Line data Source code
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 0 : void vpx_sad32x32x4d_avx2(const uint8_t *src, int src_stride,
15 : const uint8_t *const ref[4], int ref_stride,
16 : uint32_t res[4]) {
17 : __m256i src_reg, ref0_reg, ref1_reg, ref2_reg, ref3_reg;
18 : __m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3;
19 : __m256i sum_mlow, sum_mhigh;
20 : int i;
21 : const uint8_t *ref0, *ref1, *ref2, *ref3;
22 :
23 0 : ref0 = ref[0];
24 0 : ref1 = ref[1];
25 0 : ref2 = ref[2];
26 0 : ref3 = ref[3];
27 0 : sum_ref0 = _mm256_set1_epi16(0);
28 0 : sum_ref1 = _mm256_set1_epi16(0);
29 0 : sum_ref2 = _mm256_set1_epi16(0);
30 0 : sum_ref3 = _mm256_set1_epi16(0);
31 0 : for (i = 0; i < 32; i++) {
32 : // load src and all refs
33 0 : src_reg = _mm256_loadu_si256((const __m256i *)src);
34 0 : ref0_reg = _mm256_loadu_si256((const __m256i *)ref0);
35 0 : ref1_reg = _mm256_loadu_si256((const __m256i *)ref1);
36 0 : ref2_reg = _mm256_loadu_si256((const __m256i *)ref2);
37 0 : ref3_reg = _mm256_loadu_si256((const __m256i *)ref3);
38 : // sum of the absolute differences between every ref-i to src
39 0 : ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg);
40 0 : ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg);
41 0 : ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg);
42 0 : ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg);
43 : // sum every ref-i
44 0 : sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg);
45 0 : sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg);
46 0 : sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg);
47 0 : sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg);
48 :
49 0 : src += src_stride;
50 0 : ref0 += ref_stride;
51 0 : ref1 += ref_stride;
52 0 : ref2 += ref_stride;
53 0 : ref3 += ref_stride;
54 : }
55 : {
56 : __m128i sum;
57 : // in sum_ref-i the result is saved in the first 4 bytes
58 : // the other 4 bytes are zeroed.
59 : // sum_ref1 and sum_ref3 are shifted left by 4 bytes
60 0 : sum_ref1 = _mm256_slli_si256(sum_ref1, 4);
61 0 : sum_ref3 = _mm256_slli_si256(sum_ref3, 4);
62 :
63 : // merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3
64 0 : sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1);
65 0 : sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3);
66 :
67 : // merge every 64 bit from each sum_ref-i
68 0 : sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2);
69 0 : sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2);
70 :
71 : // add the low 64 bit to the high 64 bit
72 0 : sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh);
73 :
74 : // add the low 128 bit to the high 128 bit
75 0 : sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow),
76 0 : _mm256_extractf128_si256(sum_mlow, 1));
77 :
78 : _mm_storeu_si128((__m128i *)(res), sum);
79 : }
80 0 : }
81 :
82 0 : void vpx_sad64x64x4d_avx2(const uint8_t *src, int src_stride,
83 : const uint8_t *const ref[4], int ref_stride,
84 : uint32_t res[4]) {
85 : __m256i src_reg, srcnext_reg, ref0_reg, ref0next_reg;
86 : __m256i ref1_reg, ref1next_reg, ref2_reg, ref2next_reg;
87 : __m256i ref3_reg, ref3next_reg;
88 : __m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3;
89 : __m256i sum_mlow, sum_mhigh;
90 : int i;
91 : const uint8_t *ref0, *ref1, *ref2, *ref3;
92 :
93 0 : ref0 = ref[0];
94 0 : ref1 = ref[1];
95 0 : ref2 = ref[2];
96 0 : ref3 = ref[3];
97 0 : sum_ref0 = _mm256_set1_epi16(0);
98 0 : sum_ref1 = _mm256_set1_epi16(0);
99 0 : sum_ref2 = _mm256_set1_epi16(0);
100 0 : sum_ref3 = _mm256_set1_epi16(0);
101 0 : for (i = 0; i < 64; i++) {
102 : // load 64 bytes from src and all refs
103 0 : src_reg = _mm256_loadu_si256((const __m256i *)src);
104 0 : srcnext_reg = _mm256_loadu_si256((const __m256i *)(src + 32));
105 0 : ref0_reg = _mm256_loadu_si256((const __m256i *)ref0);
106 0 : ref0next_reg = _mm256_loadu_si256((const __m256i *)(ref0 + 32));
107 0 : ref1_reg = _mm256_loadu_si256((const __m256i *)ref1);
108 0 : ref1next_reg = _mm256_loadu_si256((const __m256i *)(ref1 + 32));
109 0 : ref2_reg = _mm256_loadu_si256((const __m256i *)ref2);
110 0 : ref2next_reg = _mm256_loadu_si256((const __m256i *)(ref2 + 32));
111 0 : ref3_reg = _mm256_loadu_si256((const __m256i *)ref3);
112 0 : ref3next_reg = _mm256_loadu_si256((const __m256i *)(ref3 + 32));
113 : // sum of the absolute differences between every ref-i to src
114 0 : ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg);
115 0 : ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg);
116 0 : ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg);
117 0 : ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg);
118 0 : ref0next_reg = _mm256_sad_epu8(ref0next_reg, srcnext_reg);
119 0 : ref1next_reg = _mm256_sad_epu8(ref1next_reg, srcnext_reg);
120 0 : ref2next_reg = _mm256_sad_epu8(ref2next_reg, srcnext_reg);
121 0 : ref3next_reg = _mm256_sad_epu8(ref3next_reg, srcnext_reg);
122 :
123 : // sum every ref-i
124 0 : sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg);
125 0 : sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg);
126 0 : sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg);
127 0 : sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg);
128 0 : sum_ref0 = _mm256_add_epi32(sum_ref0, ref0next_reg);
129 0 : sum_ref1 = _mm256_add_epi32(sum_ref1, ref1next_reg);
130 0 : sum_ref2 = _mm256_add_epi32(sum_ref2, ref2next_reg);
131 0 : sum_ref3 = _mm256_add_epi32(sum_ref3, ref3next_reg);
132 0 : src += src_stride;
133 0 : ref0 += ref_stride;
134 0 : ref1 += ref_stride;
135 0 : ref2 += ref_stride;
136 0 : ref3 += ref_stride;
137 : }
138 : {
139 : __m128i sum;
140 :
141 : // in sum_ref-i the result is saved in the first 4 bytes
142 : // the other 4 bytes are zeroed.
143 : // sum_ref1 and sum_ref3 are shifted left by 4 bytes
144 0 : sum_ref1 = _mm256_slli_si256(sum_ref1, 4);
145 0 : sum_ref3 = _mm256_slli_si256(sum_ref3, 4);
146 :
147 : // merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3
148 0 : sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1);
149 0 : sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3);
150 :
151 : // merge every 64 bit from each sum_ref-i
152 0 : sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2);
153 0 : sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2);
154 :
155 : // add the low 64 bit to the high 64 bit
156 0 : sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh);
157 :
158 : // add the low 128 bit to the high 128 bit
159 0 : sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow),
160 0 : _mm256_extractf128_si256(sum_mlow, 1));
161 :
162 : _mm_storeu_si128((__m128i *)(res), sum);
163 : }
164 0 : }
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