diff options
-rw-r--r-- | gtk2_ardour/ardev_common.sh.in | 2 | ||||
-rw-r--r-- | libs/backends/asio/asio_backend.cc | 1839 | ||||
-rw-r--r-- | libs/backends/asio/asio_backend.h | 434 | ||||
-rw-r--r-- | libs/backends/asio/rt_thread.h | 55 | ||||
-rw-r--r-- | libs/backends/asio/wscript | 33 |
5 files changed, 2362 insertions, 1 deletions
diff --git a/gtk2_ardour/ardev_common.sh.in b/gtk2_ardour/ardev_common.sh.in index 9fd9531eef..fc287e16ba 100644 --- a/gtk2_ardour/ardev_common.sh.in +++ b/gtk2_ardour/ardev_common.sh.in @@ -17,7 +17,7 @@ export ARDOUR_DATA_PATH=$TOP:$TOP/build:$TOP/gtk2_ardour:$TOP/build/gtk2_ardour: export ARDOUR_MIDIMAPS_PATH=$TOP/midi_maps:. export ARDOUR_MCP_PATH=$TOP/mcp:. export ARDOUR_EXPORT_FORMATS_PATH=$TOP/export:. -export ARDOUR_BACKEND_PATH=$libs/backends/jack:$libs/backends/wavesaudio:$libs/backends/dummy:$libs/backends/alsa:$libs/backends/coreaudio:$libs/backends/portaudio +export ARDOUR_BACKEND_PATH=$libs/backends/jack:$libs/backends/wavesaudio:$libs/backends/dummy:$libs/backends/alsa:$libs/backends/coreaudio:$libs/backends/portaudio:$libs/backends/asio export ARDOUR_TEST_PATH=$TOP/libs/ardour/test/data export PBD_TEST_PATH=$TOP/libs/pbd/test export EVORAL_TEST_PATH=$TOP/libs/evoral/test/testdata diff --git a/libs/backends/asio/asio_backend.cc b/libs/backends/asio/asio_backend.cc new file mode 100644 index 0000000000..8d546ca582 --- /dev/null +++ b/libs/backends/asio/asio_backend.cc @@ -0,0 +1,1839 @@ +/* + * Copyright (C) 2014 Robin Gareus <robin@gareus.org> + * Copyright (C) 2013 Paul Davis + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <regex.h> +#include <sys/mman.h> +#include <sys/time.h> + +#include <glibmm.h> + +#include "asio_backend.h" +#include "rt_thread.h" + +#include "pbd/compose.h" +#include "pbd/error.h" +#include "pbd/file_utils.h" +#include "ardour/filesystem_paths.h" +#include "ardour/port_manager.h" +#include "i18n.h" + +using namespace ARDOUR; + +static std::string s_instance_name; +size_t ASIOBackend::_max_buffer_size = 8192; +std::vector<std::string> ASIOBackend::_midi_options; +std::vector<AudioBackend::DeviceStatus> ASIOBackend::_audio_device_status; + + +/* static class instance access */ +static void hw_changed_callback_ptr (void *arg) +{ + ASIOBackend *d = static_cast<ASIOBackend*> (arg); + d->hw_changed_callback(); +} + +static void error_callback_ptr (void *arg) +{ + ASIOBackend *d = static_cast<ASIOBackend*> (arg); + d->error_callback(); +} + +static void xrun_callback_ptr (void *arg) +{ + ASIOBackend *d = static_cast<ASIOBackend*> (arg); + d->xrun_callback(); +} + +static void buffer_size_callback_ptr (void *arg) +{ + ASIOBackend *d = static_cast<ASIOBackend*> (arg); + d->buffer_size_callback(); +} + +static void sample_rate_callback_ptr (void *arg) +{ + ASIOBackend *d = static_cast<ASIOBackend*> (arg); + d->sample_rate_callback(); +} + + +ASIOBackend::ASIOBackend (AudioEngine& e, AudioBackendInfo& info) + : AudioBackend (e, info) + , _run (false) + , _active_cb (false) + , _active_fw (false) + , _freewheeling (false) + , _freewheel (false) + , _freewheel_ack (false) + , _reinit_thread_callback (false) + , _measure_latency (false) + , _last_process_start (0) + , _audio_device("") + , _midi_driver_option(_("None")) + , _samplerate (48000) + , _samples_per_period (1024) + , _n_inputs (0) + , _n_outputs (0) + , _systemic_audio_input_latency (0) + , _systemic_audio_output_latency (0) + , _dsp_load (0) + , _processed_samples (0) + , _port_change_flag (false) +{ + _instance_name = s_instance_name; + pthread_mutex_init (&_port_callback_mutex, 0); + pthread_mutex_init (&_process_callback_mutex, 0); + pthread_mutex_init (&_freewheel_mutex, 0); + pthread_cond_init (&_freewheel_signal, 0); + +#if 0 // TODO + //_pcmio = new ASIOPCM (); + //_midiio = new WindowsMidiIo (); + + _pcmio->set_hw_changed_callback (hw_changed_callback_ptr, this); + _pcmio->discover(); +#endif +} + +ASIOBackend::~ASIOBackend () +{ +#if 0 + delete _pcmio; _pcmio = 0; // TODO + delete _midiio; _midiio = 0; // TODO +#endif + pthread_mutex_destroy (&_port_callback_mutex); + pthread_mutex_destroy (&_process_callback_mutex); + pthread_mutex_destroy (&_freewheel_mutex); + pthread_cond_destroy (&_freewheel_signal); +} + +/* AUDIOBACKEND API */ + +std::string +ASIOBackend::name () const +{ + return X_("ASIO"); +} + +bool +ASIOBackend::is_realtime () const +{ + return true; +} + +std::vector<AudioBackend::DeviceStatus> +ASIOBackend::enumerate_devices () const +{ + _audio_device_status.clear(); +#if 0 // TODO + std::map<size_t, std::string> devices; + _pcmio->device_list(devices); + + for (std::map<size_t, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) { + if (_audio_device == "") _audio_device = i->second; + _audio_device_status.push_back (DeviceStatus (i->second, true)); + } +#endif + return _audio_device_status; +} + +std::vector<float> +ASIOBackend::available_sample_rates (const std::string&) const +{ + std::vector<float> sr; +#if 0 // TODO + _pcmio->available_sample_rates(_audio_device, sr); +#endif + return sr; +} + +std::vector<uint32_t> +ASIOBackend::available_buffer_sizes (const std::string&) const +{ + std::vector<uint32_t> bs; +#if 0 // TODO + _pcmio->available_buffer_sizes(_audio_device, bs); +#endif + return bs; +} + +uint32_t +ASIOBackend::available_input_channel_count (const std::string&) const +{ + return 128; // TODO query current device +} + +uint32_t +ASIOBackend::available_output_channel_count (const std::string&) const +{ + return 128; // TODO query current device +} + +bool +ASIOBackend::can_change_sample_rate_when_running () const +{ + return false; +} + +bool +ASIOBackend::can_change_buffer_size_when_running () const +{ + return true; +} + +int +ASIOBackend::set_device_name (const std::string& d) +{ + _audio_device = d; +#if 0 // TODO + const float sr = _pcmio->current_sample_rate(_audio_device); +#endif + //if (sr > 0) { set_sample_rate(sr); } + return 0; +} + +int +ASIOBackend::set_sample_rate (float sr) +{ + if (sr <= 0) { return -1; } + // TODO check if it's in the list of valid SR + _samplerate = sr; + engine.sample_rate_change (sr); + return 0; +} + +int +ASIOBackend::set_buffer_size (uint32_t bs) +{ + if (bs <= 0 || bs >= _max_buffer_size) { + return -1; + } + _samples_per_period = bs; +#if 0 // TODO + _pcmio->set_samples_per_period(bs); +#endif + engine.buffer_size_change (bs); + return 0; +} + +int +ASIOBackend::set_interleaved (bool yn) +{ + if (!yn) { return 0; } + return -1; +} + +int +ASIOBackend::set_input_channels (uint32_t cc) +{ + _n_inputs = cc; + return 0; +} + +int +ASIOBackend::set_output_channels (uint32_t cc) +{ + _n_outputs = cc; + return 0; +} + +int +ASIOBackend::set_systemic_input_latency (uint32_t sl) +{ + _systemic_audio_input_latency = sl; + return 0; +} + +int +ASIOBackend::set_systemic_output_latency (uint32_t sl) +{ + _systemic_audio_output_latency = sl; + return 0; +} + +/* Retrieving parameters */ +std::string +ASIOBackend::device_name () const +{ + return _audio_device; +} + +float +ASIOBackend::sample_rate () const +{ + return _samplerate; +} + +uint32_t +ASIOBackend::buffer_size () const +{ + return _samples_per_period; +} + +bool +ASIOBackend::interleaved () const +{ + return false; +} + +uint32_t +ASIOBackend::input_channels () const +{ + return _n_inputs; +} + +uint32_t +ASIOBackend::output_channels () const +{ + return _n_outputs; +} + +uint32_t +ASIOBackend::systemic_input_latency () const +{ + return _systemic_audio_input_latency; +} + +uint32_t +ASIOBackend::systemic_output_latency () const +{ + return _systemic_audio_output_latency; +} + +/* MIDI */ + +std::vector<std::string> +ASIOBackend::enumerate_midi_options () const +{ + if (_midi_options.empty()) { + _midi_options.push_back (_("WindowsMidi")); + _midi_options.push_back (_("None")); + } + return _midi_options; +} + +int +ASIOBackend::set_midi_option (const std::string& opt) +{ + if (opt != _("None") && opt != _("WindowsMidi")) { + return -1; + } + _midi_driver_option = opt; + return 0; +} + +std::string +ASIOBackend::midi_option () const +{ + return _midi_driver_option; +} + +void +ASIOBackend::launch_control_app () +{ + // TODO +} + +/* State Control */ + +static void * pthread_freewheel (void *arg) +{ + ASIOBackend *d = static_cast<ASIOBackend *>(arg); + d->freewheel_thread (); + pthread_exit (0); + return 0; +} + +static int process_callback_ptr (void *arg, const uint32_t n_samples, const uint64_t host_time) +{ + ASIOBackend *d = static_cast<ASIOBackend*> (arg); + return d->process_callback(n_samples, host_time); +} + +int +ASIOBackend::_start (bool for_latency_measurement) +{ + if ((!