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Hsv2rgb univ intrin (#11637)

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* add universal intrinsics for HSV2RGB_b

* rewritten HSV2RGB_b without using extra universal intrinsics

* removed unused variable

* undo changes in v_load_deinterleave
pull/11623/merge
Vadim Pisarevsky 7 years ago committed by GitHub
parent 0349e8c9af
commit d734e83af0
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1 changed files with 193 additions and 316 deletions
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  1. 509
      modules/imgproc/src/color_hsv.cpp

509
modules/imgproc/src/color_hsv.cpp
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@ -213,6 +213,91 @@ struct RGB2HSV_f
};
#if CV_SIMD128
inline void HSV2RGB_simd(v_float32x4& v_h, v_float32x4& v_s, v_float32x4& v_v, float hscale)
{
v_h = v_h * v_setall_f32(hscale);
v_float32x4 v_pre_sector = v_cvt_f32(v_trunc(v_h));
v_h = v_h - v_pre_sector;
v_float32x4 v_tab0 = v_v;
v_float32x4 v_one = v_setall_f32(1.0f);
v_float32x4 v_tab1 = v_v * (v_one - v_s);
v_float32x4 v_tab2 = v_v * (v_one - (v_s * v_h));
v_float32x4 v_tab3 = v_v * (v_one - (v_s * (v_one - v_h)));
v_float32x4 v_one_sixth = v_setall_f32(1.0f / 6.0f);
v_float32x4 v_sector = v_pre_sector * v_one_sixth;
v_sector = v_cvt_f32(v_trunc(v_sector));
v_float32x4 v_six = v_setall_f32(6.0f);
v_sector = v_pre_sector - (v_sector * v_six);
v_float32x4 v_two = v_setall_f32(2.0f);
v_h = v_tab1 & (v_sector < v_two);
v_h = v_h | (v_tab3 & (v_sector == v_two));
v_float32x4 v_three = v_setall_f32(3.0f);
v_h = v_h | (v_tab0 & (v_sector == v_three));
v_float32x4 v_four = v_setall_f32(4.0f);
v_h = v_h | (v_tab0 & (v_sector == v_four));
v_h = v_h | (v_tab2 & (v_sector > v_four));
v_s = v_tab3 & (v_sector < v_one);
v_s = v_s | (v_tab0 & (v_sector == v_one));
v_s = v_s | (v_tab0 & (v_sector == v_two));
v_s = v_s | (v_tab2 & (v_sector == v_three));
v_s = v_s | (v_tab1 & (v_sector > v_three));
v_v = v_tab0 & (v_sector < v_one);
v_v = v_v | (v_tab2 & (v_sector == v_one));
v_v = v_v | (v_tab1 & (v_sector == v_two));
v_v = v_v | (v_tab1 & (v_sector == v_three));
v_v = v_v | (v_tab3 & (v_sector == v_four));
v_v = v_v | (v_tab0 & (v_sector > v_four));
}
#endif
inline void HSV2RGB_native(const float* src, float* dst, const float hscale, const int bidx)
{
float h = src[0], s = src[1], v = src[2];
float b, g, r;
if( s == 0 )
b = g = r = v;
else
{
static const int sector_data[][3]=
{{1,3,0}, {1,0,2}, {3,0,1}, {0,2,1}, {0,1,3}, {2,1,0}};
float tab[4];
int sector;
h *= hscale;
if( h < 0 )
do h += 6; while( h < 0 );
else if( h >= 6 )
