More work towards separating event interfaces from queueing implementation.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@4318 a436a847-0d15-0410-975c-d299462d15a1

5 files changed, 99 insertions, 13 deletions

diff --git a/src/server/EventQueue.cpp b/src/server/EventQueue.cpp
index ffafe17a..8cb979ca 100644
--- a/src/server/EventQueue.cpp
+++ b/src/server/EventQueue.cpp
@@ -39,7 +39,7 @@ EventQueue::~EventQueue()
 /** Push an unprepared event onto the queue.
  */
 void
-EventQueue::push_queued(Event* const ev)
+EventQueue::event(Event* const ev)
 {
 	assert(!ev->is_prepared());
 	assert(!ev->next());
diff --git a/src/server/EventQueue.hpp b/src/server/EventQueue.hpp
index e1adbd6b..a3567574 100644
--- a/src/server/EventQueue.hpp
+++ b/src/server/EventQueue.hpp
@@ -20,6 +20,7 @@
 #include "raul/AtomicPtr.hpp"
 #include "raul/Slave.hpp"
 
+#include "EventSink.hpp"
 #include "EventSource.hpp"
 
 namespace Ingen {
@@ -32,6 +33,7 @@ class ProcessContext;
 /** An EventSource which prepares events in its own thread.
  */
 class EventQueue : public EventSource
+                 , public EventSink
                  , public Raul::Slave
 {
 public:
@@ -44,7 +46,7 @@ public:
 	inline bool empty()             const { return !_head.get(); }
 
 protected:
-	void push_queued(Event* const ev);
+	void event(Event* ev);
 
 	virtual void _whipped(); ///< Prepare 1 event
 
diff --git a/src/server/EventSink.hpp b/src/server/EventSink.hpp
new file mode 100644
index 00000000..e24fa5e9
--- /dev/null
+++ b/src/server/EventSink.hpp
@@ -0,0 +1,37 @@
+/*
+  This file is part of Ingen.
+  Copyright 2007-2012 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or 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 Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_ENGINE_EVENTSINK_HPP
+#define INGEN_ENGINE_EVENTSINK_HPP
+
+namespace Ingen {
+namespace Server {
+
+class Event;
+
+class EventSink
+{
+public:
+	virtual ~EventSink() {}
+
+	virtual void event(Event* ev) = 0;
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_EVENTSINK_HPP
+
diff --git a/src/server/EventSource.hpp b/src/server/EventSource.hpp
new file mode 100644
index 00000000..4425586d
--- /dev/null
+++ b/src/server/EventSource.hpp
@@ -0,0 +1,47 @@
+/*
+  This file is part of Ingen.
+  Copyright 2007-2012 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or 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 Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_ENGINE_EVENTSOURCE_HPP
+#define INGEN_ENGINE_EVENTSOURCE_HPP
+
+namespace Ingen {
+namespace Server {
+
+class Event;
+class PostProcessor;
+class ProcessContext;
+
+/** Source for events to run in the audio thread.
+ *
+ * The Driver gets events from an EventQueue in the process callback and
+ * executes them, then they are sent to the PostProcessor and finalised
+ * (post-processing thread).
+ */
+class EventSource
+{
+public:
+	virtual ~EventSource() {}
+
+	virtual void process(PostProcessor&  dest,
+	                     ProcessContext& context,
+	                     bool            limit = true) = 0;
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_EVENTSOURCE_HPP
+
diff --git a/src/server/ServerInterfaceImpl.cpp b/src/server/ServerInterfaceImpl.cpp
index 492139ed..d3f151e7 100644
--- a/src/server/ServerInterfaceImpl.cpp
+++ b/src/server/ServerInterfaceImpl.cpp
@@ -94,7 +94,7 @@ ServerInterfaceImpl::put(const URI&                  uri,
                          const Resource::Properties& properties,
                          const Resource::Graph       ctx)
 {
-	push_queued(new Events::SetMetadata(_engine, _request_client, _request_id, now(), true, ctx, uri, properties));
+	event(new Events::SetMetadata(_engine, _request_client, _request_id, now(), true, ctx, uri, properties));
 }
 
