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"
27 #include "pbd/error.h"
28 #include "ardour/port_manager.h"
31 using namespace ARDOUR;
33 static std::string s_instance_name;
34 size_t DummyAudioBackend::_max_buffer_size = 8192;
36 DummyAudioBackend::DummyAudioBackend (AudioEngine& e, AudioBackendInfo& info)
37 : AudioBackend (e, info)
39 , _freewheeling (false)
41 , _samples_per_period (1024)
47 , _systemic_input_latency (0)
48 , _systemic_output_latency (0)
49 , _processed_samples (0)
51 _instance_name = s_instance_name;
52 pthread_mutex_init (&_port_callback_mutex, 0);
55 DummyAudioBackend::~DummyAudioBackend ()
57 pthread_mutex_destroy (&_port_callback_mutex);
60 /* AUDIOBACKEND API */
63 DummyAudioBackend::name () const
69 DummyAudioBackend::is_realtime () const
74 std::vector<AudioBackend::DeviceStatus>
75 DummyAudioBackend::enumerate_devices () const
77 std::vector<AudioBackend::DeviceStatus> s;
78 s.push_back (DeviceStatus (_("Dummy"), true));
83 DummyAudioBackend::available_sample_rates (const std::string&) const
85 std::vector<float> sr;
86 sr.push_back (8000.0);
87 sr.push_back (22050.0);
88 sr.push_back (24000.0);
89 sr.push_back (44100.0);
90 sr.push_back (48000.0);
91 sr.push_back (88200.0);
92 sr.push_back (96000.0);
93 sr.push_back (176400.0);
94 sr.push_back (192000.0);
99 DummyAudioBackend::available_buffer_sizes (const std::string&) const
101 std::vector<uint32_t> bs;
118 DummyAudioBackend::available_input_channel_count (const std::string&) const
124 DummyAudioBackend::available_output_channel_count (const std::string&) const
130 DummyAudioBackend::can_change_sample_rate_when_running () const
136 DummyAudioBackend::can_change_buffer_size_when_running () const
142 DummyAudioBackend::set_device_name (const std::string&)
148 DummyAudioBackend::set_sample_rate (float sr)
150 if (sr <= 0) { return -1; }
152 engine.sample_rate_change (sr);
157 DummyAudioBackend::set_buffer_size (uint32_t bs)
159 if (bs <= 0 || bs >= _max_buffer_size) {
162 _samples_per_period = bs;
163 engine.buffer_size_change (bs);
168 DummyAudioBackend::set_interleaved (bool yn)
170 if (!yn) { return 0; }
175 DummyAudioBackend::set_input_channels (uint32_t cc)
182 DummyAudioBackend::set_output_channels (uint32_t cc)
189 DummyAudioBackend::set_systemic_input_latency (uint32_t sl)
191 _systemic_input_latency = sl;
196 DummyAudioBackend::set_systemic_output_latency (uint32_t sl)
198 _systemic_output_latency = sl;
202 /* Retrieving parameters */
204 DummyAudioBackend::device_name () const
206 return _("Dummy Device");
210 DummyAudioBackend::sample_rate () const
216 DummyAudioBackend::buffer_size () const
218 return _samples_per_period;
222 DummyAudioBackend::interleaved () const
228 DummyAudioBackend::input_channels () const
234 DummyAudioBackend::output_channels () const
240 DummyAudioBackend::systemic_input_latency () const
242 return _systemic_input_latency;
246 DummyAudioBackend::systemic_output_latency () const
248 return _systemic_output_latency;
252 std::vector<std::string>
253 DummyAudioBackend::enumerate_midi_options () const
255 std::vector<std::string> m;
256 m.push_back (_("1 in, 1 out"));
257 m.push_back (_("2 in, 2 out"));
258 m.push_back (_("8 in, 8 out"));
263 DummyAudioBackend::set_midi_option (const std::string& opt)
265 if (opt == _("1 in, 1 out")) {
266 _n_midi_inputs = _n_midi_outputs = 1;
268 else if (opt == _("2 in, 2 out")) {
269 _n_midi_inputs = _n_midi_outputs = 2;
271 else if (opt == _("8 in, 8 out")) {
272 _n_midi_inputs = _n_midi_outputs = 8;
275 _n_midi_inputs = _n_midi_outputs = 0;
281 DummyAudioBackend::midi_option () const
288 static void * pthread_process (void *arg)
290 DummyAudioBackend *d = static_cast<DummyAudioBackend *>(arg);
291 d->main_process_thread ();
297 DummyAudioBackend::_start (bool /*for_latency_measurement*/)
300 PBD::error << _("DummyAudioBackend: already active.") << endmsg;
305 PBD::warning << _("DummyAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
309 if (register_system_ports()) {
310 PBD::error << _("DummyAudioBackend: failed to register system ports.") << endmsg;
