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) 2011 Mans Rullgard <mans@mansr.com>
*
* 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/arm/asm.S"
.macro skip args:vararg
.endm
.macro sum8 lo, hi, w, p, t1, t2, t3, t4, rsb=skip, offs=0
ldr \t1, [\w, #4*\offs]
ldr \t2, [\p, #4]!
\rsb \t1, \t1, #0
.irpc i, 135
ldr \t3, [\w, #4*64*\i+4*\offs]
ldr \t4, [\p, #4*64*\i]
smlal \lo, \hi, \t1, \t2
\rsb \t3, \t3, #0
ldr \t1, [\w, #4*64*(\i+1)+4*\offs]
ldr \t2, [\p, #4*64*(\i+1)]
smlal \lo, \hi, \t3, \t4
\rsb \t1, \t1, #0
.endr
ldr \t3, [\w, #4*64*7+4*\offs]
ldr \t4, [\p, #4*64*7]
smlal \lo, \hi, \t1, \t2
\rsb \t3, \t3, #0
smlal \lo, \hi, \t3, \t4
.endm
.macro round rd, lo, hi
lsr \rd, \lo, #24
bic \lo, \lo, #0xff000000
orr \rd, \rd, \hi, lsl #8
mov \hi, #0
ssat \rd, #16, \rd
.endm
function ff_mpadsp_apply_window_fixed_armv6, export=1
push {r2,r4-r11,lr}
add r4, r0, #4*512 @ synth_buf + 512
.rept 4
ldm r0!, {r5-r12}
stm r4!, {r5-r12}
.endr
ldr r4, [sp, #40] @ incr
sub r0, r0, #4*17 @ synth_buf + 16
ldr r8, [r2] @ sum:low
add r2, r0, #4*32 @ synth_buf + 48
rsb r5, r4, r4, lsl #5 @ 31 * incr
lsl r4, r4, #1
asr r9, r8, #31 @ sum:high
add r5, r3, r5, lsl #1 @ samples2
add r6, r1, #4*32 @ w2
str r4, [sp, #40]
sum8 r8, r9, r1, r0, r10, r11, r12, lr
sum8 r8, r9, r1, r2, r10, r11, r12, lr, rsb, 32
round r10, r8, r9
strh_post r10, r3, r4
mov lr, #15
1:
ldr r12, [r0, #4]!
ldr r11, [r6, #-4]!
ldr r10, [r1, #4]!
.irpc i, 0246
.if \i
ldr r11, [r6, #4*64*\i]
ldr r10, [r1, #4*64*\i]
.endif
rsb r11, r11, #0
smlal r8, r9, r10, r12
ldr r10, [r0, #4*64*(\i+1)]
.ifeq \i
smull r4, r7, r11, r12
.else
smlal r4, r7, r11, r12
.endif
ldr r11, [r6, #4*64*(\i+1)]
ldr r12, [r1, #4*64*(\i+1)]
rsb r11, r11, #0
smlal r8, r9, r12, r10
.iflt \i-6
ldr r12, [r0, #4*64*(\i+2)]
.else
ldr r12, [r2, #-4]!
.endif
smlal r4, r7, r11, r10
.endr
.irpc i, 0246
ldr r10, [r1, #4*64*\i+4*32]
rsb r12, r12, #0
ldr r11, [r6, #4*64*\i+4*32]
smlal r8, r9, r10, r12
ldr r10, [r2, #4*64*(\i+1)]
smlal r4, r7, r11, r12
ldr r12, [r1, #4*64*(\i+1)+4*32]
rsb r10, r10, #0
ldr r11, [r6, #4*64*(\i+1)+4*32]
smlal r8, r9, r12, r10
.iflt \i-6
ldr r12, [r2, #4*64*(\i+2)]
.else
ldr r12, [sp, #40]
.endif
smlal r4, r7, r11, r10
.endr
round r10, r8, r9
adds r8, r8, r4
adc r9, r9, r7
strh_post r10, r3, r12
round r11, r8, r9
subs lr, lr, #1
strh_dpost r11, r5, r12
bgt 1b
sum8 r8, r9, r1, r0, r10, r11, r12, lr, rsb, 33
pop {r4}
round r10, r8, r9
str r8, [r4]
strh r10, [r3]
pop {r4-r11,pc}
endfunc
|
