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 <tmmintrin.h>
13 #include <assert.h>
14
15 #include "config/aom_dsp_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
av1_highbd_wiener_convolve_add_src_ssse3(const uint8_t * src8,ptrdiff_t src_stride,uint8_t * dst8,ptrdiff_t dst_stride,const int16_t * filter_x,int x_step_q4,const int16_t * filter_y,int y_step_q4,int w,int h,const ConvolveParams * conv_params,int bd)21 void av1_highbd_wiener_convolve_add_src_ssse3(
22 const uint8_t *src8, ptrdiff_t src_stride, uint8_t *dst8,
23 ptrdiff_t dst_stride, const int16_t *filter_x, int x_step_q4,
24 const int16_t *filter_y, int y_step_q4, int w, int h,
25 const ConvolveParams *conv_params, int bd) {
26 assert(x_step_q4 == 16 && y_step_q4 == 16);
27 assert(!(w & 7));
28 assert(bd + FILTER_BITS - conv_params->round_0 + 2 <= 16);
29 (void)x_step_q4;
30 (void)y_step_q4;
31
32 const uint16_t *const src = CONVERT_TO_SHORTPTR(src8);
33 uint16_t *const dst = CONVERT_TO_SHORTPTR(dst8);
34
35 DECLARE_ALIGNED(16, uint16_t,
36 temp[(MAX_SB_SIZE + SUBPEL_TAPS - 1) * MAX_SB_SIZE]);
37 int intermediate_height = h + SUBPEL_TAPS - 1;
38 int i, j;
39 const int center_tap = ((SUBPEL_TAPS - 1) / 2);
40 const uint16_t *const src_ptr = src - center_tap * src_stride - center_tap;
41
42 const __m128i zero = _mm_setzero_si128();
43 // Add an offset to account for the "add_src" part of the convolve function.
44 const __m128i offset = _mm_insert_epi16(zero, 1 << FILTER_BITS, 3);
45
46 /* Horizontal filter */
47 {
48 const __m128i coeffs_x =
49 _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_x), offset);
50
51 // coeffs 0 1 0 1 2 3 2 3
52 const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_x, coeffs_x);
53 // coeffs 4 5 4 5 6 7 6 7
54 const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_x, coeffs_x);
55
56 // coeffs 0 1 0 1 0 1 0 1
57 const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
58 // coeffs 2 3 2 3 2 3 2 3
59 const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
60 // coeffs 4 5 4 5 4 5 4 5
61 const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
62 // coeffs 6 7 6 7 6 7 6 7
63 const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);
64
65 const __m128i round_const = _mm_set1_epi32(
66 (1 << (conv_params->round_0 - 1)) + (1 << (bd + FILTER_BITS - 1)));
67
68 for (i = 0; i < intermediate_height; ++i) {
69 for (j = 0; j < w; j += 8) {
70 const __m128i data =
71 _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j]);
72 const __m128i data2 =
73 _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j + 8]);
74
75 // Filter even-index pixels
76 const __m128i res_0 = _mm_madd_epi16(data, coeff_01);
77 const __m128i res_2 =
78 _mm_madd_epi16(_mm_alignr_epi8(data2, data, 4), coeff_23);
79 const __m128i res_4 =
80 _mm_madd_epi16(_mm_alignr_epi8(data2, data, 8), coeff_45);
81 const __m128i res_6 =
82 _mm_madd_epi16(_mm_alignr_epi8(data2, data, 12), coeff_67);
83
84 __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_4),
85 _mm_add_epi32(res_2, res_6));
86 res_even = _mm_srai_epi32(_mm_add_epi32(res_even, round_const),
87 conv_params->round_0);
88
89 // Filter odd-index pixels
90 const __m128i res_1 =
91 _mm_madd_epi16(_mm_alignr_epi8(data2, data, 2), coeff_01);
92 const __m128i res_3 =
93 _mm_madd_epi16(_mm_alignr_epi8(data2, data, 6), coeff_23);
94 const __m128i res_5 =
95 _mm_madd_epi16(_mm_alignr_epi8(data2, data, 10), coeff_45);
96 const __m128i res_7 =
97 _mm_madd_epi16(_mm_alignr_epi8(data2, data, 14), coeff_67);
98
99 __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_5),
100 _mm_add_epi32(res_3, res_7));
101 res_odd = _mm_srai_epi32(_mm_add_epi32(res_odd, round_const),
102 conv_params->round_0);
103
104 // Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7
105 const __m128i maxval =
106 _mm_set1_epi16((WIENER_CLAMP_LIMIT(conv_params->round_0, bd)) - 1);
