move ownership of LTC I/O ports to Session, and manage as IO objects
[ardour.git] / libs / ardour / audioengine.cc
index 69155f54b34bc15d99a595b4dbd3312a277d3853..2c57949074e2e4551cb45bccb531fb82fbe6042b 100644 (file)
 #include <jack/weakjack.h>
 
 #include "midi++/port.h"
+#include "midi++/jack_midi_port.h"
 #include "midi++/mmc.h"
 #include "midi++/manager.h"
 
-#include "ardour/amp.h"
 #include "ardour/audio_port.h"
 #include "ardour/audioengine.h"
 #include "ardour/buffer.h"
-#include "ardour/buffer_set.h"
 #include "ardour/cycle_timer.h"
-#include "ardour/event_type_map.h"
-#include "ardour/internal_return.h"
 #include "ardour/internal_send.h"
-#include "ardour/io.h"
 #include "ardour/meter.h"
 #include "ardour/midi_port.h"
-#include "ardour/process_thread.h"
 #include "ardour/port.h"
-#include "ardour/port_set.h"
+#include "ardour/process_thread.h"
 #include "ardour/session.h"
-#include "ardour/timestamps.h"
-#include "ardour/utils.h"
 
 #include "i18n.h"
 
@@ -69,25 +62,26 @@ AudioEngine* AudioEngine::_instance = 0;
 #define GET_PRIVATE_JACK_POINTER_RET(j,r) jack_client_t* _priv_jack = (jack_client_t*) (j); if (!_priv_jack) { return r; }
 
 AudioEngine::AudioEngine (string client_name, string session_uuid)
-       : ports (new Ports)
+       : _jack (0)
+       , session_remove_pending (false)
+       , session_removal_countdown (-1)
+       , _running (false)
+       , _has_run (false)
+       , _buffer_size (0)
+       , _frame_rate (0)
+       , 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)
+       , ports (new Ports)
 {
        _instance = this; /* singleton */
 
-       session_remove_pending = false;
-       _running = false;
-       _has_run = false;
-       last_monitor_check = 0;
-       monitor_check_interval = INT32_MAX;
-       _processed_frames = 0;
-       _usecs_per_cycle = 0;
-       _jack = 0;
-       _frame_rate = 0;
-       _buffer_size = 0;
-       _freewheeling = false;
-        _main_thread = 0;
-       port_remove_in_progress = false;
-
-       m_meter_thread = 0;
        g_atomic_int_set (&m_meter_exit, 0);
 
        if (connect_to_jack (client_name, session_uuid)) {
@@ -99,8 +93,10 @@ AudioEngine::AudioEngine (string client_name, string session_uuid)
 
 AudioEngine::~AudioEngine ()
 {
+       config_connection.disconnect ();
+
        {
-               Glib::Mutex::Lock tm (_process_lock);
+               Glib::Threads::Mutex::Lock tm (_process_lock);
                session_removed.signal ();
 
                if (_running) {
@@ -132,7 +128,7 @@ _thread_init_callback (void * /*arg*/)
 
        SessionEvent::create_per_thread_pool (X_("Audioengine"), 512);
 
-       MIDI::Port::set_process_thread (pthread_self());
+       MIDI::JackMIDIPort::set_process_thread (pthread_self());
 }
 
 static void
@@ -232,7 +228,7 @@ AudioEngine::stop (bool forever)
                } else {
                        jack_deactivate (_priv_jack);
                        Stopped(); /* EMIT SIGNAL */
-                       MIDI::Port::JackHalted (); /* EMIT SIGNAL */
+                       MIDI::JackMIDIPort::JackHalted (); /* EMIT SIGNAL */
                }
        }
 
@@ -316,13 +312,13 @@ AudioEngine::_xrun_callback (void *arg)
 void
 AudioEngine::_session_callback (jack_session_event_t *event, void *arg)
 {
-       printf( "helo.... " );
        AudioEngine* ae = static_cast<AudioEngine*> (arg);
        if (ae->connected()) {
                ae->JackSessionEvent ( event ); /* EMIT SIGNAL */
        }
 }
 #endif
+
 int
 AudioEngine::_graph_order_callback (void *arg)
 {
@@ -344,7 +340,20 @@ AudioEngine::_process_thread (void *arg)
 void
 AudioEngine::_freewheel_callback (int onoff, void *arg)
 {
-       static_cast<AudioEngine*>(arg)->_freewheeling = onoff;
+       static_cast<AudioEngine*>(arg)->freewheel_callback (onoff);
+}
+
+void
+AudioEngine::freewheel_callback (int onoff)
+{
+       _freewheeling = onoff;
+
+       if (onoff) {
+               _pre_freewheel_mmc_enabled = MIDI::Manager::instance()->mmc()->send_enabled ();
+               MIDI::Manager::instance()->mmc()->enable_send (false);
+       } else {
+               MIDI::Manager::instance()->mmc()->enable_send (_pre_freewheel_mmc_enabled);
+       }
 }
 
 void
@@ -367,31 +376,38 @@ void
 AudioEngine::_connect_callback (jack_port_id_t id_a, jack_port_id_t id_b, int conn, void* arg)
 {
        AudioEngine* ae = static_cast<AudioEngine*> (arg);
+       ae->connect_callback (id_a, id_b, conn);
+}
 
