115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <qimage.h>
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#include <private/qimage_p.h>
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#include <private/qsimd_p.h>
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#ifdef QT_HAVE_NEON
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QT_BEGIN_NAMESPACE
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Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_neon(quint32 *dst, const uchar *src, int len)
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{
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if (!len)
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return;
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const quint32 *const end = dst + len;
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// align dst on 64 bits
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const int offsetToAlignOn8Bytes = (reinterpret_cast<quintptr>(dst) >> 2) & 0x1;
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for (int i = 0; i < offsetToAlignOn8Bytes; ++i) {
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*dst++ = qRgb(src[0], src[1], src[2]);
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src += 3;
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}
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if ((len - offsetToAlignOn8Bytes) >= 8) {
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const quint32 *const simdEnd = end - 7;
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register uint8x8_t fullVector asm ("d3") = vdup_n_u8(0xff);
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do {
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#if Q_BYTE_ORDER == Q_BIG_ENDIAN
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asm volatile (
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"vld3.8 { d4, d5, d6 }, [%[SRC]] !\n\t"
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"vst4.8 { d3, d4, d5, d6 }, [%[DST],:64] !\n\t"
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: [DST]"+r" (dst), [SRC]"+r" (src)
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: "w"(fullVector)
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: "memory", "d4", "d5", "d6"
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);
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#else
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asm volatile (
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"vld3.8 { d0, d1, d2 }, [%[SRC]] !\n\t"
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"vswp d0, d2\n\t"
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"vst4.8 { d0, d1, d2, d3 }, [%[DST],:64] !\n\t"
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: [DST]"+r" (dst), [SRC]"+r" (src)
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: "w"(fullVector)
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: "memory", "d0", "d1", "d2"
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);
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#endif
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} while (dst < simdEnd);
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}
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while (dst != end) {
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*dst++ = qRgb(src[0], src[1], src[2]);
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src += 3;
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}
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}
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void convert_RGB888_to_RGB32_neon(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
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{
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Q_ASSERT(src->format == QImage::Format_RGB888);
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Q_ASSERT(dest->format == QImage::Format_RGB32 || dest->format == QImage::Format_ARGB32 || dest->format == QImage::Format_ARGB32_Premultiplied);
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Q_ASSERT(src->width == dest->width);
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Q_ASSERT(src->height == dest->height);
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const uchar *src_data = (uchar *) src->data;
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quint32 *dest_data = (quint32 *) dest->data;
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for (int i = 0; i < src->height; ++i) {
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qt_convert_rgb888_to_rgb32_neon(dest_data, src_data, src->width);
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src_data += src->bytes_per_line;
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dest_data = (quint32 *)((uchar*)dest_data + dest->bytes_per_line);
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}
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}
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QT_END_NAMESPACE
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#endif // QT_HAVE_NEON
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