_active_cb || !_active_fw) && _run) { + // recover from 'halted', reap threads + stop(); + } + + if (_active_cb || _active_fw || _run) { + PBD::error << _("ASIOBackend: already active.") << endmsg; + return -1; + } + + if (_ports.size()) { + PBD::warning << _("ASIOBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg; + _system_inputs.clear(); + _system_outputs.clear(); + _system_midi_in.clear(); + _system_midi_out.clear(); + _ports.clear(); + } + + assert(_active_cb == false); + assert(_active_fw == false); + + _freewheel_ack = false; + _reinit_thread_callback = true; + _last_process_start = 0; + +#if 0 // TODO + _pcmio->set_error_callback (error_callback_ptr, this); + _pcmio->set_buffer_size_callback (buffer_size_callback_ptr, this); + _pcmio->set_sample_rate_callback (sample_rate_callback_ptr, this); + + _pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this); + + switch (_pcmio->state ()) { + case 0: /* OK */ break; + case -1: PBD::error << _("ASIOBackend: failed to open device.") << endmsg; break; + default: PBD::error << _("ASIOBackend: initialization failed.") << endmsg; break; + } + if (_pcmio->state ()) { + return -1; + } + + if (_n_outputs != _pcmio->n_playback_channels ()) { + if (_n_outputs == 0) { + _n_outputs = _pcmio->n_playback_channels (); + } else { + _n_outputs = std::min (_n_outputs, _pcmio->n_playback_channels ()); + } + PBD::info << _("ASIOBackend: adjusted output channel count to match device.") << endmsg; + } + + if (_n_inputs != _pcmio->n_capture_channels ()) { + if (_n_inputs == 0) { + _n_inputs = _pcmio->n_capture_channels (); + } else { + _n_inputs = std::min (_n_inputs, _pcmio->n_capture_channels ()); + } + PBD::info << _("ASIOBackend: adjusted input channel count to match device.") << endmsg; + } + + if (_pcmio->samples_per_period() != _samples_per_period) { + _samples_per_period = _pcmio->samples_per_period(); + PBD::warning << _("ASIOBackend: samples per period does not match.") << endmsg; + } + + if (_pcmio->sample_rate() != _samplerate) { + _samplerate = _pcmio->sample_rate(); + engine.sample_rate_change (_samplerate); + PBD::warning << _("ASIOBackend: sample rate does not match.") << endmsg; + } +#endif + + _measure_latency = for_latency_measurement; + + _preinit = true; + _run = true; + _port_change_flag = false; + +#if 0 // TODO + if (_midi_driver_option == _("WindowsMidi")) { + // TODO + //_midiio->set_enabled(true); + //_midiio->set_port_changed_callback(midi_port_change, this); + //_midiio->start(); // triggers port discovery, callback coremidi_rediscover() + } +#endif + + if (register_system_audio_ports()) { + PBD::error << _("ASIOBackend: failed to register system ports.") << endmsg; + _run = false; + return -1; + } + + engine.sample_rate_change (_samplerate); + engine.buffer_size_change (_samples_per_period); + + if (engine.reestablish_ports ()) { + PBD::error << _("ASIOBackend: Could not re-establish ports.") << endmsg; + _run = false; + return -1; + } + + if (pthread_create (&_freeewheel_thread, NULL, pthread_freewheel, this)) + { + PBD::error << _("ASIOBackend: failed to create process thread.") << endmsg; +#if 0 // TODO + delete _pcmio; _pcmio = 0; +#endif + _run = false; + return -1; + } + + int timeout = 5000; + while ((!_active_cb || !_active_fw) && --timeout > 0) { Glib::usleep (1000); } + + if (timeout == 0) { + PBD::error << _("ASIOBackend: failed to start.") << endmsg; + } + + if (!_active_fw) { + PBD::error << _("ASIOBackend: failed to start freewheeling thread.") << endmsg; + _run = false; +#if 0 // TODO + _pcmio->pcm_stop(); +#endif + unregister_ports(); + _active_cb = false; + _active_fw = false; + return -1; + } + + if (!_active_cb) { + PBD::error << _("ASIOBackend: failed to start ASIO.") << endmsg; + stop(); + _run = false; + return -1; + } + + engine.reconnect_ports (); + + // force an initial registration_callback() & latency re-compute + _port_change_flag = true; + pre_process (); + + // all systems go. +#if 0 // TODO + _pcmio->set_xrun_callback (xrun_callback_ptr, this); +#endif + _preinit = false; + + return 0; +} + +int +ASIOBackend::stop () +{ + void *status; + if (!_run) { + return 0; + } + + _run = false; +#if 0 // TODO + _pcmio->pcm_stop(); + _midiio->set_port_changed_callback(NULL, NULL); + _midiio->stop(); +#endif + pthread_mutex_lock (&_freewheel_mutex); + pthread_cond_signal (&_freewheel_signal); + pthread_mutex_unlock (&_freewheel_mutex); + + if (pthread_join (_freeewheel_thread, &status)) { + PBD::error << _("ASIOBackend: failed to terminate.") << endmsg; + return -1; + } + + unregister_ports(); + + _active_cb = false; + _active_fw = false; // ?? + + return 0; +} + +int +ASIOBackend::freewheel (bool onoff) +{ + if (onoff == _freewheeling) { + return 0; + } + _freewheeling = onoff; + // wake up freewheeling thread + if (0 == pthread_mutex_trylock (&_freewheel_mutex)) { + pthread_cond_signal (&_freewheel_signal); + pthread_mutex_unlock (&_freewheel_mutex); + } + return 0; +} + +float +ASIOBackend::dsp_load () const +{ + return 100.f * _dsp_load; +} + +size_t +ASIOBackend::raw_buffer_size (DataType t) +{ + switch (t) { + case DataType::AUDIO: + return _samples_per_period * sizeof(Sample); + case DataType::MIDI: + return _max_buffer_size; // XXX not really limited + } + return 0; +} + +/* Process time */ +framepos_t +ASIOBackend::sample_time () +{ + return _processed_samples; +} + +framepos_t +ASIOBackend::sample_time_at_cycle_start () +{ + return _processed_samples; +} + +pframes_t +ASIOBackend::samples_since_cycle_start () +{ + if (!_active_cb || !