/*!
* \brief Multiply the two given vectors of byte
*/
ETL_STATIC_INLINE(avx_simd_byte) mul(avx_simd_byte lhs, avx_simd_byte rhs) {
auto aodd = _mm256_srli_epi16(lhs.value, 8);
auto bodd = _mm256_srli_epi16(rhs.value, 8);
auto muleven = _mm256_mullo_epi16(lhs.value, rhs.value);
auto mulodd = _mm256_slli_epi16(_mm256_mullo_epi16(aodd, bodd), 8);
return _mm256_blendv_epi8(mulodd, muleven, _mm256_set1_epi32(0x00FF00FF));
}
static INLINE __m256i calc_mask_d16_avx2(const __m256i *data_src0,
const __m256i *data_src1,
const __m256i *round_const,
const __m256i *mask_base_16,
const __m256i *clip_diff, int round) {
const __m256i diffa = _mm256_subs_epu16(*data_src0, *data_src1);
const __m256i diffb = _mm256_subs_epu16(*data_src1, *data_src0);
const __m256i diff = _mm256_max_epu16(diffa, diffb);
const __m256i diff_round =
_mm256_srli_epi16(_mm256_adds_epu16(diff, *round_const), round);
const __m256i diff_factor = _mm256_srli_epi16(diff_round, DIFF_FACTOR_LOG2);
const __m256i diff_mask = _mm256_adds_epi16(diff_factor, *mask_base_16);
const __m256i diff_clamp = _mm256_min_epi16(diff_mask, *clip_diff);
return diff_clamp;
}
static INLINE __m256i calc_mask_avx2(const __m256i mask_base, const __m256i s0,
const __m256i s1) {
const __m256i diff = _mm256_abs_epi16(_mm256_sub_epi16(s0, s1));
return _mm256_abs_epi16(
_mm256_add_epi16(mask_base, _mm256_srli_epi16(diff, 4)));
// clamp(diff, 0, 64) can be skiped for diff is always in the range ( 38, 54)
}
void
maddrc16_imul_avx2(uint8_t* region1, const uint8_t* region2,
uint8_t constant, size_t length)
{
uint8_t *end;
register __m256i reg1, reg2, ri[4], sp[4], mi[4];
const uint8_t *p = pt[constant];
if (constant == 0)
return;
if (constant == 1) {
xorr_avx2(region1, region2, length);
return;
}
mi[0] = _mm256_set1_epi8(0x11);
mi[1] = _mm256_set1_epi8(0x22);
mi[2] = _mm256_set1_epi8(0x44);
mi[3] = _mm256_set1_epi8(0x88);
sp[0] = _mm256_set1_epi16(p[0]);
sp[1] = _mm256_set1_epi16(p[1]);
sp[2] = _mm256_set1_epi16(p[2]);
sp[3] = _mm256_set1_epi16(p[3]);
for (end=region1+length; region1<end; region1+=32, region2+=32) {
reg2 = _mm256_load_si256((void *)region2);
reg1 = _mm256_load_si256((void *)region1);
ri[0] = _mm256_and_si256(reg2, mi[0]);
ri[1] = _mm256_and_si256(reg2, mi[1]);
ri[2] = _mm256_and_si256(reg2, mi[2]);
ri[3] = _mm256_and_si256(reg2, mi[3]);
ri[1] = _mm256_srli_epi16(ri[1], 1);
ri[2] = _mm256_srli_epi16(ri[2], 2);
ri[3] = _mm256_srli_epi16(ri[3], 3);
ri[0] = _mm256_mullo_epi16(ri[0], sp[0]);
ri[1] = _mm256_mullo_epi16(ri[1], sp[1]);
ri[2] = _mm256_mullo_epi16(ri[2], sp[2]);
ri[3] = _mm256_mullo_epi16(ri[3], sp[3]);
ri[0] = _mm256_xor_si256(ri[0], ri[1]);
ri[2] = _mm256_xor_si256(ri[2], ri[3]);
ri[0] = _mm256_xor_si256(ri[0], ri[2]);
ri[0] = _mm256_xor_si256(ri[0], reg1);
_mm256_store_si256((void *)region1, ri[0]);
}
}
// 32bpp optimized for 8-bit ARGB/RGBA. rmask should be 0x00FF,0x00FF,... etc
static inline __m256i stretchblt_line_bilinear_pixel_blend_avx_argb8(const __m256i cur,const __m256i nxt,const __m256i mul,const __m256i rmask) {
__m256i rc,gc;
__m256i rn,gn;
__m256i d,sum;
rc = _mm256_and_si256( cur ,rmask);
gc = _mm256_and_si256(_mm256_srli_epi16(cur,8),rmask);
rn = _mm256_and_si256( nxt ,rmask);
gn = _mm256_and_si256(_mm256_srli_epi16(nxt,8),rmask);
d = _mm256_sub_epi16(rn,rc);
sum = _mm256_add_epi16(rc,_mm256_mulhi_epi16(_mm256_add_epi16(d,d),mul));
d = _mm256_sub_epi16(gn,gc);
sum = _mm256_add_epi16(_mm256_slli_epi16(_mm256_add_epi16(gc,_mm256_mulhi_epi16(_mm256_add_epi16(d,d),mul)),8),sum);
return sum;
}
static __m256i avx2_popcount(const __m256i vec) {
const __m256i lookup = _mm256_setr_epi8(
/* 0 */ 0, /* 1 */ 1, /* 2 */ 1, /* 3 */ 2,
/* 4 */ 1, /* 5 */ 2, /* 6 */ 2, /* 7 */ 3,
