highbd_convolve_2d_avx2.c (8312B)
1 /* 2 * Copyright (c) 2017, Alliance for Open Media. All rights reserved. 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #include <immintrin.h> 13 #include <assert.h> 14 15 #include "config/av1_rtcd.h" 16 17 #include "aom_dsp/x86/convolve_avx2.h" 18 #include "aom_dsp/x86/synonyms.h" 19 #include "aom_dsp/aom_dsp_common.h" 20 #include "aom_dsp/aom_filter.h" 21 #include "av1/common/convolve.h" 22 23 void av1_highbd_convolve_2d_sr_ssse3( 24 const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride, int w, 25 int h, const InterpFilterParams *filter_params_x, 26 const InterpFilterParams *filter_params_y, const int subpel_x_qn, 27 const int subpel_y_qn, ConvolveParams *conv_params, int bd); 28 29 void av1_highbd_convolve_2d_sr_avx2(const uint16_t *src, int src_stride, 30 uint16_t *dst, int dst_stride, int w, int h, 31 const InterpFilterParams *filter_params_x, 32 const InterpFilterParams *filter_params_y, 33 const int subpel_x_qn, 34 const int subpel_y_qn, 35 ConvolveParams *conv_params, int bd) { 36 if (filter_params_x->taps == 12) { 37 av1_highbd_convolve_2d_sr_ssse3(src, src_stride, dst, dst_stride, w, h, 38 filter_params_x, filter_params_y, 39 subpel_x_qn, subpel_y_qn, conv_params, bd); 40 return; 41 } 42 43 DECLARE_ALIGNED(32, int16_t, im_block[(MAX_SB_SIZE + MAX_FILTER_TAP) * 8]); 44 int im_h = h + filter_params_y->taps - 1; 45 int im_stride = 8; 46 int i, j; 47 const int fo_vert = filter_params_y->taps / 2 - 1; 48 const int fo_horiz = filter_params_x->taps / 2 - 1; 49 const uint16_t *const src_ptr = src - fo_vert * src_stride - fo_horiz; 50 51 // Check that, even with 12-bit input, the intermediate values will fit 52 // into an unsigned 16-bit intermediate array. 53 assert(bd + FILTER_BITS + 2 - conv_params->round_0 <= 16); 54 55 __m256i s[8], coeffs_y[4], coeffs_x[4]; 56 57 const __m256i round_const_x = _mm256_set1_epi32( 58 ((1 << conv_params->round_0) >> 1) + (1 << (bd + FILTER_BITS - 1))); 59 const __m128i round_shift_x = _mm_cvtsi32_si128(conv_params->round_0); 60 61 const __m256i round_const_y = _mm256_set1_epi32( 62 ((1 << conv_params->round_1) >> 1) - 63 (1 << (bd + 2 * FILTER_BITS - conv_params->round_0 - 1))); 64 const __m128i round_shift_y = _mm_cvtsi32_si128(conv_params->round_1); 65 66 const int bits = 67 FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1; 68 const __m128i round_shift_bits = _mm_cvtsi32_si128(bits); 69 const __m256i round_const_bits = _mm256_set1_epi32((1 << bits) >> 1); 70 const __m256i clip_pixel = 71 _mm256_set1_epi16(bd == 10 ? 1023 : (bd == 12 ? 4095 : 255)); 72 const __m256i zero = _mm256_setzero_si256(); 73 74 prepare_coeffs(filter_params_x, subpel_x_qn, coeffs_x); 75 prepare_coeffs(filter_params_y, subpel_y_qn, coeffs_y); 76 77 for (j = 0; j < w; j += 8) { 78 /* Horizontal filter */ 79 { 80 for (i = 0; i < im_h; i += 2) { 81 const __m256i row0 = 82 _mm256_loadu_si256((__m256i *)&src_ptr[i * src_stride + j]); 83 __m256i row1 = _mm256_setzero_si256(); 84 if (i + 1 < im_h) 85 row1 = 86 _mm256_loadu_si256((__m256i *)&src_ptr[(i + 1) * src_stride + j]); 87 88 const __m256i r0 = _mm256_permute2x128_si256(row0, row1, 0x20); 89 const __m256i r1 = _mm256_permute2x128_si256(row0, row1, 0x31); 90 91 // even pixels 92 s[0] = _mm256_alignr_epi8(r1, r0, 0); 93 s[1] = _mm256_alignr_epi8(r1, r0, 4); 94 s[2] = _mm256_alignr_epi8(r1, r0, 8); 95 s[3] = _mm256_alignr_epi8(r1, r0, 12); 96 97 __m256i res_even = convolve(s, coeffs_x); 98 res_even = _mm256_sra_epi32(_mm256_add_epi32(res_even, round_const_x), 99 round_shift_x); 100 101 // odd pixels 102 