From 0e47cf5e7153a96875a64754291fad1cdbf26da7 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sun, 17 Aug 2008 17:25:10 +0000
Subject: Add missing files.

git-svn-id: http://svn.drobilla.net/lad/ingen@1417 a436a847-0d15-0410-975c-d299462d15a1
---
 src/libs/shared/OSCSender.cpp | 118 ++++++++++++++++++++++++++++++++++++++++++
 src/libs/shared/OSCSender.hpp |  59 +++++++++++++++++++++
 2 files changed, 177 insertions(+)
 create mode 100644 src/libs/shared/OSCSender.cpp
 create mode 100644 src/libs/shared/OSCSender.hpp

(limited to 'src/libs')

diff --git a/src/libs/shared/OSCSender.cpp b/src/libs/shared/OSCSender.cpp
new file mode 100644
index 00000000..340786db
--- /dev/null
+++ b/src/libs/shared/OSCSender.cpp
@@ -0,0 +1,118 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2008 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 "OSCSender.hpp"
+#include <cassert>
+#include <iostream>
+
+using namespace std;
+
+namespace Ingen {
+namespace Shared {
+
+
+OSCSender::OSCSender()
+	: _transfer(NULL)
+	, _address(NULL)
+	, _enabled(true)
+{
+}
+
+
+void
+OSCSender::bundle_begin()
+{
+	assert(!_transfer);
+	_transfer = lo_bundle_new(LO_TT_IMMEDIATE);
+	_send_state = SendingBundle;
+}
+
+
+void
+OSCSender::bundle_end()
+{
+	transfer_end();
+}
+
+	
+void
+OSCSender::transfer_begin()
+{
+	assert(!_transfer);
+	_transfer = lo_bundle_new(LO_TT_IMMEDIATE);
+	_send_state = SendingTransfer;
+}
+
+
+void
+OSCSender::transfer_end()
+{
+	assert(_transfer);
+	lo_send_bundle(_address, _transfer);
+	lo_bundle_free(_transfer);
+	_transfer = NULL;
+	_send_state = Immediate;
+}
+
+	
+int
+OSCSender::send(const char *path, const char *types, ...)
+{
+	if (!_enabled)
+		return 0;
+
+	va_list args;
+	va_start(args, types);
+	
+	lo_message msg = lo_message_new();
+	int ret = lo_message_add_varargs(msg, types, args);
+    
+	if (!ret)
+		send_message(path, msg);
+    
+	va_end(args);
+
+	return ret;
+}
+
+
+void
+OSCSender::send_message(const char* path, lo_message msg)
+{
+	// FIXME: size?  liblo doesn't export this.
+	// Don't want to exceed max UDP packet size (1500 bytes?)
+	static const size_t MAX_BUNDLE_SIZE = 1500 - 32*5;
+
+	if (!_enabled)
+		return;
+		
+	if (_transfer) {
+		if (lo_bundle_length(_transfer) + lo_message_length(msg, path) > MAX_BUNDLE_SIZE) {
+			if (_send_state == SendingBundle)
+				cerr << "WARNING: Maximum bundle size reached, bundle split" << endl;
+			lo_send_bundle(_address, _transfer);
+			_transfer = lo_bundle_new(LO_TT_IMMEDIATE);
+		}
+		lo_bundle_add_message(_transfer, path, msg);
+
+	} else {
+		lo_send_message(_address, path, msg);
+	}
+}
+
+} // namespace Shared
+} // namespace Ingen
diff --git a/src/libs/shared/OSCSender.hpp b/src/libs/shared/OSCSender.hpp
new file mode 100644
index 00000000..16b6dd22
--- /dev/null
+++ b/src/libs/shared/OSCSender.hpp
@@ -0,0 +1,59 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007 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
+ */
+
+#ifndef OSCSENDER_H
+#define OSCSENDER_H
+
+#include <inttypes.h>
+#include <lo/lo.h>
+
+namespace Ingen {
+namespace Shared {
+
+class OSCSender {
+public:
+	OSCSender();
+	~OSCSender();
+
+	lo_address address() const { return _address; }
+	
+	// Message bundling
+	void bundle_begin();
+	void bundle_end();
+	
+	// Transfers (loose bundling)
+	void transfer_begin();
+	void transfer_end();
+
+protected:
+	int  send(const char *path, const char *types, ...);
+	void send_message(const char* path, lo_message m);
+
+	enum SendState { Immediate, SendingBundle, SendingTransfer };
+
+	SendState  _send_state;
+	lo_bundle  _transfer;
+	lo_address _address;
+	bool       _enabled;
+};
+
+
+} // namespace Shared
+} // namespace Ingen
+
+#endif // OSCSENDER_H
+
-- 
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