/* 8 */ 1, /* 9 */ 2, /* a */ 2, /* b */ 3,
/* c */ 2, /* d */ 3, /* e */ 3, /* f */ 4,
/* 0 */ 0, /* 1 */ 1, /* 2 */ 1, /* 3 */ 2,
/* 4 */ 1, /* 5 */ 2, /* 6 */ 2, /* 7 */ 3,
/* 8 */ 1, /* 9 */ 2, /* a */ 2, /* b */ 3,
/* c */ 2, /* d */ 3, /* e */ 3, /* f */ 4
);
const __m256i low_mask = _mm256_set1_epi8(0x0f);
const __m256i lo = _mm256_and_si256(vec, low_mask);
const __m256i hi = _mm256_and_si256(_mm256_srli_epi16(vec, 4), low_mask);
const __m256i popcnt1 = _mm256_shuffle_epi8(lookup, lo);
const __m256i popcnt2 = _mm256_shuffle_epi8(lookup, hi);
return _mm256_add_epi8(popcnt1, popcnt2);
}
// 16bpp general R/G/B, usually 5/6/5 or 5/5/5
static inline __m256i stretchblt_line_bilinear_pixel_blend_avx_rgb16(const __m256i cur,const __m256i nxt,const __m256i mul,const __m256i rmask,const uint16_t rshift,const __m256i gmask,const uint16_t gshift,const __m256i bmask,const uint16_t bshift) {
__m256i rc,gc,bc;
__m256i rn,gn,bn;
__m256i d,sum;
rc = _mm256_and_si256(_mm256_srli_epi16(cur,rshift),rmask);
gc = _mm256_and_si256(_mm256_srli_epi16(cur,gshift),gmask);
bc = _mm256_and_si256(_mm256_srli_epi16(cur,bshift),bmask);
rn = _mm256_and_si256(_mm256_srli_epi16(nxt,rshift),rmask);
gn = _mm256_and_si256(_mm256_srli_epi16(nxt,gshift),gmask);
bn = _mm256_and_si256(_mm256_srli_epi16(nxt,bshift),bmask);
d = _mm256_sub_epi16(rn,rc);
sum = _mm256_slli_epi16(_mm256_add_epi16(rc,_mm256_mulhi_epi16(_mm256_add_epi16(d,d),mul)),rshift);
d = _mm256_sub_epi16(gn,gc);
sum = _mm256_add_epi16(_mm256_slli_epi16(_mm256_add_epi16(gc,_mm256_mulhi_epi16(_mm256_add_epi16(d,d),mul)),gshift),sum);
d = _mm256_sub_epi16(bn,bc);
sum = _mm256_add_epi16(_mm256_slli_epi16(_mm256_add_epi16(bc,_mm256_mulhi_epi16(_mm256_add_epi16(d,d),mul)),bshift),sum);
return sum;
}
void extern
avx2_test (void)
{
x = _mm256_srli_epi16 (x, 13);
}
SIMD_INLINE __m256i Average16(const __m256i & s0, const __m256i & s1)
{
return _mm256_srli_epi16(_mm256_add_epi16(_mm256_add_epi16(_mm256_maddubs_epi16(s0, K8_01), _mm256_maddubs_epi16(s1, K8_01)), K16_0002), 2);
}
SIMD_INLINE __m256i Average16(const __m256i & s0, const __m256i & s1)
{
return _mm256_srli_epi16(_mm256_add_epi16(_mm256_add_epi16(
_mm256_hadd_epi16(_mm256_unpacklo_epi8(s0, K_ZERO), _mm256_unpackhi_epi8(s0, K_ZERO)),
_mm256_hadd_epi16(_mm256_unpacklo_epi8(s1, K_ZERO), _mm256_unpackhi_epi8(s1, K_ZERO))), K16_0002), 2);
}
template <> SIMD_INLINE __m256i DivideBy256<true>(__m256i value)
{
return _mm256_srli_epi16(_mm256_add_epi16(value, K16_0080), 8);
}
static int make_frame_planar_yuv_stacked
(
lw_video_output_handler_t *vohp,
int height,
AVFrame *av_frame,
PVideoFrame &as_frame
)
{
as_picture_t dst_picture = { { { NULL } } };
as_picture_t src_picture = { { { NULL } } };
as_assign_planar_yuv( as_frame, &dst_picture );
lw_video_scaler_handler_t *vshp = &vohp->scaler;
as_video_output_handler_t *as_vohp = (as_video_output_handler_t *)vohp->private_handler;
if( vshp->input_pixel_format == vshp->output_pixel_format )
for( int i = 0; i < 3; i++ )
{
src_picture.data [i] = av_frame->data [i];
src_picture.linesize[i] = av_frame->linesize[i];
}
else
{
if( convert_av_pixel_format( vshp->sws_ctx, height, av_frame, &as_vohp->scaled ) < 0 )
return -1;
src_picture = as_vohp->scaled;
}
for( int i = 0; i < 3; i++ )
{
const int src_height = height >> (i ? as_vohp->sub_height : 0);
const int width = vshp->input_width >> (i ? as_vohp->sub_width : 0);
const int width16 = sse2_available > 0 ? (width & ~15) : 0;
const int width32 = avx2_available > 0 ? (width & ~31) : 0;
const int lsb_offset = src_height * dst_picture.linesize[i];
for( int j = 0; j < src_height; j++ )
{
/* Here, if available, use SIMD instructions.
