1 files changed, 138 insertions, 0 deletions
diff --git a/src/plugins/generic/tuiotouch/qoscmessage.cpp b/src/plugins/generic/tuiotouch/qoscmessage.cpp
new file mode 100644
index 0000000000..41032bca3e
--- /dev/null
+++ b/src/plugins/generic/tuiotouch/qoscmessage.cpp
@@ -0,0 +1,138 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Robin Burchell <robin.burchell@viroteck.net>
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QByteArray>
+#include <QDebug>
+#include <QtEndian>
+#include <QVariant>
+#include <QLoggingCategory>
+
+#include "qoscmessage_p.h"
+#include "qtuio_p.h"
+
+QT_BEGIN_NAMESPACE
+
+Q_LOGGING_CATEGORY(lcTuioMessage, "qt.qpa.tuio.message")
+
+// TUIO packets are transmitted using the OSC protocol, located at:
+//   http://opensoundcontrol.org/specification
+// Snippets of this specification have been pasted into the source as a means of
+// easily communicating requirements.
+
+QOscMessage::QOscMessage(const QByteArray &data)
+    : m_isValid(false)
+{
+    qCDebug(lcTuioMessage) << data.toHex();
+    quint32 parsedBytes = 0;
+
+    // "An OSC message consists of an OSC Address Pattern"
+    QByteArray addressPattern;
+    if (!qt_readOscString(data, addressPattern, parsedBytes) || addressPattern.size() == 0)
+        return;
+
+    // "followed by an OSC Type Tag String"
+    QByteArray typeTagString;
+    if (!qt_readOscString(data, typeTagString, parsedBytes))
+        return;
+
+    // "Note: some older implementations of OSC may omit the OSC Type Tag string.
+    // Until all such implementations are updated, OSC implementations should be
+    // robust in the case of a missing OSC Type Tag String."
+    //
+    // (although, the editor notes one may question how exactly the hell one is
+    // supposed to be robust when the behavior is unspecified.)
+    if (typeTagString.size() == 0 || typeTagString.at(0) != ',')
+        return;
+
+    QList<QVariant> arguments;
+
+    // "followed by zero or more OSC Arguments."
+    for (int i = 1; i < typeTagString.size(); ++i) {
+        char typeTag = typeTagString.at(i);
+        if (typeTag == 's') { // osc-string
+            QByteArray aString;
+            if (!qt_readOscString(data, aString, parsedBytes))
+                return;
+            arguments.append(aString);
+        } else if (typeTag == 'i') { // int32
+            if (parsedBytes > (quint32)data.size() || data.size() - parsedBytes < sizeof(quint32))
+                return;
+
+            quint32 anInt = qFromBigEndian<quint32>((const uchar*)data.constData() + parsedBytes);
+            parsedBytes += sizeof(quint32);
+
+            // TODO: is int32 in OSC signed, or unsigned?
+            arguments.append((int)anInt);
+        } else if (typeTag == 'f') { // float32
+            if (parsedBytes > (quint32)data.size() || data.size() - parsedBytes < sizeof(quint32))
+                return;
+
+            Q_STATIC_ASSERT(sizeof(float) == sizeof(quint32));
+            union {
+                quint32 u;
+                float f;
+            } value;
+            value.u = qFromBigEndian<quint32>((const uchar*)data.constData() + parsedBytes);
+            parsedBytes += sizeof(quint32);
+            arguments.append(value.f);
+        } else {
+            qWarning() << "Reading argument of unknown type " << typeTag;
+            return;
+        }
+    }
+
+    m_isValid = true;
+    m_addressPattern = addressPattern;
+    m_arguments = arguments;
+
+    qCDebug(lcTuioMessage) << "Message with address pattern: " << addressPattern << " arguments: " << arguments;
+}
+
+bool QOscMessage::isValid() const
+{
+    return m_isValid;
+}
+
+QByteArray QOscMessage::addressPattern() const
+{
+    return m_addressPattern;
+}
+
+QList<QVariant> QOscMessage::arguments() const
+{
+    return m_arguments;
+}
+
+QT_END_NAMESPACE
+