyPort* dst_port = find_port (dst);
768 if (!valid_port (src) || !dst_port) {
769 PBD::error << _("DummyBackend::connected_to: Invalid Port") << endmsg;
772 return static_cast<DummyPort*>(src)->is_connected (dst_port);
776 DummyAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
778 if (!valid_port (port)) {
779 PBD::error << _("DummyBackend::physically_connected: Invalid Port") << endmsg;
782 return static_cast<DummyPort*>(port)->is_physically_connected ();
786 DummyAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
788 if (!valid_port (port)) {
789 PBD::error << _("DummyBackend::get_connections: Invalid Port") << endmsg;
793 assert (0 == names.size ());
795 const std::vector<DummyPort*>& connected_ports = static_cast<DummyPort*>(port)->get_connections ();
797 for (std::vector<DummyPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
798 names.push_back ((*i)->name ());
801 return (int)names.size ();
806 DummyAudioBackend::midi_event_get (
807 pframes_t& timestamp,
808 size_t& size, uint8_t** buf, void* port_buffer,
809 uint32_t event_index)
811 assert (buf && port_buffer);
812 DummyMidiBuffer& source = * static_cast<DummyMidiBuffer*>(port_buffer);
813 if (event_index >= source.size ()) {
816 DummyMidiEvent * const event = source[event_index].get ();
818 timestamp = event->timestamp ();
819 size = event->size ();
820 *buf = event->data ();
825 DummyAudioBackend::midi_event_put (
828 const uint8_t* buffer, size_t size)
830 assert (buffer && port_buffer);
831 DummyMidiBuffer& dst = * static_cast<DummyMidiBuffer*>(port_buffer);
832 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
833 fprintf (stderr, "DummyMidiBuffer: it's too late for this event.\n");
836 dst.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (timestamp, buffer, size)));
841 DummyAudioBackend::get_midi_event_count (void* port_buffer)
843 assert (port_buffer && _running);
844 return static_cast<DummyMidiBuffer*>(port_buffer)->size ();
848 DummyAudioBackend::midi_clear (void* port_buffer)
850 assert (port_buffer && _running);
851 DummyMidiBuffer * buf = static_cast<DummyMidiBuffer*>(port_buffer);
859 DummyAudioBackend::can_monitor_input () const
865 DummyAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
871 DummyAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
877 DummyAudioBackend::monitoring_input (PortEngine::PortHandle)
882 /* Latency management */
885 DummyAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
887 if (!valid_port (port)) {
888 PBD::error << _("DummyPort::set_latency_range (): invalid port.") << endmsg;
890 static_cast<DummyPort*>(port)->set_latency_range (latency_range, for_playback);
894 DummyAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
896 if (!valid_port (port)) {
897 PBD::error << _("DummyPort::get_latency_range (): invalid port.") << endmsg;
903 return static_cast<DummyPort*>(port)->latency_range (for_playback);
906 /* Discovering physical ports */
909 DummyAudioBackend::port_is_physical (PortEngine::PortHandle port) const
911 if (!valid_port (port)) {
912 PBD::error << _("DummyPort::port_is_physical (): invalid port.") << endmsg;
915 return static_cast<DummyPort*>(port)->is_physical ();
919 DummyAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
921 for (size_t i = 0; i < _ports.size (); ++i) {
922 DummyPort* port = _ports[i];
923 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
924 port_names.push_back (port->name ());
930 DummyAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
932 for (size_t i = 0; i < _ports.size (); ++i) {
933 DummyPort* port = _ports[i];
934 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
935 port_names.push_back (port->name ());
941 DummyAudioBackend::n_physical_outputs () const
945 for (size_t i = 0; i < _ports.size (); ++i) {
946 DummyPort* port = _ports[i];
947 if (port->is_output () && port->is_physical ()) {
948 switch (port->type ()) {
949 case DataType::AUDIO: ++n_audio; break;
950 case DataType::MIDI: ++n_midi; break;
956 cc.set (DataType::AUDIO, n_audio);
957 cc.set (DataType::MIDI, n_midi);
962 DummyAudioBackend::n_physical_inputs () const
966 for (size_t i = 0; i < _ports.size (); ++i) {
967 DummyPort* port = _ports[i];
968 if (port->is_input () && port->is_physical ()) {
969 switch (port->type ()) {
970 case DataType::AUDIO: ++n_audio; break;
971 case DataType::MIDI: ++n_midi; break;
977 cc.set (DataType::AUDIO, n_audio);
978 cc.set (DataType::MIDI, n_midi);
982 /* Getting access to the data buffer for a port */
985 DummyAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
987 assert (port && _running);
988 assert (valid_port (port));
989 return static_cast<DummyPort*>(port)->get_buffer (nframes);
994 DummyAudioBackend::main_process_thread ()
996 AudioEngine::thread_init_callback (this);
998 _processed_samples = 0;
1000 uint64_t clock1, clock2;
1001 clock1 = g_get_monotonic_time();
1003 if (engine.process_callback (_samples_per_period)) {
1006 _processed_samples += _samples_per_period;
1007 if (!_freewheeling) {
1008 clock2 = g_get_monotonic_time();
1009 const int64_t elapsed_time = clock2 - clock1;
1010 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1011 _dsp_load = elapsed_time / (float) nomial_time;
1012 if (elapsed_time < nomial_time) {
1013 Glib::usleep (nomial_time - elapsed_time);
1015 Glib::usleep (100); // don't hog cpu
1019 Glib::usleep (100); // don't hog cpu
1021 clock1 = g_get_monotonic_time();
