generic-library/opencv
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correct neon rounding

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This commit is contained in:
Ilya Lavrenov 2014-09-25 07:50:06 +00:00
parent 4b3f2c1972
commit 345b1369be
2 changed files with 65 additions and 30 deletions
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35
modules/core/include/opencv2/core/base.hpp
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@ -568,6 +568,41 @@ CV_EXPORTS int getIppStatus();
CV_EXPORTS String getIppErrorLocation();
} // ipp
#if CV_NEON
inline int32x2_t cv_vrnd_s32_f32(float32x2_t v)
{
static int32x2_t v_sign = vdup_n_s32(1 << 31),
v_05 = vreinterpret_s32_f32(vdup_n_f32(0.5f));
int32x2_t v_addition = vorr_s32(v_05, vand_s32(v_sign, vreinterpret_s32_f32(v)));
return vcvt_s32_f32(vadd_f32(v, vreinterpret_f32_s32(v_addition)));
}
inline int32x4_t cv_vrndq_s32_f32(float32x4_t v)
{
static int32x4_t v_sign = vdupq_n_s32(1 << 31),
v_05 = vreinterpretq_s32_f32(vdupq_n_f32(0.5f));
int32x4_t v_addition = vorrq_s32(v_05, vandq_s32(v_sign, vreinterpretq_s32_f32(v)));
return vcvtq_s32_f32(vaddq_f32(v, vreinterpretq_f32_s32(v_addition)));
}
inline uint32x2_t cv_vrnd_u32_f32(float32x2_t v)
{
static float32x2_t v_05 = vdup_n_f32(0.5f);
return vcvt_u32_f32(vadd_f32(v, v_05));
}
inline uint32x4_t cv_vrndq_u32_f32(float32x4_t v)
{
static float32x4_t v_05 = vdupq_n_f32(0.5f);
return vcvtq_u32_f32(vaddq_f32(v, v_05));
}
#endif
} // cv
#endif //__OPENCV_CORE_BASE_HPP__

60
modules/core/src/convert.cpp
View File

@ -1276,10 +1276,10 @@ struct cvtScaleAbs_SIMD<uchar, uchar, float>
float32x4_t v_dst_3 = vmulq_n_f32(vcvtq_f32_u32(v_quat), scale);
v_dst_3 = vabsq_f32(vaddq_f32(v_dst_3, v_shift));
uint16x8_t v_dsti_0 = vcombine_u16(vqmovn_u32(vcvtq_u32_f32(v_dst_0)),
vqmovn_u32(vcvtq_u32_f32(v_dst_1)));
uint16x8_t v_dsti_1 = vcombine_u16(vqmovn_u32(vcvtq_u32_f32(v_dst_2)),
vqmovn_u32(vcvtq_u32_f32(v_dst_3)));
uint16x8_t v_dsti_0 = vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(v_dst_0)),
vqmovn_u32(cv_vrndq_u32_f32(v_dst_1)));
uint16x8_t v_dsti_1 = vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(v_dst_2)),
vqmovn_u32(cv_vrndq_u32_f32(v_dst_3)));
vst1q_u8(dst + x, vcombine_u8(vqmovn_u16(v_dsti_0), vqmovn_u16(v_dsti_1)));
}
@ -1320,10 +1320,10 @@ struct cvtScaleAbs_SIMD<schar, uchar, float>
float32x4_t v_dst_3 = vmulq_n_f32(vcvtq_f32_s32(v_quat), scale);
v_dst_3 = vabsq_f32(vaddq_f32(v_dst_3, v_shift));
uint16x8_t v_dsti_0 = vcombine_u16(vqmovn_u32(vcvtq_u32_f32(v_dst_0)),
