From acbda29f838280ba98cf9e9e539e9d8a6e8fc6ad Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Fri, 9 Jun 2006 15:07:31 +0000
Subject: Added Om aka Graph aka god knows what

git-svn-id: http://svn.drobilla.net/lad/grauph@9 a436a847-0d15-0410-975c-d299462d15a1
---
 src/engine/NodeBase.cpp | 171 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 src/engine/NodeBase.cpp

(limited to 'src/engine/NodeBase.cpp')

diff --git a/src/engine/NodeBase.cpp b/src/engine/NodeBase.cpp
new file mode 100644
index 00000000..b1628539
--- /dev/null
+++ b/src/engine/NodeBase.cpp
@@ -0,0 +1,171 @@
+/* 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 "NodeBase.h"
+#include <cassert>
+#include <iostream>
+#include <stdint.h>
+#include "Om.h"
+#include "OmApp.h"
+#include "util.h"
+#include "Array.h"
+#include "Plugin.h"
+#include "ClientBroadcaster.h"
+#include "Port.h"
+#include "List.h"
+#include "Patch.h"
+#include "ObjectStore.h"
+
+using std::cout; using std::cerr; using std::endl;
+
+namespace Om {
+
+
+NodeBase::NodeBase(const string& name, size_t poly, Patch* parent, samplerate srate, size_t buffer_size)
+: Node(parent, name),
+  m_poly(poly),
+  m_srate(srate),
+  m_buffer_size(buffer_size),
+  m_activated(false),
+  m_num_ports(0),
+  m_traversed(false),
+  m_providers(new List<Node*>()),
+  m_dependants(new List<Node*>())
+{
+	assert(m_poly > 0);
+	assert(m_parent == NULL || (m_poly == parent->internal_poly() || m_poly == 1));
+}
+
+
+NodeBase::~NodeBase()
+{
+	assert(!m_activated);
+
+	delete m_providers;
+	delete m_dependants;
+	
+	for (size_t i=0; i < m_ports.size(); ++i)
+		delete m_ports.at(i);
+}
+
+
+void
+NodeBase::activate()
+{
+	assert(!m_activated);
+	m_activated = true;
+}
+
+
+void
+NodeBase::deactivate()
+{
+	assert(m_activated);
+	m_activated = false;
+}
+
+
+/*
+void
+NodeBase::send_creation_messages(ClientInterface* client) const
+{
+	cerr << "FIXME: send_creation\n";
+	//om->client_broadcaster()->send_node_to(client, this);
+}
+*/
+
+void
+NodeBase::add_to_store()
+{
+	om->object_store()->add(this);
+	for (size_t i=0; i < num_ports(); ++i)
+		om->object_store()->add(m_ports.at(i));
+}
+
+
+void
+NodeBase::remove_from_store()
+{
+	// Remove self
+	TreeNode<OmObject*>* node = om->object_store()->remove(path());
+	if (node != NULL) {
+		assert(om->object_store()->find(path()) == NULL);
+		delete node;
+	}
+	
+	// Remove ports
+	for (size_t i=0; i < m_num_ports; ++i) {
+		node = om->object_store()->remove(m_ports.at(i)->path());
+		if (node != NULL) {
+			assert(om->object_store()->find(m_ports.at(i)->path()) == NULL);
+			delete node;
+		}
+	}
+}
+
+
+/** Runs the Node for the specified number of frames (block size)
+ */
+void
+NodeBase::run(size_t nframes)
+{
+	assert(m_activated);
+	// Mix down any ports with multiple inputs
+	Port* p;
+	for (size_t i=0; i < m_ports.size(); ++i) {
+		p = m_ports.at(i);
+		p->prepare_buffers(nframes);
+	}
+}
+
+
+/** Rename this Node.
+ *
+ * This is responsible for updating the ObjectStore so the Node can be
+ * found at it's new path, as well as all it's children.
+ */
+void
+NodeBase::set_path(const Path& new_path)
+{
+	const Path old_path = path();
+	//cerr << "Renaming " << old_path << " -> " << new_path << endl;
+	
+	TreeNode<OmObject*>* treenode = NULL;
+	
+	// Reinsert ports
+	for (size_t i=0; i < m_num_ports; ++i) {
+		treenode = om->object_store()->remove(old_path +"/"+ m_ports.at(i)->name());
+		assert(treenode != NULL);
+		assert(treenode->node() == m_ports.at(i));
+		treenode->key(new_path +"/" + m_ports.at(i)->name());
+		om->object_store()->add(treenode);
+	}
+	
+	// Rename and reinsert self
+	treenode = om->object_store()->remove(old_path);
+	assert(treenode != NULL);
+	assert(treenode->node() == this);
+	OmObject::set_path(new_path);
+	treenode->key(new_path);
+	om->object_store()->add(treenode);
+	
+
+	assert(om->object_store()->find(new_path) == this);
+}
+
+
+} // namespace Om
+
-- 
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