_run || _freewheeling || _freewheel) { + return 0; + } + if (_last_process_start == 0) { + return 0; + } + +#if 0 // TODO + const uint64_t now = AudioGetCurrentHostTime (); + const int64_t elapsed_time_ns = AudioConvertHostTimeToNanos(now - _last_process_start); + return std::max((pframes_t)0, (pframes_t)rint(1e-9 * elapsed_time_ns * _samplerate)); +#else + return 0; +#endif +} + +void * +ASIOBackend::asio_process_thread (void *arg) +{ + ThreadData* td = reinterpret_cast<ThreadData*> (arg); + boost::function<void ()> f = td->f; + delete td; + f (); + return 0; +} + +int +ASIOBackend::create_process_thread (boost::function<void()> func) +{ + pthread_t thread_id; + pthread_attr_t attr; + size_t stacksize = 100000; + + ThreadData* td = new ThreadData (this, func, stacksize); + + if (_realtime_pthread_create (SCHED_FIFO, -21, stacksize, + &thread_id, asio_process_thread, td)) { + pthread_attr_init (&attr); + pthread_attr_setstacksize (&attr, stacksize); + if (pthread_create (&thread_id, &attr, asio_process_thread, td)) { + PBD::error << _("AudioEngine: cannot create process thread.") << endmsg; + pthread_attr_destroy (&attr); + return -1; + } + pthread_attr_destroy (&attr); + } + + _threads.push_back (thread_id); + return 0; +} + +int +ASIOBackend::join_process_threads () +{ + int rv = 0; + + for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i) + { + void *status; + if (pthread_join (*i, &status)) { + PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg; + rv -= 1; + } + } + _threads.clear (); + return rv; +} + +bool +ASIOBackend::in_process_thread () +{ + if (pthread_equal (_main_thread, pthread_self()) != 0) { + return true; + } + + for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i) + { + if (pthread_equal (*i, pthread_self ()) != 0) { + return true; + } + } + return false; +} + +uint32_t +ASIOBackend::process_thread_count () +{ + return _threads.size (); +} + +void +ASIOBackend::update_latencies () +{ + // trigger latency callback in RT thread (locked graph) + port_connect_add_remove_callback(); +} + +/* PORTENGINE API */ + +void* +ASIOBackend::private_handle () const +{ + return NULL; +} + +const std::string& +ASIOBackend::my_name () const +{ + return _instance_name; +} + +bool +ASIOBackend::available () const +{ + return _run && _active_fw && _active_cb; +} + +uint32_t +ASIOBackend::port_name_size () const +{ + return 256; +} + +int +ASIOBackend::set_port_name (PortEngine::PortHandle port, const std::string& name) +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackend::set_port_name: Invalid Port(s)") << endmsg; + return -1; + } + return static_cast<ASIOBackendPort*>(port)->set_name (_instance_name + ":" + name); +} + +std::string +ASIOBackend::get_port_name (PortEngine::PortHandle port) const +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackend::get_port_name: Invalid Port(s)") << endmsg; + return std::string (); + } + return static_cast<ASIOBackendPort*>(port)->name (); +} + +int +ASIOBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackend::get_port_name: Invalid Port(s)") << endmsg; + return -1; + } + if (key == "http://jackaudio.org/metadata/pretty-name") { + type = ""; + value = static_cast<ASIOBackendPort*>(port)->pretty_name (); + if (!value.empty()) { + return 0; + } + } + return -1; +} + +PortEngine::PortHandle +ASIOBackend::get_port_by_name (const std::string& name) const +{ + PortHandle port = (PortHandle) find_port (name); + return port; +} + +int +ASIOBackend::get_ports ( + const std::string& port_name_pattern, + DataType type, PortFlags flags, + std::vector<std::string>& port_names) const +{ + int rv = 0; + regex_t port_regex; + bool use_regexp = false; + if (port_name_pattern.size () > 0) { + if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) { + use_regexp = true; + } + } + for (size_t i = 0; i < _ports.size (); ++i) { + ASIOBackendPort* port = _ports[i]; + if ((port->type () == type) && (port->flags () & flags)) { + if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) { + port_names.push_back (port->name ()); + ++rv; + } + } + } + if (use_regexp) { + regfree (&port_regex); + } + return rv; +} + +DataType +ASIOBackend::port_data_type (PortEngine::PortHandle port) const +{ + if (!valid_port (port)) { + return DataType::NIL; + } + return static_cast<ASIOBackendPort*>(port)->type (); +} + +PortEngine::PortHandle +ASIOBackend::register_port ( + const std::string& name, + ARDOUR::DataType type, + ARDOUR::PortFlags flags) +{ + if (name.size () == 0) { return 0; } + if (flags & IsPhysical) { return 0; } + return add_port (_instance_name + ":" + name, type, flags); +} + +PortEngine::PortHandle +ASIOBackend::add_port ( + const std::string& name, + ARDOUR::DataType type, + ARDOUR::PortFlags flags) +{ + assert(name.size ()); + if (find_port (name)) { + PBD::error << _("ASIOBackend::register_port: Port already exists:") + << " (" << name << ")" << endmsg; + return 0; + } + ASIOBackendPort* port = NULL; + switch (type) { + case DataType::AUDIO: + port = new ASIOPort (*this, name, flags); + break; + case DataType::MIDI: + port = new WindowsMidiPort (*this, name, flags); + break; + default: + PBD::error << _("ASIOBackend::register_port: Invalid Data Type.") << endmsg; + return 0; + } + + _ports.push_back (port); + + return port; +} + +void +ASIOBackend::unregister_port (PortEngine::PortHandle port_handle) +{ + if (!_run) { + return; + } + ASIOBackendPort* port = static_cast<ASIOBackendPort*>(port_handle); + std::vector<ASIOBackendPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<ASIOBackendPort*>(port_handle)); + if (i == _ports.end ()) { + PBD::error << _("ASIOBackend::unregister_port: Failed to find port") << endmsg; + return; + } + disconnect_all(port_handle); + _ports.erase (i); + delete port; +} + +int +ASIOBackend::register_system_audio_ports() +{ + LatencyRange lr; + + const uint32_t a_ins = _n_inputs; + const uint32_t a_out = _n_outputs; + + const uint32_t asio_reported_input_latency = 0; // TODO _pcmio->get_latency(_audio_device, true); + const uint32_t asio_reported_output_latency = 0; // TODO _pcmio->get_latency(_audio_device, false); + + /* audio ports */ + lr.min = lr.max = asio_reported_input_latency + (_measure_latency ? 0 : _systemic_audio_input_latency); + for (uint32_t i = 0; i < a_ins; ++i) { + char tmp[64]; + snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1); + PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal)); + if (!p) return -1; + set_latency_range (p, false, lr); + ASIOBackendPort *cp = static_cast<ASIOBackendPort*>(p); + //cp->set_pretty_name (_pcmio->cached_port_name(i, true)); // TODO + _system_inputs.push_back(cp); + } + + lr.min = lr.max = asio_reported_output_latency + (_measure_latency ? 0 : _systemic_audio_output_latency); + for (uint32_t i = 0; i < a_out; ++i) { + char tmp[64]; + snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1); + PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal)); + if (!p) return -1; + set_latency_range (p, true, lr); + ASIOBackendPort *cp = static_cast<ASIOBackendPort*>(p); + //cp->set_pretty_name (_pcmio->cached_port_name(i, false)); // TODO + _system_outputs.push_back(cp); + } + return 0; +} + +void +ASIOBackend::unregister_ports (bool system_only) +{ + size_t i = 0; + _system_inputs.clear(); + _system_outputs.clear(); + _system_midi_in.clear(); + _system_midi_out.clear(); + while (i < _ports.size ()) { + ASIOBackendPort* port = _ports[i]; + if (! system_only || (port->is_physical () && port->is_terminal ())) { + port->disconnect_all (); + delete port; + _ports.erase (_ports.begin() + i); + } else { + ++i; + } + } +} + +int +ASIOBackend::connect (const std::string& src, const std::string& dst) +{ + ASIOBackendPort* src_port = find_port (src); + ASIOBackendPort* dst_port = find_port (dst); + + if (!src_port) { + PBD::error << _("ASIOBackend::connect: Invalid Source port:") + << " (" << src <<")" << endmsg; + return -1; + } + if (!dst_port) { + PBD::error << _("ASIOBackend::connect: Invalid Destination port:") + << " (" << dst <<")" << endmsg; + return -1; + } + return src_port->connect (dst_port); +} + +int +ASIOBackend::disconnect (const std::string& src, const std::string& dst) +{ + ASIOBackendPort* src_port = find_port (src); + ASIOBackendPort* dst_port = find_port (dst); + + if (!src_port || !dst_port) { + PBD::error << _("ASIOBackend::disconnect: Invalid Port(s)") << endmsg; + return -1; + } + return src_port->disconnect (dst_port); +} + +int +ASIOBackend::connect (PortEngine::PortHandle src, const std::string& dst) +{ + ASIOBackendPort* dst_port = find_port (dst); + if (!valid_port (src)) { + PBD::error << _("ASIOBackend::connect: Invalid Source Port Handle") << endmsg; + return -1; + } + if (!dst_port) { + PBD::error << _("ASIOBackend::connect: Invalid Destination Port") + << " (" << dst << ")" << endmsg; + return -1; + } + return static_cast<ASIOBackendPort*>(src)->connect (dst_port); +} + +int +ASIOBackend::disconnect (PortEngine::PortHandle src, const std::string& dst) +{ + ASIOBackendPort* dst_port = find_port (dst); + if (!valid_port (src) || !dst_port) { + PBD::error << _("ASIOBackend::disconnect: Invalid Port(s)") << endmsg; + return -1; + } + return static_cast<ASIOBackendPort*>(src)->disconnect (dst_port); +} + +int +ASIOBackend::disconnect_all (PortEngine::PortHandle port) +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackend::disconnect_all: Invalid Port") << endmsg; + return -1; + } + static_cast<ASIOBackendPort*>(port)->disconnect_all (); + return 0; +} + +bool +ASIOBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/) +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackend::disconnect_all: Invalid Port") << endmsg; + return false; + } + return static_cast<ASIOBackendPort*>(port)->is_connected (); +} + +bool +ASIOBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/) +{ + ASIOBackendPort* dst_port = find_port (dst); + if (!valid_port (src) || !dst_port) { + PBD::error << _("ASIOBackend::connected_to: Invalid Port") << endmsg; + return false; + } + return static_cast<ASIOBackendPort*>(src)->is_connected (dst_port); +} + +bool +ASIOBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/) +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackend::physically_connected: Invalid Port") << endmsg; + return false; + } + return static_cast<ASIOBackendPort*>(port)->is_physically_connected (); +} + +int +ASIOBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/) +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackend::get_connections: Invalid Port") << endmsg; + return -1; + } + + assert (0 == names.size ()); + + const std::vector<ASIOBackendPort*>& connected_ports = static_cast<ASIOBackendPort*>(port)->get_connections (); + + for (std::vector<ASIOBackendPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) { + names.push_back ((*i)->name ()); + } + + return (int)names.size (); +} + +/* MIDI */ +int +ASIOBackend::midi_event_get ( + pframes_t& timestamp, + size_t& size, uint8_t** buf, void* port_buffer, + uint32_t event_index) +{ + if (!buf || !port_buffer) return -1; + WindowsMidiBuffer& source = * static_cast<WindowsMidiBuffer*>(port_buffer); + if (event_index >= source.size ()) { + return -1; + } + WindowsMidiEvent * const event = source[event_index].get (); + + timestamp = event->timestamp (); + size = event->size (); + *buf = event->data (); + return 0; +} + +int +ASIOBackend::midi_event_put ( + void* port_buffer, + pframes_t timestamp, + const uint8_t* buffer, size_t size) +{ + if (!buffer || !port_buffer) return -1; + WindowsMidiBuffer& dst = * static_cast<WindowsMidiBuffer*>(port_buffer); + if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) { +#ifndef NDEBUG + // nevermind, ::get_buffer() sorts events + fprintf (stderr, "WindowsMidiBuffer: unordered event: %d > %d\n", + (pframes_t)dst.back ()->timestamp (), timestamp); +#endif + } + dst.push_back (boost::shared_ptr<WindowsMidiEvent>(new WindowsMidiEvent (timestamp, buffer, size))); + return 0; +} + +uint32_t +ASIOBackend::get_midi_event_count (void* port_buffer) +{ + if (!port_buffer) return 0; + return static_cast<WindowsMidiBuffer*>(port_buffer)->size (); +} + +void +ASIOBackend::midi_clear (void* port_buffer) +{ + if (!port_buffer) return; + WindowsMidiBuffer * buf = static_cast<WindowsMidiBuffer*>(port_buffer); + assert (buf); + buf->clear (); +} + +/* Monitoring */ + +bool +ASIOBackend::can_monitor_input () const +{ + return false; +} + +int +ASIOBackend::request_input_monitoring (PortEngine::PortHandle, bool) +{ + return -1; +} + +int +ASIOBackend::ensure_input_monitoring (PortEngine::PortHandle, bool) +{ + return -1; +} + +bool +ASIOBackend::monitoring_input (PortEngine::PortHandle) +{ + return false; +} + +/* Latency management */ + +void +ASIOBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range) +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackendPort::set_latency_range (): invalid port.") << endmsg; + } + static_cast<ASIOBackendPort*>(port)->set_latency_range (latency_range, for_playback); +} + +LatencyRange +ASIOBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback) +{ + LatencyRange r; + if (!valid_port (port)) { + PBD::error << _("ASIOBackendPort::get_latency_range (): invalid port.") << endmsg; + r.min = 0; + r.max = 0; + return r; + } + ASIOBackendPort* p = static_cast<ASIOBackendPort*>(port); + assert(p); + + r = p->latency_range (for_playback); + if (p->is_physical() && p->is_terminal() && p->type() == DataType::AUDIO) { + if (p->is_input() && for_playback) { + r.min += _samples_per_period; + r.max += _samples_per_period; + } + if (p->is_output() && !for_playback) { + r.min += _samples_per_period; + r.max += _samples_per_period; + } + } + return r; +} + +/* Discovering physical ports */ + +bool +ASIOBackend::port_is_physical (PortEngine::PortHandle port) const +{ + if (!valid_port (port)) { + PBD::error << _("ASIOBackendPort::port_is_physical (): invalid port.") << endmsg; + return false; + } + return static_cast<ASIOBackendPort*>(port)->is_physical (); +} + +void +ASIOBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names) +{ + for (size_t i = 0; i < _ports.size (); ++i) { + ASIOBackendPort* port = _ports[i]; + if ((port->type () == type) && port->is_input () && port->is_physical ()) { + port_names.push_back (port->name ()); + } + } +} + +void +ASIOBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names) +{ + for (size_t i = 0; i < _ports.size (); ++i) { + ASIOBackendPort* port = _ports[i]; + if ((port->type () == type) && port->is_output () && port->is_physical ()) { + port_names.push_back (port->name ()); + } + } +} + +ChanCount +ASIOBackend::n_physical_outputs () const +{ + int n_midi = 0; + int n_audio = 0; + for (size_t i = 0; i < _ports.size (); ++i) { + ASIOBackendPort* port = _ports[i]; + if (port->is_output () && port->is_physical ()) { + switch (port->type ()) { + case DataType::AUDIO: ++n_audio; break; + case DataType::MIDI: ++n_midi; break; + default: break; + } + } + } + ChanCount cc; + cc.set (DataType::AUDIO, n_audio); + cc.set (DataType::MIDI, n_midi); + return cc; +} + +ChanCount +ASIOBackend::n_physical_inputs () const +{ + int n_midi = 0; + int n_audio = 0; + for (size_t i = 0; i < _ports.size (); ++i) { + ASIOBackendPort* port = _ports[i]; + if (port->is_input () && port->is_physical ()) { + switch (port->type ()) { + case DataType::AUDIO: ++n_audio; break; + case DataType::MIDI: ++n_midi; break; + default: break; + } + } + } + ChanCount cc; + cc.set (DataType::AUDIO, n_audio); + cc.set (DataType::MIDI, n_midi); + return cc; +} + +/* Getting access to the data buffer for a port */ + +void* +ASIOBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes) +{ + if (!port || !valid_port (port)) return NULL; + return static_cast<ASIOBackendPort*>(port)->get_buffer (nframes); +} + +void +ASIOBackend::pre_process () +{ + bool connections_changed = false; + bool ports_changed = false; + if (!pthread_mutex_trylock (&_port_callback_mutex)) { + if (_port_change_flag) { + ports_changed = true; + _port_change_flag = false; + } + if (!_port_connection_queue.empty ()) { + connections_changed = true; + } + while (!