107 __m128i res = _mm_packs_epi32(res_even, res_odd);
108 res = _mm_min_epi16(_mm_max_epi16(res, zero), maxval);
109 _mm_storeu_si128((__m128i *)&temp[i * MAX_SB_SIZE + j], res);
110 }
111 }
112 }
113
114 /* Vertical filter */
115 {
116 const __m128i coeffs_y =
117 _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_y), offset);
118
119 // coeffs 0 1 0 1 2 3 2 3
120 const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_y, coeffs_y);
121 // coeffs 4 5 4 5 6 7 6 7
122 const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_y, coeffs_y);
123
124 // coeffs 0 1 0 1 0 1 0 1
125 const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
126 // coeffs 2 3 2 3 2 3 2 3
127 const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
128 // coeffs 4 5 4 5 4 5 4 5
129 const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
130 // coeffs 6 7 6 7 6 7 6 7
131 const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);
132
133 const __m128i round_const =
134 _mm_set1_epi32((1 << (conv_params->round_1 - 1)) -
135 (1 << (bd + conv_params->round_1 - 1)));
136
137 for (i = 0; i < h; ++i) {
138 for (j = 0; j < w; j += 8) {
139 // Filter even-index pixels
140 const uint16_t *data = &temp[i * MAX_SB_SIZE + j];
141 const __m128i src_0 =
142 _mm_unpacklo_epi16(*(__m128i *)(data + 0 * MAX_SB_SIZE),
143 *(__m128i *)(data + 1 * MAX_SB_SIZE));
144 const __m128i src_2 =
145 _mm_unpacklo_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE),
146 *(__m128i *)(data + 3 * MAX_SB_SIZE));
147 const __m128i src_4 =
148 _mm_unpacklo_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE),
149 *(__m128i *)(data + 5 * MAX_SB_SIZE));
150 const __m128i src_6 =
151 _mm_unpacklo_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE),
152 *(__m128i *)(data + 7 * MAX_SB_SIZE));
153
154 const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01);
155 const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23);
156 const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45);
157 const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67);
158
159 const __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2),
160 _mm_add_epi32(res_4, res_6));
161
162 // Filter odd-index pixels
163 const __m128i src_1 =
164 _mm_unpackhi_epi16(*(__m128i *)(data + 0 * MAX_SB_SIZE),
165 *(__m128i *)(data + 1 * MAX_SB_SIZE));
166 const __m128i src_3 =
167 _mm_unpackhi_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE),
168 *(__m128i *)(data + 3 * MAX_SB_SIZE));
169 const __m128i src_5 =
170 _mm_unpackhi_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE),
171 *(__m128i *)(data + 5 * MAX_SB_SIZE));
172 const __m128i src_7 =
173 _mm_unpackhi_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE),
174 *(__m128i *)(data + 7 * MAX_SB_SIZE));
175
176 const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01);
177 const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23);
178 const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45);
179 const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67);
180
181 const __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3),
182 _mm_add_epi32(res_5, res_7));
183
184 // Rearrange pixels back into the order 0 ... 7
185 const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd);
186 const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd);
187
188 const __m128i res_lo_round = _mm_srai_epi32(
189 _mm_add_epi32(res_lo, round_const), conv_params->round_1);
190 const __m128i res_hi_round = _mm_srai_epi32(
191 _mm_add_epi32(res_hi, round_const), conv_params->round_1);
192
193 const __m128i maxval = _mm_set1_epi16((1 << bd) - 1);
194 __m128i res_16bit = _mm_packs_epi32(res_lo_round, res_hi_round);
195 res_16bit = _mm_min_epi16(_mm_max_epi16(res_16bit, zero), maxval);
196
197 __m128i *const p = (__m128i *)&dst[i * dst_stride + j];
198 _mm_storeu_si128(p, res_16bit);
199 }
200 }
201 }
202 }
203