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diff --git a/src/libs/engine/Ingen.cpp b/src/libs/engine/Ingen.cpp
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+/* This file is part of Ingen. Copyright (C) 2006 Dave Robillard.
+ *
+ * Ingen 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.
+ *
+ * Ingen 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 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "Ingen.h"
+#include "config.h"
+#include "tuning.h"
+#include <sys/mman.h>
+#include <iostream>
+#include <unistd.h>
+#include "Event.h"
+#include "util/Queue.h"
+#include "JackAudioDriver.h"
+#include "NodeFactory.h"
+#include "OSCReceiver.h"
+#include "ClientBroadcaster.h"
+#include "Patch.h"
+#include "ObjectStore.h"
+#include "MaidObject.h"
+#include "Maid.h"
+#include "MidiDriver.h"
+#include "QueuedEventSource.h"
+#include "PostProcessor.h"
+#include "CreatePatchEvent.h"
+#include "EnablePatchEvent.h"
+#ifdef HAVE_JACK_MIDI
+#include "JackMidiDriver.h"
+#endif
+#ifdef HAVE_ALSA_MIDI
+#include "AlsaMidiDriver.h"
+#endif
+#ifdef HAVE_LASH
+#include "LashDriver.h"
+#endif
+using std::cout; using std::cerr; using std::endl;
+
+namespace Om {
+
+
+Ingen* Ingen::m_instance = NULL;
+
+
+void
+Ingen::instantiate(const char* port, AudioDriver* audio_driver)
+{
+ assert(!m_instance);
+ m_instance = new Ingen(port, audio_driver);
+}
+
+
+Ingen::Ingen(const char* port, AudioDriver* audio_driver)
+: m_audio_driver( (audio_driver) ? audio_driver : new JackAudioDriver() ),
+ m_osc_receiver(new OSCReceiver(pre_processor_queue_size, port)),
+#ifdef HAVE_JACK_MIDI
+ m_midi_driver(new JackMidiDriver(((JackAudioDriver*)m_audio_driver)->jack_client())),
+#elif HAVE_ALSA_MIDI
+ m_midi_driver(new AlsaMidiDriver()),
+#else
+ m_midi_driver(new DummyMidiDriver()),
+#endif
+ m_post_processor(new PostProcessor(post_processor_queue_size)),
+ m_maid(new Maid(maid_queue_size)),
+ m_client_broadcaster(new ClientBroadcaster()),
+ m_object_store(new ObjectStore()),
+ m_node_factory(new NodeFactory()),
+#ifdef HAVE_LASH
+ m_lash_driver(new LashDriver()),
+#else
+ m_lash_driver(NULL),
+#endif
+ m_quit_flag(false),
+ m_activated(false)
+{
+ m_osc_receiver->activate();
+}
+
+
+Ingen::~Ingen()
+{
+ deactivate();
+
+ for (Tree<GraphObject*>::iterator i = m_object_store->objects().begin();
+ i != m_object_store->objects().end(); ++i) {
+ if ((*i)->parent() == NULL)
+ delete (*i);
+ }
+
+ delete m_object_store;
+ delete m_client_broadcaster;
+ delete m_osc_receiver;
+ delete m_node_factory;
+ delete m_midi_driver;
+ delete m_audio_driver;
+
+ delete m_maid;
+
+ munlockall();
+}
+
+
+/* driver() template specializations.
+ * Due to the lack of RTTI, this needs to be implemented manually like this.
+ * If more types/drivers start getting added, it may be worth it to enable
+ * RTTI and put all the drivers into a map with typeid's as the key. That's
+ * more elegant and extensible, but this is faster and simpler - for now.
+ */
+template<>
+Driver<MidiMessage>* Ingen::driver<MidiMessage>() { return m_midi_driver; }
+template<>
+Driver<Sample>* Ingen::driver<Sample>() { return m_audio_driver; }
+
+
+int
+Ingen::main()
+{
+ // Loop until quit flag is set (by OSCReceiver)
+ while ( ! m_quit_flag) {
+ nanosleep(&main_rate, NULL);
+#ifdef HAVE_LASH
+ // Process any pending LASH events
+ if (lash_driver->enabled())
+ lash_driver->process_events();
+#endif
+ // Run the maid (garbage collector)
+ m_maid->cleanup();
+ }
+ cout << "[Main] Done main loop." << endl;
+
+ if (m_activated)
+ deactivate();
+
+ sleep(1);
+ cout << "[Main] Om exiting..." << endl;
+
+ return 0;
+}
+
+
+void
+Ingen::activate()
+{
+ if (m_activated)
+ return;
+
+ // Create root patch
+ CreatePatchEvent create_ev(CountedPtr<Responder>(new Responder()), 0, "/", 1);
+ create_ev.pre_process();
+ create_ev.execute(0);
+ create_ev.post_process();
+ EnablePatchEvent enable_ev(CountedPtr<Responder>(new Responder()), 0, "/");
+ enable_ev.pre_process();
+ enable_ev.execute(0);
+ enable_ev.post_process();
+
+ assert(m_audio_driver->root_patch() != NULL);
+
+ m_audio_driver->activate();
+#ifdef HAVE_ALSA_MIDI
+ m_midi_driver->activate();
+#endif
+
+ m_post_processor->start();
+
+ m_activated = true;
+}
+
+
+void
+Ingen::deactivate()
+{
+ if (!m_activated)
+ return;
+
+ m_audio_driver->root_patch()->process(false);
+ m_audio_driver->root_patch()->deactivate();
+
+ /*for (Tree<GraphObject*>::iterator i = m_object_store->objects().begin();
+ i != m_object_store->objects().end(); ++i)
+ if ((*i)->as_node() != NULL && (*i)->as_node()->parent() == NULL)
+ (*i)->as_node()->deactivate();*/
+
+ if (m_midi_driver != NULL)
+ m_midi_driver->deactivate();
+
+ m_osc_receiver->deactivate();
+ m_audio_driver->deactivate();
+
+ // Finalize any lingering events (unlikely)
+ m_post_processor->whip();
+ m_post_processor->stop();
+
+ m_activated = false;
+}
+
+
+} // namespace Om