#include <exception>
#include <stdexcept>
#include <sstream>
+#include <cmath>
#include <glibmm/timer.h>
#include <glibmm/pattern.h>
#include "pbd/stacktrace.h"
#include "pbd/unknown_type.h"
-#include <jack/weakjack.h>
-
#include "midi++/port.h"
#include "midi++/mmc.h"
#include "ardour/audio_port.h"
#include "ardour/audio_backend.h"
#include "ardour/audioengine.h"
-#include "ardour/backend_search_path.h"
+#include "ardour/search_paths.h"
#include "ardour/buffer.h"
#include "ardour/cycle_timer.h"
#include "ardour/internal_send.h"
#include "ardour/meter.h"
#include "ardour/midi_port.h"
#include "ardour/midiport_manager.h"
+#include "ardour/mididm.h"
+#include "ardour/mtdm.h"
#include "ardour/port.h"
#include "ardour/process_thread.h"
#include "ardour/session.h"
using namespace ARDOUR;
using namespace PBD;
-gint AudioEngine::m_meter_exit;
AudioEngine* AudioEngine::_instance = 0;
+#ifdef SILENCE_AFTER
+#define SILENCE_AFTER_SECONDS 600
+#endif
+
AudioEngine::AudioEngine ()
: session_remove_pending (false)
, session_removal_countdown (-1)
, monitor_check_interval (INT32_MAX)
, last_monitor_check (0)
, _processed_frames (0)
- , _pre_freewheel_mmc_enabled (false)
, m_meter_thread (0)
, _main_thread (0)
+ , _mtdm (0)
+ , _mididm (0)
+ , _measuring_latency (MeasureNone)
+ , _latency_input_port (0)
+ , _latency_output_port (0)
+ , _latency_flush_frames (0)
+ , _latency_signal_latency (0)
+ , _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);
+ reset_silence_countdown ();
+ start_hw_event_processing();
discover_backends ();
}
AudioEngine::~AudioEngine ()
{
+ _in_destructor = true;
+ stop_hw_event_processing();
drop_backend ();
-
- config_connection.disconnect ();
-
- {
- Glib::Threads::Mutex::Lock tm (_process_lock);
- session_removed.signal ();
- stop_metering_thread ();
+ for (BackendMap::const_iterator i = _backends.begin(); i != _backends.end(); ++i) {
+ i->second->deinstantiate();
}
}
}
_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) {
last_monitor_check = 0;
}
+ BufferSizeChanged (bufsiz); /* EMIT SIGNAL */
+
return 0;
}
/** Method called by our ::process_thread when there is work to be done.
* @param nframes Number of frames to process.
*/
+#ifdef __clang__
+__attribute__((annotate("realtime")))
+#endif
int
AudioEngine::process_callback (pframes_t nframes)
{
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);
+
+ 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 (_measuring_latency == MeasureMIDI && _mididm) {
+ /* 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());
+
+ _mididm->process (nframes, pe,
+ pe.get_buffer (_latency_input_port, nframes),
+ pe.get_buffer (_latency_output_port, nframes));
+ }
+
+ 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 */
/* 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 (return_after_remove_check) {
+ return 0;
+ }
+
if (_session == 0) {
if (!_freewheeling) {
*/
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;
}
+#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);
}
+#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::stop_metering_thread ()
+AudioEngine::launch_device_control_app()
{
- if (m_meter_thread) {
- g_atomic_int_set (&m_meter_exit, 1);
- m_meter_thread->join ();
- m_meter_thread = 0;
+ if (_state_lock.trylock () ) {
+ _backend->launch_control_app ();
+ _state_lock.unlock ();
}
}
+
void
-AudioEngine::start_metering_thread ()
+AudioEngine::request_backend_reset()
{
- 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));
- }
+ Glib::Threads::Mutex::Lock guard (_reset_request_lock);
+ g_atomic_int_inc (&_hw_reset_request_count);
+ _hw_reset_condition.signal ();
+}
+
+int
+AudioEngine::backend_reset_requested()
+{
+ return g_atomic_int_get (&_hw_reset_request_count);
}
void
-AudioEngine::meter_thread ()
+AudioEngine::do_reset_backend()
