1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* Copyright (c) 2019, Alliance for Open Media. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <arm_neon.h>
#include "config/aom_dsp_rtcd.h"
#include "aom/aom_integer.h"
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/arm/sum_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
#include "aom_ports/mem.h"
#if !defined(__aarch64__)
static INLINE uint32x2_t horizontal_add_u16x8_v(const uint16x8_t a) {
const uint32x4_t b = vpaddlq_u16(a);
const uint64x2_t c = vpaddlq_u32(b);
return vadd_u32(vreinterpret_u32_u64(vget_low_u64(c)),
vreinterpret_u32_u64(vget_high_u64(c)));
}
#endif
unsigned int aom_avg_4x4_neon(const uint8_t *a, int a_stride) {
const uint8x16_t b = load_unaligned_u8q(a, a_stride);
const uint16x8_t c = vaddl_u8(vget_low_u8(b), vget_high_u8(b));
#if defined(__aarch64__)
const uint32_t d = vaddlvq_u16(c);
return (d + 8) >> 4;
#else
const uint32x2_t d = horizontal_add_u16x8_v(c);
return vget_lane_u32(vrshr_n_u32(d, 4), 0);
#endif
}
unsigned int aom_avg_8x8_neon(const uint8_t *a, int a_stride) {
uint16x8_t sum;
uint8x8_t b = vld1_u8(a);
a += a_stride;
uint8x8_t c = vld1_u8(a);
a += a_stride;
sum = vaddl_u8(b, c);
for (int i = 0; i < 6; ++i) {
const uint8x8_t e = vld1_u8(a);
a += a_stride;
sum = vaddw_u8(sum, e);
}
#if defined(__aarch64__)
const uint32_t d = vaddlvq_u16(sum);
return (d + 32) >> 6;
#else
const uint32x2_t d = horizontal_add_u16x8_v(sum);
return vget_lane_u32(vrshr_n_u32(d, 6), 0);
#endif
}
void aom_avg_8x8_quad_neon(const uint8_t *s, int p, int x16_idx, int y16_idx,
int *avg) {
for (int k = 0; k < 4; k++) {
const int x8_idx = x16_idx + ((k & 1) << 3);
const int y8_idx = y16_idx + ((k >> 1) << 3);
const uint8_t *s_tmp = s + y8_idx * p + x8_idx;
avg[k] = aom_avg_8x8_neon(s_tmp, p);
}
}
int aom_satd_lp_neon(const int16_t *coeff, int length) {
const int16x4_t zero = vdup_n_s16(0);
int32x4_t accum = vdupq_n_s32(0);
do {
const int16x8_t src0 = vld1q_s16(coeff);
const int16x8_t src8 = vld1q_s16(coeff + 8);
accum = vabal_s16(accum, vget_low_s16(src0), zero);
accum = vabal_s16(accum, vget_high_s16(src0), zero);
accum = vabal_s16(accum, vget_low_s16(src8), zero);
accum = vabal_s16(accum, vget_high_s16(src8), zero);
length -= 16;
coeff += 16;
} while (length != 0);
return horizontal_add_s32x4(accum);
}
void aom_int_pro_row_neon(int16_t *hbuf, const uint8_t *ref,
const int ref_stride, const int width,
const int height, int norm_factor) {
const uint8_t *idx = ref;
const uint16x8_t zero = vdupq_n_u16(0);
const int16x8_t neg_norm_factor = vdupq_n_s16(-norm_factor);
for (int wd = 0; wd < width; wd += 16) {
uint16x8_t vec0 = zero;
uint16x8_t vec1 = zero;
idx = ref + wd;
for (int ht = 0; ht < height; ++ht) {
const uint8x16_t tmp = vld1q_u8(idx);
idx += ref_stride;
vec0 = vaddw_u8(vec0, vget_low_u8(tmp));
vec1 = vaddw_u8(vec1, vget_high_u8(tmp));
}
const int16x8_t result0 =
vshlq_s16(vreinterpretq_s16_u16(vec0), neg_norm_factor);
const int16x8_t result1 =
vshlq_s16(vreinterpretq_s16_u16(vec1), neg_norm_factor);
vst1q_s16(hbuf + wd, result0);
vst1q_s16(hbuf + wd + 8, result1);
}
}
void aom_int_pro_col_neon(int16_t *vbuf, const uint8_t *ref,
const int ref_stride, const int width,
const int height, int norm_factor) {
for (int ht = 0; ht < height; ++ht) {
uint16x8_t sum = vdupq_n_u16(0);
for (int wd = 0; wd < width; wd += 16) {
const uint8x16_t vec = vld1q_u8(ref + wd);
sum = vaddq_u16(sum, vpaddlq_u8(vec));
}
#if defined(__aarch64__)
vbuf[ht] = ((int16_t)vaddvq_u16(sum)) >> norm_factor;
#else
const uint32x4_t a = vpaddlq_u16(sum);
const uint64x2_t b = vpaddlq_u32(a);
const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
vreinterpret_u32_u64(vget_high_u64(b)));
vbuf[ht] = ((int16_t)vget_lane_u32(c, 0)) >> norm_factor;
#endif
ref += ref_stride;
}
}
// coeff: 16 bits, dynamic range [-32640, 32640].