* Note: There is assumption that the address of a given data can be divided by 32 or 16.
* The destination is always 32 byte alignment unless AviSynth legacy alignment is used.
* The source is not always 32 or 16 byte alignment if the frame buffer is from libavcodec directly. */
static const uint8_t LW_ALIGN(32) sp16[32] =
{
/* saturation protector
* For setting all upper 8 bits to zero so that saturation won't make sense. */
0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00 ,0xFF, 0x00, 0xFF, 0x00,
0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00 ,0xFF, 0x00, 0xFF, 0x00
};
uint8_t *dst = dst_picture.data[i] + j * dst_picture.linesize[i]; /* MSB: dst + k, LSB: dst + k + lsb_offset */
const uint8_t *src = src_picture.data[i] + j * src_picture.linesize[i]; /* MSB: src + 2 * k + 1, LSB: src + 2 * k */
const int _width16 = ((intptr_t)src & 15) == 0 ? width16 : 0; /* Don't use SSE2 instructions if set to 0. */
const int _width32 = ((intptr_t)src & 31) == 0 ? width32 : 0; /* Don't use AVX(2) instructions if set to 0. */
#if VC_HAS_AVX2
/* AVX, AVX2 */
for( int k = 0; k < _width32; k += 32 )
{
__m256i ymm0 = _mm256_load_si256( (__m256i *)(src + 2 * k ) );
__m256i ymm1 = _mm256_load_si256( (__m256i *)(src + 2 * k + 32) );
__m256i mask = _mm256_load_si256( (__m256i *)sp16 );
__m256i ymm2 = _mm256_packus_epi16( _mm256_and_si256 ( ymm0, mask ), _mm256_and_si256 ( ymm1, mask ) );
__m256i ymm3 = _mm256_packus_epi16( _mm256_srli_epi16( ymm0, 8 ), _mm256_srli_epi16( ymm1, 8 ) );
_mm256_store_si256( (__m256i *)(dst + k + lsb_offset), _mm256_permute4x64_epi64( ymm2, _MM_SHUFFLE( 3, 1, 2, 0 ) ) );
_mm256_store_si256( (__m256i *)(dst + k ), _mm256_permute4x64_epi64( ymm3, _MM_SHUFFLE( 3, 1, 2, 0 ) ) );
}
#endif
/* SSE2 */
for( int k = _width32; k < _width16; k += 16 )
{
__m128i xmm0 = _mm_load_si128( (__m128i *)(src + 2 * k ) );
__m128i xmm1 = _mm_load_si128( (__m128i *)(src + 2 * k + 16) );
__m128i mask = _mm_load_si128( (__m128i *)sp16 );
_mm_store_si128( (__m128i *)(dst + k + lsb_offset), _mm_packus_epi16( _mm_and_si128 ( xmm0, mask ), _mm_and_si128 ( xmm1, mask ) ) );
_mm_store_si128( (__m128i *)(dst + k ), _mm_packus_epi16( _mm_srli_epi16( xmm0, 8 ), _mm_srli_epi16( xmm1, 8 ) ) );
}
for( int k = _width16; k < width; k++ )
{
*(dst + k + lsb_offset) = *(src + 2 * k );
*(dst + k ) = *(src + 2 * k + 1);
}
}
}
return 0;
}
void vec_i8_cnt_dosage2(const int8_t *p, int8_t *out, size_t n, int8_t val,
int8_t missing, int8_t missing_substitute)
{
#ifdef COREARRAY_SIMD_SSE2
// header 1, 16-byte aligned
size_t h = (16 - ((size_t)out & 0x0F)) & 0x0F;
for (; (n > 0) && (h > 0); n--, h--, p+=2)
{
*out ++ = ((p[0] == missing) || (p[1] == missing)) ?
missing_substitute :
(p[0]==val ? 1 : 0) + (p[1]==val ? 1 : 0);
}
// body, SSE2
const __m128i val16 = _mm_set1_epi8(val);
const __m128i miss16 = _mm_set1_epi8(missing);
const __m128i sub16 = _mm_set1_epi8(missing_substitute);
const __m128i mask = _mm_set1_epi16(0x00FF);
# ifdef COREARRAY_SIMD_AVX2
// header 2, 32-byte aligned
if ((n >= 16) && ((size_t)out & 0x10))
{
__m128i w1 = MM_LOADU_128((__m128i const*)p); p += 16;
__m128i w2 = MM_LOADU_128((__m128i const*)p); p += 16;
__m128i v1 = _mm_packus_epi16(_mm_and_si128(w1, mask), _mm_and_si128(w2, mask));
__m128i v2 = _mm_packus_epi16(_mm_srli_epi16(w1, 8), _mm_srli_epi16(w2, 8));
__m128i c = _mm_setzero_si128();
c = _mm_sub_epi8(c, _mm_cmpeq_epi8(v1, val16));
c = _mm_sub_epi8(c, _mm_cmpeq_epi8(v2, val16));
w1 = _mm_cmpeq_epi8(v1, miss16);
w2 = _mm_cmpeq_epi8(v2, miss16);
__m128i w = _mm_or_si128(w1, w2);
c = _mm_or_si128(_mm_and_si128(w, sub16), _mm_andnot_si128(w, c));
_mm_store_si128((__m128i *)out, c);
n -= 16; out += 16;
}
const __m256i val32 = _mm256_set1_epi8(val);
const __m256i miss32 = _mm256_set1_epi8(missing);
const __m256i sub32 = _mm256_set1_epi8(missing_substitute);
const __m256i mask2 = _mm256_set1_epi16(0x00FF);
for (; n >= 32; n-=32)
{
