#include <exception>
#include <stdexcept>
#include <sstream>
+#include <cmath>
#include <glibmm/timer.h>
#include <glibmm/pattern.h>
#include "ardour/process_thread.h"
#include "ardour/session.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
-gint AudioEngine::m_meter_exit;
AudioEngine* AudioEngine::_instance = 0;
+static gint audioengine_thread_cnt = 1;
+
+#ifdef SILENCE_AFTER
+#define SILENCE_AFTER_SECONDS 600
+#endif
+
AudioEngine::AudioEngine ()
: session_remove_pending (false)
, session_removal_countdown (-1)
, _stopped_for_latency (false)
, _started_for_latency (false)
, _in_destructor (false)
+ , _last_backend_error_string(AudioBackend::get_error_string((AudioBackend::ErrorCode)-1))
, _hw_reset_event_thread(0)
, _hw_reset_request_count(0)
, _stop_hw_reset_processing(0)
, _hw_devicelist_update_thread(0)
, _hw_devicelist_update_count(0)
, _stop_hw_devicelist_processing(0)
+#ifdef SILENCE_AFTER_SECONDS
+ , _silence_countdown (0)
+ , _silence_hit_cnt (0)
+#endif
{
- g_atomic_int_set (&m_meter_exit, 0);
- start_hw_event_processing();
+ reset_silence_countdown ();
+ start_hw_event_processing();
discover_backends ();
}
AudioEngine::~AudioEngine ()
{
_in_destructor = true;
- stop_metering_thread ();
stop_hw_event_processing();
drop_backend ();
+ for (BackendMap::const_iterator i = _backends.begin(); i != _backends.end(); ++i) {
+ i->second->deinstantiate();
+ }
+ delete _main_thread;
}
AudioEngine*
}
_instance = new AudioEngine ();
-
- return _instance;
-}
-
-void
-_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());
+ return _instance;
}
void
SampleRateChanged (nframes); /* EMIT SIGNAL */
+#ifdef SILENCE_AFTER_SECONDS
+ _silence_countdown = nframes * SILENCE_AFTER_SECONDS;
+#endif
+
return 0;
}
-int
+int
AudioEngine::buffer_size_change (pframes_t bufsiz)
{
if (_session) {
if (!tm.locked()) {
/* return having done nothing */
- _processed_frames = next_processed_frames;
+ if (_session) {
+ Xrun();
+ }
+ /* really only JACK requires this
+ * (other backends clear the output buffers
+ * before the process_callback. it may even be
+ * jack/alsa only). but better safe than sorry.
+ */
+ PortManager::silence_outputs (nframes);
return 0;
}
+ /* The coreaudio-backend calls thread_init_callback() if
+ * the hardware changes or pthread_self() changes.
+ *
+ * However there are cases when neither holds true, yet
+ * the thread-pool changes: e.g. connect a headphone to
+ * a shared mic/headphone jack.
+ * It's probably related to, or caused by clocksource changes.
+ *
+ * For reasons yet unknown Glib::Threads::Private() can
+ * use a different thread-private in the same pthread
+ * (coreaudio render callback).
+ *
+ * Coreaudio must set something which influences
+ * pthread_key_t uniqness or reset the key using
+ * pthread_getspecific().
+ */
+ if (! SessionEvent::has_per_thread_pool ()) {
+ thread_init_callback (NULL);
+ }
+
bool return_after_remove_check = false;
if (_measuring_latency == MeasureAudio && _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);
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 {
/* fade out over 1 second */
session_removal_countdown = sample_rate()/2;
- session_removal_gain = 1.0;
+ session_removal_gain = GAIN_COEFF_UNITY;
session_removal_gain_step = 1.0/session_removal_countdown;
} else if (session_removal_countdown > 0) {
/* we'll be fading audio out.
-
- if this is the last time we do this as part
+
+ if this is the last time we do this as part
of session removal, do a MIDI panic now
to get MIDI stopped. This relies on the fact
that "immediate data" (aka "out of band data") from
- MIDI tracks is *appended* after any other data,
+ MIDI tracks is *appended* after any other data,
so that it emerges after any outbound note ons, etc.
