ref: d5bd2809f1eaf93203f8bad385f2b02fd03b01e7
dir: /vpx_dsp/x86/variance_avx2.c/
/*
* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <immintrin.h> // AVX2
#include "./vpx_dsp_rtcd.h"
/* clang-format off */
DECLARE_ALIGNED(32, static const uint8_t, bilinear_filters_avx2[512]) = {
16, 0, 16, 0, 16, 0, 16, 0, 16, 0, 16, 0, 16, 0, 16, 0,
16, 0, 16, 0, 16, 0, 16, 0, 16, 0, 16, 0, 16, 0, 16, 0,
14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2,
14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2,
12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4,
12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4,
10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6,
10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10,
6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10, 6, 10,
4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12,
4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12,
2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14,
2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14, 2, 14,
};
DECLARE_ALIGNED(32, static const int8_t, adjacent_sub_avx2[32]) = {
1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1,
1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1
};
/* clang-format on */
static INLINE void variance_kernel_avx2(const __m256i src, const __m256i ref,
__m256i *const sse,
__m256i *const sum) {
const __m256i adj_sub = _mm256_load_si256((__m256i const *)adjacent_sub_avx2);
// unpack into pairs of source and reference values
const __m256i src_ref0 = _mm256_unpacklo_epi8(src, ref);
const __m256i src_ref1 = _mm256_unpackhi_epi8(src, ref);
// subtract adjacent elements using src*1 + ref*-1
const __m256i diff0 = _mm256_maddubs_epi16(src_ref0, adj_sub);
const __m256i diff1 = _mm256_maddubs_epi16(src_ref1, adj_sub);
const __m256i madd0 = _mm256_madd_epi16(diff0, diff0);
const __m256i madd1 = _mm256_madd_epi16(diff1, diff1);
// add to the running totals
*sum = _mm256_add_epi16(*sum, _mm256_add_epi16(diff0, diff1));
*sse = _mm256_add_epi32(*sse, _mm256_add_epi32(madd0, madd1));
}
static INLINE void variance_final_from_32bit_sum_avx2(__m256i vsse,
__m128i vsum,
unsigned int *const sse,
int *const sum) {
// extract the low lane and add it to the high lane
const __m128i sse_reg_128 = _mm_add_epi32(_mm256_castsi256_si128(vsse),
_mm256_extractf128_si256(vsse, 1));
// unpack sse and sum registers and add
const __m128i sse_sum_lo = _mm_unpacklo_epi32(sse_reg_128, vsum);
const __m128i sse_sum_hi = _mm_unpackhi_epi32(sse_reg_128, vsum);
const __m128i sse_sum = _mm_add_epi32(sse_sum_lo, sse_sum_hi);
// perform the final summation and extract the results
const __m128i res = _mm_add_epi32(sse_sum, _mm_srli_si128(sse_sum, 8));
*((int *)sse) = _mm_cvtsi128_si32(res);
*((int *)sum) = _mm_extract_epi32(res, 1);
}
static INLINE void variance_final_from_16bit_sum_avx2(__m256i vsse,
__m256i vsum,
unsigned int *const sse,
int *const sum) {
// extract the low lane and add it to the high lane
