1 /* 2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 #include <immintrin.h> // AVX2 11 #include "./vpx_dsp_rtcd.h" 12 #include "vpx/vpx_integer.h" 13 14 void vpx_sad32x32x4d_avx2(const uint8_t *src, 15 int src_stride, 16 const uint8_t *const ref[4], 17 int ref_stride, 18 uint32_t res[4]) { 19 __m256i src_reg, ref0_reg, ref1_reg, ref2_reg, ref3_reg; 20 __m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3; 21 __m256i sum_mlow, sum_mhigh; 22 int i; 23 const uint8_t *ref0, *ref1, *ref2, *ref3; 24 25 ref0 = ref[0]; 26 ref1 = ref[1]; 27 ref2 = ref[2]; 28 ref3 = ref[3]; 29 sum_ref0 = _mm256_set1_epi16(0); 30 sum_ref1 = _mm256_set1_epi16(0); 31 sum_ref2 = _mm256_set1_epi16(0); 32 sum_ref3 = _mm256_set1_epi16(0); 33 for (i = 0; i < 32 ; i++) { 34 // load src and all refs 35 src_reg = _mm256_loadu_si256((const __m256i *)src); 36 ref0_reg = _mm256_loadu_si256((const __m256i *)ref0); 37 ref1_reg = _mm256_loadu_si256((const __m256i *)ref1); 38 ref2_reg = _mm256_loadu_si256((const __m256i *)ref2); 39 ref3_reg = _mm256_loadu_si256((const __m256i *)ref3); 40 // sum of the absolute differences between every ref-i to src 41 ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg); 42 ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg); 43 ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg); 44 ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg); 45 // sum every ref-i 46 sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg); 47 sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg); 48 sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg); 49 sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg); 50 51 src+= src_stride; 52 ref0+= ref_stride; 53 ref1+= ref_stride; 54 ref2+= ref_stride; 55 ref3+= ref_stride; 56 } 57 { 58 __m128i sum; 59 // in sum_ref-i the result is saved in the first 4 bytes 60 // the other 4 bytes are zeroed. 61 // sum_ref1 and sum_ref3 are shifted left by 4 bytes 62 sum_ref1 = _mm256_slli_si256(sum_ref1, 4); 63 sum_ref3 = _mm256_slli_si256(sum_ref3, 4); 64 65 // merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3 66 sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1); 67 sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3); 68 69 // merge every 64 bit from each sum_ref-i 70 sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2); 71 sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2); 72 73 // add the low 64 bit to the high 64 bit 74 sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh); 75 76 // add the low 128 bit to the high 128 bit 77 sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow), 78 _mm256_extractf128_si256(sum_mlow, 1)); 79 80 _mm_storeu_si128((__m128i *)(res), sum); 81 } 82 } 83 84 void vpx_sad64x64x4d_avx2(const uint8_t *src, 85 int src_stride, 86 const uint8_t *const ref[4], 87 int ref_stride, 88 uint32_t res[4]) { 89 __m256i src_reg, srcnext_reg, ref0_reg, ref0next_reg; 90 __m256i ref1_reg, ref1next_reg, ref2_reg, ref2next_reg; 91 __m256i ref3_reg, ref3next_reg; 92 __m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3; 93 __m256i sum_mlow, sum_mhigh; 94 int i; 95 const uint8_t *ref0, *ref1, *ref2, *ref3; 96 97 ref0 = ref[0]; 98 ref1 = ref[1]; 99 ref2 = ref[2]; 100 ref3 = ref[3]; 101 sum_ref0 = _mm256_set1_epi16(0); 102 sum_ref1 = _mm256_set1_epi16(0); 103 sum_ref2 = _mm256_set1_epi16(0); 104 sum_ref3 = _mm256_set1_epi16(0); 105 for (i = 0; i < 64 ; i++) { 106 // load 64 bytes from src and all refs 107 src_reg = _mm256_loadu_si256((const __m256i *)src); 108 srcnext_reg = _mm256_loadu_si256((const __m256i *)(src + 32)); 109 ref0_reg = _mm256_loadu_si256((const __m256i *)ref0); 110 ref0next_reg = _mm256_loadu_si256((const __m256i *)(ref0 + 32)); 111 ref1_reg = _mm256_loadu_si256((const __m256i *)ref1); 112 ref1next_reg = _mm256_loadu_si256((const __m256i *)(ref1 + 32)); 113 ref2_reg = _mm256_loadu_si256((const __m256i *)ref2); 114 ref2next_reg = _mm256_loadu_si256((const __m256i *)(ref2 + 32)); 115 ref3_reg = _mm256_loadu_si256((const __m256i *)ref3); 116 ref3next_reg = _mm256_loadu_si256((const __m256i *)(ref3 + 32)); 117 // sum of the absolute differences between every ref-i to src 118 ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg); 119 ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg); 120 ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg); 121 ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg); 122 ref0next_reg = _mm256_sad_epu8(ref0next_reg, srcnext_reg); 123 ref1next_reg = _mm256_sad_epu8(ref1next_reg, srcnext_reg); 124 ref2next_reg = _mm256_sad_epu8(ref2next_reg, srcnext_reg); 125 ref3next_reg = _mm256_sad_epu8(ref3next_reg, srcnext_reg); 126 127 // sum every ref-i 128 sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg); 129 sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg); 130 sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg); 131 sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg); 132 sum_ref0 = _mm256_add_epi32(sum_ref0, ref0next_reg); 133 sum_ref1 = _mm256_add_epi32(sum_ref1, ref1next_reg); 134 sum_ref2 = _mm256_add_epi32(sum_ref2, ref2next_reg); 135 sum_ref3 = _mm256_add_epi32(sum_ref3, ref3next_reg); 136 src+= src_stride; 137 ref0+= ref_stride; 138 ref1+= ref_stride; 139 ref2+= ref_stride; 140 ref3+= ref_stride; 141 } 142 { 143 __m128i sum; 144 145 // in sum_ref-i the result is saved in the first 4 bytes 146 // the other 4 bytes are zeroed. 147 // sum_ref1 and sum_ref3 are shifted left by 4 bytes 148 sum_ref1 = _mm256_slli_si256(sum_ref1, 4); 149 sum_ref3 = _mm256_slli_si256(sum_ref3, 4); 150 151 // merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3 152 sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1); 153 sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3); 154 155 // merge every 64 bit from each sum_ref-i 156 sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2); 157 sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2); 158 159 // add the low 64 bit to the high 64 bit 160 sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh); 161 162 // add the low 128 bit to the high 128 bit 163 sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow), 164 _mm256_extractf128_si256(sum_mlow, 1)); 165 166 _mm_storeu_si128((__m128i *)(res), sum); 167 } 168 } 169
