#include "pbd/stacktrace.h"
#include "pbd/unknown_type.h"
-#include <jack/weakjack.h>
-
#include "midi++/port.h"
-#include "midi++/jack_midi_port.h"
#include "midi++/mmc.h"
-#include "midi++/manager.h"
+#include "ardour/async_midi_port.h"
#include "ardour/audio_port.h"
#include "ardour/audio_backend.h"
#include "ardour/audioengine.h"
#include "ardour/internal_send.h"
#include "ardour/meter.h"
#include "ardour/midi_port.h"
+#include "ardour/midiport_manager.h"
+#include "ardour/mtdm.h"
#include "ardour/port.h"
#include "ardour/process_thread.h"
#include "ardour/session.h"
gint AudioEngine::m_meter_exit;
AudioEngine* AudioEngine::_instance = 0;
-AudioEngine::AudioEngine (const std::string& bcn, const std::string& bsu)
- : _backend (0)
- , session_remove_pending (false)
+AudioEngine::AudioEngine ()
+ : session_remove_pending (false)
, session_removal_countdown (-1)
+ , _running (false)
+ , _freewheeling (false)
, monitor_check_interval (INT32_MAX)
, last_monitor_check (0)
, _processed_frames (0)
- , _freewheeling (false)
- , _pre_freewheel_mmc_enabled (false)
- , _usecs_per_cycle (0)
- , port_remove_in_progress (false)
, m_meter_thread (0)
, _main_thread (0)
- , backend_client_name (bcn)
- , backend_session_uuid (bsu)
+ , _mtdm (0)
+ , _measuring_latency (false)
+ , _latency_input_port (0)
+ , _latency_output_port (0)
+ , _latency_flush_frames (0)
+ , _latency_signal_latency (0)
+ , _stopped_for_latency (false)
+ , _in_destructor (false)
{
g_atomic_int_set (&m_meter_exit, 0);
+ discover_backends ();
}
AudioEngine::~AudioEngine ()
{
+ _in_destructor = true;
+ stop_metering_thread ();
drop_backend ();
-
- config_connection.disconnect ();
-
- {
- Glib::Threads::Mutex::Lock tm (_process_lock);
- session_removed.signal ();
- stop_metering_thread ();
- }
}
AudioEngine*
-AudioEngine::create (const std::string& bcn, const std::string& bsu)
+AudioEngine::create ()
{
if (_instance) {
return _instance;
}
- return new AudioEngine (bcn, bsu);
-}
-void
-AudioEngine::drop_backend ()
-{
- if (_backend) {
- _backend->stop ();
- delete _backend;
- _backend = 0;
- }
-}
-
-int
-AudioEngine::set_backend (const std::string& name)
-{
- BackendMap::iterator b = _backends.find (name);
-
- if (b == _backends.end()) {
- return -1;
- }
-
- drop_backend ();
-
- _backend = b->second;
-
- return 0;
+ _instance = new AudioEngine ();
+
+ return _instance;
}
void
SessionEvent::create_per_thread_pool (X_("Audioengine"), 512);
- MIDI::JackMIDIPort::set_process_thread (pthread_self());
+ AsyncMIDIPort::set_process_thread (pthread_self());
}
-
-
void
AudioEngine::split_cycle (pframes_t offset)
{
}
}
+int
+AudioEngine::sample_rate_change (pframes_t nframes)
+{
+ /* check for monitor input change every 1/10th of second */
+
+ monitor_check_interval = nframes / 10;
+ last_monitor_check = 0;
+
+ if (_session) {
+ _session->set_frame_rate (nframes);
+ }
+
+ SampleRateChanged (nframes); /* EMIT SIGNAL */
+
+ return 0;
+}
+
+int
+AudioEngine::buffer_size_change (pframes_t bufsiz)
+{
+ if (_session) {
+ _session->set_block_size (bufsiz);
+ last_monitor_check = 0;
+ }
+
+ return 0;
+}
/** Method called by our ::process_thread when there is work to be done.