// length: value range {16, 64, 256, 1024}.
int aom_satd_neon(const tran_low_t *coeff, int length) {
const int32x4_t zero = vdupq_n_s32(0);
int32x4_t accum = zero;
do {
const int32x4_t src0 = vld1q_s32(&coeff[0]);
const int32x4_t src8 = vld1q_s32(&coeff[4]);
const int32x4_t src16 = vld1q_s32(&coeff[8]);
const int32x4_t src24 = vld1q_s32(&coeff[12]);
accum = vabaq_s32(accum, src0, zero);
accum = vabaq_s32(accum, src8, zero);
accum = vabaq_s32(accum, src16, zero);
accum = vabaq_s32(accum, src24, zero);
length -= 16;
coeff += 16;
} while (length != 0);
// satd: 26 bits, dynamic range [-32640 * 1024, 32640 * 1024]
return horizontal_add_s32x4(accum);
}
int aom_vector_var_neon(const int16_t *ref, const int16_t *src, int bwl) {
int32x4_t v_mean = vdupq_n_s32(0);
int32x4_t v_sse = v_mean;
int16x8_t v_ref, v_src;
int16x4_t v_low;
int i, width = 4 << bwl;
for (i = 0; i < width; i += 8) {
v_ref = vld1q_s16(&ref[i]);
v_src = vld1q_s16(&src[i]);
const int16x8_t diff = vsubq_s16(v_ref, v_src);
// diff: dynamic range [-510, 510], 10 bits.
v_mean = vpadalq_s16(v_mean, diff);
v_low = vget_low_s16(diff);
v_sse = vmlal_s16(v_sse, v_low, v_low);
#if defined(__aarch64__)
v_sse = vmlal_high_s16(v_sse, diff, diff);
#else
const int16x4_t v_high = vget_high_s16(diff);
v_sse = vmlal_s16(v_sse, v_high, v_high);
#endif
}
const int mean = horizontal_add_s32x4(v_mean);
const int sse = horizontal_add_s32x4(v_sse);
const unsigned int mean_abs = mean >= 0 ? mean : -mean;
// (mean * mean): dynamic range 31 bits.
const int var = sse - ((mean_abs * mean_abs) >> (bwl + 2));
return var;
}
#if CONFIG_AV1_HIGHBITDEPTH
unsigned int aom_highbd_avg_4x4_neon(const uint8_t *s, int p) {
const uint16_t *src = CONVERT_TO_SHORTPTR(s);
const uint16x4_t r0 = vld1_u16(src);
src += p;
uint16x4_t r1, r2, r3;
r1 = vld1_u16(src);
src += p;
r2 = vld1_u16(src);
src += p;
r3 = vld1_u16(src);
const uint16x4_t s1 = vadd_u16(r0, r1);
const uint16x4_t s2 = vadd_u16(r2, r3);
const uint16x4_t s3 = vadd_u16(s1, s2);
#if defined(__aarch64__)
return (vaddv_u16(s3) + 8) >> 4;
#else
const uint16x4_t h1 = vpadd_u16(s3, s3);
const uint16x4_t h2 = vpadd_u16(h1, h1);
const uint16x4_t res = vrshr_n_u16(h2, 4);
return vget_lane_u16(res, 0);
#endif
}
#endif // CONFIG_AV1_HIGHBITDEPTH
|
