mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2024-11-25 11:40:44 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

SymmRowSmallVec_8u32s 1x3 asymmetric

Browse Source 
NEON speedup: 1.95x
Auto-vect speedup: 1.17x

Test kernel: [-2, 0, 2]
This commit is contained in:
orestis 2014-12-19 22:15:37 +02:00
parent 969a218057
commit 2e7b9a2c0f
1 changed files with 24 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
modules/imgproc/src/filter.cpp
View File

@ -2370,9 +2370,32 @@ struct SymmRowSmallVec_8u32s
vst1q_s32((int32_t *)(dst + i), vmovl_s16(vget_low_s16(y0)));
vst1q_s32((int32_t *)(dst + i + 4), vmovl_s16(vget_high_s16(y0)));
}
}
else
{
return 0;
int32x4_t k32 = vdupq_n_s32(0);
k32 = vld1q_lane_s32(kx + 1, k32, 1);
int16x4_t k = vqmovn_s32(k32);
uint8x8_t z = vdup_n_u8(0);
for( ; i <= width - 8; i += 8, src += 8 )
{
uint8x8_t x0, x1;
x0 = vld1_u8( (uint8_t *) (src - cn) );
x1 = vld1_u8( (uint8_t *) (src + cn) );
int16x8_t y0;
int32x4_t y1, y2;
y0 = vsubq_s16(vreinterpretq_s16_u16(vaddl_u8(x1, z)),
vreinterpretq_s16_u16(vaddl_u8(x0, z)));
y1 = vmull_lane_s16(vget_low_s16(y0), k, 1);
y2 = vmull_lane_s16(vget_high_s16(y0), k, 1);
vst1q_s32((int32_t *)(dst + i), y1);
vst1q_s32((int32_t *)(dst + i + 4), y2);
}
}
}
else if( _ksize == 5 )