s[0] = _mm256_alignr_epi8(r1, r0, 2); 103 s[1] = _mm256_alignr_epi8(r1, r0, 6); 104 s[2] = _mm256_alignr_epi8(r1, r0, 10); 105 s[3] = _mm256_alignr_epi8(r1, r0, 14); 106 107 __m256i res_odd = convolve(s, coeffs_x); 108 res_odd = _mm256_sra_epi32(_mm256_add_epi32(res_odd, round_const_x), 109 round_shift_x); 110 111 __m256i res_even1 = _mm256_packs_epi32(res_even, res_even); 112 __m256i res_odd1 = _mm256_packs_epi32(res_odd, res_odd); 113 __m256i res = _mm256_unpacklo_epi16(res_even1, res_odd1); 114 115 _mm256_store_si256((__m256i *)&im_block[i * im_stride], res); 116 } 117 } 118 119 /* Vertical filter */ 120 { 121 __m256i s0 = _mm256_loadu_si256((__m256i *)(im_block + 0 * im_stride)); 122 __m256i s1 = _mm256_loadu_si256((__m256i *)(im_block + 1 * im_stride)); 123 __m256i s2 = _mm256_loadu_si256((__m256i *)(im_block + 2 * im_stride)); 124 __m256i s3 = _mm256_loadu_si256((__m256i *)(im_block + 3 * im_stride)); 125 __m256i s4 = _mm256_loadu_si256((__m256i *)(im_block + 4 * im_stride)); 126 __m256i s5 = _mm256_loadu_si256((__m256i *)(im_block + 5 * im_stride)); 127 128 s[0] = _mm256_unpacklo_epi16(s0, s1); 129 s[1] = _mm256_unpacklo_epi16(s2, s3); 130 s[2] = _mm256_unpacklo_epi16(s4, s5); 131 132 s[4] = _mm256_unpackhi_epi16(s0, s1); 133 s[5] = _mm256_unpackhi_epi16(s2, s3); 134 s[6] = _mm256_unpackhi_epi16(s4, s5); 135 136 for (i = 0; i < h; i += 2) { 137 const int16_t *data = &im_block[i * im_stride]; 138 139 const __m256i s6 = 140 _mm256_loadu_si256((__m256i *)(data + 6 * im_stride)); 141 const __m256i s7 = 142 _mm256_loadu_si256((__m256i *)(data + 7 * im_stride)); 143 144 s[3] = _mm256_unpacklo_epi16(s6, s7); 145 s[7] = _mm256_unpackhi_epi16(s6, s7); 146 147 const __m256i res_a = convolve(s, coeffs_y); 148 __m256i res_a_round = _mm256_sra_epi32( 149 _mm256_add_epi32(res_a, round_const_y), round_shift_y); 150 151 res_a_round = _mm256_sra_epi32( 152 _mm256_add_epi32(res_a_round, round_const_bits), round_shift_bits); 153 154 if (w - j > 4) { 155 const __m256i res_b = convolve(s + 4, coeffs_y); 156 __m256i res_b_round = _mm256_sra_epi32( 157 _mm256_add_epi32(res_b, round_const_y), round_shift_y); 158 res_b_round = 159 _mm256_sra_epi32(_mm256_add_epi32(res_b_round, round_const_bits), 160 round_shift_bits); 161 162 __m256i res_16bit = _mm256_packs_epi32(res_a_round, res_b_round); 163 res_16bit = _mm256_min_epi16(res_16bit, clip_pixel); 164 res_16bit = _mm256_max_epi16(res_16bit, zero); 165 166 _mm_storeu_si128((__m128i *)&dst[i * dst_stride + j], 167 _mm256_castsi256_si128(res_16bit)); 168 _mm_storeu_si128((__m128i *)&dst[i * dst_stride + j + dst_stride], 169 _mm256_extracti128_si256(res_16bit, 1)); 170 } else if (w == 4) { 171 res_a_round = _mm256_packs_epi32(res_a_round, res_a_round); 172 res_a_round = _mm256_min_epi16(res_a_round, clip_pixel); 173 res_a_round = _mm256_max_epi16(res_a_round, zero); 174 175 _mm_storel_epi64((__m128i *)&dst[i * dst_stride + j], 176 _mm256_castsi256_si128(res_a_round)); 177 _mm_storel_epi64((__m128i *)&dst[i * dst_stride + j + dst_stride], 178 _mm256_extracti128_si256(res_a_round, 1)); 179 } else { 180 res_a_round = _mm256_packs_epi32(res_a_round, res_a_round); 181 res_a_round = _mm256_min_epi16(res_a_round, clip_pixel); 182 res_a_round = _mm256_max_epi16(res_a_round, zero); 183 184 xx_storel_32(&dst[i * dst_stride + j], 185 _mm256_castsi256_si128(res_a_round)); 186 xx_storel_32(&dst[i * dst_stride + j + dst_stride], 187 _mm256_extracti128_si256(res_a_round, 1)); 188 } 189 190 s[0] = s[1]; 191 s[1] = s[2]; 192 s[2] = s[3]; 193 194 s[4] = s[5]; 195 s[5] = s[6]; 196 s[6] = s[7]; 197 } 198 } 199 } 200 }