const __m128i sum_reg_128 = _mm_add_epi16(_mm256_castsi256_si128(vsum),
_mm256_extractf128_si256(vsum, 1));
const __m128i sum_reg_64 =
_mm_add_epi16(sum_reg_128, _mm_srli_si128(sum_reg_128, 8));
const __m128i sum_int32 = _mm_cvtepi16_epi32(sum_reg_64);
variance_final_from_32bit_sum_avx2(vsse, sum_int32, sse, sum);
}
static INLINE __m256i sum_to_32bit_avx2(const __m256i sum) {
const __m256i sum_lo = _mm256_cvtepi16_epi32(_mm256_castsi256_si128(sum));
const __m256i sum_hi =
_mm256_cvtepi16_epi32(_mm256_extractf128_si256(sum, 1));
return _mm256_add_epi32(sum_lo, sum_hi);
}
static INLINE void variance16_kernel_avx2(
const uint8_t *const src, const int src_stride, const uint8_t *const ref,
const int ref_stride, __m256i *const sse, __m256i *const sum) {
const __m128i s0 = _mm_loadu_si128((__m128i const *)(src + 0 * src_stride));
const __m128i s1 = _mm_loadu_si128((__m128i const *)(src + 1 * src_stride));
const __m128i r0 = _mm_loadu_si128((__m128i const *)(ref + 0 * ref_stride));
const __m128i r1 = _mm_loadu_si128((__m128i const *)(ref + 1 * ref_stride));
const __m256i s = _mm256_inserti128_si256(_mm256_castsi128_si256(s0), s1, 1);
const __m256i r = _mm256_inserti128_si256(_mm256_castsi128_si256(r0), r1, 1);
variance_kernel_avx2(s, r, sse, sum);
}
static INLINE void variance32_kernel_avx2(const uint8_t *const src,
const uint8_t *const ref,
__m256i *const sse,
__m256i *const sum) {
const __m256i s = _mm256_loadu_si256((__m256i const *)(src));
const __m256i r = _mm256_loadu_si256((__m256i const *)(ref));
variance_kernel_avx2(s, r, sse, sum);
}
static INLINE void variance16_avx2(const uint8_t *src, const int src_stride,
const uint8_t *ref, const int ref_stride,
const int h, __m256i *const vsse,
__m256i *const vsum) {
int i;
*vsum = _mm256_setzero_si256();
*vsse = _mm256_setzero_si256();
for (i = 0; i < h; i += 2) {
variance16_kernel_avx2(src, src_stride, ref, ref_stride, vsse, vsum);
src += 2 * src_stride;
ref += 2 * ref_stride;
}
}
static INLINE void variance32_avx2(const uint8_t *src, const int src_stride,
const uint8_t *ref, const int ref_stride,
const int h, __m256i *const vsse,
__m256i *const vsum) {
int i;
*vsum = _mm256_setzero_si256();
*vsse = _mm256_setzero_si256();
for (i = 0; i < h; i++) {
variance32_kernel_avx2(src, ref, vsse, vsum);
src += src_stride;
ref += ref_stride;
}
}
static INLINE void variance64_avx2(const uint8_t *src, const int src_stride,
const uint8_t *ref, const int ref_stride,
const int h, __m256i *const vsse,
__m256i *const vsum) {
int i;
*vsum = _mm256_setzero_si256();
for (i = 0; i < h; i++) {
variance32_kernel_avx2(src + 0, ref + 0, vsse, vsum);
variance32_kernel_avx2(src + 32, ref + 32, vsse, vsum);
src += src_stride;
ref += ref_stride;
}
}
void vpx_get16x16var_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride, unsigned int *sse,
int *sum) {
__m256i vsse, vsum;
variance16_avx2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
variance_final_from_16bit_sum_avx2(vsse, vsum, sse, sum);