__m256i w1 = MM_LOADU_256((__m256i const*)p); p += 32;
__m256i w2 = MM_LOADU_256((__m256i const*)p); p += 32;
__m256i v1 = _mm256_packus_epi16(_mm256_and_si256(w1, mask2), _mm256_and_si256(w2, mask2));
__m256i v2 = _mm256_packus_epi16(_mm256_srli_epi16(w1, 8), _mm256_srli_epi16(w2, 8));
__m256i c = _mm256_setzero_si256();
c = _mm256_sub_epi8(c, _mm256_cmpeq_epi8(v1, val32));
c = _mm256_sub_epi8(c, _mm256_cmpeq_epi8(v2, val32));
w1 = _mm256_cmpeq_epi8(v1, miss32);
w2 = _mm256_cmpeq_epi8(v2, miss32);
__m256i w = _mm256_or_si256(w1, w2);
c = _mm256_or_si256(_mm256_and_si256(w, sub32), _mm256_andnot_si256(w, c));
c = _mm256_permute4x64_epi64(c, 0xD8);
_mm256_store_si256((__m256i *)out, c);
out += 32;
}
# endif
// SSE2 only
for (; n >= 16; n-=16)
{
__m128i w1 = MM_LOADU_128((__m128i const*)p); p += 16;
__m128i w2 = MM_LOADU_128((__m128i const*)p); p += 16;
__m128i v1 = _mm_packus_epi16(_mm_and_si128(w1, mask), _mm_and_si128(w2, mask));
__m128i v2 = _mm_packus_epi16(_mm_srli_epi16(w1, 8), _mm_srli_epi16(w2, 8));
__m128i c = _mm_setzero_si128();
c = _mm_sub_epi8(c, _mm_cmpeq_epi8(v1, val16));
c = _mm_sub_epi8(c, _mm_cmpeq_epi8(v2, val16));
w1 = _mm_cmpeq_epi8(v1, miss16);
w2 = _mm_cmpeq_epi8(v2, miss16);
__m128i w = _mm_or_si128(w1, w2);
c = _mm_or_si128(_mm_and_si128(w, sub16), _mm_andnot_si128(w, c));
_mm_store_si128((__m128i *)out, c);
out += 16;
}
#endif
// tail
for (; n > 0; n--, p+=2)
{
*out ++ = ((p[0] == missing) || (p[1] == missing)) ?
missing_substitute :
(p[0]==val ? 1 : 0) + (p[1]==val ? 1 : 0);
}
}
static void mb_lpf_horizontal_edge_w_avx2_16(unsigned char *s, int p,
const unsigned char *_blimit,
const unsigned char *_limit,
const unsigned char *_thresh) {
__m128i mask, hev, flat, flat2;
const __m128i zero = _mm_set1_epi16(0);
const __m128i one = _mm_set1_epi8(1);
__m128i p7, p6, p5;
__m128i p4, p3, p2, p1, p0, q0, q1, q2, q3, q4;
__m128i q5, q6, q7;
__m256i p256_7, q256_7, p256_6, q256_6, p256_5, q256_5, p256_4, q256_4,
p256_3, q256_3, p256_2, q256_2, p256_1, q256_1, p256_0, q256_0;
const __m128i thresh =
_mm_broadcastb_epi8(_mm_cvtsi32_si128((int)_thresh[0]));
const __m128i limit = _mm_broadcastb_epi8(_mm_cvtsi32_si128((int)_limit[0]));
const __m128i blimit =
_mm_broadcastb_epi8(_mm_cvtsi32_si128((int)_blimit[0]));
p256_4 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s - 5 * p)));
p256_3 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s - 4 * p)));
p256_2 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s - 3 * p)));
p256_1 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s - 2 * p)));
p256_0 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s - 1 * p)));
q256_0 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s - 0 * p)));
q256_1 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s + 1 * p)));
q256_2 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s + 2 * p)));
q256_3 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s + 3 * p)));
q256_4 =
_mm256_castpd_si256(_mm256_broadcast_pd((__m128d const *)(s + 4 * p)));
p4 = _mm256_castsi256_si128(p256_4);
p3 = _mm256_castsi256_si128(p256_3);
p2 = _mm256_castsi256_si128(p256_2);
p1 = _mm256_castsi256_si128(p256_1);
p0 = _mm256_castsi256_si128(p256_0);
q0 = _mm256_castsi256_si128(q256_0);
q1 = _mm256_castsi256_si128(q256_1);
q2 = _mm256_castsi256_si128(q256_2);
q3 = _mm256_castsi256_si128(q256_3);
q4 = _mm256_castsi256_si128(q256_4);
{
const __m128i abs_p1p0 =
_mm_or_si128(_mm_subs_epu8(p1, p0), _mm_subs_epu8(p0, p1));
const __m128i abs_q1q0 =
_mm_or_si128(_mm_subs_epu8(q1, q0), _mm_subs_epu8(q0, q1));
const __m128i fe = _mm_set1_epi8(0xfe);
const __m128i ff = _mm_cmpeq_epi8(abs_p1p0, abs_p1p0);
__m128i abs_p0q0 =
_mm_or_si128(_mm_subs_epu8(p0, q0), _mm_subs_epu8(q0, p0));
__m128i abs_p1q1 =
_mm_or_si128(_mm_subs_epu8(p1, q1), _mm_subs_epu8(q1, p1));
__m128i work;
flat = _mm_max_epu8(abs_p1p0, abs_q1q0);
hev = _mm_subs_epu8(flat, thresh);
hev = _mm_xor_si128(_mm_cmpeq_epi8(hev, zero), ff);