-       if (ae->port_remove_in_progress) {
+void
+AudioEngine::connect_callback (jack_port_id_t id_a, jack_port_id_t id_b, int conn)
+{
+       if (port_remove_in_progress) {
                return;
        }
 
-       GET_PRIVATE_JACK_POINTER (ae->_jack);
+       GET_PRIVATE_JACK_POINTER (_jack);
 
        jack_port_t* jack_port_a = jack_port_by_id (_priv_jack, id_a);
        jack_port_t* jack_port_b = jack_port_by_id (_priv_jack, id_b);
 
        boost::shared_ptr<Port> port_a;
        boost::shared_ptr<Port> port_b;
+       Ports::iterator x;
+       boost::shared_ptr<Ports> pr = ports.reader ();
 
-       boost::shared_ptr<Ports> pr = ae->ports.reader ();
-       Ports::iterator i = pr->begin ();
-       while (i != pr->end() && (port_a == 0 || port_b == 0)) {
-               if (jack_port_a == i->second->jack_port()) {
-                       port_a = i->second;
-               } else if (jack_port_b == i->second->jack_port()) {
-                       port_b = i->second;
-               }
-               ++i;
+
+       x = pr->find (make_port_name_relative (jack_port_name (jack_port_a)));
+       if (x != pr->end()) {
+               port_a = x->second;
        }
 
-       ae->PortConnectedOrDisconnected (
+       x = pr->find (make_port_name_relative (jack_port_name (jack_port_b)));
+       if (x != pr->end()) {
+               port_b = x->second;
+       }
+
+       PortConnectedOrDisconnected (
                port_a, jack_port_name (jack_port_a),
                port_b, jack_port_name (jack_port_b),
                conn == 0 ? false : true
@@ -446,7 +462,7 @@ int
 AudioEngine::process_callback (pframes_t nframes)
 {
        GET_PRIVATE_JACK_POINTER_RET(_jack,0);
-       Glib::Mutex::Lock tm (_process_lock, Glib::TRY_LOCK);
+       Glib::Threads::Mutex::Lock tm (_process_lock, Glib::Threads::TRY_LOCK);
 
        PT_TIMING_REF;
        PT_TIMING_CHECK (1);
@@ -462,18 +478,66 @@ AudioEngine::process_callback (pframes_t nframes)
                next_processed_frames = _processed_frames + nframes;
        }
 
-       if (!tm.locked() || _session == 0) {
+       if (!tm.locked()) {
                /* return having done nothing */
                _processed_frames = next_processed_frames;
                return 0;
        }
 
        if (session_remove_pending) {
+
                /* perform the actual session removal */
-               _session = 0;
-               session_remove_pending = false;
-               session_removed.signal();
+
+               if (session_removal_countdown < 0) {
+
+                       /* fade out over 1 second */
+                       session_removal_countdown = _frame_rate/2;
+                       session_removal_gain = 1.0;
+                       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 
+                          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, 
+                          so that it emerges after any outbound note ons, etc.
+                       */
+
+                       if (session_removal_countdown <= nframes) {
+                               _session->midi_panic ();
+                       }
+
+               } else {
+                       /* fade out done */
+                       _session = 0;
+                       session_removal_countdown = -1; // reset to "not in progress"
+                       session_remove_pending = false;
+                       session_removed.signal(); // wakes up thread that initiated session removal
+               }
+       }
+
+       if (_session == 0) {
+#ifdef HAVE_LTC
+               // silence LTC
+               jack_default_audio_sample_t *out;
+               boost::shared_ptr<Port> ltcport = ltc_output_port();
+               if (ltcport && ltcport->jack_port()) {
+                       out = (jack_default_audio_sample_t*) jack_port_get_buffer (ltcport->jack_port(), nframes);
+                       if (out) memset(out, 0, nframes * sizeof(jack_default_audio_sample_t));
+               }
+#endif
+
+               if (!_freewheeling) {
+                       MIDI::Manager::instance()->cycle_start(nframes);
+                       MIDI::Manager::instance()->cycle_end();
+               }
+
                _processed_frames = next_processed_frames;
+
                return 0;
        }
 
@@ -504,9 +568,13 @@ AudioEngine::process_callback (pframes_t nframes)
                }
 
        } else {
+               MIDI::Manager::instance()->cycle_start(nframes);
+
                if (_session) {
                        _session->process (nframes);
                }
+
+               MIDI::Manager::instance()->cycle_end();
        }
 
        if (_freewheeling) {
@@ -539,8 +607,6 @@ AudioEngine::process_callback (pframes_t nframes)
 
        if (_session->silent()) {
 
-               boost::shared_ptr<Ports> p = ports.reader();
-
                for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
 