}
#define FILTER_SRC(filter) \
/* filter the source */ \
exp_src_lo = _mm256_maddubs_epi16(exp_src_lo, filter); \
exp_src_hi = _mm256_maddubs_epi16(exp_src_hi, filter); \
\
/* add 8 to source */ \
exp_src_lo = _mm256_add_epi16(exp_src_lo, pw8); \
exp_src_hi = _mm256_add_epi16(exp_src_hi, pw8); \
\
/* divide source by 16 */ \
exp_src_lo = _mm256_srai_epi16(exp_src_lo, 4); \
exp_src_hi = _mm256_srai_epi16(exp_src_hi, 4);
#define CALC_SUM_SSE_INSIDE_LOOP \
/* expand each byte to 2 bytes */ \
exp_dst_lo = _mm256_unpacklo_epi8(dst_reg, zero_reg); \
exp_dst_hi = _mm256_unpackhi_epi8(dst_reg, zero_reg); \
/* source - dest */ \
exp_src_lo = _mm256_sub_epi16(exp_src_lo, exp_dst_lo); \
exp_src_hi = _mm256_sub_epi16(exp_src_hi, exp_dst_hi); \
/* caculate sum */ \
*sum_reg = _mm256_add_epi16(*sum_reg, exp_src_lo); \
exp_src_lo = _mm256_madd_epi16(exp_src_lo, exp_src_lo); \
*sum_reg = _mm256_add_epi16(*sum_reg, exp_src_hi); \
exp_src_hi = _mm256_madd_epi16(exp_src_hi, exp_src_hi); \
/* calculate sse */ \
*sse_reg = _mm256_add_epi32(*sse_reg, exp_src_lo); \
*sse_reg = _mm256_add_epi32(*sse_reg, exp_src_hi);
// final calculation to sum and sse
#define CALC_SUM_AND_SSE \
res_cmp = _mm256_cmpgt_epi16(zero_reg, sum_reg); \
sse_reg_hi = _mm256_srli_si256(sse_reg, 8); \
sum_reg_lo = _mm256_unpacklo_epi16(sum_reg, res_cmp); \
sum_reg_hi = _mm256_unpackhi_epi16(sum_reg, res_cmp); \
sse_reg = _mm256_add_epi32(sse_reg, sse_reg_hi); \
sum_reg = _mm256_add_epi32(sum_reg_lo, sum_reg_hi); \
\
sse_reg_hi = _mm256_srli_si256(sse_reg, 4); \
sum_reg_hi = _mm256_srli_si256(sum_reg, 8); \
\
sse_reg = _mm256_add_epi32(sse_reg, sse_reg_hi); \
sum_reg = _mm256_add_epi32(sum_reg, sum_reg_hi); \
*((int *)sse) = _mm_cvtsi128_si32(_mm256_castsi256_si128(sse_reg)) + \
_mm_cvtsi128_si32(_mm256_extractf128_si256(sse_reg, 1)); \
sum_reg_hi = _mm256_srli_si256(sum_reg, 4); \
sum_reg = _mm256_add_epi32(sum_reg, sum_reg_hi); \
sum = _mm_cvtsi128_si32(_mm256_castsi256_si128(sum_reg)) + \
_mm_cvtsi128_si32(_mm256_extractf128_si256(sum_reg, 1));
static INLINE void spv32_x0_y0(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg) {
const __m256i zero_reg = _mm256_setzero_si256();
__m256i exp_src_lo, exp_src_hi, exp_dst_lo, exp_dst_hi;
int i;
for (i = 0; i < height; i++) {
const __m256i dst_reg = _mm256_loadu_si256((__m256i const *)dst);
const __m256i src_reg = _mm256_loadu_si256((__m256i const *)src);
if (do_sec) {
const __m256i sec_reg = _mm256_loadu_si256((__m256i const *)sec);
const __m256i avg_reg = _mm256_avg_epu8(src_reg, sec_reg);
exp_src_lo = _mm256_unpacklo_epi8(avg_reg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(avg_reg, zero_reg);
sec += sec_stride;
} else {
exp_src_lo = _mm256_unpacklo_epi8(src_reg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(src_reg, zero_reg);
}
CALC_SUM_SSE_INSIDE_LOOP
src += src_stride;
dst += dst_stride;
}
}
// (x == 0, y == 4) or (x == 4, y == 0). sstep determines the direction.