abs_p0q0 = _mm_adds_epu8(abs_p0q0, abs_p0q0);
abs_p1q1 = _mm_srli_epi16(_mm_and_si128(abs_p1q1, fe), 1);
mask = _mm_subs_epu8(_mm_adds_epu8(abs_p0q0, abs_p1q1), blimit);
mask = _mm_xor_si128(_mm_cmpeq_epi8(mask, zero), ff);
// mask |= (abs(p0 - q0) * 2 + abs(p1 - q1) / 2 > blimit) * -1;
mask = _mm_max_epu8(flat, mask);
// mask |= (abs(p1 - p0) > limit) * -1;
// mask |= (abs(q1 - q0) > limit) * -1;
work = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(p2, p1), _mm_subs_epu8(p1, p2)),
_mm_or_si128(_mm_subs_epu8(p3, p2), _mm_subs_epu8(p2, p3)));
mask = _mm_max_epu8(work, mask);
work = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(q2, q1), _mm_subs_epu8(q1, q2)),
_mm_or_si128(_mm_subs_epu8(q3, q2), _mm_subs_epu8(q2, q3)));
mask = _mm_max_epu8(work, mask);
mask = _mm_subs_epu8(mask, limit);
mask = _mm_cmpeq_epi8(mask, zero);
}
// lp filter
{
const __m128i t4 = _mm_set1_epi8(4);
const __m128i t3 = _mm_set1_epi8(3);
const __m128i t80 = _mm_set1_epi8(0x80);
const __m128i te0 = _mm_set1_epi8(0xe0);
const __m128i t1f = _mm_set1_epi8(0x1f);
const __m128i t1 = _mm_set1_epi8(0x1);
const __m128i t7f = _mm_set1_epi8(0x7f);
__m128i ps1 = _mm_xor_si128(p1, t80);
__m128i ps0 = _mm_xor_si128(p0, t80);
__m128i qs0 = _mm_xor_si128(q0, t80);
__m128i qs1 = _mm_xor_si128(q1, t80);
__m128i filt;
__m128i work_a;
__m128i filter1, filter2;
__m128i flat2_p6, flat2_p5, flat2_p4, flat2_p3, flat2_p2, flat2_p1,
flat2_p0, flat2_q0, flat2_q1, flat2_q2, flat2_q3, flat2_q4, flat2_q5,
flat2_q6, flat_p2, flat_p1, flat_p0, flat_q0, flat_q1, flat_q2;
filt = _mm_and_si128(_mm_subs_epi8(ps1, qs1), hev);
work_a = _mm_subs_epi8(qs0, ps0);
filt = _mm_adds_epi8(filt, work_a);
filt = _mm_adds_epi8(filt, work_a);
filt = _mm_adds_epi8(filt, work_a);
/* (vpx_filter + 3 * (qs0 - ps0)) & mask */
filt = _mm_and_si128(filt, mask);
filter1 = _mm_adds_epi8(filt, t4);
filter2 = _mm_adds_epi8(filt, t3);
/* Filter1 >> 3 */
work_a = _mm_cmpgt_epi8(zero, filter1);
filter1 = _mm_srli_epi16(filter1, 3);
work_a = _mm_and_si128(work_a, te0);
filter1 = _mm_and_si128(filter1, t1f);
filter1 = _mm_or_si128(filter1, work_a);
qs0 = _mm_xor_si128(_mm_subs_epi8(qs0, filter1), t80);
/* Filter2 >> 3 */
work_a = _mm_cmpgt_epi8(zero, filter2);
filter2 = _mm_srli_epi16(filter2, 3);
work_a = _mm_and_si128(work_a, te0);
filter2 = _mm_and_si128(filter2, t1f);
filter2 = _mm_or_si128(filter2, work_a);
ps0 = _mm_xor_si128(_mm_adds_epi8(ps0, filter2), t80);
/* filt >> 1 */
filt = _mm_adds_epi8(filter1, t1);
work_a = _mm_cmpgt_epi8(zero, filt);
filt = _mm_srli_epi16(filt, 1);
work_a = _mm_and_si128(work_a, t80);
filt = _mm_and_si128(filt, t7f);
filt = _mm_or_si128(filt, work_a);
filt = _mm_andnot_si128(hev, filt);
ps1 = _mm_xor_si128(_mm_adds_epi8(ps1, filt), t80);
qs1 = _mm_xor_si128(_mm_subs_epi8(qs1, filt), t80);
// loopfilter done
{
__m128i work;
work = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(p2, p0), _mm_subs_epu8(p0, p2)),
_mm_or_si128(_mm_subs_epu8(q2, q0), _mm_subs_epu8(q0, q2)));
flat = _mm_max_epu8(work, flat);
work = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(p3, p0), _mm_subs_epu8(p0, p3)),
_mm_or_si128(_mm_subs_epu8(q3, q0), _mm_subs_epu8(q0, q3)));
flat = _mm_max_epu8(work, flat);
work = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(p4, p0), _mm_subs_epu8(p0, p4)),
_mm_or_si128(_mm_subs_epu8(q4, q0), _mm_subs_epu8(q0, q4)));
flat = _mm_subs_epu8(flat, one);
flat = _mm_cmpeq_epi8(flat, zero);
flat = _mm_and_si128(flat, mask);
p256_5 = _mm256_castpd_si256(
_mm256_broadcast_pd((__m128d const *)(s - 6 * p)));
q256_5 = _mm256_castpd_si256(
_mm256_broadcast_pd((__m128d const *)(s + 5 * p)));
p5 = _mm256_castsi256_si128(p256_5);
q5 = _mm256_castsi256_si128(q256_5);
flat2 = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(p5, p0), _mm_subs_epu8(p0, p5)),
_mm_or_si128(_mm_subs_epu8(q5, q0), _mm_subs_epu8(q0, q5)));
flat2 = _mm_max_epu8(work, flat2);
p256_6 = _mm256_castpd_si256(