vqmovn_u32(vcvtq_u32_f32(v_dst_1)));
uint16x8_t v_dsti_1 = vcombine_u16(vqmovn_u32(vcvtq_u32_f32(v_dst_2)),
vqmovn_u32(vcvtq_u32_f32(v_dst_3)));
uint16x8_t v_dsti_0 = vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(v_dst_0)),
vqmovn_u32(cv_vrndq_u32_f32(v_dst_1)));
uint16x8_t v_dsti_1 = vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(v_dst_2)),
vqmovn_u32(cv_vrndq_u32_f32(v_dst_3)));
vst1q_u8(dst + x, vcombine_u8(vqmovn_u16(v_dsti_0), vqmovn_u16(v_dsti_1)));
}
@ -1353,8 +1353,8 @@ struct cvtScaleAbs_SIMD<ushort, uchar, float>
float32x4_t v_dst_1 = vmulq_n_f32(vcvtq_f32_u32(v_half), scale);
v_dst_1 = vabsq_f32(vaddq_f32(v_dst_1, v_shift));
uint16x8_t v_dst = vcombine_u16(vqmovn_u32(vcvtq_u32_f32(v_dst_0)),
vqmovn_u32(vcvtq_u32_f32(v_dst_1)));
uint16x8_t v_dst = vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(v_dst_0)),
vqmovn_u32(cv_vrndq_u32_f32(v_dst_1)));
vst1_u8(dst + x, vqmovn_u16(v_dst));
}
@ -1384,8 +1384,8 @@ struct cvtScaleAbs_SIMD<short, uchar, float>
float32x4_t v_dst_1 = vmulq_n_f32(vcvtq_f32_s32(v_half), scale);
v_dst_1 = vabsq_f32(vaddq_f32(v_dst_1, v_shift));
uint16x8_t v_dst = vcombine_u16(vqmovn_u32(vcvtq_u32_f32(v_dst_0)),
vqmovn_u32(vcvtq_u32_f32(v_dst_1)));
uint16x8_t v_dst = vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(v_dst_0)),
vqmovn_u32(cv_vrndq_u32_f32(v_dst_1)));
vst1_u8(dst + x, vqmovn_u16(v_dst));
}
@ -1407,11 +1407,11 @@ struct cvtScaleAbs_SIMD<int, uchar, float>
{
float32x4_t v_dst_0 = vmulq_n_f32(vcvtq_f32_s32(vld1q_s32(src + x)), scale);
v_dst_0 = vabsq_f32(vaddq_f32(v_dst_0, v_shift));
uint16x4_t v_dsti_0 = vqmovn_u32(vcvtq_u32_f32(v_dst_0));
uint16x4_t v_dsti_0 = vqmovn_u32(cv_vrndq_u32_f32(v_dst_0));
float32x4_t v_dst_1 = vmulq_n_f32(vcvtq_f32_s32(vld1q_s32(src + x + 4)), scale);
v_dst_1 = vabsq_f32(vaddq_f32(v_dst_1, v_shift));
uint16x4_t v_dsti_1 = vqmovn_u32(vcvtq_u32_f32(v_dst_1));
uint16x4_t v_dsti_1 = vqmovn_u32(cv_vrndq_u32_f32(v_dst_1));
uint16x8_t v_dst = vcombine_u16(v_dsti_0, v_dsti_1);
vst1_u8(dst + x, vqmovn_u16(v_dst));
@ -1434,11 +1434,11 @@ struct cvtScaleAbs_SIMD<float, uchar, float>
{
float32x4_t v_dst_0 = vmulq_n_f32(vld1q_f32(src + x), scale);
v_dst_0 = vabsq_f32(vaddq_f32(v_dst_0, v_shift));
uint16x4_t v_dsti_0 = vqmovn_u32(vcvtq_u32_f32(v_dst_0));
uint16x4_t v_dsti_0 = vqmovn_u32(cv_vrndq_u32_f32(v_dst_0));
float32x4_t v_dst_1 = vmulq_n_f32(vld1q_f32(src + x + 4), scale);
v_dst_1 = vabsq_f32(vaddq_f32(v_dst_1, v_shift));
uint16x4_t v_dsti_1 = vqmovn_u32(vcvtq_u32_f32(v_dst_1));
uint16x4_t v_dsti_1 = vqmovn_u32(cv_vrndq_u32_f32(v_dst_1));