static INLINE void spv32_half_zero(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride,
int do_sec, int height, __m256i *sum_reg,
__m256i *sse_reg, int sstep) {
const __m256i zero_reg = _mm256_setzero_si256();
__m256i exp_src_lo, exp_src_hi, exp_dst_lo, exp_dst_hi;
int i;
for (i = 0; i < height; i++) {
const __m256i dst_reg = _mm256_loadu_si256((__m256i const *)dst);
const __m256i src_0 = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_1 = _mm256_loadu_si256((__m256i const *)(src + sstep));
const __m256i src_avg = _mm256_avg_epu8(src_0, src_1);
if (do_sec) {
const __m256i sec_reg = _mm256_loadu_si256((__m256i const *)sec);
const __m256i avg_reg = _mm256_avg_epu8(src_avg, sec_reg);
exp_src_lo = _mm256_unpacklo_epi8(avg_reg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(avg_reg, zero_reg);
sec += sec_stride;
} else {
exp_src_lo = _mm256_unpacklo_epi8(src_avg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(src_avg, zero_reg);
}
CALC_SUM_SSE_INSIDE_LOOP
src += src_stride;
dst += dst_stride;
}
}
static INLINE void spv32_x0_y4(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg) {
spv32_half_zero(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, sum_reg, sse_reg, src_stride);
}
static INLINE void spv32_x4_y0(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg) {
spv32_half_zero(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, sum_reg, sse_reg, 1);
}
static INLINE void spv32_x4_y4(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg) {
const __m256i zero_reg = _mm256_setzero_si256();
const __m256i src_a = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_b = _mm256_loadu_si256((__m256i const *)(src + 1));
__m256i prev_src_avg = _mm256_avg_epu8(src_a, src_b);
__m256i exp_src_lo, exp_src_hi, exp_dst_lo, exp_dst_hi;
int i;
src += src_stride;
for (i = 0; i < height; i++) {
const __m256i dst_reg = _mm256_loadu_si256((__m256i const *)dst);
const __m256i src_0 = _mm256_loadu_si256((__m256i const *)(src));
const __m256i src_1 = _mm256_loadu_si256((__m256i const *)(src + 1));
const __m256i src_avg = _mm256_avg_epu8(src_0, src_1);
const __m256i current_avg = _mm256_avg_epu8(prev_src_avg, src_avg);
prev_src_avg = src_avg;
if (do_sec) {
const __m256i sec_reg = _mm256_loadu_si256((__m256i const *)sec);
const __m256i avg_reg = _mm256_avg_epu8(current_avg, sec_reg);
exp_src_lo = _mm256_unpacklo_epi8(avg_reg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(avg_reg, zero_reg);
sec += sec_stride;
} else {
exp_src_lo = _mm256_unpacklo_epi8(current_avg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(current_avg, zero_reg);
}
// save current source average
CALC_SUM_SSE_INSIDE_LOOP
dst += dst_stride;
src += src_stride;
}
}
// (x == 0, y == bil) or (x == 4, y == bil). sstep determines the direction.
static INLINE void spv32_bilin_zero(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride,
int do_sec, int height, __m256i *sum_reg,
__m256i *sse_reg, int offset, int sstep) {
const __m256i zero_reg = _mm256_setzero_si256();
const __m256i pw8 = _mm256_set1_epi16(8);
const __m256i filter = _mm256_load_si256(
(__m256i const *)(bilinear_filters_avx2 + (offset << 5)));
__m256i exp_src_lo, exp_src_hi, exp_dst_lo, exp_dst_hi;
int i;
for (i = 0; i < height; i++) {
const __m256i dst_reg = _mm256_loadu_si256((__m256i const *)dst);
const __m256i src_0 = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_1 = _mm256_loadu_si256((__m256i const *)(src + sstep));
exp_src_lo = _mm256_unpacklo_epi8(src_0, src_1);
