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Use universal intrinsics in bayer2Gray

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This commit is contained in:
Letu Ren 2024-12-18 04:47:28 +08:00
parent d9a139f9e8
commit f1a775825f
1 changed files with 53 additions and 52 deletions
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105
modules/imgproc/src/demosaicing.cpp
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@ -123,12 +123,12 @@ public:
}
};
#if CV_SIMD128
#if CV_SIMD || CV_SIMD_SCALABLE
class SIMDBayerInterpolator_8u
{
public:
int bayer2Gray(const uchar* bayer, int bayer_step, uchar* dst,
int width, int bcoeff, int gcoeff, int rcoeff) const
static int bayer2Gray(const uchar* bayer, int bayer_step, uchar* dst,
int width, int bcoeff, int gcoeff, int rcoeff)
{
#if CV_NEON
uint16x8_t masklo = vdupq_n_u16(255);
@ -177,96 +177,97 @@ public:
vst1_u8(dst + 8, p.val[1]);
}
#else
v_uint16x8 v255 = v_setall_u16(255);
v_int16x8 v_descale = v_setall_s16(static_cast<short>(1 << 14));
v_int16x8 dummy;
v_int16x8 cxrb;
v_int16x8 cxg2;
v_zip(v_setall_s16(static_cast<short>(rcoeff)),
v_setall_s16(static_cast<short>(bcoeff)),
v_uint16 v255 = vx_setall_u16(255);
v_int16 v_descale = vx_setall_s16(static_cast<short>(1 << 14));
v_int16 dummy;
v_int16 cxrb;
v_int16 cxg2;
v_zip(vx_setall_s16(static_cast<short>(rcoeff)),
vx_setall_s16(static_cast<short>(bcoeff)),
cxrb,
dummy);
v_zip(v_setall_s16(static_cast<short>(gcoeff)),
v_setall_s16(static_cast<short>(2)),
v_zip(vx_setall_s16(static_cast<short>(gcoeff)),
vx_setall_s16(static_cast<short>(2)),
cxg2,
dummy);
const uchar* bayer_end = bayer + width;
for (; bayer < bayer_end - 14; bayer += 14, dst += 14)
const int step = VTraits<v_uint8>::vlanes() - 2;
for (; bayer < bayer_end - step; bayer += step, dst += step)
{
v_uint16x8 first_line = v_reinterpret_as_u16(v_load(bayer));
v_uint16x8 second_line = v_reinterpret_as_u16(v_load(bayer + bayer_step));
v_uint16x8 third_line = v_reinterpret_as_u16(v_load(bayer + bayer_step * 2));
v_uint16 first_line = v_reinterpret_as_u16(vx_load(bayer));
v_uint16 second_line = v_reinterpret_as_u16(vx_load(bayer + bayer_step));
v_uint16 third_line = v_reinterpret_as_u16(vx_load(bayer + bayer_step * 2));
// bayer[0]
v_uint16x8 first_line0 = v_and(first_line, v255);
v_uint16 first_line0 = v_and(first_line, v255);
// bayer[bayer_step*2]
v_uint16x8 third_line0 = v_and(third_line, v255);
v_uint16 third_line0 = v_and(third_line, v255);
// bayer[0] + bayer[bayer_step*2]
v_uint16x8 first_third_line0 = v_add(first_line0, third_line0);
v_uint16 first_third_line0 = v_add(first_line0, third_line0);
// bayer[2] + bayer[bayer_step*2+2]
v_uint16x8 first_third_line2 = v_rotate_right<1>(first_third_line0);
v_uint16 first_third_line2 = v_rotate_right<1>(first_third_line0);
// bayer[0] + bayer[2] + bayer[bayer_step*2] + bayer[bayer_step*2+2]
v_int16x8 r0 = v_reinterpret_as_s16(v_add(first_third_line0, first_third_line2));
v_int16 r0 = v_reinterpret_as_s16(v_add(first_third_line0, first_third_line2));
// (bayer[2] + bayer[bayer_step*2+2]) * 2
v_int16x8 r1 = v_reinterpret_as_s16(v_shl<1>(first_third_line2));
v_int16 r1 = v_reinterpret_as_s16(v_shl<1>(first_third_line2));
// bayer[bayer_step+1]
v_uint16x8 second_line1 = v_shr<8>(second_line);
v_uint16 second_line1 = v_shr<8>(second_line);
// bayer[bayer_step+1] * 4
