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Diffstat (limited to 'src/gui/image/qimage_neon.cpp')
| -rw-r--r-- | src/gui/image/qimage_neon.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/gui/image/qimage_neon.cpp b/src/gui/image/qimage_neon.cpp new file mode 100644 index 0000000..15bf472 --- /dev/null +++ b/src/gui/image/qimage_neon.cpp @@ -0,0 +1,114 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <qimage.h> +#include <private/qimage_p.h> +#include <private/qsimd_p.h> + +#ifdef QT_HAVE_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; + 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); + } + + 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 // QT_HAVE_NEON |