exp_src_hi = _mm256_unpackhi_epi8(src_0, src_1);
FILTER_SRC(filter)
if (do_sec) {
const __m256i sec_reg = _mm256_loadu_si256((__m256i const *)sec);
const __m256i exp_src = _mm256_packus_epi16(exp_src_lo, exp_src_hi);
const __m256i avg_reg = _mm256_avg_epu8(exp_src, sec_reg);
sec += sec_stride;
exp_src_lo = _mm256_unpacklo_epi8(avg_reg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(avg_reg, zero_reg);
}
CALC_SUM_SSE_INSIDE_LOOP
src += src_stride;
dst += dst_stride;
}
}
static INLINE void spv32_x0_yb(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg,
int y_offset) {
spv32_bilin_zero(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, sum_reg, sse_reg, y_offset, src_stride);
}
static INLINE void spv32_xb_y0(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg,
int x_offset) {
spv32_bilin_zero(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, sum_reg, sse_reg, x_offset, 1);
}
static INLINE void spv32_x4_yb(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg,
int y_offset) {
const __m256i zero_reg = _mm256_setzero_si256();
const __m256i pw8 = _mm256_set1_epi16(8);
const __m256i filter = _mm256_load_si256(
(__m256i const *)(bilinear_filters_avx2 + (y_offset << 5)));
const __m256i src_a = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_b = _mm256_loadu_si256((__m256i const *)(src + 1));
__m256i prev_src_avg = _mm256_avg_epu8(src_a, src_b);
__m256i exp_src_lo, exp_src_hi, exp_dst_lo, exp_dst_hi;
int i;
src += src_stride;
for (i = 0; i < height; i++) {
const __m256i dst_reg = _mm256_loadu_si256((__m256i const *)dst);
const __m256i src_0 = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_1 = _mm256_loadu_si256((__m256i const *)(src + 1));
const __m256i src_avg = _mm256_avg_epu8(src_0, src_1);
exp_src_lo = _mm256_unpacklo_epi8(prev_src_avg, src_avg);
exp_src_hi = _mm256_unpackhi_epi8(prev_src_avg, src_avg);
prev_src_avg = src_avg;
FILTER_SRC(filter)
if (do_sec) {
const __m256i sec_reg = _mm256_loadu_si256((__m256i const *)sec);
const __m256i exp_src_avg = _mm256_packus_epi16(exp_src_lo, exp_src_hi);
const __m256i avg_reg = _mm256_avg_epu8(exp_src_avg, sec_reg);
exp_src_lo = _mm256_unpacklo_epi8(avg_reg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(avg_reg, zero_reg);
sec += sec_stride;
}
CALC_SUM_SSE_INSIDE_LOOP
dst += dst_stride;
src += src_stride;
}
}
static INLINE void spv32_xb_y4(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg,
int x_offset) {
const __m256i zero_reg = _mm256_setzero_si256();
const __m256i pw8 = _mm256_set1_epi16(8);
const __m256i filter = _mm256_load_si256(
(__m256i const *)(bilinear_filters_avx2 + (x_offset << 5)));
const __m256i src_a = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_b = _mm256_loadu_si256((__m256i const *)(src + 1));
__m256i exp_src_lo, exp_src_hi, exp_dst_lo, exp_dst_hi;
__m256i src_reg, src_pack;
int i;
exp_src_lo = _mm256_unpacklo_epi8(src_a, src_b);
exp_src_hi = _mm256_unpackhi_epi8(src_a, src_b);
FILTER_SRC(filter)
// convert each 16 bit to 8 bit to each low and high lane source
src_pack = _mm256_packus_epi16(exp_src_lo, exp_src_hi);
src += src_stride;
for (i = 0; i < height; i++) {
const __m256i dst_reg = _mm256_loadu_si256((__m256i const *)dst);
const __m256i src_0 = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_1 = _mm256_loadu_si256((__m256i const *)(src + 1));
exp_src_lo = _mm256_unpacklo_epi8(src_0, src_1);
exp_src_hi = _mm256_unpackhi_epi8(src_0, src_1);
FILTER_SRC(filter)
src_reg = _mm256_packus_epi16(exp_src_lo, exp_src_hi);