* @param nframes Number of frames to process.
return 0;
}
+ bool return_after_remove_check = false;
+
+ if (_measuring_latency && _mtdm) {
+ /* run a normal cycle from the perspective of the PortManager
+ so that we get silence on all registered ports.
+
+ we overwrite the silence on the two ports used for latency
+ measurement.
+ */
+
+ PortManager::cycle_start (nframes);
+ PortManager::silence (nframes);
+
+ if (_latency_input_port && _latency_output_port) {
+ PortEngine& pe (port_engine());
+
+ Sample* in = (Sample*) pe.get_buffer (_latency_input_port, nframes);
+ Sample* out = (Sample*) pe.get_buffer (_latency_output_port, nframes);
+
+ _mtdm->process (nframes, in, out);
+ }
+
+ PortManager::cycle_end (nframes);
+ return_after_remove_check = true;
+
+ } else if (_latency_flush_frames) {
+
+ /* wait for the appropriate duration for the MTDM signal to
+ * drain from the ports before we revert to normal behaviour.
+ */
+
+ PortManager::cycle_start (nframes);
+ PortManager::silence (nframes);
+ PortManager::cycle_end (nframes);
+
+ if (_latency_flush_frames > nframes) {
+ _latency_flush_frames -= nframes;
+ } else {
+ _latency_flush_frames = 0;
+ }
+
+ return_after_remove_check = true;
+ }
+
if (session_remove_pending) {
/* perform the actual session removal */
if (session_removal_countdown < 0) {
/* fade out over 1 second */
- session_removal_countdown = _frame_rate/2;
+ session_removal_countdown = sample_rate()/2;
session_removal_gain = 1.0;
session_removal_gain_step = 1.0/session_removal_countdown;
}
}
+ if (return_after_remove_check) {
+ return 0;
+ }
+
if (_session == 0) {
if (!_freewheeling) {
- MIDI::Manager::instance()->cycle_start(nframes);
- MIDI::Manager::instance()->cycle_end();
+ PortManager::cycle_start (nframes);
+ PortManager::cycle_end (nframes);
}
_processed_frames = next_processed_frames;
/* tell all relevant objects that we're starting a new cycle */
InternalSend::CycleStart (nframes);
- Port::set_global_port_buffer_offset (0);
- Port::set_cycle_framecnt (nframes);
/* tell all Ports that we're starting a new cycle */
- boost::shared_ptr<Ports> p = ports.reader();
-
- for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
- i->second->cycle_start (nframes);
- }
+ PortManager::cycle_start (nframes);
/* test if we are freewheeling and there are freewheel signals connected.
ardour should act normally even when freewheeling unless /it/ is
- exporting
+ exporting (which is what Freewheel.empty() tests for).
*/
if (_freewheeling && !Freewheel.empty()) {
-
Freewheel (nframes);
-
} else {
- MIDI::Manager::instance()->cycle_start(nframes);
-
if (_session) {
_session->process (nframes);
}
-
- MIDI::Manager::instance()->cycle_end();
}
if (_freewheeling) {
}
if (last_monitor_check + monitor_check_interval < next_processed_frames) {
-
- boost::shared_ptr<Ports> p = ports.reader();
-
- for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
-
- bool x;
-
- if (i->second->last_monitor() != (x = i->second->monitoring_input ())) {
- i->second->set_last_monitor (x);
- /* XXX I think this is dangerous, due to
- a likely mutex in the signal handlers ...