{
- pthread_set_name (X_("meter"));
+ 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);
+
+ std::cout << "AudioEngine::RESET::Reset request processing. Requests left: " << _hw_reset_request_count << std::endl;
+ DeviceResetStarted(); // notify about device reset to be started
+
+ // backup the device name
+ std::string name = _backend->device_name ();
+
+ std::cout << "AudioEngine::RESET::Reseting device..." << std::endl;
+ if ( ( 0 == stop () ) &&
+ ( 0 == _backend->reset_device () ) &&
+ ( 0 == start () ) ) {
+
+ std::cout << "AudioEngine::RESET::Engine started..." << std::endl;
+
+ // inform about possible changes
+ BufferSizeChanged (_backend->buffer_size() );
+ 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);
- while (true) {
- Glib::usleep (10000); /* 1/100th sec interval */
- if (g_atomic_int_get(&m_meter_exit)) {
- break;
}
- Metering::Meter ();
}
}
+void
+AudioEngine::request_device_list_update()
+{
+ Glib::Threads::Mutex::Lock guard (_devicelist_update_lock);
+ g_atomic_int_inc (&_hw_devicelist_update_count);
+ _hw_devicelist_update_condition.signal ();
+}
+
+
+void
+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_devicelist_update_thread = Glib::Threads::Thread::create (boost::bind (&AudioEngine::do_devicelist_update, this));
+ }
+}
+
+
+void
+AudioEngine::stop_hw_event_processing()
+{
+ if (_hw_reset_event_thread) {
+ g_atomic_int_set(&_stop_hw_reset_processing, 1);
+ g_atomic_int_set(&_hw_reset_request_count, 0);
+ _hw_reset_condition.signal ();
+ _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_condition.signal ();
+ _hw_devicelist_update_thread->join ();
+ _hw_devicelist_update_thread = 0;
+ }
+
+}
+
void
AudioEngine::set_session (Session *s)
if (_running) {
- stop_metering_thread ();
-
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::died ()
+AudioEngine::reconnect_session_routes (bool reconnect_inputs, bool reconnect_outputs)
{
- /* called from a signal handler for SIGPIPE */
+#ifdef USE_TRACKS_CODE_FEATURES
+ if (_session) {
+ _session->reconnect_existing_routes(true, true, reconnect_inputs, reconnect_outputs);
+ }
+#endif
+}
- stop_metering_thread ();
- _running = false;
+void
+AudioEngine::died ()
+{
+ /* called from a signal handler for SIGPIPE */
+ _running = false;
}
int
Glib::PatternSpec so_extension_pattern("*backend.so");
Glib::PatternSpec dylib_extension_pattern("*backend.dylib");
- find_matching_files_in_search_path (backend_search_path (),
- so_extension_pattern, backend_modules);
+#if defined(PLATFORM_WINDOWS) && defined(DEBUGGABLE_BACKENDS)
+ #if defined(DEBUG) || defined(_DEBUG)
+ Glib::PatternSpec dll_extension_pattern("*backendD.dll");
+ #else
+ Glib::PatternSpec dll_extension_pattern("*backendRDC.dll");
+ #endif
+#else
+ Glib::PatternSpec dll_extension_pattern("*backend.dll");
+#endif
+
+ find_files_matching_pattern (backend_modules, backend_search_path (),
+ so_extension_pattern);
- find_matching_files_in_search_path (backend_search_path (),
- dylib_extension_pattern, backend_modules);
+ find_files_matching_pattern (backend_modules, backend_search_path (),
+ dylib_extension_pattern);
- DEBUG_TRACE (DEBUG::Panning, string_compose (_("looking for backends in %1\n"), backend_search_path().to_string()));
+ find_files_matching_pattern (backend_modules, backend_search_path (),
+ dll_extension_pattern);
+
+ DEBUG_TRACE (DEBUG::AudioEngine, 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) {
AudioBackendInfo* info;
+ DEBUG_TRACE (DEBUG::AudioEngine, string_compose ("Checking possible backend in %1\n", *i));
+
if ((info = backend_discover (*i)) != 0) {
_backends.insert (make_pair (info->name, info));
}
}
+ DEBUG_TRACE (DEBUG::AudioEngine, string_compose ("Found %1 backends\n", _backends.size()));
+
return _backends.size();
}