_port_connection_queue.empty ()) { + PortConnectData *c = _port_connection_queue.back (); + manager.connect_callback (c->a, c->b, c->c); + _port_connection_queue.pop_back (); + delete c; + } + pthread_mutex_unlock (&_port_callback_mutex); + } + if (ports_changed) { + manager.registration_callback(); + } + if (connections_changed) { + manager.graph_order_callback(); + } + if (connections_changed || ports_changed) { + engine.latency_callback(false); + engine.latency_callback(true); + } +} + +void * +ASIOBackend::freewheel_thread () +{ + _active_fw = true; + bool first_run = false; + /* Freewheeling - use for export. The first call to + * engine.process_callback() after engine.freewheel_callback will + * if the first export cycle. + * For reliable precise export timing, the calls need to be in sync. + * + * Furthermore we need to make sure the registered process thread + * is correct. + * + * _freewheeling = GUI thread state as set by ::freewheel() + * _freewheel = in sync here (export thread) + */ + pthread_mutex_lock (&_freewheel_mutex); + while (_run) { + // check if we should run, + if (_freewheeling != _freewheel) { + if (!_freewheeling) { + // prepare leaving freewheeling mode + _freewheel = false; // first mark as disabled + _reinit_thread_callback = true; // hand over _main_thread + _freewheel_ack = false; // prepare next handshake +#if 0 // TODO disable hadrware MIDI threads during freewheeling + _midiio->set_enabled(true); +#endif + } else { + first_run = true; + _freewheel = true; + } + } + + if (!_freewheel || !_freewheel_ack) { + // wait for a change, we use a timed wait to + // terminate early in case some error sets _run = 0 + struct timeval tv; + struct timespec ts; + gettimeofday (&tv, NULL); + ts.tv_sec = tv.tv_sec + 3; + ts.tv_nsec = 0; + pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts); + continue; + } + + if (first_run) { + // tell the engine we're ready to GO. + engine.freewheel_callback (_freewheeling); + first_run = false; + _main_thread = pthread_self(); + AudioEngine::thread_init_callback (this); +#if 0 // TODO + _midiio->set_enabled(false); +#endif + } + + // process port updates first in every cycle. + pre_process(); + + // prevent device changes + pthread_mutex_lock (&_process_callback_mutex); + + /* Freewheelin' */ + + // clear input buffers + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) { + memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample)); + } + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) { + static_cast<WindowsMidiBuffer*>((*it)->get_buffer(0))->clear (); + } + + _last_process_start = 0; + if (engine.process_callback (_samples_per_period)) { + pthread_mutex_unlock (&_process_callback_mutex); + break; + } + + pthread_mutex_unlock (&_process_callback_mutex); + _dsp_load = 1.0; + Glib::usleep (100); // don't hog cpu + } + + pthread_mutex_unlock (&_freewheel_mutex); + + _active_fw = false; + + if (_run) { + // engine.process_callback() returner error + engine.halted_callback("ASIO Freehweeling aborted."); + } + return 0; +} + +int +ASIOBackend::process_callback (const uint32_t n_samples, const uint64_t host_time) +{ + uint32_t i = 0; + uint64_t clock1, clock2; + + _active_cb = true; + + if (_run && _freewheel && !_freewheel_ack) { + // acknowledge freewheeling; hand-over thread ID + pthread_mutex_lock (&_freewheel_mutex); + if (_freewheel) _freewheel_ack = true; + pthread_cond_signal (&_freewheel_signal); + pthread_mutex_unlock (&_freewheel_mutex); + } + + if (!_run || _freewheel || _preinit) { + // NB if we return 1, the output is + // zeroed by the asio callback + return 1; + } + + if (_reinit_thread_callback || _main_thread != pthread_self()) { + _reinit_thread_callback = false; + _main_thread = pthread_self(); + AudioEngine::thread_init_callback (this); + } + + if (pthread_mutex_trylock (&_process_callback_mutex)) { + // block while devices are added/removed +#ifndef NDEBUG + printf("Xrun due to device change\n"); +#endif + engine.Xrun(); + return 1; + } + /* port-connection change */ + pre_process(); + + // cycle-length in usec + const double nominal_time = 1e6 * n_samples / _samplerate; + + clock1 = g_get_monotonic_time(); + + /* get midi */ + i=0; + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) { + WindowsMidiBuffer* mbuf = static_cast<WindowsMidiBuffer*>((*it)->get_buffer(0)); + mbuf->clear(); +#if 0 // TODO + uint64_t time_ns; + uint8_t data[128]; + size_t size = sizeof(data); + while (_midiio->recv_event (i, nominal_time, time_ns, data, size)) { + pframes_t time = floor((float) time_ns * _samplerate * 1e-9); + assert (time < n_samples); + midi_event_put((void*)mbuf, time, data, size); + size = sizeof(data); + } +#endif + } + + /* get audio */ + i = 0; + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) { +#if 0 // TODO + _pcmio->get_capture_channel (i, (float*)((*it)->get_buffer(n_samples)), n_samples); +#else + memset ((*it)->get_buffer (n_samples), 0, n_samples * sizeof (Sample)); +#endif + } + + /* clear output buffers */ + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) { + memset ((*it)->get_buffer (n_samples), 0, n_samples * sizeof (Sample)); + } + +#if 0 // TODO; sync Audio + midi + _midiio->start_cycle(); +#endif + _last_process_start = host_time; + + if (engine.process_callback (n_samples)) { + fprintf(stderr, "ENGINE PROCESS ERROR\n"); + _active_cb = false; + pthread_mutex_unlock (&_process_callback_mutex); + return -1; + } + + /* mixdown midi */ + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) { + static_cast<WindowsMidiPort*>(*it)->get_buffer(0); + } + + /* queue outgoing midi */ +#if 0 // TODO + i = 0; + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) { +#if 0 // something's still b0rked with WindowsMidiIo::send_events() + const WindowsMidiBuffer *src = static_cast<const WindowsMidiPort*>(*it)->const_buffer(); + _midiio->send_events (i, nominal_time, (void*)src); +#else // works.. + const WindowsMidiBuffer *src = static_cast<const WindowsMidiPort*>(*it)->const_buffer(); + for (WindowsMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) { + _midiio->send_event (i, (*mit)->timestamp() / nominal_time, (*mit)->data(), (*mit)->size()); + } +#endif + } +#endif + + /* write back audio */ +#if 0 // TODO + i = 0; + for (std::vector<ASIOBackendPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) { + _pcmio->set_playback_channel (i, (float const*)(*it)->get_buffer (n_samples), n_samples); + } +#endif + + _processed_samples += n_samples; + + /* calc DSP load. */ + clock2 = g_get_monotonic_time(); + const int64_t elapsed_time = clock2 - clock1; + _dsp_load = elapsed_time / nominal_time; + + pthread_mutex_unlock (&_process_callback_mutex); + return 0; +} + +void +ASIOBackend::error_callback () +{ +#if 0 // TODO + _pcmio->set_error_callback (NULL, NULL); + _pcmio->set_sample_rate_callback (NULL, NULL); + _pcmio->set_xrun_callback (NULL, NULL); + _midiio->set_port_changed_callback(NULL, NULL); +#endif + engine.halted_callback("ASIO Process aborted."); + _active_cb = false; +} + +void +ASIOBackend::xrun_callback () +{ + engine.Xrun (); +} + +void +ASIOBackend::buffer_size_callback () +{ +#if 0 // TODO + uint32_t bs = _pcmio->samples_per_period(); + if (bs == _samples_per_period) { + return; + } + _samples_per_period = bs; + engine.buffer_size_change (_samples_per_period); +#endif +} + +void +ASIOBackend::sample_rate_callback () +{ +#if 0 // TODO + _pcmio->set_error_callback (NULL, NULL); + _pcmio->set_sample_rate_callback (NULL, NULL); + _pcmio->set_xrun_callback (NULL, NULL); + _midiio->set_port_changed_callback(NULL, NULL); + engine.halted_callback("Sample Rate Changed."); + stop(); +#endif +} + +void +ASIOBackend::hw_changed_callback () +{ +#if 0 // TODO + _reinit_thread_callback = true; + engine.request_device_list_update(); +#endif +} + +/******************************************************************************/ + +static boost::shared_ptr<ASIOBackend> _instance; + +static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e); +static int instantiate (const std::string& arg1, const std::string& /* arg2 */); +static int deinstantiate (); +static bool already_configured (); +static bool available (); + +static ARDOUR::AudioBackendInfo _descriptor = { + "ASIO", + instantiate, + deinstantiate, + backend_factory, + already_configured, + available +}; + +static boost::shared_ptr<AudioBackend> +backend_factory (AudioEngine& e) +{ + if (!