More juggling

git-svn-id: http://svn.drobilla.net/lad/grauph@15 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 240 insertions, 0 deletions

diff --git a/src/libs/engine/events/ConnectionEvent.cpp b/src/libs/engine/events/ConnectionEvent.cpp
new file mode 100644
index 00000000..fe3b991e
--- /dev/null
+++ b/src/libs/engine/events/ConnectionEvent.cpp
@@ -0,0 +1,240 @@
+/* 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 "ConnectionEvent.h"
+#include <string>
+#include "Responder.h"
+#include "Om.h"
+#include "OmApp.h"
+#include "ConnectionBase.h"
+#include "InputPort.h"
+#include "OutputPort.h"
+#include "Patch.h"
+#include "ClientBroadcaster.h"
+#include "Port.h"
+#include "PortInfo.h"
+#include "Maid.h"
+#include "ObjectStore.h"
+#include "util/Path.h"
+
+using std::string;
+namespace Om {
+
+
+//// ConnectionEvent ////
+
+
+ConnectionEvent::ConnectionEvent(CountedPtr<Responder> responder, const string& src_port_path, const string& dst_port_path)
+: QueuedEvent(responder),
+  m_src_port_path(src_port_path),
+  m_dst_port_path(dst_port_path),
+  m_patch(NULL),
+  m_src_port(NULL),
+  m_dst_port(NULL),
+  m_typed_event(NULL),
+  m_error(NO_ERROR)
+{
+}
+
+
+ConnectionEvent::~ConnectionEvent()
+{
+	delete m_typed_event;
+}
+
+
+void
+ConnectionEvent::pre_process()
+{
+	if (m_src_port_path.parent().parent() != m_dst_port_path.parent().parent()) {
+		m_error = PARENT_PATCH_DIFFERENT;
+		QueuedEvent::pre_process();
+		return;
+	}
+	
+	/*m_patch = om->object_store()->find_patch(m_src_port_path.parent().parent());
+
+	if (m_patch == NULL) {
+		m_error = PORT_NOT_FOUND;
+		QueuedEvent::pre_process();
+		return;
+	}*/
+	
+	Port* port1 = om->object_store()->find_port(m_src_port_path);
+	Port* port2 = om->object_store()->find_port(m_dst_port_path);
+	
+	if (port1 == NULL || port2 == NULL) {
+		m_error = PORT_NOT_FOUND;
+		QueuedEvent::pre_process();
+		return;
+	}
+
+	if (port1->port_info()->type() != port2->port_info()->type()) {
+		m_error = TYPE_MISMATCH;
+		QueuedEvent::pre_process();
+		return;
+	}
+	
+	if (port1->port_info()->is_output() && port2->port_info()->is_input()) {
+		m_src_port = port1;
+		m_dst_port = port2;
+	} else if (port2->port_info()->is_output() && port1->port_info()->is_input()) {
+		m_src_port = port2;
+		m_dst_port = port1;
+	} else {
+		m_error = TYPE_MISMATCH;
+		QueuedEvent::pre_process();
+		return;
+	}
+	
+	// Create the typed event to actually do the work
+	const PortType type = port1->port_info()->type();
+	if (type == AUDIO || type == CONTROL) {
+		m_typed_event = new TypedConnectionEvent<sample>(m_responder,
+			(OutputPort<sample>*)m_src_port, (InputPort<sample>*)m_dst_port);
+	} else if (type == MIDI) {
+		m_typed_event = new TypedConnectionEvent<MidiMessage>(m_responder,
+			(OutputPort<MidiMessage>*)m_src_port, (InputPort<MidiMessage>*)m_dst_port);
+	} else {
+		m_error = TYPE_MISMATCH;
+		QueuedEvent::pre_process();
+		return;
+	}
+
+	m_typed_event->pre_process();
+	
+	QueuedEvent::pre_process();
+}
+
+
+void
+ConnectionEvent::execute(samplecount offset)
+{
+	QueuedEvent::execute(offset);
+
+	if (m_error == NO_ERROR)
+		m_typed_event->execute(offset);
+}
+
+
+void
+ConnectionEvent::post_process()
+{
+	if (m_error == NO_ERROR) {
+		m_typed_event->post_process();
+	} else {
+		// FIXME: better error messages
+		string msg = "Unable to make connection ";
+		msg.append(m_src_port_path + " -> " + m_dst_port_path);
+		m_responder->respond_error(msg);
+	}
+}
+
+
+
+//// TypedConnectionEvent ////
+
+
+template <typename T>
+TypedConnectionEvent<T>::TypedConnectionEvent(CountedPtr<Responder> responder, OutputPort<T>* src_port, InputPort<T>* dst_port)
+: QueuedEvent(responder),
+  m_src_port(src_port),
+  m_dst_port(dst_port),
+  m_patch(NULL),
+  m_process_order(NULL),
+  m_connection(NULL),
+  m_port_listnode(NULL),
+  m_succeeded(true)
+{
+	assert(src_port != NULL);
+	assert(dst_port != NULL);
+}
+
+template <typename T>
+TypedConnectionEvent<T>::~TypedConnectionEvent()
+{
+	// FIXME: haaaack, prevent a double delete
+	// this class is unusable by anything other than ConnectionEvent because of this
+	//m_responder = NULL;
+}
+
+
+template <typename T>
+void
+TypedConnectionEvent<T>::pre_process()
+{
+	Node* const src_node = m_src_port->parent_node();
+	Node* const dst_node = m_dst_port->parent_node();
+	
+	m_patch = src_node->parent_patch();
+
+	if (src_node == NULL || dst_node == NULL) {
+		m_succeeded = false;
+		QueuedEvent::pre_process();
+		return;
+	}
+	
+	if (src_node->parent() != m_patch || dst_node->parent() != m_patch) {
+		m_succeeded = false;
+		QueuedEvent::pre_process();
+		return;
+	}
+
+	m_connection = new ConnectionBase<T>(m_src_port, m_dst_port);
+	m_port_listnode = new ListNode<ConnectionBase<T>*>(m_connection);
+	m_patch_listnode = new ListNode<Connection*>(m_connection);
+	
+	dst_node->providers()->push_back(new ListNode<Node*>(src_node));
+	src_node->dependants()->push_back(new ListNode<Node*>(dst_node));
+
+	if (m_patch->process())
+		m_process_order = m_patch->build_process_order();
+}
+
+
+template <typename T>
+void
+TypedConnectionEvent<T>::execute(samplecount offset)
+{
+	if (m_succeeded) {
+		// These must be inserted here, since they're actually used by the audio thread
+		m_dst_port->add_connection(m_port_listnode);
+		m_patch->add_connection(m_patch_listnode);
+		if (m_patch->process_order() != NULL)
+			om->maid()->push(m_patch->process_order());
+		m_patch->process_order(m_process_order);
+	}
+}
+
+
+template <typename T>
+void
+TypedConnectionEvent<T>::post_process()
+{
+	if (m_succeeded) {
+		assert(m_connection != NULL);
+	
+		m_responder->respond_ok();
+	
+		om->client_broadcaster()->send_connection(m_connection);
+	} else {
+		m_responder->respond_error("Unable to make connection.");
+	}
+}
+
+
+} // namespace Om
+