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;
- void* sym = 0;
+ AudioBackendInfo* (*dfunc)(void);
+ void* func = 0;
if (!module) {
error << string_compose(_("AudioEngine: cannot load module \"%1\" (%2)"), path,
Glib::Module::get_last_error()) << endmsg;
return 0;
}
-
- if (!module.get_symbol ("descriptor", sym)) {
- error << string_compose(_("AudioEngine: backend at \"%1\" has no descriptor."), 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;
return 0;
}
+ dfunc = (AudioBackendInfo* (*)(void))func;
+ info = dfunc();
+ if (!info->available()) {
+ return 0;
+ }
+
module.make_resident ();
-
- info = (AudioBackendInfo*) sym;
-
+
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;
}
}
+boost::shared_ptr<AudioBackend>
+AudioEngine::set_default_backend ()
+{
+ if (_backends.empty()) {
+ return boost::shared_ptr<AudioBackend>();
+ }
+
+ return set_backend (_backends.begin()->first, "", "");
+}
+
boost::shared_ptr<AudioBackend>
AudioEngine::set_backend (const std::string& name, const std::string& arg1, const std::string& arg2)
{
}
drop_backend ();
-
+
try {
if (b->second->instantiate (arg1, arg2)) {
throw failed_constructor ();
}
- _backend = b->second->backend_factory (*this);
- _impl = b->second->portengine_factory (*this);
+ _backend = b->second->factory (*this);
} catch (exception& e) {
error << string_compose (_("Could not create backend for %1: %2"), name, e.what()) << endmsg;
/* BACKEND PROXY WRAPPERS */
int
-AudioEngine::start ()
+AudioEngine::start (bool for_latency)
{
if (!_backend) {
return -1;
return 0;
}
- /* if we're still connected (i.e. previously paused), no need to
- * re-register ports.
- */
-
- bool have_ports = (!ports.reader()->empty());
-
_processed_frames = 0;
last_monitor_check = 0;
-
- if (_backend->start()) {
+
+ 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);
}
+
}
-
- if (!have_ports) {
- PortManager::create_ports ();
- _mmc.set_ports (mmc_input_port(), mmc_output_port());
+
+ if (!for_latency) {
+ Running(); /* EMIT SIGNAL */
}
-
- start_metering_thread ();
-
- Running(); /* EMIT SIGNAL */
-
+
return 0;
}
int
-AudioEngine::stop ()
+AudioEngine::stop (bool for_latency)
{
+ bool stop_engine = true;
+
if (!_backend) {
return 0;
}
- Glib::Threads::Mutex::Lock lm (_process_lock);
+ Glib::Threads::Mutex::Lock pl (_process_lock, Glib::Threads::NOT_LOCK);
- if (_backend->stop ()) {
- return -1;
+ 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 ();
+ }
+
+ if (stop_engine) {
+ _running = false;
}
-
- _running = false;
_processed_frames = 0;
- stop_metering_thread ();
-
- Port::PortDrop ();
- Stopped (); /* EMIT SIGNAL */
-
- return 0;
-}
+ _measuring_latency = MeasureNone;
+ _latency_output_port = 0;
+ _latency_input_port = 0;
+ _started_for_latency = false;
-int
-AudioEngine::pause ()
-{
- if (!_backend) {
- return 0;
+ if (stop_engine) {
+ Port::PortDrop ();
}
-
- if (_backend->pause ()) {
- return -1;
+
+ if (!for_latency && stop_engine) {
+ Stopped (); /* EMIT SIGNAL */
}
- _running = false;
-
- Stopped(); /* EMIT SIGNAL */
return 0;
}
}
float
-AudioEngine::get_cpu_load() const
+AudioEngine::get_dsp_load() const
{
- if (!_backend) {
+ if (!_backend || !_running) {
return 0.0;
}
- return _backend->cpu_load ();
+ 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->connected();
+ return _backend->available();
}
void
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) {
}
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, thr, stacksize);
+ return _backend->create_process_thread (func);
}
-
int
-AudioEngine::set_device_name (const std::string& name)
+AudioEngine::join_process_threads ()
{
if (!_backend) {
return -1;
}
- return _backend->set_device_name (name);
+ 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_sample_rate (float sr)
+AudioEngine::set_device_name (const std::string& name)