1028 /******************************************************************************/
1030 static boost::shared_ptr<DummyAudioBackend> _instance;
1032 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1033 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1034 static int deinstantiate ();
1035 static bool already_configured ();
1037 static ARDOUR::AudioBackendInfo _descriptor = {
1045 static boost::shared_ptr<AudioBackend>
1046 backend_factory (AudioEngine& e)
1049 _instance.reset (new DummyAudioBackend (e, _descriptor));
1055 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1057 s_instance_name = arg1;
1069 already_configured ()
1074 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1076 return &_descriptor;
1080 /******************************************************************************/
1081 DummyPort::DummyPort (const std::string& name, PortFlags flags)
1085 _capture_latency_range.min = 0;
1086 _capture_latency_range.max = 0;
1087 _playback_latency_range.min = 0;
1088 _playback_latency_range.max = 0;
1091 DummyPort::~DummyPort () {
1096 int DummyPort::connect (DummyPort *port)
1099 PBD::error << _("DummyPort::connect (): invalid (null) port") << endmsg;
1103 if (type () != port->type ()) {
1104 PBD::error << _("DummyPort::connect (): wrong port-type") << endmsg;
1108 if (is_output () && port->is_output ()) {
1109 PBD::error << _("DummyPort::connect (): cannot inter-connect output ports.") << endmsg;
1113 if (is_input () && port->is_input ()) {
1114 PBD::error << _("DummyPort::connect (): cannot inter-connect input ports.") << endmsg;
1119 PBD::error << _("DummyPort::connect (): cannot self-connect ports.") << endmsg;
1123 if (is_connected (port)) {
1124 #if 0 // don't bother to warn about this for now. just ignore it
1125 PBD::error << _("DummyPort::connect (): ports are already connected:")
1126 << " (" << name () << ") -> (" << port->name () << ")"
1132 _connect (port, true);
1137 void DummyPort::_connect (DummyPort *port, bool callback)
1139 _connections.push_back (port);
1141 port->_connect (this, false);
1145 int DummyPort::disconnect (DummyPort *port)
1148 PBD::error << _("DummyPort::disconnect (): invalid (null) port") << endmsg;
1152 if (!is_connected (port)) {
1153 PBD::error << _("DummyPort::disconnect (): ports are not connected:")
1154 << " (" << name () << ") -> (" << port->name () << ")"
1158 _disconnect (port, true);
1162 void DummyPort::_disconnect (DummyPort *port, bool callback)
1164 std::vector<DummyPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1166 assert (it != _connections.end ());
1168 _connections.erase (it);
1171 port->_disconnect (this, false);
1176 void DummyPort::disconnect_all ()
1178 while (!_connections.empty ()) {
1179 _connections.back ()->_disconnect (this, false);
1180 _connections.pop_back ();
1185 DummyPort::is_connected (const DummyPort *port) const
1187 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1190 bool DummyPort::is_physically_connected () const
1192 for (std::vector<DummyPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1193 if ((*it)->is_physical ()) {
1200 /******************************************************************************/
1202 DummyAudioPort::DummyAudioPort (const std::string& name, PortFlags flags)
1203 : DummyPort (name, flags)
1205 memset (_buffer, 0, sizeof (_buffer));
1208 DummyAudioPort::~DummyAudioPort () { }
1210 void* DummyAudioPort::get_buffer (pframes_t n_samples)
1213 std::vector<DummyPort*>::const_iterator it = get_connections ().begin ();
1214 if (it == get_connections ().end ()) {
1215 memset (_buffer, 0, n_samples * sizeof (Sample));
1217 DummyAudioPort const * source = static_cast<const DummyAudioPort*>(*it);
1218 assert (source && source->is_output ());
1219 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1220 while (++it != get_connections ().end ()) {
1221 source = static_cast<const DummyAudioPort*>(*it);
1222 assert (source && source->is_output ());
1223 Sample* dst = buffer ();
1224 const Sample* src = source->const_buffer ();
1225 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1230 } else if (is_output () && is_physical () && is_terminal()) {
1231 memset (_buffer, 0, n_samples * sizeof (Sample));
1237 DummyMidiPort::DummyMidiPort (const std::string& name, PortFlags flags)
1238 : DummyPort (name, flags)
1243 DummyMidiPort::~DummyMidiPort () { }
1245 void* DummyMidiPort::get_buffer (pframes_t /* nframes */)
1249 for (std::vector<DummyPort*>::const_iterator i = get_connections ().begin ();
1250 i != get_connections ().end ();
1252 const DummyMidiBuffer src = static_cast<const DummyMidiPort*>(*i)->const_buffer ();
1253 for (DummyMidiBuffer::const_iterator it = src.begin (); it != src.end (); ++it) {
1254 _buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
1257 std::sort (_buffer.begin (), _buffer.end ());
1258 } else if (is_output () && is_physical () && is_terminal()) {
1264 DummyMidiEvent::DummyMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1266 , _timestamp (timestamp)
1270 _data = (uint8_t*) malloc (size);
1271 memcpy (_data, data, size);
1275 DummyMidiEvent::DummyMidiEvent (const DummyMidiEvent& other)
1276 : _size (other.size ())
1277 , _timestamp (other.timestamp ())
1280 if (other.size () && other.const_data ()) {
1281 _data = (uint8_t*) malloc (other.size ());
1282 memcpy (_data, other.const_data (), other.size ());
1286 DummyMidiEvent::~DummyMidiEvent () {