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 _max_buffer_size * 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;
430 _threads.push_back (thread_id);
435 DummyAudioBackend::join_process_threads ()
439 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
442 if (pthread_join (*i, &status)) {
443 PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
452 DummyAudioBackend::in_process_thread ()
454 for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
456 if (pthread_equal (*i, pthread_self ()) != 0) {
464 DummyAudioBackend::process_thread_count ()
466 return _threads.size ();
470 DummyAudioBackend::update_latencies ()
477 DummyAudioBackend::private_handle () const
483 DummyAudioBackend::my_name () const
485 return _instance_name;
489 DummyAudioBackend::available () const
495 DummyAudioBackend::port_name_size () const
501 DummyAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
503 if (!valid_port (port)) {
504 PBD::error << _("DummyBackend::set_port_name: Invalid Port(s)") << endmsg;
507 return static_cast<DummyPort*>(port)->set_name (_instance_name + ":" + name);
511 DummyAudioBackend::get_port_name (PortEngine::PortHandle port) const
513 if (!valid_port (port)) {
514 PBD::error << _("DummyBackend::get_port_name: Invalid Port(s)") << endmsg;
515 return std::string ();
517 return static_cast<DummyPort*>(port)->name ();
520 PortEngine::PortHandle
521 DummyAudioBackend::get_port_by_name (const std::string& name) const
523 PortHandle port = (PortHandle) find_port (name);
528 DummyAudioBackend::get_ports (
529 const std::string& port_name_pattern,
530 DataType type, PortFlags flags,
531 std::vector<std::string>& port_names) const
535 bool use_regexp = false;
536 if (port_name_pattern.size () > 0) {
537 if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
541 for (size_t i = 0; i < _ports.size (); ++i) {
542 DummyPort* port = _ports[i];
543 if ((port->type () == type) && (port->flags () & flags)) {
544 if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
545 port_names.push_back (port->name ());
551 regfree (&port_regex);
557 DummyAudioBackend::port_data_type (PortEngine::PortHandle port) const
559 if (!valid_port (port)) {
560 return DataType::NIL;
562 return static_cast<DummyPort*>(port)->type ();
565 PortEngine::PortHandle
566 DummyAudioBackend::register_port (
567 const std::string& name,
568 ARDOUR::DataType type,
569 ARDOUR::PortFlags flags)
571 if (name.size () == 0) { return 0; }
572 if (flags & IsPhysical) { return 0; }
573 return add_port (_instance_name + ":" + name, type, flags);
576 PortEngine::PortHandle
577 DummyAudioBackend::add_port (
578 const std::string& name,
579 ARDOUR::DataType type,
580 ARDOUR::PortFlags flags)
582 assert(name.size ());
583 if (find_port (name)) {
584 PBD::error << _("DummyBackend::register_port: Port already exists:")
585 << " (" << name << ")" << endmsg;
588 DummyPort* port = NULL;
590 case DataType::AUDIO:
591 port = new DummyAudioPort (*this, name, flags);
594 port = new DummyMidiPort (*this, name, flags);
597 PBD::error << _("DummyBackend::register_port: Invalid Data Type.") << endmsg;
601 _ports.push_back (port);
607 DummyAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
609 if (!valid_port (port_handle)) {
610 PBD::error << _("DummyBackend::unregister_port: Invalid Port.") << endmsg;
612 DummyPort* port = static_cast<DummyPort*>(port_handle);
613 std::vector<DummyPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<DummyPort*>(port_handle));
614 if (i == _ports.end ()) {
615 PBD::error << _("DummyBackend::unregister_port: Failed to find port") << endmsg;
618 disconnect_all(port_handle);
624 DummyAudioBackend::register_system_ports()
628 const int a_ins = _n_inputs > 0 ? _n_inputs : 8;
629 const int a_out = _n_outputs > 0 ? _n_outputs : 8;
630 const int m_ins = _n_midi_inputs > 0 ? _n_midi_inputs : 2;
631 const int m_out = _n_midi_outputs > 0 ? _n_midi_outputs : 2;
634 lr.min = lr.max = _samples_per_period + _systemic_input_latency;
635 for (int i = 1; i <= a_ins; ++i) {
637 snprintf(tmp, sizeof(tmp), "system:capture_%d", i);
638 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
640 set_latency_range (p, false, lr);
643 lr.min = lr.max = _samples_per_period + _systemic_output_latency;
644 for (int i = 1; i <= a_out; ++i) {
646 snprintf(tmp, sizeof(tmp), "system:playback_%d", i);
647 PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
649 set_latency_range (p, false, lr);
653 lr.min = lr.max = _samples_per_period + _systemic_input_latency;
654 for (int i = 1; i <= m_ins; ++i) {
656 snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", i);
657 PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