// average between previous pack to the current
src_pack = _mm256_avg_epu8(src_pack, src_reg);
if (do_sec) {
const __m256i sec_reg = _mm256_loadu_si256((__m256i const *)sec);
const __m256i avg_pack = _mm256_avg_epu8(src_pack, sec_reg);
exp_src_lo = _mm256_unpacklo_epi8(avg_pack, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(avg_pack, zero_reg);
sec += sec_stride;
} else {
exp_src_lo = _mm256_unpacklo_epi8(src_pack, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(src_pack, zero_reg);
}
CALC_SUM_SSE_INSIDE_LOOP
src_pack = src_reg;
dst += dst_stride;
src += src_stride;
}
}
static INLINE void spv32_xb_yb(const uint8_t *src, int src_stride,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride, int do_sec,
int height, __m256i *sum_reg, __m256i *sse_reg,
int x_offset, int y_offset) {
const __m256i zero_reg = _mm256_setzero_si256();
const __m256i pw8 = _mm256_set1_epi16(8);
const __m256i xfilter = _mm256_load_si256(
(__m256i const *)(bilinear_filters_avx2 + (x_offset << 5)));
const __m256i yfilter = _mm256_load_si256(
(__m256i const *)(bilinear_filters_avx2 + (y_offset << 5)));
const __m256i src_a = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_b = _mm256_loadu_si256((__m256i const *)(src + 1));
__m256i exp_src_lo, exp_src_hi, exp_dst_lo, exp_dst_hi;
__m256i prev_src_pack, src_pack;
int i;
exp_src_lo = _mm256_unpacklo_epi8(src_a, src_b);
exp_src_hi = _mm256_unpackhi_epi8(src_a, src_b);
FILTER_SRC(xfilter)
// convert each 16 bit to 8 bit to each low and high lane source
prev_src_pack = _mm256_packus_epi16(exp_src_lo, exp_src_hi);
src += src_stride;
for (i = 0; i < height; i++) {
const __m256i dst_reg = _mm256_loadu_si256((__m256i const *)dst);
const __m256i src_0 = _mm256_loadu_si256((__m256i const *)src);
const __m256i src_1 = _mm256_loadu_si256((__m256i const *)(src + 1));
exp_src_lo = _mm256_unpacklo_epi8(src_0, src_1);
exp_src_hi = _mm256_unpackhi_epi8(src_0, src_1);
FILTER_SRC(xfilter)
src_pack = _mm256_packus_epi16(exp_src_lo, exp_src_hi);
// merge previous pack to current pack source
exp_src_lo = _mm256_unpacklo_epi8(prev_src_pack, src_pack);
exp_src_hi = _mm256_unpackhi_epi8(prev_src_pack, src_pack);
FILTER_SRC(yfilter)
if (do_sec) {
const __m256i sec_reg = _mm256_loadu_si256((__m256i const *)sec);
const __m256i exp_src = _mm256_packus_epi16(exp_src_lo, exp_src_hi);
const __m256i avg_reg = _mm256_avg_epu8(exp_src, sec_reg);
exp_src_lo = _mm256_unpacklo_epi8(avg_reg, zero_reg);
exp_src_hi = _mm256_unpackhi_epi8(avg_reg, zero_reg);
sec += sec_stride;
}
prev_src_pack = src_pack;
CALC_SUM_SSE_INSIDE_LOOP
dst += dst_stride;
src += src_stride;
}
}
static INLINE int sub_pix_var32xh(const uint8_t *src, int src_stride,
int x_offset, int y_offset,
const uint8_t *dst, int dst_stride,
const uint8_t *sec, int sec_stride,
int do_sec, int height, unsigned int *sse) {
const __m256i zero_reg = _mm256_setzero_si256();
__m256i sum_reg = _mm256_setzero_si256();
__m256i sse_reg = _mm256_setzero_si256();
__m256i sse_reg_hi, res_cmp, sum_reg_lo, sum_reg_hi;
int sum;
// x_offset = 0 and y_offset = 0
if (x_offset == 0) {
if (y_offset == 0) {
spv32_x0_y0(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg);
// x_offset = 0 and y_offset = 4
} else if (y_offset == 4) {
spv32_x0_y4(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg);
// x_offset = 0 and y_offset = bilin interpolation
} else {
spv32_x0_yb(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg, y_offset);
}
// x_offset = 4 and y_offset = 0