_instance) { + _instance.reset (new ASIOBackend (e, _descriptor)); + } + return _instance; +} + +static int +instantiate (const std::string& arg1, const std::string& /* arg2 */) +{ + s_instance_name = arg1; + return 0; +} + +static int +deinstantiate () +{ + _instance.reset (); + return 0; +} + +static bool +already_configured () +{ + return false; +} + +static bool +available () +{ + return true; +} + +extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor () +{ + return &_descriptor; +} + + +/******************************************************************************/ +ASIOBackendPort::ASIOBackendPort (ASIOBackend &b, const std::string& name, PortFlags flags) + : _osx_backend (b) + , _name (name) + , _flags (flags) +{ + _capture_latency_range.min = 0; + _capture_latency_range.max = 0; + _playback_latency_range.min = 0; + _playback_latency_range.max = 0; +} + +ASIOBackendPort::~ASIOBackendPort () { + disconnect_all (); +} + + +int ASIOBackendPort::connect (ASIOBackendPort *port) +{ + if (!port) { + PBD::error << _("ASIOBackendPort::connect (): invalid (null) port") << endmsg; + return -1; + } + + if (type () != port->type ()) { + PBD::error << _("ASIOBackendPort::connect (): wrong port-type") << endmsg; + return -1; + } + + if (is_output () && port->is_output ()) { + PBD::error << _("ASIOBackendPort::connect (): cannot inter-connect output ports.") << endmsg; + return -1; + } + + if (is_input () && port->is_input ()) { + PBD::error << _("ASIOBackendPort::connect (): cannot inter-connect input ports.") << endmsg; + return -1; + } + + if (this == port) { + PBD::error << _("ASIOBackendPort::connect (): cannot self-connect ports.") << endmsg; + return -1; + } + + if (is_connected (port)) { +#if 0 // don't bother to warn about this for now. just ignore it + PBD::error << _("ASIOBackendPort::connect (): ports are already connected:") + << " (" << name () << ") -> (" << port->name () << ")" + << endmsg; +#endif + return -1; + } + + _connect (port, true); + return 0; +} + + +void ASIOBackendPort::_connect (ASIOBackendPort *port, bool callback) +{ + _connections.push_back (port); + if (callback) { + port->_connect (this, false); + _osx_backend.port_connect_callback (name(), port->name(), true); + } +} + +int ASIOBackendPort::disconnect (ASIOBackendPort *port) +{ + if (!port) { + PBD::error << _("ASIOBackendPort::disconnect (): invalid (null) port") << endmsg; + return -1; + } + + if (!is_connected (port)) { + PBD::error << _("ASIOBackendPort::disconnect (): ports are not connected:") + << " (" << name () << ") -> (" << port->name () << ")" + << endmsg; + return -1; + } + _disconnect (port, true); + return 0; +} + +void ASIOBackendPort::_disconnect (ASIOBackendPort *port, bool callback) +{ + std::vector<ASIOBackendPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port); + + assert (it != _connections.end ()); + + _connections.erase (it); + + if (callback) { + port->_disconnect (this, false); + _osx_backend.port_connect_callback (name(), port->name(), false); + } +} + + +void ASIOBackendPort::disconnect_all () +{ + while (!_connections.empty ()) { + _connections.back ()->_disconnect (this, false); + _osx_backend.port_connect_callback (name(), _connections.back ()->name(), false); + _connections.pop_back (); + } +} + +bool +ASIOBackendPort::is_connected (const ASIOBackendPort *port) const +{ + return std::find (_connections.begin (), _connections.end (), port) != _connections.end (); +} + +bool ASIOBackendPort::is_physically_connected () const +{ + for (std::vector<ASIOBackendPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) { + if ((*it)->is_physical ()) { + return true; + } + } + return false; +} + +/******************************************************************************/ + +ASIOPort::ASIOPort (ASIOBackend &b, const std::string& name, PortFlags flags) + : ASIOBackendPort (b, name, flags) +{ + memset (_buffer, 0, sizeof (_buffer)); + mlock(_buffer, sizeof (_buffer)); +} + +ASIOPort::~ASIOPort () { } + +void* ASIOPort::get_buffer (pframes_t n_samples) +{ + if (is_input ()) { + std::vector<ASIOBackendPort*>::const_iterator it = get_connections ().begin (); + if (it == get_connections ().end ()) { + memset (_buffer, 0, n_samples * sizeof (Sample)); + } else { + ASIOPort const * source = static_cast<const ASIOPort*>(*it); + assert (source && source->is_output ()); + memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample)); + while (++it != get_connections ().end ()) { + source = static_cast<const ASIOPort*>(*it); + assert (source && source->is_output ()); + Sample* dst = buffer (); + const Sample* src = source->const_buffer (); + for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) { + *dst += *src; + } + } + } + } + return _buffer; +} + + +WindowsMidiPort::WindowsMidiPort (ASIOBackend &b, const std::string& name, PortFlags flags) + : ASIOBackendPort (b, name, flags) + , _n_periods (1) + , _bufperiod (0) +{ + _buffer[0].clear (); + _buffer[1].clear (); +} + +WindowsMidiPort::~WindowsMidiPort () { } + +struct MidiEventSorter { + bool operator() (const boost::shared_ptr<WindowsMidiEvent>& a, const boost::shared_ptr<WindowsMidiEvent>& b) { + return *a < *b; + } +}; + +void* WindowsMidiPort::get_buffer (pframes_t /* nframes */) +{ + if (is_input ()) { + (_buffer[_bufperiod]).clear (); + for (std::vector<ASIOBackendPort*>::const_iterator i = get_connections ().begin (); + i != get_connections ().end (); + ++i) { + const WindowsMidiBuffer * src = static_cast<const WindowsMidiPort*>(*i)->const_buffer (); + for (WindowsMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) { + (_buffer[_bufperiod]).push_back (boost::shared_ptr<WindowsMidiEvent>(new WindowsMidiEvent (**it))); + } + } + std::sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter()); + } + return &(_buffer[_bufperiod]); +} + +WindowsMidiEvent::WindowsMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size) + : _size (size) + , _timestamp (timestamp) + , _data (0) +{ + if (size > 0) { + _data = (uint8_t*) malloc (size); + memcpy (_data, data, size); + } +} + +WindowsMidiEvent::WindowsMidiEvent (const WindowsMidiEvent& other) + : _size (other.size ()) + , _timestamp (other.timestamp ()) + , _data (0) +{ + if (other.size () && other.const_data ()) { + _data = (uint8_t*) malloc (other.size ()); + memcpy (_data, other.const_data (), other.size ()); + } +}; + +WindowsMidiEvent::~WindowsMidiEvent () { + free (_data); +}; diff --git a/libs/backends/asio/asio_backend.h b/libs/backends/asio/asio_backend.h new file mode 100644 index 0000000000..bef158953b --- /dev/null +++ b/libs/backends/asio/asio_backend.h @@ -0,0 +1,434 @@ +/* + * Copyright (C) 2014 Robin