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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."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qquickfreenectdepthdataproxy.h"
#include "libfreenect.h"
QQuickFreenectDepthDataProxy::QQuickFreenectDepthDataProxy()
: m_backend(QQuickFreenectBackend::instance())
{
connect(m_backend.get(), SIGNAL(depthFrameReady()), SLOT(updateData()));
connect(this, SIGNAL(highClipChanged()), SLOT(updateData()));
m_dataArray = new QtDataVisualization::QSurfaceDataArray;
m_dataArray->reserve(height);
for (int y = 0; y < height; ++y)
m_dataArray->append(new QtDataVisualization::QSurfaceDataRow(width));
resetArray(m_dataArray);
m_backend->requestDepthStreamEnabled();
}
void QQuickFreenectDepthDataProxy::updateData()
{
unsigned frameId = m_backend->depthFrameId();
if (m_lastUpdateFrameId == frameId)
return;
uint16_t *buffer = m_backend->depthBuffer();
QSize bufferSize = m_backend->depthBufferSize();
int widthRatio = bufferSize.width() / width;
int heightRatio = bufferSize.height() / height;
for (int y = 0; y < height; ++y) {
auto proxyRow = (*m_dataArray)[y];
for (int x = 0; x < width; ++x) {
uint16_t data = buffer[(height - 1 - y)*widthRatio * bufferSize.width() + x*heightRatio];
data = std::min(m_highClip, data != FREENECT_DEPTH_RAW_NO_VALUE ? FREENECT_DEPTH_RAW_MAX_VALUE - data : 0);
(*proxyRow)[x].setPosition(QVector3D(x, data, y));
}
}
resetArray(m_dataArray);
m_lastUpdateFrameId = frameId;
}
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