*/
*/
if (_freewheeling && !Freewheel.empty()) {
- Freewheel (nframes);
+ Freewheel (nframes);
} else {
- if (_session) {
- _session->process (nframes);
- }
+ _session->process (nframes);
}
if (_freewheeling) {
+ PortManager::cycle_end (nframes);
return 0;
}
}
if (last_monitor_check + monitor_check_interval < next_processed_frames) {
-
+
PortManager::check_monitoring ();
last_monitor_check = next_processed_frames;
}
- if (_session->silent()) {
+#ifdef SILENCE_AFTER_SECONDS
+
+ bool was_silent = (_silence_countdown == 0);
+
+ if (_silence_countdown >= nframes) {
+ _silence_countdown -= nframes;
+ } else {
+ _silence_countdown = 0;
+ }
+
+ if (!was_silent && _silence_countdown == 0) {
+ _silence_hit_cnt++;
+ BecameSilent (); /* EMIT SIGNAL */
+ }
+
+ if (_silence_countdown == 0 || _session->silent()) {
PortManager::silence (nframes);
}
+#else
+ if (_session->silent()) {
+ PortManager::silence (nframes, _session);
+ }
+#endif
+
if (session_remove_pending && session_removal_countdown) {
PortManager::fade_out (session_removal_gain, session_removal_gain_step, nframes);
-
+
if (session_removal_countdown > nframes) {
session_removal_countdown -= nframes;
} else {
_processed_frames = next_processed_frames;
PT_TIMING_CHECK (2);
-
+
return 0;
}
+void
+AudioEngine::reset_silence_countdown ()
+{
+#ifdef SILENCE_AFTER_SECONDS
+ double sr = 48000; /* default in case there is no backend */
+
+ sr = sample_rate();
+
+ _silence_countdown = max (60 * sr, /* 60 seconds */
+ sr * (SILENCE_AFTER_SECONDS / ::pow (2.0, (double) _silence_hit_cnt)));
+
+#endif
+}
+
+void
+AudioEngine::launch_device_control_app()
+{
+ if (_state_lock.trylock () ) {
+ _backend->launch_control_app ();
+ _state_lock.unlock ();
+ }
+}
+
void
AudioEngine::request_backend_reset()
_hw_reset_condition.signal ();
}
+int
+AudioEngine::backend_reset_requested()
+{
+ return g_atomic_int_get (&_hw_reset_request_count);
+}
void
AudioEngine::do_reset_backend()
{
- SessionEvent::create_per_thread_pool (X_("Backend reset processing thread"), 512);
-
- Glib::Threads::Mutex::Lock guard (_reset_request_lock);
-
- while (!_stop_hw_reset_processing) {
-
- if (_hw_reset_request_count && _backend) {
+ SessionEvent::create_per_thread_pool (X_("Backend reset processing thread"), 1024);
+
+ Glib::Threads::Mutex::Lock guard (_reset_request_lock);
+
+ while (!_stop_hw_reset_processing) {
+
+ if (g_atomic_int_get (&_hw_reset_request_count) != 0 && _backend) {
_reset_request_lock.unlock();
-
+
Glib::Threads::RecMutex::Lock pl (_state_lock);
+ g_atomic_int_dec_and_test (&_hw_reset_request_count);
- g_atomic_int_dec_and_test (&_hw_reset_request_count);
+ std::cout << "AudioEngine::RESET::Reset request processing. Requests left: " << _hw_reset_request_count << std::endl;
+ DeviceResetStarted(); // notify about device reset to be started
- std::cout << "AudioEngine::RESET::Reset request processing" << std::endl;
+ // backup the device name
+ std::string name = _backend->device_name ();
- // backup the device name
- std::string name = _backend->device_name ();
-
- std::cout << "AudioEngine::RESET::Stoping engine..." << std::endl;
- stop();
+ std::cout << "AudioEngine::RESET::Reseting device..." << std::endl;
+ if ( ( 0 == stop () ) &&
+ ( 0 == _backend->reset_device () ) &&
+ ( 0 == start () ) ) {
- std::cout << "AudioEngine::RESET::Reseting device..." << std::endl;
- if ( 0 == _backend->reset_device () ) {
-
- std::cout << "AudioEngine::RESET::Starting engine..." << std::endl;
- start ();
+ std::cout << "AudioEngine::RESET::Engine started..." << std::endl;
// inform about possible changes
BufferSizeChanged (_backend->buffer_size() );
- } else {
- DeviceError();
+ DeviceResetFinished(); // notify about device reset finish
+
+ } else {
+
+ DeviceResetFinished(); // notify about device reset finish
+ // we've got an error
+ DeviceError();
}
-
+
std::cout << "AudioEngine::RESET::Done." << std::endl;
- _reset_request_lock.lock();
-
- } else {
-
- _hw_reset_condition.wait (_reset_request_lock);
-
- }
- }
-}
+ _reset_request_lock.lock();
+
+ } else {
+ _hw_reset_condition.wait (_reset_request_lock);
+ }
+ }
+}
void
AudioEngine::request_device_list_update()
{
AudioEngine::do_devicelist_update()
{
SessionEvent::create_per_thread_pool (X_("Device list update processing thread"), 512);
-
+
Glib::Threads::Mutex::Lock guard (_devicelist_update_lock);
-
+
while (!_stop_hw_devicelist_processing) {
-
+
if (_hw_devicelist_update_count) {
_devicelist_update_lock.unlock();
-
+
+ Glib::Threads::RecMutex::Lock pl (_state_lock);
+
g_atomic_int_dec_and_test (&_hw_devicelist_update_count);
DeviceListChanged (); /* EMIT SIGNAL */
-
+
_devicelist_update_lock.lock();
-
+
} else {
