| /* |
| * Copyright (c) 2018, 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/av1_rtcd.h" |
| |
| #include "av1/common/convolve.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| #include "aom_dsp/aom_filter.h" |
| #include "aom_dsp/x86/synonyms.h" |
| #include "aom_dsp/x86/synonyms_avx2.h" |
| |
| // 128-bit xmmwords are written as [ ... ] with the MSB on the left. |
| // 256-bit ymmwords are written as two xmmwords, [ ... ][ ... ] with the MSB |
| // on the left. |
| // A row of, say, 16-bit pixels with values p0, p1, p2, ..., p14, p15 will be |
| // loaded and stored as [ p15 ... p9 p8 ][ p7 ... p1 p0 ]. |
| void av1_highbd_wiener_convolve_add_src_avx2( |
| const uint8_t *src8, ptrdiff_t src_stride, uint8_t *dst8, |
| ptrdiff_t dst_stride, const int16_t *filter_x, int x_step_q4, |
| const int16_t *filter_y, int y_step_q4, int w, int h, |
| const WienerConvolveParams *conv_params, int bd) { |
| assert(x_step_q4 == 16 && y_step_q4 == 16); |
| assert(!(w & 7)); |
| assert(bd + FILTER_BITS - conv_params->round_0 + 2 <= 16); |
| (void)x_step_q4; |
| (void)y_step_q4; |
| |
| const uint16_t *const src = CONVERT_TO_SHORTPTR(src8); |
| uint16_t *const dst = CONVERT_TO_SHORTPTR(dst8); |
| |
| DECLARE_ALIGNED(32, uint16_t, |
| temp[(MAX_SB_SIZE + SUBPEL_TAPS - 1) * MAX_SB_SIZE]); |
| int intermediate_height = h + SUBPEL_TAPS - 1; |
| const int center_tap = ((SUBPEL_TAPS - 1) / 2); |
| const uint16_t *const src_ptr = src - center_tap * src_stride - center_tap; |
| |
| const __m128i zero_128 = _mm_setzero_si128(); |
| const __m256i zero_256 = _mm256_setzero_si256(); |
| |
| // Add an offset to account for the "add_src" part of the convolve function. |
| const __m128i offset = _mm_insert_epi16(zero_128, 1 << FILTER_BITS, 3); |
| |
| const __m256i clamp_low = zero_256; |
| |
| /* Horizontal filter */ |
| { |
| const __m256i clamp_high_ep = |
| _mm256_set1_epi16(WIENER_CLAMP_LIMIT(conv_params->round_0, bd) - 1); |
| |
| // coeffs [ f7 f6 f5 f4 f3 f2 f1 f0 ] |
| const __m128i coeffs_x = _mm_add_epi16(xx_loadu_128(filter_x), offset); |
| |
| // coeffs [ f3 f2 f3 f2 f1 f0 f1 f0 ] |
| const __m128i coeffs_0123 = _mm_unpacklo_epi32(coeffs_x, coeffs_x); |
| // coeffs [ f7 f6 f7 f6 f5 f4 f5 f4 ] |
| const __m128i coeffs_4567 = _mm_unpackhi_epi32(coeffs_x, coeffs_x); |
| |
| // coeffs [ f1 f0 f1 f0 f1 f0 f1 f0 ] |
| const __m128i coeffs_01_128 = _mm_unpacklo_epi64(coeffs_0123, coeffs_0123); |
| // coeffs [ f3 f2 f3 f2 f3 f2 f3 f2 ] |
| const __m128i coeffs_23_128 = _mm_unpackhi_epi64(coeffs_0123, coeffs_0123); |
| // coeffs [ f5 f4 f5 f4 f5 f4 f5 f4 ] |
| const __m128i coeffs_45_128 = _mm_unpacklo_epi64(coeffs_4567, coeffs_4567); |
| // coeffs [ f7 f6 f7 f6 f7 f6 f7 f6 ] |