Gareus <robin@gareus.org> + * Copyright (C) 2013 Paul Davis + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __libbackend_asio_backend_h__ +#define __libbackend_asio_backend_h__ + +#include <string> +#include <vector> +#include <map> +#include <set> + +#include <stdint.h> +#include <pthread.h> + +#include <boost/shared_ptr.hpp> + +#include "ardour/audio_backend.h" +#include "ardour/types.h" + +namespace ARDOUR { + +class ASIOBackend; + +class WindowsMidiEvent { + public: + WindowsMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size); + WindowsMidiEvent (const WindowsMidiEvent& other); + ~WindowsMidiEvent (); + size_t size () const { return _size; }; + pframes_t timestamp () const { return _timestamp; }; + const unsigned char* const_data () const { return _data; }; + unsigned char* data () { return _data; }; + bool operator< (const WindowsMidiEvent &other) const { return timestamp () < other.timestamp (); }; + private: + size_t _size; + pframes_t _timestamp; + uint8_t *_data; +}; + +typedef std::vector<boost::shared_ptr<WindowsMidiEvent> > WindowsMidiBuffer; + +class ASIOBackendPort { + protected: + ASIOBackendPort (ASIOBackend &b, const std::string&, PortFlags); + public: + virtual ~ASIOBackendPort (); + + const std::string& name () const { return _name; } + const std::string& pretty_name () const { return _pretty_name; } + PortFlags flags () const { return _flags; } + + int set_name (const std::string &name) { _name = name; return 0; } + int set_pretty_name (const std::string &name) { _pretty_name = name; return 0; } + + virtual DataType type () const = 0; + + bool is_input () const { return flags () & IsInput; } + bool is_output () const { return flags () & IsOutput; } + bool is_physical () const { return flags () & IsPhysical; } + bool is_terminal () const { return flags () & IsTerminal; } + bool is_connected () const { return _connections.size () != 0; } + bool is_connected (const ASIOBackendPort *port) const; + bool is_physically_connected () const; + + const std::vector<ASIOBackendPort *>& get_connections () const { return _connections; } + + int connect (ASIOBackendPort *port); + int disconnect (ASIOBackendPort *port); + void disconnect_all (); + + virtual void* get_buffer (pframes_t nframes) = 0; + + const LatencyRange latency_range (bool for_playback) const + { + return for_playback ? _playback_latency_range : _capture_latency_range; + } + + void set_latency_range (const LatencyRange &latency_range, bool for_playback) + { + if (for_playback) + { + _playback_latency_range = latency_range; + } + else + { + _capture_latency_range = latency_range; + } + } + + private: + ASIOBackend &_osx_backend; + std::string _name; + std::string _pretty_name; + const PortFlags _flags; + LatencyRange _capture_latency_range; + LatencyRange _playback_latency_range; + std::vector<ASIOBackendPort*> _connections; + + void _connect (ASIOBackendPort* , bool); + void _disconnect (ASIOBackendPort* , bool); + +}; // class ASIOBackendPort + +class ASIOPort : public ASIOBackendPort { + public: + ASIOPort (ASIOBackend &b, const std::string&, PortFlags); + ~ASIOPort (); + + DataType type () const { return DataType::AUDIO; }; + + Sample* buffer () { return _buffer; } + const Sample* const_buffer () const { return _buffer; } + void* get_buffer (pframes_t nframes); + + private: + Sample _buffer[8192]; +}; // class ASIOPort + +class WindowsMidiPort : public ASIOBackendPort { + public: + WindowsMidiPort (ASIOBackend &b, const std::string&, PortFlags); + ~WindowsMidiPort (); + + DataType type () const { return DataType::MIDI; }; + + void* get_buffer (pframes_t nframes); + const WindowsMidiBuffer * const_buffer () const { return & _buffer[_bufperiod]; } + + void next_period() { if (_n_periods > 1) { get_buffer(0); _bufperiod = (_bufperiod + 1) % _n_periods; } } + void set_n_periods(int n) { if (n > 0 && n < 3) { _n_periods = n; } } + + private: + WindowsMidiBuffer _buffer[2]; + int _n_periods; + int _bufperiod; +}; // class WindowsMidiPort + +class ASIOBackend : public AudioBackend { + friend class ASIOBackendPort; + public: + ASIOBackend (AudioEngine& e, AudioBackendInfo& info); + ~ASIOBackend (); + + /* AUDIOBACKEND API */ + + std::string name () const; + bool is_realtime () const; + + std::vector<DeviceStatus> enumerate_devices () const; + std::vector<float> available_sample_rates (const std::string& device) const; + std::vector<uint32_t> available_buffer_sizes (const std::string& device) const; + uint32_t available_input_channel_count (const std::string& device) const; + uint32_t available_output_channel_count (const std::string& device) const; + + bool can_change_sample_rate_when_running () const; + bool can_change_buffer_size_when_running () const; + + int set_device_name (const std::string&); + int set_sample_rate (float); + int set_buffer_size (uint32_t); + int set_interleaved (bool yn); + int set_input_channels (uint32_t); + int set_output_channels (uint32_t); + int set_systemic_input_latency (uint32_t); + int set_systemic_output_latency (uint32_t); + int set_systemic_midi_input_latency (std::string const, uint32_t) { return 0; } + int set_systemic_midi_output_latency (std::string const, uint32_t) { return 0; } + + int reset_device () { return 0; }; + + /* Retrieving parameters */ + std::string device_name () const; + float sample_rate () const; + uint32_t buffer_size () const; + bool interleaved () const; + uint32_t input_channels () const; + uint32_t output_channels () const; + uint32_t systemic_input_latency () const; + uint32_t systemic_output_latency () const; + uint32_t systemic_midi_input_latency (std::string const) const { return 0; } + uint32_t systemic_midi_output_latency (std::string const) const { return 0; } + + bool can_set_systemic_midi_latencies () const { return false; /* TODO */} + + /* External control app - TODO */ + std::string control_app_name () const { return std::string (); /* return std::string ("Windows"); */ } + void launch_control_app (); + + /* MIDI */ + std::vector<std::string> enumerate_midi_options () const; + int set_midi_option (const std::string&); + std::string midi_option () const; + + std::vector<DeviceStatus> enumerate_midi_devices () const { + return std::vector<AudioBackend::DeviceStatus> (); + } + int set_midi_device_enabled (std::string const, bool) { + return true; + } + bool midi_device_enabled (std::string const) const { + return false; + } + + // really private, but needing static access: + int process_callback(uint32_t, uint64_t); + void error_callback(); + void xrun_callback(); + void buffer_size_callback(); + void sample_rate_callback(); + void hw_changed_callback(); + + protected: + /* State Control */ + int _start (bool for_latency_measurement); + public: + int stop (); + int freewheel (bool); + float dsp_load () const; + size_t raw_buffer_size (DataType t); + + /* Process time */ + framepos_t sample_time (); + framepos_t sample_time_at_cycle_start (); + pframes_t samples_since_cycle_start (); + + int create_process_thread (boost::function<void()> func); + int join_process_threads (); + bool in_process_thread (); + uint32_t process_thread_count (); + + void update_latencies (); + + /* PORTENGINE API */ + + void* private_handle () const; + const std::string& my_name () const; + bool available () const; + uint32_t port_name_size () const; + + int set_port_name (PortHandle, const std::string&); + std::string get_port_name (PortHandle) const; + PortHandle get_port_by_name (const std::string&) const; + int get_port_property (PortHandle, const