do h -= 6; while( h >= 6 );
sector = cvFloor(h);
h -= sector;
if( (unsigned)sector >= 6u )
{
sector = 0;
h = 0.f;
}
tab[0] = v;
tab[1] = v*(1.f - s);
tab[2] = v*(1.f - s*h);
tab[3] = v*(1.f - s*(1.f - h));
b = tab[sector_data[sector][0]];
g = tab[sector_data[sector][1]];
r = tab[sector_data[sector][2]];
}
dst[bidx] = b;
dst[1] = g;
dst[bidx^2] = r;
}
struct HSV2RGB_f
{
typedef float channel_type;
@ -224,152 +309,49 @@ struct HSV2RGB_f
#endif
}
#if CV_SIMD128
inline void process(v_float32x4& v_h, v_float32x4& v_s,
v_float32x4& v_v, v_float32x4& v_scale) const
{
v_h = v_h * v_scale;
v_float32x4 v_pre_sector = v_cvt_f32(v_trunc(v_h));
v_h = v_h - v_pre_sector;
v_float32x4 v_tab0 = v_v;
v_float32x4 v_one = v_setall_f32(1.0f);
v_float32x4 v_tab1 = v_v * (v_one - v_s);
v_float32x4 v_tab2 = v_v * (v_one - (v_s * v_h));
v_float32x4 v_tab3 = v_v * (v_one - (v_s * (v_one - v_h)));
v_float32x4 v_one_sixth = v_setall_f32(1.0f / 6.0f);
v_float32x4 v_sector = v_pre_sector * v_one_sixth;
v_sector = v_cvt_f32(v_trunc(v_sector));
v_float32x4 v_six = v_setall_f32(6.0f);
v_sector = v_pre_sector - (v_sector * v_six);
v_float32x4 v_two = v_setall_f32(2.0f);
v_h = v_tab1 & (v_sector < v_two);
v_h = v_h | (v_tab3 & (v_sector == v_two));
v_float32x4 v_three = v_setall_f32(3.0f);
v_h = v_h | (v_tab0 & (v_sector == v_three));
v_float32x4 v_four = v_setall_f32(4.0f);
v_h = v_h | (v_tab0 & (v_sector == v_four));
v_h = v_h | (v_tab2 & (v_sector > v_four));
v_s = v_tab3 & (v_sector < v_one);
v_s = v_s | (v_tab0 & (v_sector == v_one));
v_s = v_s | (v_tab0 & (v_sector == v_two));
v_s = v_s | (v_tab2 & (v_sector == v_three));
v_s = v_s | (v_tab1 & (v_sector > v_three));
v_v = v_tab0 & (v_sector < v_one);
v_v = v_v | (v_tab2 & (v_sector == v_one));
v_v = v_v | (v_tab1 & (v_sector == v_two));
v_v = v_v | (v_tab1 & (v_sector == v_three));
v_v = v_v | (v_tab3 & (v_sector == v_four));
v_v = v_v | (v_tab0 & (v_sector > v_four));
}
#endif
void operator()(const float* src, float* dst, int n) const
{
int i = 0, bidx = blueIdx, dcn = dstcn;
float alpha = ColorChannel<float>::max();
n *= 3;
#if CV_SIMD128
if (hasSIMD)
if (dcn == 3)
{
v_float32x4 v_scale = v_setall_f32(hscale);
if (dcn == 3)
#if CV_SIMD128
if (hasSIMD)
{
if (bidx)
{
for (; i <= n - 12; i += 12, dst += dcn * 4)
{
v_float32x4 v_h;
v_float32x4 v_s;
v_float32x4 v_v;
v_load_deinterleave(src + i, v_h, v_s, v_v);
process(v_h, v_s, v_v, v_scale);
v_store_interleave(dst, v_v, v_s, v_h);
}
} else {
for (; i <= n - 12; i += 12, dst += dcn * 4)
{
v_float32x4 v_h;
v_float32x4 v_s;
v_float32x4 v_v;
v_load_deinterleave(src + i, v_h, v_s, v_v);
process(v_h, v_s, v_v, v_scale);
