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/***************************************************************************
**
** Copyright (C) 2011 - 2012 Research In Motion
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qqnxglobal.h"
#include "qqnxbuffer.h"
#include <QtCore/QDebug>
#include <errno.h>
#include <sys/mman.h>
#if defined(QQNXBUFFER_DEBUG)
#define qBufferDebug qDebug
#else
#define qBufferDebug QT_NO_QDEBUG_MACRO
#endif
QT_BEGIN_NAMESPACE
QQnxBuffer::QQnxBuffer()
: m_buffer(0)
{
qBufferDebug("empty");
}
QQnxBuffer::QQnxBuffer(screen_buffer_t buffer)
: m_buffer(buffer)
{
qBufferDebug("normal");
// Get size of buffer
int size[2];
Q_SCREEN_CRITICALERROR(screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_BUFFER_SIZE, size),
"Failed to query buffer size");
// Get stride of buffer
int stride;
Q_SCREEN_CHECKERROR(screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_STRIDE, &stride),
"Failed to query buffer stride");
// Get access to buffer's data
errno = 0;
uchar *dataPtr = 0;
Q_SCREEN_CRITICALERROR(
screen_get_buffer_property_pv(buffer, SCREEN_PROPERTY_POINTER, (void **)&dataPtr),
"Failed to query buffer pointer");
if (Q_UNLIKELY(!dataPtr))
qFatal("QQNX: buffer pointer is NULL, errno=%d", errno);
// Get format of buffer
int screenFormat;
Q_SCREEN_CHECKERROR(
screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_FORMAT, &screenFormat),
"Failed to query buffer format");
// Convert screen format to QImage format
QImage::Format imageFormat = QImage::Format_Invalid;
switch (screenFormat) {
case SCREEN_FORMAT_RGBX4444:
imageFormat = QImage::Format_RGB444;
break;
case SCREEN_FORMAT_RGBA4444:
imageFormat = QImage::Format_ARGB4444_Premultiplied;
break;
case SCREEN_FORMAT_RGBX5551:
imageFormat = QImage::Format_RGB555;
break;
case SCREEN_FORMAT_RGB565:
imageFormat = QImage::Format_RGB16;
break;
case SCREEN_FORMAT_RGBX8888:
imageFormat = QImage::Format_RGB32;
break;
case SCREEN_FORMAT_RGBA8888:
imageFormat = QImage::Format_ARGB32_Premultiplied;
break;
default:
qFatal("QQNX: unsupported buffer format, format=%d", screenFormat);
}
// wrap buffer in an image
m_image = QImage(dataPtr, size[0], size[1], stride, imageFormat);
}
QQnxBuffer::QQnxBuffer(const QQnxBuffer &other)
: m_buffer(other.m_buffer),
m_image(other.m_image)
{
qBufferDebug("copy");
}
QQnxBuffer::~QQnxBuffer()
{
qBufferDebug();
}
void QQnxBuffer::invalidateInCache()
{
qBufferDebug();
// Verify native buffer exists
if (Q_UNLIKELY(!m_buffer))
qFatal("QQNX: can't invalidate cache for null buffer");
// Evict buffer's data from cache
errno = 0;
int result = msync(m_image.bits(), m_image.height() * m_image.bytesPerLine(), MS_INVALIDATE | MS_CACHE_ONLY);
if (Q_UNLIKELY(result != 0))
qFatal("QQNX: failed to invalidate cache, errno=%d", errno);
}
QT_END_NAMESPACE
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