wiener_convolve_sse2.c (8848B)
1 /* 2 * Copyright (c) 2016, 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> 13 #include <assert.h> 14 15 #include "config/av1_rtcd.h" 16 17 #include "av1/common/convolve.h" 18 #include "aom_dsp/aom_dsp_common.h" 19 #include "aom_dsp/aom_filter.h" 20 21 void av1_wiener_convolve_add_src_sse2(const uint8_t *src, ptrdiff_t src_stride, 22 uint8_t *dst, ptrdiff_t dst_stride, 23 const int16_t *filter_x, int x_step_q4, 24 const int16_t *filter_y, int y_step_q4, 25 int w, int h, 26 const WienerConvolveParams *conv_params) { 27 const int bd = 8; 28 assert(x_step_q4 == 16 && y_step_q4 == 16); 29 assert(!(w & 7)); 30 (void)x_step_q4; 31 (void)y_step_q4; 32 33 DECLARE_ALIGNED(16, uint16_t, 34 temp[(MAX_SB_SIZE + SUBPEL_TAPS - 1) * MAX_SB_SIZE]); 35 int intermediate_height = h + SUBPEL_TAPS - 2; 36 memset(temp + (intermediate_height * MAX_SB_SIZE), 0, MAX_SB_SIZE); 37 int i, j; 38 const int center_tap = ((SUBPEL_TAPS - 1) / 2); 39 const uint8_t *const src_ptr = src - center_tap * src_stride - center_tap; 40 41 const __m128i zero = _mm_setzero_si128(); 42 // Add an offset to account for the "add_src" part of the convolve function. 43 const __m128i offset = _mm_insert_epi16(zero, 1 << FILTER_BITS, 3); 44 45 /* Horizontal filter */ 46 { 47 const __m128i coeffs_x = 48 _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_x), offset); 49 50 // coeffs 0 1 0 1 2 3 2 3 51 const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_x, coeffs_x); 52 // coeffs 4 5 4 5 6 7 6 7 53 const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_x, coeffs_x); 54 55 // coeffs 0 1 0 1 0 1 0 1 56 const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0); 57 // coeffs 2 3 2 3 2 3 2 3 58 const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0); 59 // coeffs 4 5 4 5 4 5 4 5 60 const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1); 61 // coeffs 6 7 6 7 6 7 6 7 62 const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1); 63 64 const __m128i round_const = _mm_set1_epi32( 65 (1 << (conv_params->round_0 - 1)) + (1 << (bd + FILTER_BITS - 1))); 66 67 for (i = 0; i < intermediate_height; ++i) { 68 for (j = 0; j < w; j += 8) { 69 const __m128i data = 70 _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j]); 71 72 // Filter even-index pixels 73 const __m128i src_0 = _mm_unpacklo_epi8(data, zero); 74 const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01); 75 const __m128i src_2 = _mm_unpacklo_epi8(_mm_srli_si128(data, 2), zero); 76 const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23); 77 const __m128i src_4 = _mm_unpacklo_epi8(_mm_srli_si128(data, 4), zero); 78 const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45); 79 const __m128i src_6 = _mm_unpacklo_epi8(_mm_srli_si128(data, 6), zero); 80 const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67); 81 82 __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_4), 83 _mm_add_epi32(res_2, res_6)); 84 res_even = _mm_srai_epi32(_mm_add_epi32(res_even, round_const), 85 conv_params->round_0); 86 87 // Filter odd-index pixels 88 const __m128i src_1 = _mm_unpacklo_epi8(_mm_srli_si128(data, 1), zero); 89 const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01); 90 const __m128i src_3 = _mm_unpacklo_epi8(_mm_srli_si128(data, 3), zero); 91 const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23); 92 const __m128i src_5 = _mm_unpacklo_epi8(_mm_srli_si128(data, 5), zero); 93 const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45); 94 const __m128i src_7 = _mm_unpacklo_epi8(_mm_srli_si128(data, 7), zero); 95 const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67); 96 97 __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_5), 98 _mm_add_epi32(res_3, res_7)); 99 res_odd = _mm_srai_epi32(_mm_add_epi32(res_odd, round_const), 100 conv_params->round_0); 101 102 // Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7 103 __m128i res = _mm_packs_epi32(res_even, res_odd); 104 res = _mm_min_epi16( 105 _mm_max_epi16(res, zero), 106 _mm_set1_epi16(WIENER_CLAMP_LIMIT(conv_params->round_0, bd) - 1)); 107 _mm_storeu_si128((__m128i *)&temp[i * MAX_SB_SIZE + j], res); 108 } 109 } 110 } 111 112 /* Vertical filter */ 113 { 114 const __m128i coeffs_y = 115 _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_y), offset); 116 117 // coeffs 0 1 0 1 2 3 2 3 118 const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_y, coeffs_y); 119 // coeffs 4 5 4 5 6 7 6 7 120 const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_y, coeffs_y); 121 122 // coeffs 0 1 0 1 0 1 0 1 123 const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0); 124 // coeffs 2 3 2 3 2 3 2 3 125 const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0); 126 // coeffs 4 5 4 5 4 5 4 5 127 const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1); 128 // coeffs 6 7 6 7 6 7 6 7 129 const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1); 130 131 const __m128i round_const = 132 _mm_set1_epi32((1 << (conv_params->round_1 - 1)) - 133 (1 << (bd + conv_params->round_1 - 1))); 134 135 for (i = 0; i < h; ++i) { 136 for (j = 0; j < w; j += 8) { 137 // Filter even-index pixels 138 const uint16_t *data = &temp[i * MAX_SB_SIZE + j]; 139 const __m128i src_0 = 140 _mm_unpacklo_epi16(*(__m128i *)(data + 0 * MAX_SB_SIZE), 141 *(__m128i *)(data + 1 * MAX_SB_SIZE)); 142 const __m128i src_2 = 143 _mm_unpacklo_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE), 144 *(__m128i *)(data + 3 * MAX_SB_SIZE)); 145 const __m128i src_4 = 146 _mm_unpacklo_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE), 147 *(__m128i *)(data + 5 * MAX_SB_SIZE)); 148 const __m128i src_6 = 149 _mm_unpacklo_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE), 150 *(__m128i *)(data + 7 * MAX_SB_SIZE)); 151 152 const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01); 153 const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23); 154 const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45); 155 const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67); 156 157 const __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2), 158 _mm_add_epi32(res_4, res_6)); 159 160 // Filter odd-index pixels 161 const __m128i src_1 = 162 _mm_unpackhi_epi16(*(__m128i *)(data + 0 * MAX_SB_SIZE), 163 *(__m128i *)(data + 1 * MAX_SB_SIZE)); 164 const __m128i src_3 = 165 _mm_unpackhi_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE), 166 *(__m128i *)(data + 3 * MAX_SB_SIZE)); 167 const __m128i src_5 = 168 _mm_unpackhi_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE), 169 *(__m128i *)(data + 5 * MAX_SB_SIZE)); 170 const __m128i src_7 = 171 _mm_unpackhi_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE), 172 *(__m128i *)(data + 7 * MAX_SB_SIZE)); 173 174 const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01); 175 const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23); 176 const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45); 177 const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67); 178 179 const __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3), 180 _mm_add_epi32(res_5, res_7)); 181 182 // Rearrange pixels back into the order 0 ... 7 183 const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd); 184 const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd); 185 186 const __m128i res_lo_round = _mm_srai_epi32( 187 _mm_add_epi32(res_lo, round_const), conv_params->round_1); 188 const __m128i res_hi_round = _mm_srai_epi32( 189 _mm_add_epi32(res_hi, round_const), conv_params->round_1); 190 191 const __m128i res_16bit = _mm_packs_epi32(res_lo_round, res_hi_round); 192 __m128i res_8bit = _mm_packus_epi16(res_16bit, res_16bit); 193 194 __m128i *const p = (__m128i *)&dst[i * dst_stride + j]; 195 _mm_storel_epi64(p, res_8bit); 196 } 197 } 198 } 199 }