v_store_interleave(dst, v_h, v_s, v_v);
}
}
} else { // dcn == 4
v_float32x4 v_a = v_setall_f32(alpha);
if (bidx)
for (; i <= n - 12; i += 12, dst += dcn * 4)
{
for (; i <= n - 12; i += 12, dst += dcn * 4)
{
v_float32x4 v_h;
v_float32x4 v_s;
v_float32x4 v_v;
v_load_deinterleave(src + i, v_h, v_s, v_v);
process(v_h, v_s, v_v, v_scale);
v_store_interleave(dst, v_v, v_s, v_h, v_a);
}
} else {
for (; i <= n - 12; i += 12, dst += dcn * 4)
{
v_float32x4 v_h;
v_float32x4 v_s;
v_float32x4 v_v;
v_load_deinterleave(src + i, v_h, v_s, v_v);
process(v_h, v_s, v_v, v_scale);
v_store_interleave(dst, v_h, v_s, v_v, v_a);
}
v_float32x4 v_src[3];
v_load_deinterleave(src + i, v_src[0], v_src[1], v_src[2]);
HSV2RGB_simd(v_src[0], v_src[1], v_src[2], hscale);
v_store_interleave(dst, v_src[bidx], v_src[1], v_src[bidx^2]);
}
}
}
#endif
for( ; i < n; i += 3, dst += dcn )
{
float h = src[i], s = src[i+1], v = src[i+2];
float b, g, r;
if( s == 0 )
b = g = r = v;
else
#endif
for( ; i < n; i += 3, dst += dcn )
{
static const int sector_data[][3]=
{{1,3,0}, {1,0,2}, {3,0,1}, {0,2,1}, {0,1,3}, {2,1,0}};
float tab[4];
int sector;
h *= hscale;
if( h < 0 )
do h += 6; while( h < 0 );
else if( h >= 6 )
do h -= 6; while( h >= 6 );
sector = cvFloor(h);
h -= sector;
if( (unsigned)sector >= 6u )
HSV2RGB_native(src + i, dst, hscale, bidx);
}
} else { // dcn == 4
float alpha = ColorChannel<float>::max();
#if CV_SIMD128
if (hasSIMD)
{
for (; i <= n - 12; i += 12, dst += dcn * 4)
{
sector = 0;
h = 0.f;
v_float32x4 v_src[3];
v_load_deinterleave(src + i, v_src[0], v_src[1], v_src[2]);
HSV2RGB_simd(v_src[0], v_src[1], v_src[2], hscale);
v_float32x4 v_a = v_setall_f32(alpha);
v_store_interleave(dst, v_src[bidx], v_src[1], v_src[bidx^2], v_a);
}
tab[0] = v;
tab[1] = v*(1.f - s);
tab[2] = v*(1.f - s*h);
tab[3] = v*(1.f - s*(1.f - h));
b = tab[sector_data[sector][0]];
g = tab[sector_data[sector][1]];
r = tab[sector_data[sector][2]];
}
dst[bidx] = b;
dst[1] = g;
dst[bidx^2] = r;
if( dcn == 4 )
#endif
for( ; i < n; i += 3, dst += dcn )
{
HSV2RGB_native(src + i, dst, hscale, bidx);
dst[3] = alpha;
}
}
}
@ -386,216 +368,111 @@ struct HSV2RGB_b
typedef uchar channel_type;
HSV2RGB_b(int _dstcn, int _blueIdx, int _hrange)
: dstcn(_dstcn), cvt(3, _blueIdx, (float)_hrange)
: dstcn(_dstcn), blueIdx(_blueIdx), hscale(6.0f / _hrange)
{
#if CV_NEON
v_scale_inv = vdupq_n_f32(1.f/255.f);
v_scale = vdupq_n_f32(255.f);
v_alpha = vdup_n_u8(ColorChannel<uchar>::max());
#elif CV_SSE2
v_scale = _mm_set1_ps(255.0f);
v_alpha = _mm_set1_ps(ColorChannel<uchar>::max());
v_zero = _mm_setzero_si128();
haveSIMD = checkHardwareSupport(CV_CPU_SSE2);
#if CV_SIMD128
