ref: b3c93d60c224a672c403bf36fbdecf20314aa2fa
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,
};
/* clang-format on */
void vpx_get16x16var_avx2(const unsigned char *src_ptr, int source_stride,
const unsigned char *ref_ptr, int recon_stride,
unsigned int *sse, int *sum) {
unsigned int i, src_2strides, ref_2strides;
__m256i sum_ref_src = _mm256_setzero_si256();
__m256i madd_ref_src = _mm256_setzero_si256();
// process two 16 byte locations in a 256 bit register
src_2strides = source_stride << 1;
ref_2strides = recon_stride << 1;
for (i = 0; i < 8; ++i) {
const __m256i zero_reg = _mm256_setzero_si256();
const __m256i src0 =
_mm256_castsi128_si256(_mm_loadu_si128((__m128i const *)(src_ptr)));
const __m256i src = _mm256_inserti128_si256(
src0, _mm_loadu_si128((__m128i const *)(src_ptr + source_stride)), 1);
const __m256i ref0 =
_mm256_castsi128_si256(_mm_loadu_si128((__m128i const *)(ref_ptr)));
const __m256i ref = _mm256_inserti128_si256(
ref0, _mm_loadu_si128((__m128i const *)(ref_ptr + recon_stride)), 1);
const __m256i src_lo = _mm256_unpacklo_epi8(src, zero_reg);
const __m256i src_hi = _mm256_unpackhi_epi8(src, zero_reg);
const __m256i ref_lo = _mm256_unpacklo_epi8(ref, zero_reg);
const __m256i ref_hi = _mm256_unpackhi_epi8(ref, zero_reg);
const __m256i diff_lo = _mm256_sub_epi16(src_lo, ref_lo);
const __m256i diff_hi = _mm256_sub_epi16(src_hi, ref_hi);
const __m256i madd_lo = _mm256_madd_epi16(diff_lo, diff_lo);
const __m256i madd_hi = _mm256_madd_epi16(diff_hi, diff_hi);
const __m256i src_ref_diff_sum = _mm256_add_epi16(diff_lo, diff_hi);
sum_ref_src = _mm256_add_epi16(sum_ref_src, src_ref_diff_sum);
// add high to low
madd_ref_src =
_mm256_add_epi32(madd_ref_src, _mm256_add_epi32(madd_lo, madd_hi));
src_ptr += src_2strides;
ref_ptr += ref_2strides;
}
{
const __m128i zero_reg = _mm_setzero_si128();
// extract the low lane and add it to the high lane
const __m128i sum_ref_src_128 =
_mm_add_epi16(_mm256_castsi256_si128(sum_ref_src),
_mm256_extractf128_si256(sum_ref_src, 1));
const __m128i madd_ref_src_128 =
_mm_add_epi32(_mm256_castsi256_si128(madd_ref_src),
_mm256_extractf128_si256(madd_ref_src, 1));
// 16 -> 32 sign extended
const __m128i sum_lo =
_mm_srai_epi32(_mm_unpacklo_epi16(zero_reg, sum_ref_src_128), 16);
// 16 -> 32 sign extended
const __m128i sum_hi =
_mm_srai_epi32(_mm_unpackhi_epi16(zero_reg, sum_ref_src_128), 16);
const __m128i sum_hl = _mm_add_epi32(sum_lo, sum_hi);
const __m128i madd_lo = _mm_unpacklo_epi32(madd_ref_src_128, zero_reg);
const __m128i madd_hi = _mm_unpackhi_epi32(madd_ref_src_128, zero_reg);
const __m128i madd = _mm_add_epi32(madd_lo, madd_hi);
const __m128i ex_sum_lo = _mm_unpacklo_epi32(sum_hl, zero_reg);
const __m128i ex_sum_hi = _mm_unpackhi_epi32(sum_hl, zero_reg);
const __m128i ex_sum = _mm_add_epi32(ex_sum_lo, ex_sum_hi);
*((int *)sse) =
_mm_cvtsi128_si32(_mm_add_epi32(madd, _mm_srli_si128(madd, 8)));
*((int *)sum) =
_mm_cvtsi128_si32(_mm_add_epi32(ex_sum, _mm_srli_si128(ex_sum, 8)));
}
}
static void get32x16var_avx2(const unsigned char *src_ptr, int source_stride,
const unsigned char *ref_ptr, int recon_stride,
unsigned int *sse, int *sum) {
unsigned int i;
const __m256i zero_reg = _mm256_setzero_si256();
__m256i sum_ref_src = _mm256_setzero_si256();
__m256i madd_ref_src = _mm256_setzero_si256();
// processing 32 elements in parallel
for (i = 0; i < 16; i++) {
const __m256i src = _mm256_loadu_si256((__m256i const *)(src_ptr));
const __m256i ref = _mm256_loadu_si256((__m256i const *)(ref_ptr));
const __m256i src_lo = _mm256_unpacklo_epi8(src, zero_reg);
