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/*
* Copyright (c) 2017, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <immintrin.h>
#include <assert.h>
#include "config/aom_dsp_rtcd.h"
#include "aom_dsp/x86/convolve_avx2.h"
#include "aom_dsp/x86/synonyms.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/aom_filter.h"
#include "av1/common/convolve.h"
void av1_highbd_convolve_2d_sr_avx2(const uint16_t *src, int src_stride,
uint16_t *dst, int dst_stride, int w, int h,
const InterpFilterParams *filter_params_x,
const InterpFilterParams *filter_params_y,
const int subpel_x_q4,
const int subpel_y_q4,
ConvolveParams *conv_params, int bd) {
DECLARE_ALIGNED(32, int16_t, im_block[(MAX_SB_SIZE + MAX_FILTER_TAP) * 8]);
int im_h = h + filter_params_y->taps - 1;
int im_stride = 8;
int i, j;
const int fo_vert = filter_params_y->taps / 2 - 1;
const int fo_horiz = filter_params_x->taps / 2 - 1;
const uint16_t *const src_ptr = src - fo_vert * src_stride - fo_horiz;
// Check that, even with 12-bit input, the intermediate values will fit
// into an unsigned 16-bit intermediate array.
assert(bd + FILTER_BITS + 2 - conv_params->round_0 <= 16);
__m256i s[8], coeffs_y[4], coeffs_x[4];
const __m256i round_const_x = _mm256_set1_epi32(
((1 << conv_params->round_0) >> 1) + (1 << (bd + FILTER_BITS - 1)));
const __m128i round_shift_x = _mm_cvtsi32_si128(conv_params->round_0);
const __m256i round_const_y = _mm256_set1_epi32(
((1 << conv_params->round_1) >> 1) -
(1 << (bd + 2 * FILTER_BITS - conv_params->round_0 - 1)));
const __m128i round_shift_y = _mm_cvtsi32_si128(conv_params->round_1);
const int bits =
FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1;
const __m128i round_shift_bits = _mm_cvtsi32_si128(bits);
const __m256i round_const_bits = _mm256_set1_epi32((1 << bits) >> 1);
const __m256i clip_pixel =
_mm256_set1_epi16(bd == 10 ? 1023 : (bd == 12 ? 4095 : 255));
const __m256i zero = _mm256_setzero_si256();
prepare_coeffs(filter_params_x, subpel_x_q4, coeffs_x);
prepare_coeffs(filter_params_y, subpel_y_q4, coeffs_y);
for (j = 0; j < w; j += 8) {
/* Horizontal filter */
{
for (i = 0; i < im_h; i += 2) {
const __m256i row0 =
_mm256_loadu_si256((__m256i *)&src_ptr[i * src_stride + j]);
__m256i row1 = _mm256_set1_epi16(0);
if (i + 1 < im_h)
row1 =
_mm256_loadu_si256((__m256i *)&src_ptr[(i + 1) * src_stride + j]);
const __m256i r0 = _mm256_permute2x128_si256(row0, row1, 0x20);
const __m256i r1 = _mm256_permute2x128_si256(row0, row1, 0x31);
// even pixels
s[0] = _mm256_alignr_epi8(r1, r0, 0);
s[1] = _mm256_alignr_epi8(r1, r0, 4);
s[2] = _mm256_alignr_epi8(r1, r0, 8);
s[3] = _mm256_alignr_epi8(r1, r0, 12);
__m256i res_even = convolve(s, coeffs_x);
res_even = _mm256_sra_epi32(_mm256_add_epi32(res_even, round_const_x),
round_shift_x);
// odd pixels
s[0] = _mm256_alignr_epi8(r1, r0, 2);
s[1] = _mm256_alignr_epi8(r1, r0, 6);
s[2] = _mm256_alignr_epi8(r1, r0, 10);
s[3] = _mm256_alignr_epi8(r1, r0, 14);
__m256i res_odd = convolve(s, coeffs_x);
res_odd = _mm256_sra_epi32(_mm256_add_epi32(res_odd, round_const_x),
round_shift_x);
__m256i res_even1 = _mm256_packs_epi32(res_even, res_even);
__m256i res_odd1 = _mm256_packs_epi32(res_odd, res_odd);
__m256i res = _mm256_unpacklo_epi16(res_even1, res_odd1);
_mm256_store_si256((__m256i *)&im_block[i * im_stride], res);
}
}
/* Vertical filter */