} else if (x_offset == 4) {
if (y_offset == 0) {
spv32_x4_y0(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg);
// x_offset = 4 and y_offset = 4
} else if (y_offset == 4) {
spv32_x4_y4(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg);
// x_offset = 4 and y_offset = bilin interpolation
} else {
spv32_x4_yb(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg, y_offset);
}
// x_offset = bilin interpolation and y_offset = 0
} else {
if (y_offset == 0) {
spv32_xb_y0(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg, x_offset);
// x_offset = bilin interpolation and y_offset = 4
} else if (y_offset == 4) {
spv32_xb_y4(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg, x_offset);
// x_offset = bilin interpolation and y_offset = bilin interpolation
} else {
spv32_xb_yb(src, src_stride, dst, dst_stride, sec, sec_stride, do_sec,
height, &sum_reg, &sse_reg, x_offset, y_offset);
}
}
CALC_SUM_AND_SSE
return sum;
}
static unsigned int sub_pixel_variance32xh_avx2(
const uint8_t *src, int src_stride, int x_offset, int y_offset,
const uint8_t *dst, int dst_stride, int height, unsigned int *sse) {
return sub_pix_var32xh(src, src_stride, x_offset, y_offset, dst, dst_stride,
NULL, 0, 0, height, sse);
}
static unsigned int sub_pixel_avg_variance32xh_avx2(
const uint8_t *src, int src_stride, int x_offset, int y_offset,
const uint8_t *dst, int dst_stride, const uint8_t *sec, int sec_stride,
int height, unsigned int *sse) {
return sub_pix_var32xh(src, src_stride, x_offset, y_offset, dst, dst_stride,
sec, sec_stride, 1, height, sse);
}
typedef void (*get_var_avx2)(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse, int *sum);
unsigned int vpx_variance16x8_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
variance16_avx2(src, src_stride, ref, ref_stride, 8, &vsse, &vsum);
variance_final_from_16bit_sum_avx2(vsse, vsum, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 7);
}
unsigned int vpx_variance16x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
variance16_avx2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
variance_final_from_16bit_sum_avx2(vsse, vsum, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 8);
}
unsigned int vpx_variance16x32_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
variance16_avx2(src, src_stride, ref, ref_stride, 32, &vsse, &vsum);
variance_final_from_16bit_sum_avx2(vsse, vsum, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 9);
}
unsigned int vpx_variance32x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
variance32_avx2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
variance_final_from_16bit_sum_avx2(vsse, vsum, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 9);
}
unsigned int vpx_variance32x32_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
__m128i vsum_128;
variance32_avx2(src, src_stride, ref, ref_stride, 32, &vsse, &vsum);
vsum_128 = _mm_add_epi16(_mm256_castsi256_si128(vsum),
_mm256_extractf128_si256(vsum, 1));
vsum_128 = _mm_add_epi32(_mm_cvtepi16_epi32(vsum_128),
_mm_cvtepi16_epi32(_mm_srli_si128(vsum_128, 8)));
variance_final_from_32bit_sum_avx2(vsse, vsum_128, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 10);
}
unsigned int vpx_variance32x64_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
__m128i vsum_128;
variance32_avx2(src, src_stride, ref, ref_stride, 64, &vsse, &vsum);
vsum = sum_to_32bit_avx2(vsum);
vsum_128 = _mm_add_epi32(_mm256_castsi256_si128(vsum),
_mm256_extractf128_si256(vsum, 1));