_mm256_broadcast_pd((__m128d const *)(s - 7 * p)));
q256_6 = _mm256_castpd_si256(
_mm256_broadcast_pd((__m128d const *)(s + 6 * p)));
p6 = _mm256_castsi256_si128(p256_6);
q6 = _mm256_castsi256_si128(q256_6);
work = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(p6, p0), _mm_subs_epu8(p0, p6)),
_mm_or_si128(_mm_subs_epu8(q6, q0), _mm_subs_epu8(q0, q6)));
flat2 = _mm_max_epu8(work, flat2);
p256_7 = _mm256_castpd_si256(
_mm256_broadcast_pd((__m128d const *)(s - 8 * p)));
q256_7 = _mm256_castpd_si256(
_mm256_broadcast_pd((__m128d const *)(s + 7 * p)));
p7 = _mm256_castsi256_si128(p256_7);
q7 = _mm256_castsi256_si128(q256_7);
work = _mm_max_epu8(
_mm_or_si128(_mm_subs_epu8(p7, p0), _mm_subs_epu8(p0, p7)),
_mm_or_si128(_mm_subs_epu8(q7, q0), _mm_subs_epu8(q0, q7)));
flat2 = _mm_max_epu8(work, flat2);
flat2 = _mm_subs_epu8(flat2, one);
flat2 = _mm_cmpeq_epi8(flat2, zero);
flat2 = _mm_and_si128(flat2, flat); // flat2 & flat & mask
}
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// flat and wide flat calculations
{
const __m256i eight = _mm256_set1_epi16(8);
const __m256i four = _mm256_set1_epi16(4);
__m256i pixelFilter_p, pixelFilter_q, pixetFilter_p2p1p0,
pixetFilter_q2q1q0, sum_p7, sum_q7, sum_p3, sum_q3, res_p, res_q;
const __m256i filter =
_mm256_load_si256((__m256i const *)filt_loopfilter_avx2);
p256_7 = _mm256_shuffle_epi8(p256_7, filter);
p256_6 = _mm256_shuffle_epi8(p256_6, filter);
p256_5 = _mm256_shuffle_epi8(p256_5, filter);
p256_4 = _mm256_shuffle_epi8(p256_4, filter);
p256_3 = _mm256_shuffle_epi8(p256_3, filter);
p256_2 = _mm256_shuffle_epi8(p256_2, filter);
p256_1 = _mm256_shuffle_epi8(p256_1, filter);
p256_0 = _mm256_shuffle_epi8(p256_0, filter);
q256_0 = _mm256_shuffle_epi8(q256_0, filter);
q256_1 = _mm256_shuffle_epi8(q256_1, filter);
q256_2 = _mm256_shuffle_epi8(q256_2, filter);
q256_3 = _mm256_shuffle_epi8(q256_3, filter);
q256_4 = _mm256_shuffle_epi8(q256_4, filter);
q256_5 = _mm256_shuffle_epi8(q256_5, filter);
q256_6 = _mm256_shuffle_epi8(q256_6, filter);
q256_7 = _mm256_shuffle_epi8(q256_7, filter);
pixelFilter_p = _mm256_add_epi16(_mm256_add_epi16(p256_6, p256_5),
_mm256_add_epi16(p256_4, p256_3));
pixelFilter_q = _mm256_add_epi16(_mm256_add_epi16(q256_6, q256_5),
_mm256_add_epi16(q256_4, q256_3));
pixetFilter_p2p1p0 =
_mm256_add_epi16(p256_0, _mm256_add_epi16(p256_2, p256_1));
pixelFilter_p = _mm256_add_epi16(pixelFilter_p, pixetFilter_p2p1p0);
pixetFilter_q2q1q0 =
_mm256_add_epi16(q256_0, _mm256_add_epi16(q256_2, q256_1));
pixelFilter_q = _mm256_add_epi16(pixelFilter_q, pixetFilter_q2q1q0);
pixelFilter_p = _mm256_add_epi16(
eight, _mm256_add_epi16(pixelFilter_p, pixelFilter_q));
pixetFilter_p2p1p0 = _mm256_add_epi16(
four, _mm256_add_epi16(pixetFilter_p2p1p0, pixetFilter_q2q1q0));
res_p = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(p256_7, p256_0)), 4);
flat2_p0 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(q256_7, q256_0)), 4);
flat2_q0 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
res_p =
_mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
_mm256_add_epi16(p256_3, p256_0)),
3);
flat_p0 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q =
_mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
_mm256_add_epi16(q256_3, q256_0)),
3);
flat_q0 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
sum_p7 = _mm256_add_epi16(p256_7, p256_7);
sum_q7 = _mm256_add_epi16(q256_7, q256_7);
sum_p3 = _mm256_add_epi16(p256_3, p256_3);
sum_q3 = _mm256_add_epi16(q256_3, q256_3);
pixelFilter_q = _mm256_sub_epi16(pixelFilter_p, p256_6);
pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_6);
res_p = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_1)), 4);
flat2_p1 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_1)), 4);
flat2_q1 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
pixetFilter_q2q1q0 = _mm256_sub_epi16(pixetFilter_p2p1p0, p256_2);
pixetFilter_p2p1p0 = _mm256_sub_epi16(pixetFilter_p2p1p0, q256_2);
res_p =
_mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
_mm256_add_epi16(sum_p3, p256_1)),
3);
flat_p1 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q =
_mm256_srli_epi16(_mm256_add_epi16(pixetFilter_q2q1q0,
_mm256_add_epi16(sum_q3, q256_1)),
3);
flat_q1 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
sum_p3 = _mm256_add_epi16(sum_p3, p256_3);
sum_q3 = _mm256_add_epi16(sum_q3, q256_3);
pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_5);
pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_5);
res_p = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_2)), 4);
flat2_p2 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_2)), 4);
flat2_q2 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
pixetFilter_p2p1p0 = _mm256_sub_epi16(pixetFilter_p2p1p0, q256_1);
pixetFilter_q2q1q0 = _mm256_sub_epi16(pixetFilter_q2q1q0, p256_1);
res_p =
_mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
_mm256_add_epi16(sum_p3, p256_2)),
3);
flat_p2 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q =
_mm256_srli_epi16(_mm256_add_epi16(pixetFilter_q2q1q0,
_mm256_add_epi16(sum_q3, q256_2)),
3);
flat_q2 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_4);
pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_4);
res_p = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_3)), 4);
flat2_p3 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_3)), 4);
flat2_q3 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_3);
pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_3);
res_p = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_4)), 4);
flat2_p4 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_4)), 4);
flat2_q4 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_2);
pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_2);
res_p = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_5)), 4);
flat2_p5 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_5)), 4);
flat2_q5 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_1);
pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_1);
res_p = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_6)), 4);
flat2_p6 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
res_q = _mm256_srli_epi16(
_mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_6)), 4);
flat2_q6 = _mm256_castsi256_si128(
_mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
}
// wide flat
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
p2 = _mm_andnot_si128(flat, p2);
flat_p2 = _mm_and_si128(flat, flat_p2);
p2 = _mm_or_si128(flat_p2, p2);
p1 = _mm_andnot_si128(flat, ps1);
flat_p1 = _mm_and_si128(flat, flat_p1);
p1 = _mm_or_si128(flat_p1, p1);
p0 = _mm_andnot_si128(flat, ps0);
flat_p0 = _mm_and_si128(flat, flat_p0);
p0 = _mm_or_si128(flat_p0, p0);
q0 = _mm_andnot_si128(flat, qs0);
flat_q0 = _mm_and_si128(flat, flat_q0);
q0 = _mm_or_si128(flat_q0, q0);
q1 = _mm_andnot_si128(flat, qs1);
flat_q1 = _mm_and_si128(flat, flat_q1);
q1 = _mm_or_si128(flat_q1, q1);
q2 = _mm_andnot_si128(flat, q2);
flat_q2 = _mm_and_si128(flat, flat_q2);
q2 = _mm_or_si128(flat_q2, q2);
p6 = _mm_andnot_si128(flat2, p6);
flat2_p6 = _mm_and_si128(flat2, flat2_p6);
p6 = _mm_or_si128(flat2_p6, p6);
_mm_storeu_si128((__m128i *)(s - 7 * p), p6);
p5 = _mm_andnot_si128(flat2, p5);
flat2_p5 = _mm_and_si128(flat2, flat2_p5);
p5 = _mm_or_si128(flat2_p5, p5);
_mm_storeu_si128((__m128i *)(s - 6 * p), p5);
p4 = _mm_andnot_si128(flat2, p4);
flat2_p4 = _mm_and_si128(flat2, flat2_p4);
p4 = _mm_or_si128(flat2_p4, p4);
_mm_storeu_si128((__m128i *)(s - 5 * p), p4);
p3 = _mm_andnot_si128(flat2, p3);
flat2_p3 = _mm_and_si128(flat2, flat2_p3);
p3 = _mm_or_si128(flat2_p3, p3);
_mm_storeu_si128((__m128i *)(s - 4 * p), p3);
p2 = _mm_andnot_si128(flat2, p2);
flat2_p2 = _mm_and_si128(flat2, flat2_p2);
p2 = _mm_or_si128(flat2_p2, p2);
_mm_storeu_si128((__m128i *)(s - 3 * p), p2);
p1 = _mm_andnot_si128(flat2, p1);
flat2_p1 = _mm_and_si128(flat2, flat2_p1);