- */
- i->second->MonitorInputChanged (x); /* EMIT SIGNAL */
- }
- }
+
+ PortManager::check_monitoring ();
last_monitor_check = next_processed_frames;
}
if (_session->silent()) {
-
- for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
-
- if (i->second->sends_output()) {
- i->second->get_buffer(nframes).silence(nframes);
- }
- }
+ PortManager::silence (nframes);
}
if (session_remove_pending && session_removal_countdown) {
- for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
-
- if (i->second->sends_output()) {
-
- boost::shared_ptr<AudioPort> ap = boost::dynamic_pointer_cast<AudioPort> (i->second);
- if (ap) {
- Sample* s = ap->engine_get_whole_audio_buffer ();
- gain_t g = session_removal_gain;
-
- for (pframes_t n = 0; n < nframes; ++n) {
- *s++ *= g;
- g -= session_removal_gain_step;
- }
- }
- }
- }
+ PortManager::fade_out (session_removal_gain, session_removal_gain_step, nframes);
if (session_removal_countdown > nframes) {
session_removal_countdown -= nframes;
session_removal_gain -= (nframes * session_removal_gain_step);
}
- // Finalize ports
-
- for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
- i->second->cycle_end (nframes);
- }
+ PortManager::cycle_end (nframes);
_processed_frames = next_processed_frames;
if (_session) {
- start_metering_thread ();
-
- pframes_t blocksize = _backend->get_buffer_size ();
-
- /* page in as much of the session process code as we
- can before we really start running.
- */
-
- boost::shared_ptr<Ports> p = ports.reader();
+ pframes_t blocksize = samples_per_cycle ();
- for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
- i->second->cycle_start (blocksize);
- }
+ PortManager::cycle_start (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
_session->process (blocksize);
- for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
- i->second->cycle_end (blocksize);
- }
+ PortManager::cycle_end (blocksize);
}
}
if (_running) {
- stop_metering_thread ();
-
if (_session) {
session_remove_pending = true;
+ session_removal_countdown = 0;
session_removed.wait(_process_lock);
}
stop_metering_thread ();
_running = false;
- _buffer_size = 0;
- _frame_rate = 0;
}
int
AudioEngine::discover_backends ()
{
vector<std::string> backend_modules;
- AudioBackend* backend;
_backends.clear ();
- Glib::PatternSpec so_extension_pattern("*.so");
- Glib::PatternSpec dylib_extension_pattern("*.dylib");
+ Glib::PatternSpec so_extension_pattern("*backend.so");
+ Glib::PatternSpec dylib_extension_pattern("*backend.dylib");
+ Glib::PatternSpec dll_extension_pattern("*backend.dll");
find_matching_files_in_search_path (backend_search_path (),
so_extension_pattern, backend_modules);
find_matching_files_in_search_path (backend_search_path (),
dylib_extension_pattern, backend_modules);
- DEBUG_TRACE (DEBUG::Panning, string_compose (_("looking for backends in %1"), backend_search_path().to_string()));
+ find_matching_files_in_search_path (backend_search_path (),
+ dll_extension_pattern, backend_modules);
+
+ DEBUG_TRACE (DEBUG::Panning, string_compose (_("looking for backends in %1\n"), backend_search_path().to_string()));
for (vector<std::string>::iterator i = backend_modules.begin(); i != backend_modules.end(); ++i) {
- if ((backend = backend_discover (*i)) != 0) {
- _backends.insert (make_pair (backend->name(), backend));
+
+ AudioBackendInfo* info;
+
+ if ((info = backend_discover (*i)) != 0) {
+ _backends.insert (make_pair (info->name, info));
}
}
return _backends.size();
}
-AudioBackend*
+AudioBackendInfo*
AudioEngine::backend_discover (const string& path)
{
- Glib::Module* module = new Glib::Module(path);
- AudioBackend* (*dfunc)(void);
+ Glib::Module module (path);
+ AudioBackendInfo* info;
+ AudioBackendInfo* (*dfunc)(void);
void* func = 0;
if (!module) {
error << string_compose(_("AudioEngine: cannot load module \"%1\" (%2)"), path,