variance_final_from_32bit_sum_avx2(vsse, vsum_128, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 11);
}
unsigned int vpx_variance64x32_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
__m256i vsse = _mm256_setzero_si256();
__m256i vsum = _mm256_setzero_si256();
__m128i vsum_128;
int sum;
variance64_avx2(src, src_stride, ref, ref_stride, 32, &vsse, &vsum);
vsum = sum_to_32bit_avx2(vsum);
vsum_128 = _mm_add_epi32(_mm256_castsi256_si128(vsum),
_mm256_extractf128_si256(vsum, 1));
variance_final_from_32bit_sum_avx2(vsse, vsum_128, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 11);
}
unsigned int vpx_variance64x64_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
__m256i vsse = _mm256_setzero_si256();
__m256i vsum = _mm256_setzero_si256();
__m128i vsum_128;
int sum;
int i = 0;
for (i = 0; i < 2; i++) {
__m256i vsum16;
variance64_avx2(src + 32 * i * src_stride, src_stride,
ref + 32 * i * ref_stride, ref_stride, 32, &vsse, &vsum16);
vsum = _mm256_add_epi32(vsum, sum_to_32bit_avx2(vsum16));
}
vsum_128 = _mm_add_epi32(_mm256_castsi256_si128(vsum),
_mm256_extractf128_si256(vsum, 1));
variance_final_from_32bit_sum_avx2(vsse, vsum_128, sse, &sum);
return *sse - (unsigned int)(((int64_t)sum * sum) >> 12);
}
unsigned int vpx_mse16x8_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
variance16_avx2(src, src_stride, ref, ref_stride, 8, &vsse, &vsum);
variance_final_from_16bit_sum_avx2(vsse, vsum, sse, &sum);
return *sse;
}
unsigned int vpx_mse16x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
__m256i vsse, vsum;
variance16_avx2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
variance_final_from_16bit_sum_avx2(vsse, vsum, sse, &sum);
return *sse;
}
unsigned int vpx_sub_pixel_variance64x64_avx2(const uint8_t *src,
int src_stride, int x_offset,
int y_offset, const uint8_t *dst,
int dst_stride,
unsigned int *sse) {
unsigned int sse1;
const int se1 = sub_pixel_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, 64, &sse1);
unsigned int sse2;
const int se2 =
sub_pixel_variance32xh_avx2(src + 32, src_stride, x_offset, y_offset,
dst + 32, dst_stride, 64, &sse2);
const int se = se1 + se2;
*sse = sse1 + sse2;
return *sse - (uint32_t)(((int64_t)se * se) >> 12);
}
unsigned int vpx_sub_pixel_variance32x32_avx2(const uint8_t *src,
int src_stride, int x_offset,
int y_offset, const uint8_t *dst,
int dst_stride,
unsigned int *sse) {
const int se = sub_pixel_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, 32, sse);
return *sse - (uint32_t)(((int64_t)se * se) >> 10);
}
unsigned int vpx_sub_pixel_avg_variance64x64_avx2(
const uint8_t *src, int src_stride, int x_offset, int y_offset,
const uint8_t *dst, int dst_stride, unsigned int *sse, const uint8_t *sec) {
unsigned int sse1;
const int se1 = sub_pixel_avg_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, sec, 64, 64, &sse1);
unsigned int sse2;
const int se2 = sub_pixel_avg_variance32xh_avx2(
src + 32, src_stride, x_offset, y_offset, dst + 32, dst_stride, sec + 32,
64, 64, &sse2);
const int se = se1 + se2;
*sse = sse1 + sse2;
return *sse - (uint32_t)(((int64_t)se * se) >> 12);
}
unsigned int vpx_sub_pixel_avg_variance32x32_avx2(
const uint8_t *src, int src_stride, int x_offset, int y_offset,
const uint8_t *dst, int dst_stride, unsigned int *sse, const uint8_t *sec) {
// Process 32 elements in parallel.
const int se = sub_pixel_avg_variance32xh_avx2(
src, src_stride, x_offset, y_offset, dst, dst_stride, sec, 32, 32, sse);
return *sse - (uint32_t)(((int64_t)se * se) >> 10);
}