314 if (engine.reestablish_ports ()) {
315 PBD::error << _("DummyAudioBackend: Could not re-establish ports.") << endmsg;
320 engine.buffer_size_change (_samples_per_period);
321 engine.reconnect_ports ();
323 if (pthread_create (&_main_thread, NULL, pthread_process, this)) {
324 PBD::error << _("DummyAudioBackend: cannot start.") << endmsg;
328 while (!_running && --timeout > 0) { Glib::usleep (1000); }
330 if (timeout == 0 || !_running) {
331 PBD::error << _("DummyAudioBackend: failed to start process thread.") << endmsg;
339 DummyAudioBackend::stop ()
347 if (pthread_join (_main_thread, &status)) {
348 PBD::error << _("DummyAudioBackend: failed to terminate.") << endmsg;
351 unregister_system_ports();
356 DummyAudioBackend::freewheel (bool onoff)
358 if (onoff == _freewheeling) {
361 _freewheeling = onoff;
362 engine.freewheel_callback (onoff);
367 DummyAudioBackend::dsp_load () const
369 return 100.f * _dsp_load;
373 DummyAudioBackend::raw_buffer_size (DataType t)
376 case DataType::AUDIO:
377 return _samples_per_period * sizeof(Sample);
379 return _max_buffer_size; // XXX not really limited
386 DummyAudioBackend::sample_time ()
388 return _processed_samples;
392 DummyAudioBackend::sample_time_at_cycle_start ()
394 return _processed_samples;
398 DummyAudioBackend::samples_since_cycle_start ()
405 DummyAudioBackend::dummy_process_thread (void *arg)
407 ThreadData* td = reinterpret_cast<ThreadData*> (arg);
408 boost::function<void ()> f = td->f;
415 DummyAudioBackend::create_process_thread (boost::function<void()> func)
419 size_t stacksize = 100000;
421 pthread_attr_init (&attr);
422 pthread_attr_setstacksize (&attr, stacksize);
423 ThreadData* td = new ThreadData (this, func, stacksize);
425 if (pthread_create (&thread_id, &attr, dummy_process_thread, td)) {
426 PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
427 pthread_attr_destroy (&attr);
430 pthread_attr_destroy (&attr);
432 _threads.push_back (thread_id);
437 DummyAudioBackend::join_process_threads ()
441 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
444 if (pthread_join (*i, &status)) {
445 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
454 DummyAudioBackend::in_process_thread ()
456 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
458 if (pthread_equal (*i, pthread_self ()) != 0) {
466 DummyAudioBackend::process_thread_count ()
468 return _threads.size ();
472 DummyAudioBackend::update_latencies ()
479 DummyAudioBackend::private_handle () const
485 DummyAudioBackend::my_name () const
487 return _instance_name;
491 DummyAudioBackend::available () const
497 DummyAudioBackend::port_name_size () const
503 DummyAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
505 if (!valid_port (port)) {
506 PBD::error << _("DummyBackend::set_port_name: Invalid Port(s)") << endmsg;
509 return static_cast<DummyPort*>(port)->set_name (_instance_name + ":" + name);
513 DummyAudioBackend::get_port_name (PortEngine::PortHandle port) const
515 if (!valid_port (port)) {
516 PBD::error << _("DummyBackend::get_port_name: Invalid Port(s)") << endmsg;
517 return std::string ();
519 return static_cast<DummyPort*>(port)->name ();
522 PortEngine::PortHandle
523 DummyAudioBackend::get_port_by_name (const std::string& name) const
525 PortHandle port = (PortHandle) find_port (name);
530 DummyAudioBackend::get_ports (
531 const std::string& port_name_pattern,
532 DataType type, PortFlags flags,
533 std::vector<std::string>& port_names) const
537 bool use_regexp = false;
538 if (port_name_pattern.size () > 0) {
539 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
543 for (size_t i = 0; i < _ports.size (); ++i) {
544 DummyPort* port = _ports[i];
545 if ((port->type () == type) && (port->flags () & flags)) {
546 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
547 port_names.push_back (port->name ());
553 regfree (&port_regex);
559 DummyAudioBackend::port_data_type (PortEngine::PortHandle port) const
561 if (!valid_port (port)) {
562 return DataType::NIL;