hasSIMD = hasSIMD128();
#endif
}
#if CV_SSE2
void process(__m128i v_r, __m128i v_g, __m128i v_b,
const __m128& v_coeffs_,
float * buf) const
{
__m128 v_r0 = _mm_cvtepi32_ps(_mm_unpacklo_epi16(v_r, v_zero));
__m128 v_g0 = _mm_cvtepi32_ps(_mm_unpacklo_epi16(v_g, v_zero));
__m128 v_b0 = _mm_cvtepi32_ps(_mm_unpacklo_epi16(v_b, v_zero));
__m128 v_r1 = _mm_cvtepi32_ps(_mm_unpackhi_epi16(v_r, v_zero));
__m128 v_g1 = _mm_cvtepi32_ps(_mm_unpackhi_epi16(v_g, v_zero));
__m128 v_b1 = _mm_cvtepi32_ps(_mm_unpackhi_epi16(v_b, v_zero));
__m128 v_coeffs = v_coeffs_;
v_r0 = _mm_mul_ps(v_r0, v_coeffs);
v_g1 = _mm_mul_ps(v_g1, v_coeffs);
v_coeffs = _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(v_coeffs), 0x49));
v_r1 = _mm_mul_ps(v_r1, v_coeffs);
v_b0 = _mm_mul_ps(v_b0, v_coeffs);
v_coeffs = _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(v_coeffs), 0x49));
v_g0 = _mm_mul_ps(v_g0, v_coeffs);
v_b1 = _mm_mul_ps(v_b1, v_coeffs);
_mm_store_ps(buf, v_r0);
_mm_store_ps(buf + 4, v_r1);
_mm_store_ps(buf + 8, v_g0);
_mm_store_ps(buf + 12, v_g1);
_mm_store_ps(buf + 16, v_b0);
_mm_store_ps(buf + 20, v_b1);
}
#endif
void operator()(const uchar* src, uchar* dst, int n) const
{
int i, j, dcn = dstcn;
int j = 0, dcn = dstcn;
uchar alpha = ColorChannel<uchar>::max();
float CV_DECL_ALIGNED(16) buf[3*BLOCK_SIZE];
#if CV_SSE2
__m128 v_coeffs = _mm_set_ps(1.f, 1.f/255.f, 1.f/255.f, 1.f);
#endif
for( i = 0; i < n; i += BLOCK_SIZE, src += BLOCK_SIZE*3 )
#if CV_SIMD128
if (hasSIMD)
{
int dn = std::min(n - i, (int)BLOCK_SIZE);
j = 0;
#if CV_NEON
for ( ; j <= (dn - 8) * 3; j += 24)
{
uint8x8x3_t v_src = vld3_u8(src + j);
uint16x8_t v_t0 = vmovl_u8(v_src.val[0]),
v_t1 = vmovl_u8(v_src.val[1]),
v_t2 = vmovl_u8(v_src.val[2]);
float32x4x3_t v_dst;
v_dst.val[0] = vcvtq_f32_u32(vmovl_u16(vget_low_u16(v_t0)));
v_dst.val[1] = vmulq_f32(vcvtq_f32_u32(vmovl_u16(vget_low_u16(v_t1))), v_scale_inv);
v_dst.val[2] = vmulq_f32(vcvtq_f32_u32(vmovl_u16(vget_low_u16(v_t2))), v_scale_inv);
vst3q_f32(buf + j, v_dst);
v_dst.val[0] = vcvtq_f32_u32(vmovl_u16(vget_high_u16(v_t0)));
v_dst.val[1] = vmulq_f32(vcvtq_f32_u32(vmovl_u16(vget_high_u16(v_t1))), v_scale_inv);
v_dst.val[2] = vmulq_f32(vcvtq_f32_u32(vmovl_u16(vget_high_u16(v_t2))), v_scale_inv);
vst3q_f32(buf + j + 12, v_dst);
}
#elif CV_SSE2
if (haveSIMD)
for (j = 0; j <= (n - 16) * 3; j += 48, dst += dcn * 16)
{
for ( ; j <= (dn - 8) * 3; j += 24)
v_uint8x16 h_b, s_b, v_b;
v_uint16x8 h_w[2], s_w[2], v_w[2];
v_uint32x4 h_u[4], s_u[4], v_u[4];
v_load_deinterleave(src + j, h_b, s_b, v_b);
v_expand(h_b, h_w[0], h_w[1]);
v_expand(s_b, s_w[0], s_w[1]);
v_expand(v_b, v_w[0], v_w[1]);