v_int16x8 b0 = v_reinterpret_as_s16(v_shl<2>(second_line1));
v_int16 b0 = v_reinterpret_as_s16(v_shl<2>(second_line1));
// bayer[bayer_step+3]
v_uint16x8 second_line3 = v_rotate_right<1>(second_line1);
v_uint16 second_line3 = v_rotate_right<1>(second_line1);
// bayer[bayer_step+1] + bayer[bayer_step+3]
v_uint16x8 second_line13 = v_add(second_line1, second_line3);
v_uint16 second_line13 = v_add(second_line1, second_line3);
// (bayer[bayer_step+1] + bayer[bayer_step+3]) * 2
v_int16x8 b1 = v_reinterpret_as_s16(v_shl(second_line13, 1));
v_int16 b1 = v_reinterpret_as_s16(v_shl(second_line13, 1));
// bayer[1]
v_uint16x8 first_line1 = v_shr<8>(first_line);
v_uint16 first_line1 = v_shr<8>(first_line);
// bayer[bayer_step]
v_uint16x8 second_line0 = v_and(second_line, v255);
v_uint16 second_line0 = v_and(second_line, v255);
// bayer[bayer_step+2]
v_uint16x8 second_line2 = v_rotate_right<1>(second_line0);
v_uint16 second_line2 = v_rotate_right<1>(second_line0);
// bayer[bayer_step] + bayer[bayer_step+2]
v_uint16x8 second_line02 = v_add(second_line0, second_line2);
v_uint16 second_line02 = v_add(second_line0, second_line2);
// bayer[bayer_step*2+1]
v_uint16x8 third_line1 = v_shr<8>(third_line);
v_uint16 third_line1 = v_shr<8>(third_line);
// bayer[1] + bayer[bayer_step*2+1]
v_uint16x8 first_third_line1 = v_add(first_line1, third_line1);
v_uint16 first_third_line1 = v_add(first_line1, third_line1);
// bayer[1] + bayer[bayer_step] + bayer[bayer_step+2] + bayer[bayer_step*2+1]
v_int16x8 g0 = v_reinterpret_as_s16(v_add(first_third_line1, second_line02));
v_int16 g0 = v_reinterpret_as_s16(v_add(first_third_line1, second_line02));
// bayer[bayer_step+2] * 4
v_int16x8 g1 = v_reinterpret_as_s16(v_shl<2>(second_line2));
v_int16 g1 = v_reinterpret_as_s16(v_shl<2>(second_line2));
v_int16x8 rb0;
v_int16x8 rb1;
v_int16x8 rb2;
v_int16x8 rb3;
v_int16 rb0;
v_int16 rb1;
v_int16 rb2;
v_int16 rb3;
v_zip(r0, b0, rb0, rb1);
v_zip(r1, b1, rb2, rb3);
v_int16x8 gd0;
v_int16x8 gd1;
v_int16x8 gd2;
v_int16x8 gd3;
v_int16 gd0;
v_int16 gd1;
v_int16 gd2;
v_int16 gd3;
v_zip(g0, v_descale, gd0, gd1);
v_zip(g1, v_descale, gd2, gd3);
v_int32x4 gray_even0 = v_shr<16>(v_add(v_dotprod(rb0, cxrb), v_dotprod(gd0, cxg2)));
v_int32x4 gray_even1 = v_shr<16>(v_add(v_dotprod(rb1, cxrb), v_dotprod(gd1, cxg2)));
v_int32x4 gray_odd0 = v_shr<16>(v_add(v_dotprod(rb2, cxrb), v_dotprod(gd2, cxg2)));
v_int32x4 gray_odd1 = v_shr<16>(v_add(v_dotprod(rb3, cxrb), v_dotprod(gd3, cxg2)));
v_int32 gray_even0 = v_shr<16>(v_add(v_dotprod(rb0, cxrb), v_dotprod(gd0, cxg2)));
v_int32 gray_even1 = v_shr<16>(v_add(v_dotprod(rb1, cxrb), v_dotprod(gd1, cxg2)));
v_int32 gray_odd0 = v_shr<16>(v_add(v_dotprod(rb2, cxrb), v_dotprod(gd2, cxg2)));
v_int32 gray_odd1 = v_shr<16>(v_add(v_dotprod(rb3, cxrb), v_dotprod(gd3, cxg2)));
v_int16x8 gray_even = v_pack(gray_even0, gray_even1);
v_int16x8 gray_odd = v_pack(gray_odd0, gray_odd1);
v_int16 gray_even = v_pack(gray_even0, gray_even1);
v_int16 gray_odd = v_pack(gray_odd0, gray_odd1);
v_int16x8 gray_d0;
v_int16x8 gray_d1;
v_int16 gray_d0;
v_int16 gray_d1;
v_zip(gray_even, gray_odd, gray_d0, gray_d1);
v_uint8x16 gray = v_pack(v_reinterpret_as_u16(gray_d0), v_reinterpret_as_u16(gray_d1));
v_uint8 gray = v_pack(v_reinterpret_as_u16(gray_d0), v_reinterpret_as_u16(gray_d1));
v_store(dst, gray);
}