564 return static_cast<DummyPort*>(port)->type ();
567 PortEngine::PortHandle
568 DummyAudioBackend::register_port (
569 const std::string& name,
570 ARDOUR::DataType type,
571 ARDOUR::PortFlags flags)
573 if (name.size () == 0) { return 0; }
574 if (flags & IsPhysical) { return 0; }
575 return add_port (_instance_name + ":" + name, type, flags);
578 PortEngine::PortHandle
579 DummyAudioBackend::add_port (
580 const std::string& name,
581 ARDOUR::DataType type,
582 ARDOUR::PortFlags flags)
584 assert(name.size ());
585 if (find_port (name)) {
586 PBD::error << _("DummyBackend::register_port: Port already exists:")
587 << " (" << name << ")" << endmsg;
590 DummyPort* port = NULL;
592 case DataType::AUDIO:
593 port = new DummyAudioPort (*this, name, flags);
596 port = new DummyMidiPort (*this, name, flags);
599 PBD::error << _("DummyBackend::register_port: Invalid Data Type.") << endmsg;
603 _ports.push_back (port);
609 DummyAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
611 if (!valid_port (port_handle)) {
612 PBD::error << _("DummyBackend::unregister_port: Invalid Port.") << endmsg;
614 DummyPort* port = static_cast<DummyPort*>(port_handle);
615 std::vector<DummyPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<DummyPort*>(port_handle));
616 if (i == _ports.end ()) {
617 PBD::error << _("DummyBackend::unregister_port: Failed to find port") << endmsg;
620 disconnect_all(port_handle);
626 DummyAudioBackend::register_system_ports()
630 const int a_ins = _n_inputs > 0 ? _n_inputs : 8;
631 const int a_out = _n_outputs > 0 ? _n_outputs : 8;
632 const int m_ins = _n_midi_inputs > 0 ? _n_midi_inputs : 2;
633 const int m_out = _n_midi_outputs > 0 ? _n_midi_outputs : 2;
636 lr.min = lr.max = _samples_per_period + _systemic_input_latency;
637 for (int i = 1; i <= a_ins; ++i) {
639 snprintf(tmp, sizeof(tmp), "system:capture_%d", i);
640 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
642 set_latency_range (p, false, lr);
645 lr.min = lr.max = _samples_per_period + _systemic_output_latency;
646 for (int i = 1; i <= a_out; ++i) {
648 snprintf(tmp, sizeof(tmp), "system:playback_%d", i);
649 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
651 set_latency_range (p, false, lr);
655 lr.min = lr.max = _samples_per_period + _systemic_input_latency;
656 for (int i = 1; i <= m_ins; ++i) {
658 snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", i);
659 PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
661 set_latency_range (p, false, lr);
664 lr.min = lr.max = _samples_per_period + _systemic_output_latency;
665 for (int i = 1; i <= m_out; ++i) {
667 snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", i);
668 PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
670 set_latency_range (p, false, lr);
677 DummyAudioBackend::unregister_system_ports()
680 while (i < _ports.size ()) {
681 DummyPort* port = _ports[i];
682 if (port->is_physical () && port->is_terminal ()) {
683 port->disconnect_all ();
684 _ports.erase (_ports.begin() + i);
692 DummyAudioBackend::connect (const std::string& src, const std::string& dst)
694 DummyPort* src_port = find_port (src);
695 DummyPort* dst_port = find_port (dst);
698 PBD::error << _("DummyBackend::connect: Invalid Source port:")
699 << " (" << src <<")" << endmsg;
703 PBD::error << _("DummyBackend::connect: Invalid Destination port:")
704 << " (" << dst <<")" << endmsg;
707 return src_port->connect (dst_port);
711 DummyAudioBackend::disconnect (const std::string& src, const std::string& dst)
713 DummyPort* src_port = find_port (src);
714 DummyPort* dst_port = find_port (dst);
716 if (!src_port || !dst_port) {
717 PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
720 return src_port->disconnect (dst_port);
724 DummyAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
726 DummyPort* dst_port = find_port (dst);
727 if (!valid_port (src)) {
728 PBD::error << _("DummyBackend::connect: Invalid Source Port Handle") << endmsg;
732 PBD::error << _("DummyBackend::connect: Invalid Destination Port")
733 << " (" << dst << ")" << endmsg;
