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SymmColumnVec_32s8u asymm

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NEON speedup: 2.95x
Auto-vect speedup: 1x

Test kernel: [-0.9432, -1.1528, 0, 1.1528, 0.9432]
This commit is contained in:
orestis
2014-12-19 22:29:54 +02:00
parent 4f5916f12d
commit 80a0364465
1 changed files with 49 additions and 1 deletions
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50
modules/imgproc/src/filter.cpp
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@@ -2539,7 +2539,55 @@ struct SymmColumnVec_32s8u
}
else
{
return 0;
float32x2_t k32;
k32 = vdup_n_f32(0);
k32 = vld1_lane_f32(ky + 1, k32, 1);
for( ; i <= width - 8; i += 8 )
{
float32x4_t accl, acch;
float32x4_t f1l, f1h, f2l, f2h;
S = src[1] + i;
S2 = src[-1] + i;
f1l = vcvtq_f32_s32( vld1q_s32(S) );
f1h = vcvtq_f32_s32( vld1q_s32(S + 4) );
f2l = vcvtq_f32_s32( vld1q_s32(S2) );
f2h = vcvtq_f32_s32( vld1q_s32(S2 + 4) );
accl = acch = d4;
accl = vmlaq_lane_f32(accl, vsubq_f32(f1l, f2l), k32, 1);
acch = vmlaq_lane_f32(acch, vsubq_f32(f1h, f2h), k32, 1);
for( k = 2; k <= ksize2; k++ )
{
S = src[k] + i;
S2 = src[-k] + i;
float32x4_t f3l, f3h, f4l, f4h;
f3l = vcvtq_f32_s32( vld1q_s32(S) );
f3h = vcvtq_f32_s32( vld1q_s32(S + 4) );
f4l = vcvtq_f32_s32( vld1q_s32(S2) );
f4h = vcvtq_f32_s32( vld1q_s32(S2 + 4) );
accl = vmlaq_n_f32(accl, vsubq_f32(f3l, f4l), ky[k]);
acch = vmlaq_n_f32(acch, vsubq_f32(f3h, f4h), ky[k]);
}
int32x4_t s32l, s32h;
s32l = vcvtq_s32_f32(accl);
s32h = vcvtq_s32_f32(acch);
int16x4_t s16l, s16h;
s16l = vqmovn_s32(s32l);
s16h = vqmovn_s32(s32h);
uint8x8_t u8;
u8 = vqmovun_s16(vcombine_s16(s16l, s16h));
vst1_u8((uint8_t *)(dst + i), u8);
}
}
return i;