/src/aom/av1/common/x86/wiener_convolve_sse2.c
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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 | 0 | const WienerConvolveParams *conv_params) { |
27 | 0 | const int bd = 8; |
28 | 0 | assert(x_step_q4 == 16 && y_step_q4 == 16); |
29 | 0 | assert(!(w & 7)); |
30 | 0 | (void)x_step_q4; |
31 | 0 | (void)y_step_q4; |
32 | |
|
33 | 0 | DECLARE_ALIGNED(16, uint16_t, |
34 | 0 | temp[(MAX_SB_SIZE + SUBPEL_TAPS - 1) * MAX_SB_SIZE]); |
35 | 0 | int intermediate_height = h + SUBPEL_TAPS - 2; |
36 | 0 | memset(temp + (intermediate_height * MAX_SB_SIZE), 0, MAX_SB_SIZE); |
37 | 0 | int i, j; |
38 | 0 | const int center_tap = ((SUBPEL_TAPS - 1) / 2); |
39 | 0 | const uint8_t *const src_ptr = src - center_tap * src_stride - center_tap; |
40 | |
|
41 | 0 | const __m128i zero = _mm_setzero_si128(); |
42 | | // Add an offset to account for the "add_src" part of the convolve function. |
43 | 0 | const __m128i offset = _mm_insert_epi16(zero, 1 << FILTER_BITS, 3); |
44 | | |
45 | | /* Horizontal filter */ |
46 | 0 | { |
47 | 0 | const __m128i coeffs_x = |
48 | 0 | _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_x), offset); |
49 | | |
50 | | // coeffs 0 1 0 1 2 3 2 3 |
51 | 0 | const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_x, coeffs_x); |
52 | | // coeffs 4 5 4 5 6 7 6 7 |
53 | 0 | const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_x, coeffs_x); |
54 | | |
55 | | // coeffs 0 1 0 1 0 1 0 1 |
56 | 0 | const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0); |
57 | | // coeffs 2 3 2 3 2 3 2 3 |
58 | 0 | const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0); |
59 | | // coeffs 4 5 4 5 4 5 4 5 |
60 | 0 | const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1); |
61 | | // coeffs 6 7 6 7 6 7 6 7 |
62 | 0 | const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1); |
63 | |
|
64 | 0 | const __m128i round_const = _mm_set1_epi32( |
65 | 0 | (1 << (conv_params->round_0 - 1)) + (1 << (bd + FILTER_BITS - 1))); |
66 | |
|
67 | 0 | for (i = 0; i < intermediate_height; ++i) { |
68 | 0 | for (j = 0; j < w; j += 8) { |
69 | 0 | const __m128i data = |
70 | 0 | _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j]); |
71 | | |
72 | | // Filter even-index pixels |
73 | 0 | const __m128i src_0 = _mm_unpacklo_epi8(data, zero); |
74 | 0 | const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01); |
75 | 0 | const __m128i src_2 = _mm_unpacklo_epi8(_mm_srli_si128(data, 2), zero); |
76 | 0 | const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23); |
77 | 0 | const __m128i src_4 = _mm_unpacklo_epi8(_mm_srli_si128(data, 4), zero); |
78 | 0 | const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45); |
79 | 0 | const __m128i src_6 = _mm_unpacklo_epi8(_mm_srli_si128(data, 6), zero); |
80 | 0 | const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67); |
81 | |
|
82 | 0 | __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_4), |
83 | 0 | _mm_add_epi32(res_2, res_6)); |
84 | 0 | res_even = _mm_srai_epi32(_mm_add_epi32(res_even, round_const), |
85 | 0 | conv_params->round_0); |
86 | | |
87 | | // Filter odd-index pixels |
88 | 0 | const __m128i src_1 = _mm_unpacklo_epi8(_mm_srli_si128(data, 1), zero); |
89 | 0 | const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01); |
90 | 0 | const __m128i src_3 = _mm_unpacklo_epi8(_mm_srli_si128(data, 3), zero); |
91 | 0 | const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23); |
92 | 0 | const __m128i src_5 = _mm_unpacklo_epi8(_mm_srli_si128(data, 5), zero); |
93 | 0 | const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45); |
94 | 0 | const __m128i src_7 = _mm_unpacklo_epi8(_mm_srli_si128(data, 7), zero); |
95 | 0 | const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67); |
96 | |
|
97 | 0 | __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_5), |
98 | 0 | _mm_add_epi32(res_3, res_7)); |
99 | 0 | res_odd = _mm_srai_epi32(_mm_add_epi32(res_odd, round_const), |
100 | 0 | conv_params->round_0); |
101 | | |
102 | | // Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7 |
103 | 0 | __m128i res = _mm_packs_epi32(res_even, res_odd); |
104 | 0 | res = _mm_min_epi16( |
105 | 0 | _mm_max_epi16(res, zero), |
106 | 0 | _mm_set1_epi16(WIENER_CLAMP_LIMIT(conv_params->round_0, bd) - 1)); |
107 | 0 | _mm_storeu_si128((__m128i *)&temp[i * MAX_SB_SIZE + j], res); |
