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     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include <qimage.h>

    43 #include <private/qimage_p.h>

    44 #include <private/qsimd_p.h>

    45 

    46 #ifdef QT_HAVE_NEON

    47 

    48 QT_BEGIN_NAMESPACE

    49 

    50 Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_neon(quint32 *dst, const uchar *src, int len)

    51 {

    52     if (!len)

    53         return;

    54 

    55     const quint32 *const end = dst + len;

    56 

    57     // align dst on 64 bits

    58     const int offsetToAlignOn8Bytes = (reinterpret_cast<quintptr>(dst) >> 2) & 0x1;

    59     for (int i = 0; i < offsetToAlignOn8Bytes; ++i) {

    60         *dst++ = qRgb(src[0], src[1], src[2]);

    61         src += 3;

    62     }

    63 

    64     if ((len - offsetToAlignOn8Bytes) >= 8) {

    65         const quint32 *const simdEnd = end - 7;

    66         register uint8x8_t fullVector asm ("d3") = vdup_n_u8(0xff);

    67         do {

    68 #if Q_BYTE_ORDER == Q_BIG_ENDIAN

    69             asm volatile (

    70                 "vld3.8     { d4, d5, d6 }, [%[SRC]] !\n\t"

    71                 "vst4.8     { d3, d4, d5, d6 }, [%[DST],:64] !\n\t"

    72                 : [DST]"+r" (dst), [SRC]"+r" (src)

    73                 : "w"(fullVector)

    74                 : "memory", "d4", "d5", "d6"

    75             );

    76 #else

    77             asm volatile (

    78                 "vld3.8     { d0, d1, d2 }, [%[SRC]] !\n\t"

    79                 "vswp d0, d2\n\t"

    80                 "vst4.8     { d0, d1, d2, d3 }, [%[DST],:64] !\n\t"

    81                 : [DST]"+r" (dst), [SRC]"+r" (src)

    82                 : "w"(fullVector)

    83                 : "memory", "d0", "d1", "d2"

    84             );

    85 #endif

    86         } while (dst < simdEnd);

    87     }

    88 

    89     while (dst != end) {

    90         *dst++ = qRgb(src[0], src[1], src[2]);

    91         src += 3;

    92     }

    93 }

    94 

    95 void convert_RGB888_to_RGB32_neon(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)

    96 {

    97     Q_ASSERT(src->format == QImage::Format_RGB888);

    98     Q_ASSERT(dest->format == QImage::Format_RGB32 || dest->format == QImage::Format_ARGB32 || dest->format == QImage::Format_ARGB32_Premultiplied);

    99     Q_ASSERT(src->width == dest->width);

   100     Q_ASSERT(src->height == dest->height);

   101 

   102     const uchar *src_data = (uchar *) src->data;

   103     quint32 *dest_data = (quint32 *) dest->data;

   104 

   105     for (int i = 0; i < src->height; ++i) {

   106         qt_convert_rgb888_to_rgb32_neon(dest_data, src_data, src->width);

   107         src_data += src->bytes_per_line;

   108         dest_data = (quint32 *)((uchar*)dest_data + dest->bytes_per_line);

   109     }

   110 }

   111 

   112 QT_END_NAMESPACE

   113 

   114 #endif // QT_HAVE_NEON