- Glib::Module::get_last_error()) << endmsg;
- delete module;
+ Glib::Module::get_last_error()) << endmsg;
return 0;
}
-
- if (!module->get_symbol("backend_factory", func)) {
- error << string_compose(_("AudioEngine: module \"%1\" has no factory function."), path) << endmsg;
+
+ if (!module.get_symbol ("descriptor", func)) {
+ error << string_compose(_("AudioEngine: backend at \"%1\" has no descriptor function."), path) << endmsg;
error << Glib::Module::get_last_error() << endmsg;
- delete module;
return 0;
}
- dfunc = (AudioBackend* (*)(void))func;
- AudioBackend* backend = dfunc();
+ module.make_resident ();
+
+ dfunc = (AudioBackendInfo* (*)(void))func;
+ info = dfunc();
+
+ return info;
+}
- return backend;
+vector<const AudioBackendInfo*>
+AudioEngine::available_backends() const
+{
+ vector<const AudioBackendInfo*> r;
+
+ for (BackendMap::const_iterator i = _backends.begin(); i != _backends.end(); ++i) {
+ r.push_back (i->second);
+ }
+
+ return r;
}
-/* BACKEND PROXY WRAPPERS */
+string
+AudioEngine::current_backend_name() const
+{
+ if (_backend) {
+ return _backend->name();
+ }
+ return string();
+}
-int
-AudioEngine::start ()
+void
+AudioEngine::drop_backend ()
{
- if (!_backend) {
- return -1;
+ if (_backend) {
+ _backend->stop ();
+ _backend.reset ();
}
+}
- if (!_running) {
+boost::shared_ptr<AudioBackend>
+AudioEngine::set_default_backend ()
+{
+ if (_backends.empty()) {
+ return boost::shared_ptr<AudioBackend>();
+ }
- if (_session) {
- BootMessage (_("Connect session to engine"));
- _session->set_frame_rate (_backend->sample_rate());
- }
+ return set_backend (_backends.begin()->first, "", "");
+}
- _processed_frames = 0;
- last_monitor_check = 0;
+boost::shared_ptr<AudioBackend>
+AudioEngine::set_backend (const std::string& name, const std::string& arg1, const std::string& arg2)
+{
+ BackendMap::iterator b = _backends.find (name);
- if (_backend->start() == 0) {
- _running = true;
- _has_run = true;
- Running(); /* EMIT SIGNAL */
- } else {
- /* should report error? */
+ if (b == _backends.end()) {
+ return boost::shared_ptr<AudioBackend>();
+ }
+
+ drop_backend ();
+
+ try {
+ if (b->second->instantiate (arg1, arg2)) {
+ throw failed_constructor ();
}
+
+ _backend = b->second->factory (*this);
+
+ } catch (exception& e) {
+ error << string_compose (_("Could not create backend for %1: %2"), name, e.what()) << endmsg;
+ return boost::shared_ptr<AudioBackend>();
}
-
- return _running ? 0 : -1;
+
+ return _backend;
}
+/* BACKEND PROXY WRAPPERS */
+
int
-AudioEngine::stop ()
+AudioEngine::start (bool for_latency)
{
if (!_backend) {
+ return -1;
+ }
+
+ if (_running) {
return 0;
}
+
+ _processed_frames = 0;
+ last_monitor_check = 0;
+
+ if (_backend->start (for_latency)) {
+ return -1;
+ }
+
+ _running = true;
+
+ if (_session) {
+ _session->set_frame_rate (_backend->sample_rate());
+
+ if (_session->config.get_jack_time_master()) {
+ _backend->set_time_master (true);
+ }
+ }
+
+ start_metering_thread ();
+
+ if (!for_latency) {
+ Running(); /* EMIT SIGNAL */
+ }
- return _backend->stop ();
+ return 0;
}
int
-AudioEngine::pause ()
+AudioEngine::stop (bool for_latency)
{
if (!_backend) {
return 0;
}
+
+ Glib::Threads::Mutex::Lock lm (_process_lock);
+
+ if (_backend->stop ()) {
+ return -1;
+ }
+
+ _running = false;
+ _processed_frames = 0;
+ _measuring_latency = false;
+ _latency_output_port = 0;
+ _latency_input_port = 0;
+ _started_for_latency = false;
+ stop_metering_thread ();
+
+ Port::PortDrop ();
+
+ if (!for_latency) {
+ Stopped (); /* EMIT SIGNAL */
+ }
- return _backend->pause ();
+ return 0;
}
int
if (!_backend) {
return 0.0;
}
- return _backend->get_cpu_load ();
+ return _backend->cpu_load ();
+}
+
+bool
+AudioEngine::is_realtime() const
+{
+ if (!_backend) {
+ return false;
+ }
+
+ return _backend->is_realtime();
+}
+
+bool
+AudioEngine::connected() const
+{