{
__m256i s0 = _mm256_loadu_si256((__m256i *)(im_block + 0 * im_stride));
__m256i s1 = _mm256_loadu_si256((__m256i *)(im_block + 1 * im_stride));
__m256i s2 = _mm256_loadu_si256((__m256i *)(im_block + 2 * im_stride));
__m256i s3 = _mm256_loadu_si256((__m256i *)(im_block + 3 * im_stride));
__m256i s4 = _mm256_loadu_si256((__m256i *)(im_block + 4 * im_stride));
__m256i s5 = _mm256_loadu_si256((__m256i *)(im_block + 5 * im_stride));
s[0] = _mm256_unpacklo_epi16(s0, s1);
s[1] = _mm256_unpacklo_epi16(s2, s3);
s[2] = _mm256_unpacklo_epi16(s4, s5);
s[4] = _mm256_unpackhi_epi16(s0, s1);
s[5] = _mm256_unpackhi_epi16(s2, s3);
s[6] = _mm256_unpackhi_epi16(s4, s5);
for (i = 0; i < h; i += 2) {
const int16_t *data = &im_block[i * im_stride];
const __m256i s6 =
_mm256_loadu_si256((__m256i *)(data + 6 * im_stride));
const __m256i s7 =
_mm256_loadu_si256((__m256i *)(data + 7 * im_stride));
s[3] = _mm256_unpacklo_epi16(s6, s7);
s[7] = _mm256_unpackhi_epi16(s6, s7);
const __m256i res_a = convolve(s, coeffs_y);
__m256i res_a_round = _mm256_sra_epi32(
_mm256_add_epi32(res_a, round_const_y), round_shift_y);
res_a_round = _mm256_sra_epi32(
_mm256_add_epi32(res_a_round, round_const_bits), round_shift_bits);
if (w - j > 4) {
const __m256i res_b = convolve(s + 4, coeffs_y);
__m256i res_b_round = _mm256_sra_epi32(
_mm256_add_epi32(res_b, round_const_y), round_shift_y);
res_b_round =
_mm256_sra_epi32(_mm256_add_epi32(res_b_round, round_const_bits),
round_shift_bits);
__m256i res_16bit = _mm256_packs_epi32(res_a_round, res_b_round);
res_16bit = _mm256_min_epi16(res_16bit, clip_pixel);
res_16bit = _mm256_max_epi16(res_16bit, zero);
_mm_storeu_si128((__m128i *)&dst[i * dst_stride + j],
_mm256_castsi256_si128(res_16bit));
_mm_storeu_si128((__m128i *)&dst[i * dst_stride + j + dst_stride],
_mm256_extracti128_si256(res_16bit, 1));
} else if (w == 4) {
res_a_round = _mm256_packs_epi32(res_a_round, res_a_round);
res_a_round = _mm256_min_epi16(res_a_round, clip_pixel);
res_a_round = _mm256_max_epi16(res_a_round, zero);
_mm_storel_epi64((__m128i *)&dst[i * dst_stride + j],
_mm256_castsi256_si128(res_a_round));
_mm_storel_epi64((__m128i *)&dst[i * dst_stride + j + dst_stride],
_mm256_extracti128_si256(res_a_round, 1));
} else {
res_a_round = _mm256_packs_epi32(res_a_round, res_a_round);
res_a_round = _mm256_min_epi16(res_a_round, clip_pixel);
res_a_round = _mm256_max_epi16(res_a_round, zero);
xx_storel_32((__m128i *)&dst[i * dst_stride + j],
_mm256_castsi256_si128(res_a_round));
xx_storel_32((__m128i *)&dst[i * dst_stride + j + dst_stride],
_mm256_extracti128_si256(res_a_round, 1));
}
s[0] = s[1];
s[1] = s[2];
s[2] = s[3];
s[4] = s[5];
s[5] = s[6];
s[6] = s[7];
}
}
}
}
static INLINE void copy_64(const uint16_t *src, uint16_t *dst) {
__m256i s[4];
s[0] = _mm256_loadu_si256((__m256i *)(src + 0 * 16));
s[1] = _mm256_loadu_si256((__m256i *)(src + 1 * 16));
s[2] = _mm256_loadu_si256((__m256i *)(src + 2 * 16));
s[3] = _mm256_loadu_si256((__m256i *)(src + 3 * 16));
_mm256_storeu_si256((__m256i *)(dst + 0 * 16), s[0]);
_mm256_storeu_si256((__m256i *)(dst + 1 * 16), s[1]);
_mm256_storeu_si256((__m256i *)(dst + 2 * 16), s[2]);
_mm256_storeu_si256((__m256i *)(dst + 3 * 16), s[3]);
}
static INLINE void copy_128(const uint16_t *src, uint16_t *dst) {
__m256i s[8];
s[0] = _mm256_loadu_si256((__m256i *)(src + 0 * 16));