| const __m128i coeffs_67_128 = _mm_unpackhi_epi64(coeffs_4567, coeffs_4567); |
| |
| // coeffs [ f1 f0 f1 f0 f1 f0 f1 f0 ][ f1 f0 f1 f0 f1 f0 f1 f0 ] |
| const __m256i coeffs_01 = yy_set_m128i(coeffs_01_128, coeffs_01_128); |
| // coeffs [ f3 f2 f3 f2 f3 f2 f3 f2 ][ f3 f2 f3 f2 f3 f2 f3 f2 ] |
| const __m256i coeffs_23 = yy_set_m128i(coeffs_23_128, coeffs_23_128); |
| // coeffs [ f5 f4 f5 f4 f5 f4 f5 f4 ][ f5 f4 f5 f4 f5 f4 f5 f4 ] |
| const __m256i coeffs_45 = yy_set_m128i(coeffs_45_128, coeffs_45_128); |
| // coeffs [ f7 f6 f7 f6 f7 f6 f7 f6 ][ f7 f6 f7 f6 f7 f6 f7 f6 ] |
| const __m256i coeffs_67 = yy_set_m128i(coeffs_67_128, coeffs_67_128); |
| |
| const __m256i round_const = _mm256_set1_epi32( |
| (1 << (conv_params->round_0 - 1)) + (1 << (bd + FILTER_BITS - 1))); |
| |
| for (int i = 0; i < intermediate_height; ++i) { |
| for (int j = 0; j < w; j += 16) { |
| const uint16_t *src_ij = src_ptr + i * src_stride + j; |
| |
| // Load 16-bit src data |
| const __m256i src_0 = yy_loadu_256(src_ij + 0); |
| const __m256i src_1 = yy_loadu_256(src_ij + 1); |
| const __m256i src_2 = yy_loadu_256(src_ij + 2); |
| const __m256i src_3 = yy_loadu_256(src_ij + 3); |
| const __m256i src_4 = yy_loadu_256(src_ij + 4); |
| const __m256i src_5 = yy_loadu_256(src_ij + 5); |
| const __m256i src_6 = yy_loadu_256(src_ij + 6); |
| const __m256i src_7 = yy_loadu_256(src_ij + 7); |
| |
| // Multiply src data by filter coeffs and sum pairs |
| const __m256i res_0 = _mm256_madd_epi16(src_0, coeffs_01); |
| const __m256i res_1 = _mm256_madd_epi16(src_1, coeffs_01); |
| const __m256i res_2 = _mm256_madd_epi16(src_2, coeffs_23); |
| const __m256i res_3 = _mm256_madd_epi16(src_3, coeffs_23); |
| const __m256i res_4 = _mm256_madd_epi16(src_4, coeffs_45); |
| const __m256i res_5 = _mm256_madd_epi16(src_5, coeffs_45); |
| const __m256i res_6 = _mm256_madd_epi16(src_6, coeffs_67); |
| const __m256i res_7 = _mm256_madd_epi16(src_7, coeffs_67); |
| |
| // Calculate scalar product for even- and odd-indices separately, |
| // increasing to 32-bit precision |
| const __m256i res_even_sum = _mm256_add_epi32( |
| _mm256_add_epi32(res_0, res_4), _mm256_add_epi32(res_2, res_6)); |
| const __m256i res_even = _mm256_srai_epi32( |
| _mm256_add_epi32(res_even_sum, round_const), conv_params->round_0); |
| |
| const __m256i res_odd_sum = _mm256_add_epi32( |
| _mm256_add_epi32(res_1, res_5), _mm256_add_epi32(res_3, res_7)); |
| const __m256i res_odd = _mm256_srai_epi32( |
| _mm256_add_epi32(res_odd_sum, round_const), conv_params->round_0); |
| |
| // Reduce to 16-bit precision and pack even- and odd-index results |
| // back into one register. The _mm256_packs_epi32 intrinsic returns |
