| /*************************************************************************** |
| ** |
| ** 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 |
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| ** |
| ** 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 |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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 |