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-rw-r--r--src/engine/events/RequestMetadata.cpp128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/engine/events/RequestMetadata.cpp b/src/engine/events/RequestMetadata.cpp
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+/* 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
+