1 /*
2 * Copyright (c) 2024, 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 <arm_neon.h>
13 #include <assert.h>
14
15 #include "aom_dsp/arm/aom_neon_sve_bridge.h"
16 #include "aom_dsp/arm/sum_neon.h"
17 #include "av1/common/reconinter.h"
18
av1_wedge_sse_from_residuals_sve(const int16_t * r1,const int16_t * d,const uint8_t * m,int N)19 uint64_t av1_wedge_sse_from_residuals_sve(const int16_t *r1, const int16_t *d,
20 const uint8_t *m, int N) {
21 assert(N % 64 == 0);
22
23 // Predicate pattern with first 8 elements true.
24 const svbool_t pattern = svptrue_pat_b16(SV_VL8);
25 int64x2_t sse[2] = { vdupq_n_s64(0), vdupq_n_s64(0) };
26
27 int i = 0;
28 do {
29 int32x4_t sum[4];
30 int16x8_t sum_s16[2];
31
32 const int16x8_t r1_l = vld1q_s16(r1 + i);
33 const int16x8_t r1_h = vld1q_s16(r1 + i + 8);
34 const int16x8_t d_l = vld1q_s16(d + i);
35 const int16x8_t d_h = vld1q_s16(d + i + 8);
36
37 // Use a zero-extending load to widen the vector elements.
38 const int16x8_t m_l = svget_neonq_s16(svld1ub_s16(pattern, m + i));
39 const int16x8_t m_h = svget_neonq_s16(svld1ub_s16(pattern, m + i + 8));
40
41 sum[0] = vshll_n_s16(vget_low_s16(r1_l), WEDGE_WEIGHT_BITS);
42 sum[1] = vshll_n_s16(vget_high_s16(r1_l), WEDGE_WEIGHT_BITS);
43 sum[2] = vshll_n_s16(vget_low_s16(r1_h), WEDGE_WEIGHT_BITS);
44 sum[3] = vshll_n_s16(vget_high_s16(r1_h), WEDGE_WEIGHT_BITS);
45
46 sum[0] = vmlal_s16(sum[0], vget_low_s16(m_l), vget_low_s16(d_l));
47 sum[1] = vmlal_s16(sum[1], vget_high_s16(m_l), vget_high_s16(d_l));
48 sum[2] = vmlal_s16(sum[2], vget_low_s16(m_h), vget_low_s16(d_h));
49 sum[3] = vmlal_s16(sum[3], vget_high_s16(m_h), vget_high_s16(d_h));
50
51 sum_s16[0] = vcombine_s16(vqmovn_s32(sum[0]), vqmovn_s32(sum[1]));
52 sum_s16[1] = vcombine_s16(vqmovn_s32(sum[2]), vqmovn_s32(sum[3]));
53
54 sse[0] = aom_sdotq_s16(sse[0], sum_s16[0], sum_s16[0]);
55 sse[1] = aom_sdotq_s16(sse[1], sum_s16[1], sum_s16[1]);
56
57 i += 16;
58 } while (i < N);
59
60 const uint64_t csse =
61 (uint64_t)horizontal_add_s64x2(vaddq_s64(sse[0], sse[1]));
62 return ROUND_POWER_OF_TWO(csse, 2 * WEDGE_WEIGHT_BITS);
63 }
64
av1_wedge_sign_from_residuals_sve(const int16_t * ds,const uint8_t * m,int N,int64_t limit)65 int8_t av1_wedge_sign_from_residuals_sve(const int16_t *ds, const uint8_t *m,
66 int N, int64_t limit) {
67 assert(N % 16 == 0);
68
69 // Predicate pattern with first 8 elements true.
70 svbool_t pattern = svptrue_pat_b16(SV_VL8);
71 int64x2_t acc_l = vdupq_n_s64(0);
72 int64x2_t acc_h = vdupq_n_s64(0);
73
74 do {
75 const int16x8_t ds_l = vld1q_s16(ds);
76 const int16x8_t ds_h = vld1q_s16(ds + 8);
77
78 // Use a zero-extending load to widen the vector elements.
79 const int16x8_t m_l = svget_neonq_s16(svld1ub_s16(pattern, m));
80 const int16x8_t m_h = svget_neonq_s16(svld1ub_s16(pattern, m + 8));
81
82 acc_l = aom_sdotq_s16(acc_l, ds_l, m_l);
83 acc_h = aom_sdotq_s16(acc_h, ds_h, m_h);
84
85 ds += 16;
86 m += 16;
87 N -= 16;
88 } while (N != 0);
89
90 const int64x2_t sum = vaddq_s64(acc_l, acc_h);
91 return horizontal_add_s64x2(sum) > limit;
92 }
93