std::string& key, std::string& value, std::string& type) const; + + int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const; + + DataType port_data_type (PortHandle) const; + + PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags); + void unregister_port (PortHandle); + + int connect (const std::string& src, const std::string& dst); + int disconnect (const std::string& src, const std::string& dst); + int connect (PortHandle, const std::string&); + int disconnect (PortHandle, const std::string&); + int disconnect_all (PortHandle); + + bool connected (PortHandle, bool process_callback_safe); + bool connected_to (PortHandle, const std::string&, bool process_callback_safe); + bool physically_connected (PortHandle, bool process_callback_safe); + int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe); + + /* MIDI */ + int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index); + int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size); + uint32_t get_midi_event_count (void* port_buffer); + void midi_clear (void* port_buffer); + + /* Monitoring */ + + bool can_monitor_input () const; + int request_input_monitoring (PortHandle, bool); + int ensure_input_monitoring (PortHandle, bool); + bool monitoring_input (PortHandle); + + /* Latency management */ + + void set_latency_range (PortHandle, bool for_playback, LatencyRange); + LatencyRange get_latency_range (PortHandle, bool for_playback); + + /* Discovering physical ports */ + + bool port_is_physical (PortHandle) const; + void get_physical_outputs (DataType type, std::vector<std::string>&); + void get_physical_inputs (DataType type, std::vector<std::string>&); + ChanCount n_physical_outputs () const; + ChanCount n_physical_inputs () const; + + /* Getting access to the data buffer for a port */ + + void* get_buffer (PortHandle, pframes_t); + + void* freewheel_thread (); + void pre_process (); + + private: + std::string _instance_name; + //ASIOPCM *_pcmio; // TODO + //WindowsMidiIo *_midiio; // TODO + + bool _run; /* keep going or stop, ardour thread */ + bool _active_cb; /* is running, asio callback */ + bool _active_fw; /* is running, freewheel thread */ + bool _preinit; + bool _freewheeling; + bool _freewheel; + bool _freewheel_ack; + bool _reinit_thread_callback; + bool _measure_latency; + + uint64_t _last_process_start; + + pthread_mutex_t _process_callback_mutex; + + pthread_mutex_t _freewheel_mutex; + pthread_cond_t _freewheel_signal; + + static std::vector<std::string> _midi_options; + static std::vector<AudioBackend::DeviceStatus> _audio_device_status; + static std::vector<AudioBackend::DeviceStatus> _midi_device_status; + + mutable std::string _audio_device; + std::string _midi_driver_option; + + /* audio settings */ + float _samplerate; + size_t _samples_per_period; + static size_t _max_buffer_size; + + uint32_t _n_inputs; + uint32_t _n_outputs; + + uint32_t _systemic_audio_input_latency; + uint32_t _systemic_audio_output_latency; + + /* processing */ + float _dsp_load; + uint64_t _processed_samples; + + pthread_t _main_thread; + pthread_t _freeewheel_thread; + + /* process threads */ + static void* asio_process_thread (void *); + std::vector<pthread_t> _threads; + + struct ThreadData { + ASIOBackend* engine; + boost::function<void ()> f; + size_t stacksize; + + ThreadData (ASIOBackend* e, boost::function<void ()> fp, size_t stacksz) + : engine (e) , f (fp) , stacksize (stacksz) {} + }; + + /* port engine */ + PortHandle add_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags); + int register_system_audio_ports (); + void unregister_ports (bool system_only = false); + + std::vector<ASIOBackendPort *> _ports; + std::vector<ASIOBackendPort *> _system_inputs; + std::vector<ASIOBackendPort *> _system_outputs; + std::vector<ASIOBackendPort *> _system_midi_in; + std::vector<ASIOBackendPort *> _system_midi_out; + + struct PortConnectData { + std::string a; + std::string b; + bool c; + + PortConnectData (const std::string& a, const std::string& b, bool c) + : a (a) , b (b) , c (c) {} + }; + + std::vector<PortConnectData *> _port_connection_queue; + pthread_mutex_t _port_callback_mutex; + bool _port_change_flag; + + void port_connect_callback (const std::string& a, const std::string& b, bool conn) { + pthread_mutex_lock (&_port_callback_mutex); + _port_connection_queue.push_back(new PortConnectData(a, b, conn)); + pthread_mutex_unlock (&_port_callback_mutex); + } + + void port_connect_add_remove_callback () { + pthread_mutex_lock (&_port_callback_mutex); + _port_change_flag = true; + pthread_mutex_unlock (&_port_callback_mutex); + } + + bool valid_port (PortHandle port) const { + return std::find (_ports.begin (), _ports.end (), (ASIOBackendPort*)port) != _ports.end (); + } + + ASIOBackendPort * find_port (const std::string& port_name) const { + for (std::vector<ASIOBackendPort*>::const_iterator it = _ports.begin (); it != _ports.end (); ++it) { + if ((*it)->name () == port_name) { + return *it; + } + } + return NULL; + } + + ASIOBackendPort * find_port_in (std::vector<ASIOBackendPort *> plist, const std::string& port_name) const { + for (std::vector<ASIOBackendPort*>::const_iterator it = plist.begin (); it != plist.end (); ++it) { + if ((*it)->name () == port_name) { + return *it; + } + } + return NULL; + } + +}; // class ASIOBackend + +} // namespace + +#endif /* __libbackend_asio_backend_h__ */ diff --git a/libs/backends/asio/rt_thread.h b/libs/backends/asio/rt_thread.h new file mode 100644 index 0000000000..0535602bf2 --- /dev/null +++ b/libs/backends/asio/rt_thread.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2014 Robin Gareus <robin@gareus.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __libbackend_portaudio_rthread_h__ +#define __libbackend_portaudio_rthread_h__ + +#include <pthread.h> +#include <sched.h> + +static int +_realtime_pthread_create ( + const int policy, int priority, const size_t stacksize, + pthread_t *thread, + void *(*start_routine) (void *), + void *arg) +{ + int rv; + + pthread_attr_t attr; + struct sched_param parm; + + const int p_min = sched_get_priority_min (policy); + const int p_max = sched_get_priority_max (policy); + priority += p_max; + if (priority > p_max) priority = p_max; + if (priority < p_min) priority = p_min; + parm.sched_priority = priority; + + pthread_attr_init (&attr); + pthread_attr_setschedpolicy (&attr, policy); + pthread_attr_setschedparam (&attr, &parm); + pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM); + pthread_attr_setinheritsched (&attr, PTHREAD_EXPLICIT_SCHED); + pthread_attr_setstacksize (&attr, stacksize); + rv = pthread_create (thread, &attr, start_routine, arg); + pthread_attr_destroy (&attr); + return rv; +} + +#endif diff --git a/libs/backends/asio/wscript b/libs/backends/asio/wscript new file mode 100644 index 0000000000..fd122192af --- /dev/null +++ b/libs/backends/asio/wscript @@ -0,0 +1,33 @@ +#!/usr/bin/env python +from waflib.extras import autowaf as autowaf +from waflib import Options +import os +import sys +import re + +I18N_PACKAGE = 'asio-backend' + +# Mandatory variables +top = '.' +out = 'build' + +def options(opt): + autowaf.set_options(opt) + +def configure(conf): + autowaf.configure(conf) + +def build(bld): + obj = bld(features = 'cxx cxxshlib') + obj.source = [ 'asio_backend.cc', +# 'asio_io.cc', +# 'mme_io.cc' + ] + obj.includes = ['.'] + obj.name = 'asio_backend' + obj.target = 'asio_backend' + obj.use = 'libardour libpbd' + obj.install_path = os.path.join(bld.env['LIBDIR'], 'backends') + obj.defines = ['PACKAGE="' + I18N_PACKAGE + '"', + 'ARDOURBACKEND_DLL_EXPORTS' + ] |