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
|
/*
* Copyright (c) 2017 The WebM project authors. 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.
*/
#ifndef VPX_DSP_ARM_MEM_NEON_H_
#define VPX_DSP_ARM_MEM_NEON_H_
#include <arm_neon.h>
#include <assert.h>
#include <string.h>
#include "./vpx_config.h"
#include "vpx/vpx_integer.h"
#include "vpx_dsp/vpx_dsp_common.h"
// Helper functions used to load tran_low_t into int16, narrowing if necessary.
static INLINE int16x8x2_t load_tran_low_to_s16x2q(const tran_low_t *buf) {
#if CONFIG_VP9_HIGHBITDEPTH
const int32x4x2_t v0 = vld2q_s32(buf);
const int32x4x2_t v1 = vld2q_s32(buf + 8);
const int16x4_t s0 = vmovn_s32(v0.val[0]);
const int16x4_t s1 = vmovn_s32(v0.val[1]);
const int16x4_t s2 = vmovn_s32(v1.val[0]);
const int16x4_t s3 = vmovn_s32(v1.val[1]);
int16x8x2_t res;
res.val[0] = vcombine_s16(s0, s2);
res.val[1] = vcombine_s16(s1, s3);
return res;
#else
return vld2q_s16(buf);
#endif
}
static INLINE int16x8_t load_tran_low_to_s16q(const tran_low_t *buf) {
#if CONFIG_VP9_HIGHBITDEPTH
const int32x4_t v0 = vld1q_s32(buf);
const int32x4_t v1 = vld1q_s32(buf + 4);
const int16x4_t s0 = vmovn_s32(v0);
const int16x4_t s1 = vmovn_s32(v1);
return vcombine_s16(s0, s1);
#else
return vld1q_s16(buf);
#endif
}
static INLINE int16x4_t load_tran_low_to_s16d(const tran_low_t *buf) {
#if CONFIG_VP9_HIGHBITDEPTH
const int32x4_t v0 = vld1q_s32(buf);
return vmovn_s32(v0);
#else
return vld1_s16(buf);
#endif
}
static INLINE void store_s16q_to_tran_low(tran_low_t *buf, const int16x8_t a) {
#if CONFIG_VP9_HIGHBITDEPTH
const int32x4_t v0 = vmovl_s16(vget_low_s16(a));
const int32x4_t v1 = vmovl_s16(vget_high_s16(a));
vst1q_s32(buf, v0);
vst1q_s32(buf + 4, v1);
#else
vst1q_s16(buf, a);
#endif
}
// Propagate type information to the compiler. Without this the compiler may
// assume the required alignment of uint32_t (4 bytes) and add alignment hints
// to the memory access.
//
// This is used for functions operating on uint8_t which wish to load or store 4
// values at a time but which may not be on 4 byte boundaries.
static INLINE void uint32_to_mem(uint8_t *buf, uint32_t a) {
memcpy(buf, &a, 4);
}
// Load 4 sets of 4 bytes when alignment is not guaranteed.
static INLINE uint8x16_t load_unaligned_u8q(const uint8_t *buf, int stride) {
uint32_t a;
uint32x4_t a_u32 = vdupq_n_u32(0);
if (stride == 4) return vld1q_u8(buf);
memcpy(&a, buf, 4);
buf += stride;
a_u32 = vld1q_lane_u32(&a, a_u32, 0);
memcpy(&a, buf, 4);
buf += stride;
a_u32 = vld1q_lane_u32(&a, a_u32, 1);
memcpy(&a, buf, 4);
buf += stride;
a_u32 = vld1q_lane_u32(&a, a_u32, 2);
memcpy(&a, buf, 4);
buf += stride;
a_u32 = vld1q_lane_u32(&a, a_u32, 3);
return vreinterpretq_u8_u32(a_u32);
}
// Store 4 sets of 4 bytes when alignment is not guaranteed.
static INLINE void store_unaligned_u8q(uint8_t *buf, int stride,
const uint8x16_t a) {
const uint32x4_t a_u32 = vreinterpretq_u32_u8(a);
if (stride == 4) {
vst1q_u8(buf, a);
return;
}
uint32_to_mem(buf, vgetq_lane_u32(a_u32, 0));
buf += stride;
uint32_to_mem(buf, vgetq_lane_u32(a_u32, 1));
buf += stride;
uint32_to_mem(buf, vgetq_lane_u32(a_u32, 2));
buf += stride;
uint32_to_mem(buf, vgetq_lane_u32(a_u32, 3));
}
// Load 2 sets of 4 bytes when alignment is guaranteed.
static INLINE uint8x8_t load_u8(const uint8_t *buf, int stride) {
uint32x2_t a = vdup_n_u32(0);
assert(!((intptr_t)buf % sizeof(uint32_t)));
assert(!(stride % sizeof(uint32_t)));
a = vld1_lane_u32((const uint32_t *)buf, a, 0);
buf += stride;
a = vld1_lane_u32((const uint32_t *)buf, a, 1);
return vreinterpret_u8_u32(a);
}
// Store 2 sets of 4 bytes when alignment is guaranteed.
static INLINE void store_u8(uint8_t *buf, int stride, const uint8x8_t a) {
uint32x2_t a_u32 = vreinterpret_u32_u8(a);
assert(!((intptr_t)buf % sizeof(uint32_t)));
assert(!(stride % sizeof(uint32_t)));
vst1_lane_u32((uint32_t *)buf, a_u32, 0);
buf += stride;
vst1_lane_u32((uint32_t *)buf, a_u32, 1);
}
#endif // VPX_DSP_ARM_MEM_NEON_H_
|