 void
@@ -102,14 +102,14 @@ ServerInterfaceImpl::delta(const URI&                  uri,
                            const Resource::Properties& remove,
                            const Resource::Properties& add)
 {
-	push_queued(new Events::SetMetadata(_engine, _request_client, _request_id, now(), false, Resource::DEFAULT, uri, add, remove));
+	event(new Events::SetMetadata(_engine, _request_client, _request_id, now(), false, Resource::DEFAULT, uri, add, remove));
 }
 
 void
 ServerInterfaceImpl::move(const Path& old_path,
                           const Path& new_path)
 {
-	push_queued(new Events::Move(_engine, _request_client, _request_id, now(), old_path, new_path));
+	event(new Events::Move(_engine, _request_client, _request_id, now(), old_path, new_path));
 }
 
 void
@@ -121,7 +121,7 @@ ServerInterfaceImpl::del(const URI& uri)
 		}
 		_engine.quit();
 	} else {
-		push_queued(new Events::Delete(_engine, _request_client, _request_id, now(), uri));
+		event(new Events::Delete(_engine, _request_client, _request_id, now(), uri));
 	}
 }
 
@@ -129,7 +129,7 @@ void
 ServerInterfaceImpl::connect(const Path& tail_path,
                              const Path& head_path)
 {
-	push_queued(new Events::Connect(_engine, _request_client, _request_id, now(), tail_path, head_path));
+	event(new Events::Connect(_engine, _request_client, _request_id, now(), tail_path, head_path));
 
 }
 
@@ -143,7 +143,7 @@ ServerInterfaceImpl::disconnect(const Path& src,
 		return;
 	}
 
-	push_queued(new Events::Disconnect(_engine, _request_client, _request_id, now(),
+	event(new Events::Disconnect(_engine, _request_client, _request_id, now(),
 	                                   Path(src.str()), Path(dst.str())));
 }
 
@@ -151,7 +151,7 @@ void
 ServerInterfaceImpl::disconnect_all(const Path& patch_path,
                                     const Path& path)
 {
-	push_queued(new Events::DisconnectAll(_engine, _request_client, _request_id, now(), patch_path, path));
+	event(new Events::DisconnectAll(_engine, _request_client, _request_id, now(), patch_path, path));
 }
 
 void
@@ -163,16 +163,16 @@ ServerInterfaceImpl::set_property(const URI&  uri,
 	    && value.type() == _engine.world()->forge().Bool) {
 		if (value.get_bool()) {
 			_engine.activate();
-			push_queued(new Events::Ping(_engine, _request_client, _request_id, now()));
+			event(new Events::Ping(_engine, _request_client, _request_id, now()));
 		} else {
-			push_queued(new Events::Deactivate(_engine, _request_client, _request_id, now()));
+			event(new Events::Deactivate(_engine, _request_client, _request_id, now()));
 		}
 	} else {
 		Resource::Properties remove;
 		remove.insert(make_pair(predicate, _engine.world()->uris()->wildcard));
 		Resource::Properties add;
 		add.insert(make_pair(predicate, value));
-		push_queued(new Events::SetMetadata(
+		event(new Events::SetMetadata(
 			            _engine, _request_client, _request_id, now(), false, Resource::DEFAULT,
 			            uri, add, remove));
 	}
@@ -183,7 +183,7 @@ ServerInterfaceImpl::set_property(const URI&  uri,
 void
 ServerInterfaceImpl::get(const URI& uri)
 {
-	push_queued(new Events::Get(_engine, _request_client, _request_id, now(), uri));
+	event(new Events::Get(_engine, _request_client, _request_id, now(), uri));
 }
 
 } // namespace Server