| // a register with the pixels ordered as follows: |
| // [ 15 13 11 9 14 12 10 8 ] [ 7 5 3 1 6 4 2 0 ] |
| const __m256i res = _mm256_packs_epi32(res_even, res_odd); |
| const __m256i res_clamped = |
| _mm256_min_epi16(_mm256_max_epi16(res, clamp_low), clamp_high_ep); |
| |
| // Store in a temporary array |
| yy_storeu_256(temp + i * MAX_SB_SIZE + j, res_clamped); |
| } |
| } |
| } |
| |
| /* Vertical filter */ |
| { |
| const __m256i clamp_high = _mm256_set1_epi16((1 << bd) - 1); |
| |
| // coeffs [ f7 f6 f5 f4 f3 f2 f1 f0 ] |
| const __m128i coeffs_y = _mm_add_epi16(xx_loadu_128(filter_y), offset); |
| |
| // coeffs [ f3 f2 f3 f2 f1 f0 f1 f0 ] |
| const __m128i coeffs_0123 = _mm_unpacklo_epi32(coeffs_y, coeffs_y); |
| // coeffs [ f7 f6 f7 f6 f5 f4 f5 f4 ] |
| const __m128i coeffs_4567 = _mm_unpackhi_epi32(coeffs_y, coeffs_y); |
| |
| // coeffs [ f1 f0 f1 f0 f1 f0 f1 f0 ] |
| const __m128i coeffs_01_128 = _mm_unpacklo_epi64(coeffs_0123, coeffs_0123); |
| // coeffs [ f3 f2 f3 f2 f3 f2 f3 f2 ] |
| const __m128i coeffs_23_128 = _mm_unpackhi_epi64(coeffs_0123, coeffs_0123); |
| // coeffs [ f5 f4 f5 f4 f5 f4 f5 f4 ] |
| const __m128i coeffs_45_128 = _mm_unpacklo_epi64(coeffs_4567, coeffs_4567); |
| // coeffs [ f7 f6 f7 f6 f7 f6 f7 f6 ] |
| const __m128i coeffs_67_128 = _mm_unpackhi_epi64(coeffs_4567, coeffs_4567); |
| |
| // coeffs [ f1 f0 f1 f0 f1 f0 f1 f0 ][ f1 f0 f1 f0 f1 f0 f1 f0 ] |
| const __m256i coeffs_01 = yy_set_m128i(coeffs_01_128, coeffs_01_128); |
| // coeffs [ f3 f2 f3 f2 f3 f2 f3 f2 ][ f3 f2 f3 f2 f3 f2 f3 f2 ] |
| const __m256i coeffs_23 = yy_set_m128i(coeffs_23_128, coeffs_23_128); |
| // coeffs [ f5 f4 f5 f4 f5 f4 f5 f4 ][ f5 f4 f5 f4 f5 f4 f5 f4 ] |
| const __m256i coeffs_45 = yy_set_m128i(coeffs_45_128, coeffs_45_128); |
| // coeffs [ f7 f6 f7 f6 f7 f6 f7 f6 ][ f7 f6 f7 f6 f7 f6 f7 f6 ] |
| const __m256i coeffs_67 = yy_set_m128i(coeffs_67_128, coeffs_67_128); |
| |
| const __m256i round_const = |
| _mm256_set1_epi32((1 << (conv_params->round_1 - 1)) - |
| (1 << (bd + conv_params->round_1 - 1))); |
| |
| for (int i = 0; i < h; ++i) { |
| for (int j = 0; j < w; j += 16) { |
| const uint16_t *temp_ij = temp + i * MAX_SB_SIZE + j; |
| |
| // Load 16-bit data from the output of the horizontal filter in |
| // which the pixels are ordered as follows: |
| // [ 15 13 11 9 14 12 10 8 ] [ 7 5 3 1 6 4 2 0 ] |
| const __m256i data_0 = yy_loadu_256(temp_ij + 0 * MAX_SB_SIZE); |
| const __m256i data_1 = yy_loadu_256(temp_ij + 1 * MAX_SB_SIZE); |
| const __m256i data_2 = yy_loadu_256(temp_ij + 2 * MAX_SB_SIZE); |
| const __m256i data_3 = yy_loadu_256(temp_ij + 3 * MAX_SB_SIZE); |
| const __m256i data_4 = yy_loadu_256(temp_ij + 4 * MAX_SB_SIZE); |