const __m256i src_hi = _mm256_unpackhi_epi8(src, zero_reg);
const __m256i ref_lo = _mm256_unpacklo_epi8(ref, zero_reg);
const __m256i ref_hi = _mm256_unpackhi_epi8(ref, zero_reg);
const __m256i diff_lo = _mm256_sub_epi16(src_lo, ref_lo);
const __m256i diff_hi = _mm256_sub_epi16(src_hi, ref_hi);
const __m256i madd_lo = _mm256_madd_epi16(diff_lo, diff_lo);
const __m256i madd_hi = _mm256_madd_epi16(diff_hi, diff_hi);
// add high to low
const __m256i diff_sum = _mm256_add_epi16(diff_lo, diff_hi);
sum_ref_src = _mm256_add_epi16(sum_ref_src, diff_sum);
// add high to low
madd_ref_src =
_mm256_add_epi32(madd_ref_src, _mm256_add_epi32(madd_lo, madd_hi));
src_ptr += source_stride;
ref_ptr += recon_stride;
}
{
// 16 -> 32 sign extended
const __m256i sum_lo =
_mm256_srai_epi32(_mm256_unpacklo_epi16(zero_reg, sum_ref_src), 16);
// 16 -> 32 sign extended
const __m256i sum_hi =
_mm256_srai_epi32(_mm256_unpackhi_epi16(zero_reg, sum_ref_src), 16);
const __m256i sum_hl = _mm256_add_epi32(sum_lo, sum_hi);
const __m256i madd_lo = _mm256_unpacklo_epi32(madd_ref_src, zero_reg);
const __m256i madd_hi = _mm256_unpackhi_epi32(madd_ref_src, zero_reg);
const __m256i madd = _mm256_add_epi32(madd_lo, madd_hi);
const __m256i ex_sum_lo = _mm256_unpacklo_epi32(sum_hl, zero_reg);
const __m256i ex_sum_hi = _mm256_unpackhi_epi32(sum_hl, zero_reg);
const __m256i ex_sum = _mm256_add_epi32(ex_sum_lo, ex_sum_hi);
// shift 8 bytes eight
madd_ref_src = _mm256_srli_si256(madd, 8);
sum_ref_src = _mm256_srli_si256(ex_sum, 8);
madd_ref_src = _mm256_add_epi32(madd_ref_src, madd);
sum_ref_src = _mm256_add_epi32(sum_ref_src, ex_sum);
// extract the low lane and the high lane and add the results
*((int *)sse) =
_mm_cvtsi128_si32(_mm256_castsi256_si128(madd_ref_src)) +
_mm_cvtsi128_si32(_mm256_extractf128_si256(madd_ref_src, 1));
*((int *)sum) = _mm_cvtsi128_si32(_mm256_castsi256_si128(sum_ref_src)) +
_mm_cvtsi128_si32(_mm256_extractf128_si256(sum_ref_src, 1));
}
}
#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);
static void variance_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride, int w, int h,
unsigned int *sse, int *sum, get_var_avx2 var_fn,
int block_size) {
int i, j;
*sse = 0;
*sum = 0;
for (i = 0; i < h; i += 16) {
for (j = 0; j < w; j += block_size) {
unsigned int sse0;
int sum0;
var_fn(&src[src_stride * i + j], src_stride, &ref[ref_stride * i + j],
ref_stride, &sse0, &sum0);
*sse += sse0;
*sum += sum0;
}
}
}
unsigned int vpx_variance16x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 16, 16, sse, &sum,
vpx_get16x16var_avx2, 16);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 8);
}
unsigned int vpx_mse16x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
vpx_get16x16var_avx2(src, src_stride, ref, ref_stride, sse, &sum);
return *sse;
}
unsigned int vpx_variance32x16_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 32, 16, sse, &sum,
get32x16var_avx2, 32);
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;
variance_avx2(src, src_stride, ref, ref_stride, 32, 32, sse, &sum,
get32x16var_avx2, 32);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 10);
}
unsigned int vpx_variance64x64_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 64, 64, sse, &sum,
get32x16var_avx2, 32);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 12);
}
unsigned int vpx_variance64x32_avx2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
int sum;
variance_avx2(src, src_stride, ref, ref_stride, 64, 32, sse, &sum,
get32x16var_avx2, 32);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 11);
}
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);
}