uint16x8_t v_dst = vcombine_u16(v_dsti_0, v_dsti_1);
vst1_u8(dst + x, vqmovn_u16(v_dst));
@ -2011,12 +2011,12 @@ struct Cvt_SIMD<float, uchar>
for ( ; x <= width - 16; x += 16)
{
int32x4_t v_src1 = vcvtq_s32_f32(vld1q_f32(src + x));
int32x4_t v_src2 = vcvtq_s32_f32(vld1q_f32(src + x + 4));
int32x4_t v_src3 = vcvtq_s32_f32(vld1q_f32(src + x + 8));
int32x4_t v_src4 = vcvtq_s32_f32(vld1q_f32(src + x + 12));
uint8x8_t v_dst1 = vqmovn_u16(vcombine_u16(vqmovun_s32(v_src1), vqmovun_s32(v_src2)));
uint8x8_t v_dst2 = vqmovn_u16(vcombine_u16(vqmovun_s32(v_src3), vqmovun_s32(v_src4)));
uint32x4_t v_src1 = cv_vrndq_u32_f32(vld1q_f32(src + x));
uint32x4_t v_src2 = cv_vrndq_u32_f32(vld1q_f32(src + x + 4));
uint32x4_t v_src3 = cv_vrndq_u32_f32(vld1q_f32(src + x + 8));
uint32x4_t v_src4 = cv_vrndq_u32_f32(vld1q_f32(src + x + 12));
uint8x8_t v_dst1 = vqmovn_u16(vcombine_u16(vqmovn_u32(v_src1), vqmovn_u32(v_src2)));
uint8x8_t v_dst2 = vqmovn_u16(vcombine_u16(vqmovn_u32(v_src3), vqmovn_u32(v_src4)));
vst1q_u8(dst + x, vcombine_u8(v_dst1, v_dst2));
}
@ -2033,10 +2033,10 @@ struct Cvt_SIMD<float, schar>
for ( ; x <= width - 16; x += 16)
{
int32x4_t v_src1 = vcvtq_s32_f32(vld1q_f32(src + x));
int32x4_t v_src2 = vcvtq_s32_f32(vld1q_f32(src + x + 4));
int32x4_t v_src3 = vcvtq_s32_f32(vld1q_f32(src + x + 8));
int32x4_t v_src4 = vcvtq_s32_f32(vld1q_f32(src + x + 12));
int32x4_t v_src1 = cv_vrndq_s32_f32(vld1q_f32(src + x));
int32x4_t v_src2 = cv_vrndq_s32_f32(vld1q_f32(src + x + 4));
int32x4_t v_src3 = cv_vrndq_s32_f32(vld1q_f32(src + x + 8));
int32x4_t v_src4 = cv_vrndq_s32_f32(vld1q_f32(src + x + 12));
int8x8_t v_dst1 = vqmovn_s16(vcombine_s16(vqmovn_s32(v_src1), vqmovn_s32(v_src2)));
int8x8_t v_dst2 = vqmovn_s16(vcombine_s16(vqmovn_s32(v_src3), vqmovn_s32(v_src4)));
vst1q_s8(dst + x, vcombine_s8(v_dst1, v_dst2));
@ -2056,9 +2056,9 @@ struct Cvt_SIMD<float, ushort>
for ( ; x <= width - 8; x += 8)
{
int32x4_t v_src1 = vcvtq_s32_f32(vld1q_f32(src + x));
int32x4_t v_src2 = vcvtq_s32_f32(vld1q_f32(src + x + 4));
vst1q_u16(dst + x, vcombine_u16(vqmovun_s32(v_src1), vqmovun_s32(v_src2)));
uint32x4_t v_src1 = cv_vrndq_u32_f32(vld1q_f32(src + x));
uint32x4_t v_src2 = cv_vrndq_u32_f32(vld1q_f32(src + x + 4));
vst1q_u16(dst + x, vcombine_u16(vqmovn_u32(v_src1), vqmovn_u32(v_src2)));
}
return x;
@ -2073,7 +2073,7 @@ struct Cvt_SIMD<float, int>
int x = 0;
for ( ; x <= width - 4; x += 4)
vst1q_s32(dst + x, vcvtq_s32_f32(vld1q_f32(src + x)));
vst1q_s32(dst + x, cv_vrndq_s32_f32(vld1q_f32(src + x)));
return x;
}