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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module 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 <qimage.h>
#include <private/qimage_p.h>
#include <private/qsimd_p.h>
#if defined(__ARM_NEON__)
QT_BEGIN_NAMESPACE
Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_neon(quint32 *dst, const uchar *src, int len)
{
if (!len)
return;
const quint32 *const end = dst + len;
// align dst on 64 bits
const int offsetToAlignOn8Bytes = (reinterpret_cast<quintptr>(dst) >> 2) & 0x1;
for (int i = 0; i < offsetToAlignOn8Bytes; ++i) {
*dst++ = qRgb(src[0], src[1], src[2]);
src += 3;
}
if ((len - offsetToAlignOn8Bytes) >= 8) {
const quint32 *const simdEnd = end - 7;
#if !defined(Q_PROCESSOR_ARM_64)
register uint8x8_t fullVector asm ("d3") = vdup_n_u8(0xff);
do {
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
asm volatile (
"vld3.8 { d4, d5, d6 }, [%[SRC]] !\n\t"
"vst4.8 { d3, d4, d5, d6 }, [%[DST],:64] !\n\t"
: [DST]"+r" (dst), [SRC]"+r" (src)
: "w"(fullVector)
: "memory", "d4", "d5", "d6"
);
#else
asm volatile (
"vld3.8 { d0, d1, d2 }, [%[SRC]] !\n\t"
"vswp d0, d2\n\t"
"vst4.8 { d0, d1, d2, d3 }, [%[DST],:64] !\n\t"
: [DST]"+r" (dst), [SRC]"+r" (src)
: "w"(fullVector)
: "memory", "d0", "d1", "d2"
);
#endif
} while (dst < simdEnd);
#else
register uint8x8_t fullVector asm ("v3") = vdup_n_u8(0xff);
do {
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
asm volatile (
"ld3 { v4.8b, v5.8b, v6.8b }, [%[SRC]], #24 \n\t"
"st4 { v3.8b, v4.8b, v5.8b, v6.8b }, [%[DST]], #32 \n\t"
: [DST]"+r" (dst), [SRC]"+r" (src)
: "w"(fullVector)
: "memory", "v4", "v5", "v6"
);
#else
asm volatile (
"ld3 { v0.8b, v1.8b, v2.8b }, [%[SRC]], #24 \n\t"
"mov v4.8b, v2.8b\n\t"
"mov v2.8b, v0.8b\n\t"
"mov v0.8b, v4.8b\n\t"
"st4 { v0.8b, v1.8b, v2.8b, v3.8b }, [%[DST]], #32 \n\t"
: [DST]"+r" (dst), [SRC]"+r" (src)
: "w"(fullVector)
: "memory", "v0", "v1", "v2", "v4"
);
#endif
} while (dst < simdEnd);
#endif
}
while (dst != end) {
*dst++ = qRgb(src[0], src[1], src[2]);
src += 3;
}
}
void convert_RGB888_to_RGB32_neon(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
{
Q_ASSERT(src->format == QImage::Format_RGB888);
Q_ASSERT(dest->format == QImage::Format_RGB32 || dest->format == QImage::Format_ARGB32 || dest->format == QImage::Format_ARGB32_Premultiplied);
Q_ASSERT(src->width == dest->width);
Q_ASSERT(src->height == dest->height);
const uchar *src_data = (uchar *) src->data;
quint32 *dest_data = (quint32 *) dest->data;
for (int i = 0; i < src->height; ++i) {
qt_convert_rgb888_to_rgb32_neon(dest_data, src_data, src->width);
src_data += src->bytes_per_line;
dest_data = (quint32 *)((uchar*)dest_data + dest->bytes_per_line);
}
}
QT_END_NAMESPACE
#endif // defined(__ARM_NEON__)
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