p1 = _mm_or_si128(flat2_p1, p1);
_mm_storeu_si128((__m128i *)(s - 2 * p), p1);
p0 = _mm_andnot_si128(flat2, p0);
flat2_p0 = _mm_and_si128(flat2, flat2_p0);
p0 = _mm_or_si128(flat2_p0, p0);
_mm_storeu_si128((__m128i *)(s - 1 * p), p0);
q0 = _mm_andnot_si128(flat2, q0);
flat2_q0 = _mm_and_si128(flat2, flat2_q0);
q0 = _mm_or_si128(flat2_q0, q0);
_mm_storeu_si128((__m128i *)(s - 0 * p), q0);
q1 = _mm_andnot_si128(flat2, q1);
flat2_q1 = _mm_and_si128(flat2, flat2_q1);
q1 = _mm_or_si128(flat2_q1, q1);
_mm_storeu_si128((__m128i *)(s + 1 * p), q1);
q2 = _mm_andnot_si128(flat2, q2);
flat2_q2 = _mm_and_si128(flat2, flat2_q2);
q2 = _mm_or_si128(flat2_q2, q2);
_mm_storeu_si128((__m128i *)(s + 2 * p), q2);
q3 = _mm_andnot_si128(flat2, q3);
flat2_q3 = _mm_and_si128(flat2, flat2_q3);
q3 = _mm_or_si128(flat2_q3, q3);
_mm_storeu_si128((__m128i *)(s + 3 * p), q3);
q4 = _mm_andnot_si128(flat2, q4);
flat2_q4 = _mm_and_si128(flat2, flat2_q4);
q4 = _mm_or_si128(flat2_q4, q4);
_mm_storeu_si128((__m128i *)(s + 4 * p), q4);
q5 = _mm_andnot_si128(flat2, q5);
flat2_q5 = _mm_and_si128(flat2, flat2_q5);
q5 = _mm_or_si128(flat2_q5, q5);
_mm_storeu_si128((__m128i *)(s + 5 * p), q5);
q6 = _mm_andnot_si128(flat2, q6);
flat2_q6 = _mm_and_si128(flat2, flat2_q6);
q6 = _mm_or_si128(flat2_q6, q6);
_mm_storeu_si128((__m128i *)(s + 6 * p), q6);
}
}
SIMD_INLINE __m256i DivideBy64(__m256i value)
{
return _mm256_srli_epi16(_mm256_add_epi16(value, K16_0020), 6);
}
__m256i test_mm256_srli_epi16(__m256i a) {
// CHECK-LABEL: test_mm256_srli_epi16
// CHECK: call <16 x i16> @llvm.x86.avx2.psrli.w(<16 x i16> %{{.*}}, i32 %{{.*}})
return _mm256_srli_epi16(a, 3);
}
__m256i test_mm256_srli_epi16(__m256i a) {
// CHECK: @llvm.x86.avx2.psrli.w
return _mm256_srli_epi16(a, 3);
}
int normHamming(const uchar* a, const uchar* b, int n)
{
CV_AVX_GUARD;
int i = 0;
int result = 0;
#if CV_AVX2
{
__m256i _r0 = _mm256_setzero_si256();
__m256i _0 = _mm256_setzero_si256();
__m256i _popcnt_table = _mm256_setr_epi8(0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4);
__m256i _popcnt_mask = _mm256_set1_epi8(0x0F);
for(; i <= n - 32; i+= 32)
{
__m256i _a0 = _mm256_loadu_si256((const __m256i*)(a + i));
__m256i _b0 = _mm256_loadu_si256((const __m256i*)(b + i));
__m256i _xor = _mm256_xor_si256(_a0, _b0);
__m256i _popc0 = _mm256_shuffle_epi8(_popcnt_table, _mm256_and_si256(_xor, _popcnt_mask));
__m256i _popc1 = _mm256_shuffle_epi8(_popcnt_table,
_mm256_and_si256(_mm256_srli_epi16(_xor, 4), _popcnt_mask));
_r0 = _mm256_add_epi32(_r0, _mm256_sad_epu8(_0, _mm256_add_epi8(_popc0, _popc1)));
}
_r0 = _mm256_add_epi32(_r0, _mm256_shuffle_epi32(_r0, 2));
result = _mm256_extract_epi32_(_mm256_add_epi32(_r0, _mm256_permute2x128_si256(_r0, _r0, 1)), 0);
}
#endif // CV_AVX2
#if CV_POPCNT
{
# if defined CV_POPCNT_U64
for(; i <= n - 8; i += 8)
{
result += (int)CV_POPCNT_U64(*(uint64*)(a + i) ^ *(uint64*)(b + i));
}
# endif
for(; i <= n - 4; i += 4)
{
result += CV_POPCNT_U32(*(uint*)(a + i) ^ *(uint*)(b + i));
}
}
#endif // CV_POPCNT
#if CV_SIMD128
{
v_uint32x4 t = v_setzero_u32();
for(; i <= n - v_uint8x16::nlanes; i += v_uint8x16::nlanes)
{
t += v_popcount(v_load(a + i) ^ v_load(b + i));
}
result += v_reduce_sum(t);
}
#endif // CV_SIMD128
#if CV_ENABLE_UNROLLED
for(; i <= n - 4; i += 4)
{
result += popCountTable[a[i] ^ b[i]] + popCountTable[a[i+1] ^ b[i+1]] +
popCountTable[a[i+2] ^ b[i+2]] + popCountTable[a[i+3] ^ b[i+3]];
}
#endif
for(; i < n; i++)
{
result += popCountTable[a[i] ^ b[i]];
}
return result;
}
template <> SIMD_INLINE __m256i DivideBy256<false>(__m256i value)
{
return _mm256_srli_epi16(value, 8);
}
template<bool align> SIMD_INLINE __m256i InterpolateY(const __m256i * pbx0, const __m256i * pbx1, __m256i alpha[2])
{
__m256i sum = _mm256_add_epi16(_mm256_mullo_epi16(Load<align>(pbx0), alpha[0]), _mm256_mullo_epi16(Load<align>(pbx1), alpha[1]));
return _mm256_srli_epi16(_mm256_add_epi16(sum, K16_FRACTION_ROUND_TERM), Base::BILINEAR_SHIFT);
}