108 | 0 | } |
109 | 0 | } |
110 | 0 | } |
111 | | |
112 | | /* Vertical filter */ |
113 | 0 | { |
114 | 0 | const __m128i coeffs_y = |
115 | 0 | _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_y), offset); |
116 | | |
117 | | // coeffs 0 1 0 1 2 3 2 3 |
118 | 0 | const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_y, coeffs_y); |
119 | | // coeffs 4 5 4 5 6 7 6 7 |
120 | 0 | const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_y, coeffs_y); |
121 | | |
122 | | // coeffs 0 1 0 1 0 1 0 1 |
123 | 0 | const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0); |
124 | | // coeffs 2 3 2 3 2 3 2 3 |
125 | 0 | const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0); |
126 | | // coeffs 4 5 4 5 4 5 4 5 |
127 | 0 | const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1); |
128 | | // coeffs 6 7 6 7 6 7 6 7 |
129 | 0 | const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1); |
130 | |
|
131 | 0 | const __m128i round_const = |
132 | 0 | _mm_set1_epi32((1 << (conv_params->round_1 - 1)) - |
133 | 0 | (1 << (bd + conv_params->round_1 - 1))); |
134 | |
|
135 | 0 | for (i = 0; i < h; ++i) { |
136 | 0 | for (j = 0; j < w; j += 8) { |
137 | | // Filter even-index pixels |
138 | 0 | const uint16_t *data = &temp[i * MAX_SB_SIZE + j]; |
139 | 0 | const __m128i src_0 = |
140 | 0 | _mm_unpacklo_epi16(*(__m128i *)(data + 0 * MAX_SB_SIZE), |
141 | 0 | *(__m128i *)(data + 1 * MAX_SB_SIZE)); |
142 | 0 | const __m128i src_2 = |
143 | 0 | _mm_unpacklo_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE), |
144 | 0 | *(__m128i *)(data + 3 * MAX_SB_SIZE)); |
145 | 0 | const __m128i src_4 = |
146 | 0 | _mm_unpacklo_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE), |
147 | 0 | *(__m128i *)(data + 5 * MAX_SB_SIZE)); |
148 | 0 | const __m128i src_6 = |
149 | 0 | _mm_unpacklo_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE), |
150 | 0 | *(__m128i *)(data + 7 * MAX_SB_SIZE)); |
151 | |
|
152 | 0 | const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01); |
153 | 0 | const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23); |
154 | 0 | const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45); |
155 | 0 | const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67); |
156 | |
|
157 | 0 | const __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2), |
158 | 0 | _mm_add_epi32(res_4, res_6)); |
159 | | |
160 | | // Filter odd-index pixels |
161 | 0 | const __m128i src_1 = |
162 | 0 | _mm_unpackhi_epi16(*(__m128i *)(data + 0 * MAX_SB_SIZE), |
163 | 0 | *(__m128i *)(data + 1 * MAX_SB_SIZE)); |
164 | 0 | const __m128i src_3 = |
165 | 0 | _mm_unpackhi_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE), |
166 | 0 | *(__m128i *)(data + 3 * MAX_SB_SIZE)); |
167 | 0 | const __m128i src_5 = |
168 | 0 | _mm_unpackhi_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE), |
169 | 0 | *(__m128i *)(data + 5 * MAX_SB_SIZE)); |
170 | 0 | const __m128i src_7 = |
171 | 0 | _mm_unpackhi_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE), |
172 | 0 | *(__m128i *)(data + 7 * MAX_SB_SIZE)); |
173 | |
|
174 | 0 | const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01); |
175 | 0 | const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23); |
176 | 0 | const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45); |
177 | 0 | const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67); |
178 | |
|
179 | 0 | const __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3), |
180 | 0 | _mm_add_epi32(res_5, res_7)); |
181 | | |
182 | | // Rearrange pixels back into the order 0 ... 7 |
183 | 0 | const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd); |
184 | 0 | const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd); |
185 | |
|
186 | 0 | const __m128i res_lo_round = _mm_srai_epi32( |
187 | 0 | _mm_add_epi32(res_lo, round_const), conv_params->round_1); |
188 | 0 | const __m128i res_hi_round = _mm_srai_epi32( |
189 | 0 | _mm_add_epi32(res_hi, round_const), conv_params->round_1); |
190 | |
|
191 | 0 | const __m128i res_16bit = _mm_packs_epi32(res_lo_round, res_hi_round); |
192 | 0 | __m128i res_8bit = _mm_packus_epi16(res_16bit, res_16bit); |
193 | |
|
194 | 0 | __m128i *const p = (__m128i *)&dst[i * dst_stride + j]; |
195 | 0 | _mm_storel_epi64(p, res_8bit); |
196 | 0 | } |
197 | 0 | } |
198 | 0 | } |
199 | 0 | } |