Added Om aka Graph aka god knows what

git-svn-id: http://svn.drobilla.net/lad/grauph@9 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 81 insertions, 0 deletions

diff --git a/src/engine/RequestPortValueEvent.cpp b/src/engine/RequestPortValueEvent.cpp
new file mode 100644
index 00000000..e4d3985e
--- /dev/null
+++ b/src/engine/RequestPortValueEvent.cpp
@@ -0,0 +1,81 @@
+/* This file is part of Om.  Copyright (C) 2006 Dave Robillard.
+ * 
+ * Om 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.
+ * 
+ * Om 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.,
+ * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "RequestPortValueEvent.h"
+#include <string>
+#include "Responder.h"
+#include "Om.h"
+#include "OmApp.h"
+#include "interface/ClientInterface.h"
+#include "PortBase.h"
+#include "PortInfo.h"
+#include "ObjectStore.h"
+#include "ClientBroadcaster.h"
+
+using std::string;
+
+namespace Om {
+
+
+RequestPortValueEvent::RequestPortValueEvent(CountedPtr<Responder> responder, const string& port_path)
+: QueuedEvent(responder),
+  m_port_path(port_path),
+  m_port(NULL),
+  m_value(0.0),
+  m_client(CountedPtr<ClientInterface>(NULL))
+{
+}
+
+
+void
+RequestPortValueEvent::pre_process()
+{
+	m_client = m_responder->find_client();
+	m_port = om->object_store()->find_port(m_port_path);
+
+	QueuedEvent::pre_process();
+}
+
+
+void
+RequestPortValueEvent::execute(samplecount offset)
+{
+	if (m_port != NULL && m_port->port_info()->is_audio() || m_port->port_info()->is_control())
+		m_value = ((PortBase<sample>*)m_port)->buffer(0)->value_at(offset);
+	else 
+		m_port = NULL; // triggers error response
+
+	QueuedEvent::execute(offset);
+}
+
+
+void
+RequestPortValueEvent::post_process()
+{
+	string msg;
+	if (m_port) {
+		m_responder->respond_error("Unable to find port for get_value responder.");
+	} else if (m_client) {
+		m_responder->respond_ok();
+		m_client->control_change(m_port_path, m_value);
+	} else {
+		m_responder->respond_error("Invalid URL");
+	}
+}
+
+
+} // namespace Om
+