+ if (!_backend) {
+ return false;
+ }
+
+ return _backend->available();
}
void
if (!_backend) {
return 0;
}
- return _backend->samples_per_cycle ();
+ return _backend->buffer_size ();
}
int
if (!_backend) {
return -1;
}
- return _backend->start ();
+ return _backend->usecs_per_cycle ();
}
size_t
}
int
-AudioEngine::create_process_thread (boost::function<void()> func, pthread_t* thr, size_t stacksize)
+AudioEngine::create_process_thread (boost::function<void()> func)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->create_process_thread (func);
+}
+
+int
+AudioEngine::join_process_threads ()
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->join_process_threads ();
+}
+
+bool
+AudioEngine::in_process_thread ()
+{
+ if (!_backend) {
+ return false;
+ }
+ return _backend->in_process_thread ();
+}
+
+uint32_t
+AudioEngine::process_thread_count ()
+{
+ if (!_backend) {
+ return 0;
+ }
+ return _backend->process_thread_count ();
+}
+
+int
+AudioEngine::set_device_name (const std::string& name)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_device_name (name);
+}
+
+int
+AudioEngine::set_sample_rate (float sr)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_sample_rate (sr);
+}
+
+int
+AudioEngine::set_buffer_size (uint32_t bufsiz)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_buffer_size (bufsiz);
+}
+
+int
+AudioEngine::set_sample_format (SampleFormat sf)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_sample_format (sf);
+}
+
+int
+AudioEngine::set_interleaved (bool yn)
{
if (!_backend) {
return -1;
}
- return _backend->create_process_thread (func, thr, stacksize);
+ return _backend->set_interleaved (yn);
}
+int
+AudioEngine::set_input_channels (uint32_t ic)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_input_channels (ic);
+}
+
+int
+AudioEngine::set_output_channels (uint32_t oc)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_output_channels (oc);
+}
+
+int
+AudioEngine::set_systemic_input_latency (uint32_t il)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_systemic_input_latency (il);
+}
+
+int
+AudioEngine::set_systemic_output_latency (uint32_t ol)
+{
+ if (!_backend) {
+ return -1;
+ }
+ return _backend->set_systemic_output_latency (ol);
+}
+
+/* END OF BACKEND PROXY API */
+
+void
+AudioEngine::thread_init_callback (void* arg)
+{
+ /* make sure that anybody who needs to know about this thread
+ knows about it.
+ */
+
+ pthread_set_name (X_("audioengine"));
+
+ PBD::notify_gui_about_thread_creation ("gui", pthread_self(), X_("AudioEngine"), 4096);
+ PBD::notify_gui_about_thread_creation ("midiui", pthread_self(), X_("AudioEngine"), 128);
+
+ SessionEvent::create_per_thread_pool (X_("AudioEngine"), 512);
+
+ AsyncMIDIPort::set_process_thread (pthread_self());
+
+ if (arg) {
+ /* the special thread created/managed by the backend */
+ AudioEngine::instance()->_main_thread = new ProcessThread;
+ }
+}
+
+int
+AudioEngine::sync_callback (TransportState state, framepos_t position)
+{
+ if (_session) {
+ return _session->backend_sync_callback (state, position);
+ }
+ return 0;
+}
+
+void
+AudioEngine::freewheel_callback (bool onoff)
+{
+ _freewheeling = onoff;
+}
+
+void
+AudioEngine::latency_callback (bool for_playback)
+{
+ if (_session) {
+ _session->update_latency (for_playback);
+ }
+}
+
+void
+AudioEngine::update_latencies ()
+{
+ if (_backend) {
+ _backend->update_latencies ();
+ }
+}
+
+void
+AudioEngine::halted_callback (const char* why)
+{
+ if (_in_destructor) {
+ /* everything is under control */
+ return;
+ }
+
+ stop_metering_thread ();
+ _running = false;
+
+ Port::PortDrop (); /* EMIT SIGNAL */
+
+ if (!_started_for_latency) {
+ Halted (why); /* EMIT SIGNAL */
+ }
+}
+
+bool
+AudioEngine::setup_required () const
+{
+ /* If there is only a single backend and it claims to be configured
+ * already there is no setup to be done.