v_expand(h_w[0], h_u[0], h_u[1]);
v_expand(h_w[1], h_u[2], h_u[3]);
v_expand(s_w[0], s_u[0], s_u[1]);
v_expand(s_w[1], s_u[2], s_u[3]);
v_expand(v_w[0], v_u[0], v_u[1]);
v_expand(v_w[1], v_u[2], v_u[3]);
v_int32x4 b_i[4], g_i[4], r_i[4];
v_float32x4 v_coeff0 = v_setall_f32(1.0f / 255.0f);
v_float32x4 v_coeff1 = v_setall_f32(255.0f);
for( int k = 0; k < 4; k++ )
{
__m128i v_src0 = _mm_loadu_si128((__m128i const *)(src + j));
__m128i v_src1 = _mm_loadl_epi64((__m128i const *)(src + j + 16));
process(_mm_unpacklo_epi8(v_src0, v_zero),
_mm_unpackhi_epi8(v_src0, v_zero),
_mm_unpacklo_epi8(v_src1, v_zero),
v_coeffs,
buf + j);
v_float32x4 v_src[3];
v_src[0] = v_cvt_f32(v_reinterpret_as_s32(h_u[k]));
v_src[1] = v_cvt_f32(v_reinterpret_as_s32(s_u[k]));
v_src[2] = v_cvt_f32(v_reinterpret_as_s32(v_u[k]));
v_src[1] *= v_coeff0;
v_src[2] *= v_coeff0;
HSV2RGB_simd(v_src[0], v_src[1], v_src[2], hscale);
v_src[0] *= v_coeff1;
v_src[1] *= v_coeff1;
v_src[2] *= v_coeff1;
b_i[k] = v_trunc(v_src[0]);
g_i[k] = v_trunc(v_src[1]);
r_i[k] = v_trunc(v_src[2]);
}
}
#endif
for( ; j < dn*3; j += 3 )
{
buf[j] = src[j];
buf[j+1] = src[j+1]*(1.f/255.f);
buf[j+2] = src[j+2]*(1.f/255.f);
}
cvt(buf, buf, dn);
v_uint16x8 r_w[2], g_w[2], b_w[2];
v_uint8x16 r_b, g_b, b_b;
j = 0;
#if CV_NEON
for ( ; j <= (dn - 8) * 3; j += 24, dst += dcn * 8)
{
float32x4x3_t v_src0 = vld3q_f32(buf + j), v_src1 = vld3q_f32(buf + j + 12);
uint8x8_t v_dst0 = vqmovn_u16(vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(vmulq_f32(v_src0.val[0], v_scale))),
vqmovn_u32(cv_vrndq_u32_f32(vmulq_f32(v_src1.val[0], v_scale)))));
uint8x8_t v_dst1 = vqmovn_u16(vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(vmulq_f32(v_src0.val[1], v_scale))),
vqmovn_u32(cv_vrndq_u32_f32(vmulq_f32(v_src1.val[1], v_scale)))));
uint8x8_t v_dst2 = vqmovn_u16(vcombine_u16(vqmovn_u32(cv_vrndq_u32_f32(vmulq_f32(v_src0.val[2], v_scale))),
vqmovn_u32(cv_vrndq_u32_f32(vmulq_f32(v_src1.val[2], v_scale)))));
r_w[0] = v_pack_u(r_i[0], r_i[1]);
r_w[1] = v_pack_u(r_i[2], r_i[3]);
r_b = v_pack(r_w[0], r_w[1]);
g_w[0] = v_pack_u(g_i[0], g_i[1]);
g_w[1] = v_pack_u(g_i[2], g_i[3]);
g_b = v_pack(g_w[0], g_w[1]);
b_w[0] = v_pack_u(b_i[0], b_i[1]);
b_w[1] = v_pack_u(b_i[2], b_i[3]);
b_b = v_pack(b_w[0], b_w[1]);
if (dcn == 4)
if( dcn == 3 )
{
uint8x8x4_t v_dst;
v_dst.val[0] = v_dst0;
v_dst.val[1] = v_dst1;
v_dst.val[2] = v_dst2;
v_dst.val[3] = v_alpha;
vst4_u8(dst, v_dst);
if( blueIdx == 0 )
v_store_interleave(dst, b_b, g_b, r_b);
else
v_store_interleave(dst, r_b, g_b, b_b);
}
else
{
uint8x8x3_t v_dst;
v_dst.val[0] = v_dst0;
v_dst.val[1] = v_dst1;
v_dst.val[2] = v_dst2;