659 set_latency_range (p, false, lr);
662 lr.min = lr.max = _samples_per_period + _systemic_output_latency;
663 for (int i = 1; i <= m_out; ++i) {
665 snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", i);
666 PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
668 set_latency_range (p, false, lr);
675 DummyAudioBackend::unregister_system_ports()
678 while (i < _ports.size ()) {
679 DummyPort* port = _ports[i];
680 if (port->is_physical () && port->is_terminal ()) {
681 port->disconnect_all ();
682 _ports.erase (_ports.begin() + i);
690 DummyAudioBackend::connect (const std::string& src, const std::string& dst)
692 DummyPort* src_port = find_port (src);
693 DummyPort* dst_port = find_port (dst);
696 PBD::error << _("DummyBackend::connect: Invalid Source port:")
697 << " (" << src <<")" << endmsg;
701 PBD::error << _("DummyBackend::connect: Invalid Destination port:")
702 << " (" << dst <<")" << endmsg;
705 return src_port->connect (dst_port);
709 DummyAudioBackend::disconnect (const std::string& src, const std::string& dst)
711 DummyPort* src_port = find_port (src);
712 DummyPort* dst_port = find_port (dst);
714 if (!src_port || !dst_port) {
715 PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
718 return src_port->disconnect (dst_port);
722 DummyAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
724 DummyPort* dst_port = find_port (dst);
725 if (!valid_port (src)) {
726 PBD::error << _("DummyBackend::connect: Invalid Source Port Handle") << endmsg;
730 PBD::error << _("DummyBackend::connect: Invalid Destination Port")
731 << " (" << dst << ")" << endmsg;
734 return static_cast<DummyPort*>(src)->connect (dst_port);
738 DummyAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
740 DummyPort* dst_port = find_port (dst);
741 if (!valid_port (src) || !dst_port) {
742 PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
745 return static_cast<DummyPort*>(src)->disconnect (dst_port);
749 DummyAudioBackend::disconnect_all (PortEngine::PortHandle port)
751 if (!valid_port (port)) {
752 PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
755 static_cast<DummyPort*>(port)->disconnect_all ();
760 DummyAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
762 if (!valid_port (port)) {
763 PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
766 return static_cast<DummyPort*>(port)->is_connected ();
770 DummyAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
772 DummyPort* dst_port = find_port (dst);
773 if (!valid_port (src) || !dst_port) {
774 PBD::error << _("DummyBackend::connected_to: Invalid Port") << endmsg;
777 return static_cast<DummyPort*>(src)->is_connected (dst_port);
781 DummyAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
783 if (!valid_port (port)) {
784 PBD::error << _("DummyBackend::physically_connected: Invalid Port") << endmsg;
787 return static_cast<DummyPort*>(port)->is_physically_connected ();
791 DummyAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
793 if (!valid_port (port)) {
794 PBD::error << _("DummyBackend::get_connections: Invalid Port") << endmsg;
798 assert (0 == names.size ());
800 const std::vector<DummyPort*>& connected_ports = static_cast<DummyPort*>(port)->get_connections ();
802 for (std::vector<DummyPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
803 names.push_back ((*i)->name ());
806 return (int)names.size ();
811 DummyAudioBackend::midi_event_get (
812 pframes_t& timestamp,
813 size_t& size, uint8_t** buf, void* port_buffer,
814 uint32_t event_index)
816 assert (buf && port_buffer);
817 DummyMidiBuffer& source = * static_cast<DummyMidiBuffer*>(port_buffer);
818 if (event_index >= source.size ()) {
821 DummyMidiEvent * const event = source[event_index].get ();
823 timestamp = event->timestamp ();
824 size = event->size ();
825 *buf = event->data ();
830 DummyAudioBackend::midi_event_put (
833 const uint8_t* buffer, size_t size)
835 assert (buffer && port_buffer);
836 DummyMidiBuffer& dst = * static_cast<DummyMidiBuffer*>(port_buffer);
837 if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
838 fprintf (stderr, "DummyMidiBuffer: it's too late for this event.\n");
841 dst.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (timestamp, buffer, size)));
846 DummyAudioBackend::get_midi_event_count (void* port_buffer)
848 assert (port_buffer);
849 return static_cast<DummyMidiBuffer*>(port_buffer)->size ();
853 DummyAudioBackend::midi_clear (void* port_buffer)
855 assert (port_buffer);
856 DummyMidiBuffer * buf = static_cast<DummyMidiBuffer*>(port_buffer);
864 DummyAudioBackend::can_monitor_input () const
870 DummyAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