_hw_devicelist_update_condition.wait (_devicelist_update_lock);
}
void
AudioEngine::start_hw_event_processing()
-{
+{
if (_hw_reset_event_thread == 0) {
g_atomic_int_set(&_hw_reset_request_count, 0);
g_atomic_int_set(&_stop_hw_reset_processing, 0);
_hw_reset_event_thread = Glib::Threads::Thread::create (boost::bind (&AudioEngine::do_reset_backend, this));
}
-
+
if (_hw_devicelist_update_thread == 0) {
g_atomic_int_set(&_hw_devicelist_update_count, 0);
g_atomic_int_set(&_stop_hw_devicelist_processing, 0);
_hw_reset_event_thread->join ();
_hw_reset_event_thread = 0;
}
-
+
if (_hw_devicelist_update_thread) {
g_atomic_int_set(&_stop_hw_devicelist_processing, 1);
g_atomic_int_set(&_hw_devicelist_update_count, 0);
_hw_devicelist_update_thread->join ();
_hw_devicelist_update_thread = 0;
}
-
-}
-
-
-
-void
-AudioEngine::stop_metering_thread ()
-{
- if (m_meter_thread) {
- g_atomic_int_set (&m_meter_exit, 1);
- m_meter_thread->join ();
- m_meter_thread = 0;
- }
-}
-void
-AudioEngine::start_metering_thread ()
-{
- if (m_meter_thread == 0) {
- g_atomic_int_set (&m_meter_exit, 0);
- m_meter_thread = Glib::Threads::Thread::create (boost::bind (&AudioEngine::meter_thread, this));
- }
}
-void
-AudioEngine::meter_thread ()
-{
- pthread_set_name (X_("meter"));
-
- while (true) {
- Glib::usleep (10000); /* 1/100th sec interval */
- if (g_atomic_int_get(&m_meter_exit)) {
- break;
- }
- Metering::Meter ();
- }
-}
void
AudioEngine::set_session (Session *s)
if (_session) {
session_remove_pending = true;
- session_removal_countdown = 0;
+ /* signal the start of the fade out countdown */
+ session_removal_countdown = -1;
session_removed.wait(_process_lock);
}
void
AudioEngine::reconnect_session_routes (bool reconnect_inputs, bool reconnect_outputs)
{
- if (_session) {
- _session->reconnect_existing_routes(true, true, reconnect_inputs, reconnect_outputs);
- }
+#ifdef USE_TRACKS_CODE_FEATURES
+ if (_session) {
+ _session->reconnect_existing_routes(true, true, reconnect_inputs, reconnect_outputs);
+ }
+#endif
}
void
AudioEngine::died ()
{
- /* called from a signal handler for SIGPIPE */
-
- stop_metering_thread ();
-
- _running = false;
+ /* called from a signal handler for SIGPIPE */
+ _running = false;
}
int
AudioBackendInfo*
AudioEngine::backend_discover (const string& path)
{
+#ifdef PLATFORM_WINDOWS
+ // do not show popup dialog (e.g. missing libjack.dll)
+ // win7+ should use SetThreadErrorMode()
+ SetErrorMode(SEM_FAILCRITICALERRORS);
+#endif
Glib::Module module (path);
+#ifdef PLATFORM_WINDOWS
+ SetErrorMode(0); // reset to system default
+#endif
AudioBackendInfo* info;
AudioBackendInfo* (*dfunc)(void);
void* func = 0;
Glib::Module::get_last_error()) << endmsg;
return 0;
}
-
+
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;
return 0;
}
- module.make_resident ();
-
dfunc = (AudioBackendInfo* (*)(void))func;
info = dfunc();
-
+ if (!info->available()) {
+ return 0;
+ }
+
+ module.make_resident ();
+
return info;
}
AudioEngine::available_backends() const
{
vector<const AudioBackendInfo*> r;
-
+
for (BackendMap::const_iterator i = _backends.begin(); i != _backends.end(); ++i) {
r.push_back (i->second);
}
{
if (_backend) {
return _backend->name();
- }
+ }
return string();
}
{
if (_backend) {
_backend->stop ();
+ // Stopped is needed for Graph to explicitly terminate threads
+ Stopped (); /* EMIT SIGNAL */
_backend->drop_device ();
_backend.reset ();
_running = false;
}
drop_backend ();
-
+
try {
if (b->second->instantiate (arg1, arg2)) {
throw failed_constructor ();
}
-
+
_backend = b->second->factory (*this);
} catch (exception& e) {
_processed_frames = 0;
last_monitor_check = 0;
-
- if (_backend->start (for_latency)) {
+
+ int error_code = _backend->start (for_latency);
+
+ if (error_code != 0) {
+ _last_backend_error_string =
+ AudioBackend::get_error_string((AudioBackend::ErrorCode)error_code);
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 0;
}
int
AudioEngine::stop (bool for_latency)
{
+ bool stop_engine = true;
+
if (!_backend) {
return 0;
}
- if (_session && _running) {
+ Glib::Threads::Mutex::Lock pl (_process_lock, Glib::Threads::NOT_LOCK);
+
+ if (running()) {
+ pl.acquire ();
+ }
+
+ if (for_latency && _backend->can_change_systemic_latency_when_running()) {
+ stop_engine = false;
+ } else {
+ if (_backend->stop ()) {
+ pl.release ();
+ return -1;
+ }
+ }
+
+ if (pl.locked ()) {
+ pl.release ();
+ }
+
+ if (_session && _running && stop_engine &&
+ (_session->state_of_the_state() & Session::Loading) == 0 &&
+ (_session->state_of_the_state() & Session::Deletion) == 0) {
// it's not a halt, but should be handled the same way:
// disable record, stop transport and I/O processign but save the data.
