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39
40#include <qimage.h>
41#include <private/qimage_p.h>
42#include <private/qsimd_p.h>
43
44#if defined(__ARM_NEON__)
45
46QT_BEGIN_NAMESPACE
47
48Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_neon(quint32 *dst, const uchar *src, int len)
49{
50 if (!len)
51 return;
52
53 const quint32 *const end = dst + len;
54
55 // align dst on 128 bits
56 const int offsetToAlignOn16Bytes = (reinterpret_cast<quintptr>(dst) >> 2) & 0x3;
57 for (int i = 0; i < offsetToAlignOn16Bytes; ++i) {
58 *dst++ = qRgb(src[0], src[1], src[2]);
59 src += 3;
60 }
61
62 if ((len - offsetToAlignOn16Bytes) >= 16) {
63 const quint32 *const simdEnd = end - 15;
64 uint8x16x4_t dstVector;
65#if Q_BYTE_ORDER == Q_BIG_ENDIAN
66 dstVector.val[0] = vdupq_n_u8(0xff);
67#else
68 dstVector.val[3] = vdupq_n_u8(0xff);
69#endif
70 do {
71 uint8x16x3_t srcVector = vld3q_u8(src);
72 src += 3 * 16;
73#if Q_BYTE_ORDER == Q_BIG_ENDIAN
74 dstVector.val[1] = srcVector.val[0];
75 dstVector.val[2] = srcVector.val[1];
76 dstVector.val[3] = srcVector.val[2];
77#else
78 dstVector.val[0] = srcVector.val[2];
79 dstVector.val[1] = srcVector.val[1];
80 dstVector.val[2] = srcVector.val[0];
81#endif
82 vst4q_u8(reinterpret_cast<uint8_t*>(dst), dstVector);
83 dst += 16;
84 } while (dst < simdEnd);
85 }
86
87 int i = 0;
88 int length = end - dst;
89 SIMD_EPILOGUE(i, length, 15) {
90 *dst++ = qRgb(src[0], src[1], src[2]);
91 src += 3;
92 }
93}
94
95void 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
112QT_END_NAMESPACE
113
114#endif // defined(__ARM_NEON__)
115