876 DummyAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
882 DummyAudioBackend::monitoring_input (PortEngine::PortHandle)
887 /* Latency management */
890 DummyAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
892 if (!valid_port (port)) {
893 PBD::error << _("DummyPort::set_latency_range (): invalid port.") << endmsg;
895 static_cast<DummyPort*>(port)->set_latency_range (latency_range, for_playback);
899 DummyAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
901 if (!valid_port (port)) {
902 PBD::error << _("DummyPort::get_latency_range (): invalid port.") << endmsg;
908 return static_cast<DummyPort*>(port)->latency_range (for_playback);
911 /* Discovering physical ports */
914 DummyAudioBackend::port_is_physical (PortEngine::PortHandle port) const
916 if (!valid_port (port)) {
917 PBD::error << _("DummyPort::port_is_physical (): invalid port.") << endmsg;
920 return static_cast<DummyPort*>(port)->is_physical ();
924 DummyAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
926 for (size_t i = 0; i < _ports.size (); ++i) {
927 DummyPort* port = _ports[i];
928 if ((port->type () == type) && port->is_input () && port->is_physical ()) {
929 port_names.push_back (port->name ());
935 DummyAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
937 for (size_t i = 0; i < _ports.size (); ++i) {
938 DummyPort* port = _ports[i];
939 if ((port->type () == type) && port->is_output () && port->is_physical ()) {
940 port_names.push_back (port->name ());
946 DummyAudioBackend::n_physical_outputs () const
950 for (size_t i = 0; i < _ports.size (); ++i) {
951 DummyPort* port = _ports[i];
952 if (port->is_output () && port->is_physical ()) {
953 switch (port->type ()) {
954 case DataType::AUDIO: ++n_audio; break;
955 case DataType::MIDI: ++n_midi; break;
961 cc.set (DataType::AUDIO, n_audio);
962 cc.set (DataType::MIDI, n_midi);
967 DummyAudioBackend::n_physical_inputs () const
971 for (size_t i = 0; i < _ports.size (); ++i) {
972 DummyPort* port = _ports[i];
973 if (port->is_input () && port->is_physical ()) {
974 switch (port->type ()) {
975 case DataType::AUDIO: ++n_audio; break;
976 case DataType::MIDI: ++n_midi; break;
982 cc.set (DataType::AUDIO, n_audio);
983 cc.set (DataType::MIDI, n_midi);
987 /* Getting access to the data buffer for a port */
990 DummyAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
993 assert (valid_port (port));
994 return static_cast<DummyPort*>(port)->get_buffer (nframes);
999 DummyAudioBackend::main_process_thread ()
1001 AudioEngine::thread_init_callback (this);
1003 _processed_samples = 0;
1005 uint64_t clock1, clock2;
1006 clock1 = g_get_monotonic_time();
1008 if (engine.process_callback (_samples_per_period)) {
1011 _processed_samples += _samples_per_period;
1012 if (!_freewheeling) {
1013 clock2 = g_get_monotonic_time();
1014 const int64_t elapsed_time = clock2 - clock1;
1015 const int64_t nomial_time = 1e6 * _samples_per_period / _samplerate;
1016 _dsp_load = elapsed_time / (float) nomial_time;
1017 if (elapsed_time < nomial_time) {
1018 Glib::usleep (nomial_time - elapsed_time);
1020 Glib::usleep (100); // don't hog cpu
1024 Glib::usleep (100); // don't hog cpu
1026 clock1 = g_get_monotonic_time();
1028 if (!pthread_mutex_trylock (&_port_callback_mutex)) {
1029 while (!_port_connection_queue.empty ()) {
1030 PortConnectData *c = _port_connection_queue.back ();
1031 manager.connect_callback (c->a, c->b, c->c);
1032 _port_connection_queue.pop_back ();
1035 pthread_mutex_unlock (&_port_callback_mutex);
1044 /******************************************************************************/
1046 static boost::shared_ptr<DummyAudioBackend> _instance;
1048 static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
1049 static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
1050 static int deinstantiate ();
1051 static bool already_configured ();
1053 static ARDOUR::AudioBackendInfo _descriptor = {
1061 static boost::shared_ptr<AudioBackend>
1062 backend_factory (AudioEngine& e)
1065 _instance.reset (new DummyAudioBackend (e, _descriptor));
1071 instantiate (const std::string& arg1, const std::string& /* arg2 */)
1073 s_instance_name = arg1;
1085 already_configured ()
1090 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
1092 return &_descriptor;
1096 /******************************************************************************/
1097 DummyPort::DummyPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
1098 : _dummy_backend (b)
1102 _capture_latency_range.min = 0;
1103 _capture_latency_range.max = 0;
1104 _playback_latency_range.min = 0;
1105 _playback_latency_range.max = 0;
