reconinter_sse4.c (6233B)
1 /* 2 * Copyright (c) 2018, 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 <emmintrin.h> // SSE2 13 #include <smmintrin.h> /* SSE4.1 */ 14 15 #include "aom/aom_integer.h" 16 #include "aom_dsp/blend.h" 17 #include "av1/common/blockd.h" 18 #include "config/av1_rtcd.h" 19 20 static inline __m128i calc_mask(const __m128i mask_base, const __m128i s0, 21 const __m128i s1) { 22 const __m128i diff = _mm_abs_epi16(_mm_sub_epi16(s0, s1)); 23 return _mm_abs_epi16(_mm_add_epi16(mask_base, _mm_srli_epi16(diff, 4))); 24 // clamp(diff, 0, 64) can be skiped for diff is always in the range ( 38, 54) 25 } 26 27 void av1_build_compound_diffwtd_mask_sse4_1(uint8_t *mask, 28 DIFFWTD_MASK_TYPE mask_type, 29 const uint8_t *src0, int stride0, 30 const uint8_t *src1, int stride1, 31 int h, int w) { 32 const int mb = (mask_type == DIFFWTD_38_INV) ? AOM_BLEND_A64_MAX_ALPHA : 0; 33 const __m128i mask_base = _mm_set1_epi16(38 - mb); 34 int i = 0; 35 if (4 == w) { 36 do { 37 const __m128i s0A = _mm_cvtsi32_si128(*(int *)src0); 38 const __m128i s0B = _mm_cvtsi32_si128(*(int *)(src0 + stride0)); 39 const __m128i s0AB = _mm_unpacklo_epi32(s0A, s0B); 40 const __m128i s0 = _mm_cvtepu8_epi16(s0AB); 41 42 const __m128i s1A = _mm_cvtsi32_si128(*(int *)src1); 43 const __m128i s1B = _mm_cvtsi32_si128(*(int *)(src1 + stride1)); 44 const __m128i s1AB = _mm_unpacklo_epi32(s1A, s1B); 45 const __m128i s1 = _mm_cvtepu8_epi16(s1AB); 46 47 const __m128i m16 = calc_mask(mask_base, s0, s1); 48 const __m128i m8 = _mm_packus_epi16(m16, m16); 49 50 *(int *)mask = _mm_cvtsi128_si32(m8); 51 *(int *)(mask + w) = _mm_extract_epi32(m8, 1); 52 src0 += (stride0 << 1); 53 src1 += (stride1 << 1); 54 mask += 8; 55 i += 2; 56 } while (i < h); 57 } else if (8 == w) { 58 do { 59 __m128i s0 = _mm_loadl_epi64((__m128i const *)src0); 60 __m128i s1 = _mm_loadl_epi64((__m128i const *)src1); 61 s0 = _mm_cvtepu8_epi16(s0); 62 s1 = _mm_cvtepu8_epi16(s1); 63 const __m128i m16 = calc_mask(mask_base, s0, s1); 64 const __m128i m8 = _mm_packus_epi16(m16, m16); 65 _mm_storel_epi64((__m128i *)mask, m8); 66 src0 += stride0; 67 src1 += stride1; 68 mask += 8; 69 i += 1; 70 } while (i < h); 71 } else { 72 const __m128i zero = _mm_setzero_si128(); 73 do { 74 int j = 0; 75 do { 76 const __m128i s0 = _mm_load_si128((__m128i const *)(src0 + j)); 77 const __m128i s1 = _mm_load_si128((__m128i const *)(src1 + j)); 78 const __m128i s0L = _mm_cvtepu8_epi16(s0); 79 const __m128i s1L = _mm_cvtepu8_epi16(s1); 80 const __m128i s0H = _mm_unpackhi_epi8(s0, zero); 81 const __m128i s1H = _mm_unpackhi_epi8(s1, zero); 82 83 const __m128i m16L = calc_mask(mask_base, s0L, s1L); 84 const __m128i m16H = calc_mask(mask_base, s0H, s1H); 85 86 const __m128i m8 = _mm_packus_epi16(m16L, m16H); 87 _mm_store_si128((__m128i *)(mask + j), m8); 88 j += 16; 89 } while (j < w); 90 src0 += stride0; 91 src1 += stride1; 92 mask += w; 93 i += 1; 94 } while (i < h); 95 } 96 } 97 98 void av1_build_compound_diffwtd_mask_d16_sse4_1( 99 uint8_t *mask, DIFFWTD_MASK_TYPE mask_type, const CONV_BUF_TYPE *src0, 100 int src0_stride, const CONV_BUF_TYPE *src1, int src1_stride, int h, int w, 101 ConvolveParams *conv_params, int bd) { 102 const int which_inverse = (mask_type == DIFFWTD_38) ? 0 : 1; 103 const int mask_base = 38; 104 int round = 105 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1 + (bd - 8); 106 const __m128i round_const = _mm_set1_epi16((1 << round) >> 1); 107 const __m128i mask_base_16 = _mm_set1_epi16(mask_base); 108 const __m128i clip_diff = _mm_set1_epi16(AOM_BLEND_A64_MAX_ALPHA); 109 const __m128i add_const = 110 _mm_set1_epi16((which_inverse ? AOM_BLEND_A64_MAX_ALPHA : 0)); 111 const __m128i add_sign = _mm_set1_epi16((which_inverse ? -1 : 1)); 112 113 int i, j; 114 // When rounding constant is added, there is a possibility of overflow. 115 // However that much precision is not required. Code should very well work for 116 // other values of DIFF_FACTOR_LOG2 and AOM_BLEND_A64_MAX_ALPHA as well. But 117 // there is a possibility of corner case bugs. 118 assert(DIFF_FACTOR_LOG2 == 4); 119 assert(AOM_BLEND_A64_MAX_ALPHA == 64); 120 for (i = 0; i < h; ++i) { 121 for (j = 0; j < w; j += 8) { 122 const __m128i data_src0 = 123 _mm_loadu_si128((__m128i *)&src0[(i * src0_stride) + j]); 124 const __m128i data_src1 = 125 _mm_loadu_si128((__m128i *)&src1[(i * src1_stride) + j]); 126 127 const __m128i diffa = _mm_subs_epu16(data_src0, data_src1); 128 const __m128i diffb = _mm_subs_epu16(data_src1, data_src0); 129 const __m128i diff = _mm_max_epu16(diffa, diffb); 130 const __m128i diff_round = 131 _mm_srli_epi16(_mm_adds_epu16(diff, round_const), round); 132 const __m128i diff_factor = _mm_srli_epi16(diff_round, DIFF_FACTOR_LOG2); 133 const __m128i diff_mask = _mm_adds_epi16(diff_factor, mask_base_16); 134 __m128i diff_clamp = _mm_min_epi16(diff_mask, clip_diff); 135 // clamp to 0 can be skipped since we are using add and saturate 136 // instruction 137 138 const __m128i diff_sign = _mm_sign_epi16(diff_clamp, add_sign); 139 const __m128i diff_const_16 = _mm_add_epi16(diff_sign, add_const); 140 141 // 8 bit conversion and saturation to uint8 142 const __m128i res_8 = _mm_packus_epi16(diff_const_16, diff_const_16); 143 144 // Store values into the destination buffer 145 __m128i *const dst = (__m128i *)&mask[i * w + j]; 146 147 if ((w - j) > 4) { 148 _mm_storel_epi64(dst, res_8); 149 } else { // w==4 150 *(int *)dst = _mm_cvtsi128_si32(res_8); 151 } 152 } 153 } 154 }