1 files changed, 128 insertions, 0 deletions
diff --git a/src/engine/events/RequestMetadata.cpp b/src/engine/events/RequestMetadata.cpp
new file mode 100644
index 00000000..26400fef
--- /dev/null
+++ b/src/engine/events/RequestMetadata.cpp
@@ -0,0 +1,128 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007-2009 Dave Robillard <http://drobilla.net>
+ *
+ * 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 "interface/ClientInterface.hpp"
+#include "events/RequestMetadata.hpp"
+#include "Responder.hpp"
+#include "Engine.hpp"
+#include "GraphObjectImpl.hpp"
+#include "EngineStore.hpp"
+#include "ClientBroadcaster.hpp"
+#include "PortImpl.hpp"
+#include "PluginImpl.hpp"
+#include "AudioBuffer.hpp"
+
+using namespace std;
+using namespace Raul;
+
+namespace Ingen {
+
+using namespace Shared;
+
+
+RequestMetadataEvent::RequestMetadataEvent(Engine&              engine,
+	                                       SharedPtr<Responder> responder,
+	                                       SampleCount          timestamp,
+	                                       bool                 is_meta,
+	                                       const URI&           subject,
+	                                       const URI&           key)
+	: QueuedEvent(engine, responder, timestamp)
+	, _error(NO_ERROR)
+	, _special_type(NONE)
+	, _uri(subject)
+	, _key(key)
+	, _resource(0)
+	, _is_meta(is_meta)
+{
+}
+
+
+void
+RequestMetadataEvent::pre_process()
+{
+	const bool is_object = (_uri.scheme() == Path::scheme && Path::is_valid(_uri.str()));
+	if (_responder->client()) {
+		if (is_object)
+			_resource = _engine.engine_store()->find_object(Path(_uri.str()));
+		else
+			_resource = _engine.node_factory()->plugin(_uri);
+
+		if (!_resource) {
+			QueuedEvent::pre_process();
+			return;
+		}
+	}
+
+	GraphObjectImpl* obj = dynamic_cast<GraphObjectImpl*>(_resource);
+	if (obj) {
+		if (_key.str() == "ingen:value")
+			_special_type = PORT_VALUE;
+		else if (_is_meta)
+			_value = obj->meta().get_property(_key);
+		else
+			_value = obj->get_property(_key);
+	} else {
+		_value = _resource->get_property(_key);
+	}
+
+	QueuedEvent::pre_process();
+}
+
+
+void
+RequestMetadataEvent::execute(ProcessContext& context)
+{
+	QueuedEvent::execute(context);
+	if (_special_type == PORT_VALUE) {
+		PortImpl* port = dynamic_cast<PortImpl*>(_resource);
+		if (port) {
+			if (port->type() == DataType::CONTROL || port->type() == DataType::AUDIO)
+				_value = ((AudioBuffer*)port->buffer(0))->value_at(0); // TODO: offset
+		} else {
+			_resource = 0;
+		}
+	}
+}
+
+
+void
+RequestMetadataEvent::post_process()
+{
+	if (_responder->client()) {
+		if (_special_type == PORT_VALUE) {
+			if (_resource) {
+				_responder->respond_ok();
+				_responder->client()->set_port_value(_uri.str(), _value);
+			} else {
+				const string msg = "Get value for non-port " + _uri.str();
+				_responder->respond_error(msg);
+			}
+		} else if (!_resource) {
+			const string msg = "Unable to find subject " + _uri.str();
+			_responder->respond_error(msg);
+		} else {
+			_responder->respond_ok();
+			_responder->client()->set_property(_uri, _key, _value);
+		}
+	} else {
+		_responder->respond_error("Unknown client");
+	}
+}
+
+
+} // namespace Ingen
+