inline void vnst(u8* dst, uint32x4_t v1, uint32x4_t v2) { vst1_u8(dst, vmovn_u16(vcombine_u16(vmovn_u32(v1), vmovn_u32(v2)))); }
template <bool compensation> SIMD_INLINE uint8x8_t ReduceRow(const uint16x8_t & r0, const uint16x8_t & r1, const uint16x8_t & r2)
{
return vmovn_u16(DivideBy16<compensation>(BinomialSum16(r0, r1, r2)));
}
SIMD_INLINE uint8x8_t BgraToGray(uint8x8x4_t bgra)
{
return vmovn_u16(BgrToGray(vmovl_u8(bgra.val[0]), vmovl_u8(bgra.val[1]), vmovl_u8(bgra.val[2])));
}
int neon_new(DATA32* _p0, DATA32* _p1, DATA32* _p2, DATA32* _p3, DATA32* _ax, DATA32 _ay, DATA32* result, int len) {
int ay = _ay;
int i;
DATA32* pbuf = result;
uint16x4_t ay_16x4;
uint16x4_t p0_16x4;
uint16x4_t p2_16x4;
uint16x8_t ax_16x8;
uint16x8_t p0_p2_16x8;
uint16x8_t p1_p3_16x8;
uint16x8_t x255_16x8;
uint32x2_t p0_p2_32x2;
uint32x2_t p1_p3_32x2;
uint32x2_t res_32x2;
uint8x8_t p0_p2_8x8;
uint8x8_t p1_p3_8x8;
uint8x8_t p2_8x8;
uint16x4_t temp_16x4;
ay_16x4 = vdup_n_u16(ay);
x255_16x8 = vdupq_n_u16(0xff);
for(i = 0; i < len; i++) {
DATA32 p0 = *_p0++;
DATA32 p1 = *_p1++;
DATA32 p2 = *_p2++;
DATA32 p3 = *_p3++;
int ax = *_ax++;
if (p0 | p1 | p2 | p3)
{
ax_16x8 = vdupq_n_u16(ax);
p0_p2_32x2 = vset_lane_u32(p0, p0_p2_32x2, 0);
p0_p2_32x2 = vset_lane_u32(p2, p0_p2_32x2, 1);
p1_p3_32x2 = vset_lane_u32(p1, p1_p3_32x2, 0);
p1_p3_32x2 = vset_lane_u32(p3, p1_p3_32x2, 1);
p0_p2_8x8 = vreinterpret_u8_u32(p0_p2_32x2);
p1_p3_8x8 = vreinterpret_u8_u32(p1_p3_32x2);
p1_p3_16x8 = vmovl_u8(p1_p3_8x8);
p0_p2_16x8 = vmovl_u8(p0_p2_8x8);
p1_p3_16x8 = vsubq_u16(p1_p3_16x8, p0_p2_16x8);
p1_p3_16x8 = vmulq_u16(p1_p3_16x8, ax_16x8);
p1_p3_16x8 = vshrq_n_u16(p1_p3_16x8, 8);
p1_p3_16x8 = vaddq_u16(p1_p3_16x8, p0_p2_16x8);
p1_p3_16x8 = vandq_u16(p1_p3_16x8, x255_16x8);
p0_16x4 = vget_low_u16(p1_p3_16x8);
p2_16x4 = vget_high_u16(p1_p3_16x8);
p2_16x4 = vsub_u16(p2_16x4, p0_16x4);
p2_16x4 = vmul_u16(p2_16x4, ay_16x4);
p2_16x4 = vshr_n_u16(p2_16x4, 8);
p2_16x4 = vadd_u16(p2_16x4, p0_16x4);
p1_p3_16x8 = vcombine_u16(temp_16x4, p2_16x4);
p2_8x8 = vmovn_u16(p1_p3_16x8);
res_32x2 = vreinterpret_u32_u8(p2_8x8);
vst1_lane_u32(pbuf++, res_32x2, 1);
}
else
*pbuf++ = p0;
}
return 0;
}
template <bool align> SIMD_INLINE uint8x8_t ReduceRow(const Buffer & buffer, size_t offset)
{
return vmovn_u16(DivideBy64(BinomialSum16(
Load<align>(buffer.src0 + offset), Load<align>(buffer.src1 + offset),
Load<align>(buffer.src2 + offset), Load<align>(buffer.src3 + offset))));
}