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diff --git a/tradeshow/enterprise-kinectdatavis/src/quickfreenect/qquickfreenectbackend.h b/tradeshow/enterprise-kinectdatavis/src/quickfreenect/qquickfreenectbackend.h
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+/****************************************************************************
+**
+** Copyright (C) 2015 Digia Plc and/or its subsidiary(-ies).
+** Contact: For any questions to Digia, please use the contact form at
+** http://www.qt.io
+**
+** This file is part of the examples of the Qt Enterprise Embedded.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+**     of its contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QQUICKFREENECTBACKEND_H
+#define QQUICKFREENECTBACKEND_H
+
+#include "qquickfreenectvideooutput.h"
+
+#include <QMutex>
+#include <QSize>
+#include <QThread>
+#include <memory>
+
+class QVector3D;
+struct _freenect_context;
+typedef struct _freenect_context freenect_context;
+struct _freenect_device;
+typedef struct _freenect_device freenect_device;
+
+class QQuickFreenectBackend : public QThread {
+    Q_OBJECT
+public:
+    static std::shared_ptr<QQuickFreenectBackend> instance();
+    ~QQuickFreenectBackend();
+
+    void requestTiltDegrees(double degrees) { m_requestedTiltDegrees = degrees; }
+    void requestDepthStreamEnabled() { m_requestedDepthStreamEnabled = true; }
+    void requestVideoStreamType(QQuickFreenectVideoOutput::StreamType type) { m_requestedVideoStream = type; }
+    unsigned depthFrameId() const { return m_depthFrameId; }
+    QQuickFreenectVideoOutput::StreamType requestedVideoStreamType() const { return m_requestedVideoStream; }
+
+    QSize depthBufferSize() const { return {640, 480}; }
+    uint16_t *depthBuffer() { return m_depthBuffer; }
+    QQuickFreenectVideoOutput::StreamType videoFrontBufferStreamType() const { return m_currentVideoStream; }
+    uint8_t *pickVideoFrontBuffer();
+
+    void run() override;
+
+signals:
+    void videoFrameReady();
+    void depthFrameReady();
+    void accelVectorValue(const QVector3D&);
+    void errorStringValue(const QString&);
+
+private:
+    QQuickFreenectBackend();
+    static void depth_cb(freenect_device *dev, void *buffer, uint32_t timestamp);
+    static void video_cb(freenect_device *dev, void *buffer, uint32_t timestamp);
+
+    uint8_t *m_videoBack = 0;
+    uint8_t *m_videoMid = 0;
+    uint8_t *m_videoFront = 0;
+    uint16_t *m_depthBuffer = 0;
+    double m_requestedTiltDegrees = 0;
+    double m_currentTiltDegrees = 0;
+    bool m_requestedDepthStreamEnabled = false;
+    bool m_currentDepthStreamEnabled = false;
+    QQuickFreenectVideoOutput::StreamType m_requestedVideoStream = QQuickFreenectVideoOutput::VideoOff;
+    QQuickFreenectVideoOutput::StreamType m_currentVideoStream = QQuickFreenectVideoOutput::VideoOff;
+    bool m_gotVideoFrame = false;
+    bool m_exitRequested = false;
+    unsigned m_depthFrameId = 0;
+    QMutex m_mutex;
+};
+
+#endif