{
if (!_backend) {
return -1;
}
- return _backend->set_sample_rate (sr);
+ return _backend->set_device_name (name);
}
int
-AudioEngine::set_buffer_size (uint32_t bufsiz)
+AudioEngine::set_sample_rate (float sr)
{
if (!_backend) {
return -1;
}
- return _backend->set_buffer_size (bufsiz);
+
+ return _backend->set_sample_rate (sr);
}
int
-AudioEngine::set_sample_format (SampleFormat sf)
+AudioEngine::set_buffer_size (uint32_t bufsiz)
{
if (!_backend) {
return -1;
}
- return _backend->set_sample_format (sf);
+ return _backend->set_buffer_size (bufsiz);
}
int
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);
+ PBD::notify_gui_about_thread_creation ("gui", pthread_self(), X_("AudioEngine"), 4096);
+ PBD::notify_gui_about_thread_creation ("midiUI", pthread_self(), X_("AudioEngine"), 128);
+
AsyncMIDIPort::set_process_thread (pthread_self());
if (arg) {
}
}
-/* XXXX
-void
-AudioEngine::timebase_callback (TransportState state, pframes_t nframes, jack_position_t pos, int new_position)
-{
- if (_session && _session->synced_to_jack()) {
- // _session->timebase_callback (state, nframes, pos, new_position);
- }
-}
-*/
-
int
AudioEngine::sync_callback (TransportState state, framepos_t position)
{
if (_session) {
- return _session->jack_sync_callback (state, position);
+ return _session->backend_sync_callback (state, position);
}
return 0;
}
void
AudioEngine::freewheel_callback (bool onoff)
{
- if (onoff) {
- _pre_freewheel_mmc_enabled = _mmc.send_enabled ();
- _mmc.enable_send (false);
- } else {
- _mmc.enable_send (_pre_freewheel_mmc_enabled);
- }
+ _freewheeling = onoff;
}
void
void
AudioEngine::halted_callback (const char* why)
{
- stop_metering_thread ();
+ if (_in_destructor) {
+ /* everything is under control */
+ return;
+ }
+
+ _running = false;
Port::PortDrop (); /* EMIT SIGNAL */
- Halted (why); /* EMIT SIGNAL */
+
+ if (!_started_for_latency) {
+ Halted (why); /* EMIT SIGNAL */
+ }
}
bool
AudioEngine::setup_required () const
{
- if (_backends.size() == 1 && _backends.begin()->second->already_configured()) {
- return false;
+ if (_backend) {
+ if (_backend->info().already_configured())
+ return false;
+ } else {
+ if (_backends.size() == 1 && _backends.begin()->second->already_configured()) {
+ 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)) {
+ return -1;
+ }
+ _started_for_latency = true;
+
+ return 0;
+}
+
+int
+AudioEngine::start_latency_detection (bool for_midi)
+{
+ if (prepare_for_latency_measurement ()) {
+ return -1;
+ }
+
+ PortEngine& pe (port_engine());
+
+ delete _mtdm;
+ _mtdm = 0;
+
+ delete _mididm;
+ _mididm = 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 (for_midi) {
+ if ((_latency_output_port = pe.register_port ("latency_out", DataType::MIDI, 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::MIDI, IsInput)) == 0) {
+ pe.unregister_port (_latency_input_port);
+ 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_input_port);
+ pe.unregister_port (_latency_output_port);
+ stop (true);
+ return -1;
+ }
+
+ _mididm = new MIDIDM (sample_rate());
+
+ } else {
+
+ 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_input_port);
+ 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_input_port);
+ pe.unregister_port (_latency_output_port);
+ stop (true);
+ return -1;
+ }
+
+ _mtdm = new MTDM (sample_rate());
+
+ }
+
+ 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 */
+ _latency_flush_frames = samples_per_cycle();
+ _measuring_latency = for_midi ? MeasureMIDI : MeasureAudio;
+
+ return 0;
+}
+
+void
+AudioEngine::stop_latency_detection ()
+{
+ _measuring_latency = MeasureNone;
+
+ 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;
+ }
+
+ if (!_backend->can_change_systemic_latency_when_running()) {
+ 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;
+}