_session->engine_halted ();
}
- Glib::Threads::Mutex::Lock lm (_process_lock);
-
- if (_backend->stop ()) {
- return -1;
+ if (stop_engine) {
+ _running = false;
}
-
- _running = false;
_processed_frames = 0;
_measuring_latency = MeasureNone;
_latency_output_port = 0;
_latency_input_port = 0;
_started_for_latency = false;
- stop_metering_thread ();
-
- Port::PortDrop ();
- if (!for_latency) {
+ if (stop_engine) {
+ Port::PortDrop ();
+ }
+
+ if (!for_latency && stop_engine) {
Stopped (); /* EMIT SIGNAL */
}
-
+
return 0;
}
}
float
-AudioEngine::get_dsp_load() const
+AudioEngine::get_dsp_load() const
{
- if (!_backend) {
+ if (!_backend || !_running) {
return 0.0;
}
return _backend->dsp_load ();
}
bool
-AudioEngine::is_realtime() const
+AudioEngine::is_realtime() const
{
if (!_backend) {
return false;
}
bool
-AudioEngine::connected() const
+AudioEngine::connected() const
{
if (!_backend) {
return false;
return _backend->raw_buffer_size (t);
}
-pframes_t
+framepos_t
AudioEngine::sample_time ()
{
if (!_backend) {
return _backend->sample_time ();
}
-pframes_t
+framepos_t
AudioEngine::sample_time_at_cycle_start ()
{
if (!_backend) {
if (!_backend) {
return -1;
}
+
return _backend->set_sample_rate (sr);
}
return _backend->set_systemic_output_latency (ol);
}
+bool
+AudioEngine::thread_initialised_for_audio_processing ()
+{
+ return SessionEvent::has_per_thread_pool () && AsyncMIDIPort::is_process_thread();
+}
+
/* END OF BACKEND PROXY API */
void
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);
+ const int thread_num = g_atomic_int_add (&audioengine_thread_cnt, 1);
+ const string thread_name = string_compose (X_("AudioEngine %1"), thread_num);
+ SessionEvent::create_per_thread_pool (thread_name, 512);
+ PBD::notify_event_loops_about_thread_creation (pthread_self(), thread_name, 4096);
AsyncMIDIPort::set_process_thread (pthread_self());
if (arg) {
+ delete AudioEngine::instance()->_main_thread;
/* the special thread created/managed by the backend */
AudioEngine::instance()->_main_thread = new ProcessThread;
}
return;
}
- stop_metering_thread ();
_running = false;
Port::PortDrop (); /* EMIT SIGNAL */
return false;
}
}
-
+
return true;
}
int
AudioEngine::prepare_for_latency_measurement ()
{
+ if (!_backend) {
+ return -1;
+ }
+
+ if (_backend->can_change_systemic_latency_when_running()) {
+ if (start()) {
+ return -1;
+ }
+ _backend->set_systemic_input_latency (0);
+ _backend->set_systemic_output_latency (0);
+ return 0;
+ }
+
if (running()) {
_stopped_for_latency = true;
stop (true);
}
if (start (true)) {
- _started_for_latency = true;
return -1;
}
+ _started_for_latency = true;
return 0;
}
int
AudioEngine::start_latency_detection (bool for_midi)
{
- if (!running()) {
- if (prepare_for_latency_measurement ()) {
- return -1;
- }
+ if (prepare_for_latency_measurement ()) {
+ return -1;
}
PortEngine& pe (port_engine());
_latency_input_port = 0;
}
- stop (true);
+ if (!_backend->can_change_systemic_latency_when_running()) {
+ stop (true);
+ }
if (_stopped_for_latency) {
start ();
projects / ardour.git / blobdiff