| const __m256i data_5 = yy_loadu_256(temp_ij + 5 * MAX_SB_SIZE); |
| const __m256i data_6 = yy_loadu_256(temp_ij + 6 * MAX_SB_SIZE); |
| const __m256i data_7 = yy_loadu_256(temp_ij + 7 * MAX_SB_SIZE); |
| |
| // Filter the even-indices, increasing to 32-bit precision |
| const __m256i src_0 = _mm256_unpacklo_epi16(data_0, data_1); |
| const __m256i src_2 = _mm256_unpacklo_epi16(data_2, data_3); |
| const __m256i src_4 = _mm256_unpacklo_epi16(data_4, data_5); |
| const __m256i src_6 = _mm256_unpacklo_epi16(data_6, data_7); |
| |
| const __m256i res_0 = _mm256_madd_epi16(src_0, coeffs_01); |
| const __m256i res_2 = _mm256_madd_epi16(src_2, coeffs_23); |
| const __m256i res_4 = _mm256_madd_epi16(src_4, coeffs_45); |
| const __m256i res_6 = _mm256_madd_epi16(src_6, coeffs_67); |
| |
| const __m256i res_even = _mm256_add_epi32( |
| _mm256_add_epi32(res_0, res_2), _mm256_add_epi32(res_4, res_6)); |
| |
| // Filter the odd-indices, increasing to 32-bit precision |
| const __m256i src_1 = _mm256_unpackhi_epi16(data_0, data_1); |
| const __m256i src_3 = _mm256_unpackhi_epi16(data_2, data_3); |
| const __m256i src_5 = _mm256_unpackhi_epi16(data_4, data_5); |
| const __m256i src_7 = _mm256_unpackhi_epi16(data_6, data_7); |
| |
| const __m256i res_1 = _mm256_madd_epi16(src_1, coeffs_01); |
| const __m256i res_3 = _mm256_madd_epi16(src_3, coeffs_23); |
| const __m256i res_5 = _mm256_madd_epi16(src_5, coeffs_45); |
| const __m256i res_7 = _mm256_madd_epi16(src_7, coeffs_67); |
| |
| const __m256i res_odd = _mm256_add_epi32( |
| _mm256_add_epi32(res_1, res_3), _mm256_add_epi32(res_5, res_7)); |
| |
| // Pixels are currently in the following order: |
| // res_even order: [ 14 12 10 8 ] [ 6 4 2 0 ] |
| // res_odd order: [ 15 13 11 9 ] [ 7 5 3 1 ] |
| // |
| // Rearrange the pixels into the following order: |
| // res_lo order: [ 11 10 9 8 ] [ 3 2 1 0 ] |
| // res_hi order: [ 15 14 13 12 ] [ 7 6 5 4 ] |
| const __m256i res_lo = _mm256_unpacklo_epi32(res_even, res_odd); |
| const __m256i res_hi = _mm256_unpackhi_epi32(res_even, res_odd); |
| |
| const __m256i res_lo_round = _mm256_srai_epi32( |
| _mm256_add_epi32(res_lo, round_const), conv_params->round_1); |
| const __m256i res_hi_round = _mm256_srai_epi32( |
| _mm256_add_epi32(res_hi, round_const), conv_params->round_1); |
| |
| // Reduce to 16-bit precision and pack into the correct order: |
| // [ 15 14 13 12 11 10 9 8 ][ 7 6 5 4 3 2 1 0 ] |
| const __m256i res_16bit = |
| _mm256_packs_epi32(res_lo_round, res_hi_round); |
| const __m256i res_16bit_clamped = _mm256_min_epi16( |
| _mm256_max_epi16(res_16bit, clamp_low), clamp_high); |
| |
| // Store in the dst array |
| yy_storeu_256(dst + i * dst_stride + j, res_16bit_clamped); |
| } |
| } |
| } |
| } |