1108 DummyPort::~DummyPort () {
1113 int DummyPort::connect (DummyPort *port)
1116 PBD::error << _("DummyPort::connect (): invalid (null) port") << endmsg;
1120 if (type () != port->type ()) {
1121 PBD::error << _("DummyPort::connect (): wrong port-type") << endmsg;
1125 if (is_output () && port->is_output ()) {
1126 PBD::error << _("DummyPort::connect (): cannot inter-connect output ports.") << endmsg;
1130 if (is_input () && port->is_input ()) {
1131 PBD::error << _("DummyPort::connect (): cannot inter-connect input ports.") << endmsg;
1136 PBD::error << _("DummyPort::connect (): cannot self-connect ports.") << endmsg;
1140 if (is_connected (port)) {
1141 #if 0 // don't bother to warn about this for now. just ignore it
1142 PBD::error << _("DummyPort::connect (): ports are already connected:")
1143 << " (" << name () << ") -> (" << port->name () << ")"
1149 _connect (port, true);
1154 void DummyPort::_connect (DummyPort *port, bool callback)
1156 _connections.push_back (port);
1158 port->_connect (this, false);
1159 _dummy_backend.port_connect_callback (name(), port->name(), true);
1163 int DummyPort::disconnect (DummyPort *port)
1166 PBD::error << _("DummyPort::disconnect (): invalid (null) port") << endmsg;
1170 if (!is_connected (port)) {
1171 PBD::error << _("DummyPort::disconnect (): ports are not connected:")
1172 << " (" << name () << ") -> (" << port->name () << ")"
1176 _disconnect (port, true);
1180 void DummyPort::_disconnect (DummyPort *port, bool callback)
1182 std::vector<DummyPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
1184 assert (it != _connections.end ());
1186 _connections.erase (it);
1189 port->_disconnect (this, false);
1190 _dummy_backend.port_connect_callback (name(), port->name(), false);
1195 void DummyPort::disconnect_all ()
1197 while (!_connections.empty ()) {
1198 _connections.back ()->_disconnect (this, false);
1199 _dummy_backend.port_connect_callback (name(), _connections.back ()->name(), false);
1200 _connections.pop_back ();
1205 DummyPort::is_connected (const DummyPort *port) const
1207 return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
1210 bool DummyPort::is_physically_connected () const
1212 for (std::vector<DummyPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
1213 if ((*it)->is_physical ()) {
1220 /******************************************************************************/
1222 DummyAudioPort::DummyAudioPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
1223 : DummyPort (b, name, flags)
1225 memset (_buffer, 0, sizeof (_buffer));
1228 DummyAudioPort::~DummyAudioPort () { }
1230 void* DummyAudioPort::get_buffer (pframes_t n_samples)
1233 std::vector<DummyPort*>::const_iterator it = get_connections ().begin ();
1234 if (it == get_connections ().end ()) {
1235 memset (_buffer, 0, n_samples * sizeof (Sample));
1237 DummyAudioPort const * source = static_cast<const DummyAudioPort*>(*it);
1238 assert (source && source->is_output ());
1239 memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
1240 while (++it != get_connections ().end ()) {
1241 source = static_cast<const DummyAudioPort*>(*it);
1242 assert (source && source->is_output ());
1243 Sample* dst = buffer ();
1244 const Sample* src = source->const_buffer ();
1245 for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
1250 } else if (is_output () && is_physical () && is_terminal()) {
1251 memset (_buffer, 0, n_samples * sizeof (Sample));
1257 DummyMidiPort::DummyMidiPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
1258 : DummyPort (b, name, flags)
1263 DummyMidiPort::~DummyMidiPort () { }
1265 void* DummyMidiPort::get_buffer (pframes_t /* nframes */)
1269 for (std::vector<DummyPort*>::const_iterator i = get_connections ().begin ();
1270 i != get_connections ().end ();
1272 const DummyMidiBuffer src = static_cast<const DummyMidiPort*>(*i)->const_buffer ();
1273 for (DummyMidiBuffer::const_iterator it = src.begin (); it != src.end (); ++it) {
1274 _buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
1277 std::sort (_buffer.begin (), _buffer.end ());
1278 } else if (is_output () && is_physical () && is_terminal()) {
1284 DummyMidiEvent::DummyMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
1286 , _timestamp (timestamp)
1290 _data = (uint8_t*) malloc (size);
1291 memcpy (_data, data, size);
1295 DummyMidiEvent::DummyMidiEvent (const DummyMidiEvent& other)
1296 : _size (other.size ())
1297 , _timestamp (other.timestamp ())
1300 if (other.size () && other.const_data ()) {
1301 _data = (uint8_t*) malloc (other.size ());
1302 memcpy (_data, other.const_data (), other.size ());
1306 DummyMidiEvent::~DummyMidiEvent () {