s[1] = _mm256_loadu_si256((__m256i *)(src + 1 * 16));
s[2] = _mm256_loadu_si256((__m256i *)(src + 2 * 16));
s[3] = _mm256_loadu_si256((__m256i *)(src + 3 * 16));
s[4] = _mm256_loadu_si256((__m256i *)(src + 4 * 16));
s[5] = _mm256_loadu_si256((__m256i *)(src + 5 * 16));
s[6] = _mm256_loadu_si256((__m256i *)(src + 6 * 16));
s[7] = _mm256_loadu_si256((__m256i *)(src + 7 * 16));
_mm256_storeu_si256((__m256i *)(dst + 0 * 16), s[0]);
_mm256_storeu_si256((__m256i *)(dst + 1 * 16), s[1]);
_mm256_storeu_si256((__m256i *)(dst + 2 * 16), s[2]);
_mm256_storeu_si256((__m256i *)(dst + 3 * 16), s[3]);
_mm256_storeu_si256((__m256i *)(dst + 4 * 16), s[4]);
_mm256_storeu_si256((__m256i *)(dst + 5 * 16), s[5]);
_mm256_storeu_si256((__m256i *)(dst + 6 * 16), s[6]);
_mm256_storeu_si256((__m256i *)(dst + 7 * 16), s[7]);
}
void av1_highbd_convolve_2d_copy_sr_avx2(
const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride, int w,
int h, const InterpFilterParams *filter_params_x,
const InterpFilterParams *filter_params_y, const int subpel_x_q4,
const int subpel_y_q4, ConvolveParams *conv_params, int bd) {
(void)filter_params_x;
(void)filter_params_y;
(void)subpel_x_q4;
(void)subpel_y_q4;
(void)conv_params;
(void)bd;
if (w >= 16) {
assert(!((intptr_t)dst % 16));
assert(!(dst_stride % 16));
}
if (w == 2) {
do {
memcpy(dst, src, 2 * sizeof(*src));
src += src_stride;
dst += dst_stride;
memcpy(dst, src, 2 * sizeof(*src));
src += src_stride;
dst += dst_stride;
h -= 2;
} while (h);
} else if (w == 4) {
do {
__m128i s[2];
s[0] = _mm_loadl_epi64((__m128i *)src);
src += src_stride;
s[1] = _mm_loadl_epi64((__m128i *)src);
src += src_stride;
_mm_storel_epi64((__m128i *)dst, s[0]);
dst += dst_stride;
_mm_storel_epi64((__m128i *)dst, s[1]);
dst += dst_stride;
h -= 2;
} while (h);
} else if (w == 8) {
do {
__m128i s[2];
s[0] = _mm_loadu_si128((__m128i *)src);
src += src_stride;
s[1] = _mm_loadu_si128((__m128i *)src);
src += src_stride;
_mm_store_si128((__m128i *)dst, s[0]);
dst += dst_stride;
_mm_store_si128((__m128i *)dst, s[1]);
dst += dst_stride;
h -= 2;
} while (h);
} else if (w == 16) {
do {
__m256i s[2];
s[0] = _mm256_loadu_si256((__m256i *)src);
src += src_stride;
s[1] = _mm256_loadu_si256((__m256i *)src);
src += src_stride;
_mm256_storeu_si256((__m256i *)dst, s[0]);
dst += dst_stride;
_mm256_storeu_si256((__m256i *)dst, s[1]);
dst += dst_stride;
h -= 2;
} while (h);
} else if (w == 32) {
do {
__m256i s[4];
s[0] = _mm256_loadu_si256((__m256i *)(src + 0 * 16));
s[1] = _mm256_loadu_si256((__m256i *)(src + 1 * 16));
src += src_stride;
s[2] = _mm256_loadu_si256((__m256i *)(src + 0 * 16));
s[3] = _mm256_loadu_si256((__m256i *)(src + 1 * 16));
src += src_stride;
_mm256_storeu_si256((__m256i *)(dst + 0 * 16), s[0]);
_mm256_storeu_si256((__m256i *)(dst + 1 * 16), s[1]);
dst += dst_stride;
_mm256_storeu_si256((__m256i *)(dst + 0 * 16), s[2]);
_mm256_storeu_si256((__m256i *)(dst + 1 * 16), s[3]);
dst += dst_stride;
h -= 2;
} while (h);
} else if (w == 64) {
do {
copy_64(src, dst);
src += src_stride;
dst += dst_stride;
copy_64(src, dst);
src += src_stride;
dst += dst_stride;
h -= 2;
} while (h);
} else {
do {
copy_128(src, dst);
src += src_stride;
dst += dst_stride;
copy_128(src, dst);
src += src_stride;
dst += dst_stride;
h -= 2;
} while (h);
}
}
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