736 return static_cast<DummyPort*>(src)->connect (dst_port);
740 DummyAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
742 DummyPort* dst_port = find_port (dst);
743 if (!valid_port (src) || !dst_port) {
744 PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
747 return static_cast<DummyPort*>(src)->disconnect (dst_port);
751 DummyAudioBackend::disconnect_all (PortEngine::PortHandle port)
753 if (!valid_port (port)) {
754 PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
757 static_cast<DummyPort*>(port)->disconnect_all ();
762 DummyAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
764 if (!valid_port (port)) {
765 PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
768 return static_cast<DummyPort*>(port)->is_connected ();
772 DummyAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
774 DummyPort* dst_port = find_port (dst);
775 if (!valid_port (src) || !dst_port) {
776 PBD::error << _("DummyBackend::connected_to: Invalid Port") << endmsg;
779 return static_cast<DummyPort*>(src)->is_connected (dst_port);
783 DummyAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
785 if (!valid_port (port)) {
786 PBD::error << _("DummyBackend::physically_connected: Invalid Port") << endmsg;
789 return static_cast<DummyPort*>(port)->is_physically_connected ();
793 DummyAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
795 if (!valid_port (port)) {
796 PBD::error << _("DummyBackend::get_connections: Invalid Port") << endmsg;
800 assert (0 == names.size ());
802 const std::vector<DummyPort*>& connected_ports = static_cast<DummyPort*>(port)->get_connections ();
804 for (std::vector<DummyPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
805 names.push_back ((*i)->name ());
808 return (int)names.size ();
813 DummyAudioBackend::midi_event_get (
814 pframes_t& timestamp,
815 size_t& size, uint8_t** buf, void* port_buffer,
816 uint32_t event_index)
818 assert (buf && port_buffer);
819 DummyMidiBuffer& source = * static_cast<DummyMidiBuffer*>(port_buffer);
820 if (event_index >= source.size ()) {
823 DummyMidiEvent * const event = source[event_index].get ();
825 timestamp = event->timestamp ();
826 size = event->size ();
827 *buf = event->data ();
832 DummyAudioBackend::midi_event_put (
835 const uint8_t* buffer, size_t size)
837 assert (buffer && port_buffer);
838 DummyMidiBuffer& dst = * static_cast<DummyMidiBuffer*>(port_buffer);
839 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
840 fprintf (stderr, "DummyMidiBuffer: it's too late for this event.\n");
843 dst.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (timestamp, buffer, size)));
848 DummyAudioBackend::get_midi_event_count (void* port_buffer)
850 assert (port_buffer);
851 return static_cast<DummyMidiBuffer*>(port_buffer)->size ();
855 DummyAudioBackend::midi_clear (void* port_buffer)
857 assert (port_buffer);
858 DummyMidiBuffer * buf = static_cast<DummyMidiBuffer*>(port_buffer);
866 DummyAudioBackend::can_monitor_input () const
872 DummyAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
878 DummyAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
884 DummyAudioBackend::monitoring_input (PortEngine::PortHandle)
889 /* Latency management */
892 DummyAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
894 if (!valid_port (port)) {
895 PBD::error << _("DummyPort::set_latency_range (): invalid port.") << endmsg;
897 static_cast<DummyPort*>(port)->set_latency_range (latency_range, for_playback);
901 DummyAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
903 if (!valid_port (port)) {
904 PBD::error << _("DummyPort::get_latency_range (): invalid port.") << endmsg;
910 return static_cast<DummyPort*>(port)->latency_range (for_playback);
913 /* Discovering physical ports */
916 DummyAudioBackend::port_is_physical (PortEngine::PortHandle port) const
918 if (!valid_port (port)) {
919 PBD::error << _("DummyPort::port_is_physical (): invalid port.") << endmsg;
922 return static_cast<DummyPort*>(port)->is_physical ();
926 DummyAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