vst3_u8(dst, v_dst);
v_uint8x16 alpha_b = v_setall_u8(alpha);
if( blueIdx == 0 )
v_store_interleave(dst, b_b, g_b, r_b, alpha_b);
else
v_store_interleave(dst, r_b, g_b, b_b, alpha_b);
}
}
#elif CV_SSE2
if (dcn == 3 && haveSIMD)
{
for ( ; j <= (dn * 3 - 16); j += 16, dst += 16)
{
__m128 v_src0 = _mm_mul_ps(_mm_load_ps(buf + j), v_scale);
__m128 v_src1 = _mm_mul_ps(_mm_load_ps(buf + j + 4), v_scale);
__m128 v_src2 = _mm_mul_ps(_mm_load_ps(buf + j + 8), v_scale);
__m128 v_src3 = _mm_mul_ps(_mm_load_ps(buf + j + 12), v_scale);
__m128i v_dst0 = _mm_packs_epi32(_mm_cvtps_epi32(v_src0),
_mm_cvtps_epi32(v_src1));
__m128i v_dst1 = _mm_packs_epi32(_mm_cvtps_epi32(v_src2),
_mm_cvtps_epi32(v_src3));
_mm_storeu_si128((__m128i *)dst, _mm_packus_epi16(v_dst0, v_dst1));
}
int jr = j % 3;
if (jr)
dst -= jr, j -= jr;
}
else if (dcn == 4 && haveSIMD)
{
for ( ; j <= (dn * 3 - 12); j += 12, dst += 16)
{
__m128 v_buf0 = _mm_mul_ps(_mm_load_ps(buf + j), v_scale);
__m128 v_buf1 = _mm_mul_ps(_mm_load_ps(buf + j + 4), v_scale);
__m128 v_buf2 = _mm_mul_ps(_mm_load_ps(buf + j + 8), v_scale);
__m128 v_ba0 = _mm_unpackhi_ps(v_buf0, v_alpha);
__m128 v_ba1 = _mm_unpacklo_ps(v_buf2, v_alpha);
__m128i v_src0 = _mm_cvtps_epi32(_mm_shuffle_ps(v_buf0, v_ba0, 0x44));
__m128i v_src1 = _mm_shuffle_epi32(_mm_cvtps_epi32(_mm_shuffle_ps(v_ba0, v_buf1, 0x4e)), 0x78);
__m128i v_src2 = _mm_cvtps_epi32(_mm_shuffle_ps(v_buf1, v_ba1, 0x4e));
__m128i v_src3 = _mm_shuffle_epi32(_mm_cvtps_epi32(_mm_shuffle_ps(v_ba1, v_buf2, 0xee)), 0x78);
__m128i v_dst0 = _mm_packs_epi32(v_src0, v_src1);
__m128i v_dst1 = _mm_packs_epi32(v_src2, v_src3);
_mm_storeu_si128((__m128i *)dst, _mm_packus_epi16(v_dst0, v_dst1));
}
int jr = j % 3;
if (jr)
dst -= jr, j -= jr;
}
#endif
for( ; j < dn*3; j += 3, dst += dcn )
{
dst[0] = saturate_cast<uchar>(buf[j]*255.f);
dst[1] = saturate_cast<uchar>(buf[j+1]*255.f);
dst[2] = saturate_cast<uchar>(buf[j+2]*255.f);
if( dcn == 4 )
dst[3] = alpha;
}
}
#endif
for( ; j < n * 3; j += 3, dst += dcn )
{
float buf[6];
buf[0] = src[j];
buf[1] = src[j+1] * (1.0f / 255.0f);
buf[2] = src[j+2] * (1.0f / 255.0f);
HSV2RGB_native(buf, buf + 3, hscale, blueIdx);
dst[0] = saturate_cast<uchar>(buf[3] * 255.0f);
dst[1] = saturate_cast<uchar>(buf[4] * 255.0f);
dst[2] = saturate_cast<uchar>(buf[5] * 255.0f);
if( dcn == 4 )
dst[3] = alpha;
}
}
int dstcn;
HSV2RGB_f cvt;
#if CV_NEON
float32x4_t v_scale, v_scale_inv;
uint8x8_t v_alpha;
#elif CV_SSE2
__m128 v_scale;
__m128 v_alpha;
__m128i v_zero;
bool haveSIMD;
int blueIdx;
float hscale;
#if CV_SIMD128
bool hasSIMD;
#endif
};

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