+ *
+ * Primarily for a case where there is only a JACK backend and
+ * JACK is already running.
+ */
+
+ if (_backends.size() == 1 && _backends.begin()->second->already_configured()) {
+ return false;
+ }
+
+ return true;
+}
+
+MTDM*
+AudioEngine::mtdm()
+{
+ return _mtdm;
+}
+
+int
+AudioEngine::prepare_for_latency_measurement ()
+{
+ if (running()) {
+ _stopped_for_latency = true;
+ stop (true);
+ }
+
+ if (start (true)) {
+ _started_for_latency = true;
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+AudioEngine::start_latency_detection ()
+{
+ if (!running()) {
+ if (prepare_for_latency_measurement ()) {
+ return -1;
+ }
+ }
+
+ PortEngine& pe (port_engine());
+
+ delete _mtdm;
+ _mtdm = 0;
+
+ /* find the ports we will connect to */
+
+ PortEngine::PortHandle out = pe.get_port_by_name (_latency_output_name);
+ PortEngine::PortHandle in = pe.get_port_by_name (_latency_input_name);
+
+ if (!out || !in) {
+ stop (true);
+ return -1;
+ }
+
+ /* create the ports we will use to read/write data */
+
+ if ((_latency_output_port = pe.register_port ("latency_out", DataType::AUDIO, IsOutput)) == 0) {
+ stop (true);
+ return -1;
+ }
+ if (pe.connect (_latency_output_port, _latency_output_name)) {
+ pe.unregister_port (_latency_output_port);
+ stop (true);
+ return -1;
+ }
+
+ const string portname ("latency_in");
+ if ((_latency_input_port = pe.register_port (portname, DataType::AUDIO, IsInput)) == 0) {
+ pe.unregister_port (_latency_output_port);
+ stop (true);
+ return -1;
+ }
+ if (pe.connect (_latency_input_name, make_port_name_non_relative (portname))) {
+ pe.unregister_port (_latency_output_port);
+ stop (true);
+ return -1;
+ }
+
+ LatencyRange lr;
+ _latency_signal_latency = 0;
+ lr = pe.get_latency_range (in, false);
+ _latency_signal_latency = lr.max;
+ lr = pe.get_latency_range (out, true);
+ _latency_signal_latency += lr.max;
+
+ /* all created and connected, lets go */
+
+ _mtdm = new MTDM (sample_rate());
+ _measuring_latency = true;
+ _latency_flush_frames = samples_per_cycle();
+
+ return 0;
+}
+
+void
+AudioEngine::stop_latency_detection ()
+{
+ _measuring_latency = false;
+
+ if (_latency_output_port) {
+ port_engine().unregister_port (_latency_output_port);
+ _latency_output_port = 0;
+ }
+ if (_latency_input_port) {
+ port_engine().unregister_port (_latency_input_port);
+ _latency_input_port = 0;
+ }
+
+ stop (true);
+
+ if (_stopped_for_latency) {
+ start ();
+ }
+
+ _stopped_for_latency = false;
+ _started_for_latency = false;
+}
+
+void
+AudioEngine::set_latency_output_port (const string& name)
+{
+ _latency_output_name = name;
+}
+
+void
+AudioEngine::set_latency_input_port (const string& name)
+{
+ _latency_input_name = name;
+}
projects / ardour.git / blobdiff