928 for (size_t i = 0; i < _ports.size (); ++i) {
929 DummyPort* port = _ports[i];
930 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
931 port_names.push_back (port->name ());
937 DummyAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
939 for (size_t i = 0; i < _ports.size (); ++i) {
940 DummyPort* port = _ports[i];
941 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
942 port_names.push_back (port->name ());
948 DummyAudioBackend::n_physical_outputs () const
952 for (size_t i = 0; i < _ports.size (); ++i) {
953 DummyPort* port = _ports[i];
954 if (port->is_output () && port->is_physical ()) {
955 switch (port->type ()) {
956 case DataType::AUDIO: ++n_audio; break;
957 case DataType::MIDI: ++n_midi; break;
963 cc.set (DataType::AUDIO, n_audio);
964 cc.set (DataType::MIDI, n_midi);
969 DummyAudioBackend::n_physical_inputs () const
973 for (size_t i = 0; i < _ports.size (); ++i) {
974 DummyPort* port = _ports[i];
975 if (port->is_input () && port->is_physical ()) {
976 switch (port->type ()) {
977 case DataType::AUDIO: ++n_audio; break;
978 case DataType::MIDI: ++n_midi; break;
984 cc.set (DataType::AUDIO, n_audio);
985 cc.set (DataType::MIDI, n_midi);
989 /* Getting access to the data buffer for a port */
992 DummyAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
995 assert (valid_port (port));
996 return static_cast<DummyPort*>(port)->get_buffer (nframes);
1001 DummyAudioBackend::main_process_thread ()
1003 AudioEngine::thread_init_callback (this);
1005 _processed_samples = 0;
1007 uint64_t clock1, clock2;
1008 clock1 = g_get_monotonic_time();
1010 if (engine.process_callback (_samples_per_period)) {
1013 _processed_samples += _samples_per_period;
1014 if (!_freewheeling) {
1015 clock2 = g_get_monotonic_time();
1016 const int64_t elapsed_time = clock2 - clock1;
1017 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1018 _dsp_load = elapsed_time / (float) nomial_time;
1019 if (elapsed_time < nomial_time) {
1020 Glib::usleep (nomial_time - elapsed_time);
1022 Glib::usleep (100); // don't hog cpu
1026 Glib::usleep (100); // don't hog cpu
1028 clock1 = g_get_monotonic_time();
1030 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1031 while (!_port_connection_queue.empty ()) {
1032 PortConnectData *c = _port_connection_queue.back ();
1033 manager.connect_callback (c->a, c->b, c->c);
1034 _port_connection_queue.pop_back ();
1037 pthread_mutex_unlock (&_port_callback_mutex);
1046 /******************************************************************************/
1048 static boost::shared_ptr<DummyAudioBackend> _instance;
1050 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1051 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1052 static int deinstantiate ();
1053 static bool already_configured ();
1055 static ARDOUR::AudioBackendInfo _descriptor = {
1063 static boost::shared_ptr<AudioBackend>
1064 backend_factory (AudioEngine& e)
1067 _instance.reset (new DummyAudioBackend (e, _descriptor));
1073 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1075 s_instance_name = arg1;
1087 already_configured ()
1092 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1094 return &_descriptor;
1098 /******************************************************************************/
1099 DummyPort::DummyPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
1100 : _dummy_backend (b)
1104 _capture_latency_range.min = 0;
1105 _capture_latency_range.max = 0;
1106 _playback_latency_range.min = 0;
1107 _playback_latency_range.max = 0;
1110 DummyPort::~DummyPort () {
1115 int DummyPort::connect (DummyPort *port)
1118 PBD::error << _("DummyPort::connect (): invalid (null) port") << endmsg;
1122 if (type () != port->type ()) {
1123 PBD::error << _("DummyPort::connect (): wrong port-type") << endmsg;
1127 if (is_output () && port->is_output ()) {
1128 PBD::error << _("DummyPort::connect (): cannot inter-connect output ports.") << endmsg;
1132 if (is_input () && port->is_input ()) {
1133 PBD::error << _("DummyPort::connect (): cannot inter-connect input ports.") << endmsg;