                        if (i->second->sends_output()) {
@@ -549,6 +615,34 @@ AudioEngine::process_callback (pframes_t 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;
+                                       }
+                               }
+                       }
+               }
+               
+               if (session_removal_countdown > nframes) {
+                       session_removal_countdown -= nframes;
+               } else {
+                       session_removal_countdown = 0;
+               }
+
+               session_removal_gain -= (nframes * session_removal_gain_step);
+       }
+
        // Finalize ports
 
        for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
@@ -638,7 +732,7 @@ AudioEngine::jack_bufsize_callback (pframes_t nframes)
         }
 
        {
-               Glib::Mutex::Lock lm (_process_lock);
+               Glib::Threads::Mutex::Lock lm (_process_lock);
 
                boost::shared_ptr<Ports> p = ports.reader();
 
@@ -669,8 +763,7 @@ AudioEngine::start_metering_thread ()
 {
        if (m_meter_thread == 0) {
                g_atomic_int_set (&m_meter_exit, 0);
-               m_meter_thread = Glib::Thread::create (boost::bind (&AudioEngine::meter_thread, this),
-                                                      500000, true, true, Glib::THREAD_PRIORITY_NORMAL);
+               m_meter_thread = Glib::Threads::Thread::create (boost::bind (&AudioEngine::meter_thread, this));
        }
 }
 
@@ -691,7 +784,7 @@ AudioEngine::meter_thread ()
 void
 AudioEngine::set_session (Session *s)
 {
-       Glib::Mutex::Lock pl (_process_lock);
+       Glib::Threads::Mutex::Lock pl (_process_lock);
 
        SessionHandlePtr::set_session (s);
 
@@ -729,7 +822,7 @@ AudioEngine::set_session (Session *s)
 void
 AudioEngine::remove_session ()
 {
-       Glib::Mutex::Lock lm (_process_lock);
+       Glib::Threads::Mutex::Lock lm (_process_lock);
 
        if (_running) {
 
@@ -762,7 +855,7 @@ AudioEngine::port_registration_failure (const std::string& portname)
        if (p) {
                reason = string_compose (_("a port with the name \"%1\" already exists: check for duplicated track/bus names"), portname);
        } else {
-               reason = string_compose (_("No more JACK ports are available. You will need to stop %1 and restart JACK with ports if you need this many tracks."), PROGRAM_NAME);
+               reason = string_compose (_("No more JACK ports are available. You will need to stop %1 and restart JACK with more ports if you need this many tracks."), PROGRAM_NAME);
        }
 
        throw PortRegistrationFailure (string_compose (_("AudioEngine: cannot register port \"%1\": %2"), portname, reason).c_str());
@@ -1079,7 +1172,7 @@ AudioEngine::halted (void *arg)
 
        if (was_running) {
                ae->Halted(""); /* EMIT SIGNAL */
-               MIDI::Port::JackHalted (); /* EMIT SIGNAL */
+               MIDI::JackMIDIPort::JackHalted (); /* EMIT SIGNAL */
        }
 }
 
@@ -1273,9 +1366,7 @@ AudioEngine::connect_to_jack (string client_name, string session_uuid)
 {
         EnvironmentalProtectionAgency* global_epa = EnvironmentalProtectionAgency::get_global_epa ();
         boost::scoped_ptr<EnvironmentalProtectionAgency> current_epa;
-       jack_options_t options = JackNullOption;
        jack_status_t status;
-       const char *server_name = NULL;
 
         /* revert all environment settings back to whatever they were when ardour started
          */
@@ -1291,7 +1382,7 @@ AudioEngine::connect_to_jack (string client_name, string session_uuid)
            _jack = jack_client_open (jack_client_name.c_str(), JackSessionID, &status, session_uuid.c_str());
        else
 #endif
-           _jack = jack_client_open (jack_client_name.c_str(), options, &status, server_name);
+       _jack = jack_client_open (jack_client_name.c_str(), JackNullOption, &status, 0);
 
        if (_jack == NULL) {
                // error message is not useful here
@@ -1317,7 +1408,7 @@ AudioEngine::disconnect_from_jack ()
        }
 
        {
-               Glib::Mutex::Lock lm (_process_lock);
+               Glib::Threads::Mutex::Lock lm (_process_lock);
                jack_client_close (_priv_jack);
                _jack = 0;
        }
@@ -1329,7 +1420,7 @@ AudioEngine::disconnect_from_jack ()
        if (_running) {
                _running = false;
                Stopped(); /* EMIT SIGNAL */
-               MIDI::Port::JackHalted (); /* EMIT SIGNAL */
+               MIDI::JackMIDIPort::JackHalted (); /* EMIT SIGNAL */
        }
 
        return 0;
@@ -1537,3 +1628,4 @@ AudioEngine::destroy ()
        delete _instance;
        _instance = 0;
 }
+