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/***************************************************************************
**
** Copyright (C) 2011 - 2012 Research In Motion
** Contact: http://www.qt-project.org/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qqnxbuffer.h"
#include <QtCore/QDebug>
#include <errno.h>
#include <sys/mman.h>
#ifdef QQNXBUFFER_DEBUG
#define qBufferDebug qDebug
#else
#define qBufferDebug QT_NO_QDEBUG_MACRO
#endif
QT_BEGIN_NAMESPACE
QQnxBuffer::QQnxBuffer()
: m_buffer(0)
{
qBufferDebug() << Q_FUNC_INFO << "empty";
}
QQnxBuffer::QQnxBuffer(screen_buffer_t buffer)
: m_buffer(buffer)
{
qBufferDebug() << Q_FUNC_INFO << "normal";
// Get size of buffer
errno = 0;
int size[2];
int result = screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_BUFFER_SIZE, size);
if (result != 0) {
qFatal("QQNX: failed to query buffer size, errno=%d", errno);
}
// Get stride of buffer
errno = 0;
int stride;
result = screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_STRIDE, &stride);
if (result != 0) {
qFatal("QQNX: failed to query buffer stride, errno=%d", errno);
}
// Get access to buffer's data
errno = 0;
uchar *dataPtr = 0;
result = screen_get_buffer_property_pv(buffer, SCREEN_PROPERTY_POINTER, (void **)&dataPtr);
if (result != 0) {
qFatal("QQNX: failed to query buffer pointer, errno=%d", errno);
}
if (dataPtr == NULL) {
qFatal("QQNX: buffer pointer is NULL, errno=%d", errno);
}
// Get format of buffer
errno = 0;
int screenFormat;
result = screen_get_buffer_property_iv(buffer, SCREEN_PROPERTY_FORMAT, &screenFormat);
if (result != 0) {
qFatal("QQNX: failed to query buffer format, errno=%d", errno);
}
// 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() << Q_FUNC_INFO << "copy";
}
QQnxBuffer::~QQnxBuffer()
{
qBufferDebug() << Q_FUNC_INFO;
}
void QQnxBuffer::invalidateInCache()
{
qBufferDebug() << Q_FUNC_INFO;
// Verify native buffer exists
if (m_buffer == 0) {
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 (result != 0) {
qFatal("QQNX: failed to invalidate cache, errno=%d", errno);
}
}
QT_END_NAMESPACE
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