1138 PBD::error << _("DummyPort::connect (): cannot self-connect ports.") << endmsg;
1142 if (is_connected (port)) {
1143 #if 0 // don't bother to warn about this for now. just ignore it
1144 PBD::error << _("DummyPort::connect (): ports are already connected:")
1145 << " (" << name () << ") -> (" << port->name () << ")"
1151 _connect (port, true);
1156 void DummyPort::_connect (DummyPort *port, bool callback)
1158 _connections.push_back (port);
1160 port->_connect (this, false);
1161 _dummy_backend.port_connect_callback (name(), port->name(), true);
1165 int DummyPort::disconnect (DummyPort *port)
1168 PBD::error << _("DummyPort::disconnect (): invalid (null) port") << endmsg;
1172 if (!is_connected (port)) {
1173 PBD::error << _("DummyPort::disconnect (): ports are not connected:")
1174 << " (" << name () << ") -> (" << port->name () << ")"
1178 _disconnect (port, true);
1182 void DummyPort::_disconnect (DummyPort *port, bool callback)
1184 std::vector<DummyPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1186 assert (it != _connections.end ());
1188 _connections.erase (it);
1191 port->_disconnect (this, false);
1192 _dummy_backend.port_connect_callback (name(), port->name(), false);
1197 void DummyPort::disconnect_all ()
1199 while (!_connections.empty ()) {
1200 _connections.back ()->_disconnect (this, false);
1201 _dummy_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1202 _connections.pop_back ();
1207 DummyPort::is_connected (const DummyPort *port) const
1209 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1212 bool DummyPort::is_physically_connected () const
1214 for (std::vector<DummyPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1215 if ((*it)->is_physical ()) {
1222 /******************************************************************************/
1224 DummyAudioPort::DummyAudioPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
1225 : DummyPort (b, name, flags)
1227 memset (_buffer, 0, sizeof (_buffer));
1230 DummyAudioPort::~DummyAudioPort () { }
1232 void* DummyAudioPort::get_buffer (pframes_t n_samples)
1235 std::vector<DummyPort*>::const_iterator it = get_connections ().begin ();
1236 if (it == get_connections ().end ()) {
1237 memset (_buffer, 0, n_samples * sizeof (Sample));
1239 DummyAudioPort const * source = static_cast<const DummyAudioPort*>(*it);
1240 assert (source && source->is_output ());
1241 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1242 while (++it != get_connections ().end ()) {
1243 source = static_cast<const DummyAudioPort*>(*it);
1244 assert (source && source->is_output ());
1245 Sample* dst = buffer ();
1246 const Sample* src = source->const_buffer ();
1247 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1252 } else if (is_output () && is_physical () && is_terminal()) {
1253 memset (_buffer, 0, n_samples * sizeof (Sample));
1259 DummyMidiPort::DummyMidiPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
1260 : DummyPort (b, name, flags)
1265 DummyMidiPort::~DummyMidiPort () { }
1267 void* DummyMidiPort::get_buffer (pframes_t /* nframes */)
1271 for (std::vector<DummyPort*>::const_iterator i = get_connections ().begin ();
1272 i != get_connections ().end ();
1274 const DummyMidiBuffer src = static_cast<const DummyMidiPort*>(*i)->const_buffer ();
1275 for (DummyMidiBuffer::const_iterator it = src.begin (); it != src.end (); ++it) {
1276 _buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
1279 std::sort (_buffer.begin (), _buffer.end ());
1280 } else if (is_output () && is_physical () && is_terminal()) {
1286 DummyMidiEvent::DummyMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1288 , _timestamp (timestamp)
1292 _data = (uint8_t*) malloc (size);
1293 memcpy (_data, data, size);
1297 DummyMidiEvent::DummyMidiEvent (const DummyMidiEvent& other)
1298 : _size (other.size ())
1299 , _timestamp (other.timestamp ())
1302 if (other.size () && other.const_data ()) {
1303 _data = (uint8_t*) malloc (other.size ());
1304 memcpy (_data, other.const_data (), other.size ());
1308 DummyMidiEvent::~DummyMidiEvent () {