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
|
/*
* Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
* Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/aarch64/asm.S"
function ff_decode_hf_neon, export=1
add x2, x2, x3
add x0, x0, x5, lsl #5
add x1, x1, x5, lsl #2
add x4, x4, x5, lsl #3
sub x6, x6, x5
ldr w7, [x1], #4
add x7, x2, x7, lsl #5
subs x6, x6, #1
b.eq 1f
b.gt 2f
ret
2:
ldr w8, [x1], #4
subs x6, x6, #2
add x8, x2, x8, lsl #5
ld1 {v2.4s}, [x4], #16
ld1 {v0.8b}, [x7]
ld1 {v4.8b}, [x8]
sxtl v3.8h, v0.8b
sxtl v7.8h, v4.8b
scvtf v2.4s, v2.4s, #4
sxtl v0.4s, v3.4h
sxtl2 v1.4s, v3.8h
sxtl v4.4s, v7.4h
sxtl2 v5.4s, v7.8h
scvtf v0.4s, v0.4s
scvtf v1.4s, v1.4s
scvtf v4.4s, v4.4s
scvtf v5.4s, v5.4s
fmul v0.4s, v0.4s, v2.s[0]
fmul v1.4s, v1.4s, v2.s[0]
fmul v4.4s, v4.4s, v2.s[2]
fmul v5.4s, v5.4s, v2.s[2]
b.lt 10f
ldr w7, [x1], #4
add x7, x2, x7, lsl #5
st1 {v0.4s,v1.4s}, [x0], #32
st1 {v4.4s,v5.4s}, [x0], #32
b.gt 2b
1:
ldr w9, [x4]
ld1 {v0.8b}, [x7]
scvtf s2, w9, #4
sxtl v3.8h, v0.8b
sxtl v0.4s, v3.4h
sxtl2 v1.4s, v3.8h
scvtf v0.4s, v0.4s
scvtf v1.4s, v1.4s
fmul v0.4s, v0.4s, v2.s[0]
fmul v1.4s, v1.4s, v2.s[0]
st1 {v0.4s,v1.4s}, [x0]
ret
10:
st1 {v0.4s,v1.4s}, [x0], #32
st1 {v4.4s,v5.4s}, [x0]
ret
endfunc
function ff_dca_lfe_fir0_neon, export=1
mov x3, #32 // decifactor
sub x1, x1, #7*4
add x4, x0, #2*32*4 - 16 // out2
mov x7, #-16
ld1 {v0.4s,v1.4s}, [x1]
// reverse [-num_coeffs + 1, 0]
ext v3.16b, v0.16b, v0.16b, #8
ext v2.16b, v1.16b, v1.16b, #8
rev64 v3.4s, v3.4s
rev64 v2.4s, v2.4s
1:
ld1 {v4.4s,v5.4s}, [x2], #32
ld1 {v6.4s,v7.4s}, [x2], #32
subs x3, x3, #4
fmul v16.4s, v2.4s, v4.4s
fmul v23.4s, v0.4s, v4.4s
fmul v17.4s, v2.4s, v6.4s
fmul v22.4s, v0.4s, v6.4s
fmla v16.4s, v3.4s, v5.4s
fmla v23.4s, v1.4s, v5.4s
ld1 {v4.4s,v5.4s}, [x2], #32
fmla v17.4s, v3.4s, v7.4s
fmla v22.4s, v1.4s, v7.4s
ld1 {v6.4s,v7.4s}, [x2], #32
fmul v18.4s, v2.4s, v4.4s
fmul v21.4s, v0.4s, v4.4s
fmul v19.4s, v2.4s, v6.4s
fmul v20.4s, v0.4s, v6.4s
fmla v18.4s, v3.4s, v5.4s
fmla v21.4s, v1.4s, v5.4s
fmla v19.4s, v3.4s, v7.4s
fmla v20.4s, v1.4s, v7.4s
faddp v16.4s, v16.4s, v17.4s
faddp v18.4s, v18.4s, v19.4s
faddp v20.4s, v20.4s, v21.4s
faddp v22.4s, v22.4s, v23.4s
faddp v16.4s, v16.4s, v18.4s
faddp v20.4s, v20.4s, v22.4s
st1 {v16.4s}, [x0], #16
st1 {v20.4s}, [x4], x7
b.gt 1b
ret
endfunc
function ff_dca_lfe_fir1_neon, export=1
mov x3, #64 // decifactor
sub x1, x1, #3*4
add x4, x0, #2*64*4 - 16 // out2
mov x7, #-16
ld1 {v0.4s}, [x1]
// reverse [-num_coeffs + 1, 0]
ext v1.16b, v0.16b, v0.16b, #8
rev64 v1.4s, v1.4s
1:
ld1 {v4.4s,v5.4s}, [x2], #32
ld1 {v6.4s,v7.4s}, [x2], #32
subs x3, x3, #4
fmul v16.4s, v1.4s, v4.4s
fmul v23.4s, v0.4s, v4.4s
fmul v17.4s, v1.4s, v5.4s
fmul v22.4s, v0.4s, v5.4s
fmul v18.4s, v1.4s, v6.4s
fmul v21.4s, v0.4s, v6.4s
fmul v19.4s, v1.4s, v7.4s
fmul v20.4s, v0.4s, v7.4s
faddp v16.4s, v16.4s, v17.4s
faddp v18.4s, v18.4s, v19.4s
faddp v20.4s, v20.4s, v21.4s
faddp v22.4s, v22.4s, v23.4s
faddp v16.4s, v16.4s, v18.4s
faddp v20.4s, v20.4s, v22.4s
st1 {v16.4s}, [x0], #16
st1 {v20.4s}, [x4], x7
b.gt 1b
ret
endfunc
|
